A metal piece connecting device

Abstract

The utility model relates to welding technical field, concretely is a kind of metal piece connecting device, it includes first electromagnetic stamping mechanism and second electromagnetic stamping mechanism;The first electromagnetic stamping mechanism includes first electromagnetic system and the first punch structure of being arranged at first electromagnetic system side;The second electromagnetic stamping mechanism includes second electromagnetic system and the second punch structure of being arranged at second electromagnetic system side;The stamping end of the first electromagnetic stamping mechanism and the second electromagnetic stamping mechanism is oppositely arranged, and when using state, the first punch structure and the second punch structure between clamping have two or more metal pieces to be connected.The utility model can reach the pressure required for material cold pressure welding in short time, reduce the large deformation of material at joint, improve the connection quality of metal piece.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a metal part connection device. Background Technology

[0002] Copper parts are widely used in the manufacture of electronics and precision instruments, and the joining processes between these materials are receiving increasing attention from the engineering and academic communities. Copper parts are typically joined using cold pressure welding, which can be either butt joints or lap joints. Welding forces can include extrusion pressure, rolling pressure, or impact pressure. Currently, the core of the joining method is to apply pressure to the material contact surface, causing significant plastic deformation of the metals to be welded, thus achieving solid-state welding. Existing technologies primarily utilize cold pressure welding. Pressure is transmitted to the area to be welded through a pressure head, generating 60-90% deformation, extruding the oxide film and other impurities from the material surface, and pressing the pure metal to a certain atomic spacing (4*10⁻⁸-6*10⁻⁸ mm) to form a lattice plane, resulting in interatomic bonding. Cold pressure welding between copper products mostly employs quasi-static loads. Due to the hardening caused by plastic deformation, the loading force often far exceeds the material's yield strength, leading to even greater material deformation, and requiring improvements in both joining speed and quality. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings in the aforementioned background technology by providing a metal component connection device to reduce deformation at the metal component connection and improve the connection quality of the metal components.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a metal part connecting device, characterized by comprising a first electromagnetic stamping mechanism and a second electromagnetic stamping mechanism; the first electromagnetic stamping mechanism includes a first electromagnetic system and a first punch structure disposed on one side of the first electromagnetic system, the first punch structure including a first driving plate disposed on one side of the first electromagnetic system, a first amplifier fixedly connected to the first driving plate on the side away from the first electromagnetic system, and a first punch fixedly connected to the outer end of the first amplifier; the second electromagnetic stamping mechanism includes a second electromagnetic system and a second punch structure disposed on one side of the second electromagnetic system, the second punch structure including a second driving plate disposed on one side of the second electromagnetic system, a second amplifier fixedly connected to the second driving plate on the side away from the second electromagnetic system, and a second punch fixedly connected to the outer end of the second amplifier; the stamping ends of the first electromagnetic stamping mechanism and the second electromagnetic stamping mechanism are arranged opposite to each other, and in use, two or more metal parts to be connected are clamped between the first punch structure and the second punch structure.

[0005] The aforementioned metal connection device uses two symmetrically arranged electromagnetic stamping mechanisms and an amplifier to amplify and transmit the electromagnetic force to the punch, so that the connection parts of the two or more metal connectors to be connected receive electromagnetic stamping forces in two opposite directions in a short time, which speeds up the connection efficiency, avoids large deformation caused by long-term unidirectional stamping, and improves the connection quality.

[0006] Furthermore, the first electromagnetic system includes a first coil, a first switch, a first inductor, a first resistor, a first capacitor, a second switch, and connecting wires; the first coil is connected to the first switch, the first resistor, the first inductor, and the second switch to form a circuit via the connecting wires; the first capacitor is connected in parallel with the first resistor and the first inductor via the connecting wires. In the first electromagnetic system, when the switch is closed, the capacitor, charged to a preset value, releases energy, and a pulsed current flows through the coil to generate a strong pulsed magnetic field. Based on the principle of electromagnetic induction, this drives the sheet inductor to generate eddy currents, which form a repulsive force with the coil. This repulsive force acts on the sheet metal through an amplifier and a punch, instantly reaching the pressure required for cold-press welding of the material, thus ensuring connection efficiency.

[0007] Furthermore, the first drive plate is fixedly connected to the first amplifier via a bolt structure, and the outer end of the first amplifier is fixedly connected to the first punch via a threaded structure. The first drive plate is connected to the first amplifier via a bolt structure, and the first amplifier and the first punch are fixedly connected via a threaded structure. This facilitates the installation of the first punch structure and allows for easy replacement of punches of different sizes.

