Assembly of crumpling on chain / locking -type sewing machine

The utility model discloses an assembly of crumpling on chain / locking -type sewing machine, including interior presser foot assembly and eedle subassembly, interior presser foot assembly uses the cooperation with the eedle subassembly, it still includes outer presser foot assembly, outer presser foot assembly includes crank subassembly, linking arm, fixed connection piece and outer presser foot, the one end and the linkage of crank subassembly of linking arm, the other end is connected with the fixed connection piece, outer presser foot is fixed to be set up on the fixed connection piece, the bottom of outer presser foot is provided with the tooth of crumpling, the tooth of crumpling uses the cooperation with interior presser foot assembly. The advantage is: the utility model discloses simple structure and can once only make up the wrinkle and make up and make processing comparatively save time.