Abstract: A texturing apparatus for draw texturing a synthetic yarn. To this end, the texturing machine comprises a first feed system, a heating device, a cooling device, a texturing unit, a second feed system, and a takeup device for winding the textured yarn. Between the heating device and the cooling device, a wetting device is provided for wetting the heated yarn with a cooling fluid for purposes of precooling. The wetting device consists of a rotatable cooling cylinder which includes on its circumference a yarn track that contains a cooling fluid. The yarn can be wetted by contacting the yarn track. At the point of contact, the yarn friction is advantageously dependent on the relative speed between the yarn and the yarn track on the circumference of the cooling cylinder.

Abstract: A texturing apparatus for draw texturing a synthetic yarn. To this end, the texturing machine comprises a first feed system, a heating device, a cooling device, a texturing unit, a second feed system, and a takeup device for winding the textured yarn. Between the heating device and the cooling device, a wetting device is provided for wetting the heated yarn with a cooling fluid for purposes of precooling. The wetting device consists of a rotatable cooling cylinder which includes on its circumference a yarn track that contains a cooling fluid. The yarn can be wetted by contacting the yarn track. At the point of contact, the yarn friction is advantageously dependent on the relative speed between the yarn and the yarn track on the circumference of the cooling cylinder.

Abstract: A false twist texturing apparatus for false twist texturing a plurality of synthetic yarns in a plurality of processing stations, which each comprise a plurality of feed roll systems, a primary heater, a cooling device, a false twist unit, a secondary heater, and a takeup device. For accommodating the takeup devices, a takeup module is provided, and a processing module is provided for accommodating the false twist units, with a doffing aisle being formed along the takeup module and a servicing aisle along the processing module. To realize a short yarn path, the processing module and the takeup module are joined to form a frame section arranged between the servicing aisle and the doffing aisle. In this arrangement, the yarn passage from the processing module to the takeup module is formed by the secondary heater which is horizontally oriented, so that the yarn is guided between the false twist unit and the takeup device on the frame section along a generally U-shaped path.

Abstract: A texturing machine for producing a crimped yarn and which has a plurality of serially arranged yarn processing units leading to a takeup device. A threading device is provided for threading a yarn for the first time before the start of a process. For this purpose, the threading device comprises at least one guide tube and an air injector connected thereto, with the guide tube including a suction inlet for receiving the yarn. In accordance with the invention, a cutting device is arranged in the region of the suction inlet of the guide tube, with the cutting device cutting the yarn while being threaded into the suction inlet.

Abstract: A texturing machine for producing a crimped yarn and which has a plurality of serially arranged yarn processing units leading to a takeup device. A threading device is provided for threading a yarn for the first time before the start of a process. For this purpose, the threading device comprises at least one guide tube and an air injector connected thereto, with the guide tube including a suction inlet for receiving the yarn. In accordance with the invention, a cutting device is arranged in the region of the suction inlet of the guide tube, with the cutting device cutting the yarn while being threaded into the suction inlet.

Abstract: A false twist texturing apparatus for false twist texturing a plurality of synthetic yarns in a plurality of processing stations, which each comprise a plurality of feed roll systems, a primary heater, a cooling device, a false twist unit, a secondary heater, and a takeup device. For accommodating the takeup devices, a takeup module is provided, and a processing module is provided for accommodating the false twist units, with a doffing aisle being formed along the takeup module and a servicing aisle along the processing module. To realize a short yarn path, the processing module and the takeup module are joined to form a frame section arranged between the servicing aisle and the doffing aisle. In this arrangement, the yarn passage from the processing module to the takeup module is formed by the secondary heater which is horizontally oriented, so that the yarn is guided between the false twist unit and the takeup device on the frame section along a generally U-shaped path.

Abstract: A method and apparatus for controlling a machine for false twist texturing a plurality of synthetic filament yarns and which includes a plurality of side by side processing stations. The plurality of processing stations are divided into a plurality of sections, with each section comprising a plurality of processing stations. The processing stations of each of the sections are monitored and controlled independently of the processing stations of adjacent sections, so that the processing of the yarns in each section is independent of the processing of the yarns in adjacent sections.

Abstract: A method and apparatus for controlling a machine for false twist texturing a plurality of synthetic filament yarns and which includes a plurality of side by side processing stations. The plurality of processing stations are divided into a plurality of sections, with each section comprising a plurality of processing stations. The processing stations of each of the sections are monitored and controlled independently of the processing stations of adjacent sections, so that the processing of the yarns in each section is independent of the processing of the yarns in adjacent sections.

Abstract: An apparatus and a method for guiding and cutting a continuously advancing yarn during a package doff in a takeup device. In this connection, a movable yarn guide guides the yarn substantially parallel to a package or a winding tube, which is driven by a drive roll. The yarn guide is followed by a suction device, which consists of a pneumatic suction inlet end and a cutting device. The suction device cooperates with a transfer device for purposes of cutting the yarn during the package doff and receiving the loose end of the advancing yarn. To protect the yarn during the package doff, the yarn guide extends in the yarn path upstream of the driven tube, and the suction device downstream thereof.

Abstract: A method for winding a continuously advancing yarn to a cross-wound package on a rotating tube wherein the yarn is deposited on the tube during the winding of the package within a winding range. Directly before the winding cycle, a yarn reserve wind forming a trailing yarn end of the package is deposited outside of the winding range. In this process, the yarn is guided by a yarn guide that is movable substantially parallel to the tube surface. In accordance with the invention, the yarn guide is reciprocated at different guiding speeds for purposes of securing the trailing yarn end on the circumference of the tube with at least some yarn winds of the yarn reserve wind.

Abstract: A magnetic bearing is disclosed for an open-end spinning rotor having a shaft supported in a wedge-like gap formed between at least one pair of support rollers. The bearing comprises a housing for receiving the shaft, a magnet disposed in the housing to extend radially relative to the shaft, and a magnet disposed on and radially extending from the shaft axially adjacent and at a spacing from the magnet in the bearing housing. The magnets have respective poles of the same magnetic orientation disposed to face and thereby repel one another. According to the invention, a coupling connects the shaft and the magnet disposed on the shaft, the coupling being releasable in response to an axial force exerted on the shaft.