Automobile hub gravity die

Abstract

The utility model discloses an automobile hub gravity die, which particularly relates to the field of dies and comprises a bottom support, a workbench arranged on the bottom support, a hanging bracket arranged on the workbench and a hub gravity die module arranged on the workbench. The hub gravity mold module comprises a bottom mold fixedly connected to the upper surface of the workbench, two pairs of side molds arranged on the outer side of the bottom mold and a top mold arranged above the bottom mold. The device further comprises a rotating traction structure, a first gear, a linear telescopic driving unit, a supporting reset piece and an ejector pin control rod. The rotating traction structures are arranged on one side of the side mold, and the number of the rotating traction structures is two. Each rotating traction structure comprises a fixed plate detachably connected to the outer side face of the corresponding side mold, a movable seat arranged on one side of the fixed plate, a pair of rotating seats fixedly connected to the movable seat and a rotating shaft arranged on the pair of rotating seats. According to the utility model, the current gravity mold can be used for quickly taking out the automobile hub and conveniently cleaning the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more specifically, the utility model relates to a gravity mold for automobile wheels. Background Art

[0002] At present, in the automobile wheel manufacturing industry, the market has more and more diverse and personalized requirements for factors such as the performance and appearance of automobile wheels, and the requirements for the product shape are also becoming stricter. Gravity molds have also been put into the production process of automobile wheels to ensure that the products have good use performance and ensure the forming quality of the products. A gravity mold is a mold that uses the earth's gravity for production. It means that molten metal is injected into the mold under the action of the earth's gravity to form a casting, which is also called pouring.

[0003] Patent No. CN218926157U discloses a side mold of a new type of automobile wheel mold, including a base, two groups of mold bodies and two groups of inner liner bodies. A connecting block is fixedly installed on the outer surface of each inner liner body, and each connecting block is clamped inside the mold body. A bidirectional ball precision lead screw is rotatably connected inside each mold body. Two limit blocks are threadedly connected to the outer surface of each bidirectional ball precision lead screw. Each group of limit blocks is clamped inside the connecting block. One end of each bidirectional ball precision lead screw away from the limit block penetrates through the mold body and is fixedly installed with a turntable. A connecting spring is fixedly installed on the outer surface of each mold body. One end of each connecting spring away from the mold body is fixedly installed with a connecting column, and each connecting column is clamped inside the turntable; through the setting of the bidirectional ball precision lead screw, the limit block, the inner liner body and the connecting block, the utility model realizes the purpose of conveniently processing wheels of different models.

[0004] In the above patent, the inventor believes that when the patent is in use, how to realize the quick demolding and taking out of the automobile wheel and the convenient cleaning of the mold are the problems that need to be solved at present. In the existing technical means, the opening and closing of the side mold are controlled by a one-to-one corresponding hydraulic device. The operation of this hydraulic control system is relatively complicated and also increases the cost. At the same time, because the wheel is located on the bottom mold, it is still difficult to take out the wheel when demolding. In addition, because the inner wall of the side mold needs to be cleaned every time it is processed, although the side mold meets the mobility, the limitation of the moving position makes the cleaning of the side mold inconvenient. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a gravity mold for automobile wheels. The technical problem to be solved by the utility model is: how to realize the quick demolding and taking out of the automobile wheel and the convenient cleaning of the mold.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An automotive wheel gravity die, comprising a bottom bracket, a workbench is arranged on the bottom bracket, a hanging bracket is arranged on the workbench, and a wheel gravity die module is arranged on the workbench. The wheel gravity die module includes a bottom die fixedly connected to the upper surface of the workbench, two pairs of side dies arranged outside the bottom die, and a top die arranged above the bottom die;

[0007] A rotational traction structure, the rotational traction structure is arranged on one side of the side die, and the number of rotational traction structures is two groups; Each rotational traction structure includes a fixing plate detachably connected to the outer side surface of the side die, a moving seat arranged on one side of the fixing plate, a pair of rotating seats fixedly connected to the moving seat, and a rotating shaft arranged on the pair of rotating seats. The fixing plate is rotatably connected to the rotating seat through the rotating shaft. A sliding seat is fixedly connected to the bottom of the moving seat, and the sliding seat is slidably connected to the workbench;

[0008] A first gear, the first gear is fixedly connected to one end of the rotating shaft, and a force - borrowing transmission component for meshing and driving the first gear is arranged on the moving seat and the workbench;

[0009] A linear telescopic driving unit, the linear telescopic driving unit is arranged on the bottom bracket; The linear telescopic driving unit is used to synchronously control the mutual approach or mutual separation movement of the two pairs of sliding seats;

[0010] A support and reset member, the support and reset member is arranged at the bottom of the workbench, and a thimble member is fixedly connected to the support and reset member. The thimble member sequentially passes through the workbench and the bottom die movably;

[0011] A thimble control rod, the thimble control rod is arranged on the linear telescopic driving unit; When the thimble control rod moves upward and contacts the support and reset member, the end of the thimble member passes through the bottom die and extends upward.

