CN103743975A - Flexible printed circuit board automatic testing equipment and flexible printed circuit board automatic testing method - Google Patents
Flexible printed circuit board automatic testing equipment and flexible printed circuit board automatic testing method Download PDFInfo
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- CN103743975A CN103743975A CN201310743738.2A CN201310743738A CN103743975A CN 103743975 A CN103743975 A CN 103743975A CN 201310743738 A CN201310743738 A CN 201310743738A CN 103743975 A CN103743975 A CN 103743975A
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Abstract
The invention aims at providing flexible printed circuit board automatic testing equipment and a flexible printed circuit board automatic testing method, which are used for solving the problems of low automation degree and low efficiency of flexible printed circuit board testing of the existing consumption type electronic assembly line. The flexible printed circuit board automatic testing equipment comprises a machine frame, a plurality of turnover trays, a feeding device, a testing device, an outputting device, a turnover tray revolving device, and a charging and discharging device, wherein the feeding device is used for placing a to-be-tested flexible printed circuit board on the turnover trays, the testing device is used for detecting the flexible printed circuit board, the outputting device is used for collecting the tested flexible printed circuit board, the turnover tray revolving device is arranged on the machine frame, and is arranged among the feeding device, the testing device and the outputting device, and the turnover trays revolve among the feeding device, the testing device and the outputting device. The flexible printed circuit board automatic testing equipment and the flexible printed circuit board automatic testing method, provided by the embodiment of the invention can be applied to the field of testing of flexible printed circuit boards.
Description
Technical field
The present invention relates to soft board technical field of measurement and test, relate in particular to a kind of soft board testing apparatus and carry out the method for soft board automatic test.
Background technology
In consumer electronics assembly line, soft board test is the link that automaticity is the weakest, test is all manual that complete or do not test by operator, if we remove to observe a production line, we can see and take the station test station often that operator is maximum.
The not high reason of soft board test automation degree, mainly comprises:
1) test position fix precision is very high, and some soft board test position fix precision is very high, and it is very large that equipment completes difficulty.Operator flexibility is very strong comparatively speaking, can fine adaptive testing location requirement.
2) life cycle of the product is very short, causes equipment investment reciprocation cycle too short, is difficult to realize test automation by high-accuracy, full automatic scheme.
3) large in batches, FU time output requires very high, and the production capacity of equipment and stability requirement are very high.
Due to three above-mentioned main causes, a production line needs a lot of employees and measurement jig to guarantee output, if but test with unit, cost of investment is very high, and workshop unit area output also can be very little.
Summary of the invention
One of object of the present invention is to provide a kind of soft board ATE (automatic test equipment), low to solve on consumer electronics assembly line soft board test automation degree, inefficient problem.
For achieving the above object, by the following technical solutions, soft board ATE (automatic test equipment), comprising in the present invention:
Frame; Multiple turnover pallets; Feeding device, is placed on soft board to be measured on described turnover pallet; Proving installation, carries out soft board detection; Drawing mechanism, collects the soft board of having tested; Turnover pallet slewing equipment, is arranged in described frame, is located between described feeding device, proving installation and described drawing mechanism, and described turnover pallet is turned round between described feeding device, proving installation and described drawing mechanism; Handling equipment, the soft board that test is completed is put to the turnover pallet on turnover pallet slewing equipment, and the turnover pallet by soft board to be measured from turnover pallet slewing equipment is put to proving installation.
Specifically, described turnover pallet is provided with and does not survey soft board placement cave, qualified soft board places cave and defective soft board is placed cave, and the described soft board of not surveying is placed the double described defective soft board placement cave of doing, cave.
