EP0232730B1 - Vorrichtung zum Aufspannen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen - Google Patents

Vorrichtung zum Aufspannen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen Download PDF

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Publication number
EP0232730B1
EP0232730B1 EP87100350A EP87100350A EP0232730B1 EP 0232730 B1 EP0232730 B1 EP 0232730B1 EP 87100350 A EP87100350 A EP 87100350A EP 87100350 A EP87100350 A EP 87100350A EP 0232730 B1 EP0232730 B1 EP 0232730B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
plate
cam
printing plate
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87100350A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0232730A2 (de
EP0232730A3 (en
Inventor
Willi Jeschke
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to AT87100350T priority Critical patent/ATE74826T1/de
Publication of EP0232730A2 publication Critical patent/EP0232730A2/de
Publication of EP0232730A3 publication Critical patent/EP0232730A3/de
Application granted granted Critical
Publication of EP0232730B1 publication Critical patent/EP0232730B1/de
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
    • B41F27/1231—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/16—Registering devices with means for displacing the printing formes on the cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/40—Adjusting means for printing plates on the cylinder
    • B41P2227/43—Adjusting means for printing plates on the cylinder diagonally

Definitions

  • the invention relates to a device for clamping flexible printing plates on the plate cylinder of rotary printing presses according to the preamble of claim 1.
  • DE-PS 1 536 954 shows a device for pivoting or rotating a flexible pressure plate on the plate cylinder, in which the pressure plate is held at both ends in the circumferential direction by means of tensioning rails.
  • the two plate ends with the tensioning rails can be moved in the opposite direction by means of an adjusting device, so that the pressure plate is rotated on the plate cylinder.
  • Slanting slots are used to guide the tensioning rails, into which guide bolts engage.
  • the tensioning rails perform a certain pivoting movement during their axial movement, which should correspond to the rotational movement of the two plate ends.
  • the disadvantage of this known embodiment is that the device can only be operated when it is at a standstill.
  • the further known DE-PS 893 343 also shows a clamping device for printing plates, in which the individual clamping rails can be moved in the axial direction separately and independently of one another via eccentrics and a series of intermediate members loaded with play.
  • a middle pivot enables the tensioning rails to pivot according to the axial displacement of the pressure plate end. Even with this plate tension, the clamping screws must first be loosened to enable the pressure plate to be moved.
  • this embodiment has the further disadvantage that it is only suitable for relatively small sheet formats, such as for small offset printing machines with the perforated metal foils used here.
  • the printing unit of a sheet-fed rotary printing machine shown in FIG. 1 essentially consists of a plate cylinder 1, a rubber cylinder 2 and a printing cylinder 3, the sheets to be printed being printed between the rubber cylinder 2 and the printing cylinder 3.
  • a transfer drum 4 transfers the sheets fed to the printing cylinder 3 and a downstream transfer drum 5 takes the sheets from the printing cylinder 3 and feeds them to the next printing unit, with the sheet transport itself known manner by means of rows of grippers.
  • An inking unit 6 and a dampening unit 7 are assigned to the plate cylinder, the dampening unit 7 receiving the dampening solution from a dampening solution tank 8 and a dampening roller 9, and the inking unit 6 receiving the ink from an ink fountain 10 from an ink fountain roller 11.
  • the plate cylinder 1 shown in FIG. 2 consists of a cylinder body 12, the steering knuckles 13, 14 of which are mounted on bearings 15 on both sides in the machine side frames 16, 17.
  • bearers 18 are provided on both sides of the cylinder body 12.
  • a flexible pressure plate 19 (FIG. 4) is clamped onto the cylinder body 12, which in turn is clamped over clamping rails 20, 21. Both tensioning rails 20, 21 are arranged in a pit 22, which is provided in the cylinder body 12 (FIGS. 4-6).
  • both tensioning rails 20, 21 are articulated at their two ends via an angle lever 23, 24 each.
  • the angle levers 23, 24 are pivotally mounted in the pit 22 of the cylinder body 12 on a bearing pin 25 (FIG. 6).
  • the bearing pin 25 is fastened in the bottom of the pit 22 via a thread 26.
  • a fitting sleeve 27 is provided, which, in conjunction with a disk 28, ensures exact guidance of the angle lever 23, 24.
  • the flexible pressure plate 19 to be clamped on the cylinder means is angled at its two plate ends 32, 33 and is hooked to the tensioning rails 20, 21 with the angled part (FIG. 4).