[0012] In a preferred embodiment, the fixing plate is connected to the side die by screws.

[0013] In a preferred embodiment, the force - borrowing transmission component includes a pair of second gears rotatably connected to the end side of the moving seat and a rack fixedly connected to the workbench. The pair of second gears are meshed with each other, and one of the second gears is meshed with the first gear, and the other second gear is in contact meshing with the rack.

[0014] In a preferred embodiment, an embedded groove is arranged on the workbench, the rack is fixedly connected to the inner side of the embedded groove, and a gap is reserved between one end of the rack close to the second gear and one end of the inner side of the embedded groove.

[0015] In a preferred embodiment, when the two pairs of side molds are in close contact with the bottom mold, the second gear is disengaged from the rack, and at this time, the fixing plate is vertically arranged at the side position of the moving seat; or, when the two pairs of side molds are away from the bottom mold, the second gear is in meshing contact with the rack, and the fixing plate makes a circular motion around the connection of the rotating shaft until the fixing plate is horizontally arranged at the top position of the moving seat.

[0016] In a preferred embodiment, a chute for the sliding of the sliding seat is provided through the workbench.

[0017] In a preferred embodiment, the linear telescopic driving unit includes a servo motor fixedly connected to the bottom bracket, a precision lead screw fixedly connected to the power output end of the servo motor, a lifting thread seat threadedly connected to the precision lead screw, two pairs of traction pull rods hinged to the lifting thread seat, and a traction seat hinged to the end of the traction pull rod facing away from the lifting thread seat. The traction seat is fixedly connected to the sliding seat, and the precision lead screw is rotatably connected to the bottom bracket.

[0018] In a preferred embodiment, the support and reset member includes a pair of T-shaped sliding rods fixedly connected to the bottom of the workbench, a support tray slidably connected to the pair of T-shaped sliding rods, and a reset spring sleeved on each T-shaped sliding rod. The thimble member is fixedly connected to the support tray.

[0019] In a preferred embodiment, the thimble control rod is fixedly connected to the lifting thread seat, and the thimble control rod is in movable contact with the bottom of the support tray. When the two pairs of side molds are in close contact with the bottom mold, a delay spacing is reserved between the thimble control rod and the support tray.

[0020] In a preferred embodiment, a hydraulic device for driving the lifting movement of the top mold is provided on the hanging frame.

[0021] The technical effects and advantages of the present utility model:

[0022] 1. For a gravity die of an automobile wheel hub of the present utility model, by utilizing the slidability of the sliding seat on the workbench, the rotating traction structure can drive the side mold to move towards or away from the bottom mold. Since the linear telescopic driving unit can provide linear reciprocating power for multiple sliding seats, the two pairs of side molds can synchronously achieve rapid movement of opening and closing the mold on the bottom mold. Therefore, by quickly realizing the opening and closing of the side mold, it can provide assistance for the subsequent demolding of the automobile wheel hub and meet the convenience of demolding.

[0023] 2. A gravity die for an automotive wheel hub of the present utility model utilizes the linear mobility of the side die. When the side die is demolded and moves away from the bottom die, due to the engagement of a pair of second gears with the first gear and the rack respectively, and the rotational connection between the fixing plate and the moving seat, the side die can achieve different angular changes at different positions. The usage states brought about by the angular changes are divided into the vertical state of mold closing and the horizontal state of mold opening and cleaning. Therefore, for the purpose of adjusting the angle of the side die after mold opening, by effectively exposing the cleaning surface of the side die, it can provide convenience for cleaning the inner wall of the side die.

