EP0176789B1 - Method and device for changing web rolls in connection with packaging machines - Google Patents

Method and device for changing web rolls in connection with packaging machines Download PDF

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Publication number
EP0176789B1
EP0176789B1 EP85111098A EP85111098A EP0176789B1 EP 0176789 B1 EP0176789 B1 EP 0176789B1 EP 85111098 A EP85111098 A EP 85111098A EP 85111098 A EP85111098 A EP 85111098A EP 0176789 B1 EP0176789 B1 EP 0176789B1
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EP
European Patent Office
Prior art keywords
sheet
rollers
running
sheets
draw
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
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EP85111098A
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German (de)
French (fr)
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EP0176789A2 (en
EP0176789A3 (en
Inventor
Heinz Focke
Kurt Liedtke
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Focke and Co GmbH and Co KG
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Focke and Co GmbH and Co KG
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Publication of EP0176789A2 publication Critical patent/EP0176789A2/en
Publication of EP0176789A3 publication Critical patent/EP0176789A3/en
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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
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/20—Cutting-off the expiring web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/462—Plurality of work feed means in separate paths
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/541—Actuation of tool controlled in response to work-sensing means
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/889—Tool with either work holder or means to hold work supply
    • Y10T83/896—Rotatable wound package supply
    • Y10T83/902—Plural supply sources

Definitions

  • the invention relates to a method for changing bobbins according to the preamble of claim 1 and a device for feeding material webs according to the preamble of claim 3.
  • the object of the present invention is to improve the method mentioned at the outset and a corresponding device in such a way that a connection of the front end of a connecting track to the outlet end of a running track is ensured without overlap, without the working speed of the packaging machine being reduced.
  • the device shown is part of a packaging machine, in particular for the production of hinged boxes, or is assigned to the latter.
  • the packaging machine or a punching unit for the production of (collar) blanks is continuously supplied with a material web of thin cardboard or the like as a runway 10 at high conveying speed.
  • This runway 10 is drawn off from a first reel 11, which in the present case is almost used up.
  • a new bobbin 12 or its connecting web 13 is introduced into the conveying flow and fed to the packaging machine.
  • a bobbin exchange can then take place in the area of the first bobbin 11, essentially only a cylindrical (cardboard) core 14 having to be pulled off a pivot pin 15 of a support device for the bobbins 11 and 12, which is not shown in detail.
  • the "active" run-off track 10 is conveyed by pull rollers, namely pulled off the bobbin 11.
  • a pair of main pulling rollers 16, 17 is arranged towards the packaging machine and is arranged at the outlet end of a conveyor track 18 for the material webs, which in the present case rises obliquely.
  • two pairs of pulling and pushing rollers 19 and 20, each for one of the material tracks 10, 13, are arranged.
  • these pairs of pulling rollers each consist of a fixed pulling and pushing roller 19 or 20 in close proximity to one another and a movable, smaller counter-roller 21 which alternatively is delivered to one or the other pulling and pushing roller 19, 20 and on its circumference or on one of the material webs 10, 13 is pressed.
  • the train and push rollers 19, 20 with counter roller 21 are arranged on the introduction side of the conveyor track 18, the counter roller 21 always being movable between the material tracks 10, 13.
  • the two pulling and pushing rollers 19, 20 are each assigned a deflection roller 22 and 23 for the material web 10, 13 in front in the conveying direction. These deflecting rollers 22, 23 ensure that the material webs 10, 13 are each at a certain angle to the train. and push rollers 19, 20 are guided.
  • the conveyor track 18 is defined in a region facing the main drawing rollers 16, 17 by fixed lateral or upper and lower guide walls 24, 25. These are arranged converging in the direction of the main drawing rollers 16, 17.
  • the guide walls 24, 25 end immediately adjacent to the circumference of the main drawing rollers 16, 17, in part adapting to the arcuate course of the runway 10.
  • the conveying path 18 is delimited on the outside by outer walls 26, 27, which are also arranged to converge slightly in the conveying direction and each have suction bores 28 on the inside. These are connected to a vacuum source, not shown in detail, and are controlled so that a front end 29 of the connecting track 13 is fixed in a standby position by the suction bores 28 on the associated outer wall 26 and 27, respectively.
  • a middle piece 30 is arranged between the outer walls 26 and 27 and the two material webs 10, 13 and limits a relatively narrow guide gap for the material webs 10, 13 with respect to the outer walls 26, 27.
  • the central piece 30 On the entry side of the conveyor track 18, the central piece 30 is followed by guide walls 31 and 32 assigned to the material tracks 10, 13, which extend as far as the deflection rollers 22 and 23 and serve to guide the material tracks 10, 13 in this area.
  • the aforementioned guide walls 31, 32 are provided with recesses for the passage of the counter roller 21.
  • a cutting device 33 is arranged. This has the task of separating an end piece of the runway 10 from the latter when the bobbin 11 in question has been used up.
  • the cutting device 33 is controlled by control elements, in the present case by optical sensors 34, 35, which in each case monitor the end of the runway 10 at corresponding points, namely directly adjacent to the deflecting rollers 22, 23.
  • the end piece of the run-off track 10 separated by the cutting device 33 is accordingly relatively short.
  • the connecting path 13 to be inserted into the conveying flow in the correct position lies with its front ends 29 in the ready position during the conveyance of the runway 10 in the conveying path 18, namely at a stop 36.
  • the stop 36 becomes out of the blocking position moved out for the connecting web 13 and at the same time driven in the conveying direction by the associated pulling and pushing roller 20 in connection with the counter roller 21.
  • the movement of the individual organs is coordinated with one another in such a way that the front end 29 of the connecting track 13 follows the running end of the drain track 10 directly, namely with a very small distance. As soon as the front end 29 has reached the main drawing rollers 16, 17, the conveyance is taken over by them.
  • the pulling and pushing rollers 19, 20 and the counter roller 21 are mounted on a common, approximately T-shaped roller carrier 37, the counter roller 21 indirectly via a (two-armed) actuating lever 38.
  • This is connected to the roller carrier 37 via a rotary bearing 39.
  • an actuating element acts on the actuating lever 38, in the present case a pressure medium cylinder 40 which can be acted upon with pressure medium in both directions of movement of a piston rod 41.
  • the counter-roller 21 is fed to one or the other pulling and pushing roller 19, 20 by pivoting movements of the actuating lever 38.
  • the cutting device 33 is designed as a rotary cutter.
  • a cylindrical cutting knife 46 is rotatably mounted in a cylindrical knife housing 45.
  • a reciprocating rotary movement along a limited angle of rotation takes place via the link 43.
  • the cutting knife 46 is designed or the through slot 47 is dimensioned on the input side in such a way that a peripheral region of the cutting knife 46 serves as a stop for the front end 29 of the connecting track 13 which is in the standby position.
  • the through-slot 47 is formed in the entry area in such a way that in the end positions of the cutting knife 46 a circumferential area adjoining the cutting edge 48 or 49 acts as a stop 36.
  • the front end 29 of the connecting track 13 is practically in the cutting plane.
  • the relative position of the through slot 47 with respect to the exit recess 54 is selected so that the respective continuous runway 10 can be freely conveyed through the knife housing 45 without hindrance.
  • the main pulling rollers 16, 17 and the pulling and pushing rollers 19, 20 are in geared connection with one another.
  • the (larger) main drawing roller 17 is continuously driven by a motor, not shown in the drawings.
  • a toothed belt wheel 56 of the main pulling roller 17 is connected to a corresponding toothed belt wheel 57 of the pulling and pushing roller 20. This in turn is in drive connection with the pulling and pushing roller 19.
  • the dimensions of the toothed belt wheels 56 and 57 and the diameter of the main pulling roller 17 and the pulling and pushing roller 20 are selected so that the pulling and pushing rollers 19, 20 are driven at a slightly lower speed than the main pulling roller 17.
  • the diameter of the pulling and pushing rollers 19, 20 is 0.6 mm smaller than that of the main pulling roller 17. This ensures that the material web 10, 13 is always transported in the region of the conveyor path 18 under slight tension, in any case without creases. A slippage of the material web 10, 13 or an overvoltage is avoided in that the main pulling roller 17 or the toothed belt wheel 56 associated therewith is equipped with a freewheel 58 acting in the corresponding direction.
  • the slightly higher speed of the main traction rollers 16, 17 only comes into effect during the short moment after an end piece of the run-off track 10 has been severed, so that it is transported slightly faster than the front end 29 of the subsequent connecting track 13.
  • the main pull rollers 16 and 17 and the pull and push rollers 19 and 20 rotate continuously.
  • the conveying effect for the material web in the area of the pulling and pushing rollers 19, 20 is effected exclusively by the abutment of the counter roller 21.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Medicinal Preparation (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Wechseln von Bobinen gemäß dem Oberbegriff des Patentanspruchs 1 sowie eine Vorrichtung zum Zuführen von Materialbahnen gemäß dem Oberbegriff des Patentanspruchs 3.The invention relates to a method for changing bobbins according to the preamble of claim 1 and a device for feeding material webs according to the preamble of claim 3.

