1. The utility model provides an intelligent automatic bat printing machine of full vision, includes base (1), its characterized in that: the surface of the base (1) close to both ends is fixedly connected with second supporting arms (20), the top ends of the two second supporting arms (20) are fixedly connected with a first supporting plate (9) together, a first supporting arm (14) is fixedly connected between the opposite surfaces of the first supporting plate (9) and the base (1), the side wall of the first supporting arm (14) is connected with a transmission case (10) in a sliding manner, a driving mechanism is arranged between the transmission case (10) and the first supporting plate (9), the driving mechanism can drive the transmission case (10) to move up and down, the front wall of the first supporting arm (14) above the transmission case (10) is fixedly connected with a second supporting plate (16), the bottom surface of the second supporting plate (16) is fixedly connected with transfer printing ink mud (13), and the front wall and the rear wall penetrating through the transmission case (10) are rotatably connected with a third transmission rod (18), the front end fixedly connected with seal head pole (21) of third transfer line (18), the one end fixedly connected with that third transfer line (18) were kept away from in seal head pole (21) moves seal head (15), be provided with the rotation between third transfer line (18) and second backup pad (16) and dip in the mud device, base (1) surface mounting below second backup pad (16) has synchronous feeding mechanism.

2. The full vision intelligent automatic pad printing machine according to claim 1, characterized in that: actuating mechanism includes pneumatic cylinder (12), pneumatic cylinder (12) fixed connection is at the upper surface of first backup pad (9), the lower extreme fixedly connected with second transfer line (11) of the output shaft of pneumatic cylinder (12), the lower extreme of second transfer line (11) passes the through-hole that first backup pad (9) surface was seted up and extends to the below of first backup pad (9), the lower extreme of second transfer line (11) and the last fixed surface of transmission case (10) are connected.

3. The full vision intelligent automatic pad printing machine according to claim 1, characterized in that: rotatory mud device of dipping in includes spacing frame (19), second backup pad (16) bottom surface at bat printing ink mud (13) rear side is connected in spacing frame (19) sliding, interior roof fixedly connected with triangle stopper (17) of spacing frame (19), the rear end fixedly connected with fourth transfer line (26) of third transfer line (18), be provided with second extension spring (25) between the one end of third transfer line (18) and the interior roof of first backup pad (9) are kept away from in fourth transfer line (26), second extension spring (25) are located third transfer line (18) and fourth transfer line (26) junction directly over, wall fixedly connected with two upset stoppers (27) behind transmission case (10) of third transfer line (18) top, two upset stopper (27) are located the both sides of third transfer line (18) respectively, are located the fixed surface of third transfer line (18) of transmission case (10) front side is connected with second connecting block(s) (two connecting blocks (27) 22) The cambered surface of the second connecting block (22) is fixedly connected with two limiting connecting rods (24), and the front walls of the two limiting connecting rods (24) are fixedly connected with limiting heads (23).

4. The full vision intelligent automatic pad printing machine according to claim 1, characterized in that: synchronous feed mechanism includes runner and first drive rod (6), two the runner rotates and installs base (1) upper surface in second backup pad (16) below, is provided with the drive belt between two runners, the through-hole on second backup pad (16) surface of seting up in one of them runner top is passed to the upper end of first drive rod (6), first drive rod (6) can be vertical slip in the through-hole, fixedly connected with chute block (8) on spacing frame (19) are close to the lateral wall of first drive rod (6), chute (7) have been seted up on chute block (8), first drive rod (6) are connected in chute (7) through its fixed surface's slider sliding connection, the lower extreme of first drive rod (6) and correspond and be provided with step mechanism between the runner.

