Forged passenger car aluminum wheel forming device and forming method thereof

Abstract

The invention discloses a passenger car aluminum wheel forging forming device and a forming method thereof, and relates to the technical field of wheel forming machining equipment.The passenger car aluminum wheel forging forming device comprises a pre-forging mechanism, a finish-forging mechanism and a spinning machine body, and feeding mechanisms are arranged on the side faces of the pre-forging mechanism, the finish-forging mechanism and the spinning machine body. According to the aluminum column pre-forging device, the feeding mechanism is used for feeding a heated aluminum column into the pre-forging mechanism, the first forging press body drives the pre-forging upper die to conduct primary pre-forging machining on the aluminum column, and the feeding mechanism is used for feeding the pre-forged aluminum column into the finish-forging mechanism; a second forging press main body drives a finish forging upper die to conduct finish forging machining on an aluminum column, then the aluminum column subjected to finish forging is fed into a feeding mechanism through a feeding mechanism to be subjected to spinning forming machining, the aluminum column subjected to finish forging is machined into a wheel, the aluminum column is subjected to two times of forging machining including pre-forging and finish forging, and therefore the aluminum column can be forged and deformed in a graded mode; and overlarge deformation and overlarge bearing pressure during one-time forming are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wheel forming processing equipment, in particular to a forged passenger car aluminum wheel forming device and a forming method thereof. Background Art

[0002] Forged wheels are hubs manufactured by forging. This manufacturing method can remove internal pores and cracks to the greatest extent. It usually adopts multiple forging processes to ensure that all aspects of material defects are removed, increase material internal stress, and improve toughness, thereby greatly improving impact resistance and tear resistance at high speeds. Forged wheels require forging equipment during the forging process. Forging equipment uses specific process flows and technical means to forge aluminum alloy materials into the shape of wheels. Forging equipment usually includes key components such as forging dies, heating systems, presses, and control systems to ensure the molding quality and production efficiency of aluminum wheels.

[0003] For example, publication number: CN118080757B discloses "a forging device and forming method for an aluminum alloy wheel", which includes a sealing mechanism, a heating mechanism and a connecting mechanism; the sealing mechanism is movably arranged on a frame and is used to seal an upper mold and a lower mold, and the sealing mechanism can be lifted and lowered in a vertical direction; the heating mechanism is movably arranged on the upper mold and is used to heat an aluminum alloy column; the connecting mechanism includes an elastic support member and a connecting assembly, the two ends of the elastic support member are respectively connected to the upper mold and the heating mechanism, and the connecting assembly is used to connect the sealing mechanism and the heating mechanism; in a working state, the heating mechanism can be lifted and lowered synchronously with the sealing mechanism under the connecting action of the connecting assembly, and the heating mechanism can be completely recovered into the upper mold through lifting and lowering.

[0004] However, in the prior art, when forging aluminum wheels, a one-time forging forming processing method is adopted. Such a processing method will cause excessive pressure on the aluminum column, and the stress inside the wheel cannot be gradually released, resulting in excessive stress inside the wheel. At the same time, micro cracks are likely to appear inside the wheel, resulting in unqualified wheel quality and waste of materials. In the prior art, during the forging of the aluminum column, the aluminum column is first heated by a heating device, and then loaded into the forging die by a robotic arm for forging. After the aluminum column is placed on the upper part of the die, the aluminum column is continuously heated by a heating mechanism. However, the existing heating mechanism heats the aluminum column from the bottom installed on the lower die. In the actual production process, since the upper part of the aluminum column needs to be exposed, the heat dissipation of the upper part of the aluminum column is faster. Heating the aluminum column from the bottom will cause a temperature difference between the upper and bottom parts of the aluminum column. During forging, it is easy for the metal deformation ability of the upper part of the aluminum column to be weaker than that of the lower part, resulting in unstable quality of the forged wheel hub. Summary of the invention

