A multi-station forging device and method for automobile aluminum alloy wheel hub

Abstract

The invention relates to the field of forging technology, and specifically discloses a multi-station forging device and method for automobile aluminum alloy wheel hubs, comprising a first turntable and a second turntable arranged on the top of a base, and a forging mechanism arranged on the top of the second turntable. The invention drives the first turntable and the second turntable to rotate by arranging a driving component, and arranges a plurality of upper mold bodies and lower mold bodies respectively suitable for rough forging and fine forging on the top of the second turntable of the first turntable, the upper mold body can be vertically moved by the forging mechanism, and the upper mold body is sleeved and connected with a pressure mechanism, so that it is convenient to perform rough forging and fine forging operations on forgings by one forging machine, reduce costs, and reduce the moving distance of forgings during the alternating process of rough forging and fine forging, thereby reducing heat loss and improving forging efficiency, and while ensuring that the upper mold body can move vertically by the disassembly and assembly mechanism, it is convenient to disassemble and assemble the upper mold body, so as to facilitate forging automobile aluminum alloy wheel hubs of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of forging, and in particular to a multi-station forging device and method for an automobile aluminum alloy wheel hub. Background Art

[0002] When forging automobile aluminum alloy wheels, aluminum alloy forgings of specified sizes are usually transferred to a rough forging station for rough forging after heating, so that the aluminum alloy forgings are forged into a pancake shape. After the rough forging is completed, they are transferred to a fine forging station for fine forging by a robotic arm. In order to ensure the quality of the automobile aluminum alloy wheels, fine forging is performed twice when fine forging the automobile aluminum alloy wheels. The pancake-shaped aluminum alloy is first forged into the approximate shape of the automobile wheel hub, then forged into the same shape as the automobile wheel hub, and finally spun to produce automobile aluminum alloy wheels. The purpose of multiple forgings is that the aluminum alloy will also be affected by external forces and temperature during the processing, thereby generating internal stress. The internal stress will cause plastic deformation or cracks in the material, affecting the performance of the material. Therefore, when forging automobile aluminum alloy wheels, the aluminum alloy forgings are usually not forged into the shape of the automobile wheel hub at one time, and multiple forgings will be performed.

[0003] Publication No. CN113000761B discloses a multi-station forging device for automotive aluminum alloy wheels. The problem raised in the background technology is: the traditional aluminum alloy wheel manufacturing process requires melting aluminum to die-cast a blank, then using a press to expand the rim, and then using a spinning machine to spin out the rim. The process is complicated. The device can relatively simply forge the wheel hub through the cooperation of various components. After the forging is completed, the wheel hub can be automatically taken out of the mold, so that the wheel hub can be processed more conveniently, which greatly improves the production efficiency.

[0004] Based on the existing technology, there are the following problems:

[0005] During rough forging and fine forging, the forged forgings are usually transferred to different forging machines for forging through the cooperation of a robotic arm and a hydraulic clamp. Therefore, multiple forging machines and robotic arms are required to work together, which is costly. In order to solve the above problems, a multi-station forging device and method for automotive aluminum alloy wheels are proposed. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a multi-station forging device and method for automobile aluminum alloy wheels, which provides forging pressure to the upper die body and the lower die body for fine forging and rough forging through a forging machine. Rough forging and fine forging of automobile aluminum alloy wheels can be performed without setting up multiple forging machines, and it is convenient to forge automobile aluminum alloy wheels of different sizes.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-station forging device for an automobile aluminum alloy wheel hub, comprising a base, a driving assembly arranged on the outside of the base, a first turntable arranged on the top of the base, a second turntable and a forging mechanism arranged on the top of the second turntable and arranged in a ring array, the tops of the first turntable and the second turntable are respectively provided with a lower mold body and an upper mold body arranged in a ring array, a pressure mechanism is provided on the top of the base and on the back of the first turntable, the pressure mechanism is used to drive the upper mold body to press downward, and cooperate with the lower mold body to produce automobile aluminum alloy wheel hubs, and a transfer mechanism for transferring forgings is provided on the top of the base, and the forging mechanism includes:

[0008] The mounting seat is fixed on the top of the second turntable and located on both sides of the upper mold body. A first slide groove is opened on the inner side of the mounting seat, a first slider is placed inside the first slide groove, a guide assembly is arranged on the top of the first slider, a connecting piece is fixed on the inner side of the first slider, a disassembly mechanism for disassembling and assembling the upper mold body is arranged on the inner side of the connecting piece, and the connecting piece is connected to the upper mold body through the disassembly mechanism so that the upper mold body can move vertically with the first slider.

[0009] Furthermore, the forging mechanism further comprises:

[0010] The electromagnet is fixedly arranged at the bottom of the first slider and the bottom inner wall of the first slide groove, and the sides of the electromagnets close to each other are the same poles, which are used to generate repulsive force after power is turned on to drive the upper mold body to move upward. The guide assembly includes:

[0011] A linear bearing is fixed on the top of the mounting seat. The inner wall of the inner ring of the linear bearing is sleeved with a guide rod. The bottom of the guide rod passes through the mounting seat and is fixedly connected to the top of the first slider. When the first slider moves, the guide rod is driven to move along the inner wall of the inner ring of the linear bearing to limit the movement of the upper mold body.

