A water-cooled wheel hub forming mold

Abstract

This invention belongs to the field of wheel hub forming technology, specifically a water-cooled wheel hub forming mold, including a base plate; a lower mold is fixedly connected to the top of the base plate, and two side molds are installed on the base plate through an installation mechanism, the two side molds cooperating with the lower mold; each side mold has an internal cavity; a cooling mechanism is provided in the cavity; water in the storage tank is pumped to the cooling pipe through a circulating pump, the cooling pipe removes heat from the side mold, and finally flows to the cooling water tank through the outlet, where it is cooled, and then flows back to the storage tank through a connecting pipe; a humidity sensor monitors the humidity in the cavity, and when the humidity exceeds a set value, an exhaust fan is turned on to discharge water vapor from the cavity, reducing the humidity inside the cavity and preventing the cooling pipes and fins from getting damp and rusting, which would affect the normal operation of the cooling system. At the same time, the exhaust fan discharges water vapor to prevent excessive pressure in the cavity, which could cause deformation of the side molds.

Description

Technical Field

[0001] This invention belongs to the field of wheel hub forming technology, specifically a water-cooled wheel hub forming mold. Background Technology

[0002] As one of the most important moving parts of a car, wheel hubs have high requirements for performance, weight, and service life. Currently, aluminum alloy wheels stand out in the automotive industry due to their advantages such as light weight, fast heat dissipation, good shock absorption, long life, and good balance. Aluminum alloy wheels are generally produced using intelligent casting methods.

[0003] A Chinese patent with announcement number CN208322016U discloses a high-efficiency wheel hub water-cooling mold, including a mold frame, an inner mold, a side mold, and a bottom mold. The mold frame is provided with casting holes. The side mold is connected to a side water inlet pipe and a side water outlet pipe on its outer side. The inner mold is provided with a water inlet ring and a water outlet ring in its center. The water inlet ring is connected to an upper water inlet pipe, and the water outlet ring is connected to an upper water outlet pipe. Both the side mold and the inner mold are provided with flow dividers. The bottom mold is provided with a flow divider cone in its center. The flow divider cone includes a cooling head. The cooling head is provided with a cone cavity. The cone cavity is provided with an inlet cone pipe that communicates with the water inlet ring. The cooling head is connected to an outlet cone pipe on its side. The two ends of the outlet cone pipe are respectively connected to the cone cavity and the water outlet ring. This high-efficiency wheel hub water-cooling mold can quickly cool down the wheel hub. The point cooling method adopted also effectively improves the uniformity of wheel hub cooling, prevents quality problems caused by uneven cooling, and effectively improves the production efficiency and quality of the manufacturer.

[0004] In current technology, during the cooling process, when cold water encounters high-temperature casting molten liquid, a large amount of water vapor may be generated. If the water vapor is not dealt with in time, it will not only cause the internal components of the side mold to become damp, but also increase the pressure inside the side mold, causing damage to the side mold. As a result, the two ends of the side mold will no longer fit with the upper and lower molds, thus affecting the casting of the wheel hub.

[0005] Therefore, the present invention provides a water-cooled wheel hub forming mold. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A water-cooled wheel hub forming mold, comprising a base plate; a lower mold fixedly connected to the top of the base plate; two side molds mounted on the base plate via an installation mechanism, the two side molds cooperating with the lower mold; each side mold having an internal cavity; a cooling mechanism provided within the cavity; the cooling mechanism comprising fins and cooling pipes; multiple fins, all fixedly connected to the inner wall of the cavity near the lower mold; the cooling pipes being annular and inserted into the fins; the bottom of the base plate... A cooling box is fixedly connected, and a water storage tank and a cooling water tank are fixedly connected inside the cooling box; the water storage tank and the cooling water tank are connected and fixedly connected through a connecting pipe, and the water inlet end of each cooling pipe is connected and fixedly connected to the water storage tank; the water outlet end of each cooling pipe is connected and fixedly connected to the cooling water tank; a circulation pump is installed at the water inlet end of each cooling pipe; multiple humidity sensors are fixedly connected to the top inner wall of the cavity; dustproof plates are hollowed out and fixedly connected to the side walls of the side mold, and exhaust fans are installed on the side walls of the dustproof plates near the cavity; the humidity sensors are electrically connected to the exhaust fans.

