A pole piece stacking device

Abstract

The present invention proposes a pole piece stacking device, including a placement table for placing pole pieces and at least one pressing mechanism, the pressing mechanism including a driving member, two pressing plates and two moving components, the two moving components are respectively arranged on both sides of the placement table; the moving components include a horizontal moving member, a lifting member and a reset member, the horizontal moving member is provided with a first guide slope; the lifting member is provided with a second guide slope that matches the first guide slope, the first guide slope is connected to the second guide slope, one end of the lifting member is provided with a pressing plate, and the end of the lifting member away from the pressing plate is connected with a reset member; the driving member connects the two horizontal moving members, when the driving member drives the horizontal moving member to reciprocate in the horizontal direction, the reciprocating movement of the horizontal moving member drives the pressing plate on the lifting member to approach or move away from the placement table. The pole piece stacking device of the present invention solves the problem of pole piece damage in the existing pole piece stacking process.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and in particular to a pole piece stacking device. Background Art

[0002] The demand for lithium batteries is increasing, and the quality requirements for lithium batteries are getting higher and higher. The stacking quality of the pole pieces is directly related to the battery yield rate, so the stacking process plays a vital role in the preparation and production of batteries. The pressing device of the lithium battery stacking machine is mainly used to press the stacked pole pieces to facilitate the stacking of the next pole piece.

[0003] At present, some lithium-ion battery stacking relies on manual operation to stack the positive and negative electrodes alternately in a fixture according to the established requirements, which is labor-intensive and greatly affected by human factors. The existing pressing device mainly includes two cylinders to realize the movement in the X and Z directions, that is, one cylinder is responsible for lifting and lowering to make the pressing plate press and loosen the electrode and diaphragm, and the other cylinder realizes the left and right movement of the pressing plate. The Z-direction cylinder drives the pressing plate to rise, and then the X-direction cylinder drives the pressing plate to separate to the two sides of the electrode and diaphragm for stacking. After the stacking is completed, the X-direction cylinder drives the pressing plate to move toward the electrode and diaphragm, and the Z-direction cylinder drives the pressing plate to descend and press on the electrode and diaphragm. Among them, the impact force of the Z-direction cylinder is large when it retracts, which is easy to deform or damage the electrode, and occupies a large space. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to provide a pole piece stacking device in view of the problem of pole piece damage during the existing pole piece stacking process.

[0005] The present invention provides a pole piece stacking device, comprising a placement table for placing pole pieces and at least one pressing mechanism, wherein the pressing mechanism comprises a driving member, two pressing plates and two moving assemblies, and the two moving assemblies are respectively arranged on both sides of the placement table;

[0006] The moving assembly includes a horizontal moving member, a lifting member and a reset member, the horizontal moving member is provided with a first guiding inclined surface; the lifting member is provided with a second guiding inclined surface matched with the first guiding inclined surface, the first guiding inclined surface is connected to the second guiding inclined surface, one end of the lifting member is provided with a pressing plate, and the end of the lifting member away from the pressing plate is connected with the reset member;

[0007] The driving member is connected to the two horizontal moving members. When the driving member drives the horizontal moving members to reciprocate in the horizontal direction, the reciprocating movement of the horizontal moving members drives the pressing plate on the lifting member to approach or move away from the placing platform.

[0008] Optionally, the horizontal moving member includes a slide and a guide block, the slide is connected to the driving member; the guide block is mounted on the slide, and the first guide slope is arranged on an end of the guide block away from the slide;

[0009] The lifting member comprises a guide groove, the second guide slope is arranged in the guide groove, and when the slide seat reciprocates in the horizontal direction, the first guide slope overlaps with or moves away from the second guide slope.

[0010] Optionally, the pressing mechanism further includes a base plate and a limiting assembly, the driving member is mounted on the base plate, and the slide seat is arranged on both sides of the base plate; the limiting assembly includes a first limiting member and a positioning member, the first limiting member includes a mounting seat, a limiting stud and a limiting circular groove, the mounting seat is mounted on the base plate, a through hole is arranged on the mounting seat, the limiting stud is accommodated in the through hole, and one end of the limiting stud extends out of the through hole; the limiting circular groove is arranged on the guide block; the positioning member includes a fixing seat, a positioning column and a positioning groove, the fixing seat is mounted on the base plate and arranged on one side of the mounting seat; the positioning column is mounted on the fixing seat; the positioning groove is arranged on the mounting seat, and the positioning column is engaged with the positioning groove;

[0011] When the first guide slope overlaps with the second guide slope, the limiting stud falls into the limiting circular groove, and the pressure plate presses the pole piece; when the first guide slope moves away from the second guide slope, the limiting stud disengages from the limiting circular groove, and the pressure plate moves upward away from the pole piece.

