A cleaning platform and cleaning method for large-aperture optical elements with large tilting angles

Abstract

A kind of cleaning platform and cleaning method of large aperture optical element with large angle tilting, including air cylinder, four feet, electric cylinder, control console, two air knife installation crossbeam, workpiece tooling frame, limiting fixed handle, contact rod and cleaning frame;Air cylinder is driven by external air source to stretch, by contact rod to lift cleaning frame upward, so that the cleaning frame rotates with the hinge in its right lower corner as the shaft, so that the overall inclination of the cleaning frame together with workpiece tooling plate and optical element is realized, so that the corner area of rectangular optical element is at the lowermost end, control console controls electric cylinder to drive air knife installation crossbeam and air knife to move up and down, to realize the double-sided air drying of optical element.The present application is used for double-sided cleaning of optical element, improves cleaning operation efficiency, improves cleaning quality, realizes that the water stain and smudge on the surface of optical element are no residue, especially suitable for large aperture optical element with high surface finish requirement and high dehydration requirement in cleaning process.

Description

Technical Field

[0001] This invention relates to the processing technology of optical components, specifically to a cleaning platform and cleaning method for large-aperture optical components with tiltable angles, belonging to the field of optical component manufacturing technology. Background Technology

[0002] Large-aperture planar optical elements are core components in many large, high-precision optical instruments and equipment. With the rapid development of high-energy laser systems, space optical remote sensing devices, astronomical telescopes, and high-end photolithography equipment, almost stringent requirements have been placed on the surface cleanliness of large-aperture optical elements. Micron- or even nano-scale contaminants, such as dust, oil stains, water stains, and particulate matter, can cause light scattering, absorption, or thermal lensing effects, leading to a sharp decline in system performance, such as lowering the laser damage threshold, affecting image quality, or even causing permanent damage to optical elements.

[0003] For large-aperture optical components, cleaning is usually required after the preceding processes are completed. Traditional cleaning operations mostly use a double-sided cleaning method with the workpiece placed vertically. This method mainly considers the safety of the glass during the cleaning process, and pays less attention to the process requirements. During cleaning, workers usually wipe a large area near the bottom surface of the glass, and the subsequent drying is often done by leaving it to stand, relying on natural air convection.

[0004] The traditional cleaning and drying methods for large-aperture optical components have the following drawbacks: First, a cleaning mark will be left on the lower surface of the large-aperture optical component after cleaning and vertical placement. This mark is difficult to remove, which leads to a decrease in the performance of the optical component during use. Second, relying on natural air convection to dry the surface of the optical component is not only time-consuming and inefficient, but also leaves stains. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a cleaning platform and cleaning method for large-aperture optical elements with tilt angle. It can not only fix the optical elements, but also adjust the tilt angle of the large-aperture optical elements during the cleaning process to achieve no residual stains on the surface of the optical elements. Furthermore, it uses an air knife method for forced air drying, thereby quickly completing the air drying operation and achieving the purpose of improving the surface smoothness of large-aperture optical elements and improving the efficiency of air drying operation.

