CN105783813B - The detection method of LCD screen rear panel dimension automatic detection device - Google Patents
The detection method of LCD screen rear panel dimension automatic detection device Download PDFInfo
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- CN105783813B CN105783813B CN201610303334.5A CN201610303334A CN105783813B CN 105783813 B CN105783813 B CN 105783813B CN 201610303334 A CN201610303334 A CN 201610303334A CN 105783813 B CN105783813 B CN 105783813B
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- lcd screen
- rear panel
- cylinder
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 claims abstract description 34
- 230000002950 deficient Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract 2
- 239000011159 matrix material Substances 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses the detection methods of LCD screen rear panel dimension automatic detection device.Board size manual detection efficiency is low behind LCD screen, and product quality can not ensure.Apparatus of the present invention include vision measurement system, endless belt conveyer, limitting casing, station, the first single pole cylinder, PLC control panels, the second single pole cylinder, certified products storage bin and defective work storage bin.The step of the method for the present invention：Two workers are located at certified products storage bin and the corresponding station of defective work storage bin respectively, and LCD screen rear panel is positioned in the limitting casing on station, open endless belt conveyer, LCD screen rear panel is allowed to be rotated with endless belt conveyer；Qualified products and substandard product are detected, and in automatic sorting to certified products storage bin and defective work storage bin by vision measurement system automatically.The present invention can detect the size of LCD screen rear panel automatically, and automatic sorting goes out qualified products and substandard product, greatly improve the efficiency of product size detection.
Description
Technical field
The invention belongs to automatic measurement technique fields, and in particular to a kind of LCD screen rear panel dimension automatic detection device
Detection method.
Background technology
With the increase of various consumer electronics product demands, industrial scale constantly expands, using artificial detection as
Main part to be processed size detection is gradually fallen behind, and it is that automation based on Visual identification technology is quick to replace
Detection technique.Artificial detection often inefficiency, the quality of product can not be protected, and automatic detection can not only save
Cost improves efficiency, and the precision detected is also much higher than artificial detection precision.
Invention content
In view of the deficiencies of the prior art, it is an object of the present invention to provide board sizes behind a kind of LCD screen to detect dress automatically
The detection method put can detect the size of LCD screen rear panel automatically, and automatic sorting goes out qualified products and unqualified
Product substantially increases the efficiency of product size detection, has saved cost.
The LCD screen rear panel dimension automatic detection device that the present invention uses, including vision measurement system, display screen,
Endless belt conveyer, first light source, second light source, dot matrix camera, third light source, the 4th light source, position sensor, limitting casing,
Station, the first single pole cylinder, PLC control panels, the second single pole cylinder, certified products storage bin and defective work storage bin；Described
Endless belt conveyer is uniformly distributed along the circumference 6~10 stations of setting；Cross chute is fixed on station, limit is fixed in cross chute
Position frame, limitting casing is interior to place LCD screen rear panel；Hydraulic cylinder resettlement groove there are four being opened up on the limitting casing, each hydraulic pressure
The end connection corresponding with cross chute of the slot bottom of cylinder resettlement groove；First hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder
With the cylinder body of the 4th hydraulic cylinder sliding pair is formed with cross chute；First light source, second light source, third light source, the 4th light
Source and dot matrix camera are arranged above endless belt conveyer, and in the areal extent of same station；First light source,
The illumination range of two light sources, third light source and the 4th light source is more than station area；Position sensor is used for detection station position, and
The signal detected is transmitted to vision measurement system；Vision measurement system control dot matrix camera acquisition LCD screen rear panel
Image will compare after image procossing with required size, obtain the testing result of acceptance or rejection, and detection is tied
Fruit shows on the display screen；The PLC control panels are connect with vision measurement system, for controlling the first single pole cylinder, the
The movement of two single pole cylinders, first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder.First single pole cylinder and
Defective work storage bin be located at endless belt conveyer it is same in the radial direction, and set up separately in the medial and lateral of endless belt conveyer；Second
Single pole cylinder and certified products storage bin be located at endless belt conveyer it is same in the radial direction, and set up separately in endless belt conveyer,
Outside.
