A UV dryer used in the preparation process of thermal transfer film

Abstract

The present invention relates to a UV dryer for use in a thermal transfer film preparation process, comprising a chassis, end covers are installed at both ends of the chassis, and film grooves are provided on the end covers, cold air ducts are installed on side walls of the chassis, and the cold air ducts are connected to the chassis through cold air pipes, fans are installed at both ends of the top side of the chassis, and the fans are connected to the chassis through air ducts; a bidirectional threaded rod is rotated by a turning handle on the outside of the chassis, thereby driving a threaded limiting film plate to move along a guide rod, and adjusting the spacing between the two limiting film plates to adapt to the thermal transfer film, and when the thermal transfer film is conveyed on the end rollers and transmission rollers of the chassis, the side walls of the thermal transfer film are limited to avoid deviation of the thermal transfer film during the conveying process, and the spacing of the material moving mechanism is synchronously adjusted with the limiting film plates, and when the thermal transfer film is clamped and moved, bending and wrinkling of the thermal transfer film are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of UV dryers, and in particular to a UV dryer used in a thermal transfer film preparation process. Background Art

[0002] The UV ink is printed onto the thermal transfer film, and then the UV ink is cured and dried in a UV dryer. The UV drying temperature of the printed matter is controlled at 45°C, and the UV drying speed reaches more than 9,000 sheets / hour, which meets the low-temperature and high-speed process conditions of offset printing. It is widely used in large-scale printing industries such as cigarette label packaging printing and color packaging printing.

[0003] Different thermal transfer film carriers have different widths, so when moving in the UV dryer, they are prone to deviation. Before the initial thermal transfer film loading, the thermal transfer film is manually passed through the UV dryer, which is complicated and cannot ensure smooth loading of the thermal transfer film. When transported by rollers, the thermal transfer film is prone to wave and bend, affecting the uncured ink pattern.

[0004] When irradiated by UV lamp, the position of the existing reflector is fixed. Therefore, when the width of the thermal transfer film becomes smaller, it is easy to cause the UV light illumination in some areas to be wasted. In addition, the UV lamp has a certain working life and needs to be maintained and replaced regularly. When replacing, the UV dryer chassis needs to be disassembled and assembled, resulting in low maintenance and replacement efficiency. Summary of the Invention

[0005] The problem solved by the present invention is to provide a UV dryer for use in the preparation process of thermal transfer film, which solves the problem that different thermal transfer film carriers have different widths, so they are prone to deviation when moving in the UV dryer. Before the initial loading of the thermal transfer film, the thermal transfer film is manually passed through the UV dryer, which is complicated to operate and cannot ensure smooth loading of the thermal transfer film. When transported by rollers, the thermal transfer film is prone to wave bending, affecting the uncured ink pattern. When irradiated by UV lamps, the position of the existing reflective plate is fixed. Therefore, when the width of the thermal transfer film becomes smaller, it is easy to cause waste of UV light in some areas. In addition, the UV lamp has a certain working life and needs to be maintained and replaced regularly. When replaced, the UV dryer chassis needs to be disassembled and assembled, resulting in low maintenance and replacement efficiency. Technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A UV dryer for use in the preparation of thermal transfer films, comprising a chassis, end shields mounted at both ends of the chassis, each provided with a film groove, a cold air duct mounted on a side wall of the chassis, the cold air duct being connected to the chassis via a cold air pipe, and fans mounted at both ends of the top side of the chassis, the fans being connected to the chassis via an air duct.

[0008] A lampshade is provided on the top inner side of the chassis, a UV lamp holder is slidably installed in the lampshade, and a plurality of UV lamps are installed in the UV lamp holder;

[0009] Two end rollers and several transmission rollers are installed in the chassis, and the two end rollers are located at both ends of the chassis. Limiting film plates are slidably installed on the outer sides of the end rollers and the transmission rollers, and a material moving mechanism for pulling and loading the thermal transfer film is slidably installed on the limiting film plates.

[0010] Preferably, the UV lamp holder is rotatably mounted on the bottom side of the lifting sealing plate, and the lifting sealing plate is located outside the chassis. L-shaped mounting brackets are installed at both ends of the top side of the chassis, and a pneumatic cylinder is installed on the mounting bracket, and the telescopic end of the pneumatic cylinder is connected to the lifting sealing plate.

