Resin film winding device having a function of removing static pressure and resin film production line

Abstract

The utility model relates to resin film winding device field, concretely relates to a resin film winding device and resin film production line with static electricity removing and compaction function. Wherein, a resin film winding device with static electricity removing and compaction function, including winding roller, auxiliary roller, limiting frame and support frame, the auxiliary roller sets in the top of winding roller, the auxiliary roller is configured to remove the static electricity of resin film when winding roller is winding and compacts the resin film on winding roller under the gravity of auxiliary roller itself, the limiting frame is configured to limit the up and down movement of auxiliary roller along the vertical direction, the support frame is configured to when the auxiliary roller rises, the support frame is away from auxiliary roller in the length direction of auxiliary roller when the auxiliary roller falls. The resin film winding device and resin film production line provided by the utility model have the effect of excellent static electricity removing and compaction resin film roll.

Description

Technical Field

[0001] This utility model relates to the field of resin film winding devices, specifically to a resin film winding device and resin film production line with a static electricity elimination function. Background Technology

[0002] Adhesive film winding devices generally include a frame with a spool for winding the film. Pressure rollers or other structures press the film firmly onto one side of the spool, ensuring each layer of film is tightly wrapped around it. During winding, as more film is wound, the distance between the spool and the pressure rollers needs to be adjusted in real time to ensure proper film winding.

[0003] In the prior art, Chinese Patent Publication No. CN118954151A discloses a PVB film winding and pressing structure device. Through the cooperation of the winding assembly, pressure rollers, swing arms, and adjusting components, the pressure rollers directly above and behind can move accordingly, adapting to the diameter changes during the winding process to ensure the film is always at the tangent point between the pressure rollers and the winding assembly. However, the pressure roller directly above continuously applies pressure to the film on the winding assembly. Due to the film's good flexibility, it is prone to deformation under prolonged pressure, especially since PVB film surfaces have patterns. Prolonged pressure from the rollers can damage these patterns, affecting the subsequent use of the PVB film.

[0004] Meanwhile, in the mass production of plastic films or when there are high requirements for the surface of the film (such as PVB film for automotive glass), static electricity is only absorbed by the antistatic device during the casting stage of the film as it is cast on the casting roller. However, a large amount of static electricity is usually generated in the film during the winding stage, which cannot be absorbed. Therefore, it is necessary to provide a winding device for plastic films that integrates antistatic function and uses self-lifting force to rise and lock at equal distances to solve the above technical problems. Utility Model Content

[0005] The first aspect of this utility model provides a resin film winding device with the function of removing static electricity. The first objective is to wind up the resin film produced on the resin film production line and remove static electricity from the resin film during the winding process, as well as to smooth and compact the resin film roll and prevent the resin film roll from wrinkling, shifting, etc.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution.

[0007] A resin film winding device with antistatic and compaction functions includes a winding roller, an auxiliary roller, a limiting frame, and a support frame. The auxiliary roller is disposed above the winding roller and is configured to remove static electricity from the resin film during winding and to compact the resin film on the winding roller under its own weight.

[0008] The limiting frame is configured to restrict the auxiliary roller from moving up and down in the vertical direction, and the support frame is configured to intermittently support the auxiliary roller when the auxiliary roller rises, and to move away from the auxiliary roller in the length direction of the auxiliary roller when the auxiliary roller falls.

[0009] According to the resin film winding device with anti-static voltage function described above, the auxiliary roller is provided with bearing seats at both ends, the auxiliary roller is rotatably connected to the bearing seats, the bearing seats are provided with support plates, the support plates are provided with first limiting protrusions at both ends, and the first limiting protrusions are movably disposed in the first limiting groove of the limiting frame.

[0010] According to the resin film winding device with static electricity removal function described above, both ends of the support plate are provided with irregular teeth, and the support frame is provided with irregular toothed racks that match the irregular teeth in the vertical direction.

[0011] According to the resin film winding device with antistatic voltage function described above, the irregular tooth includes an arc-shaped portion and a flat portion, the irregular tooth rack includes an arc-shaped surface and a supporting surface, the arc-shaped portion and the arc-shaped surface are matched, and the supporting surface is configured to support the flat portion; the support plate has a spring chamber inside the part corresponding to the irregular tooth, the spring chamber is provided with a spring, the irregular tooth is correspondingly arranged with the spring, and the irregular tooth moves towards the spring chamber by compressing the spring.

