CRAWLER-TYPE MIXING APPARATUS FOR LONG FIBER REINFORCED THERMOPLASTIC COMPOSITE MATERIAL

摘要

Provided is a crawler-type mixing apparatus for a long fiber reinforced thermoplastic composite material, the mixing apparatus comprising: a housing (1), a feeding port and a discharging port being respectively provided in two opposite side walls of the housing (1); and two crawler mechanisms distributed in parallel. The crawler mechanism is installed and fixed in the housing (1), a channel (15) for conveying a mixture (23) is formed between the two crawler mechanisms, protrusions (24) for extruding the mixture (23) in the channel (15) are provided on surfaces of crawler belts (14) of the crawler mechanisms, a closed structure is formed between edges of two sides of the channel (15), respectively and an inner wall of the housing (1), and openings of a feeding end and a discharging end of the channel (15) respectively correspond to the feeding port and the discharging port on a one-to-one basis and are in communication with the feeding port and the discharging port; and fiber yarn is cut off in a fixed-length manner by means of a roller cutting machine, is only mixed with thermoplastic resin preliminarily and is extruded in the mixing apparatus by means of the protrusions (24) of a wavy structure on an outer wall of the crawler belt, guaranteeing sufficient mixing of blanks, and also reducing shearing abrasion on fibers, such that the mechanical property of a product is remarkably improved.