[0011] Preferably, a first shaft seat is installed at both ends of the bottom side of the lifting sealing plate, and both ends of the UV lamp seat are installed with the first shaft seat through a mounting shaft, a first motor is installed on one of the first shaft seats, and the output end of the first motor is connected to the mounting shaft.

[0012] Preferably, a bidirectional threaded rod and several guide rods are horizontally installed inside the chassis, the thread directions of the two ends of the bidirectional threaded rod are opposite, and the bidirectional threaded rod is threadedly connected to the limiting diaphragm plate, and a turning handle is installed on the end of the bidirectional threaded rod outside the chassis, and the limiting diaphragm plate is slidably installed with the guide rod.

[0013] Preferably, a second reflective plate is installed on the top of the limiting membrane plate through a rotating shaft, a first reflective plate is slidably installed on the inner side of the second reflective plate, the top two ends of the first reflective plate are rotatably connected to the second shaft seat in the chassis, and the bottom end of the lampshade is close to the first reflective plate.

[0014] Preferably, end reflectors are vertically installed at both ends of the chassis, and the end reflectors are perpendicular to the lampshade, the first reflector and the second reflector, and are in contact with the lampshade, the first reflector and the second reflector.

[0015] Preferably, a guide plate is horizontally mounted on the outer side wall of the first reflective plate, and a plurality of slide bars penetrating the guide plate are mounted on the top of the second reflective plate.

[0016] Preferably, the material moving mechanism includes a slide seat slidably mounted on the inner wall of the limiting film plate, an adjustment seat parallel to the limiting film plate is mounted on the bottom side of the slide seat, a U-shaped seat is slidably mounted on the bottom of the adjustment seat, and a clamping plate for clamping the thermal transfer film is slidably mounted inside the U-shaped seat.

[0017] Preferably, a first sliding groove is opened on the side wall of the limiting membrane plate, a second motor is installed at the end of the limiting membrane plate, and a first threaded rod is installed in the first sliding groove at the output end of the second motor, and the first threaded rod is threadedly connected to the slide seat.

[0018] Preferably, a second sliding groove is provided on the bottom side of the adjustment seat, a third motor is installed on the end of the adjustment seat, the output end of the third motor is located in the second sliding groove and a second threaded rod is installed, and the second threaded rod is threadedly connected to the slider on the U-shaped seat, and a threaded handle is installed through the thread on the top side of the U-shaped seat, and the threaded handle is rotatably connected to the splint.

[0019] The beneficial effects of the present invention are:

[0020] By rotating the bidirectional threaded rod through the handle on the outside of the chassis, the threaded limiting film plate is driven to move along the guide rod, and the spacing between the two limiting film plates is adjusted to adapt to the thermal transfer film. When the thermal transfer film is conveyed on the end roller and the transmission roller of the chassis, the side wall of the thermal transfer film is limited to prevent the thermal transfer film from shifting during the conveying process. The spacing of the material moving mechanism is adjusted synchronously with the limiting film plate, so that the thermal transfer film is prevented from bending and wrinkling when the thermal transfer film is clamped and moved.

[0021] When the limiting film plate moves, the first reflective plate rotates between the second shaft seat, and the second reflective plate rotates on the rotating shaft. The first reflective plate and the second reflective plate slide relative to each other to adjust the angle. At this time, the first reflective plate, the second reflective plate, the lampshade and the end reflective plate cooperate to ensure that the area where the UV lamp light is reflected is adapted to the width of the thermal transfer film, thereby avoiding waste of resources.

[0022] The second motor of the material transfer mechanism works to achieve the translation of the adjustment seat, and the third motor works to achieve the translation of the U-shaped seat, so that the thermal transfer film before UV drying can pass through the adjustment seat and the U-shaped seat and pass through the chassis, so as to complete the traction and loading of the thermal transfer film before the initial processing;

[0023] The pneumatic cylinder on the mounting frame drives the lifting sealing plate to move up and down. When the lifting sealing plate moves to the top side of the UV lamp holder, the first motor drives the UV lamp holder to rotate 90 degrees, which is convenient for maintenance and replacement of the UV lamp on the UV lamp holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the installation structure of the end roller and the transmission roller of the present invention;

[0027] Figure 4 It is a partial cross-sectional view of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation structure of the material moving mechanism of the present invention;

[0029] Figure 6 It is a cross-sectional view of the slide seat and the adjustment seat of the present invention.

