A vacuum coating jig for optical lenses

Abstract

The present invention relates to the field of coating technology, and in particular to a vacuum coating jig for optical lenses, comprising a shell, a side wall of the shell being provided with an interlayer, the interior of the interlayer being provided with a spiral heat conduction pipe, the interior of the shell being provided with a vacuum coating cavity, a rodless cylinder being fixedly connected to the right side of the vacuum coating cavity, a coating emission source being provided on the left side of the rodless cylinder, a motor being fixedly connected to the outer surface of the bottom end of the shell, a disc group being fixedly connected to the rotating shaft of the motor, a fastening mechanism being fixedly connected to the upper surface of the disc group, the fastening mechanism comprising a plurality of spring groups, the outer surface of each spring group being provided with a rubber coating, a fastening mechanism being fixedly connected to the disc group, the fastening mechanism comprising a plurality of spring groups, the disc being driven to rotate by the rotation of the rotating shaft of the motor, so that the optical lens is evenly coated, the elasticity of the spring is utilized to form a lens placement rack suitable for different specifications, which is suitable for fastening lenses of different specifications and improving the actual performance of the vacuum coating machine for optical lenses.

Description

Technical Field

[0001] The present invention relates to the field of coating technology, and in particular to a vacuum coating jig for optical lenses. Background Art

[0002] Vacuum coating machine mainly refers to a type of coating that needs to be carried out under a higher vacuum degree. There are many types, including vacuum resistance heating evaporation, magnetron sputtering and many other types. The main idea is to divide it into evaporation and sputtering. The substrate to be coated is called the substrate, and the material to be coated is called the target material. The substrate and the target material are in the same vacuum chamber. Evaporation coating generally heats the target material to evaporate the surface components in the form of atomic groups or ions, which are deposited on the surface of the substrate and form a thin film through the film forming process.

[0003] Vacuum coating of optical lenses can reduce reflected light on the lens surface, making vision clearer, increasing light transmittance, solving the problem of taking photos under strong light, and increasing aesthetics. In addition, coated lenses can prevent damage to vision caused by ultraviolet rays, infrared rays and X-rays, thus protecting the eyesight of people working in front of the screen.

[0004] In the prior art, the coating operation for optical lenses is to place the lenses in a coating machine, and under vacuum conditions, evaporate a layer or multiple layers of film from an evaporation source upward on the lens substrate. During this process, the optical lenses need to be placed on a placement rack. Traditional placement racks are difficult to adjust to accommodate lenses of different shapes and thicknesses. One placement rack can often only hold optical lenses of one specification, which has great limitations.

[0005] In view of this, in order to overcome the above technical problems, the present invention designs a vacuum coating jig for optical lenses to solve the above technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: the optical lens vacuum coating jig provided by the present invention enables the lens placement rack in the vacuum coating machine to adapt to lenses of different shapes and thicknesses, thereby improving the actual performance of the vacuum coating machine.

[0007] The present invention provides a vacuum coating jig for optical lenses, comprising a shell, an interlayer, a spiral heat-conducting pipe, a vacuum coating chamber, a rodless cylinder, a coating emission source, a motor, a disc and a fastening mechanism; the shell side wall is provided with an interlayer, a plurality of spiral heat-conducting pipes evenly placed in a vertical direction are provided inside the interlayer, a vacuum coating chamber is provided inside the shell, a rodless cylinder, a coating emission source, a disc and a fastening mechanism are provided inside the vacuum coating chamber, a rodless cylinder is fixedly connected to the right side of the vacuum coating chamber, a slider is slidably connected to the rodless cylinder, a coating emission source is fixedly connected to the left side of the slider, a motor is fixedly connected to the outer surface of the bottom end of the shell, a rotating shaft of the motor passes through the shell and extends into the vacuum coating chamber, a bearing is fixedly connected to the rotating shaft of the motor, an outer surface of the bearing is fixedly connected to the inner surface of the bottom end of the shell, a plurality of discs are evenly fixed on the rotating shaft of the motor along the axial direction, and the upper surfaces of the plurality of discs are fixedly connected to the fastening mechanism;

[0008] Wherein, the fastening mechanism includes at least three springs, and the lower surfaces of the three spring groups are fixedly connected to the upper surface of the disc.

