EP2522440A1 - Procédé pour la production de joints tubulaires pour l'alimentation de liquides et joints obtenus avec ledit procédé - Google Patents

Procédé pour la production de joints tubulaires pour l'alimentation de liquides et joints obtenus avec ledit procédé Download PDF

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Publication number
EP2522440A1
EP2522440A1 EP12162981A EP12162981A EP2522440A1 EP 2522440 A1 EP2522440 A1 EP 2522440A1 EP 12162981 A EP12162981 A EP 12162981A EP 12162981 A EP12162981 A EP 12162981A EP 2522440 A1 EP2522440 A1 EP 2522440A1
Authority
EP
European Patent Office
Prior art keywords
pipe
section
joint
tubular
joints
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.)
Withdrawn
Application number
EP12162981A
Other languages
German (de)
English (en)
Inventor
Gaetano Donatiello
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.)
DIEFFECI Srl
Original Assignee
DIEFFECI Srl
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 DIEFFECI Srl filed Critical DIEFFECI Srl
Publication of EP2522440A1 publication Critical patent/EP2522440A1/fr
Withdrawn legal-status Critical Current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
    • B21C37/15—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
    • B21C37/296—Making branched pieces starting from strip material; Making branched tubes by securing a secondary tube in an opening in the undeformed wall of a principal tube

Definitions

  • the present invention relates to a perfected method for the production of tubular joints for the feeding of liquids, particularly but not exclusively joints used in panel radiators.
  • the invention also relates to the joints obtained with an embodiment of this method.
  • T T- or "L”-shaped tubular joints for the feeding of liquids, are obtained starting from a first section of pipe, which is centrally blown, by means of pressing, to define a spherical section having a larger diameter.
  • a second section of pipe having a larger diameter with respect to that of the first section, is edged at one end, by pressing, and bevelled at the opposite end: after which said second section of pipe, in correspondence with the bevelled end, is welded to the central spherical part of the first section (central in the case of a "T"-joint, lateral in the case of an "L"-joint).
  • the piece thus obtained (for example a "T"-joint) is finally processed with a machine tool to obtain: the pass-through communication hole in the spherical part - in correspondence with the welding - the bevels at the ends, and internal threading of the second section of pipe.
  • the formation of the spherical part on the first section of pipe has the function of defining the welding surface of the bevelled end of the section of pipe, which has a larger diameter than that of the first section.
  • a general objective of the present invention is to provide a method for the production of tubular joints for liquids - "T"- or "L"-shaped, for example, - which is simpler and consequently more economical with respect to the known methods.
  • a known joint of the "T"-type is produced starting from a first section of pipe 20 which, by means of pressing, is centrally blown to form a spherical section or part 21 having a larger diameter than that of the pipe 20 ( figures 1 and 2 ).
  • a second section of pipe 22, having a larger diameter than that of the first section 20, is edged as in 23, by means of pressing, at one end, and bevelled as in 24 at the opposite end ( figures 3 and 4 ).
  • the section of pipe 22 is then welded, as in 25, in correspondence with the bevelled end as in 24, at the central spherical part 21 of the first section 20.
  • the piece thus obtained is then processed with a machine tool to obtain: a pass-through hole 26 in the spherical part 21, for communication between 20 and 22, bevels 27 at the free ends of the section of pipe 20, and a threading on the inner surface 28 of the section of pipe 22 ( figures 5 and 6 ).
  • a tubular joint for liquids according to the invention is produced in a single piece, as illustrated in figures 7-15 of the drawings.
  • the joint is produced in a single piece of plate sheared from a suitable metallic strip, deep-drawn, pressed, welded and processed with a machine tool.
  • a hewed piece 30 is sheared from a metallic strip N, from whose longitudinal edges two arched sections 31 extend.
  • a first section of pipe 32 is obtained from the same hewed piece 30, by means of deep-drawing operations, also thanks to the presence of the necessary additional material, provided by the opposing arched sections 31, which almost completely withdraw ( figures 7 and 8 ).
  • An edge 38 is also obtained by pressing.
  • a part 33 (with a substantially semi-circular transversal section) is then defined from the semi-processed piece of figure 8 , by means of other forming operations, with flaps 34, of a second section of pipe 35, which is then completed by the shearing and bending of the above flaps 34, and reciprocal abutment of the longitudinal edges 36, which are welded to each other as in 37 ( figures 9 and 10 ).
  • the piece of figure 10 is then processed with a machine tool to produce a threading in the area 39 and bevels 40 at the free ends of the section 35 ( figure 11 ).
  • Figures 12-14 are perspective views illustrating examples of "T"-shaped and “L”-shaped joints R, produced according to the characteristic method of the invention, wherein the "T"-shaped joint of figure 13 has a central spherical part having a larger diameter (contrary to that illustrated in figures 10 and 11 ).
  • the "L"-shaped joints of figures 12 and 14 are provided with a welded end stopper 41, and are respectively lacking in and provided with the central spherical part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP12162981A 2011-05-10 2012-04-03 Procédé pour la production de joints tubulaires pour l'alimentation de liquides et joints obtenus avec ledit procédé Withdrawn EP2522440A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000801A ITMI20110801A1 (it) 2011-05-10 2011-05-10 Metodo per la realizzazione di raccordi tubolari per l'alimentazione di liquidi e raccordi ottenuti con detto metodo

Publications (1)

Publication Number Publication Date
EP2522440A1 true EP2522440A1 (fr) 2012-11-14

Family

ID=44555081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12162981A Withdrawn EP2522440A1 (fr) 2011-05-10 2012-04-03 Procédé pour la production de joints tubulaires pour l'alimentation de liquides et joints obtenus avec ledit procédé

Country Status (2)

Country Link
EP (1) EP2522440A1 (fr)
IT (1) ITMI20110801A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103752668A (zh) * 2014-02-11 2014-04-30 中航飞机股份有限公司西安飞机分公司 一种三通半管零件的成形方法和复合冲压模具
CN105710216A (zh) * 2016-04-01 2016-06-29 中航飞机股份有限公司西安飞机分公司 一种三通半管冲压模具及使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL276265A (fr) *
US1830262A (en) * 1928-09-21 1931-11-03 Rockwood Sprinkler Co Massachusetts Method of making pipe fittings
JPS5853329A (ja) * 1981-09-26 1983-03-29 Sumitomo Metal Ind Ltd ワンシ−ムｔ形管継手の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL276265A (fr) *
US1830262A (en) * 1928-09-21 1931-11-03 Rockwood Sprinkler Co Massachusetts Method of making pipe fittings
JPS5853329A (ja) * 1981-09-26 1983-03-29 Sumitomo Metal Ind Ltd ワンシ−ムｔ形管継手の製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103752668A (zh) * 2014-02-11 2014-04-30 中航飞机股份有限公司西安飞机分公司 一种三通半管零件的成形方法和复合冲压模具
CN105710216A (zh) * 2016-04-01 2016-06-29 中航飞机股份有限公司西安飞机分公司 一种三通半管冲压模具及使用方法

Also Published As

Publication number Publication date
ITMI20110801A1 (it) 2012-11-11

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