WO2001000413A1 - Surface treatment device - Google Patents
Surface treatment device Download PDFInfo
- Publication number
- WO2001000413A1 WO2001000413A1 PCT/EP2000/005550 EP0005550W WO0100413A1 WO 2001000413 A1 WO2001000413 A1 WO 2001000413A1 EP 0005550 W EP0005550 W EP 0005550W WO 0100413 A1 WO0100413 A1 WO 0100413A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- treatment
- web
- path
- moistening
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/002—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing cleaning devices for sheets or webs
Definitions
- the invention relates to a surface treatment device according to the preamble of claim 1.
- the invention relates to a surface treatment device for moistening or damp wiping of running surfaces in the form of rotating cylindrical rotating body peripheral surfaces or in the form of one or both sides of a web of material running from paper or film or similar thin and flexible material, each containing at least a treatment unit for each surface to be treated, each treatment unit having the following features: a positioning device with a pressing body for pressing a section of an automatically movable treatment path against the surface to be treated; a transport device for transporting the treatment web over a side of the pressing body, which faces the surface to be cleaned; a moistening device for moistening the treatment path on its path of movement to the pressing body, the treatment path having a moisture-absorbing nature from the moistening device.
- the preferred field of application of the invention is the graphics industry.
- material webs especially paper webs, of foreign materials such.
- B. to clean paper dust and web waste before the web runs for printing in a printing unit of a printing press.
- a paper web that is too moist or too dry has the risk of tearing when it enters the folder. Distributing a very small amount of moisture evenly over the entire width of the paper web and over its entire length and also metering it precisely is all the more difficult the smaller the amount of moisture or liquid that is to be applied to the paper web.
- paper webs can be printed, but also other material webs, for example foils, which have a similar flexibility and small thickness as a paper web.
- material webs made of plastic or metal normally do not need moistening in order not to tear during folding processes, but like paper webs they can be cleaned of dust and material web waste (e.g. material waste that arises when the material web is cut lengthways).
- Rotating bodies can be of any type, in particular cylinders, rollers and rollers of printing machines, including also blanket cylinders, plate cylinders, impression cylinders, web guide rolls and web cooling rolls of printing machines, for example offset presses.
- a material web treatment device according to the type specified in the preamble of claim 1 for cleaning printing paper webs is known from EP 0 527 31 6 B1.
- Your moistening device contains a plurality of nozzles, through which a liquid, preferably water, is sprayed onto a washcloth section before it reaches the pressing body.
- the washcloth by an essentially pressureless liquid supply, for. B. via a slot opening, self-priming with liquid.
- a cleaning device for cleaning one or both surfaces of a running printing paper web is known from EP 0 672 526 A1 before the relevant section of the printing paper web enters a printing press.
- the cleaning device contains a wash cloth, which can be transported from a clean cloth roll to a dirty cloth roll and runs on the transport path over a liquid transfer roller which is partially immersed in a liquid pan and transfers liquid therefrom onto the contacting wash cloth and at the same time presses the wash cloth against the paper web ,
- the transfer roller has the advantage that an approximately uniform liquid film forms on it, which is transferred to the washcloth. However, it is still very difficult to achieve uniform moistening in all areas of the paper web.
- the amount of moisture transferred from the liquid transfer roller through the washcloth to the paper web is dependent not only on the relative speeds of the surfaces in contact with one another, but also on material irregularities and material processing of the washcloth.
- a disadvantage of the known cleaning device is that with faster running paper webs, eg faster than 1 2 m / sec, either not enough moisture penetrates through the washcloth to achieve sufficient cleaning or to prevent the contacting surfaces from running dry, or, if the washcloth is transported more slowly to increase the amount of liquid to be transferred, between a squeegee effect occurs in the washcloth and the paper web, as a result of which contaminants scraped off the paper web accumulate in the squeegee gap and from time to time these can either fall off into the machine or be carried away by the paper web.
