EP0255653B1 - Druckplattenbefestigungs- und Spannvorrichtung - Google Patents

Druckplattenbefestigungs- und Spannvorrichtung Download PDF

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Publication number
EP0255653B1
EP0255653B1 EP87110582A EP87110582A EP0255653B1 EP 0255653 B1 EP0255653 B1 EP 0255653B1 EP 87110582 A EP87110582 A EP 87110582A EP 87110582 A EP87110582 A EP 87110582A EP 0255653 B1 EP0255653 B1 EP 0255653B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
bar
magnets
clamping
pit
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
EP87110582A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0255653A3 (en
EP0255653A2 (de
Inventor
Heinrich Konrad Grosshauser
Georg Schneider
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0255653A2 publication Critical patent/EP0255653A2/de
Publication of EP0255653A3 publication Critical patent/EP0255653A3/de
Application granted granted Critical
Publication of EP0255653B1 publication Critical patent/EP0255653B1/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
    • 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
    • B41F27/1243—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 pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the invention relates to a device for fastening and tensioning flexible pressure plates according to the preamble of claim 1.
  • DE-A 1 936 396 shows a plate fastening and tensioning device in which a support block is fastened to the circumference of a plate cylinder in a rectangular pit extending parallel to its axis.
  • the plate fastening and tensioning device consists of two tensioning bars, each of which is pivotally mounted on its axis at its lower end. At their upper end they each have a slot pointing counter to the tensioning direction for receiving bent printing plate ends. Due to the force of compression springs, which are mounted in bores in the walls of the support block and act horizontally on the outer walls of the clamping strips, they are pivoted against each other about their respective axis of rotation from the inner wall of the pit.
  • FIG. 7 218 664 Another plate clamping device is shown in DE-U 7 218 664, in which a plate clamping device is arranged in a trapezoidal pit.
  • the plate clamping device consists of two strips, each of which is pivotally supported at the bottom of the pit with its lower end. At their upper end they have hooks inclined in the clamping direction, which are hooked into a pre-punched start and end edge of a pressure plate.
  • the plate tension is applied to a bar by a leaf spring which is directed so that it pivots the bar towards the center of the groove.
  • the other bar is loaded with the force of a spiral spring. This is supported horizontally on a support block in the middle of the groove and pivots the tensioning strip in the direction of an inner wall of the pit.
  • the strips are adjusted against the force of the respective springs by rotating a camshaft using a tool.
  • the camshaft which acts against the force of the spiral spring, is arranged parallel to the groove in a side wall of the plate cylinder, the other camshaft, which counteracts the force of the leaf spring, is mounted in the support block in the middle of the pit.
  • a plate clamping device with a single clamping shaft is shown in DE-U 8 413 364.
  • the clamping shaft is arranged in a known manner in an axially parallel pit on the circumference of a plate cylinder.
  • a torsion bar spring is provided to generate a tensioning force, so that the tensioning shaft is deflected clockwise or counterclockwise, and the tensioning shaft is deflected clockwise or counterclockwise against the force of the torsion bar spring.
  • the tensioning shaft has two opposing slots above its axis of rotation, into which an angled start or end of a pressure plate can optionally be hung. In its mouth part, the pit has two mounting edges fixed to the plate cylinder for receiving the beginning or end of the printing plate.
  • the pressure plate For tensioning, the pressure plate is hung with its beginning in the hooking edge pointing in the direction of the plate cylinder rotation.
  • the clamping shaft is then pivoted in the direction of rotation with a tool and the end of the pressure plate is hooked into the accessible slot in the clamping shaft.
  • the tensioning shaft When the tensioning shaft is released, it swings back into its starting position by the force of the torsion bar spring and tensions the pressure plate.
  • a disadvantage of the tensioning device described in DE-U 8 413 364 is that no holding device is provided for the tensioning device in the pivoted-out position, so that operating personnel only have one hand free to hang in the pressure plate, since the other is required to maintain the holding force to apply.
