A tooling device and processing technology for copper coil upsetting

Abstract

The application discloses a kind of tooling equipment and processing technology for copper coil upsetting, including upsetting die and frame, the top of frame is provided with hydraulic frame body, wherein, longitudinal hydraulic cylinder and transverse hydraulic cylinder with motion direction perpendicular to each other are provided on hydraulic frame body;Upsetting die includes lower die part being arranged on hydraulic frame body, the upper side of lower die part is provided with upper die part being connected with the output end of longitudinal hydraulic cylinder and being driven to lift by it;Upsetting die further includes upsetting press mould being connected with the output end of transverse hydraulic cylinder and exerting transverse upsetting pressure with copper coil terminal under the drive of transverse hydraulic cylinder, and damping mechanism for clamping the terminal of copper coil in longitudinal direction to prevent the terminal from exiting upsetting forming die cavity when transverse upsetting pressure is exerted by upsetting press mould.The application can realize the accurate forming of the terminal of flat copper wire coil with only the width increasing under the condition of unchanged thickness.

Description

Technical Field

[0001] This invention relates to the field of copper coil processing technology, specifically to a tooling and processing technology for upsetting copper coils. Background Technology

[0002] The lead-out terminals of common coils on the market are generally made using methods such as soldering terminals, crimping terminals, or flattening wire diameter to create terminals. These terminals are then bolted to the energized connection point to achieve the purpose of energizing. This is especially true for traction coils in choke transformers used in the railway industry (such as...). Figure 1 As shown in the figure, it is usually made of flat copper wire, and its terminals are currently mostly welded to the coil body by welding.

[0003] For a long time, welding operations have required specialized personnel to use gas welding to weld the terminals, which places high demands on the operators' technical skills and production safety. This not only results in low production efficiency but also makes quality control difficult. Specifically, existing technologies have the following drawbacks: (1) Disadvantages of welding: It requires professional personnel to operate and has high technical requirements; welding is a special operation and has high requirements for production safety and environmental protection; welding is prone to defects such as bubbles, impurities, slag inclusions, and cracks, which directly affect the mechanical and electrical properties of the product; after welding, professional flaw detection is required, which takes up a lot of manpower and time, and the pass rate is not easy to guarantee.

[0004] (2) Disadvantages of crimping: It is easy to have problems such as loose crimping or over-crimping; the mechanical properties such as tensile strength, bending and vibration after crimping are poor; the resistance value at the crimped joint is prone to increase, affecting the electrical performance, and the pass rate is not easy to guarantee.

[0005] (3) Disadvantages of flattening: Flattening the wire diameter directly reduces the mechanical properties of the product, affecting tensile, bending, and vibration resistance; at the same time, it reduces the cross-sectional size of the wire, increases the resistance of the wire, and affects the electrical performance of the coil.

[0006] In summary, there is currently a lack of machining equipment and processes specifically designed for upsetting the terminals of traction coils that can effectively solve the above problems. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a tooling and processing technology for upsetting copper coils, which aims to achieve precise forming of flat copper coil terminals with only an increase in width while keeping the thickness constant.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows.

[0009] A tooling device for upsetting copper coils includes an upsetting die and a frame. A hydraulic frame is provided on the top of the frame, wherein a longitudinal hydraulic cylinder and a transverse hydraulic cylinder with mutually perpendicular directions of movement are provided on the hydraulic frame. The upsetting die includes a lower die part provided on the hydraulic frame, and an upper die part is provided above the lower die part, which is connected to and driven to rise and fall by the output end of the longitudinal hydraulic cylinder. The upper mold portion includes an upper template, and the lower mold portion includes a lower template that engages with the upper template under the drive of a longitudinal hydraulic cylinder. When the upper and lower templates are closed, they form an upsetting forming cavity for laterally accommodating the copper coil terminals and a pressing cavity that communicates with the upsetting forming cavity. The thickness of the upsetting forming cavity is consistent with the thickness of the copper coil raw material, and the width of the end of the upsetting forming cavity away from the copper coil spiral body is greater than the width of the copper coil raw material and communicates with the pressing cavity. The upsetting die also includes an upsetting die connected to the output end of a transverse hydraulic cylinder and driven by the transverse hydraulic cylinder to pass through the die cavity into the upsetting forming die cavity to apply transverse upsetting pressure to the copper coil terminal placed in the upsetting forming die cavity, and a damping mechanism for clamping the copper coil terminal in the longitudinal direction to prevent the terminal from exiting the upsetting forming die cavity when the upsetting die applies transverse upsetting pressure.

