Cutting device for PVC (polyvinyl chloride) film
By designing a PVC film cutting device controlled by cross frame rails and elastomeric rods, the problems of high cost and low efficiency in the production of PVC films in the prior art are solved, and the flexibility and efficient cutting at different heights are achieved, reducing the efficiency of cutting, Reliance on the compression roller.
Patent Information
- Application Number
- CN202420868142.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-24
AI Technical Summary
In the production of existing PVC films, in order to prevent wrinkles, high-cost compression rollers and multiple cylinders are needed to cooperate with each other. If a certain cylinder cannot be used, the entire cutting mechanism will stop operating, affecting the processing efficiency.
A PVC film cutting device was designed to realize the height control of the cutting knife and the self-stretching of the PVC film through components such as horizontal frame rails, extension springs, clamping blocks, arc-shaped clamps and elastic body rods, thereby avoiding the height control of the cutting knife and the self-stretching of the PVC film. Reliance on the compression rollers, the deformation of the arc-shaped clip and the elastic rod control the position of the cutting knife, forming an isosceles triangle structure to complete the cutting.
It realizes that there is no need to change the cutting knife length during the cutting process of PVC films of different heights, which improves the practicality of the device, and achieves tight cutting of the PVC film through the arc-shaped arch of the elastomeric rod, reducing costs and avoiding pressure. The extrusion of the tight roller improves processing efficiency.
Smart Images
Figure CN222155711U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PVC film production, in particular to a PVC film cutting device. Background Art
[0002] PVC film is a thin film made of PVC material. The main component of PVC is polyvinyl chloride, which is slightly yellow and translucent and shiny. The transparency is better than polyethylene and polypropylene, but worse than polystyrene. Depending on the amount of additives used, it is divided into soft and hard polyvinyl chloride. Soft products are soft and tough, and feel sticky. The hardness of hard products is higher than low-density polyethylene, but lower than polypropylene, and whitening will occur at the bends. Common products: plates, pipes, soles, toys, doors and windows, wire sheaths, stationery, etc. It is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene. PVC film is often used in the field of packaging processing.
[0003] In the prior art, in order to prevent wrinkles from appearing on the PVC film during production and processing, a pressure roller is generally used to shrink and extrude the PVC film, and the cutting of the PVC decorative film can only be completed through the cooperation of multiple cylinders. Not only is the device cost high, but once a cylinder cannot be used, the entire cutting mechanism cannot operate, thus affecting the processing efficiency. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a cutting device for PVC film, which has the function of controlling the height of a cutter and can stretch the PVC film by itself during cutting without the need for other devices.
[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: the cutting device of the PVC film includes a transverse frame rail, a rectangular groove is provided on the upper surface of the transverse frame rail, an extension spring is fixedly installed in the middle of the inner side wall of the rectangular groove, a clamping block is fixedly installed at one end of the extension spring, a clamping portion is provided in the upper surface of the clamping block, a connecting bracket is movably clamped on the outer arc surface of the transverse frame rail, the front bottom of the connecting bracket is a hollow through structure, and both sides of the hollow structure of the connecting bracket are provided with clamping portions, grooves are provided on both sides of the upper surface of the connecting bracket, and transverse grooves are provided on the inner side wall of the groove, a through groove is provided in the middle of the upper surface of the connecting bracket, and is in the same plane as the rectangular groove on the upper surface of the transverse frame rail, and the clamping portions on both sides of the connecting bracket overlap with the two sides of the transverse frame rail.
[0006] Optionally, the transverse frame rail is composed of two rectangular plates connected by bolts, the number of extension springs on the inner wall of the rectangular groove is two, and they are distributed in a mirror-symmetrical manner, and one end of the clamping block passing through the through groove is connected to an arc-shaped clamp through a clamping portion.
