CN110908156B - An AOI automatic inspection equipment for LCD screen circuits - Google Patents
An AOI automatic inspection equipment for LCD screen circuits Download PDFInfo
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- CN110908156B CN110908156B CN201911347985.4A CN201911347985A CN110908156B CN 110908156 B CN110908156 B CN 110908156B CN 201911347985 A CN201911347985 A CN 201911347985A CN 110908156 B CN110908156 B CN 110908156B
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- 238000007689 inspection Methods 0.000 title claims description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 214
- 238000012546 transfer Methods 0.000 claims abstract description 172
- 238000001514 detection method Methods 0.000 claims abstract description 108
- 238000007599 discharging Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000012937 correction Methods 0.000 claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 124
- 230000007306 turnover Effects 0.000 claims description 46
- 230000002950 deficient Effects 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 9
- 230000000007 visual effect Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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Abstract
本发明公开了一种液晶屏线路AOI自动检测设备，其包括机架、控制装置、上料装置、检测装置、取料装置及下料装置；上料装置包括前输送机构、位置校正机构及前中转机构，前输送机构用于输送待测液晶屏，位置校正机构用于校正待测液晶屏的位置；检测装置包括移载机构和检测机构，移载机构可沿着机架的纵向进行移动，检测机构设于移载机构上方；取料装置包括进料移送机构和卸料移送机构，进料移送机构将待测液晶屏移送至移载机构上，卸料移送机构将经检测机构检测的液晶屏移送至下料装置；下料装置用于输送良品液晶屏和不良液晶屏。本发明不仅实现了液晶屏的自动上下料，而且可以校正液晶屏上料时的位置，极大地提高了液晶屏检测的效率。
The present invention discloses an automatic AOI detection device for LCD screen circuits, which includes a frame, a control device, a loading device, a detection device, a material taking device and a material unloading device; the loading device includes a front conveying mechanism, a position correction mechanism and a front transfer mechanism, the front conveying mechanism is used to convey the LCD screen to be tested, and the position correction mechanism is used to correct the position of the LCD screen to be tested; the detection device includes a transfer mechanism and a detection mechanism, the transfer mechanism can move along the longitudinal direction of the frame, and the detection mechanism is arranged above the transfer mechanism; the material taking device includes a feeding transfer mechanism and a discharging transfer mechanism, the feeding transfer mechanism transfers the LCD screen to be tested to the transfer mechanism, and the discharging transfer mechanism transfers the LCD screen detected by the detection mechanism to the unloading device; the unloading device is used to convey good LCD screens and bad LCD screens. The present invention not only realizes the automatic loading and unloading of LCD screens, but also can correct the position of the LCD screen when loading, greatly improving the efficiency of LCD screen detection.
Description
Technical Field
The invention relates to the field of visual detection equipment, in particular to automatic detection equipment for AOI of a liquid crystal display circuit.
Background
The liquid crystal screen has the advantages of small size, low power consumption, low radiation and the like, is widely applied to electronic equipment, and various defects such as incapability of lighting a screen, scratch of the appearance of the screen and the like are easily formed in the production process of the liquid crystal screen, so that the liquid crystal screen is very necessary to detect, and the outflow of the defective liquid crystal screen can be prevented.
In the production line of the existing liquid crystal screen, detection of the liquid crystal screen is completed through manual auxiliary visual detection equipment, namely when the visual detection equipment detects, the liquid crystal screen to be detected needs to be fed to a detection table manually, the detected liquid crystal screen is fed after the detection is completed, the operation mode of the liquid crystal screen detection is low in efficiency, and for detecting batch liquid crystal screens, large labor cost is consumed, so that the cost of products rises.
Meanwhile, in order to ensure the detection accuracy, during feeding, the liquid crystal screen to be detected needs to be accurately placed according to the detection area of the detection table, so that the visual detection equipment can comprehensively and accurately detect the liquid crystal screen to be detected, and accidental errors in the detection process are reduced. In the existing visual detection equipment, after the detection platform is manually fed, the liquid crystal display screen needs to be aligned at a proper position on the detection platform so as to ensure the accuracy of the detection of the follow-up liquid crystal display screen, but the detection efficiency of the liquid crystal display screen is further reduced.
Disclosure of Invention
The invention aims to provide automatic detection equipment for an AOI (automated optical inspection) of a liquid crystal display circuit, which not only can realize automatic feeding and discharging of the liquid crystal display, but also can correct the position of the liquid crystal display during feeding, and greatly improves the detection efficiency of the liquid crystal display.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a LCD screen circuit AOI automated inspection equipment, includes frame, controlling means, set up in loading attachment, detection device, extracting device and unloader in the frame, wherein:
the feeding device comprises a front conveying mechanism, a position correcting mechanism and a front transfer mechanism, wherein the front conveying mechanism is arranged on the frame and used for conveying the liquid crystal screen to be tested, and the position correcting mechanism is arranged above the front conveying mechanism and used for correcting the position of the liquid crystal screen to be tested and transferring the liquid crystal screen to be tested to the front transfer mechanism;
The detection device is arranged behind the feeding device and comprises a transfer mechanism and a detection mechanism, wherein the transfer mechanism can move along the longitudinal direction of the frame, the detection mechanism is arranged above the transfer mechanism, and the detection mechanism is used for detecting the liquid crystal screen to be detected;
The material taking device is arranged between the feeding device and the discharging device and comprises a feeding transfer mechanism and a discharging transfer mechanism, the feeding transfer mechanism transfers the liquid crystal screen to be tested on the front transfer mechanism to the transfer mechanism, and the discharging transfer mechanism transfers the liquid crystal screen detected by the detection mechanism on the transfer mechanism to the discharging device;
the blanking device is arranged behind the detection device and is used for conveying good liquid crystal screens and bad liquid crystal screens;
The feeding device, the detecting device, the material taking device and the discharging device work through the control device respectively.
