Mould and processing equipment for multi-layer stacked metal flexible connection

Abstract

The utility model provides a multi-layer stacked metal flexible connection mould and processing equipment, comprising: a mould body, which comprises at least two graphite plates, two adjacent graphite plates are stacked and a processing space is formed between the two graphite plates, and the processing space is used for accommodating the metal flexible connection; the two opposite sides of the graphite plate are respectively provided with a machining face, and each machining face is divided into a pressure welding area and a sinking area. When the metal flexible connector is placed in the processing space, the pressure welding area of the graphite plate is in contact with the metal flexible connector and applies pressure to the metal flexible connector, and the sinking area of the graphite plate is not in contact with the metal flexible connector; when more metal flexible connections need to be subjected to pressure welding, only the number of the graphite plates needs to be increased, the metal flexible connections are placed in the machining space, and then the whole die body is subjected to pressure welding, so that the multiple metal flexible connections are subjected to pressure welding treatment in one-time pressure welding operation, and the productivity is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of metal flexible connectors, specifically relating to a mold and processing equipment for a multi-layer stacked metal flexible connector. Background Technology

[0002] Copper strip flexible connectors (flexible copper busbars) refer to conductive components made of multiple layers of copper strips stacked together and welded together at both ends or designated local locations. Mounting holes are then machined at the weld locations to connect two devices requiring conductive connection, enabling high current flow. The intermediate transition sections are not welded, providing excellent flexibility and achieving conductivity, flexibility, and shock resistance. Copper strip flexible connectors are widely used in the power and new energy electric vehicle industries because they are applied in battery packs and other applications requiring flexible high-current conduction within the vehicle.

[0003] Currently, resistance welding machines are commonly used to weld copper strip flexible connectors, such as the copper strip flexible connector welding device described in Chinese patent CN201621049834.2. This device is equipped with upper and lower graphite electrodes and welds the parts of the product that need to be pressed together in an open air environment. However, when the graphite electrodes are exposed to air during welding, they undergo oxidation and wear, resulting in a short lifespan. Significant oxidation occurs within tens of minutes to several hours, affecting weld quality and requiring electrode replacement. This increases the uncertainty of product quality stability and represents a significant consumable cost in the production process. Furthermore, current manual or robotic welding typically welds one or two pieces at a time, resulting in a daily production capacity of only a few hundred or a couple of thousand pieces – low capacity that cannot meet market demand. Utility Model Content

[0004] To overcome the aforementioned technical deficiencies, this utility model provides a mold and processing equipment for multi-layer stacked metal flexible connections, which can solve the problems of how to improve production capacity, quality, and stability in the background art.

[0005] This utility model is implemented according to the following technical solution:

[0006] This utility model provides a mold for a multi-layer stacked metal flexible connection, comprising:

[0007] The mold body includes at least two graphite plates, with two adjacent graphite plates stacked together to form a processing space between them. The processing space is used to accommodate a flexible metal connection. Each graphite plate has a processing surface on its opposite sides, and the processing surface is divided into a pressure welding area and a recessed area.

[0008] When the flexible metal connector is placed in the processing space, the welding area of ​​the graphite plate contacts the flexible metal connector and applies pressure to it, while the recessed area of ​​the graphite plate does not contact the flexible metal connector.

[0009] Compared with the prior art, this application fixes the flexible metal connector in the processing space between two graphite plates of the mold body, using the two graphite plates to fix the flexible metal connector for subsequent pressure welding. When more flexible metal connectors need to be pressure welded, it is only necessary to increase the number of graphite plates and place the flexible metal connectors in the processing space, and then pressure weld the entire mold body. This allows multiple flexible metal connectors to be pressure welded in one operation, thereby increasing production capacity.

[0010] In one embodiment, the processing surface is provided with a positioning mechanism, which engages with the metal flexible connection for limiting.

[0011] In one embodiment, the positioning mechanism includes a positioning post and / or a positioning groove and / or a positioning block.

[0012] In one embodiment, the positioning mechanism is a positioning post, which is disposed on the processing surface of one of the graphite plates;

[0013] Another graphite plate has a positioning hole correspondingly provided on the pressure welding area of ​​the machined surface;

[0014] When two adjacent graphite plates are stacked, one end of the positioning post is inserted into the positioning hole and has a movable margin between it and the end of the positioning hole.

[0015] In one embodiment, the pressure welding area is divided into a square pressure welding area and a triangular pressure welding area, and the positioning mechanism is provided on the square pressure welding area; a recessed area is provided between the square pressure welding area and the triangular pressure welding area.

