EP0864690B1 - Walzenmaschine - Google Patents
Walzenmaschine Download PDFInfo
- Publication number
- EP0864690B1 EP0864690B1 EP98103867A EP98103867A EP0864690B1 EP 0864690 B1 EP0864690 B1 EP 0864690B1 EP 98103867 A EP98103867 A EP 98103867A EP 98103867 A EP98103867 A EP 98103867A EP 0864690 B1 EP0864690 B1 EP 0864690B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- roll
- machine according
- roller
- roll machine
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0233—Soft rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
Definitions
- the thickness of the Layer below 90% of the value is limited to that prevailing in the nip Compressive stress forms a load limit.
- the in Rolling nip compressive stresses are known or can be calculated.
- the unreinforced plastic is no longer used from a certain thickness can become because it flakes off the roller during operation or otherwise damaged. This limit leaves find out by experiment if necessary. If you now keep a certain distance from the border and the Plastic layer makes thinner, then you have one a measure of how thick the plastic can be, on the other hand you have a certain security, so smaller ones Malfunctions do not cause permanent damage of the plastic will lead.
- the layer preferably consists of a sprayable Plastic and is sprayed on.
- a sprayable Plastic By spraying you get a relatively good connection on the one hand of the plastic with the roller body. on the other hand relatively thin layers can be achieved, so you get a roll cover that is local, in the microscopic range, the necessary elasticity global, i.e. in the macroscopic Area that shows no appreciable compliance can lead to deformation of the roller.
- the layer is formed by a shrink tube.
- a shrink tube Such one Shrink tubing is pushed over the roll body and then applying heat to the roller body preciselyschrumpt. So that the elastic can be relatively quickly Create a layer on the surface of the roller and at the same time connect reliably to the roller body. The elastic layer needs to be replaced also possible without any problems. To do this, only the Shrink tube cut and removed. The roller body is then ready to receive a new one Heat shrink tubing available if necessary only has to be turned and sanded smooth.
- the surface of the layer is on one Roughness value Ra of 0.1 ⁇ m or less ground.
- Ra roughness value
- Such smooth surfaces can be found on the thin ones Achieve layers relatively well. Because the roughness the roller "impresses" into the material web the smoothness the smoother the surface, the better the material web is. When using epoxy resin even achieve a roughness of 0.05 ⁇ m.
- a material web 2 in the present
- the two rollers 3, 4 with generally known, but not shown Means pressed against each other, so that the material web 2 is treated under pressure in the nip 5.
- This Pressure treatment can compress the web of material to lead. But it is also often used to To improve the surface quality of the material web 2.
- the nip 5 is a so-called "soft" nip formed by it is that the roller 3 has an elastic surface 6.
- the surface 6 is elastic because the roller 3 a very thin layer 7 on its peripheral surface has an elastic material on a roller body 8 is applied.
- the roller body 8 can be a solid steel roller core or cast iron, for example chilled iron or gray iron. But it can also, as shown in dashed lines is a deflection adjustable to a roll shell Roller act inside of it Pressure elements 9 is applied to a carrier 10 are supported.
- the modulus of elasticity is significantly reduced and is only 3,500 N / mm 2 , the conditions are more favorable.
- the curve with the triangles shows, the curves of the thick harder base and the thin soft base become almost congruent.
Description
- Fig. 1
- eine schematische Ansicht einer Walzenmaschine mit zwei Walzen,
- Fig. 2
- Isolinien der Schubspannung im Vergleich der sehr dünnen elastischen Schicht (a) zu einer elastischen Schicht mit herkömmlicher Schichtdicke (b)
- Fig. 3
- den Verlauf der Schubspannung im wesentlichen in Radialrichtung und
- Fig. 4
- Gegenüberstellung errechneter Kontaktbreiten.
