A vacuum coating machine for double-sided treatment of plastic lenses

Abstract

The present invention relates to the field of plastic lens coating treatment, and particularly to a vacuum coating machine for double-sided treatment of plastic lenses. A vacuum coating machine for double-sided treatment of plastic lenses according to the present invention is provided with an annular frame and an isolation chamber in a vacuum coating chamber. An inner plate is installed on the upper part to drive all the plastic lenses in the annular frame to sequentially enter the internal part of the arc-shaped channel structure of the isolation chamber. The infrared film thickness tester in the isolation chamber measures the thickness of the coating layers on both sides of the plastic lenses in turn, and the electric push rod timely covers and blocks the plastic lens with a qualified coating layer thickness on one side by the adjacent outer baffle or inner baffle, so that the coating treatment on this side of the plastic lens stops; it solves the technical problem that the staff cannot measure the thickness of the coating film on the plastic lens located in the vacuum coating machine during the coating treatment, resulting in a large number of plastic lenses with unqualified coating film thicknesses.

Description

Technical Field

[0001] The present invention relates to the field of plastic lens coating treatment, and particularly to a vacuum coating machine for double-sided treatment of plastic lenses. Background Art

[0002] The vacuum coating treatment process for plastic lenses is a processing technology that forms a thin film on the lens surface through physical deposition technology in a vacuum environment. The thickness of the vacuum coating can be controlled by adjusting the evaporation rate, temperature, and ion bombardment. Different from other materials, since the thickness and uniformity of the film layer on the plastic lens affect its light transmission effect, during the vacuum coating process of plastic lenses, the thickness and uniformity of the film layer on the plastic lens need to be strictly controlled. However, the vacuum coating machine performs the coating work in a closed vacuum environment, and the staff cannot measure the thickness of the film layer on the plastic lens located inside the vacuum coating machine during the coating process. Only after waiting for the coating work of all plastic lenses to end can the staff measure the thickness of the film layer on each plastic lens one by one. Therefore, after the coating work of the same batch of plastic lenses ends, there are often a certain number of plastic lenses whose film layer thickness exceeds the specified thickness standard or is much less than the specified thickness standard, ultimately resulting in a large number of plastic lenses with unqualified coating thickness being scrapped and wasted. Summary of the Invention

[0003] In order to overcome the drawback that the staff cannot measure the thickness of the film layer on the plastic lens located inside the vacuum coating machine during the coating process, resulting in a large number of plastic lenses with unqualified film layer thickness, the present invention provides a vacuum coating machine for double-sided treatment of plastic lenses.

[0004] The technical solution of the present invention is: a vacuum coating machine for double-sided treatment of plastic lenses, including a vacuum coating chamber, a lower fixed ring plate, an upper fixed ring plate, a sputtering target, a fixed rotating ring, an annular frame, a vertical plate, an outer baffle, an inner baffle, an isolation chamber, an infrared film thickness tester, and an electric push rod; a high-energy particle emission mechanism is arranged inside the vacuum coating chamber; the lower fixed ring plate is fixedly connected inside the vacuum coating chamber; the lower installation outer ring and the lower installation inner plate are connected to the lower fixed ring plate; the upper fixed ring plate is fixedly connected inside the vacuum coating chamber; the upper installation outer ring is connected to the upper fixed ring plate; the upper installation inner plate is rotatably connected inside the upper fixed ring plate, and the upper installation inner plate uses an electric turntable component; the sputtering target is fixedly connected together between the lower installation outer ring and the upper installation outer ring; the sputtering target is also fixedly connected to the lower installation inner plate; the upper end of the sputtering target on the lower installation inner plate is fixedly connected with a fixed rotating ring; the fixed rotating ring is rotatably connected to the upper installation inner plate; the annular frame is fixedly connected to the upper installation inner plate; several vertical plates are arranged on the annular frame; each vertical plate is provided with several clamping carriers for fixing plastic lenses; the outer surface of the annular frame is slidably connected with an outer baffle corresponding to the number and position of the clamping carriers; the inner surface of the annular frame is slidably connected with an inner baffle corresponding to the number and position of the clamping carriers; the isolation chamber is jointly installed between the lower fixed ring plate and the upper fixed ring plate; the right side of the annular frame is located in the arc-shaped channel structure inside the isolation chamber; two groups of infrared film thickness testers corresponding to the number and position of the clamping carriers on a single vertical plate are arranged in the arc-shaped channel structure of the isolation chamber, and the two groups of infrared film thickness testers are respectively located on the left and right sides of the arc-shaped channel structure of the isolation chamber; two groups of electric push rods corresponding to the number and position of the clamping carriers on a single vertical plate are arranged in the arc-shaped channel structure of the isolation chamber, and the two groups of electric push rods are respectively located on the left and right sides of the arc-shaped channel structure of the isolation chamber.

