Automobile hub casting mold

Abstract

The utility model discloses an automobile hub casting die, which belongs to the technical field of hub casting dies and comprises an upper die, the upper die is cylindrical and penetrates through, ejector shafts are coaxially arranged on two sides of the upper die, a cylindrical lower die is arranged below the upper die, a shaft hole for the ejector shafts to penetrate through is arranged on one side, facing the upper die, of the lower die, and when the upper die penetrates through the lower die, the ejector shafts penetrate through the shaft hole, and the ejector shafts penetrate through the shaft hole. One end of a jacking shaft penetrates through the shaft hole, the other end of the jacking shaft is located on the outer side, a U-shaped ring is arranged between the upper die and the jacking shaft, a protrusion is arranged on the side, facing the lower die, of the U-shaped ring, an arc-shaped groove is formed in the side, back to the lower die, of the U-shaped ring, and the shaft hole of the lower die and the jacking shaft of the upper die are coaxial. Due to the fact that the bottom face of the U-shaped ring is matched with the top face of the shaft hole of the lower die, and the arc-shaped groove is formed in the side, back on to the lower die, of the U-shaped ring, internal heat is effectively conducted, and the service life of the die is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub casting molds, and particularly relates to an automobile wheel hub casting mold. Background Technique

[0002] With the increasing popularity of automobiles, China has gradually become the world's automobile production base. As the most important safety component of automobiles, the wheel hub bears the pressure of the automobile and the load quality, is affected by the dynamic torque during vehicle startup and braking, and also bears the irregular alternating forces generated by dynamic loads from different directions such as turning, uneven roads, and road obstacles during the driving process of the automobile.

[0003] In the existing automobile wheel hub casting mold, the original mold has a groove opened around it, resulting in relatively large stress. Due to the high temperature generated during the production process, after long-term thermal expansion and contraction, the edge of the mold groove is prone to cracking, leading to damage to the manufactured automobile wheel hub and affecting the production quality.

[0004] Therefore, we propose an automobile wheel hub casting mold to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem of cracking at the edge of the mold groove in the prior art, and to propose an automobile wheel hub casting mold.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An automobile wheel hub casting mold includes an upper mold. The upper mold is cylindrical, and top shafts are coaxially arranged on both sides of the upper mold through and penetrating it. A cylindrical lower mold is arranged below the upper mold. An axial hole for the top shaft to pass through is opened on one side of the lower mold facing the upper mold. A U-shaped ring is arranged between the upper mold and the top shaft. A protrusion is arranged on the side of the U-shaped ring facing the lower mold, and an arc-shaped groove is arranged on the side facing away from the lower mold. The axial hole of the lower mold is coaxial with the top shaft of the upper mold. A plurality of connecting holes are arranged through the circumference of the upper mold in a circular array. A plurality of connecting rods passing through the connecting holes are arranged in a circular array on the side of the upper mold facing the lower mold. A ball head is fixedly connected to the top of each connecting rod.

[0008] Preferably, a threaded rod screwed into the lower mold is arranged at the lower end of each connecting rod.

[0009] Preferably, a positioning hole is arranged in the lower mold, and a positioning shaft inserted into the positioning hole is fixedly connected to the bottom of the threaded rod.

[0010] Preferably, a concave arc chamfer for the protrusion of the U-shaped ring to pass through is arranged on one side of the axial hole close to the U-shaped ring.

[0011] Preferably, a convex arc chamfer for lifting the protrusion of the U-shaped ring is arranged between the concave arc chamfer and the axial hole.

[0012] Preferably, both ends of the top shaft are arc chamfers.

[0013] In summary, the technical effects and advantages of the present utility model are as follows:

[0014] By providing the upper die, the lower die and the U-shaped ring, the upper die is embedded in the lower die. Since the bottom surface of the U-shaped ring is adapted to the top surface of the shaft hole of the lower die, and since an arc-shaped groove is provided on the side of the U-shaped ring facing away from the lower die, by providing the arc-shaped groove, the heat inside is effectively conducted, realizing an improvement in the service life of the die; by providing the connecting rod, the threaded rod, the positioning hole and the positioning shaft, it is convenient to disassemble and replace the connecting rod. And when replacing, first insert the positioning shaft into the positioning hole, and then rotate the connecting rod to screw the threaded rod into the lower die to achieve rapid replacement and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of an automotive wheel casting die;

[0016] Figure 2 is a schematic connection structural view of an automotive wheel casting die;

[0017] Figure 3 is a sectional view of an automotive wheel casting die;

[0018] Figure 4 is a sectional view of the connection structure of an automotive wheel casting die.

