EP1774186A1 - Bendable cylinder - Google Patents

Bendable cylinder

Info

Publication number
EP1774186A1
EP1774186A1 EP05761812A EP05761812A EP1774186A1 EP 1774186 A1 EP1774186 A1 EP 1774186A1 EP 05761812 A EP05761812 A EP 05761812A EP 05761812 A EP05761812 A EP 05761812A EP 1774186 A1 EP1774186 A1 EP 1774186A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
jacket
shaft
bearings
bendabie
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.)
Withdrawn
Application number
EP05761812A
Other languages
German (de)
French (fr)
Inventor
Pasi Uusitalo
Tuomo Mantovaara
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.)
PR Rolls Oy
Original Assignee
PR Rolls Oy
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
Application filed by PR Rolls Oy filed Critical PR Rolls Oy
Publication of EP1774186A1 publication Critical patent/EP1774186A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
    • F16C13/024—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B65H23/0258—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a bowed axis
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms
    • D21F1/40—Rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/137—Means for varying longitudinal profiles
    • B65H2404/1371—Means for bending, e.g. for controlled deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/17—Details of bearings
    • B65H2404/172—Details of bearings tilting

Definitions

  • the present invention relates to a bendable cylinder, especially a spreader for the spreading of a web-like material, said cylinder comprising a continuos tube-like cylinder jacket of composite material and a fixed axle part on which the cylinder jacket is mounted with bearings, and which cylinder addition ⁇ ally comprises a bending mechanism for bending the cylinder jacket.
  • Bendable composite cylinders with a jacket of composite material are used especially as spreaders in paper and cardboard machines.
  • a compos ⁇ ite cylinder has advantageous material properties, in particular coefficient of elasticity and density, and thus it can be so dimensioned as to make it relatively easily bendable to a desired curvature.
  • FI-B-103 071 discloses a bendable cylinder for web- like material, comprising a tube-like cylinder jacket of composite material and fixed, i.e. non-rotating spindles attached to either end of the cylinder jacket.
  • the spindles are fastened via two supporting points to a fastening flange structure fixed to the machine frame.
  • the cylinder additionally comprises a bending mechanism placed outside the cylinder jacket and used to bend the spindles and the cylinder jacket to an arched shape, and a control device allowing the angular position of the cylinder arc to be adjusted.
  • a drawback with the solution according to this specification is rela ⁇ tively complicated structure and installation. In addition, it takes up a relatively large space at the side of the cylinder jacket. Moreover, in prior-art solutions, implementing the suspension with bearings between the spindle and the cylin- der jacket is a complicated and difficult task especially in respect of installation.
  • the object of the present invention is to overcome the drawbacks of prior art and to achieve a completely new type of composite cylinder construc ⁇ tion.
  • both bearings are fitted in a protective sleeve provided inside the cylinder jacket, thus producing a very compact and simple bending system. It can be easily mounted as a unitary module inside the cylinder jacket.
  • Fig. 1 presents a composite cylinder according to the invention
  • Fig. 2 presents a second composite cylinder according to the inven ⁇ tion
  • Fig. 3 presents a third composite cylinder according to the inven ⁇ tion.
  • Fig. 1 presents a cross-sectional side view of an end part of the composite cylinder, which comprises a continuos cylinder jacket 1 of composite material and inside it a central shaft 2 going through the cylinder jacket and hav ⁇ ing a thicker middle portion 21 and thinner end portions 22 (inner) and 23 (outer).
  • a protective sleeve 30 (outer bushing) fitted nearly completely inside the cylinder jacket, said sleeve being fixedly fitted inside and at the end of the cylinder jacket 1.
  • bearings 31 and 32 Fitted inside the protective sleeve 30 at either end of it are bearings 31 and 32 and inside these a bushing or ferrule 33 (inner bushing) fitted nearly completely in ⁇ side the cylinder jacket.
  • the cylinder is provided with a bending mechanism arranged in the bushing 33 for bending the bushing 33 and the cyl- inder jacket 1 and for adjusting the bending action.
  • the outer end of the bushing 33 is provided with an adjusting screw 5 connected by threads 4 to the end of the shaft portion.
  • the inner end of the bushing 33 is pivotally connected by a ball bearing 6 to shaft portion 22.
  • the bending (magnitude of curvature) of the cylinder is adjusted by turning the adjusting screw 5, thereby changing the angular position between shaft portion 22 and the bushing 33, and as the motion of the bushing 33 is transmitted via the bear- ings 31 , 32 to the jacket part 1 , the angular position between the jacket 1 and shaft portion 2 is changed at the same time.
  • the other inner bearing 31 is also ar ⁇ ranged between the sleeve and the cylinder jacket near the inner edge of shaft portion 22 in a position aligned with the ball bearing 6, the entire bearing and bending system thus forming a single unitary module 3, which can be mounted inside the cylinder jacket.
  • the cylinder comprises a worm gear 7 provided with a rocker bearing, mounted at the end of the shaft, allowing the direction of the arc to be turned.
  • the bending forces are received by the shaft.
  • the other end part is identical except that axial forces in the bearing arrange ⁇ ment are released in the structure in question.
  • Figures 2 and 3 present other bendable cylinders according to the invention, of which the cylinder in Fig. 2 also has a shaft going through it and a worm gear 8 its end, whereas the cylinder in Fig. 3 is provided with spindles 9 having a thicker inner portion 92 and a thinner outer portion 93 and additionally a worm gear 10 at the end.
  • the bending forces are completely transmitted to the frame, and in Fig. 2 they are divided between the shaft and the frame.

