A screening device for defective photovoltaic glass workpieces

Abstract

The present invention discloses a screening device for defective photovoltaic glass workpieces, including a first belt conveyor. Above the first belt conveyor, a mounting frame is fixedly installed. The mounting frame is concave and consists of two side plates and a cross plate. A first guiding hole is formed in the cross plate, and a cleaning assembly is slidably installed in the first guiding hole. The cleaning assembly includes two sets of rotating rings, and an annular brush is fixedly installed at the bottom of the rotating ring. A driving assembly and a dust suction assembly are arranged on the mounting frame. The annular brush rotates and moves back and forth while adhering to the photovoltaic glass to clean the dust on the photovoltaic glass. The air inside the dust storage box is sucked into the second piston chamber, and thus the suction pipe sucks the dust swept and dropped by the annular brush into the interior of the dust storage box, thereby achieving the purpose of cleaning the stains on the photovoltaic glass and ensuring the reliability of the image acquisition of the photovoltaic glass.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic glass screening, and specifically relates to a screening device for defective photovoltaic glass workpieces. Background Technique

[0002] The main components of a photovoltaic panel are: photovoltaic glass, solar cells, backplane, aluminum alloy frame, and junction box. Among them, the photovoltaic glass, as the protective layer of the panel, has a high light transmittance, ensuring that the solar cells can absorb sunlight to the maximum extent. However, during the processing of photovoltaic glass, appearance defects such as cracks, hidden cracks, bubbles, and dirt may occur, affecting the light transmittance of the photovoltaic glass. Therefore, after the processing of photovoltaic glass is completed, defective products need to be screened out. The conventional screening method mainly relies on manual visual inspection.

[0003] When screening defective photovoltaic glass by the naked eye, the efficiency is relatively low. To improve the screening efficiency, CCD industrial cameras are still installed on the production line of photovoltaic glass to collect images of the photovoltaic glass, and then analyze the characteristics of the collected images to determine whether the photovoltaic glass is a defective product. However, after the processing of photovoltaic glass is completed, dust and other stains will adhere to it. When the CCD industrial camera collects images, the stains will affect the image collection effect and the reliability of screening defective products, so further improvement can be made. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a screening device for defective photovoltaic glass workpieces, which has the advantages of automatically cleaning stains on the photovoltaic glass and correcting the position of the photovoltaic glass, and solves the problem that the stains on the photovoltaic glass will affect the image collection effect.

[0005] To achieve the above-mentioned purpose of automatically cleaning stains on the photovoltaic glass and correcting the position of the photovoltaic glass, the present invention provides the following technical solution: A screening device for defective photovoltaic glass workpieces, including a first belt conveyor, above which an installation frame is fixedly installed. The installation frame is concave and consists of two side plates and a cross plate. A first guiding hole is opened on the cross plate, and a cleaning component is slidably installed in the first guiding hole;

[0006] The cleaning component includes two groups of rotating rings, and a circular brush is fixedly installed at the bottom of the rotating ring;

[0007] A driving component and a dust suction component are arranged on the installation frame;

[0008] The front and rear sides of the cleaning assembly are movably connected with transmission assemblies. The bottoms of the transmission assemblies are movably connected with clamping assemblies. Both groups of clamping assemblies are attached to the upper end of the first belt conveyor. An image acquisition part is arranged on the upper side of the right end of the first belt conveyor. A conveying assembly is arranged on the right side of the first belt conveyor.

[0009] Preferably, the mounting frame is installed on the first belt conveyor through four legs. The first guiding hole is arranged along the length direction of the cross plate. Corresponding guiding holes two are opened on the two side plates.

[0010] Preferably, the cleaning assembly includes a sliding seat slidably connected in the first guiding hole. Two belt pulleys one are installed at the bottom of the sliding seat. The two belt pulleys one are distributed front and back. Belt pulleys two are installed at the four corners of the bottom of the cross plate. A transmission belt is sleeved outside the four belt pulleys two. The front and rear belt bodies of the transmission belt are bent towards the middle and are attached to the opposite sides of the two belt pulleys one. A suction pipe is arranged through the center of the belt pulley one. Convex strips are arranged in an array on the outer wall of the suction pipe. A slot adapted to the suction pipe is opened at the center of the belt pulley one. And linear slots are arranged in an array at the inner wall of the slot where the belt pulley one is located. The convex strips are slidably matched with the linear slots. A rotating ring is fixedly installed at the bottom of the suction pipe. The tops of the two suction pipes are rotatably connected with a dust storage box. The suction pipe is communicated with the dust storage box. Two blocking rings are fixedly installed on the top wall of the dust storage box. The inner wall of the blocking ring is conical. The blocking ring is located directly above the suction pipe.

[0011] Preferably, the driving assembly includes four support rods fixedly installed on the top of the sliding seat. A top plate is fixedly installed at the top of the support rods. A cylinder one is fixedly installed on the top of the top plate. The output end of the cylinder one penetrates through the top plate. The output end of the cylinder one is fixedly installed on the top of the dust storage box. A bevel gear one is fixedly installed on the top of the left front belt pulley two along the central axis. A motor is fixedly installed at the center of the top of the bevel gear one. The bevel gear one meshes with a bevel gear two. A threaded rod is fixedly installed at the center of the bevel gear two. Two threaded grooves are opened on the threaded rod. And the ends of the two threaded grooves are communicated. A threaded collar matched with the threaded rod is fixedly installed on the top of the sliding seat.

