Low-pressure casting die for aluminum alloy hub

Abstract

The utility model relates to the technical field of casting dies, in particular to a low-pressure casting die of an aluminum alloy hub, which comprises a base and a lower die holder, an upper die holder is arranged above the lower die holder, a cooling mechanism is arranged on one side of the lower die holder, the low-pressure casting die further comprises a lower die table, the lower die table is connected to the inner wall of the lower die holder in a sliding mode, and a plurality of conical holes are formed in the surface of the lower die table. The inner walls of the multiple conical holes are slidably provided with ball valves in a matched mode, the inner top wall of the lower die table is fixedly connected with a fixing block, the surface of the fixing block is fixedly connected with multiple sleeves, the inner walls of the multiple sleeves are fixedly connected with springs, and one ends of the multiple springs are fixedly connected with connecting rods correspondingly. One ends of the multiple connecting rods are fixedly connected with the surfaces of the multiple corresponding ball valves correspondingly, and the surfaces of the multiple connecting rods are slidably connected with the inner walls of the multiple corresponding sleeves correspondingly; during jacking demolding, the inner wall of the peripheral side of the shaping table on the lower mold base is automatically coated with a demolding agent, and the demolding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, and in particular to a low-pressure casting mold for aluminum alloy wheel hubs. Background Technology

[0002] Low-pressure casting, as the main method for producing aluminum alloy wheels, has the advantages of high yield, high degree of automation, and high product performance.

[0003] In the prior art, such as Chinese Patent No. CN220515397U, a low-pressure casting mold for motorcycle aluminum alloy wheels is disclosed, including a lower mold base and an upper mold base. Slide rods are respectively installed at the four corners of the top of the lower mold base, and the tops of the slide rods are respectively connected to the four corners of the bottom of the upper mold base. A forming groove is provided at the top of the lower mold base, and a forming platform is slidably connected inside the forming groove. The forming platform includes a platform body, a protrusion, and a heat insulation plate. The protrusion is installed at the top of the platform body, and the heat insulation plate is installed at the bottom of the platform body. A base is provided at the bottom of the lower mold base, and the base includes a seat frame and a hydraulic cylinder. The hydraulic cylinder is installed at the bottom of the seat frame, and the output end of the hydraulic cylinder extends into the interior of the forming groove and is connected to the bottom of the heat insulation plate. A cooling mechanism is provided on one side of the outer wall of the lower mold base, and a reflux mechanism is provided on one side of the cooling mechanism.

[0004] In the above technical solution, the heat insulation plate is lifted by a hydraulic cylinder, which lifts the platform and moves it up and down until the wheel hub casting at the top of the platform is pushed out of the molding groove, thus completing the demolding of the mold. However, this patent does not apply a release agent to the inner wall of the mold during low-pressure casting, which may cause the inner wall to stick to the casting during demolding, resulting in breakage and damage.

[0005] Based on this, a low-pressure die casting mold for aluminum alloy wheel hubs is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a low-pressure die-casting mold for aluminum alloy wheel hubs to solve the problems mentioned in the background art.

[0007] The technical solution of this utility model is: a low-pressure casting mold for aluminum alloy wheel hubs, including a base, a lower mold base fixedly connected to the upper surface of the base, an upper mold base arranged above the lower mold base, a cooling mechanism arranged on one side of the lower mold base, and further including;

[0008] A lower mold platform is slidably connected to the inner wall of a lower mold base. A rubber ring is fixedly connected to the surface of the lower mold platform. Multiple tapered holes are opened on the surfaces of the lower mold platform and the rubber ring. Ball valves are slidably installed on the inner walls of the multiple tapered holes. A fixing block is fixedly connected to the inner top wall of the lower mold platform. Multiple sleeves are fixedly connected to the surface of the fixing block. Springs are fixedly connected to the inner walls of the multiple sleeves. A connecting rod is fixedly connected to one end of each of the multiple springs. One end of each of the multiple connecting rods is fixedly connected to the surface of the corresponding multiple ball valves. The surfaces of the multiple connecting rods are slidably connected to the inner walls of the corresponding multiple sleeves.

[0009] In some embodiments, a hydraulic cylinder is fixedly connected to the upper surface of the base, and a lifting rod is rotatably connected to the output end of the hydraulic cylinder. Fixed plates are fixedly connected to the inner walls on both sides of the base. A through hole is opened on the upper surface of the fixed plate, and a fixed cylinder is fixedly connected to the inner wall of the through hole.

