EP0035110A1 - Calandre - Google Patents

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Publication number
EP0035110A1
EP0035110A1 EP81100470A EP81100470A EP0035110A1 EP 0035110 A1 EP0035110 A1 EP 0035110A1 EP 81100470 A EP81100470 A EP 81100470A EP 81100470 A EP81100470 A EP 81100470A EP 0035110 A1 EP0035110 A1 EP 0035110A1
Authority
EP
European Patent Office
Prior art keywords
pressure
roller
rolling mill
piston
measuring element
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
Application number
EP81100470A
Other languages
German (de)
English (en)
Other versions
EP0035110B1 (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(A1) "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 method having the features of the preamble of claim 1 and a rolling mill with the feature of the preamble of claim 2.
  • the pressure which is exerted on the material web in the nip cannot be set to a certain value as precisely as would be desirable in many cases. This applies not only to those embodiments in which, in addition to the roller weight, an effective load is generated by means of the working cylinders on which the bottom roller is supported, but also for those embodiments in which the additional roller load is generated by means of working cylinders which press on the top roller.
  • the force acting as an additional load can be set much more precisely than in the first case, in which the working cylinders also have to generate the lifting force compensating for the weight of the roller set, so the additional loading represents only a fraction of the total lifting force of the working cylinders.
  • inaccuracies due to friction or tilting of the displaceably guided bearings also lead to deviations between the additional pressure prevailing in the nip and the additional roller load generated by the loading device. This is particularly annoying when material webs are treated, the quality of which is considerably impaired by an incorrectly set pressure in the nip, for example as a result of a loss of volume, such as can occur in a paper web, when the pressure in the nip is so high.
  • the invention has for its object to provide a method for controlling or regulating the pressure exerted on a web of material in the gap between two rollers, which makes it possible to maintain the desired value with great accuracy, but without requiring a great deal of effort.
  • This object is achieved by a method having the features of claim 1.
  • the pressure prevailing in the nip deviates from the supporting force which is applied by the working cylinders which support the lower roller only by the weight of the lower roller, which is known with great accuracy. Therefore, only the weight of the lower roller need be subtracted from the measured value in order to obtain the measured value of the pressure prevailing in the nip. Because the supporting force of the working cylinder can be measured very precisely, for example by means of a pressure load cell, the pressure in the nip can also be large in this way Accuracy can be determined.
  • the invention is also based on the object of designing a rolling mill with the associated loading device in such a way that a measurement of the pressure in the roll gap and a corresponding regulation or control can be carried out in the simplest possible way.
  • This problem is solved by a rolling mill with the features of claim 1.
  • the installation of a pressure measuring element in the end of the piston of the working cylinder pointing towards the roller to be supported or the bearing of this roller which is supported on the piston can be implemented in a structurally simple manner and is also advantageous in that a direct measurement of the supporting force takes place, which differs from the compressive force in the nip only by the weight of the directly supported roller. With such an installation of a measuring element, the total compressive force effective in the nip can therefore be determined by a simple correction.
  • a pressure transducer is provided as the pressure measuring element, since it can be installed particularly easily in the piston.
  • the piston for receiving the pressure measuring element can have a recess in the end face facing the roller, which depression serves as a holder for the pressure measuring element.
  • a pressure measuring ring also called a hydraulic nut, works well.
  • the pressure measuring element when the pressure measuring element is interchangeably inserted in the holder is particularly advantageous. It is not just the replacement in the event of a malfunction or damage possible. It is also possible, for example, to remove the pressure load cells after an adjustment of the rolling mill or to use them for a new adjustment only during maintenance.
  • the pressure measuring element or the circuit downstream of it can be designed with a zero point shifted according to the weight of the lowermost roll.
  • 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 guided in the calender frame 3 so as to be displaceable in the vertical direction.
  • a suspension spindle 4 is arranged next to the bearing cheeks 2, which has the holes aligned with one another gene penetrated by 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 56, is supported on a transverse yoke /.
  • One nut 7 each on the hanging spindles below the eyes of the bearing cheeks defines the size of the nip when the center 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 sensor 14 in the exemplary embodiment.
  • the holder allows the pressure transducer to be inserted and removed in a simple manner, so that it can only be used temporarily, for example for adjusting the calender, if the additional load which is not to be measured during operation is to be measured, which is exerted on the rollers of the calender by means of the hydraulic cylinders 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 sensor 13, and therefore has a diameter , which is adapted to the outer diameter of the pressure cell 13.
  • the pressure measuring element could, however, also be inserted, for example, in a holder at the location of the bearing of the lowermost roller which is supported on the piston 8.
  • the axial length of the recess 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 temporary insertion is readily possible. If no pressure cell is inserted into the recess 12, 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 above 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 cells 13 is therefore equal to the force which is exerted on the rollers 1 arranged above the lowest roller 1.
  • the desired pressure can be determined by means of the pressure transducers 13 using the value 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 cylinder 11 so that the force acting in the bottom gap has the desired value.
  • 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 continuously or at certain intervals measures the measured quantity of the material web before or after the calendering process.

