Aluminum alloy wheel hub manufacturing mold

Abstract

This utility model relates to the field of wheel hub manufacturing mold technology, and in particular to an aluminum alloy wheel hub manufacturing mold, including a base plate, side molds, a rotary table, and a spraying mechanism. A placement rack and a bottom mold are mounted on the base plate; two side molds are symmetrically mounted on the base plate about the center of the bottom mold and slidably mounted thereon. A drive mechanism is mounted on the base plate to drive the two side molds to move closer or further apart synchronously. The rotary table is located at the center of the base plate, and a column is connected to the rotary table. A slide is mounted on the column, and a lifting component A is mounted on the column to drive the slide to rise or fall. A sliding rod is mounted at one end of the slide, connecting to an upper mold. A lifting component B is mounted on the slide to drive the upper mold to rise or fall. The spraying mechanism is mounted on the slide, and in operation, it sprays an auxiliary release agent onto the surface of the bottom mold and the inner surfaces of the side molds. This utility model can spray an auxiliary release agent onto the cavities of the side molds and the bottom mold while demolding, improving demolding efficiency and extending the service life of the mold.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub manufacturing mold technology, and in particular to an aluminum alloy wheel hub manufacturing mold. Background Technology

[0002] Aluminum alloy wheels are usually cast using a split mold, and then finished on a lathe to achieve a standard shape.

[0003] Chinese patent CN222077923U discloses a mold for aluminum alloy wheels. When using this mold to produce titanium alloy wheels, the injection-molded titanium alloy wheels do not require manual demolding. When the upper mold plate lifts and detaches from the lower mold, the telescopic rod at the bottom of the top plate is subjected to pressure and extends and retracts. Then, as the upper mold plate continues to rise and the telescopic rod retracts, it begins to slide downward against the first contact plate. Affected by the sliding of the first contact plate, the second contact plate also drives the ejector pin to extend out of the demolding hole of the upper mold, thus completing the ejection and demolding of the titanium alloy wheel that is attached to the outside of the upper mold.

[0004] However, the device still has shortcomings: it needs to be transferred after demolding before the next wheel hub can be cast, and it lacks a structure for spraying release agent onto the mold. It is prone to premature wear during demolding and is also prone to defects such as scratches and cracks in the casting due to sticking to the mold. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a mold for manufacturing aluminum alloy wheel hubs.

[0006] The technical solution of this utility model is: an aluminum alloy wheel hub manufacturing mold, including a base plate, on which a placement frame and a bottom mold are symmetrically arranged about its center, a grouting hole is provided on the bottom mold, and a grouting pipe communicating with the grouting hole is provided on the base plate;

[0007] The two side molds are symmetrical about the center of the bottom mold and are slidably mounted on the bottom plate. The bottom plate is equipped with a drive mechanism that drives the two side molds to move closer or further apart synchronously.

[0008] A rotating platform is located at the center of the base plate. The rotating platform is connected to a column, and a slide is installed on the column that slides along its height direction. A lifting component A is installed on the column to drive the slide to rise or fall. A slide rod is installed at one end of the slide that slides along its height direction. The lower end of the slide rod is connected to the upper mold, and a lifting component B is installed on the slide to drive the upper mold to rise or fall.

[0009] And a spraying mechanism, which is located at the end of the carriage away from the slide bar. When in operation, the spraying mechanism sprays an auxiliary release agent onto the surface of the bottom mold and the inner surface of the side mold.

[0010] Preferably, a circulation pipe is provided inside the shell of the side mold, with both ends of the circulation pipe extending outside the side mold.

[0011] Preferably, the driving mechanism includes a transmission assembly and a hydraulic cylinder A. The transmission assembly includes a gear A and a rack. A limiting groove is provided on the base plate, and two sliders are symmetrically arranged in the limiting groove. The two sliders are respectively connected to the side molds on the corresponding sides. A rack is provided on the side of the two sliders that are close to each other. The gear A is located at the center of the limiting groove and is rotatably connected to the base plate. The two racks are located on both sides of the gear A and are both meshed with the gear A. The body of the hydraulic cylinder A is connected to the base plate, and the output end of the hydraulic cylinder A is connected to one of the side molds.

