A mold structure for making a mold for a sand casting of a casting and a design method thereof
By combining multi-layered external mold structure design with 3D printing technology, the problems of high 3D printing cost and large external mold error have been solved, achieving efficient, low-cost production of castings and a high pass rate.
CN122400510APending Publication Date: 2026-07-17GUIZHOU AEROSPACE FENGHUA PRECISION EQUIP CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUIZHOU AEROSPACE FENGHUA PRECISION EQUIP CO LTD
- Filing Date
- 2026-03-06
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing technologies, 3D printing for casting production is costly, and the external mold design has large errors, resulting in a high scrap rate and failing to meet the internal quality requirements of the castings.
Method used
The design employs a multi-layered external mold structure, including a pallet mold and a multi-section sand mold. Combined with 3D printing technology, positioning blocks and lifting holes ensure the accuracy of the casting wall thickness and gating position, thus avoiding errors.
Benefits of technology
It reduces casting production costs, increases the casting qualification rate, ensures the internal quality and dimensional accuracy of castings, and improves production efficiency.
✦ Generated by Eureka AI based on patent content.
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Figure CN122400510A_ABST
Abstract
本发明公开了一种制作铸件砂型模具的模具结构及其设计方法，模具结构包括托板模具与外模模具，托板模具用于制作砂型模具的托板，外模模具用于制作砂型模具的砂型外模，砂型外模装配在托板上形成砂型模具。设计方法包括以下步骤：S1:铸件工艺图纸的设计：根据所需“蘑菇型”产品的零件图转化为铸件图纸，根据铸件图纸完成铸件工艺图纸的设计；S2:新型的外模三维模型设计：将铸件工艺图纸设计完成后，将铸件外模设计成6节；S3:铸件模具工艺设计；S4:模型合型。本发明通过多层外模的方式保证铸件曲线部位实际浇注立筒与理论设计浇注对应的一致性；通过分层设计定位，有效地保证上下砂型外模的位置准确性和定位操作的轻便性，从而保证铸件壁厚的准确性。
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