  • the invention has for its object to provide a device for fastening and tensioning a printing plate on a plate cylinder, in which no actuating shaft is required.
  • a first and second embodiment can be operated manually without tools or other aids.
  • each of the two strips can be used both as a clamping strip and as a clamping strip, so that the device can be used in both directions of rotation of the plate cylinder. All forces act between the clamping bars and the groove inner walls, so that on a support device between the clamping bars, d. H. can be dispensed with in the middle of the pit. For this reason, the width of the pit can be kept narrow, whereby the non-pressure areas can be kept small.
  • a third embodiment Fig. 5 only a single clamping bar is required, so that the width of the pit can be made even narrower.
  • a plate cylinder 1 is rotatably mounted with its two stub shafts 2 in frames of a rotary printing press.
  • a rectangular groove 3 extends on the circumference of the plate cylinder 1 parallel to its axis.
  • the groove 3 receives a support block 4, which has an axially parallel pit 5 which, in the upper part, in the region of the mouth, has two hanging edges 10; 10.1 has.
  • these hanging edges 10; 10.1 can a hook-shaped bent front or rear edge 7; 8 of a pressure plate 9 are hung.
  • In the pit 5 there are two strips 12; 12.1 arranged, each in its head part 14; 14.1 a slot 16; 16.1 have, in which the front edge 7 or rear edge 8 can be hung.
  • each foot 17; 17.1 of the strips 12; 12.1 is a round steel 18; 18.1 welded with which they are on the pit base 19 of the support block 4 in a semicircular groove 21; 21.1 are pivoted freely.
  • this semicircular groove 21; 21.1 the bar 12; 12.1 held by two clips 20.
  • the clips 20 are fastened to the pit base 19 with hexagon screws 15. These protrude through the clips 20 and the support block 4 and open into a threaded hole 1.1 in the plate cylinder body 1.
  • bores 22; 22.1 in both side walls 6; 6.1 of the support block 4 are a plurality of horizontal plungers 23 at intervals; 23.1 and several magnets 24; 24.1 arranged alternately.
  • the plunger 23; 23.1 are with the force of the compression springs 26; 26.1 acted upon.
  • the compression springs 26; 26.1 are supported on the inside of the groove 30; 30.1 and move the respective plunger 23; 23.1 horizontally towards the center of the pit. There they lie on the middle parts 25; 25.1 of the clamping strips 12; 12.1 and push it towards the center of the pit.
  • the head part 14; 14.1 of each clamping bar 12; 12.1 has one for clamping a front edge 7 or rear edge 8 of the pressure plate 9 to the side wall 6; 6.1 pointing, low register tab 28; 28.1.
  • the register tab 28; 28.1 represents, in particular when using photopolymer plates which have a plate thickness of approx.
  • a vertical register stop for the front edge 7 of the pressure plate 9, which is designed as a sharp-edged bead 11 with a thickness of approx. 5 mm Defines the circumference register.
  • conventional metal pressure plates can also be clamped and tensioned.
  • the bar without tools such. B. with the thumb at one end 13; 13.1 pushed away from the side wall 6 in the direction of force of the compression springs 26 and against the attraction of the magnets 24.
  • the strip 12 comes into a position in which the pressure force of the springs 26 is greater than the attraction force of the magnets 24 and the strip 12 presses into the "open" position and finally stops there.
  • the folded or unwound front edge 7 of the pressure plate 9 is hooked into the hooking edge 10 in the gap formed between the strip 12 and the side wall 6 after the tensioning strip 12 has been pushed away.
  • the attraction force of the magnets 24 finally prevails and the front edge 7 of the pressure plate 9 is clamped between the register projection 28 and the side wall 6.
  • the strip 12 is held, since the force of the magnets 24 is greater with a small gap (thickness of the pressure plate) than the force of the pressure springs 26.
  • its rear edge 8 is hooked into the slot 16.1 of the head part 14.1 of the second bar 12.1, in this example, which is in a "hanging position" position. Since the holding force of the magnets 24.1 in this position is greater than the counterforce of the compression springs 26.1, the strip 12.1 is held on the side inner wall 6.1.
  • the bar 12.1 with the suspended plate end 8 is then pivoted with the thumb in the direction of force of the compression springs 26.1 and against the direction of the attraction of the magnets 24.1.
