Textiles: fiber preparation – Assembling – Different materials
Patent
1991-12-20
1993-05-18
Crowder, Clifford D.
Textiles: fiber preparation
Assembling
Different materials
19 80R, D01G 1300, D01G 3700
Patent
active
052109097
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention concerns a method for optimizing fiber quality and for maintaining the fiber quality constant in automated mixing with bales of textile fibers of different qualities.
BACKGROUND OF THE INVENTION
Automatic bale-removing machinery already is known (for instance the UNIFLOC type made by Rieter AG). However such machinery incurs the drawback that control is absent during the once-programmed removal and mixing procedure. Testing for a desired fiber quality can only be carried out after mixing (for instance up to 100 bales) has been completed and therefore no correction is possible during mixing.
SUMMARY OF THE INVENTION
The object of the invention is palliation. An object of the invention is to create a method for optimizing and keeping the fiber quality constant during automated mixing of bales having fibers of different qualities, the method allowing constant monitoring of the present mixing result and correction to one or more nominal values.
Essentially the advantages offered by the invention are "on-line" optimization thanks to the method of the invention when mixing in an automated manner bales having textile fibers of different qualities.
Bales of poor quality and bales of good quality therefore can be mixed in a controlled manner, on the basis of calculated and measured values, into a fiber material of average quality. The mixture average remains constant and does not vary with the instantaneous mean of all bales, so that constant fiber quality is achieved.
In the method of the invention, the quality of the fibers of a bale is measured not just once, as is the case for the procedures of the state of the art, but instead each bale is measured layer by layer, so that quality dispersion within a single bale can be better taken into account.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawings show an illustrative implementation of the invention which at the same time elucidates the principle of operation, and is discussed below in further detail.
FIG. 1 is a schematic diagram of apparatus with which to carry out the method of the invention, and
FIG. 2 is a graph of the instantaneous parameter value of the mixture obtained from the method of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The schematically shown apparatus of the invention of FIG. 1 which serves to carry out the method of the invention essentially consists of a bale fiber-removing device 2 with a fiber-removing member 4, device and member 4 being mounted in displaceable manner for movement along a conveyance path 3. A sampling device 6 is mounted on the fiber-removing member 4 and linked by a fiber-sample transport system 13, for instance a mechanical conveyor or a pneumatic tube conveyor, with an automatic measuring and control instrumentation unit 5.
The fiber-removing member 4 is connected by a fiber-transport system 14 to a mixer 7. The bales 1a, . . . 1k . . . 1n having fiber to be mixed are mounted on both sides of the conveyance path 3 of the fiber-removing member 4 of the bale fiber-removing device 2.
The fiber-removing member 4 is displaced by the measuring and control instrument 5 from one bale to another in order to move the amounts and qualities of different fibers from the individual bales 1a, . . . 1k, . . . 1n as required for a given fiber quality and to move them to the mixer 7.
A fiber sample is taken from a particular bale 1k being processed in relation to removing the fibers, using for that purpose the sampling device 6 mounted on the removal member 4 and this fiber sample is moved by means of the fiber-sample conveyor system 13 to the automatic measuring and control instrument 5 wherein it is analyzed. The fiber sample to be analyzed preferably is withdrawn from the surface of the particular bale 1k being processed which faces the removal member 4.
Illustratively the textile analyzers used typically in the measuring and control unit 5 may be the fiber-measuring tracks (HVI) made by Spinlab Inc. or Motion Control Inc. In order to be applicable to the method of the inventio
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patent: 4100651 (1978-07-01), Wornall et al.
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patent: 4813616 (1989-03-01), Hosel et al.
patent: 4951358 (1990-08-01), Binder et al.
patent: 5025533 (1991-06-01), Faas et al.
Calvert John J.
Crowder Clifford D.
Farley Walter C.
Siegfried Peyer AG
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