Edge trimming device for industrial film
Patent Information
- Application Number
- CN202522342874.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-05
AI Technical Summary
[0004]本实用新型的目的是提供一种工业胶片用的修边装置，解决了现有技术中目前普遍采用固定式旋转刀具或直线裁切机构对运行中的胶片两侧进行同步修边，虽然能够实现连续化作业，但在处理高温或高弹性胶料时，裁切瞬间刀具对材料施加的剪切力和摩擦力极易导致胶片边缘发生塑性变形
[0011]本实用新型的一种工业胶片用的修边装置，通过设置导向框架及其中的两个导向辊，能够有效引导胶片平稳进入加工区域，保证其输送路径的直线性和稳定性，减少因跑偏导致的修边误差；加工台两侧的竖板与升降板之间通过竖直升降结构连接，使得升降板的高度可调，进而带动其底部的转动压边结构实现高度适应性调节，这一结构设计解决了传统修边设备中压紧机构固定不可调的问题，尤其适用于不同厚度和弹性模量的工业胶片，提高了设备的通用性和工艺适配能力；转动压边结构在裁切前及裁切过程中对胶片边缘施加动态压力，能够在刀具作用区域形成局部约束，有效限制材料在受力后的弹性变形和回弹趋势，显著减轻甚至消除因内应力释放和局部温升所造成的边缘卷曲、翻边等缺陷，提升了修边后边缘的平整度和一致性；修边模块位于加工台中心位置，配合两侧受控压紧的胶片状态，可实现对称、同步的双边修整，确保两侧修边宽度均匀，避免单侧过切或欠切。
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Figure CN224897451U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber processing technology, and in particular to a trimming device for industrial films. Background Technology
[0002] Industrial rubber sheets are important intermediate products in the processing of rubber and polymer materials, widely used in the production of rubber products such as tires, conveyor belts, and sealing products. They are typically made from compounded rubber through calendering or extrusion into continuous sheet materials, which are then slit, cooled, and trimmed according to subsequent processing requirements. Due to factors such as overflow at the mold edges, uneven temperature distribution, or fluctuations in traction tension during the molding process, defects such as burrs, flash, uneven thickness, or slight warping often appear on the edges of the rubber sheets. If these defects are not addressed promptly, they not only affect the product's appearance but may also cause problems such as misalignment, bubbles, or insufficient strength in subsequent vulcanization and lamination processes. Therefore, before the rubber sheets enter the inspection or winding process, the edges must be precisely cut and trimmed using a specialized trimming device to ensure dimensional accuracy and edge quality, meeting the production requirements of high-quality rubber products.
[0003] Existing industrial film trimming devices face a significant problem of edge curling during actual cutting operations. Currently, fixed rotary cutters or linear cutting mechanisms are commonly used to simultaneously trim both sides of the film while it is in operation. Although this allows for continuous operation, when handling high-temperature or highly elastic rubber materials, the shearing and frictional forces applied by the cutter to the material at the moment of cutting can easily cause plastic deformation of the film edges. Due to the significant elastic recovery characteristics of rubber materials, the cut edge area rapidly rebounds due to the release of internal stress after the cutter completes the cutting process. In addition, the local heat generated during the cutting process softens the material, often leading to edge curling and folding. Utility Model Content
[0004] The purpose of this invention is to provide a trimming device for industrial films, solving the problem of the current technology that commonly uses fixed rotating cutters or linear cutting mechanisms to simultaneously trim both sides of moving films. Although this allows for continuous operation, when handling high-temperature or highly elastic rubber materials, the shearing and frictional forces applied by the cutter to the material at the moment of cutting easily cause plastic deformation of the film edges. Because rubber materials themselves have significant elastic recovery characteristics, after the cutter completes the cutting, the cut edge area rapidly rebounds due to the release of internal stress. In addition, the localized heat generated during the cutting process softens the material, often leading to edge curling and folding.
[0005] To achieve the above objectives, this utility model provides a trimming device for industrial films, including a processing table and a trimming module installed at the center of the top of the processing table; The processing table has several vertical plates on both sides of the top. A lifting plate is provided on one side of the vertical plate. A rotating pressing structure is connected to the bottom of the lifting plate. One end of the lifting plate is connected to the vertical plate through a vertical lifting structure. One end of the processing table is provided with a guide frame, and two guide rollers are rotatably connected inside the guide frame.
[0006] One side of the vertical plate is bolted to the side wall of the processing table, and a mounting plate is fixedly connected to the bottom of one side of the vertical plate.
[0007] The guide frame is made of metal, and one side of the guide frame is connected to the side wall of the processing table through a fixed bracket.
