Intelligent conformal cooling channel of mold and manufacturing method thereof

Abstract

The invention belongs to the field of mold cooling channels and discloses an intelligent conformal cooling channel of a mold and a manufacturing method thereof. According to the intelligent conformalcooling channel, a memory alloy coating layer is arranged on the inner wall of the conformal cooling channel; the coating layer senses the internal temperature of the conformal cooling channel and conducts shape change according to the temperature so as to make the flow, flow velocity and flow condition of cooling liquid in the cooling channel change. The invention further discloses the manufacturing method of the intelligent conformal cooling channel. Through the intelligent conformal cooling channel of the mold and the manufacturing method thereof, intelligent change of the internal shape ofthe cooling channel is achieved, accurate and high-efficiency cooling is achieved, the cooling efficiency is improved, and the overall cooling effect of the mold is uniform and rapid.

Description

technical field [0001] The invention belongs to the field of mold cooling channels, and more specifically relates to a mold intelligent conformal cooling channel and a manufacturing method thereof. Background technique [0002] Mold is the mother of modern industrial production and the basic process equipment of modern manufacturing industry. Most parts of industrial products rely on mold technology to produce. Among them, the cooling system of the mold plays a vital role in the life of the mold, the production efficiency and quality of the product. Compared with the traditional straight-hole cooling runner, the conformal cooling system fits the surface of the mold cavity better because its axis is designed based on the shape change of the mold cavity, which can improve the cooling efficiency and quality of the cooling system. The emergence of additive manufacturing (3D printing) technology has made the manufacture and use of conformal cooling channels more popular. Howeve...

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Problems solved by technology

However, this cooling method still has the following problems: First, the conformal cooling channel is usually designed through 3D modeling software based on the simulation results of mold flow analysis software such as Moldflow, and then processed by additive manufacturing. The process is complicated. Therefore, there is a risk that the formed conformal cooling channel does not meet the actual needs; secondly, for the extremely complex conformal cooling channel formed by the additive manufacturing process, especially after stress relief heat treatment, it is difficult to clean the residual powder in the channel and It takes a long time, which increases the delivery cycle of the mold to a certain extent; finally, because the physical parameters of each injection molding material such as viscosity and melting point are different, the design of a certain mold cooling channel may only meet the requirements of a certain material. Injection molding, in simple terms, means that a set of molds with conformal cooling structure may only be able to inject a certain material, which reduces the universality of the mold and increases the cost of the mold.

At present, there is no application of memory alloys and conformal cooling channels at home and abroad. The existing conformal cooling channels cool slowly and cannot be specially treated for local overheating, resulting in local overheating in some places in the mold and poor heat distribution. Uniformity, which affects the quality of molded products

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