Optical lens full-automatic eccentricity detector and detection method thereof

Abstract

The invention belongs to the technical field of eccentricity detection, and particularly relates to an optical lens full-automatic eccentricity detector and a detection method thereof.The full-automatic eccentricity detector comprises a detection table, an optical detection system, a data analysis system and a feeding assembly, the detection table comprises a detection base and a detector, and the detection base is provided with a limiting groove; the detector is located on the upper side of the limiting groove, and an optical detection system is carried on the detector; according to the optical lens feeding device, automation of the optical lens feeding process and the position adjusting posture is achieved, manual participation is reduced in the process, the feeding detection track of the optical lens is simplified into simple vertical reciprocating movement, operation is easy, dislocation accidents are few in the simple track movement in the feeding process, and the production efficiency is improved. The optical lens detection operation is further ensured to be smoothly carried out, and the requirement of continuous detection on a large-batch optical lens production line is met, so that the detection efficiency of the optical lens is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of eccentricity detection, in particular to an optical lens full-automatic eccentricity detector and a detection method thereof. Background Art

[0002] Lens decentering occurs when the optical center and geometric center of a lens do not coincide. This phenomenon can be caused by a variety of factors, including errors in the lens manufacturing process, deformation of the installation position, or improper installation. Accurately identifying and addressing decentering is crucial during lens measurement. Optical lens decentering can lead to reduced optical system performance, such as poor image quality and increased aberrations. Decentering detection ensures that optical lenses maintain their correct position during assembly and use, thereby maintaining optical system performance and image quality.

[0003] During the production and assembly of optical components, eccentricity detection can help discover and correct errors in the manufacturing process, improve product qualification rate and consistency, and ensure that products meet design requirements. The existing inspection process requires manual placement of the optical lenses on the production line one by one on the inspection position on the inspection instrument, and at the same time adjusting the position and posture of the optical lenses to facilitate eccentricity detection. The above process operation relies on manual operation and cannot meet the continuous inspection needs of optical lenses on large-scale production lines in the workshop, resulting in low inspection efficiency. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a fully automatic eccentricity detector for optical lenses and a detection method thereof.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a fully automatic eccentricity detector for optical lenses, comprising a detection platform, an optical detection system, a data analysis system, and a loading assembly. The detection platform comprises a detection base and a detector. A limit groove is provided on the detection base. The detector is located above the limit groove. The detector is equipped with a laser generator, an industrial camera, and a laser displacement sensor in the optical detection system. A limiting platform is provided inside the limiting groove, a limiting hole is provided on the top of the limiting platform, a vacuum pump is provided inside the limiting platform, and the bottom of the limiting platform is connected to a rotating device provided on the inner wall of the limiting groove; The loading assembly automatically transfers the optical lenses on the production line to the top of the limit table on the limit slot to achieve automatic loading; The inner wall of the limit groove is annularly distributed with positioning claws, and the positioning claws adjust the position of the optical lens placed on the upper side of the limit platform; the inner wall of the limit groove is slidably provided with a detection plate at the part below the positioning claws, and the upper surface of the detection plate is provided with a detection scale.

[0006] Preferably, the feeding assembly includes a feeding conveyor belt, the feeding conveyor belt transversely passes through the feeding trough on the detection base, and the feeding trough transversely passes through the limiting groove; The surface of the belt body of the feeding conveyor belt is evenly provided with installation grooves, a transfer box is provided on the installation groove, the optical lens is located inside the transfer box, and a transfer hole is provided at the bottom of the transfer box, the limit platform is located at the lower side of the transfer hole, and a telescopic device is provided between the limit platform and the output end of the rotating device.

[0007] Preferably, an annular closing ring is provided on the inner wall of the transfer box near the opening, and the closing ring is an elastic hollow structure.

[0008] Preferably, the detection plate is of split design and is symmetrically arranged on the closed groove on the inner wall of the limiting groove, and semicircular receiving grooves are respectively provided on the adjacent ends of the detection plates on both sides.

[0009] Preferably, an adjustment groove is provided on the end of the positioning claw, the bottom of the adjustment groove is a horizontal plane, the middle part of the adjustment groove facing the edge end of the optical lens is a vertical plane, and the top of the adjustment groove is an arc surface corresponding to the top spherical surface of the optical lens.

