Method of operating a card and a card flat for carrying out the method
AssigneeGraf + Cie AG
InventorsRalph A. Graf, Stefan Geisser
Life of this patent
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Abstract
A method and apparatus for operating a carding machine having a drum with a drum fitting and a plurality of card flats wherein each card flat is provided with a card flat fitting. A predetermined distance between the drum fitting and the card flat fittings is adjusted by conditioning the running surfaces of the card flats.
Claims24
The method of operating and performing maintenance on a card with a drum including a drum fitting and a plurality of card flats having respective card flat fittings, comprising the steps of
- moving the card flat relative to the drum along a predetermined path while maintaining a predetermined distance between the drum fitting and the card flat fitting;
- maintaining a running surface of each card flat fitting in contact along the predetermined path with a guide surface defining the predetermined path;
- adjusting the predetermined distance between the drum fitting and the card flat fittings by reconditioning the running surfaces of the card flats.
A method of operating a card with a drum including a drum fitting and a plurality of card flats having respective card flat fittings, comprising the steps of
- moving the card flat relative to the drum along a predetermined path while maintaining a predetermined distance between the drum fitting and the card flat fitting;
- maintaining a running surface of each card flat fitting in contact along the predetermined path with a guide surface defining the predetermined path;
- adjusting the predetermined distance between the drum fitting and the card flat fittings by reconditioning the running surfaces of the card flats;
- wherein each card flat comprises a contact surface for the card flat fitting, with the contact surface being approximately parallel to the running surface of the card flat fitting;
- and
- wherein the distance between the running surface of the card flat and the contact surface for all card flats is adjusted to an identical value by the re-conditioning process.
A flat bar for a carding machine, comprising
- a support member (230) for holding a card flat fitting and a card flat running surface (244, 246) for guiding the movement of the card flat along a predetermined path;
- the card flat running surface (244, 246) is formed by a running surface member (240) which is releasably attached to the support member (230) by an attachment device including at least one attachment pin (250) which is disposed on the support member (230), and by at least one aperture (248, 249) which is disposed in the running surface member (240) and adapted to receive the attachment pin (250).
A method of operating a card with a drum including a drum fitting and a plurality of card flats having respective card flat fittings, comprising the steps of
- moving the card flat relative to the drum along a predetermined path while maintaining a predetermined distance between the drum fitting and the card flat fitting;
- maintaining a running surface of each card flat fitting in contact along the predetermined path with a guide surface defining the predetermined path;
- adjusting the predetermined distance between the drum fitting and the card flat fittings by reconditioning the running surfaces of the card flats, and wherein each card flat comprises a contact surface for the card flat fitting, with the contact surface being formed to taper approximately 0° 45′ to 1° 30′ with the running surface of the card flat fitting;
- and wherein the distance between the running surface of the card flat and the contact surface for all card flats is adjusted to an identical value by the conditioning process.
Dependencies are inferred from the claim text.