[0005] More preferably, the vertical plate is clamped on the annular frame through a plug-in structure.

[0006] More preferably, a layer of anti-slip sleeve is sleeved on the telescopic ends of all the electric push rods.

[0007] More preferably, an air inlet pipe is fixedly connected inside the isolation chamber; air jet pipes corresponding to the position and number of the infrared film thickness testers are fixedly connected inside the isolation chamber; all the air jet pipes are connected to the air inlet pipe.

[0008] More preferably, the air jet pipe is located in the middle of the corresponding infrared film thickness tester, and the air jet pipe is arranged in an annular structure.

[0009] More preferably, an air outlet pipe is fixedly connected inside the isolation chamber; air extraction pipes corresponding to the position and number of the infrared film thickness testers are fixedly connected inside the isolation chamber; all the air extraction pipes are connected to the air outlet pipe.

[0010] More preferably, the air extraction pipe is located outside the corresponding infrared film thickness tester.

[0011] More preferably, sealing rings are fixedly connected to the front side and the rear side of the arc-shaped channel structure of the isolation chamber.

[0012] Beneficial effects: In the vacuum coating machine for double-sided treatment of plastic lenses of the present invention, an upper mounting inner plate for driving the annular frame to rotate and an isolation chamber wrapping one side of the annular frame are provided in the vacuum coating chamber. During the coating process of the plastic lenses on each vertical plate in the annular frame by the high-energy particle emission mechanism on the vacuum coating chamber in cooperation with the sputtering target, the upper mounting inner plate drives all the plastic lenses in the annular frame to sequentially enter the interior of the arc-shaped channel structure of the isolation chamber. The infrared film thickness tester in the isolation chamber measures the thickness of the coating layers on both sides of the plastic lenses in sequence, and the electric push rod timely covers and blocks the plastic lens with the coating layer thickness on one side reaching the standard with the adjacent outer baffle or inner baffle, so that the coating treatment on that side of the plastic lens stops. In addition, an air inlet pipe for blowing cold air to the plastic lenses is also provided in the isolation chamber, which speeds up the condensation and forming speed of the coating layer on the surface of the plastic lenses, reduces the mismeasurement of the thickness of the coating layer on the surface of the plastic lenses, and improves the measurement accuracy of the thickness of the coating layer on the surface of the plastic lenses; it solves the technical problem that the staff cannot measure the thickness of the coating film on the plastic lenses located in the vacuum coating machine during the coating process, resulting in a large number of coating film thicknesses on the plastic lenses not meeting the standards. Description of the Drawings

[0013] Figure 1 Structure diagram of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0014] Figure 2 Structure diagram of the annular frame of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0015] Figure 3 Structure diagram of the lower fixed ring plate of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0016] Figure 4 Structure diagram of the upper fixed ring plate of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0017] Figure 5 Structure diagram of the vertical plate of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0018] Figure 6 Cross-sectional view of the isolation chamber structure of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0019] Figure 7 Structure diagram of the electric push rod of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0020] Figure 8 Structure diagram of the air jet pipe of the vacuum coating machine for double-sided treatment of plastic lenses of the present invention;

[0021] Figure 9 Structure diagram of the air extraction pipe of a vacuum coating machine for double-sided treatment of plastic lenses according to the present invention.

