Auxiliary propelling device for electromagnetic pulse welding

Abstract

The invention discloses an auxiliary propelling device for electromagnetic pulse welding, and belongs to the technical field of electromagnetic pulse welding, the auxiliary propelling device comprises an electromagnetic pulse welding mechanism, two buffering and cooling machines are arranged in the electromagnetic pulse welding mechanism, and the electromagnetic pulse welding mechanism comprises a fixed base; a pulsed magnetic field is generated through an electromagnetic coil, after a driving plate impacts a flying plate at a high speed, a driving rod enters the cambered surface of an arc-shaped groove, so that the driving rod moves on the cambered surface of the arc-shaped groove to weaken the impact force of the driving plate, and the driving rod can drive a rotating assembly to rotate through the arc-shaped groove; the cam can be matched with the current conversion assembly to achieve liquid flowing replacement in the cooling assembly, then cooling of the electromagnetic coil can be achieved without additionally arranging cooling equipment, continuous welding operation is guaranteed, when the buffer plate makes contact with the buffer assembly for further buffering operation, the drive plate is decelerated and reset, the repeated utilization rate of the drive plate is greatly increased, and the production cost is reduced. And the consumable replacement cost and the downtime are reduced.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic pulse welding technology, and in particular to an auxiliary propulsion device for electromagnetic pulse welding. Background Technology

[0002] Electromagnetic pulse welding (EMB) is an advanced welding technology that uses electromagnetic force to drive a flyer plate at high speed to impact the workpiece, achieving a solid-state connection through plastic deformation. Due to the absence of a high-temperature molten pool and a small heat-affected zone, it is widely used for precision joining of dissimilar metals. However, existing EMB welding devices typically add a drive plate to propel the flyer plate in order to increase its speed and mechanical force to reduce welding failure. However, the flyer plate's propulsion relies on the instantaneous electromagnetic force of the drive plate, and after propulsion, the drive plate tends to maintain high-speed motion due to inertia, making it difficult to decelerate and reset quickly. This results in the drive plate being unusable, requiring frequent replacement or manual adjustment, increasing welding costs and time. Furthermore, the electromagnetic coils inside the buffer plate generate a large amount of heat during high-frequency operation, which cannot be cooled quickly, affecting continuous use. Additionally, air resistance in the welding area weakens the propulsion speed of the drive plate and flyer plate and may cause oxidation on the flyer plate surface, affecting the bonding strength and sealing of the weld joint. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the drive plate, which, after propelling the flyboard, tends to maintain high-speed motion due to inertia, making it difficult to decelerate and reset quickly. This results in the drive plate being unusable, requiring frequent replacement or manual adjustment, increasing welding costs and time. Furthermore, the electromagnetic coil inside the buffer plate easily generates a large amount of heat during high-frequency operation, which cannot be cooled quickly, affecting continuous use. Additionally, air resistance in the welding working area weakens the propulsion speed of the drive plate and flyboard and may also cause oxidation on the flyboard surface, affecting the bonding strength and sealing of the weld joint. Therefore, this invention proposes an auxiliary propulsion device for electromagnetic pulse welding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An auxiliary propulsion device for electromagnetic pulse welding includes an electromagnetic pulse welding mechanism, wherein the electromagnetic pulse welding mechanism is provided with two buffering and cooling mechanisms. The electromagnetic pulse welding mechanism includes a fixed base, on which a sealing assembly is assembled. The sealing assembly contains four buffer components and a pressure chamber. A drive plate is attached below the pressure chamber. Guide components are provided on both sides of the pressure chamber. A drive rod is fixedly connected to the fixed block of the guide component. The buffer and cooling mechanism includes a cooling component, the cooling shell of the cooling component is fixedly connected to the pressure chamber, the cooling component is connected to the converter component, the auxiliary wheel of the converter component is engaged with the cam of the rotating component, and the rotating roller of the rotating component is provided with an arc groove, and the drive rod is slidably connected to the arc groove.

[0005] Preferably, an anvil is fixedly connected above the fixed base, a base plate is attached above the anvil, two pads are attached above the base plate, and a flyboard is attached above the two pads.

[0006] Preferably, the sealing assembly includes a fixing frame, which is fixedly connected to a fixing base. An electric push rod is fixedly installed on the fixing frame, and a sealing cavity is fixedly connected to the bottom end of the electric push rod.

