WO1995015458A1 - A coated spiral duct as well as a method and an apparatus for the production thereof - Google Patents

A coated spiral duct as well as a method and an apparatus for the production thereof Download PDF

Info

Publication number
WO1995015458A1
WO1995015458A1 PCT/FI1994/000549 FI9400549W WO9515458A1 WO 1995015458 A1 WO1995015458 A1 WO 1995015458A1 FI 9400549 W FI9400549 W FI 9400549W WO 9515458 A1 WO9515458 A1 WO 9515458A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
coating
spiral
production
spiral tube
Prior art date
Application number
PCT/FI1994/000549
Other languages
French (fr)
Inventor
Jouni Hautala
Original Assignee
Hautala, Jari
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 Hautala, Jari filed Critical Hautala, Jari
Priority to AU11112/95A priority Critical patent/AU1111295A/en
Publication of WO1995015458A1 publication Critical patent/WO1995015458A1/en

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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement

Definitions

  • a coated spiral duct as well as a method and an apparatus for the production thereof
  • the present invention relates to an apparatus for the pro ⁇ duction of a coated spiral tube, said apparatus comprising a spiral seaming machine known per se, as well as means for coating a spiral seamed tube with a web-like coating.
  • the invention also relates to a coated spiral tube and to a method for the production of a coated tube, wherein the coating of said spiral tube is performed essentially simultaneously with the production of said tube.
  • spiral tube Conventionally the production and the coating of a spiral tube is performed as distinctly separate operations.
  • the spiral tube is for instance, produced using any method known per se, after which tube portions of a desired length are formed. Such premanufactured tube portions will then later on be coated with a suitable coating in correspondence to the actual needs.
  • the object of the present invention is to provide an arrange ⁇ ment wherein said drawbacks are avoided and which facilitates the production of a coated spiral tube in a flexible manner and with simple equipment.
  • This object is achieved with an apparatus which mainly is characterized in that means for the coating of said tube comprises several coating ' stations ar ⁇ ranged sequentially in the longitudinal direction of said tube and functioning in parallel, each coating station comprising feeding means for feeding a respective web-like coating material continuously and essentially simultaneously around
  • the apparatus comprises feeding means arranged in the same pro ⁇ duction line as a spiral seaming machine for feeding a coating material essentially simultaneously around said spiral tube being formed during a preceding production stage.
  • the arrangement according to the invention is based on the concept that the assembling of the surface material or coating on said spiral seamed tube is performed in connection with the production of said tube while utilizing the rotational move ⁇ ment of said tube.
  • the apparatus preferably comprises an apparatus for finishing the surface of said coated spiral tube, said apparatus being arranged in the same production line as said spiral seaming machine.
  • the apparatus further preferably comprises a cutting apparatus for cutting said tube comprising said coating layer into tube portions of a desired length.
  • Such an apparatus enables the implementation of the inventive method using simple means.
  • Such an apparatus may also be used for producing a maximal end product assortment.
  • the production line is also provided with a suitable cutting apparatus.
  • the invention also relates a method for the production of a spiral seamed tube, said method being characterized by the use of a conventional spiral seaming machine known per se, for the production of said tube, whereby, each coating procedure utilizes the movement directed upon said spiral seamed tube during the production thereof.
