Chain-type stitch button-sewing machine

Application Number: 00108156
Application Date: 2000.05.08
Publication Number: 1273291
Publication Date: 2000.11.15
Priority Information: 2000/4/10 JP 108516/00; 1999/5/6 JP 126273/99
International: D05B3/12;D05B65/00
Applicant(s) Name: Juki Corp.
Inventor(s) Name: Shiina Takayuki;Sakamoto Shinichi Oda Hiroshi
Patent Agency Code: 72001
Patent Agent: zhang tianan
Abstract To stabilize the thread fastening of button sewing to a sewed matter and ensure a fixed thread remaining length by successively driving the driving means of a thread cutter for cutting a thread and the driving means of a pushup device for pushing up a button after chain stitch when stopping the drive of a sewing machine mechanism. When a button sewing is performed in a sewing machine for button sewing by chain stitch, and the drive of a sewing machine mechanism is stopped, a proper thread fastening is performed by a thread fastening device, and a thread cutter and the actuator 32 of a pushup device are driven by a CPU. Accordingly, a drive arm 25 is pulled down to rock a rocking arm 2, and a thread cutting rotating arm 11 is rotated, and the thread cutting member 16 of the thread cutter is pushed to the part under a needle bar to cut the needle thread in a desired length. A pushup member 22 supported on a mount base 20 of the pushup device is pushed up through engagement levers 24, 23 by the rocking of the rocking arm 2 to release the sewed matter.