A stamping forming device for charging head of new energy vehicle

Abstract

A stamping and forming device for a charging head of a new energy vehicle relates to the field of production of accessories for new energy vehicles, and includes an upper mold mechanism and a lower mold mechanism. The upper mold mechanism and the lower mold mechanism are connected to each other by setting a hydraulic rod. The upper mold mechanism includes an upper mold plate and an upper mold core. The lower mold mechanism includes a lower mold plate, a heating assembly, and a plurality of independently spliced ​​lower mold core assemblies. The lower mold plate is arranged below the upper mold plate, the lower mold core is arranged on the upper surface of the lower mold plate, and the heating assembly is arranged inside the lower mold core. The present invention arranges an array of lower mold core assemblies on the lower mold, and each lower mold core assembly controls the temperature individually, so that the temperature distribution in the mold is more balanced, and the injection plastic is kept in a molten state at all times during the flow process in the lower mold core, so as to prevent the injection plastic from solidifying prematurely, reduce the occurrence of injection plastic blockage, make the injection plastic flow more freely, and improve the hot pressing forming rate of the charging head. The upper mold core adopts an integral structure, so that the outer surface of the charging head is smoother and neater.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy automobile parts production, and in particular to a new energy automobile charging head stamping and forming device. Background Art

[0002] With the global emphasis on environmental protection and sustainable development, the new energy vehicle industry has developed rapidly. As a key interface component for vehicle charging, the quality and production efficiency of new energy vehicle chargers are crucial, which also puts forward new requirements for the corresponding mold technology. In order to meet different charging standards and user needs, there are often fine circuit connection structures, sealing structures and unique appearance designs inside. The mold needs to accurately replicate these complex geometric shapes, including opening various small holes, grooves, bosses and fine internal channels in a limited space, which places extremely high requirements on the mold parting design, core and cavity manufacturing accuracy.

[0003] At present, the stamping mold for the charging head has insufficient control over the heating inside the mold. During the hot pressing process of the mold on the injection molding material, the uneven heat distribution inside the mold causes the molten injection molding material to have different flow forces. The injection molding material is prone to solidify prematurely at the edge of the mold or in some places where the temperature is not high, thus blocking the flow of the injection molding material, affecting the overall molding of the product and resulting in a low molding rate. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] In order to achieve the above-mentioned purpose, the present invention proposes a new energy vehicle charging head stamping and forming device, comprising an upper mold mechanism and a lower mold mechanism, wherein the upper mold mechanism and the lower mold mechanism are connected to each other by setting a hydraulic rod, and the upper mold mechanism comprises an upper mold plate and an upper mold core, wherein the upper mold core is arranged at the bottom of the upper mold plate, and the lower mold mechanism comprises a lower mold plate, a heating assembly and a plurality of independently spliced ​​lower mold core assemblies, wherein the lower mold plate is arranged below the upper mold plate, the lower mold core is arranged on the upper surface of the lower mold plate, the heating assembly is arranged inside the lower mold core, and the heating assembly is used to heat the lower mold core.

[0006] Furthermore, the lower mold core assembly includes a lower mold core and a heating block, wherein the heating block is arranged on the upper surface of the lower mold plate, the lower mold core is detachably arranged on the outside of the heating block, heating cotton is arranged inside the heating block, and conductive copper alloy fibers or graphene fibers are arranged inside the heating cotton.

[0007] Furthermore, the heating assembly includes heating plates arranged on both sides of the heating cotton, and the heating plates are in electrical contact with the heating cotton.

[0008] Furthermore, each of the heating plates is provided with a heating lead, a heating main line is provided inside the lower template, and the heating main line is electrically connected to the heating lead.

[0009] Furthermore, a heat-conducting rubber tube is arranged inside the heating cotton, and a memory mesh tube is arranged outside the heat-conducting rubber tube, and the memory mesh tube is made of a memory alloy.

[0010] Furthermore, a heat circulation mechanism is provided on the lower mold plate, and the heat circulation mechanism is used for uniformly conducting heat to multiple lower mold core components. The heat circulation mechanism includes a circulation pump, an oil inlet pipe and a return pipe, wherein the oil inlet pipe and the return pipe are both arranged inside the lower mold plate, the oil inlet pipe is connected to the oil inlet end of the thermal conductive rubber hose by arranging an oil inlet branch pipe, and the return pipe is connected to the oil outlet end of the thermal conductive rubber hose by arranging a return branch pipe.

[0011] Furthermore, a flow monitoring valve and a temperature sensor are provided on the oil inlet branch pipe.

[0012] Furthermore, an insulation box is provided at the bottom of the lower template, a transmission oil pipe is provided inside the insulation box, a shunt pump is provided outside the insulation box, the shunt pump is connected to the transmission oil pipe, and the circulating pump is connected to the shunt pump.

[0013] Furthermore, a heat sink is provided at the bottom of the lower template, and the heat sink is a fin-type oil-cooled radiator. A heat sink solenoid valve is provided on the heat sink, and the heat sink solenoid valve is connected to a shunt pump.

[0014] Furthermore, a fixing seat is provided at the bottom of the inner wall of the heat preservation box, the bottom end of the transmission oil pipe is provided on the fixing seat, a breathing hole is provided at the top of the heat preservation box, and an oil drain port is provided at the bottom of the heat preservation box.

[0015] Beneficial effects: The present invention arranges an array of lower mold core components on the lower mold, and each lower mold core component controls the temperature individually, so that the temperature distribution in the mold is more balanced, and the injection plastic remains in a molten state during the flow in the lower mold core, thereby preventing the injection plastic from solidifying prematurely and reducing the occurrence of injection plastic blockage, allowing the injection plastic to flow more freely and improving the hot pressing molding rate of the charging head; the upper mold core adopts an integral structure to make the outer surface of the charging head smoother and neater.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 It is a schematic diagram of the overall structure of a punching and forming device for a new energy vehicle charging head according to an embodiment of the present invention; Figure 2 A schematic diagram of a partial structure of a punching and forming device for a new energy vehicle charging head according to an embodiment of the present invention; Figure 3 It is a partial front cross-sectional view of a punching and forming device for a new energy vehicle charging head according to one embodiment of the present invention; Figure 4 for Figure 3 A magnified view of middle; Figure 5 for Figure 3 Enlarged view of B.

[0018] As shown in the figure: 1. Upper mold mechanism; 11. Upper mold plate; 12. Upper mold core; 13. Injection port; 2. Lower mold mechanism; 21. Lower mold plate; 22. Lower mold core assembly; 221. Lower mold core; 222. Heating block; 223. Heating cotton; 224. Memory mesh tube; 225. Hose; 226. Disassembly screws; 23. Heating assembly; 231. Heating plate; 232. Heating lead wire; 233. Heating main wire; 24. Cavity; 241. Remove the cover plate; 3. Support base; 31. Hydraulic rod; 32. Telescopic rod; 33. Sleeve; 4. Thermal circulation mechanism; 41. Circulation pump; 411. Return pipe; 412. Oil inlet pipe; 413. Return branch pipe; 414. Oil inlet branch pipe; 415. Flow monitoring valve; 42. Diverter pump; 421. Fixed seat; 422. Transmission oil pipe; 43. Heat dissipation solenoid valve; 44. Heat dissipation box; 45. Insulation box; 46. Oil drain port; 47. Breathing hole. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following describes the stamping and forming device for a new energy vehicle charging head according to an embodiment of the present invention in conjunction with the accompanying drawings.

[0021] like Figure 2-Figure 4As shown, the stamping and forming device of the new energy vehicle charging head provided by the embodiment of the present invention includes an upper mold mechanism 1 and a lower mold mechanism 2. The upper mold mechanism 1 and the lower mold mechanism 2 are connected to each other by arranging a hydraulic rod 31. A supporting base 3 is arranged at the bottom of the hydraulic rod 31. The base part of the hydraulic rod 31 is connected to the lower template 21. The telescopic rod 32 of the hydraulic rod 31 passes through the lower template 21. The lower template 21 is penetrated by a sliding sleeve 33. The telescopic rod 32 of the hydraulic rod 31 passes through the sliding sleeve 33.

[0022] The upper mold mechanism 1 comprises an upper mold plate 11 and an upper mold core 12 , wherein the upper mold core 12 is arranged at the bottom of the upper mold plate 11 , and an injection port 13 is arranged on one side of the upper mold core 12 .