[0012] According to the resin film winding device with anti-static voltage function described above, a rubber magnetic strip is provided at the root of the tooth of the irregular toothed rack.

[0013] According to the resin film winding device with anti-static voltage function described above, the support frame is driven by a driving device to move away from the auxiliary roller in the length direction of the auxiliary roller.

[0014] According to the resin film winding device with antistatic voltage function described above, the upper end of the support frame is provided with a second limiting protrusion, and the limiting frame is provided with a second limiting groove that matches the second limiting protrusion.

[0015] According to the resin film winding device with antistatic voltage function described above, at least one end of the auxiliary roller is provided with an antistatic box, and the antistatic box is connected to a conductive wire.

[0016] According to the resin film winding device with anti-static voltage function described above, the distance between two adjacent teeth of the irregular toothed rack is equal to the thickness of the resin film or an integer multiple of the thickness of the resin film.

[0017] The second aspect of this utility model provides a resin film production line, the second objective of which is to manufacture resin films and remove static electricity generated by the resin films.

[0018] A resin film production line includes a resin film winding device with anti-static function as described above.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The present invention provides a resin film winding device and a resin film production line with static electricity removal function. The resin film winding device is located at the end of the resin film production line and can effectively remove the static electricity generated in the resin film during the production and winding process. At the same time, it can press and compact the resin film during the winding process to prevent the resin film from moving or wrinkling in the middle.

[0021] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This diagram shows a structural schematic of a resin film winding device with anti-static voltage function according to the present invention.

[0024] Figure 2 This is a three-dimensional exploded view of a resin film winding device with anti-static voltage function according to the present invention.

[0025] Figure 3 This diagram shows a structural schematic of the support frame of a resin film winding device with anti-static function according to the present invention.

[0026] Figure 4 This invention illustrates a resin film winding device with anti-static properties. Figure 3 A magnified structural diagram of part A in the middle.

[0027] Figure 5 This diagram shows the structural schematic of a support plate for a resin film winding device with anti-static properties according to the present invention.

[0028] Figure 6 This is a three-dimensional exploded view of the support plate of a resin film winding device with anti-static effect according to the present invention.

[0029] In the picture:

[0030] 1. Rewinding roller; 2. Auxiliary roller; 3. Limiting frame; 4. Support frame; 5. Bearing seat; 51. Support plate; 52. First limiting protrusion; 53. Irregular tooth; 31. First limiting groove; 32. Second limiting groove; 41. Irregular tooth rack; 42. Second limiting protrusion; 43. Rubber magnetic strip; 531. Arc-shaped part; 532. Flat part; 411. Arc-shaped surface; 412. Support surface; 54. Spring chamber; 55. Spring; 56. Cover plate; 57. Spring hole; 6. Drive device; 7. Static dissipation box; 8. Conductive wire; 9. Bracket; 10. Drive motor. Detailed Implementation

[0031] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define the components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Please see Figure 1-6 As shown, a resin film winding device with static electricity removal function includes a winding roller 1, an auxiliary roller 2, a limiting frame 3 and a support frame 4. The auxiliary roller 2 is disposed above the winding roller 1. The auxiliary roller 2 is configured to remove static electricity from the resin film during winding and to compact the resin film on the winding roller 1 under its own weight.

[0036] The limiting frame 3 is configured to restrict the auxiliary roller 2 from moving up and down in the vertical direction, and the support frame 4 is configured to intermittently support the auxiliary roller 2 when it rises, and to move away from the auxiliary roller 2 in the length direction of the auxiliary roller 2 when it falls.

[0037] Please see Figure 1 A resin film winding device with antistatic function is disclosed. A winding roller 1 is mounted on a support 9, and both ends of the winding roller 1 are rotatably connected to the support 9 via bearing seats. The winding roller 1 rotates under the action of a drive motor 10 to wind up the resin film. During the winding process, the thickness of the resin film roll gradually increases. As the thickness increases, the resin film roll exerts an upward force, causing the auxiliary roller to move upward. To achieve antistatic function of the auxiliary roller, a metal roller made of metal is used. However, because the resin film is relatively soft and has patterns on its surface, an excessively heavy metal roller can easily cause deformation of the resin film or damage to the patterns (the patterns disappear under pressure, and the resin film surface becomes flat). Therefore, the auxiliary roller is either a hollow metal roller or has a metal layer on the surface and a lightweight plastic roller inside. A support frame is used to support the auxiliary roller and prevent damage to the resin film caused by the descent of the auxiliary roller during its ascent. After the take-up roller finishes winding, the resin film roll is removed from the take-up roller. The support frame moves away from the auxiliary roller along the length of the auxiliary roller under the drive of the drive device. At this time, the support frame no longer supports the auxiliary roller. The auxiliary roller falls back to its original position under its own gravity, and then the next winding is performed.

