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WO1990011953A1 - Envelope feeder with a vacuum-operated suction drum - Google Patents

Envelope feeder with a vacuum-operated suction drum Download PDF

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Publication number
WO1990011953A1
WO1990011953A1 PCT/CH1990/000084 CH9000084W WO9011953A1 WO 1990011953 A1 WO1990011953 A1 WO 1990011953A1 CH 9000084 W CH9000084 W CH 9000084W WO 9011953 A1 WO9011953 A1 WO 9011953A1
Authority
WO
WIPO (PCT)
Prior art keywords
envelope
conveyor belt
stack
feeder according
envelopes
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.)
Ceased
Application number
PCT/CH1990/000084
Other languages
German (de)
French (fr)
Inventor
Reinhard Stenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1990011953A1 publication Critical patent/WO1990011953A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6654—Advancing articles in overlapping streams changing the overlapping figure
    • B65H29/6663—Advancing articles in overlapping streams changing the overlapping figure reversing the overlapping figure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/10—Suction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
    • B65H2301/42322—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile

Definitions

  • the envelope feeder with vacuum suction drum newly invented for feeding printing machines, solves the problem of the previous envelope feeders with a vacuum chamber that require specially manufactured conveyor belts. These conveyor belts must be perforated. They are not available as standard, which is why commercially available conveyor belts have to be perforated with laborious work.
  • the clutch device of today's envelope feeders consists of a vacuum chamber, a perforated conveyor belt and an adjustable retention barrier for the fine adjustment of the clutch.
  • the stack of envelopes lies above the vacuum chamber which is partially covered by the perforated conveyor belt.
  • One envelope after the other is sucked onto the conveyor belt by the negative pressure, pulled away from under the refill stack and fed to the supply stack of the printing press.
  • a retaining barrier which is adjustable in the running direction of the conveyor belt and in height is set such that the desired scaling is achieved depending on the envelopes lying in the refill stack.
  • the newly invented envelope feeder is a significant further development of the previous system.
  • the use of a rotating vacuum suction drum instead of the standing vacuum chamber eliminates the problem of producing a perforated conveyor belt. Show it:
  • Fig. 3 Schematic diagram of the envelope feeder with
  • Vacuum suction drum 1 Fig. 4 Top view of the flaking device
  • the task of the envelope feeder is to continuously supply the supply stack 8 (FIG. 3) with envelopes 1 from the refill stack 11 (FIG. 3).
  • the covers 13 of the envelopes (FIG. 1) are not pushed into one another when pushed into the supply stack 8 (FIG. 3), because the loading device of the printing press, usually a suction arm, may only Lift one envelope 1 per transport route without other envelopes being dragged along or even fluttering in an uncontrolled manner in the loading area of the printing press.
  • Fig. 1b shows this clearly.
  • the envelopes were pushed into each other because the overlap spacing 5 of the individual envelope flaps 13 (FIG. 1) was too large when being pushed.
  • the envelopes must be pulled out from under the refill stack 11 in such a way that the envelope flaps 13 overlap (FIG. 1c), i.e. the scaling distance must not be too large. This ensures that the envelopes can be pushed cleanly (Fig. 1d).
  • the distance between the individual envelopes the so-called shingling distance 5 (FIG. 1c)
  • This scaling distance 5 can be changed by sliding the vacuum drum 3 or the refill stack 11 together with the retention barrier 6. If the suction drum 3 (FIG. 2c) has sucked a envelope 1 into the vacuum suction drum 3 rotating synchronously with the conveyor belt 4, it conveys it onto the conveyor belt 4, which takes over the further conveyance. After the first envelope the next one is sucked in, the process repeats itself, precisely defined and reproducible.
  • the vacuum suction drum is available in two basic versions. In one case (Fig. 4a) it is provided with suction holes 15 over the entire circumference. In the other case (Fig. 4a) the holes are not distributed over the entire circumference, but only in segments. This segment suction drum 18 is therefore referred to as suction segments 19 and blind segments 20.
  • the new device for producing a shingling (Fig. 4) is equipped with standard conveyor belts. These run past on both sides of the suction drum 3. Instead of the earlier wide belt, several narrow belts 16 are now used, ideally four. This saves on the one hand tape material (gaps 17), on the other hand narrow tapes have proven to be less of a mess, and the required tape tension is also lower. However, this also has the further important advantage that the strips no longer have to be perforated.
  • the task of the second conveyor belt 10 is to turn the envelopes in such a way that they are pushed in the correct position under the appel 8 stock (FIG. 3).
  • the barrier 6 is adjustable in height. This ensures that, depending on the type of envelope, not too many envelopes are drawn in or that the removal is impeded.
  • the hold-down roller 7 presses out any air that may be present in the envelopes so that the paper does not flutter during printing. This prevents blurred or blurred printing.
  • the critical heights of the refill stack 11 and the stock stack 8 are monitored with light barriers; the The replenishment speed of the conveyor belts is controlled in this way and the refilling of the refill stack, which is necessary from time to time, is indicated optically and / or acoustically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

