Diaphragm pressing mechanism
By designing a diaphragm compression mechanism including a compression device, a rotating connection assembly, a guide mechanism and a driving device, the problem of wrinkling on the diaphragm head during the diaphragm cutting process is solved, and the high yield and cutting accuracy of the battery cell product are achieved .
Patent Information
- Application Number
- CN202420207451.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The existing diaphragm cutting mechanism can easily cause wrinkles on the diaphragm when cutting the diaphragm, affecting the yield of battery cell products.
A diaphragm pressing mechanism is designed, including a pressing device, a rotary connection assembly, a guide mechanism and a drive device. The compression device realizes elastic compression of multi-point contact through connecting plates, press blocks, press wheels and sheet springs. The rotating connection assembly and guide mechanism ensures the correct position and angle of the press wheel during the cutting and retraction process. The driving device controls the pressure. The wheel extends and retreats.
It effectively avoids wrinkles on the head of the diaphragm, ensures the yield of battery cell products, and ensures the accuracy and consistency of diaphragm cutting.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery manufacturing, in particular to a diaphragm pressing mechanism. Background Art
[0002] Lithium battery winding is to wind the pole piece and the diaphragm together. After the battery cell is wound, the diaphragm needs to be pressed and cut before switching to the next station. The existing diaphragm cutting mechanism uses the driving module to let the pressing wheel press the diaphragm and then the cutter cuts it, and finally returns. The existing diaphragm cutting mechanism uses the driving module to let the pressing wheel press the diaphragm and then the cutter cuts it, and finally returns. The existing pressing wheel is easy to fail to press the diaphragm. During the diaphragm cutting process, the diaphragm incision position will shift, affecting the battery cell preparation process parameters; or the pressing wheel has been pressing the diaphragm tightly. When the pressing wheel returns, the pressing wheel will pull the diaphragm back, causing the diaphragm head to wrinkle, affecting the battery cell quality. Utility Model Content
[0003] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the head of the battery cell diaphragm is easily wrinkled, resulting in defective products and the inability to provide appropriate pressure. A diaphragm clamping mechanism is provided, so that when the diaphragm cutting mechanism cuts the diaphragm, the clamping device uses a pressing wheel to press the diaphragm. When the clamping device retracts, the pressing wheel is away from the diaphragm, thereby eliminating the wrinkling of the diaphragm head and ensuring the yield of the battery cell product.
[0004] In order to solve the above technical problems, the diaphragm pressing mechanism described in the utility model is used to be installed on the diaphragm cutting mechanism, and includes:
[0005] The clamping device comprises a connecting plate, a pressing block, a pressing wheel and a leaf spring; the connecting plate is provided with a plurality of pressing blocks arranged in parallel, and a pressing wheel is provided at the end of each pressing block; the leaf spring is connected to the pressing block, and the two are arranged on the same straight line;
[0006] A rotating connection assembly is mounted on the diaphragm cutting mechanism through a guide mechanism; the rotating connection assembly is connected to the connecting plate, and the connecting plate can rotate around the rotating connection assembly; the connecting plate is also provided with an adjusting block for limiting the rotation angle of the connecting plate;
[0007] A driving device, wherein the driving end of the driving device is connected to the connecting plate of the clamping device through a floating connecting component, and is used to control the pressing wheel on the connecting plate to extend or retract in the horizontal direction.
[0008] In one embodiment of the utility model, the guide mechanism includes two parallel first guide shafts, a second guide shaft, a guide sleeve, and a connecting frame. One end of the first guide shaft and the second guide shaft is connected to the rotating connection assembly, and the other end of the first guide shaft and the second guide shaft is connected to the connecting frame. The first guide shaft and the second guide shaft are both covered with guide sleeves.
[0009] In an embodiment of the present invention, the adjusting block is connected to the connecting plate via an elastic member.
[0010] In one embodiment of the utility model, the rotating connection assembly includes a fixed plate, a connecting member and a rotating shaft; the connecting member is fixedly arranged at both ends of the connecting plate, and the two ends of the fixed plate are connected to the connecting member through the rotating shaft.