[0010] Preferably, the upper mold portion further includes an upper mold base, an upper mold pad, and an upper mold fixing plate connected sequentially from top to bottom; the upper mold plate is fixed on the lower surface of the upper mold fixing plate, and the top of the upper mold base is connected to a longitudinal hydraulic cylinder.

[0011] Preferably, the lower mold portion further includes a lower mold base, a pad, a lower mold pad plate, and a lower mold fixing plate connected sequentially from bottom to top; the pad consists of two pieces arranged opposite each other in the horizontal direction; the lower mold plate is fixed on the upper surface of the lower mold fixing plate.

[0012] Preferably, the lower mold portion further includes several guide pillars vertically upward and fixed to the lower mold fixing plate; the upper mold portion further includes guide sleeves corresponding to each guide pillar, vertically downward and fixed to the upper mold base to slide with the corresponding guide pillars to guide the upper and lower molds when they are closed; the upper mold pad has a first through hole for inserting the corresponding guide pillar at a position opposite to each guide sleeve; the upper mold fixing plate has a second through hole for passing through the corresponding guide pillar at a position opposite to each guide pillar.

[0013] Preferably, the lower mold portion further includes a support column connected between the lower mold base and the lower mold pad to provide intermediate support during mold upsetting.

[0014] Preferably, the upsetting mold further includes an ejector portion for ejecting the formed copper coil from the upsetting forming mold cavity; the ejector portion includes an ejector column that extends longitudinally into the lower mold base and is slidably assembled with the lower mold base, the top of the ejector column is connected to a push plate located above the lower mold base and between two pad blocks, the upper surface of the push plate is provided with an ejector rod fixing plate, an ejector rod is erected on the ejector rod fixing plate, the top of the ejector rod passes through the lower mold pad plate, the lower mold fixing plate and the lower template plate in sequence and is connected to an ejector plate for forming the bottom of the upsetting forming mold cavity and can be longitudinally movably arranged in the lower template plate; the tooling equipment further includes an ejector telescopic cylinder that is arranged in the frame and connected to the bottom end of the ejector column to drive the ejector portion to rise and fall.

[0015] Preferably, the ejection portion further includes a push plate guide post fixed between the lower mold base and the lower mold pad, passing through the push plate and the ejector pin fixing plate, and slidably assembled with the push plate and the ejector pin fixing plate to provide guidance for the push plate. A reset spring is sleeved on the push plate guide post, located between the ejector pin fixing plate and the lower mold pad, for driving the push plate to reset.

[0016] Preferably, the damping mechanism includes an upper anti-slip pattern formed on the lower surface of the upper template and located on the upsetting forming mold cavity near one end of the copper coil spiral body, and a lower anti-slip pattern formed on the upper surface of the top plate and disposed opposite to the upper anti-slip pattern.

[0017] A machining process for upsetting copper coils includes the following steps: S1. In the initial state, the longitudinal hydraulic cylinder drives the upper and lower templates to close, and the transverse hydraulic cylinder drives the upsetting die to be located in the die cavity; S2: Start the equipment. The longitudinal hydraulic cylinder drives the upper template to rise and separate from the lower template. At the same time, the transverse hydraulic cylinder drives the upsetting die to exit from the die cavity. S3: Place one terminal of the copper coil into the upsetting forming cavity of the lower template; S4: The longitudinal hydraulic cylinder drives the upper template to descend and press against the lower template, causing the damping mechanism to press the terminals of the copper coil. S5: The horizontal hydraulic cylinder drives the upsetting die through the die cavity and into the upsetting forming die cavity, applying horizontal upsetting pressure to the terminals of the copper coil, so that its thickness remains unchanged and its width increases, forming the shape of the upsetting forming die cavity; S6: After forming, the horizontal hydraulic cylinder drives the upsetting die to retract, and then the vertical hydraulic cylinder drives the upper template to rise, so that the upper template separates from the lower template; S7: The ejector telescopic cylinder drives the ejector section to eject the upset copper coil. S8: Repeat steps S2 to S7 to upset the other end of the copper coil.

