A kind of gluing device for protective film production

Abstract

The utility model relates to the field of protective film gluing, put forward a kind of gluing device for protective film production, it include: support leg, the top of support leg is fixedly connected with support mesa, the top of support mesa is fixedly connected with connecting seat, the top of connecting seat is fixedly connected with glue storage tank, the bottom of support mesa is fixedly connected with recovery tank, the top of support mesa is provided with even reapplication device;Even reapplication device includes support plate, the side of support plate is fixedly connected in the side of connecting seat, the utility model is transferred to subsequent process by the reapplication roller surface of first spraying glue liquid in the even reapplication device to the roll body rolling, it is even reapplication to protective film secondary, compared with directly spraying to film surface, can be pre-optimized glue liquid distribution by the flow guide groove of reapplication roller, and the rolling lamination of roll body and film surface can avoid the impact damage of high-pressure spraying to thin protective film, and more thickness specifications of protective film are adapted.

Description

Technical Field

[0001] This utility model relates to the field of protective film coating, specifically to a coating device for protective film production. Background Technology

[0002] The field of protective film coating is a key area for the deep integration of materials science and industrial applications. Its core lies in providing surface protection, functional enhancement or temporary fixation for various products through the precise application of adhesives.

[0003] Utility model CN221908048U discloses a coating device for protective film production, including a base. A winding mechanism is fixedly installed on the right side of the top of the base, and a guide roller is fixedly installed at the center of the left side of the top of the base. Side plates are fixedly connected to the front and rear ends of the left side of the top of the base, and a top plate is fixedly connected to the top of the side plates. This utility model, by incorporating a first motor, a threaded rod, and a threaded block, facilitates the lifting of the lifting plate, lifting rod, and heating shell. By incorporating a second motor and a blower fan, it facilitates the downward blowing of air from the heating tube and heating wire. This allows the heating mechanism to automatically adjust its operating height after the protective film coating process is completed, preventing overheating and deformation of the protective film, thus reducing the defect rate in protective film production. It achieves the advantage of automatically adjusting the heating height to prevent overheating and deformation of the protective film.

[0004] In the above application, if the adhesive coating is uneven after the protective film is processed, it will result in local adhesive layers that are too thick. The excess adhesive cannot form an effective bonding layer and will eventually be cut and scrapped along with the defective products. As for the problem of the protective film being too thin, the entire protective film cannot meet the basic bonding requirements. Therefore, we propose an adhesive coating device for the production of protective film. Utility Model Content

[0005] This utility model proposes an adhesive coating device for the production of protective films.

[0006] The technical solution of this utility model is as follows: A coating device for producing protective film includes: a support leg, a support platform fixedly connected to the top of the support leg, a connecting seat fixedly connected to the top of the support platform, a glue storage box fixedly connected to the top of the connecting seat, a recycling box fixedly connected to the bottom of the support platform, and a uniform wiping device provided on the top of the support platform.

[0007] The uniform troweling device includes a support plate, the side of which is fixedly connected to the side of a connecting seat. A motor is fixedly connected to the side of the support plate, and a connecting shaft is fixedly connected to the output shaft of the motor. A troweling roller is fixedly connected to the end of the connecting shaft away from the motor, and a drive gear is fixedly connected to the end of the troweling roller away from the connecting shaft. A rotating rod is rotatably connected to the side of the connecting seat, and a tightening roller is fixedly connected to the circumferential surface of the rotating rod. A first pulley is fixedly connected to the circumferential surface of the rotating rod.

[0008] One end of the rotating rod passes through and is rotatably connected to the side of the connecting seat, and a guide groove is provided on the circumferential surface of the re-applying roller. The rotating rod passes through and is rotatably connected to the connecting seat to ensure stable rotation of the tightening roller. The guide groove on the circumferential surface of the re-applying roller can guide the flow of adhesive, avoid local accumulation, and further improve the uniformity of adhesive application. Excess adhesive will flow back into the recycling bin, effectively reducing adhesive waste and improving resource utilization.

[0009] A driven gear is fixedly connected to one end of the rotating rod that passes through and is rotatably connected. The driving gear meshes with the driven gear for transmission. The meshing transmission between the driving gear and the driven gear enables the wiping roller and the tightening roller to operate synchronously, ensuring that the protective film conveying speed matches the adhesive application rhythm and reducing adhesive layer stretching or wrinkling.

