CN209775809U

CN209775809U - heat transfer printing assembly

Info

Publication number: CN209775809U
Application number: CN201920103713.9U
Authority: CN
Inventors: 蔡和平; 周洪军
Original assignee: Wuxi Ding Chang Packing Technology Co Ltd
Current assignee: Wuxi Ding Chang Packing Technology Co Ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2019-12-13
Anticipated expiration: 2029-01-22

Abstract

The utility model discloses a heat-transfer seal subassembly, include along marking the area direction of delivery set gradually and link up the complex and supply mark subassembly, pull roller assembly, hot pressing unit spare and receive the area subassembly, pull roller assembly spare and receive the area subassembly all to be connected with driving motor synchronous drive. Through the design, the traction roller assembly and the belt collecting assembly are in synchronous driving connection through the driving motor, synchronous output and belt collecting speed are obtained, operation is stable, and the whole mechanism is simple in structure.

Description

Heat transfer printing assembly

Technical Field

The utility model relates to a heat-transfer seal subassembly.

Background

In the operation of the existing packaging production line, some labels need to be transferred from a label tape to a product in a heat transfer mode, a speed difference exists between the existing label supplying roller and the existing label receiving tape device during operation, a complex mechanism has to be arranged between the label supplying roller and the existing label receiving tape device for buffer adjustment, so that the overall structure is complex, and the operation is unstable; the prior art urgently needs a heat transfer printing component which is simple in mechanism and stable in operation.

SUMMERY OF THE UTILITY MODEL

an object of the utility model is to overcome the defect that exists among the prior art, provide a mechanism simply, the stable heat-transfer seal subassembly of operation.

in order to achieve the purpose, the technical scheme of the utility model a heat transfer printing subassembly is provided, include along marking the area direction of delivery set gradually and link up the complex and supply mark subassembly, pull roller subassembly, hot pressing subassembly and receive the area subassembly, pull roller subassembly and receive the area subassembly all to be connected with driving motor synchronous drive.

through the design, the traction roller assembly and the belt collecting assembly are in synchronous driving connection through the driving motor, synchronous output and belt collecting speed are obtained, operation is stable, and the whole mechanism is simple in structure.

Preferably, the belt winding assembly comprises a belt winding shaft, and a belt winding adjusting nut, a belt winding spring, a friction assembly, an end cover connecting assembly and a belt winding synchronous pulley which are sequentially sleeved from front to back along the belt winding shaft; the end cover connecting assembly is fixedly connected with the seat plate, and a tape winding shaft hole for accommodating a tape winding shaft to pass through is formed in the seat plate; the belt winding shaft is rotatably connected with the end cover connecting assembly through the belt winding bearing;

The belt-retracting synchronous belt wheel is in driving connection with a driving motor;

The friction assembly comprises a front friction ring, a front friction washer, a rear friction washer and a rear friction ring which are sequentially sleeved from front to back along a take-up shaft, and a rear limiting convex ring in limiting fit with the rear end face of the rear friction ring is fixed on the take-up shaft; a belt take-up outer sleeve is sleeved on the belt take-up shaft between the front friction washer and the rear friction washer and is clamped between the front friction washer and the rear friction washer; the belt-retracting spring is compressed between the belt-retracting adjusting nut and the front friction ring, and the belt-retracting adjusting nut is connected with the belt-retracting shaft through threads;

the belt winding device is characterized in that pin grooves are formed in the rear friction ring and the front friction ring respectively, the pin grooves are through grooves formed in the axial direction of the belt winding shaft, belt winding pins matched with the pin grooves are fixed on the belt winding shaft matched with the rear friction ring and the front friction ring, and the belt winding pins are perpendicular to the axial direction of the belt winding shaft.

Through the design, the tape collecting shaft is rotatably connected to the base plate, the outer parts of the front friction ring and the rear friction ring are limited by the rear limiting convex ring at the rear end, the tape collecting spring at the front end is limited, the tape collecting outer sleeve is clamped tightly by the front friction washer and the rear friction washer, and when the tape collecting shaft rotates, the tape collecting outer sleeve is driven to synchronously rotate by static friction force to collect the label tape;

Because the traction roller assembly and the tape collecting assembly are synchronously driven by the driving motor, the rotation angular speeds of a traction roller shaft and a tape collecting shaft of the traction roller assembly are the same, the standard tape is thicker and thicker on the tape collecting shaft along with the winding of the tape collecting shaft, the winding linear speed of the tape collecting shaft is gradually greater than the discharging linear speed of the traction roller shaft, and the standard tape can be torn if the linear speed difference between the traction roller assembly and the tape collecting assembly cannot be buffered;

When the winding linear velocity of the tape collecting shaft is greater than the discharging linear velocity of the traction roller shaft, the pulling force of the label tape to the tape collecting outer sleeve is gradually increased and is greater than the static friction force between the tape collecting outer sleeve and the front friction washer and between the tape collecting outer sleeve and the rear friction washer, the tape collecting outer sleeve is driven to rotate relative to the tape collecting shaft, the rotating speed of the tape collecting outer sleeve is instantaneously lower than that of the tape collecting shaft, the pulling force of the label tape to the tape collecting outer sleeve is reduced, and the tape collecting outer sleeve restores the synchronous rotation with the tape collecting shaft through the static friction force;

The belt take-up jacket has two working modes, the first mode is synchronous rotation with the belt take-up shaft through static friction force; and secondly, the label tape is decelerated and rotated relative to the tape collecting shaft through the label tape pulling force, the two modes depend on the relation between the static friction force and the pulling force, the label tape can be operated in the second mode under the condition that the pulling force is greater than the static friction force, and the label tape can be operated in the first mode under the condition that the pulling force is equal to or less than the static friction force.

therefore, the speed difference of the label tape in the operation process can be buffered through the ingenious design of the tape collecting assembly, a plurality of buffer mechanism parts are omitted, and the structure is simplified.

The pin groove is formed, the rear friction ring and the front friction ring can be driven to synchronously rotate through the belt collecting pin, and the compression degree of the belt collecting spring can be adjusted through the belt collecting adjusting nut, so that the static friction force is adjusted.