[0008] Preferably, the mounting mechanism includes a connecting plate fixedly attached to the bottom of two side molds; a sliding opening is provided on the base plate, and the connecting plate is slidably connected within the sliding opening; a bidirectional ball screw is rotatably connected to the cooling water tank via a bearing, and the connecting plates are threadedly connected to the bidirectional ball screw; two guide rods are fixedly attached to the inner wall of the cooling tank, and the connecting plate is slidably connected to the two guide rods; one end of the bidirectional ball screw extends to the outside of the cooling tank and is fixedly attached to a rotating block.

[0009] Preferably, a movable cavity is provided at the connection between the lower mold and the base plate. A first electric push rod is fixedly connected to the bottom inner wall of the movable cavity. A lifting plate is fixedly connected to the output end of the first electric push rod. Multiple push rods are installed on the top of the lifting plate. A first pressure sensor is provided at the connection between the push rod and the lifting plate. A spring is sleeved on the outside of each push rod. The two ends of the spring are respectively fixed to the top of the lifting plate and the top inner wall of the movable cavity.

[0010] Preferably, a spiral water pipe is fixedly connected to the lifting plate, and two sets of spiral water pipes are provided and interconnected; the inlet end of the spiral water pipe is fixedly connected to the water storage tank; the outlet end of the spiral water pipe is fixedly connected to the cooling water tank; and a water pump is installed on the inlet pipe of the spiral water pipe.

[0011] Preferably, the cavity is further provided with multiple temperature sensors, and the water inlet pipe of the cooling pipe is provided with a solenoid valve, which is electrically connected to the temperature sensors.

[0012] Preferably, a mounting frame is fixedly connected to the top of the base plate, four vertical rods are fixedly connected between the mounting frame and the base plate, a top plate is slidably connected to the four vertical rods, an upper mold is fixedly connected to the bottom of the top plate, and the upper mold mates with the inner wall of the side mold; two reciprocating screws are rotatably connected between the mounting frame and the base plate through bearings, and the two ends of the lifting plate are symmetrically threaded onto the reciprocating screws; a driving mechanism is provided at the top of the reciprocating screws.

[0013] Preferably, the drive mechanism includes a first wheel fixedly connected to two reciprocating lead screws; a second electric push rod is fixedly connected to the top of the mounting bracket, and a mounting base is fixedly connected to the output end of the second electric push rod. A second wheel is rotatably connected to the mounting base via a pin, and a synchronous belt is sleeved on the outer side of the second wheel and the two first wheels; a handle is fixedly connected to the top of one of the reciprocating lead screws.

[0014] Preferably, the second rotating wheel is provided with a second pressure sensor, which is electrically connected to the second electric push rod.

[0015] Preferably, the upper mold has a pouring gate, the upper mold has a venting cavity, the bottom of the venting cavity is connected to an exhaust channel, and the bottom of the exhaust channel is shaped like an inverted frustum; an air inlet pipe is connected and fixed to the top plate, and the bottom end of the air inlet pipe is connected and penetrates into the venting cavity.

[0016] Preferably, the cooling pipes are densely arranged at the end near the pouring port and sparsely arranged at the end away from the pouring port.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The water-cooled wheel hub forming mold of the present invention, by setting a humidity sensor, turns on the circulation pump, the circulation pump draws water from the water storage tank to the cooling pipe, the cooling pipe removes the heat in the side mold, and finally flows to the cooling water tank through the outlet, where it is cooled, and then flows back to the water storage tank through the connecting pipe, realizing the recycling of water; the humidity sensor monitors the humidity in the cavity, and when the humidity exceeds the set value, the exhaust fan turns on, and the exhaust fan discharges the water vapor in the cavity, reducing the humidity inside the cavity, preventing the cooling pipe and fins from getting damp and rusting, which would affect the normal operation of cooling. At the same time, the exhaust fan discharges water vapor to prevent the pressure in the cavity from being too high, which would cause the side mold to deform.

