BRPI0404120A - Válvula de retenção - Google Patents

Válvula de retenção

Info

Publication number
BRPI0404120A
BRPI0404120A BR0404120-8A BRPI0404120A BRPI0404120A BR PI0404120 A BRPI0404120 A BR PI0404120A BR PI0404120 A BRPI0404120 A BR PI0404120A BR PI0404120 A BRPI0404120 A BR PI0404120A
Authority
BR
Brazil
Prior art keywords
valve body
plastic material
stroke
mold
stopping
Prior art date
Application number
BR0404120-8A
Other languages
English (en)
Inventor
Lorenzo Lorenzin
Original Assignee
Main Group Spa
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 Main Group Spa filed Critical Main Group Spa
Publication of BRPI0404120A publication Critical patent/BRPI0404120A/pt

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
    • B29C45/20—Injection nozzles
    • B29C45/23—Feed stopping equipment
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/581—Closure devices for pour holes
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/30—Flow control means disposed within the sprue channel, e.g. "torpedo" construction
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76545—Flow rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Check Valves (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Forging (AREA)

Abstract

"VáLVULA DE RETENçãO". Uma válvula de retenção, particularmente para moldes de máquinas de moldagem de plástico, compreendendo um corpo de válvula (11) que é acomodado em uma sede (12) complementarmente configurada de um molde (13) para material plástico (14); o corpo de válvula (11) é provido com um canal de injeção (15) no interior do qual um elemento de controle de fluxo (16) pode flutuar livremente entre uma porta (17) para introdução do material plástico (14) e dispositivos de contenção (18) que são adequados para prevenir seu escape a partir do corpo de válvula (11) e formam aberturas de passagem (21) para o material plástico (14), o elemento de controle de fluxo (16) sendo adaptado para ser empurrado pela pressão do material plástico (14) no canal de injeção (15). A sede (12) do corpo de válvula (11) tem um volume de curso (22) para um curso translacional reversível do corpo de válvula (11) desde o interior para o exterior; o corpo de válvula (11) tem uma porção (23) que é adequada para apoiar contra os primeiros dispositivos (25) para parar o curso rumo ao exterior do dito molde (13) e contra segundos dispositivos (26) para parar o curso rumo ao interior do molde (13). O curso translacional desde o interior para o exterior limpa uma câmara de expansão (24) para o material plástico injetado (14).
BR0404120-8A 2003-12-17 2004-09-30 Válvula de retenção BRPI0404120A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000302A ITPD20030302A1 (it) 2003-12-17 2003-12-17 Valvola di non ritorno, particolarmente per stampi di macchine per lo stampaggio di materia plastica

Publications (1)

Publication Number Publication Date
BRPI0404120A true BRPI0404120A (pt) 2005-08-23

Family

ID=34509491

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0404120-8A BRPI0404120A (pt) 2003-12-17 2004-09-30 Válvula de retenção

Country Status (8)

Country Link
EP (1) EP1543936B1 (pt)
KR (1) KR20050061282A (pt)
CN (2) CN2767114Y (pt)
AT (1) ATE365621T1 (pt)
BR (1) BRPI0404120A (pt)
DE (1) DE602004007227D1 (pt)
IT (1) ITPD20030302A1 (pt)
TW (1) TW200521362A (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2928578B1 (fr) * 2008-03-11 2012-03-09 Faurecia Interieur Ind Piece d'equipement de vehicule automobile, et procede de fabrication associe
EP2360002A1 (en) * 2010-02-11 2011-08-24 Sika Technology AG Baffle or reinforcer with fixation mechanism
KR101721421B1 (ko) 2015-05-19 2017-03-31 (주)삼성유압기계 2축 연신 블로우 성형장치 및 방법
WO2017142352A1 (ko) * 2016-02-19 2017-08-24 (주) 디케이 문교 체크밸브가 설치된 의치 성형용 플라스크 및 이종재질의 의치 성형용 플라스크를 사용한 의치보조물 제조방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374502A (en) * 1965-10-12 1968-03-26 Osley & Whitney Inc Sprue bushing and nozzle assembly
CA921666A (en) * 1969-03-06 1973-02-27 Semperit Osterreichisch-Amerikanische Gummiwerke Aktiengesellschaft Injection mould having a closure in the injection channel
JPS4958156A (pt) * 1972-10-06 1974-06-05
US4213751A (en) * 1978-06-06 1980-07-22 The Continental Group, Inc. Valve gate mechanism for injection molding

Also Published As

Publication number Publication date
KR20050061282A (ko) 2005-06-22
ATE365621T1 (de) 2007-07-15
TW200521362A (en) 2005-07-01
EP1543936B1 (en) 2007-06-27
EP1543936A2 (en) 2005-06-22
DE602004007227D1 (de) 2007-08-09
CN1629526A (zh) 2005-06-22
EP1543936A3 (en) 2006-03-08
ITPD20030302A1 (it) 2005-06-18
CN2767114Y (zh) 2006-03-29

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 5A, 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.