EP0638418B1 - 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
EP0638418B1
EP0638418B1 EP94107097A EP94107097A EP0638418B1 EP 0638418 B1 EP0638418 B1 EP 0638418B1 EP 94107097 A EP94107097 A EP 94107097A EP 94107097 A EP94107097 A EP 94107097A EP 0638418 B1 EP0638418 B1 EP 0638418B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
air
recirculation
compressed
temperature
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
EP94107097A
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German (de)
English (en)
Other versions
EP0638418A1 (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
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Baldwin Gegenheimer GmbH
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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 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.
  • Cold air 22 of the blown air openings or nozzles 20 and recirculated air from the recirculation outlets 44 and 46 are each on the outer surface 4 of the cylinder 6 deflected in the circumferential direction of the cylinder, 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 onto the lateral surface 4 of the cylinder 6 again.
  • 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 III 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)

Claims (12)

  1. Système pour régulariser la température de cylindres de machines d'impression, comprenant un dispositif de soufflage (18, 16, 14, 12, 10, 8) qui comporte au moins une rampe à air comprimé (18) et au moins un orifice de soufflage d'air (20) formé dans cette rampe et servant à souffler de l'air froid (22) sur une première zone angulaire (I) de la périphérie d'un premier cylindre (6), caractérisé en ce qu'il possède au moins un circuit de recyclage (30, 34, 32, 36, 28) séparé de l'air froid (22) amené à la rampe à air comprimé (18), circuit de recyclage qui aspire, à travers une admission de recyclage (40, 42), de l'air froid, soufflé par le dispositif de soufflage (18, 16, 14, 12, 10, 8) sur la première zone angulaire (I) de la surface latérale (4) du premier cylindre (6), l'aspiration s'effectuant à partir d'au moins une troisième zone angulaire (III) de la périphérie du premier cylindre (6) ou d'un cylindre (72, 74) qui lui est voisin et est située, par rapport au sens de rotation du premier cylindre (6), avant et/ou après la première zone angulaire (I), et souffle cet air ensuite à travers une sortie de recyclage (44, 46) sur au moins une deuxième zone angulaire (II) de la périphérie du premier cylindre (6) ou du cylindre (74, 76) qui lui est voisin, zone qui, par rapport au sens de rotation du premier cylindre (6), est située avant et/ou après la première zone angulaire (I) et avant et/ou après la troisième zone angulaire (III), et que le circuit de recyclage (30, 34, 32, 36, 28) contient au moins un ventilateur (28) pour produire le courant d'air de recyclage.
  2. Système de régularisation selon la revendication 1, caractérisé en ce que la deuxième zone angulaire (II) est située entre la première zone angulaire (I) et la troisième zone angulaire (III).
  3. Système de régularisation selon la revendication 1, caractérisé en ce que la troisième zone angulaire (III) est située entre la première zone angulaire (I) et la deuxième zone angulaire (II).
  4. Système de régularisation selon une des revendications précédentes, caractérisé en ce que la rampe à air comprimé (18) et le circuit de recyclage (30, 34, 32, 36, 28) s'étendent chacun sensiblement sur toute la longueur du cylindre (6).
  5. Système de régularisation selon une des revendications précédentes, caractérisé en ce que le circuit de recyclage (30, 34, 32, 36, 28) est disposé autour de la rampe à air comprimé (18), que le ventilateur (28) est disposé du côté de la rampe à air comprimé (18) éloigné du cylindre (6) et que le circuit de recyclage comporte des parties de circuit (30, 34, 32, 36) agencées, par rapport au sens de rotation du cylindre (6), avant et/ou après la rampe à air comprimé (18), chaque fois à côté de cette rampe, parties de circuit qui s'étendent entre un endroit situé près de la surface latérale (4) du cylindre (6, 72, 74) concerné et le ventilateur (28).
  6. Système de régularisation selon une des revendications précédentes, caractérisé en ce que le circuit de recyclage (30, 34, 32, 36, 28) comporte deux branches parallèles (30, 34; 32, 36) dont l'une présente son admission de recyclage (40 ou 42) devant l'orifice ou les orifices de soufflage d'air (20), et l'autre branche de circuit présente son admission de recyclage (42 ou 40) après l'orifice ou les orifices de soufflage d'air (20).
  7. Système de régularisation selon la revendication 6, caractérisé en ce que les admissions de recyclage (40, 42) des deux branches de circuit parallèles (30, 34; 32, 36) sont raccordées, pour ce qui concerne l'écoulement d'air, au côté aspiration (en 38) du même ventilateur (28).
  8. Système de régularisation selon la revendication 6 ou 7, caractérisé en ce que les deux branches de circuit parallèles (30, 34; 32, 36) possèdent chacune une sortie de recyclage (44, 46) dont l'une est située devant l'orifice ou les orifices de soufflage d'air (20), par rapport au sens de rotation du premier cylindre (6), et l'autre est située après cet orifice ou ces orifices de soufflage.
  9. Système de régularisation selon la revendication 8, caractérisé en ce que les sorties de recyclage (44, 46) des deux branches de circuit parallèles (30, 34; 32, 36) sont raccordées, pour ce qui concerne l'écoulement d'air, au côté refoulement du même ventilateur (28).
  10. Système de régularisation selon une des revendications précédentes, caractérisé en ce qu'il possède un second circuit de recyclage qui comporte un générateur d'air froid (8) servant à produire l'air froid (22), au moins un ventilateur (14) pour faire circuler l'air dans le second circuit de recyclage, un conduit d'arrivée d'air comprimé (16) pour amener l'air froid depuis le générateur (8) à la rampe à air comprimé (18) et un conduit d'aspiration (50) pour aspirer de l'air à partir du circuit de recyclage (30, 34, 32, 36) mentionné en premier et pour ramener cet air aspiré jusqu'à une admission (12) du générateur (8) afin que cet air soit de nouveau refroidi puis réintroduit dans la rampe à air comprimé (18).
  11. Système de régularisation selon une des revendications précédentes, caractérisé en ce qu'au moins un circuit de recyclage (30, 34, 32, 36, 28) est formé à l'intérieur d'un dispositif à air de refroidissement (2; 2/2) qui est essentiellement réalisé sous la forme d'une poutre ou d'un caisson s'étendant sensiblement sur toute la longueur du cylindre (6, 72, 74).
  12. Système de régularisation selon la revendication 11, caractérisé en ce que le dispositif à air de refroidissement (2/2) fait passer l'air sur plusieurs cylindres (6, 72, 74).
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
DE4326835 1993-08-10
DE4326835A DE4326835A1 (de) 1993-08-10 1993-08-10 Temperierungssystem für Druckmaschinenzylinder

