Additive manufacturing sprayer for fiber reinforced composite material based on ultrasonic enhancing

Abstract

The invention belongs to the field of additive manufacturing and relates to an additive manufacturing sprayer for a fiber reinforced composite material based on ultrasonic enhancing. The additive manufacturing sprayer for the fiber reinforced composite material based on ultrasonic enhancing comprises a sprayer body, an inner cavity, a heat conducting block, a cap, a fiber sprayer body, a fiber throat pipe, a polytetrafluoroethylene pipe I, a resin sprayer body, a resin throat pipe, a polytetrafluoroethylene pipe II, heating rods, temperature sensors and ultrasonic generators, the resin and fiber bonding effect can be improved, sprayer blockage is prevented, and the sprayer body can be conveniently cleaned. The sprayer body is detachably connected to the lower end of the inner cavity and is sleeved with the heat conducting block; the heating rods and the temperature sensors are arranged on the heat conducting block in a nested manner; the upper end of the inner cavity is detachably connected with the cap; the fiber throat pipe and the resin throat pipe are both detachably connected to through holes of the cap; the through hole connected with the resin throat pipe is further detachably connected with the resin sprayer body; the polytetrafluoroethylene pipe I is arranged in the fiber throat pipe in a sleeved manner; the lower end of the fiber throat pipe is detachably connected with the fiber sprayer body; the polytetrafluoroethylene pipe II is arranged in the resin throat pipe in a sleeved manner; and a cavity is formed after the inner cavity is connected with the cap.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and more specifically relates to a nozzle based on ultrasonically reinforced fiber-reinforced composite material additive manufacturing. 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 produ...

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

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