Film cutting device
By designing a film cutting device, the problem of unevenness on both sides of the film is solved by using the synchronous transmission of the guide roller and the cutting roller, a stable cutting effect is achieved, the film is prevented from breaking or loosening, and the cost is low.
Patent Information
- Application Number
- CN202423305449.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In the prior art, polyvinylidene fluoride grafted modified polymer films are not uniform on both sides in the width direction during the production process, requiring a cutting device for removal.
A film cutting device was designed, including a frame, a slide, a top shaft, a cylinder, a pressure roller, a guide roller, and a cutting roller. The synchronous transmission of the guide roller and the cutting roller ensures that the film's unfolding and rewinding speeds are consistent, and the film is cut on both sides using a cutter.
It achieves stable film cutting quality, avoids tearing or loosening, and has a simple structure and low cost.
Smart Images
Figure CN223617807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of film production technology, and in particular to a film cutting device. Background Technology
[0002] Polyvinylidene fluoride (PVDF) grafted polymers possess high electric field polarization and a relatively high breakdown electric field, exhibiting both high energy storage density and low energy loss, making them a next-generation dielectric material for high-energy-storage capacitors. PVDF grafted polymer films are currently generally produced using a coating method. This involves dissolving the PVDF grafted polymer in a solvent and then coating it onto a smooth surface. After drying, a film is formed. Due to the nature of the process, films produced by the coating method often have uneven widths on both sides, thus requiring a film cutting device to remove the uneven edges. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a film cutting device in response to the above-mentioned technical deficiencies.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a film cutting device, including a frame, through grooves are provided on both sides of the lower end of the frame, a slide block is slidably connected in the through groove, a top shaft is rotatably connected to the inner side of the slide block, two slide blocks located at the same end of the frame are connected to a U-shaped frame, a cylinder is provided between the U-shaped frame and the end of the frame, a pressure roller is rotatably connected to the side of the frame away from the cylinder, a first guide roller and a second guide roller are rotatably connected to the two ends of the top of the frame respectively, grooves are provided on both sides of the first guide roller, a cutting roller is also rotatably connected to the frame, a cutter corresponding to the groove is provided on the cutting roller, the second guide roller is driven by a motor, the second guide roller is driven by two pressure rollers and the first guide roller, and the linear velocity of the surfaces of the four are equal and the clockwise direction of rotation is the same.
[0005] To further optimize this technical solution, a gear is provided at one end of the first guide roller, and a gear is provided on the cutting roller that meshes with the gear on the first guide roller. The two gears have the same number of teeth.
[0006] To further optimize this technical solution, two sprockets are provided at one end of the first guide roller and the second guide roller, and one sprocket is provided at one end of the two pressure rollers. The first guide roller and the second guide roller are connected by chain drive. The first guide roller is connected to the pressure roller located below it by chain drive, and the second guide roller is connected to the pressure roller located below it by chain drive.
[0007] To further optimize this technical solution, the cutter has a single-sided cutting edge with the cutting edge close to the inner side of the groove.
[0008] The present invention has the following advantages: the linear velocity of the surface of the first guide roller, the first guide roller and the two pressure rollers is equal, the two pressure rollers contact the surface of the two film rolls respectively to drive them to rotate, so that the film is wound and unwound at the same speed, and the cut film will not be torn or loosened. The first guide roller is provided with grooves on both sides, and the cutter on the cutting roller is located in the grooves to cut the film on both sides. The device has a simple structure and low cost. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of a film cutting device.
[0010] Figure 2 for Figure 1 A magnified view of point I in the middle.
[0011] Figure 3 This is a schematic diagram of the structure of the film cutting device in use.
