CN101791864B - Multi-functional soft contact lens mould - Google Patents
Multi-functional soft contact lens mould Download PDFInfo
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- CN101791864B CN101791864B CN 201010125586 CN201010125586A CN101791864B CN 101791864 B CN101791864 B CN 101791864B CN 201010125586 CN201010125586 CN 201010125586 CN 201010125586 A CN201010125586 A CN 201010125586A CN 101791864 B CN101791864 B CN 101791864B
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Abstract
The invention relates to a moulding method of a soft contact lens. The preparation method of the mould comprises the following steps: 1) designing and processing a metal core, 2) performing injection molding of the mould; 3) curing and forming a lens; 4) performing hydration of the lens; and 5) packaging the lens. The lens mould of the invention can be used to satisfy the forming of the soft contact lens and used as the hydration container of a semi-finished lens and as the packaging container of a finished lens too. The invention also has the advantages of stable injection, simple hydration operation and low injection low.
Description
Technical field
The present invention relates to the form structure design of soft contact lens eyeglass.This mould namely can be used as the moulding of soft contact lens eyeglass, can be used as again the hydration container of soft contact lens eyeglass, can be used as again the packaging container of soft contact lens eyeglass.
Background technology
The at present mold pressing in the soft contact lens production method, revolve the size that two kinds of techniques of mould all need to come with mould ordering lenses, will be with special hydration container during hydration, and final products also need to come packaging protection with container.This is because these two kinds of techniques mould when hydration namely is dropped after through shaping and demoulding hydration operation only as the carrier of eyeglass.So need a dedicated container equipment when eyeglass carries out hydration, need a larger-size container to come packing to preserve liquid and eyeglass when encapsulating simultaneously.
Summary of the invention
The disappearance that can waste mould for structural design and the process requirements of original mould, the object of the present invention is to provide a kind of slightly large-sized plastics mould, can satisfy the soft contact lens moulding, can as the container of lens hydrated, also can serve as the packaging container of finished product eyeglass again.To such an extent as to the mould with semi-finished lenses does not abandon, take full advantage of the saving cost after hydration.
Technical scheme of the present invention is achieved in the following ways: a kind of mould of multi-functional soft contact lens follows these steps to successively: 1) design of metal die and processing, 2) injection mo(u)lding, 3 of mould) curing molding, 4 of eyeglass) hydration, 5 of eyeglass) encapsulation of eyeglass; It is characterized in that:
1), the design of metal die and processing: the 1. design of counterdie: the metal front cavity of optical function is arranged and without the metal rear cavity of optics function; A sealing of design table top on the metal front cavity shoulder; Also be designed with a bulge loop on the metal front cavity post jamb; The step place of metal front cavity is designed with the stabilized lenses chamfering; Be designed with a scrobicular ring on the metal rear cavity post jamb.2. the design of patrix: the metal rear cavity of optical function is arranged and without the metal front cavity of optics function, be designed with a scrobicular ring on the metal rear cavity post jamb;
Sealing table top on the described counterdie metal front cavity shoulder, its surperficial required precision is not less than 0.01mm;
Bulge loop on the described counterdie metal front cavity post jamb and the scrobicular ring on the patrix metal rear cavity post jamb are the locating rings that upper and lower mould cooperates, the protruding 0.2mm of bulge loop ring, ring width 0.4mm; The recessed 0.15mm of scrobicular ring ring, ring width 0.35mm;
Scrobicular ring on the described counterdie metal rear cavity post jamb, its scrobicular ring ring width 0.2mm-0.5mm, the degree of depth is between 0.2mm-0.5mm, and post jamb maintains gradient before and after the scrobicular ring, and gradient is 2 °-5 °;
The stabilized lenses chamfering at the step place of described counterdie metal front cavity, its chamfer angle are that length is between 0.2mm-1.0mm between 30 °-60 °;
Design parameter input numerically controlled lathe with the front and back die of upper and lower mould processes the metal die that meets designing requirement according to parameter;
2), the injection mo(u)lding of mould: the injection machine of packing into of die before and after the upper and lower mould metal made is carried out the injection mo(u)lding of plastics mould, the plastics that dissolve moulding in the cavity that front and back metal die forms, utilize afterwards manipulator that the upper die and lower die of cooling are taken out, automatically insert in the clean polybag and preserve;
Described injection raw material is: a kind of among PP, PVC, PE, PS, ABS, PMMA, the TPU.
