EP0565837B1 - Method and apparatus for removing contacts of envelopes - Google Patents

Method and apparatus for removing contacts of envelopes Download PDF

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Publication number
EP0565837B1
EP0565837B1 EP93103016A EP93103016A EP0565837B1 EP 0565837 B1 EP0565837 B1 EP 0565837B1 EP 93103016 A EP93103016 A EP 93103016A EP 93103016 A EP93103016 A EP 93103016A EP 0565837 B1 EP0565837 B1 EP 0565837B1
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EP
European Patent Office
Prior art keywords
envelope
envelopes
suction
edge
opened
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
Application number
EP93103016A
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German (de)
French (fr)
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EP0565837A1 (en
Inventor
Bernd Lund
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STIELOW GmbH
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STIELOW GmbH
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Publication date
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Publication of EP0565837A1 publication Critical patent/EP0565837A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43MBUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
    • B43M7/00Devices for opening envelopes
    • B43M7/02Devices for both opening envelopes and removing contents
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00Cutting
    • Y10S83/912Envelope openers

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 3.
  • a device in which the envelopes are preferably opened by cutting on two long and one short side.
  • the envelopes are then conveyed horizontally into a removal device, which consists of a conveyor belt on which the envelopes rest and above which a vacuum drum is arranged, which sucks the upper envelope side and folds upwards. Only one cover page is pulled off to the side. The other cover page is conveyed in a straight line with the content. There is a risk that the contents of the envelope will be sucked in with the upper side of the envelope and thus also folded away. As a result, the removal is at least incomplete.
  • a device is known from US Pat. No. 4,295,321, through which the envelope, which is open on two short and one long side, is fed to a vacuum drum which sucks in one open envelope side and thus conveys the envelope downward.
  • the content is captured by a take-off roll.
  • the vacuum drum only grips one side of the cover and pulls down the entire cover due to the connection on the long edge that is not open.
  • the invention is based on the object of providing a method and a device of the type mentioned at the outset, the device having a compact structure so that the envelope only has to travel short distances, different envelope formats can be processed at the same time and the contents are removed automatically .
  • the envelope is opened on one short and two long edges. It is not only opened on a short edge.
  • the envelope opened in this way is conveyed standing on one of the open long edges to the removal device, in which the two sides of the envelope are pulled off to the left and right, preferably by approximately 90 °.
  • the content is moved in a straight line and is therefore practically removed or can also be used for further processing.
  • the removal takes place completely automatically.
  • the short, non-open rear edge in the direction of transport supports the removal movement by pulling off the two cover pages to the left and right, and the rear edge acting accordingly on the cover contents in the direction of its desired straight-line movement.
  • the opening of the second, long edge is carried out standing immediately before entering the extraction device.
  • By pulling off the cover pages on the left and right it is either visually or by means of appropriate sensors that it can be recognized whether the entire content is actually being moved in a straight line. Since the removal is practically completely automatic, the operator can concentrate on monitoring and possibly sorting.
  • the moving parts are essentially relatively slowly rotating parts, so that the noise is low.
  • the device shown in the drawing enables envelopes of various sizes to be processed simultaneously. Sorting is therefore not necessary.
  • the envelopes are simply stacked with a short edge to the right in the input slot 1.
  • In the area of this input shaft 1 there are toothed belts 2 which transport the stack of envelopes by means of a feed weight 3 in the direction of a removal suction arm 4.
  • Retention fingers 5 are coupled to a sensor 6. These ensure the correct position of the inserted envelopes.
  • An envelope is then removed from the shaft by the suction arm charged with vacuum and placed on the transport level 7. This is where the separation takes place.
  • a continuously driven rubber roller 8 serves as a register for correct positioning to open the short edge of the cover.
  • three toothed belts 10 with transport cams 11 are arranged in the transport plane 7.
  • the arrangement is selected so that at different sizes of the envelopes at least two of the three transport cams are engaged with the envelope for a positive transport in the direction of the first cutting mechanism. This becomes clear when looking at FIGS. 1 and 2 in connection with FIG. 7.
  • the envelope is transported with its long edge to a leading edge 13 of a second cutter 14 and positioned there (see also FIG. 8). During this processing and movement, the envelope practically lies in the transport plane 7, which can be seen in FIGS. 7 and 8.
  • a chain drive 15 with transport fingers 16 (see FIG. 8) is arranged above the transport plane 7.
  • the transport fingers 16 are used to move the envelope into the second cutter 14 to open it on a long envelope edge.
  • the envelope opened in the second cutter 14 (see FIGS. 1 and 2) is conveyed by the second cutter 14 against a right side wall 17 of the transport plane 7 (FIG. 2).
  • a rocker 18 with a continuously driven rubber roller 19 is arranged under the transport plane (see FIG. 6).
  • the rubber roller 19 transports the envelope when it protrudes into the transport plane in a pocket 20 of a turning station arranged in the direction of movement.
  • a second rubber roller 21 mounted on the pivot point of the rocker 18 ensures correct positioning.
  • the pocket 20 is pivotable through 90 ° to set up an envelope moved into it, i.e. to bring it into a vertical position.
  • the folded envelope also reaches a lower-lying transport surface 22, in which the third cutter 23 is arranged.
  • the envelope is here on its still closed second long side. It is raised in the pocket 20 by the dimension x (see FIG. 6) and aligned on the transport surface 22.
  • An eccentric 24 is used to insert the envelope into the third cutter 23 with the aid of friction.
  • This third cutter 23 opens the lower longitudinal edge of the envelope and thereby transports it in the direction of the actual removal device or take-off device.
  • This is formed by two standing suction cylinders 25 and 26.
  • a sensor 27 controls the application of openings 28 of the two suction cylinders with negative pressure and starts the rotary movement of the suction cylinders.
  • the sensor 27 itself is stationary.
  • the positioning of the openings 28 of the two suction cylinders takes place by means of a sensor 29 and a clutch-brake combination on a drive axle 30.
  • the rotary movement of this drive axle 30 is transmitted to the other rotary-driven parts by means of belts and gearwheels, as is the case when viewing FIG. 3 becomes clear.
  • a pair of gears 31 drives the suction cylinder 26. This is resiliently mounted on a rocker 32 to ensure adaptation to different envelope thicknesses.
  • Two rails 34 serve to strip the cover pages U and V after the deflection by the suction cylinders and after the vacuum has been switched off, triggered by the sensor 33 (see FIG. 5).
  • a front friction roller 35 serves to fan out one cover side U.
  • a second friction roller arranged opposite is spring-mounted and pulls the cover on the other cover side V in a force-locking manner into an ejection path 37.
  • the envelope opened on a short and a long side in a more or less conventional manner is, after being set up, conveyed upright through the pocket 20 into the third cutting mechanism 23, in order to be opened at the long edge which is still closed and then at the bottom.
  • this cutting tool 23 forms a compact unit with the actual removal device.
  • the faster running friction roller 35 fans out the cover page U.
  • the other friction roller 36 detects the other cover page V and moves it into the discharge path 37. This movement of practically the entire cover, which still connects the two sides U and V on one short side, acts on the cover contents and supports this closed rear edge the transport movement by the pair of rollers 38. This practically takes place automatically. The recording and processing by appropriate subsequent devices is possible.
  • the inside of the envelope is clearly recognizable by the operator due to its stretched arrangement, so that visual inspection is possible. This control can also be carried out automatically by sensors.
  • the envelope is then ejected by an ejector roller 39.
  • each suction cylinder 25, 26 has two suction sections 25A, 25B and 26A, 26B.
  • the bearing can be recognized by the corresponding shafts.
  • the supply of negative pressure to the openings 28 takes place via a negative pressure source 40 and a rotatable suction air duct 41, which establishes a connection to a bore in each drive shaft.
  • the gears 31 shown in Fig. 3 and corresponding drive means and the storage of the parts can also be seen.
  • FIG. 3 an envelope is shown immediately when entering the area of the suction cylinder.
  • Fig. 4 the processing has advanced further, i.e. the envelope is just leaving the third cutter 23 and the envelope pages U and V have already been deflected so that the envelope content Z has reached the area of the rollers 38. Approximately this position is also indicated in Fig. 1. It can be clearly seen that the envelope is conveyed upright into the region of the removal device, and that the envelope content is conveyed and removed in a straight line, so that there is a high degree of certainty that the entire contents are gripped by the pair of rollers 38. The inside of the redirected cover pages U and V is clearly visible, so that it can be recognized if the entire envelope content has not been pulled off in a straight line.
  • the device is very compact.
  • the construction and drive unit of the third cutting unit with the removal device contributes to this.

