A yarn accumulator unit for a workstation with a yarn guide arm pivotally mounted about a pivot axis, and a controllable drive unit for reversing pivoting of the yarn guide arm. The yarn guide arm is to be freely rotatably mounted and to have a magnetically acting first coupling element arranged at a distance from the pivot axis, and for the drive unit to have a second magnetic coupling element arranged so as to be adjustable transversely to the first coupling element or about the pivot axis, magnetically repulsively acting on the first coupling element, which second magnetic coupling element is arranged so that it can be brought into active connection with the first coupling element on the drive unit, in which case an adjustment of the second coupling element in the direction of the first coupling element causes a displacement of the first coupling element in the same direction.

A yarn accumulator unit for a workstation with a yarn guide arm pivotally mounted about a pivot axis, and a controllable drive unit for reversing pivoting of the yarn guide arm. The yarn guide arm is to be freely rotatably mounted and to have a magnetically acting first coupling element arranged at a distance from the pivot axis, and for the drive unit to have a second magnetic coupling element arranged so as to be adjustable transversely to the first coupling element or about the pivot axis, magnetically repulsively acting on the first coupling element, which second magnetic coupling element is arranged so that it can be brought into active connection with the first coupling element on the drive unit, in which case an adjustment of the second coupling element in the direction of the first coupling element causes a displacement of the first coupling element in the same direction.

Embodiments of a method of collecting a tail section of a long product, such as an optical fiber cable, are provided. In the method, a lead wire from a tail spool is unwound, and the lead wire is fed through a flange of a main spool. The tail spool and the main spool have a common rotation axis. The lead wire is attached to the long product. The tail spool is rotated while holding the main spool stationary so as to wind the lead wire and the tail section onto the tail spool. The rotation of the tail spool is stopped, and the main spool and the tail spool are rotated together so as to wind the long product onto the main spool. Also provided are embodiments of a winding apparatus using the tail spool and a tail reel that includes the tail spool and a drive mechanism.

A device and a method wind a thread on a winding machine. The winding machine has a spool sleeve and a spool holder, which has two oppositely disposed centering plates, having an adjustable axial distance relative to each other, for tensioning the spool sleeve. The centering plates each have a centering cone which engages in an open spool sleeve end, and an arrester hook for arresting the thread being provided in one of the centering plates. The arrester hook is oriented in the circumferential direction of the centering plate, and the centering plate having the arrester hook contains an outer cone which overlaps the outer diameter of the spool sleeve end. An inside of the arrester hook is formed by a nose-like recess provided in the outer cone.

Embodiments of a method of collecting a tail section of a long product, such as an optical fiber cable, are provided. In the method, a lead wire from a tail spool is unwound, and the lead wire is fed through a flange of a main spool. The tail spool and the main spool have a common rotation axis. The lead wire is attached to the long product. The tail spool is rotated while holding the main spool stationary so as to wind the lead wire and the tail section onto the tail spool. The rotation of the tail spool is stopped, and the main spool and the tail spool are rotated together so as to wind the long product onto the main spool. Also provided are embodiments of a winding apparatus using the tail spool and a tail reel that includes the tail spool and a drive mechanism.

Embodiments of a method of collecting a tail section of a long product, such as an optical fiber cable, are provided. In the method, a lead wire from a tail spool is unwound, and the lead wire is fed through a flange of a main spool. The tail spool and the main spool have a common rotation axis. The lead wire is attached to the long product. The tail spool is rotated while holding the main spool stationary so as to wind the lead wire and the tail section onto the tail spool. The rotation of the tail spool is stopped, and the main spool and the tail spool are rotated together so as to wind the long product onto the main spool. Also provided are embodiments of a winding apparatus using the tail spool and a tail reel that includes the tail spool and a drive mechanism.

The invention relates to a device (2) for winding an excess length (100) of an optical fibre onto a bobbin (1) comprising: a cylindrical reel (10), two rims (11, 12) extending radially from each end of the reel (10), one (11) of said rims being provided with a port (110) for the optical fibre, a magazine (13) which has a cylindrical surface for receiving a winding of the excess length (100) of the optical fibre, is separated from the reel (10) by the rim (11) provided with the port (110) and has a circumferential edge (130) for retaining the excess length of the optical fibre, the device is characterised in that the same comprises: means (22) for storing the excess length of the optical fibre, and means (21) for winding the excess length of the optical fibre about the magazine (13), the means (21, 22) being able to cooperate in such a way as to unwind a certain length of the optical fibre stored on the storing means (22) and wind the excess length about the magazine (13).

A method for depositing a yarn end on a bobbin wound on a tube in a defined manner during winding of yarn on the bobbin at a workstation of a spinning and winding machine includes terminating spinning production of the yarn at the workstation to create a yarn end. The yarn end is then prepared with working devices at the workstation, including rotating the bobbin in a direction opposite to a winding direction during production of the yarn. A yarn reserve is formed, and the yarn end is then deposited in a defined manner on the tube outside of the profile of a standard yarn package.

A method for depositing a yarn end of a yarn on a bobbin wound on a tube in a defined manner during winding of yarn on the bobbin at a workstation of a spinning and winding machine includes detecting the yarn end on the bobbin via an attending device. After detecting the yarn end, the yarn end is passed to devices at the workstation, and with the devices at the workstation, the yarn end is directed in a defined manner outside of a profile of a standard yarn package wound on the bobbin prior to the yarn end being deposited onto the tube outside of the yarn package profile.

A core for winding yarn can include an oblong hollow body and a laser-cut structure disposed through a portion of a wall of the hollow body adjacent to an end of the hollow body. A method of cutting a core for winding yarn can include providing a core comprising an oblong hollow body, and irradiating a wall of the hollow body with a laser beam to form a laser-cut structure. A method of winding yarn can include placing a core on a winding mandrel, placing a tail of a length of yarn through a laser-cut structure of the core, and spinning the core to wind the length of yarn around the core. A bobbin can include yarn wound around a core including a laser-cut structure.