[0030] Legend:

[0031] 1. Chassis; 2. End cover; 3. Cooling air duct; 4. Cooling pipe; 5. Fan; 6. Air duct; 7. Membrane groove; 8. Mounting frame; 9. Pneumatic cylinder; 10. Lifting sealing plate; 11. First shaft seat; 12. First motor; 13. UV lamp holder; 14. End roller; 15. Drive roller; 16. Limiting membrane plate; 17. Bidirectional threaded rod; 18. Guide rod; 19. Material shifting mechanism; 20. Lamp cover; 21. First reflector; 22. Second reflector; 23. End reflector; 24. Second shaft seat; 25. Rotating shaft; 26. Guide plate; 27. Slide rod; 28. First threaded rod; 29. ​​Second motor; 30. First slide; 31. Slide seat; 32. Adjustment seat; 33. Third motor; 34. Second slide; 35. Second threaded rod; 36. U-shaped seat; 37. Slider; 38. Clamp; 39. Threaded handle. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] Specific examples are given below.

[0034] See also Figures 1 to 6 A UV dryer for use in the preparation of thermal transfer films comprises a chassis 1, end shields 2 are mounted on both ends of the chassis 1, and film grooves 7 are formed on the end shields 2, a cooling air duct 3 is mounted on the side wall of the chassis 1, and the cooling air duct 3 is connected to the chassis 1 through a cooling air pipe 4, and fans 5 are mounted on both ends of the top side of the chassis 1, and the fans 5 are connected to the chassis 1 through an air duct 6;

[0035] A lampshade 20 is provided on the top of the inner side of the chassis 1, and a UV lamp holder 13 is slidably installed in the lampshade 20, and a plurality of UV lamps are installed in the UV lamp holder 13;

[0036] Two end rollers 14 and several transmission rollers 15 are installed in the chassis 1, and the two end rollers 14 are located at both ends of the chassis 1. Limiting film plates 16 are slidably installed on the outer sides of the end rollers 14 and the transmission rollers 15 at both ends. A two-way threaded rod 17 and several guide rods 18 are horizontally installed inside the chassis 1. The threads at both ends of the two-way threaded rod 17 are in opposite directions, and the two-way threaded rod 17 is threadedly connected to the limiting film plates 16. The end of the two-way threaded rod 17 is located on the outside of the chassis 1 and is equipped with a turning handle. The two-way threaded rod 17 is rotatably installed with the side wall of the chassis 1 and cannot move horizontally on the chassis 1. The limiting film plates 16 and the guide rods 18 are slidably installed. The two-way threaded rod 17 is rotated by turning the handle, thereby driving the threaded limiting film plates 16 to move along the guide rods 18, and adjusting the spacing of the limiting film plates 16 to adapt to the thermal transfer film;

[0037] The UV lamp holder 13 is rotatably mounted on the bottom side of the lifting sealing plate 10, and the lifting sealing plate 10 is located outside the chassis 1. L-shaped mounting brackets 8 are installed at both ends of the top side of the chassis 1. A pneumatic cylinder 9 is installed on the mounting bracket 8, and the telescopic end of the pneumatic cylinder 9 is connected to the lifting sealing plate 10. The lifting sealing plate 10 is driven to rise and fall by the operation of the pneumatic cylinder 9, and then the UV lamp holder 13 is driven to rise and fall, and the position of the UV lamp holder 13 is adjusted. First shaft seats 11 are installed on both ends of the bottom side of the lifting sealing plate 10. Both ends of the UV lamp holder 13 are installed with the first shaft seats 11 through the mounting shaft. A first motor 12 is installed on one of the first shaft seats 11, and the output end of the first motor 12 is connected to the mounting shaft. When the UV lamp holder 13 is moved out of the chassis 1, the first motor 12 is used to drive the UV lamp holder 13 to rotate 90°, which is convenient for repairing and replacing the UV lamp on the UV lamp holder 13;