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruches 1 bzw. eine Vorrichtung nach dem Oberbegriff des Patentanspruches 3.The invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 3.

Aus der US-PS 4,893,454 ist ein Verfahren und eine Vorrichtung der vorstehend genannten Art bekannt. Bei dieser Vorrichtung werden die Umschläge an zwei kurzen und einer langen Kante geöffnet, einer Entnahmevorrichtung zugefördert, an der die Umschlagseiten durch mit Saugern versehene Hebel seitlich nach unten gebogen werden, um die Umschlagseiten praktisch zu falzen, so daß der Inhalt sichtbar und freigelegt wird. Dieser Inhalt kann dann entnommen werden. Dieses kann dadurch geschehen, daß die geöffneten Umschläge nacheinander in eine offene Transporteinrichtung übergeben werden, in der mehrere Umschläge zur Entnahme präsentiert werden.From US-PS 4,893,454 a method and an apparatus of the above-mentioned type is known. In this device, the envelopes are opened at two short and one long edge, conveyed to a removal device, on which the envelope pages are bent laterally downwards by levers provided with suction cups in order to practically fold the envelope pages, so that the contents are visible and exposed. This content can then be extracted. This can be done by transferring the opened envelopes one after the other to an open transport facility in which several envelopes are presented for removal.