Preferably, a belt take-up centering sleeve is arranged between the belt take-up outer sleeve and the belt take-up shaft, and the belt take-up centering sleeve is a copper sleeve. By the design, the coaxiality of the belt winding outer sleeve and the belt winding shaft can be ensured when the belt winding outer sleeve rotates relative to the belt winding shaft, and meanwhile, the low rotation resistance is reduced and the wear resistance is improved; the centering sleeve is sleeved on the belt take-up shaft, can slide along the belt take-up shaft and can also rotate around the axial direction, and when the belt take-up outer sleeve rotates relative to the belt take-up shaft, the centering sleeve passively rotates to reduce friction.

Preferably, the end cap connecting assembly comprises a front end cap and a rear end cap, and the front end cap and the rear end cap are arranged on two sides of the seat plate and are connected through end cap screws. The design can be fixed with the seat plate through the front end cover and the rear end cover.

preferably, the rear part of the belt retracting coat is provided with a belt retracting tray, and the belt retracting tray is perpendicular to the axis of the belt retracting coat; the paper clamping fork is arranged on the tape collecting outer sleeve and is U-shaped, and paper tape clamping grooves matched and clamped with the two fork legs of the paper clamping fork are formed in the two sides of the outer wall of the tape collecting outer sleeve. By the design, the end part of the label tape can be fixed in the paper tape clamping groove through the elasticity of the paper clamping fork at the initial winding stage.

Preferably, two end surfaces of the belt retracting jacket are inwards recessed to form belt retracting annular concave tables, and the front friction gasket and the rear friction gasket are arranged in the belt retracting annular concave tables and are in contact friction with the surfaces of the belt retracting annular concave tables in a matched mode. According to the design, the front friction washer and the rear friction washer are both arranged in the belt-retracting annular concave table, and the outer edges of the front friction washer and the rear friction washer can be limited during sliding friction; and the appearance is comparatively clean and tidy.

preferably, the traction roller assembly comprises a traction roller shaft, the traction roller shaft is rotatably connected with the seat plate through a traction bearing, a traction synchronous pulley is connected to the rear end of the traction roller shaft, and the traction synchronous pulley, the belt winding synchronous pulley and the output end of the driving motor are in driving connection through a synchronous belt. By the design, the traction synchronous pulley and the belt take-up synchronous pulley can synchronously rotate.

Preferably, the front part of the traction roller shaft is provided with a traction outer rubber roller, the seat plate is also provided with a compression roller which is matched and pressed with the traction outer rubber roller, and the compression roller is rotatably connected with the seat plate through a swing arm. The design is convenient for compressing the label tape through the compression roller and the traction outer rubber roller, and is convenient for traction.

preferably, the label supply assembly comprises a label supply disc shaft, a front label supply limiting baffle ring, a rear label supply limiting baffle ring and a label supply spring, wherein the front label supply limiting baffle ring, the rear label supply limiting baffle ring and the label supply spring are sequentially sleeved along the label supply disc shaft from front to back; the label supply spring is tightly pressed between the label supply limiting rear baffle ring and the label supply spring rear limiting convex ring; a label supplying disc sleeve is further sleeved on the label supplying disc shaft between the label supplying limiting front retaining ring and the label supplying limiting rear retaining ring, and the label supplying disc sleeve is clamped between the label supplying limiting front retaining ring and the label supplying limiting rear retaining ring;

the front end part of the label supplying shaft is provided with a label supplying front baffle, the label supplying front baffle is fixed with the front end part of the label supplying shaft through a baffle screw, and the label supplying front baffle is in matched contact with and limited by a label supplying limiting front baffle ring.

Through such design, supply the mark dish cover to press from both sides tightly and keep off before supplying mark spacing, supply mark spacing back to keep off between the ring, the mark tape roll clamp is fixed on supplying the mark dish cover, and when the mark tape pulling supplied mark dish cover to rotate, need overcome and supply mark dish cover and supply mark spacing front fender ring and supply mark spacing back to keep off the volume frictional force between the ring for mark tape output has certain damping force, carries comparatively steadily.

preferably, the rear end of the label supplying disc sleeve is provided with a label supplying rear concave platform for accommodating a label supplying spring; a mark supply centering sleeve is also arranged between the mark supply disc sleeve and the mark supply disc shaft; the rear end of the label supplying disc shaft is fixedly connected with the seat plate. The design of supplying mark back concave station like this, the outward appearance is succinct, supplies mark to right the cover and guarantees to supply mark dish cover and supply to rotate the axiality between the mark dish axle.

Preferably, a marker supplying tray support is fixed at the rear part of the marker supplying tray sleeve, a marker end cover is sleeved at the front part of the marker supplying tray sleeve, a sealing rubber ring is arranged between the inner edge of the marker end cover and the marker supplying tray sleeve, and a rubber ring groove for accommodating the sealing rubber ring is formed in the inner edge of the marker end cover; the label end cover is matched with the label tray to clamp the label roll. By the design, the dial end cover can keep certain sliding friction force with the dial sleeve through the sealing rubber ring, so that the position can be conveniently adjusted.

Preferably, the hot-pressing assembly comprises a cross beam which moves up and down, the lower part of the cross beam is connected with a hot-pressing upper plate assembly, and the lower part of the hot-pressing upper plate assembly is provided with a hot-pressing pillow block which is matched with the hot-pressing upper plate assembly for hot pressing; a cross beam driving cylinder is fixed on the seat plate, the cross beam driving cylinder is vertically arranged, and the driving end part of the cross beam driving cylinder is in driving connection with the cross beam through a joint;

The two sides of the beam driving cylinder are also provided with beam guide rods in parallel, the beam guide rods are in sliding fit with a beam guide frame, and the beam guide frame is fixed on the seat plate; the bottom of the beam guide rod is connected with the beam.

according to the design, the cross beam, the hot-pressing upper plate assembly and the hot-pressing pillow block are driven by the cross beam driving cylinder to be matched for hot pressing; the beam guide rod and the beam guide frame play a role in guiding.

