Lithium battery lamination mechanism and automatic lamination machine

Abstract

The utility model relates to the field of battery manufacturing, and discloses a lithium battery lamination mechanism which comprises a vertical frame, a transverse sliding plate, a support and a driving part, the left side and the right side of the support are provided with suction cups, the transverse sliding plate is slidably connected to the vertical frame in a left-right moving mode, and the support is slidably connected to the transverse sliding plate in an up-down moving mode. An n-shaped limiting groove is formed in the vertical frame, one end of the limiting shaft is fixedly connected to the support, the other end of the limiting shaft is connected into the limiting groove in a matched mode, the pushing mechanism is arranged on the vertical frame, the pushing end of the pushing mechanism is movably connected with the limiting shaft, and the driving part is fixedly connected to the support. The driving mechanism is used for driving the pushing mechanism to push the limiting shaft and the support to slide back and forth along the limiting groove. According to the utility model, only one driving piece is matched with the pushing mechanism to drive the bracket to adsorb the battery pole pieces on the left and right sides to the same position, the structure is simple, and only one driving piece is used, so that the control is greatly convenient.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing, and more specifically, to a lithium battery stacking mechanism. This utility model also relates to an automatic stacking machine. Background Technology

[0002] Existing stacked lithium batteries consist of multiple positive and negative electrode sheets stacked together, separated by a separator. Chinese patent application CN117335013A, entitled "A Stacking Machine for Lithium Battery Production," discloses the structure of a stacking machine. Its control components for completing the stacking action mainly include an electric slide rail, a transverse slide plate mounted on the electric slide rail, two connecting brackets on the left and right sides of the transverse slide plate, cylinders on the two connecting brackets, and electric suction cups on the two cylinders. During operation, the electric slide rail drives the transverse slide plate to move left and right, picking up the battery electrode sheets from the two sets of collection baskets and placing them onto the pressing assembly. Simultaneously, a guide shaft is provided on the transverse slide plate, with a separator passing through the middle of the guide shaft, achieving Z-shaped stacking. However, in this structure, the transverse slide plate requires the electric slide rail to drive its left and right movement, and each electric suction cup also requires a cylinder to drive its up and down movement. The excessive number of driving components leads to high costs, and the overall coordination and control are also quite complicated. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides a lithium battery stacking mechanism that is simple in structure and easy to control.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A lithium battery stacking mechanism includes a stand, a horizontal sliding plate, a bracket with suction cups on both sides, and a driving component. The horizontal sliding plate is slidably connected to the stand, which can move left and right. The bracket is slidably connected to the horizontal sliding plate, which can move up and down. The stand is provided with a "∩"-shaped limiting groove. It also includes a limiting shaft and a pushing mechanism. One end of the limiting shaft is fixedly connected to the bracket, and the other end is fitted into the limiting groove. The pushing mechanism is located on the stand, and its pushing end is movably connected to the limiting shaft. The driving component is fixedly connected to the bracket and is used to drive the pushing mechanism to push the limiting shaft and the bracket to slide back and forth along the limiting groove. When the bracket moves to the left and right ends of the limiting groove, the suction cups on the right and left sides are in the same position.

[0006] Furthermore, the pushing mechanism includes a swing arm, one end of which is hinged to the bracket and the hinge point is located in the middle of the limiting groove. The other end of the swing arm is provided with a strip groove whose length is along the swing radial direction. The other end of the limiting shaft is inserted into the strip groove. The driving member is used to drive the swing arm to swing back and forth.

[0007] Furthermore, the driving component is a rotary driving component that can rotate in both directions, and the pushing mechanism also includes a pushing block and a pushing shaft. The middle part of the pushing block is fixedly connected to the rotating shaft of the rotary driving component, one end of the pushing shaft is fixedly connected to a position other than the middle part of the pushing block, and the other end of the pushing shaft is hinged to the swing arm.

[0008] Furthermore, the stand includes a stand body, a fixing plate and a limiting plate. The fixing plate is fixedly connected to the stand body, the limiting plate is fixedly connected to the front of the fixing plate, the limiting groove is provided on the limiting plate, the swing arm is provided on the front of the limiting plate, both the fixing plate and the limiting plate are provided with arc-shaped grooves for the push shaft to pass through, and the rotary drive is fixedly connected to the back of the fixing plate.

