Defect detection equipment for optical lens

Abstract

The invention belongs to the technical field of optical equipment detection, particularly relates to defect detection equipment for an optical lens, and aims to solve the problem of low detection efficiency caused by frequent replacement of a clamping position during detection due to the fact that a clamping mode in the prior art shields a part of a detection surface. An anti-falling bearing is embedded in the middle of the fixing seat, a rotating bracket is rotationally connected into the anti-falling bearing, the rotating bracket comprises a main supporting pipe rotationally connected into the anti-falling bearing, and three radial cantilever fixing rods are arranged at the top end of the main supporting pipe. According to the invention, the lens body can be fixed only by slightly pressing the lens body on the surfaces of the plurality of suckers before detection, and all the pull ropes can be pulled at the same time only by controlling the synchronous disc chuck to move horizontally and downwards when the lens body needs to be taken out after detection is finished; therefore, the suction cup adsorbed on the surface of the lens body is inclined and leaks air, namely the suction cup is separated from the suction cup.

Description

Technical Field

[0001] The present invention relates to the technical field of optical equipment detection, and in particular to a defect detection device for an optical lens. Background Art

[0002] Optical lens defect detection is a key step to ensure the quality of optical lenses, especially in high-precision applications such as camera lenses, microscopes, lasers, fiber-optic communication systems, projectors and other equipment. Lens defects may lead to reduced optical imaging quality and affect the performance of the equipment. Through efficient defect detection methods, various defects of the lens can be identified early to ensure the qualified rate in its production process.

[0003] After searching, it is found that in the prior art, when inspecting an optical lens, in order to avoid clamping damage to the lens surface, the lens is usually clamped from the side. This clamping method has the following disadvantages: it is easy to bend a relatively flat concave lens, or even cause unnecessary damage; secondly, when clamping from the side, it is inevitable that part of the front or back side will be blocked, and the entire side cannot be exposed. In view of this clamping method that blocks part of the inspection surface and requires frequent changes in the clamping position during inspection, we propose a single-sided fixing mechanism to enable comprehensive inspection of one side of the optical lens. Summary of the invention

[0004] In view of the technical problem that the clamping method in the prior art blocks part of the detection surface, resulting in the need to frequently change the clamping position during detection, leading to low detection efficiency, the present invention adopts the following technical solution: A defect detection device for an optical lens comprises a fixed seat, wherein an anti-slipping bearing is embedded in the middle of the fixed seat, and a rotating bracket is rotatably connected in the anti-slipping bearing, wherein the rotating bracket comprises a main support tube rotatably connected in the anti-slipping bearing, wherein three radial cantilever fixing rods are arranged at the top end of the main support tube, wherein a vertical circular hole is opened at one end of each cantilever fixing rod away from the main support tube, wherein a suction cup mechanism is arranged at each circular hole, wherein the suction cup mechanism comprises a load-bearing sliding tube slidably inserted in the circular hole, and a plurality of H-shaped support rods symmetrically distributed in the center are fixed near the top end of the circumferential outer wall of the load-bearing sliding tube, wherein the structure on each H-shaped support rod is the same The same, and the top end of the H-shaped support rod is rotatably connected to a fixed top rod vertical to the plate surface, and the top end of the fixed top rod is fixed with a suction cup with a trumpet mouth facing upward; a spring baffle is reserved in the middle of the H-shaped support rod, and a clamping spring is fixed between the spring baffle and the part below the center of the rotating shaft of the fixed top rod; a limiting baffle is fixed near the top end of the H-shaped support rod; the curvature of the openings at the top ends of multiple suction cups is adapted to the curvature of the surface of the lens body; a roller groove is opened on the circumferential outer wall of the bearing slide tube near the root of the H-shaped support rod, and a pull rope is fixed to the bottom end of each fixed top rod, and multiple pull ropes pass through the corresponding roller grooves to fix the same synchronous flower disc.

[0005] Preferably, the suction cup mechanism also includes a fixed arm rod fixed to the inner wall of the supporting sliding tube, and an electrically controlled positioning pin with an extension rod facing downward is fixed in the middle of the fixed arm rod, and the end of the extension rod of the electrically controlled positioning pin is fixed to the middle of the upper surface of the synchronous disc; by controlling the extension rod of the electrically controlled positioning pin to extend, three pull ropes can be pulled at the same time to pull the bottom ends of the corresponding fixed top rods, thereby achieving the simultaneous falling off of multiple suction cups.