Preferably, the middle part of the beam is provided with a joint connecting hole, the bottom of the joint is provided with a beam connecting rod, the beam connecting rod penetrates through the joint connecting hole to be connected with the joint check ring, the beam connecting rod is further sleeved with a hot-pressing head spring, a hot-pressing head spring limiting concave table is arranged in the joint connecting hole, and the hot-pressing head spring is compressed between the hot-pressing head spring limiting concave table and the joint.

through the design of hot pressing head spring, when hot pressing upper plate subassembly and hot pressing pillow block cooperation hot pressing, joint connecting hole outer fringe can promote hot pressing head spring along the further compression of crossbeam connecting rod, plays the cushioning effect, so that, the product of taking the hot pressing no matter be stereoplasm or soft can the hot pressing, especially the product of stereoplasm avoids hot pressing upper plate subassembly and hot pressing pillow block rigid contact, causes the damage.

preferably, the hot-pressing upper plate assembly is connected with the cross beam through a connecting plate, and the hot-pressing upper plate assembly comprises a heat insulation plate, a hot-pressing head cover and a hot-pressing head which are sequentially arranged from top to bottom. Such a design is an optimization of the solution.

Preferably, a feeding guide roller and a discharging guide roller are respectively arranged on the feeding side and the discharging side of the hot-pressing upper plate assembly, the feeding guide roller and the discharging guide roller are rotatably connected to a belt tensioning plate, two sides of the belt tensioning plate are connected with a cross beam through belt tensioning connecting rods, each belt tensioning connecting rod comprises a belt tensioning chuck at the upper end and a belt tensioning slide rod integrally arranged with the belt tensioning chuck, a belt tensioning slide rod connecting block connected with the belt tensioning slide rod in a matched manner is arranged on the belt tensioning plate, and a belt tensioning slide rod through hole in sliding fit with the belt tensioning slide rod is arranged on the cross beam; the tension belt connecting rod penetrates through the tension belt sliding rod through hole from top to bottom, the bottom of the tension belt connecting rod is fixed with the tension belt sliding rod connecting block, and the tension belt clamping head is matched with the upper edge of the tension belt sliding rod through hole for limiting; the tension belt slider is further sleeved with a tension belt spring, and the tension belt spring is tightly pressed between the lower edge of the tension belt slide rod through hole and the tension belt slide rod connecting block.

such design, the label area on feeding guide roll and the ejection of compact guide roll changes to the pressure of two roll bodys, and especially when pressure grow, pressure can conduct to stretch out the band board on, stretches out the band board through the cushioning effect of stretching out the band spring, stretches out the band board and can force to stretch out the band connecting rod upwards operation and stretch out the band slide bar through-hole cooperation and slide, avoids destroying the label area.

preferably, an upper strip storage roller is arranged above the discharge guide roller and is connected with a strip plate through a support rod; the bottom of the supporting rod is fixed with a strip stretching plate, and the strip stretching material storage upper roller is rotatably connected with the upper end of the supporting rod; and a belt tensioning material storage lower roller is further arranged between the belt tensioning material storage upper roller and the discharging guide roller and is rotatably connected with the seat plate.

Preferably, the label tape is output from the traction roller assembly, sequentially passes through the feeding guide roller, the discharging guide roller, the upper tape-tensioning material-storing roller and the lower tape-tensioning material-storing roller and then is output to the tape-collecting assembly.

through the design, when the hot-pressing upper plate assembly moves downwards, a section of supplement section needs to be added to the label tapes on two sides of the hot-pressing upper plate assembly, and at the moment, the upper roller with the right amount of tape stock moves downwards to release the label tapes between the upper roller and the lower roller with the tape stock to serve as the supplement section, so that the hot pressing can be normally carried out.

Preferably, the seat plate is provided with a belt stretching and material storing upper roller moving hole for accommodating the belt stretching and material storing upper roller to move up and down. Due to the design, the upper roller for storing the stretched strip can move up and down conveniently.

Preferably, transition guide rollers are arranged between the label supplying assembly and the pull roller assembly, between the pull roller assembly and the feeding guide roller, and between the tension belt storing lower roller and the belt collecting assembly, and the transition guide rollers are rotatably connected to the seat plate. The design is convenient for the conveying of the label tape.

Preferably, a measuring and marking assembly is arranged between the traction roller assembly and the hot-pressing assembly. By the design, whether the label tape runs in place or not can be detected through the photoelectric sensor, and control is facilitated.

Preferably, the hot-pressing pillow block is fixed on the base, the seat plate is connected with the base through a connecting arm, and a laser marking assembly is arranged on the connecting arm. By the aid of the design, the position of a product can be located during operation.

The utility model has the advantages and the beneficial effects that: through the design, the traction roller assembly and the belt collecting assembly are in synchronous driving connection through the driving motor, synchronous output and belt collecting speed are obtained, operation is stable, and the whole mechanism is simple in structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

3 FIG. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of the structure at C in FIG. 2;

FIG. 5 is an enlarged view of the structure at D in FIG. 2;

FIG. 6 is an enlarged view of the structure at E in FIG. 2;

Fig. 7 is a schematic structural view (rear view) of the present invention;

Fig. 8 is a schematic structural view (perspective view) of the present invention;

FIG. 9 is a schematic structural view (a perspective view, with the protection plate omitted) of the present invention;

FIG. 10 is an enlarged view of the structure at F in FIG. 9;

FIG. 11 is a schematic view of a belt retracting assembly;

FIG. 12 is a schematic view of the belt take-up assembly (omitting the paper clamping fork);

FIG. 13 is a schematic view (front view) of the engagement structure of the take-up shaft and the friction member;

FIG. 14 is a schematic view of the belt take-up shaft and friction assembly engagement configuration (rear view);

FIG. 15 is a schematic view of a belt-retracting coat configuration (front view);

FIG. 16 is a schematic view of a belt-retracting jacket configuration (rear view);

FIG. 17 is a schematic view (front view) of a structure of the belt retracting pin and the pin groove;

FIG. 18 is a schematic view of the structure of the belt retracting pin and the pin groove (rear view);

FIG. 19 is a schematic structural view of a label supply assembly;

FIG. 20 is a schematic view of the fitting structure of the label supplying plate shaft with the front stop ring for label supplying position limitation and the rear stop ring for label supplying position limitation;

FIG. 21 is a schematic view of a reticle sleeve configuration (rear view);

FIG. 22 is a schematic drawing of the pull roll assembly.

