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EP0035110B1 - Calandre - Google Patents

Calandre Download PDF

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Publication number
EP0035110B1
EP0035110B1 EP81100470A EP81100470A EP0035110B1 EP 0035110 B1 EP0035110 B1 EP 0035110B1 EP 81100470 A EP81100470 A EP 81100470A EP 81100470 A EP81100470 A EP 81100470A EP 0035110 B1 EP0035110 B1 EP 0035110B1
Authority
EP
European Patent Office
Prior art keywords
pressure
roll
calender
working cylinder
roller
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
Application number
EP81100470A
Other languages
German (de)
English (en)
Other versions
EP0035110A1 (fr
Inventor
Eugen Edele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kleinewefers GmbH
Original Assignee
Kleinewefers GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6095739&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0035110(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kleinewefers GmbH filed Critical Kleinewefers GmbH
Priority to AT81100470T priority Critical patent/ATE12667T1/de
Publication of EP0035110A1 publication Critical patent/EP0035110A1/fr
Application granted granted Critical
Publication of EP0035110B1 publication Critical patent/EP0035110B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/003—Indicating or regulating the moisture content of the layer
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/06—Means for regulating the pressure
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/06—Indicating or regulating the thickness of the layer; Signal devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure

Definitions

  • the invention relates to a calender according to the preamble of claim 1.
  • downstream measuring devices serve as actual value transmitters for the smoothness, the thickness, the moisture and / or the gloss of a paper web. From these actual values, setpoints supplied by a setpoint generator and stored programs that take into account the functional relationships between the measured values on the one hand and the pressure in the roller gap on the other hand, the controller calculates values to which the force of the working cylinders of the loading device is to be adjusted with the aid of pressure control valves.
  • a roller press in particular for paper production, is also known (DE-A-2 738 781), in which a pressure measuring cell is arranged directly in the area of at least one of the bearing journals of two press rollers. The measured value is fed via a timer to a controller, which is able to adjust a loading device for the press roll in such a way that a desired loading can be maintained.
  • the load force above the upper press roll or the support force below the lower press roll is determined, but not the force in the nip.
  • the invention has for its object to provide a generic calender in which the pressure control is carried out with the greatest possible accuracy.
  • a control loop is provided to influence the web data, which relates directly to the pressure in the lowest gap. This is because an actual value of this pressure is formed using the pressure measuring elements and taking into account the weight of the lowest roller.
  • the setpoint of this gap pressure is derived from the measured web data.
  • the resulting control deviation serves to change the force generated by the loading device.
  • the gap pressure is therefore directly and not only indirectly included in the overall control. Deviations of the actual gap pressure value from the desired gap pressure value are immediately determined and corrected via the pressure measuring elements. Incorrect gap pressures and in particular impermissibly high gap pressures can therefore only be present for a very short time. Because the support force of the working cylinders can be measured very precisely and the weight of the roller can be determined with great accuracy, the pressure in the lowest nip can be determined precisely and with less effort.
  • the fact that the supporting force of the bottom roller is determined by means of the pressure measuring elements has the further advantage that the regulation takes place on the basis of the highest gap pressure. Because this nip pressure decreases from top to bottom because of the weight of the calender rolls. The regulation can therefore be carried out from the outset in such a way that excessive pressures in the roll gap are excluded. The weight of the bottom roller usually remains the same during operation. With the usual separation of the rollers, if only the bottom roller rests on the pressure measuring elements, it can be ascertained without difficulty.
  • the embodiment according to claim 4 allows the pressure measuring element to be held securely.
  • the pressure measuring element or the circuit downstream of it can be designed with a zero point shifted according to the weight of the lowest roller.