Aus der FR-PS 2 135 481 ist eine Vorrichtung bekannt, bei der die Umschläge vorzugsweise an zwei langen und einer kurzen Seite durch Schneiden geöffnet werden. Die Umschläge werden dann liegend in eine Entnahmevorrichtung gefördert, die aus einem Förderband besteht, auf der die Umschläge aufliegen und über dem eine Unterdrucktrommel angeordnet ist, die die obere Umschlagseite ansaugt und nach oben abklappt. Es wird nur eine Umschlagseite seitlich abgezogen. Die andere Umschlagseite wird gradlinig mit dem Inhalt weitergefördert. Es besteht die Gefahr, daß der Umschlaginhalt mit der oberen Umschlagseite mit angesaugt und damit mit weggeklappt wird. Hierdurch wird die Entnahme zumindest unvollständig.From FR-PS 2 135 481 a device is known in which the envelopes are preferably opened by cutting on two long and one short side. The envelopes are then conveyed horizontally into a removal device, which consists of a conveyor belt on which the envelopes rest and above which a vacuum drum is arranged, which sucks the upper envelope side and folds upwards. Only one cover page is pulled off to the side. The other cover page is conveyed in a straight line with the content. There is a risk that the contents of the envelope will be sucked in with the upper side of the envelope and thus also folded away. As a result, the removal is at least incomplete.

Aus der US-PS 5,052,875 ist ebenfalls eine Vorrichtung und ein Verfahren bekannt, gemäß der Oberbegriffe der Ansprüche 1 und 3, bei der die Umschläge ebenfalls an einer langen Kante, die oben liegt, und an den zwei kurzen Kanten geöffnet werden. Auf der nach wie vor geschlossenen langen Kante steht der Umschlag, dessen Seiten durch Sauger auseinanderbewegt und einer Führung zur Aufrechterhaltung und Fortsetzung dieser Trennbewegung zugefördert werden. Der Umschlaginhalt kann dann nach oben entnommen werden.From US-PS 5,052,875 a device and a method is also known, according to the preambles of claims 1 and 3, in which the envelopes are also opened on a long edge, which is on top, and on the two short edges. On the long edge, which is still closed, there is the envelope, the sides of which are moved apart by suction and conveyed to a guide for maintaining and continuing this separating movement. The contents of the envelope can then be removed upwards.

Aus der US-PS 4,295,321 ist eine Vorrichtung bekannt, durch die der an zwei kurzen und einer langen Seite geöffnete Umschlag liegend einer Vakuumtrommel zugeführt wird, die die eine geöffnete Umschlagseite ansaugt und so den Umschlag nach unten abfördert. Der Inhalt wird von einer Abzugsrolle erfaßt. Die Vakuumtrommel erfaßt nur die eine Umschlagseite und zieht den gesamten Umschlag, bedingt durch die Verbindung an der nicht geöffneten, langen Kante, nach unten ab.A device is known from US Pat. No. 4,295,321, through which the envelope, which is open on two short and one long side, is fed to a vacuum drum which sucks in one open envelope side and thus conveys the envelope downward. The content is captured by a take-off roll. The vacuum drum only grips one side of the cover and pulls down the entire cover due to the connection on the long edge that is not open.

Der Erfindung liegt nun die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, wobei die Vorrichtung kompakt aufgebaut ist, so daß der Umschlag nur kurze Wege zurückzulegen braucht, gleichzeitig unterschiedliche Umschlagformate bearbeitet werden können und eine automatische Entnahme des Inhaltes erfolgt.The invention is based on the object of providing a method and a device of the type mentioned at the outset, the device having a compact structure so that the envelope only has to travel short distances, different envelope formats can be processed at the same time and the contents are removed automatically .

Diese Aufgabe wird grundsätzlich durch das Verfahren des Anspruches 1 bzw. durch die Vorrichtung nach Anspruch 3 gelöst. In den Ansprüchen 2 bzw. 4 sind besondere Ausgestaltungen unter Schutz gestellt.This object is basically achieved by the method of claim 1 or by the device according to claim 3. In claims 2 and 4, special configurations are protected.

Erfindungsgemäß wird der Umschlag an einer kurzen und zwei langen Kanten geöffnet. Nicht geöffnet wird er also lediglich an einer kurzen Kante. Der auf diese Weise geöffnete Umschlag wird auf einer der geöffneten langen Kanten stehend der Entnahmevorrichtung zugefördert, in der die beiden Umschlagseiten nach links und rechts, vorzugsweise um ca. 90°, abgezogen werden. Der Inhalt wird gradlinig fortbewegt und ist so praktisch entnommen bzw. kann er auch einer Weiterverarbeitung zugeführt werden. Die Entnahme findet vollständig automatisch statt. Die in Transportrichtung hinten liegende, nicht geöffnete kurze Kante unterstützt die Entnahmebewegung dadurch, daß die beiden Umschlagseiten nach links und rechts abgezogen werden, und die hintere Kante entsprechend auf den Umschlaginhalt in Richtung seiner erwünschten gradlinigen Bewegung einwirkt.According to the invention, the envelope is opened on one short and two long edges. It is not only opened on a short edge. The envelope opened in this way is conveyed standing on one of the open long edges to the removal device, in which the two sides of the envelope are pulled off to the left and right, preferably by approximately 90 °. The content is moved in a straight line and is therefore practically removed or can also be used for further processing. The removal takes place completely automatically. The short, non-open rear edge in the direction of transport supports the removal movement by pulling off the two cover pages to the left and right, and the rear edge acting accordingly on the cover contents in the direction of its desired straight-line movement.