[0010] A spraying box is fixedly connected to the top of the connecting base, and a spraying block is fixedly connected to the side of the spraying box. A connecting pipe runs through the side of the spraying box, with the end of the connecting pipe away from the spraying box passing through the side of the glue storage tank. The spraying box is connected to the glue storage tank through the connecting pipe to achieve a stable supply of glue. The spraying block can accurately spray glue onto the surface of the protective film a second time, forming a dual function of spraying and wiping in conjunction with the subsequent wiping roller, thus improving the glue application accuracy.

[0011] The recycling bin is equipped with an adhesive recycling device, which includes a reciprocating screw. The circumferential surface of the reciprocating screw passes through and is rotatably connected to the side of the recycling bin. One end of the reciprocating screw is fixedly connected to a second pulley, and the other end of the reciprocating screw is rotatably connected to the inner wall of the recycling bin. A fixing sleeve is threaded onto the circumferential surface of the reciprocating screw. A belt is provided on the circumferential surface of the second pulley. A pusher plate is engaged at the bottom of the fixing sleeve. A limit rod is fixedly connected to the inner wall of the recycling bin, and a sliding sleeve is fixedly connected to the top of the pusher plate.

[0012] The circumferential surface of the limiting rod is slidably connected to the inner wall of the sliding sleeve, and the second pulley is connected to the first pulley via a belt. The slidable connection between the limiting rod and the sliding sleeve restricts the displacement of the liquid pushing plate and ensures the stability of the recovery. The second pulley is connected to the first pulley via a belt, allowing the recovery device and the uniform wiping device to share a power source, thus saving energy.

[0013] The push plate has flow holes on its side, and the inner bottom wall of the recycling box is located on the displacement trajectory of the push plate. The inner bottom wall of the recycling box also has a flow channel. The flow holes on the side of the push plate reduce the resistance to pushing the adhesive, and the flow channel on the inner bottom wall of the recycling box facilitates the discharge and reuse of the collected adhesive, further improving resource utilization.

[0014] A lifting rod is slidably connected to the side of the connecting seat, and a glue applicator is fixedly connected to the side of the lifting rod. A liquid filling port is fixedly connected to the top of the glue storage tank. The lifting rod is slidably connected to the connecting seat, allowing the height of the glue applicator to be adjusted to accommodate protective films of different thicknesses, enhancing the versatility of the device. The liquid filling port facilitates the replenishment of glue to the storage tank, improving operational convenience.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses a spraying block in a uniform re-coating device to spray adhesive onto the surface of the re-coating roller, and then the roller body rolls and transfers the protective film to the subsequent process, thus uniformly coating the protective film a second time. Compared with direct spraying onto the film surface, the adhesive distribution can be pre-optimized through the guide groove of the re-coating roller, and the rolling and bonding of the roller body with the film surface can avoid the impact damage of high-pressure spraying to the thin protective film, and it can adapt to more thicknesses of protective film.

[0017] 2. This utility model uses a reciprocating screw in the adhesive recovery device to drive the pusher plate to perform a full-stroke reciprocating motion, which can cover the entire area of ​​the bottom wall inside the recovery box. Compared with traditional static recovery, the adhesive recovery rate is greatly improved. The flow hole design on the side of the pusher plate avoids excessive resistance to adhesive pushing and prevents adhesive residue, further improving the recovery efficiency.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a structural schematic diagram of the overall appearance of this utility model;

[0021] Figure 2 This is a schematic diagram of the adhesive applicator of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the practical uniform troweling device;

[0023] Figure 4 This is a schematic diagram of the structure of the practical adhesive recovery device;

[0024] Figure 5 This utility model Figure 4A three-dimensional magnified structural diagram of A.