  • the configuration according to claim 6 is recommended.
  • the upper pressure measuring element makes it possible to measure exactly the additional load, which is not only important for determining the pressure in the nips, but also for example for an equal setting of the load at the two ends of the top roller.
  • a supercalender for satinizing paper webs has a plurality of rollers 1 arranged one above the other with a horizontal axis, each of which is supported in a bearing cheek 2 at its ends. All bearing cheeks 2 are slidably guided in the calender frame 3 in the vertical direction.
  • a suspension spindle 4 is arranged next to the bearing cheeks 2, which passes through the aligned holes of eyes 2 ', which are provided on each bearing cheek with the exception of the bearing cheek of the bottom roller.
  • the upper end of each suspension spindle, which is coupled with a rotary drive 5, is supported on a transverse yoke 6.
  • a nut 7 on each of the hanging spindles below the eyes of the bearing cheeks defines the size of the nip when the middle rollers and the top roller hang on the hanging spindles 4.
  • the two bearing cheeks 2 of the lowermost roller 1 ' are each supported on a piston 8 of a hydraulic cylinder 9 which can be displaced in the vertical direction and which is in turn carried by the calender frame 3.
  • a loading device is arranged above each bearing cheek 2 of the top roller 1, which is formed by a downward-acting hydraulic cylinder 11, the pistons of which underneath the bearing cheek of the top roller in the sense of a downward displacement can strain.
  • the transverse yoke 6 carries and connects these loading devices.
  • a central, blind-hole-like depression is provided, which forms a holder for a pressure measuring element designed as a pressure cell 14 in the exemplary embodiment.
  • the holder allows the pressure transducer to be inserted and removed in a simple manner, so that it can also be used only temporarily, for example for adjusting the calender, if the additional load on the rollers of the calender by means of the hydraulic cylinders is not to be measured during operation is exercised.
  • a holder could also be provided at the point on the bearing of the top roller acted upon by the piston.
  • each of the two hydraulic cylinders 9 carrying the lowermost roller is provided with a central, blind-hole-like depression 12 which is designed as a holder for a pressure measuring element, for example a pressure measuring cell 13, and therefore has a diameter , which is adapted to the outside diameter of the pressure cell 13.
  • the pressure measuring element could also be inserted, for example, in a holder at the location of the bearing of the lowermost roller that is supported on the piston 8.
  • the axial length of the depression 12 is somewhat smaller than that of the pressure cell 13, so that the associated bearing cheek 2 of the lowermost roller 1 'lies directly on the pressure cell 13.
  • the design of the holder as a recess allows the pressure cell 13 to be inserted loosely, so that an exchange or a temporary insertion is readily possible. If no pressure cell is inserted into the recess 12, then this is expediently closed by means of a cover, the thickness of which is preferably selected to be equal to the protrusion of the pressure cell over the piston end, so that the position of the lowest roller 1 'in the operating position is independent of whether the pressure cells 13 are inserted into the recesses 12 of the pistons 8 or not.
  • the zero point of the two pressure cells 13 is suppressed to such an extent that the weight of the lowermost roller 1 is compensated for.
  • the sum of the output signals of the two pressure transducers 13 is therefore equal to the force which is exerted on the rollers 1 arranged above the lowermost roller 1.
  • the desired pressure can be determined by means of the value determined by means of the pressure cells 13 Hydraulic cylinder 11 ° can be set very precisely. All that is necessary is to set the load which is exerted on the top roller by means of the hydraulic cylinders 11 in such a way that the force effective in the bottom gap has the desired value.
  • the measured value is fed to a controller, not shown, which controls the pressure of the pressure medium supplied to the hydraulic cylinders 11 in such a way that the measured actual value agrees with a target value predetermined for the controller.
  • This setpoint can be specified, for example, by a smoothness measuring device, a thickness measuring device, a moisture measuring device or a gloss measuring device, which measures the measurement size of the material web continuously or at certain intervals before or after the calendering process.

Landscapes

  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Metal Rolling (AREA)
  • Crushing And Grinding (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Claims (6)