Erfindung | herkömmlicher Kalander | |
Durchmesser der harten Walze 4,4' | 459 mm | 459 mm |
Durchmesser der weichen Walze 3,3' | 415 mm | 415 mm |
Streckenlast | 200 N/mm | 200 N/mm |
Papierdicke im Einlauf | 72 µm | 72 µm |
Dicke der Schicht 7, 7' | 1,75 mm | 12,5 mm |
Elastizitätsmodul | 3.500 N/mm2 | 6.900 N/mm2 |
Claims (15)
- Walze für eine Walzenmaschine mit einem Walzenkörper (8), der aus Stahl oder Guß gebildet ist, und einer elastischen Schicht (7), die auf den Umfang des Walzenkörpers (8) aufgebracht ist und eine elastische Oberfläche der Walze bildet, dadurch gekennzeichnet, daß die elastische Schicht (7) in Radialrichtung sehr dünn ist und eine Dicke (d) von 4 mm oder weniger aufweist.
- Walzenmaschine mit mindestens einem Walzenspalt (5), der durch eine weiche Walze (3) nach Anspruch 1 und eine Gegenwalze (4) gebildet ist.
- Walzenmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Walze (3) aufgrund der elastischen Schicht (7) im lokalen Bereich eine Oberflächenelastizität aufweist, im makroskopischen Bereich aber im Hinblick auf die Elastizität praktisch das gleiche Verhalten wie der Walzenkörper (8) zeigt.
- Walzenmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Dicke (d) der elastischen Schicht (7) 2,3 mm oder weniger beträgt.
- Walzenmaschine nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Schicht (7) aus einem Material gebildet ist, das einen E-Modul von 4.000 N/mm2 oder weniger aufweist.
- Walzenmaschine nach Anspruch 5, dadurch gekennzeichnet, daß die Dicke (d) der Schicht (7) so gewählt ist, daß sich im Betrieb die gleiche Druckspannungsverteilung ergibt, wie bei gleicher Strekkenlast, gleicher Walzenspaltgeometrie und einem Elastizitätsmodul eines faserverstärkten Materials der Schicht von 6.000 N/mm2 oder mehr.
- Walzenmaschine nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Dicke (d) der Schicht kleiner ist als die Entfernung des Schubspannungsmaximums von der äußeren Oberfläche (6) der Schicht (7).
- Walzenmaschine nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die mit Bahn errechnete Nipbreite bei einer Streckenlast von 200 N/mm einen Wert aufweist, der mindestens um den Faktor 3,5 größer ist als die Dicke (d) der Schicht (7).
- Walzenmaschine nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Schicht (7) aus einem unverstärkten Kunststoff gebildet ist.
- Walzenmaschine nach Anspruch 9, dadurch gekennzeichnet, daß die Dicke (d) der Schicht (7) auf einen Wert unterhalb von 90 % des Werts begrenzt ist, der bei den im Walzenspalt (5) herrschenden Druckspannungen eine Belastungsgrenze bildet.
- Walzenmaschine nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß die Schicht (7) aus reinem Epoxidharz besteht.
- Walzenmaschine nach einem der Ansprüche 2 bis 11, dadurch gekennzeichnet, daß die Schicht (7) aus einem spritzfähigen Kunststoff und aufgespritzt ist.
- Walzenmaschine nach einem der Ansprüche 2 bis 12, dadurch gekennzeichnet, daß die Schicht (7) als Lackschicht ausgebildet ist.
- Walzenmaschine nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß die Schicht (7) durch einen Schrumpfschlauch gebildet ist.
