Abstract: A single-sided ring spinning frame having spinning positions including draft parts and winding parts on a front side of the machine frame, and rows of cans arranged on a rear side of the machine frame. Each can has a plurality of sliver accommodating areas to accommodate a plurality of rows of sliver coils therein. Sliver guides are arranged above the cans. Therefore, the number of the cans is less than the number of spinning positions, and the height of the cans is selected so that an operator can easily handle the sliver in the can. Also, a method for supplying slivers to a single-sided ring spinning frame, and a sliver transfer device used in the method are also disclosed.

Abstract: A system to convey bobbins between a first overhead rail 4 looping along fine spinning frames 1A to 1M and a second overhead rail 6 connected to roving frames 2A and 2B. The first overhead rail 4 is constructed as a single loop arranged all along the fine spinning frame, while the second overhead rail 6 is constructed as a single loop arranged around the roving frames 2A and 2B. The first and second overhead rails 4 and 6 are connected by a branched rail 7 for returning a bobbin carriage 10 with empty bobbins 12 and by a branched rail 8 for supplying a bobbin carriage 10 with full bobbins 11.

Abstract: A sliver piecing unit 80 includes three sets of separable rollers 804 and 844, 806 and 846, and 808 and 848 for nipping a sliver S1 fed from a consumed can to a spinning machine. A throttling nozzle 870 is arranged between the second and third sets of rollers 806 and 846, and 808 and 848. The draft ratio between the first and second sets of rollers 804 and 844, and 806 and 846 can be varied between 1.0 and 2.0. A sliver feed unit 70 includes a separable first and second roller 702a and 702b for feeding a sliver S2 from a full can to the piecing unit 80 so that the slivers S1 and S2 are combined. The draft ratio between the first and second sets of rollers 804 and 844, and 806 and 846 is controlled to obtain combined slivers of a thickness corresponding to that of a single sliver. A nipping belt 884 and nipping roller 886 are provided at the outlet from the third set of the rollers 808 and 804 for obtaining a rubbing movement in the combined slivers.

Abstract: In a roving winding apparatus applied to a roving frame provided with a plurality of draft parts and corresponding bobbin wheels, a bobbin shaft for driving the bobbin wheel, a bobbin rail on which the bobbin shaft is rotatably horizontally mounted along the longitudinal direction thereof, a lifting motion mechanism for lifting the bobbin rail, and a main motor for driving the draft parts at a predetermined rotational speed, wherein the bobbin shaft is driven under a controlled condition created by a servomotor to follow a digital signal output from the rotation angle detecting device applied to the common bottom front roller of the draft parts, in an adjusted optimal condition under the control of a computer system, incorporated with the lifting motion of the bobbin rail.

Abstract: When a full bobbin signal from a counter CCM counting the number of rotations of the front roller (3) is output, the control element (28) outputs a signal directed to the control motor (M2) of a unit (29) for reciprocating a bobbin rail (10). As a result, the rotation of the control motor (M2) is combined with the rotation of a differential gear (14 ) connected to the main motor (M1), so that a reciprocating movement of the bobbin rail (10) after the full bobbin state is obtained which is faster than that obtained during a usual taking up operation of the roving, which causes the roving to be wound on the bobbin in a much coarser state than usual. A limit switch (LSP) detects a predetermined desired position of the bobbin rail (10), and the control element (28) outputs a signal directed to the unit (29), whereby the main motor (M1) and the control motor (M2) are stopped.

Abstract: A method and apparatus for transporting roving bobbins in a spinning factory utilizing a factory building having several floors for the installation of spinning machines such as roving frames and ring spinning frames, between specified positions on a floor where roving frames are installed and positions for carrying out a roving bobbin exchanging operation for ring spinning frames, wherein a guide rail system for displaying a plurality of bobbin carriers provided with a plurality of bobbin hangers is suspended from the ceiling of the floor on which the ring spinning frames are installed and transporting passages, provided with apparatus for displacing a plurality of pairs of roving bobbins by successive unit cycle operations composed of a first upwards displacing operation and a second downwards displacing operation, is arranged between each of the above-mentioned specified positions and a corresponding transfer position for the bobbin carriages at which the roving bobbins can be transferred thereto and there

Abstract: A method for transporting articles in a system for transferring such articles between different machines provided on different floors of a building, wherein a predetermined number of articles are taken from a machine, the articles being hung in rows on a carrying unit moving along a guide rail, taking the articles to a lift, storing the articles in the lift while the articles are still hanging on the carrying unit, transferring the articles to another floor, withdrawing the articles from the lift while still hanging on the carrying unit, moving the carrying unit on a guide rail, and taking the articles to another machine by moving the carrying unit along the guide rail.

Abstract: An apparatus for preventing an unwinding of a roving end from a full package roving bobbin during the transportation thereof. This apparatus is constructed in combination with the transportation mechanism formed in the known doffing mechanism or known overhead roving bobbin transportation system, in a condition such that a part of the constitutional mechanical elements of such known transportation mechanisms are utilized as a part of the constitutional mechanical elements of the apparatus according to the present invention. In the apparatus of the present invention, a pressing member is utilized for applying pressure against the peripheral face of the winding portion of each roving bobbin while this bobbin is rotating, and therefore the free end of the roving is firmly attached to the above-mentioned peripheral face of the roving bobbin. Consequently, any possible problems due to an unexpected unwinding of the roving can be effectively prevented.

Abstract: An apparatus for controlling the roving winding speed in a roving frame, in which a roving position detecting unit detects central positions of vibration of the roving in the vertical direction while suspended between a front roller of the drafting device and a flyer top by means of a plurality of photoelectric sensors. An average central vertical position of the vibrating roving is computed from the values measured by the roving position detecting unit, and a correction amount of the rotation speed of a bobbin is computed from the difference between the average central position and a desired value for controlling the roving winding speed and from a correction coefficient. A correction signal is generated corresponding to the correction amount, and the rotation speed of the bobbin is regulated based on the correction signal.

Abstract: A method and an apparatus for simultaneously changing bobbins in a fly frame wherein flyers supported from above are arranged in a zigzag fashion in front and back rows.