EP0739718A2 - 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
EP0739718A2
EP0739718A2 EP96104652A EP96104652A EP0739718A2 EP 0739718 A2 EP0739718 A2 EP 0739718A2 EP 96104652 A EP96104652 A EP 96104652A EP 96104652 A EP96104652 A EP 96104652A EP 0739718 A2 EP0739718 A2 EP 0739718A2
Authority
EP
European Patent Office
Prior art keywords
component
temperature
heating medium
increasing
medium
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
EP96104652A
Other languages
German (de)
English (en)
Other versions
EP0739718A3 (fr
EP0739718B1 (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
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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 relates to a device for preventing condensation on a protective device in a printing press.
  • UK patent application No. 2 268 121 shows a protective device for protecting dangerous points in a printing unit.
  • This patent application discloses a protective device with finger protection that can be pivoted about a horizontal pivot axis.
  • the finger guard can be swiveled together with side guards by a remote control 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 comprising a switching element is arranged in a danger zone in front of the gap between the cylinders and parallel to the cylinder axis. When the switching element is actuated, the current supply to the drive motors of the cylinders is 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 flow 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 a 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 couple cylinders.
  • a finger protection strip is provided in front of the gap between rotating cylinders.
  • the protection or the rail has an angled shape or, viewed in cross section, a partially round or typically semicircular shape.
  • the guard or rail is supported by levers and is slidable so that it can be moved out of position and away from the nip when the machine is stopped.
  • U.S. Patent No. 5,024,155 discloses a finger guard for a cylinder gap. This finger protection element is pivotally attached to one end of a shaft which has a guide surface on one side which lies opposite one of the cylinders. The guide surface begins at the other and free end of the finger protection element in the vicinity of the nip.
  • US Patent No. 5,085,142 describes a device which brings air into the environment of an inking unit to regulate the temperature.
  • an apparatus for preventing precipitation in machines for processing web-like material comprises components arranged in a processing unit, these components having a mechanism for changing temperature differences between the surfaces of the components and the ambient air.
  • This arrangement has the advantage that a printing unit does not have to be provided with additional equipment if, for. B. the hollow interior of a nip protection 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, in particular with a glycol or other antifreeze compound, these compounds being frequently mixed with water in printing presses in order to reduce corrosion.
  • a closed circuit which consists of a pipeline system with a feed section and a recirculation section and a reservoir.
  • the reservoir comprises a heat exchange element and a pumping and stirring device for maintaining an even temperature distribution in the reservoir.
  • actuating valves the temperature level in the components, such as roller nip protection devices, traverses, containers, shielding devices, lifting rollers, can be regulated accordingly.
  • the components could be electrically heated, induction coils or various adjustable electrical resistance elements being used in the components which are heated slightly.
  • a material web 7 is printed on both sides between two first upper and lower printing unit cylinders 1, 2 and two second upper and lower printing unit cylinders 16, 17.
  • a roll nip guard 3, which protects the operator from injuries, has areas designated by the numbers 4 and 5 and is connected to a pipeline system 8 which has a feed section 9 and a recirculation section 10, both of which are connected to a reservoir 12.
  • a medium 13 is kept at a constant temperature level in the reservoir 12.
  • the medium 13 in the reservoir 12 - such as water, oil, air or a mixture of other constituents - is stirred by means of a pump device 15, whereby a uniform temperature distribution in the medium 13 in the reservoir 12 takes place.
  • the temperature of the medium 13 can be controlled via a heat exchanger 14 assigned to the reservoir 12.
  • the piping system 8 comprises flow control devices 11 to adjust the flow of the heat medium 13 to the component 3.
  • the component is a roll nip protection 3, which has a cavity.
  • other components such as shielding devices, traverses, frames, etc., of a printing unit can be integrated in order to prevent precipitation drops from forming there, which spoil the printing quality.
  • the nip 6 between the first upper and lower printing unit cylinders 1, 2 and the second upper and lower printing unit cylinders 16, 17 is each assigned a nip guard 3.
  • Each of the nip protection devices mentioned has electrical resistance elements 28 which are connected to a current source 18 via wires 19 or which are provided with a single resistance element which extends along the length of the nip protection 3. In this way, the temperature of the nip protection 3 is kept above the dew point of the surrounding atmosphere and condensation is prevented.
  • shielding devices, Frame parts, folding blades and the like can be provided with the electrical resistance elements 28 connected to a current source 18.
  • each of the gaps 6 between the cylinder surfaces 1, 2 and 16, 17 is assigned a roll gap protection 3 with induction coils 21.
  • the induction coils 21 are connected by wires 19 to an AC generator 20.
  • the alternating current flowing in the induction coils 21 generates eddy currents in the nip protection devices 3 or other components on which precipitation can form in order to change the temperature difference between the surfaces of the components mentioned and the surrounding air.
  • Fig. 4 shows a traverse which is integrated in the circulation circuit of the medium 13.
  • a cross member 3 or even the side frames 22, 23 can be integrated into the piping system 8 in which a medium 13 is circulated.
  • Fig. 5 shows an embodiment with a dampening unit integrated in the circulation circuit.
  • This dampening unit 24 comprises an outer container 25 and an inner container 26.
  • the outer container 25 is integrated in the piping system 8, so that the medium 13 flows through the outer container 25 and thereby its temperature is kept above the dew point.
  • a further embodiment shown in FIG. 6 represents a rubber blanket washing device 27 which is equipped with electrical resistance elements 28 which are connected to a power source 18 via wires 19. Of the Loss of current in the resistance elements 28 heats the blanket washer 27 and thus maintains its surface temperature above the dew point, thereby preventing 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)
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 true EP0739718A2 (fr) 1996-10-30
EP0739718A3 EP0739718A3 (fr) 1997-04-16
EP0739718B1 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
EP0924068A2 (fr) * 1997-12-18 1999-06-23 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif destiné à combattre les phénomènes de condensation de l'eau dans des machines à imprimer