[0019] In the figure: 1, upper die; 2, lower die; 3, top shaft; 4, connecting rod; 5, connection hole; 6, ball head; 7, shaft hole; 8, concave arc chamfer; 9, U-shaped ring; 10, convex arc chamfer; 11, arc-shaped groove; 12, threaded rod; 13, positioning shaft; 14, positioning hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0022] Refer to Figures 1 - 3, An automotive wheel casting mold, including an upper mold 1. The upper mold 1 is cylindrical. Axial shafts 3 are coaxially provided on both sides of the upper mold 1 and penetrate through it. A cylindrical lower mold 2 is provided below the upper mold 1. On one side of the lower mold 2 facing the upper mold 1, an axial hole 7 for the axial shaft 3 to pass through is opened. When the upper mold 1 passes through the lower mold 2 and the axial shaft 3 passes through the axial hole 7, the connection and installation of the upper mold 1 and the lower mold 2 are completed. One end of the axial shaft 3 passes through the axial hole 7, and the other end is located outside. A U-shaped ring 9 is provided between the upper mold 1 and the axial shaft 3. On one side of the U-shaped ring 9 facing the lower mold 2, there is a protrusion, and on the side facing away from the lower mold 2, there is an arc-shaped groove 11. The axial hole 7 of the lower mold 2 is coaxial with the axial shaft 3 of the upper mold 1. A plurality of connection holes 5 are circumferentially and arrayed through the upper mold 1. On one side of the upper mold 1 facing the lower mold 2, a plurality of connecting rods 4 passing through the connection holes 5 are annularly arrayed. When the upper mold 1 is fitted and installed with the lower mold 2, first place the upper mold 1 on the lower mold 2, and then the connecting rods 4 pass through the connection holes 5 to limit the upper mold 1, completing the fitting and installation. At the top of each connecting rod 5, a ball head 6 is fixedly connected. At the top of each connecting rod 4, a ball head 6 is fixedly connected. After the upper mold 1 is installed, it is limited by the ball head 6. By embedding the upper mold 1 into the lower mold 2, since the bottom surface of the U-shaped ring 9 is adapted to the top surface of the axial hole 7 of the lower mold 2, and since an arc-shaped groove 11 is opened on the side of the U-shaped ring 9 facing away from the lower mold 2, by setting the arc-shaped groove 11, the internal heat is effectively conducted, realizing an increase in the service life of the mold.

[0023] Refer to Figure 3 , At the lower end of each connecting rod 4, a threaded rod 12 screwed into the lower mold 2 is provided. The lower mold 2 is provided with a threaded hole. When disassembling the upper mold 1, it is disassembled by rotating the connecting rod 4. The threaded rod 12 at the bottom of the connecting rod 4 is screwed out of the threaded hole of the lower mold 2, and then the upper mold 1 and the lower mold 2 are separated, which is convenient for replacing the upper mold 1 and the lower mold 2 and is also convenient for maintenance.

[0024] Refer to Figures 3 - 4 , A positioning hole 14 is provided in the lower mold 2. The positioning hole 14 communicates with and is coaxial with the threaded hole. A positioning shaft 13 inserted into the positioning hole 14 is fixedly connected to the bottom of the threaded rod 12. When installing the connecting rod 4 on the lower mold 2, first insert the positioning shaft 13 at the bottom of the threaded rod 12 at the lower end of the connecting rod 4 into the positioning hole 14 in the lower mold 2, which is convenient for more accurately and easily installing the threaded rod 12 into the lower mold 2. The length of the positioning shaft 13 is longer than that of the threaded rod 12, and the depth of the positioning hole 14 is longer than the length of the positioning shaft 13.

