EP3471962A1 - Vorrichtung zum kontrollierten ableiten von flüssigkeiten mit einer zweikomponentigen abtropfkante - Google Patents
Vorrichtung zum kontrollierten ableiten von flüssigkeiten mit einer zweikomponentigen abtropfkanteInfo
- Publication number
- EP3471962A1 EP3471962A1 EP17734010.6A EP17734010A EP3471962A1 EP 3471962 A1 EP3471962 A1 EP 3471962A1 EP 17734010 A EP17734010 A EP 17734010A EP 3471962 A1 EP3471962 A1 EP 3471962A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge
- liquid
- roller
- drip edge
- drip
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/20—Ink-removing or collecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/26—Construction of inking rollers
Definitions
- the invention relates to devices in which controlled draining of liquids is to be ensured, e.g. in a fountain roller in a printing machine.
- Drip edges are known in the art and are in practice always used where a liquid that wets, for example, a substantially perpendicular to gravity surface passively, ie driven by gravity, controlled at a certain point of the device to drip shall be. This is to prevent the surface arranged behind the drip edge from coming into contact with the liquid. In addition, the dripping liquid can be collected under the drip edge.
- Drip edges are usually attached to surfaces that z. B are arranged substantially perpendicular to the direction of gravity, and at least temporarily wetted with a liquid that you want to drip in a controlled manner from this surface.
- Drip edges usually have a V-shape, ie an acute-angled edge from the two edges depart, the tip or edge is aligned in the direction of gravity. The liquid travels along the flank to the edge of the drip edge. Since the liquid would have to move against the force of gravity on the opposite flank after reaching the edge, a drop forms at the edge, which then drops at the drip edge.
- Drip edges are mainly used for fixed surfaces, eg in construction, for protection against water.
- rotating systems for example in printing machines with dipping rollers
- drip edges are not known, there are usually used other solutions.
- the reason for this is that a liquid film is more likely to be generated in rotating systems because the surface tension causes the liquid to be dragged in the direction of rotation and thus stretched. As a result, initially no drop forms. Only when a sufficiently large liquid bead is built, a dripping takes place, which is why conventional, one-component drip edges are often not sufficient. Often, the problem then arises that the wetting of the surface also takes place beyond the tip of the drip edge, and the liquid thus also comes into contact with surfaces to be protected from the liquid.
- this object is achieved by a device according to claims 1 to 8, a roller according to claims 9 to 13 and a use of a device with a two-component drip edge according to claim 14 and by a printing machine according to claim 15.
- a device having a surface which is wettable by a liquid and which has a two-component drip edge is disclosed.
- the bicomponent drip edge is formed by a V-shaped protrusion on the surface with one edge oriented in the direction of gravity and two flanks leading away therefrom. Both flanks are made of different materials.
- the first flank which is aligned with the liquid-wetted surface, may then have an attractive behavior with respect to the liquid, while the second flank may have a repulsive behavior with respect to the liquid. Attractive means good wettability, while repulsive means worse is defined wettable.
- the first flank is better wettable with the liquid than the second flank of the two-part drip edge.
- the wettability of a surface with a specific liquid depends on the surface tensions of the substances involved, ie the material of the flanks and the liquid. Generally, a material having a higher surface tension or a surface tension approximately equal to the liquid is more wettable than a material having a lower surface tension than the liquid. Materials whose surface tension is greater or equal to that of the liquid show an attractive behavior with respect to the liquid and are considered to be readily wettable. Materials whose surface tension is smaller than those of the liquid show a repulsive behavior towards the liquid and are considered to be not readily wettable.
- the surface tension of the liquid should therefore be less than or equal to the surface tension of the first flank and greater than the surface tension of the second flank.
- the material of the first flank thus has a higher surface tension than the material from which the second flank is formed. Since a drip edge is used to protect against unwanted liquid contact, the two-component drip edge is placed on the surface such that the first edge, which is more wettable, is aligned with the liquid-wetted surface, while the second edge, which is less wettable, on the opposite side is arranged, in which the liquid contact is to be avoided.
- the boundary between the two materials runs on the edge of the drip edge.
- the edge is preferably rectilinear.
- the surfaces of the flanks can be flat.
- the surfaces of the flanks can also be curved. When the surface is wetted with liquid, this liquid will initially spread to the top, or edge of the drip edge. Driven by gravity, droplets will form on the edge. In addition to gravity, the droplet formation is still promoted by the material change at the edge of the drip edge, since the material from which the second edge of the drip edge is formed has a lower surface tension and thus shows a repulsive behavior with respect to the liquid.