[0012] Preferably, the dust suction assembly includes a sleeve fixedly installed on the top of the horizontal plate. A rotating shaft is arranged along the central axis of the sleeve. A second sprocket is fixedly installed at the front end of the rotating shaft. A first sprocket is fixedly installed on the threaded rod. The first sprocket and the second sprocket are connected by a chain belt. An inclined turntable is fixedly installed in the middle of the rotating shaft. Two groups of partition plates are fixedly installed on the inner wall of the sleeve and are distributed front and back. The two groups of partition plates are respectively located on both sides of the inclined turntable. An exhaust groove is formed in the sleeve, and the exhaust groove is located between the two groups of partition plates. A piston rod is slidably connected to the partition plate. The opposite ends of the two piston rods are respectively attached to both sides of the inclined turntable. The other end of the piston rod is fixedly installed with a piston plate. The piston plate is sleeved outside the rotating shaft and is slidably connected in the sleeve. A first spring is sleeved outside the piston rod. The first spring is located between the inclined turntable and the partition plate. One end of the first spring is fixedly installed on the partition plate, and the other end of the first spring is fixedly installed with a gasket. The gasket is fixedly installed on the piston rod. The two piston plates divide the sleeve into three cavities. The middle cavity is the first piston cavity, and the cavities at both ends are the second piston cavities. The exhaust groove is communicated with the first piston cavity. One-way valves are fixedly installed at both ends of the sleeve, and the one-way valves are communicated with the second piston cavity. Connection pipes are arranged between the two second piston cavities and the dust storage box.

[0013] Preferably, the connection pipe includes two groups of air guide pipes fixedly installed at both ends of the sleeve. The air guide pipes are communicated with the second piston cavity. A cross pipe is connected between the other ends of the two groups of air guide pipes. A fixed pipe is arranged in the middle of the cross pipe. The other end of the fixed pipe is connected to the side of the dust storage box. The cross section of the fixed pipe is in a "convex" shape. Filter cotton is filled in the larger inner diameter end of the fixed pipe. A second one-way valve is arranged on the air guide pipe.

[0014] Preferably, the transmission assembly includes two groups of insertion plates respectively fixedly installed on both sides of the dust storage box. The other end of the insertion plate is sleeved with a first square sleeve. A slider is fixedly installed at the other end of the first square sleeve. The slider is slidably connected to the second guide hole. A second square sleeve is sleeved outside the first square sleeve. A lug is fixedly installed at the top of the second square sleeve away from the slider. A sliding rod is slidably connected to the lug. The end of the sliding rod close to the dust storage box is fixedly installed on the top of the insertion plate. A second spring is sleeved outside the sliding rod. One end of the second spring is fixedly installed on the lug, and the other end of the second spring is fixedly installed on the end of the sliding rod close to the dust storage box. A push rod is hinged to the slider. The other end of the push rod is hinged to a V-shaped rotating arm. The middle of the V-shaped rotating arm is rotatably connected to the side of the side plate through a rotating pin.

[0015] Preferably, the clamping assembly includes two groups of L-shaped clamping plates attached to the upper end of the first belt conveyor. Two guide rods are arranged through the vertical parts of each group of L-shaped clamping plates. The guide rods are fixedly installed on the legs. A third spring is sleeved outside the guide rods, and the two ends of the third spring are respectively fixedly installed between the legs and the vertical parts of the L-shaped clamping plates. Two guide frames are fixedly installed at the top of the L-shaped clamping plates. The bottom end of the V-shaped rotating arm is rotatably connected with a sliding column, and the two ends of the sliding column are respectively slidably connected in the two guide frames.

[0016] Preferably, the image acquisition component includes an arch frame fixedly installed on the upper side of the right half of the first belt conveyor, and a camera is arranged in the middle of the arch frame. The conveying component is the second belt conveyor on the right side of the first belt conveyor. Cylinders II are fixedly installed on the front and rear sides of the right end of the first belt conveyor, and the output ends of the cylinders II are fixedly installed on the side surface of the second belt conveyor.

[0017] Compared with the prior art, the present invention provides a defective photovoltaic glass workpiece screening device, which has the following beneficial effects:

[0018] 1. For this defective photovoltaic glass workpiece screening device, the annular brush rotates and moves back and forth while adhering to the upper side of the photovoltaic glass to clean the dust on the photovoltaic glass; the air inside the dust storage box is sucked into the second piston chamber; then, the dust storage box is communicated with the suction pipe, so that the suction pipe sucks the dust swept and dropped by the annular brush into the interior of the dust storage box; thus, the purpose of cleaning the stains on the photovoltaic glass is achieved, ensuring the reliability of the image acquisition of the photovoltaic glass.

[0019] 2. For this defective photovoltaic glass workpiece screening device, during the downward movement of the dust storage box, the assembly of the plug board, the first square sleeve and the second square sleeve moves downward synchronously; the slider moves downward following the first square sleeve and pushes the V-shaped rotating arm to deflect clockwise through the push rod, so that the sliding column pushes the L-shaped clamping plate to move towards the middle of the first belt conveyor, and the two groups of L-shaped clamping plates clamp the front and rear ends of the photovoltaic glass; thus, the purpose of preventing the photovoltaic glass from moving during the cleaning of the photovoltaic glass by the annular brush is achieved; at the same time, the position of the photovoltaic glass is corrected by the two groups of L-shaped clamping plates to prevent the photovoltaic glass from shifting on the top of the first belt conveyor, ensuring that the photovoltaic glass remains in the middle of the first belt conveyor in the acquired image, which is convenient for subsequent analysis of the image features of the photovoltaic glass.