in the figure: 1. marking; 2. a label supply assembly; 3. a pull roll assembly; 4. a hot pressing assembly; 5. a belt take-up assembly; 6. a belt-retracting adjusting nut; 7. a belt retracting spring; 8. a belt-retracting synchronous belt pulley; 9. a belt retracting bearing; 10. a drive motor; 11. a front friction ring; 12. a front friction washer; 13. a rear friction washer; 14. a rear friction ring; 15. a rear limit convex ring; 16. taking up the outer sleeve; 17. a pin slot; 18. collecting the belt pin; 19. a belt retracting and righting sleeve; 20. a front end cover; 21. a rear end cap; 22. an end cap screw; 23. a tape collecting tray; 24. a paper clamping fork; 25. a paper tape clamping groove; 26. a belt retracting annular concave platform; 27. a traction roller shaft; 29. a traction synchronous pulley; 30. drawing the outer rubber roller; 31. a compression roller; 32. swinging arms; 33. a seat plate; 34. a front baffle ring for standard limit; 35. a back stop ring for standard limit; 36. a label supply spring; 37. a rear limit convex ring of the standard spring is provided; 38. a label supplying disc sleeve; 39. a front baffle plate for the label; 40. a catch screw; 41. a back concave platform for marking; 42. a mark supplying and centering sleeve; 43. a supply target tray; 44. a label end cover; 45. sealing the rubber ring; 46. a rubber ring groove; 47. a cross beam; 48. hot pressing the pillow block; 49. the cross beam drives the cylinder; 50. a beam guide bar; 51. a beam guide frame; 52. a beam connecting rod; 53. a joint; 54. a joint connection hole; 55. a connector retainer ring; 56. a hot-pressing head spring; 57. a hot pressing head spring limiting concave platform; 58. a connecting plate; 59. a heat insulation plate; 60. a hot-press head cover; 61. a hot-pressing head; 62. a feed guide roll; 63. a discharge guide roller; 64. a band stretching plate; 65. a connecting rod is stretched; 66. tensioning a belt chuck; 67. stretching a belt sliding rod; 68. a connecting block with a sliding rod; 69. stretching a through hole with a sliding rod; 70. tensioning a belt spring; 71. a strut; 73. stretching a belt to store material and rolling the belt; 74. stretching a lower roller for storing materials; 75. stretching a belt to store the material and moving the hole by the upper roller; 76. a transition guide roll; 77. a measuring and marking component; 78. a base; 79. a connecting arm; 80. a laser marking assembly; 81. a protection plate; 82. a guard plate connecting rod; 83. a take-up shaft; 84. for the dial shaft.

Detailed Description

the following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 22:

example 1

The utility model provides a heat-transfer seal subassembly, includes along 1 direction of delivery in proper order of marking the area and sets gradually and link up the complex and supply mark subassembly 2, carry over pinch rolls subassembly 3, hot pressing subassembly 4 and receive area subassembly 5, carry over pinch rolls subassembly 3 and receive area subassembly 5 all with driving motor 10 synchronous drive be connected.

The belt collecting component 5 comprises a belt collecting shaft 83, and a belt collecting adjusting nut 6, a belt collecting spring 7, a friction component, an end cover connecting component and a belt collecting synchronous pulley 8 which are sequentially sleeved from front to back along the belt collecting shaft 83; the end cover connecting assembly is fixedly connected with the seat plate 33, and a belt winding shaft 83 hole for accommodating the belt winding shaft 83 to pass through is formed in the seat plate 33; the end cover connecting assembly is internally connected with a tape collecting bearing 9, and the tape collecting shaft 83 is rotatably connected with the end cover connecting assembly through the tape collecting bearing 9;

The belt-winding synchronous belt wheel 8 is in driving connection with a driving motor 10;

The friction assembly comprises a front friction ring 11, a front friction washer 12, a rear friction washer 13 and a rear friction ring 14 which are sequentially sleeved from front to back along a belt winding shaft 83, and a rear limiting convex ring 15 which is in limiting fit with the rear end face of the rear friction ring 14 is fixed on the belt winding shaft 83; a belt retracting jacket 16 is sleeved on the belt retracting shaft 83 between the front friction washer 12 and the rear friction washer 13, and the belt retracting jacket 16 is clamped between the front friction washer 12 and the rear friction washer 13; the belt retracting spring 7 is compressed between the belt retracting adjusting nut 6 and the front friction ring 11, and the belt retracting adjusting nut 6 is in threaded connection with the belt retracting shaft 83;

the rear friction ring 14 and the front friction ring 11 are both provided with pin grooves 17, the pin grooves 17 are through grooves formed along the axial direction of the take-up shaft 83, the take-up shaft 83 matched with the rear friction ring 14 and the front friction ring 11 is fixed with a take-up pin 18 matched with the pin grooves 17, and the take-up pin 18 is perpendicular to the axial direction of the take-up shaft 83.

A belt-retracting and righting sleeve 19 is arranged between the belt-retracting outer sleeve 16 and the belt-retracting shaft 83, and the belt-retracting and righting sleeve 19 is a copper sleeve. By adopting the design, the coaxiality between the belt take-up outer sleeve 16 and the belt take-up shaft 83 when the belt take-up outer sleeve rotates relative to the belt take-up shaft 83 can be ensured, and meanwhile, the low rotation resistance is reduced and the wear resistance is improved; the belt-collecting and centering sleeve 19 is sleeved on the belt-collecting shaft 83 and can slide along the belt-collecting shaft 83 and also can rotate around the axial direction, and when the belt-collecting outer sleeve 16 rotates relative to the belt-collecting shaft, the belt-collecting and centering sleeve 19 passively rotates to reduce friction.

The end cover connecting assembly comprises a front end cover 20 and a rear end cover 21, wherein the front end cover 20 and the rear end cover 21 are arranged on two sides of a seat plate 33 and are connected through end cover screws 22.

a belt retracting tray 23 is arranged at the rear part of the belt retracting jacket 16, and the belt retracting tray 23 is perpendicular to the axis of the belt retracting jacket 16; the paper clamping fork 24 is arranged on the tape collecting outer sleeve 16, the paper clamping fork 24 is U-shaped, and paper tape clamping grooves 25 matched and clamped with two fork legs of the paper clamping fork 24 are formed in two sides of the outer wall of the tape collecting outer sleeve 16.

the two end faces of the belt-retracting outer sleeve 16 are inwards recessed to form a belt-retracting annular concave table 26, and the front friction gasket 12 and the rear friction gasket 13 are arranged in the belt-retracting annular concave table 26 and are in surface fit contact friction with the belt-retracting annular concave table 26. The front friction washer 12 and the rear friction washer 13 are both arranged in the belt-retracting annular concave table 26, and the outer edges of the front friction washer 12 and the rear friction washer 13 can be limited during sliding friction; and the appearance is comparatively clean and tidy.