Preferably, the position correction mechanism comprises a first image capturing component, a first grabbing component and a moving component, wherein:
the first image capturing component is arranged right above the front conveying mechanism and is used for shooting images of the passing liquid crystal display to be tested;
The first grabbing component comprises a first mounting seat, a rotating piece and a first sucker, wherein the first mounting seat is positioned above the front conveying mechanism, the rotating piece is arranged on the first mounting seat, the first sucker is arranged on the rotating piece, and the first sucker is used for grabbing a liquid crystal screen to be detected and can drive the first sucker to rotate through the rotating piece;
The moving assembly comprises a traversing part, a longitudinally moving part and a vertically moving part, the traversing part is arranged on the side edge of the front conveying mechanism, the longitudinally moving part is arranged on the traversing part and moves transversely of the front conveying mechanism through the traversing part, the vertically moving part is arranged on the longitudinally moving part and moves longitudinally of the front conveying mechanism through the longitudinally moving part, and the first mounting seat is arranged on the vertically moving part and moves vertically of the front conveying mechanism through the vertically moving part.
Preferably, the transverse moving piece comprises a first base, a transverse moving screw rod, a transverse moving motor and a transverse moving sliding seat, wherein the first base is arranged on the frame, the transverse moving screw rod is rotationally arranged on the first base and driven by the transverse moving motor, and the transverse moving sliding seat is matched with the transverse moving screw rod;
The longitudinal moving piece comprises a second base, a longitudinal moving screw rod, a longitudinal moving motor and a longitudinal moving sliding seat, wherein the second base is fixedly arranged on the transverse moving sliding seat, the longitudinal moving screw rod is rotationally arranged on the second base and driven by the longitudinal moving motor, and the longitudinal moving sliding seat is matched with the longitudinal moving screw rod;
The vertical moving part comprises a third base, a vertical guide rail and a vertical moving cylinder, the third base is fixedly arranged on a vertical moving sliding seat, the vertical guide rail and the vertical moving cylinder are both arranged on the third base, and the first mounting seat is arranged on the vertical guide rail and is driven to move along the vertical guide rail by the vertical moving cylinder;
The rotating piece comprises a servo motor and a connecting seat, wherein the servo motor is arranged on a first mounting seat, the connecting seat is arranged below the first mounting seat and is connected with a crankshaft of the servo motor, and the first sucker is fixedly arranged on the connecting seat.
The front transfer mechanism comprises a front transfer table and a front turnover assembly, the front transfer table and the front turnover assembly are sequentially arranged behind the front conveying mechanism, the first grabbing assembly is used for transferring the liquid crystal screen to be tested after the correction position to the front transfer table through the moving assembly, the front turnover assembly comprises a turnover seat, a turnover motor, a turnover shaft, a second sucker and an angle sensor, the turnover seat is arranged on the frame, the turnover motor is arranged on the turnover seat, the turnover shaft is rotationally arranged on the turnover seat and connected with a shaft of the turnover motor, the second sucker and the angle sensor are both connected to the turnover shaft and rotate together with the turnover shaft, and the second sucker is used for grabbing the liquid crystal screen to be tested on the front transfer table.
Preferably, the transfer mechanism comprises a fourth base, a transfer screw rod, a transfer motor, a transfer sliding seat and a transfer table, wherein the fourth base is longitudinally arranged on the frame, the transfer screw rod is rotationally arranged on the fourth base and driven by the transfer motor, the transfer sliding seat is matched with the transfer screw rod, the transfer table is fixedly arranged on the transfer sliding seat, a first support seat is arranged above the fourth base, the detection mechanism comprises a fifth base, a detection screw rod, a detection motor, a detection sliding seat, a second mounting seat and a second image capturing assembly, the fifth base is transversely arranged on the first support seat, the detection screw rod is rotationally arranged on the fifth base and driven by the detection motor, the detection sliding seat is matched with the detection screw rod, the second mounting seat is fixedly arranged on the detection sliding seat, and the second image capturing assembly is arranged on the second mounting seat and can move to the position right above the transfer table.
Preferably, the second image capturing component comprises a camera, a third mounting seat, a light source, a code reader and a distance digital display, wherein the camera is arranged on the second mounting seat, the third mounting seat is of a frame-shaped structure and is fixedly arranged on the second mounting seat and positioned at the front side of the camera, the light source and the code reader are arranged on the third mounting seat, and the distance digital display is arranged on the second mounting seat.
Preferably, the number of the detecting devices at least comprises four, each detecting device is arranged in parallel in sequence, and the material taking device is arranged between the feeding device and the discharging device and is arranged along the transverse direction of the detecting device.
Preferably, the feeding transfer mechanism and the discharging transfer mechanism comprise a sixth base, a belt wheel assembly, a transfer motor, a transfer sliding seat and a second grabbing assembly, a second support is arranged on the frame, the sixth base is transversely arranged on the second support, the belt wheel assembly is arranged in the sixth base and driven by the transfer motor, the transfer sliding seat is arranged on the sixth base and driven by the belt wheel assembly to move, the second grabbing assembly is fixedly arranged on the transfer sliding seat, the second grabbing assembly of the feeding transfer mechanism transfers the liquid crystal screen to be detected on the front transfer mechanism to the transfer mechanism, and the second grabbing assembly of the discharging transfer mechanism transfers the liquid crystal screen detected by the detection mechanism to the discharging device.
Preferably, the second grabbing component comprises a screw rod module, a fourth mounting seat and a third sucker, the screw rod module is fixedly arranged on the transfer sliding seat, the fourth mounting seat is connected to the screw rod module, the third sucker is arranged at the bottom of the fourth mounting seat and used for grabbing a liquid crystal screen to be detected on the front transfer mechanism/a liquid crystal screen on the transfer mechanism, an installation frame is arranged below the sixth base, an ion fan is arranged on the installation frame, and the ion fan is located above each detection mechanism.
Preferably, the blanking device comprises a rear conveying mechanism and a blanking mechanism, the rear conveying mechanism comprises a defective product conveying mechanism and a defective product conveying mechanism, the blanking mechanism is arranged between the defective product conveying mechanism and the defective product conveying mechanism, the blanking mechanism comprises a seventh base, a blanking screw rod, a blanking motor, a blanking sliding seat and a rear overturning assembly, the seventh base is longitudinally arranged on the frame, the blanking screw rod is rotationally arranged on the seventh base and driven by the blanking motor, the blanking sliding seat is matched with the blanking screw rod, the rear overturning assembly is fixedly arranged on the blanking sliding seat, the structure of the rear overturning assembly is consistent with that of the front overturning assembly, the defective liquid crystal screen conveyed by the discharging conveying mechanism is arranged in the defective product conveying mechanism, and the defective liquid crystal screen conveyed by the discharging mechanism is arranged in the rear overturning assembly and is conveyed to the defective product conveying mechanism by the rear overturning assembly.
After the technical scheme is adopted, compared with the background technology, the invention has the following advantages:
1. According to the invention, the liquid crystal screen to be detected is conveyed to the front transfer mechanism after the position of the liquid crystal screen to be detected is corrected by the feeding device, then the liquid crystal screen to be detected on the front transfer mechanism is conveyed to the transfer mechanism by the feeding conveying mechanism, the liquid crystal screen to be detected is conveyed to the lower part of the detection mechanism by the transfer mechanism to be detected, and after detection is finished, the liquid crystal screen on the transfer mechanism is conveyed to the blanking device by the discharging conveying mechanism to carry out blanking of good liquid crystal screens and bad liquid crystal screens, so that not only is the automatic feeding and blanking of the liquid crystal screens realized, but also the position of the liquid crystal screen during feeding can be corrected, and the detection efficiency of the liquid crystal screen is greatly improved.
2. The number of the detection devices in the invention at least comprises four detection devices which are sequentially arranged in parallel, and the detection devices can simultaneously carry out detection work by continuously feeding and discharging the materials through the feeding and conveying mechanism, so that the detection efficiency of the liquid crystal display is further improved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view (with the equipment housing removed) of the present invention;
FIG. 3 is a perspective view of a loading device;
FIG. 4 is a schematic diagram of a position correction mechanism;
FIG. 5 is one of the mounting schematic views of the first gripper assembly;
FIG. 6 is a second schematic view of the first gripper assembly;
FIG. 7 is a schematic view of the front transfer mechanism;
FIG. 8 is a perspective view of a detection device;
FIG. 9 is a perspective view of the detection device (with the housing removed);
FIG. 10 is a schematic diagram of the installation of a second imaging assembly;
FIG. 11 is a perspective view of a take-off device;
fig. 12 is a perspective view of the take-off (with the frame removed);
FIG. 13 is a schematic view of the installation of a second gripper assembly;
fig. 14 is a perspective view of the blanking apparatus.
Reference numerals illustrate:
1. the device comprises a frame, a feeding device, a detecting device, a material taking device, a discharging device, a liquid crystal screen to be tested and a tested liquid crystal screen, wherein the feeding device, the detecting device, the material taking device, the discharging device and the liquid crystal screen to be tested are arranged in sequence;
100. A front conveying mechanism;
200. The device comprises a position correction mechanism 210, a first image capturing assembly 220, a first grabbing assembly 221, a first mounting base 222, a rotating member 2221, a servo motor 2222, a connecting base 223, a first sucking disc 230, a moving assembly 231, a traversing member 2311, a first base 2312, a traversing motor 2313, a traversing slide seat 232, a longitudinal moving member 2321, a second base 2322, a longitudinal moving motor 2323, a longitudinal moving slide seat 233, a vertical moving member 2331, a third base 2332, a vertical guide rail 2333 and a vertical moving cylinder.
