1. The utility model provides a beat printer head mechanism, its characterized in that includes the frame and sets up the printhead assembly in the frame, beat printer head assembly including rotate the setting and be in main shaft, radiator unit, thermal print head and the exposure subassembly in the frame, radiator unit with the main shaft is connected, radiator unit with thermal print head can dismantle the connection, and the exposure subassembly that is used for exposing the film sets up in the frame, the working area of thermal print head with the exposure subassembly is relative and leaves the clearance.

2. The print head mechanism according to claim 1, wherein the heat dissipation assembly includes an air duct cover, an air box, and a heat dissipation fan, the air duct cover is connected to the spindle, the air box is disposed on the air duct cover, the heat dissipation fan is disposed in the air duct cover, an air duct opening is formed in a side wall of the air box, and the thermal print head is located at the air duct opening.

3. A printhead structure according to claim 2, wherein a plurality of heat sinks are provided within the bellows.

4. The print head mechanism of claim 1, wherein the exposure assembly comprises an exposure rod rotatably disposed in the frame and a first driving assembly disposed on the frame, the first driving assembly being in driving connection with the exposure rod.

5. A print head mechanism according to claim 2, further comprising an adjustment assembly for adjusting the thermal print head, the adjustment assembly being provided on the bellows.

6. The printhead mechanism according to claim 5, wherein the adjusting assembly includes a cross bar rotatably disposed on the frame, a pressing buffer member and a second driving assembly, the pressing buffer member is connected to the heat sink assembly for fine-tuning the thermal printhead, the pressing buffer member is overlapped with the cross bar, and the second driving assembly is in transmission connection with the cross bar.

7. The printhead mechanism according to claim 6, wherein the pressing buffer member includes a pressing spring, a lower pressing plate, a lower pressing block, and a spring, the lower pressing plate is hinged to the bellows, the lower pressing block is connected to the lower pressing plate, the pressing spring is connected to the lower pressing block via the spring, the lower pressing plate is overlapped with the cross bar, and the pressing spring contacts the thermal printhead.

8. A printhead arrangement according to claim 7, wherein the cross-section of the cross-bar is semi-circular.

9. The printhead mechanism of claim 1, further comprising a damping member, wherein either end of the damping member is connected to an inner wall of the frame, and the other end of the damping member is connected to the spindle.

10. A print head mechanism according to claim 7, wherein the bellows is provided with a temperature sensing module for sensing the temperature of the print head.

11. The printhead mechanism according to claim 10, wherein a main printing control board, a host module, a power supply module, and a sensor are further disposed in the frame, and the host module, the power supply module, the temperature detection module, the second driving assembly, the thermal printhead, and the sensor are all connected to the main printing control board.

12. A printer comprising a printhead arrangement according to any one of claims 1 to 11.

Background

The medical thermal printer is widely applied to hospitals, and brings great convenience for doctor diagnosis, patient image examination information reservation and referral. As medical film imaging concerns the physical health of patients and doctors accurately judge, higher requirements are put forward on imaging quality. The thermal printer mechanism belongs to mechanical and electronic integration, the imaging quality is influenced by various factors, and the key factors are as follows: the quality of the original medical image is controlled by a control circuit and a control software; have a direct or indirect impact on the final film print quality. In particular, certain elements are not directly controlled by the manufacturer of the thermal printer, or are compromised by cost-to-cost constraints, or are difficult to control due to constraints on use or the mechatronics itself. The result is a film image with the following deficiencies: the image is printed unevenly, and local regular bright and dark color blocks or color stripes are presented. Due to the cumulative effect of heating, the film presents a condition that the front part is gray and the back part is dark; gray scale reduction is problematic, should be bright or dark, and contrast distortion

In addition, because different types of examination images and different imaging devices and modes are adopted, when doctors observe focuses, if the focuses are electronic versions, contrast, window width and window position can be adjusted according to needs through image processing software, diagnosis accuracy is improved, but effective means for improving the diagnosis accuracy according to films are difficult to achieve after printing.

Disclosure of Invention

The invention aims to provide a printing head mechanism and a printer, which can improve the printing quality when a printing body prints on a film.

The embodiment of the invention is realized by the following steps:

the embodiment of the application provides a beat printer head mechanism, include the frame and set up the printer head subassembly in the frame, it sets up including rotating to beat printer head subassembly main shaft, radiator unit, thermal print head and the exposure subassembly in the frame, radiator unit with the main shaft is connected, radiator unit with the connection can be dismantled to the thermal print head for the exposure subassembly setting of exposure film is in the frame, the working area of thermal print head with the exposure subassembly is relative and leave the clearance.

In some embodiments of the present invention, the heat dissipation assembly includes an air duct cover, an air box, and a heat dissipation fan, the air duct cover is connected to the spindle, the air box is disposed on the air duct cover, the heat dissipation fan is disposed in the air duct cover, an air duct opening is disposed on a side wall of the air box, and the thermal print head is located at the air duct opening.

In some embodiments of the invention, a plurality of fins are provided within the bellows.

In some embodiments of the present invention, the exposure assembly includes an exposure rod rotatably disposed in the frame, and a first driving assembly disposed on the frame, and the first driving assembly is in transmission connection with the exposure rod.

In some embodiments of the invention, further comprising an adjustment assembly for adjusting the thermal print head, the adjustment assembly being disposed on the bellows.

In some embodiments of the present invention, the adjusting assembly includes a cross bar rotatably disposed on the frame, a pressing buffer member, and a second driving assembly, the pressing buffer member for fine tuning the thermal print head is connected to the heat dissipation assembly, the pressing buffer member is overlapped with the cross bar, and the second driving assembly is in transmission connection with the cross bar.

In some embodiments of the present invention, the compression buffer includes a compression spring, a lower pressing plate, a lower pressing block, and a spring, the lower pressing plate is hinged to the air box, the lower pressing block is connected to the lower pressing plate, the compression spring is connected to the lower pressing block through the spring, the lower pressing plate is overlapped to the cross bar, and the compression spring contacts the thermal print head.

In some embodiments of the invention, the cross-section of the cross-bar is semi-circular.

In some embodiments of the present invention, the spindle further comprises a damping member, wherein any end of the damping member is connected to the inner wall of the frame, and the other end of the damping member is connected to the spindle.

In some embodiments of the invention, a temperature sensing module is provided on the bellows for sensing the temperature of the printhead.

In some embodiments of the present invention, a printing main control board, a host module, a power supply module, and a sensor are further disposed in the frame, and the host module, the power supply module, the temperature detection module, the second driving assembly, the thermal print head, and the sensor are all connected to the printing main control board.

A printer comprising a printhead mechanism as above.

Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:

a printing head mechanism comprises a main shaft, a heat dissipation mechanism, a thermal printing head, an adjusting assembly and an exposure assembly, wherein the main shaft, the heat dissipation mechanism, the thermal printing head, the adjusting assembly and the exposure assembly are rotatably arranged in a rack, the heat dissipation mechanism is connected with the main shaft, the heat dissipation mechanism is connected with the thermal printing head, the exposure assembly used for exposing a film is arranged in the rack, and a gap is reserved between the thermal printing head and the exposure assembly. The main shaft, the heat dissipation mechanism, the thermal printing head, the adjusting component and the exposure component are combined into an organic whole by the printing head mechanism, the printing head mechanism can be detachably arranged in the rack, the printing head mechanism can adapt to different printing by the design, and the parts in the printing head mechanism can be conveniently maintained and detected by the design. The exposure component used in cooperation with the thermal printing head can increase the quality of the film during printing.

A printer comprises a rack, a paper feeding mechanism, a printing head mechanism and a paper feeding mechanism, wherein the printing head mechanism, the paper feeding mechanism and the paper feeding mechanism are sequentially arranged in the rack, the paper feeding mechanism is positioned at the output end of the paper feeding mechanism, and the printing head mechanism is positioned at the output end of the paper feeding mechanism. The technical scheme combines the paper feeding mechanism, the printing head mechanism and the paper feeding mechanism which are positioned in the frame into an organic whole, thereby providing a complete printing process for printing the medical film; and the printing head mechanism arranged in the frame can reduce complicated manual operation, avoid manually setting the thermosensitive printing depth and continuously adjust the printing depth to realize better printing effect. The paper feeding mechanism arranged in the frame can realize the automatic paper feeding function, and the paper feeding mode can prevent an operator from manually passing printing paper through the printing medium channel and placing the printing paper at a printing preparation position; and the printing channel is generally narrower than the printing channel, so that the manual paper placing mode is obviously very inconvenient, more importantly, the requirement on the position precision of paper is higher particularly when a valuable ticket is printed, the position precision is difficult to meet by manually feeding paper, and the first printing effect is often poor. The printing mechanism is characterized in that a paper feeding mechanism is arranged at the output end of the paper feeding mechanism, the paper feeding mechanism can well guide the film transmitted by the paper feeding mechanism to the printing position of the printing head mechanism, and then the film is printed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic perspective view of a printhead assembly;

FIG. 2 is a schematic diagram of a right side view of the printhead mechanism;

FIG. 3 is a schematic view of a combination of a print head mechanism and a paper guide assembly;

FIG. 4 is a bottom view of the structure of FIG. 3;

FIG. 5 is a perspective view of the printer;

FIG. 6 is a left side view of the structure of FIG. 5;

FIG. 7 is a schematic diagram of the right side view of FIG. 5;

FIG. 8 is a perspective view of the internal structure of FIG. 5;

FIG. 9 is a perspective view of the paper feeding mechanism;

FIG. 10 is a schematic diagram of the right side view of the structure of FIG. 9;

FIG. 11 is a schematic view of a second pressed article;

FIG. 12 is a schematic perspective view of the feeding mechanism;

FIG. 13 is a simplified schematic view of a portion of the paper feeding mechanism;

FIG. 14 is a schematic view of a combination structure of a paper feeding mechanism and a paper feeding mechanism;

FIG. 15 is a front view of the paper feeding mechanism;

FIG. 16 is a schematic view of the combination structure of the paper feeding mechanism and the paper feeding mechanism.

Icon: 101-a carrier; 102-a sucker column; 103-an air pump; 104-a rack; 105-a suction cup; 106-a spring; 107-a stop; 108-a bump; 109-a positioning rod; 110-a first connecting frame; 111-a first press wheel; 112-a connecting plate; 113-a first gear; 114-a first baffle; 115-a second gear; 116-a first swing link; 117-first connecting plate; 118-a first pulley; 119-a second pulley; 120-a third gear; 121-a first drive motor; 201-paper feeding roller; 202-a support plate; 203-paper path back plate; 204-a paper feeding wheel; 205-a blocking plate; 206-paper feed cylinder; 207-limiting plate; 208-a second connecting frame; 209-a second press wheel; 210-a buffer spring; 211-a first transmission gear; 212-sixth gear; 213-seventh gear; 214-a sixth pulley; 215-a seventh pulley; 216-eighth gear; 217-second transmission gear; 301-a main shaft; 302-a thermal print head; 303-air duct cover; 304-a windbox; 305-a heat sink; 306-an exposure rod; 307-exposure roller; 308-a third pulley; 309-a fourth pulley; 310-a fifth pulley; 311-a second tensioning wheel; 312 — a second drive motor; 313-a cross bar; 314-fourth gear; 315-fifth gear; 316-a third drive motor; 317-pressure spring plate; 318-lower press plate; 319-briquetting; 320-a down spring; 401-paper guide roller; 402-a take-off roller; 403-a first export channel; 404-a second export channel; 405-a third export channel; 406-a ninth pulley; 407-a tenth pulley; 408-an eleventh pulley; 409-a third tensioning wheel; 501-carton.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

Referring to fig. 1-16, fig. 1 is a schematic perspective view of a printhead mechanism; FIG. 2 is a schematic diagram of a right side view of the printhead mechanism; FIG. 3 is a schematic view of a combination of a print head mechanism and a paper guide assembly; FIG. 4 is a bottom view of the structure of FIG. 3; FIG. 5 is a perspective view of the printer; FIG. 6 is a left side view of the structure of FIG. 5; FIG. 7 is a schematic diagram of the right side view of FIG. 5; FIG. 8 is a perspective view of the internal structure of FIG. 5; FIG. 9 is a perspective view of the paper feeding mechanism; FIG. 10 is a schematic diagram of the right side view of the structure of FIG. 9; FIG. 11 is a schematic view of a second pressed article; FIG. 12 is a schematic perspective view of the feeding mechanism; FIG. 13 is a simplified schematic view of a portion of the paper feeding mechanism; FIG. 14 is a schematic view of a combination structure of a paper feeding mechanism and a paper feeding mechanism; FIG. 15 is a front view of the paper feeding mechanism; FIG. 16 is a schematic view of the combination structure of the paper feeding mechanism and the paper feeding mechanism.

