Grabbing mechanism and soft package lithium cell formation automatic production equipment

Abstract

The utility model belongs to the technical field of soft package lithium cell formation automatic production equipment, and particularly relates to a grabbing mechanism which comprises a fixing frame, a driving assembly and a plurality of grabbing and clamping assemblies, the driving assembly and the grabbing and clamping assemblies are fixedly installed on the fixing frame, and the driving assembly is used for controlling the grabbing and clamping assemblies to be closed. The grabbing and clamping assembly comprises a piston rod and clamping plates installed on the two sides of the piston rod through a center shaft, and the piston rod is sleeved with a self-locking spring. Due to the arrangement of the self-locking spring, the mechanism can be in a normally-closed state, it is guaranteed that grabbed objects cannot fall off when a machine is suddenly powered off, and stability is improved. In addition, the utility model further discloses automatic production equipment for formation of the soft package lithium battery cell, which comprises the grabbing mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of soft-pack lithium battery cell formation automatic production equipment, and specifically relates to a grasping mechanism and soft-pack lithium battery cell formation automatic production equipment. Background Art

[0002] In the processing and production of soft-pack lithium batteries, in order to improve production efficiency and ensure the yield rate, fully automatic processing technology is often used, which can effectively improve the processing technology level and improve production efficiency.

[0003] In many fully automatic production equipment for soft-pack lithium batteries, the grabbing of soft-pack lithium batteries is an indispensable step. The key is that the soft-pack lithium batteries need to go back and forth between different mechanisms, and a reliable soft-pack lithium battery grabbing mechanism is particularly important. The existing soft-pack lithium battery grabbing mechanisms are generally cylinder-linked, but the stability of grabbing soft-pack lithium batteries has become a major problem in the production of a large number of equipment. Unstable grabbing can cause the soft-pack lithium batteries to fall during transportation, thereby affecting production efficiency. What is more serious is that the soft-pack lithium batteries may fall into other mechanisms and equipment below during the journey, resulting in unpredictable consequences. For this reason, it is urgent to propose a new technical solution to solve the above problems. Utility Model Content

[0004] One of the purposes of the utility model is to address the deficiencies of the prior art and provide a gripping mechanism which, by providing a self-locking spring, can maintain a gripping state in the event of a sudden power outage, thereby preventing the gripped battery cell from suddenly falling and improving safety.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gripping mechanism comprises a fixed frame, a driving assembly fixedly mounted on the fixed frame and a plurality of gripping assemblies, wherein the driving assembly is used to control the closing of the gripping assemblies, and the gripping assemblies comprise a piston rod and clamping plates mounted on both sides of the piston rod through a central axis, and the piston rod sleeve is provided with a self-locking spring.

[0007] In actual applications, the self-locking spring is in a miniature state when at rest, and the gripping assembly is controlled to be a normally closed structure, so that when the driving assembly suddenly loses power and cannot control the gripping assembly, the gripping assembly can still clamp the gripped battery cell, thereby increasing the safety and stability of the gripping mechanism.

[0008] As an improvement of the grasping mechanism of the present utility model, the clamping component further includes a positioning block. A hollow cavity is arranged inside the positioning block. The hollow cavity includes a first cavity and a second cavity that are interconnected. The first cavity is arranged in a cylindrical structure and is used for placing the piston rod. The second cavity is arranged in a cuboid structure and is used for placing part of the clamping plate. A restricting body is arranged in the first cavity, and the restricting body abuts against the self-locking spring. The clamping plate is connected to the positioning block through a fixing pin. The positioning block plays a role in restricting and protecting, preventing the movement track of the clamping plate and the central axis from deviating from the set value.

[0009] As an improvement of the grasping mechanism of the present utility model, the clamping plate includes a connecting block and a plate body that are connected to each other. The connecting block includes a first connecting body and a second connecting body that are connected to each other. The first connecting body is connected to the plate body. A first mounting hole is arranged on the second connecting body, and the fixing pin passes through the first mounting hole.

[0010] As an improvement of the grasping mechanism of the present utility model, the second connecting body extends along the direction of the piston rod to have a mounting block. Two opposite mounting blocks are arranged in a staggered manner and abut against each other in the longitudinal axis direction. One end of the mounting block facing the piston rod is provided with a second mounting hole, and the second mounting hole is in a semi-surrounding structure of a C shape.

