Aluminum-copper negative post hot press welding production device

Abstract

The utility model discloses a kind of aluminum copper negative pole hot press welding production devices, it is related to negative pole production technical field, including first carrier, second carrier, heat source and driving source, first carrier is used to support copper material, second carrier is used to support aluminum material, heat source is used to heat copper material by heat conduction mode, driving source is used to drive second carrier to drive aluminum material to move towards copper material, to make aluminum material and copper material contact and press together with each other.The utility model heats copper material by heat source alone, then drives the simple two steps of aluminum material and copper material contact press together, realizes the efficient connection of aluminum copper.Compared with the longer machining time, the waste of material is big, the manufacturing cost is high and the production rate is low and other disadvantages brought by conventional production means in prior art, the device can carry out high-quality, high-efficiency aluminum copper welding, to obtain the stable negative pole blank piece of connection.

Description

Technical Field

[0001] This utility model relates to the field of negative electrode production technology, specifically to a hot-press welding production device for aluminum-copper negative electrode. Background Technology

[0002] Currently, aluminum-copper negative electrodes are mainly manufactured using friction welding of aluminum and copper materials or machining of aluminum-copper composite plates. However, these traditional methods have significant limitations: not only is the machining time long, but it also generates a large amount of material waste, resulting in high manufacturing costs for aluminum-copper negative electrodes.

[0003] According to the patent with authorization announcement number CN109616607B, a method for forming a copper-aluminum composite electrode is disclosed, which includes the following steps: (1) cutting copper rods and aluminum rods to obtain copper rods and aluminum rods respectively; (2) performing preliminary pressing on the copper rods and aluminum rods to form copper planes and aluminum planes with positioning holes; (3) pressing and cutting the two again to obtain copper conductive sheets and aluminum conductive sheets; (4) butting the bottom of the copper conductive sheets and aluminum conductive sheets together and welding them into one piece using molecular welding process; (5) cleaning the composite electrode.

[0004] Although this forming method avoids friction welding or composite plate machining, it still has problems such as low productivity and sensitivity to equipment parameters, which limits the large-scale production of aluminum-copper negative electrode posts.

[0005] The following statements provide background information relevant to this application only and do not necessarily constitute prior art.

[0006] To address the aforementioned production drawbacks, one approach involves using a friction element to rub against a copper plate. The friction between the friction element and the copper plate generates heat, which melts or nearly melts the aluminum column, thus connecting the aluminum column to the copper plate. However, no related production equipment has been installed in this approach. Utility Model Content

[0007] The purpose of this utility model is to provide a hot-press welding production device for aluminum-copper negative electrode posts in order to solve the problems in the prior art. This device provides a specific hardware structure for implementing the aforementioned welding technology, and can perform high-quality and high-efficiency aluminum-copper welding to obtain negative electrode post blanks with stable connection effect.

[0008] To solve the above problems, this utility model provides the following technical solution: A thermocompression welding production apparatus for aluminum-copper negative electrode posts includes: The first carrier is used to support the copper material; The second carrier is used to support the aluminum material; A heat source is used to heat copper materials through heat conduction; The driving source is used to drive the second carrier to move the aluminum material toward the copper material so that the aluminum material and the copper material come into contact and press together.

[0009] As a further embodiment of this utility model: the first carrier is provided with a support claw, and the inner side of the support claw is provided with a step. The support claw is arranged in multiple groups and circumferentially, so that the plane where the multiple groups of steps are located together constitutes a positioning area for supporting the copper material.

[0010] As a further embodiment of this utility model: the second carrier is provided with a positioning groove for supporting aluminum material, and the positioning groove can be inserted into the interior of multiple sets of support claws to form a ring as the second carrier moves.

[0011] As a further aspect of this utility model: the first carrier is designed to be movable, so that when the aluminum material and the copper material are in contact and conducting heat, the first carrier can be moved away from the copper material.

[0012] As a further embodiment of this invention, the device also includes a displacement sensor disposed on the second carrier and a baffle disposed on the side of the second carrier. The baffle is located within the working range of the displacement sensor and its position is adjustable along the movement direction of the second carrier.

[0013] As a further embodiment of this utility model: a label is provided on the side of the second carrier for the movable installation of the baffle.

