EP0381844B1 - Method for the transport of a set of at least two yarn bobbins to a twisting machine, and device for carrying out this method - Google Patents
Method for the transport of a set of at least two yarn bobbins to a twisting machine, and device for carrying out this method Download PDFInfo
- Publication number
- EP0381844B1 EP0381844B1 EP89123337A EP89123337A EP0381844B1 EP 0381844 B1 EP0381844 B1 EP 0381844B1 EP 89123337 A EP89123337 A EP 89123337A EP 89123337 A EP89123337 A EP 89123337A EP 0381844 B1 EP0381844 B1 EP 0381844B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bobbin
- transport adapter
- bobbin transport
- yarn
- adapter
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 37
- 230000008569 process Effects 0.000 claims description 24
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/18—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations ; Arrangements to prevent unwinding of roving from roving bobbins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/06—Supplying cores, receptacles, or packages to, or transporting from, winding or depositing stations
- B65H67/064—Supplying or transporting cross-wound packages, also combined with transporting the empty core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/06—Supplying cores, receptacles, or packages to, or transporting from, winding or depositing stations
- B65H67/064—Supplying or transporting cross-wound packages, also combined with transporting the empty core
- B65H67/065—Manipulators with gripping or holding means for transferring the packages from one station to another, e.g. from a conveyor to a creel trolley
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/08—Automatic end-finding and material-interconnecting arrangements
- B65H67/086—Preparing supply packages
- B65H67/088—Prepositioning the yarn end into the interior of the supply package
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/18—Supports for supply packages
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/18—Supports for supply packages
- D01H1/183—Overhead suspension devices
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
- D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the invention relates to a method for transporting a package of bobbins from at least two yarn packages to a twisting machine, with the features from the preamble of claim 1 and a bobbin transport adapter with the features from the preamble of claim 4.
- a method and a device for transporting thread delivery bobbins are known (DE 38 11 667 A1) in which two yarn bobbins are attached to a common hollow bobbin transport adapter which has a gripping head at its upper end for attaching a bobbin gripper. Before the transport, the thread ends of the bobbins are wound in several turns on a part of the outer surface of the bobbin transport adapter.
- a bobbin transport adapter is also known (GB-A-1131699) in which the thread ends of the bobbins are held in place at the upper end of the bobbin transport adapter by an elastic clamping ring.
- the invention has for its object to provide a method for transporting a package of at least two bobbins to a twisting machine of the type mentioned in the preamble of claim 1, in which the thread ends of all bobbins of the package in all stages of transport a defined fixed position take so that on the one hand no thread ends fall off during the transport process and on the other hand at the end of the transport process all thread ends can be automatically detected together and thus a functional presentation of the thread ends for the further work process is possible. Furthermore, it should be prevented that the fixed position of the thread ends disrupts the use of a drain head to be plugged onto the head piece of the bobbin transport adapter.
- Claim 4 describes and claims a coil transport adapter for performing the method according to the invention.
- Claims 5 to 8 describe advantageous developments of the device according to claim 4.
- the basic idea of the method according to the invention is based, in a known manner, on the yarn packages To connect the coil package to one another using a coil transport adapter.
- the bobbin transport adapter is designed such that it is not removed from the package of bobbins after the transport process has ended, but rather connects the bobbins of the package of bobbins to one another even during the processing process.
- This procedure opens up the possibility of arranging the thread ends of all the bobbins of the bobbin package once before the transport process inside the bobbin transport adapter and holding them there until the bobbin package is inserted into the spindle of the twisting machine. In this way, it is possible that regardless of the individual stations of the transport process and the type of transport system used, the thread ends of the yarn packages do not change their defined position together.
- FIGS 1 to 5 serve to illustrate the method according to the invention, a coil adapter known per se being used.
- FIG. 1 shows two single-wound cross-wound bobbins combined to form a package of bobbins, which as a pair of bobbins form the template for a double-wire twisting spindle.
- the two reels 1.1 and 1.2 with their bobbin cores 1.3 and 1.4 are plugged onto a bobbin transport adapter 2, which has a flange 2.2 at its lower end on which the bobbin core 1.4 of the lower bobbin 1.2 is seated.
- the coil transport adapter 2 has a head piece 2.1, which is provided on its outer circumference with a hat 2.11 for attacking a coil gripper described below.
- the head piece 2.1 has on its inside below the upper edge an inward projection 2.12 for attaching the coupling element of a overhead conveyor described below.
- the coil package 1 consisting of the two coils 1.1 and 1.2 is placed together with the coil transport adapter 2 on the hollow mandrel 3.2 of a preparation device 3.
- the hollow mandrel 3.2 is in the base frame 3.1 of the preparation device 3 rotatably supported and driven by a round cord drive 3.3.
- a suction nozzle 3.4 can be attached to its lower end.
- the thread ends F1 and F2 are brushed using a brush 3.5, gripped by a suction device 3.6 and guided over the upper end of the head piece 2.1. Due to the action of the suction nozzle 3.6 attached to the hollow mandrel 3.2 below, the thread ends are then, as shown in FIG. 1, sucked into the interior of the bobbin transport adapter 2, where they remain during the entire transport process described below.
- FIG. 2 shows the removal process of the coil package 1 from the hollow mandrel 3.2 of the preparation device 3 by means of a coil gripper 4.
- the pincer-like gripping device 4.1 of the coil gripper 4 engages in the groove 2.11 on the coil transport adapter 2.
- the coil package 1 is then, as shown in FIG. 3, suspended in a coil hanger 5.2, which is part of an overhead conveyor system 5.
- the coil hanger 5.2 has a coupling element 5.5, which engages the coil transport adapter 2 behind the projection 2.12 in the head piece 2.1.