[0023] The lower mold mechanism 2 includes a lower mold plate 21, a heating assembly 23 and a plurality of independently spliced ​​lower mold core assemblies 22, wherein the lower mold plate 21 is arranged below the upper mold plate 11, the lower mold core 221 is arranged on the upper surface of the lower mold plate 21, and the heating assembly 23 is arranged inside the lower mold core 221, and the heating assembly 23 is used to heat the lower mold core 221.

[0024] Specifically, in the process of stamping and forming the new energy vehicle charging head, the upper mold 11 and the lower mold 21 are first interlocked through the hydraulic rod 31, and then each lower mold core component 22 is heated by the heating component 23. After the lower mold core component 22 is heated, each corresponding part of the upper mold core 12 is heated equally. When the temperature reaches the hot pressing temperature, the molten injection plastic is injected through the injection port 13 on one side of the upper mold core 12.

[0025] After the injection plastic enters the lower mold core assembly 22, it flows on the upper surface of the lower mold core assembly 22. Since each lower mold core assembly 22 on the lower mold plate 21 is individually heated and controlled, the temperature of the lower mold core assembly 22 remains balanced, and the injection molded part will not partially lose temperature and solidify during the flow on the upper surface of the lower mold core assembly 22. When the injection plastic fills the product molding gap between the upper mold core 12 and the lower mold core assembly 22, the heating assembly 23 inside the lower mold core assembly 22 is cooled centrally. After the lower mold core assembly 22 is cooled, the injection plastic is gradually cooled and formed. Finally, the upper mold plate 11 is pushed upward and opened by the hydraulic rod 31, and the molded injection molded product on the lower mold plate 21 can be taken out.

[0026] In one embodiment of the present invention, Figure 3 and Figure 5As shown, the lower mold core assembly 22 includes a lower mold core 221 and a heating block 222, wherein the heating block 222 is arranged on the upper surface of the lower mold plate 21, the lower mold core 221 is detachably arranged outside the heating block 222, a heating cotton 223 is arranged inside the heating block 222, and a conductive copper alloy fiber or graphene fiber is arranged inside the heating cotton 223, so that the heating cotton 223 has the characteristics of electric heating and has a good thermal conductivity. The heating assembly 23 includes heating plates 231 arranged on both sides of the heating cotton 223, and the heating plates 231 are in electrical contact with the heating cotton 223.

[0027] Specifically, during the heating process of the lower mold core 221 , the heating plate 231 is energized to heat the heating cotton 223 between the two heating plates 231 , and the heating cotton 223 transfers heat to the heating block 222 , thereby increasing the temperature of the heating block 222 and further increasing the temperature of the lower mold core 221 .

[0028] In one embodiment of the present invention, Figure 5 As shown, the detachable lower mold core 221 is set on the lower mold plate 21 by disassembly screws 226, and the heating block 222 is also set on the lower mold plate 21 by disassembly screws 226, which is convenient for replacement and maintenance of the lower mold core 221 and the heating block 222. A mold cavity 24 is set inside the lower mold plate 21 for routing the pipeline of the thermal circulation mechanism 4. A disassembly cover 241 is set at the bottom of the lower mold plate 21 to facilitate maintenance of the interior of the lower mold plate 21.

[0029] In one embodiment of the present invention, Figure 3 and Figure 5 As shown, each heating plate 231 is provided with a heating lead 232 , and a heating main line 233 is provided inside the lower template 21 , and the heating main line 233 is electrically connected to the heating lead 232 .

[0030] Specifically, the heating main line 233 energizes each heating component 23 individually through the heating lead 232, so that each heating component 23 can be more accurately controlled to heat.

[0031] In one embodiment of the present invention, Figure 3-Figure 5 As shown, a heat-conducting rubber tube 225 is provided inside the heating cotton 223 , and a memory mesh tube 224 is provided outside the heat-conducting rubber tube 225 . The memory mesh tube 224 is made of a memory alloy.

[0032] A heat circulation mechanism 4 is provided on the lower mold plate 21, and the heat circulation mechanism 4 is used for uniformly conducting heat to multiple lower mold core assemblies 22; the heat circulation mechanism 4 includes a circulation pump 41, an oil inlet pipe 412 and a return pipe 411, wherein the oil inlet pipe 412 and the return pipe 411 are both arranged inside the lower mold plate 21, the oil inlet pipe 412 is connected to the oil inlet end of the thermal conductive rubber hose 225 by setting an oil inlet branch pipe 414, and the return pipe 411 is connected to the oil outlet end of the thermal conductive rubber hose 225 by setting a return branch pipe 413.

