Lithium battery roll core broaching device

Abstract

The utility model relates to and discloses a lithium battery roll core broaching device. Relates to the technical field of core reaming. The device specifically comprises a bottom plate, a placing block arranged on the bottom plate, a core blocking mechanism arranged on the bottom plate, and a needle pushing mechanism arranged on the bottom plate; the placing block is used for placing a roll core, and the clamping mechanism and the needle pushing mechanism are arranged on the two opposite sides of the placing block respectively. When the lithium battery roll core broaching machine is used for broaching a lithium battery roll core, the lithium battery roll core is firstly placed on the placing block, then the lithium battery roll core on the placing block is pushed into the core blocking mechanism through the needle pushing mechanism to broach the lithium battery roll core, and then the lithium battery roll core is pushed onto the placing block through the core blocking mechanism, so that feeding and discharging of the lithium battery roll core are achieved, and the lithium battery roll core broaching efficiency is improved. According to the lithium battery roll core broaching device, broaching operation is carried out on the placement block located between the core blocking mechanism and the needle pushing mechanism, so that broaching operation of the lithium battery roll core can be simpler, more convenient and easier to implement, and the risk that hands of workers are pinched in the broaching process of the lithium battery roll core is prevented.

Description

Technical Field

[0001] This utility model relates to the field of core enlargement technology, and in particular to a lithium battery core enlargement device. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental conditions. With the development of science and technology, lithium-ion batteries have now become the mainstream. In the manufacturing process of lithium-ion batteries, it is necessary to enlarge the center of the lithium-ion battery core to make the battery more stable and compact.

[0003] For example, Chinese utility model patent CN216488213U discloses a lithium battery core enlarging device to prevent springback after enlarging. The device includes a base plate, with a horizontally axially displaceable enlarging pin on one side above the base plate. Two mutually movable expansion plates are symmetrically arranged on the outer surface of the enlarging pin, moving away from or close to each other. Two mutually movable clamping plates are symmetrically arranged on the other side above the base plate, moving away from or close to each other. The cross-sections of the expansion plates and clamping plates are semi-circular. This enlarging device performs the enlarging operation on lithium battery cores by first feeding the lithium battery core into a clamping mechanism in its original position, then clamping and fixing the lithium battery core using the clamping mechanism, enlarging the fixed lithium battery core, and finally releasing the clamping mechanism from the lithium battery core and removing the enlarged lithium battery core from the clamping mechanism to its original position.

[0004] However, during the enlargement process, the patent requires workers to hold the lithium battery core and feed it from its original position into the clamping mechanism for clamping. After the enlargement is completed, workers also need to hold the lithium battery core and remove it from the clamping mechanism to its original position. This makes the enlargement operation of the lithium battery core difficult and hard to implement, and there is a risk of pinching the workers' hands during the clamping process. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the prior art by providing a lithium battery core enlarging device that makes the enlarging operation of lithium battery cores simpler, more convenient, and easier to implement, while preventing the risk of pinching workers' hands during the enlarging process of lithium battery cores.

[0006] This utility model proposes a lithium battery core enlargement device, including a base plate, a placement block disposed on the base plate, a core-blocking mechanism disposed on the base plate, and a pusher mechanism disposed on the base plate; the placement block is used to place the core, the core-blocking mechanism and the pusher mechanism are respectively disposed on opposite sides of the placement block, the pusher mechanism is used to push the core on the placement block to the core-blocking mechanism and to enlarge the core confined in the core-blocking mechanism, the core-blocking mechanism is also used to push the enlarged core to the placement block.

[0007] Furthermore, the hole-expanding device also includes a driving mechanism for driving the core-stopping mechanism and the pusher mechanism to move. The pusher mechanism moves to push the core on the placement block to the core-stopping mechanism and to expand the hole of the core that is confined in the core-stopping mechanism. The core-stopping mechanism moves to push the expanded core to the placement block.

[0008] Furthermore, the driving mechanism includes a support frame mounted on the base plate, a screw arranged horizontally on the support frame, a drive motor mounted on the support frame, a threaded sleeve sleeved on the screw, and a first connecting rod mounted on the threaded sleeve. The drive motor is used to drive the screw to rotate, the threaded sleeve is slidably connected to the support frame, and the first connecting rod is connected to the core-stopping mechanism and the push-pin mechanism.

