Continuous fiber reinforced composite material additive manufacturing nozzle and printer

Abstract

The invention belongs to the field of additive manufacturing, and particularly relates to a continuous fiber reinforced composite material additive manufacturing spray nozzle and a printing machine. The continuous fiber reinforced composite material additive manufacturing spray nozzle and the printing machine have the advantages that the continuous fiber reinforced composite material additive manufacturing spray nozzle comprises an outer spray nozzle and an inner spray nozzle, the spray nozzles are simple in structure and are small, and the forming precision can be improved; the vertical distance from an outlet of the inner spray nozzle to an outlet of the outer spray nozzle can be adjusted, accordingly, the centering properties of fiber composite materials can be controlled, and the forming quality can be improved; the inner spray nozzle is connected into the outer spray nozzle in a threaded manner, an inner cavity II is arranged inside the inner spray nozzle, fiber yarns can penetrate the inner cavity II, an inner cavity I for accommodating resin materials is arranged inside the outer spray nozzle and is coaxial with the inner cavity II, and a connecting hole which is communicated with the inner cavity I is further formed in the outer spray nozzle and is particularly formed in a side surface of the outer spray nozzle; continuous fiber reinforced composite material additive manufacturing can be implemented by the printing machine.

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 nozzle and printer. Background technique [0002] Additive manufacturing technology is an emerging technology that is rapidly developing in the manufacturing sector. It is called "manufacturing technology with important symbolic significance of the third industrial revolution" and is listed as a key technology for strategic development by major developed countries. 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...

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 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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