A printing head mechanism comprises a main shaft 301, a heat dissipation mechanism, a thermal printing head 302, an adjusting component and an exposure component, wherein the main shaft 301, the heat dissipation mechanism, the thermal printing head 302, the adjusting component and the exposure component are rotatably arranged in a rack 104, the heat dissipation mechanism is connected with the main shaft 301, the heat dissipation mechanism is connected with the thermal printing head 302, the exposure component used for exposing films is arranged in the rack 104, and a gap is reserved between the thermal printing head 302 and the exposure component. The main shaft 301, the heat dissipation mechanism, the thermal print head 302, the adjusting component and the exposure component are combined into an organic whole by the print head mechanism, so that the main shaft, the heat dissipation mechanism, the thermal print head 302, the adjusting component and the exposure component can be detachably arranged in the frame 104, the design can lead the printing head mechanism to adapt to different printing, and the design can also be convenient for maintaining and detecting the components in the printing head mechanism, the main shaft 301 arranged in the frame 104 is rotated to provide bearing capacity for the whole printing head assembly, and the printing head mechanism can rotate in the frame 104 through the main shaft 301, i.e., in the event of a failure of a component within the frame 104, the printhead mechanism may be removed from the frame 104, the components in the frame 104 are overhauled, and the heat dissipation assembly arranged on the main shaft 301 can control the temperature dissipated by the thermal printing head 302, so that the printing efficiency of the thermal printing head 302 is prevented from being influenced by overhigh temperature of the thermal printing head 302. The exposure assembly used in conjunction with the thermal print head 302 can increase the quality of the film when it is printed.

In some embodiments of the present invention, as shown in fig. 1 to 3, the heat dissipation assembly includes an air duct cover 303, an air box 304, and a heat dissipation fan, the air duct cover 303 is connected to the spindle 301, the air box 304 is disposed on the air duct cover 303, the heat dissipation fan is disposed in the air duct cover 303, an air duct opening is formed in a side wall of the air box 304, and the thermal print head 302 is located at the air duct opening. The heat radiation component who sets up can control the temperature that thermal print head 302 gived off, prevent that the high temperature of thermal print head 302 from influencing thermal print head 302's printing efficiency, with wind channel cover 303 and main shaft 301 fixed connection can increase this device moving stability, wind channel cover 303 and bellows 304 intercommunication, and set up radiator fan in wind channel cover 303, can increase the income amount of wind that gets into in wind channel cover 303, accelerate thermal print head 302's cooling effect, prevent that the high temperature of thermal print head 302 from influencing thermal print head 302's printing efficiency. The exposure assembly used in conjunction with the thermal print head 302 can increase the quality of the film when it is printed.

In some embodiments of the present invention, as shown in FIGS. 1-3, a plurality of fins 305 are provided within the bellows 304. The provision of a plurality of heat sinks 305 within the bellows 304 allows the thermal print head 302 to be rapidly cooled to meet the requirements for printing film at a high efficiency.

In some embodiments of the present invention, as shown in fig. 1-3, the exposure assembly includes an exposure rod 306 rotatably disposed within the frame 104 and a first driving assembly disposed on the frame 104, the first driving assembly being in driving connection with the exposure rod 306. The exposure component and the printing head mechanism are matched to enable the film to be printed in a better state, and the exposure rod 306 and the working area of the printing head clamp the film together to finish the thermal effect. The exposure rod 306 is made of a compliant material having heat resistant properties and a certain softness, preferably rubber.

Further, as shown in fig. 1 to fig. 3, the first driving component is an exposure roller 307 and a third belt pulley 308, the exposure roller 307 and the third belt pulley 308 are connected by a belt, a second driving motor 312 for driving the third belt pulley 308 is disposed on the frame 104, and the exposure rod 306 is connected with the exposure roller 307.

Further, the second driving assembly includes a fourth gear 314 and a fifth gear 315, the fourth gear 314 is connected with an end of the cross bar 313, the fifth gear 315 is rotatably disposed on the frame 104, the fourth gear 314 is engaged with the fifth gear 315, a body of the third driving motor 316 is disposed on the frame 104, and the fifth gear 315 is disposed on an output end of the third driving motor 316.

Furthermore, the second driving motor 312 is a miniature servo motor with a model number of 42M704L530, and has the advantages of low speed, no vibration, high speed, high force, no step loss, no heat generation, small volume and the like.

Further, the transmission ratio of the exposure roller 307 is large, the number of teeth of the exposure roller 307 is large, then the speed of the exposure roller 307 is accurate, the passing speed of the film under the printing head is controlled by the transmission of the exposure roller 307 of the exposure rod 306, and the synchronous line-by-line imaging of the printing head is matched.

In some embodiments of the present invention, as shown in fig. 1-3, an adjustment assembly for adjusting the thermal print head 302 is also included, the adjustment assembly being disposed on the bellows 304. The relative position of the thermal print head 302 and the air box 304 can be adjusted by an adjusting component arranged on the air box 304 and used for adjusting the thermal print head 302, so that a gap is reserved between the thermal print head 302 and the air box 304, and a ventilation opening is formed in the contact part of the air box 304 and the thermal print head 302. And the cooling treatment can be carried out in the frame 104 through the design.

In some embodiments of the present invention, as shown in fig. 1 to 3, the adjusting assembly includes a cross bar 313 rotatably disposed on the frame 104, a pressing buffer member and a second driving assembly, the pressing buffer member for fine tuning the thermal print head 302 is connected to the heat dissipation assembly, the pressing buffer member overlaps the cross bar 313, and the second driving assembly is in driving connection with the cross bar 313. The position relation of the thermal print head 302 and the air box 304 is adjusted by the matching of the cross rod 313, the pressing buffer and the second driving assembly, so that a gap is reserved between the thermal print head 302 and the air box 304, and a ventilation opening is formed in the contact part of the air box 304 and the thermal print head 302. And the cooling treatment can be carried out in the frame 104 through the design.

Further, the second driving assembly includes a fourth gear 314 and a fifth gear 315, the fourth gear 314 is connected with an end of the cross bar 313, the fifth gear 315 is rotatably disposed on the frame 104, the fourth gear 314 is engaged with the fifth gear 315, a body of the third driving motor 316 is disposed on the frame 104, and the fifth gear 315 is disposed on an output end of the third driving motor 316.

Furthermore, the third driving motor 316 is a miniature servo motor with a model number of 42M704L530, and has the advantages of low speed, no vibration, high speed, high force, no step loss, no heat generation, small volume and the like.