[0019] 2. The water-cooled wheel hub forming mold of the present invention comprises a first rotating wheel and a second rotating wheel. By rotating the handle, the handle drives the connected reciprocating screw to rotate, which in turn drives the connected first rotating wheel to rotate. The first rotating wheel drives the synchronous belt to rotate, which in turn drives another first rotating wheel to rotate. This first rotating wheel drives the connected other reciprocating screw to rotate, and the two reciprocating screws drive the lifting plate to move up and down. The lifting plate drives the upper mold to move up and down, thus realizing the raising or lowering of the lifting plate. By adjusting the position of the second rotating wheel, the synchronous rotation of the two reciprocating screws is ensured.

[0020] 3. The water-cooled wheel hub forming mold of the present invention, by setting an exhaust channel, inert gas is introduced into the ventilation chamber through the air inlet pipe to facilitate the demolding of the upper mold and the wheel hub. The inert gas drives the upper mold to demold from the wheel hub. When casting molten metal enters the exhaust channel, the casting molten metal will squeeze the residual gas inside the exhaust channel upward. When squeezed to a certain extent, the pressure of the gas column formed is relatively large, and the casting molten metal will not continue to rise. In addition, the truncated cone-shaped exhaust channel has a large opening at the bottom, and the overflowing casting molten metal may be relatively small. Under the combined action of the gas column and the gas in the air inlet pipe, it is not easy to cause blockage at the bottom of the exhaust channel, thus maintaining the normal demolding operation. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the top plate structure in this invention;

[0025] Figure 4 This is an exploded view of the upper mold, lower mold, and side mold in this invention;

[0026] Figure 5 This is a schematic diagram of the cooling pipe structure in this invention;

[0027] Figure 6 This is a schematic diagram of the lifting plate in this invention;

[0028] Figure 7 This is an enlarged view of point A in this invention;

[0029] Figure 8 This is a schematic diagram of the side mold structure in this invention;

[0030] Figure 9 This is a schematic diagram of the mounting bracket in this invention;

[0031] In the diagram: 1. Base plate; 11. Lower mold; 111. First electric push rod; 112. Lifting plate; 113. Push rod; 114. Spring; 115. Spiral water pipe; 12. Side mold; 121. Dustproof plate; 122. Exhaust fan; 123. Humidity sensor; 124. Cavity; 125. Fin; 126. Cooling pipe; 127. Water tank; 128. Cooling water tank; 129. Connecting pipe; 1210. Circulation pump; 13. Connecting plate; 131. Bidirectional ball screw; 132. Guide rod; 133. Rotary block; 14. Temperature sensor; 2. Mounting bracket; 21. Top plate; 22. Upper mold; 221. Sprue; 222. Air inlet pipe; 223. Vent chamber; 224. Exhaust channel; 23. Vertical rod; 24. Reciprocating screw; 25. First roller; 26. Synchronous belt; 27. Handle; 28. Mounting base; 29. ​​Second roller; 210. Second electric push rod; 3. Cooling box. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1 to 5 As shown in the embodiment of the present invention, a water-cooled wheel hub forming mold includes a base plate 1; a lower mold 11 is fixedly connected to the top of the base plate 1, and two side molds 12 are mounted on the base plate 1 via an installation mechanism, the two side molds 12 cooperating with the lower mold 11; each side mold 12 has an internal cavity 124; a cooling mechanism is provided within the cavity 124; the cooling mechanism includes fins 125 and cooling pipes 126; multiple fins 125 are provided, and are all fixedly connected to the inner side wall of the cavity 124 near the lower mold 11; the cooling pipes 126 are arranged in a loop shape and are all inserted into the fins 125; a cooling box 3 is fixedly connected to the bottom of the base plate 1, and a cooling box 3 is fixedly connected to the cooling box 3. A water storage tank 127 and a cooling water tank 128 are provided. The water storage tank 127 and the cooling water tank 128 are connected and fixedly connected by a connecting pipe 129. The water inlet end of the cooling pipe 126 is connected and fixedly connected to the water storage tank 127. The water outlet end of the cooling pipe 126 is connected and fixedly connected to the cooling water tank 128. A circulation pump 1210 is installed at the water inlet end of the cooling pipe 126. Multiple humidity sensors 123 are fixedly connected to the top inner wall of the cavity 124. Dustproof plates 121 are hollowed out and fixedly connected to the side wall of the side mold 12. A dehumidification fan 122 is installed on the side wall of the dustproof plate 121 near the cavity 124. The humidity sensors 123 are electrically connected to the dehumidification fan 122.