[0024] 3. A gravity die for an automotive wheel hub of the present utility model utilizes the lifting property of the lifting screw seat on the precision screw rod, and the supporting and resetting capabilities provided by the supporting and resetting member for the ejector pin member. In this way, after the side die is demolded from the automotive wheel hub, the ejector pin control rod can adaptively move upward to push the ejector pin member upward, which is convenient for ejecting and demolding the automotive wheel hub from the bottom die and reducing the difficulty of removing the wheel hub during mold opening. Therefore, by successively releasing the restrictions on the circumferential surface and bottom surface of the automotive wheel hub by the side die and the ejector pin member, the efficiency and quality of demolding the automotive wheel hub can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a gravity die for an automotive wheel hub of the present utility model.

[0026] Figure 2 It is a schematic diagram of the structure of the wheel hub gravity die module of a gravity die for an automotive wheel hub of the present utility model.

[0027] Figure 3 It is a gravity die for an automotive wheel hub of the present utility model Figure 1 without the structure of the suspension bracket.

[0028] Figure 4 It is a gravity die for an automotive wheel hub of the present utility model Figure 3 bottom view.

[0029] Figure 5 It is a schematic diagram of the structure of the rotational traction structure and the force - borrowing transmission component of a gravity die for an automotive wheel hub of the present utility model.

[0030] Figure 6 It is a schematic diagram of the structure of the bottom bracket, the linear telescopic drive unit and the supporting and resetting member of a gravity die for an automotive wheel hub of the present utility model.

[0031] Figure 7 It is a schematic diagram of the structure of the supporting and resetting member and the ejector pin member of a gravity die for an automotive wheel hub of the present utility model.

[0032] The reference numerals are: 1, bottom bracket; 2, workbench; 3, hanging bracket; 31, hydraulic device; 4, wheel hub gravity die module; 41, bottom die; 42, side die; 43, top die; 5, rotating traction structure; 51, fixed plate; 52, moving seat; 53, rotating seat; 54, rotating shaft; 6, gear one; 7, force - borrowing transmission component; 71, gear two; 72, rack; 8, sliding seat; 9, linear telescopic drive unit; 91, servo motor; 92, precision lead screw; 93, lifting screw seat; 94, traction pull rod; 95, traction seat; 10, support and reset component; 101, T - shaped slide bar; 102, support pallet; 104, reset spring; 11, ejector pin component; 12, ejector pin control rod; 13, chute; 14, embedded groove. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] The present invention provides an automotive wheel hub gravity die. With reference to Figures 1-3 , it includes a bottom bracket 1. A workbench 2 is arranged on the bottom bracket 1. A hanging bracket 3 is arranged on the workbench 2. A wheel hub gravity die module 4 is arranged on the workbench 2. The wheel hub gravity die module 4 includes a bottom die 41 fixedly connected to the upper surface of the workbench 2, two pairs of side dies 42 arranged outside the bottom die 41, and a top die 43 arranged above the bottom die 41.

[0035] A hydraulic device 31 for driving the lifting movement of the top die 43 is arranged on the hanging bracket 3. The hydraulic device 31 can be used to drive the top die 43 to be combined with the side dies 42 and the bottom die 41. In this way, by pouring molten aluminum into the cavity formed between the top die 43, the side dies 42 and the bottom die 41, an automotive wheel hub can be formed according to the design of the structures inside the top die 43, the side dies 42 and the bottom die 41.

[0036] The above - mentioned automotive wheel hub gravity die further includes a rotating traction structure 5, a gear one 6, a linear telescopic drive unit 9, a support and reset component 10, and an ejector pin control rod 12.

[0037] With reference to Figure 5, the rotating traction structure 5 is arranged on one side of the side mold 42, and the number of the rotating traction structures 5 is two groups; each rotating traction structure 5 includes a fixing plate 51 detachably connected to the outer side surface of the side mold 42, a moving seat 52 arranged on one side of the fixing plate 51, a pair of rotating seats 53 fixedly connected to the moving seat 52, and a rotating shaft 54 arranged on the pair of rotating seats 53. The fixing plate 51 is rotatably connected to the rotating seat 53 through the rotating shaft 54. A sliding seat 8 is fixedly connected to the bottom of the moving seat 52, and the sliding seat 8 is slidably connected to the workbench 2. In this application, since the fixing plate 51 is connected to the side mold 42, the side mold 42 can be rotatably connected to the side of the moving seat 52. By reasonably setting the connection position of the rotating shaft 54, the side surface 41 can be ensured to switch positions on the side or top surface of the moving seat 52 through the fixing plate 51.

[0038] The fixing plate 51 is connected to the side mold 42 by screws, and the fixing plate 51 is connected to the side mold 42 by screws, which provides convenience for the disassembly of the side mold 42 for maintenance or replacement.

