Mould assembly control device of hot core box mould

Abstract

The invention provides a mould assembly control device of a hot core box mould. The mould assembly control device is characterized in that the middle part of a lever is rotatablely arranged on an upper support plate through a core shaft, a first end, which is close to an upper mould of a hot core box, of the lever is fixedly provided with a core column, a spring is sleeved on the core column, the lower end of the spring resists against the lever, and the upper end of the spring resists against a pressing plate; a second end, which is far from the upper mould of the hot core box, of the lever is fixedly provided with a sensing plate; a push rod is fixed on a lower support plate and can push against the first end of the lever, and the push rod can compress the spring and can push the lever to rotate around the core shaft clockwise; a proximity switch is fixed on a lower supporting plate through an installing plate and is used for sensing the position of the sensing plate and generating a sensing signal; a signal processing module is used for controlling a sand jetting switch of a sand jetting machine according to the sensing signal of the proximity switch. The mould assembly control device provided by the invention has the advantages that a sand jetting movement of the sand jetting machine can not be realized when mould assembly is not in place; the sand jetting machine can jet the sand when the mould assembly is in place; therefore, a condition that a sand core is over thick since the sand is jet when the mould assembly is not in place is prevented.

Description

technical field [0001] The invention relates to the technical field of hot core box molds, in particular to a mold clamping control device for hot core box molds. Background technique [0002] Hot box core making is a method of machine-made sand cores in foundry production. Specifically, the sand material mixed with foundry sand, thermosetting resin and catalyst is injected into the core box with a heating device, and heated to 180-250 °C to heat the sand material close to the surface of the core box. The binder can be polycondensed and hardened in a short period of time to form a sand core, which does not need to be dried in an oven, and has the advantages of shortening the production cycle. Moreover, as long as 5-10 mm of the surface layer of the sand core forms a hard shell, it can be taken out from the core box, and the core sand in the central part can harden the remaining sand by itself under the action of waste heat and the heat released by the hardening reaction, wh...

AI Technical Summary

Problems solved by technology

However, in the prior art, during the mold closing process of the hot core box mold, sometimes the sand shooting action of the core shooter has already started when the mold clamping is not in place, so that the core shooter starts to shoot sand when the mold clamping is not in place, resulting in The core is super thick, and this problem needs to be solved urgently

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