JPS59113921A - Double square tube and its manufacturing device - Google Patents
Double square tube and its manufacturing deviceInfo
- Publication number
- JPS59113921A JPS59113921A JP22355582A JP22355582A JPS59113921A JP S59113921 A JPS59113921 A JP S59113921A JP 22355582 A JP22355582 A JP 22355582A JP 22355582 A JP22355582 A JP 22355582A JP S59113921 A JPS59113921 A JP S59113921A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- section
- inner tube
- outer tube
- square
- 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
Links
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
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
Abstract
Description
【発明の詳細な説明】 本発明は２重角管とその製造方法の改良に関する。[Detailed description of the invention] The present invention relates to an improvement in a double rectangular tube and a method for manufacturing the same.
従来の２重角管は、内管の周囲に鋼板などの外管用薄板
を地被させ、該薄板の端縁を重合させ、該重合部分を圧
接しながら溶接させ１ζものであって外管の接目が盛シ
あかって目立つのみならず、その後工程たる角形成形時
に、前記溶接部が剥離し易いなどの欠点があった。Conventional double square tubes are made by covering the inner tube with a thin plate for the outer tube, such as a steel plate, overlapping the edges of the thin plates, and welding the overlapping part while pressing. Not only are the seams conspicuous and conspicuous, but the welded portions tend to peel off during the subsequent corner forming process.
本発明は上記欠点を除き、外管の溶接部が目立つことな
く美麗であシ、かつ、角管成形工程中、溶接部の剥離が
生ずることのない２本角管とその製造方法を提供するこ
とを目的とする。The present invention eliminates the above-mentioned drawbacks and provides a double square tube in which the welded portion of the outer tube is not noticeable and beautiful, and the welded portion does not peel during the square tube forming process, and a method for manufacturing the same. The purpose is to
以下、本発明を図面に示す一実施例にもとづいて説明す
る。The present invention will be described below based on an embodiment shown in the drawings.
本発明の２重角管３ｏは第１図示の如く、断面四角形の
内管８１と外管８２とからな夛、これら内管３１と外管
３２とは密接され、かつ、−辺の中途部で同じ位置に重
なり合った突き合せ竿接部８１ａ、８２ａが設けられる
。As shown in the first figure, the double rectangular tube 3o of the present invention consists of an inner tube 81 and an outer tube 82 having a rectangular cross section. Butt rod contact portions 81a and 82a are provided overlapping each other at the same position.
次に、前記２重角管８０の製造のため、第２図ないし第
５図示の装置が用いられる。第２図において、先づ内管
８１は第１鋼帯コイルＡから繰シ出された鋼板Ａ０を徐
々に屈曲して断面円形の内管８１に近づけるため、複数
組の成形ロールｌｌａが配列された第１成形部１１と、
前記円形に近づいた鋼板両端縁の突き合せ部分を高周波
溶接機又は、アーク溶接機１２ａを用いて溶着する第１
溶接部１２と、溶接直後の内管８１を前記溶接部８１ａ
が安定するようその左右方向から抑圧挾持する一対のス
クイズロー／Ｉ／１８と、該内管８１の鹸化したビード
の余剰分を削シ取るためのナイフ１６ａを備えたビード
切除部１６と、該内管８１の直径を縮少させるため複数
組の絞りローラ１４ａを備えた第１縮シ部１４と、該内
管３１の真円度を矯正する第１定形部１５とを順次経て
製造される。Next, to manufacture the double square tube 80, the apparatus shown in FIGS. 2 to 5 is used. In FIG. 2, in order to gradually bend the steel plate A0 drawn out from the first steel strip coil A and bring it closer to the inner tube 81 having a circular cross section, the inner tube 81 has a plurality of sets of forming rolls lla arranged. a first molding section 11;
A first step of welding the abutting portions of both edges of the steel plate, which have become nearly circular, using a high frequency welder or an arc welder 12a.
