EP0638418A1 - Système de refroidissement pour cylindres de machines d'impression - Google Patents

Système de refroidissement pour cylindres de machines d'impression Download PDF

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Publication number
EP0638418A1
EP0638418A1 EP94107097A EP94107097A EP0638418A1 EP 0638418 A1 EP0638418 A1 EP 0638418A1 EP 94107097 A EP94107097 A EP 94107097A EP 94107097 A EP94107097 A EP 94107097A EP 0638418 A1 EP0638418 A1 EP 0638418A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
recirculation
air
angular range
temperature control
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
EP94107097A
Other languages
German (de)
English (en)
Other versions
EP0638418B1 (fr
Inventor
Hans-Joachim Kurz
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.)
Baldwin Gegenheimer GmbH
Original Assignee
Baldwin Gegenheimer GmbH
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 Baldwin Gegenheimer GmbH filed Critical Baldwin Gegenheimer GmbH
Publication of EP0638418A1 publication Critical patent/EP0638418A1/fr
Application granted granted Critical
Publication of EP0638418B1 publication Critical patent/EP0638418B1/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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/22—Means for cooling or heating forme or impression cylinders

Definitions

  • the invention relates to a temperature control system for printing press cylinders according to the preamble of claim 1.
  • the invention is particularly suitable for offset printing machines.
  • the cylinders of printing machines heat up during operation and can be cooled by air, which is blown onto the outer surface of the cylinders.
  • the air is cooled in a cold air generator to a certain temperature by a heat exchanger.
  • the cooled air is warmer than the press cylinders when the press starts, it causes the press cylinders to heat up more quickly to the desired one Operating temperatur. If, after the operating temperature has been reached, the temperature of the printing press cylinders continues to rise, the air cools these printing press cylinders.
  • Such printing press cylinders to be tempered or cooled are in particular printing plate cylinders, blanket cylinders, impression cylinders and inking unit rollers, which transfer the printing ink from an ink source to the printing plate cylinder.
  • Good printing qualities are achieved when the printing plate cylinder has a temperature between 24 o and 27 o C.
  • Comparable temperature control systems are known from Japanese Patent Application Publications Nos. 56-127457 and 1-72846, from EP 0 480 230 A1, US 1 749 316, GB 1 534 340, DE-OS 19 53 590 and DE-OS 35 41 458 A1 .
  • the object of the invention is to achieve a better temperature control efficiency.
  • the invention is intended to require less cooling energy and at the same time to achieve a faster temperature adjustment of the cylinder to be tempered to the desired setpoint temperature.
  • At least one, preferably a large number of cold air jets are blown onto a lateral surface of a printing unit cylinder to be temperature-controlled at a relatively high pressure.
  • Cold air deflected by the cylinder is fed into a recirculation circuit sucked and blown separately from the cold air jets again onto the outer surface of the cylinder to be cooled.
  • the air of the recirculation circuit is not mixed with the cold air that is blown onto the cylinder, but can only mix with it after touching the cylinder and then be recirculated again.
  • part of the cold air blown onto the cylinder and part of the recirculated air are fed to the air inlet of a cold air generator, which cools the air so that it can then be blown onto the cylinder again as cold air.
  • the air which is returned to the cold air generator can either be withdrawn from the recirculation circuit or it can be the leakage current which escapes between the outer surface of the cylinder to be cooled and the cooling air device, through which the cold air and the recirculated air are blown onto the outer surface of the cylinder becomes.
  • the cold air generator 8 contains a heat exchanger 10 with a refrigerant circuit for cooling air which flows from an air inlet 12 through the heat exchanger 10 and is fed from a blower 14 assigned to the cold air generator 8 via a cold air supply line 16 to a compressed air line 18 of the cooling air device 2.
  • the compressed air line 18 extends over the length of the cylinder 6 and is provided with a multiplicity of blown air openings or nozzles 20 which are located at a small distance from one another and which blow the cold air at high pressure and high flow velocity against the outer surface 4 of the cylinder 6 to be tempered.
  • the cold air blown from the blown air openings or nozzles 20 onto the cylinder 6 is shown schematically by arrows 22.
  • the cooling air device 2 consists essentially of an outer housing 24, an inner housing 26 arranged therein at a mutual spacing, a tube arranged in the inner housing 26 at a mutual spacing and forming the compressed air line 18, and a blower 28 on the side of the compressed air line 18 facing away from the cylinder 6
  • the pressure side 29 of the blower 28 points in the direction of the compressed air line 18 and the cylinder 6
  • "Mutual distances" refer to the cross-sectional view shown in FIG. 1, while the outer housing 24, the inner housing 26 and the compressed air line 18 can be mechanically connected to one another at the front ends.
  • the fan 28 is shown schematically as a fan blade.
