EP0519067B1 - Vorrichtung zur verstellung einer druckplatte an ihrem plattenzylinder - Google Patents

Vorrichtung zur verstellung einer druckplatte an ihrem plattenzylinder Download PDF

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Publication number
EP0519067B1
EP0519067B1 EP92905716A EP92905716A EP0519067B1 EP 0519067 B1 EP0519067 B1 EP 0519067B1 EP 92905716 A EP92905716 A EP 92905716A EP 92905716 A EP92905716 A EP 92905716A EP 0519067 B1 EP0519067 B1 EP 0519067B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
plate
adjusting
lever arrangement
base plate
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
EP92905716A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0519067A1 (de
Inventor
Heinz Brechtel
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 EP0519067A1 publication Critical patent/EP0519067A1/de
Application granted granted Critical
Publication of EP0519067B1 publication Critical patent/EP0519067B1/de
Anticipated expiration legal-status Critical
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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
    • B41F27/005—Attaching and registering printing formes to supports
    • 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

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • DE-AS 1 536 954 describes a fine adjustment simultaneously for both tensioning rails, not for a single tensioning rail, as is preferred in the present invention.
  • the invention avoids these disadvantages. Starting from a device with the features of claim 1, it has the task of designing it in such a way that, with little design effort, a precise adjustment of the pressure plate is possible, which is achieved with as few steps as possible, without causing noticeable tension in the Pressure plate is coming.
  • the invention is characterized in that the two tensioning rails are fastened on a common base plate which can be lifted from a support in the cylinder channel for adjusting the register.
  • the base plate can be raised at both axial ends accordingly. However, it is sufficient if it is only lifted at one end.
  • the base plate is pivotally mounted at its other axial end.
  • the components of the adjustment device together with the tensioning rails are arranged on the common base plate according to claim 2, by a corresponding Pivoting of the base plate, the pressure plate lying against the plate cylinder can be released so that it lies loosely on the circumference of the plate cylinder and can be easily moved relative to it.
  • the displacement of the pressure plate is then carried out with the aid of the lever arrangement and the inclination caused thereby is very precise, because the pivot point of the lever arrangement, contrary to the prior art described at the outset, is provided centrally between the two articulation points of the lever arrangement on the edges of the pressure plate.
  • the pivoting of the lever arrangement is accomplished in a structurally simple manner in that an adjusting spindle acts on the lever arrangement, via which a force is exerted on the lever arrangement approximately in the tangential direction. This arrangement also results in the introduction of force with optimal lever arms.
  • the figures indicate a plate cylinder 1 with an axial cylinder channel 2. Lateral shoulders 3 are formed in the cylinder channel, on which a base plate 4 is placed. Edge strips 5 are firmly connected to the tangential ends of the base plate. Tensioning screws 6 are provided, which are screwed into the threads of tensioning rails 7. The clamping screws are fixed in the edge strips 5, so that the tangential position can be adjusted in the direction of the double arrow 8 of FIG. 2 of the clamping rails via the clamping screws.
  • Tension flaps 9 work together with the tensioning rails, so that the free edges of a pressure plate can be clamped between the actual tensioning rails and their tensioning flaps.
  • the tension flaps 9 are moved with their tension rails 7. (The head of the right clamping screw 6 is not shown in FIG. 3 for reasons of better clarity.)
  • a lever arrangement 10 (cf. FIG. 1) is fastened to the base plate 4 such that it can be rotated about an axis 11.
  • the axis 11 is located in the center line 12 of the cylinder channel 2.
  • rollers 13, 14, 15 are fastened, of which the rollers 13, 14 engage in elongated holes 16 on the tensioning rails 7, while the roller 15 between flanges 17 of an adjusting spindle 18 lies.
  • the base plate 4 can be adjusted in the radial direction, ie it can be raised or lowered.
  • a height adjustment spindle 19 indicated in FIG. 1 is provided, which is shown in detail in FIG. 3. Out of it shows that it is screwed into a threaded bore 20 in the plate cylinder.
  • the base plate 4 is adjusted via a locking ring 21 when the height adjustment spindle 19 is turned up or down in the direction of the arrow 22, and with it the tensioning rails and the other components fastened to the base plate.
  • Fig. 3 also shows that the adjusting spindle 19 can either be rotated by hand, for which purpose a polygonal key can engage the spindle at item 23, or it can also be adjusted by a motor, for example via a toothed wheel or sprocket 24.
