Hub circle expanding machine

Abstract

The utility model provides a hub circle expanding machine which comprises an upper machine frame and a lower machine frame, a guide rod is arranged between the upper machine frame and the lower machine frame, an upper pressing die is arranged on the guide rod in a sliding mode, a lower die head is arranged on the lower machine frame, and a hydraulic cylinder driving the pressing die to move up and down is arranged on the upper machine frame. The upper pressing die comprises an upper die head and a sliding frame, the upper die head and the lower die head are each provided with a forming inclined face, the two forming inclined faces are matched with a forming inclined face, the pressing die is driven by the hydraulic cylinder to move downwards, the upper die and the lower die are made to get close gradually, and a hub blank is extruded through the forming inclined faces of the upper die head and the lower die head. Therefore, inclined surfaces are formed at the two ends of the hub blank, and subsequent hub semi-finished products can be conveniently formed.

Description

Technical Field

[0001] The utility model relates to wheel hub processing equipment, in particular to a wheel hub expanding machine. Background Art

[0002] The wheel hub is a cylindrical metal part with the inner profile of the tire supporting the tire and the center mounted on the shaft. Usually, when manufacturing the wheel hub, it is first forged and then formed by fine processing. There is an electric vehicle wheel hub, which is formed by bending and welding a plate into a circular blank, and then forming the blank through a mold to form a shape that is thin in the middle and thick at both ends, such as Figure 1 As shown, a hub blank 90, after welding, a welding rod 91 will protrude from the side end of the hub blank 90, and the welding rod 91 can be removed by manual grinding and then placed in a mold for shape forming, such as Figure 2 As shown, a hub semi-finished product 93 is the shape that needs to be obtained after the hub blank 90 is formed by a mold. Inclined surfaces 94 are arranged on the outer sides of both ends. The mold needs to fix and clamp the two ends of the blank when forming the side wall surface of the blank, so the forming of the inclined surface 94 is relatively difficult. Utility Model Content

[0003] In view of this, the utility model aims to provide a wheel hub expanding machine, which has the function of processing the inclined surfaces at both ends of the wheel hub blank.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a wheel hub expanding machine, comprising an upper frame and a lower frame, a guide rod is arranged between the upper frame and the lower frame, an upper die is slidably arranged on the guide rod, a lower die head is arranged on the lower frame, a hydraulic cylinder for driving the die to move up and down is arranged on the upper frame, the upper die comprises an upper die head and a sliding frame, both the upper die head and the lower die head are provided with forming inclined surfaces, and the two forming inclined surfaces cooperate with the forming inclined surface.

[0005] Through the above technical means, the hydraulic cylinder drives the die to move downward, so that the upper die and the lower die gradually approach each other, and the wheel hub blank is extruded through the forming inclined surfaces of the upper die head and the lower die head, so that inclined surfaces are formed at both ends of the wheel hub blank, which facilitates the subsequent molding of the wheel hub semi-finished product.

[0006] Preferably, the upper die head is detachably connected to the sliding frame, and the lower die head is detachably connected to the lower frame.

[0007] Through the above technical means, the upper die head, the lower die head and the sliding frame and the lower frame can be disassembled and replaced, so that the equipment can adapt to wheel hub blanks of different sizes.

[0008] Preferably, the lower die head includes a base die and a push die, a sliding hole is opened in the base die, the push die is slidably arranged in the sliding hole, a driving source is also arranged inside the base die, the driving source drives the push die to be exposed or retracted into the base die, and the end face of the push die and the side face of the end die form a molding slope.

[0009] Through the above technical means, the push die is slidably arranged in the sliding hole, so that when the wheel hub blank is installed, the bottom surface of the blank can be aligned with the extended upper end surface of the push die, so that the wheel hub blank can be placed stably, preventing the wheel hub blank from skewed transition and causing defective products, thereby increasing the yield rate.

[0010] Preferably, the driving source comprises an inclined pull block and an oil cylinder, a T-shaped inclined block is arranged on the side of the inclined pull block, a T-shaped inclined groove is arranged at the tail of the push die, and when the oil cylinder pulls the inclined pull block to move, it drives the push die to move.

[0011] Through the above technical means, the movement of the push block driven by the oil cylinder is realized through the cooperation of the T-shaped inclined hole and the T-shaped inclined groove, thereby increasing the movement stability of the push block.

[0012] Preferably, a cutting groove is provided inside the push die, and the cutting groove is used for cutting welding rods, and a blanking hole is provided inside the lower frame.

[0013] Through the above technical means, by opening the cutting groove, the welding rod does not need to be manually polished and stripped, thus reducing labor costs. The welding rod is directly pulled off by the oil cylinder and discharged through the blanking hole, thereby improving the degree of automation of the equipment.

