CN210876352U - Automatic visual detection equipment for defects of light guide plate - Google Patents

Abstract

The utility model relates to a light guide plate detects technical field, in particular to light guide plate defect vision automatic check out test set, which comprises a worktable, the material loading workstation has set gradually on the board, detect the workstation and unloading workstation, be provided with conveyer on the material loading workstation, conveyer top spanes and is provided with material loading manipulator, the overall dimension that has set gradually on the detect the workstation detects the station, station is judged to visual detection station and algorithm, detect the workstation top and be fixed with braced frame, the last overall dimension detection device that is fixed with of braced frame, first visual detection device and second visual detection device, the overall dimension detects the station, station is judged with one side that station is provided with three station handling devices to visual detection station and algorithm, the symmetry is provided with two tectorial membrane devices on the unloading workstation. Compared with the prior art, the utility model discloses a light guide plate defect vision automatic check out test set and detection method can effectively replace artifical the detection, avoid the easy appearance false retrieval that artifical detected, the risk of lou examining.

Description

Automatic visual detection equipment for defects of light guide plate

[ technical field ] A method for producing a semiconductor device

The utility model relates to a light guide plate detects technical field, in particular to light guide plate defect vision automatic check out test set.

[ background of the invention ]

With the social development, the internet of things, smart homes and the coming 5G era, smart homes such as mobile phones, notebooks, displays, televisions and the like are not only used as tools for communication, work, life and entertainment of people, but also are an integral part of life of people; aiming at the field of the production industry of intelligent household screen light guide plates such as mobile phones, notebooks, displays, televisions and the like, the light guide plates are produced in batches by injection molding in a mold, the defect detection is realized by manual eye detection, the phenomena of false detection and missed detection are easily caused when workers use eyes for a long time, the defective light guide plates flow into production and customers, and adverse effects are brought to enterprises.

[ Utility model ] content

In order to overcome the above problems, the utility model provides a light guide plate defect vision automatic check out test set that can effectively solve above-mentioned problem.

The utility model provides a technical scheme who above-mentioned technical problem provided is: the utility model provides a light guide plate defect vision automatic check out test set, includes the board, material loading workstation, detection achievement platform and unloading workstation have set gradually on the board, be provided with conveyer on the material loading workstation, conveyer top spanes and is provided with material loading manipulator, the last overall dimension that sets gradually of detection achievement platform detects station, visual detection station and algorithm and judges the station, and the detection achievement bench side is fixed with braced frame, the last overall dimension detection device, first visual detection device and the second visual detection device of being fixed with of braced frame, the overall dimension detection device is located the overall dimension and detects the station directly over, and first visual detection device and second visual detection device are located the visual detection station directly over, be provided with the burnishing device in the visual detection station for polish to the product detection that awaits measuring, the overall dimension detection station, Visual detection station and algorithm judge that same one side of station is provided with three station handling device, the symmetry is provided with two tectorial membrane devices on the unloading workstation, and two tectorial membrane device one side are provided with unloading manipulator, inside control system and the detecting system of being provided with of board, conveyer, material loading manipulator, overall dimension detection device, first visual detection device, second visual detection device, polishing device, three station handling device, tectorial membrane device, unloading manipulator are connected with the control system electricity respectively, and overall dimension detection device, first visual detection device, second visual detection device are connected with the detecting system electricity respectively.

Preferably, the conveyer includes two material loading curb plates, and two material loading curb plates are fixed in the material loading workstation, set up flexible conveyer belt between two material loading curb plates, and flexible conveyer belt one side sets up buncher, and buncher drives flexible conveyer belt transmission.

Preferably, the transportation device comprises a linear guide rail, the linear guide rail spans and is fixed between the two feeding side plates, a sliding block is arranged on the linear guide rail in a sliding mode, an adjustable air cylinder is arranged on one side of the sliding block, and the adjustable air cylinder drives the sliding block to slide along the linear guide rail.

Preferably, the slider is fixed with the slip table cylinder along flexible conveyer belt direction, and slip table cylinder bottom is fixed with the locating lever along flexible conveyer belt direction, the one end of flexible conveyer belt sets up the striker plate.

Preferably, material loading manipulator includes the manipulator frame, and the manipulator frame spanes and is fixed in the conveyer top, and the fixed X axle sharp module in manipulator frame top, X axle sharp module one side is provided with first servo motor, sets up the sharp module of Y axle perpendicularly on the sharp module 2202 of X axle, and Y axle sharp module one side is provided with the second servo motor.

Preferably, Y axle sharp module below sets up 90 revolving cylinder, and 90 revolving cylinder below sets up manipulator slip table cylinder, the fixed vacuum chuck in manipulator slip table cylinder below.