[0039] A sliding groove 13 for the sliding of the sliding seat 8 is arranged through the workbench 2. In this application, the sliding seat 8 can be arranged in an I shape, and the sliding groove 13 can be designed according to the shape of the sliding seat 8, so that the sliding seat 8 can achieve an anti-deviation sliding effect in the sliding groove 13.

[0040] A first gear 6 is fixedly connected to one end of the rotating shaft 54, and the number of the first gears 6 can be twice the number of the rotating shafts 54. A force-assisted transmission component 7 for meshing and driving the first gear 6 is arranged on the moving seat 52 and the workbench 2.

[0041] The force-assisted transmission component 7 includes a pair of second gears 71 rotatably connected to the end side of the moving seat 52 and a rack 72 fixedly connected to the workbench 2. The pair of second gears 71 are meshed and connected to each other, and one of the second gears 71 is meshed and connected to the first gear 6, and the other second gear 71 is in contact and meshed with the rack 72.

[0042] Specifically, since the sliding seat 8 can enable the moving seat 52 to move linearly on the workbench 2, when the moving seat 52 moves, one of the second gears 71 can first contact the tooth groove of the rack 72, so that the second gear 71 can rotate adaptively. Also, because the pair of second gears 71 and the first gear 6 are sequentially meshed and connected, the first gear 6 can drive the side mold 42 to perform a circular motion around the connection of the rotating shaft 54 on the side of the moving seat 52. Since the rotation directions of the lowermost second gear 71 and the first gear 6 are the same, when the side mold 42 moves away from the bottom mold 41 to open and close, the side mold 42 can expand its inner surface outwards. By providing a favorable spatial position for the side mold 42, convenience for cleaning the inner side of the side mold 42 can be provided.

[0043] Continue to refer to Figure 2, an embedded groove 14 is provided on the workbench 2, and the rack 72 is fixedly connected to the inner side of the embedded groove 14. A gap is reserved between one end of the rack 72 close to the second gear 71 and one end of the inner side of the embedded groove 14. The setting of the embedded groove 14 enables the rack 72 to be hidden in the workbench 2, which can avoid affecting the lateral movement of the moving seat 52 on the workbench 2; in addition, due to the different length designs of the embedded groove 14 and the rack 72, when the side mold 42 is closed on the bottom mold 41, the second gear 71 located at the bottom can be arranged in the embedded groove 14 and does not contact the rack 72 at the same time. In this way, the side mold 42 can be stably arranged vertically on one side of the moving seat 52 to provide an effective pouring area for the casting of the automotive wheel hub.

[0044] When the two pairs of side molds 42 are in close contact with the bottom mold 41, the second gear 71 is disengaged from the rack 72. At this time, the fixing plate 51 is arranged vertically on the side position of the moving seat 52; or, when the two pairs of side molds 42 are away from the bottom mold 41, the second gear 71 is in meshing contact with the rack 72, and the fixing plate 51 makes a circular motion around the connection of the rotating shaft 54 until the fixing plate 51 is arranged horizontally on the top position of the moving seat 52.

[0045] Refer to in combination Figure 4 、 Figure 6 , the linear telescopic drive unit 9 is arranged on the bottom bracket 1; the linear telescopic drive unit 9 is used to synchronously control the movement of the two pairs of sliding seats 8 approaching or moving away from each other; the linear telescopic drive unit 9 includes a servo motor 91 fixedly connected to the bottom bracket 1, a precision lead screw 92 fixedly connected to the power output end of the servo motor 91, a lifting thread seat 93 threadedly connected to the precision lead screw 92, two pairs of traction pull rods 94 hinged to the lifting thread seat 93, and a traction seat 95 hinged to one end of the traction pull rod 94 facing away from the lifting thread seat 93. The traction seat 95 is fixedly connected to the sliding seat 8, and the precision lead screw 92 is rotatably connected to the bottom bracket 1.

[0046] Specifically, the forward and reverse driving of the servo motor 91 is controlled by an external drive controller. When the servo motor 91 drives the precision lead screw 92 to rotate forward, the lifting thread seat 93 can move up and down on the precision lead screw 92 until the traction pull rod 94 rotates adaptively, so as to drive the sliding seat 8 to move linearly in the sliding groove 13 through the traction seat 95 and move towards the position facing the bottom mold 41. In this way, the two pairs of side molds 42 can be closed on the bottom mold 41, making the synchronous control of the mold closing and mold opening of the side mold 42 relatively simple. Finally, the top mold 43 can be driven to lift by the hydraulic device 31 to cooperate with the space surrounded by the side mold 42 and the bottom mold 41, so as to facilitate the casting of the automotive wheel hub.