[0009] Preferably, a plurality of circular rings evenly placed in the vertical direction are fixedly connected to the left side of the vacuum coating chamber, a plurality of concave grooves are passed through the right side of the circular rings, a plurality of sealing rings are fixedly connected to the inner walls of the circular rings, a concave groove is passed through the right side of the sealing ring, the sealing ring is rotatably connected to the disc, a concave groove is passed through the disc near the right side, a rubber sheet is fixedly connected to the outer surface of the concave groove on the disc, the right side of the rubber sheet is in contact with the right inner wall of the sealing ring, an opening is provided on the rubber sheet, the width of the concave groove is greater than the width of the coating emission source, and the width of the concave groove is greater than the width of the slider.

[0010] Preferably, the diameter of the circle is smaller than the diameter of the lens to be coated, and the gap between the upper and lower layers of the spring coils is smaller than the thickness of the lens to be coated.

[0011] Preferably, the outer surface of the spring is provided with a rubber coating, and a groove is provided on the rubber coating between the upper and lower layers of spring coils of the spring, and a suction cup is fixedly connected in the groove.

[0012] Preferably, the spring is made of low carbon steel.

[0013] Preferably, the wire diameter of the spring is between 3mm and 5mm.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention provides a vacuum coating jig for optical lenses. A spring group is provided as a fastening mechanism. The elasticity of the spring is used to form a spring group suitable for lens placement racks of different shapes and thicknesses. A rubber coating is provided on the outer surface of each spring group. The rubber coating between the gaps on the outer surface of the spring is provided with a groove group to prevent the optical lens from being worn when fastened by the spring. A suction cup is bonded in the groove to ensure that the lens is double-clamped when fastened by the spring.

[0016] 2. The vacuum coating jig for optical lenses of the present invention can coat a large number of lenses while saving coating space and ensuring uniform coating by evenly arranging multiple discs on the rotating shaft of a motor.

[0017] 3. The present invention provides a vacuum coating jig for optical lenses. After the coating emission source coats the optical lens on the lower disc, the coating emission source rises to the upper disc and sprays the target material on the upper disc. A sealing ring is provided on the left side of the disc and a rubber sheet is provided on the right side to seal and separate the upper and lower discs. When the coating emission source coats the upper target material, the target material is prevented from falling on the lower optical lens and from diffusing to other disc areas. This avoids the problem of the optical lens coating being too thin and forming a secondary coating, thereby saving target material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the top view of the disc structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the spring of the present invention;

[0022] In the figure: shell 1, interlayer 2, spiral heat pipe 3, vacuum coating chamber 4, rodless cylinder 5, coated emission source 6, motor 7, disc 8, fastening mechanism 9, slider 10, bearing 11, ring 12, concave groove 13, sealing ring 14, rubber sheet 15, opening 16, spring 91, rubber coating 17, groove 18, suction cup 19. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] The present invention provides a vacuum coating jig for optical lenses, comprising a shell 1, an interlayer 2, a spiral heat-conducting pipe 3, a vacuum coating chamber 4, a rodless cylinder 5, a coating emission source 6, a motor 7, a disc 8 and a fastening mechanism 9; the side wall of the shell 1 is provided with an interlayer 2, a plurality of spiral heat-conducting pipes 3 evenly placed in the vertical direction are provided inside the interlayer 2, a vacuum coating chamber 4 is provided inside the shell 1, a rodless cylinder 5, a coating emission source 6, a disc 8 and a fastening mechanism 9 are provided inside the vacuum coating chamber 4, and a fixed film is provided on the right side of the vacuum coating chamber 4. A rodless cylinder 5 is connected, a slider 10 is slidably connected to the rodless cylinder 5, a coating emission source 6 is fixedly connected to the left side of the slider 10, a motor 7 is fixedly connected to the outer surface of the bottom end of the shell 1, the rotating shaft of the motor 7 passes through the shell 1 and extends into the vacuum coating chamber 4, a bearing 11 is fixedly connected to the rotating shaft of the motor 7, the outer surface of the bearing is fixedly connected to the inner surface of the bottom end of the shell 1, a plurality of discs 8 are evenly fixed on the rotating shaft of the motor 7 along the axial direction, and a fastening mechanism 9 is fixedly connected to the upper surface of the plurality of discs 8;

[0025] The fastening mechanism 9 includes at least three springs 91 , and the lower surfaces of the three springs 91 are fixedly connected to the upper surface of the disc 8 .