[0011] As an improvement of the grasping mechanism of the present utility model, two opposite second mounting holes are arranged in sequence in the longitudinal axis direction to form an adjustment hole. The adjustment hole is used for mounting the central axis. The adjustment hole is composed of two second mounting holes, enabling the two clamping plates to open and close following the up and down movement of the central axis, ensuring the smooth realization of the grasping action.

[0012] As an improvement of the grasping mechanism of the present utility model, the surface of the plate body facing the piston rod is a clamping surface. Flexible material layers are arranged on two opposite clamping surfaces. The flexible material layers can reduce the damage suffered by the clamped item due to clamping, further increasing the safety of the grasping mechanism.

[0013] As an improvement of the grasping mechanism of the present utility model, the driving component includes a motor and a speed reducer. The output end of the motor is connected to the input end of the speed reducer, and the output end of the speed reducer is connected with a push-pull screw rod.

[0014] As an improvement of the grabbing mechanism described in the utility model, the driving assembly also includes an adjusting plate and a bearing, the bearing passes through the adjusting plate and the fixing frame to connect the adjusting plate and the fixing frame, the fixing frame is provided with an adjusting hole, one end of the bearing is located in the adjusting hole, and the other end of the bearing is exposed to the adjusting plate, the push-pull screw is sleeved with a push-pull block, the push-pull block is provided with an inclined surface structure, the inclined surface structure is arranged corresponding to the bearing, the adjusting plate is provided with an adjusting groove, and part of the push-pull block and the bearing are located in the adjusting groove.

[0015] As an improvement of the grabbing mechanism described in the utility model, a fixing block is fixedly installed on one end of the piston rod away from the clamping plate, and a receiving groove is provided on one side of the adjustment plate away from the adjustment groove, and the fixing block is at least partially located in the receiving groove.

[0016] In actual application, the motor drives the reducer to perform rotational motion, and the push-pull screw converts the rotational motion into linear motion, driving the push-pull block to perform linear motion. Since the push-pull block has the inclined surface structure, it presses the bearing and the adjusting block to move up and down, so that the fixed block located in the adjusting block drives the piston rod to perform linear motion, drives the splint to open and close, and completes the grasping action.

[0017] The second purpose of the utility model is to provide an automated production device for forming soft-pack lithium battery cells, including the grabbing mechanism as described above.

[0018] The beneficial effect of the utility model is that the grabbing mechanism of the utility model comprises a fixing frame, a driving assembly fixedly mounted on the fixing frame and a plurality of grabbing assemblies, the driving assembly is used to control the closing of the grabbing assemblies, the grabbing assemblies comprise a piston rod and clamps mounted on both sides of the piston rod through a central axis, and the piston rod sleeve is provided with a self-locking spring. The setting of the self-locking spring makes the grabbing mechanism in a normally closed state when not started, ensuring that the grabbed battery core will not fall off when the machine is suddenly powered off, thereby increasing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] Figure 1 This is one of the structural schematic diagrams of implementation mode 1 of the present utility model.

[0021] Figure 2 This is the second structural diagram of the first implementation mode of the present utility model.

[0022] Figure 3 This is the third structural diagram of the first embodiment of the utility model. (without adjustment plate)

[0023] Figure 4 This is a structural schematic diagram of the grabbing assembly in the first embodiment of the utility model (without positioning blocks).

[0024] Figure 5 The figure is a schematic structural diagram of a positioning block according to an embodiment of the utility model.

[0025] Figure 6 It is a structural schematic diagram of implementation mode 2 of the present utility model.

[0026] The reference numerals are described as follows:

[0027] 1-fixed frame; 11-back panel; 12-side panel; 13-adjustment hole;

[0028] 2-driving assembly; 21-motor; 22-reducer; 23-push-pull screw; 231-screw part; 232-connecting part; 24-adjusting plate; 241-adjusting groove; 25-bearing; 26-push-pull block;

[0029] 3-catch assembly; 31-piston rod; 32-central axis; 33-clamping plate; 331-connecting block; 3311-first connecting body; 3312-second connecting body; 3313-first mounting hole; 3314-mounting block; 3315-adjusting hole; 332-plate body; 3321-clamping surface; 3322-flexible material layer; 34-self-locking spring; 35-positioning block; 351-hollow cavity; 3511-first cavity; 3512-second cavity; 3513-limiting body; 36-fixing pin; 37-fixing block;

[0030] 100-fixing parts;

[0031] X-horizontal axis direction; Y-longitudinal axis direction; Z-vertical axis direction. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0034] Reference to "embodiment" in this application means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation to the present application.

