Cooling device of stamping die and cooling method of stamping die

Abstract

The invention relates to the technical field of die cooling, in particular to a cooling device and method for a stamping die, and the cooling device comprises a water storage tank, a supporting table, a lower die holder, a heat gathering structure and two circulating cooling mechanisms; the circulating cooling mechanism comprises a first water pipe, a water pumping device, a second water pipe, a control valve, a third water pipe and a first water tank, the two ends of the first water pipe communicate with one water inlet and outlet of the water storage pond and one water inlet and outlet of the water pumping device correspondingly, and the two ends of the second water pipe communicate with the other water inlet and outlet of the water pumping device and one port of the control valve correspondingly. Two ends of the third water pipe are respectively communicated with the other port of the control valve and the first water tank. The first water tanks of the two circulating cooling mechanisms are used for loading the overheated cooling liquid pumped out of the water storage pond in turn, supplying the cooling liquid into the water storage pond in turn and cooling after being unloaded in turn, replacement and cooling of the cooling liquid are facilitated, the heat gathering structure concentrates heat to the cooling liquid in the water storage pond to transfer heat, and the cooling efficiency is improved. And the cooling efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of mold cooling, in particular to a cooling device for a stamping mold and a cooling method for the stamping mold. Background Art

[0002] Stamping dies are special process equipment used to process materials into parts (or semi-finished products) during cold stamping. Since stamping dies are produced at high speed, they will generate high heat after high-speed friction, so they need to be cooled.

[0003] Among the existing patents, the Chinese patent document with application number 202321899082.9 discloses a stamping die cooling device for automobile stamping parts, which belongs to a stamping die cooling device for automobile stamping parts, including a die seat and a cooling circulation mechanism, a cooling cavity is arranged inside the die seat, and a first heat dissipation fin group is arranged on the side of the die seat; the cooling circulation mechanism includes a water cooling box, a second heat dissipation fin group is installed on the outer wall of the water cooling box, an inlet pipe and a return pipe are installed on one side of the water cooling box, a pressure pump is installed on the inlet pipe, and a round pipe is connected to the end of the inlet pipe, and the round pipe is located inside the first heat dissipation fin group. The device can cool the cooling cavity of the die seat by water cooling circulation through the cooling circulation mechanism, so as to ensure that the temperature of the die seat will not be too high. Since the cooling water is always in circulation, the temperature of the cooling water will gradually increase with the use time, resulting in a decrease in the cooling effect of the cooling water on the stamping die, and even failing to achieve the purpose of cooling the stamping die.

[0004] Therefore, the defects are very obvious and a solution is urgently needed. Summary of the invention

[0005] In order to solve the above technical problems, the object of the present invention is to provide a cooling device for a stamping die and a cooling method for a stamping die.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A cooling device for a stamping die comprises a water tank, a support platform arranged in the water tank, a lower die seat covering the top port of the water tank, a heat collecting structure arranged at the bottom of the support platform and extending into the cooling liquid in the water tank, and two circulating cooling mechanisms respectively arranged at both ends of the water tank; the table top of the support platform is in contact with the bottom surface of the lower die seat; the circulating cooling mechanism comprises a first water pipe, a water pump, a second water pipe, a control valve, a third water pipe and a first water tank, the two ends of the first water pipe are respectively connected to a water inlet and outlet of the water tank and a water inlet and outlet of the water pump, the two ends of the second water pipe are respectively connected to the other water inlet and outlet of the water pump and one end of the control valve, and the two ends of the third water pipe are respectively connected to the other end of the control valve and the first water tank.

[0008] Furthermore, the circulating cooling mechanism also includes a fourth water pipe and a second water tank, the control valve is a switching valve, and both ends of the fourth water pipe are connected to the third port of the control valve and the second water tank respectively.

[0009] Furthermore, a temperature probe is provided in the water tank, and the temperature probe is used to detect the temperature of the coolant in the water tank.