The welded portion 12 and the inner tube 81 immediately after welding are connected to the welded portion 81a.
a pair of squeeze rows/I/18 that clamp the tube from the left and right sides to stabilize the tube, a bead cutting section 16 equipped with a knife 16a for scraping off the excess saponified beads of the inner tube 81; It is manufactured by sequentially passing through a first shrinking section 14 equipped with a plurality of sets of squeezing rollers 14a to reduce the diameter of the inner tube 81, and a first regular section 15 for correcting the roundness of the inner tube 31. .
次に、該内管８１の周囲に外管８２が僅かの隙間を有し
て被せられる。即ち、前記内管３１の流れに沿うよう移
動途中において、不銹銅からなる第２鋼帯コイルＢから
繰シ出された鋼帯Ｂユを前記内管８１に対して外接可能
な形状に屈曲させるための上ロール２１１、下ロール２
１２からなる第２成形部（第８図示）２１と、成形され
た外管を溶着させるため、ＴＩＧ溶融溶接機２２ａを備
えた第２溶接部２２と、溶接直後の外管３２を左右から
押しつけ挾持する第２スクイズロール２８と該外管８２
を内管８１と密着させるため外管８２の直径を縮少させ
るための複数組の絞シローラ２４ａからなる第２絞シ部
２４が順次設置される。Next, the outer tube 82 is placed around the inner tube 81 with a slight gap. That is, while moving along the flow of the inner tube 31, the steel strip B drawn out from the second steel strip coil B made of stainless steel is bent into a shape that can circumscribe the inner tube 81. Upper roll 211 and lower roll 2 to
In order to weld the molded outer tube to the second molded section 21 (shown in FIG. The second squeeze roll 28 and the outer tube 82 are held together.
A second squeezing part 24 consisting of a plurality of sets of squeezing rollers 24a is sequentially installed to reduce the diameter of the outer tube 82 in order to bring the outer tube 82 into close contact with the inner tube 81.
前記第２成形部２１の上ロール２１１の外周には外管８
２が外接される程度の円周溝２１１ａが形成され、下ロ
ール２１２の外周には前記外管８２を含む上ロール２１
１と外接可能な円周溝２１２ａが形成される。絞夛ロー
＃２４ａは本実施例では８組のロールが逐次相互間隔を
狭めて配置され外管８２が段階的に縮径される構造とな
っている。An outer tube 8 is provided on the outer periphery of the upper roll 211 of the second forming section 21.
A circumferential groove 211a is formed on the outer periphery of the lower roll 212, and the upper roll 21 including the outer tube 82 is formed on the outer periphery of the lower roll 212.
A circumferential groove 212a that can be circumscribed with 1 is formed. In this embodiment, the drawing roll #24a has a structure in which eight sets of rolls are arranged with successively narrowing the mutual interval, and the diameter of the outer tube 82 is reduced in stages.
前記第１溶接部の高周波溶接機１２ａと第２溶接部のＴ
ＩＧ溶−溶接機２２ａとは何れも管流れ方向に沿う同一
直線上に配置される。High frequency welding machine 12a of the first welding part and T of the second welding part
Both IG welding machines 22a are arranged on the same straight line along the pipe flow direction.
これら密着状噛に成形された内管、外管の組（第６図示
）は、更に流れ途中において、第２定形部２５において
押圧されて断面正方形に成形される。この第２定形部２
５は第５図示の如く、中央部に盲導入用の正方形の隙間
を設けて配置された４個の定形ロール２５ａによって管
８０は角形に成形されるが、これら定形ロール２５ａは
、前記内管外管の突き合せ溶接部８１ａ、８２ａが角形
−辺の中途部にくるような位相に配置される。このため
、溶接部分が折れ曲ることがないのは勿論角形成形の際
は突き合せ方向に加圧されるので、溶接部特に外管の溶
接部８２ａが剥離することがない。そして、外管溶接部
８２ａは溶融溶接が採用されているため、この部分が盛
シ上ることなく突き合せ溶接される。The pair of inner tube and outer tube (shown in the sixth figure) formed into a close-fitting mesh is further pressed in the second regular part 25 during the flow and is formed into a square cross section. This second regular part 2
As shown in Figure 5, a tube 80 is formed into a rectangular shape by four regular rolls 25a arranged with a square gap for blind introduction in the center, and these regular rolls 25a The butt welds 81a and 82a of the outer tube are arranged in such a phase that they are located halfway between the sides of the rectangle. Therefore, the welded portion does not bend, and since pressure is applied in the abutting direction when forming an angle, the welded portion, especially the welded portion 82a of the outer tube, does not peel off. Since fusion welding is employed for the outer tube welded portion 82a, this portion is butt-welded without being raised.
