Device for measuring shape and size of spectacle lens through three-dimensional contact scanning and measuring method
Through a three-dimensional contact scanning device, the three-dimensional data of the glasses are obtained using detection rods and laser technology, which solves the problems of insufficient accuracy and limited applicability in the existing technology, and achieves efficient and accurate measurement of the shape and size of the glasses.
Patent Information
- Application Number
- CN202510011604.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-04
- Publication Date
- 2025-04-18
AI Technical Summary
The existing spectacle lens measurement methods have problems such as insufficient accuracy, low working efficiency and limited applicability, especially when facing transparent or reflective materials, which are prone to errors.
A three-dimensional contact scanning device is adopted, which includes a workbench, a detection rod, a driving mechanism and a detection device. The detection rod rotates around the edge of the lens under the drive mechanism, and uses a laser emitter and dot matrix plate to obtain three-dimensional data. After the computer processing, the size, shape and detection results of the lens are displayed.
It improves the efficiency and accuracy of scanning the shape and size of the glasses, is suitable for glasses of various materials, and reduces the influence of human factors and avoids the occurrence of scanning errors.
Smart Images
Figure CN119845146A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of eyeglass lens processing equipment, and in particular to a device and a method for measuring the shape and size of eyeglass lenses by three-dimensional contact scanning. Background Art
[0002] In the field of optical manufacturing, especially in the processing and testing of eyeglass lenses, it is crucial to accurately measure the shape and size of eyeglass lenses. With the growth of market demand and the advancement of technology, various high-precision measuring equipment has emerged, greatly improving production efficiency and product quality. These devices are not only used in the eyewear manufacturing industry, but also play an important role in medical treatment, scientific research and other fields, promoting the rapid development of related industries.
[0003] At present, in order to meet the demand for accurate measurement of the shape and size of eyeglass lenses, the industry generally adopts the following methods: First, non-contact laser scanning technology, which emits a laser beam and calculates the three-dimensional information of the object surface based on the reflected light; second, manual caliper measurement method, in which the operator uses a precision caliper to directly measure the key dimensions of the eyeglass lens; third, two-dimensional projector measurement method, which projects the eyeglass lens onto the screen and then extracts the contour information through image processing technology. These three methods have their own characteristics and are widely used in eyeglass lens measurement in different scenarios.
[0004] However, these existing measurement methods have some shortcomings. For example, although non-contact laser scanning can provide high accuracy, it is easy to produce errors when facing transparent or reflective lenses; manual caliper measurement relies on manual operation, which is time-consuming and easily affected by human factors; two-dimensional projector measurement is difficult to obtain complete three-dimensional information of complex surfaces. This leads to low work efficiency and insufficient accuracy. Therefore, it is particularly important to develop an efficient, accurate and suitable three-dimensional contact scanning device for lenses of various materials. Summary of the invention
[0005] In order to improve the efficiency and accuracy of scanning the shape and size of eyeglass lenses, the present application provides a device and a method for measuring the shape and size of eyeglass lenses by three-dimensional contact scanning.
[0006] The present application provides a three-dimensional contact scanning device for measuring the shape and size of eyeglass lenses and a method for measuring the shape and size of eyeglass lenses using the following technical solutions: A device for three-dimensional contact scanning of the shape and size of eyeglass lenses comprises a workbench, on which a placing table for placing lenses is installed, on which a fixing assembly for fixing the lenses is arranged, on which a detection rod and a driving mechanism for driving the detection rod to move around and abut against the lenses are also arranged; on the workbench a detection device for detecting whether the detection rod is vertical and whether it contacts the lenses is arranged, on which a laser transmitter is fixedly arranged on the end surface of the detection rod, on which a dot matrix plate for receiving laser signals is fixedly arranged, on which a computer for receiving and processing data on the dot matrix plate and data in the detection device is installed, and on which a display screen and an operation panel are provided.
[0007] By adopting the above technical solution, after the staff places the lens to be tested on the placement table, they turn on the power on the workbench and drive the fixing component to fix the lens through the operation panel. Subsequently, the detection rod abuts against the edge of the lens and rotates around the edge of the lens under the drive of the driving mechanism. At the same time, the detection device is also started to monitor whether the detection rod is vertical and whether the detection rod is in contact with the edge of the lens at all times, and transmit the data to the computer, so as to avoid scanning errors caused by the occurrence of situations such as the detection rod being tilted and not abutting against the lens; when the detection rod moves, it drives the laser generator on it to move, and the laser generator transmits a signal to the dot matrix plate. The dot matrix plate transmits the trajectory data left by the laser transmitter to the computer, and after being processed by the computer, the size and shape of the lens and the detection results of the detection device are displayed on the display screen, so that the staff can obtain the required data intuitively and conveniently, thereby improving the efficiency and accuracy of scanning the shape and size of the lens.
