EP0508113A1 - Dispositif pour serrer rapidement et précisément et tendre des clichés sur le cylindre porte-plaque d'une machine à imprimer - Google Patents

Dispositif pour serrer rapidement et précisément et tendre des clichés sur le cylindre porte-plaque d'une machine à imprimer Download PDF

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Publication number
EP0508113A1
EP0508113A1 EP92103851A EP92103851A EP0508113A1 EP 0508113 A1 EP0508113 A1 EP 0508113A1 EP 92103851 A EP92103851 A EP 92103851A EP 92103851 A EP92103851 A EP 92103851A EP 0508113 A1 EP0508113 A1 EP 0508113A1
Authority
EP
European Patent Office
Prior art keywords
clamping
tensioning
cylinder
rail
adjusting
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
EP92103851A
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German (de)
English (en)
Other versions
EP0508113B1 (fr
Inventor
Herbert Rebel
Manfred Herold
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 EP0508113A1 publication Critical patent/EP0508113A1/fr
Application granted granted Critical
Publication of EP0508113B1 publication Critical patent/EP0508113B1/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 device for precise clamping and clamping of printing plates on the plate cylinder according to the preamble of the first claim.
  • a device is known from DE-PS 3 516 682 and enables, in a manner known per se, the clamping of the printing plate at the beginning and end of printing by rotating the eccentric shafts associated with the corresponding tensioning rails by means of a hand-operated tool.
  • the subsequent tensioning of the pressure plate is carried out manually using a tool in which the tensioning rail at the end of the print is displaced from the rear channel wall almost in the circumferential direction via a central actuating device and a pressure bar.
  • the disadvantage here is that several manual manipulations on the cylinder channel are necessary, no re-tensioning is possible when the machine is running, and there is no automatic regulation or limitation of the clamping force exerted on the pressure plate.
  • DE 3 843 433 A1 describes a device for Fast clamping of pressure plates, whereby the eccentric shafts that cause clamping and clamping are each provided with double roller levers on the cylinder side wall and can be rotated for clamping, unclamping, clamping, relaxing via a fixed actuator after a corresponding angular positioning of the plate cylinder.
  • EP 0 260 492 A2 also describes a technically similar route, in which the eccentric shafts carry simple lever arms on the cylinder side wall and can be rotated by means of tension or pressure via an actuating device on the frame side.
  • the clamping and clamping device is assigned at least one common actuating device arranged on the machine frame and corresponding to the angular position of the plate cylinder at the time of clamping and clamping. Clamping and tensioning takes place via axially displaceable pull wedge gears, which can be moved by actuating devices arranged on both sides of the cylinder side walls.
  • a disadvantage of the three last-mentioned solutions is that the clamping, but especially the clamping of the pressure plate can only take place in a certain position of the plate cylinder, i.e. re-tensioning while the machine is running and also an automatic regulation and limitation of the clamping force is not guaranteed.
  • the quick release device according to DE 3 843 395 A1 also has the disadvantage that the forces for clamping and unclamping, tensioning and relaxing always act axially and these forces have to be absorbed by the bearings of the plate cylinder.
  • EP 0 396 220 A2 describes a device for rapid clamping of printing plates, in which the clamping and clamping is effected by eccentric shafts, which are led out on a cylinder side wall and each have a simple roller lever.
  • this cylinder side wall is associated with a rotatably mounted disk that can be driven by a motor from the machine frame.
  • a backdrop is incorporated into this disk, which serves to accommodate the rollers of the roller levers.
  • the backdrop is designed such that when the disk is rotated by the flanks of the backdrop, the roller lever is rotated by a certain angle.
  • the disc when clamping a pressure plate, the disc is now rotated so that the roller lever of the pressure start clamping rail is rotated through the link to the clamping position, then the disc is rotated further, so that again the roller lever of the printing end clamping rail into the clamping position through the link is rotated, finally, by rotating the disc and through the backdrop, the roller lever causing the tensioning is turned into the tensioning position.