[0010] Further, the temperature probe is electrically connected to the controller, and the water pump is electrically connected to the controller.

[0011] Furthermore, the water pump includes a water pumping box, a water pumping wheel rotatably arranged in the water pumping box, and a rotating driver installed outside the water pumping box and used to drive the water pumping wheel to rotate. The two side ports of the water pumping box are respectively connected to the first water pipe and the second water pipe.

[0012] Furthermore, a cavity is concavely provided on the bottom surface of the lower die seat, and the table plate of the support table extends into the cavity.

[0013] Furthermore, the heat collection structure includes a plurality of conical blocks arranged at the bottom of the support platform, the plurality of conical blocks are arranged in a rectangular array, and the tips of the conical blocks face the water tank and extend into the coolant in the water tank.

[0014] Furthermore, a positioning hole is provided on the foot of the support platform, and a positioning column is protruded from the bottom wall of the water storage tank, and the positioning column is inserted into the positioning hole.

[0015] Furthermore, a plurality of heat sinks are disposed on the outer surface of the first water tank and the outer surface of the second water tank.

[0016] Furthermore, anti-skid feet are installed at the bottom of the water tank.

[0017] The present invention also provides a stamping die cooling method, based on the application of the stamping die cooling device, comprising the following method steps:

[0018] A. Coolant is stored in the water tank, the support table supports the stamping die, the heat collecting structure on the support table extends into the coolant, and the coolant cools the lower die seat and the stamping die on the support table;

[0019] B. When the coolant in the water tank is too high, a pump of a circulating cooling mechanism pumps the coolant in the water tank into the first water tank of the circulating cooling mechanism;

[0020] C. A water pump of another circulating cooling mechanism pumps the coolant in the first water tank of the circulating cooling mechanism into a water storage tank;

[0021] D. The two circulating cooling mechanisms work in a cycle according to the above steps, and replace the coolant in the water storage tank alternately.

[0022] The beneficial effects of the present invention are as follows: in practical application, at the beginning, coolant is stored in the water tank, and the two circulating cooling mechanisms are respectively called the first circulating cooling mechanism and the second circulating cooling mechanism, the first water tank of the first circulating cooling mechanism stores coolant, and the first water tank of the second circulating cooling mechanism is unloaded; the heat generated by the stamping die during operation is transferred to the support table via the lower die seat, and the heat of the support table is transferred to the coolant in the water tank via the heat collecting structure, and the coolant can cool the heat collecting structure, the support table, the lower die seat and the stamping die. When the coolant in the water tank is overheated, the control valve and the water pump of the second circulating cooling mechanism are started, and the water pump draws the coolant in the water tank into the first water tank of the second circulating cooling mechanism, and the control valve and the water pump of the first circulating cooling mechanism are started. The device pumps the coolant in the first water tank of the first circulating cooling mechanism into the water tank to replace the coolant in the water tank, thereby ensuring the cooling effect, and the coolant stored in the first water tank of the second circulating cooling mechanism can be naturally cooled and cooled. The first water tank of the first circulating cooling mechanism is cooled under no-load condition, so that the temperature of the first water tank itself drops to room temperature, which is beneficial to cooling the coolant drawn out of the water tank and improving the efficiency of cooling the coolant; when the coolant in the water tank is overheated again, the control valve and the water pump of the first circulating cooling mechanism are started, and the water pump pumps the coolant in the water tank into the first water tank of the first circulating cooling mechanism, the control valve and the water pump of the second circulating cooling mechanism are started, and the water pump of the second circulating cooling mechanism pumps the coolant in its first water tank into the water tank. The present invention uses the first water tanks of the two circulating cooling mechanisms to alternately load the superheated coolant drawn from the water tank, alternately supply the coolant into the water tank, and alternately cool down after being unloaded, which is beneficial to the replacement and cooling of the coolant. The heat-collecting structure concentrates the heat and transfers it to the coolant in the water tank, greatly improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the cooling device of the stamping die of the present invention.

