Tab gathering equipment

Abstract

The utility model discloses tab folding equipment which comprises a pair of folding units, and each folding unit comprises a feeding device and a folding device. The feeding device comprises a first servo electric cylinder, a feeding device base and a base connecting piece; the furling device comprises a furling device base, a second servo electric cylinder arranged on the furling device base, and a pressure head assembly connecting piece in driving connection with the second servo electric cylinder; the folding device base is connected to the base connecting piece; the first servo electric cylinder is in driving connection with the folding device base; guide shaft fixing pieces are arranged on the two sides of the second servo electric cylinder, guide shafts are arranged on the guide shaft fixing pieces, guide shaft seats are arranged on the pressing head assembly connecting piece, and the guide shafts are arranged in the guide shaft seats in a penetrating mode; the concentricity adjusting part is arranged on the gathering device base, the pressure head assembly is arranged between the concentricity adjusting part and the pressure head assembly connecting part, the battery tabs are accurately and orderly stacked and gathered layer by layer through the pressure head assembly, the gathering forming precision of the battery tabs is high, and the gathering guide of the tabs is consistent.

Description

Technical Field

[0001] This patent belongs to the field of battery manufacturing equipment technology, specifically relating to a tab retraction device. Background Technology

[0002] In the battery manufacturing process, the battery tabs need to be flattened and gathered. Currently, mechanical rotation friction or ultrasonic vibration are commonly used to flatten and gather the battery tabs. However, during the rotation friction or ultrasonic vibration process, the tabs are prone to generating debris, which can easily lead to battery defects. In view of the above problems, there is an urgent need to develop a new type of tab gathering equipment. Utility Model Content

[0003] The purpose of this patent is to overcome the shortcomings of the prior art and provide a tab gathering device that solves the problem of tab debris generation caused by the prior art. At the same time, the structure is simple, the tab gathering and forming accuracy is high, and the tab gathering and guiding are consistent, which is beneficial to improving battery quality.

[0004] To achieve the above objectives, this patent adopts the following technical solution: a battery tab retraction device, comprising a pair of retraction units, each retraction unit including a feeding device and a retraction device; specifically, the battery tab to be retracted is placed between the pair of retraction devices; the feeding device includes a first servo cylinder, a feeding device base, and a base connector; a slide rail is provided on the feeding device base, and a slider is provided under the base connector, the slider being slidably connected to the slide rail; the retraction device is disposed on the base connector, and the first servo cylinder is driven to drive the retraction device; the first servo cylinder drives the retraction device to move along the slide rail with the slider, thereby driving the corresponding retraction device to move towards or away from the battery in the middle along the slide rail with the slider via the two opposing feeding devices.

[0005] Specifically, the gathering device in this technical solution includes a gathering device base, a second servo cylinder mounted on the gathering device base, and a pressure head assembly connector driven and connected to the second servo cylinder. The gathering device base is connected to the base connector. The first servo cylinder is driven and connected to the gathering device base, thereby driving the corresponding gathering device base through two opposing first servo cylinders to move the entire gathering device along the slide rail towards or away from the battery in the middle. Guide shaft fixing members are provided on both sides of the second servo cylinder, and guide shafts are provided on the guide shaft fixing members. Guide shaft seats are provided on the pressure head assembly connector, and the guide shafts pass through the guide shaft seats. A concentricity adjustment member is provided on the gathering device base, and a pressure head assembly is provided between the concentricity adjustment member and the pressure head assembly connector. The pressure head assembly is used to gather the battery tabs. Thus, the second servo cylinder drives the pressure head assembly connector to move the pressure head assembly along the guide shaft.