[0007] Preferably, a sealing layer is provided below the sealing cavity, and a vacuum device is installed on the sealing cavity.

[0008] Preferably, an electromagnetic coil is provided in the pressure cavity, and a vacuum device is installed on the sealed cavity, with the vacuum device communicating with the pressure cavity.

[0009] Preferably, the buffer assembly includes two circular discs, with a telescopic rod and a buffer spring fixedly connected between the two discs. The lower disc is fixedly connected to the bottom wall of the sealed cavity, and two buffer plates are fixedly connected to both sides of the drive plate.

[0010] Preferably, the guide assembly includes a fixing block mounted on a drive plate, a sliding sleeve fixed on the fixing block, the sliding sleeve being slidably connected to a sliding rod, and the sliding rod being fixedly connected to the bottom wall of the sealing cavity.

[0011] Preferably, the rotating assembly includes a rotating roller, which is rotatably mounted on the sealed cavity via a bearing, and a cam is fixedly mounted on the rotating roller. The upper section of the arc-shaped groove is a straight groove.

[0012] Preferably, the converter assembly includes a housing, on which coolers are installed on both side walls. The housing is fixedly connected to the top wall of the sealed cavity. A piston rod is provided inside the housing. A first spring is fixedly connected between the piston rod and the inner wall of the housing. The piston rod extends out of the housing and is fixed to an auxiliary wheel.

[0013] Preferably, the cooling assembly includes a cooling shell, which is fixedly connected to the top wall of the sealed cavity. The interior of the cooling shell has multiple interleaved partitions that form a serpentine channel. The two ends of the serpentine channel are connected to the two sides of the shell through a one-way liquid inlet pipe and a one-way liquid outlet pipe, respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects.

[0015] 1. This auxiliary propulsion device for electromagnetic pulse welding generates a pulsed magnetic field through an electromagnetic coil, causing the drive plate to impact the fly plate at high speed. The drive rod then enters the arc surface of the arc groove. The movement of the drive rod on the arc surface of the arc groove weakens the impact force of the drive plate. Furthermore, the drive rod can drive the rotating component to rotate through the arc groove, allowing the cam to cooperate with the commutation component to replace the liquid flow in the cooling component. This eliminates the need for additional cooling equipment to cool the electromagnetic coil, ensuring continuous welding operations. When the buffer plate contacts the buffer component, it further buffers the operation, causing the drive plate to decelerate and reset, significantly improving the reusability of the drive plate and reducing consumable replacement costs and downtime.

[0016] 2. The auxiliary propulsion device for electromagnetic pulse welding is attached to the fixed base by a sealing component. Then, the vacuum equipment performs a vacuuming operation on the sealing cavity, which can completely eliminate the interference of air resistance on the propulsion process of the drive plate and the fly plate, ensuring that the drive plate pushes the fly plate at a stable speed. At the same time, the vacuum environment can isolate oxygen, prevent the surface of the fly plate from oxidizing during high-speed movement, and improve the bonding strength and sealing performance.

[0017] 3. This auxiliary propulsion device for electromagnetic pulse welding uses a sealing component to create a vacuum in the welding space. This vacuum environment eliminates air resistance, allowing the electromagnetic coil to impact the flyboard more precisely via the drive plate. After the impact, the drive rod and rotating component work together to buffer the impact. The rotating component also works with the commutation component to exchange the liquid in the cooling component, effectively cooling the electromagnetic coil. This cooling ensures the long-term stable output of the electromagnetic drive system. This method ensures efficient reuse of the drive plate, reduces environmental interference, and provides energy-saving cooling. Furthermore, it enables high-quality continuous welding operations through coordinated operation. Attached Figure Description

[0018] Figure 1 This is a perspective view of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention; Figure 2 This is a cross-sectional perspective view of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention; Figure 3 This is a cross-sectional perspective view of the sealing assembly of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention. Figure 4 This is a perspective view of the fixed base of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention; Figure 5 This is a perspective view of the connection between the drive plate and the pressure cavity of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention; Figure 6 This is a perspective view of the connection between the drive plate and the guide assembly of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention; Figure 7 This is a perspective view of the guide assembly of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention; Figure 8 This is a cross-sectional perspective view of the cooling component of an auxiliary propulsion device for electromagnetic pulse welding proposed in this invention. Figure 9 In this invention Figure 6 A magnified view of point A.