[0018] Due to the adoption of the above technical solutions, the technical progress achieved by this invention is as follows.

[0019] This invention avoids traditional defects by completely changing the processing technology: by upsetting the lead end of the copper coil, the terminal and the coil raw material are integrated, eliminating the processing methods of joining two substrates such as welding and crimping, and completely avoiding welding defects (porosity, impurities, slag inclusions, cracks, etc.), crimping defects (weak crimping, excessive crimping, poor mechanical properties, increased resistance), and flattening defects (smaller wire diameter, decreased mechanical properties, increased resistance).

[0020] This invention achieves precise forming: by designing the thickness of the upsetting forming cavity to be consistent with the raw material, while increasing the width, it can precisely guide the copper material to flow only along the width direction under pressure, successfully realizing the one-piece cold upsetting forming of flat copper wire terminals with "unchanged thickness and increased width", ensuring the continuity of material fibers, thereby significantly improving the conductivity and mechanical strength of the terminals.

[0021] This invention effectively prevents material slippage: It innovatively sets up a damping mechanism to apply an effective longitudinal resistance force to the wiring end of the soft copper material during the non-enclosed upsetting process, which fundamentally solves the problem of the workpiece slipping out of the upsetting forming mold cavity during upsetting, and ensures the stability of the forming process and the yield.

[0022] This invention features smooth demolding, facilitating automated production: the ejector section ensures that the copper coil terminals are smoothly and reliably ejected from the upsetting mold cavity after the initial upsetting process, avoiding the difficulties of manual material handling. Combined with a return spring and push plate guide pillars, the ejection action is automated and precisely reset, significantly improving production efficiency and mold life.

[0023] The invention features a rigid structure and reliable operation: the mold adopts a multi-layer template structure and is equipped with guide pillars, guide sleeves, support pillars, push plate guide pillars, etc., which ensures mold closing accuracy, overall rigidity and smooth ejection movement, making it suitable for automated continuous production.

[0024] This invention lowers the production threshold and improves production efficiency: it eliminates the need for specialized technical personnel (such as professional welders), reduces special inspection processes (such as flaw detection), lowers safety and environmental hazards, and significantly reduces processing time.

[0025] This invention can guarantee the consistency and performance of products: using molds to ensure the consistency of the wiring terminals after upsetting can guarantee the mechanical and electrical performance requirements of the products. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an existing traction coil; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the upsetting die of the present invention; Figure 5 This is a cross-sectional view of the upsetting die of the present invention; Figure 6 This is a first-view exploded view of the lower template, upper template, top plate, and upsetting die of the present invention; Figure 7 This is a second-view exploded view of the lower template, upper template, top plate, and upsetting die of the present invention.

[0027] The components are: 1. Lower mold base, 2. Pad block, 3. Lower mold pad plate, 4. Lower mold fixing plate, 5. Lower template, 6. Upper template, 7. Upper mold fixing plate, 8. Upper mold pad plate, 9. Upper mold base, 10. Ejector plate, 11. Damping mechanism, 12. Guide post, 13. Guide sleeve, 14. Push plate, 15. Ejector rod fixing plate, 16. Support column, 17. Ejector rod, 18. Push plate guide post, 19. Reset spring. 20. Spring, 21. Ejector post, 22. Upsetting die, 23. Upsetting forming die cavity, 24. Pressing die cavity, 25. Upper anti-slip texture, 100. Upsetting die, 101. Lower die part, 102. Upper die part, 103. Ejector part, 200. Frame, 300. Hydraulic component frame, 400. Longitudinal hydraulic cylinder, 500. Transverse hydraulic cylinder, 600. Ejector telescopic cylinder. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] A tooling device for upsetting copper coils, combined with Figures 2 to 3 As shown, it includes an upsetting die 100, a frame 200, a hydraulic component frame 300, a longitudinal hydraulic cylinder 400, a transverse hydraulic cylinder 500, and an ejection telescopic cylinder 600. The upsetting die 100 includes five functional parts: a lower die part 101, an upper die part 102, an upsetting pressure die part, a damping part, and an ejection part 103.

