The present invention relates to a thread guide element for a yarn monitoring and/or yarn processing unit as well as to a yarn clearer for a workstation of a textile machine with at least one thread guide element.

The present invention relates to a thread guide element for a yarn monitoring and/or yarn processing unit as well as to a yarn clearer for a workstation of a textile machine with at least one thread guide element.

A method for operating a work station of a textile machine that produces or rewinds yarn in a normal operation, wherein the normal operation is interrupted. The method includes performing at least one service step for restoring the normal operation, wherein a service result is specified for the service step. A standard service operation is carried out with a service device until the service result has been achieved or a predetermined number of failed attempts has been reached. When the predetermined number of failed standard service operation attempts has been reached, an extended service operation is carried out.

A method for operating a work station of a textile machine that produces or rewinds yarn in a normal operation, wherein the normal operation is interrupted. The method includes performing at least one service step for restoring the normal operation, wherein a service result is specified for the service step. A standard service operation is carried out with a service device until the service result has been achieved or a predetermined number of failed attempts has been reached. When the predetermined number of failed standard service operation attempts has been reached, an extended service operation is carried out.

A characterization method for characterizing an article made of composite material having woven, braided, or sewn fiber reinforcement, the method including a determination step of using X-ray tomography to determine gray levels of at least a portion of the article, followed by an exploitation step of exploiting the gray levels to obtain information concerning the weaving by distinguishing between at least the free matrix and the threads of fibers mixed with the matrix, the threads being considered as being a material that is homogeneous.

A characterization method for characterizing an article made of composite material having woven, braided, or sewn fiber reinforcement, the method including a determination step of using X-ray tomography to determine gray levels of at least a portion of the article, followed by an exploitation step of exploiting the gray levels to obtain information concerning the weaving by distinguishing between at least the free matrix and the threads of fibers mixed with the matrix, the threads being considered as being a material that is homogeneous.

The present invention relates to a method for handling a yarn end (10) of a cross-wound bobbin (2) at a winding station (1) of a textile machine producing a cross-wound bobbin, whereas the cross-wound bobbin can be held and driven in a bobbin holder (3), a thread (6) is laid in a cross-wise manner on the cross-wound bobbin by means of a traverse device (5) and a suction nozzle (7; 12) is subjected to negative pressure and the thread end is sucked into the suction nozzle through a suction mouth (8; 13). In accordance with the invention, it is proposed that the suction mouth is moved relative to the suction nozzle, such that the distance between the suction mouth and the cross-wound bobbin is changed, in order to be able to find the thread end and/or to be stretched between the suction mouth and the cross-wound bobbin and that the stretched thread is moved to a unit (9) of the textile machine for further processing. Furthermore, the invention relates to a winding station of a textile machine producing cross-wound bobbins (2) with a bobbin holder (3), a traversing device (5) and a suction nozzle (7; 12) that can be subjected to negative pressure with a suction mouth (8; 13) arranged in a movable manner on the suction nozzle, in order to be able to find the thread end (10) and/or to stretch it between the suction mouth and the cross-wound bobbin, and with a thread handling element (8; 13; 16; 18), in order to be able to move the stretched thread (6) to a unit (9) of the textile machine for further processing.

The present invention relates to a method for handling a yarn end (10) of a cross-wound bobbin (2) at a winding station (1) of a textile machine producing a cross-wound bobbin, whereas the cross-wound bobbin can be held and driven in a bobbin holder (3), a thread (6) is laid in a cross-wise manner on the cross-wound bobbin by means of a traverse device (5) and a suction nozzle (7; 12) is subjected to negative pressure and the thread end is sucked into the suction nozzle through a suction mouth (8; 13). In accordance with the invention, it is proposed that the suction mouth is moved relative to the suction nozzle, such that the distance between the suction mouth and the cross-wound bobbin is changed, in order to be able to find the thread end and/or to be stretched between the suction mouth and the cross-wound bobbin and that the stretched thread is moved to a unit (9) of the textile machine for further processing. Furthermore, the invention relates to a winding station of a textile machine producing cross-wound bobbins (2) with a bobbin holder (3), a traversing device (5) and a suction nozzle (7; 12) that can be subjected to negative pressure with a suction mouth (8; 13) arranged in a movable manner on the suction nozzle, in order to be able to find the thread end (10) and/or to stretch it between the suction mouth and the cross-wound bobbin, and with a thread handling element (8; 13; 16; 18), in order to be able to move the stretched thread (6) to a unit (9) of the textile machine for further processing.

The present invention relates to a spinning position of an air-spinning machine having a spinning device, and to a spinning device for manufacturing a thread from a supplied fibre band by means of a circulating air flow, with a hollow spinning cone arranged in a spinning housing, the spinning housing having an envelope wall arranged coaxially and at a distance from the spinning cone and forming an envelope gap, and a nozzle device to which compressed air can be applied for producing an air flow circulating the spinning cone in the envelope gap. Furthermore, the present invention relates to a method for monitoring the spinning process on a spinning device. In order to provide a spinning position of an air-spinning machine with a spinning device which detects process disturbances reducing the thread quality as early as during the spinning process, and in order to provide a method for monitoring the spinning process on the spinning device, there is provision in the spinning device for the spinning cone and the envelope wall for forming a capacitor unit to have electrodes arranged opposite one another with the envelope gap interposed and forming an electrode pair.

The present invention relates to a spinning position of an air-spinning machine having a spinning device, and to a spinning device for manufacturing a thread from a supplied fibre band by means of a circulating air flow, with a hollow spinning cone arranged in a spinning housing, the spinning housing having an envelope wall arranged coaxially and at a distance from the spinning cone and forming an envelope gap, and a nozzle device to which compressed air can be applied for producing an air flow circulating the spinning cone in the envelope gap. Furthermore, the present invention relates to a method for monitoring the spinning process on a spinning device. In order to provide a spinning position of an air-spinning machine with a spinning device which detects process disturbances reducing the thread quality as early as during the spinning process, and in order to provide a method for monitoring the spinning process on the spinning device, there is provision in the spinning device for the spinning cone and the envelope wall for forming a capacitor unit to have electrodes arranged opposite one another with the envelope gap interposed and forming an electrode pair.