DE3813777A1 - TENSIONING DEVICE FOR FASTENING A FLEXIBLE FILM - Google Patents

TENSIONING DEVICE FOR FASTENING A FLEXIBLE FILM

Info

Publication number
DE3813777A1
DE3813777A1 DE3813777A DE3813777A DE3813777A1 DE 3813777 A1 DE3813777 A1 DE 3813777A1 DE 3813777 A DE3813777 A DE 3813777A DE 3813777 A DE3813777 A DE 3813777A DE 3813777 A1 DE3813777 A1 DE 3813777A1
Authority
DE
Germany
Prior art keywords
clamping
cylinder
gripper
pit
spiral
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.)
Granted
Application number
DE3813777A
Other languages
German (de)
Other versions
DE3813777C2 (en
Inventor
Harry Brandes
Rudolf Raab
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to DE3813777A priority Critical patent/DE3813777A1/en
Priority to DE8989104456T priority patent/DE58900612D1/en
Priority to AT89104456T priority patent/ATE70778T1/en
Priority to EP89104456A priority patent/EP0339228B1/en
Priority to ES198989104456T priority patent/ES2029357T3/en
Publication of DE3813777A1 publication Critical patent/DE3813777A1/en
Application granted granted Critical
Publication of DE3813777C2 publication Critical patent/DE3813777C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1231—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Connection Of Plates (AREA)
  • Clamps And Clips (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

In order to make it possible to tension a foil, clamped to the end by means of two clamping rails, on a back-up cylinder (4) having gripper mounting strips (3), at the start of printing, whilst at the same time ensuring that the tensioning elements take up the least amount of space, eccentric bolts (11) equipped with a clamping spiral (12) are rotatably mounted as tensioning elements in the gripper mounting strips (3) so as to penetrate transversely into these. The clamping spiral (12) of the eccentric bolts (11) rests from above in a self-locking manner on an engagement surface (13) of one clamping rail (7) arranged underneath the gripper mounting strips (3), so that during the rotation of the eccentric bolts (11) the clamping rail (7) is movable radially downwards into the cylinder interior jointly with the second clamping rail (8), guided in a recess (9) behind the pit wall (6) of the back-up cylinder (4), and the end of the foil (1). <IMAGE>

Description

Die Erfindung betrifft eine Spanneinrichtung zum Befestigen einer bieg­ samen Folie am Druckanfang eines Greiferaufschlagleisten aufweisenden Zylinders einer Druckmaschine nach dem Oberbegriff des Patent­ anspruches.The invention relates to a clamping device for attaching a bend seed film at the start of printing of a gripper bar Cylinder of a printing machine according to the preamble of the patent claim.

Eine derartige Spanneinrichtung ist bereits bekannt und in der DE-PS 23 41 326 beschrieben.Such a tensioning device is already known and in the DE-PS 23 41 326 described.

Bei dieser Spanneinrichtung besteht die Befestigungsvorrichtung für die Folie am Druckanfang aus wenigstens einem Winkeleisen, das mit einem Schenkel auf dem Boden des Zylinderkanals sich abstützend durch ein Schraubelement entgegen der Kraft einer Feder verschwenkbar ist, wobei der andere Schenkel des Winkeleisens ein mit Verdickungen in Form von Klemmschienen versehenes Ende der Folie erfaßt und die Folie damit in das Zylinderinnere radial hineinbewegbar ist. Hierbei ergibt sich demnach nicht nur eine große Grubenöffnung, sondern auch eine große Grubentiefe.In this clamping device there is the fastening device for the Foil at the beginning of printing from at least one angle iron, which with a Leg supported on the bottom of the cylinder channel by a Screw element is pivotable against the force of a spring, wherein the other leg of the angle iron one with thickening in the form of Clamping rails provided end of the film and the film in the inside of the cylinder can be moved radially into it. This results in therefore not only a large pit opening, but also a large one Pit depth.

Hiervon ausgehend ist es daher Aufgabe der vorliegenden Erfindung, eine Spanneinrichtung genannter Gattung so weiterzubilden, daß das Spannen der Folie am Druckanfang bei geringstem Platzbedarf ermöglicht wird.Proceeding from this, it is therefore an object of the present invention to Clamping device of the type mentioned so that the clamping the film at the start of printing with the smallest space requirement.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches.This task is solved by the characteristic features of the Claim.

Die Erfindung wird nachstehend anhand der Zeichnung in einem Ausführungsbeispiel kurz beschrieben.The invention is illustrated below in a drawing Embodiment briefly described.