3), the curing molding of eyeglass: take out qualified upper and lower mould and carry out the instillation of Raw materials for lenses, put into together afterwards the moulding that forming machine carries out eyeglass;
4), the hydration of eyeglass: the mould that pure water is injected with semi-finished lenses carries out hydration, and eyeglass will soak and place mould after hydration is finished;
5) encapsulation of eyeglass: with the packaging container of counterdie as eyeglass, the sealing face of counterdie is combined with aluminium foil and is sealed, and has guaranteed the sealing in the container after the sealing.
The present invention not only can satisfy the soft contact lens moulding, can be used as again the hydration container of semi-finished lenses, can also serve as the packaging container of finished product eyeglass.This design has also that injection moulding is stable, simple hydration operation, injection moulding low cost and other advantages.
Description of drawings
Fig. 1 is die and form structure schematic diagram before and after the counterdie metal of the present invention.
Fig. 2 is die and form structure schematic diagram before and after the patrix metal of the present invention.
Fig. 3 is that up and down mould of the present invention cooperates schematic diagram.
Fig. 4 is band eyeglass lower die structure schematic diagram of the present invention.
Fig. 5 is finished product eyeglass displacement structure schematic diagram of the present invention.
The specific embodiment
Implementation of the present invention is achieved in the following ways, and the enforcement that this kind produced the form structure design of soft contact lens follows these steps to successively: the injection mo(u)lding of the design of metal die and processing, plastics mould, the curing molding of eyeglass, the hydration of eyeglass, the encapsulation of eyeglass.
1, the design of metal die and processing: be designed with the counterdie metal front cavity 01 (accompanying drawing 1) of optical function and without the counterdie metal rear cavity 02 (accompanying drawing 1) of optics function; The patrix metal rear cavity 04 (accompanying drawing 2) of optical function is arranged and without the patrix metal front cavity 03 (accompanying drawing 2) of optics function.Also be designed with a scrobicular ring 08 on patrix metal rear cavity 04 post jamb, the locating ring as counterdie cooperates encircles recessed 0.15mm, ring width 0.35mm.A sealing of design table top 10 on counterdie metal front cavity 01 shoulder, its surperficial required precision is not less than 0.01mm, the requirement of being combined with aluminium foil when satisfying sealing, this is that the PP mould is as the precondition of eyeglass sealing container.Also be designed with a bulge loop 07 on counterdie metal front cavity 01 post jamb, the locating ring as patrix cooperates encircles protruding 0.2mm, ring width 0.4mm.Be designed with a scrobicular ring 09 on counterdie metal rear cavity 02 post jamb, this design can be produced inwall with the plastics mould of bulge loop 12, its bulge loop height is between 0.2mm-0.5mm, and is wide between 0.2mm-0.5mm, can guarantee the absolute stability (if when needing the skiving limit) on skiving limit.The integrality of the smooth and easy and plastics mould inwall bulge loop 12 of plastics mould when simultaneously scrobicular ring 09 front and back post jamb maintains certain gradient and guarantees the demoulding, its gradient is between 2 °-5 °, the step place of counterdie metal front cavity 01 is provided with stabilized lenses chamfering 13, its chamfer angle is that length is between 0.2mm-1.0mm between 30 °-60 °.The design parameter of the front and back die of upper and lower mould input numerically controlled lathe, process the metal die that meets designing requirement according to parameter.
2, the injection mo(u)lding of mould: the injection machine of packing into of die before and after the upper and lower mould metal made is carried out the injection mo(u)lding of plastics mould, accompanying drawing 1, accompanying drawing 2.In the production process, the plastics plastics that dissolve moulding in the cavity that front and back metal die forms utilizes manipulator that the mould 05 of cooling, 06 is taken out afterwards, automatically inserts in the clean polybag and preserves.Treat that the mould product examine is qualified, leave standstill the instillation moulding of carrying out raw material after exceeding schedule time.
3, the moulding of eyeglass: accompanying drawing 3, take out qualified mould 05,06 and carry out the instillation of Raw materials for lenses, put into together afterwards the moulding that forming machine carries out eyeglass.
4, the hydration of eyeglass: the hydration of this mould is extremely easy, as long as with the counterdie 05 of pure water injection with semi-finished lenses 11, this counterdie 05 can be used as again the hydration tankage like this.Eyeglass will soak and place mould after hydration is finished, and afterwards circulation encapsulates to next process.