[0008] Furthermore, a first pressure ring is fitted onto the outer wall of the first punch and the top outer wall of the first amplifier. The first pressure ring is used to ensure the initial preload when the metal parts are pressed together, preventing loosening or jumping of the metal parts during the connection process, which could cause connection failure or low joint quality defects.

[0009] Furthermore, the first pressure ring, the first punch, and the first amplifier are in a clearance fit. This facilitates the positioning of the first punch.

[0010] Furthermore, the second electromagnetic system includes a second coil, a third switch, a second inductor, a second resistor, a second capacitor, a fourth switch, and connecting wires. The second coil, the second switch, the second resistor, the second inductor, and the fourth switch are connected in a circuit via the connecting wires. The second capacitor is connected in parallel with the second resistor and the second inductor via the connecting wires. In the second electromagnetic system, when the switch is closed, the capacitor, charged to a preset value, releases energy. A pulsed current flows through the coil, generating a strong pulsed magnetic field. Based on the principle of electromagnetic induction, this drives the sheet inductor to generate eddy currents, which create a repulsive force between the inductor and the coil. This repulsive force is amplified and applied to the sheet metal via a punch, instantly reaching the pressure required for cold-press welding of the material, thus ensuring connection efficiency.

[0011] Furthermore, the second drive plate is fixedly connected to the second amplifier via a bolt structure, and the outer end of the second amplifier is fixedly connected to the second punch via a threaded structure. The second drive plate is connected to the second amplifier via bolts, and the second amplifier and the second punch are fixedly connected via a threaded structure. This facilitates the installation of the second punch structure and allows for easy replacement of punches of different sizes.

[0012] Furthermore, a second pressure ring is fitted onto the outer wall of the second punch and the top outer wall of the second amplifier. The second pressure ring is used to ensure the initial preload during the pressing connection of the metal parts, preventing loosening or jumping of the metal parts during the connection process, which could lead to connection failure or low joint quality defects.

[0013] Furthermore, the second pressure ring, the second punch, and the second amplifier are in a clearance fit. This facilitates the positioning of the second punch.

[0014] Furthermore, a gap is provided between the first electromagnetic system and the first punch structure; a gap is also provided between the second electromagnetic system and the second punch structure. This ensures normal discharge of the electromagnetic systems of each component and avoids direct contact.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (i) The device of this utility model symmetrically sets two electromagnetic stamping mechanisms and uses an amplifier to amplify and transmit the electromagnetic force to the punch, so that the connection parts of the two or more metal connectors to be connected receive electromagnetic stamping forces in two opposite directions in a short time, which speeds up the connection efficiency, avoids large deformation caused by long-term unidirectional stamping, and improves the connection quality.

[0016] (ii) The device of this utility model has a simple structure, no pollution during the connection process, no smoke or heat assistance, and lower cost.

[0017] (iii) This utility model has advantages such as small deformation and quick connection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the metal parts connection when the present invention is in use; Figure 3 This is a schematic diagram of the structure after the metal parts are connected in one embodiment of this utility model.

[0019] In the diagram: 1. First electromagnetic stamping mechanism; 101. First coil; 102. First switch; 103. First inductor; 104. First resistor; 105. First capacitor; 106. Second switch; 107. First driver plate; 108. First amplifier; 109. First punch; 1010. First pressure ring; 2. Second electromagnetic stamping mechanism; 201. Second coil; 202. Third switch; 203. Second inductor; 204. Second resistor; 205. Second capacitor; 206. Fourth switch; 207. Second drive plate; 208. Second amplifier; 209. Second punch; 2010. Second pressure ring; 3. Metal parts. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0021] like Figures 1-3 As shown, a metal connection device in this embodiment includes a first electromagnetic stamping mechanism 1 and a second electromagnetic stamping mechanism 2. The first electromagnetic stamping mechanism 1 includes a first electromagnetic system and a first punch structure disposed on one side of the first electromagnetic system. The first punch structure includes a first drive plate 107 disposed on one side of the first electromagnetic system. A first amplifier 108 is fixedly connected to the first drive plate 107 on its side away from the first electromagnetic system, and a first punch 109 is fixedly connected to the outer end of the first amplifier 108. The second electromagnetic stamping mechanism 2 includes a second electromagnetic system and a second punch structure disposed on one side of the second electromagnetic system. The second punch structure includes a second drive plate 207 disposed on one side of the second electromagnetic system. A second amplifier 208 is fixedly connected to the second drive plate 207 on its side away from the second electromagnetic system, and a second punch 209 is fixedly connected to the outer end of the second amplifier 208. The stamping ends of the first electromagnetic stamping mechanism 1 and the second electromagnetic stamping mechanism 2 are arranged opposite each other. In use, two or more metal parts 3 to be connected are clamped between the first punch structure and the second punch structure. The size of the punch can be determined based on the number of metal parts to be connected and the size of the connection parts.