  • the side adjustment spindle 18 can also be adjusted by hand or by motor, for which FIG. 3 likewise shows a gearwheel or chain wheel 25.
  • the base plate 4 is rotatably and pivotably mounted on the plate cylinder at item 26.
  • This bearing 26 (see FIG. 1) is designed, for example, as a ball bearing such that the base plate can be pivoted laterally in accordance with the adjustment of the adjusting spindle 18 and can be pivoted in height in accordance with the rotation of the height adjusting spindle 19.
  • the adjusting spindle 18 is rotated so that the lever arrangement 10 is displaced in the direction of the arrows 28 in FIG. 1 to the right or left via the roller 15.
  • the resulting pivoting of the lever arrangement 10 about the pivot axis 11 causes the tensioning rails 7 to be displaced in opposite directions in the axial direction, i.e. in the direction of the double arrow 29 in Fig. 1.
  • the printer is now making a proof print and if the register is still not reached, make one or more more skew adjustments as described above until the register is reached. After each correction, the height adjustment spindle 19 must be tightened.
  • the base plate 4 is brought back into contact with the shoulders 3 and thereby fixed on the cylinder. Now the printing plate is clamped on the plate cylinder again and you can print with registration.
  • the device described works briefly as follows: First, the height adjustment spindle 19 is released. Now you can operate the adjusting spindle 18. When this adjusting spindle 18 is rotated, the lever arrangement 10 is pivoted (clockwise or counterclockwise) and with it the two tensioning rails 7, 9 are displaced in opposite directions in parallel to one another. At the same time, one of the tensioning rails is adjusted in the tangential direction via the thread 32 in FIG. 3 and thus the base plate 4 connected to it (and with the base plate 4 in turn the tensioning rails connected to it).
  • the spindle 19 has to be re-tensioned and the printer checks the correction now carried out. Subsequently, it may be necessary to make further corrections, if necessary also with the aid of the adjusting screw 31, which displaces the sliding block 30 accordingly. (The sliding block only moves the tensioning rail working with it; not the other tensioning rail as well.)
  • the device is characterized by an (opposite) parallel displacement of the two tensioning rails, without any tension being generated in the printing plate.
  • a fine correction must be carried out before fixing, for which purpose the elongated hole 16 belonging to the roller 13 is formed in a sliding block 30 which has a threaded bore into which an adjusting screw 31 engages with its threaded end. If the adjustment screw is rotated, a sliding block 30 is accordingly finely displaced in the axial direction (arrow 29) and thus the relevant clamping rail 7 (upper clamping rail in FIG. 1).
  • the device according to the invention is easy to use and results in a very precise inclination adjustment. You have to release the pressure plate - with the help of the height adjustment spindle 19 - and can then bring about the necessary inclined adjustment by actuating the adjustment spindle 18. A circumferential correction is hereby achieved at the same time.
  • the described device can also be designed differently in structural details.
  • the lever arrangement 10 is indicated in FIG. 1 by a circle. But it can also have other forms, for example that of a three-armed lever.
  • Fig. 3 also shows that the adjusting spindle 18 engages with its threaded end in a counter thread of a threaded piece 32 which is fixed in a through hole of the relevant edge strip 5. At the other end, the adjusting spindle 18 passes through a through hole in the other edge strip 5.
  • FIG. 1 shows the circumstances to scale; the distance between the adjusting device with the lever arrangement 10 and the height adjustment spindle 19 or the bearing 26 is larger than indicated in FIG. 1, because the height adjustment spindle 19 and the bearing 26 are located in the region of the axial ends of the cylinder channel 2.
  • the tensioning rails 7 can be moved in the direction of the arrow 29.
  • the tensioning screws 6 do not prevent this movement because they are moved together with the tensioning rails. Otherwise, the displacement is generally only a few millimeters.
  • Fig. 1 also shows that the adjusting spindle 18 rests with its tips on the walls of the cylinder channel 2. Nevertheless, the roller 15 can be moved in the direction of the arrow 28, because when the adjusting spindle 18 is turned, the entire tensioning mechanism is moved in the channel. This shift is also only a few millimeters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP92905716A 1991-01-09 1991-12-28 Vorrichtung zur verstellung einer druckplatte an ihrem plattenzylinder Expired - Lifetime EP0519067B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4100408A DE4100408C1 (enrdf_load_stackoverflow) 1991-01-09 1991-01-09
DE4100408 1991-01-09
PCT/EP1991/002518 WO1992012012A1 (de) 1991-01-09 1991-12-28 Vorrichtung zur verstellung einer druckplatte an ihrem plattenzylinder

