Low-pressure casting device for producing automobile aluminum alloy hub

Abstract

The invention relates to a low-pressure casting device for producing an automobile aluminum alloy hub. The low-pressure casting device comprises a crucible, an air inlet pipe, a liquid ascending pipe,a die, a branch pipe, a connecting pipe and a filter mechanism. A pressure application mechanism comprises a transverse rod, a first motor, a first drive shaft, a casing pipe, a lifting rod, a pistonplate and two closing assemblies. The filter mechanism comprises an air inflow pipe, a water tank, a drying box, a charging box and a water injection pipe. A charging assembly is arranged in the charging box. A removal assembly comprises a second motor, a bearing, a second drive shaft, a movable plate, a guiding rod, a connecting rod, a sealing plate and an abutting unit. According to the low-pressure casting device for producing the automobile aluminum alloy hub, after the branch pipe is fully filled with molten aluminum through the pressure application mechanism, pressure is applied to themolten aluminum, the molten aluminum is compressed into the die, the density of the molten aluminum is improved, and the quality of the formed hub is improved; and in addition, through the filter mechanism, outer sundries are prevented from entering the liquid ascending pipe through the connecting pipe, the purity of the molten aluminum in the liquid ascending pipe is guaranteed, and practicability of the equipment is improved.

Description

technical field [0001] The invention relates to the field of production equipment for automobile spare parts, in particular to a low-pressure casting device for producing aluminum alloy wheel hubs of automobiles. Background technique [0002] The wheel hub is also called the rim, the wheel, and the tire bell. It is a barrel-shaped, center-mounted metal part that supports the tire on the inner profile of the tire. There are many types of hubs according to diameter, width, molding method and material. In the process of manufacturing wheel hubs, two production methods, casting and forging, are mostly used, and the casting methods are divided into two types: gravity casting and low-pressure casting. Among them, low-pressure casting has become the most widely used casting due to its low cost and fast forming. Molding. [0003] When low-pressure casting is performed, compressed air usually enters the crucible from the intake pipe, which increases the air pressure in the crucible...

AI Technical Summary

Problems solved by technology

[0003] When low-pressure casting is performed, compressed air usually enters the crucible from the intake pipe, which increases the air pressure in the crucible, forcing the molten aluminum inside the crucible to rise along the riser and enter the cavity of the mold. As time goes by, the molten aluminum It will fill the cavity, and then enter the pressure holding stage, and then complete the casting, but in the actual casting process, only rely on the air pressure at one end of the external intake pipe to hydraulically inject the aluminum into the mold, although the aluminum liquid can be filled into the mold, but due to The low density of molten aluminum leads to light weight of the formed wheel hub, which reduces the quality of the wheel hub, thus reducing the practicality of the existing wheel hub low-pressure casting device

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