A battery core extraction device

Abstract

The application belongs to the technical field of battery recycling equipment, and particularly relates to a battery core pulling device. By arranging a clamping mechanism and a core pulling mechanism, the battery is fixed and the battery core is clamped. Compared with the prior art, the core pulling device avoids directly pulling the tab to pull out the battery core from the shell, improves the success rate of battery core pulling, and the battery recycling equipment applying the core pulling device does not need to cut the tab after pulling out the battery core. On the contrary, the tab can be directly taken out before the battery core is pulled out, which improves the tab cutting efficiency and avoids the tab hindering the battery core pulling.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery recycling equipment, and particularly relates to a battery core pulling device. BACKGROUND

[0002] With the popularity of new energy vehicles, the number of waste batteries has increased rapidly in recent years. These batteries contain rich recyclable resources such as lithium, cobalt and nickel. If not properly treated, they will cause serious pollution to the environment. The existing recycling technology generally first disassembles and crushes the battery shell, and then separates the battery core, so as to efficiently extract high-value materials in waste batteries and re-enter the battery production line to realize resource recycling. However, the existing method of separating the battery core is generally to cut open both sides of the shell, then to cut around the end of the shell close to the tab, to pull out the part of the battery core connected to the end of the shell, and then to separate the tab and the battery core. Since this way of taking out the battery core is easy to break the tab during operation, which leads to the failure of core pulling, it is necessary to develop a core pulling device for separately separating the battery core from the shell after cutting off the battery core and the tab. SUMMARY

[0003] The purpose of the present application is to overcome the deficiency that the existing core pulling process is easy to cause the tab to be broken, and to provide a core pulling device for separately separating the battery core from the shell after cutting off the battery core and the tab, thereby improving the success rate of battery core separation.

[0004] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A battery core pulling device, one end of the battery has an opening, and a battery core is arranged inside, comprising a core pulling conveying line, a clamping mechanism and a core pulling mechanism, the core pulling conveying line comprises an adjusting table and a second transfer mechanism, the second transfer mechanism is provided with a second gripper which can be opened and closed along the Y-axis direction, the adjusting table can be lifted along the Z-axis direction, the clamping mechanism and the core pulling mechanism are arranged on opposite sides of the adjusting table in the Y-axis direction, the clamping mechanism can be controlled to move along the Y-axis direction, and is provided with a first gripper and a second gripper which are vertically staggered in the opening and closing direction, the first gripper opens and closes along the X-axis direction, and the second gripper opens and closes along the Z-axis direction, the core pulling mechanism is provided with a third gripper which can move along the Y-axis direction, and the third gripper can open and close along the Z-axis direction.

[0006] The second gripper is used to grab the battery from the Y-axis direction and transfer to the adjusting table, the adjusting table compensates the distance h according to the size of the battery in the Z-axis direction, so that the center of the battery in the Z-axis direction is aligned with the clamping reference of the third gripper, the clamping mechanism approaches the battery along the Y-axis, and the second gripper and the first gripper are controlled in turn to clamp the open end of the battery from the Z-axis and the X-axis directions respectively, the third gripper is reversely moved along the Y-axis direction.

[0007] The core pulling device realizes the fixation of the battery and the clamping of the core by setting the clamping mechanism and the core pulling mechanism. Specifically, before pulling out the core of a certain specification battery, the height of the battery can be determined, so that the adjusting seat compensates the distance h by rising or falling before pulling out the core each time, so as to adjust the battery to correspond to the clamping reference of the third gripper. Since the position of the battery in the Z-axis direction has been determined at this time, the second gripper is controlled to clamp the open end of the battery from the Z-axis direction, so as to fix the coordinates of the battery in the Z-axis direction, and then the first gripper is controlled to further fix the position of the battery from the X-axis direction, so as to limit the freedom degree of the battery from four directions, so that the open side of the battery is aligned with the clamping reference of the third gripper, and the accuracy of the core clamping is ensured. Compared with the prior art, the core pulling device of the application avoids directly pulling out the core from the shell by pulling the tab, improves the success rate of core pulling, and the battery recycling equipment applying the core pulling device also does not need to cut the tab after pulling out the core. On the one hand, the efficiency of tab cutting is improved, and on the other hand, the tab can be directly taken out before pulling out the core, which avoids the interference of the tab with the core pulling.

