DE3707996C1 - Device for influencing the pressure of the bearing ring - Google Patents

Device for influencing the pressure of the bearing ring

Info

Publication number
DE3707996C1
DE3707996C1 DE19873707996 DE3707996A DE3707996C1 DE 3707996 C1 DE3707996 C1 DE 3707996C1 DE 19873707996 DE19873707996 DE 19873707996 DE 3707996 A DE3707996 A DE 3707996A DE 3707996 C1 DE3707996 C1 DE 3707996C1
Authority
DE
Germany
Prior art keywords
printing unit
side wall
pressure
influencing
adjusting device
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
Application number
DE19873707996
Other languages
German (de)
Inventor
Hermann Dipl-Ing Fischer
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
Priority to DE19873707996 priority Critical patent/DE3707996C1/en
Priority to JP63056462A priority patent/JPH01229627A/en
Application granted granted Critical
Publication of DE3707996C1 publication Critical patent/DE3707996C1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/36—Cams, eccentrics, wedges, or the like
    • 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
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B41F13/21—Bearer rings
    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/38—Cylinder lifting or adjusting devices electrically or magnetically operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

In order to avoid quality fluctuations, such as streaking and ghosting, occurring as a result of temperature changes in the side wall of the printing unit, the temperature of the side wall of the printing unit is recorded by means of a thermocoupler and an adjusting motor is readjusted by means of an electronic circuit, which adjusting motor pivots an eccentric bearing via a worm and cylindrical gear drive. As a result, the engagement pressure between two printing unit cylinders or between two bearing rings, which are arranged on the latter and roll off on one another, can be varied.

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of Claim 1.

Aus der DE-OS 35 20 344 ist bereits eine Vorrichtung der vorgenannten Art bekannt, bei der zwecks Verbesserung der Qualität des Druckes der Zylinder- bzw. Schmitzringanpreßdruck mit Meßwertaufnehmern erfaßt wird, wobei ein Meßwertaufnehmer so angeordnet ist, daß er sich zum Zeitpunkt der Berührung des Spannkanals des einen Zylinders mit dem Spannkanal des anderen Zylinders an einem optimalen Meßort befindet und ein weiterer Meßwertaufnehmer sich zum Zeitpunkt der Berührung des Druckbereiches zu einem vorgegebenen Zeitpunkt an einem vorbestimmten Meßort befindet. Mit derartigen Vorrichtungen werden praktisch Stoßmessungen vorgenommen, deren Werte von Umdrehung zu Umdrehung schwanken und somit eine dauernde Nachregulierung auslösen. Trotz der Verwendung solcher bekannten Vorrichtungen ergeben sich Druckqualitätsminderungen, beispielsweise in Form von Streifenbildungen oder durch das Auftreten von Doublieren, die sich häufig mit zunehmender Betriebsdauer einer Druckmaschine verstärkt bemerkbar machen.From DE-OS 35 20 344 a device is already known type, in order to improve the Quality of the pressure of the cylinder or bearer pressure is measured with transducers, a transducer so is arranged that he is at the time of touching the Clamping channel of one cylinder with the clamping channel of the other Cylinder is located at an optimal measuring location and another Sensor at the time of touching the Printing area at a predetermined time on a predetermined measurement location. With such devices are practically impact measurements, the values of Rotate from rotation to rotation and thus a permanent Trigger readjustment. Despite the use of such known Devices result in print quality reductions, for example in the form of banding or through that Occurrence of doubling, which often changes with increasing Increase the operating time of a printing press.

Aufgabe der vorliegenden Erfindung ist es, die Druckqualität einer Rotations-Druckmaschine, insbesondere eines Schmitzringläufers zu verbessern und/oder die Bildung von Druckstreifen und Doublieren auch nach längerer Betriebsdauer einer Maschine zu vermeiden.The object of the present invention is the print quality a rotary printing press, in particular one Improve bearer ring and / or the formation of Print strips and doubling even after a long period of operation to avoid a machine.