The vision measurement system includes signal transmitting apparatus and image processing unit, the image of dot matrix camera acquisition
Image processing unit is transferred to by signal transmitting apparatus, image processing unit after image procossing and required size into
Row comparison, shows product size on the display screen.
The detection method of the LCD screen rear panel dimension automatic detection device, is as follows：
Step 1, two workers are located at certified products storage bin and the corresponding station of defective work storage bin respectively, by liquid crystal
Screen rear panel is positioned in the limitting casing on station, if the appearance and size of LCD screen rear panel and the appearance and size of limitting casing
Unanimously, then do not start first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder, otherwise start first hydraulic cylinder,
Second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder, and slide first hydraulic cylinder, second hydraulic cylinder, the along cross chute
Three hydraulic cylinders and the 4th hydraulic cylinder limit the hydraulic stem of first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder
LCD screen rear panel processed moves on limitting casing；Endless belt conveyer is opened, allows station and LCD screen rear panel with annular
Conveyer belt rotates；
Step 2, when position sensor detects station, by the signal transmitting apparatus of vision measurement system to image at
It manages unit and sends instruction, then image processing unit control dot matrix camera collection image, image is by image processing unit
It is compared after reason with required size, obtains the testing result of acceptance or rejection, and testing result is included showing
On screen；
Step 3, when detected product is defective work, vision measurement system is according to the speed of service of endless belt conveyer
At the time of calculating detected product arrival defective work storage bin position, and PLC is given to control by signal transmitting apparatus at the moment
Making sheet sends out signal, by the liquid of PLC control panels control first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder
Compression bar is withdrawn, and controls the hydraulic stem stretching of the first single pole cylinder that substandard product is shifted onto in substandard product storage bin.Such as
Fruit detected product size qualification, vision measurement system calculate detected product according to the speed of service of endless belt conveyer and reach conjunction
At the time of lattice product storage bin, and signal is sent out to PLC control panels by signal transmitting apparatus at the moment, by PLC control panel controls
First hydraulic cylinder processed, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder hydraulic stem withdraw, and control the second single pole cylinder
Hydraulic stem stretching qualified products are shifted onto in qualified products storage bin.
The station is the rectangle of long 80~100cm, wide 60~80cm.
The beneficial effects of the invention are as follows：
1. the vision measurement system that the present invention uses, measurement accuracy can reach 0.01mm, and easy to operate, only need to be tested
It surveys LCD screen rear panel to be put into the limitting casing on station, detects qualified products and unqualified automatically by vision detection system
Product.
2. mainly with calliper, there is measurement accuracy is low, the time is long, efficiency is low etc. in traditional artificial detection.
The present invention realizes automatic measurement compared to traditional manual detection mode from measurement method, substantially increases the one of detection data
Cause property and repeatability eliminate human factor to the tremendous influence of measurement result namely improve the accuracy of detection data.
3. realize that multistation measures, and effectively increases detection efficiency from measurement efficiency, it can be preferably close to modern enterprise
To the measurement request of board size behind LCD screen.
4. the hydraulic stem using hydraulic cylinder is defined the location of workpiece, and the position of hydraulic cylinder can change, can be right
Various sizes of workpiece is detected.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of station in the present invention.
In figure：1st, vision measurement system, 2, display screen, 3, endless belt conveyer, 4, first light source, 5, second light source, 6,
Dot matrix camera, 7, third light source, the 8, the 4th light source, 9, position sensor, 10, LCD screen rear panel, 11, limitting casing, 12,
Station, the 13, first single pole cylinder, 14, PLC control panels, the 15, second single pole cylinder, 16, certified products storage bin, 17, defective work
Storage bin, 18, first hydraulic cylinder, 19, second hydraulic cylinder, 20, cross chute, 21, third hydraulic cylinder, the 22, the 4th hydraulic cylinder.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described.
