CONTINUOUS WEFT INSERTING AND BORDER LOCKSTITCHING DEVICE BASED ON THREE-DIMENSIONAL ANNULAR KNITTING MACHINE AND WEFT INSERTION METHOD THEREFOR

摘要

Disclosed are a continuous weft inserting and border lockstitching device based on a three-dimensional annular knitting machine and a weft insertion method therefor. In the weft insertion method, a stepping motor (1) is connected to a left border lockstitching air cylinder (2) and drives the rotation thereof; the left border lockstitching air cylinder (2) is mounted on a left border lockstitching air cylinder fixing member (14); a left border lockstitching laser distance measurement device (10) monitors the stroke of a piston rod of the left border lockstitching air cylinder (2); a right border lockstitching air cylinder (5) is mounted on a right border lockstitching air cylinder fixing member (15); a right border lockstitching laser distance measurement device (11) monitors the stroke of a piston rod of the right border lockstitching air cylinder (5); a weft insertion rapier air cylinder (3) and a rapier (4) are respectively mounted on a rapier and an air cylinder fixing member (17); a rapier laser distance measurement device (9) monitors the stroke of the rapier (4); a beating-up heald frame (18) is fixed on a rack (19); a right border pressing air cylinder (6) is mounted on a right border pressing fixing member (16) and is connected to a U-shaped presser (7); the U-shaped presser (7) presses against a cloth fell (8); the cloth fell (8) is located on the rack (19); and a left border pressing laser distance measurement device (12) monitors the stroke of the cloth fell (8). A weft locking device fixes an outer weft of a warp layer, thus preventing a weft motion caused by the reciprocating motion of the rapier and increasing the success rate of weft insertion.