Automobile hub forming device

Abstract

The utility model discloses an automobile hub forming device which comprises a box body, a box opening communicated with the interior of the box body is formed in the box body, a box door is installed at the position of the box opening, a rotating chassis, a movable pressing disc, an inner supporting mold and an outer extrusion module structure are installed in the box body, and the rotating chassis is rotatably installed at the bottom of the box body and driven by a rotating driving mechanism to rotate. The movable pressing disc is located over the rotating chassis, a lifting column is connected to the middle of the upper surface of the movable pressing disc and is driven by a lifting driving mechanism to move up and down, the inner supporting mold is installed on the lower surface of the movable pressing disc, and the outer extrusion module structure comprises an outer extrusion mold, an extrusion driving mechanism and an installation column. The automobile hub forming device is different from traditional single-die extrusion forming, the outer die is formed by combining the die units which can be flexibly configured, the forming efficiency and the forming quality of a hub are improved, and the hub machining cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel hub production, and in particular relates to an automobile wheel hub molding device. Background Art

[0002] Automobile wheel hubs are made of various materials and are formed in various ways. Wheel hubs formed by casting are prone to burrs, large internal stresses, and other problems. They require long-term polishing, grinding, multiple annealing and other processing techniques, which result in low production efficiency, and the product quality cannot be guaranteed. There are many problems such as cracking in the later stage. The extrusion molding method can avoid processing steps such as grinding, and the production efficiency can be effectively improved, and the product quality can also be guaranteed. However, the existing extrusion molding equipment generally uses an extrusion mold to directly extrude the wheel hub blank after it is fixed and rotated. Due to the ductility of the material, the molding control accuracy is low in this process, and the molding process needs to be repeated multiple times to obtain a product with a qualified molding effect. In addition, each wheel hub needs to be matched with a special molding mold. Once the mold is fixed, it cannot be adjusted, and the flexibility is poor and the cost is high. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automobile wheel hub forming device, comprising a box body, a box opening connected to the inside of the box body is provided on the box body, a box door is installed at the box opening, a rotating chassis, a movable pressure plate, an inner support mold, and an outer extrusion module structure are installed in the box body, the rotating chassis is rotatably installed at the bottom of the box body, the rotating chassis is driven to rotate by a rotating drive mechanism, the movable pressure plate is located directly above the rotating chassis, a lifting column is rotatably connected to the middle part of the upper surface of the movable pressure plate, the lifting column is driven up and down by the lifting drive mechanism, the inner support mold is detachably installed on the lower surface of the movable pressure plate, the outer extrusion module structure comprises an outer extrusion mold, an extrusion drive mechanism, and a mounting column, the mounting column is arranged on one side of the rotating chassis and fixedly connected to the box body, the extrusion drive mechanism is installed on the mounting column, and the extrusion drive mechanism drives the outer extrusion mold to move along the radial direction of the rotating chassis.

[0004] As a preferred embodiment of the above technical solution, the external extrusion module structures are arranged in pairs, and each pair of external extrusion module structures includes two external extrusion module structures that are arranged opposite to each other.

[0005] As a preferred embodiment of the above technical solution, a vertical slide rail is provided on the mounting column, a slider is installed on the vertical slide rail, the extrusion drive mechanism is installed on the slider, a screw rod is provided on one side of the mounting column, the screw rod is rotatably installed inside the box, a screw rod pair is installed on the screw rod, the slider is fixedly connected to the screw rod pair, and the screw rod is driven to rotate by a screw rod motor.

[0006] As a preferred embodiment of the above technical solution, the external extrusion die is composed of several segment die units spliced ​​in sequence, and several mounting plates are fixedly connected to the slider, the die units correspond to the mounting plates one by one, and each mounting plate is equipped with an extrusion drive mechanism, which is connected to the corresponding die unit.

[0007] As a preferred embodiment of the above technical solution, the extrusion drive mechanism includes a hydraulic cylinder or a pneumatic cylinder.

[0008] As a preferred embodiment of the above technical solution, a lower limit ring groove is provided on the rotating chassis, and the lower limit ring groove is coaxially arranged with the rotating chassis, and an upper limit ring groove is provided on the movable pressure plate, and the upper limit ring groove is coaxially arranged with the movable pressure plate.

[0009] As a preferred embodiment of the above technical solution, a conical positioning groove is provided in the middle of the rotating chassis, and a conical positioning column is connected to the lower end of the inner support mold.

[0010] As a preferred embodiment of the above technical solution, the rotation drive mechanism includes a motor arranged outside the box, and the lifting drive mechanism includes a lifting cylinder.

