MX9702424A - Desmoldeo de ensambles de molde de lente colado, mediante cuña. - Google Patents

Desmoldeo de ensambles de molde de lente colado, mediante cuña.

Info

Publication number
MX9702424A
MX9702424A MX9702424A MX9702424A MX9702424A MX 9702424 A MX9702424 A MX 9702424A MX 9702424 A MX9702424 A MX 9702424A MX 9702424 A MX9702424 A MX 9702424A MX 9702424 A MX9702424 A MX 9702424A
Authority
MX
Mexico
Prior art keywords
mold
wedge
separating
support pallet
frontcurve
Prior art date
Application number
MX9702424A
Other languages
English (en)
Other versions
MXPA97002424A (es
Inventor
Michael F Widman
Daniel Tsu-Fang Wang
Henri A Dagobert
Original Assignee
Johnson & Johnson
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 filed Critical Johnson & Johnson
Publication of MX9702424A publication Critical patent/MX9702424A/es
Publication of MXPA97002424A publication Critical patent/MXPA97002424A/es

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/00009Production of simple or compound lenses
    • B29D11/00038Production of contact lenses
    • B29D11/00125Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00192Demoulding, e.g. separating lenses from mould halves
    • B29D11/00221Demoulding, e.g. separating lenses from mould halves using prying means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00Handling, 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
    • B29C31/006Handling moulds, e.g. between a mould store and a moulding machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/0011Moulds or cores; Details thereof or accessories therefor thin-walled moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/44Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/46Moulds 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003Discharging moulded articles from the mould
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/808Lens mold

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Robotics (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (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)

Abstract

Un aparato de desmoldeo para separar mecánicamente de manera confiable y repetida ensambles de molde de lentes de contacto sin dañar el lente de contacto formado entre los mismos. El ensamble de molde incluye un molde de curva frontal que tiene una seccion central de molde con una pestaña circundante, y el molde correspondiente de curva posterior que tiene también una seccion central de molde con una pestaña circundante, con un lente de contacto que se moldea entre los mismos. Se provee una paleta de soporte para soportar el ensamble de molde. Un dispositivo separador de cuña provee por lo menos una cuña separadora colocada entre las pestañas separadas al dispositivo separador de cuña y a la paleta de soporte uno respecto a otro para separar progresivamente el molde de curva frontal y el molde de curva posterior. En una modalidad se monta estacionariamente el dispositivo separador de cuña suspendido arriba de la paleta de soporte, y un mecanismo conduce la paleta de soporte respecto al dispositivo separador de cuña montado estacionariamente a una posicion en la cual se coloca la cuña separadora entre las pestañas separadas del ensamble de molde y separa o desmoldea los moldes de curva frontal y de curva posterior. En varias modalidades preferidas, la paleta de soporte soporta los ensambles de molde en disposicion n x m. En modalidades alternativas, el dispositivo separador de cuña puede incluir una cuña separadora para cada hilera para la disposicion n x m, o dos cuñas separadoras para cada hilera, colocada una a cada lado de la hilera. En modalidades alternativas, la disposicion n x m en los ensambles de molde puede incluir una estructura de molde que interconecte una disposicion n x m de moldes de curva frontal, una disposicion n x m de moldes individuales no conectados de curva frontal, con un molde individual de curva posterior colocado sobre cada molde de curva frontal.
MXPA/A/1997/002424A 1996-04-01 1997-04-01 Desmoldeo de ensambles de molde de lente colado,mediante cuña MXPA97002424A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08626730 1996-04-01
US08/626,730 US5693268A (en) 1996-04-01 1996-04-01 Wedge demolding of cast lens mold assemblies

Publications (2)

Publication Number Publication Date
MX9702424A true MX9702424A (es) 1998-03-31
MXPA97002424A MXPA97002424A (es) 1998-10-15

Family

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Also Published As

Publication number Publication date
CA2201260A1 (en) 1997-10-01
AU1663697A (en) 1997-10-09
AU706354B2 (en) 1999-06-17
US5693268A (en) 1997-12-02
EP0799689A8 (en) 2006-07-12
TW467826B (en) 2001-12-11
JPH1058456A (ja) 1998-03-03
DE69722697T2 (de) 2004-04-29
EP0799689B1 (en) 2003-06-11
DE69722697D1 (de) 2003-07-17
EP0799689A2 (en) 1997-10-08
SG79215A1 (en) 2001-03-20
EP0799689A3 (en) 1998-01-28
CA2201260C (en) 2006-06-06
ATE242688T1 (de) 2003-06-15

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal