Economical sand mold casting equipment

Abstract

The invention discloses economical sand mold casting equipment. The equipment comprises an operation platform. The top side of the operation platform is fixedly provided with a vertical rod. A supportrod and a transverse rod are fixedly mounted on the side where the vertical rod is located. The transverse rod is located above the support rod. A support hole is formed in the top side of the support rod. A funnel is movably mounted in the support hole. The two sides of the funnel extend out of the support hole. A storage tank is fixedly mounted at one end of the transverse rod. A sand conveyingpipe is fixedly mounted on the bottom side of the storage tank. The top end of the sand conveying pipe communicates with the interior of the storage tank. The bottom end of the sand conveying pipe extends into the funnel. An adjusting hole is formed in the inner wall of the side, close to the vertical rod, of the sand conveying pipe. Through a sand core or a polygonal cavity in the provided sandcore, stress cracks of annular casting products generated by shrinkage of the inner cavity due to blocking are greatly reduced, especially for shaft hole portions of valve bodies, repair and scrappingof machining defects are reduced, meanwhile, the molding sand consumption can be reduced, the production cost is reduced, the funnel can be automatically fed during sand conveying, the sand leakage efficiency is high, and manpower is saved.

Description

technical field [0001] The invention relates to the technical field of sand mold steel casting production and manufacturing, in particular to an economical sand mold casting equipment. Background technique [0002] The inner cavity of existing sand casting ring castings usually adopts integral sand cores or built-in sand cores. The strength of the inner cavity sand is usually consistent with the outer molding sand strength. In order to improve the yield, some sand cores are added to the inner cavity sand core. Such as coke block, foam block and other materials, when the existing ring castings are produced, the appearance and sand core are made of the same ratio of molding sand, and the inner cavity molding sand has high strength, even if some such as coke block, foam block, etc. are added to increase the yield. materials, but because the number of places where these materials are placed is affected by human factors, there is great uncertainty, so the molding sand has poor yi...

AI Technical Summary

Problems solved by technology

[0002] The inner cavity of existing sand casting ring castings usually adopts integral sand cores or built-in sand cores. The strength of the inner cavity sand is usually consistent with the outer molding sand strength. In order to improve the yield, some sand cores are added to the inner cavity sand core. Such as coke block, foam block and other materials, when the existing ring castings are produced, the appearance and sand core are made of the same ratio of molding sand, and the inner cavity molding sand has high strength, even if some such as coke block, foam block, etc. are added to increase the yield. materials, but because the number of places where these materials are placed is affected by human factors, there is great uncertainty, so the molding sand has poor yield, and resistance is generated during the free solidification and shrinkage process, resulting in the formation of stress cracks due to the resistance of the inner cavity shrinkage

[0003] The publication number is CN108160947A, which discloses an automatic sand casting device, which includes a funnel, a transmission device, a fixing frame and a shock pressure device. , so that the sand density of each part of the sand mold is the same, but when the sand is sent by the funnel, the sand in the funnel needs to be frequently filled manually after delivery, and the material cannot be fed automatically, which wastes manpower, and the sand is easy to accumulate in the funnel, even Agglomerated, so it cannot meet the needs of use

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