EP0443350A1 - Dispositif de tension d'un cliché flexible sur un cylindre d'une machine d'impression rotative - Google Patents

Dispositif de tension d'un cliché flexible sur un cylindre d'une machine d'impression rotative Download PDF

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Publication number
EP0443350A1
EP0443350A1 EP91101248A EP91101248A EP0443350A1 EP 0443350 A1 EP0443350 A1 EP 0443350A1 EP 91101248 A EP91101248 A EP 91101248A EP 91101248 A EP91101248 A EP 91101248A EP 0443350 A1 EP0443350 A1 EP 0443350A1
Authority
EP
European Patent Office
Prior art keywords
spindle
channel
clamping
cylinder
segment
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
EP91101248A
Other languages
German (de)
English (en)
Other versions
EP0443350B1 (fr
Inventor
Klaus T. Reichel
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
Publication of EP0443350A1 publication Critical patent/EP0443350A1/fr
Application granted granted Critical
Publication of EP0443350B1 publication Critical patent/EP0443350B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F27/1237—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 perpendicular to support surface

Definitions

  • the invention relates to a device for mounting a flexible printing form on a cylinder of a rotary printing press.
  • a device for clamping a flexible printing plate on the plate cylinder of a rotary printing press in which a rotatable in a groove or pit of the plate cylinder winding rod or spindle by means of a gap introduced into the spindle, the rear end of the Pressure plate detected and in which the spindle with its outer surface jammed the hook-like bent front end of the pressure plate at the edge of the pit.
  • the rear end of the pressure plate has a double bend, the section forming the plate edge being inserted into the gap of the spindle.
  • This device has the disadvantage that the channel formed in the surface of the cylinder must be relatively wide, so that the pressure plate can be removed quickly and safely when unclamping.
  • this device has the disadvantage that the rear end of the pressure plate is permanently deformed so much by the use of a winding rod that the pressure plate cannot be used repeatedly in every case.
  • the object of the invention is therefore to provide a device for clamping flexible printing forms on cylinders so that the rear end of the printing form need only be bent easily and at an obtuse angle, so that the channel into which the two ends of the printing form at Clamping can be inserted, can be made narrower, and that the printing form can be retensioned.
  • the clamping device shown in FIG. 1 essentially consists of a pit introduced into a plate cylinder 1, which has an insertion channel 2, hereinafter also referred to briefly as channel 2, and an inner cylindrical channel 3 running parallel to the cylinder axis (not shown) also referred to as clamping channel 3, and a clamping spindle 4 arranged axially parallel to the inner cylindrical channel 3 is formed.
  • the effective width of the channel 2 is identified by the reference number 17.
  • One wall of the channel 2 has a segment 5 in the form of a segment of a circle, which is at the same time a segment of the circle of the circumferential circle of the clamping channel 3.
  • the clamping spindle 4 has a cylindrical spindle body 6 and bearing journal 7, the axis 8 of the spindle body 6 being offset with respect to the axis 9 of the bearing journal 7.
  • the clamping spindle 4 is arranged in the clamping channel 3 so that the axis 9 of the journal 7 is identical to the axis of the clamping channel 3. This results in an eccentric arrangement of the spindle body 6 in the clamping channel 3.
  • a hole 11 or groove is made radially approximately in the middle of the clamping spindle, in which a support element 12 is arranged to limit the deflection of the clamping spindle.
  • the support element 12 has a pin 13, a plurality of superimposed disc springs 14 guided by the pin 13 and a cylindrical roller 15 oriented axially parallel to the clamping spindle 4.