Preferably, the second visual inspection device comprises a lifting fine adjustment fixing bottom plate, a lifting fine adjustment screw rod, a lifting fine adjustment handle, a lifting slider fixing plate, a camera Y-direction fine adjustment fixing seat, a camera Y-direction fine adjustment guide rail, a camera Y-direction fine adjustment handle, a camera Y-direction fine adjustment screw rod, a camera X-direction fine adjustment handle, a camera X-direction fine adjustment screw rod and a camera lens, wherein the lifting fine adjustment fixing bottom plate is fixed on the supporting frame, the lifting fine adjustment screw rod is arranged at the back of the lifting fine adjustment fixing bottom plate, the lifting fine adjustment handle is arranged at the bottom of the lifting fine adjustment screw rod, the lifting slider fixing plate is sleeved outside the lifting fine adjustment screw rod, the camera Y-direction fine adjustment fixing seat is fixed on one side of the lifting slider fixing plate, the camera Y-direction fine adjustment guide rail is fixed at the bottom of the camera, a camera Y-direction fine adjustment handle is arranged on one side of the camera Y-direction fine adjustment screw rod, a camera X-direction fine adjustment screw rod is arranged on the camera fixing plate, a camera lens is fixed below the camera X-direction fine adjustment screw rod, and a camera X-direction fine adjustment handle is arranged above the camera X-direction fine adjustment screw rod.

Preferably, the three-station carrying device comprises two reinforcing plates, a guide groove fixing plate, a guide groove, a three-station driving motor, a swing connecting shaft, a swing arm, a three-station connecting plate, a sucker fixing plate, a sucker lifting guide plate and a pressing cylinder, wherein the two reinforcing plates are fixed on the detection workbench, the guide groove fixing plate is fixed between the two reinforcing plates, the three-station driving motor is arranged behind the guide groove fixing plate and connected with the swing arm through the swing connecting shaft, the guide groove is formed in the guide groove fixing plate, the sucker lifting guide plate is arranged in the guide groove and slides along the guide groove, the swing arm is provided with a notch, the sucker lifting guide plate is sleeved in the notch, the pressing cylinder is arranged below the sucker lifting guide plate, the three-station connecting plate is connected below the pressing cylinder, the three sucker fixing plates are fixed on the three-station connecting plate at equal intervals, the bottom of the sucker fixing plate is provided with a sucker.

Preferably, the tectorial membrane device includes two tectorial membrane bed plates, tectorial membrane workstation, goes up the protection film, step motor, rubber roll down, on two tectorial membrane bed plates were fixed in the unloading workstation, be provided with the tectorial membrane workstation between two tectorial membrane bed plates, tectorial membrane workstation one side set up the protection film, and the opposite side sets up protection film down, and the bottom of going up protection film, protection film down all is provided with the rubber roll, and rubber roll one side sets up step motor.

Compared with the prior art, the utility model discloses a light guide plate defect vision automatic check out test set can effectively replace manual detection, avoids the easy risk that appears the false retrieval, neglected examination of manual detection, through the dual detection of overall dimension detection station and visual detection station, guarantees the accuracy and the high efficiency of detection; the visual detection station corresponds to the first visual detection device and the second visual detection device, the detection accuracy is further provided through double visual detection, and the working efficiency and the product quality are greatly improved; the annular light source is arranged, so that the polishing is more uniform, and a better polishing environment is provided for defect detection; the position of the annular light source can be properly adjusted by arranging the movable module, different polishing angles are provided, the selection of the polishing angles under different detection conditions is met, the polishing is flexible, the universality is good, and the detection quality of the defect detection of the light guide plate is favorably ensured; the first background conversion plate and the second background conversion plate are arranged, so that the detection background can be changed into black and white, and the background requirements of different detection items are met.

[ description of the drawings ]

Fig. 1 is a first perspective view of the automatic visual defect inspection apparatus for a light guide plate according to the present invention;

FIG. 2 is a perspective view of a transportation device of the automatic visual defect inspection apparatus for light guide plates of the present invention;

fig. 3 is a perspective view of a feeding manipulator of the automatic visual defect inspection device for a light guide plate according to the present invention;

FIG. 4 is a perspective view of the appearance size detecting device of the automatic visual defect detecting apparatus for light guide plate of the present invention;

FIG. 5 is a general view of a polishing device of the automatic visual inspection apparatus for defects of a light guide plate according to the present invention;

FIG. 6 is a view showing the internal structure of the polishing device of the automatic defect inspection apparatus for light guide plates of the present invention;

FIG. 7 is a structural diagram of a movable module of a polishing device of the automatic visual inspection apparatus for defects of a light guide plate according to the present invention;