[0020] 3. After the cleaning of the defective photovoltaic glass workpiece is completed, the output end of the first cylinder contracts to separate the annular brush from the photovoltaic glass. The cleaned photovoltaic glass continues to move to the right along the first belt conveyor. The camera takes pictures of the photovoltaic glass and sends the collected images to the computer. The computer analyzes the image features to determine whether the photovoltaic glass is defective. The output end of the second cylinder extends to increase the distance between the first belt conveyor and the second belt conveyor, so that the defective photovoltaic glass can fall through the gap between the first belt conveyor and the second belt conveyor. The output end of the second cylinder contracts to make the second belt conveyor fit against the right end of the first belt conveyor, so that the qualified photovoltaic glass can be transferred from the first belt conveyor to the second belt conveyor and continue to be conveyed by the second belt conveyor. Thus, the purpose of separately conveying the qualified and defective photovoltaic glass is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 6 is a schematic perspective view of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0022] Figure 2 FIG. 7 is a schematic perspective view of the image acquisition component and the conveying component of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0023] Figure 3 FIG. 8 is a schematic perspective view of a defective photovoltaic glass workpiece screening device proposed by the present invention after removing the image acquisition component and the conveying component;

[0024] Figure 4 FIG. 9 is a schematic bottom view of the sliding seat of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0025] Figure 5 FIG. 10 is a schematic perspective sectional view of the cleaning component of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0026] Figure 6 FIG. 11 is a schematic perspective assembly structure diagram of the cleaning component and the driving component of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0027] Figure 7 FIG. 12 is a schematic perspective assembly structure diagram of the threaded rod of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0028] Figure 8 FIG. 13 is a schematic perspective view of the dust suction component of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0029] Figure 9 FIG. 14 is a schematic perspective sectional view of the sleeve in the dust suction component of a defective photovoltaic glass workpiece screening device proposed by the present invention;

[0030] Figure 10 Schematic diagram of the three-dimensional assembled structure of the transmission component and the clamping component of a screening device for defective photovoltaic glass workpieces proposed by the present invention;

[0031] Figure 11 Schematic diagram of the three-dimensional exploded structure of the transmission component and the clamping component of a screening device for defective photovoltaic glass workpieces proposed by the present invention.

[0032] In the figure: 100, the first belt conveyor; 200, the mounting frame; 300, the cleaning component; 400, the driving component; 500, the dust suction component; 600, the transmission component; 700, the clamping component; 800, the image acquisition part; 900, the conveying component;

[0033] 201, the leg; 202, the cross plate; 203, the side plate; 204, the first guiding hole; 205, the second guiding hole;

[0034] 301, the sliding seat; 302, the first pulley; 303, the second pulley; 304, the transmission belt; 305, the suction pipe; 306, the convex strip; 307, the rotating ring; 308, the annular brush; 309, the dust storage box; 310, the blocking ring;

[0035] 401, the support rod; 402, the top plate; 403, the first cylinder; 404, the first bevel gear; 405, the motor; 406, the second bevel gear; 407, the threaded rod; 408, the threaded sleeve ring;

[0036] 501, the first sprocket; 502, the second sprocket; 503, the chain belt; 504, the rotating shaft; 505, the sleeve; 506, the inclined turntable; 507, the partition; 508, the exhaust groove; 509, the piston rod; 510, the first spring; 511, the piston plate; 512, the first one-way valve; 513, the air duct; 514, the second one-way valve; 515, the horizontal pipe; 516, the fixed pipe;

[0037] 601, the insertion plate; 602, the first square sleeve; 603, the slider; 604, the second square sleeve; 605, the sliding rod; 606, the lug; 607, the second spring; 608, the push rod; 609, the V-shaped rotating arm;

[0038] 701, the guiding rod; 702, the L-shaped clamping plate; 703, the third spring; 704, the guiding frame; 705, the sliding column; 801, the arch frame; 802, the camera; 901, the second belt conveyor; 902, the second cylinder. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figures 1-2 , a screening device for defective photovoltaic glass workpieces, including a first belt conveyor 100. Above the first belt conveyor 100, a mounting frame 200 is fixedly installed. The mounting frame 200 is concave and is composed of two side plates 203 and a cross plate 202. A first guiding hole 204 is opened on the cross plate 202, and a cleaning assembly 300 is slidably connected in the first guiding hole 204;

[0041] The cleaning assembly 300 includes two sets of rotating rings 307, and an annular brush 308 is fixedly installed at the bottom of the rotating ring 307;

[0042] A driving assembly 400 and a dust suction assembly 500 are arranged on the mounting frame 200;

[0043] The front and rear sides of the cleaning assembly 300 are both movably connected with a transmission assembly 600. The bottom of the transmission assembly 600 is movably connected with a clamping assembly 700. Both sets of clamping assemblies 700 are attached to the upper end of the first belt conveyor 100. An image acquisition member 800 is arranged on the upper side of the right end of the first belt conveyor 100, and a conveying assembly 900 is arranged on the right side of the first belt conveyor 100.

