Precision anti-aluminum running die-casting device

Abstract

The invention discloses a precision anti-aluminum running die-casting device, which comprises a main die and an insert fixed on the main die, wherein the main die consists of a fixed die and a movable die fit with the fixed die; the insert is inserted in the fixed die; and the fitting surfaces of the insert and the fixed die are non-planar surfaces. In the invention, the fitting surfaces of the fixed die and the insert are non-planar surfaces instead of linear surfaces, so the fit clearance between the insert and the fixed die are reduced and the aluminum running is effectively avoided in an aluminum alloy die-casting process.

Description

technical field [0001] The invention belongs to the field of die-casting devices, in particular to a precision anti-running aluminum die-casting device. technical background [0002] Die casting is a highly mechanized casting method that is filled at high speed and crystallized under high pressure. The products produced by this casting method have high precision, accurate size, and high production efficiency. It has been very popular in the production and application of non-ferrous alloys. . In the die-casting production process, there are many products with inserts, such as bolts, nuts and other inserts. At present, their positioning and installation in the die-casting mold during the die-casting process are mostly achieved by small clearance fit. However, with With the use and wear of the device, the gap becomes larger. In addition, due to the error in the size of the bolt, the gap between the bolt and the device cannot meet the design requirements, resulting in the pheno...

AI Technical Summary

Problems solved by technology

[0004] First, the bolt 7 is processed and manufactured by the manufacturer, and it has a certain tolerance. When the lower limit of the tolerance exceeds the standard, the gap between the bolt 7 and the mating surface 8 of the cavity 9 increases, resulting in aluminum leakage;

[0005] Second, the die casting device is a kind of metal mold casting. During the production process, the fixed mold 11 must be preheated to a certain temperature to produce qualified products, otherwise there will be casting defects such as cold shut, insufficient pouring, and air holes. Defects, the device will expand when heated, which will increase the size of the cavity 9, increase the gap between the cavity 9 and the mating surface 8 of the bolt 7, and cause aluminum to run out;

[0006] Third, die casting is a manufacturing process with high production efficiency. The frequent use of bolts 7 and cavity 9 causes certain wear and tear on cavity 9 after a period of use, which increases the size of the gap and causes aluminum to run out.

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