[0010] Preferably, a guide groove is provided on the inner wall of the bottom of the adjustment groove, and the guide groove extends to the arc surface portion of the top of the adjustment groove.

[0011] Preferably, the top of the adjustment groove protrudes and extends toward the direction close to the central axis of the limiting groove, and a suction hole is provided on the end of the protruding portion of the top of the adjustment groove; A recovery channel is provided inside the positioning claw, one end of the recovery channel is communicated with the suction hole, and the other end is communicated with the recovery chamber inside the detection base through a connecting hose.

[0012] Preferably, an exhaust hole is provided at a portion of the side wall of the limiting platform corresponding to the closed groove, and the exhaust hole is communicated with the vacuum pump.

[0013] Preferably, the recovery chamber is communicated with the area inside the closed groove located on the upper side of the detection plate, and an extension groove is provided on the inner wall of the closed groove located on the upper side of the detection plate, and the extension groove is communicated with the inside of the limiting groove.

[0014] A fully automatic decentration detection method for an optical lens, the detection method using the above-mentioned fully automatic decentration detector, the detection method comprising the following steps: S1: The processed optical lens is placed on the transfer box on the feeding conveyor belt by the fully automatic robot arm. When the optical lens to be tested moves along the feeding conveyor belt into the feeding trough, the optical lens to be tested is controlled to move to the corresponding position of the limit groove and stop; S2: Start the telescopic device and drive the limit table to move vertically. The top of the limit table moves upward through the transfer hole into the transfer box and contacts the optical lens. The limit table is controlled to move upward continuously to drive the optical lens out of the transfer box and move upward to the corresponding position of the positioning claw. The vacuum pump equipment is turned off. S3: Start the positioning claw to move toward the center, so that the position and posture of the optical lens on the limit table are adjusted, so that the optical lens is straightened and the center axis coincides with the center axis of the limit table. The detector is controlled to start, and the laser generator on the detector releases the detection laser to cover the surface of the optical lens, and the limit table is controlled to rotate at the same time; S4: The position change and the amplitude of the projection of the edge of the optical lens on the upper surface of the detection plate during the rotation of the optical lens are collected by an industrial camera, and then the collected image data is transmitted to the data analysis system, and the image data is analyzed and calculated to obtain the eccentricity of the optical lens.

[0015] The beneficial effects of the present invention are as follows: The fully automatic eccentricity detector for optical lenses and the detection method thereof described in the present invention realize the automation of the optical lens loading process and position adjustment posture, reduce manual participation in this process, and also reduce the clamping and transportation process of mechanical claws. The loading detection trajectory of the optical lens is simplified into a simple vertical reciprocating movement, which is simple to operate, and the simple trajectory movement during the loading process is less likely to cause misalignment accidents; the optical lens enters the position to be tested from the bottom to the top, which can effectively avoid collision with the upper detector during the placement process from the upper side, further ensure the smooth progress of the optical lens detection operation, meet the needs of continuous detection on large-scale optical lens production lines, and thus improve the detection efficiency of optical lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the fully automatic eccentricity detector of the present invention; Figure 2 It is a cross-sectional view of the detection base in the fully automatic eccentricity detector of the present invention; Figure 3 It is a cross-sectional view of the detection base when the optical lens and the positioning claws of the present invention are matched; Figure 4 yes Figure 2 A partial enlarged view of point A in the middle; Figure 5 yes Figure 2 A partial enlarged view of point B in the middle; Figure 6 yes Figure 3 A partial enlarged view of point C in the middle; Figure 7 It is a three-dimensional diagram of the positioning claw in the present invention; Figure 8 is a three-dimensional diagram of the detection board of the present invention; Figure 9 It is a three-dimensional diagram of the transport box of the present invention; Figure 10 It is a flow chart of the detection method of the present invention.