300. Front transfer mechanism 310, front transfer table 320, front turnover assembly 321, turnover seat 322, turnover motor 323, turnover shaft 324, second sucker 325, angle sensor;
400. the transfer mechanism 410, the fourth base 420, the transfer motor 430, the transfer sliding seat 440, the transfer platform 450 and the first support;
500. The device comprises a detection mechanism 510, a fifth base, 520, a detection motor, 530, a detection sliding seat, 540, a second mounting seat, 550, a second image capturing component, 551, a camera, 552, a third mounting seat, 553, a light source, 554, a code reader and 555, and a distance digital display;
600. A feed transfer mechanism 700, a discharge transfer mechanism 671, a sixth base, 672, a pulley assembly, 673, a transfer motor, 674, a transfer carriage, 675, a second gripper assembly, 675, a lead screw module, 6752, a fourth mount, 6753, a third suction cup, 676, a second mount, 677, a mounting bracket, 678, an ion blower;
800. The rear conveying mechanism, 810 defective conveying mechanism, 820. Defective conveying mechanism;
900. The blanking mechanism 910, the seventh base, 920, the blanking motor 930, the blanking slide seat 940 and the rear overturning assembly.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that, in the present invention, terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element of the present invention must have a specific orientation, and thus should not be construed as limiting the present invention.
Examples
The invention discloses automatic detection equipment for an AOI (automated optical inspection) of a liquid crystal display circuit, which is shown in the drawings by matching with fig. 1 to 7, and comprises a frame 1, a control device (not shown in the drawings), a feeding device 2, a detection device 3, a material taking device 4 and a discharging device 5, wherein the feeding device 2, the detection device 3, the material taking device 4 and the discharging device 5 are arranged on the frame 1.
The feeding device 2 comprises a front conveying mechanism 100, a position correcting mechanism 200 and a front transfer mechanism 300, wherein the front conveying mechanism 100 is arranged on the frame 1 and used for conveying the liquid crystal screen 6 to be tested, the position correcting mechanism 200 is arranged above the front conveying mechanism 100 and used for correcting the position of the liquid crystal screen 6 to be tested and transferring the liquid crystal screen 6 to be tested to the front transfer mechanism 300.
The position correction mechanism 200 includes a first image capturing component 210, a first grabbing component 220, and a moving component 230, where the first image capturing component 210 is disposed right above the front conveying mechanism 100 and is used for capturing an image of the passing liquid crystal display 6 to be tested, and an infrared sensor can be disposed above the front conveying mechanism 100 to stop and run the front conveying mechanism 100, so as to ensure the definition of the capturing of the first image capturing component 210.
The first grabbing component 220 comprises a first mounting seat 221, a rotating member 222 and a first sucker 223, the first mounting seat 221 is located above the front conveying mechanism 100, the rotating member 222 is arranged on the first mounting seat 221, the first sucker 223 is arranged on the rotating member 222, the first sucker 223 is used for grabbing the liquid crystal screen 6 to be tested, and the rotating member 222 can drive the first sucker 223 to rotate. The rotating member 222 includes a servo motor 2221 and a connecting base 2222, the servo motor 2221 is disposed on the first mounting base 221, the connecting base 2222 is disposed below the first mounting base 221 and connected to a crankshaft of the servo motor 2221, and the first suction cup 223 is fixedly disposed on the connecting base 2222.
The moving assembly 230 includes a traversing element 231, a longitudinally moving element 232 and a vertically moving element 233, the traversing element 231 is disposed on a side edge of the front conveying mechanism 100, the longitudinally moving element 232 is disposed on the traversing element 231, the traversing element 231 moves in a lateral direction of the front conveying mechanism 100, the vertically moving element 233 is disposed on the longitudinally moving element 232, the longitudinally moving element 232 moves in a longitudinal direction of the front conveying mechanism 100, and the first mounting seat 221 is disposed on the vertically moving element 233, and the vertically moving element 233 moves in a vertical direction of the front conveying mechanism 100.
The traverse member 231 includes a first base 2311, a traverse screw (not shown), a traverse motor 2312, and a traverse slider 2313, the first base 2311 is disposed on the frame 1, and the traverse screw is rotatably disposed on the first base 2311 and driven by the traverse motor 2312, and the traverse slider 2313 is engaged with the traverse screw.
The vertical moving member 232 includes a second base 2321, a vertical moving screw (not shown in the drawing), a vertical moving motor 2322 and a vertical moving sliding seat 2323, where the second base 2321 is fixedly disposed on the horizontal moving sliding seat 2313, and the vertical moving screw is rotationally disposed on the second base 2321 and driven by the vertical moving motor 2322, and the vertical moving sliding seat 2323 is matched with the vertical moving screw.
The vertical moving member 233 comprises a third base 2331, a vertical guide rail 2332 and a vertical moving cylinder 2333, the third base 2331 is fixedly arranged on the vertical moving sliding seat 2323, the vertical guide rail 2332 and the vertical moving cylinder 2333 are both arranged on the third base 2331, and the first mounting seat 221 is arranged on the vertical guide rail 2332 and is driven to move along the vertical guide rail 2332 through the vertical moving cylinder 2333.
