Cooling device for automobile part forging and pressing die

Abstract

The invention belongs to the technical field of forging and pressing die cooling, and particularly relates to a cooling device for an automobile part forging and pressing die, the cooling device comprises a base, supporting frames, an air cooling type cooling mechanism and a turnover type impurity removing mechanism, the supporting frames are symmetrically arranged on the upper walls of the two ends of the base, and the air cooling type cooling mechanism is arranged on the supporting frames; the turnover type impurity removal mechanism is arranged on the air cooling type cooling mechanism, and the air cooling type cooling mechanism comprises an air guide mechanism, a windward mechanism and an air return mechanism. According to the cooling device for the automobile part forging and pressing die, the impact force of air cooling gas can be used for cooling the die and removing impurities on the surface of the die, and the situation that high-temperature impurities falling off from the surface of the die diffuse along with the gas, and consequently operators are scalded can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of forging die cooling, and in particular relates to a cooling device for a forging die of an automobile part. Background Art

[0002] During the forging process, the die is in constant contact with the hot metal billet, causing the die temperature to rise rapidly. If not cooled, the die temperature may exceed its tolerance limit, causing premature failure or damage to the die. There are various ways to cool the forging die for automotive parts, including natural cooling, blast cooling, brine cooling, etc.

[0003] The existing cooling devices for forging dies for automotive parts have the following problems: Most of the existing devices that use air cooling to cool the mold use the impact force of the air flow to directly contact the mold, so that the air flow takes away the heat of the mold, thereby cooling the mold. However, when the air flow contacts the mold, the high-temperature debris attached to the mold will spread with the flow of the air flow, which will cause burns to the operators. In addition, due to the uneven air flow, the air cooling method of the traditional wind cooling device causes uneven temperature distribution on the mold surface. The uneven temperature distribution will cause the mold to deform and crack, thereby affecting the forming accuracy and surface quality of the accessories. Therefore, it cannot meet the existing use requirements of cooling devices for forging dies of automotive accessories. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a cooling device for automotive parts forging dies that can not only utilize the impact force of air-cooled gas to cool the mold and remove impurities on its surface, but also prevent high-temperature impurities that fall off the mold surface from diffusing with the gas and causing burns to operators.

[0005] The technical scheme adopted in this scheme is as follows: This scheme proposes a cooling device for a forging die of an automobile part, comprising a base, a support frame, an air-cooled cooling mechanism and a flip-type de-impurity mechanism, wherein the support frame is symmetrically arranged on the upper walls at both ends of the base, the air-cooled cooling mechanism is arranged on the support frame, and the flip-type de-impurity mechanism is arranged on the air-cooled cooling mechanism, the air-cooled cooling mechanism comprises an air guiding mechanism, a windward mechanism and an air return mechanism, the air guiding mechanism is arranged at one end of the support frame away from the base, the windward mechanism is arranged on a side of the air guiding mechanism away from the support frame, the air return mechanism is arranged on the side wall of the windward mechanism, the flip-type de-impurity mechanism comprises a positioning mechanism and a driving mechanism, the support plate is arranged on the upper wall of the cooling cylinder, and the driving motor is arranged on the upper wall of the base below the cooling cylinder.

[0006] As a further optimization of the solution of this case, the air guiding mechanism includes an air guiding conical cylinder, an air extraction pump and an air cooling pipe. The air guiding conical cylinder is disposed through one end of the support frame away from the base, and the air guiding conical cylinder is provided with an opening at one end. The air extraction pump is disposed through one end of the support frame close to the base, and the air cooling pipe is connected between the exhaust end of the air extraction pump and the air guiding conical cylinder. The windward mechanism includes a cooling cylinder, a conduction port and a copper conical cylinder. The cooling cylinder is disposed between the air guiding conical cylinders. A plurality of groups of the conduction ports are disposed at one end of the cooling cylinder away from the air guiding conical cylinder. The copper conical cylinders are symmetrically disposed on both sides of the cooling cylinder, and the copper conical cylinders are disposed inside the air guiding conical cylinder and are connected to the cooling cylinder. The air return mechanism includes an air return box, an air return pipe, an exhaust valve, an exhaust pipe, a thermoelectric generation chip, a rectifier and a conduction copper plate. The air return box is connected between the air guiding conical cylinders. The air return pipe is connected between the bottom walls of the air return box. The exhaust valve is disposed through the inner wall of the support frame. The exhaust pipe is connected between the air return pipe and the exhaust valve. A plurality of groups of the thermoelectric generation chips are disposed through the inner wall of one end of the air return box away from the cooling cylinder. The rectifier is disposed on the upper wall of the air return box, and the thermoelectric generation chip is electrically connected to the rectifier.