The envelope feeder with a rotating vacuum-operated suction drum (3) is a further development of the envelope feeder with an underpressure chamber and perforated conveyor belt. The rotating vacuum drum (3) directly holds the envelopes (1). Standard commercial (i.e. unperforated) conveyor belts (16) running on both sides of the drum convey the envelopes further. The vacuum drum (3) may have suction apertures (15) over its entire periphery or over segments thereof only. The pushing distance (5) is set by varying the distance between the vacuum drum and the feed stack. The use of a rotating vacuum drum eliminates the need for perforated conveyor belts.

Description

C O U V E R T A N L E G E R C O U V E R T A N L E G E R

M I TWITH

V A K U U M S A U G T R O M M E LV A K U U M S A U G T R O M M E L

Der für das Beschicken von Druckmaschinen neu erfundene Cou- vertanleger mit Vakuumsaugtrommel löst das Problem der bis¬ herigen Couvertanleger mit Unterdruckkammer, die speziell gefertigte Transportbänder benötigen. Diese Transportbänder müssen perforiert sein. Sie sind nicht standardmässig er¬ hältlich, weshalb handelsübliche Transportbänder in mühsamer Arbeit perforiert werden müssen.The envelope feeder with vacuum suction drum, newly invented for feeding printing machines, solves the problem of the previous envelope feeders with a vacuum chamber that require specially manufactured conveyor belts. These conveyor belts must be perforated. They are not available as standard, which is why commercially available conveyor belts have to be perforated with laborious work.

Der Stand der Technik ist der, dass die Schuppungseinrich¬ tung der heutigen Couvertanleger aus einer Unterdruckkammer, einem gelochten Transportband und einer verstellbaren Rück- haltebarriere für die Feineinstellung der Zwangsschuppung besteht.The state of the art is that the clutch device of today's envelope feeders consists of a vacuum chamber, a perforated conveyor belt and an adjustable retention barrier for the fine adjustment of the clutch.

Der Couvertstapel liegt über der mit dem gelochten Trans¬ portband teilweise abgedeckten Unterdruckkammer. Durch den Unterdruck wird ein Couvert nach dem anderen auf das Trans¬ portband gesaugt, unter dem Nachfüllstapel weggezogen und dem Vorratsstapel der Druckmaschine zugeführt. Eine in Lauf¬ richtung des Transportbandes und in der Höhe verstellbare Rückhaltebarriere wird so eingestellt, dass abhängig von den im Nachfüllstapel liegenden Couverts die gewünschte Schup¬ pung erreicht wird.The stack of envelopes lies above the vacuum chamber which is partially covered by the perforated conveyor belt. One envelope after the other is sucked onto the conveyor belt by the negative pressure, pulled away from under the refill stack and fed to the supply stack of the printing press. A retaining barrier which is adjustable in the running direction of the conveyor belt and in height is set such that the desired scaling is achieved depending on the envelopes lying in the refill stack.