  • roller lever can only be rotated by a fixed angle due to the backdrop. There is therefore no force limitation when clamping the pressure plate, but especially when tensioning the pressure plate. As with the quick release devices described, re-tensioning while the machine is running is also not possible and automatic regulation and limitation of the clamping force is not guaranteed.
  • DE 3 604 071 A1 and DE 3 604 073 A1 describe devices on plate cylinders in which the tensioning or clamping of the pressure plate is effected by actuators which become effective when pressure medium is applied.
  • Working cylinders and locking mechanisms are integrated into the clamping or clamping devices.
  • a disadvantage of these solutions is that the structure of the tensioning rails differs fundamentally from those which are common in the manually operated quick-action clamping and tensioning devices (eg DE-PS 3 516 682). If a manufacturer wants both a manual and an automated plate clamping and Offer clamping device, this means increased manufacturing and storage costs.
  • plate locking devices are known in which the locking of the clamped printing plate is effected by drive means provided in the pit of the plate cylinder. These setting mechanisms driven in this way are, however, not suitable for precise clamping and clamping of pressure plates.
  • P 39 36 458.5 and P 39 36 459.3 it was proposed to regulate the clamping force exerted on the pressure plate by means of clamping levers pivotably mounted on the rear clamping rail, each of these clamping levers being associated with at least one spring supported by a cylinder.
  • the rear tensioning rail is thus supported on the pressure bar via this tensioning lever.
  • P 39 36 458.5 also describes a motor-driven adjusting spindle, which moves the pressure bar for tensioning via a spindle nut and a bridge.
  • the object of the invention is to extend the input specified device so that a clamping and tensioning of the printing plate can be carried out precisely with a minimum of handling effort, without the plate cylinder first having to be moved exactly into certain angular positions.
  • An automatic regulation and limitation of the clamping force exerted on the printing plate is to be ensured uniformly over the entire width, in particular in the case of large-format printing plates, and the constructional disadvantages mentioned in the prior art are also to be avoided.
  • the plate cylinder 1 is supported on both sides with its pin 2 in frame walls 3 of the printing press (FIG. 1). In its cylinder channel it has 4 means for clamping and tensioning printing plates. According to FIGS. 1, 2a), 2b), 3c), 4a), 4b), these means are, as is known from the prior art, as one of the Beginning of printing DA and front and rear clamping rails 5, 6 assigned to printing end DE, these being designed to be divided.
  • the tensioning rails 5, 6 each consist of an upper and lower clamping device 5.1, 5.2, 6.1, 6.2 which can be actuated by rotating eccentric shafts 5.3, 6.3 (Fig. 3c), 4a), 4b)).
  • the eccentric shafts 5.3, 6.3 are divided like the tensioning rails 5, 6, so that half the format width of the printing plate can be clamped.
  • the front and rear tensioning rails 5, 6 are guided in the cylinder channel 4 by means known per se and not shown, so that they can carry out the corresponding movements when tensioning the pressure plate.
  • the clamping rails 5, 6 are also arranged to be displaceable parallel to the axis of the plate cylinder 1 by means not shown (e.g. screws). (Correction of page register)
  • the front clamping rail 5 is supported directly by clamping screws 5.4 on the front wall of the cylinder channel, spring means (not shown) pressing the front clamping rail 5 against this wall (FIGS. 1, 3c), 4a, 4b)).
  • the plate cylinder 1 has two adjuster rings 8, 9 on each of the two cylinder side walls 7, which are rotatably supported independently of one another on a collar 10 in front of the cylinder journal 2.
  • the eccentric shafts 5.3, 6.3 of the front and rear clamping rails 5, 6 are led out through corresponding openings 11 on both cylinder side walls 7 of the plate cylinder 1 (FIG. 1) and have actuating arms 12 at their ends (FIG. 2a) and 2b)).
  • the openings 11 are dimensioned in such a way that the adjustability of the tensioning rails 5, 6 is ensured.
  • the adjusting rings 8, 9 each have a recess 13 in the form of a gap on their outer circumference (FIG. 2a), 2b)).
