This utility model discloses an extruder for preparing
polyamide materials, including an extruder body. A feed
pipe is connected to the upper end face of the extruder body, and a feed box is fixedly mounted on the upper end face of the feed
pipe. A horizontal plate is fixedly mounted on the upper end face of the feed box, and a first motor is mounted on the upper end face of the horizontal plate. A rotating shaft is mounted at the output end of the first motor, and the bottom of the rotating shaft extends into the feed
pipe. Spiral conveying blades are mounted on the outer wall of the rotating shaft, and a scraper is mounted on the outer side of the spiral conveying blades. Thus, when feeding material into the extruder body, the rotating shaft can be controlled by the first motor to rotate the spiral conveying blades, allowing the
raw material accumulated inside the feed box to quickly leak out. Simultaneously, a cylinder can be controlled to move the scraper downwards to reduce residue on the inner wall of the feed box, facilitating use.