[0009] Furthermore, the pusher mechanism includes a reaming pin disposed on the first side of the placement block, a first pusher plate disposed on the reaming pin, and a pusher rod connecting the first pusher plate and the drive mechanism. The pusher rod drives the reaming pin to move. The reaming pin is used to push the core on the placement block to the core-blocking mechanism and to ream the core that is confined in the core-blocking mechanism. The first pusher plate abuts against the core.

[0010] Furthermore, the pusher mechanism also includes a limiting cylinder disposed on the base plate, the limiting cylinder having a limiting groove, one end of the push rod extending into the limiting groove and the other end extending out of the limiting groove, the limiting cylinder having a first sliding groove along the axial direction, the first sliding groove communicating the limiting groove with the outside, one end of the drive mechanism passing through the first sliding groove and extending into the limiting groove, the end of the push rod extending into the limiting groove being fixedly connected to the drive mechanism, and the end extending out of the limiting groove being fixedly connected to the first push plate.

[0011] Furthermore, the core-blocking mechanism includes a clamping cylinder disposed on the second side of the placement block, a core-pushing assembly extending into the clamping cylinder, and a drive connector connecting the core-pushing assembly and the drive mechanism. The clamping cylinder is used to limit the core circumferentially, the core-pushing assembly abuts against the end of the core, and the drive connector is used to drive the core-pushing assembly to move.

[0012] Furthermore, the placement block is provided with an arc-shaped groove, which is adapted to the outer contour of the core and is used to limit the core. The clamping cylinder is provided with a clamping groove for limiting the core circumferentially, and the clamping groove is connected to the arc-shaped groove.

[0013] Furthermore, the drive connector includes a sliding cylinder fixedly connected to the pusher assembly, and a drive rod connecting the sliding cylinder and the drive mechanism. The sliding cylinder has a cavity, one end of the drive rod extends into the cavity, and a limiting plate is provided at the end of the drive rod extending into the cavity. The limiting plate is slidably connected to the inner wall of the cavity.

[0014] Furthermore, the pusher assembly includes a second push plate disposed in the clamping cylinder, and a second connecting rod with one end extending into the clamping cylinder and the other end extending out of the clamping cylinder. The end of the second connecting rod extending into the clamping cylinder is fixedly connected to the second push plate, and the end extending out of the clamping cylinder is fixedly connected to the drive connector. A second sliding groove is provided on the clamping cylinder along the axial direction, and the second sliding groove communicates the clamping groove with the outside. The middle part of the second connecting rod slides in cooperation with the second sliding groove.

[0015] Furthermore, a guide rod is provided on the clamping cylinder along the axial direction, and a displacement plate is provided at one end of the second connecting rod extending out of the clamping cylinder. The guide rod is used to guide the displacement plate, and the displacement plate is fixedly connected to the driving connector.

[0016] The lithium battery winding hole enlargement device proposed in this utility model has the following beneficial effects:

[0017] (1) When this hole-expanding device expands the hole of the lithium battery core, the lithium battery core is first placed on the placement block, and then the lithium battery core on the placement block is pushed into the core-blocking mechanism through the push pin mechanism to expand the hole of the lithium battery core. Then the lithium battery core is pushed onto the placement block through the core-blocking mechanism, which makes the hole-expanding operation of the lithium battery core simpler and more convenient, easier to implement, and prevents the risk of pinching the hands of the workers during the hole-expanding process of the lithium battery core.

[0018] (2) The operation of the pusher mechanism of this hole-expanding device pushing the lithium battery core into the core-blocking mechanism, the pusher mechanism expanding the lithium battery core in the core-blocking mechanism, and the core-blocking mechanism pushing the lithium battery core into the placement block are all carried out under the drive of the drive mechanism. This makes the hole-expanding operation of the lithium battery core simpler, more convenient and easier to implement, and makes the structure of this lithium battery core hole-expanding device more compact, thus enhancing the practicality of this lithium battery core hole-expanding device.

[0019] (3) The support frame of this hole-expanding device can adopt an L-shaped structure composed of vertical rails and horizontal beams. The vertical beams are set on the base plate, and the horizontal beams are set on the top of the vertical beams. A sliding groove is provided on the horizontal beam along the axial direction. The screw is set in the sliding groove. When the threaded sleeve is sleeved on the screw, the two side walls of the threaded sleeve are slidably connected to the two side walls of the sliding groove, so that when the screw rotates, the threaded sleeve is guided by the sliding groove, so that the threaded sleeve moves linearly along the sliding groove, thereby making the operation of the drive mechanism more stable.