Der Wechsel von üblicherweise großvolumigen Bobinen (Rollen) von Verpackungsmaterial in Verbindung mit Verpakkungsmaschinen ist von besonderer Bedeutung wegen der Leistungsfähigkeit der Verpackungsmaschinen und des demzufolge hohen Materialverbrauchs. Besonders schwierig ist der Anschluß einer neuen Bobine (Anschlußbahn) an das Ende (Ablaufende) der verbrauchten Materialbahn (Ablaufbahn). Ziel der Bemühungen ist es, den Bobinenwechsel, insbesondere den Anschluß der Materialbahnen, störungsfrei und ohne Stillstand der Verpackungsmaschine durchzuführen.The change from usually large-volume bobbins (rolls) of packaging material in connection with packaging machines is of particular importance because of the performance of the packaging machines and the consequent high material consumption. It is particularly difficult to connect a new bobbin (connecting lane) to the end (drain end) of the used material web (drain lane). The aim of the efforts is to carry out the reel change, in particular the connection of the material webs, without problems and without the packaging machine being at a standstill.

Aus der US-A-3 064 869 ist eine Zuführung für miteinander zu verbindende Verpackungsmaterialbahnen bekannt. Dort werden die Materialbahnen durch Druckorgane überlappend festgeklemmt und anschließend durch Verschweißen miteinander verbunden. Während des Verbindungsvorgangs tritt ein zeitweiliger vollkommener Stillstand ein.From US-A-3 064 869 a feed for packaging material webs to be joined together is known. There, the material webs are clamped overlapping by pressure elements and then connected to one another by welding. During the connection process there is a temporary complete standstill.

Auch aus der US-A-2 613 042 ist eine Vorrichtung zum Zusammenführen von Materialbahnen bekannt, bei der die neue Anschlußbahn mit der ablaufenden Bahn fest verbunden wird. Eine vorgesehene Schneidvorrichtung läßt zunächst die Anschlußbahn passieren. Erst daran anschließend wird dann das Ende der Ablaufbahn abgetrennt, so daß es hier zu einer deutlichen Überlappung der beiden Bahnen kommt.From US-A-2 613 042 a device for merging material webs is known in which the new connecting web is firmly connected to the running web. A cutting device provided initially allows the connecting track to pass. Only then is the end of the run-off track cut off, so that there is a clear overlap of the two tracks.