[0044] Please refer to Figure 3 , the mounting frame 200 is installed on the first belt conveyor 100 through four legs 201. The first guiding hole 204 is arranged along the length direction of the cross plate 202, and corresponding second guiding holes 205 are opened on the two side plates 203.

[0045] Please refer to Figures 4-5 , the cleaning assembly 300 includes a sliding seat 301 slidably connected in the first guiding hole 204. Two sets of first belt pulleys 302 are installed at the bottom of the sliding seat 301. The two sets of first belt pulleys 302 are distributed front and back. Four corners at the bottom of the cross plate 202 are all installed with second belt pulleys 303, and a connecting shaft is arranged in the middle of the second belt pulley 303. The connecting shaft is rotatably connected to the cross plate 202.

[0046] A transmission belt 304 is sleeved outside the four sets of second belt pulleys 303. The transmission belt 304 is annular, and the transmission belt 304 plays a role in transmission, enabling the four sets of second belt pulleys 303 to rotate synchronously. As Figure 4As shown in the figure, the front and rear belt bodies of the transmission belt 304 are bent towards the middle and are attached to the opposite sides of the two sets of belt pulleys one 302; thus, the four sets of belt pulleys two 303 and the two sets of belt pulleys one 302 rotate synchronously, and the belt pulley two 303 and the belt pulley one 302 rotate along Figure 4 the direction of the arrow in

[0047] Please refer to Figures 4-5 . A suction pipe 305 is penetrated and arranged at the center of the belt pulley one 302. The outer wall of the suction pipe 305 is provided with convex strips 306 in an array. A slot adapted to the suction pipe 305 is opened at the center of the belt pulley one 302. And linear slots are opened in an array at the inner wall of the slot of the belt pulley one 302. The convex strips 306 are slidably adapted to the linear slots, so that the suction pipe 305 rotates synchronously with the belt pulley one 302, and the suction pipe 305 can move up and down relative to the belt pulley one 302 during the rotation process.

[0048] A swivel ring 307 is fixedly installed at the bottom of the suction pipe 305, and the suction pipe 305 is communicated with the middle part of the annular brush 308; thus, when the suction pipe 305 moves downward, the assembly of the swivel ring 307 and the annular brush 308 can move downward and be attached to the photovoltaic glass on the top of the belt conveyor one 100.

[0049] The tops of the two sets of suction pipes 305 are rotatably connected with a dust storage box 309. The suction pipe 305 is communicated with the dust storage box 309. Two sets of blocking rings 310 are fixedly installed on the top wall of the dust storage box 309. The inner wall of the blocking ring 310 is conical, and the blocking ring 310 is located directly above the suction pipe 305. The top opening of the suction pipe 305 is blocked by the blocking ring 310 to prevent the dust inside the dust storage box 309 from falling downward through the suction pipe 305 again.

[0050] Please refer to Figures 6-7 . The driving assembly 400 includes four sets of support rods 401 fixedly installed on the top of the slide 301. The top of the support rod 401 is fixedly installed with a top plate 402. A cylinder one 403 is fixedly installed on the top of the top plate 402. The output end of the cylinder one 403 penetrates through the top plate 402, and the output end of the cylinder one 403 is fixedly installed on the top of the dust storage box 309; thus, by the telescopic movement of the output end of the cylinder one 403, the dust storage box 309 is driven to move up and down, and the assembly of the swivel ring 307 and the annular brush 308 is driven to move up and down.

[0051] At the top center of the pulley two 303 on the left front side, a bevel gear one 404 is fixedly installed. The bevel gear one 404 is fixedly installed on the connecting shaft of the pulley two 303. At the top center of the bevel gear one 404, a motor 405 is fixedly installed. The bevel gear one 404 meshes with a bevel gear two 406. At the center of the bevel gear two 406, a threaded rod 407 is fixedly installed. Two sets of threaded grooves are provided on the threaded rod 407, and the ends of the two sets of threaded grooves communicate. A threaded collar 408 is fixedly installed at the top of the sliding seat 301, and the threaded collar 408 is threadedly connected to the threaded rod 407.

[0052] Thus, the motor 405 drives the bevel gear one 404 to rotate, and drives one of the pulleys two 303 to rotate. Under the driving action of the transmission belt 304, the two pulleys one 302 and the other three pulleys two 303 rotate synchronously, and the suction pipe 305 is driven to rotate by the two pulleys one 302; when the bevel gear one 404 rotates, it drives the assembly of the bevel gear two 406 and the threaded rod 407 to rotate. With the threaded connection between the threaded collar 408 and the threaded rod 407, the sliding seat 301 is driven to reciprocate back and forth along the guide hole one 204. The assembly of the rotating ring 307 and the annular brush 308 rotates and moves back and forth. By extending the output end of the cylinder one 403, the annular brush 308 is attached to the photovoltaic glass, and the annular brush 308 cleans the stains on the photovoltaic glass.

[0053] Please refer to Figures 8-9 , the dust suction assembly 500 includes a sleeve 505 fixedly installed on the top of the fixed horizontal plate 202. A rotating shaft 504 is arranged along the central axis of the sleeve 505. At the front end of the rotating shaft 504, a sprocket two 502 is fixedly installed. A sprocket one 501 is fixedly installed on the threaded rod 407. The sprocket one 501 and the sprocket two 502 are connected by a chain belt 503. Thus, when the threaded rod 407 rotates, it drives the sprocket one 501 to rotate. With the driving action of the chain belt 503, the sprocket two 502 and the rotating shaft 504 are driven to rotate.