[0005] The object of the present invention is to provide a forged passenger car aluminum wheel forming device and a forming method thereof, so as to solve the problem that in the prior art proposed by the above background technology, when forging the aluminum wheel, a one-time forging forming processing method is adopted. Such a processing method will cause excessive pressure on the aluminum column, and the stress inside the wheel cannot be gradually released, resulting in excessive stress inside the wheel. At the same time, micro cracks are likely to appear inside the wheel, resulting in unqualified wheel quality and waste of materials. In the prior art, a heating mechanism heats the aluminum column from the bottom installed on the lower mold. In the actual production process, since the upper part of the aluminum column needs to be exposed, the upper part of the aluminum column dissipates heat faster. Heating the aluminum column from the bottom will cause a temperature difference between the upper and bottom parts of the aluminum column. During forging, it is easy for the metal deformation ability of the upper part of the aluminum column to be weaker than that of the lower part, resulting in the problem of unstable quality of the forged wheel hub.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a forged passenger car aluminum wheel forming device, comprising a pre-forging mechanism, a final forging mechanism and a spinning machine body, wherein the pre-forging mechanism, the final forging mechanism and the side of the spinning machine body are all provided with a feeding mechanism, the pre-forging mechanism is used to pre-forge an aluminum column, the final forging mechanism is used to perform final forging processing on the aluminum column after pre-forging, the spinning machine body is used to spin the aluminum column after final forging to complete wheel processing, the feeding mechanism is used to load and unload the aluminum column during the processing, the pre-forging mechanism and the final forging mechanism are both fixedly connected with a heating mechanism, and the pre-forging mechanism and the final forging mechanism are installed with a temperature sensor, the temperature sensor is used to monitor the temperature of the aluminum column, and the heating mechanism is used to heat the aluminum column during the processing.

[0007] In the present invention, a feeding mechanism is used to feed the heated aluminum column into the pre-forging mechanism, and the No. 1 forging press body drives the pre-forging upper die to perform a pre-forging process on the aluminum column. The pre-forged aluminum column is fed into the final forging mechanism by the feeding mechanism, and the No. 2 forging press body drives the final forging upper die to perform final forging on the aluminum column. The final forging aluminum column is then fed into the spinning machine body by the feeding mechanism for spinning forming. The final forged aluminum column is processed into a wheel. By performing the pre-forging and final forging processes on the aluminum column, the aluminum column can be deformed by graded forging, avoiding excessive deformation and excessive pressure in one forming process, thereby improving the stability of the aluminum column during the forging process, and the stress inside the aluminum column is fully released by the two forging processes, thereby improving the stability of the forged wheel.

[0008] Preferably, the pre-forging mechanism comprises a No. 1 support frame, the upper portion of which is fixedly connected to a No. 1 forging press body, a pre-forging upper die and a pre-forging lower die are respectively installed inside the No. 1 forging press body, and the pre-forging upper die is located above the pre-forging lower die.

[0009] Preferably, the final forging mechanism includes a No. 2 support frame, the upper part of which is fixedly connected to a No. 2 forging press body, and a final forging upper die and a final forging lower die are respectively installed inside the No. 2 forging press body, and the final forging upper die is located above the final forging lower die.

[0010] Preferably, the feeding mechanism comprises a mechanical arm, a clamping jaw driving assembly is installed at the end of the mechanical arm, and a driving end of the clamping jaw driving assembly is movably connected to a movable clamping jaw.

[0011] Preferably, the front end of the mechanical arm is fixedly connected to a limiting track, and the movable clamp is slidably connected to the limiting track.

[0012] Preferably, a connecting plate is fixedly connected to the side surface of the movable clamping jaw, a limiting rod is inserted into the surface of the connecting plate, and one end of the limiting rod is fixedly connected to the clamping plate.

[0013] Preferably, an anti-slip layer is fixedly connected to the side surface of the clamping plate, a spring is arranged on the surface of the limiting rod, one end of the spring is fixedly connected to the clamping plate, and the other end of the spring is fixedly connected to the connecting plate.

[0014] Preferably, the heating mechanism comprises a fixed rod, an annular slide rail is fixedly connected to the upper portion of the fixed rod, an annular slider is slidably connected to the inside of the annular slide rail, a flame nozzle is installed on the side of the annular slider, and the flame nozzle is externally connected to a gas supply device and an ignition device.

[0015] Preferably, the heating mechanism comprises a servo motor, a driving wheel is fixedly connected to the upper portion of the servo motor, a through groove is provided on the side of the annular slide rail, and the side of the driving wheel is located inside the through groove and fits with the side of the annular slide block.

