High-protection thin film roll slitting chuck
By using flexible protective rings and arc-shaped abutment blocks in the film roll cleavage, combined with the limiting assembly and movable plate, the damage and slipping of the paper roll core by the mechanical expansion and tightening chuck is solved, and high protection is achieved and stable limiting effect.
Patent Information
- Application Number
- CN202421166027.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the film slitting process, mechanical expansion and tightening chucks can easily lead to the inner wall of the paper roll core breaking, scraping and slipping, affecting the limiting effect.
A high-protective film roll slitting chuck was designed, with a protective ring and arc-shaped abutment block made of flexible materials, combining the limiting assembly and movable plate to avoid stress concentration and slippage, ensuring that the chuck and paper roll core are stable contact.
It effectively prevents damage to the paper roll core and disengages the chuck, ensures the limiting effect, and improves the safety and accuracy of the slitting process.
Smart Images
Figure CN222309005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film slitting, in particular to a high-protective film roll slitting chuck. Background Art
[0002] BOPP film is usually several microns to more than ten microns thick. As the dielectric material of film capacitors, it is widely used in new energy vehicles, photovoltaics, wind power, power electronics, household appliances and other fields. After the film is formed and rolled, it needs to be cut by a slitting machine, and the paper roll core needs to be fixed by a chuck during cutting.
[0003] Among them, mechanical expansion chucks are widely used in the film slitting field due to their high cost performance.
[0004] At present, the mechanical expansion chuck expands the inner wall of the paper roll core through three expansion plates distributed in a circular array to achieve the position limitation of the paper roll core and the film. However, the expansion plates are made of rigid materials, and the contact area with the inner wall of the paper roll core is small, and the pressure is large, which can easily cause the inner wall of the paper roll core to break and deform, and the edge of the expansion plates can easily scratch the inner surface of the paper roll core. In addition, the expansion plates and the paper roll core are prone to slippage, which affects the position limitation effect. In view of this, we propose a highly protective film roll slitting chuck. Utility Model Content
[0005] The purpose of the embodiment of the utility model is to provide a highly protective film roll slitting chuck, which solves the problem that the existing slitting chuck easily causes damage to the paper roll core.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A highly protective film roll slitting chuck comprises a baffle, one end of the baffle is fixedly connected to a connecting column, a plurality of abutment blocks are movably connected inside the connecting column, a protective ring is sleeved on the outer peripheral wall of the connecting column, and one end of the abutment block can penetrate the connecting column and contact the inner wall of the protective ring;
[0008] The protective ring is made of flexible material.
[0009] Preferably, a connecting block is fixedly connected to the side of the abutment block away from the baffle, and one end of the connecting block away from the abutment block passes through the connecting column and is connected to a limiting assembly, and the maximum vertical distance between the outer end of the limiting assembly and the rotating shaft is greater than the maximum vertical distance between the outer end of the abutment block and the rotating shaft.
[0010] Preferably, an end plate is fixedly connected to one end of the connecting column away from the baffle, a chamfer is provided on one end of the end plate away from the connecting column, and a maximum diameter of the end plate is greater than a diameter of the connecting column.
[0011] Preferably, the connecting column is provided with a second sliding groove for the connecting block to slide, the inner wall of the end plate is provided with a through groove for the limiting assembly to slide, and one end of the through groove and the outside penetrate the outer peripheral wall of the end plate.
[0012] Preferably, the limiting assembly comprises a connecting plate, one side of the connecting plate is fixedly connected to the connecting block, and one end of the connecting plate away from the polygonal block is connected to a movable plate via a spring.
[0013] Preferably, one end of the movable plate is arc-shaped, and the other end is fixedly connected with a sliding rod, and the sliding rod is slidably connected to the inner wall of the connecting plate.
[0014] Preferably, a first sliding groove for sliding the abutment block is provided in the connection column, a protrusion is connected to the inner wall of the first sliding groove, grooves are provided on both sides of the abutment block, and the inner wall of the groove is slidably connected to the protrusion.
[0015] Preferably, a rotation groove is provided at the center of the connecting column, a polygonal block is rotatably connected in the rotation groove, one end of the polygonal block is fixedly connected to a rotation shaft, and the rotation shaft is rotatably connected to the baffle;
[0016] One end of the abutment block extends into the rotation groove.
[0017] Preferably, both ends of the abutment block are arc-shaped.