Concrete, described proving installation comprises measurement jig, described measurement jig comprises lower and upper measuring head, described lower is fixedly mounted in described frame, described upper measuring head is connected with measuring head translating device and measuring head jacking gear, described frame is provided with the first test station and the second test station, in described the first test station and described the second test station, be respectively equipped with two measurement jigs, described turnover pallet is provided with two and does not survey soft board placement cave and two qualified soft boards placement caves, described lower is provided with measurement jig counterdie, described upper measuring head comprises mold mounting plate and measurement jig patrix, described measurement jig patrix is arranged on described upper mold mounting plate below, described measurement jig patrix is provided with test module, described measurement jig counterdie is provided with lower test module, the test probe being connected with described upper test module is installed on described measurement jig patrix, the test probe seat that can peg graft with described test probe is installed on described measurement jig counterdie, described test probe seat is connected with described lower test module, described upper test module is provided with the test pin mark for being connected with pin mark on soft board, described measurement jig patrix is provided with register pin, described measurement jig counterdie is provided with the pilot hole coordinating with described register pin, the lower surface of described upper mold mounting plate is provided with the support column that connects described measurement jig patrix, described measuring head translating device comprises measuring head flat-removing air cyclinder, described measuring head jacking gear comprises measuring head lift cylinder, described measurement jig counterdie is provided with soft board locating device, described soft board locating device comprises the multiple locating pins that surround soft board foreign steamer profile.
Concrete, described feeding device comprises pallet feeding device and empty pallet gathering-device, described pallet feeding device comprises the first feed tray seat of placing the feed pallet of filling soft board to be measured, described feed pallet stacks and puts on described the first feed tray seat upper strata, described empty pallet gathering-device comprises the second feed tray seat of placing empty feed pallet, between described the first feed tray seat and described the second feed tray seat and described frame, be equipped with feed tray seat apparatus for automatically lifting, in described frame, be provided with empty feed pallet is carried to the feed pallet conveying device the second feed tray seat from described the first feed tray seat, feed tray transfer from the first feed tray seat is also installed by soft board to be measured to the soft board Feeder Manipulator of turnover pallet in described frame, described feed tray seat apparatus for automatically lifting comprises the feed tray seat guidepost being arranged in described frame, on described the first feed tray seat and described the second feed tray seat, be respectively equipped with the pilot hole coordinating with described feed tray seat guidepost, feed tray seat leading screw is also installed in described frame, on described the first feed tray seat and described the second feed tray seat, the screw coordinating with described feed tray seat leading screw is installed, described feed tray seat leading screw is connected with device of rotation driving, described feed tray seat apparatus for automatically lifting also comprises automatic lifting controller, described automatic lifting controller comprises rack-mounted upper limit sensor and lower limit sensor, described automatic lifting controller also comprises feed pallet photoelectric sensor, described pilot hole is four, four described pilot holes face limit along two of described feed pallet and distribute, in described frame, be provided with and four four feed tray seat guideposts that described pilot holes difference is corresponding, described feed pallet conveying device comprises carrying cylinder and sucker jacking gear, described carrying cylinder drives described sucker jacking gear to move back and forth between described pallet feeding device and empty pallet gathering-device, feed pallet Acetabula device is installed on described sucker jacking gear.