[0038] In one specific embodiment, the auxiliary roller 2 is provided with bearing seats 5 at both ends, the auxiliary roller 2 is rotatably connected to the bearing seats 5, the bearing seats 5 are provided with support plates 51, the support plates 51 are provided with first limiting protrusions 52 at both ends, and the first limiting protrusions 52 are movably disposed in the first limiting groove 31 of the limiting frame 3.

[0039] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, when the take-up roller is working, the auxiliary roller will not wobble in any direction within the plane due to the restriction of the first limiting protrusion, ensuring the vertical rise of the auxiliary roller. The shape of the first limiting protrusion in this embodiment is not particularly limited, as long as it can effectively prevent the auxiliary roller from wobbling within the plane. For example, as... Figure 5 and Figure 6 As shown, the first limiting protrusion is a cuboid block, or it can be a T-shaped block. Simultaneously, the bearing housing ensures that the auxiliary roller rotates under the tension of the take-up roller, preventing the auxiliary roller from jamming and causing a safety accident.

[0040] In one specific embodiment, both ends of the support plate 50 are provided with irregular teeth 53, and the support frame 4 is provided with an irregular tooth rack 41 that matches the irregular teeth 53 in the vertical direction.

[0041] Please see Figures 2-5 The support plate is matched with the irregular toothed rack on the support frame through irregular toothed teeth.

[0042] In one specific embodiment, the irregular tooth 53 includes an arc-shaped portion 531 (preferably a semi-circular arc surface) and a flat plate portion 532. The irregular tooth rack 41 includes an arc-shaped surface 411 (preferably a semi-circular arc surface) and a support surface 412. The arc-shaped portion 531 and the arc-shaped surface 411 are matched, and the support surface 412 is configured to support the flat plate portion 532. The support plate 50 has a spring chamber 54 inside the part corresponding to the irregular tooth 53. The spring chamber 54 is provided with a spring 55. The irregular tooth 53 is correspondingly arranged with the spring 55. The irregular tooth 53 moves towards the spring chamber 54 by compressing the spring 55.

[0043] Please refer to the figure. Figures 2-5 As shown, during the winding process, as the thickness of the resin film roll increases, the auxiliary roller receives an upward force, which is transmitted to the shaped teeth. Under this force, the shaped teeth move into the spring chamber, thus raising the auxiliary roller. When the shaped teeth rise to a certain height, the arc-shaped portion of the shaped teeth separates from the arc-shaped surface of the shaped tooth rack. Under the elastic force of the spring, the shaped teeth move away from the spring chamber, and the flat portion of the shaped teeth rests on the support surface of the shaped tooth rack, providing support. The continuous upward movement of the shaped teeth provides regular support on the support surface of the shaped tooth rack.

[0044] In one specific embodiment, a rubber magnetic strip 43 is provided at the root of the tooth of the irregular toothed rack 41.

[0045] Please see Figures 2-4 When the arc-shaped part of the irregular tooth leaves the arc-shaped surface of the irregular tooth rack, the irregular tooth moves outward (relative to the position of the spring) under the elastic force of the spring. In order to prevent the outward movement of the irregular tooth from causing collision and wear to the irregular tooth rack, a rubber magnetic strip is set at the bottom of the tooth root of the irregular tooth rack.

[0046] In one specific embodiment, the support frame 4 is driven by the drive device 6 to move away from the auxiliary roller 2 in the length direction of the auxiliary roller 2.

[0047] Please see Figure 1 and Figure 2After the take-up roller completes the winding of the resin film, it unwinds the resin film from the take-up roller. The drive device 6 then drives the support frame 4 to separate from the support plate. The support plate descends under its own gravity. When it reaches the initial position, the drive device drives the support frame to move towards the support plate, where the support frame supports the support plate. In this embodiment, the drive device can be any drive device capable of linear motion, such as a cylinder, hydraulic cylinder, or linear screw. For simplified control and cost savings, a cylinder drive is preferred.