Diese Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils in Anspruch 1 gelöst.This task is accomplished by applying the characteristics of the characteristic part solved in claim 1.

Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. Die Zeichnung zeigt schematisch die erfindungsgemäße Vorrichtung.
Further developments of the invention result from the subclaims. The drawing shows schematically the device according to the invention.

Die schematisch angedeuteten Druckwerkzylinder 1, 2 können beispielsweise als Gegendruckzylinder 1 und als Gummituchzylinder 2 ausgebildet sein und an ihren Enden Schmitzringe aufweisen, die hier nicht im einzelnen dargestellt sind. In üblicher Weise können die beiden Zylinder 1, 2 exzentrisch gelagert sein, wobei die Anstellung der Zylinder durch ein Exzenterlager 3 erfolgen kann, wie es am Zylinder 2 angedeutet ist. Das Exzenterlager 3 ist mit einer Exzenterstellstange 4 verbunden, die über ein mit einem Zahnrad 7 fest verbundenes Gewindeteil 5 in vorteilhafter Weise hin- und herbewegt werden kann. Der Antrieb des Zahnrades 7 erfolgt über ein Stirnrad 8, das über eine Schnecke 9 und ein Schneckenrad 10 verdreht wird. Die Lagerung des Gewindeteils 5 erfolgt in einem an der Seitenwand befestigten Lager 6.The schematically indicated printing unit cylinders 1, 2 can be designed, for example, as an impression cylinder 1 and as a blanket cylinder 2 and have bearer rings at their ends, which are not shown in detail here. In a conventional manner, the two cylinders 1, 2 can be mounted eccentrically, it being possible for the cylinders to be adjusted by an eccentric bearing 3 , as is indicated on the cylinder 2 . The eccentric bearing 3 is connected to an eccentric adjusting rod 4 , which can be moved back and forth in an advantageous manner via a threaded part 5 firmly connected to a gear wheel 7 . The gear 7 is driven by a spur gear 8 which is rotated by a worm 9 and a worm wheel 10 . The threaded part 5 is stored in a bearing 6 fastened to the side wall.

Die Schnecke 9 wird wiederum durch einen Stellmotor 11 in Abhängigkeit von den Meßwerten eines Thermoelements 12 gedreht, das in oder an einer Druckwerkseitenwand 32 angeordnet ist und die Temperatur derselben mißt. Die erfindungsgemäße Idee basiert auf der Überlegung, daß infolge der Erwärmung der Druckwerkseitenwände deren Ausdehnung verändert wird, wodurch mit zunehmender Betriebsdauer sich der Achsmittelabstand zweier benachbarter Zylinder, hier der Zylinder 1, 2, verändert und zwar mit zunehmender Erwärmung größer wird, so daß der Anstelldruck bzw. der Schmitzringdruck sich verringert. Dies führt wiederum zu einem unruhigen Lauf, insbesondere beim Überrollen der Zylindergruben, was zu Schwingungen, also Streifenbildung und zum Doublieren führen kann.The screw 9 is in turn rotated by an actuator 11 as a function of the measured values of a thermocouple 12 which is arranged in or on a printing unit side wall 32 and measures the temperature thereof. The idea according to the invention is based on the consideration that due to the heating of the printing unit side walls, their expansion is changed, whereby the axis center distance of two adjacent cylinders, here the cylinder 1, 2 , changes with increasing operating time, and increases with increasing heating, so that the starting pressure or the bearer ring pressure is reduced. This in turn leads to a restless run, especially when rolling over the cylinder pits, which can lead to vibrations, i.e. streaking and doubling.