When the label tape is used, in the initial winding stage, the end part of the label tape 1 is fixed in the paper tape clamping groove 25 through the elasticity of the paper clamping fork 24;

The belt take-up shaft 83 is sequentially provided with a belt take-up adjusting nut 6, a belt take-up spring 7, a front friction ring 11, a front friction washer 12, a belt take-up centering sleeve 19 (a belt take-up jacket 16 is sleeved outside the belt take-up centering sleeve 19), a rear friction washer 13, a rear friction ring 14, a rear limiting convex ring 15, an end cover connecting assembly and a belt take-up synchronous pulley 8 from front to rear;

The end cover connecting assembly is fixed with the seat plate 33, a tape collecting bearing 9 is connected in the end cover connecting assembly, and the tape collecting shaft 83 is rotatably connected with the end cover connecting assembly through the tape collecting bearing 9;

the front friction ring 11, the front friction washer 12, the rear friction washer 13 and the rear friction ring 14 are limited between the tape retracting spring 7 and the rear limiting convex ring 15, the tape retracting jacket 16 is clamped between the front friction washer 12 and the rear friction washer 13, and the label tape 1 is wound on the outer wall of the tape retracting jacket 16; the front friction ring 11 and the rear friction ring 14 are matched through a belt winding pin 18 and a pin groove 17, and when the belt winding shaft 83 rotates, the front friction ring 11 and the rear friction ring 14 synchronously rotate;

The front friction ring 11 extrudes the front friction washer 12 under the pressure action of the belt retracting spring 7, the front friction washer 12 extrudes the front end of the belt retracting jacket 16, similarly, the rear friction ring 14 extrudes the rear friction washer 13 under the pressure action of the belt retracting spring 7, the rear friction washer 13 extrudes the rear end of the belt retracting jacket 16, and the belt retracting jacket 16 synchronously rotates when the belt retracting shaft 83 rotates by virtue of the static friction force between the belt retracting jacket 16 and the front friction washer 12 as well as between the belt retracting jacket 13;

When the winding linear velocity of the take-up shaft 83 is greater than the discharging linear velocity of the traction roller shaft 27 (or the roller shaft of the previous process matched with the take-up shaft 83), the pulling force of the label tape 1 on the take-up outer sleeve 16 is gradually increased and is greater than the static friction force between the take-up outer sleeve 16 and the front friction washer 12 and the rear friction washer 13, the take-up outer sleeve 16 is driven to rotate relative to the take-up shaft 83, the rotating speed of the take-up outer sleeve 16 is instantaneously lower than that of the take-up shaft 83, the pulling force of the label tape 1 on the take-up outer sleeve 16 is reduced, and the take-up outer sleeve 16 restores to synchronously rotate with the take-up shaft 83 through the static friction;

The belt retracting jacket 16 has two working modes, the first mode is synchronous rotation with the belt retracting shaft 83 through static friction force; secondly, the pulling force of the target tape 1 is decelerated and rotated relative to the tape collecting shaft 83, the two modes depend on the relation between the static friction force and the pulling force, the target tape runs in the second mode when the pulling force is larger than the static friction force, and the target tape runs in the first mode when the pulling force is equal to or smaller than the static friction force.

Therefore, the speed difference of the label tape 1 in the operation process can be buffered through the ingenious design of the tape collecting component 5, a plurality of buffer mechanism parts are omitted, and the structure is simplified.

In order to adjust the static friction force, the pin groove 17 is a through groove formed along the axial direction of the take-up shaft 83, when the take-up adjusting nut 6 rotates, the take-up spring 7 can be pressed or loosened, the front friction ring 11 and the rear friction ring 14 can also slide along the take-up shaft 83, but the cooperation of the take-up pin 18 and the pin groove 17 cannot be influenced.

Example 2

To the further optimization of embodiment 1, the pulling roll assembly 3 includes a pulling roll shaft 27, the pulling roll shaft 27 is rotatably connected with the seat plate 33 through a pulling bearing, a pulling synchronous pulley 29 is connected to the rear end of the pulling roll shaft 27, and the pulling synchronous pulley 29, the belt-winding synchronous pulley 8 and the output end of the driving motor 10 are connected through a synchronous belt drive.

The front part of the traction roller shaft 27 is provided with a traction outer rubber roller 30, the seat plate 33 is further provided with a compression roller 31 which is matched and pressed with the traction outer rubber roller 30, and the compression roller 31 is rotatably connected with the seat plate 33 through a swing arm 32. The compression roller 31 is positioned on the feeding side of the traction outer rubber roller 30 (the left side of the traction outer rubber roller 30 is lower than the highest point of the traction outer rubber roller 30), and the label tape 1 can be pressed on the surface of the traction outer rubber roller 30 through the driving of the label tape 1.

The label supplying assembly 2 comprises a label supplying disc shaft 84, a front label supplying limiting baffle ring 34, a rear label supplying limiting baffle ring 35 and a label supplying spring 36, wherein the front label supplying limiting baffle ring, the rear label supplying limiting baffle ring and the label supplying spring 36 are sequentially sleeved along the label supplying disc shaft 84 from front to back, and a rear label supplying spring limiting convex ring 37 in matched contact with the label supplying spring 36 is arranged at the rear end part of the label supplying disc shaft 84; the label supply spring 36 is tightly pressed between the label supply limit rear baffle ring 35 and the label supply spring rear limit convex ring 37; a label supplying disc sleeve 38 is further sleeved on the label supplying disc shaft 84 between the label supplying limiting front baffle ring 34 and the label supplying limiting rear baffle ring 35, and the label supplying disc sleeve 38 is clamped between the label supplying limiting front baffle ring 34 and the label supplying limiting rear baffle ring 35;

The front end part of the label supplying disk shaft 84 is provided with a label supplying front baffle 39, the label supplying front baffle 39 is fixed with the front end part of the label supplying disk shaft 84 through a baffle screw 40, and the label supplying front baffle 39 is in matched contact with the label supplying limiting front baffle ring 34 for limiting.