- the device according to the invention is designed in the form of a rotationally symmetrical body, in which the two-component drip edge is circular about the rotationally symmetrical body, e.g. a cylinder and directed outwards. Even as the cylinder rotates, the two-component design of the drip edge ensures controlled dripping of the liquid.
- the device according to the invention can be used as materials from which the first flank of the two-component drip edge is formed, i. Materials with an attractive behavior towards the wetting liquid, ie with a higher surface tension, e.g. Iron, polyamide, polyethylene terephthalate, polymethyl methacrylate, polyethylene, polyvinyl chloride, polyoxymethylene, polystyrene or steel.
- the device according to the invention can be used as materials from which the second flank of the two-component drip edge is formed, i. Materials having a repulsive behavior towards the wetting liquid, i. with lower surface tension, e.g. Polypropylene, paraffin wax, epoxy resin or Teflon.
- the two-component drip edge may be formed with a first flank of steel and a second flank of Teflon.
- the flanks of the two-component drip edge can form an angle between 20-120 °, preferably an angle between 20 and 60 °.
- the angles at which the flanks are facing the surface can be made asymmetrical be. It is particularly advantageous if the second flank forms a small angle to the force of gravity, so that the liquid can rise as little as possible. The sharper the angle, the more effective the dripping effect.
- the height of the drip edge i. the distance of the edge of the drip edge from the surface depends on the dimensions of the surface.
- the drip edge may e.g. have a height of 4-20 mm.
- the width of the drip edge on the surface results from the angle of the edges and the height of the drip edge. If the drip edge has a height of 4-20 mm and the angle between 20-120 °, the width may e.g. 3-20 mm.
- a roller for transferring liquids having a drip edge according to the present invention.
- Such rolls are e.g. used in printing machines, in which color is transferred from a paint tray through a fountain roller on a pickup roller, which in turn prints the ink on the object to be printed.
- the roller according to the invention consists of a transfer cylinder, which is provided at the two longitudinal ends with connecting pieces.
- the transfer cylinder is partially in operation in a liquid, e.g. Color, immersed, or he takes over the liquid from another roller.
- the transfer cylinder may have a relatively large diameter. In any case, the diameter must be greater than that of the connecting pieces so that they do not submerge in the liquid bath. He can e.g. have a diameter of 8-50 cm, preferably between 10 and 25 cm.
- the connectors should not be immersed in the liquid or come into contact with the fluid-delivering roller. Therefore, they must have a smaller diameter than the transfer cylinder. They are used to attach the transfer cylinder in storage and to connect to the drive of a rotary motor, such as a printing press, which sets the transfer cylinder in rotation.
- the connectors must have one Have diameter that ensures mechanical stability against bending or breaking of the roller.
- the diameter of the connectors can be between 4 and 12 cm, for example.
- the connecting pieces of the roller according to the disclosure each have at least one two-component drip edge, which is arranged in a circle around the connecting piece.
- the two-component drip edge is arranged on the connecting piece such that the flank consisting of the material with the attractive property, ie the material with the higher surface tension, is arranged in the direction of the transfer cylinder, and the flank consisting of the material with the repulsive property,
- the lower surface tension is arranged in the direction of the ends of the rollers, so that a spread of the liquid, eg the color, in the bearings of the printing press is prevented.
- the flanks of the two-component drip edge can form an angle between 20 and 120 °.
- the first flank may be made shallower than the second flank.
- the height of the drip edge i. the distance of the edge of the drip edge from the surface depends on the dimensions of the surface.
- the drip edge may e.g. have a height of 4-20 mm.
- the width of the drip edge on the surface results from the angle of the edges and the height of the drip edge. It can e.g. 3-30 mm.
- the invention further relates to the use of a device with a two-component drip edge according to one of claims 1 to 8 for producing a low-maintenance transfer roller for a printing press.
- the invention further relates to a printing machine having a roller according to one of claims 8 to 13.
- FIG. 1 shows a schematic representation of a two-component drip edge.
- Figure 2 shows a schematic representation of a second embodiment of a circular arranged around a cylinder drip edge
- Figure 3 shows a schematic representation of a roll according to the invention
- Figure 4 shows schematically the use of a roll according to the invention in a printing press.
- Figure 1 shows schematically the structure of the device with a two-component drip edge, which is mounted on the underside a perpendicular to the gravity-oriented surface (1).
- the bicomponent drip edge is formed of a first flank (19) and a second flank (20) which meet in the edge (18) which is oriented in the direction of gravity.
- the first flank (19) is disposed on the side of the surface wetted with liquid (5).