[0007] During use, the air extraction pump transports the external air-cooling gas to the inside of the air guiding conical cylinder through the air extraction end via the air cooling pipe. The gas flows along the conical cavity formed between the air guiding conical cylinder and the copper conical cylinder. After flowing through the inside of the conical cavity, the gas enters the inside of the air return box. The flow route of the gas forms an angle with the plane where the thermoelectric generation chip is located. After flowing out of the conical cavity, the gas enters the air return box and impacts the thermoelectric generation chip. One side of the thermoelectric generation chip located inside the air return box is heated, causing a temperature difference between both ends of the thermoelectric generation chip. The current generated inside the thermoelectric generation chip due to the temperature difference enters the rectifier for rectification. By connecting an external storage battery to the rectifier, the current generated by the thermoelectric generation chip is transported to the inside of the storage battery for storage. The excess gas enters the exhaust pipe through the air return pipe, and the exhaust pipe discharges the gas through the exhaust valve.

[0008] Preferably, the positioning mechanism includes a support plate, a card slot, a fixing plate, a pressing plate, a limiting shaft, a rotating plate, a pressing spring, a fixing bolt and a limiting plate. The support plate is rotatably disposed on the inner wall of the bottom of the cooling cylinder. The card slot is disposed on the upper wall of the support plate, and the card slot is provided with an opening at the upper end. The fixing plates are symmetrically disposed on both sides of the top of the cooling cylinder. The pressing plate is attached to the upper wall of the fixing plate. The fixing bolts are symmetrically disposed on the inner walls of both ends of the pressing plate. The end of the fixing bolt away from the air return pipe penetrates through the inside of the fixing plate, and the fixing bolt is threadedly connected to the fixing plate. The limiting shaft penetrates through the inner wall of the middle part of the pressing plate. The rotating plate is rotatably disposed on the inner wall of the limiting shaft. The limiting plate is disposed on the upper wall of the limiting shaft. The pressing spring is disposed between the limiting plate on the outer side of the limiting shaft and the fixing plate. The driving mechanism includes a driving motor and a driving shaft. The driving motor is disposed on the upper wall of the base below the support plate, and the driving shaft is disposed between the power end of the driving motor and the support plate.

[0009] When in use, rotate the fixing bolt, the fixing bolt is unscrewed from the inside of the fixing plate, and the extrusion plate is removed from the upper wall of the fixing plate. The extrusion spring is in a compressed state in the initial state. The automobile parts forging die to be cooled is vertically placed into the slot, and then the extrusion plate is placed on the upper wall of the fixing plate. The rotating plate fits with the upper side wall of the automobile parts forging die, and the fixing bolt is rotated. The fixing bolt is screwed into the inside of the fixing plate. The extrusion spring utilizes deformation to make the limit shaft slide along the inner wall of the extrusion plate and extend out of the cooling cylinder. The rotating plate fits tightly with the upper side wall of the automobile parts forging die. The automobile parts forging die is fixed inside the cooling cylinder, and the driving motor drives the driving shaft to rotate through the power end. The driving shaft drives the automobile parts forging die to rotate inside the cooling cylinder through the support plate, so that the copper cone cylinder can evenly cool the automobile parts forging die.

[0010] Specifically, a controller is provided on the upper wall of the return air box on one side of the rectifier.

[0011] Wherein, the controller is electrically connected to the temperature difference power generation sheet, the rectifier and the drive motor respectively.

[0012] Preferably, the model of the thermoelectric generator is TEG1-287-1.4-1.5.

