EP0951994A1 - Dispositif de fixation de plaques sur des cylindres de machines à impression - Google Patents

Dispositif de fixation de plaques sur des cylindres de machines à impression Download PDF

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Publication number
EP0951994A1
EP0951994A1 EP99106998A EP99106998A EP0951994A1 EP 0951994 A1 EP0951994 A1 EP 0951994A1 EP 99106998 A EP99106998 A EP 99106998A EP 99106998 A EP99106998 A EP 99106998A EP 0951994 A1 EP0951994 A1 EP 0951994A1
Authority
EP
European Patent Office
Prior art keywords
lever
fastening device
actuating device
plate
clamping rail
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
EP99106998A
Other languages
German (de)
English (en)
Other versions
EP0951994B1 (fr
Inventor
Helmut Schild
Michael Rother
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 EP0951994A1 publication Critical patent/EP0951994A1/fr
Application granted granted Critical
Publication of EP0951994B1 publication Critical patent/EP0951994B1/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
    • B41F27/1231—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

Definitions

  • the invention relates to a fastening device for Plates on printing press cylinders according to the preamble of Claim 1.
  • a disadvantage of such a device is that the Holding force for the spring elements applying the pressure plates arranged integrated in the rails of the clamping device must be so that the manufacture of the corresponding parts a high manufacturing cost.
  • the spring elements there is an automatic adjustment to different ones Plate thicknesses, however, the detection gap for the pressure plate because of the overpressure of the springs when opening the clamping device only opened up to a maximum amount become.
  • a small detection gap makes insertion difficult of the pressure plate end in such a clamping device. At An automated plate feeder is therefore a malfunction cannot be excluded in the course of the procedure.
  • a clamping device for printing plates in which an upper and a lower terminal block over a rotatable cam or eccentric shaft in an open and in a closed position holding the pressure plate can be brought is.
  • the cam or eccentric shaft is on the led out and faces both ends of the cylinder Lever elements, each with an example as Pneumatic cylinder trained actuator interact.
  • the clamping device is opened by loading the other actuator closing the Clamping device and thus the clamping of the pressure plate.
  • the object of the present invention is therefore a fastening device according to the preamble of claim 1 to expand in such a way that avoiding the above Disadvantages mentioned a structurally simple execution is obtained for a fastening device the plates can be attached with sufficient holding force are and also protection against destruction in the event detected objects is too thick.
  • the preferably a fixed upper and a radially movable lower terminal block existing fastening device over a cylinder-supported and below the lower one Terminal block arranged eccentric shaft is actuated.
  • the eccentric shaft is pivoted using two assigned ones Actuators such that the first Actuator the clamping rail from the closed Position in the open and from the open position (Inserting a printing plate) into one of the maximum plate thickness corresponding locking position is transferable and the complete closing and thus clamping of the plate a second actuator from this pre-closed position from, which is then used to hold the pressure plate necessary holding force is applied.
  • first actuator is one compared to the full closing reduced force so that even if an object with too large is present Strength within the open detection area of the Clamping rail no damage to the corresponding parts caused. This takes place in the pre-closing position measuring the plate thickness - the final closing only occurs when a plate with the maximum is determined allowable or less strength.
  • Activation of the first and second actuators is such that the second, the final Holding force for the actuator applying the pressure plate is only activated if after activation the first actuator the lower terminal block from the open position completely the intended and the maximum workable plate thickness corresponding pre-closing position has reached. If by mistake a wrong one Object (e.g. tool) or a pressure plate with too large thickness (e.g. folded edge / corner) in the open Detection area between the upper and lower terminal strips has been introduced, the lower terminal block reaches after activating the first actuator the lower closing force not that of the maximum processable Pre-position corresponding to plate thickness.
  • Object e.g. tool
  • too large thickness e.g. folded edge / corner
  • the achievement the pre-closing position corresponding to the maximum plate thickness by one with the first actuator interacting sensor is determined.
  • the first Actuating device as explained in more detail below as a double-acting pneumatic cylinder designed to Approaching the pre-closing position with a reduced pressure is operated, it can be reached the pre-closing position monitor by using a sensor (Proximity switch) one on the piston rod or on one Mark made by the lever driven by the piston rod is keyed. If the plate is not too thick in the open detection gap, the activation of the first actuator representing pneumatic cylinder reached the pre-closing position and a corresponding one Sensor signal generated (extended position of the piston rod the first actuator).