[0020] (4) The pusher mechanism of this hole-expanding device includes a hole-expanding needle, a first push plate, and a push rod. The hole-expanding needle is disposed on the first side of the placement block, the first push plate is disposed on the hole-expanding needle, and the push rod connects the first push plate to the driving mechanism. Specifically, one end of the push rod is fixedly connected to the first push plate, and the other end is fixedly connected to the first connecting rod, so that when the first connecting rod moves in a straight line, the push rod, the first push plate, and the hole-expanding needle move in a straight line synchronously.

[0021] (5) The limiting cylinder of this hole enlargement device is provided with a first sliding groove along the axial direction. The first sliding groove connects the limiting groove to the outside. One end of the first connecting rod passes through the first sliding groove and extends into the limiting groove. The end of the first connecting rod extending into the limiting groove is fixedly connected to the end of the push rod extending into the limiting groove. The linear movement of the first connecting rod is limited by the first sliding groove, and the linear movement of the push rod is limited by the limiting groove. This makes the operation of the push needle mechanism more stable, thereby improving the stability of the structure of this lithium battery core hole enlargement device.

[0022] (6) A guide rod is provided on the clamping cylinder of this hole expansion device along the axial direction. When the sliding cylinder drives the displacement plate and the second connecting rod to move linearly, the guide rod guides the displacement plate, thereby making the linear movement of the displacement plate and the second connecting rod more stable, and thus making the action of the second push plate to push the lithium battery core from the clamping groove to the arc groove more stable. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements.

[0024] Figure 1 This is a schematic diagram of the structure of a lithium battery core enlarging device according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a lithium battery core enlarging device according to an embodiment of the present invention, showing the placement block and clamping cylinder arranged on the base plate;

[0026] Figure 3 This is a schematic diagram of the structure of a lithium battery core enlarging device according to an embodiment of the present invention, showing the pusher mechanism and drive mechanism mounted on the base plate.

[0027] Figure 4 This is a schematic diagram showing the connection between the drive mechanism, the core-blocking mechanism, and the pusher mechanism of a lithium battery core-expanding device according to an embodiment of the present invention.

[0028] Figure 5 for Figure 4 A schematic diagram of the cross-section of the sliding cylinder at point A.

[0029] In the diagram: 1. Base plate; 2. Placement block; 21. Arc groove; 3. Core retaining mechanism; 31. Clamping cylinder; 311. Clamping groove; 312. Second sliding groove; 313. Guide rod; 32. Sliding cylinder; 321. Cavity; 33. Drive rod; 331. Limiting plate; 34. Second push plate; 35. Second connecting rod; 351. Displacement plate; 4. Push needle mechanism; 41. Hole expanding needle; 42. First push plate; 43. Push rod; 44. Limiting cylinder; 441. Limiting groove; 442. First sliding groove; 5. Drive mechanism; 51. Support frame; 52. Screw; 53. Drive motor; 54. Threaded sleeve; 55. First connecting rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Please see Figures 1-5 This utility model discloses a lithium battery core enlarging device, comprising a base plate 1, a placement block 2, a core-blocking mechanism 3, and a pusher mechanism 4. The placement block 2, the core-blocking mechanism 3, and the pusher mechanism 4 are all disposed on the base plate 1. The core-blocking mechanism 3 is disposed on one side of the placement block 2, and the pusher mechanism 4 is disposed on the other side of the placement block 2, opposite to the core-blocking mechanism 3. When enlarging the lithium battery core, the lithium battery core is first placed on the placement block 2 located between the core-blocking mechanism 3 and the pusher mechanism 4.

[0032] The lithium battery core on the placement block 2 is then pushed into the core-blocking mechanism 3 by the pusher mechanism 4, so that the core-blocking mechanism 3 limits the lithium battery core; then the lithium battery core is enlarged by the pusher mechanism 4, so that the inner diaphragm of the lithium battery core shrinks, thereby obtaining the center hole structure of the lithium battery core; finally, the lithium battery core is pushed onto the placement block 2 by the core-blocking mechanism 3, and the lithium battery core is unloaded on the placement block 2, so that the enlargement operation of the lithium battery core is simpler, more convenient and easier to implement.