[0013] The beneficial effects achieved by adopting the above structure are as follows: Compared with the prior art, this solution adopts a non-contact air cooling structure combined with a rotating impurity removal mechanism. Through the air-cooling type cooling mechanism and the flip impurity removal mechanism, the forging die of automobile parts can be evenly cooled under the coordinated use of the air guide mechanism, the windward mechanism, the return air mechanism, the positioning mechanism and the driving mechanism, so as to avoid defects such as mold deformation and cracking. Under the guiding effect of the conical cavity formed by the air guide cone and the copper cone, on the one hand, the contact time between the air-cooling airflow and the copper cone can be extended, so that the airflow can take away more heat, and on the other hand, the airflow can be used to cool the forging die of automobile parts. On the one hand, under the guidance of the conical cavity, the gas with increased temperature can impact the inner wall of the return air box equipped with the temperature difference power generation sheet, thereby increasing the temperature difference at both ends of the temperature difference power generation sheet, which is convenient for recovering the energy of the hot gas. When the driving motor drives the forging die of automotive parts to rotate, the energy consumption of the driving motor is reduced. Therefore, under the condition that the air-cooled gas does not contact the die, the impact force of the air-cooled gas can be used to cool the die and remove impurities on its surface, and the high-temperature impurities that fall off the die surface can be prevented from diffusing with the gas, which may cause burns to the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this scheme; Figure 2 This is the main stereogram of the scheme; Figure 3Schematic diagram of the internal structure of this solution; Figure 4 Schematic diagram of the structure of the flipping type impurity removal mechanism of this solution; Figure 5 Schematic diagram of the structure of the windward mechanism of this solution; Figure 6 Schematic diagram of the combined structure of the base and the support frame of this solution; Figure 7 Front view of this solution; Figure 8 Side view of this solution; Figure 9 Top view of this solution; Figure 10 is Figure 9 Partial sectional view of A-A of Figure 11 is Figure 7 Partial sectional view of B-B of

[0015] Among them, 1. Base, 2. Support frame, 3. Air-cooled type cooling mechanism, 4. Air guiding mechanism, 5. Air guiding cone, 6. Air extraction pump, 7. Air cooling pipe, 8. Windward mechanism, 9. Cooling cylinder, 10. Conduction port, 11. Copper cone, 12. Return air mechanism, 13. Return air box, 14. Return air pipe, 15. Exhaust valve, 16. Exhaust pipe, 17. Thermoelectric generator, 18. Rectifier, 19. Flipping type impurity removal mechanism, 20. Positioning mechanism, 21. Support plate, 22. Card slot, 23. Fixed plate, 24. Extrusion plate, 25. Limit shaft, 26. Rotating plate, 27. Extrusion spring, 28. Driving mechanism, 29. Driving motor, 30. Driving shaft, 31. Controller, 32. Conduction copper plate, 33. Fixed bolt, 34. Limit plate.

[0016] The attached drawings are used to provide a further understanding of this solution, and constitute a part of the specification. Together with the embodiments of this solution, they are used to explain this solution and do not constitute a limitation to this solution. Specific implementation manners

[0017] Next, the technical solutions in the embodiments of this solution will be clearly and completely described in conjunction with the attached drawings in the embodiments of this solution. Obviously, the described embodiments are only a part of the embodiments of this solution, rather than all the embodiments; based on the embodiments in this solution, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this solution.

[0018] In the description of this solution, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this solution and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this solution.

[0019] As Figures 1-11 shown, a cooling device for an automotive parts forging die proposed in this solution includes a base 1, a support frame 2, an air-cooled temperature reduction mechanism 3, and a flip-type impurity removal mechanism 19. The support frame 2 is symmetrically arranged on the upper walls at both ends of the base 1. The air-cooled temperature reduction mechanism 3 is arranged on the support frame 2. The flip-type impurity removal mechanism 19 is arranged on the air-cooled temperature reduction mechanism 3. The air-cooled temperature reduction mechanism 3 includes a wind guiding mechanism 4, a wind-facing mechanism 8, and a return air mechanism 12. The wind guiding mechanism 4 is arranged at one end of the support frame 2 away from the base 1. The wind-facing mechanism 8 is arranged on the side of the wind guiding mechanism 4 away from the support frame 2. The return air mechanism 12 is arranged on the side wall of the wind-facing mechanism 8. The flip-type impurity removal mechanism 19 includes a positioning mechanism 20 and a driving mechanism 28. The support plate 21 is arranged on the upper wall of the wind-facing mechanism 8. The driving mechanism 28 is arranged on the upper wall of the base 1 below the wind-facing mechanism 8.