[0022] The device in this embodiment uses two symmetrically arranged electromagnetic stamping mechanisms and an amplifier to amplify and transmit the electromagnetic force to the punch, so that the connection parts of the two or more metal connectors to be connected receive electromagnetic stamping forces in two opposite directions in a short time, which speeds up the connection efficiency, avoids large deformation caused by long-term unidirectional stamping, and improves the connection quality.

[0023] like Figure 1 As shown, the first electromagnetic system includes a first coil 101, a first switch 102, a first inductor 103, a first resistor 104, a first capacitor 105, a second switch 106, and connecting wires. The first coil 101 is connected to the first switch 102, the first resistor 104, the first inductor 103, and the second switch 106 to form a circuit via the connecting wires. The first capacitor 105 is connected in parallel with the first resistor 104 and the first inductor 103 via the connecting wires. After the first capacitor is charged to a preset value, the switch closes, current flows through the first coil, generating an induced field and completing the discharge operation.

[0024] like Figure 1 As shown, the first drive plate 107 is fixedly connected to the first amplifier 108 by a bolt structure, and the outer end of the first amplifier 108 is fixedly connected to the first punch 109 by a threaded structure. The first drive plate is connected to the first amplifier by a bolt structure, and the first amplifier and the first punch are fixedly connected by a threaded structure. This facilitates the installation of the first punch structure and allows for easy replacement of punches of different sizes.

[0025] In this embodiment, there is a gap of 1mm-2mm between the first driving plate 107 and the first coil 101. This ensures normal discharge of the electromagnetic system of each component and avoids direct contact.

[0026] like Figure 1 As shown, a first pressure ring 1010 is fitted onto the outer side wall of the first punch 109 and the top outer side wall of the first amplifier 108. The first pressure ring is used to ensure the initial preload when the metal parts are pressed together, and to prevent the metal parts from loosening or jumping during the connection process, which could cause connection failure or low joint quality.

[0027] like Figure 1 As shown, the first pressure ring 1010, the first punch 109, and the first amplifier 108 are in a clearance fit. This facilitates the positioning of the first punch.

[0028] like Figure 1As shown, the second electromagnetic system includes a second coil 201, a third switch 202, a second inductor 203, a second resistor 204, a second capacitor 205, a fourth switch 206, and connecting wires. The second coil 201 is connected to the third switch 202, the second resistor 204, the second inductor 203, and the fourth switch 206 to form a circuit via the connecting wires. The second capacitor 205 is connected in parallel with the second resistor 204 and the second inductor 203 via the connecting wires. After the second capacitor is charged to a preset value, the switch closes, current flows through the first coil, generating an induced field and completing the discharge operation.

[0029] In the second electromagnetic system, when the switch is closed, the capacitor charged to the preset value releases energy, and the pulse current flows through the coil to generate a strong pulse magnetic field. Based on the principle of electromagnetic induction, the plate inductor generates eddy currents, which form a repulsive force with the coil. The repulsive force acts on the plate material through the amplifier and the punch, instantly reaching the pressure required for cold pressing of the material, which can ensure the connection efficiency.

[0030] like Figure 1 As shown, the second drive plate 207 is fixedly connected to the second amplifier 208 by a bolt structure, and the outer end of the second amplifier 208 is fixedly connected to the second punch 209 by a threaded structure. The second drive plate is connected to the second amplifier by a bolt structure, and the second amplifier and the second punch are fixedly connected by a threaded structure. This facilitates the installation of the second punch structure and allows for easy replacement of punches of different sizes.

[0031] like Figure 1 As shown, a second pressure ring 2010 is fitted onto the outer wall of the second punch 209 and the top outer wall of the second amplifier 208. The second pressure ring is used to ensure the initial preload when the metal parts are pressed together, and to prevent the metal parts from loosening or jumping during the connection process, which could cause connection failure or low joint quality defects.

[0032] like Figure 1 As shown, the second pressure ring 2010, the second punch 209, and the second amplifier 208 are in a clearance fit. This facilitates the positioning of the second punch.

[0033] like Figure 1 and Figure 2 As shown, in this embodiment, a gap is provided between the first electromagnetic system and the first punch structure; a gap is also provided between the second electromagnetic system and the second punch structure. This ensures normal discharge of the electromagnetic systems of each component and avoids direct contact.