[0048] In one specific embodiment, the upper end of the support frame 4 is provided with a second limiting protrusion 42, and the limiting frame 3 is provided with a second limiting groove 32 that matches the second limiting protrusion 42.

[0049] Please see Figures 1-4 As shown, the second limiting protrusion can be a T-shaped block structure. Before the next winding begins, the drive device moves the support frame to the initial position. At this time, the second limiting protrusion slides from the second limiting groove to its furthest point. At this position, a portion of the second limiting protrusion is still nested in the second limiting groove, ensuring that the irregular toothed rack and irregular teeth on the support frame move away from each other and disengage, while also preventing dimensional deviations from occurring during the retraction of the drive device in the next winding. During this process, the static electricity is discharged throughout by grounding the static electricity boxes and static electricity wires at both ends of the static electricity roller.

[0050] In one specific embodiment, at least one end of the auxiliary roller 2 is provided with an electrostatic discharge box 7, and the electrostatic discharge box 7 is connected to a conductive wire 8.

[0051] In one specific embodiment, the spacing between two adjacent teeth of the irregular toothed rack 41 is equal to the thickness of the resin film or an integer multiple of the thickness of the resin film.

[0052] Please see Figure 4 As shown, the distance d between two adjacent teeth of the irregular toothed rack 41 is equal to the thickness of the resin film or an integer multiple of the resin film thickness. That is, the auxiliary roller will support the resin film roll on the support frame every time the resin film roll is added by one or an integer number of turns. It can be understood that the winding of the resin film is a continuous process. When resin film rolls of different specifications and thicknesses are finished winding, the auxiliary roller provides support. At this time, the auxiliary roller will no longer apply pressure to the resin film roll to prevent damage to the resin film.

[0053] The second aspect of this utility model provides a resin film production line, the second objective of which is to manufacture resin films and remove static electricity generated by the resin films.

[0054] A resin film production line includes a resin film winding device with anti-static function as described above. The resin film production line also includes resin film production equipment (exemplary resin film production equipment includes one of resin film extrusion molding equipment, resin film casting equipment, etc.), rolling equipment, etc., wherein the resin film winding device is located at the end of the resin film production line.

[0055] This utility model provides a resin film winding device and resin film production line with static electricity removal function. The auxiliary roller and winding roller are designed in the same vertical plane, greatly reducing the space occupied by the entire equipment and the significant cost of building support devices. The auxiliary roller is used to remove static electricity generated in the resin film. Simultaneously, the auxiliary roller is designed at the same stage as the winding after product production, ensuring that as much static electricity as possible is absorbed by the final product. The auxiliary roller utilizes the gradually increasing thickness of the winding roller to generate upward force, saving electricity. While the auxiliary roller's own weight presses downward to increase the winding force and assist in tightening the film roll, this force remains constant (because the auxiliary roller and its supporting device have no weight change throughout the process), preventing the resin film from deviating during winding, improving winding efficiency, and avoiding material waste caused by uneven winding. The auxiliary roller is made of a highly conductive metal. When in contact with the resin film, static electricity is conducted to the grounding end through the static electricity boxes on both sides and conductive wires, preventing static electricity generation. At the same time, the high hardness of the metal prevents local or overall deformation that may occur with plastic-based static electricity removal rollers after prolonged use, which would affect product quality. The smooth metal surface and low friction ensure a tight fit between the antistatic roller and the take-up roller, preventing damage to the embossed patterns required for some products and improving take-up efficiency. The auxiliary roller generally adopts a hollow structure to prevent excessive weight from affecting the pattern of the resin film. The contact surfaces of the irregular teeth and the irregular tooth rack are semi-circular, providing gentle contact and making the structure more durable, reducing the frequency of parts replacement. When the auxiliary roller rises, it drives the irregular teeth to move upward. The arc-shaped surface (preferably semi-circular) between the irregular teeth and the irregular tooth rack converts part of the upward force into a force that pushes the irregular teeth inward toward the spring chamber. Three springs in each spring chamber are embedded between the irregular teeth and the spring holes 57 of the spring chamber to prevent deviation. At the same time, when the springs need to be replaced for maintenance after long-term use, it is convenient to replace them with new springs (replacement can be performed by removing the cover plate 56). The operation is simple, and the installation, replacement, and maintenance steps are straightforward and safe. The irregularly shaped toothed rack support frame enters the working state after being pushed into the T-slot (second limit slot) by the cylinder. After one roll of film is wound up, the cylinder (drive device) pulls the support frame out of the T-slot to deactivate the working state. Each vertical surface of the irregularly shaped toothed rack has a rubber magnetic sheet attached to assist in positioning the self-locking teeth after each spring rebound, and it also has a buffering effect, increasing the durability of the mechanism. It eliminates the need for controllers, pressure sensors, and position sensors, reducing costs while achieving automation. By replacing the functions of electronic components with mechanical structures, it greatly increases reliability and improves winding efficiency. The simple structure makes it easy to manufacture, install, and use, and it has significant practical value.

