Method and apparatus for forming and stacking a folded sewn ply

Details Method and apparatus for forming and stacking a folded sewn ply Method and apparatus for forming and stacking a folded sewn ply

1989-11-03

1992-06-23

Nerbun, Peter N.

Sewing

Elements

Frames

11212112, 11212129, 112141, 112147, 112DIG2, D05B 2100

Patent

active

051233673

ABSTRACT:
An automatic apparatus and method for forming a V-top shirt pocket or similar article with a folded region, sewing a stitch to hold the fold, and stacking a plurality of same with distributed hem build-up. An unfolded ply of material is provided to a folding station, which forms a tucked edge fold in the material. The ply is then held at the tucked edge, and the opposite end is folded over a folding rod with an air jet. Holding fingers descend to hold the fold in the ply. A transport carriage arrives at the folding station to retrieve the folded, edge-tucked ply. The transport carriage includes a clamp, which clamps on the folded, edge-tucked ply to hold the fold and edge tuck as the folding station elements retract. The transport carriage carries the folded, edge-tucked held ply through a sewing station in synchronization with a sewing machine, where a V-shaped hem is sewn. The transport carriage is biased against a pattern cam as the ply is carried through the sewing station and sewn, to form a sewn pattern. The transport carriage then carries the ply to a stacking station. At the stacking station, the sewn pocket is deposited atop a stack plate. Holding fingers positively hold the sewn pocket against the stack plate. The transport carriage returns to the folding station to retrieve another ply. The stack plate withdraws, and the holding fingers positively urge the sewn pocket against the top of a stack. An improved stack table holding the stack of plies descends and rotates 90 degrees, to distribute build-up in stack thickness due to the folded sewn region.

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Brochure entitled "Jet Sew V-Top Pocket Hemmer" by Jet Sew.

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