Sewing group with a feed device

Details Sewing group with a feed device Sewing group with a feed device

1988-09-02

1989-06-13

Nerbun, Peter

Sewing

Special machines

Darning

112104, D05B 2100

Patent

active

048381888

ABSTRACT:
A sewing group is associated with a sewing machine and a feed device and comprises a work-holder drivable by two links supported on respective slides which are moved by separate stationary positioning motors which drive the respective slides. The maximum drive forces supplied in the two directions of movement of the feed device are as nearly equal as possible. Links are articulatedly connected with a work-holder for the transmission of exclusively axial forces. At the work-holder is pivoted one end of a guide arm structure whose other end is received for rotary movement in a longitudinal guide. Due to the equivalent load on the two links 13, 26 there result, for the positioning motors, equal drive conditions and equal maximum forces. The feed device is especially suitable for sewing groups with work-holders drivable by step motors.

REFERENCES:
patent: 4073252 (1978-02-01), Dobner et al.
patent: 4711189 (1987-12-01), Muller et al.
patent: 4732096 (1988-03-01), Mall

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