WO1999009245A1 - Procede de fabrication de pontuseaux pour machines a papier et agencement de ces pontuseaux - Google Patents

Procede de fabrication de pontuseaux pour machines a papier et agencement de ces pontuseaux Download PDF

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Publication number
WO1999009245A1
WO1999009245A1 PCT/FI1997/000478 FI9700478W WO9909245A1 WO 1999009245 A1 WO1999009245 A1 WO 1999009245A1 FI 9700478 W FI9700478 W FI 9700478W WO 9909245 A1 WO9909245 A1 WO 9909245A1
Authority
WO
WIPO (PCT)
Prior art keywords
mantle
end portion
fixative
tube roll
end portions
Prior art date
Application number
PCT/FI1997/000478
Other languages
English (en)
Inventor
Veli-Matti Vainio
Original Assignee
Valmet Corporation
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 Valmet Corporation filed Critical Valmet Corporation
Priority to PCT/FI1997/000478 priority Critical patent/WO1999009245A1/fr
Priority to AU38522/97A priority patent/AU3852297A/en
Publication of WO1999009245A1 publication Critical patent/WO1999009245A1/fr

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
    • 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

Definitions

  • the invention relates to a method of producing tube rolls for paper machines, wherein a mantle billet is made separately, the outer surface and at least the inner surfaces of the ends of which are processed essentially cylindrical so as to generate a mantle and, similarly, end portions that extend inside the mantle, when mounted, are made separately and inserted into the ends of the mantle so that fixing surfaces at the end portions extending inside the mantle are cylindrical and in contact with a corresponding inner surface at the mantle end, the mantle and the end portions together forming the tube roll.
  • the invention further relates to a tube roll arrangement for paper machines, comprising a mantle whose outer surface and inner surfaces of at least whose ends are processed cylindrical, and end portions extending into the mantle, fixing surfaces extending inside the mantle ends being cylindrical and in contact with a corresponding inner mantle surface, the mantle and the end portions together forming the tube roll.
  • tube rolls of different sizes for different purposes in paper machines, such as different kinds of paper machines, board machines, etc.
  • the diameters of such paper machine tube rolls may be between a few dozen centimetres and well over one metre.
  • the length of the rolls may be between a few metres and as much as 11 metres, and the weight between several hundreds of kilos and as much as 10,000 kg.
  • the typical dimensions of tube rolls are: diameter 40 to 120 cm, length 5 to 11 m, and weight about 1 ,000 to 10,000 kg.
  • the smallest paper machine tube rolls are massive, large, and difficult to handle. Additionally, they take up much space during production, and the time taken up by the currently used production technique is quite long.
  • the crimp connection causes the mantle surface at the ends of the finished roll to enlarge, and the surface of the roll has to be lathed again, and then balanced at the inner surface of the mantle e.g. via a hole at the ends.
  • Such an arrangement is very expensive and complex.
  • both the end portion and the mantle have to have surfaces lathed on them with such dimensions that it is possible to utilize the shrinkage caused by thermal expansion and cooling to achieve a sufficient compressive force to fasten the end portions to the mantle.
  • the problem is first of all that the tube has to be heated first, which is time-consuming.
  • cooling the mantle tube after the end portions have been fastened can take more than eight hours, during which time the unfinished roll obstructs normal production and requires much space. Further, the need to lathe the mantle so that it again becomes straight and the balancing of the roll are procedures that generate extra unnecessary costs.
  • Another drawback of prior art is that the heating and cooling of the mantle causes deformations that increase the need for finishing.
  • the method of the invention is characterized in that the inner surface of the mantle end and the fixing surface of the end portion are dimensioned so that they can be inserted one into the other at essentially the same temperature so that said surfaces are in contact with each other substantially around their peripheries, and that to secure the fastening, fixative is provided between the fixing surface of the end portion and the inner surface of the mantle for fastening the surfaces together.
  • the tube roll arrangement of the invention is characterized in that the inner surface at the mantle end and the fixing surface of the end portion are dimensioned so that the end portion can be inserted into the mantle when they are essentially of the same temperature without essential changes to the outer dimensions of the mantle so that said surfaces are in contact with each other substantially around their peripheries, and that fixative is provided between the surfaces of the mantle and the end portion.