[0026] By adopting the above technical solution, an interlayer 2 is provided on the side wall of the shell 1, and a spiral heat pipe 3 is provided in the interlayer 2, so that the target material is heated and evaporated; a rodless cylinder 5 is provided in the vacuum coating chamber 4, so that the coating emission source 6 is driven by the rodless cylinder 5 to reciprocate up and down, so that the optical lenses at different levels are evenly coated; a plurality of disks 8 are fixedly connected to the rotating shaft of the motor 7, so that the rotating shaft of the motor 7 drives the disk 8 to rotate, and under the rotation of the disk 8, the optical lens is evenly coated, so that the optical lens on the disk 8 is evenly coated, and target material can be saved. By providing a plurality of disks 8, the effect of coating a large number of lenses can be achieved, and the coating space can also be saved; a fastening mechanism 9 is fixedly connected to the disk 8, and the fastening mechanism 9 includes at least three springs 91, which are used The elasticity of spring 91 enables the three springs 91 to form a lens placement rack suitable for different shapes and thicknesses, which is suitable for fastening lenses of different specifications. In addition, when motor 7 is started, the rotating shaft of motor 7 drives disk 8 to rotate. The rotation of disk 8 causes spring 91 on disk 8 to shake. The shaking of spring 91 causes the lens to shake along with spring 91. The spring 91 and the lens are relatively stationary. The lens fixed on the spring 91 is displaced left and right, and can contact the target material at different positions floating in the vacuum coating chamber 6, thereby increasing the contact area between the lens and the target material, and making the lens coating uniform. This not only solves the problem that traditional placement racks are difficult to adapt to lenses of different shapes and thicknesses through adjustment, but also achieves the effect of uniform coating, improves the efficiency of large-scale lens coating, and thus improves the actual performance of the vacuum coating machine.

[0027] As a specific embodiment of the present invention, a plurality of circular rings 12 evenly placed in the vertical direction are fixedly connected to the left side of the vacuum coating chamber 4, and a concave groove 13 is passed through the right side of the plurality of circular rings 12. A sealing ring 14 is fixedly connected to the inner wall of the plurality of circular rings 12, and a concave groove 13 is passed through the right side of the sealing ring 14. The sealing ring 14 is rotatably connected to the disc 8, and a concave groove 13 is passed through the disc 8 near the right side. A rubber sheet 15 is fixedly connected to the outer surface of the concave groove 13 on the disc 8, and the right side of the rubber sheet 15 contacts the right inner wall of the sealing ring 14. An opening 16 is provided on the rubber sheet 15, and the width of the concave groove 13 is greater than the width of the coating emission source 6, and the width of the concave groove 13 is greater than the width of the slider 10.

[0028] By adopting the above technical solution, a sealing ring 14 is set to be rotatably connected with the disc 8, so that the disc 8 can be sealed while rotating normally, thereby preventing the upper target material from diffusing to other layers and affecting the coating effect of the optical lens; by providing a concave through-groove 13, the width of the concave through-groove 13 is greater than the width of the coating emission source 6, and the width of the concave through-groove 13 is greater than the width of the slider 10, and the rise of the rodless cylinder 5, the rotation of the disc 8 and the spraying of the coating emission source 6 are controlled by numerical control. When the numerical control controls the rodless cylinder 5 to drive the coating emission source 6 to rise to the bottom disc 8, and rises to a height higher than the spring 91 on the bottom disc 8 and lower than the height of the middle disc 8, the numerical control controls the rodless cylinder 5 to stop rising, and controls the motor 7 to drive the disc 8 to rotate, and then the numerical control controls the coating emission source 6 to start spraying. When the coating emission source 6 has sprayed the required target material on the bottom disc, the numerical control controls the coating emission source 6 to stop spraying, and then controls the disc After rotating to the initial position, it stops rotating. The initial position is the relative vertical position of the concave groove 13, the coated emission source 6 and the slider 10. At this time, the CNC controls the rodless cylinder 5 to rise above the middle disk 8 through the rubber sheet 15 and the concave groove 13, and rises to a height higher than the spring 91 on the middle disk 8 and lower than the height of the upper disk 8, and then repeats the above action; an opening 16 is provided on the rubber sheet 15, which not only ensures that the coated emission source 6 can reciprocate up and down normally and coat the optical lenses of different layers evenly, but also can use the rubber sheet 15 as a memory material. When the coated emission source 6 reaches the upper disk 8 through the opening 16 on the rubber sheet 15, the opening 16 is closed, so that when the coated emission source 6 coats the optical lens on the upper disk 8, the target material will not fall on the lower optical lens, avoiding repeated coating, and also avoiding the upper target material from diffusing to other layers, reducing the coating thickness, affecting the coating effect, and wasting target material.

