EP0780499A2 - Sector cylinder - Google Patents

Sector cylinder Download PDF

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Publication number
EP0780499A2
EP0780499A2 EP96118664A EP96118664A EP0780499A2 EP 0780499 A2 EP0780499 A2 EP 0780499A2 EP 96118664 A EP96118664 A EP 96118664A EP 96118664 A EP96118664 A EP 96118664A EP 0780499 A2 EP0780499 A2 EP 0780499A2
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EP
European Patent Office
Prior art keywords
drum
foreign
fibers
parts
fiber
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96118664A
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German (de)
French (fr)
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EP0780499A3 (en
Inventor
Hubert A. Dipl.-Ing. Dipl.-Wirtsch.-Ing. Hergeth
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Individual
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Publication of EP0780499A3 publication Critical patent/EP0780499A3/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/003—Detection and removal of impurities

Definitions

  • the invention relates to a method for the selective removal of foreign parts in machines in which foreign parts are detected in fiber streams. It is known to use fibers e.g. To continuously inspect cotton in a pipeline or a rectangular duct using lines or matrix cameras and to remove the entire fiber stream for a short time if a contamination is found using a changeover flap. An OPTiSCAN machine for rejecting foreign parts quickly became widespread on the market, partly because in this machine not all of the fiber stream is discharged during detection, but only a partial area with the foreign part.
  • the object of the invention is to provide a method with which foreign parts can be selectively discharged in a fiber air stream. Only a part of the fiber stream is removed.
  • this is done by directing the air flow onto a perforated, rotating roller on which the fibers are deposited and the air flows through.
  • the drum rotates the fibers to a point through which the air flow does not flow, at which, separated over the axial direction of the drum, discharge devices are attached. If foreign parts pass through a discharge device, this is actuated.
  • the triggering process is controlled by a detection device located in the material flow in front of the discharge device.
  • the width of the discharge device corresponds approximately to the detection width.
  • the detection can take place in the air shaft upstream of the sector roller by means of a sensor system. However, the detection can also take place in a shaft between the machine frame of the sector roller and an opening machine or on an opening roller.
  • a control coordinates the results of the detection system with the reject device.
  • the control delays the rejection and assigns rejection elements to the detections. This is necessary because over a detection width of 1.5 m e.g. Over 1000 different positions can be detected and the ejection device is divided into only about 20 ejection segments over a width of 1.5 m.
  • Fig. 1 shows an embodiment in which the detection device and the sector roller are integrated in a machine frame.
  • a rectangular inflow duct 1 guides fibers, air and the rare foreign parts into the machine frame. This can be done under positive or negative pressure.
  • the fibers are deflected and inspected on both sides in a detection shaft using cameras 5).
  • the fibers are illuminated by lighting devices 4).
  • the lighting takes place in a separate shaft.
  • the optimal opening angle for the typical lenses is small. It is therefore necessary that with an inspection width of 1.5 m the light rays travel significantly more than 1 m to the camera. In order not to let the machine frame become too wide, the light rays are therefore deflected by mirrors 6).
  • the flakes are sucked onto the sieve drum 8).
  • the air passes through the screening drum and detaches fibers from the drum at an early stage.
  • the fibers would then be taken over by a new air stream for removal. If the fibers are deposited on the sieve drum, they are rotated by the Screen drum moved around the drum axis 15) in a further area. Flexible sealing lips 9) are attached to the sieve drum, so that the fibers are conveyed in a manner similar to that in a cellular wheel sluice. In order to remove foreign parts, a segment is fixed in a part of the sieve drum in the sieve drum.
  • This segment seals part of the sieve drum against the transport air. As is well known, the seals allow some air to pass through. Similar segments are known from condensers. At one point opposite the segment, the housing surrounding the screening drum is open. The fibers lie without pressure on the sieve drum.
  • solenoid valves Controlled by solenoid valves, individual nozzles or groups of nozzles can eject compressed air.
  • the solenoid valves are supplied with compressed air via a common compressed air supply line 14). If a foreign part reaches the area of the opening 10) on the sieve drum, a solenoid valve 12) is triggered by the control and the foreign part and very few fibers are blown out through the opening.
  • FIG. 2 shows a similar embodiment in which, in contrast to FIG. 1, several flaps 16) are moved around a center of gravity 19).
  • the flaps can close the opening 10) according to FIG. 1 and prevent the fibers from falling off the screening drum.
  • the flap is opened at the appropriate point by the compressed air and the foreign parts are blown out.
  • Fig. 3 shows an embodiment in which the foreign parts on the sieve drum are not blown away, but fall from the drum by gravity.
  • a plurality of flaps 18) are attached across the width of the drum and are each moved by a cylinder 209.
  • the cylinders are controlled by solenoid valves 12).
  • the solenoid valves are supplied with compressed air through a supply line 14).
  • the segment 11) seals between the air area and the discharge area. As a result of this sealing, the fibers and foreign parts are no longer drawn to the drum in the area of the flaps 18). If a foreign part gets into the area of a flap, this is opened, coordinated by the control.
  • the flap pivots about the pivot point 19) and is actuated by the compressed air cylinder 20).
  • the compressed air reaches the solenoid valves 12) through a common supply line 14).
  • a solenoid valve is assigned to each flap. The airflow is diverted through the segment 119 and the fibers are not held on the screen drum by negative pressure in the area of the discharge. If one of the flaps is opened, fibers and foreign parts fall out. Due to the air deflection through the sieve drum, no additional filter capacity is required.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

