Apparatus on a spinning preparation machine, for example, a draw frame, flat card, combing machine or the like, having at least two driven drafting systems
AssigneeTrutzschler GmbH & Co. KG
InventorFritz Hösel
Life of this patent
Estimating the term…
Abstract
In the case of an apparatus on a spinning preparation machine, e.g. a draw frame, flat card, combing machine or the like, in particular a double-head draw frame, with at least two driven drafting systems having force-transmitting means for driving drafting rollers of the drafting systems and at least one drive motor, a coupling is present between a drive motor and a drive shaft. To allow the effectiveness and efficiency to be substantially increased in a structurally simple and cost-effective manner, the respective drive chains are connected via a respective controllable coupling to the motor and the rotational speed of the motor can be reduced for the engagement and disengagement process.
Claims20
An apparatus on a spinning preparation machine, having:
- a first driven drafting system for drafting at least one fibre sliver with drafting rollers, and having at least one force-transmitting element for driving the drafting rollers of the first drafting system;
- a second driven drafting system for drafting at least one fibre sliver with drafting rollers, and having at least one force-transmitting element for driving the drafting rollers of the second drafting system;
- and
- at least one drive motor;
- wherein a force-transmitting element for the first drafting system and a force-transmitting element for the second drafting system are each connected via a respective separately controllable coupling to a said drive motor and the rotational speed of the motor can be reduced for selectively engaging and disengaging one of the separately controllable couplings.
A method of operating a drafting apparatus having first and second driven drafting systems driven by at least one common drive motor, comprising reducing the speed of a said drive motor, disengaging a drive element of the first drafting system from the drive motor, increasing the speed of the drive motor, and continuing to drive the second drafting system during and subsequent to said disengagement of a drive element of the first drafting system.
Dependencies are inferred from the claim text.