[0025] In the diagram: 1. Support leg; 2. Support platform; 3. Connecting seat; 4. Glue storage tank; 5. Evenly spreading device; 6. Glue recovery device; 8. Glue applicator; 9. Lifting rod; 10. Recovery box; 11. Liquid filling port; 51. Support plate; 52. Motor; 53. Connecting shaft; 54. Spreading roller; 55. Drive gear; 56. Rotating rod; 57. Tightening roller; 58. First pulley; 59. Driven gear; 510. Spraying box; 511. Spraying block; 512. Connecting pipe; 61. Reciprocating screw; 62. Second pulley; 63. Fixing sleeve; 64. Belt; 65. Push plate; 66. Limiting rod; 67. Sliding sleeve. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1

[0028] like Figures 1-5 As shown, this embodiment proposes an adhesive coating device for protective film production, including: a support leg 1, a support platform 2 fixedly connected to the top of the support leg 1, a connecting seat 3 fixedly connected to the top of the support platform 2, an adhesive storage box 4 fixedly connected to the top of the connecting seat 3, a recycling box 10 fixedly connected to the bottom of the support platform 2, and a uniform wiping device 5 provided on the top of the support platform 2.

[0029] The uniform troweling device 5 includes a support plate 51, the side of the support plate 51 is fixedly connected to the side of the connecting seat 3, a motor 52 is fixedly connected to the side of the support plate 51, the output shaft of the motor 52 is fixedly connected to a connecting shaft 53, a troweling roller 54 is fixedly connected to the end of the connecting shaft 53 away from the motor 52, a drive gear 55 is fixedly connected to the end of the troweling roller 54 away from the connecting shaft 53, a rotating rod 56 is rotatably connected to the side of the connecting seat 3, a tightening roller 57 is fixedly connected to the circumferential surface of the rotating rod 56, and a first pulley 58 is fixedly connected to the circumferential surface of the rotating rod 56.

[0030] One end of the rotating rod 56 passes through and is rotatably connected to the side of the connecting seat 3, and a guide groove is provided on the circumferential surface of the re-applying roller 54. The rotating rod 56 passes through and is rotatably connected to the connecting seat 3 to ensure the stable rotation of the tightening roller 57. The guide groove on the circumferential surface of the re-applying roller 54 can guide the flow of adhesive liquid, avoid local accumulation, and further improve the uniformity of adhesive application. Excess adhesive liquid will flow back into the recycling bin 10, effectively reducing adhesive liquid waste and improving resource utilization.

[0031] A driven gear 59 is fixedly connected to one end of the rotating rod 56 that is rotatably connected. The driving gear 55 meshes with the driven gear 59 for transmission. The meshing of the driving gear 55 and the driven gear 59 causes the wiping roller 54 and the tightening roller 57 to operate synchronously, ensuring that the protective film conveying speed matches the adhesive application rhythm and reducing adhesive layer stretching or wrinkling.

[0032] A spraying box 510 is fixedly connected to the top of the connecting seat 3. A spraying block 511 is fixedly connected to the side of the spraying box 510. A connecting pipe 512 passes through the side of the spraying box 510, and the end of the connecting pipe 512 away from the spraying box 510 passes through the side of the glue storage tank 4. The spraying box 510 is connected to the glue storage tank 4 through the connecting pipe 512 to achieve a stable supply of glue. The spraying block 511 can accurately spray glue onto the surface of the protective film a second time. Together with the subsequent wiping roller 54, it forms a dual function of spraying and wiping, improving the glue application accuracy.

[0033] In this embodiment, the worker places the protective film to be coated onto the support platform 2 through the entrance channel. The glue applicator 8, fixed to the lifting rod 9, then enters the working state, matching the height of the protective film. Subsequently, the protective film is wound between the wiping roller 54 and the tightening roller 57. As the protective film moves, the glue applicator 8 completes one coat. Then, the motor 52 is powered on and its output shaft drives the fixedly connected connecting shaft 53 to rotate. The wiping roller 54, which is fixed to the connecting shaft 53, rotates synchronously. At the same time, the driving gear 55 at the other end of the wiping roller 54 drives the meshing driven gear 59, causing the rotating rod 56 and the tightening roller 57 on the circumference of the rotating rod 56 to rotate synchronously. The support plate 51, fixed to the side of the connecting seat 3, provides stable support for the motor 52 and the connecting shaft 53, preventing the components from shaking. After the spray box 510 obtains glue from the glue storage tank 4 through the connecting pipe 512, it controls the spray block 511 to spray the rotating... The surface of the re-applying roller 54 is precisely sprayed with adhesive. After the first application of adhesive, the protective film is wound upward from the bottom of the re-applying roller 54 and comes into close contact with the area on the surface of the re-applying roller 54 where the adhesive is already evenly distributed. As the re-applying roller 54 continues to rotate, the adhesive on the roller surface is completely transferred to the surface of the protective film, completing the second uniform application. At the same time, the protective film continues to move backward and eventually wraps around the top of the tightening roller 57. The tightening roller 57 keeps the protective film in a flat and taut state through rotational tension, ensuring the adhesion between the protective film and the re-applying roller 54 and avoiding uneven transfer of adhesive layer due to loose film surface. The first pulley 58 on the rotating rod 56 rotates with the rotating rod 56 and drives the second pulley 62 of the adhesive recovery device 6 through the belt 64, preparing for the subsequent adhesive recovery device 6. A small amount of excess adhesive that is not completely transferred from the surface of the re-applying roller 54 will be guided by the guide groove to the recovery box 10 below the roller as the roller rotates.