Es zeigen:Show it:

Fig. 1 eine Seitenansicht einer erfindungsgemäßen Vorrichtung in einem Gegendruckzylinder einer Druckmaschine, Fig. 1 is a side view of a device according to the invention in a counter-pressure cylinder of a printing machine,

Fig. 2 die Einzelheit X nach Fig. 1, Fig. 2 shows the detail X of FIG. 1,

Fig. 3 den Schnitt AB nach Fig. 1 ohne Bogengreifer 14. Fig. 3 shows the section AB according to FIG. 1 without sheet grippers 14.

In einem Gegendruckzylinder 4 sind auf einer Greiferwelle 15 einzelne Bogengreifer 14 angeordnet. Die Bewegung der Bogengreifer 14 erfolgt durch nicht näher dargestellte Bewegungselemente. Die Greiferspitze der Bogengreifer 14 klemmt die Materialbogen 10 auf Greiferaufschlag­ leistenn 3, wobei diese z. B. aus zwei geteilten Schienen bestehen, die direkt oder über Zwischenstücke in der Zylindergrube 5 des Gegen­ druckzylinders 4 mittels Befestigungsschrauben 16 befestigt sind.In a counter-pressure cylinder 4 15 individual sheet grippers 14 are arranged on a gripper shaft. The movement of the sheet gripper 14 is carried out by movement elements, not shown. The gripper tip of the sheet gripper 14 clamps the material sheet 10 on the gripper bar 3 , these z. B. consist of two divided rails, which are attached directly or via spacers in the cylinder pit 5 of the counter-pressure cylinder 4 by means of fastening screws 16 .

Auf dem Gegendruckzylinder 4 ist eine biegsame Folie 1, Platte oder dergleichen durch eine Klemm- und Spannvorrichtungen 18 am Druckende aufspannbar. Das am Druckanfang 2 gelegene Ende der biegsamen Folie 1 ist mittels Klemmschienen 7, 8 oder dergleichen Verdickungen geklemmt. Beispielsweise ist das Ende der Folie 1 zwischen den zwei Klemmschienen 7, 8 durch Schrauben oder Nieten 17 verbunden. Die Klemmschienen 7, 8 werden gemeinsam mit dem Ende der biegsamen Folie in die Zylindergrube 5 zwischen Grubenwand 6 und den Greiferaufschlagleisten 3 hindurch­ geführt, wozu diese von der gegenüberliegenden Grubenwand 6 nach Lösen der Befestigungsschrauben 16 zu schieben sind. Die eine Klemmschiene 7 wird unterhalb der Greiferaufschlagleisten 3 angeordnet und die Klemmschiene 8 in einer hinter der Grubenwand 6 gelegenen Aussparung 9 an Auflageflächen der Zylindergrube 5 beim Spannen geführt. In den Greiferaufschlagleisten 3 sind hierzu in diese quer eindringend mit einer Klemmspirale 12 versehene Exzenterbolzen 11 drehbar gelagert. Die Klemmspirale 12 jedes Exzenterbolzens 11 liegt auf einer Eingriffs­ fläche 13 der einen Klemmschiene 7 selbsthemmend von oben auf. Zur Einleitung des Spannvorganges werden die Exzenterbolzen 11 zusammen mit den Klemmspiralen 12 verdreht, wodurch sich die Klemmschiene 7 mit der in der Aussparung 9 geführten Klemmschiene 8 mit dem Ende der Folie 1 von den Greiferaufschlagleisten 3 radial nach unten in das Zylinder­ innere wegbewegt. Die Folie 1 wird dabei auf dem Gegendruckzylinder 4 vom Druckanfang her gespannt. Da auch das Druckende mittels der Klemm­ und Spannvorrichtung 18 spannbar ist, können somit beide Enden der Folie 1 unabhängig voneinander gespannt werden. Da sich die Klemm­ schienen 7, 8 über die gesamte Länge der Zylindergrube 5 erstrecken, können diese durch die gleichmäßig über ihre Länge verteilten Exzenter­ bolzen 11 in Spannrichtung, d. h. zum Grubenboden hin gleichmäßig gezogen werden.A flexible film 1 , plate or the like can be clamped on the impression cylinder 4 by means of clamping and tensioning devices 18 at the end of the print. The end of the flexible film 1 located at the beginning of the print 2 is clamped by means of clamping rails 7 , 8 or the like thickening. For example, the end of the film 1 is connected between the two clamping rails 7 , 8 by screws or rivets 17 . The clamping rails 7 , 8 are guided together with the end of the flexible film into the cylinder pit 5 between the pit wall 6 and the gripper bar 3 , for which purpose these are to be pushed from the opposite pit wall 6 after loosening the fastening screws 16 . One clamping rail 7 is arranged below the gripper bars 3 and the clamping rail 8 is guided in a recess 9 located behind the pit wall 6 on contact surfaces of the cylinder pit 5 during tensioning. For this purpose, eccentric bolts 11, which are penetrated transversely with a clamping spiral 12 , are rotatably mounted in the gripper bar 3 . The clamping spiral 12 of each eccentric bolt 11 lies on an engagement surface 13 of the one clamping rail 7, self-locking from above. To initiate the tensioning process, the eccentric bolts 11 are rotated together with the clamping spirals 12 , as a result of which the clamping rail 7 with the clamping rail 8 guided in the cutout 9 moves with the end of the film 1 radially downward from the gripper impact strips 3 into the cylinder interior. The film 1 is stretched on the impression cylinder 4 from the start of printing. Since the printing end can also be tensioned by means of the clamping and tensioning device 18 , both ends of the film 1 can thus be tensioned independently of one another. Since the clamping rails 7 , 8 extend over the entire length of the cylinder pit 5 , these can be evenly pulled by the eccentric bolt 11 in the tensioning direction, that is to say, towards the bottom of the pit, due to the evenly distributed over its length.