As illustrated in fig. 1 and 2, LCD screen rear panel dimension automatic detection device, including vision measurement system 1, display screen
Curtain 2, endless belt conveyer 3, first light source 4, second light source 5, dot matrix camera 6, third light source 7, the 4th light source 8, position sensing
Device 9, limitting casing 11, station 12, the first single pole cylinder 13, PLC control panels 14, the second single pole cylinder 15, certified products storage bin 16
With defective work storage bin 17；Endless belt conveyer 3, which is uniformly distributed along the circumference, sets 6 stations 12；Station 12 is long 80cm, width 60cm
Rectangle；Cross chute 20 is fixed on station 12, limitting casing 11 is fixed in cross chute 20, liquid is placed in limitting casing 11
Brilliant screen rear panel 10；Hydraulic cylinder resettlement groove there are four being opened up on limitting casing 11, the slot bottom and cross of each hydraulic cylinder resettlement groove
The 20 corresponding end connections of shape sliding slot；First hydraulic cylinder 18, second hydraulic cylinder 19,21 and the 4th hydraulic cylinder of third hydraulic cylinder
22 cylinder body forms sliding pair with cross chute 20, can be slided in cross chute 20.First light source 4, second light source
5th, third light source 7, the 4th light source 8 and dot matrix camera 6 are arranged at 3 top of endless belt conveyer, and positioned at same station 12
Areal extent in；First light source 4, second light source 5,7 and the 4th light source 8 of third light source illumination range be more than 12 face of station
Product；Dot matrix camera 6 can be focused according to the distance of camera lens to workpiece 12；Position sensor 9 is used for detection station 12
It puts, and the signal detected is transmitted to vision measurement system 1, vision measurement system 1 controls dot matrix camera 6 to acquire LCD screen
The image of rear panel 10 will compare with required size after image procossing, obtain the testing result of acceptance or rejection,
And testing result is included on display screen 2；PLC control panels 14 are connect with vision measurement system 1, for controlling the first single pole
Cylinder 13, the second single pole cylinder 15, first hydraulic cylinder 18, second hydraulic cylinder 19, third hydraulic cylinder 21 and the 4th hydraulic cylinder 22
Movement.First single pole cylinder 13 and defective work storage bin 17 be located at endless belt conveyer 3 it is same in the radial direction, and set up separately
The medial and lateral of endless belt conveyer 3；Second single pole cylinder 15 and certified products storage bin 16 are located at the same radial direction of endless belt conveyer 3
On direction, and set up separately in the medial and lateral of endless belt conveyer 3.
The detection method of the LCD screen rear panel dimension automatic detection device, is as follows：
Step 1, two workers are located at 17 corresponding station of certified products storage bin 16 and defective work storage bin respectively, will
LCD screen rear panel 10 is positioned in the limitting casing 11 on station 12, if the appearance and size of LCD screen rear panel 10 and limiting
The appearance and size of frame 11 is consistent, then does not start first hydraulic cylinder 18, second hydraulic cylinder 19,21 and the 4th hydraulic cylinder of third hydraulic cylinder
22, otherwise start first hydraulic cylinder 18, second hydraulic cylinder 19,21 and the 4th hydraulic cylinder 22 of third hydraulic cylinder, and slide along cross
Slot 20 slide first hydraulic cylinder 18, second hydraulic cylinder 19,21 and the 4th hydraulic cylinder 22 of third hydraulic cylinder, make first hydraulic cylinder 18,
Second hydraulic cylinder 19,21 and the 4th hydraulic cylinder 22 of third hydraulic cylinder hydraulic stem limit LCD screen rear panel 10 in limitting casing 11
Upper movement；Endless belt conveyer 3 is opened, allows station 12 and LCD screen rear panel 12 as endless belt conveyer 3 rotates；
Step 2, when position sensor 8 detects station 12, by the signal transmitting apparatus of vision measurement system 1 to figure
It is instructed as processing unit is sent, then image processing unit control dot matrix camera 6 acquires image, and image passes through image procossing list
It is compared after member processing with required size, obtains the testing result of acceptance or rejection, and testing result is included
It shows on screen 2；
Step 3, when detected product is defective work, vision measurement system 1 is according to the operation speed of endless belt conveyer 3
At the time of degree calculates detected product arrival defective work 17 position of storage bin, and given at the moment by signal transmitting apparatus
PLC control panels 14 send out signal, and first hydraulic cylinder 18, second hydraulic cylinder 19,21 and of third hydraulic cylinder are controlled by PLC control panels 14
The hydraulic stem of 4th hydraulic cylinder 22 is withdrawn, and is controlled the hydraulic stem stretching of the first single pole cylinder 13 that substandard product is shifted onto and do not conformed to
In lattice product storage bin 17.If detected product size qualification, vision measurement system 1 is fast according to the operation of endless belt conveyer 3
At the time of degree calculates detected product arrival certified products storage bin 16, and PLC is given to control by signal transmitting apparatus at the moment
Plate 14 sends out signal, and first hydraulic cylinder 18, second hydraulic cylinder 19,21 and the 4th liquid of third hydraulic cylinder are controlled by PLC control panels 14
The hydraulic stem of cylinder pressure 22 is withdrawn, and the hydraulic stem of the second single pole cylinder 15 is controlled to stretch out, qualified products are shifted onto qualified products storage
In case 16.