Aufgabe der vorliegenden Erfindung ist es demgegenüber, das eingangs genannte Verfahren sowie eine entsprechende Vorrichtung so zu verbessern, daß ein Anschluß des Vorderendes einer Anschlußbahn an das Ablaufende einer Ablaufbahn ohne Überlappung gewährleistet ist, ohne daß es zu einer Reduzierung der Arbeitsgeschwindigkeit der Verpackungsmaschine kommt.In contrast, the object of the present invention is to improve the method mentioned at the outset and a corresponding device in such a way that a connection of the front end of a connecting track to the outlet end of a running track is ensured without overlap, without the working speed of the packaging machine being reduced.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, daß die nachfolgende, neue Materialbahn nach dem Abtrennen der ablaufenden Materialbahn in die Förderbahn derselben eingeführt wird, wobei das Vorderende der Anschlußbahn unmittelbar nach dem oder mit geringem Abstand vom Ablaufende der Ablaufbahn durch die gemeinsame Förderbahn hindurchgeführt wird. Auf diese Weise wird eine Bahnüberlappung, die in der Verpackungsmaschine bzw. im Trennaggregat zu Störungen führen kann, nicht gebildet. Auch ist ein Stillstand der Verpackungsmaschine, etwa zum Verkleben der Bahnenden, nicht erforderlich.To achieve this object, the method according to the invention is characterized in that the subsequent new material web is introduced into the conveyor path after the separating material web has been separated off, the front end of the connecting web immediately after or at a short distance from the end of the run-off path through the common conveyor path is passed through. In this way, a web overlap, which can lead to faults in the packaging machine or in the separating unit, is not formed. A standstill of the packaging machine, for example for gluing the web ends, is also not necessary.

Die für die Durchführung des Verfahrens geeignete Vorrichtung ist dadurch gekennzeichnet, daß die Schneidvorrichtung mit dem Antrieb der Materialbahnen steuerbar ist, so daß beim Betätigen des Antriebs für die Anschlußbahn die Schneidvorrichtung zum Abtrennen der ablaufenden Bahn ebenfalls betätigbar ist, und daß die Schneidvorrichtung bis zum Abtrennen der ablaufenden Bahn als Anschlag für die Anschlußbahn wirkt. Auf diese Weise vermag das Vorderende der Anschlußbahn dem Ablaufende der Ablaufbahn unmittelbar zu folgen.The device suitable for carrying out the method is characterized in that the cutting device can be controlled with the drive of the material webs, so that when the drive for the connecting web is actuated the cutting device for cutting off the running web can also be actuated, and that the cutting device until it is cut off the running web acts as a stop for the connecting web. In this way, the front end of the connecting track is able to immediately follow the end of the run-off track.

In Förderrichtung vor den Zug- und Schubwalzen sowie entlang der Förderbahn sind ortsfeste Führungen für die Materialbahnen gebildet, in einem Bereich benachbart zur Schneidvorrichtung mit Saugbohrungen zum zeitweiligen Halten und Ausrichten des Vorderendes der Anschlußbahn.In the conveying direction in front of the pulling and pushing rollers and along the conveying path, fixed guides for the material webs are formed, in an area adjacent to the cutting device with suction bores for temporarily holding and aligning the front end of the connecting web.

Weitere Merkmale der Erfindung beziehen sich auf den konstruktiven Aufbau der Schneidvorrichtung, auf die Betätigung derselben in Verbindung mit der Steuerung, der Zug- und Schubwalzen sowie auf den Aufbau und die Funktion der Hauptzugwalzen.Further features of the invention relate to the structural design of the cutting device, to the actuation thereof in connection with the control, the pulling and pushing rolls, and to the design and function of the main pulling rolls.

Ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung wird nachfolgend anhand der Zeichnungen näher erläutert.An embodiment of the device according to the invention is explained in more detail below with reference to the drawings.

Es zeigen:

  • Fig. 1 die Vorrichtung zum Aneinanderschließen von Materialbahnen in Seitenansicht,
  • Fig. 2 einen Ausschnitt der Vorrichtung gemäß Fig. 1 in vergrößertem Maßstab.
Show it:
  • 1 shows the device for connecting webs of material in side view,
  • Fig. 2 shows a detail of the device of FIG. 1 on an enlarged scale.

Die gezeigte Vorrichtung ist Bestandteil einer Verpackungsmaschine, insbesondere für die Herstellung von Klappschachteln, bzw. dieser zugeordnet. Der Verpackungsmaschine bzw. einem Stanzaggregat zur Herstellung von (Kragen) Zuschnitten wird fortlaufend bei hoher Fördergeschwindigkeit eine Materialbahn aus dünnem Karton od. dgl. als Ablaufbahn 10 zugeführt. Diese Ablaufbahn 10 wird von einer ersten Bobine 11 abgezogen, die im vorliegenden Fall nahezu verbraucht ist. Sobald ein Ablaufende dieser aktiven Ablaufbahn 10 erreicht ist, wird eine neue Bobine 12 bzw. deren Anschlußbahn 13 in den Förderfluß eingeführt und der Verpackungsmaschine zugeführt. Im Bereich der ersten Bobine 11 kann dann ein Bobinenaustausch stattfinden, wobei im wesentlichen lediglich ein zylindrischer (Papp) Kern 14 von einem Drehzapfen 15 einer im einzelnen nicht dargestellten Tragvorrichtung für die Bobinen 11 und 12 abgezogen werden muß.The device shown is part of a packaging machine, in particular for the production of hinged boxes, or is assigned to the latter. The packaging machine or a punching unit for the production of (collar) blanks is continuously supplied with a material web of thin cardboard or the like as a runway 10 at high conveying speed. This runway 10 is drawn off from a first reel 11, which in the present case is almost used up. As soon as the end of this active runway 10 is reached, a new bobbin 12 or its connecting web 13 is introduced into the conveying flow and fed to the packaging machine. A bobbin exchange can then take place in the area of the first bobbin 11, essentially only a cylindrical (cardboard) core 14 having to be pulled off a pivot pin 15 of a support device for the bobbins 11 and 12, which is not shown in detail.