  • the eccentric shafts 5.3, 6.3 of the respective half of the plate cylinder 1 are in corresponding length in this case led out of the cylinder side wall 7 so that the actuating arm 12 of the eccentric shaft 5.3 is immersed in the recess 13 of the outer adjusting ring 8 and the actuating arm 12 of the eccentric shaft 6.3 is immersed in the recess 13 of the adjusting ring 9 (FIG. 1).
  • Rotation of the adjusting rings 8, 9 thus causes the actuating arms 12 of the eccentric shafts 5.3, 6.3 to pivot, in which, depending on the direction of rotation of the adjusting rings 8, 9, press the flanks of the recesses 13 onto the actuating arms 12.
  • rotating the adjusting ring 8 in the clockwise direction causes the tensioning rail 5 associated with the start of pressure DA to be clamped.
  • the clamping is released accordingly.
  • turning the adjusting ring 9 counterclockwise causes the clamping rail 6 assigned to the printing end DE to be clamped.
  • the conditions on the left side of plate cylinder 1 according to FIG. 1 have been described. The same applies to the right half of plate cylinder 1.
  • the ends of the actuating arms 12 can be crowned as indicated under Fig. 2a) and 2b).
  • the adjusting rings 8 and 9 on the two cylinder side walls 7 each have a toothing 14, in particular a straight toothing, in an arc region of their inner diameter.
  • This toothing 14 is, as indicated in FIGS. 2a) and 2b), also incorporated in a recess 15 in the adjusting rings 8 and 9, respectively.
  • a spur gear 16 or 17 is in engagement with the toothing 14 of the adjusting ring 8 or 9.
  • the spur gears 16 and 17 are each on a shaft 16.1 and 17.1, which are led out on both cylinder side walls 7 from the plate cylinder 1 with a corresponding length, so that the spur gear 16, the collar 8 and the spur gear 17, the collar 9 can rotate ( Fig. 3a)).
  • the adjusting ring 9, which is respectively assigned directly to the cylinder side wall 7, has a recess 18 in part of its inner circumference, which ensures that the shaft 16.1 does not hinder the turning ability of the adjusting ring 9.
  • the shafts 16.1, 17.1 in the cylinder channel 4 have a further spur gear 16.2, 17.2 (Fig. 3a) and, 3b)).
  • the spur gears 16.2, 17.2 mesh with two further spur gears 16.3, 17.3.
  • These spur gears 16.3, 17.3 are, as indicated in FIGS. 3a) and 3b), rotatably but axially immovably, ie parallel to the axis of the plate cylinder 1.
  • Another spur gear 16.4 is arranged parallel to spur gear 16.3 and another spur gear 17.4 is arranged parallel to spur gear 17.3.
  • Spur gears 16.4 or 17.4 mesh together with a spur gear 19.a or 19.b which is attached to the shaft of a motor 20.a or 20.b (FIGS. 3a) and 3b)).
  • the spur gears 16.3 and 16.4 and the spur gears 17.3 and 17.4 are each assigned a clutch 16.5, 17.5.
  • the clutch mechanism of the clutches 16.5, 17.5 consists in a simple manner in that the spur gears 16.4 and 17.4 are axially displaceable on their axis of rotation and the mutually opposite flanks of the spur gears 16.3, 16.4 and 17.3 and 17.4 are designed to be positive, so that the spur gear is pressed 16.4 or 17.4 on spur gear 16.3 or 17.3 results in a non-rotatable connection.
  • the corresponding pressing or shifting of the spur gears 16.4 or 17.4 is effected in a simple and particularly advantageous manner by a single-acting working cylinder, which is effective when pressure medium is applied.
  • the working cylinders of the clutches 16.5, 17.5 are designed in such a way that the spur gears 16.4 and 17.4 only move when pressure medium is applied.
  • the spur gears 16.4 and 17.4 are released from the spur gears 16.3 and 17.3 by spring elements integrated in the clutches 16.5, 17.5. Since a shifting of the spur gears 16.4 and 17.4 essentially represents the clutch mechanism, the spur gears 19.a, 19.b and the spur gears 16.4 and 17.4 have to be straight-toothed.
  • spur gear 17.4 which is always in engagement with spur gear 19.a
  • another spur gear 21 meshes that forms the end of a shaft 22 (Fig. 3a)).
  • Shaft 22 is guided into a clutch 23, which is also designed, for example, as a clutch to be actuated by pressure medium.
  • clutch 23 On the output side, clutch 23 has a further shaft 24, at the other end of which a pulley 25 is arranged.
  • An adjusting spindle 26 is arranged parallel to the axis of the plate cylinder 1 in the cylinder channel 4, as can be seen in FIG. 3a). This is rotatable, but axially immovable in the cylinder channel 4.
  • the bearings supporting the adjusting spindle 26 are embedded in walls firmly connected to the bottom of the cylinder channel 4.