[0034] As one of the most important moving parts of a car, wheel hubs have high requirements for performance, weight, and service life. Currently, aluminum alloy wheels stand out in the automotive industry due to their advantages such as light weight, fast heat dissipation, good shock absorption, long life, and good balance. Aluminum alloy wheels are generally produced using intelligent casting methods.

[0035] When the cooling mechanism provided by this invention requires cooling, the heat dissipation area is expanded by the fins 125, and the heat from the side mold 12 is conducted onto the fins 125. Simultaneously, the circulation pump 1210 is activated, pumping water from the storage tank 127 to the cooling pipe 126. The cooling pipe 126 is configured as a loop within the cavity 124 to prolong the water flow time and increase the cooling effect. The cooling pipe 126 carries away the heat from the side mold 12, and finally the water flows through the outlet to the cooling water tank 128 for cooling. The water then flows back to the storage tank 127 through the connecting pipe 129, achieving water recycling. During the cooling process, when the cold water encounters the high-temperature casting molten metal, it may generate large... If the water vapor is not dealt with in time, it will not only cause the internal components of the side mold 12 to become damp, but also increase the pressure inside the side mold 12, causing damage to the side mold 12. As a result, the two ends of the side mold 12 will no longer fit with the upper mold 22 and the lower mold 11, thus affecting the casting of the wheel hub. At this time, the humidity sensor 123 monitors the humidity inside the cavity 124. When the humidity exceeds the set value, the exhaust fan 122 is turned on to discharge the water vapor inside the cavity 124, reducing the humidity inside the cavity 124 and preventing the cooling pipe 126 and fins 125 from becoming damp and rusting, which would affect the normal operation of the cooling system. At the same time, the exhaust fan 122 discharges the water vapor to prevent the pressure inside the cavity 124 from becoming too high, which would cause the side mold 12 to deform.

[0036] like Figure 4 and Figure 8 As shown, the installation mechanism includes a connecting plate 13 fixedly connected to the bottom of the two side molds 12; a sliding opening is provided on the base plate 1, and the connecting plate 13 is slidably connected in the sliding opening; a bidirectional ball screw 131 is rotatably connected to the cooling water tank 128 through a bearing, and the connecting plate 13 is threadedly connected to the bidirectional ball screw 131; two guide rods 132 are fixedly connected to the inner wall of the cooling box 3, and the connecting plate 13 is slidably connected to the two guide rods 132; one end of the bidirectional ball screw 131 extends to the outside of the cooling box 3 and is fixedly connected to a rotating block 133.

[0037] When the installation mechanism provided by the present invention needs to merge or separate the side molds 12 during use, the rotating block 133 drives the bidirectional ball screw 131 to rotate, which in turn drives the connecting plate 13 to move in the opposite direction. The connecting plate 13 then drives the side molds 12 to move in the opposite direction until the side molds 12 are merged or separated. During the movement, the connecting plate 13 slides on the guide rod 132, which limits the movement of the connecting plate 13 in the horizontal direction. The two side molds 12 are sealed by a sealing strip to ensure the sealing of the casting cavity.

[0038] like Figure 2 and Figure 6 As shown, a movable cavity is provided at the connection between the lower mold 11 and the base plate 1. A first electric push rod 111 is fixedly connected to the bottom inner wall of the movable cavity. A lifting plate 112 is fixedly connected to the output end of the first electric push rod 111. A plurality of push rods 113 are installed on the top of the lifting plate 112. A first pressure sensor is provided at the connection between the push rod 113 and the lifting plate 112. A spring 114 is sleeved on the outside of each push rod 113. The two ends of the spring 114 are respectively fixed to the top of the lifting plate 112 and the top inner wall of the movable cavity.

[0039] The ejector rod 113 provided by this invention is used to eject the formed wheel hub. By activating the first electric push rod 111, the output end of the first electric push rod 111 drives the lifting plate 112 to move, and the lifting plate 112 drives the ejector rod 113 to move, thus ejecting the formed wheel hub. During the ejection process, the spring 114 compensates for the pressure during ejection, and the pressure is monitored by the first pressure sensor. If the pressure is much greater than the weight of the wheel hub, it may be that the adhesion between the wheel hub and the lower mold 11 is too large, and ejection needs to be stopped immediately. Cooling or tapping is required to wait for the adhesion to be eliminated to prevent direct ejection and damage to the surface of the wheel hub.