[0008] Preferably, the fixing assembly includes a fixing plate, silicone and an electric push rod for driving the fixing plate to move, the electric push rod is fixedly installed on the workbench, the fixing plate is fixedly connected to the piston rod of the electric push rod, the silicone is fixedly connected to the fixing plate and the opposite side walls of the placement table, respectively, the lens is placed on the silicone on the placement table, and the silicone on the fixing plate abuts against the lens.
[0009] By adopting the above technical solution, after the staff places the lens on the placement table, the staff starts the power supply, and the electric push rod drives the fixing plate to move slowly downward close to the lens until the silicone abuts against the lens and fixes the lens. When the staff operates the electric push rod to start, different abutting forces can be selected according to the material of the lens to avoid damaging the lens; at the same time, the silicone arranged on the fixing plate and the placement table is a soft and elastic material, which can fit closely to the curvature of the lens, while providing sufficient supporting force to prevent the lens from loosening or shifting.
[0010] Preferably, the driving mechanism includes a worm wheel, a worm and a first motor, the worm wheel rotates on the workbench, the first motor is fixedly installed on the workbench, the worm is fixedly connected to the rotating shaft of the first motor, and the worm is meshed with the worm wheel; a connecting rod is fixedly connected to the end of the placement table away from the lens, the connecting rod is passed through the center of the worm wheel and fixedly connected to the workbench, a placement block is slidably provided on the worm wheel, the detection rod slides on the placement block, and the driving mechanism also includes a pushing component that drives the detection rod to abut against the lens.
[0011] By adopting the above technical solution, when the lens is fixed, the first motor is started, the first motor drives the worm to rotate, the worm drives the worm wheel to rotate, the rotation of the worm wheel drives the placement block to rotate around the detection rod, and at the same time, the detection rod is always in contact with the side wall of the lens under the action of the pushing assembly, thereby completing the scanning of the shape and size of the lens.
[0012] Preferably, a sliding groove is provided on the placement block, the detection rod slides in the sliding groove, the pushing assembly includes a push plate and a plurality of springs, the push plate is fixedly connected to a side wall of the detection rod away from the lens, and both ends of the plurality of springs are fixedly connected to the inner wall of the sliding groove and the side wall of the push plate; a groove is provided on the side of the placement block close to the connecting rod, the detection rod is inserted into the groove, the lens extends into the groove and abuts against the detection rod; a limiting assembly is provided on the worm gear to limit the detection rod from being away from the lens.
[0013] By adopting the above technical solution, before the staff places the lens, the detection rod is moved away from the lens position under the action of the limiting assembly. After the lens is fixed, the limiting assembly releases the restriction of the detection rod, and the detection rod in the slide groove maintains a tendency to move toward the lens under the push of the elastic force of the spring, so that the placement block always keeps in contact with the lens when it rotates around the lens.
[0014] Preferably, the limiting assembly includes a screw rod and a second motor, a limiting groove is opened on the worm wheel, the placement block is slidably connected to the inner wall of the limiting groove, the screw rod rotates in the limiting groove, the second motor is fixedly installed on the inner wall of the limiting groove, one end of the screw rod is fixedly connected to the rotating shaft of the second motor, and the other end is fixed and rotated on the inner wall of the limiting groove, the placement block is threadedly connected to the screw rod, and the computer controls the switch of the second motor.
[0015] By adopting the above technical solution, during the initialization before the workbench is started, the placement block is at the end away from the connecting rod, so when the staff places the lens, the detection rod is away from the lens. When the lens is fixed, the computer starts the second motor, and the second motor starts to drive the placement block to move slowly toward the connecting rod until the lens extends into the groove and abuts against the detection rod, and the second motor stops rotating.
[0016] Preferably, the inner wall relative to the slide groove is provided with a limiting groove, and the opposite side walls of the push plate are fixedly connected with a limiting block, and the limiting block is slidably connected to the inner wall of the limiting groove.
