Abstract:
A clothing wire for a clothing roller of a carding machine extends in a wire longitudinal direction and having a base segment, which is thicker transversely to the wire longitudinal direction. A leaf segment, which is narrower compared to the base segment, protrudes from the base segment. A plurality of teeth is formed on the leaf segment along the clothing wire in the wire longitudinal direction. Each tooth has two leaf segment lateral surfaces adjoining the base segment. On at least one of the leaf segment lateral surfaces, at least one projection is formed on each tooth. The cross-sectional profile of the projection is asymmetric and preferably has the contour of a nose. The design of the clothing wire results in a homogenization or parallelization of the fibers, with little wear of the clothing wire and less damage to the fibers.
Abstract:
In an apparatus on a carding machine having a cylinder and at least one doffer, in which the cylinder and the doffer each have an all-steel clothing having saw teeth, the clothing on the cylinder and the clothing on the doffer each have a point density per square inch (ppsi). For achieving increased production rate with the same quality or improved quality with the same production rate, the clothing on the doffer has a point density of at least 400 ppsi, and the ratio between the point density of the clothing of the cylinder and the point density of the clothing of the doffer influences the proportion of the fibre mass that is transferred from the cylinder to the doffer per revolution of the cylinder in the sense of a higher production rate or higher quality of the card.
Abstract:
For an improvement of the coating of disintegrator rolls, an accessory wire in the area of a tooth base is coated with a reduced quantity of hard material granulate as compared to the coating on the tooth. With the proposed coating, the advantage is gained that a precoated accessory wire, without damaging the coating, can subsequently be wound on an accessory wire carrier.
Abstract:
A method producing opening roller rings for open-end spinning machines whereby a saw-tooth wire provided with a foot, is helically wound on a core and welded together to form a tube; the core is forced out of the tube and is subsequently cut to form opening roller rings.
Abstract:
Metallic card clothing is illustrated having sharp metallic points at tips of teeth formed by punching and thereafter exerting a mechanical force bending metal over at the tips of the teeth.
Abstract:
A metallic card clothing for use in a carding machine is produced by digging up at fixed intervals a plurality of regularly spaced projected ridges or one projected ridge formed on one flat surface of a steel strip thereby giving rise to a plurality of serrated component elements having a triangular shape in a plane as viewed in the longitudinal direction of the projected ridges and a lateral shape resembling the teeth of a saw. Owing to the specific shape of the needles formed in the component elements, this metallic card clothing excels in carding action and resistance to wear.
Abstract:
The tool of the invention includes a wire packing element which is set in abutment with the side of carding wire being wound onto a carding drum end forces the other side of the wire into abutting fit with the previously wound wrap of wire. While so doing, the tool subjects the portion of wire just received by the drum's surface to numerous impacts while still forcing the aforesaid abutments. It is believed that these impacts alternating with reliefs from the added force causes the wire to shift minutely to attain the stablest configuration which would then not shift during use of the clothed carding cylinder but retain the desired patterning of points through long termed use.
Abstract:
The rigid clothing comprises a plurality of juxtaposed metallic strips, each comprising a base for fixing it to the flat and a row of spikes which act on the fibers, the spikes having two effective surfaces, a first active front surface for orientating and combing the fibers and a second active rear surface for holding the fibers. The two effective surfaces are on the same respective spike of a strip and all spikes on the strip are identical in shape.
Abstract:
Metallic wire card clothing is provided having a sharpened leading edge on each of the longitudinally aligned teeth formed in a metallic strip by an apparatus which includes a punch. During punching, the relative direction of travel of the punch is illustrated as inclined at an acute angle in relation to the moving strip and a die cooperating therewith. The method contemplates thus inclining the strip and while the strip is so inclined, punching the teeth as the strip is continuously fed past the die. The strip may be inclined in respect to the direction of travel of the punch either transversely or longitudinally, preferably, both.
Abstract:
When combing yarn, and particularly synthetic yarn, the metallic card clothing wire has a short life. To extent the life of the card clothing wire, a hard layer selected from a group consisting of vanadium carbide, chromium carbide, tungsten carbide, molybdenum carbide, niobium carbide, tantalum carbide, titanium carbide, zirconium carbide, hafnium carbide and iron boride is difused onto the steel. This hard layer has a smooth working surface and a uniform thickness in the range of from about 8 to 20 microns.