[0014] As a further embodiment of this utility model: the heat source includes a transfer block that can move toward or away from the positioning area, and the transfer block is provided with a heating rod that can come into contact with the copper material. An induction heating coil is sleeved around the heating rod, and the transfer block is provided with a protective baffle for covering the heating rod and the induction heating coil.

[0015] As a further embodiment of this utility model: a water-cooling block is provided on the outside of the second carrier, and the water-cooling block has an inlet and an outlet that are connected to its water-cooling inner cavity.

[0016] As a further embodiment of this utility model: the device also includes a power source connected to the adapter block, and the power source execution end is connected to the adapter block through a water-cooled heat insulation block, which has an inlet and an outlet that communicate with its water-cooled inner cavity.

[0017] As a further aspect of this invention, the device also includes a laser thermometer for measuring the temperature of the heating rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This device provides the specific hardware structure for implementing the aforementioned welding technology. It achieves efficient aluminum-copper bonding through a simple two-step process: heating the copper material separately with a heat source, and then pressing the aluminum material into contact with the copper. Compared to the drawbacks of conventional production methods in existing technologies, such as long machining times, significant material waste, high manufacturing costs, and low productivity, this device can perform high-quality, high-efficiency aluminum-copper welding to obtain a stable negative electrode blank.

[0019] 2. The circumferential array of support claws and steps forms a precise positioning zone, improving the placement accuracy and stability of the copper material. This prevents potential displacement of the copper material during heating and pressing, ensuring product consistency and yield. It provides crucial support for precise positioning in subsequent automated production, avoiding scrap and material waste caused by misalignment. Furthermore, the number of support claws and the shape of the steps can be adapted to the shape and characteristics of the corresponding type of copper material.

[0020] 3. The insertion design of the positioning groove and the annular space of the support claw ensures that the aluminum material can be automatically and accurately aligned with the copper material below. This operation improves the automation level of production and the accuracy of the pressing position, and further realizes high-quality continuous production.

[0021] 4. When the copper and aluminum materials are in contact, the contact is provided by the heating rod applying downward pressure to the copper and the second carrier applying upward pressure to the aluminum. At this time, the portion of the first carrier supporting the copper is located between the heating rod and the second carrier. This portion provides some upward support to the copper, which significantly counteracts the downward pressure from the heating rod, thus weakening the bond between the copper and aluminum. This device, by making the first carrier movable, allows it to move downwards away from the copper during pressing. In this case, the copper is only subjected to the downward pressure from the heating rod, and the aluminum is only subjected to the upward forging action of the second carrier. Both actions act together at the contact point, making it easier for the copper and aluminum to bond and increasing the tightness of their contact.

[0022] 5. Through displacement sensors and position-adjustable baffles, the final position (i.e., pressing depth) of each pressing can be precisely set and repeated. Compared with the sensitivity of equipment parameters in existing technologies, this device transforms process control from difficult-to-stabilize empirical parameters into quantifiable and repeatable mechanical position parameters, thereby improving the stability of the production process and the consistency of the products.

[0023] 6. By adding dedicated marking components, the installation and position adjustment of the baffles become more convenient, precise, and reliable. Staff can quickly and accurately set new displacement references on the marking components according to the process requirements of different products, thus achieving rapid production changeover.

[0024] 7. The combination of induction heating coil and heating rod results in high heating efficiency, fast speed and easy control. The adapter block drives the entire heat source to move, realizing an automated process of "contact during heating and removal after forming", which is smooth and efficient. The protective baffle effectively prevents safety hazards (such as burns and accidental contact) caused by high-temperature components and the impact of heat radiation on surrounding equipment, thus improving the overall safety of the equipment.

[0025] 8. The water-cooling block can continuously remove the heat accumulated by the second carrier due to thermal conduction, preventing its temperature from becoming too high. Firstly, it can quickly cool down the second carrier, that is, cool down the negative electrode blank. Secondly, it protects the second carrier and the precision components installed on it (such as the displacement sensor in this article). Thirdly, it avoids unnecessary secondary heating or property changes of the aluminum material due to overheating of the carrier, ensuring the stability of the process and the durability of the equipment during long-term continuous production.