[0018] In the figure: detection base 1, limiting groove 11, closing groove 111, extension groove 112, limiting platform 12, limiting hole 121, exhaust hole 122, positioning claw 13, adjustment groove 131, guide groove 132, suction hole 133, recovery channel 134, detection plate 14, accommodating groove 141, loading groove 15, recovery chamber 16, detector 2, loading assembly 3, loading conveyor belt 31, installation groove 32, transfer box 33, transfer hole 331, closing ring 332. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings shown in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: As shown in the accompanying drawings Figures 1-9 As shown, the present application proposes a fully automatic eccentricity detector for optical lenses, comprising a testing platform, an optical testing system, a data analysis system, and a loading assembly 3. The testing platform comprises a testing base 1, a limit slot 11 being provided on the testing base 1, a detector 2 being provided on the upper side of the limit slot 11, and the detector 2 being equipped with a laser generator, an industrial camera, and a laser displacement sensor in the optical testing system; the data analysis system can select intelligent data analysis software used in existing testing instruments for analyzing the eccentricity of optical lenses; A limiting platform 12 is provided at the bottom of the limiting groove 11 inside the detection base 1, a limiting hole 121 is provided on the top of the limiting platform 12, a micro vacuum pump is provided inside the limiting platform 12, and the bottom of the limiting platform 12 is connected to a rotating device provided on the inner wall of the limiting groove 11, where the rotating device can be an intelligent motor device; The loading component 3 automatically transfers the optical lenses on the production line to the top of the limiting platform 12 on the limiting groove 11 to achieve automatic loading; The inner wall of the limit groove 11 is distributed with positioning claws 13 in a ring shape. The positioning claws 13 here can be driven by the existing intelligent pneumatic mechanism to realize lateral reciprocating movement, and can also be moved by the control of the electric telescopic device; the positioning claws 13 adjust the posture of the optical lens placed on the upper side of the limit platform 12; the inner wall of the limit groove 11 is located below the positioning claws 13 and a detection plate 14 is slidingly provided, and a detection scale is provided on the upper surface of the detection plate 14. The detection plate 14 can also be integrated with light sources, cameras and other detection equipment to assist in collecting and analyzing the projection jitter of the edge end contour of the projected optical lens.

[0021] Specific work flow: In order to better detect the eccentricity of the optical lens and determine whether the produced optical lens meets the use requirements, an eccentricity detection instrument is needed to detect the eccentricity of the optical lens and determine whether it meets the processing error requirements. Optical lenses that meet the requirements are sent to the next inspection station, and optical lenses with large errors are returned for processing; The existing inspection process requires manual placement of the optical lenses on the production line one by one to the inspection position on the inspection instrument, and at the same time adjust the position and posture of the optical lenses to facilitate eccentricity detection; the above process operation relies on manual operation, which cannot meet the continuous inspection needs of optical lenses on large-scale production lines in the workshop, resulting in low inspection efficiency; therefore, the present application sets an automatic loading component 3, which can realize the automatic movement of the optical lenses on the production line to the limit platform 12 on the inspection base 1 through existing automatic conveyor belts, manipulators and other automated loading equipment, and then starts the positioning claws 13. The circumferentially distributed positioning claws 13 move synchronously toward the center, so that the edge ends of the optical lens are pushed toward the center, so that the position and posture of the optical lens on the limit platform 12 are adjusted, so that the optical lens is straightened and the center axis coincides with the center axis of the limit platform 12; After the adjustment is completed, the positioning claw 13 is controlled to reset, and the vacuum pump connected to the inside of the limit hole 121 is started to form a negative pressure at the opening of the limit hole 121, so that the bottom of the optical lens with the adjusted posture on the upper side is tightly adsorbed and restricted on the limit platform 12; while achieving the limit fixation of the optical lens, the detector 2 is controlled to start, and the laser generator carried on the detector 2 can be used as a detection light source to release the detection laser to cover the surface of the optical lens, and then the limit platform 12 is controlled to rotate, and the contour of the edge of the synchronously rotating optical lens is projected onto the upper surface of the detection plate 14 under the irradiation of the laser; the position change and the jump amplitude of the projection of the edge of the optical lens on the upper surface of the detection plate 14 during the rotation of the optical lens are collected by an industrial camera, and then the collected image data is transmitted to the data analysis system, and the image data is analyzed and calculated to obtain the eccentricity of the optical lens, and compared with the detection standard to determine whether it is qualified; the present application reduces manual operation by realizing the automation of the optical lens loading process and position adjustment posture, meets the needs of continuous detection on a large-scale optical lens production line, and thus improves the detection efficiency of the optical lens.

