Selvedge forming apparatus, weaving machine with a selvedge forming apparatus and method for forming a selvedge
AssigneePicanol N.V.
InventorsMarnix Ghesquiere, Jean Marie Bamelis
Life of this patent
Estimating the term…
Abstract
Weaving machine, method and selvedge forming apparatus for introducing into a shed an end (30A) of a weft thread (30) which has been inserted into a shed, the selvedge forming apparatus (4, 5, 6) being provided with a device (20) for introducing the end of the inserted weft thread into a subsequent shed, wherein the selvedge forming apparatus (4, 5, 6) includes a blowing device (50) having at least one blowing opening (51) which, in use, is positioned at the level of the plane of a selvedge (16, 17) of the woven fabric (2, 3), with the blowing device (50), blowing essentially toward the beat-up line (36) in a direction opposite to the direction of fabric movement.
Claims24
Selvedge forming apparatus for a weaving machine having a beat-up reed movable to and fro to advance each inserted weft thread up to a beat-up line and a selvedge forming device locatable adjacent a selvedge of a fabric being woven on such a weaving machine configured to introduce an end of each weft thread that has been inserted during weaving via a shed into a subsequently formed shed of such weaving machine for being beat-up with the subsequently inserted weft thread, said selvedge forming apparatus comprising:
- a blowing device having at least one blowing opening adapted to be located close to and downstream of the beat-up line of such weaving machine relative to fabric movement close to a plane of the selvedge with an orientation enabling blowing of an air stream onto the end of the weft thread that has been introduced into the subsequently formed shed but before being beat-up, said orientation resulting in blowing of air in a direction back towards the shed and the reed and opposite to the direction of movement of the fabric being woven, so that the end of the weft thread that has been introduced into the subsequently formed shed is blown towards the subsequently inserted weft thread before beat-up in a direction opposite to the direction of fabric movement.
Weaving machine comprising a beat-up reed movable to and fro to advance each inserted weft thread up to a beat-up line and a selvedge forming device located adjacent a selvedge of a fabric being woven on the weaving machine configured to introduce an end of each weft thread that has been inserted during weaving via a shed into a subsequently formed shed of the weaving machine for being beat-up with the subsequently inserted weft thread;
- said selvedge forming apparatus comprising a blowing device having at least one blowing opening located close to and downstream of the beat-up line relative to fabric movement close to a plane of the selvedge with an orientation enabling blowing of an air stream onto the end of the weft thread that has been introduced into the subsequently formed shed but before being beat-up, said orientation resulting in blowing of air in a direction back towards the shed and the reed and opposite to the direction of movement of the fabric being woven, so that the end of the weft thread that has been introduced into the subsequently formed shed is blown towards the subsequently inserted weft thread before beat-up in a direction opposite to the direction of fabric movement.
Method for forming a selvedge on a fabric during weaving on a weaving machine, comprising the steps of:
- inserting a weft thread into a shed formed of warp threads and beating-up the inserted weft thread by a device moving to a beat-up line;
- introducing an end of the inserted weft thread into a subsequently formed shed;
- inserting a next weft thread into the subsequently formed shed, and beating-up said next weft thread together with the end of the previously inserted weft thread at the beat-up line;
- wherein, before beating up the end of the weft thread that has been introduced into the subsequently formed shed, an air-stream is blown onto said end of the weft thread before beat-up, said air-stream being essentially directed towards the beat-up line against the moving direction of the fabric being woven so as to urge the weft thread that has been introduced into the subsequently formed shed towards the next weft thread.
Dependencies are inferred from the claim text.