JP2862371B2 - Equipment for manufacturing metal pipes for composite pipes - Google Patents

Equipment for manufacturing metal pipes for composite pipes

Info

Publication number
JP2862371B2
JP2862371B2 JP2338382A JP33838290A JP2862371B2 JP 2862371 B2 JP2862371 B2 JP 2862371B2 JP 2338382 A JP2338382 A JP 2338382A JP 33838290 A JP33838290 A JP 33838290A JP 2862371 B2 JP2862371 B2 JP 2862371B2
Authority
JP
Japan
Prior art keywords
metal
peripheral surface
tube
pipe
aluminum
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 - Fee Related
Application number
JP2338382A
Other languages
Japanese (ja)
Other versions
JPH04200920A (en
Inventor
高正 圓山
一人 小林
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP2338382A priority Critical patent/JP2862371B2/en
Publication of JPH04200920A publication Critical patent/JPH04200920A/en
Application granted granted Critical
Publication of JP2862371B2 publication Critical patent/JP2862371B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • B23K20/103—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding using a roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • B23K20/2336—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer both layers being aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/16—Composite materials, e.g. fibre reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、例えば、アルミニウム管のように比較的薄
肉の金属管内周面、または内周面と外周面の両方に合成
樹脂層を被覆した複合管の製造に際して、該金属管を製
造するための装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) In the present invention, for example, a synthetic resin layer is coated on the inner peripheral surface of a relatively thin metal tube such as an aluminum tube, or on both the inner and outer peripheral surfaces. The present invention relates to an apparatus for manufacturing a metal tube when manufacturing a composite tube.

（従来の技術） アルミニウム管の内周面、または内周面と外周面の両
方に合成樹脂を被覆した複合管は、通常、帯状のアルミ
ニウム製シートを、その各側縁部同士が重なりあうよう
に断面真円状の円管に形成し、その重ね合わされた各側
縁部同士を超音波溶接してアルミニウム管を連続的に製
造した後に、該アルミニウム管の内周面または内周面と
外周面の両方に合成樹脂層を被覆することにより製造さ
れる。(Prior Art) A composite tube in which the inner peripheral surface of an aluminum tube, or both the inner peripheral surface and the outer peripheral surface are coated with a synthetic resin, is usually made of a strip-shaped aluminum sheet such that the respective side edges thereof overlap each other. After the aluminum pipe is continuously manufactured by ultrasonic welding the superposed side edges of the aluminum pipe, the inner peripheral surface or the inner peripheral surface and the outer peripheral surface of the aluminum pipe are formed. It is manufactured by coating both sides with a synthetic resin layer.

このような複合管の製造に際して、アルミニウムシー
トは、通常、第３図に示すライナー式の円管成形機によ
り、円管状に成形される。該ライナー式円管成形機は、
内部を溶接樹脂が通流する樹脂通流管71と、内周面が該
樹脂通流管71に適当な間隔をあけて外嵌された外型72と
を有する。外型72の内周面には、樹脂通流管71の外周面
とは所定の環状の間隙をあけた状態で該樹脂通流管71に
外嵌される円筒状のライナー73が設けられている。そし
て、樹脂通流管71とライナー73との間に形成された環状
の間隙内に、予め断面Ｕ字状に湾曲された状態のアルミ
ニウムシート74が通過される。そして、その間隙を通過
する際に、該アルミニウムシート74はライナー73に摺接
して、その各側縁部同士が重ね合わされた状態の円管状
に成形されにされる。円管状に成形されたアルミニウム
シート74の外周側の側縁部には、超音波溶接機のホーン
75が転接し、各側縁部同士が超音波溶接されてアルミニ
ウム管とされる。In producing such a composite tube, the aluminum sheet is usually formed into a circular tube by a liner type circular tube forming machine shown in FIG. The liner type circular tube molding machine is
It has a resin flow pipe 71 through which the welding resin flows, and an outer mold 72 whose inner peripheral surface is fitted to the resin flow pipe 71 at an appropriate interval. An inner peripheral surface of the outer mold 72 is provided with a cylindrical liner 73 which is fitted to the resin flow tube 71 in a state where a predetermined annular gap is provided with the outer peripheral surface of the resin flow tube 71. I have. Then, an aluminum sheet 74 having a U-shaped cross section is passed through an annular gap formed between the resin flow pipe 71 and the liner 73. When the aluminum sheet 74 passes through the gap, the aluminum sheet 74 comes into sliding contact with the liner 73, and is formed into a tubular shape with its side edges overlapped with each other. A horn of an ultrasonic welding machine is provided on the outer peripheral side edge of the aluminum sheet 74 formed into a tubular shape.
75 is rolled and the side edges are ultrasonically welded together to form an aluminum tube.