FIG. 8 is a structural diagram of a supporting frame of a polishing device of the automatic visual inspection apparatus for defects of a light guide plate according to the present invention;

fig. 9 is a perspective view of a second visual inspection device of the automatic visual inspection apparatus for defects of a light guide plate according to the present invention;

fig. 10 is a perspective view of a three-station carrying device of the automatic visual defect inspection equipment for a light guide plate of the present invention;

fig. 11 is a perspective view of the film covering device of the automatic visual inspection device for defects of light guide plates.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be noted that all directional indications (such as up, down, left, right, front, and back … …) in the embodiments of the present invention are limited to relative positions on a given view, not absolute positions.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Referring to fig. 1, the utility model discloses a light guide plate defect vision automatic check out test set, including board 100, material loading workstation 200, detection achievement platform 300 and unloading workstation 400 have set gradually on the board 100, be provided with conveyer 210 on the material loading workstation 200, conveyer 210 stretches across above being provided with material loading manipulator 220, and conveyer 210 is used for transporting the product that awaits measuring, and material loading manipulator 220 is used for carrying the product that awaits measuring. The detecting workbench 300 is sequentially provided with an overall dimension detecting station 310, a visual detecting station 320 and an algorithm judging station 330, and a supporting frame 500 is fixed above the detecting workbench 300. The outer dimension detecting device 340, the first visual detecting device 360 and the second visual detecting device 370 are fixed on the supporting frame 500. The overall dimension detection device 340 is located right above the overall dimension detection station 310 and is used for detecting the overall dimension of the product to be detected. The first visual inspection device 360 and the second visual inspection device 370 are located right above the visual inspection station 320 and are used for detecting defects of the product to be detected. And a polishing device 350 is arranged in the visual detection station 320 and used for polishing the product to be detected, so that the accuracy of visual detection is improved. The three-station conveying device 380 is arranged on the same side of the overall dimension detection station 310, the visual detection station 320 and the algorithm judgment station 330, and is used for finishing the conveying of the product to be detected among the three stations. Two film coating devices 410 are symmetrically arranged on the blanking workbench 400, a blanking manipulator 420 is arranged on one side of each film coating device 410, the film coating devices 410 are used for performing film coating treatment on qualified products, and the structure of each blanking manipulator 420 is the same as that of each feeding manipulator 220.

The machine table 100 is internally provided with a control system and a detection system, the conveying device 210, the feeding manipulator 220, the overall dimension detection device 340, the first visual detection device 360, the second visual detection device 370, the polishing device 350, the three-station carrying device 380, the film covering device 410 and the blanking manipulator 420 are respectively electrically connected with the control system, and the overall dimension detection device 340, the first visual detection device 360 and the second visual detection device 370 are respectively electrically connected with the detection system.

Referring to fig. 2, the transportation device 210 includes a speed regulating motor 2101, a flexible conveyor belt 2102, two symmetrically arranged feeding side plates 2103, a linear guide 2104, a slider 2105, a sliding table cylinder 2106, a positioning rod 2107, a striker plate 2108, and an adjustable cylinder 2109. Two material loading curb plates 2103 are fixed in material loading workstation 200, set up flexible conveyer belt 2102 between two material loading curb plates 2103, and flexible conveyer belt 2102 one side sets up buncher 2101, and buncher 2101 drives flexible conveyer belt 2102 transmission. The linear guide 2104 spans and is fixed between two material loading side plates 2103, a sliding block 2105 is arranged on the linear guide 2104 in a sliding mode, an adjustable air cylinder 2109 is arranged on one side of the sliding block 2105, and the adjustable air cylinder 2109 drives the sliding block 2105 to slide along the linear guide 2104. A sliding table cylinder 2106 is fixed on the sliding block 2105 along the flexible conveying belt 2102, and a positioning rod 2107 is fixed at the bottom of the sliding table cylinder 2106 along the flexible conveying belt 2102. One end of the flexible conveyor belt 2102 is provided with a material baffle 2108 for blocking a product to be detected.

When the conveying device 210 works, the speed regulating motor 2101 drives the flexible conveying belt 2102 to transmit, a product to be detected is guided into the flexible conveying belt 2102 and is conveyed to the position of the material baffle 2108, the sliding table cylinder 2106 slides downwards to drive the positioning rod 2107 to move downwards, the adjustable cylinder 2109 drives the sliding block 2105 to slide to position the product to be detected, and the feeding manipulator 220 is waited to take the material.

Referring to fig. 3, the feeding robot 220 includes a robot frame 2201, an X-axis linear module 2202, a first servo motor 2203, a Y-axis linear module 2204, a second servo motor 2205, a 90 ° rotation cylinder 2206, a robot sliding cylinder 2207, and a vacuum chuck 2208. The manipulator frame 2201 stretches across and is fixed above the conveying device 210, the X-axis linear module 2202 is fixed above the manipulator frame 2201, a first servo motor 2203 is arranged on one side of the X-axis linear module 2202, the Y-axis linear module 2204 is vertically arranged on the X-axis linear module 2202, and the first servo motor 2203 drives the Y-axis linear module 2204 to move along the X-axis linear module 2202. A 90-degree rotary cylinder 2206 is arranged below the Y-axis linear module 2204, a second servo motor 2205 is arranged on one side of the Y-axis linear module 2204, and the second servo motor 2205 drives the 90-degree rotary cylinder 2206 to move along the Y-axis linear module 2204. A manipulator sliding table cylinder 2207 is arranged below the 90-degree rotating cylinder 2206, and a vacuum sucker 2208 is fixed below the manipulator sliding table cylinder 2207.

