Film falling prevention device for automatic EVA (Ethylene Vinyl Acetate) adhesive film winding machine

Abstract

The utility model discloses a film falling prevention device for an automatic EVA (Ethylene Vinyl Acetate) adhesive film winding machine, and relates to the technical field of adhesive film production. Comprising a packaging frame, a winding shaft and a mounting plate, a connecting plate is fixedly connected to the rear side wall of the mounting plate, the mounting plate is fixedly connected with the packaging frame through the connecting plate, a shaft sleeve is fixedly connected to the front side wall of the mounting plate, and a limiting shaft is slidably connected to the inner wall of the shaft sleeve. When an employee needs to sample, the handle is pulled backwards to the bottom and then rotated leftwards, so that the cylindrical pin slides into the limiting groove for limiting, the latch and the gear teeth of the locking wheel are kept in a separated state, the employee can sample according to needs at the moment, and after sampling is completed, the handle is rotated rightwards, so that the latch continues to clamp the locking wheel; when a worker needs to conduct packaging and winding, the adhesive film can be pushed to continue to conduct packaging work, the problem that the finished adhesive film is not packaged in time after roll changing and is prone to falling to the ground to be polluted is solved, the winding efficiency and quality are improved, and the labor amount of the worker is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to a film-dropping prevention device for an EVA film automatic winding machine. Background Art

[0002] EVA is a thermosetting, adhesive film used to form the center of laminated glass. Due to its superior adhesion, durability, and optical properties, EVA film is increasingly being used in electronic components and various optical products. In the production of EVA film, online winding is a crucial step.

[0003] In the currently used automatic winding system, if the finished product is not packaged in time after the roll is changed and falls on the packaging rack, the film will rotate due to the offset of the center of gravity, causing the tail of the film to fall to the ground and be contaminated. In addition, the winding shaft is usually pulled manually to pull the winding shaft bearing out of the packaging rack track. When the winding shaft carries a heavy finished product film, it is easy to cause the winding shaft to deform or be damaged, resulting in problems such as wrinkles during the winding process, reducing the efficiency and quality of the winding.

[0004] Therefore, a device for preventing film from falling off for an automatic EVA film winding machine is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-film-dropping device for an EVA film automatic winding machine, which solves the technical problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a film-falling prevention device for an automatic EVA film winding machine, comprising a packing frame, a winding shaft and a mounting plate, the rear side wall of the mounting plate being fixedly connected to a connecting plate, the mounting plate being fixedly connected to the packing frame through the connecting plate, the front side wall of the mounting plate being fixedly connected to a shaft sleeve, the inner wall of the shaft sleeve being slidably connected to a limiting shaft, the rear end of the limiting shaft passing through the mounting plate being fixedly connected to a latching tooth, the outer wall of the winding shaft being fixedly connected to a locking wheel, the limiting shaft being latched to the locking wheel through the latching tooth.

[0007] Preferably, a limiting groove is provided on the side wall of the sleeve, a sliding groove is provided on the rear inner wall of the limiting groove, a cylindrical pin is provided on the inner side of the sliding groove, a threaded hole is provided on the limiting shaft, and the lower end of the cylindrical pin is threadedly connected to the threaded hole.

[0008] Preferably, a spring is sleeved on the limiting shaft, the spring is located inside the shaft sleeve, and the front end of the limiting shaft is fixedly connected to a handle.

[0009] Preferably, the locking wheel includes a wheel ring and gear teeth, a locking groove is provided on the gear teeth, and the gear teeth are engaged with the locking groove.

[0010] Preferably, a first fixing hole is provided on the mounting plate, and a second fixing hole and a third fixing hole are provided on the connecting plate.

[0011] Preferably, a strip groove is provided at the top end of the cylindrical pin.