Wird gemäß der Erfindung eine unerwünschte Temperaturveränderung in der Seitenwand 32 festgestellt, so wird durch entsprechende Spannungsveränderung im Thermoelement 12 ein elektrisches Signal über die Leitungen 13, 14 und über einen Verstärker 15 auf eine Leitung 16 gegeben, die mit einem Eingang eines Dreipunktreglers 17 verbunden ist. Der Dreipunktregler 17 erhält auch eine Referenzspannung entsprechend der individuellen Maschinencharakteristika von einem Referenzpotentiometer 19 über eine Leitung 18 und ist außerdem mit einem Potentiometer 30 über eine Leitung 31 verbunden, das eine Referenzspannung von dem Stellmotor 11 erhält.If, according to the invention, an undesirable temperature change is found in the side wall 32 , an appropriate signal change in the thermocouple 12 gives an electrical signal via the lines 13, 14 and via an amplifier 15 to a line 16 which is connected to an input of a three-point controller 17 . The three-point controller 17 also receives a reference voltage corresponding to the individual machine characteristics from a reference potentiometer 19 via a line 18 and is also connected to a potentiometer 30 via a line 31 , which receives a reference voltage from the servomotor 11 .

Durch den Dreipunktregler 17 wird bei Temperaturänderung eine entsprechende Nachregelspannung zur Erhöhung oder zur Verminderung der Zylinder- bzw. Schmitzringanstelldrucke an einem seiner Ausgänge 20 oder 21 erzeugt, die über die Dioden 22, 23 eines der Relais 24, 25 betätigten, wodurch wiederum einer der Schalter 26, 27 geschlossen wird. Dadurch wird der Stellmotor 11 entweder über die Leitung 28 oder 29 in Links- oder Rechtsdrehrichtung verstellt, wodurch über den Antrieb 9, 10, 8, 7 und 5 die Exzenterstange 4 verschoben und somit das Exzenterlager 3 verschwenkt wird. Dadurch ergibt sich eine Regelung bzw. Nachstellung des Anpreßdruckes, insbesondere des Schmitzringanpreßdruckes zwischen den Zylindern 1, 2.When the temperature changes, the three-point regulator 17 generates a corresponding readjustment voltage to increase or decrease the cylinder or bearer ring pressure at one of its outputs 20 or 21 , which actuates one of the relays 24, 25 via the diodes 22, 23 , which in turn causes one of the switches 26, 27 is closed. As a result, the servomotor 11 is adjusted either in the left or right direction of rotation via the line 28 or 29 , as a result of which the eccentric rod 4 is displaced via the drive 9, 10, 8, 7 and 5 and the eccentric bearing 3 is thus pivoted. This results in a regulation or adjustment of the contact pressure, in particular the bearer contact pressure between the cylinders 1, 2 .

Temperaturänderungen in den Druckwerkseitenwänden, die bisher Ursache für eine Verminderung der Druckqualität waren, können mit der erfindungsgemäßen Vorrichtung somit in ihrer Auswirkung eliminiert werden.Temperature changes in the printing unit side walls, the previously The reason for a decrease in print quality could be with the device of the invention thus in its effect be eliminated.

Claims (2)