[0016] A forming method for a forged passenger car aluminum wheel forming device comprises the following steps: S1. Raw material preparation: cutting out aluminum columns of set size and heating them with heating equipment to 350℃-450℃; S2, using the feeding mechanism to feed the heated aluminum column into the pre-forging mechanism, and driving the pre-forging upper die through the No. 1 forging press body to perform a pre-forging process on the aluminum column; S3, loading the pre-forged aluminum column into the final forging mechanism through the loading mechanism, and driving the final forging upper die through the No. 2 forging press body to perform final forging on the aluminum column; S4, the feeding mechanism feeds the aluminum column after the final forging into the main body of the spinning machine for spinning forming, and the aluminum column after the final forging is processed into a wheel; S5. Punch, polish and heat treat the formed wheels.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a feeding mechanism is used to feed the heated aluminum column into the pre-forging mechanism, and the No. 1 forging press body drives the pre-forging upper die to perform a pre-forging process on the aluminum column. The pre-forged aluminum column is fed into the final forging mechanism by the feeding mechanism, and the No. 2 forging press body drives the final forging upper die to perform final forging on the aluminum column. The final forging aluminum column is then fed into the spinning machine body by the feeding mechanism for spinning forming, and the final forged aluminum column is processed into a wheel. By performing the pre-forging and final forging processes on the aluminum column twice, the aluminum column can be deformed by graded forging, avoiding excessive deformation and excessive pressure in one forming process, improving the stability of the aluminum column during the forging process, and fully releasing the stress inside the aluminum column through two forging processes, thereby improving the stability of the forged wheel. 2. In the present invention, the aluminum column is placed inside the pre-forging lower die and waits for the pre-forging upper die to forge. The temperature of the aluminum column is monitored by a temperature sensor. When the temperature of the aluminum column is too low, the flame nozzle is ignited by an ignition device, and the flame nozzle is supplied with gas by a gas supply device. The middle of the aluminum ingot is heated by the flame nozzle, so that the temperature of the aluminum column is evenly increased to avoid inconsistent temperature inside the aluminum column. 3. In the present invention, during the process of the flame nozzle heating the aluminum column, the driving wheel is driven to rotate by the servo motor, and then the driving wheel drives the annular slider to rotate, and then drives the annular slider and the flame nozzle to rotate, so that the flame nozzle can fully heat the aluminum column; similarly, when the pre-forged aluminum column is placed on the final forging lower die, the heating mechanism can fully heat the aluminum column, so that the aluminum column is always kept at a suitable temperature for forging processing, thereby improving the quality of wheel forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first three-dimensional structural schematic diagram of a forged passenger car aluminum wheel forming device of the present invention; Figure 2 It is a second three-dimensional structural schematic diagram of a forged passenger car aluminum wheel forming device of the present invention; Figure 3 It is a schematic diagram of the top view of a forged passenger car aluminum wheel forming device of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of a pre-forging mechanism in a forged passenger car aluminum wheel forming device of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of a heating mechanism in a forged passenger car aluminum wheel forming device of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of a feeding mechanism in a forged passenger car aluminum wheel forming device of the present invention; Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of an annular slide rail in a forged passenger car aluminum wheel forming device of the present invention; Figure 8 The present invention is a working flow chart of a forged passenger car aluminum wheel forming device.

[0019] In the figure: 1. pre-forging mechanism; 11. No. 1 support frame; 12. No. 1 forging machine body; 13. pre-forging upper die; 14. pre-forging lower die; 2. final forging mechanism; 21. No. 2 support frame; 22. No. 2 forging machine body; 23. final forging upper die; 24. final forging lower die; 3. spinning machine body; 4. feeding mechanism; 41. mechanical arm; 42. clamping jaw drive assembly; 43. limit rail; 44. moving clamping jaw; 45. connecting plate; 46. limit rod; 47. clamping plate; 48. spring; 49. anti-skid layer; 5. heating mechanism; 51. servo motor; 52. driving wheel; 53. fixing rod; 54. annular slide rail; 55. annular slider; 56. flame nozzle; 6. temperature sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Reference Figure 1 - Figure 8 As shown: a forged passenger car aluminum wheel forming device, including a pre-forging mechanism 1, a final forging mechanism 2 and a spinning machine body 3, the pre-forging mechanism 1, the final forging mechanism 2 and the spinning machine body 3 are all provided with a feeding mechanism 4 on the side, the pre-forging mechanism 1 is used to pre-forge the aluminum column, the final forging mechanism 2 is used to perform final forging processing on the aluminum column after pre-forging, the spinning machine body 3 is used to perform spinning processing on the aluminum column after final forging to complete the wheel processing, the feeding mechanism 4 is used to load and unload the aluminum column during the processing process, the pre-forging mechanism 1 and the final forging mechanism 2 are both fixedly connected with a heating mechanism 5, and the pre-forging mechanism 1 and the final forging mechanism 2 are installed with a temperature sensor 6. The temperature sensor 6 is used to monitor the temperature of the aluminum column. The heating mechanism 5 is used to heat the aluminum column during the processing. The pre-forging mechanism 1 includes a No. 1 support frame 11. The No. 1 support frame 11 is fixedly connected to the upper part of the No. 1 forging press body 12. The No. 1 forging press body 12 is respectively installed with a pre-forging upper die 13 and a pre-forging lower die 14. The pre-forging upper die 13 is located above the pre-forging lower die 14. The final forging mechanism 2 includes a No. 2 support frame 21. The No. 2 support frame 21 is fixedly connected to the upper part of the No. 2 forging press body 22. The No. 2 forging press body 22 is respectively installed with a final forging upper die 23 and a final forging lower die 24. The final forging upper die 23 is located above the final forging lower die 24.

