Cop preparation device for a bobbin-winding machine
AssigneeW. Schlafhorst AG & Co.
InventorsUwe Fabelje, Helmut Kohlen, Stefan Terorde
Life of this patent
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Abstract
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.
Claims11
A cop preparation device for a bobbin-winding operation comprising suction means connected to a source of suction air flow for aspirating and holding an end of yarn from a cop preparatory to placement of the yam end at a predetermined position on the cop, the suction means comprising means defining a suction air flow passageway and controllable means for adjustably varying the suction force of the suction air flow applied to the yarn end in relation to predetermined parameters, the controllable means comprising means movable between a fully open position wherein suction air flow in the passageway is essentially unobstructed, a fully closed position wherein the passageway is essentially fully obstructed to prevent suction air flow therein, and at least one intermediate partially open position between the fully open and fully closed positions wherein the passageway is only partially obstructed for reduced suction air flow therein.
Dependencies are inferred from the claim text.