[0024] Figure 2 It is a schematic diagram of the exploded structure of the cooling device of the stamping die of the present invention.

[0025] Figure 3 It is a cross-sectional view of the water storage tank, support platform, lower mold base and heat collection structure of the present invention.

[0026] Description of reference numerals:

[0027] 1. Water storage tank; 2. Support platform; 3. Lower mold base; 4. Heat collection structure; 5. Circulating cooling mechanism; 6. First water pipe; 7. Water pump; 8. Second water pipe; 9. Control valve; 10. Third water pipe; 11. First water tank; 12. Fourth water pipe; 13. Second water tank; 14. Controller; 15. Water pumping box; 16. Water pumping wheel; 17. Rotating drive; 18. Cavity; 19. Conical block; 20. Heat sink; 21. Anti-slip feet. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0029] like Figures 1 to 3 As shown, the present invention provides a cooling device for a stamping die, which includes a water tank 1, a support platform 2 arranged in the water tank 1, a lower die seat 3 covering the top port of the water tank 1, a heat collecting structure 4 arranged at the bottom of the support platform 2 and extending into the coolant of the water tank 1, and two circulating cooling mechanisms 5 respectively arranged at both ends of the water tank 1; the table surface of the support platform 2 is in contact with the bottom surface of the lower die seat 3; the circulating cooling mechanism 5 includes a first water pipe 6, a water pump 7, a second water pipe 8, a control valve 9, a third water pipe 10 and a first water tank 11, the two ends of the first water pipe 6 are respectively connected to a water inlet and outlet of the water tank 1 and a water inlet and outlet of the water pump 7, the two ends of the second water pipe 8 are respectively connected to the other water inlet and outlet of the water pump 7 and one end of the control valve 9, and the two ends of the third water pipe 10 are respectively connected to the other end of the control valve 9 and the first water tank 11.

[0030] In actual application, at the beginning, coolant is stored in the water tank 1, and the two circulating cooling mechanisms 5 are respectively called the first circulating cooling mechanism 5 and the second circulating cooling mechanism 5. The first water tank 11 of the first circulating cooling mechanism 5 stores coolant, and the first water tank 11 of the second circulating cooling mechanism 5 is unloaded; the heat generated by the stamping die during operation is transferred to the support platform 2 via the lower die seat 3, and the heat of the support platform 2 is transferred to the coolant in the water tank 1 via the heat collecting structure 4, and the coolant can cool the heat collecting structure 4, the support platform 2, the lower die seat 3 and the stamping die. When the coolant in the water tank 1 is overheated, the control valve 9 and the water pump 7 of the second circulating cooling mechanism 5 are started, and the water pump 7 pumps the coolant in the water tank 1 into the first water tank 11 of the second circulating cooling mechanism 5, and the control valve 9 and the water pump 7 of the first circulating cooling mechanism 5 are started, and the water pump 7 pumps the coolant in the water tank 1 into the first water tank 11 of the second circulating cooling mechanism 5. The coolant in the first water tank 11 of the circulating cooling mechanism 5 is pumped into the water tank 1 to replace the coolant in the water tank 1, thereby ensuring the cooling effect, and the coolant stored in the first water tank 11 of the second circulating cooling mechanism 5 can be naturally cooled and cooled. The first water tank 11 of the first circulating cooling mechanism 5 is cooled under no-load conditions, so that the temperature of the first water tank 11 itself drops to room temperature, which is beneficial to cooling the coolant drawn out of the water tank 1 and improving the efficiency of cooling the coolant; when the coolant in the water tank 1 is overheated again, the control valve 9 and the water pump 7 of the first circulating cooling mechanism 5 are started, and the water pump 7 pumps the coolant in the water tank 1 into the first water tank 11 of the first circulating cooling mechanism 5, and the control valve 9 and the water pump 7 of the second circulating cooling mechanism 5 are started, and the water pump 7 of the second circulating cooling mechanism 5 pumps the coolant in its first water tank 11 into the water tank 1. The cooling device of the present invention uses the first water tanks 11 of the two circulating cooling mechanisms 5 to alternately load the superheated coolant extracted from the water tank 1, alternately supply coolant to the water tank 1, and alternately cool itself down after being unloaded, which is beneficial to the replacement and cooling of the coolant. The heat-collecting structure 4 concentrates the heat and transfers it to the coolant in the water tank 1, greatly improving the cooling efficiency.