  • the cylindrical roller 15 is pressed by the plate springs 14 against the wall of the clamping channel 3 and thus counteracts the deflection of the clamping spindle 4.
  • the pin 13 limits the deflection of the tensioning spindle 4.
  • the support element 12 can optionally also be formed by a helical spring or another elastic element and a cylindrical roller or ball lying directly on the helical spring or running in a roller cage resting on the helical spring. In this case, the deflection limitation results from the length of the fully compressed coil spring.
  • the clamping spindle 4 When a printing plate 16 is clamped onto the plate cylinder 1, the front end of the printing plate 16 bent forward at an acute or right angle and the rear end of the printing plate 16 bent forward at an obtuse angle are inserted into the channel 2. Then the clamping spindle 4 is rotated in a manner known per se, for example by means of a worm gear, so that the spindle body 4 grasps the two ends of the pressure plate 16 and presses against the segment 5 in the form of a segment of a circle. 1, the clamping spindle 4 is thus rotated counterclockwise.
  • the surface roughness of the spindle body 6 and the roughness of the two ends of the pressure plate 16 and of the section 5 cause the two ends of the pressure plate 16 to be drawn as far as possible into the channel 2 and to be jammed.
  • the surface roughness of the spindle body 6 required here can be ensured either by the standard roughness or by a separate manufacturing step, such as flanging.
  • FIG. 2 shows a schematic side view of a clamping spindle that can be used in the clamping device according to a second embodiment of the invention.
  • the representation of the plate cylinder 1, the channel 2 and the clamping channel 3 and the plate ends of the pressure plate 16 is omitted for the sake of clarity, since this, like the arrangement and the functional principle of the clamping spindle 24, correspond to the corresponding features of the clamping spindle 4 from the first exemplary embodiment correspond.
  • the clamping spindle 24 has a spindle body 26, bearing journal 27 and a support section 30 located on the spindle body 26.
  • the axis 28 of the spindle body 26 is offset from the axis 29 of the bearing pin 27, so that the clamping spindle 24 acts as an eccentric.
  • the approximately in the middle of the spindle body 26 arranged support section 30 is cylindrical, its axis of rotation is identical to the axis of rotation 29 of the bearing journal 27 and its diameter is such that the support section 30 is arranged in the clamping channel 3 with a sliding fit, that is, in the clamping channel 3 is rotatably mounted.
  • the clamping spindle 24 is correspondingly rotated in the first exemplary embodiment by means of a device known per se, such as a worm gear, in such a way that the eccentrically mounted spindle body 26 detects the two ends of the pressure plate 16 and so on pulls as far as possible into the channel 2 and jammed it on the circular segment-shaped section 5 of the channel 2.
  • a device known per se such as a worm gear
  • Fig. 3 shows a schematic representation of an end view of the clamping spindle shown in Fig. 2. This view is shown in a highly schematic manner, in particular to show the flattening of the support section 30.
  • the support section 30 is flattened from a reference point 31, at which the circumferential circle of the support section 30 and the circumferential circle of the spindle body 26 touch, from both directions over a range of 90 ° in each case.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP91101248A 1990-02-17 1991-01-31 Dispositif de tension d'un cliché flexible sur un cylindre d'une machine d'impression rotative Expired - Lifetime EP0443350B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4005093A DE4005093C1 (en) 1990-02-17 1990-02-17 Forme clamp for printing cylinder - has channel in cylinder with spindle to clamp form eccentrically
DE4005093 1990-02-17

