Sand casting demolding treatment method

Abstract

The invention provides a sand casting demolding treatment method. According to the sand casting demolding treatment method, a turnover discharging device is included, and the turnover discharging device comprises a bottom plate, a support frame, a discharging mechanism and a collecting box. The method for carrying out demolding treatment operation by using the turnover discharging device specifically comprises the steps of equipment adjustment, sand box fixing, reciprocating overturning, taking out of a casting and cleaning of the casting. The discharging mechanism comprises an overturning motor, an overturning bracket, a positioning seat, a positioning rod, a vertical plate, a jacking block and a protective branch chain. The protective branch chain comprises a fixing plate, a limiting rod, a connecting screw rod, a rotating plate, a butt-joint screw rod, a transverse stop rod, a longitudinal stop rod and an extrusion frame. After a sand box is fixed on the discharging mechanism, sandis made to continuously fall off from the sand box in a reciprocating overturning mode, in the overturning process, the casting can be protected by the protective branch chain, and the situation thatthe casting is thrown out and is thus scratched is avoided.

Description

technical field [0001] The invention relates to the field of casting, in particular to a mold-sand casting demoulding treatment method. Background technique [0002] Sand mold casting is a widely used casting form, which is to use sand to make molds. Sand mold casting needs to put the finished part model or wooden model in the sand, and then fill the sand around the pattern. After taking out the pattern from the box, the sand forms a mold, and then pours the metal liquid into the mold through the pouring system, and waits for the metal liquid to solidify. castings can be produced. [0003] After the casting is formed, the molding sand in the sand box needs to be poured out to take out the casting. At present, the cleaning of the molding sand is mainly done by turning the sand box manually. This method has the following problems in the actual operation process: [0004] (1) The overall mass of the sand box is large, and the staff consumes a lot of physical strength during t...

AI Technical Summary

Problems solved by technology

[0004] (1) The overall mass of the sand box is large, and the staff consumes a lot of physical strength during the turning process. Once the physical strength is exhausted, the sand box will shake or even fall, resulting in the casting being bumped or the staff being injured. poor security and stability;

[0005] (2) During the flipping process of the sand box, the molding sand next to the castings keeps falling, and the castings that have lost their wrapping are easy to fall out of the sand box, resulting in scratches, gaps and other scratches on the surface of the castings, which reduces the quality of the finished products of the castings. In order to repair the scratches, subsequent grinding and polishing operations are required, which increases the workload

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