[0031] In this embodiment, the circulating cooling mechanism 5 further includes a fourth water pipe 12 and a second water tank 13 , the control valve 9 is a switching valve, and both ends of the fourth water pipe 12 are connected to the third port of the control valve 9 and the second water tank 13 respectively.

[0032] At the start, the first water tank 11 of the first circulating cooling mechanism 5 and the second water tank 13 of the second circulating cooling mechanism 5 store coolant, the second water tank 13 of the first circulating cooling mechanism 5 and the first water tank 11 of the second circulating cooling mechanism 5 are both unloaded, and the water tank 1 stores coolant. In actual application, the coolant in the water tank 1 cools the stamping die on the lower die seat 3. When the coolant in the water tank 1 is overheated, the control valve 9 of the first circulating cooling mechanism 5 is switched to communicate with the unloaded second water tank 13, and the water pump 7 is started, and the water pump 7 pumps the coolant in the water tank 1 to the first circulating cooling mechanism 5. In the second water tank 13 of the mechanism 5, the control valve 9 of the second circulating cooling mechanism 5 is switched to be connected with the fully loaded second water tank 13, and the water pump 7 is started. The water pump 7 pumps the coolant in the second water tank 13 into the water storage tank 1, so that the second water tank 13 is unloaded and cools itself down. The four water tanks of the two circulating cooling mechanisms 5 replace the coolant in the water storage tank 1 in turn. The cooling efficiency of the coolant is high, and the replacement of the coolant is convenient, which improves the cooling efficiency; and two of the four water tanks of the two circulating cooling mechanisms 5 always have coolant in them, and the other two water tanks are cooled down when unloaded, which prolongs the cooling time of the coolant and the water tanks.

[0033] At the beginning, the water tank 1 stores coolant, the first water tank 11 of the first circulating cooling mechanism 5 stores coolant, the second water tank 13 of the first circulating cooling mechanism 5 is unloaded, and the first water tank 11 and the second water tank 13 of the second circulating cooling mechanism 5 are both unloaded. In actual application, the coolant in the water tank 1 cools the stamping die on the lower die seat 3. When the coolant in the water tank 1 is overheated, the control valve 9 of the second circulating cooling mechanism 5 is switched to be connected with the first water tank 11 or the second water tank 13, and the pump 7 is started. The pump 7 pumps the coolant in the water tank 1 to the first water tank 13. Tank 11 or the second water tank 13, the control valve 9 of the first circulating cooling mechanism 5 is switched to be connected with the first water tank 11, the water pump 7 is started, and the water pump 7 pumps the coolant in the first water tank 11 into the water storage tank 1, and the first water tank 11 and the second water tank 13 of the two circulating cooling mechanisms 5 replace the coolant in the water storage tank 1 alternately. The cooling efficiency of the coolant is high, and the replacement of the coolant is convenient, which improves the cooling efficiency; and one of the four water tanks of the two circulating cooling mechanisms 5 is always kept with coolant, and the remaining three water tanks are cooled at no load, which is beneficial to the cooling of the coolant and the water tanks themselves.

[0034] In this embodiment, a temperature probe is provided in the water tank 1, and the temperature probe is used to detect the temperature of the coolant in the water tank 1. In practical applications, the temperature probe monitors the temperature of the coolant in the water tank 1 in real time. When the temperature of the coolant in the water tank 1 exceeds a preset temperature value, the coolant in the water tank 1 is replaced to ensure that the coolant in the water tank 1 can normally cool the stamping die.