  • a further pulley 25 is arranged on the adjusting spindle 26.
  • a toothed belt 28 is tensioned around pulley 25 and 27, as shown in FIGS. 3a) and 4a).
  • the adjusting spindle 26 is thus actuated in the exemplary embodiment described so far from motor 20.a via spur gear 19.a, 17.4, 21 and shafts 22, 24, i.e. non-rotatably switched clutch 23 can be driven.
  • a spindle nut 29 which is part of a bridge 30 is seated on the adjusting spindle 26 (FIG. 3a)).
  • Bridge 30 plunges into a recess 31 of the pressure bar 32 with little play.
  • pressure bar 32 serves to move the rear tensioning rail 6 and is arranged between this and the rear channel wall of cylinder channel 4 (FIG. 6). Over its entire length, it has, for example, four recesses 33 with an inclined plane, which slide on partial surfaces of counterparts 34 which are fixed in a cylinder.
  • a movement of the pressure bar 32 parallel to the channel wall thus causes a tensioning of the Pressure plate through a different from the rear channel wall tensioning rail 6 (Fig. 3a), 3b), 5, 6).
  • the motors 20.a, 20.b are advantageously compressed air motors, in particular in the form of lamellas. Compressed air motors of this type generate relatively large torques in a small installation space. Appropriate compressed air supply to the motors 20.a, 20.b makes it easy to avoid overstretching and tearing of the pressure plate during tensioning.
  • the compressed air supply for the motors 20.a, 20.b for driving in both directions of rotation takes place in a manner not shown by means of one or two rotary transmitters designed in a correspondingly multi-channel manner via one or both pins 2 of the plate cylinder 1 and the frame wall 3 which supports them
  • the invention provides for the clutches 16.5, 17.5 and 23 to be designed as clutches which can be switched with compressed air. Accordingly, three further compressed air transmission channels are necessary.
  • each clamping screw 6.4 assigned to each clamping screw 6.4 a clamping lever 37 (FIGS. 5 and 6).
  • a total of 4 tensioning levers 37 which are advantageously arranged in mirror image to the center of the plate cylinder 1 (FIG. 6).
  • the tensioning levers 37 are supported on the pressure bar 32 by means of a molded-on cam 38 with force-intensifying lever transmission.
  • One end of each of the clamping levers 37 is connected to the rear clamping rail 6, that is to say the lower clamping device 6.2, by means of a swivel joint 39.
  • the other free end of the clamping lever 37 is supported on a stop pin 41 under the action of a spring 40 (supporting wall 42) which is supported in a cylinder-fixed manner. This lies on the connecting line of the swivel joints 39 in the rear tensioning rail 6. A gap a therefore arises between the pressure bar 32 and the clamping device 6.2 (FIG. 5).
  • the rear clamping rail 6 is first pressed forward via the cams 38 of the clamping lever 37.
  • uniform clamping forces are exerted on the printing plate over the format width, because if a certain clamping force is exceeded, depending on the preload and the identification of the springs 40, in addition to the lever ratio of the clamping levers 37, the free ends of the clamping levers 37 pivot away from their corresponding stop bolts 41.
  • the clamping force exerted on the printing plate can thus be limited over the entire width of the format.
  • the tensioning device consisting of the tensioning screws 6.4 and the pressure bar 32, which belongs to the prior art, thus represents a series connection consisting of a pretensioning device (pressure bar 32, recess 33, counterpart 34) and the tensioning screws 6.4 for the final, adjusting tensioning.
  • a further advantageous embodiment of the invention provides that the springs, which are supported in a cylinder-fixed manner, can be influenced in their pretension by further adjusting elements, not shown in the figures. This can be achieved in that the cylinder-fixed support (support wall 42) of the spring 40 is arranged on the bottom of the cylinder channel 4 in the direction of extension of the spring 40 relative to the plate cylinder 1.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Screen Printers (AREA)
  • Rotary Presses (AREA)
EP92103851A 1991-04-10 1992-03-06 Dispositif pour serrer rapidement et précisément et tendre des clichés sur le cylindre porte-plaque d'une machine à imprimer Expired - Lifetime EP0508113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4111636 1991-04-10
DE4111636A DE4111636C1 (fr) 1991-04-10 1991-04-10

