Blade battery cell variable-pitch grabbing mechanism

Abstract

The invention relates to a blade cell variable-pitch grabbing mechanism which comprises a supporting frame and two symmetrically-arranged variable-pitch clamping jaw units, and the supporting frame is used for being connected with a mechanical arm; the variable-pitch clamping jaw unit comprises a power source, a first connecting plate, a first-stage variable-pitch clamping jaw assembly, a second-stage variable-pitch clamping jaw assembly, a third-stage variable-pitch clamping jaw assembly and a fourth-stage variable-pitch clamping jaw assembly. According to the blade battery cell variable-pitch grabbing mechanism, when the telescopic rod of the driving source stretches out or retracts back, the first-stage variable-pitch clamping jaw assembly, the second-stage variable-pitch clamping jaw assembly, the third-stage variable-pitch clamping jaw assembly and the fourth-stage variable-pitch clamping jaw assembly can be driven to be unfolded step by step, so that the distance between battery cell clamping jaws is the same as the distance between products on a plastic tray; after the battery cell clamping jaw descends in place, the battery cell clamping jaw clamps the battery cell, so that the battery cell is grabbed; the variable-pitch grabbing mechanism is simple in structure, only two air cylinders are used for driving the variable-pitch grabbing mechanism, the pitch of eight independent battery cells is changed at the same time, the equipment cost is saved, and the production efficiency and the production cost are improved.

Description

Technical Field

[0001] The invention relates to the technical field of manipulators, and in particular to a variable-distance grabbing mechanism for a blade battery cell. Background Art

[0002] The battery module is mainly composed of many workpieces such as battery cells, end plates, side plates, insulation covers, thermal insulation pads, wiring harness isolation plates, etc., and the battery cells are the most important components in the battery module.

[0003] In the battery manufacturing process, it is necessary to grab the battery cells from the loading position and place them at the unloading position, such as grabbing the battery cells from the assembly line and placing them on the rack for storage. In the prior art, a grabbing device is generally used to grab the battery cells, but for flat battery cells, the following problems may occur: 1. The various sizes of battery cells make it difficult for automatic assembly lines to automatically clamp and load battery cells of various sizes. The existing automatic loading equipment is only for loading battery cells of specific models and sizes. A large number of workpieces need to be replaced when the product is changed, which makes it difficult to meet the loading needs of various battery cells.

[0004] 2. The existing structure of the grabbing device is complex in design, difficult to assemble and debug, the clamp is generally heavy, and the cost is high. In addition, the battery cell may fall during the process of clamping the battery cell, causing damage to the battery cell or personal safety accidents. Summary of the invention

[0005] To this end, the technical problem to be solved by the present invention is to overcome the problem that the battery cell grasping device in the prior art has low compatibility and can only grasp blade batteries with specified spacing and thickness, and is not compatible with batteries of any specifications and sizes.

[0006] In order to solve the above technical problems, the present invention provides a blade battery core variable pitch gripping mechanism, comprising: a support frame and two symmetrically arranged variable pitch clamping jaw units, the two symmetrically arranged variable pitch clamping jaw units are relatively staggered on the support frame, and the support frame is used to connect with the mechanical arm; the variable pitch clamping jaw unit comprises a power source, a connecting plate 1, a primary variable pitch clamping jaw assembly, a secondary variable pitch clamping jaw assembly, a tertiary variable pitch clamping jaw assembly and a quaternary variable pitch clamping jaw assembly, the power source is fixedly arranged on the support frame, and the power source is connected to the primary variable pitch clamping jaw assembly through the connecting plate 1, and the primary variable pitch clamping jaw assembly The components, the secondary variable pitch jaw assembly, the tertiary variable pitch jaw assembly and the fourth variable pitch jaw assembly are all arranged on the supporting frame, the secondary variable pitch jaw assembly is connected to the tertiary variable pitch jaw assembly, the tertiary variable pitch jaw assembly is connected to the fourth variable pitch jaw assembly, the power source provides driving force to achieve the spacing adjustment between the primary variable pitch jaw assembly, the secondary variable pitch jaw assembly, the tertiary variable pitch jaw assembly and the fourth variable pitch jaw assembly, the primary variable pitch jaw assembly, the secondary variable pitch jaw assembly, the tertiary variable pitch jaw assembly and the fourth variable pitch jaw assembly are all connected with a battery cell jaw, and the battery cell jaw is used to grab the battery cell.