[0022] Example 2: On the basis of the first embodiment, there are many possible technical solutions for the specific implementation of automatically loading optical lenses from the production line through the loading assembly 3. All those that can achieve the above requirements are applicable to the present application. This embodiment provides a possible technical solution. Specifically, the loading assembly 3 includes a loading conveyor belt 31, which transversely passes through the loading trough 15 on the detection base 1, and the loading trough 15 transversely passes through the limit groove 11. The surface of the feeding conveyor belt 31 is evenly provided with mounting grooves 32, and a transfer box 33 is provided on the mounting groove 32; the top of the transfer box 33 is set to a magnetic material, and the part of the belt surface close to the mounting groove 32 can be set to iron or the same magnetic material, and the transfer box 33 is restricted to the mounting groove 32 by magnetic fixation; the optical lens is located inside the transfer box 33, and a transfer hole 331 is provided at the bottom of the transfer box 33, the limit platform 12 is located at the lower side of the transfer hole 331, and a telescopic device is provided between the limit platform 12 and the output end of the rotating device. The telescopic device here can be an electric telescopic rod device, so that when the rotating device is started, it can drive the integrated telescopic device and the limit platform 12, vacuum pump and other equipment to rotate synchronously; the detection plate 14 is a split design, and is symmetrically arranged on the closed groove 111 on the inner wall of the limit groove 11, and semicircular accommodating grooves 141 are respectively provided on the adjacent ends of the detection plates 14 on both sides.

[0023] Specific work flow: On the basis of the specific work flow in Example 1, the produced and processed optical lens is placed on the transfer box 33 on the loading conveyor belt 31 by the fully automatic robotic arm. The transfer box 33 is used to limit and fix the moving optical lens; when the optical lens to be tested moves into the loading trough 15 along with the belt body of the loading conveyor belt 31, the optical lens to be tested is controlled to stop when it moves to the corresponding position of the limit groove 11, and the telescopic device is started to drive the limit platform 12 to move vertically. The vertical projection area of the limit platform 12 is smaller than the transfer hole 331 set at the bottom of the transfer box 33. Therefore, the top of the limit platform 12 that moves upward passes through the transfer hole 331 and enters the interior of the transfer box 33. After the top of the limit platform 12 contacts the optical lens, the vacuum pump is started to achieve limit fixation between the optical lens and the end of the limit platform 12 by negative pressure adsorption; The control limit platform 12 is continuously moved upward to drive the optical lens to leave the transport box 33 and move upward to enter the limiting groove 11. When the optical lens moves to the height corresponding to the positioning claw 13, the upward movement is stopped, the vacuum pump equipment is turned off, and the positioning claw 13 is started to adjust the position and posture of the optical lens to ensure the smooth progress of the eccentricity detection operation; After the test is completed, the top of the limit platform 12 is kept fixedly adsorbed to the optical lens, and the limit platform 12 is controlled to move vertically downward, driving the optical lens downward to return to the interior of the transfer box 33. The vacuum pump is turned off to release the vacuum adsorption effect, leaving the optical lens inside the transfer box 33, and the limit platform 12 returns to the lower side of the loading conveyor belt 31, thus completing the loading and testing operation of the optical lens to be tested. The loading conveyor belt 31 is controlled to move, and the optical lens that has been tested is taken out of the testing position. The subsequent optical lens to be tested is moved to the upper side of the limit table 12, and the above work is repeated to realize automatic loading and testing of the optical lens. In this process, manual participation is reduced, and the clamping and transportation process of the mechanical claw is also reduced. The loading and testing track of the optical lens is simplified to a simple vertical reciprocating movement, which is simple to operate. In addition, the simple track movement during the loading process is less likely to cause misalignment accidents, and the optical lens enters the testing position from the bottom to the top, which can effectively avoid the collision between the upper detector 2 and the upper side during the placement process, further ensuring the smooth progress of the optical lens testing operation. Furthermore, in order to facilitate the vertical movement of the limit platform 12, a detection plate 14 is provided which is composed of the same two parts and is slidably connected to the closed groove 111. When the limit platform 12 moves vertically upward, in order to prevent the detection plate 14 from obstructing the vertical movement of the optical lens, the telescopic device provided between the end of the detection plate 14 and the inner wall of the closed groove 111 can be controlled to start, driving the detection plates 14 on both sides to slide horizontally and away from each other, and embedded in the closed groove 111, so that the limit groove 11 is opened, and the upward-moving limit platform 12 can smoothly pass through the position of the detection plate 14 and move to the position corresponding to the positioning claw 13 on the upper side; After the optical lens moves up and passes through the closed groove 111, the output end of the telescopic device is controlled to push the detection plates 14 on both sides to approach each other and close together, and the semicircular receiving grooves 141 on the ends of the detection plates 14 on both sides are merged to form a complete circular receiving groove 141, and the receiving groove 141 is slidably connected to the corresponding part of the limit platform 12, and the connection area between the lower limit groove 11 and the loading groove 15 is closed to prevent the processing debris brought by the movement of the loading conveyor belt 31 from penetrating upward and affecting the detection accuracy of the optical lens.