[0006] Based on the above objectives, the technical solution provided by the present invention is as follows: A cleaning platform for large-diameter optical components with tiltable angles, characterized in that the cleaning platform comprises: a cylinder, four support legs, an electric cylinder, a control console, two air knife mounting beams, a workpiece tooling frame, a limit fixing handle, a contact rod, and a cleaning frame. Four legs stand upright on the ground, fixedly connected to each other by rods, forming a cubic support frame that supports the entire mechanism. The cleaning frame is erected on the support frame and is used to hold the workpiece fixture plate. The lower right corner of the cleaning frame is hinged to the upper right end of the support frame, allowing the cleaning frame to rotate around the hinge. The lower left part of the cleaning frame is detachably placed on the upper left end of the support frame and is provided with an inclined positioning hole. The workpiece fixture plate is used to hold the optical components to be cleaned. Multiple limiting and fixing wrenches are connected by threaded cross... The workpiece fixture plate and its optical components are fixed to the cleaning frame by passing through both sides of the cleaning frame; the cylinder is fixed to the lower part of the support base and connected to an external air source; the contact rod is connected to the upper end of the cylinder and is fixed to the inclined positioning hole through a wedge; the cylinder extends under the drive of the external air source and lifts the cleaning frame upward through the contact rod, so that the cleaning frame rotates around its lower right hinge, thereby achieving the overall tilting of the cleaning frame together with the workpiece fixture plate and optical components; when the cylinder stops, it supports the cleaning frame to maintain the tilted posture. Two air knife mounting beams, one at the front and one at the back, are respectively installed on the front and rear sides of the cleaning frame. The air knife mounting beams are horizontally connected to the upper part of the support base and can move up and down along the support base. Several air knives connected to an external compressed air source are installed on the air knife mounting beams. The air knives move up and down with the air knife mounting beams to air dry the optical components. The electric cylinder is fixed on the support base and connected to the air knife mounting beams. The control console is fixed on the air knife mounting beams and connected to the electric cylinder. The control console controls the electric cylinder to drive the air knife mounting beams and air knives to move up and down, so as to achieve double-sided air drying of the optical components.

[0007] Furthermore, the cleaning platform also includes a water receiving tray, which is horizontally fixed to the lower part of the support frame to receive wastewater splashed down from the optical components during the cleaning process.

[0008] Furthermore, the cleaning platform also includes a workpiece limiting plate, which is fixed to the cleaning frame and used to limit the cleaning optical components.

[0009] Furthermore, the optical element, workpiece fixture plate, and cleaning frame are rectangular.

[0010] Another technical solution of the present invention is: A cleaning method for large-aperture optical components using the aforementioned cleaning platform includes the following steps: The first step is to install the air knife onto the air knife mounting beam; The second step is to fix the optical element to be cleaned inside the workpiece fixture plate, and then use the limiting and fixing wrench to install the workpiece fixture plate together with the optical element into the cleaning frame. The third step is to keep the cleaning frame vertical and spray the two sides of the optical element with deionized water for cleaning. The fourth step is to wipe both sides of the optical element from top to bottom and from left to right using medical non-woven fabric. The fifth step is to spray both sides of the optical element with deionized water; The sixth step is to spray and clean both sides of the optical element with 99.9% pure alcohol; Step 7: The cleaning frame, along with the workpiece fixture plate and optical element, is pushed to an inclined position by the cylinder and supported to maintain the inclined posture, so that one corner of the optical element is in the lowest position. Step 8: Control the two air knife mounting beams through the console to drive the air knives and air dry the two sides of the optical element from top to bottom. The ninth step is to use medical non-woven fabric to wipe away any remaining stains on the front and back sides of the lower part of the optical element until there are no water stains or dirt on the surface of the optical element, thereby completing the cleaning operation of the large-diameter optical element.

[0011] Furthermore, in the eighth step, the parameters of the air knife and its distance from the surface of the optical element are adjusted according to the cleaning requirements of optical elements with different diameters and sizes.

[0012] Compared with the prior art, the present invention achieves the following beneficial effects: 1) Compared with traditional cleaning platforms, the cleaning platform of the present invention can adjust the angle of large-diameter optical components by lifting and tilting the cleaning frame, so that the corner area of ​​the rectangular optical component is at the bottom, making the area of ​​alcohol residue that needs to be wiped and cleaned as small as possible, so as to facilitate the wiping of stains after cleaning, thereby improving the cleaning quality of the surface of large-diameter optical components. The cleaning effect achieved is better than the cleaning effect of the horizontal upright posture, and the water stains and dirt on the surface of the optical components are left without residue.

[0013] 2) This invention uses an air knife installed on a movable air knife mounting beam to force-dry the surface of the cleaned optical components on both sides, thereby greatly improving the efficiency of the drying operation. Compared with the previous traditional natural air drying method, it reduces the dehydration time of the air knife and avoids the water from the cleaning from condensing on the surface to form new stains.