Die "aktive" Ablaufbahn 10 wird durch Zugwalzen gefördert, nämlich von der Bobine 11 abgezogen. Ein Paar von Hauptzugwalzen 16, 17 ist der Verpackungsmaschine zu- und am Austrittsende einer im vorliegenden Falle schräg ansteigenden Förderbahn 18 für die Materialbahnen angeordnet. Am gegenüberliegenden Eintrittsende dieser Förderbahn 18 sind zwei Paare von Zugund Schubwalzen 19 bzw. 20 je für eine der Materialbahnen 10, 13, angeordnet. Bei dem vorliegenden Ausführungsbeispiel bestehen diese Zugwalzenpaare je aus einer feststehenden Zugund Schubwalze 19 bzw. 20 in enger Nachbarschaft zueinander sowie einer beweglichen kleineren Gegenwalze 21, die alternativ der einen oder anderen Zugund Schubwalze 19, 20 zugestellt und an deren Umfang bzw. an eine der Materialbahnen 10, 13 angedrückt wird. Die Zugund Schubwalzen 19, 20 mit Gegenwalze 21 sind an der Einführungsseite der Förderbahn 18 angeordnet, wobei die Gegenwalze 21 stets zwischen den Materialbahnen 10, 13 bewegbar ist.The "active" run-off track 10 is conveyed by pull rollers, namely pulled off the bobbin 11. A pair of main pulling rollers 16, 17 is arranged towards the packaging machine and is arranged at the outlet end of a conveyor track 18 for the material webs, which in the present case rises obliquely. At the opposite entry end of this conveyor track 18, two pairs of pulling and pushing rollers 19 and 20, each for one of the material tracks 10, 13, are arranged. In the present exemplary embodiment, these pairs of pulling rollers each consist of a fixed pulling and pushing roller 19 or 20 in close proximity to one another and a movable, smaller counter-roller 21 which alternatively is delivered to one or the other pulling and pushing roller 19, 20 and on its circumference or on one of the material webs 10, 13 is pressed. The train and push rollers 19, 20 with counter roller 21 are arranged on the introduction side of the conveyor track 18, the counter roller 21 always being movable between the material tracks 10, 13.

Den beiden Zug- und Schubwalzen 19, 20 ist jeweils eine in Förderrichtung davorliegende Umlenkwalze 22 bzw. 23 für die betreffende Materialbahn 10, 13 zugeordnet. Durch diese Umlenkwalzen 22, 23 ist gewährleistet, daß die Materialbahnen 10, 13 jeweils unter einem bestimmten Winkel zu den Zug. und Schubwalzen 19, 20 geführt werden.The two pulling and pushing rollers 19, 20 are each assigned a deflection roller 22 and 23 for the material web 10, 13 in front in the conveying direction. These deflecting rollers 22, 23 ensure that the material webs 10, 13 are each at a certain angle to the train. and push rollers 19, 20 are guided.

Die Förderbahn 18 wird in einem den Hauptzugwalzen 16, 17 zugekehrten Bereich durch feststehende seitliche bzw. obere und untere Führungswände 24, 25 definiert. Diese sind in Richtung auf die Hauptzugwalzen 16, 17 konvergierend angeordnet. Die Führungswände 24, 25 enden unmittelbar benachbart zum Umfang der Hauptzugwalzen 16, 17, teilweise unter Anpassung an den bogenförmigen Verlauf der Ablaufbahn 10.The conveyor track 18 is defined in a region facing the main drawing rollers 16, 17 by fixed lateral or upper and lower guide walls 24, 25. These are arranged converging in the direction of the main drawing rollers 16, 17. The guide walls 24, 25 end immediately adjacent to the circumference of the main drawing rollers 16, 17, in part adapting to the arcuate course of the runway 10.

