SG79215A1 - Wedge demolding of cast lens mold assemblies - Google Patents

Wedge demolding of cast lens mold assemblies

Info

Publication number
SG79215A1
SG79215A1 SG9701011A SG1997001011A SG79215A1 SG 79215 A1 SG79215 A1 SG 79215A1 SG 9701011 A SG9701011 A SG 9701011A SG 1997001011 A SG1997001011 A SG 1997001011A SG 79215 A1 SG79215 A1 SG 79215A1
Authority
SG
Singapore
Prior art keywords
mold
wedge
separating
frontcurve
array
Prior art date
Application number
SG9701011A
Other languages
English (en)
Inventor
F Widman Michael
Tsu-Fang Wang Daniel
A Dagobert Henri
Original Assignee
Johnson & Johnson Vision Prod
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 Johnson & Johnson Vision Prod filed Critical Johnson & Johnson Vision Prod
Publication of SG79215A1 publication Critical patent/SG79215A1/en

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
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00192—Demoulding, e.g. separating lenses from mould halves
    • B29D11/00221—Demoulding, e.g. separating lenses from mould halves using prying 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/006—Handling moulds, e.g. between a mould store and a moulding machine
    • 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
    • B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
    • 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
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/46—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles using fluid pressure
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/808—Lens mold

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Robotics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Eyeglasses (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
SG9701011A 1996-04-01 1997-03-31 Wedge demolding of cast lens mold assemblies SG79215A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/626,730 US5693268A (en) 1996-04-01 1996-04-01 Wedge demolding of cast lens mold assemblies

Publications (1)

Publication Number Publication Date
SG79215A1 true SG79215A1 (en) 2001-03-20

Family

ID=24511592

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9701011A SG79215A1 (en) 1996-04-01 1997-03-31 Wedge demolding of cast lens mold assemblies

Country Status (9)

Country Link
US (1) US5693268A (fr)
EP (1) EP0799689B1 (fr)
JP (1) JPH1058456A (fr)
AT (1) ATE242688T1 (fr)
AU (1) AU706354B2 (fr)
CA (1) CA2201260C (fr)
DE (1) DE69722697T2 (fr)
SG (1) SG79215A1 (fr)
TW (1) TW467826B (fr)

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AU720247B2 (en) 1996-11-06 2000-05-25 Bausch & Lomb Incorporated Method and apparatus for separating contact lens mold sections
JP2001512383A (ja) * 1997-02-20 2001-08-21 テクノロジー リソース インターナショナル コーポレイション レンズ形成のためのガスケット
US6103148A (en) * 1998-02-19 2000-08-15 Technology Resources International Corporation Method for curing a lens-forming fluid
USD434050S (en) * 1999-12-06 2000-11-21 Technology Resource International Corporation Gasket for lens making
US6558584B1 (en) * 2000-03-31 2003-05-06 Bausch & Lomb Incorporated Apparatus and method for handling an ophthalmic lens
GB2360730B (en) * 2000-03-31 2004-09-22 Bausch & Lomb Uk Ltd Apparatus and method for separating contact lens molds
US6514436B1 (en) 2000-05-31 2003-02-04 Bausch & Lomb Incorporated Apparatus and method for clamping and releasing contact lens molds
US6663801B2 (en) * 2001-04-06 2003-12-16 Johnson & Johnson Vision Care, Inc. Silicon carbide IR-emitter heating device and method for demolding lenses
US6708397B2 (en) * 2001-08-09 2004-03-23 Johnson & Johnson Vision Care, Inc. Inlay station with alignment assemblies and transfer tubes
JP4695798B2 (ja) * 2001-09-28 2011-06-08 株式会社メニコンネクト 眼用レンズの分離方法およびそれに用いる分離装置
US7628810B2 (en) 2003-05-28 2009-12-08 Acufocus, Inc. Mask configured to maintain nutrient transport without producing visible diffraction patterns
US20050062179A1 (en) * 2003-09-22 2005-03-24 Sanjay Rastogi Automated method for transferring lenses in a hydrated state from molds to receivers
GB2409427A (en) * 2003-12-23 2005-06-29 Bausch & Lomb Handling moulded opthalmic lenses
WO2005090060A2 (fr) * 2004-03-24 2005-09-29 Novartis Ag Procede de production de verres de contact
US20060071356A1 (en) * 2004-10-04 2006-04-06 Kevin Beebe Method for separating excess material from a lens mold
US9102110B2 (en) * 2005-08-09 2015-08-11 Coopervision International Holding Company, Lp Systems and methods for removing lenses from lens molds
US7799249B2 (en) * 2005-08-09 2010-09-21 Coopervision International Holding Company, Lp Systems and methods for producing silicone hydrogel contact lenses
US7799248B2 (en) * 2006-03-20 2010-09-21 Coopervision International Holding Company, Lp Demolding aids for silicone hydrogels and related methods
US20080073804A1 (en) * 2006-09-21 2008-03-27 Yasuo Matsuzawa Method for producing contact lenses
CN101563213B (zh) * 2006-12-21 2013-07-24 博士伦公司 用于将后模具部分和前模具部分之间的空腔中模制的透镜脱开(release)的装置和方法
CN101579907B (zh) * 2008-05-16 2013-05-08 鸿富锦精密工业（深圳）有限公司 分模装置
TWI409153B (zh) * 2008-05-30 2013-09-21 Hon Hai Prec Ind Co Ltd 分模裝置
DE102008062477B3 (de) * 2008-12-16 2010-03-25 Airbus Deutschland Gmbh Verfahren, System und Formwerkzeug zum Herstellen von Bauteilen aus Faserverbundwerkstoffen
US10004593B2 (en) 2009-08-13 2018-06-26 Acufocus, Inc. Intraocular lens with elastic mask
US9427311B2 (en) 2009-08-13 2016-08-30 Acufocus, Inc. Corneal inlay with nutrient transport structures
ES2970433T3 (es) 2009-08-13 2024-05-28 Acufocus Inc Método de fabricación de implantes intraoculares con máscara y lentes
US8313675B2 (en) * 2009-08-31 2012-11-20 Coopervision International Holding Company, Lp Demolding of ophthalmic lenses during the manufacture thereof
EP2637847B1 (fr) 2010-11-10 2014-07-23 Novartis AG Procédé pour fabriquer des lentilles de contact
JP6046160B2 (ja) 2011-12-02 2016-12-14 アキュフォーカス・インコーポレーテッド 選択的分光透過性を有する眼科マスク
US9427922B2 (en) * 2013-03-14 2016-08-30 Acufocus, Inc. Process for manufacturing an intraocular lens with an embedded mask
CN103990783B (zh) * 2014-04-26 2017-02-15 浙江精一重工有限公司 一种铸造装置
EP3220859B8 (fr) 2014-11-19 2020-06-10 AcuFocus, Inc. Masque cassable pour traiter la presbytie
US10687935B2 (en) 2015-10-05 2020-06-23 Acufocus, Inc. Methods of molding intraocular lenses
CA3005891C (fr) 2015-11-24 2023-12-12 Acufocus, Inc. Lentille torique intraoculaire a faible ouverture a profondeur de foyer accrue
US10286594B2 (en) 2015-11-25 2019-05-14 Clearcorrect Operating, Llc Batch thermoformer for dental appliances
EP3526017B1 (fr) 2016-10-14 2025-11-26 Alcon Inc. Procédé de production de lentilles de contact
MY193482A (en) * 2016-10-14 2022-10-17 Alcon Inc Method for producing contact lenses
EP3790508B1 (fr) 2018-05-09 2026-04-29 AcuFocus, Inc. Implant intraoculaire avec optique
EP3865290B1 (fr) * 2020-02-13 2023-12-27 Essilor International Machine et procédé de démontage d'un ensemble de moule de lentille
GB202019796D0 (en) 2020-12-15 2021-01-27 Ams Sensors Singapore Pte Ltd Manufacturing optical elements
US20240043308A1 (en) * 2022-08-05 2024-02-08 Brelyon, Inc. Methods and Systems for Computational Precision Three-dimensional Forming Via Localized Stress Remapping