[0047] Refer to in combination Figure 7, The support and reset member 10 is disposed at the bottom of the workbench 2. A thimble member 11 is fixedly connected to the support and reset member 10. The thimble member 11 can eject the automobile wheel hub on the bottom die 41 for demolding, so as to cooperate with the subsequent manipulator to transfer the position of the automobile wheel hub. The thimble member 11 sequentially passes through the workbench 2 and the bottom die 41 movably. The support and reset member 10 includes a pair of T-shaped slide bars 101 fixedly connected to the bottom of the workbench 2, a support tray 102 slidably connected to the pair of T-shaped slide bars 101, and a return spring 104 sleeved on each T-shaped slide bar 101. The thimble member 11 is fixedly connected to the support tray 102. The support tray 102 can be conveniently limited and slid on the path of the T-shaped slide bar 101. Under the spring tension provided by the return spring 104 for the support tray 102, the pressure on the support tray 102 can be relieved to facilitate position resetting.

[0048] The thimble control rod 12 is disposed on the linear telescopic drive unit 9; when the thimble control rod 12 moves upward and contacts the support and reset member 10, the end of the thimble member 11 passes through the bottom die 41 and extends upward. The thimble control rod 12 is fixedly connected to the lifting screw base 93. The thimble control rod 12 is in movable contact with the bottom of the support tray 102. When the two pairs of side dies 42 are in close contact with the bottom die 41, a delay spacing is reserved between the thimble control rod 12 and the support tray 102. The setting of the delay spacing enables the thimble member 11 to eject and demold the bottom of the automobile wheel hub after the side die 42 separates from the surface of the automobile wheel hub, thus avoiding damage to the automobile wheel hub caused by ejection.

[0049] Specifically, when the servo motor 91 drives the precision lead screw 92 to rotate, at this time, the lifting screw base 93 can push the slide seat 8 to move away from the bottom die 41 through the traction pull rod 94. At the same time, the thimble control rod 12 moves upward until the side die 42 separates from the bottom die 41 to expose the outer surface of the automobile wheel hub. When the side die 42 is far from the outer surface of the automobile wheel hub, the thimble control rod 12 on the lifting screw base 93 can abut against the top of the support tray 102 and squeeze upward. In this way, the support tray 102 can drive the thimble member 11 to sequentially pass through the workbench 2 and the bottom die 41, and the end of the thimble member 11 can act on the bottom surface of the automobile wheel hub, so that the automobile wheel hub can be separated from the bottom die 41 and lifted upward. In this way, the ejected automobile wheel hub can be transferred by an external manipulator. During this process, the side die 42 is in an everted state, which is convenient for removing slag and cleaning the inner surface of the side die 42. And because the side dies 42 are all far from the bottom die 41, this also provides an effective space for cleaning the bottom die 41. Therefore, by the side die 41 and the thimble member 11 to successively release the limitation on the annular surface and the bottom surface of the automobile wheel hub, the demolding efficiency and quality of the automobile wheel hub can be improved.

[0050] It should be noted that when the side mold 42 is cleaned and used for mold closing on the bottom mold 41, at this time, the ejector pin control rod 12 can be disengaged from the support pallet 102, so that under the elastic reset of the reset spring 104, the ejector pin member 11 can be stably hidden inside the bottom mold 41 for subsequent continuous ejection.