[0033] Since the loading and unloading of lithium battery cores are both carried out on the placement block 2 located between the core-blocking mechanism 3 and the pusher mechanism 4, the risk of pinching workers' hands during the loading and unloading of lithium battery cores can be prevented.

[0034] In this embodiment, the lithium battery core enlargement device further includes a driving mechanism 5, which drives the core-blocking mechanism 3 and the pusher mechanism 4 to move. The pusher mechanism 4 moves to push the lithium battery core on the placement block 2 to the core-blocking mechanism 3 and to enlarge the lithium battery core located in the core-blocking mechanism 3. The core-blocking mechanism 3 moves to push the lithium battery core to the placement block 2.

[0035] In this patent, when the lithium battery core is placed on the placement block 2, the pusher mechanism 4 is first driven by the drive mechanism 5 to move, so that the pusher mechanism 4 pushes the lithium battery core on the placement block 2 into the core-blocking mechanism 3. At this time, the core-blocking mechanism 3 limits the lithium battery core and prevents the lithium battery core from moving. Then, the pusher mechanism 4 is driven by the drive mechanism 5 to continue to move, so that the pusher mechanism 4 enlarges the hole of the lithium battery core in the core-blocking mechanism 3, thereby forming a central hole at the center of the lithium battery core.

[0036] After the hole enlargement is completed, the drive mechanism 5 first drives the pusher mechanism 4 to move in the opposite direction, so that the pusher mechanism 4 is pulled out from the center hole of the lithium battery core. Then, the core blocking mechanism 3 is driven to move, so that the core blocking mechanism 3 pushes the enlarged lithium battery core onto the placement block 2. Finally, the lithium battery core is unloaded on the placement block 2.

[0037] In this application, the operations of the pusher mechanism 4 pushing the lithium battery core into the core-blocking mechanism 3, the pusher mechanism 4 enlarging the lithium battery core in the core-blocking mechanism 3, and the core-blocking mechanism 3 pushing the lithium battery core into the placement block 2 are all performed under the drive of the drive mechanism 5. This makes the enlarging operation of the lithium battery core simpler, more convenient, and easier to implement, and also makes the structure of the lithium battery core enlarging device more compact, thus enhancing the practicality of the lithium battery core enlarging device.

[0038] Specifically, in this embodiment, the drive mechanism 5 includes a support frame 51, a screw 52, ​​and a drive motor 53. The support frame 51 is mounted on the base plate 1, and the screw 52 is arranged horizontally on the support frame 51 and rotatably connected to the support frame 51. The drive motor 53 is fixedly mounted on the support frame 51, and the shaft of the drive motor 53 is fixedly connected to the screw 52, ​​so that when the drive motor 53 is running, it drives the screw 52 to rotate.

[0039] The drive mechanism 5 also includes a threaded sleeve 54 and a first connecting rod 55. When the threaded sleeve 54 is fitted onto the screw 52, ​​the internal thread of the threaded sleeve 54 engages with the external thread of the screw 52. Since the threaded sleeve 54 is slidably connected to the support frame 51, when the screw 52 rotates, the threaded sleeve 54 is driven to move linearly on the support frame 51 through the engagement of the internal thread of the threaded sleeve 54 with the external thread of the screw 52.

[0040] One end of the first connecting rod 55 is fixedly connected to the threaded sleeve 54, and the other end is fixedly connected to the core retaining mechanism 3 and the pusher mechanism 4 respectively. Therefore, when the threaded sleeve 54 moves in a straight line on the support frame 51, it drives the first connecting rod 55 to move in a straight line synchronously. Thus, the first connecting rod 55 drives the core retaining mechanism 3 and the pusher mechanism 4 to move, which makes the enlargement operation of the lithium battery core simpler, more convenient and easier to implement, and makes the structure of this lithium battery core enlargement device more compact.

[0041] In actual implementation, the support frame 51 can adopt an L-shaped structure composed of vertical rails and horizontal beams. The vertical beams are set on the base plate 1, and the horizontal beams are set on top of the vertical beams. A sliding groove is provided on the horizontal beam along the axial direction. The screw 52 is set in the sliding groove. When the threaded sleeve 54 is sleeved on the screw 52, ​​the two side walls of the threaded sleeve 54 are slidably connected to the two side walls of the sliding groove, so that when the screw 52 rotates, the threaded sleeve 54 is guided by the sliding groove, so that the threaded sleeve 54 moves linearly along the sliding groove, thereby making the operation of the drive mechanism 5 more stable.

