US 5,974,778 AGranted

Arrangement for open-end spinning comprising a driven suction roller

AssigneesHans Stahlecker, Fritz Stahlecker

InventorFritz Stahlecker

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Abstract

In the case of an arrangement for open-end spinning, a driven suction roller is provided which in a take-up zone takes up fiber material opened to single fibers and transports it to a suctioned yarn formation line. The yarn formation line is defined by a suction insert arranged in the inside of the suction roller, and extends transversely to the transport direction of the suction roller on the surface thereof. In extension of the yarn formation line a twist device is provided. On the side facing away from the twist device, the suction roller is supported on the suction insert while freely overhanging same, so that the twist device reaches directly up to the suctioned yarn formation line. The yarn formation line is preferably inclined at an angle towards the take-up zone on the side facing away from the twist device.

Claims24

Dependent claims

An open-end spinning assembly comprising:

an opening device operable to open a fiber sliver beard into separate fibers,
a rotatably driven suction roller disposed to take up individual fibers directly after the fiber beard has been opened and operable to transport the fibers from the opening device to a suctioned yarn formation line of the suction roller formed by a suction slot extending in an axial direction up to adjacent an end of the suction roller, and
a twist device operable to apply twist to yarn supplied from the suctioned yarn formation line,
wherein the suction roller is rotatably supported at bearings spaced from a suction roller end which faces the twist device and with no suction roller bearing elements between the twist device and the suction roller, to accommodate positioning of an exit end of the suctioned yarn formation line immediately adjacent the twist device thereby minimizing hanging down of the newly forming yarn tip between the suctioned yarn formation line and the twist device.

1 more element

Dependencies are inferred from the claim text.