EP0794279B1 - Method and device for feeding pieces of clothes to a processing apparatus - Google Patents

Method and device for feeding pieces of clothes to a processing apparatus Download PDF

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Publication number
EP0794279B1
EP0794279B1 EP97103439A EP97103439A EP0794279B1 EP 0794279 B1 EP0794279 B1 EP 0794279B1 EP 97103439 A EP97103439 A EP 97103439A EP 97103439 A EP97103439 A EP 97103439A EP 0794279 B1 EP0794279 B1 EP 0794279B1
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EP
European Patent Office
Prior art keywords
clamps
linen
piece
clamp
pair
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EP97103439A
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German (de)
French (fr)
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EP0794279A1 (en
Inventor
Martin Rauch
Jörn Munch Jensen
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Jensen AG Burgdorf
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Jensen AG Burgdorf
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F67/00Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00
    • D06F67/04Arrangements for feeding or spreading the linen

Definitions

  • the invention relates to a method for feeding Laundry items to a processing device according to the Preamble of claim 1 and a feed device according to the preamble of claim 10.
  • Method and Feeders of the type mentioned are used to spread laundry and in this form of a lack, Folding machine or the like to be fed for processing.
  • a feeding device is known (JENSEN JENFEED CENTRAFIN), which is between a single-lane mode of operation for large items of laundry and a multi-lane for those simultaneous processing of two smaller items of laundry is switchable.
  • the Items of laundry are pre-sorted, since only one can be set by two procedures in which the brackets the laundry item with respect to the whole Center web width or with respect to one web half and the same is then placed on a feed conveyor becomes.
  • DE-A-33 20 404 known device which by adjustable stops Entire orbit mediation and mediation is adjustable with respect to a partial web.
  • the object of the invention is to provide a method for which the clamp movements are controlled so that each item of laundry according to its width and the existing one Place is placed in such a way that there is no overlap arise and a high throughput is achieved. Furthermore a feed device should be specified, which it with simple means allowed the width of a piece of laundry in the state in which it is on the feed conveyor is determined to determine quickly and safely without the same with a taut, stretched front edge should be put on.
  • the invention provides a method with which without Pre-sorting laundry items of different sizes and High throughput alignment one Processing device can be supplied.
  • the Operation is still very simple and does not require any special attention.
  • the required determination of the width of a piece of laundry is in the feed device according to the invention simple, inexpensive means and without any disability of the spread of the laundry item reached.
  • the on the The leading edge of the same forces are good controllable and the laundry does not become a big one exposed to mechanical loads.
  • the feed device has (FIG. 1 a) a feed conveyor 1 on with a first belt conveyor 3, which is a row juxtaposed perforated conveyor belts that over Rolls 2a-d are guided, as well as one nearby its front edge arranged vacuum chamber 4, which is connected to a suction line, not shown, and at the top, over which the conveyor belts are guided, is open. In the vacuum chamber 4 there are also two upward z.
  • B. optical sensors for Monitoring the occupancy of the feed conveyor 1 with Items of laundry side by side along a monitoring line arranged, each approximately in the middle of a web half (not shown). Includes the first belt conveyor 3 second belt conveyor 5 with two rollers 6a, b guided lower belts 7 and three rollers 8a-c guided top bands 9. Below the first Belt conveyor 3 is arranged with a suction device 10 one below the front edge of the same Suction slot 11.
  • a spreading device 12 In front of the feed conveyor 1 is parallel to the front edge of the first belt conveyor 3 a spreading device 12 (see Fig. 2a, b, cover and other parts are omitted) arranged with (Fig. 2b) two pairs 13a, b of pneumatic actuated along a traverse path to Transportable clamps, one inside each first bracket 14 and an outer second bracket 14 '(in Fig. 2a omitted).
  • the left pair of brackets 13a is over a belt 15a driven by an electric motor 16a, via the drive wheel 17 of the toothed belt 15a as an enveloping member is led. It also runs via an encoder 18a, which thus the position of the first bracket 14 of the left pair of brackets 13a monitors which with the Timing belt 15a is firmly connected.
  • One as an inductive one Proximity switch designed position sensor 19a monitors whether the second bracket 14 'in the Home position is or not. Slightly shifted inwards - preferably by no more than 50 cm - is a similar synchronization sensor 20a arranged, which the passage of the second bracket 14 'registered.
  • the drive of the right pair of brackets 13b is with a Toothed belt 15b, an electric motor 16b, a rotary encoder 18b, a position sensor 19b and a synchronization sensor 20b constructed the same.
  • FIG. 1a, b Behind the spreading device 12 is (Fig. 1a, b) itself extending over the entire width of the feed conveyor 1
  • Support bar 21 is provided, which as a suction bar is formed with a perforated on the top, over a switchable valve connected to a suction line Vacuum chamber 22 (Fig. 1b).
  • the support bar 21 is in the middle divided in half, but the can be coupled together.
  • the support bar 21 as a whole or each of its halves is in the conveying direction between one in Fig. 1a shown front recording position and one of Fig. 1b apparent rear lay position, in which they behind the vacuum chamber 4 of the first belt conveyor 3 lies, movable. At the same time, it is by means of a Pneumatic cylinder 23 limited around a horizontal axis swiveling.
  • Fig. 3a, b in which the second bracket 14 'of the pair of left clips 13a is shown, can be seen, the same comprises one via a connection 24 pneumatically actuated upper jaws 25 and one fixed lower counter jaws 26, which on a Carriages 27 are suspended.
  • the carriage 27 applies a base plate 28 an upper pair of rollers 29a, b (the rear the base plate 28 parts are in Fig. 2b shown in solid lines) and a lower pair of rollers 30a, b, which extends across the entire width of the spreader 12 extending rail 31 (Fig. 3b) from above or from below touch and roll on it.
  • Fig. 3b are on the base plate 28 attached on both sides stops 32 (Fig. 3a) and at the top Edge a contact angle 33 on which the position sensor 19a and the synchronization sensor 20a (Fig. 2b) respond.
  • the first bracket 14 and the second bracket 14 ' are in constructed essentially the same. However, while the first Clamp 14 firmly with the toothed belt 15a, with his upper section, is connected, the second bracket 14 ' can be coupled to the same.
  • the base plate 28 bears as Coupling device to a first pneumatic cylinder 34 whose piston a clamping part is attached, which with a Counterholder 35 cooperates by the timing belt 15a the clamping part is clamped against the counter-holder 35.
  • a another, with a pneumatic cylinder 36 and a Counterholder 37 coupling device of the same design can used to attach the second bracket 14 'to the lower one To couple section of the toothed belt 15a. This allows the two brackets 14, 14 ', if necessary, also in opposite directions be moved.
  • a piece of laundry is manually the clips 14, 14 'about the left pair of brackets 13a fed and detected by in the Brackets 14, 14 'corners, which is a leading edge of the Limit laundry items, imported and from the same are automatically clamped. Then it is checked whether the left of the two in the vacuum chamber 4 arranged sensors occupancy of the left half of the web notes. If this is the case, the first bracket 14 remains in the starting position. Once the sensor detects that If there is no occupancy, the electric motor 16a starts set and moves the first bracket 14 quickly to the right. If the right sensor shows the occupancy of the right half of the web, the first bracket is at most up to the limit of Travel on the left half of the path.
  • the first bracket 14 reaches the limit of the left Half of the web without addressing the position sensor 19a would have or results in the determination of the width of the Laundry that the same across the width of the left Half of the web goes out, so the first bracket 14 or If necessary, pair of clips 13a stopped until the right one Sensor no longer detects occupancy. Then it will Piece of laundry centered on the entire web and on placed the first belt conveyor 3. Is the right one Half of the web is not occupied from the start, so can the first bracket 14 from the outset over the boundary of the left Move halfway out and the laundry item all over the web and put on.
  • the rear part of the laundry is at the suction slot 11 sucked in by the suction device 10.
  • a processing device e.g. B. a defect or fed to a folding machine while the support bar 21 is quickly moved back to its receiving position.
  • the number of overlapping in length side by side items of laundry put on are in principle only by the Resolution according to the width with which the first Belt conveyor 3 is monitored, limited. This can be done by the arrangement of a larger number of sensors along the Monitoring line can be enlarged or by that about at a distance between adjacent sensors, the just below the minimum expected width of Laundry items, the positions of the brackets Placing the item of laundry for more precise positioning be used and the sensors only for monitoring serve in terms of length.
  • the items of laundry can also each, for example with regard to the following processing, only on certain partial webs or Summaries of neighboring partial webs launched or positioned with respect to the same, e.g. B. be averaged.
  • Such a device for determining the width of the Items of laundry can also be made using known methods are used in which, for example, only one submission of the laundry items with respect to the entire web is carried out.
  • the retention force with which the second Bracket is held in the starting position, z. B. adjusted according to the type of laundry or possibly additionally, can be controlled according to their width.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Sewing Machines And Sewing (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Zuführen von Wäschestücken zu einem Bearbeitungsgerät gemäss dem Oberbegriff des Anspruchs 1 sowie eine Zuführvorrichtung gemäss dem Oberbegriff des Anspruchs 10. Verfahren und Zuführvorrichtungen der angesprochenen Art werden benutzt, um Wäschestücke zu spreizen und in dieser Form einer Mangel, Faltmaschine o. dgl. zur Bearbeitung zuzuleiten.The invention relates to a method for feeding Laundry items to a processing device according to the Preamble of claim 1 and a feed device according to the preamble of claim 10. Method and Feeders of the type mentioned are used to spread laundry and in this form of a lack, Folding machine or the like to be fed for processing.