第７図は第２定形部の定形ロールの他の実施例を示すも
のであり、一対の鼓形ロール２５ｂからなる。該実施例
でも溶接部８１ａ、８２ａが角管の角部分に来ないよう
、鼓形ロールを左右方向に傾倒設置するなどの対策がと
られる。FIG. 7 shows another embodiment of the shaped rolls of the second shaped part, which consists of a pair of hourglass-shaped rolls 25b. In this embodiment as well, measures are taken to prevent the welded portions 81a and 82a from coming to the corner portions of the square tube, such as tilting the drum-shaped roll in the left-right direction.
本発明は以上の如く構成されるので、角管は美麗で溶接
部が目立す、成形中溶接部が剥離したシすることがなく
容易に製造できることとなった。Since the present invention is constructed as described above, the square tube is beautiful, the welded portion is conspicuous, and the welded portion does not peel off during forming, and can be easily manufactured.
第１図は本発明の一実施例を示す２重角管の側面図、第
２図はその製造装置の正面図、第８図は第２図の■−■
断面図、第４図は第２絞シ部の一部切欠拡大正面図、第
５図は第２図のｖ−■拡大断面図、第６図は第２図の■
−■拡大断面図、第７図は第２定形部の他の実施例の縦
断面図である。
Ａ・・・第１鋼板コイル、Ｂ・・・第２鋼板コイル、１
１・・・第１成形部、１２・・・第１溶接部、１４・・
・第１絞シ部、１５ ・・・第１定形部、２１・・・第
２成形部、２２・・・第２溶接部、２４・・・第２絞シ
部、２５−・第２定形部、８０・・・２重角管、８１・
・・内管、８２・・・外管
代理人 弁理士犬飼新平
特開昭５９−１１３９２１ （３）Fig. 1 is a side view of a double rectangular tube showing an embodiment of the present invention, Fig. 2 is a front view of its manufacturing equipment, and Fig. 8 is a side view of a double rectangular tube showing an embodiment of the present invention.
4 is a partially cutaway enlarged front view of the second diaphragm section, FIG. 5 is an enlarged sectional view taken along the line v-■ in FIG. 2, and FIG. 6 is an enlarged sectional view taken along
-■ Enlarged sectional view; FIG. 7 is a longitudinal sectional view of another embodiment of the second regular portion. A...First steel plate coil, B...Second steel plate coil, 1
1... First molded part, 12... First welded part, 14...
- First drawn part, 15 - First shaped part, 21 - Second molded part, 22 - Second welded part, 24 - Second drawn part, 25- - Second shaped part part, 80...double square tube, 81.
...Inner Control, 82...Outer Control Agent Patent Attorney Shinpei Inukai JP-A-59-113921 (3)
Claims (2)
らなシ、これら内管の一辺の中途部で同じ位置に突合せ
溶接部をもつ２重角管。(1) A double square tube consisting of an inner tube and an outer tube with a rectangular cross section that are close together, and a butt weld at the same position midway on one side of these inner tubes.
