Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Patent
1997-07-11
1998-09-08
Crowder, C. D.
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
19880314, D04H 1800
Patent
active
058026827
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a brush conveyor. It also relates to a needling machine equipped with such a conveyor.
Velvet needling machines comprise a brush conveyor whose function is to carry and drive a cloth of textile fibers under a steel plate called a stripper and provided with perforations through which a set of needles penetrate alternately into the cloth and into the brushes of the conveyor. The articulated brushes of this conveyor receive, during the needling, within their tufts of hair, fibers driven by the needles and thus contribute to the obtaining of a textile product having a surface state of the velvet type. In conveyors of the prior art, the brushes, of substantially parallelepipedic shape, are oriented and aligned perpendicularly to the direction of movement of the cloth of fibers. These alignments create line markings in the direction perpendicular to the direction of movement of the cloth. Furthermore, the clearances between the brushes create line markings in the other direction. Furthermore, on each brush, the tufts of hair are aligned both with the direction of movement and in the perpendicular direction. Because of the difference in the strength of the tufts at their center in comparison with that at their periphery, this can generate an appearance defect in the textile product known as marbling. The problem which has just been described for a brush conveyor fitted to a velvet needling machine, can also be encountered in other textile machines using brushes.
SUMMARY OF THE INVENTION
The purpose of the invention is to overcome these 35 disadvantages by proposing a brush conveyor which makes it possible to obtain a textile product having a surface isotropy which is better than that obtained with the conveyors of the prior art, and to eliminate the line markings.
According to the invention, the brush conveyor, comprising an assembly of contiguous brushes constituting a conveying plane moving in a predetermined conveying direction, each brush comprising a body whose shape is substantially elongated along a principal axis and comprising on its lower face means of connecting the brush to a mechanical drive device and on its upper face holes for receiving tufts of hair and disposed in rows which are substantially parallel with the principal axis, is characterized in that the brushes are disposed in the conveyor in such a way that their principal axes are parallel and inclined by a predetermined angle with respect to the direction perpendicular to the conveying direction.
Thus, in a conveyor according to the invention, the brushes are no longer aligned in the direction perpendicular to the direction of movement of the product. It becomes possible to provide a regular installation of tufts of hair whilst avoiding the creation of alignments of tufts which would be parallel with or perpendicular to the direction of conveying or of movement, experience having shown that the existence of such alignments contributed to the arising of marking defects in the product.
In a particular embodiment, the brush conveyor furthermore comprises, as a drive device, an assembly of belts driven by drive means and, as a means for the mechanical connection of the brushes to the drive device, an assembly of connecting rails disposed perpendicular to the conveying direction and integral with the belts, each rail being designed to receive one transverse row of contiguous brushes.
Each brush furthermore comprises, in its body, a slide designed to receive a connecting rail, this slide being oriented with respect to the principal axis of the brush in such a way that the brush has a predetermined angle of inclination with respect to the axis perpendicular to the conveying direction.
According to another aspect of the invention, there is proposed a needling machine comprising needling means provided for causing a set of needles to penetrate, with an alternating motion, through a stripper and into a cloth of fibers supported and driven by a brush conveyor according to the invention.
REFERENCES:
patent: 4651393 (1987-03-01), Dilo et al.
patent: 5117541 (1992-06-01), Leuchtenmuller
patent: 5473802 (1995-12-01), Dilo
Jourde Bernard
Louis Francois
Asselin
Crowder C. D.
Worrell Larry D.
LandOfFree
Brush conveyor and needling machine equipped with same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Brush conveyor and needling machine equipped with same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brush conveyor and needling machine equipped with same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1269866