To give a selective separation of dirt and impurities from a flow of fibres in an air stream, a mesh drum rotates constantly in the flow path after a detection system for foreign matter. The material is deposited on the drum and, through the drum rotation, the fibres are moved to a drum zone where sectors to spin matter off are parallel to the axis. The fibres are spun off at zones controlled by the detection system only where foreign material is detected. The dirt or other impurities are detached from the drum by a blowing or suction action.

Description

Die Erfindung betrifft ein Verfahren zum selektiven Ausschleusen von Fremdteilen bei Maschinen in denen Fremdteile in Faserströmen detektiert werden. Es ist bekannt, Fasern z.B. Baumwolle in einer Rohrleitung oder einem Rechteckkanal mittels Zeilen oder Matrixkameras kontinuierlich zu inspizieren und bei Auffinden einer Verunreinigung mittels einer Umschaltklappe den gesamten Faserstrom kurzzeitig auszuschleusen. Eine Maschine OPTiSCAN zum Aussondern von Fremdteilen hat innerhalb kurzer Zeit große Marktverbreitung gefunden, unter anderem weil in dieser Maschine bei einer Detektion nicht der gesamte Faserstrom ausgeschleust wird, sondern nur ein Teilbereich mit dem Fremdteil.The invention relates to a method for the selective removal of foreign parts in machines in which foreign parts are detected in fiber streams. It is known to use fibers e.g. To continuously inspect cotton in a pipeline or a rectangular duct using lines or matrix cameras and to remove the entire fiber stream for a short time if a contamination is found using a changeover flap. An OPTiSCAN machine for rejecting foreign parts quickly became widespread on the market, partly because in this machine not all of the fiber stream is discharged during detection, but only a partial area with the foreign part.

Aufgabe der Erfindung ist es, ein Verfahren zu schaffen, mit dem man in einem Faserluftstrom Fremdteile selektiv ausschleusen kann. Es wird nur ein Teil des Faserstromes ausgeschleust.The object of the invention is to provide a method with which foreign parts can be selectively discharged in a fiber air stream. Only a part of the fiber stream is removed.

