Low-pressure mold for improving performance of spokes of aluminum wheel

Patent metadata

Field	Value
Publication number	US-10245635-B2
Application number	US-201715640708-A
Country	US
Kind code	B2
Filing date	Jul 3, 2017
Priority date	Jul 3, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A low-pressure mold for improving performance of spokes of an aluminum wheel. The mold is characterized in that cooling air holes in a bottom mold are moved for 10 mm outwards; heat-insulation grooves are formed in positions, 5 mm from the cooling air holes, of a back cavity of the bottom mold, and are 8 mm from the surface of a cavity; and the width of each heat-insulation groove is set to 8 mm. A circumference arrangement range of the heat-insulation grooves needs to be larger than the widths of the spokes, and the number of the heat-insulation grooves is defined by the number of the spokes. Heat-preservation asbestos is arranged in each heat-insulation groove, thereby further strengthening heat-insulation and heat preservation functions. One air hole is added based on the prior art, thereby increasing the cooling area and improving the cooling intensity.

First claim

The invention claimed is:

1. A low-pressure mold for improving performance of spokes of an aluminum wheel, comprising:
a top mold, a bottom mold, cooling air holes, a side mold, heat-insulation grooves and heat-preservation asbestos;
wherein the cooling air holes in the bottom mold are arranged along a circumference of the bottom mold;
the heat-insulation grooves are formed in positions, 5 mm inwards along a radial direction of the bottom mold from the cooling air holes, of a back cavity of the bottom mold, and are 8 mm from the surface of a cavity;
and the width of each heat-insulation groove is set to 8 mm along the radial direction, and the circumferential width of each heat-insulation groove is larger than the circumferential width of the corresponding spoke along the circumference.

2. The low-pressure mold for improving the performance of the spokes of the aluminum wheel according to claim 1 , wherein the heat-preservation asbestos arranged in the heat-insulation grooves; and
the number of the air holes is more than two for each spoke, but the number of the air holes for each spoke is at most four.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Liu Guohua
• Wang Xu
• Li Xueqiang
• Xing Dong
• Li Junmeng
• Li Changhai
• Zhu Zhihua
• Wang Yongning

Classifications

• B22C9/065 Primary

  Cooling or heating equipment for moulds · CPC title

• B22C9/28

  for wheels, rolls, or rollers {(B22D15/005 takes precedence)} · CPC title

• B22D18/04

  Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould · CPC title