EP0739718B1 - Dispositif pour empêcher la condensation dans les machines de traitement de matériaux en forme de bande - Google Patents

Dispositif pour empêcher la condensation dans les machines de traitement de matériaux en forme de bande Download PDF

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Publication number
EP0739718B1
EP0739718B1 EP96104652A EP96104652A EP0739718B1 EP 0739718 B1 EP0739718 B1 EP 0739718B1 EP 96104652 A EP96104652 A EP 96104652A EP 96104652 A EP96104652 A EP 96104652A EP 0739718 B1 EP0739718 B1 EP 0739718B1
Authority
EP
European Patent Office
Prior art keywords
heating medium
crossbar
nip
nip guard
surface 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
EP96104652A
Other languages
German (de)
English (en)
Other versions
EP0739718A2 (fr
EP0739718A3 (fr
Inventor
Drew E. Kiefaber
Jeffrey R. Rummler
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0739718A2 publication Critical patent/EP0739718A2/fr
Publication of EP0739718A3 publication Critical patent/EP0739718A3/fr
Application granted granted Critical
Publication of EP0739718B1 publication Critical patent/EP0739718B1/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

Definitions

  • the present invention relates to a device for preventing condensation in machines for processing web-like material.
  • the Invention a device for preventing condensation on a Protection device in a printing press.
  • DE-PS-137 401 describes an internally heated cylinder in an inking unit a printing press, in which an electrical in a cavity of the cylinder Resistor body is arranged, which is supplied by a sliding contacts electrical current is flowing through the resistor body and thus the Resistor body enveloping cylinder surface to liquefy the ink heat.
  • DE-A-40 19 741 describes a drying station for drying paper webs in Paper machines, which has a heat-insulated housing from the outside, by which the paper web to be dried is passed through. To condense the humidity emerging from the moist paper web to be dried to the Avoiding inner walls of the housing becomes a drying medium which for example air with a temperature between 85 ° C and 120 ° C, before Entry into the cavity along the back of the housing inner walls preheat them.
  • UK Patent Application No. 2 268 121 shows a protective device for protection dangerous parts of a printing unit.
  • This patent application discloses one by one horizontal swivel axis swiveling safety device with finger protection.
  • the Finger protection is together with side guards through a remote control swiveling and extends to clamping elements and cylinder bearings in the cylinder area of a printing unit.
  • UK Patent No. 1 212 722 discloses a safety device for rotating cylinders.
  • a safety device which comprises a switching element, is in front of a danger zone the gap between the cylinders and arranged parallel to the cylinder axis. At Actuation of the switching element turns the power supply to the drive motors of the cylinders interrupted.
  • EP patent application No. 0 481 801 discloses a flexographic printing unit.
  • This printing unit can be combined in sequence with a number of other printing units of a machine, each printing unit having insertion and discharge slots, printing unit cylinders, ink boxes, etc.
  • the printing unit is surrounded by a housing into which a continuous stream of filtered compressed air is introduced in order to produce and maintain a pressure in the housing which is higher than the atmospheric one Pressure is, including pressure in an exhaust vent.
  • the excess pressure inside the housing ensures that no dust or fiber particles can penetrate the printing unit and contaminate the ink or contaminate the various roller surfaces.
  • U.S. Patent No. 4,905,596 discloses a combined Cleaning and safety device for printing unit cylinders.
  • a finger guard is in front the gap between rotating cylinders is provided.
  • the Protection or the rail has an angled shape or, in Cross-section seen, a partially round or typically semicircular shape.
  • the protection or the rail is by lever supported and is slidable so that this or this out from the respective position and away from the nip can be moved when the machine is stopped.
  • U.S. Patent No. 5,024,155 discloses a finger protector for a cylinder gap. This finger protection element is on one end of a shaft pivotally attached, the one Has guide surface on one side that one of the Cylinder is opposite. The leadership area starts on the other and free end of the finger protection element in the vicinity of the nip.
  • U.S. Patent No. 5,085,142 describes an apparatus which regulate the temperature air in the environment of an inking unit.
  • condensation prevent defects in the printed material. It is another object of the present invention Surfaces of components on which condensation occurs is likely to be at a temperature level above that To keep dew point.
  • an apparatus for Preventing precipitation in machinery for processing web-like material in a processing unit arranged components, these components being a mechanism to change temperature differences between the Have surfaces of the components and the ambient air.
  • This arrangement has the advantage that a printing unit with no additional equipment needs to be provided if e.g. B. the hollow interior of a nip guard with a Medium, such as water, oil, air or a mixture thereof, which has suitable heat transfer properties, is applied.