- the thread ends F1 and F2 running over the upper edge of the head piece 2.1 are additionally clamped by the cone 5.4 which is disordered on the bobbin hanger 5.2.
- the coil hanger 5.2 is guided over rollers 5.3 in a transport rail 5.1 of the transport system 5.
- the coil gripper 4 is Coil transport adapter 2 detached.
- Fig. 4 shows on the one hand a rail part 5.1 of the transport system 5 with the running, already empty, coil hanger 5.2, from which the coil package 1 was removed by means of the coil gripper 4. Furthermore, a second coil package 1 'on a coil hanger 5.2' can be seen hanging.
- the bobbin gripper 4 acting on the head piece 2.1 with its gripping device 4.1, the bobbin 1 removed from the bobbin hanger 5.2 is inserted into a double-wire twist spindle 6.
- the double-wire twisting spindle has a whorl 6.1, a turntable 6.2 with a thread storage disk, a protective pot 6.5 with a bottom 6.4, in which the hollow mandrel 6.3 is arranged axially, onto which the bobbin transport adapter 2 with the bobbin packet 1 is attached.
- An injector through which the thread ends F1 and F2 are sucked into the interior of the spindle, is arranged in the hollow mandrel 6.3 in a manner not specifically shown. After insertion, the coil gripper 4 is detached from the transport adapter 2.
- the transport system 7 has the advantage over a suspended conveyor that it can be inserted into a transport stream on a division basis.
- the transport system also allows very simple switch constructions, so that the transport streams can be diverted very quickly, e.g. B. in repetitions or in waiting positions.
- the coil transport adapter 2 is plugged onto the hollow mandrel 7.2 of a transport plate 7.3.
- the transport plate running on the rail system 7.1 runs into a preparation device 8.
- the preparation device 8 has a device 8.1 by means of which the transport plate 7.3 is raised slightly and thus detaches from the round cord drive 7.4.
- a friction wheel drive 8.3 is placed against the outer surface of the transport plate 7.3, which rotates the transport plate 7.3.
- the thread ends F1 and F2 are grasped by means of a brush 8.5 and a suction device 8.6 and guided over the upper end of the head piece 2.1 of the bobbin transport adapter 2.
- a suction nozzle 8.4 which is rotatably mounted relative to the device 8.1 is attached and by means of the air flow the thread ends F1 and F2, as shown in FIG. 5, are introduced into the interior of the bobbin transport adapter 2, where they are held during the entire transport process are recorded.
- the bobbin packet 1 can then be removed from the transport plate 7.3 and inserted into a double-wire twisting spindle 6, as described with reference to FIG. 4, by means of a bobbin gripper 4.
- bobbin transport adapter it is described below that it may be advantageous to design the bobbin transport adapter so that the thread ends are not inserted into the interior of the bobbin transport adapter via the upper edge of the head piece.
- Such bobbin transport adapters have the advantage that thread drain aids or avivir devices, which have to be plugged onto the head piece of the bobbin transport adapter as an additional adapter head, are not disturbed by the thread ends embedded in the central bore of the bobbin transport adapter. 1 to 5 must be before inserting an additional adapter head, for. B. for better thread entry, the thread ends from the central bore through a handling device, a gripper, can only be removed before you can attach such an adapter head.
- FIG. 6 to 9 show, for explanation of a bobbin transport adapter 12 of the type according to the invention, a bobbin package 1 which is inserted into a double-wire twisting spindle 6 'with whorl 6.1', turntable 6.2 ', bobbin pot 6.5' and pot base 6.4 'with hollow mandrel 6.3' . .
- An injector is arranged in the hollow mandrel 6.3 'in a manner not shown, which can be connected to an external air pressure source 11 in a manner known per se and not specifically shown.
- the coil transport adapter 12 has a flange 12.2 at its lower end and a head piece 12.1 at its upper end.
- the head piece has a groove 12.11 on the outer lateral surface for engaging the gripping device 4.1 of the bobbin gripper 4.
- the head piece has an inwardly projecting projection 12.12 for attaching the coupling element of a overhead conveyor.
- the thread ends F1 and F2 are not introduced into the interior of the tubular bobbin transport adapter via the upper edge of the head piece 12.1, but instead pass through an insertion opening 12.3 in the outer lateral surface of the head piece 12.1 into one, in the circumferential direction in the head piece via one angle of about 270 to which a suction nozzle 9 can be attached o-run thread-receiving channel 12.4, having one end connected to the introduction opening 12.3 and the other end is connected to a second opening 12.5.
- the thread ends F1 and F2 are in this thread take-up channel 12.4 during the entire transport process.
- a discharge head 10 After insertion into the double-wire twisting spindle 6 ', a discharge head 10 is placed on the transport adapter 12, a gripping device 13 takes the thread ends shown in FIG. 7 in a broken line position and leads them to the upper end of the discharge head 10. There they are exhausted by means of the air flow caused by the injector the drain head 10 and the transport adapter 12 are inserted directly into the spindle.
- a bobbin transport adapter 12 'connecting the package 1 the thread ends are sucked through an inlet opening 12.3' and a thread receiving channel 12.4 'into a space between the outer tube of the bobbin transport adapter 12' and an inner sleeve 12.6 '.
- the inner sleeve 12.6 'sits after insertion into the double-wire twisting spindle via an elastic sleeve 12.7' on the hollow mandrel 6.3 'of the double-wire twisting spindle.
- the sleeve 12.7 ' serves to seal the interior of the bobbin transport adapter when the thread in the double-wire twisting spindle is threaded with air. It must be ensured that external air influences do not interfere with the process.
- FIG. 11 and 12 show a further exemplary embodiment of a coil transport adapter 12 verbind connecting the coil package 1.
- the head piece 12.1 ⁇ of the coil transport adapter 12 ⁇ is designed as described.