[0012] Optionally, a accommodating cavity and an avoidance groove are provided on the mounting seat, the accommodating cavity and the avoidance groove are communicated, and the lifting member is installed in the accommodating cavity; one end of the guide block close to the first guide slope is located in the avoidance groove, and the through hole is provided at the upper end of the avoidance groove and is communicated with the avoidance groove.

[0013] Optionally, a guide bar is provided on the side of the guide block, and the guide bar is provided along the extension direction of the guide block; a sliding groove is provided on the side of the avoidance groove, and the guide bar is slidably connected to the sliding groove, so that the driving member drives the guide block to reciprocate along the avoidance groove.

[0014] Optionally, the limiting assembly further includes a second limiting member, which includes a limiting groove and a limiting rod, wherein the limiting grooves are arranged on both sides of the mounting seat and extend in the vertical direction; one end of the limiting rod passes through the limiting groove and is connected to the lifting member.

[0015] Optionally, the moving assembly further comprises a moving guide, the moving guide comprises a guide rail and a slider, the guide rail is mounted on the substrate; the mounting seat is mounted on the guide rail via the slider.

[0016] Optionally, the pole piece stacking device further comprises a first guide assembly and a second guide assembly, the first guide assembly comprises a first guide column and a first guide sleeve, the first guide sleeve is mounted on the base plate, the first guide column extends vertically, and one end of the first guide column is connected to the placement table, and the other end of the first guide column is slidably inserted into the first guide sleeve;

[0017] The second guide assembly includes a second guide column and a second guide sleeve. The second guide sleeve is installed on a side of the placement table away from the pole piece. The second guide column extends vertically, and one end of the second guide column is connected to the substrate, and the other end of the second guide column is slidably inserted into the second guide sleeve.

[0018] Optionally, the second guide assembly further includes a buffer spring, and the buffer spring is sleeved on the outer circumference of the second guide column.

[0019] Optionally, the pressing mechanism also includes a mounting member, which includes a first mounting plate and a second mounting plate, the pressing plate is mounted on the first mounting plate, the first mounting plate is movably and adjustably mounted on the second mounting plate along the extension direction of the first mounting plate; the second mounting plate is movably and adjustably mounted on the lifting member along the extension direction of the second mounting plate.

[0020] In the present invention, the lifting and lowering of the lifting member is realized by driving the horizontal moving member to move back and forth in the horizontal direction through the driving member. When the horizontal moving member approaches the placement table, the lifting member drives the pressure plate to approach the pole piece on the placement table through the connection between the second guide slope and the first guide slope, and presses the pole piece. When the horizontal moving member moves away from the placement table, the lifting member is moved up and away from the pole piece on the placement table through the resetting member, thereby reducing the impact force on the pole piece when the pressure plate is reset. The two horizontal moving members are driven simultaneously by the driving member to press the pole piece on the placement table, and the structure is compact and occupies little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of a pole piece stacking device provided by an embodiment of the present invention;

[0022] Figure 2 is an exploded view of a pole piece stacking device provided by one embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of a pole piece stacking device provided by an embodiment of the present invention from another angle;

[0024] Figure 4 yes Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0027] like Figure 1-Figure 4 As shown, a pole piece stacking device according to an embodiment of the present invention comprises a placement table 1 for placing pole pieces and at least one pressing mechanism, wherein the pressing mechanism comprises a driving member 2, two pressing plates 3 and two moving assemblies, and the two moving assemblies are respectively arranged on both sides of the placement table 1. Specifically, the driving member 2 is a cylinder.

[0028] The moving assembly includes a horizontal moving member 41, a lifting member 42 and a reset member 43. The horizontal moving member 41 is provided with a first guide slope 4111. The lifting member 42 is provided with a second guide slope 4211 that matches the first guide slope 4111. The first guide slope 4111 is connected to the second guide slope 4211. One end of the lifting member 42 is provided with a pressing plate 3. The end of the lifting member 42 away from the pressing plate 3 is connected to the reset member 43. Specifically, the reset member 43 is a spring or elastic rubber.

[0029] The driving member 2 is connected to the two horizontal moving members 41 . When the driving member 2 drives the horizontal moving members 41 to reciprocate in the horizontal direction, the reciprocating movement of the horizontal moving members 41 drives the pressing plate 3 on the lifting member 42 to approach or move away from the placing table 1 .