5. The full vision intelligent automatic pad printing machine according to claim 4, characterized in that: step mechanism includes ratchet (2) and first link block (5), ratchet (2) fixed connection is on the pivot surface of runner, first link block (5) fixed connection is at the lower extreme of first transfer line (6), two sides of first link block (5) articulate respectively have first pawl (3) and second pawl (28), the lower extreme of first pawl (3) and second pawl (28) respectively with the ratchet contact of ratchet (2) both sides, the lower extreme of first pawl (3) and second pawl (28) sets up to opposite with the slope direction of the ratchet of contact, is located be provided with first extension spring (4) between the opposite face of two first pawls (3) of ratchet (2) top.

6. The full vision intelligent automatic pad printing machine according to claim 1, characterized in that: the number of the printing head rods (21) is two, and the two printing head rods (21) are arranged to be a straight line.

7. The full vision intelligent automatic pad printing machine according to claim 1, characterized in that: the sliding connection mode between the transmission case (10) and the first supporting arm (14) is set to be a sliding groove and sliding block mechanism.

Background

In modern printing industry, pad printing technology has become the first choice process for printing on the surface of various objects due to its advantages of strong adaptability and good printing effect. In the traditional pad printing process, each procedure is often completed manually, so that the working efficiency is low, the deviation and the error are easy, and the large-scale production is not facilitated, and therefore, the pad printing machine is developed to replace the manual work.

An automatic pad printing machine disclosed in chinese patent CN 201920968039.0, the scheme includes a base, a pad printing machine table, a pad printing offset mechanism, a rolling stamp pad ink mechanism and a pad printing workbench; the automatic pad printing machine comprises a base, a pad printing machine table, a pad printing rubber head machine head, a movable working table and a bearing block, wherein the base is fixedly arranged on an installation platform on which the automatic pad printing machine needs to be installed, the pad printing machine table is fixedly arranged on the base, the top end of the pad printing rubber head machine head is installed, the bottom end of the pad printing machine head is provided with the bearing block of the movable working table, and the bearing block can be slidably embedded and installed in a groove at the bottom end of the pad printing machine table; the moving starting end of the clamping device is connected with a switching part, and the switching part realizes feeding and discharging of products. The scheme realizes the automation of pad printing to a certain extent and solves partial problems of the traditional pad printing process.

But the proposal also has the problems of complex structure, inconvenient operation, low automation degree of the mud dipping process and the like.

Disclosure of Invention

The invention aims to provide a full-visual intelligent automatic pad printing machine which has the advantages of simple structure, easiness in operation, capability of automatically dipping and replenishing ink during automatic printing, solves the problems in the background technology and is superior to the existing products.

In order to achieve the purpose, the invention provides the following technical scheme: a full-visual intelligent automatic pad printing machine comprises a base, wherein the surface of the base close to two ends is fixedly connected with a second supporting arm, two second supporting arms are fixedly connected with a first supporting plate at the top end together, the first supporting arm is fixedly connected between the opposite faces of the first supporting plate and the base, the side wall of the first supporting arm is connected with a transmission box in a sliding way, a driving mechanism is arranged between the transmission box and the first supporting plate and can drive the transmission box to move up and down, the front wall of the first supporting arm positioned above the transmission box is fixedly connected with a second supporting plate, the bottom surface of the second supporting plate is fixedly connected with pad printing ink paste, a third transmission rod is rotatably connected with the front wall and the rear wall of the transmission box in a penetrating way, the front end of the third transmission rod is fixedly connected with a pad printing rod, and one end of the pad printing rod far away from the third transmission rod is fixedly connected with a pad, be provided with the rotation between third transfer line and the second backup pad and dip in the mud device, surface mounting has synchronous feed mechanism on the base of second backup pad below.

Preferably, the driving mechanism comprises a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the upper surface of the first supporting plate, a second transmission rod is fixedly connected to the lower end of an output shaft of the hydraulic cylinder, the lower end of the second transmission rod penetrates through a through hole formed in the surface of the first supporting plate and extends to the lower portion of the first supporting plate, and the lower end of the second transmission rod is fixedly connected to the upper surface of the transmission case.