[0026] 9. The water-cooled heat insulation block plays a dual role of "isolating the heat source and protecting the power source". The water-cooled heat insulation block blocks the conduction of heat to the power source, and the internal water circulation removes residual heat, effectively preventing the power source, which is sensitive to temperature, from degrading or being damaged due to overheating. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is a front view structural diagram of the present invention; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the first carrier and the second carrier of this utility model; Figure 5 This is a schematic diagram of the aluminum-copper negative electrode post of this utility model.

[0029] In the diagram: 1. First carrier; 101. Support claw; 102. Step; 2. Second carrier; 201. Positioning groove; 3. Heat source; 4. Drive source; 5. Displacement sensor; 6. Baffle; 7. Identifier; 8. Adapter block; 9. Heating rod; 10. Induction heating coil; 11. Protective baffle; 12. Water-cooled block; 13. Power source; 14. Water-cooled heat insulation block; a. Copper material; b. Aluminum material. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1-4 As shown, a thermocompression welding production apparatus for aluminum-copper negative electrode columns includes a machine base. A first carrier 1 is mounted on the machine base to support copper material a. A second carrier 2 is also mounted on the machine base to support aluminum material b. Preferably, this description uses the arrangement of the first carrier 1 above the second carrier 2 as an example; therefore, initially, copper material a is positioned above aluminum material b. The machine base also includes a drive source (which can be a linear drive component such as a hydraulic cylinder) 4, which drives the second carrier 2 upwards until the aluminum material b on the second carrier 2 contacts the copper material a on the first carrier 1. The apparatus also includes a heat source 3 for heating the copper material a on the first carrier 1.

[0032] In use, the copper material a is first heated by heat source 3 through heat conduction until it reaches the specified temperature. Then, the second carrier 2 is driven upward by drive source 4 until the aluminum material b on the second carrier 2 comes into contact with the copper material a. During the heat transfer process from the copper material a to the aluminum material b, the part of the aluminum material b in contact with the copper material a will melt. Since the drive source 4 will always apply an upward pushing force to the second carrier 2, the aluminum material b will be subjected to an upward forging force to ensure its close contact with the copper material a. Then, the heat source 3 is turned off and the material is cooled for a corresponding time to complete the hot pressure welding and obtain the corresponding aluminum-copper negative electrode blank.

[0033] Furthermore, such as Figure 1 As shown, this application includes a heat source 3 as a transfer block 8. A heating rod 9, which can contact the copper material a, is mounted on the transfer block 8. An induction heating coil 10 is sleeved around the heating rod 9. A protective baffle 11 is provided on the transfer block 8 to cover the heating rod 9 and the induction heating coil 10. The transfer block 8 can be driven to move closer to or further away from the first carrier 1, that is, to move the heating rod 9 closer to or further away from the first carrier 1. When it is necessary to heat the copper material a on the first carrier 1, the heating rod 9 can be driven to directly contact the copper material a, conducting heat to the copper material a and achieving heating. At this time, the copper material a is subjected to the downward contact of the heating rod 9, and the aluminum material b is subjected to the upward forging action of the second carrier 2. Under these two forces, the copper material a and the aluminum material b will be well bonded together to form an aluminum-copper negative electrode blank.

[0034] In order to ensure that the heating rod 9 is driven to move downwards to contact the copper material a for heat transfer only after the heating rod 9 reaches the corresponding temperature, this application also includes a laser thermometer (not shown in the figure) for measuring the temperature of the heating rod 9. The position of the laser thermometer can be arbitrary, and this document does not limit it. For example, the laser thermometer can be set on the protective baffle 11, with its working end facing the heating rod 9 and used to detect the temperature of the heating rod 9. The laser thermometer will also move accordingly to detect the temperature of the heating rod 9 during its up-and-down movement.

[0035] To drive the adapter block 8 to perform the corresponding actions, this application provides a power source 13. The power source 13 is directly selected as a tool holder on a welding machine tool that has the characteristic of vertical movement. During assembly, the adapter block 8 can be directly installed at the bottom of the tool holder. Alternatively, the power source 13 can be selected as other linear drive components, such as a cylinder, and the adapter block 8 can be installed on the actuator end of the cylinder.

