A diaphragm slitting system

Abstract

The application relates to the technical field of diaphragm production, in particular to a diaphragm slitting system which comprises a rack, a transmission roller assembly, a mounting platform, a mounting seat and a cutter assembly. The transmission roller assembly is rotatably installed on the rack and used for conveying the diaphragm. The mounting platform is installed on the rack. The mounting seat has opposite first and second mounting surfaces along a first direction. The first mounting surface is provided with a first mounting groove, and the second mounting surface is installed on the mounting platform. The cutter assembly is used for slitting the diaphragm. At least part of the cutter assembly is embeddedly installed in the first mounting groove. Since the first mounting groove is arranged on the mounting seat of the cutter assembly, the installation, accurate positioning and limiting of the cutter assembly are facilitated, the cutter assembly and the transmission roller assembly can keep a safe distance, the cutter assembly is prevented from being inaccurately installed or being displaced under the action of vibration and from interfering with the transmission roller assembly in space, the safety of the transmission roller assembly is protected, and therefore the quality of the diaphragm and the slitted product is effectively ensured.

Description

Technical Field

[0001] This application relates to the field of diaphragm manufacturing technology, and more specifically to a diaphragm slitting system. Background Technology

[0002] The separator slitting system is one of the key pieces of equipment in lithium batteries. It is used to slit the separator to form products of a size that is convenient for cell packaging. However, the separator slitting system has many components, which can easily lead to failure of fit between different components or spatial interference problems due to the accumulation of assembly errors or vibration displacement, thereby affecting the quality of the separator and the slitting products. Utility Model Content

[0003] This application provides a diaphragm slitting system that can at least partially solve or improve the above-mentioned technical problems.

[0004] This application provides a diaphragm slitting system, comprising:

[0005] frame;

[0006] A drive roller assembly, rotatably mounted on the frame, is used to convey diaphragms;

[0007] The mounting platform is installed on the rack;

[0008] A mounting base, the mounting base having opposing first and second mounting surfaces along a first direction, the first mounting surface having a first mounting groove, and the second mounting surface being mounted on the mounting platform; and

[0009] A cutting assembly for cutting the diaphragm; at least a portion of the cutting assembly is embedded in the first mounting groove.

[0010] In some optional embodiments, the first mounting groove includes a first groove and a second groove that are interconnected, the first groove and the second groove being arranged sequentially along the first direction, and the first groove being disposed close to the first mounting surface; the second groove is provided with a guide slope, the guide slope being used to guide the cutter assembly to be embedded and to limit its downward movement depth.

[0011] In some alternative embodiments, the first channel is constructed as a through channel.

[0012] In some alternative embodiments, the guide ramp is inclined inward along the direction from the first mounting surface to the second mounting surface.

[0013] In some optional embodiments, the tilt angle of the guide ramp relative to the first direction ranges from 2° to 6°.

[0014] In some optional embodiments, the diaphragm slitting system further includes a slider and a slide rail, the slide rail extending along a second direction and mounted on the mounting platform, the slider being movably mounted on the slide rail, and a second mounting surface having a second mounting groove, with at least a portion of the slider being embedded within the second mounting groove.

[0015] The second direction is perpendicular to the first direction.

[0016] In some optional embodiments, the drive roller assembly includes a first drive roller and a second drive roller arranged sequentially along a first direction, and the cutting end of the cutter assembly is located at the center of the roller gap between the first drive roller and the second drive roller; the diaphragm cutting system further includes a drive assembly, the output end of which is connected to the slider and is used to drive the cutter assembly to reciprocate within the center position along the second direction to adjust the cutting position.

[0017] In some optional embodiments, the diaphragm slitting system further includes a defect scanning component for detecting defects in the diaphragm; the frame is provided with a third mounting surface, the third mounting surface is provided with a third mounting groove, and the defect scanning component is at least partially embedded in the third mounting groove.

[0018] In some optional embodiments, there are multiple third mounting slots, and the multiple third mounting slots are arranged in a matrix array on the third mounting surface.

[0019] In some optional embodiments, the third mounting groove is a waist-shaped groove, and the defect scanning component is engaged with the waist-shaped groove by fasteners to adjust the mounting position of the defect scanning component on the third mounting surface.

[0020] According to the diaphragm slitting system in this embodiment, the first mounting groove on the mounting base of the cutter assembly facilitates the installation of the cutter assembly and provides precise positioning and limiting of the cutter assembly, ensuring a safe distance between it and the drive roller assembly. This avoids inaccurate installation of the cutter assembly or displacement under vibration, preventing spatial interference between the cutter assembly and the drive roller assembly, thus protecting the safety of the drive roller assembly. This effectively ensures the quality of the diaphragm and the slitting product, while the compact design reduces the risk of failure of multiple components. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the diaphragm slitting system in one embodiment;

[0022] Figure 2 This is a schematic diagram of a portion of the diaphragm slitting system in one embodiment, showing a first angle.

