Folding device for sewing a second workpiece onto a first workpi

Details Folding device for sewing a second workpiece onto a first workpi Folding device for sewing a second workpiece onto a first workpi

1992-02-20

1993-02-23

Nerbun, Peter

Sewing

Special machines

Darning

112104, 112147, D05B 2100

Patent

active

051880440

ABSTRACT:
A second workpiece, for instance a pocket blank, is placed with its edge regions protruding on at least three sides, on a folding device which forms part of the automatic sewing machine. The folding device has a swingable outer frame which has a plurality of inwardly and outwardly moveable bend-over devices with Z-shaped angles which fold the protruding edge regions around a so-called "sword". Thereupon, the folded second material is placed on a first workpiece which is present in a receiving station. Then the folded edge regions are continuously fixed over their entire length by a holding element which is embedded in an insert plate provided within the receiving station. The holding element permits the bend-over devices to move back away from the workpieces into their starting position, without carrying the folded edge regions along with them and thereby unfolding the folded edge regions.

REFERENCES:
patent: 4793272 (1988-12-01), Scholl et al.
patent: 4967675 (1990-11-01), Goldbeck et al.
patent: 5016549 (1991-05-01), Sadlack et al.
patent: 5029542 (1991-07-01), Ferguson

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