Preferably, the rotary dip-coating device comprises a limit frame, the limit frame is connected to the bottom surface of the second support plate at the rear side of the pad printing ink paste in a sliding manner, the inner top wall of the limit frame is fixedly connected with a triangular limit block, the rear end of the third transmission rod is fixedly connected with a fourth transmission rod, a second tension spring is arranged between one end of the fourth transmission rod far away from the third transmission rod and the inner top wall of the first supporting plate, the second tension spring is positioned right above the joint of the third transmission rod and the fourth transmission rod, the rear wall of the transmission box above the third transmission rod is fixedly connected with two overturning limiting blocks, the two overturning limiting blocks are respectively positioned at two sides of the third transmission rod, the surface of the third transmission rod positioned at the front side of the transmission box is fixedly connected with a second connecting block, the cambered surface of the second connecting block is fixedly connected with two limiting connecting rods, and the front wall of each limiting connecting rod is fixedly connected with a limiting head.

Preferably, synchronous feed mechanism includes runner and first drive lever, two the runner rotates and installs the base upper surface in second backup pad below, is provided with the drive belt between two runners, the through-hole of seting up the second backup pad surface in one of them runner top is passed to the upper end of first drive lever, first drive lever can vertically slide in the through-hole, fixedly connected with chute block on the lateral wall that spacing frame is close to first drive lever, the chute has been seted up on the chute block, first drive lever is through the slider sliding connection of its fixed surface connection in the chute, the lower extreme of first drive lever and correspond and be provided with step mechanism between the runner.

Preferably, step mechanism includes ratchet and first linkage block, ratchet fixed connection is on the pivot surface of runner, first linkage block fixed connection is at the lower extreme of first transfer line, two sides of first linkage block articulate respectively has first pawl and second pawl, the lower extreme of first pawl and second pawl respectively with the ratchet contact of ratchet both sides, the lower extreme of first pawl and second pawl sets up to opposite with the slope direction of the ratchet of contact, is located be provided with first extension spring between the opposite face of two first pawls above the ratchet.

Preferably, the number of the printing head rods is two, and the two printing head rods are arranged to be a straight line.

Preferably, the sliding connection mode between the transmission case and the first support arm is set to be a sliding groove and sliding block mechanism.

Compared with the prior art, the invention has the following beneficial effects:

first, through setting up the actuating mechanism and rotating and dipping the mud mechanism, under the cooperation of drive box (and third transfer line), have reached simple in construction, easy to operate and can dip in the mud and mend the black effect automatically while printing automatically, superior to the existing product.

By arranging the synchronous feeding mechanism and the stepping mechanism, the automatic pad printing and synchronous automatic feeding are realized under the coordination of the second supporting plate, so that the effects of simplifying the working process and improving the working efficiency are achieved.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 taken along the line A-A;

FIG. 3 is a schematic view of the structure of FIG. 2 taken along the line B-B;

FIG. 4 is a schematic view of the structure of FIG. 2 taken along the line C-C;

fig. 5 is a schematic front view of the stepping mechanism of the present invention.