  • the invention further relates to a coated spiral tube es ⁇ sentially characterized by an inner spiral seamed core tube and at least two successive coating layers in direct con ⁇ nection therewith, said coating layers being formed of a web ⁇ like material and being arranged on said core tube essentially simultaneously with the production of said tube, suitably in a slightly overlapping manner, so that each coating is helically attached to an underlying layer.
  • said spiral tube com ⁇ prises coating layers arranged on said tube essentially simultaneously with the production of said tube.
  • Said spiral tube which is provided with said coating layer preferably comprises a surface layer which is arranged on said coated spiral tube in connection with the essentially simultaneous production and coating of said tube.
  • spiral seaming machine producing the proper spiral tube 2 is indi ⁇ cated by the numeral 1.
  • the spiral tube 2 to be fed to the following productional stages is supported by a support ring 3 in the vicinity of said spiral seaming machine 1.
  • the material of the tube to be produced may comprise e. g. galvanized, stain ⁇ less or acid proof steel sheet material, aluminum or plastics.
  • the production of said spiral tube 2 proper will be performed in a manner known per se, and thus it will not be disclosed here in any more detail.
  • the term spiral seam tube is here intended to mean also any tube produced using a helical winding method, the seaming procedure of which is performed using welding.
  • the production line comprises e. g. a feeding apparatus 4 for insulation material.
  • Said insulation material is fed in the form of a band 41 or a web, preferably through a glue material basin 42 in order to attach said insulation material to said spiral tube 2.
  • insulation material e. g. welled or crepped paper
  • a mineral wool web or the like may be used in accordance with the insulation demand.
  • At the fol ⁇ lowing stage further web layers are, for example, run onto the insulated spiral tube in order to reinforce the structure thereof.
  • a feeding apparatus 5 arranged adja ⁇ cent to the production line, said feeding apparatus feeding a desired web material 51, preferably through a glue basin 52 in order to achieve an attachment.
  • said spiral tube 2 with its coating layers 4, 5 is preferably run through an apparatus 6 arranged for tightening the band layers.
  • Said apparatus comprises an endless belt 61 which is driven by pulling rolls 62 connected to a drive (not shown).
  • Said appa ⁇ ratus 6 also facilitates the rotating movement of said spiral tube 2, which operation has a favorable influence on the power requirement of said spiral seaming machine 1.
  • Said coated spiral tube can be provided with a suitable sur ⁇ face material using a feeding apparatus 7.
  • a surface material which preferably is fed as a web 71 through a glue basin 72 may be for example an aluminum foil, hard cardboard, colored paper or a similar material.
  • the adhesive material to be used may be, for example, a glue based on a silicate solution or, for example, water-glass which is preferable from the point of fire protection.
  • a feeding appa ⁇ ratus 8 may further be connected to the production line.
  • a surface layer is preferably formed by a material 81 fed by said feeding apparatus 8 through a glue basin 82, whereby said material 81 may comprise for example sheet metal, plastics or the like material.
  • a seam attachment device 9 will be needed which forms a seam in the sheet metal in ac ⁇ cordance with the spiral seam of said spiral tube 2.
  • Said attachment device may be a seam collapsing or a seam welding apparatus.
  • Said feeding devices 4, 5, 7 and 8 are arranged, as disclosed in the drawing, at a defined angle to the spiral tube 2 proper so that said spiral tube during its rotation will draw said coating material webs 41, 51, 71 and 81 helically around itself in order to form a regular and even coating layer.
  • a painting apparatus 10 is favorably connected to the production line for any painting which might be needed.
  • an adjustable cutting device 11 is further provided for cutting said essentially continuous ⁇ ly manufactured coated spiral tube into tube portions 21 of a desired length.
  • a circular saw blade or the like device, movable in the feeding direction of said spiral seamed tube, may favorably be used as said cutting device.

