Light transmission detection device and method for optical polished section

Abstract

The invention discloses a light transmission detection device and method for an optical polished section, and relates to the technical field of optical detection.The light transmission detection device comprises a detection chamber and a mechanical arm, the mechanical arm is arranged outside the detection chamber, a detection mechanism is arranged at the upper end of the interior of the detection chamber, and a light source is further arranged in the detection chamber; the detection mechanism is composed of a rotating assembly and a clamping assembly, a suction cup clamp is arranged at the execution end of the mechanical arm and composed of a fixed cover and a movable column, the movable column is installed in the fixed cover, a spring is arranged between the movable column and the fixed cover, and a lens suction cup is arranged at the end, away from the mechanical arm, of the movable column. Negative pressure for adsorbing the optical polishing piece is generated through a mechanical structure, the cost of the air pump is saved, falling of the optical polishing piece caused by sudden shutdown of the air pump is also avoided, and the reliability of the system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical detection, and in particular to a light transmission detection device and method for optical polishing sheets. Background Art

[0002] The light transmittance test of optical polished sheets is an important part of evaluating the performance of optical lenses. By sensing the loss of light flux passing through the lens, the light transmittance of the polished sheet within a specific wavelength range is evaluated, and the effective transmission efficiency of the polished sheet in the optical system is determined. This plays a decisive role in calculating the overall performance of the optical system. This test method is called "spectral transmittance test method". First, the light source of the spectrophotometer is adjusted to the required wavelength range, and then the polished sheet to be tested is placed in the test path. The light intensity passing through the polished sheet is measured and compared with the unfiltered light intensity to obtain the optical transmittance result.

[0003] Existing detection technologies mainly rely on manual installation and debugging, which is time-consuming and labor-intensive, with low detection efficiency. Automated testing workshops are rarely used, and interference from personnel in the on-site environment will also affect the accuracy of transmittance detection. Summary of the invention

[0004] The object of the present invention is to provide a light transmission detection device and method for optical polishing sheets to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a light transmittance detection device for optical polishing sheets, comprising a detection chamber and a robotic arm, wherein the robotic arm is arranged outside the detection chamber, a detection mechanism is arranged at the upper end inside the detection chamber, a light source is also arranged inside the detection chamber, the detection mechanism is composed of a rotating assembly and a clamping assembly, a suction cup clamp is arranged at the execution end of the robotic arm, the suction cup clamp is composed of a fixed cover and a movable column, the movable column is installed in the fixed cover, a spring is arranged between the movable column and the fixed cover, and a lens suction cup is arranged at the end of the movable column away from the robotic arm.

[0006] Furthermore, the rotating assembly includes a fixed bevel gear, a planetary bevel gear and a transfer arm, the fixed bevel gear is invertedly installed at the top of the detection chamber, the transfer arm is rotatably installed above the fixed bevel gear, a servo motor is installed at one end of the transfer arm, a rotating shaft is installed on the servo motor, a planetary bevel gear is installed on the rotating shaft, the planetary bevel gear is meshed with the fixed bevel gear for transmission, the servo motor drives the rotating shaft to rotate, the rotating shaft drives the planetary bevel gear to rotate, the planetary bevel gear rolls along the surface of the fixed bevel gear, and then drives the rotating assembly to rotate around the axis of the fixed bevel gear.

[0007] Furthermore, the clamping assembly is arranged at one end of the rotating shaft away from the servo motor, and the clamping assembly includes an electric push rod, a protective shell and a receiver. The electric push rod is connected to the rotating shaft, and the protective shell is installed on the electric push rod. The piston rod of the electric push rod passes through the protective shell, and a receiver is installed at the end of the piston rod of the electric push rod. The clamping assembly rotates around the axis of the rotating shaft while revolving around the axis of the fixed bevel gear, driving the optical polishing sheet to move around the light source, and the receiver comprehensively detects the light transmittance of the optical polishing sheet through the received light.

