1. The utility model provides a plastic tape slicer, includes support (1) that can stretch into the paper and can reciprocate cutter (2) of cutting the paper relatively support (1), its characterized in that: the paper feeding device is arranged on the support (1) and comprises an eccentric transmission mechanism which can be linked with an output shaft (31) of a driving motor (3) to convert the rotating motion of the output shaft (31) into the up-and-down movement of the transmission rod (4), a ratchet transmission mechanism which can convert the up-and-down movement of the transmission rod (4) into the one-way intermittent rotation of the transmission shaft (5), and a press roller (61) which can be contacted with paper to send the paper to the cutter (2), wherein the press roller (61) is rotatably arranged on the support (1), the press roller (61) is connected with the transmission shaft (5) of the ratchet transmission mechanism, the ratchet transmission mechanism is connected with the lower end of the transmission rod (4) of the eccentric transmission mechanism, an adjusting mechanism is arranged at the upper end of the transmission rod (4), and the upper end of the transmission rod (4) is connected with a rotating shaft (41) of the eccentric transmission mechanism through the adjusting mechanism, the paper cutting machine is characterized in that the rotating shaft (41) is arranged on the support (1), the rotating shaft (41) is in transmission connection with the output shaft (31), the adjusting mechanism is used for changing the distance from the upper end of the transmission rod (4) to the rotating center of the rotating shaft (41), when the distance from the upper end of the transmission rod (4) to the rotating center of the rotating shaft (41) is lengthened, the length of the paper sheets cut by the cutter (2) in each falling is long, and when the distance from the upper end of the transmission rod (4) to the rotating center of the rotating shaft (41) is shortened, the length of the paper sheets cut by the cutter (2) in each falling is shortened.

2. The plastic tape slicer of claim 1, wherein: adjustment mechanism includes turning block (42), regulating block (43), turning block (42) are connected with axis of rotation (41) be provided with adjustment tank (421) on turning block (42), regulating block (43) can be connected in adjustment tank (421) relatively adjustment tank (421) with sliding, be provided with on regulating block (43) and can fix a position the adjusting bolt on turning block (42) with regulating block (43), adjusting bolt's one end is stretched out adjustment tank (421) and is connected with the upper end rotation of transfer line (4).

3. The plastic tape slicer of claim 2, wherein: a limit screw (44) is arranged at one end of the adjusting groove (421).

4. A plastic tape slicer as claimed in any one of claims 1 to 3 wherein: an eccentric wheel (45) is arranged on a rotating shaft (41) of the eccentric transmission mechanism, the eccentric wheel (45) is linked with a cutter driving frame, the cutter (2) is arranged at the bottom end of the cutter driving frame, the cutter driving frame is connected with the support (1) through a side wall sliding rail, and when the rotating shaft (41) rotates, the cutter driving frame is driven by the eccentric wheel (45) to move up and down relative to the support (1).

5. The plastic tape slicer of claim 4, wherein: the cutter driving frame comprises a connecting portion (21) and a transmission portion (22), the transmission portion (22) is connected with the support (1) through a side wall slide rail, the cutter (2) is arranged on the bottom surface of the transmission portion (22), an adjusting screw rod is arranged at the top of the transmission portion (22), the adjusting screw rod is connected with the connecting portion (21), the connecting portion (21) is a hollow shell structure, the eccentric wheel (45) is located in an inner cavity of the shell structure, a vertically-arranged waist-shaped hole is formed in the side wall of the shell structure, and the rotating shaft (41) penetrates through the shell structure through the waist-shaped hole.

6. The plastic tape slicer of claim 5, wherein: the paper cutting table (11) for placing paper is arranged on the support (1), the bottom of the transmission part (22) is provided with a transmission plate body, the transmission plate body is located above the paper cutting table (11), the cutter (2) is located on the bottom surface of the transmission plate body, guide rods (23) are arranged on the bottom surfaces of the transmission plate bodies on the two sides of the cutter (2) respectively, guide holes are formed in the paper cutting table (11) corresponding to the guide rods (23), and the guide rods (23) are arranged in the corresponding guide holes in a penetrating mode.