Abstract

The invention relates to a method for the manufacturing of a coated spiral tube. In order to obtain an efficient and economic production, the manufacturing of said spiral tube and the coating thereof with a coating material (41, 51, 71, 81) supplied by a feeding device (4, 5, 7, 8) is performed essentially simultaneously in subsequent stages in the same production line. The invention also relates to an apparatus for the utilization of said method, as well as a product manufactured with said method.

Description

A coated spiral duct as well as a method and an apparatus for the production thereof
The present invention relates to an apparatus for the pro¬ duction of a coated spiral tube, said apparatus comprising a spiral seaming machine known per se, as well as means for coating a spiral seamed tube with a web-like coating. The invention also relates to a coated spiral tube and to a method for the production of a coated tube, wherein the coating of said spiral tube is performed essentially simultaneously with the production of said tube.
Conventionally the production and the coating of a spiral tube is performed as distinctly separate operations.. The spiral tube, is for instance, produced using any method known per se, after which tube portions of a desired length are formed. Such premanufactured tube portions will then later on be coated with a suitable coating in correspondence to the actual needs.
Due to several production stages, such known methods are time consuming and laborious. Further, the attachment of a coating to a tube of a given length, especially at the ends of a tube portion, is difficult and needs a considerable amount of pre¬ cision, and, on the other hand, demands extra production stages due to an end portion adaptation or levelling which must be done at the ends of said tube.
The object of the present invention is to provide an arrange¬ ment wherein said drawbacks are avoided and which facilitates the production of a coated spiral tube in a flexible manner and with simple equipment. This object is achieved with an apparatus which mainly is characterized in that means for the coating of said tube comprises several coating 'stations ar¬ ranged sequentially in the longitudinal direction of said tube and functioning in parallel, each coating station comprising feeding means for feeding a respective web-like coating material continuously and essentially simultaneously around
SUBSTITUTESHEET the spiral tube formed in said spiral seaming machine at a preceding production stage, each coating material web being arranged for surrounding said tube as a result of the same rotational movement that said spiral seaming machine exerts upon said spiral tube in connection with the production thereof.
The production of said spiral tube as well as the coating thereof will thus be performed essentially simultaneously and in successive phases in a common production line, whereby the apparatus comprises feeding means arranged in the same pro¬ duction line as a spiral seaming machine for feeding a coating material essentially simultaneously around said spiral tube being formed during a preceding production stage.
The arrangement according to the invention is based on the concept that the assembling of the surface material or coating on said spiral seamed tube is performed in connection with the production of said tube while utilizing the rotational move¬ ment of said tube.
The apparatus preferably comprises an apparatus for finishing the surface of said coated spiral tube, said apparatus being arranged in the same production line as said spiral seaming machine. The apparatus further preferably comprises a cutting apparatus for cutting said tube comprising said coating layer into tube portions of a desired length.
Such an apparatus enables the implementation of the inventive method using simple means. Such an apparatus may also be used for producing a maximal end product assortment.
Making the steps simultaneous also gives the opportunity to increase the production capacity and speed. Several coating apparatuses feeding different types of coatings may be ar¬ ranged in connection with the production line for said spiral seamed tube, and said apparatuses can be switched into action in accordance with each respective coating need. Thus, the flexible adaptation of the production line for a wide range of products may be facilitated.
Preferably, the production line is also provided with a suitable cutting apparatus.
The invention also relates a method for the production of a spiral seamed tube, said method being characterized by the use of a conventional spiral seaming machine known per se, for the production of said tube, whereby, each coating procedure utilizes the movement directed upon said spiral seamed tube during the production thereof.
The invention further relates to a coated spiral tube es¬ sentially characterized by an inner spiral seamed core tube and at least two successive coating layers in direct con¬ nection therewith, said coating layers being formed of a web¬ like material and being arranged on said core tube essentially simultaneously with the production of said tube, suitably in a slightly overlapping manner, so that each coating is helically attached to an underlying layer. Thus, said spiral tube com¬ prises coating layers arranged on said tube essentially simultaneously with the production of said tube.