[0008] Furthermore, the clamping assembly also includes a pair of parallel connecting rod groups, which are symmetrically installed in the protective shell, and the pair of parallel connecting rod groups are located on both sides of the piston rod. A translation clamp is installed on each parallel connecting rod group, and a pair of linkage rods are symmetrically arranged on the piston rod. Each linkage rod is rotatably connected to a group of parallel connecting rod groups. The translation clamp and the receiver are both provided with a pressure sensor, and the pressure sensor is connected to the control system through a circuit. When the optical polishing sheet contacts the receiver, the piston rod is pushed inward through the receiver, and after the piston rod moves, the parallel connecting rods on both sides are moved through the two linkage rods. Rod group, the parallel connecting rod group drives the two translational jaws to move closer to the middle to clamp the optical polishing sheet. When the pressure sensor on the parallel connecting rod group reaches the preset detection pressure, it means that the translational jaws firmly clamp the optical polishing sheet, and the electric push rod locks the piston rod, and the piston rod no longer moves. Since the parallel connecting rod group is used to drive the translational jaws to move, the clamping force directions of the two translational jaws on the optical polishing sheet are horizontally relative, so that the clamping forces of the two translational jaws are balanced with each other, and the optical polishing sheet obtains a larger clamping positive pressure, which ensures the stability of the optical polishing sheet clamping and indirectly improves the accuracy of the optical polishing sheet transmittance detection.

[0009] Furthermore, the fixed cover is installed at the execution end of the mechanical arm, a main air cavity is arranged in the fixed cover, the movable column is arranged in the main air cavity, the movable column is sealingly and slidably connected with the main air cavity, the spring is located in the main air cavity, a plurality of external air holes are evenly distributed in a ring shape on the fixed cover, a plurality of the external air holes are communicated with the main air cavity, the movable column blocks a plurality of external air holes, the mechanical arm drives the movable column to squeeze the optical polishing sheet, the movable column moves toward the inside of the fixed cover, as the air in the main air cavity is compressed, the compressed air enters the side groove through the control air hole, the large plunger in the side groove moves upward, the large plunger drives the small plunger to move upward through the sealing plate, the air pressure in the sliding core cavity increases, while the movable column moves toward the inside of the fixed cover, the inner air hole and the outer air hole are in a connected state, so the gas in the sliding core cavity can be discharged through the path of the inner air hole and the outer air hole; The movement of the small plunger reduces the air pressure in the center groove, that is, the lens suction cup generates negative pressure, which firmly adsorbs the optical polishing sheet until the upper wedge block on the movable column contacts the upper wedge groove, causing the movable column to deflect, the inner air hole and the outer air hole to be staggered, and the sliding core cavity is in a sealed state. The robotic arm lifts the optical polishing sheet through the movable column. Although the movable column is reset under the action of the spring, the air pressure in the main air cavity is in a weak negative pressure state, and the lower wedge block contacts the lower wedge groove, causing the movable column to continue to deflect, the inner air hole and the outer air hole still cannot communicate, the air pressure in the sliding core cavity is fixed, and the sealing plate cannot move downward, that is, the small plunger cannot be reset, the negative pressure in the center groove is maintained, and the optical polishing sheet is still adsorbed on the lens suction cup.

[0010] Furthermore, a plurality of upper wedge blocks and a plurality of lower wedge blocks are evenly distributed on the movable column in a circumferential manner, and the axial projection surfaces of the plurality of upper wedge blocks and the plurality of lower wedge blocks do not overlap. A plurality of upper wedge grooves and a plurality of lower wedge grooves are provided in the fixed cover, and the upper wedge blocks cooperate with the upper wedge grooves, and the lower wedge blocks cooperate with the lower wedge grooves. The upper wedge block and the plurality of lower wedge blocks are staggered at a certain angle so that the movable column can continuously deflect between a push and a return each time it is squeezed, so that the inner air hole and the outer air hole can be connected or staggered in sequence.