7. The plastic tape slicer of claim 6, wherein: a return spring is arranged in the guide hole and is connected with the guide rod (23).

8. The plastic tape slicer of claim 7, wherein: set up paper feeding platform (6) in paper cutting platform (11) the place ahead, compression roller (61) are connected on paper feeding platform (6), the top surface of paper feeding platform (6) and the top surface looks parallel and level of paper cutting platform (11), are provided with nipper (62) on paper feeding platform (6) top surface in compression roller (61) the place ahead, leave the gap that the paper passes through between the bottom surface of nipper (62) and paper feeding platform (6) top surface.

9. A plastic tape slicer as claimed in any one of claims 1 to 3 wherein: the ratchet wheel transmission mechanism comprises a swinging wheel (52), a ratchet wheel (51) and a transmission shaft (5), the transmission shaft (5) can be rotatably arranged on the bracket (1), one end of the transmission shaft (5) is in transmission connection with one end of a pressing roller (61) through a gear set, the other end of the transmission shaft (5) is connected with the ratchet wheel (51), the swinging wheel (52) can be connected on the transmission shaft (5) in a swinging way, the swinging wheel (52) is eccentrically connected with the lower end of the transmission rod (4), a swinging wheel concave cavity is arranged on the swinging wheel (52), a ratchet (53) which can rotate relative to the swinging wheel (52) is arranged in the swinging wheel concave cavity, the ratchet (53) is connected with the inner wall of the swinging wheel concave cavity through a ratchet reset spring (54), and when the lower end of the transmission rod moves from top to bottom, the ratchet (53) is meshed with the ratchet wheel (51) to drive the transmission shaft (5) to rotate, when the lower end of the transmission rod moves from bottom to top, the ratchet (53) is separated from the ratchet wheel (51).

10. A plastic tape slicer as claimed in any one of claims 1 to 3 wherein: the support (1) comprises a guide post (12) and a sliding seat (13) capable of moving up and down along the guide post (12), a top plate (121) is arranged at the top of the guide post (12), the sliding seat (13) is connected with the top plate (121) through an adjusting screw rod (131), and the driving motor (3) and a rotating shaft (41) of the eccentric transmission mechanism are both arranged on the sliding seat (13).

Background

The existing Chinese patent application with the application number of CN201310456676.7 named as 'one kind of paper cutter' discloses a paper cutter, which comprises an operation table, a paper cutting mechanism and an electrical control box, wherein the bottom of the paper cutter is connected with the electrical control box, and the paper cutter is characterized in that: the paper cutter is equipped with the operation panel, be equipped with paper cutting mechanism on the operation panel, paper cutting mechanism fixed connection operation panel, the both sides of operation panel are equipped with apart from the baffle, both sides are apart from baffle and operation panel fixed connection, respectively be equipped with an vice aspiration channel on the both sides apart from the baffle, the inside main aspiration channel that is equipped with of operation panel, main aspiration channel and vice aspiration channel are connected to electrical control box through the wire, operation panel lower extreme connection control panel, control panel passes through wire connection electrical control box, waste recovery cabinet, main aspiration channel and vice aspiration channel are connected with the waste recovery cabinet. The paper cutting machine has the beneficial effects that a user can open the air suction barrel while cutting paper through the control panel, debris generated in the operation of the equipment can be quickly sucked into the waste recovery cabinet, and the use is more convenient; has the advantages of simple structure, high production efficiency, personal safety of workers and the like. However, the length of the paper cut by the paper cutter is not suitable to be adjusted, the using effect is not ideal, an electric control box is required to control, and the structure is complex, so that the structure of the paper cutter needs to be further improved.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the plastic tape slicer which adopts a pure mechanical structure, has a simple structure and low failure rate and is convenient for length adjustment of cut paper aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this plastic tape slicer, including the support that can stretch into the paper and the cutter that can reciprocate the cutting paper relative to the support, its characterized in that: the paper feeding device is arranged on the bracket and comprises an eccentric transmission mechanism which can be linked with an output shaft of a driving motor to convert the rotating motion of the output shaft into the up-and-down motion of a transmission rod, a ratchet transmission mechanism which can convert the up-and-down motion of the transmission rod into the unidirectional intermittent rotation of the transmission shaft, and a press roller which can be contacted with paper to send the paper to a cutter, wherein the press roller can be rotatably arranged on the bracket and is connected with the transmission shaft of the ratchet transmission mechanism, the ratchet transmission mechanism is connected with the lower end of the transmission rod of the eccentric transmission mechanism, the upper end of the transmission rod is provided with an adjusting mechanism, the upper end of the transmission rod is connected with the rotating shaft of the eccentric transmission mechanism through the adjusting mechanism, the rotating shaft is arranged on the bracket and is in transmission connection with the output shaft, and the adjusting mechanism is used for changing the distance from the upper end of the transmission rod to the rotating center of the rotating shaft, when the distance from the upper end of the transmission rod to the rotating center of the rotating shaft is longer, the length of the paper sheet cut by the cutter in each falling is longer, and when the distance from the upper end of the transmission rod to the rotating center of the rotating shaft is shorter, the length of the paper sheet cut by the cutter in each falling is shorter.

