Wet-process diaphragm slitter edge guiding device

Abstract

The utility model belongs to the technical field of lithium battery diaphragm processing and manufacturing, and particularly discloses a wet diaphragm slitter edge guiding device which comprises a spiral ring guiding piece, a supporting rod and a sleeve, one end of the supporting rod is connected with the spiral ring guiding piece, the other end of the supporting rod is rotatably arranged in the sleeve, and the supporting rod and the sleeve are coaxially arranged; the spiral ring guide piece extends in a continuous spiral shape, a spiral structure with at least two ring layers is formed in a natural state, and a gap is formed between every two adjacent ring layers. According to the wet-process diaphragm slitter edge guiding device, through cooperative operation of the spiral ring guiding piece, the supporting rod and the sleeve, when the speed of a production line is too high or the width of a cut edge is large, the guiding effect on the diaphragm slitter edge can still be guaranteed, the diaphragm slitter edge is effectively prevented from derailing, and edge breaking and diaphragm breaking of the production line are avoided; and the adaptability of the guide device to different working conditions is enhanced while the diaphragm waste edge recovery quality and efficiency are guaranteed, and normal operation of actual production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragm processing and manufacturing, in particular to a wet-process diaphragm waste edge guiding device. Background Art

[0002] Lithium battery separators are one of the core components of lithium-ion batteries, and their performance directly impacts battery safety, energy density, and cycle life. Currently, lithium battery separator production primarily utilizes dry and wet processes, with the common process flow encompassing the following key steps: extrusion casting, sheet casting, stretching, heat treatment, winding, and slitting.

[0003] After the diaphragm is produced, due to material deformation or operating errors, the diaphragm edge is prone to width fluctuation and thickness deviation. The diaphragm needs to be trimmed to ensure product dimensional accuracy and neat edges.

[0004] Existing technology generally uses waste edge guide wheels to achieve continuous trimming. The process is as follows: After the trimming tool removes the diaphragm edge material, the guide groove structure of the guide wheel constrains the transmission direction of the waste edge material, and then the waste edge material is stably recovered by the winding equipment. However, in actual production, it has been found that when the production line speed is fast or the trimming width is large, the high speed operation or wide trimming width causes the restraining capacity of the guide groove to decrease. The trimmed edge material easily escapes the guide groove, resulting in broken edge and film on the production line, causing significant production capacity loss.

[0005] In summary, in the prior art, when the production line speed is fast or the cutting width is large, the cut edge material is easy to fall out of the guide groove, resulting in broken edges and films on the production line, causing significant production capacity loss. Utility Model Content

[0006] The utility model provides a wet-process diaphragm waste edge guide device, which can solve the problem of the wet-process diaphragm waste edge guide wheel in the prior art that when the production line speed is fast or the cutting width is large, the cut edge material is easy to fall out of the guide groove, resulting in broken edges and films on the production line, causing significant production capacity loss.

[0007] A wet-process diaphragm waste edge guide device comprises a spiral ring guide, a support rod and a sleeve, wherein one end of the support rod is connected to the spiral ring guide, the other end of the support rod is rotatably disposed in the sleeve, and the support rod and the sleeve are coaxially arranged;

[0008] The spiral ring guide extends in a continuous spiral shape, and forms a spiral structure with at least two ring layers in a natural state, with a spacing between adjacent ring layers.

[0009] Furthermore, in the spiral ring guide, the radial spacing between adjacent ring layers is 2-6 times the thickness of the ring layer.

[0010] Furthermore, in the spiral ring guide, the cross-section of each ring layer is polygonal or circular.

[0011] Furthermore, in the spiral ring guide, the cross-section of each ring layer is a polygon, and the number of sides of the polygon is 3-8.

[0012] Furthermore, the spiral ring guide is made of alloy material.

[0013] Furthermore, the spiral ring guide is made of shape memory alloy.

[0014] Furthermore, the spiral ring guide is in a straight line shape after being stretched.

[0015] Furthermore, the spiral ring guide and the support rod are connected by welding or integral molding.

[0016] Furthermore, the surface of the spiral ring guide is provided with a wear-resistant coating.

[0017] Furthermore, the outer surface of the sleeve is provided with threads.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention provides a wet-process diaphragm waste edge guide device, comprising a spiral ring guide, a support rod, and a sleeve. The spiral ring guide is used to guide the diaphragm waste edge, and the support rod is rotatably disposed within the sleeve. In actual use, the guide device is used as follows: After the film is normally threaded through the production line, the cutter cuts out the diaphragm waste edge, and the worker presses the diaphragm waste edge from the outermost end of the spiral ring guide into the ring layer at the center of the spiral ring guide, passing through the spiral ring guide and then causing the waste edge to be reeled up on the waste edge machine. This guide device is used in actual production, is easy to install and operate, and can fundamentally solve the problem of broken edges and film caused by mismatched diaphragm waste edge movement.