[0020] The wind guiding mechanism 4 includes a wind guiding cone 5, an air extraction pump 6, and an air-cooled pipe 7. The wind guiding cone 5 is arranged through one end of the support frame 2 away from the base 1. The wind guiding cone 5 is provided with an opening at one end. The air extraction pump 6 is arranged through one end of the support frame 2 close to the base 1. The air-cooled pipe 7 is connected between the exhaust end of the air extraction pump 6 and the wind guiding cone 5. The wind-facing mechanism 8 includes a cooling cylinder 9, a conduction port 10, and a copper cone 11. The cooling cylinder 9 is arranged between the wind guiding cones 5. A plurality of groups of the conduction ports 10 are arranged at one end of the cooling cylinder 9 away from the wind guiding cone 5. The copper cones 11 are symmetrically arranged on both sides of the cooling cylinder 9. The copper cones 11 are arranged inside the wind guiding cone 5 and are connected and arranged with the cooling cylinder 9. The return air mechanism 12 includes a return air box 13, a return air pipe 14, an exhaust valve 15, an exhaust pipe 16, a thermoelectric generation sheet 17, a rectifier 18, and a conduction copper plate 32. The return air box 13 is connected between the wind guiding cones 5. The return air pipe 14 is connected and arranged between the bottom walls of the return air box 13. The exhaust valve 15 is arranged through the inner wall of the support frame 2. The exhaust pipe 16 is connected between the return air pipe 14 and the exhaust valve 15. A plurality of groups of the thermoelectric generation sheets 17 are arranged through the inner wall of one end of the return air box 13 away from the cooling cylinder 9. The rectifier 18 is arranged on the upper wall of the return air box 13. The thermoelectric generation sheet 17 is electrically connected to the rectifier 18.

[0021] The positioning mechanism 20 includes a support plate 21, a card slot 22, a fixing plate 23, a pressing plate 24, a limiting shaft 25, a rotating plate 26, a pressing spring 27, a fixing bolt 33 and a limiting plate 34. The support plate 21 is rotatably arranged on the inner wall of the bottom of the cooling cylinder 9. The card slot 22 is arranged on the upper wall of the support plate 21, and the card slot 22 is open at the upper end. The fixing plates 23 are symmetrically arranged on both sides of the top of the cooling cylinder 9. The pressing plate 24 is attached to the upper wall of the fixing plate 23. The fixing bolts 33 are symmetrically arranged on the inner walls of both ends of the pressing plate 24. One end of the fixing bolt 33 away from the return air duct 14 penetrates through the inside of the fixing plate 23, and the fixing bolt 33 is threadedly connected to the fixing plate 23. The limiting shaft 25 penetrates through the inner wall of the middle part of the pressing plate 24. The rotating plate 26 is rotatably arranged on the inner wall of the limiting shaft 25. The limiting plate 34 is arranged on the upper wall of the limiting shaft 25. The pressing spring 27 is arranged between the limiting plate 34 on the outer side of the limiting shaft 25 and the fixing plate 23. The driving mechanism 28 includes a driving motor 29 and a driving shaft 30. The driving motor 29 is arranged on the upper wall of the base 1 below the support plate 21. The driving shaft 30 is arranged between the power end of the driving motor 29 and the support plate 21.

[0022] A controller 31 is arranged on the upper wall of the return air box 13 on one side of the rectifier 18.

[0023] The controller 31 is electrically connected to the thermoelectric generator 17, the rectifier 18 and the driving motor 29 respectively.

[0024] The model of the thermoelectric generator 17 is TEG1-287-1.4-1.5.