[0019] In the diagram: 100, Electromagnetic pulse welding mechanism; 101, Fixed base; 102, Sealing assembly; 1021, Fixing frame; 1022, Sealing cavity; 1023, Electric push rod; 1024, Sealing layer; 1025, Vacuum equipment; 103, Pressure chamber; 104, Drive plate; 105, Buffer assembly; 1051, Telescopic rod; 1052, Buffer spring; 1053, Circular disc; 106, Guide assembly; 1061, Fixing block; 1062, Sliding sleeve; 1063, Sliding rod; 107, Drive rod; 108, Vacuum device; 109. Buffer plate; 110. Anvil; 111. Flying plate; 112. Pad plate; 113. Base plate; 200. Buffer and cooling mechanism; 201. Rotating assembly; 2011. Rotating roller; 2012. Cam; 2013. Arc groove; 202. Flow converter assembly; 2021. Housing; 2022. Piston rod; 2023. First spring; 2024. Auxiliary wheel; 203. Cooling assembly; 2031. Cooling shell; 2032. Partition; 2033. One-way liquid inlet pipe; 2034. One-way liquid outlet pipe; 2035. Refrigerator. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1: Refer to Figures 1-9 An auxiliary propulsion device for electromagnetic pulse welding includes an electromagnetic pulse welding mechanism 100, wherein two buffer and cooling mechanisms 200 are provided in the electromagnetic pulse welding mechanism 100. The electromagnetic pulse welding mechanism 100 includes a fixed base 101, an anvil 110 fixedly connected above the fixed base 101, a base plate 113 overlapping above the anvil 110, two pads 112 overlapping above the base plate 113, and a fly plate 111 overlapping above the two pads 112. A sealing assembly 102 is mounted on the fixed base 101. The sealing assembly 102 is provided with four buffer assemblies 105 and a pressure chamber 103. The buffer assembly 105 includes two circular disks 1053, and a telescopic rod 1 is fixedly connected between the two circular disks 1053. 051 and buffer spring 1052, when the drive plate 104 impacts the flyboard 111, the drive rod 107 enters the arc groove 2013, and the buffer plate 109 can press down on the buffer spring 1052, so that the buffer spring 1052 can further buffer and protect the drive plate 104. The lower circular disk 1053 is fixedly connected to the bottom wall of the sealed cavity 1022. Two buffer plates 109 are fixedly connected to both sides of the drive plate 104. Through the design of the buffer plate 109, the buffer plate 109 can correspond to the buffer assembly 105, thereby smoothly realizing the drive. The buffering operation of the moving plate 104 is achieved by an electromagnetic coil installed in the pressure chamber 103, and a vacuum device 108 installed on the sealed cavity 1022. The vacuum device 108 is connected to the pressure chamber 103. A suction cup hole is provided at the bottom of the pressure chamber 103, allowing the vacuum device 108 to tightly adhere the driving plate 104 to the pressure chamber 103 through a vacuum design. At the moment the driving plate 104 is released, the vacuum device 108 releases gas, thereby reducing the resistance of the driving plate 104. The driving plate 104 overlaps the bottom of the pressure chamber 103, and guide groups are provided on both sides of the pressure chamber 103. Component 106, guide assembly 106 includes a fixing block 1061, the fixing block 1061 is mounted on the drive plate 104, the fixing block 1061 is fixed with a sliding sleeve 1062, the sliding sleeve 1062 is slidably connected to the sliding rod 1063, the sliding rod 1063 can guide the sliding sleeve 1062, so that the sliding sleeve 1062 slides smoothly along the sliding rod 1063, thereby making the drive plate 104 move downward smoothly, the sliding rod 1063 is fixedly connected to the bottom wall of the sealing cavity 1022, and the fixing block 1061 of guide assembly 106 is fixedly connected with a drive rod 107; The buffer and cooling mechanism 200 includes a cooling assembly 203, which includes a cooling shell 2031. The cooling shell 2031 is fixedly connected to the top wall of the sealed cavity 1022. Multiple partitions 2032 are staggered inside the cooling shell 2031, forming a serpentine channel. This serpentine channel facilitates liquid replacement. A one-way inlet pipe 2033 ensures one-way liquid inflow, and a one-way outlet pipe 2034 ensures one-way liquid outflow, preventing backflow from affecting liquid exchange. The two ends of the serpentine channel are respectively connected to the serpentine channel via the one-way inlet pipe 2033 and the one-way outlet pipe 2034. The two sides of the housing 2021 are connected. The cooling shell 2031 of the cooling assembly 203 is fixedly connected to the pressure chamber 103. The cooling shell 2031 and the pressure chamber 103 can play a role in heat conduction, thereby facilitating heat exchange and cooling the electromagnetic coil. The cooling assembly 203 is connected to the commutation assembly 202. The commutation assembly 202 includes the housing 2021. Coolers 2035 are installed on both side walls of the housing 2021. The coolers 2035 can cool the liquid, thereby facilitating heat exchange. The housing 2021 is fixedly connected to the top wall of the sealed cavity 1022. A piston rod 2022 is installed inside the housing 2021. A first spring 2023 is fixedly connected between the piston rod 2022 and the inner wall of the housing 2021. The piston rod 2022 extends out of the housing 2021 and is fixed to an auxiliary wheel 2024. The auxiliary wheel 2024 of the converter assembly 202 engages with the cam 2012 of the rotating assembly 201. The auxiliary wheel 2024 reduces the resistance between the cam and the cam 2012, facilitating the smooth movement of the cam 2012. The rotating assembly 201 includes a roller 2011, which is rotatably mounted on the sealed cavity 1022 via bearings. The roller 2011 can... The cam 2012 rotates stably by maintaining stable rotation through the bearing. The cam 2012 is fixedly installed on the roller 2011. The upper part of the arc groove 2013 is a straight groove. The straight groove is set above the arc groove 2013 so that the drive rod 107 can move smoothly along the vertical direction, reducing the resistance of the drive plate 104. When the drive plate 104 impacts the fly plate 111, the drive rod 107 can enter the arc surface of the arc groove 2013 for initial buffering. The roller 2011 of the rotating assembly 201 has an arc groove 2013, and the drive rod 107 is slidably connected to the arc groove 2013.