[0006] Preferably, a fixed pulley with a groove is provided in each of the roller grooves, and the corresponding pull rope is wound in the groove of the fixed pulley; thus, the wear on the pull rope can be reduced.

[0007] Preferably, two symmetrical roller frames are fixed to the inner wall of the bottom end of the load-bearing slide tube, and the same abutment wheel is arranged between the two roller frames, and the abutment wheel protrudes out of the plane where the tube opening at the bottom end of the load-bearing slide tube is located; the upper surface of the fixed seat is fixed with a guide rail washer that is adapted to the center position of the abutment wheel, and the abutment wheel carries the suction cup mechanism and can rotate on the guide rail washer; a trapezoidal raising block is fixed to the upper surface of the guide rail washer near the right side, i.e., the detection station; and a positioning slot is reserved in the middle of the upper surface of the trapezoidal raising block.

[0008] Preferably, the inner wall of the circular hole at the end of the cantilever fixing rod is provided with a vertical ridge, and the circumferential outer wall of the supporting sliding tube is provided with an anti-twist groove that engages with the ridge to form a sliding fit; this can prevent the entire suction cup mechanism from rotating when sliding up and down.

[0009] Preferably, the main support tube is vertically fixed in the middle of the anti-slip bearing, and a worm gear is sleeved and fixed on the circumferential outer wall of the bottom end of the main support tube; a motor fixing frame is fixed to the edge of the worm gear on the lower surface of the fixed seat near the edge of the worm gear, and a driving motor is fixed to the lower surface of the motor fixing frame, and a worm that meshes with the worm gear is fixed to the top end of the output shaft of the driving motor; by setting a worm-driven rotating bracket to rotate, when the lens body to be inspected arrives at the inspection station, as long as the driving motor stops rotating, the operation above the fixed seat will not affect the slight rotation of the overall rotating bracket, and a certain reverse self-locking effect is achieved.

[0010] Preferably, a fixing ring is fixed to the top of the main support tube, a wire passing hole is opened on the circumferential outer wall of the fixing ring near the middle of each cantilever fixing rod, and an electric slip ring is arranged on the circumferential inner wall of the main support tube near the bottom end, and the electrically controlled positioning pin is connected to the power supply through the corresponding electric slip ring.

[0011] Preferably, two positioning screws are fixed to one end of the suction cup away from the opening, and a through hole for fixing the two positioning screws is provided at the top of the fixed top rod, so that the elevation angle of the suction cup can be changed, thereby adsorbing and fixing lens bodies with different curvatures.

[0012] Preferably, beam columns are fixed at both corners of the upper surface of the fixed seat located at the right end, and the same arc-shaped cross beam in a "mountain" shape structure is fixed between the tops of the two beam columns. Two symmetrically arranged tapered roller bearings are embedded in the middle position of the arc top of the arc-shaped cross beam, and the two tapered roller bearings are located directly above the trapezoidal elevation block. A transmission rod is rotatably connected between the two tapered roller bearings. The upper and lower ends of the transmission rod are respectively fixed with a driven pulley and a scraper clamping seat; a soft scraper is clamped on the lower surface of the scraper clamping seat, and the shape radian of the lower surface of the soft scraper is adapted to the shape radian of the upper surface of the lens body of this batch; and dark ink is adsorbed inside the soft scraper; a counterweight beam extending outward is fixed at the arc bottom of the arc-shaped cross beam, and a reduction motor is fixed at the end of the counterweight beam. The top of the output shaft of the reduction motor is fixed with a driving pulley; the same transmission belt is wound between the circumferential outer walls of the driving pulley and the driven pulley.

[0013] Preferably, a convex chute is opened at one end of the scraper clamping seat far away from the transmission rod, and a sliding clamping strip is slidably inserted in the convex chute. A plurality of fixed connecting rods are fixed on the lower surface of the sliding clamping strip, and the top end of the soft scraper is fixed at the bottom end of the fixed connecting rod; it is convenient to draw out the soft scraper for cleaning and ink replenishment.

[0014] The beneficial effects in the present invention are as follows: 1. By setting the suction cup mechanism for adsorbing and fixing from below the lens body, when detecting, the lens body can be fixed by gently pressing it on the surfaces of multiple suction cups. And when the lens body needs to be taken out after the detection is completed, only need to control the synchronous flower disc to move horizontally downward to simultaneously pull all the pull ropes, then the suction cups adsorbed on the surface of the lens body will be skewed and leak air, that is, they will be detached from the adsorption, and then it can be taken away manually or by a manipulator.