[0012] Compared with the related art, the anti-film-dropping device for an EVA film automatic winding machine provided by the present invention has the following beneficial effects:

[0013] 1. The utility model provides an anti-film-dropping device for an automatic EVA film winding machine. When an employee needs to take a sample, he pulls the handle backward, pulls it to the bottom and then rotates it to the left, so that the cylindrical pin slides into the limit groove for limiting, keeping the latching teeth and the gear teeth of the locking wheel in a separated state. At this time, the employee can take a sample as needed. After the sampling is completed, the handle is rotated to the right to allow the latching teeth to continue to clamp the locking wheel. When the employee needs to pack and wind, he pushes the film to continue the packing work, which solves the problem that the tail of the finished film falls to the ground and is contaminated due to untimely packing after the roll is changed, reduces the probability of damage to the reel, improves the efficiency and quality of winding, and reduces the workload of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the shaft sleeve of the utility model;

[0016] Figure 3 For the utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 For the utility model Figure 2 Enlarged view of point B in the middle.

[0018] In the figure: 1. Mounting plate; 11. First fixing hole; 12. Connecting plate; 13. Second fixing hole; 14. Third fixing hole; 2. Bushing; 21. Limiting shaft; 22. Clamping teeth; 23. Slide groove; 24. Cylindrical pin; 25. Spring; 26. Limiting groove; 27. Handle; 28. Clamping groove; 3. Reeling shaft; 4. Locking wheel; 41. Wheel ring; 42. Gear teeth; 5. Packing rack. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Example:

[0021] See also Figures 1-4 The utility model provides a technical solution: an anti-film-dropping device for an automatic EVA film winding machine, comprising a packing frame 5, a winding shaft 3 and a mounting plate 1. The rear side wall of the mounting plate 1 is fixedly connected with a connecting plate 12, and the mounting plate 1 is fixedly connected to the packing frame 5 through the connecting plate 12. The front side wall of the mounting plate 1 is fixedly connected with a shaft sleeve 2, and the inner wall of the shaft sleeve 2 is slidably connected with a limiting shaft 21. The rear end of the limiting shaft 21 passes through the mounting plate 1 and is fixedly connected with a locking tooth 22. The outer wall of the winding shaft 3 is fixedly connected with a locking wheel 4, and the limiting shaft 21 is clamped with the locking wheel 4 through the locking tooth 22.

[0022] The mounting plate 1 is fixed to the packing frame 5 of the winding machine by bolts or welding. The stability of the anti-film falling device is ensured by fixing the mounting plate 1 and the connecting plate 12 at multiple locations. A through hole is opened on the mounting plate 1 for installing the shaft sleeve 2. The shaft sleeve 2 has a built-in spring 25. The spring 25 is set on the limit shaft 21 to give the limit shaft 21 a backward thrust. The tail end of the limit shaft 21 is fixed with a tooth 22. The inner side of the tooth 22 is provided with a slot 28. The inner tooth surface of the slot 28 is composed of a 30° inclined surface and a water It is composed of a plane and is matched with the locking wheel 4. The tooth surface of the gear tooth 42 of the locking wheel 4 is composed of a 30° inclined surface and a horizontal surface. The horizontal surface of the gear tooth 42 is tightly fitted with the horizontal surface of the card slot 28 and cannot rotate reversely. Through the cooperation of the card tooth 22 and the locking wheel 4, on the one hand, it can prevent the winding shaft 3 from reversely rotating and shedding the film, and can retain the forward rotation function with the cooperation of the spring 25 without affecting the sampling of employees. On the other hand, it can reduce the wear of the tooth surface to a minimum, thereby extending the service life of the card tooth 22 and the locking wheel 4.

[0023] In this embodiment, a limiting groove 26 is provided on the side wall of the sleeve 2, a sliding groove 23 is provided on the inner wall of the rear side of the limiting groove 26, a cylindrical pin 24 is provided on the inner side of the sliding groove 23, a threaded hole is provided on the limiting shaft 21, the lower end of the cylindrical pin 24 is threadedly connected to the threaded hole, a spring 25 is sleeved on the limiting shaft 21, the spring 25 is located inside the sleeve 2, a handle 27 is fixedly connected to the front end of the limiting shaft 21, the locking wheel 4 includes a wheel ring 41 and gear teeth 42, a locking groove 28 is provided on the locking tooth 22, and the gear teeth 42 are engaged with the locking groove 28;

