Mould plasma 3D printing equipment and mould plasma 3D printing method

Abstract

The invention discloses a mould plasma 3D printing equipment and a mould plasma 3D printing equipment method. The equipment consists of a monitoring system, a plasma beam processing system, a horizontal printing table for placing a to-be-formed mould and a temporary fixing member, wherein the plasma beam processing system consists of a plasma generator, a printing position adjusting device, a gas supply device and a powder supplier; the printing position adjusting device comprises a horizontal moving device and a printing distance adjusting device; the monitoring system comprises a horizontal movement controller, a temperature detection unit, a distance detection unit and a printing distance adjustment controller; the temperature detection unit and the printing distance adjustment controller form a temperature control device. The method comprises the following steps: (I) obtaining three-dimensional stereo model and carrying out hierarchical slicing treatment; (II) scanning path filling; (III) printing path obtaining; and (IV) carrying out layer-by-layer printing from bottom to top. The equipment and the method disclosed by the invention have the advantages of reasonable design, simplicity and convenience in operation, high efficiency and good use effect; and moreover, the forming process is directly carried out in the atmospheric environment, and the formed mould has good quality.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a mold plasma 3D printing device and method. Background technique [0002] Mold refers to various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. In short, a mold is a tool used to shape a product. Mold is an important tool in product molding and processing, and the cost accounts for 10% to 30% of product cost. The molding surface of the mold refers to the surface used to shape the product (also called the product), and the molding surface is the surface that directly contacts the molded product. Wherein, the molding surface of the cavity refers to the outer surface for molding the product, and the molding surface of the core is the inner surface for molding the product. The processing quality, processing accu...

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Problems solved by technology

The Chinese invention patent application document published on August 27, 2014 with the publication number CN104004966A discloses a casting preparation method for stamping dies. Heat treatment and multi-pass processing are required, the designability of the mold and its performance is poor, and the manufacturing process is cumbersome

The Chinese invention patent application document with the publication number CN104057271A published on September 24, 2014 discloses a powder metallurgy preparation method for cemented carbide tools and molds. Since each mold product corresponds to a pair of molds, the shrinkage of different alloy powders The coefficients are different, and each corresponding mold needs to be designed, resulting in high mold production costs; mold preparation time is long, and the preparation efficiency is low; when powder is filled, under the action of friction, the corners are filled unevenly, resulting in uneven strength , affecting the service life of mold products

In the invention patent "Moulds and methods for making molds and casting methods" published on August 13, 2008 with the publication number CN101242923A, a modular group and method of molds are disclosed. The modular group and Method: When preparing molds, the processing accuracy and matching dimension accuracy of each module are required to be very high, and the fixing strength and precision requirements of each module are also very high, resulting in high mold preparation costs

But at present, there are three main problems in the selective electron beam rapid prototyping technology: first, the electron beam rapid prototyping technology needs a vacuum environment to form the energy source electron beam and avoid the oxidation of metal parts during the forming process

This makes the structure of the electron beam rapid prototyping equipment complex, the size of the molded parts is limited, and the molding equipment is expensive; second, the electron beam rapid prototyping technology requires a powder spreading system or a molding material supply system

This makes the structure of the electron beam rapid prototyping equipment complex, not only the size of the formed parts is limited, but also the forming efficiency is low; third, in order to ensure the mechanical properties of the parts, the electron beam rapid prototyping technology requires spherical metal powder with good fluidity

This makes SLM rapid prototyping equipment expensive to run

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