Families Citing this family (2)

* 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
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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE137401C (fr) *
GB1212722A (en) * 1967-07-29 1970-11-18 Maschf Augsburg Nuernberg Ag A safety device for contra-rotating cylinders
DE8813088U1 (de) * 1988-10-18 1988-12-01 MAN Roland Druckmaschinen AG, 6050 Offenbach Druckwerk für eine Offsetrotationsdruckmaschine
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
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
DE4242672A1 (en) * 1992-12-17 1993-08-19 Fritz Fels Moebelspedition Und Goods vehicle for the transport of condensation-sensitive goods - has heater which circulates warmed air through airtight containers
DE9406258U1 (de) * 1994-01-06 1994-07-14 Tokuden Co., Ltd., Kyoto Induktionsheizwalzenvorrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE137401C (fr) *
GB1212722A (en) * 1967-07-29 1970-11-18 Maschf Augsburg Nuernberg Ag A safety device for contra-rotating cylinders
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 (de) * 1988-10-18 1988-12-01 MAN Roland Druckmaschinen AG, 6050 Offenbach Druckwerk für eine Offsetrotationsdruckmaschine
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
DE4242672A1 (en) * 1992-12-17 1993-08-19 Fritz Fels Moebelspedition Und Goods vehicle for the transport of condensation-sensitive goods - has heater which circulates warmed air through airtight containers
DE9406258U1 (de) * 1994-01-06 1994-07-14 Tokuden Co., Ltd., Kyoto Induktionsheizwalzenvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0924068A2 (fr) * 1997-12-18 1999-06-23 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif destiné à combattre les phénomènes de condensation de l'eau dans des machines à imprimer
EP0924068A3 (fr) * 1997-12-18 2000-01-05 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif destiné à combattre les phénomènes de condensation de l'eau dans des machines à imprimer

Also Published As

Publication number Publication date
CN1063710C (zh) 2001-03-28
US5842417A (en) 1998-12-01
CA2174167C (fr) 2000-02-29
ATE203203T1 (de) 2001-08-15
EP0739718A3 (fr) 1997-04-16
DE59607291D1 (de) 2001-08-23
CA2174167A1 (fr) 1996-10-26
CN1134359A (zh) 1996-10-30
EP0739718B1 (fr) 2001-07-18

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