A wheel hub casting mold
A technology of casting molds and hubs, which is applied in the manufacturing field of aluminum alloy hubs. It can solve the problems of poor mechanical properties, air bubbles, and shrinkage of hubs, and achieve the effects of increased strength, smaller pores, and uniform stress.
Active Publication Date: 2020-12-01
CHONGQING CHANGQING DIE CASTING CO LTD
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Problems solved by technology
[0003] Since the casting of the wheel hub of this invention is to inject molten aluminum into the cavity for molding, and then cool it to obtain the finished product, the mechanical properties of the cast wheel hub are usually poor.
In addition, since the mold of the wheel hub is composed of an upper mold, a lower mold and a side mold, one end of the hub with a spoke plate is located at the lower part of the mold, and the free end of the other end is located at the upper part of the mold, and a side riser should be provided at the edge of the free end, because The thickness of this edge is thinner, and it is the last part to cool and solidify. Therefore, the fast water cooling is easy to produce casting defects such as air bubbles and shrinkage porosity at the edge of the hub; and, in this case, the casting is easy to The rim at the free end becomes oval
Method used
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[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0014] Such as Figures 1 to 3 As shown, the hub casting mold in this implementation includes a bottom template 1, a bottom mold 2, a top mold 4, a plurality of side molds 3, a pouring pipe 5, a gas input pipe 51, an inert gas storage 512, a gas input pump 511, an aluminum Liquid storage 502, aluminum liquid pouring pump 501, first valve 61, second valve 62, third valve 63, fourth valve 64, exhaust pipe 52, water cooling channel 21, guide rail, slide cylinder, air injection system, ball head 71 , connecting rod 72, action plate 73, push assembly.
[0015] Wherein, the bottom mold 2 is arranged on the bottom template 1, and the bottom mold 2, the top mold 4 and a plurality of side molds 3 form a cavity 41 for forming the hub, and the gate 22 is arranged at the bottom of the bottom mold 2 and passes through the bottom mold. Formwork 1, pouring...
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The invention discloses a hub casting mold. The hub casting mold comprises a bottom mold, a top mold and multiple side molds. The hub casting mold is characterized in that the lower portion of the bottom mold is connected with a casting pipe, the casting pipe communicates with a gas input pipe, an inert gas storage device and a gas input pump inputting inert gas into a cavity are arranged on the gas input pipe, a molten aluminum storage device and a molten aluminum casting pump are arranged on the casting pipe, and a first valve and a second valve are sequentially arranged on the casting pipefrom the cavity to the exterior. The volume formed in the portion, between the first valve and the second valve, in the casting pipe is the volume of molten aluminum needed by one-time casting of a hub, a third valve is arranged at the position, close to the casting pipe, of the gas input pipe, an exhaust pipe communicates with the position, close to the first valve, of the casting pipe, and a fourth valve is arranged on the exhaust pipe. By means of the hub casting mold, the density of the molten aluminum is guaranteed in the casting process, the hub is evenly stressed, and the strength of the hub is improved.
Description
technical field [0001] The invention relates to the manufacture of an aluminum alloy wheel hub, in particular to a wheel hub casting mold. Background technique [0002] The wheel hub is the part of the vehicle used to connect the tire and the axle. The main material used for the wheel hub of high-end vehicles is aluminum alloy, which is usually cast on the wheel hub mold by pouring liquid aluminum alloy. For example, the Chinese invention patent with the existing publication number CN1060971A discloses "A Wheel Hub Casting Mold", which includes an upper mold mechanism and a lower mold mechanism; the upper mold mechanism and the lower mold mechanism are closed to form a wheel hub cake cavity; the lower mold mechanism The mold mechanism includes a lower mold, a splitter cone and a lower mold gate; the lower mold is cake-shaped, and a circular groove is provided on the top, and a pattern convex portion is arranged in the circular groove, and the circular groove The outer side ...
Claims
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IPC IPC(8): B22C9/28B22D27/13
CPCB22C9/28B22D27/003B22D27/13
Inventor 覃芬兰
Owner CHONGQING CHANGQING DIE CASTING CO LTD