As an improvement, the adjusting mechanism comprises a rotating block and an adjusting block, the rotating block is connected with the rotating shaft, an adjusting groove is formed in the rotating block, the adjusting block can be connected to the adjusting groove in a sliding mode relative to the adjusting groove, an adjusting bolt capable of positioning the adjusting block on the rotating block is arranged on the adjusting block, and one end of the adjusting bolt extends out of the adjusting groove and is connected with the upper end of the transmission rod in a rotating mode.

In a further improvement, a limit screw is arranged at one end of the adjusting groove in a penetrating way.

As an improvement, an eccentric wheel is arranged on a rotating shaft of the eccentric transmission mechanism and is linked with a cutter driving frame, the cutter is arranged at the bottom end of the cutter driving frame, the cutter driving frame is connected with a support through a side wall sliding rail, and when the rotating shaft rotates, the cutter driving frame is driven by the eccentric wheel to move up and down relative to the support.

The improved structure is characterized in that the cutter driving frame comprises a connecting portion and a transmission portion, the transmission portion is connected with the support through a side wall sliding rail, the cutter is arranged on the bottom surface of the transmission portion, an adjusting screw rod is arranged at the top of the transmission portion and connected with the connecting portion, the connecting portion is of a hollow shell structure, the eccentric wheel is located in an inner cavity of the shell structure, a vertically-arranged waist-shaped hole is formed in the side wall of the shell structure, and the rotating shaft penetrates through the shell structure through the waist-shaped hole.

The paper cutting machine is characterized in that a paper cutting table for placing paper is arranged on the support, a transmission plate body is arranged at the bottom of the transmission part and located above the paper cutting table, the cutter is located on the bottom surface of the transmission plate body, guide rods are respectively arranged on the bottom surfaces of the transmission plate bodies on the two sides of the cutter, guide holes are formed in the paper cutting table corresponding to the guide rods, and the guide rods penetrate through the corresponding guide holes.

In a further improvement, a return spring is arranged in the guide hole and connected with the guide rod.

The paper feeding table is arranged in front of the paper cutting table, the compression roller is connected to the paper feeding table, the top surface of the paper feeding table is flush with the top surface of the paper cutting table, the paper pressing plate is arranged on the top surface of the paper feeding table in front of the compression roller, and a gap for paper to pass through is reserved between the bottom surface of the paper pressing plate and the top surface of the paper feeding table.