[0009] Furthermore, the upright is provided with two parallel guide rails arranged laterally, and the horizontal sliding plate has two pieces and is slidably connected to the two guide rails respectively. The bracket is slidably connected to the two horizontal sliding plates.

[0010] Furthermore, the two transverse sliding plates are provided with sliding grooves on both the left and right sides. The bracket includes a connecting plate and two longitudinal sliding plates. The two longitudinal sliding plates are slidably connected to the sliding grooves on the left and right sides of the transverse sliding plates, respectively, and can move up and down. The two ends of the connecting plate are fixedly connected to the two longitudinal sliding plates, and one end of the limiting shaft is fixedly connected to the middle of the connecting plate. The lower ends of the two longitudinal sliding plates are provided with suction cups.

[0011] An automatic stacking machine includes a worktable, a film feeding mechanism, two feeding mechanisms disposed on the worktable, and a stacking platform located between the two feeding mechanisms. It also includes a stacking mechanism as described in any of the above claims. The stand of the stacking mechanism is fixedly connected to the worktable, and when the stand moves to the left and right ends of the limiting groove respectively, the suction cup on the right side and the suction cup on the left side are aligned with the stacking platform. The film feeding mechanism is disposed on the stand and the film outlet is located between the two suction cups.

[0012] Furthermore, the two feeding mechanisms are arranged symmetrically on the left and right. The feeding mechanism includes a picking and placing mechanism, two material boxes and a transfer platform. The transfer platform is close to the stacking platform. The picking and placing mechanism is used to pick up the battery electrode sheets one by one from the two material boxes and transfer them to the transfer platform. The transfer platform corrects the position of the battery electrode sheets placed on it one by one before supplying them to the stacking mechanism.

[0013] Furthermore, the feeding mechanism also includes a waste tray. The two material boxes, the transfer platform, and the waste tray are evenly arranged around the picking and placing mechanism, and the two material boxes are arranged opposite each other, the transfer platform and the waste tray are arranged opposite each other. The transfer platform also has an appearance defect screening function. If a battery electrode sheet with an appearance defect is screened out, it is picked up by the picking and placing mechanism and transferred to the waste tray.

[0014] Furthermore, the picking and placing mechanism includes a rotating arm, a suction cup component, and a drive motor. The rotating arm is fixedly connected to the rotating shaft of the drive motor, and the suction cup component is fixedly connected to the end of the rotating arm. The rotating arm can move up and down and can rotate, so that the suction cup component can follow the rotating arm to rotate above any of the two material boxes, the transfer table, and the waste tray.

[0015] In summary, the beneficial effects of this utility model are as follows: The bracket of this utility model can move left and right and up and down relative to the upright frame, and a "∩"-shaped limiting groove is provided on the upright frame. One end of the limiting shaft is fixedly connected, and the other end is fitted into the limiting groove. When the pushing mechanism pushes the limiting shaft to slide back and forth along the limiting groove, the entire bracket can move in a "∩" shape. When the bracket moves to the left and right ends of the limiting groove respectively, the suction cups on the right and left sides are in the same position. This action allows the suction cups on both sides to adsorb the battery electrodes placed on the left and right sides to the same position in the middle for stacking. This utility model uses only one driving component in conjunction with the pushing mechanism to drive the bracket to adsorb the battery electrodes on the left and right sides to the same position. The structure is simple, and using only one driving component greatly facilitates control. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the stacking mechanism of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the pushing mechanism and part of the upright frame of this utility model;

[0018] Figure 3 This is a front view schematic diagram of the automatic stacking machine of this utility model.

[0019] Reference numerals: 1. Stand; 10. Limiting shaft; 11. Stand body; 12. Fixing plate; 13. Limiting plate; 14. Guide rail; 111. Limiting groove; 2. Horizontal sliding plate; 3. Bracket; 31. Suction cup; 32. Longitudinal sliding plate; 33. Connecting plate; 41. Swing arm; 42. Push block; 43. Push shaft; 5. Driving component; 100. Worktable; 200. Film supply mechanism; 302. Material box; 304. Waste tray; 303. Transfer table; 3011. Drive motor; 3012. Suction cup component; 3013. Rotating arm; 400. Stacking table. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] like Figure 1 and Figure 2 The lithium battery stacking mechanism shown includes a stand 1, a horizontal slide plate 2, and a bracket 3. The bracket 3 has suction cups 31 on both its left and right sides. The bracket 3 has two parallel, horizontally arranged guide rails 14. The horizontal slide plate 2 consists of two pieces, each slidably connected to one of the two guide rails 14. Each of the two horizontal slide plates 2 has a groove on its left and right sides. The bracket 3 includes a connecting plate 33 and two vertical slide plates 32. The two vertical slide plates 32 are slidably connected to the grooves on the left and right sides of the horizontal slide plates 2, allowing them to move up and down. The two ends of the connecting plate 33 are fixedly connected to the two vertical slide plates 32. Two suction cups 31 are fixedly connected to the lower ends of the two vertical slide plates 32.