[0007] Optionally, a bearing block is provided on the lower surface of the arc clamp, and a slot is provided on the surface of the arc clamp. An elastomeric rod is connected to the slot of the arc clamp, and the elastomeric rod is an arc-shaped structure. The arc clamp is controlled by the moving range of the two arc clamps under the influence of the extension deformation of the elastomeric rod, and the deformation of the elastomeric rod is sequentially squeezed by the primary skeleton and compressed by the secondary skeleton so that the distance of the connected cutting knife away from or close to the PVC film is controlled by the elastomeric rod. Therefore, during the cutting process of PVC films at different heights, there is no need to change the length of the cutting knife to carry out processing, thereby improving the practicability of the device.
[0008] Optionally, both sides of the elastomeric rod are movably clamped on the arc-shaped clamping piece, a protrusion is provided in the middle of the inner arc surface of the elastomeric rod, and both sides of the protrusion are movably connected to a primary skeleton through a rotating shaft.
[0009] Optionally, a secondary skeleton is movably connected to the middle of one side surface of the primary skeleton via a rotating shaft. The number of the secondary skeletons is two and they are distributed in a mirror-symmetrical manner on both sides of the connecting bracket. The edges of one side surface of the two secondary skeletons are commonly connected to a mounting block via a rotating shaft.
[0010] Optionally, a through groove is provided on the upper surface of the mounting block, and a cutting knife is slidably engaged inside the through groove on the surface of the mounting block.
[0011] Optionally, there are two supporting blocks, which are distributed in a mirror-symmetrical manner, and both of the two supporting blocks are slidably engaged in the groove. There are four arc-shaped clips, which are grouped in pairs. One of the arc-shaped clips in the two groups is fixedly connected to the connecting bracket, and the arc-shaped arch of the elastic rod will drive the angle of the connected primary skeleton upward, and the secondary skeleton also moves. Therefore, the top of the entire cutting knife is an "isosceles triangle", so that when it contacts the PVC film, the vertex of the triangle is changed by the arc-shaped arch of the elastic rod, and the PVC film is continuously squeezed downward on both sides, and the force is concentrated on the vertex of the triangle. The cutting of the PVC film is in a taut state, and the cutting can be completed without the squeezing of the pressure roller, thereby reducing costs.
[0012] The utility model provides a cutting device for PVC film, which has the following beneficial effects:
[0013] 1. The arc clamps are controlled by the moving range of the two arc clamps under the influence of the extension deformation of the elastic rod, and the deformation of the elastic rod is squeezed by the primary skeleton and compressed by the secondary skeleton in turn, so that the distance of the connected cutting knife away from or close to the PVC film is controlled. Therefore, during the cutting process of PVC films of different heights, there is no need to change the length of the cutting knife to carry out processing, thereby improving the practicality of the device.
[0014] 2. The arc-shaped arch of the elastic rod will drive the angle of the connected primary frame upward, and the secondary frame will also move. Therefore, the top of the entire cutting knife is an "isosceles triangle". When it contacts the PVC film, the vertex of the triangle is affected by the arc-shaped arch of the elastic rod. The PVC film is continuously squeezed downward so that the force on both sides is concentrated on the vertex of the triangle. The cutting of the PVC film is in a taut state, and the cutting can be completed without the squeezing of the pressing roller, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0016] Figure 1 It is a schematic diagram of the structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the disassembled cross-sectional structure of the utility model;
[0018] Figure 3 It is a schematic diagram of the side section structure of the utility model;
[0019] Figure 4 It is a partial structural schematic diagram of the utility model.