The ratchet wheel transmission mechanism comprises a swinging wheel, a ratchet wheel and a transmission shaft, wherein the transmission shaft is rotatably arranged on a support, one end of the transmission shaft is in transmission connection with one end of a pressing roller through a gear set, the other end of the transmission shaft is connected with the ratchet wheel, the swinging wheel is connected to the transmission shaft in a swinging manner, the swinging wheel is eccentrically connected with the lower end of the transmission shaft, a swinging wheel concave cavity is formed in the swinging wheel, a ratchet capable of rotating relative to the swinging wheel is arranged in the swinging wheel concave cavity, the ratchet wheel is connected with the inner wall of the swinging wheel concave cavity through a ratchet reset spring, when the lower end of the transmission shaft moves from top to bottom, the ratchet wheel is meshed with the ratchet wheel to drive the transmission shaft to rotate, and when the lower end of the transmission shaft moves from bottom to top, the ratchet wheel is separated from the ratchet wheel.

As an improvement, the support comprises a guide post and a sliding seat capable of moving up and down along the guide post, a top plate is arranged at the top of the guide post, the sliding seat is connected with the top plate through an adjusting screw rod, and the driving motor and the rotating shaft of the eccentric transmission mechanism are both arranged on the sliding seat.

Compared with the prior art, the invention has the advantages that: the up-and-down movement of the cutter and the feeding of the paper are realized by adopting a pure mechanical structure, the electrification control is not needed, the structure is simple, the cost is low, and the failure rate is low; the cutting knife can move up and down and feed paper simultaneously by the driving motor, so that the transmission efficiency is high, the structure is compact, the weight is light, and the occupied space of the plastic tape slicer is reduced; the distance from the upper end of the transmission rod to the rotating center of the rotating shaft can be changed through the adjusting mechanism, and through a series of mechanical transmission, the length of paper conveyed by the pressing roller is changed, so that paper with different lengths can be cut, the cutting processing of the paper with different lengths is realized, and the production requirement is met.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of FIG. 1 at another angle;

FIG. 3 is a perspective view of FIG. 2 at another angle;

FIG. 4 is a perspective view of FIG. 3 at another angle;

FIG. 5 is an exploded view of the structure of FIG. 1;

FIG. 6 is an exploded view of FIG. 5 at another angle;

FIG. 7 is an exploded view of the alternative construction of FIG. 1;

FIG. 8 is an enlarged view of portion I of FIG. 3;

fig. 9 is an enlarged view of a portion II in fig. 6.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 9, the plastic tape slicer of the present embodiment includes a support 1 capable of inserting a paper and a cutter 2 capable of moving up and down to cut the paper with respect to the support 1, wherein a paper feeder is disposed on the support 1, the paper feeder includes an eccentric transmission mechanism capable of linking with an output shaft 31 of a driving motor 3 to convert the rotation of the output shaft 31 into the up and down movement of a transmission rod 4, a ratchet transmission mechanism capable of converting the up and down movement of the transmission rod 4 into a unidirectional intermittent rotation of the transmission shaft 5, a press roller 61 capable of contacting with the paper to feed the paper to the cutter 2, the press roller 61 is rotatably disposed on the support 1, the press roller 61 is connected to a transmission shaft 5 of the ratchet transmission mechanism, the ratchet transmission mechanism is connected to a lower end of the transmission rod 4 of the eccentric transmission mechanism, an upper end of the transmission rod 4 is provided with an adjusting mechanism, an upper end, the rotating shaft 41 is arranged on the bracket 1, the rotating shaft 41 is in transmission connection with the output shaft 31, the adjusting mechanism is used for changing the distance from the upper end of the transmission rod 4 to the rotating center of the rotating shaft 41, when the distance from the upper end of the transmission rod 4 to the rotating center of the rotating shaft 41 is longer, the length side of a paper sheet cut by the cutter 2 in each falling is longer, and when the distance from the upper end of the transmission rod 4 to the rotating center of the rotating shaft 41 is shorter, the length of the paper sheet cut by the cutter 2 in each falling is shorter. The driving motor 3 is connected with the switch 32 and the power supply through lines.

