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 PDFInfo
- 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
Links
Images
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)
- 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. - 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). - 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). - Dispositif selon la revendication 2,
caractérisé par le fait
que le fluide chauffant (13) est de l'eau. - Dispositif selon la revendication 2,
caractérisé par le fait
que le fluide chauffant (13) est de l'huile. - Dispositif selon la revendication 2,
caractérisé par le fait
que le fluide chauffant (13) est de l'air. - Dispositif selon la revendication 2,
caractérisé par le fait
que le fluide chauffant (13) est un mélange de liquides. - Dispositif selon la revendication 2,
caractérisé par le fait
que le fluide chauffant (13) est un liquide pur. - Dispositif selon la revendication 2,
caractérisé par le fait
que le fluide chauffant (13) est un produit antigel. - 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). - 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). - 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. - 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). - 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). - 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.
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)
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)
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)
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 (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 |
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 |
-
1995
- 1995-04-25 US US08/427,775 patent/US5842417A/en not_active Expired - Lifetime
-
1996
- 1996-03-23 DE DE59607291T patent/DE59607291D1/de not_active Expired - Lifetime
- 1996-03-23 AT AT96104652T patent/ATE203203T1/de not_active IP Right Cessation
- 1996-03-23 EP EP96104652A patent/EP0739718B1/fr not_active Expired - Lifetime
- 1996-04-15 CA CA002174167A patent/CA2174167C/fr not_active Expired - Fee Related
- 1996-04-22 CN CN96104905A patent/CN1063710C/zh not_active Expired - Fee Related
Cited By (1)
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 |
---|---|
CN1063710C (zh) | 2001-03-28 |
US5842417A (en) | 1998-12-01 |
CA2174167C (fr) | 2000-02-29 |
ATE203203T1 (de) | 2001-08-15 |
EP0739718A2 (fr) | 1996-10-30 |
EP0739718A3 (fr) | 1997-04-16 |
DE59607291D1 (de) | 2001-08-23 |
CA2174167A1 (fr) | 1996-10-26 |
CN1134359A (zh) | 1996-10-30 |
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