A tooling for irregularly shaped ring forgings for automobile wheel hubs

Abstract

This utility model provides a tooling for irregularly shaped ring forgings for automotive wheel hubs, belonging to the field of automotive wheel hub processing technology. It includes a lower die base and a pressure plate. A lower die is fixedly mounted on the top of the lower die base. An upper die base is connected to the bottom of the pressure plate via a first elastic element. Two upper dies are slidably mounted on the bottom of the upper die base, facing each other and separated from the upper die base by a second elastic element. Two fixing blocks are fixedly mounted on the top of the lower die base, each corresponding to one of the upper dies. Each fixing block is driven and engaged with its corresponding upper die via a first transmission element. Two mating blocks are fixedly mounted on the pressure plate, both corresponding to the fixing blocks in a limited sliding engagement and being driven and engaged with their corresponding upper dies via a second transmission element. In this application, the closing and opening of the two upper dies are completed during the up-and-down movement of the pressure plate, eliminating the need for separate adjustments, making operation more convenient and increasing automation.

Description

Technical Field

[0001] This utility model belongs to the field of automotive wheel hub processing technology, specifically relating to a tooling for an irregularly shaped ring forging for automotive wheel hubs. Background Technology

[0002] Shaped ring forgings have a wide range of applications both domestically and internationally, and are advocated by forging associations in various countries, especially in wind power, construction machinery, port machinery, and automobile tire molds, where they have broad prospects. Shaped rings for automobile wheel hubs are a type of structural component widely used in automobile manufacturing, typically to enhance the strength, aesthetics, or functionality of wheel hubs.

[0003] A patent with publication number CN209753907U discloses a precision forming mold for an outer ring forging of an automobile wheel hub. The mold includes an upper template, a first lower template, a second lower template, an upper cavity, a lower cavity, a connecting block, and a connecting hole. In use, the upper template is mounted on a forging machine via a connecting seat. The forging machine pushes the upper template downwards, aligning the upper and lower cavities to complete the forging. When the automobile wheel hub is difficult to remove, the forging machine moves the upper template upwards, prying open the second lower template and disengaging the connecting hole from the connecting block. Then, the second lower template is moved upwards, separating the first and second lower templates, allowing the automobile wheel hub to be removed.

[0004] However, each demolding operation of the above scheme requires not only controlling the upper mold plate to rise via the forging equipment, but also manually prying the second lower mold plate to separate the first and second lower mold plates for demolding the car wheel hub. Furthermore, the second lower mold plate must be reinstalled into the first lower mold plate before each forging operation to complete the mold closing process. This increases the complexity of the operation, the workload of the workers, the degree of automation, and its practicality. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a tooling for irregularly shaped ring forgings for automobile wheel hubs.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A tooling for an irregularly shaped ring forging for automotive wheel hubs includes a lower die base and a pressure plate. A lower die is fixedly mounted on the top of the lower die base, and an upper die base is connected to the bottom of the pressure plate via a first elastic element. Two upper dies are slidably mounted on the bottom of the upper die base, facing each other and separated from the upper die base by a second elastic element. Two fixing blocks are fixedly mounted on the top of the lower die base, each corresponding to one of the upper dies. Each fixing block is driven and engaged with the corresponding upper die via a first transmission element. Two mating blocks are fixedly mounted on the pressure plate, each corresponding to one of the fixing blocks in a limited sliding engagement, and also driven and engaged with the corresponding upper die via a second transmission element.

[0008] Furthermore, a push rod is provided for limiting and sliding within the lower mold, with a disc integrally formed at the top of the push rod and the bottom of the push rod sliding through the lower mold base; a hydraulic cylinder is fixedly installed at the bottom of the lower mold base, and a slider is provided for limiting and sliding, with the telescopic shaft of the hydraulic cylinder fixedly connected to the slider; a trapezoidal block is fixedly provided on one side of the slider, and the trapezoidal block engages with the push rod in a transmission abutment.

[0009] Furthermore, the first elastic element includes a first spring, and a plurality of sliding rods are fixedly arranged on the top of the upper mold base. The top of each sliding rod slides through the pressure plate and is integrally provided with a limiting block. The outer surface of each sliding rod is fitted with a first spring, one end of which is fixedly connected to the pressure plate and the other end is fixedly connected to the upper mold base.