  • the mantle and end portion of a paper machine tube roll are dimensioned so that they can be inserted coaxially into each other with reasonable force without essential change to the shape and outer measurements of the mantle, so that the cylindrical fixing surface of the end portion steadily rests against the inner surface of the mantle.
  • the joint between the man- tie and the end portion is made by using a separate fixative, provided between the surfaces of the mantle and the end portion in connection with the installation of the end portions either before the end portions are inserted into the mantle or thereafter, in order for it to fasten the joining surfaces firmly together. It is an advantage of the invention that the delay of several hours between the heating and cooling of the mantle can be totally eliminated during production. A further advantage is that after the end portions and the mantle have been joined together, no separate lathe work of the surface is needed, and the tube roll can be moved further immediately after the joint provided by the fixative is ready.
  • a further advantage is that both the mantle and the end portions can be completely balanced, and thus no further balancing is needed. Still another advantage is that if an end portion should have to be replaced or some other measures taken later, loosening the joint is significantly easier as the holding power of various glues can be eliminated by very slight heating and the melting of other fixatives that have been applied by heating, e.g. the melting of solders, does not require that the mantle and the end portion be heated to an elevated temperature.
  • FIG 1 schematically shows an embodiment of the invention
  • Figure 2 shows another embodiment of the invention
  • Figure 3 schematically shows a third embodiment of the invention.
  • Figure 1 schematically shows a paper machine tube roll and a section of one end thereof.
  • the tube roll is composed of a mantle 1 , at both ends of which an end portion 2 is mounted.
  • the mounting of paper machine rolls rotatably on the end portions is generally known in the art and can be performed in various manners known per se, and hence the details have been omitted herein for the sake of clarity.
  • the mantle 1 of the tube roll has been lathed from a mantle billet to its finished form and preferably also balanced during production.
  • the inner surface may remain as a surface formed e.g. in connection with the manufacture of the mantle blank except for possible machining or increases in weights needed for possible balancing.
  • a cylindrical inner surface 3 has been lathed to the mantle ends forming a fixing surface for the end portion 2.
  • the inner surface 3 As a continuation to the inner surface 3 there is a conical bevel 4 extending preferably from the inner surface towards the middle of the mantle and transferring the load resting on the mantle smoothly from the lathed thinner portion at the mantle end to its thicker portion. Furthermore, the edge 5 of the mantle is radially lathed such that it is even and symmetric in relation to the centre axis of the outer surface of the mantle 1.
  • the outer surface of the end portion 2 is essentially cylindrical, and its fixing surface 6, i.e.
  • the end portion 2 is lathed completely finished during production and preferably bal- anced so that when the end portion 2 and the mantle 1 have been matched together, the whole structure formed by them, i.e. the paper machine tube roll, is still in balance.
  • fixative 8 has been provided between the fixing surface 6 of the end portion 2 and the inner surface 3 of the mantle 1 , the fixative preferably having been spread on the entire contact surface between the mantle 1 and the end portion 2 and forming an adequately extensive load durable joint.
  • fixative 8 may be used various industrial glues which reliably and adequately rapidly solidify so as to form said joint.
  • this kind of glue type could be men- tioned various cyanoacrylates generally used in industry. This glue may be applied e.g. to the fixing surface 6 of the end portion 2 before it is inserted into the mantle 1.
  • an alternative is to apply the glue after the end portion is inserted into position, whereby either the outer surface of the end portion 2 and/or the inner surface of the mantle 1 may comprise small grooves to facilitate a better spreading of the glue.
  • various solders may be used as fixative 8; they act in a capillary manner and easily spread even in a narrow slot. The solder may even be applied beforehand to the outer surface of the end portion 2 or the inner surface of the mantle 1 end, and heating can be employed to make the solder fasten to both surfaces once the end portion 2 has been inserted into the mantle 1.