[0016] The processing surface is provided with multiple processing positions, and each processing position corresponds to a metal flexible connection.

[0017] In one embodiment, every two processing stations form a processing station group;

[0018] On the same set of processing stations, the square pressure welding area is provided with two positioning mechanisms. One of the two positioning mechanisms is matched with the first end of one of the metal flexible connectors, and the other is matched with the last end of the other metal flexible connector.

[0019] In one embodiment, the processing surface is provided with multiple processing station groups, and adjacent square pressure welding areas of two adjacent processing station groups are connected.

[0020] This utility model also provides a processing device for multi-layer stacked metal flexible connections, which includes:

[0021] The enclosure contains a cavity, which is either a vacuum environment or filled with a protective gas.

[0022] The mold for the multi-layered stacked metal flexible connections described above is placed inside the cavity;

[0023] And a pressure welding device, which is used to pressure weld the mold of the multi-layer stacked metal flexible connection; wherein,

[0024] The pressure welding device includes a hydraulic cylinder, a movable plate, a conductive copper column, an upper electrode copper plate, and a lower electrode copper plate; the hydraulic cylinder and the movable plate are disposed outside the cavity, and the upper electrode copper plate and the lower electrode copper plate are disposed inside the cavity; the hydraulic cylinder is drivenly connected to the movable plate, and the movable plate is connected to the upper electrode copper plate through the conductive copper column.

[0025] In one embodiment, the pressure welding device further includes an upper graphite pad and a lower graphite pad, the upper graphite pad being disposed on one side of the upper electrode copper plate facing the mold body, and the lower graphite pad being disposed on one side of the lower electrode copper plate facing the mold body. Attached Figure Description

[0026] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a perspective view of a mold for a multi-layered stacked metal flexible connector according to Embodiment 1 of this utility model.

[0028] Figure 2 This is a cross-sectional view of the mold for the multi-layer stacked metal flexible connection of Embodiment 1 of this utility model;

[0029] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0030] Figure 4 This is a schematic diagram of the graphite plate and the flexible metal connection in Embodiment 1 of this utility model;

[0031] Figure 5 This is a schematic diagram of the graphite plate component according to Embodiment 1 of this utility model;

[0032] Figure 6 This is a schematic diagram of a processing device for multi-layer stacked metal flexible connections according to Embodiment 1 of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10 Mold body, 110 Graphite plate, 111 Pressure welding area, 1111 Positioning pin, 1112 Positioning hole, 111a Square pressure welding area, 111b Triangular pressure welding area, 112 Recessed area, 113 Machining space, 20 Flexible metal connection, 30 Housing, 310 Cavity, 410 Hydraulic cylinder, 420 Movable plate, 430 Conductive copper pillar, 440 Upper electrode copper plate, 450 Lower electrode copper plate, 460 Upper graphite pad, 470 Lower graphite pad Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0037] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0038] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0039] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0041] Example 1

[0042] Combination Figures 1 to 5 As shown, this utility model provides a mold for a multi-layer stacked metal flexible connector 20, which includes: a mold body 10, which includes at least two graphite plates 110, two adjacent graphite plates 110 are stacked and a processing space 113 is formed between the two graphite plates 110, the processing space 113 is used to accommodate the metal flexible connector 20; wherein, the opposite sides of the graphite plates 110 are respectively provided with processing surfaces, and the processing surfaces are divided into a pressure welding area 111 and a recessed area 112; when the metal flexible connector 20 is placed in the processing space 113, the pressure welding area 111 of the graphite plates 110 contacts the metal flexible connector 20 and applies pressure to the metal flexible connector 20, and the recessed area 112 of the graphite plates 110 does not contact the metal flexible connector 20.

[0043] Specifically, to improve productivity during a single pressure welding operation, this embodiment specifically developed a mold capable of accommodating multiple flexible metal connectors 20. The mold body 10 includes at least two graphite plates 110, the number of which depends on the number of flexible metal connectors 20. When the flexible metal connectors 20 are placed within the processing space 113, the pressure welding area 111 of the graphite plate 110 contacts the flexible metal connector 20 and applies pressure to it under the action of the pressure welding device, thus achieving pressure welding. Meanwhile, the recessed area 112 of the graphite plate 110 does not contact the flexible metal connector 20, ensuring that the portion of the flexible metal connector 20 corresponding to the recessed area 112 is flexible.