[0020] 2. In the present invention, a rotatable matching structure of the support rod and the sleeve is adopted, so that the support member has the function of free rotation in the sleeve, thereby forming a dynamic guide channel of the spiral ring guide member, effectively avoiding the problem of broken edges of the diaphragm waste edge caused by friction resistance during the continuous recovery process.

[0021] 3. In the present invention, due to the multi-ring spiral structure of the spiral ring guide and the rotatable matching structure of the support rod and the sleeve, the spiral ring guide can adapt to the conveying tension of the diaphragm waste edge, keep the diaphragm waste edge always running along the predetermined track, effectively avoid the risk of derailment, and ensure the continuity of the recovery operation.

[0022] 4. In the present invention, a spiral ring guide is used, and the operator can quickly press the waste edge of the diaphragm into the central ring layer of the spiral ring guide, thereby significantly improving the working efficiency.

[0023] 5. The utility model provides a wet-process diaphragm waste edge guiding device, which, through the coordinated operation of the spiral ring guide, the support rod and the sleeve, can still ensure the guiding effect on the diaphragm waste edge when the production line speed is too fast or the cutting width is large, effectively preventing the diaphragm waste edge from derailing and avoiding the breakage of the production line edge and film; while ensuring the quality and efficiency of the diaphragm waste edge recovery, the adaptability of the guiding device to different working conditions is enhanced, which is conducive to the normal operation of actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 This is a schematic structural diagram of the wet-process diaphragm waste edge guide device provided by the utility model;

[0026] Figure 2 This is a structural schematic diagram of the spiral ring guide provided by the utility model.

[0027] Explanation of the accompanying drawings: 1. spiral ring guide; 2. support rod; 3. sleeve; 4. waste edge installation notch. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific implementation methods.

[0029] like Figures 1 to 2 As shown, the utility model provides a wet-process diaphragm waste edge guide device, comprising a spiral ring guide 1, a support rod 2 and a sleeve 3, wherein one end of the support rod 2 is fixedly connected to the spiral ring guide 1, and the other end of the support rod 2 is rotatably installed in the sleeve 3, and the support rod 2 and the sleeve 3 are coaxially arranged;

[0030] The spiral ring guide 1 extends in a continuous spiral shape, forming a spiral structure with at least two ring layers in a natural state, and there is a gap between adjacent ring layers;

[0031] The installation and use process of the wet-process diaphragm waste edge guide device in actual production is as follows: after the production line passes the film normally, the lower cutter cuts out the diaphragm waste edge, and the operator presses the diaphragm waste edge from the outermost end of the spiral ring guide 1 into the central ring layer of the spiral ring guide 1, passes through it, and then leads the diaphragm waste edge to the waste edge machine for winding, and then installs the sleeve 3 to a suitable position on the production line, and matches its height with the winding position of the waste edge machine to complete the installation of the guide device and the guiding installation operation of the diaphragm waste edge.

[0032] After the actual application verification of the guide device, specifically, after a long period of edge trimming verification on the edge trimming machine, it was found that after using the device, there has never been a case of edge or film breakage due to mismatch of waste edge direction.

[0033] During the installation and use process of the wet-process diaphragm waste edge guide device in actual production, the installation position of the sleeve 3 is between the waste edge machine and the lower cutter mounting seat.

[0034] The spiral ring guide 1 extends in a continuous spiral shape, forming a spiral structure with at least 2 ring layers in a natural state; and a waste edge installation notch 4 is formed between the radial outermost end of the spiral ring guide 1 and the adjacent ring layer. This arrangement has the following advantages: First, by setting up the spiral ring guide 1 that extends in a continuous spiral shape, a spiral structure with multiple ring layers is formed, which effectively limits the guide path within a limited space, increases the contact area between the diaphragm waste edge and the spiral ring guide 1, and maintains the stability of the spiral ring guide 1 structure. In addition, the spiral structure can maintain the stability of the diaphragm waste edge guidance and avoid the occurrence of derailment problems; second, the waste edge installation notch 4 formed realizes the rapid installation of the diaphragm waste edge, so that the diaphragm waste edge can quickly enter the central ring layer of the spiral ring guide 1 through the waste edge installation notch 4, and enter The diaphragm waste edge can be quickly guided to ensure that the diaphragm waste edge is transported in an orderly manner during high-speed production, avoiding material accumulation or jamming; thirdly, since one end of the support rod 2 is fixedly connected to the spiral ring guide 1, the other end of the support rod 2 is rotatably installed in the sleeve 3, and the diaphragm waste edge is arranged in the central ring layer of the spiral ring guide 1, this design has adaptive characteristics and can be applied to production under different working conditions, reducing the need for manual intervention, and realizing the automatic connection of the entire process of diaphragm waste edge from output to winding, so that the guiding device can still maintain stable guidance under high-speed transmission conditions or wide cutting conditions, significantly reducing the frequency of production line shutdown maintenance.

