Novel pole piece cutter structure
The integrated structure of tilting cutting head and grinding solves the problems of burrs and material loss during electrode cutting, achieving high-quality electrode cutting, reducing the risk of battery self-discharge and short circuit, and improving cutting efficiency.
Patent Information
- Application Number
- CN202423289008.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The cutting of existing lithium-ion battery electrodes results in burrs and material loss on the cut surface, which increases the battery's self-discharge rate and the risk of internal short circuits, thus affecting the quality of electrode cutting.
It adopts an inclined cutting head structure, combined with a cylinder assembly and a guide slide, and uses a dovetail groove and a transmission gear set to achieve integrated cutting and polishing. After cutting, the cut is polished by the polishing part. The cylinder assembly can drive the cutting head slide to move after cutting to adapt to the cutting of longer electrode sheets.
It effectively reduces burrs and material loss on the cutting surface, improves the quality of electrode cutting, reduces the battery self-discharge rate and short circuit risk, and improves cutting efficiency.
Smart Images
Figure CN223718843U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the pole piece processing technical field especially relates to a novel pole piece cutter structure. BACKGROUND
[0002] In the field of lithium ion battery design and manufacture, the positive and negative pole pieces are the key components of power batteries, in the prior art, the pole piece cutting mostly adopts the cutting-off mode of vertical cutter, due to the certain toughness of the pole piece, when cutting off vertically, there will be cutting surface burr, dropping material and other phenomena, the dust generated by cutting enters the battery interior, causing the increase of the battery self-discharge rate, increasing the battery heat production, even causing the internal short circuit of the battery, greatly affecting the quality of pole piece cutting-off. SUMMARY
[0003] In order to solve the problems mentioned in the background art, the utility model provides a novel pole piece cutter structure.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A novel pole piece cutter structure, including cylinder assembly, cutter head sliding seat, cutting cutter head and cutter base, the battery pole piece to be cut is conveyed from the production line to the gap between the cutter head sliding seat and the cutter base, so as to be continuously cut by the cylinder assembly installed with the cutting cutter head, the cutter head sliding seat is provided with a cutter head sliding rail on one side of the inclined surface, a guide sliding head is installed in the cutter head sliding rail, the guide sliding head has a dovetail groove on the side facing the outside of the cutter head sliding rail, the cutting cutter head includes a connecting seat, a polishing part and a cutting part connected in turn from top to bottom, the connecting seat is connected with the dovetail groove on one side, and the upper end of the connecting seat is connected with the hydraulic rod of the cylinder assembly;
[0006] The cutter base can be used as a cutting-off support structure of the pole piece, and the cutter base has a material receiving groove.
[0007] Preferably, the inner side wall of the cutter head sliding rail has a single-sided toothed rail extending horizontally, a transmission gear set is installed on the upper part of the guide sliding head, the transmission gear set includes a transmission shaft installed on the upper part of the guide sliding head, and a first gear and a second gear installed on both ends of the transmission shaft, the transmission shaft can rotate axially, and the upper side or the lower side of the single-sided toothed rail has teeth meshing with the first gear.
[0008] Preferably, the upper part of the dovetail groove is provided with a matching seat, the matching seat has a space accommodating the second gear, the inside of the connecting seat has a limiting clamping groove, and the limiting clamping groove further has a contraction groove communicating with the limiting clamping groove and the upper space, and the hydraulic rod can penetrate through the contraction groove.
[0009] Preferably, the lower end of the hydraulic rod is provided with an adjusting head, the diameter of the adjusting head is larger than the minimum diameter of the contraction groove, so that the connecting seat cannot be separated from the hydraulic rod, the adjusting head can rotate axially at the bottom of the hydraulic rod, and an outer peripheral wall of the adjusting head is provided with a permanent magnet block.
[0010] Preferably, the left and right sides of the second gear are respectively provided with an L-shaped transmission piece, the vertical section of the L-shaped transmission piece penetrates out of the connecting seat upward, the bottom end of the matching seat is provided with a channel for the L-shaped transmission piece to penetrate upward, and the vertical section of the L-shaped transmission piece is provided with a gear row capable of meshing with the second gear.