[0020] In the figure: 1. horizontal frame rail; 2. rectangular groove; 3. extension spring; 4. clamping block; 401. clamping part; 5. connecting bracket; 501. tightening part; 502. groove; 6. arc clamping part; 601. bearing block; 7. elastomeric rod; 701. raised part; 8. primary frame; 9. secondary frame; 10. mounting block; 11. cutting knife. DETAILED DESCRIPTION
[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0022] See also Figures 1 to 4The utility model provides a technical solution: a cutting device for PVC film, comprising a horizontal frame rail 1, a rectangular groove 2 is provided on the upper surface of the horizontal frame rail 1, an extension spring 3 is fixedly installed in the middle of the inner wall of the rectangular groove 2, a clamping block 4 is fixedly installed at one end of the extension spring 3, a clamping portion 401 is provided in the upper surface of the clamping block 4, a connecting bracket 5 is movably connected to the outer arc surface of the horizontal frame rail 1, the front bottom of the connecting bracket 5 is a hollow through structure, and both sides of the hollow structure of the connecting bracket 5 are provided with abutting portions 501, both sides of the upper surface of the connecting bracket 5 are provided with grooves 502, and the inner side wall of the groove 502 is provided with a transverse groove, A through groove is provided in the middle of the upper surface of the connecting bracket 5, and is in the same plane as the rectangular groove 2 on the upper surface of the transverse frame rail 1. The abutting parts 501 on both sides of the connecting bracket 5 overlap with the two sides of the transverse frame rail 1. The transverse frame rail 1 is composed of two rectangular plates connected by bolts. The number of extension springs 3 on the inner wall of the rectangular groove 2 is two, and they are distributed in a mirror-symmetrical manner. One end of the clamping block 4 passing through the through groove is connected to an arc-shaped clip 6 through the clamping part 401. A bearing block 601 is provided on the lower surface of the arc-shaped clip 6. A clamping groove is provided on the surface of the arc-shaped clip 6. An elastomer rod 7 is connected in the clamping groove of the arc-shaped clip 6. The elastomer rod 7 is an arc-shaped structure.
[0023] The arc clamp 6 is controlled by the moving range of the two arc clamps 6 under the influence of the extension deformation of the elastomeric rod 7, and the deformation of the elastomeric rod 7 is squeezed by the primary skeleton 8 and compressed by the secondary skeleton 9 in turn, so that the connected cutting knife 11 is controlled to move away from or close to the PVC film. Therefore, during the cutting process of PVC films of different heights, there is no need to change the length of the cutting knife 11 to carry out processing, thereby improving the practicability of the device.
[0024] Both sides of the elastomeric rod 7 are movably connected to the arc-shaped clamping piece 6, and a protrusion 701 is provided in the middle of the inner arc surface of the elastomeric rod 7. Both sides of the protrusion 701 are movably connected to the primary skeleton 8 through a rotating shaft. The middle of one side surface of the primary skeleton 8 is movably connected to the secondary skeleton 9 through a rotating shaft. The number of secondary skeletons 9 is two, and they are distributed in a mirror-symmetrical manner on both sides of the connecting bracket 5. The edges of one side surface of the two secondary skeletons 9 are commonly connected to a mounting block 10 through a rotating shaft. A through groove is provided on the upper surface of the mounting block 10, and a cutting knife 11 is slidably connected to the inside of the through groove on the surface of the mounting block 10. The number of bearing blocks 601 is two, and they are distributed in a mirror-symmetrical manner. The two bearing blocks 601 are both slidably clamped in the inside of the groove 502. The number of arc-shaped clamping pieces 6 is four, and they are grouped in pairs. One of the arc-shaped clamping pieces 6 in the two groups of arc-shaped clamping pieces 6 is fixedly connected to the connecting bracket 5.
[0025] The arc-shaped arch of the elastic rod 7 will drive the connected primary frame 8 to move upward, and the secondary frame 9 will also move. Therefore, the top of the entire cutting knife 11 is an "isosceles triangle". When it contacts the PVC film, the vertex of the triangle is affected by the arc-shaped arch of the elastic rod 7, and the PVC film is continuously squeezed downward so that the force on both sides is concentrated on the vertex of the triangle. The cutting of the PVC film is in a taut state, and the cutting can be completed without the squeezing of the pressing roller, thereby reducing costs.