Landscapes

  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (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)
  • Treatment Of Fiber Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Metal Rolling (AREA)
  • Crushing And Grinding (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
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 true EP0035110A1 (fr) 1981-09-09
EP0035110B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5975976A (en) * 1995-12-22 1999-11-02 Alusuisse Technology & Management Ltd. Method of making structured surface with peak-shaped elements

Families Citing this family (13)

* 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
US20040134361A1 (en) * 1996-12-06 2004-07-15 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Calender
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
JP2002508810A (ja) * 1997-05-07 2002-03-19 バルメット コーポレイション 多重ニップカレンダにおける線圧分布の計算・調整方法および装置と多重ニップカレンダ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2022163A (en) * 1978-05-31 1979-12-12 Bruderhaus Maschinen Gmbh Apparatus for flattening the surface of a paper web

Family Cites Families (14)

* 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
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
DE1652322A1 (de) * 1967-07-22 1971-02-25 Feldmuehle Ag Verfahren und Vorrichtung zum UEberziehen eines Flaechengebildes,insbesondere einer Papierbahn mit Streichmasse
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
DE2455449A1 (de) * 1973-11-22 1975-05-28 Quay Dynamics Ltd Verfahren und einrichtung zur selbsttaetig regelbaren einstellung von walzbandstaerken in bandwalzwerken
CH604940A5 (fr) * 1975-12-08 1978-09-15 Escher Wyss Ag
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
DE2738781A1 (de) * 1977-08-27 1979-03-08 Ema Elektronik Maschinen Appar Walzenpresse, insbesondere fuer die papierfabrikation
CH626273A5 (fr) * 1978-04-18 1981-11-13 Escher Wyss Ag
JPS5557097A (en) * 1978-10-16 1980-04-26 Kleinewefers Gmbh Method and apparatus for rapidly separating calender roll

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2022163A (en) * 1978-05-31 1979-12-12 Bruderhaus Maschinen Gmbh Apparatus for flattening the surface of a paper web

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Research Disclosure, Nr. 142, Februar 1976, seite 12, Nr. 14208 Ausgeg. durch Industrial Opportunities Ltd., G.B. "Hydraulic rolling mills" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5975976A (en) * 1995-12-22 1999-11-02 Alusuisse Technology & Management Ltd. Method of making structured surface with peak-shaped elements

Also Published As

Publication number Publication date
EP0035110B1 (fr) 1985-04-10
FI69595C (fi) 1987-06-30
YU18981A (en) 1983-12-31
US4380954A (en) 1983-04-26
DE3007452C2 (de) 1984-09-20
DE3007452A1 (de) 1981-09-03
JPS56136320A (en) 1981-10-24
FI69595B (fi) 1985-11-29
FI810466L (fi) 1981-08-29
ATE12667T1 (de) 1985-04-15
JPS5930837B2 (ja) 1984-07-28
YU43486B (en) 1989-08-31

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