CN1085585C - Mold for molding a resin lens and resin lens produced by using the same mold - Google Patents
Mold for molding a resin lens and resin lens produced by using the same mold Download PDFInfo
- Publication number
- CN1085585C CN1085585C CN95192998A CN96191272A CN1085585C CN 1085585 C CN1085585 C CN 1085585C CN 95192998 A CN95192998 A CN 95192998A CN 96191272 A CN96191272 A CN 96191272A CN 1085585 C CN1085585 C CN 1085585C
- Authority
- CN
- China
- Prior art keywords
- face
- mould
- packing ring
- resin lens
- eyeglass
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 239000011347 resin Substances 0.000 title claims abstract description 23
- 229920005989 resin Polymers 0.000 title claims abstract description 23
- 238000000465 moulding Methods 0.000 title claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 30
- 238000007493 shaping process Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000011521 glass Substances 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000009740 moulding (composite fabrication) Methods 0.000 description 21
- 239000002184 metal Substances 0.000 description 7
- 201000009310 astigmatism Diseases 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Images
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
- B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
-
- 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
- B29D11/00019—Production of simple or compound lenses with non-spherical faces, e.g. toric faces
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
Abstract
A mold for molding a resin lens for glasses or an optical instrument, and more particularly for precisely molding a concave surface into a non-spherical and/or toroidal surface into a non-spherical and/or toroidal surface such as a hyperboloidal or ellipsoidal surface wherein a cross-sectional configuration of a gasket for the mold can be made constant and wherein only one type of commonly usable gasket is required for respective types of molds. To this end, that surface (A) of the circumferential edge portion of the mold for molding the concave surface that is in contact with the gasket (3) is formed to be in the same plane along the full circumference of the mold, and the height of a surface (B) adjacent to this surface (A) can be changed so that the height (H) of an inner protruding portion (3a) serving as a spacer for the gasket can be constant. In addition, at least two surfaces that are adjacent to the surface (A) are provided so as to improve the sealing performance between the gasket and the mold.
Description
Technical field
The present invention relates to the resin lens of resin lens molding die and this Mold Making of use.
Prior art
For example, in the spectacle lens of plastic production, the eyeglass that has the usual range number of degrees is made by the cast polymerization forming process, and the eyeglass of making according to prescription of spectacles, the particularly high number of degrees but also have surface of sphere and the eyeglass of astigmatism, almost all be according to prescription of spectacles, the semi-finished product minute surface made earlier makes through attrition process by giving.
When semi-finished lenses is carried out the attrition process operation, it would be better to simultaneously making the forming face that does not need attrition process according to the prescription of spectacles attrition process with its eyeglass two sides, another side makes unprocessed, and is higher according to the operating efficiency of prescription this green surface of attrition process.
Spectacle lens generally all is falcate, concave surface is by having the die forming of single curvature arbitrarily, make the green surface of common sphere shape, and convex surface according to fixed shape and the curvature die forming by the high accuracy attrition process, make do not need attrition process with the corresponding spherical shape of this die face, if determined client's prescription of spectacles, then above-mentioned unprocessed concave surface is carried out attrition process according to this prescription, make the desirable prescription lens of client.
As what talk about above, semi-finished lenses makes prescription lens, must carry out attrition process to half-finished concave surface, not only need worker's clamp mould of multiple complexity when having the diverging lens of aspherical shape such as hyperboloid or ellipsoid and complicated curved surface in attrition process.And technology that need be very high-precision.Therefore, its shortcoming is just must expensive process time in order to obtain the high eyeglass of machining accuracy.
In addition, usually in single focus lens that plastics are made, through the prescription lens that the attrition process semi-finished lenses is made, mainly be the eyeglass of using as the scope special number of degrees in addition that eyeglass manufacturer produces usually, great majority are surface of sphere and the quite high eyeglass of astigmatism.The eyeglass of making by the attrition process concave surface like that, the thickness of its edge become very thick as mentioned above, and is unsatisfactory in appearance.
No matter also have, be surface of sphere, and astigmatism all is a spherical shape, and the eyeglass of making through attrition process has shortcomings such as the spherical aberration of generation.If the therefore eyeglass of above-mentioned such high number of degrees, the problem of this spherical aberration is bigger.
Particularly, aspect attrition process, the very difficult plastics system eyeglass of a large amount of production and processings on the technology, do not wish to make by the shape that grinds to form essential complexity, but consider complex-shaped attrition process difficulty, need high-precision technology, so difficulty or ease from attrition process, and produce each step efficient and process time slice, more wish to adopt to have the mould that corresponding shape arbitrarily, curvature and high accuracy are made, make the forming face that need not process corresponding to this mould.