[0026] In the utility model, the working steps of the device are as follows:
[0027] The arc clamp 6 is controlled to pass through the bearing block 601 at the bottom, and the bearing block 601 can slide in the horizontal frame rail 1. Since the arc clamps 6 are in groups of two, during the sliding process, after one of the arc clamps 6 is fixed, the other can still slide in the connecting bracket 5 after the connected cutting knife 11 contacts the PVC film. The moving range of the two arc clamps 6 is controlled by the arc clamp 6 under the influence of the extension deformation of the elastic rod 7. The deformation of the elastic rod 7 is squeezed by the primary skeleton 8 and compressed by the secondary skeleton 9 in turn, so that the distance between the connected cutting knife 11 and the PVC film is controlled. During the cutting process of PVC films of different heights, it is not necessary to change the length of the cutting knife 11 to perform processing. By contracting the arc-shaped clamp 6 inward, the elastic rod 7 is arched in an arc shape, which drives the connected primary frame 8 to move upward, and the secondary frame 9 also moves. Therefore, the top of the entire cutting knife 11 is an "isosceles triangle". When it contacts the PVC film, the vertex of the triangle is affected by the arc-shaped arch of the elastic rod 7, and the PVC film is continuously squeezed downward to concentrate the force on both sides to the vertex of the triangle. The cutting of the PVC film is in a taut state, and the cutting can be completed without the squeezing of the pressing roller.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A PVC film cutting device, comprising a horizontal frame rail member (1), characterized in that: The upper surface of the transverse frame rail (1) is provided with a rectangular groove (2), an extension spring (3) is fixedly installed in the middle of the inner side wall of the rectangular groove (2), a clamping block (4) is fixedly installed at one end of the extension spring (3), a clamping portion (401) is provided in the upper surface of the clamping block (4), a connecting bracket (5) is movably clamped on the outer arc surface of the transverse frame rail (1), the front bottom of the connecting bracket (5) is a hollow through structure, and both sides of the hollow structure of the connecting bracket (5) are provided with abutting portions (501), both sides of the upper surface of the connecting bracket (5) are provided with grooves (502), and the inner side wall of the groove (502) is provided with a transverse groove, a through groove is provided in the middle of the upper surface of the connecting bracket (5), and is in the same plane as the rectangular groove (2) on the upper surface of the transverse frame rail (1), and the abutting portions (501) on both sides of the connecting bracket (5) overlap with both sides of the transverse frame rail (1).
2. The PVC film cutting device according to claim 1, characterized in that: The transverse frame rail member (1) is composed of two rectangular plates connected by bolts, the number of the extension springs (3) on the inner side wall of the rectangular groove (2) is two and they are distributed in a mirror-symmetrical manner, and one end of the clamping block (4) passing through the through groove is connected to an arc-shaped clamping member (6) via a clamping portion (401).
3. The PVC film cutting device according to claim 2, characterized in that: A bearing block (601) is provided on the lower surface of the arc-shaped clamping member (6), a clamping groove is provided on the surface of the arc-shaped clamping member (6), an elastic rod (7) is connected in the clamping groove of the arc-shaped clamping member (6), and the elastic rod (7) is an arc-shaped structure.
4. The PVC film cutting device according to claim 3, characterized in that: Both sides of the elastic rod (7) are movably clamped on the arc-shaped clamping piece (6), a raised portion (701) is provided in the middle of the inner arc surface of the elastic rod (7), and both sides of the raised portion (701) are movably connected to the primary frame (8) via a rotating shaft.
5. The PVC film cutting device according to claim 4, characterized in that: A secondary frame (9) is movably connected to the middle of one side surface of the primary frame (8) via a rotating shaft. The number of the secondary frames (9) is two and they are distributed on both sides of the connecting bracket (5) in a mirror-symmetrical manner. The edges of one side surface of the two secondary frames (9) are movably connected to a mounting block (10) via a rotating shaft.
6. The PVC film cutting device according to claim 5, characterized in that: A through groove is provided on the upper surface of the installation block (10), and a cutting knife (11) is slidably engaged inside the through groove on the surface of the installation block (10).
7. The PVC film cutting device according to claim 6, characterized in that: The number of the supporting blocks (601) is two and they are distributed in a mirror-symmetrical manner. The two supporting blocks (601) are both slidably engaged in the interior of the groove (502). The number of the arc-shaped clamping members (6) is four and they are grouped in pairs. One of the arc-shaped clamping members (6) in the two groups of arc-shaped clamping members (6) is fixedly connected to the connecting bracket (5).