[0036] Regardless of the type of power source 13 used, in order to prevent the heat from the heating rod 9 from being transferred to the power source 13, this application connects the execution end of the power source 13 and the adapter block 8 through a water-cooled heat insulation block 14. The water-cooled heat insulation block 14 has an inlet and an outlet that are connected to its water-cooled inner cavity. The inlet is connected to a water inlet pipe, and the outlet is connected to an outlet pipe. Through the continuous inlet and outlet of water, a continuous flow of cooling water can be formed in the water-cooled inner cavity of the water-cooled heat insulation block 14, which continuously cools the water-cooled heat insulation block 14 and achieves heat insulation for the power source 13.

[0037] When copper material a and aluminum material b are in vertical contact, the vertical contact is provided by the heating rod 9 applying downward pressure to copper material a and the second carrier 2 applying upward pressure to aluminum material b. At this time, the portion of the first carrier 1 used to support copper material a is located between the heating rod 9 and the second carrier 2. This portion provides a certain upward support to copper material a, which greatly counteracts the downward contact of the heating rod 9, thus weakening the bonding between copper material a and aluminum material b. To better shape copper material a and aluminum material b under the aforementioned two forces, this application makes the first carrier 1 movable. When copper material a and aluminum material b are in vertical contact, the first carrier 1 can be moved downwards, i.e., moved away from copper material a. This state can be achieved by... Figure 2 To illustrate, in this state, copper material a is only subjected to the downward contact of heating rod 9, and aluminum material b is only subjected to the upward forging of second carrier 2. The two actions work together at the contact position between the two, making it easier for copper material a and aluminum material b to come into contact and bond, and improving the tightness of contact between copper material a and aluminum material b.

[0038] like Figure 4As shown, in order to support the copper material a on the first carrier 1, the present application provides a support claw 101 on the first carrier 1. The inner side of the support claw 101 is provided with a step 102. The support claw 101 is configured as multiple sets and arranged in a circumferential array, so that there are also multiple sets of steps 102. The plane where the multiple sets of steps 102 are located together constitutes a positioning area for supporting the copper material a. Figure 4 The diagram shows a case where the support claws 101 are configured in four groups. In this case, the plane in which the four groups of steps 102 are located constitutes the aforementioned positioning area.

[0039] To enable the second carrier 2 to support the aluminum material b, this application provides a positioning groove 201 on the second carrier 2. The positioning groove 201 is used to support the aluminum material b. Figure 5 As shown, based on the shape characteristics of copper material a and aluminum material b (copper material a is sheet-like, aluminum material b is cylindrical or tubular), the second carrier 2 is designed to penetrate the first carrier 1 from bottom to top. The second carrier 2 can drive the aluminum material b to be inserted upward into the annular whole formed by multiple sets of support claws 101, so that the end of the cylindrical or tubular aluminum material b abuts against the side of the sheet-like copper material a. Figure 4 In the state shown, the top of the second carrier 2 penetrates the first carrier 1 from bottom to top to achieve the subsequent contact between the aluminum material b and the copper material a.

[0040] Of course, the shapes shown for the positioning area and positioning groove 201 in this device are merely for adaptation. Figure 5 The shape of the negative electrode post product shown will be adapted to the shape of the positioning area and positioning groove 201 when the shape characteristics of copper material a and aluminum material b are not the above-mentioned sheet, cylindrical or tubular shapes.

[0041] Furthermore, when the copper material a and the aluminum material b are in contact, the end of the aluminum material b will melt, and since the second carrier 2 is always pushed upward by the driving source 4, this application also includes a displacement sensor 5 disposed on the second carrier 2 and a baffle 6 disposed beside the second carrier 2. The baffle 6 is located within the working range of the displacement sensor 5, and its position is adjustable along the movement direction of the second carrier 2. In use, the position of the baffle 6 is fixed. When the second carrier 2 is pushed upward by the driving source 4, it can drive the displacement sensor 5 upward. When the displacement sensor 5 senses the baffle 6 during its upward movement, it shuts off the induction heating coil 10 and stops heating. The aluminum-copper negative electrode blank formed by hot pressing will gradually cool down. During this cooling process, the driving source 4 will always apply an upward force to the second carrier 2, so that the second carrier 2 always has an upward forging force on the aluminum material b. In some specific embodiments, the displacement sensor 5 can be selected as a slotted photoelectric switch.