[0018] Preferably, the protective ring is made of soft rubber.
[0019] By means of the above technical solution, the utility model provides a highly protective film roll slitting chuck, which has at least the following beneficial effects:
[0020] (1) The highly protective film roll slitting chuck is provided with a sliding abutment block, and the end of the abutment block is arc-shaped, which can prevent stress concentration from causing damage to the structure. By providing a rubber protective ring, the chuck can be prevented from causing damage to the paper roll core, and at the same time, slippage between the chuck and the paper roll core can be prevented, thereby ensuring the limiting effect.
[0021] (2) The highly protective film roll slitting chuck can stop one end of the protective ring by setting an end plate to prevent the protective ring from detaching from the chuck at will, while not hindering the removal of the protective ring. By setting a connecting plate, the movable plate can always stop one end of the protective ring to prevent the protective ring from axial movement after being expanded, thereby preventing it from detaching from the chuck body and ensuring the use effect of the chuck. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:
[0023] Figure 1It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0024] Figure 2 This is a schematic diagram of the structure of an embodiment of the utility model after removing the protective ring;
[0025] Figure 3 It is a cross-sectional view of the end plate in the embodiment of the utility model;
[0026] Figure 4 This is a schematic diagram of the second chute in the embodiment of the utility model;
[0027] Figure 5 A cross-sectional view of a connecting column in an embodiment of the utility model;
[0028] Figure 6 A schematic diagram of an embodiment of the utility model from one perspective;
[0029] Figure 7 This is a schematic diagram of a position limiting component in an embodiment of the present utility model;
[0030] Figure 8 This is a position relationship diagram of the abutment block and the limit assembly in the embodiment of the utility model;
[0031] Fig. 9 It is a schematic diagram of a preferred embodiment of the utility model.
[0032] In the figure: 1. baffle; 2. connecting column; 201. rotating groove; 202. protrusion; 203. second sliding groove; 3. rotating shaft; 4. abutment block; 401. groove; 5. protective ring; 6. end plate; 601. through groove; 7. limit assembly; 701. movable plate; 702. sliding rod; 703. connecting plate; 704. spring; 8. connecting block; 9. polygonal block.
[0033] Specific embodiment
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] See also Figure 1-Figure 9 , a technical solution provided by the utility model:
[0036] A highly protective film roll slitting chuck comprises a baffle 1, a rotating shaft 3 is rotatably connected to the axis of the baffle 1, a connecting column 2 is fixedly connected to one end of the baffle 1, a plurality of abutment blocks 4 are slidably connected inside the connecting column 2, and the plurality of abutment blocks 4 are distributed in a circular array with the axis of the rotating shaft 3 as the center, and the number of the abutment blocks 4 is preferably 3-5. The outer end of the abutment block 4 is arc-shaped to avoid stress concentration.
[0037] As an embodiment, the number of the abutment blocks 4 is three, and in this case, three first slide grooves are provided in the connection column 2, and the three first slide grooves are arranged in a circular array, respectively allowing three abutment blocks 4 to slide therein. One end of the first slide groove passes through the connection column 2, so that one end of the abutment block 4 can slide out of the connection column 2 to tightly limit the paper roll core. The two inner side walls of the first slide groove are fixedly connected with protrusions 202, and grooves 401 are provided on both sides of the abutment block 4. The inner wall of the groove 401 is slidably connected to the surface of the protrusion 202, so that the abutment block 4 can be limited to prevent the abutment block 4 from detaching from the connection column 2.
[0038] Furthermore, a circular rotation groove 201 is opened at the center of the connecting column 2, and a polygonal block 9 is rotatably connected in the rotation groove 201. The cross-section of the polygonal block 9 is a regular polygon, and the number of corners of the regular polygon is the same as the number of the abutment block 4.
[0039] Figure 5 In the embodiment provided, the cross section of the polygonal block 9 is an equilateral triangle, the three vertices of the equilateral triangle are all chamfered and are in contact with the inner wall of the rotating groove 201, and the center of the polygonal block 9 is fixedly connected to the rotating shaft 3. One end of the abutment block 4 extends into the rotating groove 201 and is set in an arc shape, so when the polygonal block 9 rotates a certain angle with the rotating shaft 3, its vertex will contact one end of the abutment block 4 and push the abutment block 4 to the outside of the connecting column 2.
