A clamping and feeding device for lithium battery processing

Abstract

The utility model relates to the technical field of fixture for lithium battery processing, specifically relates to a kind of clamping feeding device for lithium battery processing.The device includes, finger air cylinder, the two fingers of the finger air cylinder are configured to move towards and reverse;Clamp plate, two clamp plates are respectively arranged on two fingers for following the side wall of current collector assembly with the fingers towards and move clamping, the opposite side of clamp plate is equipped with the flexible buffer layer abutting the side of current collector assembly;Elastic member, the elastic member is located between two fingers for pushing out current collector assembly after two clamp plates release, one end of elastic member is arranged on the cylinder body of finger air cylinder, the other end is equipped with the push plate between two clamp plates, and the push plate is used to abut the end face of current collector and outside carbon ring of current collector assembly simultaneously.By pneumatic moving clamp plate, it has better sensitivity and flexibility, has higher protection effect, through elastic member and push plate, the end face of current collector assembly can be abutted to push out current collector assembly, to avoid the separation of current collector and carbon ring.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology for lithium battery processing, and specifically to a clamping and feeding device for lithium battery processing. Background Technology

[0002] In lithium battery production, after the current collector and the outer carbon ring are assembled into a current collector assembly, a clamp is often used to hold the current collector assembly for transport. Conventional clamps generally use a hard drive method such as a motor and a lead screw. For example, a lithium battery clamping device with a protective structure disclosed in patent publication number "CN222644622U" uses the aforementioned hard drive method of a motor and a lead screw. The lead screw has rubber flexible plates and clamping plates on both sides, and achieves flexible clamping and release functions through a movable nut block and a bidirectional screw connected to it. Because the current collector assembly is fragile, the hard drive method of moving the clamping plates during clamping can easily cause damage such as deformation and breakage, thereby reducing the energy storage performance and safety performance of the battery and affecting the yield. In addition, when the current collector assembly is put into the negative mold, its current collector is prone to separating from the outer carbon ring and popping out. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology and provide a clamping and feeding device for lithium battery processing.

[0004] The technical solution adopted in this utility model is: a clamping and feeding device for lithium battery processing, the device comprising... A finger cylinder, wherein the two finger grippers of the finger cylinder are configured to move toward and in opposite directions; Clamping plates, two clamping plates are respectively set on two clamping fingers to clamp the side wall of the current collector assembly as the clamping fingers move towards each other. The opposing sides of the clamping plates are provided with a flexible buffer layer that abuts against the side of the current collector assembly. An elastic element is located between two fingers to push out the manifold assembly after the two clamps are released. One end of the elastic element is provided on the cylinder body of the finger cylinder, and the other end is provided with a push plate located between the two clamps. The push plate is used to simultaneously abut against the manifold of the manifold assembly and the end face of the outer carbon ring.

[0005] Furthermore, when the two clamping plates move toward each other to the abutting limit position, the two buffer layers clamp and fix the circumferential side surface of the carbon ring.

[0006] Furthermore, the two clamping plates are provided with arc-shaped grooves on their opposing sides, and the buffer layer is provided in the arc-shaped grooves.

[0007] Furthermore, the clamping plate includes a mounting block for fixing the clamping fingers and a clamping block for connecting the mounting block. The two clamping blocks abut against each other and limit each other when clamping the current collector assembly. The clamping block is provided with the arc-shaped groove, and the axial direction of the arc-shaped groove is consistent with the length direction of the current collector assembly.

[0008] Furthermore, it also includes a mounting plate, which has an L-shaped structure. One side of the mounting plate is fixed to the side of the finger cylinder body, and the other side is located between two fingers. One end of the elastic element is fixed on the other side of the mounting plate, and the other end is provided with the push plate.

[0009] Furthermore, the mounting block and the clamping block are connected in an L-shaped structure; when the two clamping blocks abut against each other, there is a clearance gap between the two mounting blocks, and the elastic element is installed on the other side of the mounting plate within the clearance gap.

[0010] Furthermore, the elastic element includes a spring, one end of which is fixed to the other side of the mounting plate, and the other end is fixed to a push plate.

[0011] Furthermore, a top plate is fixed to one end of the spring, and the top plate is fixed to the other side of the mounting plate.

[0012] Furthermore, a guide post is provided on the top plate, one end of the spring is sleeved on the guide post, and the other end is provided with the push plate. A compression gap for axial deformation of the spring is provided between the push plate and the guide post.