[0042] Specifically, in this embodiment, the pusher mechanism 4 includes a reaming pin 41, a first push plate 42, and a push rod 43. The reaming pin 41 is disposed on the first side of the placement block 2, the first push plate 42 is disposed on the reaming pin 41, and the push rod 43 connects the first push plate 42 to the drive mechanism 5. Specifically, one end of the push rod 43 is fixedly connected to the first push plate 42, and the other end is fixedly connected to the first connecting rod 55, so that when the first connecting rod 55 moves in a straight line, the push rod 43, the first push plate 42, and the reaming pin 41 are driven to move synchronously in a straight line.

[0043] When the first connecting rod 55 drives the push rod 43, the first push plate 42 and the expanding needle 41 to move synchronously in a straight line, the expanding needle 41 first pushes the lithium battery core on the placement block 2 into the core-blocking mechanism 3; after the core-blocking mechanism 3 limits the lithium battery core, the first connecting rod 55 continues to drive the push rod 43, the first push plate 42 and the expanding needle 41 to move in a straight line, so that the expanding needle 41 expands the hole of the lithium battery core until the first push plate 42 abuts against the lithium battery core, thereby forming a center hole at the center position of the lithium battery core.

[0044] After the hole enlargement is completed, the first connecting rod 55 drives the push rod 43, the first push plate 42 and the enlargement needle 41 to move in opposite linear directions, so that the enlargement needle 41 is pulled out from the center hole of the lithium battery core. Then, the first connecting rod 55 drives the core-blocking mechanism 3 to move, so that the core-blocking mechanism 3 pushes the enlarged lithium battery core onto the placement block 2. Finally, the lithium battery core is unloaded on the placement block 2, which makes the hole enlargement operation of the lithium battery core simpler, more convenient and easier to implement, and prevents the risk of pinching the workers' hands during the hole enlargement process of the lithium battery core.

[0045] Furthermore, in this embodiment, the pusher mechanism 4 also includes a limiting cylinder 44, which is disposed on the base plate 1. A limiting groove 441 is provided in the limiting cylinder 44, one end of the push rod 43 extends into the limiting groove 441, and the other end extends out of the limiting groove 441, and the end of the push rod 43 extending out of the limiting groove 441 is fixedly connected to the first push plate 42.

[0046] A first sliding groove 442 is provided axially on the limiting cylinder 44, which connects the limiting groove 441 to the outside. One end of the driving mechanism 5 passes through the first sliding groove 442 and extends into the limiting groove 441. Specifically, one end of the first connecting rod 55 passes through the first sliding groove 442 and extends into the limiting groove 441, and the end of the first connecting rod 55 extending into the limiting groove 441 is fixedly connected to the end of the push rod 43 extending into the limiting groove 441.

[0047] Therefore, when the first connecting rod 55 moves linearly along the first sliding groove 442, it drives the push rod 43 to move linearly along the limiting groove 441, thereby causing the first push plate 42 and the expanding pin 41 to move linearly synchronously. During this process, the first sliding groove 442 limits the linear movement of the first connecting rod 55, and at the same time, the limiting groove 441 limits the linear movement of the push rod 43, thereby making the operation of the push pin mechanism 4 more stable, and thus improving the stability of the structure of this lithium battery core expanding device.

[0048] Specifically, in this embodiment, the core-blocking mechanism 3 includes a clamping cylinder 31 and a core-pushing assembly. The clamping cylinder 31 is disposed on the second side of the placement block 2. The first side and the second side of the placement block 2 are opposite sides, that is, the clamping cylinder 31 and the expanding needle 41 are disposed on opposite sides of the placement block 2, and the core-pushing assembly extends into the clamping cylinder 31.

[0049] When the expanding needle 41 moves to contact the lithium battery core on the placement block 2, it pushes the lithium battery core to move synchronously, thereby pushing the lithium battery core on the placement block 2 into the clamping cylinder 31 until the end of the lithium battery core contacts the pusher assembly in the clamping cylinder 31. At this time, the clamping cylinder 31 limits the circumference of the lithium battery core, and the pusher assembly limits one end of the lithium battery core. Then, as the expanding needle 41 continues to move, it expands the hole in the lithium battery core.