[0006] Furthermore, the pressure head assembly in this technical solution includes a push plate, a first pin, a second pin, and a pressure head assembly seat. The push plate is connected to the pressure head assembly connector. The push plate has at least one first pin seat, and the first pin seat is connected to a first connecting rod via the first pin. The first connecting rod has a second pin seat, and the second pin seat is connected to a second connecting rod via the second pin. The second connecting rod has a connecting part and a pressure head. The pressure head assembly seat is provided with at least one rotating shaft, and the second connecting rod is rotatably connected to the rotating shaft. The second servo electric cylinder drives the pressure head assembly connector to move the push plate, and then the push plate sequentially drives the first connecting rod and the second connecting rod to move with the first pin and the second pin, respectively. Finally, the second connecting rod is driven to move with the rotating shaft. Specifically, the second servo electric cylinder drives the pressure head assembly connector to move the push plate towards the middle battery, and then the push plate sequentially drives the first connecting rod and the second connecting rod to move with the first pin and the second pin, respectively. The connecting rods move with the first and second pins respectively, and finally drive the second connecting rod to move with the rotation axis. The pressing head of the second connecting rod moves away from the middle battery. The second servo electric cylinder drives the pressing head assembly connector to move the push plate away from the middle battery. Then, the push plate sequentially drives the first and second connecting rods to move with the first and second pins respectively. Finally, the second connecting rod moves with the rotation axis, and the pressing head of the second connecting rod presses against the middle battery. In this way, the electrodes of the middle battery are stacked and gathered layer by layer through the pressing head of at least one second connecting rod. The electrode gathering and forming accuracy is high and the electrode gathering guidance is consistent, which is beneficial to improving battery quality. The number of second connecting rods and the shape of their pressing heads can be adjusted according to the production process requirements. The equipment has high scalability and a simple structure. It solves the problem that the electrode fragments are easily generated by the existing technology of rotational friction or ultrasonic vibration.

[0007] Furthermore, the concentricity adjusting component described in this technical solution has a concentricity adjusting component opening for accommodating the battery. Thus, two opposing first servo electric cylinders drive the corresponding gathering device base to move the entire gathering device along the slide rail towards the battery in the middle. As a result, the concentricity adjusting component opening on the gathering device base corresponds to the battery, and the battery is accommodated in the corresponding concentricity adjusting component opening.

[0008] Furthermore, the pressure head assembly seat described in this technical solution has a pressure head assembly seat opening corresponding to the concentricity adjustment member opening, thereby the pressure head assembly corresponds to the battery accommodated in the corresponding concentricity adjustment member opening.

[0009] Furthermore, the pressure head assembly seat in this technical solution is provided with a center pin seat, and a center pin is provided on the center pin seat. The center pin corresponds to the opening of the pressure head assembly seat. The center pin is used to correspond with the center of the battery in the corresponding concentricity adjustment component opening. The center pin is inserted into the center of the battery, which can effectively protect the center of the battery and achieve precise positioning.

[0010] The tab gathering device provided by this patent has the following advantages: Two opposing feeding devices drive the corresponding gathering devices to move along the slide rail towards the central battery. A second servo cylinder drives the pressure head assembly connector to move the push plate away from the central battery. The push plate then sequentially drives the first and second connecting rods to move with the first and second pins respectively. Finally, the second connecting rod moves with the rotation axis, and the pressure head of the second connecting rod presses against the central battery. Thus, the pressure head of at least one second connecting rod precisely and orderly stacks and gathers the tabs of the central battery layer by layer. This results in high precision in tab gathering and consistent guidance, improving battery quality. The number of second connecting rods and the shape of their pressure heads can be adjusted according to production process requirements, making the device highly scalable and simple in structure. It solves the problem of existing technologies using rotational friction or ultrasonic vibration that easily leads to tab debris. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this patent, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this patent. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0012] Figure 1 This is a schematic diagram of the structure of a tab retraction device disclosed in an embodiment of this patent;

[0013] Figure 2 This is a schematic diagram of the structure of the gathering unit in the electrode gathering device disclosed in the embodiments of this patent;

[0014] Figure 3 This is a schematic diagram of the pressure head assembly of the gathering unit in an electrode gathering device disclosed in this patent embodiment;