[0030] The frame 200 serves as the load-bearing foundation for the entire equipment, used to fix and support all other components.

[0031] The hydraulic component frame 300 is located on top of the frame 200, forming a stable mounting frame for mounting and supporting the main hydraulic drive components.

[0032] Both the longitudinal hydraulic cylinder 400 and the transverse hydraulic cylinder 500 are mounted on the hydraulic component frame 300, and their movement directions are perpendicular to each other. Specifically, the longitudinal hydraulic cylinder 400 is vertically mounted, with its cylinder body fixed to the upper part of the hydraulic component frame 300. Its piston rod extends vertically downward and is connected to the upper mold part 102, used to drive the lifting and lowering movement of the upper mold part 102. The transverse hydraulic cylinder 500 is horizontally mounted, with its cylinder body fixed to the side of the hydraulic component frame 300. Its piston rod extends horizontally and is connected to the upsetting die part, used to drive the forward and backward movement of the upsetting die part.

[0033] The ejector telescopic cylinder 600 is installed in the frame 200. Its cylinder body is fixed on the frame 200, and its piston rod extends vertically upward and is connected to the ejector part 103 to drive the ejector part 103 to move up and down.

[0034] like Figures 4 to 5 As shown, the upper mold portion 102 includes an upper mold base 9, an upper mold pad 8, an upper mold fixing plate 7, and an upper template 6, which are fixedly connected from top to bottom. The upper template 6 is fixed to the lower surface of the upper mold fixing plate 7 by bolts or other fasteners. The upper mold base 9 is used to connect with a longitudinal hydraulic cylinder 400 to drive the entire upper mold portion 102 to rise and fall.

[0035] The lower mold portion 101 is mounted on the hydraulic component frame 300 and located below the upper mold portion 102. The lower mold portion 101 includes, from bottom to top, a lower mold base 1, a pad 2, a lower mold pad plate 3, a lower mold fixing plate 4, and a lower mold template 5, all fixedly connected in sequence. Two pads 2 are arranged horizontally opposite each other and fixed to the lower mold base 1 to support the upper structure and provide space for the ejector portion 103. The lower mold template 5 is fixed to the upper surface of the lower mold fixing plate 4 and is used for mold closing with the upper mold template 6. The lower mold base 1 is fixed to the hydraulic component frame 300.

[0036] To ensure mold closing accuracy, the lower mold portion 101 also includes several guide pillars 12 fixed on the lower mold fixing plate 4, with the guide pillars 12 arranged vertically upwards. Correspondingly, the upper mold portion 102 also includes several guide sleeves 13 fixed on the upper mold base 9, with the guide sleeves 13 arranged vertically downwards. Each guide sleeve 13 corresponds to each guide pillar 12 and slides in fit, playing a precise guiding and positioning role during mold closing. At the same time, the upper mold base plate 8 has a first through hole longitudinally penetrating at the position opposite to each guide sleeve 13, and the first through hole is used to insert the corresponding guide pillar 12; the upper mold fixing plate 7 has a second through hole longitudinally penetrating at the position opposite to each guide pillar 12, and the second through hole communicates with the first through hole, so that the corresponding guide pillar 12 can pass through smoothly into the guide sleeve 13. In addition, the lower mold part 101 is also provided with a support column 16, which is connected between the lower mold base 1 and the lower mold pad 3. It is used to play an intermediate support role when the mold is upset, thereby enhancing the overall rigidity and stability of the mold during the upset operation.

[0037] When the upper mold plate 6 and the lower mold plate 5 are closed, they together form an upsetting forming cavity 22 for laterally accommodating and shaping the copper coil terminals. Figures 6 to 7 As shown, the thickness of the upsetting forming cavity 22 is exactly the same as the thickness of the flat copper wire used as raw material, while its width at the end away from the coil spiral body is set to be greater than the width of the raw material according to design requirements. At the same time, after the mold is closed, the upper mold plate 6 and the lower mold plate 5 form a pressing cavity 23 at the end of the upsetting forming cavity 22 away from the copper coil spiral body. The pressing cavity 23 is connected to the upsetting forming cavity 22, allowing the upsetting pressing part to pass through.