Es ist eine Zuführvorrichtung bekannt (JENSEN JENFEED CENTRAFIN), welche zwischen einer einbahnigen Arbeitsweise für grosse Wäschestücke und einer mehrbahnigen für die gleichzeitige Bearbeitung von zwei kleineren Wäschestücken umschaltbar ist. Für die Eingabe mittels Klammern müssen die Wäschestücke jedoch vorsortiert werden, da jeweils nur eine von zwei Verfahrensweisen eingestellt werden kann, bei der die Klammern das Wäschestück bezüglich der gesamten Bahnbreite bzw. bezüglich einer Bahnhälfte zentrieren und dasselbe anschliessend auf einen Zuführförderer aufgelegt wird. Das Gleiche gilt für die aus der DE-A-33 20 404 bekannte Vorrichtung, welche durch umstellbare Anschläge auf Einmittung bezüglich der gesamten Bahn und Einmittung bezüglich einer Teilbahn einstellbar ist.A feeding device is known (JENSEN JENFEED CENTRAFIN), which is between a single-lane mode of operation for large items of laundry and a multi-lane for those simultaneous processing of two smaller items of laundry is switchable. For the input with brackets the Items of laundry, however, are pre-sorted, since only one can be set by two procedures in which the brackets the laundry item with respect to the whole Center web width or with respect to one web half and the same is then placed on a feed conveyor becomes. The same applies to those from DE-A-33 20 404 known device, which by adjustable stops Entire orbit mediation and mediation is adjustable with respect to a partial web.

Es ist auch bekannt, Zuführvorrichtungen etwa im Hinblick auf die Zentrierung des jeweiligen Wäschestücks so auszubilden, dass dessen Breite bestimmt werden kann. So zeigt DE-A-42 02 380 einen unterhalb der äusseren Klammer eines Klammerpaares angeordneten Hebel, unter welchem die Vorderkante des Wäschestückes durchgezogen wird, so dass er bei Straffung derselben angehoben und eine Berechnung der Breite des Wäschestücks, d. h. der Länge seiner Vorderkante aus der Position des Hebels und der Position der inneren Klammer nach dem pythagoreischen Lehrsatz ausgelöst wird. Die erforderlichen Vorrichtungen komplizieren jedoch die Zuführvorrichtung beträchtlich und erschweren auch das Spreizen des Wäschestücks. Die erforderliche Berechnung erfordert eine spezielle Ausrüstung und kann unerwünschte Verzögerungen verursachen.It is also known to consider feeders approximately on the centering of the respective laundry train that its width can be determined. So DE-A-42 02 380 shows one below the outer bracket a pair of brackets arranged lever, under which the Leading edge of the laundry is pulled through so that it raised when tightening the same and a calculation of the Width of the laundry item, d. H. the length of its leading edge from the position of the lever and the position of the inner Bracket after the Pythagorean theorem is triggered. However, the devices required complicate the process Feeder considerably and also complicate that Spreading the laundry. The required calculation requires special equipment and can be undesirable Cause delays.