Publications (2)

Publication Number Publication Date
EP0508113A1 true EP0508113A1 (fr) 1992-10-14
EP0508113B1 EP0508113B1 (fr) 1994-09-21

Family

ID=6429247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103851A Expired - Lifetime EP0508113B1 (fr) 1991-04-10 1992-03-06 Dispositif pour serrer rapidement et précisément et tendre des clichés sur le cylindre porte-plaque d'une machine à imprimer

Country Status (3)

Country Link
EP (1) EP0508113B1 (fr)
AT (1) ATE111813T1 (fr)
DE (2) DE4111636C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0595762A1 (fr) * 1992-10-29 1994-05-04 Sakurai Graphic Systems Corp. Dispositif de serrage des plaques d'impression pour une presse à imprimer
EP0596746B1 (fr) * 1992-11-06 1999-04-14 Riso Kagaku Corporation Dispositif de serrage d'une plaque matrice d'impression pour presses rotatives
CN117054772A (zh) * 2023-07-25 2023-11-14 佛山市顺德区东网五金有限公司 基于线材快速插拔的电气自动化设备检测装置及方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4223328C2 (de) * 1992-07-16 1994-05-19 Roland Man Druckmasch Vorrichtung zum Befestigen von Druckplatten auf dem Plattenzylinder von Druckmaschinen, insbesondere Bogenoffsetdruckmaschinen
DE102019111511A1 (de) * 2019-05-03 2020-11-05 Koenig & Bauer Ag Druckwerk für eine Offsetdruckmaschine mit einem mindestens ein Gummituch tragenden Gummizylinder und Verfahren zum Handhaben eines Gummituches
DE102019111510A1 (de) * 2019-05-03 2020-11-05 Koenig & Bauer Ag Druckwerk für eine Offsetdruckmaschine mit einem mindestens ein Gummituch tragenden Gummizylinder und Verfahren zum Handhaben eines Gummituches

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB694179A (en) * 1949-07-01 1953-07-15 R Hoe & Crabtree Ltd Improvements in clamping mechanism for printing plates

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3604071A1 (de) * 1986-02-08 1987-08-13 Koenig & Bauer Ag Druckplattenspanneinrichtung in einer grube eines plattenzylinders einer rotationsdruckmaschine
DE3604073A1 (de) * 1986-02-08 1987-08-13 Koenig & Bauer Ag Druckplattenklemmeinrichtung in einer grube eines plattenzylinders einer bogenrotationsdruckmaschine
JPH0620609Y2 (ja) * 1986-09-17 1994-06-01 三菱重工業株式会社 枚葉印刷機の自動版締め装置
DE3731642A1 (de) * 1987-09-19 1989-03-30 Koenig & Bauer Ag Plattenschraenkvorrichtung
DD269587B5 (de) * 1987-12-30 1993-10-14 Kba Planeta Ag Einrichtung zum schnellaufspannen von flexiblen druckplatten
DD269585A1 (de) * 1987-12-30 1989-07-05 Polygraph Leipzig Einrichtung zum lagegenauen schnellaufspannen von flexiblen druckplatten
JPH0698746B2 (ja) * 1989-03-30 1994-12-07 アキヤマ印刷機製造株式会社 枚葉印刷機の版締め装置
DE3918215C1 (fr) * 1989-06-03 1990-11-08 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3936458C1 (fr) * 1989-11-02 1991-04-11 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE3936459C1 (fr) * 1989-11-02 1991-04-18 Man Roland Druckmaschinen Ag, 6050 Offenbach, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB694179A (en) * 1949-07-01 1953-07-15 R Hoe & Crabtree Ltd Improvements in clamping mechanism for printing plates

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0595762A1 (fr) * 1992-10-29 1994-05-04 Sakurai Graphic Systems Corp. Dispositif de serrage des plaques d'impression pour une presse à imprimer
EP0596746B1 (fr) * 1992-11-06 1999-04-14 Riso Kagaku Corporation Dispositif de serrage d'une plaque matrice d'impression pour presses rotatives
CN117054772A (zh) * 2023-07-25 2023-11-14 佛山市顺德区东网五金有限公司 基于线材快速插拔的电气自动化设备检测装置及方法
CN117054772B (zh) * 2023-07-25 2024-03-19 深圳市言达电气有限公司 基于线材快速插拔的电气自动化设备检测装置及方法

Also Published As

Publication number Publication date
DE59200519D1 (de) 1994-10-27
ATE111813T1 (de) 1994-10-15
DE4111636C1 (fr) 1992-07-30
EP0508113B1 (fr) 1994-09-21

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