[0022] Reference numerals: 1 - vacuum coating chamber, 11 - lower fixed ring plate, 12 - lower mounting outer ring, 13 - lower mounting inner plate, 14 - upper fixed ring plate, 15 - upper mounting outer ring, 16 - upper mounting inner plate, 17 - sputtering target, 18 - fixed rotating ring, 2 - annular frame, 21 - vertical plate, 22 - clamping carrier, 23 - outer baffle, 24 - inner baffle, 3 - isolation chamber, 301 - arc-shaped channel structure, 31 - infrared film thickness tester, 32 - electric push rod, 33 - sealing ring, 41 - intake pipe, 42 - jet pipe, 51 - exhaust pipe, 52 - air extraction pipe. Detailed implementation manners

[0023] The present invention will be further described below with reference to the embodiments shown in the drawings. Embodiment 1

[0024] A vacuum coating machine for double-sided treatment of plastic lenses, as Figures 1 - 7As shown in the figure, it includes a vacuum coating chamber 1, a lower fixed ring plate 11, an upper fixed ring plate 14, a sputtering target 17, a fixed rotating ring 18, an annular frame 2, a vertical plate 21, an outer baffle 23, an inner baffle 24, an isolation chamber 3, an infrared film thickness tester 31 and an electric push rod 32; a high-energy particle emission mechanism is built in the vacuum coating chamber 1; the inner bottom of the vacuum coating chamber 1 is fixedly connected with the lower fixed ring plate 11; a lower mounting outer ring 12 and a lower mounting inner plate 13 are connected to the lower fixed ring plate 11; the inner top of the vacuum coating chamber 1 is fixedly connected with the upper fixed ring plate 14; an upper mounting outer ring 15 is connected to the upper fixed ring plate 14; an upper mounting inner plate 16 is rotatably connected inside the upper fixed ring plate 14, and the upper mounting inner plate 16 uses an electric turntable component; four sputtering targets 17 are fixedly connected together between the lower mounting outer ring 12 and the upper mounting outer ring 15; four sputtering targets 17 are also fixedly connected to the lower mounting inner plate 13; a fixed rotating ring 18 is fixedly connected together between the upper ends of the four sputtering targets 17 on the lower mounting inner plate 13; the fixed rotating ring 18 is rotatably connected to the upper mounting inner plate 16; an annular frame 2 is fixedly connected to the upper mounting inner plate 16; a number of vertical plates 21 are provided on the annular frame 2; a number of clamping carriers 22 for fixing plastic lenses are provided on each vertical plate 21; an outer baffle 23 corresponding to the number and position of the clamping carriers 22 is slidably connected to the outer surface of the annular frame 2; an inner baffle 24 corresponding to the number and position of the clamping carriers 22 is slidably connected to the inner surface of the annular frame 2; an isolation chamber 3 is installed together between the right sides of the lower fixed ring plate 11 and the upper fixed ring plate 14; an arc-shaped channel structure 301 is provided in the middle of the isolation chamber 3; one side of the annular frame 2 is located in the arc-shaped channel structure 301 inside the isolation chamber 3; two groups of infrared film thickness testers 31 corresponding to the number and position of the clamping carriers 22 on a single vertical plate 21 are provided in the arc-shaped channel structure 301 of the isolation chamber 3, and the two groups of infrared film thickness testers 31 are respectively located on the left and right sides of the arc-shaped channel structure 301 of the isolation chamber 3; two groups of electric push rods 32 corresponding to the number and position of the clamping carriers 22 on a single vertical plate 21 are provided in the arc-shaped channel structure 301 of the isolation chamber 3, and the two groups of electric push rods 32 are respectively located on the left and right sides of the arc-shaped channel structure 301 of the isolation chamber 3; an anti-slip sleeve is sleeved on the telescopic end of all the electric push rods 32, and the telescopic ends of the electric push rods 32 contact the corresponding outer baffle 23 and inner baffle 24 through the anti-slip sleeve, so as to avoid slipping during the contact process between the telescopic ends of the electric push rods 32 and the corresponding outer baffle 23 and inner baffle 24.