Aus der US-A-4 106 227 ist es bei einer Zuführvorrichtung mit drei Klammerpaaren bekannt, das Ende jedes Wäschestücks, das jeweils zentriert und automatisch auf einen Zuführförderer aufgelegt wird, mittels Sensoren festzustellen, worauf das nächste Wäschestück auf den Zuführförderer aufgelegt wird.From US-A-4 106 227 it is in a feeder known with three pairs of clips, the end of each item of laundry, centered and automatically on one Feed conveyor is placed by means of sensors determine what the next item of laundry on the Feed conveyor is placed.

Eine verhältnismässig einfache Bestimmung der Breite des Wäschestücks ist aus der EP-A-0 053 562 bekannt. Bei dieser gattungsgemässen Vorrichtung mit zwei in der Grundstellung seitlich angeordneten Klammerpaaren wird jeweils die Position der inneren Klammer überwacht, während die äussere Klammer mittels eines Schalters daraufhin überprüft wird, ob sie sich in der Grundstellung befindet. Ist das Wäschestück durch die Bewegung der inneren Klammer gespreizt, wird die äussere Klammer aus der Grundstellung gezogen. Aus der Position der inneren Klammer zu diesem Zeitpunkt wird die Breite des Wäschestücks bestimmt. Diese Vorgehensweise hat den Nachteil, dass im Moment, in welchem die Bewegung der äusseren Klammer einsetzt, die Vorderkante des Wäschestücks sehr straff gespannt und meist etwas gedehnt ist. Wird die äussere Klammer gleich parallel zur inneren Klammer mitbewegt, wie dies bei der gattungsgemässen Vorrichtung der Fall ist, so wird das Wäschestück in diesem Zustand aufgelegt und weiterbearbeitet, wodurch es mechanisch stark belastet wird. Würde dagegen die Dehnung rückgängig gemacht, so würde dadurch die Messung der Breite verfälscht. A relatively simple determination of the width of the Laundry items are known from EP-A-0 053 562. At this Generic device with two in the basic position laterally arranged pairs of clamps is the Position of the inner bracket monitored while the outer Clamp is checked by means of a switch whether it is in the basic position. Is the laundry spread by the movement of the inner bracket, the outer bracket pulled out of the basic position. From the Position of the inner bracket at this time is the Width of the laundry item determined. This approach has the disadvantage that at the moment when the movement of the outer clip inserts, the front edge of the laundry is very taut and usually a little stretched. Will the outer bracket parallel to the inner bracket moved, as is the case with the generic device If so, the item of laundry will be in this state applied and further processed, which makes it mechanically strong is charged. If, on the other hand, the stretch was reversed, this would falsify the measurement of the width.

Aufgabe der Erfindung ist es, ein Verfahren anzugeben, bei welchem die Klammerbewegungen so gesteuert werden, dass jedes Wäschestück gemäss seiner Breite und dem vorhandenen Platz derart abgelegt wird, dass keine Ueberlappungen entstehen und ein hoher Durchsatz erzielt wird. Ausserdem soll eine Zuführvorrichtung angegeben werden, welche es mit einfachen Mitteln erlaubt, die Breite eines Wäschestücks in demjenigen Zustand, in dem es auf den Zuführförderer aufgelegt wird, rasch und sicher zu bestimmen, ohne dass dasselbe mit straff gespannter, gedehnter Vorderkante aufgelegt werden müsste.The object of the invention is to provide a method for which the clamp movements are controlled so that each item of laundry according to its width and the existing one Place is placed in such a way that there is no overlap arise and a high throughput is achieved. Furthermore a feed device should be specified, which it with simple means allowed the width of a piece of laundry in the state in which it is on the feed conveyor is determined to determine quickly and safely without the same with a taut, stretched front edge should be put on.

Diese Aufgabe wird durch die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, gelöst.This object is achieved by the invention as set forth in the Claims is resolved.

Die Erfindung schafft ein Verfahren, mit welchem ohne Vorsortierung Wäschestücke unterschiedlicher Grösse und Ausrichtung mit hohem Durchsatz einer Bearbeitungsvorrichtung zugeführt werden können. Die Bedienung ist trotzdem sehr einfach und erfordert keine besondere Aufmerksamkeit.The invention provides a method with which without Pre-sorting laundry items of different sizes and High throughput alignment one Processing device can be supplied. The Operation is still very simple and does not require any special attention.

Die erforderliche Bestimmung der Breite eines Wäschestücks wird bei der erfindungsgemässen Zuführvorrichtung mit einfachen, kostengünstigen Mitteln und ohne jede Behinderung des Spreizens des Wäschestücks erreicht. Die auf die Vorderkante desselben einwirkenden Kräfte sind dabei gut kontrollierbar und das Wäschestück wird keinen grossen mechanischen Belastungen ausgesetzt.The required determination of the width of a piece of laundry is in the feed device according to the invention simple, inexpensive means and without any disability of the spread of the laundry item reached. The on the The leading edge of the same forces are good controllable and the laundry does not become a big one exposed to mechanical loads.

Im folgenden wird die Erfindung anhand von Figuren, welche lediglich ein Ausführungsbeispiel darstellen, näher erläutert. Es zeigen

Fig. 1a
eine schematische Seitenansicht der erfindungsgemässen Zuführvorrichtung während einer ersten Phase des erfindungsgemässen Verfahrens,
Fig. 1b
eine Seitenansicht entsprechend Fig. 1a während einer zweiten Phase des erfindungsgemässen Verfahrens,
Fig. 2a
einen Draufblick auf die Spreizvorrichtung der erfindungsgemässen Zuführvorrichtung,
Fig. 2b
eine Vorderansicht der Spreizvorrichtung gemäss Fig. 2a,
Fig. 3a
eine Vorderansicht einer Klammer der Spreizvorrichtung gemäss Fig. 2a,b und
Fig. 3b
eine Seitenansicht der Klammer gemäss Fig. 3a.
In the following, the invention is explained in more detail with reference to figures, which only represent an exemplary embodiment. Show it
Fig. 1a
2 shows a schematic side view of the feed device according to the invention during a first phase of the method according to the invention,
Fig. 1b
1 a during a second phase of the method according to the invention,
Fig. 2a
a top view of the spreading device of the feed device according to the invention,
Fig. 2b
3 shows a front view of the spreading device according to FIG. 2a,
Fig. 3a
a front view of a bracket of the expanding device according to Fig. 2a, b and
Fig. 3b
a side view of the clip according to Fig. 3a.

