Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Patent
1990-06-08
1992-09-08
Schroeder, Werner H.
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
19115A, 28116, D04H 108, D01G 1540
Patent
active
051447312
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an automatic lap piecing method to be carried out on a textile machine, and an apparatus for carrying out the same. More specifically, to a method of piecing together the trailing end of the lap sheet of a preceding lap and the leading end of the lap sheet of a succeeding full-lap, when the preceding lap is depleted in a textile machine such as a ribbon lap machine, a comber or the like, and an apparatus for carrying out such a method.
BACKGROUND ART
A textile machine, for example, a ribbon lap machine, is stopped and a pilot lamp is lit upon the depletion of the lap feeding a lap sheet to the ribbon lap machine. Upon observing the lit pilot lamp, the operator interrupts the present work and goes to the ribbon lap machine, or goes to the ribbon lap machine after completing the present work, removes an empty bobbin, supplies a full lap, unwinds the lap sheet of the full lap, superposes the leading end of the lap sheet on the trailing end of the lap sheet remaining on the plate, and smooths down the superposed lap sheets for piecing. Since a usual ribbon lap machine, in general, has six delivery units, the lap piecing procedure is repeated six times, the ribbon lap machine is inched until the leading ends of the new lap sheets pass the curl plates, respectively, and then the ribbon lap machine is restarted.
Therefore, a textile machine, such as a ribbon lap machine, has a disadvantage in that the efficiency of operation thereof is very low, and accordingly, an automation of the lap changing operation is urgently required. Although the removal of empty bobbins and the supply of full laps can be achieved successfully by the conventional automated means, neither a practically effective automatic lap sheet piecing method nor an automatic lap sheet piecing apparatus for automatic lap sheet piecing operation, which is the most important operation, has been proposed.
DISCLOSURE OF THE INVENTION
An object of the present invention is to provide an automatic lap sheet piecing method and an apparatus for carrying out the same, by which an automatic lap piecing operation, which has not hitherto been achieved, is accomplished.
The object of the present invention can be attained by an automatic lap piecing method comprising the steps of: attracting the leading end of a succeeding lap sheet of a full lap by suction with a tubular member provided with suction holes in the circumference thereof; moving the tubular member from a position near the full lap to a position corresponding to the trailing end of a preceding lap sheet, so that the leading end of the succeeding lap sheet is superposed on the trailing end of the preceding lap sheet; releasing the leading end of the lap sheet from the tubular member; and moving the tubular member so as to smooth down at least the superposed portions of the two lap sheets.
An apparatus suitable for carrying out the foregoing automatic lap piecing method comprises: a first driving device; a first driving shaft journaled on the frame of the textile machine and driven by the first driving device; a first transmission means mounted on the first driving shaft; a second transmission means comprising an input means interlocked with the first transmission means, and an output means kinematically interlocked with the output means; a second driving shaft movably supporting the input means, extended in parallel to a feed roller, and driven by a second driving device; a shaft extended in parallel to the second driving shaft, and supporting the output means; a second transmission means supporting member having one end movably supporting the shaft supporting the output means so that the axis of the shaft supporting the output means is able to revolve about the axis of the second driving shaft, and the other end fixed to the second driving shaft; at least one arm having one end fixed to the shaft supporting the output means, and the other end extending toward a circumferential surface of a full lap supported on a lap feeder; a tubular member fixed
REFERENCES:
patent: 4809920 (1989-03-01), Bachinger
patent: 4996747 (1991-03-01), Wichtermann et al.
patent: 5038441 (1991-08-01), Mondini et al.
Hotta Takaomi
Kobori Seiji
Serizawa Yasuhiro
Sugie Tosio
Yamada Yoji
Kabushikikaisha Hara Shokki Seisakusho
Mohanty Bibhu
Nisshinbo Industries Inc.
Schroeder Werner H.
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