[0025] Refer to Figures 3 - 4 , On one side of the axial hole 7 close to the U-shaped ring 9, a concave arc chamfer 8 for the protrusion of the U-shaped ring 9 to pass through is provided. After the axial shaft 3 is inserted into the axial hole 7, the protrusion of the U-shaped ring 9 will pass through the inner arc chamfer of the axial hole 7, making it convenient for installation.

[0026] Refer to Figure 4, there is a convex arc chamfer 10 that supports the protrusion of the U-shaped ring 9 between the concave arc chamfer 8 and the shaft hole 7. The protrusion of the U-shaped ring 9 will pass through the shaft hole 7, causing the convex arc chamfer 10 to support the U-shaped ring 9, and there is a gap between the U-shaped ring 9 and the shaft hole 7 to facilitate mold casting.

[0027] Refer to Figures 3 - 4 , both ends of the top shaft 3 are arc chamfers, which facilitates the insertion and installation of the top shaft 3.

[0028] Working principle:

[0029] First, place the lower mold 2 horizontally, then stack the upper mold 1 on the lower mold 2 so that the connection holes 5 of the upper mold 1 are aligned with the threaded holes of the lower mold 2. Then, pass the connecting rod 4 through the connection hole 4 of the upper mold 1. The positioning shaft 13 at the bottom of the connecting rod 4 first passes through the threaded hole and then inserts into the positioning hole 14. Then, gradually screw the threaded rod 12 at the bottom of the connecting rod 4 into the threaded hole of the lower mold 2 to complete the installation of the upper mold 1 and then the lower mold 2. Similarly, when disassembling, rotate the connecting rod 4 to disassemble, screw the threaded rod 12 at the bottom of the connecting rod 4 out of the threaded hole of the lower mold 2, and then separate the upper mold 1 from the lower mold 2, which not only facilitates the replacement of the upper mold 1 and the lower mold 2 but also is convenient for maintenance. And the upper mold 1 is embedded in the lower mold 2. Since the bottom surface of the U-shaped ring 9 is adapted to the top surface of the shaft hole 7 of the lower mold 2, and since an arc-shaped groove 11 is provided on the side of the U-shaped ring 9 facing away from the lower mold 2, by setting the arc-shaped groove 11, the internal heat is effectively conducted, achieving an increase in the service life of the mold.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An automotive wheel casting mold, comprising an upper mold (1), characterized in that, The upper die (1) is cylindrical, and both sides of the upper die (1) are coaxially provided with top shafts (3) through it. A cylindrical lower die (2) is arranged below the upper die (1). An axial hole (7) for the top shaft (3) to pass through is formed on one side of the lower die (2) facing the upper die (1). A U-shaped ring (9) is arranged between the upper die (1) and the top shaft (3). A protrusion is arranged on one side of the U-shaped ring (9) facing the lower die (2), and an arc-shaped groove (11) is arranged on the side facing away from the lower die (2). The axial hole (7) of the lower die (2) is coaxial with the top shaft (3) of the upper die (1). A plurality of connection holes (5) are arranged in a circumferential array through the upper die (1). Connecting rods (4) passing through the connection holes (5) are arranged in a circular array on one side of the upper die (1) facing the lower die (2). A ball head (6) is fixedly connected to the top of each connecting rod (4).

2. The automotive wheel casting mold according to claim 1, characterized in that, A threaded rod (12) screwed into the lower die (2) is arranged at the lower end of each connecting rod (4).

3. A casting mold for an automotive wheel hub according to claim 2, characterized in that, A positioning hole (14) is arranged in the lower die (2). A positioning shaft (13) inserted into the positioning hole (14) is fixedly connected to the bottom of the threaded rod (12).

4. A casting mold for an automobile wheel hub according to claim 1, characterized in that, A concave arc chamfer (8) for the protrusion of the U-shaped ring (9) to pass through is arranged on one side of the axial hole (7) close to the U-shaped ring (9).

5. The automotive wheel casting mold according to claim 4, characterized in that, A convex arc chamfer (10) for supporting the protrusion of the U-shaped ring (9) is arranged between the concave arc chamfer (8) and the axial hole (7).

6. The automotive wheel casting mold according to claim 1, wherein, The two ends of the top shaft (3) are both arc-shaped chamfers.

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