[0012] Further, the disassembly and assembly mechanism comprises:

[0013] The first mounting groove is provided on the inner side of the connecting piece and extends to the top of the connecting piece. The inner side wall of the first mounting groove is provided with a second mounting groove. A limiting sleeve is fixedly provided on the inner wall of the second mounting groove. A plug rod is sleeved on the inner wall of the limiting sleeve. An insert block is fixedly provided on one end of the plug rod close to the first mounting groove. A spring is sleeved on the side wall of the plug rod and located between the limiting sleeve and the insert block. A first limiting plate is fixedly sleeved on the side wall of the plug rod and located on the side of the limiting sleeve away from the insert block. A locking assembly is provided on the top of the first limiting plate.

[0014] The socket is fixedly arranged on both sides of the upper mold body, the outer wall of the socket is provided with a slot matched with the plug block, and the side wall of the socket is matched with the inner wall of the first installation groove.

[0015] Further, the locking assembly comprises:

[0016] A shift plate is fixedly arranged on the top of the outer wall of the first limit plate and extends to the top of the connecting member. A threaded rod is sleeved on one side wall of the shift plate located on the top of the connecting member, and a second limit plate is fixedly arranged on the end of the threaded rod;

[0017] The threaded seat is fixedly arranged on the top of the connecting piece, and the side wall of the threaded seat is threadedly connected with the side wall of the threaded rod.

[0018] Furthermore, the side wall diameter of the first limiting plate is larger than the inner wall diameter of the limiting sleeve to limit the movement of the insertion rod;

[0019] The top of the plug block and the bottom of the socket are both designed to be arc-shaped;

[0020] The bottom of the mounting seat extends to the bottom of the first rotating disk, the top of the first rotating disk is provided with a circular array of second through holes for sleeve mounting the upper mold body, and the second through holes are connected to the first sliding groove;

[0021] The side wall of the shifting plate is provided with a first through hole for sleeve-mounting the threaded rod, and the inner wall diameter of the first through hole is smaller than the side wall diameter of the second limiting plate, so as to limit the shifting plate;

[0022] A through slot for sleeve-mounting a shifting plate is provided on the top of the connecting piece, and the shifting plate moves along the inner wall of the through slot.

[0023] Further, the driving assembly comprises:

[0024] The servo motor is fixedly arranged on the outer top of the base, and the output shaft of the servo motor is fixedly provided with a rotating shaft through a coupling;

[0025] A rotating rod is rotatably arranged on the top of the base and is transmission-connected to the rotating shaft. The upper ends of the side walls of the rotating rod are respectively fixedly connected to the first rotating disk and the second rotating disk, so as to make the first rotating disk and the second rotating disk rotate coaxially along the rotating rod. The first rotating disk is located at the bottom of the second rotating disk. A bracket is fixedly provided on the side where the first rotating disk and the second rotating disk are close to each other, and is located on the inner side of the lower mold body, so as to connect the first rotating disk and the second rotating disk. The bottom of the first rotating disk is provided with a first limiting assembly and a second limiting assembly for limiting the first rotating disk.

[0026] Furthermore, the first limiting component includes:

[0027] The pillars are fixedly arranged on the top of the base in an annular array, a first annular slide is fixedly arranged on the top of the pillars, a first annular slide is opened on the top of the first annular slide, a first annular slider is placed inside the first annular slide, and the top of the first annular slider is fixedly connected to the bottom of the first turntable, the first annular slider rotates along the first annular slide to limit the outer side of the first turntable during the rotation, the front sides of the first annular slide and the first annular slider are both designed in an open shape, and the second limiting component includes:

[0028] The second annular slide is arranged between the rotating rod and the first annular slide and is fixed on the top of the base. A second annular slide is opened on the top of the second annular slide. A second annular slider is placed inside the second annular slide. The top of the second annular slider is fixedly connected to the bottom of the first turntable for limiting the inner side of the first turntable during rotation.

[0029] Further, the pressure mechanism comprises:

[0030] The machine body is fixed at the top rear end of the base, a hydraulic rod is fixed at the top front side of the machine body, a pressing block is fixed at the telescopic shaft of the hydraulic rod, a pressing seat is fixed at the top of the upper mold body, and a pressing groove adapted to the pressing block is opened at the top of the pressing seat, and the cross section of the pressing block is designed to be a regular hexagon;

[0031] The transfer mechanism includes:

[0032] The mechanical arm is fixedly arranged on the top of the base and is located on the outer side of the first rotating disk close to the machine body. A hydraulic clamp is fixedly arranged on the lower part of the mechanical arm.

[0033] Furthermore, the upper die body and the lower die body are vertically aligned and used for rough forging and fine forging of the forging. A push assembly is fixedly provided on the top of one side of the base close to the machine body, and the push assembly includes:

[0034] The hydraulic push rod is fixedly sleeved on the top of the base, and a push block is fixedly arranged on the telescopic shaft of the hydraulic push rod.