[0054] An inclined turntable 506 is fixedly installed in the middle of the rotating shaft 504. The inclined turntable 506 is inclined and fits on the inner wall of the sleeve 505. Two sets of partition plates 507 are fixedly installed on the inner wall of the sleeve 505 and are distributed front and back. The two sets of partition plates 507 are respectively located on both sides of the inclined turntable 506. An exhaust groove 508 is provided on the sleeve 505, and the exhaust groove 508 is located between the two sets of partition plates 507.

[0055] A piston rod 509 is slidably connected to the partition plate 507. The central axes of the two piston rods 509 coincide. The opposite ends of the two piston rods 509 are respectively attached to both sides of the inclined turntable 506. The other end of the piston rod 509 is fixedly installed with a piston plate 511. The piston plate 511 is sleeved outside the rotating shaft 504 and is slidably connected in the sleeve 505. A first spring 510 is sleeved outside the piston rod 509. The first spring 510 is located between the inclined turntable 506 and the partition plate 507. One end of the first spring 510 is fixedly installed on the partition plate 507, and the other end of the first spring 510 is fixedly installed with a gasket, and the gasket is fixedly installed on the piston rod 509. Thus, when the inclined turntable 506 rotates, the piston rod 509 is intermittently pushed to the side, and under the elastic action of the first spring 510, the piston rod 509 can be reset. Moreover, the movement strokes of the two piston rods 509 are opposite.

[0056] The two piston plates 511 divide the sleeve 505 into three cavities. The middle cavity is the first piston cavity, and the cavities at both ends are the second piston cavities. The exhaust groove 508 is communicated with the first piston cavity. The diameter of the through hole in the center of the partition plate 507 can be slightly larger than the diameter of the rotating shaft 504; or the diameter of the mounting hole on the partition plate 507 for installing the piston rod 509 is slightly larger than the diameter of the piston rod 509; so that the air between the partition plate 507 and the piston plate 511 can pass through the partition plate 507 and be discharged from the exhaust groove 508. Thus, when the piston plate 511 moves towards the middle of the sleeve 505, the air between the partition plate 507 and the piston plate 511 is squeezed, and the air can be discharged from the exhaust groove 508. When the piston plate 511 moves towards the end face of the sleeve 505, external air enters the first piston cavity from the exhaust groove 508 and then enters the space between the partition plate 507 and the piston plate 511.

[0057] One-way valves 512 are fixedly installed at both ends of the sleeve 505. The one-way valves 512 are communicated with the second piston cavities and are used to discharge the air in the second piston cavities. When the piston plate 511 moves towards the end face of the sleeve 505, increasing the internal air pressure in the second piston cavities, the air can be discharged through the one-way valves 512. Connecting pipes are provided between the two second piston cavities and the dust storage box 309 for sucking the air inside the dust storage box 309. When the piston plate 511 moves towards the middle of the sleeve 505, the air pressure in the second piston cavities decreases, and air is sucked from the dust storage box 309 through the connecting pipes.

[0058] The connecting pipe includes two groups of air guide pipes 513 fixedly installed at both ends of the sleeve 505. The air guide pipes 513 communicate with the second piston chamber. A cross pipe 515 is connected between the other ends of the two groups of air guide pipes 513. A fixed pipe 516 is arranged in the middle of the cross pipe 515. The other end of the fixed pipe 516 is connected to the side of the dust storage box 309. The cross-section of the fixed pipe 516 is in the shape of a "convex". The larger inner diameter end of the fixed pipe 516 is filled with filter cotton to prevent dust from passing through the air guide pipe 513 and entering the piston chamber. A check valve II 514 is arranged on the air guide pipe 513. The check valve II 514 is used for the air inside the air guide pipe 513 to enter the second piston chamber and prevent the air inside the air guide pipe 513 from flowing back into the second piston chamber.

[0059] Please refer to Figures 10-11 As shown in the figure, the transmission assembly 600 includes two groups of plug boards 601 respectively and fixedly installed on both sides of the dust storage box 309. A square sleeve I 602 is sleeved on the outer side of the other end of the plug board 601. A slider 603 is fixedly installed at the other end of the square sleeve I 602. The slider 603 is slidably connected to the second guide hole 205. A square sleeve II 604 is sleeved on the outer side of the square sleeve I 602. A lug 606 is fixedly installed at the top of the end of the square sleeve II 604 far from the slider 603. A slide bar 605 is slidably connected to the lug 606. The end of the slide bar 605 close to the dust storage box 309 is fixedly installed on the top of the plug board 601. A second spring 607 is sleeved on the outer side of the slide bar 605. One end of the second spring 607 is fixedly installed on the lug 606, and the other end of the second spring 607 is fixedly installed on the end of the slide bar 605 close to the dust storage box 309. Thus, the plug board 601, the square sleeve I 602 and the square sleeve II 604 form a three-section telescopic structure. When the dust storage box 309 moves up and down, the assembly of the plug board 601, the square sleeve I 602 and the square sleeve II 604 moves up and down synchronously. During the forward and backward movement of the dust storage box 309, when the plug board 601 approaches the slider 603, the plug board 601 can be inserted into the square sleeve I 602, and the square sleeve II 604 is sleeved on the outer side of the square sleeve I 602; when the plug board 601 moves away from the slider 603, the plug board 601 will first be pulled out from the inside of the square sleeve I 602, and the whole square sleeve I 602 will be in the square sleeve II 604. When the plug board 601 continues to move, the square sleeve II 604 slides on the outer side of the square sleeve I 602.

