Winding equipment for EVA (Ethylene Vinyl Acetate) sheets

Abstract

The utility model discloses EVA (ethylene vinyl acetate) sheet winding equipment, which belongs to the technical field of EVA sheet production and comprises a support chassis, two movable L-shaped plates are mounted on the support chassis through an adjusting support, conical support rollers are rotatably connected onto the two L-shaped plates, a first driving motor is fixedly mounted on one L-shaped plate, and a second driving motor is fixedly mounted on the other L-shaped plate. The output end of the first driving motor penetrates through the L-shaped plates and is fixedly connected with the conical supporting rollers, each L-shaped plate is fixedly connected with a set of hydraulic cylinders, the top ends of each set of hydraulic cylinders are fixedly connected with V-shaped material fixing plates, and the two V-shaped material fixing plates are arranged below the two conical supporting rollers correspondingly; the two V-shaped material fixing plates are jointly provided with a cut-off blade. The adjusting support and the L-shaped plate are used in cooperation, the distance between the two conical supporting rollers can be freely adjusted, and therefore the device can adapt to EVA sheet winding rollers with different widths and diameters, and the universality of the device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of EVA sheet production technology, specifically to a winding device for EVA sheets. Background Technology

[0002] EVA sheet is a plastic material made of ethylene-vinyl acetate copolymer. It has properties such as softness, elasticity, chemical resistance, and UV resistance. It is widely used in footwear, packaging, sporting goods, automotive interiors, and other fields. Its advantages include good cushioning, water resistance, and easy processing. At the same time, it is environmentally friendly and recyclable. The hardness and color of EVA sheet can be adjusted according to needs to adapt to different application scenarios.

[0003] An investigation revealed that a Chinese utility model patent (publication number: CN221916542U) discloses a waterproof display and control instrument, including a worktable. The worktable has an internal winding mechanism, which includes a winding motor. The outer wall of the winding motor is fixedly connected to the outer wall of the worktable. A winding roller is fixedly connected to the output end of the winding motor. Multiple telescopic grooves are formed on the outer wall of the winding roller. Multiple limiting grooves are formed inside the rear side of the winding roller. Telescopic plates are installed inside each of the multiple telescopic grooves. Linkage grooves are formed inside each of the multiple telescopic plates. Linkage rods are installed inside the linkage grooves. One end of each linkage rod is fixedly connected to a limiting block located inside the limiting groove. Multiple rotation grooves are formed on the outer wall of the winding roller. A turntable is fixedly connected to the other end of each linkage rod.

[0004] While the aforementioned patents can be applied to rolls of various sizes, enhancing the applicability of the equipment, eliminating the need to replace or use corresponding rolls, simplifying operation, and improving production efficiency, their adjustment methods and structures are complex, making them inconvenient to use. Furthermore, they lack measures to secure the sheet during the winding process, which can easily lead to loosening of the wound sheet and compromise production quality.

[0005] Therefore, this utility model provides a winding device for EVA sheets to solve the above problems. Utility Model Content

[0006] This invention provides a winding device for EVA sheets, which aims to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an EVA sheet winding device, comprising a support chassis, on which two movable L-shaped plates are mounted via an adjusting bracket. Conical support rollers are rotatably connected to both L-shaped plates. A first drive motor is fixedly mounted on one of the L-shaped plates, the output end of which passes through the L-shaped plate and is fixedly connected to the conical support roller. A set of hydraulic cylinders is fixedly connected to each L-shaped plate, and a V-shaped fixing plate is fixedly connected to the top of each set of hydraulic cylinders. The two V-shaped fixing plates are respectively positioned below the two conical support rollers, and a cutting blade is mounted on both V-shaped fixing plates.

[0008] As a preferred technical solution of this application, the adjusting bracket includes two upright plates fixedly connected to the supporting chassis. A bidirectional threaded rod is rotatably connected to both upright plates. A second drive motor is fixedly installed on one of the upright plates. The output end of the second drive motor is fixedly connected to one end of the bidirectional threaded rod. A threaded cylinder matching the bidirectional threaded rod is embedded in both L-shaped plates. Both L-shaped plates are threadedly connected to the bidirectional threaded rod through the threaded cylinder.

[0009] As a preferred technical solution of this application, each of the conical support rollers is fixedly connected with a set of anti-slip strips.

[0010] As a preferred technical solution of this application, both of the V-shaped fixing plates are equipped with knife holders, the cutting blades are mounted on the two knife holders, and both of the L-shaped plates are provided with openings that match the cutting blades.

[0011] As a preferred technical solution of this application, each of the L-shaped plates has several circular grooves on its bottom surface, and each circular groove is provided with a ball bearing. The supporting chassis has multiple slides that match the ball bearings, and each ball bearing is provided inside the slide.