Publications (2)

Publication Number Publication Date
EP0638418A1 EP0638418A1 (fr) 1995-02-15
EP0638418B1 true 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5881643A (en) * 1995-11-08 1999-03-16 Heidelberger Druckmaschinen Ag Device for cooling the surface of a blanket of a printing unit cylinder
US6571711B1 (en) 1999-10-29 2003-06-03 Air Motion Systems, Inc. Print cylinder cooling system

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19549845B4 (de) * 1995-06-24 2007-07-12 Heidelberger Druckmaschinen Ag Vorrichtung zur Erzielung einer einwandfreien Auflage eines Bedruckstoffes in einer Druckmaschine
US5758580A (en) * 1996-03-13 1998-06-02 Heidelberger Druckmaschinen Ag Printing unit using various ink types
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
US5694848A (en) * 1996-03-13 1997-12-09 Heidelberger Druckmaschinen Ag Printing unit for water based inks
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
ES2276377T3 (es) * 2001-11-22 2007-06-16 KOENIG & BAUER AKTIENGESELLSCHAFT Procedimiento para el funcionamiento de un mecanismo de impresion.
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
DE102007052145A1 (de) * 2007-10-31 2009-05-14 Technotrans Ag Wärmetauscher für Teile einer Druckmaschine
DE102009038032A1 (de) 2008-09-03 2010-03-04 Heidelberger Druckmaschinen Ag Verfahren zum Lackieren von Bogen
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
JP6985761B2 (ja) * 2016-07-26 2021-12-22 株式会社富田技研 版胴冷却装置
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
JP7793179B2 (ja) * 2021-12-15 2026-01-05 アインズ株式会社 オフセット印刷システム及び温調装置

Family Cites Families (7)

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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
JPS56127457A (en) * 1980-03-13 1981-10-06 Nippon Baldwin Kk Cooler for ink roller
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 (de) * 1990-10-08 1992-03-12 MAN Roland Druckmaschinen AG, 6050 Offenbach Thermoregler für eine um einen Druckformzylinder gelegte Druckform für wasserlosen Offset-Druck
DE4202544A1 (de) * 1992-01-30 1993-08-05 Baldwin Gegenheimer Gmbh Druckplatten-temperierungssystem fuer eine druckmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5881643A (en) * 1995-11-08 1999-03-16 Heidelberger Druckmaschinen Ag Device for cooling the surface of a blanket of a printing unit cylinder
US6571711B1 (en) 1999-10-29 2003-06-03 Air Motion Systems, Inc. Print cylinder cooling system

Also Published As

Publication number Publication date
ATE145861T1 (de) 1996-12-15
DE59401192D1 (de) 1997-01-16
EP0638418A1 (fr) 1995-02-15
DE4326835A1 (de) 1995-02-16
JPH07148905A (ja) 1995-06-13
US5452657A (en) 1995-09-26
JP2795808B2 (ja) 1998-09-10

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