[0040] like Figure 6 As shown, a spiral water pipe 115 is connected and fixed to the lifting plate 112. There are two sets of spiral water pipes 115, which are interconnected. The inlet end of the spiral water pipe 115 is connected and fixed to the water storage tank 127. The outlet end of the spiral water pipe 115 is connected and fixed to the cooling water tank 128. A water pump is installed on the inlet pipe of the spiral water pipe 115.

[0041] When in use, the spiral water pipe 115 provided by the present invention is used to cool the lower mold 11. When cooling is required, the water pump is turned on, and the water pump draws water from the water storage tank 127 into the spiral water pipe 115. By connecting two spiral water pipes 115 in series, the water flow time is extended, and the cooling effect is increased. The cold water in the spiral water pipe 115 carries away the heat in the side mold 12, and finally flows to the cooling water tank 128 through the outlet end. After being cooled by the cooling water tank 128, it flows back to the water storage tank 127 through the connecting pipe 129, realizing the recycling of cooling water.

[0042] like Figure 2 As shown, the cavity 124 is also equipped with a plurality of temperature sensors 14, and the water inlet pipe of the cooling pipe 126 is equipped with a solenoid valve, which is electrically connected to the temperature sensors 14.

[0043] The temperature sensor 14 provided by the present invention is used to monitor the temperature inside the cavity 124. Depending on the temperature, the opening and flow rate of the solenoid valve can be controlled. When the temperature is high, the flow rate of the cooling water is large, and when the temperature is low, the flow rate of the cooling water is small.

[0044] like Figure 1 and Figure 9 As shown, a mounting frame 2 is fixedly connected to the top of the base plate 1, and four vertical rods 23 are fixedly connected between the mounting frame 2 and the base plate 1. A top plate 21 is slidably connected to the four vertical rods 23, and an upper mold 22 is fixedly connected to the bottom of the top plate 21. The upper mold 22 mates with the inner wall of the side mold 12. Two reciprocating screws 24 are rotatably connected between the mounting frame 2 and the base plate 1 through bearings. The two ends of the lifting plate 112 are symmetrically threaded onto the reciprocating screws 24. A driving mechanism is provided at the top of the reciprocating screws 24.

[0045] When the reciprocating lead screw 24 provided by the present invention needs to drive the upper mold 22 to rise or fall, it drives the two reciprocating lead screws 24 to rotate, thereby driving the lifting plate 112 to move up and down reciprocally. The lifting plate 112 then drives the upper mold 22 to move up and down reciprocally, thus achieving the raising or lowering of the lifting plate 112. During the movement, the lifting plate 112 slides on the vertical rod 23, and the vertical rod 23 limits the movement of the lifting plate 112 in the vertical direction.

[0046] like Figure 9 As shown, the drive mechanism includes a first wheel 25 fixedly connected to two reciprocating lead screws 24; a second electric push rod 210 is fixedly connected to the top of the mounting bracket 2, and a mounting base 28 is fixedly connected to the output end of the second electric push rod 210. A second wheel 29 is rotatably connected to the mounting base 28 via a pin. A synchronous belt 26 is sleeved on the outer side of the second wheel 29 and the two first wheels 25; a handle 27 is fixedly connected to the top of one of the reciprocating lead screws 24.

[0047] When in use, the drive mechanism provided by the present invention rotates the handle 27, which drives the connected reciprocating screw 24 to rotate. The reciprocating screw 24 drives the connected first rotating wheel 25 to rotate. The first rotating wheel 25 drives the synchronous belt 26 to rotate. The synchronous belt 26 drives another first rotating wheel 25 to rotate. The first rotating wheel 25 drives the connected other reciprocating screw 24 to rotate. The two reciprocating screws 24 drive the lifting plate 112 to move. The synchronous belt 26 is also sleeved on the outside of the second rotating wheel 29. The second electric push rod 210 drives the mounting base 28 to move. The mounting base 28 drives the second rotating wheel 29 to move, thereby adjusting the position of the second rotating wheel 29, that is, adjusting the tension of the synchronous belt 26, to ensure that the two reciprocating screws 24 rotate synchronously.