The during operation of material loading manipulator 220, through X axle straight line module 2202, Y axle straight line module 2204 moves when getting the material level, manipulator slip table cylinder 2207 gliding, vacuum chuck 2208 opens the vacuum, adsorb the product that awaits measuring, manipulator slip table cylinder 2207 rises, 90 revolving cylinder 2206 is rotatory 90, X axle straight line module 2202 simultaneously, Y axle straight line module 2204 displacement moves to overall dimension detection station 310, manipulator slip table cylinder 2207 gliding, vacuum chuck 2208 closes the vacuum, place the product that awaits measuring on overall dimension detection station 310, manipulator slip table cylinder 2207 rises, 90 revolving cylinder 2206 return, X axle straight line module 2202, Y axle straight line module 2204 gets back to and gets the material position, accomplish a circulation.

Referring to fig. 4, the overall dimension detecting device 340 includes an adjustable area light source 1, a high-definition camera 2, an optical zoom lens 3, an up-down moving module 4, a light source mounting rack 5, and a placing platform 7. The adjustable area light source 1 is vertically and fixedly connected to the bottom of the light source mounting frame 5, a support plate is fixedly connected to the side edge of the light source mounting frame 5, a module 4 is fixedly connected to the middle of the support plate in a vertical moving mode, a high-definition camera 2 is fixed to the bottom of the module 4 in a vertical moving mode, and an optical zoom lens 3 is arranged at the bottom of the high-definition camera 2. The center of the adjustable area light source 1 is hollowed to form a through hole, and the optical zoom lens 3 is arranged in the through hole. And the bottom of the adjustable surface light source 1 is uniformly provided with LED lamp beads.

A placing platform 7 is arranged under the adjustable area light source 1, a product 6 to be tested is placed on the placing platform 7, and the adjustable area light source 1 vertically irradiates the product 6 to be tested. The surface of the placing platform 7 is a dark background.

The up-and-down moving module 4 comprises a base and a sliding plate, a sliding column is arranged in the middle of the base, a sliding block is sleeved outside the sliding column, and the sliding block can slide up and down along the sliding column. The sliding block is externally fixed with a sliding plate, and the sliding plate can be fixed with the base through screws. The base is fixed on the support plate, and the high-definition camera 2 is fixed on the sliding plate.

The shape and size of the through hole are matched with the shape and size of the optical zoom lens 3.

The distance between the adjustable surface light source 1 and the placing platform 7 is 300mm-500 mm. The adjustable area light source 1 is a red light source.

During operation, the product 6 that awaits measuring is kept flat on place the platform 7 horizontally, and the adjustment reciprocates module 4 and is fixed, and the optical zoom lens 3 of fine setting uses adjustable area source 1 to polish the product 6 that awaits measuring, and high definition digtal camera 2 catches the detection to the appearance of the product 6 that awaits measuring.

Overall dimension automatic checkout device 340 can effectively replace artifical the detection, polish perpendicularly to the product 6 that awaits measuring through adjustable area source 1, and high definition digtal camera 2 can carry out the high definition to the product 6 that awaits measuring and shoot, and the appearance is caught and is detected size precision error steerable 0.01mm, effectively reduces the false retrieval rate, improves product production quality.

Referring to fig. 5 to 8, the light source box 350 includes a light source box body 10, the light source box body 10 includes a first box body 11 and a second box body 12, and the first box body 11 and the second box body 12 are separated by a baffle 13 to form two different detection stations. The first box 11 and the second box 12 are respectively fixed with a support frame 30 for supporting a product 90 to be tested. The four corners of the upper part of the first box body 11 and the second box body 12 are respectively provided with a movable module 20, each movable module 20 is located at the same height, a light source mounting plate 70 is fixed between the movable modules 20, and the light source mounting plate 70 can move up and down along the movable modules 20. Light source mounting panel 70 top is fixed with annular light source 50, and annular light source 50 encircles support frame 30 all around to can form annular light to the product 90 that awaits measuring on the support frame 30 and shine, luminance is more even, does benefit to and detects the defect. The light source mounting plate 70 is provided with a fixing screw hole 71, and an up-down adjusting screw is arranged in the fixing screw hole 71 and used for adjusting and fixing the position of the light source mounting plate 70. When the height of the ring-shaped light source 50 needs to be adjusted, the light source mounting plate 70 can be lifted by rotating the vertical adjusting screws in the fixing screw holes 71, so that the ring-shaped light source 50 is driven to be lifted to a proper position. LED lamp beads are uniformly arranged on the inner side of the annular light source 50 and used for emitting light uniformly. The LED lamp beads can be white light lamp beads or red light lamp beads.