  • This interior could also be used with a pure liquid with suitable Heat transfer properties, especially with a Glycol or other anti-freeze compound applied are, these connections in printing machines often with Water can be mixed to reduce corrosion.
  • Circuit are formed from a piping system with a feed section and a recirculation section as well as a reservoir.
  • the reservoir includes a Heat exchange element and a pumping and stirring device for Maintaining an even temperature distribution in the Reservoir.
  • a hand-operated or remote-controlled Control mechanism for the flow rate such as. B. Actuating valves, the temperature level in the Components, such as roller gap protection devices, cross beams, Containers, shielding devices, lifting rollers, be regulated accordingly.
  • the components could be electrically heated, being induction coils or various adjustable electrical resistance elements in the components use find that are slightly warmed.
  • Fig. 1 shows an upper cylinder body 1 and a lower one Cylinder body 2 of a printing unit. Between the first two upper and lower printing unit cylinders 1, 2 and two second upper and lower printing unit cylinders 16, 17 becomes a Material web 7 printed on both sides.
  • Roller gap protection 3 which protects the operator from injuries protects, has areas designated with the numbers 4 and 5 and is connected to a piping system 8, the one Feed section 9 and a recirculation section 10 has, which are both connected to a reservoir 12. In the reservoir 12 becomes a medium 13 at a constant Temperature level maintained.
  • the medium 13 in the reservoir 12 - like water, oil, air or a mixture of others Components - is by means of a pump device 15 stirred, resulting in an even temperature distribution in the medium 13 takes place in the reservoir 12.
  • a pump device 15 stirred, resulting in an even temperature distribution in the medium 13 takes place in the reservoir 12.
  • Temperature level of the medium 13 which over the Recirculation section 10 of the piping system 8 through the reservoir 12 is pumped, has changed significantly, can the temperature of the medium 13 via a Reservoir 12 associated heat exchanger 14 controlled become.
  • the piping system 8 includes Flow control devices 11 to control the flow of the Adjust heat medium 13 to component 3.
  • the component is a nip guard 3, which has a cavity.
  • the component can be more similar in a closed cycle Configuration of other components, such as shielding devices, Trusses, frames etc. of a printing unit can be integrated in order to prevent precipitation drops from forming which spoil the print quality.
  • Fig. 2 shows integrated in a protective device electrical resistance elements.
  • the gap 6 between the first upper and lower Printing unit cylinders 1, 2 and the second upper and lower Printing unit cylinders 16, 17 each have a nip protection 3 assigned.
  • Any of the above Roller nip protection devices have electrical Resistance elements 28 on the wires 19 with a Power source 18 are connected, or those connected to a single one Resistance element are provided, extending along the length of the nip protection 3 extends. In this way the Temperature of the nip protection 3 above the dew point of the surrounding atmosphere and condensation prevented.
  • Roller gap protection 3 can also shield devices, Frame parts, folding knives and the like with the one Power source 18 connected electrical Resistance elements 28 may be provided.
  • Fig. 3 shows an alternative embodiment in which a AC generator is used.
  • a AC generator is used.
  • each of the column 6 between the Cylinder surfaces 1, 2 and 16, 17 each Roller gap protection 3 associated with induction coils 21.
  • the Induction coils 21 are connected by wires 19 to one AC generator 20 connected.
  • the one in the Induction coils 21 generated flowing alternating current Eddy currents in the nip protection devices 3 or other components on which precipitation can form to the between the surfaces of the components mentioned and the to change the surrounding air temperature difference.
  • Fig. 4 shows a traverse that is in the circulation circuit of the medium 13 is integrated.
  • a traverse 3 or even the Side frame 22, 23 integrated into the piping system 8 be in which a medium 13 is circulated.
  • Fig. 5 shows an embodiment with one in the Circulation circuit integrated dampening system.
  • This Dampening unit 24 comprises an outer container 25 and one Inner container 26.
  • the outer container 25 is in the Piping system 8 integrated so that the medium 13 through the outer container 25 flows and thereby its temperature the dew point is maintained.
  • FIG. 6 Another embodiment shown in FIG. 6 represents one Blanket washing device 27, which with electrical Resistance elements 28, which are connected via wires 19 to a Power source 18 are connected, is equipped.
  • the Loss of current in the resistance elements 28 heats the Blanket washing device 27 and thus keeps her Surface temperature above the dew point, thereby creating a To prevent condensation or precipitation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Fixing For Electrophotography (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Coating Apparatus (AREA)