[0010] Furthermore, the second elastic element includes a connecting plate, the connecting plate is fixedly disposed at the bottom of the upper mold base, and a second spring is fixedly disposed between the connecting plate and the upper mold.

[0011] Furthermore, the first transmission component includes a first inclined surface, each upper mold is provided with a first inclined surface, and each fixed block is provided with a second inclined surface, with the first inclined surface and the second inclined surface corresponding to each other and slidingly engaging.

[0012] Furthermore, a mating groove is provided on the fixing block, and the mating block and the mating groove are corresponding one-to-one for limiting sliding engagement.

[0013] Furthermore, the second transmission component includes a third inclined surface, and each mating block has a third inclined surface at its bottom, with the third inclined surface corresponding to and engaging with the upper mold in a one-to-one transmission fit.

[0014] This application has the following beneficial effects:

[0015] 1. During the process of the external forging equipment pushing the pressure plate downward, the two upper dies located below the upper die holder automatically close and then press down to forge the raw material. Similarly, during the process of the external forging equipment pulling the pressure plate upward, the two upper dies first separate and then rise to facilitate subsequent demolding. Therefore, in this application, the closing and separating of the two upper dies are completed during the up-and-down movement of the pressure plate, without the need for separate adjustments, making the operation more convenient and the degree of automation higher.

[0016] 2. The trapezoidal block can be moved by the hydraulic cylinder, so that the ejector rod pushes the hub of the forging from the middle of the lower mold to rise, thereby better completing the demolding and ensuring the demolding effect of this application, and having better practicality. Attached Figure Description

[0017] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the utility model;

[0020] Figure 3 This is a schematic diagram of the upper mold structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the top structure of the lower mold base of this utility model;

[0022] Figure 5 This is an exploded cross-sectional view of the upper and lower mold bases of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Hydraulic cylinder; 2. Slider; 3. Push rod; 4. Trapezoidal block; 5. Lower mold base; 6. First spring; 7. Upper mold base; 8. Second spring; 9. Slide rod; 10. Pressure plate; 11. Upper mold; 12. Lower mold; 13. Relief groove; 14. Fixing block; 15. First inclined surface; 16. Mating block; 17. Mating groove; 18. Second inclined surface; 19. Connecting plate; 20. Third inclined surface. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] like Figures 1-5 As shown, the technical solution adopted by this utility model is as follows: a tooling for an irregularly shaped ring forging of an automobile wheel hub, including a lower die base 5 and a pressure plate 10. The top of the pressure plate 10 is fixedly connected to an external forging equipment (not shown in the figure), and the lower die base 5 is placed on an external working platform (not shown in the figure). The external forging equipment is used to realize the lifting and lowering of the pressure plate 10, and the external working platform is used to support the whole. Both belong to the prior art, and this solution will not describe them in detail.

[0027] A lower mold 12 is fixedly mounted on the top of the lower mold base 5. A push rod 3 is slidably mounted inside the lower mold 12. A disc is integrally mounted on the top of the push rod 3, and the bottom of the push rod 3 slides through the lower mold base 5. A hydraulic cylinder 1 is fixedly mounted on the bottom of the lower mold base 5, and a slider 2 is slidably mounted thereon. The telescopic shaft of the hydraulic cylinder 1 is fixedly connected to the slider 2. A trapezoidal block 4 is fixedly mounted on one side of the slider 2, and the trapezoidal block 4 engages with the push rod 3 in a transmission contact.

[0028] The bottom of the pressure plate 10 is connected to the upper mold base 7 through the first elastic element. Two upper molds 11 are slidably arranged at the bottom of the upper mold base 7. The two upper molds 11 are arranged facing each other, and each upper mold 11 is provided with a second elastic element between itself and the upper mold base 7.

[0029] The first elastic element includes a first spring 6. Several sliding rods 9 are fixedly installed on the top of the upper mold base 7. The top of each sliding rod 9 slides through the pressure plate 10 and is integrally provided with a limiting block. The outer surface of each sliding rod 9 is fitted with a first spring 6. One end of the first spring 6 is fixedly connected to the bottom of the pressure plate 10, and the other end of the first spring 6 is fixedly connected to the top of the upper mold base 7.

