A hub and a hub die-casting production device

Abstract

This invention discloses a wheel hub and a wheel hub die-casting production apparatus, belonging to the field of wheel hub casting. The wheel hub die-casting production apparatus includes a lower plate, a lower mold frame installed in the middle of the lower plate, two symmetrically arranged side mold frames slidably connected to the upper end of the lower plate in a left-right direction, and an upper mold frame slidably connected to the lower mold frame in a longitudinal direction. The lower mold frame includes a lower frame body disposed on the lower plate and a lower mold slidably connected to the lower frame body in a longitudinal direction; the upper end of the lower frame body is provided with multiple coaxially arranged lower frame body flow channels with upper side openings. Lower ventilation mechanisms are respectively provided on the left and right sides of the lower frame body; the lower ventilation mechanism includes multiple lower distribution grooves arranged horizontally on the lower frame body in a longitudinal direction through which cold air passes. When the lower mold abuts against the lower frame body, the cold air passing through the lower distribution grooves cools the lower mold; after the lower mold separates from the lower frame body, the cold air passing through the lower distribution grooves acts on the surface of the upper mold frame.

Description

Technical Field

[0001] This invention belongs to the field of wheel hub casting, and more specifically, relates to a wheel hub and a wheel hub die casting production apparatus. Background Technology

[0002] Patent CN105149551B discloses a low-pressure casting mold and a method for casting wheel hubs. The low-pressure casting mold includes a lower mold, multiple side molds, an upper mold, and a control device. The multiple side molds cooperate with the lower mold to form a rim cavity and a runner cavity corresponding to the rim of the wheel hub to be cast. The upper mold cooperates with the lower mold and the side molds to form a spoke cavity corresponding to the spokes of the wheel hub to be cast and a mounting cavity corresponding to the mounting plate. There is also an upper rim cavity corresponding to the upper lip of the wheel hub to be cast. Two sprue openings are provided on the bottom plate. The runner cavity, upper rim cavity, spoke cavity, rim cavity, and mounting cavity are interconnected to form the wheel hub cavity to be cast, which is connected to the two sprue openings. The low-pressure casting mold provided by this invention allows for upward casting from two sprue openings, shortening the filling time, improving stability, and using low-pressure casting instead of forging to obtain spun blanks. Compared with forging equipment, it offers higher precision, lower cost, improved mechanical properties of the product, reduced production costs, and enhances market competitiveness.

[0003] In the aforementioned patent, the cooling process of the wheel hub is relatively slow, which increases the casting time and affects production efficiency. Furthermore, after the mold has been used for a long time, dust, iron filings, and other foreign objects will adhere to the mold surface. If these foreign objects are not cleaned, they will adhere to the surface of the wheel hub and affect its quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wheel hub and a wheel hub die casting production device, which can accelerate the cooling process and clean the mold surface.

[0005] The present invention provides a wheel hub die-casting production apparatus, comprising a lower plate, a lower mold frame installed in the middle of the lower plate, two symmetrically arranged side mold frames slidably connected to the upper end of the lower plate in the left-right direction, and an upper mold frame slidably connected to the lower mold frame in the longitudinal direction above the lower mold frame.

[0006] The lower mold frame includes a lower frame body disposed on the lower plate and a lower mold that is longitudinally slidably connected above the lower frame body; the upper end of the lower frame body is provided with a plurality of coaxially arranged upper opening lower frame body flow channels.

[0007] The lower frame is provided with a lower ventilation mechanism on the left and right sides respectively; the lower ventilation mechanism includes a plurality of lower diversion slots arranged horizontally on the lower frame and arranged longitudinally for the passage of cold air.

[0008] When the lower mold is in contact with the lower frame, the cold air passing through the lower flow channel cools the lower mold; after the lower mold separates from the lower frame, the cold air passing through the lower flow channel acts on the surface of the upper mold frame.

[0009] As a further improvement of the present invention, a riser pipe extending to the lower plate is provided in the middle of the lower frame; a through connecting pipe communicating with the riser pipe is provided in the middle of the lower mold; a furnace for holding alloy solution is provided below the lower plate; and the riser pipe extends into the furnace.

[0010] As a further improvement of the present invention, the upper mold includes an upper frame and an upper mold detachably connected to the outer periphery of the upper frame; an upper ventilation mechanism is respectively provided on the left and right sides of the upper frame; the upper ventilation mechanism includes a plurality of longitudinal diversion grooves arranged vertically on the side wall of the upper frame and distributed in the left and right directions, and a plurality of transverse diversion grooves arranged in the left and right directions on the lower part of the upper frame and distributed in the vertical direction.

[0011] As a further improvement of the present invention, the upper ventilation mechanism further includes longitudinal connecting grooves that are longitudinally distributed on the upper frame and connect the various longitudinal diversion grooves; a longitudinal ventilation pipe is provided on the upper part of the side wall of the longitudinal connecting groove above each longitudinal diversion groove; the cross-section of the longitudinal connecting groove in the horizontal direction is non-circular; and an upper sealing block is longitudinally slidably connected in the longitudinal connecting groove.

[0012] The upper end of the longitudinal connecting groove is rotatably connected to an upper screw that drives the upper sealing block to move up and down; the upper frame is fixedly connected to an upper screw motor whose output shaft is fixedly connected to the upper screw.

[0013] The upper frame has two upper insert plates that slide along the front-to-back direction; the two upper insert plates are located on the front and back sides of the longitudinal connecting groove, respectively.

[0014] The upper mold is provided with an upper insertion hole arranged in the front-to-back direction, which can be inserted into the upper insertion plate to fix the upper mold relative to the upper frame; when the upper frame and the upper mold are in contact, the upper insertion plate and the upper insertion hole are directly opposite each other.

[0015] An upper plate is provided above the lower plate and above the upper mold frame; a positioning plug is provided at the upper end of the upper plate along the left and right direction; a positioning plug is provided at the lower end of the upper plate that can be inserted into the positioning plug to fix the upper frame to the lower end of the upper plate.

[0016] When the upper mold frame moves to the upper limit position, the upper end of the positioning plate and the lower end of the positioning plug are on the same horizontal plane.

[0017] The upper insert plate extends into the longitudinal connecting groove on the side near the middle of the upper frame; the upper insert plate is provided with an inclined upper slope at the position inside the longitudinal connecting groove; the upper end of the upper sealing block is provided with an upper insert post that can abut against the upper slope and drive the upper insert plate to move; an upper insert plate spring is provided between the upper insert plate and the upper frame to drive the upper insert plate to move away from the center of the upper frame.

[0018] As a further improvement of the present invention, the side mold includes a side frame and a side mold detachably connected to the side of the side frame near the center of the upper plate; the side frame is provided with a plurality of side diversion grooves arranged longitudinally and arranged in the left-right direction.