- the first flank (19) is made of a material having approximately the same surface tension as the wetting liquid (5) or a larger surface tension than the liquid (5).
- the second flank (20) is formed of a material having a smaller surface tension than the material of which the first flank (19) is formed.
- the surface tension of the material used for the second flank (20) is advantageously also smaller than the surface tension of the liquid with which the device comes into contact.
- the liquid (5) spreads on the surface (17) and the first flank (19).
- a droplet forms at the edge of the drip edge of the surface drips.
- Figure 2 shows schematically a longitudinal section through a device for the controlled discharge of liquids with a rotationally symmetrical surface in the form of a cylinder.
- a two-component drip edge formed by an edge formed concentric with the surface and oriented outwardly and having first and second flanks leading away from the edge, the first flank connecting to the liquid-wettable surface and a higher surface tension than the second edge.
- the two flanks each have the shape of a truncated cone.
- the second flank (4) is fixed by the clamping ring (10).
- FIG. 3 shows a roll according to the disclosure, as it can be used, for example, as a dip roll in a printing press.
- the transfer cylinder which dips into operation in the paint, has at both ends in each case a connecting part (7).
- the fountain roller is rotated during operation, for example, at a rotational speed of 15 revolutions per minute.
- the paint then not only wets the jacket of the cylinder, but also migrates during operation to the surface of the connecting parts (7).
- a first and a second one-component drip edge (8, 9) are advantageously arranged on the connecting part. These may be formed from the material of the connecting part itself, for example made of steel or iron.
- These one-component Abtropfkanten (8, 9) have a height of 5 mm and at the surface of the connecting part has a width of about 4 mm.
- the angle should be selected as acute as possible, to avoid cuts in cleaning a minimum angle makes sense.
- the angle formed by the two flanks of the pre-drip edge can be for example 40 °. Since the roller rotates in operation, the complete shut-off of the liquid, when using the roller in a printing machine, a complete shut-off of the color, compared to the camps is not guaranteed. For this reason, a two-component drip edge according to the invention is still arranged after these one-component prescrubbing edges.
- the first flank of the drip edge is formed from the material of the connecting part (7), in this case made of steel.
- the two flanks of the two-component drip edge form an angle of 97 °, wherein the first flank (3) in relation to the axis of the connecting part is advantageously made flatter than the second flank (4).
- the second flank (4) consists of a Teflon ring, which is attached directly to the first flank (3) and fixed by the clamping ring (10). With the bearings (1 1), the roller can be installed eg in a printing press.
- FIG. 4 schematically shows the use of the roller according to the invention in connection with FIG. 3 in a printing press (15). Individual elements of the illustration of Figure 3 are omitted in view of a clearer representation.
- the dipping roller (15) is partially immersed in a dipping bath (14), from which it picks up the ink and transfers it to the pressure roller (13).
- the fountain roller (15) is fixed on the connecting parts (7) and the bearings (1 1) in the printing machine (16) and connected to the rotary motor (12). The arrangement of the drip edges, the color is dropped above the dip bath and can not crawl into the bearings and the engine.
- a printing machine according to the disclosure is therefore less maintenance-intensive.
Landscapes
- Coating Apparatus (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016007574.0A DE102016007574A1 (de) | 2016-06-21 | 2016-06-21 | Zweikomponentige Abtropfkante |