In some embodiments of the present invention, the pressing buffer includes a pressing spring piece 317, a lower pressing plate 318, a lower pressing block 319 and a spring 106, the lower pressing plate 318 is hinged to the air duct cover 303, the lower pressing block 319 is connected to the lower pressing plate 318, the pressing spring piece 317 is connected to the lower pressing block 319 through the spring 106, the lower pressing plate 318 is overlapped with the cross bar 313, and the pressing spring piece 317 is in contact with the thermal print head 302. When the arranged compressing buffer is matched with the cross bar 313, the position relation between the thermal print head 302 and the air box 304 can be adjusted, so that a gap is reserved between the thermal print head 302 and the air box 304, cold air generated by the fan enters the rack 104, static electricity or dust generated in the printer is cleaned, and the static electricity or dust is prevented from being adhered on the film to influence the printing effect of the film. And the cooling treatment can be carried out in the frame 104 through the design. The working principle of the pressing buffer is that the second driving motor 312 drives the cross bar 313 to make circular motion on the frame 104; when the cross bar 313 moves by one-half circle, the cross bar 313 does not exert any force limitation on the lower pressing plate 318, and the thermal print head 302 is tightly contacted with the air box 304 without a gap; when the cross bar 313 moves to the next half circle, the cross bar 313 lifts up the lower platen 318, and the thermal print head 302 is separated from the bellows 304 by a gap.

In some embodiments of the present invention, a damping member is further included, and either end of the damping member is connected to the inner wall of the frame 104, and the other end of the damping member is connected to the main shaft 301. Through being equipped with the damping piece on main shaft 301, the damping piece that sets up enables and beats printer head mechanism, resumes primary position in frame 104, makes the input that beats printer head mechanism and paper feeding mechanism's output closely cooperate, prevents that the film from preventing film and part contact scratch film or making the pit print effect that influences the later stage and print on the film at the in-process of transmission.

In some embodiments of the present invention, as shown in fig. 1-3, a temperature detection module for sensing the temperature of the thermal print head 302 is disposed on the bellows 304. The temperature detection module for sensing the temperature of the thermal printing head 302 is arranged on the air box 304, so that the temperature change generated when the thermal printing head 302 works can be sensed and transmitted to the next processing terminal, and a preset temperature value is set in the temperature detection module; when the temperature detection module detects that the temperature of the thermal print head 302 is higher than the preset temperature value, the temperature detection module immediately transmits the detected temperature to the next processing terminal, and then the air intake amount of the air box 304 is changed by controlling the rotating speed of the cooling fan, so that the heat dissipation capacity of the thermal print head 302 is accelerated.

In some embodiments of the present invention, a printing main control board, a host module, a power supply module, and a sensor are further disposed in the frame 104, and the host module, the power supply module, the temperature detection module, the second driving assembly, the thermal print head 302, and the sensor are all connected to the printing main control board. A printing main control board, a host module, a power supply module and a sensor are also arranged in the frame 104; the printing main control board is used for controlling the operation of the whole printer, the host module is used for controlling the printing head or other parts, and the sensor is used for sensing the motion state of the film in real time and transmitting the motion state to the host module to control the printing state of the printer in real time.

In some embodiments of the present invention, a paper guide assembly is provided between the input end of the thermal print head 302 and the output end of the paper feed mechanism to guide the film. Be equipped with between the input that beats printer head mechanism and paper feed mechanism's output and lead the paper subassembly to the film direction and can prevent that the film can not be smooth gets into in the input that beats printer head mechanism to lead to the present film that needs print and part contact, scrape colored film or make out the pit print on the film and influence the effect of later stage printing.

In some embodiments of the present invention, as shown in fig. 3-4, the paper guide assembly includes a first guide roller assembly at an input end of the thermal print head 302, a second guide roller assembly at an output end of the thermal print head 302, and a third drive for driving the first and second guide roller assemblies to move in synchronization. The paper guide assembly comprises a guide roller assembly, a second guide roller assembly and a third driving piece, the film which is transmitted from the paper feeding assembly can be transmitted to the working area of the printing head in a staged mode to be printed by the printing head, the first guide roller assembly and the second guide roller assembly can synchronously move through the third driving piece, the film can be better transmitted to the working area of the printing head to be printed by the printing head, and the phenomenon that the speed of the film in the working area of the printing head is fast and slow due to the fact that the transmission speed of the first guide roller assembly and the transmission speed of the second guide roller assembly to the film are inconsistent is avoided, and the printing effect of the film is poor.

In some embodiments of the present invention, as shown in fig. 3-4, the first guide roller assembly includes two guide rollers 401, and both guide rollers 401 are rotatably disposed in the frame 104 with a gap between the two guide rollers 401. Two lead paper roll 401 and press from both sides tight film jointly and play the transmission effect to the film, make the film transmit the work area who beats printer head, two that set up lead paper roll 401 cooperation and rotate and make the film uniform motion, can be printed out with better state. The paper guide roller 401 is made of a bonding material having heat-resistant property and a certain softness, and preferably rubber.

In some embodiments of the present invention, as shown in fig. 3-4, the second guide roller assembly includes two exit rollers 402, both exit rollers 402 rotatably disposed within the frame 104 with a gap between the two exit rollers 402. The two guide rollers 402 clamp the film together to transmit the film, so that the film is transmitted out of the working area of the printing head, and the two guide rollers 401 are matched to rotate to enable the film to move at a constant speed, so that the film can be printed in a better state. The paper guide roller 401 is made of a bonding material having heat-resistant property and a certain softness, and preferably rubber.

Further, as shown in fig. 3-4, the third driving member includes a ninth pulley 406, a tenth pulley 407, an eleventh pulley 408 and two second tensioning pulleys 311, the ninth pulley 406 is connected to an end of any one of the paper guide rollers 401, the tenth pulley 407 is connected to an end of the exposure bar 306 facing away from the exposure roller 307, the eleventh pulley 408 is connected to any one of the delivery rollers 402, and the ninth pulley 406, the tenth pulley 407 and the eleventh pulley 408 are located on the same side of the frame 104, and the ninth pulley 406, the tenth pulley 407 and the eleventh pulley 408 are all connected by a belt transmission. The synchronous movement of the ninth pulley 406, the tenth pulley 407 and the eleventh pulley 408 is driven by the second driving motor 312.

In some embodiments of the present invention, as shown in FIGS. 3-4, a first guide roller assembly and a first guide out channel 403 are provided at the output end of the paper feeding mechanism. The first export channel 403 can transfer the film delivered from the paper feeding assembly to the working area of the printing head in stages to be printed by the printing head, so as to prevent the existing film to be printed from contacting with parts in the frame 104, scratch the film or make a pit mark on the film to affect the effect of post-printing.

In some embodiments of the present invention, as shown in FIGS. 3-4, a second guide channel 404 is provided between the first guide roller assembly and the exposure bar 306. The second export channel 404 can periodically transmit the film delivered from the paper feeding assembly to the working area of the printing head to be printed and exposed by the printing head, so as to play a certain role in shading, prevent the film from being exposed for too long time to influence the printing effect of the film, prevent the existing film needing to be printed from contacting with parts in the frame 104, scrape the film or make a pit print on the film to influence the effect of the later printing.

