EP1332807B2 - Method and apparatus for making a branch collar in a pipe - Google Patents
Method and apparatus for making a branch collar in a pipe Download PDFInfo
- Publication number
- EP1332807B2 EP1332807B2 EP01660232A EP01660232A EP1332807B2 EP 1332807 B2 EP1332807 B2 EP 1332807B2 EP 01660232 A EP01660232 A EP 01660232A EP 01660232 A EP01660232 A EP 01660232A EP 1332807 B2 EP1332807 B2 EP 1332807B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- collar
- forming die
- diameter
- calibration mandrel
- 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 - Lifetime
Links
Images
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
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
Definitions
- the invention relates to a method as defined in the preamble of claim 1 (see e.g. JP-A-62 292 219 ) and an apparatus as defined in the preamble of claim 2 for making a branch collar or a neck in a pipe.
- the collar size in a cross-pipe direction D 2 is less than in a lengthwise direction D 1 .
- the collar size in a crosswise direction is less than a dimension D 2 ' of the tool used for forming the collar.
- a body 1 of the apparatus comprises a cylindrical element provided with a lengthwise hole of rectangular cross-section, which is fitted with an elongated wedge 2 and its base member 5 whose end 4 can be engaged by a drive unit for operating the wedge 2 lengthwise of the body 1.
- the body 1 has its cylindrical surface formed with a substantially radial hole or recess 9.
- the hole or recess 9 can also be set at a desired angle within the range of 90°-45° with respect to the center axis of the body 1.
- the most common pipe branches are perpendicular and the most common collars or necks are perpendicular, whereby the angle is 90°.
- the bottom of a forming die 3 is in contact with a wedge surface 14 of the wedge 2 as the forming die 3 is positioned in the hole or recess 9.
- the wedge 2 is operated by pulling, but it can also be operated by pushing. It is also conceivable to employ two wedges which are movable in directions opposite to each other.
- a pipe to be collared is pushed over the body 1, such that a preformed hole in the pipe sets in alignment above the hole or recess 9 and the forming die 3 present in the latter.
- said forming die 3 is driven upwards to force the pipe wall outward from around the preformed hole.
- the pipe wall stretches around the rim of the preformed hole and forms a branching neck or collar, having its shape and direction consistent with those of the emerging forming die 3.
- the diameter of a tool depicted in fig. 3 is dimensioned for a loose fit in a pipe so as not to leave abrasion marks on the inside wall of the pipe.
- the forming die 3 fitted in the recess or hole 9 may not be of the size to cause marks on the inside wall of the pipe. This problem, which is about a die causing a mark or a scratch, is particularly evident when making a branch whose size is equal to the pipe itself.
- the neck or collar produced by means of the above-described forming die 3 is elliptical or oval.
- the collar diameter D 2 is smaller than the inner pipe diameter D as a result of the dimension D 2 ' of the forming die 3, as well as smaller than the diameter D 2 ' of the forming die 3 as a result of internal shaping stresses and elasticity of the material.
- This ellipticity of a collar can be rectified by using a special calibration mandrel 11 for finishing the collar.
- the calibration mandrel 11 is designed for axial movement co-directionally with the center line of the hole 9 present in the collaring tool and it can be pressed against the forming die 3 with a force sufficient for pushing the forming die 3 in front of it back into the hole 9 and stretching the collar to the dimensions of its own size.
- Diameters D 3 (crosswise) and D 4 (lengthwise) of the calibration mandrel 11, as well as those D 1 ' (lengthwise) and D 2 ' (crosswise) of the forming die 3 are interrelated, depending on the dimensions and qualities (elasticity) of a pipe to be worked and a desired final result, particularly whether it is desirable to have the inner diameter D 2 of a collar comply with the inner pipe diameter or whether it is desirable to provide the collar and the pipe with equal outer diameters. If the outer diameters are to be equal, the lengthwise diameter D 1 ' of the forming die 3 is dimensioned to provide the collar with a diametrical size D 1 which is so large that the corresponding outer diameter of the collar is slightly oversized.
