Multi-material 3D printer

Abstract

The invention belongs to the technical field of advanced manufacturing, and particularly relates to a multi-material 3D printer. The multi-material 3D printer comprises a supporting frame, a spray head and a bottom plate, wherein the bottom plate is arranged at the position, close to the bottom face of the supporting frame, in the supporting frame; the top of the supporting frame is fixedly connected with a first guide rail; the interior of the first guide rail is slidably connected with a first sliding block; a second guide rail is arranged on the surface of the first sliding block; the inner bottom surface of the second guide rail is in sliding connection with a second sliding block; the bottom face of the second sliding block is fixedly connected with a support rod; the spray head is fixedly connected to the bottom surface of the supporting rod; a guide block is arranged in the spray head; by means of the multi-material 3D printer, automatic opening and closing of a spraying hole of a 3D printer are effectively achieved, the problem that when the position of the spraying head is switched, remaining molten materials in the spraying hole drip and wiredraw are avoided, meanwhile, it is guaranteed that the remaining molten materials are kept in a high-temperature state, the bottom hardening phenomenon of the remaining molten materials is avoided, and the product quality is improved.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing technology, in particular to a multi-material 3D printer. Background technique [0002] 3D printer, a machine of rapid prototyping technology, is a technology based on a digital model file, using bondable materials such as powdered metal or plastic, to construct objects by layer-by-layer printing. [0003] According to CN105538713A, a multi-material 3D printer, by integrating the feeding drive device with the nozzle, the nozzle corresponds to a plurality of material storage tanks, and when the printing material needs to be switched, the valve controller of the corresponding material works, which can realize the different materials. The seamless switching between them, while the material is printed under the drive of the feeding drive device, the valve controller is located on the discharge port, which reduces the weight of the printer nozzle. [0004] However, in the prior art, 3D printers h...

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the existing technology, the 3D printer has the following problems. First, the wire drawing. During the 3D printing process, the product will have many traces of plastic, especially when the nozzle jumps from one place to another. The reason The reason is that the remaining material inside the nozzle is easy to drip downward. During the dripping process, along with the movement of the nozzle, there will be a problem of wire drawing. Although many solutions have been proposed to improve the moving speed of the nozzle or the retraction of the printer itself, the above-mentioned The solution cannot completely solve the problem of wire drawing or high cost. The multi-material 3D printer proposed by the present invention

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