Additive manufacturing apparatus of continuous fiber reinforced composite material

Abstract

The invention discloses an additive manufacturing apparatus of a continuous fiber reinforced composite material. The apparatus has a simple nozzle structure and smaller dimension, and can improve moulding precision; a vertical distance between an outlet of an internal nozzle and an outlet of an external nozzle is adjustable, in order to control centering of the fiber composite material, and improve moulding quality. An additive manufacturing nozzle of the continuous fiber reinforced composite material is installed on a two-dimensional moving platform, a workbench is arranged below the additive manufacturing nozzle of the continuous fiber reinforced composite material, and the workbench is installed on a one-dimensional moving platform; a filament extruding mechanism, a heating device and a temperature monitoring device are installed on the additive manufacturing nozzle of the continuous fiber reinforced composite material and follows motion of the two-dimensional moving platform; the heating device is used for heating the additive manufacturing nozzle of the continuous fiber reinforced composite material; a temperature monitoring device is used for measuring the temperature of the additive manufacturing nozzle of the continuous fiber reinforced composite material; a controlling means is used for controlling the working states of the two-dimensional moving platform, the one-dimensional moving platform, the filament extruding mechanism, the heating device, and the temperature monitoring device.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and more specifically relates to a continuous fiber reinforced composite material additive manufacturing device. Background technique [0002] Additive manufacturing technology is an emerging technology that is rapidly developing in the field of manufacturing. It is called "manufacturing technology with important symbolic significance for the third industrial revolution", and major developed countries have listed it as a key technology for strategic development. At present, additive manufacturing technology relies on cutting-edge technologies in multiple disciplines, and has been applied in aerospace technology, automobile and home appliance manufacturing, biomedicine, food processing and other fields. Compared with traditional manufacturing technology, additive manufacturing 3D rapid prototyping manufacturing technology omits the processing and manufacturing of product molds, thus greatly s...

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Problems solved by technology

[0004] However, the current continuous fiber reinforced composite material additive manufacturing technology research is less, still in the research and development stage, there are many problems

For example, the resin cannot fully enter the interior of the fiber ribbon, and the fiber filaments cannot be bonded together by the resin, thus forming a cavity inside the printed workpiece, which seriously reduces the mechanical properties of the workpiece

In addition, the additive manufacturing of continuous fiber-reinforced composites is prone to clogging, resulting in the inability of fibers to come out or resin overflowing from the inside of the nozzle

[0005] The invention patent with the patent number 201611004458.X, a nozzle suitable for additive manufacturing of continuous fiber reinforced composite materials and the invention patent with the patent number 201611026706.0, a nozzle suitable for 3D printing of continuous fiber reinforced The nozzle is based on the additive manufacturing of continuous fiber reinforced composite materials, but the structure of the nozzle is more complicated, resulting in a larger size of the nozzle and a larger volume of the cavity containing the resin material. In addition, the distance between the outlet of the inner nozzle and the outlet of the outer nozzle cannot be adjusted. Controlling the Alignment of Fiber Composites

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