Textiles: fiber preparation – Working – Carding
Patent
1996-05-10
1997-09-16
Calvert, John J.
Textiles: fiber preparation
Working
Carding
19 99, D01G 1502, D01G 1524
Patent
active
056666977
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The subject of the invention is an improved embodiment of a card of the tandem-card type, that is a card comprising a feed assembly, initial rollers (such as a taker-in and a conveying-carding roller), a first carding cylinder, a first doffer roller, a second carding cylinder, a second doffer roller and a web removing assembly.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a structure offering advantages that will become obvious as the following text is read.
A card of the tandem-card type--comprising a feed assembly, initial rollers (such as a taker-in and/or a conveying-carding roller) a first carding cylinder or main cylinder, a first doffer roller, a second carding cylinder, a second doffer roller and a web removing assembly--according to the invention is characterized in that the fixed carding units, which cooperate with the clothing of the first carding cylinder or main cylinder, are arranged around the lower periphery of the latter, and in that the first doffer roller cooperates not only with the first carding cylinder, but also directly with the second carding cylinder, thereby eliminating a transferer-stripper from between them.
In practice said carding units are arranged around a fraction of approximately 270.degree. around the lower periphery of said first carding cylinder, while the remaining upper arc is available for the conveying and carding roller and for the first doffer roller.
The carding units are separated by a suitable distance from each other in order to enable impurities to be eliminated, their removal being facilitated by gravity.
Advantageously, underneath said first carding cylinder and its associated fixed carding units is a collecting hopper with suction means operating from beneath.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be understood more clearly on examining the description and accompanying drawing, the latter showing a practical non-restricting embodiment by way of example. In the drawing:
FIG. 1 schematically shows a tandem-card assembly which realizes the arrangement according to the invention; and
FIG. 2 shows for comparison an earlier carding frame.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1 of the accompanying drawing, the numeral 1 indicates the introducing system which may simply take the form of an introducing roller powered by a drive 1A. The material is fed to a working roller known as a taker-in, indicated 3 as a whole, which rotates in the direction shown by its arrow and is covered with clothing whose points are inclined as shown in the drawing in order to strip the material. The taker-in roller 3 is essentially a cleaning and carding roller. The roller 3 may have blades such as 5 underneath it to cooperate with the clothing of the roller 3. The numeral 7 indicates a conveying and carding roller that rotates in the direction shown by its arrow, the points of its clothing being inclined in the direction indicated in the drawing in order to strip the material from the taker-in roller 3 and transfer it directly to a first carding cylinder or main cylinder 9; this cylinder rotates in the direction indicated by its arrow and the points of its clothing are inclined as indicated in the drawing, in order to remove the material from the conveying roller 7 and perform the carding with fixed carding units, which are indicated as a whole by the numeral 10; the units 10 are separated by a suitable distance from each other in order to enable impurities to be removed, this being assisted by gravity. Also cooperating with the carding cylinder 9 is a doffer roller 12 which removes the material from the cylinder 9; said doffer roller 12 rotates in the direction shown by its arrow and the points of its clothing are inclined as indicated in the drawing.
It will be seen from the drawing that, characteristically, both the conveying and carding roller 7 and the first doffer roller 12 are above the main cylinder or carding cylinder 9, whereas all the fixed carding units 10 are arranged in the lower region o
REFERENCES:
patent: 3097399 (1963-07-01), Alston
patent: 3999249 (1976-12-01), Katoh et al.
patent: 4115903 (1978-09-01), Barber
patent: 4128917 (1978-12-01), Varga
patent: 4219908 (1980-09-01), Winch et al.
patent: 4797978 (1989-01-01), Giuliani
patent: 5016321 (1991-05-01), Hollingsworth et al.
patent: 5111551 (1992-05-01), Hollingsworth et al.
LandOfFree
Card of the tandem-card type with fixed carding units below a ca does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Card of the tandem-card type with fixed carding units below a ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Card of the tandem-card type with fixed carding units below a ca will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-210130