In some embodiments of the present invention, as shown in fig. 3-4, a third lead-out channel 405 is provided between the exposure rod 306 and the second guide roller assembly. The third exit channel 405 can deliver the film delivered from the paper feeding assembly out of the print head working area in stages, and can also prevent the printed film from contacting parts inside the frame 104, scratching the film, or making pits in the film, which can affect the post-viewing effect.

In some embodiments of the present invention, the number of the paper feeding mechanisms and the paper feeding mechanisms is two, and two paper feeding mechanisms are disposed in parallel with each other in the frame 104, and one paper feeding mechanism are matched with each other. The number of the paper feeding mechanisms and the number of the paper feeding mechanisms are two, the two paper feeding mechanisms are arranged in the rack 104 in parallel, one paper feeding mechanism is matched with the other paper feeding mechanism, the two paper feeding mechanisms can alternately and continuously provide films for the printing head mechanism, the film printing speed is improved, and frequent paper feeding to the films in the rack 104 is avoided.

In some embodiments of the present invention, cross-section of crossbar 313 is semi-circular. When the second driving motor 312 drives the cross bar 313 to make circular motion on the frame 104; when the cross bar 313 moves by one-half circle, the cross bar 313 does not exert any force limitation on the lower pressing plate 318, and the thermal print head 302 is tightly contacted with the air box 304 without a gap; when the cross bar 313 moves to the next half circle, the cross bar 313 lifts up the lower platen 318, and the thermal print head 302 is separated from the bellows 304 by a gap.

As shown in fig. 1-16, a printer includes a print head mechanism as above, and further includes a frame 104, a paper feeding mechanism and a paper feeding mechanism, the paper feeding mechanism and the paper feeding mechanism are sequentially disposed in the frame 104, and the paper feeding mechanism is located at an output end of the paper feeding mechanism, and the print head mechanism is located at an output end of the paper feeding mechanism. The technical proposal combines the paper feeding mechanism, the printing head mechanism and the paper feeding mechanism which are positioned in the frame 104 into an organic whole, thereby providing a complete printing process for the printing of the medical film; and complicated manual operation can be reduced through the print head mechanism arranged in the frame 104, the situation that the thermal printing depth needs to be set manually is avoided, and the better printing effect can be realized by continuously adjusting the printing depth. A paper feeding mechanism disposed within the frame 104 to enable automatic paper feeding in a manner that prevents an operator from manually feeding printing paper through the print media path and into a print preparation position; and the printing channel is generally narrower than the printing channel, so that the manual paper placing mode is obviously very inconvenient, more importantly, the requirement on the position precision of paper is higher particularly when a valuable ticket is printed, the position precision is difficult to meet by manually feeding paper, and the first printing effect is often poor. The printing mechanism is characterized in that a paper feeding mechanism is arranged at the output end of the paper feeding mechanism, the paper feeding mechanism can well guide the film transmitted by the paper feeding mechanism to the printing position of the printing head mechanism, and then the film is printed.

When the film printing machine is actually used, an operator prepares a film to be printed, then starts the printer and debugs the printer before printing; when the operating personnel adjusts the working state of the printer, the film to be printed is placed at the input end of the paper feeding mechanism; the operator starts the printer again at the moment, the input end of the paper feeding mechanism sucks the film and drives the film to move towards the input end close to the paper feeding mechanism at the moment, and the paper feeding mechanism completes a complete periodic movement after the paper feeding mechanism inputs the film into the paper feeding mechanism; then the film reaches the input end of the printing head mechanism under the conveying of the paper feeding mechanism until the film is printed in the printing head mechanism.

Furthermore, the paper feeding mechanism, the printing head mechanism and the paper feeding mechanism are detachably connected with the frame 104 through bolts or screws, so that the machine is convenient to disassemble the case and the machine body module and the overhauling efficiency is accelerated in the process of maintaining and overhauling the machine.

In some embodiments of the present invention, the feeding mechanism comprises a carrier 101, a driving assembly, a suction member, and a first pressing member, the carrier 101 is in driving connection with the driving assembly, the driving assembly is connected with the frame 104, the suction member for sucking the film is connected with the carrier 101, and the first pressing member for pressing the film is connected with the carrier 101. The paper feeding mechanism is combined into an organic whole through the bearing frame 101, the transmission component, the suction piece and the first pressing piece, and provides an automatic paper feeding function for printing of the medical film, and the paper feeding mode can prevent an operator from manually feeding printing paper through the printing medium channel and placing the printing paper at a printing preparation position; in the process, the printing position of the film can be deviated, and the printing precision of the film is difficult to meet when the film is printed, so that the first printing effect is often poor. The carriage 101 reciprocates within the frame 104 through the drive assembly to provide a stable driving force to the film to be printed, and then sucks the film through the suction member located on the carriage 101 and prevents the film from falling off the suction member. The first pressing piece arranged on the bearing frame 101 enables the film to accurately enter the input end of the paper feeding mechanism under the driving of the bearing column, and the first pressing piece plays a limiting role on the film.

In some embodiments of the present invention, the suction member includes a plurality of suction cup columns 102 and an air pump 103, the suction cup columns 102 are all connected to the carrier frame 101, the suction cups 105 are all disposed on the ends of the suction cup columns 102 close to the film, the air pump 103 is communicated with the suction cups 105, and the air pump 103 is connected to the frame 104. The air suction piece that sets up passes through the sucking disc post 102 and the air pump 103 constitutes, and the air pump 103 can produce the negative pressure for the cavity that forms in sucking disc post 102 to when making sucking disc 105 and film laminating, lie in sucking disc 105 and the inseparable adhesion of film and be in the same place, prevent that the film from droing from sucking disc 105 when doing the motion of going up paper under the effect of last paper mechanism. When a portion of the film enters the sheet feeding mechanism, the air pump 103 stops operating, and the suction cup 105 does not generate a negative pressure with the film, and the film is separated from the suction cup 105.

Furthermore, the air pump 103 is AQB520-A, and the air pump 103 is small in structure, low in cost and high in response speed.

Further, the suction cup column 102 is a tube, one end of the suction cup column 102, which is away from the film, is communicated with the air suction end of the air pump 103, and one end of the suction cup column 102, which is opposite to the film, is communicated with the suction cup 105. The material of the sucker rod 102 is steel.

Further, the preferred two that are of the quantity of sucking disc post 102, can absorb the both ends of film when the quantity of sucking disc post 102 is two, prevent that the middle part of film is crooked, when avoiding the film to get into paper feed mechanism, the film is buckled or is damaged, influences the printing effect of film.

Further, the number of the suction cup posts 102 is preferably one, and when the number of the suction cup posts 102 is one, no matter which part of the film is sucked by the suction cup 105, a certain part of the film is bent, so that the film is prevented from being bent or damaged when entering the paper feeding mechanism, and the printing effect of the film is not affected.

