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

A shunt cone, multi-functional technology, applied in the direction of core, mold composition, casting and molding equipment, etc., can solve the problems of difficult sand core exhaust, low production qualification rate of motorcycle wheels, large deviation of product wall thickness, etc. Solve product size deviation and air hole problems, eliminate wheel hub air hole defects, and eliminate the effect of large size deviation

Inactive Publication Date: 2011-04-20
江苏中联铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003](1) The sand core does not have a large enough positioning surface, which leads to inaccurate positioning of the sand core and large deviation of product wall thickness;
[0004](2) unable to prevent sand core from floating during casting;
[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

Method used

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

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Embodiment Construction

[0022] Now in conjunction with example the present invention will be further described.

[0023] KVR wheel products have a hollow structure due to the middle hub, such as image 3 Shown, the assembly sketch map of product mold and splitter cone and sand core in the prior art is as Figure 4 shown.

[0024] The hollow structure of the middle hub of the wheel should be molded with a sand core, but because the diameter of the end surface of the through hole of the lower bearing is φ30mm, the contact surface between the sand core and the splitter cone is too small, and there is not a large enough positioning surface (such as Figure 4 The middle red mark indicates the assembly drawing of the diverter cone and the sand core), and the inaccurate positioning of the sand core leads to a large deviation in the wall thickness of the product. In addition, the material of the wheel casting is A356.2, and the density is 2.63g / cm 3 Left and right, the density is higher than that of the sa...

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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 witha 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 acooling 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/10B22C9/12B22C9/28
Inventor 谢建林
Owner 江苏中联铝业有限公司
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