Automobile wheel hub casting device

Abstract

The present invention discloses an automobile wheel hub casting device, which belongs to the field of wheel hub casting technology. The device comprises a base plate and a shell arranged on the upper side of the base plate, a cavity is provided inside the shell, a sealing plate is installed at a position corresponding to the cavity at the lower end of the shell, a piston cavity is provided inside one side of the sealing block, a storage air bag is embedded at a position corresponding to the piston cavity on the upper side of the sealing block, and a first one-way valve is installed at a position where the storage air bag and the piston cavity are connected, a water outlet groove is also provided inside the upper side of the sealing block, one end of the water outlet groove is connected to the interior of the storage air bag, and the other end of the water outlet groove is connected to the interior of the mold. The piston plate provided in the present invention can push the release agent into the mold through the storage air bag when the molded wheel hub is not removed, and the gap generated by the vibration when the staff knocks the sealing block can make the release agent flow along the outer wall of the molded wheel hub, thereby sticking to the inner wall of the mold, so that the release agent can be evenly applied to the inside of the mold.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel hub casting, and more particularly to an automobile wheel hub casting device. Background Art

[0002] Wheel casting refers to the process of pouring molten metal (usually aluminum alloy or magnesium alloy) into a pre-designed wheel mold, and then forming a wheel blank of the required shape and size after it cools and solidifies. It is then necessary to go through a series of machining, surface treatment and other processes before it can finally be made into a finished wheel.

[0003] Before pouring the molten metal (blank) into the mold, the staff needs to apply a release agent inside the mold to facilitate demolding after the wheel is formed. However, when using traditional molds, the release agent can only be applied to the mold after the molded wheel is removed. Since the molds used in wheel forging have many edges and corners, it is difficult for the staff to apply the release agent to the corners. As a result, some material will stick to the mold after the blank is formed, making it difficult to demold. Forced demolding can easily damage the mold or the formed wheel. Summary of the Invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide an automobile wheel hub casting device.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] An automobile wheel hub casting device comprises a base plate and a housing disposed on the upper side of the base plate. The housing is formed by splicing a plurality of sealing blocks. A cavity is defined within the housing for accommodating a mold. A sealing plate is mounted at a position corresponding to the cavity at the lower end of the housing. A piston cavity is defined within one side of the sealing block. A piston plate is mounted within the piston cavity. A first return spring is fixedly mounted to the upper end of the piston plate. The piston plate is used to squeeze a release agent into the mold. A gate for pouring is defined on the upper side of the sealing block. A thermal expansion liquid is contained at the lower side of the piston cavity.

[0007] A storage air bag is embedded in the position on the upper side of the sealing block corresponding to the piston cavity. The storage air bag is connected to the interior of the piston cavity, and a first one-way valve is installed at the communication position between the storage air bag and the piston cavity. A water outlet groove is also provided inside the upper side of the sealing block. One end of the water outlet groove is connected to the interior of the storage air bag, and the other end of the water outlet groove is connected to the interior of the mold.

[0008] Furthermore, a liquid inlet pipe is installed through a position on the outer wall of the sealing block corresponding to the upper side of the piston cavity, and a second one-way valve is installed inside the liquid inlet pipe.

[0009] Furthermore, a first contraction groove is opened at the upper end of one side of the cavity, and a blocking block is slidably installed inside the first contraction groove. The blocking block seals the water outlet groove, and a second return spring is fixedly installed on the upper end of the blocking block. The upper end of the second return spring is fixedly connected to the upper end of the inner wall of the first contraction groove.

[0010] Furthermore, a second contraction groove is provided at one end of the first contraction groove, and a limiting block is slidably installed inside the second contraction groove, and the limiting block blocks the blocking block. An extrusion spring is fixedly installed at one end of the limiting block, and the extrusion spring squeezes the limiting block. The upper side of the blocking block close to the end of the limiting block is an inclined structure, and the limiting block squeezes the inclined part on the blocking block.

[0011] Furthermore, a first magnet is slidably installed inside one side of the sealing block, a pull rope is fixedly installed on the outer wall of the first magnet, the other end of the pull rope is fixedly connected to the limiting block, and a second magnet is embedded in the outer wall of the piston plate, and the second magnet is magnetically matched with the first magnet.