[0035] A method for using a multi-station forging device for an automobile aluminum alloy wheel hub, using the multi-station forging device for an automobile aluminum alloy wheel hub, the method comprises the following steps:

[0036] S1: The forging for automobile aluminum alloy wheel hub is placed in the lower die body for rough forging through the transfer mechanism, and then the upper die body is driven to move through the pressure mechanism, and the forging is roughly forged with the forging mechanism, so that the forging is forged into a pancake shape;

[0037] S2: After the forging is forged into a pancake shape, the pancake-shaped forging is transferred by a transfer mechanism, and then the first turntable and the second turntable are driven to rotate by a drive assembly, so that the upper die body and the lower die body for fine forging are rotated to the bottom of the pressure mechanism, and then fine forging is performed, and this is repeated to make the pancake-shaped forging forged into the shape of an automobile wheel hub.

[0038] The present invention provides a multi-station forging device and method for automobile aluminum alloy wheel hubs. Compared with the prior art, it has the following beneficial effects:

[0039] 1. The present invention drives the first turntable and the second turntable to rotate by setting a driving component, and sets a plurality of upper dies and lower dies respectively suitable for rough forging and fine forging on the top of the second turntable of the first turntable, and the upper die is vertically movable by a forging mechanism, and the upper die is sleeve-connected with a pressure mechanism, so that it is convenient to perform rough forging and fine forging operations on forgings by one forging machine, thereby reducing costs and reducing the moving distance of forgings during the alternating process of rough forging and fine forging, thereby reducing heat loss and improving forging efficiency, and the disassembly and assembly mechanism ensures that the upper die can move vertically, and it is convenient to disassemble and assemble the upper die, so as to facilitate the forging of automobile aluminum alloy wheels of different sizes.

[0040] 2. In the present invention, when the pressure mechanism drives the upper mold body to move downward through the forging mechanism, the upper mold body drives the connecting part and the first slider to move vertically along the first slide groove through the disassembly and assembly mechanism, so that the upper mold body moves downward and engages with the lower mold body, so as to forge the forging. After the pressure mechanism completes one forging, the electromagnet is energized to generate a repulsive force to drive the upper mold body to move upward and reset, so as to facilitate the removal of the forged forging and the next forging. After the upper mold body completes the maximum downward movement, the electromagnets at the bottom of the first slider and the inner wall of the bottom of the first slide groove do not contact each other, so as to avoid damage to the electromagnet.

[0041] 3. The present invention limits the movement of the first slider through the guide assembly, thereby limiting the movement of the upper mold body, thereby improving the stability of forging, and supports and limits the outer side and inner side of the first turntable by setting the first limit assembly and the second limit assembly, thereby ensuring stability during the forging process without affecting the normal rotation of the first turntable.

[0042] 4. The present invention facilitates the disassembly and assembly of the upper mold body through the disassembly and assembly mechanism, thereby facilitating the replacement of upper mold bodies of different sizes and facilitating the forging of automobile aluminum alloy wheels of different sizes without affecting the movement of the upper mold body. The socket and the upper mold body are limited by the first mounting groove and the plug block to avoid affecting the forging stability. When the pressure mechanism drives the upper mold body to move downward, the bottom of the upper mold body first contacts the bottom inner wall of the first mounting groove, that is, the connecting piece. At this time, the plug block is not subjected to vertical force, thereby avoiding damage to the plug block due to excessive downward pressure during the forging process, thereby avoiding affecting the stability of the connection.

[0043] 5. The present invention limits the position of the first limit plate through the locking assembly, thereby limiting the position of the insertion rod and the insertion block. When installing the upper mold body, the second limit plate is kept away from the shift plate to avoid the situation where the insertion rod cannot move after being squeezed by the insertion block. After the upper mold body is installed, the second limit plate is pressed against the shift plate to prevent the shift plate from moving in the opposite direction, thereby limiting the position of the insertion rod and the insertion block, that is, ensuring the stability of the installation of the upper mold body. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1This is a schematic diagram of the overall structure of the multi-station forging device for automobile aluminum alloy wheels of the present invention;

[0045] Figure 2 It is a schematic diagram of the rear view structure of the base of the present invention;

[0046] Figure 3 It is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0047] Figure 4 It is a schematic diagram of the structure of the first rotating disk and the second rotating disk of the present invention;

[0048] Figure 5 It is a schematic structural diagram of the first rotating disk, the second rotating disk and the pushing assembly of the present invention;

[0049] Figure 6 It is a schematic diagram of the first limiting component and the bracket structure of the present invention;

[0050] Figure 7 is a schematic cross-sectional structural diagram of a second rotating disk of the present invention;

[0051] Figure 8 It is a schematic diagram of the forging mechanism structure of the present invention;

[0052] Fig. 9 It is a schematic diagram of the disassembly and assembly mechanism and the connecting member structure of the present invention;

[0053] Fig.10 It is a schematic diagram of the cross-sectional structure of the connecting piece of the present invention;

[0054] Fig.11 It is a schematic diagram of the disassembly and assembly mechanism structure of the present invention;

[0055] Fig.12 It is a schematic diagram of the structure of the threaded seat and the limiting sleeve of the present invention;

[0056] Fig.13 It is a schematic diagram of the structure of the first limiting component and the second limiting component of the present invention;

[0057] Fig.14 It is a schematic diagram of the structure of the second limiting component of the present invention;

[0058] Fig.15 It is a schematic diagram of the pressure mechanism structure of the present invention;

[0059] Fig.16 It is a schematic diagram of the transfer mechanism structure of the present invention;

[0060] Fig.17 It is a schematic diagram of the structure of the pushing component of the present invention.