[0040] Fig. 9 In the provided embodiment, the number of the abutment blocks 4 is four, and the cross-section of the polygonal block 9 is square, which can increase the contact area between the clamping block and the paper roll core, thereby achieving a better limiting effect.
[0041] The abutment block 4 of a rigid structure can easily break the paper roll core and can easily cause slippage with the paper roll core. To this end, in this embodiment, a protective ring 5 is sleeved on the outer peripheral wall of the connecting column 2, and one end of the abutment block 4 can penetrate the connecting column 2 and contact the inner wall of the protective ring 5. The protective ring 5 is made of a flexible material, preferably soft rubber. The protective ring 5 made of soft rubber has good elasticity, softness and wear resistance. After the abutment block 4 moves to the outside of the connecting column 2, it will open the protective ring 5 outward so that the outer wall of the protective ring 5 contacts the paper roll core, thereby avoiding scratches on the paper roll core. At the same time, due to the high elasticity of the rubber protective ring 5, it will deform after contacting the paper roll core, increasing the contact area between it and the inner wall of the paper roll core, avoiding stress concentration, and not easily causing the paper roll core to break and deform. At the same time, it also increases the friction between the two, preventing slippage between the two, and ensuring the limiting effect.
[0042] The rubber protective ring 5 will age and deform after use, and is easily damaged by external sharp structures.
[0043] In order to facilitate the replacement of the protective ring 5, an end plate 6 is fixedly connected to the end of the connecting column 2 away from the baffle 1, and a chamfer is provided on the end of the end plate 6 away from the connecting column 2, so as to facilitate the paper roll core to be put on the chuck. The maximum diameter of the end plate 6 is larger than the diameter of the connecting column 2, so that there is a certain height difference between the outer circumference of the end plate 6 and the outer circumference of the connecting column 2, thereby stopping one end of the protective ring 5 to prevent the protective ring 5 from detaching from the chuck at will. The height difference between the end plate 6 and the connecting column 2 is not greater than half the thickness of the protective ring 5, so that the protective ring 5 can be detached from the end plate 6 after a certain deformation, reducing the difficulty of disassembling the protective ring 5.
[0044] In order to prevent the protective ring 5 from being separated from the chuck due to being stretched during use, a connecting block 8 is fixedly connected to the side of the abutment block 4 away from the baffle 1. The end of the connecting block 8 away from the abutment block 4 passes through the connecting column 2 and is connected to the limiting assembly 7. The maximum vertical distance between the outer end of the limiting assembly 7 and the rotating shaft 3 is greater than the maximum vertical distance between the outer end of the abutment block 4 and the rotating shaft 3. There is a spacing between the outer end of the limiting assembly 7 and the outer end of the abutment block 4, and the spacing is not less than the thickness of the protective ring 5. When the abutment block 4 moves outward, the limiting assembly 7 will be synchronously driven to move through the connecting block 8, so that the limiting assembly 7 can always stop one end of the protective ring 5 to prevent the protective ring 5 from axial movement after being stretched.
[0045] See also Figure 3 and Figure 4 The connecting column 2 is provided with a second slide groove 203 for the connecting block 8 to slide, and the inner wall of the end plate 6 is provided with a through groove 601 for the limit assembly 7 to slide, which facilitates the movement of the connecting block 8 and the limit assembly 7 and makes the structure more compact. One end of the through groove 601 and the outside penetrate the outer peripheral wall of the end plate 6, so that the limit assembly 7 can move to the outside of the end plate 6.
[0046] See also Figure 7 As shown in FIG8 , the limiting assembly 7 includes a connecting plate 703, one side of which is fixedly connected to the end of the connecting block 8 away from the abutting block 4, and the end of the connecting plate 703 away from the polygonal block 9 is connected to the movable plate 701 through a spring 704, so that the movable plate 701 and the connecting plate 703 are in an elastically retractable state, thereby preventing the movable plate 701 and the inner wall of the paper roll core from being damaged due to excessive pressure. The end of the movable plate 701 away from the connecting plate 703 is arc-shaped to prevent stress concentration from damaging the inner wall of the paper roll core. The other end of the movable plate 701 is fixedly connected to a sliding rod 702, which is slidably connected to the inner wall of the connecting plate 703, and the spring 704 is sleeved on the outside of the sliding rod 702. By setting the sliding rod 702, the movable plate 701 and the spring 704 can be limited to avoid the angle of the movable plate 701 and the spring 704 from being offset.