[0012] Furthermore, a movable groove is opened at one end of the inner wall of the piston cavity, and a plurality of protruding blocks are slidably installed inside the movable groove. The protruding blocks are used to block the piston plate, and the protruding blocks are elastically connected to the inner wall of the movable groove through compression springs.

[0013] Furthermore, an extrusion rod is slidably installed on the lower side of the movable groove, and an end of the upper side of the extrusion rod close to the protruding block is in an inclined structure, and the inclined part of the extrusion rod squeezes the protruding block.

[0014] Furthermore, a plurality of guide rods are fixedly installed at the lower end of the sealing block, a bellows is provided on the outside of the guide rod, an air pipe is passed through the outer wall of the bellows, the other end of the air pipe is connected to the lower side of the inner part of the movable groove, the lower end of the bellows is in extrusion contact with the upper end of the bottom plate, a threaded rod is provided at the position corresponding to the bottom plate and the guide rod, the end of the threaded rod is in extrusion contact with the guide rod, and the threaded rod is threadedly connected to the bottom plate, and a plurality of support springs are also fixedly installed at the lower end of the sealing block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention can push the release agent into the mold through the storage airbag by providing a piston plate when the molded wheel hub is not removed. When the worker knocks on the sealing block, the gap generated by the vibration can make the release agent flow along the outer wall of the molded wheel hub and stick to the inner wall of the mold, so that the release agent can be evenly applied to the inside of the mold.

[0017] (2) The thermal expansion liquid provided in the present invention can cooperate with the first reset spring to reset the piston plate after shrinkage, and draw the external release agent into the piston cavity again for the next use.

[0018] (3) The present invention can limit the moving position of the piston plate by setting the extrusion rod in conjunction with the extension block. When making wheel hubs of different sizes, the size of the mold placed in the cavity will also be different, and therefore the weight will also be different. The bellows can be used to place the extrusion rod in different positions, thereby automatically determining the amount of release agent that needs to be injected into the mold, thereby avoiding the situation where too much or too little release agent is injected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cavity structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the sealing block of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at center A;

[0023] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0024] Figure 6 This is a partial structural diagram of the second one-way valve of the present invention;

[0025] Figure 7 It is a partial structural diagram of the blocking block and the limiting block of the present invention.

[0026] Description of the numbers in the figure:

[0027] 1. Base plate; 101. Threaded rod;

[0028] 2. Housing; 201. Sealing block; 202. Cavity; 203. Sealing plate; 204. Gate; 205. Storage air bag; 206. First one-way valve; 207. Water outlet trough; 208. Liquid inlet pipe; 209. Second one-way valve; 210. First magnet; 211. Pull rope; 212. Second magnet; 213. Guide rod; 214. Bellows; 215. Air pipe; 216. Support spring;

[0029] 3. Piston chamber; 301. Piston plate; 302. First return spring;

[0030] 4. First contraction groove; 401. Blocking block; 402. Second return spring; 403. Second contraction groove; 404. Limiting block; 405. Extrusion spring;

[0031] 5. Moving slot; 501. Extending block; 502. Compression spring; 503. Extrusion rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 7 A vehicle wheel hub casting device includes a base plate 1 and a shell 2 arranged on the upper side of the base plate 1. The shell 2 is formed by splicing a plurality of sealing blocks 201. A cavity 202 is defined inside the shell 2. The cavity 202 is used to place a mold. A sealing plate 203 is installed at a position corresponding to the cavity 202 at the lower end of the shell 2. A piston cavity 3 is defined inside one side of the sealing block 201. A piston plate 301 is installed inside the piston cavity 3. A first return spring 302 is fixedly installed on the upper end of the piston plate 301. The first return spring 302 squeezes the piston plate 301. The piston plate 301 is used to squeeze a release agent into the mold. A gate 204 for pouring is defined on the upper side of the sealing block 201. A thermal expansion liquid is filled on the lower side of the piston cavity 3.

[0034] A storage air bag 205 is embedded in the position on the upper side of the sealing block 201 corresponding to the piston chamber 3. The storage air bag 205 is connected to the interior of the piston chamber 3, and a first one-way valve 206 is installed at the position where the storage air bag 205 and the piston chamber 3 are connected. A water outlet groove 207 is also provided inside the upper side of the sealing block 201. One end of the water outlet groove 207 is connected to the interior of the storage air bag 205, and the other end of the water outlet groove 207 is connected to the interior of the mold.

