CN1951678A - Process for producing contact lens - Google Patents
Process for producing contact lens Download PDFInfo
- Publication number
- CN1951678A CN1951678A CN 200510109538 CN200510109538A CN1951678A CN 1951678 A CN1951678 A CN 1951678A CN 200510109538 CN200510109538 CN 200510109538 CN 200510109538 A CN200510109538 A CN 200510109538A CN 1951678 A CN1951678 A CN 1951678A
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- China
- Prior art keywords
- half module
- contact lenses
- module tool
- eyeglass
- grinding
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- 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.)
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a method for producing contact lens, which comprises: producing semi mould; preparing one concave mould, whose inner bottom curvature is same as the contact lens, to be used as shaping mould; molding blank that pouring liquid material into the semi mould to be dried into blank, while said blank and the semi mould form a composite; machining the blank that using machine bed to process the exposed blank into needed sphere shape; grinding the machine surface; removing mould that separating the mould and lens; grinding the edge of lens. The invention has high quality and efficiency.
Description
Technical field
The present invention relates to a kind of production method of contact lenses.
Background technology
The production method of existing contact lenses adopts the method for male and female face two facings, male and female face polishing both surfaces, and its shortcoming is a complex process, and product quality is difficult for guaranteeing that production efficiency is low.
Summary of the invention
Purpose of the present invention just provides a kind of production method of contact lenses, and to solve the complex process that prior art exists, product quality is difficult for guaranteeing the problem that production efficiency is low.
Technical scheme of the present invention is: may further comprise the steps:
(1) make the half module tool: make a punch, the curvature of its bottom outside is identical with the curvature of contact lenses, as the mould of contact lenses;
(2) moulding of blank material: the liquid charging stock of contact lenses injected drying forming is the lens blank material in the described half module tool, this lens blank material and half module tool form a complex;
(3) turning blank: cut the spherical shape that is processed into needs with the sidecar that lathe exposes the lens blank material on the described complex;
(4) grinding of turning surface: described turning surface is carried out surface grinding handle, to eliminate the vestige of turning;
(5) demoulding: eyeglass and half module tool are broken away from;
(6) grind spectacle lens edge.
The manufacturing process of described half module tool comprises:
(1) raw material stoving: an amount of BTI particulate material is put into baker oven dry back take out stand-by;
(2) injection machine is prepared: connect the injection machine power supply, opening power makes injection machine charging basket and injection moulding heating part reach the requirement temperature, then the BTI feed particulate material of having dried is joined in the charging basket;
(3) installation mold: described half module tool is installed on the injection machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4) injection moulding workpiece: configure the injection machine technological parameter by technological requirement, begin piece then;
(5) clean: the workpiece of accomplishing fluently is cleaned, dries;
(6) packing: the half module tool packing of cleaning after drying, carry out infrared sterilization, warehouse-in on request.
The manufacturing process of described blank material comprises:
(1) described half module tool oven dry, bake out temperature is 100 ℃;
(2) contact lenses liquid charging stock polymethylacrylic acid hydroxyl second fat (PHEMA) is cast in the half module tool after the oven dry;
(3) will be cast with contact lenses liquid charging stock and the oven dry of half module tool with road formula baking oven, it is three warm areas that road formula baking oven is divided into:
First warm area is 60 ℃～65 ℃, is the reflection district;
Second warm area is 80 ℃～85 ℃, is polymeric area;
The 3rd warm area is 101 ℃～108 ℃, is baking zone;
Three warm area drying times are 2.5～3 hours.
The grinding of described turning surface comprises: the eyeglass after the turning is installed on the positive axis surface grinding machine, adopts by polishing cloth, polishing sponge and polishing rotor and form the grinding cup, by the rotation of axle and the variation of putting, the eyeglass turning surface is carried out milled processed.
Described milling time is about 1 minute.
The described demoulding is carried out on centrifugal ingot stripper, promptly the eyeglass that has ground a side surface and half module tool is installed on the centrifugal ingot stripper and pushes, and eyeglass and half module tool are broken away from.
Described grind spectacle lens edge: the semi-finished lenses of finishing the demoulding is placed on the positive axis grinder and with vavuum pump eyeglass is adsorbed on fixedly on the suction nozzle, eyeglass and grinding-material rotate at an angle of 90 simultaneously, grind about 1 minute.
Advantage of the present invention is that technology is simple, good product quality, production efficiency height.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is the structural representation of half module tool of the present invention.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the present invention includes following steps:
1, half module tool: make a punch shown in Figure 2, its shape approximation cup type, bottom 7 is a spherical shape, and the curvature in the outside is identical with the curvature of contact lenses, and top 7 is as the mould of contact lenses, and cup dark 8 is as the cramping body in the production process.Cup body 8 has the step 9 along circumference, is used for positioning in process of production.The specific embodiment of half module tool is:
(1) raw material stoving: an amount of BTI particulate material (banning use of reworked material) is put into baker, and temperature is set at 100 ℃, toasts 30 minutes, takes out stand-by then.Note not being exposed in the air, prevent to get damp.