  • the ledge 12.1 with the pressure plate trailing edge 8 is finally in a "clamping position" in which the spring force of the compression springs 26.1 predominates considerably, since the gap formed between the magnets 24.1 and the clamping bar 12.1 is too large, and thus the opposite holding force of the magnets 24.1 is negligibly small has become.
  • Fig. 3 shows a second embodiment of the invention.
  • the arrangement of the magnets 24 is identical to the first exemplary embodiment; 24.1 and springs 26; 26.1.
  • a difference lies in the storage and guidance of the strips 12; 12.1 which are made thicker for reasons of stability and in the resulting width of the channel 31, which, however, is less deep than the channel 5 in the first exemplary embodiment.
  • the strips 12; 12.1 are mounted on a plurality of cylindrical rails 29 independently of one another, horizontally displaceable.
  • the rails 29 are perpendicular to the axis-parallel course of the cylinder pit 5 in bores 32; 32.1 arranged.
  • the holes 32; 32.1 are located in the side walls 6; 6.1 of the support block 4, parallel to the compression springs 26; 26.1 and magnets 24; 24.1
  • the cylinder pit 5 shows a third exemplary embodiment in which the pit 5 for receiving the clamping device is incorporated directly into the plate cylinder 1.
  • the cylinder pit 5 is rectangular in cross section and has two hanging edges 10 in the mouth part; 10.1 in which the folded front or rear edge 7; 8 of the pressure plate 9 who hung that can.
  • In the middle of the cylinder pit 5 is a narrow clamping bar 33 z. B. 6 mm thick by means of two cylinder bolts 34 pivotally mounted at their ends in bearing blocks 36.
  • the two cylinder bolts 34 are each in a horizontal bore 37 in both end faces 38 of the clamping bar 33.
  • the bearing blocks 36 are arranged at the ends of the cylinder pit 5.
  • the clamping strip 33 has two triangular recesses 49; 51, into each of which the beveled rear edge 8 of the pressure plate 9 is hung.
  • a bore 53 is provided which serves to receive a lever bolt 54 which can be inserted into the bore 53 through a hole in the pressure plate end.
  • a longitudinal groove 56 is machined into the clamping bar 33, which extends over the entire length of the clamping bar 33 and reduces the spring stiffness of the lower part 57.
  • several bores 58 are provided at intervals, distributed over the length of the clamping bar 33, in which rod magnets 59 are fastened. These protrude with their two poles 61; 62 beyond the width of the clamping bar 59.
  • the bar magnets 33 are in the region of their poles 61; 62 sanded at a slight angle, so that the cross-section results in a trapezoidal shape, the longest side being arranged at the top.
  • the angle of inclination of the poles 61; 62 results from the pivoting angle of the clamping bar 33, so that the bar magnets 59 with their poles 61; 62 flat on a ferromagnetic cylinder wall side wall 6; 6.1 concerns.
  • the bent front edge 7 of the printing plate 9 is inserted into the hanging edge 10; 10.1 attached.
  • the clamping bar 33 is in the direction of rotation of the plate cylinder 1 by means of z. B. pivoted a lever pin 54.
  • one end of the lever pin 54 is inserted into the bore 53 of the clamping bar 33 and pivoted by hand in the direction of rotation until the poles 62 of the bar magnet bear against the pit cylinder wall 6.1. In this position, the magnets 59 then hold the clamping bar 33.
  • the rear edge 8 of the pressure plate 9 can be hooked into the recess 51 of the clamping bar 33 which is opposite to the direction of rotation of the plate cylinder 1.
  • the pressure plate 9 is tensioned by pivoting the tensioning bar 33 against the direction of rotation of the plate cylinder 1 until the opposite poles 61 of the bar magnet 59 now abut the ferromagnetic side wall 6 of the cylinder pit 5, where they are held there by magnetic force.
  • a spring effect of the tensioning bar 33 is applied here by an elastic deformation of the lower part 57 weakened by the longitudinal groove 56.
  • the clamping bar 33 is now in a "clamping position" position.
  • the pressure plate 9 holds, due to the helix angle of the hanging edges 10; 10.1 and recesses 49; 51 independently on the plate cylinder 1 without a clamping device.
  • permanent magnets 24; 24.1 used.
  • electromagnets all parts such as side walls 6; 6.1 or tensioning strips 12; 12.1; 33, the poles of the magnets 24; 24.1; 59 are made of ferromagnetic material or at least coated with it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP87110582A 1986-08-02 1987-07-22 Druckplattenbefestigungs- und Spannvorrichtung Expired - Lifetime EP0255653B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3626243 1986-08-02
DE19863626243 DE3626243A1 (de) 1986-08-02 1986-08-02 Druckplattenbefestigungs- und spannvorrichtung