[0035] A liquid inlet pipe 208 is installed through the outer wall of the sealing block 201 at a position corresponding to the upper side of the piston chamber 3. A second one-way valve 209 is installed inside the liquid inlet pipe 208. The liquid inlet pipe 208 is connected to an external liquid supply container.

[0036] By adopting the above technical solution, when in use, after the mold is placed into the position of the cavity 202, multiple sealing blocks 201 are put together, and then the sealing plate 203 is fixed on the lower side of the cavity 202, so that the multiple sealing plates 203 are fixed together, and the mold is fixed inside the cavity 202, and then the molten metal solution is poured into the mold through the gate 204. At this time, the temperature in the mold will rise, and the temperature in the piston cavity 3 will rise under the conduction effect of the mold and the sealing block 201. When the temperature in the piston cavity 3 rises, the thermal expansion liquid will expand, and the expansion of the thermal expansion liquid can push the piston plate 301 to make it rise. After the piston plate 301 rises, it can squeeze the piston cavity 3. The release agent inside the upper side of the plug cavity 3 squeezes the first one-way valve 206, which opens after being squeezed, allowing the release agent to enter the storage airbag 205. After the hub is formed, the storage airbag 205 shrinks due to its own toughness, allowing the release agent inside it to enter the water outlet groove 207 and then enter the mold through the water outlet groove 207. At this time, the staff knocks on the sealing block 201 to create a gap between the mold and the formed hub, which facilitates the new release agent to penetrate into various positions inside the mold. After the metal material gradually cools down, the thermal expansion liquid can shrink. At this time, the piston plate 301 can drop to its initial position.

[0037] Among them, after the thermal expansion liquid cools down, the piston plate 301 can descend under the action of gravity and the first return spring 302. During the descending process of the piston plate 301, the pressure on the upper side of the piston chamber 3 can be reduced, thereby opening the second one-way valve 209. After the second one-way valve 209 is opened, the release agent in the external container for storing the release agent can enter the piston chamber 3 through the liquid inlet pipe 208.

[0038] A first contraction groove 4 is formed at the upper end of one side of the cavity 202. A blocking block 401 is slidably mounted inside the first contraction groove 4. The blocking block 401 seals the water outlet groove 207. A second return spring 402 is fixedly mounted on the upper end of the blocking block 401. The upper end of the second return spring 402 is fixedly connected to the upper end of the inner wall of the first contraction groove 4.

[0039] A second contraction groove 403 is formed at one end of the first contraction groove 4, and a limiting block 404 is slidably installed inside the second contraction groove 403. The limiting block 404 blocks the blocking block 401. An extrusion spring 405 is fixedly installed at one end of the limiting block 404. The extrusion spring 405 squeezes the limiting block 404. The end of the upper side of the blocking block 401 close to the limiting block 404 is inclined. The limiting block 404 squeezes the inclined part of the blocking block 401.

[0040] A first magnet 210 is slidably installed inside one side of the sealing block 201, a pull rope 211 is fixedly installed on the outer wall of the first magnet 210, and the other end of the pull rope 211 is fixedly connected to the limiting block 404. A second magnet 212 is embedded in the outer wall of the piston plate 301, and the second magnet 212 is magnetically matched with the first magnet 210.

[0041] By adopting the above technical solution, when the piston plate 301 descends, it can drive the second magnet 212 outside it to descend. During the process of the second magnet 212 descending, it can attract the first magnet 210 to descend by magnetic force. After the first magnet 210 descends, it can pull the pull rope 211. After the pull rope 211 is pulled, it can drive the limiting block 404 to move. When the limiting block 404 moves, it no longer blocks the blocking block 401. At this time, the second return spring 402 can pull the blocking block 401 to make it rise. After the blocking block 401 rises, it no longer blocks the water outlet groove 207. At this time, the contraction of the storage air bag 205 can enable the release agent inside it to enter the water outlet groove 207 and pass through The piston plate 301 passes through the water outlet groove 207 and enters the interior of the mold. When the piston plate 301 drops to a certain position, due to the squeezing of the first return spring 302 and the action of the second return spring 402, the position of the piston plate 301 will overcome the suction force between the second magnet 212 and the first magnet 210 as it drops, so that the second magnet 212 no longer attracts the first magnet 210. When the second magnet 212 no longer attracts the first magnet 210, the limiting block 404 can extend from the second shrinkage groove 403 again and squeeze the inclined part on the blocking block 401. Under the decomposition force of the squeezing force, the blocking block 401 drops and blocks the water outlet groove 207 again.