[0024] Furthermore, an annular closing ring 332 is provided on the inner wall of the transfer box 33 near the opening. The closing ring 332 is an elastic hollow structure. The inner diameter of the closing ring 332 is smaller than the outer diameter of the optical lens. In this way, the closing ring 332 plays a clamping and limiting role on the optical lens placed inside. When the optical lens tends to separate from the upper opening of the transfer box 33 under external vibration, it will be intercepted and restricted by the closing ring 332; however, during the detection process, when the limit platform 12 drives the optical lens to move vertically upward, the pressure causes the closing ring 332 to deform elastically, so that the optical lens passes smoothly, ensuring the normal progress of the detection process.

[0025] Example 3: On the basis of Example 2, an adjustment groove 131 is provided on the end of the positioning claw 13, the bottom of the adjustment groove 131 is a horizontal plane, the middle part of the adjustment groove 131 facing the edge end of the optical lens is a vertical plane, and the top of the adjustment groove 131 is a circular arc surface, which corresponds to the top spherical surface of the optical lens; a guide groove 132 is provided on the horizontal plane at the bottom of the adjustment groove 131, and the guide groove 132 extends to the circular arc surface at the top of the adjustment groove 131.

[0026] Specific workflow: Based on the specific workflow in Example 2, when the positioning claw 13 approaches the optical lens to be tested in the middle, the middle area of the adjustment groove 131 on the positioning claw 13 is at the same height as the vertical curved surface at the end of the edge of the optical lens. Therefore, when the positioning claw 13 and the optical lens contact each other, the surface of the edge of the optical lens first contacts the surface of the middle part of the adjustment groove 131. Both sides are vertical surfaces, and the mutual contact and compression cause the optical lens to be straightened if it may be tilted. The positioning claw 13 is pushed toward the center synchronously, causing the central axis of the optical lens and the central axis of the limit platform 12 to approach each other and tend to coincide with each other, thereby achieving adjustment of the position and posture of the optical lens. During this process, in order to make the adjustment of the optical lens smoother, when the edge of the optical lens contacts the positioning claw 13, the vacuum pump is controlled to start in reverse, and the air flow is released from the top opening. While the negative pressure adsorption effect is released, the bottom of the optical lens is pushed by the upward air flow. In this way, on the one hand, a part of the gravity acting on the optical lens is offset, and the gaps between the lower surface of the optical lens and the top surface of the limit platform 12 and the horizontal part of the bottom of the adjustment groove 131 are all filled with air flow. The gap is increased, and the friction on the lower surface of the optical lens is reduced, making the horizontal position adjustment of the optical lens smoother, and also reducing the wear on the bottom surface of the optical lens during the position adjustment process; in this process, the limit platform 12 can be directly controlled to move downward slightly, so that the gap between the top of the limit platform 12 and the lower surface of the optical lens is increased, so as to avoid the adverse effects of the contact friction between the top of the limit platform 12 and the lower surface of the optical lens on the posture adjustment process of the optical lens; On the other hand, the airflow released upward from the top opening of the limiting platform 12 flows upward along the surface of the optical lens after impacting the lower surface of the optical lens. Part of the airflow enters the gap between the adjustment groove 131 and the edge end of the optical lens along the guide groove 132 on the inner wall of the adjustment groove 131, thereby reducing the wear of the optical lens caused by the positioning claw 13 when the optical lens posture is adjusted. At the same time, the flowing airflow fully wraps the surface of the optical lens and takes away processing impurities adhered to the surface of the optical lens, thereby preventing these processing impurities from increasing the wear of the optical lens in the contact gap with the positioning claw 13, and also reducing the situation where processing impurities adhere to the surface of the optical lens and increase the detection error. Furthermore, the horizontal surface at the bottom and the arc surface at the top of the adjustment groove 131 can be made of elastic materials, while the middle vertical surface is made of rigid material with a smooth surface; in this way, when the end of the edge of the optical lens contacts the middle vertical surface of the adjustment groove 131, the upward airflow is guided by the guide groove 132 to reduce the friction resistance between the end of the edge of the optical lens and the middle vertical surface of the adjustment groove 131, and then by adjusting the output of the vacuum pump, the intensity of the upward lifting airflow to the optical lens changes periodically, prompting the optical lens to slide vertically in a small range between the bottom and top of the adjustment groove 131, so that the gap between the upper and lower spherical surfaces of the optical lens and the adjustment groove 131 increases, allowing the airflow to enter and fully flush the upper and lower spherical surfaces of the optical lens, thereby achieving full cleaning of the optical lens; in this process, the contact and extrusion effect between the end of the positioning claw 13 and the optical lens is reduced, facilitating the small vertical movement of the optical lens.