[0014] Preferably, a material guide hopper is further provided at the bottom of the drop hole, a material receiving rack is further provided at the bottom of the frame, and a material receiving box is detachably provided in the material receiving rack.

[0015] Through the above technical means, the welding rod is guided to slide toward the receiving box through the guide hopper, and the receiving box is detachably connected to the receiving rack, so that the full receiving box can be easily replaced, making the recycling of the welding rod more convenient.

[0016] Preferably, the sliding frame and the lower frame are respectively provided with a guide forming ring 1 and a guide forming ring 2, the guide forming ring 1 is arranged on the outer side of the upper die head and forms an upper forming cavity with the upper die head, and the guide forming ring 2 is arranged on the outer side of the lower die head and forms a lower forming cavity with the lower die head.

[0017] Through the above technical means, the upper molding cavity and the lower molding cavity are formed by the guide molding ring 1 and the guide molding ring 2, so as to shape the inclined surface and prevent other deformation of the inclined surface.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the push die is driven out by the oil cylinder, so that when the wheel hub blank is placed, the wheel hub blank can be placed more upright between the upper die head and the lower die head, thereby reducing the problem of extrusion deviation caused by operator error, and the welding rod is pulled apart by cutting the groove, eliminating the steps of grinding and breaking the welding rod in the process, thereby reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the wheel hub blank;

[0020] Figure 2 It is a schematic diagram of the structure of a semi-finished wheel hub;

[0021] Figure 3 It is a structural schematic diagram of an embodiment;

[0022] Figure 4 is a cross-sectional schematic diagram of an embodiment;

[0023] Figure 5 It is a partial cross-sectional view of an embodiment.

[0024] 1. The drawing marks are as follows: 1. upper frame; 2. lower frame; 3. guide rod; 4. upper die; 5. lower die head; 6. hydraulic cylinder; 7. upper die head; 8. sliding frame; 9. forming inclined surface; 10. base mold; 11. push mold; 12. sliding hole; 13. driving source; 14. inclined pull block; 15. oil cylinder; 16. T-type inclined block; 17. T-type inclined groove; 18. cutting groove; 19. material guide hopper; 20. receiving frame; 21. receiving box; 22. guide forming ring one; 23. guide forming ring two; 24. upper forming cavity; 25. lower forming cavity; 26. blanking hole; 90. wheel hub blank; 91. welding rod; 92. welding seam; 93. wheel hub semi-finished product; 94. inclined surface. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0026] A wheel hub expanding machine comprises an upper frame 1 and a lower frame 2, a guide rod 3 is arranged between the upper frame 1 and the lower frame 2, an upper die 4 is slidably arranged on the guide rod 3, a lower die head 5 is arranged on the lower frame 2, the lower die head 5 is fixed to the lower frame 2 by screws, a hydraulic cylinder 6 for driving the die to move up and down is arranged on the upper frame 1, the upper die 4 is fixedly arranged on the output shaft of the hydraulic cylinder 6, the upper die 4 comprises an upper die head 7 and a sliding frame 8, the upper die head 7 is fixed to the sliding frame 8 by screws, the sliding frame 8 is slidably matched with the guide rod 3, a forming inclined surface 9 is arranged on the upper die head 7 and the lower die head 5, the two forming inclined surfaces 9 cooperate with the forming inclined surface 94, a wheel hub blank 90 is placed between the two forming inclined surfaces 9, and the inclined surface 94 is formed by extrusion, and when it is necessary to process wheel hub blanks 90 of different sizes, the upper die head 7 and the lower die head 5 can be replaced by disassembling.

[0027] The lower die head 5 includes a base die 10 and a pair of push dies 11. A pair of sliding holes 12 are opened in the base die 10. The push dies 11 are slidably set in the sliding holes 12. A driving source 13 is also arranged inside the base die 10. The driving source 13 drives the push dies 11 to be exposed or retracted into the base die 10. When the push die 11 is retracted into the sliding hole 12, the end face of the push die 11 and the side face of the end die form a molding slope 9. When the push die 11 is exposed from the sliding hole 12, the upper end face of the push die 11 forms a reference surface for placing the wheel hub blank 90, so that the wheel hub blank 90 can be placed stably, preventing the wheel hub blank 90 from being skewed and transitioned to cause defective products, thereby increasing the yield rate.

