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Apparatus and method for additive manufacturing

An additive manufacturing and barrel technology, applied in the field of additive manufacturing, can solve the problem of inability to effectively control the flow behavior of semi-solids

Active Publication Date: 2021-02-09
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide an additive manufacturing device and method to solve the problem that the semi-solid flow behavior cannot be effectively controlled in the prior art

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  • Apparatus and method for additive manufacturing
  • Apparatus and method for additive manufacturing

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Embodiment Construction

[0038] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0039] Such as figure 1 As shown in , it is a structural schematic diagram of an additive manufacturing device provided by the present invention. The additive manufacturing device includes a screw extrusion mechanism 1, a melting furnace 2, a holding furnace 3, a printing platform 4 and a control system 5, wherein:

[0040] The solid raw material (preferably solid metal in the present invention) is put into the melting furnace 2, and is heated and melted at a high temperature by the first heater 21 outside the melting furnace 2. The bottom of the inner cavity of the melting furnace 2 is provided with a feeding port 22, The inner cavity is also provided with a piston rod 23 that can move up and down, and the bottom of the piston rod 23 can abut against the feed port 22 for controlling the melt deliv...

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Abstract

The invention belongs to the technical field of additive manufacturing, and discloses an additive manufacturing device and method. The additive manufacturing device includes a screw extrusion mechanism, wherein: a melt inlet is provided in the first material cylinder, and a first insulation layer is provided on the outer periphery of the first material cylinder; a second insulation layer is provided on the outer periphery of the second material cylinder. Two insulation layers; the screw rod is located in the first barrel and the second barrel, the screw rod in the first barrel is provided with blades, and the screw rod in the second barrel is provided with threads; the first material The volume of the barrel is greater than that of the second barrel, the diameter of the blade is greater than that of the thread, and a torque sensor is connected to the top of the screw. The invention insulates the melt or semi-solid slurry and characterizes the viscosity state and flow state of the semi-solid through a torque sensor, thereby solving the problem that the flow behavior of the semi-solid cannot be effectively controlled in the prior art.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to an additive manufacturing device and method. Background technique [0002] Additive manufacturing technology is based on a digital model file, using powdered or filamentary metal or plastic and other bondable materials to form parts by layer-by-layer printing. [0003] Patent No. ZL103878370B discloses a 3D printing device for melting, extruding, beam-casting and three-dimensional stacking of wire-like raw materials. , The high-frequency sensor in the print head module heats and melts the metal wire, so that the metal wire becomes fluid or semi-liquid and extruded from the print head module. This method uses high-frequency induction heating instead of lasers, which can greatly reduce equipment costs; however, during the forming process, this device cannot control the primary phase morphology of the metal solidification structure, and thus cannot control the liquid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/115B33Y10/00B33Y30/00
CPCB22F3/003B22F3/115B33Y10/00B33Y30/00
Inventor 胡小刚朱强李忠徐振
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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