[0015] Figure 4 This is a cross-sectional structural diagram of the pressure head assembly of the gathering unit in an electrode gathering device disclosed in this patent embodiment;

[0016] Explanation of the numbers in the diagram: 1-Gathering unit, 2-Feeding device, 201-First servo electric cylinder, 202-Feeding device base, 203-Slide rail, 204-Slider, 205-Base connector, 3-Gathering device, 301-Gathering device base, 302-Second servo electric cylinder, 303-Guide shaft fixing component, 304-Pressure head assembly connector, 305-Guide shaft seat, 306-Guide shaft, 307-Pressure head assembly, 3071-Push plate, 3072- 30721 - Press head assembly seat opening; 3073 - Center pin seat; 3074 - Center pin; 3075 - First pin seat; 3076 - First pin; 3077 - First connecting rod; 3078 - Second pin seat; 3079 - Second pin; 30710 - Second connecting rod; 307101 - Connecting part; 307102 - Press head; 30711 - Rotating shaft; 308 - Concentricity adjusting component; 3081 - Concentricity adjusting component opening. Detailed Implementation

[0017] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0018] See Figure 1-4 This patent discloses a tab-gathering device, including a pair of gathering units 1, each gathering unit 1 including a feeding device 2 and a gathering device 3. Specifically, in this embodiment, the battery tab to be gathered is placed between the pair of gathering devices 3. The feeding device 2 includes a first servo cylinder 201, a feeding device base 202, and a base connector 205. A slide rail 203 is provided on the feeding device base 202, and a slider 204 is provided under the base connector 205, with the slider 204 slidably connected to the slide rail 203. The gathering device 3 is disposed on the base connector 205, and the first servo cylinder 201 is driven to the gathering device 3. The specific working principle and implementation method is that the first servo cylinder 201 drives the gathering device 3 to move along the slide rail 203 with the slider 204, thereby driving the corresponding gathering device 3 to move towards or away from the battery in the middle along the slide rail 203 with the slider 204 via the two opposing feeding devices 2.

[0019] For details, see Figure 2In this embodiment, the gathering device 3 includes a gathering device base 301, a second servo electric cylinder 302 mounted on the gathering device base 301, and a pressure head assembly connector 304 driven and connected to the second servo electric cylinder 302. The gathering device base 301 is connected to the base connector 205. The first servo electric cylinder 201 is driven and connected to the gathering device base 301, thereby driving the corresponding gathering device base 301 through two opposing first servo electric cylinders 201 to move the entire gathering device 3 along the slide rail 203 towards or away from the battery in the middle, along with the slider 204. The second servo electric cylinder 304... 02. Guide shaft fixing parts 303 are provided on both sides, and guide shaft 306 is provided on the guide shaft fixing parts 303. Guide shaft seat 305 is provided on the pressure head assembly connector 304, and guide shaft 306 passes through the guide shaft seat 305. Concentricity adjusting part 308 is provided on the base 301 of the gathering device. Pressure head assembly 307 is provided between the concentricity adjusting part 308 and the pressure head assembly connector 304. Pressure head assembly 307 is used to gather the battery tabs. Thus, the second servo electric cylinder 302 drives the pressure head assembly connector 304 to drive the pressure head assembly 307 to move along the guide shaft 306.