In order to overcome the problem of above-mentioned existence, the inventor attempts convex surface is made the green surface of spherical shape, and concave surface is made the semi-finished lenses of the lens surface of the shaping that does not need attrition process, this concave is to have aspheric surface such as hyperboloid or ellipsoid or attaching special surface configuration such as curved surface on these aspheric surfaces, and its achievement is shown in is willing in flat 1-38235 number in fact.
Be to use in practical stage and can make a pair of mould 7,9 that the eyeglass two sides is shaped and the mould of the packing ring that is connected these two moulds (gasket) composition as shown in Figure 4.Make eyeglass after injecting eyeglass resin 4, in order to make the good airproof performance of mould 7 that the eyeglass concave surface is shaped and packing ring 8, make packing ring 8 by following mode, promptly in order to meet the curved surface at position on every side of this mould 7, make the part that is connected with mould height H ' direction changes around, and the consistent packing ring 8 made from die curve E.
Yet packing ring is made by injection molding forming, needs metal die, and is consistent for the variation of the aspheric surface that makes above-mentioned mould coupling part and mould and/or curved surface, just needs a lot of metal dies, the cost increase, and the result has raised the price of eyeglass.In addition as shown in Figure 4, packing ring 8 has only E and two faces of F with the sealing surface of mould 7, and is unreliable on the sealing, requires further to improve sealing.
Therefore, the problem that the present invention will solve is to improve the shape of molding die, solve the above problems, cut down the kind of the packing ring in the shaping dies that uses in the shaping of resin lens cast polymerization, and then the kind and the quantity of cutting down the packing ring forming metal mould, improve the sealing of mould and packing ring simultaneously, also will solve the same problem in the mould that injection molding forming uses, further reduce the price of the resin lens that is shaped.
The invention provides a kind of resin lens molding die, constitute by a pair of mould on shaping eyeglass two sides with in conjunction with the ring spacer of said a pair of mould, said a pair of mould is entrenched in this packing ring from the upper and lower both direction of packing ring, clamp the inboard ledge of this packing ring, keep carrying out in this state cast polymerization, the face through precise finiss processing as the eyeglass forming face is aspheric surface and/or curved surface, it is characterized in that
On the circumference of the said mould that docks with packing ring, one side of the face of process precise finiss processing is cut out a groove, formation face in whole girth (A), said (A) forms the horizontal stand scalariform that is present on the same plane, also form face (B) simultaneously, the inboard adjacency of said (B) and this face (A), and be with this face (A) and intersect direction, and the shape height (h) along with said attrition process face in whole girth constantly changes
Said (B) was entrenched on interior week of inboard ledge of packing ring, and the face (A) of said formation horizontal stand scalariform docks with the end face of the inboard ledge of saying.
Therefore, can make with the part of mould butt joint in advance in conjunction with the packing ring of two moulds that constitute shaping dies and have packing ring with corresponding plane, above-mentioned same plane.So needn't re-use different packing rings for each mould, promptly can use a kind of packing ring for various moulds.The kind and the quantity of the metal die of making packing ring can be cut down thus significantly, the eyeglass price can be reduced.
And said step-like face A and within it side dock with packing ring in whole girth with the face B of crisscross adjacency, can improve mould and packing ring between sealing.
In said mould, the face C of the mould periphery that has in the outside of the step-like face A of circumference preferably is designed to be entrenched in the end of the packing ring that links to each other with inboard ledge.Face that forms in same plane and two faces that are adjacent are docked with packing ring, further improve the sealing between mould and the packing ring, can also prevent the foaming and the early stage demoulding.
The present invention also provides a kind of resin lens molding die, be by a pair of mould on shaping eyeglass two sides and be located at the mould of the shaping dies that is used for the injection molding forming resin lens that the liner between the said a pair of mould constitutes, the face through precise finiss processing as its mould eyeglass forming face partly is aspheric surface and/or curved surface
It is characterized in that, on the periphery of the mould of said mould part with part that liner docks on, formation face in whole girth (A1) and (B1), face (A1) is the face that is present in the same plane, face (B1) intersects vertically with the inboard adjacent of face (A1) and with this face (A1), and the shape height (h1) along with said attrition process face in whole girth constantly changes
Said (B1) is entrenched in liner on interior week.
In this case, also needn't change liner between between two moulds that constitute finishing die to each mould, so can cut down liner kind and quantity, reduce cost.
Feature of the present invention is a kind of resin lens that glasses are used or optical instrument is used that uses the shaping dies making of above-mentioned each invention, so can obtain low-cost eyeglass.
The simple declaration of accompanying drawing
Fig. 1 is the mould of the expression embodiment of the invention and the profile of packing ring relation.
The enlarged drawing of part shown in Fig. 2 Fig. 1.
Fig. 3 is the profile of other embodiment of the present invention.
Fig. 4 is the profile of mould and packing ring relation in the finishing die before the expression.