- the coil transport adapter has 12 ⁇ centering ribs 12.8 ⁇ on its outside.
- a thread receiving channel 12.4 ⁇ is arranged, which has an insertion opening 12.3 ⁇ at its upper end and a suction opening 12.5 ⁇ at its lower end.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Transport eines Spulenpaketes aus mindestens zwei Garnspulen zu einer Zwirnmaschine, mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1 sowie einen Spulentransportadapter mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 4.The invention relates to a method for transporting a package of bobbins from at least two yarn packages to a twisting machine, with the features from the preamble of
Beim Transport von Garnspulen zu garnerzeugenden oder garnverarbeitenden Maschinen muß der Anordnung und Lage der Fadenenden der Garnspulen große Aufmerksamkeit zugewendet werden. Dies ist einerseits für die Weiterbebehandlung der Garnspulen an der nächsten Arbeitsstelle notwendig, aber auch aus Sicherheitsgründen, da abfallende Fadenenden eine Transportautomation unter Umständen stark behindern.When transporting bobbins to yarn-producing or yarn-processing machines, great care must be taken with the arrangement and position of the thread ends of the bobbins. On the one hand, this is necessary for further processing of the bobbins at the next work station, but also for safety reasons, since falling thread ends may greatly hinder transport automation.
Es sind ein Verfahren und eine Vorrichtung zum Transportieren von Fadenlieferspulen bekannt (DE 38 11 667 A1) bei dem zum Transport zwei Garnspulen auf einen gemeinsamen hohlen Spulentransportadapter aufgesteckt werden, der an seinem oberen Ende einen Greifkopf zum Ansetzen eines Spulengreifers aufweist. Vor dem Transport werden die Fadenenden der Garnspulen in mehreren Windungen auf einen Teil der äußeren Oberfläche des Spulentransportadapters aufgewickelt.A method and a device for transporting thread delivery bobbins are known (DE 38 11 667 A1) in which two yarn bobbins are attached to a common hollow bobbin transport adapter which has a gripping head at its upper end for attaching a bobbin gripper. Before the transport, the thread ends of the bobbins are wound in several turns on a part of the outer surface of the bobbin transport adapter.
Es ist weiterhin bekannt beim Transport einzelner Garnspulen, beispielsweise Spinnspulen, das am äußeren Umfang der Spule liegende Fadenende zu suchen und vor dem Transportvorgang im Inneren des Spulenkernes anzuordnen (DE 32 35 442 A1 und DE 37 42 348 A1). Bei Zwirnmaschinen werden jeder Zwirnstelle oft mehrere einfachbewickelte Spulen zugeführt, wobei dann bei jeder einzelnen Spule auf die Lage der Fadenenden geachtet werden muß.It is also known when transporting individual bobbins of thread, for example spinning bobbins, to search for the thread end lying on the outer circumference of the bobbin and to arrange it in the interior of the bobbin core before the transport process (DE 32 35 442 A1 and DE 37 42 348 A1). In the case of twisting machines, several single-wound bobbins are often fed to each twisting point, in which case the position of the thread ends must be taken into account for each individual bobbin.
Es ist auch ein Spulentransportadapter bekannt (GB-A-1131699) bei dem die Fadenenden der Garnspulen am oberen Ende des Spulentransportadapters durch einen elastischen Klemmring festgehalten werden.A bobbin transport adapter is also known (GB-A-1131699) in which the thread ends of the bobbins are held in place at the upper end of the bobbin transport adapter by an elastic clamping ring.
Es ist auch bekannt, mehrere einer Zwirnmaschine zuzuführende Garnspulen zu einem Spulenpaket zuammenzufassen, wobei die Garnspulen mittels einer an sich bekannten Clips-Verbindung miteinander verbunden werden.It is also known to combine a plurality of yarn packages to be fed to a twisting machine to form a package of packages, the yarn packages being connected to one another by means of a clip connection known per se.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Transport eines Spulenpaketes aus mindestens zwei Garnspulen zu einer Zwirnmaschine der eingangs und im Oberbegriff des Patentanspruchs 1 angegebenen Art zu schaffen, bei dem die Fadenenden aller Garnspulen des Spulenpaketes in allen Stadien des Transports eine definierte fixierte Lage einnehmen, damit einerseits während des Transportvorgangs keine Fadenenden abfallen und andererseits am Ende des Transportvorgangs alle Fadenenden gemeinsam automatisch erfaßt werden können und somit eine funktionsgerechte Vorlage der Fadenenden für den weiteren Arbeitsvorgang möglich ist. Weiterhin sollte verhindert werden, daß durch die fixierte Lage der Fadenenden die Anwendung eines auf das Kopfstück des Spulentransportadapters aufzusteckenden Ablaufkopfes gestört wird.The invention has for its object to provide a method for transporting a package of at least two bobbins to a twisting machine of the type mentioned in the preamble of
Weiterhin sollte ein Spulentransportadapter zur Durchführung dieses Verfahrens geschaffen werden.Furthermore, a coil transport adapter should be created to carry out this method.
Die Lösung dieser Aufgabe geschieht erfindungsgemäß mit den Merkmalen aus dem kennzeichnenden Teil des Patentanspruchs 1. Vorteilhafte Weiterbildungen des erfingunsgemäßen Verfahrens sind Gegenstand der Patentansprüche 2 und 3.This object is achieved according to the invention with the features from the characterizing part of
Patentanspruch 4 beschreibt und beansprucht einen Spulentransportadapter zur Durchführung des erfindungsgemäßen Verfahrens. Die Patentansprüche 5 bis 8 beschreiben vorteilhafte Weiterbildungen der Einrichtung nach Patentanspruch 4.