[0011] The beneficial effects of the utility model are as follows: the automobile wheel hub molding device of the utility model is different from the traditional single-mold extrusion molding, and the outer mold is combined with a mold unit that can be flexibly configured, which improves the molding efficiency and molding quality of the wheel hub and saves the wheel hub processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0014] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] like Figure 1-2 As shown, the automobile wheel hub forming device includes a box body 1, a box opening 2 connected to the inside of the box body 1 is provided on the box body 1, a box door is installed at the box opening 2, a rotating chassis 3, a movable pressure plate 4, an inner support mold 5, and an outer extrusion mold structure are installed in the box body 1, the rotating chassis 3 is rotatably installed at the bottom of the box body 1, the rotating chassis 3 is driven to rotate by a rotating drive mechanism, the movable pressure plate 4 is located directly above the rotating chassis 3, a lifting column 6 is rotatably connected to the middle of the upper surface of the movable pressure plate 4, the lifting column 6 is driven up and down by the lifting drive mechanism, the inner support mold 5 is detachably installed on the lower surface of the movable pressure plate 4, the outer extrusion mold structure includes an outer extrusion mold, an extrusion drive mechanism 14, and a mounting column 7, the mounting column 7 is arranged on one side of the rotating chassis 3 and fixedly connected to the box body 1, the extrusion drive mechanism 14 is installed on the mounting column 7, and the extrusion drive mechanism 14 drives the outer extrusion mold to move along the radial direction of the rotating chassis 3. During the forming process of the hub blank 8, its height will change to a certain extent due to the formation of the annular groove, etc. Therefore, the lifting column 6 can be designed to be composed of an elastically adjustable gas spring, so that the movable pressure plate 4 can form elastic pressure on the hub blank 8, and the hub blank 8 has a certain degree of freedom in the axial direction.

[0018] Furthermore, the external extrusion module structures are arranged in pairs, and each pair of external extrusion module structures includes two external extrusion module structures arranged opposite to each other. The two external extrusion module structures arranged opposite to each other in each pair of external extrusion module structures operate synchronously to improve the force uniformity of the hub blank 8. The external extrusion module structures are preferably two teams, and the external extrusion module structures are respectively arranged at the four corners of the box body to facilitate the loading and unloading of the hub blank 8.

[0019] Furthermore, the mounting column 7 is provided with a vertical slide rail, a slider 9 is installed on the vertical slide rail, the extrusion drive mechanism 14 is installed on the slider 9, a screw rod 10 is provided on one side of the mounting column 7, the screw rod 10 is rotatably installed inside the box 1, a screw rod pair 11 is installed on the screw rod 10, the slider 9 is fixedly connected to the screw rod pair 11, and the screw rod 10 is driven to rotate by the motor of the screw rod 10. The cooperation between the screw rod 10 and the screw rod pair 11 can accurately control the height of the outer extrusion die.

[0020] Furthermore, the external extrusion die is composed of several sections of die units 12 spliced ​​in sequence, and several mounting plates 13 are fixedly connected to the slider 9. The die units 12 correspond to the mounting plates 13 one by one, and each mounting plate 13 is installed with an extrusion drive mechanism 14, and the extrusion drive mechanism 14 is connected to the corresponding die unit 12. The shape of the external extrusion die is determined by the design shape of the hub. There is a certain gap between adjacent die units 12, which is convenient for individually controlling one of the die units 12 to extrude the hub blank 8, so that the die units 12 can be controlled as needed to obtain different molding processes to meet the molding needs of complex structure hubs. The die unit 12 can also be changed, and the individually processed die unit 12 can be dedicated or general.

[0021] Furthermore, the extrusion drive mechanism 14 includes a hydraulic cylinder or a pneumatic cylinder.

[0022] Furthermore, the rotating chassis 3 is provided with a lower limit ring groove 15, which is coaxially arranged with the rotating chassis 3, and the movable pressure plate 4 is provided with an upper limit ring groove 16, which is coaxially arranged with the movable pressure plate 4. The lower limit ring groove 15 and the upper limit ring groove 16 form a positioning for the hub blank 8, and prevent the two ends of the hub blank 8 from transitional displacement in the radial direction during the forming process. The two ends of the hub blank 8 need to be cut and removed after the hub is formed.

[0023] Furthermore, a conical positioning groove 17 is provided in the middle of the rotating chassis 3, and a conical positioning column 18 is connected to the lower end of the inner support mold 5. The cooperation between the conical positioning column 18 and the conical positioning groove 17 facilitates the initial positioning of the hub blank 8.

[0024] Furthermore, the rotation drive mechanism includes a motor arranged outside the box body 1, and the lifting drive mechanism includes a lifting cylinder 19.

[0025] The molding process includes the following steps:

[0026] Step 1: heating the wheel hub blank 8.

[0027] Step 2: transfer the heated wheel hub blank 8 into the box 1, place it on the rotating chassis 3, and close the box door. The molding process is carried out under the high temperature condition of the wheel hub blank 8, and the wheel hub blank 8 has good ductility and good molding effect. The box 1 has a heat preservation effect, and a heating mechanism can also be added to maintain a constant temperature.

[0028] Step three, the lifting drive mechanism drives the lifting column 6 to descend, so that the inner support mold 5 is inserted into the inside of the hub blank 8, and the extrusion drive mechanism 14 drives the outer extrusion mold to move synchronously to position the hub blank 8. Then the outer extrusion mold is reset, and then the lifting drive mechanism drives the lifting column 6 to continue to descend, so that the hub blank 8 is clamped by the rotating chassis 3 and the movable pressure plate 4.