5, the encapsulation of eyeglass: original mould namely abandons after hydration is finished, and the structural design of this kind mould can be utilized again, packaging container as eyeglass, a sealing of design table top 10 on the outer ring surface on the counterdie 05, the requirement of being combined with aluminium foil when satisfying sealing, guaranteed the sealing in the container after the sealing, this also is that mould is as the precondition of eyeglass sealing container.Greatly reduce production cost, reduced again the generation of discarded object.
Mould of the present invention namely can be used as eyeglass moulding usefulness, again can be as the hydration container of eyeglass, and the storage that also can be used as eyeglass is used.As the eyeglass moulding time spent, mould is designed with Optical Region, non-optical zones, marginal zone.As long as in this mould, splash into raw material, get final product molded lenses according to the design parameter of mould, the eyeglass semi-finished product 11 of moulding invest in the plastics mould, have reached the purpose of this mold for molding eyeglass.
This plastics mould is as the hydration time spent of eyeglass, as long as add purified water (accompanying drawing 4) under with the plastics of eyeglass semi-finished product 11 in the mould, need special hydration tankage and the transfering process of eyeglass when having saved original hydration, improved productivity effect.
When this mould encapsulates as eyeglass (accompanying drawing 5), wherein finished product eyeglass 15, sealing table top 10, sealing aluminium foil 17, encapsulation store buffer liquid 16, stable position bulge loop 12, mould demoulding inclined-plane 18, stabilized lenses chamfering 13.Become finished product eyeglass 15 with eyeglass after the plastics mould process hydration of semi-finished lenses after being absorbed water by original semi-finished lenses 11, it is large that diameter becomes, the marginal zone of finished product eyeglass places two step stabilized lenses chamferings, 13 places of mould under the plastics, the gradient design of this chamfering is substantially identical with the outer surface slope of eyeglass non-optical zones, has reached the stablizing effect that eyeglass is put.Eyeglass is to place this container by its surrounding zone annular brace simultaneously, has overcome Optical Region and has directly contacted with container bottom, has avoided the friction of lens optical district and plastics mould, has improved the storage quality of eyeglass.Leave the store buffer liquid 16 of setting in the container, guaranteed that namely eyeglass moves freely in container, move it and be unlikely to excessive, reduced container volume.Around the apical ring of plastics mould, be designed with sealing table top 10, its surface accuracy requires to be not less than 0.01mm, guarantees that sealing aluminium foil 17 can cooperate with sealing table top 10 in good condition, makes container reach the sterile sealing requirement, guarantee the storage cycle of eyeglass in the packaging container, promoted the quality of product.
Claims (7)
1. the forming method of a soft contact lens eyeglass follows these steps to: 1) design of metal die and processing, 2 successively) injection mo(u)lding, 3 of mould) curing molding, 4 of eyeglass) hydration, 5 of eyeglass) encapsulation of eyeglass;
1), the design of metal die and processing: the 1. design of counterdie: the metal front cavity (01) of optical function is arranged and without the metal rear cavity (02) of optics function; A sealing of design table top (10) on metal front cavity (01) shoulder; Also be designed with a bulge loop (07) on metal front cavity (01) post jamb; Also be designed with a chamfering (13) on metal front cavity (01) post jamb; Be designed with a scrobicular ring (09) on metal rear cavity (02) post jamb; 2. the design of patrix: the metal rear cavity (04) of optical function is arranged and without the metal front cavity (03) of optics function, also be designed with a scrobicular ring (08) on metal rear cavity (04) post jamb;
Design parameter input numerically controlled lathe with the front and back die of upper and lower mould processes the metal die that meets designing requirement according to parameter;
2): the injection mo(u)lding of mould: the injection machine of packing into of die before and after the upper and lower mould metal made is carried out the injection mo(u)lding of plastics mould, the plastics that dissolve moulding in the cavity that front and back metal die forms, utilize afterwards manipulator that the patrix (06) of cooling, counterdie (05) are taken out, automatically insert in the clean polybag and preserve;
3), the curing molding of eyeglass: take out qualified upper and lower mould and carry out the instillation of Raw materials for lenses, put into together afterwards the moulding that forming machine carries out eyeglass;
4), the hydration of eyeglass: the counterdie that pure water is injected with semi-finished lenses carries out hydration, and eyeglass will soak and place mould after hydration is finished;
5) encapsulation of eyeglass: with the packaging container of counterdie as eyeglass, the sealing table top (10) of counterdie is combined with aluminium foil and is sealed, and has guaranteed the sealing in the container after the sealing.