The front transfer mechanism 300 includes a front transfer table 310 and a front overturning assembly 320, where the front transfer table 310 and the front overturning assembly 320 are sequentially disposed behind the front conveying mechanism 100, and the first grabbing assembly 220 is enabled to transfer the liquid crystal screen 6 to be tested after the correction position onto the front transfer table 310 through the moving assembly 230. The front turnover assembly 320 comprises a turnover seat 321, a turnover motor 322, a turnover shaft 323, a second sucker 324 and an angle sensor 325, wherein the turnover seat 321 is arranged on the frame 1, the turnover motor 322 is arranged on the turnover seat 321, the turnover shaft 323 is rotationally arranged on the turnover seat 321 and is connected with a shaft of the turnover motor 322, the second sucker 324 and the angle sensor 325 are both connected on the turnover shaft 323 and rotate along with the turnover shaft 323, the angle sensor 325 is used for detecting the turnover angle of the turnover shaft 323, so that the second sucker 324 can turn in place, and the second sucker 324 is used for grabbing the liquid crystal screen 6 to be tested on the front middle turntable 310.
After the first image capturing component 210 captures an image of the liquid crystal screen 6 to be tested on the front conveying mechanism 100, the image is compared with standard position data stored in the control device, so that the control device generates a position moving signal to the first capturing component 220, the first capturing component 220 aligns the position of the liquid crystal screen 6 to be tested, in this embodiment, an existing module can be adopted as an image comparison module in the control device, and the obtained image and a pre-stored image can be compared. After the first grabbing component 220 grabs and aligns the position of the liquid crystal screen 6 to be tested, the control device controls the transverse moving component 231, the longitudinal moving component 232 and the vertical moving component 233 to work so as to realize the transverse, longitudinal and vertical movement of the first grabbing component 220 and transfer the liquid crystal screen 6 to be tested to the front middle rotary table 310.
As shown in fig. 2 and fig. 8 to fig. 10, the detection device 3 is disposed behind the loading device 2, and includes a transfer mechanism 400 and a detection mechanism 500, the transfer mechanism 400 can move along the longitudinal direction of the frame 1, the detection mechanism 500 is disposed above the transfer mechanism 400, and the detection mechanism 500 detects the liquid crystal display 6 to be detected.
The transfer mechanism 400 includes a fourth base 410, a transfer screw (not shown), a transfer motor 420, a transfer slide 430 and a transfer platform 440, wherein the fourth base 410 is longitudinally disposed on the frame 1, the transfer screw is rotatably disposed on the fourth base 410 and driven by the transfer motor 420, the transfer slide 430 is matched with the transfer screw, the transfer platform 440 is fixedly disposed on the transfer slide 430, and a first support 450 is disposed above the fourth base 410.
The detection mechanism 500 includes a fifth base 510, a detection screw (not shown in the figure), a detection motor 520, a detection slide 530, a second mounting seat 540, and a second image capturing assembly 550, where the fifth base 510 is transversely disposed on the first support 450, the detection screw is rotationally disposed on the fifth base 510 and driven by the detection motor 520, the detection slide 530 is matched with the detection screw, the second mounting seat 540 is fixedly disposed on the detection slide 530, and the second image capturing assembly 550 is disposed on the second mounting seat 540 and is movable to a position right above the transfer platform 440.
The second image capturing assembly 550 comprises a camera 551, a third mounting seat 552, a light source 553, a code reader 554 and a distance digital display 555, wherein the camera 551 is arranged on the second mounting seat 540, the camera 551 acquires image information of a liquid crystal screen on the transfer platform 440 and then is processed by a control device to identify good products and defective products, the third mounting seat 552 is of a frame structure, is fixedly arranged on the second mounting seat 540 and is positioned on the front side of the camera 551, the light source 553 and the code reader 554 are arranged on the third mounting seat 552, the distance digital display 555 is arranged on the second mounting seat 540, and the distance digital display 555 is used for detecting real-time distance between an object of the camera 551 and the liquid crystal screen.
In this embodiment, the number of the detecting devices 3 includes at least four, each detecting device 3 is sequentially arranged in parallel, and the material taking device 4 is arranged between the feeding device 2 and the discharging device 5 and is arranged along the transverse direction of the detecting device 3.
As shown in fig. 2 and 11 to 13, the material taking device 4 is disposed between the material loading device 2 and the material unloading device 5, and includes a material feeding and transferring mechanism 600 and a material unloading and transferring mechanism 700, wherein the material feeding and transferring mechanism 600 transfers the liquid crystal screen 6 to be tested on the front transferring mechanism 300 to the transferring mechanism 400, and the material unloading and transferring mechanism 700 transfers the liquid crystal screen detected by the detecting mechanism 500 on the transferring mechanism 400 to the material unloading device 5.