  • one or more blowers 28 can be arranged next to one another in the longitudinal direction of the cylinder. For example, in FIG. 2, three fans 28 are arranged next to one another over the length of the cylinder 6.
  • the space between the outer housing 24 and the inner housing 26 forms two mutually parallel suction branches 30, 32 of the blower 28 in question, and the space between the inner housing 26 and the compressed air line 18 forms two mutually parallel pressure branches 34 and 36 of the blower 28 in question
  • the suction branches 30 and 32 and pressure branches 34 and 36 together form an internal air recirculation circuit with two mutually parallel circuit branches, which together have a common blower 28 and of which one circuit branch from the lower suction branch 30 and the lower pressure branch 34 and the other Circuit branch consists of the upper suction branch 32 and the upper pressure branch 36.
  • the longitudinal side 38 of the inner housing 26 facing away from the cylinder 6 is open and forms the inlet of the associated blower 28 for both circuit branches 30, 34 and 32, 36.
  • the cooled air of the compressed air line 18 flows through the blown air openings 20 to a first angular range I of the lateral surface 4 of Cylinder 6.
  • a second angular range II of the cylinder 6 onto which recirculated air is blown from the recirculation outlets 44 and 46 of the pressure branches 34 and 36 of the internal recirculation circuit by means of the blower 28.
  • the two recirculation outlets 44 and 46 are located below and above directly next to the blown air openings 20.
  • an upper recirculation inlet 42 of the upper suction branch 32 for extracting air from an upper third angular region III of the cylinder 6 of the cylinder 6 deflected in the cylinder circumferential direction, then mixed with one another, and then sucked off by the blower 28 through the recirculation inlets 40 and 42 and blown through the blower 28 through the pressure branches 34 and 36 back onto the lateral surface 4 of the cylinder 6.
  • an excess of air results from the freshly flowing cold air 22.
  • This excess air is sucked back via a suction line 50 by the fan 14 of the cold air generator 8 to its air inlet 12, cooled by its heat exchanger 10 and fed again to the compressed air line 18 via the cold air supply line 16.
  • an external cooling circuit for the air is formed by the cold air generator 8, its cold air supply line 16 and its suction line 50.
  • Suction line 50 of the cold air generator 8 can air 52 heated by the cylinder 6 from the space 53 between the outer housing 24 and the inner housing 26 via a suction opening 54 formed in the outer housing 24 and / or warm air 56 heated by the cylinder 6 from a lower gap 58 and an upper gap 60 are sucked off, which is formed between the lateral surface 4 of the cylinder 6 and an opposite lower edge 62 and upper edge 64 of the outer housing 24.
  • These edges 62 and 64 of the outer housing 24 also form the outer, longitudinal to the cylinder 6 boundaries of the recirculation inlets 40 and 42.
  • the temperature of the refrigerant in the heat exchanger 10 can be set and controlled by a microprocessor 70 as a function of non-contact temperature sensors 65, 66 and 68.
  • the temperature sensors 65, 66 and 68 are arranged distributed over the length of the cylinder 6 and measure the temperature of its lateral surface 4 without contact.
  • the positions of the recirculation inlets 40 and 42 can be interchanged with the positions of the recirculation outlets 44 and 46, so that the recirculation inlets 40, 42 lie between the blow air opening 20 and the recirculation outlets 44, 46.
  • the temperature control system can be used to cool several cylinders.
  • a cooling air device 2/2 is provided, which is largely identical to the cooling air device 2 of FIGS. 1 and 2, and corresponding parts are provided with the same reference numbers.
  • the cooling air device 2/2 of FIG. 3 blows cold air 22 through the blowing openings or nozzles 20 onto a first cylinder circumferential angular range I of a middle cylinder 6, which is for example a printing plate cylinder.
  • a lower cylinder 72, for example an impression cylinder, and an upper cylinder 74, for example an inking roller, are in contact with the middle cylinder 6.
  • the two recirculation outlets 44 and 46 are arranged on both sides directly next to the blowing openings or nozzles 20, and the two second angular regions II adjoin the first angular region I on the middle cylinder 6.
  • one 40 is formed over the lower cylinder 72 for extracting cooling air from a third cylinder circumferential angular range II of the lower cylinder 72
  • the other 42 is over the upper cylinder 74 for extracting cooling air from a third cylinder circumferential region III of the upper cylinder 74 is formed.
  • the three angular ranges I, II and III are connected to one another by a lower duct 82 and an upper duct 84, which are each formed by the cylinders 6, 72 and 74 and the cooling air device 2/2 opposite them.
  • the positions of the third angular region III and their recirculation inlets 40 and 42 can be interchanged with the positions of the second angular regions II and their recirculation outlets 44 and 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Press Drives And Press Lines (AREA)
  • Rotary Presses (AREA)
EP94107097A 1993-08-10 1994-05-06 Système de refroidissement pour cylindres de machines d'impression Expired - Lifetime EP0638418B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4326835A DE4326835A1 (de) 1993-08-10 1993-08-10 Temperierungssystem für Druckmaschinenzylinder
DE4326835 1993-08-10