[0013] Furthermore, the axial length of the arc-shaped groove is not less than 10% of the length of the current collector assembly.

[0014] Furthermore, the buffer layer comprises a foam material.

[0015] The beneficial effects of this utility model include: 1. The two gripping fingers of the pneumatically controlled finger cylinder move in opposite directions, driving the movement of two clamping plates to achieve clamping and releasing. The pneumatically controlled clamping plates move more gently when clamping the manifold assembly, providing a certain amount of buffering force. The flexible buffer layer further provides buffering force when clamping the manifold assembly. Compared with the movement of the clamping plates driven by the rotation of the lead screw, the pneumatically controlled clamping plates have a faster response speed and will not cause force control lag that could cause squeezing damage to the manifold assembly. The start-stop inertia is small. When feeding the manifold assembly, the push plate connected by the elastic element simultaneously abuts against the end face of the manifold assembly and the end face of the carbon ring, pushing the manifold assembly into the female mold. This can prevent the manifold assembly from popping out of the carbon ring, making it convenient to use. 2. When the two buffer layers clamp the current collector assembly, the opposing movement of the two clamping plates acts as a stop and limit, preventing excessive movement of the clamping plates from causing excessive clamping force and damaging the current collector assembly, thus maintaining the magnitude of the clamping force on the current collector assembly each time. 3. After installing the buffer layer through the arc-shaped groove on the opposite side of the clamping plate, it is adapted to clamp the current collector assembly of the cylindrical lithium battery. 4. The clamping plate is connected to the clamping finger through the mounting block. When clamped by the clamping block, it abuts and limits the movement. The structure is simple. The axial direction of the arc groove is consistent with the length direction of the current collector assembly. When clamped, it can automatically correct the posture of the current collector assembly and prevent the current collector assembly from deviating to the side. 5. The L-shaped mounting plate provides the mounting position for the elastic element, which is suitable for finger cylinders with two gripping fingers on the same slide groove; the other side of the mounting plate is located between the two gripping fingers to facilitate the corresponding placement of the elastic element on the axial direction of the manifold assembly; 6. The clearance between the two mounting blocks allows the other side of the mounting plate to be accommodated, enabling the elastic element to be installed in the axial direction of the clamped current collector assembly within the clearance. The clearance also allows observation of whether the current collector end face protrudes beyond the carbon ring end face. 7. The elastic element uses a spring, which has a simple structure, low cost, and can provide a flexible thrust to push out the current collector assembly, making it easy to use; 8. The spring is fixed to the other side of the mounting plate via the top plate, which facilitates the assembly of the spring and the L-shaped mounting plate after they are manufactured separately; 9. The axial length of the arc groove is not less than 10% of the length of the current collector assembly. When clamping the current collector assembly, it can automatically correct the posture of the current collector assembly, avoid lateral deviation, and improve the coaxiality between the current collector assembly and the arc groove. 10. The buffer layer is made of foam material, which has a certain degree of rigidity to hold the current collector component while having the flexibility to absorb excessive force during deformation, thus protecting the current collector component.

[0016] The present invention relates to a clamping and feeding device for lithium battery processing, which adopts a pneumatic flexible control to move the movement of two clamping fingers, thereby moving two clamping plates to clamp the current collector assembly. It has higher flexibility, and the buffer layer enhances the buffering force to protect the current collector assembly. Moreover, the pneumatic control of the clamping plate movement is highly responsive. When the current collector assembly is pushed out by the push plate on the elastic element simultaneously abutting against the carbon ring and the end face of the current collector, the current collector can be prevented from popping out of the carbon ring. It is easy to use and has great promotional value. Attached Figure Description

[0017] Figure 1 Schematic diagram of a clamping and feeding device for lithium battery processing; Figure 2 : Exploded view of the clamping and feeding device for lithium battery processing; Figure 3 A cross-sectional schematic diagram of a clamping and feeding device for lithium battery processing holding a current collector assembly. Figure 4 : A cross-sectional schematic diagram of the current collector assembly released by the clamping and feeding device for lithium battery processing; Wherein: 1-finger cylinder; 11-finger clamp; 2-clamping plate; 21-mounting block; 22-clamping block; 23-arc groove; 24-buffer layer; 3-elastic element; 4-push plate; 5-mounting plate; 6-top plate; 7-current collector assembly; 71-current collector; 72-carbon ring. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary. The drawings are not drawn to scale and are intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] In the production line operation of lithium batteries, after the current collector 71 is assembled with carbon ring 72 to form current collector assembly 7, a clamp is often used to hold the current collector assembly 7 and transfer it into the female mold for subsequent production steps. During clamping and transfer, the current collector assembly 7 is easily damaged, such as deformation or breakage of carbon ring 72, or separation of current collector 71 from carbon ring 72.