[0022] In this embodiment, a feeding mechanism 4 is used to feed the heated aluminum column into the pre-forging mechanism 1, and the pre-forging upper die 13 is driven by the No. 1 forging press body 12 to perform a pre-forging process on the aluminum column. The pre-forged aluminum column is fed into the final forging mechanism 2 by the feeding mechanism 4, and the final forging upper die 23 is driven by the No. 2 forging press body 22 to perform a final forging process on the aluminum column. The final forging aluminum column is then fed into the spinning machine body 3 by the feeding mechanism 4 for spinning forming. The final forged aluminum column is processed into a wheel. By performing the pre-forging and final forging processes on the aluminum column, the aluminum column can be deformed by graded forging to avoid excessive deformation and excessive pressure in one forming process, thereby improving the stability of the aluminum column during the forging process. The stress inside the aluminum column is fully released by the two forging processes, thereby improving the stability of the forged wheel.

[0023] Embodiment 2: According to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the feeding mechanism 4 includes a mechanical arm 41, a clamping jaw driving assembly 42 is installed at the end of the mechanical arm 41, and a mobile clamping jaw 44 is movably connected to the driving end of the clamping jaw driving assembly 42. The front end of the mechanical arm 41 is fixedly connected to a limiting track 43, and the mobile clamping jaw 44 is slidably connected to the limiting track 43. The side of the mobile clamping jaw 44 is fixedly connected to a connecting plate 45, and a limiting rod 46 is inserted on the surface of the connecting plate 45. One end of the limiting rod 46 is fixedly connected to a clamping plate 47, and the side of the clamping plate 47 is fixedly connected to an anti-slip layer 49. A spring 48 is arranged on the surface of the limiting rod 46, and one end of the spring 48 is connected to the clamping jaw 48. The plate 47 is fixedly connected, and the other end of the spring 48 is fixedly connected to the connecting plate 45. The heating mechanism 5 includes a fixed rod 53, and an annular slide rail 54 is fixedly connected to the upper part of the fixed rod 53. An annular slider 55 is slidably connected inside the annular slide rail 54. A flame nozzle 56 is installed on the side of the annular slider 55. The flame nozzle 56 is externally connected to an air supply device and an ignition device. The heating mechanism 5 includes a servo motor 51, and a driving wheel 52 is fixedly connected to the upper part of the servo motor 51. A through groove is provided on the side of the annular slide rail 54. The side of the driving wheel 52 is located inside the through groove and fits with the side of the annular slider 55.