[0035] The wet-process diaphragm waste edge guiding device can rotate arbitrarily in the sleeve 3 because the support rod 2 is rotatably installed in the sleeve 3, and the support rod 2 and the sleeve 3 are coaxially arranged. Based on this, the spiral ring guide 1 fixedly installed on the top of the support rod 2 can also rotate with the rotation of the support rod 2, thereby realizing universal adjustment of the direction of the diaphragm waste edge, better matching the need of the diaphragm waste edge to move back and forth.

[0036] The wet-process diaphragm waste edge guide device, through the structural innovation of the spiral ring guide 1 and the coordinated action of the spiral ring guide 1, the support rod 2 and the sleeve 3, can synergistically improve the production continuity and system reliability of the wet-process diaphragm production line, effectively avoid the risk of derailment, and improve operating efficiency.

[0037] like Figures 1 to 2 As shown, in some embodiments of the present invention, in the spiral ring guide 1, there is a spacing between adjacent ring layers, and the radial spacing between adjacent ring layers is 2-6 times the thickness of the ring layer;

[0038] In the spiral ring guide 1 , the radial spacing between adjacent ring layers is 2-6 times the thickness of the ring layer, that is, a better ring layer arrangement is achieved in a limited space, interlayer interference is avoided, and loose structure caused by excessive spacing can be prevented.

[0039] like Figures 1 to 2 As shown, in some embodiments of the present invention, in the spiral ring guide 1, the cross-sectional shape of each ring layer can be polygonal;

[0040] The cross-section of each ring layer is polygonal, and the edge structure forms a natural supporting skeleton, which improves the bending resistance and effectively reduces the deformation under the same load.

[0041] like Figures 1 to 2 As shown, in some embodiments of the present invention, in the spiral ring guide 1, the cross-sectional shape of each ring layer can be circular;

[0042] The cross-section of each ring layer is circular, and the circular streamlined profile eliminates stress concentration points and improves vibration attenuation efficiency.

[0043] like Figures 1 to 2 As shown, in some embodiments of the present invention, in the spiral ring guide 1, the cross-sectional shape of each ring layer can be a polygon, and the number of sides of the polygon can be 3-8;

[0044] In the spiral ring guide 1, the cross-sectional shape of each ring layer is a polygon, and the number of sides of the polygon is 3-8. This is because within this range, if the number of sides of the polygon is 3, the triangular cross-section forms a stable structure, and its torsional strength can be improved; if the number of sides of the polygon is 4, anisotropic strengthening can be achieved, and its bearing capacity is improved; if the number of sides of the polygon is 5-8, the number of sides increases and approaches a circular shape, and the compressive stability is improved. At the same time, the local strengthening characteristics of the polygonal edges are retained, and under the same load, the deformation amount is effectively reduced. In addition, within the range of 3-8, the processing and manufacturing cost of the spiral ring guide 1 is effectively reduced.

[0045] like Figures 1 to 2As shown, in some embodiments of the present invention, the material of the spiral ring guide 1 is an alloy material; the material of the spiral ring guide 1 is preferably a shape memory alloy;

[0046] The material of the spiral ring guide 1 is preferably a shape memory alloy, and its phase change characteristics are stable within the range of -150°C to 400°C.

[0047] By using shape memory alloy, the spiral ring guide 1 can automatically return to its original shape by presetting the phase transition temperature, thus realizing dynamic reconstruction of the guide path;

[0048] The material of the spiral ring guide 1 is preferably shape memory alloy, which also makes it have the advantages of environmental adaptability and long life.

[0049] like Figures 1 to 2 As shown, in some embodiments of the present invention, the spiral ring guide 1 is in a straight line shape after being stretched;

[0050] The spiral ring guide 1 is in a straight line after being stretched, that is, each ring layer of the spiral ring guide 1 adopts an integrated spiral design, thereby significantly reducing the risk of fracture caused by stress concentration.