[0011] Furthermore, a sliding core cavity, a central groove and a side groove are provided inside the movable column, the central groove connects the sliding core cavity and the lens suction cup, the side groove is only connected to the sliding core cavity, a sealing plate is sealingly and slidingly installed in the sliding core cavity, a small plunger and a large plunger are installed at the bottom of the sealing plate, the small plunger is slidably installed in the central groove, and the large plunger is slidably installed in the side groove, the movable column squeezes the receiver through the optical polishing sheet, so that on the one hand the clamping assembly clamps the optical polishing sheet, and on the other hand the lens suction cup releases the optical polishing sheet.

[0012] Furthermore, an inner air hole and a control air hole are provided in the movable column, one end of the inner air hole is connected to the top of the sliding core cavity, the other end of the inner air hole is connected to the outer air hole, one end of the control air hole is connected to the main air cavity, and the other end of the control air hole is connected to the bottom of the side groove. After the movable column is squeezed again, the upper wedge block contacts the upper wedge groove, the movable column is deflected, the inner air hole and the outer air hole are connected to each other, and when the lens suction cup leaves the optical polishing sheet, the air pressure in the sliding core cavity is connected to the external atmosphere, the air pressure in the main air cavity is restored to normal pressure, the sealing plate drives the large plunger and the small plunger to move downward and reset, the negative pressure in the central groove is restored, and the lens suction cup is separated from the optical polishing sheet; After the optical polishing sheet inspection is completed, the robotic arm removes the optical polishing sheet from the clamping assembly and places it on the material rack. The mechanical structure generates negative pressure to adsorb the optical polishing sheet, saving the cost of the air pump and preventing the optical polishing sheet from falling due to sudden shutdown of the air pump, thereby improving the reliability of the system.

[0013] A method for using a light transmission detection device for an optical polishing sheet comprises the following steps: S1: The robot arm absorbs the optical polishing sheet to be tested through the suction cup fixture and sends the optical polishing sheet into the testing room; S2: The robot arm aligns the optical polishing sheet with the receiver, pushes the receiver with the optical polishing sheet, translates the clamp to clamp the optical polishing sheet, and releases the optical polishing sheet with the suction cup fixture; S3: The rotating assembly drives the optical polishing sheet to rotate, and the light emitted by the light source is received by the receiver through the optical polishing sheet, and the light transmittance of the optical polishing sheet is detected; S4: After the optical polishing sheet is inspected, the robot arm uses the suction cup fixture to remove the optical polishing sheet from the clamping assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By using a parallel connecting rod group to drive the translational clamping jaws to move, the directions of the clamping forces of the two translational clamping jaws on the optical polishing sheet are horizontally relative, so that the clamping forces of the two translational clamping jaws are balanced with each other, and the optical polishing sheet obtains a larger clamping positive pressure, thereby ensuring the stability of the clamping of the optical polishing sheet and indirectly improving the accuracy of the optical polishing sheet transmittance detection; the negative pressure for adsorbing the optical polishing sheet is generated by the mechanical structure, which saves the cost of the air pump, avoids the optical polishing sheet from falling due to sudden shutdown of the air pump, and improves the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 It is a structural schematic diagram of the detection chamber part of the present invention; Figure 3 It is a structural schematic diagram of the detection mechanism of the present invention; Figure 4 It is a schematic structural diagram of the protective shell part of the present invention; Figure 5 It is a schematic structural diagram of the suction cup clamp of the present invention.

[0016] Figure 6 It is a schematic diagram of the internal structure of the fixed cover of the present invention.

[0017] Figure 7 It is a schematic diagram of the internal structure of the movable column of the present invention.