Concrete, described drawing mechanism comprises pallet material collecting device, rewinding completes pallet gathering-device and unacceptable product recycling box, described pallet material collecting device comprises the first rewinding tray seat of placing empty rewinding pallet, described rewinding pallet stacks and puts on described the first rewinding tray seat upper strata, described rewinding completes pallet gathering-device and comprises the second rewinding tray seat of placing the rewinding pallet of filling soft board, between described the first rewinding tray seat and described the second rewinding tray seat and described frame, be equipped with rewinding tray seat apparatus for automatically lifting, in described frame, be provided with the rewinding pallet of filling soft board is carried to the rewinding pallet conveying device the second rewinding tray seat from described the first rewinding tray seat, in described frame, be also provided with soft board is transferred to rewinding pallet the first rewinding tray seat or the soft board discharging mechanical arm of unacceptable product recycling box from described turnover pallet, described soft board discharging mechanical arm is connected with soft board discharging manipulator controller, described soft board discharging manipulator controller comprises the Fibre Optical Sensor that whether has defective soft board in detection turnover pallet, described rewinding tray seat apparatus for automatically lifting comprises the rewinding tray seat guidepost being arranged in described frame, on described the first rewinding tray seat and described the second rewinding tray seat, be respectively equipped with the pilot hole coordinating with described rewinding tray seat guidepost, rewinding tray seat leading screw is also installed in described frame, on described the first rewinding tray seat and described the second rewinding tray seat, the screw coordinating with described rewinding tray seat leading screw is installed, described rewinding tray seat leading screw is connected with device of rotation driving, described rewinding tray seat apparatus for automatically lifting also comprises automatic lifting controller, described automatic lifting controller comprises rack-mounted upper limit sensor and lower limit sensor, described automatic lifting controller also comprises rewinding pallet photoelectric sensor, described pilot hole is four, four described pilot holes face limit along two of described rewinding pallet and distribute, in described frame, be provided with and four four rewinding tray seat guideposts that described pilot holes difference is corresponding, described rewinding pallet conveying device comprises carrying cylinder and sucker jacking gear, described carrying cylinder drives described sucker jacking gear to complete between pallet gathering-device and move back and forth in described pallet material collecting device and rewinding, and rewinding pallet Acetabula device is installed on described sucker jacking gear.
Concrete, described turnover pallet slewing equipment comprises revolution conveying belt, described revolution conveying belt is provided with first turnover pallet locating device and the second turnover pallet locating device corresponding with the first test station and the second test station difference, the all rotation control apparatus that make described turnover pallet interval be delivered to described the first turnover pallet locating device and the second turnover pallet locating device are also installed on described revolution conveying belt, on described revolution conveying belt, be also provided with the feed station corresponding with described feeding device and the discharging station corresponding with described drawing mechanism, described feed station is provided with turnover pallet feed locating device, described discharging station is provided with turnover pallet discharging locating device, described revolution conveying belt comprises the first conveying belt of close described proving installation and the second conveying belt away from described proving installation, between described the first conveying belt and the two ends of described the second conveying belt, be provided with turnover pallet pusher, described the first conveying belt and described the second conveying belt include belt erecting frame, on described belt erecting frame, turnover pallet gathering sill is installed, two parallel and spaced conveying belt bodies are installed in described turnover pallet gathering sill, described the first turnover pallet locating device and described the second turnover pallet locating device include two pallet limit portion wedges, described in two, pallet limit portion wedge is fixedly mounted on and is positioned on the described belt erecting frame of carrying belt body both sides described in two, described in two, pallet limit portion wedge has the locating surface of the relative both sides upper surface that is positioned at described turnover pallet, described the first turnover pallet locating device and described the second turnover pallet locating device also comprise respectively at the turnover pallet jacking block of carrying described in two between belt body, described turnover pallet jacking block is connected with jacking block lift cylinder, described the first turnover pallet locating device and described the second turnover pallet locating device also comprise respectively at the turnover pallet position block of carrying described in two between belt body, described turnover pallet position block is connected with block lift cylinder, described turnover pallet position block is positioned at the exit side of described the first turnover pallet locating device and the exit side of the second turnover pallet locating device, described turnover pallet feed locating device comprises the port block being located on the port that described turnover pallet gathering sill closes on described feeding device, described turnover pallet discharging locating device comprises the port block being located on the port that described turnover pallet gathering sill closes on described drawing mechanism, described all rotation control apparatus comprise be arranged on the first conveying belt two described in carry at least two between belt body turnover to control block, described turnover control block is connected with turnover and controls block jacking gear, distance described in adjacent two between turnover control block is greater than the width of a described turnover pallet, described turnover pallet pusher comprises the push pedal that described turnover pallet is pushed along described gathering sill Width, described push pedal is connected with push pedal cylinder, described turnover pallet pusher also comprises that being located at the turnover pallet in pallet gathering sill inside slot edge described in two crosses mouth, the described turnover pallet gathering sill of the feed side of described turnover pallet pusher is provided with propelling movement feed control device, described propelling movement feed control device comprises that the turnover pallet being located on described turnover pallet gathering sill cell wall holds out against cylinder, described turnover pallet holds out against cylinder described turnover pallet is held out against on the cell wall of described turnover pallet gathering sill.