Claims (15)

  1. Dispositif pour empêcher la condensation de l'humidité de l'air ambiant dans des presses à imprimer rotatives, présentant les caractéristiques suivantes :
    au moins un protecteur de la fente des rouleaux ou une traverse (3) disposé dans la presse à imprimer rotative et entouré par l'air ambiant et des moyens (9 à 15 ; 18, 19, 28 ; 19, 20, 21) qui élèvent la température de surface du protecteur de la fente des rouleaux ou de la traverse (3) à un niveau de température supérieur au point de rosée de l'air ambiant.
  2. Dispositif selon la revendication 1,
    caractérisé par le fait
    que le protecteur de la fente des rouleaux ou la traverse (3) présente un espace creux par lequel peut s'écouler un fluide chauffant (13).
  3. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) circule à travers l'espace creux mentionné et un système de conduite (8), le système de conduite (8) comportant un tronçon d'amenée (9) et un tronçon de recyclage (10).
  4. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) est de l'eau.
  5. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) est de l'huile.
  6. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) est de l'air.
  7. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) est un mélange de liquides.
  8. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) est un liquide pur.
  9. Dispositif selon la revendication 2,
    caractérisé par le fait
    que le fluide chauffant (13) est un produit antigel.
  10. Dispositif selon la revendication 3,
    caractérisé par le fait
    que le système de conduite (8) comporte un réservoir (12), un échangeur de chaleur (14) et une pompe (15).
  11. Dispositif selon la revendication 3,
    caractérisé par le fait
    que le système de conduite (8) comporte un appareil (11) de commande du débit du fluide chauffant (13).
  12. Dispositif selon la revendication 1,
    caractérisé par le fait
    que les moyens (18, 19, 28 ; 19, 20, 21) prévus pour élever la température de surface du protecteur de la fente des cylindres ou de la traverse (3) sont exploités par voie électrique.
  13. Dispositif selon la revendication 12,
    caractérisé par le fait
    que les moyens (18, 19, 28 ; 19, 20, 21) prévus pour élever la température de surface du protecteur de la fente des cylindres ou de la traverse (3) comportent un élément de résistance électrique (28).
  14. Dispositif selon la revendication 12,
    caractérisé par le fait
    que les moyens (18, 19, 28 ; 19, 20, 21) prévus pour élever la température de surface du protecteur de la fente des cylindres ou de la traverse (3) comportent au moins une bobine d'induction (21).
  15. Procédé pour empêcher la condensation de l'humidité de l'air ambiant sur un protecteur de la fente des cylindres ou sur une traverse dans des presses à imprimer rotatives,
    caractérisé par le fait
    que l'on élève la température de surface du protecteur de la fente des cylindres ou de la traverse à un niveau de température supérieur au point de rosée de l'air ambiant.
EP96104652A 1995-04-25 1996-03-23 Dispositif pour empêcher la condensation dans les machines de traitement de matériaux en forme de bande Expired - Lifetime EP0739718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US427775 1995-04-25
US08/427,775 US5842417A (en) 1995-04-25 1995-04-25 Apparatus for preventing condensation in machines processing a web of material

Publications (3)

Publication Number Publication Date
EP0739718A2 EP0739718A2 (fr) 1996-10-30
EP0739718A3 EP0739718A3 (fr) 1997-04-16
EP0739718B1 true EP0739718B1 (fr) 2001-07-18

Family

ID=23696228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104652A Expired - Lifetime EP0739718B1 (fr) 1995-04-25 1996-03-23 Dispositif pour empêcher la condensation dans les machines de traitement de matériaux en forme de bande