In the figure: 1. a base; 2. a ratchet wheel; 3. a first pawl; 4. a first tension spring; 5. a first connection block; 6. a first drive lever; 7. a chute; 8. a chute block; 9. a first support plate; 10. a transmission case; 11. a second transmission rod; 12. a hydraulic cylinder; 13. pad printing ink paste; 14. a first support arm; 15. a pad transfer head; 16. a second support plate; 17. a triangular limiting block; 18. a third transmission rod; 19. a limiting frame; 20. a second support arm; 21. a print head bar; 22. a second connecting block; 23. a limiting head; 24. a limiting connecting rod; 25. a second tension spring; 26. a fourth transmission rod; 27. turning over the limiting block; 28. a second pawl.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1 to 5, the present invention provides a technical solution: a full-visual intelligent automatic pad printing machine comprises a base 1, wherein the surfaces of the base 1 close to two ends are fixedly connected with second supporting arms 20, the top ends of the two second supporting arms 20 are fixedly connected with a first supporting plate 9 together, a first supporting arm 14 is fixedly connected between the opposite surfaces of the first supporting plate 9 and the base 1, the side wall of the first supporting arm 14 is connected with a transmission box 10 in a sliding manner, a driving mechanism is arranged between the transmission box 10 and the first supporting plate 9 and can drive the transmission box 10 to move up and down, the front wall of the first supporting arm 14 positioned above the transmission box 10 is fixedly connected with a second supporting plate 16, the bottom surface of the second supporting plate 16 is fixedly connected with pad printing ink mud 13, a third transmission rod 18 is rotatably connected through the front wall and the rear wall of the transmission box 10, the front end of the third transmission rod 18 is fixedly connected with a pad rod 21, one end of the pad rod 21 far away from the third transmission rod 18 is fixedly connected with a pad 15, a rotary mud dipping device is arranged between the third transmission rod 18 and the second support plate 16, a synchronous feeding mechanism is arranged on the upper surface of the base 1 below the second support plate 16, when the driving mechanism drives the transmission box 10 to move downwards, the third transmission rod 18 is driven to move downwards together, the printing head rod 21 is driven to move downwards together, the printing head 15 is driven to move downwards, under the action of the rotary mud dipping device, the printing head rod 21 can turn over for 180 degrees while moving downwards, so that the printing head 15 is vertically downward, the synchronous feeding mechanism below is conveyed to the surface of a workpiece at a corresponding position to be printed, then the driving mechanism drives the transmission box 10 to move upwards, the third transmission rod 18 is driven to move upwards together, the printing head rod 21 is driven to move upwards together, the printing head 15 is driven to move upwards, and then the driving mechanism drives the transmission box 10 to move downwards again, will drive the third transfer line 18 and move downwards together, will drive the together downstream of seal head pole 21, and then drive and move seal head 15 downstream, the rotatory mud device of dipping in can drive seal head pole 21 and accomplish 180 upsets once more, make and move seal head 15 vertically upwards, actuating mechanism drives transmission case 10 upstream once more after that, when transmission case 10 returns initial position, transfer seal head 15 and transfer printing ink mud 13 laminating contact, and go round and round, realized carrying out the printing operation in succession automatically and at every turn printing after transfer seal head 15 can with transfer printing ink mud 13 laminating contact, thereby reached simple structure, easily operation and can dip in the mud in the automatic effect of mending the ink automatically in the time of automatic printing effect

Further, the driving mechanism comprises a hydraulic cylinder 12, the hydraulic cylinder 12 is fixedly connected to the upper surface of the first supporting plate 9, a second transmission rod 11 is fixedly connected to the lower end of an output shaft of the hydraulic cylinder 12, the lower end of the second transmission rod 11 penetrates through a through hole formed in the surface of the first supporting plate 9 and extends to the position below the first supporting plate 9, the lower end of the second transmission rod 11 is fixedly connected to the upper surface of the transmission case 10, and when the output shaft is driven to extend or contract by the hydraulic cylinder 12, the second transmission rod 11 can be synchronously driven to move downwards or upwards, so that the effect of driving the transmission case 10 to slide upwards and downwards is achieved.