[0029] Step 4: The rotating driving mechanism drives the rotating chassis 3 to rotate, driving the hub blank 8 to rotate, and the extrusion driving mechanism 14 drives the corresponding mold units 12 to move respectively, and the rotating hub blank 8 is extruded and formed. The mold units 12 at the same height in different external extrusion module structures keep moving synchronously. During the extrusion molding process, the screw 10 motor drives the screw 10 to rotate forward or reverse, so that all the mold units 12 in the same group of external extrusion module structures rise or fall synchronously. When a certain part of the hub blank 8 is extruded, all the mold units 12 at the same height act synchronously on the same height position around the hub blank 8, so that the hub blank 8 is evenly stressed during the molding process, and the molding efficiency is higher. During the molding process, the position of the mold unit 12 in the radial direction of the hub blank 8 is adjusted, so that annular grooves with different depths are formed on the hub blank 8 to obtain the required shape of the hub. By adjusting the height position of the mold unit 12 in the axial direction of the hub blank 8, different positions of the hub blank 8 are extruded, and corresponding shapes are formed on the surface of the hub blank 8. The shape of the die unit 12 is matched according to the design requirements of the hub. For example, if a narrow and deep annular groove needs to be formed, the width of the die unit 12 is smaller than the width of the annular groove, so that it can be adjusted according to the axial extension and contraction of the hub blank 8. In the final stage of forming, the die units 12 in the same external extrusion die set structure are extended one by one to trim the formed annular groove to ensure the final forming effect.

[0030] Step 5: After the extrusion molding is completed, the semi-finished wheel hub is obtained, the mold unit 12 is reset, the rotating chassis 3 stops rotating, the movable pressure plate 4 and the inner support mold 5 rise, and the semi-finished wheel hub is taken out.

[0031] Step 6: Use cutting equipment to cut off the two ends of the semi-finished wheel hub to obtain the finished wheel hub. The excess parts at both ends of the semi-finished wheel hub are cut off, and the remaining finished wheel hub is processed in the next step.

[0032] It is worth mentioning that the technical features such as motors, cylinders, hydraulic cylinders, etc. involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0033] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the utility model on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. Automobile wheel hub forming device, characterized in that: The invention comprises a box body, which is provided with a box opening connected to the inside of the box body, a box door is installed at the box opening, a rotating chassis, a movable pressure plate, an inner support mold, and an outer extrusion mold structure are installed in the box body, the rotating chassis is rotatably installed at the bottom of the box body, the rotating chassis is driven to rotate by a rotating drive mechanism, the movable pressure plate is located directly above the rotating chassis, a lifting column is rotatably connected to the middle part of the upper surface of the movable pressure plate, the lifting column is driven to move up and down by the lifting drive mechanism, the inner support mold is detachably installed on the lower surface of the movable pressure plate, the outer extrusion mold structure comprises an outer extrusion mold, an extrusion drive mechanism, and a mounting column, the mounting column is arranged on one side of the rotating chassis and fixedly connected to the box body, the extrusion drive mechanism is mounted on the mounting column, and the extrusion drive mechanism drives the outer extrusion mold to move along the radial direction of the rotating chassis.

2. The automobile wheel hub molding device according to claim 1, characterized in that: The external extrusion module structures are arranged in pairs, and each pair of external extrusion module structures includes two external extrusion module structures arranged opposite to each other.

3. The automobile wheel hub molding device according to claim 2, characterized in that: The mounting column is provided with a vertical slide rail, a slider is installed on the vertical slide rail, the extrusion drive mechanism is installed on the slider, a screw rod is provided on one side of the mounting column, the screw rod is rotatably installed inside the box, a screw rod pair is installed on the screw rod, the slider is fixedly connected to the screw rod pair, and the screw rod is driven to rotate by a screw rod motor.

4. The automobile wheel hub molding device according to claim 3, characterized in that: The external extrusion die is composed of several segment die units spliced ​​in sequence, and several mounting plates are fixedly connected to the slider, and the die units correspond to the mounting plates one by one. Each mounting plate is equipped with an extrusion driving mechanism, and the extrusion driving mechanism is connected to the corresponding die unit.

5. The automobile wheel hub molding device according to claim 4, characterized in that: The extrusion drive mechanism includes a hydraulic cylinder or a pneumatic cylinder.

6. The automobile wheel hub molding device according to claim 1, characterized in that: The rotating chassis is provided with a lower limit ring groove, which is coaxially arranged with the rotating chassis; the movable pressure plate is provided with an upper limit ring groove, which is coaxially arranged with the movable pressure plate.

7. The automobile wheel hub molding device according to claim 6, characterized in that: A conical positioning groove is provided in the middle of the rotating chassis, and a conical positioning column is connected to the lower end of the inner supporting mold.

8. The automobile wheel hub molding device according to claim 1, characterized in that: The rotary drive mechanism includes a motor arranged outside the box, and the lifting drive mechanism includes a lifting cylinder.

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