  • the second is applied Actuating device (double-acting pneumatic cylinder), so that the lower terminal block from the pre-closing position the force intended to hold a pressure plate in the Closed position is pressed.
  • the lower terminal block moving eccentrics are in the intended end position panned.
  • the fastening device according to the invention can on a Plate or form cylinder both for attaching a plate be provided at the beginning and end of the print. Especially for holding a printing plate at the end of the print are special high clamping forces required, which by appropriate Interpretation of the second actuator in simple Are feasible. Introducing the print end into the Fastening device is opened by wide opening of the clamping gap (Detection range) facilitated, so that the invention Fastening device preferred for half or fully automatic plate changing systems can be used can.
  • FIG. 1 shows a plate or forme cylinder Cylinder 1 of a printing machine, not shown.
  • the cylinder 1 has an axially parallel pit 2, in which is a clamping rail 3 assigned to the start of printing as Fastening device for printing plates is arranged.
  • the clamping rail 3 as a fastening device has an upper part 4 which is fixed to the cylinder in the form of a correspondingly profiled rail and a radially movable lower part 5 which is likewise designed as a rail.
  • a shaft 6 which is rotatably received in spaced-apart, cylinder-fixed bearing blocks 8 and which has eccentric 7 between the bearing blocks 8.
  • the outer contours of the eccentric 7 cooperate with the lower surfaces of the lower part 5 in the manner shown, so that the lower part 5 can be actuated to open or close the clamping gap by pivoting the shaft 6.
  • the direction of movement of the lower part 5 and the eccentric 7 are indicated by the double arrows.
  • the lower part 5 is pressed by spring elements, not shown, into the open position (cf. FIG. 3) and thus against the outer contour of the eccentric 7.
  • the lower part 5 also pivots through these spring elements, the shaft 6 via the eccentric 7 in the Open “position.
  • the lever 10 assigned to the first actuating device 11 at one end of the shaft 6 is thus rotated into the position shown in FIG.
  • Figures 3 to 5 show the first actuator 11, which with the lever 10 on one end of the Cylinder 1 cooperates according to Figure 1.
  • the first actuator 11 consists of one at the not shown end pivotally articulated, pneumatically operated Working cylinder 12 with a piston rod 13, the free end articulated with one arm of a two-armed Lever 14 is connected.
  • This lever 14 is a frame-fixed joint 15 rotatably mounted.
  • the lever 14 has a rotatably mounted roller 16 on a second arm, which cooperates with a contour 17 of the lever 10 of the shaft 6.
  • Figure 3 shows the fully open position the clamping rail 3 with the in the lowest position located lower part 5 for inserting a pressure plate 18th in the fully open detection gap.
  • FIGS 6 and 7 show that on the opposite side of the cylinder 1 arranged lever 9, which with the second Actuator 19.
  • the second actuator 19 consists of a pneumatically operated, fixed arranged working cylinder 20 with a piston rod 21 the end of which a roller 22 is arranged.
  • the roller 22 acts doing so with the free end of the lever 9 at the corresponding end the shaft 6 together.
  • a sensor 23 is provided, which with a mark made on the shaft of the piston rod 13 24 interacts and from which a signal can be exactly extracted, when the piston rod 13 is fully extended.
  • the mark 24 can be a permanent magnet with which a magnetic field detecting sensor 23 cooperates.
  • a comparison of the positions of the lever 10 of Figures 3 and 4 shows that when in the detection gap between the top 4 and lower part 5 there is an object that is too thick, the lever 10 is not in the position shown in FIG. 4 can pivot and consequently the piston rod 13 because of reduced pressure in the working cylinder 12 does not fully extend. As a result, the marking 24 then lies on the sensor 23 not opposite and there is no signal from this.
  • the sensor 23 stands with one of the processes shown triggering control in operative connection, the control the pressurization of the working cylinders 12, 20 over Electromagnetically switchable valves.
  • the lever 14 takes through complete retraction of the piston rod 13 with the first Actuating device the position shown in dashed lines in FIG. 5 on.
  • the roller 16 can not at the end of the lever 14 the end of the lever 10 in the closed position collide.
  • To open the clamping rail 3 (the lower part 5) moves the piston rod 13 of the first actuator 11 completely from (see Fig. 5 - Fig. 4), so that the role 16 comes into contact with the contour 17 at the end of the lever 14 and thus the lever 10 together with shaft 6 in the pre-closing position pivoted according to Figure 4.
  • the piston rod 13 completely retracted so that the lower part 5 through the Spring force fully opened and thereby the lever 10 in the 3 is pivoted.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP99106998A 1998-04-23 1999-04-09 Dispositif de fixation de plaques sur des cylindres de machines à impression Expired - Lifetime EP0951994B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29807377U DE29807377U1 (de) 1998-04-23 1998-04-23 Befestigungsvorrichtung für Platten auf Druckmaschinenzylindern
DE29807377U 1998-04-26