[0038] The top of the limiting membrane 16 is provided with a second reflecting plate 22 via a rotating shaft 25, and the inside of the second reflecting plate 22 is slidably provided with a first reflecting plate 21, and the top ends of the first reflecting plate 21 are rotatably connected to the second shaft seat 24 in the chassis 1, and the bottom end of the lampshade 20 is close to the first reflecting plate 21, and the end reflecting plates 23 are vertically provided at both ends of the interior of the chassis 1, and the end reflecting plates 23 are perpendicularly arranged to the ends of the lampshade 20, the first reflecting plate 21 and the second reflecting plate 22, and the end reflecting plates 23 are connected to the ends of the lampshade 20, the first reflecting plate 21 and the second reflecting plate 22. A guide plate 26 is horizontally installed on the outer side wall of the first reflective plate 21, and a plurality of slide rods 27 passing through the guide plate 26 are installed on the top of the second reflective plate 22. When the limiting film plate 16 moves, the first reflective plate 21 rotates between the second shaft seat 24, and the second reflective plate 22 rotates on the rotating shaft 25. The first reflective plate 21 and the second reflective plate 22 slide relative to each other to adjust the angle. At this time, the first reflective plate 21, the second reflective plate 22, the lampshade 20 and the end reflective plate 23 cooperate to ensure that the area where the light of the UV lamp is reflected is adapted to the width of the thermal transfer film.

[0039] The limiting film plate 16 is slidably mounted with a moving mechanism 19 for pulling and loading the thermal transfer film. The moving mechanism 19 includes a slide 31 slidably mounted on the inner wall of the limiting film plate 16, and an adjusting seat 32 parallel to the limiting film plate 16 is mounted on the bottom side of the slide 31. A U-shaped seat 36 is slidably mounted on the bottom of the adjusting seat 32, and a clamping plate 38 for clamping the thermal transfer film is slidably mounted in the U-shaped seat 36. A first slide groove 30 is provided on the side wall of the limiting film plate 16, and a second motor 29 is mounted on the end of the limiting film plate 16, and the output end of the second motor 29 is located in the first slide groove 30 and a first threaded rod 28 is installed. The first threaded rod 28 is threadedly connected to the slide 31. The second motor 29 drives the first threaded rod 28 to rotate when it works, and then drives the threaded slide 31 to translate. A second slide groove 34 is provided on the bottom side of the adjusting seat 32, and a third motor 33 is mounted on the end of the adjusting seat 32. The output end of the machine 33 is located in the second slide groove 34 and a second threaded rod 35 is installed in the second slide groove 34, and the second threaded rod 35 is threadedly connected to the slider 37 on the U-shaped seat 36. The top side of the U-shaped seat 36 is threaded with a threaded handle 39, and the threaded handle 39 is rotatably connected to the clamping plate 38. The third motor 33 drives the second threaded rod 35 to rotate, and then drives the threaded connected slider 37 to move. When the ends of the thermal transfer film are placed in the two U-shaped seats 36 respectively, the clamping plate 38 is driven downward by rotating the threaded handle 39 to fix the thermal transfer film. The second motor 29 of the material moving mechanism 19 works to achieve the translation of the adjustment seat 32, and the third motor 33 works to achieve the translation of the U-shaped seat 36, so that the thermal transfer film before UV drying can pass through the adjustment seat 32 and the U-shaped seat 36 and pass through the chassis 1, so as to complete the traction and loading of the thermal transfer film before the initial processing.

[0040] The working principle of the present invention is as follows: the bidirectional threaded rod 17 is rotated by the turning handle on the outside of the chassis 1, thereby driving the threaded limiting film plate 16 to move along the guide rod 18. The two limiting film plates 16 move on the end roller 14 and the transmission roller 15. The spacing between the limiting film plates 16 is adjusted to adapt to the thermal transfer film. When the limiting film plates 16 move horizontally, the first reflector 21 rotates between the second shaft seat 24, and the second reflector 22 rotates on the rotating shaft 25. At the same time, the first reflector 21 and the second reflector 22 slide relative to each other, cooperate with the lampshade 20 and the end reflector 23, and reflect the light of the UV lamp.