[0012] Preferably, the upper mold is provided with several ejector pins that are slidably connected to it. The bottom surface of the ejector pins fits with the forming surface of the upper mold. The ejector pins are connected to the limiting frame, and springs are sleeved on the ejector pins. The two ends of the springs abut against the limiting frame and the side of the upper mold that is close to it, respectively.

[0013] Preferably, a fixing frame is provided on the upper surface of the upper mold, the upper end of the ejector pin passes through the fixing frame and is slidably connected to it, and the limiting frame is located between the upper mold and the fixing frame.

[0014] Preferably, the spraying mechanism includes a turntable, a spray pipe, and a drive assembly. The turntable is rotatably connected to the carriage. A feed pipe coaxially connected to the interior of the turntable is provided on the turntable. The spray pipe is provided on the bottom surface of the turntable and connected to the interior of the turntable. Several nozzles are provided on the spray pipe. The drive assembly is provided on the carriage and drives the turntable to rotate around the axis of the turntable.

[0015] Preferably, the drive assembly includes a motor, gear B, and an external gear ring. The external gear ring is coaxially connected to the turntable, gear B is rotatably connected to the carriage and meshes with the external gear ring, the motor body is mounted on the carriage, and the output end of the motor is connected to the central shaft of gear B.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] By setting up a rotating table and a carriage structure, and placing the upper mold and the spraying mechanism at opposite ends of the carriage, it is possible to demold on one side while spraying an auxiliary release agent onto the inner walls of the side mold and bottom mold cavity on the other side. This reduces mold thermal fatigue and wear, extends service life, prevents defects such as casting scratches and cracks caused by sticking to the mold, and ensures that the surface finish of the wheel hub meets the requirements of subsequent spraying. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the drive mechanism and the two side molds;

[0020] Figure 3 A schematic diagram of the connection structure of the various components on the column;

[0021] Figure 4 This is a schematic diagram of the connection structure of the various components on the upper mold;

[0022] Figure 5 This is a schematic diagram of the connection structure between the turntable, the spray pipe, and the drive assembly.

[0023] Reference numerals: 1. Base plate; 2. Placement frame; 3. Bottom mold; 4. Grouting pipe; 5. Side mold; 6. Circulation pipe; 7. Transmission assembly; 8. Hydraulic cylinder A; 9. Rotary table; 10. Column; 11. Slide frame; 111. Slide rod; 12. Hydraulic cylinder B; 13. Hydraulic cylinder C; 14. Upper mold; 15. Fixing frame; 16. Ejector pin; 17. Limiting frame; 18. Spring; 19. Turntable; 20. Feed pipe; 21. Spraying pipe; 22. Drive assembly. Detailed Implementation

