A copper retainer special-shaped hole punch forming equipment

Abstract

The present application relates to the technical field of stamping die, and discloses a copper retainer special-shaped hole stamping forming equipment, which comprises a punching die, an auxiliary heat-assisted punching mechanism is installed on the upper die part of the punching die, and an auxiliary cooling assembly is installed on the lower die part; the auxiliary heat-assisted punching mechanism comprises a plurality of stamping heads, an electric heating control module and a heating coil, the shape of each stamping head is completely matched with the special-shaped hole of the lower die and is axially aligned, a slideably connected auxiliary heating head is arranged at the center position of the bottom wall of the stamping head, and the initial state of the auxiliary heating head is protruding downward from the bottom wall of the stamping head; the heating coil is embedded in the inside of the auxiliary heating head and is electrically connected with the electric heating control module, and the electric heating control module is used for controlling the heating temperature and start-stop of the heating coil; the present application realizes smooth plastic shearing flow of the material by accurately and locally heating and softening the punching point by the auxiliary heating head, instead of "tearing" fracture, so that burrs, micro-cracks and tearing are fundamentally eliminated, and a smooth and bright shearing band is obtained.

Description

Technical Field

[0001] This invention relates to the field of stamping dies, and more specifically, to a stamping equipment for forming irregular holes in a copper cage. Background Technology

[0002] Copper cages are widely used in precision machinery, aerospace, and other fields. They are core components that ensure the high-precision and high-reliability operation of equipment. In precision machinery, their irregular hole structure directly affects the transmission efficiency and lifespan of components such as bearings and gears. In aerospace, they must meet the requirements for dimensional stability and corrosion resistance under extreme operating conditions such as engines and navigation systems. The stamping forming of irregular holes is a key manufacturing step, requiring a combined process of hot-assisted stamping and rapid cooling.

[0003] Copper materials, especially high-strength copper alloys, are prone to defects such as burrs, tears, and microcracks at the punched edges during stamping at room temperature due to their high hardness and low plasticity. These defects not only affect the surface quality and aesthetics of the product, but more importantly, they become stress concentration points, reducing the fatigue strength and service life of the cage, especially under high-speed, high-load operating conditions, which may lead to premature failure. Therefore, we propose a copper cage irregular hole stamping forming equipment. Summary of the Invention

[0004] This invention provides a copper cage irregular hole stamping forming equipment, which solves the technical problem in related technologies that when stamping at room temperature, defects such as burrs, tears, and microcracks are easily generated at the edge of the punched hole due to its high hardness and low plasticity.

[0005] This invention provides a copper cage irregular hole stamping forming equipment, including: a punching die, an auxiliary heating punching mechanism installed on the upper die part of the punching die, and an auxiliary cooling component installed on the lower die part; The auxiliary heating and punching mechanism includes several punching heads, an electric heating control module, and a heating coil. The shape of each punching head is perfectly matched with the irregular hole of the lower die and axially aligned. An auxiliary heating head is slidably connected at the center of the bottom wall of the punching head. The initial state of the auxiliary heating head is that it protrudes downward from the bottom wall of the punching head. The heating coil is embedded inside the auxiliary heating head and electrically connected to the electric heating control module. The electric heating control module is used to control the heating temperature and start / stop of the heating coil. The auxiliary cooling component includes a pressure plate, which is rotatably mounted on the lower die of the punching die via a rotating shaft, and the initial state of the pressure plate forms an acute angle with the surface of the lower die; the pressure plate is provided with irregular holes that correspond one-to-one with the irregular holes of the lower die, and each irregular hole is surrounded by a flow channel. When the upper die descends, it pushes the pressure plate to rotate around the pivot and presses the copper sheet against the surface of the lower die; then the auxiliary heating head first contacts the punching position of the copper sheet, and the heating coil quickly heats the area to the specified high temperature. After that, the punching head continues to apply pressure to complete the punching of the copper sheet at a high temperature. When the upper mold is raised, the cooling medium rushes into and flows through the area around the irregular hole of the copper sheet through the mass channel, achieving rapid cooling.

[0006] Furthermore, a bottom module is provided at the center of the lower die of the punching die, and a clamping groove is opened at the center of the bottom module. All the irregular holes on the lower die are arrayed in the clamping groove, and the depth of the clamping groove is the same as the thickness of the copper sheet to be punched, so as to press the copper sheet to be punched in the clamping groove. The front wall of the lower die of the punching die is provided with a slag outlet, and the slag outlet is connected to all the irregular holes on the lower die, so as to collect the residual copper sheet after punching. The bottom module is also provided with a top plate column, which is used to lift the pressure plate.