樹脂通流管71は、円管状に成形される直前のアルミニ
ウムシート74の各側縁部間から外型72内に挿入され、そ
の先端部がアルミニウムシート74の各側縁部が溶接され
たアルミニウム管内に達している。そして、該樹脂通流
管71の先端部から溶接樹脂がアルミニウム管の内周面に
押し出される。The resin flow pipe 71 is inserted into the outer mold 72 from between the respective side edges of the aluminum sheet 74 immediately before being formed into a tubular shape, and the distal end thereof is welded to the aluminum sheet 74 by welding the respective side edges of the aluminum sheet 74. Has reached the inside of the tube. Then, the welding resin is extruded from the tip of the resin flow pipe 71 to the inner peripheral surface of the aluminum pipe.

このような円管成形機に使用されるライナー73の材質
としては、フッ素樹脂、芳香族ポリエステル樹脂等の耐
熱性、耐摩耗性、更にはアルミニウムシート等の金属シ
ートとの摺動性に優れた合成樹脂が用いられる。The material of the liner 73 used in such a tube forming machine is excellent in heat resistance and abrasion resistance of fluorine resin, aromatic polyester resin and the like, and further excellent in sliding property with a metal sheet such as an aluminum sheet. Synthetic resin is used.

（発明が解決しようとする課題） このようなライナー式の円管成形機では、合成樹脂製
のライナー73が使用されているので、製造されるアルミ
ニウム管の外周面が損傷するおそれはない。しかしなが
ら、合成樹脂製のライナー73は、アルミニウムシート74
との摺接によりきわめて容易に摩耗する。そのため、ラ
イナー73は、アルミニウムシート73が摺接している間に
順次摩耗し、連続的に成形されるアルミニウム管の外径
が順次大きくなるおそれがある。(Problem to be Solved by the Invention) In such a liner-type circular tube molding machine, since the liner 73 made of synthetic resin is used, there is no possibility that the outer peripheral surface of the manufactured aluminum tube is damaged. However, the liner 73 made of synthetic resin is
Wears very easily due to sliding contact with Therefore, the liner 73 may be gradually worn while the aluminum sheet 73 is in sliding contact, and the outer diameter of the continuously formed aluminum pipe may be gradually increased.

また、製造されるアルミニウム管は、アルミニウムシ
ートの各側縁部同士が重ね合わされて溶接されているた
めに、その溶接部が若干盛り上がった状態になってい
る。また、アルミニウムシートを円管状に成形する際
に、外周面に凹凸が生じるおそれもある。Also, in the manufactured aluminum pipe, the side edges of the aluminum sheet are overlapped and welded, so that the welded portion is slightly raised. In addition, when the aluminum sheet is formed into a tubular shape, there is a possibility that irregularities may occur on the outer peripheral surface.

本発明は上記従来の問題を解決するものであり、その
目的は、製造される金属管が所定の外径で安定的に製造
される複合管用金属管の製造装置を提供することにあ
る。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an apparatus for manufacturing a metal pipe for a composite pipe in which a manufactured metal pipe is stably manufactured with a predetermined outer diameter.