[0025] In the above structure, a horizontal sliding plate 2 that can move left and right along the guide rail 14 and a vertical sliding plate 32 that can move up and down along the horizontal sliding plate 2 are used, allowing the entire structure to move freely within a limited range in the vertical plane. A "∩"-shaped limiting groove 111 is provided on the support frame 1. One end of a limiting shaft 10 is fixedly connected to the middle of the connecting plate 33, and the other end is fitted into the limiting groove 111. Due to the limiting effect of the limiting groove 111, the limiting shaft 10 can only reciprocate along the limiting groove 111, thus subjecting the entire support 3 to the same movement restriction. Furthermore, when the support 3 moves to the left and right ends of the limiting groove 111 respectively, the suction cups 31 on the right and left sides are in the same position, allowing the battery electrodes on both sides to be attracted and brought to the same position for stacking.

[0026] To drive the limiting shaft 10 and the bracket 3 to reciprocate along the limiting groove 111, a pushing mechanism is provided and a driving component 5 is used, such as... Figure 1 and Figure 2 As shown, the pushing mechanism is mounted on the upright 1 and its pushing end is movably connected to the limiting shaft 10. The driving member 5 is fixedly connected to the bracket 3 to drive the pushing mechanism to push the limiting shaft 10 and the bracket 3 to slide back and forth along the limiting groove 111.

[0027] In one embodiment, the pushing mechanism includes a swing arm 41, a pushing block 42, and a pushing shaft 43. One end of the swing arm 41 is hinged to the bracket 3, with the hinge located in the middle of the limiting groove 111. The other end of the swing arm 41 has a strip-shaped groove with a length along the swing radial direction, and the other end of the limiting shaft 10 is inserted into the strip-shaped groove. The driving member 5 is a rotary driving member capable of forward and reverse rotation, such as a DD motor or an RV motor. The middle part of the pushing block 42 is fixedly connected to the rotating shaft of the rotary driving member, and one end of the pushing shaft 43 is fixedly connected to a position other than the middle part of the pushing block 42. The other end of the pushing shaft 43 is hinged to the swing arm 41. By rotating the rotary driving member in both directions, the pushing shaft 43 drives the swing arm 41 to swing left and right. Compared to directly connecting the rotating shaft of the rotary driving member to the swing arm 41 to drive its left and right rotation, this embodiment uses the pushing block 42 and the pushing shaft 43, which helps to reduce and filter out minor vibrations, making the overall swing more stable.

[0028] In one embodiment, such as Figure 2As shown, the support frame 1 includes a support body 11, a fixing plate 12, and a limiting plate 13. The fixing plate 12 is fixedly connected to the support body 11, and the limiting plate 13 is fixedly connected to the front side of the fixing plate 12. A limiting groove 111 is provided on the limiting plate 13, and the swing arm 41 is provided on the front side of the limiting plate 13. Both the fixing plate 12 and the limiting plate 13 have arc-shaped grooves for the push shaft 43 to pass through. The rotary drive component is fixedly connected to the back side of the fixing plate 12. Since the limiting groove 111 needs to bear the weight of the entire bracket 3, longitudinal slide plate 32, and other components supported by the limiting shaft 10, the limiting groove 111 is prone to wear during use. By separately setting the limiting groove 111 on the limiting plate 13, it is convenient to use a more wear-resistant material to manufacture the limiting plate 13, thereby improving durability. At the same time, it is also convenient to replace it when wear occurs after long-term use.