[0023] Figure 3 This is a schematic diagram of a second angle of a portion of the diaphragm slitting system in one embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of the first mounting slot in one embodiment;

[0025] Figure 5 This is a schematic diagram of a third angle of a partial structure of the diaphragm slitting system in one embodiment;

[0026] Figure 6 This is a schematic diagram of the structure of the third mounting surface in one embodiment.

[0027] Wherein: 100, frame; 110, third mounting surface; 111, third mounting groove; 200, drive roller assembly; 210, first drive roller; 220, second drive roller; 300, mounting platform; 400, mounting base; 410, first mounting surface; 411, first mounting groove; 4111, first groove body; 4112, second groove body; 4113, guide slope; 420, second mounting surface; 421, second mounting groove; 500, cutter assembly; 600, slider; 700, slide rail; 800, defect scanning assembly; 900, unwinding mechanism;

[0028] F1, first direction; F2, second direction. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0030] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0031] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0032] The separator slitting system is a key piece of equipment in the production of new energy devices such as lithium batteries and capacitors. It is mainly used to precisely slit wide base films (such as polyethylene, polypropylene, ceramic coated separators, etc.) into narrow products of a specified width to meet the packaging requirements of cells of different specifications.

[0033] A diaphragm slitting system generally includes an unwinding mechanism, a drive roller assembly, a cutter assembly, a winding mechanism, a frame, and an installation platform. The unwinding mechanism carries large-diameter diaphragm raw materials and is used to provide diaphragm raw materials. The drive roller assembly includes multiple drive rollers, tension rollers, etc., for the smooth transport of the diaphragm, and the tension rollers prevent the diaphragm from wrinkling during transport. The cutter assembly is used to slit the diaphragm into narrow products of a specified width. The winding mechanism is used to wind the slit narrow diaphragm into finished rolls.

[0034] To ensure the quality of the diaphragm and prevent defective products from being used in the next production process (such as cell packaging), the diaphragm slitting system also includes a defect scanning component. The defect scanning component includes a scanning lens and a scanning bracket. The scanning bracket is mounted on the frame to support the scanning lens. The scanning lens is used to obtain the surface quality of the diaphragm during the transmission process. The field of view of the scanning lens is generally set between the cutter assembly and the unwinding mechanism.

[0035] To clearly describe the diaphragm slitting system and its components, this paper defines three mutually perpendicular directions based on the structure of the diaphragm slitting system: a first direction and a second direction. For example, the first direction refers to... Figure 1 The vertical and secondary directions of the diaphragm slitting system shown refer to... Figure 1 The left and right directions of the diaphragm slitting system shown in the figure.

[0036] Because the diaphragm slitting system targets diaphragms with a thickness of 6μm-25μm and a relatively small size, the relative positions of the components within the system must be highly precise. Even slight variations in position can cause problems with the fit between components or lead to spatial interference. For example, interference between the cutter assembly and the drive roller assembly can damage the surface finish of the drive rollers, thus affecting the surface quality of the diaphragm. However, assembly errors are unavoidable in multi-component systems. Furthermore, vibrations during operation can cause displacement and spatial interference. Additionally, the significant differences in thermal expansion coefficients among the components can create deformation gaps that affect slitting accuracy and roller surface safety.

[0037] To address the aforementioned technical problems, this application provides a diaphragm slitting system, which aims to install, position, and limit the various components through multiple mounting slots. In particular, it solves the problem that dynamic displacement caused by mechanical vibration between the existing cutter assembly and drive roller assembly leads to periodic contact between the slitting end of the cutter assembly and the roller surface, resulting in cuts on the roller surface.

[0038] Please see Figures 1 to 6 The diaphragm slitting system includes a frame 100, a drive roller assembly 200, a mounting platform 300, a mounting base 400, and a cutter assembly 500. The drive roller assembly 200 is rotatably mounted on the frame 100 for conveying the diaphragm; the mounting platform 300 is mounted on the frame 100; the mounting base 400 has a first mounting surface 410 and a second mounting surface 420 along a first direction F1, the first mounting surface 410 having a first mounting groove 411, and the second mounting surface 420 being mounted on the mounting platform 300; the cutter assembly 500 is located downstream of the unwinding mechanism 900 for slitting the diaphragm; at least a portion of the cutter assembly 500 is embedded in the first mounting groove 411.

[0039] It should be noted that the term "downstream" refers to a stage in continuous production that occurs after a previous production stage, i.e., the cutting assembly 500 cuts the conveyed diaphragm after the unwinding mechanism 900 unwinds it.