Abstract

A bendable cylinder (1, 2), especially a spreader for spreading a web-like material, said cylinder comprising a continuos tubular cylinder jacket (1) of composite material and a fixed shaft part (2) on which the cylinder jacket is rotatably mounted with at least two bearings (31, 32) at either end, and said cylinder additionally comprising a bending mechanism provided at either end of the cylinder jacket and comprising an adjusting part (5), such as an adjusting screw, for bending the cylinder jacket, which cylinder has an inner bushing part (33) fitted at least partially inside the cylinder at either end of it, the bending mechanism being fitted in said bushing part, so that, to bend and adjust the cylinder jacket (1), the angular position between a shaft portion (22) and the bushing part (33) is changed, and the bearings (31 , 32) at either end are fitted between the inner bushing part (3) and an outer bushing part (30) fixedly arranged inside the cylinder jacket, and the inner and outer bushing parts, the bending mechanism and the bearings form a module (3) that can be mounted as a single unit.

Description

BENDABLE CYLINDER
Field of the invention
The present invention relates to a bendable cylinder, especially a spreader for the spreading of a web-like material, said cylinder comprising a continuos tube-like cylinder jacket of composite material and a fixed axle part on which the cylinder jacket is mounted with bearings, and which cylinder addition¬ ally comprises a bending mechanism for bending the cylinder jacket. Bendable composite cylinders with a jacket of composite material are used especially as spreaders in paper and cardboard machines. A compos¬ ite cylinder has advantageous material properties, in particular coefficient of elasticity and density, and thus it can be so dimensioned as to make it relatively easily bendable to a desired curvature.
Prior art
Specification FI-B-103 071 discloses a bendable cylinder for web- like material, comprising a tube-like cylinder jacket of composite material and fixed, i.e. non-rotating spindles attached to either end of the cylinder jacket. The spindles are fastened via two supporting points to a fastening flange structure fixed to the machine frame. The cylinder additionally comprises a bending mechanism placed outside the cylinder jacket and used to bend the spindles and the cylinder jacket to an arched shape, and a control device allowing the angular position of the cylinder arc to be adjusted.
A drawback with the solution according to this specification is rela¬ tively complicated structure and installation. In addition, it takes up a relatively large space at the side of the cylinder jacket. Moreover, in prior-art solutions, implementing the suspension with bearings between the spindle and the cylin- der jacket is a complicated and difficult task especially in respect of installation.
Brief description of the invention
The object of the present invention is to overcome the drawbacks of prior art and to achieve a completely new type of composite cylinder construc¬ tion. In the construction of the invention, both bearings are fitted in a protective sleeve provided inside the cylinder jacket, thus producing a very compact and simple bending system. It can be easily mounted as a unitary module inside the cylinder jacket.
The features of the solution of the invention are presented in detail in the claims below.