Der neu erfundene Couvertanleger ist eine bedeutende Weiter¬ entwicklung des bisherigen Systems. Durch die Verwendung einer rotierenden Vakuumsaugtrommel anstelle der stehenden Unterdruckkammer entfällt das Problem der Herstellung eines gelochten Transportbandes. Es zeigen:The newly invented envelope feeder is a significant further development of the previous system. The use of a rotating vacuum suction drum instead of the standing vacuum chamber eliminates the problem of producing a perforated conveyor belt. Show it:

Fig. 1 : Prinzip der SchuppungFig. 1: Principle of scaling

Fig. 2: Wirkungsweise der VakuumsaugtrommelFig. 2: Operation of the vacuum suction drum

Fig. 3: Prinzipschema des Couvertanlegers mitFig. 3: Schematic diagram of the envelope feeder with

Vakuumsaugtromme1 Fig. 4: Draufsicht auf SchuppungseinrichtungVacuum suction drum 1 Fig. 4: Top view of the flaking device

Die Aufgabe des Couvertanlegers besteht darin, den Vorrats- εtapel 8 (Fig. 3) kontinuierlich mit Couverts 1 aus dem Nachfüllstapel 11 (Fig. 3) zu versorgen. Dabei muss beachtet werden, dass die Deckel 13 der Couverts (Fig. 1) beim Nach¬ schieben in den Vorratsstapel 8 (Fig. 3) nicht ineinander geschoben werden, denn der Beschickungsapparat der Druck¬ maschine, in der Regel ein Saugarm, darf nur ein Couvert 1 pro Transportweg anheben, ohne dass andere Couverts mitge¬ zogen oder gar unkontrolliert im Beschickungsbereich der Druckmaschine herumflattern. Fig. 1b zeigt dies anschaulich. Hier wurden die Umschläge ineinander geschoben, weil der Schuppungsabstand 5 der einzelnen Couvertklappen 13 (Fig. 1) beim Nachschieben zu gross war. Um das zu verhindern, müssen die Couverts so unter dem Nachfüllstapel 11 weggezogen wer¬ den, dass die Couvertklappen 13 sich überlappen (Fig. 1c), d.h. die Schuppungsdistanz darf nicht zu gross sein. Dadurch ist gewährleistet, dass die Couverts sauber nachgeschoben werden können (Fig. 1d).The task of the envelope feeder is to continuously supply the supply stack 8 (FIG. 3) with envelopes 1 from the refill stack 11 (FIG. 3). It should be noted here that the covers 13 of the envelopes (FIG. 1) are not pushed into one another when pushed into the supply stack 8 (FIG. 3), because the loading device of the printing press, usually a suction arm, may only Lift one envelope 1 per transport route without other envelopes being dragged along or even fluttering in an uncontrolled manner in the loading area of the printing press. Fig. 1b shows this clearly. Here the envelopes were pushed into each other because the overlap spacing 5 of the individual envelope flaps 13 (FIG. 1) was too large when being pushed. To prevent this, the envelopes must be pulled out from under the refill stack 11 in such a way that the envelope flaps 13 overlap (FIG. 1c), i.e. the scaling distance must not be too large. This ensures that the envelopes can be pushed cleanly (Fig. 1d).

Je nach Format der Couverts 1 und der Klappen 13 (grosse dreieckige Klappen oder schmale Klappen bei Selbstklebe- couverts) muss der Abstand der einzelnen Couverts vonein¬ ander, die sogenannte Schuppungsdistanz 5 (Fig. 1c), ein¬ gestellt werden. Diese Schuppungsdistanz 5 kann durch Ver¬ schieben der Vakuumtrommel 3 oder des Nachfüllstapels 11 samt Rückhaltebarriere 6 verändert werden. Hat die Saug¬ trommel 3 (Fig. 2c) die sich mit dem Transportband 4 syn¬ chron drehende Vakuumsaugtrommel 3 ein Couvert 1 angesaugt, so befördert sie es auf das Transportband 4, welches die weitere Beförderung übernimmt. Nach dem ersten Couvert wird das nächste angesaugt, der Vorgang wiederholt sich, und zwar exakt definiert und reproduzierbar.Depending on the format of the envelopes 1 and the flaps 13 (large triangular flaps or narrow flaps in the case of self-adhesive envelopes), the distance between the individual envelopes, the so-called shingling distance 5 (FIG. 1c), must be set. This scaling distance 5 can be changed by sliding the vacuum drum 3 or the refill stack 11 together with the retention barrier 6. If the suction drum 3 (FIG. 2c) has sucked a envelope 1 into the vacuum suction drum 3 rotating synchronously with the conveyor belt 4, it conveys it onto the conveyor belt 4, which takes over the further conveyance. After the first envelope the next one is sucked in, the process repeats itself, precisely defined and reproducible.