[0025] As Figure 2 and Figure 5 shown, the vertical plate 21 is clamped on the annular frame 2 through a plug-in structure, so that the vertical plate 21 can be quickly disassembled and assembled on the annular frame 2 through the plug-in structure. After the vertical plate 21 is removed from the annular frame 2, it can enable the staff to more conveniently install the plastic lenses in each clamping carrier 22 on the vertical plate 21.

[0026] The coating process steps of a vacuum coating machine for double-sided treatment of plastic lenses according to the present invention are as follows.

[0027] The staff installs all the plastic lenses into the clamping carriers 22 of each vertical plate 21 respectively. After clamping and fixing the vertical plate 21 with the plastic lens installed in the annular frame 2, the door of the vacuum coating chamber 1 is closed and the coating work is started. The upper mounting inner plate 16 drives the annular frame 2 and the connected vertical plates 21 to rotate counterclockwise from a top-down view, so that the annular frame 2 drives the plastic lenses in each vertical plate 21 to pass through the arc channel structure 301 of the isolation chamber 3 in sequence, and makes the plastic lenses on the annular frame 2 move relative to all the sputtering targets 17. At the same time, the high-energy particle emission mechanism built in the vacuum coating chamber 1 continuously emits high-energy particles towards the sputtering target 17 for bombardment. The coating produced by the continuous bombardment of the high-energy particles on the sputtering target 17 can evenly cover the surfaces of the plastic lenses on the annular frame 2 that are not located in the isolation chamber 3, realizing the coating treatment of the surfaces that need to be coated on both sides of all the plastic lenses on the annular frame 2.

[0028] The coating detection steps of a vacuum coating machine for double-sided treatment of plastic lenses according to the present invention are as follows.

[0029] When the annular frame 2 drives the plastic lens in a certain vertical plate 21 to pass through the arc-shaped channel structure 301 of the isolation cabin 3, the plastic lens in the vertical plate 21 is in the dark room formed by the arc-shaped channel structure 301 of the isolation cabin 3. Then, the infrared film thickness tester 31 on one side of the isolation cabin 3 measures the coating thickness of the plastic lens in the vertical plate 21 facing the infrared film thickness tester 31. The working principle of the coating thickness measurement is that the infrared film thickness tester 31 irradiates infrared rays to the coating surface on the same side of the plastic lens, and at the same time The intensity of the reflected infrared rays is measured, and the coating thickness is calculated according to the reflective ability of the coating to infrared rays. This method of measuring the coating thickness is a relatively mature existing technology and is widely used in measuring the thickness of coating films on the surfaces of various substrates. Then, the infrared film thickness tester 31 on the other side of the isolation cabin 3 measures the coating thickness of the other side of the plastic lens in the vertical plate 21 according to the same working principle. When a certain infrared film thickness tester 31 measures that the coating thickness of the corresponding plastic lens has reached the specified thickness standard, Taking the outer side of the plastic lens as an example, the corresponding telescopic end of the electric push rod 32 extends outward, so that the extended telescopic end of the electric push rod 32 is separated from the anti-slip sleeve and tightly presses the outer baffle plate 23. Then, when the annular frame 2 continues to drive the plastic lenses in each vertical plate 21 to rotate, the outer baffle plate 23 tightly pressed by the electric push rod 32 cannot move and generates a relative sliding displacement with the annular frame 2 until the outer baffle plate 23 covers the same side of the plastic lens whose coating thickness has reached the standard. Then, the electric push rod 32 controls the telescopic end to leave the outer baffle plate 23, and then the annular frame 2 continues to rotate. The plastic lenses in each vertical plate 21 are driven to leave the isolation cabin 3. At this time, the side of the plastic lens whose coating thickness has reached the standard is blocked and will no longer be covered by the coating sputtered from the sputtering target 17. The operation on the inner side of the plastic lens is also the same as the above process, so as to avoid the side of the plastic lens whose coating thickness has reached the standard from continuing to be coated. The coating thickness on both sides of each plastic lens can be detected and the side whose coating thickness has reached the standard can be shielded and protected in time, which greatly reduces the scrapping phenomenon of plastic lenses due to unsatisfactory coating thickness. Example 2