[0007] In one embodiment of the present invention, the first-stage variable pitch clamping jaw assembly includes a first variable pitch movable plate, a first push block and a first rectangular plate, the first variable pitch movable plate is slidably connected to a support frame, and at least one battery cell clamping jaw is connected to the first variable pitch movable plate, the first push block is fixedly arranged on the first variable pitch movable plate, one end of the first rectangular plate is connected to the second-stage variable pitch clamping jaw assembly, and the other end of the first rectangular plate is suspended above the first variable pitch movable plate, a first cam groove is provided inside the first rectangular plate, and the first push block is located in the first cam groove.

[0008] In one embodiment of the present invention, the secondary variable pitch clamping jaw assembly includes a second variable pitch movable plate, a second push block and a second rectangular plate, the second variable pitch movable plate is slidably connected to the support frame, and at least one battery cell clamping jaw is connected to the second variable pitch movable plate, the second push block is fixedly arranged on the second variable pitch movable plate, one end of the second rectangular plate is connected to the third-stage variable pitch clamping jaw assembly, and the other end of the second rectangular plate is suspended above the second variable pitch movable plate, the second rectangular plate is provided with a second cam groove, the second push block is located in the second cam groove, and the first rectangular plate and the second variable pitch movable plate are fixedly connected.

[0009] In one embodiment of the present invention, the three-stage variable pitch clamping jaw assembly includes a third variable pitch movable plate, a third push block and a third rectangular plate, the third variable pitch movable plate is slidably connected to the support frame, and the third variable pitch movable plate is connected to at least one battery cell clamping jaw, the third push block is fixedly arranged on the third variable pitch movable plate, one end of the third rectangular plate is fixedly connected to the four-stage variable pitch clamping jaw assembly, and the other end of the third rectangular plate is suspended above the third variable pitch movable plate, the third rectangular plate is provided with a third cam groove, the third push block is located in the third cam groove, and one end of the second rectangular plate is fixedly connected to the third variable pitch movable plate.

[0010] In one embodiment of the present invention, the four-stage variable pitch clamp assembly includes a fourth variable pitch movable plate, a fourth push block and a first U-shaped plate, the fourth variable pitch movable plate is slidably connected to the support frame, and at least one battery cell clamp is connected to the fourth variable pitch movable plate, the fourth push block is fixedly arranged on the fourth variable pitch movable plate, one end of the first U-shaped plate is connected to the support frame, and the other end of the first U-shaped plate is suspended above the fourth variable pitch movable plate, the first U-shaped plate is provided with a U-shaped groove, the fourth push block is located in the U-shaped groove, and one end of the third rectangular plate is fixedly connected to the fourth variable pitch movable plate.

[0011] In one embodiment of the present invention, two symmetrical and parallel linear guide rails are provided on the support frame, and two sliders are connected to the first variable-length movable plate, the second variable-length movable plate, the third variable-length movable plate and the fourth variable-length movable plate. The two sliders and the two symmetrical and parallel linear guide rails are arranged one by one, and the sliders are arranged on the linear guide rails, and the sliders can slide along the linear guide rails.

[0012] In one embodiment of the present invention, a middle connecting block is provided in the middle of the support frame, and both ends of the first U-shaped plate in the opening direction are fixedly connected to the middle connecting block.

[0013] In one embodiment of the present invention, the battery cell clamp includes an adapter block, a clamp cylinder and two symmetrically arranged clamping arms, the adapter block is fixedly connected to the support frame, the clamp cylinder is fixedly arranged on the adapter block, the two symmetrically arranged clamping arms are connected to the clamp cylinder, the clamp arms are connected with clamping fingers, and the clamp cylinder drives the clamping fingers to clamp the battery cell.

[0014] In one embodiment of the present invention, a pad is provided on the opposite end faces of the clamping jaw cylinder.

[0015] In one embodiment of the present invention, the power source is a pneumatic cylinder, an oil cylinder or an electric cylinder.