[0027] Example 4: On the basis of the third embodiment, the top of the adjustment groove 131 extends toward the direction close to the central axis of the limiting groove 11, and a suction hole 133 is provided on the inner wall of the adjustment groove 131 near the top; a recovery channel 134 is provided inside the positioning claw 13, and one end of the recovery channel 134 is connected to the suction hole 133, and the other end is connected to the recovery chamber 16 inside the detection base 1 through a connecting hose; The connecting hose is a telescopic hose structure, and a miniature air pump device can be set inside the recovery chamber 16. The air extraction end is connected to the interior of the recovery chamber 16, and a filter can be set between the air extraction end and the interior of the recovery chamber 16 to intercept processing impurities in the air flow and keep them inside the recovery chamber 16; the air outlet end of the air pump device is connected to the interior of the closed groove 111 through a pipe, so that the recovery chamber 16 is connected to the area inside the closed groove 111 located on the upper side of the detection plate 14; and the inner wall of the closed groove 111 is provided with an extension groove 112 at the position above the detection plate 14, and the extension groove 112 is connected to the interior of the limit groove 11; An air extraction hole 122 is provided at the bottom of the limiting platform 12 , and a vacuum pump may be connected to the air extraction hole 122 .

[0028] Specific working process: Based on the specific working process in Example 3, the end of the positioning claw 13 corresponding to the top of the adjustment groove 131 is protruded outward. In this way, when the optical lens and the adjustment groove 131 contact each other, the protruding part of the top of the adjustment groove 131 is first moved to the upper side of the optical lens, and the curved surface of the inner wall of the top of the adjustment groove 131 is in contact with the upper surface of the optical lens, which reduces the contact wear of the optical lens and has a limiting effect on the optical lens supported by the upward airflow, so that the optical lens is limited in the vertical direction; When the optical lens is limited between the adjustment slots 131, the air pump device inside the recovery chamber 16 is started to draw air in through the suction hole 133, forming a negative pressure in the middle area of the upper side of the optical lens, prompting the airflow flowing out of the top opening of the limiting hole 121 to pass upward through the bottom surface and edge of the optical lens, and then flow to the negative pressure area in the middle of the upper side of the optical lens, and then be drawn into the suction hole 133, so that the upward-flowing airflow can fully wrap the outer surface of the optical lens, thereby achieving sufficient cleaning of the optical lens and reducing the adverse effects of processing impurities on the optical lens detection process; and the suction of the suction hole 133 also intercepts and disturbs the upward-flowing airflow, so that the processing impurities therein are intercepted and recovered by the recovery chamber 16; The air flow sucked into the recovery chamber 16 flows into the closed groove 111 along the pipeline under the action of the air pump, and flushes the upper surface of the detection plate 14 along the extension groove 112, taking away the processing impurities that may adhere to the upper surface of the detection plate 14. Because as the limit platform 12 moves upward, the air extraction hole 122 on the outer surface of the limit platform 12 is located on the upper side of the middle part of the detection plate 14. The action of the vacuum pump prompts the air extraction hole 122 to start extracting air and replenish it into the limit hole 121, so that the upper surface of the detection plate 14 is fully flushed and cleaned, reducing the influence of the processing impurities on the upper surface of the detection plate 14 on the detection process; Regarding the communication mode between the vacuum pump and the air extraction hole 122, the vacuum pump can be directly connected to the air extraction hole 122, so that when the vacuum pump is started, air is drawn in or released through the air extraction hole 122 to achieve adsorption, fixation or flushing and cleaning of the upper optical lens; The vacuum pump can also be located at the lower side of the exhaust hole 122. When the air flow is released, the vertical upward air flow inside the limiting hole 121 causes the internal air pressure to decrease, thereby causing the external air flow to pass through the exhaust hole 122 to replenish the interior; at this time, the exhaust hole 122 can be set as a conical hole, and the end located on the outer surface is the large end, which makes it easier for the air flow to enter, or a one-way valve can be directly set to only allow the air flow to flow in; in order to avoid processing impurities from mixing into the upward air flow and causing scratches on the optical lens, a filter can be set at the top opening position of the limiting hole 121, so that the processing impurities in the supplementary inflowing air flow are intercepted inside the limiting hole 121, ensuring the integrity of the optical lens; it is necessary to open the limiting platform 12 and the recovery chamber 16 regularly and clean the processing impurities enriched inside to ensure the smooth and continuous progress of the detection process.