[0008] The vertical plate has a sliding groove on one side, and one end of the lifting plate is fixedly connected to a sliding plate that slides in cooperation with the sliding groove.
[0009] The rotating pressing structure includes a rotating seat at the bottom of the lifting plate and a pressing roller rotatably connected inside the rotating seat. A crossbar is provided at the top of the lifting plate. A guide rod is connected to both sides of the bottom of the crossbar, with one end sliding through the lifting plate and connecting to the top of the rotating seat. The other two sides of the bottom of the crossbar are connected to the top of the lifting plate through compression springs.
[0010] The vertical lifting structure includes a top plate, a lead screw, and a drive motor. The drive motor is connected to the top of the mounting plate and its output shaft is connected to the lead screw. One end of the lead screw is threaded through the sliding plate and rotatably connected to the bottom of the top plate. One side of the top plate is fixedly connected to the side wall of the vertical plate.
[0011] This utility model discloses a trimming device for industrial films. By incorporating a guide frame and two guide rollers, it effectively guides the film smoothly into the processing area, ensuring the straightness and stability of its transport path and reducing trimming errors caused by deviation. The vertical plates on both sides of the processing table are connected to the lifting plate via a vertical lifting structure, allowing the height of the lifting plate to be adjusted. This, in turn, drives the rotating pressing structure at its bottom to achieve height adaptive adjustment. This structural design solves the problem of the fixed and unadjustable pressing mechanism in traditional trimming equipment, and is particularly suitable for industrial films of different thicknesses and elastic moduli, improving... The equipment's versatility and process adaptability are enhanced; the rotating edge-pressing structure applies dynamic pressure to the edge of the film before and during cutting, which can form local constraints in the area where the cutter works, effectively limiting the elastic deformation and springback tendency of the material after being stressed, significantly reducing or even eliminating defects such as edge curling and flanging caused by internal stress release and local temperature rise, and improving the flatness and consistency of the edge after trimming; the trimming module is located in the center of the processing table, and with the controlled pressing state of the film on both sides, it can achieve symmetrical and synchronous bilateral trimming, ensuring that the trimming width on both sides is uniform and avoiding over-cutting or under-cutting on one side. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.
[0014] Figure 2 This is a schematic diagram of the guide frame and mounting plate according to an embodiment of the present invention.
[0015] Figure 3 This is a structural schematic diagram of the vertical plate and the top plate of an embodiment of this utility model.
[0016] Figure 4 This is a schematic diagram of the pressure roller and rotating seat according to an embodiment of the present invention.
[0017] Figure 5 This is a schematic diagram of the drive motor and lead screw according to an embodiment of the present invention.
[0018] In the diagram: 1. Guide frame; 2. Guide roller; 3. Processing table; 4. Trimming module; 5. Vertical plate; 6. Mounting plate; 7. Lifting plate; 8. Top plate; 9. Pressure roller; 10. Rotating seat; 11. Guide rod; 12. Compression spring; 13. Crossbar; 14. Slide groove; 15. Drive motor; 16. Lead screw. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0020] Example 1 Please see Figure 1-5 As shown, an edge trimming device for industrial film in this embodiment includes a processing table 3 and an edge trimming module 4 installed at the center of the top of the processing table 3. Several vertical plates 5 are provided on both sides of the top of the processing table 3. A lifting plate 7 is provided on one side of the vertical plate 5. A rotating pressing structure is connected to the bottom of the lifting plate 7. One end of the lifting plate 7 is connected to the vertical plate 5 through a vertical lifting structure. One end of the processing table 3 is provided with a guide frame 1, and two guide rollers 2 are rotatably connected inside the guide frame 1.
