Drafting equipment with small double belts
AssigneeDeutsche Institute fur Textil-und Faserforschung Stuttgart
InventorsPeter Artzt, Holger Zoudlik
Life of this patent
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Abstract
A drafting equipment is provided with a small double belt for spinning machines with a fiber bundling zone which follows the pair of output rollers of the main drafting field and is followed by a pair of delivery rollers. A pneumatic compression device is provided between the pair of output rollers and the pair of delivery rollers. A pneumatic compression device is provided with a small perforated belt and a suction device extending on the side of the belt away from the fiber sliver and which sucks air through the fiber sliver between the pair of output rollers and the pair of delivery rollers.
Claims20
A belt for a spinning apparatus for bundling together a fiber sliver comprising:
- a belt defining a plurality of perforations therethrough, said perforations connected by at least one groove disposed length-wise along the perforated belt in a direction of the fiber sliver movement, said belt further comprising a plurality of traversal holes interspersed between said perforations, said traversal holes extending in a direction transverse to the direction of fiber sliver movement.
A belt for a spinning apparatus for bundling together a fiber sliver comprising:
- a belt defining a plurality of perforations therethrough, said belt further comprising a plurality of transversal holes interspersed between said perforations, said transversal holes extending a first distance in a direction transverse to the direction of fiber sliver movement and greater than a second distance of said transveral holes, said second distance in the direction of fiber sliver movement.
Dependencies are inferred from the claim text.