  • the two angled plate ends 32, 33 are held by spring elements 34 in order to prevent them from slipping out unintentionally.
  • a plurality of compression springs 35 are provided between the tensioning rails 20, 21 and the cylinder body 12.
  • the compression springs 35 are arranged in recesses 36 on the cylinder body 12 and in receptacles 37 on the tensioning rails 20, 21.
  • a roller lever 38 is attached to the tensioning rail 20 on both sides according to FIG. 2, each of which carries a cam roller 39, which in turn is provided with a frustoconical bevel 40 in the outer region.
  • the bevels 40 of the two cam rollers 39 cooperate with a control cam 41, which are mounted on bearings 42 on the machine side frames 16, 17.
  • the two control cams 41 are pivoted or adjusted toward the cam rollers 39 by the same stroke, so that an equal pressure is exerted on them, and the tensioning rail 20 via the two roller levers 38 can be pivoted about their longitudinal axis in the ball joint bearings 29.
  • coupling elements 43 are provided which are fastened on one side in the tensioning rail 21.
  • recesses 44 are provided, in the area of which the coupling elements 43 are supported on supports 45 which are fastened to the tensioning rail 20.
  • a cover plate 46 is arranged above the clamping rails 20, 21 so that when the same is pivoted back into the clamping position for the pressure plate 19, the two angled plate ends 32, 33 come under the plate 46 and a gap is formed which corresponds to the thickness of the pressure plate, so that the two ends are secured against sliding off the tensioning rails 20, 21.
  • the cover plate 46 is fastened to centering bodies 47, which in turn are fastened to the base of the pit 22 by means of screws 48.
  • the cover plate 46 is precisely positioned by means of fitting screws 49, so that the two pressure plate ends 32, 33 can be easily attached to the tensioning rails 20, 21.
  • 5 shows the two clamping rails 20, 21 in their clamping position, the two plate ends 32, 33 being pivoted in under the cover plate 46.
  • a modification of the embodiment shown in FIG. 2 uses a roller lever 50 on one side of the tensioning rail 20 according to FIG. 3, which also carries a cam roller 51, the running surface of which is designed as a V-shaped recess 52.
  • the curved surface 53 which is also V-shaped, engages in this V-shaped recess 52 Control curve 54 a.
  • the control cam can be moved toward or away from the cam roller 51 for releasing or tensioning a pressure plate, so that a tilting movement is transmitted to the two tensioning rails 20 and 21 via the roller lever 50.
  • the tensioning rail 20 is displaced in the axial direction of the plate cylinder 1 via the cam rollers 39, 51 and the roller levers 38, 50.
  • This lateral adjustment of the tensioning rail 20 is transmitted to the tensioning rail 21 in the opposite direction via the angle levers 23, 24.
  • the angle levers 23, 24 can be designed as isosceles levers with a 90 ° leg angle, so that a given pivot point P for the rotational movement of the pressure plate 19 results at the respective distance between the two bearing bolts 25.
  • the connections are via screw bolts 31 in the central position on lines 66, which run at right angles to the longitudinal axis of the plate cylinder.
  • the pivot point P around which the pressure plate is moved when the twist register is adjusted is at a specific point on the pressure plate 19.
  • Die in Fig. 2 dash-dot extensions of the legs of the angle lever 23.24 to the point P are to be understood as a development on the cylinder surface, the upper and lower pivot point P are located at the same location on the pressure plate 19. Described in terms of transmission technology, P is the instantaneous pivot point of the pressure plate or the tensioning rails, which are the control arms of a multi-unit transmission.
  • control cams 41 To change the lateral position of the two clamping rails 20, 21, one of the control cams 41 is moved according to FIG. 2 to one machine side and the other in the opposite direction to the other machine side. As a result, an actuating force is introduced in the axial direction of the plate cylinder via the cam rollers 39.
  • control cams can also be used which have the shape of a race and can be displaced in the axial direction of the plate cylinder via a corresponding bearing. This also makes it possible to axially shift both races simultaneously and in the same direction to incline the pressure plate, so that the two tensioning rails 20, 21 are thereby adjusted.
  • the embodiment according to FIG. 3 uses a control cam 54, the running surfaces of which are chamfered on both sides, the V-shaped recess 52 of the cam roller 51 rolling thereon.
  • the bearing 55 is designed such that the control cam 54 can either be adjusted radially or can be pivoted toward the plate cylinder 1.