[0034] Example 2

[0035] like Figures 1-5As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes that the recycling bin 10 is provided with an adhesive recycling device 6 inside. The adhesive recycling device 6 includes a reciprocating screw 61, the circumferential surface of the reciprocating screw 61 is rotatably connected to the side of the recycling bin 10, one end of the reciprocating screw 61 is fixedly connected to a second pulley 62, the other end of the reciprocating screw 61 is rotatably connected to the inner wall of the recycling bin 10, the circumferential surface of the reciprocating screw 61 is threadedly connected to a fixing sleeve 63, the circumferential surface of the second pulley 62 is provided with a belt 64, the bottom of the fixing sleeve 63 is engaged with a pusher plate 65, the inner wall of the recycling bin 10 is fixedly connected to a limit rod 66, and the top of the pusher plate 65 is fixedly connected to a sliding sleeve 67.

[0036] The circumferential surface of the limiting rod 66 is slidably connected to the inner wall of the sliding sleeve 67, and the second pulley 62 is driven by the first pulley 58 through the belt 64. The slidable connection between the limiting rod 66 and the sliding sleeve 67 restricts the displacement of the liquid pushing plate 65 and ensures the stability of the recovery. The second pulley 62 is driven by the first pulley 58 through the belt 64, so that the recovery device and the uniform wiping device 5 share the same power source, saving energy consumption.

[0037] The side of the push plate 65 has flow holes, and the inner bottom wall of the recovery box 10 is located on the displacement trajectory of the push plate 65. The inner bottom wall of the recovery box 10 has a flow channel. The flow holes on the side of the push plate 65 can reduce the resistance of the adhesive pushing, and the flow channel on the inner bottom wall of the recovery box 10 facilitates the discharge and reuse of the collected adhesive, further improving resource utilization.

[0038] A lifting rod 9 is slidably connected to the side of the connecting seat 3, and a glue applicator 8 is fixedly connected to the side of the lifting rod 9. A liquid filling port 11 is fixedly connected to the top of the glue storage tank 4. The lifting rod 9 is slidably connected to the connecting seat 3, which allows the height of the glue applicator 8 to be adjusted to accommodate protective films of different thicknesses, enhancing the versatility of the device. The liquid filling port 11 facilitates the replenishment of glue to the glue storage tank 4, improving the ease of operation.