[0042] To facilitate the adjustment of the baffle 6 to the corresponding position, this application provides a marking element 7 on the machine tool. The baffle 6 is mounted on the marking element 7, which has a scale. The baffle 6 can be adjusted to the corresponding position according to the scale. The marking element 7 can be a conventional vernier caliper or a conventional ruler, etc., and this application does not limit it to this.

[0043] In order to rapidly cool down the second carrier 2 after hot-press welding, this application provides a water-cooling block 12 on the outside of the second carrier 2. The water-cooling block 12 has an inlet and an outlet connected to its water-cooling inner cavity. The inlet is connected to a water inlet pipe and the outlet is connected to an outlet pipe. Through the continuous inlet and outlet of water, a continuous flow of cooling water can be formed in the water-cooling inner cavity of the water-cooling block 12, thereby achieving rapid cooling of the second carrier 2.

[0044] Regarding the configuration of the first carrier 1 and the second carrier 2, the first carrier 1 can be configured as a support, and the second carrier 2 can be configured as a cylinder. Furthermore, when the heating rod 9 conducts heat to the copper material a, in order to avoid the dispersion and loss of heat conduction energy, the first carrier 1 can be configured as a ceramic material.

[0045] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A production apparatus for hot-press welding of aluminum-copper negative electrode posts, characterized in that, include: The first carrier (1) is used to support the copper material (a); The second carrier (2) is used to support the aluminum material (b); The heat source (3) is used to heat the copper material (a) through heat conduction; The driving source (4) is used to drive the second carrier (2) to move the aluminum material (b) toward the copper material (a) so that the aluminum material (b) and the copper material (a) come into contact and press together.

2. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 1, characterized in that, The first carrier (1) is provided with a support claw (101), and a step (102) is provided on the inner side of the support claw (101). The support claw (101) is arranged in multiple groups and circumferential array so that the planes on which the multiple groups of steps (102) are located together form a positioning area for supporting the copper material (a).

3. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 2, characterized in that, The second carrier (2) has a positioning groove (201) for supporting the aluminum material (b). The positioning groove (201) can be inserted into the interior of multiple sets of support claws (101) to form a ring as the second carrier (2) moves.

4. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 2 or 3, characterized in that, The first carrier (1) is designed to be movable so that when the aluminum material (b) and the copper material (a) are in contact and conducting heat, the first carrier (1) can move away from the copper material (a).

5. A thermocompression welding production apparatus for aluminum-copper negative electrode columns according to any one of claims 1-3, characterized in that, The device also includes a displacement sensor (5) disposed on the second carrier (2) and a baffle (6) disposed on the side of the second carrier (2). The baffle (6) is located within the working range of the displacement sensor (5) and its position is adjustable along the movement direction of the second carrier (2).

6. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 5, characterized in that, The second carrier (2) has a label (7) on its side for the movable installation of the baffle (6).

7. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 2 or 3, characterized in that, The heat source (3) includes a transfer block (8) that can move toward or away from the positioning area, and the transfer block (8) is provided with a heating rod (9) that can come into contact with the copper material (a). An induction heating coil (10) is sleeved around the heating rod (9). The transfer block (8) is provided with a protective baffle (11) for covering the heating rod (9) and the induction heating coil (10).

8. The aluminum-copper negative electrode hot-press welding production apparatus according to any one of claims 1-3, characterized in that, The second carrier (2) is provided with a water-cooled block (12) on its exterior. The water-cooled block (12) has an inlet and an outlet that are connected to its water-cooled inner cavity.

9. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 7, characterized in that, The device also includes a power source (13) connected to the adapter block (8), and the power source (13) and the adapter block (8) are connected by a water-cooled heat insulation block (14), which has an inlet and an outlet connected to its water-cooled inner cavity.

10. The aluminum-copper negative electrode hot-press welding production apparatus according to claim 7, characterized in that, The device also includes a laser thermometer for measuring the temperature of the heating rod (9).

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