CN216359850U

CN216359850U - Printing machine

Info

Publication number: CN216359850U
Application number: CN202122965618.XU
Authority: CN
Inventors: 李伟民; 杜如; 朱燕飞; 段华铃
Original assignee: Shaoxing Watson Printing Co ltd
Current assignee: Shaoxing Watson Printing Co ltd
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-04-22
Anticipated expiration: 2031-11-27

Abstract

The application relates to a printing machine, which relates to the technical field of printing and dyeing equipment and comprises a rack, wherein a printing roller and a pressure-bearing roller are rotatably arranged on the rack, a blocking device for blocking the roller surface of the pressure-bearing roller is arranged on the rack, the blocking device comprises a cloth winding roller, the cloth winding roller is rotatably arranged on the rack, and blocking cloth for blocking the roller surface of the pressure-bearing roller is wound on the cloth winding roller; the winding roller is rotatably arranged on the rack and is used for winding the barrier cloth; and the driving mechanism is arranged on the rack and is used for driving the winding roller to rotate. This application blocks cloth through blocking on the guide roll and shifts out the guide roll and bypass the backing roll, blocks cloth and blocks the backing roll surface at cloth both ends, and actuating mechanism starts to drive the wind-up roll and rotates, and the wind-up roll rolls around the backing roll and stops the cloth and roll to having reduced the direct impression of mill base on the embossing roll probability on the backing roll, has kept the stamp effect of cloth.

Description

Printing machine

Technical Field

The application relates to the technical field of printing and dyeing equipment, in particular to a printing machine.

Background

The calico printing machine is comparatively common printing and dyeing equipment in the modern textile industry, and the kind of calico printing machine mainly divide into: thermal transfer printing machines, digital printing machines (universal printers), flat screen printing machines, circular screen printing machines, printing machines on a walking board and the like, wherein thermal transfer printing is a new printing and dyeing process which is gradually developed internationally in recent years.

In the related art, a transfer printing machine is an apparatus using a thermal transfer printing process, in which transfer printing paper printed with a design and color pattern is placed on a printing roller of the transfer printing machine, one side of the transfer printing paper printed with the design and color pattern is closely attached to a cloth on a pressure roller, a dye on the transfer printing paper is sublimated under the action of heat and pressure, and then the design and color pattern on the transfer printing paper is transferred to the cloth, thereby forming various required patterns on the cloth.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the embossing roll impresses the cloth, because the cloth printing and dyeing face is less than the embossing roll printing face, the transfer printing paper on the embossing roll directly impresses easily on the backing roll of cloth both sides to when the cloth offset on the backing roll, be infected with the design on the backing roll on the cloth easily, thereby reduced the stamp effect of cloth.

SUMMERY OF THE UTILITY MODEL

In order to keep the stamp effect of cloth, this application provides a calico printing machine.

The application provides a calico printing machine adopts following technical scheme:

a printing machine comprises a rack, wherein a printing roller for printing cloth and a pressure-bearing roller for carrying the cloth are rotatably arranged on the rack, a blocking device for blocking the roller surface of the pressure-bearing roller is arranged on the rack, and the blocking device comprises a blocking plate and a blocking plate;

the cloth winding roller is rotatably arranged on the rack, and blocking cloth for blocking the roller surface of the pressure bearing roller is wound on the cloth winding roller;

the winding roller is rotatably arranged on the rack and is used for winding the blocking cloth bypassing the bearing roller;

and the driving mechanism is arranged on the rack and is used for driving the winding roller to rotate.

By adopting the technical scheme, the guide roller is rotated, the blocking cloth on the guide roller moves out of the guide roller to bypass the pressure-bearing roller, and the blocking cloth blocks the roller surfaces of the pressure-bearing rollers at the two ends of the cloth; the driving mechanism is started to drive the winding roller to rotate, the winding roller winds the blocking cloth bypassing the pressure bearing roller, so that the probability that color paste on the printing roller is directly printed on the pressure bearing roller is reduced, the adverse effect on the printing of the cloth caused by the fact that the color paste on the roller surface of the pressure bearing roller is stained on the cloth is reduced, and the printing effect of the cloth is kept.