[0007] Furthermore, the pressure plate consists of two layers, namely an upper plate and a lower plate. The upper and lower parts of the flow channel are respectively located in the upper plate and the lower plate, and elastic sheets are fixedly installed in both the upper and lower parts inside the flow channel. The two elastic sheets are fixed to the upper plate and the lower plate respectively. The cooling medium flows between the two elastic sheets. When the supply of cooling medium to the flow channel is stopped, all the cooling medium is squeezed out through the two elastic sheets.

[0008] Furthermore, the auxiliary cooling component also includes an external box, in which a storage tank is fixedly installed at the center. A first pump body and a second pump body are respectively installed at both ends of the storage tank. The liquid outlet end of the first pump body is connected to a first valve, and the liquid inlet end of the second pump body is connected to a second valve.

[0009] Furthermore, the outlet end of the second pump body is connected to the storage tank, the inlet end of the second valve is connected to a mass extraction pipe, and the inlet end of the mass extraction pipe is connected to the outlet end of the mass passage. The cooling medium in the mass passage is reintroduced into the storage tank through the second pump body.

[0010] Furthermore, the inlet end of the first pump body is connected to the storage tank, the outlet end of the first valve is connected to the mass supply pipe, and the outlet end of the mass supply pipe is connected to the inlet end of the mass passage. The cooling medium in the storage tank is injected into the mass passage as needed through the first pump body.

[0011] Furthermore, the auxiliary heating and stamping mechanism also includes a stamping main block, with several stamping heads arrayed on the lower wall of the stamping main block. The electric heating control module is fixedly installed inside the stamping main block, and the electric heating control module is connected to the heating coil through a control wire.

[0012] Furthermore, the inner wall of the stamping head is also fixedly provided with a heat insulation layer, and the heat insulation layer is provided in several layers, which provides all-round isolation between the auxiliary heating head and the stamping head.

[0013] Furthermore, four identical limiting cylinders are provided above the auxiliary heating head. The top of the limiting cylinder is fixedly connected to the top of the heat insulation layer. A lifting column is slidably provided inside the limiting cylinder, and a push spring is provided inside the lifting column. The bottom end of the lifting column is fixedly connected to the upper wall of the auxiliary heating head, which is used to push the auxiliary heating head to contact the copper sheet before the stamping head.

[0014] Furthermore, a retractable cylinder is provided on the front side of the stamping main block. The retractable cylinder is embedded inside the upper die. A push plate column is slidably provided inside the retractable cylinder. A push plate spring is fixedly provided on the top of the push plate column. Before the auxiliary heating head contacts the copper sheet, it pushes the pressure plate to press the copper sheet, and then controls the pressure plate to unfold after the upper die has fully reset.

[0015] The beneficial effects of this invention are as follows: This invention uses an auxiliary heating head to precisely and locally heat and soften the punched points, enabling the material to achieve smooth plastic shear flow rather than "tearing" and breaking. This fundamentally eliminates burrs, microcracks, and tears, resulting in a smooth and bright shear band. After stamping, the high-temperature area is rapidly and forcibly cooled through a flow channel, which effectively suppresses the springback and deformation of the material caused by the release of thermal stress and stabilizes the geometric dimensions after stamping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the punching die structure from the right side; Figure 3 This is a schematic diagram of the stamping head structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the stamping head of the present invention; Figure 5 This is a schematic diagram of the internal structure of the auxiliary heating head of the present invention; Figure 6 This is a schematic diagram of the pressure plate structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the pressure plate of the present invention; Figure 8 This is the invention Figure 7 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the internal structure of the peripheral box of the present invention.

