Continuous adjustable backing bar for profiling coater blade

Details Continuous adjustable backing bar for profiling coater blade Continuous adjustable backing bar for profiling coater blade

D - Textiles, Paper

21

H

D21H 23/34 (2006.01) B05C 11/04 (2006.01) D21G 3/00 (2006.01) D21H 25/10 (2006.01)

Patent

CA 2179059

A backing bar assembly (20) has a plurality of positively positionable backing bar units (40) which are retained within an inverted U-shaped housing by semi-cylindrical lifters (68) which are adjusted by adjustment screws (60) connected to the housing. Each backing bar unit (40) has concave end surfaces (54) which face the adjacent backing bar units. A pair of backing bar units is engaged by the semi-cylindrical convex surfaces (72) of a lifter and may thus be vertically positioned by rotation of the adjustment screw. By adjusting two backing bar units at a single screw, dramatic discontinuities between backing bar units are avoided. An inflatable resilient seal (50) is engaged by all the backing bar units and extends between the units and the blade to transmit force to the blade to retain it in a desired position.

Ensemble de barres de renfort (20) à commande positive (40) maintenues dans un logement en U inversé par des boulons hémi-cylindriques (68) ajustables à l'aide de vis de réglage (60) liées au logement. Chacune des barres de renfort (40) présente à ses extrémités latérales des surfaces (54) concaves faisant face à la barre de renfort contiguë. Deux barres de renfort contiguës se trouvent donc en prise avec les surfaces convexes hémi-cylindriques (72) d'un écrou et peuvent de ce fait être déplacées verticalement au moyen de la vis de réglage. Le fait de pouvoir régler deux barres de renfort contiguës avec la même vis évite les discontinuités importantes entre barres. Un joint élastique gonflable (50) en contact avec toutes les barres de renfort et s'étendant entre les barres et la lame exerce sur cette dernière une force qui la maintient dans la position voulue.

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