In einem den Zug- und Schubwalzen 19, 20 zugekehrten Bereich ist die Förderbahn 18 außen durch Außenwände 26, 27 begrenzt, die ebenfalls in Förderrichtung leicht konvergierend angeordnet sind und auf der Innenseite jeweils Saugbohrungen 28 aufweisen. Diese sind an eine im einzelnen nicht gezeigte Unterdruckquelle angeschlossen und werden so gesteuert, daß ein Vorderende 29 der Anschlußbahn 13 in einer Bereitschaftsstellung durch die Saugbohrungen 28 an der zugeordneten Außenwand 26 bzw. 27 fixiert wird. Zwischen den Außenwänden 26 und 27 und den beiden Materialbahnen 10, 13 ist ein Mittelstück 30 angeordnet, welches gegenüber den Außenwänden 26, 27 einen verhältnismäßig schmalen Führungsspalt für die Materialbahnen 10, 13 begrenzt. An der Eintrittsseite der Förderbahn 18 schließen an das Mittelstück 30 den Materialbahnen 10, 13 zugeordnete Leitwände 31 und 32 an, die sich bis an die Umlenkwalzen 22 und 23 heran erstrecken und zur Führung der Materialbahnen 10, 13 in diesem Bereich dienen. Die vorgenannten Leitwände 31, 32 sind mit Ausnehmu-rigen für den Durchtritt der Gegenwalze 21 versehen.In a region facing the pulling and pushing rollers 19, 20, the conveying path 18 is delimited on the outside by outer walls 26, 27, which are also arranged to converge slightly in the conveying direction and each have suction bores 28 on the inside. These are connected to a vacuum source, not shown in detail, and are controlled so that a front end 29 of the connecting track 13 is fixed in a standby position by the suction bores 28 on the associated outer wall 26 and 27, respectively. A middle piece 30 is arranged between the outer walls 26 and 27 and the two material webs 10, 13 and limits a relatively narrow guide gap for the material webs 10, 13 with respect to the outer walls 26, 27. On the entry side of the conveyor track 18, the central piece 30 is followed by guide walls 31 and 32 assigned to the material tracks 10, 13, which extend as far as the deflection rollers 22 and 23 and serve to guide the material tracks 10, 13 in this area. The aforementioned guide walls 31, 32 are provided with recesses for the passage of the counter roller 21.

trrfBereich der Förderbahn 18, und zwar mit Abstand sowohl von den Hauptzugwalzen 16, 17 alsauch von den Zug. und Schubwalzen 19,20, ist eine Schneidvorrichtung 33 angeordnet. Diese hat die Aufgabe, ein Endstück der Ablaufbahn 10 von dieser abzutrennen, wenn die betreffende Bobine 11 verbraucht ist. Die Schneidvorrichtung 33 wird zu diesem Zweck von Kontrollorganen gesteuert, im vorliegenden Fall von optischen Sensoren 34, 35, die jeweils an korrespondierenden Stellen, nämlich unmittelbar benachbart zu den Umlenkwalzen 22, 23, das Ende der Ablaufbahn 10 überwachen. Das durch die Schneidvorrichtung 33 abgetrennte Endstück der Ablaufbahn 10 ist demnach verhältnismäßig kurz.trrf area of the conveyor track 18, and at a distance from both the main drawing rollers 16, 17 and the train. and push rollers 19, 20, a cutting device 33 is arranged. This has the task of separating an end piece of the runway 10 from the latter when the bobbin 11 in question has been used up. For this purpose, the cutting device 33 is controlled by control elements, in the present case by optical sensors 34, 35, which in each case monitor the end of the runway 10 at corresponding points, namely directly adjacent to the deflecting rollers 22, 23. The end piece of the run-off track 10 separated by the cutting device 33 is accordingly relatively short.

Die in den Förderfluß positionsgerecht einzuführende Anschlußbahn 13 liegt mit ihren Vorderenden 29 während der Förderung der Ablaufbahn 10 in der Förderbahn 18 in Bereitschaftsstellung, und zwar an einem Anschlag 36. Mit dem Abtrennen des Endstücks von der Ablaufbahn 10 wird der Anschlag 36 aus der sperrenden Position für die Anschlußbahn 13 herausbewegt und diese zugleich in Förderrichtung durch die zugeordnete Zug- und Schubwalze 20 in Verbindung mit der Gegenwalze 21 angetrieben. Die Bewegung der einzelnen Organe ist dabei so aufeinander abgestimmt, daß das Vorderende 29 derAnschlußbahn 13 dem Ablaufende der Ablaufbahn 10 unmittelbar, nämlich mit einem sehr kleinen Abstand, folgt. Sobald das Vorderende 29 die Hauptzugwalzen 16, 17 erreicht hat, wird die Förderung durch diese (mit-)übernommen.The connecting path 13 to be inserted into the conveying flow in the correct position lies with its front ends 29 in the ready position during the conveyance of the runway 10 in the conveying path 18, namely at a stop 36. When the end piece is separated from the runway 10, the stop 36 becomes out of the blocking position moved out for the connecting web 13 and at the same time driven in the conveying direction by the associated pulling and pushing roller 20 in connection with the counter roller 21. The movement of the individual organs is coordinated with one another in such a way that the front end 29 of the connecting track 13 follows the running end of the drain track 10 directly, namely with a very small distance. As soon as the front end 29 has reached the main drawing rollers 16, 17, the conveyance is taken over by them.

Die Zug- und Schubwalzen 19, 20 sowie die Gegenwalze 21 sind auf einem gemeinsamen, etwa T-förmigen Walzenträger 37 gelagert, die Gegenwalze 21 mittelbar über einen (zweiarmigen) Betätigungshebel 38. Dieser ist über ein Drehlager 39 mit dem Walzenträger 37 verbunden. An dem zur Gegenwalze 21 gegenüber liegenden Ende wirkt ein Betätigungsorgan auf den Betätigungshebel 38 ein, im vorliegenden Falle ein Druckmittelzylinder 40, der in beiden Bewegungsrichtungen einer Kolbenstange 41 mit Druckmittel beaufschlagbar ist. Durch Schwenkbewegungen des Betätigungshebels 38 wird die Gegenwalze 21 der einen oder anderen Zug- und Schubwalze 19, 20 zugestellt.The pulling and pushing rollers 19, 20 and the counter roller 21 are mounted on a common, approximately T-shaped roller carrier 37, the counter roller 21 indirectly via a (two-armed) actuating lever 38. This is connected to the roller carrier 37 via a rotary bearing 39. At the end opposite the counter roller 21, an actuating element acts on the actuating lever 38, in the present case a pressure medium cylinder 40 which can be acted upon with pressure medium in both directions of movement of a piston rod 41. The counter-roller 21 is fed to one or the other pulling and pushing roller 19, 20 by pivoting movements of the actuating lever 38.