[0016] The above technical solution of the present invention has the following beneficial effects compared with the prior art: The blade battery cell variable-pitch grasping mechanism described in the present invention can drive the first-stage variable-pitch jaw assembly, the second-stage variable-pitch jaw assembly, the third-stage variable-pitch jaw assembly and the fourth-stage variable-pitch jaw assembly to expand step by step when the telescopic rod of the driving source is extended or retracted, thereby adjusting the spacing of the battery cell claws connected to the first-stage variable-pitch jaw assembly, the second-stage variable-pitch jaw assembly, the third-stage variable-pitch jaw assembly and the fourth-stage variable-pitch jaw assembly, so that the spacing of the battery cell claws is the same as the spacing of the products on the plastic pallet, so that after the battery cell claws are lowered into place, the battery cell claws clamp the battery cell to achieve battery cell grasping; the variable-pitch grasping mechanism of this invention has a simple structure, and only two cylinders are used to drive the variable-pitch mechanism, and 8 individual battery cells are variable in pitch at the same time, saving equipment cost, improving production efficiency and production cost, and having a stable structure, which is convenient for subsequent maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein Figure 1 It is a schematic diagram of the overall structure of the blade battery cell variable distance grasping mechanism in a preferred embodiment of the present invention; Figure 2 The structure of the variable-distance clamping jaw unit in the preferred embodiment of the present invention is shown in FIG. Figure 1 ; Figure 3 The structure of the variable-distance clamping jaw unit in the preferred embodiment of the present invention is shown in FIG. Figure 2 ; Figure 4 The structure of the variable-distance clamping jaw unit in the preferred embodiment of the present invention is shown in FIG. Figure 3 ; Figure 5 It is a partial enlarged view of the variable-distance clamping jaw unit in the preferred embodiment of the present invention; Figure 6 It is a schematic diagram of the structure of the battery cell clamp in a preferred embodiment of the present invention.

[0018] Description of the accompanying drawings: support frame 1, linear guide 11, slider 12, intermediate connecting block 13, T-plate 14, separating round rod 15, variable pitch clamping jaw unit 2, power source 21, connecting plate 1 22, primary variable pitch clamping jaw assembly 23, first variable pitch moving plate 231, first push block 232, first rectangular plate 233, first cam groove 234, first limiting bolt 235, first buffer 236, secondary variable pitch clamping jaw assembly 24, second variable pitch moving plate 241, second push block 242, second rectangular plate 243, second cam groove 244, second limiting bolt 245, second buffer 246, three-stage variable pitch clamping jaw assembly 25, third variable pitch moving plate 251, third push block 252, third rectangular plate 253, third cam groove 254, four-stage variable pitch clamping jaw assembly 26, fourth variable pitch moving plate 261, fourth push block 262, first U-shaped plate 263, U-shaped groove 264, fourth buffer 265, battery cell clamping jaw 27, adapter block 271, clamping jaw cylinder 272, clamping arm 273, clamping finger 274, pad 275, plastic tray 100, battery cell 200. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0020] Reference Figure 1 , 2 As shown, the blade battery core variable pitch grasping mechanism of the present invention comprises: a support frame 1 and two symmetrically arranged variable pitch clamping jaw units 2, the two symmetrically arranged variable pitch clamping jaw units 2 are relatively staggered on the support frame 1, and the support frame 1 is used to connect with the robot arm; the variable pitch clamping jaw unit 2 comprises a power source 21, a connecting plate 1 22, a primary variable pitch clamping jaw assembly 23, a secondary variable pitch clamping jaw assembly 24, a tertiary variable pitch clamping jaw assembly 25 and a quaternary variable pitch clamping jaw assembly 26, the power source 21 is fixedly arranged on the support frame 1, and the power source 21 is connected to the primary variable pitch clamping jaw assembly 23 through the connecting plate 1 22, the primary variable pitch clamping jaw assembly 23, the secondary variable pitch clamping jaw assembly 24, the tertiary variable pitch clamping jaw assembly 25 and the quaternary variable pitch clamping jaw assembly 26. The components 24, the three-stage variable pitch jaw assembly 25 and the four-stage variable pitch jaw assembly 26 are all arranged on the supporting frame 1, the two-stage variable pitch jaw assembly 24 is connected to the three-stage variable pitch jaw assembly 25, the three-stage variable pitch jaw assembly 25 is connected to the four-stage variable pitch jaw assembly 26, the power source 21 provides driving force to achieve the distance adjustment between the one-stage variable pitch jaw assembly 23, the two-stage variable pitch jaw assembly 24, the three-stage variable pitch jaw assembly 25 and the four-stage variable pitch jaw assembly 26, the one-stage variable pitch jaw assembly 23, the two-stage variable pitch jaw assembly 24, the three-stage variable pitch jaw assembly 25 and the four-stage variable pitch jaw assembly 26 are all connected with a battery cell clamp 27, and the battery cell clamp 27 is used to grab the battery cell.

