CN115505893A - Coating machine control method and system based on optical lens coating - Google Patents
Coating machine control method and system based on optical lens coating Download PDFInfo
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- CN115505893A CN115505893A CN202211194808.9A CN202211194808A CN115505893A CN 115505893 A CN115505893 A CN 115505893A CN 202211194808 A CN202211194808 A CN 202211194808A CN 115505893 A CN115505893 A CN 115505893A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/10—Glass or silica
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Optical Elements (AREA)
Abstract
The invention discloses a method and a system for controlling a film plating machine based on optical lens film plating, which comprises the following steps: s1, fixing the position of an optical lens in a coating chamber through a workpiece disc; s2, carrying out vacuum pumping treatment on the coating chamber through a vacuum pump; s3, performing radio frequency cleaning on the optical lens after vacuumizing, wherein the invention has the beneficial effects that: through carrying out the radio frequency to optical lens piece clean, the radio frequency power supply under through the vacuum state separates and takes out optical lens piece's surface impurity and dust, thereby clean optical lens piece fast, through carrying out image acquisition to optical lens piece, thereby carry out accurate location to the position of needs coating film and handle, the stability and the work efficiency of coating film have been improved, adjust the coating by vaporization angle of work piece dish when the coating film, carry out the coating by vaporization angle according to optical lens piece's concave surface and convex surface to the position of needs coating film and adjust, the efficiency of work has been improved.
Description
Technical Field
The invention relates to the technical field of coating, in particular to a method and a system for controlling a coating machine based on optical lens coating.
Background
The glass originally used for making lenses, which is a knob on a common window glass or wine bottle, is shaped like a "crown", from which the name crown glass or crown glass comes. The glass was very non-uniform and foamy at that time. In addition to the crown glass, there is another flint glass that is relatively high in lead content. It was found in about 1790 by French skinned and Louis and Tonner that glass with a uniform texture could be produced by stirring the glass paste. In 1884, the inster abbe and otto schottky of zeiss company created schottky glass factories in jena, germany, and dozens of optical glasses were developed in several years, wherein the invention of barium crown glass with high refractive index is one of important achievements of the schottky glass factories, and the optical lens needs to be subjected to light transmission enhancement treatment by coating in the existing optical lens, but the existing optical lens coating machine is inconvenient to control and adjust treatment according to different optical lens shapes and different coating surface sizes during control, and the coating accuracy is lower.
Disclosure of Invention
The invention aims to provide a method and a system for controlling a film plating machine based on optical lens film plating, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a control method of a film plating machine based on optical lens film plating comprises the following steps:
s1, fixing the position of an optical lens in a coating chamber through a workpiece disc;
s2, carrying out vacuum pumping treatment on the coating chamber through a vacuum pump;
s3, performing radio frequency cleaning on the optical lens after vacuumizing;
s4, carrying out image acquisition processing on the optical lens after the radio frequency cleaning;
s5, automatically shielding the surface which does not need to be coated;
s6, calculating the area of the optical lens needing film coating, and calculating the raw materials;
s7, pre-coating the lens;
s8, after pre-coating, heating the coating chamber to 50-70 ℃, and evaporating a blue-proof film and a reflecting film;
s9, adjusting the evaporation angle of the workpiece disc according to the position of the film coating surface;
and S10, detecting the light transmittance of the optical lens, and taking out the optical lens after the optical lens is qualified.
Preferably, the rf cleaning in S3 specifically includes the following steps:
s31, pumping the air pressure in the coating chamber to 5-10Pa, and performing primary radio frequency cleaning by using a radio frequency power supply with the frequency of 10-18MHz and the power of 700-900W in a vacuum state;
s32, pumping the air pressure in the coating chamber to 11-20Pa, and performing secondary radio frequency cleaning by using a radio frequency power supply with the frequency of 20-30MHz and the power of 1000-1400W in a vacuum state;
and S33, extracting the generated volatile substances through the gas flow of the negative pressure pipeline.
Preferably, the image acquisition process in S4 specifically includes the following steps:
s41, carrying out image shooting processing on each optical lens on the workpiece disc;
and S42, constructing an image model of the optical lens through the shot image.