[0029] Embodiment 5: Based on the above embodiment, as shown in the accompanying drawings Figure 10 As shown, a fully automatic decentration detection method for an optical lens is provided, wherein the detection method uses the above-mentioned fully automatic decentration detector and comprises the following steps: S1: The processed optical lens is placed on the transfer box 33 on the feeding conveyor belt 31 by the fully automatic robot arm. When the optical lens to be tested moves along the feeding conveyor belt 31 into the feeding trough 15, the optical lens to be tested is controlled to move to the corresponding position of the limit groove 11 and stop; S2: Start the telescopic device and drive the limit platform 12 to move vertically. The top of the limit platform 12 that moves upward passes through the transfer hole 331 and enters the interior of the transport box 33 and contacts the optical lens. The limit platform 12 is controlled to continue to move upward to drive the optical lens out of the transport box 33 and move upward to the corresponding position of the positioning claw 13. The vacuum pump device is turned off. S3: Start the positioning claw 13 to move toward the center, so that the position and posture of the optical lens on the limit platform 12 are adjusted, so that the optical lens is straightened and the central axis coincides with the central axis of the limit platform 12. The detector 2 is controlled to start, and the laser generator carried by the detector 2 releases the detection laser to cover the surface of the optical lens, and the limit platform 12 is controlled to rotate at the same time; S4: The position change and the amplitude of the projection of the edge of the optical lens located on the upper surface of the detection plate 14 during the rotation of the optical lens are collected by an industrial camera, and then the collected image data is transmitted to the data analysis system, and the image data is analyzed and calculated to obtain the eccentricity of the optical lens.

[0030] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic eccentricity detector for optical lenses, comprising a detection platform, an optical detection system, a data analysis system and a feeding assembly (3), wherein the detection platform comprises a detection base (1) and a detector (2), wherein a limit groove (11) is provided on the detection base (1), and the detector (2) is located above the limit groove (11), and the detector (2) is equipped with a laser generator, an industrial camera and a laser displacement sensor in the optical detection system; Its characteristics are: A limiting platform (12) is provided inside the limiting groove (11), a limiting hole (121) is provided on the top of the limiting platform (12), a vacuum pump is provided inside the limiting platform (12), and the bottom of the limiting platform (12) is connected to a rotating device provided on the inner wall of the limiting groove (11); The loading assembly (3) automatically transfers the optical lenses on the production line to the top of the limiting platform (12) on the limiting groove (11), thereby realizing automatic loading; Positioning claws (13) are distributed in an annular pattern on the inner wall of the limiting groove (11), and the positioning claws (13) adjust the position of the optical lens placed on the upper side of the limiting platform (12); a detection plate (14) is slidably provided on the inner wall of the limiting groove (11) below the positioning claws (13), and a detection scale is provided on the upper surface of the detection plate (14).

