IT1232661B - Procedimento e apparecchio di stampaggio e colata utilizzando matrici a bocchello aventi superfici di stampaggio parametriche - Google Patents

Procedimento e apparecchio di stampaggio e colata utilizzando matrici a bocchello aventi superfici di stampaggio parametriche

Info

Publication number
IT1232661B
IT1232661B IT8947700A IT4770089A IT1232661B IT 1232661 B IT1232661 B IT 1232661B IT 8947700 A IT8947700 A IT 8947700A IT 4770089 A IT4770089 A IT 4770089A IT 1232661 B IT1232661 B IT 1232661B
Authority
IT
Italy
Prior art keywords
molding
parametric
dies
bushing
casting equipment
Prior art date
Application number
IT8947700A
Other languages
English (en)
Other versions
IT8947700A0 (it
Inventor
Jeffrey M Kingsbury
David P Spector
Original Assignee
Pilkington Visioncare Holdings
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
Priority claimed from US07/163,308 external-priority patent/US4839110A/en
Priority claimed from US07/163,771 external-priority patent/US4874561A/en
Application filed by Pilkington Visioncare Holdings filed Critical Pilkington Visioncare Holdings
Publication of IT8947700A0 publication Critical patent/IT8947700A0/it
Application granted granted Critical
Publication of IT1232661B publication Critical patent/IT1232661B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/0048—Moulds for lenses
    • B29D11/00528—Consisting of two mould halves joined by an annular gasket
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0055—Moulds or cores; Details thereof or accessories therefor with incorporated overflow cavities
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
IT8947700A 1988-03-02 1989-03-01 Procedimento e apparecchio di stampaggio e colata utilizzando matrici a bocchello aventi superfici di stampaggio parametriche IT1232661B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/163,308 US4839110A (en) 1988-03-02 1988-03-02 Method of molding using gated dies
US07/163,771 US4874561A (en) 1988-03-03 1988-03-03 Method for designing parametric molding apparatus

Publications (2)

Publication Number Publication Date
IT8947700A0 IT8947700A0 (it) 1989-03-01
IT1232661B true IT1232661B (it) 1992-03-02

Family

ID=26859528

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8947700A IT1232661B (it) 1988-03-02 1989-03-01 Procedimento e apparecchio di stampaggio e colata utilizzando matrici a bocchello aventi superfici di stampaggio parametriche

Country Status (8)

Country Link
JP (1) JPH01316226A (it)
AU (1) AU3089989A (it)
DE (1) DE3906564A1 (it)
FR (1) FR2628031B1 (it)
GB (2) GB2219241A (it)
IT (1) IT1232661B (it)
LU (1) LU87465A1 (it)
NL (1) NL8900499A (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160749A (en) * 1990-10-30 1992-11-03 Minnesota Mining And Manufacturing Company Three piece mold assembly for making an ocular device
JP2545311Y2 (ja) * 1990-10-30 1997-08-25 ミネソタ マイニング アンド マニュファクチャリング カンパニー 眼科用具製造用成形型組立体
US5137441A (en) * 1990-10-30 1992-08-11 Minnesota Mining And Manufacturing Company Mold assembly for making an ocular lens blank
JPH11114979A (ja) * 1997-10-15 1999-04-27 Menicon Co Ltd 眼用レンズ材料の成形装置及びそれを用いた成形方法
FR2790706B1 (fr) * 1999-03-08 2001-06-08 Essilor Int Moule en trois parties pour la fabrication d'articles oculaires en materiau polymere transparent
EP1226022A1 (en) * 1999-11-04 2002-07-31 Concepcionlicence AG Device for the production of optical lenses of polymerizable material
DE10066272B4 (de) * 2000-10-02 2009-01-29 Kraussmaffei Technologies Gmbh Verfahren und Vorrichtung zum Herstellen von dickwandigen Formteilen
DE102007037204B4 (de) 2007-08-07 2020-11-12 Docter Optics Se Verfahren zum Herstellen eines optischen Linsenelementes, insbesondere einer Scheinwerferlinse für einen Kraftfahrzeugscheinwerfer sowie Charge von hintereinander hergestellten Scheinwerferlinsen
JP5788231B2 (ja) * 2011-06-10 2015-09-30 Hoya株式会社 レンズ製造方法、及び眼鏡レンズ製造システム