[0061] The reference numerals involved in the above drawings are: 1, base; 2, transfer mechanism; 3, pressure mechanism; 4, driving assembly; 5, lower mold body; 6, first turntable; 7, forging mechanism; 8, upper mold body; 9, pushing assembly; 10, first limit assembly; 11, bracket; 12, disassembly and assembly mechanism; 13, press seat; 14, second limit assembly; 15, second turntable;

[0062] 21. Mechanical arm; 22. Hydraulic clamp;

[0063] 31. Machine body; 32. Hydraulic rod; 33. Press block;

[0064] 41. servo motor; 42. rotating rod;

[0065] 71. first slider; 72. connecting member; 73. electromagnet; 74. guide assembly; 75. mounting seat;

[0066] 741. Guide rod; 742. Linear bearing;

[0067] 91. Hydraulic push rod; 92. Push block;

[0068] 101. pillar; 102. first annular sliding seat; 103. first annular sliding block;

[0069] 121, socket; 122, plug block; 123, limit sleeve; 124, second mounting groove; 125, locking assembly; 126, first mounting groove; 127, first limit plate; 128, plug rod;

[0070] 1251, a dial plate; 1252, a second limit plate; 1253, a threaded seat; 1254, a threaded rod;

[0071] 141. Second annular sliding seat; 142. Second annular sliding block. DETAILED DESCRIPTION

[0072] 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 described embodiments 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.

[0073] For example, see Figure 1 , Figure 2 and Figure 3A multi-station forging device for an automobile aluminum alloy wheel hub comprises a base 1, a driving assembly 4 arranged outside the base 1, a first turntable 6 arranged on the top of the base 1, a second turntable 15, and a forging mechanism 7 arranged on the top of the second turntable 15 and arranged in a ring array. The tops of the first turntable 6 and the second turntable 15 are respectively provided with a lower mold body 5 and an upper mold body 8 arranged in a ring array. A pressure mechanism 3 is provided on the top of the base 1 and on the back of the first turntable 6. The pressure mechanism 3 is used to drive the upper mold body 8 to apply pressure downward and cooperate with the lower mold body 5 to produce automobile aluminum alloy wheels. A transfer mechanism 2 for transferring forgings is provided on the top of the base 1.

[0074] See also Fig.15 , the pressure mechanism 3 comprises:

[0075] The machine body 31 is fixed on the top of the base 1, a hydraulic rod 32 is fixed on the front side of the top of the machine body 31, a pressing block 33 is fixed on the telescopic shaft of the hydraulic rod 32, a pressing seat 13 is fixed on the top of the upper die body 8, and a pressing groove adapted to the pressing block 33 is opened on the top of the pressing seat 13, and the cross section of the pressing block 33 is designed in a regular hexagonal shape to improve the forging stability;

[0076] During the specific implementation, the pressing block 33 is driven to move by the telescopic shaft of the hydraulic rod 32, so that the pressing block 33 is inserted into the pressing groove, thereby driving the pressing seat 13 to move downward. Since the pressing seat 13 is fixed on the top of the upper mold body 8, the upper mold body 8 is driven to move downward. With the cooperation of the forging mechanism 7, the upper mold body 8 has a certain vertical moving space, so that the upper mold body 8 and the lower mold body 5 are engaged to forge the automobile aluminum alloy wheel hub.

[0077] See also Fig.16 , the transfer mechanism 2 comprises:

[0078] The mechanical arm 21 is fixedly disposed on the top of the base 1 and is located outside the first turntable 6 on one side close to the machine body 31 . A hydraulic clamp 22 is fixedly disposed at the lower part of the mechanical arm 21 .

[0079] The upper die body 8 and the lower die body 5 are vertically aligned, and the vertically aligned upper die body 8 and the lower die body 5 are adapted to perform rough forging and fine forging on the forging. A pushing assembly 9 is fixedly provided on the top of the side of the base 1 close to the machine body 31;

[0080] In the specific implementation, the forging is clamped by the hydraulic clamp 22, and the hydraulic clamp 22 is driven to move by the mechanical arm 21, so that the position of the forging can be adjusted, which is convenient for transferring the forging when it is needed during the alternating process of rough forging and fine forging, and the mechanical arm 21 can adopt a six-axis mechanical arm 21 to ensure the adjustment range and flexibility.

[0081] See also Figure 5 and Fig.17 , the pushing component 9 comprises:

[0082] The hydraulic push rod 91 is fixedly arranged on the top of the base 1 , and a push block 92 is fixedly arranged on the telescopic shaft of the hydraulic push rod 91 .

[0083] During the specific implementation, the hydraulic push rod 91 is started, and the telescopic shaft of the hydraulic push rod 91 drives the push block 92 to move. When the telescopic shaft of the hydraulic push rod 91 drives the push block 92 to move downward, the forging is placed in the lower die body 5 used for rough forging. When the telescopic shaft of the hydraulic push rod 91 drives the push block 92 to move upward, it is convenient to push the forging completed by rough forging to the top of the lower die body 5, which is convenient for subsequent transfer and other operations.

