Cloth feeding device for tentering machines
AssigneeBruckner Trockentechnik GmbH & Co. KG
InventorArno Becker
Life of this patent
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Abstract
A driven feed roller is disposed above a pair of needle chains. Members for spreading the web edges are located immediately preceding the feed roller, and a pair of needling rollers for impaling the web edges on the needle chains are located immediately following the feed roller in the direction of web movement. A device for sensing the web edges is arranged to scan the web edges on the feed roller.
Claims10
A tentering machine for a cloth web, comprising a pair of endless needle chains, each having a driven needling roller cooperating therewith for impaling an edge of the web on an associated needle chain, the two needling rollers being substantially coaxial, and means for adjusting the lateral positions of the needling chains and needling rollers associated therewith, wherein the improvement comprises
- a. driven feed roller means arranged ahead of and substantially tangent to the needling rollers, and having a web-driving periphery extending substantially continuously across the width of the web, for delivering the web downwardly onto the needling rollers with substantially no intervening gap in which lateral sagging of the web can occur,
- b. members for spreading the web edges located immediately ahead of the feed roller means, and
- c. edge-sensing means directed against the periphery of the feed roller means, for sensing the web edges immediately after they have been spread, while the web is supported across its entire width by the feed roller means, and for controlling the means for adjusting the lateral positions of the needling chains and needling rollers associated therewith.
Dependencies are inferred from the claim text.