A liftable pattern for large cylinders

Abstract

The invention relates to a casting pattern, in particular to a formable pattern suitable for a large cylinder block; it comprises a pattern main body, a forming auxiliary component, a live material and a counterweight; the pattern main body includes a wooden component and a steel component. The steel body component includes a component main body and a plurality of profiled parts; the component main body is arranged in the inner cavity of the wooden component, the first end of the profiled part is connected with the component main body, and the The second end of the raised portion extends out of the inner cavity of the wooden member; the live material is detachably connected to the upper side of the wooden member; the second end is connected with a raised pad; the raised The auxiliary component is connected above the forming pad and cooperates with the forming pad to form the forming; the counterweight is arranged on the pattern main body; the present invention can efficiently carry out the forming of the middle ring of the large cylinder mold, The operation is simple, the difficulty is small, the sand mold and mold are not easily damaged, and the dimensional stability of the casting and the life of the mold are effectively improved.

Description

technical field [0001] The present invention relates to a casting pattern, in particular to a pattern having a forming function suitable for a large cylinder block. Background technique [0002] Large cylinders usually weigh more than 10 tons and have dimensions larger than 4m*3m*1.5m. The blanks of large cylinders are usually castings, and the most common molding method for castings is wood mold sand casting. Due to the large size of large cylinder castings, when using template modeling, the template cost is high and it is easy to deform, so it is usually produced without template modeling. And usually the casting direction is to choose the middle flange face down, and the middle flange face as the parting surface. At the same time, limited by the lifting weight of the crane in the factory, easy to operate and based on safety considerations, the parting method usually adopts the method of upper type + lower type + more than 1 middle ring. [0003] In the prior art, large...

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the problem that the last middle ring is difficult to form when the large cylinder mold is molded in the prior art, and provides a formable pattern and a formable method for the large cylinder. The pattern of the large cylinder is It is equipped with a matching pattern that can be molded, which is easy to manufacture and easy to use. It can effectively simplify the molding operation of large cylinders and reduce the quality problems and safety risks of castings caused by molding.

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