Silica sol mold shell drying system

Abstract

The invention discloses a silica sol mold shell drying system relating to the technical field of investment casting. The silica sol mold shell drying system comprises a circulating conveyor chain device, an air drying box, hanging mechanisms and a slurry dipping pool, wherein the circulating conveyor chain device is composed of a support frame and a conveyor chain and used for conveying a wax mold; the air drying box is used for air drying of a silica sol mold shell wrapping the wax mold; a chain body of the conveyor chain of the circulating conveyor chain device is evenly hinged to a plurality of hanging mechanisms used for hanging the wax mold at intervals through hinge assemblies; a hinge shaft of each hinge assembly is correspondingly parallel to the axis of the conveyor chain of the circulating conveyor chain device in the length direction; each hanging mechanism comprises an inserting assembly I and an inserting assembly II which can be correspondingly inserted to form a whole; and each inserting assembly I comprises an inserting pipe of which one end is correspondingly hinged with one hinge assembly. The silica sol mold shell drying system is simple in structure and high in production efficiency, the operation of automatically coating silica sol paint on the outer surface of the wax mold and automatically covering the silica sol paint with quartz sand can be achieved, and the labor intensity of operators is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of investment casting and lost foam investment casting, in particular to a silica sol mold shell drying system. Background technique [0002] Known, utilize silica sol shell investment casting to refer to to make fusible model with fusible material (such as industrial paraffin), coat several layers of silica sol paint on it, form an integral shell through drying and hardening, Because the wax mold is easily affected by high temperature, the silica sol mold shell needs to be air-dried to make the mold shell dry to improve the strength of the mold shell; In the slurry tank, a layer of silica sol paint is attached to the surface of the wax pattern, and then a layer of quartz sand is sprinkled on the surface of the silica sol paint, and then the wax pattern is hung on the circular conveyor chain, which drives the wax pattern into the air-drying box. The silica sol paint is air-dried to form a layer of silica so...

AI Technical Summary

Problems solved by technology

[0002] Known, utilize silica sol shell investment casting to refer to to make fusible model with fusible material (such as industrial paraffin), coat several layers of silica sol paint on it, form an integral shell through drying and hardening, Because the wax mold is easily affected by high temperature, the silica sol mold shell needs to be air-dried to make the mold shell dry to improve the strength of the mold shell; In the slurry tank, a layer of silica sol paint is attached to the surface of the wax pattern, and then a layer of quartz sand is sprinkled on the surface of the silica sol paint, and then the wax pattern is hung on the circular conveyor chain, which drives the wax pattern into the air-drying box. The silica sol paint is air-dried to form a layer of silica sol coating, and then circulates until the thickness of the silica sol coating meets the design requirements to form a silica sol mold shell. The labor intensity of the operator is relatively high, and the production efficiency is low. This phenomenon is known to those skilled in the art. Problems to be solved;

[0003] Chinese patent (publication number: CN202192232U) discloses a silica sol shell dipping system, which includes a catenary conveyor line, a hook, a spreader, a wax mold and a dipping pool, and the lower end of the hook is hinged to the upper end of the spreader , the wax model is connected to the lower end of the spreader, and rollers are set on the outer wall of the spreader, which can drive the wax model to rotate synchronously; in actual production, it is found that the connection between the patented wax model and the spreader is cumbersome, and the wax model is easily lost, which increases The labor burden of the operator;

[0004] Chinese patent (publication number: CN202192231U) discloses an automatic sand shower system for making silica sol shells. The patent includes horizontal catenary conveyor lines, hooks, hangers, wax models and sand shower machines. The wax models are in the horizontal direction. , into the sand shower machine, sand shower in the sand shower machine, in actual production, it is found that the patented wax pattern cannot achieve a fully and even sand shower effect, especially the bottom end of the wax pattern cannot effectively adhere to quartz sand and easily form slurry accumulation

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