Multifunctional sprue spreader system for solving positioning and exhausting of sand core

Abstract

The invention relates to a multifunctional sprue spreader system, in particular to a multifunctional sprue spreader and sand core system for solving positioning and exhausting of a sand core of a wheel of an integral aluminum alloy motorcycle cast by a gravity casting center. The system comprises a sprue spreader and a sand core, and is characterized in that a lug boss is increased based on a common sprue spreader, the lower end face of the lug boss is tightly clung to the upper end face of the assembled sand core, and a position of the sand core corresponding to the lug boss is provided with a guiding groove corresponding to the lug boss; and simultaneously, the position of a contact wall of the sprue spreader and the sand core is provided with an exhaust vent which is communicated with a cooling pipe of the sprue spreader. The system effectively solves the problems of positioning, floating and exhausting of the sand core, and eliminates the defects of large wall thickness deviation of wheel casting products and air vents of wheel hubs.

Description

technical field [0001] The invention relates to a multifunctional splitter cone system, in particular to a multifunctional splitter cone and sand core system which solves the positioning and exhaust of gravity casting center casting integral aluminum alloy motorcycle wheel sand cores. Background technique [0002] There is a type of central casting monolithic aluminum alloy motorcycle wheel product, in which the middle hub is a hollow structure, and the positioning surface of the sand core and the splitter cone used in casting is too small, which brings three major problems to the casting process: [0003] (1) The sand core does not have a large enough positioning surface, resulting in inaccurate positioning of the sand core and large deviation of product wall thickness; [0004] (2) It is impossible to prevent the sand core from floating during the casting process; [0005] (3) Due to the small positioning surface, it is difficult to exhaust the sand core for the center ca...

AI Technical Summary

Problems solved by technology

[0003] (1) The sand core does not have a large enough positioning surface, resulting in inaccurate positioning of the sand core and large deviation of product wall thickness;

[0004] (2) It is impossible to prevent the sand core from floating during the casting process;

[0005] (3) Due to the small positioning surface, it is difficult to vent the sand core for the center casting process

[0006]Due to the existence of the above three major problems, the production pass rate of this type of motorcycle wheel is low, which limits the marketization process of this type of product

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