Die Zuführvorrichtung weist (Fig. 1a) einen Zuführförderer 1 auf mit einem ersten Bandförderer 3, welcher eine Reihe nebeneinander angeordneter gelochter Förderbänder, die über Rollen 2a-d geführt sind, umfasst sowie eine in der Nähe seiner Vorderkante angeordnete Unterdruckkammer 4, welche mit einer nicht dargestellten Saugleitung verbunden ist und an der Oberseite, über welche die Förderbänder geführt sind, offen ist. In der Unterdruckkammer 4 sind ausserdem zwei nach oben gerichtete z. B. optische Sensoren zur Ueberwachung der Belegung des Zuführförderers 1 mit Wäschestücken längs einer Ueberwachungslinie nebeneinander angeordnet, jeder etwa in der Mitte einer Bahnhälfte (nicht dargestellt). An den ersten Bandförderer 3 schliesst ein zweiter Bandförderer 5 an mit über zwei Rollen 6a,b geführten unteren Bändern 7 und über drei Rollen 8a-c geführten oberen Bändern 9. Unterhalb des ersten Bandförderers 3 ist eine Saugvorrichtung 10 angeordnet mit einem unterhalb der Vorderkante desselben liegenden Saugschlitz 11. The feed device has (FIG. 1 a) a feed conveyor 1 on with a first belt conveyor 3, which is a row juxtaposed perforated conveyor belts that over Rolls 2a-d are guided, as well as one nearby its front edge arranged vacuum chamber 4, which is connected to a suction line, not shown, and at the top, over which the conveyor belts are guided, is open. In the vacuum chamber 4 there are also two upward z. B. optical sensors for Monitoring the occupancy of the feed conveyor 1 with Items of laundry side by side along a monitoring line arranged, each approximately in the middle of a web half (not shown). Includes the first belt conveyor 3 second belt conveyor 5 with two rollers 6a, b guided lower belts 7 and three rollers 8a-c guided top bands 9. Below the first Belt conveyor 3 is arranged with a suction device 10 one below the front edge of the same Suction slot 11.

Vor dem Zuführförderer 1 ist parallel zur Vorderkante des ersten Bandförderers 3 eine Spreizvorrichtung 12 (s. Fig. 2a,b, Abdeckungs- und andere Teile sind weggelassen) angeordnet mit (Fig. 2b) zwei Paaren 13a,b von pneumatisch betätigten längs einer Verfahrstrecke quer zur Förderrichtung verfahrbaren Klammern, jeweils einer inneren ersten Klammer 14 und einer äusseren zweiten Klammer 14' (in Fig. 2a weggelassen). Das linke Klammerpaar 13a wird über einen Riemen 15a von einem Elektromotor 16a angetrieben, über dessen Treibrad 17 der Zahnriemen 15a als Hüllglied geführt ist. Er läuft ausserdem über einen Drehgeber 18a, welcher auf diese Weise die Position der ersten Klammer 14 des linken Klammerpaares 13a überwacht, welche mit dem Zahnriemen 15a fest verbunden ist. Ein als induktiver Näherungsschalter ausgeführter Positionssensor 19a überwacht, ob sich die zweite Klammer 14' in der Grundstellung befindet oder nicht. Etwas nach innen versetzt - vorzugsweise um nicht mehr als 50 cm - ist ein gleichartiger Synchronisationssensor 20a angeordnet, welcher den Durchgang der zweiten Klammer 14' registriert.In front of the feed conveyor 1 is parallel to the front edge of the first belt conveyor 3 a spreading device 12 (see Fig. 2a, b, cover and other parts are omitted) arranged with (Fig. 2b) two pairs 13a, b of pneumatic actuated along a traverse path to Transportable clamps, one inside each first bracket 14 and an outer second bracket 14 '(in Fig. 2a omitted). The left pair of brackets 13a is over a belt 15a driven by an electric motor 16a, via the drive wheel 17 of the toothed belt 15a as an enveloping member is led. It also runs via an encoder 18a, which thus the position of the first bracket 14 of the left pair of brackets 13a monitors which with the Timing belt 15a is firmly connected. One as an inductive one Proximity switch designed position sensor 19a monitors whether the second bracket 14 'in the Home position is or not. Slightly shifted inwards - preferably by no more than 50 cm - is a similar synchronization sensor 20a arranged, which the passage of the second bracket 14 'registered.

Der Antrieb des rechten Klammerpaares 13b ist mit einem Zahnriemen 15b, einem Elektromotor 16b, einem Drehgeber 18b, einem Positionssensor 19b und einem Synchronisationssensor 20b gleich aufgebaut.The drive of the right pair of brackets 13b is with a Toothed belt 15b, an electric motor 16b, a rotary encoder 18b, a position sensor 19b and a synchronization sensor 20b constructed the same.

Hinter der Spreizvorrichtung 12 ist (Fig. 1a,b) eine sich über die ganze Breite des Zuführförderers 1 erstreckende Auflegeleiste 21 vorgesehen, welche als Saugleiste ausgebildet ist mit einer an der Oberseite gelochten, über ein schaltbares Ventil mit einer Saugleitung verbundenen Unterdruckkammer 22 (Fig. 1b). Die Auflegeleiste 21 ist in der Mitte in zwei Hälften geteilt, die jedoch aneinandergekuppelt werden können.Behind the spreading device 12 is (Fig. 1a, b) itself extending over the entire width of the feed conveyor 1 Support bar 21 is provided, which as a suction bar is formed with a perforated on the top, over a switchable valve connected to a suction line Vacuum chamber 22 (Fig. 1b). The support bar 21 is in the middle divided in half, but the can be coupled together.

Die Auflegeleiste 21 im Ganzen oder auch jede ihrer Hälften für sich ist in Förderrichtung zwischen einer in Fig. 1a gezeigten vorderen Aufnahmeposition und einer aus Fig. 1b ersichtlichen hinteren Auflegeposition, in welcher sie hinter der Unterdruckkammer 4 des ersten Bandförderers 3 liegt, verfahrbar. Zugleich ist sie mittels eines Pneumatikzylinders 23 um eine horizontale Achse begrenzt schwenkbar.The support bar 21 as a whole or each of its halves is in the conveying direction between one in Fig. 1a shown front recording position and one of Fig. 1b apparent rear lay position, in which they behind the vacuum chamber 4 of the first belt conveyor 3 lies, movable. At the same time, it is by means of a Pneumatic cylinder 23 limited around a horizontal axis swiveling.