[0033] Specifically, the circulating pump 41 transmits the high-pressure heat transfer oil to the oil inlet pipe 412, and the heat transfer oil enters the corresponding heat transfer rubber hose 225 through each parallel oil inlet branch pipe 414, so that the pressure and flow rate of the heat transfer oil in each lower mold core assembly 22 are equal; after passing through the heat transfer rubber hose 225, the heat transfer oil enters the reflux branch pipe 413, and enters the reflux pipe 411 through the reflux branch pipe 413, and the heat transfer oil is recovered by the circulating pump 41.

[0034] During the above process, the heat transfer oil flows through each lower mold core assembly 22. The heat in the lower mold core assembly 22 with a higher temperature is transferred to the heat transfer oil and cooled down. The lower mold core assembly 22 with a lower temperature absorbs the heat in the heat transfer oil and heats up. The temperature of the heating cotton 223 can be evenly transferred, so that the temperature between multiple lower mold cores 221 is balanced and stable.

[0035] In addition, when the temperature in a lower mold core component 22 is high, the memory mesh tube 224 made of memory alloy outside the heat-conducting rubber hose 225 expands and thickens, making the heat-conducting oil flow faster, so that the temperature of the higher temperature lower mold core component 22 quickly drops to the average value.

[0036] In one embodiment of the present invention, Figure 4 As shown, the oil inlet branch pipe 414 is provided with a flow monitoring valve 415 and a temperature sensor.

[0037] Specifically, the flow monitoring valve 415 is used to monitor the return speed of the heat transfer oil in each lower mold core assembly 22. When the flow rate of the flow monitoring valve 415 in a lower mold core assembly 22 is lower than the normal threshold, it reminds the lower mold core assembly 22 that the oil circuit is blocked. When the flow rate of the flow monitoring valve 415 is higher than the normal threshold, it reminds the lower mold core assembly 22 that the oil circuit is damaged, and reminds the staff to perform maintenance in time.

[0038] In addition, the temperature sensor detects that the return oil temperature in the lower mold core assembly 22 is too high or too low, indicating that the heating assembly 23 in the lower mold core assembly 22 is damaged, reminding the staff to perform maintenance in time.

[0039] In one embodiment of the present invention, Figure 4As shown, an insulation box 45 is provided at the bottom of the lower template 21, a transmission oil pipe 422 is provided inside the insulation box 45, a shunt pump 42 is provided outside the insulation box 45, the shunt pump 42 is connected to the transmission oil pipe 422, and the circulation pump 41 is connected to the shunt pump 42.

[0040] Specifically, during each demolding process, the hot heat transfer oil in the oil inlet pipe 412 and the return pipe 411 is transmitted to the diverter pump 42 through the circulating pump 41. The diverter pump 42 transmits the hot heat transfer oil to the insulation box 45 through the transmission oil pipe 422. The diverter pump 42 also transmits the cold oil in the insulation box 45 to the circulating pump 41. The circulating pump 41 transmits the cold oil to the oil inlet pipe 412 and the return pipe 411, so that the lower template 21 assembly can be cooled faster.

[0041] During each heating process of the heating component 23, the shunt pump 42 transfers the heat transfer oil in the insulation box 45 to the circulation pump 41, and the circulation pump 41 then supplies the heat transfer oil with heat to the oil inlet pipe 412 for use, so that the heating component 23 heats up faster and saves heating electricity.

[0042] In one embodiment of the present invention, Figure 4 As shown, a heat sink 44 is provided at the bottom of the lower template 21 . The heat sink 44 is a fin-type oil-cooled radiator. A heat dissipation solenoid valve 43 is provided on the heat sink 44 . The heat dissipation solenoid valve 43 is connected to the shunt pump 42 .

[0043] Specifically, when the temperature of the heat transfer oil in the oil inlet pipe 412 and the return pipe 411 is too high, the heat transfer oil is transmitted to the heat dissipation solenoid valve 43 through the circulation pump 41, and then transmitted to the heat dissipation box 44 through the heat dissipation solenoid valve 43 for timely heat dissipation protection to prevent the temperature in the pipeline from being too high.

[0044] In one embodiment of the present invention, Figure 4 As shown, a fixing seat 421 is provided at the bottom of the inner wall of the insulation box 45, and the bottom end of the transmission oil pipe 422 is set on the fixing seat 421 to prevent the bottom of the transmission oil pipe 422 from shaking. A breathing hole 47 is provided at the top of the insulation box 45 to balance the air pressure inside and outside the insulation box 45, and an oil drain port 46 is provided at the bottom of the insulation box 45.

[0045] In order to clearly explain the above embodiments, refer to Figure 1-Figure 5 The specific working principle of the new energy vehicle charging head stamping forming device of the present invention is as follows: In the process of stamping and forming the new energy vehicle charging head, the upper template 11 and the lower template 21 are first buckled together by the hydraulic rod 31, and then the heating main line 233 is energized. The heating main line 233 energizes the heating plate 231 in each heating block 222 separately through the heating lead 232, and the heating plate 231 is energized to heat the heating cotton 223 between the two heating plates 231. The heating cotton 223 transfers heat to the heating block 222, so that the heating block 222 heats up, and then the temperature of the lower mold core 221 is increased. After the lower mold core assembly 22 is heated, each corresponding part of the upper mold core 12 is heated equally. When the temperature reaches the hot pressing temperature, the molten injection plastic is injected through the injection port 13 on one side of the upper mold core 12.

[0046] After the injection molding material enters the lower mold core assembly 22, the injection molding material flows on the upper surface of the lower mold core assembly 22. Since each lower mold core assembly 22 on the lower mold plate 21 is individually heated and controlled, the temperature of the lower mold core assembly 22 is kept balanced. During the heating process, the high-pressure heat transfer oil is transmitted to the oil inlet pipe 412 through the circulation pump 41. The heat transfer oil enters the corresponding heat transfer rubber hose 225 through each parallel oil inlet branch pipe 414. After passing through the heat transfer rubber hose 225, the heat transfer oil enters the return branch pipe 413 and is recovered by the circulation pump 41. In this process, the heat transfer oil flows through each lower mold core assembly 22. The heat in the lower mold core assembly 22 with a higher temperature is transferred to the heat transfer oil and cooled. The lower mold core assembly 22 with a lower temperature absorbs the heat in the heat transfer oil and heats up. The temperature of the heating cotton 223 can be uniformly heat-conducted, so that the temperature between multiple lower mold cores 221 is balanced and stable. Therefore, the injection molded part will not lose temperature and solidify locally during the flow on the upper surface of the lower mold core 221.

[0047] When the injection molding material fills the product molding gap between the upper mold core 12 and the lower mold core assembly 22, demolding preparation is carried out. First, the heating assembly 23 inside the lower mold core assembly 22 is cooled centrally. During each demolding process, the hot heat transfer oil in the oil inlet pipe 412 and the return pipe 411 is transmitted to the shunt pump 42 through the circulating pump 41. The shunt pump 42 transmits the hot heat transfer oil to the insulation box 45 through the transmission oil pipe 422 for storage. The shunt pump 42 also transmits the cold oil in the insulation box 45 to the circulating pump 41. The circulating pump 41 transmits the cold oil to the oil inlet pipe 412 and the return pipe 411, so that the lower mold plate 21 assembly is cooled faster. After the lower mold core assembly 22 is cooled, the injection molding material is gradually cooled and formed. The upper mold plate 11 is pushed upward and opened by the hydraulic rod 31 to take out the molded injection molded product on the lower mold plate 21.

[0048] During the heating stage of the next stamping and forming, while the heating component 23 is electrically heated, the heat transfer oil in the insulation box 45 is transmitted to the circulation pump 41 through the diversion pump 42. The circulation pump 41 then supplies the heat transfer oil with heat to the oil inlet pipe 412 for use, so that the heating component 23 heats up faster and saves heating electricity.