Publications (2)

Publication Number Publication Date
EP0638418A1 true EP0638418A1 (fr) 1995-02-15
EP0638418B1 EP0638418B1 (fr) 1996-12-04

Family

ID=6494861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107097A Expired - Lifetime EP0638418B1 (fr) 1993-08-10 1994-05-06 Système de refroidissement pour cylindres de machines d'impression

Country Status (5)

Country Link
US (1) US5452657A (fr)
EP (1) EP0638418B1 (fr)
JP (1) JP2795808B2 (fr)
AT (1) ATE145861T1 (fr)
DE (2) DE4326835A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001032423A1 (fr) * 1999-10-29 2001-05-10 Daniel Bostrack Systeme de refroidissement pour cylindre d'impression
EP2055477A1 (fr) * 2007-10-31 2009-05-06 technotrans AG Echangeur thermique pour pièces d'une imprimante
CN111284119A (zh) * 2020-04-09 2020-06-16 深圳市绍永福印刷有限公司 一种印刷设备用印刷辊冷却装置

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523076C5 (de) * 1995-06-24 2007-05-16 Heidelberger Druckmasch Ag Vorrichtung zur Erzielung einer einwandfreien Auflage eines Bedruckstoffs in einer Druckmaschine
FR2740726B1 (fr) * 1995-11-08 1998-01-23 Heidelberg Harris Sa Dispositif de refroidissement de la surface du blanchet d'un groupe d'impression d'une machine rotative a imprimer
US5694848A (en) * 1996-03-13 1997-12-09 Heidelberger Druckmaschinen Ag Printing unit for water based inks
US6209456B1 (en) 1996-03-13 2001-04-03 Heidelberger Druckmaschinen Ag Web- and sheet-fed printing unit using various ink types, particularly water-based inks
US5758580A (en) * 1996-03-13 1998-06-02 Heidelberger Druckmaschinen Ag Printing unit using various ink types
IL122953A (en) 1998-01-15 2000-11-21 Scitex Corp Ltd Printing member for use with a printing system and method of imaging the printing member
DE19926749B4 (de) * 1999-06-11 2008-11-20 Heidelberger Druckmaschinen Ag Farbwerk für eine Druckmaschine
DE19942118A1 (de) * 1999-09-03 2001-03-08 Technotrans Ag Verfahren zum Kühlen und Konditionieren von Luft für die Druckmaschinentemperierung sowie diesbezügliche Kühl- und Konditionierungsanordnung
DE19945272B4 (de) * 1999-09-22 2004-03-11 Baldwin Germany Gmbh Druckluftversorgungseinrichtung einer Druckmaschine oder einer Bogen-Handhabungsvorrichtung
IT1314474B1 (it) * 2000-01-28 2002-12-18 Perini Fabio Spa Dispositivo e metodo per la pulizia di una superficie di un cilindroruotante, come un cilindro cliche' di una macchina da stampa od altro
DE10051230B4 (de) * 2000-10-16 2005-09-01 Aradex Ag Verfahren zur Bearbeitung einer bahnförmigen oder bogenförmigen Ware
US6851359B2 (en) * 2001-06-22 2005-02-08 Sparflex Offset printing method and device
DE10152593A1 (de) * 2001-10-24 2003-05-08 Koenig & Bauer Ag Einrichtung zur Bedruckstoff- und Druckwerkskühlung mittels gekühlter Blasluft an Bogenrotationsdruckmaschinen