[0044] When it is necessary to perform pressure welding on a set of metal flexible connections 20, the first set of metal flexible connections 20 is placed on the processing surface of the first graphite plate 110, and then the second graphite plate 110 is placed on the first graphite plate 110 to fix the first set of metal flexible connections 20 in the processing space 113 between the second graphite plate 110 and the first graphite plate 110, thus obtaining a mold body 10 containing the metal flexible connections 20. At this time, the mold body 10 containing the metal flexible connections 20 is placed in the cavity 310 of the processing equipment, and the cavity 310 is subjected to vacuum treatment or filled with protective gas treatment. The pressure welding device performs pressure welding on the mold body 10 in the cavity 310. Since the graphite electrodes of the mold body 10 and the pressure welding device are pressure welded within the cavity 310, and are encased in a vacuum environment or a protective gas, the oxidation rate of the graphite plate 110 and the graphite electrodes is slowed down, or even eliminated, thereby reducing the cost of using graphite. Furthermore, the stable operation of the graphite electrodes improves the product quality of the metal flexible connector 20 and increases its stability, meeting market demands.

[0045] When n sets of flexible metal connectors 20 need to be pressure welded, the nth set of flexible metal connectors 20 is placed on the processing surface of the nth graphite plate 110; then the (n+1)th graphite plate 110 is placed on top of the nth graphite plate 110 to fix the nth set of flexible metal connectors 20 in the processing space 113 between the (n+1)th graphite plate 110 and the nth graphite plate 110, resulting in a mold body 10 containing the flexible metal connectors 20; where n is a positive integer. The mold body 10 containing the flexible metal connectors 20 is then placed into the cavity 310 of the processing equipment, and the cavity 310 is either evacuated or filled with a protective gas. The pressure welding device then performs pressure welding on the mold body 10 within the cavity 310. Since more flexible metal connectors 20 can be assembled within the mold body 10 by increasing the number of graphite plates 110, production capacity is effectively increased to meet market demand.

[0046] Compared with the prior art, this application fixes the metal flexible connection 20 in the processing space 113 between two graphite plates 110 of the mold body 10, and uses the two graphite plates 110 to fix the metal flexible connection 20 for subsequent pressure welding. When more metal flexible connections 20 need to be pressure welded, it is only necessary to increase the number of graphite plates 110 and place the metal flexible connection 20 in the processing space 113, and then pressure weld the entire mold body 10. This allows multiple metal flexible connections 20 to be pressure welded in one operation, thereby increasing production capacity.

[0047] In this embodiment, the processing surface is provided with a positioning mechanism. Taking the welding area 111 as an example, the positioning mechanism is matched with the metal flexible connection 20 to limit the position of the metal flexible connection 20 and prevent the metal flexible connection 20 from shifting during the welding process.

[0048] Furthermore, the positioning mechanism includes a positioning post 1111 and / or a positioning groove and / or a positioning block. In this embodiment, when multiple graphite plates 110 are arranged in a stacked manner from top to bottom, the upper surface of the graphite plate 110 is provided with a positioning post 1111, which matches the connection through hole designed on the metal flexible connection 20 itself; by passing the positioning post 1111 through the connection through hole, the metal flexible connection 20 can be limited.

[0049] To achieve the positioning of two adjacent graphite plates 110, the positioning post 1111 is further provided on the pressure welding area 111 of the machined surface of one of the graphite plates 110; a positioning hole 1112 is correspondingly provided on the pressure welding area 111 of the machined surface of the other graphite plate 110; when the two adjacent graphite plates 110 are stacked, one end of the positioning post 1111 passes through the connecting through hole of the metal flexible connector 20 and is inserted into the positioning hole 1112, and there is a movable margin between it and the end of the positioning hole 1112. The movable margin is used to allow the upper graphite plate 110 to move downward under pressure, so as to avoid damaging the positioning post 1111 during the pressure welding process.

[0050] In this embodiment, the pressure welding area 111 is divided into a square pressure welding area 111a and a triangular pressure welding area 111b. The positioning mechanism is provided on the square pressure welding area 111a. The recessed area 112 is provided between the square pressure welding area 111a and the triangular pressure welding area 111b. Multiple processing positions are provided on the processing surface, and each processing position corresponds to a metal flexible connection 20, so that multiple metal flexible connections 20 can be processed directly on two adjacent graphite plates 110.

[0051] In this embodiment, every two processing positions form a processing station group. Within the same processing station group, the square welding area 111a is equipped with two positioning mechanisms. One of the positioning mechanisms engages with the leading end of one of the flexible metal connectors 20, and the other engages with the trailing end of the other flexible metal connector 20. This allows for efficient utilization of the layout of the square welding area 111a and the triangular welding area 111b on the processing surface, maximizing the placement of more flexible metal connectors 20 within a limited space and increasing production capacity. Furthermore, by engaging the leading and trailing ends of the flexible metal connectors 20, their positions are better secured.