- Walzenmaschine nach einem der Ansprüche 2 bis 14, dadurch gekennzeichnet, daß die Oberfläche (6) der Schicht (7) auf einen Rauhigkeitswert Ra von 0,1 µm oder weniger geschliffen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19710573A DE19710573C2 (de) | 1997-03-14 | 1997-03-14 | Kalander, insbesondere für Papierbahnen |
DE19710573 | 1997-03-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0864690A1 EP0864690A1 (de) | 1998-09-16 |
EP0864690B1 true EP0864690B1 (de) | 2003-05-21 |
EP0864690B2 EP0864690B2 (de) | 2009-01-07 |
Family
ID=7823357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98103867A Expired - Lifetime EP0864690B2 (de) | 1997-03-14 | 1998-03-05 | Walzenmaschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US6073548A (de) |
EP (1) | EP0864690B2 (de) |
JP (1) | JP3035260B2 (de) |
KR (1) | KR100272068B1 (de) |
AT (1) | ATE241038T1 (de) |
CA (1) | CA2231457C (de) |
DE (2) | DE19758443A1 (de) |
EA (1) | EA000479B1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19928753A1 (de) * | 1999-06-23 | 2000-12-28 | Voith Sulzer Papiertech Patent | Elastische Walze und Verfahren zum Herstellen einer solchen |
DE10037835B4 (de) * | 2000-08-03 | 2005-10-20 | Voith Paper Patent Gmbh | Verfahren zum Betreiben eines Kalanders und Kalander |
DE10046055A1 (de) | 2000-09-18 | 2002-03-28 | Voith Paper Patent Gmbh | Elastische Walze |
US6921450B2 (en) * | 2001-10-31 | 2005-07-26 | Marquip, Llc | Soft contact roll for a single facer |
DE10220834A1 (de) * | 2002-05-08 | 2003-11-27 | Kuesters Eduard Maschf | Walze |
DK178040B1 (da) | 2013-03-11 | 2015-04-07 | Gram Equipment As | Fyldeaggregat og fremgangsmåde til at fylde et konfektureprodukt i en form eller beholder |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3091173A (en) * | 1961-05-19 | 1963-05-28 | Polymer Processes Inc | Synthetic article |
US3707752A (en) † | 1970-10-28 | 1973-01-02 | Beloit Corp | Roll covering |
US4250605A (en) † | 1978-01-19 | 1981-02-17 | The Carborundum Company | Biaxially stressed fluorinated polymer roll cover and method for making same |
DE2844051C3 (de) * | 1978-10-10 | 1982-01-28 | Küsters, Eduard, 4150 Krefeld | Verfahren zum Kühlen eines Walzenpaars sowie Kalander zur Durchführung des Verfahrens |
US4571798A (en) † | 1983-09-19 | 1986-02-25 | Beloit Corporation | Urethane covered paper machine roll |
DE8531065U1 (de) * | 1985-11-02 | 1986-11-13 | Ramisch Kleinewefers Gmbh, 4150 Krefeld, De | |
JPH01246464A (ja) * | 1988-03-23 | 1989-10-02 | Kin Yosha Kk | カレンダー用樹脂ロール |
DE3832999A1 (de) † | 1988-09-29 | 1990-04-05 | Herbert Rottmann | Rotationssymmetrische walze, insbesondere fuer maschinen der foerdertechnik |
FI890953A (fi) † | 1989-02-28 | 1990-08-29 | Valmet Paper Machinery Inc | Vals eller valsbelaeggning i cellulosamaskin, pappersmaskin eller efterbehandlingsmaskin foer papper och foerfarande foer framstaellning av denna samt anvaendning av denna. |
DE4022334C2 (de) * | 1990-07-13 | 1994-02-24 | Voith Gmbh J M | Verfahren zum Betreiben eines Auftragswerks für Papier oder Karton und Auftragswerk hierfür |