[0037] The term "plurality" used in the present application refers to two or more (including two).

[0038] The following is combined with Figures 1 to 6 The utility model is further described in detail with specific implementation modes, but is not intended to limit the utility model.

[0039] Implementation Method 1

[0040] The following is combined with Figures 1 to 5 Description of Implementation Method 1

[0041] A gripping mechanism includes a fixed frame 1, a driving assembly 2 fixedly mounted on the fixed frame 1, and a plurality of gripping assemblies 3. In this embodiment, three gripping assemblies 3 are provided, and the driving assembly 2 is used to control the closing of the gripping assemblies 3. In this embodiment, the horizontal axis direction X, the longitudinal axis direction Y, and the vertical axis direction Z are perpendicular to each other.

[0042] Specifically, the fixing frame 1 includes a back plate 11 and side plates 12 fixedly installed on both sides of the back plate 11, and the driving assembly 2 includes a motor 21 and a reducer 22 fixedly installed on the side plate 12 relative to the outer side of the back plate 11, the motor 21 is a servo motor, and the reducer 22 is a worm gear reducer. The output end of the motor 21 is connected to the input end of the reducer 22, and the output end of the reducer 22 is connected to a push-pull screw 23, which is installed on the back plate 11. The push-pull screw 23 includes a spiral portion 231 and a connecting portion 232 that are connected to each other. The spiral portion 231 is provided with a threaded structure and is connected to the output end of the reducer 22, so that the push-pull screw 23 can convert the rotational motion of the reducer 22 into lateral motion in the horizontal axis direction X.

[0043] Specifically, the driving component 2 also includes an adjusting plate 24 and a bearing 25. The bearing 25 passes through the adjusting plate 24 and the back plate 11 to connect the adjusting plate 24 and the fixed frame 1. The back plate 11 is provided with an adjusting hole 13. The adjusting hole 13 is arranged in a long strip structure for the movement of the bearing 25. One end of the bearing 25 is located in the adjusting hole 13, and the other end of the bearing 25 is exposed from the adjusting plate 24. The connecting portion 232 is sleeved with a push-pull block 26. The push-pull block 26 is provided with an inclined surface structure. The inclined surface structure is arranged corresponding to the bearing 25. The adjusting plate 24 is provided with an adjusting groove 241. Part of the push-pull block 26 and the bearing 25 are located in the adjusting groove 241. The push-pull screw 23 drives the push-pull block 26 to move in the horizontal axis direction X, so that the inclined surface structure presses the bearing 25 to move in the adjusting hole 13, and then waits until the adjusting plate 24 makes a vertical movement in the vertical axis direction Z.

[0044] Specifically, the gripping assembly 3 includes a piston rod 31, a positioning block 35, and a splint 33 installed on both sides of the piston rod 31 through a central axis 32. A hollow cavity 351 is provided inside the positioning block 35. The hollow cavity 351 is used to place the piston rod 31 and part of the splint 33. The splint 33 is connected to the positioning block 35 through a fixing pin 36. The central axis 32 abuts against both sides of the hollow cavity 351. The positioning block 35 plays a limiting and protective role to prevent the movement trajectory of the splint 33 and the central axis 32 from deviating from the set value. At the same time, it can also prevent dust or debris from affecting the operation of parts, thereby ensuring the accuracy of the gripping mechanism.

[0045] Specifically, the clamping plate 33 includes a connecting block 331 and a plate body 332 that are connected to each other. The connecting block 331 includes a first connecting body 3311 and a second connecting body 3312 that are connected to each other. The first connecting body 3311 is connected to the plate body 332. A first mounting hole 3313 is provided on the second connecting body 3312. The fixing pin 36 passes through the first mounting hole 3313. The first mounting hole 3313 is provided at the corner of the second connecting body 3312 to fix the corner to the positioning block 35, which can maximize the limiting effect while maintaining the smoothness of the clamping action.