The feeding transfer mechanism 600 and the discharging transfer mechanism 700 each comprise a sixth base 671, a pulley assembly 672, a transfer motor 673, a transfer slide seat 674 and a second grabbing assembly 675, a second support 676 is arranged on the frame 1, the sixth base 671 is transversely arranged on the second support 676, the pulley assembly 672 is arranged in the sixth base 671 and driven by the transfer motor 673, and the transfer slide seat 674 is arranged on the sixth base 671 and driven by the pulley assembly 672 to move. The second grabbing component 675 is fixedly arranged on the transfer slide seat 674, the second grabbing component 675 of the feeding transfer mechanism 600 transfers the liquid crystal screen 6 to be tested on the front transfer mechanism 300 to the transfer mechanism 400, and the second grabbing component 675 of the discharging transfer mechanism 700 transfers the liquid crystal screen detected by the detection mechanism 500 on the transfer mechanism 400 to the blanking device 5.
The second grabbing component 675 comprises a screw rod module 6751, a fourth mounting seat 6752 and a third sucker 6753, wherein the screw rod module 6751 is fixedly arranged on the transfer slide seat 674, the fourth mounting seat 6752 is connected to the screw rod module 6751, the third sucker 6753 is arranged at the bottom of the fourth mounting seat 6752 and is used for grabbing the liquid crystal screen to be tested on the front transfer mechanism 300/the liquid crystal screen on the transfer mechanism 400. The installation frame 677 is arranged below the sixth base 671, the ion fan 678 is arranged on the installation frame 677, the ion fan 678 is arranged above each detection mechanism 500, static electricity on the liquid crystal screen is removed through the arrangement of the ion fan 678, and the generated static electricity is prevented from damaging the liquid crystal screen.
As shown in fig. 2, 7 and 14, the blanking device 5 is disposed behind the detecting device 3 and is used for conveying good liquid crystal panels and bad liquid crystal panels, the blanking device 5 includes a rear conveying mechanism 800 and a blanking mechanism 900, the rear conveying mechanism 800 includes a good conveying mechanism 810 and a good conveying mechanism 820, and the blanking mechanism 900 is disposed between the good conveying mechanism 810 and the good conveying mechanism 820. The blanking mechanism 900 includes a seventh base 910, a blanking screw (not shown in the figure), a blanking motor 920, a blanking sliding seat 930 and a rear overturning assembly 940, the seventh base 910 is longitudinally arranged on the frame 1, the blanking screw is rotationally arranged on the seventh base 910 and driven by the blanking motor 920, the blanking sliding seat 930 is matched with the blanking screw, the rear overturning assembly 940 is fixedly arranged on the blanking sliding seat 930, the structure of the rear overturning assembly 940 is consistent with that of the front overturning assembly 320, the defective liquid crystal screen transferred by the unloading transfer mechanism 700 is placed in the defective liquid crystal screen conveying mechanism 810, the defective liquid crystal screen transferred by the unloading transfer mechanism 700 is placed in the rear overturning assembly 940, and the defective liquid crystal screen is transferred to the defective liquid crystal screen conveying mechanism 820 by the rear overturning assembly 940.
The feeding device 2, the detecting device 3, the material taking device 4 and the discharging device 5 work through the control device respectively, and the feeding, position correction, transfer, detection and discharging operations of the liquid crystal display are realized through the control device.
The working process of the invention is as follows:
1. liquid crystal screen feeding and correcting position
The liquid crystal screen 6 to be tested is conveyed to the position right below the first image capturing component 210 through the front conveying mechanism 100, so that the first image capturing component 210 obtains the position of the liquid crystal screen 6 to be tested, and the first grabbing component 220 rotates the liquid crystal screen 6 to be tested by a proper angle according to the position so as to correct the feeding position of the liquid crystal screen 6 to be tested. Then, the first grabbing component 220 moves the lcd 6 to be tested onto the front turntable 310 through the moving component 230.
2. Taking out and detecting
The second grabbing component 675 of the feeding transfer mechanism 600 transversely moves onto the front turntable 310, grabs the liquid crystal screen 6 to be detected on the front turntable 310, and transfers the liquid crystal screen 6 to be detected onto each detection device 3 in sequence, so that the liquid crystal screen 6 to be detected is respectively loaded onto each transfer platform 440, and then the transfer platforms 440 longitudinally move to the second image capturing component 550 for image acquisition, so that detection of the liquid crystal screen is completed.
