Water-cooling type hub machining die

Abstract

The utility model relates to the technical field of hub casting, and discloses a water-cooling type hub machining die which comprises a rear die and a front die, buffer heat insulation parts used for cooling a hub are arranged on the left side of the rear die and the right side of the front die, and each buffer heat insulation part comprises a rear cooling box attached to the left side of the rear die and further comprises a front cooling box attached to the right side of the front die. An oil cavity is formed between the rear cooling box and the front cooling box, a water cooling part is arranged in the oil cavity and comprises a heat absorption pipe, and flowing cooling water is arranged in the heat absorption pipe. The cooling oil is contained in the oil cavity of the buffer heat insulation part so that part of heat can be effectively absorbed, instant evaporation of the cooling water in the heat absorption pipe can be prevented, the cooling oil wraps the outer wall of the heat absorption pipe so that release of heat can be accelerated, the cooling oil has high specific heat capacity, but the concentration is high, circulation is slow, and the cooling water has high flowability; heat of cooling oil can be rapidly taken away, and instant evaporation of cooling water can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub casting technology, and in particular to water-cooled wheel hub processing molds. Background Technology

[0002] Wheel hub machining molds are specialized tools used to produce automotive wheels. They are typically used to produce segmented wheels, which are then assembled. Wheel hub machining molds are an indispensable part of the automotive manufacturing industry, used to produce high-strength, high-precision, and high-reliability automotive wheels. These wheels play a crucial role in improving the overall performance and safety of vehicles. The molded wheels reach high temperatures and require water cooling systems for dissipation.

[0003] In existing water-cooled wheel hub processing molds, the coolant directly adheres to the mold surface. When the wheel hub is formed by the molten aluminum injected into the mold, it reaches a high temperature of 600 degrees Celsius. This high temperature will cause the coolant to boil and evaporate instantly, making long-term circulation cooling impossible and resulting in coolant consumption. Another water-cooling method uses a hollow cooling box with cooling pipes suspended inside, not in direct contact with the mold. This method of heat conduction through air has poor cooling effect and long waiting time. Utility Model Content

[0004] In order to overcome the problems of existing technologies where cooling water that is in direct contact with the mold evaporates instantly, and where air conduction of heat has poor cooling effect and long cooling time.

[0005] The technical solution of this utility model is as follows: a water-cooled wheel hub processing mold, including a rear mold and a front mold that can fit together. A buffer heat insulation part for cooling the wheel hub is provided on the left side of the rear mold and the right side of the front mold. The buffer heat insulation part includes a rear cooling box that fits the left side of the rear mold and a front cooling box that fits the right side of the front mold. The top of the rear cooling box and the front cooling box are respectively provided with oil cavities for containing cooling oil. A water-cooling cooling part is provided inside the oil cavity. The water-cooling cooling part includes a heat absorption pipe. Cooling water flows inside the heat absorption pipe. The heat absorption pipe is curved inside the oil cavity. One end of the heat absorption pipe passes through the bottom of the oil cavity and extends downward. The other end of the heat absorption pipe is located above the oil cavity.

[0006] Preferably, both the rear cooling box and the front cooling box are covered with a top cover, which includes a clearance hole to avoid the heat absorption pipe, and the cooling water in the heat absorption pipe flows from the lower side to the upper side.

[0007] Preferably, the bottom of the upper cover is provided with a lower convex plate, the outer wall of which can fit against the inner wall of the oil cavity, and a sealing ring is fitted on the outer wall of the lower convex plate. The sealing ring is made of fluororubber.

[0008] Preferably, the rear mold has a rear cavity on its front side and a front cavity on its rear side. A guide post is provided on the outer edge of the rear cavity on the front side of the rear mold. A guide hole corresponding to the guide post is provided on the front mold. A positioning ring coaxial with the guide post is provided on the front side of the rear mold. A positioning groove corresponding to the positioning ring is provided on the rear side of the front mold.

[0009] Preferably, the left and right sides of the rear mold are provided with connecting plates 2, the left and right sides of the front mold are provided with connecting plates 1, the front and rear sides of the connecting plates 2 are provided with support plates 2, and the front and rear sides of the connecting plates 1 are provided with support plates 1.