Bei einer vorteilhaften Ausführungsform erfolgt die Öffnung der zweiten, langen Kante stehend unmittelbar vor dem Eintritt in die Abzugseinrichtung. Hierdurch entsteht eine kompakte Bauweise, die es ermöglicht, das Schneidwerk für diese zweite, dann untenliegende lange Kante und die Abzugseinrichtung gemeinsam anzutreiben. Dadurch, daß die Umschlagseiten links und rechts abgezogen werden, ist es entweder visuell oder durch entsprechende Sensoren erkennbar, ob wirklich der gesamte Inhalt gradlinig weiterbewegt wird. Da die Entnahme praktisch vollständig automatisch erfolgt, kann die Bedienungsperson sich auf das Überwachen und ggf. eine Sortierung konzentrieren. Die beweglichen Teile sind im wesentlichen relativ langsam rotierende Teile, so daß die Geräuschentwicklung gering ist.In an advantageous embodiment, the opening of the second, long edge is carried out standing immediately before entering the extraction device. This creates a compact design, which makes it possible to drive the cutting unit for this second, then long, lower edge and the extraction device together. By pulling off the cover pages on the left and right, it is either visually or by means of appropriate sensors that it can be recognized whether the entire content is actually being moved in a straight line. Since the removal is practically completely automatic, the operator can concentrate on monitoring and possibly sorting. The moving parts are essentially relatively slowly rotating parts, so that the noise is low.

In den Ansprüchen 5 bis 10 sind vorteilhafte Ausgestaltungen unter Schutz gestellt.In the claims 5 to 10, advantageous embodiments are protected.

Im folgenden wird die Erfindung unter Hinweis auf die Zeichnung anhand eines Ausführungsbeispieles näher erläutert.The invention is explained in more detail below with reference to the drawing using an exemplary embodiment.

Es zeigt:

Fig. 1
eine perspektivische Ansicht schräg von oben einer Ausführungsform der Erfindung;
Fig. 2
eine Draufsicht der Vorrichtung nach Fig. 1 von oben;
Fig. 3
eine Ansicht der Entnahmevorrichtung bzw. Abzugseinrichtung im vergrößerten Maßstab von oben;
Fig. 4
einen Schnitt gemäß der Linie A-A der Fig. 3;
Fig. 5
eine der Fig. 4 entsprechende Ansicht von oben, jedoch mit einem Umschlag in einem weiter fortgeschrittenen Stadium des Entnahmevorganges;
Fig. 6
eine Einzelheit in Seitenansicht des Teiles der Vorrichtung zum Übergeben der bereits an zwei Seiten geöffneten Umschläge in den letzten Bearbeitungsbereich der Vorrichtung;
Fig. 7
eine Einzelheit in Seitenansicht des Teils der Vorrichtung zum Zuführen der Umschläge zum ersten Schneid- oder Schlitzwerk;
und
Fig. 8
eine Einzelheit in Seitenansicht zum Zuführen der Umschläge zum zweiten Schlitz oder Schneidwerk.
It shows:
Fig. 1
a perspective view obliquely from above an embodiment of the invention;
Fig. 2
a plan view of the device of Figure 1 from above.
Fig. 3
a view of the removal device or trigger device on an enlarged scale from above;
Fig. 4
a section along the line AA of Fig. 3;
Fig. 5
a view corresponding to Figure 4 from above, but with an envelope in a more advanced stage of the removal process.
Fig. 6
a detail in side view of the part of the device for transferring the envelopes already opened on two sides in the last processing area of the device;
Fig. 7
a detail in side view of the part of the device for feeding the envelopes to the first cutting or slitting unit;
and
Fig. 8
a detail in side view for feeding the envelopes to the second slot or cutter.

Durch die in der Zeichnung dargestellte Vorrichtung können Umschläge unterschiedlichster Größe gleichzeitig bearbeitet werden. Eine Sortierung ist daher nicht erforderlich. Die Umschläge werden lediglich mit einer kurzen Kante nach rechts ausgerichtet in dem Eingangsschacht 1 gestapelt. In dem Bereich dieses Eingangsschachtes 1 sind Zahnriemen 2 vorhanden, die den Umschlagstapel mittels eines Vorschubgewichtes 3 in Richtung eines Entnahmesaugarmes 4 transportieren. Rückhaltefinger 5 sind mit einem Sensor 6 gekoppelt. Diese sorgen für eine korrekte Entnahmestellung der eingelegten Umschläge. Durch den mit Vakuum beaufschlagten Saugarm wird dann ein Umschlag aus den Schacht entnommen und auf die Transportebene 7 gelegt. Hier erfolgt also die Vereinzelung. Eine kontinuierlich angetriebene Gummiwalze 8 dient als Passer für eine korrekte Positionierung zum Öffnen der einen kurzen Umschlagkante.The device shown in the drawing enables envelopes of various sizes to be processed simultaneously. Sorting is therefore not necessary. The envelopes are simply stacked with a short edge to the right in the input slot 1. In In the area of this input shaft 1 there are toothed belts 2 which transport the stack of envelopes by means of a feed weight 3 in the direction of a removal suction arm 4. Retention fingers 5 are coupled to a sensor 6. These ensure the correct position of the inserted envelopes. An envelope is then removed from the shaft by the suction arm charged with vacuum and placed on the transport level 7. This is where the separation takes place. A continuously driven rubber roller 8 serves as a register for correct positioning to open the short edge of the cover.