2. The fully automatic eccentricity detector for optical lenses according to claim 1, characterized in that: The feeding assembly (3) comprises a feeding conveyor belt (31), the feeding conveyor belt (31) transversely passes through a feeding trough (15) on the detection base (1), and the feeding trough (15) transversely passes through the limiting groove (11); The surface of the feeding conveyor belt (31) is evenly provided with mounting grooves (32), a transfer box (33) is provided on the mounting groove (32), the optical lens is located inside the transfer box (33), and a transfer hole (331) is provided at the bottom of the transfer box (33), the limiting platform (12) is located at the lower side of the transfer hole (331), and a telescopic device is provided between the limiting platform (12) and the output end of the rotating device.

3. The fully automatic eccentricity detector for optical lenses according to claim 2, characterized in that: An annular closed ring (332) is provided on the inner wall of the transfer box (33) near the opening, and the closed ring (332) is an elastic hollow structure.

4. The fully automatic eccentricity detector for optical lenses according to claim 3, characterized in that: The detection plate (14) is of split design and is symmetrically arranged on the closed groove (111) on the inner wall of the limiting groove (11), and semicircular receiving grooves (141) are respectively arranged on the adjacent ends of the detection plates (14) on both sides.

5. The fully automatic eccentricity detector for optical lenses according to claim 4, characterized in that: An adjustment groove (131) is provided on the end of the positioning claw (13); the bottom of the adjustment groove (131) is a horizontal surface; the middle portion of the adjustment groove (131) facing the edge of the optical lens is a vertical surface; and the top of the adjustment groove (131) is an arc surface corresponding to the top spherical surface of the optical lens.

6. The fully automatic eccentricity detector for optical lenses according to claim 5, characterized in that: A guide groove (132) is provided on the inner wall of the bottom of the adjustment groove (131), and the guide groove (132) extends to the arc surface portion of the top of the adjustment groove (131).

7. The fully automatic eccentricity detector for optical lenses according to claim 6, characterized in that: The top of the adjustment groove (131) protrudes and extends in a direction close to the central axis of the limiting groove (11), and a suction hole (133) is provided at the end of the protruding portion of the top of the adjustment groove (131); A recovery channel (134) is provided inside the positioning claw (13), one end of the recovery channel (134) is communicated with the suction hole (133), and the other end is communicated with the recovery chamber (16) inside the detection base (1) through a connecting hose.

8. The fully automatic eccentricity detector for optical lenses according to claim 7, characterized in that: An air extraction hole (122) is provided at a portion of the side wall of the limiting platform (12) corresponding to the closed groove (111), and the air extraction hole (122) is communicated with the vacuum pump.

9. The fully automatic eccentricity detector for optical lenses according to claim 8, characterized in that: The recovery chamber (16) is in communication with an area inside the closed groove (111) located on the upper side of the detection plate (14), and an extension groove (112) is provided on the inner wall of the closed groove (111) located on the upper side of the detection plate (14), and the extension groove (112) is in communication with the interior of the limiting groove (11).

10. A method for fully automatic decentration detection of optical lenses, the method using the fully automatic decentration detector according to any one of claims 1 to 9, characterized in that: The detection method comprises the following steps: S1: The processed optical lens is placed on the transfer box (33) on the feeding conveyor belt (31) by a fully automatic robot arm. When the optical lens to be tested moves along the feeding conveyor belt (31) and enters the feeding slot (15), the optical lens to be tested is controlled to move to the corresponding position of the limit slot (11) and stop; S2: Start the telescopic device and drive the limit platform (12) to move vertically. The top of the limit platform (12) that moves upward passes through the transfer hole (331) and enters the interior of the transfer box (33) and contacts the optical lens. The limit platform (12) is controlled to move upward continuously to drive the optical lens to leave the transfer box (33) and move upward to the corresponding position of the positioning claw (13). The vacuum pump device is turned off. S3: Start the positioning claw (13) to move toward the center, so that the position and posture of the optical lens on the limit table (12) are adjusted, so that the optical lens is straightened and the central axis coincides with the central axis of the limit table (12), and the detector (2) is controlled to start, and the laser generator on the detector (2) releases the detection laser to cover the surface of the optical lens, and at the same time controls the limit table (12) to rotate; S4: The position change and the amplitude of the projection of the edge of the optical lens on the upper surface of the detection plate (14) during the rotation of the optical lens are collected by an industrial camera, and the collected image data are then transmitted to a data analysis system, and the image data are analyzed and calculated to obtain the eccentricity of the optical lens.

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