[0017] In the diagram: 11. Punching die; 13. Slag outlet; 2. Auxiliary heating and punching mechanism; 21. Main stamping block; 22. Punching head; 23. Electric heating control module; 24. Control wire; 25. Insulation layer; 26. Limiting cylinder; 27. Lifting column; 28. Auxiliary heating head; 29. ​​Heating coil; 201. Pusher spring; 31. Bottom module; 32. Pressure plate; 321. Upper plate; 322. Lower plate; 33. Retracting column cylinder; 34. Push plate column; 35. Push plate spring; 36. Clip slot; 37. Top plate column; 38. External device box; 39. Mass supply pipe; 41. Mass extraction pipe; 42. Mass passage; 43. Elastic sheet; 44. Storage tank; 45. First pump body; 46. First valve; 47. Second pump body; 48. Second valve. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] like Figures 1-9 As shown, a copper cage irregular hole punching forming equipment includes: a punching die 11, the upper die part of the punching die 11 is equipped with an auxiliary heating punching mechanism 2, and the lower die part is equipped with an auxiliary cooling component. The auxiliary heating and punching mechanism 2 includes several punching heads 22, an electric heating control module 23, and a heating coil 29. The shape of each punching head 22 is perfectly matched with the irregular hole of the lower die and axially aligned. An auxiliary heating head 28 is provided at the center of the bottom wall of the punching head 22 and can be slidably connected. The initial state of the auxiliary heating head 28 is that it protrudes downward from the bottom wall of the punching head 22. The heating coil 29 is embedded in the auxiliary heating head 28 and electrically connected to the electric heating control module 23. The electric heating control module 23 is used to control the heating temperature and start / stop of the heating coil 29. The auxiliary cooling component includes a pressure plate 32, which is rotatably mounted on the lower die of the punching die 11 via a rotating shaft, and the initial state of the pressure plate 32 forms an acute angle with the surface of the lower die; the pressure plate 32 is provided with irregular holes that correspond one-to-one with the irregular holes of the lower die, and each irregular hole is surrounded by a flow channel 42. When the upper die descends, it pushes the pressure plate 32 to rotate around the pivot and presses the copper sheet onto the surface of the lower die; then the auxiliary heating head 28 first contacts the punching position of the copper sheet, and the heating coil 29 quickly heats the area to the specified high temperature. After that, the punching head 22 continues to apply pressure to complete the punching of the copper sheet at a high temperature. When the upper mold is raised, the cooling medium is injected through the flow channel 42 and flows through the area around the irregular hole of the copper sheet to achieve rapid cooling.

[0020] The lower die of the punching die 11 has a bottom module 31 at its center. The bottom module 31 has a clamping groove 36 at its center. All the irregular holes on the lower die are arranged in the clamping groove 36, and the depth of the clamping groove 36 is the same as the thickness of the copper sheet to be punched. The clamping plate 32 is used to press the copper sheet to be punched into the clamping groove 36. The front wall of the lower die of the punching die 11 has a slag outlet 13, which is connected to all the irregular holes on the lower die. It is used to collect the residual copper sheet after punching. The bottom module 31 also has a top plate column 37, which is used to lift the clamping plate 32.

[0021] The pressure plate 32 consists of two layers, namely an upper plate 321 and a lower plate 322. The upper and lower parts of the flow channel 42 are respectively located in the upper plate 321 and the lower plate 322. Both the upper and lower parts of the flow channel 42 are fixedly provided with elastic sheets 43. The two elastic sheets 43 are fixed to the upper plate 321 and the lower plate 322 respectively. The cooling medium flows between the two elastic sheets 43. When the supply of cooling medium to the flow channel 42 is stopped, all the cooling medium is squeezed out through the two elastic sheets 43.

[0022] The auxiliary cooling component also includes an external box 38, in which a storage tank 44 is fixedly installed at the center. A first pump body 45 and a second pump body 47 are respectively installed at both ends of the storage tank 44. The liquid outlet end of the first pump body 45 is connected to a first valve 46, and the liquid inlet end of the second pump body 47 is connected to a second valve 48.

[0023] The outlet end of the second pump body 47 is connected to the storage tank 44, and the inlet end of the second valve 48 is connected to the extraction pipe 41. The inlet end of the extraction pipe 41 is connected to the outlet end of the mass passage 42. The cooling medium in the mass passage 42 is reintroduced into the storage tank 44 through the second pump body 47.

[0024] The inlet end of the first pump body 45 is connected to the storage tank 44, and the outlet end of the first valve 46 is connected to the mass supply pipe 39. The outlet end of the mass supply pipe 39 is connected to the inlet end of the mass passage 42. The cooling medium in the storage tank 44 is injected into the mass passage 42 as needed through the first pump body 45.

[0025] The auxiliary heating and stamping mechanism 2 also includes a stamping main block 21, with several stamping heads 22 arrayed on the lower wall of the stamping main block 21. The electric heating control module 23 is fixedly installed inside the stamping main block 21, and the electric heating control module 23 is connected to the heating coil 29 through a control wire 24.