[0021] Reference Figure 3-5 As shown, the primary variable pitch clamping jaw assembly 23 includes a first variable pitch moving plate 231, a first push block 232 and a first rectangular plate 233. The first variable pitch moving plate 231 is slidably connected to the support frame 1, and at least one battery core clamping jaw 27 is connected to the first variable pitch moving plate 231. The first push block 232 is fixedly arranged on the first variable pitch moving plate 231. One end of the first rectangular plate 233 is connected to the secondary variable pitch clamping jaw assembly 24, and the other end of the first rectangular plate 233 is suspended above the first variable pitch moving plate 231. A first cam groove 234 is arranged inside the first rectangular plate 233, and the first push block 232 is located in the first cam groove 234. When the first push block 232 moves to both ends of the first cam groove 234 in the length direction, the first push block 232 contacts the inner wall of the first cam groove 234 in the length direction, thereby driving the first rectangular plate 233 to move, thereby realizing the adjustment of the distance between the primary variable pitch clamping jaw assembly 23 and the secondary variable pitch clamping jaw assembly 24. The length direction of the first cam groove 234 is arranged along the extension direction of the piston rod of the power source 21. The first limiting bolt 235 and the first buffer 236 are arranged on two opposite side walls in the length direction of the first cam groove 234. The first buffer 236 is used for buffering after the first push block 232 moves into position. The first limiting bolt 235 is used for contacting the first push block 232 to prevent the first push block 232 from colliding with the inner wall of the first rectangular plate 233, which reduces the life of the first rectangular plate 233.

[0022] Reference Figure 3-5As shown, the secondary variable pitch clamping jaw assembly 24 includes a second variable pitch movable plate 241, a second push block 242 and a second rectangular plate 243, the second variable pitch movable plate 241 is slidably connected to the support frame 1, and the second variable pitch movable plate 241 is connected to at least one battery cell clamping jaw 27, the second push block 242 is fixedly arranged on the second variable pitch movable plate 241, one end of the second rectangular plate 243 is connected to the tertiary variable pitch clamping jaw assembly 25, and the other end of the second rectangular plate 243 is suspended above the second variable pitch movable plate 241, the second rectangular plate 243 is provided with a second cam groove 244, the second push block 242 is located in the second cam groove 244, and the first rectangular plate 233 and the second variable pitch movable plate 241 are fixedly connected. When the second push block 242 moves to the two ends of the second cam groove 244 in the length direction, it can drive the second rectangular plate 243 to move. Since the second rectangular plate 243 is connected to the three-stage variable pitch clamping jaw assembly 25, the distance between the two-stage variable pitch clamping jaw assembly 24 and the three-stage variable pitch clamping jaw assembly 25 can be adjusted. The length direction of the second cam groove 244 is arranged along the extension direction of the piston rod of the power source 21. The two opposite side walls in the length direction of the second cam groove 244 are provided with a second limiting bolt 245 and a second buffer 246. The function of the second limiting bolt 245 is the same as that of the first limiting bolt 235, and the function of the second buffer 246 is the same as that of the first buffer 236, except that the second limiting bolt 245 and the second buffer 246 interact with the second push block 242.