[0019] When the side frame comes into contact with the side mold, the side mold is cooled by the cold air through the side flow channel; when the side frame separates from the side mold, the cold air through the side flow channel acts on the surface of the upper mold frame.

[0020] As a further improvement of the present invention, the side frame is provided with longitudinally distributed side connecting grooves that connect each side diversion groove; a side ventilation pipe is provided on the upper part of the side wall of the side connecting groove above each side diversion groove; the cross-section of the side connecting groove in the horizontal direction is non-circular; a side sealing block is slidably connected in the side connecting groove in the longitudinal direction.

[0021] The upper end of the side connecting groove is rotatably connected to a side screw that drives the side sealing block to move up and down; the side frame is fixedly connected to a side screw motor whose output shaft is fixedly connected to the side screw.

[0022] Two side insert plates are slidably connected to the side frame in the front-to-back direction; the two side insert plates are located on the front and back sides of the side connecting groove respectively; the side insert plates are provided with side plugs distributed in the front-to-back direction; the side mold is provided with side insertion holes arranged in the front-to-back direction that can be inserted into the side plugs to fix the side mold and the side frame relatively; when the side frame and the side mold are in contact, the side plugs and the side insertion holes are facing each other.

[0023] The side insert plate extends into the side connecting groove on one side near the middle of the side frame; the side insert plate is provided with inclined side slopes at the position inside the side connecting groove; the upper end of the side sealing block is provided with a side insert post that can abut against the side slopes and drive the side insert plate to move; a side insert plate spring is provided between the side insert plate and the side frame to drive the side insert plate to move away from the center of the side frame.

[0024] As a further improvement of the present invention, a lifting mechanism for driving the movement of the lower mold is installed on the lower plate; the lifting mechanism includes a positioning ring longitudinally arranged on a rotating shaft rotatably connected to the middle of the upper end of the lower plate, and a lifting screw longitudinally arranged on a rotating shaft rotatably connected to the positioning ring at an eccentric position; a threaded sleeve is provided on the lower mold for threaded transmission connection with the lifting screw.

[0025] The lifting screw has a lifting gear coaxially arranged on its outer wall; the lifting mechanism also includes an internal gear that meshes with the lifting gear and is coaxially arranged with the positioning ring.

[0026] As a further improvement of the present invention, a translation slide plate is slidably connected to the lower plate along the left-right direction; a lifting screw for driving the upper mold to move up and down is rotatably connected to the upper end of the translation slide plate.

[0027] A lifting rack distributed in the left-right direction is longitudinally slidably connected to the lower plate near the lifting screw; a lifting gear capable of meshing with the lifting rack is coaxially arranged on the outer wall of the lifting screw.

[0028] As a further improvement of the present invention, a lifting sleeve is drivenly connected to the lifting screw; the lifting sleeve is rotatably connected to the upper mold; and a separation opening is provided on the outer periphery of the upper end of the upper mold, which can be inserted into the lifting screw.

[0029] When the upper mold and the lower mold are directly opposite each other in the vertical direction, the lifting screw is located in the separation opening. At this time, the internal gear drives the lifting screw to rotate along the axis of the internal gear, and the lifting screw drives the upper mold to rotate synchronously through the separation opening.

[0030] As a further improvement of the present invention, the lower ventilation mechanism further includes a lower connecting groove disposed on the lower frame body that connects each of the lower diversion grooves in a lower ventilation mechanism, a lower ventilation pipe disposed at the lower end of the lower frame body that communicates with the lower connecting groove, and a lower sealing plate that is slidably connected in the lower connecting groove in the front-back direction.

[0031] The lower sealing plate has an inclined baffle block near the lower diversion groove at one end for closing the lower diversion groove.

[0032] The lower sealing plate is provided with a lower pressure plate for driving the lifting rack to move, located below the lower frame.

[0033] A wheel hub, manufactured using the aforementioned wheel hub die-casting production apparatus, the wheel hub comprising a rim and spokes; the spokes being composed of multiple straight spokes interlaced.

[0034] As a further improvement of the present invention, the hub further includes an inner rim and an outer rim; the cooling sequence of the hub is, in order, the inner rim, the outer rim, the outer circumference of the spokes, and the inner circumference of the spokes.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows: the cool air blown out by each side flow channel, longitudinal flow channel, transverse flow channel and lower flow channel in this solution can not only accelerate the cooling of the wheel hub, but also act on the side model surface, upper model surface and lower model surface to clean them.

[0036] This solution changes the position of the cooling air on the wheel hub by controlling the movement of the side sealing block, upper sealing block, rotating sealing body, and lower sealing plate, so that the wheel hub is cooled in the order of inner rim, rim, outer rim, outer circumference of spokes, and inner circumference of spokes, thereby achieving uniform cooling of the wheel hub.

[0037] In this solution, by controlling the movement of the side sealing block, the side sealing block can both change the position of the side diversion groove for cooling air and drive the side insert plate to move, thereby controlling the fixed relationship between the side mold and the side frame.

[0038] This solution controls the movement of the upper sealing block, enabling it to change the position of the longitudinal flow channel for cooling air and drive the upper insert block to move, thus fixing the upper frame onto the upper mold or upper plate.

[0039] This solution controls the sliding of the lower sealing plate, allowing it to change the position of the lower distribution groove for cooling air and also control the movement of the lifting rack, so that the lifting screw can drive the upper mold to move up and down as well as left and right.

[0040] This solution controls the rotation of the internal gear, allowing it to both drive the lifting screw to rotate, causing the lower mold to move up and down, and also drive the internal gear axis of the lifting screw sleeve to revolve, causing the lower and upper molds to rotate together, allowing the cold air to clean them more thoroughly. Attached Figure Description

[0041] Figure 1 , Figure 2 This is a schematic diagram of the structure of the hub of the present invention; Figure 3 This is a schematic diagram of the structure in the initial state of the present invention; Figure 4 This is a schematic diagram of the structure of the wheel hub during the casting process of this invention.

[0042] Figure 5 This is an exploded structural diagram of the side mold frame of the present invention.

[0043] Figure 6 This is a cross-sectional view of the side mold frame of the present invention.

[0044] Figure 7 This is a schematic diagram of the side sealing block and side insert plate structure of the present invention.

[0045] Figure 8 This is an exploded structural diagram of the upper mold frame of the present invention.

[0046] Figure 9 This is a cross-sectional view of the upper mold frame of the present invention.

[0047] Figure 10 This is a schematic diagram of the upper sealing block and the upper insert plate of the present invention.

[0048] Figure 11 This is a schematic diagram of the structure of the upper frame and the rotating sealing body of the present invention.

[0049] Figure 12 This is a schematic diagram of the lower frame of the present invention.

[0050] Figure 13 This is a schematic diagram of the lifting mechanism of the present invention.

[0051] Figure 14 This is a cross-sectional view of the lower mold frame of the present invention.