[0011] Preferably, the channel, through which the vertical section of the L-shaped transmission piece penetrates out of the connecting seat, is provided with an elastic retaining piece, the elastic retaining piece keeps the L-shaped transmission piece in a fixed vertical position, and keeps the L-shaped transmission piece in a horizontal position incapable of meshing with the second gear under normal circumstances, and the horizontal section of the L-shaped transmission piece extends to the outside of the adjusting head and can be magnetically attracted.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] 1. The cutting knife head of the utility model tilts and advances to cut the battery pole piece, and the cutting surface can be further polished after cutting, the pole piece cutting quality is improved, and the burrs and material dropping caused by pole piece cutting are reduced.
[0014] 2. The cylinder assembly of the utility model can make the knife head sliding seat and the cutting knife head move in the left-right direction once through the lifting of the cutting knife head after the completion of one cutting of the cutting knife head, so that the cutting knife head can cut longer battery pole pieces. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.
[0016] Figure 1 It is a whole schematic view of the novel pole piece cutting knife structure.
[0017] Figure 2 It is an internal structure sectional view of the knife head sliding seat and the cutting knife head.
[0018] In the figure: 1, cylinder assembly; 11, hydraulic rod; 12, adjusting head; 13, permanent magnet block; 2, cutter head sliding seat; 21, guide sliding head; 22, transmission gear set; 221, transmission shaft; 222, first gear; 223, second gear; 201, cutter head sliding rail; 202, dovetail groove; 203, unilateral toothed rail; 23, matching seat; 3, cutting cutter head; 301, limiting clamping groove; 302, contraction groove; 31, connecting seat; 32, polishing part; 33, cutting part; 34, L-shaped transmission piece; 35, elastic retaining member; 4, cutter base; 401, material receiving groove. DETAILED DESCRIPTION
[0019] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] Embodiment 1
[0021] Referring to Figure 1 and 2 A novel pole piece cutter structure, comprising a cylinder assembly 1, a cutter head sliding seat 2, a cutting cutter head 3 and a cutter base 4, the battery pole piece to be cut is conveyed from the production line to the gap between the cutter head sliding seat 2 and the cutter base 4, so that the cylinder assembly 1 provided with the cutting cutter head 3 continuously cuts.
[0022] The cutter head sliding seat 2 has an inclined surface, one side of the cutter head sliding seat 2 provided with the inclined surface is provided with a cutter head sliding rail 201, the cutter head sliding rail 201 is provided with a guide sliding head 21, the guide sliding head 21 is provided with a dovetail groove 202 on the side facing the outside of the cutter head sliding rail 201, the cutting cutter head 3 comprises a connecting seat 31, a polishing part 32 and a cutting part 33 connected in sequence from top to bottom, one side of the connecting seat 31 is connected with the dovetail groove 202, and the upper end of the connecting seat 31 is connected with the hydraulic rod 11 of the cylinder assembly 1, so that when the hydraulic cylinder drives the hydraulic rod 11 to reciprocatingly stretch and retract, the cutting cutter head 3 can be driven to move up and down along the dovetail groove 202 to perform cutting work.
[0023] When the cutting head 3 descends to cut the electrode sheet, the cutting part 33 first contacts the electrode sheet and cuts and separates the electrode sheet. Since the guide slide head 21 installed on the cutting head slide rail 201 has a certain tilt angle, the cutting part 33 does not cut vertically during cutting, thus effectively avoiding the phenomenon of burrs and material loss on the cut surface when cutting vertically. Furthermore, after the cutting part 33 completes the cutting, both the front and rear surfaces of the grinding part 32 have rough grinding surfaces. As the grinding part 32 continues to move downward, the cut surface that has just been cut by the cutting part 33 can be ground and polished, thereby making the cut surface smoother.