Die Vakuumsaugtrommel ist in zwei Grundversionen auführbar. Im einen Fall (Fig. 4a) ist sie über den ganzen Umfang mit Ansaugbohrungen 15 versehen. Im anderen Fall (Fig. 4a) sind die Bohrungen nicht durchgehend über dem Umfang verteilt, sondern nur in Segmenten. Bei dieser Segmentsaugtrommel 18 spricht man deshalb von Saugsegmenten 19 und Blindsegmenten 20.The vacuum suction drum is available in two basic versions. In one case (Fig. 4a) it is provided with suction holes 15 over the entire circumference. In the other case (Fig. 4a) the holes are not distributed over the entire circumference, but only in segments. This segment suction drum 18 is therefore referred to as suction segments 19 and blind segments 20.

Die neue Einrichtung zur Herstellung einer Schuppung (Fig. 4) wird mit handelsüblichen Transportbändern bestückt. Diese laufen auf beiden Seiten der Saugtrommel 3 vorbei. Anstelle des früheren breiten Bandes werden nun mehrere schmale Bän¬ der 16 eingesetzt, im Idealfall vier. Dadurch spart man einerseits Bandmaterial (Zwischenräume 17), andererseits laufen schmale Bänder erwiesener assen weniger aus der Bahn, zudem ist auch die benötigte Bandspannung kleiner. Damit erreicht man aber auch den weiteren wichtigen Vorteil, dass die Bänder nicht mehr perforiert werden müssen. Die Aufgabe des zweiten Transportbandes 10 ist es, die Cou¬ verts so zu wenden, dass sie in der richtigen Lage unter den Vorrates appel 8 (Fig. 3) geschoben werden.The new device for producing a shingling (Fig. 4) is equipped with standard conveyor belts. These run past on both sides of the suction drum 3. Instead of the earlier wide belt, several narrow belts 16 are now used, ideally four. This saves on the one hand tape material (gaps 17), on the other hand narrow tapes have proven to be less of a mess, and the required tape tension is also lower. However, this also has the further important advantage that the strips no longer have to be perforated. The task of the second conveyor belt 10 is to turn the envelopes in such a way that they are pushed in the correct position under the appel 8 stock (FIG. 3).

Die weiteren Funktionen der bisherigen Couvertanleger werden voll in den neuen Couvertanleger mit Vakuumsaugtrommel inte¬ griert:The other functions of the previous envelope feeder are fully integrated in the new envelope feeder with vacuum suction drum:

- Die Barriere 6 ist in der Höhe verstellbar. Damit wird sichergestellt, dass je nach Couverttyp nicht zu viele Couverts nachgezogen werden oder das Wegziehen behindert wird.- The barrier 6 is adjustable in height. This ensures that, depending on the type of envelope, not too many envelopes are drawn in or that the removal is impeded.

- Die Niederhaltewalze 7 (Fig. 3) presst eventuell in den Couverts vorhandene Luft heraus, damit das Papier während dem Bedrucken nicht flattert. Das verhindert eine verschwommene oder verwischte Bedruckung.- The hold-down roller 7 (FIG. 3) presses out any air that may be present in the envelopes so that the paper does not flutter during printing. This prevents blurred or blurred printing.