[0046] Specifically, the second connecting body 3312 extends along the direction of the piston rod 31 to form a mounting block 3314. Two opposite mounting blocks 3314 are arranged in a staggered manner and are in contact with each other in the longitudinal axis direction Y. One end of the mounting block 3314 facing the piston rod 31 is provided with a second mounting hole. The second mounting hole is a semi-surrounding structure in the shape of a "匚". Two opposite second mounting holes are arranged in sequence in the longitudinal axis direction Y to form an adjustment hole 3315. The adjustment hole 3315 is used to install the central shaft 32. The adjustment hole 3315 is composed of two second mounting holes, so that the two clamping plates 33 can open following the movement of the central shaft 32, ensuring the smooth realization of the grasping action.

[0047] Specifically, a self-locking spring 34 is sleeved on the piston rod 31. The hollow cavity 351 includes a first cavity 3511 and a second cavity 3512 that are communicated with each other. The first cavity 3511 is set as a cylindrical structure for placing the piston rod 31. The second cavity 3512 is set as a cuboid structure for placing part of the clamping plate 33. A restricting body 3513 is arranged in the first cavity 3511. The restricting body 3513 abuts against the self-locking spring 34. In this embodiment, the restricting body 3513 is set as a ring structure, which can better restrict the self-locking spring 34, so that the self-locking spring 34 is in a micro-shrunk state when not driven by the driving component 2, and then can control the two clamping plates 33 to be in a clamped state. When the piston rod 31 is acted on by the driving component 2, the self-locking spring 34 contracts, and the piston rod 31 moves downward in the vertical axis direction Z, pushing the clamping plate 33 to make a circular motion along the fixing pin 36. At this time, the grasping component 2 is in an open state. When the driving component 2 is powered off, the external force acting on the piston rod 31 disappears, and the self-locking spring 34 returns to the micro-shrunk state, and the grasping component 2 is in a closed state, avoiding the dropped of the grabbed battery cell due to sudden power-off and increasing safety.

[0048] So that the grasping component 3 is in a normally closed state when not in use, avoiding the situation that the grabbed battery cell suddenly drops due to sudden power-off of the grasping mechanism, and increasing the safety of the grasping mechanism.

[0049] Specifically, the side of the plate body 332 facing the piston rod 31 is a clamping surface 3321, and flexible material layers 3322 are provided on the two opposite clamping surfaces 3321. In the present embodiment, the flexible material layer 3322 is made of silicone and can be adjusted according to actual conditions. The flexible material layer 3322 can reduce the damage of the gripping assembly 3 to the clamped object and further increase the safety of the gripping mechanism.

[0050] Specifically, a fixing block 37 is fixedly installed on one end of the piston rod 31 away from the clamping plate 33, and a receiving groove is provided on the side of the adjustment plate 24 away from the adjustment groove 241. The fixing block 37 is at least partially located in the receiving groove, so that the fixing block 37 can follow the movement of the adjustment plate 24 to control the opening and closing of the clamping assembly 3.

[0051] In this embodiment, the working process of the grabbing mechanism is as follows: the self-locking spring 34 controls the grabbing assembly 3 to be in a normally closed state, supplies power to the motor 21, drives the reducer 22 to rotate, and the push-pull screw 23 converts the rotational action into a lateral movement in the horizontal axis direction X, thereby causing the inclined surface structure of the push-pull block 26 to press the bearing 25 to make a vertical movement in the vertical axis direction Z in the adjustment hole 13, and the bearing 25 drives the adjustment plate 24 to make a vertical movement, so that the fixed block 37 drives the piston rod 31 to press the central axis 32, and controls the clamping plate 33 to complete the clamping action.

[0052] Implementation Method 2

[0053] like Figure 6 As shown, different from the first embodiment, the present embodiment is provided with a plurality of gripping assemblies 3. To prevent the stability from being affected due to too many gripping assemblies 3, the present embodiment is provided with a fixing member 100. One end of the fixing member 100 is arranged on the adjustment plate 24, and the other end of the fixing member 100 is arranged on the positioning block 35 to prevent the gripping assembly 3 from shifting.