[0024] The cylindrical pin 24 plays a limiting role. A handle 27 is fixed to the front end of the limiting shaft 21. The handle 27 adopts a T-shaped structure, which makes it easier and more labor-saving for employees to pull the limiting shaft 21. When the winding shaft 3 does not need to be clamped, the handle 27 is pulled forward and rotated to the left when it is pulled to the front end of the slide groove 23, so that the cylindrical pin 24 is clamped in the limiting groove 26, keeping the locking teeth 22 and the locking wheel 4 in a separated state. At this time, the winding shaft 3 can be rotated. When the winding shaft 3 needs to be clamped, the handle 27 is rotated to the right to rotate the cylindrical pin 24 out of the limiting groove 26, and then the handle 27 is released. The spring 25 drives the limiting shaft 21 to move backward, so that the locking teeth 22 and the gear teeth 42 of the locking wheel 4 are in a clamping state, and the winding shaft 3 cannot be rotated.

[0025] In this embodiment, a first fixing hole 11 is formed on the mounting plate 1, and a second fixing hole 13 and a third fixing hole 14 are formed on the connecting plate 12. Bolts are inserted into the first fixing hole 11, the second fixing hole 13, and the third fixing hole 14 to fix the mounting plate 1 on the packing frame 5 of the winding machine. The stability of the device is ensured by fixing the mounting plate 1 and the connecting plate 12 at multiple locations.

[0026] In this embodiment, a strip groove is provided at the top of the cylindrical pin 24 , which makes it easy for the user to unscrew the cylindrical pin 24 from the threaded hole with a screwdriver, thereby facilitating the disassembly and assembly of the cylindrical pin 24 .

[0027] After the sampling is completed, the handle 27 is rotated to the right to make the latch gear 22 continue to clamp the locking wheel 4. When the employee needs to wrap and wrap the package, he only needs to gently push the film to make the film rotate forward without affecting the packaging work.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing film from falling off for an automatic EVA film winding machine, comprising a packing frame (5), a winding shaft (3) and a mounting plate (1), characterized in that: The rear side wall of the mounting plate (1) is fixedly connected to a connecting plate (12), the mounting plate (1) is fixedly connected to the packaging frame (5) via the connecting plate (12), the front side wall of the mounting plate (1) is fixedly connected to a shaft sleeve (2), the inner wall of the shaft sleeve (2) is slidably connected to a limiting shaft (21), the rear end of the limiting shaft (21) passes through the mounting plate (1) and is fixedly connected to a latching tooth (22), the outer wall of the reeling shaft (3) is fixedly connected to a locking wheel (4), and the limiting shaft (21) is latched with the locking wheel (4) via the latching tooth (22).

2. The device for preventing film from falling off for an automatic EVA film winding machine according to claim 1, characterized in that: The side wall of the shaft sleeve (2) is provided with a limiting groove (26), the rear inner wall of the limiting groove (26) is provided with a sliding groove (23), the inner side of the sliding groove (23) is provided with a cylindrical pin (24), the limiting shaft (21) is provided with a threaded hole, and the lower end of the cylindrical pin (24) is threadedly connected to the threaded hole.

3. The device for preventing film from falling off for an automatic EVA film winding machine according to claim 1, characterized in that: A spring (25) is sleeved on the limiting shaft (21), and the spring (25) is located inside the shaft sleeve (2). The front end of the limiting shaft (21) is fixedly connected to a handle (27).

4. The device for preventing film from falling off for an automatic EVA film winding machine according to claim 1, characterized in that: The locking wheel (4) comprises a wheel ring (41) and gear teeth (42); a clamping groove (28) is provided on the clamping tooth (22); and the gear teeth (42) are clamped with the clamping groove (28).

5. The device for preventing film from falling off for an automatic EVA film winding machine according to claim 1, characterized in that: The mounting plate (1) is provided with a first fixing hole (11), and the connecting plate (12) is provided with a second fixing hole (13) and a third fixing hole (14).

6. The device for preventing film from falling off for an automatic EVA film winding machine according to claim 2, characterized in that: A strip groove is provided at the top end of the columnar pin (24).

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