- a device for cleaning a blanket cylinder of a printing press is known.
- a wash cloth moistened by nozzles with liquid can be pressed onto the circumferential surface of the cylinder by an inflatable rubber lip.
- the object of the invention is to provide a simple way of making it possible to precisely and evenly distribute even the smallest amounts of liquid so that uniformly good cleaning or moistening of a rapidly moving surface can be achieved, for example to achieve a better one Print quality on surfaces or better foldability of running paper webs.
- the surface treatment device of the invention is characterized in that the moistening device has a liquid trough and at least one automatically drivable liquid transfer roller with a moistenable roller circumferential surface in order to remove from the Liquid trough to absorb liquid through a roller circumferential side immersed in it and to transfer it through another roller circumferential side to the treatment path at a point which is so far away from the point where the pressing body can be pressed against the treatment path along the movement path of the treatment path that the moisture has sufficient time on the path of movement of the treatment path from its moisture absorption point to its point of contact with the material path to flow to a substantially uniform moistening of the treatment path.
- FIG. 1 schematically shows a surface treatment device according to the invention in the operating state
- FIG. 3 schematically shows another embodiment of a
- Treatment unit of a surface treatment device according to the invention.
- FIG. 1 and 2 show a paper web 2, which has an approximately vertical web section 6 between two guide rollers 4 and 5 and runs in the direction of arrows 7 into a printing unit, not shown, of a printing press.
- the direction of movement of the paper web 2 can also be reversed in the direction of the arrows 8 shown in broken lines.
- a material web made of a film for example made of plastic or metal, can be provided, which is printed on in a printing press or treated in another way in another machine.
- the paper web 2 can run in the direction of the arrows 7 or 8 in a folder and be folded therein, instead of being printed on in a printing press.
- a treatment unit U 1 or U2 is arranged in opposite directions. Since both treatment units U1 and U2 can be of identical design, only one is described below and possible deviations are particularly pointed out.
- Each of the treatment units U 1 and U2 has a positioning device 1 0 with a pressure body 1 2 for pressing a section 1 4 of a drivable treatment web 1 6, in the present case a wash cloth, onto the material web side 6.1 or 6.2 of the paper web 2 to be treated.
- the pressure body 1 2 can in the cross-sectional view shown the shape of a semicircle or segment of a circle 1 2.1 or a nose-like shape 1 2.2 have and one of an adjusting device 1 8, for example a pneumatic cylinder or hydraulic cylinder or an electromagnetic device transverse to the paper web 2 in the direction of its surface 6.1 or 6.2 can be adjusted to different positions and form a stationary sliding block with a curved surface in each setting position which the wash cloth 1 6 is guided.
- the washcloth 1 6 runs between the pressing body 1 2.1 or 1 2.2 and the paper web 2.
- the wash cloth 1 6 is gradually pulled off by a winding spindle 20 (dirt roll) driven by a motor 1 9 in the direction of arrows 24 from a winding spindle 26 provided with a brake (not shown) and thereby via guide rollers 21, 22, 23 and the pressing body 1 2.1 or 1 2.2 led.
- a moistening device for moistening the washcloth 1 6 contains a liquid-containing liquid trough 30 and a liquid transfer roller 32, the roller peripheral surface 34 of which is made of metal, preferably chrome, and is a closed surface.
- the roller circumferential surface 34 can also consist of another material, for example rubber or plastic, and can be provided with depressions or openings instead of a closed, smooth surface. However, the preferred embodiment is a smooth chrome surface.
- the liquid transfer roller 32 is rotatably supported and can be driven by a motor 36 in the direction of an arrow 38. The liquid transfer roller 32 extends over the entire width of the washcloth 1 6, which extends over the entire width of the paper web 2.