[0029] As a specific embodiment of the present invention, the three springs 91 are evenly arranged on the same circumference, the diameter of the circumference is smaller than the diameter of the lens to be coated, and the gap between the upper and lower layers of the spring coils of the spring 91 is smaller than the thickness of the lens to be coated.

[0030] By adopting the above technical solution, the fastening mechanism 9 is provided to include at least three springs 91, and the three springs 91 are evenly arranged on the same circumference. When the lens is stuck in the gap between the upper and lower layers of the spring coils of the three springs 91, the contact points of the lens and the three springs 91 form an equilateral triangle structure, so that the lens can be better stabilized while being clamped, and the lens can be prevented from falling off when the disk 8 rotates. By setting the circumferential diameter of the three springs to be smaller than the diameter of the lens to be coated, the gap between the upper and lower layers of the spring coils of the spring 91 is smaller than the thickness of the lens to be coated, so that when the optical lens is placed on the placement rack formed by the spring 91, a better clamping effect is obtained, and the optical lens can be prevented from falling off when the disk 8 rotates.

[0031] As a specific embodiment of the present invention, the outer surface of the spring 91 is provided with a rubber coating 17 , and a groove 18 is provided on the rubber coating 17 between the upper and lower layers of spring coils of the spring 91 , and a suction cup 19 is fixedly connected in the groove 18 .

[0032] By adopting the above technical solution, a plurality of grooves 18 are provided on the rubber coating 17 between the upper and lower layers of spring coils of the spring 91, and a suction cup 19 is fixedly connected in the groove 18. When the optical lens is placed in the rubber coating 17 between the spring coils of the spring 91, the elasticity of the rubber and the suction force of the suction cup 19 are utilized to make the optical lens stuck in the groove 18 and the suction cup 19, thereby achieving a better fastening effect, preventing the spring 91 from shaking when the disc 8 rotates, causing the lens to fall off, and better ensuring that the lens and the spring 91 are in a relatively static position.

[0033] As a specific embodiment of the present invention, the spring 91 is made of low-carbon steel.

[0034] By adopting the above technical solution, when vacuum coating is performed on optical lenses, the temperature of the vacuum coating chamber is usually above 300°C, and high carbon steel has poor thermal hardness. When the ambient temperature of the high carbon steel is greater than 200°C, its hardness and wear resistance drop sharply, its hardenability is low, and it is easy to crack. Therefore, low carbon steel is selected because it has low strength and soft characteristics, good plasticity and toughness, to avoid the spring 91 from breaking due to high temperature or the lens from being worn due to excessive strength.

[0035] As a specific embodiment of the present invention, the wire diameter of the spring 91 is between 3 mm and 5 mm.

[0036] By adopting the above technical solution, when the spring 91 clamps the optical lens, it can avoid damaging the mirror surface due to the cross-sectional diameter of the spring 91 being too large, and can also avoid causing the lens to fall off due to the cross-sectional diameter of the spring 91 being too small.