[0011] In one embodiment of the utility model, the rotating connection assembly includes a fixed plate, a connecting member and a rotating shaft; the connecting member is fixedly arranged at both ends of the connecting plate, and the two ends of the fixed plate are connected to the connecting member through the rotating shaft.
[0012] In one embodiment of the utility model, a limiting groove adapted to the adjusting stopper is provided in the middle of the fixing plate.
[0013] In one embodiment of the present invention, an axial hole is provided at the end of the pressing block, a supporting shaft is provided in the axial hole, and the pressing wheels are arranged at both ends of the supporting shaft.
[0014] In one embodiment of the utility model, the floating connection assembly includes a floating head and a floating block, the floating block has a slot therein, a floating matching head is provided at the end of the floating head, the floating matching head is floated in the slot and the floating head swings within a limited range of the slot with the floating matching head as a fulcrum.
[0015] In one embodiment of the utility model, a limit ring is further provided on the floating matching head.
[0016] In one embodiment of the present invention, the driving device is a cylinder.
[0017] The above technical solution of the utility model has at least the following advantages compared with the prior art:
[0018] The diaphragm clamping mechanism described in the utility model, when the connecting plate of the clamping device is extended under the control of the driving device, the connecting plate can rotate downward around the rotating connecting assembly, so that the pressing wheel can press the diaphragm, and each pressing wheel contacts the diaphragm independently, realizing multi-point contact and elastic pressing, which can ensure that each section of the diaphragm can be pressed and that the incision will not be offset when the diaphragm is cut; when the connecting plate is retracted under the control of the driving device, the connecting plate rotates upward around the rotating connecting assembly, and the pressing wheel is away from the diaphragm and does not contact the diaphragm, eliminating the phenomenon of wrinkling of the diaphragm head during the process of retracting the pressing wheel when the diaphragm is cut, thereby ensuring the yield of the battery cell products. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein
[0020] Figure 1 It is a structural schematic diagram of the diaphragm pressing mechanism in the preferred embodiment of the utility model;
[0021] Figure 2 yes Figure 1 A schematic structural diagram of the diaphragm pressing mechanism from another angle shown;
[0022] Figure 3 yes Figure 1 A schematic cross-sectional structure diagram of the diaphragm pressing mechanism shown;
[0023] Figure 4 yes Figure 1 A schematic structural diagram of a pressing block, a pressing wheel and an elastic member of the diaphragm pressing mechanism shown;
[0024] Figure 5 yes Figure 1 A schematic structural diagram of a fixed plate of a rotating connection assembly of a diaphragm pressing mechanism shown;
[0025] Figure 6 yes Figure 1 A schematic structural diagram of a floating connection assembly of a diaphragm clamping mechanism shown;
[0026] Explanation of the reference numerals in the specification: 1. Clamping device; 11. Connecting plate; 111. Embedding groove; 12. Pressing block; 13. Pressing wheel; 14. Leaf spring; 2. Rotating connecting assembly; 3. Guide mechanism; 31. First guide shaft; 32. Second guide shaft; 33. Guide sleeve; 34. Connecting frame; 4. Driving device; 5. Adjusting block; 121. Support shaft; 21. Fixed plate; 211. Limiting groove; 22. Connecting piece; 23. Rotating shaft; 6. Floating connecting assembly; 61. Floating head; 611. Floating matching head; 612. Limiting retaining ring; 62. Floating block; 621. Slot. DETAILED DESCRIPTION
[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.
[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings in the specification and specific trial methods.