[0020] Further, see Figure 2-4In this embodiment, the pressure head assembly 307 includes a push plate 3071, a first pin 3076, a second pin 3079, and a pressure head assembly seat 3072. The push plate 3071 is connected to the pressure head assembly connector 304. The push plate 3071 has at least one first pin seat 3075. The first pin seat 3075 is connected to a first connecting rod 3077 via the first pin 3076. The first connecting rod 3077 has a second pin seat 3078. The second pin seat 3078 is connected to a second connecting rod 30710 via the second pin 3079. The second connecting rod 30710 has a connecting portion 307101 and a pressure head 307102. The pressure head assembly base 3072 is provided with at least one rotating shaft 30711, and the second connecting rod 30710 is rotatably connected to the rotating shaft 30711. The second servo electric cylinder 302 drives the pressure head assembly connector 304 to move the push plate 3071. Then, the push plate 3071 sequentially drives the first connecting rod 3077 and the second connecting rod 30710 to move with the first pin 3076 and the second pin 3079 respectively. Finally, the second connecting rod 30710 is driven to move with the rotating shaft 30711. Specifically, the working principle and implementation method are as follows: the second servo electric cylinder 302 drives the pressure head assembly connector 304 to move the push plate 3071 closer to the center... The push plate 3071 drives the first connecting rod 3077 and the second connecting rod 30710 to move with the first pin 3076 and the second pin 3079 respectively via the push plate 3071. Finally, the second connecting rod 30710 is driven to move with the rotating shaft 30711, and the pressing head 307102 of the second connecting rod 30710 moves away from the middle battery. The second servo cylinder 302 drives the pressing head assembly connector 304 to drive the push plate 3071 to move away from the middle battery. Then, the push plate 3071 drives the first connecting rod 3077 and the second connecting rod 30710 to move with the first pin 3076 and the second pin 3079 respectively. 9. The movement finally drives the second connecting rod 30710 to move with the rotating shaft 30711. The pressing head 307102 of the second connecting rod 30710 presses against the middle battery. Thus, the electrodes of the middle battery are stacked and gathered layer by layer through the pressing head 307102 of at least one second connecting rod 30710. The electrode gathering and forming accuracy is high and the electrode gathering guidance is consistent, which is beneficial to improving battery quality. The number of second connecting rods and the shape of their pressing heads can be adjusted according to the production process requirements. The equipment has high scalability and simple structure. It solves the problem that the electrode fragments are easily generated by the existing technology of rotational friction or ultrasonic vibration.

[0021] Further, see Figure 2In this embodiment, the concentricity adjusting member 308 has a concentricity adjusting member opening 3081 for accommodating the battery. The size and shape of the concentricity adjusting member opening can be adjusted according to the production process requirements. Thus, the corresponding gathering device base 301 is driven by two opposing first servo electric cylinders 201 to drive the gathering device 3 as a whole to move along the slide rail 203 towards the battery in the middle with the slider 204. Thus, the opening of the concentricity adjusting member 3081 on the gathering device base 301 corresponds to the battery, and the battery is accommodated in the corresponding concentricity adjusting member opening 3081.

[0022] Further, see Figure 2-4 In this embodiment, the pressure head assembly seat 3072 has a pressure head assembly seat opening 30721 corresponding to the concentricity adjustment member opening 3081. The size and shape of the pressure head assembly seat opening can be adjusted according to the production process requirements. Thus, the pressure head assembly 307 corresponds to the battery contained in the corresponding concentricity adjustment member opening 3081, and then the battery tabs are gathered by the pressure head assembly 307.

[0023] Further, see Figure 2-4 In this embodiment, the pressure head assembly seat 3072 is provided with a center pin seat 3073, and the center pin seat 3073 is provided with a center pin 3074. The center pin 3074 corresponds to the opening 30721 of the pressure head assembly seat. The size and shape of the center pin can be adjusted according to the production process requirements. The center pin 3074 is used to correspond to the center of the battery in the corresponding concentricity adjustment component opening 3081. The center pin is inserted into the center of the battery, which can effectively protect the center of the battery and achieve precise positioning.