Die Schneidvorrichtung 33 ist bei dem vorliegenden Ausführungsbeispiel mit dem Antrieb für die Gegenwalze 21 gekoppelt. Das Steuersignal der Sensoren 34, 35 wird demnach auf den Druckmittelzylinder 40 übertragen. Zur Weiterleitung von Stellbewegungen an die Schneidvorrichtung 33 ist ein Betätigungsgestänge mit Lenkern 42 und 43 und einer Schubstange 44 vom Drehlager 39 aus zur Schneidvorrichtung 33 geführt.In the present exemplary embodiment, the cutting device 33 is coupled to the drive for the counter roller 21. The control signal of the sensors 34, 35 is accordingly transmitted to the pressure medium cylinder 40. An actuating linkage with links 42 and 43 and a push rod 44 is guided from the pivot bearing 39 to the cutting device 33 in order to forward actuating movements to the cutting device 33.

Die Schneidvorrichtung 33 ist bei dem gezeigten Ausführungsbeispiel als Drehschneider ausgebildet. In einem zylindrischen Messergehäuse 45 ist ein zylindrisches Schneidmesser 46 drehbar gelagert. Über den Lenker 43 erfolgt eine hin- und hergehende Drehbewegung längs eines begrenzten Drehwinkels.In the exemplary embodiment shown, the cutting device 33 is designed as a rotary cutter. A cylindrical cutting knife 46 is rotatably mounted in a cylindrical knife housing 45. A reciprocating rotary movement along a limited angle of rotation takes place via the link 43.

Das Schneidmesser 46 ist mit einem radial hindurchgeführten Durchgangsschlitz 47 versehen. Durch diesen tritt die Materialbahn 10 bzw. 13 hindurch. Auf der Eintrittsseite bildet das Schneidmesser 46 Schneidkanten 48, 49, die mit Gegenkanten 50, 51 eines Gegenmessers 52 zusammenwirken. Das Gegenmesser 52 ist Teil des feststehenden, also unverdrehbaren Messergehäuses 45 und im Bereich einer Eintrittsausnehmung 53 desselben angeordnet. Diese korrespondiert mit dem Durchgangsschlitz 47 des Schneidmessers 46. Gegenüberliegend ist im Messergehäuse 45 eine Austrittsausnehmung 54 gebildet. Das Gegenmesser 52 liegt im Bereich der Eintrittsausnehmung 53 mittig, derart, daß die Materialbahnen 10,13 zu beiden Seiten des Gegenmessers 52 geführt werden. Die Eintrittsausnehmung 53 ist in Umfangsrichtung so bemessen, daß die Außenwände 26, 27 in diese Eintrittsausnehmung 53 hineinragen.The cutting knife 46 is provided with a through slot 47 which is guided radially through it. The material web 10 or 13 passes through this. On the entry side, the cutting knife 46 forms cutting edges 48, 49 which interact with counter edges 50, 51 of a counter knife 52. The counter knife 52 is part of the fixed, ie non-rotatable knife housing 45 and is arranged in the area of an inlet recess 53 of the same. This corresponds to the through-slot 47 of the cutting knife 46. An outlet recess 54 is formed in the knife housing 45 opposite. The counter knife 52 is located in the center of the entry recess 53 in such a way that the material webs 10, 13 are guided to both sides of the counter knife 52. The entry recess 53 is dimensioned in the circumferential direction so that the outer walls 26, 27 protrude into this entry recess 53.

Das Schneidmesser 46 ist so ausgebildet bzw. der Durchgangsschlitz 47 eingangsseitig derart bemessen, daß ein Umfangsbereich des Schneidmessers 46 als Anschlag für das Vorderende 29 der sich jeweils in Bereitschaftsposition befindenden Anschlußbahn 13 dient. Der Durchgangsschlitz 47 ist zu diesem Zweck im Eintrittsbereich so ausgebildet, daß in den Endstellungen des Schneidmessers 46 jeweils ein an die Schneidkante 48 bzw. 49 anschließender Umfangsbereich als Anschlag 36 wirkt. Dadurch liegt das Vorderende 29 der Anschlußbahn 13 praktisch in der Schneidebene. Auf der Austrittsseite ist die Relativstellung des Durchgangsschlitzes 47 in bezug auf die Austrittsausnehmung 54 so gewählt, daß die jeweils durchlaufende Ablaufbahn 10 ohne Behinderung durch das Messergehäuse 45 frei gefördert werden kann.The cutting knife 46 is designed or the through slot 47 is dimensioned on the input side in such a way that a peripheral region of the cutting knife 46 serves as a stop for the front end 29 of the connecting track 13 which is in the standby position. For this purpose, the through-slot 47 is formed in the entry area in such a way that in the end positions of the cutting knife 46 a circumferential area adjoining the cutting edge 48 or 49 acts as a stop 36. As a result, the front end 29 of the connecting track 13 is practically in the cutting plane. On the exit side, the relative position of the through slot 47 with respect to the exit recess 54 is selected so that the respective continuous runway 10 can be freely conveyed through the knife housing 45 without hindrance.