[0054] The other structures are the same as those in the first embodiment and will not be described again here.

[0055] Implementation Method 3

[0056] A soft-pack lithium battery cell formation automated production device comprises a gripping mechanism of the first or second implementation mode, wherein the gripping mechanism is used to grip a battery cell or a battery cell air bag.

[0057] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A gripping mechanism, characterized in that: It includes a fixing frame (1), a driving component (2) fixedly installed on the fixing frame (1), and a plurality of clamping components (3). The driving component (2) is used to control the closing of the clamping components (3). The clamping component (3) includes a piston rod (31) and clamping plates (33) installed on both sides of the piston rod (31) through a central shaft (32). A self-locking spring (34) is sleeved on the piston rod (31).

2. The gripping mechanism according to claim 1, characterized in that: The clamping component (3) further includes a positioning block (35). A hollow cavity (351) is arranged inside the positioning block (35). The hollow cavity (351) includes a first cavity (3511) and a second cavity (3512) that are interconnected. The first cavity (3511) is arranged as a cylindrical structure and is used to place the piston rod (31). The second cavity (3512) is arranged as a cuboid structure and is used to place part of the clamping plate (33). A limiting body (3513) is arranged in the first cavity (3511). The limiting body (3513) abuts against the self-locking spring (34). The clamping plate (33) is connected to the positioning block (35) through a fixing pin (36).

3. The gripping mechanism according to claim 2, characterized in that: The clamping plate (33) includes a connecting block (331) and a plate body (332) that are connected to each other. The connecting block (331) includes a first connecting body (3311) and a second connecting body (3312) that are connected to each other. The first connecting body (3311) is connected to the plate body (332). A first mounting hole (3313) is arranged on the second connecting body (3312). The fixing pin (36) passes through the first mounting hole (3313).

4. The gripping mechanism according to claim 3, characterized in that: The second connecting body (3312) extends along the direction of the piston rod (31) to form a mounting block (3314). Two opposite mounting blocks (3314) are arranged in a staggered manner and abut against each other in the longitudinal axis direction (Y). A second mounting hole is formed at one end of the mounting block (3314) facing the piston rod (31). The second mounting hole is a semi-surrounding structure in the shape of a C.

5. The gripping mechanism according to claim 4, characterized in that: Two opposite second mounting holes are arranged in sequence in the longitudinal axis direction (Y) to form an adjustment hole (3315). The adjustment hole (3315) is used to install the central shaft (32).

6. The gripping mechanism according to claim 3, characterized in that: One side of the plate body (332) facing the piston rod (31) is a clamping surface (3321). Flexible material layers (3322) are arranged on two opposite clamping surfaces (3321).

7. The gripping mechanism according to claim 1, characterized in that: The driving component (2) includes a motor (21) and a speed reducer (22). The output end of the motor (21) is connected to the input end of the speed reducer (22). The output end of the speed reducer (22) is connected to a push-pull screw rod (23).

8. The gripping mechanism according to claim 7, characterized in that: The driving assembly (2) further comprises an adjusting plate (24) and a bearing (25), wherein the bearing (25) passes through the adjusting plate (24) and the fixing frame (1) to connect the adjusting plate (24) and the fixing frame (1), the fixing frame (1) is provided with an adjusting hole (13), one end of the bearing (25) is located in the adjusting hole (13), and the other end of the bearing (25) is exposed from the adjusting plate (24), the pushing and pulling screw (23) is sleeved with a pushing and pulling block (26), the pushing and pulling block (26) is provided with an inclined surface structure, and the inclined surface structure is arranged corresponding to the bearing (25), the adjusting plate (24) is provided with an adjusting groove (241), and part of the pushing and pulling block (26) and the bearing (25) are located in the adjusting groove (241).

9. The gripping mechanism according to claim 8, characterized in that: A fixing block (37) is fixedly mounted on one end of the piston rod (31) away from the clamping plate (33), and a receiving groove is provided on one side of the adjustment plate (24) away from the adjustment groove (241), and the fixing block (37) is at least partially located in the receiving groove.

10. A soft-pack lithium battery cell formation automated production equipment, characterized in that: Comprising a gripping mechanism as described in any one of claims 1-9.

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