Publications (3)

Publication Number Publication Date
EP0255653A2 EP0255653A2 (de) 1988-02-10
EP0255653A3 EP0255653A3 (en) 1988-06-29
EP0255653B1 true EP0255653B1 (de) 1990-11-28

Family

ID=6306585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110582A Expired - Lifetime EP0255653B1 (de) 1986-08-02 1987-07-22 Druckplattenbefestigungs- und Spannvorrichtung

Country Status (7)

Country Link
US (2) US4848229A (enrdf_load_stackoverflow)
EP (1) EP0255653B1 (enrdf_load_stackoverflow)
JP (1) JPS6341146A (enrdf_load_stackoverflow)
AU (1) AU602706B2 (enrdf_load_stackoverflow)
DD (1) DD261333A5 (enrdf_load_stackoverflow)
DE (2) DE3626243A1 (enrdf_load_stackoverflow)
SU (2) SU1567118A3 (enrdf_load_stackoverflow)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890555A (en) * 1987-06-03 1990-01-02 Motter Printing Press Co. Printing press plate lockup
US4878429A (en) * 1988-05-26 1989-11-07 Nu-Graphics Engineering, Inc. Magnetic rotary locking mechanism and method
US4974512A (en) * 1988-05-26 1990-12-04 Nu-Graphics Equipment, Inc. Magnetic rotary locking and tensioning mechanism
DE3936446A1 (de) * 1989-11-02 1991-05-08 Miller Johannisberg Druckmasch Plattenzylinder einer druckmaschine
DE3936458C1 (enrdf_load_stackoverflow) * 1989-11-02 1991-04-11 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
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
US5131326A (en) * 1991-08-19 1992-07-21 Rockwell International Corporation Cover mounting for a printing press
DE4210316C2 (de) * 1992-03-30 1994-02-24 Heidelberger Druckmasch Ag Klemm- und Spannvorrichtung für eine Druckplatte in einer Druckmaschine
DE4210778C2 (de) * 1992-04-01 1994-03-31 Roland Man Druckmasch Sicherungsvorrichtung für Spannschienen zum Spannen von Gummitüchern
DE4244077C2 (de) * 1992-12-24 1995-06-08 Koenig & Bauer Ag Vorrichtung zum Aufspannen von biegsamen Druckplatten auf einen Formzylinder einer Rotationsdruckmaschine
DE4306139C2 (de) * 1993-02-27 1996-10-10 Heidelberger Druckmasch Ag Vorrichtung zur Durchführung von Arbeitsschritten in einem Zylinder einer Druckmaschine
FR2709091B1 (fr) * 1993-08-20 1995-11-10 Heidelberg Harris Sa Dispositif à lame interchangeable pour maintenir une plaque d'impression sur un cylindre porte-plaque dans une imprimante rotative, et outil de démontage de la lame.
US5413042A (en) * 1994-02-22 1995-05-09 Heidelberg Druckmaschinen Ag Lock-up assembly for securing a printing plate on a plate cylinder
DE19602746A1 (de) * 1996-01-26 1997-07-31 Kocher & Beck Gmbh & Co Rotati Druckzylinder für ein Klischee aus magnetisierbarem Trägermaterial
DE19924787B4 (de) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Vorrichtung zum Befestigen biegsamer Platten
DE10236867B3 (de) * 2002-08-12 2004-03-25 Koenig & Bauer Ag Vorrichtung zum Halten mindestens eines Aufzugs auf einem Zylinder einer Rotationsdruckmaschine
DE10324330A1 (de) * 2003-05-27 2004-12-30 Man Roland Druckmaschinen Ag Plattenzylinder einer Druckmaschine
FR2898297B1 (fr) * 2006-03-08 2010-03-12 Goss Int Montataire Sa Cylindre de plaque et presse rotative correspondante.
DE102008000061B4 (de) * 2008-01-15 2013-06-06 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Halten einer Druckplatte auf einem Plattenzylinder einer Rotationsdruckmaschine
DE102010001478B4 (de) 2010-02-02 2011-12-08 Koenig & Bauer Aktiengesellschaft Formzylinder einer Druckmaschine
DE102012220398B4 (de) * 2012-11-09 2016-09-15 Koenig & Bauer Ag Verfahren zum Spannen einer Platte auf einer Mantelfläche eines Rotationskörpers einer Druckmaschine
DE102016125012A1 (de) * 2015-12-31 2017-07-06 manroland sheetfed GmbH Druckplattenspannschiene
CN111941998A (zh) * 2020-09-01 2020-11-17 王社 一种用于凸版印刷机的驱动控制装置