(2) injection machine is prepared: connect the injection machine power supply, opening power makes injection machine charging basket and injection moulding heating part reach the requirement temperature, then the BTI feed particulate material of having dried is joined in the charging basket.
(3) installation mold: corresponding mould is adorned on the injection machine on request, be in place.Note adjusting clamp force, make clamp force more as far as possible.
(4) injection moulding workpiece: configure the injection machine technological parameter by technological requirement, begin piece then.Want scrutiny for preceding 5, begin formal piece after qualified, check a subjob every half an hour.
(5) clean: the workpiece of accomplishing fluently is carried out ultrasonic wave clean, remove greasy dirt, use pure water wash clean, oven dry at last.
(6) packing: on request the glasses punch of cleaning after drying is packaged, on the packing batch number should be arranged.
(7) sterilization: carry out infrared sterilization, sterilization back warehouse-in.
2, the moulding of blank material: the liquid charging stock of contact lenses injected drying forming is the lens blank material in the described half module tool, this lens blank material and half module tool form a complex.Specific embodiment is as follows:
(1) described half module tool oven dry, bake out temperature is 100 ℃;
(2) contact lenses liquid charging stock polymethylacrylic acid hydroxyl second fat (PHEMA) is cast in the half module tool after the oven dry;
(3) will be cast with contact lenses liquid charging stock and the oven dry of half module tool with road formula baking oven, it is three warm areas that road formula baking oven is divided into:
First warm area is+62 ° ± 0.2, is the reflection district.
Second warm area is+82 ° ± 0.2, is polymeric area.
The 3rd warm area is+105 ° ± 0.2, is baking zone.
More than three warm area drying times be 2.5～3 hours.
Promptly be the blank material that contact lenses are treated turning after above operation is finished, eyeglass and half module tool are a complex blank.
3, turning blank: the blank raw material is fixed on the rotating shaft of lathe, adjusts center thickness, Guang Qu, edge thickness imaging.When rotating lathe tool by the rotation of rotating shaft with sphere the blank material being carried out turning shapes.
4, the grinding of turning surface:, handle so will carry out surface grinding because the lens surface of turning has the vestige of turning.Eyeglass after the turning is placed on+the axle surface grinding machine is with grinding cup (grinding cup is made up of polishing cloth, polishing sponge and polishing rotor).By the rotation of axle and the variation of putting, lens surface is carried out milled processed.Milling time is 1 minute.
5, the demoulding: the described demoulding is carried out on centrifugal ingot stripper, promptly the eyeglass that has ground a side surface and half module tool is installed on the centrifugal ingot stripper and pushes, and eyeglass and half module tool are broken away from.
6, grind spectacle lens edge: take off finishing that cured semi-finished lenses is placed on the positive axis grinder and eyeglass is inhaled on suction nozzle, eyeglass is fixed on the suction nozzle with vavuum pump.Eyeglass and grinding-material be rotation simultaneously at an angle of 90, grinds 1 minute, promptly produces contact lens of the present invention.
Claims (7)
1. the production method of contact lenses is characterized in that: may further comprise the steps:
(1) make the half module tool: make a punch, the curvature of its bottom inside is identical with the curvature of contact lenses, as the mould of contact lenses;
(2) moulding of blank material: the liquid charging stock of contact lenses injected drying forming is the lens blank material in the described half module tool, this lens blank material and half module tool form a complex;
(3) turning blank: cut the spherical shape that is processed into needs with the sidecar that lathe exposes the lens blank material on the described complex;
(4) grinding of turning surface: described turning surface is carried out surface grinding handle, to eliminate the vestige of turning;
(5) demoulding: eyeglass and half module tool are broken away from;
(6) grind spectacle lens edge.
2. the production method of contact lenses according to claim 1, it is characterized in that: the manufacturing process of described half module tool comprises:
(1) raw material stoving: an amount of BTI particulate material is put into baker oven dry back take out stand-by;
(2) injection machine is prepared: connect the injection machine power supply, opening power makes injection machine charging basket and injection moulding heating part reach the requirement temperature, then the BTI feed particulate material of having dried is joined in the charging basket;
(3) installation mold: described half module tool is installed on the injection machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4) injection moulding workpiece: configure the injection machine technological parameter by technological requirement, begin piece then;
(5) clean: the workpiece of accomplishing fluently is cleaned, dries;
(6) packing: the half module tool packing of cleaning after drying, carry out infrared sterilization, warehouse-in on request.