Der Grundgedanke des erfindungsgemäßen Verfahrens geht davon aus, in bekannter Weise die Garnspulen des Spulenpaketes über einen Spulentransportadapter miteinander zu verbinden. Dabei ist der Spulentransportadapter so ausgebildet, daß er nach Beendigung des Transportvorganges nicht aus dem Spulenpaket entfernt wird, sondern die Garnspulen des Spulenpaketes auch während des Verarbeitungsvorganges miteinander verbindet. Diese Vorgehensweise eröffnet die Möglichkeit, die Fadenenden aller Garnspulen des Spulenpaketes einmal vor dem Transportvorgang im Inneren des Spulentransportadapters anzuordnen und sie dort bis zum Einsetzen des Spulenpaketes in die Spindel der Zwirnmaschine festzuhalten. Auf diese Weise ist es möglich, daß unabhängig von den einzelnen Stationen des Transportvorgangs und der Art des verwendeten Transportsystems, die Fadenenden der Garnspulen gemeinsame ihre definierte Lage nicht verändern.The basic idea of the method according to the invention is based, in a known manner, on the yarn packages To connect the coil package to one another using a coil transport adapter. The bobbin transport adapter is designed such that it is not removed from the package of bobbins after the transport process has ended, but rather connects the bobbins of the package of bobbins to one another even during the processing process. This procedure opens up the possibility of arranging the thread ends of all the bobbins of the bobbin package once before the transport process inside the bobbin transport adapter and holding them there until the bobbin package is inserted into the spindle of the twisting machine. In this way, it is possible that regardless of the individual stations of the transport process and the type of transport system used, the thread ends of the yarn packages do not change their defined position together.
Im folgenden werden anhand der beigefügten Zeichnungen Ausführungsformen des erfindungsgemäßen Verfahrens sowie Einrichtungen zur Durchführung des Verfahrens näher erläutert.Embodiments of the method according to the invention and devices for carrying out the method are explained in more detail below with reference to the accompanying drawings.
In den Zeichnungen zeigen:
- Fig. 1
- im Vertikalschnitt ein Spulenpaket aus zwei Garnspulen auf einer Vorbereitungseinrichtung;
- Fig. 2
- in einer perspektivischen Teildarstellung das Spulenpaket nach Fig. 1 nach dem Ansetzen eines Spulengreifers;
- Fig. 3
- in teilweise geschnittener Seitenansicht das Spulenpaket nach Fig. 1 und 2 bei der Übergabe an ein Transportsystem;
- Fig. 4
- in einer perspektivischen Darstellung das Spulenpaket nach Fig. 1 bis 3 nach der Abnahme vom Transportsystem beim Einsetzen in eine Doppeldraht-Zwirnspindel;
- Fig. 5
- in einer perspektivischen teilweise geschnittenen Darstellung ein Spulenpaket in einer in ein anderes Transportsystem integrierten Vorbereitungseinrichtung;
- Fig. 6
- in einer perspektivischen Teildarstellung ein Spulenpaket beim Einsetzen in eine Doppeldraht-Zwirnspindel mit einer erfindungsgemäßen Ausführungsform des Spulentransportadapters;
- Fig. 7
- in teilweise geschnittener Seitenansicht das Spulenpaket nach Fig. 6 nach dem Einsetzen in die Doppeldraht-Zwirnspindel;
- Fig. 8
- in gegenüber Fig. 7 vergrößerter Seitenansicht das Kopfstück des am Spulenpaket nach Fig. 6 und 7 verwendeten Spulentransportadapters;
- Fig. 9
- einen Schnitt nach der Linie VIII in Fig. 8;
- Fig.10
- in teilweise geschnittener Seitenansicht ein mit einem erfindungsgemäßen Spulentransportadapter anderer Bauart verbundenes Spulenpaket;
- Fig.11
- ein mittels eines erfindungsgemäßen Spulentransportadapters einer weiteren Bauart verbundenes Spulenpaket;
- Fig.12
- einen Schnitt nach der Linie XII in Fig. 11.
- Fig. 1
- in vertical section, a package of two yarn packages on a preparation device;
- Fig. 2
- in a partial perspective view of the coil package of Figure 1 after attaching a coil gripper.
- Fig. 3
- in a partially sectioned side view of the coil package according to Figures 1 and 2 when transferring to a transport system.
- Fig. 4
- in a
perspective representation 1 to 3 after removal from the transport system when inserted into a double-wire twisting spindle; - Fig. 5
- a perspective, partially sectioned illustration of a package of coils in a preparation device integrated in another transport system;
- Fig. 6
- a partial perspective view of a bobbin package when inserted into a double-wire twisting spindle with an embodiment of the bobbin transport adapter according to the invention;
- Fig. 7
- in a partially sectioned side view of the package of spools according to FIG. 6 after insertion into the double-wire twisting spindle;
- Fig. 8
- in an enlarged side view compared to FIG. 7, the head piece of the coil transport adapter used on the coil package according to FIGS. 6 and 7;
- Fig. 9
- a section along the line VIII in Fig. 8;
- Fig. 10
- a partially sectioned side view of a coil package connected to a coil transport adapter according to the invention of another type;
- Fig. 11
- a coil package connected by means of a further type of coil transport adapter according to the invention;
- Fig. 12
- a section along the line XII in Fig. 11th
Die Figuren 1 bis 5 dienen zur Darstellung des erfindungsgemäßen Verfahrens, wobei ein an sich bekannter Spulenadapter Anwendung findet.Figures 1 to 5 serve to illustrate the method according to the invention, a coil adapter known per se being used.
Fig. 1 zeigt zwei zu eines Spulenpaket zusammengefaßte einfach bewickelte Kreuzspulen, die als Spulenpaar die Vorlage einer Doppeldraht-Zwirnspindel bilden.1 shows two single-wound cross-wound bobbins combined to form a package of bobbins, which as a pair of bobbins form the template for a double-wire twisting spindle.