The present invention is reduced manual operation, is improved inspection using vision measurement system, automatic detection, automatic sorting product
Efficiency is surveyed, can be classified automatically to certified products and defective work, accuracy of detection is high, will not generate and obscure, and has preferable market
Prospect.
Set of system provided by the present invention is described in detail above, for those of ordinary skill in the art,
Design according to the present invention, in specific embodiments and applications there will be changes.In conclusion in this specification
Hold and should not be construed as limitation to this set system, it is all according to any change made the present invention relates to thought all in patent of the present invention
Within protection domain.
Claims (2)
1. the detection method of LCD screen rear panel dimension automatic detection device, board size is examined automatically behind the LCD screen of use
Device is surveyed, including vision measurement system, display screen, endless belt conveyer, first light source, second light source, dot matrix camera, third
Light source, the 4th light source, position sensor, limitting casing, station, the first single pole cylinder, PLC control panels, the second single pole cylinder, qualification
Product storage bin and defective work storage bin, it is characterised in that：The endless belt conveyer is uniformly distributed along the circumference 6~10 works of setting
Position；Cross chute is fixed on station, limitting casing is fixed in cross chute, LCD screen rear panel is placed in limitting casing；
Hydraulic cylinder resettlement groove there are four being opened up on the limitting casing, the slot bottom of each hydraulic cylinder resettlement groove are corresponding with cross chute
One end connection；First hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder cylinder body and cross chute
Form sliding pair；First light source, second light source, third light source, the 4th light source and dot matrix camera are arranged at endless belt conveyer
Top, and in the areal extent of same station；The illumination of first light source, second light source, third light source and the 4th light source
Range is more than station area；Position sensor is used for detection station position, and the signal detected is transmitted to vision measurement system；
The image of vision measurement system control dot matrix camera acquisition LCD screen rear panel, will be after image procossing and required size
It is compared, obtains the testing result of acceptance or rejection, and testing result is shown on the display screen；The PLC controls
Making sheet is connect with vision measurement system, for controlling the first single pole cylinder, the second single pole cylinder, first hydraulic cylinder, the second hydraulic pressure
The movement of cylinder, third hydraulic cylinder and the 4th hydraulic cylinder；First single pole cylinder and defective work storage bin are located at endless belt conveyer
It is same in the radial direction, and set up separately in the medial and lateral of endless belt conveyer；Second single pole cylinder and certified products storage bin are located at annular
Conveyer belt it is same in the radial direction, and set up separately in the medial and lateral of endless belt conveyer；
The vision measurement system includes signal transmitting apparatus and image processing unit, and the image of dot matrix camera acquisition passes through
Signal transmitting apparatus is transferred to image processing unit, and image processing unit carries out pair after image procossing with required size
Than showing product size on the display screen；
This method is as follows：
Step 1, two workers are located at certified products storage bin and the corresponding station of defective work storage bin respectively, by LCD screen
Rear panel is positioned in the limitting casing on station, if the appearance and size of LCD screen rear panel and the appearance and size of limitting casing one
It causes, does not then start first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder, otherwise start first hydraulic cylinder, the