[0018] In the figure: 1. detection chamber; 2. mechanical arm; 3. suction cup fixture; 4. fixed bevel gear; 5. planetary bevel gear; 6. transfer arm; 7. servo motor; 8. rotating shaft; 9. electric push rod; 10. protective shell; 11. receiver; 12. parallel connecting rod group; 13. translation clamp; 14. linkage rod; 15. fixed cover; 16. movable column; 17. lens suction cup; 18. main air cavity; 19. spring; 20. external air hole; 21. upper wedge groove; 22. upper wedge block; 23. lower wedge block; 24. internal air hole; 25. sliding core cavity; 26. central groove; 27. side groove; 28. small plunger; 29. ​​large plunger; 30. sealing plate; 31. control air hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Figure 1-Figure 7 As shown, the present invention provides a technical solution, a light transmittance detection device for an optical polishing sheet, comprising a detection chamber 1 and a robot arm 2, wherein the robot arm 2 is arranged outside the detection chamber 1, a detection mechanism is arranged at the upper end inside the detection chamber 1, a light source (not shown in the figure) is also arranged inside the detection chamber 1, the detection mechanism is composed of a rotating assembly and a clamping assembly, a suction cup fixture 3 is arranged at the execution end of the robot arm 2, the suction cup fixture 3 is composed of a fixed cover 15 and a movable column 16, the movable column 16 is installed in the fixed cover 15, a spring 19 is arranged between the movable column 16 and the fixed cover 15, and a lens suction cup 17 is arranged at the end of the movable column 16 away from the robot arm 2.

[0021] The rotating assembly includes a fixed bevel gear 4, a planetary bevel gear 5 and a transfer arm 6. The fixed bevel gear 4 is invertedly installed at the top of the detection chamber 1. The transfer arm 6 is rotatably installed above the fixed bevel gear 4. A servo motor 7 is installed at one end of the transfer arm 6. A rotating shaft 8 is installed on the servo motor 7. A planetary bevel gear 5 is installed on the rotating shaft 8. The planetary bevel gear 5 is meshed with the fixed bevel gear 4 for transmission. The clamping assembly is arranged at one end of the rotating shaft 8 away from the servo motor 7. The clamping assembly includes an electric push rod 9, a protective shell 10 and a receiver 11. The electric push rod 9 is connected to the rotating shaft 8. The protective shell 10 is installed on the electric push rod 9, and the piston rod of the electric push rod 9 passes through the protective shell 10. A receiver 11 is installed at the end of the piston rod of the electric push rod 9. The servo motor 7 drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the planetary bevel gear 5 to rotate. The planetary bevel gear 5 rolls along the surface of the fixed bevel gear 4, and then drives the rotating component to rotate around the axis of the fixed bevel gear 4. The clamping component rotates around the axis of the rotating shaft 8 while revolving around the axis of the fixed bevel gear 4, driving the optical polishing sheet to move around the light source. The receiver 11 comprehensively detects the light transmittance of the optical polishing sheet through the received light.

[0022] The clamping assembly also includes a pair of parallel connecting rod groups 12, which are symmetrically installed in the protective shell 10, and the pair of parallel connecting rod groups 12 are located on both sides of the piston rod. A translation clamp 13 is installed on each parallel connecting rod group 12, and a pair of linkage rods 14 are symmetrically arranged on the piston rod. Each linkage rod 14 is rotatably connected to a group of parallel connecting rod groups 12. The translation clamp 13 and the receiver 11 are both provided with a pressure sensor, and the pressure sensor is connected to the control system through a circuit. When the optical polishing sheet contacts the receiver 11, the piston rod is pushed inward through the receiver 11. After the piston rod moves, the parallel rods on both sides are moved through the two linkage rods 14. The connecting rod group 12, the parallel connecting rod group 12 drives the two translational jaws 13 to move toward the middle to clamp the optical polishing sheet. When the pressure sensor on the parallel connecting rod group 12 reaches the preset detection pressure, it means that the translational jaws 13 firmly clamp the optical polishing sheet, and the electric push rod 9 locks the piston rod, and the piston rod no longer moves. Since the parallel connecting rod group 12 is used to drive the translational jaws 13 to move, the clamping force directions of the two translational jaws 13 on the optical polishing sheet are horizontally relative, so that the clamping forces of the two translational jaws 13 are balanced with each other, and the optical polishing sheet obtains a larger clamping positive pressure, which ensures the stability of the optical polishing sheet clamping and indirectly improves the accuracy of the optical polishing sheet transmittance detection.

