Abstract: A method and an apparatus for winding a yarn package, wherein an advancing yarn is reciprocated by means of a traversing yarn guide within a traverse stroke, and deposited on the yarn package. To avoid high package edges, the traverse stroke of the traversing yarn guide is variable in its length within the width of the yarn package during the winding operation. The length variations of the traverse stroke occur during the winding cycle by a predetermined stroke modification function, which is determined from a mass distribution of the yarn on a hypothetically wound, ideal yarn package, so that it is possible to produce a predetermined package density of the yarn package.

Abstract: Yarn is dispensed by a yarn guide mobile in translation parallel to generatrices of a rotary holder. The device comprises a carriage receiving the yarn guide and having fittings for being coupled with a flexible transmission and driving member adapted to impart to the yarn guide a reciprocating movement, in combination with a translational guide, parallel to the generatrices of the rotary holder. The yarn guide, the translational guide and the fittings being offset at an angle on the carriage to generate an additional speed component proximate to changeover points.

Abstract: A winding machine for winding a strand onto a tubular support to form a strand package, and including a spindle on the which the tubular support is mounted for rotation therewith. A motor is provided for rotating the spindle. A reciprocating traverse mechanism, including a strand guide, guides the strand onto the tubular support at a predetermined traverse stroke and wind ratio. The traverse mechanism includes servo-motor for selectively starting and stopping reciprocating movement of the strand guide in accordance with the predetermined traverse stroke and wind ratio, and a programmable servo-controller accepts data inputs reflecting the desired traverse stroke and wind ratio and outputting data to the servo-motor reflecting the desired traverse stroke and wind ratio.

Abstract: A winding machine for winding a strand onto a tubular support to form a strand package, and including a spindle on the which the tubular support is mounted for rotation therewith. A motor is provided for rotating the spindle. A reciprocating traverse mechanism, including a strand guide, guides the strand onto the tubular support at a predetermined traverse stroke and wind ratio. The traverse mechanism includes servo-motor for selectively starting and stopping reciprocating movement of the strand guide in accordance with the predetermined traverse stroke and wind ratio, and a programmable servo-controller accepts data inputs reflecting the desired traverse stroke and wind ratio and outputting data to the servo-motor reflecting the desired traverse stroke and wind ratio.

Abstract: A method and apparatus for winding a continuously advancing yarn, wherein the yarn is wound on a driven tube to a cross wound package. The yarn is reciprocated by means of a traversing yarn guide within a traverse stroke which is variable in its length within the package width of the cross wound package. During the winding cycle, the traverse stroke is varied between a maximum length at the beginning of the winding cycle and an end length at the end of the winding cycle by a predetermined stroke function in such a manner that in the course of the winding cycle, a certain length is associated to each traverse stroke, with the lengths of the traverse strokes being smaller than the respective wound package widths then being formed.

Abstract: A method and an apparatus for traversing a yarn, wherein a traversing yarn guide is moved by means of an electric motor. The actual position of the yarn guide is continuously determined by means of a measuring device and supplied to a control device, which performs a comparison between the actual and desired positions of the traversing yarn guide, and the control device generates a corresponding differential signal for controlling the operation of the electric motor.

Abstract: A method and apparatus for winding a continuously advancing yarn, wherein the yarn is wound on a driven tube to a cross wound package. The yarn is reciprocated by means of a traversing yarn guide within a traverse stroke which is variable in its length within the package width of the cross wound package. During the winding cycle, the traverse stroke is varied between a maximum length at the beginning of the winding cycle and an end length at the end of the winding cycle by a predetermined stroke function in such a manner that in the course of the winding cycle, a certain length is associated to each traverse stroke, with the lengths of the traverse strokes being smaller than the respective wound package widths then being formed.

Abstract: An apparatus and method for guiding and cutting a continuously advancing yarn (1) during a package doff in a takeup device. The yarn is guided by means of a yarn guide (18) which is movable substantially parallel to a package or to a new tube (13), which is driven by a drive roll (29). Downstream of the yarn guide (18), a deflection device (2) and a suction device (37) are arranged, with the suction device comprising a pneumatic vacuum connection (46) and a cutter (47). The suction device (37) cooperates with a transfer device (42) for purposes of cutting the yarn during a package doff and receiving the loose end of the advancing yarn. To enable a gentle processing of the yarn during the package doff, the yarn guide (18) is arranged in the path of the advancing yarn upstream of the driven tube (13), and a deflection device (2) as well as the suction device (37) are arranged downstream of the driven tube.

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 and apparatus for winding a continuously advancing yarn to a package formed on a tubular core, wherein a traversing yarn guide reciprocates the yarn within a traverse stroke and deposits it on the package at an angle of crossing. For its reversal at the ends of the traverse stroke, the traversing yarn guide is decelerated within each reversal range by a finite deceleration from a guiding speed and is again accelerated to the guiding speed by a finite acceleration. The acceleration and deceleration of the traversing yarn guide are controlled in such a manner that the reversal ranges of the traverse strokes become greater in length as the diameter of the package increases.

Abstract: In a method for winding a yarn onto a spool body, the conical spool body is driven about a longitudinal axis by a first drive unit. A yarn is guided onto the spool body by a reciprocating yarn guide thereby winding the yarn onto the spool body. A constant yarn winding speed is provided along the length of the spool body during the entire yarn winding process by adjusting the revolutions per minute of the spool body synchronously with a movement of the reciprocating yarn guide. The revolutions per minute are controlled by a computing and control unit based on the instant position of the reciprocating yarn guide and the diameter of the spool body at the instant position. The device for performing this method has a sensor for detecting the changing diameter of the spool body, and the reciprocating yarn guide has a detection device for detecting the instant position of the reciprocating yarn guide.

Abstract: A method and apparatus for winding a continuously advancing yarn, wherein the yarn is wound into a package that is formed on a rotating tubular core, the yarn being traversed by a yarn guide within a traverse stroke. At the beginning of each traverse stroke, the yarn guide is accelerated within a reversal length to a guiding speed, and after traversing the traverse length it is decelerated within a second reversal length. The yarn traversing mechanism includes a belt drive system for reciprocating the yarn guide and which is controlled by a programmable control device such that the yarn guide is moved within a traverse stroke which is axially shorter than the package length and which is reciprocated between the ends of the package without changing the length of the traverse stroke.