[0030] When the electrode stacking device of the embodiment of the present invention is working, the electrode is placed on the placement table 1, the driving member 2 drives the horizontal moving member 41 to move in the direction close to the placement table 1, and the lifting member 42 drives the pressing plate 3 to descend to press the electrode. The driving member 2 drives the horizontal moving member 41 to move in the direction away from the placement table 1, and the lifting member 42 rises under the action of the reset member 43, and the pressing plate 3 leaves the electrode. Repeat the above operation to stack the electrode.

[0031] In this embodiment, the horizontal moving member 41 is driven to reciprocate in the horizontal direction by the driving member 2 to realize the lifting and lowering of the lifting member 42. When the horizontal moving member 41 approaches the placement table 1, the lifting member 42 is connected with the first guiding inclined surface 4111 through the second guiding inclined surface 4211, so as to drive the pressing plate 3 to approach the pole piece on the placement table 1 and press the pole piece. When the horizontal moving member 41 moves away from the placement table 1, the lifting member 42 is raised and away from the pole piece on the placement table 1 by the resetting member 43, so as to reduce the impact force on the pole piece when the pressing plate 3 is reset. The two horizontal moving members 41 are driven simultaneously by the driving member 2 to press the pole piece on the placement table 1, and the structure is compact and the space occupied is small.

[0032] Furthermore, there are two pressing mechanisms, which are respectively arranged at two ends of the placement table 1 to press the periphery of the pole piece.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the horizontal moving member 41 includes a slide 411 and a guide block 412, and the slide 411 is connected to the driving member 2. The guide block 412 is mounted on the slide 411, and the first guide slope 4111 is arranged on the guide block 412 at one end away from the slide 411.

[0034] The lifting member 42 includes a guide groove 421, and the second guide slope 4211 is arranged in the guide groove 421. When the slide seat 411 moves back and forth in the horizontal direction, the first guide slope 4111 overlaps or moves away from the second guide slope 4211. Through the cooperation between the first guide slope 4111 and the second guide slope 4211, the horizontal moving member 41 drives the lifting member 42 to rise and fall.

[0035] like Figure 2 As shown, in some embodiments of the present invention, the pressing mechanism further includes a substrate 5 and a limiting assembly, the driving member 2 is mounted on the substrate 5, and the slide 411 is arranged on both sides of the substrate 5. The limiting assembly includes a first limiting member 61 and a positioning member 62, the first limiting member 61 includes a mounting seat 611, a limiting stud and a limiting circular groove 612, the mounting seat 611 is mounted on the substrate 5, a through hole 613 is arranged on the mounting seat 611, the limiting stud is accommodated in the through hole 613, and one end of the limiting stud extends out of the through hole 613. The limiting circular groove 612 is arranged on the guide block 412. The positioning member 62 includes a fixing seat 621, a positioning column 622 and a positioning groove 623, the fixing seat 621 is mounted on the substrate 5 and arranged on one side of the fixing seat 611. The positioning column 622 is installed on the fixing seat 621. The positioning groove 623 is disposed on the mounting seat 611 , and the positioning column 622 is engaged with the positioning groove 623 .

[0036] When the first guide bevel 4111 overlaps with the second guide bevel 4211, the limiting stud falls into the limiting circular groove 612, and the pressure plate 3 presses the pole piece. When the first guide bevel 4111 moves away from the second guide bevel 4211, the limiting stud disengages from the limiting circular groove 612, and the pressure plate 3 moves upward away from the pole piece. Among them, the resistance when the positioning column 622 and the positioning groove 623 are engaged is greater than the resistance between the limiting stud and the limiting circular groove 612, so that the limiting stud disengages from the limiting circular groove 612. When the limiting stud disengages from the limiting circular groove 612, the pressure plate 3 rises upward at the same time, and the rising distance range is 0.2-0.3mm, which avoids the friction and scratches on the pole piece caused by the pressure plate 3 when it is pulled out upward after pressing the pole piece, protects the surface of the pole piece, and ensures the quality of the lamination.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the mounting seat 611 is provided with a receiving cavity 614 and an avoidance groove 615, the receiving cavity 614 and the avoidance groove 615 are communicated, and the lifting member 42 and the reset member 43 are installed in the receiving cavity 614. One end of the guide block 412 close to the first guide inclined surface 4111 is located in the avoidance groove 615, and the through hole 613 is provided at the upper end of the avoidance groove 615 and communicated with the avoidance groove 615, so as to facilitate the contact between the first guide inclined surface 4111 and the second guide inclined surface 4211.