3. Discharging
The second grabbing component 675 of the unloading and transferring mechanism 700 transversely moves to each transferring platform 440, grabs the detected liquid crystal screen on each transferring platform 440, transfers the liquid crystal screen to the position above the defective product conveying mechanism 810, and places the defective liquid crystal screen directly on the defective product conveying mechanism 810 for subsequent processing. For good liquid crystal screens, the rear overturning assembly 940 firstly moves to the position right below the second grabbing assembly 675, grabs the liquid crystal screen on the second grabbing assembly 675, then moves to the good conveying mechanism 820, and is conveyed backwards on the good conveying mechanism 820 to be collected.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (9)
1. The automatic detection equipment for the AOI of the liquid crystal display circuit is characterized by comprising a frame, a control device, a feeding device, a detection device, a material taking device and a discharging device, wherein the feeding device, the detection device, the material taking device and the discharging device are arranged on the frame, and the automatic detection equipment comprises the following components:
the feeding device comprises a front conveying mechanism, a position correcting mechanism and a front transfer mechanism, wherein the front conveying mechanism is arranged on the frame and used for conveying the liquid crystal screen to be tested, and the position correcting mechanism is arranged above the front conveying mechanism and used for correcting the position of the liquid crystal screen to be tested and transferring the liquid crystal screen to be tested to the front transfer mechanism;
The detection device is arranged behind the feeding device and comprises a transfer mechanism and a detection mechanism, wherein the transfer mechanism can move along the longitudinal direction of the frame, the detection mechanism is arranged above the transfer mechanism, and the detection mechanism is used for detecting the liquid crystal screen to be detected;
The material taking device is arranged between the feeding device and the discharging device and comprises a feeding transfer mechanism and a discharging transfer mechanism, the feeding transfer mechanism transfers the liquid crystal screen to be tested on the front transfer mechanism to the transfer mechanism, and the discharging transfer mechanism transfers the liquid crystal screen detected by the detection mechanism on the transfer mechanism to the discharging device;
the blanking device is arranged behind the detection device and is used for conveying good liquid crystal screens and bad liquid crystal screens;
the feeding device, the detecting device, the material taking device and the discharging device work through the control device respectively;
the number of the detecting devices at least comprises four, the detecting devices are sequentially arranged in parallel, and the material taking device is arranged between the feeding device and the discharging device and is arranged along the transverse direction of the detecting devices.
2. The automatic detection device for AOI of LCD lines of claim 1, wherein the position correction mechanism comprises a first image capturing component, a first grabbing component and a moving component, wherein:
the first image capturing component is arranged right above the front conveying mechanism and is used for shooting images of the passing liquid crystal display to be tested;
The first grabbing component comprises a first mounting seat, a rotating piece and a first sucker, wherein the first mounting seat is positioned above the front conveying mechanism, the rotating piece is arranged on the first mounting seat, the first sucker is arranged on the rotating piece, and the first sucker is used for grabbing a liquid crystal screen to be detected and can drive the first sucker to rotate through the rotating piece;
The moving assembly comprises a traversing part, a longitudinally moving part and a vertically moving part, the traversing part is arranged on the side edge of the front conveying mechanism, the longitudinally moving part is arranged on the traversing part and moves transversely of the front conveying mechanism through the traversing part, the vertically moving part is arranged on the longitudinally moving part and moves longitudinally of the front conveying mechanism through the longitudinally moving part, and the first mounting seat is arranged on the vertically moving part and moves vertically of the front conveying mechanism through the vertically moving part.
3. An automatic inspection apparatus for a liquid crystal display line AOI according to claim 2, wherein:
The transverse moving piece comprises a first base, a transverse moving screw rod, a transverse moving motor and a transverse moving sliding seat, wherein the first base is arranged on the frame, the transverse moving screw rod is rotationally arranged on the first base and driven by the transverse moving motor, and the transverse moving sliding seat is matched with the transverse moving screw rod;
The longitudinal moving piece comprises a second base, a longitudinal moving screw rod, a longitudinal moving motor and a longitudinal moving sliding seat, wherein the second base is fixedly arranged on the transverse moving sliding seat, the longitudinal moving screw rod is rotationally arranged on the second base and driven by the longitudinal moving motor, and the longitudinal moving sliding seat is matched with the longitudinal moving screw rod;
The vertical moving part comprises a third base, a vertical guide rail and a vertical moving cylinder, the third base is fixedly arranged on a vertical moving sliding seat, the vertical guide rail and the vertical moving cylinder are both arranged on the third base, and the first mounting seat is arranged on the vertical guide rail and is driven to move along the vertical guide rail by the vertical moving cylinder;
The rotating piece comprises a servo motor and a connecting seat, wherein the servo motor is arranged on a first mounting seat, the connecting seat is arranged below the first mounting seat and is connected with a crankshaft of the servo motor, and the first sucker is fixedly arranged on the connecting seat.
4. The automatic detection device for the line AOI of the liquid crystal display screen of claim 2, wherein the front transfer mechanism comprises a front transfer table and a front turnover assembly, the front transfer table and the front turnover assembly are sequentially arranged behind the front conveying mechanism, the first grabbing assembly is used for transferring the liquid crystal display screen to be detected after the correction position to the front transfer table through the moving assembly, the front turnover assembly comprises a turnover table, a turnover motor, a turnover shaft, a second sucker and an angle sensor, the turnover table is arranged on the frame, the turnover motor is arranged on the turnover table, the turnover shaft is rotationally arranged on the turnover table and is connected with a shaft of the turnover motor, the second sucker and the angle sensor are both connected to the turnover shaft and rotate together with the turnover shaft, and the second sucker is used for grabbing the liquid crystal display screen to be detected on the front transfer table.
5. The automatic detection device for the line AOI of the liquid crystal display screen is characterized in that the transfer mechanism comprises a fourth base, a transfer screw rod, a transfer motor, a transfer sliding seat and a transfer table, the fourth base is longitudinally arranged on the frame, the transfer screw rod is rotationally arranged on the fourth base and driven by the transfer motor, the transfer sliding seat is matched with the transfer screw rod, the transfer table is fixedly arranged on the transfer sliding seat, a first support seat is arranged above the fourth base, the detection mechanism comprises a fifth base, a detection screw rod, a detection motor, a detection sliding seat, a second installation seat and a second image capturing assembly, the fifth base is transversely arranged on the first support seat, the detection screw rod is rotationally arranged on the fifth base and driven by the detection motor, the detection sliding seat is matched with the detection screw rod, the second installation seat is fixedly arranged on the detection sliding seat, and the second image capturing assembly is arranged on the second installation seat and can move to the position right above the transfer table.