The adjusting mechanism comprises a rotating block 42 and an adjusting block 43, the rotating block 42 is connected with the rotating shaft 41, an adjusting groove 421 is formed in the rotating block 42, the adjusting block 43 can be connected in the adjusting groove 421 in a sliding mode relative to the adjusting groove 421, an adjusting bolt capable of positioning the adjusting block 43 on the rotating block 42 is arranged on the adjusting block 43, and one end of the adjusting bolt extends out of the adjusting groove 421 and is connected with the upper end of the transmission rod 4 in a rotating mode. A limit screw 44 is inserted through one end of the adjusting groove 421. An eccentric wheel 45 is arranged on a rotating shaft 41 of the eccentric transmission mechanism, the eccentric wheel 45 is linked with a cutter driving frame, a cutter 2 is arranged at the bottom end of the cutter driving frame, the cutter driving frame is connected with a support 1 through a side wall sliding rail, and when the rotating shaft 41 rotates, the cutter driving frame is driven by the eccentric wheel 45 to move up and down relative to the support 1.

The cutter driving frame comprises a connecting portion 21 and a transmission portion 22, the transmission portion 22 is connected with the support 1 through a side wall sliding rail, the cutter 2 is arranged on the bottom surface of the transmission portion 22, an adjusting screw rod is arranged at the top of the transmission portion 22 and connected with the connecting portion 21, the connecting portion 21 is of a hollow shell structure, the eccentric wheel 45 is located in an inner cavity of the shell structure, a vertically-arranged waist-shaped hole is formed in the side wall of the shell structure, and the rotating shaft 41 penetrates through the shell structure through the waist-shaped hole. The paper cutting table 11 for placing paper is arranged on the support 1, the transmission plate body is arranged at the bottom of the transmission portion 22 and located above the paper cutting table 11, the cutter 2 is located on the bottom surface of the transmission plate body, the guide rods 23 are respectively arranged on the bottom surfaces of the transmission plate bodies on the two sides of the cutter 2, guide holes are formed in the paper cutting table 11 corresponding to the guide rods 23, and the guide rods 23 penetrate through the corresponding guide holes. A return spring is provided in the guide hole, and the return spring is connected to the guide rod 23. The paper feeding table 6 is arranged in front of the paper cutting table 11, the press roller 61 is connected to the paper feeding table 6, the top surface of the paper feeding table 6 is flush with the top surface of the paper cutting table 11, the paper pressing plate 62 is arranged on the top surface of the paper feeding table 6 in front of the press roller 61, and a gap for paper to pass through is reserved between the bottom surface of the paper pressing plate 62 and the top surface of the paper feeding table 6.

The ratchet wheel transmission mechanism comprises a swing wheel 52, a ratchet wheel 51 and a transmission shaft 5, wherein the transmission shaft 5 is rotatably arranged on the bracket 1, one end of the transmission shaft 5 is in transmission connection with one end of a press roller 61 through a gear set, the other end of the transmission shaft 5 is connected with the ratchet wheel 51, the swing wheel 52 is in swing connection with the transmission shaft 5, the swing wheel 52 is eccentrically connected with the lower end of the transmission rod 4, a swing wheel cavity is arranged on the swing wheel 52, a ratchet 53 capable of rotating relative to the swing wheel 52 is arranged in the swing wheel cavity, the ratchet 53 is connected with the inner wall of the swing wheel cavity through a ratchet reset spring 54, when the lower end of the transmission rod moves from top to bottom, the ratchet 53 is meshed with the ratchet wheel 51 to drive the transmission shaft 5 to rotate, and when the lower end of the. The above-mentioned gear set includes a first gear at the end of the transmission shaft 5, a second gear provided on the paper feeding table 6 and a third gear connected with the end of the press roller 61, and the specific engagement structure of the gear set is well known in the art and will not be described in detail.

