Sand mould structure of one-piece cylinder cover

Abstract

The invention relates to a sand mould structure of a one-piece cylinder cover. The sand mould structure of the one-piece cylinder cover comprises an upper mould, a side mould and a lower mould; the side mould is integrated on one side surface of the upper mould, the upper mould and the lower mould are respectively provided with one inner cavity, and the two inner cavities are oppositely arranged;an air inlet passage core, an air exhaust passage core, a water cavity core and a base plate core are arranged in the inner cavity of the lower mould, a core head of an air inlet end of the air inletpassage core extends towards the direction of the base plate core and is connected with the base plate core to form an air inlet core head, the water cavity core extends towards a direction far away from the air inlet core head and is connected with the core head extending toward a direction of an exhaust port of the air exhaust passage core to form a built-in core head, the built-in core head andthe upper mould are in fit and connected, and the core head, extending along the length direction, of the water cavity core is connected with the base plate core. The sand mould structure of the one-piece cylinder cover is convenient in sand cleaning and can effectively avoid the problems of broken cores and raised cores.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a sand mold structure of a one-piece cylinder head. Background technique [0002] The cylinder head is a key component of a diesel engine, and it is divided into a single cylinder head and a one-piece cylinder head. The one-piece cylinder head is mostly used for medium and low-speed diesel engines, and the one-piece cylinder head is mostly used for medium and high-speed diesel engines. With the continuous improvement of national emission standards, higher requirements are placed on the design of the one-piece cylinder head, the thickness of the air passage wall is getting thinner, and the shape of the water cavity is more conformal. For example, for an in-line six-cylinder diesel engine, the internal structure of the one-piece cylinder head casting mainly includes an intake port, an exhaust port, an upper water chamber, a lower water chamber, six fuel injection holes, and a weigh...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a sand mold structure for the one-piece cylinder head in view of the difficulty of sand cleaning and the prone to problems such as broken cores and floating cores when using 3DP printing technology to print the one-piece cylinder head in the prior art

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