[0010] Preferably, the bottom of the rear cooler is provided with a second lower oil outlet pipe, the bottom of the front cooler is provided with a first lower oil outlet pipe, and the top of the cover is provided with an oil inlet pipe. Both the first and second lower oil outlet pipes are connected to a control valve below.

[0011] Preferably, the top of the cover is provided with an exhaust valve, and the top edge of the cover is provided with a countersunk hole, through which a screw can pass to connect to the top of the rear or front cooling box.

[0012] The beneficial effects of this utility model are as follows: the oil cavity of the buffer insulation part can effectively absorb some heat by holding cooling oil, and prevent the cooling water in the heat absorption tube from evaporating instantly. The cooling oil wrapping the outer wall of the heat absorption tube can accelerate the release of heat. The cooling oil has a high specific heat capacity, but a high viscosity and slow circulation. The cooling water has a fast flow rate and can quickly remove the heat from the cooling oil. The cooling water can prevent instantaneous evaporation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the guide post structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the connecting plate structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the upper cover structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the heat absorption tube structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Rear mold; 10. Rear cavity; 11. Guide post; 111. Positioning ring; 12. Connecting plate two; 121. Support plate two; 13. Rear cooling box; 132. Lower oil outlet pipe two; 2. Front mold; 20. Front cavity; 21. Guide hole; 211. Positioning groove; 22. Connecting plate one; 221. Support plate one; 23. Front cooling box; 232. Lower oil outlet pipe one; 30. Top cover; 301. Oil inlet pipe; 302. Exhaust valve; 303. Countersunk hole; 304. Lower convex plate; 3041. Clearance hole; 305. Sealing ring; 4. Heat absorption pipe; 50. Oil cavity. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5This utility model provides an embodiment of a water-cooled wheel hub processing mold, including a rear mold 1 and a front mold 2 that can fit together. Buffer and heat insulation parts for cooling the wheel hub are provided on the left side of the rear mold 1 and the right side of the front mold 2. The buffer and heat insulation parts include a rear cooling box 13 fitted to the left side of the rear mold 1 and a front cooling box 23 fitted to the right side of the front mold 2. The tops of the rear cooling box 13 and the front cooling box 23 are respectively provided with oil cavities 50 for containing cooling oil. A water-cooling section is provided inside the oil cavity 50, including a heat absorption pipe 4. Cooling water flows inside the heat absorption pipe 4, which is curved within the oil cavity 50. One end of the heat absorption pipe 4 passes through the bottom of the oil cavity 50 and extends downwards. The other end of the heat-absorbing pipe 4 is located above the oil cavity 50. The cooling oil in the oil cavity 50, which is filled with a buffer and heat insulation part, can effectively absorb some heat and prevent the cooling water in the heat-absorbing pipe 4 from evaporating instantly. The cooling oil wrapping around the outer wall of the heat-absorbing pipe 4 can accelerate the release of heat. The curved heat-absorbing pipe 4 in the oil cavity 50 can effectively increase the heat absorption area. The rear cooling box 13 and the front cooling box 23 are respectively provided on the left side of the rear mold 1 and the right side of the front mold 2 to accelerate the cooling speed. The cooling oil has a high specific heat capacity, but its viscosity is high and its circulation is slow. The cooling water has a fast flow rate and can quickly remove the heat from the cooling oil. The cooling water can prevent instantaneous evaporation. The water-cooled wheel hub processing mold is suitable for split-type... In the production of one half of the wheel hub, the top of both the rear cooler 13 and the front cooler 23 are covered with an upper cover 30. The upper cover 30 includes a clearance hole 3041 to avoid the heat absorption pipe 4. The cooling water in the heat absorption pipe 4 flows from the lower side to the upper side. The upper cover 30 blocks the top of the oil chamber 50 to prevent impurities from falling in. The cooling water in the heat absorption pipe 4 flows from the bottom to the top, which facilitates the discharge of water vapor along the pipe and reduces the possibility of accumulation in the heat absorption pipe 4. The bottom of the upper cover 30 is provided with a lower convex plate 304. The outer wall of the lower convex plate 304 can fit against the inner wall of the oil chamber 50. A sealing ring 305 is fitted on the outer wall of the lower convex plate 304. The sealing ring 305 is made of fluororubber. The specially made fluororubber sealing ring 305, made with existing technology, can withstand high temperatures, preventing ordinary sealing rings 305 from being damaged by high temperatures. The rear mold 1 has a rear cavity 10 on its front side, and the front mold 2 has a front cavity 20 on its rear side. A guide post 11 is provided on the outer edge of the rear cavity 10 on the front side of the rear mold 1. The front mold 2 has a guide hole 21 corresponding to the guide post 11. A positioning ring 111 is provided on the front side of the rear mold 1, coaxial with the guide post 11. A positioning groove 211 corresponding to the positioning ring 111 is provided on the rear side of the front mold 2. The stability of the movement of the rear mold 1 is increased by the cooperation of the guide post 11 and the guide hole 21. Here, the rear mold 1 is a moving mold and has a smaller weight than the front mold 2.