[0052] Furthermore, the processing surface is provided with multiple processing station groups, and the adjacent square pressure welding areas 111a of two adjacent processing station groups are connected, so as to increase the number of metal flexible connections 20 on the same processing surface and improve production capacity.

[0053] Example 2

[0054] Combination Figures 1 to 6 As shown, this utility model also provides a processing device for multi-layer stacked metal flexible connectors 20, comprising: a housing 30, wherein the housing 30 has a cavity 310, the cavity 310 being a vacuum environment or filled with a protective gas; a mold for the multi-layer stacked metal flexible connectors 20 as described above, which is placed in the cavity 310; and a pressure welding device for performing pressure welding on the mold for the multi-layer stacked metal flexible connectors 20; wherein,

[0055] The pressure welding device includes a hydraulic cylinder 410, a movable plate 420, a conductive copper pillar 430, an upper electrode copper plate 440, and a lower electrode copper plate 450. The hydraulic cylinder 410 and the movable plate 420 are disposed outside the cavity 310, while the upper electrode copper plate 440 and the lower electrode copper plate 450 are disposed inside the cavity 310. An upper graphite pad 460 is disposed on one side of the upper electrode copper plate 440 facing the mold body 10, and a lower graphite pad 470 is disposed on one side of the lower electrode copper plate 450 facing the mold body 10. The hydraulic cylinder is drivenly connected to the movable plate 420, and the movable plate 420 is connected to the upper electrode copper plate 440 through the conductive copper pillar 430.

[0056] Specifically, the mold body 10, equipped with the metal flexible connector 20, is placed into the cavity 310. The cavity 310 is either evacuated or filled with a protective gas to create a vacuum environment or to protect the graphite plate 110 of the mold body 10 and the graphite electrodes of the pressure welding device (the combination of the upper electrode copper plate 440 and the upper graphite pad 460, and the combination of the lower electrode copper plate 450 and the lower graphite pad 470) from graphite oxidation. The hydraulic cylinder drives the movable plate 420 to move downward, which in turn drives the upper electrode copper plate 440 to move downward via the conductive copper pillar 430, cooperating with the lower electrode copper plate 450 and the lower graphite pad 470 to perform pressure welding on the mold body 10.

[0057] In one embodiment, the pressure welding device further includes an upper graphite pad 460 and a lower graphite pad 470, the upper graphite pad 460 being disposed on one side of the upper electrode copper plate 440 facing the mold body, and the lower graphite pad 470 being disposed on one side of the lower electrode copper plate 450 facing the mold body.

[0058] It should be noted that the upper graphite pad 460 and the lower graphite pad 470 can make the heat from the upper electrode copper plate 440 and the lower electrode copper plate 450 more uniform, thereby better welding the mold body 10 and avoiding excessive local temperature.

[0059] Example 3

[0060] This utility model also provides a method for processing multi-layer stacked metal flexible connections, which uses the processing equipment for multi-layer stacked metal flexible connections 20 as described above. The method includes:

[0061] S11: Place the first group of metal flexible connectors 20 on the machined surface of the first graphite plate 110;

[0062] S12: Place the second graphite plate 110 on the first graphite plate 110 to fix the first set of metal flexible connections 20 in the processing space 113 between the second graphite plate 110 and the first graphite plate 110.

[0063] S13: When n sets of flexible metal connectors 20 need to be pressure welded, the nth set of flexible metal connectors 20 is placed on the processing surface of the nth graphite plate 110; then the (n+1)th graphite plate 110 is placed on top of the nth graphite plate 110 to fix the nth set of flexible metal connectors 20 in the processing space 113 between the (n+1)th graphite plate 110 and the nth graphite plate 110, thus obtaining a mold body 10 containing the flexible metal connectors 20; where n is a positive integer. By increasing the number of graphite plates 110, more flexible metal connectors 20 can be assembled, thereby effectively increasing production and meeting market demand.

[0064] S20: Place the mold body 10 equipped with the metal flexible connector 20 into the cavity 310;

[0065] S30: The cavity 310 is subjected to vacuum treatment or filled with protective gas treatment, and the pressure welding device performs pressure welding treatment on the mold body 10. Since the mold body 10 and the graphite electrode of the pressure welding device are pressure welded in the cavity 310, and are surrounded by a vacuum environment or protective gas, the oxidation rate of the graphite plate 110 and the graphite electrode is slowed down, or even eliminated, thereby reducing the cost of using graphite. Moreover, the stable operation of the graphite electrode can improve the product quality of the metal flexible connection 20 and increase its stability, meeting market demands.