[0050] The core-blocking mechanism 3 also includes a drive connector, which connects the core-pushing assembly to the first connecting rod 55 of the drive mechanism 5. The first connecting rod 55 moves linearly, driving the core-pushing assembly to move, so that the core-pushing assembly pushes the enlarged lithium battery core onto the placement block 2. Finally, the lithium battery core is unloaded onto the placement block 2, making the enlargement operation of the lithium battery core simpler, more convenient, and easier to implement, and preventing the risk of pinching the worker's hand during the enlargement process of the lithium battery core.

[0051] Furthermore, in this embodiment, the placement block 2 is provided with an arc-shaped groove 21, which is adapted to the outer contour of the battery core. When the lithium battery core is placed on the placement block 2, the arc-shaped groove 21 limits the lithium battery core, thereby making the placement of the lithium battery core on the placement block 2 more stable and preventing the lithium battery core from falling off the placement block 2 during movement, which would affect the enlargement of the lithium battery core.

[0052] A clamping groove 311 is provided in the clamping cylinder 31, and the clamping groove 311 is connected to the arc-shaped groove 21. It can be foreseen that in this patent, when the clamping cylinder 31 and the expanding needle 41 are arranged opposite each other on both sides of the placement block 2, the central axes of the clamping groove 311, the arc-shaped groove 21 and the expanding needle 41 are on the same horizontal straight line. Therefore, when the expanding needle 41 pushes the lithium battery core on the placement block 2 to move, it can push the lithium battery core on the arc-shaped groove 21 into the clamping groove 311, so that the clamping groove 311 limits the circumferential movement of the lithium battery core.

[0053] The pusher assembly extends into the clamping groove 311. When the lithium battery core moves to the end and abuts against the pusher assembly, the pusher assembly limits the end of the lithium battery core on one side, and then expands the hole of the lithium battery core as the expanding needle 41 continues to move.

[0054] In this embodiment, the drive connector includes a sliding cylinder 32 and a drive rod 33. The sliding cylinder 32 is fixedly connected to the pusher assembly, and the drive rod 33 connects the sliding cylinder 32 to the drive mechanism 5. Specifically, a cavity 321 is provided in the sliding cylinder 32, one end of the drive rod 33 extends into the cavity 321, and a limiting disk 331 is provided at the end of the drive rod 33 extending into the cavity 321. The limiting disk 331 is slidably connected to the inner wall of the cavity 321, and the end of the drive rod 33 extending out of the cavity 321 is fixedly connected to the first connecting rod 55.

[0055] When the first connecting rod 55 moves linearly, it drives the expanding needle 41 to move linearly, so that the expanding needle 41 pushes the lithium battery core on the arc groove 21 into the clamping groove 311. Through the sliding engagement of the limiting plate 331 with the inner wall of the cavity 321, the driving rod 33 moves linearly along the cavity 321 under the push of the first connecting rod 55, while the sliding cylinder 32 and the core pusher assembly remain relatively fixed.

[0056] Therefore, when the end of the lithium battery core comes into contact with the pusher assembly located in the clamping cylinder 31, the pusher assembly limits one end of the lithium battery core, preventing the lithium battery core from moving, so that the lithium battery core can be enlarged when the expanding needle 41 continues to move.

[0057] After the hole enlargement is completed, the first connecting rod 55 drives the hole enlargement needle 41 to move in the opposite direction in a straight line. At this time, driven by the first connecting rod 55, the driving rod 33 extends into the limiting plate 331 at one end of the cavity 321 and moves in the opposite direction in the cavity 321. At this time, the sliding cylinder 32 and the core pusher assembly remain relatively fixed until the hole enlargement needle 41 is pulled out from the center hole of the lithium battery core, and the limiting plate 331 abuts against the end of the cavity 321 in the sliding cylinder 32.

[0058] Therefore, when the first connecting rod 55 continues to drive the expanding needle 41 and the driving rod 33 to move in the opposite direction, the limiting plate 331 abuts against the end of the hollow cavity 321 in the sliding cylinder 32, which can drive the sliding cylinder 32 and the core pusher assembly to move synchronously. This allows the core pusher assembly to push the lithium battery core from the clamping groove 311 to the arc groove 21, and finally unload the lithium battery core onto the placement block 2. This makes the enlarging operation of the lithium battery core simpler, more convenient, and easier to implement, and prevents the risk of pinching the worker's hand during the enlarging process of the lithium battery core.