[0021] Workflow: When trimming is required, the industrial film to be processed is first drawn out from the unwinding equipment, and one end of it passes through two guide rollers 2 inside the guide frame 1 at one end of the processing table 3. The guide rollers 2 guide the film to maintain a stable direction of travel and appropriate tension during transport, preventing inaccurate trimming positions due to offset or slack. The film continues to be transported forward to the top of the processing table 3. At this point, the height of the lifting plate 7 is adjusted according to the film's thickness and material characteristics using a vertical lifting structure. The vertical lifting structure can be a screw and nut pair, cylinder, or electric push rod, etc., to move the lifting plate 7 up and down along the vertical plate 5, thus adapting to the processing requirements of different film specifications. Once the lifting plate 7 is adjusted to the appropriate height, the rotating edge-pressing structure is activated. This structure, located at the bottom of the lifting plate 7, can be a rotating mechanism with elastic pressure rollers or pressure wheels. It pre-adjusts the film before it enters the trimming area. Moderate pressure is applied to both sides of the film to press and flatten the area to be trimmed, preventing it from warping or fluctuating due to elastic rebound during the cutting process. The film then enters the working area of the trimming module 4, which is installed at the top center of the processing table 3. The trimming module 4 contains a high-speed rotating cutter or a linear reciprocating cutter to precisely cut the parts of the film that exceed the set width on both sides, removing defects such as burrs and flash. At the moment of cutting, the rotating edge pressing structure continuously applies stable pressure to the edge area, effectively suppressing edge curling and flipping caused by shearing force and release of internal material stress. At the same time, since the lifting plate 7 can be flexibly adjusted in height through the vertical lifting structure, the rotating edge pressing structure can closely fit the film surface, and reliable pressing can be achieved regardless of the film thickness. After trimming, the film continues to be conveyed forward and undergoes cooling, inspection or winding in subsequent processes. The entire process realizes continuous and stable automatic trimming operation.
[0022] Example 2 Please see Figure 1-5 As shown in this embodiment, an edge trimming device for industrial film has a vertical plate 5 bolted to one side of the side wall of the processing table 3, and a mounting plate 6 fixedly connected to the bottom of one side of the vertical plate 5. Specifically, by bolting one side of the vertical plate 5 to the side wall of the processing table 3 and fixing the bottom of one side of the vertical plate 5 to the mounting plate 6, the vertical plate 5 can be stably installed on the side of the processing table 3, providing a reliable support foundation for the subsequent up and down movement of the lifting plate 7. At the same time, the mounting plate 6 provides a direct mounting platform for the lifting drive components such as the drive motor 15, ensuring the assembly accuracy and operational stability of the entire vertical lifting structure, and achieving the effect of enhancing the overall structural rigidity and connection reliability of the device.
[0023] A groove 14 is provided on one side of the vertical plate 5, and a sliding plate that slides in cooperation with the groove 14 is fixedly connected to one end of the lifting plate 7. Specifically, the groove 14 on one side of the vertical plate 5 and the sliding plate that slides in cooperation with the groove 14 are fixedly connected to one end of the lifting plate 7, forming a linear sliding cooperation structure with clear guidance and smooth movement. When the drive motor 15 drives the lead screw 16 to rotate, the sliding plate slides precisely along the direction of the groove 14, effectively constraining the movement trajectory of the lifting plate 7 and preventing it from deflecting or jamming during the lifting process, thereby improving the guiding accuracy and smooth operation of the lifting action.
[0024] The vertical lifting structure includes a top plate 8, a lead screw 16, and a drive motor 15. The drive motor 15 is connected to the top of the mounting plate 6, and its output shaft is connected to the lead screw 16. One end of the lead screw 16 is threaded through the sliding plate and rotatably connected to the bottom of the top plate 8. One side of the top plate 8 is fixedly connected to the side wall of the vertical plate 5. Specifically, the vertical lifting structure, including the top plate 8, lead screw 16, and drive motor 15, wherein the drive motor 15 is connected to the top of the mounting plate 6 and its output shaft is connected to the lead screw 16, one end of the lead screw 16 is threaded through the sliding plate and rotatably connected to the bottom of the top plate 8, and one side of the top plate 8 is fixedly connected to the side wall of the vertical plate 5, constitutes a lead screw and nut transmission system driven by a motor. After the drive motor 15 starts, it drives the lead screw 16 to rotate, and through the threaded engagement with the sliding plate, it pushes the lifting plate 7 to rise and fall smoothly in the vertical direction. The top plate 8 and the mounting plate 6 together form support for both ends of the lead screw 16, improving the rigidity and positioning accuracy of the transmission structure, and achieving the effect of precise height adjustment of the lifting plate 7, smooth operation, and easy automation control.
[0025] Example 3 Please see Figure 1-5As shown in this embodiment, an edge trimming device for industrial film includes a guide frame 1 made of metal. One side of the guide frame 1 is connected to the side wall of the processing table 3 via a fixed bracket. Specifically, by making the guide frame 1 of metal and connecting one side of the guide frame 1 to the side wall of the processing table 3 via a fixed bracket, the guide frame 1 can be stably fixed to the front end of the processing table 3 while ensuring sufficient strength and wear resistance. This prevents shaking or deformation during continuous film traction, thereby ensuring that the two guide rollers 2 always maintain the correct relative position and axial parallelism, thus improving the film feeding guidance accuracy and the long-term operational stability of the equipment.