[0023] This utility model relates to a clamping and feeding device for lithium battery processing. The device uses pneumatic control of the two gripping fingers 11 of the finger cylinder 1 to move in opposite directions, driving the movement of two clamping plates 2 to achieve clamping and releasing. The pneumatic control of the clamping plates 2 makes clamping the current collector assembly 7 more gentle, providing a certain amount of buffering force. The buffer layer 24 further provides buffering force by flexibly clamping the current collector assembly 7. Compared to the movement of the clamping plates 2 driven by a lead screw, the pneumatic control of the clamping plates 2 has a faster response speed, avoids force control lag that could cause squeezing damage to the current collector assembly 7, and has low start-stop inertia. When feeding the current collector assembly 7, the push plate 4, connected by the elastic element 3, simultaneously abuts against the end face of the current collector 71 and the end face of the carbon ring 72, pushing the current collector assembly 7 into the female mold. This prevents the current collector 71 from popping out of the carbon ring 72, making it convenient to use.

[0024] A clamping and feeding device for lithium battery processing, specifically, such as Figure 1-4 As shown, the device includes a finger cylinder 1, clamping plates 2, and an elastic element 3. The two clamping fingers 11 of the finger cylinder 1 are configured to move in opposite directions and in the opposite direction. The finger cylinder 1 can be a commercially available pneumatic finger cylinder 1. The two clamping plates 2 are respectively provided on the two clamping fingers 11 to clamp the side wall of the fluid collector assembly 7 as the clamping fingers 11 move in opposite directions. The opposing sides of the two clamping plates 2 are provided with a flexible material buffer layer 24 that abuts against the side of the fluid collector assembly 7. The elastic element 3 is located between the two clamping fingers 11 to push out the fluid collector assembly 7 after the two clamping plates 2 are released. One end of the elastic element 3 is provided on the cylinder body of the finger cylinder 1, and the other end is provided with a push plate 4 located between the two clamping plates 2. The push plate 4 is used to simultaneously abut against the end face of the fluid collector 71 of the fluid collector assembly 7 and the outer carbon ring 72 to prevent the fluid collector 71 from popping out of the carbon ring 72 when the fluid collector assembly 7 enters the female mold.

[0025] In use, the lifting and moving finger cylinder 1 causes the push plate 4 to simultaneously abut against the end faces of the collector 71 and the carbon ring 72 and compress the elastic element 3. The pneumatically controlled two clamping fingers 11 drive the two clamping plates 2 to move towards each other to the side wall of the collector assembly 7. When it is transferred to the top of the female mold, the pneumatically adjusted clamping plate 2 moves away from the mold to release the collector assembly 7. The collector assembly 7 is pushed into the female mold by the push plate 4 under the thrust of the elastic element 3, which can prevent the collector 71 from popping out of the carbon ring 72.

[0026] In one implementation scheme, such as Figure 1 As shown, when the two clamping plates 2 move toward each other to the abutting limit position, the two buffer layers 24 clamp and fix the peripheral side of the carbon ring 72. The abutting limit effect of the two clamping plates 2 moving toward each other prevents the clamping plates 2 from moving excessively and causing excessive clamping force that could damage the current collector assembly 7, thus maintaining the magnitude of the clamping force on the current collector assembly 7 each time.

[0027] To adapt to the production of cylindrical lithium batteries, in one embodiment, such as Figure 2 As shown, the two clamping plates 2 have arc-shaped grooves 23 on their opposing sides, and a buffer layer 24 is provided on the inner wall of the arc-shaped grooves 23. The two arc-shaped grooves 23 are adapted to fit on both sides of the cylindrical current collector assembly 7 and clamp the side walls of the current collector assembly 7 through the buffer layer 24.

