Die casting mold and method of use for aluminum die casting with center hole

Abstract

The invention discloses a die-casting mold of an aluminum die-casting with a center hole and a use method thereof, comprising a movable mold assembly, a fixed mold assembly and an inner core assembly; The inner slider assembly around the parts, the inner slider assembly includes at least two groups of first inner slider and second inner slider that are laterally fitted and can move radially; the inner wall of the first inner slider and the inner drawer The included angle α between the axes of the parts, the included angle β between the inner wall of the second inner slider and the axis of the inner drawer, the included angle α is greater than the included angle β; the first inner slider and the second inner slider The side walls are matched by a radial slope structure, and the radial slope structure can make the first inner slider move inward relative to the second inner slider; in the second state, the inner drawer is drawn away from the center cavity of the inner slider assembly, The first inner slider and the second inner slider contract inwardly so that the outer walls of each inner slider are away from the inner hole of the aluminum die casting.

Description

technical field [0001] The invention relates to the technical field of a die-casting mold, in particular to a die-casting die of an aluminum die-casting part with a middle hole and a use method. Background technique [0002] Aluminum die castings include reducer housings, transmission housings, wiper skeletons, etc. The production of aluminum die castings requires the use of corresponding molds. The die casting machine is used to inject liquid aluminum into the cavity of the mold, take it out after cooling, and finally obtain the finished product through subsequent processing. [0003] Such as figure 1 The cylindrical aluminum die casting shown has a center hole, and the aluminum die casting has a large volume and a relatively long depth of the center hole. In the traditional technology, the inner slider with a certain draft slope is generally used to pull the core along the central axis of the middle hole. However, the machining allowance of the blank in this method is u...

AI Technical Summary

Problems solved by technology

However, the core-pulling angle is strictly required, so the mold processing precision is high, and the long-term production process is prone to difficult demoulding.

Images