Erfindungsgemäß geschieht dies, indem der Luftstrom auf eine perforierte, rotierende Walze gelenkt wird auf der sich die Fasern ablagern und die Luft hindurchströmt. Die Trommel dreht die Fasern zu einer nicht vom Luftstrom durchströmten Stelle, an der, über die Achsrichtung der Trommel aufgeteilt, Ausschleusevorrichtungen angebracht sind. Passieren Fremdteile eine Ausschleusevorrichtung, wird diese betätigt. Der Auslösevorgang wird gesteuert durch eine im Materialfluss vor der Ausschleusevorrichtung gelegenen Detektionseinrichtung. Die Breite der Ausschleusevorrichtung entspricht in etwa der Detektionsbreite. Die Detektion kann in dem Luftschacht der der Sektorwalze vorgeschaltet ist mittels eines Sensorsystems erfolgen. Die Detektion kann aber auch in einem Schacht zwischen dem Maschinengestell der Sektorwalze und einer Öffnungsmaschine oder an einer Öffnungswalze erfolgen. Eine Steuerung koordiniert die Ergebnisse des Detektionssystems mit der Ausschleusevorrichtung Die Steuerung verzögert die Ausschleusung und ordnet den Detektionen Ausschleusungselemente zu. Dies ist notwendig, da auf einer Detektionsbreite von 1,5 m z.B. über 1000 verschiedene Positionen detektiert werden und die Ausschleusevorrichtung auf 1,5 m Breite in nur etwa 20 Ausschleusesegmente unterteilt ist.According to the invention, this is done by directing the air flow onto a perforated, rotating roller on which the fibers are deposited and the air flows through. The drum rotates the fibers to a point through which the air flow does not flow, at which, separated over the axial direction of the drum, discharge devices are attached. If foreign parts pass through a discharge device, this is actuated. The triggering process is controlled by a detection device located in the material flow in front of the discharge device. The width of the discharge device corresponds approximately to the detection width. The detection can take place in the air shaft upstream of the sector roller by means of a sensor system. However, the detection can also take place in a shaft between the machine frame of the sector roller and an opening machine or on an opening roller. A control coordinates the results of the detection system with the reject device. The control delays the rejection and assigns rejection elements to the detections. This is necessary because over a detection width of 1.5 m e.g. Over 1000 different positions can be detected and the ejection device is divided into only about 20 ejection segments over a width of 1.5 m.

Die Erfindung wird anhand von 3 Figuren in verschiedenen Ausführungsformen beschrieben.The invention is described with reference to 3 figures in various embodiments.

Fig. 1 zeigt eine Ausführung in der die Detektionseinrichtung und die Sektorwalze in einem Maschinengestell integriert sind.Fig. 1 shows an embodiment in which the detection device and the sector roller are integrated in a machine frame.

Durch einen rechteckigen Zustromkanal 1) werden Fasern, Luft und die seltenen Fremdteile in das Maschinengestell geleitet. Dies kann im Über- oder Unterdruck erfolgen. Die Fasern werden umgelenkt und in einem Detektionsschacht beidseitig mittels Kameras 5) inspiziert. An den Inspektionsstellen 7) werden die Fasern durch Beleuchtungseinrichtungen 4) beleuchtet. Die Beleuchtung erfolgt in einem separaten Schacht. Der optimale Öffnungswinkel für die typischen Objektive ist gering. Es ist deshalb notwendig, daß bei einer Inspektionsbreite von 1,5 m die Lichtstrahlen deutlich mehr als 1 m bis zur Kamera zurücklegen. Um das Maschinengestell nicht zu breit werden zu lassen, werden die Lichtstrahlen deshalb durch Spiegel 6) umgelenkt Die Flocken werden auf die Siebtrommel 8) gesaugt. Die Luft passiert durch die Siebtrommel und löst zu einem frühen Zeitpunkt abgelegte Fasern von der Trommel ab. Luft und Fasern verlassen durch einen Luftkanal 16) die Siebtrommel und gelangen in eine Rohrleitung 17). Da die gleiche Luft für Zuführung und Abführung der Fasern Verwendung findet, ist keine zusätzliche Filterkapazität notwendig. Es ist auch denkbar, den Ansaugluftstrom wie bei einem Kondenser durch die Siebtrommel zu saugen und seitlich aus der Trommel zu einem Filter zu einem Filter zu führen.A rectangular inflow duct 1) guides fibers, air and the rare foreign parts into the machine frame. This can be done under positive or negative pressure. The fibers are deflected and inspected on both sides in a detection shaft using cameras 5). At the inspection points 7), the fibers are illuminated by lighting devices 4). The lighting takes place in a separate shaft. The optimal opening angle for the typical lenses is small. It is therefore necessary that with an inspection width of 1.5 m the light rays travel significantly more than 1 m to the camera. In order not to let the machine frame become too wide, the light rays are therefore deflected by mirrors 6). The flakes are sucked onto the sieve drum 8). The air passes through the screening drum and detaches fibers from the drum at an early stage. Air and fibers leave the sieve drum through an air duct 16) and enter a pipeline 17). Since the same air is used for the supply and removal of the fibers, no additional filter capacity is necessary. It is also conceivable to suck the intake air flow through the sieve drum as in a condenser and to guide it laterally out of the drum to a filter to a filter.