[0035] In this embodiment, the temperature probe is electrically connected to the controller 14, and the control valve 9 and the water pump 7 are electrically connected to the controller 14. The controller 14 can display the temperature monitored by the temperature probe, and control the corresponding control valve 9 and the water pump 7 to work according to the temperature monitoring result of the temperature probe.

[0036] In this embodiment, the water pump 7 includes a water pumping box 15, a water pumping wheel 16 rotatably disposed in the water pumping box 15, and a rotary driver 17 installed outside the water pumping box 15 and used to drive the water pumping wheel 16 to rotate. The two side ports of the water pumping box 15 are respectively connected to the first water pipe 6 and the second water pipe 8; specifically, the rotary driver 17 can be a motor. In actual application, the rotary driver 17 drives the water pumping wheel 16 to rotate, and the rotating water pumping wheel 16 will pump out the coolant in the water storage tank 1 or pump the coolant in the water tank into the water storage tank 1.

[0037] Of course, the water pump 7 may also be a gear pump.

[0038] In this embodiment, a cavity 18 is recessed on the bottom surface of the lower mold base 3, and the table plate of the support platform 2 extends into the cavity 18, so that the structure of the support platform 2 and the lower mold base 3 is compact and the fit is closer, which increases the contact area, thereby increasing the heat transfer area for cooling, and the position accuracy between the lower mold base 3 and the support platform 2 is high, and the working stability of both is good.

[0039] In this embodiment, the heat collecting structure 4 includes a plurality of conical blocks 19 disposed at the bottom of the support platform 2, the plurality of conical blocks 19 are disposed in a rectangular array, and the tips of the conical blocks 19 face the water reservoir 1 and extend into the coolant in the water reservoir 1. This structural design increases the contact area between the heat collecting structure 4 and the coolant, which is beneficial to improving the efficiency of cooling.

[0040] In this embodiment, the support platform 2 has a positioning hole on its foot, and a positioning column is protruding from the bottom wall of the water tank 1, and the positioning column is inserted into the positioning hole. This structural design allows the support platform 2 to be placed in the water tank 1 with high position accuracy and good stability.

[0041] In this embodiment, the outer surface of the first water tank 11 and the outer surface of the second water tank 13 are both provided with a plurality of heat sinks 20. The heat sinks 20 can quickly dissipate heat and cool the first water tank 11 and the second water tank 13.

[0042] In this embodiment, the bottom of the water tank 1 is provided with anti-skid feet 21, which have good protection effect and improve the working stability of the cooling device. Specifically, the anti-skid feet 21 can be supported by heat-insulating materials to play a role in heat insulation.

[0043] The present invention also provides a stamping die cooling method, based on the application of the stamping die cooling device, comprising the following method steps:

[0044] A. The water tank 1 stores coolant, the support platform 2 supports the stamping die, the heat collecting structure 4 on the support platform 2 extends into the coolant, and the coolant cools the lower die base 3 on the support platform 2 and the stamping die;

[0045] B. When the coolant in the water tank 1 is too high, a water pump 15 of a circulating cooling mechanism 5 pumps the coolant in the water tank 1 into the first water tank 11 of the circulating cooling mechanism 5;

[0046] C. The water pump 15 of another circulating cooling mechanism 5 pumps the coolant in the first water tank 11 of the circulating cooling mechanism 5 into the water storage tank 1;

[0047] D. The two circulating cooling mechanisms 5 work in a cycle according to the above steps, and replace the coolant in the water storage tank 1 alternately.

[0048] The cooling method of the present invention uses the first water tanks 11 of the two circulating cooling mechanisms 5 to alternately load the superheated coolant extracted from the water tank 1, alternately supply coolant to the water tank 1, and alternately cool down after being unloaded, which is beneficial to the replacement and cooling of the coolant, and the heat-collecting structure 4 concentrates the heat to transfer the heat to the coolant in the water tank 1, thereby greatly improving the cooling efficiency.

[0049] All technical features in this embodiment can be freely combined according to actual needs.