[0015] 2. By setting the trapezoidal elevation block, when the suction cup mechanism clamps the lens body and moves to the middle of the detection station, it can be automatically lifted and fixed by the positioning notch, which is beneficial to quickly and accurately reach the detection position.

[0016] 3. By setting the soft scraper with dark ink, in cooperation with the trapezoidal elevation block with an upward pushing function, when the clamped lens body rotates to the lower part of the soft scraper, its surface can be quickly brushed in a circle. If there are micro-cracks on its surface, the dark ink will be adsorbed, which can not only quickly distinguish but also make a mark by the way. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a defect detection device for an optical lens proposed by the present invention; Figure 2 It is a side view of a defect detection device for an optical lens proposed by the present invention; Figure 3 This is a front view of a defect detection device for an optical lens proposed by the present invention; Figure 4 A defect detection device for an optical lens proposed by the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA; Figure 5 This is a schematic diagram of a bottom-up stereoscopic structure of an optical lens defect detection device proposed by the present invention; Figure 6 This is a schematic diagram of the assembly structure of a soft scraper in an optical lens defect detection device proposed by the present invention; Figure 7 This is a schematic structural diagram of a rotating bracket in an optical lens defect detection device proposed by the present invention; Figure 8 This is a schematic diagram of the half-section three-dimensional structure of a suction cup mechanism in an optical lens defect detection device proposed by the present invention.

[0018] In the figure: 1, fixed seat; 2, rotating bracket; 201, main support tube; 3, cantilever fixed rod; 301, convex ridge; 4, guide rail washer; 5, suction cup mechanism; 501, bearing slide tube; 502, fixed pulley; 503, fixed top rod; 504, suction cup; 505, H-shaped support rod; 506, tightening spring; 507, pull rope; 508, electric control positioning pin; 509, synchronous faceplate; 510, anti-twist slide Groove; 511, limit stop rod; 6, trapezoidal spacer block; 7, arc beam; 8, reduction motor; 9, driving pulley; 10, conveyor belt; 11, soft scraper; 12, scraper holder; 121, convex slide groove; 13, sliding card strip; 14, lens body; 15, worm wheel; 16, anti-slip bearing; 17, worm; 18, driving motor; 19, motor fixing bracket; 20, roller frame; 21, stop wheel. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In this embodiment, refer to Figure 1-8, a defect detection device for an optical lens, comprising a fixed seat 1, an anti-slip bearing 16 is embedded in the middle of the fixed seat 1, and a rotating bracket 2 is rotatably connected in the anti-slip bearing 16, the rotating bracket 2 comprises a main support tube 201 rotatably connected in the anti-slip bearing 16, three radial cantilever fixing rods 3 are arranged at the top of the main support tube 201, each cantilever fixing rod 3 has a vertical circular hole at one end away from the main support tube 201, and a suction cup mechanism 5 is arranged at each circular hole, the suction cup mechanism 5 comprises a load-bearing slide tube 501 slidably inserted in the circular hole, and a plurality of H-shaped support rods 505 distributed symmetrically with respect to the center are fixed near the top of the circumferential outer wall of the load-bearing slide tube 501, the structure on each H-shaped support rod 505 is the same, and the top of the H-shaped support rod 505 The fixed top rod 503 is rotatably connected to the plate surface, and the top of the fixed top rod 503 is fixed with a suction cup 504 with a trumpet mouth facing upward; a spring baffle is reserved in the middle of the H-shaped support rod 505, and a tightening spring 506 is fixed between the spring baffle and the part below the center of the rotating shaft of the fixed top rod 503; a limit baffle 511 for assisting in limiting the fixed top rod 503 is fixed near the top of the H-shaped support rod 505; the curvature of the top opening of the multiple suction cups 504 is adapted to the curvature of the surface of the lens body 14; the circumferential outer wall of the bearing slide tube 501 is opened with a roller groove near the root of the H-shaped support rod 505, and a pull rope 507 is fixed to the bottom end of each fixed top rod 503, and multiple pull ropes 507 pass through the corresponding roller grooves and are fixed with the same synchronous disc 509; Specifically, by setting a suction cup mechanism 5 for adsorbing and fixing from the bottom of the lens body 14, during the inspection, the lens body 14 can be fixed by simply pressing it lightly on the surface of multiple suction cups 504, and when the lens body 14 needs to be taken out after the inspection, it is only necessary to control the synchronous flower disc 509 to move horizontally downward and pull all the pull ropes 507 at the same time. At that time, the suction cups 504 adsorbed on the surface of the lens body 14 can be skewed and leaked at the same time, that is, they can be separated from the adsorption, and then they can be taken away manually or by a robot.