[0017] By adopting the above technical solution, when the detection rod moves in the slide groove, the limit block slides in the limit groove synchronously, and the limit block slides against the inner wall of the limit groove, thereby avoiding the possibility of the detection rod tilting.
[0018] Preferably, the detection device includes a pressure sensor and a laser level, the pressure sensor is fixedly mounted on the inner wall of the slide groove, and the detection rod abuts against the pressure sensor; the laser level is fixedly mounted on the side wall of the detection rod.
[0019] By adopting the above technical solution, when the workbench starts working, the pressure sensor and the laser level are started synchronously. When the detection rod is in contact with the lens, the detection rod abuts against the inner wall of the end of the slide groove and the pressure sensor on the inner wall under the elastic force of the spring. When the detection rod abuts against the lens, the detection rod is pushed away from the end of the slide groove by the fixed lens, so that the pressure sensor is not in contact with the detection rod, and the pressure on the pressure sensor is zero. At this time, the lens is in contact with the detection rod; the laser level can always monitor whether the detection rod is in a vertical state. At the same time, the pressure sensor and the laser level transmit data to the computer in real time for analysis and processing. If an abnormal situation occurs, the computer will prompt.
[0020] Preferably, the outer peripheral side wall material of the detection rod is ceramic.
[0021] By adopting the above technical solution, the surface of the ceramic material is smooth, and the contact with the lens can avoid wear on the lens. At the same time, the ceramic is not easy to deform, which can improve the scanning accuracy.
[0022] Preferably, S1, after the staff places the lens to be tested on the placement table, the power on the workbench is turned on to start the testing device; S2. After the power is turned on, the staff selects the thrust of the electric push rod on the operation panel according to the material of the lens. The electric push rod moves so that the silicone on the fixing plate abuts against the upper end surface of the lens and fixes the lens; S3, then, the second motor is started, and the second motor drives the placement platform to move in the limiting groove toward the connecting pipe until the lens extends into the groove and abuts against the detection rod and moves away from the end of the slide groove; S4, the second motor stops, the first motor starts to drive the worm gear to rotate slowly, and at the same time, the laser emitter and the dot matrix plate are started, and after the detection rod abuts against and circles the lens for one circle, the laser generator leaves a track on the dot matrix plate; S5. After computer data processing, the staff can see the shape, size and other data of the lens on the display screen; S6. After the data is received, the second motor drives the detection rod to move away from the lens to the initial position and the fixing assembly releases the fixation of the lens. The staff can remove the lens and turn off the power.
[0023] By adopting the above technical solution, the driving mechanism makes the detection rod abut against the lens for a three-dimensional contact scan, and the data obtained is processed by a computer to display or print out the shape and size of the detected lens, thereby improving the efficiency and accuracy of scanning the shape and size of the lens.
[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the staff puts the lens to be tested on the placement table, they turn on the power on the workbench and drive the fixing assembly to fix the lens through the operation panel. Then, the detection rod abuts against the edge of the lens and rotates around the edge of the lens under the drive of the driving mechanism. At the same time, the detection device is also started to monitor whether the detection rod is vertical and whether the detection rod is in contact with the edge of the lens at all times, and transmit the data to the computer, so as to avoid scanning errors caused by the occurrence of situations such as the detection rod being tilted and not abutting against the lens; when the detection rod moves, it drives the laser generator on it to move, and the laser generator transmits a signal to the dot matrix plate. The dot matrix plate transmits the trajectory data left by the laser transmitter to the computer. After being processed by the computer, the size and shape of the lens and the detection results of the detection device are displayed on the display screen, so that the staff can obtain the required data intuitively and conveniently, thereby improving the efficiency and accuracy of scanning the shape and size of the eyeglass lenses; 2. After the staff puts the lens on the placement table, the staff starts the power supply, and the electric push rod drives the fixing plate to move slowly downward close to the lens until the silicone contacts the lens and fixes the lens. When the staff operates the electric push rod to start, they can choose different pressing forces according to the material of the lens to avoid damaging the lens; at the same time, the silicone set on the fixing plate and the placement table is a soft and elastic material that can fit the curvature of the lens tightly and provide sufficient support to prevent the lens from loosening or shifting; 3. Before the staff places the lens, the detection rod is moved away from the lens position under the action of the limiting assembly. After the lens is fixed, the limiting assembly releases the restriction of the detection rod, and the detection rod in the slide groove maintains a tendency to move toward the lens under the push of the elastic force of the spring, so that the placement block always keeps in contact with the lens when it rotates around the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 The present invention is a schematic diagram of the overall structure of a device for three-dimensional contact scanning of the shape and size of eyeglass lenses.
[0026] Figure 2 It is a schematic diagram of the top structure of the workbench in the embodiment of the present application.
[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle.
[0028] Description of reference numerals: 1. Workbench; 2. Placement table; 3. Fixing assembly; 4. Detection rod; 5. Driving mechanism; 6. Detection device; 7. Laser transmitter; 8. Dot matrix plate; 9. Computer; 10. Display screen; 11. Operation panel; 12. Fixing plate; 13. Silica gel; 14. Electric push rod; 15. Worm gear; 16. Worm; 17. First motor; 18. Connecting rod; 19. Placement block; 20. Pushing assembly; 21. Slide; 22. Push plate; 23. Spring; 24. Groove; 25. Limiting assembly; 26. Screw; 27. Second motor; 28. Limiting groove; 29. Limiting groove; 30. Limiting block; 31. Pressure sensor; 32. Laser level; 33. Lens. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-3 This application is described in further detail.
[0030] The present application embodiment discloses a device for three-dimensional contact scanning of the shape and size of eyeglass lenses 33, such as Figure 1As shown, it includes a workbench 1, on which a placing table 2 for placing a lens 33 is fixedly installed, a detection rod 4 and a driving mechanism 5 for driving the detection rod 4 to move around and abut against the lens 33 are also provided on the workbench 1, a detection device 6 for detecting whether the detection rod 4 is vertical and whether it contacts the lens 33 is provided on the workbench 1, a laser transmitter 7 is fixedly provided on the end surface of the detection rod 4, a dot matrix plate 8 for receiving laser signals is installed on the inner top wall of the workbench 1, and a computer 9 for receiving and processing data on the dot matrix plate 8 and data in the detection device 6 is installed on the workbench 1, and the computer 9 contains a display screen 10 and an operation panel 11. The outer peripheral side wall material of the detection rod 4 is ceramic, and the surface of the ceramic material is smooth, which can avoid the wear of the lens 33 when it abuts against the lens 33. At the same time, the ceramic is not easy to deform, which can improve the scanning accuracy.
[0031] like Figure 1 As shown, a connecting rod 18 is fixedly welded to the lower end surface of the placement table 2. The connecting rod 18 is cylindrical and its axis is arranged along the vertical direction. The bottom end of the connecting rod 18 is fixedly welded to the workbench 1. The upper end surface of the placement table 2 is fixedly adhered with silicone 13, and the lens 33 is placed on the upper end surface of the silicone 13. The workbench 1 is provided with a fixing assembly 3 for fixing the lens 33. The fixing assembly 3 includes a fixing plate 12, a silicone 13, and an electric push rod 14 for driving the fixing plate 12 to move. The electric push rod 14 is fixedly installed on the inner top wall of the workbench 1, and its piston rod passes through the inner top wall of the workbench 1. The upper end surface of the fixing plate 12 is fixedly welded on the piston rod of the electric push rod 14, and the silicone 13 is fixedly adhered to the lower end surface of the fixing plate 12. After the lens 33 is placed on the placement table 2, the fixing plate 12 moves toward the lens 33 under the push of the electric push rod 14 and makes the silicone 13 on it abut against and fix the lens 33. The silicone 13 is a soft and elastic material that can fit the curvature of the lens 33 tightly and provide sufficient support to prevent the lens 33 from loosening or shifting. The staff can select the pressure generated by the electric push rod 14 on the lens 33 according to the material of the lens 33 to be tested through the buttons on the operation panel 11, so as to avoid damage to the lens 33 caused by excessive force.