Für den Transport des Umschlages in das erste Schneidwerk 9 sind in der Transportebene 7 drei Zahnriemen 10 mit Transportnocken 11 angeordnet. Die Anordnung ist so gewählt, daß bei unterschiedlicher Größe der Umschläge mindestens zwei der drei Transportnocken für einen positiven Transport in Richtung des ersten Schneidwerkes mit dem Umschlag in Eingriff sind. Dieses wird beim Betrachten der Fig. 1 und 2 in Verbindung mit Fig. 7 deutlich.For the transport of the envelope into the first cutter 9, three toothed belts 10 with transport cams 11 are arranged in the transport plane 7. The arrangement is selected so that at different sizes of the envelopes at least two of the three transport cams are engaged with the envelope for a positive transport in the direction of the first cutting mechanism. This becomes clear when looking at FIGS. 1 and 2 in connection with FIG. 7.

Durch das erste Schneidwerk 9 und eine Gummiwalze 12 wird der Umschlag mit seiner langen Kante an eine Führungskante 13 eines zweiten Schneidwerks 14 transportiert und dort positioniert (siehe auch Fig. 8). Bei dieser Bearbeitung und Bewegung liegt der Umschlag praktisch in der Transportebene 7, die in den Fig. 7 und 8 erkennbar ist.Through the first cutter 9 and a rubber roller 12 the envelope is transported with its long edge to a leading edge 13 of a second cutter 14 and positioned there (see also FIG. 8). During this processing and movement, the envelope practically lies in the transport plane 7, which can be seen in FIGS. 7 and 8.

Über der Transportebene 7 ist ein Kettentrieb 15 mit Transportfingern 16 (siehe Fig. 8) angeordnet. Die Transportfinger 16 dienen der Bewegung des Umschlages in das zweite Schneidwerk 14 zum Öffnen an einer langen Umschlagkante. Der in dem zweiten Schneidwerk 14 (siehe Fig. 1 und 2) geöffnete Umschlag wird durch das zweite Schneidwerk 14 gegen eine rechte Seitenwand 17 der Transportebene 7 gefördert (Fig. 2). In diesem Bereich ist unter der Transportebene eine Schwinge 18 mit einer kontinuierlich angetriebenen Gummirolle 19 angeordnet (siehe Fig. 6).A chain drive 15 with transport fingers 16 (see FIG. 8) is arranged above the transport plane 7. The transport fingers 16 are used to move the envelope into the second cutter 14 to open it on a long envelope edge. The envelope opened in the second cutter 14 (see FIGS. 1 and 2) is conveyed by the second cutter 14 against a right side wall 17 of the transport plane 7 (FIG. 2). In this area, a rocker 18 with a continuously driven rubber roller 19 is arranged under the transport plane (see FIG. 6).

Die Gummirolle 19 transportiert den Umschlag, wenn sie in die Transportebene vorsteht in eine in Bewegungsrichtung angeordnete Tasche 20 einer Wendestation. Eine auf dem Drehpunkt der Schwinge 18 gelagerte zweite Gummirolle 21 sorgt für eine korrekte Positionierung.The rubber roller 19 transports the envelope when it protrudes into the transport plane in a pocket 20 of a turning station arranged in the direction of movement. A second rubber roller 21 mounted on the pivot point of the rocker 18 ensures correct positioning.

Die Tasche 20 ist um 90° schwenkbar, um einen in sie hineinbewegten Umschlag aufzustellen, d.h. in eine senkrechte Stellung zu bringen. Hierdurch gelangt der aufgestellte Umschlag auch auf eine tieferliegende Transportfläche 22, in der das dritte Schneidwerk 23 angeordnet ist. Der Umschlag steht hier auf seiner noch geschlossenen zweiten Längsseite. Er wird in der Tasche 20 um das Maß x (siehe Fig. 6) angehoben und auf der Transportfläche 22 ausgerichtet. Ein Exzenter 24 dient dem Einschieben des Umschlages mit Hilfe von Friktion in das dritte Schneidwerk 23.The pocket 20 is pivotable through 90 ° to set up an envelope moved into it, i.e. to bring it into a vertical position. As a result, the folded envelope also reaches a lower-lying transport surface 22, in which the third cutter 23 is arranged. The envelope is here on its still closed second long side. It is raised in the pocket 20 by the dimension x (see FIG. 6) and aligned on the transport surface 22. An eccentric 24 is used to insert the envelope into the third cutter 23 with the aid of friction.