[0038] The upsetting die part mainly includes the upsetting die 21. The upsetting die 21 is connected to the transverse hydraulic cylinder 500, and its working end can pass through the die cavity 23 and precisely extend into the upsetting forming die cavity 22 to apply upsetting pressure to the copper coil terminal placed in the upsetting forming die cavity 22 from the transverse direction.

[0039] The damping part mainly includes a damping mechanism 11, which is used to clamp the terminal of the copper coil in the longitudinal direction, thereby preventing the terminal from exiting the upsetting forming cavity 22 when the upsetting die 21 applies transverse pressure.

[0040] The ejector portion 103 is used to eject the copper coil from the upsetting forming cavity 22 after forming. Its structure includes: an ejector post 20, which is longitudinally inserted into the lower mold base 1 and slidably assembled with the lower mold base 1, and its bottom is connected to the ejector telescopic cylinder 600; a push plate 14, which is connected to the top of the ejector post 20 and is located above the lower mold base 1 and between two pad blocks 2; an ejector rod fixing plate 15, which is fixed to the upper surface of the push plate 14; an ejector rod 17, which is vertically fixed on the ejector rod fixing plate 15, and its top passes through the lower mold pad plate 3, the lower mold fixing plate 4 and the lower template plate 5 in sequence; and an ejector plate 10, which is fixedly connected to the top of the ejector rod 17 and can be longitudinally movably embedded in the lower template plate 5 to form the bottom of the upsetting forming cavity 22.

[0041] To ensure smooth and precise ejection, the ejection section 103 is also equipped with a push plate guide post 18. The push plate guide post 18 is fixed between the lower mold base 1 and the lower mold pad 3, and passes through the push plate 14 and the ejector pin fixing plate 15, slidingly engaging with the push plate 14 and the ejector pin fixing plate 15. A return spring 19 is also fitted on the push plate guide post 18, located between the ejector pin fixing plate 15 and the lower mold pad 3, to assist the push plate 14 and its connected components in automatically resetting after the ejection action is completed.

[0042] In this embodiment, the damping mechanism 11 employs a preferred anti-slip structure. Specifically, the damping mechanism 11 includes an upper anti-slip groove 24 and a lower anti-slip groove 25. The upper anti-slip groove 24 is directly formed on the lower surface of the upper template 6, located on the upsetting forming mold cavity 22 near the end of the copper coil spiral body. The lower anti-slip groove 25 is formed on the upper surface of the top plate 10, positioned directly opposite the upper anti-slip groove 24. When the mold is closed, the damping mechanism 11 (i.e., the upper anti-slip groove 24 and the lower anti-slip groove 25) will tightly press against the surface of the copper coil terminal placed therein, effectively preventing it from slipping during the subsequent upsetting process by increasing the friction.

[0043] Based on the aforementioned tooling and equipment, this invention provides a processing technology for upsetting copper coils, the specific workflow and principle of which are as follows: S1. Initial state: The equipment is in standby state. The longitudinal hydraulic cylinder 400 drives the upper template 6 and the lower template 5 to close the mold, and the transverse hydraulic cylinder 500 drives the upsetting mold 21 to be located in the mold cavity 23.

[0044] S2. Start-up and preparation: Start the equipment. The longitudinal hydraulic cylinder 400 drives the upper template 6 to rise, so that the upper template 6 separates from the lower template 5. At the same time, the transverse hydraulic cylinder 500 drives the upsetting die 21 to retract from the die cavity 23 back to the initial position.

[0045] S3. Placing the workpiece: The operator places one terminal of the copper coil in the predetermined position within the upsetting forming cavity 22 of the lower template 5, where it is supported by the top plate 10.

[0046] S4. Mold Closure and Damping: The longitudinal hydraulic cylinder 400 drives the upper mold plate 6 to descend, and the guide post 12 and guide sleeve 13 cooperate to guide it, so that the upper mold plate 6 and the lower mold plate 5 are precisely closed. After the mold is closed, the upper anti-slip texture 24 on the lower surface of the upper mold plate 6 and the lower anti-slip texture 25 on the upper surface of the ejector plate 10 are tightly pressed against the upper and lower surfaces of the terminal, applying longitudinal pressure to form damping and firmly fixing the terminal.