1. Vorrichtung zur Beeinflussung des Schmitzringdruckes für eine Rotations-Druckmaschine mit zwischen Seitenwänden gelagerten, durch eine Anstellvorrichtung gegeneinander anstellbaren Zylindern, wobei durch die Anstellvorrichtung der Schmitzringdruck konstant gehalten wird, dadurch gekennzeichnet, daß in oder an einer Druckwerkseitenwand (32) ein thermoempfindliches Element (12) angeordnet ist, welches mit einer Schaltungsanordnung (17, 22, 23, 24, 25) verbunden ist, die mit der Anstellvorrichtung (9, 10, 7, 5, 4, 3) eines Druckwerkzylinders (2) in Verbindung steht. 1. Device for influencing the bearer ring pressure for a rotary printing press with cylinders mounted between side walls, which can be adjusted against one another by an adjusting device, the bearer ring pressure being kept constant by the adjusting device, characterized in that in or on a printing unit side wall ( 32 ) a thermo-sensitive element ( 12 ) is arranged, which is connected to a circuit arrangement ( 17, 22, 23, 24, 25 ) which is connected to the adjusting device ( 9, 10, 7, 5, 4, 3 ) of a printing group cylinder ( 2 ). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schaltungsanordnung (17, 22, 23, 24, 25) einen Dreipunktregler (17) umfaßt, dem zwei Kalibrierpotentiometer (19, 30) zugeordnet sind, von denen das eine (30) eine Referenzspannung von einem einen Schneckentrieb (9, 10) betätigenden Stellmotor (11) erhält, der auf eine Exzenterverstelleinrichtung (4, 5, 7) wirkt und von dem Dreipunktregler (17) über elektronische Schalter (24, 25) in zwei Drehrichtungen ansteuerbar ist.2. Device according to claim 1, characterized in that the circuit arrangement ( 17, 22, 23, 24, 25 ) comprises a three-point controller ( 17 ), the two calibration potentiometers ( 19, 30 ) are assigned, one of which ( 30 ) one Receives reference voltage from a servo motor ( 11 ) actuating a worm drive ( 9, 10 ), which acts on an eccentric adjustment device ( 4, 5, 7 ) and can be controlled by the three-position controller ( 17 ) via electronic switches ( 24, 25 ) in two directions of rotation.
DE19873707996 1987-03-12 1987-03-12 Device for influencing the pressure of the bearing ring Expired DE3707996C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19873707996 DE3707996C1 (en) 1987-03-12 1987-03-12 Device for influencing the pressure of the bearing ring
JP63056462A JPH01229627A (en) 1987-03-12 1988-03-11 Device for having effect on quality of printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873707996 DE3707996C1 (en) 1987-03-12 1987-03-12 Device for influencing the pressure of the bearing ring

Publications (1)

Publication Number Publication Date
DE3707996C1 true DE3707996C1 (en) 1988-10-20

Family

ID=6322889

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873707996 Expired DE3707996C1 (en) 1987-03-12 1987-03-12 Device for influencing the pressure of the bearing ring

Country Status (2)

Country Link
JP (1) JPH01229627A (en)
DE (1) DE3707996C1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123957A1 (en) * 1991-07-19 1993-01-21 Roland Man Druckmasch Rotary printing machine pressure control - has cooling system to cool side frames to control pressure between cylinders
EP0564936A1 (en) * 1992-04-04 1993-10-13 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Anilox-offset printing unit with short inking system
DE4232163A1 (en) * 1992-09-25 1994-03-31 Koenig & Bauer Ag Method and device for adjusting the pressure of a roller provided with a plastic jacket in rotary printing machines
EP0591792A1 (en) * 1992-10-01 1994-04-13 Komori Corporation Cylinder throw apparatus
DE4420355A1 (en) * 1994-06-10 1995-12-14 Wifag Maschf Device for reducing cylinder deflection in rotary printing machines
DE19753820A1 (en) * 1997-12-04 1999-06-10 Roland Man Druckmasch Device for the mutual adjustment of printing unit cylinders
WO2000041887A1 (en) * 1999-01-18 2000-07-20 Koenig & Bauer Aktiengesellschaft Cylinder drive
DE19927555A1 (en) * 1999-06-16 2000-12-21 Koenig & Bauer Ag Cylinder drive for rotary printing press, with second friction gear to compensate for that of first friction gear
DE102007036133A1 (en) * 2007-08-01 2009-02-12 Koenig & Bauer Aktiengesellschaft Bearer ring friction optimization method for offset rotary printing machine, involves adjusting position of assigned cylinder during radial change of blanket cylinder such that bearer ring does not exceed/falls below tolerance range
DE102021112079A1 (en) 2021-05-10 2022-11-10 Koenig & Bauer Ag Sheet-fed printing press with at least one printing unit and a method for setting the print on and/or print-off of rotary driven cylinders having cylinder channels of a printing unit of a sheet-fed printing press