Preferably, the step of performing automatic shielding processing on the surface not requiring film plating in the step S5 specifically includes the following steps:
s51, identifying the film coating surface of the optical lens;
s52, installing the shielding block on the workpiece disc through the mechanical arm, and covering and shielding the position of the optical lens, which does not need to be coated with a film.
Preferably, the calculating of the raw materials in S6 specifically includes the following steps:
s61, obtaining a numerical value of the area of the plating film;
s62, calculating the weight of the coating raw material by 2-4 times of the numerical value of the coating area.
Preferably, the starting material is silica.
Preferably, the pre-plating treatment in S7 specifically includes the following steps:
s71, uniformly paving silicon dioxide at the bottom of a coating chamber;
s72, heating the silicon dioxide at 900-1300 ℃;
and S73, heating and evaporating the silicon dioxide, and adhering the silicon dioxide to the surface of the optical lens through evaporation.
Preferably, the step S9 of adjusting the evaporation angle of the workpiece tray according to the position of the film coating surface includes the following steps:
s91, identifying the curvature diameters of the concave surface and the convex surface of the film coating surface of the optical lens;
s92, adjusting the evaporation angle of a workpiece disc of the optical lens during film coating;
s93, when the curvature radius of the concave surface and the convex surface is less than 4, adjusting the evaporation angle to 55-65 degrees;
and S94, when the curvature radius of the concave surface and the convex surface is more than or equal to 4, adjusting the evaporation angle to 70-75 degrees.
A coating machine control system based on optical lens coating comprises a coating machine control terminal, an image acquisition unit, a coating raw material calculation unit and a coating adjustment unit, wherein the output end of the image acquisition unit is electrically connected with the input end of the coating raw material calculation unit, the output end of the image acquisition unit is electrically connected with the input end of the coating adjustment unit, and the image acquisition unit, the coating raw material calculation unit and the coating adjustment unit are all in bidirectional connection with the coating machine control terminal;
the coating machine control terminal is used for carrying out data centralized control processing on the optical lens coating machine;
the image acquisition unit is used for acquiring an image of the optical lens and establishing an image model;
the coating raw material calculating unit is used for calculating the amount of the coating raw material according to the area size of the coating;
the coating adjusting unit is used for correspondingly adjusting the angles of the lenses according to different coating positions.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Compared with the prior art, the invention has the beneficial effects that: through carrying out the radio frequency to optical lens piece clean, surface impurity and the dust of optical lens piece are separated and are taken out through the radio frequency power supply under the vacuum state, thereby clean optical lens piece fast, through carrying out image acquisition to optical lens piece, thereby carry out accurate location to the position of needs coating film and handle, the stability and the work efficiency of coating film have been improved, adjust the coating by vaporization angle of work piece dish when the coating film, carry out the coating by vaporization angle according to concave surface and the convex surface of optical lens piece to the position of needs coating film and adjust, the efficiency of work has been improved.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a control method of a film plating machine based on optical lens film plating comprises the following steps:
s1, fixing the position of an optical lens in a coating chamber through a workpiece disc, and stabilizing the position of the optical lens during coating through the workpiece disc, so that the stability of coating is improved;
s2, carrying out vacuum pumping treatment on the coating chamber through a vacuum pump;
s3, performing radio frequency cleaning on the optical lens after vacuumizing;
s4, carrying out image acquisition processing on the optical lens after the radio frequency cleaning;
s5, automatically shielding the surface which does not need to be coated with a film, carrying out model setting processing on the image of the optical lens, and then shielding the position which does not need to be coated with the film, so that the accuracy of coating is improved;
s6, calculating the area of the optical lens needing film coating, and calculating the raw materials;
s7, pre-coating the lens;
s8, after pre-coating, heating the coating chamber to 50-70 ℃, and evaporating a blue-proof film and a reflecting film;
s9, adjusting the evaporation angle of the workpiece disc according to the position of the film coating surface, adjusting the evaporation angle according to the position of the film coating surface in a film coating chamber, and improving the stability and the working efficiency of evaporation, wherein the film coating is formed by coating a very thin transparent film on the surface, when light enters different transfer substances, 5% of the light is reflected, and a plurality of lenses and refractors are arranged in the optical sighting telescope, so that the total addition can lead the incident light loss to reach 30% -40%;
and S10, detecting the light transmittance of the optical lens, and taking out the optical lens after the optical lens is detected to be qualified.