[0010] In some embodiments, the surface of the fixed cylinder is provided with a guide groove, the surface of the lifting rod is slidably connected to the inner wall of the fixed cylinder, a limit rod is fixedly connected to the surface of the lifting rod, and the surface of the limit rod is adapted to slidely connect to the inner wall of the guide groove.

[0011] In some embodiments, the top end of the lifting rod is fixedly connected to the lower surface of the lower mold table.

[0012] In some embodiments, the lower surface of the lower mold stage is fixedly connected to an injection port, and a control valve is fixedly installed on the surface of the injection port.

[0013] Compared with existing technologies, the significant advantages of this invention are:

[0014] This invention utilizes a lifting rod to raise the lower mold platform. During this process, the ball valve on the lower mold platform is compressed and retracts into the sleeve along with the connecting rod. Because the lower mold platform has a tapered hole, a gap is formed between the ball valve and the tapered hole when the ball valve retracts, causing the release agent stored inside the lower mold platform to overflow. As the lower mold platform rotates 90 degrees, the rubber ring on its surface evenly coats the overflowing release agent onto the inner wall of the molding platform. After demolding, the inner wall of the molding platform is coated with release agent and can be directly used for the next casting operation, improving casting efficiency. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a three-dimensional structural schematic diagram provided in one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the rotary demolding assembly structure provided in one embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the application component provided in one embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base; 2. Lower mold base; 3. Upper mold base; 4. Shaping platform; 5. Cooling mechanism; 6. Hydraulic cylinder; 7. Fixing plate; 8. Fixing cylinder; 9. Guide groove; 10. Lifting and rotating rod; 11. Lower mold platform; 12. Injection port; 13. Fixing block; 14. Rubber ring; 15. Tapered hole; 16. Ball valve; 17. Sleeve; 18. Spring; 19. Limiting rod; 20. Connecting rod. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved low-pressure casting mold for aluminum alloy wheel hubs. The technical solution of this utility model is as follows:

[0023] like Figures 1-3 As shown, a low-pressure casting mold for an aluminum alloy wheel hub includes a base 1, a lower mold base 2 fixedly connected to the upper surface of the base 1, an upper mold base 3 disposed above the lower mold base 2, a cooling mechanism 5 disposed on one side of the lower mold base 2, and further includes;

[0024] The lower mold platform 11 is slidably connected to the inner wall of the lower mold base 2. A rubber ring 14 is fixedly connected to the surface of the lower mold platform 11. The rubber ring 14 is made of a high-temperature resistant material. Multiple conical holes 15 are opened on the surface of the lower mold platform 11 and the rubber ring 14. There are four conical holes 15, which are evenly distributed on the surface of the lower mold platform 11. Adjacent two holes form a 90-degree angle. Ball valves 16 are slidably installed on the inner walls of the multiple conical holes 15. A fixing block 13 is fixedly connected to the inner top wall of the lower mold platform 11. The surface of the fixing block 13... Multiple sleeves 17 are fixedly connected to the surface, and springs 18 are fixedly connected to the inner walls of the multiple sleeves 17. Through the springs 18 and ball valves 16, the ball valves 16 can retract into the lower mold platform 11 when it rises, thereby allowing the release agent to overflow. One end of each of the multiple springs 18 is fixedly connected to a connecting rod 20, and one end of each connecting rod 20 is fixedly connected to the surface of the corresponding ball valves 16. The surfaces of the multiple connecting rods 20 are slidably connected to the inner walls of the corresponding multiple sleeves 17.

[0025] It should be noted that the cooling mechanism 5, upper mold base 3, lower mold base 2 and base 1 in this application are all the same in structure and principle as those in Chinese Patent No. CN220515397U.

[0026] like Figure 2 As shown, in one embodiment, a hydraulic cylinder 6 is fixedly connected to the upper surface of the base 1, and a lifting rod 10 is rotatably connected to the output end of the hydraulic cylinder 6. A fixing plate 7 is fixedly connected to the inner walls of both sides of the base 1. A through hole is opened on the upper surface of the fixing plate 7, and a fixing cylinder 8 is fixedly connected to the inner wall of the through hole. The fixing plate 7 can limit and fix the fixing cylinder 8. A sliding hole with the same diameter as the lifting rod 10 is opened at the bottom end of the fixing cylinder 8 to allow the lifting rod 10 to move and avoid motion interference.

