Open-end spinning device
AssigneeSchubert & Salzer
InventorKarl Handschuch
Life of this patent
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Abstract
In an open-end spinning device with two friction rollers driven in the same direction, located next to each other and forming a spinning nip, at least one of such friction rollers has a perforated casing which is over-mounted at one end. Such roller further contains a suction insert with a suction orifice connected to a negative pressure (i.e. vacuum) source. The perforated casing is supported on a shaft, one end of which is received and supported in a portion of the suction insert. The suction insert is located within the casing, directly behind it, and has a constant cross-section up to its connection with a suction line. In such manner, a maximum suction cross-section is provided with minimum support requirements.
Claims19
An open-end spinning device, comprising:
- a pair of friction rollers operatively associated to define a spinning nip;
- at least one of said rollers being provided with a perforated casing so as to embody a suction roller;
- a suction insert, having a suction orifice therein, disposed within said suction roller and adapted for connection to a suction source;
- and
- a support shaft with a rotatable bearing received about a longitudinal portion thereof, said roller bearing supporting one axial end of said suction roller perforated casing with the other axial end of said casing being unsupported, and said shaft terminating in one axial end of said suction insert;
- and wherein
- said suction insert is located directly behind said perforated casing, and has a constant cross-section along its entire longitudinal axis so as to provide a uniformly maximized suction cross-section with the smallest possible diameter suction roller perforated casing.
In an open-end spinning device having two friction rollers located next to each other, forming a spinning nip and driven in the same direction, at least one of which is equipped with a perforated casing to define a suction roller over-mounted at one end and containing a suction insert with a suction orifice connected to a suction source, said device further including:
- a shaft for supporting one axial end of said casing, the other axial end of which is free, one end of said shaft being set into said suction insert, whereby said suction insert is received within said casing at close intervals thereto, and has an interior cross-section remaining constant up to said connection thereof with said suction source.
A device as in claim 17, wherein one axial end of said casing is adapted to be in a direction of thread draw-off of said device, and said shaft is opposite to such axial end and is hollow for receipt of a U-shaped suction tube, which tube is bent towards said spinning nip and provided with suction for controllably aspiring and storing a joining thread.
An improved suction structure for an open-end spinning device of the type including a pair of rotatable friction rollers defining a spinning nip, one of said roller having a perforated casing to define a suction roller with a suction insert received therein and connected to a vacuum source adjacent one of its axial ends, said structure comprising:
- a shaft for providing cantilevered support of said casing, with one end of said shaft terminating in an axial end of said suction insert opposite from said one axial end thereof connected to a vacuum source;
- whereby said suction insert is provided with a maximum suction cross-section over its entire axial length, from said shaft termination to said vacuum source connection thereof, with minimum support structure required therefor.
Dependencies are inferred from the claim text.