[0023] Reference Figure 3-5 As shown, the three-stage variable pitch clamping jaw assembly 25 includes a third variable pitch moving plate 251, a third push block 252 and a third rectangular plate 253. The third variable pitch moving plate 251 is slidably connected to the support frame 1, and at least one battery core clamping jaw 27 is connected to the third variable pitch moving plate 251. The third push block 252 is fixedly arranged on the third variable pitch moving plate 251. One end of the third rectangular plate 253 is fixedly connected to the four-stage variable pitch clamping jaw assembly 26, and the other end of the third rectangular plate 253 is suspended above the third variable pitch moving plate 251. The third rectangular plate 253 is provided with a third cam groove 254, and the third push block 252 is located in the third cam groove 254. One end of the second rectangular plate 243 is fixedly connected to the third variable pitch moving plate 251. The length direction of the third cam groove 254 is arranged along the extension direction of the piston rod of the power source 21. When the third push block 252 moves to both ends of the third cam groove 254 in the length direction, since the third push block 252 contacts the inner wall of the third cam groove 254, the third push block 252 drives the third rectangular plate 253 to move, that is, drives the four-stage variable-pitch clamping jaw assembly 26 to move.

[0024] Reference Figure 3-5As shown, the four-stage variable pitch clamp assembly 26 includes a fourth variable pitch movable plate 261, a fourth push block 262 and a first U-shaped plate 263. The fourth variable pitch movable plate 261 is slidably connected to the support frame 1, and at least one battery core clamp 27 is connected to the fourth variable pitch movable plate 261. The fourth push block 262 is fixedly arranged on the fourth variable pitch movable plate 261. One end of the first U-shaped plate 263 is connected to the support frame 1, and the other end of the first U-shaped plate 263 is suspended above the fourth variable pitch movable plate 261. The first U-shaped plate 263 is provided with a U-shaped groove 264, and the fourth push block 262 is located in the U-shaped groove 264. One end of the third rectangular plate 253 is fixedly connected to the fourth variable pitch movable plate 261. A fourth buffer 265 is provided on the inner bottom surface of the U-shaped groove 264, and the fourth buffer 265 is used for buffering the fourth push block 262. Preferably, two battery cell clamps 27 are connected to each of the first variable-length movable plate 231, the second variable-length movable plate 241, the third variable-length movable plate 251, and the fourth variable-length movable plate 261. In the order of the first variable-length movable plate 231, the second variable-length movable plate 241, the third variable-length movable plate 251, and the fourth variable-length movable plate 261, the distance between the two battery cell clamps 27 connected to the first variable-length movable plate 231, the second variable-length movable plate 241, the third variable-length movable plate 251, and the fourth variable-length movable plate 261 gradually increases or decreases. In this way, when the first-stage variable-pitch jaw assembly 23, the second-stage variable-pitch jaw assembly 24, the third-stage variable-pitch jaw assembly 25 and the fourth-stage variable-pitch jaw assembly 26 are gathered together, the battery cell jaws 27 on the first-stage variable-pitch jaw assembly 23, the second-stage variable-pitch jaw assembly 24, the third-stage variable-pitch jaw assembly 25 and the fourth-stage variable-pitch jaw assembly 26 form a layered progressive structure in the order from inside to outside or from outside to inside, thereby reducing the overall footprint of the gripping mechanism.

[0025] In the above structure, two symmetrical and parallel linear guide rails 11 are provided on the support frame 1, and two sliders 12 are connected to the first variable-pitch movable plate 231, the second variable-pitch movable plate 241, the third variable-pitch movable plate 251 and the fourth variable-pitch movable plate 261. The two sliders 12 and the two symmetrical and parallel linear guide rails 11 are arranged one by one, and the sliders 12 are arranged on the linear guide rails 11, and the sliders 12 can slide along the linear guide rails 11.

[0026] In the above structure, an intermediate connection block 13 is provided in the middle position of the support frame 1, and the two ends of the first U-shaped plate 263 in the opening direction are fixedly connected to the intermediate connection block 13. Both ends of the support frame 1 in the length direction are connected to T-shaped plates 14, and a separation round rod 15 is provided between the two T-shaped plates 14. The separation round rod 15 is located between the two battery cell clamps 27 connected to the first-stage variable pitch clamp assembly 23, the second-stage variable pitch clamp assembly 24, the third-stage variable pitch clamp assembly 25, and the fourth-stage variable pitch clamp assembly 26.