（課題を解決するための手段） 本発明の複合管用金属管の製造装置は、金属管の少な
くとも内周面に合成樹脂層が被覆された複合管を製造す
る際に、内周面が合成樹脂層にて被覆されるように、帯
状の金属シートの各側縁部を重ねて円管状に成形し、そ
の各側縁部同士を溶接して金属管を製造する複合管用金
属管の製造装置であって、 内部に円筒状の空間が形成されており、その空間に帯
状の金属シートを通過させる際に内周面に該金属シート
を摺接させて、該金属シートの各側縁部同士を重ね合せ
た円管状に成形する外型と、 該外型により重ね合わされた金属シートの各側縁部同
士を溶接する溶接機と、 該溶接機の金属シート搬送方向下流側に配設されてお
り、製造すべき金属管の外径にほぼ等しい外径の環状の
空間が形成されるように、軸方向に沿って円弧状に窪ん
だ湾曲面をそれぞれ有した複数の鼓型ローラを有する整
形機と、を具備してなり、これにより上記目的が達成さ
れる。(Means for Solving the Problems) An apparatus for manufacturing a metal pipe for a composite pipe according to the present invention is characterized in that when manufacturing a composite pipe in which at least the inner peripheral face of the metal pipe is coated with a synthetic resin layer, the inner peripheral surface is made of synthetic resin In order to be covered with a layer, the respective side edges of the band-shaped metal sheet are overlapped and formed into a circular tube, and the respective side edges are welded to each other to manufacture a metal tube for a composite pipe. There is a cylindrical space formed therein, and when the band-shaped metal sheet is passed through the space, the metal sheet is slid in contact with the inner peripheral surface, and each side edge of the metal sheet is connected to each other. An outer mold for forming a superposed circular tube, a welding machine for welding each side edge of the metal sheets superposed by the outer mold, and a welding machine downstream of the welding machine in the metal sheet conveying direction. So that an annular space having an outer diameter substantially equal to the outer diameter of the metal tube to be manufactured is formed. And a shaping machine having a plurality of hourglass rollers each having a curved surface depressed in an arc shape along the axial direction, thereby achieving the above object.

（作用） 本発明の複合管用金属管の製造装置は、外型の内周面
に金属シートが摺接することにより、該金属シートが円
管状に成形され、側縁部同士が溶接機により溶接された
後に、整形機における各鼓型ローラにより形成される空
間内を通過される。各鼓型ローラは、円管状に成形され
た金属管の外径が、製造すべき金属管の外径よりも大き
い場合には、搬送される金属管が各鼓型ローラの外周面
にて縮径されて、所定の外径にされる。(Operation) In the apparatus for manufacturing a metal pipe for a composite pipe of the present invention, the metal sheet is formed into a circular tube by slidingly contacting the inner peripheral surface of the outer mold, and the side edges are welded by a welding machine. After that, it passes through the space formed by each hourglass roller in the shaping machine. When the outer diameter of the metal tube formed into a tubular shape is larger than the outer diameter of the metal tube to be manufactured, each of the hourglass rollers reduces the conveyed metal tube on the outer peripheral surface of each hourglass roller. The diameter is adjusted to a predetermined outer diameter.

（実施例） 以下に本発明を実施例について説明する。(Examples) Hereinafter, the present invention will be described with reference to examples.

本発明の複合管用金属管の製造装置は、例えば、アル
ミニウム管の内周面、または内周面と外周面の両面に合
成樹脂層を被覆した複合管を製造するに際して、アルミ
ニウム管を製造するために使用される。The apparatus for manufacturing a metal pipe for a composite pipe of the present invention is used, for example, to manufacture an aluminum pipe when manufacturing a composite pipe in which the inner peripheral surface of an aluminum pipe, or both the inner peripheral face and the outer peripheral face are coated with a synthetic resin layer. Used for

第２図に示すように、該金属管製造装置50は、アンコ
イラ20から引き出された帯状のアルミニウムシート10を
アルミニウム管に製造する。アンコイラ20から引き出さ
れたアルミニウムシート10は、支持ローラ31および32に
より水平状に支持される。下流側の支持ローラ32から繰
り出されたアルミニウムシート10は、該支持ローラ32か
ら離れるにつれて、順次、断面Ｕ字状から円形状へと変
形され、内型40の配設位置へと搬送される。As shown in FIG. 2, the metal tube manufacturing apparatus 50 manufactures a strip-shaped aluminum sheet 10 drawn from the uncoiler 20 into an aluminum tube. The aluminum sheet 10 pulled out from the uncoiler 20 is horizontally supported by support rollers 31 and 32. The aluminum sheet 10 fed from the downstream support roller 32 is sequentially deformed from a U-shaped cross section to a circular shape as the distance from the support roller 32 is increased, and is conveyed to the position where the inner die 40 is disposed.