Wie am besten aus Fig. 3a,b, in welchen die zweite Klammer 14' des linken Klammerpaares 13a dargestellt ist, ersichtlich, umfasst dieselbe einen über einen Anschluss 24 pneumatisch betätigbaren oberen Klemmbacken 25 und einen feststehenden unteren Gegenbacken 26, welche an einem Laufwagen 27 aufgehängt sind. Der Laufwagen 27 trägt auf einer Grundplatte 28 ein oberes Rollenpaar 29a,b (die hinter der Grundplatte 28 liegenden Teile sind in Fig. 2b durchgezogen dargestellt) und ein unteres Rollenpaar 30a,b, welche eine sich über die ganze Breite der Spreizvorrichtung 12 erstreckende Schiene 31 (Fig. 3b) von oben bzw. von unten berühren und auf ihr abrollen. An der Grundplatte 28 sind beidseits Anschläge 32 (Fig. 3a) befestigt und am oberen Rand ein Kontaktwinkel 33, auf welchen der Positionssensor 19a und der Synchronisationssensor 20a (Fig. 2b) ansprechen.As best seen in Fig. 3a, b, in which the second bracket 14 'of the pair of left clips 13a is shown, can be seen, the same comprises one via a connection 24 pneumatically actuated upper jaws 25 and one fixed lower counter jaws 26, which on a Carriages 27 are suspended. The carriage 27 applies a base plate 28 an upper pair of rollers 29a, b (the rear the base plate 28 parts are in Fig. 2b shown in solid lines) and a lower pair of rollers 30a, b, which extends across the entire width of the spreader 12 extending rail 31 (Fig. 3b) from above or from below touch and roll on it. Are on the base plate 28 attached on both sides stops 32 (Fig. 3a) and at the top Edge a contact angle 33 on which the position sensor 19a and the synchronization sensor 20a (Fig. 2b) respond.

Die erste Klammer 14 und die zweite Klammer 14' sind im wesentlichen gleich aufgebaut. Während jedoch die erste Klammer 14 fest mit dem Zahnriemen 15a, und zwar mit seinem oberen Abschnitt, verbunden ist, ist die zweite Klammer 14' an denselben ankuppelbar. Dazu trägt die Grundplatte 28 als Kupplungseinrichtung einen ersten Pneumatikzylinder 34, an dessen Kolben ein Klemmteil befestigt ist, welches mit einem Gegenhalter 35 zusammenwirkt, indem der Zahnriemen 15a durch das Klemmteil gegen den Gegenhalter 35 geklemmt wird. Eine weitere, mit einem Pneumatikzylinder 36 und einem Gegenhalter 37 gleich aufgebaute Kupplungseinrichtung kann dazu verwendet werden, die zweite Klammer 14' an den unteren Abschnitt des Zahnriemens 15a anzukuppeln. Dadurch können die beiden Klammern 14, 14' bei Bedarf auch gegenläufig bewegt werden.The first bracket 14 and the second bracket 14 'are in constructed essentially the same. However, while the first Clamp 14 firmly with the toothed belt 15a, with his upper section, is connected, the second bracket 14 ' can be coupled to the same. For this purpose, the base plate 28 bears as Coupling device to a first pneumatic cylinder 34 whose piston a clamping part is attached, which with a Counterholder 35 cooperates by the timing belt 15a the clamping part is clamped against the counter-holder 35. A another, with a pneumatic cylinder 36 and a Counterholder 37 coupling device of the same design can used to attach the second bracket 14 'to the lower one To couple section of the toothed belt 15a. This allows the two brackets 14, 14 ', if necessary, also in opposite directions be moved.

Im folgenden wird das erfindungsgemässe Verfahren anhand der Figuren erläutert. Dabei wird gemäss dem geschilderten Aufbau der Zuführvorrichtung der verhältnismässig einfache Fall behandelt, dass die Zuführvorrichtung entweder mit einem breiten Wäschestück belegt wird oder mit höchstens zwei schmalen, die jeweils nicht mehr als höchstens die Hälfte der Breite des Zuführförderers 1 benötigen.In the following, the method according to the invention is described using the Figures explained. It is according to the described Structure of the feeder of the relatively simple Case that the feeder handles either a large piece of laundry is occupied or at most two narrow ones, each no more than at most Need half the width of the feed conveyor 1.

Ein Wäschestück wird manuell den Klammern 14, 14' etwa des linken Klammerpaares 13a zugeführt und erfasst, indem in die Klammern 14, 14' Ecken, welche eine Vorderkante des Wäschestücks begrenzen, eingeführt und von denselben automatisch geklemmt werden. Anschliessend wird überprüft, ob der linke der beiden in der Unterdruckkammer 4 angeordneten Sensoren Belegung der linken Bahnhälfte feststellt. Ist dies der Fall, bleibt die erste Klammer 14 in der Ausgangsstellung. Sobald der Sensor feststellt, dass keine Belegung vorliegt, wird der Elektromotor 16a in Gang gesetzt und verfährt die erste Klammer 14 rasch nach rechts. Zeigt der rechte Sensor Belegung der rechten Bahnhälfte an, wird die erste Klammer höchstens bis an die Grenze der linken Bahnhälfte verfahren. A piece of laundry is manually the clips 14, 14 'about the left pair of brackets 13a fed and detected by in the Brackets 14, 14 'corners, which is a leading edge of the Limit laundry items, imported and from the same are automatically clamped. Then it is checked whether the left of the two in the vacuum chamber 4 arranged sensors occupancy of the left half of the web notes. If this is the case, the first bracket 14 remains in the starting position. Once the sensor detects that If there is no occupancy, the electric motor 16a starts set and moves the first bracket 14 quickly to the right. If the right sensor shows the occupancy of the right half of the web, the first bracket is at most up to the limit of Travel on the left half of the path.

Ist das Wäschestück jedoch schmal, so wird längst vor Erreichen dieser Position dessen Vorderkante gespannt und die zweite Klammer 14' entgegen einer Rückhaltekraft aus der Ausgangsstellung gezogen, worauf der Positionssensor 19a anspricht. Daraufhin wird die Geschwindigkeit des Riemens 15a und damit der ersten Klammer 14 sofort reduziert, so dass die zweite Klammer 14' etwas aufholt und die Vorderkante des Wäschestücks sich entspannt. Darauf wird der Pneumatikzylinder 34 betätigt und die Geschwindigkeit des Riemens 15a und damit der Klammern 14, 14' erhöht. Sobald die zweite Klammer 14' den Synchronisationssensor 20a erreicht, wird aus der Differenz der Position der ersten Klammer 14 und der mit der Position des Synchronisationssensors 20a übereinstimmenden Position der zweiten Klammer 14' die Breite des Wäschestücks bei entspannter Vorderkante bestimmt. Falls sich ergeben hat, dass das Wäschestück nur die linke Bahnhälfte benötigt, wird es bezüglich derselben eingemittet und auf den ersten Bandförderer 3 aufgelegt.However, if the item of laundry is narrow, it is long ago Reaching this position its front edge cocked and the second bracket 14 'against a retaining force from the Starting position pulled, whereupon the position sensor 19a appeals. Thereupon the speed of the belt 15a and thus the first bracket 14 immediately reduced, see above that the second bracket 14 'catches up somewhat and the Front edge of the laundry item relaxes. Then the Pneumatic cylinder 34 operated and the speed of the Belt 15a and thus the brackets 14, 14 'increased. As soon as the second bracket 14 'the synchronization sensor 20a is reached from the difference in position of the first Clip 14 and the position of the Synchronization sensor 20a corresponding position of the second bracket 14 'the width of the laundry relaxed front edge determined. If it turned out that the item of laundry only needs the left half of the web it averaged about the same and at first Belt conveyor 3 placed.

Erreicht dagegen die erste Klammer 14 die Grenze der linken Bahnhälfte, ohne dass der Positionssensor 19a angesprochen hätte oder ergibt die Bestimmung der Breite des Wäschestücks, dass dieselbe über die Breite der linken Bahnhälfte hinausgeht, so wird die erste Klammer 14 bzw. das Klammerpaar 13a gegebenenfalls angehalten, bis der rechte Sensor keine Belegung mehr feststellt. Dann wird das Wäschestück bezüglich der ganzen Bahn eingemittet und auf den ersten Bandförderer 3 aufgelegt. Ist die rechte Bahnhälfte von vornherein nicht belegt, so kann auch die erste Klammer 14 von vornherein über die Grenze der linken Bahnhälfte hinaus verfahren und das Wäschestück bezüglich der ganzen Bahn eingemittet und aufgelegt werden. However, the first bracket 14 reaches the limit of the left Half of the web without addressing the position sensor 19a would have or results in the determination of the width of the Laundry that the same across the width of the left Half of the web goes out, so the first bracket 14 or If necessary, pair of clips 13a stopped until the right one Sensor no longer detects occupancy. Then it will Piece of laundry centered on the entire web and on placed the first belt conveyor 3. Is the right one Half of the web is not occupied from the start, so can the first bracket 14 from the outset over the boundary of the left Move halfway out and the laundry item all over the web and put on.

Zum Auflegen werden die Klammern 14, 14' gelöst und weichen nach aussen aus, so dass (Fig. 1a) der vorderste Bereich des Wäschestücks auf die Auflegeleiste 21, welche sich in ihrer vorderen Aufnahmeposition befindet, zu liegen kommt, wo er von der Unterdruckkammer 22 angesaugt und festgehalten wird. Anschliessend wird je nachdem die Auflegeleiste 21 oder die linke Hälfte derselben mit einer Geschwindigkeit, die grösser ist als die Fördergeschwindigkeit des ersten Bandförderers 3, in ihre hintere Auflegeposition (Fig. 1b) verfahren, wobei die Unterdruckkammer 22 gegen den ersten Bandförderer 3 geschwenkt und in der Auflegeposition schliesslich ausgeschaltet wird, so dass die Vorderkante des Wäschestücks an einer Auflegestelle auf den Bandförderer 3 fällt. Der Unterschied in den Geschwindigkeiten des ersten Bandförderers 3 und der Auflegeleiste 21 wird bei der Bestimmung des Zeitpunkts, in welchem auf dem ersteren genügend Platz zur Verfügung steht, durch eine feste Verzögerung berücksichtigt.To hang up the clips 14, 14 'are released and give way outwards so that (Fig. 1a) the foremost area of the Items of laundry on the support bar 21, which are in their front shooting position is located where it comes to lie is sucked in and held by the vacuum chamber 22. Then, depending on the support bar 21 or left half of it at a rate that is greater than the conveying speed of the first Belt conveyor 3, in its rear laying position (Fig. 1b) process, the vacuum chamber 22 against the first Belt conveyor 3 pivoted and in the laying position is finally turned off so that the front edge of the Items of laundry at a place on the belt conveyor 3 falls. The difference in the speeds of the first Belt conveyor 3 and the support bar 21 is at the Determination of the time at which on the former enough space is available through a fixed Delay taken into account.

Der hintere Teil des Wäschestücks wird dabei am Saugschlitz 11 von der Saugvorrichtung 10 eingesaugt. Durch das Vorziehen des Wäschestücks mit höherer Geschwindigkeit und durch die Einwirkung der Unterdruckkammer 4 des ersten Bandförderers 3 sowie der Saugvorrichtung 10 wird das Wäschestück gestreckt und dafür gesorgt, dass es keine Querfalten wirft. Das Wäschestück wird vom ersten Bandförderer 3 dem zweiten Bandförderer 5 und von diesem schliesslich einem Bearbeitungsgerät, z. B. einer Mangel oder einer Faltmaschine zugeführt, während die Auflegeleiste 21 rasch wieder in ihre Aufnahmeposition verfahren wird.The rear part of the laundry is at the suction slot 11 sucked in by the suction device 10. By the Pulling the laundry at higher speed and by the action of the vacuum chamber 4 of the first Belt conveyor 3 and the suction device 10 will Piece of laundry stretched and made sure that there is none Cross folds throws. The laundry is from the first Belt conveyor 3 and the second belt conveyor 5 finally a processing device, e.g. B. a defect or fed to a folding machine while the support bar 21 is quickly moved back to its receiving position.