- Die kritischen Höhen des Nachfüllstapels 11 und des Vorratsstapels 8 werden mit Lichtschranken überwacht; die Nachschubgeschwindigkeit der Transportbänder wird so gesteuert und das von Zeit zu Zeit nötige Nachfüllen des Nachfüllstapels wird optisch und/oder akustisch angezeigt. - The critical heights of the refill stack 11 and the stock stack 8 are monitored with light barriers; the The replenishment speed of the conveyor belts is controlled in this way and the refilling of the refill stack, which is necessary from time to time, is indicated optically and / or acoustically.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS 1. Couvertanleger zum kontinuierlichen Zuführen von Couverts (1 ) in Form einer Zwangsschuppung in einen Vorrats¬ stapel (8) einer Druckereimaschine, bei welchem zur Förde¬ rung der Couverts (1) von einer Aufnahmeposition für einen Nachfüllcouvertstapel (11) zum Vorratsstapel (8) eine Trans¬ porteinrichtung und unterhalb der Aufnahmeposition eine Saugeinrichtung zum Mitnehmen von Couverts (1) von der Un¬ terseite des Nachfullcouvertstapels (11) vorgesehen sind und über der Transporteinrichtung ein Abstreifer (6) zum Zurück¬ halten des Nachfullcouvertstapels (11) angeordnet ist, da¬ durch gekennzeichnet, dass unterhalb der Aufnahmeposition eine Saugtrommel (3) angeordnet ist, welche bei Erzeugen von Unterdruck in derselben Couverts (1) von der Unterseite des Nachfullcouvertstapels (11) ansaugt und an mindestens ein Transportband (4) übergibt.1. Envelope feeder for the continuous feeding of envelopes (1) in the form of a forced clutch into a storage stack (8) of a printing machine, in which for conveying the envelopes (1) from a receiving position for a refill envelope stack (11) to the storage stack (8 ) a transport device and a suction device for taking envelopes (1) from the underside of the refill envelope stack (11) are provided below the receiving position and a scraper (6) for holding back the refill envelope stack (11) is arranged above the transport device , characterized by the fact that a suction drum (3) is arranged below the receiving position and, when negative pressure is generated in the same envelope (1), sucks it in from the underside of the refill envelope stack (11) and transfers it to at least one conveyor belt (4). 2. Couvertanleger nach Anspruch 1 , dadurch gekenn¬ zeichnet, dass die Saugtrommel (3) auf ihrem gesamten Man¬ telumfang perforiert ist.2. envelope feeder according to claim 1, characterized gekenn¬ characterized in that the suction drum (3) is perforated on its entire circumference. 3. Couvertanleger nach Anspruch 1 , dadurch gekenn¬ zeichnet, dass die Saugtrommel (3) in ihrer Achsrichtung gesehen auf ihrem Mantelumfang abwechselnd reihenformig angeordnet Perforierungen als Saugsegmente (19) und per¬ forationsfreie Blindsegmente (20) besitzt.3. envelope feeder according to claim 1, characterized gekenn¬ characterized in that the suction drum (3) seen in its axial direction on its circumference circumferentially alternately arranged perforations as suction segments (19) and perforation-free blind segments (20). 4. Couvertanleger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass an jeder Stirnseite der Saug¬ trommel (3) mindestens ein Transportband (4) vorbeiläuft, welche das jeweils durch die Saugtrommel (3) vom Nachfüll¬ couvertstapel (11) abgezogene Couvert (1) übernehmen.4. Envelope feeder according to one of claims 1 to 3, characterized in that at each end face of the suction drum (3) at least one conveyor belt (4) passes, which in each case by the suction drum (3) deducted from the refill stack of envelopes (11) Accept envelope (1). 5. Couvertanleger nach Anspruch 4, dadurch gekenn¬ zeichnet, dass die Saugtrommel (3) mit ihrem Mantel minde¬ stens in die Ebene der Transportbänder (4) hineinragt. 5. envelope feeder according to claim 4, characterized gekenn¬ characterized in that the suction drum (3) projects with its jacket at least in the plane of the conveyor belts (4). 6. Couvertanleger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Saugtrommel (3) in Trans¬ portrichtung der Couverts (1 ) gesehen hin- und herverschieb¬ bar angeordnet, ist.6. Envelope feeder according to one of claims 1 to 4, characterized in that the suction drum (3) in the transport direction of the envelopes (1) seen back and forth is arranged bar. 7. Couvertanleger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Saugtrommel (3) um ihre Längsachse drehbar ist.7. envelope feeder according to one of claims 1 to 6, characterized in that the suction drum (3) is rotatable about its longitudinal axis. 8. Couvertanleger nach Anspruch 7, dadurch gekenn¬ zeichnet, dass die Saugtrommel (3) synchron mit dem minde¬ stens einen Transportband (4) antreibbar ist.8. envelope feeder according to claim 7, characterized gekenn¬ characterized in that the suction drum (3) synchronously with the at least one conveyor belt (4) can be driven. 9. Couvertanleger nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Abstand des Abstreifers (6) vom Transportband (4) einstellbar ist.9. envelope feeder according to one of claims 1 to 8, characterized in that the distance of the scraper (6) from the conveyor belt (4) is adjustable. 10. Couvertanleger nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Transportband (4) zusammen mit einem über demselben befindlichen zweiten Transportband (10) um eine Umlenkrolle (21) herumgeführt ist, um die auf¬ geschuppt auf dem Transportband (4) transportierten Couverts (1) umgewendet auf das zweite Transportband (10) zu überge¬ ben, welches die Couverts (1) unter den Vorratsstapel (8) schiebt.10. Envelope feeder according to one of claims 1 to 9, characterized in that the conveyor belt (4) together with a second conveyor belt (10) located above the same is guided around a deflection roller (21), in order to scale on the conveyor belt (4th ) transported envelopes (1) turned over onto the second conveyor belt (10), which pushes the envelopes (1) under the supply stack (8). AA 11. Couvertanleger nach Anspruch 10, dadurch gekenn¬ zeichnet, dass in Förderrichtung des mindestens einen Trans¬ portbandes (4) gesehen eine vordere Umlenkrolle (14) für das zweite Transportband (10) unmittelbar hinter dem Abstreifer (6) angeordnet ist.11. envelope feeder according to claim 10, characterized gekenn¬ characterized in that seen in the conveying direction of the at least one conveyor belt (4) a front deflection roller (14) for the second conveyor belt (10) is arranged directly behind the stripper (6). 12. Couvertanleger nach Anspruch 10, dadurch gekenn¬ zeichnet, dass über dem zweiten Transportband (10) vor dem Vorratsstapel (8) eine Luftauspresswalze (7) vorgesehen ist.12. Envelope feeder according to claim 10, characterized gekenn¬ characterized in that an air squeezing roller (7) is provided above the second conveyor belt (10) in front of the supply stack (8). 13. Couvertanleger nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass Überwachungsvorrichtungen zum Überwachen der Höhe des Nachfullcouvertstapels (11) und des Vorratsstapels (8) vorgesehen sind. 13. envelope feeder according to one of claims 1 to 12, characterized in that monitoring devices for Monitoring the height of the refill envelope stack (11) and the supply stack (8) are provided.
PCT/CH1990/000084 1989-04-03 1990-04-02 Envelope feeder with a vacuum-operated suction drum Ceased WO1990011953A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH121089 1989-04-03
CH1210/89-7 1989-04-03

