EP1575857A1 - Vakuum-kühlwalze - Google Patents
Vakuum-kühlwalzeInfo
- Publication number
- EP1575857A1 EP1575857A1 EP03775207A EP03775207A EP1575857A1 EP 1575857 A1 EP1575857 A1 EP 1575857A1 EP 03775207 A EP03775207 A EP 03775207A EP 03775207 A EP03775207 A EP 03775207A EP 1575857 A1 EP1575857 A1 EP 1575857A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- roller
- vacuum
- channels
- vacuum cooling
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/12—Advancing webs by suction roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/514—Modifying physical properties
- B65H2301/5144—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
- B65H2406/331—Rotary suction means, e.g. roller, cylinder or drum arranged for rotating while moving along material to be handled, e.g. rolling on material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/36—Means for producing, distributing or controlling suction
- B65H2406/361—Means for producing, distributing or controlling suction distributing vacuum from stationary element to movable element
- B65H2406/3612—Means for producing, distributing or controlling suction distributing vacuum from stationary element to movable element involving a shoe in sliding contact with flanges of a rotating element
Definitions
- the invention relates to a vacuum chill roll for web-shaped materials, in particular for paper or board webs, plastic or metal foils, the jacket of which has air passage openings which can be acted upon by a negative pressure at least in the loop area of the web and have the means for cooling the jacket surface.
- a roller for cooling or heating a material web is known from DE 198 14 597 C1.
- the roller described there has a roll shell with a heat exchanger, which is arranged within the roll shell and is connected to a supply arrangement for the inflow and outflow of an outer, primary heat transfer fluid.
- the secondary side of the heat exchanger includes the inner heat transfer fluid which is sprayed starting from the coaxially arranged heat exchanger against the inner roll shell, wherein the circuit has a pump assembly arranged in the roller. From the inner roll shell, the heat transfer fluid passes through the pump assembly back into the heat exchanger in the middle of the roller, where it delivers the heat absorbed to the primary-side circuit of the heat transfer fluid.
- the cooling of the roller thus takes place on the inner surface of the roller, so that the outer surface of the roller is only indirectly cooled.
- the described vacuum roller comprises a jacket which can be driven in rotation about a stationary inner component and has air passage openings on its entire lateral surface, and with a vacuum chamber which is arranged in the looping region of the material web and can be subjected to negative pressure.
- the negative pressure passes through the inner tube and through holes through the jacket of the inner tube in the interior of the roller in the vacuum chambers and from there to the air passage openings.
- a combined vacuum cooling roll is known from DE 41 18 039 A1.
- grooves are provided, between which there are webs which support a perforated skin.
- the grooves communicate with grooves in a stationary member which are connected to a vacuum shaft so that a tensile force is applied to the web of material by negative pressure while the cooling medium cools the web through the skin.
- the cooling medium is supplied via a hollow shaft and passed via supply lines in a space located between an inner and outer drum shell. The spaces are separated by ribs that extend diagonally across the circumference of the drum shell. At the other end of the roller, the cooling medium is also led out again via pipes and a hollow shaft from the roller. The heat transfer takes place via an arranged on the roller thin skin on the outer heat jacket to the cooling medium. The heat transfer is made difficult by the many boundary layers and the vacuum in the grooves of the outer drum shell. Another disadvantage is the complex structure of the leadership of the cooling medium through the roller.
- the invention has for its object to improve a vacuum chill roll to the effect that achieved with minimal design effort improved cooling of the roll shell and a as large and uniform negative pressure on the roll surface is generated.
- the roller Since only holes and milled grooves are introduced into the roll shell and the supply lines also consist of holes, the roller is relatively easy to manufacture.
- FIG. 1 shows the cross section through a vacuum cooling roll, which is accommodated in a machine frame.
- the roller 1 shows a vacuum chill roll 1, which is suspended from two receptacles 2, 3 in the plant chair 4.
- a bearing 5 In the receptacle 2 is a bearing 5 and in the receptacle 3 a bore 6 included.