[0041] The second motor 29 rotates the first threaded rod 28, which in turn drives the threadedly connected slide 31 to translate. When the slide 31 moves close to the film slot 7 of the chassis 1 for loading the thermal transfer film, one end of the adjustment seat 32 extends out of the film slot 7. The third motor 33 then rotates the second threaded rod 35, which in turn drives the threadedly connected slide 37 to move. The U-shaped seat 36 translates from the bottom side of the adjustment seat 32 to one end of the adjustment seat 32. The U-shaped seat 36 is now outside the chassis 1, passing the film slot 7. The ends of the thermal transfer film are placed in the two U-shaped seats 36 respectively. The clamping plate 38 is moved downward by rotating the threaded handle 39 to secure the thermal transfer film. Then the second motor 29 works to drive the slide 31 to move to the film groove 7 near the chassis 1 for unloading the thermal transfer film, and the other end of the adjustment seat 32 extends out of the film groove 7. At this time, the third motor 33 works to drive the U-shaped seat 36 to move horizontally to the other end of the adjustment seat 32, passing the thermal transfer film through the chassis 1, completing the traction and loading of the thermal transfer film before processing. Then the thermal transfer film moves inside the end roller 14 and the transmission roller 15 of the chassis 1. At this time, the thermal transfer film is irradiated by the UV lamp in the UV lamp holder 13. The UV ink of the thermal transfer film is under the action of ultraviolet rays. Under the irradiation of ultraviolet rays, the photopolymerization initiator in the UV ink absorbs photons of a certain wavelength and turns into free molecules, becoming free radicals. Then, through the transfer of intermolecular energy, the polymerizable prepolymer and the photosensitive monomer are turned into an excited state, generating a charge transfer complex. The complex is continuously cross-linked and polymerized to solidify into a film. At the same time, the fan 5 works to discharge the exhaust gas and high-temperature air generated in the chassis 1, and the cold air duct 3 passes the cold air through the cold air pipe 4 into the chassis 1, thereby realizing the temperature regulation of the air in the chassis 1 and completing the drying of the thermal transfer film.

[0042] Before the thermal transfer film is loaded, the bidirectional threaded rod 17 is rotated by the handle on the outside of the chassis 1, thereby driving the threaded limiting film plate 16 to move along the guide rod 18, and adjusting the spacing between the two limiting film plates 16 to match the width of the thermal transfer film. When the thermal transfer film is conveyed on the end roller 14 and the transmission roller 15 of the chassis 1, the limiting film plate 16 limits the side wall of the thermal transfer film to prevent the thermal transfer film from shifting during the conveying process, and the spacing of the material moving mechanism 19 is adjusted synchronously with the limiting film plate 16. When the thermal transfer film is clamped and moved, the thermal transfer film is prevented from bending and wrinkling. The distance between the two U-shaped seats 36 can be adjusted while adjusting the two limiting film plates 16, so that the thermal transfer film will not bend or wrinkle due to excessive width when clamped between the two U-shaped seats 36. This avoids lateral bending of the thermal transfer film when clamping thermal transfer films of different specifications.

[0043] When the limiting film plate 16 moves, the first reflective plate 21 rotates between the second shaft seat 24, and the second reflective plate 22 rotates on the rotating shaft 25. The first reflective plate 21 and the second reflective plate 22 slide relative to each other to adjust the angle. At this time, the first reflective plate 21, the second reflective plate 22, the lampshade 20 and the end reflective plate 23 cooperate to ensure that the area where the light of the UV lamp is reflected is adapted to the width of the thermal transfer film, avoiding waste of resources.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A UV dryer used in the preparation process of thermal transfer film, characterized in that: The invention comprises a chassis (1), end covers (2) are installed at both ends of the chassis (1), and a membrane groove (7) is provided on the end covers (2), a cold air duct (3) is installed on the side wall of the chassis (1), and the cold air duct (3) is connected to the chassis (1) through a cold air pipe (4), and fans (5) are installed at both ends of the top side of the chassis (1), and the fans (5) are connected to the chassis (1) through an air duct (6); A lampshade (20) is provided on the top inner side of the chassis (1), a UV lamp holder (13) is slidably mounted in the lampshade (20), and a plurality of UV lamps are mounted in the UV lamp holder (13); Two end rollers (14) and a plurality of transmission rollers (15) are installed in the chassis (1), and the two end rollers (14) are located at both ends of the chassis (1). The outer sides of the two ends of the end rollers (14) and the transmission rollers (15) are respectively slidably installed with limiting film plates (16), and a material transfer mechanism (19) for pulling and loading the thermal transfer film is slidably installed on the limiting film plates (16); A second reflective plate (22) is mounted on the top of the limiting membrane plate (16) via a rotating shaft (25), a first reflective plate (21) is slidably mounted on the inner side of the second reflective plate (22), two ends of the top of the first reflective plate (21) are rotatably connected to a second shaft seat (24) in the chassis (1), and the bottom end of the lampshade (20) is close to the first reflective plate (21); End reflective plates (23) are vertically installed at both ends of the chassis (1), and the end reflective plates (23) are vertically arranged with the ends of the lampshade (20), the first reflective plate (21), and the second reflective plate (22), and the end reflective plates (23) are in contact with the ends of the lampshade (20), the first reflective plate (21), and the second reflective plate (22).