Nach Abschluß des Spannvorganges am Druckanfang werden die Befestigungsschrauben 16 angezogen, so daß die Greiferaufschlagleisten 3 ihre endgültige Betriebsstellung einnehmen.After completion of the tensioning process at the beginning of the pressure, the fastening screws 16 are tightened so that the gripper bar 3 assume its final operating position.

Zum Durchführen der Befestigungsschrauben 16 durch die Folie 1 sind nicht dargestellte Aussparungen, z. B. Langlöcher vorgesehen, durch welche die Befestigungsschrauben 16 in den Gegendruckzylinder 4 greifen. To carry out the fastening screws 16 through the film 1 are not shown recesses, for. B. slots provided through which the mounting screws 16 engage in the impression cylinder 4 .

BezugszeichenlisteReference symbol list

1 Folie
2 Druckanfang
3 Greiferaufschlagleisten
4 Gegendruckzylinder
5 Zylindergrube
6 Grubenwand
7 Klemmschiene
8 Klemmschiene
9 Aussparung
10 Materialbogen
11 Exzenterbolzen
12 Klemmspirale
13 Eingriffsfläche
14 Bogengreifer
15 Greiferwelle
16 Befestiungsschraube
17 Schrauben oder Nieten
18 Klemm- und Spannvorrichtung 1 slide
2 Start of printing
3 grapple bars
4 impression cylinders
5 cylinder pit
6 pit wall
7 clamping rail
8 clamping rail
9 recess
10 sheets of material
11 eccentric bolts
12 clamping spiral
13 engagement surface
14 bow grabs
15 gripper shaft
16 fastening screw
17 screws or rivets
18 Clamping and tensioning device

Claims (1)

Spanneinrichtung zum Befestigen einer biegsamen Folie am Druckanfang eines Greiferaufschlagleisten aufweisenden Zylinders einer Druck­ maschine, bei der das in die Zylindergrube zwischen die Grubenwand und die Greiferaufschlagleisten hindurch geführte Ende der Folie mittels Klemmschienen oder dergleichen Verdickungen klemmbar ist, welche an Auflagenflächen in der Zylindergrube unterhalb der Greiferaufschlag­ leisten geführt sind und durch Spannelemente von den Greiferaufschlag­ leisten radial nach unten in das Zylinderinnere bewegbar sind, dadurch gekennzeichnet, daß als Spannelemente in den Greiferaufschlagleisten (3) in diese quer eindringend mit einer Klemmspirale (12) versehene Exzenterbolzen (11) drehbar gelagert sind und daß die Klemmspirale (12) jedes Exzenter­ bolzens (11) auf einer Eingriffsfläche (13) der einen unterhalb der Greiferaufschlagleisten (3) angeordneten Klemmschiene (7) des Klemmschienenpaares (7, 8) selbsthemmend von oben aufliegt.Clamping device for attaching a flexible film at the start of pressure of a cylinder having a gripper bar of a printing machine, in which the end of the film guided into the cylinder pit between the pit wall and the gripper bar can be clamped by means of clamping rails or the like thickening, which on support surfaces in the cylinder pit below the gripper bar perform and are guided by clamping elements from the gripper impact radially downward into the cylinder interior, characterized in that eccentric bolts ( 11 ) are rotatably mounted as clamping elements in the gripper impact strips ( 3 ) penetrating them transversely with a clamping spiral ( 12 ) and that the clamping spiral ( 12 ) of each eccentric bolt ( 11 ) rests on an engaging surface ( 13 ) of the one below the gripper bars ( 3 ) arranged clamping rail ( 7 ) of the clamping rail pair ( 7 , 8 ) from above.
DE3813777A 1988-04-23 1988-04-23 TENSIONING DEVICE FOR FASTENING A FLEXIBLE FILM Granted DE3813777A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE3813777A DE3813777A1 (en) 1988-04-23 1988-04-23 TENSIONING DEVICE FOR FASTENING A FLEXIBLE FILM
DE8989104456T DE58900612D1 (en) 1988-04-23 1989-03-14 TENSIONING DEVICE FOR FASTENING A BENDABLE FILM.
AT89104456T ATE70778T1 (en) 1988-04-23 1989-03-14 TENSION DEVICE FOR ATTACHING A FLEXIBLE FOIL.
EP89104456A EP0339228B1 (en) 1988-04-23 1989-03-14 Tensioning device for attaching a flexible film
ES198989104456T ES2029357T3 (en) 1988-04-23 1989-03-14 HOLDING DEVICE TO FIX A FLEXIBLE SHEET.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3813777A DE3813777A1 (en) 1988-04-23 1988-04-23 TENSIONING DEVICE FOR FASTENING A FLEXIBLE FILM