[0029] Reference Figure 1-3 As shown, the diaphragm clamping mechanism of the utility model is used to be installed on the diaphragm cutting mechanism, comprising: a clamping device 1, including a connecting plate 11, a pressure block 12, a pressure wheel 13 and a leaf spring 14; the connecting plate 11 is provided with a plurality of parallel pressure blocks 12, and each pressure block 12 is provided with a pressure wheel 13 at its end; the leaf spring 14 is connected to the pressure block 12, and the two are arranged on the same straight line; a rotating connection component 2 is installed on the diaphragm cutting mechanism through a guide mechanism 3; the rotating connection component 2 is connected to the connecting plate 11, and the connecting plate 11 can rotate around the rotating connection component 2; the connecting plate 11 is also provided with an adjustment block 5 for limiting the rotation angle of the connecting plate 11; the adjustment block 5 is connected to the connecting plate 11 through an elastic member 7. A driving device 4, the driving end of which is connected to the connecting plate 11 on the clamping device 1 through a floating connection component 6, and is used to control the pressure wheel 13 on the connecting plate 11 to extend or retract in the horizontal direction. In this embodiment, the driving device 4 is a cylinder.
[0030] The guide mechanism 3 includes two parallel first guide shafts 31, a second guide shaft 32, a guide sleeve 33 and a connecting frame 34. One end of the first guide shaft 31 and the second guide shaft 32 are connected to the rotating connection assembly 2, and the other end of the first guide shaft 31 and the second guide shaft 32 are connected to the connecting frame 34. The first guide shaft 31 and the second guide shaft 32 are both sleeved with a guide sleeve 33. The guide sleeve 33 is fixed on the diaphragm cutting mechanism, and the first guide shaft 31 and the second guide shaft 32 can reciprocate in the guide sleeve 33. When the driving device 4 controls the connecting plate 11 to extend or retract, smooth movement can occur.
[0031] In addition, the connecting plate 11 is provided with a plurality of embedding grooves 111 arranged in parallel, the leaf springs 14 are arranged in the embedding grooves 111 , and the pressing blocks 12 are arranged in the embedding grooves 111 and connected to the leaf springs 14 .
[0032] Preferably, the embedding groove 111 is adapted to the shape of the leaf spring 14. Since each pressing wheel 13 is connected to a leaf spring 14 and then installed in the connecting plate 11, each pressing wheel 13 is no longer rigidly connected to the connecting plate 11, so that each pressing wheel 13 has a certain amount of mobility, thereby ensuring that each pressing wheel 13 can provide appropriate pressure to press the diaphragm to avoid damaging the diaphragm or failing to press the diaphragm; in this embodiment, each pressing wheel 13 is made of flexible material to avoid damaging the diaphragm.
[0033] Preferably, an axial hole is provided at the end of the pressing block 12 , a supporting shaft 121 is provided in the axial hole, and the pressing wheels 13 are arranged at both ends of the supporting shaft 121 .
[0034] Preferably, the rotating connection assembly 2 includes a fixed plate 21, a connecting member 22 and a rotating shaft 23; the connecting member 22 is fixedly arranged at both ends of the connecting plate 11, and the two ends of the fixed plate 21 are connected to the connecting member 22 through the rotating shaft 23. When the connecting plate 11 is extended under the control of the driving device 4, the connecting plate 11 can rotate upward around the rotating shaft 23, so that the pressure wheel 13 can press the diaphragm and extend forward; when the connecting plate 11 is retracted under the control of the driving device 4, when retracting, the connecting plate 11 rotates downward around the rotating shaft 23, so that when retracting, the pressure wheel 13 first moves downward and then retracts, and does not contact the diaphragm, thereby eliminating the wrinkling of the diaphragm head; the adjusting block 5 is used to limit the angle of the connecting plate 11, so that the rotation angle of the connecting plate 11 is maintained within a certain range. The above-mentioned downward rotation and upward rotation are based on Figure 1 The description will be made with the surface facing each other being referred to as the upper surface and the surface opposite to it being referred to as the lower surface.
[0035] like Figure 5 As shown, a limiting groove 211 adapted to the adjusting stopper 5 is provided in the middle of the fixing plate 21 .