Further, the rotary mud dipping device comprises a limiting frame 19, the limiting frame 19 is slidably connected to the bottom surface of a second supporting plate 16 on the rear side of the pad printing ink mud 13, a triangular limiting block 17 is fixedly connected to the inner top wall of the limiting frame 19, a fourth transmission rod 26 is fixedly connected to the rear end of the third transmission rod 18, a second tension spring 25 is arranged between one end of the fourth transmission rod 26, which is far away from the third transmission rod 18, and the inner top wall of the first supporting plate 9, the second tension spring 25 is positioned right above the joint of the third transmission rod 18 and the fourth transmission rod 26, two overturning limiting blocks 27 are fixedly connected to the rear wall of the transmission box 10 above the third transmission rod 18, the two overturning limiting blocks 27 are respectively positioned on two sides of the third transmission rod 18, a second connecting block 22 is fixedly connected to the surface of the third transmission rod 18 positioned on the front side of the transmission box 10, two limiting connecting rods 24 are fixedly connected to the cambered surface of the second connecting block 22, and limiting heads 23 are fixedly connected to the front walls of the two limiting connecting rods 24, when the transmission box 10 slides downwards from the initial position shown in fig. 1, the third transmission rod 18 is driven to move downwards together, and further the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 are driven to move downwards together, when the lower limiting head 23 moves to contact with the inner bottom wall close to the right of the limiting frame 19, under the limiting action of the limiting frame 19, the third transmission rod 18 is driven to rotate anticlockwise by 90 degrees, and further the fourth transmission rod 26 is driven to rotate anticlockwise by 90 degrees, at this time, the fourth transmission rod 26 is pulled by the second tension spring 25 to rotate continuously, and finally under the limiting action of the overturning limiting block 27, the third transmission rod 18 is driven to rotate 180 degrees relative to the initial position, and further the pad 15 is driven to rotate vertically downwards and reach the printing position, and then the transmission box 10 starts to slide upwards, and further the third transmission rod 18 is driven to move upwards together, and then the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 are driven to move upwards together, when the upper limiting head 23 moves to contact with the left side wall of the triangular limiting block 17, under the limiting action of the triangular limiting block 17, a rightward thrust is applied to the triangular limiting block 17, and then the limiting frame 19 is pushed to slide to the right side, then the transmission case 10 slides downwards again, and then the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 are driven to move downwards together, when the lower limiting head 23 moves to contact with the left inner bottom wall of the limiting frame 19, under the limiting action of the limiting frame 19, the lower limiting head rotates clockwise 90 degrees, and further drives the third transmission rod 18 to rotate in the same direction, and further drives the fourth transmission rod 26 to rotate clockwise 90 degrees, at this time, the second tension spring 25 pulls the fourth transmission rod 26 to continue to rotate, and finally under the limiting action of the overturning limiting block 27, rotates 180 degrees relative to the initial position, further drives the third transmission rod 18 to rotate 180 degrees relative to the initial position, thereby driving the pad 15 to rotate vertically upward, and then the transmission case 10 slides upward again, thereby driving the third transmission rod 18 to move upwards together, further driving the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 to move upwards together, when the upper stopper 23 is moved to contact the right side wall of the triangular stopper 17, under the limiting action of the triangular limiting block 17, leftward thrust can be applied to the triangular limiting block 17, further pushing the limit frame 19 to slide to the left, the pad printing head 15 and the pad printing ink mud 13 contact and are attached to each other, returning to the initial position, repeating the steps, therefore, the effect that the transfer printing head 15 is driven to rotate to vertically downwards to complete the printing action and then to vertically upwards to complete the mud dipping action along with the up-and-down sliding of the transmission case 10 is achieved.

Further, the synchronous feeding mechanism comprises rotating wheels and a first transmission rod 6, the two rotating wheels are rotatably mounted on the upper surface of the base 1 below the second support plate 16, a transmission belt is arranged between the two rotating wheels, the upper end of the first transmission rod 6 penetrates through a through hole formed in the surface of the second support plate 16 above one rotating wheel, the first transmission rod 6 can vertically slide in the through hole, a chute block 8 is fixedly connected to the side wall of the limit frame 19 close to the first transmission rod 6, a chute 7 is formed in the chute block 8, the first transmission rod 6 is slidably connected in the chute 7 through a sliding block fixedly connected to the surface of the first transmission rod, a stepping mechanism is arranged between the lower end of the first transmission rod 6 and the corresponding rotating wheel, when the limit frame 19 slides leftwards or rightwards, the chute block 8 is driven to slide leftwards or rightwards together, and further under the sliding connection effect of the sliding block fixedly connected to the surface of the first transmission rod 6 and the chute 7, the first transmission rod 6 is driven to slide up and down, and then the corresponding rotating wheels are driven to rotate in a stepping mode through the stepping mechanism, so that stepping movement of a transmission belt between the two rotating wheels is achieved, and therefore the effect that a workpiece to be printed is conveyed to a printing area synchronously along with the step of printing action is achieved.