Implement preferred plan of the present invention
Fig. 1 is the profile of the finishing die that uses in the cast polymerization of resin lens of expression one embodiment of the invention, and 1 and 2 is a pair of moulds that the eyeglass two sides is shaped among the figure, the 3rd, and in conjunction with the ring spacer of 1,2 liang of mould.1,2 liang of mould is from matching with packing ring 3 up and down, keeps the interval that sets by the inboard ledge 3a of the packing ring 3 that clips.Used lens materials-the resin of 4 expressions injects resin by the inlet on the packing ring 3 10 among the figure.
Fig. 2 has provided Fig. 1 chain-dotted line and has enclosed enlarged drawing partly.The peripheral position of the connecting portion of mould 1 and packing ring 3, by making groove by becoming face 5 one sides of minute surface forming face through precise finiss processing, make the A face that is horizontal bench shape among the figure all be positioned at same plane in the whole week, and intersect vertically, and be designed to and gently mould 1 be pressed onto on the packing ring 3 with the inboard B face of A face adjacency and the C face of mould outer ring and the A face of saying previously.
That is to say, shown in attached Fig. 1 and 2, under the state in being entrenched in packing ring 3, said A docks with the end face of the part 3a that gives prominence to the inside, the face B of described inboard is entrenched in the interior week of inboard ledge 3a, and the face C of said periphery is entrenched on the end inner peripheral surface of the packing ring 3 that links to each other with inboard ledge 3a.
Wherein, the height h of above-mentioned B face, the mould whole week all along with the shape of aspheric surfaces such as the hyperboloid of the precise finiss machined surface 5 of mould 1 or ellipsoid and/or curved surface changes.
In the above-described configuration, be, be provided with the face A that forms the horizontal stand scalariform and be entrenched in the face B in the interior week of inboard ledge 3a in described attrition process face 5 one sides of mould 1 with the difference of the maximum of existing mould.In addition, face A and face B not necessity intersect vertically, and get final product so long as be two faces of intersection direction adjacency.Thus, mould 1 and packing ring 3 can driving fits on face A, face B and three faces of face C, can improve sealing.
The forming face 6 of mould 2 is the eyeglass faces that the concave surface of spherical shape carried out attrition process formation according to vision prescription in addition, because so long as it is just passable to have the sphere of the radius of curvature that sets, the D face of part should be in same plane so peripheral part is connected with packing ring 3, therefore, the height H of inboard ledge 3a with spacer function of packing ring 3 should be certain.
That is to say, in the part of docking of packing ring 3 and two moulds 1,2, by with this face A and the corresponding plane of face D on become the end face of said inboard ledge 3a of the interface of face A in the same plane of being present in of two moulds and face D, form above-mentioned inboard ledge 3a with certain height H.Therefore, there is no need each mould and use different packing rings.
Therefore, by making above-mentioned structure, as long as the metal pattern when making packing ring 3 injection molding formings is certainly a kind of just passable.Even consider the extremely situation of astigmatism, only depend on pre-prepd 2 to 3 kinds metal pattern, also enough.
Fig. 3 represents to make the present invention to be applicable to embodiment with the finishing die of resin lens injection molding forming.
In this embodiment, between mould 11,12 up and down, be provided with the liner 13 that plays spacer function.Mould 11 and butted part liner 13, promptly around the mould part 11a that has formed above-mentioned same precise finiss machined surface 15, in whole girth, form the face A1 that is present in the same plane, form face B1 again with the inboard of this face A1 adjacency, face B1 and said A1 intersect vertically, and are entrenched in as shown in the figure the interior week of liner.In this case, the height h1 of said B1 constantly changes along with the shape of the aspheric surface of attrition process face 15 and/or curved surface in the whole girth of said mould part 11a.
Therefore, between the A1 face of two moulds 11,12 and D1 face is certain at interval, and the thickness T of inserting liner 13 therebetween also is certain.The kind of liner and quantity do not need to change the liner that inserts between two moulds that constitute building mortion for each mould, so can be cut down.
Therefore, by the mould of the shaping usefulness in the finishing die that uses the various embodiments described above, can make the resin lens that low-cost glasses are used or optical instrument is used.
In addition, when eyeglass is made aspheric surface facing to the one side of object, the present invention also can resemble above-mentioned the structure of coupling part by forming above-mentioned mould and packing ring or liner implement.
As described above, according to the finishing die that possesses molding die of the present invention, even the packing ring that the conduct that the precise finiss machined surface of mould is made of aspheric surfaces such as hyperboloid, ellipsoid and/or curved surface combines with mould can use with a kind of packing ring jointly to various moulds, and just can make various eyeglass casting formings with a kind of packing ring.Therefore, it is a kind of just much of that the kind of the metal pattern of packing ring injection molding forming is needed only, so be very economical.The resin lens that low-cost glasses are used or optical instrument is used can be provided.