The radio frequency cleaning in the step S3 specifically includes the following steps:
s31, pumping the air pressure in the coating chamber to 5-10Pa, and performing primary radio frequency cleaning by using a radio frequency power supply with the frequency of 10-18MHz and the power of 700-900W in a vacuum state;
s32, pumping the air pressure in the film coating chamber to 11-20Pa, performing secondary radio frequency cleaning by using a radio frequency power supply with the frequency of 20-30MHz and the power of 1000-1400W in a vacuum state, and cleaning the surface of the optical lens by primary radio frequency cleaning and secondary radio frequency cleaning to improve the stability and the working efficiency of cleaning, wherein the compression ratio is the ratio of the discharge pressure (absolute pressure) to the suction pressure (absolute pressure) of evacuation equipment, and excessively high or excessively low compression ratio can cause excessive steam consumption and is uneconomical, so that the compression ratio of each stage of an evacuator of the reduced-ceiling vacuum system needs to be optimized, the energy consumption of the vacuum system is reduced, the pumped air pressure is changed, the frequency of the radio frequency power supply is changed, and the stability of detection on the film coating quality of the optical lens is improved;
and S33, extracting the generated volatile substances through the negative pressure pipeline gas flow.
The image acquisition processing in S4 specifically includes the following steps:
s41, carrying out image shooting processing on each optical lens on the workpiece disc;
s42, constructing an image model of the optical lens through the shot image, and establishing the image model of the optical lens, so that the optical lens is subjected to better recognition coating treatment.
The step of automatically shielding the surface which does not need to be coated in the step S5 specifically comprises the following steps:
s51, identifying the film coating surface of the optical lens;
s52, the shielding block is installed on the workpiece disc through the mechanical arm, the position, where the optical lens does not need to be coated, is covered and shielded, the position, where the coating is not needed, is shielded, and accuracy and stability of coating are improved.
The step of calculating the raw materials in the step S6 specifically comprises the following steps:
s61, obtaining a numerical value of the area of the plated film;
s62, calculating the weight of the coating raw material by 2-4 times of the numerical value of the coating area, and calculating the weight of the coating raw material by the size of the coating area, so that the sufficient coating raw material is ensured, and the stability of coating is improved.
Wherein the raw material is silicon dioxide.
The pre-coating treatment in the step S7 specifically comprises the following steps:
s71, uniformly paving the silicon dioxide on the bottom of the coating chamber;
s72, heating the silicon dioxide at 900-1300 ℃, controlling the heating temperature of the silicon dioxide at 900-1300 ℃, wherein the silicon dioxide is an acidic oxide which is solid at normal temperature, is insoluble in water, acid and hydrofluoric acid and hot concentrated phosphoric acid and can react with molten alkali. The boiling point of the silicon dioxide is 2230 ℃, the heating temperature is controlled to 900-1300 ℃, so that the surface of the silicon dioxide volatilizes and adheres to the coating surface of the optical lens, and the stability of the coating of the optical lens is improved;
and S73, heating and evaporating the silicon dioxide, attaching the silicon dioxide to the surface of the optical lens, heating and evaporating the silicon dioxide, and attaching the silicon dioxide evaporant to the optical lens for film coating treatment after evaporation, so that the film coating efficiency is improved.
The step S9 of adjusting the evaporation angle of the workpiece disc according to the position of the film coating surface specifically comprises the following steps:
s91, identifying the curvature diameters of the concave surface and the convex surface of the film coating surface of the optical lens;
s92, adjusting the evaporation angle of a workpiece disc of the optical lens during film coating;
s93, when the curvature radius of the concave surface and the convex surface is less than 4, adjusting the evaporation angle to 55-65 degrees;
s94, when the curvature radiuses of the concave surface and the convex surface are more than or equal to 4, the evaporation angle is adjusted to 70-75 degrees, evaporation angle adjustment treatment is carried out according to the curvature radiuses of the concave surface and the convex surface, the coating angle is adjusted according to different convex surfaces and curved surfaces, the definition of the convex surface is that a tangent plane is made at any point on the cross surface, the surface is always below the tangent plane, the definition of the concave surface is that a tangent plane is made at any point on the cross surface, the surface is always above the tangent plane, if a tangent plane is made at any point on the cross surface, some surfaces are above the tangent plane, and some surfaces are below the tangent plane, the surface is provided with the convex surface and the concave surface, the evaporation angle is adjusted according to the concave surface and the convex surface of the coating surface, the uneven coating of each position due to unevenness of the coating surface is prevented, and the stability and the efficiency of the coating are reduced.