[0008] Further, the first gripper comprises an upper rack and a lower rack extending along the X-axis direction, a first clamping claw fixedly connected with the upper rack, a second clamping claw fixedly connected with the lower rack, an opening and closing gear meshed between the upper rack and the lower rack, and an opening and closing motor driving the opening and closing gear to rotate. The second gripper comprises a fixed support arranged between the first clamping claw and the second clamping claw, and a finger air cylinder arranged on the fixed support. The finger air cylinder has an output end that can open and close along the Z-axis direction, and each output end is connected with a clamping block. The arrangement mode of the first gripper and the second gripper is compact, and the first gripper acts quickly and accurately by the opening and closing mode of the rack.

[0009] Further, the core pulling mechanism comprises a transverse moving mechanism, a rotating mechanism and a longitudinal moving mechanism, the transverse moving mechanism comprises a transverse moving motor, a transverse moving screw rod driven to rotate by the transverse moving motor, and a transverse moving nut seat in threaded connection with the transverse moving screw rod, the rotating mechanism comprises core pulling supports connected to opposite sides of the transverse moving nut seat and longitudinally extending, a core pulling rotating shaft rotatably connected between the two core pulling supports, and a rotating motor driving the core pulling rotating shaft to rotate through a transmission assembly, the third gripper is arranged on the core pulling rotating shaft and can be driven to rotate by the core pulling rotating shaft, so as to transfer the gripped battery cell.

[0010] Further, the core pulling rotating shaft is connected with oppositely spaced mounting side plates, the longitudinal moving mechanism comprises a moving motor fixed between the two mounting side plates, core pulling sliding rails arranged outside the two mounting side plates, an upper fixed frame and a lower fixed frame slidably connected to the two core pulling sliding rails, a first rack connected to the inner side of the upper fixed frame, a second rack arranged on the opposite side of the first rack and connected to the lower fixed frame, and a driving gear driven to rotate by the moving motor and engaged between the first rack and the second rack, the third gripper comprises an upper gripping assembly fixedly connected to the upper fixed frame and a lower gripping assembly fixedly connected to the lower fixed frame. The third gripper is arranged in the above manner, the opening and closing action is rapid, the upper and lower gripping assemblies move accurately, the transmission of the gear and the rack has a good self-locking effect, and the battery cell is gripped more stably.

[0011] Further, the upper gripping assembly and the lower gripping assembly each comprise a mounting seat, an adjusting groove laterally penetrating through the mounting seat, a first adjusting screw and a second adjusting screw arranged on opposite sides in the adjusting groove, and the adjusting groove is open at the side, the upper gripping assembly further comprises two first outer clamping jaws in threaded connection with the first adjusting screw and the second adjusting screw respectively, and a first inner clamping jaw clamped in the adjusting groove between the two first outer clamping jaws, and the lower gripping assembly further comprises two second outer clamping jaws in threaded connection with the first adjusting screw and the second adjusting screw respectively, and a second inner clamping jaw clamped in the adjusting groove between the two second outer clamping jaws, compared with the structure of being integrated, the upper and lower gripping assemblies are respectively composed of two outer clamping jaws and an inner clamping jaw, each clamping jaw can be individually deformed and finely adjusted according to the corresponding part of the battery cell, so that the battery cell is gripped more flexibly and is less likely to be jammed.

[0012] Furthermore, the first outer claw, the first inner claw, the second outer claw, and the second inner claw all include a connecting portion arranged in the adjusting groove, and the connecting portion is provided with limiting ridges arranged relatively on both sides of the screw rod, and the side openings of the adjusting groove are fixedly connected to a pressure strip that presses against the limiting ridges on the opposite sides, and the pressure strip is provided with a plurality of pressure holes along the extension direction of the adjusting groove, and the plurality of pressure holes can be selectively equipped with bolts for pressing against the corresponding limiting ridges, and the first outer claw and the second outer claw are threadedly connected with a limiting nut that presses against the pressure strip. The above arrangement facilitates clamping of battery cells of different specifications.

[0013] Furthermore, the first outer claw and the second outer claw are provided with a first wedge-shaped gripping portion that is mirrored, and the first inner claw and the second inner claw are provided with a second wedge-shaped gripping portion that is mirrored, and the wedge-shaped surfaces of the first wedge-shaped gripping portion and the second wedge-shaped gripping portion face outward, and the wedge-shaped gripping portion can effectively open the outer shell and smoothly insert it into the battery.

