Sulzer Rueti Ag

Sultex Ag

Other

Sulzer Management Ag

Joweid Zentrum

Urs Schaich

Marcel Christe

Dietmar Markward

Rolf Benz

Marius Bachofen

Erich Gasser

Werner Degen

Goran Dokic

A jet weaving machine is proposed in which a weft thread (S) can be inserted by means of a fluid from a weft insertion side () to a receiving side (), including a weaving sley (), along which a weft insertion path () extends, which determines a weft insertion direction (A), and including a monitoring apparatus () which is arranged at the receiving side () and which comprises two sensor devices () for detecting the weft thread (S) or parts of the weft thread respectively, with exactly one of the sensor devices () being firmly mounted on the weaving sley ().

Jet weaving machine

A catching and holding apparatus for catching-side weft thread ends in a weaving machine comprises a main nozzle and a catching passage for holding and stretching a weft thread end and a carrier on which the main nozzle and the catching passage are arranged. Furthermore, the catching and holding apparatus also comprises an auxiliary nozzle and one or more guides, which are arranged on the carrier in such a manner that a weft thread end which is located in the active region of the auxiliary nozzle is brought by an air jet of the auxiliary nozzle along the guides into the active region of the main nozzle.

Catching and holding apparatus for the catching-side weft thread end in a weaving machine

An arrangement for the holding of a weft thread for a series shed weaving machine has a holder apparatus (,) for the weft thread (,). Two forwarding elements (,) are arranged at both sides of the holder apparatus and are movable relative to the holder apparatus in order to introduce the weft thread. The weft thread (,) extends transversely to the holder apparatus and transversely to the holder apparatus and transversely to the direction of movement of the forwarding elements, into the holder apparatus and furthermore, an apparatus (,) in order to catch and to tension the weft thread. The holder apparatus comprises a thread clamp (,) with a stationary clamping part (,) and a movable clamping part (,) which is under spring action and which forms a clamping gap (,). The weft thread is held in a stretch state by the forwarding elements (,) and the apparatus (,) and is displaceable transversely through the clamping gap. The required clamping force can be set in an advantageous manner through the thread clamp.

Holder apparatus for weft thread in a series shed weaving machine

Lengths of weft thread are sequentially inserted in sheds formed by a series shed weaving machine. Weft thread is continuously supplied with a fluid flow. By reversing the flow direction of the fluid flow or deflecting the weft thread, a thread loop is formed outside a weft distribution apparatus of the weaving machine so that the weft thread remains taut inside the weft thread distribution apparatus. A nozzle arrangement in which the fluid flow direction is reversible or a weft thread clamping and deflecting arrangement are used to form the loop and maintain the weft thread taut.

Method and distribution apparatus for pneumatic weft insertion in a

Removal of a weft thread in a series shed weaving machine

An apparatus and method for correcting an irregularity during the insertion of a weft yarn into a weaving rotor of a series shed weaving machine involves drawing a length of weft yarn from a supply unit and delivering the weft yarn to the weaving machine in synchronicity with the weaving cycle. The length of weft yarn is inserted into a weft yarn conveyor apparatus and wound around a conveyor roller. A sensor is positioned between the supply unit and the conveyor apparatus to detect a weft yarn interruption, e.g., as a result of a weft yarn breakage or the yarn running out of spool. When the interruption is detected, the conveyor roller continues to deliver weft yarn stored in the storage apparatus until a complete weft yarn insertion into the weaving machine has taken place (i.e., weft yarn having a single loom width). The weft yarn is then cut at the insertion side of the weaving machine and the weaving machine is stopped. The weft yarn remaining in the weft preparation unit is then pulled back by the conveyor roller and discharged into a waste container.

Apparatus and method for correcting irregularities in a series shed

A cutter for use with looms has a positionally stable, rotating first cutting member (1) and a rotating second cutting member (2) which is moveable in relation to the first cutting member. The cutting members are connected in a frictional manner by an energy storing device (8) and rotate in opposite directions. The movable second cutting member (2) is mounted so that it can freely rotate on an axle (6), which is retained in a torsionally secure manner in membrane springs (11), which are elastically deformable in the axial direction in order to compensate for the lateral deflections of the rotating, positionally stable first cutting member (1), as a result of which the service life of the cutters is extended. The device is particularly suitable for a series shed loom because a high cutting rhythm can be achieved.

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Eschenbach, Switzerland

Urs Schaich