Publications (2)

Publication Number Publication Date
EP0951994A1 true EP0951994A1 (fr) 1999-10-27
EP0951994B1 EP0951994B1 (fr) 2001-12-19

Family

ID=8056205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106998A Expired - Lifetime EP0951994B1 (fr) 1998-04-23 1999-04-09 Dispositif de fixation de plaques sur des cylindres de machines à impression

Country Status (4)

Country Link
EP (1) EP0951994B1 (fr)
JP (1) JP3244667B2 (fr)
AT (1) ATE211066T1 (fr)
DE (2) DE29807377U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146345A1 (de) * 2001-09-20 2003-04-24 Roland Man Druckmasch Formzylinder für eine Druckmaschine
EP1790472A3 (fr) * 2005-11-02 2008-05-07 Goss Systemes Graphiques Nantes Presse d'impression à actionneurs de verrouillage de plaques portés par le bâti
CN110682679A (zh) * 2019-09-27 2020-01-14 烟台市晟宝丽壁纸有限公司 一种壁纸印刷版气动装卸装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7290949B1 (en) * 2005-10-12 2007-11-06 Tallygenicom Lp Line printer having a motorized platen that automatically adjusts to accommodate print forms of varying thickness
DE102019101172A1 (de) * 2019-01-17 2020-07-23 Koenig & Bauer Ag Formzylinder mit Haltevorrichtung und ein Flexo-Auftragwerk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260492A2 (fr) * 1986-09-17 1988-03-23 Mitsubishi Jukogyo Kabushiki Kaisha Dispositif automatique de tension de plaque d'impression pour machine d'impression alimentée en feuilles
DE4335140C1 (de) * 1993-10-15 1995-02-02 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE29600845U1 (de) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260492A2 (fr) * 1986-09-17 1988-03-23 Mitsubishi Jukogyo Kabushiki Kaisha Dispositif automatique de tension de plaque d'impression pour machine d'impression alimentée en feuilles
DE4335140C1 (de) * 1993-10-15 1995-02-02 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE29600845U1 (de) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146345A1 (de) * 2001-09-20 2003-04-24 Roland Man Druckmasch Formzylinder für eine Druckmaschine
DE10146345B4 (de) * 2001-09-20 2006-07-06 Man Roland Druckmaschinen Ag Klemm- und Spannvorrichtung für eine Druckmaschine
EP1790472A3 (fr) * 2005-11-02 2008-05-07 Goss Systemes Graphiques Nantes Presse d'impression à actionneurs de verrouillage de plaques portés par le bâti
CN110682679A (zh) * 2019-09-27 2020-01-14 烟台市晟宝丽壁纸有限公司 一种壁纸印刷版气动装卸装置

Also Published As

Publication number Publication date
EP0951994B1 (fr) 2001-12-19
JPH11320836A (ja) 1999-11-24
ATE211066T1 (de) 2002-01-15
DE29807377U1 (de) 1998-07-16
DE59900569D1 (de) 2002-01-31
JP3244667B2 (ja) 2002-01-07

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