Publications (1)

Publication Number Publication Date
WO1990011953A1 true WO1990011953A1 (en) 1990-10-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959030A1 (en) * 1998-05-13 1999-11-24 Gunther De Beleyr Device for supplying thin objects to a conveying device in an overlapping manner
EP0857674A3 (en) * 1997-02-11 2000-03-29 Gämmerler AG Apparatus for forming a stream of uniformly overlapped printed products

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969125C (en) * 1953-12-08 1958-05-08 Dux Ab Sheet feeder with rotating suction drum
US4062532A (en) * 1976-04-23 1977-12-13 Koppers Company, Inc. Apparatus for feeding and transporting paperboard blanks
WO1989004805A1 (en) * 1987-11-27 1989-06-01 Reinhard Stenz Envelope feeder with adjustable constant overlap

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969125C (en) * 1953-12-08 1958-05-08 Dux Ab Sheet feeder with rotating suction drum
US4062532A (en) * 1976-04-23 1977-12-13 Koppers Company, Inc. Apparatus for feeding and transporting paperboard blanks
WO1989004805A1 (en) * 1987-11-27 1989-06-01 Reinhard Stenz Envelope feeder with adjustable constant overlap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857674A3 (en) * 1997-02-11 2000-03-29 Gämmerler AG Apparatus for forming a stream of uniformly overlapped printed products
EP0959030A1 (en) * 1998-05-13 1999-11-24 Gunther De Beleyr Device for supplying thin objects to a conveying device in an overlapping manner

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