[0023] The fixed cover 15 is installed at the execution end of the robot arm 2. A main air cavity 18 is arranged in the fixed cover 15. The movable column 16 is arranged in the main air cavity 18. The movable column 16 is sealed and slidably connected with the main air cavity 18. The spring 19 is located in the main air cavity 18. A plurality of external air holes 20 are evenly distributed in an annular shape on the fixed cover 15. The plurality of external air holes 20 are connected with the main air cavity 18. The movable column 16 blocks the plurality of external air holes 20. The robot arm 2 drives the movable column 16 to squeeze the optical polishing sheet. The movable column 16 moves to the main air cavity 18. The fixed cover 15 moves inside, and as the air in the main air chamber 18 is compressed, the compressed air enters the side groove 27 through the control air hole 31, and the large plunger 29 in the side groove 27 moves upward, and the large plunger 29 drives the small plunger 28 to move upward through the sealing plate 30, and the air pressure in the sliding core chamber 25 increases. When the movable column 16 moves toward the inside of the fixed cover 15, the inner air hole 24 is connected with the outer air hole 20, so the gas in the sliding core chamber 25 can be discharged through the path of the inner air hole 24 and the outer air hole 20; The movement of the small plunger 28 reduces the air pressure in the central groove 26, that is, the lens suction cup 17 generates negative pressure, which firmly adsorbs the optical polishing sheet until the upper wedge block 22 on the movable column 16 contacts the upper wedge groove 21, causing the movable column 16 to deflect, the inner air hole 24 and the outer air hole 20 to be staggered, and the sliding core cavity 25 to be in a sealed state. The robotic arm 2 lifts the optical polishing sheet through the movable column 16. Although the movable column 16 is reset under the action of the spring 19, the air pressure in the main air cavity 18 is in a weak negative pressure state, the lower wedge block 23 contacts the lower wedge groove, causing the movable column 16 to continue to deflect, the inner air hole 24 and the outer air hole 20 still cannot communicate, the air pressure in the sliding core cavity 25 is fixed, the sealing plate 30 cannot move downward, that is, the small plunger 28 cannot be reset, the negative pressure in the central groove 26 is maintained, and the optical polishing sheet is still adsorbed on the lens suction cup 17.

[0024] The movable column 16 is provided with a plurality of upper wedge blocks 22 and a plurality of lower wedge blocks 23 evenly distributed on the circumference, and the axial projection surfaces of the plurality of upper wedge blocks 22 and the plurality of lower wedge blocks 23 do not overlap. The fixed cover 15 is provided with a plurality of upper wedge grooves 21 and a plurality of lower wedge grooves, and the upper wedge blocks 22 cooperate with the upper wedge grooves 21, and the lower wedge blocks 23 cooperate with the lower wedge grooves. The movable column 16 is provided with a sliding core cavity 25, a central groove 26 and a side groove 27 inside, and the central groove 26 connects the sliding core cavity 25 and the lens suction cup 17, and the side groove 27 only connects the sliding core cavity 25. A sealing plate 30 is sealingly and slidingly installed in the core cavity 25, and a small plunger 28 and a large plunger 29 are installed at the bottom of the sealing plate 30. The small plunger 28 is slidably installed in the central groove 26, and the large plunger 29 is slidably installed in the side groove 27. An inner air hole 24 and a control air hole 31 are also opened in the movable column 16. One end of the inner air hole 24 is connected to the top of the sliding core cavity 25, and the other end of the inner air hole 24 is connected to the outer air hole 20. One end of the control air hole 31 is connected to the main air cavity 18, and the other end of the control air hole 31 is connected to the bottom of the side groove 27.