[0028] In some embodiments, such as Figure 2-3As shown, the clamping plate 2 includes a mounting block 21 that fixes to the clamping fingers 11 and a clamping block 22 that connects to the mounting block 21. The two clamping blocks 22 abut and limit the clamping of the current collector assembly 7. The clamping block 22 is provided with an arc-shaped groove 23, the axial direction of which is consistent with the length direction of the current collector assembly 7. In use, the two mounting blocks 21 are bolted to the opposite sides of the two clamping fingers 11, extending downward and connecting to the clamping blocks 22, so that the clamping plate 2 has an L-shaped structure. The opposing sides of the clamping blocks 22 are provided with arc-shaped grooves 23, and an arc-shaped buffer layer 24 is provided in the arc-shaped grooves 23. The clamping plate 2 is connected to the clamping fingers 11 through the mounting block 21 and abuts and limits the clamping when clamped by the clamping blocks 22. The structure is simple. The axial direction of the arc-shaped groove 23 is consistent with the length direction of the current collector assembly 7. When clamped, it can automatically correct the posture of the current collector assembly 7 and prevent the current collector assembly 7 from deviating to the side.

[0029] The clamping plate 2 includes a mounting block 21 and a clamping block 22, such as Figure 1-2 As shown, it also includes a mounting plate 5, which has an L-shaped structure. One side of the mounting plate 5 is fixed to the side of the cylinder body of the finger cylinder 1, and the other side is located between the two gripping fingers 11. When the finger cylinder 1 is in use, the distance between the two gripping fingers 11 allows the other side of the mounting plate 5 to be accommodated. One end of the elastic element 3 is fixed on the other side of the mounting plate 5, and the other end is provided with a push plate 4. The L-shaped mounting plate 5 provides the installation position of the elastic element 3, which is suitable for finger cylinders 1 with two gripping fingers 11 on the same slide groove. The other side of the mounting plate 5 is located between the two gripping fingers 11, which facilitates the corresponding placement of the elastic element 3 on the axial direction of the manifold assembly 7.

[0030] This device also includes a mounting plate 5, such as Figure 1-2 As shown, the mounting block 21 and the clamping block 22 are connected in an L-shaped structure. When the two clamping blocks 22 abut against each other, there is a clearance gap between the two mounting blocks 21. The other side of the mounting plate 5 is located within the clearance gap and an elastic element 3 is installed there, so that the elastic element 3 is positioned above the clamping position of the current collector assembly 7. This design allows the elastic element 3 to be installed in the axial direction of the current collector assembly 7 after clamping within the clearance gap. It also allows observation of whether the end face of the current collector 71 protrudes beyond the end face of the carbon ring 72 through the clearance gap, making it convenient to use.

[0031] In one embodiment, such as Figure 2 As shown, the elastic element 3 includes a spring, with one end of the spring fixed to the other side of the mounting plate 5 and the other end fixed to a push plate 4. The elastic element 3 uses a spring, which has a simple structure, low cost, and can provide a flexible thrust to push out the current collector assembly 7, making it convenient to use.

[0032] like Figure 2As shown, a top plate 6 is fixed to one end of the spring, and the top plate 6 is fixed to the other side of the mounting plate 5. A push plate 4 is provided at the other end of the spring. The spring is fixed to the other side of the mounting plate 5 by the top plate 6, which facilitates the separate production of the spring and the L-shaped mounting plate 5 before assembly. The top plate 6 can be glued to the wall surface of the other side of the mounting plate 5.

[0033] In one embodiment, a guide post is provided on the bottom side of the top plate 6, one end of the spring is sleeved on the guide post, and the other end is provided with a push plate 4. A compression gap for axial deformation of the spring is provided between the push plate 4 and the guide post. Guiding the root of the spring can prevent the spring from deflecting to the side when it is compressed.

[0034] In one embodiment, the axial length of the arc groove 23 is not less than 10% of the length of the current collector assembly 7, that is, the ratio of the axial length of the arc groove 23 to the axial length of the current collector assembly 7 is not less than 10%, preferably 20-80%, and can be any ratio in the range of 10%-80%, such as 25%, 30%, 40%, 50%, 60%, 70%, 75%, etc., so that the contact surface between the buffer layer 24 and the side of the current collector assembly 7 has a certain length in the length direction of the current collector assembly 7, so as to improve the coaxiality between the current collector assembly 7 and the predetermined clamping position when clamping the current collector assembly 7, and avoid the current collector assembly 7 from being biased to the side when clamped, which would affect the subsequent production process.

[0035] In one embodiment, the buffer layer 24 includes a foam material, which has a certain degree of hardness and better flexibility than rubber material, and can deform to absorb excessive clamping force when holding the current collector component 7.