[0050] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A cooling device for a stamping die, characterized in that: The invention comprises a water tank (1), a support platform (2) arranged in the water tank (1), a lower die seat (3) covering the top end of the water tank (1), a heat collecting structure (4) arranged at the bottom of the support platform (2) and extending into the cooling liquid in the water tank (1), and two circulating cooling mechanisms (5) respectively arranged at the two ends of the water tank (1); the table surface of the support platform (2) is in contact with the bottom surface of the lower die seat (3); the circulating cooling mechanism (5) comprises a first water pipe (6), a water pump (7), a second water pipe (8), a control valve (9), a third water pipe (10) and a first water tank (11), the two ends of the first water pipe (6) are respectively connected to a water inlet and outlet of the water storage tank (1) and a water inlet and outlet of the water pump (7), the two ends of the second water pipe (8) are respectively connected to the other water inlet and outlet of the water pump (7) and a port of the control valve (9), and the two ends of the third water pipe (10) are respectively connected to the other port of the control valve (9) and the first water tank (11).

2. A stamping die cooling device according to claim 1, characterized in that: The circulating cooling mechanism (5) further comprises a fourth water pipe (12) and a second water tank (13); the control valve (9) is a switching valve; and both ends of the fourth water pipe (12) are respectively connected to the third port of the control valve (9) and the second water tank (13).

3. A stamping die cooling device according to claim 1, characterized in that: A temperature probe is arranged in the water storage tank (1), and the temperature probe is used to detect the temperature of the coolant in the water storage tank (1).

4. A stamping die cooling device according to claim 3, characterized in that: The temperature probe is electrically connected to a controller (14), and the water pump (7) is electrically connected to the controller (14).

5. The cooling device for a stamping die according to claim 1, characterized in that: The water pump (7) comprises a water pumping box (15), a water pumping wheel (16) rotatably arranged in the water pumping box (15), and a rotary driver (17) installed outside the water pumping box (15) and used for driving the water pumping wheel (16) to rotate. The two side ports of the water pumping box (15) are respectively connected to the first water pipe (6) and the second water pipe (8).

6. A stamping die cooling device according to claim 1, characterized in that: The bottom surface of the lower die seat (3) is concavely provided with a cavity (18), and the table plate of the support platform (2) extends into the cavity (18).

7. A stamping die cooling device according to claim 1, characterized in that: The heat collecting structure (4) comprises a plurality of conical blocks (19) arranged on the bottom of the support platform (2), wherein the plurality of conical blocks (19) are arranged in a rectangular array, and the tips of the conical blocks (19) face the water reservoir (1) and extend into the coolant in the water reservoir (1).

8. The cooling device for a stamping die according to claim 1, characterized in that: The support platform (2) has a locating hole on its foot, and the bottom wall of the water storage tank (1) is provided with a locating column, which is inserted into the locating hole.

9. A stamping die cooling device according to claim 2, characterized in that: The outer surface of the first water tank (11) and the outer surface of the second water tank (13) are both provided with a plurality of heat sinks (20).

10. A method for cooling a stamping die, characterized in that: Based on the application of the cooling device of the stamping die according to any one of claims 1 to 9, the method comprises the following steps: A. A cooling liquid is stored in a water tank (1), a support platform (2) supports the stamping die, a heat collecting structure (4) on the support platform (2) extends into the cooling liquid, and the cooling liquid cools down the lower die base (3) on the support platform (2) and the stamping die; B. When the coolant in the water tank (1) is too high, a water pump (15) of a circulating cooling mechanism (5) pumps the coolant in the water tank (1) into the first water tank (11) of the circulating cooling mechanism (5); C. A water pump (15) of another circulating cooling mechanism (5) pumps the cooling liquid in the first water tank (11) of the circulating cooling mechanism (5) into the water storage tank (1); D. The two circulating cooling mechanisms (5) work in a cycle according to the above steps, and replace the coolant in the water storage tank (1) alternately.

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