[0014] Furthermore, the adjustment platform is provided with a notch on the side close to the core-pulling mechanism, and the adjustment platform is equipped with a lower positioning platform that can be raised and lowered to pass through the notch. A liftable upper positioning seat is provided above the adjustment platform, and the upper positioning seat and the lower positioning platform are close to each other to clamp the battery on the side close to the core-pulling mechanism. The above-mentioned arrangement cooperates with the clamping mechanism to fix the battery from the front and rear ends when extracting the battery cell, thereby preventing the battery from shaking and shifting, resulting in failure of core pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the core pulling device;

[0016] Figure 2 This is a structural diagram of the clamping mechanism, pressing mechanism, shell recovery conveyor line, and pusher claws;

[0017] Figure 3 and Figure 4 It is a structural diagram of the clamping mechanism;

[0018] Figure 5 and Figure 6 It is a three-dimensional diagram of the core pulling mechanism;

[0019] Figure 7 It is a structural diagram of the longitudinal movement mechanism;

[0020] Figure 8 It is a structural diagram of the upper clamping assembly and the mounting base;

[0021] Figure 9 This is a structural diagram of the adjustment platform. DETAILED DESCRIPTION

[0022] The specific embodiments of the present application are described below with reference to the accompanying drawings.

[0023] Referring to Figures 1 to 3 The embodiment provides a battery core pulling device, which comprises a core pulling conveying line e1, a clamping mechanism e4 and a core pulling mechanism e5. The core pulling conveying line e1 comprises an adjusting table e2 and a second transfer mechanism e3. The second transfer mechanism e3 is provided with a second gripper e31 which can be opened and closed along the Y-axis direction. The adjusting table e2 can be lifted along the Z-axis direction. The clamping mechanism e4 and the core pulling mechanism e5 are arranged on opposite sides of the adjusting table e2 along the Y-axis direction. The clamping mechanism e4 can be controlled to move along the Y-axis direction and is provided with a first gripper e41 and a second gripper e42 which are arranged in a vertical staggered manner along the opening and closing direction. The first gripper e41 is opened and closed along the X-axis direction, and the second gripper e42 is opened and closed along the Z-axis direction. The core pulling mechanism e5 is provided with a third gripper e6 which can be moved along the Y-axis direction and can be opened and closed along the Z-axis direction.

[0024] The second gripper e31 is used for clamping a battery 100 from the Y-axis direction and transferring the battery 100 to the adjusting table e2. The adjusting table e2 is lifted or lowered to compensate for a distance h according to the size of the battery 100 in the Z-axis direction, so that the center of the battery 100 in the Z-axis direction is aligned with the clamping reference of the third gripper e6. The clamping mechanism e4 is moved to the battery 100 along the Y-axis, and the second gripper e42 and the first gripper e41 are controlled in sequence to clamp one end of the battery 100 which is opposite to the opening of the battery 100 from the Z-axis and the X-axis directions, respectively. The third gripper e6 can be controlled to move to the battery 100 along the Y-axis and extend into the opening of the battery 100 in a stretched state to clamp the battery core 104 and then move reversely along the Y-axis direction.

[0025] Its working principle is that the staff enters the size data of the battery to be cored into the core pulling device in advance, including the length, width and height data of the battery. The second transfer mechanism e3 controls the second gripper e31 to grab the battery 100 and transfer it to the adjustment platform e2. The initial coordinate of the adjustment platform e2 on the Z axis is set to 0. The compensation distance h is calculated according to the height dimension of the battery and the clamping reference of the third gripper, and the corresponding rising or falling compensation distance h is calculated. For example, the Z axis coordinate of the above-mentioned clamping reference is 20 cm, and the height dimension of the battery is 10 cm. In order to ensure that the center of the battery in the Z axis direction is aligned with the clamping reference, the adjustment platform e2 needs to rise by a compensation distance of 15 cm. Then the clamping mechanism e4 approaches the battery 100 along the Y-axis, first controls the second clamp e42 to clamp the end of the battery 100 relative to its opening from the Z-axis direction, thereby fixing the current height position of the battery 100, and then controls the first clamp e41 to clamp both sides of the battery 100 from the X-axis direction, thereby further fixing the current position of the battery 100, and then the third clamp e6 opens and inserts into the opening of the battery 100. As the third clamp e6 continues to move forward, the battery 100 shell 101 will be stretched open along the Z-axis direction by the opened third clamp e6, and then the third clamp e6 closes to clamp the battery cell 104. After clamping the battery cell 104, the third clamp e6 moves in the opposite direction along the Y-axis direction to pull the battery cell 104 out of the shell 101.