[0084] See also Figure 3 and Figure 4 , the driving component 4 comprises:

[0085] The servo motor 41 is fixedly arranged on the outer top of the base 1, and the output shaft of the servo motor 41 is fixedly arranged with a rotating shaft through a coupling;

[0086] The rotating rod 42 is rotatably arranged on the top of the base 1 and is connected to the rotating shaft transmission. The upper ends of the side walls of the rotating rod 42 are respectively fixedly connected to the first turntable 6 and the second turntable 15, so as to make the first turntable 6 and the second turntable 15 rotate coaxially along the rotating rod 42. The first turntable 6 is located at the bottom of the second turntable 15. A bracket 11 is fixedly provided on the side where the first turntable 6 and the second turntable 15 are close to each other, and is located on the inner side of the lower mold body 5, so as to connect the first turntable 6 and the second turntable 15. The bottom of the first turntable 6 is provided with a first limit assembly 10 and a second limit assembly 14 for limiting the first turntable 6.

[0087] In the specific implementation, the servo motor 41 is started, and the output shaft at the end of the servo motor 41 drives the rotating shaft to rotate through the coupling, and the rotating shaft drives the rotating rod 42 to rotate through the chain and the gear, thereby driving the first rotating disk 6 and the second rotating disk 15 to rotate, so as to adjust the positions of the upper mold body 8 and the lower mold body 5;

[0088] The transmission structure of the transmission shaft and the rotating rod 42 can adopt the transmission method of chain and gear, which is the existing technology and will not be described here. In addition, a groove for installing the transmission connection is provided at the bottom of the base 1 in the present invention to ensure normal transmission use.

[0089] See also Figure 7 and Figure 8 , the forging mechanism 7 comprises:

[0090] The mounting seat 75 is fixed on the top of the second turntable 15 and is located on both sides of the upper mold body 8. A first slide groove is opened on the inner side of the mounting seat 75, and a first slider 71 is placed inside the first slide groove. A guide assembly 74 is arranged on the top of the first slider 71. A connecting piece 72 is fixed on the inner side of the first slider 71, and a disassembly mechanism 12 for disassembling and assembling the upper mold body 8 is arranged on the inner side of the connecting piece 72. The connecting piece 72 is connected to the upper mold body 8 through the disassembly mechanism 12, so that the upper mold body 8 can move vertically with the first slider 71.

[0091] The forging mechanism 7 also includes:

[0092] The electromagnet 73 is fixedly disposed on the bottom of the first slider 71 and the bottom inner wall of the first slide groove, and the sides of the electromagnets 73 close to each other are the same poles, which are used to generate repulsive force after power is turned on to drive the upper mold body 8 to move upward.

[0093] In the specific implementation, when the pressure mechanism 3 drives the upper mold body 8 to move downward, the upper mold body 8 drives the connecting piece 72 and the first slide block 71 to move vertically along the first slide groove through the disassembly mechanism 12, so that the upper mold body 8 moves downward and fits with the lower mold body 5, so as to forge the forging. After the pressure mechanism 3 completes one forging, the electromagnet 73 is energized to generate a repulsive force to drive the upper mold body 8 to move upward and reset, so as to facilitate the removal of the forged forging and facilitate the next forging use.

[0094] When the upper mold body 8 moves downward with the pressure mechanism 3, after the upper mold body 8 completes the maximum downward movement, the bottom of the first slider 71 and the electromagnet 73 on the inner wall of the bottom of the first slide groove do not contact each other, thereby avoiding damage to the electromagnet 73;

[0095] The upper die body 8 and the lower die body 5 arranged in a circular array are respectively used for rough forging and multiple fine forgings of the forgings. Multiple upper die bodies 8 and lower die bodies 5 are provided and are rotated to facilitate the rotation of the upper die bodies 8 and lower die bodies 5 with different functions to the bottom of the pressure mechanism 3 to facilitate different forging needs. The upper die body 8 and the pressure mechanism 3 are separately provided to facilitate rough forging and fine forging operations by one forging machine.

[0096] See also Figure 8 , the guide assembly 74 comprises:

[0097] The linear bearing 742 is fixed on the top of the mounting seat 75. The inner wall of the inner ring of the linear bearing 742 is sleeved with a guide rod 741. The bottom of the guide rod 741 passes through the mounting seat 75 and is fixedly connected to the top of the first slider 71. When the first slider 71 moves, it drives the guide rod 741 to move along the inner wall of the inner ring of the linear bearing 742 to limit the movement of the upper mold body 8.

[0098] In specific implementation, when the first slider 71 moves along the first slide groove, it drives the guide rod 741 to move vertically along the inner wall of the inner ring of the linear bearing 742, thereby limiting the movement of the first slider 71 and ensuring the stability of the movement of the first slider 71 and the upper mold body 8.

[0099] See also Figure 6 and Fig.13 , the first limiting assembly 10 includes:

[0100] The pillars 101 are fixedly arranged on the top of the base 1 in an annular array, and a first annular slide 102 is fixedly arranged on the top of the pillars 101. A first annular groove is opened on the top of the first annular slide 102, and a first annular slider 103 is placed inside the first annular groove. The top of the first annular slider 103 is fixedly connected to the bottom of the first turntable 6. The first annular slider 103 rotates along the first annular groove to limit the outer side of the first turntable 6 during the rotation process. The front sides of the first annular slide 102 and the first annular slider 103 are both designed to be open;

[0101] See also Fig.14 , the second limiting component 14 includes:

[0102] The second annular slide 141 is fixedly arranged on the top of the base 1 and is located between the rotating rod 42 and the first annular slide 102. A second annular slide groove is provided on the top of the second annular slide 141. A second annular slide block 142 is placed inside the second annular slide groove. The top of the second annular slide block 142 is fixedly connected to the bottom of the first turntable 6 for limiting the inner side of the first turntable 6 during rotation.