[0027] Reference Figure 6 As shown, the battery cell clamp 27 includes a transfer block 271, a clamp cylinder 272 and two symmetrically arranged clamping arms 273, the transfer block 271 is fixedly connected to the support frame 1, the clamp cylinder 272 is fixedly arranged on the transfer block 271, the two symmetrically arranged clamping arms 273 are connected to the clamp cylinder 272, the clamp arm 273 is connected with a clamping finger 274, and the clamp cylinder 272 drives the clamping finger 274 to clamp the battery cell. Pads 275 are arranged on the opposite end faces of the clamp cylinder 272.

[0028] Preferably, the power source 21 is a pneumatic cylinder, an oil cylinder or an electric cylinder.

[0029] Taking the case where the power source 21 is extended as an example, the working principle of the blade battery core variable distance grabbing mechanism of the present invention is as follows: S1, the piston rod of the power source 21 extends, driving the first variable-pitch movable plate 231 to move, and the first push block 232 moves synchronously with the first variable-pitch movable plate 231; S2, when the first push block 232 moves to one end of the first cam groove 234, the first push block 232 drives the first rectangular plate 233 to move because the first push block 232 and the first limiting bolt 235 are in contact; S3, since the first rectangular plate 233 is connected to the second variable-pitch movable plate 241, the second variable-pitch movable plate 241 moves, and the second push block 242 moves accordingly; S4, when the second push block 242 moves to one end of the second cam groove 244, the second push block 242 contacts the second limiting bolt 245, so the second push block 242 drives the second rectangular plate 243 to move; S5. Since the second rectangular plate 243 is connected to the third variable-pitch movable plate 251, the third variable-pitch movable plate 251 moves, and the third push block 252 moves accordingly; S6, when the third push block 252 moves to one end of the third cam groove 254, the third push block 252 drives the third rectangular plate 253 to move; S7, since the third rectangular plate 253 is connected to the fourth variable-pitch movable plate 261, the fourth variable-pitch movable plate 261 moves, and the fourth push block 262 moves along with the fourth variable-pitch movable plate 261; S8. At this time, the first variable-length movable plate 231, the second variable-length movable plate 241, the third variable-length movable plate 251 and the fourth variable-length movable plate 261 are unfolded at once, and the distances between the first variable-length movable plate 231, the second variable-length movable plate 241, the third variable-length movable plate 251 and the fourth variable-length movable plate 261 are adjusted to a position suitable for clamping the battery cell 200.

[0030] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A blade battery cell variable distance grabbing mechanism, characterized in that: include: A support frame and two symmetrically arranged variable-distance clamping jaw units, wherein the two symmetrically arranged variable-distance clamping jaw units are relatively staggered on the support frame, and the support frame is used to connect with the mechanical arm; The variable pitch jaw unit comprises a power source, a connecting plate 1, a primary variable pitch jaw assembly, a secondary variable pitch jaw assembly, a tertiary variable pitch jaw assembly and a quaternary variable pitch jaw assembly. The power source is fixedly arranged on a supporting frame, and the power source is connected to the primary variable pitch jaw assembly through a connecting plate 1. The primary variable pitch jaw assembly, the secondary variable pitch jaw assembly, the tertiary variable pitch jaw assembly and the quaternary variable pitch jaw assembly are all arranged on the supporting frame. The secondary variable pitch jaw assembly is connected to the tertiary variable pitch jaw assembly, and the tertiary variable pitch jaw assembly is connected to the quaternary variable pitch jaw assembly. The power source provides a driving force to adjust the spacing between the primary variable pitch jaw assembly, the secondary variable pitch jaw assembly, the tertiary variable pitch jaw assembly and the quaternary variable pitch jaw assembly. The primary variable pitch jaw assembly, the secondary variable pitch jaw assembly, the tertiary variable pitch jaw assembly and the quaternary variable pitch jaw assembly are all connected with a battery cell jaw, and the battery cell jaw is used to grab the battery cell.