Die Fasern würden dann zum Abtransport von einem neuen Luftstrom übernommen. Sind die Fasern auf der Siebtrommel abgelagert, werden sie durch die Rotation der Siebtrommel um die Trommelachse 15) in einen weiteren Bereich bewegt. Auf der Siebtrommel sind flexible Dichtlippen 9) angebracht, sodaß die Fasern ähnlich wie in einer Zellenradschleuse gefördert werden. Um die Fremdteile auszuschleusen ist in der Siebtrommel stationär ein Segment in einem Teil der Siebtrommel angebracht.The fibers would then be taken over by a new air stream for removal. If the fibers are deposited on the sieve drum, they are rotated by the Screen drum moved around the drum axis 15) in a further area. Flexible sealing lips 9) are attached to the sieve drum, so that the fibers are conveyed in a manner similar to that in a cellular wheel sluice. In order to remove foreign parts, a segment is fixed in a part of the sieve drum in the sieve drum.

Dieses Segment dichtet einen Teil der Siebtrommel gegen die Transportluft ab. Die Dichtungen lassen bekanntlich etwas Luft passieren. Ähnliche Segmente sind von Kondensoren bekannt. An einer Stelle gegenüber dem Segment ist das die Siebtrommel umgebene Gehäuse offen. Die Fasern liegen drucklos auf der Siebtrommel auf.This segment seals part of the sieve drum against the transport air. As is well known, the seals allow some air to pass through. Similar segments are known from condensers. At one point opposite the segment, the housing surrounding the screening drum is open. The fibers lie without pressure on the sieve drum.

In dem Segment sind viele Luftdüsen 13) stafettenartig achsparallel angeordnet.In the segment, many air nozzles 13) are arranged axially parallel in the manner of a plate.

Durch Magnetventile gesteuert, können einzelne Düsen oder Düsengruppen Druckluft ausstoßen. Die Magnetventile werden über eine gemeinsame Druckluftversorgungsleitung 14) mit Druckluft versorgt. Gelangt ein Fremdteil auf der Siebtrommel in den Bereich der Öffnung 10), wird durch die Steuerung ausgelöst ein Magnetventii 12) betätigt und das Fremdteil und sehr wenige Fasern durch die Öffnung ausgeblasen.Controlled by solenoid valves, individual nozzles or groups of nozzles can eject compressed air. The solenoid valves are supplied with compressed air via a common compressed air supply line 14). If a foreign part reaches the area of the opening 10) on the sieve drum, a solenoid valve 12) is triggered by the control and the foreign part and very few fibers are blown out through the opening.