[0012] As a preferred technical solution of this application, two fixed plates are fixedly connected to the support chassis, and guide rollers are rotatably connected to the two fixed plates.

[0013] As a preferred technical solution of this application, the supporting chassis is provided with a plurality of mounting holes.

[0014] By adjusting the bracket in conjunction with the L-shaped plate, the distance between the two conical support rollers can be freely adjusted to accommodate EVA sheet winding rollers of different widths and diameters. This effectively improves the versatility of the equipment, making it easy to install and use. Its simple structure significantly reduces adjustment time. The V-shaped fixing plate, driven by a hydraulic cylinder, allows for lifting and lowering. After winding, the plate moves to contact the sheet, compacting it and preventing loosening. The cutting blade allows for direct cutting of the sheet during its upward movement after winding, improving production efficiency. Attached Figure Description

[0015] Figure 1 A perspective view of a rewinding device for EVA sheets;

[0016] Figure 2 A side view of an EVA sheet winding device;

[0017] Figure 3 A three-dimensional view of the supporting chassis in an EVA sheet winding device;

[0018] Figure 4 This is a side view of a V-shaped retaining plate in an EVA sheet winding device;

[0019] Figure 5 This is a bottom view of an L-shaped plate in an EVA sheet winding device.

[0020] In the picture:

[0021] 1. Support chassis; 2. L-shaped plate; 3. Vertical plate; 4. Two-way threaded rod; 5. Second drive motor; 6. Conical support roller; 7. First drive motor; 8. Anti-slip strip; 9. Hydraulic cylinder; 10. V-shaped fixing plate; 11. Knife holder; 12. Cutting blade; 13. Through port; 14. Fixing plate; 15. Guide roller; 16. Slide rail; 17. Ball bearing; 18. Mounting hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a winding device for EVA sheets, such as... Figures 1 to 5As shown, the system includes a support chassis 1 with several mounting holes 18. Two movable L-shaped plates 2 are mounted on the support chassis 1 via adjusting brackets. Conical support rollers 6 are rotatably connected to both L-shaped plates 2. A first drive motor 7 is fixedly mounted on one of the L-shaped plates 2, and the output end of the first drive motor 7 passes through the L-shaped plate 2 and is fixedly connected to the conical support roller 6. A set of anti-slip strips 8 are fixedly connected to each conical support roller 6.

[0024] Specifically, the mounting holes 18 on the support chassis 1 are used to securely fix the equipment to the workbench or production line, ensuring the overall stability of the equipment operation. The tapered support roller 6 on the L-shaped plate 2 can be used to fix the winding roller used for winding. With the power of the first drive motor 7, it can be driven to rotate to complete the winding of the EVA sheet.

[0025] The tapered support roller 6's tapered design allows it to better adapt to variations in sheet diameter, preventing sheet shifting during winding. The anti-slip strips 8 increase friction, preventing slippage of the collection roller and ensuring tight and neat winding.

[0026] The adjusting bracket includes two upright plates 3 fixedly connected to the supporting chassis 1. A bidirectional threaded rod 4 is rotatably connected to both upright plates 3. A second drive motor 5 is fixedly installed on one of the upright plates 3. The output end of the second drive motor 5 is fixedly connected to one end of the bidirectional threaded rod 4. Threaded cylinders matching the bidirectional threaded rod 4 are embedded in both L-shaped plates 2. Both L-shaped plates 2 are threadedly connected to the bidirectional threaded rod 4 through the threaded cylinders.

[0027] Specifically, the bidirectional threaded rod 4 engages with the threaded cylinder on the L-shaped plate 2 through two reverse threads. When the second drive motor 5 starts, it drives the bidirectional threaded rod 4 to rotate, which in turn drives the two L-shaped plates 2 to move synchronously towards or away from each other, thereby achieving precise adjustment of the distance between the two conical support rollers 6. This allows it to quickly adapt to EVA sheets of different widths, improving production flexibility.

[0028] Each L-shaped plate 2 is fixedly connected to a set of hydraulic cylinders 9, and each set of hydraulic cylinders 9 is fixedly connected to a V-shaped fixing plate 10 at the top. The two V-shaped fixing plates 10 are respectively set below the two conical support rollers 6, and the two V-shaped fixing plates 10 are jointly equipped with a cutting blade 12.

[0029] During the winding process, the hydraulic cylinder 9 pushes the V-shaped fixing plate 10 upward, pressing the two ends of the sheet to prevent loosening. Its V-shaped structure can adapt to changes in the outer diameter of the sheet, ensuring uniform pressure distribution. In addition, the cutting blade 12 installed on the V-shaped fixing plate 10 can cut the sheet after winding.