[0026] The rotating pressing structure includes a rotating seat 10 located at the bottom of the lifting plate 7 and a pressure roller 9 rotatably connected inside the rotating seat 10. A crossbar 13 is located at the top of the lifting plate 7. Guide rods 11, one end of which slides through the lifting plate 7 and connects to the top of the rotating seat 10, are connected to both sides of the bottom of the crossbar 13. The other two sides of the bottom of the crossbar 13 are connected to the top of the lifting plate 7 via compression springs 12. Specifically, the rotating pressing structure includes a rotating seat 10 located at the bottom of the lifting plate 7 and a pressure roller 9 rotatably connected inside the rotating seat 10. The top of the lifting plate 7 is equipped with a crossbar 13, a guide rod 11, and a compression spring 12, which allows the pressure roller 9 to roll forward on the film surface, reducing frictional resistance between the roller and the film and preventing scratches on the material. At the same time, when there are slight fluctuations in the film thickness, the pressure roller 9, under pressure, drives the guide rod 11 to slide upward through the rotating seat 10, compressing the compression spring 12 and achieving elastic displacement. Then, under the action of the spring force, it automatically resets, maintaining continuous pressing force. This achieves the effect of flexibly pressing the edges of films of different thicknesses, preventing damage, and being highly adaptable.
[0027] When performing industrial film trimming, the film to be processed is first drawn out from the unwinding device, allowing its front end to pass sequentially through two guide rollers 2 inside a guide frame 1 located at one end of the processing table 3. The guide frame 1 is made of metal, possessing good structural strength and wear resistance, and is connected to the side wall of the processing table 3 via a fixed bracket, ensuring a stable overall installation. This prevents the film from swaying or shifting due to traction during continuous film transport. The two guide rollers 2 are rotatably connected within the guide frame 1, effectively guiding and initially tensioning the film's direction of travel, preventing deviation, wrinkling, or loosening before entering the trimming area, thus ensuring the accuracy of subsequent trimming positions. The film continues to be transported forward to above the processing table 3, at which point... The specific thickness and elastic properties of the film being processed are determined. The drive motor 15 is activated. This motor is mounted on a mounting plate 6 at the bottom of one side of the vertical plate 5. Its output shaft is connected to a lead screw 16, causing it to rotate. The top of the lead screw 16 is fixedly connected to the side wall of the vertical plate 5 via a top plate 8, providing rotational support. The bottom end is threaded through a sliding plate at the end of the lifting plate 7. As the lead screw 16 rotates, the sliding plate moves axially, thus driving the entire lifting plate 7 to rise and fall vertically. The movement of the lifting plate 7 is constrained by the sliding fit between the groove 14 on the side wall of the vertical plate 5 and the sliding plate. This structure ensures that the lifting plate 7 can only move smoothly in the vertical direction, preventing lateral offset or torsion during lifting and falling, thus improving the guiding accuracy and stability of the movement. When the lifting plate... 7. After adjusting to the height matching the current film thickness, stop the drive motor 15. At this time, the rotating pressing structure connected to the bottom of the lifting plate 7 is directly facing the two edge areas of the film. The rotating pressing structure includes a rotating seat 10 fixed to the bottom of the lifting plate 7, and a pressure roller 9 is rotatably connected inside it. The pressure roller 9 can roll synchronously with the film, reducing sliding friction with the film surface and avoiding scratching the material. At the same time, a crossbar 13 is provided at the top of the lifting plate 7. Its bottom two sides are connected to the top of the rotating seat 10 through guide rods 11. One end of the guide rod 11 slides through the lifting plate 7, allowing the rotating seat 10 to have a certain floating stroke in the vertical direction. The other two sides of the bottom of the crossbar 13 are connected to the top of the lifting plate 7 through compression springs 12, providing downward pressure in the normal state. The elastic pressure keeps the pressure roller 9 in close contact with the film surface. When there are slight fluctuations or minor undulations in the local thickness of the film, the pressure roller 9 floats upward under force, driving the rotating seat 10 and guide rod 11 to move upward, compressing the spring 12 to achieve flexible displacement. Then, under the action of the spring's restoring force, it automatically resets, maintaining a stable and non-excessive clamping force, effectively preventing film deformation or damage caused by rigid clamping. As the film continues to move forward, the two side edges are flattened and stably constrained by the pressure roller 9, and then enter the working area of the trimming module 4 located at the top center of the processing table 3. The module is equipped with a high-speed rotating disc cutter or a reciprocating linear cutter to precisely cut the parts of the film that exceed the set width on both sides, removing defects such as burrs and flash.Because the rotating edge-pressing structure applies effective dynamic compression to the edge area at the moment of cutting, it significantly suppresses the internal stress rebound and curling / flipping phenomena caused by localized thermal softening of the rubber material due to its high elasticity after shearing, ensuring a flat and smooth cut. After bilateral trimming, the rubber sheet continues to be conveyed forward to subsequent cooling, inspection, or winding processes. The entire trimming process is automated and continuous.