Fig. 2 zeigt eine ähnliche Ausführung bei der, im Unterschied zu Fig. 1, mehrere Klappen 16) um einen Schwerpunkt 19) bewegt werden. Die Klappen können die Öffnung 10) nach Fig. 1 verschließen und verhindern, daß die Fasern von der Siebtrommel fallen. Durch die Druckluft wird die Klappe an der entsprechenden Stelle geöffnet und die Fremdteile werden ausgeblasen.FIG. 2 shows a similar embodiment in which, in contrast to FIG. 1, several flaps 16) are moved around a center of gravity 19). The flaps can close the opening 10) according to FIG. 1 and prevent the fibers from falling off the screening drum. The flap is opened at the appropriate point by the compressed air and the foreign parts are blown out.

Fig. 3 zeigt eine Ausführung bei der die Fremdteile an der Siebtrommel nicht weggeblasen werden, sondern durch Schwerkraft von der Trommel fallen. Über die Breite der Trommel sind mehrere Klappen 18) angebracht, die mit je einem Zylinder 209 bewegt werden. Die Zylinder werden durch Magnetventile 12) gesteuert. Die Magnetventile werden durch eine Versorgungsleitung 14) mit Druckluft versorgt. Das Segment 11) dichtet zwischen dem Luftbereich und dem Ausschleusebereich ab. Durch diese Abdichtung werden im Bereich der Klappen 18) die Fasern und Fremdteile nicht mehr an die Trommel gezogen. Gelangt ein Femdteil in den Bereich einer Klappe, wird diese, durch die Steuerung koordiniert, geöffnet. Die Klappe schwenkt um den Drehpunkt 19) und wird durch den Druckluftzylinder 20) betätigt. Die Druckluft gelangt durch eine gemeinsame Versorgungsleitung 14) zu den Magnetventilen 12). Jeder Klappe ist ein Magnetventil zugeordnet. Durch das Segment 119 wird der Luftstrom umgeleitet und im Bereich der Ausschleusung werden die Fasern nicht durch Unterdruck an der Siebtrommel gehalten. Wird eine der Klappen geöffnet, fallen Fasern und Fremdteile heraus. Durch die Luftumlenkung durch die Siebtrommel wird keine zusätzliche Filterkapazität benötigt.Fig. 3 shows an embodiment in which the foreign parts on the sieve drum are not blown away, but fall from the drum by gravity. A plurality of flaps 18) are attached across the width of the drum and are each moved by a cylinder 209. The cylinders are controlled by solenoid valves 12). The solenoid valves are supplied with compressed air through a supply line 14). The segment 11) seals between the air area and the discharge area. As a result of this sealing, the fibers and foreign parts are no longer drawn to the drum in the area of the flaps 18). If a foreign part gets into the area of a flap, this is opened, coordinated by the control. The flap pivots about the pivot point 19) and is actuated by the compressed air cylinder 20). The compressed air reaches the solenoid valves 12) through a common supply line 14). A solenoid valve is assigned to each flap. The airflow is diverted through the segment 119 and the fibers are not held on the screen drum by negative pressure in the area of the discharge. If one of the flaps is opened, fibers and foreign parts fall out. Due to the air deflection through the sieve drum, no additional filter capacity is required.

Durch die geschilderten Verfahren können Fremdteile selektiv über die Breite aus einem Transportluftstrom ausgeschieden werden. Die notwendigen maschinenbaulichen Maßnahmen sind preiswert und zuverlässig.The described processes allow foreign parts to be selectively separated out of a transport air stream across their width. The necessary mechanical engineering measures are inexpensive and reliable.

