CN210023674U

CN210023674U - Wheel hub casting forming die

Info

Publication number: CN210023674U
Application number: CN201920592537.XU
Authority: CN
Inventors: 贺桂春; 廖宗凯; 邱洪星
Original assignee: GUANGDONG WANFENG MOTORCYCLE WHEEL CO Ltd
Current assignee: GUANGDONG WANFENG MOTORCYCLE WHEEL CO Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-02-07
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a wheel hub casting forming die, include: the upper side of the lower die is provided with a lower plane for casting and forming a spoke; the side die is circumferentially clamped on the lower die, and the upper side of the side die is provided with an annular clamping groove; the upper die is used for covering the side die and is provided with a pouring gate, a plurality of dead heads and a plurality of limiting ribs, the pouring gate is arranged in the middle of the upper die, the plurality of dead heads are a plurality of notches formed in the circumferential direction of the upper die, the limiting ribs are used for being slidably connected with the annular clamping grooves, and the dead heads and the limiting ribs are circumferentially distributed at intervals; and the mold cavity is formed by enclosing the interior of the lower mold, the side mold and the upper mold, and the riser and the sprue are communicated with the mold cavity. The utility model aims at providing an easily aim at mould and side form in order to guarantee the even wheel hub casting forming die of wheel hub thickness.

Description

Wheel hub casting forming die

Technical Field

The utility model relates to a casting mould especially relates to a wheel hub casting forming die.

Background

The hub is an important component of a vehicle, and particularly, the hub is a cylindrical metal part which is arranged on an axle and is used for supporting a tire, wherein the hub mainly structurally comprises a rim (a wheel part which is matched with the tire in an assembling way and supports the tire), a shaft sleeve (a wheel part sleeved outside the axle), a spoke (a wheel part which is connected with the hub of the axle in an installing way and supported between the rim and the shaft sleeve) and a valve hole (a hole for installing a valve of the tire). At present, the manufacturing mode of wheel hub on the market is mainly through the mode completion that earlier gravity casting then handled through the lathe and polish, because the specificity of wheel hub self shape makes can not set up the center pin in order to guarantee the axiality through the central point at last mould and lower mould, and the mould that adopts is difficult to aim at when the compound die now for the die cavity thickness of formation is inhomogeneous, and output efficiency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem at least, provide one kind and easily aim at mould and side form in order to guarantee the even wheel hub casting forming die of wheel hub thickness.

The utility model discloses a realize through following technical scheme:

wheel hub casting forming die includes: the upper side of the lower die is provided with a lower plane for casting and forming a spoke; the side die is circumferentially clamped on the lower die, and the upper side of the side die is provided with an annular clamping groove; the upper die is used for covering the side die and is provided with a pouring gate, a plurality of dead heads and a plurality of limiting ribs, the pouring gate is arranged in the middle of the upper die, the plurality of dead heads are a plurality of notches formed in the circumferential direction of the upper die, the limiting ribs are used for being slidably connected with the annular clamping grooves, and the dead heads and the limiting ribs are circumferentially distributed at intervals; and the mold cavity is formed by enclosing the interior of the lower mold, the side mold and the upper mold, and the riser and the sprue are communicated with the mold cavity.

Preferably, go up the mould and include die cover, terrace die and mold core, the runner runs through die cover, terrace die and mold core setting, the mold core is provided with the outer peripheral face that is used for the casting to form the axle sleeve lateral surface, the terrace die cup joints outside the mold core, the terrace die downside is provided with the last plane that is used for the casting to form the spoke, the die cover cup joints on the terrace die.

Preferably, the inner side of the side die is provided with an outer molding surface for forming the outer side surface of the rim by casting, and the die cover and the lower die are respectively provided with a first inner molding surface and a second inner molding surface for forming the inner side surface of the rim by casting.

Preferably, the male die is provided with a third inner molding surface for forming the inner side surface of the wheel rim by casting, and the second inner molding surface and the third inner molding surface are provided with protrusions protruding towards the die cavity and used for forming the valve holes of the wheel hub by casting.

Preferably, the lower die is provided with a convex column in the middle of the lower plane for casting the inner side surface of the shaft sleeve.

Preferably, the lower die is provided with a discharging assembly in the middle of the lower plane, and the discharging assembly comprises a telescopic discharging piece and a return spring arranged at the lower part of the discharging piece.

Preferably, the side die is integrally formed or separately formed, and a plurality of air holes which are horizontally arranged are formed in the side die.

Preferably, the limiting rib is a trapezoid with the cross-sectional dimension decreasing with the height.