And by a pair of mould with insert the kind that this finishing die that liner between mould is formed also can be cut down liner, equally also can boost productivity.
Claims (3)
1. resin lens molding die, constitute by a pair of mould on shaping eyeglass two sides with in conjunction with the ring spacer of said a pair of mould, said a pair of mould is entrenched in this packing ring from the upper and lower both direction of packing ring, clamp the inboard ledge of this packing ring, keep carrying out in this state cast polymerization, the face through precise finiss processing as the eyeglass forming face is aspheric surface and/or curved surface, it is characterized in that
On the circumference of the said mould that docks with packing ring, one side of the face of process precise finiss processing is cut out a groove, formation face in whole girth (A), said (A) forms the horizontal stand scalariform that is present on the same plane, also form face (B) simultaneously, the inboard adjacency of said (B) and this face (A), and be with this face (A) and intersect direction, and the shape height (h) along with said attrition process face in whole girth constantly changes
Said (B) was entrenched on interior week of inboard ledge of packing ring, and the face (A) of said formation horizontal stand scalariform docks with the end face of the inboard ledge of saying.
2. the resin lens molding die of claim 1 record, wherein the mould outer peripheral face (C) that has in step-like (A) outside of the circumference of said mould is entrenched on the end inner peripheral surface of the packing ring that links to each other with the inboard ledge of packing ring.
3. resin lens molding die, be by a pair of mould on shaping eyeglass two sides and be located at the mould of the shaping dies that is used for the injection molding forming resin lens that the liner between the said a pair of mould constitutes, the face through precise finiss processing as its mould eyeglass forming face partly is aspheric surface and/or curved surface
It is characterized in that, on the periphery of the mould of said mould part with part that liner docks on, formation face in whole girth (A1) and (B1), face (A1) is the face that is present in the same plane, face (B1) intersects vertically with the inboard adjacent of face (A1) and with this face (A1), and the shape height (h1) along with said attrition process face in whole girth constantly changes
Said (B1) is entrenched in liner on interior week.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27550895A JP3705504B2 (en) | 1995-10-24 | 1995-10-24 | Mold for molding resin lenses for eyeglasses |
| JP275508/95 | 1995-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1166153A CN1166153A (en) | 1997-11-26 |
| CN1085585C true CN1085585C (en) | 2002-05-29 |
Family
ID=17556464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95192998A Expired - Fee Related CN1085585C (en) | 1995-10-24 | 1996-10-24 | Mold for molding a resin lens and resin lens produced by using the same mold |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3705504B2 (en) |
| CN (1) | CN1085585C (en) |
| WO (1) | WO1997015437A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3919293B2 (en) * | 1997-06-24 | 2007-05-23 | アピックヤマダ株式会社 | Resin sealing device |
| TWI362369B (en) | 2005-11-18 | 2012-04-21 | Hon Hai Prec Ind Co Ltd | Mold for molding lens |
| JP6069609B2 (en) * | 2015-03-26 | 2017-02-01 | 株式会社リガク | Double-curved X-ray condensing element and its constituent, double-curved X-ray spectroscopic element and method for producing the constituent |
| WO2016208584A1 (en) * | 2015-06-22 | 2016-12-29 | 東海光学株式会社 | Spectacle lens manufacturing system |
| KR102503006B1 (en) * | 2015-07-24 | 2023-02-23 | 토카이 옵티칼 주식회사 | eyeglass lens manufacturing system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123430A (en) * | 1979-03-19 | 1980-09-22 | Hoya Corp | Preparation of lens forming mold |
| JPH03231814A (en) * | 1990-02-08 | 1991-10-15 | Hoya Corp | Manufacture of plastic lens and casting gasket for plastic lens |
-
1995
- 1995-10-24 JP JP27550895A patent/JP3705504B2/en not_active Expired - Fee Related
-
1996
- 1996-10-24 CN CN95192998A patent/CN1085585C/en not_active Expired - Fee Related
- 1996-10-24 WO PCT/JP1996/003098 patent/WO1997015437A1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123430A (en) * | 1979-03-19 | 1980-09-22 | Hoya Corp | Preparation of lens forming mold |
| JPH03231814A (en) * | 1990-02-08 | 1991-10-15 | Hoya Corp | Manufacture of plastic lens and casting gasket for plastic lens |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09117921A (en) | 1997-05-06 |
| WO1997015437A1 (en) | 1997-05-01 |
| JP3705504B2 (en) | 2005-10-12 |
| CN1166153A (en) | 1997-11-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ASAHI LITE OPTICAL CO. Free format text: FORMER NAME OR ADDRESS: ASAHI LITE OPTICAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: Asahi Lite Optical Co., Ltd. Patentee before: Asahi Lite Optical Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020529 Termination date: 20111024 |