Sand leakage preventing sand injection nozzle for large-calibre core shooting mould

Abstract

The invention relates to a sand leakage preventing sand injection nozzle for a large-calibre core shooting mould. The sand leakage preventing sand injection nozzle comprises a sand injection nozzle body, a rubber nozzle head and a cross rib. Bosses are arranged on the two sides of the lower end of the sand injection nozzle body, grooves matched with the bosses are formed in the upper end of the rubber nozzle head and used for connecting the sand injection nozzle body with the rubber nozzle head, an inner groove is formed in the inner wall of the lower end of the rubber nozzle head, and the cross rib is embedded into the inner groove. The cross rib comprises two perpendicular cross rib bodies, and each cross rib body comprises an arc section and a chute section. The two arc sections are arranged at the two ends of the chute sections correspondingly and embedded into the inner groove, chutes are formed in the tops of the chute sections, sand can fall into the chutes conveniently and are automatically stacked through gravity, and the sand is prevented from further falling off. The sand injection nozzle is used for sand leakage prevention of the large-calibre core shooting mould and is low in manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of cold shot mandrels for casting, and in particular relates to a leak-proof sand shot nozzle for large-caliber shot mandrels. Background technique [0002] At present, in order to improve the quality of sand shooting, most large-volume core shooting molds will choose to use large-caliber sand shooting nozzles (diameter above 40mm), and the materials of traditional sand shooting nozzles are mostly steel or metal, which is expensive to manufacture. In actual production, when the sand shooting mechanism is raised, before the sand shooting is ready, the sand is very easy to fall from the sand shooting nozzle due to the large diameter of the sand shooting nozzle. Once the sand falls, the sand core formed by sand shooting will not meet the requirements, and the quality will be seriously affected. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to improve the quality of sand shooting, most of the large-volume core shooting molds will choose to use large-diameter sand shooting nozzles (diameter above 40mm), and the materials of traditional sand shooting nozzles are mostly steel or metal, and the production cost is high. In actual production, when the sand shooting mechanism is raised, before the sand shooting is ready, the sand is very easy to fall from the sand shooting nozzle due to the large diameter of the sand shooting nozzle

Once the sand falls, the sand core formed by sand shooting will not meet the requirements, and the quality will be seriously affected

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