[0024] Example 1

[0025] like Figures 1-5As shown, this utility model proposes an aluminum alloy wheel hub manufacturing mold, including a base plate 1, side molds 5, a rotating table 9, and a spraying mechanism. A placement frame 2 and a bottom mold 3 are symmetrically arranged about the center of the base plate 1. The bottom mold 3 has grouting holes, and the base plate 1 has grouting pipes 4 communicating with the grouting holes. Two side molds 5 are symmetrically arranged about the center of the bottom mold 3 and slidably mounted on the base plate 1. The base plate 1 has a drive mechanism that drives the two side molds 5 to move closer or further apart synchronously. The drive mechanism includes a transmission assembly 7 and a hydraulic cylinder A8. The transmission assembly 7 includes a gear A and a rack. A limiting groove is provided on the base plate 1, and two sliders are symmetrically arranged within the limiting groove. The two sliders are respectively connected to the corresponding side molds 5. A rack is provided on the side of the two sliders that are close to each other. Gear A is located at the center of the limiting groove and is rotatably connected to the base plate 1. The two racks are located on both sides of gear A and mesh with gear A. The body of the hydraulic cylinder A8 is connected to the base plate 1, and the output end of the hydraulic cylinder A8 is connected to one of the side molds 5. A rotary table 9 is located at the center of the base plate 1. The rotary table 9 is connected to a column 10. A slide 11 that slides along its height direction is provided on the column 10. A lifting assembly A that drives the slide 11 to rise or fall is provided on the column 10. The lifting assembly A includes, but is not limited to, a hydraulic cylinder B12. The body of the hydraulic cylinder B12 is connected to the column 10. The output end of the hydraulic cylinder B12 is connected to the slide 11. One end of the slide 11 is provided with a slide rod 111 that slides along its height direction. The lower end of the slide rod 111 is connected to the upper mold 14. A lifting assembly B that drives the upper mold 14 to rise or fall is provided on the slide 11. The lifting assembly B includes, but is not limited to, a hydraulic cylinder C13. The body of the hydraulic cylinder C13 is connected to the slide 11. The output end of the hydraulic cylinder C13 is connected to the upper mold 14. The upper mold 14 is provided with several ejector pins 16 that are slidably connected to it. The bottom surface of the ejector pins 16 fits with the forming surface of the upper mold 14. The ejector pins 16 are connected to the limiting frame 17, and springs 18 are sleeved on the ejector pins 16. The two ends of the springs 18 abut against the limiting frame 17 and the side of the upper mold 14 that are close to it, respectively. A fixing frame 15 is provided on the upper end surface of the upper mold 14. The upper end of the ejector pins 16 passes through the fixing frame 15 and is slidably connected to it. The limiting frame 17 is located between the upper mold 14 and the fixing frame 15. The spraying mechanism is located at the end of the slide 11 away from the slide rod 111. In the working state, the spraying mechanism sprays an auxiliary release agent onto the surface of the bottom mold 3 and the inner surface of the side mold 5. The spraying mechanism includes a turntable 19, a spray pipe 21, and a drive assembly 22. The turntable 19 is rotatably connected to a carriage 11. A feed pipe 20, coaxially connected to the interior of the turntable 19, is mounted on the turntable 19. The spray pipe 21 is mounted on the bottom surface of the turntable 19 and connected to its interior. Several nozzles are mounted on the spray pipe 21. The drive assembly 22 is mounted on the carriage 11 and drives the turntable 19 to rotate around its axis. The drive assembly 22 includes a motor, a gear B, and an external gear ring. The external gear ring is coaxially connected to the turntable 19. The gear B is rotatably connected to the carriage 11 and meshes with the external gear ring. The motor body is mounted on the carriage 11, and the motor output end is connected to the central shaft of the gear B.

[0026] In this embodiment, the feed pipe 20 is connected to an external feed box via a liquid pump. The feed box stores an auxiliary release agent, which is a silicone + synthetic wax composite. During operation, hydraulic cylinder A8 is activated, driving one side mold 5 to slide. The other side mold 5 moves closer together under the transmission of gear A and rack until the side mold 5 closes. Then, the rotary table 9 is activated to rotate the spray pipe 21 above the cavity. Then, hydraulic cylinder B12 is activated, pressing down the slide 11 and inserting the spray pipe 21 into the cavity. The liquid pump is activated, and the auxiliary release agent is sprayed out through the spray pipe 21. The motor is activated, driving the turntable 19 to rotate, so that the spray pipe 21 rotates to spray the auxiliary release agent onto the inner wall of the side mold 5 and the outer surface of the bottom mold 3. After spraying, the slide 11 rises and resets. Then, the rotary table 9 drives the column 10 to rotate 180 degrees, and the upper mold 14 rotates to the bottom mold 3. Directly above, the slide 11 is pushed down again, and the top cover of the upper mold 14 presses on the two side molds 5 to achieve mold closing. Molten aluminum is injected into the cavity through the injection pipe 4. After the injection is completed, the wheel hub is initially shaped. Then the two side molds 5 separate, and the formed wheel hub is stuck on the upper mold 14. The slide 11 rises and drives the wheel hub to rise. Then the slide 11 rotates 180 degrees, and the wheel hub rotates to the top of the placement frame 2. Then the slide 11 descends until the wheel hub falls on the placement frame 2. At this time, the spray pipe 21 on the other side sprays auxiliary release agent on the side molds 5 and the bottom mold 3 again, while the hydraulic cylinder C13 pulls up the upper mold 14 to raise it. After the top of the ejector pin 16 contacts the slide 11, it begins to push the formed wheel hub down. The wheel hub is demolded and falls on the placement frame 2. This cycle is repeated.