[0014] 3) This invention improves the efficiency of cleaning operations and enhances the cleanliness of optical components by assisting cleaning personnel in performing double-sided cleaning of optical components. It is especially suitable for optical components that require high surface smoothness and high dehydration during the cleaning process.

[0015] 4) This invention can meet the cleaning requirements of optical components of different diameters and sizes by adjusting the distance and air knife parameters, and has the advantage of wide applicability.

[0016] In summary, this invention improves the efficiency of cleaning operations, enhances the cleaning quality of optical component surfaces, and achieves the removal of water stains and dirt residue. It has the advantage of wide applicability, and is especially suitable for large-diameter optical components that require high surface smoothness and high dehydration during the cleaning process. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention.

[0018] Figure 2 for Figure 2 Side view.

[0019] Figure 3 for Figure 2 Top view.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the present invention.

[0021] In the picture, 1—Cylinder, 2—Support leg, 3—Water tray, 4—Electric cylinder, 5—Control console, 6—Air knife mounting beam, 7—Workpiece limiting plate, 8—Workpiece tooling frame, 9—Limit fixing handle, 10—Cleaning frame, 11—Inclined positioning hole, 12—Contact rod, 13—Hinge. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this should not be construed as limiting the scope of protection of the present invention.

[0023] This invention is used to assist cleaning personnel in performing double-sided cleaning of optical components, and is especially suitable for large-diameter optical components that require high surface smoothness and high dehydration during the cleaning process.

[0024] Example Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4The cleaning platform for tiltable optical elements shown in the figure includes: cylinder 1, four support legs 2, water tray 3, electric cylinder 4, control console 5, two air knife mounting beams 6, workpiece limiting plate 7, workpiece tooling frame 8, limiting and fixing handle 9, contact rod 12, and cleaning frame 10.

[0025] The four legs 2 stand upright on the ground and are located at the four corners in a rectangular shape. They are fixedly connected to each other by rods to form a cubic load-bearing frame, which supports the entire mechanism.

[0026] The water receiving tray 3 is horizontally fixed to the lower section of the four support legs 2 by screws, and is used to collect the wastewater splashed down during the cleaning process of large-diameter optical components. The four corners of the water receiving tray 3 are fixedly connected to the four support legs 2 respectively.

[0027] The cleaning frame 10 is rectangular and upright on the supporting base frame, used to hold the workpiece fixture plate 8. Please refer to [reference needed]. Figure 1 The lower right corner of the cleaning frame 10 is hinged to the upper part of the right end of the support base frame via a hinge 13 to enable the cleaning frame 10 to rotate around the hinge. The lower left part of the cleaning frame 10 can be detachably placed on the upper part of the left end of the support base frame and is provided with an inclined positioning hole 11.

[0028] The workpiece fixture plate 8 is used to place the workpiece of the large-diameter optical element to be cleaned. The large-diameter optical element is rectangular and is mounted on the workpiece fixture plate 8. It moves up and down the cleaning platform together with the workpiece fixture plate 8. Multiple limiting and fixing wrenches 9 are threaded through both sides of the cleaning frame 10 to fix the rectangular workpiece fixture plate 8 to the cleaning frame 10. The workpiece limiting plate 7 is fixed to the cleaning frame 10 by screws and is used to limit the position of the workpiece to be cleaned.