Die beschriebene Vorgehensweise zeigt nur ein verhältnismässig einfaches Beispiel, das bezüglich des apparativen und Steuerungsaufwands besonders geringe Anforderungen stellt. Die Belegung kann bezüglich des Durchsatzes jedoch weitergehend optimiert werden. So ist eine kontinuierliche Ueberwachung der Belegung und ihrer Aenderungen und eine Zwischenspeicherung des jeweiligen Zustands möglich, aufgrund welcher nach der Bestimmung der Breite des Wäschestücks jeweils die z. B. der Ausgangsstellung des jeweiligen Klammerpaares nächstliegende für das Wäschestück ausreichende Lücke bestimmt und die Klammern in den Bereich dieser Lücke verfahren werden.The procedure described only shows one comparatively simple example, which regarding the apparatus and control effort particularly low Demands. The allocation can with regard to the Throughput can be further optimized. So is continuous monitoring of the occupancy and its Changes and a temporary storage of the respective Condition possible, on the basis of which after determining the Width of the piece of laundry each z. B. the Starting position of the respective pair of brackets closest sufficient gap for the laundry item determined and the Parentheses are moved into the area of this gap.

Die Zahl der in der Länge überlappend nebeneinander aufgelegten Wäschestücke ist dabei prinzipiell nur durch die Auflösung nach der Breite, mit der die Belegung des ersten Bandförderers 3 überwacht wird, begrenzt. Diese kann durch die Anordnung einer grösseren Zahl von Sensoren längs der Ueberwachungslinie vergrössert werden oder dadurch, dass etwa bei einem Abstand zwischen benachbarten Sensoren, der knapp unter der minimalen zu erwartenden Breite von Wäschestücken liegt, die Positionen der Klammern beim Auflegen des Wäschestücks zur genaueren Positionsbestimmung herangezogen werden und die Sensoren nur der Ueberwachung bezüglich der Länge dienen.The number of overlapping in length side by side items of laundry put on are in principle only by the Resolution according to the width with which the first Belt conveyor 3 is monitored, limited. This can be done by the arrangement of a larger number of sensors along the Monitoring line can be enlarged or by that about at a distance between adjacent sensors, the just below the minimum expected width of Laundry items, the positions of the brackets Placing the item of laundry for more precise positioning be used and the sensors only for monitoring serve in terms of length.

Daneben ist es auch möglich, ausschliesslich die Klammerpositionen beim Auflegen zu überwachen und Annahmen über die maximale Länge der Wäschestücke - absolut oder abhängig von der jeweiligen Breite - zu treffen und auf Sensoren zu verzichten.It is also possible to use only the Monitor parenthesis positions when hanging up and make assumptions about the maximum length of the laundry items - absolutely or depending on the respective width - to meet and on Dispense with sensors.

Die Wäschestücke können auch jeweils, etwa im Hinblick auf die folgende Bearbeitung, nur auf bestimmte Teilbahnen oder Zusammenfassungen benachbarter Teilbahnen aufgelegt oder bezüglich derselben positioniert, z. B. eingemittet werden. The items of laundry can also each, for example with regard to the following processing, only on certain partial webs or Summaries of neighboring partial webs launched or positioned with respect to the same, e.g. B. be averaged.

In jedem Fall ist stets die Bestimmung der Breite des Wäschestücks - je nach den Umständen mit grösserer oder geringerer Genauigkeit - erforderlich. Für eine einigermassen genaue Bestimmung der Breite eignet sich dabei eine Einrichtung wie die oben beschriebene mit einem Positionsmesssystem für die Bestimmung der Positionen der Klammern, wobei die zweite Klammer nur durch einen Sensor daraufhin überwacht werden muss, ob sie sich in einer bestimmten Position befindet oder nicht, besonders gut, da sie sowohl apparativ als auch was die Auswertung der Signale betrifft, sehr einfach ist und keine störenden Auswirkungen auf den Spreizvorgang hat.In any case, the determination of the width of the Items of laundry - depending on the circumstances, with larger or lower accuracy - required. For one reasonably accurate determination of the width is suitable a device like the one described above with one Position measuring system for determining the positions of the Brackets, the second bracket only by a sensor then it must be monitored whether they are in a particular position or not, particularly good since they both in terms of equipment and what the evaluation of the signals concerns, is very simple and has no disruptive effects on the spreading process.

Eine derartige Einrichtung zum Bestimmen der Breite des Wäschestücks kann auch im Rahmen bekannter Verfahren eingesetzt werden, bei denen beispielsweise nur eine Einmittung der Wäschestücke bezüglich der ganzen Bahn durchgeführt wird. Die Rückhaltekraft, mit der die zweite Klammer in der Ausgangsstellung festgehalten wird, kann z. B. nach der Art der Wäschestücke eingestellt oder auch, eventuell zusätzlich, nach ihrer Breite gesteuert werden.Such a device for determining the width of the Items of laundry can also be made using known methods are used in which, for example, only one Submission of the laundry items with respect to the entire web is carried out. The retention force with which the second Bracket is held in the starting position, z. B. adjusted according to the type of laundry or possibly additionally, can be controlled according to their width.

Claims (19)