ATE359913T1 (de) * 2001-11-22 2007-05-15 Koenig & Bauer Ag Verfahren zum betrieb eines druckwerkes
DE10334657A1 (de) 2003-07-30 2005-02-17 Koenig & Bauer Ag Verfahren und Einrichtung zur Bedruckstoff- und Druckmaschinenkühlung
US6868608B2 (en) * 2003-08-18 2005-03-22 Presstek, Inc. Plate handling with thermal tensioning
DK176520B1 (da) * 2003-09-18 2008-07-07 Tresu Anlaeg As Arkoffsetmaskine, törreenhed samt fremgangsmåde til törring i arkoffsetmaskine
DE102006056315B4 (de) * 2006-11-29 2018-05-30 Koenig & Bauer Ag Verfahren zum Betreiben eines Kurzfarbwerkes für Offset-Rotationsdruckmaschinen
DE102009038032A1 (de) 2008-09-03 2010-03-04 Heidelberger Druckmaschinen Ag Verfahren zum Lackieren von Bogen
JP6985761B2 (ja) * 2016-07-26 2021-12-22 株式会社富田技研 版胴冷却装置
JP6780841B2 (ja) * 2016-07-26 2020-11-04 株式会社富田技研 版胴冷却装置
JP7319714B2 (ja) * 2016-07-26 2023-08-02 株式会社富田技研 版胴冷却装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127457A (en) * 1980-03-13 1981-10-06 Nippon Baldwin Kk Cooler for ink roller
EP0553447A1 (fr) * 1992-01-30 1993-08-04 Baldwin-Gegenheimer GmbH Système de refroidissement de plaques d'impression pour une machine à imprimer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319853A (en) * 1939-05-10 1943-05-25 Goss Printing Press Co Ltd Printing method and means
US2651992A (en) * 1949-03-05 1953-09-15 Goebel Ag Web printing press
US4627345A (en) * 1984-02-21 1986-12-09 Lockwood Technical, Inc. Rotary screen printing apparatus
US5074213A (en) * 1987-08-04 1991-12-24 Seiichi Kurosawa Thermoregulator of a block cylinder used for an offset press
DE9017795U1 (fr) * 1990-10-08 1992-03-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127457A (en) * 1980-03-13 1981-10-06 Nippon Baldwin Kk Cooler for ink roller
EP0553447A1 (fr) * 1992-01-30 1993-08-04 Baldwin-Gegenheimer GmbH Système de refroidissement de plaques d'impression pour une machine à imprimer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 4 (M - 106)<882> 12 January 1982 (1982-01-12) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001032423A1 (fr) * 1999-10-29 2001-05-10 Daniel Bostrack Systeme de refroidissement pour cylindre d'impression
EP2055477A1 (fr) * 2007-10-31 2009-05-06 technotrans AG Echangeur thermique pour pièces d'une imprimante
CN111284119A (zh) * 2020-04-09 2020-06-16 深圳市绍永福印刷有限公司 一种印刷设备用印刷辊冷却装置

Also Published As

Publication number Publication date
JPH07148905A (ja) 1995-06-13
ATE145861T1 (de) 1996-12-15
US5452657A (en) 1995-09-26
JP2795808B2 (ja) 1998-09-10
DE59401192D1 (de) 1997-01-16
DE4326835A1 (de) 1995-02-16
EP0638418B1 (fr) 1996-12-04

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