内型40は、断面Ｕ字状に変形されたアルミニウムシー
ト10の各側縁部の間に下端部が位置する支持部41と、該
支持部41の下端部からアルミニウムシート10の搬送方向
下流側へ延出する円筒状の樹脂通流管42とを有する。該
樹脂通流管42の内部にはコア（図示せず）が同心状に挿
通しており、両者の間隙を溶融樹脂が通流する。The inner die 40 has a support portion 41 whose lower end is located between the side edges of the aluminum sheet 10 deformed into a U-shaped cross section, and a downstream side in the transport direction of the aluminum sheet 10 from the lower end of the support portion 41. And a cylindrical resin flow pipe 42 extending to the outside. A core (not shown) is inserted concentrically inside the resin flow pipe 42, and the molten resin flows through the gap between the two.

該内型40の樹脂通流部42における中程に、外型51が配
設されている。該外型51は、内部に円筒状の空間が形成
されており、その空間内に円筒状のライナー（図示せ
ず）が嵌合されている。そして、ライナーにより形成さ
れる空間内にアルミニウムシート10が挿通される。該ア
ルミニウムシート10は、ライナーの円筒状の空間が通過
する際に、該ライナーの内周面に摺接することにより、
アルミニウムシート10の各側縁部同士が重なった円管状
に形成される。An outer mold 51 is provided in the middle of the resin flow section 42 of the inner mold 40. The outer mold 51 has a cylindrical space formed therein, and a cylindrical liner (not shown) is fitted in the space. Then, the aluminum sheet 10 is inserted into the space formed by the liner. When the aluminum sheet 10 passes through the cylindrical space of the liner, by slidingly contacting the inner peripheral surface of the liner,
The aluminum sheet 10 is formed in a tubular shape in which the respective side edges overlap.

外型51のアルミニウムシート10搬送方向下流側には、
超音波溶接機のホーン52が配設されており、該ホーン52
により、円管状に成形されたアルミニウムシート10の相
互重なった各側縁部が超音波溶接される。On the downstream side in the transport direction of the aluminum sheet 10 of the outer mold 51,
A horn 52 of an ultrasonic welding machine is provided.
Thereby, the mutually overlapping side edges of the aluminum sheet 10 formed into a tubular shape are ultrasonically welded.

内型40における樹脂通流管42の先端部からは、溶融樹
脂が放射状に押し出され、超音波溶接機のホーン52によ
りアルミニウムシート10の各側縁部が溶接されて製造さ
れたアルミニウム管の内周面が、その樹脂にて被覆され
る。From the tip of the resin flow tube 42 in the inner die 40, the molten resin is radially extruded, and the respective side edges of the aluminum sheet 10 are welded by the horn 52 of the ultrasonic welding machine. The peripheral surface is covered with the resin.

該超音波溶接機のホーン52の下流側には、整形機20が
配設されている。該整形機20は、第１図に示すように、
アルミニウムシート10の進行方向に直交状態で上側およ
び下側に配設された一対の鼓型ローラ21および21を有す
る。各鼓型ローラ21は、外周面に、製造されたアルミニ
ウム管の外周面におけるほぼ半周に転接するように軸方
向に半円状に窪んだ湾曲面21aを有している。相互に対
向する各鼓ローラ21の湾曲面21aそれぞれにより円環状
の空間が形成されており、その空間の直径は、製造すべ
き複合管の外径に等しくなっている。各鼓型ローラ21の
各端部外周面は、軸心方向に外径が一定の直円筒部21b
になっている。そして、一対の鼓型ローラ21および21
は、フレーム22にそれぞれ回転可能に取り付けられてい
る。The shaping machine 20 is provided downstream of the horn 52 of the ultrasonic welding machine. The shaping machine 20, as shown in FIG.
It has a pair of hourglass rollers 21 and 21 disposed on the upper side and the lower side in a state orthogonal to the traveling direction of the aluminum sheet 10. Each hourglass roller 21 has on its outer peripheral surface a curved surface 21a that is depressed in a semicircular shape in the axial direction so as to be in rolling contact with almost half of the outer peripheral surface of the manufactured aluminum tube. An annular space is formed by each curved surface 21a of each of the hourglass rollers 21 facing each other, and the diameter of the space is equal to the outer diameter of the composite pipe to be manufactured. The outer peripheral surface of each end of each hourglass roller 21 is a straight cylindrical portion 21b having a constant outer diameter in the axial direction.
It has become. Then, a pair of hourglass rollers 21 and 21
Are rotatably attached to the frame 22, respectively.