[0025] During specific use, in the initial state, the pressing spring 27 is in a compressed state. The pressing spring 27 drives the rotating plate 26 to extend into the cooling cylinder 9 by deformation for placement. The pressing plate 24 is attached to the upper wall of the fixing plate 23. The fixing bolt 33 is screwed into the inside of the fixing plate 23. The exhaust valve 15 is communicated with the pipeline for discharging to the outside of the workshop. The air suction end of the air suction pump 6 is communicated with the gas pipeline for entering the workshop. The pipeline for discharging to the outside of the workshop is on the side of the workshop away from the gas pipeline for entering the workshop. When it is necessary to cool the forging die of automotive parts, manually rotate the fixing bolt 33. The fixing bolt 33 is screwed out from the inside of the fixing plate 23. Remove the pressing plate 24 from the upper wall of the fixing plate 23. Vertically place the forging die of automotive parts to be cooled into the card slot 22. Then place the pressing plate 24 on the upper wall of the fixing plate 23. The rotating plate 26 is attached to the upper side wall of the forging die of automotive parts. Rotate the fixing bolt 33. The fixing bolt 33 is screwed into the inside of the fixing plate 23. The pressing spring 27 makes the limiting shaft 25 slide out of the inside of the cooling cylinder 9 along the inner wall of the pressing plate 24 by deformation. The rotating plate 26 is closely attached to the upper side wall of the forging die of automotive parts. The forging die of automotive parts is fixed inside the cooling cylinder 9. The controller 31 controls the driving motor 29 to start. The driving motor 29 drives the driving shaft 30 to rotate through the power end. The driving shaft 30 drives the automotive parts forging die to rotate inside the cooling cylinder 9 through the support plate 21, facilitating the uniform cooling of the automotive parts forging die by the copper cone 11. The controller 31 controls the air extraction pump 6 to start. The air extraction pump 6 conveys the external air-cooling gas to the inside of the air guide cone 5 through the air extraction end via the air-cooling pipe 7. The gas flows along the conical cavity formed between the air guide cone 5 and the copper cone 11. After flowing through the inside of the conical cavity, the gas enters the return air box 13. The flow route of the gas forms an angle with the plane where the thermoelectric generator 17 is located. The gas impacts the thermoelectric generator 17 after flowing out of the conical cavity and entering the return air box 13. One side of the thermoelectric generator 17 located inside the return air box 13 is heated, causing a temperature difference between both ends of the thermoelectric generator 17. The current generated inside the thermoelectric generator 17 due to the temperature difference enters the rectifier 18 for rectification. The external storage battery is connected to the rectifier 18, and the current generated by the thermoelectric generator 17 is transmitted to the inside of the storage battery for storage. The storage battery provides energy for the operation of the driving motor 29, reducing the energy consumption of the driving motor 29. The excess gas enters the exhaust pipe 16 through the return air pipe 14, and the exhaust pipe 16 discharges the gas through the exhaust valve 15. As the temperature of the automotive parts forging die gradually decreases, the oxides or cinder on the surface of the automotive parts forging die will loosen or fall off due to thermal expansion and contraction. During the process of the driving motor 29 driving the automotive parts forging die to rotate through the driving shaft 30, the impurities attached to the surface of the automotive parts forging die fall off under the action of centrifugal force. The fallen impurities fall into the cooling cylinder 9, preventing the high-temperature debris on the surface of the automotive parts forging die from floating with the airflow and scalding the operators, and improving the efficiency of cooling the automotive parts forging die by wind power. Just repeat the above operations when using it next time.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] The above description has been made on this solution and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of this solution, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of this solution, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of this solution.

Claims

1. A cooling device for a forging die of an automobile part, comprising a base (1) and a support frame (2), characterized in that: The invention also comprises an air-cooling type cooling mechanism (3) and a flip-type impurity removing mechanism (19); the support frame (2) is symmetrically arranged on the upper walls at both ends of the base (1); the air-cooling type cooling mechanism (3) is arranged on the support frame (2); the flip-type impurity removing mechanism (19) is arranged on the air-cooling type cooling mechanism (3); the air-cooling type cooling mechanism (3) comprises an air guiding mechanism (4), a windward mechanism (8) and an air return mechanism (12); the air guiding mechanism (4) is arranged on one end of the support frame (2) away from the base (1); the windward mechanism (8) is arranged on a side of the air guiding mechanism (4) away from the support frame (2); the air return mechanism (12) is arranged on a side wall of the windward mechanism (8); the flip-type impurity removing mechanism (19) comprises a positioning mechanism (20) and a driving mechanism (28); the positioning mechanism (20) is arranged on the upper wall of the windward mechanism (8); and the driving mechanism (28) is arranged on the upper wall of the base (1) below the windward mechanism (8).