[0021] Reference Figure 4 and Figure 8 The suction cup mechanism 5 also includes a fixed arm rod fixed to the inner wall of the load-bearing slide tube 501, and an electrically controlled positioning pin 508 with an extension rod pointing downward is fixed in the middle of the fixed arm rod, and the end of the extension rod of the electrically controlled positioning pin 508 is fixed to the middle of the upper surface of the synchronous disc 509; by controlling the extension rod of the electrically controlled positioning pin 508 to extend, three pull ropes 507 can be pulled at the same time to pull the bottom ends of the corresponding fixed top rods 503, thereby achieving the simultaneous falling off of multiple suction cups 504.

[0022] Reference Figure 4 A fixed pulley 502 with a groove is provided in the roller groove, and the corresponding pull rope 507 is wound in the groove of the fixed pulley 502; by arranging the fixed pulley 502 at the corner, the wear on the pull rope 507 can be reduced.

[0023] Reference Figure 4 Two symmetrical roller frames 20 are fixed to the inner wall of the bottom end of the load-bearing slide tube 501, and the same wheel 21 is arranged between the two roller frames 20, and the wheel 21 protrudes out of the plane where the bottom end of the load-bearing slide tube 501 is located; the upper surface of the fixed seat 1 is fixed with a guide rail washer 4 that is adapted to the center position of the wheel 21, and the wheel 21 carries the suction cup mechanism 5 and can rotate on the guide rail washer 4; a trapezoidal pad 6 is fixed to the upper surface of the guide rail washer 4 near the right side, that is, the detection station; and a positioning notch is reserved in the middle of the upper surface of the trapezoidal pad 6; through the set trapezoidal pad 6, when the suction cup mechanism 5 clamps the lens body 14 and moves to the middle of the detection station, it can be automatically lifted and fixed by the positioning notch, which is conducive to reaching the detection position accurately and quickly.

[0024] Reference Figure 6-Figure 8 The inner wall of the circular hole at the end of the cantilever fixing rod 3 is reserved with a vertical ridge 301, and the circumferential outer wall of the supporting sliding tube 501 is reserved with an anti-twist groove 510 that is engaged with the ridge 301 and forms a sliding fit; through such an arrangement, the entire suction cup mechanism 5 can be prevented from rotating when sliding up and down.

[0025] Reference Figure 4-Figure 5 The main support tube 201 is vertically fixed in the middle of the anti-slip bearing 16, and a worm gear 15 is sleeved and fixed on the outer circumferential wall of the bottom end of the main support tube 201; a motor fixing frame 19 is fixed to the edge of the worm gear 15 on the lower surface of the fixed seat 1, and a driving motor 18 is fixed to the lower surface of the motor fixing frame 19, and a worm 17 meshing with the worm gear 15 is fixed to the top of the output shaft of the driving motor 18; by setting the worm 17 to drive the rotating bracket 2 to rotate, when the lens body 14 to be inspected arrives at the inspection station, as long as the driving motor 18 stops rotating, the operation above the fixed seat 1 will not affect the weak rotation of the overall rotating bracket 2, and a certain reverse self-locking effect is achieved.

[0026] Reference Figure 4 A fixing ring is fixed to the top of the main support tube 201, and a wire passing hole is opened on the circumferential outer wall of the fixing ring near the middle of each cantilever fixing rod 3, and an electric slip ring is arranged on the circumferential inner wall of the main support tube 201 near the bottom, and the electric control positioning pin 508 is connected to the power supply through the corresponding electric slip ring.

[0027] In the present invention, two positioning screws are fixed to one end of the suction cup 504 away from the opening, and a through hole for fixing the two positioning screws is provided at the top of the fixed top rod 503. The two positioning screws can change the elevation angle of the suction cup 504, thereby adsorbing and fixing the lens body 14 with different curvatures.

