W. Schlafhorst Ag & Company

Stefan Terorde

Torsten Forche

Manfred Mund

Michael Iding

Bernd-Rudiger Theele

Ferdinand-Josef Hermanns

Helmut Kohlen

Uwe Fabelje

Andreas Kruger

Heinz-Peter Lindemann

Michael Heines

Heinrich Weingarten

John-Adrian Holt

Michael Haines

A method for performing a batch change in an automatic cheese winder, which has many identical winding stations disposed in sections and a transportation system for supplying yarn-wound spinning cops to and removing empty unwound spinning cops from the winding stations. Transport trays for transporting spinning cops or empty tubes revolve within the transportation system, which has many different transport paths, among others transverse transport paths leading to the winding stations. The clearing away of an old batch of yarn is done section by section. Thus, from the transverse transport paths of one winding station section, spinning cop-carrying transport trays are discharged until such time as that section has been cleared out. The temporary storage of empty transport trays in the transverse transport paths of a cleared winding station section is already begun while adjacent winding station sections are still being cleared. When the automatic cheese winders are being filled with spinning cops from a new batch of yarn, at the same time one empty transport tray per transverse transport path is discharged out of the transverse transport paths, and the free spaces thus created on the transverse transport paths are filled uniformly via the storage path with transport trays that carry spinning cops with the new batch of yarn.

Method for operating an automatic cheese winder when changing batches

A method for operating an automatic cheese winder, having multiple winding stations (A, B, etc.) and a transportation system (,) for supplying the winding stations with spinning cops (,) and discharging them of empty tubes (,). The spinning cops are furnished by a preceding textile machine (,) having a spinning cop and empty tube transport device (,) communicating with the transportation system (,). The delivery of spinning cops to the winder (,) is continuously monitored by a sensor. A control device (,) of a tube monitor (,) assures that empty tube-equipped transport trays are kept on hand in the transportation system, and the tube monitor via the central control unit (,) initiates a controlled slow-down of the winder (,) into an energy-saving mode. Upon resumption of delivery of the spinning cops, the winder is accelerated from the energy-saving mode to an operating mode.

Automatic cheese winder and method for operating an automatic cheese winder

A suction arrangement for a device for repositioning the reserve winding typically found on cops from a ring spinning machine to prepare the cops for rewinding into larger yarn packages at a bobbin-winding machine. The suction device is connected to a central supply of suction air to aspirate and hold the yarn end until it is re-deposited on the cop, and includes an air flow restrictor plate movable among multiple positions for selectively obstructing the suction air flow to apply respectively different suction forces to the yarn end based on predetermined parameters of the yarn, the cop preparation operation, or the particular winding operation.

Cop preparation device for a bobbin-winding machine

A friction roller of a winding station of a winding machine is driven at a base angular velocity and is alternately accelerated and braked when the winding ratio is otherwise within a predetermined range of a selected whole number for causing slippage between the friction roller and a yarn package whereby the winding ratio is changed between values above and below the preselected range of the whole number. An evaluation device that calculates acceleration and braking values and a motor responsive to the evaluation device for driving the friction roller control the accelerating and decelerating of the friction roller when the winding ratio would otherwise be within the predetermined range of the selected whole number. Pattern windings of the yarn package are thus avoided.

Method and device for preparing randomly cross-wound yarn packages

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Hamminkeln/Dingden, Germany

Stefan Terorde