Zur Erzeugung des Spulenpaketes sind die beiden Gernspulen 1.1 und 1.2 mit ihren Spulenkernen 1.3 und 1.4 auf einen Spulentransportadapter 2 aufgesteckt, der an seinem unteren Ende einen Flansch 2.2 aufweist auf das der Spulenkern 1.4 der untere Garnspule 1.2 aufsitzt. Am oberen Ende besitzt der Spulentransportadapter 2 ein Kopfstück 2.1, das an seines äußeren Umfang mit einer Hut 2.11 zum Angriff eines weiter unten beschriebenen Spulengreifers versehen ist. Weiterhin besitzt des Kopfstück 2.1 an seiner Innenseite unterhalb des oberen Randes einen nach innen weisenden Vorsprung 2.12 zum Ansetzen des Koppelelementes eines weiter unten beschriebenen Hängeförderers.To produce the package of bobbins, the two reels 1.1 and 1.2 with their bobbin cores 1.3 and 1.4 are plugged onto a
Wie aus Fig. 1 ersichtlich, ist des aus den beiden Spulen 1.1 und 1.2 bestehende Spulenpaket 1 zusammen mit dem Spulentransportadapter 2 auf den Hohldorn 3.2 einer Vorbereitungseinrichtung 3 aufgesetzt. Der Hohldorn 3.2 ist im Grundgestell 3.1 der Vorbereitungseinrichtung 3 drehbar gelagert und über einen Rundschnurantrieb 3.3 antreibbar. An sein unteres Ende ist eine Saugdüse 3.4 ansetzbar. In der Vorbereitungsstation 3 werden die Fadenenden F1 und F2 mittels einer Bürste 3.5 abgebürstet, von einer Saugeinrichtung 3.6 erfaßt und über das obere Ende des Kopfstücks 2.1 geführt. Durch die Wirkung der unten an den Hohldorn 3.2 angesetzten Saugdüse 3.6 werden die Fadenenden dann, wie in Fig. 1 dargestellt, in den Innenraum des Spulentransportadapters 2 eingesaugt, wo sie während des ganzen nachfolgend beschriebenen Transportvorganges verbleiben.As can be seen from FIG. 1, the
In Fig. 2 ist der Abnahmevorgang des Spulenpaketes 1 vom Hohldorn 3.2 der Vorbereitungseinrichtung 3 mittels eines Spulengreifers 4 dargestellt. Dabei greift die zangenartige Greifvorrichtung 4.1 des Spulengreifers 4 in die Nut 2.11 am Spulentransportadapter 2 ein. Gehalten vom Spulengreifer 4 wird das Spulenpaket 1 dann, wie in in Fig. 3 dargestellt, in einen Spulenhänger 5.2 eingehängt, der Teil eines Hängefördersystems 5 ist. Der Spulenhänger 5.2 besitzt an seinem unteren Ende ein Koppelelement 5.5, das hinter den Vorsprung 2.12 im Kopfstück 2.1 das Spulentransportadapters 2 einrastet. Die über den oberen Rand des Kopfstückes 2.1 laufenden Fadenenden F1 und F2 werden durch den am Spulenhänger 5.2 ungeordneten Konus 5.4 zusätzlich so Kopfstück 2.1 festgeklemmt. Der Spulenhänger 5.2 ist über Rollen 5.3 in einer Transportschiene 5.1 des Transportsystems 5 geführt.2 shows the removal process of the
Nach dem Einhängen des Spulenpaketes 1 in den Spulenhänger 5.2 wird der Spulengreifer 4 vom Spulentransportadapter 2 abgelöst.After hanging the
Fig. 4 zeigt einerseits ein Schienenteil 5.1 des Transportsystems 5 mit dem daran laufenden, bereits leeren, Spulenhänger 5.2, von dem das Spulenpaket 1 mittels des Spulengreifers 4 abgenommen wurde. Weiterhin ist ein zweites Spulenpaket 1′ an einem Spulenhänger 5.2′ hängend zu sehen.Fig. 4 shows on the one hand a rail part 5.1 of the
Mittels des mit seiner Greifvorrichtung 4.1 am Kopfstück 2.1 angreifenden Spulengreifers 4, wird das vom Spulenhänger 5.2 abgenommene Spulenpaket 1 in eine DoppeldrahtZwirnspindel 6 eingesetzt.By means of the
In bekannter Weise besitzt die Doppeldraht-Zwirnspindel einen Wirtel 6.1, einen Drehteller 6.2 mit einer Fadenspeicherscheibe, einen Schutztopf 6.5 mit einem Boden 6.4, in dem axial der Hohldorn 6.3 angeordnet ist, auf den der Spulentransportadapter 2 mit dem Spulenpaket 1 aufgesteckt wird. Im Hohldorn 6.3 ist in nicht eigens dargestellter Weise ein Injektor angeordnet, durch den die Fadenenden F1 und F2 in das Innere der Spindel eingesaugt werden. Nach dem Einsetzen wird der Spulengreifer 4 vom Transportadapter 2 abgelöst.In a known manner, the double-wire twisting spindle has a whorl 6.1, a turntable 6.2 with a thread storage disk, a protective pot 6.5 with a bottom 6.4, in which the hollow mandrel 6.3 is arranged axially, onto which the
Anhand von Fig. 5 wird im folgenden dargestellt, wie der Transportvorgang des Spulenpaketes 1 bei einer etwas anderen Ausführungsform eines Transportsystems von einer Vorbereitungsstation durchgeführt wird.5, it is shown below how the transport operation of the
Es handelt sich hier um einen Transportsystem 7 mit Laufschienen 7.1, auf denen mit einem Hohldorn 7.2 auf der Oberseite versehene Transportteller 7.3 geführt sind. Zur Weiterförderung auf den Schienen 7.1 werden die Transportteller 7.3 an ihrer Unterseite mittels eines Rundschnurantriebes 7.4 angetrieben. Das Transportsystem 7 hat gegenüber einem Hängeförderer den Vorteil, daß es teilungsgebunden in einen Transportstrom eingefügt werden kann. Das Transportsystem läßt auch sehr einfache Weichenkonstruktionen zu, so daß die Transportströme sehr schnell umgeleitet werden können, z. B. in Wiederholvorgängen oder in Wartepositionen.This is a
