A dipping device and method for preparing 3D printing consumables

Abstract

The invention provides an impregnation device and method for preparing 3D printing supplies. The device comprises a closed shell with an insulation layer, and a fiber preheating mouth mold, a tensionroller, a guide roller, a fish shuttle type impregnation roller, all stages of guide mouth molds and a final mouth mold arranged in the shell in sequence; the fish shuttle type impregnation roller isa core part of the device; the device, as a main part of a supply production line, can greatly retain the main body strength of fibers and improve the impregnation quality of the fibers, so that the equipment guarantee is provided for stable production; and the length of manufacturing equipment is shortened to provide space for further miniaturization transformation of the equipment.

Description

technical field [0001] The invention relates to a glue dipping device and method for preparing 3D printing consumables, belonging to the field of additive manufacturing. Background technique [0002] Continuous fiber-reinforced special engineering plastic consumables are composed of special engineering plastics with high melting temperature and high body strength and continuous fibers. It is one of the more commonly used raw materials for products with higher and better performance, and it is also the basic material for parts. The material properties affect the mechanical properties and performance of parts. [0003] At present, the preparation of consumables generally adopts the melt prepreg method, which is to apply tension, unfold, prepreg in molten resin, and shape the die to realize the compounding of raw materials and the setting of the diameter. The dipping roller generally used in the prior art is composed of a cross-sectional circular fixed roller or two movable ci...

AI Technical Summary

Problems solved by technology

The dipping roller generally used in the prior art is composed of a cross-sectional circular fixed roller or two movable circular movable rollers. After the fiber is subjected to traction, the contact area on the surface of the roller is very small. Generally, the contact path does not exceed the circumference of the roller. At the same time, the small contact area needs to bear the traction tension of the equipment, so that the fiber bundles will be severely broken after being squeezed and rubbed, which will affect the mechanical strength of the wire. The above dipping roller makes it difficult to infiltrate the fibers, and there are often dry yarns inside the tow. At the same time, the thermoplastic resin has a high molding temperature and melt viscosity, which requires a long manufacturing line and occupies a large area

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