Continuous carbon fiber 3D printing device

Abstract

The invention discloses a continuous carbon fiber 3D printing device. The device comprises a spray cavity, a nozzle, fiber yarns, a liquid supplying pump, a resin tank and a laser device, wherein the spray cavity adopts a cylindrical structure with a cavity, and is provided with a first end and a second end; the diameter of the first end is larger than that of the second end; a first inlet is formed in the upper part of the first end; an outlet is formed in the lower part of the second end; a second inlet is formed in a lateral side of the first end; the second inlet communicates with the first inlet and the first outlet to form a three-way structure; the nozzle is connected with the outlet of the spray cavity; the fiber yarns penetrate through the spray cavity; the resin tank is connected with an inlet of a liquid supplying pump through a hose; the outlet of the liquid supplying pump is connected with the second inlet of the spray cavity; the second end of the spray cavity is coated with a heating coil; a supporting frame is also arranged at the second end of the spray cavity, near the nozzle; one end of the supporting frame is fixedly connected with the spray cavity, and the other end of the supporting frame is fixedly connected with a collimating mirror; and the laser device is connected with the collimating mirror through an optical fiber. Through the adoption of the device disclosed by the invention, rapid continuous printing can be realized.

Description

Technical field [0001] The invention relates to the field of additive manufacturing, and more specifically to a continuous carbon fiber 3D printing device. Background technique [0002] Additive manufacturing technology is an emerging technology that is developing rapidly in the manufacturing field. It is called "manufacturing technology with important symbolic significance of the third industrial revolution", and major developed countries list 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 three-dimensional rapid prototyping manufacturing technology omits the processing and manufacturing of product molds, which greatly shortens the product development cycle in ti...

AI Technical Summary

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 inside of the fiber ribbon, and the fiber filaments cannot be bonded together by the resin, thereby forming a cavity inside the printed workpiece, which seriously reduces the mechanical properties of the workpiece. The additive manufacturing of continuous fiber reinforced composite materials is easy to plug. As a result, the fiber cannot be ejected or the resin overflows from the inside of the nozzle

In addition, due to the slow curing of general resin, it affects the molding speed

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