Concrete, described handling equipment comprises the soft board test handler that is located at respectively the first test station and the second test station, described soft board test handler is connected with soft board test handler control device, the soft board test handler vision positioning system corresponding with the first turnover pallet locating device and the second turnover pallet locating device difference is installed in described frame, described soft board test handler vision positioning system determine soft board at the first turnover pallet locating device and the second turnover pallet locating device place position numerical value and the amount of deflection with respect to measurement jig, described in the control of described soft board test handler control device, soft board test handler is adjusted the position of soft board on measurement jig counterdie according to described position numerical value and the amount of deflection, described soft board Feeder Manipulator vision positioning system comprises camera and light source, described camera is connected with data collecting plate card, described data collecting plate card is connected with computing machine, described computing machine is connected with described soft board test handler control device, described light source is radiated at the first turnover pallet locating device and the second turnover pallet locating device, described soft board test handler comprises X-axis guide rail, on described X-axis guide rail, X-axis slide block is installed, on described X-axis slide block, Y-axis guide rail is installed, on described Y-axis guide rail, Y-axis slide block is installed, on described Y-axis slide block, motor is installed, soft board carrying head is installed on the output shaft of described motor, described soft board carrying head comprises profiling sucker, described profiling sucker is arranged on sucker lift cylinder, described sucker lift cylinder is connected with the output shaft of described motor, described light source is located at the periphery of described camera lens.
Two of object of the present invention is to provide the soft board automated testing method of above-mentioned soft board ATE (automatic test equipment).
For achieving the above object, the present invention by the following technical solutions, described turnover pallet slewing equipment drives described turnover pallet to pass through successively described feeding device, described proving installation, described drawing mechanism, at described turnover pallet slewing equipment, drive in the rotating process of described turnover pallet, complete successively soft board feed step to be measured, soft board testing procedure and qualified soft board and defective soft board classification discharging step.
Concrete, in described qualified soft board and defective soft board classification discharging step, soft board test handler is put into qualified soft board on the qualified soft board placement cave of turnover pallet, and underproof soft board is placed into the not survey soft board of turnover pallet and places on cave.
Concrete, in two measurement jig alternations of the first test station described in described soft board testing procedure and described the second test station, when a described measurement jig carries out soft board test, described in another, measurement jig has been tested the blanking of soft board and the material loading of soft board to be measured.
A kind of soft board ATE (automatic test equipment) and soft board automated testing method that the embodiment of the present invention provides, have advantages of flexible strong, soft board within the scope of certain size and measuring accuracy, all can complete test jobs, thread-changing only needs to make corresponding measurement jig and supporting turnover pallet, feed pallet and rewinding pallet; And automaticity is high, production capacity is strong, can maximizes and save manually.Can also and survey soft board separately by soft board to be measured, eliminate and surveyed soft board and do not survey the possibility that soft board is obscured, improve reliability; Owing to having realized the robotization of test, save test and taken plant area and hand labor power, avoid the uncertainty of manual intervention in test process, improved product quality, reduced cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the external structure schematic diagram of a kind of soft board ATE (automatic test equipment) of providing of the embodiment of the present invention;
Fig. 2 is the inner structure schematic diagram of a kind of soft board ATE (automatic test equipment) of providing of the embodiment of the present invention;
Fig. 3 is the structural representation of feeding device in the embodiment of the present invention;
Fig. 4 is the structural representation of proving installation and handling equipment in the embodiment of the present invention;
Fig. 5 is the structural representation of drawing mechanism in the embodiment of the present invention;
Fig. 6 is the structural representation of turnover pallet slewing equipment in the embodiment of the present invention;
Fig. 7 is the structural representation of the upper measuring head of measurement jig in the embodiment of the present invention;
Fig. 8 is lower and the structural representation of measurement jig counterdie of measurement jig in the embodiment of the present invention;
Fig. 9 is the structural representation of measurement jig in the embodiment of the present invention.