[0047] S5. Upsetting: The transverse hydraulic cylinder 500 drives the upsetting die 21 to move forward. Its working end enters the upsetting die cavity 22 through the die cavity 23 and presses down on the end of the copper coil terminal, applying transverse upsetting pressure. Under this pressure, the copper material of the terminal is constrained by the upsetting die cavity 22 and can only flow in the width direction and fill the upsetting die cavity 22 until it is fully formed, resulting in a shape with constant thickness and increased width. During this process, the damping mechanism 11 effectively prevents the terminal from sliding out of the die.

[0048] S6. Mold opening and retraction: After the upsetting is completed, the horizontal hydraulic cylinder 500 drives the upsetting die 21 to retract to the initial position; then, the vertical hydraulic cylinder 400 drives the upper template 6 to rise, so that the upper template 6 separates from the lower template 5.

[0049] S7. Ejecting the workpiece: The ejector telescopic cylinder 600 moves upward, driving the ejector column 20, push plate 14, ejector rod fixing plate 15, and ejector rod 17 to rise together, thereby pushing the ejector plate 10 to slide upward within the lower template 5, ejecting the upsetting copper coil terminal from the upsetting die cavity 22. After ejection, the ejector telescopic cylinder 600 falls back, and with the assistance of the return spring 19, the push plate 14, ejector rod fixing plate 15, ejector rod 17, and ejector plate 10 automatically return to their initial positions.

[0050] S8. Cyclic processing: Repeat steps S2 to S7 above to perform the same upsetting process on the other end of the copper coil until all processing is completed.

Claims

1. A tooling device for upsetting copper coils, comprising an upsetting die (100) and a frame (200), wherein a hydraulic frame (300) is provided on the top of the frame (200), characterized in that: The hydraulic component frame (300) is provided with a longitudinal hydraulic cylinder (400) and a transverse hydraulic cylinder (500) whose directions of movement are perpendicular to each other; the upsetting die (100) includes a lower die part (101) provided on the hydraulic component frame (300), and an upper die part (102) is provided above the lower die part (101) and connected to the output end of the longitudinal hydraulic cylinder (400) and driven to rise and fall by it. The upper mold part (102) includes an upper mold plate (6), and the lower mold part (101) includes a lower mold plate (5) that is engaged with the upper mold plate (6) under the drive of a longitudinal hydraulic cylinder (400); when the upper mold plate (6) and the lower mold plate (5) are engaged, they form an upsetting forming cavity (22) for laterally accommodating the copper coil terminal and a pressing cavity (23) that communicates with the upsetting forming cavity (22). The thickness of the upsetting forming cavity (22) is consistent with the thickness of the copper coil raw material. The width of the end of the upsetting forming cavity (22) away from the copper coil spiral body is greater than the width of the copper coil raw material and communicates with the pressing cavity (23). The upsetting die (100) also includes an upsetting die (21) connected to the output end of the transverse hydraulic cylinder (500) and driven by the transverse hydraulic cylinder (500) to pass through the die cavity (23) and enter the upsetting forming die cavity (22) to apply transverse upsetting pressure to the copper coil terminal placed in the upsetting forming die cavity (22), and a damping mechanism (11) for clamping the copper coil terminal in the longitudinal direction to prevent the terminal from exiting the upsetting forming die cavity (22) when the upsetting die (21) applies transverse upsetting pressure.

2. The tooling equipment for upsetting copper coils according to claim 1, characterized in that: The upper mold part (102) also includes an upper mold base (9), an upper mold pad (8) and an upper mold fixing plate (7) connected from top to bottom; the upper mold template (6) is fixed on the lower surface of the upper mold fixing plate (7), and the top of the upper mold base (9) is connected to the longitudinal hydraulic cylinder (400).

3. The tooling equipment for upsetting copper coils according to claim 2, characterized in that: The lower mold part (101) also includes a lower mold base (1), a pad (2), a lower mold pad plate (3) and a lower mold fixing plate (4) connected from bottom to top; the pad (2) consists of two pieces arranged opposite each other in the horizontal direction; the lower mold plate (5) is fixed on the upper surface of the lower mold fixing plate (4).