A mark supply rear concave platform 41 for accommodating a mark supply spring 36 is arranged at the rear end of the mark supply disc sleeve 38; a mark supply centering sleeve 42 is also arranged between the mark supply disc sleeve 38 and the mark supply disc shaft 84; the rear end of the scale supplying shaft 84 is fixedly connected with the seat plate 33.

A scale supplying tray support 43 is fixed at the rear part of the scale supplying sleeve 38, a scale end cover 44 is sleeved at the front part of the scale supplying sleeve 38, a sealing rubber ring 45 is arranged between the inner edge of the scale end cover 44 and the scale supplying sleeve 38, and a rubber ring groove 46 for accommodating the sealing rubber ring 45 is formed in the inner edge of the scale end cover 44; the target end cover 44 cooperates with the target tray 43 to clamp the tape 1 roll.

When using, index mark 1 is fixed between index plate end cover 44 and confession index plate tray 43, along with confession index plate cover 38 synchronous rotation, owing to supply index plate cover 38 to press from both sides tightly in confession mark spacing preceding fender ring 34, supply between the spacing back fender ring 35 of mark, when supplying index plate cover 38 to rotate under the pulling of index mark 1, have certain damping force, has also guaranteed the stability of the ejection of compact of index mark 1 like this, should not make index mark 1 break away from for supplying index plate cover 38 rotation inertia. The label tape 1 is guided by a transition roller after being output from the label supplying tray sleeve 38, and then is compressed between the traction outer rubber covered roller 30 and the compression roller 31, the traction outer rubber covered roller 30 is fixed with the traction roller shaft 27, the rear end part of the traction roller shaft 27 is connected with the traction synchronous pulley 29, the traction synchronous pulley 29 and the tape receiving synchronous pulley 8 are in drive connection with the output end of the driving motor 10 through a synchronous belt, the rotation angular speeds of the traction synchronous pulley 29 and the tape receiving synchronous pulley 8 are synchronous, the label tape 1 becomes thicker and thicker on the tape receiving shaft 83 along with the winding of the tape receiving shaft 83, the winding linear speed of the tape receiving shaft 83 is gradually larger than the discharging linear speed of the traction roller shaft 27, and the label tape 1 can be torn if the linear speeds of the traction synchronous pulley 29 and the tape receiving synchronous pulley 8 are not buffered.

embodiment 3, further optimizing embodiment 2, the hot pressing assembly 4 includes a beam 47 moving up and down, a hot pressing upper plate assembly is connected to the lower portion of the beam 47, and a hot pressing pillow block 48 which is matched with the hot pressing upper plate assembly for hot pressing is arranged on the lower portion of the hot pressing upper plate assembly; a beam driving cylinder 49 is fixed on the seat plate 33, the beam driving cylinder 49 is vertically arranged, and the driving end part of the beam driving cylinder 49 is in driving connection with the beam 47 through a joint 53;

The two sides of the beam driving cylinder 49 are also provided with beam guide rods 50 in parallel, the beam guide rods 50 are in sliding fit with a beam guide frame 51, and the beam guide frame 51 is fixed on the seat plate 33; the bottom of the beam guide rod 50 is connected with the beam 47.

The middle part of the cross beam 47 is provided with a joint connecting hole 54, the bottom of the joint 53 is provided with a cross beam connecting rod 52, the cross beam connecting rod 52 penetrates through the joint connecting hole 54 to be connected with a joint retainer ring 55, the cross beam connecting rod 52 is further sleeved with a hot pressing head spring 56, a hot pressing head spring limiting concave table 57 is arranged in the joint connecting hole 54, and the hot pressing head spring 56 is compressed between the hot pressing head spring limiting concave table 57 and the joint 53.

the hot-pressing upper plate assembly is connected with the cross beam 47 through a connecting plate 58, and comprises a heat insulation plate 59, a hot-pressing head cover 60 and a hot-pressing head 61 which are sequentially arranged from top to bottom.

The feeding side and the discharging side of the hot-press upper plate assembly are respectively provided with a feeding guide roller 62 and a discharging guide roller 63, the feeding guide roller 62 and the discharging guide roller 63 are rotatably connected to a band stretching plate 64, two sides of the band stretching plate 64 are connected with a cross beam 47 through band stretching connecting rods 65, each band stretching connecting rod 65 comprises a band stretching clamping head 66 at the upper end and a band stretching sliding rod 67 integrally arranged with the band stretching clamping head 66, each band stretching plate 64 is provided with a band stretching sliding rod connecting block 68 connected with the band stretching sliding rod 67 in a matched mode, and the cross beam is provided with a band stretching sliding rod through hole 69 in sliding fit with the band stretching sliding rod 67; the belt tensioning connecting rod 65 penetrates through a belt tensioning sliding rod through hole 69 from top to bottom, the bottom of the belt tensioning connecting rod is fixed with a belt tensioning sliding rod connecting block 68, and a belt tensioning clamp 66 is matched with the upper edge of the belt tensioning sliding rod through hole 69 for limiting; the belt tensioning slide is further sleeved with a belt tensioning spring 70, and the belt tensioning spring 70 is tightly pressed between the lower edge of the belt tensioning slide rod through hole 69 and the belt tensioning slide rod connecting block 68.

an upper belt tensioning and material storing roller 73 is arranged above the discharging guide roller 63, and the upper belt tensioning and material storing roller 73 is connected with a belt tensioning plate 64 through a supporting rod 71; the bottom of the supporting rod 71 is fixed with the strip stretching plate 64, and the strip stretching material storage upper roller 73 is rotatably connected with the upper end of the supporting rod 71; a lower belt tensioning and material storing roller 74 is further arranged between the upper belt tensioning and material storing roller 73 and the discharging guide roller 63, and the lower belt tensioning and material storing roller 74 is rotatably connected with the seat plate 33;

The label tape 1 is output from the traction roller component 3 and then sequentially passes through the feeding guide roller 62, the discharging guide roller 63, the upper tape-opening material-storing roller 73 and the lower tape-opening material-storing roller 74 and then is output to the tape-collecting component 5.