[0048] like Figure 9 As shown, a second pressure sensor is provided on the second rotating wheel 29, and the second pressure sensor is electrically connected to the second electric push rod 210.

[0049] The second pressure sensor provided by the present invention is used to monitor the pressure between the timing belt 26 and the second pulley 29 during use. When the handle 27 is manually rotated, the pressure between the timing belt 26 and the second pulley 29 may change. The pressure signal is transmitted to the system through the second pressure sensor, and the system controls the second electric push rod 210 to drive the pressure adjustment.

[0050] like Figure 2 and Figure 7 As shown, the upper mold 22 has a pouring gate 221, and the upper mold 22 has a venting cavity 223 inside. The bottom of the venting cavity 223 is connected to an exhaust channel 224, and the bottom of the exhaust channel 224 is shaped like an inverted frustum. An air inlet pipe 222 is connected and fixed to the top plate 21, and the bottom end of the air inlet pipe 222 is connected and penetrates into the venting cavity 223.

[0051] When the exhaust channel 224 provided by this invention is used, in order to facilitate the demolding of the upper mold 22 from the wheel hub, inert gas is introduced into the ventilation chamber 223 through the air inlet pipe 222. The inert gas drives the upper mold 22 to demold from the wheel hub. The bottom of the exhaust channel 224 is designed as an inverted frustum shape, and the inner wall is coated with an anti-stick coating. During the casting process, the amount of casting molten liquid is constant, so it will not overflow too much. When casting molten liquid enters the exhaust channel 224, it will squeeze the residual gas inside the exhaust channel 224 upward. When squeezed to a certain extent, the pressure of the gas column formed is relatively large, and the casting molten liquid will not continue to rise. In addition, the inverted frustum shape of the exhaust channel 224 has a large opening at the bottom, so the overflowing casting molten liquid may be relatively small. Under the combined action of the gas column and the gas in the air inlet pipe 222, it is not easy to cause blockage at the bottom of the exhaust channel 224, thus maintaining the normal progress of the demolding operation.

[0052] like Figure 5 As shown, the cooling pipes 126 are densely arranged at the end near the pouring port 221, and sparsely arranged at the end away from the pouring port 221.

[0053] When the cooling pipe 126 provided by the present invention is used, the side near the pouring port 221 has high heat and the hub is thick, so a strong cooling effect is required. By making the cooling pipe 126 dense at the end near the pouring port 221 and sparse at the end away from the pouring port 221, the cooling effect is enhanced by making it dense at the top and sparse at the bottom.

[0054] Working principle: When cooling is required, the heat dissipation area is expanded by fins 125, and the heat from the side mold 12 is conducted onto the fins 125. At the same time, the circulation pump 1210 is turned on, pumping water from the storage tank 127 to the cooling pipe 126. The cooling pipe 126 is set as a loop within the cavity 124 to prolong the water flow time and increase the cooling effect. The heat from the side mold 12 is carried away through the cooling pipe 126, and finally flows to the cooling water tank 128 through the outlet. After being cooled by the cooling water tank 128, the water flows back to the storage tank 127 through the connecting pipe 129, realizing the recycling of water. During the cooling process, when the cold water encounters the high-temperature casting molten liquid, a large amount of water vapor may be generated. If the water vapor is not dealt with in time, it will not only cause the internal components of the side mold 12 to become damp, but also increase the pressure inside the side mold 12, causing damage to the side mold 12. As a result, the two ends of the side mold 12 will no longer fit with the upper mold 22 and the lower mold 11, thus affecting the casting of the wheel hub. At this time, the humidity sensor 123 monitors the humidity inside the cavity 124. When the humidity exceeds the set value, the exhaust fan 122 is turned on to discharge the water vapor inside the cavity 124, reducing the humidity inside the cavity 124 and preventing the cooling pipe 126 and fins 125 from becoming damp and rusting, which would affect the normal operation of the cooling system. At the same time, the exhaust fan 122 discharges the water vapor to prevent the pressure inside the cavity 124 from becoming too high, which would cause the side mold 12 to deform.