[0026] The inner wall of the stamping head 22 is also fixedly provided with a heat insulation layer 25, and the heat insulation layer 25 is provided with several layers. The heat insulation layer 25 provides all-round isolation between the auxiliary heating head 28 and the stamping head 22.

[0027] Four identical limiting cylinders 26 are provided above the auxiliary heating head 28. The top of the limiting cylinder 26 is fixedly connected to the top of the heat insulation layer 25. A lifting column 27 is slidably provided inside the limiting cylinder 26, and a push spring 201 is provided inside the lifting column 27. The bottom end of the lifting column 27 is fixedly connected to the upper wall of the auxiliary heating head 28, which is used to push the auxiliary heating head 28 to contact the copper sheet before the stamping head 22.

[0028] A column return cylinder 33 is provided on the front side of the stamping main block 21. The column return cylinder 33 is embedded in the interior of the upper mold. A push plate column 34 is slidably provided inside the column return cylinder 33. A push plate spring 35 is fixedly provided on the top of the push plate column 34. Before the auxiliary heating head 28 contacts the copper sheet, it pushes the pressure plate 32 to press the copper sheet, and then controls the pressure plate 32 to unfold after the upper mold has fully reset.

[0029] Initial preparation phase: The copper sheet to be punched is placed in the retaining groove 36 of the lower die of the punching die 11. The depth of the retaining groove 36 is the same as the thickness of the copper sheet, which serves as a preliminary positioning function.

[0030] At this time, under the action of the torsion spring in the rotating shaft, the initial state of the pressure plate 32 forms an acute angle with the surface of the lower mold, which facilitates the insertion of the copper sheet.

[0031] In the upper die of the punching die 11, the auxiliary heating head 28 protrudes downward from the bottom wall of the punching head 22 under the pushing force of the pusher spring 201, and is in a standby state.

[0032] Upper mold descending and clamping stage: The stamping equipment drives the upper die to move downwards. First, the push plate column 34 slides within the retracting column cylinder 33, compressing the push plate spring 35. This causes the pressure plate 32 to contact and rotate around its axis until the pressure plate 32 flattens and firmly presses the copper sheet into the clamping groove 36 of the bottom module 31. This action ensures that the copper sheet will not shift or deform during the stamping process. Subsequently, the upper die continues to move downwards.

[0033] Local heating and stamping stage: Because the auxiliary heating head 28 initially protrudes, it will contact the copper sheet at the punching position before the stamping head 22. The lifting column 27 slides within the limiting cylinder 26 and begins to compress the pusher spring 201.

[0034] At the instant or before the auxiliary heating head 28 contacts the copper sheet, the electrothermal control module 23 is activated, supplying power to the heating coil 29 embedded inside the auxiliary heating head 28 via the control wire 24, rapidly heating it to a preset high temperature. The high temperature is quickly conducted to a small local area of ​​the copper sheet, causing it to soften instantly, greatly increasing its plasticity, while significantly reducing its yield strength.

[0035] Afterwards, the upper die continues to descend, and the auxiliary heating head 28 overcomes the resistance of the pusher spring 201, retracting into the punch head 22. The punch head 22 applies pressure to the softened copper sheet area. Because the material is in a high-temperature softened state, the required punching force is greatly reduced, and the punch head 22 can easily and accurately complete the punching of irregular holes, forming a high-quality hole shape that perfectly matches the irregular hole of the lower die. The waste generated during punching is discharged from the slag outlet 13.

[0036] During this process, the heat insulation layer 25 effectively prevents the heat from the auxiliary heating head 28 from being transferred to the stamping head 22 and the stamping block 21, protecting the mold body and preventing its performance from deteriorating due to heat.

[0037] Upper mold recovery and rapid cooling stage: After the stamping is completed, the upper die begins to rise, and the stamping head 22 and the auxiliary heating head 28 leave the workpiece first.

[0038] At this time, the first pump body 45 starts and opens the first valve 46, pumping the cooling medium in the storage tank 44, such as liquid nitrogen or cryogenic coolant, into the mass passage 42 through the mass supply pipe 39.

[0039] The cooling medium flows at high speed through the passage 42 between the two elastic sheets 43, transferring the low temperature to the entire pressure plate 32. At this point, the contact point between the pressure plate 32 and the copper sheet forms the retainer after punching. The low-temperature impact on the edge area of ​​the newly formed irregular hole, which still has residual heat, achieves rapid and uniform forced cooling. This process effectively "shapes" the microstructure of the copper material, preventing it from springing back or deforming under natural cooling, and stabilizing the stamping accuracy.