[0026] See also Figure 1 、 Figure 3 and Figure 4 The first gripper e41 includes an upper rack e411 and a lower rack e412 extending along the X-axis, a first clamping claw e413 fixedly connected to the upper rack, a second clamping claw e414 fixedly connected to the lower rack, an opening and closing gear e415 meshed between the upper rack e411 and the lower rack e412, and an opening and closing motor e416 driving the opening and closing gear e415 to rotate. The second gripper e42 includes a fixed bracket e421 arranged between the first clamping claw e413 and the second clamping claw e414, and a finger cylinder e422 arranged on the fixed bracket e421. The finger cylinder e422 has an output end that can be opened and closed along the Z-axis direction, and each output end is connected to a clamping block e423.

[0027] See also Figure 5 and Figure 6The core pulling mechanism e5 includes a transverse moving mechanism e51, a rotating mechanism e52 and a longitudinal moving mechanism e53. The transverse moving mechanism e51 includes a transverse moving motor e511, a transverse moving screw rod e512 driven to rotate by the transverse moving motor e511, and a transverse moving nut seat e513 threadedly connected with the transverse moving screw rod e512. The rotating mechanism e52 includes core pulling supports e521 connected on opposite sides of the transverse moving nut seat e513 and extending longitudinally, a core pulling rotating shaft e522 rotatably connected between the core pulling supports e521, and a rotating motor e523 driving the core pulling rotating shaft e522 to rotate through a transmission assembly.

[0028] Referring to Figure 5 and Figure 7 The core pulling rotating shaft e522 is connected with oppositely spaced mounting side plates e524. The longitudinal moving mechanism e53 includes a moving motor e531 fixed between the mounting side plates e524, core pulling slide rails e532 arranged outside the mounting side plates e524, an upper fixed frame e533 and a lower fixed frame e534 slidably connected on the core pulling slide rails e532, a first rack e535 connected inside the upper fixed frame e533, a second rack e536 arranged on an opposite side of the first rack e535 and connected with the lower fixed frame e534, a driving gear e537 driven to rotate by the moving motor e531 and engaged between the first rack e535 and the second rack e536. The third gripper e6 includes an upper gripping assembly e61 fixedly connected with the upper fixed frame e533 and a lower gripping assembly e62 fixedly connected with the lower fixed frame e534. The moving motor e531 drives the driving gear e537 to rotate, thereby driving the first rack e535 and the second rack e536 to move in the same direction along the Z-axis, so as to open and close the third gripper e6.

[0029] Referring to Figure 7 and Figure 8The upper clamping assembly e61 and the lower clamping assembly e62 each comprise a mounting seat e63, an adjusting groove e64 transversely penetrating in the mounting seat e63, a first adjusting screw e651 and a second adjusting screw e652 arranged on opposite sides of the adjusting groove e64, and the adjusting groove e64 is open on the side, the upper clamping assembly e61 further comprises two first outer clamping jaws e611 threadedly connected with the first adjusting screw e651 and the second adjusting screw e652 respectively, and a first inner clamping jaw e612 clamped in the adjusting groove e64 between the two first outer clamping jaws e611, and the lower clamping assembly e62 further comprises two second outer clamping jaws e621 threadedly connected with the first adjusting screw e651 and the second adjusting screw e652 respectively, and a second inner clamping jaw e622 clamped in the adjusting groove e64 between the two second outer clamping jaws e621, and the distance of the first outer clamping jaw e611 or the second outer clamping jaw e621 can be adjusted by rotating the first adjusting screw e651 and the second adjusting screw e652, so as to adapt to different specifications of the battery 100.

