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EP0017145B1 - Verfahren zum Herstellen von gewickelten, oberflächenbeschichteten Rohren und Vorrichtung zur Durchführung dieses Verfahrens - Google Patents

Verfahren zum Herstellen von gewickelten, oberflächenbeschichteten Rohren und Vorrichtung zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0017145B1
EP0017145B1 EP80101577A EP80101577A EP0017145B1 EP 0017145 B1 EP0017145 B1 EP 0017145B1 EP 80101577 A EP80101577 A EP 80101577A EP 80101577 A EP80101577 A EP 80101577A EP 0017145 B1 EP0017145 B1 EP 0017145B1
Authority
EP
European Patent Office
Prior art keywords
synthetic resin
layer
tube
winding
metal strip
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
EP80101577A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0017145A1 (de
Inventor
Alfred Morhard
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT80101577T priority Critical patent/ATE2199T1/de
Publication of EP0017145A1 publication Critical patent/EP0017145A1/de
Application granted granted Critical
Publication of EP0017145B1 publication Critical patent/EP0017145B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/123—Making tubes or metal hoses with helically arranged seams of coated strip material; Making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • Y10T29/49382—Helically finned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/4984—Retaining clearance for motion between assembled parts
    • Y10T29/49842—Between tube-forming helical coils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49881—Assembling or joining of separate helix [e.g., screw thread]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating

Definitions

  • the invention relates to a method for the production of multilayered tubes, which are wound from at least two metal strips, one metal strip layer being wound spirally to joint and each further metal strip layer being offset in relation to the preceding one in the axial direction and intermediate material being introduced between the individual metal strip layers during the winding process.
  • the invention relates to a device for carrying out this method with an outer shape which causes the tube to be advanced and rotated during winding.
  • band iron is wrapped around a core tube for the production of pipes and, inter alia, means are introduced between the individual layers of the wrapping during winding, with the aid of which the metal strip layers are welded to one another or can be soldered, whereby the pipe is to be sealed.
  • silicone oil is usually used as a lubricant.
  • synthetic resins are particularly suitable because of the above-mentioned requirements with regard to tightness, food safety and chemical resistance. However, these have the property that they only adhere to absolutely clean material. It is therefore essential that the surfaces of the pipe, which are inevitably soiled for the reasons mentioned, are thoroughly cleaned after winding.
  • the tubes can only be cleaned after winding, an expensive and time-consuming sandblasting process is required.
  • US-A-2 998 339 relates to a method for producing pipes from metal strips.
  • the inside of the pipes should be highly corrosion-resistant.
  • the tapes are wound spirally on a mandrel, with at least the innermost and outermost tapes being wound in an overlapping position.
  • the three tapes to be wound are pulled off supply rolls and wound onto the mandrel by a winding tool; the winding tool consists of a winding tape, which is guided over a drive roller and a deflection roller and presses the tapes firmly against the mandrel. While the three tapes are being pulled off the supply rolls, the innermost tape is coated on one side, the middle tape on both sides and the outer tape on one side with adhesive.
  • the invention is based on the object of designing a method and a device for producing multilayer pipes of at least two metal strips of the type described at the outset in such a way that there is a continuous, smooth and corrosion-resistant surface coating on both sides of the pipe without the feed movement of the tube is complicated by a winding device during the winding process.
  • this object is achieved in that the metal strips are pre-bent in their circular arc shape in the heated state, that a coherent synthetic resin layer is created during the winding process between the inner metal strip layer and the outer layer of metal strip, that a synthetic resin layer is applied to the inner surface of the tube is, a first activation already takes place during the creation of the synthetic resin layers, while the outer surface of the tube is only then provided with a synthetic resin layer, whereupon all synthetic resin layers are finally activated.
  • the advantage of such a method is that light, dense and surface-coated tubes, which are wound from metal strips, can be produced in a single operation. With this method, the strips can be continuously sandblasted in a simple manner before winding, so that the expensive and time-consuming process of sandblasting on the tube is eliminated and a drastic reduction in production costs and an enormously increased output are achieved.
  • heated metal strips which are already pre-bent by means of bending rollers, are wound in an abutting manner and offset in relation to one another in multiple layers.
  • bending rollers they ideally have already have the degree of curvature which corresponds to the desired curvature of the pipe.
  • a coherent synthetic resin layer is sprayed between the inner layer of metal strip and the outer layer of metal strip.
  • a synthetic resin layer is also finished with a synthetic resin layer.
  • the intermediate synthetic resin layer is intended to bond the metal strip layers to one another, but the required molecular crosslinking of the synthetic resin is an endothermic process, heat is already applied at this point in the process for a first activation of the synthetic resin. Only then is the outer surface of the tube sprayed with a synthetic resin and the tube, which is now completely surface-finished, is then immediately subjected to a final curing of all synthetic resin layers.
  • the synthetic resin layers on the inside and on the outside of the tube create a smooth surface that is chemical-resistant and food-safe; Resin lacquers and in particular powder lacquers are particularly suitable for this.
  • the metal strips can be wound in the outer shape, the strips then not carrying out any movement relative to the outer shape. Rather, the metal strips are wound ever further into the axial direction by the rotational movement and the simultaneous movement of the outer shape.
  • lubricants that would contaminate the surface of the pipe are unnecessary. This eliminates the need to clean the pipe.
  • the tube is transported through the shape by the rotation of the outer shape and the movement of the endless belts and released again at the end thereof. Since no lubricants are necessary, an intermediate and surface coating with synthetic resin can be carried out simultaneously with the winding.
  • the sectors of the endless belts are designed as permanent magnets. This has the advantage that even the smallest relative movement is prevented during the winding and the first curing of the synthetic resin.
  • the spray device for the coating powder for spraying the synthetic resin intermediate layer between the metal strips to be wound is located directly at the front opening of the outer mold, as is the spray device with which the inner surface of the wound tube is coated. Since the spraying of the outer surface of the tube is carried out immediately after leaving the outer mold, it is expedient to mount the spray device provided for this purpose directly on the outlet opening of the outer mold. After a certain cross-linking and calming stretch, the metal strip strips, which are spirally offset with respect to one another, are absolutely firmly and tightly connected to one another.
  • At least one bayonet opening is milled into the pipe ends with the aid of a milling device immediately following the outer shape, which will later be needed to connect the ends of two pipes to one another during installation.
  • the outer wall of the tube is sprayed using the spray device arranged downstream of the milling device.
  • the cut edges of the milling opening are also coated. It can thus be glued together with synthetic resin in a continuous, rapid working process using the devices described in the arrangement mentioned, spirally and in multiple layers offset against one another and, provided with bayonet openings, be surface-coated with synthetic resin.
  • a cross section through an outer shape for the production of multilayer pipes is shown schematically.
  • Rollers 4 are mounted in a rectangular housing 1 at the points of contact of the rectangular housing with the outer wall 3 of a cylindrical outer shape.
  • the cylindrical outer shape 2 consists of four sectors 5 of the same size, which are connected to one another by connecting pieces 6 in such a way that the distances between the sectors are each the same.
  • the gaps between the sectors 5 are filled by four endless belts 7, which are arranged such that the edges 8 of one endless belt 7 are in contact with the adjacent edges of two other endless belts 7.
  • Fig. 2 shows an enlarged section of an endless belt 7. This consists of individual links 10, which are designed as permanent magnets. Each endless belt 7 is moved and deflected by means of a reversing roller 11.
  • the cylindrical outer shape 2 mounted in the rectangular housing 1 is rotated about its own axis by a simultaneous and simultaneous rotation of the rollers 4.
  • the four endless belts 7 are set in motion such that the cylinder wall formed by the four endless belts 7 moves uniformly in the axial direction.
  • the outer shape 2 is preceded by a bending device. 'In this bending device, the supplied thereto and heated metal strips are pre-bent so that its curvature corresponds to the outer shape. 2
  • the metal strips pre-bent in this way are fed to the cylindrical hollow mold, which is formed by the inner sides 9 of the endless belts 7, and inserted into the opening of the outer mold 2, which is moved both axially and in the circumferential direction. At least two metal tapes are wound butt-to-butt and offset with respect to one another, the spiral winding being effected by the rotation of the outer shape 2 and the transport of the wound tube through the outer shape by means of the continuous endless tapes 7.
  • the intermediate layer which is intended to glue the two metal strip layers to one another, and the coating of the inner surface of the tube being formed are subjected to a first curing of the synthetic resin by the immediate application of heat already during the winding process.
  • the wound, glued and resin-coated tube on its inner surface leaves the outer shape 2 at its end due to the superimposed movement (axially and in the circumferential direction).
  • the outer surface of the finished pipe can now be immediately coated with synthetic resin with the aid of a spray device arranged in the vicinity of the rear opening of the outer mold 2.
  • the pins 14 and 14 'located on the inside of the connecting sleeve 15 are inserted into the two opposite openings 13 and 13' and brought into their end position by rotating the connecting sleeve 15 in the manner of a bayonet lock.
  • This method of connecting two pipe ends when laying the pipes ensures that even at the seams of the pipes produced with the device explained above, their favorable properties, namely chemical resistance and tightness, are not lost. This is especially not the case, since the spraying of the outer surface of the finished tube only takes place after the bayonet catch has been milled, so that the cut edges are also surface-coated.
  • the connecting sleeve 15 can also be surface-coated in a separate operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Moulding By Coating Moulds (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP80101577A 1979-03-28 1980-03-25 Verfahren zum Herstellen von gewickelten, oberflächenbeschichteten Rohren und Vorrichtung zur Durchführung dieses Verfahrens Expired EP0017145B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101577T ATE2199T1 (de) 1979-03-28 1980-03-25 Verfahren zum herstellen von gewickelten, oberflaechenbeschichteten rohren und vorrichtung zur durchfuehrung dieses verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2912308 1979-03-28
DE2912308A DE2912308C2 (de) 1979-03-28 1979-03-28 Verfahren zum Herstellen von gewickelten, oberflächen beschichteten Rohren und Vorrichtung zur Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
EP0017145A1 EP0017145A1 (de) 1980-10-15
EP0017145B1 true EP0017145B1 (de) 1983-01-12

Family

ID=6066714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101577A Expired EP0017145B1 (de) 1979-03-28 1980-03-25 Verfahren zum Herstellen von gewickelten, oberflächenbeschichteten Rohren und Vorrichtung zur Durchführung dieses Verfahrens

Country Status (9)

Country Link
US (1) US4387498A (ru)
EP (1) EP0017145B1 (ru)
JP (1) JPS55133817A (ru)
AT (1) ATE2199T1 (ru)
AU (1) AU534201B2 (ru)
BR (1) BR8001872A (ru)
CA (1) CA1158535A (ru)
DE (2) DE2912308C2 (ru)
SU (1) SU999958A3 (ru)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563652B1 (fr) * 1984-04-25 1986-07-25 Bignier Schmid Laurent Procede de fabrication d'une enveloppe a double paroi contenant un ecran absorbeur de neutrons pour le transport et le stockage d'une matiere radioactive
US6062270A (en) * 1997-01-27 2000-05-16 Lindab Ab Double-walled structure in a ventilation duct system
US5801342A (en) * 1997-01-27 1998-09-01 Lindab Ab Double-walled structure and method and arrangement for producing the same
DE19720551A1 (de) * 1997-05-16 1998-11-19 Heidelberger Druckmasch Ag Basisträgerhülse für Rotationsdruckmaschinen
DE19720549A1 (de) * 1997-05-16 1998-11-19 Heidelberger Druckmasch Ag Verfahren zur Herstellung von zylindrischen Beschichtungsträgern
US6543575B1 (en) 2000-06-14 2003-04-08 Lindab Ab Double-walled structure and connection arrangement
DE102009022391B4 (de) * 2009-05-22 2011-06-22 Federal-Mogul Sealing Systems GmbH, 57562 Verfahren zur Herstellung ringförmig ausgebildeter Dichtungselemente
WO2012009784A1 (en) 2010-07-21 2012-01-26 Paul Mcmillen Flexible tube, manufacturing method and apparatus
US20140044967A1 (en) 2012-06-29 2014-02-13 Rebecca Ayers System for processing and producing an aggregate
CN103021585B (zh) * 2012-12-31 2015-05-20 上海斯麟特种设备工程有限公司 一种旋转曲面联锁铠装电缆制造设备
US9962750B2 (en) 2013-08-07 2018-05-08 Bartell Machinery Systems, L.L.C. Systems and methods for forming a pipe carcass using multiple strips of material
RU2673475C1 (ru) * 2018-01-22 2018-11-27 Ривенер Мусавирович Габдуллин Элемент длинномерной гибкой колонны (варианты)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US285576A (en) * 1883-09-25 Method of making metal tubes
US1999151A (en) * 1931-01-30 1935-04-23 Paraffine Co Inc Pipe wrapping machine
DE746300C (de) * 1938-11-02 1944-07-21 Roehrenwerke Ag Deutsche Verfahren zur Herstellung von Mehrlagenhohlkoerpern, bei denen Bandeisen schraubenfoermig um ein Kernrohr gewickelt wird
US2321738A (en) * 1941-03-20 1943-06-15 Wurlitzer Co Apparatus for producing multiply tubing
US2998339A (en) * 1955-12-23 1961-08-29 Foil Process Corp Production of tubes and structural shapes from metal foils
USRE25457E (en) * 1956-10-08 1963-10-08 Apparatus for making tape reinforced plastic pipe
US2937436A (en) * 1956-11-19 1960-05-24 Owens Corning Fiberglass Corp Method for forming glass reinforced metal tubing
AT208682B (de) * 1957-06-07 1960-04-25 Wendel Et Cie Sa Vorrichtung zur Herstellung von Rohren
DE1819818U (de) * 1959-04-29 1960-10-20 Paul Kahle Rohrleitungsbau G M Biegeeinrichtung in einem rohrwerk zum herstellen schraubennahtgeschweisster rohre.
FR1307015A (fr) * 1961-11-27 1962-10-19 Procédé et machine pour la fabrication de conduites à revêtements intérieurs etconduites ou tubes fabriqués par ce procédé
DE1221183B (de) * 1962-04-27 1966-07-21 Mannesmann Meer Ag Schraubennaht-Rohrwerk mit in zur Rohrachse paralleler Ebene endlos umlaufenden Biegewerkzeugen
US3235941A (en) * 1964-10-30 1966-02-22 Lord Mfg Co Method of making tubular joints
FR1466719A (fr) * 1966-01-28 1967-01-20 Procédé et appareil pour la fabrication continue de tubes en enroulant une bande sur un mandrin
CA967471A (en) * 1970-05-28 1975-05-13 Ransome W. Erwin Composite fluorocarbon-metal tube
US3750249A (en) * 1970-10-05 1973-08-07 Caterpillar Tractor Co Method of manufacture of helically wound laminated bearings
US3965551A (en) * 1975-08-14 1976-06-29 Allied Tube & Conduit Corporation Production of polymer-coated steel tubing
DE2739321C2 (de) * 1977-09-01 1982-09-02 Karl Heinz 3353 Bad Gandersheim Vahlbrauk Verfahren zur Herstellung eines kunststoffbeschichteten Metallrohres für Installationszwecke

Also Published As

Publication number Publication date
BR8001872A (pt) 1980-11-18
DE3061572D1 (en) 1983-02-17
DE2912308A1 (de) 1980-10-16
US4387498A (en) 1983-06-14
AU534201B2 (en) 1984-01-12
CA1158535A (en) 1983-12-13
AU5664580A (en) 1980-10-02
JPS55133817A (en) 1980-10-18
DE2912308C2 (de) 1982-12-16
SU999958A3 (ru) 1983-02-23
ATE2199T1 (de) 1983-01-15
EP0017145A1 (de) 1980-10-15

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