[0023] In this embodiment: a pulsed magnetic field is generated by an electromagnetic coil, causing the drive plate 104 to impact the flyboard 111 at high speed. The drive rod 107 then enters the arc surface of the arc groove 2013. The movement of the drive rod 107 on the arc surface of the arc groove 2013 weakens the impact force of the drive plate 104. Furthermore, the drive rod 107 can drive the rotating roller 2011 to rotate via the arc groove 2013. The rotating roller 2011 drives the cam 2012 to rotate, allowing the cam 2012 to press against the auxiliary wheel 2024. The auxiliary wheel 2024 drives the piston rod 2022 to move, causing the first spring 2023 to deform. When the cam 2023... The convex surface of 012 moves away from the auxiliary wheel 2024, causing the first spring 2023 to drive the piston rod 2022 to reset. The first spring 2023, in conjunction with the cam 2012, resets the piston rod 2022, thereby allowing the liquid in the cooling shell 2031 to be replaced. This eliminates the need for additional cooling equipment to cool the electromagnetic coil, ensuring continuous welding operations. Furthermore, when the buffer plate 109 contacts the buffer assembly 105, it further buffers the operation, causing the drive plate 104 to decelerate and reset, significantly improving the reusability of the drive plate 104 and reducing the cost of consumable replacement and downtime.

[0024] Example 2: Refer to Figure 3 An auxiliary propulsion device for electromagnetic pulse welding includes a sealing assembly 102. The sealing assembly 102 includes a fixing frame 1021, which is fixedly connected to a fixing base 101. An electric push rod 1023 is fixedly installed on the fixing frame 1021. The electric push rod 1023 can be fixed by the fixing frame 1021, thereby ensuring the stability of the electric push rod 1023 and enabling the electric push rod 1023 to stably drive the sealing cavity 1022 to move up and down. The bottom end of the electric push rod 1023 is fixedly connected to the sealing cavity 1022. A sealing layer 1024 is provided below the sealing cavity 1022. The sealing layer 1024 can ensure the sealing between the sealing cavity 1022 and the fixing base 101. A vacuum device 1025 is installed on the sealing cavity 1022.