[0032] like Figure 2As shown, the driving mechanism 5 includes a worm wheel 15, a worm 16 and a first motor 17. The worm wheel 15 rotates on the workbench 1, the first motor 17 is fixedly mounted on the workbench 1, the worm 16 is fixedly welded to the rotating shaft of the first motor 17, and the worm 16 meshes with the worm wheel 15. The connecting rod 18 passes through the axis of the worm wheel 15 and is fixedly welded to the workbench 1. A placement block 19 is slidably provided on the worm wheel 15, and the detection rod 4 slides on the placement table 2. A limiting component 25 for limiting the detection rod 4 away from the lens 33 is provided on the worm gear 15. The limiting component 25 includes a screw rod 26 and a second motor 27. A limiting groove 28 is opened on the upper end surface of the worm gear 15. The placement block 19 is slidably connected to the inner wall of the limiting groove 28 in the horizontal direction. The axis of the screw rod 26 is set in the horizontal direction and rotates in the limiting groove 28. The second motor 27 is fixedly installed on the inner wall of the right end of the limiting groove 28. The right end of the screw rod 26 is fixedly welded to the rotating shaft of the second motor 27, and the left end is fixedly rotated on the inner wall of the limiting groove 28. The placement block 19 is threadedly connected to the screw rod 26, and the computer 9 controls the switch of the second motor 27.
[0033] like Figure 2 and Figure 3 As shown, the driving mechanism 5 also includes a pushing assembly 20 that drives the detection and abuts against the lens 33. The upper end surface of the placement block 19 is provided with a slide groove 21 in the vertical direction. The detection rod 4 slides in the slide groove 21 in the horizontal direction. The pushing assembly 20 includes a push plate 22 and a plurality of springs 23. The push plate 22 is rectangular and fixedly welded to the peripheral side wall of the detection rod 4 away from the lens 33. The spring 23 is arranged in the horizontal direction and its two ends are respectively fixedly welded to the inner wall of the slide groove 21 and the side wall of the push plate 22. A groove 24 is provided on the side of the placement block 19 close to the placement table 2. The lens 33 extends into the groove 24 and abuts against the detection rod 4. Limiting grooves 29 are provided on the relative inner walls at the upper and lower ends of the slide groove 21, and limiting blocks 30 are fixedly welded on the opposite side walls at the upper and lower ends of the detection rod 4. The limiting blocks 30 are rectangular in shape and are slidably connected to the inner walls of the limiting grooves 29 in the horizontal direction. The abutment between the limiting blocks 30 and the inner walls of the limiting grooves 29 can avoid the possibility of the detection rod 4 tilting.
[0034] like Figure 2 and Figure 3 As shown, the detection device 6 includes a pressure sensor 31 and a laser level 32. The pressure sensor 31 is fixedly mounted on the inner wall of the slide slot 21 close to the placement block 19. The laser level 32 is fixedly mounted on the side wall of the detection rod 4 and is slidably connected to the inner wall of the groove 24.
[0035] like Figure 1 and Figure 2 As shown, combined with Figure 3As shown, before the workbench 1 is powered on, the initial position of the placement block 19 is at the end of the limiting groove 28 away from the placement table 2. Subsequently, the staff places the lens 33 to be tested on the placement table 2, the workbench 1 is powered on, and the button of the driving electric push rod 14 corresponding to the material of the lens 33 is selected from the operation panel 11, and the driving electric push rod 14 drives the fixing plate 12 to fix the lens 33. At the same time, the detection device 6 is also started, and the pressure sensor 31 and the laser level 32 are turned on. At this time, the detection plate abuts against the pressure sensor 31 under the push of the spring 23. Subsequently, the computer 9 starts the second motor 27, and the second motor 27 drives the placement block 19 to slowly move toward the placement table 2 until the lens 33 slowly extends into the groove 24 and abuts against the detection rod 4, and pushes the detection plate away from the pressure sensor 31, and the second motor 27 stops. At this time, the pressure sensor 31 is not subjected to pressure, so it can detect whether the detection rod 4 and the lens 33 are in contact. At the same time, the laser level 32 constantly monitors whether the detection rod 4 is vertical. The pressure sensor 31 and the laser level 32 transmit data to the computer 9 in real time for analysis and processing. If an abnormal situation occurs, the computer 9 will give a prompt to avoid scanning errors caused by the detection rod 4 being tilted or not abutting against the lens 33.
[0036] like Figure 2 and Figure 3 As shown, after the contact between the detection rod 4 and the lens 33 is completed, the computer 9 starts the first motor 17, the laser emitter and the dot matrix plate 8, the first motor 17 drives the worm 16 to rotate, the worm 16 drives the worm wheel 15 to rotate slowly, and the rotation of the worm wheel 15 drives the placement block 19 to rotate around the connecting rod 18, so that the detection rod 4 rotates around the lens 33, and the detection rod 4 in the slide groove 21 maintains a tendency to move toward the direction close to the lens 33 under the elastic force of the spring 23, so that the detection rod 4 always rotates around and abuts against the side wall of the lens 33, and then the laser emitter 7 on the top of the detection rod 4 synchronously leaves a trajectory of the movement of the detection rod 4 on the dot matrix plate 8, and transmits the data to the computer 9 for processing. After being processed by the computer 9, the size and shape of the lens 33 and the detection result of the detection device 6 are displayed on the display screen 10, so that the staff can obtain the required data intuitively and conveniently, thereby improving the efficiency and accuracy of scanning the shape and size of the lens 33.