[0029] like Figure 3 The automatic stacking machine shown includes a worktable 100, a film supply mechanism 200, two feeding mechanisms mounted on the worktable 100, and a stacking platform 400 located between the two feeding mechanisms. It also includes the aforementioned stacking structure. The stand 1 of the stacking mechanism is fixedly connected to the worktable 100. When the support 3 moves to the left and right ends of the limiting groove 111, the suction cups 31 on the right and left sides align with the stacking platform 400. The film supply mechanism 200 is mounted on the support 3, and its outlet is located between the two suction cups 31. During operation, the support 3 of the stacking mechanism moves in a "∩" shape. The two suction cups 31 can respectively pick up the battery electrode sheets from the left and right feeding mechanisms and place them onto the stacking platform 400 in the middle. In conjunction with the film supply mechanism 200, during the reciprocating "∩" shaped movement, the separator can cover the battery electrode sheets on the stacking platform 400, resulting in a "Z" shaped film covering action.

[0030] In one embodiment, two feeding mechanisms are arranged symmetrically from left to right. Each feeding mechanism includes a picking and placing mechanism, two material boxes 302, and a transfer platform 303. The transfer platform 303 is located near the stacking platform 400. The picking and placing mechanism picks up battery electrodes one by one from the two material boxes 302 and transfers them to the transfer platform 303. The transfer platform 303 corrects the position of each battery electrode placed on it before supplying it to the stacking mechanism. When the support 3 of the stacking structure moves to the left end of the limiting groove 111, the left... The suction cup 31 on the side can pick up the battery electrode placed on the left transfer table 303. When it moves to the right end of the limiting groove 111, the suction cup 31 on the left places the battery electrode on the stacking table 400. At this time, the suction cup 31 on the right picks up the battery electrode placed on the right transfer table 303. When the bracket 3 moves to the left end of the limiting groove 111 again, the suction cup 31 on the right places the battery electrode on the stacking table 400. At this time, the suction cup 31 on the left picks up the battery electrode. This process is repeated.

[0031] In one embodiment, the feeding mechanism further includes a waste tray 304. Two material boxes 302, a transfer platform 303, and the waste tray 304 are evenly arranged around the pick-and-place mechanism, with the two material boxes 302 facing each other, and the transfer platform 303 and waste tray 304 facing each other. The transfer platform 303 also has a defect screening function; if defective battery electrodes are screened out, they are picked up by the pick-and-place mechanism and transferred to the waste tray 304. The two material boxes 302 are arranged facing each other, with one material box 302 positioned closer to the front of the platform for easy placement of commonly used battery electrodes.

[0032] In addition, the picking and placing mechanism includes a rotating arm 3013, a suction cup 3012, and a drive motor 3011. The rotating arm 3013 is fixedly connected to the rotating shaft of the drive motor 3011, and the suction cup 3012 is fixedly connected to the end of the rotating arm 3013. The rotating arm 3013 can move up and down and rotate, allowing the suction cup 3012 to rotate with the rotating arm 3013 to be above any of the two material boxes 302, the transfer platform 303, and the waste tray 304. Since the material boxes 302, the transfer platform 303, and the waste tray 304 are evenly arranged around the picking and placing mechanism, the rotating arm 3013 can transfer the battery electrode from the material box 302 to the transfer platform 303 every 90° rotation, which shortens the angular travel of the rotating arm 3013 and improves the working efficiency.

[0033] This utility model discloses an automatic stacking machine with four material boxes 302 in two sets of feeding mechanisms on the left and right sides. Different battery electrode sheets can be reversed as needed to complete the stacking operation of batteries with different stacking methods. For example, double-sided coated positive electrode sheets, double-sided coated negative electrode sheets, and two types of single-sided coated battery electrode sheets with opposite coating orientations can be placed in the four material boxes 302. This is suitable for stacking batteries that only use thermosetting curing. For this type of battery, the machine will first grab the two types of single-sided coated battery electrode sheets with opposite coating orientations at the beginning and end, grab only the positive and negative electrode sheets in the middle, and finally, the coatings of the outermost two battery electrode sheets will face inward.

[0034] The above embodiments are merely explanations of the present utility model and are not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to the embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

Claims

1. A lithium battery stacking mechanism, comprising a stand, a transverse sliding plate, a bracket with suction cups on both the left and right sides, and a driving component, characterized in that: The horizontal sliding plate is slidably connected to the upright frame, which can move left and right. The bracket is slidably connected to the horizontal sliding plate, which can move up and down. The upright frame is provided with a "∩"-shaped limiting groove, and also includes a limiting shaft and a pushing mechanism. One end of the limiting shaft is fixedly connected to the bracket and the other end is fitted into the limiting groove. The pushing mechanism is located on the upright frame and its pushing end is movably connected to the limiting shaft. The driving component is fixedly connected to the bracket and is used to drive the pushing mechanism to push the limiting shaft and the bracket to slide back and forth along the limiting groove. When the bracket moves to the left and right ends of the limiting groove respectively, the suction cup on the right and the suction cup on the left are in the same position.