[0055] By setting up spiral water pipes 115 for cooling the lower mold 11, when cooling is needed, the water pump is turned on, and the water pump draws water from the water storage tank 127 into the spiral water pipes 115. By connecting two spiral water pipes 115 in series, the water flow time is extended, increasing the cooling effect. The cold water in the spiral water pipes 115 carries away the heat in the side mold 12, and finally flows to the cooling water tank 128 through the outlet. After being cooled by the cooling water tank 128, it flows back to the water storage tank 127 through the connecting pipe 129, realizing the recycling of cooling water.

[0056] When it is necessary to merge or separate the side molds 12, the rotating block 133 is used to drive the bidirectional ball screw 131 to rotate. The bidirectional ball screw 131 drives the connecting plate 13 to move in the opposite direction. The connecting plate 13 drives the side molds 12 to move in the opposite direction until the side molds 12 are merged or separated. During the movement, the connecting plate 13 slides on the guide rod 132. The guide rod 132 limits the movement of the connecting plate 13 in the horizontal direction. The two side molds 12 are sealed by a sealing strip to ensure the sealing of the casting cavity.

[0057] When it is necessary to drive the upper mold 22 to rise or fall, the two reciprocating screws 24 are driven to rotate, and the reciprocating screws 24 drive the lifting plate 112 to move up and down. The lifting plate 112 drives the upper mold 22 to move up and down, thus realizing the rise or fall of the lifting plate 112. During the movement, the lifting plate 112 slides on the vertical rod 23, and the vertical rod 23 limits the movement of the lifting plate 112 in the vertical direction. Rotating the handle 27 causes the connected reciprocating screw 24 to rotate, which in turn causes the connected first wheel 25 to rotate. The first wheel 25 then causes the timing belt 26 to rotate, which in turn causes another first wheel 25 to rotate. This first wheel 25 then causes another connected reciprocating screw 24 to rotate, and the two reciprocating screws 24 together cause the lifting plate 112 to move. The timing belt 26 is also fitted around the outside of the second wheel 29. The second electric push rod 210 drives the mounting base 28 to move, which in turn drives the second wheel 29 to move, thereby adjusting the position of the second wheel 29 and thus the tension of the timing belt 26, ensuring that the two reciprocating screws 24 rotate synchronously.

[0058] During demolding, to facilitate the separation of the upper mold 22 from the wheel hub, inert gas is introduced into the ventilation chamber 223 through the air inlet pipe 222. The inert gas drives the upper mold 22 to detach from the wheel hub. The bottom of the exhaust channel 224 is designed as an inverted frustum shape, and the inner wall is coated with an anti-stick coating. During the casting process, the amount of casting molten metal is constant, so it will not overflow too much. When casting molten metal enters the exhaust channel 224, it will squeeze the residual gas inside the exhaust channel 224 upward. When squeezed to a certain extent, the pressure of the gas column formed is relatively large, and the casting molten metal will not continue to rise. In addition, the inverted frustum-shaped exhaust channel 224 has a large opening at the bottom, so the overflowing casting molten metal may be relatively small. Under the combined action of the gas column and the gas in the air inlet pipe 222, it is not easy to cause blockage at the bottom of the exhaust channel 224, thus ensuring the normal progress of the demolding process.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-cooled wheel hub forming mold, comprising a base plate (1); a lower mold (11) is fixedly connected to the top of the base plate (1), and two side molds (12) are mounted on the base plate (1) via an installation mechanism, the two side molds (12) cooperating with the lower mold (11); each side mold (12) has a cavity (124) inside; a cooling mechanism is provided in the cavity (124); characterized in that: The cooling mechanism includes fins (125) and cooling pipes (126); multiple fins (125) are provided, and all are fixedly connected to the inner wall of the cavity (124) near the lower mold (11); the cooling pipes (126) are arranged in a loop and are all inserted into the fins (125); a cooling box (3) is fixedly connected to the bottom of the base plate (1), and a water storage tank (127) and a cooling water tank (128) are fixedly connected inside the cooling box (3); The water storage tank (127) and the cooling water tank (128) are connected and fixedly connected by a connecting pipe (129). The water inlet end of the cooling pipe (126) is connected and fixedly connected to the water storage tank (127); the water outlet end of the cooling pipe (126) is connected and fixedly connected to the cooling water tank (128); a circulating pump (1210) is installed at the water inlet end of the cooling pipe (126); multiple humidity sensors are fixedly connected to the inner wall of the top of the cavity (124). (123); a dustproof plate (121) is hollowed out and fixed to the side wall of the side mold (12). A dehumidifying fan (122) is installed on the side wall of the dustproof plate (121) near the cavity (124). The humidity sensor (123) is electrically connected to the dehumidifying fan (122). A movable cavity is opened at the connection between the lower mold (11) and the bottom plate (1). A first electric push rod (111) is fixed to the bottom inner wall of the movable cavity. A lifting plate (112) is fixed to the output end of the first electric push rod (111). A plurality of push rods (113) are installed on the top of the lifting plate (112). A first pressure sensor is provided at the connection between the push rod (113) and the lifting plate (112). A spring (114) is sleeved on the outside of the push rod (113). The two ends of the spring (114) are fixed to the top of the lifting plate (112) and the top inner wall of the movable cavity, respectively. A spiral water pipe (115) is connected and fixed to the lifting plate (112). There are two sets of spiral water pipes (115) that are connected to each other. The inlet end of the spiral water pipe (115) is connected and fixed to the water storage tank (127). The outlet end of the spiral water pipe (115) is connected and fixed to the cooling water tank (128). A water pump is installed on the inlet pipe of the spiral water pipe (115).