2. The cooling device for a forging die of an automobile part according to claim 1, characterized in that: The air guide mechanism (4) comprises an air guide cone (5), an air extraction pump (6) and an air cooling pipe (7); the air guide cone (5) is arranged through an end of the support frame (2) away from the base (1); one end of the air guide cone (5) is open; the air extraction pump (6) is arranged through an end of the support frame (2) close to the base (1); and the air cooling pipe (7) is arranged between the exhaust end of the air extraction pump (6) and the air guide cone (5).

3. The cooling device for a forging die of an automobile part according to claim 2, characterized in that: The windward mechanism (8) comprises a cooling cylinder (9), a conduction port (10) and a copper cone cylinder (11); the cooling cylinder (9) is arranged between the wind guide cone cylinders (5); a plurality of groups of the conduction ports (10) are arranged at one end of the cooling cylinder (9) away from the wind guide cone cylinder (5); the copper cone cylinder (11) is symmetrically arranged on both sides of the cooling cylinder (9); the copper cone cylinder (11) is arranged inside the wind guide cone cylinder (5); and the copper cone cylinder (11) is connected to the cooling cylinder (9).

4. A cooling device for a forging die of an automobile part according to claim 3, characterized in that: The return air mechanism (12) comprises a return air box (13), a return air duct (14), an exhaust valve (15), an exhaust duct (16), a temperature difference power generation sheet (17), a rectifier (18) and a conductive copper plate (32); the return air box (13) is connected between the air guide cone cylinder (5); the return air duct (14) is connected between the bottom wall of the return air box (13); the exhaust valve (15) is arranged through the inner wall of the support frame (2); the exhaust duct (16) is connected between the return air duct (14) and the exhaust valve (15); a plurality of groups of temperature difference power generation sheets (17) are arranged through the inner wall of the return air box (13) at one end away from the cooling cylinder (9); the rectifier (18) is arranged on the upper wall of the return air box (13); and the temperature difference power generation sheet (17) is electrically connected to the rectifier (18).

5. The cooling device for a forging die of an automobile part according to claim 4, characterized in that: The positioning mechanism (20) comprises a support plate (21), a slot (22), a fixed plate (23), an extrusion plate (24), a limiting shaft (25), a rotating plate (26), an extrusion spring (27), a fixing bolt (33) and a limiting plate (34); the support plate (21) is rotatably arranged on the bottom inner wall of the cooling cylinder (9); the slot (22) is arranged on the upper wall of the support plate (21); the slot (22) is opened at the upper end; the fixed plate (23) is symmetrically arranged on both sides of the top of the cooling cylinder (9); the extrusion plate (24) is fitted on the upper wall of the fixed plate (23); The fixing bolts (33) are symmetrically arranged on the inner walls at both ends of the extrusion plate (24); one end of the fixing bolt (33) away from the return air duct (14) is arranged to penetrate inside the fixing plate (23); the fixing bolt (33) is threadedly connected to the fixing plate (23); the limiting shaft (25) is arranged to penetrate the inner wall of the middle part of the extrusion plate (24); the rotating plate (26) is rotatably arranged on the inner wall of the limiting shaft (25); the limiting plate (34) is arranged on the upper wall of the limiting shaft (25); and the extrusion spring (27) is arranged between the limiting plate (34) outside the limiting shaft (25) and the fixing plate (23).

6. The cooling device for a forging die of an automobile part according to claim 5, characterized in that: The driving mechanism (28) comprises a driving motor (29) and a driving shaft (30); the driving motor (29) is arranged on an upper wall of the base (1) below the supporting plate (21); and the driving shaft (30) is arranged between a power end of the driving motor (29) and the supporting plate (21).

7. The cooling device for a forging die of an automobile part according to claim 6, characterized in that: A controller (31) is provided on the upper wall of the return air box (13) on one side of the rectifier (18).

8. The cooling device for a forging die of an automobile part according to claim 7, characterized in that: The controller (31) is electrically connected to the temperature difference power generation sheet (17), the rectifier (18) and the drive motor (29) respectively.

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