[0030] The second elastic element includes a connecting plate 19. The connecting plate 19 is fixedly installed at the bottom of the upper mold base 7. A second spring 8 is fixedly installed between the connecting plate 19 and the upper mold 11. One end of the second spring 8 is fixedly connected to the connecting plate 19, and the other end is fixedly connected to the upper mold 11.

[0031] Two fixing blocks 14 are fixedly installed on the top of the lower mold base 5. The fixing blocks 14 correspond one-to-one with the upper mold 11. Each fixing block 14 is driven and engaged with the corresponding upper mold 11 through the first transmission component.

[0032] The first transmission component includes a first inclined surface 15. Each upper mold 11 is provided with a first inclined surface 15, and each fixed block 14 is provided with a second inclined surface 18. The first inclined surface 15 and the second inclined surface 18 are in one-to-one sliding fit.

[0033] The pressure plate 10 is pushed by an external forging device, causing the upper die holder 7 to descend under the push of the pressure plate 10 and gravity. This causes the two upper dies 11 to descend and move closer to the lower die 12. During the descent of the upper dies 11, they will come into contact with the fixed block 14. With the sliding engagement of the first inclined surface 15 and the second inclined surface 18, the two upper dies 11 will move closer to each other and stretch the second spring 8. When the first inclined surface 15 on the upper die 11 completely passes the second inclined surface 18 on the fixed block 14, there is still a certain distance between the two upper dies 11, and the molds are not completely closed at this time.

[0034] Furthermore, both the pressure plate 10 and the upper mold base 7 have clearance grooves 13 for the fixing block 14 to pass through.

[0035] A mating block 16 is fixedly installed on the pressure plate 10. The mating block 16 is located in the relief groove 13. The mating block 16 is both in a one-to-one limited sliding fit with the fixed block 14 and in a one-to-one transmission fit with the upper mold 11 through the second transmission component.

[0036] Among them, the fixed block 14 has a mating groove 17, and the mating block 16 and the mating groove 17 are in a one-to-one limited sliding fit.

[0037] The second transmission component includes a third inclined surface 20. Each mating block 16 has a third inclined surface 20 at its bottom, and the third inclined surface 20 is in one-to-one transmission engagement with the upper mold 11.

[0038] Working principle: Initial state as follows Figure 5 As shown, the raw material is placed on top of the lower mold 12 during use.

[0039] The pressure plate 10 is lowered by an external forging device, causing the upper die holder 7 to descend under its own weight and the push of the pressure plate 10. This causes the two upper dies 11 to descend and move closer to the lower die 12. During the descent of the upper dies 11, they come into contact with the fixed block 14. With the sliding engagement of the first inclined surface 15 and the second inclined surface 18, the two upper dies 11 move closer to each other and stretch the second spring 8. When the first inclined surface 15 has completely passed the second inclined surface 18, there is still a distance between the two upper dies 11, and they are not fully closed. Subsequently, the two upper dies 11 continue to descend, and the distance between the two upper dies 11 no longer changes, until the inner cavity of the two upper dies 11 comes into contact with the raw material and stops descending.

[0040] At the same time, as the pressure plate 10 descends, it also drives the mating block 16 to descend synchronously. During the descent, the mating block 16 gradually inserts into the mating groove 17. Since the mating block 16 is initially located above the upper mold 11, and the force required for the first spring 6 to deform is much greater than the force required for the second spring 8 to deform, the mating block 16 and the upper mold 11 descend at the same speed.

[0041] When the two upper molds 11 come into contact with the raw material, the upper molds 11 stop descending, while the pressure plate 10 pushes the mating block 16 to continue descending and compresses the first spring 6. During the descent of the mating block 16, it will come into contact with the upper molds 11, thereby using the third inclined surface 20 to push the two upper molds 11 closer to each other, thus completing the mold closing between the two upper molds 11.

[0042] When the first spring 6 is compressed to its limit and no compression deformation occurs, the pressure plate 10 continues to descend and acts on the upper mold base 7, so that the upper mold 11 after mold closing squeezes the raw material and cooperates with the lower mold 12 to complete the processing.