Optionally, the drive mechanism comprises;

the driving motor is arranged on the rack, and an output shaft of the driving motor is connected with the embossing roll;

the rotating wheel is rotatably arranged on the rack and is detachably connected with the winding roller through a connecting assembly;

and the driving belt is sleeved on the embossing roller and the rotating wheel.

Through adopting above-mentioned technical scheme, driving motor starts to drive the embossing roll and rotates, and the embossing roll rotates and drives the drive belt and rotate, and the drive belt rotates and drives the drive wheel and rotate, and the drive wheel rotates and drives the wind-up roll and rotate to realize that driving motor drives the wind-up roll and rotates.

Optionally, the connection assembly comprises;

the elastic plate is mounted on the winding roller in a sliding manner;

and the connecting spring is arranged on the winding roller and is connected with the elastic plate, and the elastic plate is in clamping fit with the rotating wheel under the action of the connecting spring.

Through adopting above-mentioned technical scheme, the wind-up roll is to blockking that the cloth is rolled up, after the rolling is accomplished, extrude coupling spring and drive the diving board and move into in the wind-up roll and break away from with the runner, take off the wind-up roll, block cloth on the wind-up roll and handle, after the processing is accomplished, the diving board on the empty wind-up roll of extrusion moves into the wind-up roll, insert the wind-up roll and make the diving board cooperate with the runner joint under the coupling spring effect in the runner, thereby accomplish the dismantlement of wind-up roll and be connected, be convenient for to blocking the collection and the change of cloth.

Optionally, a cloth discharging device for discharging cloth is arranged on the frame, and the cloth discharging device comprises;

the guide roller is rotatably arranged on the rack and used for guiding out the cloth;

the sliding block is arranged on the rack in a sliding manner;

the extrusion roller is rotatably arranged on the sliding block and is matched with the guide roller to extrude the cloth;

and the moving assembly is arranged on the rack and is used for driving the sliding block to move.

Through adopting above-mentioned technical scheme, the cloth after the stamp is derived through the draw-out roll, and the removal subassembly starts to drive the slider and removes, and the slider removes and drives the squeeze roll and remove, and the squeeze roll removes and extrudees the cloth on the draw-out roll to stamp compaction on the cloth has improved the stamp quality of cloth.

Optionally, the moving assembly comprises;

the rotating screw rod is rotatably connected to the rack and is in threaded connection with the sliding block;

and the rotating motor is arranged on the rack, and an output shaft of the rotating motor is connected with the rotating screw rod.

By adopting the technical scheme, the rotating motor is started to drive the rotating screw rod to rotate, the rotating screw rod rotates to drive the sliding block to move, and the sliding block moves to drive the extrusion roller to move, so that the rotating motor is completed to drive the extrusion roller to move.

Optionally, a tensioning device for tensioning the cloth on the cloth outlet roller is arranged on the frame, and the tensioning device comprises;

the two limiting hooks are arranged on the rack in a sliding manner;

the tensioning rollers are rotatably arranged on the two limiting hooks and are used for tensioning the cloth;

and the traction mechanism is arranged on the rack and is used for driving the limiting hook to move.

Through adopting above-mentioned technical scheme, drive two spacing hooks of drive move in the drive of drive mechanism, and two spacing hooks move and drive the tensioning roller and move, and the tensioning roller removes and carries out the tensioning to the cloth to reduced when the cloth is derived because the cloth is not hard up and make the cloth go up the fixed insufficient probability of stamp.

Optionally, the traction mechanism comprises;

the rotating rod is rotatably connected to the rack;

the two driven wheels are arranged on the rotating rod and are wound with ropes connected with the limiting hooks;

and the rotating assembly is arranged on the rack and is used for driving the rotating shaft to rotate.