[0052] Figure 15 This is a schematic diagram of the installation structure of the lower sealing plate of the present invention.

[0053] Figure 16 This is a schematic diagram of the structure of the present invention when the mold is located on the left side.

[0054] Figure 17 This is a schematic diagram of the structure when the lower pressure plate and the rack pressure bar of the present invention are separated.

[0055] Figure 18 This is a schematic diagram of the structure during cleaning according to the present invention.

[0056] Figure 19 This is a schematic diagram of the structure of the present invention when the lower pressure plate moves the rack pressure bar to the upper limit position.

[0057] Figure 20 , Figure 21 This is a cross-sectional view of the structure during cleaning according to the present invention.

[0058] Explanation of the labels in the diagram: 1. Hub; 11. Inner rim; 12. Rim; 13. Outer rim; 14. Spoke; 21. Lower plate; 22. Upper plate; 221. Positioning insert plate; 23. Push rod; 24. Furnace chamber; 3. Side mold frame; 30. Side flow channel; 31. Side mold; 311. Side mold surface; 312. Side mold flow channel; 313. Side insertion hole; 32. Side frame; 321. Side frame flow channel; 322. Side ventilation pipe; 323. Side connecting groove; 324. Side diversion groove; 33. Side insert plate; 331. Side plug; 332. 34. Side inclined surface; 35. Side screw motor; 36. Side screw; 37. Side sealing block; 38. Side insert post; 48. Upper mold frame; 401. Upper longitudinal flow channel; 402. Upper transverse flow channel; 41. Upper mold; 411. Upper mold surface; 412. Upper mold flow channel; 413. Upper insertion hole; 414. Separation opening; 42. Upper frame; 421. Upper frame flow channel; 422. Longitudinal flow divider; 423. Longitudinal ventilation pipe; 424. Longitudinal connecting groove; 425. Transverse ventilation pipe; 426. Transverse connecting groove; 427. Horizontal 43. Diversion channel; 45. Lifting slide sleeve; 46. Upper insert plate; 47. Positioning plug; 48. Upper inclined surface; 49. Upper screw motor; 40. Upper screw; 41. Upper sealing block; 42. Upper insert post; 43. Rotary motor; 44. Rotary sealing body; 45. Sealing plate; 46. Lower mold frame; 57. Lower flow channel; 58. Lower frame body; 59. Lower frame body flow channel; 50. Lower diversion channel; 51. Lifting pipe; 512. Lower connecting channel; 513. Lower ventilation pipe; 514. Lower mold; 52. Lower model. 522. Lower mold flow channel; 523. Placement plate; 524. Threaded sleeve; 525. Connecting pipe; 53. Lower sealing plate; 531. Lower pressure plate; 532. Inclined stop block; 54. Sealing push rod; 6. Lifting mechanism; 61. Lifting screw; 621. Lifting gear; 62. Internal gear; 63. Positioning ring; 64. Lifting motor; 641. Lifting drive gear; 71. Lifting screw; 711. Lifting gear; 72. Translation slide plate; 73. Lifting screw motor; 74. Lifting rack; 741. Rack pressure rod. Detailed Implementation

[0059] Specific Implementation Example 1: Please refer to... Figure 1-21 A wheel hub die-casting production device includes a lower plate 21, a lower mold frame 5 installed in the middle of the lower plate 21, two symmetrically arranged side mold frames 3 slidably connected to the upper end of the lower plate 21 in the left-right direction, and an upper mold frame 4 slidably connected to the lower mold frame 5 in the longitudinal direction.

[0060] The lower mold frame 5 is provided with multiple coaxially arranged annular lower flow channels 50.

[0061] The lower mold frame 5 includes a lower frame body 51 disposed on the lower plate 21 and a lower mold 52 longitudinally slidably connected above the lower frame body 51; the upper end of the lower frame body 51 is provided with a plurality of coaxially arranged upper side opening lower frame body flow channels 511; the lower end of the lower mold 52 is provided with a plurality of coaxially arranged lower side opening lower mold flow channels 522; when the lower mold 52 abuts against the lower frame body 51, the lower frame body flow channels 511 and the lower mold flow channels 522 form a closed lower flow channel 50.

[0062] The lower frame 51 is provided with a lower ventilation mechanism on the left and right sides respectively; the lower ventilation mechanism includes a plurality of lower diversion slots 512 arranged in the horizontal direction on the lower frame 51, through which cold air passes; for each lower diversion slot 512 in the same lower ventilation mechanism, one lower diversion slot 512 is connected to one lower frame flow channel 511.

[0063] When the lower mold 52 abuts against the lower frame 51, the cold air passing through the lower flow channel 512 cools the lower mold 52; after the lower mold 52 separates from the lower frame 51, the cold air passing through the lower flow channel 521 acts on the surface of the upper mold frame 4.

[0064] The upper end of the lower mold 52 is the lower model surface 521 that contacts the hub 1; each lower flow channel 50 is distributed horizontally and evenly below the lower model surface 521.

[0065] When the lower frame 51 abuts against the lower mold 52, each of the lower flow channels 512 in one of the lower ventilation mechanisms delivers cold air into the lower flow channel 50. The cold air entering the lower flow channel 50 cools the lower mold 52, absorbs the heat of the lower mold 52, and thus accelerates the cooling speed of the wheel hub 1. Then, the cold air in the lower flow channel 50 flows out through each of the lower flow channels 512 in another lower ventilation mechanism, repeating the above process. A continuous stream of cold air enters the lower flow channel 50 to cool the wheel hub 1.

[0066] After the lower frame 51 separates from the lower mold 52, the gas blown out from each lower diversion groove 512 will directly act on the surface of the upper mold 4 to clean the upper mold 4.

[0067] A riser pipe 513 extending to the lower plate 21 is provided in the middle of the lower frame 51; a connecting pipe 525 that communicates with the riser pipe 513 is provided in the middle of the lower mold 52; a furnace chamber 24 for holding alloy solution is provided below the lower plate 21; the riser pipe 513 extends into the furnace chamber 24.

[0068] When the side mold frame 3, upper mold frame 4, and lower mold frame 5 are in close proximity to each other, they will form a closed cavity. At this time, a certain air pressure is applied to the furnace chamber 24. The alloy solution in the furnace chamber 24 will enter the cavity through the riser pipe 513 and the connecting pipe 525 under the action of air pressure and fill the cavity. After the alloy solution in the cavity cools and solidifies, the hub is formed.

[0069] The upper mold 4 includes an upper frame 42 and an upper mold 41 detachably connected to the outer periphery of the upper frame 42; the outer wall and lower end face of the upper mold 41 are upper model surfaces 411 that contact the wheel hub 1; upper ventilation mechanisms are respectively provided on the left and right sides of the upper frame 42; the upper ventilation mechanism includes multiple longitudinal diversion grooves 422 arranged vertically on the side wall of the upper frame 42 and distributed in the left and right directions, and multiple transverse diversion grooves 427 arranged in the left and right directions on the lower part of the upper frame 42 and distributed in the vertical direction.