[0021] Please see Figure 2 - Figure 5In this embodiment, connecting plates 212 are provided on the left and right sides of the rear mold 1, connecting plates 122 are provided on the left and right sides of the front mold 2, and supporting plates 221 are provided on the front and rear sides of the connecting plates 212. Supporting plates 221 are provided on the front and rear sides of the connecting plates 122. The connecting plates 122 increase the stability of the connection of the front mold 2, and the connecting plates 212 increase the stability of the connection of the rear mold 1, thereby increasing the stability of the split-type wheel hub forming. The bottom of the rear cooling box 13 is provided with a lower oil outlet pipe 232, the bottom of the front cooling box 23 is provided with a lower oil outlet pipe 232, and the top of the upper cover 30 is provided with an oil inlet pipe 301. The lower oil outlet pipe 232 and the lower oil outlet pipe 232 are connected to the lower oil outlet pipe 232. Control valves are connected to the bottom of oil pipe 232. The circulation of cooling oil is controlled by rotating the control valves at the bottom of oil pipe 1 and oil pipe 232 to prevent the cooling oil in oil chamber 50 from leaking out. Oil inlet pipe 301 allows cooling oil to enter oil chamber 50. The top of the cover 30 is equipped with an exhaust valve 302. The top edge of the cover 30 is equipped with a countersunk hole 303. A screw can pass through the countersunk hole 303 and connect to the top of the rear cooler 13 or the front cooler 23. The exhaust valve 302 selectively releases the air pressure in oil chamber 50 to prevent the rear cooler 13 or the front cooler 23 from being damaged by high pressure.

[0022] During operation, firstly, connect the oil inlet pipe 301 to the oil supply pipe, and connect the lower oil outlet pipe 232 and lower oil outlet pipe 132 to the oil outlet pipe. The control valves below the lower oil outlet pipe 232 and lower oil outlet pipe 132 are in the closed state. The oil chamber 50 is filled with four-fifths of cooling oil. Connect the lower end of the heat absorption pipe 4 to the water inlet pipe, and the upper end of the heat absorption pipe 4 to the water outlet pipe. The water outlet pipe discharges to the water tank. After molten aluminum is injected into the rear mold 1 and the front mold 2, the cooling oil in the oil chamber 50 absorbs heat, and the expanded air in the oil chamber 50 is discharged from the exhaust valve 302. At the same time, the cooling oil in the heat absorption pipe 4... Water is supplied from the bottom to the top. When the temperature of the water circulating out of the oil chamber 50 is detected at 100 degrees Celsius at the outlet of the water outlet pipe, the oil inlet pipe 301 supplies oil into the oil chamber 50. The control valves at the bottom of the lower oil outlet pipe 132 and the lower oil outlet pipe 232 open, discharging cooling oil to the outside of the oil chamber 50. Both the cooling oil and cooling water here are recycled. The cooling water and cooling oil circulating to the outside of the oil chamber 50 are cooled by corresponding capillary channels so that they can be recirculated into the oil chamber 50 for further cooling. The sealing rubber parts here are all made of high-temperature resistant fluororubber using existing technology.