[0030] On the basis of Example 1, Figures 1 - 9As shown, in this embodiment, an air inlet pipe 41 is fixedly connected to the isolation cabin 3; air jet pipes 42 corresponding to the position and number of the infrared film thickness tester 31 are fixedly connected to the isolation cabin 3; all air jet pipes 42 are connected to the air inlet pipe 41; the air inlet pipe 41 is externally connected to a cold air flow conveying device; each air jet pipe 42 is located in the middle of a corresponding infrared film thickness tester 31, and the air jet pipe 42 is set to a ring structure; an air outlet pipe 51 is fixedly connected to the isolation cabin 3; exhaust pipes 52 corresponding to the position and number of the infrared film thickness tester 31 are fixedly connected to the isolation cabin 3; all exhaust pipes 42 are connected to the air inlet pipe 41; the air inlet pipe 41 is connected to the cold air flow conveying device; each air jet pipe 42 is located in the middle of a corresponding infrared film thickness tester 31, and the air jet pipe 42 is set to a ring structure; The tubes 52 are all connected to the air outlet pipe 51; the air outlet pipe 51 is externally connected to the air flow circulation equipment, and the air outlet end of the air flow circulation equipment is externally connected to the air inlet end of the cold air flow conveying equipment; each exhaust pipe 52 is located on the outside of a corresponding infrared film thickness tester 31, and the jet pipe 42 surrounds the infrared film thickness tester 31 through an annular structure; the front inlet end of the arc-shaped channel structure 301 of the isolation cabin 3 and the rear outlet end of the arc-shaped channel structure 301 are each fixedly connected with a sealing ring 33, and the isolation cabin 3 forms a closed space for the arc-shaped channel structure 301 through two sealing rings 33.

[0031] After the electric turntable component used for the inner plate 16 installed on the annular frame drives all the plastic lenses in one of the vertical plates 21 on the annular frame 2 to enter the arc-shaped channel structure 301 of the isolation cabin 3, the external cold air flow conveying device quickly conveys the cold air flow to each jet pipe 42 through the air inlet pipe 41, and the cold air flow is ejected from the annular jet pipe 42 to the middle of the corresponding plastic lens, and then the cold air flow quickly spreads around along the surface of the plastic lens, and then the external air flow circulation device immediately sucks away the cold air flow diffused along the surface of the plastic lens in time through each exhaust pipe 52 connected to the air outlet pipe 51, so as to prevent the ejected cold air flow from overflowing from the isolation cabin 3 to the vacuum coating. In the cabin 1, the vacuum environment inside the vacuum coating cabin 1 is seriously disturbed. This processing step can cool the surfaces of all plastic lenses in the vertical plate 21 inside the arc-shaped channel structure 301 entering the isolation cabin 3, thereby accelerating the molding speed of the coating on the surfaces of all plastic lenses in the vertical plate 21. The infrared film thickness tester 31 on both sides measures the thickness of the coating on both sides of the plastic lens respectively. After the coating on the surface of the plastic lens is formed, the thickness measurement is performed again to reduce the measurement error and reduce the mismeasurement of the thickness of the coating on the surface of the plastic lens. This processing method improves the measurement accuracy of the thickness of the coating on the surface of the plastic lens.