[0030] Referring to Figure 8 The first outer clamping jaw e611, the first inner clamping jaw e612, the second outer clamping jaw e621 and the second inner clamping jaw e622 each comprise a connecting portion e601 arranged in the adjusting groove e64, the connecting portion e601 is provided with a limiting protrusion e600 arranged on opposite sides of the screw, the side of the adjusting groove e64 is fixedly connected with a pressing strip e66 abutting against the limiting protrusion e600 on the opposite side, the pressing strip e66 is provided with a plurality of pressing holes e661 in the extension direction of the adjusting groove e64, the plurality of pressing holes e661 are selectively assembled with a bolt for abutting against the corresponding limiting protrusion e600, and the first outer clamping jaw e611 and the second outer clamping jaw e621 are threadedly connected with a limiting nut e662 abutting against the pressing strip e66, and the bolt and the limiting nut e662 are arranged to facilitate fixing the first outer clamping jaw e611 and the second outer clamping jaw e621.

[0031] Referring to Figure 7 The first outer clamping jaw e611 and the second outer clamping jaw e621 are provided with a first wedge-shaped clamping portion e602 arranged in mirror image, the wedge-shaped surfaces of the first wedge-shaped clamping portion e602 and the second wedge-shaped clamping portion e603 face outward, and the first inner clamping jaw e612 and the second inner clamping jaw e622 are provided with a second wedge-shaped clamping portion e603 arranged in mirror image.

[0032] Referring to Figure 9The adjusting platform e2 is provided with a notch e21 on the side close to the core pulling mechanism e5, and the adjusting platform e2 is provided with a lower positioning platform e22 which can be lifted and penetrates the notch e21, and the upper side of the adjusting platform e2 is provided with a liftable upper positioning seat e23, and the upper positioning seat e23 and the lower positioning platform e22 are close to each other to clamp the battery 100 on the side close to the core pulling mechanism e5, so as to prevent the battery 100 from shaking and moving during the core pulling process, and improve the success rate of core pulling.

[0033] Referring to Figure 2 As an improved scheme, the application further comprises a recycling device f, which comprises a shell recycling conveying line f1 extending below the clamping mechanism e4 along the conveying direction of the core pulling conveying line e1, a pressing mechanism f2 arranged at the end of the shell recycling conveying line f1, a paw f3 which can reciprocally linearly move to the pressing mechanism f2 relative to the shell recycling conveying line f1, the shell recycling conveying line f1 comprises a liftable receiving platform f4 and a conveying platform f5 connecting the receiving platform f4 and the pressing mechanism f2, the receiving platform f4 can be controlled to be lifted to the lower side of the clamping mechanism e4 for receiving the battery shell 101 and to be lowered, and the paw f3 is used to push the battery shell 101 from the conveying platform f5 to the pressing mechanism f2. The receiving platform f4 can be driven to lift and lower by the existing lifting cylinder.

[0034] Referring to Figure 1 and Figure 2 The pressing mechanism f2 comprises a pressing platform f21 connected with the conveying platform f5, a stamping head f22 which can be liftable arranged above the pressing platform f21, and a recycling container f23 connected with the pressing platform f21, when the shell 101 on the pressing platform f21 is flattened, another shell 101 pushed by the paw f3 will push the flattened shell 101 to the recycling container f23, so as to be recycled.

[0035] The core pulling device realizes the fixation of the battery 100 and the clamping of the core 104 by setting the clamping mechanism e4 and the core pulling mechanism e5, specifically, before pulling out a battery core of a certain specification, the height of the battery can be determined, therefore the adjusting seat e2 rises or falls to compensate the distance h before pulling out the core each time, so as to adjust the battery 100 to the clamping reference of the third clamping hand e6, since the position of the battery 100 in the Z-axis direction has been determined at this time, the second clamping hand e42 is controlled to clamp the one end of the battery 100 opening relative to it from the Z-axis direction, so as to fix the coordinate of the battery in the Z-axis direction, then the first clamping hand e41 is controlled to further fix the position of the battery 100 from the X-axis direction, the freedom of the battery 100 is limited from four directions, so that the side of the battery 100 opening is aligned with the clamping reference of the third clamping hand e6, and the accuracy of the core 104 clamping is ensured. Compared with the prior art, the core pulling device of the application avoids pulling out the core from the shell directly by pulling the tab, improves the success rate of core pulling, and the battery recycling equipment applying the core pulling device also does not need to cut the tab after pulling out the core, on the contrary, the tab can be directly taken out before pulling out the core, on the one hand, the efficiency of tab cutting is improved, on the other hand, the tab can be avoided to hinder the pulling out of the core.