[0060] A push rod 608 is hinged to the slider 603. The other end of the push rod 608 is hinged to a V-shaped rotating arm 609. The middle of the V-shaped rotating arm 609 is rotatably connected to the side of the side plate 203 through a rotating pin. During the up and down movement of the slider 603, the V-shaped rotating arm 609 is driven to deflect through the push rod 608.

[0061] Please refer to Figures 10-11, the clamping assembly 700 includes two groups of L-shaped clamping plates 702 attached to the upper end of the first belt conveyor 100. Two groups of guide rods 701 are vertically provided through each group of L-shaped clamping plates 702. The guide rods 701 are fixedly installed on the legs 201. A third spring 703 is sleeved outside the guide rods 701. The two ends of the third spring 703 are respectively fixedly installed between the legs 201 and the vertical parts of the L-shaped clamping plates 702. Two groups of guide frames 704 are fixedly installed at the top of the L-shaped clamping plates 702. The bottom end of the V-shaped rotating arm 609 is rotatably connected to a sliding column 705. The two ends of the sliding column 705 are respectively slidably connected within the two groups of guide frames 704. Thus, when the dust storage box 309 moves downward, the slider 603 moves downward synchronously. The push rod 608 pushes the V-shaped rotating arm 609 to deflect clockwise, and through the sliding column 705, the L-shaped clamping plates 702 are pushed towards the middle of the first belt conveyor 100, so that the two groups of L-shaped clamping plates 702 clamp the front and rear ends of the photovoltaic glass. When the annular brush 308 rotates and moves on the top of the photovoltaic glass, it can prevent the photovoltaic glass from moving due to the frictional effect. And through the clamping effect of the two groups of L-shaped clamping plates 702 on the photovoltaic glass, the position of the photovoltaic glass is corrected to prevent the photovoltaic glass from shifting on the top of the first belt conveyor 100. This ensures the imaging acquisition effect of the subsequent imaging acquisition component 800 on the photovoltaic glass.

[0062] Please refer to Figures 1-2 , the imaging acquisition component 800 includes an arch frame 801 fixedly installed on the upper side of the right half of the first belt conveyor 100. A camera 802 is provided in the middle of the arch frame 801. The camera 802 is electrically connected to a computer. The camera 802 transmits the acquired photovoltaic glass image to the computer, and the computer analyzes the image features. The conveying assembly 900 is a second belt conveyor 901 arranged on the right side of the first belt conveyor 100. Cylinders 902 are fixedly installed on the front and rear sides of the right end of the first belt conveyor 100. The output ends of the cylinders 902 are fixedly installed on the side of the second belt conveyor 901. The cylinders 902 are electrically connected to the computer. After the computer analyzes the defective photovoltaic glass, it drives the output ends of the cylinders 902 to extend, so that the second belt conveyor 901 moves away from the first belt conveyor 100. Thus, when the defective photovoltaic glass moves to the right along with the first belt conveyor 100, it drops through the gap between the first belt conveyor 100 and the second belt conveyor 901. And by contracting the output ends of the cylinders 902, the second belt conveyor 901 is attached to the right side of the first belt conveyor 100. The qualified photovoltaic glass can be transferred from the first belt conveyor 100 to the top of the second belt conveyor 901, and the qualified photovoltaic glass is continuously conveyed by the second belt conveyor 901.

[0063] During use, place the photovoltaic glass to be screened on the top of the first belt conveyor 100, and make the photovoltaic glass move from left to right;

[0064] When the output end of the first cylinder 403 extends, it drives the dust storage box 309 and the suction pipe 305 to move downward, so that the annular brush 308 fits on the top of the photovoltaic glass; at the same time, the motor 405 drives the first bevel gear 404 to rotate, drives one of the second pulleys 303 to rotate, and with the transmission of the transmission belt 304, drives two groups of the first pulleys 302 and the other three groups of the second pulleys 303 to rotate synchronously. Then, through the first pulley 302, it drives the suction pipe 305 to rotate, thereby driving the assembly of the rotating ring 307 and the annular brush 308 to rotate, and the annular brush 308 sweeps on the photovoltaic glass;

[0065] During the rotation of the first bevel gear 404, it drives the assembly of the second bevel gear 406 and the threaded rod 407 to rotate. With the threaded connection between the threaded sleeve ring 408 and the threaded rod 407, it drives the sliding seat 301 to reciprocate back and forth along the first guiding hole 204, so that the annular brush 308 fits on the photovoltaic glass and moves back and forth while rotating, cleaning the dust on the photovoltaic glass;