[0070] When the upper frame 42 abuts against the upper mold 41, the upper mold 41 is cooled by the cold air through the longitudinal flow channel 422 and the transverse flow channel 427; when the upper frame 42 separates from the upper mold 41, the cold air through the longitudinal flow channel 422 and the transverse flow channel 427 acts on the surfaces of the side mold frame 3 and the lower mold frame 5.

[0071] The upper frame 42 has multiple longitudinally arranged, externally open upper frame flow channels 421 on its side wall, and the upper mold 41 has multiple longitudinally arranged, internally open upper mold flow channels 412 on its inner wall; for the same upper ventilation mechanism, a longitudinal flow channel 422 is connected to an upper frame flow channel 421.

[0072] The lower end of the upper frame 42 is provided with a plurality of horizontally arranged, open-bottomed second upper frame flow channels; the bottom of the upper mold 41 is provided with a plurality of horizontally arranged, open-topped second upper mold flow channels; for an upper ventilation mechanism, a transverse flow channel 427 is connected to a second upper frame flow channel.

[0073] When the upper frame 42 abuts against the upper mold 41, an upper frame flow channel 421 and an upper mold flow channel 412 form an annular upper longitudinal flow channel 401, and a second upper frame flow channel and a second upper mold flow channel form an annular upper transverse flow channel 402. At this time, cold air enters the corresponding upper longitudinal flow channel 401 through a longitudinal diversion groove 422 and finally flows out from the longitudinal diversion groove 422 in another upper ventilation mechanism. Cold air enters the corresponding upper transverse flow channel 402 through a transverse diversion groove 427 and finally flows out from the transverse diversion groove 427 in another upper ventilation mechanism. During this process, the cold air cools the upper mold 41.

[0074] The upper ventilation mechanism also includes longitudinal connecting grooves 424 that are longitudinally distributed on the upper frame 42 and connect each longitudinal diversion groove 422; a longitudinal ventilation pipe 423 is provided on the upper part of the side wall of the longitudinal connecting groove 424 above each longitudinal diversion groove 422; the cross-section of the longitudinal connecting groove 424 in the horizontal direction is non-circular; an upper sealing block 47 is longitudinally slidably connected in the longitudinal connecting groove 424.

[0075] When the upper sealing block 47 is located below the longitudinal ventilation pipe 423, the cold air entering from the longitudinal ventilation pipe 423 can only enter the longitudinal diversion groove 422 located above the upper sealing block 47. At this time, by controlling the movement of the upper sealing block 47, the cooling position of the upper mold 41 is changed, allowing different positions of the upper mold 41 to be cooled sequentially.

[0076] When the upper sealing block 47 is located above the longitudinal ventilation duct 423, the cold air entering from the longitudinal ventilation duct 423 can enter each longitudinal diversion slot 422.

[0077] The upper end of the longitudinal connecting groove 424 is rotatably connected to an upper screw 461 that drives the upper sealing block 47 to move up and down; the upper frame 42 is fixedly connected to an upper screw motor 46 whose output shaft is fixedly connected to the upper screw 461.

[0078] Two upper insert plates 45 are slidably connected to the upper frame 42 along the front-to-back direction; the two upper insert plates 45 are located on the front and back sides of the longitudinal connecting groove 424 respectively.

[0079] The upper mold 41 is provided with an upper insertion hole 413 arranged in the front-back direction, which can be inserted into the upper insertion plate 45 to fix the upper mold 41 and the upper frame 42 respectively; when the upper frame 42 abuts against the upper mold 41, the upper insertion plate 45 and the upper insertion hole 413 are directly opposite each other.

[0080] An upper plate 22 is provided above the lower plate 21 and above the upper mold frame 4; a positioning plug 451 distributed in the left and right direction is provided at the upper end of the upper insert plate 45; a positioning insert plate 221 that can be inserted into the positioning plug 451 at the lower end of the upper plate 22, thereby fixing the upper frame 42 to the lower end of the upper plate 22.

[0081] When the upper mold frame 4 moves to the upper limit position, the upper end of the positioning plate 221 and the lower end of the positioning plug 451 are on the same horizontal plane.

[0082] The upper insert plate 45 extends into the longitudinal connecting groove 424 from the side near the middle of the upper frame 42; the upper insert plate 45 is provided with an inclined upper slope 452 at the position inside the longitudinal connecting groove 424; the upper sealing block 47 is provided with an upper insert post 471 at the upper end that can abut against the upper slope 452 and drive the upper insert plate 45 to move; an upper insert plate spring is provided between the upper insert plate 45 and the upper frame 42 to drive the upper insert plate 45 to move away from the center of the upper frame 42.

[0083] When the upper sealing block 47 is located below the longitudinal ventilation pipe 423, the upper insert plate 45 is inserted into the upper insertion hole 413 under the action of the upper insert plate spring, the positioning insert plate 221 is separated from the positioning plug 451, and then the upper mold 41 and the upper frame 42 move synchronously.

[0084] When the upper sealing block 47 is located above the longitudinal ventilation pipe 423 and the upper mold frame 4 is located at the upper limit position, the upper sealing block 47 moves relative to the upper frame 42 to the upper limit position, the upper insert post 471 abuts against the upper inclined surface 452 and causes the upper insert plate 45 to move until the upper insert plate 45 separates from the upper insert hole 413, the positioning insert plate 221 is inserted into the positioning plug 451, at this time the upper frame 42 and the upper plate 22 are relatively fixed, and the upper mold 41 can move freely.

[0085] The upper ventilation mechanism also includes a transverse connecting groove 426 located inside the upper frame 42, which connects the various transverse diversion grooves 427 within the same upper ventilation mechanism, and a transverse ventilation pipe 425 located at the upper end of the upper frame 42 and connected to the transverse connecting groove 426.

[0086] A rotating seal 481 is rotatably connected to the middle of the upper frame 42; two centrally symmetrically distributed sealing plates 4811 are provided on the outer wall of the rotating seal 481; one sealing plate 4811 is sealed and installed in a transverse connecting groove 426 and can seal against each transverse diversion groove 427; a rotary motor 48 that drives the rotating seal 481 to rotate is fixedly connected to the upper end of the upper frame 42.

[0087] When the rotary seal 481 rotates, the sealing plate 4811 sequentially closes or opens the transverse diversion grooves 427 one by one. The cold air flowing from the transverse ventilation pipe 425 can only enter the transverse diversion grooves 427 that are not closed by the sealing plate 4811. By controlling the movement of the sealing plate 4811, the position of the transverse diversion grooves 427 through which the cold air passes is changed, thereby cooling different positions of the upper mold 41 sequentially.

