Method and apparatus for the insertion of a weft thread
AssigneeSultex AG
InventorsRemo D' Incau, Marius Bachofen, Davide Maccabruni
Life of this patent
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Abstract
A method for the insertion of a weft thread into a shed of a rapier weaving machine is presented in which the weft thread (3) is taken up by a bringer rapier (10) and fixedly clamped in the same by means of a thread clamp; is inserted into the shed by means of the bringer rapier and is taken up by a taker rapier. In the said method the clamping force of the thread clamp in the bringer rapier is additionally controlled during the weft insertion in such a way that the clamping force (F0) during the take-up of the weft thread and/or during the transfer of the weft thread is reduced relative to the clamping force (F1) in the insertion phase lying therebetween.
Claims15
A method for the insertion of a weft thread into a shed of a rapier weaving machine in which the weft thread (3)
- is taken up by a bringer rapier (10) and fixedly clamped in the same by means of a thread clamp;
- is inserted by means of the bringer rapier into the shed;
- is taken over by a taker rapier and fixedly clamped in the same by means of a thread clamp;
- and
- the insertion of the weft thread is continued by means of the taker rapier, characterized in that
- the clamping force (F) of the thread clamp in the bringer rapier (10) is controlled during the weft insertion in that
- the clamping force of the thread clamp is reduced by means of at least one magnet (7, 8) during the take-up of the weft thread and/or during the transfer of the weft thread relative to the clamping force (F1) in the insertion phase lying therebetween, in particular to a predetermined value (F0).
An apparatus for the insertion of a weft thread (3) into a shed of a rapier weaving machine, said apparatus (1) including a thread clamp for a bringer rapier, characterized in that the apparatus additionally includes at least one magnet (7, 8) in order to reduce the clamping force of the thread clamp during the take-up of the weft thread and/or during the transfer of the weft thread to a taker rapier relative to the clamping force in the insertion phase lying therebetween, in particular to a predetermined value (F0).
Dependencies are inferred from the claim text.