[0103] The first annular slider 103 and the second annular slider 142 rotate in the first annular groove and the second annular groove respectively, so as to facilitate supporting the outer side and the inner side of the first turntable 6 to ensure stability during the forging process without affecting the normal rotation of the first turntable 6.

[0104] For example 2, please refer to Fig. 9 , Fig.10 , Fig.11 and Fig.12 The technical solution of this embodiment is different from that of the first embodiment in that the disassembly mechanism 12 includes:

[0105] The first mounting groove 126 is provided on the inner side of the connecting member 72 and extends to the top of the connecting member 72. The inner side wall of the first mounting groove 126 is provided with a second mounting groove 124. A limiting sleeve 123 is fixedly provided on the inner wall of the second mounting groove 124. A plug rod 128 is sleeved on the inner wall of the limiting sleeve 123. An insert block 122 is fixedly provided on one end of the plug rod 128 close to the first mounting groove 126. A spring is sleeved on the side wall of the plug rod 128 and located between the limiting sleeve 123 and the insert block 122. A first limiting plate 127 is fixedly sleeved on the side wall of the plug rod 128 and located on the side of the limiting sleeve 123 away from the insert block 122. A locking assembly 125 is provided on the top of the first limiting plate 127.

[0106] The socket 121 is fixedly disposed on both sides of the upper mold body 8 . An outer wall of the socket 121 is provided with a slot matched with the plug block 122 , and a side wall of the socket 121 is matched with an inner wall of the first mounting groove 126 .

[0107] In the specific implementation, the upper mold body 8 is placed in the second through hole. At this time, the socket 121 is sleeved in the first mounting groove 126. During this process, the socket 121 squeezes the plug block 122, so that the plug block 122 squeezes the spring and drives the plug rod 128 to move. When the bottom of the socket 121 contacts the bottom inner wall of the first mounting groove 126, the plug block 122 is level with the slot. At this time, under the reverse action of the spring, the plug block 122 is inserted into the slot, thereby fixing the socket 121 and the upper mold body 8;

[0108] When the pressure mechanism 3 drives the upper mold body 8 to move downward, the bottom of the upper mold body 8 first contacts the bottom inner wall of the first mounting groove 126, that is, the connecting piece 72. At this time, the insert block 122 is not subjected to vertical force, thereby preventing the stability of the connection from being affected by excessive downward pressure during the forging process.

[0109] The limiting sleeve 123 is limited by the first limiting plate 127 , thereby limiting the insertion rod 128 , thereby preventing the insertion rod 128 from being separated from the limiting sleeve 123 .

[0110] See also Fig.11 and Fig.12 , the locking assembly 125 comprises:

[0111] The shift plate 1251 is fixedly disposed on the top of the outer wall of the first limiting plate 127 and extends to the top of the connecting member 72. A threaded rod 1254 is sleeved on one side wall of the shift plate 1251 located at the top of the connecting member 72. A second limiting plate 1252 is fixedly disposed on the end of the threaded rod 1254.

[0112] The threaded seat 1253 is fixedly disposed on the top of the connecting member 72 , and the side wall of the threaded seat 1253 is threadedly connected to the side wall of the threaded rod 1254 .

[0113] In specific implementation, when installing the upper mold body 8, first loosen the threaded rod 1254 to make the second limit plate 1252 away from the shift plate 1251, so as to avoid the situation that the insertion rod 128 cannot move after being squeezed by the insertion block 122. After the upper mold body 8 is installed, tighten the threaded rod 1254 to make the second limit plate 1252 press against the shift plate 1251 to prevent the shift plate 1251 from moving in the opposite direction, thereby limiting the insertion rod 128 and the insertion block 122, that is, ensuring the stability of the installation of the upper mold body 8.

[0114] The side wall diameter of the first limiting plate 127 is larger than the inner wall diameter of the limiting sleeve 123 to limit the movement of the insertion rod 128;

[0115] The top of the plug block 122 and the bottom of the socket 121 are both designed to be arc-shaped, so that the socket 121 can be easily inserted into the first installation groove 126;

[0116] The bottom of the mounting seat 75 extends to the bottom of the first turntable 6. The top of the first turntable 6 is provided with a circular array of second through holes for sleeve mounting the upper mold body 8. The second through holes are connected to the first slide groove to facilitate the vertical movement of the upper mold body 8.

[0117] The side wall of the shifting plate 1251 is provided with a first through hole for sleeve mounting the threaded rod 1254, and the inner wall diameter of the first through hole is smaller than the side wall diameter of the second limiting plate 1252, so as to limit the shifting plate 1251;

[0118] A through slot for sleeve-mounting the shifting plate 1251 is formed on the top of the connecting member 72 , and the shifting plate 1251 moves along the inner wall of the through slot.