[0024] The tab gathering device provided in the above embodiment drives the corresponding gathering device along the slide rail with the slider to move towards the middle battery through two opposing feeding devices. Then, the second servo electric cylinder drives the pressure head assembly connector to move the push plate away from the middle battery. Then, the push plate drives the first connecting rod and the second connecting rod to move with the first pin and the second pin respectively. Finally, the second connecting rod is driven to move with the rotation axis. The pressure head of the second connecting rod presses against the middle battery. Thus, the tabs of the middle battery are accurately stacked and gathered layer by layer through the pressure head of at least one second connecting rod. The battery tab gathering and forming accuracy is high and the battery tab gathering guidance is consistent, which is beneficial to improving battery quality. The number of second connecting rods and the shape of their pressure heads can be adjusted according to the production process requirements. The equipment has high scalability and simple structure, which solves the problem that the existing technology of using rotational friction or ultrasonic vibration can easily cause the tabs to generate debris.

[0025] The above description is merely an embodiment of this patent and does not limit the scope of this patent. Any equivalent structural or procedural transformations made using the contents of this patent specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this patent.

Claims

1. A tab retraction device, comprising a pair of retraction units (1), each retraction unit (1) comprising a feeding device (2) and a retraction device (3); the feeding device (2) comprising a first servo cylinder (201), a feeding device base (202), and a base connector (205); a slide rail (203) is provided on the feeding device base (202), and a slider (204) is provided under the base connector (205), the slider (204) being slidably connected to the slide rail (203); the retraction device (3) is disposed on the base connector (205), and the first servo cylinder (201) is driven to connect with the retraction device (3); the first servo cylinder (201) drives the retraction device (3) to move along the slide rail (203) with the slider (204); characterized in that: The gathering device (3) includes a gathering device base (301), a second servo electric cylinder (302) mounted on the gathering device base (301), and a pressure head assembly connector (304) driven and connected to the second servo electric cylinder (302); the gathering device base (301) is connected to the base connector (205); the first servo electric cylinder (201) is driven and connected to the gathering device base (301); guide shaft fixing members (303) are provided on both sides of the second servo electric cylinder (302), and the guide shaft fixing members (303) A guide shaft (306) is provided on the top, and a guide shaft seat (305) is provided on the pressure head assembly connector (304), with the guide shaft (306) passing through the guide shaft seat (305); a concentricity adjustment component (308) is provided on the base (301) of the gathering device, and a pressure head assembly (307) is provided between the concentricity adjustment component (308) and the pressure head assembly connector (304); the pressure head assembly connector (304) is driven by the second servo electric cylinder (302) to drive the pressure head assembly (307) to move along the guide shaft (306).

2. The electrode retraction device according to claim 1, characterized in that: The pressure head assembly (307) includes a push plate (3071), a first pin (3076), a second pin (3079), and a pressure head assembly seat (3072). The push plate (3071) is connected to the pressure head assembly connector (304). The push plate (3071) has at least one first pin seat (3075). The first pin seat (3075) is connected to a first connecting rod (3077) via the first pin (3076). The first connecting rod (3077) has a second pin seat (3078). The second pin seat (3078) is connected to a second connecting rod (30710) via the second pin (3079). The second connecting rod (30710) It has a connecting part (307101) and a pressing head (307102); the pressing head assembly seat (3072) is provided with at least one rotating shaft (30711), and the second connecting rod (30710) is rotatably connected to the rotating shaft (30711); the pressing head assembly connector (304) is driven by the second servo electric cylinder (302) to drive the push plate (3071) to move, and then the push plate (3071) sequentially drives the first connecting rod (3077) and the second connecting rod (30710) to move with the first pin (3076) and the second pin (3079) respectively, and finally drives the second connecting rod (30710) to move with the rotating shaft (30711).

3. The electrode retraction device according to claim 2, characterized in that: The concentricity adjustment member (308) has a concentricity adjustment member opening (3081).

4. The electrode retraction device according to claim 3, characterized in that: The pressure head assembly seat (3072) has a pressure head assembly seat opening (30721) corresponding to the concentricity adjustment member opening (3081).

5. The electrode retraction device according to claim 4, characterized in that: The pressure head assembly seat (3072) is provided with a center needle seat (3073), and a center needle (3074) is provided on the center needle seat (3073). The center needle (3074) corresponds to the opening (30721) of the pressure head assembly seat.

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