| PCT/EP2017/064893 WO2017220470A1 (de) | 2016-06-21 | 2017-06-19 | Vorrichtung zum kontrollierten ableiten von flüssigkeiten mit einer zweikomponentigen abtropfkante |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3471962A1 true EP3471962A1 (de) | 2019-04-24 |
| EP3471962B1 EP3471962B1 (de) | 2020-04-08 |
Family
ID=59253481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17734010.6A Active EP3471962B1 (de) | 2016-06-21 | 2017-06-19 | Vorrichtung zum kontrollierten ableiten von flüssigkeiten mit einer zweikomponentigen abtropfkante |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11420437B2 (de) |
| EP (1) | EP3471962B1 (de) |
| CN (1) | CN109789695B (de) |
| DE (1) | DE102016007574A1 (de) |
| WO (1) | WO2017220470A1 (de) |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1249885B (de) | 1966-06-29 | 1967-09-14 | Wmdmoller S-. Holscher, Lengerich (Westf) | Wannenfarbwerk für schnellaufende flexo-druckmaschinen |
| US4191106A (en) * | 1975-12-01 | 1980-03-04 | K and Manufacturing Company, Inc. | Printing plate clamping assembly |
| DE3541458A1 (de) * | 1985-11-23 | 1987-05-27 | Koenig & Bauer Ag | Kurzfarbwerk fuer offsetrotationsdruckmaschinen |
| DE8809259U1 (de) * | 1988-07-20 | 1988-09-01 | MAN Roland Druckmaschinen AG, 6050 Offenbach | Rasterwalze |
| DE68916922T2 (de) * | 1988-12-23 | 1994-11-03 | Harris Graphics Corp | Vorrichtung zum Vermeiden von unerwünschtem Flüssigkeitsdurchgang an einer Stelle zur Durchflusskontrolle. |
| DE4036661C1 (de) * | 1990-11-17 | 1992-06-17 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
| JPH04137872U (ja) * | 1991-06-10 | 1992-12-22 | 徳山曹達株式会社 | 印刷用版胴 |
| US5715748A (en) * | 1993-07-22 | 1998-02-10 | Minami Engineering Co., Ltd. | Squeegee for screen printing machine |
| DE19725061A1 (de) * | 1996-10-25 | 1998-04-30 | Koenig & Bauer Albert Ag | Rakel für eine Rotationsdruckmaschine |
| DE19860334A1 (de) | 1998-12-24 | 2000-06-29 | Will E C H Gmbh & Co | Anordnung an einem Druckwerk zum stirnseitigen Abdichten zweier Walzen |
| DE10065680C2 (de) * | 2000-12-29 | 2003-04-03 | Hakle Kimberly De Gmbh | Interlabialer Hygieneartikel |
| DE10219845C1 (de) * | 2002-05-03 | 2003-11-20 | Koenig & Bauer Ag | Siebdruckmaschine und Siebzylinder |
| DE50209547D1 (de) * | 2002-09-10 | 2007-04-05 | Ilford Imaging Ch Gmbh | Verfahren und Vorrichtung zur Vorhangbeschichtung eines bewegten Trägers |
| CN2775787Y (zh) * | 2005-03-22 | 2006-04-26 | 房德祥 | 导光板显示装置 |
| FR2890594B1 (fr) * | 2005-09-15 | 2009-01-30 | Goss Int Montataire Sa | Ensemble pour presse rotative. |
| CN2883003Y (zh) * | 2005-10-07 | 2007-03-28 | 无锡锦腾丰机械设备厂 | 印刷机械用网纹辊 |
| CN201106137Y (zh) * | 2007-04-20 | 2008-08-27 | 苏州市益维高科技发展有限公司 | 浸胶机滴边装置 |
| CN201511590U (zh) * | 2009-09-09 | 2010-06-23 | 上海高斯印刷设备有限公司 | 自串着墨辊 |
| CN201559342U (zh) * | 2009-09-24 | 2010-08-25 | 陕西北人印刷机械有限责任公司 | 一种卷筒料印刷机的收料压辊装置 |
| CN102618979B (zh) * | 2011-01-28 | 2014-09-10 | 武汉纺织大学 | 一种具有在线加热加湿的柔顺倍捻锭子 |
| CN202106660U (zh) * | 2011-06-13 | 2012-01-11 | 深圳市科彩印务有限公司 | 一种烫金凹凸模具 |
| DE102011081981A1 (de) * | 2011-09-01 | 2013-03-07 | Gebr. Schmid Gmbh & Co. | Vorrichtung und Anlage zum Bearbeiten von flachen Substraten |
| CN203868335U (zh) * | 2014-04-30 | 2014-10-08 | 宁波易天地信远密封技术有限公司 | 一种密封环 |
| US20150374152A1 (en) * | 2014-06-27 | 2015-12-31 | Tilahun Anshu | Double-Lipped Drink Holding Device |
-
2016
- 2016-06-21 DE DE102016007574.0A patent/DE102016007574A1/de not_active Ceased
-
2017
- 2017-06-19 WO PCT/EP2017/064893 patent/WO2017220470A1/de not_active Ceased
- 2017-06-19 US US16/312,739 patent/US11420437B2/en active Active
- 2017-06-19 CN CN201780038749.7A patent/CN109789695B/zh active Active
- 2017-06-19 EP EP17734010.6A patent/EP3471962B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3471962B1 (de) | 2020-04-08 |
| DE102016007574A1 (de) | 2017-12-21 |
| US11420437B2 (en) | 2022-08-23 |
| US20200307176A1 (en) | 2020-10-01 |
| CN109789695A (zh) | 2019-05-21 |
| WO2017220470A1 (de) | 2017-12-28 |
| CN109789695B (zh) | 2021-07-20 |
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