[0024] In this embodiment, the feeding mechanism 4 is used to feed the heated aluminum column into the pre-forging mechanism 1. When the feeding mechanism 4 feeds the aluminum column, the two mobile clamps 44 are driven to approach each other by the clamp driving assembly 42, and the clamp plate 47 is driven to clamp and fix the aluminum column. In the process of the clamp plate 47 clamping and fixing the aluminum column, the anti-slip layer 49 is used to increase the friction force for fixing the aluminum column, thereby improving the stability of fixing the aluminum column. In the process of moving the mobile clamp 44, the limit track 43 is used to limit it, thereby improving the stability of the movement of the mobile clamp 44, and further improving the stability of the movement of the aluminum ingot. The heated aluminum column is loaded into the pre-forging mechanism 1 by using the loading mechanism 4. The aluminum column is placed in the pre-forging lower die 14 and waits for the pre-forging upper die 13 to forge. The temperature of the aluminum column is monitored by the temperature sensor 6. When the temperature of the aluminum column is too low, the flame nozzle 56 is ignited by the ignition device, and the flame nozzle 56 is supplied with gas by the gas supply device. The middle part of the aluminum ingot is heated by the flame nozzle 56, so that the temperature of the aluminum column is evenly increased to avoid inconsistent temperature inside the aluminum column. When the flame nozzle 56 heats the aluminum column, the servo motor 51 drives the driving wheel 52 to rotate, and the driving wheel 52 drives the annular slider 55 to rotate, and then drives the annular slider 55 and the flame nozzle 56 to rotate, so that the flame nozzle 56 can fully heat the aluminum column; similarly, when the pre-forged aluminum column is placed on the final forging lower die 24, the heating mechanism 5 can fully heat the aluminum column, so that the aluminum column is always kept at a suitable temperature for forging, thereby improving the quality of wheel forming; The feeding mechanism 4 then feeds the aluminum column that has been final forged into the interior of the feeding mechanism 4 for spin forming, and processes the aluminum column that has been final forged into a wheel. Finally, the formed wheel is punched, polished and heat treated.

[0025] Embodiment 3: A forming method of a forged passenger car aluminum wheel forming device, comprising the following steps: Step 1: Raw material preparation: Cut out aluminum columns of set size and heat them with heating equipment to 350℃-450℃; Step 2: Use the feeding mechanism 4 to feed the heated aluminum column into the pre-forging mechanism 1, and drive the pre-forging upper die 13 through the No. 1 forging press body 12 to perform a pre-forging process on the aluminum column; Step 3: The pre-forged aluminum column is loaded into the final forging mechanism 2 through the loading mechanism 4, and the final forging upper die 23 is driven by the second forging press body 22 to perform final forging on the aluminum column; Step 4: The feeding mechanism 4 feeds the aluminum column after the final forging into the interior of the spinning machine body 3 for spinning forming, and the aluminum column after the final forging is processed into a wheel; Step 5: Punch, polish and heat treat the formed wheels.

[0026] The working principle and use method of the device are as follows: the feeding mechanism 4 is used to feed the heated aluminum column into the pre-forging mechanism 1. When the feeding mechanism 4 feeds the aluminum column, the two moving clamps 44 are driven to approach each other by the clamp driving assembly 42, and the clamping plate 47 is driven to clamp and fix the aluminum column. During the movement of the moving clamp 44, the position is limited by the limiting track 43. The heated aluminum column is loaded into the pre-forging mechanism 1 by the loading mechanism 4. The aluminum column is placed in the pre-forging lower die 14 and waits for the pre-forging upper die 13 to forge. The temperature of the aluminum column is monitored by the temperature sensor 6. When the temperature of the aluminum column is too low, the flame nozzle 56 is ignited by the ignition device, and the flame nozzle 56 is supplied with gas by the gas supply device, so that the middle part of the aluminum ingot is heated by the flame nozzle 56. When the flame spray head 56 heats the aluminum column, the servo motor 51 drives the driving wheel 52 to rotate, and the driving wheel 52 drives the annular slider 55 to rotate, and then drives the annular slider 55 and the flame spray head 56 to rotate, so that the flame spray head 56 can fully heat the aluminum column. Similarly, when the pre-forged aluminum column is placed on the final forging lower die 24, the heating mechanism 5 can fully heat the aluminum column, so that the aluminum column is always kept at a suitable temperature for forging. The feeding mechanism 4 then feeds the aluminum column that has been final forged into the interior of the feeding mechanism 4 for spin forming, and processes the aluminum column that has been final forged into a wheel. Finally, the formed wheel is punched, polished and heat treated.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forged passenger car aluminum wheel forming device, comprising a pre-forging mechanism (1), a final forging mechanism (2) and a spinning machine body (3), wherein the pre-forging mechanism (1), the final forging mechanism (2) and the spinning machine body (3) are all provided with a feeding mechanism (4) on the side thereof, characterized in that: The pre-forging mechanism (1) is used to pre-forge the aluminum column, the final forging mechanism (2) is used to perform final forging processing on the aluminum column after the pre-forging, the spinning machine body (3) is used to perform spinning processing on the aluminum column after the final forging to complete the wheel processing, the loading mechanism (4) is used to load and unload the aluminum column during the processing, the pre-forging mechanism (1) and the final forging mechanism (2) are both fixedly connected to the inside of the heating mechanism (5), and the pre-forging mechanism (1) and the final forging mechanism (2) are installed with a temperature sensor (6), the temperature sensor (6) is used to monitor the temperature of the aluminum column, and the heating mechanism (5) is used to heat the aluminum column during the processing.