A coating machine control system based on optical lens coating comprises a coating machine control terminal, an image acquisition unit, a coating raw material calculation unit and a coating adjustment unit, wherein the output end of the image acquisition unit is electrically connected with the input end of the coating raw material calculation unit, the output end of the image acquisition unit is electrically connected with the input end of the coating adjustment unit, and the image acquisition unit, the coating raw material calculation unit and the coating adjustment unit are all in two-way connection with the coating machine control terminal;
the coating machine control terminal is used for carrying out data centralized control processing on the optical lens coating machine and carrying out centralized control on the data of the coating machine, so that the working efficiency and the stability of the coating machine are improved;
the image acquisition unit is used for acquiring an image of the optical lens and establishing an image model;
the coating raw material calculating unit is used for calculating the amount of the coating raw material according to the coating area;
the coating adjusting unit is used for correspondingly adjusting the angles of the lenses according to different coating positions.
Embodiment 1, a method for controlling a coating machine based on optical lens coating, comprising the steps of:
s1, fixing the position of an optical lens in a coating chamber through a workpiece disc;
s2, carrying out vacuum pumping treatment on the coating chamber through a vacuum pump;
s3, after vacuumizing, pumping the air pressure in a coating chamber of the optical lens to 5Pa, performing primary radio frequency cleaning by using a radio frequency power supply with the frequency of 10MHz and the power of 700W under the vacuum state, pumping the air pressure in the coating chamber to 11Pa, performing secondary radio frequency cleaning by using a radio frequency power supply with the frequency of 20MHz and the power of 1000W under the vacuum state, and pumping out generated volatile substances through negative pressure pipeline gas flow, wherein the compression ratio is the ratio of the exhaust pressure (absolute pressure) and the suction inlet pressure (absolute pressure) of evacuation equipment, and excessively high or excessively low compression ratio can bring about excessive steam consumption and uneconomic consumption, so that the compression ratio of each stage of an evacuator of a reduced-ceiling evacuation system needs to be optimized, thereby reducing the energy consumption of the vacuum system, changing the pumped air pressure, changing the frequency of the radio frequency power supply and improving the detection stability of the coating quality of the optical lens;
s4, carrying out image shooting processing on each optical lens on the workpiece disc after the radio frequency cleaning, and constructing an image model of each optical lens through the shot image;
s5, identifying the film coating surface of the optical lens, installing a shielding block on the workpiece disc through a mechanical arm, and covering and shielding the position of the optical lens where film coating is not needed;
s6, calculating the area of the optical lens needing to be coated to obtain a numerical value of the coated area, and calculating the weight of the coated silicon dioxide by 2 times of the numerical value of the coated area;
s7, uniformly paving the silicon dioxide at the bottom of a coating chamber, heating the silicon dioxide at 900 ℃, evaporating the silicon dioxide after heating, and attaching the silicon dioxide to the surface of the optical lens by evaporation, wherein the heating temperature of the silicon dioxide is controlled at 900 ℃, the silicon dioxide is an acidic oxide which is solid at normal temperature, is insoluble in water, is insoluble in acid, is soluble in hydrofluoric acid and hot concentrated phosphoric acid and can act with molten alkalis. The boiling point of the silicon dioxide is 2230 ℃, the heating temperature is controlled at 900 ℃, so that the surface of the silicon dioxide volatilizes and adheres to the coating surface of the optical lens, and the coating stability of the optical lens is improved;
s8, after pre-coating, heating the coating chamber to 50 ℃, and evaporating a blue-light-proof film and an evaporation reflection film;
s9, identifying the curvature diameters of a concave surface and a convex surface of a film coating surface of the optical lens, adjusting the evaporation angle of a workpiece disc of the optical lens during film coating, when the curvature radius of the concave surface and the convex surface is less than 4, adjusting the evaporation angle to 55 degrees, when the curvature radius of the concave surface and the convex surface is more than or equal to 4, adjusting the evaporation angle to 70 degrees, defining the convex surface as a tangent plane at any point on the cross surface, wherein the surface is always below the tangent plane, the concave surface is defined as a tangent plane at any point on the cross surface, the surface is always above the tangent plane, if any point on the cross surface is a tangent plane, and some surface is above the tangent plane and below the tangent plane, the surface has both a convex surface and a concave surface, adjusting the evaporation angle according to the concave surface and the convex surface of the film coating surface prevents the film coating surface from uneven film coating at each position due to unevenness during film coating, the stability and the efficiency of the film coating are reduced, the film coating is a transparent film coated on the surface, when light enters different refraction materials, 5% can be reflected, and a plurality of lenses and the aiming lens and the whole incidence loss can be increased by 40% -40%;
and S10, detecting the light transmittance of the optical lens, and taking out the optical lens after the optical lens is qualified.