[0025] The upper wedge block 22 and the lower wedge blocks 23 are staggered at a certain angle so that the movable column 16 can be continuously deflected between the push and the return each time it is squeezed, so that the inner air hole 24 and the outer air hole 20 can be connected or staggered in sequence. The movable column 16 squeezes the receiver 11 through the optical polishing sheet, on the one hand, the clamping assembly clamps the optical polishing sheet, and on the other hand, the lens suction cup 17 releases the optical polishing sheet. After the movable column 16 is squeezed again, the upper wedge block 22 contacts the upper wedge groove 21, the movable column 16 is deflected, the inner air hole 24 and the outer air hole 20 are connected to each other, and the lens suction cup When 17 leaves the optical polishing sheet, the air pressure in the sliding core cavity 25 is connected to the external atmosphere, the air pressure in the main air cavity 18 returns to normal pressure, and the sealing plate 30 drives the large plunger 29 and the small plunger 28 to move downward and reset, and the negative pressure in the center groove 26 is restored. The lens suction cup 17 is separated from the optical polishing sheet. After the optical polishing sheet inspection is completed, the mechanical arm 2 removes the optical polishing sheet from the clamping assembly and places it on the material rack. The negative pressure for adsorbing the optical polishing sheet is generated through the mechanical structure, which saves the cost of the air pump, avoids the optical polishing sheet from falling due to sudden shutdown of the air pump, and improves the reliability of the system.

[0026] A method for using a light transmission detection device for an optical polishing sheet comprises the following steps: S1: The robot arm 2 absorbs the optical polishing sheet to be tested through the suction cup fixture 3 and sends the optical polishing sheet into the testing chamber 1; S2: The robot arm 2 aligns the optical polishing sheet with the receiver 11, pushes the receiver 11 with the optical polishing sheet, translates the clamping claw 13 to clamp the optical polishing sheet, and the suction cup fixture 3 releases the optical polishing sheet; S3: The rotating assembly drives the optical polishing sheet to rotate, and the light emitted by the light source is received by the receiver 11 through the optical polishing sheet, and the light transmittance of the optical polishing sheet is detected; S4: After the optical polishing sheet is inspected, the robot arm 2 uses the suction cup fixture 3 to remove the optical polishing sheet from the clamping assembly.

[0027] The working principle of the present invention is as follows: the servo motor 7 drives the rotating shaft 8 to rotate, the rotating shaft 8 drives the planetary bevel gear 5 to rotate, the planetary bevel gear 5 rolls along the surface of the fixed bevel gear 4, and then drives the rotating component to rotate around the axis of the fixed bevel gear 4, the clamping component rotates around the axis of the rotating shaft 8 while revolving around the axis of the fixed bevel gear 4, driving the optical polishing sheet to move around the light source, and the receiver 11 comprehensively detects the light transmittance of the optical polishing sheet through the received light.

[0028] When the optical polishing sheet contacts the receiver 11, the piston rod is pushed inward through the receiver 11. After the piston rod moves, the parallel connecting rod group 12 on both sides is moved through the two linkage rods 14. The parallel connecting rod group 12 drives the two translational jaws 13 to move closer to the middle to clamp the optical polishing sheet. When the pressure sensor on the parallel connecting rod group 12 reaches the preset detection pressure, it means that the translational jaws 13 firmly clamp the optical polishing sheet, and the electric push rod 9 locks the piston rod, and the piston rod no longer moves. Since the parallel connecting rod group 12 is used to drive the translational jaws 13 to move, the clamping force directions of the two translational jaws 13 on the optical polishing sheet are horizontally relative, so that the clamping forces of the two translational jaws 13 are balanced with each other, and the optical polishing sheet obtains a larger clamping positive pressure, which ensures the stability of the clamping of the optical polishing sheet, and indirectly improves the accuracy of the optical polishing sheet transmittance detection.

