摘要:
Method and apparatus for wetting thread as it is being twisted in a double twist twisting spindle assembly, preferably by thread contact with the wettable guide or contacting surface formed by the inner wall of a balloon limiting mantle which encircles the twist spindle. The method essentially requires a liquid thread treating agent to be delivered or directed onto the thread contacting surface under regulated pressure impulses in an amount which provides a predetermined takeup of the liquid by the thread. Suitable apparatus includes dosing means wherein the pressure on the liquid can be alternately raised and lowered to create a regulated pattern of pressure impulses, for example by using a suitable impulse generator to regulate the pressure impulses. There is provided a more effective and controlled wetting of the double twisted threads.
摘要:
In a textile yarn processing machine, such as a two-for-one twister or the like, having a plurality of spindle assemblies each including a driven rotor mechanism and a stationary yarn supply package carrier mechanism each defining therewithin joining elongate yarn passageways; the combination therewith is provided of pneumatically operated threading mechanisms for automatically threading yarn withdrawn from the supply package through the passageways and which is characterized by a construction which eliminates the necessity of predetermined positioning of the rotor mechanism for the threading operation and, preferably, provides for the supply of air under pressure thereto only through stationary spindle assembly components, as follows. A selectively operated, air injector nozzle is positioned at the juncture of the yarn passageways for creating an air suction through the carrier mechanism passageway and a jet of positive airflow through the rotor mechanism passageway for pneumatic threading of the yarn. Devices are provided for selectively supplying air under pressure, preferably through the stationary carrier mechanism, to the injector nozzle regardless of the position of the rotor mechanism.
摘要:
In each twisting unit of a multiple twisting apparatus, a twofor-one twisting assembly imparts a first twist to each component yarn while a ring twisting assembly imparts a second twist to a doubled first-twisted yarns. A plurality of first twisted yarns are doubled under tension control and the doubled yarn is taken up by a feed mechanism so as to be supplied to the ring twisting assembly under tension control via a yarn passage formed behind the two-for-one twisting assemblies. The two-for-one twisting assemblies are arranged in two alignments along a lengthwise direction of the apparatus. All driving members are driven synchronously at a starting period and at a time of stopping the twisting operation.
摘要:
A device for temporarily storing yarn for immediate use by a yarn consuming textile apparatus, such as a winder, a knitting machine, or for the filling thread of a shuttleless loom. The device includes a yarn collecting drum on which yarn from a supply source is wound temporarily and then removed under a controlled, uniform tension. The device eliminates the wide variations in yarn tension which occur when a yarn is delivered from a source, such as a cone or a package, and permits the yarn to feed to a textile machine at a substantially constant tension.
摘要:
A carrier for packages of yarn wound on hollow, elongate cores having cooperating means at each end thereof for axially, detachably interlocking at least two cores together for providing superimposed packages of yarn for simultaneous or successive withdrawal of yarn therefrom for further processing. The carrier is particularly adaptable for inserting the yarn packages in and withdrawing the yarn packages from a spindle assembly having a basket mechanism of a textile yarn twister. The carrier comprises a generally elongate body portion, means on the body portion cooperating with the interlocking means on one end of the cores for axially, detachably interlocking the carrier with the interlocked yarn package cores, and means on the body portion for manually gripping and handling the carrier and interlocked yarn packages without touching the yarn for mounting and withdrawal of the yarn packages in a textile machine.
摘要:
A rapidly mounted twist spindle in twisting machines, especially double-twist twisting machines, in which the spindle housing becomes securely but removably axially positioned and rotatably locked onto a carrier member through paired fastening means connected to the housing and the carrier, respectively. Such twist spindles are employed in large numbers for a twisting of threads or yarns.
摘要:
In a two-for-one yarn twister, a specially shaped yarn guide path is formed radially extending from a central longitudinal aperture of a spindle to a peripheral yarn guide of a storage disc. Further, a successive yarn guide path from the peripheral yarn guide towards an upper yarn guide member is given as a clearance between an inside and outside balloon limiting mantle. Initial yarn guiding is performed by firstly tying a leading end of a yarn drawn out of a package to a trailing end of a flexible yarn conductor, next, inserting a leading end of the conductor successively into a central aperture of an upper tension device of the twister.
摘要:
A THREAD SPINNING OR TWISTING APPARATUS WHEREIN A THREAD IS DRAWN UP OFF A YARN PACKAGE ON A HOLLOW CORE, THEN PASSED AXIALLY DOWN THROUGH THE CORE AND TWISTED BY A FLYER ROTATING ABOUT THE CORE AXIS AND BENEATH THE YARN PACKAGE. THE THREAD IS FINALLY LED AXIALLY UP BETWEEN THE PACKAGE AND A CIRCUMFERENTIALLY CONTINUOUS (UNBROKEN AND UNINTERRUPTED) SLEEVE COAXIAL THEREWITH A FORMING THEREWITH AN ANNULAR BALLON-CONFINING SPACE. A THREADING ARRANGEMENT COMPRISING AN UPWARDLY DIRECTED CONCAVE NOZZLE ACTUATABLE BY A KNEE OR FOOT VALVE DIRECTS A GAS STREAM UP IN THE SPACE BETWEEN THE PACKAGE AND THE SLEEVE TO PROJECT THE THREAD THERETHROUGH.