[0051] like Figures 1 to 2 As shown, in some embodiments of the present invention, the spiral ring guide 1 and the support rod 2 are connected by welding;

[0052] Specifically, the outermost end of the spiral ring guide 1 is connected to the top of the support rod 2 by welding;

[0053] The radially outermost end of the spiral ring guide 1 is connected to the top of the support rod 2 by welding to form a continuous metal connection, ensuring its integrity, high production efficiency, low cost and good design flexibility;

[0054] In addition, an extension notch can be opened at the position where the top of the support rod 2 is connected to the radial outermost end of the spiral ring guide 1. The setting of the extension notch, combined with the waste edge installation notch 4, can reduce the difficulty of the diaphragm waste edge entering the central ring layer of the spiral ring guide 1, making it convenient for the operator to complete online edge changing and threading more quickly.

[0055] like Figures 1 to 2 As shown, in some embodiments of the present invention, the spiral ring guide 1 and the support rod 2 are connected in an integrally formed manner;

[0056] Specifically, the outermost end of the spiral ring guide 1 is connected to the top of the support rod 2 in an integrally formed manner;

[0057] The outermost end of the spiral ring guide 1 is connected to the top of the support rod 2 in an integrally formed manner, requiring no secondary assembly. The internal stress is evenly distributed, avoiding fatigue failure at the connection. The overall structure has excellent vibration fatigue resistance.

[0058] like Figures 1 to 2 As shown, in some embodiments of the present invention, the surface of the spiral ring guide 1 is coated with a wear-resistant coating;

[0059] The wear-resistant coating includes but is not limited to one of a carbide coating, a ceramic coating, and a metal ceramic coating;

[0060] In the continuous production of the diaphragm, since the waste edge of the diaphragm is in contact with the spiral ring guide 1 for a long time, coating the surface of the spiral ring guide 1 with a wear-resistant coating has the following advantages: first, improving its wear resistance, extending its service life, and thus reducing subsequent maintenance costs; second, enhancing its corrosion resistance, making it suitable for complex environments; third, reducing the friction coefficient and reducing energy loss.

[0061] like Figures 1 to 2 As shown, in some embodiments of the present invention, the outer surface of the sleeve 3 is provided with threads;

[0062] A thread is provided on the outer surface of the sleeve 3. The sleeve 3 can be installed by providing a threaded hole at a suitable position of the diaphragm production line, thereby expanding the installation range of the sleeve 3 and improving the installation convenience of the sleeve 3.

[0063] The utility model provides a wet-process diaphragm waste edge guiding device, comprising a spiral ring guide 1, a support rod 2, and a sleeve 3. The spiral ring guide 1 is used to guide the diaphragm waste edge, and the support rod 2 is rotatably arranged in the sleeve 3. Through the coordinated operation of the spiral ring guide 1, the support rod 2, and the sleeve 3, while ensuring the quality and efficiency of diaphragm waste edge recovery, the adaptability of the guiding device to different working conditions is enhanced, which is conducive to the normal operation of actual production.

[0064] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A wet-process diaphragm waste edge guiding device, characterized in that: It comprises a spiral ring guide (1), a support rod (2) and a sleeve (3), wherein one end of the support rod (2) is connected to the spiral ring guide (1), the other end of the support rod (2) is rotatably arranged in the sleeve (3), and the support rod (2) and the sleeve (3) are coaxially arranged; The spiral ring guide (1) extends in a continuous spiral shape, and forms a spiral structure with at least two ring layers in a natural state, with a spacing between adjacent ring layers.

2. A wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: In the spiral ring guide (1), the radial spacing between adjacent ring layers is 2-6 times the thickness of the ring layers.

3. The wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: In the spiral ring guide (1), the cross-sectional shape of each ring layer is polygonal or circular.

4. A wet-process diaphragm waste edge guiding device according to claim 3, characterized in that: In the spiral ring guide (1), the cross-sectional shape of each ring layer is a polygon, and the number of sides of the polygon is 3-8.

5. The wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: The spiral ring guide (1) is made of alloy material.

6. A wet-process diaphragm waste edge guiding device according to claim 5, characterized in that: The material of the spiral ring guide (1) is shape memory alloy.

7. The wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: The spiral ring guide (1) is in a straight line shape after being stretched.

8. The wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: The spiral ring guide (1) and the support rod (2) are connected by welding or integral molding.

9. The wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: The surface of the spiral ring guide (1) is provided with a wear-resistant coating.

10. The wet-process diaphragm waste edge guiding device according to claim 1, characterized in that: The outer surface of the sleeve (3) is provided with threads.

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