[0029] The mechanical arm 2 drives the movable column 16 to squeeze the optical polishing sheet, and the movable column 16 moves toward the inside of the fixed cover 15. As the air in the main air chamber 18 is compressed, the compressed air enters the side groove 27 through the control air hole 31, and the large plunger 29 in the side groove 27 moves upward. The large plunger 29 drives the small plunger 28 to move upward through the sealing plate 30, and the air pressure in the sliding core chamber 25 increases. When the movable column 16 moves toward the inside of the fixed cover 15, the inner air hole 24 and the outer air hole 20 are in a connected state, so the gas in the sliding core chamber 25 can be discharged through the path of the inner air hole 24 and the outer air hole 20; The movement of the small plunger 28 reduces the air pressure in the central groove 26, that is, the lens suction cup 17 generates negative pressure, which firmly adsorbs the optical polishing sheet until the upper wedge block 22 on the movable column 16 contacts the upper wedge groove 21, causing the movable column 16 to deflect, the inner air hole 24 and the outer air hole 20 to be staggered, and the sliding core cavity 25 to be in a sealed state. The robotic arm 2 lifts the optical polishing sheet through the movable column 16. Although the movable column 16 is reset under the action of the spring 19, the air pressure in the main air cavity 18 is in a weak negative pressure state, the lower wedge block 23 contacts the lower wedge groove, causing the movable column 16 to continue to deflect, the inner air hole 24 and the outer air hole 20 still cannot communicate, the air pressure in the sliding core cavity 25 is fixed, the sealing plate 30 cannot move downward, that is, the small plunger 28 cannot be reset, the negative pressure in the central groove 26 is maintained, and the optical polishing sheet is still adsorbed on the lens suction cup 17.

[0030] The upper wedge block 22 and the lower wedge blocks 23 are staggered at a certain angle so that the movable column 16 can be continuously deflected between the push and the return each time it is squeezed, so that the inner air hole 24 and the outer air hole 20 can be connected or staggered in sequence. The movable column 16 squeezes the receiver 11 through the optical polishing sheet, on the one hand, the clamping assembly clamps the optical polishing sheet, and on the other hand, the lens suction cup 17 releases the optical polishing sheet. After the movable column 16 is squeezed again, the upper wedge block 22 contacts the upper wedge groove 21, the movable column 16 is deflected, the inner air hole 24 and the outer air hole 20 are connected to each other, and the lens suction cup When 17 leaves the optical polishing sheet, the air pressure in the sliding core cavity 25 is connected to the external atmosphere, the air pressure in the main air cavity 18 returns to normal pressure, and the sealing plate 30 drives the large plunger 29 and the small plunger 28 to move downward and reset, and the negative pressure in the center groove 26 is restored. The lens suction cup 17 is separated from the optical polishing sheet. After the optical polishing sheet inspection is completed, the mechanical arm 2 removes the optical polishing sheet from the clamping assembly and places it on the material rack. The negative pressure for adsorbing the optical polishing sheet is generated through the mechanical structure, which saves the cost of the air pump, avoids the optical polishing sheet from falling due to sudden shutdown of the air pump, and improves the reliability of the system.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A light transmission detection device for an optical polishing sheet, comprising a detection chamber (1) and a mechanical arm (2), wherein the mechanical arm (2) is arranged outside the detection chamber (1), and is characterized in that: A detection mechanism is arranged at the upper end of the detection chamber (1), and a light source is also arranged inside the detection chamber (1). The detection mechanism is composed of a rotating assembly and a clamping assembly. A suction cup clamp (3) is arranged at the execution end of the mechanical arm (2). The suction cup clamp (3) is composed of a fixed cover (15) and a movable column (16). The movable column (16) is installed in the fixed cover (15). A spring (19) is arranged between the movable column (16) and the fixed cover (15). A lens suction cup (17) is arranged at one end of the movable column (16) away from the mechanical arm (2); The rotating assembly comprises a fixed bevel gear (4), a planetary bevel gear (5) and a transfer arm (6); the fixed bevel gear (4) is invertedly mounted at the top of the detection chamber (1); the transfer arm (6) is rotatably mounted above the fixed bevel gear (4); a servo motor (7) is mounted at one end of the transfer arm (6); a rotating shaft (8) is mounted on the servo motor (7); a planetary bevel gear (5) is mounted on the rotating shaft (8); and the planetary bevel gear (5) is meshed with the fixed bevel gear (4) for transmission; The clamping assembly is arranged at one end of the rotating shaft (8) away from the servo motor (7), and comprises an electric push rod (9), a protective shell (10) and a receiver (11); the electric push rod (9) is connected to the rotating shaft (8), the protective shell (10) is mounted on the electric push rod (9), the piston rod of the electric push rod (9) passes through the protective shell (10), and the receiver (11) is mounted at the end of the piston rod of the electric push rod (9).

