Cold box core shooting device

Abstract

The invention relates to a cold box core shooting device, which comprises a core box possessing a sand core cavity, a sand shooting mechanism and a sand adding mechanism. The sand shooting mechanism comprises a shooting chamber, a movable inlet valve cover arranged on the upper of the shooting chamber and capable of moving along a horizontal direction, an air blowing mechanism connected with the movable inlet valve cover. The sand adding mechanism comprises a sand adding hopper arranged on the right upper of the shooting chamber, a butterfly valve arranged on the lower part of the sand addinghopper for controlling the opening and shutting. When sand is added by the core shooting device, the movable inlet valve cover is positioned at one side of the shooting chamber, the butterfly valve is opened, the adding sand hopper is communicated with the shooting chamber; when sand is shot by the core shooting device, the butterfly valve is closed, the movable inlet valve cover is compacted on the upper of the shooting chamber. According to the invention, a sealed butterfly valve and a sand shooting cylinder mechanism in the present cold box core shooting device are eliminated, a sandblasting phenomenon can be avoided during former sand shooting, the work of daily equipment maintenance is minimized and the stability of the equipment is improved; in addition, the maintenance workload during the operation can be mitigated.

Description

technical field [0001] The invention relates to a core shooting device, in particular to a core shooting device improved from a cold box core shooting machine using a sealing butterfly valve and a sand shooting cylinder mechanism. Background technique [0002] At present, the structure of the fixed-head type cold box core shooting machine in the prior art mainly includes: a shooting chamber connected with the core box, a sand shooting cylinder arranged on the upper part of the shooting chamber, and the sand shooting cylinder passes through A sealing butterfly valve is connected with the injection cavity, so that the injection cavity forms a sealed airtight chamber. [0003] During the sand shooting process, the compressed air enters through the side of the sand shooting cylinder to press the molding sand into the core box to complete the sand shooting action. When this mechanism shoots sand, because the butterfly valve is squeezed by compressed air, the surface of the butte...

AI Technical Summary

Problems solved by technology

When this mechanism shoots sand, because the butterfly valve is squeezed by compressed air, the surface of the butterfly valve is very easy to stick to the sand used for core making, so that the butterfly valve will wear the seal of the butterfly valve when it is in motion, causing the sealing effect to fail after the seal is damaged, even when the sand is shot. , Molding sand is ejected from the damaged part of the seal, polluting the equipment, increasing the cleaning workload, and affecting the stability of the equipment

In addition, the sand shooting cylinder is full of molding sand, and it is easy to stick to the molding sand. In order not to affect the core-making quality, it is necessary to manually enter the equipment in each shift to dismantle it, take it out, clean it, and install it when the other shift starts work. It is very inconvenient and the workload is high. Big

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