Further, the number of the sucker columns 102 is preferably three, and the effect produced when the number of the sucker columns 102 is three is the same as the technical effect of two.

In some embodiments of the present invention, a plurality of sucker posts 102 are all disposed on the carrier 101, a spring 106 is sleeved on each sucker post 102, and any end of the spring 106 is connected to the side wall of the sucker post 102 and any end thereof is connected to the carrier 101. The sucker column 102 is arranged on the bearing frame 101 in a penetrating mode, so that the sucker column 102 has a certain moving space, the sucker column 102 and a sucker 105 arranged on the sucker column 102 are prevented from being in hard contact with a film, the printing part of the film is scraped, and the printing effect of the film is not influenced. Still overlap on the sucking disc post 102 and be equipped with spring 106, the spring 106 that sets up can slow down the motion of sucking disc post 102, prevents that sucking disc post 102 from directly dropping to the film on bearing frame 101, directly punctures the film or makes the pit print effect that influences the post printing on the film.

In some embodiments of the present invention, the carrier 101 is provided with a plurality of stoppers 107 for limiting the movement of the sucker rod 102. The limiting part 107 arranged on the bearing frame 101 can control the motion of the sucker column 102 in a mechanical mode, and the influence on the paper feeding efficiency of the paper feeding mechanism caused by the connection of the film stations due to the static or light adhesion of the film is reduced.

In some embodiments of the present invention, a protrusion 108 is disposed on a side wall of the limiting member 107 opposite to the sucker column 102, and a positioning rod 109 matching with the protrusion 108 is disposed on the sucker column 102. The film printer uses two sucking disc columns 102 which are vertical to the film and provided with sucking discs 105 to suck the film, and the driving assembly enables the sucking disc columns 102 to suck the film in a pressing state; when the driving assembly drives the connecting frame to reset the film and discharge the film, the sucking disc column 102 moves along the vertical direction, and the generated film is bent and then recovers, so that the possibility of sticking the film is reduced.

The bumped limit stop 107 moves with the carriage driven by the stepper motor and the chuck post 102 undergoes a process of being perpendicular to the film, then tilting, and then perpendicular. When the film is initially sucked, the sucking disc column 102 is vertical to the film; during the backward return of the film, under the action of the return force of the spring 106, the short cross bar 313 of the suction cup column 102 moves along the guide cam-like track, and the two suction cup columns 102 tilt inward, so that the film takes on an inward curve. The film to be printed is kept in a suction state due to the action of the suction disc 105, and the films of other adhesive sheets can be separated from the film to be printed due to certain tension and downward gravity, so that the probability of lamination caused by the adhesive sheets is reduced.

Besides, in the process of resetting after sucking the sheet, the connecting frame can be controlled to generate a plurality of times of rapid vertical reciprocating motions within an extreme stroke by using control software, and the sheet sticking device is similar to the shaking effect and also beneficial to eliminating the sheet sticking caused by static electricity and adhesion.

In some embodiments of the present invention, the first pressing assembly includes a first connecting frame 110 and a first pressing wheel 111, the first pressing frame is connected to the carriage 101, and the first pressing wheel 111 is rotatably disposed on the first connecting frame 110. The first pressing piece arranged on the bearing frame 101 can prevent the film from entering the input end of the paper feeding mechanism accurately under the driving of the bearing column, and the first pressing piece plays a limiting role on the film. And rotate first pressing wheel 111 and set up on first suppression frame, can prevent to scrape colored film or make out the effect that the pit seal influences the post printing on the film when first pressing wheel 111 contacts with the film.

Further, the first pressing wheel 111 is made of a rubber material with a low friction coefficient.

Furthermore, the first pressing frame is detachably connected with the bearing frame 101 through a connecting plate 112, the connecting plate 112 is detachably connected with the bearing frame 101 through bolts or screws, and therefore the paper feeding mechanism installed in the machine frame 104 is conveniently disassembled and the maintenance efficiency is accelerated in the process of maintaining and repairing the machine.

In some embodiments of the invention, the transmission assembly includes two sets of gear sets and a rotating shaft, the two sets of gear sets being drivingly connected by the rotating shaft. The transmission assembly is designed into two gear sets, the two gear sets realize synchronous motion through a rotating shaft, the bearing frame 101 can be supported to run well in the frame 104, the bearing frame 101 is prevented from deviating in the long-term running process, the paper feeding precision of the device is prevented from being influenced, and the use cost of a user when the device is used is increased.

Further, each group of gear sets comprises two first gears 113, a first baffle 114 and a second gear 115, the two first gears 113 and the second gear 115 are rotatably arranged on the first baffle 114, the two first gears 113 and the second gear 115 are meshed, first swing rods 116 are arranged on end faces of the two first gears 113, the first swing rods 116 are detachably connected with the bearing frame 101 through first connecting plates 117112, first belt pulleys 118 are arranged on the second gears 115, third gears 120 are rotatably arranged on the rack 104, the first belt pulleys 118 and the second belt pulleys 119 are connected through belt transmission, second belt pulleys 119 are arranged on the third gears 120, first driving motors 121 for driving the third gears 120 to move are arranged on the rack 104, and driving gears meshed with the third gears 120 are arranged at output ends of the first driving motors 121.

Further, the rotation shaft is connected to the two third gears 120 by welding.

Furthermore, the miniature servo motor with the type of the first driving motor 121 being 42M704L530 has the advantages of low speed, no vibration, high speed, strong force, no step loss, no heat generation, small volume and the like.

Further, a first tension roller for tensioning the belt is rotatably provided on the first flap 114. The belt is prevented from loosening in long-term high-load carrying, and the operation of the paper feeding mechanism is prevented from being influenced.

Further, the first baffle 114 can be detachably connected with the machine frame through bolts or screws, so that the paper feeding mechanism installed in the machine frame 104 can be disassembled and the maintenance efficiency can be accelerated during the maintenance and repair of the machine.

In some embodiments of the present invention, the paper feeding mechanism includes a plurality of paper feeding rollers 201, a supporting plate 202, a first driving assembly, a second pressing member, and a paper feeding passage, wherein the plurality of paper feeding rollers 201 are rotatably disposed in the frame 104, the supporting plate 202 is disposed between any two adjacent paper feeding rollers 201, the paper feeding rollers 201 are in transmission connection with the first driving assembly, the second pressing member for pressing the film is disposed in the frame 104, and the paper feeding passage is located at the output end of the paper feeding mechanism. The paper feeding mechanism who sets up includes a plurality of paper feed roller 201, the film that paper feeding mechanism transported to can be transmitted to printing head mechanism department to paper feed roller 201 that sets up, the first drive assembly who sets up can provide power for a plurality of paper feed roller 201, thereby drive the film and move in paper feeding mechanism, still be equipped with backup pad 202 between arbitrary two adjacent paper feed roller 201, backup pad 202 that sets up can prevent when the film from moving on paper feed roller 201, imbed between arbitrary two adjacent paper feed roller 201, cause this device can not normal operating. The second pressfitting of setting in the frame enables the film accurate motion to the paper feed passageway under the drive of paper feed roller 201 in, prevents that the film card from in frame 104, and first pressfitting plays spacing and guide's effect to the film.

Further, the number of the sheet feeding rollers 201 is preferably two.

Further, the first driving assembly includes a first transmission gear 211, a sixth gear 212, a seventh gear 213, a sixth pulley 214, a seventh pulley 215, an eighth gear 216, and a second transmission gear 217. The sixth gear 212 and the seventh gear 213 are respectively arranged at the same end of the two paper feeding rollers 201, the first transmission gear 211 is rotatably arranged in the frame 104, the sixth gear 212 and the seventh gear 213 are in transmission connection through the first transmission gear 211, a sixth belt pulley 214 is arranged at the other end of any one of the paper feeding rollers 201, the seventh belt pulley 215 is rotatably arranged in the frame 104, the sixth belt pulley 214 and the seventh belt pulley 215 are in transmission connection through a belt, and an eighth gear 216 is arranged on the seventh belt pulley 215. The transmission mechanism further comprises a fourth driving motor used for rotating the eighth gear 216, the body of the fourth driving motor is detachably connected with the rack 104 through a bolt, and a driving gear meshed with the eighth gear 216 is arranged on the output end of the fourth driving motor.

In some embodiments of the present invention, the paper path includes a paper path back plate 203 and a paper path wheel 204, the paper path back plate 203 is detachable from the frame 104, the paper path wheel 204 is rotatably disposed on the paper path back plate 203, a blocking plate 205 matching with the paper path back plate 203 is disposed in the frame 104, and a gap is left between the paper path back plate 203 and the blocking plate 205. Through detachably connecting the paper feeding channel back plate 203 and the frame 104, the disassembly of the case and the machine body module and the acceleration of the maintenance efficiency in the maintenance and overhaul processes of the machine are facilitated. And the paper feeding wheel 204 is rotationally arranged on the paper feeding channel back plate 203, so that the effect of later printing influenced by scratching the film or making craters on the film when the first pressing wheel 111 is in contact with the film can be prevented.

Furthermore, the barrier plate 205 is also rotatably provided with the paper feeding wheel 204, and the paper feeding wheel 204 is rotatably arranged on the barrier plate 205, so that the effects of scratching the film or making pits on the film to influence the later printing when the first pressing wheel 111 is in contact with the film can be prevented.

Further, the paper feeding wheel 204 is made of rubber with a low friction coefficient.

Furthermore, the paper feeding channel back plate 203 and the machine frame 104 are detachably connected through bolts or screws, so that the machine case and the machine body module can be disassembled conveniently and the maintenance efficiency can be accelerated in the maintenance and overhaul processes of the machine.

In some embodiments of the present invention, the paper feeding roller 201 is sleeved with a plurality of paper feeding cylinders 206 along the length direction thereof, and the paper feeding cylinders 206 are connected with the side walls of the paper feeding roller 201. And paper feed roller 201 is equipped with a plurality of paper feed barrel 206 along its length direction cover, can prevent to scrape the colored film or make the pit print influence the effect of printing in the later stage on the film after the too big area of first pressing wheel 111 and film contact.

Further, a rubber material having a low friction coefficient is laid on the paper feeding roller 201, and the paper feeding roller 201 is made of a steel material.

Further, the paper feed cylinder 206 is made of a rubber material with a low friction coefficient.

In some embodiments of the present invention, both ends of the supporting plate 202 are provided with the limiting plates 207. Limiting plates 207 are arranged at two ends of the supporting plate 202, and the arranged limiting plates 207 can prevent the film from deviating when moving on the paper feeding roller 201, so that the film is scratched when being in contact with parts in the rack 104 or craters are formed on the film, and the effect of later printing is influenced.

In some embodiments of the present invention, the second pressing assembly includes a second connecting frame 208 and a second pressing wheel 209, the second connecting frame 208 is connected with the blocking plate 205, and the second pressing wheel 209 is rotatably disposed on the second connecting frame 208. The second pressing member provided on the carriage 101 prevents the film from deviating when moving on the sheet feeding roller 201, and the second pressing member acts as a stopper for the film. And the second pressing wheel 209 is rotatably arranged on the second pressing frame, so that the film can be prevented from being scratched when the second pressing wheel 209 is in contact with the film or the pit print is made on the film to influence the effect of post-printing.

Further, the first pressing wheel 111 is made of a rubber material with a low friction coefficient.

Furthermore, the second pressing frame is detachably connected with the machine frame 104 through bolts or screws, so that the machine is conveniently maintained and overhauled, the paper feeding mechanism installed in the machine frame 104 is disassembled, the overhauling efficiency is accelerated, and the assembly of parts in the machine frame 104 is facilitated.

In some embodiments of the present invention, the second connecting frame 208 is provided with a mounting opening, the rotating shaft of the second pressing wheel 209 is rotatably disposed in the mounting opening, a buffer spring 210 is disposed in the mounting opening, and the buffer spring 210 is connected with the rotating shaft of the second pressing wheel 209. Through the above design, the second pressing wheel 209 can be prevented from directly contacting the film, the quality of the film is influenced, and the printing effect of the later period of the film is influenced. And a buffer spring 210 is arranged in the mounting hole, so that the second pressing wheel 209 can not be separated from the film when being contacted with the film again, and the film is always limited.

Further, the first pressing assembly and the second pressing assembly are identical in structure.

In some embodiments of the present invention, a paper guide assembly is provided between the input end of the thermal print head 302 and the output end of the paper feed mechanism to guide the film. Be equipped with between the input that beats printer head mechanism and paper feed mechanism's output and lead the paper subassembly to the film direction and can prevent that the film can not be smooth gets into in the input that beats printer head mechanism to lead to the present film that needs print and part contact, scrape colored film or make out the pit print on the film and influence the effect of later stage printing.

In some embodiments of the present invention, the paper guide assembly includes a first guide roller assembly at an input end of the thermal print head 302, a second guide roller assembly at an output end of the thermal print head 302, and a third drive for driving the first and second guide roller assemblies to move in synchronization. The paper guide assembly comprises a guide roller assembly, a second guide roller assembly and a third driving piece, the film which is transmitted from the paper feeding assembly can be transmitted to the working area of the printing head in a staged mode to be printed by the printing head, the first guide roller assembly and the second guide roller assembly can synchronously move through the third driving piece, the film can be better transmitted to the working area of the printing head to be printed by the printing head, and the phenomenon that the speed of the film in the working area of the printing head is fast and slow due to the fact that the transmission speed of the first guide roller assembly and the transmission speed of the second guide roller assembly to the film are inconsistent is avoided, and the printing effect of the film is poor.