4. The tooling equipment for upsetting copper coils according to claim 3, characterized in that: The lower mold part (101) also includes several guide posts (12) that are vertically upward and fixed on the lower mold fixing plate (4); the upper mold part (102) also includes guide sleeves (13) that are vertically downward and fixed on the upper mold base (9) in correspondence with each guide post (12) to slide with the corresponding guide post (12) to guide the upper and lower molds when they are closed; the upper mold pad (8) is provided with a first through hole for inserting the corresponding guide post (12) at the position opposite to each guide sleeve (13); the upper mold fixing plate (7) is provided with a second through hole for passing through the corresponding guide post (12) at the position opposite to each guide post (12).

5. The tooling equipment for upsetting copper coils according to claim 3, characterized in that: The lower mold portion (101) also includes a support column (16) connected between the lower mold base (1) and the lower mold pad (3) to provide intermediate support during mold upsetting.

6. The tooling equipment for upsetting copper coils according to claim 3, characterized in that: The upsetting mold (100) further includes an ejector portion (103) for ejecting the formed copper coil from the upsetting forming mold cavity (22); the ejector portion (103) includes an ejector column (20) that extends longitudinally into the lower mold base (1) and is slidably assembled with the lower mold base (1), the top of the ejector column (20) is connected to a push plate (14) located above the lower mold base (1) and between two pad blocks (2), the upper surface of the push plate (14) is provided with an ejector rod fixing plate (15), and the ejector rod... A top rod (17) is erected on the rod fixing plate (15). The top of the top rod (17) passes through the lower mold pad plate (3), the lower mold fixing plate (4) and the lower template plate (5) in sequence and is connected to the top plate (10) which is used to form the bottom of the upsetting forming cavity (22) and can be longitudinally moved in the lower template plate (5). The tooling equipment also includes an ejection telescopic cylinder (600) which is set in the frame (200) and connected to the bottom end of the ejection column (20) to drive the ejection part (103) to rise and fall.

7. The tooling equipment for upsetting copper coils according to claim 6, characterized in that: The ejection portion (103) further includes a push plate guide post (18) fixed between the lower mold base (1) and the lower mold pad (3) and passing through the push plate (14) and the ejector rod fixing plate (15) and slidably assembled with the push plate (14) and the ejector rod fixing plate (15) to provide guidance for the push plate (14). A reset spring (19) is sleeved on the push plate guide post (18) and located between the ejector rod fixing plate (15) and the lower mold pad (3) for driving the push plate (14) to reset.

8. The tooling equipment for upsetting copper coils according to claim 6, characterized in that: The damping mechanism (11) includes an upper anti-slip pattern (24) on the lower surface of the upper template (6) and located on the upsetting forming cavity (22) near one end of the copper coil spiral body, and a lower anti-slip pattern (25) on the upper surface of the top plate (10) and opposite to the upper anti-slip pattern.

9. A machining process for upsetting copper coils, using the tooling equipment as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1. In the initial state, the longitudinal hydraulic cylinder (400) drives the upper template (6) and the lower template (5) to close the mold, and the transverse hydraulic cylinder (500) drives the upsetting die (21) to be located in the mold cavity (23); S2: Start the equipment, the longitudinal hydraulic cylinder (400) drives the upper template (6) to rise to separate from the lower template (5), and at the same time the transverse hydraulic cylinder (500) drives the upsetting die (21) to exit from the die cavity (23); S3: Place one end of the copper coil into the upsetting forming cavity (22) of the lower template (5); S4: The longitudinal hydraulic cylinder (400) drives the upper template (6) to descend and press against the lower template (5), so that the damping mechanism (11) presses the terminal of the copper coil. S5: The horizontal hydraulic cylinder (500) drives the upsetting die (21) through the die cavity (23) into the upsetting forming die cavity (22), and applies horizontal upsetting pressure to the terminal of the copper coil, so that its thickness remains unchanged and its width increases, forming the shape of the upsetting forming die cavity (22); S6: After forming, the horizontal hydraulic cylinder (500) drives the upsetting die (21) to retract, and then the vertical hydraulic cylinder (400) drives the upper template (6) to rise, so that the upper template (6) separates from the lower template (5); S7: The ejector telescopic cylinder (600) drives the ejector part (103) to move and eject the upsetting copper coil; S8: Repeat steps S2 to S7 to upset the other end of the copper coil.

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