Further, the stepping mechanism comprises a ratchet wheel 2 and a first connecting block 5, the ratchet wheel 2 is fixedly connected to the surface of a rotating shaft of the rotating wheel, the first connecting block 5 is fixedly connected to the lower end of a first transmission rod 6, two side surfaces of the first connecting block 5 are respectively hinged with a first pawl 3 and a second pawl 28, the lower ends of the first pawl 3 and the second pawl 28 are respectively contacted with ratchets on two sides of the ratchet wheel 2, the lower ends of the first pawl 3 and the second pawl 28 are set to be opposite to the inclined direction of the contacted ratchets, a first tension spring 4 is arranged between the opposite surfaces of the two first pawls 3 above the ratchet wheel 2, when the first transmission rod 6 slides downwards, the first pawl 3 and the second pawl 28 are driven to move downwards together, at the moment, due to the special shapes of the lower ends of the first pawl 3 and the second pawl 28, the first pawl 3 can push the ratchet wheel 2 to rotate clockwise, and the lower end of the second pawl 28 can slide on the surface of the ratchet wheel 2, when the first transmission rod 6 slides upwards, the first pawl 3 and the second pawl 28 are driven to move upwards together, at the moment, due to the special shapes of the lower ends of the first pawl 3 and the second pawl 28, the second pawl 28 can push the ratchet wheel 2 to rotate clockwise, and the lower end of the first pawl 3 can slide on the ratchet surface of the ratchet wheel 2, so that the effect of driving the rotating wheel corresponding to the stepping mechanism to rotate in a stepping mode along with the up-and-down sliding of the first transmission rod 6 is achieved.

Further, the print heads 21 are arranged to be two, and the two print heads 21 are arranged to be a straight line, so that when the transmission box 10 drives the third transmission rod 18 to slide up and down, the print heads 15 on the two print heads 21 can alternately dip in mud and print, and the effect of improving the working efficiency is achieved.

Further, the sliding connection between the transmission case 10 and the first support arm 14 is provided as a chute-and-slider mechanism. Through the design of spout slider for transmission case 10 is more steady smooth and easy when sliding from top to bottom, has reached the effect of equipment stability.

The working principle is as follows: when the full-vision intelligent automatic pad printing machine works, a workpiece to be printed is firstly sequentially placed at a specific position on a transmission belt between two rotating wheels, and then the hydraulic cylinder 12 is started.

When the hydraulic cylinder 12 drives the output shaft to extend, the second transmission rod 11 is synchronously driven to move downwards, so as to drive the transmission box 10 to move downwards, so as to drive the third transmission rod 18 to move downwards together, so as to drive the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 to move downwards together, when the lower limiting head 23 moves to contact with the inner bottom wall close to the right of the limiting frame 19, under the limiting action of the limiting frame 19, the second transmission rod 18 is rotated 90 degrees anticlockwise, so as to drive the third transmission rod 18 to rotate in the same direction, so as to drive the fourth transmission rod 26 to rotate 90 degrees anticlockwise, at this time, the second tension spring 25 pulls the fourth transmission rod 26 to continue rotating, finally under the limiting action of the overturning limiting block 27, the second tension spring rotates 180 degrees relative to the initial position, so as to drive the third transmission rod 18 to rotate 180 degrees relative to the initial position, so as to drive the two printing heads 15 to exchange positions up and down, and reach the printing position, and then printing the surface of the workpiece to be printed below.

Then the hydraulic cylinder 12 drives the output shaft to contract, synchronously drives the second transmission rod 11 to move upwards, further drives the transmission box 10 to move upwards, further drives the third transmission rod 18 to move upwards together, further drives the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 to move upwards together, when the limiting head 23 which is close to the upper position moves to be in contact with the left side wall of the triangular limiting block 17 at the moment, under the limiting effect of the triangular limiting block 17, rightward thrust can be applied to the triangular limiting block 17, further the limiting frame 19 is pushed to slide towards the right side, and then the printing head 15 which is close to the upper position is in contact with the transfer printing ink mud 13 to be attached.