Publications (2)

Publication Number Publication Date
DE3813777A1 true DE3813777A1 (en) 1989-11-02
DE3813777C2 DE3813777C2 (en) 1992-12-03

Family

ID=6352745

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3813777A Granted DE3813777A1 (en) 1988-04-23 1988-04-23 TENSIONING DEVICE FOR FASTENING A FLEXIBLE FILM
DE8989104456T Expired - Lifetime DE58900612D1 (en) 1988-04-23 1989-03-14 TENSIONING DEVICE FOR FASTENING A BENDABLE FILM.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8989104456T Expired - Lifetime DE58900612D1 (en) 1988-04-23 1989-03-14 TENSIONING DEVICE FOR FASTENING A BENDABLE FILM.

Country Status (4)

Country Link
EP (1) EP0339228B1 (en)
AT (1) ATE70778T1 (en)
DE (2) DE3813777A1 (en)
ES (1) ES2029357T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5562036A (en) * 1994-07-14 1996-10-08 Koenig & Bauer Aktiengesellschaft Device for securing packings in printing cylinders

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034494C1 (en) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
GB2258842A (en) * 1991-08-21 1993-02-24 Billows Limited Apparatus for, and method of, mounting a printing plate on a cylinder of a printing press
DE9207780U1 (en) * 1992-06-10 1992-10-22 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4238121C2 (en) * 1992-11-12 1996-01-11 Roland Man Druckmasch Device for clamping printing plates on the plate cylinder of printing machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121072B (en) * 1957-07-04 1962-01-04 Aller Press As Device for attaching flexible printing plates to plate cylinders of rotary printing machines
DE1561082A1 (en) * 1967-06-20 1970-04-16 Albert Schnellpressen Device for clamping the printing cylinder elevator on printing machines
DE2341326C3 (en) * 1973-08-16 1977-07-28 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Multi-color sheet-fed rotary press with perforating device
DE3109859C2 (en) * 1981-03-14 1983-05-11 Albert-Frankenthal Ag, 6710 Frankenthal Blanket tensioning device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121072B (en) * 1957-07-04 1962-01-04 Aller Press As Device for attaching flexible printing plates to plate cylinders of rotary printing machines
DE1561082A1 (en) * 1967-06-20 1970-04-16 Albert Schnellpressen Device for clamping the printing cylinder elevator on printing machines
DE2341326C3 (en) * 1973-08-16 1977-07-28 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Multi-color sheet-fed rotary press with perforating device
DE3109859C2 (en) * 1981-03-14 1983-05-11 Albert-Frankenthal Ag, 6710 Frankenthal Blanket tensioning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5562036A (en) * 1994-07-14 1996-10-08 Koenig & Bauer Aktiengesellschaft Device for securing packings in printing cylinders
EP0695635A3 (en) * 1994-07-14 1997-09-24 Koenig & Bauer Albert Ag Device for fixing packings on printing cylinders

Also Published As

Publication number Publication date
ATE70778T1 (en) 1992-01-15
EP0339228A3 (en) 1990-01-03
EP0339228A2 (en) 1989-11-02
EP0339228B1 (en) 1991-12-27
ES2029357T3 (en) 1992-08-01
DE3813777C2 (en) 1992-12-03
DE58900612D1 (en) 1992-02-06

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee