Textiles: weaving – Special-type looms – Pushed shed pocket
Patent
1997-12-18
1999-09-07
Falik, Andy
Textiles: weaving
Special-type looms
Pushed shed pocket
D03D 4700
Patent
active
059471638
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a weaving rotor with beat-up lamella in accordance with the preamble of claim 1.
A weaving rotor for a series shed weaving machine with beat-up lamella for the weft thread known from the Patent Specification EP 0 137 071, where beat-up lamella arranged to follow one another in the direction of rotation of the weaving rotor are placed centrally between two beat-up lamella arranged to precede them. This arrangement has the disadvantage that the beat-up lamella have a relatively small spacing in the direction of extent of the axis of rotation of the weaving rotor so that it is difficult to reliably lay in a warp thread guided by laying-in elements between adjacent beat-up lamella. In particular in the case of a high warp thread density, there is the danger that the individual warp threads will be inserted incorrectly into the intermediate spaces between the beat-up lamella, which would lead to reediness or to weave faults.
SUMMARY OF THE INVENTION
The object of the invention is to provide a weaving rotor which overcomes the named disadvantages.
An advantage of the invention is to be seen in the fact that the distance between two beat-up lamella can be enlarged in the direction of extent of the axis of rotation of the weaving rotor so that a warp thread can be laid in between the two beat-up lamella with increased reliability. A further advantage is to be seen in the fact that the weft threads can be uniformly beat up to a cloth edge by the beat-up lamella which are arranged so as to be displaced in the direction of rotation of the weaving rotor.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be explained in the following with reference to an exemplary embodiment. Shown are:
FIG. 1a is a plan view of a weaving rotor;
FIG. 1b is a side view of a weaving rotor and;
FIG. 1c is a further plan view of a weaving rotor.
DESCRIPTION OF THE SPECIFIED EMBODIMENTS
FIG. 1b shows a cylindrical weaving rotor 1 on the surface of which are arranged shed forming shed holder elements 4 which place the warp threads 6a, 6b-6h extending in the direction of rotation 7 of the weaving rotor 1 into an upper shed position or a lower shed position respectively, so that a weft insertion channel 4d arises through which a weft thread can be inserted by means of a fluid such as air. A weft insertion channel 4d extends parallel to the shaft 8 of the weaving rotor 1 and extends over the entire width of the weaving rotor. Shed holder elements 4 and beat-up lamella 3a, 3b are arranged alternately in the direction of rotation 7 on the surface of the weaving rotor 1. The beat-up lamella are executed as whole beat-up lamella 3a or as half beat-up lamella 3b. The whole beat-up lamella 3a are designed in such a manner that they effect a beating up to the cloth edge 6a of a weft thread 9b which is completely inserted between the warp threads 6a-6h and is located directly in front of the cloth edge 9.
FIG. 1a shows a plan view of the surface of a cylindrical weaving rotor 1. Shed holder elements 4 which have projecting parts 4a, 4b and form a saddle surface 4c between them are arranged on the weaving rotor 1. The warp threads 6a-6h are laid against the surface of the weaving rotor 1 in such a manner that a warp thread 6a-6h either passes over a saddle surface 4c of the shed holder element 4 so that the warp thread takes on an upper shed position, or in such a manner that warp thread 6a-6h passes between two shed holder elements 4 and thereby adopts a lower shed position. In this manner a shed is formed through which a weft thread can be inserted. Laying-in elements 5a-5h serve for laying the warp threads 6a-6h into the weaving rotor. The laying-in elements 5a-5h are movable parallel to the shaft 8 of the weaving rotor 1 and position the warp threads 6a-6h in such a manner that they are laid into the weaving rotor. When laying in the warp threads 6a-6h the position of the beat-up lamella 3a, 3b is also to be taken into account in addition to the position of the shed holder elements 4.
REFERENCES:
patent: 4487233 (1984-12-01), Steiner
patent: 4498501 (1985-02-01), Steiner
patent: 4614209 (1986-09-01), Steiner
patent: 5174341 (1992-12-01), Steiner et al.
patent: 5188154 (1993-02-01), Christe et al.
Falik Andy
Sulzer Rueti AG
LandOfFree
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