Low-pressure casting mold for aluminum wheel

Patent metadata

Field	Value
Publication number	US-10549339-B2
Application number	US-201816050097-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Mar 30, 2018
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

Disclosed in the present application is a low-pressure casting mold for an aluminum wheel. V-shaped grooves are formed in the cavity surface of a side mold, a cavity is formed in the back cavity of the side mold, a cooling duct is arranged in the cavity of the side mold, and a main air pipe is perpendicular to an annular branch; the annular branch is concentric with a wheel casting, and air pipes are 5-10 mm away from the bottom surface of the cavity; the two ends of the annular branch are welded with plugs; air outlet holes are arranged on the annular branch, and the holes are perpendicular to the bottom surface of the cavity; the diameters of the air outlet holes are 3 mm, and the holes are uniformly distributed at intervals of 10-15 mm in the circumferential direction.

First claim

What is claimed is:

1. A low-pressure casting mold for an aluminum wheel, comprising a bottom mold, a sprue cup, a sprue bushing, a filter screen, a sprue spreader, a top mold, a side mold and a cooling duct, wherein
in a cavity surface of the side mold, V-shaped grooves are formed opposite to a hump, follow the contour of the hump, and cover a whole hot spot area in a length direction; depths of the V-shaped grooves are 1-1.5 mm, included angles are 60-120°, and the V-shaped grooves are uniformly distributed on the circumference of the side mold at intervals of 10 mm;
in a back cavity of the side mold, a cavity is formed opposite to the hump, and is concentric with a wheel casting and annular; a bottom surface of the cavity follows the contour of the hump, and is 8-12 mm away from a wall of a mold cavity; a height of the cavity is equivalent to the range of hump hot spots; the two side surfaces of the cavity are at least 10 mm away from fitting surfaces of the side mold;
the cooling duct is arranged in the cavity of the side mold, and comprises a main air pipe and an annular branch; the main air pipe is perpendicular to the annular branch, and is in a single inlet form; the annular branch is concentric with the wheel casting, and the main air pipe is 5-10 mm away from the bottom surface of the cavity; two ends of the annular branch are welded to form plugs to form a closed duct; air outlet holes are arranged on the annular branch, and the air outlet holes are perpendicular to the bottom surface of the cavity; the diameters of the air outlet holes are 3 mm, and the holes are uniformly distributed at intervals of 10-15 mm in the circumferential direction.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Wang Kaiqing
• Sheng Song
• Wang Yingfeng
• Xu Xianyi
• Li Changhai

Classifications

• B22C9/065

  Cooling or heating equipment for moulds · CPC title

• B22D15/005

  of rolls, wheels or the like (B22D19/16 takes precedence) · CPC title

• B22D18/04 Primary

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

• B22C9/28 Primary

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