2. A light transmission detection device for an optical polishing sheet according to claim 1, characterized in that: The clamping assembly further comprises a pair of parallel link groups (12), wherein the pair of parallel link groups (12) are symmetrically mounted in the protective shell (10), the pair of parallel link groups (12) are located on both sides of the piston rod, a translational clamping jaw (13) is mounted on each parallel link group (12), a pair of linkage rods (14) are symmetrically arranged on the piston rod, each linkage rod (14) is rotationally connected to a pair of parallel link groups (12), and pressure sensors are arranged on the translational clamping jaw (13) and the receiver (11), and the pressure sensors are connected to a control system via a circuit.

3. A light transmission detection device for an optical polishing sheet according to claim 1, characterized in that: The fixed cover (15) is installed at the execution end of the mechanical arm (2), a main air cavity (18) is arranged in the fixed cover (15), the movable column (16) is arranged in the main air cavity (18), the movable column (16) is sealed and slidably connected to the main air cavity (18), the spring (19) is located in the main air cavity (18), a plurality of external air holes (20) are evenly distributed in an annular shape on the fixed cover (15), the plurality of external air holes (20) are connected to the main air cavity (18), and the movable column (16) blocks the plurality of external air holes (20).

4. A light transmission detection device for an optical polishing sheet according to claim 3, characterized in that: The movable column (16) is provided with a plurality of upper wedge blocks (22) and a plurality of lower wedge blocks (23) uniformly distributed in a circumferential manner, and the axial projection surfaces of the plurality of upper wedge blocks (22) and the plurality of lower wedge blocks (23) do not overlap. The fixed cover (15) is provided with a plurality of upper wedge grooves (21) and a plurality of lower wedge grooves, and the upper wedge blocks (22) cooperate with the upper wedge grooves (21), and the lower wedge blocks (23) cooperate with the lower wedge grooves.

5. A light transmission detection device for an optical polishing sheet according to claim 4, characterized in that: The movable column (16) is provided with a sliding core cavity (25), a central groove (26) and a side groove (27) inside. The central groove (26) connects the sliding core cavity (25) and the lens suction cup (17), and the side groove (27) is only connected to the sliding core cavity (25). A sealing plate (30) is sealingly and slidably installed in the sliding core cavity (25). A small plunger (28) and a large plunger (29) are installed at the bottom of the sealing plate (30). The small plunger (28) is slidably installed in the central groove (26), and the large plunger (29) is slidably installed in the side groove (27).

6. A light transmission detection device for an optical polishing sheet according to claim 5, characterized in that: The movable column (16) is further provided with an inner air hole (24) and a control air hole (31), one end of the inner air hole (24) is connected to the top of the sliding core cavity (25), the other end of the inner air hole (24) is communicated with the outer air hole (20), one end of the control air hole (31) is communicated with the main air cavity (18), and the other end of the control air hole (31) is communicated with the bottom of the side groove (27).

7. A method for using a light transmission detection device for an optical polishing sheet according to any one of claims 1 to 6, characterized in that: The steps include: S1: The robot arm (2) absorbs the optical polishing sheet to be inspected through the suction cup fixture (3) and sends the optical polishing sheet into the inspection chamber (1); S2: the mechanical arm (2) aligns the optical polishing sheet with the receiver (11), pushes the receiver (11) with the optical polishing sheet, translates the clamp (13) to clamp the optical polishing sheet, and the suction cup clamp (3) releases the optical polishing sheet; S3: The rotating assembly drives the optical polishing sheet to rotate, and the light emitted by the light source is received by the receiver (11) through the optical polishing sheet, and the light transmittance of the optical polishing sheet is detected; S4: After the optical polishing sheet is inspected, the robot arm (2) uses the suction cup fixture (3) to remove the optical polishing sheet from the clamping assembly.

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