Through adopting above-mentioned technical scheme, rotating assembly starts to drive the pivot and rotates, and the pivot rotates and drives two and rotate from the driving wheel, and two drive the rope from the driving wheel and remove, and the rope removes and drives spacing hook and remove, and spacing hook removes and drives the tensioning roller and remove to the realization is to the removal of tensioning roller.

Optionally, the rotating assembly comprises;

the rotating motor is arranged on the rack;

the first chain wheel is rotatably arranged on the rack and connected with an output shaft of the rotating motor;

the second chain wheel is arranged on the rotating shaft;

and the transmission chain is sleeved on the first chain wheel and the second chain wheel and is meshed with the first chain wheel and the second chain wheel.

Through adopting above-mentioned technical scheme, the rotating electrical machines starts to drive first sprocket and rotates, and first sprocket rotates and drives the drive chain and remove, and drive chain removes electronic second sprocket and rotates, and second sprocket rotates and drives the pivot and rotate, and the pivot rotates and drives two and rotate from the driving wheel to realize that rotating electrical machines control two and rotate from the driving wheel.

Optionally, the elastic plate is provided with a chamfer. Through adopting above-mentioned technical scheme, set up the chamfer on the bullet board to be convenient for play the board and rotate the wheel and carry out the joint.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by rotating the guide roller, the blocking cloth on the guide roller moves out of the guide roller and bypasses the pressure-bearing roller, the blocking cloth blocks the roller surfaces of the pressure-bearing rollers at two ends of the cloth, the driving mechanism is started to drive the winding roller to rotate, and the winding roller winds the blocking cloth bypassing the pressure-bearing roller, so that the probability that color paste on the printing roller is directly printed on the pressure-bearing rollers is reduced, the adverse effect of the color paste on the roller surfaces of the pressure-bearing rollers on the printing of the cloth is reduced, and the printing effect of the cloth is kept;

2. the driving motor is started to drive the printing roller to rotate, the printing roller rotates to drive the driving belt to rotate, the driving belt rotates to drive the driving wheel to rotate, and the driving wheel rotates to drive the winding roller to rotate, so that the driving motor drives the winding roller to rotate;

3. the traction mechanism is started to drive the two limit hooks to move, the two limit hooks move to drive the tensioning roller to move, and the tensioning roller moves to tension the cloth, so that the probability that printing on the cloth is insufficiently fixed due to looseness of the cloth when the cloth is led out is reduced.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic plan view of the blocking device, the dispensing device and the tensioning device of the present application, with a mounting plate hidden and showing the movement traces of the cloth, transfer paper and blocking cloth;

FIG. 3 is a schematic view of the configuration of the blocking device of the present application, wherein a mounting plate is hidden;

FIG. 4 is a schematic structural view of a coupling assembly of the present application wherein the wind-up roll has been exploded;

fig. 5 is a schematic view of the tensioner of the present application.

Reference numerals: 1. a frame; 11. a printing roller; 12. a backing roll; 13. mounting a plate; 14. a cloth feeding roller; 15. a cloth outlet roller; 16. a rotating shaft; 17. a paper winding roller; 18. a paper collecting roller; 19. a cloth guide roller; 2. a blocking device; 21. a cloth winding roller; 22. a wind-up roll; 23. a drive mechanism; 24. a drive motor; 25. a rotating wheel; 26. a transmission belt; 27. a synchronizing wheel; 28. a barrier cloth; 3. a connecting assembly; 31. a spring plate; 32. a connecting spring; 33. inserting grooves; 34. a limiting hole; 35. chamfering; 4. a cloth discharging device; 41. a guide roller; 42. a slider; 43. a squeeze roll; 44. a moving assembly; 45. a sliding groove; 46. rotating the screw rod; 47. rotating the motor; 5. a tensioning device; 51. a limiting hook; 52. a tension roller; 53. a traction mechanism; 54. rotating the rod; 55. a driven wheel; 56. a rotating assembly; 561. a rotating electric machine; 562. a first sprocket; 563. a second sprocket; 564. a drive chain; 57. a rope.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses calico printing machine.