[0027] The surface of the fixed cylinder 8 is provided with a guide groove 9, the guide angle of the guide groove 9 is 90 degrees, and it is adapted to four ball valves 16. The surface of the lifting rod 10 is slidably connected to the inner wall of the fixed cylinder 8. The surface of the lifting rod 10 is fixedly connected to a limit rod 19, and the surface of the limit rod 19 is adapted to slidely connect to the inner wall of the guide groove 9.

[0028] like Figure 2 and Figure 3 As shown, in one embodiment, the top end of the lifting rod 10 is fixedly connected to the lower surface of the lower mold table 11.

[0029] The lower surface of the lower mold base 11 is fixedly connected to an injection port 12, and a control valve is fixedly installed on the surface of the injection port 12. The injection port 12 can be used to add release agent.

[0030] The specific working method is as follows: When demolding, the hydraulic cylinder 6 is activated, which, under the action of the fixed cylinder 8 and the guide groove 9, causes the lifting rod 10 to rotate and rise. During the upward rotation of the lifting rod 10, the lower mold platform 11 can be lifted. When the lower mold platform 11 rises, the ball valve 16 on its surface is squeezed and retracts into the sleeve 17 along with the connecting rod 20. Since the surface of the lower mold platform 11 has a tapered hole 15, when the ball valve 16 retracts, the surface of the ball valve 16 and the tapered hole... A gap is formed between 15, allowing the release agent stored inside the lower mold 11 to overflow. As the lower mold 11 rotates 90 degrees, the rubber ring 14 on the surface of the lower mold 11 can evenly coat the overflowing release agent onto the inner wall of the molding table 4. After demolding, the hydraulic cylinder 6 descends, the lower mold 11 resets, and the ball valve 16 pops out, which can then seal the conical hole 15. At this time, the inner wall of the molding table 4 is coated with release agent and can be directly put into the next casting operation, improving casting efficiency.

[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A low-pressure casting mold for an aluminum alloy wheel hub, comprising a base (1), an upper surface of the base (1) being fixedly connected with a lower mold seat (2), an upper mold seat (3) being arranged above the lower mold seat (2), and a cooling mechanism (5) being arranged on one side of the lower mold seat (2), characterized in that: Also include; The lower die platform (11) is slidingly connected to the inner wall of the lower die seat (2), the surface of the lower die platform (11) is fixedly connected with a rubber ring (14), the surface of the lower die platform (11) and the rubber ring (14) is jointly provided with a plurality of tapered holes (15), the inner wall of the plurality of tapered holes (15) is slidingly fitted with a spherical valve (16), the inner top wall of the lower die platform (11) is fixedly connected with a fixed block (13), the surface of the fixed block (13) is fixedly connected with a plurality of sleeves (17), the inner wall of the plurality of sleeves (17) is fixedly connected with a plurality of springs (18), one end of the plurality of springs (18) is respectively fixedly connected with a connecting rod (20), one end of the plurality of connecting rods (20) is respectively fixedly connected with the surface of the corresponding plurality of spherical valves (16), the surface of the plurality of connecting rods (20) is respectively slidingly connected with the inner wall of the corresponding plurality of sleeves (17).

2. The low pressure casting mold for an aluminum alloy wheel according to claim 1, characterized by: The upper surface of the base (1) is fixedly connected with a hydraulic cylinder (6), the output end of the hydraulic cylinder (6) is rotatably connected with a lifting rotary rod (10), the inner walls of the two sides of the base (1) are fixedly connected with a fixed plate (7), the upper surface of the fixed plate (7) is provided with a through hole, the inner wall of the through hole is fixedly connected with a fixed cylinder (8).

3. A low pressure casting mold for an aluminum alloy wheel according to claim 2, characterized in that: The surface of the fixed cylinder (8) is provided with a guide groove (9), the surface of the lifting rotary rod (10) is slidingly connected with the inner wall of the fixed cylinder (8), the surface of the lifting rotary rod (10) is fixedly connected with a limiting rod (19), the surface of the limiting rod (19) is slidingly connected with the inner wall of the guide groove (9).

4. The low pressure casting mold for an aluminum alloy wheel hub according to claim 3, characterized by: The top end of the lifting rotary rod (10) is fixedly connected with the lower surface of the lower die platform (11).

5. The low pressure casting mold for an aluminum alloy wheel according to claim 4, characterized by: The lower surface of the lower die platform (11) is fixedly connected with a filling port (12), the surface of the filling port (12) is fixedly installed with a control valve.

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