Embodiment
On existing consumer electronics assembly line, soft board test automation degree is low, inefficient problem.The embodiment of the present invention provides a kind of soft board ATE (automatic test equipment) and soft board automated testing method.
As depicted in figs. 1 and 2, soft board ATE (automatic test equipment), comprising:
Frame 1;
Feeding device 3, is placed on soft board to be measured on described turnover pallet 2;
Proving installation 5, carries out soft board detection;
Drawing mechanism 6, collects the soft board of having tested;
Turnover pallet slewing equipment 8, is arranged in described frame 1, is located between described feeding device 3, proving installation 5 and described drawing mechanism 6, and described turnover pallet 2 is turned round between described feeding device 3, proving installation 5 and described drawing mechanism 6;
Handling equipment, the soft board that test is completed is put to the turnover pallet on turnover pallet slewing equipment, and the turnover pallet by soft board to be measured from turnover pallet slewing equipment is put to proving installation.
Described turnover pallet is provided with and does not survey soft board placement cave, qualified soft board places cave and defective soft board is placed cave, and the described soft board of not surveying is placed the double described defective soft board placement cave of doing, cave.
As Fig. 4, Fig. 7, shown in Fig. 8 and Fig. 9, described proving installation comprises measurement jig, described measurement jig comprises lower 51 and upper measuring head 52, described lower 51 is fixedly mounted in described frame 1, described upper measuring head 52 is connected with measuring head translating device and measuring head jacking gear, described frame 1 is provided with the first test station 11 and the second test station 12, in described the first test station 11 and described the second test station 12, be respectively equipped with two measurement jigs, described turnover pallet 2 is provided with two and does not survey soft board placement cave 21 and two qualified soft boards placement caves 22, described lower 51 is provided with measurement jig counterdie 55, described upper measuring head 52 comprises mold mounting plate 56 and measurement jig patrix 57, described measurement jig patrix 57 is arranged on described upper mold mounting plate 56 belows, described measurement jig patrix 57 is provided with test module 58, described measurement jig counterdie 55 is provided with lower test module 59, the test probe 60 being connected with described upper test module 58 is installed on described measurement jig patrix 57, the test probe seat 71 that can peg graft with described test probe 60 is installed on described measurement jig counterdie 55, described test probe seat 71 is connected with described lower test module 59, described upper test module 58 is provided with the test pin mark 72 for being connected with pin mark on soft board, described measurement jig patrix 57 is provided with register pin 73, described measurement jig counterdie 55 is provided with the pilot hole 74 coordinating with described register pin 73, the lower surface of described upper mold mounting plate is provided with the support column 75 that connects described measurement jig patrix 57, described measuring head translating device comprises measuring head flat-removing air cyclinder 53, described measuring head jacking gear comprises measuring head lift cylinder 54, described measurement jig counterdie is provided with soft board locating device, described soft board locating device comprises the multiple locating pins 102 that surround soft board foreign steamer profile, described soft board locating device can also be locating slot identical with soft board foreign steamer profile etc.Described measuring head translating device and described measuring head lift cylinder can also be screw mechanism.Described upper test module 58 and lower test module are known technology, do not repeat them here.
