Forming method and device of blowing curing method 3D printing casting sand mold

Abstract

The invention relates to a forming method and device of a blowing curing method 3D printing casting sand mold. According to the method, when a lifting mechanism controls a work platform to move downwards by the distance of one layer thickness each time, a layer of crude sand is laid, a computer controls array nozzles to spray a binding agent to carry out layer-by-layer printing according to the section information of the current layer sand mold; after sand mold printing is finished, moving to the seal environment is achieved, compression air and catalyst gas are introduced to achieve sand moldcuring, remaining catalyst gas and non-curing crude sand are treated, and the needed sand mold is obtained finally. The invention further provides the forming system of the blowing curing method 3D printing casting sand mold. The forming system comprises a forming system body, a powder paving device, a sand storing device, the array nozzles, a blowing device, a liquid supply device and a tail gastreatment device. The method and device are adopted to manufacture the sand mold, the beneficial effects of being high in forming efficiency, high in curing speed, good in sand core collapsibility, high in casting size precision, good in surface quality and the like are achieved, and the method and device can be further popularized greatly in the casting enterprise.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a method for rapidly forming a moldless mold and a system for forming a moldless mold. Background technique [0002] Most of the current rapid prototype technology (rapid prototype) is based on layered manufacturing technology. Layered manufacturing technology is to decompose the processed object into multiple parallel thin layers. During the processing, these thin layers are formed layer by layer and superimposed to complete manufacture. This process is often realized with the help of computer technology. [0003] There are two common methods for rapidly manufacturing casting sand molds (including sand molds and sand cores, hereinafter collectively referred to as molds) with layered manufacturing technology: [0004] One is the selective sintering of coated sand with laser. The basic method is: first lay a layer of coated sand on the workbench, and heat it to a te...

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are the high resin content of the sand mold, the slow curing speed after the mold is processed, the difficulty of sand removal, and the high incidence of casting defects in the subsequent casting process

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