Dieses dritte Schneidwerk 23 öffnet die untere Längskante des Umschlages und transportiert ihn dabei in Richtung der eigentlichen Entnahmevorrichtung oder Abzugseinrichtung. Diese wird durch zwei stehende Saugzylinder 25 und 26 gebildet. Ein Sensor 27 steuert die Beaufschlagung von Öffnungen 28 der beiden Saugzylinder mit Unterdruck und startet die Drehbewegung der Saugzylinder. Der Sensor 27 selbst ist ortsfest.This third cutter 23 opens the lower longitudinal edge of the envelope and thereby transports it in the direction of the actual removal device or take-off device. This is formed by two standing suction cylinders 25 and 26. A sensor 27 controls the application of openings 28 of the two suction cylinders with negative pressure and starts the rotary movement of the suction cylinders. The sensor 27 itself is stationary.

Diese Teile sind in Draufsicht in Fig. 3 zusammen mit den Antriebsmitteln der verschiedenen, drehangetriebenen Teile und der Lagerung dieser Teile dargestellt. Es ist erkennbar, daß der Aufbau sehr kompakt ist, und daß in diesem Bereich praktisch nur Rotationsteile für die Bearbeitung sorgen.These parts are shown in plan view in Fig. 3 together with the drive means of the various, rotationally driven parts and the storage of these parts. It can be seen that the structure is very compact, and that in this area practically only rotating parts ensure the machining.

Die Positionierung der Öffnungen 28 der beiden Saugzylinder erfolgt durch einen Sensor 29 und eine Kupplung-Brems-Kombination auf einer Antriebsachse 30. Die Drehbewegung dieser Antriebsachse 30 wird auf die anderen drehangetriebenen Teile durch Riemen und Zahnräder übertragen, wie es beim Betrachten der Fig. 3 deutlich wird. Ein Zahnradpaar 31 treibt den Saugzylinder 26 an. Dieser ist an einer Schwinge 32 federnd gelagert, um eine Anpassung an unterschiedliche Umschlagdicken zu gewährleisten.The positioning of the openings 28 of the two suction cylinders takes place by means of a sensor 29 and a clutch-brake combination on a drive axle 30. The rotary movement of this drive axle 30 is transmitted to the other rotary-driven parts by means of belts and gearwheels, as is the case when viewing FIG. 3 becomes clear. A pair of gears 31 drives the suction cylinder 26. This is resiliently mounted on a rocker 32 to ensure adaptation to different envelope thicknesses.

In Transportrichtung des stehend geförderten Umschlages folgen auf die Saugzylinder 25,26 ein Rollenpaar 38 zur Erfassung und zur Entnahme des Umschlaginhaltes.In the direction of transport of the upright-conveyed envelope, a pair of rollers 38 follow for the suction cylinders 25, 26 for recording and for removing the contents of the envelope.

Zwei Schienen 34 dienen dem Abstreifen der Umschlagseiten U und V nach dem Umlenken durch die Saugzylinder und nach Abschaltung des Unterdrucks, ausgelöst durch den Sensor 33 (siehe Fig. 5). Eine vordere Friktionsrolle 35 dient der Auffächerung der einen Umschlagseite U. Eine gegenüber angeordnete zweite Friktionsrolle ist federnd gelagert und zieht den Umschlag an der anderen Umschlagseite V kraftschlüssig in eine Auswurfbahn 37.Two rails 34 serve to strip the cover pages U and V after the deflection by the suction cylinders and after the vacuum has been switched off, triggered by the sensor 33 (see FIG. 5). A front friction roller 35 serves to fan out one cover side U. A second friction roller arranged opposite is spring-mounted and pulls the cover on the other cover side V in a force-locking manner into an ejection path 37.

Der an einer kurzen und einer langen Seite in mehr oder weniger herkömmlicher Weise geöffnete Umschlag wird nach dem Aufstellen durch die Tasche 20 stehend in das dritte Schneidwerk 23 gefördert, um an der noch geschlossenen, dann untenliegenden, langen Kante geöffnet zu werden. Dieses Schneidwerkzeug 23 bildet, wie besonders gut in Fig. 3 erkennbar, eine kompakte Einheit mit der eigentlichen Entnahmevorrichtung.The envelope opened on a short and a long side in a more or less conventional manner is, after being set up, conveyed upright through the pocket 20 into the third cutting mechanism 23, in order to be opened at the long edge which is still closed and then at the bottom. As can be seen particularly well in FIG. 3, this cutting tool 23 forms a compact unit with the actual removal device.