6. The AOI automatic detection device for liquid crystal display lines of claim 5, wherein the second image capturing assembly comprises a camera, a third mounting seat, a light source, a code reader and a distance digital display, wherein the camera is arranged on the second mounting seat, the third mounting seat is of a frame-shaped structure, is fixedly arranged on the second mounting seat and is positioned on the front side of the camera, the light source and the code reader are arranged on the third mounting seat, and the distance digital display is arranged on the second mounting seat.
7. The automatic detection device for the AOI of the liquid crystal display circuit according to claim 1, wherein the feeding and discharging transfer mechanisms comprise a sixth base, a belt wheel assembly, a transfer motor, a transfer sliding seat and a second grabbing assembly, a second support is arranged on the frame, the sixth base is transversely arranged on the second support, the belt wheel assembly is arranged in the sixth base and driven by the transfer motor, the transfer sliding seat is arranged on the sixth base and driven by the belt wheel assembly to move, the second grabbing assembly is fixedly arranged on the transfer sliding seat, the second grabbing assembly of the feeding transfer mechanism transfers the liquid crystal display to be detected on the front transfer mechanism to the transfer mechanism, and the second grabbing assembly of the discharging transfer mechanism transfers the liquid crystal display detected by the detection mechanism on the transfer mechanism to the discharging device.
8. The AOI automatic detection device for the liquid crystal display circuit of claim 7, wherein the second grabbing component comprises a screw rod module, a fourth mounting seat and a third sucker, the screw rod module is fixedly arranged on the transfer sliding seat, the fourth mounting seat is connected to the screw rod module, the third sucker is arranged at the bottom of the fourth mounting seat and is used for grabbing the liquid crystal display to be detected on the front transfer mechanism/the liquid crystal display on the transfer mechanism, a mounting frame is arranged below the sixth base, an ion fan is arranged on the mounting frame, and the ion fan is positioned above each detection mechanism.
9. The automatic detection device for the line AOI of the liquid crystal display screen of claim 4, wherein the blanking device comprises a rear conveying mechanism and a blanking mechanism, the rear conveying mechanism comprises a defective conveying mechanism and a good conveying mechanism, the blanking mechanism is arranged between the defective conveying mechanism and the good conveying mechanism, the blanking mechanism comprises a seventh base, a blanking screw rod, a blanking motor, a blanking sliding seat and a rear overturning assembly, the seventh base is longitudinally arranged on the frame, the blanking screw rod is rotationally arranged on the seventh base and driven by the blanking motor, the blanking sliding seat is matched with the blanking screw rod, the rear overturning assembly is fixedly arranged on the blanking sliding seat, the structure of the rear overturning assembly is consistent with that of the front overturning assembly, the defective liquid crystal display screen conveyed by the blanking mechanism is arranged on the defective conveying mechanism, and the good liquid crystal display screen conveyed by the unloading mechanism is arranged on the rear overturning assembly and is conveyed to the good conveying mechanism by the rear overturning assembly.
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| CN111522158B (en) * | 2020-05-16 | 2024-08-16 | 苏州赫鲁森精工科技有限公司 | Liquid crystal display macroscopic defect inspection equipment |
| CN111879787B (en) * | 2020-07-31 | 2025-01-14 | 厦门福信光电集成有限公司 | Automatic detection equipment for LCD screen defects |
| CN112485196A (en) * | 2020-12-21 | 2021-03-12 | 旭东机械(昆山)有限公司 | Detection device and detection method for liquid crystal panel |
| CN112684617B (en) * | 2021-01-07 | 2025-01-07 | 厦门福信光电集成有限公司 | An automatic detection machine for LCD screen bonding foreign matter |
| CN112782879B (en) * | 2021-01-07 | 2024-03-05 | 厦门福信光电集成有限公司 | Automatic large-size liquid crystal display AOI inspection machine |
| CN113171993A (en) * | 2021-06-03 | 2021-07-27 | 厦门福信光电集成有限公司 | A new type of automatic optical inspection equipment for the appearance of display panels |
| CN114226264A (en) * | 2021-11-24 | 2022-03-25 | 富鼎电子科技(嘉善)有限公司 | Material testing equipment |
| CN116300166A (en) * | 2023-05-17 | 2023-06-23 | 成都思越智能装备股份有限公司 | Multi-station detection mechanism and detection device for LCD screen |
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| CN108169936B (en) * | 2017-12-29 | 2023-10-17 | 无锡华氏恒辉精密装备科技有限公司 | Large-scale equipment |
| CN108594482B (en) * | 2018-02-06 | 2021-01-05 | 宁波图锐自动化设备有限公司 | Liquid crystal display detection device |
| CN108594494B (en) * | 2018-06-14 | 2023-08-29 | 广东速美达自动化股份有限公司 | Automatic detection assembly line without FPC (flexible printed circuit) liquid crystal display |
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