Then the hydraulic cylinder 12 drives the output shaft to extend, synchronously drives the second transmission rod 11 to move downwards, further drives the transmission case 10 to move downwards, further drives the third transmission rod 18 to move downwards together, further drives the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 to move downwards together, when the limiting head 23 which is lower at the moment moves to be contacted with the inner bottom wall which is close to the left of the limiting frame 19, under the limiting action of the limiting frame 19, the limiting head rotates 90 degrees clockwise, further drives the third transmission rod 18 to rotate in the same direction, further drives the fourth transmission rod 26 to rotate 90 degrees clockwise, at the moment, the second tension spring 25 pulls the fourth transmission rod 26 to rotate continuously, finally under the limiting action of the turning limiting block 27, the fourth transmission rod rotates 180 degrees relative to the initial position, further drives the third transmission rod 18 to rotate 180 degrees relative to the initial position, further enables the transfer printing head 15 which just finishes the mud dipping action to rotate vertically downwards, and reaches the printing area, and then the surface of the workpiece to be printed below is printed.

Then the hydraulic cylinder 12 drives the output shaft to contract, synchronously drives the second transmission rod 11 to move upwards, further drives the transmission box 10 to move upwards, further drives the third transmission rod 18 to move upwards together, further drives the second connecting block 22, the limiting head 23 and the limiting connecting rod 24 to move upwards together, when the limiting head 23 which is close to the upper part moves to be in contact with the right side wall of the triangular limiting block 17 at the moment, under the limiting action of the triangular limiting block 17, leftward thrust can be applied to the triangular limiting block 17, further the limiting frame 19 is pushed to move leftwards, so that the printing head 15 which is close to the upper part is in contact with the transfer printing ink mud 13 and is attached to the transfer printing ink mud, the mud dipping action is completed, and the process is repeated.

Meanwhile, when the limiting frame 19 slides rightwards, the inclined groove block 8 is driven to slide rightwards together, and then under the action of the sliding connection between the sliding block fixedly connected with the surface of the first transmission rod 6 and the inclined groove 7, the first transmission rod 6 is driven to slide downwards, so that the first pawl 3 and the second pawl 28 are driven to move downwards together, at the moment, due to the special shapes of the lower ends of the first pawl 3 and the second pawl 28, the first pawl 3 can push the ratchet 2 to rotate clockwise, and the lower end of the second pawl 28 can slide on the ratchet surface of the ratchet 2; when the limiting frame 19 slides leftwards, the chute block 8 can be driven to slide leftwards together, and then the first transmission rod 6 is driven to slide upwards under the effect of the sliding connection between the sliding block fixedly connected with the surface of the first transmission rod 6 and the chute 7, and then the first pawl 3 and the second pawl 28 are driven to move upwards together, at the moment, due to the special shapes of the lower ends of the first pawl 3 and the second pawl 28, the second pawl 28 can push the ratchet 2 to rotate clockwise, the lower end of the first pawl 3 can slide on the ratchet surface of the ratchet 2, namely, when the limiting frame 19 slides leftwards or rightwards, the ratchet 2 can be driven to synchronously rotate, and then the transmission belt between the two rotating wheels is driven to synchronously move.

By arranging the driving mechanism and the rotary mud dipping mechanism, the automatic printing machine achieves the effects of simple structure, easy operation, automatic mud dipping and ink supplement during automatic printing under the matching of the transmission case and the third transmission rod, and is superior to the existing products. Meanwhile, the synchronous feeding mechanism and the stepping mechanism are arranged, and under the cooperation of the second supporting plate, automatic transfer printing and synchronous automatic feeding are realized, so that the effects of simplifying the working process and improving the working efficiency are achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.