2. the forming method of a kind of soft contact lens eyeglass according to claim 1, it is characterized in that: the sealing table top (10) on counterdie metal front cavity (01) shoulder described step 1), to cooperate the aluminium foil sealing requirement, its surface accuracy otherwise less than 0.01mm.
3. the forming method of a kind of soft contact lens eyeglass according to claim 1, it is characterized in that: the bulge loop (07) on counterdie metal front cavity (01) post jamb described step 1), be the locating ring that upper and lower mould cooperates, encircle protruding 0.2mm, ring width 0.4mm.
4. the forming method of a kind of soft contact lens eyeglass according to claim 1, it is characterized in that: the scrobicular ring (08) on patrix metal rear cavity (04) post jamb described step 1), be the locating ring that upper and lower mould cooperates, encircle recessed 0.15mm, ring width 0.35mm.
5. the forming method of a kind of soft contact lens eyeglass according to claim 1, it is characterized in that: the scrobicular ring (09) on counterdie metal rear cavity (02) post jamb described step 1), its scrobicular ring ring width 0.2mm-0.5mm, the degree of depth is between 0.2mm-0.5mm, post jamb maintains gradient before and after the scrobicular ring (09), and gradient is 2 °-5 °.
6. the forming method of a kind of soft contact lens eyeglass according to claim 1, it is characterized in that: the inboard of the counterdie metal front cavity (01) described step 1) is provided with stabilized lenses chamfering (13), its chamfer angle is that length is between 0.2mm-1.0mm between 30 °-60 °.
7. the forming method of a kind of soft contact lens eyeglass according to claim 1, it is characterized in that: the plastics described step 2) are: a kind of among PP, PVC, PE, PS, ABS, PMMA, the TPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125586 CN101791864B (en) | 2010-03-16 | 2010-03-16 | Multi-functional soft contact lens mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125586 CN101791864B (en) | 2010-03-16 | 2010-03-16 | Multi-functional soft contact lens mould |
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| CN101791864A CN101791864A (en) | 2010-08-04 |
| CN101791864B true CN101791864B (en) | 2013-04-03 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649034B (en) * | 2011-03-17 | 2014-07-02 | 京东方科技集团股份有限公司 | Manufacture device and manufacture method of microcapsules for electrophoresis display |
| TWI409195B (en) * | 2011-04-21 | 2013-09-21 | Bio Optic Inc | Container for a contact lens |
| NL2006921C2 (en) | 2011-06-09 | 2012-12-11 | Innovalens B V | GIETMAL FOR MANUFACTURING CONTACT LENSES OR INTRA-OCULAR LENSES. |
| US9358736B2 (en) * | 2011-07-11 | 2016-06-07 | Largan Medical Co., Ltd. | Method of packaging and manufacturing a contact lens in a container |
| CN103112114B (en) * | 2013-01-15 | 2015-11-18 | 江苏海伦隐形眼镜有限公司 | A kind of soft contact lens and preparation method thereof |
| CN103341951A (en) * | 2013-06-09 | 2013-10-09 | 江苏海伦隐形眼镜有限公司 | Manufacture method for colored soft contact lenses |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5407062A (en) * | 1994-01-28 | 1995-04-18 | Bausch & Lomb Incorporated | Contact lens mold packaging |
| CN1982031A (en) * | 2005-12-08 | 2007-06-20 | 纽巴依欧株式会社 | Injection moulding forming machine for contact lens die |
| CN101428477A (en) * | 2007-11-08 | 2009-05-13 | 优你康光学股份有限公司 | Contact lens molding method and mould |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63191606A (en) * | 1987-02-04 | 1988-08-09 | Tome Sangyo Kk | Manufacture of lens for eye and mold used therefor |
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2010
- 2010-03-16 CN CN 201010125586 patent/CN101791864B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5407062A (en) * | 1994-01-28 | 1995-04-18 | Bausch & Lomb Incorporated | Contact lens mold packaging |
| CN1982031A (en) * | 2005-12-08 | 2007-06-20 | 纽巴依欧株式会社 | Injection moulding forming machine for contact lens die |
| CN101428477A (en) * | 2007-11-08 | 2009-05-13 | 优你康光学股份有限公司 | Contact lens molding method and mould |
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