[0034] This embodiment uses copper plate connection as an example. The specific connection steps are as follows: S1: Before connecting, clean the surface of the area to be pressed with alcohol or the like to remove water film and organic matter and other impurities. S2: Reference Figure 1 , Figure 1 The initial state diagram is connected. The copper plates are stacked, and the pre-pressure of F1 is applied to the pressure ring. In the electromagnetic system, the switch is closed, the capacitor charged to the preset value releases energy, and the pulse current flows through the coil to generate a strong pulse magnetic field. Based on the principle of electromagnetic induction, the sheet inductor generates eddy currents, which form a repulsive force with the coil. The repulsive force acts on the plate material through the amplifier and the punch, instantly reaching the pressure required for cold pressing of the material.

[0035] S3: Reference Figure 2 Under the action of electromagnetic force, the punch acts on the sheet metal to cause plastic deformation, the oxide film on the surface of the material is broken, the fresh substrate surface inside comes into contact with each other and is activated, and an interatomic bond is formed on the bonding surface.

[0036] S4: Stamping complete, refer to... Figure 3 , Figure 3 This is a schematic diagram of a sample after the copper plate has been pressed and connected by electromagnetic force.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0038] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A metal component connecting device, characterized in that, The system includes a first electromagnetic stamping mechanism (1) and a second electromagnetic stamping mechanism (2). The first electromagnetic stamping mechanism (1) includes a first electromagnetic system and a first punch structure located on one side of the first electromagnetic system. The first punch structure includes a first drive plate (107) located on one side of the first electromagnetic system. A first amplifier (108) is fixedly connected to the first drive plate (107) on the side away from the first electromagnetic system. A first punch (109) is fixedly connected to the outer end of the first amplifier (108). The second electromagnetic stamping mechanism (2) includes a second electromagnetic system and a second punch structure located on one side of the second electromagnetic system. The second punch structure includes a second drive plate (207) located on one side of the second electromagnetic system. A second amplifier (208) is fixedly connected to the second drive plate (207) on the side away from the second electromagnetic system. A second punch (209) is fixedly connected to the outer end of the second amplifier (208). The stamping ends of the first electromagnetic stamping mechanism (1) and the second electromagnetic stamping mechanism (2) are arranged opposite to each other. In use, two or more metal parts (3) to be connected are clamped between the first punch structure and the second punch structure.

2. The metal component connecting device according to claim 1, characterized in that, The first electromagnetic system includes a first coil (101), a first switch (102), a first inductor (103), a first resistor (104), a first capacitor (105), a second switch (106), and connecting wires; the first coil (101) is connected to the first switch (102), the first resistor (104), the first inductor (103), and the second switch (106) to form a circuit through the connecting wires; the first capacitor (105) is connected in parallel with the first resistor (104) and the first inductor (103) through the connecting wires.

3. The metal component connecting device according to claim 1, characterized in that, The first drive plate (107) is fixedly connected to the first amplifier (108) by a bolt structure; the outer end of the first amplifier (108) is fixedly connected to the first punch (109) by a thread structure.

4. A metal component connecting device according to claim 1, characterized in that, A first pressure ring (1010) is fitted onto the outer wall of the first punch (109) and the top outer wall of the first amplifier (108).

5. A metal component connecting device according to claim 4, characterized in that, The first pressure ring (1010) is clearance-fitted with the first punch (109) and the first amplifier (108).

6. A metal component connecting device according to claim 1, characterized in that, The second electromagnetic system includes a second coil (201), a third switch (202), a second inductor (203), a second resistor (204), a second capacitor (205), a fourth switch (206), and connecting wires; the second coil (201) is connected to the third switch (202), the second resistor (204), the second inductor (203), and the fourth switch (206) to form a circuit through the connecting wires; the second capacitor (205) is connected in parallel with the second resistor (204) and the second inductor (203) through the connecting wires.

7. A metal component connecting device according to claim 1, characterized in that, The second drive plate (207) is fixedly connected to the second amplifier (208) by a bolt structure, and the outer end of the second amplifier (208) is fixedly connected to the second punch (209) by a thread structure.

8. A metal component connecting device according to claim 1, characterized in that, A second pressure ring (2010) is fitted onto the outer wall of the second punch (209) and the top outer wall of the second amplifier (208).

9. A metal component connecting device according to claim 8, characterized in that, The second pressure ring (2010) is clearance-fitted with the second punch (209) and the second amplifier (208).

10. A metal component connecting device according to any one of claims 1-9, characterized in that, A gap is provided between the first electromagnetic system and the first punch structure; a gap is provided between the second electromagnetic system and the second punch structure.

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