[0036] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A battery core extraction device, wherein one end of the battery (100) has an opening, and a battery core (104) is installed inside the opening, characterized in that: It comprises a core-pulling conveyor line (e1), a clamping mechanism (e4) and a core-pulling mechanism (e5), wherein the core-pulling conveyor line (e1) comprises an adjusting table (e2) and a second transfer mechanism (e3), the second transfer mechanism (e3) is provided with a second gripper (e31) which can be opened and closed along the Y-axis direction, the adjusting table (e2) can be raised and lowered along the Z-axis direction, the clamping mechanism (e4) and the core-pulling mechanism (e5) are arranged on opposite sides of the adjusting table (e2) in the Y-axis direction, the clamping mechanism (e4) can be controlled to move in the Y-axis direction, and is provided with a first gripper (e41) and a second gripper (e42) which are arranged vertically staggered in the opening and closing direction, the first gripper (e41) opens and closes along the X-axis direction, the second gripper (e42) opens and closes along the Z-axis direction, the core-pulling mechanism (e5) is provided with a third gripper (e6) which can be moved in the Y-axis direction, and the third gripper (e6) can be opened and closed in the Z-axis direction; The second gripper (e31) is used to grip the battery (100) in the Y-axis direction and transfer it to the adjustment platform (e2). The adjustment platform (e2) rises or falls by a compensation distance h according to the size of the battery (100) in the Z-axis direction, so that the center of the battery (100) in the Z-axis direction is aligned with the gripping reference of the third gripper (e6). The gripping mechanism (e4) approaches the battery (100) along the Y-axis and sequentially controls the second gripper (e42) and the first gripper (e41) to clamp the end of the battery (100) relative to its opening in the Z-axis and X-axis directions respectively. The third gripper (e6) can be controlled to approach the battery (100) in the Y-axis direction, and extends into the opening of the battery (100) in an open state, then closes to clamp the battery cell (104), and then moves in the opposite direction along the Y-axis. The core pulling mechanism (e5) includes a transverse moving mechanism (e51), a rotating mechanism (e52), and a longitudinal moving mechanism (e53). The transverse moving mechanism (e51) includes a transverse moving motor (e511), a transverse moving screw (e512) driven to rotate by the transverse moving motor (e511), and a transverse moving nut seat (e513) threadedly connected to the transverse moving screw (e512). The rotating mechanism (e52) includes a core pulling bracket (e521) connected to opposite sides of the transverse moving nut seat (e513) and extending longitudinally, a core pulling shaft (e522) rotatably connected between the core pulling brackets (e521) on both sides, and a rotating motor (e523) that drives the core pulling shaft (e522) to rotate through a transmission assembly. The third clamp (e6) is mounted on the core pulling shaft (e522).

2. The core pulling device according to claim 1, characterized in that: The first gripper (e41) includes an upper rack (e411) and a lower rack (e412) extending along the X-axis direction, a first clamping claw (e413) fixedly connected to the upper rack, a second clamping claw (e414) fixedly connected to the lower rack (e412), an opening and closing gear (e415) meshed between the upper rack (e411) and the lower rack (e412), and an opening and closing motor (e416) driving the opening and closing gear (e415) to rotate; the second gripper (e42) includes a fixed bracket (e421) arranged between the first clamping claw (e413) and the second clamping claw (e414), and a finger cylinder (e422) arranged on the fixed bracket (e421); the finger cylinder (e422) has an output end that can be opened and closed along the Z-axis direction, and each output end is connected to a clamping block (e423).

3. The core pulling device according to claim 1, characterized in that: The core-pulling shaft (e522) is connected to the mounting side plates (e524) arranged at a relatively interval, and the longitudinal moving mechanism (e53) includes a moving motor (e531) fixed between the mounting side plates (e524) on both sides, a core-pulling slide rail (e532) arranged on the outside of the mounting side plates (e524) on both sides, an upper fixed frame (e533) and a lower fixed frame (e534) slidably connected to the core-pulling slide rails (e532) on both sides, a first rack (e535) connected to the inner side of the upper fixed frame (e533), a cloth A second rack (e536) is arranged on the opposite side of the first rack (e535) and connected to the lower fixed frame (e534); a driving gear (e537) is driven to rotate by the moving motor (e531) and is engaged between the first rack (e535) and the second rack (e536); the third gripper (e6) includes an upper clamping assembly (e61) fixedly connected to the upper fixed frame (e533), and a lower clamping assembly (e62) fixedly connected to the lower fixed frame (e534).