[0047] When the high-protective film roll slitting chuck of the utility model is used, the paper roll core is sleeved on the chuck, and the inner peripheral wall of the paper roll core contacts the outer peripheral wall of the protective ring 5. When the rotating shaft 3 rotates, it will synchronously drive the polygonal block 9 fixedly connected thereto to rotate. After the polygonal block 9 rotates a certain angle with the rotating shaft 3, its top corner will contact one end of the abutment block 4 and push the abutment block 4 to the outside of the connecting column 2. After the abutment block 4 moves to the outside of the connecting column 2, it will open the protective ring 5 outward, so that the outer wall of the protective ring 5 contacts the paper roll core, and the inner wall of the paper roll core is expanded and limited under pressure. In the process of the movement of the abutment block 4, the connecting plate 703 is synchronously driven to move through the connecting block 8, and the connecting plate 703 drives the movable plate 701 to move through the spring 704, so that the movable plate 701 can always stop one end of the protective ring 5 to prevent the protective ring 5 from axial movement after being expanded. After the outer end of the movable plate 701 contacts the inner wall of the paper roll core, the connecting plate 703 continues to move, which compresses the spring 704 and prevents the movable plate 701 from damaging the inner wall of the paper roll core.
[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0049] 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 high-protective film roll slitting chuck, comprising a baffle (1), characterized in that: One end of the baffle (1) is fixedly connected to a connecting column (2), a plurality of abutment blocks (4) are movably connected inside the connecting column (2), a protective ring (5) is sleeved on the outer peripheral wall of the connecting column (2), and one end of the abutment block (4) can penetrate the connecting column (2) and contact the inner wall of the protective ring (5); The protective ring (5) is made of flexible material.
2. The high protection film roll slitting chuck according to claim 1, characterized in that: A connecting block (8) is fixedly connected to the side of the abutment block (4) away from the baffle (1); one end of the connecting block (8) away from the abutment block (4) passes through the connecting column (2) and is connected to the limiting assembly (7); the maximum vertical distance between the outer end of the limiting assembly (7) and the rotating shaft (3) is greater than the maximum vertical distance between the outer end of the abutment block (4) and the rotating shaft (3).
3. The high protection film roll slitting chuck according to claim 2, characterized in that: An end plate (6) is fixedly connected to one end of the connecting column (2) away from the baffle (1); a chamfer is provided on the end of the end plate (6) away from the connecting column (2); and the maximum diameter of the end plate (6) is greater than the diameter of the connecting column (2).
4. The high protection film roll slitting chuck according to claim 3, characterized in that: The connecting column (2) is provided with a second sliding groove (203) for the connecting block (8) to slide, and the inner wall of the end plate (6) is provided with a through groove (601) for the limiting assembly (7) to slide, and one end of the through groove (601) penetrates the outer peripheral wall of the end plate (6) with the outside.
5. The high protection film roll slitting chuck according to claim 2, characterized in that: The limiting assembly (7) comprises a connecting plate (703), one side of which is fixedly connected to the connecting block (8), and one end of the connecting plate (703) away from the polygonal block (9) is connected to a movable plate (701) via a spring (704).
6. The high protection film roll slitting chuck according to claim 5, characterized in that: One end of the movable plate (701) is arc-shaped, and the other end is fixedly connected to a sliding rod (702), and the sliding rod (702) is slidably connected to the inner wall of the connecting plate (703).
7. The high protection film roll slitting chuck according to claim 1, characterized in that: A first sliding groove for the abutting block (4) to slide is provided in the connecting column (2), a protrusion (202) is connected to the inner wall of the first sliding groove, grooves (401) are provided on both sides of the abutting block (4), and the inner wall of the groove (401) is slidably connected to the protrusion (202).
8. The high protection film roll slitting chuck according to claim 5, characterized in that: A rotation groove (201) is provided at the center of the connecting column (2), a polygonal block (9) is rotatably connected in the rotation groove (201), one end of the polygonal block (9) is fixedly connected to a rotation shaft (3), and the rotation shaft (3) is rotatably connected to the baffle (1); One end of the abutment block (4) extends into the rotation groove (201).
9. The high protection film roll slitting chuck according to any one of claims 1 to 8, characterized in that: Both ends of the abutment block (4) are arc-shaped.
10. The high protection film roll slitting chuck according to any one of claims 1 to 8, characterized in that: The protective ring (5) is made of soft rubber.