PU film coating equipment and process

Abstract

The invention belongs to the field of PU (polyurethane) films, particularly relates to PU film coating equipment and a PU film coating process, and provides the following scheme aiming at the problems that when release paper is fed into an existing device, the operation is relatively tedious, and meanwhile, a coated PU material is easy to be uneven and is inconvenient to use subsequently, the PU film coating equipment comprises a drying box and the release paper, one side of the drying box is fixedly connected with a first connecting rod, one end of the first connecting rod is fixedly connected with a first side plate, and one side of the first side plate is rotationally connected with two symmetrically-arranged air expansion shafts. According to the utility model, the release paper and the wind-up roll are quickly mounted and fixed, the production efficiency is greatly improved, the manual operation time is reduced, the PU material can be uniformly attached to the surface of the release paper through the design of the scraper and the height adjustability of the scraper, the thickness of the PU film is controlled by adjusting the height of the scraper, and the consistency and controllability of the product quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PU films, and in particular to a PU film coating device and process. Background Art

[0002] PU film has good elasticity and high lightness. Although it is extremely thin (0.012-0.035mm) in waterproofness, it has physical properties that other materials cannot match (it can withstand water pressure above 10000mm water column). The introduction of hydrophilic agent makes the film have excellent moisture permeability (human sweat can freely penetrate through the film) in addition to high waterproof performance.

[0003] When coating the PU film, the PU material needs to be coated on the release paper and then removed after drying. However, when feeding the release paper, the operation is relatively cumbersome, and the coated PU material is prone to unevenness, which is not convenient for subsequent use. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when PU film is coated in the prior art, the PU material needs to be coated on release paper and then separated after drying, but the operation is relatively cumbersome when feeding the release paper, and the coated PU material is prone to unevenness, which is inconvenient for subsequent use. A PU film coating device and process are proposed to solve the problem that

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A PU film coating device, comprising a drying box and release paper, one side of the drying box is fixedly connected to a No. 1 connecting rod, one end of the No. 1 connecting rod is fixedly connected to a No. 1 side plate, one side of the No. 1 side plate is rotatably connected to two symmetrically arranged air shafts, the release paper is wound around the air shafts, two symmetrically arranged rectangular holes are opened on both sides of the drying box, the release paper passes through the rectangular holes, one side of the No. 1 side plate is fixedly connected to a servo motor, the output shaft of the servo motor is fixedly connected to one end of one of the air shafts, and one side of the drying box is provided with a blocking component for blocking the two air shafts;

[0007] Two symmetrically arranged No. 2 connecting rods are fixedly connected to both sides of the drying box, and one end of the two No. 2 connecting rods on the same side is fixedly connected to the same rectangular frame, and a coating component for coating PU material is arranged inside the rectangular frame;

[0008] Two symmetrically arranged slide grooves are provided on the inner walls of both sides of the drying box, a slider is slidably connected inside the slide groove, and a clamping component for clamping release paper is provided on one side of the slider.

[0009] In a possible design, the sealing assembly includes a rectangular inner plate fixedly connected to one side of the drying box, the outer wall of the rectangular inner plate is slidably sleeved with a rectangular sleeve plate, a No. 1 spring is fixedly connected between the inner wall of one side of the rectangular sleeve plate and one end of the rectangular inner plate, and a baffle is fixedly connected to one end of the rectangular sleeve plate, and the baffle is in conflict with one end of the inflatable shaft.

[0010] In a possible design, the coating assembly includes two strip grooves opened on both sides of the bottom of a rectangular frame, a plurality of thread grooves are opened on one side of the rectangular frame, the plurality of thread grooves are divided into two groups and are respectively opened on both sides of the rectangular frame, a scraper is arranged on one side of the rectangular frame, the internal thread of the scraper passes through two symmetrically arranged bolts, and the bolts are threadedly connected to the thread groove.