[0049] In summary, the stamping and forming device for the new energy vehicle charging head of the embodiment of the present invention arranges an array of lower mold core components on the lower mold, and each lower mold core component controls the temperature individually to make the temperature distribution in the mold more balanced. The injection plastic is always kept in a molten state during the flow in the lower mold core, which prevents the injection plastic from solidifying prematurely and reduces the occurrence of injection plastic blockage. The injection plastic can flow more freely and the hot pressing forming rate of the charging head is improved. The upper mold core adopts an integral structure to make the outer surface of the charging head smoother and neater.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A stamping and forming device for a new energy vehicle charging head, characterized in that: It comprises an upper mold mechanism (1) and a lower mold mechanism (2); The upper mold mechanism (1) comprises an upper mold core (12); The lower mold mechanism (2) comprises a heating component (23) and a plurality of independently spliced ​​lower mold core components (22); the heating component (23) comprises a plurality of heating modules corresponding to the number of the lower mold core components (22), and is configured to heat the corresponding lower mold core components (22) respectively; The upper mold core (12) cooperates with a plurality of lower mold core components (22) to define a molding space for the charging head.

2. The punching and forming device for a new energy vehicle charging head according to claim 1, characterized in that: The lower mold core assembly (22) comprises a lower mold core (221) and a heating block (222), wherein the heating block (222) is arranged on the upper surface of the lower mold plate (21), the lower mold core (221) is detachably arranged outside the heating block (222), a heating cotton (223) is arranged inside the heating block (222), and a conductive copper alloy fiber or graphene fiber is arranged inside the heating cotton (223).

3. The punching and forming device for the charging head of a new energy vehicle according to claim 2 is characterized in that: The heating component (23) comprises heating plates (231) arranged on both sides of the heating cotton (223), and the heating plates (231) are in electrical contact with the heating cotton (223).

4. The punching and forming device for a new energy vehicle charging head according to claim 3 is characterized in that: Each of the heating plates (231) is provided with a heating lead (232), and a heating main line (233) is provided inside the lower template (21), and the heating main line (233) is electrically connected to the heating lead (232).

5. The punching and forming device for a new energy vehicle charging head according to claim 2, characterized in that: A heat-conducting rubber tube (225) is arranged inside the heating cotton (223), and a memory mesh tube (224) is sleeved outside the heat-conducting rubber tube (225), wherein the memory mesh tube (224) is made of a memory alloy material.

6. The punching and forming device for the charging head of a new energy vehicle according to claim 5, characterized in that: The lower mold plate (21) is provided with a thermal circulation mechanism (4), and the thermal circulation mechanism (4) is used to evenly conduct heat to the plurality of lower mold core components (22); The thermal circulation mechanism (4) comprises a circulation pump (41), an oil inlet pipe (412) and a return pipe (411), wherein the oil inlet pipe (412) and the return pipe (411) are both arranged inside the lower template (21), the oil inlet pipe (412) is connected to the oil inlet end of the thermal conductive rubber hose (225) by arranging an oil inlet branch pipe (414), and the return pipe (411) is connected to the oil outlet end of the thermal conductive rubber hose (225) by arranging a return branch pipe (413).

7. The punching and forming device for a new energy vehicle charging head according to claim 6, characterized in that: The oil inlet branch pipe (414) is provided with a flow monitoring valve (415) and a temperature sensor.

8. The punching and forming device for a new energy vehicle charging head according to claim 6, characterized in that: An insulation box (45) is provided at the bottom of the lower template (21), a transmission oil pipe (422) is provided inside the insulation box (45), a shunt pump (42) is provided outside the insulation box (45), the shunt pump (42) is connected to the transmission oil pipe (422), and the circulation pump (41) is connected to the shunt pump (42).

9. The punching and forming device for a new energy vehicle charging head according to claim 8, characterized in that: A heat sink (44) is provided at the bottom of the lower template (21); the heat sink (44) is a fin-type oil-cooled radiator; a heat sink solenoid valve (43) is provided on the heat sink (44); the heat sink solenoid valve (43) is connected to a flow diversion pump (42).

10. The punching and forming device for a new energy vehicle charging head according to claim 8, characterized in that: A fixing seat (421) is provided at the bottom of the inner wall of the heat preservation box (45), the bottom end of the transmission oil pipe (422) is arranged on the fixing seat (421), a breathing hole (47) is provided at the top of the heat preservation box (45), and an oil drain port (46) is provided at the bottom of the heat preservation box (45).

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