[0059] Specifically, in this embodiment, the pusher assembly includes a second pusher plate 34 and a second connecting rod 35. The second pusher plate 34 is disposed in the clamping groove 311 of the clamping cylinder 31. A second sliding groove 312 is provided axially on the clamping cylinder 31, which connects the clamping groove 311 to the outside. One end of the second connecting rod 35 extends into the clamping groove 311 through the second sliding groove 312, and the other end extends outside the clamping groove 311.

[0060] In this patent, the second groove 312 is not fully distributed on the clamping cylinder 31. Specifically, the end of the second groove 312 near the placement block 2 is open, and the end away from the placement block 2 is closed. Initially, the middle part of the second connecting rod 35 abuts against the side wall of the closed end of the second groove 312.

[0061] When the expanding needle 41 pushes the lithium battery core on the arc groove 21 into the clamping groove 311, the drive rod 33 extends into the limiting plate 331 at one end of the cavity 321 and moves linearly in the cavity 321. At this time, the sliding cylinder 32 and the core pusher assembly remain relatively fixed. Under the limiting action of the second sliding groove 312 on the second connecting rod 35, when the end of the lithium battery core abuts against the second push plate 34 located in the clamping cylinder 31, the second push plate 34 limits one end of the lithium battery core, preventing the lithium battery core from moving. Thus, when the expanding needle 41 continues to move, the lithium battery core can be expanded.

[0062] Since one end of the second connecting rod 35 extends into the clamping groove 311 and is fixedly connected to the second push plate 34, and the other end extends out of the clamping groove 311 and is fixedly connected to the sliding cylinder 32 of the drive connector, and the middle part of the second connecting rod 35 slides in cooperation with the second sliding groove 312.

[0063] Therefore, after the expanding needle 41 is pulled out from the center hole of the lithium battery core, it abuts against the end of the cavity 321 in the sliding cylinder 32 through the limiting plate 331, so that the first connecting rod 55 continues to drive the expanding needle 41 and the driving rod 33 to move in opposite directions. The driving rod 33 drives the sliding cylinder 32 to move linearly, thereby driving the second connecting rod 35 to move linearly along the second sliding groove 312 through the sliding cylinder 32. Then, the second connecting rod 35 drives the second push plate 34 to move in the clamping groove 311, so that the second push plate 34 pushes the lithium battery core from the clamping groove 311 to the arc groove 21.

[0064] Furthermore, in this embodiment, a displacement plate 351 is provided at one end of the second connecting rod 35 extending out of the clamping groove 311. The displacement plate 351 is fixedly connected to the sliding cylinder 32, so that when the driving rod 33 drives the sliding cylinder 32 to move linearly, the sliding cylinder 32 drives the displacement plate 351 and the second connecting rod 35 to move linearly.

[0065] A guide rod 313 is provided on the clamping cylinder 31 along the axial direction. When the sliding cylinder 32 drives the displacement plate 351 and the second connecting rod 35 to move linearly, the guide rod 313 guides the displacement plate 351, thereby making the linear movement of the displacement plate 351 and the second connecting rod 35 more stable, and thus making the action of the second push plate 34 to push the lithium battery core from the clamping groove 311 to the arc groove 21 more stable.

[0066] Specifically, in actual implementation, through holes can be provided at both ends of the displacement plate 351, and two guide rods 313 can be respectively provided at both ends of the displacement plate 351. Thus, the two guide rods 313 pass through the through holes at both ends of the displacement plate 351, so that the displacement plate 351 and the two guide rods 313 are slidably connected. Then, when the displacement plate 351 moves linearly, the guide rods 313 guide the displacement plate 351.

[0067] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lithium battery core enlarging device, characterized in that: The device includes a base plate (1), a placement block (2) disposed on the base plate (1), a core-blocking mechanism (3) disposed on the base plate (1), and a pusher mechanism (4) disposed on the base plate (1). The placement block (2) is used to place the core, the core-blocking mechanism (3) and the pusher mechanism (4) are respectively disposed on opposite sides of the placement block (2), the pusher mechanism (4) is used to push the core on the placement block (2) to the core-blocking mechanism (3) and to enlarge the core that is confined in the core-blocking mechanism (3), the core-blocking mechanism (3) is also used to push the enlarged core to the placement block (2).

2. The lithium battery core enlarging device as described in claim 1, characterized in that: The hole-expanding device further includes a driving mechanism (5), which drives the core-stopping mechanism (3) and the pusher mechanism (4) to move. The pusher mechanism (4) moves to push the core on the placement block (2) to the core-stopping mechanism (3) and to expand the hole of the core that is confined in the core-stopping mechanism (3). The core-stopping mechanism (3) moves to push the expanded core to the placement block (2).