Has the advantages that: the upper side of the side die is provided with an annular clamping groove; go up the mould, have runner, a plurality of rising head and a plurality of spacing muscle, it is a plurality of breachs that the rising head was offered for last mould circumference, spacing muscle be used for with ring groove sliding connection, rising head and spacing muscle circumference interval distribution, then only need aim at ring groove and spacing muscle when carrying out the compound die, just can confirm the relative position of mould and side form, just also can guarantee that the thickness of die cavity is even, and the runner of this application is put at the central point, rising head circumference distributes, well known runner and rising head are unnecessary material need get rid of in the processing in back, then the molten metal is handled to solidify at runner and rising head when filling the mould and has also further prevented the removal of mould, arrange rationally, output wheel hub's quality is higher.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

FIG. 1 is a cross-sectional view of a hub casting mold provided herein;

fig. 2 is an overall structure diagram of the hub casting mold provided by the present application.

Detailed Description

As shown in fig. 1-2, the hub casting mold includes: a lower mold 100 having a lower plane 110 for casting to form a spoke on an upper side; the side die 200 is circumferentially clamped on the lower die 100, and the upper side of the side die is provided with an annular clamping groove 210; the upper die 300 is used for covering the side die 200 and is provided with a pouring gate 310, a plurality of dead heads 320 and a plurality of limiting ribs 330, the pouring gate 310 is arranged in the middle of the upper die 300, the plurality of dead heads 320 are a plurality of notches formed in the circumferential direction of the upper die 300, the limiting ribs 330 are used for being connected with the annular clamping grooves 210 in a sliding mode, and the dead heads 320 and the limiting ribs 330 are distributed at intervals in the circumferential direction; and the mold cavity 400 is formed by enclosing the interiors of the lower mold 100, the side mold 200 and the upper mold 300, and the riser 320 and the gate 310 are communicated with the mold cavity 400. Then only need aim at ring-shaped slot 210 and spacing muscle 330 when carrying out the compound die, just can confirm the relative position of going up mould 300 and side form 200, just also can guarantee that the thickness of die cavity 400 is even, and runner 310 of this application is in central point position, riser 320 circumference distributes, it is well known that runner 310 and riser 320 are unnecessary material and need get rid of in the processing in the back, then the molten metal solidifies also further to have prevented the removal of going up mould 300 in runner 310 and riser 320 department when filling the mould, it is rationally arranged, the quality of output wheel hub is higher, and easy dismounting, the mould wearing and tearing in the compound die process have been reduced, can increase of service life.

It should be noted that "outside" and "inside" described in the present application are both relative to the axis of the hub shell, and the side of the rim close to the shell is the inside, and the side of the rim away from the shell is the outside.

For the structural arrangement of the upper die 300, the upper die 300 may be integrated or split, because the structure of the upper die 300 is relatively complex, it is preferable in this application that the upper die 300 is a split structure, specifically includes a die cover 340, a male die 350 and a die core 360, the gate 310 runs through the die cover 340, the male die 350 and the die core 360, the die core 360 is provided with an outer peripheral surface for casting to form the outer side surface of the sleeve, the male die 350 is sleeved outside the die core 360, the lower side of the male die 350 is provided with an upper plane 351 for casting to form a spoke, the die cover 340 is sleeved on the male die 350, then molten metal flows into the die core 360 from the gate 310 to form a cylindrical sleeve and flows into between the male die 350 and the lower die 100 to form a spoke, then a primary processed product of the hub is finally formed at other parts flowing into the die cavity 400, and then a shaft.

And as for the method for molding other parts of the hub, the present application preferably combines the upper die 300, the lower die 100 and the side die 200 to mold the spoke in the molding of directly molding the spoke through the upper die 300 and the lower die 100 and combining the side die 200, the inner side of the side die 200 is provided with the outer molding surface 220 for casting to form the outer side surface of the rim, and the die cover 340 and the lower die 100 are respectively provided with the first inner molding surface 341 and the second inner molding surface 120 for casting to form the inner side surface of the rim, i.e. the metal liquid flows between the first inner molding surface 341 and the outer molding surface 220 and flows between the second inner molding surface 120 and the outer molding surface 220 to solidify to form the rim part of the hub.

Since the underside of the male die 350 is provided with the upper flat surface 351 forming the spoke, in order to make the shape of the spoke-to-rim transition natural, it is preferred that said male die 350 is provided with a third inner profiled surface 352 for casting the inner side surface of the rim, so that the first 341, second 120 and third 352 inner profiled surfaces together serve for casting the inner profiled surface of the spoke-to-rim transition. In addition, it is also preferable that the second inner molding surface 120 and the third inner molding surface 352 are each provided with a protrusion 370 protruding toward the mold cavity 400, and the protrusion 370 is used for casting a valve hole forming a wheel hub. The valve hole is conveniently formed in the casting process, and the machining process of the subsequent lathe on the wheel hub is reduced.