[0032] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A vacuum coating machine for double-sided treatment of plastic lenses, comprising: a vacuum coating chamber (1); a high-energy particle emission mechanism is built in the vacuum coating chamber (1); a lower fixed ring plate (11) and an upper fixed ring plate (14) are fixedly connected in the vacuum coating chamber (1); a lower mounting outer ring (12) and a lower mounting inner plate (13) are connected to the lower fixed ring plate (11); an upper mounting inner plate (16) is rotatably connected inside the upper fixed ring plate (14), and the upper mounting inner plate (16) uses an electric turntable component; a sputtering target (17) is fixedly connected to the lower mounting outer ring (12); a sputtering target (17) is also fixedly connected to the lower mounting inner plate (13); It is characterized in that: It further includes a vertical plate (21); an annular frame (2) is fixedly connected to the upper mounting inner plate (16); several vertical plates (21) are provided on the annular frame (2); several clamping carriers (22) for fixing plastic lenses are provided on the vertical plates (21); several outer baffles (23) for shielding the clamping carriers (22) are slidably connected to the outer surface of the annular frame (2); several inner baffles (24) for shielding the clamping carriers (22) are slidably connected to the inner surface of the annular frame (2); an isolation chamber (3) wrapping the right side of the annular frame (2) is jointly installed between the lower fixed ring plate (11) and the upper fixed ring plate (14); two groups of infrared film thickness testers (31) corresponding to the number and position of the clamping carriers (22) on a single vertical plate (21) are provided in the arc-shaped channel structure (301) of the isolation chamber (3), and the two groups of infrared film thickness testers (31) are respectively located on the left and right sides in the arc-shaped channel structure (301) of the isolation chamber (3); two groups of electric push rods (32) corresponding to the number and position of the clamping carriers (22) on a single vertical plate (21) are provided in the arc-shaped channel structure (301) of the isolation chamber (3), and the two groups of electric push rods (32) are respectively located on the left and right sides in the arc-shaped channel structure (301) of the isolation chamber (3); An air inlet pipe (41) is fixedly connected inside the isolation chamber (3); air jet pipes (42) corresponding to the position and number of the infrared film thickness testers (31) are fixedly connected inside the isolation chamber (3); all the air jet pipes (42) are connected to the air inlet pipe (41); The air jet pipe (42) is located in the middle of the corresponding infrared film thickness tester (31), and the air jet pipe (42) is set as an annular structure.

2. The vacuum coating machine for double-sided treatment of plastic lenses according to claim 1, wherein: The vertical plate (21) is clamped on the annular frame (2) through a plug-in structure.

3. A vacuum coating machine for double-sided treatment of plastic lenses according to claim 1, characterized in that: A layer of anti-slip sleeve is sleeved on the telescopic ends of all the electric push rods (32); the telescopic ends of the electric push rods (32) respectively contact the corresponding outer baffles (23) and inner baffles (24) through the anti-slip sleeves.

4. A double-sided processing vacuum coating machine for plastic lenses according to claim 1, characterized in that: An air outlet pipe (51) is fixedly connected inside the isolation chamber (3); air extraction pipes (52) corresponding to the position and number of the infrared film thickness testers (31) are fixedly connected inside the isolation chamber (3); all the air extraction pipes (52) are connected to the air outlet pipe (51); 5. The vacuum coating machine for double-sided treatment of plastic lenses according to claim 4, characterized in that: The air extraction pipe (52) is located outside the corresponding infrared film thickness tester (31), and the air jet pipe (42) is set as an annular structure.

6. A double-sided treatment vacuum coating machine for plastic lenses according to any one of claims 1-5, characterized in that: Sealing rings (33) are fixedly connected to the front side and the rear side of the arc-shaped channel structure (301) of the isolation chamber (3).

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