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650692A (en) * 1944-11-28 1951-02-28 Teksun Inc Injection mold for use in molding opthalmic lenses and other articles
GB611432A (en) * 1946-04-26 1948-10-29 James Mitchell Anderson A new or improved means for moulding ophthalmic contact lenses from plastics
US2890486A (en) * 1955-08-29 1959-06-16 American Optical Corp Mold for producing lens of any shape from a polymerizable material
GB796825A (en) * 1955-10-04 1958-06-18 American Optical Corp Improvements in or relating to casting devices for optical elements
GB915523A (en) * 1959-01-28 1963-01-16 Combined Optical Ind Ltd Improvements in or relating to casting
FR1362588A (fr) * 1963-04-23 1964-06-05 Morvan Soc Perfectionnement au traitement thermique, plus spécialement à la vulcanisation, insitu, de masses élastiques et notamment de joints d'étanchéité
US3423488A (en) * 1966-05-11 1969-01-21 Ppg Industries Inc Process for casting resinous lenses in thermoplastic cast replica molds
US3605195A (en) * 1970-08-24 1971-09-20 Charles D Campbell Mold assembly for casting plastic optical lenses
GB1366927A (en) * 1970-12-14 1974-09-18 Goodyear Tire & Rubber Method of moulding plastics materials under pressure
IL39580A (en) * 1971-06-04 1975-03-13 Ashland Optical Corp Multiple molding of plastic optical lenses
DE2308144A1 (de) * 1973-02-19 1974-08-22 Battelle Institut E V Kontakklinse
US3881683A (en) * 1973-11-29 1975-05-06 American Optical Corp Gasket for lens mold
JPS5225651A (en) * 1975-08-22 1977-02-25 Olympus Optical Co Ltd Process for fabricating an optical curved surface using a photopolymer izable adhesive
US4208364A (en) * 1976-03-24 1980-06-17 Shepherd Thomas H Process for the production of contact lenses
AT368067B (de) * 1977-01-21 1982-09-10 Weber Hermann P Verfahren und vorrichtung zur herstellung einer optischen linse durch spritzgiessen
GB2088273A (en) * 1980-12-03 1982-06-09 Philips Electronic Associated Method of making biaspherical optical elements
US4353849A (en) * 1981-06-19 1982-10-12 Lawrence Lewison Manufacture of soft contact lenses having vent passageways
FR2530181A1 (fr) * 1982-07-16 1984-01-20 Essilor Int Procede et dispositif pour le moulage d'un element optique en matiere synthetique
FR2530182A1 (fr) * 1982-07-16 1984-01-20 Essilor Int Dispositif de moulage, notamment pour element optique, par exemple lentille ophtalmique

Also Published As

Publication number Publication date
LU87465A1 (fr) 1989-08-30
AU3089989A (en) 1989-09-07
IT8947700A0 (it) 1989-03-01
NL8900499A (nl) 1989-10-02
GB2219243A (en) 1989-12-06
JPH01316226A (ja) 1989-12-21
FR2628031A1 (fr) 1989-09-08
GB8915053D0 (en) 1989-08-23
GB2219241A (en) 1989-12-06
GB8904653D0 (en) 1989-04-12
FR2628031B1 (fr) 1995-05-19
DE3906564A1 (de) 1989-10-12

Similar Documents

Publication Publication Date Title
GB2145965B (en) Mounting dies in injection moulds
KR900007575A (ko) 압출 성형 방법 및 그 장치
GB2229133B (en) Moulding method and mould
KR860006416A (ko) 슬립캐스팅 성형법 및 성형용 주형
BR8904200A (pt) Processo e aparelho de fundicao contra a gravidade
EP0225523A3 (en) Molding die for use in casting
KR850007735A (ko) 슬립 캐스팅(slip casting) 성형법 및 성형용 주형
IT1232661B (it) Procedimento e apparecchio di stampaggio e colata utilizzando matrici a bocchello aventi superfici di stampaggio parametriche
KR920700076A (ko) 다이 캐스팅 다이에 사용되는 코팅된 소모성 코어 및 이로부터 제조된 다이 및 캐스팅
IT1182163B (it) Perfezionamento negli stampi di pressofusione
KR860005688A (ko) 주형내 형체 생산 공정 및 장치
FI904835A0 (fi) Muottiväline
KR920700803A (ko) 주조할 수 있는 매체로서 조형주조법
IT1222132B (it) Metodo per fabbricare uno stampo usato nello stampaggio allo stato semiliquido
GB2175528B (en) Device for use in reshaping the gate of a metal mould for plastic injection moulding
FI892402A (fi) Muottityökalu
BR9007509A (pt) Processo de moldagem de estacas e conjunto de aparelhamento para moldagem de estacas
IT8547866A0 (it) Metodo e apparecchio di stampaggio ed articoli cosi' ottenuti
GB8919112D0 (en) Transportable moulding tool
PT88660A (pt) Processo de moldacao e aparelho para a sua realizacao
DE59407986D1 (de) Vorrichtung für die Herstellung von Öffnungen in einer Giessform
KR900002732U (ko) 정밀금형 다이세트
KR870004978U (ko) 다이케스팅 금형에서의 코어핀 교환장치
KR900020049U (ko) 모울드 3단 금형의 언더컷 처리장치
KR850003156U (ko) 핀 포인트 게이트방식을 이용한 다이캐스팅금형

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960329