2. The UV dryer used in the preparation process of thermal transfer film according to claim 1, characterized in that: The UV lamp holder (13) is rotatably mounted on the bottom side of the lifting sealing plate (10), and the lifting sealing plate (10) is located outside the chassis (1). L-shaped mounting frames (8) are mounted on both ends of the top side of the chassis (1), and a pneumatic cylinder (9) is mounted on the mounting frame (8), and the telescopic end of the pneumatic cylinder (9) is connected to the lifting sealing plate (10).

3. The UV dryer used in the preparation process of thermal transfer film according to claim 2, characterized in that: Both ends of the bottom side of the lifting sealing plate (10) are mounted with first shaft seats (11), and both ends of the UV lamp holder (13) are mounted to the first shaft seats (11) via a mounting shaft. A first motor (12) is mounted on one of the first shaft seats (11), and an output end of the first motor (12) is connected to the mounting shaft.

4. The UV dryer used in the preparation process of thermal transfer film according to claim 1, characterized in that: A bidirectional threaded rod (17) and a plurality of guide rods (18) are horizontally installed inside the chassis (1), the threads at both ends of the bidirectional threaded rod (17) are in opposite directions, the bidirectional threaded rod (17) is threadedly connected to the limiting membrane plate (16), and a turning handle is installed at the end of the bidirectional threaded rod (17) outside the chassis (1), and the limiting membrane plate (16) and the guide rod (18) are slidably installed.

5. The UV dryer used in the preparation process of thermal transfer film according to claim 1, characterized in that: A guide plate (26) is horizontally mounted on the outer side wall of the first reflective plate (21), and a plurality of slide bars (27) penetrating the guide plate (26) are mounted on the top of the second reflective plate (22).

6. The UV dryer used in the preparation process of thermal transfer film according to claim 1, characterized in that: The material shifting mechanism (19) comprises a slide seat (31) slidably mounted on the inner wall of the limiting film plate (16); an adjustment seat (32) parallel to the limiting film plate (16) is mounted on the bottom side of the slide seat (31); a U-shaped seat (36) is slidably mounted on the bottom of the adjustment seat (32); a clamping plate (38) for clamping the thermal transfer film is slidably mounted in the U-shaped seat (36).

7. The UV dryer used in the preparation process of thermal transfer film according to claim 6, characterized in that: A first sliding groove (30) is provided on the side wall of the limiting membrane plate (16), a second motor (29) is installed at the end of the limiting membrane plate (16), and a first threaded rod (28) is installed at the output end of the second motor (29) in the first sliding groove (30), and the first threaded rod (28) is threadedly connected to the slide seat (31).

8. The UV dryer used in the preparation process of thermal transfer film according to claim 7, characterized in that: A second slide groove (34) is provided on the bottom side of the adjustment seat (32), and a third motor (33) is installed at the end of the adjustment seat (32). The output end of the third motor (33) is located in the second slide groove (34) and is installed with a second threaded rod (35), and the second threaded rod (35) is threadedly connected to the slider (37) on the U-shaped seat (36). A threaded handle (39) is installed through the thread on the top side of the U-shaped seat (36), and the threaded handle (39) is rotatably connected to the splint (38).

Images