[0036] like Figure 6 As shown, the floating connection assembly 6 includes a floating head 61 and a floating block 62. A slot 621 is provided in the floating block 62. A floating matching head 611 is provided at the end of the floating head 61. The floating matching head 611 is floated in the slot 621 and the floating head 61 is deflected within the limited range of the slot 621 with the floating matching head 611 as a fulcrum. A limit ring 612 is also provided on the floating matching head 611. Due to the gap between the floating head 61 and the floating block 62, when the pressure wheel 13 is pushed forward or withdrawn, the connecting plate 11 will rotate around the rotating shaft 23; the limit ring 612 plays a buffering role to prevent the floating matching head 611 from colliding and wearing with the slot 621.
[0037] The specific working process of the diaphragm pressing mechanism based on the above structure is as follows:
[0038] Through the control of the driving device 4, the pressure wheel 13 extends to press the diaphragm, and then the cutter cuts the diaphragm and finally retracts. In this process, when the pressure wheel 13 extends inward to press the diaphragm, when the pressure wheel 13 extends forward, the connecting plate 11 rotates upward around the rotating shaft 23, so that the diaphragm can be pressed inward. When retracting, the connecting plate 11 retracts while rotating downward around the rotating shaft 23. The adjustment block 5 and the elastic member 7 can adjust the size of the rotation angle of the extension and retraction of the connecting plate 11. When retracting, the pressure wheel 13 first moves downward to avoid the diaphragm, and can retract without contacting the diaphragm, thereby eliminating the wrinkling of the diaphragm head.
[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.
Claims
1. A diaphragm pressing mechanism, used to be installed on a diaphragm cutting mechanism, characterized in that: include: The clamping device comprises a connecting plate, a pressing block, a pressing wheel and a leaf spring; the connecting plate is provided with a plurality of pressing blocks arranged in parallel, and a pressing wheel is provided at the end of each pressing block; the leaf spring is connected to the pressing block, and the two are arranged on the same straight line; A rotating connection assembly is mounted on the diaphragm cutting mechanism through a guide mechanism; the rotating connection assembly is connected to the connecting plate, and the connecting plate is also provided with an adjusting block for limiting the rotation angle of the connecting plate; The driving device has a driving end connected to the connecting plate of the clamping device through a floating connecting assembly, and is used to control the pressing wheel on the connecting plate to extend or retract in the horizontal direction.
2. The diaphragm pressing mechanism according to claim 1, characterized in that: The guide mechanism includes two parallel first guide shafts, a second guide shaft, a guide sleeve, and a connecting frame. One end of the first guide shaft and the second guide shaft is connected to the rotating connection component, and the other end of the first guide shaft and the second guide shaft is connected to the connecting frame. The first guide shaft and the second guide shaft are both covered with guide sleeves.
3. The diaphragm pressing mechanism according to claim 1, characterized in that: The connecting plate is provided with a plurality of embedding grooves arranged in parallel, and the leaf spring and the pressing block are arranged in the embedding grooves.
4. The diaphragm pressing mechanism according to claim 3, characterized in that: The adjusting stopper is connected to the connecting plate via an elastic member.
5. The diaphragm pressing mechanism according to claim 1, characterized in that: The rotating connection assembly includes a fixed plate, a connecting member and a rotating shaft; the connecting member is fixedly arranged at both ends of the connecting plate, and the two ends of the fixed plate are connected to the connecting member through the rotating shaft.
6. The diaphragm pressing mechanism according to claim 5, characterized in that: A limiting groove adapted to the adjusting stopper is provided in the middle of the fixing plate.
7. The diaphragm pressing mechanism according to claim 1, characterized in that: An axial hole is arranged at the end of the pressing block, a supporting shaft is arranged in the axial hole, and the pressing wheels are arranged at both ends of the supporting shaft.
8. The diaphragm pressing mechanism according to claim 1, characterized in that: The floating connection assembly includes a floating head and a floating block. A slot is arranged in the floating block. A floating matching head is arranged at the end of the floating head. The floating matching head is floated in the slot and the floating head swings within a limited range of the slot with the floating matching head as a fulcrum.
9. The diaphragm pressing mechanism according to claim 8, characterized in that: The floating matching head is also provided with a limit ring.
10. The diaphragm pressing mechanism according to claim 1, characterized in that: The driving device is a cylinder.