[0088] The side mold 3 includes a side frame 32 and a side mold 31 detachably connected to the side of the side frame 32 near the center of the upper plate 21; the end of the side mold 31 near the center of the upper plate 21 is a side model surface 311 that contacts the wheel hub 1; the side frame 32 is provided with a plurality of side diversion grooves 324 arranged longitudinally and arranged in the left and right directions.

[0089] When the side frame 32 abuts against the side mold 31, the side mold 31 is cooled by the cold air through the side diversion groove 324; when the side frame 32 separates from the side mold 31, the cold air through the side diversion groove 324 acts on the surface of the upper mold frame 4.

[0090] The side frame 32 has multiple longitudinally arranged side frame flow channels 321 at one end near the center of the upper plate 21; the side mold 31 has multiple longitudinally arranged side mold flow channels 312 at one end away from the upper plate 21; a side flow channel 324 is connected to a side frame flow channel 321.

[0091] When the side frame 32 abuts against the side mold 31, the side frame flow channel 321 and the side mold flow channel 312 form a semi-circular side flow channel 30. If the two side mold frames 3 move to their extreme positions, the side flow channels 30 on the two side mold frames 3 will be connected end to end to form a circular side flow channel 30. At this time, the side flow channel 324 on one side mold frame 3 will enter the cold air and flow into the side flow channel 30, and finally leave the side flow channel 30 from the side flow channel 324 on the other side mold frame 3. During this process, the cold air cools the side mold 31.

[0092] When the side frame 32 separates from the side mold 31, the cold air flowing out of each side diversion groove 324 will act on the outer wall of the upper mold 41 to clean the upper mold 41.

[0093] The side frame 32 is provided with longitudinally distributed side connecting grooves 323 that connect each side diversion groove 324; the upper part of the side wall of the side connecting groove 323 is provided with a side ventilation pipe 322 above each side diversion groove 324; the cross-section of the side connecting groove 323 in the horizontal direction is non-circular; a side sealing block 36 is longitudinally slidably connected in the side connecting groove 323.

[0094] When the side sealing block 36 is located below the side ventilation pipe 322, the cold air entering from the side ventilation pipe 322 can only enter the side diversion groove 324 located above the side sealing block 36. At this time, by controlling the movement of the side sealing block 36, the cooling position of the side mold 31 is changed, allowing different positions of the side mold 31 to be cooled in sequence.

[0095] When the side sealing block 36 is located above the side ventilation duct 322, the cold air entering from the side ventilation duct 322 can enter each side diversion groove 324.

[0096] A side screw 35 is rotatably connected to the upper end of the side connecting groove 323 to drive the side sealing block 36 to move up and down; a side screw motor 34 with an output shaft fixedly connected to the side frame 32 is fixedly connected to the side screw 35.

[0097] Two side insert plates 33 are slidably connected to the side frame 32 along the front-back direction; the two side insert plates 33 are located on the front and back sides of the side connecting groove 323 respectively; the side insert plates 33 are provided with side plugs 331 distributed along the front-back direction; the side mold 31 is provided with side insertion holes 313 arranged along the front-back direction, which can be inserted into the side plugs 331 to fix the side mold 31 and the side frame 32 respectively; when the side frame 32 and the side mold 31 abut against each other, the side plugs 331 and the side insertion holes 313 are facing each other.

[0098] The side plate 33 extends into the side connecting groove 323 from the middle of the side frame 32. The side plate 33 is provided with an inclined side slope 332 at the position inside the side connecting groove 323. The upper end of the side sealing block 36 is provided with a side insert post 361 that can abut against the side slope 332 and drive the side plate 33 to move. A side plate spring is provided between the side plate 33 and the side frame 32 to drive the side plate 33 to move away from the center of the side frame 32.

[0099] When the side sealing block 36 is located below the side ventilation pipe 322, the side insert plate 33, under the action of the side insert plate spring, causes the side plug 331 to be inserted into the side insertion hole 313, and then the side mold 31 and the side frame 32 move synchronously.

[0100] When the side sealing block 36 is above the side ventilation pipe 322, the side sealing block 36 moves to the upper limit position, the side insert post 361 abuts against the side inclined surface 332 and causes the side insert plate 33 to move until the side plug 331 separates from the side insert hole 313. At this time, the movement of the side frame 32 will not drive the side mold 31 to move.

[0101] Push rods 23 are respectively provided on the left and right sides of the upper end of the lower plate 21; the output shaft of one push rod 23 is fixedly connected to a side frame 32, and then the side frame 32 is moved by the push rod 23.

[0102] The lower mold 52 is provided with a placement plate 523 for receiving the side mold 31 on its outer periphery; when the side plug 331 is separated from the side insertion hole 313, the side mold 31 is located on the upper end of the placement plate 523, and the up and down movement of the lower mold 52 will drive the left and right side molds 31 to move up and down synchronously.

[0103] A lifting mechanism 6 for driving the movement of the lower mold 52 is installed on the lower plate 21. The lifting mechanism 6 includes a positioning ring 63 rotatably connected to the rotating shaft in the middle of the upper end of the lower plate 21 and a lifting screw 61 rotatably connected to the rotating shaft in the eccentric position on the positioning ring 63 and arranged longitudinally. A threaded sleeve 524 is provided on the lower mold 52 and is threadedly connected to the lifting screw 61.

[0104] There are two positioning rings 63, which are respectively distributed on the upper and lower sides of the lifting screw 61. The upper positioning ring 63 is rotatably connected to the upper plate 22. There are two lifting screws 61, which are symmetrically arranged on the positioning rings 63.

[0105] A lifting gear 621 is coaxially arranged on the outer wall of the lifting screw 61; the lifting mechanism 6 also includes an internal gear 62 that is coaxially arranged with the positioning ring 63 and meshes with the lifting gear 621.

[0106] The outer wall of the internal gear 62 is provided with a lifting connecting gear; a lifting motor 64 is fixedly connected to the upper plate 22; a lifting drive gear 641 that meshes and drives the lifting connecting gear is fixedly connected to the output shaft of the lifting motor 64.

[0107] When the lifting motor 64 drives the internal gear 62 to rotate in the forward direction, the friction between the positioning ring 63 and other parts is relatively large at this time. As a result, the internal gear 62 first drives the lifting screw 61 to rotate through the lifting gear 621, so that the lifting screw 61 only rotates around its own axis. Then the lifting screw 61 drives the lower mold 52 to move upward. After the lower mold 52 moves upward to the upper limit position, the lower mold 52 can no longer move upward. Then the internal gear 62 will drive the lifting screw 61 to rotate synchronously around the axis of the internal gear 62, and the lower mold 52 will also rotate around the axis of the internal gear 62.