The machining process of a subsequent lathe can be reduced, the casting of the shaft sleeve is completed in the casting stage, the middle of the lower plane 110 of the lower die 100 is provided with a convex column for forming the inner side face of the shaft sleeve in a casting mode, and the part, clamped between the die core 360 and the lower die 100, of molten metal flows into the die core 360 and is solidified to form the cylindrical shaft sleeve, so that the subsequent lathe machining is avoided, the shaft sleeve is formed in the main process, the subsequent independent machining is compared, the coaxiality is higher, and the problem that the thickness of wheels mounted on the axle is different is avoided.

In addition, the lower die 100 can be provided with a discharging assembly in the middle of the lower plane 110, the discharging assembly comprises a telescopic discharging piece and a return spring arranged at the lower part of the discharging piece, when the die is filled and cooled, the hub can be jacked up to complete the action of the hub demoulding only by taking away the upper die 300 and then jacking the discharging piece by applying force, and when the force is removed, the return spring pulls the discharging piece to return, so that preparation is made for next die assembly and die filling, and the discharging operation is simple and convenient. The arrangement of the discharging assembly and the convex column falls into the protection scope of the application, and the skilled person can choose to adopt the discharging assembly or the convex column together according to the actual requirement.

Optionally, the side mold 200 is integrally formed or separately formed, and in order to facilitate the removal of gas in the molten metal, it is preferable that the side mold 200 is provided with a plurality of air holes horizontally arranged.

In order to increase the degree of adaptation between the annular groove and the limiting rib 330, the limiting rib 330 is preferably trapezoidal, the cross-sectional dimension of which is reduced along with the reduction of the height, so that the limiting rib 330 can be clamped into the annular groove when having a certain machining error, or the upper die 300 can be adapted to other side dies 200, and the universality is high.

The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims

1. Wheel hub casting forming die, its characterized in that includes:

the upper side of the lower die is provided with a lower plane for casting and forming a spoke;

the side die is circumferentially clamped on the lower die, and the upper side of the side die is provided with an annular clamping groove;

the upper die is used for covering the side die and is provided with a pouring gate, a plurality of dead heads and a plurality of limiting ribs, the pouring gate is arranged in the middle of the upper die, the plurality of dead heads are a plurality of notches formed in the circumferential direction of the upper die, the limiting ribs are used for being slidably connected with the annular clamping grooves, and the dead heads and the limiting ribs are circumferentially distributed at intervals;

and the mold cavity is formed by enclosing the interior of the lower mold, the side mold and the upper mold, and the riser and the sprue are communicated with the mold cavity.

2. The hub casting mold of claim 1, wherein: the upper die comprises a die cover, a male die and a die core, wherein a pouring gate penetrates through the die cover, the male die and the die core, the die core is provided with an outer peripheral face used for casting to form the outer side face of the shaft sleeve, the male die is sleeved outside the die core, an upper plane used for casting to form a spoke is arranged on the lower side of the male die, and the die cover is sleeved on the male die.

3. The hub casting mold of claim 2, wherein: the side die inboard is provided with the outer profiled surface that is used for the casting to form the rim lateral surface, mould lid and lower mould are provided with respectively and are used for the casting to form the first interior profiled surface and the second interior profiled surface of rim medial surface.

4. The hub casting mold of claim 3, wherein: the male die is provided with a third inner molding surface used for forming the inner side surface of the wheel rim through casting, protrusions protruding towards the die cavity are arranged on the second inner molding surface and the third inner molding surface, and the protrusions are used for forming a valve hole of the wheel hub through casting.

5. The hub casting mold of claim 1, wherein: and the lower die is provided with a convex column which is used for forming the inner side surface of the shaft sleeve in a casting manner in the middle of the lower plane.

6. The hub casting mold of claim 1, wherein: the lower die is provided with a discharging assembly in the middle of the lower plane, and the discharging assembly comprises a telescopic discharging piece and a return spring arranged at the lower part of the discharging piece.

7. The hub casting mold of claim 1, wherein: the side mould is integrally formed or formed in a split mode, and a plurality of air holes which are horizontally arranged are formed in the side mould.

8. The hub casting mold of claim 1, wherein: the limiting ribs are trapezoidal, and the cross section size of each limiting rib is reduced along with the height of each limiting rib.