Während des Öffnens des Umschlages an der untenliegenden, langen Kante, wird dieser in die Saugzylinder 25 und 26 gefördert. Die Umschlagseiten U und V werden durch den an den Öffnungen 28 anstehenden Unterdruck mitgenommen und um ca. 90° umgelenkt, bis sie an den Schienen 34 abgestreift werden. Der Umschlaginhalt Z wird gradlinig weiterbewegt.While opening the envelope on the long edge below, it is inserted into the suction cylinders 25 and 26 promoted. The cover pages U and V are entrained by the negative pressure present at the openings 28 and deflected by approximately 90 ° until they are stripped off on the rails 34. The envelope content Z is moved on in a straight line.

Die schneller laufende Friktionsrolle 35 fächert die Umschlagseite U auf. Die andere Friktionsrolle 36 erfaßt die andere Umschlagseite V und bewegt diese in die Auswurfbahn 37. Durch diese Bewegung praktisch des gesamten Umschlages, der an der einen kurzen Seite noch die beiden Seiten U und V verbindet, wirkt diese hintere geschlossene Kante auf den Umschlaginhalt und unterstützt die Transportbewegung durch das Rollenpaar 38. Hierdurch erfolgt praktisch eine automatische Entnahme. Die Aufnahme und Bearbeitung durch entsprechende, anschließende Vorrichtungen ist möglich.The faster running friction roller 35 fans out the cover page U. The other friction roller 36 detects the other cover page V and moves it into the discharge path 37. This movement of practically the entire cover, which still connects the two sides U and V on one short side, acts on the cover contents and supports this closed rear edge the transport movement by the pair of rollers 38. This practically takes place automatically. The recording and processing by appropriate subsequent devices is possible.

Die Innenseite des Umschlages ist durch seine gestreckte Anordnung von der Bedienungsperson deutlich erkennbar, so daß eine optische Kontrolle möglich ist. Diese Kontrolle kann aber auch durch Sensoren automatisch erfolgen. Am Anfang des nächsten Bearbeitungszyklus wird der Umschlag dann von einer Auswerferrolle 39 ausgeworfen.The inside of the envelope is clearly recognizable by the operator due to its stretched arrangement, so that visual inspection is possible. This control can also be carried out automatically by sensors. At the beginning of the next processing cycle, the envelope is then ejected by an ejector roller 39.

In Fig. 4 ist eine Ausführungsform für die Ausbildung der Saugzylinder dargestellt. Bei dieser Ausrührungsform weist jeder Saugzylinder 25,26 zwei Saugabschnitte 25A,25B bzw. 26A, 26B auf. Es ist die Lagerung an entsprechenden Wellen erkennbar. In jedem Saugabschnitt ist eine Saugöffnung 28 vorhanden. Die Versorgung mit Unterdruck der Öffnungen 28 erfolgt über eine Unterdruckquelle 40 und eine drehbare Saugluftdurchführung 41, die eine Verbindung mit einer Bohrung in jeder Antriebswelle herstellt. In Fig. 4 sind ebenfalls die in Fig. 3 dargestellten Zahnräder 31 und entsprechende Antriebsmittel sowie die Lagerung der Teile erkennbar.In Fig. 4 an embodiment for the formation of the suction cylinder is shown. In this embodiment, each suction cylinder 25, 26 has two suction sections 25A, 25B and 26A, 26B. The bearing can be recognized by the corresponding shafts. There is a suction opening 28 in each suction section. The supply of negative pressure to the openings 28 takes place via a negative pressure source 40 and a rotatable suction air duct 41, which establishes a connection to a bore in each drive shaft. In Fig. 4, the gears 31 shown in Fig. 3 and corresponding drive means and the storage of the parts can also be seen.

Weiterhin ist in den Fig. 3 und 4 erkennbar, daß die entsprechenden Zylinder oder Rollen federnd an Schwingen oder Hebeln gelagert sind, um eine Anpassung an unterschiedliche Umschlagdicken zu gewährleisten.3 and 4 that the corresponding cylinders or rollers are resiliently mounted on rockers or levers in order to ensure adaptation to different envelope thicknesses.

In Fig. 3 ist ein Umschlag unmittelbar beim Einlaufen in den Bereich der Saugzylinder dargestellt. In Fig. 4 ist die Bearbeitung weiter fortgeschritten, d.h. der Umschlag verläßt gerade das dritte Schneidwerk 23 und die Umschlagseiten U und V sind bereits umgelenkt, so daß der Umschlaginhalt Z den Bereich der Rollen 38 erreicht hat. Ungefähr diese Stellung ist auch in Fig. 1 angedeutet. Es ist gut erkennbar, daß der Umschlag stehend in den Bereich der Entnahmevorrichtung gefördert wird, und daß der Umschlaginhalt geradlinig gefördert und entnommen wird, so daß eine große Sicherheit besteht, daß der gesamte Inhalt von dem Rollenpaar 38 erfaßt wird. Die Innenseite der umgelenkten Umschlagseiten U und V ist gut erkennbar, so daß ggf. erkannt werden kann, wenn nicht der gesamte Umschlaginhalt gradlinig abgezogen wurde.In Fig. 3 an envelope is shown immediately when entering the area of the suction cylinder. In Fig. 4 the processing has advanced further, i.e. the envelope is just leaving the third cutter 23 and the envelope pages U and V have already been deflected so that the envelope content Z has reached the area of the rollers 38. Approximately this position is also indicated in Fig. 1. It can be clearly seen that the envelope is conveyed upright into the region of the removal device, and that the envelope content is conveyed and removed in a straight line, so that there is a high degree of certainty that the entire contents are gripped by the pair of rollers 38. The inside of the redirected cover pages U and V is clearly visible, so that it can be recognized if the entire envelope content has not been pulled off in a straight line.

In den Figuren 1 und 3 sind noch der Antriebsmotor 42, ein Zugmagnet 43, der Gerätehauptschalter 44, ein Display 45 und eine Zählerrückstelltaste 46 dargestellt. Die Stoppautomatik ist mit 47 bezeichnet. Eine Einzelauslösung 48 ist ebenso vorhanden wie eine stufenlose Geschwindigkeitsregelung 49, eine Statistikeinrichtung mit Drucker 50 und eine verstellbare Seitenführung 51.In Figures 1 and 3, the drive motor 42, a pull magnet 43, the main switch 44, a display 45 and a counter reset button 46 are shown. The automatic stop is designated 47. A single release 48 is also available, as is a stepless speed control 49, a statistical device with printer 50 and an adjustable side guide 51.

Die Vorrichtung ist sehr kompakt aufgebaut. Hierzu trägt die Bau- und Antriebseinheit des dritten Schneidwerkes mit der Entnahmevorrichtung bei.The device is very compact. The construction and drive unit of the third cutting unit with the removal device contributes to this.

Claims (10)

  1. Method for emptying envelopes, which are opened on three edges by slitting, cutting or milling and are conveyed upright to a removal device, characterized in that the envelopes are opened on one short edge and two long edges and standing on one long edge and with the unopened, short edge at the rear in the conveying direction, are fed into the removal device (25,26), in which the two envelope sides (UV) only interconnected at one short edge are drawn off laterally to the left and right, the content (Z) being linearly conveyed on and therefore removed.
  2. Method according to claim 1, characterized in that the envelopes are firstly opened on one short and one long edge and are then in the upright position with the still closed, second long edge directed downwards opened at the said edge and subsequently fed to the removal device.
  3. Apparatus for emptying envelopes, with a device for opening the envelopes on three edges by slitting, cutting or milling and a device for conveying the opened envelopes standing on one long edge into a removal device having a draw-out mechanism, which draws off to the left and right the two envelope sides, characterized in that the envelopes opened on one short and two long edges can be conveyed standing on one of the long edges and with the unopened, short edge at the rear in the conveying direction, into the removal device and that the draw-off mechanism (25,26) laterally draws off to the left and right the two envelope sides (UV) interconnected by one short edge in such a way that the content (Z) with the support of the rear, unopened short edge is linearly conveyed away and removed.
  4. Apparatus according to claim 3, characterized in that the envelopes initially opened on one short and one long edge can be conveyed standing on the still closed second long edge to a cutting, slitting or milling mechanism (23) for opening the second long edge.
  5. Apparatus according to claim 4, characterized in that the draw-off device is formed by two standing, rotated suction cylinders (25,26), whereof in each case one is positioned on one side of the opened envelope and exerts suction, laterally deflects and draws along the adjacent envelope side (U or V).
  6. Apparatus according to claim 5, characterized in that the suction action of the suction cylinders (25,26) is maintained until there has been an approximately 90° deflection of the adjacent envelope side (U or V) and for controlling the suction action at the envelope entrance and at the 90° deflection point sensors (27,33) are provided.
  7. Apparatus according to claims 5 or 6, characterized in that one suction cylinder (26) is resiliently mounted for adapting to the envelope thickness.
  8. Apparatus according to claims 5,6 or 7, characterized in that for fanning out one deflected envelope side (U), a first friction roll (35) and for the frictional ejection of the other deflected envelope side (V) a second, resiliently engaging friction roll (36) is provided.
  9. Apparatus according to one or more of the claims 5 to 8, characterized in that in continuation of the linear removal movement of the content (Z) behind the suction cylinders (25,26) are provided removal rolls (38) for the content.
  10. Apparatus according to one or more of the claims 5 to 9, characterized in that each suction cylinder (25,26) has two superimposed suction sections (25A,25B;26A,26B), whereof each is provided with a suction opening (28) connected to a vacuum source (40).
EP93103016A 1992-04-09 1993-02-26 Method and apparatus for removing contacts of envelopes Expired - Lifetime EP0565837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4211885A DE4211885C2 (en) 1992-04-09 1992-04-09 Method and device for emptying envelopes
DE4211885 1992-04-09

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EP0565837A1 EP0565837A1 (en) 1993-10-20
EP0565837B1 true EP0565837B1 (en) 1994-11-09

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EP (1) EP0565837B1 (en)
DE (2) DE4211885C2 (en)

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Also Published As

Publication number Publication date
DE4211885C2 (en) 1994-07-28
EP0565837A1 (en) 1993-10-20
US5440861A (en) 1995-08-15
DE4211885A1 (en) 1993-10-14
DE59300024D1 (en) 1994-12-15

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