曲して断面円形の内管に近づける第１成形部と、成形さ
れた銅帯の突き合せ部分を溶着させる第１溶接部と、溶
接直後の内管を左右方向から挾んで溶接部を押しつける
第１スクイズロールと、該内管の鹸化したビードの余剰
分を削り取る第１ビード除去部と、前記内管を被覆する
ように第２銅帯コイルから繰り出された鋼帯を徐々に屈
曲して断面円形の外管に近づける 第２成形部と、該外
管を溶着させる第２溶接部と、溶接直後の該外管を左右
から押付は挾持する第２スクイズロールと、該外管の直
径を縮少させ内管と密着させる第２絞ル部と、これら円
管を加圧して角形に成形する第２定形部とを有する２重
管の製造装置。(2) A first forming part where the copper strip unwound from the first copper band coil is gradually bent to approach the inner tube having a circular cross section; and a first welding part where the butt portions of the formed copper strips are welded. a first squeeze roll that pinches the inner tube immediately after welding from the left and right sides and presses the welded part; a first bead removal section that scrapes off an excess of the saponified beads of the inner tube; 2. Gradually bend the steel strip unwound from the copper band coil to bring it closer to the outer tube with a circular cross section. A second forming part, a second welding part to weld the outer tube, and the outer tube immediately after welding from the left and right. The press has a second squeeze roll that clamps the outer tube, a second constriction section that reduces the diameter of the outer tube and brings it into close contact with the inner tube, and a second regular section that pressurizes and shapes these circular tubes into a square shape. Heavy pipe manufacturing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22355582A JPS59113921A (en) | 1982-12-20 | 1982-12-20 | Double square tube and its manufacturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22355582A JPS59113921A (en) | 1982-12-20 | 1982-12-20 | Double square tube and its manufacturing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59113921A true JPS59113921A (en) | 1984-06-30 |
| JPH0118808B2 JPH0118808B2 (en) | 1989-04-07 |
Family
ID=16799989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22355582A Granted JPS59113921A (en) | 1982-12-20 | 1982-12-20 | Double square tube and its manufacturing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59113921A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002024366A1 (en) * | 2000-09-25 | 2002-03-28 | Nakayama Corporation | Method of forming cold diametrally reducing roll for metal pipe and metal pipe formed by the method |
| CN101961826A (en) * | 2009-07-21 | 2011-02-02 | 奥林匹亚80有限责任公司 | A variable linear geometry machine for continuously forming square tubes |
| CN102773666A (en) * | 2012-07-12 | 2012-11-14 | 江苏省常熟环通实业有限公司 | Processing method for square tube of bearing upright post of automobile |
| CN103394546A (en) * | 2013-08-21 | 2013-11-20 | 武汉钢铁(集团)公司 | Production method for longitudinal welded pipe |
| US9839226B2 (en) | 2013-08-29 | 2017-12-12 | Sugiyo Co., Ltd. | Method for making kabayaki-like fish meat paste product |
| CN112474869A (en) * | 2020-10-31 | 2021-03-12 | 济钢集团有限公司 | Three-roller extrusion device for welding sharp-angled square steel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2736010C (en) | 2007-12-19 | 2014-08-19 | Altentech Power Inc. | Dryer for fuel material |
-
1982
- 1982-12-20 JP JP22355582A patent/JPS59113921A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002024366A1 (en) * | 2000-09-25 | 2002-03-28 | Nakayama Corporation | Method of forming cold diametrally reducing roll for metal pipe and metal pipe formed by the method |
| CN101961826A (en) * | 2009-07-21 | 2011-02-02 | 奥林匹亚80有限责任公司 | A variable linear geometry machine for continuously forming square tubes |
| CN102773666A (en) * | 2012-07-12 | 2012-11-14 | 江苏省常熟环通实业有限公司 | Processing method for square tube of bearing upright post of automobile |
| CN103394546A (en) * | 2013-08-21 | 2013-11-20 | 武汉钢铁(集团)公司 | Production method for longitudinal welded pipe |
| US9839226B2 (en) | 2013-08-29 | 2017-12-12 | Sugiyo Co., Ltd. | Method for making kabayaki-like fish meat paste product |
| CN112474869A (en) * | 2020-10-31 | 2021-03-12 | 济钢集团有限公司 | Three-roller extrusion device for welding sharp-angled square steel |
| CN112474869B (en) * | 2020-10-31 | 2023-02-28 | 济钢集团有限公司 | Three-roller extrusion device for welding sharp-angle square steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0118808B2 (en) | 1989-04-07 |
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