[0030] Each of the two V-shaped fixing plates 10 is equipped with a knife holder 11, and the cutting blade 12 is mounted on the two knife holders 11. Each of the two L-shaped plates 2 has a through-hole 13 that matches the cutting blade 12. The through-hole 13 provides space for the cutting blade 12 to move, thus avoiding interference during its use.

[0031] Furthermore, several circular grooves are formed on the bottom surface of each L-shaped plate 2, and a ball bearing 17 is installed inside each groove. Multiple slide rails 16, matching the ball bearings 17, are formed on the support base 1, with each ball bearing 17 positioned inside one of the slide rails 16. The slide rails 16, in conjunction with the ball bearings 17 at the bottom of the L-shaped plate 2, enable the L-shaped plate 2 to move more smoothly and steadily during adjustment, reducing frictional resistance and improving adjustment accuracy.

[0032] Two fixed plates 14 are fixedly connected to the support chassis 1, and guide rollers 15 are rotatably connected to the two fixed plates 14. The fixed plates 14 and guide rollers 15 ensure that the EVA sheet remains flat before entering the winding area, avoiding deviation or wrinkles.

[0033] Working principle: In use, the second drive motor 5 is started, which drives the bidirectional threaded rod 4 to rotate. Since the two L-shaped plates 2 are engaged with the bidirectional threaded rod 4 through the threaded cylinder and the thread direction is opposite, the forward and reverse rotation of the bidirectional threaded rod 4 can make the two L-shaped plates 2 move closer or further away synchronously, thereby adjusting the distance between the two conical support rollers 6 to accommodate EVA sheet winding rollers of different widths. After the winding rollers are installed, the produced EVA sheets can be transported from the production line to the equipment, guided by the guide roller 15 to ensure that they enter the winding area flat, and then the ends of the sheets are guided and wound onto the collecting roller. After completion, the first drive motor 7 is started, which drives the collecting roller to rotate and wind the sheet. After winding, the V-shaped fixing plate 10 is pushed up by the hydraulic cylinder 9 to press the sheet and prevent it from loosening. Furthermore, the cutting blade 12 set on the V-shaped fixing plate 10 can also directly cut the sheet to complete the winding operation.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A winding device for EVA sheets, comprising a supporting chassis (1), characterized in that: Two movable L-shaped plates (2) are mounted on the support chassis (1) via an adjusting bracket. Conical support rollers (6) are rotatably connected to both L-shaped plates (2). A first drive motor (7) is fixedly mounted on one of the L-shaped plates (2). The output end of the first drive motor (7) passes through the L-shaped plate (2) and is fixedly connected to the conical support roller (6). A set of hydraulic cylinders (9) is fixedly connected to each L-shaped plate (2). A V-shaped fixing plate (10) is fixedly connected to the top of each set of hydraulic cylinders (9). The two V-shaped fixing plates (10) are respectively set below the two conical support rollers (6). A cutting blade (12) is installed on both V-shaped fixing plates (10).

2. The EVA sheet winding device according to claim 1, characterized in that: The adjusting bracket includes two upright plates (3) fixedly connected to the supporting chassis (1). A bidirectional threaded rod (4) is rotatably connected to both upright plates (3). A second drive motor (5) is fixedly installed on one of the upright plates (3). The output end of the second drive motor (5) is fixedly connected to one end of the bidirectional threaded rod (4). A threaded cylinder matching the bidirectional threaded rod (4) is embedded in both L-shaped plates (2). Both L-shaped plates (2) are threadedly connected to the bidirectional threaded rod (4) through the threaded cylinder.

3. The EVA sheet winding device according to claim 1, characterized in that: Each of the conical support rollers (6) is fixedly connected with a set of anti-slip strips (8).

4. The EVA sheet winding device according to claim 1, characterized in that: Both of the V-shaped fixing plates (10) are equipped with knife holders (11), and the cutting blade (12) is installed on the two knife holders (11). Both of the L-shaped plates (2) are provided with openings (13) that match the cutting blade (12).

5. The EVA sheet winding device according to claim 1, characterized in that: Each L-shaped plate (2) has several circular grooves on its bottom surface, and each circular groove is provided with a ball (17). The support base (1) has multiple slides (16) that match the ball (17), and each ball (17) is provided inside the slide (16).

6. The EVA sheet winding device according to claim 1, characterized in that: Two fixed plates (14) are fixedly connected to the support chassis (1), and guide rollers (15) are rotatably connected to the two fixed plates (14).

7. The EVA sheet winding device according to claim 1, characterized in that: The support chassis (1) has several mounting holes (18).

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