Zum Transport des Spulenpaketes 1 wird der Spulentransportadapter 2 auf den Hohldorn 7.2 eines Transporttellers 7.3 aufgesteckt. Der auf dem Schienensystem 7.1 laufende Transportteller läuft in eine Vorbereitungseinrichtung 8 ein. Die Vorbereitungseinrichtung 8 besitzt eine Vorrichtung 8.1 mittels der der Transportteller 7.3 leicht angehoben wird und sich somit vom Rundschnurantrieb 7.4 löst. Gegen die äußeren Mantelfläche des Transporttellers 7.3 wird ein Reibradantrieb 8.3 angelegt, der den Transportteller 7.3 in Drehung versetzt. Mittels einer Bürste 8.5 und einer Ansaugvorrichtung 8.6 werden die Fadenenden F1 und F2 erfaßt und über das obere Ende des Kopfstückes 2.1 des Spulentransportadapters 2 geführt. An das untere Ende des Hohldorns 7.2 im Transportteller 7.3 wird eine gegenüber der Vorrichtung 8.1 drehbar gelagerte Saugdüse 8.4 angesetzt und mittels des Luftstroms die Fadenenden F1 und F2, wie in Fig. 5 dargestellt, in das Innere des Spulentransportadapters 2 eingeführt, wo sie während des gesamten Transportvorganges festgehalten sind.To transport the
Die Abnahme des Spulenpaketes 1 vom Transportteller 7.3 und das Einsetzen in eine Doppeldraht-Zwirnspindel 6 kann dann, wie anhand von Fig. 4 beschrieben, mittels eines Spulengreifers 4 erfolgen.The
Anhand der Fig. 6 bis 12 wird im folgenden beschrieben, daß es vorteilhaft sein kann, den Spulentransportadapter so auszubilden, daß die Fadenenden nicht über den oberen Rand des Kopfstückes in das Innere des Spulentransportadapters eingeführt werden. Derartige Spulentransportadapter haben den Vorteil, daß Fadenablaufhilfen oder Avivireinrichtungen, die als zusätzlicher Adapterkopf auf das Kopfstück des Spulentransportadapters aufgesteckt werden müssen, durch die in der zentralen Bohrung des Spulentransportadapters einlagernden Fadenenden nicht gestört werden. Bei dem Spulentransportadapter nach Fig. 1 bis 5 müssen vor den Einfügen eines zusätzlichen Adapterkopfes, z. B. für den besseren Fadeneinlauf, die Fadenenden aus der zentralen Bohrung durch eine Handhabungseinrichtung, einen Greifer, erst entnommen werden, bevor man einen derartigen Adapterkopf aufsetzen kann.6 to 12 it is described below that it may be advantageous to design the bobbin transport adapter so that the thread ends are not inserted into the interior of the bobbin transport adapter via the upper edge of the head piece. Such bobbin transport adapters have the advantage that thread drain aids or avivir devices, which have to be plugged onto the head piece of the bobbin transport adapter as an additional adapter head, are not disturbed by the thread ends embedded in the central bore of the bobbin transport adapter. 1 to 5 must be before inserting an additional adapter head, for. B. for better thread entry, the thread ends from the central bore through a handling device, a gripper, can only be removed before you can attach such an adapter head.
Die Fig. 6 bis 9 zeigen zur Erläuterung eines Spulentransportadapters 12 der erfindungsgemäßen Bauart, ein Spulenpaket 1, das in eine Doppeldraht-Zwirnspindel 6' mit Wirtel 6.1', Drehteller 6.2', Spulentopf 6.5' und Topfboden 6.4' mit Hohldorn 6.3' eingegesetzt ist. . Innerhalb des Hohldorns 6.3' ist in nicht dargestellter Weise ein Injektor angeordnet, der in an sich bekannter und nicht eigens dargestellter Weise an eine äußere Luftdruckquelle 11 anschließbar ist.6 to 9 show, for explanation of a
Der Spulentransportadapter 12 besitzt an seinem unteren Ende einen Flansch 12.2 und an seinem oberen Ende ein Kopfstück 12.1. Das Kopfstück besitzt, wie bereits beschrieben, an der äußeren Mantelfläche einen Nut 12.11 zum Angriff der Greifvorrichtung 4.1 des Spulengreifers 4. Weiterhin besitzt das Kopfstück an seiner Innenseite, wie ebenfalls beschrieben, einen nach innen ragenden Vorsprung 12.12 zum Ansetzen des Koppelelementes eines Hängeförderers.The
Die Fadenenden F1 und F2 werden bei dieser Ausführungsform des Spulentransportadapters nicht über den oberen Rand des Kopfstückes 12.1 in den Innenraum des rohrförmigen Spulentransportadapters eingeführt, sondern sie gelangen durch eine Einführungsöffnung 12.3 in der äußeren Mantelfläche des Kopfstücks 12.1 in einen, in Umfangsrichtung im Kopfstück über einen Winkel von ca. 270o geführten Fadenaufnahmekanal 12.4, dessen eines Ende mit der Einführungsöffnung 12.3 und dessen anderes Ende mit einer zweiten Öffnung 12.5 verbunden ist, an die eine Saugdüse 9 ansetzbar ist. Die Fadenenden F1 und F2 befinden sich während des ganzen Transportvorganges in diesem Fadenaufnahmekanal 12.4.In this embodiment of the bobbin transport adapter, the thread ends F1 and F2 are not introduced into the interior of the tubular bobbin transport adapter via the upper edge of the head piece 12.1, but instead pass through an insertion opening 12.3 in the outer lateral surface of the head piece 12.1 into one, in the circumferential direction in the head piece via one angle of about 270 to which a suction nozzle 9 can be attached o-run thread-receiving channel 12.4, having one end connected to the introduction opening 12.3 and the other end is connected to a second opening 12.5. The thread ends F1 and F2 are in this thread take-up channel 12.4 during the entire transport process.
