A mold structure and its manufacturing process

Abstract

The invention relates to the technical field of casting, and discloses a casting mould structure and manufacture technology thereof. The ladder of the upmost end of a first sand core is provided witha chilling block element; a first rib is also arranged in the first sand core; a core rod is fixed on the center position of the first sand core by the first rib; the bottom of the first sand core isprovided with a metal positioning head; the bottom surface of the inner cavity of a lower box is provided with a metal positioning ring cooperated with the metal positioning head; the top surface of the inner cavity of an upper box is matched with the top shape of the first sand core; the first rib is also fixedly provided with a first hoisting hook; box iron is fixed above the upper box; the first hoisting hook and the box iron is detachably fixed to enable the positions of the first sand core and the upper box to be relatively fixed. The first sand core of the casting mould structure does not shake, is free from core shift and is high in a rate of finished products.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a mold structure and a manufacturing process thereof. Background technique [0002] At present, in the field of casting, the sand core used to form the middle through hole is generally only positioned with the upper box or the lower box. During the casting process, the position of the sand core will easily cause eccentricity, resulting in defective products. In addition, the existing technology After the medium coating is completed, it is generally dried naturally. However, the naturally dried coating is prone to warping and sticks to the casting, which affects the processing quality. Contents of the invention [0003] In order to solve the defects in the prior art that the sand core used for forming the middle through hole is not firmly fixed, easy to eccentric, and the yield is low, the present invention provides a sand core that can firmly fix the sand core for forming the m...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects in the prior art that the sand core used for forming the middle through hole is not firmly fixed, easy to eccentric, and the yield is low, the present invention provides a sand core that can firmly fix the sand core for forming the middle through hole and improve the yield. Mold structure and its manufacturing process

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