[0028] This trimming device for industrial film, through the cooperation of a guide frame 1 and two guide rollers 2, can accurately guide and initially tension the film entering the equipment, avoiding uneven trimming caused by feeding deviation and improving processing consistency. The guide frame 1 is made of metal and is connected to the processing table 3 through a fixed bracket, enhancing the overall stability and durability of the structure and ensuring that the guiding accuracy does not decrease during long-term operation. The vertical plate 5 is fixedly connected to the side wall of the processing table 3 by bolts, providing a solid support foundation. At the same time, the mounting plate 6 at its bottom provides a reliable mounting platform for the drive motor 15, facilitating the integration and maintenance of the power system. The sliding groove 14 opened on the side wall of the vertical plate 5 forms a sliding fit with the sliding plate on the lifting plate 7, effectively constraining the movement trajectory of the lifting plate 7, preventing it from shaking or jamming during lifting, and improving the guiding accuracy and running stability of the vertical lifting structure. The device consists of a drive motor 15, a lead screw 16, a top plate 8, and a mounting plate 15. The vertical lifting structure formed by mounting plate 6 enables precise adjustment of the height of lifting plate 7, adapting to the processing needs of films of different thicknesses. The top plate 8 provides rotational support for the upper end of the lead screw 16, while the mounting plate 6 provides installation and support for the motor and the lower end of the lead screw 16. The constraints at both ends improve the rigidity and positioning accuracy of the lead screw transmission, making the lifting action more stable and reliable. In the rotating edge pressing structure set at the bottom of the lifting plate 7, the pressure roller 9 achieves rolling pressing through the rotating seat 10, reducing frictional damage to the film surface. At the same time, the combination structure of the crossbar 13, guide rod 11, and compression spring 12 gives the pressure roller 9 a certain elastic floating ability, which can automatically adjust the pressure when the film thickness fluctuates, achieving flexible pressing, ensuring the pressing effect while avoiding material deformation caused by excessive compression. The trimming module 4 is located at the center of the processing table 3. Together with the pressing mechanisms arranged symmetrically on both sides, it can achieve synchronous and uniform trimming of both sides of the film, ensuring consistent edge dimensions.
[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A trimming device for industrial film, characterized in that, include: Processing table (3) and trimming module (4) installed at the center of the top of processing table (3); The processing table (3) has several vertical plates (5) on both sides of the top. A lifting plate (7) is provided on one side of the vertical plate (5). A rotating pressing structure is connected to the bottom of the lifting plate (7). One end of the lifting plate (7) is connected to the vertical plate (5) through a vertical lifting structure. One end of the processing table (3) is provided with a guide frame (1), and two guide rollers (2) are rotatably connected inside the guide frame (1).
2. The trimming device for industrial film according to claim 1, characterized in that, One side of the vertical plate (5) is fixedly connected to the side wall of the processing table (3) by bolts, and a mounting plate (6) is fixedly connected to the bottom of one side of the vertical plate (5).
3. The trimming device for industrial film according to claim 1, characterized in that, The guide frame (1) is made of metal, and one side of the guide frame (1) is connected to the side wall of the processing table (3) through a fixed bracket.
4. The trimming device for industrial film according to claim 2, characterized in that, A sliding groove (14) is provided on one side of the vertical plate (5), and a sliding plate that slides in cooperation with the sliding groove (14) is fixedly connected to one end of the lifting plate (7).
5. The trimming device for industrial film according to claim 3, characterized in that, The rotating pressing structure includes a rotating seat (10) set at the bottom of the lifting plate (7) and a pressing roller (9) rotatably connected inside the rotating seat (10). A crossbar (13) is set at the top of the lifting plate (7). A guide rod (11) with one end sliding through the lifting plate (7) and the top of the rotating seat (10) is connected to both sides of the bottom of the crossbar (13). The other two sides of the bottom of the crossbar (13) are connected to the top of the lifting plate (7) by compression springs (12).
6. The trimming device for industrial film according to claim 4, characterized in that, The vertical lifting structure includes a top plate (8), a lead screw (16) and a drive motor (15). The drive motor (15) is connected to the top of the mounting plate (6) and its output shaft is connected to the lead screw (16). One end of the lead screw (16) is threaded through the sliding plate and rotatably connected to the bottom of the top plate (8). One side of the top plate (8) is fixedly connected to the side wall of the vertical plate (5).