Referring to fig. 1 and 2, the printing machine includes a frame 1, a printing roller 11 rotatably disposed on the frame 1 and used for printing the fabric, and a pressure roller 12 for receiving the fabric, and the frame 1 is provided with a blocking device 2 for blocking a roller surface of the pressure roller 12.

Referring to fig. 1 and 2, the frame 1 includes two mounting plates 13 horizontally fixed on the ground at intervals, and the two mounting plates 13 are in a vertical state; the two mounting plates 13 are rotatably provided with a cloth feeding roller 14 and a cloth discharging roller 15 which are used for guiding cloth on two opposite side walls, and the axial directions of the cloth feeding roller 14 and the cloth discharging roller 15 are parallel to each other; two opposite side walls of the two mounting plates 13 are rotatably connected with a horizontal rotating shaft 16, the rotating shaft 16 is positioned between the cloth feeding roller 14 and the cloth discharging roller 15, the embossing roller 11 is coaxially and fixedly sleeved on the rotating shaft 16, and the axial direction of the embossing roller 11 is parallel to the axial direction of the cloth feeding roller 14 and the axial direction of the cloth discharging roller 15.

Referring to fig. 2, two mounting plates 13 on one side of the embossing roll 11 close to the fabric feeding roll 14 are rotatably provided with paper winding rolls 17 on two opposite side walls, the axial direction of the paper winding rolls 17 is parallel to the axial direction of the embossing roll 11, and the paper winding rolls 17 are wound with transfer printing paper; two mounting plates 13 on one side of the printing roller 11 close to the cloth outlet roller 15 are rotatably provided with paper collecting rollers 18 relative to two side walls, the axial direction of the paper collecting rollers 18 is parallel to the axial direction of the printing roller 11, and the paper collecting rollers 18 roll the transfer printing paper after transfer printing patterns.

Referring to fig. 2, a pressure-bearing roller 12 is rotatably mounted on two opposite side walls of two mounting plates 13, the pressure-bearing roller 12 is positioned below an embossing roller 11, the axial direction of the pressure-bearing roller 12 is parallel to the axial direction of the embossing roller 11, and the pressure-bearing roller 12 and the embossing roller 11 are matched to extrude the transfer printing paper and the cloth; two mounting plates 13 are rotatably provided with cloth guide rollers 19 on two opposite side walls, the axial direction of the cloth guide rollers 19 is parallel to the axial direction of the printing roller 11, the cloth is guided out from the pressure bearing roller 12 and then bypasses the cloth guide rollers 19, and then the cloth is guided to the cloth outlet roller 15 through the guide rollers 41 and is guided out.

Referring to fig. 2, a cloth is guided from a feed roller 14 to pass around a printing roller 11, a transfer printing paper is guided from a winding roller 17 to pass around the printing roller 11, the printing roller 11 and a backing roller 12 are engaged to press the transfer printing paper and the cloth, a design and color pattern on the transfer printing paper is printed on the cloth, and the printed cloth is guided out by a discharge roller 15.

Referring to fig. 1 and 3, the blocking device 2 comprises a cloth winding roller 21, a winding roller 22 and a driving mechanism 23, the cloth winding roller 21 is rotatably connected to two opposite side walls of the two mounting plates 13 and is positioned on one side of the pressure-bearing roller 12 close to the cloth feeding roller 14, the axial direction of the cloth winding roller 21 is parallel to the axial direction of the pressure-bearing roller 12, and a blocking cloth 28 for blocking the roller surface of the pressure-bearing roller 12 is wound on the cloth winding roller 21; the driving mechanism 23 is arranged on the two mounting plates 13, the driving mechanism 23 comprises a driving motor 24, a rotating wheel 25 and a transmission belt 26, the driving motor 24 is fixedly connected to the side walls of the two mounting plates 13 on the opposite sides, and an output shaft of the driving motor 24 horizontally penetrates through the mounting plates 13 and is coaxially and fixedly connected with the embossing roll 11.