[0066] Through the transmission of the first sprocket 501, the second sprocket 502 and the chain belt 503, the rotating shaft 504 rotates synchronously with the threaded rod 407, and the inclined turntable 506 rotates inside the sleeve 505. The inclined turntable 506 intermittently pushes the piston rod 509 outward, and through the elasticity of the first spring 510, the piston rod 509 can move toward the middle of the sleeve 505 for reset; when the piston plate 511 moves toward the middle of the sleeve 505, the inside of the second piston chamber is in negative pressure. Then, through the connection of the air guide pipe 513, the horizontal pipe 515 and the fixed pipe 516, the air inside the dust storage box 309 is sucked into the second piston chamber; and through the connection between the dust storage box 309 and the suction pipe 305, the suction pipe 305 sucks the dust swept and dropped by the annular brush 308 into the inside of the dust storage box 309;

[0067] During the downward movement of the dust storage box 309, the assembly of the insertion plate 601, the first square sleeve 602 and the second square sleeve 604 moves downward synchronously; the slider 603 moves downward with the first square sleeve 602, and through the push rod 608, it pushes the V-shaped rotating arm 609 to deflect clockwise. Thus, the sliding column 705 pushes the L-shaped clamping plate 702 toward the middle of the first belt conveyor 100, and the two groups of L-shaped clamping plates 702 clamp the front and rear ends of the photovoltaic glass;

[0068] After the cleaning of the photovoltaic glass is completed, the output end of the first cylinder 403 contracts, separating the annular brush 308 from the photovoltaic glass; the cleaned photovoltaic glass continues to move to the right with the first belt conveyor 100, and the camera 802 takes pictures of the photovoltaic glass and sends the collected images to the computer. The computer analyzes the image features to determine whether the photovoltaic glass is a defective part;

[0069] By extending the output end of the second cylinder 902, the distance between the first belt conveyor 100 and the second belt conveyor 901 is increased, so that the defective photovoltaic glass can fall through the gap between the first belt conveyor 100 and the second belt conveyor 901; by contracting the output end of the second cylinder 902, the second belt conveyor 901 is attached to the right end of the first belt conveyor 100, so that the qualified photovoltaic glass can be transferred from the first belt conveyor 100 to the second belt conveyor 901 and continue to be conveyed through the second belt conveyor 901.

[0070] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for screening defective photovoltaic glass workpieces, comprising a belt conveyor (100), characterized in that: A mounting frame (200) is fixedly installed above the belt conveyor (100); the mounting frame (200) is concave in shape and is composed of two side plates (203) and a transverse plate (202); a guide hole (204) is provided on the transverse plate (202); a cleaning assembly (300) is slidably installed in the guide hole (204); The cleaning assembly (300) comprises two sets of rotating rings (307), and an annular brush (308) is fixedly mounted on the bottom of the rotating ring (307); The mounting frame (200) is provided with a driving assembly (400) and a dust collecting assembly (500); The front and rear sides of the cleaning component (300) are both movably connected to a transmission component (600), the bottom of the transmission component (600) is movably connected to a clamping component (700), two groups of the clamping components (700) are both attached to the upper end of the belt conveyor (100), an image acquisition component (800) is arranged on the upper right side of the belt conveyor (100), and a conveying component (900) is arranged on the right side of the belt conveyor (100); The mounting frame (200) is mounted on the belt conveyor (100) via four groups of legs (201); the guide hole (204) is arranged along the length direction of the transverse plate (202); and the two side plates (203) are provided with corresponding guide holes (205); The cleaning assembly (300) comprises a slide seat (301) slidably connected in a guide hole (204), two groups of pulleys (302) are installed at the bottom of the slide seat (301), the two groups of pulleys (302) are distributed front and back, pulleys (303) are installed at the four corners of the bottom of the cross plate (202), and transmission belts (304) are sleeved on the outer sides of the four groups of pulleys (303), and the front and rear belt bodies of the transmission belts (304) are bent toward the middle and fit on the opposite side of the two groups of pulleys (302); A suction pipe (305) is provided through the center of the pulley 1 (302), and four groups of convex strips (306) are arranged in an array on the outer wall of the suction pipe (305). A slot matching the suction pipe (305) is provided at the center of the pulley 1 (302), and four groups of linear grooves are arranged in an array on the inner wall of the slot of the pulley 1 (302), and the convex strips (306) are matched and slidable with the linear grooves, and the rotating ring (307) is fixedly installed at the bottom of the suction pipe (305); The top ends of the two groups of suction pipes (305) are rotatably connected to a dust storage box (309), and the suction pipes (305) are in communication with the dust storage box (309).

2. The defective photovoltaic glass workpiece screening device according to claim 1, characterized in that: The driving assembly (400) comprises four groups of support rods (401) fixedly mounted on the top of the slide seat (301), a top plate (402) fixedly mounted on the top of the support rods (401), a cylinder 1 (403) fixedly mounted on the top of the top plate (402), an output end of the cylinder 1 (403) passes through the top plate (402), and the output end of the cylinder 1 (403) is fixedly mounted on the top of the dust storage box (309); A bevel gear 1 (404) is fixedly installed on the top of the left front side pulley 2 (303) along the central axis, a motor (405) is fixedly installed at the center of the top of the bevel gear 1 (404), the bevel gear 1 (404) is meshed with a bevel gear 2 (406), a threaded rod (407) is fixedly installed at the center of the bevel gear 2 (406), the threaded rod (407) is provided with two groups of thread grooves, and the ends of the two groups of thread grooves are connected; a threaded collar (408) matching the threaded rod (407) is fixedly installed on the top of the slide seat (301).