[0038] like Figure 2 As shown, in some embodiments of the present invention, a guide bar 4122 is provided on the side of the guide block 412, and the guide bar 4122 is provided along the extension direction of the guide block 412. A slide groove 6151 is provided on the side of the avoidance groove 615, and the guide bar 4122 is slidably connected with the slide groove 6151, so that the driving member 2 drives the guide block 412 to reciprocate along the avoidance groove 615, so that the first guide inclined surface 4111 contacts the second guide inclined surface 4211.

[0039] like Figure 1-Figure 4 As shown, in some embodiments of the present invention, the limiting assembly further includes a second limiting member 63, the second limiting member 63 includes a limiting groove 631 and a limiting rod 632, the limiting groove 631 is arranged on both sides of the mounting seat 611 and extends in the vertical direction. One end of the limiting rod 632 passes through the limiting groove 631 and is connected to the lifting member 42. By setting the second limiting member 63, the height of the lifting member 42 rising or falling is limited.

[0040] like Figure 1 and Figure 2As shown, in some embodiments of the present invention, the moving assembly further includes a moving guide, the moving guide includes a guide rail 441 and a slider 442, and the guide rail 441 is installed on the substrate 5. The mounting seat 611 is installed on the guide rail 441 through the slider 442. By providing the moving guide, the mounting seat 611 moves along the guide rail 441 when the horizontal moving member 41 moves away from or approaches the placement table 1. When the positioning column 622 is engaged with the positioning groove 623, the displacement of the mounting seat 611 along the guide rail 441 is affected by the tightness of the engagement between the positioning column 622 and the positioning groove 623.

[0041] Furthermore, the slide seat 411 is provided with an avoidance hole for avoiding the guide rail 441 .

[0042] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the pole piece stacking device also includes a first guide assembly 71 and a second guide assembly 72, the first guide assembly 71 includes a first guide column 711 and a first guide sleeve 712, the first guide sleeve 712 is installed on the substrate 5, the first guide column 711 extends vertically, and one end of the first guide column 711 is connected to the placement table 1, and the other end of the first guide column 711 is slidably inserted into the first guide sleeve 712.

[0043] The second guide assembly 72 includes a second guide column 721 and a second guide sleeve 722. The second guide sleeve 722 is installed on the side of the placement table 1 away from the pole piece. The second guide column 721 extends vertically, and one end of the second guide column 721 is connected to the substrate 5, and the other end of the second guide column 721 is slidably inserted into the second guide sleeve 722.

[0044] In some embodiments of the present invention, the second guide assembly 72 further includes a buffer spring, which is sleeved on the outer periphery of the second guide column 721. When the pressure plate 3 presses the pole piece, the placement table 1 moves downward through the first guide assembly 71 and the second guide assembly 72 to prevent the pressure plate 3 from applying too much force to the pole piece and causing damage to the pole piece. By providing a buffer spring, when the pressure plate 3 leaves the pole piece, the impact force on the pole piece is buffered, and the placement table 1 is returned to its original position.

[0045] like Figure 1-Figure 4As shown, in some embodiments of the present invention, the sheet pressing mechanism further includes a mounting member 8, the mounting member 8 includes a first mounting plate 81 and a second mounting plate 82, the pressing plate 3 is mounted on the first mounting plate 81, and the first mounting plate 81 is movably and adjustably mounted on the second mounting plate 82 along the extension direction of the first mounting plate 81. The second mounting plate 82 is movably and adjustably mounted on the lifting member 42 along the extension direction of the second mounting plate 82. By adjusting the positions of the first mounting plate 81 and the second mounting plate 82, the position of the pressing plate 3 is adjusted, so that pole pieces of different sizes can be pressed.

[0046] like Figure 1-Figure 4 As shown, in some embodiments of the present invention, a first screw hole is provided on the second mounting plate 82 , and a second screw hole is provided on the lifting member 42 .

[0047] The first mounting plate 81 is provided with a first strip hole 811 along the extending direction of the first mounting plate 81 , and the first mounting plate 81 is mounted on the second mounting plate 82 by screwing a first screw through the first strip hole 811 and into the first screw hole.