Claims (9)

Verfahren zum selektiven Ausschleusen von Fremdteilen aus einem Fasertransportluftstrom, dadurch gekennzeichnet, daß, in Fasertransportrichtung gesehen, nach einem Fremdteilerkennungssystem eine permanent rotierende Siebtrommel angeordnet ist, auf der der Faserstrom abgelagert wird und durch die Drehung der Siebtrommel die abgelagerten Fasern in einer Zone an die Siebtrommel gelangen, in der parallel zur Achse Ausschleusesektoren angeordnet sind, die, gesteuert durch das Fremdteilerkennungssystem nur an den korrespondierenden Stellen Fasern ausschleusen, an denen Fremdteile durch das Fremdteilerkennungssystem erkannt worden sind.Method for the selective removal of foreign parts from a fiber transport air stream, characterized in that, viewed in the fiber transport direction, a permanently rotating sieve drum is arranged according to a foreign part detection system, on which the fiber stream is deposited and by the rotation of the sieve drum the deposited fibers in a zone to the sieve drum reach, in which discharge sectors are arranged parallel to the axis, which, controlled by the foreign part detection system, only discharge fibers at the corresponding points at which foreign parts have been recognized by the foreign part detection system. Verfahren nach Anspruch 1) dadurch gekennzeichnet, daß die Transportluft an der Faseransaugstelle in die Siebtrommel hinein gelangt und an einer anderen Stelle wieder durch die Siebtrommel hindurch nach außen gelangt, um dort die abgelagerten Fasern wieder von der Siebtrommel wegzufördern.Method according to claim 1), characterized in that the transport air at the fiber suction point enters the screening drum and at another point again passes through the screening drum to the outside in order to convey the deposited fibers away from the screening drum again. Verfahren nach einem der Ansprüche 1 oder 2) dadurch gekennzeichnet, daß zur Ablagerung der Fasern auf der Trommel und zum Abtransport der Fasern der gleiche Luftstrom verwendet wird.Method according to one of claims 1 or 2), characterized in that the same air flow is used to deposit the fibers on the drum and to remove the fibers. Verfahren nach einem der Ansprüche 1 - 3) dadurch gekennzeichnet, daß stationär ein Bereich der Siebtrommel von der Transportluft durch ein Segment abgetrennt ist und dort Teile des Faserstroms vom Gesamtstrom ausgeschleust werden.Method according to one of claims 1 - 3), characterized in that a stationary area of the sieve drum is separated from the transport air by a segment and parts of the fiber stream are discharged from the total stream there. Verfahren nach einem der Ansprüche 1 - 4) dadurch gekennzeichnet, daß die Fremdteile durch Druckluft von der Siebtrommel geblasen werden.Method according to one of claims 1-4), characterized in that the foreign parts are blown from the sieve drum by compressed air. Verfahren nach einem der Ansprüche 1 - 5) dadurch gekennzeichnet, daß die Fremdteile durch das Öffnen einzelner Klappen am Umfang der Siebtrommel aus dem Faserstrom gelangen.Method according to one of claims 1-5), characterized in that the foreign parts come out of the fiber stream by opening individual flaps on the circumference of the sieve drum. Verfahren nach einem der Ansprüche 1 - 6) dadurch gekennzeichnet, daß die Fremdteile durch Unterdruck von der Siebtrommel weggesaugt werden.Method according to one of claims 1-6), characterized in that the foreign parts are sucked away from the screen drum by negative pressure. Verfahren nach einem der Ansprüche 1 - 7) dadurch gekennzeichnet, daß die Ablösung der Fremdteile von der Siebtrommel auf Grund von Informationen einer Fremdteildetektionseinrichtung, die im Materialfluß vor der Siebtrommel angeordnet ist, ausgelöst wird.Method according to one of Claims 1-7), characterized in that the detachment of the foreign parts from the screening drum is triggered on the basis of information from a foreign part detection device which is arranged in the material flow in front of the screening drum. Verfahren nach einem der Ansprüche 1 - 8), dadurch gekennzeichnet, daß die Entfernung der Fremdteile von der Siebtrommel nur in einzelnen Teilbereichen entlang der Achse der Siebtrommel erfolgt.Method according to one of claims 1-8), characterized in that the removal of the foreign parts from the screening drum takes place only in individual partial areas along the axis of the screening drum.
EP96118664A 1995-12-20 1996-11-21 Sector cylinder Withdrawn EP0780499A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19547819 1995-12-20
DE1995147819 DE19547819A1 (en) 1995-12-20 1995-12-20 Sector roller