The bottom of the first box 11 is provided with a first background conversion plate 111, the bottom of the second box 12 is provided with a second background conversion plate 121, the first background conversion plate 111 and the second background conversion plate 121 are fixedly connected through a second rotating bearing 82, and the first background conversion plate 111 and the second background conversion plate 121 are located on the same horizontal plane, so that the consistency of background conversion is ensured. One end of the first background conversion plate 111 is fixed by the first rotating bearing 81, one end of the second background conversion plate 121 is fixed by the third rotating bearing 83, and the first rotating bearing 81, the second rotating bearing 82 and the third rotating bearing 83 are located on the same straight line, so that the consistency of rotation is ensured. The outer side of the first rotating bearing 81 is connected with a rotating cylinder 40, and the rotating cylinder 40 drives the first rotating bearing 81 to rotate and sequentially drives the first background converting plate 111, the second rotating bearing 82, the second background converting plate 121, and the third rotating bearing 83 to rotate synchronously. The rotary cylinder 40 is a 180-degree rotary cylinder, and synchronous conversion of the background is completed by one-time rotation. The first background conversion plate 111 and the second background conversion plate 121 are both a white background on one side and a black background on the other side, the white background is used for detecting the defects of the product 90 to be detected, such as scratch, dirt, reverse conduction, broken filaments, point defects and the like, and the black background is used for detecting the edge of the product 90 to be detected.

The movable module 20 includes a module fixing seat 21, and the module fixing seat 21 is fixed at four corners above the inside of the first case 11 and the second case 12. Module fixing base 21 middle part sets up an optical axis 22, and the outside cover of optical axis 22 is equipped with a linear bearing 23, linear bearing 23 can be followed optical axis 22 and slided. A connecting block 24 is fixed outside the linear bearing 23, and the connecting block 24 is fixedly connected with the light source mounting plate 70. One side of the module fixing seat 21 is provided with a sliding groove 25, one end of the connecting block 24 comprises a connecting end 241, the connecting end 241 penetrates through the sliding groove 25 and is fixedly connected with the light source mounting plate 70, and the connecting end 241 can slide in the sliding groove 25. The connecting end 241 is provided with a plurality of connecting holes 242 for fixedly connecting with the light source mounting plate 70.

The supporting frame 30 comprises two fixing rods 31, the two fixing rods 31 are fixed inside the first box body 11 and the second box body 12 in parallel, two vertical rods 32 are vertically fixed on each fixing rod 31, the positions of the vertical rods 32 on the different fixing rods 31 correspond to each other one by one, a transverse supporting rod 33 is fixed between the two vertical rods 32 corresponding to the positions on the different fixing rods 31, the two transverse supporting rods 33 are located on the same horizontal plane and are arranged in parallel, and products to be measured 90 are placed on the two transverse supporting rods 33. Horizontal bracing piece 33 outside adopts soft materials to wrap up, can effectively prevent to await measuring product 90 and horizontal bracing piece 33 hard contact, prevents to survey product 90 and produces secondary damage.

When the device works, a product to be measured 90 is flatly placed on the supporting frame 30, the annular light source 50 is used for polishing the product to be measured 90, the upper and lower adjusting screws are rotated to adjust the position of the light source mounting plate 70, and the annular light source 50 is moved to be horizontal to the plane of the product to be measured 90; the black backgrounds on the first background conversion plate 111 and the second background conversion plate 121 face upward to detect the edge of the product 90 to be detected by rotating the air cylinder by 180 degrees, and the white backgrounds on the first background conversion plate 111 and the second background conversion plate 121 face upward to detect the defects of scratching, dirt, reverse guiding, broken filaments, point defects and the like of the product 90 to be detected by rotating the air cylinder by 180 degrees.

The polishing device 350 enables polishing to be more uniform by arranging the annular light source 50, and provides a better polishing environment for defect detection; the position of the annular light source 50 can be properly adjusted by arranging the movable module 20, so that different polishing angles are provided, the selection of the polishing angles under different detection conditions is met, the polishing is flexible, the universality is good, and the detection quality of the defect detection of the light guide plate is favorably ensured; the first background conversion plate 111 and the second background conversion plate 121 are arranged to enable the detection background to be changed into black and white, so that the background requirements of different detection items are met.