[0025] In this embodiment: the sealing cavity 1022 is pushed down by the electric push rod 1023, so that the sealing cavity 1022 is pressed tightly against the fixed base 101. Then, the vacuum equipment 1025 performs a vacuuming operation on the sealing cavity 1022, thereby completely eliminating the interference of air resistance on the propulsion process of the drive plate 104 and the flying plate 111, ensuring that the drive plate 104 pushes the flying plate 111 at a stable speed. At the same time, the vacuum environment can isolate oxygen, prevent the surface of the flying plate 111 from oxidizing during high-speed movement, and improve the bonding strength and sealing performance.

[0026] Example 3: Reference Figures 1-3 and Figures 5-6 An auxiliary propulsion device for electromagnetic pulse welding includes an electromagnetic pulse welding mechanism 100, wherein two buffer and cooling mechanisms 200 are provided in the electromagnetic pulse welding mechanism 100. The electromagnetic pulse welding mechanism 100 includes a fixed base 101, a sealing assembly 102 is mounted on the fixed base 101, four buffer assemblies 105 and a pressure cavity 103 are provided in the sealing assembly 102, a drive plate 104 is attached to the bottom of the pressure cavity 103, and guide assemblies 106 are provided on both sides of the pressure cavity 103. A drive rod 107 is fixedly connected to the fixing block 1061 of the guide assembly 106. The buffer and cooling mechanism 200 includes a cooling component 203. The cooling shell 2031 of the cooling component 203 is fixedly connected to the pressure chamber 103. The cooling component 203 is connected to the commutation component 202. The auxiliary wheel 2024 of the commutation component 202 is engaged with the cam 2012 of the rotating component 201. An arc-shaped groove 2013 is provided on the rotating roller 2011 of the rotating component 201. The drive rod 107 is slidably connected to the arc-shaped groove 2013.

[0027] In this embodiment: the welding space is evacuated by the sealing component 102. The vacuum environment eliminates air resistance, making the electromagnetic coil impact the fly plate 111 more accurately through the drive plate 104. After the impact of the drive plate 104, the drive rod 107 and the rotating component 201 work together to achieve buffering. The rotating component 201 also works with the commutation component 202 to achieve liquid commutation in the cooling component 203, which smoothly cools the electromagnetic coil. The cooling of the electromagnetic coil ensures the long-term stable output of the electromagnetic drive system. This method can ensure the efficient reuse of the drive plate 104, reduce environmental interference and save energy. Furthermore, the coordinated operation enables high-quality continuous welding.

[0028] Working principle: During electromagnetic pulse welding, the electric push rod 1023 pushes the sealing cavity 1022 downward, and the sealing cavity 1022 contacts the fixed base 101. At this time, the vacuum device 1025 evacuates the sealing cavity 1022. After evacuation, the electromagnetic coil runs and impacts the drive plate 104 downward through electromagnetic pulse. The vacuum device 108 releases the pressure chamber 103 on the drive plate 104. The drive plate 104 instantly impacts the flying plate 111 downward, causing the flying plate 111 to hit the substrate 113 to perform welding. After the drive plate 104 impacts the fly plate 111, the drive rod 107 enters the arc surface of the arc groove 2013 for buffering. The drive rod 107 also drives the rotating roller 2011 to rotate through the arc surface of the arc groove 2013. The rotating roller 2011 drives the cam 2012 to rotate. The cam 2012 drives the extrusion auxiliary wheel 2024. The auxiliary wheel 2024 drives the piston rod 2022 to move, causing the piston rod 2022 to deform the first spring 2023. The piston rod 2022 pushes liquid into the cooling shell 2031 through the one-way liquid inlet pipe 2033 and leads the liquid out of the cooling shell 2031 through the one-way liquid outlet pipe 2034, allowing the liquid to flow and exchange. When the convex surface of the cam 2012 moves away from the auxiliary wheel 2024, the first spring 2023 drives the piston rod 2022 to reset, allowing the liquid to exchange again, thereby performing heat exchange and cooling operations on the electromagnetic coil.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An auxiliary propulsion device for electromagnetic pulse welding, comprising an electromagnetic pulse welding mechanism (100), characterized in that, The electromagnetic pulse welding mechanism (100) is provided with two buffer and cooling mechanisms (200). The electromagnetic pulse welding mechanism (100) includes a fixed base (101), on which a sealing assembly (102) is mounted. The sealing assembly (102) is provided with four buffer assemblies (105) and a pressure chamber (103). A drive plate (104) overlaps below the pressure chamber (103). Guide assemblies (106) are provided on both sides of the pressure chamber (103). A drive rod (107) is fixedly connected to the fixing block (1061) of the guide assembly (106). The buffer and cooling mechanism (200) includes a cooling assembly (203). The cooling shell (2031) of the cooling assembly (203) is fixedly connected to the pressure chamber (103). The cooling assembly (203) is connected to the converter assembly (202). The auxiliary wheel (2024) of the converter assembly (202) is engaged with the cam (2012) of the rotating assembly (201). An arc groove (2013) is provided on the rotating roller (2011) of the rotating assembly (201). The drive rod (107) is slidably connected to the arc groove (2013).

