Method of forming molding-flask-less, upper and lower molds and device therefor

Abstract

A method and device for efficiently forming high quality, molding-flask-less, upper and lower molds. A match plate is held by a pair of horizontally-set, upper and lower molding flasks each having a sandblast port in the side wall. Upper and lower squeeze means are inserted in match-plate-less openings in the upper and lower molding flasks, so as to define two upper and lower molding spaces. The upper and lower molding flasks and the match plate are set in a vertical state and the sandblast ports are moved upward. Molding sand is blasted from the sandblast ports into the upper and lower molding spaces to fill the latter with molding sand. The upper and lower squeeze means are further moved while the upper and lower molding flasks and match plate are restored to the horizontal state, so as to squeeze the molding sand in the upper and lower molding spaces. The upper and lower molding flasks in the mold are separated from the match plate, and then the match plate is carried out from between the upper and lower molding flasks. A core, if necessary, is set in the formed mold, and then the upper and lower molding flasks in the mold are superposed. The mold is extracted from the superposed upper and lower molding flasks.

Description

technical field [0001] The invention relates to a molding method and a molding device for overlapping upper and lower casting molds without sand boxes. Background technique [0002] An existing mold molding device of this type adopts the method of making the upper and lower pairs of sand boxes perform interactive and intermittent reciprocating motions between the molding sand compression workstation and the sand box extraction workstation and make the upper and lower pairs of sand boxes coincide. The upper and lower molds without sand box are used for molding. Wherein the molding sand compression workstation is located above the abutment, and compresses the molding sand in a direction relatively horizontal to the bed surface. The sand box extraction workstation is located near the bed surface of the abutment, and performs casting mold positioning and sand box extraction in a direction relatively perpendicular to the bed surface. [0003] Yet the efficiency of mold molding ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for molding upper and lower molds without a sand box and a molding device for solving the problems of low mold molding efficiency and room for improvement in mold quality after molding.

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