EP0565114A1 - Method for obtaining a valve body and valve body obtained through said method - Google Patents

Method for obtaining a valve body and valve body obtained through said method Download PDF

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Publication number
EP0565114A1
EP0565114A1 EP93105862A EP93105862A EP0565114A1 EP 0565114 A1 EP0565114 A1 EP 0565114A1 EP 93105862 A EP93105862 A EP 93105862A EP 93105862 A EP93105862 A EP 93105862A EP 0565114 A1 EP0565114 A1 EP 0565114A1
Authority
EP
European Patent Office
Prior art keywords
tube
bent portion
valve body
axis
obtaining
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Withdrawn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
EP93105862A
Other languages
German (de)
English (en)
French (fr)
Inventor
Achille Burocco
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0565114A1 publication Critical patent/EP0565114A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/20—Making machine elements valve parts
    • B21K1/24—Making machine elements valve parts valve bodies; valve seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like

Definitions

  • Free-flow valves may be obtained by casting (in different materials) or by means of electric welded sheet metal or tube, generally made of stainless steel, as shown in Fig. 1 attached hereto.
  • the sheet-metal or tube type comprises a fluid inlet tube (1), Fig. 1, a central body (2), Fig. 1, presenting a 45° inclination, with upper flange sealing seat to secure either a manual or a pneumatic control, and a fluid outlet tube (3), Fig. 1.
  • said central body (2), Fig. 1 is obtained by cutting (by means of shears, plasma, etc.) into the sheet metal the shaped hole whereon tube (3), Fig. 1, is to be welded.
  • the sheet metal is bowed to form a tube and then the joint is welded manually.
  • a tube may be used in place of metal sheet, and said shaped hole may be cut therein, by means of shears or plasma, with a 45° inclination. In the latter case, more complex tooling is necessary to work on tube, as compared to sheet metal.
  • tube (3) Fig. 1
  • the sheet metal is shaped, so that the inclined end may fit the shape of the hole of body (2), Fig. 1, it is then bowed to form a tube and then the joint is manually welded thereon.
  • body (2), Fig. 1 is joined to tube (3), Fig. 1, by means of manual welding following the complex intersection profile of the two inclined cylindrical shapes which are also of different dimensions.
  • a trimming and chamfering operation is to be carried out inside body (2), Fig. 1, next to the joint with tube (3), Fig. 1, to eliminate flash, sharp edges and uneveness.
  • Forming of tube (1), Fig. 1, is carried out by cutting, with a 45° inclination, a tube presenting suitable diameter, which is then welded on to body (2), Fig. 1.
  • Aim of the present invention is the innovating method for obtaining and assembling the structure of the valve body in issue.
  • Fig. 2 After cutting a suitable initial hole into a tube, the hole, with a 45° inclination, is obtained, by pressing, along with relevant bent portion 4 (Fig. 2).
  • Pressing is carried out by pushing punch A (Fig. 3) through the hole initially cut into body 2 (Fig. 3), the latter being inserted into dies B and C (Fig. 3).
  • Said bent portion 4 after a quick flattening of its edges 5 (Fig. 2), is ready to be placed coaxially to and welded by automatic welding with tube 3, Fig. 2.
  • a tube 1 is subsequently cut in an oblique manner with respect to said tube axis and is welded with a portion of the perimeter of body 2.
  • tube 3 starts directly from the tube which, after being cut with a 45° inclination, is ready to be welded by automatic welding on body 2, Fig. 2.
  • body 2 Fig. 2.
  • easy procedure can be followed in connection with tube 1, Fig. 2, as well.
  • a further advantage arising from said bent portion is represented by radius 6, Fig. 2, which forms automatically between said bent portion and said body, allowing for a more regular flow of the fluid; and, therefore, a smaller loss of pressure in respect to the conventional solution.
  • a further advantage of the present invention is represented by the evident improvement, from the point of view of both aesthetics and operation, arising from pressing and automatic welding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP93105862A 1992-04-10 1993-04-08 Method for obtaining a valve body and valve body obtained through said method Withdrawn EP0565114A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT92VC000001U IT229395Y1 (it) 1992-04-10 1992-04-10 Struttura elettrosaldata di corpo valvola a flusso libero.
ITVC920001U 1992-04-10

Publications (1)

Publication Number Publication Date
EP0565114A1 true EP0565114A1 (en) 1993-10-13

Family

ID=11423580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105862A Withdrawn EP0565114A1 (en) 1992-04-10 1993-04-08 Method for obtaining a valve body and valve body obtained through said method

Country Status (3)

Country Link
EP (1) EP0565114A1 (enrdf_load_html_response)
IT (1) IT229395Y1 (enrdf_load_html_response)
TW (1) TW235993B (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672798A4 (en) * 1993-10-06 1998-01-07 Toto Ltd CURVED SPOUT TAP USING TUBULAR MATERIAL AND MANUFACTURING METHOD.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736949A (en) * 1952-12-01 1956-03-06 William D Kraemer Method for forming pipe fittings
DE1045751B (de) * 1956-01-16 1958-12-04 Karl Eduard Hannemann Regelventil mit eingeschweisstem Steg
FR1217174A (fr) * 1958-12-02 1960-05-02 Procédé et dispositifs de fabrication de tubulures dans un tube de faible épaisseur
FR1271227A (fr) * 1960-07-29 1961-09-08 Perfectionnements à la fabrication des vannes et vannes en résultant
US4972577A (en) * 1988-12-12 1990-11-27 Dierikx Andreas P A Method for manufacturing gate valves

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736949A (en) * 1952-12-01 1956-03-06 William D Kraemer Method for forming pipe fittings
DE1045751B (de) * 1956-01-16 1958-12-04 Karl Eduard Hannemann Regelventil mit eingeschweisstem Steg
FR1217174A (fr) * 1958-12-02 1960-05-02 Procédé et dispositifs de fabrication de tubulures dans un tube de faible épaisseur
FR1271227A (fr) * 1960-07-29 1961-09-08 Perfectionnements à la fabrication des vannes et vannes en résultant
US4972577A (en) * 1988-12-12 1990-11-27 Dierikx Andreas P A Method for manufacturing gate valves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672798A4 (en) * 1993-10-06 1998-01-07 Toto Ltd CURVED SPOUT TAP USING TUBULAR MATERIAL AND MANUFACTURING METHOD.
US5829468A (en) * 1993-10-06 1998-11-03 Toto Ltd. Valve device using pipes and method of manufacturing it

Also Published As

Publication number Publication date
ITVC920001V0 (it) 1992-04-10
TW235993B (enrdf_load_html_response) 1994-12-11
IT229395Y1 (it) 1998-07-02
ITVC920001U1 (it) 1993-10-10

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19940414