- the roller 1 consists essentially of a bearing part 7, a front flange 8, the roll shell 9, a further end flange 10, a fixed to the front flange pulley 11, a tubular inner member 12 and attached to the inner member 12 in axial Direction extending and radially extending partitions 13, 14 and the transverse to the axis and extending radially partition walls 15, 16.
- the roll shell 9 is made of a metallic material having a thermal conductivity of at least 100 W / (m K), preferably aluminum is used. A steel will be used in the case, for example, if the material properties of the aluminum alloys are no longer sufficient for designing the design for large lengths of the rolls. To increase the friction and wear resistance, the surface of the roll shell 9 can be tempered.
- the coating is preferably carried out by anodizing or plasma coating with ceramic materials.
- the cooling channels 21 are introduced as axially extending over the roll length bores in the roll shell 9, while the distance between the cooling channels 10 mm to 100 mm, which are arranged distributed uniformly over the circumference.
- the diameter of the holes is between about 8 mm and 30 mm, depending on the thickness of the material web.
- the respective adjacent cooling channels 21 are flowed through in opposite directions.
- the supply of the cooling medium takes place via a cooling channel 21 and the return of the cooling medium via a Zuzhoukühlkanai 21 arranged scaffold constitutionalkühlkanal 21.
- the roll shell 9 thus follows each Zuzhoukühlkanal 21 a recirculation cooling channel 21. This has a decisive influence on the temperature distribution in the roll shell 9. If a roll shell 9 flows through in one direction only, the one end of the roll heats up more strongly than the other end due to the heated cooling medium, as a result of which the cooling medium is supplied. The result is a high temperature difference between the roll ends.
- the cooling medium is fed to and removed from the roll jacket 9 on both sides via the end flanges 8, 10.
- the principle of opposing behavior with regard to the cooling channels arranged next to one another is also maintained, so that there is a slight temperature difference at the ends of the rolls.
- openings 22 are introduced in the region between the axially extending bores, the cooling channels.
- the openings 22 serve as air passage openings for generating a negative pressure on the outer roller surface.
- openings 22 of the same diameter are introduced into the roll shell 9 in a regular distribution.
- a pattern generating parallelogram on the circumference of the roll can be achieved by arranging the openings 22 axially offset by 20 mm and in the circumferential direction by 30 mm.
- the number of openings 22, depending on the required sub-pressure on the roll surface of 1 hole per 100 cm 2 to 100 holes per 100 cm 2 ver-changed.
- the diameter of the openings 22 can vary from 1 mm to 10 mm. So z. B. for thin material webs preferably opening diameter of 1 mm to 3 mm used.
- the openings 22 may be connected according to the invention via shallow grooves in the roll shell 9. As shallow grooves while grooves are designated with a depth of about 2 mm.
- the supply line 19 is connected to a cooling channel 21, through which the cooling medium is supplied to the roll shell 9.
- a cooling channel 21 Through which the cooling medium is supplied to the roll shell 9.
- the inner member 12 is fixed on one side rotatably 6 on the receptacle 3 and received on the other side by means of a shaft journal 26 in a bearing 27 in the bearing part 7, so that the roll shell 9 is able to rotate about the inner member 12.
- a shaft journal 26 in a bearing 27 in the bearing part 7 so that the roll shell 9 is able to rotate about the inner member 12.
- the cooling medium is conveyed by means of a rotary inlet 28 in the flow channel 17 and passes through the leads 19 into the cooling channels 21 in the roll shell 9.
- the cooling medium absorbs the heat from the roll shell 9, through the web was heated up.
- the use of the material web causes on the one hand a good heat transfer and on the other hand a secure adhesion and transporting the Material web, so that sufficiently large tensile forces can be transmitted.
- the cooling medium flows into the connected cooling channel 21 via the roll shell 9 back to the supply line 20 and then in the return 18 to finally exit through the rotary inlet 28 again from the cooling circuit.