  • a servomotor 56 which is fastened to the machine side frame 17. In the exemplary embodiment shown, this is done by means of a threaded guide 57.
  • FIG. 4 shows the position of the plate cylinder in which the leading end 33 of the printing plate 19 is hooked in, and after one turn of the plate cylinder 1 the trailing plate end 32 is also hooked in and the printing plate is tensioned.
  • the curve 54 is displaced in the longitudinal direction on the support bolt 58 in the region of the elongated holes 59, so that the curved surface 53, which is bevelled on both sides, more or less swivels the roller lever 50, and thus releases or tensiones the pressure plate 19.
  • a hydraulic or pneumatic control cylinder 60 is provided, the piston rod 61 of which actuates an angle lever 62 which is pivotably mounted on the machine side frame via a pin 63.
  • the opposite leg of the angle lever 62 shows a fork-shaped opening 64, by means of which a pin 65 fastened to the control cam 54 is actuated.
  • the control cam 54 can thus be moved into the respectively required position in a simple manner via the control cylinder 60.
  • the rotation of the pressure plate for register correction is normally carried out with a relaxed pressure plate 19.
  • the relaxation is achieved in that in the embodiment according to FIG. 2, the roller levers 38 are pivoted somewhat via both control cams 41, so that both tensioning rails 20, 21 perform a slight tilting movement.
  • the left or right control curve for example moved toward the cylinder center, and the opposite control curve 41 moves back synchronously with it.
  • the tensioning rail 20 is moved to the left or right via the roller levers 38, and the opposite tensioning rail 21 is moved in the opposite direction via the angle levers 23, 24.
  • both control cams 41 are moved back, so that the pressure plate is clamped onto the cylinder body 12 under the force of the compression springs 35 via both tensioning rails 20, 21.
  • control cam 54 which has a beveled cam surface on both sides, so that both a pivoting of the roller lever 50 and a displacement of the same in the axial direction via the cam roller 51 Direction of the plate cylinder 1 is possible.
  • pressure is first exerted on the cam roller 51 via the cam 54 to relax the pressure plate, so that they are tilted to a small extent via the roller lever 50, the tensioning rail 20 and together with it the tensioning rail 21. As soon as the pressure plate is relaxed with this, e.g.
  • the control cam 54 is displaced in the axial direction of the plate cylinder via the servomotor 56, as a result of which the pressure plate is pivoted on the cylinder body 12 via the two tensioning rails 20, 21 in the manner described above. Depending on the slanted register deviation, this can be done in one direction or the other. After pivoting, the cam roller 51 is also relieved here, so that the pressure plate 19 is tensioned via the compression springs 35.
  • the operation of the embodiment shown in FIG. 4 uses the control cylinder 60 to release the printing plate 19 eg when the plate cylinder 1 is stationary, the control cam 54 is shifted to the right by a certain amount, so that the cam roller 51 and the roller lever 50 cause the two tensioning rails 20, 21 to tilt.
  • the lateral register adjustment (not shown) on the plate cylinder is then actuated, so that the cylinder body 12 is shifted to the left or right by a certain amount. This amount thus determines the rotation of the pressure plate 19 on the cylinder body 12.
  • the control cam 54 is moved back into the clamping position for the pressure plate 19, so that it is clamped again on the plate cylinder. After that, only the page register has to be moved back to the starting position.
  • the pressure and the application rollers are switched off first. A side register adjustment is then carried out by the required amount and the control cam 54 is then moved to the right. If the cam roller 51 comes into the area of the cam surface 53 during the next rotary movement, the pressure plate 19 is first relaxed by the run-up of the cam roller 51 and, at the same time, the pressure plate is pivoted by the lateral displacement of the recess 52 relative to the cam surface 53. When the cam roller 51 runs out of the cam surface 53, the pressure plate is then automatically stretched over the compression springs 35. The side register of the plate cylinder is moved back to the old position after the inclination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Centrifugal Separators (AREA)
  • Rotary Presses (AREA)
EP87100350A 1986-02-11 1987-01-13 Vorrichtung zum Aufspannen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen Expired - Lifetime EP0232730B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100350T ATE74826T1 (de) 1986-02-11 1987-01-13 Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863604209 DE3604209A1 (de) 1986-02-11 1986-02-11 Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
DE3604209 1986-02-11