[0037] Working principle: When placing an optical lens, push a group of springs 91 toward the periphery, and clamp the optical lens in the rubber groove between the gaps of each spring 91. The elasticity of the spring 91 is used to form a lens placement rack suitable for different shapes and thicknesses, which is suitable for fastening lenses of different specifications. After placing the optical lens, start the motor 7. The motor 7 rotating shaft drives the disc 8 to rotate. The rotation of the disc 8 causes the spring 91 to shake to a certain extent, so that the lenses are relatively staggered. The lens and the spring 91 are relatively still to ensure the coating area. Start the rodless cylinder 5 and the coating emission source 6. The rodless cylinder 5 drives the slider 10 to move up slowly, so that the coating emission source 6 moves up slowly, and the spiral is started at the same time. The heat pipe 3 heats and evaporates the target material to coat the optical lens. At the same time, the rising speed of the rodless cylinder 5 is controlled by numerical control. It is also necessary to control the coating emission source 6 to rise to a height higher than each layer of spring 91, and then emit the target material required for each layer of optical lens, and then stop emitting. After rising to the upper disk 8 and higher than the height of the spring 91 on the upper disk 8, the target material is emitted again to achieve the effect of uniform coating of the optical lens on the disk 8, and ensure that the rodless cylinder 5 passes through the concave groove 13 of the disk 8. After the coating emission source 6 passes through the concave groove 13 and the rubber sheet 15, the opening 16 is closed, and the coating emission source 6 reaches the upper disk 8 to avoid target material leakage on the lower disk 8 and cause repeated coating.

[0038] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum coating jig for optical lenses, characterized by: The invention comprises a shell (1), an interlayer (2), a spiral heat-conducting pipe (3), a vacuum coating cavity (4), a rodless cylinder (5), a film-coated emission source (6), a motor (7), a disc (8) and a fastening mechanism (9); the side wall of the shell (1) is provided with an interlayer (2), a plurality of spiral heat-conducting pipes (3) evenly arranged in a vertical direction are provided inside the interlayer (2), a vacuum coating cavity (4) is provided inside the shell (1), a rodless cylinder (5), a film-coated emission source (6), a disc (8) and a fastening mechanism (9) are provided inside the vacuum coating cavity (4), and a rodless cylinder (5), a film-coated emission source (6), a disc (8) and a fastening mechanism (9) are fixedly connected on the right side of the vacuum coating cavity (4). Cylinder (5), a slider (10) is slidably connected to the rodless cylinder (5), a coating emission source (6) is fixedly connected to the left side of the slider (10), a motor (7) is fixedly connected to the outer surface of the bottom end of the shell (1), a rotating shaft of the motor (7) passes through the shell (1) and extends into the vacuum coating chamber (4), a bearing (11) is fixedly connected to the rotating shaft of the motor (7), the outer surface of the bearing is fixedly connected to the inner surface of the bottom end of the shell (1), a plurality of disks (8) are evenly fixed along the axial direction on the rotating shaft of the motor (7), and a fastening mechanism (9) is fixedly connected to the upper surface of the plurality of disks (8); The fastening mechanism (9) comprises at least three springs (91), and the lower surfaces of the springs (91) are fixedly connected to the upper surface of the disc (8); The left side of the vacuum coating chamber (4) is fixedly connected with a plurality of circular rings (12) evenly placed in the vertical direction, and the right sides of the plurality of circular rings (12) are penetrated with concave grooves (13), and the inner walls of the plurality of circular rings (12) are fixedly connected with sealing rings (14), and the right side of the sealing ring (14) is penetrated with a concave groove (13), and the sealing ring (14) is rotatably connected with the disc (8), and the disc (8) is penetrated with a concave groove (13) near the right side, and the outer surface of the concave groove (13) on the disc (8) is fixedly connected with a rubber sheet (15), and the right side of the rubber sheet (15) contacts the right inner wall of the sealing ring (14), and the rubber sheet (15) is provided with an opening (16), and the width of the concave groove (13) is greater than the width of the coating emission source (6), and the width of the concave groove (13) is greater than the width of the slider (10); The three springs (91) are evenly arranged on the same circumference, the diameter of the circumference is smaller than the diameter of the lens to be coated, and the gap between the upper and lower layers of the spring coils of the spring (91) is smaller than the thickness of the lens to be coated; The outer surface of the spring (91) is provided with a rubber coating (17), and a groove (18) is provided on the rubber coating (17) between the upper and lower layers of spring coils of the spring (91), and a suction cup (19) is fixedly connected in the groove (18); The spring (91) is made of low carbon steel; The wire diameter of the spring (91) is between 3mm and 5mm; The lens is placed in the rubber coating (17) between the spring coils and is stuck in the gap between the upper and lower layers of the spring coils of the three springs (91). The contact points of the lens and the three springs form an equilateral triangle structure.

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