Die Hauptzugwalzen 16, 17 und die Zug- und Schubwalzen 19, 20 stehen in getrieblicher Verbindung miteinander. Bei dem vorliegenden Ausführungsbeispiel wird die (größere) Hauptzugwalze 17 durch einen in den Zeichnungen nicht dargestellten Motor fortlaufend angetrieben. Über einen Hülltrieb, nämlich über einen Zahnriemen 55, steht ein Zahnriemenrad 56 der Hauptzugwalze 17 in Verbindung mit einem korrespondierenden Zahnriemenrad 57 der Zug- und Schubwalze 20. Diese wiederum ist in Antriebsverbindung mit der Zug- und Schubwalze 19.The main pulling rollers 16, 17 and the pulling and pushing rollers 19, 20 are in geared connection with one another. In the present embodiment, the (larger) main drawing roller 17 is continuously driven by a motor, not shown in the drawings. Via an enveloping drive, namely via a toothed belt 55, a toothed belt wheel 56 of the main pulling roller 17 is connected to a corresponding toothed belt wheel 57 of the pulling and pushing roller 20. This in turn is in drive connection with the pulling and pushing roller 19.

Die Abmessungen der Zahnriemenräder 56 und 57 und die Durchmesser der Hauptzugwalze 17 bzw. der Zug- und Schubwalze 20 sind so gewählt, daß die Zug- und Schubwalzen 19, 20 mit einer geringfügig niedrigeren Geschwindigkeit angetrieben werden als die Hauptzugwalze 17. Konkret sind die relevanten Durchmesser der Zug- und Schubwalzen 19,20 um 0,6 mm kleiner als der der Hauptzugwalze 17. Dadurch ist gewährleistet, daß die Materialbahn 10, 13 stets unter leichter Spannung, jedenfalls faltenfrei im Bereich der Förderbahn 18 transportiert wird. Ein Schlupf der Materialbahn 10, 13 bzw. eine Überspannung wird dadurch vermieden, daß die Hauptzugwalze 17 bzw. das dieser zugeordnete Zahnriemenrad 56 mit einem in entsprechender Richtung wirkenden Freilauf 58 ausgestattet ist. Die geringfügig höhere Geschwindigkeit der Hauptzugwalzen 16,17 kommt lediglich während des kurzen Moments nach dem Abtrennen eines Endstücks der Ablaufbahn 10 zur Wirkung, so daß diese geringfügig schneller transportiert wird als das Vorderende 29 der nachfolgenden Anschlußbahn 13.The dimensions of the toothed belt wheels 56 and 57 and the diameter of the main pulling roller 17 and the pulling and pushing roller 20 are selected so that the pulling and pushing rollers 19, 20 are driven at a slightly lower speed than the main pulling roller 17. Specifically, the relevant ones The diameter of the pulling and pushing rollers 19, 20 is 0.6 mm smaller than that of the main pulling roller 17. This ensures that the material web 10, 13 is always transported in the region of the conveyor path 18 under slight tension, in any case without creases. A slippage of the material web 10, 13 or an overvoltage is avoided in that the main pulling roller 17 or the toothed belt wheel 56 associated therewith is equipped with a freewheel 58 acting in the corresponding direction. The slightly higher speed of the main traction rollers 16, 17 only comes into effect during the short moment after an end piece of the run-off track 10 has been severed, so that it is transported slightly faster than the front end 29 of the subsequent connecting track 13.

Das abgetrennte Endstück der Ablaufbahn 10 wird (manuell) beseitigt. Während die Anschlußbahn 13 gefördert wird, kann eine neue Bobine auf den Drehzapfen 15 aufgesetzt werden. Die (neue) Anschlußbahn wird mit dem Vorderende (manuell) eingefädelt bis in die Bereitschaftsstellung, in der das Vorderende 29 an den Anschlag 36 in der Förderbahn 18 anliegt.The separated end piece of the runway 10 is removed (manually). While the connecting track 13 is being conveyed, a new bobbin can be placed on the pivot pin 15. The (new) connecting track is (manually) threaded into the ready position in which the front end 29 abuts the stop 36 in the conveyor track 18.

Durch die getriebliche Verbindung der Zugwalzen laufen die Hauptzugwalzen 16 und 17 sowie die Zug- und Schubwalzen 19 und 20 ständig um. Die Förderwirkung für die Materialbahn im Bereich der Zug- und Schubwalzen 19, 20 wird ausschließlich durch die Anlage der Gegenwalze 21 bewirkt.Due to the geared connection of the pull rollers, the main pull rollers 16 and 17 and the pull and push rollers 19 and 20 rotate continuously. The conveying effect for the material web in the area of the pulling and pushing rollers 19, 20 is effected exclusively by the abutment of the counter roller 21.

Claims (14)