[0027] Example 2

[0028] like Figure 1 and Figure 2 As shown, the aluminum alloy wheel hub manufacturing mold proposed in this utility model, compared with Embodiment 1, has a circulation pipe 6 installed inside the shell of the side mold 5, with both ends of the circulation pipe 6 extending out of the side mold 5.

[0029] In this embodiment, the circulation pipe 6 is connected to the external circulation pump and the cold water tank. After the grouting is completed, the circulation pump draws cooling water from the cold water tank to quickly cool the mold and improve the efficiency of wheel hub shaping.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An aluminum alloy wheel manufacturing die characterized by, include: A base plate (1) is provided with a placement frame (2) and a bottom mold (3) symmetrically arranged about its center. A grouting hole is provided on the bottom mold (3), and a grouting pipe (4) connected to the grouting hole is provided on the base plate (1). Side mold (5), the two side molds (5) are symmetrical about the center of the bottom mold (3) and are slidably set on the base plate (1). The base plate (1) is provided with a drive mechanism to drive the two side molds (5) to move closer or further away synchronously. A rotating platform (9) is set at the center of the base plate (1). The rotating platform (9) drives the connected column (10). A slide (11) that slides along its height direction is set on the column (10). A lifting component A that drives the slide (11) to rise or fall is set on the column (10). A slide rod (111) that slides along its height direction is set at one end of the slide (11). The lower end of the slide rod (111) is connected to the upper mold (14). A lifting component B that drives the upper mold (14) to rise or fall is set on the slide (11). And a spraying mechanism, which is located at the end of the carriage (11) away from the slide rod (111). When in operation, the spraying mechanism sprays an auxiliary release agent onto the surface of the bottom mold (3) and the inner surface of the side mold (5).

2. The aluminum alloy wheel manufacturing die of claim 1, wherein, A circulation pipe (6) is installed inside the shell of the side mold (5), and both ends of the circulation pipe (6) extend out of the side mold (5).

3. The aluminum alloy wheel manufacturing die of claim 1, wherein, The drive mechanism includes a transmission assembly (7) and a hydraulic cylinder A (8). The transmission assembly (7) includes a gear A and a rack. A limiting groove is provided on the base plate (1). Two sliders are symmetrically arranged in the limiting groove. The two sliders are connected to the corresponding side molds (5). A rack is provided on the side of the two sliders that are close to each other. The gear A is located at the center of the limiting groove and is rotatably connected to the base plate (1). The two racks are located on both sides of the gear A and are meshed with the gear A. The body of the hydraulic cylinder A (8) is connected to the base plate (1). The output end of the hydraulic cylinder A (8) is connected to one of the side molds (5).

4. The aluminum alloy wheel manufacturing die of claim 1, wherein, The upper mold (14) is provided with several ejector pins (16) that are slidably connected to it. The bottom surface of the ejector pin (16) fits with the forming surface of the upper mold (14). The ejector pin (16) is connected to the limiting frame (17), and a spring (18) is sleeved on the ejector pin (16). The two ends of the spring (18) abut against the limiting frame (17) and the side of the upper mold (14) that is close to it.

5. An aluminum alloy wheel manufacturing die as defined in claim 4, wherein, A fixing frame (15) is provided on the upper surface of the upper mold (14), the upper end of the ejector pin (16) passes through the fixing frame (15) and is slidably connected to it, and the limiting frame (17) is located between the upper mold (14) and the fixing frame (15).

6. An aluminum alloy wheel manufacturing die as defined in claim 1, wherein, The spraying mechanism includes a turntable (19), a spray pipe (21), and a drive assembly (22). The turntable (19) is rotatably connected to the carriage (11). A feed pipe (20) communicating with the interior of the turntable (19) is coaxially arranged on the turntable (19). The spray pipe (21) is arranged on the bottom surface of the turntable (19) and communicates with the interior of the turntable. Several nozzles are arranged on the spray pipe (21). The drive assembly (22) is arranged on the carriage (11) and drives the turntable (19) to rotate around the axis of the turntable (19).

7. An aluminum alloy wheel manufacturing die as defined in claim 6, wherein The drive assembly (22) includes a motor, gear B and an external gear ring. The external gear ring is coaxially connected to the turntable (19). Gear B is rotatably connected to the slide (11) and meshes with the external gear ring. The motor body is mounted on the slide (11), and the output end of the motor is connected to the central shaft of gear B.

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