Sand box with steel plate lining plates

Abstract

The invention relates to a sand box with steel plate lining plates. In the sand box, steel plate vertical lining plates and steel plate inclined lining plates are arranged at the periphery of the inner cavity of an upper sand box shell and the inner cavity of a lower sand box shell; steel plate chamfer lining plates are embedded between two adjacent steel plate vertical lining plates and between two adjacent steel plate inclined lining plates respectively; four steel plate end face lining plates abutting against one another in a close fit mode are arranged on the lower surface of the upper sand box shell and on the upper surface of the lower sand box shell respectively; each steel plate vertical lining plate, each steel plate inclined lining plate, each steel plate end face lining plate and each steel plate chamfer lining plate are fastened on the sand box shells through fastening screws or sunk screws respectively and have the same thickness; and hard chrome is plated on the outer surfaces of each steel plate vertical lining plate, each steel plate inclined lining plate, each steel plate end face lining plate and each steel plate chamfer lining plate respectively. The invention has the advantages that: sand box internal cavity walls are smooth and wear-resistant, castings cast by the sand box have high quality, the steel plate lining plates can be maintained and exchanged conveniently, installation and maintenance time can be greatly shortened and maintenance cost can be greatly saved.

Description

technical field [0001] The invention is a sand box, especially a sand box with a steel plate liner. The invention belongs to the technical field of foundry machinery in machinery manufacturing. Background technique [0002] The new-generation FCMX-2 molding machine produced by Japan's Shinto Company is a horizontal split injection molding machine. After the sand mold is molded in the sand box, the sand mold is pushed onto the trolley to complete the molding action after setting the core, closing the mold, and pushing out the sand box. The sand box is composed of upper and lower parts, and a double-sided template is set in the middle to make the upper and lower sand molds at the same time. The inner wall around the sand box is integrally injected with polyurethane composite rubber to form a layer of lining board and is inlaid with a large number of exhaust plugs. During molding, the upper and lower compacting plates seal the upper and lower ends of the sand box to form an ...

AI Technical Summary

Problems solved by technology

The degumming of the sand box liner will create interlayer gaps between the liner and the sand box. When sand is shot, the molding sand can easily enter the interlayer from the gap, blocking the exhaust passage, and also affecting the flatness of the inner wall of the sand box.

Due to the poor exhaust of the sand mold, the filling compactness is not uniform, and the strength and the flatness of the sand mold are partially affected, resulting in a decline in the quality of the casting

For the degummed sand box, it must be sent to the original Japanese manufacturer to re-cast it with polyurethane. It usually takes three months, and the cost of replacing the liner of a sand box is more than 50,000 yuan.

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