1. Calandre pour exercer une pression sur une bande formée de fibres, avec au moins deux rouleaux superposés, qui forment plusieurs intervalles pour le passage de la bande, avec un dispositif de charge, le rouleau inférieur, parmi les rouleaux superposés, étant en appui sur au moins un vérin permettant un délestage rapide, avec un appareil de mesure qui relève le poli, l'épaisseur l'humidité et/ou le brillant de la bande, et avec un régulateur qui modifie la force exercée par le dispositif de charge en relation avec les valeurs mesurées, calandre caractérisée en ce que:
a) le rouleau inférieur (1') est en appui sur un élément de mesure de pression soumis à la force exercée par le vérin (9), qui fournit une valeur réelle de la force exercée,
b) la valeur mesurée par l'appareil de mesure est fournie au régulateur, dans lequel à chaque valeur réelle mesurée par l'appareil de mesure est associée une valeur optimale de la force exercée dans l'intervalle inférieur,
c) et le régulateur détermine une modification de réglage de pression dans l'intervalle inférieur, en fonction de la valeur optimale de la pression dans l'intervalle inférieur, de la valeur réelle de la force exercée, et du poids du rouleau inférieur, et modifie la force exercée par le dispositif de charge (11) en fonction.
2. Calandre selon la revendication 1, caractérisée en ce que l'élément de mesure de pression (13) est disposé à l'extrémité du piston du vérin (9) située contre le rouleau (1') en appui.
3. Calandre selon la revendication 1, caractérisée en ce que l'élément de pression (13) est disposé dans le support du cylindre en appui sur le vérin (9).
4. Calandre selon l'une des revendications 1 à 3, caractérisée en ce que l'élément de mesure de pression (13) est installé dans une attache formée par une cavité (12) réalisée dans la face frontale dirigée vers le rouleau (1') du piston (8) du vérin (9), ou dans une attache du support de rouleau.
5. Calandre selon la revendication 4, caractérisée en ce que l'élément de mesure de pression (13) est installé amovible dans l'attache (12).
6. Calandre selon l'une des revendications 1 à 5 avec un système de chargement comprenant un vérin pour le rouleau supérieur, caractérisée en ce qu'un élément de mesure de pression (14) est disposé à l'extrémité du piston de ce vérin (11) tournée vers le rouleau supérieur (2), ou à l'emplacement du support du rouleau supérieur en appui sur le piston.
EP81100470A 1980-02-28 1981-01-23 Calandre Expired EP0035110B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100470T ATE12667T1 (de) 1980-02-28 1981-01-23 Kalander.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3007452A DE3007452C2 (de) 1980-02-28 1980-02-28 Verfahren zum Regeln des in einem Kalander ausgeübten Druckes sowie Kalander zur Durchführung dieses Verfahrens
DE3007452 1980-02-28

Publications (2)

Publication Number Publication Date
EP0035110A1 EP0035110A1 (fr) 1981-09-09
EP0035110B1 true EP0035110B1 (fr) 1985-04-10

Family

ID=6095739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100470A Expired EP0035110B1 (fr) 1980-02-28 1981-01-23 Calandre

Country Status (7)

Country Link
US (1) US4380954A (fr)
EP (1) EP0035110B1 (fr)
JP (1) JPS5930837B2 (fr)
AT (1) ATE12667T1 (fr)
DE (1) DE3007452C2 (fr)
FI (1) FI69595C (fr)
YU (1) YU43486B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI79875C (fi) * 1983-10-17 1990-03-12 Escher Wyss Ag Kalander.
FI71374C (fi) * 1984-12-31 1986-12-19 Valmet Oy Foerfarande och anordning vid kalandrering av en bana
DE3622398C1 (en) * 1986-02-18 1987-06-19 Escher Wyss Ag Sepg. calender rolls - involves lowering pressure in hydraulic carrier support installations with time delay w.r.t. pressure to prevent damage to roll surface
FI81633C (fi) * 1988-01-13 1990-11-12 Valmet Paper Machinery Inc Anlaeggning i valsverket av en superkalander.
NL8900892A (nl) * 1989-04-10 1990-11-01 Werner & Pfleiderer Haton Bv Deeguitwalsinrichting.
DE3936048A1 (de) * 1989-10-28 1991-05-02 Escher Wyss Gmbh Verfahren zum positionieren von kalanderwalzen sowie kalander zur ausfuehrung des verfahrens
JPH0832335B2 (ja) * 1990-10-03 1996-03-29 日立造船株式会社 圧延機における圧延ロールの支持構造
US5322586A (en) * 1992-05-11 1994-06-21 Reynolds Metals Company Computer controller heat-sealing machine
DE4314670C2 (de) * 1993-05-04 1996-02-01 Kleinewefers Gmbh Kalander
CH690144A5 (de) * 1995-12-22 2000-05-15 Alusuisse Lonza Services Ag Strukturierte Oberfläche mit spitzenförmigen Elementen.
US7357072B2 (en) * 1996-12-06 2008-04-15 Eduard Kusters Maschinefabrik Gmbh & Co. Kg Calender
DE19650576C2 (de) * 1996-12-06 2001-02-15 Kuesters Eduard Maschf Kalander
US20040134361A1 (en) * 1996-12-06 2004-07-15 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Calender
DE69822853D1 (de) * 1997-05-07 2004-05-06 Metso Paper Inc Verfahren und vorrichtung zur berechnung und steuerung der linearen lastverteilung in einem mehrspalt-kalander und mehrspalt-kalander
JP2024176964A (ja) * 2023-06-09 2024-12-19 横河電機株式会社 情報提供装置、情報提供方法及び情報提供プログラム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312310A (en) * 1939-03-01 1943-03-02 Champion Paper & Fibre Co Papermaking
DE1652322A1 (de) * 1967-07-22 1971-02-25 Feldmuehle Ag Verfahren und Vorrichtung zum UEberziehen eines Flaechengebildes,insbesondere einer Papierbahn mit Streichmasse
DE2738781A1 (de) * 1977-08-27 1979-03-08 Ema Elektronik Maschinen Appar Walzenpresse, insbesondere fuer die papierfabrikation
GB2018949A (en) * 1978-04-18 1979-10-24 Escher Wyss Ltd Rolling apparatus comprising at least one controlled-deflection roll