[0040] The first mounting slot 411 helps to accurately install the cutter assembly 500 and limits the cutter assembly 500, which can overcome the displacement caused by mechanical vibration, avoid spatial interference between the cutter assembly 500 and the roller surface, thereby protecting the roller surface from damage, effectively improving the stability and reliability of the system, and ensuring that the slitting process is efficient and safe.

[0041] In addition, the installation distance between the traditional cutter assembly 500 and the drive roller assembly 200 located after it is insufficient (usually <5mm). When the equipment is running at high speed (>150m / min), the dynamic displacement caused by mechanical vibration can reach ±2mm, causing the cutter cutting position to make periodic contact with the roller surface, which can easily cause the roller surface to be cut.

[0042] This application provides a first mounting groove 411 on the mounting base 400, so that the cutter assembly 500 is at least partially embedded in the first mounting groove 411. Since the first mounting groove 411 extends along the first direction F1, the mounting position of the cutter assembly 500 moves downward, thereby increasing the mounting distance between the cutter assembly 500 and the drive roller (≥10mm) without changing the position of other components (such as the drive roller assembly 200) in the diaphragm slitting system. This provides a safe and reliable initial parameter setting for the slitting process. Even if the cutter assembly 500 is displaced due to vibration, it still maintains a safe distance from the roller surface, thereby reducing spatial interference between the cutter assembly 500 and the roller surface and protecting the roller surface. The first mounting groove 411 can also improve the compactness of the diaphragm slitting system structure.

[0043] Please see Figure 4 In some embodiments, the first mounting groove 411 includes a first groove body 4111 and a second groove body 4112 that are interconnected. The first groove body 4111 and the second groove body 4112 are arranged sequentially along a first direction F1, and the first groove body 4111 is located close to the first mounting surface 410. The second groove body 4112 is provided with a guide slope 4113, which is used to guide the cutter assembly 500 to be embedded and limit its downward movement depth. The distance from the bottom of the guide slope 4113 to the first mounting surface 410 is the downward movement depth. The downward movement depth is determined according to specific usage requirements, that is, to ensure that the installation distance between the cutter assembly 500 and the transmission roller is ≥10mm. For example, the downward movement depth can be 8±0.05mm.

[0044] In some embodiments, the first groove 4111 is configured as a through groove, meaning that the first groove 4111 extends along the first direction F1, and its central axis is a straight line parallel to the first direction F1. The first groove 4111 provides installation space and positioning for the cutter assembly 500, thereby reducing assembly difficulty and improving assembly efficiency. During installation, the cutter assembly 500 is first guided through the first groove 4111 and then by the guide ramp 4113 of the second groove 4112, and is precisely installed within the second groove 4112.

[0045] In some embodiments, the guide slope 4113 is inclined inward along the direction from the first mounting surface 410 to the second mounting surface 420, that is, inclined inward toward the center line of the second groove 4112, to form a trumpet-shaped structure that is larger at the top and smaller at the bottom (the size is larger near the first mounting surface 410 and smaller near the second mounting surface 420). The tightened groove structure guides and positions the cutter assembly 500 to ensure that the cutter assembly 500 is accurately installed.

[0046] In some embodiments, the inclination angle of the guide ramp 4113 relative to the first direction F1 ranges from 2° to 6°. The inclination angle of the guide ramp 4113 relative to the first direction F1 can be 2°, 3°, 4°, 5°, or 6°. For example, the inclination angle of the guide ramp 4113 relative to the first direction F1 can be 3°.

[0047] In some embodiments, the diaphragm slitting system further includes a slider 600 and a slide rail 700. The slide rail 700 extends along the second direction F2 and is mounted on the mounting platform 300. The slider 600 is movably mounted on the slide rail 700. The second mounting surface 420 is provided with a second mounting groove 421. At least a portion of the slider 600 is embedded in the second mounting groove 421, wherein the second direction F2 is perpendicular to the first direction F1.

[0048] The second mounting groove 421 further helps to ensure the installation distance between the cutter assembly 500 and the drive roller. By embedding the slider 600 in the second mounting groove 421, the distance between the mounting base 400, the slide rail 700, and the mounting platform 300 in the first direction F1 is reduced, thus reducing the volume occupied by the diaphragm slitting system in the first direction F1 and further improving the system's compactness. The slider 600 installed in the second mounting groove 421 can also limit the slider 600, preventing displacement of the slider 600 and the cutter assembly 500 under motion vibration. This helps to ensure the balance (or coincidence) of the center of gravity of the cutter assembly 500 with the center of gravity of the slider 600 and the slide rail 700, thereby improving the stability and safety of the movement of the cutter assembly 500 relative to the mounting platform 300.