Two hydraulic cylinders, third hydraulic cylinder and the 4th hydraulic cylinder, and slide first hydraulic cylinder, second hydraulic cylinder, third along cross chute
Hydraulic cylinder and the 4th hydraulic cylinder limit the hydraulic stem of first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder
LCD screen rear panel moves in limitting casing；Endless belt conveyer is opened, allows station and LCD screen rear panel as annular passes
Band is sent to rotate；
Step 2, when position sensor detects station, give image procossing list by the signal transmitting apparatus of vision measurement system
Member sends instruction, then image processing unit control dot matrix camera collection image, and image is after image processing unit is handled
It is compared with required size, obtains the testing result of acceptance or rejection, and testing result is included in display screen
On；
Step 3, when detected product is defective work, vision measurement system is calculated according to the speed of service of endless belt conveyer
At the time of detected product reaches defective work storage bin position, and PLC control panels are given by signal transmitting apparatus at the moment
Signal is sent out, by the hydraulic stem of PLC control panels control first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder
It withdraws, and controls the hydraulic stem stretching of the first single pole cylinder that substandard product is shifted onto in substandard product storage bin；If by
It is qualified to detect product size, vision measurement system calculates detected product according to the speed of service of endless belt conveyer and reaches certified products
At the time of storage bin, and signal is sent out to PLC control panels by signal transmitting apparatus at the moment, by PLC control panels control the
One hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder and the 4th hydraulic cylinder hydraulic stem withdraw, and control the liquid of the second single pole cylinder
Compression bar stretching is shifted qualified products in qualified products storage bin onto.
2. the detection method of LCD screen rear panel dimension automatic detection device according to claim 1, it is characterised in that：
The station is the rectangle of long 80~100cm, wide 60~80cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610303334.5A CN105783813B (en) | 2016-05-09 | 2016-05-09 | The detection method of LCD screen rear panel dimension automatic detection device |
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| CN201610303334.5A CN105783813B (en) | 2016-05-09 | 2016-05-09 | The detection method of LCD screen rear panel dimension automatic detection device |
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| CN105783813B true CN105783813B (en) | 2018-06-26 |
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| CN108144869A (en) * | 2017-12-14 | 2018-06-12 | 格力电器（武汉）有限公司 | Air conditioner panel appearance detection device and method |
| CN109031712B (en) * | 2018-07-17 | 2024-04-05 | 武汉精测电子集团股份有限公司 | Universal electronic screen positioning carrier |
| CN109387961B (en) * | 2018-11-07 | 2020-11-24 | 惠科股份有限公司 | Detection method and detection equipment for display panel |
| CN110586492B (en) * | 2019-09-18 | 2022-04-19 | 苏州精濑光电有限公司 | Display panel detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101444779A (en) * | 2008-12-26 | 2009-06-03 | 上海爱普生磁性器件有限公司 | Magnet size automatic measuring and sorting unit |
| CN102107187A (en) * | 2009-12-24 | 2011-06-29 | 大连水产学院 | Image identifying and sorting device |
| CN102866166B (en) * | 2012-09-20 | 2017-10-13 | 天津嘉乐惠电子科技有限公司 | Automatic optical detecting system and method |
| CN203030544U (en) * | 2012-12-13 | 2013-07-03 | 上海三环弹簧有限公司 | Spring length detecting machine |
| CN204367601U (en) * | 2015-01-02 | 2015-06-03 | 常敏 | The base of a kind of auxiliary occurrences in human life, financial affairs archive bookbinding |
| CN204369122U (en) * | 2015-01-04 | 2015-06-03 | 中冶建工集团有限公司 | Buttress device beaten by stirrup |
| CN205785130U (en) * | 2016-05-09 | 2016-12-07 | 杭州电子科技大学 | LCD screen rear board dimension automatic detection device |
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