Brief description of the drawings
In the following, the invention will be described in detail with refer¬ ence to an example and the attached drawing, wherein Fig. 1 presents a composite cylinder according to the invention,
Fig. 2 presents a second composite cylinder according to the inven¬ tion, and
Fig. 3 presents a third composite cylinder according to the inven¬ tion.
Detailed description of preferred embodiments
Fig. 1 presents a cross-sectional side view of an end part of the composite cylinder, which comprises a continuos cylinder jacket 1 of composite material and inside it a central shaft 2 going through the cylinder jacket and hav¬ ing a thicker middle portion 21 and thinner end portions 22 (inner) and 23 (outer).
Between the inner shaft portion 22 and the jacket 1 is a protective sleeve 30 (outer bushing) fitted nearly completely inside the cylinder jacket, said sleeve being fixedly fitted inside and at the end of the cylinder jacket 1. Fitted inside the protective sleeve 30 at either end of it are bearings 31 and 32 and inside these a bushing or ferrule 33 (inner bushing) fitted nearly completely in¬ side the cylinder jacket. In addition, the cylinder is provided with a bending mechanism arranged in the bushing 33 for bending the bushing 33 and the cyl- inder jacket 1 and for adjusting the bending action. To this purpose the outer end of the bushing 33 is provided with an adjusting screw 5 connected by threads 4 to the end of the shaft portion. Moreover, the inner end of the bushing 33 is pivotally connected by a ball bearing 6 to shaft portion 22. The bending (magnitude of curvature) of the cylinder is adjusted by turning the adjusting screw 5, thereby changing the angular position between shaft portion 22 and the bushing 33, and as the motion of the bushing 33 is transmitted via the bear- ings 31 , 32 to the jacket part 1 , the angular position between the jacket 1 and shaft portion 2 is changed at the same time.
In the solution of the invention, the other inner bearing 31 is also ar¬ ranged between the sleeve and the cylinder jacket near the inner edge of shaft portion 22 in a position aligned with the ball bearing 6, the entire bearing and bending system thus forming a single unitary module 3, which can be mounted inside the cylinder jacket.
In addition, the cylinder comprises a worm gear 7 provided with a rocker bearing, mounted at the end of the shaft, allowing the direction of the arc to be turned. In Fig. 1 , the bending forces are received by the shaft. In principle, the other end part is identical except that axial forces in the bearing arrange¬ ment are released in the structure in question.
Figures 2 and 3 present other bendable cylinders according to the invention, of which the cylinder in Fig. 2 also has a shaft going through it and a worm gear 8 its end, whereas the cylinder in Fig. 3 is provided with spindles 9 having a thicker inner portion 92 and a thinner outer portion 93 and additionally a worm gear 10 at the end. In the solution in Fig. 3, the bending forces are completely transmitted to the frame, and in Fig. 2 they are divided between the shaft and the frame. It is obvious to the person skilled in the art that different embodi¬ ments of the invention are not limited to the example described above, but that they may be varied within the scope of the claims presented below.

