FR2139738A1 - Spherical valve housing - for plug valve moulded in plastics - Google Patents

Spherical valve housing - for plug valve moulded in plastics

Info

Publication number
FR2139738A1
FR2139738A1 FR7120063A FR7120063A FR2139738A1 FR 2139738 A1 FR2139738 A1 FR 2139738A1 FR 7120063 A FR7120063 A FR 7120063A FR 7120063 A FR7120063 A FR 7120063A FR 2139738 A1 FR2139738 A1 FR 2139738A1
Authority
FR
France
Prior art keywords
cavity
plastics
moulded
spherical
valve housing
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
Application number
FR7120063A
Other languages
French (fr)
Other versions
FR2139738B1 (en
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.)
GIR PI PLAST IND GIR SA
Original Assignee
GIR PI PLAST IND GIR SA
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 GIR PI PLAST IND GIR SA filed Critical GIR PI PLAST IND GIR SA
Priority to FR7120063A priority Critical patent/FR2139738A1/en
Priority to IT6873072A priority patent/IT959025B/en
Publication of FR2139738A1 publication Critical patent/FR2139738A1/en
Application granted granted Critical
Publication of FR2139738B1 publication Critical patent/FR2139738B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)

Abstract

In a mould for a spherical valve housing with an internal spherical cavity and a supply duct joining the cavity to the outside, a mobile pressure core projects into the centre of the cavity. A smooth surface is formed by allowing for the replenishment of material due to shrinkage. The pressure core forms a cone whose nose is near the centre of the mould cavity. The nose contains the supply duct. The mould cavity is carefully polished.
FR7120063A 1971-06-03 1971-06-03 Spherical valve housing - for plug valve moulded in plastics Granted FR2139738A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7120063A FR2139738A1 (en) 1971-06-03 1971-06-03 Spherical valve housing - for plug valve moulded in plastics
IT6873072A IT959025B (en) 1971-06-03 1972-05-31 MOLD FOR THE MOLDING OF A SPHERICAL SHUTTER PARTICULARLY FOR TAPS AND SHUTTER OBTAINED BY USING THE MOLD

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7120063A FR2139738A1 (en) 1971-06-03 1971-06-03 Spherical valve housing - for plug valve moulded in plastics

Publications (2)

Publication Number Publication Date
FR2139738A1 true FR2139738A1 (en) 1973-01-12
FR2139738B1 FR2139738B1 (en) 1976-03-19

Family

ID=9078033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7120063A Granted FR2139738A1 (en) 1971-06-03 1971-06-03 Spherical valve housing - for plug valve moulded in plastics

Country Status (2)

Country Link
FR (1) FR2139738A1 (en)
IT (1) IT959025B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437286A1 (en) * 1978-09-28 1980-04-25 Gen Electric INJECTION AND COMPRESSION THERMOPLASTIC RESIN MOLDING APPARATUS
WO1981000583A1 (en) * 1979-08-30 1981-03-05 Aptus Aps Foil holder for releasable attachment of foil parallel to a support and tooling for manufacture of the foil holder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437286A1 (en) * 1978-09-28 1980-04-25 Gen Electric INJECTION AND COMPRESSION THERMOPLASTIC RESIN MOLDING APPARATUS
WO1981000583A1 (en) * 1979-08-30 1981-03-05 Aptus Aps Foil holder for releasable attachment of foil parallel to a support and tooling for manufacture of the foil holder

Also Published As

Publication number Publication date
IT959025B (en) 1973-11-10
FR2139738B1 (en) 1976-03-19

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Legal Events

Date Code Title Description
CA Change of address
CD Change of name or company name
ST Notification of lapse