Main-presser driving apparatus for automatic binding sewing mach

Details Main-presser driving apparatus for automatic binding sewing mach Main-presser driving apparatus for automatic binding sewing mach

1992-10-01

1993-05-18

Nerbun, Peter

Sewing

Special machines

Darning

112113, 112163, 112114, D05B 1900

Patent

active

052111199

ABSTRACT:
A main-presser driving apparatus for an automatic binding sewing machine including two sewing needles for carrying out a binding sewing operation and a pair of main pressers for pressing a base cloth on which a binding cloth is to be sewn, the main pressers being supported by a frame of the sewing machine such that the two pressers are opposed to each other and are movable independently of each other along a directional line in which the two pressers advance toward, and retract away from, each other, the driving apparatus including a pair of drive devices each of which includes an actuator for displacing a corresponding one of the main pressers in the above-indicated direction independently of the other of the main pressers, each actuator being controllable to be stopped at a desired operational position; a needle distance specifying device specifying a distance between the two sewing needles; a control command producing device producing, based on the specified needle distance, a control command for each of the two actuators of said pair of drive means; and a control device driving each of the two actuators according to the produced control command and thereby displacing a corresponding one of the two main pressers along said directional line to a position corresponding to the produced control command.

REFERENCES:
patent: 3747545 (1973-07-01), Nicolay et al.
patent: 4651664 (1987-03-01), Bergvall
patent: 4665843 (1987-05-01), Goldbeck et al.
patent: 5092258 (1992-03-01), Goldbeck et al.
patent: 5109785 (1992-05-01), Inoue et al.

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