[0039] In this embodiment, when the uniform application device 5 is running, the first pulley 58 on the circumferential surface of the rotating rod 56 rotates synchronously with the rotating rod 56, driving the second pulley 62 of the adhesive recovery device 6 to rotate via the belt 64. Since the second pulley 62 is fixedly connected to the reciprocating screw 61, the reciprocating screw 61 rotates stably between the side and inner wall of the recovery box 10, realizing the linkage transmission of power from the uniform application device 5 to the adhesive recovery device 6. When the reciprocating screw 61 rotates, the fixed sleeve 63 connected by its circumferential thread makes a reciprocating linear motion along the screw axis. Due to the spiral groove design of the reciprocating screw 61, automatic switching between forward and reverse directions can be realized. The push plate 65, which is engaged at the bottom of the fixed sleeve 63, moves with the fixed sleeve 63. Simultaneously, the sliding sleeve 67 on the top of the push plate 65 slides along the limiting rod 66 fixed to the inner wall of the recycling tank 10. The cooperation between the limiting rod 66 and the sliding sleeve 67 restricts the rotational freedom of the push plate 65, ensuring that it only moves back and forth in a straight line and avoids deviation. The excess glue dripping after the second application by the wiping roller 54 and the glue residue on the support table 2 flow into the recycling tank 10 and disperse at the bottom of the tank. When the push plate 65 reciprocates, the flow holes on its side can reduce the glue resistance and prevent the glue from being pushed and splashing. At the same time, it concentrates the dispersed glue towards the flow channel on the inner bottom wall of the recycling tank 10. Finally, the concentrated glue is discharged to the external recycling filter container through the flow channel to realize the reuse of glue.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A coating apparatus for producing protective films, characterized in that, include: Support leg (1), the top of the support leg (1) is fixedly connected to a support platform (2), the top of the support platform (2) is fixedly connected to a connecting seat (3), the top of the connecting seat (3) is fixedly connected to a glue storage box (4), the bottom of the support platform (2) is fixedly connected to a recycling box (10), and the top of the support platform (2) is provided with a uniform wiping device (5). The uniform wiping device (5) includes a support plate (51), the side of the support plate (51) is fixedly connected to the side of the connecting seat (3), a motor (52) is fixedly connected to the side of the support plate (51), the output shaft of the motor (52) is fixedly connected to a connecting shaft (53), a wiping roller (54) is fixedly connected to the end of the connecting shaft (53) away from the motor (52), a drive gear (55) is fixedly connected to the end of the wiping roller (54) away from the connecting shaft (53), a rotating rod (56) is rotatably connected to the side of the connecting seat (3), a tightening roller (57) is fixedly connected to the circumferential surface of the rotating rod (56), and a first pulley (58) is fixedly connected to the circumferential surface of the rotating rod (56).

2. The adhesive coating apparatus for producing a protective film according to claim 1, characterized in that, One end of the rotating rod (56) is rotatably connected to the side of the connecting seat (3), and the circumferential surface of the wiping roller (54) is provided with a guide groove.

3. The adhesive coating apparatus for producing a protective film according to claim 2, characterized in that, The driven gear (59) is fixedly connected to one end of the rotating rod (56) that is rotatably connected, and the driving gear (55) meshes with the driven gear (59) for transmission.

4. The adhesive coating apparatus for producing a protective film according to claim 3, characterized in that, The top of the connecting seat (3) is fixedly connected to a spray box (510), the side of the spray box (510) is fixedly connected to a spray block (511), the side of the spray box (510) is connected to a connecting pipe (512), and the end of the connecting pipe (512) away from the spray box (510) passes through the side of the glue storage box (4).

5. The adhesive coating apparatus for producing a protective film according to claim 4, characterized in that, The recycling bin (10) is equipped with an adhesive recycling device (6). The adhesive recycling device (6) includes a reciprocating screw (61). The circumferential surface of the reciprocating screw (61) is rotatably connected to the side of the recycling bin (10). One end of the reciprocating screw (61) is fixedly connected to a second pulley (62). The other end of the reciprocating screw (61) is rotatably connected to the inner wall of the recycling bin (10). The circumferential surface of the reciprocating screw (61) is threadedly connected to a fixing sleeve (63). The circumferential surface of the second pulley (62) is provided with a belt (64). The bottom of the fixing sleeve (63) is engaged with a pusher plate (65). The inner wall of the recycling bin (10) is fixedly connected to a limit rod (66). The top of the pusher plate (65) is fixedly connected to a sliding sleeve (67).

6. The adhesive coating apparatus for producing a protective film according to claim 5, characterized in that, The circumferential surface of the limiting rod (66) is slidably connected to the inner wall of the sliding sleeve (67), and the second pulley (62) is connected to the first pulley (58) via the belt (64).

7. The adhesive coating apparatus for producing a protective film according to claim 6, characterized in that, The side of the liquid pusher plate (65) is provided with flow holes, the inner bottom wall of the recovery box (10) is located on the displacement trajectory of the liquid pusher plate (65), and the inner bottom wall of the recovery box (10) is provided with a liquid flow channel.

8. The adhesive coating apparatus for producing a protective film according to claim 7, characterized in that, The side of the connecting seat (3) is slidably connected to a lifting rod (9), the side of the lifting rod (9) is fixedly connected to a glue applicator (8), and the top of the glue storage tank (4) is fixedly connected to a liquid inlet (11).

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