2. The water-cooled wheel hub forming mold according to claim 1, characterized in that: The installation mechanism includes a connecting plate (13) fixed to the bottom of the two side molds (12); a sliding opening is provided on the bottom plate (1), and the connecting plate (13) is slidably connected in the sliding opening; a bidirectional ball screw (131) is rotatably connected to the cooling water tank (128) through a bearing, and the connecting plate (13) is threadedly connected to the bidirectional ball screw (131); two guide rods (132) are fixedly connected to the inner wall of the cooling box (3), and the connecting plate (13) is slidably connected to the two guide rods (132); one end of the bidirectional ball screw (131) extends to the outside of the cooling box (3) and is fixedly connected to a rotating block (133).

3. The water-cooled wheel hub forming mold according to claim 2, characterized in that: The cavity (124) is also equipped with multiple temperature sensors (14), and the water inlet pipe of the cooling pipe (126) is equipped with a solenoid valve, which is electrically connected to the temperature sensors (14).

4. The water-cooled wheel hub forming mold according to claim 3, characterized in that: The top of the base plate (1) is fixedly connected to a mounting bracket (2), and four vertical rods (23) are fixedly connected between the mounting bracket (2) and the base plate (1). A top plate (21) is slidably connected to the four vertical rods (23), and an upper mold (22) is fixedly connected to the bottom of the top plate (21). The upper mold (22) is engaged with the inner wall of the side mold (12). Two reciprocating screws (24) are rotatably connected between the mounting bracket (2) and the base plate (1) through bearings. The two ends of the lifting plate (112) are symmetrically threaded onto the reciprocating screws (24). A driving mechanism is provided at the top of the reciprocating screws (24).

5. The water-cooled wheel hub forming mold according to claim 4, characterized in that: The drive mechanism includes a first wheel (25) fixedly connected to two reciprocating screws (24); a second electric push rod (210) is fixedly connected to the top of the mounting bracket (2), and a mounting base (28) is fixedly connected to the output end of the second electric push rod (210). A second wheel (29) is rotatably connected to the mounting base (28) via a pin. A synchronous belt (26) is sleeved on the outer side of the second wheel (29) and the two first wheels (25); a handle (27) is fixedly connected to the top of one of the reciprocating screws (24).

6. The water-cooled wheel hub forming mold according to claim 5, characterized in that: The second rotating wheel (29) is equipped with a second pressure sensor, which is electrically connected to the second electric push rod (210).

7. The water-cooled wheel hub forming mold according to claim 6, characterized in that: The upper mold (22) has a pouring gate (221) and a venting cavity (223) inside the upper mold (22). The bottom of the venting cavity (223) is connected to an exhaust channel (224), and the bottom of the exhaust channel (224) is shaped like an inverted frustum. An air inlet pipe (222) is connected and fixed to the top plate (21), and the bottom end of the air inlet pipe (222) is connected and penetrates into the venting cavity (223).

8. The water-cooled wheel hub forming mold according to claim 7, characterized in that: The cooling pipes (126) are densely arranged at the end near the pouring port (221) and sparsely arranged at the end away from the pouring port (221).

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