該フレーム22は、外型51から搬送される円管状のアル
ミニウムシート10が鼓型ロール21および21間を通過する
際に、該アルミニウムシート10の搬送に追従して移動し
ないように支持体23（第２図参照）に支持されている。
各鼓型ローラ21の材質としては、金属または硬質の合成
樹脂等が用いられる。When the aluminum sheet 10 conveyed from the outer die 51 passes between the hourglass rolls 21 and 21, the frame 22 supports the support member 23 (not shown) so as not to move following the conveyance of the aluminum sheet 10. (See FIG. 2).
As a material of each hourglass roller 21, metal or hard synthetic resin or the like is used.

該円管整形機20の下流側には、第２図に示すように、
引取機60および60が配設されており、両引取機60によ
り、整形機20を通過して製造された複合管が搬送され
る。On the downstream side of the circular tube shaping machine 20, as shown in FIG.
Take-up machines 60 and 60 are provided, and both take-up machines 60 transport the composite pipe manufactured through the shaping machine 20.

このような構成の複合管製造装置では、複合管が次の
ようにして製造される。In the composite pipe manufacturing apparatus having such a configuration, the composite pipe is manufactured as follows.

内型40における樹脂通流管42の外周面と、外型51内の
ライナー内周面との間に、アルミニウムシート10が、断
面Ｕ字状から円形状へと順次変形された状態で進入す
る。該アルミニウムシート10は、ライナー内の円筒状空
間を通過する際に、その内周面に摺接して、該内周面に
より強制的に湾曲され、各側縁部が重なり合った断面が
真円の円管状に成形される。The aluminum sheet 10 enters between the outer peripheral surface of the resin flow pipe 42 in the inner die 40 and the inner peripheral surface of the liner in the outer die 51 in a state where the aluminum sheet 10 is sequentially deformed from a U-shaped cross section to a circular shape. . When the aluminum sheet 10 passes through the cylindrical space in the liner, it slides on the inner peripheral surface thereof, is forcibly curved by the inner peripheral surface, and the cross section where each side edge overlaps is a perfect circle. It is formed into a tubular shape.

外型51を通過した円管状のアルミニウムシート10は、
相互に重ね合わされた各側縁部の外周側部分が超音波溶
接機におけるホーン52に転接されて、各側縁部同士が溶
接される。これにより、円管状のアルミニウム管が製造
される。The tubular aluminum sheet 10 that has passed through the outer mold 51 is
The outer peripheral side portion of each side edge overlapped with each other is rolled into contact with the horn 52 of the ultrasonic welding machine, and the respective side edges are welded to each other. Thus, a circular aluminum tube is manufactured.

このとき、製造されたアルミニウム管内に先端部が位
置する樹脂通流管42の先端部からは、溶融樹脂が押し出
され、該溶融樹脂によりアルミニウム管内周面がライニ
ングされる。At this time, the molten resin is extruded from the distal end of the resin flow pipe 42, the distal end of which is located in the manufactured aluminum pipe, and the inner peripheral surface of the aluminum pipe is lined with the molten resin.