3. The defective photovoltaic glass workpiece screening device according to claim 1, characterized in that: The dust collecting assembly (500) comprises a sleeve (505) fixedly mounted on the top of the horizontal plate (202), a rotating shaft (504) is arranged along the central axis of the sleeve (505), a sprocket wheel 2 (502) is fixedly mounted on the front end of the rotating shaft (504), a sprocket wheel 1 (501) is fixedly mounted on the threaded rod (407), and the sprocket wheel 1 (501) and the sprocket wheel 2 (502) are connected via a chain belt (503); An inclined rotating disk (506) is fixedly installed in the middle of the rotating shaft (504); two groups of partition plates (507) distributed front and back are fixedly installed on the inner wall of the sleeve (505); the two groups of partition plates (507) are respectively located on both sides of the inclined rotating disk (506); an exhaust groove (508) is opened on the sleeve (505), and the exhaust groove (508) is located between the two groups of partition plates (507); The partition plate (507) is slidably connected with a piston rod (509), and opposite ends of the two groups of piston rods (509) are respectively attached to the two sides of the tilting turntable (506), and the other end of the piston rod (509) is fixedly installed with a piston plate (511), and the piston plate (511) is sleeved on the outside of the rotating shaft (504) and slidably connected in the sleeve (505). The two groups of piston plates (511) divide the sleeve (505) into three cavities, the middle cavity is piston cavity one, and the cavities at both ends are piston cavity two; A spring 1 (510) is sleeved on the outside of the piston rod (509), and the spring 1 (510) is located between the tilting turntable (506) and the partition (507). One end of the spring 1 (510) is fixedly mounted on the partition (507), and a gasket is fixedly mounted on the other end of the spring 1 (510), and the gasket is fixedly mounted on the piston rod (509); The exhaust groove (508) is connected to the piston chamber 1, and one-way valves (512) are fixedly installed at both ends of the sleeve (505). The one-way valves (512) are connected to the piston chamber 2, and connecting pipes are provided between the two piston chambers and the dust storage box (309).

4. The defective photovoltaic glass workpiece screening device according to claim 3, characterized in that: The connecting pipeline comprises two groups of air guide pipes (513) fixedly mounted on both ends of the sleeve (505); the air guide pipes (513) are in communication with the second piston chamber; a transverse pipe (515) is connected between the other ends of the two groups of air guide pipes (513); a fixed pipe (516) is arranged in the middle of the transverse pipe (515); the other end of the fixed pipe (516) is connected to the side of the dust storage box (309); the cross section of the fixed pipe (516) is in a "convex" shape; the end of the fixed pipe (516) with a larger inner diameter is filled with filter cotton; and a second one-way valve (514) is arranged on the air guide pipe (513).

5. The defective photovoltaic glass workpiece screening device according to claim 1, characterized in that: The transmission assembly (600) comprises two groups of plug plates (601) respectively fixedly mounted on both sides of the dust storage box (309); a square sleeve (602) is sleeved on the outer side of the other end of the plug plate (601); a slider (603) is fixedly mounted on the other end of the square sleeve (602); and the slider (603) is slidably connected to the guide hole (205); The square sleeve one (602) is sleeved with a square sleeve two (604) on the outside, and a lug (606) is fixedly installed on the top of one end of the square sleeve two (604) away from the slider (603), and a sliding rod (605) is slidably connected to the lug (606), and one end of the sliding rod (605) close to the dust storage box (309) is fixedly installed on the top of the plug board (601), and a spring two (607) is sleeved on the outside of the sliding rod (605), and one end of the spring two (607) is fixedly installed on the lug (606), and the other end of the spring two (607) is fixedly installed on the end of the sliding rod (605) close to the dust storage box (309); A push rod (608) is hinged on the slider (603), and a V-shaped rotating arm (609) is hinged on the other end of the push rod (608). The V-shaped rotating arm (609) is connected to the side plate (203) through a rotating pin.

6. The device for screening defective photovoltaic glass workpieces according to claim 5, characterized in that: The clamping assembly (700) comprises two groups of L-shaped clamping plates (702) attached to the upper end of the belt conveyor (100), and two groups of guide rods (701) are arranged through the vertical part of each group of L-shaped clamping plates (702), and the guide rods (701) are fixedly mounted on the supporting legs (201), and the outer side of the guide rods (701) is provided with a spring (703), and the two ends of the spring (703) are respectively fixedly mounted between the supporting legs (201) and the vertical part of the L-shaped clamping plates (702); Two groups of guide frames (704) are fixedly installed on the top of the L-shaped clamping plate (702), and a sliding column (705) is rotatably connected to the bottom end of the V-shaped rotating arm (609), and both ends of the sliding column (705) are respectively slidably connected in the two groups of guide frames (704).

7. The defective photovoltaic glass workpiece screening device according to claim 1, characterized in that: The image acquisition component (800) comprises an arch frame (801) fixedly mounted on the upper side of the right half of the belt conveyor (100), and a camera (802) is arranged in the middle of the arch frame (801); The conveying assembly (900) is arranged on the belt conveyor 2 (901) to the right of the belt conveyor 1 (100), and the cylinder 2 (902) is fixedly installed on the front and rear sides of the right end of the belt conveyor 1 (100), and the output end of the cylinder 2 (902) is fixedly installed on the side of the belt conveyor 2 (901).

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