Nach dem Einsetzen in die Doppeldraht-Zwirnspindel 6′ wird auf den Transportadapter 12 ein Ablaufkopf 10 aufgesetzt, eine Greifvorrichtung 13 nimmt die Fig. 7 in gestrichelter Position eingezeichneten Fadenenden auf und führt sie dem oberen Ende des Ablaufkopfes 10 zu. Dort werden sie mittels des durch den Injektor verursachten Luftstroms durch den Ablaufkopf 10 und den Transportadapter 12 hindurch unmittelbar in die Spindel eingeführt. Bei einer weiteren in Fig. 10 dargestellten Ausführungsform, eines das Spulenpaket 1 verbindenden Spulentransportadapters 12′, werden die Fadenenden durch eine Eintrittsöffnung 12.3′ und einen Fadenaufnahmekanal 12.4′ in einen Raum zwischen dem äußeren Rohr des Spulentransportadapters 12′ und einer Innenhülse 12.6′ eingesaugt. Die Innenhülse 12.6′ sitzt nach dem Einsetzen in die Doppeldraht-Zwirnspindel über eine elastische Manschette 12.7′ auf dem Hohldorn 6.3′ der Doppeldraht-Zwirnspindel auf. Die Manschette 12.7′ dient der Abdichtung des Innenraums des Spulentransportadapters, wenn der Faden in der Doppeldraht-Zwirnspindel mit Luft durchgefädelt wird. Dabei muß sichergestellt werden, daß Fremdlufteinflüsse den Vorgang nicht stören.After insertion into the double-wire twisting spindle 6 ', a
Die Fig. 11 und 12 zeigen ein weiteres Ausführungsbeispiel eines des Spulenpaket 1 verbindenden Spulentransportadapters 12 ˝. Das Kopfstück 12.1˝ des Spulentransportadapters 12˝ ist, wie beschrieben, ausgebildet. An seiner Außenseite besitzt der Spulentransportadapter 12˝ Zentrierrippen 12.8˝. In einer der Zentrierrippen ist ein Fadenaufnahmekanal 12.4˝ angeordnet, der an seinem oberen Ende eine Einführungsöffnung 12.3˝ und an seinem unteren Ende eine Ansaugöffnung 12.5˝ besitzt.11 and 12 show a further exemplary embodiment of a
Auch hier ist nach dem Einsetzen des Spulenpakets in die Doppeldraht-Zwirnspindel ein ungestörtes Aufsetzen eines Ablaufkopfes möglich.Here too, an undisturbed attachment of a drain head is possible after inserting the package of coils into the double-wire twisting spindle.
Claims (8)
- Process for transporting a bobbin package of at least two yarn bobbins to a twisting machine, in which the yarn bobbins (1.1, 1.2) are placed together on a hollow bobbin transport adapter (12), which has a gripper head (12.1) at its upper end for mounting a bobbin gripper (4) and/or a transporting device (5.5) of a conveyor system (5), characterized in that the yarn ends (F1, F2) of the yarn bobbins (1.1; 1.2) are inserted through an opening (12.3; 12.3'; 12.3'') located on the outer surface area of the bobbin transport adapter (12'; 12'') into the interior of the bobbin transport adapter (12) and are retained there during the entire transporting process until insertion into a spindle (6) of the twisting machine and after insertion into the spindle (6) a delivery head (10) is mounted on the bobbin transport adapter (12'; 12'') for feeding in the yarns, and the yarn ends (F1, F2) are guided through this delivery head (10) into the hollow axle of the spindle (6).
- Process according to Claim 1, characterized in that, in an initial stage of the process, the bobbin package (1) comprising the two yarn bobbins (1.1, 1.2) is placed together with the bobbin transport adapter (12'; 12'') on a preparatory device (3), in which the yarn ends (F1, F2) are seized and introduced into the bobbin transport adapter, that in a second stage of the process the bobbin package (1) is conveyed by means of a first bobbin gripper (4), acting on the bobbin transport adapter, from the preparatory device (3) to the transporting device (5.5) of a conveyor system (5), and that in a third stage of the process the bobbin package (1) is removed by means of a second bobbin gripper (4) acting on the bobbin transport adapter, from the transporting device (5.5) and placed on the spindle (6) of a twisting machine; after the delivery head (10) has been fitted onto the bobbin transport adapter, the yarn ends (F1, F2) are withdrawn from the bobbin transport adapter and inserted through the delivery head (10) into the spindle (6).
- Process according to Claim 1, characterized in that, in an initial stage of the process, the bobbin package (1) comprising the two yarn bobbins (1.1, 1.2) is fixed together with the bobbin transport adapter (12'; 12'') onto a central hollow shaft (7.2) of a conveyor plate (7.3) running on a rail conveyor system (7) and on the conveyor plate (7.3) runs into a preparatory device (8), in which in a second stage of the process the yarn ends (F1, F2) are seized and guided into the bobbin transport adapter, and that in a third stage of the process the bobbin package (1) is removed from the transporting plate (7.3) by means of a bobbin gripper (4) acting on the bobbin transport adapter and placed on the spindle (6) of a twisting machine, whereupon after the delivery head (10) has been fitted onto the bobbin transport adapter the yarn ends (F1, F2) are withdrawn from the bobbin transport adapter and guided through the delivery head (10) into the hollow axle of the spindle (6).