1. Process for changing reels (11, 12) of sheets (10, 13) of relatively stiff packaging material, especially thin cardboard, for severing collar blanks of a hinge-lid cigarette pack, in connection with a packaging machine, particularly cigarette packaging machine, the running-off sheet of material (10) being supplied along a conveyor track (18) to a severing or packaging unit and a following new sheet of material (13) is kept ready to connect up to the running-off sheet of material (10), characterized in that, after severing the running-off sheet of material (10), the following new sheet of material (13) is introduced into the conveyor track (18) of the same running off sheet of material, the front end (29) of the connecting sheet (13) being guided through the common conveyor track (18) immediately after or at a short distance from the run-off end of the run-off sheet (10).
2. Process according to Claim 1, characterized in that the front end (29) and a front portion of the connecting sheet (13) are kept ready in the region of the conveyor track (18), an end piece of the run-off sheet (10) is severed from this and, approximately at the same time, the feed or transport of the connecting sheet (13) is started by means of the front end (29).
3. Apparatus for supplying sheets (10, 13) of relatively stiff packaging material, especially thin cardboard, for producing blanks for collars of a hinge-lid cigarette pack, to a severing or packaging unit via a conveyor track (18) leading to the latter, the sheets of material (10, 13) running off alternately from one reel or another (11, 12), each sheet of material (10, 13) having assigned to it a separately switchable pushing means, especially a pair of push rollers (19, 21; 20, 21) each which alternately effect the transport or feed of one sheet of material (10, 13) or the other, the two pairs of push rollers (19, 21; 20, 21) being further followed in the conveying direction by a further pair of draw rollers (16, 17), to exert a conveying pull force on the particular sheet of material (10, 13) which is running, and the two sheets of material (10, 13) having assigned to them a cutting device (33) for severing an end piece from the sheet (10, 13) which is just running off, characterized in that the cutting device (33) is controllable by use of the drive of the sheets of material (10, 13), so that when the drive for the connecting sheet (13) is actuated, the cutting device (33) for severing the sheet (10) which is running off can likewise be actuated, and in that the cutting device (33) acts as a stop (36) for the connecting sheet until the severing of the sheet (10) which is running off.
4. Apparatus according to Claim 3, characterized in that a link (42) of an actuating rod for the cutting device (33), especially for a rotatable cutting knife (46), is connected to a pivot bearing (39) for an actuating lever (38) of a roller (counter-roller 21) of the two pairs of push rollers (19,21; 20,21) in such a way that the severing of the end piece of the run-off sheet (10) and the drive of the connecting sheet (13) can be executed approximately simultaneously.
5. Apparatus according to Claim 5, characterized in that the cutting knife (46) is designed as a rotary part, especially as a rotary cylinder, in a cylindrical fixed knife housing (45), the cutting knife (46) and knife housing (45) each being provided with a radially directed through- slit (47) and an inlet recess (53) and outlet recess (54) for guiding through one of the sheets of material (10, 13) in-feach case.
6. Apparatus according to Claim 5, characterized in that edges located on the inlet side and intended for limiting the through-slit (47) form in the cutting knife (46), rotatable to and fro, cutting edges (48, 49) which interact with counter-edges (50,51) of a part of the knife housing (45) extending centrally between the sheets of material (10. 13).
7. Apparatus according to Claim 5 or 6, characterized in that the stop (36) for the front end (29) of the connecting sheet (13) is formed by the (cylindrical) cutting knife (46), outside the region of the throughslit (47).
8. Apparatus according to one of Claims 5 to 7, characterized in that the conveyor track (18) leading to the main draw rollers (16, 17) is limited at least partially by guide walls (24, 25) which are made to converge in the conveying direction, and outer walls (26, 27).
9. Apparatus according to Claim 8, characterized in that a region facing the run-in side of the conveyor track (18) is provided, through outer walls (26, 27), with suction bores (28) facing the sheets of material (10, 13) and intended for the temporary fixing of a sheet of material.
10. Apparatus according to Claim 8 or 9, characterized in that the outer walls (26, 27) with suction bores (28) for fixing the front region of a connecting sheet (13) extend into the knife housing (45) in the position of readiness.
11. Apparatus according to one of Claims 3 to 10, characterized in that in the region between the fixed draw and push rollers (19,20) and in the adjacent region up to the cutting device (33) a stationary centre piece (30) is arranged between the sheets of material (10, 13).
12. Apparatus according to one of Claims 3 to 11, characterized in that the main draw rollers (16, 17) have a slightly higher conveying speed than the draw and push rollers (19, 20, 21), so that longitudinal tension is exerted in the region between the abovementioned rollers on the particular sheet of material (10, 13) being conveyed.
13. Apparatus according to one of Claims 3 to 12, characterized in that the main draw rollers (16, 17), on the one hand, and the draw and push rollers (19, 20), on the other hand, are connected to one another in drive terms, the drive being generated in the region of the main draw roller (17) and being able to be transmitted to the one draw and push roller (20) via a toothed belt (55) or the like.
14. Apparatus according to Claim 13, characterized in that the main draw roller (17) has a slightly larger diameter than the draw and push rollers (19, 20), and in that the main draw roller (17) or a toothed-belt pulley (56) of the latter is designed with a free-wheel (58).
EP85111098A 1984-10-03 1985-09-03 Method and device for changing web rolls in connection with packaging machines Expired - Lifetime EP0176789B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3436217 1984-10-03
DE19843436217 DE3436217A1 (en) 1984-10-03 1984-10-03 METHOD AND DEVICE FOR CHANGING BOBINS IN CONNECTION WITH PACKING MACHINES

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EP0176789A2 EP0176789A2 (en) 1986-04-09
EP0176789A3 EP0176789A3 (en) 1988-02-03
EP0176789B1 true EP0176789B1 (en) 1990-08-22

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US (1) US4694714A (en)
EP (1) EP0176789B1 (en)
JP (1) JPS6186351A (en)
CN (1) CN1005480B (en)
BR (1) BR8504850A (en)
CA (1) CA1257241A (en)
DE (2) DE3436217A1 (en)

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CA1257241A (en) 1989-07-11
JPH0550417B2 (en) 1993-07-29
DE3579283D1 (en) 1990-09-27
BR8504850A (en) 1986-07-22
DE3436217A1 (en) 1986-04-03
CN1005480B (en) 1989-10-18
JPS6186351A (en) 1986-05-01
CN85106690A (en) 1986-03-10
US4694714A (en) 1987-09-22
EP0176789A2 (en) 1986-04-09
EP0176789A3 (en) 1988-02-03

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