Method and device for forming flaskless cope and drag, and method of replacing matchplate

Abstract

A method and device capable of efficiently forming a high-quality flaskless cope and drag. A matchplate is held by a cope and drag as a set, the cope and drag being in a horizontal state and each having a sand blowing nozzle in the side wall. Upper and lower squeeze means are respectively inserted in matchplate-less openings in the cope and drag to define two upper and lower cavities. The cope and drag and the matchplate are set in a vertical state, and at the same time the sand blowing nozzles are moved upward. Molding sand is blown from the sand blowing nozzles into the two upper and lower forming cavities to fill the cavities. While the cope and drag and the matchplate being returned to a horizontal state, the upper and lower squeeze means are further advanced, and the molding sand in the two upper and lower forming cavities are individually squeezed. The cope and drag containing the mold are separated from the matchplate, and then the matchplate is removed from between the cope and drag. A core is set, when required, in the mold previously formed during the steps above, and then the mold is removed from the cope and drag containing the mold.

Description

technical field [0001] The invention relates to a method and device for manufacturing an upper and lower casting mold without a sand box, and a method and device for exchanging double-sided templates. Background technique [0002] As a kind of existing such molding device, it comprises structurally: [0003] A device is located above the abutment and squeezes the molding sand in the horizontal direction, and a device is located near the surface of the abutment to make a mold-making upper box fit with a mold-making lower box in a vertical direction and take out the mold. Two pairs of mold-making upper boxes and mold-making lower boxes alternately reciprocate, thereby obtaining upper and lower molds without sand boxes that fit each other. [0004] However, there are many problems in the manufacturing device of the upper and lower casting molds without a flask, such as the low efficiency of mold making, the quality of the casting mold needs to be improved, the exchange of doub...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an improved manufacturing method and device for the upper and lower casting molds without a sand box, and a method for exchanging double-sided templates, which solves the problem of low efficiency in the existing mold-making device, and the quality of the mold needs to be improved. It is inconvenient to exchange templates, and the device needs to be more miniaturized, etc.

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