[0042] A movable groove 5 is formed at one end of the inner wall of the piston chamber 3. A plurality of protruding blocks 501 are slidably mounted inside the movable groove 5. The protruding blocks 501 are used to block the piston plate 301. The protruding blocks 501 are elastically connected to the inner wall of the movable groove 5 via compression springs 502.

[0043] An extrusion rod 503 is slidably mounted on the lower side of the movable groove 5. The upper end of the extrusion rod 503 close to the protruding block 501 is inclined, and the inclined portion of the extrusion rod 503 squeezes the protruding block 501.

[0044] A plurality of guide rods 213 are fixedly installed at the lower end of the sealing block 201, and a bellows 214 is provided on the outside of the guide rod 213. An air pipe 215 is passed through the outer wall of the bellows 214, and the other end of the air pipe 215 is connected to the lower side of the inner part of the movable groove 5. The lower end of the bellows 214 is in extrusion contact with the upper end of the base plate 1, and a threaded rod 101 is provided at the position corresponding to the base plate 1 and the guide rod 213. The end of the threaded rod 101 is in extrusion contact with the guide rod 213, and the threaded rod 101 is threadedly connected to the base plate 1. A plurality of support springs 216 are also fixedly installed at the lower end of the sealing block 201. The support springs 216 can support the sealing block 201, and the lower end of the support springs 216 is not fixedly connected to the upper end of the base plate 1.

[0045] By adopting the above technical solution, after the staff puts the mold into the cavity 202 and pushes the sealing block 201 to move to the specified position, the threaded rod 101 is rotated to squeeze the guide rod 213, so that the guide rod 213 and the sealing block 201 are fixed. After the sealing block 201 is merged together to form the shell 2, the molten metal solution is injected. Under the action of the gravity of the mold and the molten metal solution, the sealing block 201 can be lowered a certain distance. At this time, the sealing block 201 can cooperate with the bottom plate 1 to squeeze the bellows 214, so that the air in the bellows 214 enters the lower side of the movable groove 5. When the air enters the movable groove 5, it can squeeze the lower end of the extrusion rod 503, so that the extrusion rod 503 rises. After the extrusion rod 503 rises, it can squeeze the protruding block 501 through the inclined part on its upper side, so that the protruding block 501 extends out of the movable groove 5. The extended protruding block 501 can block the piston plate 301, thereby limiting the rising distance of the piston plate 301.

[0046] Instructions for use: When in use, after placing the mold into the cavity 202, put multiple sealing blocks 201 together, and then fix the sealing plate 203 on the lower side of the cavity 202, so that the multiple sealing plates 203 are fixed together, and the mold is fixed inside the cavity 202, and then the molten metal is poured into the mold through the gate 204. At this time, under the action of gravity, the air in the bellows 214 can move the lower side of the inside of the moving groove 5. When the air enters the inside of the moving groove 5, it can squeeze the lower end of the extrusion rod 503, so that the extrusion rod 503 rises. After the extrusion rod 503 rises, it can squeeze the protruding block 501 through the inclined part on its upper side, so that the protruding block 501 protrudes from the moving groove 5. After protruding, the protruding block 5 01 can block the piston plate 301 and limit the rising distance of the piston plate 301. As the temperature is conducted, the heat expansion liquid absorbs heat and expands, which can make the piston plate 301 rise, thereby pushing the release agent into the storage air bag 205. When the temperature gradually decreases, the first magnet 210 pulls the limiting block 404 so that it no longer blocks the blocking block 401. At this time, the release agent can be squeezed into the mold. As the staff knocks on the outer wall of the sealing block 201, the mold vibrates, thereby creating a gap between the molded wheel hub and the mold, so that the release agent can be spread to various positions of the mold. When the molded wheel hub needs to be taken out, the sealing plate 203 is removed and the mold is opened to remove the molded wheel hub from the mold.