Publications (2)

Publication Number Publication Date
EP0519067A1 EP0519067A1 (de) 1992-12-23
EP0519067B1 true EP0519067B1 (de) 1995-01-25

Family

ID=6422716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92905716A Expired - Lifetime EP0519067B1 (de) 1991-01-09 1991-12-28 Vorrichtung zur verstellung einer druckplatte an ihrem plattenzylinder

Country Status (5)

Country Link
US (1) US5337486A (enrdf_load_stackoverflow)
EP (1) EP0519067B1 (enrdf_load_stackoverflow)
JP (1) JPH07115457B2 (enrdf_load_stackoverflow)
DE (2) DE4100408C1 (enrdf_load_stackoverflow)
WO (1) WO1992012012A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134309C2 (de) * 1991-10-17 1999-03-04 Kba Planeta Ag Einrichtung zum Schnellaufspannen von Druckplatten
DE9318599U1 (de) * 1993-12-04 1994-02-24 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Vorrichtung zum Verschwenken von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen
DE19956833B4 (de) * 1999-11-12 2009-04-23 Dr. Johannes Heidenhain Gmbh Winkelmeßsystem
JP3977643B2 (ja) * 2002-01-07 2007-09-19 大日本スクリーン製造株式会社 画像記録装置
US7397493B2 (en) * 2005-09-23 2008-07-08 Lexmark International, Inc. Laser printhead having a mechanical skew correction mechanism

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1536954B2 (de) * 1966-04-07 1971-08-12 Adamovske strojirny, N P , Adamov (Tschechoslowakei) Einrichtung zur gleichsinnigen schwenkverstellung der beiden enden einer biegsamen druckplatte
DE2105633A1 (de) * 1971-02-06 1972-08-10 Koenig & Bauer Schnellpressfab Plattenspannvorrichtung bei Stahlstichmaschinen
US4259904A (en) * 1979-07-23 1981-04-07 Heinz Metje Alignment system for offset printing presses
DE3516682A1 (de) * 1985-05-09 1986-11-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum parallelen spannen von druckplatten auf dem plattenzylinder von druckmaschinen
DE3604209A1 (de) * 1986-02-11 1987-08-13 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
DE3616425A1 (de) * 1986-05-15 1987-11-19 Basf Ag Vorrichtung zum spannen von druckplatten
DE3731642A1 (de) * 1987-09-19 1989-03-30 Koenig & Bauer Ag Plattenschraenkvorrichtung
DE68914824T2 (de) * 1989-03-17 1994-09-15 Sumitomo Heavy Industries Vorrichtung zum Befestigen einer lithographischen Druckplatte für Druckmaschinen.

Also Published As

Publication number Publication date
DE4100408C1 (enrdf_load_stackoverflow) 1992-05-14
US5337486A (en) 1994-08-16
WO1992012012A1 (de) 1992-07-23
DE59104428D1 (de) 1995-03-09
EP0519067A1 (de) 1992-12-23
JPH07115457B2 (ja) 1995-12-13
JPH05504525A (ja) 1993-07-15

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