2. The auxiliary propulsion device for electromagnetic pulse welding according to claim 1, characterized in that, An anvil (110) is fixedly connected above the fixed base (101). A base plate (113) overlaps above the anvil (110). Two pads (112) overlap above the base plate (113). A flyboard (111) overlaps above the two pads (112).

3. The auxiliary propulsion device for electromagnetic pulse welding according to claim 1, characterized in that, The sealing assembly (102) includes a fixing frame (1021), which is fixedly connected to the fixing base (101). An electric push rod (1023) is fixedly installed on the fixing frame (1021), and a sealing cavity (1022) is fixedly connected to the bottom end of the electric push rod (1023).

4. The auxiliary propulsion device for electromagnetic pulse welding according to claim 3, characterized in that, A sealing layer (1024) is provided below the sealing cavity (1022), and a vacuum device (1025) is installed on the sealing cavity (1022).

5. The auxiliary propulsion device for electromagnetic pulse welding according to claim 3, characterized in that, An electromagnetic coil is provided in the pressure chamber (103), and a vacuum device (108) is installed on the sealed cavity (1022), with the vacuum device (108) connected to the pressure chamber (103).

6. The auxiliary propulsion device for electromagnetic pulse welding according to claim 3, characterized in that, The buffer assembly (105) includes two circular discs (1053), with a telescopic rod (1051) and a buffer spring (1052) fixedly connected between the two circular discs (1053). The lower circular disc (1053) is fixedly connected to the bottom wall of the sealed cavity (1022), and two buffer plates (109) are fixedly connected to both sides of the drive plate (104).

7. An auxiliary propulsion device for electromagnetic pulse welding according to claim 3, characterized in that, The guide assembly (106) includes a fixing block (1061) mounted on a drive plate (104), a sliding sleeve (1062) fixed on the fixing block (1061), the sliding sleeve (1062) being slidably connected to a sliding rod (1063), and the sliding rod (1063) being fixedly connected to the bottom wall of the sealing cavity (1022).

8. An auxiliary propulsion device for electromagnetic pulse welding according to claim 3, characterized in that, The rotating assembly (201) includes a rotating roller (2011), which is rotatably mounted on the sealed cavity (1022) via a bearing. A cam (2012) is fixedly mounted on the rotating roller (2011), and the upper section of the arc groove (2013) is a straight groove.

9. An auxiliary propulsion device for electromagnetic pulse welding according to claim 3, characterized in that, The converter assembly (202) includes a housing (2021), on which coolers (2035) are installed on both side walls. The housing (2021) is fixedly connected to the top wall of the sealed cavity (1022). A piston rod (2022) is provided inside the housing (2021). A first spring (2023) is fixedly connected between the piston rod (2022) and the inner wall of the housing (2021). The piston rod (2022) extends out of the housing (2021) and is fixed to the auxiliary wheel (2024).

10. An auxiliary propulsion device for electromagnetic pulse welding according to claim 9, characterized in that, The cooling assembly (203) includes a cooling shell (2031), which is fixedly connected to the top wall of the sealed cavity (1022). The interior of the cooling shell (2031) is provided with multiple partitions (2032) arranged in an alternating manner. The alternating partitions (2032) form a serpentine channel. The two ends of the serpentine channel are connected to the two sides of the shell (2021) through a one-way liquid inlet pipe (2033) and a one-way liquid outlet pipe (2034), respectively.

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