[0119] A method for using a multi-station forging device for an automobile aluminum alloy wheel hub, using a multi-station forging device for an automobile aluminum alloy wheel hub, the method comprising the following steps:

[0120] S1: The forging for automobile aluminum alloy wheel hub is placed on the top of the push block 92 of the push assembly 9 through the transfer mechanism 2, that is, the forging for automobile aluminum alloy wheel hub is placed in the lower die body 5 for rough forging, and then the upper die body 8 is driven to move by the pressure mechanism 3, and cooperates with the forging mechanism 7 to make the upper die body 8 have a certain vertical moving space, so as to facilitate the cooperation with the lower die body 5 to perform rough forging on the forging, so that the forging is forged into a pancake shape;

[0121] S2: After the forging is forged into a pancake shape, since the pressure block 33 is sleeved in the pressure seat 13, when the pressure mechanism 3 completes a forging reset, the upper mold body 8 does not move up with the pressure mechanism 3. At this time, the upper mold body 8 is reset by the forging mechanism 7 to separate the upper mold body 8 and the lower mold body 5. Then, the forging in the lower mold body 5 is ejected and demolded by the pushing component 9, so that the pancake-shaped forging can be transferred by the transfer mechanism 2. Then, the first turntable 6 and the second turntable 15 are driven to rotate by the driving component 4, so that the upper mold body 8 and the lower mold body 5 for fine forging are rotated to the bottom of the pressure mechanism 3, and then, fine forging is performed. This is repeated to make the pancake-shaped forging forged into the shape of a car wheel hub.

[0122] When it is necessary to forge automobile aluminum alloy wheels of different specifications, the upper mold body 8 can be disassembled and assembled through the disassembly and assembly mechanism 12 without affecting the normal operation of the forging mechanism 7, and the lower mold body 5 can be disassembled and assembled through bolts, etc., which is convenient for forging automobile aluminum alloy wheels of different specifications.

[0123] During the rough forging of the aluminum alloy wheel hub for automobiles, since the forging is to be forged into a pancake shape, the forging needs to be completely placed in the lower die 5. To ensure convenient demoulding and transfer by a mechanical arm 21 after demoulding, a pushing assembly 9 is usually provided to eject the forging from the lower die 5 for rough forging for practical use. This is a prior art and will not be elaborated here. To ensure that the pushing assembly 9 does not affect the normal use of the forging mechanism 7 and the rotation of the first turntable 6, the hydraulic push rod 91 of the pushing assembly 9 is located at the bottom of the first turntable 6 when contracted so as not to affect the rotation of the first turntable 6, and a pushing hole for the movement of the push block 92 is provided at the connection between the lower die 5 and the first turntable 6 for rough forging.

[0124] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0125] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0126] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station forging device for an automobile aluminum alloy wheel hub, comprising a base, characterized in that: The invention also includes a driving assembly arranged on the outside of the base, a first turntable and a second turntable arranged on the top of the base, and a forging mechanism arranged on the top of the second turntable and arranged in a circular array. The tops of the first turntable and the second turntable are respectively provided with a lower mold body and an upper mold body arranged in a circular array. A pressure mechanism is arranged on the top of the base and on the back of the first turntable. The pressure mechanism is used to drive the upper mold body to press downward and cooperate with the lower mold body to produce automobile aluminum alloy wheels. A transfer mechanism for transferring forgings is arranged on the top of the base. The forging mechanism includes: A mounting seat is fixedly arranged on the top of the second rotating disk and is located on both sides of the upper mold body. A first slide groove is provided on the inner side of the mounting seat. A first slider is placed inside the first slide groove. A guide assembly is provided on the top of the first slider. A connecting piece is fixedly arranged on the inner side of the first slider. A disassembly mechanism for disassembling and assembling the upper mold body is provided on the inner side of the connecting piece. The connecting piece is connected to the upper mold body through the disassembly mechanism so that the upper mold body moves vertically with the first slider. The drive assembly comprises: The servo motor is fixedly arranged on the outer top of the base, and the output shaft of the servo motor is fixedly provided with a rotating shaft through a coupling; A rotating rod is rotatably arranged on the top of the base and is transmission-connected to the rotating shaft. The upper ends of the side walls of the rotating rod are respectively fixedly connected to the first rotating disk and the second rotating disk, so as to make the first rotating disk and the second rotating disk coaxially rotate along the rotating rod. The first rotating disk is located at the bottom of the second rotating disk. A bracket is fixedly arranged on the side where the first rotating disk and the second rotating disk are close to each other, and is located on the inner side of the lower mold body, so as to connect the first rotating disk and the second rotating disk. A first limiting assembly and a second limiting assembly for limiting the first rotating disk are arranged at the bottom of the first rotating disk. The pressure mechanism comprises: The machine body is fixed at the top rear end of the base, a hydraulic rod is fixed at the top front side of the machine body, a pressing block is fixed at the telescopic shaft of the hydraulic rod, a pressing seat is fixed at the top of the upper mold body, and a pressing groove adapted to the pressing block is opened at the top of the pressing seat, and the cross section of the pressing block is designed to be a regular hexagon; The transfer mechanism includes: The mechanical arm is fixedly arranged on the top of the base and located outside the first rotating disk on one side close to the machine body, and a hydraulic clamp is fixedly arranged on the lower part of the mechanical arm; The upper die body and the lower die body are vertically aligned and used for rough forging and fine forging of forgings. A push assembly is fixedly provided on the top of the side of the base close to the machine body. The push assembly includes: The hydraulic push rod is fixedly sleeved on the top of the base, and a push block is fixedly arranged on the telescopic shaft of the hydraulic push rod.

