Suction roller for an open-end spinning machine
AssigneesFritz Stahlecker, Hans Stahlecker
InventorFritz Stahlecker
Life of this patent
Estimating the term…
Abstract
In the case of an open-end spinning machine, a suction roller is provided which serves to transport a fiber veil, expanding transversely to the circumferential direction of the suction roller, to a yarn formation line. The length of the transport path and the width of the fiber veil are determined by defining edges of a suction insert located inside the suction roller. At least one of the defining edges extends at least along a section of the transport path at an acute angle to the circumferential direction. Thus the fiber veil is widened in comparison to the sliver-shaped fed fiber material and/or the fiber tip at the beginning of the yarn formation line is shortened.
Claims22
A suction roller for an open-end spinning machine for transporting a fiber veil along a transport path which extends between a fiber incoming position on the circumference on the suction roller to a yarn formation line extending transversely of the circumference of the suction roller and disposed downstream of and circumferentially spaced from the fiber incoming position with said fiber veil expanding transversely of the suction roller and consisting of fibers extending in the circumferential direction of the suction roller, said suction roller comprising a suction insert with defining edges defining a suction area which determines the circumferential length and width of the fiber veil along the transport path during use of the suction roller to transport the fiber veil,
- wherein one of the defining edges which is on a side of the fiber veil further away from a withdrawal device for withdrawing the yarn from the suction roller extends at least along a section of the transport path at an acute angle with respect to the circumferential direction of the suction roller.
Suction roller assembly for an open-end spinning machine for transporting a fiber veil along a transport path which extends between a fiber incoming position on the circumference of the suction roller to a yarn formation line extending transversely of the circumference of the suction roller and disposed downstream of and circumferentially spaced from the fiber incoming position with said fiber veil extending transversely of the suction roller and consisting of fibers extending in the circumferential direction of the suction roller, comprising:
- a hollow perforated suction roller, and
- a suction control insert disposed inside said suction roller operable to control suction forces acting on a fiber veil transported along the transport path on a surface of said suction roller with at least changing in the width of the fiber veil along the circumferential length of the transport path along an edge further away from a withdrawal device for withdrawing the yarn from the suction roller.
Dependencies are inferred from the claim text.