Combination manufacturing method and device for injection mold with conformal cooling water path

Abstract

The invention discloses a combination manufacturing method and device for an injection mold with a conformal cooling water path. The device comprises a light beam focusing system, a close wave length coaxial vision positioning system, a powder pavement system and a gas protection system. The gas protection system comprises a sealed forming chamber, a shielding gas device and a powder purification device, wherein the shielding gas device is connected to one side of the sealed forming chamber, and the powder purification device is connected to the other side of the sealed forming chamber. The method is a combination processing method combined with the laser region selection fusion technology and the precision cutting processing technology, the advantages of the laser region selection fusion flexible processing are retained, and the feature that the precision of the high-speed cutting processing is good is given to play. In the process of region selection laser fusion processing, laser surface refusion processing is carried out on each layer, and the compactness and the surface quality of the mold are improved. The technique of density changing rapid manufacturing is adopted, and manufacturing efficiency is improved. Precision mold components with the interior special-shape cooling water path and the complex inner cavity structure can be integrally processed at a time.

Description

technical field [0001] The invention relates to laser selective melting technology, in particular to a compound manufacturing method and equipment for an injection mold with a conformal cooling waterway. Background technique [0002] Injection mold is a tool for producing plastic products. It is a device that injects resin material into a metal model to obtain a product with a certain shape. There are also devices such as cooling passages and heaters that allow cooling liquid (warm water or oil) to pass through the mold. During the production process, the material that has become a melt is injected into the main channel, and injected into the mold cavity through the runner and the gate. After the cooling stage, the mold is opened, and the ejector device in the mold ejects the ejector rod to push out the product. [0003] The technologies currently used to process injection molds include traditional machining techniques such as milling and wire cutting. Injection molds pro...

AI Technical Summary

Problems solved by technology

[0013] Although laser selective melting technology has many advantages, compared with traditional machined parts, the surface quality of its formed parts is poor

When forming complex shapes, it is necessary to add support, but when processing the inner cavity cooling water channel of the conformal mold, no support can be added

Therefore, it is also very difficult to process conformal molds with laser selective melting technology. There will be many defects in the process, and it is impossible to process molds that meet the requirements of dimensional accuracy and surface roughness.

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