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
DE7218664U (de) * 1972-08-17 Koenig & Bauer Ag Vorrichtung zum Aufspannen von biegsamen Druckplatten auf Formzylinder von Druckmaschinen
US2999453A (en) * 1949-05-18 1961-09-12 Ditto Inc Means for line printing
AT186648B (de) * 1953-07-28 1956-08-25 Alfred Herzer Magnetische bzw. elektromagnetische Einrichtung zum Halten von Druckbildträgern am Druckwerk von Druckmaschinen
US2730949A (en) * 1954-07-30 1956-01-17 Addressograph Multigraph Clamp for master sheets of printing machine
DE1936396A1 (de) * 1969-07-17 1971-01-28 Baker Perkins Ltd Druckplatten-Verriegelungsvorrichtung
US3824927A (en) * 1971-01-29 1974-07-23 Ruralist Press Inc Laminated magnetic printing roll assembly
US3730092A (en) * 1971-03-05 1973-05-01 Grace W R & Co Magnetic sheet for impression cylinder
US3745626A (en) * 1971-12-27 1973-07-17 Magna Graphics Corp Coating roll
US4402265A (en) * 1978-11-16 1983-09-06 Beach Manufacturing Corporation Magnetic printing saddle
CH653616A5 (fr) * 1983-07-26 1986-01-15 De La Rue Giori Sa Procede de fixation et d'ajustage d'une plaque d'impression sur un cylindre porte-plaques et dispositif de mise en oeuvre.
DE3338450C1 (de) * 1983-10-22 1985-06-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Einrichtung zum Einfuehren der Endabschnitte eines flexiblen Aufzuges in eine Grube eines Zylinders einer Druckmaschine
DE3470688D1 (en) * 1983-11-14 1988-06-01 De La Rue Giori Sa Plate cylinder with a device for affixing gravure printing plates for a web-printing machine
DE8413364U1 (de) * 1984-05-02 1984-09-27 Barenschee, Wilhelm, 2120 Lüneburg Plattenzylinderanordnung fuer biegsame druckplatten
DE3443353A1 (de) * 1984-11-28 1986-06-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum spannen von druckplatten auf flexo- und offset-plattenzylindern
DE8436119U1 (de) * 1984-12-10 1986-01-02 Windmöller & Hölscher, 4540 Lengerich Formzylinder
US4628915A (en) * 1985-05-15 1986-12-16 Chaney John L Male organ conditioner accessory
US4628815A (en) * 1985-07-15 1986-12-16 Rockwell International Corporation Reversible lockup system for magnetically securable printing plates

Also Published As

Publication number Publication date
EP0255653A3 (en) 1988-06-29
DE3626243A1 (de) 1988-02-04
SU1567118A3 (ru) 1990-05-23
US4893561A (en) 1990-01-16
DE3766440D1 (de) 1991-01-10
DD261333A5 (de) 1988-10-26
AU602706B2 (en) 1990-10-25
SU1671156A3 (ru) 1991-08-15
DE3626243C2 (enrdf_load_stackoverflow) 1992-06-11
AU7577587A (en) 1988-02-04
US4848229A (en) 1989-07-18
JPS6341146A (ja) 1988-02-22
EP0255653A2 (de) 1988-02-10

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