[0028] Reference Figure 1 and Figure 3 The upper surface of the fixed seat 1 is fixed with beams at the two corners at the right end, and the same arc-shaped crossbeam 7 with a "mountain"-shaped structure is fixed between the tops of the two beams. Two symmetrical tapered roller bearings are embedded in the middle position of the arc top of the arc-shaped crossbeam 7, and the two tapered roller bearings are located directly above the trapezoidal pad block 6, and a transmission rod is rotatably connected in the two tapered roller bearings, and the upper and lower ends of the transmission rod are respectively fixed with a driven pulley and a scraper holder 12; a soft scraper 11 is clamped on the lower surface of the scraper holder 12, and the curvature of the lower surface shape of the soft scraper 11 is adapted to the curvature of the upper surface shape of the lens body 14 of this batch; and the soft The inside of the scraper 11 is adsorbed with dark ink; a counterweight beam extending outward is fixed to the arc bottom of the arc-shaped crossbeam 7, and a reduction motor 8 is fixed to the end of the counterweight beam, and a driving pulley 9 is fixed to the top of the output shaft of the reduction motor 8; a same conveyor belt 10 is wound between the circumferential outer walls of the driving pulley 9 and the driven pulley; by setting a soft scraper 11 with dark ink and cooperating with a trapezoidal pad 6 with a lifting function, when the clamped lens body 14 is rotated to the bottom of the soft scraper 11, its surface can be quickly rotated and painted a circle, and if there are microcracks on its surface, the dark ink will be adsorbed, which can not only be quickly identified but also marked.

[0029] Reference Figure 4 and Figure 6 A convex groove 121 is formed at one end of the scraper holder 12 away from the transmission rod, and a sliding card strip 13 is slidably inserted in the convex groove 121. A plurality of fixed connecting rods are fixed on the lower surface of the sliding card strip 13, and the top end of the soft scraper 11 is fixed to the bottom end of the fixed connecting rod; it is convenient to pull out the soft scraper 11 for cleaning and ink replenishment.

[0030] When the device is in use, the lens body 14 to be tested is first placed on the three suction cups 504 of the suction cup mechanism 5 far away from the testing station. When placing it, it is placed horizontally and gently pressed until the lens body 14 is sucked; then the driving motor 18 at the bottom of the fixing seat 1 is started to drive the rotating bracket 2 to rotate the central angle of one station; at this time, the lens body 14 to be tested is rotated to the testing position with the clamp, and at this time, under the action of the trapezoidal pad 6, it is forced to rise as a whole together with the suction cup mechanism 5 until the upper surface of the lens body 14 is tightly against the bottom of the soft scraper 11 stained with dark ink; at this time, the reduction motor 8 is started again to drive the soft scraper 11 to rotate so as to quickly rotate and brush the upper surface of the lens body 14 for a circle. If there are microcracks on its surface, the dark ink will be absorbed, which can not only be quickly identified but also marked.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A defect detection device for an optical lens, comprising a fixed seat (1), wherein an anti-slipping bearing (16) is embedded in the middle of the fixed seat (1), and a rotating bracket (2) is rotatably connected to the anti-slipping bearing (16), wherein the rotating bracket (2) comprises a main support tube (201) rotatably connected to the anti-slipping bearing (16), and three radial cantilever fixing rods (3) are arranged at the top of the main support tube (201), and each of the cantilever fixing rods (3) has a vertical circular hole at one end away from the main support tube (201), characterized in that: A suction cup mechanism (5) is provided at each of the circular holes, and the suction cup mechanism (5) comprises a load-bearing sliding tube (501) slidably inserted in the circular hole, and a plurality of H-shaped support rods (505) are fixed near the top of the circumferential outer wall of the load-bearing sliding tube (501) and are symmetrically distributed in the center, and the structure on each of the H-shaped support rods (505) is the same, and the top of the H-shaped support rod (505) is rotatably connected to a fixed top rod (503) vertical to the plate surface, and the top of the fixed top rod (503) is fixed with a suction cup (504) with a bell mouth facing upward; a spring baffle is reserved in the middle of each of the H-shaped support rods (505), and A pressing spring (506) is fixed between the spring baffle and the portion below the center of the rotating shaft of the fixed top rod (503); a limit baffle rod (511) is fixed near the top of the H-shaped support rod (505); the curvature of the top openings of the plurality of suction cups (504) matches the curvature of the surface of the lens body (14); a roller groove is formed on the circumferential outer wall of the bearing slide tube (501) near the root of the H-shaped support rod (505), a pull rope (507) is fixed to the bottom end of each of the fixed top rods (503), and the plurality of pull ropes (507) pass through the corresponding roller grooves and are fixed to the same synchronous faceplate (509).