[0108] A sliding plate 72 is slidably connected to the lower plate 21 along the left and right direction; a lifting screw 71 for driving the upper mold 41 to move up and down is rotatably connected to the upper end of the sliding plate 72; there are two lifting screws 71, both of which are installed on the sliding plate 72 and are distributed on the front and rear sides of the upper mold frame 4.

[0109] A lifting rack 74, distributed in the left-right direction, is longitudinally slidably connected to the lower plate 21 near the lifting screw 71; a lifting gear 711, which can mesh with the lifting rack 74, is coaxially arranged on the outer wall of the lifting screw 71.

[0110] A lifting screw motor 73 is fixedly connected to the translation slide plate 72; a lifting connecting gear that meshes with the lifting gear 711 is fixedly connected to the output shaft of the lifting screw motor 73.

[0111] When the lifting rack 74 is at its upper limit position, the lifting rack 74 does not mesh with the lifting gear 711. At this time, the lifting screw 71 rotates, which only drives the upper mold 41 to move up and down.

[0112] When the lifting rack 74 is at its lower limit position, it meshes with the lifting gear 711. At this time, the lifting screw 71 rotates, and the lifting gear 711 moves along the lifting rack 74. Consequently, the upper mold 41 moves left and right during its vertical movement. The upper mold 41 can then move to the left, ensuring that the lower mold 52 is not obstructed during its upward movement (e.g., ...). Figure 16 (As shown).

[0113] The lifting screw 71 is connected to a lifting sleeve 43; the lifting sleeve 43 is rotatably connected to the upper mold 41; the upper outer periphery of the upper mold 41 is provided with a separation opening 414 that can be inserted into the lifting screw 61; the separation opening 414 is open at one end in a direction perpendicular to the radius of the upper mold 41.

[0114] When the upper mold 41 and the lower mold 52 are directly opposite each other in the vertical direction, the lifting screw 61 is located in the separation opening 414. At this time, the internal gear 62 drives the lifting screw 61 to rotate along the axis of the internal gear 62, and the lifting screw 61 drives the upper mold 41 to rotate synchronously through the separation opening 414.

[0115] The lower ventilation mechanism also includes a lower connecting groove 514 on the lower frame 51 that connects to each lower diversion groove 512 in the lower ventilation mechanism, a lower ventilation pipe 515 located at the lower end of the lower frame 51 and connected to the lower connecting groove 514, and a lower sealing plate 53 that is slidably connected in the lower connecting groove 514 in the front-to-back direction.

[0116] The lower sealing plate 53 has an inclined stop 532 at one end near the lower diversion groove 512 for closing the lower diversion groove 512; the lower end of the lower frame 51 is fixedly connected to a sealing push rod 54 for driving the two lower sealing plates 53 to move.

[0117] A lower pressure plate 531 for driving the lifting rack 74 to move is provided on the lower sealing plate 53 below the lower frame 51; a rack pressure rod 741 extending to the lower frame 51 is provided at the lower end of the lifting rack 74; the lower pressure plate 531 is inclined and can abut against the rack pressure rod 741 to drive the rack pressure rod 741 to move upward.

[0118] When the sealing plate 53 slides, the inclined blocks 532 will sequentially close or open the lower diversion channel 512.

[0119] When the lower sealing plate 53 slides to the limit position away from the lower diversion groove 512, the inclined block 532 does not close any of the lower diversion grooves 512, and the rack pressure rod 741 abuts against the lower pressure plate 531 and makes the lifting rack 74 located at the upper limit position.

[0120] A wheel hub is manufactured using a wheel hub die-casting production device. The wheel hub 1 includes a rim 12 and spokes 14. The spokes 14 are composed of multiple straight spokes interlaced. Compared with curved spokes, straight spokes have better stability and effectively avoid stress concentration in the spokes 14.

[0121] The hub 1 also includes an inner rim 11 and an outer rim 113; the cooling sequence of the hub 1 is as follows: inner rim 11, rim 12, outer rim 13, outer circumference of spoke 14, and inner circumference of spoke 14, that is, from the position away from the riser pipe 513 to the position where the riser pipe 513 is located, the hub 1 is cooled and solidified step by step.

[0122] In the initial state, the upper mold 41 is fixed relative to the upper frame 42, the upper mold frame 4 is located at the upper limit position, the side mold 31 is fixed relative to the side frame 32, the two side mold frames 3 are located at positions far apart from each other, and the lower frame 51 abuts against the lower mold 52. The lifting rack 74 is located at the upper limit position; the side sealing block 36 is located below the side ventilation pipe 322 and above each side diversion groove 324; the upper sealing block 47 is located below the longitudinal ventilation pipe 423 and above each longitudinal diversion groove 422; the rotating sealing body 481 closes each transverse diversion groove 427.

[0123] During the casting of wheel hub 1, the lifting screw motor 73 operates, the lifting screw 71 rotates, the upper mold frame 4 moves downward to its limit position, the push rod 23 operates, and the two side mold frames 3 move to their respective limit positions, thus forming a closed cavity with the side mold frames 3, upper mold frame 4, and lower mold frame 5. The gas pressure inside the furnace 24 increases, forcing the alloy solution inside the furnace 24 to fill the cavity through the riser pipe 513. Then, the sealing push rod 54 drives the lower sealing plate 53 to move towards the lower distribution groove 512, causing the lower sealing plate 53 to seal each lower distribution groove 512. The wheel hub 1 is then cooled.

[0124] When the side screw motor 34 operates, the measuring screw 35 drives the side sealing block 36 to move downward a certain distance. At this time, the side sealing block 36 moves to the lower end of the uppermost side diversion groove 324. At this time, cold air enters the side connecting groove 323 from the left side ventilation pipe 322 and enters the uppermost side diversion groove 324, and finally flows into the uppermost side flow channel 30. The cold air entering the side flow channel 30 absorbs the heat of the upper part of the side mold 31, and the heat of the inner wheel rim 11 is transferred to the upper part of the side mold 31. Finally, it flows out from the right side diversion groove 324, side connecting groove 323, and side ventilation pipe 322, thereby cooling the outer periphery of the inner wheel rim 11 in this process.

[0125] At the same time, the upper screw motor 46 operates, and the upper screw 461 drives the upper sealing block 47 to move downward a certain distance. At this time, the lower sealing block 47 moves to the lower end of the uppermost longitudinal diversion groove 422. At this time, the cold air enters the longitudinal connecting groove 424 from the right longitudinal ventilation pipe 423 and finally flows into the uppermost upper longitudinal flow channel 401. The cold zone in the upper longitudinal flow channel 401 absorbs the heat of the upper part of the upper mold 41, and the heat of the inner wheel rim 11 is transferred to the upper part of the upper mold 41. The cold air finally flows out from the left longitudinal diversion groove 422, longitudinal connecting groove 424, and longitudinal ventilation pipe 423. In this process, the cold air cools the inner circumference of the inner wheel rim 11.