[0049] In some embodiments, the drive roller assembly 200 includes a first drive roller 210 and a second drive roller 220 arranged sequentially along a first direction F1. The first drive roller 210 and the second drive roller 220 are arranged along a second direction F2 on the right side of the cutter assembly 500. The cutting end of the cutter assembly 500 is located at the center of the roller gap between the first drive roller 210 and the second drive roller 220, effectively preventing the cutting end from contacting the roller surface and ensuring a stable cutting process. The diaphragm cutting system also includes a drive assembly (not shown). The output end of the drive assembly is connected to the slider 600 and is used to drive the cutter assembly 500 to reciprocate within the center position along the second direction F2 to adjust the cutting position.

[0050] In some embodiments, the diaphragm slitting system further includes a defect scanning component 800, which is used to detect defects in the diaphragm. A third mounting surface 110 is provided on the frame 100, and a third mounting groove 111 is provided on the third mounting surface 110. The defect scanning component 800 is at least partially embedded in the third mounting groove 111. The defect scanning component 800 is used to scan defects on the diaphragm and install it in the third mounting groove 111. It can also be used for positioning during installation, reducing assembly difficulty and improving installation accuracy. Simultaneously, it can avoid dynamic interference with the mounting platform 300 that could affect the accuracy of detection. In conjunction with the first mounting groove 411 and the second mounting groove 421, it provides dual protection for the safe and stable operation of the system.

[0051] In some embodiments, multiple third mounting slots 111 are provided, and the multiple third mounting slots 111 are arranged in a matrix array on the third mounting surface 110. The arrangement of multiple third mounting slots 111 can enable omnidirectional positioning of the defect scanning component 800. In addition, the defect scanning component 800 can be installed in different third mounting slots 111 according to different diaphragm widths, etc., to improve the flexibility of the diaphragm cutting system.

[0052] Please see Figure 6 In some embodiments, the third mounting groove 111 is a waist-shaped groove, and the defect scanning component 800 is engaged with the waist-shaped groove by fasteners to adjust the mounting position of the defect scanning component 800 on the third mounting surface 110. The waist-shaped groove can extend along the second direction F2, thereby adjusting the position of the defect scanning component 800 in the second direction F2, or it can extend along the first direction F1, thereby adjusting the position of the defect scanning component 800 in the first direction F1.

[0053] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A diaphragm slitting system, characterized in that, include: frame; A drive roller assembly, rotatably mounted on the frame, is used to convey diaphragms; The mounting platform is installed on the rack; The mounting base has a first mounting surface and a second mounting surface opposite each other along a first direction. The first mounting surface is provided with a first mounting groove, and the second mounting surface is mounted on the mounting platform. as well as A cutting assembly for cutting the diaphragm; at least a portion of the cutting assembly is embedded in the first mounting groove.

2. The diaphragm slitting system according to claim 1, characterized in that, The first mounting groove includes a first groove body and a second groove body that are interconnected. The first groove body and the second groove body are arranged sequentially along the first direction, and the first groove body is arranged close to the first mounting surface. The second groove body is provided with a guide slope, which is used to guide the cutter assembly to be embedded and limit its downward movement depth.

3. The diaphragm slitting system according to claim 2, characterized in that, The first groove is constructed as a straight groove.

4. The diaphragm slitting system according to claim 2, characterized in that, The guide ramp is inclined inward along the direction from the first mounting surface to the second mounting surface.

5. The diaphragm slitting system according to claim 4, characterized in that, The angle of inclination of the guide ramp relative to the first direction ranges from 2° to 6°.

6. The diaphragm slitting system according to any one of claims 1-5, characterized in that, The diaphragm slitting system further includes a slider and a slide rail. The slide rail extends along a second direction and is mounted on the mounting platform. The slider is movably mounted on the slide rail. The second mounting surface is provided with a second mounting groove, and at least a portion of the slider is embedded in the second mounting groove. The second direction is perpendicular to the first direction.

7. The diaphragm slitting system according to claim 6, characterized in that, The transmission roller assembly includes a first transmission roller and a second transmission roller arranged sequentially along a first direction. The cutting end of the cutter assembly is located at the center of the roller gap between the first transmission roller and the second transmission roller. The diaphragm cutting system also includes a drive assembly. The output end of the drive assembly is connected to the slider and is used to drive the cutter assembly to reciprocate within the center position along the second direction to adjust the cutting position.

8. The diaphragm slitting system according to claim 1, characterized in that, The diaphragm slitting system further includes a defect scanning component for detecting defects in the diaphragm; the frame is provided with a third mounting surface and a third mounting groove, and the defect scanning component is at least partially embedded in the third mounting groove.

9. The diaphragm slitting system according to claim 8, characterized in that, The third mounting slot is provided in multiple ways, and the multiple third mounting slots are arranged in a matrix array on the third mounting surface.

10. The diaphragm slitting system according to claim 8 or 9, characterized in that, The third mounting slot is a waist-shaped slot, and the defect scanning component is engaged with the waist-shaped slot by fasteners to adjust the mounting position of the defect scanning component on the third mounting surface.

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