2. The multi-station forging device for automobile aluminum alloy wheel hub according to claim 1, characterized in that: The forging mechanism also includes: The electromagnet is fixedly arranged at the bottom of the first slider and the bottom inner wall of the first slide groove, and the sides of the electromagnets close to each other are the same poles, which are used to generate repulsive force after power is turned on to drive the upper mold body to move upward. The guide assembly includes: A linear bearing is fixed on the top of the mounting seat. The inner wall of the inner ring of the linear bearing is sleeved with a guide rod. The bottom of the guide rod passes through the mounting seat and is fixedly connected to the top of the first slider. When the first slider moves, the guide rod is driven to move along the inner wall of the inner ring of the linear bearing to limit the movement of the upper mold body.

3. The multi-station forging device for automobile aluminum alloy wheel hub according to claim 1, characterized in that: The disassembly and assembly mechanism comprises: The first mounting groove is provided on the inner side of the connecting piece and extends to the top of the connecting piece. The inner side wall of the first mounting groove is provided with a second mounting groove. A limiting sleeve is fixedly provided on the inner wall of the second mounting groove. A plug rod is sleeved on the inner wall of the limiting sleeve. An insert block is fixedly provided on one end of the plug rod close to the first mounting groove. A spring is sleeved on the side wall of the plug rod and located between the limiting sleeve and the insert block. A first limiting plate is fixedly sleeved on the side wall of the plug rod and located on the side of the limiting sleeve away from the insert block. A locking assembly is provided on the top of the first limiting plate. The socket is fixedly arranged on both sides of the upper mold body, the outer wall of the socket is provided with a slot matched with the plug block, and the side wall of the socket is matched with the inner wall of the first installation groove.

4. The multi-station forging device for automobile aluminum alloy wheel hub according to claim 3 is characterized in that: The locking assembly comprises: A shift plate is fixedly arranged on the top of the outer wall of the first limit plate and extends to the top of the connecting member. A threaded rod is sleeved on one side wall of the shift plate located on the top of the connecting member, and a second limit plate is fixedly arranged on the end of the threaded rod; The threaded seat is fixedly arranged on the top of the connecting piece, and the side wall of the threaded seat is threadedly connected with the side wall of the threaded rod.

5. The multi-station forging device for automobile aluminum alloy wheel hub according to claim 4 is characterized in that: The side wall diameter of the first limiting plate is larger than the inner wall diameter of the limiting sleeve to limit the movement of the insertion rod; The top of the plug block and the bottom of the socket are both designed to be arc-shaped; The bottom of the mounting seat extends to the bottom of the first rotating disk, the top of the first rotating disk is provided with a circular array of second through holes for sleeve mounting the upper mold body, and the second through holes are connected to the first sliding groove; The side wall of the shifting plate is provided with a first through hole for sleeve-mounting the threaded rod, and the inner wall diameter of the first through hole is smaller than the side wall diameter of the second limiting plate, so as to limit the shifting plate; A through slot for sleeve-mounting a shifting plate is provided on the top of the connecting piece, and the shifting plate moves along the inner wall of the through slot.

6. The multi-station forging device for automobile aluminum alloy wheel hub according to claim 1, characterized in that: The first limiting component comprises: The pillars are fixedly arranged on the top of the base in an annular array, a first annular slide is fixedly arranged on the top of the pillars, a first annular slide is opened on the top of the first annular slide, a first annular slider is placed inside the first annular slide, and the top of the first annular slider is fixedly connected to the bottom of the first turntable, the first annular slider rotates along the first annular slide to limit the outer side of the first turntable during the rotation, the front sides of the first annular slide and the first annular slider are both designed in an open shape, and the second limiting component includes: The second annular slide is arranged between the rotating rod and the first annular slide and is fixed on the top of the base. A second annular slide is opened on the top of the second annular slide. A second annular slider is placed inside the second annular slide. The top of the second annular slider is fixedly connected to the bottom of the first turntable for limiting the inner side of the first turntable during rotation.

7. A method for using a multi-station forging device for an automobile aluminum alloy wheel hub, characterized in that: Using the multi-station forging device for automotive aluminum alloy wheels according to any one of claims 1 to 6, the method comprises the following steps: S1: The forging for automobile aluminum alloy wheel hub is placed in the lower die body for rough forging through the transfer mechanism, and then the upper die body is driven to move through the pressure mechanism, and the forging is roughly forged with the forging mechanism, so that the forging is forged into a pancake shape; S2: After the forging is forged into a pancake shape, the pancake-shaped forging is transferred by a transfer mechanism, and then the first turntable and the second turntable are driven to rotate by a drive assembly, so that the upper die body and the lower die body for fine forging are rotated to the bottom of the pressure mechanism, and then fine forging is performed, and this is repeated to make the pancake-shaped forging forged into the shape of an automobile wheel hub.

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