[0028] The driving source 13 includes an inclined pull block 14 and an oil cylinder 15. A T-shaped inclined block 16 is provided on the side of the inclined pull block 14. A T-shaped inclined groove 17 is provided at the tail of the push die 11. The T-shaped inclined block 16 is inserted into the T-shaped inclined groove 17. When the oil cylinder 15 pulls the inclined pull block 14 to move, the push die 11 is driven to move. A cutting groove 18 is also provided inside the push die 11. The cutting groove 18 is used to cut the welding rod 91. A blanking hole 26 is also provided in the lower frame 2. When installing the hub blank 90, the welding rod 91 is inserted into the cutting groove 18. 8, and at the same time plays a role of auxiliary positioning. The oil cylinder 15 pulls the push die 11 to move while cutting off the welding rod 91, and makes the welding rod 91 fall into the blanking hole 26, so that the welding rod 91 does not need to be manually polished and stripped, reducing labor costs. A guide hopper 19 is also provided at the bottom of the blanking hole 26, and a receiving rack 20 is also provided at the bottom of the frame. A receiving box 21 is detachably provided in the receiving rack 20. The welding rod 91 falls from the blanking hole 26 into the guide hopper 19 and slides into the receiving box 21.

[0029] A guide forming ring 1 22 and a guide forming ring 23 are respectively provided on the sliding frame 8 and the lower frame 2. The guide forming ring 1 22 is arranged on the outer side of the upper die head 7 and forms an upper forming cavity 24 with the upper die head 7. The guide forming ring 23 is arranged on the outer side of the lower die head 5 and forms a lower forming cavity 25 with the lower die head 5, thereby shaping the inclined surface 94 to prevent other deformations of the inclined surface 94.

[0030] The use process of the above-mentioned wheel hub expanding machine is as follows: first, the upper die head 7 is lifted by the hydraulic cylinder 6 to leave space for the wheel hub blank 90, and then the wheel hub blank 90 is placed between the upper die head 7 and the lower die head 5, and the welding rod 91 is inserted into the cutting groove 18. At this time, the equipment is started, and the push die 11 is first retracted into the base die 10. During the retraction of the push die 11, the cutting groove 18 cuts off the welding rod 91. When the demolding and recovery is completed, the hydraulic cylinder 6 drives the upper die head 7 to press down and shape the wheel hub blank 90, so that its edge forms an inclined surface 94.

[0031] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A wheel hub expanding machine, comprising an upper frame (1) and a lower frame (2), wherein a guide rod (3) is arranged between the upper frame (1) and the lower frame (2), wherein: An upper die (4) is slidably arranged on the guide rod (3), a lower die head (5) is arranged on the lower frame (2), a hydraulic cylinder (6) for driving the die to move up and down is arranged on the upper frame (1), the upper die (4) comprises an upper die head (7) and a sliding frame (8), and both the upper die head (7) and the lower die head (5) are provided with a forming inclined surface (9), and the two forming inclined surfaces (9) cooperate with a forming inclined surface (94).

2. A wheel hub expanding machine according to claim 1, characterized in that: The upper die head (7) is detachably connected to the sliding frame (8), and the lower die head (5) is detachably connected to the lower frame (2).

3. A wheel hub expanding machine according to claim 1, characterized in that: The lower die head (5) comprises a base die (10) and a push die (11); a sliding hole (12) is provided in the base die (10); the push die (11) is slidably arranged in the sliding hole (12); a driving source (13) is also provided inside the base die (10); the driving source (13) drives the push die (11) to be exposed from or retracted into the base die (10); and the end face of the push die (11) and the side face of the end die form a molding inclined surface (9).

4. A wheel hub expanding machine according to claim 3, characterized in that: The driving source (13) comprises an inclined pull block (14) and an oil cylinder (15); a T-shaped inclined block (16) is arranged on the side of the inclined pull block (14); a T-shaped inclined groove (17) is arranged at the tail of the push die (11); when the oil cylinder (15) pulls the inclined pull block (14) to move, it drives the push die (11) to move.

5. The wheel hub expanding machine according to claim 3, characterized in that: The push die (11) is also provided with a cutting groove (18) inside, and the cutting groove (18) is used to cut the welding rod (91). The lower frame (2) is also provided with a blanking hole (26).

6. A wheel hub expanding machine according to claim 5, characterized in that: A material guide hopper (19) is also provided at the bottom of the material drop hole (26), and a material receiving rack (20) is also provided at the bottom of the frame. A material receiving box (21) is detachably provided in the material receiving rack (20).

7. The wheel hub expanding machine according to claim 1, characterized in that: The sliding frame (8) and the lower frame (2) are respectively provided with a guide forming ring 1 (22) and a guide forming ring 2 (23); the guide forming ring 1 (22) is arranged on the outer side of the upper die head (7) and forms an upper forming cavity (24) with the upper die head (7); the guide forming ring 2 is arranged on the outer side of the lower die head (5) and forms a lower forming cavity (25) with the lower die head (5).

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