GB701547A - Improvements in or relating to methods and apparatus for making branched pipe fittings - Google Patents

Improvements in or relating to methods and apparatus for making branched pipe fittings

Info

Publication number
GB701547A
GB701547A GB1981851A GB1981851A GB701547A GB 701547 A GB701547 A GB 701547A GB 1981851 A GB1981851 A GB 1981851A GB 1981851 A GB1981851 A GB 1981851A GB 701547 A GB701547 A GB 701547A
Authority
GB
United Kingdom
Prior art keywords
blank
plunger
die cavity
tool block
cavity
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
Application number
GB1981851A
Inventor
Charles Bernard Stanton
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1981851A priority Critical patent/GB701547A/en
Publication of GB701547A publication Critical patent/GB701547A/en
Expired legal-status Critical Current

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
    • B21C37/15—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
    • B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

701,547. Making pipe fittings. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 22, 1952 [Aug. 22, 1951], No. 19818/51. Addition to 700,855. Classes 83 (2) and 83 (4) A method of forming a branched pipe fitting from a tubular blank by compressing said blank lengthwise in a main die cavity and applying pressure to a filler material to cause part of the blank to flow into at least one cavity branching off the main die cavity and supporting the whole of the blank throughout the forming operation as described in the parent Specification is characterized in that the portion of the blank not in contact with the wall of the main die cavity is supported throughout the forming operation by a plunger controlled by a profiled moving guide member. The operation and apparatus described in the parent Specification is modified in that the main die cavity 7 is formed by a split die 5a, 5b the die 5a containing a branch cavity 6. The tubular blank 1 is engaged by side plungers 8 having extensions 9 engaging an inclined guide 10 carried by a guide block 11 extending from the upper tool block 12 of the press. Lowering and raising the tool block moves the plungers inwards and outwards respectively. Distention of the tubular blank during the forming process is caused by high pressure fluid fed into the chambers 14 of containers 15 and the fluid passes into the blank through bores 16 in each plunger 8. The branch 3 of the fitting is supported during its formation by a support plunger 17 the receding movement of which is controlled by a wedge-shaped guide member 18 secured to the upper tool block 12. The movement of the upper tool block and thus the movement of the side plungers 8 and the support plunger 17 is synchronized with the release of the pressure fluid. The side plungers may be operated hydraulically ou pneumatically and the filler material may be water, soft metal or thermoplastic material.
GB1981851A 1951-08-22 1951-08-22 Improvements in or relating to methods and apparatus for making branched pipe fittings Expired GB701547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1981851A GB701547A (en) 1951-08-22 1951-08-22 Improvements in or relating to methods and apparatus for making branched pipe fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1981851A GB701547A (en) 1951-08-22 1951-08-22 Improvements in or relating to methods and apparatus for making branched pipe fittings

Publications (1)

Publication Number Publication Date
GB701547A true GB701547A (en) 1953-12-30

Family

ID=10135746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1981851A Expired GB701547A (en) 1951-08-22 1951-08-22 Improvements in or relating to methods and apparatus for making branched pipe fittings

Country Status (1)

Country Link
GB (1) GB701547A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132125A (en) * 1982-12-14 1984-07-04 Vitkovice Zdarske Strojirny A Tool for fluid-forming of workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132125A (en) * 1982-12-14 1984-07-04 Vitkovice Zdarske Strojirny A Tool for fluid-forming of workpieces

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