[0011] In a possible design, a strip cavity is opened on the top inner wall of one of the strip grooves, a pressure plate slides through the interior of the strip cavity, two symmetrically arranged No. 2 springs are fixedly connected between the top of the pressure plate and the top inner wall of the strip cavity, and one side of the pressure plate is arranged in an arc shape.

[0012] In a possible design, the clamping assembly includes a vertical groove opened on one side of the slider, and two symmetrically arranged protrusions are slidably penetrated inside the vertical groove, and the same No. 3 spring is fixedly connected between the two protrusions. A clamping block is fixedly connected to one side of the protrusion, and two symmetrically arranged give-way grooves are opened on the top inner wall and the bottom inner wall of the slide groove, and the two give-way grooves are arranged at both ends of the slide groove, one end of the protrusion extends to the inside of the give-way groove, and the same connecting plate is fixedly connected between the two sliders on the same side.

[0013] In a possible design, a same screw rod is rotatably connected between the inner walls on both sides of one of the slide grooves, one end of the screw rod rotates through the drying box and is fixedly connected to a hand wheel, and the screw rod thread passes through the slider.

[0014] In a possible design, two symmetrically arranged No. 2 side panels are fixedly connected to one side of the drying box, two symmetrically arranged guide rollers are rotatably connected between the two No. 2 side panels, and a plurality of heating tubes are arranged inside the drying box.

[0015] A process for PU film coating equipment specifically comprises the following steps:

[0016] S1, preparation stage: the release paper reel is sleeved on the lower air shaft, the winding roller is sleeved on the upper air shaft, and fixed by a baffle;

[0017] S2, clamping and conveying: use the clamping block to clamp one end of the release paper, and drive the screw rod and the slider to pass the release paper through the drying box and around the guide roller to achieve initial conveying;

[0018] S3, coating and leveling: put PU material into the rectangular frame, evenly coat it on the surface of the release paper with a scraper, and scrape off excess material to ensure uniform thickness of the PU film;

[0019] S4, drying treatment: Start the heating tube in the drying box to dry the PU film on the release paper, then turn the direction through the guide roller and enter the drying box again for secondary drying to ensure that both sides are dried thoroughly;

[0020] S5, winding is completed: the dried release paper is wound on the winding roller for winding, completing the entire production process.

[0021] In the present application, when in use, the baffle is first pushed horizontally, and the baffle drives the rectangular sleeve plate to move horizontally toward the rectangular inner plate and squeeze the No. 1 spring, and the reel with the release paper is sleeved on the lower air shaft, and then the reel is sleeved on the upper air shaft. After the baffle is released, the baffle moves to one end of the two air shafts again to seal;

[0022] When one end of the release paper passes through the drying box, one end of the release paper can be placed between multiple clamping blocks. At this time, the hand wheel is turned, the hand wheel drives the screw rod to rotate, the screw rod drives the slider to move horizontally, and the slider drives the clamping blocks on both sides to move horizontally. At this time, the protrusion moves out from the inside of the give way groove to the inside of the slide groove. At this time, the two protrusions squeeze the No. 3 spring and drive the two clamping blocks to approach each other. The two clamping blocks clamp the release paper and then move until the release paper moves to the other end of the drying box. At this time, after the release paper passes around the two guide rollers in turn, the above operation is used to pass the release paper through the drying box from the top of the drying box again, and it is wound on the winding roller for winding;

[0023] At this time, PU material is put into the rectangular frames on both sides, so that the PU material can adhere to the surface of the release paper, and the scraper can scrape off the excess material to ensure that the PU material is even. At this time, the pressure plate can be pressed against the surface of the release paper to prevent the material from flowing out. The scraper is fixed to one side of the rectangular frame by bolts, and the bolts can be installed in the threaded grooves at different heights to adjust the height of the scraper and change the thickness of the PU film.

[0024] At this time, after the upper surface of the release paper is attached with PU film, it enters the interior of the drying box, and the multiple heating tubes inside the drying box are started to dry the PU film. After the release paper passes through the guide roller to change direction, it can enter the drying box again through the other side of the drying box, so that both sides of the release paper are attached with PU film. At this time, it can be dried again through the drying box, and then the winding process is completed, which is convenient to use.