3. the production method of contact lenses according to claim 1, it is characterized in that: the manufacturing process of described blank material comprises:
(1) described half module tool oven dry, bake out temperature is 100 ℃;
(2) contact lenses liquid charging stock polymethylacrylic acid hydroxyl second fat (PHEMA) is cast in the half module tool after the oven dry;
(3) will be cast with contact lenses liquid charging stock and the oven dry of half module tool with road formula baking oven, it is three warm areas that road formula baking oven is divided into:
First warm area is 60 ℃～65 ℃, is the reflection district;
Second warm area is 80 ℃～85 ℃, is polymeric area;
The 3rd warm area is 101 ℃～108 ℃, is baking zone;
Three warm area drying times are 2.5～3 hours.
4. the production method of contact lenses according to claim 1, it is characterized in that: the grinding of described turning surface comprises: the eyeglass after the turning is installed on the positive axis surface grinding machine, employing is formed the grinding cup by polishing cloth, polishing sponge and polishing rotor, by the rotation of axle and the variation of putting, the eyeglass turning surface is carried out milled processed.
5. the production method of contact lenses according to claim 4, it is characterized in that: described milling time is about 1 minute.
6. the production method of contact lenses according to claim 1; it is characterized in that: the described demoulding is carried out on centrifugal ingot stripper; promptly the eyeglass that has ground a side surface and half module tool are installed on the centrifugal ingot stripper and push, eyeglass and half module tool are broken away from.
7. the production method of contact lenses according to claim 1, it is characterized in that: described grind spectacle lens edge: the semi-finished lenses of finishing the demoulding is placed on the positive axis grinder and eyeglass is adsorbed on fixedly on the suction nozzle with vavuum pump, eyeglass and grinding-material be rotation simultaneously at an angle of 90, grinds about 1 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510109538 CN1951678A (en) | 2005-10-21 | 2005-10-21 | Process for producing contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510109538 CN1951678A (en) | 2005-10-21 | 2005-10-21 | Process for producing contact lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1951678A true CN1951678A (en) | 2007-04-25 |
Family
ID=38058321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510109538 Pending CN1951678A (en) | 2005-10-21 | 2005-10-21 | Process for producing contact lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1951678A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162514A (en) * | 2013-02-22 | 2013-06-19 | 安徽省郎溪县韩星眼镜有限公司 | Drying method of contact lens shape blanks |
| CN104812558A (en) * | 2012-11-19 | 2015-07-29 | 埃西勒国际通用光学公司 | Method of manufacturing an optical lens |
| CN107791141A (en) * | 2016-08-31 | 2018-03-13 | 辽宁锐翔通用飞机制造有限公司 | A kind of composite propeller core mould and moulding process |
| CN108064758A (en) * | 2016-11-10 | 2018-05-25 | 青岛牧港畜牧机械有限公司 | Egg device manufacturing process is picked up in the rotation of cross wheel shape |
| CN109134747A (en) * | 2018-06-27 | 2019-01-04 | 周振宇 | The manufacturing method of contact lens material and contact lenses |
| CN110576556A (en) * | 2019-09-24 | 2019-12-17 | 江苏松德生物科技有限公司 | Production and processing technology of eye cup |
| CN114228207A (en) * | 2021-12-06 | 2022-03-25 | 江西科强光学有限公司 | Processing technology for manufacturing spectacle lens by using PLA (polylactic acid) particles |
-
2005
- 2005-10-21 CN CN 200510109538 patent/CN1951678A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812558A (en) * | 2012-11-19 | 2015-07-29 | 埃西勒国际通用光学公司 | Method of manufacturing an optical lens |
| CN104812558B (en) * | 2012-11-19 | 2017-05-10 | 埃西勒国际通用光学公司 | Method of manufacturing an optical lens |
| CN103162514A (en) * | 2013-02-22 | 2013-06-19 | 安徽省郎溪县韩星眼镜有限公司 | Drying method of contact lens shape blanks |
| CN107791141A (en) * | 2016-08-31 | 2018-03-13 | 辽宁锐翔通用飞机制造有限公司 | A kind of composite propeller core mould and moulding process |
| CN108064758A (en) * | 2016-11-10 | 2018-05-25 | 青岛牧港畜牧机械有限公司 | Egg device manufacturing process is picked up in the rotation of cross wheel shape |
| CN109134747A (en) * | 2018-06-27 | 2019-01-04 | 周振宇 | The manufacturing method of contact lens material and contact lenses |
| CN110576556A (en) * | 2019-09-24 | 2019-12-17 | 江苏松德生物科技有限公司 | Production and processing technology of eye cup |
| CN114228207A (en) * | 2021-12-06 | 2022-03-25 | 江西科强光学有限公司 | Processing technology for manufacturing spectacle lens by using PLA (polylactic acid) particles |
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Open date: 20070425 |