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792947A (en) * 1972-07-10 1974-02-19 A Diehl Molding apparatus
US5160749A (en) * 1990-10-30 1992-11-03 Minnesota Mining And Manufacturing Company Three piece mold assembly for making an ocular device
US5417557A (en) * 1992-09-18 1995-05-23 Johnson & Johnson Vision Products, Inc. Laser assisted demolding of ophthalmic lenses

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2365764A (en) * 1942-03-06 1944-12-26 Akron Standard Mold Co Method and apparatus for stripping articles from molds
GB572748A (en) * 1944-01-27 1945-10-22 John Johnson Improvements in or relating to the moulding of plastics
US3851038A (en) * 1972-08-02 1974-11-26 Sybron Corp Method of depositing a stack of reinforcing members in a mold and molding
JPS58187317A (ja) * 1982-04-28 1983-11-01 Matsushima Kogyo Co Ltd 合成樹脂製レンズの離型装置
CA1230517A (fr) * 1982-08-25 1987-12-22 Ladislao W. Putkowski Presse a coins de calage
CA1263208A (fr) * 1985-12-19 1989-11-28 Kirk K.S. Hwang Methode et machine pour la fabrication de dispositifs optiques
US5137441A (en) * 1990-10-30 1992-08-11 Minnesota Mining And Manufacturing Company Mold assembly for making an ocular lens blank
US5358672A (en) * 1992-06-08 1994-10-25 Innotech, Inc. Method for removing finished articles from glass, plastic or metallic molds
DE4414977A1 (de) * 1994-04-29 1995-11-02 Wilhelm Hegler Vorrichtung zur Herstellung von Rohren aus thermoplastischem Kunststoff mit Querprofilierung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792947A (en) * 1972-07-10 1974-02-19 A Diehl Molding apparatus
US5160749A (en) * 1990-10-30 1992-11-03 Minnesota Mining And Manufacturing Company Three piece mold assembly for making an ocular device
US5417557A (en) * 1992-09-18 1995-05-23 Johnson & Johnson Vision Products, Inc. Laser assisted demolding of ophthalmic lenses

Also Published As

Publication number Publication date
US5693268A (en) 1997-12-02
MX9702424A (es) 1998-03-31
CA2201260C (fr) 2006-06-06
ATE242688T1 (de) 2003-06-15
DE69722697T2 (de) 2004-04-29
TW467826B (en) 2001-12-11
EP0799689B1 (fr) 2003-06-11
DE69722697D1 (de) 2003-07-17
EP0799689A2 (fr) 1997-10-08
EP0799689A3 (fr) 1998-01-28
EP0799689A8 (fr) 2006-07-12
AU1663697A (en) 1997-10-09
AU706354B2 (en) 1999-06-17
JPH1058456A (ja) 1998-03-03
CA2201260A1 (fr) 1997-10-01

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