[0025] Beneficial effects:

[0026] In the present invention, efficient and automated operation is achieved: through the designed mechanical structure, such as the baffle, the rectangular sleeve plate, the air shaft, etc., the release paper and the winding roller are quickly installed and fixed, which greatly improves the production efficiency and reduces the manual operation time.

[0027] Precise clamping and conveying: The use of components such as screw rods, sliders, clamping blocks and bumps realizes precise clamping and stable conveying of one end of the release paper, ensuring stability and accuracy when passing through the drying box and subsequent processes.

[0028] Uniform coating and adjustable thickness: The design of the scraper and its height adjustability ensure that the PU material can be evenly attached to the surface of the release paper, and the thickness of the PU film can be controlled by adjusting the scraper height, which improves the consistency and controllability of product quality.

[0029] Double drying and full coverage: The release paper is double dried in the drying box, which not only ensures the full drying of the PU film, but also achieves simultaneous drying of the PU film on both sides of the release paper through the design of multiple passes through the drying box, thus improving the overall quality and performance of the product.

[0030] Compact structure and easy maintenance: The entire equipment has a compact structure, reasonable design, and close coordination between components, which not only saves space, but also facilitates daily maintenance and overhaul, thereby reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the main structure of a PU film coating device proposed by the present invention;

[0032] Figure 2 A schematic diagram of the three-dimensional structure of a PU film coating device proposed by the present invention;

[0033] Figure 3 A schematic diagram of the three-dimensional structure of a servo motor and a baffle in a PU film coating device proposed by the present invention;

[0034] Figure 4 This is a schematic diagram of the three-dimensional structure of a drying box in a PU film coating device proposed by the present invention;

[0035] Figure 5 A schematic diagram of the three-dimensional structure of a rectangular frame in a PU film coating device proposed by the present invention;

[0036] Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a rectangular frame in a PU film coating device proposed by the present invention;

[0037] Figure 7 This is a schematic diagram of a three-dimensional cross-sectional structure of a drying box in a PU film coating device proposed by the present invention;

[0038] Figure 8 This is a schematic diagram of the exploded structure of a slider and a clamping block in a PU film coating device proposed by the present invention.

[0039] In the figure: 1. drying box; 2. rectangular frame; 3. side panel No. 1; 4. servo motor; 5. connecting rod No. 1; 6. side panel No. 2; 7. guide roller; 9. release paper; 10. inflatable shaft; 11. baffle; 12. rectangular sleeve; 13. rectangular inner plate; 14. spring No. 1; 15. rectangular hole; 16. hand wheel; 17. connecting rod No. 2; 18. threaded groove; 19. bolt; 20. scraper; 21. strip groove; 22. spring No. 2; 23. strip cavity; 24. pressure plate; 25. screw rod; 26. slide groove; 27. give way groove; 28. slider; 29. ​​connecting plate; 30. clamping block; 31. vertical groove; 32. spring No. 3; 33. bump. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Example 1