JPH04300385A (ja) * | 1991-03-29 | 1992-10-23 | Kanzaki Paper Mfg Co Ltd | キャストコート紙の製造方法 |
JPH0554599A (ja) * | 1991-08-26 | 1993-03-05 | Nec Corp | 光デイスク |
FI100314B (fi) † | 1992-02-06 | 1997-11-14 | Valmet Paper Machinery Inc | Paperikoneen telan pinnoittaminen ja telan pinnoite |
DE69314966T2 (de) † | 1992-10-16 | 1998-03-26 | Beloit Technologies Inc | Verfahren zur herstellung einer presswalzenbekleidung |
JP2791628B2 (ja) * | 1993-06-28 | 1998-08-27 | 株式会社金陽社 | カレンダー仕上方法 |
DE4429455A1 (de) † | 1994-08-19 | 1996-02-22 | Kleinewefers Gmbh | Verfahren zum Verdichten einer Papierbahn und Preßwerk zur Durchführung des Verfahrens |
JP3008009B2 (ja) * | 1994-12-12 | 2000-02-14 | ヤマウチ株式会社 | 磁気記録媒体のカレンダー用樹脂ロールおよびその製造法 |
DE19506301C2 (de) * | 1995-02-23 | 2000-07-13 | Voith Sulzer Finishing Gmbh | Kalander für Papierbahnen |
DE19508349C2 (de) † | 1995-03-09 | 2003-04-03 | Voith Paper Patent Gmbh | Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb |
DE19511153C2 (de) * | 1995-03-27 | 1997-04-30 | Voith Sulzer Finishing Gmbh | Kalanderwalze, insbesondere für die Papierbehandlung |
DE19511595C2 (de) * | 1995-03-29 | 1997-04-24 | Voith Sulzer Finishing Gmbh | Kalanderwalze mit einem zylindrischen Basiskörper |
CA2171361C (en) * | 1995-03-29 | 1999-03-30 | Christian Wimmar Schmitz | Calender roller |
DE19521402C2 (de) † | 1995-06-13 | 2002-02-07 | Voith Paper Gmbh | Kalander für die Behandlung einer Papierbahn |
JPH0920993A (ja) * | 1995-07-04 | 1997-01-21 | Toray Ind Inc | Cfrpロールおよびその製造方法 |
FI2640U1 (fi) * | 1996-03-22 | 1996-11-22 | Valmet Corp | Tela, erityisesti soft- tai superkalanterin tela |
DE19635845C1 (de) * | 1996-09-04 | 1998-06-10 | Voith Sulzer Finishing Gmbh | Kalanderwalze mit einem Bezug aus elastischem Kunststoff |
-
1997
- 1997-03-14 DE DE19758443A patent/DE19758443A1/de not_active Withdrawn
-
1998
- 1998-03-05 EP EP98103867A patent/EP0864690B2/de not_active Expired - Lifetime
- 1998-03-05 DE DE59808401T patent/DE59808401D1/de not_active Expired - Lifetime
- 1998-03-05 AT AT98103867T patent/ATE241038T1/de active
- 1998-03-06 CA CA002231457A patent/CA2231457C/en not_active Expired - Fee Related
- 1998-03-11 JP JP10059694A patent/JP3035260B2/ja not_active Expired - Fee Related
- 1998-03-11 US US09/038,112 patent/US6073548A/en not_active Expired - Lifetime
- 1998-03-13 KR KR1019980008448A patent/KR100272068B1/ko not_active IP Right Cessation
- 1998-03-13 EA EA199800205A patent/EA000479B1/ru not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2231457C (en) | 2002-05-14 |
JP3035260B2 (ja) | 2000-04-24 |
KR100272068B1 (ko) | 2000-11-15 |
ATE241038T1 (de) | 2003-06-15 |
EA199800205A1 (ru) | 1998-10-29 |
EP0864690B2 (de) | 2009-01-07 |
KR19980080227A (ko) | 1998-11-25 |
EP0864690A1 (de) | 1998-09-16 |
US6073548A (en) | 2000-06-13 |
CA2231457A1 (en) | 1998-09-14 |
DE59808401D1 (de) | 2003-06-26 |
DE19758443A1 (de) | 1998-09-24 |
JPH10292287A (ja) | 1998-11-04 |
EA000479B1 (ru) | 1999-08-26 |
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