Embodiment 2, a method for controlling a coating machine based on optical lens coating, comprising the steps of:
s1, fixing the position of an optical lens in a coating chamber through a workpiece disc;
s2, carrying out vacuum pumping treatment on the coating chamber through a vacuum pump;
s3, after vacuumizing, pumping the air pressure in a coating chamber of the optical lens to 10Pa, performing primary radio frequency cleaning by using a radio frequency power supply with the frequency of 18MHz and the power of 900W under a vacuum state, pumping the air pressure in the coating chamber to 20Pa, performing secondary radio frequency cleaning by using a radio frequency power supply with the frequency of 30MHz and the power of 1400W under the vacuum state, and pumping out generated volatile substances through negative pressure pipeline gas flow, wherein the compression ratio is the ratio of the exhaust pressure (absolute pressure) to the suction inlet pressure (absolute pressure) of evacuation equipment, and excessively high or excessively low compression ratio can bring about excessive steam consumption and uneconomic consumption, so that the compression ratio of each stage of an evacuator of a reduced-ceiling evacuation system needs to be optimized, thereby reducing the energy consumption of the vacuum system, changing the pumped air pressure, changing the frequency of the radio frequency power supply and improving the detection stability of the coating quality of the optical lens;
s4, carrying out image shooting processing on each optical lens on the workpiece disc after the radio frequency cleaning, and constructing an image model of each optical lens through the shot image;
s5, identifying the film coating surface of the optical lens, installing a shielding block on the workpiece disc through a mechanical arm, and covering and shielding the part of the optical lens, which does not need to be coated with a film;
s6, calculating the area of the optical lens needing to be coated with the film to obtain a numerical value of the area of the coated film, and calculating the weight of the coated silicon dioxide by 4 times of the numerical value of the area of the coated film;
s7, uniformly paving the silicon dioxide at the bottom of a film coating chamber, heating the silicon dioxide at 1300 ℃, evaporating the silicon dioxide after heating, and attaching the silicon dioxide to the surface of the optical lens, wherein the heating temperature of the silicon dioxide is controlled at 1300 ℃, the silicon dioxide is an acidic oxide and is solid at normal temperature, and the silicon dioxide is insoluble in water, insoluble in acid, soluble in hydrofluoric acid and hot concentrated phosphoric acid and capable of acting with molten alkali. The boiling point of the silicon dioxide is 2230 ℃, the heating temperature is controlled at 1300 ℃, so that the surface of the silicon dioxide volatilizes and adheres to the coating surface of the optical lens, and the coating stability of the optical lens is improved;
s8, after pre-coating, heating the coating chamber to 70 ℃, and evaporating a blue-proof film and a reflecting film;
s9, identifying the curvature diameters of a concave surface and a convex surface of a film coating surface of the optical lens, adjusting the evaporation angle of a workpiece disc of the optical lens during film coating, wherein when the curvature radius of the concave surface and the convex surface is less than 4, the evaporation angle is adjusted to 65 degrees, when the curvature radius of the concave surface and the convex surface is more than or equal to 4, the evaporation angle is adjusted to 75 degrees, the convex surface is defined as a tangent plane made at any point on the cross surface, the surface is always below the tangent plane, the concave surface is defined as a tangent plane made at any point on the cross surface, the surface is always above the tangent plane, if any point on the cross surface is made as the tangent plane, some surface is above the tangent plane, and some surface is below the tangent plane, the surface has both a convex surface and a concave surface, the evaporation angle is adjusted according to the concave surface and the convex surface of the film coating surface, so that the film coating surface is prevented from being uneven at each position during film coating, and the stability and efficiency of the film coating are reduced;
and S10, detecting the light transmittance of the optical lens, and taking out the optical lens after the optical lens is detected to be qualified.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
Claims (9)
1. A control method of a film plating machine based on optical lens film plating is characterized by comprising the following steps:
s1, fixing the position of an optical lens in a coating chamber through a workpiece disc;
s2, carrying out vacuum pumping treatment on the coating chamber through a vacuum pump;
s3, performing radio frequency cleaning on the optical lens after vacuumizing;
s4, carrying out image acquisition processing on the optical lens after the radio frequency cleaning;
s5, automatically shielding the surface which does not need to be coated;
s6, calculating the area of the optical lens to be coated, and calculating the raw materials;
s7, pre-coating the lens;
s8, after pre-coating, heating the coating chamber to 50-70 ℃, and evaporating a blue-proof film and a reflecting film;
s9, adjusting the evaporation angle of the workpiece disc according to the position of the film coating surface;
and S10, detecting the light transmittance of the optical lens, and taking out the optical lens after the optical lens is detected to be qualified.
