EP1857587A1 - Procédé de fabrication d'un corps creux d'une machine destinée à la fabrication et/ou l'amélioration d'une bande de matériau et d'un corps creux - Google Patents

Procédé de fabrication d'un corps creux d'une machine destinée à la fabrication et/ou l'amélioration d'une bande de matériau et d'un corps creux Download PDF

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Publication number
EP1857587A1
EP1857587A1 EP07103510A EP07103510A EP1857587A1 EP 1857587 A1 EP1857587 A1 EP 1857587A1 EP 07103510 A EP07103510 A EP 07103510A EP 07103510 A EP07103510 A EP 07103510A EP 1857587 A1 EP1857587 A1 EP 1857587A1
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EP
European Patent Office
Prior art keywords
hollow body
sheets
plate
longitudinal axis
welding
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
EP07103510A
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German (de)
English (en)
Other versions
EP1857587B1 (fr
Inventor
Hermann Albert Stitz
Josef Nelles
Alexander Klupp
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1857587A1 publication Critical patent/EP1857587A1/fr
Application granted granted Critical
Publication of EP1857587B1 publication Critical patent/EP1857587B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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

Definitions

  • the invention relates to a method for producing a hollow body of a machine for producing and / or finishing a material web, in particular a paper or board web, which extends at least over the width of the material web.
  • the invention relates to a hollow body of a machine for producing and / or finishing a material web, in particular a paper or board web, which extends at least over the width of the material web.
  • Such a hollow body in the embodiment of a traverse is for example from the German patent application DE 102 51 592 A1 known.
  • the horizontally and transversely to the web running direction and vertically movable traverse mounted on the underside of a continuous pressure roller is part of a pressure roller system.
  • such a hollow body is made of thick and welded together sheets, whereby it is generally very difficult, depending on the materials used and its size. Furthermore, it requires in its production a high material usage and sometimes very long and therefore also expensive processing times. In addition, it is due to the known high heat input due to the welding process used to a strong shrinkage and a large deformation of the individual components. Due to these strong deformations, each component must also have a correspondingly high Have machining allowance.
  • the invention is therefore based on the object, a method for producing a hollow body of the type mentioned in such a way that the mentioned disadvantages of the prior art are largely avoided.
  • the use of materials so the mass is reduced and the production time, in particular the welding time, the hollow body can be significantly reduced.
  • a corresponding hollow body to be specified.
  • This object is achieved in a method of the type mentioned in the present invention, that the hollow body of a plurality of sheets having a sheet thickness of less than 20 mm, in particular less than 12 mm, is produced, wherein the sheets of at least one plate-shaped material precisely cut out and then connected to each other, in particular welded.
  • the invention is thus characterized by the use of precisely cut sheets for the production of a hollow body, wherein due to the use of the corresponding sheets a significantly reduced production time, in particular welding time, is achieved.
  • a significantly reduced production time in particular welding time
  • the sheets of the hollow body due to the reduced heat input significantly smaller shrinkages and deformations.
  • the metal sheets forming the side walls of the hollow body are at least partially, preferably completely dovetailed with one another.
  • the required accuracy comes from the sheets and any necessary alignment work will be significantly reduced.
  • the hollow body is preferably provided with at least one partition plate, preferably provided with a plurality of bulkhead plates, which are connected to the side walls of the hollow body forming sheets.
  • the rigidity and the natural frequency of the hollow body are increased in the desired manner at the same time.
  • the partition plate is preferably tapped with the side walls, wherein it engages in corresponding openings of the side walls.
  • the pins mounted in the partition plate are shorter than the plate thickness, so that no abattyder supernatant immediately arises.
  • at least some of the pegs of a respective bulkhead plate may be hole welded to the openings of the corresponding side wall, thereby achieving a desired low heat input during welding.
  • a plurality of bulkhead plates are arranged perpendicular or substantially perpendicular to the longitudinal axis of the hollow body at a mutual distance in the range of 500 to 1200 mm, preferably 650 to 900 mm.
  • the arrangement of bulkhead plates in this distance range provides the hollow body with the necessary rigidity for the operation of the machine, in particular with regard to its deflection and torsion.
  • a plurality of bulkhead plates are arranged at a respective angle to the longitudinal axis of the hollow body.
  • the partition plates can be arranged on a zig-zag line along the longitudinal axis of the hollow body and two adjacent bulkheads touch ("touching truss structure") or the bulkhead plates can be arranged on a zig-zag line along the longitudinal axis of the hollow body and two adjacent bulkheads have a mutual distance from each other ("spaced truss structure").
  • two adjacent sheets in particular side walls, additionally connected to one another, in particular with at least one corner plate, preferably a plurality of corner plates, in particular welded.
  • This in turn provides increased stiffness of the hollow body with only a slight increase in weight of the hollow body.
  • the hollow body can be mounted in the machine according to requirements, elements, in particular receptacles, are welded to it, at least on the front side. These elements can additionally be tapped with the hollow body.
  • the precise cutting out of the sheets from the at least one plate-shaped material takes place in a preferred embodiment by means of a thermal separation process, in particular laser cutting, or by means of a non-thermal separation process, in particular water jet cutting.
  • a thermal separation process in particular laser cutting
  • a non-thermal separation process in particular water jet cutting
  • Laser cutting is a thermal separation process for plate-shaped material (usually metal sheets, more rarely also wood panels and comparable materials) by means of a laser.
  • the process is used where complex contours and precise, fast processing (typically 10 m / min) are required.
  • laser cutting can be used economically even at very low batch sizes.
  • Focused high-power lasers are used, ie corresponding gas lasers (usually the CO 2 laser) or solid-state lasers.
  • fusion cutting where the cut seam is melted and blown out of the kerf with a gas jet
  • flame cutting where oxygen is used as the cutting gas to oxidize the eroding effect and thus the penetration depth of the cut increase.
  • Sublimation cutting is when the heated material does not melt but evaporates.
  • 3D CAD / CAM systems can be used for offline programming of complex 3D cutting contours.
  • the material to be processed is separated by a high-pressure water jet.
  • This jet has a pressure of up to 6,000 bar. Outlet speeds of up to 1,000 m / s are achieved.
  • the processing takes place almost without heating of the material to be cut.
  • the cutting water Due to the high pressure, the cutting water is germ-free (high-pressure sterilization).
  • the water does not need to be specially treated. Only to increase the pump life, a treatment may be necessary, for example, by water softening or reverse osmosis system. Due to the high exit velocity of the water, a sound pressure of up to 130 dB is produced during cutting. By cutting under water, for example by increasing the water level in the beam catcher, the sound emission can be significantly reduced.
  • abrasive cutting involves adding a cutting agent, a so-called abrasive, to the jet to increase cutting performance. Only by the addition of such an abrasive, such as garnet or corundum, it is possible to cut harder materials that are not separable with pure water jet
  • At least some of the sheets are preferably directed after the precise cutting out of the at least one plate-shaped material.
  • the direction can be done by means of well-known straightening devices.
  • the sheets after precise cutting out of the at least one sheet-shaped material, can be deformed, in particular bent when a bending moment is applied, and when a plastic and thus permanent deformation is brought about.
  • non-planar surfaces of the hollow body can be produced in a simple manner.
  • the welding of the sheets is preferably carried out by means of at least one welding robot. As a result, high accuracy and low production costs can be achieved.
  • a preferred welding method for the production of the hollow body is in particular a known method such as manual arc welding according to DIN EN ISO 4063: 2000-04, inert gas welding (SG) according to DIN ISO 857-1: 2002-11, metal inert gas welding (MSG) / (MIG / MAG) , Tungsten inert gas welding (TIG), TIG pulse welding or plasma welding (tungsten plasma welding) in question.
  • the welding can be done using heat and / or pressure - with or without welding consumables.
  • the welding work is preferably carried out according to EN 25817 - B.
  • the object of the invention is achieved in a hollow body of the type mentioned in that it was prepared using the method according to the invention.
  • the hollow body may be formed as a cross member, which finds its use in the field of a winding device.
  • a cross member which finds its use in the field of a winding device.
  • it can be, for example, a knife crosshead, a traverse of the cutting separation or a pressure roller traverse.
  • the pressure roller traverse including the pressure roller carried by it and other units carried by it, preferably has a weight of less than 600 kg / m, in particular of less than 550 kg / m, based on its length, and / or a mass of 9.25. Length 2.5 to, where mass is in kilograms and the length is in meters. Furthermore, the ratio between the height and the width of the pressure roller traverse is between 0.8 to 3 times the width.
  • the hollow body according to the invention can generally be a machine part in a paper or board machine, in a calender, in a reel, in a reel magazine with spool truck, in a splicing device, in a machine housing or in a packing installation.
  • Figures 1 to 6 each show a view or a representation of a hollow body 1 of a machine for producing and / or finishing a material web, not shown, in particular a paper or board web extending at least over the width of the material web, not shown, and often from a plurality of sheets 2 to 13, with a sheet thickness d of less than 20 mm, in particular less than 12 mm, was produced, wherein the sheets 2 to 13 cut out of at least one plate-shaped material precisely and then joined together, in particular welded.
  • the welds are shown only partially explicitly or symbolically indicated in Figures 1 to 6 for the purpose of better understanding.
  • a preferred welding method for the production of the hollow body 1 came in particular a known method such as manual arc welding according to DIN EN ISO 4063: 2000-04, inert gas welding (SG) according to DIN ISO 857-1: 2002-11, gas metal arc welding (MSG) / (MIG / MAG ), Tungsten inert gas welding (TIG), TIG pulse welding or plasma welding (tungsten plasma welding). Welding could be done using Heat and / or pressure - done with or without welding consumables. Furthermore, the welding work was preferably carried out in accordance with EN 25817-B and the welding of the sheets 2 to 13 was carried out by means of at least one welding robot known to the person skilled in the art.
  • the hollow body 1 shown in FIGS. 1 to 6 has, by way of example only, a quadrangular cross-sectional shape Q1 (FIGS. 1 to 3). Rather, the cross-sectional shape Q1 can assume any polygonal contour.
  • FIG. 1 now shows a perspective partial view of a hollow body 1, the sheets 2 to 5 of which form the side walls additionally being at least partially, preferably completely dovetailed with each other.
  • the hollow body 1 was further provided with at least one partition plate 6, preferably with a plurality of bulkhead plates 6, which were connected to the side walls forming sheets 2 to 5.
  • the respective partition plate 6 was tapped with the side walls 2 to 5, so that it engages in corresponding openings 14 of the side walls 2 to 5.
  • At least some of the pins 15 of the respective partition plate 6 were also hole-welded to the openings 14 of the corresponding side wall 2 to 5.
  • Figures 2 and 3 show two cross-sectional views of a hollow body 1, as it may be shown for example in the figure 1 at least partially.
  • a plurality of partition plates 6 have been arranged perpendicular or substantially perpendicular to the longitudinal axis L (arrow) of the hollow body 1 at a mutual distance A (arrow) in the range from 500 to 1200 mm, preferably from 650 to 900 mm.
  • the corners 16 of the partition plate 6 shown were removed accordingly and the individual bulkhead plate 6 may have a corresponding recess 18 in the central region 17 for the purpose of further weight reduction (dashed line).
  • the recess 18 can have any requirements fulfilling cross-sectional shape Q2.
  • two adjacent sheets 2, 3; 4, 5 of the side walls additionally connected to a plurality of corner plates 7 to 10, in particular welded.
  • two opposing corner plates 7, 8 can be arranged along the longitudinal axis L (arrow) of the hollow body 1 spatially offset from two other opposing corner plates 9, 10 (dashed line).
  • Figures 4 to 6 show three horizontal sectional views of a hollow body 1 with two sheets (side walls) 3, 5, as it may be at least partially shown for example in Figure 1.
  • a plurality of bulkhead plates 11 were arranged at a respective angle ⁇ to the longitudinal axis L (arrow) of the hollow body 1 and preferably connected circumferentially with the adjacent sheets 2 to 5 (see Figures 1 to 3), preferably welded.
  • the bulkhead plates 11 may be arranged overlapping or spaced in the direction of the longitudinal axis L (arrow) of the hollow body 1. In the present embodiment, they are spaced (distance B).
  • the bulkhead plates 12, 13 at an angle ⁇ on a zig-zag line 19 along the longitudinal axis L (arrow) of the hollow body 1 and preferably arranged circumferentially with the adjacent sheets 2 to 5 (see 1 to 3), preferably welded.
  • the zig-zag line 19 is limited in the embodiment of Figure 5 of the hollow body 1, so that two adjacent partition plates 12, 13 touch ("touching truss structure").
  • the zig-zag line 19 in the embodiment of FIG. 6 is not delimited by the hollow body 1, so that two adjacent partition plates 12, 13 have a mutual distance C from one another ("spaced framework structure").
  • the angle ⁇ in the embodiments of FIGS. 5 and 6 can basically assume any suitable value, in particular between 30 and 60 °.
  • the precise cutting out of the sheets 2 to 13 takes place from the at least one plate-shaped material by means of a thermal separation process, in particular laser cutting, or by means of a non-thermal separation process, in particular water jet cutting.
  • a thermal separation process in particular laser cutting
  • a non-thermal separation process in particular water jet cutting.
  • the hollow bodies 1, which are at least partially illustrated in FIGS. 1 to 6, can be designed as a cross-piece, which finds its use in the area of a winding device.
  • a cross-piece which finds its use in the area of a winding device.
  • it may be, for example, a knife traverse, a traverse of the cutting separation or a pressure roller traverse already described.
  • the hollow body 1, which is at least partially illustrated in FIGS. 1 to 6, may also generally be a machine part in a paper or board machine, in a calender, in a reel, in a reel magazine with a reel spool, in a splicing device, in a machine housing or in to be a packing plant.
  • Figures 7A to 7D, 8A to 8D, 9A to 9D and 10A to 10F show in respective Detail view X of preferred embodiments of the welding / joining of the partition plate 6 or of the pin 15 with the side wall 2 or the opening 14 shown in FIG. 1.
  • the remaining welds / joints can also be designed in this form.
  • Figures xA of Figures 7, 8 and 9 respectively show an unwelded state
  • Figures xB the corresponding welded state
  • Figures xC and xD the respective plan view of Figures xA and xB.
  • the pin 15 of the partition plate 6 is opposite the opening 14 of the side wall 2 back. This residue is hole-welded according to FIG. 7B with additional material 20.
  • the pin 15 of the partition plate 6 is largely flush with the opening 14 of the side wall 2.
  • the two parts 2, 6 are connected according to Figure 8B in the arc welding process without the addition of further weld metal.
  • the pin 15 of the partition plate 6 with the opening 14 of the side wall 2 in turn is largely flush.
  • the two parts 2, 6 are connected to a Y-seam 22 only in the preferably laser-cut chamfer 21 (FIG. 9A), whereby only a small heat input is necessary.
  • This method is particularly suitable for connections in which the weld is not loaded on train.
  • FIGS. 10A to 10C each show a design form of a joint 23 between the pin 15 of the partition plate 6 and the opening 14 of the side wall 2, wherein FIGS. 10D to 10F show an enlargement of the respective joint 23 of FIGS. 10A to 10C.
  • the pin 15 of the partition plate 6 is positioned by means of small lugs 24 mounted in the opening 14 of the side panel 2.
  • the pins 15 of the partition plates 6 are introduced with "play" into the openings 14 of the side walls 2, in the embodiment according to FIG. 10B lying on one side, ideally centered in the embodiment according to FIG. 10C.
EP20070103510 2006-05-20 2007-03-05 Procédé de fabrication d'un corps creux d'une machine destinée à la fabrication et/ou l'amélioration d'une bande de matériau et d'un corps creux Expired - Fee Related EP1857587B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610023834 DE102006023834A1 (de) 2006-05-20 2006-05-20 Verfahren zur Herstellung eines Hohlkörpers einer Maschine zur Herstellung und/oder Veredelung einer Materialbahn und Hohlkörper

Publications (2)

Publication Number Publication Date
EP1857587A1 true EP1857587A1 (fr) 2007-11-21
EP1857587B1 EP1857587B1 (fr) 2013-05-15

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EP20070103510 Expired - Fee Related EP1857587B1 (fr) 2006-05-20 2007-03-05 Procédé de fabrication d'un corps creux d'une machine destinée à la fabrication et/ou l'amélioration d'une bande de matériau et d'un corps creux

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EP (1) EP1857587B1 (fr)
DE (1) DE102006023834A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113510375A (zh) * 2021-04-13 2021-10-19 曹喜国 一种直角精制钢方通腔内卯榫结构加工方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021133018B3 (de) 2021-12-14 2022-07-14 Strothmann Machines & Handling GmbH Fertigungsverfahren einer Linearachse, Strukturelement und Strukturteil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251592A1 (de) 2002-11-06 2004-05-27 Voith Paper Patent Gmbh Tragwalzen-Wickelmaschine
WO2006010794A1 (fr) 2004-07-28 2006-02-02 Metso Paper, Inc. Structure de barre pour une machine a papier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251592A1 (de) 2002-11-06 2004-05-27 Voith Paper Patent Gmbh Tragwalzen-Wickelmaschine
WO2006010794A1 (fr) 2004-07-28 2006-02-02 Metso Paper, Inc. Structure de barre pour une machine a papier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113510375A (zh) * 2021-04-13 2021-10-19 曹喜国 一种直角精制钢方通腔内卯榫结构加工方法

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EP1857587B1 (fr) 2013-05-15
DE102006023834A1 (de) 2007-11-22

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