- the calibration mandrel 11 is dimensioned in such a way that its crosswise diameter D 3 stretches the sides of the collar to a size matching the outer pipe diameter and its lengthwise diameter D 4 supports the collar in the longitudinal direction D 1 , allowing the diameter co-directional therewith to be reduced by the extent of an oversize produced by the die 3.
- a reduction of size occurring co-directionally with the diameter D 1 ' during the calibration process facilitates essentially a lateral stretching of the crosswise diameter D 2 .
- the calibration mandrel 11 has its pipe-entering end 12 designed in an arched shape for pushing its flanks 13 substantially closer to the center line of a pipe than the final position of the top end of the forming die 3. As pointed out above, the calibration mandrel 11 has a crosswise diameter D 3 which exceeds its lengthwise diameter D 4 . The mandrel 11 has an outer surface which is slightly conical.
- the calibration mandrel 11 has a dual function. It pushes the forming die 3 back to the bottom of the hole or recess 9 and at the same time its crosswise measurement disparity rectifies the dimensional error of the forming die 3, which results from the fact that a forming die, which fits inside a pipe, is not capable of producing a diametrical size sufficiently large in crosswise direction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Forging (AREA)
- Adornments (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK01660232T DK1332807T4 (da) | 2002-02-04 | 2002-02-04 | Fremgangsmåde og apparat til fremstilling af en afgreningskrave i et rör |
ES01660232T ES2214391T5 (es) | 2002-02-04 | 2002-02-04 | Procedimiento y aparato para la fabricacion de un manguito de derivacion en una tuberia. |
AT01660232T ATE258472T1 (de) | 2002-02-04 | 2002-02-04 | Verfahren und vorrichtung zum herstellen von abzweigkragen an rohren |
DE20220397U DE20220397U1 (de) | 2002-02-04 | 2002-02-04 | Vorrichtung zur Herstellung eines Abzweigkragens in einem Rohr |
TR2004/00278T TR200400278T4 (tr) | 2002-02-04 | 2002-02-04 | Bir boruda kol sıkma bileziği yapmak için yöntem ve cihaz. |
DE60200192T DE60200192T3 (de) | 2002-02-04 | 2002-02-04 | Verfahren und Vorrichtung zum Herstellen von Abzweigkragen an Rohren |
PT01660232T PT1332807E (pt) | 2002-02-04 | 2002-02-04 | Metodo e aparelho para fazer um colar de derivacao num tubo |
EP01660232A EP1332807B2 (en) | 2002-02-04 | 2002-02-04 | Method and apparatus for making a branch collar in a pipe |
BRPI0300276-4A BR0300276B1 (pt) | 2002-02-04 | 2003-02-03 | método para dobrar os aros de um orifìcio de tubulação e aparelho para formação de colar. |
AU2003200324A AU2003200324B2 (en) | 2002-02-04 | 2003-02-03 | Method and apparatus for making a branch collar in a pipe |
MXPA03001044A MXPA03001044A (es) | 2002-02-04 | 2003-02-03 | Metodo y aparato para hacer un collarin de ramificacion en un tubo. |
CN03102111.5A CN1264620C (zh) | 2002-02-04 | 2003-02-08 | 用于在管道上制造旁通环口的方法和设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01660232A EP1332807B2 (en) | 2002-02-04 | 2002-02-04 | Method and apparatus for making a branch collar in a pipe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1332807A1 EP1332807A1 (en) | 2003-08-06 |
EP1332807B1 EP1332807B1 (en) | 2004-01-28 |
