摘要:
A method of processing and depositing sliver includes the following steps: drafting the running sliver in a drawing frame; forwarding the sliver by the drawing frame to a coiler head having a sliver outlet; depositing the sliver by the coiler head into a coiler can located underneath the coiler head; replacing a coiler can filled with sliver with an empty coiler can; and rupturing the sliver during the replacing step. To obtain the desired rupture of the sliver, the draft of the running sliver is increased in the drawing frame to such an extent as to provide a location of reduced thickness in the running sliver. Thereupon the filled can is moved away from under the coiler head when the location of reduced thickness in the running sliver is situated in a zone of the sliver outlet of the coiler head.
摘要:
Apparatus for treatment of textile fibers and fabrics in a confined zone formed by an even number of at least two interengaging pairs of parallel rolls which cooperate with two end plates in sealing contact with the ends of the interengaging pairs of rolls, and means connecting the confined zone with at least a source of reduced pressure and use of such apparatus in apparatus means for crimping protein fibers comprising in combination means for impregnating the fibers with an aqueous solution containing an alcohol; means for storing the impregnated fibers to allow penetration of the impregnating solution; means for drafting the fibers and means for setting and drying the fibers.
摘要:
In a machine for drafting staple fibers into yarn including a plurality of vertically spaced sets of drafting rolls, each set including at least two driven drafting rolls, each set including at least two driven drafting rolls and associated cot rolls in a nip forming relationship, and removable double apron assemblies positioned between adjacent sets of drafting rolls all mounted to the machine frame, a jet twister for consolidating the fibers and a windup for the yarn, an apparatus for improving the handling of fibers during drafting. The apparatus comprises a forked arm mounting a pair of cot rolls for rotation, a multi-point linkage connecting the forked arm to the frame, providing for spacial movement of said cot rolls with respect to the axis of their companion rolls, a pneumatic cylinder with a regulated, pressurized source of fluid connected between the frame and the linkage for regulating the force exerted by the cot roll on the draft roll, and an elongated slotted guide freely riding the nip and adjacent areas of the draft and cot rolls, said guide being contoured to fit said areas and having a fibrous surface adjacent the roll surfaces for cleaning the roll surfaces. An enclosure around the jet is provided with a coanda surface below the jet to direct fluid exiting the jet away from the yarn path.
摘要:
An apparatus for measuring the drafting force and drafting force variability in conventional drafting systems. The force sensing assembly together with the drafting rolls and the associated roll driving mechanism of the apparatus are oscillatingly supported on a resilient directionally restricted pivot, so that drafting force is transformed into bending movement which movement causes angular displacement of the assembly around the resilient pivot as a center. Force measurement is accomplished via an electronic strain gauge. The electrical signals generated by the strain gauge are employed as analogs of drafting force and drafting force variability and accordingly analyzed automatically or semiautomatically.
摘要:
A closing member 1 for compressed air carrying polygonal tubes, which is inserted in a sealing manner into the polygonal tube at one end thereof. The closing member 1 includes an elastic sealing element 3, and the closing member is constructed such that it biases in its inserted state the sealing element 3 in such a manner that it seals and secures the closing member 1 relative to the polygonal tube 8. Closing members of this type are used to seal mounting tubes in yarn spinning machines with pneumatically loaded top roller support and weighting arms.
摘要:
The instant invention relates to a compression bar such as is used in the main drafting zone of drafting rollers of the textile industry. The invention considerably reduces deposits on a compression bar. The fixed compression bar has a rectangular cross-section, with its narrow faces being rounded off. On the other hand, the compression bar is rotatably mounted about its longitudinal axis, whereby the compression bar has preferably a circular cross-section.
摘要:
Drawing frame for drawing fiber sliver with draw frame rollers comprising a pair of pre-drawing rollers and a main drawing roller pair. Power transmission members in the form of flat belts are used for driving the draw frame rollers. A deflection pulley engages the flat belts between respective pairs of wheels deflecting the belts for increasing the angle that the flat belt extends around the respective wheels to provide a non-slip engagement between the flat belts and the respective wheels.
摘要:
This invention relates to a device for drawing roves or slivers of fibers on a spinning machine with a view to converting this material into spun yarns, of the type incorporating pendulous arms, constituted essentially by an assembly comprising, mounted on the support frame of the machine, a series of splined shafts extending over the whole length of the machine and common to all the work positions, said shafts being driven in rotation and, on the other hand, presser elements constituted by rollers mounted on a pivoting support arm comprising means ensuring pressure of the presser rollers against the splined shafts, wherein the pendulous arm bearing the presser elements is assembled on the frame of the machine via a support comprising means for simultaneously separating the presser rollers parallel to the line of splined shafts.