Referring to fig. 9, the second visual inspection apparatus 370 includes a fine-adjustment lifting fixing base plate 3701, a fine-adjustment lifting screw 3702, a fine-adjustment lifting handle 3703, a sliding block fixing plate 3704, a fine-adjustment camera Y-fixing base 3705, a fine-adjustment camera Y-guide rail 3706, a fine-adjustment camera Y-handle 3707, a fine-adjustment camera Y-guide screw 3708, a fine-adjustment camera X-handle 3709, a fine-adjustment camera X-handle 37010, and a camera lens 37011. The lifting fine-adjustment fixing base plate 3701 is fixed on the supporting frame 500, a lifting fine-adjustment screw 3702 is arranged at the back of the lifting fine-adjustment fixing base plate 3701, a lifting fine-adjustment handle 3703 is arranged at the bottom of the lifting fine-adjustment screw 3702, the lifting slider fixing plate 3704 is sleeved outside the lifting fine-adjustment screw 3702, and the lifting slider fixing plate 3704 can be controlled to lift by adjusting the lifting fine-adjustment handle 3703. A camera Y-direction fine adjustment fixing seat 3705 is fixed on one side of a lifting slide block fixing plate 3704, a camera Y-direction fine adjustment guide rail 3706 is fixed at the bottom of the camera Y-direction fine adjustment fixing seat 3705, a camera Y-direction fine adjustment screw 3708 is arranged in the camera Y-direction fine adjustment guide rail 3706, a camera fixing plate is sleeved outside the camera Y-direction fine adjustment screw 3708, a camera Y-direction fine adjustment handle 3707 is arranged on one side of the camera Y-direction fine adjustment screw 3708, and the camera Y-direction fine adjustment handle 3707 can adjust the camera fixing plate to move on the camera Y-. A camera X-direction fine adjustment screw 37010 is arranged on the camera fixing plate, a camera lens 37011 is fixed below the camera X-direction fine adjustment screw 37010, a camera X-direction fine adjustment handle 3709 is arranged above the camera X-direction fine adjustment screw 37010, and the position of the camera lens 37011 can be adjusted by the camera X-direction fine adjustment handle 3709. The camera lenses 37011 are two in number.

The second visual inspection device 370 has a function of adjusting the working distance of the camera lens 37011, and the camera lens 37011 is lifted and lowered by adjusting the lifting fine adjustment screw 3702, the lifting fine adjustment handle 3703, and the lifting slider fixing plate 3704. Since the second visual inspection apparatus 370 is equipped with two camera lenses 37011, the distance between the camera lenses 37011 is slightly adjusted by fine adjustment of the Y-direction distance by the camera Y-direction fine adjustment rail 3706, the camera Y-direction fine adjustment handle 3707, and the camera Y-direction fine adjustment screw 3708. The distance in the X direction is adjusted by a camera X direction fine adjustment handle 3709 and a camera X direction fine adjustment screw 37010. The first visual inspection device 360 has one less camera lens 37011 than the second visual inspection device 370.

Referring to fig. 10, the three-position carrying device 380 includes two reinforcing plates 3801, a guide groove fixing plate 3802, a guide groove 3803, a three-position driving motor 3804, a swing connecting shaft 3805, a swing arm 3806, a three-position connecting plate 3807, a suction cup fixing plate 3808, a suction cup lifting guide plate 3809, and a pressing cylinder 38010. The two reinforcing plates 3801 are fixed on the detection workbench 300, a guide groove fixing plate 3802 is fixed between the two reinforcing plates 3801, a three-position driving motor 3804 is arranged behind the guide groove fixing plate 3802, the three-position driving motor 3804 is connected with a swinging arm 3806 through a swinging connecting shaft 3805, and the three-position driving motor 3804 drives the swinging arm 3806 to swing. The guide groove fixing plate 3802 is provided with a guide groove 3803, a sucker lifting guide plate 3809 is arranged in the guide groove 3803, and the sucker lifting guide plate 3809 slides along the guide groove 3803. The swing arm 3806 is provided with a notch, the sucker lifting guide plate 3809 is sleeved in the notch, and the sucker lifting guide plate 3809 in the swing arm 3806 slides along the guide groove 3803. The lower portion of the suction cup lifting guide plate 3809 is provided with a pressing cylinder 38010, the lower portion of the pressing cylinder 38010 is connected with a three-station connecting plate 3807, three suction cup fixing plates 3808 are fixed on the three-station connecting plate 3807 at equal intervals, and suction cups are arranged at the bottoms of the suction cup fixing plates 3808. The three-station carrying device 380 further comprises a suction cup negative pressure meter, and the suction cup negative pressure meter is connected with the suction cup. The three-station driving motor 3804 is a servo motor.

The sucking disc negative pressure table detects the negative pressure and judges whether there is the material, suggestion alarm information, sucking disc install on sucking disc fixed plate 3808 connect in three station connecting plate 3807 through sucking disc lift deflector 3809 lift direction, drive swing arm 3806 swing movement through three station driving motor 3804 and drive three station connecting plate 3807 and carry out the fixed position displacement, play the effect of transport material.

Referring to fig. 11, the laminating device 410 includes two laminating base plates 4101, a laminating table 4102, an upper protective film 4103, a lower protective film 4104, a stepping motor 4105, and a rubber roller 4106. The two film coating base plates 4101 are fixed on a blanking workbench 400, a film coating workbench 4102 is arranged between the two film coating base plates 4101, an upper protection film 4103 is arranged on one side of the film coating workbench 4102, a lower protection film 4104 is arranged on the other side of the film coating workbench 4102, rubber rollers 4106 are arranged at the bottoms of the upper protection film 4103 and the lower protection film 4104, a stepping motor 4105 is arranged on one side of the rubber rollers 4106, and the stepping motor 4105 drives the rubber rollers 4106 to roll so as to drive the upper protection film 4103 and the lower protection film 4104 to cover the upper surface and the.