外型51におけるライナーは、通常、合成樹脂により構
成されており、アルミニウムシート10が摺接することに
より摩耗する。このため、ライナーが摩耗した状態でア
ルミニウムシート10が円管状に整形されると、形成され
る円管状アルミニウムシートの外径が大きくなる。外径
が大きい状態で円管状に成形されたアルミニウムシート
10は、重ね合わされた各側縁部同士が超音波溶接機のホ
ーン52により溶接されるので、外径の大きいアルミニウ
ム管が形成される。The liner of the outer mold 51 is usually made of a synthetic resin, and is worn when the aluminum sheet 10 comes into sliding contact. Therefore, when the aluminum sheet 10 is shaped into a tubular shape with the liner worn, the outer diameter of the formed tubular aluminum sheet increases. Aluminum sheet formed into a tubular shape with a large outer diameter
In the case of 10, the overlapped side edges are welded by the horn 52 of the ultrasonic welding machine, so that an aluminum tube having a large outer diameter is formed.

外型51から搬送されて、重ね合わされた各側縁部同士
が溶接されたアルミニウム管は、整形機20における鼓型
ローラ21および21の湾曲面21aおよび21a間を通過する。
該湾曲面21aおよび21aは、製造すべき円管の外周面にほ
ぼ全周にわたって転接するようになっている。そのた
め、外径が大きくなったアルミニウム管が該鼓型ローラ
21および21間を通過するときには、該アルミニウム管12
の外周面が、製造すべきアルミニウム管の外径に等しく
なるように縮径される。従って、外型51により所定の外
径よりも大きい外径のアルミニウム管12が製造された場
合にも、最終的には、その外径が製造すべきアルミニウ
ム管の外径に縮径される。また、重ね合わされた各側縁
部同士を溶接されたアルミニウム管12は、その溶接部の
外周面が盛り上がっているが、該アルミニウム管12が鼓
型ローラ21および21の湾曲面21aおよび21a間を通過する
ことにより、その盛り上がりも除去され、さらには、他
の原因でアルミニウム管12の外周面に生じた凹凸も解消
される。The aluminum tube conveyed from the outer mold 51 and having the overlapped side edges welded to each other passes between the curved surfaces 21a and 21a of the hourglass rollers 21 and 21 in the shaping machine 20.
The curved surfaces 21a and 21a are configured to be in rolling contact with the outer peripheral surface of a circular pipe to be manufactured over substantially the entire circumference. For this reason, the aluminum tube with the larger outer diameter is
When passing between 21 and 21, the aluminum tube 12
Is reduced in diameter so as to be equal to the outer diameter of the aluminum tube to be manufactured. Therefore, even when the aluminum tube 12 having an outer diameter larger than the predetermined outer diameter is manufactured by the outer mold 51, the outer diameter is finally reduced to the outer diameter of the aluminum tube to be manufactured. In addition, the outer peripheral surface of the welded portion of the aluminum tube 12 welded to each overlapped side edge portion is raised, but the aluminum tube 12 extends between the curved surfaces 21a and 21a of the hourglass rollers 21 and 21. By passing through, the swelling is also removed, and the unevenness generated on the outer peripheral surface of the aluminum tube 12 due to other causes is also eliminated.

また、鼓型ローラ21および21は、アルミニウム管12の
通過に際して、該アルミニウム管12の外周面に転接する
ために、アルミニウム管12の外周面を傷付けるおそれが
ない。しかも、鼓型ローラ21および21の外周面の摩耗も
少なく、アルミニウム管12を安定的に整形すことができ
る。Further, since the hourglass rollers 21 and 21 are in rolling contact with the outer peripheral surface of the aluminum tube 12 when passing through the aluminum tube 12, there is no possibility of damaging the outer peripheral surface of the aluminum tube 12. In addition, the outer peripheral surfaces of the hourglass rollers 21 and 21 have less wear, and the aluminum tube 12 can be shaped stably.

（発明の効果） 本発明の複合管用金属管の製造装置は、このように、
外型にて外径の大きい円管状に金属シートが成形された
場合にも、複数の鼓型ローラを有する整形機により所定
の外径に縮径される。従って、円管状に整形された金属
シートの各側縁部の溶接によりその溶接部が盛り上がっ
た状態であっても、その盛り上がりが解消され、また、
外周面の凹凸も解消されて所定の外径の金属管が安定的
に製造される。(Effect of the Invention) The apparatus for manufacturing a metal pipe for a composite pipe according to the present invention has the following features.
Even when a metal sheet is formed into a circular tube having a large outer diameter by the outer die, the diameter is reduced to a predetermined outer diameter by a shaping machine having a plurality of hourglass rollers. Therefore, even when the welded portion is raised by welding the side edges of the metal sheet shaped into a tubular shape, the raised portion is eliminated, and
The unevenness of the outer peripheral surface is also eliminated, so that a metal pipe having a predetermined outer diameter can be manufactured stably.