[0042] Reference Figure 1-8 A PU film coating device, which is used in the field of PU film, includes: a drying box 1 and a release paper 9, one side of the drying box 1 is fixedly connected to a No. 1 connecting rod 5, one end of the No. 1 connecting rod 5 is fixedly connected to a No. 1 side plate 3, one side of the No. 1 side plate 3 is rotatably connected to two symmetrically arranged inflatable shafts 10, the release paper 9 is wound around the inflatable shaft 10, two symmetrically arranged rectangular holes 15 are opened on both sides of the drying box 1, the release paper 9 passes through the rectangular holes 15, one side of the No. 1 side plate 3 is fixedly connected to a servo motor 4, the output shaft of the servo motor 4 is fixedly connected to one end of one of the inflatable shafts 10, one side of the drying box 1 is provided with a blocking component for blocking the two inflatable shafts 10, the blocking component includes a fixed A rectangular inner plate 13 is fixedly connected to one side of the drying box 1, and a rectangular sleeve plate 12 is slidably sleeved on the outer wall of the rectangular inner plate 13. A same No. 1 spring 14 is fixedly connected between the inner wall of one side of the rectangular sleeve plate 12 and one end of the rectangular inner plate 13. A baffle 11 is fixedly connected to one end of the rectangular sleeve plate 12. The baffle 11 conflicts with one end of the air shaft 10. The baffle 11 is first pushed laterally, and the baffle 11 drives the rectangular sleeve plate 12 to move laterally toward the direction of the rectangular inner plate 13 and squeeze the No. 1 spring 14. The reel with the release paper 9 is sleeved on the air shaft 10 below, and then the winding roller is sleeved on the air shaft 10 above. After the baffle 11 is released, the baffle 11 moves to one end of the two air shafts 10 again for blocking.

[0043] Two symmetrically arranged No. 2 connecting rods 17 are fixedly connected on both sides of the drying box 1, and one end of the two No. 2 connecting rods 17 located on the same side is fixedly connected to the same rectangular frame 2. A coating component for coating PU material is arranged inside the rectangular frame 2, and the coating component includes two strip grooves 21 opened on both sides of the bottom of the rectangular frame 2, and a plurality of thread grooves 18 are opened on one side of the rectangular frame 2. The plurality of thread grooves 18 are divided into two groups and are respectively opened on both sides of the rectangular frame 2. A scraper 20 is arranged on one side of the rectangular frame 2, and the internal threads of the scraper 20 are penetrated by two symmetrically arranged bolts 19, and the bolts 19 are threadedly connected to the thread grooves 18. A strip cavity 23 is opened on the top inner wall of one of the strip grooves 21, and a pressure plate 24 is slidably penetrated inside the strip cavity 23, and two symmetrically arranged No. 2 springs 22 are fixedly connected between the top of the pressure plate 24 and the top inner wall of the strip cavity 23, and one side of the pressure plate 24 is an arc shaped setting, at this time, PU material is put into the rectangular frame 2 on both sides, at this time, the PU material can be attached to the surface of the release paper 9, and the scraper 20 can scrape off the excess material to ensure that the PU material is uniform. At this time, the surface of the release paper 9 can be pressed against the pressure plate 24 to prevent the material from flowing out. The scraper 20 is fixed to one side of the rectangular frame 2 by the bolt 19, and the bolt 19 can be installed in the thread groove 18 at different heights, so that the height of the scraper 20 can be adjusted to change the thickness of the PU film. At this time, the upper surface of the release paper 9 is attached with the PU film and enters the interior of the drying box 1. The multiple heating tubes in the drying box 1 are started to dry the PU film. After the release paper 9 is turned around by the guide roller 7, it can enter again through the other side of the drying box 1, so that both sides of the release paper 9 are attached with the PU film. At this time, it can be dried again through the drying box 1, and then the winding process is completed, which is convenient to use;

[0044] Two symmetrically arranged slide grooves 26 are provided on the inner walls on both sides of the drying box 1. A slider 28 is slidably connected inside the slide groove 26. A clamping assembly for clamping the release paper 9 is provided on one side of the slider 28. The clamping assembly includes a vertical groove 31 provided on one side of the slider 28. Two symmetrically arranged protrusions 33 are slidably penetrated inside the vertical groove 31. A same No. 3 spring 32 is fixedly connected between the two protrusions 33. A clamping block 30 is fixedly connected to one side of the protrusion 33. Two symmetrically arranged yielding grooves 27 are provided on the top inner wall and the bottom inner wall of the slide groove 26. The two yielding grooves 27 are provided at both ends of the slide groove 26. One end of the protrusion 33 extends to the inside of the yielding groove 27. A same connecting plate 29 is fixedly connected between the two sliders 28 on the same side. When one end of the release paper 9 passes through the drying box 1 again, one end of the release paper 9 can be placed between multiple clamping blocks 30. At this time, the hand wheel 16 is turned, and the hand wheel 16 drives the screw rod 25 to rotate, and the screw rod 25 drives the slider 28 to move horizontally, and the slider 28 drives the clamping blocks 30 on both sides to move horizontally. At this time, the protrusion 33 moves out from the inside of the give way groove 27 to the inside of the slide groove 26. At this time, the two protrusions 33 squeeze the No. 3 spring 32 and drive the two clamping blocks 30 to approach each other. The two clamping blocks 30 clamp the release paper 9 and then move until the release paper 9 moves to the other end of the drying box 1. At this time, after the release paper 9 is passed around the two guide rollers 7 in turn, the above operation is used to pass the release paper 9 through the drying box 1 from the top of the drying box 1 again, and it is wound on the winding roller for winding.