[0066] The mold, processing equipment, and processing method for a multi-layer stacked metal flexible connection of this utility model have the following advantages:

[0067] 1. Pressure welding in a protective gas atmosphere results in a good product appearance with little or no oxidation, significantly reducing the amount of grinding required, and some products may even require no grinding at all; moreover, the graphite oxidation rate is extremely slow, greatly extending its lifespan.

[0068] 2. The single-piece operation mode has been eliminated, and tooling has replaced worker skills, eliminating the need for skilled workers; management is convenient, with only one engineer managing a welding workshop, and production is completely independent of technicians. There is no need to frequently change graphite or frequently inspect products, while ensuring a higher pass rate.

[0069] 3. Good stability: With the same parameters and the same pressure welding equipment, it can maintain a very high degree of consistency during continuous operation. The dimensional tolerances and appearance can exceed customer requirements.

[0070] 4. Simpler production process, lower labor costs, lower graphite loss, more refined products, higher cost performance, and increased market advantage.

[0071] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A mold for a multi-layer stacked metal flexible connection, characterized in that, include: The mold body includes at least two graphite plates, with two adjacent graphite plates stacked together to form a processing space between them. The processing space is used to accommodate a flexible metal connection. Each graphite plate has a processing surface on its opposite sides, and the processing surface is divided into a pressure welding area and a recessed area. When the flexible metal connector is placed in the processing space, the welding area of ​​the graphite plate contacts the flexible metal connector and applies pressure to it, while the recessed area of ​​the graphite plate does not contact the flexible metal connector.

2. The mold for multi-layer stacked metal flexible connections according to claim 1, characterized in that: The processing surface is provided with a positioning mechanism, which is matched with the metal flexible connection for limiting.

3. The mold for multi-layer stacked metal flexible connections according to claim 2, characterized in that: The positioning mechanism includes a positioning column and / or a positioning groove and / or a positioning block.

4. The mold for multi-layer stacked metal flexible connections according to claim 3, characterized in that: The positioning mechanism is a positioning column, which is disposed on the processing surface of one of the graphite plates; Another graphite plate has a positioning hole correspondingly provided on the pressure welding area of ​​the machined surface; When two adjacent graphite plates are stacked, one end of the positioning post is inserted into the positioning hole and has a movable margin between it and the end of the positioning hole.

5. The mold for a multi-layer stacked metal flexible connection according to any one of claims 2-4, characterized in that: The pressure welding area is divided into a square pressure welding area and a triangular pressure welding area, and the positioning mechanism is provided on the square pressure welding area; a recessed area is provided between the square pressure welding area and the triangular pressure welding area; The processing surface is provided with multiple processing positions, and each processing position corresponds to a metal flexible connection.

6. The mold for multi-layer stacked metal flexible connections according to claim 5, characterized in that: Each pair of the aforementioned processing positions constitutes a processing station group; On the same set of processing stations, the square pressure welding area is provided with two positioning mechanisms. One of the two positioning mechanisms is matched with the first end of one of the metal flexible connectors, and the other is matched with the last end of the other metal flexible connector.

7. The mold for multi-layer stacked metal flexible connections according to claim 6, characterized in that: The processing surface is provided with at least one set of processing stations, and adjacent square pressure welding areas of two adjacent processing stations are connected.

8. A processing device for multi-layer stacked metal flexible connections, characterized in that, include: The enclosure contains a cavity, which is either a vacuum environment or filled with a protective gas. The mold for the multi-layer stacked metal flexible connection as described in any one of claims 1-7 is placed inside the cavity; And a pressure welding device, which is used to pressure weld the mold of the multi-layer stacked metal flexible connection; wherein, The pressure welding device includes a hydraulic cylinder, a movable plate, a conductive copper column, an upper electrode copper plate, and a lower electrode copper plate; the hydraulic cylinder and the movable plate are disposed outside the cavity, and the upper electrode copper plate and the lower electrode copper plate are disposed inside the cavity; the hydraulic cylinder is drivenly connected to the movable plate, and the movable plate is connected to the upper electrode copper plate through the conductive copper column.

9. The processing equipment for multi-layer stacked metal flexible connections according to claim 8, characterized in that: The pressure welding device further includes an upper graphite pad and a lower graphite pad. The upper graphite pad is disposed on the side of the upper electrode copper plate facing the mold body, and the lower graphite pad is disposed on the side of the lower electrode copper plate facing the mold body.

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