Abstract: Extruder feed system. The system includes a pair of spaced-apart, internally and oppositely threaded rotatable elements for receiving and engaging a plastic filament material. An electric motor rotates the rotatable elements in opposite directions thereby to drive the filament into a liquefier chamber for subsequent discharge through a nozzle. The system provides very accurate layer-by-layer build up.

Abstract: Extruder feed system. The system includes a pair of spaced-apart, internally and oppositely threaded rotatable elements for receiving and engaging a plastic filament material. An electric motor rotates the rotatable elements in opposite directions thereby to drive the filament into a liquefier chamber for subsequent discharge through a nozzle. The system provides very accurate layer-by-layer build up.

Abstract: A lashing assembly lashes together two or more fiber optic telecommunications cables. The lashing assembly comprises at least a first and a second bobbin. As the cables are passed through the first bobbin, twine pays off from the first bobbin and wraps around the cables in a clockwise helix. As the cables are passed through the second bobbin, twine pays off from the second bobbin and wraps around the cables in a counterclockwise helix. In this way, the twine from the first and second bobbins lash the cables together as the cables are passed through the first and second bobbins.

Abstract: Wind-on device for workstations of two-for-one twisters and ply twisters with a take-up bobbin, a drive shaft extending in the longitudinal direction of the machine, a friction roller which is driven by the drive shaft and causes the take-up bobbin to make a rotational movement, and a driven advance roller positioned upstream of the friction roller in the yarn run. According to the invention, in addition to the friction roller (14, 15), the advance roller (8, 9) is also driven by the drive shaft (27, 28) and in that the advance roller (8, 9) is mounted on a support element (23, 24) and can be pivoted together with the support element (23, 24) about a pivot axle selectively into an operating position or into a higher situated service position.

Abstract: The invention relates to a method for winding pre-oriented, non-crystalline polyester filaments onto a spool at a winding speed of at least 4,200 m/min, in which the wound filament is wound over the width of the spool by means of a flying traverse arm and is turned by a driven sensing roller with an applied pressure between 8 and 18 kg on the circumference of a spool placed on a driven spool-locating pin. The filaments for winding are introduced to the traverse thread guide at a thread tension of between 0.03 cN/dtex and 0.20 cN/dtex. The sensing roller is driven at an overspeed of preferably between 0.3 and 1.2%, in comparison with the spool circumferential speed. The thread laying angle is set between 3.5° and 7.5° by means of the spool travel. The above method permits a good spool formation even at high spooling speeds.

Abstract: A motor, characterized in that a balance-correcting portion is provided within a range of ±L/3 in the axial direction from the center of the overall length in the axial direction of the rotor of the motor, where L denotes the overall length; a yarn winder provided with the motor; and a yarn package production method using the yarn winder. A long spindle capable of rotating at a high speed is used to allow yarns to be wound at a high speed in a large amount, thereby improving the productivity of yarn packages.

Abstract: A yarn winding machine for winding at least one yarn and a method of controlling such a winding machine. In the winding machine, a plurality of rotatably driven components are used, whose drives are controlled via a controller. A data module is associated to at least one of the components, with the data module being writable and/or readable by the controller.

Abstract: In reversible head winders two bobbin holders (3a, 3b) are alternately used. Each bobbin holder is coupled to a frequency-controllable drive (9a, 9b) associated to a frequency converter (14a, 14b). A sensing roller (6) which in operation is in contact with the surface of the bobbin (5) being formed is also equipped with a drive (10). According to the invention, each frequency converter (14a, 14b) can be switched from the drive (9a, 9b) of the associated bobbin holder (3a, 3b) to the drive (10) of the sensing roller (6). The drive of the sensing roller (6) is electrically connected to the frequency converter (14b) of the bobbin holder (3b) which is momentarily in the ready position. In this manner one can spare a frequency converter for the drive (10) of the sensing roller (6).

Abstract: In a winding apparatus for endless threads, a revolving disc (6) has at least two clamping chucks (8, 10) rotatably supported on the periphery thereof. A friction roll (2), the shaft (4) of which as well as the shaft (12) of the revolving disc (6) are mounted in a frame (14) at fixed locations. The shaft (12) is connected to a first drive device (120) and the first shaft (4) is connected to a second drive device (40). Each clamping chuck (8, 10) is provided with its own third drive device (80), and fourth drive device (100) respectively.

Abstract: In a winding apparatus for endless threads with a revolving disc (6) in the periphery of which at least two clamping chucks (8, 10) are rotatably supported and with a friction roll (2) the shaft of which as well as the shaft (12) of the revolving disc (6) are mounted at fixed locations in a frame, a shaft each (4, 12) is connected to a first drive device (120), and with a second drive device (40) respectively. Each clamping chuck is provided with its own third drive device (80), and a fourth drive device (100) respectively. The contacting pressure between the friction roll (2) and a respective clamping chuck each can be adjusted as a function of the diameter of a thread package being built on a clamping chuck.

Abstract: A winding control device for a take-up winder that can reliably and precisely eliminate the slips of a contact roller rotated in contact with a bobbin holder used in a spindle-driven winding machine for synthetic yarn is described. The winding control device includes an induction motor IM3 which supplements the driving of the contact roller CR which rotates in contact with a package P. A counter force detector 7, 8 or 13 which detects the counter force created by the rotation of the contact roller against the bobbin holder, and a control part eliminates slips by adjusting the relative rotation speeds of the bobbin holder BH1 and the contact roller CR based on the output of the counter force detecting means 7, 8 or 13.