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049004A (en) * 1958-10-16 1962-08-14 United States Steel Corp Mill-roll chock with load-responsive element
GB1053141A (fr) * 1960-03-14
FR85591E (fr) * 1963-04-10 1965-12-10
US3777656A (en) * 1972-02-17 1973-12-11 Bruderhaus Maschinen Gmbh Calender and method of operating the same
DE2224875C3 (de) * 1972-05-20 1983-03-17 Kleinewefers Gmbh, 4150 Krefeld Vorrichtung zum Belasten und Trennen der Walzen eines der Bearbeitung von Bahnen, insbesondere von Papierbahnen, dienenden Walzensatzes
FR2252142A1 (en) * 1973-11-22 1975-06-20 Quay Dynamics Ltd Automatic adjustment of strip thickness in strip rollers - continuous thickness measurement values converted into gap adjusting forces
CH604940A5 (fr) * 1975-12-08 1978-09-15 Escher Wyss Ag
DE2623492C3 (de) 1976-05-26 1981-06-04 Küsters, Eduard, 4150 Krefeld Vorrichtung zur Drucksteuerung für Walzeinrichtungen
FI60264C (fi) * 1976-08-20 1981-12-10 Valmet Oy Boejningskompenserad vals laempligen med mjuk yta foer anvaendning i kalander
DE2657455A1 (de) * 1976-12-18 1978-06-22 Bbc Brown Boveri & Cie Verfahren zur kompensation der walzenverformung an regelbar vorgespannten walzgeruesten
DE2744990C3 (de) 1977-10-06 1980-07-17 Kuesters, Eduard, 4150 Krefeld Kalander zur Druckbehandlung von Bahnen
DE2823738C2 (de) * 1978-05-31 1985-11-07 Kleinewefers Gmbh, 4150 Krefeld Verfahren zum Einebnen (Glätten) einer Papierbahn
JPS5557097A (en) * 1978-10-16 1980-04-26 Kleinewefers Gmbh Method and apparatus for rapidly separating calender roll

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312310A (en) * 1939-03-01 1943-03-02 Champion Paper & Fibre Co Papermaking
DE1652322A1 (de) * 1967-07-22 1971-02-25 Feldmuehle Ag Verfahren und Vorrichtung zum UEberziehen eines Flaechengebildes,insbesondere einer Papierbahn mit Streichmasse
DE2738781A1 (de) * 1977-08-27 1979-03-08 Ema Elektronik Maschinen Appar Walzenpresse, insbesondere fuer die papierfabrikation
GB2018949A (en) * 1978-04-18 1979-10-24 Escher Wyss Ltd Rolling apparatus comprising at least one controlled-deflection roll

Also Published As

Publication number Publication date
YU18981A (en) 1983-12-31
FI69595B (fi) 1985-11-29
ATE12667T1 (de) 1985-04-15
JPS56136320A (en) 1981-10-24
EP0035110A1 (fr) 1981-09-09
FI69595C (fi) 1987-06-30
DE3007452C2 (de) 1984-09-20
US4380954A (en) 1983-04-26
DE3007452A1 (de) 1981-09-03
JPS5930837B2 (ja) 1984-07-28
FI810466L (fi) 1981-08-29
YU43486B (en) 1989-08-31

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