[0045] A process for PU film coating equipment specifically comprises the following steps:

[0046] S1, preparation stage: the release paper 9 reel is sleeved on the lower air shaft 10, the winding roller is sleeved on the upper air shaft 10, and fixed by the baffle 11;

[0047] S2, clamping and conveying: clamp one end of the release paper 9 by the clamping block 30, and drive the release paper 9 through the drying box 1 and around the guide roller 7 through the screw rod 25 and the slider 28 to achieve preliminary conveying;

[0048] S3, coating and leveling: put the PU material into the rectangular frame 2, evenly coat it on the surface of the release paper 9 by the scraper 20, and scrape off the excess material to ensure that the thickness of the PU film is uniform;

[0049] S4, drying process: start the heating tube in the drying box 1 to dry the PU film on the release paper 9, then turn the direction through the guide roller 7 and enter the drying box 1 again for secondary drying to ensure that both sides are dried thoroughly;

[0050] S5, winding is completed: the dried release paper 9 is wound on a winding roller for winding, completing the entire production process.

[0051] Example 2

[0052] refer to Figure 1-8 , improved on the basis of Example 1: a same screw rod 25 is rotatably connected between the inner walls on both sides of one of the slide grooves 26, one end of the screw rod 25 rotates through the drying box 1 and is fixedly connected to the hand wheel 16, the screw rod 25 threadably penetrates the slider 28, one side of the drying box 1 is fixedly connected with two symmetrically arranged No. 2 side panels 6, two symmetrically arranged guide rollers 7 are rotatably connected between the two No. 2 side panels 6, and a plurality of heating tubes are arranged inside the drying box 1.

[0053] However, as is well known to those skilled in the art, the working principle and wiring method of the servo motor 4 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A PU film coating device, characterized in that: include: A drying box (1) and a release paper (9), one side of the drying box (1) is fixedly connected to a No. 1 connecting rod (5), one end of the No. 1 connecting rod (5) is fixedly connected to a No. 1 side plate (3), one side of the No. 1 side plate (3) is rotatably connected to two symmetrically arranged inflatable shafts (10), the release paper (9) is wound around the inflatable shafts (10), two symmetrically arranged rectangular holes (15) are opened on both sides of the drying box (1), the release paper (9) passes through the rectangular holes (15), one side of the No. 1 side plate (3) is fixedly connected to a servo motor (4), the output shaft of the servo motor (4) is fixedly connected to one end of one of the inflatable shafts (10), and one side of the drying box (1) is provided with a blocking component for blocking the two inflatable shafts (10); Two symmetrically arranged No. 2 connecting rods (17) are fixedly connected to both sides of the drying box (1); one end of the two No. 2 connecting rods (17) located on the same side is fixedly connected to the same rectangular frame (2); a coating component for coating PU material is arranged inside the rectangular frame (2); Two symmetrically arranged slide grooves (26) are provided on the inner walls on both sides of the drying box (1), and a slider (28) is slidably connected inside the slide groove (26), and a clamping component for clamping the release paper (9) is provided on one side of the slider (28).