[0040] When the cooling process ends, the first pump body 45 and the first valve 46 are closed. The second pump body 47 and the second valve 48 may then be activated to pump the residual cooling medium in the mass passage 42 back to the mass storage tank 44 through the mass extraction pipe 41, thus achieving medium recycling. At this time, the two elastic sheets 43 adhere to each other after losing internal medium pressure, squeezing out the residual medium in the passage and ensuring no residue remains.

[0041] The first pump body 45 and the second pump body 47 can also work simultaneously to play a circulation role. In this case, the second pump body 47 should stop working later than the first pump body 45 to extract the residual cooling medium in the flow channel 42 and reduce the impact on the next punching.

[0042] Finally, as the upper mold fully resets, the pressure plate 32 raises the top plate pillar 37 back to its initial acute angle state, facilitating the removal of the finished workpiece and the insertion of a new copper sheet to begin the next work cycle.

[0043] Smooth shearing and defect elimination: The auxiliary heating head 28 and heating coil 29 precisely and locally heat and soften the punching point, causing the material to undergo continuous and smooth shear plastic flow under the action of the punch head 22, rather than the "tearing" fracture of cold stamping. This can significantly reduce or even completely eliminate burrs and obtain a smooth, bright shear band with extremely high surface quality, achieving an effect similar to fine blanking.

[0044] Suppressing microcracks and improving fatigue strength: The heat-assisted plastic deformation process greatly reduces the generation of microcracks, eliminating the source of fatigue crack initiation in high-speed operating cages from the root, and significantly improving the reliability and service life of the product.

[0045] Instant cooling and shaping: After stamping, cooling medium is introduced through the flow channel 42 to rapidly cool the high-temperature area, effectively suppressing the springback and deformation of the material caused by the release of thermal stress, and stabilizing the geometric dimensions after stamping.

[0046] Relaxing internal stress: The thermoplastic deformation process helps the material's crystal lattice recover and rearrange, which can relax the internal stress generated by severe deformation.

[0047] High dimensional stability: Thanks to the effective relaxation of internal stress, the stamped cage workpiece has less deformation and better flatness and roundness; and in subsequent use or storage, the risk of deformation caused by stress release is greatly reduced, resulting in extremely high dimensional stability.

[0048] Significantly reduces stamping load and wear: Since stamping occurs in a softened material state, the required stamping force is significantly reduced. This not only reduces the tonnage requirements of the stamping equipment and saves energy, but more importantly, it greatly reduces the impact load on the stamping head 22 and the lower die, effectively extending the service life of the entire punching die 11.

[0049] Localized heating and softening: Precise localized heating of the punching point is achieved through auxiliary heating head 28 and heating coil 29, increasing the plasticity of the copper material and making it less prone to micro-cracks, burrs, and tears during stamping. This is especially important for complex irregular holes, ensuring clear outlines and accurate dimensions.

[0050] Instant cooling and shaping: After stamping, cooling medium is introduced through the flow channel 42 to quickly cool the high-temperature area, effectively suppressing the springback and deformation of the material caused by the release of thermal stress, stabilizing the geometric dimensions after stamping, and ensuring the high precision and consistency of the copper cage products.