Claims

1. An automobile wheel hub gravity mold, comprising a bottom bracket (1), a workbench (2) being arranged on the bottom bracket (1), a hanger (3) being arranged on the workbench (2), and a wheel hub gravity mold module (4) being arranged on the workbench (2), characterized in that: The wheel hub gravity mold module (4) comprises a bottom mold (41) fixedly connected to the upper surface of the workbench (2), two pairs of side molds (42) arranged outside the bottom mold (41), and a top mold (43) arranged above the bottom mold (41); A rotating traction structure (5), wherein the rotating traction structure (5) is arranged on one side of the side mold (42), and the number of the rotating traction structures (5) is two groups; each rotating traction structure (5) comprises a fixed plate (51) detachably connected to the outer side surface of the side mold (42), a movable seat (52) arranged on one side of the fixed plate (51), a pair of rotating seats (53) fixedly connected to the movable seat (52), and a rotating shaft (54) arranged on the pair of rotating seats (53); the fixed plate (51) is rotatably connected to the rotating seat (53) via the rotating shaft (54); a sliding seat (8) is fixedly connected to the bottom of the movable seat (52), and the sliding seat (8) is slidably connected to the workbench (2); Gear 1 (6), the gear 1 (6) is fixedly connected to one end of the rotating shaft (54), and a lever transmission assembly (7) for meshing with the transmission gear 1 (6) is provided on the movable seat (52) and the workbench (2); A linear telescopic drive unit (9), wherein the linear telescopic drive unit (9) is arranged on the bottom bracket (1); the linear telescopic drive unit (9) is used for synchronously controlling the two pairs of slide seats (8) to move toward or away from each other; A support reset member (10), the support reset member (10) being arranged at the bottom of the workbench (2), the support reset member (10) being fixedly connected to an ejector member (11), the ejector member (11) being movably passed through the workbench (2) and the bottom mold (41) in sequence; An ejector control rod (12), wherein the ejector control rod (12) is arranged on the linear telescopic drive unit (9); when the ejector control rod (12) moves upward and contacts the supporting reset member (10), the end of the ejector member (11) passes through the bottom mold (41) and extends upward.

2. The automobile wheel hub gravity mold according to claim 1, characterized in that: The fixing plate (51) is connected to the side mold (42) via screws.

3. The automobile wheel hub gravity mold according to claim 1, characterized in that: The lever transmission assembly (7) comprises a pair of gears (71) rotatably connected to the end side of the moving seat (52) and a rack (72) fixedly connected to the workbench (2), the pair of gears (71) being meshed with each other, one of the gears (71) being meshed with the gear (6), and the other gear (71) being in contact and meshing engagement with the rack (72).

4. The automobile wheel hub gravity mold according to claim 3, characterized in that: An embedded groove (14) is provided on the workbench (2), the rack (72) is fixedly connected to the inner side of the embedded groove (14), and a gap is reserved between one end of the rack (72) close to the second gear (71) and one end inside the embedded groove (14).

5. The automobile wheel hub gravity mold according to claim 3, characterized in that: When the two pairs of side molds (42) are in close contact with the bottom mold (41), the second gear (71) is out of contact with the rack (72), and at this time, the fixed plate (51) is vertically arranged at the side position of the movable seat (52); Alternatively, when the two pairs of side molds (42) are away from the bottom mold (41), the gear 2 (71) is in meshing contact with the rack (72), and the fixed plate (51) performs a circular motion around the connection of the rotating shaft (54) until the fixed plate (51) is horizontally arranged at the top position of the movable seat (52).

6. The automobile wheel hub gravity mold according to claim 1, characterized in that: The workbench (2) is provided with a sliding groove (13) for the sliding seat (8) to slide.

7. The automobile wheel hub gravity mold according to claim 1, characterized in that: The linear telescopic drive unit (9) comprises a servo motor (91) fixedly connected to the bottom bracket (1), a precision screw (92) fixedly connected to the power output end of the servo motor (91), a lifting threaded seat (93) threadedly connected to the precision screw (92), two pairs of traction rods (94) hinged on the lifting threaded seat (93), and a traction seat (95) hinged on one end of the traction rod (94) facing away from the lifting threaded seat (93), the traction seat (95) is fixedly connected to the slide seat (8), and the precision screw (92) is rotatably connected to the bottom bracket (1).

8. The automobile wheel hub gravity mold according to claim 7, characterized in that: The support reset member (10) comprises a pair of T-shaped sliding bars (101) fixedly connected to the bottom of the workbench (2), a support plate (102) slidably connected to the pair of T-shaped sliding bars (101), and a reset spring (104) sleeved on each T-shaped sliding bar (101), and the ejector member (11) is fixedly connected to the support plate (102).

9. The automobile wheel hub gravity mold according to claim 8, characterized in that: The ejector control rod (12) is fixedly connected to the lifting threaded seat (93), and the ejector control rod (12) is in active contact with the bottom of the support plate (102). When the two pairs of side molds (42) are in close contact with the bottom mold (41), a delay spacing is reserved between the ejector control rod (12) and the support plate (102).

10. The automobile wheel hub gravity mold according to claim 1, characterized in that: The hanger (3) is provided with a hydraulic device (31) for driving the top mold (43) to move up and down.

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