[0126] At regular intervals, the side sealing block 36 and the upper sealing block 47 move downward a certain distance, so that cold air passes through each side diversion groove 324 and the longitudinal diversion groove 422 from top to bottom. For the wheel hub 1 as a whole, the cold air first cools the inner wheel rim 11, and then gradually cools the wheel rim 12 from the side closer to the inner wheel rim 11 to the side farther away from the inner wheel rim 11.

[0127] The cooling process continues until the side sealing block 36 and the upper sealing block 47 move to their lower limit positions, at which point the outer rim 13 is cooled. Then the spokes 14 are cooled.

[0128] The rotary motor 48 drives the rotary seal 481 to rotate at a certain angle, so that the sealing plate 4811 no longer seals the outermost transverse diversion groove 427 of the upper frame 42. At this time, cold air enters the transverse connecting groove 426 from the left transverse ventilation pipe 425, and then enters the outermost transverse diversion groove 427 and the outermost upper transverse flow channel 402. The cold air absorbs the heat from the outer periphery of the upper mold 41, thereby cooling the outer periphery of the spoke 14. Finally, the cold air flows out from the right transverse ventilation pipe 425.

[0129] At the same time, the sealing push rod 54 drives the lower sealing plate 53 to move a certain distance away from the lower flow channel 512. The lower sealing plate 53 no longer seals the outermost lower flow channel 512. The cold air enters the outermost lower flow channel 512 through the lower ventilation pipe 515 on the right and enters the outermost lower flow channel 50. The cold air absorbs the heat of the outer periphery of the lower mold and cools the outer periphery of the spoke 14. Finally, the cold air flows out from the lower ventilation pipe 515 on the left.

[0130] At regular intervals, the rotating seal 481 rotates at a certain angle, and the lower sealing plate 53 moves a certain distance. As a result, cold air passes through each of the lower diversion grooves 512 and the transverse diversion grooves 427 from the outside to the inside. For the hub 1, the cold air gradually cools the spokes 14 from the outer circumference to the inner circumference.

[0131] Finally, the lower sealing plate 53 moves to its limit position away from the lower diversion groove 512, and the lower pressure plate 531 drives the lifting rack 74 to move to the upper limit position. At this time, the entire hub 1 is cooled. The rotary motor 48 drives the rotary sealing body 481 to rotate in the opposite direction to close each transverse diversion groove 427 again. The side sealing block 36 moves upward to below the side ventilation pipe 322 and above each side diversion groove 324, and the upper sealing block 47 moves upward to below the longitudinal ventilation pipe 423 and above each longitudinal diversion groove 422.

[0132] The side mold frame 3, upper mold frame 4, and lower mold frame 5 are separated from each other and restored to their initial state. The wheel hub 1 is then removed. The above process is repeated to perform low-pressure casting of the wheel hub 1.

[0133] When it is necessary to clean the surfaces of the side mold holder 3, upper mold holder 4, and lower mold holder 5, perform the following operations.

[0134] The upper screw motor 46 drives the upper screw 461 to rotate, causing the upper sealing block 47 to move to the upper limit position. The upper insertion post 471 abuts against the upper inclined surface 452, causing the upper insertion plate 45 to separate from the upper insertion hole 413. At the same time, the positioning plug 451 is inserted into the positioning insertion plate 221, and the upper frame 42 is fixed on the upper plate 22.

[0135] The two side mold holders 3 move to a position close to each other, the side screw motor 34 drives the measuring screw 35 to rotate, the side sealing block 36 moves to the upper limit position, the side insert 361 abuts against the side inclined surface 332 and causes the side plug 331 to separate from the side insert hole 313, and the side mold 31 will stay on the upper end of the placement plate 523. Then the two side mold holders 3 move away from each other.

[0136] The lifting screw motor 73 drives the lifting screw 71 to rotate in the forward direction, causing the lifting sleeve 43 to move the upper mold 41 downward to below the upper frame 42; then the sealing push rod 54 drives the lower sealing plate 53 to move in the direction of the downward diversion groove 512, the lower pressure plate 531 separates from the rack pressure rod 741, the lifting rack 74 moves downward to mesh with the lifting gear 711, the lifting screw 71 continues to rotate in the forward direction, and the upper mold 41 moves downward while moving to the left until the upper mold 41 and the upper frame 42 are not aligned in the vertical direction.

[0137] Next, the lifting motor 64 drives the internal gear 62 to rotate in the forward direction, causing the lifting screw 61 to rotate. The lower mold 52 drives the two side molds 31 to move upward to the upper limit position. At this time, the side model surface 311 of the two side molds 31 is directly opposite the longitudinal diversion groove 422, and the lower model surface 521 is directly opposite the transverse diversion groove 427.

[0138] The lifting screw motor 73 drives the lifting screw 71 to rotate in the opposite direction, causing the upper mold 41 to move upward and to the right side directly below the upper frame 42. At this time, the lower mold 52 is located above the upper mold 41, and the lifting screw 61 is inserted into the separation opening 414. Then, the sealing push rod 54 drives the lower sealing plate 53 to move, causing the lower pressure plate 531 to drive the lifting rack 74 to move upward, and the lifting rack 74 separates from the lifting gear 711. Then, the lifting screw 71 moves forward, and the upper mold 41 moves downward to the lower limit position, with the upper mold surface 411 on the upper mold 41 facing the side flow channel 324 and the lower flow channel 512.

[0139] Next, cold air enters each side ventilation pipe 322, longitudinal ventilation pipe 423, transverse ventilation pipe 425, and lower ventilation pipe 515, and is finally blown out from each side diversion channel 324, longitudinal diversion channel 422, transverse diversion channel 427, and lower diversion channel 512, acting on the side model surface 311, upper model surface 411, and lower model surface 521 respectively. At the same time, the lifting motor 64 drives the internal gear 62 to continue rotating in the forward direction. The internal gear 62 will drive the lower mold 52, side mold 31, and upper mold 41 to rotate synchronously in the circumferential direction. The cold air is evenly blown onto the side model surface 311, upper model surface 411, and lower model surface 521, blowing away dust, iron filings, and other debris on their surfaces.

[0140] When the internal gear 62 stops rotating, the two lifting screws 61 are distributed in the front-back direction and will not affect the left-right movement of the upper mold 41.

[0141] Next, the lower mold 52, side mold 31, and upper mold 41 are reset; the process is the reverse of the above. After the lifting screw 71 drives the upper mold 41 to move upward to above the side frame 32, it then moves to the left (the process of each component cooperating is the same as before). Then the internal gear 62 rotates in the opposite direction, and the lower mold 52 drives the two side molds 31 to move downward to the lower limit position. The lower mold 52 abuts against the lower frame 51, and the two side frames 32 move closer to each other, so that the side frame 32 abuts against the side mold 31. Then the side screw 35 drives the side sealing block 36 to move downward and separate from the side insert plate 33. The side plug 331 is inserted into the side insertion hole 313, and the side mold 31 and the side frame 32 are fixed relative to each other.