[0051] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A copper cage irregular hole stamping forming equipment, characterized in that, include: A punching die (11) is provided with an auxiliary heating punching mechanism (2) installed on the upper die part and an auxiliary cooling component installed on the lower die part. The auxiliary heating and punching mechanism (2) includes several punching heads (22), an electric heating control module (23), and a heating coil (29). The shape of each punching head (22) is completely matched with the irregular hole of the lower die and axially aligned. An auxiliary heating head (28) is provided at the center of the bottom wall of the punching head (22). The initial state of the auxiliary heating head (28) is that it protrudes downward from the bottom wall of the punching head (22). The heating coil (29) is embedded in the auxiliary heating head (28) and electrically connected to the electric heating control module (23). The electric heating control module (23) is used to control the heating temperature and start / stop of the heating coil (29). The auxiliary cooling component includes a pressure plate (32), which is rotatably mounted on the lower die of the punching die (11) via a rotating shaft, and the initial state of the pressure plate (32) forms an acute angle with the surface of the lower die; the pressure plate (32) is provided with irregular holes that correspond one-to-one with the irregular holes of the lower die, and each irregular hole is surrounded by a flow channel (42). The pressure plate (32) consists of two layers, namely an upper plate (321) and a lower plate (322). The upper and lower parts of the flow channel (42) are respectively in the upper plate (321) and the lower plate (322). Both the upper and lower parts of the flow channel (42) are fixedly provided with elastic sheets (43). The two elastic sheets (43) are respectively fixed to the upper plate (321) and the lower plate (322). The cooling medium flows between the two elastic sheets (43). When the supply of cooling medium to the flow channel (42) is stopped, all the cooling medium is squeezed out through the two elastic sheets (43). The auxiliary cooling component also includes an external box (38), and a storage tank (44) is fixedly installed at the center of the external box (38). A first pump body (45) and a second pump body (47) are respectively installed at both ends of the storage tank (44). The liquid outlet end of the first pump body (45) is connected to a first valve (46), and the liquid inlet end of the second pump body (47) is connected to a second valve (48). The outlet end of the second pump body (47) is connected to the storage tank (44), the inlet end of the second valve (48) is connected to the extraction pipe (41), and the inlet end of the extraction pipe (41) is connected to the outlet end of the mass channel (42). The cooling medium in the mass channel (42) is reintroduced into the storage tank (44) through the second pump body (47). The inlet end of the first pump body (45) is connected to the storage tank (44), the outlet end of the first valve (46) is connected to the mass supply pipe (39), and the outlet end of the mass supply pipe (39) is connected to the inlet end of the mass passage (42). The cooling medium in the storage tank (44) is injected into the mass passage (42) as needed through the first pump body (45). The auxiliary heating and stamping mechanism (2) also includes a stamping main block (21), and several stamping heads (22) are arrayed on the lower wall of the stamping main block (21). The electric heating control module (23) is fixedly installed inside the stamping main block (21), and the electric heating control module (23) is connected to the heating coil (29) through a control wire (24). Four identical limiting cylinders (26) are provided above the auxiliary heating head (28). The top of the limiting cylinder (26) is fixedly connected to the top of the heat insulation layer (25). A lifting column (27) is slidably provided inside the limiting cylinder (26), and a push spring (201) is provided inside the lifting column (27). The bottom end of the lifting column (27) is fixedly connected to the upper wall of the auxiliary heating head (28) to push the auxiliary heating head (28) to contact the copper sheet before the stamping head (22). A column receiving cylinder (33) is provided on the front side of the stamping main block (21). The column receiving cylinder (33) is embedded in the interior of the upper mold. A push plate column (34) is slidably provided inside the column receiving cylinder (33). A push plate spring (35) is fixedly provided on the top of the push plate column (34). Before the auxiliary heating head (28) contacts the copper sheet, it pushes the pressure plate (32) to press the copper sheet, and then controls the pressure plate (32) to unfold after the upper mold has fully reset. When the upper die descends, it pushes the pressure plate (32) to rotate around the pivot and presses the copper sheet onto the surface of the lower die; then the auxiliary heating head (28) first contacts the punching position of the copper sheet, and the copper sheet in front of the auxiliary heating head (28) is quickly heated to the specified high temperature by the heating coil (29); then the punching head (22) continues to apply pressure and completes the punching of the copper sheet at high temperature. When the upper mold is raised, the cooling medium is rushed into and flows through the area around the irregular hole of the copper sheet through the channel (42) to achieve rapid cooling.

2. The copper cage irregular hole stamping forming equipment according to claim 1, characterized in that, The lower die of the punching die (11) is provided with a bottom module (31) at the center position. The bottom module (31) is provided with a clamping groove (36) at the center position. All the irregular holes on the lower die are arranged in the clamping groove (36), and the depth of the clamping groove (36) is the same as the thickness of the copper sheet to be punched. The clamping plate (32) is used to press the copper sheet to be punched in the clamping groove (36). The front wall of the lower die of the punching die (11) is provided with a slag outlet (13), and the slag outlet (13) is connected to all the irregular holes on the lower die. It is used to collect the residual copper sheet after punching. The bottom module (31) is also provided with a top plate column (37) for lifting the clamping plate (32).

3. The copper cage irregular hole stamping forming equipment according to claim 2, characterized in that, The inner wall of the stamping head (22) is also fixedly provided with a heat insulation layer (25), and the heat insulation layer (25) is provided with several layers. The heat insulation layer (25) provides all-round isolation between the auxiliary heating head (28) and the stamping head (22).

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