Publications (3)

Publication Number Publication Date
EP0232730A2 EP0232730A2 (de) 1987-08-19
EP0232730A3 EP0232730A3 (en) 1989-11-29
EP0232730B1 true EP0232730B1 (de) 1992-04-15

Family

ID=6293828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100350A Expired - Lifetime EP0232730B1 (de) 1986-02-11 1987-01-13 Vorrichtung zum Aufspannen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen

Country Status (8)

Country Link
US (1) US4785736A (enrdf_load_stackoverflow)
EP (1) EP0232730B1 (enrdf_load_stackoverflow)
JP (1) JPS62187041A (enrdf_load_stackoverflow)
CN (1) CN87100627B (enrdf_load_stackoverflow)
AT (1) ATE74826T1 (enrdf_load_stackoverflow)
CA (1) CA1295180C (enrdf_load_stackoverflow)
DE (2) DE3604209A1 (enrdf_load_stackoverflow)
DK (1) DK166137B (enrdf_load_stackoverflow)

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DE3918215C1 (enrdf_load_stackoverflow) * 1989-06-03 1990-11-08 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
JP2926656B2 (ja) * 1989-09-13 1999-07-28 アキヤマ印刷機製造 株式会社 枚葉印刷機の版ひねり調整機構
DE3934334C1 (enrdf_load_stackoverflow) * 1989-10-14 1991-04-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3936446A1 (de) * 1989-11-02 1991-05-08 Miller Johannisberg Druckmasch Plattenzylinder einer druckmaschine
US5052120A (en) * 1990-04-16 1991-10-01 Eastman Kodak Company Sheet positioning, clamping, and tensioning means
JP2509511Y2 (ja) * 1990-05-25 1996-09-04 株式会社小森コーポレーション 印刷機の版万力装置
DE4100408C1 (enrdf_load_stackoverflow) * 1991-01-09 1992-05-14 Man Miller Druckmaschinen Gmbh, 6222 Geisenheim, De
DE4106677C1 (enrdf_load_stackoverflow) * 1991-03-02 1992-04-23 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
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DE4226565A1 (de) * 1991-08-16 1993-02-18 Koenig & Bauer Ag Einrichtung zum spannen und justieren von biegsamen druckplatten auf plattenzylindern von rotationsdruckmaschinen
DE4129373C2 (de) * 1991-09-04 1995-05-18 Roland Man Druckmasch Vorrichtung zur Passerverstellung an einem Plattenzylinder einer Druckmaschine
DE4134309C2 (de) * 1991-10-17 1999-03-04 Kba Planeta Ag Einrichtung zum Schnellaufspannen von Druckplatten
DE4134364A1 (de) * 1991-10-17 1993-04-22 Kba Planeta Ag Einrichtung zum lagegenauen schnellaufspannen von flexiblen druckplatten
DE4134365C2 (de) * 1991-10-17 1998-12-10 Kba Planeta Ag Einrichtung zum Schnellaufspannen von Druckplatten
DE4134310C2 (de) * 1991-10-17 2002-10-17 Koenig & Bauer Ag Einrichtung zum Schnellaufspannen von Druckplatten
DE4205460C2 (de) * 1991-12-20 2002-06-20 Koenig & Bauer Ag Verfahren und Vorrichtung zur Schieflagekorrektur von Druckplatten an Plattenzylindern von Bogenrotationsdruckmaschinen
DE4208320C2 (de) * 1991-12-20 2002-07-18 Koenig & Bauer Ag Verfahren und Vorrichtung zum Schieflagekorrektur von Druckplatten an Plattenzylindern von Bogenrotationsdruckmaschinen
DE4205276A1 (de) * 1992-02-21 1993-08-26 Roland Man Druckmasch Vorrichtung zum aufspannen einer druckplatte auf einen plattenzylinder
US5347928A (en) * 1992-10-29 1994-09-20 Sakurai Graphic Systems Corporation Plate clamping unit for offset press
DE4304328C2 (de) * 1993-02-13 2003-01-30 Heidelberger Druckmasch Ag Vorrichtung zum Aufspannen einer biegsamen Druckplatte auf einem Plattenzylinder einer Rotationsdruckmaschine
DE9318599U1 (de) * 1993-12-04 1994-02-24 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Vorrichtung zum Verschwenken von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen
US5419248A (en) * 1994-03-09 1995-05-30 Heidelberg Druckmaschinen Ag Adjustable alignment device for printing plates
CH689717A5 (fr) * 1998-06-02 1999-09-15 Bobst Sa Dispositif de positionnement d'un cliché flexible sur un cylindre porte-cliché.
JP3691314B2 (ja) * 1999-11-02 2005-09-07 理想科学工業株式会社 孔版印刷装置
US6494932B1 (en) * 2000-06-06 2002-12-17 Birch Mountain Resources, Ltd. Recovery of natural nanoclusters and the nanoclusters isolated thereby
US20030213387A1 (en) * 2002-05-14 2003-11-20 Heidelberger Druckmaschinen Ag Offset printing press with multi-image plate cylinder
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Also Published As

Publication number Publication date
ATE74826T1 (de) 1992-05-15
US4785736A (en) 1988-11-22
DK61687D0 (da) 1987-02-06
DE3604209A1 (de) 1987-08-13
EP0232730A2 (de) 1987-08-19
DE3604209C2 (enrdf_load_stackoverflow) 1992-01-16
CN87100627A (zh) 1987-09-02
DE3778175D1 (de) 1992-05-21
JPS62187041A (ja) 1987-08-15
DK166137B (da) 1993-03-15
EP0232730A3 (en) 1989-11-29
CA1295180C (en) 1992-02-04
CN87100627B (zh) 1988-08-10
DK61687A (da) 1987-08-12

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