The support 1 comprises a guide column 12 and a sliding seat 13 capable of moving up and down along the guide column 12, a top plate 121 is arranged at the top of the guide column 12, the sliding seat 13 is connected with the top plate 121 through an adjusting screw 131, and the driving motor 3 and a rotating shaft 41 of the eccentric transmission mechanism are both arranged on the sliding seat 13. The top of the adjusting screw 131 is provided with a rotating wheel, the height of the sliding seat 13 relative to the paper cutting table 11 can be changed by rotating the rotating wheel, and a positioning bolt can be arranged on the side of the sliding seat 13, so that the sliding seat 13 can be conveniently positioned after moving up and down.

The second embodiment of the plastic strip slicer comprises a bracket 1 which can extend into paper and a cutter 2 which can move up and down relative to the bracket 1 to cut the paper, wherein a paper feeder is arranged on the bracket 1, the paper feeder comprises an eccentric transmission mechanism which can be linked with an output shaft 31 of a driving motor 3 to convert the rotating motion of the output shaft 31 into the up and down movement of a transmission rod 4, a ratchet transmission mechanism which can convert the up and down movement of the transmission rod 4 into the unidirectional intermittent rotation of a transmission shaft 5, a press roller 61 which can be contacted with the paper and send the paper to the cutter 2, the press roller 61 is rotatably arranged on the bracket 1, the press roller 61 is connected with the transmission shaft 5 of the ratchet transmission mechanism, the ratchet transmission mechanism is connected with the lower end of the transmission rod 4 of the eccentric transmission mechanism, the upper end of the transmission rod 4 is provided with an adjusting mechanism, the upper end of the transmission rod 4 is connected with a rotating shaft 41 of the eccentric transmission mechanism through the adjusting mechanism, the rotating shaft 41 is arranged on the bracket 1, the rotating shaft 41 is in transmission connection with the output shaft 31, the adjusting mechanism is used for changing the distance from the upper end of the transmission rod 4 to the rotating center of the rotating shaft 41, when the distance from the upper end of the transmission rod 4 to the rotating center of the rotating shaft 41 is longer, the length side of a paper sheet cut by the cutter 2 in each falling is longer, and when the distance from the upper end of the transmission rod 4 to the rotating center of the rotating shaft 41 is shorter, the length of the paper sheet cut by the cutter 2 in each falling is shorter. The driving motor 3 is connected with the switch 32 and the power supply through lines.

The adjusting mechanism comprises a rotating block 42 and an adjusting block 43, the rotating block 42 is connected with the rotating shaft 41, an adjusting groove 421 is formed in the rotating block 42, the adjusting block 43 can be connected in the adjusting groove 421 in a sliding mode relative to the adjusting groove 421, an adjusting bolt capable of positioning the adjusting block 43 on the rotating block 42 is arranged on the adjusting block 43, and one end of the adjusting bolt extends out of the adjusting groove 421 and is connected with the upper end of the transmission rod 4 in a rotating mode. A limit screw 44 is inserted through one end of the adjusting groove 421.

The eccentric transmission mechanism is characterized in that a Luo Ke triangular wheel is arranged on a rotating shaft 41 of the eccentric transmission mechanism, a connecting rod is arranged at the top of the cutter 2, a square frame body is arranged at the top of the connecting rod, and the Luo Ke triangular wheel is arranged in the square frame body. When the rotating shaft 41 rotates, the Luo Ke triangular wheel rotates in the square frame body to drive the square frame body to move up and down, so that the cutter is driven by the Luo Ke triangular wheel to move up and down relative to the support 1. Of course, other eccentric transmission structures can be adopted to realize the up-and-down movement of the cutter, and the detailed description is omitted.

