Sand shooting mechanism and sand shooting method of sand shooting machine

Abstract

The invention discloses a sand shooting mechanism of a sand shooting machine. The mechanism includes an upper mould, a template and a sand shooting plate. A sand core forming cavity is defined by theupper mould and the template; the central part of the upper mould is provided with up-down through cavities; the sand shooting plate is provided with sand shooting nozzles; the template is provided with pouring riser columns and a filter screen; the central part of the sand shooting plate is provided with a sand shooting curing device; the sand shooting curing device includes a heating curing column, a heat resistant guide rod and a riser column retaining ring; an electric heating tube is disposed inside the heating curing column; the top of the heat resistant guide rod is provided with a limit cushion block and a limit screw; and the limit screw has a hollow structure, and a heating lead wire and a lead wire sealing ring are disposed inside the limit screw. The invention also discloses asand shooting method of the sand shooting machine. Through the utilization of the sand shooting curing device, secondary demoulding heating can be performed on the upper mould, the template and a sandcore, the sand shooting pressure can be reduced, mould loss and mould adhering sand conditions can be reduced, the operator labor intensity is decreased, the operator safety risk is reduced, and thecompany production operation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of air pressure or vacuum compaction, and in particular relates to a sand shooting mechanism of a sand shooting machine and a sand shooting method thereof. Background technique [0002] The core shooter is often used when casting various sand cores. It uses compressed air as power to inject sand evenly into the core box and compact it. The general working process: first inject the core sand into the sand storage cylinder, and then the bottom of the injection head Inject the core sand into the core box, compress the air to make it shape, blow in the curing gas, release the core sand after curing and molding, and finally move it into the top core station to take out the core; [0003] Existing core shooting machines have a short exhaust time after the sand is shot, and the compressed air suddenly expands in the air, making a lot of noise, which will damage the hearing of the operator for a long time; Particle...

AI Technical Summary

Problems solved by technology

[0003] Existing core shooting machines have a short exhaust time after sand shooting, and the compressed air suddenly expands in the air, making a lot of noise, which will damage the hearing of operators for a long time; Particles, when exhausting, some of the fine sand and resin suspended in the gas will be discharged into the workshop together with the airflow, which greatly increases the dust content in the workshop air, seriously affects the working environment, and endangers the health of workshop workers. Some noise reduction and dust removal equipment generally have complex structures and are expensive

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