  • the use of warmed up solders requires a significantly lower roll temperature than the use of the known crimp connection, and consequently the roll can be subjected to further processing quite rapidly.
  • Figure 2 shows an embodiment corresponding to that of Figure 1 , except for a different structure of the end portion 2.
  • the same numbering as in Figure 1 is used for the corresponding parts in Figure 2, and thus the details will not be described unless necessary.
  • the end portion 2 in Figure 2 has an axial cylindrical flange 9 extending therefrom to the end of the roll mantle 1 , the fixing surface 6 of the end portion 2 extending over the flange 9.
  • the flange 9 further comprises a border 10 extending over the mantle 1 edge 5 in its radial direction.
  • the inner edge 11 of the border 10 is lathed such that the inner edge 11 of the border 10 rests tightly against the edge 5 of the mantle 1 when the end portion 2 has been pressed into the right position within the mantle 1.
  • Figure 3 shows a tube roll implemented as the one in Figure 1 , and the same numbering is used for the same parts which will not be described unless necessary.
  • a counter shoulder 12 has been lathed to the roll mantle 1 of Figure 3.
  • the end portion 2 is inserted into the mantle 1 to the extent that it rests against the counter shoulder 12 and settles thus in the right position in relation to the mantle 1.
  • fixative is provided between the mantle ends and, similarly, the fixing surfaces of the end portions, the fixative fixing them reliably and firmly one to another keeping them secured during normal operation of a paper machine tube roll.
  • the joint may be made by using various fixatives to join the inner surface of the mantle 1 to the outer surface of the end portion 2 sufficiently tightly.
  • shape of the end portion may vary widely, the es- sential thing being that is comprises a fixing surface on its periphery that can be inserted into the mantle 1 and be in contact with the inner surface of the end of the mantle 1 , so that fixative may be provided between the surfaces to lock the end portion in position. It is naturally obvious that in addition to fastening an end portion, the same principle can be applied to fixing an axle to the end portion.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un pontuseau pour machines à papier et l'agencement de ces pontuseaux. Dans ce procédé, l'extrémité du manchon (1) du pontuseau comprend une surface interne cylindrique régulière, et la périphérie d'une partie d'extrémité (2) comporte une surface de fixation cylindrique, ces surfaces (3, 6) étant dimensionnées de sorte que la partie d'extrémité (2) peut être introduite dans l'extrémité du manchon (1). Pour bloquer la partie d'extrémité (2) dans le manchon, une fixation est placée entre les surfaces (3, 6). Dans l'agencement de pontuseau, la surface cylindrique (3) interne du manchon (1) et la surface de fixation (6) sur la périphérie de la partie d'extrémité (2) sont dimensionnées de sorte qu'elles peuvent être introduites l'une dans l'autre et venir en contact l'une avec l'autre. L'agencement de pontuseau comprend, en outre, une fixation placée entre les surfaces (3, 6) de la partie d'extrémité (2) et du manchon (1).
PCT/FI1997/000478 1997-08-15 1997-08-15 Procede de fabrication de pontuseaux pour machines a papier et agencement de ces pontuseaux WO1999009245A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/FI1997/000478 WO1999009245A1 (fr) 1997-08-15 1997-08-15 Procede de fabrication de pontuseaux pour machines a papier et agencement de ces pontuseaux
AU38522/97A AU3852297A (en) 1997-08-15 1997-08-15 Method of producing tube rolls for paper machines, and tube roll arrangement forpaper machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI1997/000478 WO1999009245A1 (fr) 1997-08-15 1997-08-15 Procede de fabrication de pontuseaux pour machines a papier et agencement de ces pontuseaux

Publications (1)

Publication Number Publication Date
WO1999009245A1 true WO1999009245A1 (fr) 1999-02-25

Family

ID=8556687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1997/000478 WO1999009245A1 (fr) 1997-08-15 1997-08-15 Procede de fabrication de pontuseaux pour machines a papier et agencement de ces pontuseaux

Country Status (2)

Country Link
AU (1) AU3852297A (fr)
WO (1) WO1999009245A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144268A1 (de) * 1980-12-18 1982-10-21 Veb Kombinat Nagema, Ddr 8045 Dresden Hohlwalze fuer reibwalzwerke

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144268A1 (de) * 1980-12-18 1982-10-21 Veb Kombinat Nagema, Ddr 8045 Dresden Hohlwalze fuer reibwalzwerke

Also Published As

Publication number Publication date
AU3852297A (en) 1999-03-08

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