  1. Method for feeding pieces of linen to a processing apparatus by means of a feed conveyor (1) and a spreading device (12) arranged in the conveying direction of said feed conveyor and having at least one pair (13a, 13b) of clamps, comprising clamps (14, 14') movable along a travel zone transversely to the conveying direction, in each case two adjacent corners of a piece of linen being gripped by the clamps (14, 14') of a pair (13a, 13b) of clamps in the starting position thereof and the clamps (14, 14') being moved apart until a front edge of a piece of linen which is present between the corners is spread and said clamps being positioned along the travel zone, and the piece of linen then being released by opening the clamps (14, 14') and at least that region of said piece of linen which is adjacent to the front edge being laid down on the feed conveyor (1), characterized in that automatically, in each case before the piece of linen is released
    the occupation of the feed conveyor (1) is checked,
    the width of the piece of linen in the direction of the travel zone is determined when said piece of linen is spread and
    a sufficient gap in the occupation of the feed conveyor (1), which is at least the width of the piece of linen, is searched for and the clamps (14, 14') are moved in such a way that, after said gap has been found, they are positioned within the sufficient gap with spread piece of linen.
  2. Method according to Claim 1, characterized in that, when a plurality of sufficient gaps are present, the clamps (14, 14') are positioned within those which are closest to their starting position.
  3. Method according to Claim 1 or 2, characterized in that, in each case before being laid down on the feed conveyor (1), the front edge of the piece of linen is advanced, at a speed exceeding the conveying speed, to a lay-down position of said piece of linen.
  4. Method according to any of Claims 1 to 3, characterized in that the checking of the occupation of the feed conveyor (1) is effected over its entire width and essentially continuously by a monitoring device.
  5. Method according to Claim 3 or 4, characterized in that the checking of the occupation of the feed conveyor (1) is effected in each case at a fixed feed conveyor position located before the lay-down position, relative to the conveying direction, and in each case the presence of a sufficient gap therein at a lay-down time is predetermined therefrom.
  6. Method according to any of Claims 2 to 5, characterized in that, for searching for a sufficient gap, in each case a first clamp (14) of a pair (13a, 13b) of clamps is moved until a free place corresponding to its position has been found and in each case is then moved on as long as the feed conveyor (1) is free, until the distance from the first clamp (14) to said free place reaches at least the width of the piece of linen.
  7. Method according to any of Claims 1 to 6, characterized in that in addition to its width, whether it is present within a specific interval or within one of a plurality of specific intervals of the travel zone is taken into account as an additional criterion for a gap being a sufficient gap.
  8. Method according to any of Claims 1 to 7, characterized in that in each case only one first clamp (14) of the pair (13a, 13b) of clamps is moved until spreading of the front edge, and spreading is detected if the second clamp (14') is pulled out of its starting position, against a retaining force, by the action of the piece of linen.
  9. Method according to Claim 8, characterized in that the width of the piece of linen is determined from the difference between the positions of the first clamp (14) and of the second clamp (14') when the second clamp (14') reaches a position offset from the starting position.
  10. Feed device for carrying out the method according to any of Claims 1 to 9, having a feed conveyor (1) and a spreading device (12) comprising at least one pair (13a, 13b) of clamps (14, 14') for gripping corners of a piece of linen and releasing them, which can be moved by means of a drive device along a travel zone arranged upstream in the conveying direction of the feed conveyor (1) and extending transversely relative to said direction, and comprising a position measuring system for monitoring the position of, in each case, at least one first clamp (14) of each pair (13a, 13b) of clamps, a second clamp (14') of each pair (13a, 13b) of clamps being not connected or detachably connected to the drive device, characterized in that the spreading device (12) has a synchronization sensor (20a, 20b) for each pair (13a, 13b) of clamps, for monitoring the position of the second clamp (14') of the pair (13a, 13b) of clamps to determine whether or not it is in a specific position offset from the starting position.
  11. Feed device according to Claim 10, characterized in that the spreading device (12) has, for each pair (13a, 13b) of clamps, a position sensor (19a, 19b) which monitors the second clamp (14') to determine whether or not it is in the starting position.
  12. Feed device according to Claim 10 or 11, characterized in that the synchronization sensor (20a, 20b) and optionally the position sensor (19a, 19b) are each in the form of proximity switches.
  13. Feed device according to any of Claims 10 to 12, characterized in that it comprises a monitoring device for monitoring the occupation of the feed conveyor (1), which monitoring device is suitable for detecting, in at least one position, the instantaneous occupation of the feed conveyor (1) along a monitoring line running transversely to the conveying direction.
  14. Feed device according to Claim 13, characterized in that the monitoring device comprises at least one group of two or more sensors which are distributed along the monitoring line.
  15. Feed device according to any of Claims 10 to 14, characterized in that the drive device for each pair (13a, 13b) of clamps comprises an envelope element driveable along the travel zone, and the second clamp (14') is firmly connected in each case to a coupling means, by means of which it can be detachably coupled to the envelope element.
  16. Feed device according to Claim 15, characterized in that the coupling means comprises a clamp part displaceable towards the envelope element and an opposite holding device (35, 37) arranged on the opposite side of the envelope element.
  17. Feed device according to Claim 16, characterized in that the clamp part is fastened to a piston of a pneumatic cylinder (34, 36).
  18. Feed device according to any of Claims 15 to 17, characterized in that a first clamp (14) of each pair (13a, 13b) of clamps is in each case firmly connected to the envelope element.
  19. Feed device according to any of Claims 15 to 18, characterized in that the position measuring system comprises in each case a shaft encoder (18a, 18b) which monitors the position of the envelope element.
EP97103439A 1996-03-08 1997-03-03 Method and device for feeding pieces of clothes to a processing apparatus Expired - Lifetime EP0794279B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH610/96 1996-03-08
CH00610/96A CH696668A5 (en) 1996-03-08 1996-03-08 Method for feeding items of laundry to a processing device, and delivery device.
CH61096 1996-03-08

Publications (2)

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EP0794279A1 EP0794279A1 (en) 1997-09-10
EP0794279B1 true EP0794279B1 (en) 2000-12-06

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EP97103439A Expired - Lifetime EP0794279B1 (en) 1996-03-08 1997-03-03 Method and device for feeding pieces of clothes to a processing apparatus

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US (1) US5815963A (en)
EP (1) EP0794279B1 (en)
JP (1) JP4096124B2 (en)
CH (1) CH696668A5 (en)
DE (1) DE59702699D1 (en)
DK (1) DK0794279T3 (en)
ES (1) ES2154427T3 (en)

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DE102019008417A1 (en) * 2019-12-04 2021-06-10 Herbert Kannegiesser Gmbh Method and device for feeding items of laundry to a laundry treatment facility
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EP3636825B1 (en) 2016-09-29 2021-03-24 Herbert Kannegiesser GmbH Method and device for supplying laundry items to a laundry treatment device, in particular a mangle
EP4089228A1 (en) * 2021-05-12 2022-11-16 Herbert Kannegiesser GmbH Method for feeding laundry items to a mangle or similar

Also Published As

Publication number Publication date
DK0794279T3 (en) 2001-04-02
ES2154427T3 (en) 2001-04-01
US5815963A (en) 1998-10-06
JP4096124B2 (en) 2008-06-04
DE59702699D1 (en) 2001-01-11
EP0794279A1 (en) 1997-09-10
CH696668A5 (en) 2007-09-14
JPH10300A (en) 1998-01-06

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