- the liquid transfer roller 32 can be contacted with the washcloth 1 6 at a point 40 which lies between one of the guide rollers 22 and the point 42, where the wash cloth section 1 4 which can be contacted by the pressure body 1 2.1 or 1 2.2 against a section 44 the Paper web 2 can be pressed.
- the liquid which is transferred from the roller circumferential surface 34 and the liquid trough 30 to the washcloth 1 6, has sufficient time on the path of movement from one contact point 40 to the other contact point 42 to be absorbed by the wash cloth 1 6 and to be absorbed therein over the entire length Spread the width of the washcloth 1 6 and evenly in the longitudinal direction of the washcloth and form a moisture area with uniformly distributed moisture.
- even the smallest amounts of liquid can be transferred in a finely metered manner from the liquid trough 30 to the paper web 2, even if the paper web 2 runs at a very high speed.
- the invention also works if there is synchronism between the surfaces in contact with one another, ie the same speed of movement in the same direction of movement. However, only liquid would be transferred from the liquid trough 30 to the paper web 2, but the paper web 2 would not be cleaned. To achieve a cleaning effect, it is necessary that a relative movement takes place between the wash cloth 1 6 and the paper web 2, through which the wash cloth 1 6 can wipe foreign material from the paper web 2, e.g. B. paper dust, paper waste and foreign particles from the outside environment.
- the wash cloth 1 6 can be driven in the same direction as the paper web 2, but with a different movement speed, according to the arrows 7 and 24, or opposite to the paper web 2 according to the arrows 8 and 24.
- the direction of movement 24 of the washcloth 1 6 is preferably directed upwards on the pressing body 1 2.1 or 1 2.2, so that no dirt (dust, paper residues) can fall off, but rather is wrapped in the dirty-cloth roll of the winding spindle 20.
- the direction of rotation 38 of the liquid transfer roller 32 is preferably such (or vice versa) that its peripheral surface on the wash cloth 1 6 moves in the same direction as this wash cloth 1 6 with the same or preferably different surface speed.
- the liquid transfer roller 32 can be adjusted by an actuator 46 either in a rest position distant from the washcloth 1 6 or in a position contacting the washcloth 1 6 at point 40. Furthermore, it can be provided to adjust the liquid transfer roller 32 more or less deeply into the wash cloth 1 6 in order to thereby vary the wrap angle over which the wash cloth 1 6 wraps around the liquid transfer roller 32 at the point 40. In this way, the amount of liquid transferred from the liquid transfer roller 32 to the wash cloth 16 can also be adjusted.
- the liquid transfer roller 32 is positioned at a distance from the washcloth 1 6 and the pressing body 1 2.1 or 1 2.2 is open Distance from the wash cloth 1 6 is set so that the wash cloth 1 6 is at a distance from the paper web 2 and there is no contact between them.
- the rotational speed of the liquid transfer roller 32 is automatically set or controlled by an operator by an automatic control in accordance with the speed of movement of the paper web 2 and in accordance with operational settings.
- a moistened washcloth section of the washcloth 1 6 must first be transported from the liquid transfer cylinder 32 to the pressure body 1 2.1 or 1 2.2 before the washcloth 1 6 can be applied to the paper web 2 and pressed on by this pressure body.
- the wash cloth 1 6 is gradually transported from the take-up spindle 22 over the liquid transfer roller 32 and the pressing body 1 2.1 or 1 2.2 to ensure that the Wash cloth in the cleaning area on the pressure body 1 2.1 or 1 2.2 is sufficiently moistened.
- the number of transport steps of the washcloth 1 6 per unit of time are automatically controlled or regulated by an operator depending on the speed of movement of the paper web 2 and on operating settings.
- paper dust and paper residues stripped from the paper web 2 are absorbed by the washing cloth 1 6 and automatically wrapped in the roll of dirty cloth on the winding spindle 20 and then remain in this roll of dirty cloth.
- the roller peripheral surface 34 of the liquid transfer roller 32 has a liquid-absorbing property.