4. The core pulling device according to claim 3, characterized in that: The upper clamping assembly (e61) and the lower clamping assembly (e62) both include a mounting seat (e63), an adjustment slot (e64) extending transversely through the mounting seat (e63), a first adjustment screw (e651) and a second adjustment screw (e652) disposed on opposite sides of the adjustment slot (e64), the adjustment slot (e64) being open at the side, and the upper clamping assembly (e61) further including screw threads connected to the first adjustment screw (e651) and the second adjustment screw (e652). Two first external claws (e611) are connected, and a first internal claw (e612) is clamped in the adjustment groove (e64) and located between the two first external claws (e611). The lower clamping assembly (e62) also includes two second external claws (e621) threadedly connected to the first adjustment screw (e651) and the second adjustment screw (e652), and a second internal claw (e622) is clamped in the adjustment groove (e64) and located between the two second external claws (e621).

5. The core pulling device according to claim 4, characterized in that: The first outer claw (e611), the first inner claw (e612), the second outer claw (e621), and the second inner claw (e622) all include a connecting portion (e601) arranged in the adjusting groove (e64), the connecting portion (e601) is provided with limiting ridges (e600) arranged relatively on both sides of the screw, and a pressure strip (e66) is fixedly connected to the side opening of the adjusting groove (e64) and is pressed against the limiting ridges (e600) on the opposite sides. The pressure strip (e66) is provided with a plurality of pressure holes (e661) along the extension direction of the adjusting groove (e64), and the pressure holes (e661) are equipped with bolts for pressing against the corresponding limiting ridges (e600). The first outer claw (e611) and the second outer claw (e621) are threadedly connected with a limiting nut (e662) abutting against the pressure strip (e66).

6. The core pulling device according to claim 5, characterized in that: The first outer claw (e611) and the second outer claw (e621) are provided with a first wedge-shaped gripping portion (e602) in a mirror-image arrangement, and the first inner claw (e612) and the second inner claw (e622) are provided with a second wedge-shaped gripping portion (e603) in a mirror-image arrangement, wherein the wedge-shaped surfaces of the first wedge-shaped gripping portion (e602) and the second wedge-shaped gripping portion (e603) face outwards.

7. The core pulling device according to claim 1, characterized in that: The adjustment platform (e2) is provided with a notch (e21) on a side close to the core-pulling mechanism (e5), and the adjustment platform (e2) is provided with a lower positioning platform (e22) that can be raised and lowered to pass through the notch (e21). An upper positioning seat (e23) that can be raised and lowered is provided above the adjustment platform (e2), and the upper positioning seat (e23) and the lower positioning platform (e22) are close to each other to clamp the battery (100) on the side close to the core-pulling mechanism (e5).

8. The core pulling device according to claim 1, characterized in that: The invention also includes a shell recovery conveyor line (f1) arranged below the clamping mechanism (e4) and extending along the conveying direction of the core pulling conveyor line (e1), a pressing mechanism (f2) arranged at the end of the shell recovery conveyor line (f1), and a claw (f3) that can move linearly back and forth relative to the shell recovery conveyor line (f1) toward the pressing mechanism (f2). The shell recovery conveyor line (f1) includes a lifting receiving platform (f4) and a conveying platform (f5) connecting the receiving platform (f4) and the pressing mechanism (f2). The receiving platform (f4) can be controlled to rise to the lower side of the clamping mechanism (e4) for receiving the battery shell (101) and then descend. The claw (f3) is used to push the battery shell (101) from the conveying platform (f5) to the pressing mechanism (f2).

9. The core pulling device according to claim 8, characterized in that: The pressing mechanism (f2) includes a pressing table (f21) connected to the conveying table (f5), a punching head (f22) arranged to be liftable above the pressing table (f21), and a recovery container (f23) connected to the pressing table (f21).

Images