3. The lithium battery core enlarging device as described in claim 2, characterized in that: The drive mechanism (5) includes a support frame (51) on the base plate (1), a screw (52) arranged horizontally on the support frame (51), a drive motor (53) on the support frame (51), a threaded sleeve (54) sleeved on the screw (52), and a first connecting rod (55) on the threaded sleeve (54). The drive motor (53) is used to drive the screw (52) to rotate. The threaded sleeve (54) is slidably connected to the support frame (51). The first connecting rod (55) is connected to the core-blocking mechanism (3) and the push-pin mechanism (4).

4. The lithium battery core enlarging device as described in claim 2, characterized in that: The pusher mechanism (4) includes a reaming needle (41) disposed on the first side of the placement block (2), a first push plate (42) disposed on the reaming needle (41), and a push rod (43) connecting the first push plate (42) and the drive mechanism (5). The push rod (43) drives the reaming needle (41) to move. The reaming needle (41) is used to push the core on the placement block (2) to the core blocking mechanism (3) and to ream the core that is limited in the core blocking mechanism (3). The first push plate (42) abuts against the core.

5. The lithium battery core enlarging device as described in claim 4, characterized in that: The pusher mechanism (4) further includes a limiting cylinder (44) provided on the base plate (1). The limiting cylinder (44) is provided with a limiting groove (441). One end of the push rod (43) extends into the limiting groove (441) and the other end extends out of the limiting groove (441). The limiting cylinder (44) is provided with a first sliding groove (442) along the axial direction. The first sliding groove (442) connects the limiting groove (441) to the outside. One end of the drive mechanism (5) passes through the first sliding groove (442) and extends into the limiting groove (441). One end of the push rod (43) extending into the limiting groove (441) is fixedly connected to the drive mechanism (5), and the other end extending out of the limiting groove (441) is fixedly connected to the first push plate (42).

6. The lithium battery core enlarging device as described in claim 2, characterized in that: The core-blocking mechanism (3) includes a clamping cylinder (31) disposed on the second side of the placement block (2), a core-pushing assembly extending into the clamping cylinder (31), and a driving connector connecting the core-pushing assembly and the driving mechanism (5). The clamping cylinder (31) is used to limit the core circumferentially. The core-pushing assembly abuts against the end of the core. The driving connector is used to drive the core-pushing assembly to move.

7. A lithium battery core enlarging device as described in claim 6, characterized in that: The placement block (2) is provided with an arc groove (21), which is adapted to the outer contour of the core and is used to limit the core. The clamping cylinder (31) is provided with a clamping groove (311) for limiting the core in the circumferential direction. The clamping groove (311) is connected to the arc groove (21).

8. A lithium battery core enlarging device as described in claim 6, characterized in that: The drive connector includes a sliding cylinder (32) fixedly connected to the pusher assembly, and a drive rod (33) connecting the sliding cylinder (32) and the drive mechanism (5). The sliding cylinder (32) has a cavity (321). One end of the drive rod (33) extends into the cavity (321). The end of the drive rod (33) extending into the cavity (321) is provided with a limiting plate (331). The limiting plate (331) is slidably connected to the inner wall of the cavity (321).

9. A lithium battery core enlarging device as described in claim 7, characterized in that: The pusher assembly includes a second push plate (34) disposed in the clamping cylinder (31) and a second connecting rod (35) with one end extending into the clamping cylinder (31) and the other end extending out of the clamping cylinder (31). The end of the second connecting rod (35) extending into the clamping cylinder (31) is fixedly connected to the second push plate (34), and the end extending out of the clamping cylinder (31) is fixedly connected to the drive connector. A second sliding groove (312) is provided on the clamping cylinder (31) along the axial direction. The second sliding groove (312) communicates the clamping groove (311) with the outside. The middle part of the second connecting rod (35) slides in cooperation with the second sliding groove (312).

10. A lithium battery core enlarging device as described in claim 9, characterized in that: A guide rod (313) is provided on the clamping cylinder (31) along the axial direction. A displacement plate (351) is provided at one end of the second connecting rod (35) extending out of the clamping cylinder (31). The guide rod (313) is used to guide the displacement plate (351). The displacement plate (351) is fixedly connected to the driving connector.

Images