[0047] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An automobile wheel hub casting device, comprising a base plate (1) and a housing (2) arranged on the upper side of the base plate (1), characterized in that: The shell (2) is formed by splicing a plurality of sealing blocks (201). A cavity (202) is provided inside the shell (2), and the cavity (202) is used to place a mold. A sealing plate (203) is installed at a position corresponding to the cavity (202) at the lower end of the shell (2). A piston cavity (3) is provided inside one side of the sealing block (201), and a piston plate (301) is installed inside the piston cavity (3). A first return spring (302) is fixedly installed at the upper end of the piston plate (301). The piston plate (301) is used to squeeze a release agent into the mold. A gate (204) for pouring is provided on the upper side of the sealing block (201), and a thermal expansion liquid is installed on the lower side of the piston cavity (3). A storage air bag (205) is embedded in a position on the upper side of the sealing block (201) corresponding to the piston cavity (3), and the storage air bag (205) is communicated with the interior of the piston cavity (3). A first one-way valve (206) is installed at the communication position between the storage air bag (205) and the piston cavity (3). A water outlet groove (207) is also provided inside the upper side of the sealing block (201), and one end of the water outlet groove (207) is communicated with the interior of the storage air bag (205), and the other end of the water outlet groove (207) is communicated with the interior of the mold.

2. The automobile wheel hub casting device according to claim 1, characterized in that: A liquid inlet pipe (208) is installed through a position corresponding to the outer wall of the sealing block (201) and the upper side of the piston chamber (3), and a second one-way valve (209) is installed inside the liquid inlet pipe (208).

3. The automobile wheel hub casting device according to claim 2, characterized in that: A first contraction groove (4) is provided at the upper end of one side of the cavity (202), a blocking block (401) is slidably mounted inside the first contraction groove (4), the blocking block (401) seals the water outlet groove (207), a second return spring (402) is fixedly mounted at the upper end of the blocking block (401), and the upper end of the second return spring (402) is fixedly connected to the upper end of the inner wall of the first contraction groove (4).

4. The automobile wheel hub casting device according to claim 3, characterized in that: A second shrinkage groove (403) is provided at one end of the first shrinkage groove (4), a limiting block (404) is slidably installed inside the second shrinkage groove (403), the limiting block (404) blocks the blocking block (401), an extrusion spring (405) is fixedly installed at one end of the limiting block (404), the extrusion spring (405) squeezes the limiting block (404), and an end of the upper side of the blocking block (401) close to the limiting block (404) is in an inclined structure, and the limiting block (404) squeezes the inclined portion of the blocking block (401).

5. The automobile wheel hub casting device according to claim 4, characterized in that: A first magnet (210) is slidably mounted inside one side of the sealing block (201), a pull rope (211) is fixedly mounted on the outer wall of the first magnet (210), the other end of the pull rope (211) is fixedly connected to the limiting block (404), and a second magnet (212) is embedded in the outer wall of the piston plate (301), and the second magnet (212) is magnetically matched with the first magnet (210).

6. The automobile wheel hub casting device according to claim 5, characterized in that: A movable groove (5) is provided at one end of the inner wall of the piston cavity (3), and a plurality of protruding blocks (501) are slidably installed inside the movable groove (5). The protruding blocks (501) are used to block the piston plate (301), and the protruding blocks (501) are elastically connected to the inner wall of the movable groove (5) via compression springs (502).

7. The automobile wheel hub casting device according to claim 6, characterized in that: An extrusion rod (503) is slidably mounted on the lower side of the movable groove (5), and an upper end of the extrusion rod (503) close to the protruding block (501) is in an inclined structure, and the inclined portion of the extrusion rod (503) extrudes the protruding block (501).

8. The automobile wheel hub casting device according to claim 7, characterized in that: A plurality of guide rods (213) are fixedly mounted on the lower end of the sealing block (201), a bellows (214) is provided on the outer surface of the guide rod (213), an air pipe (215) is provided through the outer wall of the bellows (214), the other end of the air pipe (215) is communicated with the lower side of the inner portion of the movable groove (5), the lower end of the bellows (214) is in extrusion contact with the upper end of the bottom plate (1), a threaded rod (101) is provided at a position corresponding to the bottom plate (1) and the guide rod (213), the end of the threaded rod (101) is in extrusion contact with the guide rod (213), and the threaded rod (101) is threadedly connected to the bottom plate (1), and a plurality of support springs (216) are also fixedly mounted on the lower end of the sealing block (201).

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