The cutter driving frame comprises a connecting portion 21 and a transmission portion 22, the transmission portion 22 is connected with the support 1 through a side wall sliding rail, the cutter 2 is arranged on the bottom surface of the transmission portion 22, an adjusting screw rod is arranged at the top of the transmission portion 22 and connected with the connecting portion 21, the connecting portion 21 is of a hollow shell structure, the eccentric wheel 45 is located in an inner cavity of the shell structure, a vertically-arranged waist-shaped hole is formed in the side wall of the shell structure, and the rotating shaft 41 penetrates through the shell structure through the waist-shaped hole. The paper cutting table 11 for placing paper is arranged on the support 1, the transmission plate body is arranged at the bottom of the transmission portion 22 and located above the paper cutting table 11, the cutter 2 is located on the bottom surface of the transmission plate body, the guide rods 23 are respectively arranged on the bottom surfaces of the transmission plate bodies on the two sides of the cutter 2, guide holes are formed in the paper cutting table 11 corresponding to the guide rods 23, and the guide rods 23 penetrate through the corresponding guide holes. A return spring is provided in the guide hole, and the return spring is connected to the guide rod 23. The paper feeding table 6 is arranged in front of the paper cutting table 11, the press roller 61 is connected to the paper feeding table 6, the top surface of the paper feeding table 6 is flush with the top surface of the paper cutting table 11, the paper pressing plate 62 is arranged on the top surface of the paper feeding table 6 in front of the press roller 61, and a gap for paper to pass through is reserved between the bottom surface of the paper pressing plate 62 and the top surface of the paper feeding table 6.

The ratchet wheel transmission mechanism comprises a swing wheel 52, a ratchet wheel 51 and a transmission shaft 5, wherein the transmission shaft 5 is rotatably arranged on the bracket 1, one end of the transmission shaft 5 is in transmission connection with one end of a press roller 61 through a gear set, the other end of the transmission shaft 5 is connected with the ratchet wheel 51, the swing wheel 52 is in swing connection with the transmission shaft 5, the swing wheel 52 is eccentrically connected with the lower end of the transmission rod 4, a swing wheel cavity is arranged on the swing wheel 52, a ratchet 53 capable of rotating relative to the swing wheel 52 is arranged in the swing wheel cavity, the ratchet 53 is connected with the inner wall of the swing wheel cavity through a ratchet reset spring 54, when the lower end of the transmission rod moves from top to bottom, the ratchet 53 is meshed with the ratchet wheel 51 to drive the transmission shaft 5 to rotate, and when the lower end of the transmission rod moves from bottom to top, the ratchet 53 is separated from the ratchet wheel 51. The above-mentioned gear set includes a first gear at the end of the transmission shaft 5, a second gear provided on the paper feeding table 6 and a third gear connected with the end of the press roller 61, and the specific engagement structure of the gear set is well known in the art and will not be described in detail.

The support 1 comprises a guide column 12 and a sliding seat 13 capable of moving up and down along the guide column 12, a top plate 121 is arranged at the top of the guide column 12, the sliding seat 13 is connected with the top plate 121 through an adjusting screw 131, and the driving motor 3 and a rotating shaft 41 of the eccentric transmission mechanism are both arranged on the sliding seat 13. The top of the adjusting screw 131 is provided with a rotating wheel, the height of the sliding seat 13 relative to the paper cutting table 11 can be changed by rotating the rotating wheel, and a positioning bolt can be arranged on the side of the sliding seat 13, so that the sliding seat 13 can be conveniently positioned after moving up and down.

The working principle is as follows: the driving motor drives the rotating shaft to rotate, so that the rotating motion is converted into the up-and-down movement of the cutter and the up-and-down movement of the transmission rod, the transmission rod simultaneously drives the oscillating wheel to oscillate up and down, the oscillating wheel drives the ratchet wheel to rotate in a unidirectional and intermittent manner, the ratchet wheel drives the compression roller to rotate in a unidirectional and intermittent manner through the transmission shaft, so that paper is fed to the cutter in an intermittent manner, and the cutter cuts the paper.

Because the top of the transmission rod is provided with the adjusting mechanism, the distance from the top end of the transmission rod to the rotating center of the rotating shaft can be changed, so that the length of the paper conveyed by the pressing roller is changed, and the paper with different lengths can be cut.