[0023] Through the above steps, the oil cavity 50 of the buffer insulation part can effectively absorb some heat by holding cooling oil, preventing the cooling water in the heat absorption tube 4 from evaporating instantly. The cooling oil wrapping the outer wall of the heat absorption tube 4 can accelerate the release of heat. The cooling oil has a high specific heat capacity, but it has a high viscosity and slow circulation. The cooling water has a fast flow rate and can quickly remove the heat from the cooling oil. The cooling water can prevent instantaneous evaporation, thus solving the problem in the prior art that the cooling water in direct contact with the mold will evaporate instantly, while the cooling effect of air conduction is poor and the waiting time for cooling is long.

Claims

1. A water-cooled wheel hub machining mold, characterized in that: It includes a rear mold (1) and a front mold (2) that can fit together. A buffer heat insulation part for cooling the wheel hub is provided on the left side of the rear mold (1) and the right side of the front mold (2). The buffer heat insulation part includes a rear cooling box (13) that fits the left side of the rear mold (1) and a front cooling box (23) that fits the right side of the front mold (2). The top of the rear cooling box (13) and the front cooling box (23) are respectively provided with an oil cavity (50) for containing cooling oil. The inside of the oil cavity (50) is provided with a water cooling part. The water cooling part includes a heat absorption pipe (4). The heat absorption pipe (4) contains flowing cooling water. The heat absorption pipe (4) is bent in the oil cavity (50). One end of the heat absorption pipe (4) passes through the bottom of the oil cavity (50) and extends downward. The other end of the heat absorption pipe (4) is located above the oil cavity (50).

2. The water-cooled wheel hub processing mold according to claim 1, characterized in that: The top of both the rear cooling box (13) and the front cooling box (23) are covered with a cover (30). The cover (30) includes a clearance hole (3041) to avoid the heat absorption pipe (4). The cooling water in the heat absorption pipe (4) flows from the lower side to the upper side.

3. The water-cooled wheel hub processing mold according to claim 2, characterized in that: The bottom of the top cover (30) is provided with a lower convex plate (304), the outer wall of the lower convex plate (304) can fit the inner wall of the oil cavity (50), and a sealing ring (305) is fitted on the outer wall of the lower convex plate (304). The sealing ring (305) is made of fluororubber.

4. The water-cooled wheel hub processing mold according to claim 3, characterized in that: The rear mold (1) has a rear cavity (10) on its front side and the front mold (2) has a front cavity (20) on its rear side. A guide post (11) is provided on the outer edge of the rear cavity (10) on the front side of the rear mold (1). A guide hole (21) corresponding to the guide post (11) is provided on the front side of the rear mold (1). A positioning ring (111) coaxial with the guide post (11) is provided on the front side of the rear mold (1). A positioning groove (211) corresponding to the positioning ring (111) is provided on the rear side of the front mold (2).

5. The water-cooled wheel hub processing mold according to claim 4, characterized in that: The left and right sides of the rear mold (1) are respectively provided with connecting plate 2 (12), the left and right sides of the front mold (2) are respectively provided with connecting plate 1 (22), the front and rear sides of connecting plate 2 (12) are provided with support plate 2 (121), and the front and rear sides of connecting plate 1 (22) are provided with support plate 1 (221).

6. The water-cooled wheel hub processing mold according to claim 5, characterized in that: The bottom of the rear cooler (13) is provided with a second lower oil outlet pipe (132), the bottom of the front cooler (23) is provided with a first lower oil outlet pipe (232), the top of the cover (30) is provided with an oil inlet pipe (301), and control valves are connected to the bottom of the first lower oil outlet pipe (232) and the second lower oil outlet pipe (132).

7. The water-cooled wheel hub processing mold according to claim 6, characterized in that: The top of the cover (30) is provided with an exhaust valve (302), and the top edge of the cover (30) is provided with a countersunk hole (303). A screw can pass through the countersunk hole (303) and connect to the top of the rear cooling box (13) or the front cooling box (23).

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