Referring to fig. 3, two rotating wheels 25 are provided and are respectively rotatably connected to two opposite side walls of the two mounting plates 13, a synchronizing wheel 27 is fixedly connected to the rotating shaft 16 at one end of the embossing roll 11 close to the driving motor 24, and a driving belt 26 is sleeved on the synchronizing wheel 27 and the rotating wheels 25; the winding roller 22 is detachably connected to the two rotating wheels 25 through the connecting assembly 3, and the diameter ratio of the winding roller 22 to the printing roller 11 is equal to that of the rotating wheels 25 to the synchronizing wheel 27.

Referring to fig. 3 and 4, the connecting assembly 3 includes an elastic plate 31 and a connecting spring 32, a plurality of inserting grooves 33 are formed in an array on the roll surfaces of two ends of the wind-up roll 22 close to the two rotating wheels 25, the elastic plate 31 is slidably mounted on the inserting grooves 33, one end of the connecting spring 32 is fixedly connected to the inner bottom wall of the inserting groove 33, and the other end of the connecting spring 32 is fixedly connected to one end surface of the elastic plate 31 facing the inner bottom wall of the inserting groove 33; a plurality of limiting holes 34 are formed in the rotating wheel 25 in an array mode, one end of the elastic plate 31 penetrates through the inserting groove 33 under the action of the connecting spring 32 to be in inserting fit with the limiting holes 34 and extend out of the limiting holes 34, and an inclined chamfer 35 is formed in the elastic plate 31.

Referring to fig. 2 and 4, the blocking cloth 28 is led out from the cloth winding roller 21 and bypasses the roller surface of the pressure bearing roller 12, the winding roller 22 winds the blocking cloth 28 which bypasses the pressure bearing roller 12, after winding is completed, the extrusion elastic plate 31 moves into the insertion groove 33, the winding roller 22 is taken down to process the blocking cloth 28 on the winding roller 22, after the processing of the blocking cloth 28 is completed, the extrusion elastic plate 31 moves into the insertion groove 33, two ends of the winding roller 22 are inserted into the rotating wheel 25, and the elastic plate 31 penetrates out of the limiting hole 34, so that the replacement of the winding roller 22 is completed

Referring to fig. 1 and 2, the two mounting plates 13 are provided with a cloth discharging device 4 for discharging cloth, the cloth discharging device 4 includes two guide rollers 41, a slider 42, a squeezing roller 43 and a moving assembly 44, the two guide rollers 41 are horizontally and rotatably connected to two opposite side walls of the two mounting plates 13, the two guide rollers 41 are located on one side of the cloth guide roller 19 close to the cloth discharging roller 15, and the axial direction of the two guide rollers is parallel to the axial direction of the wind-up roller 22.

Referring to fig. 1 and 2, two opposite side walls of the two mounting plates 13 are respectively provided with a vertical sliding groove 45, the two sliding blocks 42 are respectively installed on the two sliding grooves 45 in a sliding manner, two ends of the squeeze roll 43 are respectively installed on the two opposite side walls of the two sliding blocks 42 in a rotating manner, and the axial direction of the squeeze roll 43 is parallel to the axial direction of the guide roll 41.

Referring to fig. 2, the moving assembly 44 is disposed on the two mounting plates 13 and is used for driving the sliding block 42 to move, the moving assembly 44 includes a rotating screw rod 46 and a rotating motor 47, the rotating screw rod 46 is rotatably connected to the sliding groove 45 and is in a vertical state, the sliding block 42 is in threaded connection with the rotating screw rod 46, the rotating motor 47 is fixedly connected to the upper surface of the mounting plate 13, and the output shaft penetrates through the mounting plate 13 downwards and is fixedly connected with the rotating screw rod 46.

Referring to fig. 2, the rotating motor 47 is started to drive the rotating screw rod 46 to rotate, the rotating screw rod 46 rotates to drive the slide block 42 to move, and the slide block 42 moves to drive the extrusion roller 43 to cooperate with the guide roller 41 to extrude and fix the cloth.