- the washcloth 1 6 can absorb water from the roller circumferential surface 34. The water can pass through the washcloth 16 on the transport route between the two contact points 40 and 42 and can be evenly distributed in the washcloth.
- the liquid transfer roller 32 is arranged on the side of the wash cloth 1 6 facing away from the paper web 2.
- the liquid transfer roller 32 can be arranged on the side of the wash cloth 16 facing the paper web 2.
- a washcloth 16 can be used which is designed to absorb liquid only on its side facing the liquid transfer cylinder 32, but is impermeable to liquid on the side of the washcloth facing away from it.
- a common liquid reservoir 50 can be provided for the two treatment units U 1 and U2 on both sides of the paper web 2. from which the liquid is supplied to the liquid tubs 30 from both treatment units U1 and U2. Liquid can be fed from the liquid reservoir 50 by a pump 52 via a flow control device 54 and adjoining flow lines 56 and 58 into the liquid troughs 30 of the two treatment units U 1 and U2. Each liquid trough 30 has a liquid overflow (not shown in detail) for keeping the liquid level in them constant. Liquid overflowing from the liquid troughs 30 flows back through return lines 60 and 62 through a filter 64 into the liquid reservoir 50. Liquid is replenished from a supply line 66 as a function of its liquid level, for example by a float switch 68 of the liquid store 50 controlling a valve 70 of the supply line 66.
- the liquid can be pure water, water provided with additives or another liquid, preferably so-called "fountain solution", which is used in the offset printing process to form ink-repellent areas on a printing plate cylinder.
- Such fountain solution consists of water, to which alcohol or alcohol substitute and so-called additives are added, through which the print quality is determined and which can also contain additives that prevent algae formation or the development of bacteria in the fountain solution.
- the use of fountain solution is particularly expedient if the printing press is an offset printing press, in particular a web offset printing press.
- FIG. 3 shows possible modifications of the surface treatment device.
- 3 shows a loosely rotatable or drivable roll 1 2.3 as a pressing body for applying and / or pressing the washing cloth 1 6 onto the paper web 2.
- FIG. 3 shows the possibility of to use two or more liquid transfer rollers 32.1 and 32.2 instead of a single liquid transfer roller 32, a first liquid transfer roller 32.1 being partially immersed in the liquid tray 30 to receive liquid on its peripheral surface.
- the last liquid transfer roller 32.2 by way of the liquid transfer can be placed on the washcloth 16 at the contact point 40 and, depending on the embodiment, can be wrapped more or less far from the washcloth.
- the two liquid transfer rollers 32.1 and 32.2 are arranged parallel to one another and touch over their entire length along a line of contact, so that the liquid is transferred from one liquid transfer roller to the other. Both are powered. Instead of the two liquid transfer rolls, three or more liquid transfer rolls can also be used.
- the surface treatment device according to the invention is suitable not only for cleaning and / or moistening the surfaces of running material webs such as paper web 2, but also of rotating surfaces of cylinders, rollers and rollers, in particular in printing machines and in other machines for processing finished paper or other materials such as foils.