【図面の簡単な説明】[Brief description of the drawings]

第１図は本発明の円管製造装置の一実施例を主要部につ
いて示す正面図、第２図はその全体を概略的に示す側面
図、第３図は従来の複合管用金属管の製造装置を概略的
に示す構成図である。 10……アルミニウムシート、12……アルミニウム管、20
……整形機、21……鼓型ローラ、40……内型、51……外
型、52……ホーン。FIG. 1 is a front view showing a main part of an embodiment of a circular pipe manufacturing apparatus according to the present invention, FIG. 2 is a side view schematically showing the entire apparatus, and FIG. 3 is a conventional apparatus for manufacturing a metal pipe for a composite pipe. It is a block diagram which shows schematically. 10 …… Aluminum sheet, 12 …… Aluminum tube, 20
…… Shaping machine, 21… Drum roller, 40… Inner type, 51… Outer type, 52… Horn.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】金属管の少なくとも内周面に合成樹脂層が
被覆された複合管を製造する際に、内周面が合成樹脂層
にて被覆されるように、帯状の金属シートの各側縁部を
重ねて円管状に成形し、その各側縁部同士を溶接して金
属管を製造する複合管用金属管の製造装置であって、 内部に円筒状の空間が形成されており、その空間に帯状
の金属シートを通過させる際に内周面に該金属シートを
摺接させて、該金属シートの各側縁部同士を重ね合せた
円管状に成形する外型と、 該外型により重ね合わされた金属シートの各側縁部同士
を溶接する溶接機と、 該溶接機の金属シート搬送方向下流側に配設されてお
り、製造すべき金属管の外径にほぼ等しい外径の環状の
空間が形成されるように、軸方向に沿って円弧状に窪ん
だ湾曲面をそれぞれ有した複数の鼓型ローラを有する整
形機と、 を具備する複合管用金属管の製造装置。When manufacturing a composite tube in which at least the inner peripheral surface of a metal tube is covered with a synthetic resin layer, each side of a strip-shaped metal sheet is so coated that the inner peripheral surface is covered with the synthetic resin layer. An apparatus for manufacturing a metal pipe for a composite pipe in which the edges are overlapped and formed into a tubular shape, and the respective side edges are welded to each other to manufacture a metal pipe, wherein a cylindrical space is formed therein, An outer die that slides the metal sheet on the inner peripheral surface when the band-shaped metal sheet passes through the space, and forms a tubular shape in which the respective side edges of the metal sheet are overlapped with each other; A welding machine for welding the side edges of the superposed metal sheets to each other; an annular ring having an outer diameter substantially equal to the outer diameter of the metal pipe to be manufactured, which is disposed downstream of the welding machine in the metal sheet conveying direction. Each having a curved surface depressed in an arc shape along the axial direction so that a space is formed. Apparatus for manufacturing a composite pipe the metal tube having a, a shaping machine having a drum-type roller number.
JP2338382A 1990-11-30 1990-11-30 Equipment for manufacturing metal pipes for composite pipes Expired - Fee Related JP2862371B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2338382A JP2862371B2 (en) 1990-11-30 1990-11-30 Equipment for manufacturing metal pipes for composite pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2338382A JP2862371B2 (en) 1990-11-30 1990-11-30 Equipment for manufacturing metal pipes for composite pipes

Publications (2)

Publication Number Publication Date
JPH04200920A JPH04200920A (en) 1992-07-21
JP2862371B2 true JP2862371B2 (en) 1999-03-03

Family

ID=18317630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2338382A Expired - Fee Related JP2862371B2 (en) 1990-11-30 1990-11-30 Equipment for manufacturing metal pipes for composite pipes

Country Status (1)

Country Link
JP (1) JP2862371B2 (en)

Also Published As

Publication number Publication date
JPH04200920A (en) 1992-07-21

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