[0024] It is understandable that when the cutting part 33 moves downward, it will continue to move forward along with the connecting seat 31 that moves downward along the dovetail groove 202, thereby tending to continuously press against the front surface of the cutting edge and successfully completing the grinding of the front cut surface. As the electrode roll material is continuously conveyed forward from the production line, the rear surface of the cutting edge will also always move forward and press against the grinding surface on the rear side of the cutting part 33. When the cutting part 33 moves upward, it will continue to move backward along with the connecting seat 31 that moves upward along the dovetail groove 202, thereby tending to continuously press against the rear surface of the cutting edge and successfully completing the grinding of the rear cut surface.
[0025] The cutter base 4 can serve as a cutting support structure for the electrode sheet. The cutter base 4 has a receiving groove 401 for receiving the cut electrode sheet.
[0026] Example 2
[0027] Reference Figure 1 and 2 The difference between this embodiment and Embodiment 1 is that the inner wall of the cutter slide rail 201 has a transversely extending single-sided toothed rail 203, and a transmission gear set 22 is installed on the upper part of the guide slide head 21. The transmission gear set 22 includes a transmission shaft 221 installed on the upper part of the guide slide head 21, and a first gear 222 and a second gear 223 installed at both ends of the transmission shaft 221. The transmission shaft 221 can rotate axially. When the second gear 223 is driven to rotate, the first gear 222 can be driven to rotate axially in conjunction. The upper or lower side of the single-sided toothed rail 203 has teeth that mesh with the first gear 222. When the first gear 222 rotates, it can cooperate with the teeth of the single-sided toothed rail 203 to drive the guide slide head 21 to move left and right.
[0028] The upper part of the dovetail groove 202 is provided with a matching seat 23, the matching seat 23 has a space for accommodating the second gear 223, the connecting seat 31 is internally provided with a limiting clamping groove 301, the limiting clamping groove 301 is further provided with a contraction groove 302 which is in communication with the limiting clamping groove 301 and the upper space, the hydraulic rod 11 can penetrate the contraction groove 302, the connecting seat 31 can move forward and backward under the limitation of the contraction groove 302 during the up and down movement of the hydraulic rod 11, the lower end of the hydraulic rod 11 is provided with an adjusting head 12, the diameter of the adjusting head 12 is greater than the minimum diameter of the contraction groove 302, so that the connecting seat 31 cannot be separated from the hydraulic rod 11, the adjusting head 12 can be axially rotated at the bottom of the hydraulic rod 11, and an permanent magnet block 13 is installed on the outer peripheral wall of the adjusting head 12.
[0029] The left and right sides of the second gear 223 are each provided with an L-shaped transmission piece 34, the vertical section of the L-shaped transmission piece 34 penetrates out of the connecting seat 31 upwards, the bottom end of the matching seat 23 is provided with a channel for the L-shaped transmission piece 34 to penetrate upwards, and the vertical section of the L-shaped transmission piece 34 has a tooth row which can be engaged with the second gear 223, after the vertical section of the L-shaped transmission piece 34 penetrates into the matching seat 23 and is engaged with the second gear 223, the up and down movement of the L-shaped transmission piece 34 can drive the second gear 223 to rotate axially, and then drive the entire cutter head sliding seat 2 to move left and right.
[0030] The channel allowing the vertical section of the L-shaped transmission piece 34 to penetrate out of the connecting seat 31 is provided with an elastic retaining piece 35, the elastic retaining piece 35 keeps the L-shaped transmission piece 34 in a fixed vertical position, and normally keeps the L-shaped transmission piece 34 in a horizontal position which cannot be engaged with the second gear 223, the horizontal section of the L-shaped transmission piece 34 extends to the outside of the adjusting head 12 and can be magnetically attracted, when the adjusting head 12 rotates and the permanent magnet block 13 approaches the horizontal section of the L-shaped transmission piece 34 on one side, the horizontal section of the L-shaped transmission piece 34 will be attracted to approach the adjusting head 12, and at the same time the vertical section of the L-shaped transmission piece 34 will also be able to engage with the second gear 223, the air cylinder assembly 1 can make the cutter head sliding seat 2 link the cutter head 3 to move in the left and right directions once after completing a cutting by pressing down the cutter head 3, so that the cutter head 3 can cut longer battery pole pieces.