2. The forged passenger car aluminum wheel forming device according to claim 1 is characterized in that: The pre-forging mechanism (1) comprises a No. 1 support frame (11), the upper portion of the No. 1 support frame (11) being fixedly connected to a No. 1 forging press body (12), a pre-forging upper die (13) and a pre-forging lower die (14) being respectively installed inside the No. 1 forging press body (12), the pre-forging upper die (13) being located above the pre-forging lower die (14).

3. The forged passenger car aluminum wheel forming device according to claim 2 is characterized in that: The final forging mechanism (2) comprises a No. 2 support frame (21), the upper portion of the No. 2 support frame (21) being fixedly connected to a No. 2 forging press body (22), a final forging upper die (23) and a final forging lower die (24) being respectively installed inside the No. 2 forging press body (22), the final forging upper die (23) being located above the final forging lower die (24).

4. The forged passenger car aluminum wheel forming device according to claim 3 is characterized in that: The feeding mechanism (4) comprises a mechanical arm (41), a clamping jaw driving assembly (42) being mounted at the end of the mechanical arm (41), and a movable clamping jaw (44) being movably connected to the driving end of the clamping jaw driving assembly (42).

5. The forged passenger car aluminum wheel forming device according to claim 4 is characterized in that: The front end of the mechanical arm (41) is fixedly connected to the limiting track (43), and the movable clamping claw (44) is slidably connected to the limiting track (43).

6. The forged passenger car aluminum wheel forming device according to claim 5, characterized in that: A connecting plate (45) is fixedly connected to the side of the movable clamping claw (44), a limiting rod (46) is inserted into the surface of the connecting plate (45), and one end of the limiting rod (46) is fixedly connected to a clamping plate (47).

7. The forged passenger car aluminum wheel forming device according to claim 6, characterized in that: The side of the clamping plate (47) is fixedly connected with an anti-slip layer (49), and the surface of the limiting rod (46) is provided with a spring (48), one end of the spring (48) is fixedly connected to the clamping plate (47), and the other end of the spring (48) is fixedly connected to the connecting plate (45).

8. The forged passenger car aluminum wheel forming device according to claim 7, characterized in that: The heating mechanism (5) comprises a fixed rod (53), the upper portion of the fixed rod (53) being fixedly connected to an annular slide rail (54), the interior of the annular slide rail (54) being slidably connected to an annular slider (55), a flame spray head (56) being mounted on the side of the annular slider (55), and the flame spray head (56) being externally connected to a gas supply device and an ignition device.

9. The forged passenger car aluminum wheel forming device according to claim 8, characterized in that: The heating mechanism (5) comprises a servo motor (51), a driving wheel (52) being fixedly connected to the upper portion of the servo motor (51), a through slot being provided on the side of the annular slide rail (54), and a side of the driving wheel (52) being located inside the through slot and in contact with a side of the annular slide block (55).

10. A forming method for a forged passenger car aluminum wheel forming device, characterized in that: A forged passenger car aluminum wheel forming device according to any one of claims 1 to 9 is used, comprising the following steps: S1. Raw material preparation: cutting out aluminum columns of set size and heating them with heating equipment to 350℃-450℃; S2, using the feeding mechanism (4) to feed the heated aluminum column into the pre-forging mechanism (1), and driving the pre-forging upper die (13) through the No. 1 forging press body (12) to perform a pre-forging process on the aluminum column; S3, loading the pre-forged aluminum column into the final forging mechanism (2) through the loading mechanism (4), and driving the final forging upper die (23) through the second forging press body (22) to perform final forging on the aluminum column; S4, the feeding mechanism (4) feeds the aluminum column after the final forging into the interior of the spinning machine body (3) for spinning forming, and the aluminum column after the final forging is processed into a wheel; S5. Punch, polish and heat treat the formed wheels.

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