Increased picking frequency of pile wire looms
AssigneeN.V. Michel Van de Wiele
InventorCarlos Derudder
Life of this patent
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Abstract
Method of weaving pile fabrics by means of pile wire looms, wherein the fabric has a pile loop every n wefts, n being greater than or equal to 2, and wherein each of the pile wires is inserted in an insertion cycle which takes place during one weft cycle and are each extracted, one after the other, in an extraction cycle which takes place over n successive weft cycles. Apparatus for applying this method comprises at least two extraction and one insertion carriage. In addition, the apparatus has a transfer device which consists essentially of a fixed pile wire bar and a movable pile wire bar. The two pile wire bars are provided on their mutually facing longitudinal sides with a guide track over which the pile wires make their extraction movement and insertion movement.
Claims16
Method for weaving pile fabrics by means of pile wire looms, wherein the fabric has a pile loop every n wefts, n being greater than or equal to 2, and wherein pile wires are each inserted into a shed in an insertion cycle which occurs during one weft cycle and are each extracted from the shed, one after the other, in an extraction cycle, characterized in that an extraction cycle takes place over n succesive weft cycles and that the insertion cycle of one pile wire takes place during an extraction cycle of another pile wire.
An apparatus for the insertion and extraction of pile wires in the weaving of pile fabrics by means of a pile wire loom, wherein the fabric has a pile loop every n wefts, n being greater than or equal to 2, consisting of:
- means for guiding the insertion into a shed and extraction from the shed of pile wires in the weaving of pile fabrics;
- and
- pile wire carriages which move to-and-fro along the guide means and insert or extract the pile wires, characterized in that the pile wire carriages comprise at least one extraction carriage, wherein the extraction carriage has a means for making a extraction movement over n successive weft cycles, and at least one insertion carriage, wherein the insertion carriage has a means for making an insertion movement over one weft cycle and during the extraction movement of the extraction carriage.
Apparatus for the insertion into a shed and extraction from the shed of pile wires in the weaving of pile fabrics by means of a pile wire loom, consisting of means for guiding the insertion and extraction of pile wires in the weaving of pile fabrics and one or more pile wire carriages which move to-and-fro along the guide means and insert or extract the pile wires, characterized in that the guide means consist of a fixed guide track which is situated at an extraction position, coinciding with a direction of extraction of the pile wires, and a movable guide track having a means for moving the movable guide track between an insertion position with a determined pile wire insertion direction and an extraction position coinciding with the direction of extraction of the pile wires.
An apparatus for the insertion and extraction of pile wires in the weaving of pile fabrics by means of a pile wire loom, consisting of:
- guide means for guiding the insertion into a shed and extraction from the shed of pile wires in the weaving of pile fabrics;
- at least one pile wire carriage which moves to-and-fro along the guide means and which inserts or extracts the pile wires;
- wherein the pile wire carrier is provided with a gripper having a slidable jaw and a rotatable jaw, wherein the slidable jaw is provided with a cam follower, and wherein the rotatable jaw turns about a pin connected to the pile wire carrier and is connected to the slidable jaw by means of a slot and pin transmission in such a manner that the rotatable jaw turns towards the slidable jaw when the latter moves in the direction of the guide means and that the rotatable jaw turns away from the slidable jaw when the latter moves in an opposite direction;
- and
- wherein the gripper is further provided with one or more cams which are disposed along the guide means and are so shaped so that the gripper closes during its movement towards the guide means and in the closed position can grip a pile wire, and which opens during its movement away from the guide means.
Dependencies are inferred from the claim text.