[0029] The cylinder 1 is fixed to the lower part of the supporting base frame by screws and connected to an external air source. It is used to push the cleaning frame 10 to tilt and support. The contact rod 12 is connected to the upper end of the cylinder 1. Figure 1 Furthermore, the contact rod 12 can be connected to the inclined positioning hole 11 on the lower left of the cleaning frame 10 via a wedge. When the cleaning frame 10 needs to be tilted, the contact rod 12 is connected and fixed to the inclined positioning hole 11 via a wedge. The cylinder 1 extends under the drive of an external air source and lifts the lower left of the cleaning frame 10 upward via the contact rod 12, causing the cleaning frame 10 to rotate around its lower right hinge 13 as an axis. This achieves the overall tilting of the cleaning frame 10 together with the workpiece fixture plate 8 and the workpiece. At the same time, when the cylinder 1 stops moving, it can support the cleaning frame 10 to maintain its tilted posture.

[0030] Two air knife mounting beams 6 are respectively installed on the front and rear sides of the cleaning frame 10. The air knife mounting beams 6 are horizontally connected to the upper part of the support base and can move up and down along the support base. Several air knives for air drying of optical components are installed on the air knife mounting beams 6. The air knives can move up and down with the air knife mounting beams 6 and the air outlet is aligned with the workpiece fixture frame 8 to achieve double-sided air drying of the optical components. The air knives are connected to an external compressed air source.

[0031] The electric cylinder 4 is fixed on the support frame below the air knife mounting beam 6 and connected to the air knife mounting beam 6, and is used to drive the air knife mounting beam 6 to rise and fall.

[0032] The control console 5 is fixed to the air knife mounting beam 6 by screws and connected to the electric cylinder 4. It is used to control the operation of the electric cylinder 4 and drive the air knife mounting beam 6 to rise and fall through the electric cylinder 4.

[0033] Please see Figure 1 The cleaning method for large-aperture optical elements with tiltable angles according to the present invention includes the following steps: The first step is to install the air knife onto the air knife mounting beam 6; The second step is to fix the optical element to be cleaned in the workpiece fixture plate 8, and install the workpiece fixture plate 8 together with the optical element in the cleaning frame 10 using the limiting and fixing wrench 9. The third step is to keep the tilted frame 10 in a vertical position and spray the two sides of the optical element with deionized water for cleaning. The fourth step is to use medical non-woven fabric to wipe both sides of the optical element from top to bottom and from left to right. Fifth step, keeping the tilted frame 10 in a vertical position, spray both sides of the optical element with deionized water; Step 6: Keep the tilted frame 10 in a vertical position and spray the two sides of the optical element with 99.9% pure alcohol. The seventh step involves using the cylinder 1 to push the cleaning frame 10, along with the workpiece fixture plate 8 and the optical element, to an inclined position and support and maintain the inclined posture so that one corner of the rectangular optical element is at its lowest position. The eighth step involves controlling the two air knife mounting beams 6 via the control console 5 to drive the air knives and perform surface drying on both sides of the optical element from top to bottom. By adjusting the parameters of the air knives and their distance from the surface of the optical element, the cleaning of optical elements of different diameters and sizes can be achieved. The ninth step is to use medical non-woven cloth to wipe away the residual alcohol stains on the front and back sides of the lower part of the optical element until there are no water stains or dirt on the surface of the optical element, thereby completing the cleaning operation of the large-diameter optical element.

[0034] The above embodiments are provided to facilitate understanding of the present invention by those skilled in the art. However, the present invention is not limited to the above embodiments. Modifications made by those skilled in the art based on the disclosure of the present invention without creative effort should be within the scope of protection claimed by the present invention.