2. The optical lens defect detection device according to claim 1, characterized in that: The suction cup mechanism (5) further comprises a fixed arm fixed to the inner wall of the bearing slide tube (501), and an electrically controlled positioning pin (508) with an extension rod pointing downward is fixed in the middle of the fixed arm, and the end of the extension rod of the electrically controlled positioning pin (508) is fixed to the middle of the upper surface of the synchronous faceplate (509).

3. The optical lens defect detection device according to claim 1, characterized in that: A fixed pulley (502) with a groove is arranged in each of the roller grooves, and a corresponding pull rope (507) is wound in the groove of the fixed pulley (502).

4. The optical lens defect detection device according to claim 1, characterized in that: Two symmetrical roller frames (20) are fixed to the inner wall of the bottom end of the bearing slide tube (501), and a common stopper (21) is arranged between the two roller frames (20), and the stopper (21) protrudes from the plane where the bottom end of the bearing slide tube (501) is located; a guide rail washer (4) adapted to the center position of the stopper (21) is fixed to the upper surface of the fixed seat (1), and the stopper (21) carries the suction cup mechanism (5) and can rotate on the guide rail washer (4); a trapezoidal padding block (6) is fixed to the upper surface of the guide rail washer (4) near the right side, i.e., the detection station; and a positioning notch is reserved in the middle of the upper surface of the trapezoidal padding block (6).

5. The optical lens defect detection device according to claim 4, characterized in that: The inner wall of the circular hole at the end of the cantilever fixing rod (3) is reserved with a vertical ridge (301), and the outer wall of the circumference of the bearing slide tube (501) is reserved with an anti-twist sliding groove (510) that engages with the ridge (301) and forms a sliding fit.

6. The optical lens defect detection device according to claim 5, characterized in that: The main support tube (201) is vertically fixed in the middle of the anti-slip bearing (16), and a worm wheel (15) is sleeved and fixed on the outer circumferential wall of the bottom end of the main support tube (201); a motor fixing frame (19) is fixed on the lower surface of the fixing seat (1) near the edge of the worm wheel (15), and a driving motor (18) is fixed on the lower surface of the motor fixing frame (19), and a worm (17) meshing with the worm wheel (15) is fixed on the top end of the output shaft of the driving motor (18).

7. The optical lens defect detection device according to claim 6, characterized in that: A fixing ring is fixed to the top of the main support tube (201), a wire-passing hole is provided on the circumferential outer wall of the fixing ring near the middle of each cantilever fixing rod (3), and an electric slip ring is provided on the circumferential inner wall of the main support tube (201) near the bottom, and the electric control positioning pin (508) is connected to the power supply via the corresponding electric slip ring.

8. The optical lens defect detection device according to claim 1, characterized in that: Two positioning screws are fixed to one end of the suction cup (504) away from the opening, and a through hole for fixing the two positioning screws is provided at the top end of the fixed top rod (503).

9. The optical lens defect detection device according to claim 4, characterized in that: The upper surface of the fixed seat (1) is located at two corners at the right end, and beams are fixed thereto, and a same arc-shaped crossbeam (7) in a "mountain" shape is fixed between the tops of the two beams. Two mutually symmetrical tapered roller bearings are embedded in the middle of the arc top of the arc-shaped crossbeam (7), and the two tapered roller bearings are located directly above the trapezoidal pad block (6). A transmission rod is rotatably connected between the two tapered roller bearings, and a driven pulley and a scraper holder (12) are respectively fixed at the upper and lower ends of the transmission rod; the scraper holder The lower surface of the lens body (12) is clamped with a soft scraper (11), and the curvature of the lower surface of the soft scraper (11) matches the curvature of the upper surface of the lens body (14); and dark ink is adsorbed inside the soft scraper (11); a counterweight beam extending outward is fixed at the bottom of the arc of the arc-shaped cross beam (7), and a reduction motor (8) is fixed at the end of the counterweight beam, and a driving pulley (9) is fixed at the top of the output shaft of the reduction motor (8); and a common conveyor belt (10) is wound between the circumferential outer walls of the driving pulley (9) and the driven pulley.

10. The optical lens defect detection device according to claim 9, characterized in that: A convex sliding groove (121) is formed at one end of the scraper holder (12) away from the transmission rod, and a sliding clamping strip (13) is slidably inserted in the convex sliding groove (121), a plurality of fixed connecting rods are fixed to the lower surface of the sliding clamping strip (13), and the top end of the soft scraper (11) is fixed to the bottom end of the fixed connecting rod.

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