[0031] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0032] In the utility model, unless another explicit provision and limitation, the terms "arrange", "install", "connect", "connect", "fix" and the like should be understood broadly, for example, can be fixed connection, can be detachable connection, or be integrated, can be mechanical connection, can be direct connection, can be indirect connection through intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0033] The control mode of the utility model is automatically controlled through the controller, and the control circuit of the controller can be realized through simple programming of the skilled in the art, and the provision of power also belongs to the common knowledge in the art, and the utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the utility model will not be explained in detail.
[0034] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and any skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. A novel electrode tab cutter structure, comprising a cylinder assembly (1), a cutter head sliding seat (2), a cutting cutter head (3) and a cutter base (4), the battery electrode tab to be cut is conveyed from the production line into the gap between the cutter head sliding seat (2) and the cutter base (4), so as to be continuously cut by the cylinder assembly (1) provided with the cutting cutter head (3), characterized in that: the cutter head sliding seat (2) has an inclined side provided with a cutter head sliding rail (201), a guide sliding head (21) is installed in the cutter head sliding rail (201), the guide sliding head (21) has a dovetail groove (202) on the side facing the outside of the cutter head sliding rail (201), the cutting cutter head (3) comprises a connecting seat (31), a polishing part (32) and a cutting part (33) connected in sequence from top to bottom, one side of the connecting seat (31) is connected with the dovetail groove (202), and the upper end of the connecting seat (31) is connected with a hydraulic rod (11) of the cylinder assembly (1); the cutter base (4) can serve as a cutting support structure of the electrode tab, and the cutter base (4) has a material receiving groove (401). The inner side wall of the cutter head sliding rail (201) has a one-sided toothed rail (203) extending horizontally, the guide sliding head (21) is provided with a transmission gear set (22) on the upper part, the transmission gear set (22) comprises a transmission shaft (221) installed on the upper part of the guide sliding head (21), and a first gear (222) and a second gear (223) installed on both ends of the transmission shaft (221), the transmission shaft (221) can rotate axially, and the upper side or the lower side of the one-sided toothed rail (203) has teeth meshing with the first gear (222). The upper part of the dovetail groove (202) is provided with a matching seat (23), the matching seat (23) has a space accommodating the second gear (223), the inside of the connecting seat (31) has a limiting clamping groove (301), the limiting clamping groove (301) is further provided with a contraction groove (302) communicating with the limiting clamping groove (301) and the upper space, and the hydraulic rod (11) can penetrate through the contraction groove (302).
2. A novel pole piece cutter structure according to claim 1, characterized in that: The lower end of the hydraulic rod (11) is provided with an adjusting head (12), the diameter of the adjusting head (12) is greater than the minimum position of the diameter of the contraction groove (302), so that the connecting seat (31) cannot be separated from the hydraulic rod (11), the adjusting head (12) can rotate axially at the bottom of the hydraulic rod (11), and an permanent magnet block (13) is installed on the outer peripheral wall of the adjusting head (12).
3. A novel pole piece cutter structure according to claim 2, characterized in that: The left and right sides of the second gear (223) are respectively provided with an L-shaped transmission sheet (34), the vertical section of the L-shaped transmission sheet (34) penetrates out of the connecting seat (31) upward, the bottom end of the matching seat (23) is provided with a channel allowing the L-shaped transmission sheet (34) to penetrate upward, and the vertical section of the L-shaped transmission sheet (34) has a tooth row capable of meshing with the second gear (223).
4. A novel pole piece cutter structure according to claim 3, characterized in that: 5. A novel pole piece cutter structure according to claim 4, characterized in that: 6. A novel pole piece cutter structure according to claim 5, characterized in that: The connecting seat (31) allows the vertical section of the L-shaped transmission piece (34) to pass through a channel provided with an elastic retaining member (35), which retains the L-shaped transmission piece (34) in a fixed vertical position and, under normal circumstances, retains the L-shaped transmission piece (34) in a horizontal position in which it cannot engage with the second gear (223), the horizontal section of the L-shaped transmission piece (34) extending outside the adjustment head (12) and being capable of being magnetically attracted.