2. The method as claimed in claim 1, wherein the rf cleaning in S3 comprises the following steps:
s31, pumping the air pressure in the coating chamber to 5-10Pa, and performing primary radio frequency cleaning by using a radio frequency power supply with the frequency of 10-18MHz and the power of 700-900W in a vacuum state;
s32, pumping the air pressure in the coating chamber to 11-20Pa, and performing secondary radio frequency cleaning by using a radio frequency power supply with the frequency of 20-30MHz and the power of 1000-1400W in a vacuum state;
and S33, extracting the generated volatile substances through the negative pressure pipeline gas flow.
3. The method as claimed in claim 2, wherein the image capturing process in S4 comprises the following steps:
s41, carrying out image shooting processing on each optical lens on the workpiece disc;
and S42, constructing an image model of the optical lens through the shot image.
4. The method as claimed in claim 3, wherein the step of performing the automatic masking on the surface not to be coated in step S5 comprises the following steps:
s51, identifying the film coating surface of the optical lens;
s52, installing the shielding block on the workpiece disc through the mechanical arm, and covering and shielding the position of the optical lens, which does not need to be coated with a film.
5. The method as claimed in claim 4, wherein the calculation of the raw materials in S6 includes the following steps:
s61, obtaining a numerical value of the area of the plating film;
s62, calculating the weight of the coating raw material by 2-4 times of the numerical value of the coating area.
6. The method as claimed in claim 5, wherein the raw material is silica.
7. The method as claimed in claim 6, wherein the pre-coating process in step S7 comprises the following steps:
s71, uniformly paving silicon dioxide at the bottom of a coating chamber;
s72, heating the silicon dioxide at 900-1300 ℃;
and S73, heating and evaporating the silicon dioxide, and adhering the silicon dioxide to the surface of the optical lens.
8. The method as claimed in claim 7, wherein the step of adjusting the evaporation angle of the workpiece tray according to the position of the coating surface in step S9 comprises the steps of:
s91, identifying the curvature diameters of the concave surface and the convex surface of the film coating surface of the optical lens;
s92, adjusting the evaporation angle of a workpiece disc of the optical lens during film coating;
s93, when the curvature radius of the concave surface and the convex surface is less than 4, adjusting the evaporation angle to 55-65 degrees;
and S94, when the curvature radius of the concave surface and the convex surface is more than or equal to 4, adjusting the evaporation angle to 70-75 degrees.
9. The system of any one of claims 1 to 8, comprising a coater control terminal, an image acquisition unit, a coating material calculation unit and a coating adjustment unit, wherein the output of the image acquisition unit is electrically connected to the input of the coating material calculation unit, the output of the image acquisition unit is electrically connected to the input of the coating adjustment unit, and the image acquisition unit, the coating material calculation unit and the coating adjustment unit are all bidirectionally connected to the coater control terminal;
the coating machine control terminal is used for carrying out data centralized control processing on the optical lens coating machine;
the image acquisition unit is used for acquiring an image of the optical lens and establishing an image model;
the coating raw material calculating unit is used for calculating the amount of the coating raw material according to the area size of the coating;
the coating adjusting unit is used for correspondingly adjusting the angles of the lenses according to different coating positions.
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