Referring to fig. 1 and 5, the two mounting plates 13 are provided with the tensioning device 5 for tensioning the cloth on the cloth outlet roller 15, the tensioning device 5 comprises two limit hooks 51, a tensioning roller 52 and a traction mechanism 53, the traction mechanism 53 is arranged on the two mounting plates 13 and is used for driving the limit hooks 51 to move, the traction mechanism 53 comprises a rotating rod 54, two driven wheels 55 and a rotating assembly 56, the rotating rod 54 is rotatably mounted on two opposite side walls of the two mounting plates 13, the two driven wheels 55 are respectively and fixedly connected to two ends of the rotating rod 54 close to the two mounting plates 13, ropes 57 are wound on the two driven wheels 55, and the two limit hooks 51 are respectively and fixedly connected with the ropes 57 on the two driven wheels 55; two ends of the tension roller 52 are respectively connected on the two limit hooks 51 in a rotating way, and the axial direction of the tension roller 52 is parallel to the axial direction of the cloth outlet roller 15.

Referring to fig. 1 and 5, the rotating assembly 56 is disposed on the two mounting plates 13 and is used for driving the two driven wheels 55 to rotate, the rotating assembly 56 includes a rotating motor 561, a first chain wheel 562, a second chain wheel 563 and a transmission chain 564, the rotating motor 561 is fixedly connected to the upper surface of one mounting plate 13, the first chain wheel 562 is fixedly connected to an output shaft of the rotating motor 561, and the second chain wheel 563 is fixedly connected to the rotating rod 54 and is located between the driven wheel 55 close to the rotating motor 561 and the mounting plate 13 fixed to the rotating motor 561; the transmission chain 564 is sleeved on the first chain wheel 562 and the second chain wheel 563, and the transmission chain 564 is meshed with both the first chain wheel 562 and the second chain wheel 563.

Referring to fig. 5, rotating electrical machines 561 starts to drive first sprocket 562 and rotates, and first sprocket 562 rotates and drives drive chain 564 to rotate, and drive chain 564 rotates and drives second sprocket 563 to rotate, and second sprocket 563 rotates and drives dwang 54 to rotate, and dwang 54 rotates and drives two and follow driving wheel 55 to rotate, and two follow driving wheel 55 rotate and drive two ropes 57 and move, and two ropes 57 move and drive tensioning roller 52 and move, and tensioning roller 52 moves and carries out the tensioning to the cloth.

The working principle of the embodiment of the application is as follows:

the cloth is guided into and wound on the pressure-bearing roller 12 through the cloth feeding roller 14, the pattern on the transfer printing paper is impressed on the cloth by the embossing roller 11, the blocking cloth 28 is guided out from the cloth winding roller 21 and wound on the pressure-bearing roller 12 to block the roller surfaces of the pressure-bearing rollers 12 at the two ends of the cloth, the blocking cloth 28 is wound on the pressure-bearing roller 12 and then is transferred on the winding roller 22 to be wound, so that the probability that color paste on the embossing roller 11 is directly impressed on the pressure-bearing roller 12 is reduced, the adverse effect of the color paste on the roller surface of the pressure-bearing roller 12 on the cloth printing is reduced, and the printing effect of the cloth is maintained.

Move to guide roll 41 on through fabric guide roll 19 after the stamp, it extrudees the cloth to rotate motor 47 and start driving squeeze roll 43, the cloth after the extrusion is derived through cloth outlet roll 15, rotating electrical machines 561 starts to drive dwang 54 and rotates, dwang 54 rotates and drives tensioning roller 52 and remove and carry out the tensioning to the cloth of deriving, thereby accomplish the work of cloth play, the probability that the cloth caused the fold owing to becoming flexible in transportation process has been reduced, the roughness of cloth has been improved, the stamp effect of cloth has been kept.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A calico printing machine which characterized in that: the cloth printing machine comprises a rack (1), wherein a printing roller (11) used for printing cloth and a bearing roller (12) used for bearing the cloth are rotatably arranged on the rack (1), a blocking device (2) used for blocking the roller surface of the bearing roller (12) is arranged on the rack (1), and the blocking device (2) comprises a first blocking device and a second blocking device;