When the detection equipment works, a product to be detected is guided in by the conveying device 210, the feeding manipulator 220 conveys the product to be detected to the overall dimension detection station 310 from the conveying device 210, the overall dimension detection device 340 detects the overall dimension of the product to be detected, then the three-station conveying device 380 conveys the product to be detected to the visual detection station 320, the first visual detection device 360 and the second visual detection device 370 sequentially detect the defect of the product to be detected, then the three-station conveying device 380 conveys the product to the algorithm determination station 330, the detection system determines whether the product is qualified or unqualified, the blanking manipulator 420 conveys the qualified product to the film covering device 410 for film covering treatment, conveys the unqualified product to the waste storage box, and the detection is completed.

A detection method of light guide plate defect visual automatic detection equipment comprises the following steps:

step S1, feeding a die cavity of the injection molding machine, and automatically butting the to-be-detected product against the flexible conveyor belt 2102 and positioning the to-be-detected product by a positioning rod 2107;

step S2, the product to be detected is carried to the overall dimension detection station 310 through the feeding manipulator 220, and the overall dimension detection device 340 detects the overall dimension of the product to be detected;

step S3, the three-station carrying device 380 carries the product to be detected to the second box 12 of the visual detection station 320, the polishing device 350 switches the background of the second background conversion plate 121 into a black background, and polishes the product to be detected by the annular light source 50, and the first visual detection device 360 performs edge detection on the product to be detected;

step S4, the polishing device 350 switches the background of the second background conversion board 121 into a white background, and polishes the product to be detected by the annular light source 50, and the first visual inspection device 360 performs scratch, dirt, reverse, broken filament, and dot defects on the product to be detected;

step S5, the three-station carrying device 380 carries the product to be detected to the first box 11 of the visual detection station 320, the polishing device 350 switches the background of the first background conversion plate 111 into a black background, and polishes the product to be detected by the annular light source 50, and the second visual detection device 370 performs edge detection on the product to be detected;

step S6, the polishing device 350 switches the background of the first background conversion board 111 into a white background, and polishes the product to be detected by the annular light source 50, and the second visual inspection device 370 performs scratch, dirt, reverse, broken filament, and dot defects on the product to be detected;

step S7, the three-station carrying device 380 carries the product to be detected to the algorithm judging station 330, and the detecting system integrates the detecting results of the outline dimension detecting station 310 and the visual detecting station 320 to judge the product to be qualified or unqualified;

in step S8, the feeding robot 420 transports the acceptable products to the laminating device 410 for laminating and transports the unacceptable products to a scrap storage box for recycling.

Compared with the prior art, the utility model discloses a light guide plate defect vision automatic check out test set can effectively replace manual detection, avoids the easy risk that appears the false retrieval, neglected examination of manual detection, through the dual detection of overall dimension detection station 310 and visual detection station 320, guarantees the accuracy and the high efficiency of detection; the visual detection station 320 corresponds to the first visual detection device 360 and the second visual detection device 370, and detection accuracy is further improved through double visual detection, so that the working efficiency and the product quality are greatly improved; by arranging the annular light source 50, the polishing is more uniform, and a better polishing environment is provided for defect detection; the position of the annular light source 50 can be properly adjusted by arranging the movable module 20, so that different polishing angles are provided, the selection of the polishing angles under different detection conditions is met, the polishing is flexible, the universality is good, and the detection quality of the defect detection of the light guide plate is favorably ensured; the first background conversion plate 111 and the second background conversion plate 121 are arranged to enable the detection background to be changed into black and white, so that the background requirements of different detection items are met.

The above description is only for the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications made within the spirit of the present invention, equivalent replacements and improvements should be included in the scope of the present invention.

Claims (9)

1. The automatic visual detection equipment for the defects of the light guide plate is characterized by comprising a machine table, wherein a feeding workbench, a detection workbench and a discharging workbench are sequentially arranged on the machine table, a conveying device is arranged on the feeding workbench, and a feeding manipulator stretches over the conveying device;

the detecting device comprises a detecting workbench, a supporting frame, an overall dimension detecting device, a first visual detecting device and a second visual detecting device, wherein the overall dimension detecting station, the visual detecting station and an algorithm judging station are sequentially arranged on the detecting workbench;

a polishing device is arranged in the visual detection station and used for polishing a product to be detected, and a three-station carrying device is arranged on the same side of the overall dimension detection station, the visual detection station and the algorithm judgment station;

two film coating devices are symmetrically arranged on the blanking workbench, and a blanking manipulator is arranged on one side of each film coating device;

the machine table is internally provided with a control system and a detection system, the conveying device, the feeding mechanical arm, the overall dimension detection device, the first visual detection device, the second visual detection device, the polishing device, the three-station carrying device, the film laminating device and the discharging mechanical arm are respectively electrically connected with the control system, and the overall dimension detection device, the first visual detection device and the second visual detection device are respectively electrically connected with the detection system.