- the wash cloth 1 6 can be a "pre-moistened” wash cloth which already contains moisture in the form of water, dampening water for offset printing, detergent for cleaning cylinder surfaces or other organic or inorganic substances on the unwinding spindle 26.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001506100A JP2003503181A (en) | 1999-06-29 | 2000-06-16 | Surface treatment equipment |
EP00938796A EP1189752A1 (en) | 1999-06-29 | 2000-06-16 | Surface treatment device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999129843 DE19929843A1 (en) | 1999-06-29 | 1999-06-29 | Surface treatment device |
DE19929843.2 | 1999-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001000413A1 true WO2001000413A1 (en) | 2001-01-04 |
Family
ID=7912970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/005550 WO2001000413A1 (en) | 1999-06-29 | 2000-06-16 | Surface treatment device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1189752A1 (en) |
JP (1) | JP2003503181A (en) |
CN (1) | CN1359331A (en) |
DE (1) | DE19929843A1 (en) |
WO (1) | WO2001000413A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202007018741U1 (en) | 2007-12-08 | 2009-04-02 | Hartmut Lehmann Metallbau Gmbh | Device for cleaning printing paper |
CN102107554B (en) * | 2010-03-12 | 2013-04-24 | 陈善忠 | Printing process and printing auxiliary agent used by same |
CN103507405B (en) * | 2012-06-29 | 2017-02-01 | 上海宇智科技有限公司 | Wiping device |
US8672019B1 (en) | 2012-12-27 | 2014-03-18 | Berndorf Band Gmbh | Cleaning unit for a continuous metal strip as well as a strip casting installation with such a cleaning unit |
CN104981302A (en) | 2012-12-27 | 2015-10-14 | 百德福钢带有限公司 | Cleaning installation for a continuous belt consisting of metal, and a strip caster installation comprising such a cleaning installation |
JP2019018127A (en) * | 2017-07-12 | 2019-02-07 | 株式会社 ハリーズ | Cleaning system, cleaning method of transparent substrate, and manufacturing method of electronic component |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2047167A (en) * | 1979-04-19 | 1980-11-26 | Baldwin Gegenheimer Corp | Blanket cylinder cleaner |
EP0672526A1 (en) * | 1994-03-18 | 1995-09-20 | Comtec Co., Ltd. | Paper surface cleaning device |
EP0527316B1 (en) * | 1991-08-14 | 1995-10-11 | Baldwin-Gegenheimer GmbH | Web cleaning device for cleaning a web to be printed |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1005826B (en) * | 1954-02-26 | 1957-04-04 | Kullenbuersten Kullen & Co K G | Device for moistening paper webs in motion |
DE2249740B2 (en) * | 1972-10-11 | 1976-08-26 | Basf Ag, 6700 Ludwigshafen | METHOD AND DEVICE FOR CONTINUOUS CLEANING OF FAST-RUNNING FILM WEBES |
DE3740044A1 (en) * | 1987-11-26 | 1989-06-08 | Kotterer Grafotec | Device for removing soiling on a printing carrier |
DE3838674A1 (en) * | 1988-11-15 | 1990-05-17 | Baldwin Gegenheimer Gmbh | PRINTING MACHINE |
DE4414663A1 (en) * | 1993-04-30 | 1994-11-03 | Heidelberger Druckmasch Ag | Web cooling device |
DE9315701U1 (en) * | 1993-10-14 | 1993-12-23 | Baldwin-Gegenheimer Gmbh, 86165 Augsburg | Washing belt for washing printing press cylinders |
-
1999
- 1999-06-29 DE DE1999129843 patent/DE19929843A1/en not_active Withdrawn
-
2000
- 2000-06-16 WO PCT/EP2000/005550 patent/WO2001000413A1/en not_active Application Discontinuation
- 2000-06-16 JP JP2001506100A patent/JP2003503181A/en active Pending
- 2000-06-16 CN CN 00809726 patent/CN1359331A/en active Pending
- 2000-06-16 EP EP00938796A patent/EP1189752A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2047167A (en) * | 1979-04-19 | 1980-11-26 | Baldwin Gegenheimer Corp | Blanket cylinder cleaner |
EP0527316B1 (en) * | 1991-08-14 | 1995-10-11 | Baldwin-Gegenheimer GmbH | Web cleaning device for cleaning a web to be printed |
EP0672526A1 (en) * | 1994-03-18 | 1995-09-20 | Comtec Co., Ltd. | Paper surface cleaning device |
Also Published As
Publication number | Publication date |
---|---|
EP1189752A1 (en) | 2002-03-27 |
CN1359331A (en) | 2002-07-17 |
DE19929843A1 (en) | 2001-01-04 |
JP2003503181A (en) | 2003-01-28 |
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