US 5,178,193 AGranted

Manufacturing a long bias cloth from a circular loom by spiral cutting

AssigneeAshimori Kogyo Kabushiki Kaisha

InventorsAkihiro Sato, Kazuhiro Koshino, Hideyuki Mori

Life of this patent

Estimating the term…

Loading patent…

Abstract

Continuous production of a long bias cloth is accomplished by manufacturing a tubular fabric on a circular loom having a circular frame, reeds arranged on the frame and a shuttle for a weft rotatable along the frame. The fabric is removed from the loom under tension by a removal device comprising a primary pillar core with a plurality of caterpillars adjacent its outer periphery. Removal under tension prevents the formation of any edge portion causing folds and wrinkles in the tubular fabric. The tubular fabric is then spirally cut by a cutting device which has a secondary pillar core with a plurality of feed rolls adjacent its outer periphery. The feed rolls are capable of moving the fabric forward relative to its length, while the cutter is capable of moving circumferentially relative to fabric lengbth. A long bias cloth of high quality can be manufactured continuously, even when the warp and weft fibers used have high-strength and poor or low elongation.

Claims20

Dependent claims

A method for continuous manufacture of a long bias cloth comprising the steps of:

forming a tubular fabric by weaving warps and a weft on a circular loom, said circular loom having a central axis;
removing said tubular fabric from said circular loom along said central axis of the circular loom and under tension, while maintaining a cross-section of said tubular fabric in a circular on elliptical shape;
moving said tubular fabric in a lengthwise direction thereof along said central axis, while maintaining said cross-section in said circular or elliptical shape;
and
spirally cutting said tubular fabric during movement in said lengthwise direction along said central axis, by means of a cutter which moves in a circumferential direction transverse to said central axis,
wherein said removing of the tubular fabric from said circular loom comprises the steps:
(1) providing a primary pillar core oriented along said central axis, said primary pillar core having a circular or elliptical cross-section and an outer circumferential length slightly shorter than an inner circumferential length of said tubular fabric, said tubular fabric being slipped over said primary pillar core;
and (2) providing a taking-out device having at least one stage and a plurality of caterpillars, said taking-out device being abutted against an outer periphery of said tubular fabric such that said tubular fabric is removed under tension from said circular loom and moved along an outer periphery of said primary pillar core by driving said caterpillars.

5 more elements

Dependencies are inferred from the claim text.