[0056] The above description is only an exemplary embodiment of the present utility model and is 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 resin film winding device with anti-static voltage function, characterized in that, It includes a take-up roller (1), an auxiliary roller (2), a limiting frame (3) and a support frame (4). The auxiliary roller (2) is disposed above the take-up roller (1). The auxiliary roller (2) is configured to remove static electricity from the resin film of the take-up roller (1) during take-up and to compact the resin film on the take-up roller (1) under the weight of the auxiliary roller (2). The limiting frame (3) is configured to restrict the auxiliary roller (2) from moving up and down in the vertical direction. The support frame (4) is configured to intermittently support the auxiliary roller (2) when it rises and to move away from the auxiliary roller (2) in the length direction of the auxiliary roller (2) when it falls.

2. The resin film winding device having a function of removing static electricity and pressure, according to claim 1, wherein The auxiliary roller (2) is provided with bearing seats (5) at both ends. The auxiliary roller (2) is rotatably connected to the bearing seats (5). A support plate (51) is provided on the bearing seats (5). The support plate (51) is provided with first limiting protrusions (52) at both ends. The first limiting protrusions (52) are movably disposed in the first limiting groove (31) of the limiting frame (3).

3. The resin film winding device having a function of removing static electricity and pressure, according to claim 2, wherein Both ends of the support plate (51) are provided with irregular teeth (53), and the support frame (4) is provided with an irregular tooth rack (41) that matches the irregular teeth (53) in the vertical direction.

4. The resin film winding device having a function of removing static electricity according to claim 3, wherein The irregular tooth (53) includes an arc-shaped portion (531) and a flat portion (532). The irregular tooth rack (41) includes an arc-shaped surface (411) and a support surface (412). The arc-shaped portion (531) and the arc-shaped surface (411) are matched. The support surface (412) is configured to support the flat portion (532). The support plate (51) has a spring chamber (54) inside the part corresponding to the irregular tooth (53). The spring chamber (54) is provided with a spring (55). The irregular tooth (53) is correspondingly provided with the spring (55). The irregular tooth (53) moves towards the spring chamber (54) by compressing the spring (55).

5. The resin film winding device having a function of removing static electricity and pressure, according to claim 4, wherein The root of the irregular toothed rack (41) is provided with a rubber magnetic strip (43).

6. The resin film winding device having a function of removing static electricity and pressure, according to claim 5, wherein The support frame (4) is driven by the drive device (6) to move away from the auxiliary roller (2) in the length direction of the auxiliary roller (2).

7. The resin film winding device having a function of removing static electricity and pressure, according to claim 6, wherein The upper end of the support frame (4) is provided with a second limiting protrusion (42), and the limiting frame (3) is provided with a second limiting groove (32) that matches the second limiting protrusion (42).

8. The resin film winding device having a function of removing static electricity and pressure, according to claim 1, wherein At least one end of the auxiliary roller (2) is provided with an electrostatic discharge box (7), and the electrostatic discharge box (7) is connected to a conductive wire (8).

9. The resin film winding device having a function of removing static electricity and a function of pressure hardening according to claim 3, wherein The spacing between two adjacent teeth of the irregular toothed rack (41) is equal to the thickness of the resin film or an integer multiple of the thickness of the resin film.

10. A resin film production line characterized by comprising: The resin film winding device having a destatic voltage-reducing function is described in any one of claims 1-9.

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