2. The blade battery core variable distance grabbing mechanism according to claim 1, characterized in that: The first-stage variable pitch clamping jaw assembly includes a first variable pitch movable plate, a first push block and a first rectangular plate. The first variable pitch movable plate is slidably connected to the support frame, and at least one battery cell clamping jaw is connected to the first variable pitch movable plate. The first push block is fixedly arranged on the first variable pitch movable plate. One end of the first rectangular plate is connected to the second-stage variable pitch clamping jaw assembly, and the other end of the first rectangular plate is suspended above the first variable pitch movable plate. A first cam groove is arranged inside the first rectangular plate, and the first push block is located in the first cam groove.

3. The blade battery core variable distance grabbing mechanism according to claim 2, characterized in that: The secondary variable pitch clamping jaw assembly includes a second variable pitch movable plate, a second push block and a second rectangular plate. The second variable pitch movable plate is slidably connected to the support frame, and at least one battery cell clamping jaw is connected to the second variable pitch movable plate. The second push block is fixedly arranged on the second variable pitch movable plate. One end of the second rectangular plate is connected to the third-stage variable pitch clamping jaw assembly, and the other end of the second rectangular plate is suspended above the second variable pitch movable plate. The second rectangular plate is provided with a second cam groove, and the second push block is located in the second cam groove. The first rectangular plate and the second variable pitch movable plate are fixedly connected.

4. The blade battery core variable distance grabbing mechanism according to claim 3, characterized in that: The three-stage variable pitch clamping jaw assembly includes a third variable pitch movable plate, a third push block and a third rectangular plate. The third variable pitch movable plate is slidably connected to the support frame, and at least one battery cell clamping jaw is connected to the third variable pitch movable plate. The third push block is fixedly arranged on the third variable pitch movable plate, one end of the third rectangular plate is fixedly connected to the four-stage variable pitch clamping jaw assembly, and the other end of the third rectangular plate is suspended above the third variable pitch movable plate, a third cam groove is provided on the third rectangular plate, the third push block is located in the third cam groove, and one end of the second rectangular plate is fixedly connected to the third variable pitch movable plate.

5. The blade battery core variable distance grabbing mechanism according to claim 4, characterized in that: The four-stage variable pitch clamp assembly includes a fourth variable pitch movable plate, a fourth push block and a first U-shaped plate. The fourth variable pitch movable plate is slidably connected to the support frame, and at least one battery cell clamp is connected to the fourth variable pitch movable plate. The fourth push block is fixedly arranged on the fourth variable pitch movable plate, one end of the first U-shaped plate is connected to the support frame, and the other end of the first U-shaped plate is suspended above the fourth variable pitch movable plate, the first U-shaped plate is provided with a U-shaped groove, the fourth push block is located in the U-shaped groove, and one end of the third rectangular plate is fixedly connected to the fourth variable pitch movable plate.

6. The blade battery core variable distance grabbing mechanism according to claim 5, characterized in that: The support frame is provided with two symmetrical and parallel linear guide rails, and the first variable-pitch movable plate, the second variable-pitch movable plate, the third variable-pitch movable plate and the fourth variable-pitch movable plate are each connected with two sliders, and the two sliders are arranged in a one-to-one correspondence with the two symmetrical and parallel linear guide rails, and the sliders are arranged on the linear guide rails, and the sliders can slide along the linear guide rails.

7. The blade battery core variable distance grabbing mechanism according to claim 5, characterized in that: An intermediate connecting block is provided in the middle of the support frame, and both ends of the first U-shaped plate in the opening direction are fixedly connected to the intermediate connecting block.

8. The blade battery cell variable distance grabbing mechanism according to claim 1, characterized in that: The battery cell clamp includes an adapter block, a clamp cylinder and two symmetrically arranged clamping arms, the adapter block is fixedly connected to the support frame, the clamp cylinder is fixedly arranged on the adapter block, the two symmetrically arranged clamping arms are connected to the clamp cylinder, the clamp arms are connected with clamping fingers, and the clamp cylinder drives the clamping fingers to clamp the battery cell.

9. The blade battery core variable distance grabbing mechanism according to claim 8, characterized in that: Pads are provided on the opposite end surfaces of the clamping jaw cylinder.

10. The blade battery core variable distance grabbing mechanism according to claim 1, characterized in that: The power source is a pneumatic cylinder, an oil cylinder or an electric cylinder.

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