Country Status (6)

Country Link
US (1) US5842417A (fr)
EP (1) EP0739718B1 (fr)
CN (1) CN1063710C (fr)
AT (1) ATE203203T1 (fr)
CA (1) CA2174167C (fr)
DE (1) DE59607291D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10305700B4 (de) * 2002-04-22 2005-09-29 Koenig & Bauer Ag Feuchtwerk einer Druckmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906163A (en) * 1997-12-18 1999-05-25 Heidelberg Druckmaschinen Ag Apparatus and method for preventing condensation in machines processing a web of material
CN114347677A (zh) * 2021-12-24 2022-04-15 深圳弘美数码纺织技术有限公司 一种控制打印小车喷头温度的方法、装置及打印机

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
DE137401C (fr) *
DE1611238B1 (de) * 1967-07-29 1970-12-23 Maschf Augsburg Nuernberg Ag Schutzvorrichtung an gegenlaeufigen Walzen von Druckmaschinen
DE2332153C3 (de) * 1973-06-25 1979-09-27 Mitter & Co, 4815 Schloss Holte Vorrichtung zum Einsaugen der von einer kontinuierlich arbeitenden Rotationsdruckmaschine auf eine horizontal geführte, vorzugsweise textile Warenbahn aufgedruckten Farbe
US4308042A (en) * 1980-04-11 1981-12-29 Atlantic Richfield Company Heat pump with freeze-up prevention
DE3401626A1 (de) * 1984-01-18 1985-07-18 Fischer & Krecke, 4800 Bielefeld Flexodruckmaschine mit temperaturstabilisiertem druckmaschinengestell
DE3613463A1 (de) * 1986-04-22 1987-11-05 Heidelberger Druckmasch Ag Vorrichtung an gegenlaeufigen zylindern, insbesondere von druckmaschinen, mit einem nahe an den zylinderoberflaechen angeordneten fingerschutzelement
DE3735302A1 (de) * 1987-10-17 1989-04-27 Roland Man Druckmasch Vorrichtung zum reinigen eines uebertragungszylinders einer rotationsdruckmaschine
US5085142A (en) * 1988-03-08 1992-02-04 Smith Maurice D Dampening fluid evaporator
DE3825110A1 (de) * 1988-07-23 1990-02-01 Roland Schnettler Verfahren zum einbringen von elektrostatisch aufgeladenem papier als zwichenschicht zwischen blechen, sowie vorrichtung zur durchfuehrung eines solchen verfahrens
DE8813088U1 (fr) * 1988-10-18 1988-12-01 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE3904854C1 (fr) * 1989-02-17 1990-04-26 Jagusch & Co, 8649 Wallenfels, De
DE4019741A1 (de) * 1990-06-21 1992-01-02 Peter Kaehmann Trockenstation fuer feuchtigkeit enthaltende materialien
GB9022478D0 (en) * 1990-10-17 1990-11-28 Simon Container Mach Ltd A flexographic print unit
US5126121A (en) * 1991-05-03 1992-06-30 The Dow Chemical Company Process for preparing aluminum nitride powder via controlled combustion nitridation
DE4221132C2 (de) * 1992-06-27 1995-01-19 Heidelberger Druckmasch Ag Vorrichtung zur Absicherung der Gefahrenstellen eines Druckwerkes
DE4242672C2 (de) * 1992-12-17 1995-05-11 Fritz Fels Moebelspedition Und Transportgutbeheizung für Lastkraftwagen
US5393959A (en) * 1994-01-06 1995-02-28 Tokuden Co., Ltd. Induction heating roller apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10305700B4 (de) * 2002-04-22 2005-09-29 Koenig & Bauer Ag Feuchtwerk einer Druckmaschine

Also Published As

Publication number Publication date
CA2174167C (fr) 2000-02-29
CN1063710C (zh) 2001-03-28
US5842417A (en) 1998-12-01
DE59607291D1 (de) 2001-08-23
EP0739718A2 (fr) 1996-10-30
EP0739718A3 (fr) 1997-04-16
CN1134359A (zh) 1996-10-30
ATE203203T1 (de) 2001-08-15
CA2174167A1 (fr) 1996-10-26

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