EP1332807B2 true EP1332807B2 (en) | 2008-06-04 |
Family
ID=8183639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01660232A Expired - Lifetime EP1332807B2 (en) | 2002-02-04 | 2002-02-04 | Method and apparatus for making a branch collar in a pipe |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1332807B2 (da) |
CN (1) | CN1264620C (da) |
AT (1) | ATE258472T1 (da) |
AU (1) | AU2003200324B2 (da) |
BR (1) | BR0300276B1 (da) |
DE (2) | DE20220397U1 (da) |
DK (1) | DK1332807T4 (da) |
ES (1) | ES2214391T5 (da) |
MX (1) | MXPA03001044A (da) |
PT (1) | PT1332807E (da) |
TR (1) | TR200400278T4 (da) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006029124B4 (de) * | 2006-06-22 | 2009-09-10 | Benteler Automobiltechnik Gmbh | Auskragen von Blechteilen |
CN101947572B (zh) * | 2010-09-14 | 2012-05-30 | 江阴中南重工股份有限公司 | 一种三通管件的瓦片式生产方法 |
CN102029313A (zh) * | 2010-11-25 | 2011-04-27 | 江阴中南重工股份有限公司 | 一种金属制集合管向下拔制的生产方法 |
CN108421844B (zh) * | 2018-05-24 | 2024-03-01 | 浙江高翔工贸有限公司 | 一种铜管三通的拉伸装置 |
CN108906901B (zh) * | 2018-06-20 | 2020-05-22 | 江阴市天柠管道有限公司 | 弧形集合管生产工艺 |
CN110523852B (zh) * | 2019-09-16 | 2024-08-20 | 山东金润德新材料科技股份有限公司 | 一种不锈钢双卡压可调直接头及三通头生产模具 |
JPWO2022138282A1 (da) * | 2020-12-22 | 2022-06-30 | ||
FI129931B (fi) * | 2021-01-15 | 2022-11-15 | Leo Larikka | Menetelmä T-haaroitusputken mittojen kalibroimiseksi ja menetelmää soveltava laite |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62292219A (ja) | 1986-06-12 | 1987-12-18 | Mitsubishi Heavy Ind Ltd | 分岐管継手の製造法 |
JP2525451B2 (ja) * | 1988-04-05 | 1996-08-21 | 鋼管加工株式会社 | 枝管成形方法 |
CH687007A5 (de) | 1992-03-30 | 1996-08-30 | Efes Tex Ag | Vorrichtung und Verfahren zum Aushalsen eines Rohres. |
-
2002
- 2002-02-04 DK DK01660232T patent/DK1332807T4/da active
- 2002-02-04 EP EP01660232A patent/EP1332807B2/en not_active Expired - Lifetime
- 2002-02-04 DE DE20220397U patent/DE20220397U1/de not_active Expired - Lifetime
- 2002-02-04 PT PT01660232T patent/PT1332807E/pt unknown
- 2002-02-04 DE DE60200192T patent/DE60200192T3/de not_active Expired - Lifetime
- 2002-02-04 TR TR2004/00278T patent/TR200400278T4/xx unknown
- 2002-02-04 ES ES01660232T patent/ES2214391T5/es not_active Expired - Lifetime
- 2002-02-04 AT AT01660232T patent/ATE258472T1/de not_active IP Right Cessation
-
2003
- 2003-02-03 BR BRPI0300276-4A patent/BR0300276B1/pt not_active IP Right Cessation
- 2003-02-03 MX MXPA03001044A patent/MXPA03001044A/es active IP Right Grant
- 2003-02-03 AU AU2003200324A patent/AU2003200324B2/en not_active Ceased
- 2003-02-08 CN CN03102111.5A patent/CN1264620C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE60200192T2 (de) | 2004-07-15 |
CN1436614A (zh) | 2003-08-20 |
DE60200192D1 (de) | 2004-03-04 |
ES2214391T3 (es) | 2004-09-16 |
BR0300276A (pt) | 2003-09-09 |
AU2003200324A1 (en) | 2003-08-21 |
BR0300276B1 (pt) | 2011-10-04 |
DE60200192T3 (de) | 2009-09-03 |
CN1264620C (zh) | 2006-07-19 |
AU2003200324B2 (en) | 2007-06-14 |
DE20220397U1 (de) | 2003-07-10 |
ES2214391T5 (es) | 2008-12-16 |
PT1332807E (pt) | 2004-04-30 |
ATE258472T1 (de) | 2004-02-15 |
DK1332807T3 (da) | 2004-03-15 |
EP1332807A1 (en) | 2003-08-06 |
TR200400278T4 (tr) | 2004-03-22 |
EP1332807B1 (en) | 2004-01-28 |
MXPA03001044A (es) | 2004-08-11 |
DK1332807T4 (da) | 2008-07-21 |
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