In some embodiments of the present invention, the first guide roller assembly includes two guide rollers 401, and both guide rollers 401 are rotatably disposed in the frame 104 with a gap left between the two guide rollers 401. Two lead paper roll 401 and press from both sides tight film jointly and play the transmission effect to the film, make the film transmit the work area who beats printer head, two that set up lead paper roll 401 cooperation and rotate and make the film uniform motion, can be printed out with better state. The paper guide roller 401 is made of a bonding material having heat-resistant property and a certain softness, and preferably rubber.

In some embodiments of the present invention, the second guide roller assembly includes two exit rollers 402, both exit rollers 402 rotatably disposed within the frame 104, leaving a gap between the two exit rollers 402. The two guide rollers 402 clamp the film together to transmit the film, so that the film is transmitted out of the working area of the printing head, and the two guide rollers 401 are matched to rotate to enable the film to move at a constant speed, so that the film can be printed in a better state. The paper guide roller 401 is made of a bonding material having heat-resistant property and a certain softness, and preferably rubber.

Further, the third driving member includes a ninth pulley 406, a tenth pulley 407, an eleventh pulley 408 and two second tensioning pulleys 311, the ninth pulley 406 is connected to an end portion of any one of the paper guide rollers 401, the tenth pulley 407 is connected to an end of the exposure bar 306 facing away from the exposure roller 307, the eleventh pulley 408 is connected to any one of the delivery rollers 402, and the ninth pulley 406, the tenth pulley 407 and the eleventh pulley 408 are located on the same side of the frame 104, and the ninth pulley 406, the tenth pulley 407 and the eleventh pulley 408 are all connected by a belt transmission. The synchronous movement of the ninth pulley 406, the tenth pulley 407 and the eleventh pulley 408 is driven by the second driving motor 312.

In some embodiments of the present invention, a first guide roller assembly and the output end of the paper feeding mechanism are provided with a first guide channel 403. The first export channel 403 can transfer the film delivered from the paper feeding assembly to the working area of the printing head in stages to be printed by the printing head, so as to prevent the existing film to be printed from contacting with parts in the frame 104, scratch the film or make a pit mark on the film to affect the effect of post-printing.

In some embodiments of the present invention, a second guide channel 404 is provided between the first guide roller assembly and the exposure bar 306. The second export channel 404 can periodically transmit the film delivered from the paper feeding assembly to the working area of the printing head to be printed and exposed by the printing head, so as to play a certain role in shading, prevent the film from being exposed for too long time to influence the printing effect of the film, prevent the existing film needing to be printed from contacting with parts in the frame 104, scrape the film or make a pit print on the film to influence the effect of the later printing.

In some embodiments of the present invention, a third guide channel 405 is provided between the exposure bar 306 and the second guide roller assembly. The third exit channel 405 can deliver the film delivered from the paper feeding assembly out of the print head working area in stages, and can also prevent the printed film from contacting parts inside the frame 104, scratching the film, or making pits in the film, which can affect the post-viewing effect.

In some embodiments of the present invention, the number of the paper feeding mechanisms and the paper feeding mechanisms is two, and two paper feeding mechanisms are disposed in parallel with each other in the frame 104, and one paper feeding mechanism are matched with each other. The number of the paper feeding mechanisms and the number of the paper feeding mechanisms are two, the two paper feeding mechanisms are arranged in the rack 104 in parallel, one paper feeding mechanism is matched with the other paper feeding mechanism, the two paper feeding mechanisms can alternately and continuously provide films for the printing head mechanism, the film printing speed is improved, and frequent paper feeding to the films in the rack 104 is avoided.

In some embodiments of the present invention, cross-section of crossbar 313 is semi-circular. When the second driving motor 312 drives the cross bar 313 to make circular motion on the frame 104; when the cross bar 313 moves by one-half circle, the cross bar 313 does not exert any force limitation on the lower pressing plate 318, and the thermal print head 302 is tightly contacted with the air box 304 without a gap; when the cross bar 313 moves to the next half circle, the cross bar 313 lifts up the lower platen 318, and the thermal print head 302 is separated from the bellows 304 by a gap.

In some embodiments of the present invention, a plurality of cartons 501 are provided within the housing 104 that mate with the feeding mechanism. The paper box 501 is arranged in the rack 104, and films to be printed can be placed in the paper box 501 through the arranged paper box 501, so that the film is prevented from contacting parts in the rack 104, the films are prevented from being scratched, or pit marks are made on the films, and the later printing effect is prevented from being influenced.

In some embodiments of the invention, a slide assembly is provided within the housing 104 for moving the cartons 501. The slide rail assembly is provided to allow the carton 501 to be easily removed from the frame 104, filled with film, and readily inspected and maintained.

A further slide assembly is a bottom-mounted concealed slide having a model number of AQB 520-A.

In summary, the embodiment of the present invention provides a print head mechanism, which includes a main shaft 301 rotatably disposed in a frame 104, a heat dissipation mechanism, a thermal print head 302, an adjustment assembly, and an exposure assembly, wherein the heat dissipation mechanism is connected to the main shaft 301, the heat dissipation mechanism is connected to the thermal print head 302, the exposure assembly for exposing a film is disposed in the frame 104, and a gap is left between the thermal print head 302 and the exposure assembly. The main shaft 301, the heat dissipation mechanism, the thermal print head 302, the adjusting component and the exposure component are combined into an organic whole by the print head mechanism, so that the main shaft, the heat dissipation mechanism, the thermal print head 302, the adjusting component and the exposure component can be detachably arranged in the frame 104, the design can lead the printing head mechanism to adapt to different printing, and the design can also be convenient for maintaining and detecting the components in the printing head mechanism, the main shaft 301 arranged in the frame 104 is rotated to provide bearing capacity for the whole printing head assembly, and the printing head mechanism can rotate in the frame 104 through the main shaft 301, i.e., in the event of a failure of a component within the frame 104, the printhead mechanism may be removed from the frame 104, the components in the frame 104 are overhauled, and the heat dissipation assembly arranged on the main shaft 301 can control the temperature dissipated by the thermal printing head 302, so that the printing efficiency of the thermal printing head 302 is prevented from being influenced by overhigh temperature of the thermal printing head 302. The exposure assembly used in conjunction with the thermal print head 302 can increase the quality of the film when it is printed.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.