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520944A1 (en) * 1985-06-12 1986-12-18 Wolff Walsrode Ag, 3030 Walsrode SEALABLE MULTILAYER FILMS WITH LOW GAS PERMEABILITY AND THEIR USE AS PACKAGING MATERIAL

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520944A1 (en) * 1985-06-12 1986-12-18 Wolff Walsrode Ag, 3030 Walsrode SEALABLE MULTILAYER FILMS WITH LOW GAS PERMEABILITY AND THEIR USE AS PACKAGING MATERIAL

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123957A1 (en) * 1991-07-19 1993-01-21 Roland Man Druckmasch Rotary printing machine pressure control - has cooling system to cool side frames to control pressure between cylinders
DE4211379C2 (en) * 1992-04-04 1999-01-07 Roland Man Druckmasch Anilox offset printing unit with a short inking unit
EP0564936A1 (en) * 1992-04-04 1993-10-13 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Anilox-offset printing unit with short inking system
DE4211379A1 (en) * 1992-04-04 1993-10-14 Roland Man Druckmasch Anilox offset printing unit with a short inking unit
US5355796A (en) * 1992-04-04 1994-10-18 Man Roland Druckmaschinen Ag Anilox offset printing unit with a short inking device
DE4232163A1 (en) * 1992-09-25 1994-03-31 Koenig & Bauer Ag Method and device for adjusting the pressure of a roller provided with a plastic jacket in rotary printing machines
DE4232163C3 (en) * 1992-09-25 2001-09-06 Koenig & Bauer Ag Device for maintaining an adjusted pressure of an inking roller on a form cylinder of a rotary printing press
EP0591792A1 (en) * 1992-10-01 1994-04-13 Komori Corporation Cylinder throw apparatus
US5445076A (en) * 1992-10-01 1995-08-29 Komori Corporation Cylinder throw apparatus
DE4420355A1 (en) * 1994-06-10 1995-12-14 Wifag Maschf Device for reducing cylinder deflection in rotary printing machines
DE4420355C2 (en) * 1994-06-10 1999-09-23 Wifag Maschf Method and device for influencing the bending profile of a cylinder of a rotary printing press
DE19753820A1 (en) * 1997-12-04 1999-06-10 Roland Man Druckmasch Device for the mutual adjustment of printing unit cylinders
WO2000041887A1 (en) * 1999-01-18 2000-07-20 Koenig & Bauer Aktiengesellschaft Cylinder drive
EP1440800A2 (en) 1999-01-18 2004-07-28 Koenig & Bauer Aktiengesellschaft Rotary printing machine cylinder drive
EP1447218A2 (en) 1999-01-18 2004-08-18 Koenig & Bauer Aktiengesellschaft Driving means for cylinders of a rotary printing machine
DE19927555A1 (en) * 1999-06-16 2000-12-21 Koenig & Bauer Ag Cylinder drive for rotary printing press, with second friction gear to compensate for that of first friction gear
DE102007036133A1 (en) * 2007-08-01 2009-02-12 Koenig & Bauer Aktiengesellschaft Bearer ring friction optimization method for offset rotary printing machine, involves adjusting position of assigned cylinder during radial change of blanket cylinder such that bearer ring does not exceed/falls below tolerance range
DE102007036133B4 (en) 2007-08-01 2021-07-22 Koenig & Bauer Ag Method and device for optimizing bearer ring friction
DE102021112079A1 (en) 2021-05-10 2022-11-10 Koenig & Bauer Ag Sheet-fed printing press with at least one printing unit and a method for setting the print on and/or print-off of rotary driven cylinders having cylinder channels of a printing unit of a sheet-fed printing press

Also Published As

Publication number Publication date
JPH01229627A (en) 1989-09-13

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