[0048] The second mounting plate 82 is provided with a second strip hole 821 along the extending direction of the second mounting plate 82 , and the second mounting plate 82 is mounted on the lifting member 42 by a second screw passing through the second strip hole 821 and screwing into the second screw hole.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A pole piece lamination device, characterized in that: It includes a placement table for placing pole pieces and at least one pressing mechanism, wherein the pressing mechanism includes a driving member, two pressing plates and two moving components, and the two moving components are respectively arranged on both sides of the placement table; The moving assembly includes a horizontal moving member, a lifting member and a reset member, the horizontal moving member is provided with a first guiding inclined surface; the lifting member is provided with a second guiding inclined surface matched with the first guiding inclined surface, the first guiding inclined surface is connected to the second guiding inclined surface, one end of the lifting member is provided with a pressing plate, and the end of the lifting member away from the pressing plate is connected with the reset member; The driving member is connected to the two horizontal moving members. When the driving member drives the horizontal moving members to reciprocate in the horizontal direction, the reciprocating movement of the horizontal moving members drives the pressing plate on the lifting member to approach or move away from the placing platform; The horizontal moving member comprises a slide and a guide block, the slide is connected to the driving member; the guide block is mounted on the slide, and the first guide slope is arranged on an end of the guide block away from the slide; The lifting member comprises a guide groove, the second guide slope is arranged in the guide groove, and when the slide seat reciprocates in the horizontal direction, the first guide slope overlaps or moves away from the second guide slope; The pressing mechanism also includes a base plate and a limiting assembly, the driving member is mounted on the base plate, and the slide seat is arranged on both sides of the base plate; the limiting assembly includes a first limiting member and a positioning member, the first limiting member includes a mounting seat, a limiting stud and a limiting circular groove, the mounting seat is mounted on the base plate, a through hole is arranged on the mounting seat, the limiting stud is accommodated in the through hole, and one end of the limiting stud extends out of the through hole; the limiting circular groove is arranged on the guide block; the positioning member includes a fixing seat, a positioning column and a positioning groove, the fixing seat is mounted on the base plate and arranged on one side of the mounting seat; the positioning column is mounted on the fixing seat; the positioning groove is arranged on the mounting seat, and the positioning column is engaged with the positioning groove; When the first guide slope overlaps with the second guide slope, the limiting stud falls into the limiting circular groove, and the pressing plate presses the pole piece; when the first guide slope moves away from the second guide slope, the limiting stud is disengaged from the limiting circular groove, and the pressing plate moves upward away from the pole piece; The pressing mechanism also includes a mounting member, which includes a first mounting plate and a second mounting plate. The pressing plate is mounted on the first mounting plate, and the first mounting plate is movably and adjustably mounted on the second mounting plate along the extension direction of the first mounting plate; the second mounting plate is movably and adjustably mounted on the lifting member along the extension direction of the second mounting plate.

2. The pole piece stacking device according to claim 1, characterized in that: The mounting seat is provided with a receiving cavity and an avoidance groove, the receiving cavity and the avoidance groove are communicated, and the lifting member is installed in the receiving cavity; one end of the guide block close to the first guide slope is located in the avoidance groove, and the through hole is provided at the upper end of the avoidance groove and is communicated with the avoidance groove.

3. The pole piece stacking device according to claim 2, characterized in that: A guide bar is arranged on the side of the guide block, and the guide bar is arranged along the extension direction of the guide block; a slide groove is arranged on the side of the avoidance groove, and the guide bar is slidably connected to the slide groove, so that the driving member drives the guide block to reciprocate along the avoidance groove.

4. The pole piece stacking device according to claim 1, characterized in that: The limiting assembly also includes a second limiting member, which includes a limiting groove and a limiting rod. The limiting grooves are arranged on both sides of the mounting seat and extend in the vertical direction. One end of the limiting rod passes through the limiting groove and is connected to the lifting member.

5. The pole piece stacking device according to claim 1, characterized in that: The moving assembly also includes a moving guide, which includes a guide rail and a slider. The guide rail is installed on the base plate; the mounting seat is installed on the guide rail through the slider.

6. The pole piece stacking device according to claim 1, characterized in that: The pole piece stacking device further comprises a first guide assembly and a second guide assembly, wherein the first guide assembly comprises a first guide column and a first guide sleeve, wherein the first guide sleeve is mounted on the base plate, the first guide column extends vertically, and one end of the first guide column is connected to the placement table, and the other end of the first guide column is slidably inserted into the first guide sleeve; The second guide assembly includes a second guide column and a second guide sleeve. The second guide sleeve is installed on a side of the placement table away from the pole piece. The second guide column extends vertically, and one end of the second guide column is connected to the substrate, and the other end of the second guide column is slidably inserted into the second guide sleeve.

7. The pole piece stacking device according to claim 6, characterized in that: The second guide assembly also includes a buffer spring, and the buffer spring is sleeved on the outer periphery of the second guide column.

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