the cloth winding roller (21) is rotatably arranged on the rack (1), and blocking cloth (28) used for blocking the roller surface of the pressure bearing roller (12) is wound on the cloth winding roller (21);

the winding roller (22) is rotatably arranged on the rack (1) and is used for winding the blocking cloth (28) bypassing the pressure bearing roller (12);

the driving mechanism (23) is arranged on the rack (1) and is used for driving the winding roller (22) to rotate.

2. A printing machine as claimed in claim 1, wherein: the drive mechanism (23) comprises;

the driving motor (24), the said driving motor (24) is set up on framework (1) and the output shaft is connected with embossing roll (11);

the rotating wheel (25) is rotatably arranged on the rack (1), and the rotating wheel (25) is detachably connected with the winding roller (22) through a connecting assembly (3);

and the driving belt (26) is sleeved on the embossing roller (11) and the rotating wheel (25).

3. A printing machine as claimed in claim 2, wherein: the connection assembly (3) comprises;

the elastic plate (31), the elastic plate (31) is mounted on the wind-up roll (22) in a sliding manner;

connecting spring (32), connecting spring (32) set up on wind-up roll (22) and are connected with bullet board (31), bullet board (31) cooperate with rotating wheel (25) joint under connecting spring (32) effect.

4. A printing machine as claimed in claim 1, wherein: a cloth discharging device (4) for guiding out cloth is arranged on the rack (1), and the cloth discharging device (4) comprises;

the guide roller (41) is rotatably arranged on the rack (1) and used for guiding out cloth;

the sliding block (42), the sliding block (42) is arranged on the frame (1) in a sliding manner;

the extrusion roller (43) is rotatably arranged on the sliding block (42) and is matched with the guide roller (41) to extrude the cloth;

the moving assembly (44) is arranged on the machine frame (1) and is used for driving the sliding block (42) to move.

5. A printing machine according to claim 4, characterized in that: the moving assembly (44) comprises;

the rotary screw rod (46), the rotary screw rod (46) is rotatably connected to the rack (1) and is in threaded connection with the sliding block (42);

the rotating motor (47), the rotating motor (47) is arranged on the rack (1), and an output shaft of the rotating motor is connected with the rotating screw rod (46).

6. A printing machine as claimed in claim 1, wherein: the machine frame (1) is provided with a tensioning device (5) for tensioning the cloth on the cloth outlet roller (15), and the tensioning device (5) comprises;

the two limiting hooks (51), the two limiting hooks (51) are arranged on the rack (1) in a sliding manner;

the tensioning rollers (52) are rotatably arranged on the two limiting hooks (51) and used for tensioning the cloth;

the traction mechanism (53) is arranged on the rack (1) and is used for driving the limiting hook (51) to move.

7. A printing machine as claimed in claim 6, wherein: the traction mechanism (53) comprises;

the rotating rod (54), the rotating rod (54) is rotatably connected to the rack (1);

the two driven wheels (55), the two driven wheels (55) are arranged on the rotating rod (54) and are wound with ropes (57) connected with the limiting hooks (51);

the rotating assembly (56), the rotating assembly (56) is arranged on the frame (1) and is used for driving the rotating shaft (16) to rotate.

8. A printing machine as claimed in claim 7, wherein: the rotating assembly (56) includes;

a rotating motor (561), the rotating motor (561) being disposed on the frame (1);

the first chain wheel (562) is rotationally arranged on the rack (1) and is connected with an output shaft of the rotating motor (561);

a second sprocket (563), said second sprocket (563) being disposed on the rotating shaft (16);

and the transmission chain (564) is sleeved on the first chain wheel (562) and the second chain wheel (563) and is meshed with the first chain wheel (562) and the second chain wheel (563).

9. A printing machine as claimed in claim 3, wherein: the elastic plate (31) is provided with a chamfer (35).