Claims

1. A cleaning platform for large-aperture optical elements with tiltable angles, characterized in that, The cleaning platform includes: a cylinder (1), four support legs (2), an electric cylinder (4), a control console (5), two air knife mounting beams (6), a workpiece fixture frame (8), a limit fixing handle (9), a contact rod (12), and a cleaning frame (10). Four legs (2) are upright and supported on the ground, and are fixedly connected to each other by rods to form a cubic support frame, which supports the entire mechanism; the cleaning frame (10) is upright on the support frame and is used to place the workpiece fixture plate (8). The lower right corner of the cleaning frame (10) is hinged to the upper right end of the support frame by a hinge (13) to realize the rotation of the cleaning frame (10) around the hinge. The lower left part of the cleaning frame (10) can be detached and rests on the upper left end of the support frame and is provided with an inclined positioning hole (11); the workpiece fixture plate (8) is used to place the optical element to be cleaned, and multiple limiting and fixing wrenches (9) are threaded through the cleaning frame (10). On both sides of the workpiece fixture plate (8) and the optical element thereon are fixed on the cleaning frame (10); the cylinder (1) is fixed at the lower part of the bearing base and connected to an external air source; the contact rod (12) is connected to the upper end of the cylinder (1) and is fixed to the inclined positioning hole (11) by a wedge; the cylinder (1) extends under the drive of the external air source and lifts the cleaning frame (10) upward through the contact rod (12), so that the cleaning frame (10) rotates with the hinge (13) at its lower right corner as the axis, thereby realizing the overall tilting of the cleaning frame (10) together with the workpiece fixture plate (8) and the optical element; when the cylinder (1) stops, it supports the cleaning frame (10) to maintain the tilted posture. Two air knife mounting beams (6) are respectively set on the front and rear sides of the cleaning frame (10). The air knife mounting beams (6) are horizontally connected to the upper part of the support base and can move up and down along the support base. Several air knives connected to an external compressed air source are installed on the air knife mounting beams (6). The air knives move up and down with the air knife mounting beams (6) to air dry the optical element. The electric cylinder (4) is fixed on the support base and connected to the air knife mounting beams (6). The control console (5) is fixed on the air knife mounting beams (6) and connected to the electric cylinder (4). The control console (5) controls the electric cylinder (4) to drive the air knife mounting beams (6) and the air knives to move up and down, so as to realize the double-sided air drying of the optical element.

2. The cleaning platform for large-aperture optical elements with tiltable angles according to claim 1, characterized in that: The cleaning platform also includes a water receiving tray (3), which is horizontally fixed to the lower part of the support frame and is used to receive the wastewater splashed down by the optical components during the cleaning process.

3. The cleaning platform for large-aperture optical elements with tiltable angles according to claim 1, characterized in that: The cleaning platform also includes a workpiece limiting plate (7), which is fixed on the cleaning frame (10) and used to limit the cleaning optical components.

4. The cleaning platform for large-aperture optical elements with tiltable angles according to claim 1, characterized in that: The optical element, workpiece fixture plate (8) and cleaning frame (10) are rectangular.

5. A method for cleaning large-aperture optical elements using the cleaning platform described in claim 1, characterized in that: The cleaning method includes the following steps: The first step is to install the air knife onto the air knife mounting beam (6); The second step is to fix the optical element to be cleaned in the workpiece fixture plate (8), and install the workpiece fixture plate (8) together with the optical element in the cleaning frame (10) by using the limiting fixing wrench (9). The third step is to keep the cleaning frame (10) in a vertical position and spray the two sides of the optical element with deionized water. The fourth step is to wipe both sides of the optical element from top to bottom and from left to right using medical non-woven fabric. The fifth step is to spray both sides of the optical element with deionized water; The sixth step is to spray and clean both sides of the optical element with 99.9% pure alcohol; Step 7: The cleaning frame (10) is pushed to an inclined position along with the workpiece fixture plate (8) and the optical element by the cylinder (1), and the inclined posture is supported and maintained so that one corner of the optical element is in the lowest position. Step 8: Control the two air knife mounting beams (6) through the control console (5) to drive the air knives and dry the two sides of the optical element from top to bottom. The ninth step is to use medical non-woven fabric to wipe away any remaining stains on the front and back sides of the lower part of the optical element until there are no water stains or dirt on the surface of the optical element, thereby completing the cleaning operation of the large-diameter optical element.

6. The cleaning method for large-aperture optical elements according to claim 5, characterized in that: In the eighth step, the parameters of the air knife and its distance from the surface of the optical element are adjusted according to the cleaning requirements of optical elements with different diameters and sizes.

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