The seat plate 33 is provided with a belt-tensioning material-storing upper roller moving hole 75 for accommodating the belt-tensioning material-storing upper roller 73 to move up and down.

when the label is used, when a product is placed on the hot-pressing pillow block 48, the label 1 is also conveyed to a preset position, at the moment, the driving end of the beam driving cylinder 49 moves downwards, the beam 47, the connecting plate 58 and the hot-pressing upper plate assembly (the heat insulation plate 59, the hot-pressing head cover 60 and the hot-pressing head 61) are driven to move downwards, the hot-pressing head 61 is matched with the hot-pressing pillow block 48 to press the label 1 and the product tightly, the label on the label 1 is separated from the label 1 under the action of heat and is transferred onto the product, the heat transfer process is completed, the driving end of the beam driving cylinder 49 moves upwards to drive the hot-pressing upper plate assembly to move upwards to return to the original state, and the;

In the process that the cross beam 47 moves up and down, the cross beam guide rod 50 and the cross beam guide frame 51 play a role in guiding, and the running precision is improved;

in order to avoid the damage to the hot pressing head 61 and the hot pressing pillow block 48 in the thermal transfer process, the hot pressing head spring 56 is sleeved on the cross beam connecting rod 52, and when the hot pressing head 61 contacts with the hot pressing pillow block 48, the outer edge of the joint connecting hole 54 can push the hot pressing head spring 56 to further compress along the cross beam connecting rod 52 to play a role in buffering, so that products with hot pressing can be hot pressed no matter the products are hard or soft, particularly hard products, and the rigid contact between the hot pressing upper plate assembly and the hot pressing pillow block 48 is avoided, and the damage is caused.

The label tape 1 is output from the position between the traction outer rubber covered roller 30 and the compression roller 31, guided by the transition roller, and then sequentially output to the tape collecting component 5 together with the feeding guide roller 62, the discharging guide roller 63, the tape-opening material-storing upper roller 73 and the tape-opening material-storing lower roller 74.

When the pressure of the label tape 1 on the feeding guide roller 62 and the discharging guide roller 63 on the two roller bodies changes, especially when the pressure is increased, the pressure can be transmitted to the tape tension plate 64, the tape tension plate 64 is compressed with the tape tension spring 70 between the tape tension connecting rod 65 and the cross beam, and through the buffer action of the tape tension spring 70, the tape tension plate 64 can force the tape tension connecting rod 65 to move upwards to slide in cooperation with the tape tension sliding rod through hole 69, so that the label tape 1 is prevented from being damaged.

When the hot-pressing upper plate assembly moves downwards, a supplementary section needs to be added to the label tape 1 on the two sides of the hot-pressing upper plate assembly; the upper band-opening material storage roller 73 moves downwards along with the band-opening plate 64, the lower band-opening material storage roller 74 moves up and down, and the label band 1 between the upper band-opening material storage roller 73 and the lower band-opening material storage roller 74 is released and just supplemented to the two sides of the hot-pressing upper plate group;

similarly, when the hot-pressing upper plate assembly moves downwards, the label tapes 1 on two sides of the hot-pressing upper plate assembly are released and supplemented between the upper strip storage roller 73 and the lower strip storage roller 74;

the label tape 1 between the lower tension tape storage roller 74 and the subsequent transition roller of the traction outer rubber roller 30 can be automatically adjusted, so that the problem of length compensation of the label tape 1 caused by up-and-down movement of the hot-pressing upper plate set is solved.

Embodiment 4, further optimizing embodiment 3, transition guide rollers 76 are arranged between the label supplying assembly 2 and the drawing roller assembly 3, between the drawing roller assembly 3 and the feeding guide roller 62, and between the tension belt storing lower roller 74 and the belt collecting assembly 5, and the transition guide rollers 76 are rotatably connected on the seat plate 33.

And a measuring and marking assembly 77 is arranged between the traction roller assembly 3 and the hot-pressing assembly 4. The side mark component is a photoelectric sensor and detects continuous labels on the label tape 1 so as to determine the time node of the label tape 1 for suspending transmission. The photoelectric sensor is a groove type photoelectric sensor.

The hot-pressing pillow block 48 is fixed on a base 78, the seat plate 33 is connected with the base 78 through a connecting arm 79, and a laser marking assembly 80 is arranged on the connecting arm 79. The laser marking assembly 80 is used for product positioning.

The outer side of the hot pressing assembly 4 is further provided with a protection plate 81, the protection plate 81 is connected with the beam guide frame 51 through a protection plate connecting rod 82, and the protection plate 81 is vertically arranged and is preferably made of transparent glass or plastic plates. The protection plate 81 can protect the hot press assembly 4 to a certain extent.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. a thermal transfer assembly, comprising: the label supplying and collecting device comprises a label supplying assembly, a traction roller assembly, a hot pressing assembly and a tape collecting assembly which are sequentially arranged along the label tape conveying direction and are connected in a matching mode, wherein the traction roller assembly and the tape collecting assembly are connected with a driving motor in a synchronous driving mode.

2. the thermal transfer assembly of claim 1, wherein: the belt collecting component comprises a belt collecting shaft, a belt collecting adjusting nut, a belt collecting spring, a friction component, an end cover connecting component and a belt collecting synchronous belt wheel, wherein the belt collecting adjusting nut, the belt collecting spring, the friction component, the end cover connecting component and the belt collecting synchronous belt wheel are sequentially sleeved along the belt collecting shaft from front to back; the end cover connecting assembly is fixedly connected with the seat plate, and a tape winding shaft hole for accommodating a tape winding shaft to pass through is formed in the seat plate; the belt winding shaft is rotatably connected with the end cover connecting assembly through the belt winding bearing;

3. the thermal transfer assembly of claim 2, wherein: a belt take-up righting sleeve is arranged between the belt take-up outer sleeve and the belt take-up shaft, and the belt take-up righting sleeve is a copper sleeve.

4. The thermal transfer assembly of claim 2, wherein: the end cover connecting assembly comprises a front end cover and a rear end cover, wherein the front end cover and the rear end cover are arranged on two sides of the seat plate and are connected through end cover screws.

5. the thermal transfer assembly of claim 2, wherein: the rear part of the belt retracting coat is provided with a belt retracting tray which is vertical to the axis of the belt retracting coat; the paper clamping fork is arranged on the tape collecting outer sleeve and is U-shaped, and paper tape clamping grooves matched and clamped with the two fork legs of the paper clamping fork are formed in the two sides of the outer wall of the tape collecting outer sleeve.

6. The thermal transfer assembly of claim 2, wherein: the two end faces of the belt-retracting jacket are inwards sunken to form a belt-retracting annular concave table, and the front friction gasket and the rear friction gasket are both arranged in the belt-retracting annular concave table and are in contact friction with the surface of the belt-retracting annular concave table in a matched mode.