[0037] like Figure 1 As shown, the measuring method of the device for measuring the shape and size of the eyeglass lens 33 by three-dimensional contact scanning in this embodiment is as follows: S1, after the staff places the lens 33 to be tested on the placement table 2, the power on the workbench 1 is turned on, and the detection device 6 is started; S2, after the power is turned on, the staff selects the thrust of the electric push rod 14 after it is turned on on the operation panel 11 according to the material of the lens 33, and the electric push rod 14 moves so that the silicone 13 on the fixing plate 12 abuts against the upper end surface of the lens 33 and fixes the lens 33; S3, then, the second motor 27 is started, and the second motor 27 drives the placement table 2 to move in the limiting groove 28 toward the connecting pipe until the lens 33 extends into the groove 24 and abuts against the detection rod 4 to move away from the end of the slide groove 21; S4, the second motor 27 stops, the first motor 17 starts to drive the worm gear 15 to rotate slowly, and at the same time, the laser emitter 7 and the dot matrix plate 8 are started, and after the detection rod 4 abuts against and surrounds the lens 33 for one circle, the laser generator leaves a track on the dot matrix plate 8; S5. After the data is processed by the computer 9, the staff can see the shape, size and other data of the lens 33 from the display screen 10; S6, after the data is received, the second motor 27 drives the detection rod 4 to move away from the lens 33 to the initial position and the fixing assembly 3 releases the fixation of the lens 33, and the staff can remove the lens 33 and turn off the power.
[0038] The implementation principle of the embodiment of the present application is as follows: after the staff places the lens 33 to be inspected on the placement table 2, the power on the workbench 1 is turned on, and the fixing component 3 is driven by the operation panel 11 to fix the lens 33. Subsequently, the detection rod 4 is driven by the driving mechanism 5 to abut against the edge of the lens 33 and rotate around the edge of the lens 33. At the same time, the detection device 6 is also started to monitor whether the detection rod 4 is vertical and whether the detection rod 4 is in contact with the edge of the lens 33, and transmit the data to the computer 9, so as to avoid scanning errors caused by the occurrence of situations such as the detection rod 4 being tilted and not abutting against the lens 33; when the detection rod 4 moves, it drives the laser generator thereon to move, and the laser generator transmits a signal to the dot matrix plate 8. The dot matrix plate 8 transmits the trajectory data left by the laser transmitter 7 to the computer 9. After being processed by the computer 9, the size and shape of the lens 33 and the detection result of the detection device 6 are displayed on the display screen 10, so that the staff can obtain the required data intuitively and conveniently, thereby improving the efficiency and accuracy of scanning the shape and size of the eyeglass lens 33.
[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A device for three-dimensional contact scanning of the shape and size of eyeglass lenses, characterized in that: The invention comprises a workbench (1), wherein a placement table (2) for placing a lens is installed on the workbench (1), a fixing assembly (3) for fixing the lens is arranged on the workbench (1), a detection rod (4) and a driving mechanism (5) for driving the detection rod (4) to move around and abut against the lens are also arranged on the workbench (1); a detection device (6) for detecting whether the detection rod (4) is vertical and whether it contacts the lens is arranged on the workbench (1), a laser transmitter (7) is fixedly arranged on the end surface of the detection rod (4), a dot matrix plate (8) for receiving laser signals is fixedly arranged on the workbench (1), and a computer (9) for receiving and processing data on the dot matrix plate (8) and data in the detection device (6) is installed on the workbench (1), and the computer (9) comprises a display screen (10) and an operation panel (11).
2. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 1, characterized in that: The fixing assembly (3) comprises a fixing plate (12), a silicone rubber (13) and an electric push rod (14) for driving the fixing plate (12) to move, wherein the electric push rod (14) is fixedly mounted on the workbench (1), the fixing plate (12) is fixedly connected to a piston rod of the electric push rod (14), the silicone rubber (13) is respectively fixedly connected to the fixing plate (12) and the opposite side walls of the placement table (2), the lens is placed on the silicone rubber (13) on the placement table (2), and the silicone rubber (13) on the fixing plate (12) abuts against the lens.
3. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 1, characterized in that: The driving mechanism (5) comprises a worm wheel (15), a worm (16) and a first motor (17); the worm wheel (15) rotates on the workbench (1); the first motor (17) is fixedly mounted on the workbench (1); the worm (16) is fixedly connected to the rotating shaft of the first motor (17); the worm (16) is meshed with the worm wheel (15); an end of the placement platform (2) away from the lens is fixedly connected to a connecting rod (18); the connecting rod (18) is passed through the center of the worm wheel (15) and is fixedly connected to the workbench (1); a placement block (19) is provided on the worm wheel (15); the detection rod (4) slides on the placement block (19); the driving mechanism (5) further comprises a pushing component (20) for driving the detection rod to abut against the lens.
4. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 3, characterized in that: The placement block (19) is provided with a slide groove (21), the detection rod (4) slides in the slide groove (21), the pushing component (20) comprises a push plate (22) and a plurality of springs (23), the push plate (22) is fixedly connected to a side wall of the detection rod (4) away from the lens, and both ends of the plurality of springs (23) are fixedly connected to the inner wall of the slide groove (21) and the side wall of the push plate (22); the placement block (19) is provided with a groove (24) on a side close to the connecting rod (18), the detection rod (4) is inserted into the groove (24), and the lens extends into the groove (24) and abuts against the detection rod (4); the worm gear (15) is provided with a limiting component (25) for limiting the detection rod (4) from being away from the lens.
5. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 4, characterized in that: The limiting assembly (25) comprises a screw rod (26) and a second motor (27); a limiting groove (28) is provided on the worm wheel (15); the placement block (19) is slidably connected to the inner wall of the limiting groove (28); the screw rod (26) rotates in the limiting groove (28); the second motor (27) is fixedly installed on the inner wall of the limiting groove (28); one end of the screw rod (26) is fixedly connected to the rotating shaft of the second motor (27); the other end is fixedly rotated on the inner wall of the limiting groove (28); the placement block (19) is threadedly connected to the screw rod (26); and the computer (9) controls the switch of the second motor (27).
6. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 4, characterized in that: The slide groove (21) is provided with a limiting groove (29) on the inner wall opposite to the slide groove (21), and the opposite side wall of the detection rod (4) is fixedly connected with a limiting block (30), and the limiting block (30) is slidably connected to the inner wall of the limiting groove (29).
7. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 4, characterized in that: The detection device (6) comprises a pressure sensor (31) and a laser level (32); the pressure sensor (31) is fixedly mounted on the inner wall of the slide groove (21); the detection rod (4) abuts against the pressure sensor (31); and the laser level (32) is fixedly mounted on the side wall of the detection rod (4).
8. The device for three-dimensional contact scanning of the shape and size of eyeglass lenses according to claim 1, characterized in that: The material of the outer peripheral side wall of the detection rod (4) is ceramic.
9. The method for measuring the shape and size of eyeglass lenses by a three-dimensional contact scanning device according to claims 1-8, characterized in that: S1. After a staff member places a lens to be tested on a placement table (2), the power supply on the workbench (1) is turned on, and the testing device (6) is started; S2, after the power is turned on, the staff selects the thrust of the electric push rod (14) on the operation panel (11) according to the material of the lens, and the electric push rod (14) moves so that the silica gel (13) on the fixing plate (12) abuts against the upper end surface of the lens and fixes the lens; S3, then, the second motor (27) is started, and the second motor (27) drives the placement platform (2) to move in the limiting groove (28) toward the connecting tube until the lens extends into the groove (24) and abuts against the detection rod (4) and moves away from the end of the slide groove (21); S4, the second motor (27) stops, the first motor (17) starts to drive the worm gear (15) to rotate slowly, and at the same time, the laser emitter (7) and the dot matrix plate (8) are started, and after the detection rod (4) abuts against and circles the lens for one circle, the laser generator leaves a track on the dot matrix plate (8); S5. After the data is processed by the computer (9), the staff can see the shape, size and other data of the lens on the display screen (10); S6. After obtaining the data, the second motor (27) drives the detection rod (4) to move away from the lens to the initial position and the fixing assembly (3) releases the fixation of the lens. The staff can remove the lens and turn off the power.