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10257496A DE10257496B3 (de) | 2002-12-10 | 2002-12-10 | Vakuum-Kühlwalze |
DE10257496 | 2002-12-10 | ||
PCT/EP2003/011613 WO2004052764A1 (de) | 2002-12-10 | 2003-10-21 | Vakuum-kühlwalze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1575857A1 true EP1575857A1 (de) | 2005-09-21 |
EP1575857B1 EP1575857B1 (de) | 2008-08-27 |
Family
ID=32477484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03775207A Expired - Lifetime EP1575857B1 (de) | 2002-12-10 | 2003-10-21 | Vakuum-kühlwalze |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070149376A1 (de) |
EP (1) | EP1575857B1 (de) |
CN (1) | CN1745026A (de) |
DE (2) | DE10257496B3 (de) |
WO (1) | WO2004052764A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102653161A (zh) * | 2012-05-09 | 2012-09-05 | 中国人民银行印制科学技术研究所 | 一种印刷滚筒 |
PL2740549T3 (pl) * | 2012-12-07 | 2016-10-31 | Rolka napędowa urządzenia zwijającego walcowni | |
ITUA20161465A1 (it) * | 2016-03-08 | 2017-09-08 | Gtk Timek Group Sa | Rullo termico/aspirante o soffiante. |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3932248A (en) * | 1973-09-28 | 1976-01-13 | Keaton Clyde D | Method and apparatus for making laminated board with a pocketed core |
DE3241869A1 (de) * | 1982-11-12 | 1984-05-17 | Winkler & Dünnebier, Maschinenfabrik und Eisengießerei GmbH & Co KG, 5450 Neuwied | Vorrichtung zur saugluftsteuerung |
FR2622145B1 (fr) * | 1987-10-23 | 1994-05-27 | Lacaux Freres Papeteries Carto | Cylindre cannele pour une machine de fabrication de carton ondule |
US5103898A (en) * | 1990-07-11 | 1992-04-14 | Worldwide Converting Machinery | Cooled vacuum pull roll |
DE4036121C2 (de) * | 1990-07-26 | 1997-06-12 | Schwaebische Huettenwerke Gmbh | Heizwalze |
DE4024955A1 (de) * | 1990-08-07 | 1992-02-13 | Voith Gmbh J M | Umlenkwalze zur verwendung vorzugsweise in einer ein-sieb-trockengruppe |
DE4341730A1 (de) * | 1993-12-08 | 1995-06-14 | Bhs Corr Masch & Anlagenbau | Riffelwalze für die Herstellung von Wellpappe |
DE19635845C1 (de) * | 1996-09-04 | 1998-06-10 | Voith Sulzer Finishing Gmbh | Kalanderwalze mit einem Bezug aus elastischem Kunststoff |
DE19814597C1 (de) * | 1998-04-01 | 1999-10-14 | Voith Sulzer Papiertech Patent | Walze |
DE19847799A1 (de) * | 1998-10-16 | 2000-04-20 | Bachofen & Meier Ag Buelach | Zugwalze für bahnförmige Materialien, insbesondere für Papier- oder Kartonbahnen, Kunststoff- oder Metallfolien |
-
2002
- 2002-12-10 DE DE10257496A patent/DE10257496B3/de not_active Expired - Fee Related
-
2003
- 2003-10-21 DE DE50310418T patent/DE50310418D1/de not_active Expired - Lifetime
- 2003-10-21 EP EP03775207A patent/EP1575857B1/de not_active Expired - Lifetime
- 2003-10-21 US US10/538,604 patent/US20070149376A1/en not_active Abandoned
- 2003-10-21 CN CNA2003801093037A patent/CN1745026A/zh active Pending
- 2003-10-21 WO PCT/EP2003/011613 patent/WO2004052764A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2004052764A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004052764A1 (de) | 2004-06-24 |
EP1575857B1 (de) | 2008-08-27 |
US20070149376A1 (en) | 2007-06-28 |
CN1745026A (zh) | 2006-03-08 |
DE10257496B3 (de) | 2004-10-14 |
DE50310418D1 (de) | 2008-10-09 |
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