[0012] In the diagram: 1. Frame; 11. Through groove; 2. Slide; 3. Top shaft; 4. Cylinder; 5. Pressure roller; 6. First guide roller; 61. Groove; 7. Cutting roller; 71. Cutter; 8. Second guide roller; 9. Motor; 10. Film. Detailed Implementation
[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0014] Detailed implementation method: combined with Figure 1-3As shown, a film cutting device includes a frame 1. Through grooves 11 are provided on both sides of the lower end of the frame 1. Slide blocks 2 are slidably connected within the through grooves 11. A top shaft 3 is rotatably connected to the inner side of each slide block 2, allowing the film roll to be pressed together. Two slide blocks 2 located at the same end of the frame 1 are connected to a U-shaped frame. A cylinder 4 is provided between the U-shaped frame and the end of the frame 1. There are two U-shaped frames and two cylinders 4, located on opposite sides of the frame 1. The cylinders 4 can drive the slide blocks 2 to slide along the through grooves 11. Two pressure rollers 5 are rotatably connected to the side of the frame 1 away from the cylinders 4 on the side of the through grooves 11. On both sides of the frame 1, and at both ends of the top of the frame 1, a first guide roller 6 and a second guide roller 8 are rotatably connected. The first guide roller 6 has grooves 61 on both sides. A cutting roller 7 is also rotatably connected to the frame 1. The cutting roller 7 has a cutter 71 corresponding to the groove 61, with the cutting edge of the cutter 71 extending into the groove 61. The second guide roller 8 is driven by a motor 9. The second guide roller 8 is also driven by two pressure rollers 5 and the first guide roller 6, and all four have equal linear velocities and rotate in the same clockwise direction. This ensures that the film 10 is extended and retracted at a consistent speed, preventing the cut film 10 from breaking or loosening. In use, combined with… Figure 3 As shown, the film roll to be cut is placed on the top shaft 3 at the right end of the frame 1. The roll used to wind the cut film 10 is placed on the top shaft 3 at the left end of the frame 1, and the roll has been wound with several turns of film to form a film roll. Under the action of the cylinder 4, the two pressure rollers 5 press against the outer circumference of the film roll at the left and right ends respectively, thereby driving the film roll to rotate. As the cutting proceeds, when the diameter of the film roll at the right end decreases, the cylinder 4 at the right end will push the slide 2 to the left so that the outer circumference of the film roll is always in contact with the pressure roller 5 at the right end. When the diameter of the film roll at the left end increases, the piston rod of the cylinder 4 at the left end will be pushed to the left and retracted. The two sides of the film 10 are cut by the cutter 71 and separated from the film 10. Since the top shaft 3 and the pressure rollers 5 are located below the first guide roller 6, the contact area between the film and the first guide roller 6 is large (that is, the film covers a certain area of the outer surface of the first guide roller 6), making it less likely to wrinkle when cut by the cutter 71.
[0015] A gear is provided at one end of the first guide roller 6, and a gear is provided on the cutting roller 7 that meshes with the gear on the first guide roller 6. The two gears have the same number of teeth, so that the first guide roller 6 and the cutting roller 7 rotate in opposite directions and at the same angular velocity, resulting in better cutting quality.
[0016] Each of the first guide roller 6 and the second guide roller 8 has two sprockets at one end, and each of the two pressure rollers 5 has one sprocket at one end. The first guide roller 6 and the second guide roller 8 are connected by a chain drive. The first guide roller 6 is connected to the pressure roller 5 below it by a chain drive, and the second guide roller 8 is connected to the pressure roller 5 below it by a chain drive. The outer diameters of the first guide roller 6, the second guide roller 8, and the two pressure rollers 5 can be set to be equal, and the number of teeth on all sprockets can be the same. Alternatively, the diameters of the four rollers can be set to be different, and the product of the number of teeth and the diameter of the sprockets on all four rollers can be equal, thereby ensuring that the linear velocities of the surfaces of the second guide roller 8, the two pressure rollers 5, and the first guide roller 6 are equal.
[0017] The cutter 71 has a single-sided cutting edge that is close to the inside of the groove 61, resulting in better cutting quality.
[0018] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A film cutting device, comprising a frame (1), characterized in that: Both ends of the lower part of the frame (1) are provided with through grooves (11), and slide blocks (2) are slidably connected in the through grooves (11). A top shaft (3) is rotatably connected to the inner side of the slide blocks (2). Two slide blocks (2) located at the same end of the frame (1) are connected to a U-shaped frame. A cylinder (4) is provided between the U-shaped frame and the end of the frame (1). Pressure rollers (5) are rotatably connected to the side of the frame (1) away from the cylinders (4) in the through grooves (11). The two ends of the top of the frame (1) are respectively rotatably connected to... The machine is equipped with a first guide roller (6) and a second guide roller (8). The first guide roller (6) has grooves (61) on both sides. A cutting roller (7) is also rotatably connected to the frame (1). The cutting roller (7) is equipped with a cutter (71) corresponding to the groove (61). The second guide roller (8) is driven by a motor (9). The second guide roller (8) is driven by two pressure rollers (5) and the first guide roller (6), and the linear velocity of the surfaces of the four rollers is equal and the clockwise direction of their rotation is the same.
2. The film cutting device according to claim 1, characterized in that: A gear is provided at one end of the first guide roller (6), and a gear with the same number of teeth is provided on the cutting roller (7) that meshes with the gear on the first guide roller (6).
3. The film cutting device according to claim 1, characterized in that: Two sprockets are provided at one end of the first guide roller (6) and the second guide roller (8), and one sprocket is provided at one end of the two pressure rollers (5). The first guide roller (6) and the second guide roller (8) are connected by chain drive. The first guide roller (6) is connected to the pressure roller (5) located below it by chain drive, and the second guide roller (8) is connected to the pressure roller (5) located below it by chain drive.
4. A film cutting device according to any one of claims 1-3, characterized in that: The cutter (71) has a single-sided cutting edge with the cutting edge close to the inside of the groove (61).