[0036] In actual use, the finger cylinder 1 has an L-shaped clamping plate 2 on its finger clamping 11. The clamping plate 2 is bolted to the finger clamping 11 via the mounting block 21. The clamping block 22 of the clamping plate 2 has an arc-shaped groove 23 on its opposing side. The arc-shaped groove 23 has an arc-shaped buffer layer 24 made of foam material inside. The buffer layer 24 is adapted to make surface contact with the outer peripheral sidewall of the current collector assembly 7. The axial length of the arc-shaped groove 23 is not less than 10% of the length of the current collector assembly 7. One end of the L-shaped mounting plate 5 is bolted to the cylinder body of the finger cylinder 1. The other end of the mounting plate 5 is located between the two clamping plates 2. One end of the spring is fixed to the other side of the mounting plate 5 and is located above the clamping position of the current collector assembly 7. The other end of the spring is fixed with a push plate 4. When the two buffer layers 24 abut and limit the clamping blocks 22 of the two clamping plates 2, they clamp and fix the current collector assembly 7, thereby ensuring a homogeneous clamping force.

[0037] In summary, the pneumatic flexible control of the movement of the two clamping fingers 11 drives the two clamping plates 2 to move and clamp the current collector assembly 7, which has higher flexibility. Combined with the buffer layer 24, the buffering force is improved and the current collector assembly 7 is protected. Moreover, the pneumatic control of the movement of the clamping plates 2 is sensitive. When the current collector assembly 7 is pushed out by the push plate 4 on the elastic element 3 simultaneously abutting against the carbon ring 72 and the end face of the current collector 72, the current collector 71 can be prevented from popping out of the carbon ring 72. When the two buffer layers 24 clamp and fix the current collector assembly 7 when the clamping blocks 22 of the two clamping plates 2 abut and limit it, the uniform clamping force is guaranteed. It is easy to use and has great promotional value.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping and feeding device for lithium battery processing, characterized in that: include, A finger cylinder, wherein the two finger grippers of the finger cylinder are configured to move toward and in opposite directions; Clamping plates, two clamping plates are respectively set on two clamping fingers to clamp the side wall of the current collector assembly as the clamping fingers move towards each other. The opposing sides of the clamping plates are provided with a flexible buffer layer that abuts against the side of the current collector assembly. An elastic element is located between two fingers to push out the manifold assembly after the two clamps are released. One end of the elastic element is provided on the cylinder body of the finger cylinder, and the other end is provided with a push plate located between the two clamps. The push plate is used to simultaneously abut against the manifold of the manifold assembly and the end face of the outer carbon ring.

2. The clamping and feeding device for lithium battery processing as described in claim 1, characterized in that: When the two clamping plates move toward each other to the abutting limit position, the two buffer layers clamp and fix the circumferential side of the carbon ring.

3. The clamping and feeding device for lithium battery processing as described in claim 2, characterized in that: The two clamping plates have arc-shaped grooves on their opposite sides, and the buffer layer is provided in the arc-shaped grooves.

4. The clamping and feeding device for lithium battery processing as described in claim 3, characterized in that: The clamping plate includes a mounting block for fixing the clamping fingers and a clamping block for connecting the mounting block. The two clamping blocks abut against each other and limit each other when clamping the current collector assembly. The clamping block is provided with the arc-shaped groove, and the axial direction of the arc-shaped groove is consistent with the length direction of the current collector assembly.

5. The clamping and feeding device for lithium battery processing as described in claim 4, characterized in that: It also includes a mounting plate, which has an L-shaped structure. One side of the mounting plate is fixed to the side of the finger cylinder body, and the other side is located between two fingers. One end of the elastic element is fixed to the other side of the mounting plate, and the other end is provided with the push plate.

6. The clamping and feeding device for lithium battery processing as described in claim 5, characterized in that: The mounting block and the clamping block are connected in an L-shaped structure; when the two clamping blocks abut against each other, there is a clearance gap between the two mounting blocks, and the elastic element is installed on the other side of the mounting plate within the clearance gap.

7. The clamping and feeding device for lithium battery processing as described in claim 5, characterized in that: The elastic element includes a spring, one end of which is fixed to the other side of the mounting plate, and the other end is fixed to a push plate.

8. The clamping and feeding device for lithium battery processing as described in claim 7, characterized in that: One end of the spring is fixed with a top plate, and the top plate is fixed on the other side of the mounting plate.

9. The clamping and feeding device for lithium battery processing as described in claim 4, characterized in that: The axial length of the arc-shaped groove is not less than 10% of the length of the current collector assembly.

10. The clamping and feeding device for lithium battery processing as described in claim 1, characterized in that: The buffer layer comprises foam material.

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