Publications (2)

Publication Number Publication Date
EP0780499A2 true EP0780499A2 (en) 1997-06-25
EP0780499A3 EP0780499A3 (en) 1997-12-03

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EP96118664A Withdrawn EP0780499A3 (en) 1995-12-20 1996-11-21 Sector cylinder

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EP (1) EP0780499A3 (en)
JP (1) JPH09176909A (en)
DE (1) DE19547819A1 (en)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
EP0879905A1 (en) * 1997-05-20 1998-11-25 Jossi Holding AG Method and apparatus for the detection and removal of foreign substances in fibre material
WO1999001596A1 (en) * 1997-06-30 1999-01-14 Zellweger Luwa Ag Air curtain nep separation and detection
FR2769326A1 (en) * 1997-10-03 1999-04-09 Hubert A Hergeth PROCESS FOR THE AUTOMATIC REMOVAL OF FOREIGN ELEMENTS THAT ADHER TO OPENING CYLINDERS
CN101760810B (en) * 2009-07-28 2011-07-20 石河子大学 Seed cotton foreign fiber separating and opening machine
CN105239219A (en) * 2015-10-29 2016-01-13 河北宇腾羊绒制品有限公司 Cashmere acquisition receiving device

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Publication number Priority date Publication date Assignee Title
IT1306941B1 (en) 1998-02-19 2001-10-11 Truetzschler & Co DEVICE IN SPINNING PREPARATION, FOR THE SEPARATION OF FOREIGN BODIES ON A RAPID ROTATION CYLINDER FOR THE OPENING OF
CN105862138B (en) * 2016-04-28 2019-12-03 聊城大学 Flower feeding equipment with seed-cotton foreign-fibers cleaning and impurity removal function

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CH619991A5 (en) * 1977-06-09 1980-10-31 Rieter Ag Maschf
DE3231944A1 (en) * 1982-08-27 1984-03-01 Luwa Gmbh, 6000 Frankfurt Fibre separator
JPS63235529A (en) * 1987-03-19 1988-09-30 Nippon Mengiyou Gijutsu Keizai Kenkyusho Cotton opener
CH665430A5 (en) * 1987-10-09 1988-05-13 H J Scheinhuette Entwicklungen SEPARATION METHOD AND DEVICE FOR CARRYING OUT THE SAME.
US5383135A (en) * 1992-12-31 1995-01-17 Zellweger Uster, Inc. Acquisition, measurement and control of thin webs on in-process textile materials
DE4340173A1 (en) * 1993-11-25 1995-06-01 Hergeth Hubert A Detecting and removing alien bodies

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0879905A1 (en) * 1997-05-20 1998-11-25 Jossi Holding AG Method and apparatus for the detection and removal of foreign substances in fibre material
WO1999001596A1 (en) * 1997-06-30 1999-01-14 Zellweger Luwa Ag Air curtain nep separation and detection
AU734283B2 (en) * 1997-06-30 2001-06-07 Zellweger Luwa Ag Air curtain nep separation and detection
FR2769326A1 (en) * 1997-10-03 1999-04-09 Hubert A Hergeth PROCESS FOR THE AUTOMATIC REMOVAL OF FOREIGN ELEMENTS THAT ADHER TO OPENING CYLINDERS
CN101760810B (en) * 2009-07-28 2011-07-20 石河子大学 Seed cotton foreign fiber separating and opening machine
CN105239219A (en) * 2015-10-29 2016-01-13 河北宇腾羊绒制品有限公司 Cashmere acquisition receiving device

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Publication number Publication date
JPH09176909A (en) 1997-07-08
EP0780499A3 (en) 1997-12-03
DE19547819A1 (en) 1997-06-26

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