- Bobbin transport adapter which comprises a section of tubing which is open at both ends and at the lower end in use a mounting flange is provided for the core of a bobbin (1.4) and at its upper end a head section (12.1; 12.1') is provided which has an external circumferential groove (12.11) for the positioning of a tong-type of bobbin gripper (4) for carrying out the process according to one of Claims 1 to 3, characterized in that on the external surface area of the head section (12.1) an opening (12.3; 12.3'; 12.3'') is provided for the insertion of the yarn ends (F1, F2) from yarn bobbins (1.1, 1.2) fixed on the bobbin transport adapter.
- Bobbin transport adapter according to Claim 4, characterized in that in the head section (12.1) an inward-pointing projection (12.12) is provided for attaching a coupling element (5.5) of a suspended conveyor (5.2).
- Bobbin transport adapter according to Claim 4, characterized in that, following on from the opening (12.3), there is a yarn take-up channel (12.4), running in direction of circumference in the wall of the head section (12.1) over a predetermined angle of circumference, which is connected with a further opening (12.5) in the surface area of the bobbin transport adapter for the attachment of a suction nozzle (9).
- Bobbin transport adapter according to Claim 4, characterized in that, following on from the first opening (12.3'), there is a yarn take-up channel (12.4') running downwards in the wall of the head section (12.1') and opening into the inner space of the bobbin transport adapter (12').
- Bobbin transport adapter according to Claim 4, characterized in that, following on from the first opening (12.3''), there is a yarn take-up channel (12.4'') running downwards in longitudinal direction over the entire length of the wall (12.8'') of the bobbin transport adapter (12.''), this channel being connected with a second opening (12.5'') at the lower end of the bobbin transport adapter (12.'') for the fitting of a suction nozzle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3901771A DE3901771A1 (en) | 1989-01-21 | 1989-01-21 | METHOD FOR TRANSPORTING A BOBBIN PACKAGE OF AT LEAST TWO YARN SPOOLS TO A TWISTING MACHINE, AND DEVICE FOR CARRYING OUT THE METHOD |
DE3901771 | 1989-01-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0381844A1 EP0381844A1 (en) | 1990-08-16 |
EP0381844B1 true EP0381844B1 (en) | 1994-06-29 |
Family
ID=6372541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89123337A Expired - Lifetime EP0381844B1 (en) | 1989-01-21 | 1989-12-18 | Method for the transport of a set of at least two yarn bobbins to a twisting machine, and device for carrying out this method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0381844B1 (en) |
JP (1) | JPH02229230A (en) |
DE (2) | DE3901771A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0397929A (en) * | 1989-09-11 | 1991-04-23 | Howa Mach Ltd | Conveying of roving bobbin |
JPH0434273U (en) * | 1990-07-20 | 1992-03-23 | ||
JP2550802B2 (en) * | 1991-06-24 | 1996-11-06 | 村田機械株式会社 | Coupling device for winder and double twister |
EP0533966B1 (en) * | 1991-09-21 | 1995-05-17 | Palitex Project-Company GmbH | Bobbin tube |
US6402078B1 (en) * | 1999-05-28 | 2002-06-11 | Ppg Industries Ohio, Inc. | Automatic winder doffing and re-tubing |
IT1307295B1 (en) * | 1999-12-17 | 2001-10-30 | Arratex Srl | PROCEDURE FOR THE PREPARATION OF WAVES OR THICKNESS. |
WO2006069903A1 (en) | 2004-12-23 | 2006-07-06 | Mann+Hummel Protec Gmbh | Method for drying plastics pellets |
NO328277B1 (en) | 2008-04-21 | 2010-01-18 | Statoil Asa | Gas Compression System |
CN105442116A (en) * | 2015-12-03 | 2016-03-30 | 天津宏大纺织机械有限公司 | Novel block chain for conveying system for roving-spinning units |
EP3771672B1 (en) * | 2019-07-30 | 2024-04-17 | TMT Machinery, Inc. | Adapter and package exchanging device |
JP7489188B2 (en) * | 2019-12-09 | 2024-05-23 | Tmtマシナリー株式会社 | Yarn handling equipment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1131699A (en) * | 1966-06-06 | 1968-10-23 | Palitex Project Co Gmbh | A double twist spindle |
JPS5859167A (en) * | 1981-09-25 | 1983-04-08 | Murata Mach Ltd | Tube thread transport system |
US4848076A (en) * | 1987-01-30 | 1989-07-18 | Murata Kikai Kabushiki Kaisha | Interconnecting system for a winder and a two-for-one twisting machine |
US4848077A (en) * | 1987-04-07 | 1989-07-18 | Murata Kikai Kabushiki Kaisha | Package feeding method and apparatus |
-
1989
- 1989-01-21 DE DE3901771A patent/DE3901771A1/en not_active Withdrawn
- 1989-12-18 DE DE58907984T patent/DE58907984D1/en not_active Expired - Fee Related
- 1989-12-18 EP EP89123337A patent/EP0381844B1/en not_active Expired - Lifetime
-
1990
- 1990-01-19 JP JP2008530A patent/JPH02229230A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH02229230A (en) | 1990-09-12 |
DE58907984D1 (en) | 1994-08-04 |
DE3901771A1 (en) | 1990-08-02 |
EP0381844A1 (en) | 1990-08-16 |
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