7. the thermal transfer assembly of any of claims 2-6, wherein: the traction roller assembly comprises a traction roller shaft, the traction roller shaft is rotatably connected with the seat plate through a traction bearing, a traction synchronous pulley is connected to the rear end of the traction roller shaft, and the traction synchronous pulley, the belt winding synchronous pulley and the output end of the driving motor are connected through synchronous belt drive.

8. The thermal transfer assembly of claim 7, wherein: the front part of the traction roller shaft is provided with a traction outer rubber roller, the seat plate is also provided with a compression roller which is matched and compressed with the traction outer rubber roller, and the compression roller is rotatably connected with the seat plate through a swing arm.

9. The thermal transfer assembly of claim 8, wherein: the label supplying assembly comprises a label supplying disc shaft, a front label supplying limiting baffle ring, a rear label supplying limiting baffle ring and a label supplying spring, wherein the front label supplying limiting baffle ring, the rear label supplying limiting baffle ring and the label supplying spring are sequentially sleeved along the label supplying disc shaft from front to back; the label supply spring is tightly pressed between the label supply limiting rear baffle ring and the label supply spring rear limiting convex ring; a label supplying disc sleeve is further sleeved on the label supplying disc shaft between the label supplying limiting front retaining ring and the label supplying limiting rear retaining ring, and the label supplying disc sleeve is clamped between the label supplying limiting front retaining ring and the label supplying limiting rear retaining ring;

10. the thermal transfer assembly of claim 9, wherein: a label supply rear concave platform for accommodating a label supply spring is arranged at the rear end of the label supply disc sleeve; a mark supply centering sleeve is also arranged between the mark supply disc sleeve and the mark supply disc shaft; the rear end of the label supplying disc shaft is fixedly connected with the seat plate.

11. The thermal transfer assembly of claim 10, wherein: a marker supplying tray support is fixed at the rear part of the marker supplying tray sleeve, a marker end cover is sleeved at the front part of the marker supplying tray sleeve, a sealing rubber ring is arranged between the inner edge of the marker end cover and the marker supplying tray sleeve, and a rubber ring groove for accommodating the sealing rubber ring is formed in the inner edge of the marker end cover; the label end cover is matched with the label tray to clamp the label roll.

12. The thermal transfer assembly of claim 11, wherein: the hot pressing assembly comprises a cross beam which moves up and down, the lower part of the cross beam is connected with a hot pressing upper plate assembly, and the lower part of the hot pressing upper plate assembly is provided with a hot pressing pillow block which is matched with the hot pressing upper plate assembly for hot pressing; a cross beam driving cylinder is fixed on the seat plate, the cross beam driving cylinder is vertically arranged, and the driving end part of the cross beam driving cylinder is in driving connection with the cross beam through a joint;

13. the thermal transfer assembly of claim 12, wherein: the connecting device is characterized in that a connecting hole is formed in the middle of the cross beam, a cross beam connecting rod is arranged at the bottom of the joint and penetrates through the connecting hole to be connected with the joint check ring, a hot pressing head spring is further sleeved on the cross beam connecting rod, a hot pressing head spring limiting concave table is formed in the connecting hole, and the hot pressing head spring is compressed between the hot pressing head spring limiting concave table and the joint.

14. the thermal transfer assembly of claim 13, wherein: the hot-pressing upper plate assembly is connected with the cross beam through a connecting plate and comprises a heat insulation plate, a hot-pressing head cover and a hot-pressing head which are sequentially arranged from top to bottom.

15. The thermal transfer assembly of claim 14, wherein: the feeding side and the discharging side of the hot-pressing upper plate assembly are respectively provided with a feeding guide roller and a discharging guide roller, the feeding guide roller and the discharging guide roller are rotatably connected to a band stretching plate, two sides of the band stretching plate are connected with a cross beam through band stretching connecting rods, each band stretching connecting rod comprises a band stretching clamping head at the upper end and a band stretching sliding rod integrally arranged with the band stretching clamping head, a band stretching sliding rod connecting block connected with the band stretching sliding rod in a matched mode is arranged on the band stretching plate, and a band stretching sliding rod through hole in sliding fit with the band stretching sliding rod is arranged on the cross beam; the tension belt connecting rod penetrates through the tension belt sliding rod through hole from top to bottom, the bottom of the tension belt connecting rod is fixed with the tension belt sliding rod connecting block, and the tension belt clamping head is matched with the upper edge of the tension belt sliding rod through hole for limiting; the tension belt slider is further sleeved with a tension belt spring, and the tension belt spring is tightly pressed between the lower edge of the tension belt slide rod through hole and the tension belt slide rod connecting block.

16. The thermal transfer assembly of claim 15, wherein: an upper belt storage roller is arranged above the discharge guide roller and is connected with a belt tensioning plate through a supporting rod; the bottom of the supporting rod is fixed with a strip stretching plate, and the strip stretching material storage upper roller is rotatably connected with the upper end of the supporting rod; and a belt tensioning material storage lower roller is further arranged between the belt tensioning material storage upper roller and the discharging guide roller and is rotatably connected with the seat plate.

17. The thermal transfer assembly of claim 16, wherein: the label tape is output from the traction roller assembly and then sequentially output to the tape collecting assembly after passing through the feeding guide roller, the discharging guide roller, the tape-opening material-storing upper roller and the tape-opening material-storing lower roller.

18. the thermal transfer assembly of claim 17, wherein: the seat board is provided with a strip material storage upper roller moving hole for accommodating the strip material storage upper roller to move up and down.

19. The thermal transfer assembly of claim 18, wherein: transition guide rollers are arranged between the label supplying assembly and the pull roller assembly, between the pull roller assembly and the feeding guide roller, between the tension belt material storing lower roller and the belt collecting assembly, and the transition guide rollers are rotatably connected to the seat plate.

20. The thermal transfer assembly of claim 1 or 19, wherein: and a measuring and marking assembly is arranged between the traction roller assembly and the hot pressing assembly.

21. The thermal transfer assembly of claim 19, wherein: the hot-pressing pillow block is fixed on the base, the seat plate is connected with the base through a connecting arm, and a laser marking assembly is arranged on the connecting arm.