[0142] Next, the lifting screw 71 drives the upper mold 41 to move to the right to directly below the upper frame 42 (the process of each component cooperating is the same as before). Then, the lifting screw 71 drives the upper mold 41 to move upward to the upper limit position, where the upper mold 41 abuts against the upper frame 42. The upper screw motor 46 drives the upper screw 461 to rotate, causing the upper sealing block 47 to move downward. The upper insertion post 471 separates from the upper insertion plate 45, and then the upper insertion plate 45 is inserted into the upper insertion hole 413 under the action of the upper insertion plate spring. The upper mold 41 and the upper frame 42 are relatively fixed, the positioning plug 451 separates from the positioning insertion plate 221, and the upper frame 42 separates from the upper plate 22.

[0143] Then, the side sealing block 36 moves upward to below the side ventilation pipe 322 and above each side diversion groove 324, the upper sealing block 47 moves upward to below the longitudinal ventilation pipe 423 and above each longitudinal diversion groove 422, the sealing push rod 54 drives the lower sealing plate 53 to move to the limit position away from the lower diversion groove 512, and the lower pressure plate 531 drives the lifting rack 74 to move to the upper limit position, thus returning to the initial state.

[0144] In this solution, the cold air is generated by a fan and a refrigeration unit, and the flow direction of the cold air is changed by the control of a solenoid valve in order to achieve the desired effect in the above process. The connection method of the pipeline is a conventional technical means in this field, and will not be described in detail here.

[0145] This solution includes a controller, which, along with its operation buttons, controls the operation of the aforementioned electrical components to achieve the above-mentioned operation process. This method is a conventional technique in the field and will not be elaborated upon here.

Claims

1. A wheel hub die-casting production apparatus, characterized in that: It includes a lower plate (21), a lower mold frame (5) installed in the middle of the lower plate (21), two symmetrically arranged side mold frames (3) slidably connected to the upper end of the lower plate (21) in the left and right directions, and an upper mold frame (4) slidably connected to the lower mold frame (5) in the longitudinal direction; the upper mold frame (4) includes an upper frame (42) and an upper mold (41) detachably connected to the outer periphery of the upper frame (42); The lower mold frame (5) includes a lower frame body (51) disposed on the lower plate (21) and a lower mold (52) longitudinally slidably connected above the lower frame body (51); the upper end of the lower frame body (51) is provided with a plurality of coaxially arranged upper opening lower frame body channels (511). The lower frame (51) is provided with a lower ventilation mechanism on the left and right sides respectively; the lower ventilation mechanism includes a plurality of lower diversion slots (512) arranged in the horizontal direction on the lower frame (51) and allowing cold air to pass through. When the lower mold (52) abuts against the lower frame (51), the cold air passing through the lower flow channel (512) cools the lower mold (52); after the lower mold (52) separates from the lower frame (51), the cold air passing through the lower flow channel (512) acts on the surface of the upper mold frame (4). The lower plate (21) is equipped with a lifting mechanism (6) for driving the movement of the lower mold (52); the lifting mechanism (6) includes a positioning ring (63) rotatably connected to the rotating shaft at the middle of the upper end of the lower plate (21) and a lifting screw (61) rotatably connected to the rotating shaft at an eccentric position on the positioning ring (63) and arranged longitudinally; the lower mold (52) is provided with a threaded sleeve (524) that is threadedly connected to the lifting screw (61). The lifting screw (61) is coaxially provided with a lifting gear (621) on its outer wall; the lifting mechanism (6) also includes an internal gear (62) that is coaxially provided with the positioning ring (63) and meshes with the lifting gear (621). The lower plate (21) is slidably connected to a translation slide plate (72) along the left and right direction; the upper end of the translation slide plate (72) is rotatably connected to a lifting screw (71) for driving the upper mold (41) to move up and down. The lower plate (21) is longitudinally slidably connected to a lifting rack (74) distributed in the left and right directions near the lifting screw (71); the outer wall of the lifting screw (71) is coaxially provided with a lifting gear (711) that can mesh with the lifting rack (74). The lifting screw (71) is connected to a lifting sleeve (43); the lifting sleeve (43) is rotatably connected to the upper mold (41); the upper outer periphery of the upper mold (41) is provided with a separation opening (414) that can be inserted into the lifting screw (61).

2. The wheel hub die-casting production apparatus according to claim 1, characterized in that: The lower frame (51) is provided with a riser pipe (513) extending to the lower plate (21) below the middle; the lower mold (52) is provided with a connecting pipe (525) that communicates with the riser pipe (513) through the upper and lower parts; a furnace chamber (24) for holding alloy solution is provided below the lower plate (21); the riser pipe (513) extends into the furnace chamber (24).

3. The wheel hub die-casting production apparatus according to claim 1, characterized in that: The upper frame (42) is provided with an upper ventilation mechanism on the left and right sides respectively; the upper ventilation mechanism includes a plurality of longitudinal diversion grooves (422) arranged vertically on the side wall of the upper frame (42) and distributed in the left and right directions, and a plurality of transverse diversion grooves (427) arranged in the left and right directions on the lower part of the upper frame (42) and distributed in the vertical direction.

4. The wheel hub die-casting production apparatus according to claim 1, characterized in that: The side mold frame (3) includes a side frame body (32) and a side mold (31) detachably connected to the side of the side frame body (32) near the center of the upper plate (22); the side frame body (32) is provided with a plurality of side diversion grooves (324) arranged longitudinally and arranged in the left and right directions.

5. The wheel hub die-casting production apparatus according to claim 1, characterized in that: The lower ventilation mechanism also includes a lower connecting groove (514) on the lower frame (51) that connects to each lower diversion groove (512) in a lower ventilation mechanism, a lower ventilation pipe (515) at the lower end of the lower frame (51) that communicates with the lower connecting groove (514), and a lower sealing plate (53) that is slidably connected in the lower connecting groove (514) in the front-back direction. The lower sealing plate (53) has an inclined baffle (532) at one end near the lower diversion groove (512) for closing the lower diversion groove (512). The lower sealing plate (53) is provided with a lower pressure plate (531) located below the lower frame (51) for driving the lifting rack (74) to move.

6. A wheel hub, characterized in that: The wheel hub (1) is manufactured using a wheel hub die-casting production apparatus as described in claims 1-5. The wheel hub (1) includes a rim (12) and spokes (14). The spokes (14) are composed of multiple straight spokes interlaced.

7. A wheel hub according to claim 6, characterized in that: The hub (1) also includes an inner rim (11) and an outer rim (13); the cooling sequence of the hub (1) is as follows: inner rim (11), rim (12), outer rim (13), outer circumference of spoke (14), and inner circumference of spoke (14).

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