Claims

1 . A bendabie cylinder (1 ,2), especially a spreader for spreading a web-like material, said cylinder comprising a continuos tubular cylinder jacket (1 ) of composite material and a fixed shaft part (2) on which the cylinder jacket is ro- tatably mounted with at least two bearings (31 , 32) at either end, and said cylinder additionally comprising a bending mechanism pro¬ vided at either end of the cylinder jacket and comprising an adjusting part (5), such as an adjusting screw, for bending the cylinder jacket, c h a r a c t e r i z e d in that the cylinder has an inner bushing part (33) fitted at least partially in¬ side the cylinder at either end of it, the bending mechanism being fitted in said bushing part, so that, to bend and adjust the cylinder jacket (1 ), the angular po- sition between a shaft portion (22) and the bushing part (33) is changed, and the bearings (31 , 32) at either end are fitted between the inner bushing part (3) and an outer bushing part (30) fixedly arranged inside the cyl¬ inder jacket, and the inner and outer bushing parts, the bending mechanism and the bearings form a module (3) that can be mounted as a single unit.
2. A bendabie cylinder according to claim 1 , characterized in that the inner end of the inner bushing part (33) is pivotally mounted via a ball bear¬ ing (6) or equivalent on the shaft portion (22).
3. A bendabie cylinder according to claim 1 , characterized in that the inner bearing (31 ) is arranged to be in alignment with the ball bearing at the inner end of the shaft part.
4. A bendabie cylinder according to claim 1 , characterized in that the shaft goes through the jacket and the shaft portion is an end portion (22, 23) of the shaft.
5. A bendabie cylinder according to claim 1 , characterized in that the shaft portion is a shaft journal (92, 93).
6. A bendabie cylinder according to claim 1 , characterized in that the modules are substantially identical at both ends, except that axial forces in the bearings are released in the structure at one end.
EP05761812A 2004-07-13 2005-07-01 Bendable cylinder Withdrawn EP1774186A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20040977A FI116745B (en) 2004-07-13 2004-07-13 Bending roll
PCT/FI2005/000308 WO2006005792A1 (en) 2004-07-13 2005-07-01 Bendable cylinder

Publications (1)

Publication Number Publication Date
EP1774186A1 true EP1774186A1 (en) 2007-04-18

Family

ID=32749196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05761812A Withdrawn EP1774186A1 (en) 2004-07-13 2005-07-01 Bendable cylinder

Country Status (8)

Country Link
US (1) US20070293381A1 (en)
EP (1) EP1774186A1 (en)
JP (1) JP2008506914A (en)
CN (1) CN101040124A (en)
CA (1) CA2573218A1 (en)
FI (1) FI116745B (en)
WO (1) WO2006005792A1 (en)
ZA (1) ZA200701220B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120149541A1 (en) * 2010-12-10 2012-06-14 Moschel Charles C Bowed Industrial Roll With High Strength Bearing For End Spool

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH648238A5 (en) * 1979-10-09 1985-03-15 Roland Man Druckmasch DEVICE FOR BOWING A PRINT ROLL OF A ROTATION PRINTING MACHINE.
FI811720A0 (en) * 1981-06-03 1981-06-03 Waertsilae Oy Ab VALSKONSTRUKTION
FI66471C (en) * 1981-06-03 1984-10-10 Waertsilae Oy Ab VALSKONSTRUKTION
DE4107440C2 (en) * 1991-03-08 1993-12-02 Kleinewefers Gmbh Deflection-controllable and heated roller
FI108555B (en) * 1996-09-19 2002-02-15 Metso Paper Inc Roll which directs the course of a movable web
FI2788U1 (en) * 1996-11-04 1997-03-10 Valmet Corp Removal roller, width stretch roller or equivalent for web material
FI103071B1 (en) * 1997-08-19 1999-04-15 Valmet Corp Bendable roller for web material
DE19823407C1 (en) * 1998-05-26 1999-07-29 Voith Sulzer Papiertech Patent Mounting of swimming roll which runs on individually adjustable hydrostatic bearings across its width for deflection control
US6315703B1 (en) * 1999-05-07 2001-11-13 Kleinewefers Textilmaschinen Gmbh Pressure treatment roller
FI106741B (en) * 2000-03-16 2001-03-30 Metso Paper Inc Bendable roller with composite mantle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006005792A1 *

Also Published As

Publication number Publication date
US20070293381A1 (en) 2007-12-20
ZA200701220B (en) 2008-09-25
FI116745B (en) 2006-02-15
JP2008506914A (en) 2008-03-06
WO2006005792A1 (en) 2006-01-19
FI20040977A0 (en) 2004-07-13
CA2573218A1 (en) 2006-01-19
WO2006005792A8 (en) 2006-04-13
CN101040124A (en) 2007-09-19

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