[0043] When the processing is completed and demolding is required, the pressure plate 10 is pulled up by the external forging equipment. In the initial stage of the pressure plate 10 rising, the upper mold base 7 does not rise, and the first spring 6 gradually recovers its deformation. During this process, the mating block 16 slides up in the mating groove 17 and gradually separates from the upper mold 11. When the mating block 16 separates from the upper mold 11, the two upper molds 11 will separate under the elastic action of the second spring 8, thereby completing the demolding of the wheel hub.

[0044] When the pressure plate 10 contacts the limiting block at the top of the slide bar 9, as the pressure plate 10 continues to rise, the upper mold base 7 will drive the two upper molds 11 to rise, causing the upper molds 11 to completely detach from the wheel hub.

[0045] Subsequently, hydraulic cylinder 1 is activated, and the slider 2 is pulled by the telescopic shaft of hydraulic cylinder 1, thereby pushing the push rod 3 with the help of trapezoidal block 4, and then lifting the processed wheel hub to complete the final demolding.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tooling for an irregularly shaped ring forging for an automobile wheel hub, characterized in that, The device includes a lower mold base (5) and a pressure plate (10). The lower mold base (5) has a lower mold (12) fixedly installed on its top. The pressure plate (10) is connected to an upper mold base (7) via a first elastic element. Two upper molds (11) are slidably installed at the bottom of the upper mold base (7). The two upper molds (11) are arranged facing each other and are connected to the upper mold base (7) via a second elastic element. Two fixing blocks (14) are fixedly installed on the top of the lower mold base (5). The fixing blocks (14) correspond one-to-one with the upper molds (11). Each fixing block (14) is driven and engaged with the corresponding upper mold (11) via a first transmission element. Two mating blocks (16) are fixedly installed on the pressure plate (10). The mating blocks (16) are both slidably engaged with the fixing blocks (14) and driven and engaged with the corresponding upper molds (11) via a second transmission element.

2. The tooling for an irregularly shaped ring forging for an automobile wheel hub according to claim 1, characterized in that, The lower mold (12) is equipped with a sliding ejector rod (3) with a disc integrated on the top of the ejector rod (3) and the bottom of the ejector rod (3) slides through the lower mold base (5); the bottom of the lower mold base (5) is equipped with both a hydraulic cylinder (1) and a sliding block (2) with a limiting sliding position, and the telescopic shaft of the hydraulic cylinder (1) is fixedly connected to the sliding block (2); a trapezoidal block (4) is fixedly installed on one side of the sliding block (2), and the trapezoidal block (4) and the ejector rod (3) are in a transmission abutment cooperation.

3. The tooling for an irregularly shaped ring forging for an automobile wheel hub according to claim 1, characterized in that, The first elastic element includes a first spring (6), and a plurality of slide rods (9) are fixedly arranged on the top of the upper mold base (7). The top of each slide rod (9) slides through the pressure plate (10) and is integrally provided with a limiting block. The outer surface of each slide rod (9) is fitted with a first spring (6). One end of the first spring (6) is fixedly connected to the pressure plate (10), and the other end is fixedly connected to the upper mold base (7).

4. The tooling for an irregularly shaped ring forging for an automobile wheel hub according to claim 1, characterized in that, The second elastic element includes a connecting plate (19), the bottom of the upper mold base (7) is fixedly provided with the connecting plate (19), and a second spring (8) is fixedly provided between the connecting plate (19) and the upper mold (11).

5. The tooling for an irregularly shaped ring forging of an automobile wheel hub according to claim 1, characterized in that, The first transmission component includes a first inclined surface (15), each upper mold (11) is provided with a first inclined surface (15), and each fixed block (14) is provided with a second inclined surface (18). The first inclined surface (15) and the second inclined surface (18) are in one-to-one sliding fit.

6. The tooling for an irregularly shaped ring forging for an automobile wheel hub according to claim 1, characterized in that, The fixed block (14) has a mating groove (17), and the mating block (16) and the mating groove (17) are in a one-to-one limited sliding fit.

7. The tooling for an irregularly shaped ring forging for an automobile wheel hub according to claim 1, characterized in that, The second transmission component includes a third inclined surface (20). Each mating block (16) has a third inclined surface (20) at its bottom. The third inclined surface (20) is in one-to-one transmission engagement with the upper mold (11).

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