2. A PU film coating device according to claim 1, characterized in that: The blocking component comprises a rectangular inner plate (13) fixedly connected to one side of the drying box (1); the outer wall of the rectangular inner plate (13) is slidably sleeved with a rectangular sleeve plate (12); a same No. 1 spring (14) is fixedly connected between the inner wall of one side of the rectangular sleeve plate (12) and one end of the rectangular inner plate (13); one end of the rectangular sleeve plate (12) is fixedly connected to a baffle plate (11); the baffle plate (11) is in contact with one end of the inflatable shaft (10).

3. A PU film coating device according to claim 1, characterized in that: The coating assembly comprises two strip grooves (21) opened on both sides of the bottom of a rectangular frame (2); a plurality of thread grooves (18) are opened on one side of the rectangular frame (2); the plurality of thread grooves (18) are divided into two groups and opened on both sides of the rectangular frame (2); and a scraper (20) is arranged on one side of the rectangular frame (2).

4. A PU film coating device according to claim 3, characterized in that: The coating assembly further comprises two symmetrically arranged bolts (19) through which the internal threads of the scraper (20) pass, and the bolts (19) are threadedly connected to the thread groove (18).

5. A PU film coating device according to claim 4, characterized in that: A strip cavity (23) is provided on the top inner wall of one of the strip grooves (21), a pressure plate (24) is slidably penetrated inside the strip cavity (23), two No. 2 springs (22) are symmetrically arranged and fixedly connected between the top of the pressure plate (24) and the top inner wall of the strip cavity (23), and one side of the pressure plate (24) is arranged in an arc shape.

6. A PU film coating device according to claim 1, characterized in that: The clamping assembly comprises a vertical groove (31) provided on one side of the slide block (28), two symmetrically arranged protrusions (33) are slidably penetrated inside the vertical groove (31), a same No. 3 spring (32) is fixedly connected between the two protrusions (33), and a clamping block (30) is fixedly connected to one side of the protrusion (33).

7. A PU film coating device according to claim 6, characterized in that: The clamping assembly further comprises two symmetrically arranged paving grooves (27) which are provided on the top inner wall and the bottom inner wall of the slide groove (26). The two paving grooves (27) are arranged at both ends of the slide groove (26). One end of the protrusion (33) extends into the interior of the paving groove (27). The two sliding blocks (28) located on the same side are fixedly connected with a same connecting plate (29).

8. A PU film coating device according to claim 1, characterized in that: A same screw rod (25) is rotatably connected between the inner walls on both sides of one of the slide grooves (26), one end of the screw rod (25) rotatably passes through the drying box (1) and is fixedly connected to a hand wheel (16), and the screw rod (25) is threadedly passed through the slider (28).

9. A PU film coating device according to claim 1, characterized in that: Two symmetrically arranged No. 2 side panels (6) are fixedly connected to one side of the drying box (1), two symmetrically arranged guide rollers (7) are rotatably connected between the two No. 2 side panels (6), and a plurality of heating tubes are arranged inside the drying box (1).

10. A process for a PU film coating device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1, preparation stage: the release paper (9) reel is sleeved on the lower air shaft (10), the reeling roller is sleeved on the upper air shaft (10), and fixed by a baffle (11); S2, clamping and conveying: using a clamping block (30) to clamp one end of the release paper (9), and driving the screw rod (25) and the slider (28) to pass the release paper (9) through the drying box (1) and around the guide roller (7), thereby achieving preliminary conveying; S3, coating and leveling: Put the PU material into the rectangular frame (2), evenly coat it on the surface of the release paper (9) with a scraper (20), and scrape off the excess material to ensure that the thickness of the PU film is uniform; S4, drying treatment: start the heating tube in the drying box (1) to dry the PU film on the release paper (9), then turn the direction through the guide roller (7) and enter the drying box (1) again for secondary drying to ensure that both sides are dried thoroughly; S5, winding is completed: the dried release paper (9) is wound on a winding roller for winding, completing the entire production process.

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