2. The lithium battery stacking mechanism according to claim 1, characterized in that: The pushing mechanism includes a swing arm, one end of which is hinged to a bracket and the hinge point is located in the middle of a limiting groove. The other end of the swing arm is provided with a strip groove whose length is along the swing radial direction. The other end of the limiting shaft is inserted into the strip groove. The driving member is used to drive the swing arm to swing back and forth.

3. A lithium battery stacking mechanism according to claim 2, characterized in that: The driving component is a rotary driving component that can rotate in both directions. The pushing mechanism also includes a pushing block and a pushing shaft. The middle part of the pushing block is fixedly connected to the rotating shaft of the rotary driving component. One end of the pushing shaft is fixedly connected to a position other than the middle part of the pushing block, and the other end of the pushing shaft is hinged to the swing arm.

4. A lithium battery stacking mechanism according to claim 3, characterized in that: The stand includes a stand body, a fixing plate and a limiting plate. The fixing plate is fixedly connected to the stand body, the limiting plate is fixedly connected to the front of the fixing plate, the limiting groove is provided on the limiting plate, the swing arm is provided on the front of the limiting plate, both the fixing plate and the limiting plate are provided with arc-shaped grooves for the push shaft to pass through, and the rotary drive is fixedly connected to the back of the fixing plate.

5. A lithium battery stacking mechanism according to claim 1, characterized in that: The upright frame is provided with two parallel guide rails arranged laterally to the left and right. The horizontal sliding plate has two pieces and is slidably connected to the two guide rails respectively. The bracket is slidably connected to the two horizontal sliding plates.

6. A lithium battery stacking mechanism according to claim 5, characterized in that: The two horizontal sliding plates are provided with grooves on both sides. The bracket includes a connecting plate and two vertical sliding plates. The two vertical sliding plates are slidably connected to the grooves on the left and right sides of the horizontal sliding plates, respectively, and can move up and down. The two ends of the connecting plate are fixedly connected to the two vertical sliding plates. One end of the limiting shaft is fixedly connected to the middle of the connecting plate. The lower ends of the two vertical sliding plates are provided with suction cups.

7. An automatic stacking machine, comprising a worktable, a film feeding mechanism, two feeding mechanisms disposed on the worktable, and a stacking table located between the two feeding mechanisms, characterized in that: It also includes a stacking mechanism as described in any one of claims 1 to 6, wherein the stand of the stacking mechanism is fixedly connected to the worktable, and when the support moves to the left and right ends of the limiting groove respectively, the suction cup on the right and the suction cup on the left are aligned with the stacking table, and the film supply mechanism is provided on the support and the film outlet is located between the two suction cups.

8. An automatic stacking machine according to claim 7, characterized in that: Two feeding mechanisms are arranged symmetrically on the left and right. Each feeding mechanism includes a picking and placing mechanism, two material boxes, and a transfer platform. The transfer platform is close to the stacking platform. The picking and placing mechanism is used to pick up battery electrode sheets one by one from the two material boxes and transfer them to the transfer platform. The transfer platform corrects the position of each battery electrode sheet placed on it and then supplies them to the stacking mechanism.

9. An automatic stacking machine according to claim 8, characterized in that: The feeding mechanism also includes a waste tray. The two material boxes, the transfer platform and the waste tray are evenly arranged around the picking and placing mechanism. The two material boxes are arranged opposite each other, and the transfer platform and the waste tray are arranged opposite each other. The transfer platform also has an appearance defect screening function. If a battery electrode sheet with an appearance defect is screened out, it is picked up and transferred by the picking and placing mechanism and placed on the waste tray.

10. An automatic stacking machine according to claim 9, characterized in that: The picking and placing mechanism includes a rotating arm, a suction cup component, and a drive motor. The rotating arm is fixedly connected to the rotating shaft of the drive motor, and the suction cup component is fixedly connected to the end of the rotating arm. The rotating arm can move up and down and can rotate, so that the suction cup component can follow the rotating arm to rotate above any of the two material boxes, the transfer table, and the waste tray.

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