Publications (2)

Publication Number Publication Date
EP0443350A1 true EP0443350A1 (fr) 1991-08-28
EP0443350B1 EP0443350B1 (fr) 1994-12-21

Family

ID=6400437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101248A Expired - Lifetime EP0443350B1 (fr) 1990-02-17 1991-01-31 Dispositif de tension d'un cliché flexible sur un cylindre d'une machine d'impression rotative

Country Status (5)

Country Link
US (1) US5062363A (fr)
EP (1) EP0443350B1 (fr)
JP (1) JP3001995B2 (fr)
CA (1) CA2034427C (fr)
DE (2) DE4005093C1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234332A1 (de) * 1992-10-12 1994-04-14 Heidelberger Druckmasch Ag Aufspannvorrichtung zum Befestigen einer biegsamen Druckform auf der Mantelfläche eines Zylinders
DE4238343C2 (de) * 1992-11-13 2003-03-27 Kocher & Beck Gmbh & Co Rotati Spannvorrichtung für ein Klischee
DE4401201C2 (de) * 1994-01-18 1996-08-01 Koenig & Bauer Albert Ag Einrichtung zum Festhalten eines bogenförmigen Trägers
US5485784A (en) * 1994-06-28 1996-01-23 Walschlaeger, Sr.; Alan R. Printing plate cylinder with universal lockup apparatus
DE19509561C2 (de) * 1995-03-16 1997-10-23 Koenig & Bauer Albert Ag Vorrichtung zum Klemmen von Platten auf einem Zylinder
CH691452A5 (de) * 1995-05-05 2001-07-31 Koenig & Bauer Ag Vorrichtung zum Befestigen einer Gummitucheinheit auf einem Gummizylinder.
DE19521645C2 (de) * 1995-06-14 1998-07-09 Koenig & Bauer Albert Ag Einrichtung für eine schlitzförmige Haltevorrichtung
DE19524296C2 (de) * 1995-07-06 1997-05-15 Koenig & Bauer Albert Ag Zylinder
FR2737149B1 (fr) * 1995-07-25 1997-10-17 Heidelberg Harris Sa Dispositif de fixation d'une plaque d'impression sur un cylindre porte-plaque
DE19533178C2 (de) * 1995-09-08 1997-06-26 Koenig & Bauer Albert Ag Zylinder
DE29600845U1 (de) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE19606744C2 (de) * 1996-02-23 1998-12-10 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
US5735211A (en) * 1996-06-13 1998-04-07 Mark Andy, Inc. Clamping and tensioning device for printing plates
US5749298A (en) * 1997-06-10 1998-05-12 Reeves Brothers, Inc. Arrangement for securing a printing blanket to a cylinder
US6131513A (en) * 1998-10-23 2000-10-17 Heidelberger Druckmaschinen Ag Printing press with simple lock-up plate cylinder
US6378430B1 (en) 1999-10-15 2002-04-30 King Press Corporation Cylinder with plate gripping device
DE10024331B4 (de) 2000-05-17 2005-08-18 Koenig & Bauer Ag Vorrichtung zum Klemmen und/oder Spannen
US6739961B2 (en) * 2001-08-02 2004-05-25 Donald E. Haney Abrasive band tightening apparatus
TWM260360U (en) * 2004-08-02 2005-04-01 Ruei-Sen Liau Tightening device for winding emery belt of spindle
JP4653981B2 (ja) * 2004-08-10 2011-03-16 三菱重工印刷紙工機械株式会社 印刷機のブランケット胴
WO2012026934A1 (fr) * 2010-08-25 2012-03-01 Hewlett-Packard Development Company, L.P. Substrat de support
JP6324076B2 (ja) * 2014-01-10 2018-05-16 三菱重工機械システム株式会社 ブランケット締め付け装置、ブランケット胴、印刷機
US20220168868A1 (en) * 2020-12-01 2022-06-02 Fortune Extendables Corp. Abrasive wheel which can be provided with a sandpaper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279204A (en) * 1940-12-13 1942-04-07 Meisel Press Mfg Company Printing cylinder
EP0037754A1 (fr) * 1980-03-21 1981-10-14 Creusot-Loire Dispositif pour corriger la position d'une plaque portée par un cylindre d'une machine d'impression
US4495865A (en) * 1983-03-15 1985-01-29 Komori Printing Machinery Co., Ltd. Plate clamping device of web-fed rotary printing press
DE3339185A1 (de) * 1983-10-28 1985-05-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum spannen von platten auf einen formzylinder einer rotationsdruckmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196213B (de) * 1959-11-12 1965-07-08 American Type Founders Co Inc Biegsame Druckplatte zum Aufspannen auf den Plattenzylinder einer Rotationsdruckmaschine und Biegevorrichtung zur Herstellung dieser Druckplatte
US3234694A (en) * 1963-11-06 1966-02-15 John F Vosburg Abrasive strip holding and tightening mechanism
DE1228627B (de) * 1964-04-25 1966-11-17 Roland Offsetmaschf Vorrichtung zum Befestigen einer biegsamen Druckplatte auf dem Formzylinder einer Rotationsdruckmaschine
DE1561005A1 (de) * 1966-10-01 1970-04-16 Maschf Augsburg Nuernberg Ag Vorrichtung zum Spannen von biegsamen Druckplatten auf dem Formzylinder von Rotationsdruckmaschinen
DE3326215C2 (de) * 1983-07-21 1986-04-03 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufspannen einer Druckplatte oder eines Gummituches
DE330736T1 (de) * 1988-02-29 1990-02-08 Rockwell International Corp., Pittsburgh, Pa. Spannungsloser plattenverschluss.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279204A (en) * 1940-12-13 1942-04-07 Meisel Press Mfg Company Printing cylinder
EP0037754A1 (fr) * 1980-03-21 1981-10-14 Creusot-Loire Dispositif pour corriger la position d'une plaque portée par un cylindre d'une machine d'impression
US4495865A (en) * 1983-03-15 1985-01-29 Komori Printing Machinery Co., Ltd. Plate clamping device of web-fed rotary printing press
DE3339185A1 (de) * 1983-10-28 1985-05-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum spannen von platten auf einen formzylinder einer rotationsdruckmaschine

Also Published As

Publication number Publication date
JP3001995B2 (ja) 2000-01-24
EP0443350B1 (fr) 1994-12-21
US5062363A (en) 1991-11-05
JPH058375A (ja) 1993-01-19
DE4005093C1 (en) 1991-06-20
CA2034427A1 (fr) 1993-08-17
DE59103943D1 (de) 1995-02-02
CA2034427C (fr) 1993-08-17

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