Said spiral tube which is provided with said coating layer preferably comprises a surface layer which is arranged on said coated spiral tube in connection with the essentially simultaneous production and coating of said tube.
An illustrative embodiment of the invention will now be de¬ scribed in more detail with reference to the appended sche¬ matic drawing which discloses a production line for a coated spiral tube.
In the production line disclosed in the drawing a spiral seaming machine producing the proper spiral tube 2 is indi¬ cated by the numeral 1. The spiral tube 2 to be fed to the following productional stages is supported by a support ring 3 in the vicinity of said spiral seaming machine 1. The material of the tube to be produced may comprise e. g. galvanized, stain¬ less or acid proof steel sheet material, aluminum or plastics. The production of said spiral tube 2 proper will be performed in a manner known per se, and thus it will not be disclosed here in any more detail. The term spiral seam tube is here intended to mean also any tube produced using a helical winding method, the seaming procedure of which is performed using welding.
As the next item the production line comprises e. g. a feeding apparatus 4 for insulation material. Said insulation material is fed in the form of a band 41 or a web, preferably through a glue material basin 42 in order to attach said insulation material to said spiral tube 2. For insulation material e. g. welled or crepped paper, a mineral wool web or the like may be used in accordance with the insulation demand. At the fol¬ lowing stage further web layers are, for example, run onto the insulated spiral tube in order to reinforce the structure thereof. For this purpose a feeding apparatus 5 arranged adja¬ cent to the production line, said feeding apparatus feeding a desired web material 51, preferably through a glue basin 52 in order to achieve an attachment.
Prior to the finishing of the final product said spiral tube 2 with its coating layers 4, 5 is preferably run through an apparatus 6 arranged for tightening the band layers. Said apparatus comprises an endless belt 61 which is driven by pulling rolls 62 connected to a drive (not shown). Said appa¬ ratus 6 also facilitates the rotating movement of said spiral tube 2, which operation has a favorable influence on the power requirement of said spiral seaming machine 1.
Said coated spiral tube can be provided with a suitable sur¬ face material using a feeding apparatus 7. A surface material which preferably is fed as a web 71 through a glue basin 72 may be for example an aluminum foil, hard cardboard, colored paper or a similar material. The adhesive material to be used may be, for example, a glue based on a silicate solution or, for example, water-glass which is preferable from the point of fire protection.
In order to achieve a suitable outer layer, a feeding appa¬ ratus 8 may further be connected to the production line. A surface layer is preferably formed by a material 81 fed by said feeding apparatus 8 through a glue basin 82, whereby said material 81 may comprise for example sheet metal, plastics or the like material. For sheet metal a seam attachment device 9 will be needed which forms a seam in the sheet metal in ac¬ cordance with the spiral seam of said spiral tube 2. Said attachment device may be a seam collapsing or a seam welding apparatus.
Said feeding devices 4, 5, 7 and 8 are arranged, as disclosed in the drawing, at a defined angle to the spiral tube 2 proper so that said spiral tube during its rotation will draw said coating material webs 41, 51, 71 and 81 helically around itself in order to form a regular and even coating layer.
Further, a painting apparatus 10 is favorably connected to the production line for any painting which might be needed.
At the end of the production line an adjustable cutting device 11 is further provided for cutting said essentially continuous¬ ly manufactured coated spiral tube into tube portions 21 of a desired length. A circular saw blade or the like device, movable in the feeding direction of said spiral seamed tube, may favorably be used as said cutting device. Thus, the manu¬ facturing, coating, finishing and cutting of a spiral tube manufactured essentially in a continuous production into tube portions of a desired length can be performed in a straight shift in the same production line. With optional devices con- nectable to the production line an end product adapted to meet the appropriate needs may always be achieved. The drawing and the description attached thereto is only in¬ tended to clarify the basic idea of the invention. With res¬ pect to the details, such as the kind of spiral seaming machine, the number of feeding and finishing devices as well as their mutual arrangement, an the coating materials, the inventive method, arrangement and product may be varied within the scope of the claims.

Claims

Claims
1. An apparatus for the production of a spiral tube, said apparatus comprising a spiral seaming machine known per se, as well as means for coating said spiral tube with a web-like coating, c h a r a c t e r i z e d in that said means for coating said tube comprises several coating stations which are arranged sequentially with respect to the longitudinal direction of said tube (2) and which function in a parallel manner, each of said coating stations comprising feeding devices (4, 5, 7 and 8, respectively) for feeding a coating material web (41, 51, 71 and 81, respectively) continuously and essentially simultaneously around the spiral tube (2) formed in said spiral seaming machine (1) in the immediately preceding production stage, whereby each coating material web (41, 51, 71, 81) is arranged to wind around said tube es¬ sentially due to the rotational movement which said spiral seaming machine (1) as such exerts upon said spiral tube (2) during the production thereof.
2. An apparatus according to claim 1, c h a r a c t e ¬ r i z e in that each coating station is arranged to coat, in its turn, the treated tube portion leaving the previous station, whereby each feeding device (4, 5, 7 and 8, res¬ pectively) preferably may be selectively switched to function in accordance with the respective coating demand.
3. An apparatus according to claim 1 or 2, c h a r a c t e ¬ r i z e in that said apparatus comprises a device (9, 10) arranged in the same production line with said spiral seaming machine (1) for finishing the surface of said coated spiral tube.
4. An apparatus according to any one of claims 1 to 3, c a ¬ r a c t e r i z e d in that said apparatus comprises a cut¬ ting device (11) for cutting said spiral tube (2) provided with a coating layer (41, 51, 71, 81) into tube portions (21) of a desired length.
5. A coated spiral tube, c h a r a c t e r i z e d in said tube comprising an inner spiral core tube (2) and at least two superimposed coating layers (41, 51, 71, 81) directly con¬ nected thereto, said coating layers being formed of a web-like material and arranged on said core tube (2) essentially simul¬ taneously with the production thereof and suitably being at least slightly overlapping so that each coating is helically attached to an underlying layer.
6. A coated spiral tube according to claim 5, c h a r a c t e ¬ r i z e d in that at least one of said coating layers com¬ prises a surface layer (81) arranged on said coated spiral tube (2) in connection with the essentially simultaneous pro¬ duction and actual coating thereof, suitably as a final coating operation.
7. A method for the production of a coated tube, whereby the coating of a spiral tube is performed essentially simultaneous¬ ly with the production of thereof, c h a r a c t e r i z e d in that a conventional spiral seaming apparatus (1) known per se is used for manufacturing said tube and each coating ope¬ ration utilizes the movement exerted by said spiral seaming machine (1) on said spiral tube (2) during the manufacture thereof.
8. A method according to claim 7, c h a r a c t e r i z e d in that several coating layers (41, 51, 71, 81) are supplied suitably selectively one upon the other as essentially sequential operations.
9. A method according to any preceding claim, c h a r a c t e ¬ r i z e d in that said spiral tube (2) manufactured in a continuous feeding operation and provided with superimposed coating layers (41, 51, 71, 81) is cut after the last coating sequence in order to form tube portions (21) of a desired length.
PCT/FI1994/000549 1993-12-03 1994-12-02 A coated spiral duct as well as a method and an apparatus for the production thereof WO1995015458A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11112/95A AU1111295A (en) 1993-12-03 1994-12-02 A coated spiral duct as well as a method and an apparatus for the production thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI935433 1993-12-03
FI935433A FI103606B1 (en) 1993-12-03 1993-12-03 Apparatus and Method for Manufacture of Coated Coiled Tube and Coated Coiled Tube

Publications (1)

Publication Number Publication Date
WO1995015458A1 true WO1995015458A1 (en) 1995-06-08

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ID=8539081

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1994/000549 WO1995015458A1 (en) 1993-12-03 1994-12-02 A coated spiral duct as well as a method and an apparatus for the production thereof

Country Status (3)

Country Link
AU (1) AU1111295A (en)
FI (1) FI103606B1 (en)
WO (1) WO1995015458A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434502A (en) * 1967-05-22 1969-03-25 Charles D Snelling Flexible fire resistant air duct
GB1330861A (en) * 1970-01-27 1973-09-19 Ici Ltd Production of tube by helical winding
GB1347248A (en) * 1970-06-18 1974-02-20 Ici Ltd Tubular products
DE2724899B2 (en) * 1977-06-02 1980-01-31 Christian Majer Kg, Maschinenfabrik, 7400 Tuebingen Device on a film tube winding machine for controlling a cutting element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434502A (en) * 1967-05-22 1969-03-25 Charles D Snelling Flexible fire resistant air duct
GB1330861A (en) * 1970-01-27 1973-09-19 Ici Ltd Production of tube by helical winding
GB1347248A (en) * 1970-06-18 1974-02-20 Ici Ltd Tubular products
DE2724899B2 (en) * 1977-06-02 1980-01-31 Christian Majer Kg, Maschinenfabrik, 7400 Tuebingen Device on a film tube winding machine for controlling a cutting element

Also Published As

Publication number Publication date
FI935433A (en) 1995-06-04
AU1111295A (en) 1995-06-19
FI103606B (en) 1999-07-30
FI935433A0 (en) 1993-12-03
FI103606B1 (en) 1999-07-30

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