2. The apparatus for visually inspecting defects of a light guide plate according to claim 1, wherein the transportation device comprises two feeding side plates, the two feeding side plates are fixed on the feeding worktable, a flexible conveyor belt is arranged between the two feeding side plates, and one side of the flexible conveyor belt is provided with a speed regulating motor which drives the flexible conveyor belt to drive.

3. The apparatus for automatically inspecting defects of light guide plates according to claim 2, wherein the transportation device comprises a linear guide rail, the linear guide rail is fixed between the two loading side plates in a crossing manner, a sliding block is slidably disposed on the linear guide rail, an adjustable cylinder is disposed on one side of the sliding block, and the adjustable cylinder drives the sliding block to slide along the linear guide rail.

4. The automatic visual defect detection equipment for the light guide plate according to claim 3, wherein a sliding table cylinder is fixed on the sliding block along the direction of the flexible conveying belt, a positioning rod is fixed at the bottom of the sliding table cylinder along the direction of the flexible conveying belt, and a material baffle plate is arranged at one end of the flexible conveying belt.

5. The apparatus for automatically inspecting defects of a light guide plate according to claim 1, wherein the loading robot comprises a robot frame, the robot frame is fixed above the transportation device in a crossing manner, an X-axis linear module is fixed above the robot frame, a first servo motor is arranged on one side of the X-axis linear module, a Y-axis linear module is vertically arranged on the X-axis linear module 2202, and a second servo motor is arranged on one side of the Y-axis linear module.

6. The automatic visual inspection device for defects of light guide plates according to claim 5, wherein a 90 ° rotary cylinder is disposed below the Y-axis linear module, a manipulator sliding table cylinder is disposed below the 90 ° rotary cylinder, and a vacuum chuck is fixed below the manipulator sliding table cylinder.

7. The automatic visual inspection device for defects of light guide plates according to claim 1, wherein the second visual inspection device comprises a lifting/lowering fine-tuning fixing base plate, a lifting/lowering fine-tuning screw rod, a lifting/lowering fine-tuning handle, a lifting/lowering slider fixing plate, a camera Y-direction fine-tuning fixing base, a camera Y-direction fine-tuning guide rail, a camera Y-direction fine-tuning handle, a camera Y-direction fine-tuning screw rod, a camera X-direction fine-tuning handle, a camera X-direction fine-tuning screw rod, and a camera lens, the lifting/lowering fine-tuning fixing base plate is fixed on the supporting frame, the lifting/lowering fine-tuning screw rod is provided at the back of the lifting/lowering fine-tuning fixing base plate, the lifting/lowering fine-tuning handle is provided at the bottom of the lifting/lowering fine-tuning screw rod, the camera Y-direction fine-tuning fixing base, the camera Y is equipped with the camera fixed plate to the outside cover of fine setting lead screw, and camera Y sets up camera Y to the fine setting handle to fine setting lead screw one side, sets up camera X on the camera fixed plate to the fine setting lead screw, and camera X sets up camera X to the fine setting handle to fine setting lead screw below fixed camera lens, camera X.

8. The automatic visual inspection device for defects of light guide plates according to claim 1, wherein the three-position carrying device comprises two reinforcing plates, a guide groove fixing plate, a guide groove, a three-position driving motor, a swing connecting shaft, a swing arm, a three-position connecting plate, a sucker fixing plate, a sucker lifting guide plate and a down-pressing cylinder, the two reinforcing plates are fixed on the inspection workbench, the guide groove fixing plate is fixed between the two reinforcing plates, the three-position driving motor is arranged behind the guide groove fixing plate, the three-position driving motor is connected with the swing arm through the swing connecting shaft, the guide groove fixing plate is provided with the guide groove, the sucker lifting guide plate is arranged in the guide groove, the sucker lifting guide plate slides along the guide groove, the swing arm is provided with a notch, the sucker lifting guide plate is sleeved in the notch, the down-pressing cylinder is arranged below the sucker lifting guide plate, the three-position connecting plate is connected below, three sucker fixing plates are fixed on the three-station connecting plate at equal intervals, and suckers are arranged at the bottoms of the sucker fixing plates.

9. The automatic visual inspection device for defects of light guide plates according to claim 1, wherein the film coating device comprises two film coating base plates, a film coating workbench, an upper protective film, a lower protective film, a stepping motor and a rubber roller, the two film coating base plates are fixed on the blanking workbench, the film coating workbench is arranged between the two film coating base plates, one side of the film coating workbench is provided with the upper protective film, the other side of the film coating workbench is provided with the lower protective film, the rubber roller is arranged at the bottom of each of the upper protective film and the lower protective film, and the stepping motor is arranged at one side of the rubber roller.

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