As shown in Figure 3, described feeding device comprises pallet feeding device and empty pallet gathering-device, described pallet feeding device comprises the first feed tray seat 31 of placing the feed pallet of filling soft board to be measured, described feed pallet 33 stacks and puts on described the first feed tray seat 31 upper stratas, described empty pallet gathering-device comprises the second feed tray seat 32 of placing empty feed pallet, between described the first feed tray seat 31 and described the second feed tray seat 32 and described frame 1, be equipped with feed tray seat apparatus for automatically lifting, in described frame 1, be provided with empty feed pallet is carried to the feed pallet conveying device the second feed tray seat 32 from described the first feed tray seat 31, the soft board Feeder Manipulator 34 that by soft board to be measured feed pallet 33 from the first feed tray seat 31 transfers to turnover pallet 2 is also installed in described frame 1, described soft board Feeder Manipulator is provided with two profiling suckers 41, the shape of described profiling sucker 41 is identical with the shape of described soft board, described soft board Feeder Manipulator is known technology, do not repeat them here, described feed tray seat apparatus for automatically lifting comprises the feed tray seat guidepost 35 being arranged in described frame 1, on described the first feed tray seat 31 and described the second feed tray seat 32, be respectively equipped with the pilot hole coordinating with described feed tray seat guidepost 35, feed tray seat leading screw 36 is also installed in described frame 1, on described the first feed tray seat 31 and described the second feed tray seat 32, the screw coordinating with described feed tray seat leading screw 36 is installed, described feed tray seat leading screw 36 is connected with device of rotation driving, described device of rotation driving comprises feed tray seat leading screw driving motor 37, feed tray seat leading screw driving motor 37 drives feed tray seat leading screw to rotate, by the screw being arranged on described the first feed tray seat 31 and described the second feed tray seat 32, drive described the first feed tray seat 31 and described the second feed tray seat 32 liftings, in concrete enforcement, can also adopt the driving of the realizations such as cylinder to the first feed tray seat 31 and described the second feed tray seat 32 liftings, described feed tray seat apparatus for automatically lifting also comprises automatic lifting controller, described automatic lifting controller comprises rack-mounted upper limit sensor and lower limit sensor, upper limit position and the lower position of the first feed tray seat 31 or the second feed tray seat 32 liftings described in described upper limit sensor and the control of described lower limit sensor, described automatic lifting controller also comprises feed pallet photoelectric sensor, described feed pallet photoelectric sensor detects on the first feed tray seat 31 or the second feed tray seat 32 whether have feed pallet, described pilot hole is four, four described pilot holes face limit along two of described feed pallet and distribute, in described frame, be provided with and four four feed tray seat guideposts that described pilot holes difference is corresponding, four described feed tray seat guideposts pass from four pilot holes that are located at described feed pallet two and face limit the movement that has limited feed pallet, played spacing effect.Described upper limit sensor, lower limit sensor and described feed pallet photoelectric sensor are not shown, described automatic lifting controller also comprises automatic lifting control PLC, described upper limit sensor, lower limit sensor and described feed pallet photoelectric sensor are connected to the input end of automatic lifting control PLC, the output terminal of described automatic lifting control PLC is connected with described leading screw driving motor and described soft board Feeder Manipulator 34, described feed pallet conveying device comprises carrying cylinder 38 and sucker jacking gear 39, described carrying cylinder 38 drives described sucker jacking gear to move back and forth between described pallet feeding device and empty pallet gathering-device, feed pallet Acetabula device 40 is installed on described sucker jacking gear 39, described sucker jacking gear 39 comprises the elevating bracket being connected with described carrying cylinder 38, described elevating bracket is slidably mounted in described frame, the feed pallet sucker lift cylinder being connected with described feed pallet Acetabula device is installed on described elevating bracket, described feed pallet Acetabula device 40 comprises suction vacuum cup.
As shown in Figure 5, described drawing mechanism comprises pallet material collecting device, rewinding completes pallet gathering-device and unacceptable product recycling box 103, described pallet material collecting device comprises the first rewinding tray seat 61 of placing empty rewinding pallet 63, described rewinding pallet 63 stacks and puts on described the first rewinding tray seat 61 upper stratas, described rewinding completes pallet gathering-device and comprises the second rewinding tray seat 62 of placing the rewinding pallet of filling soft board, between described the first rewinding tray seat 61 and described the second rewinding tray seat 62 and described frame, be equipped with rewinding tray seat apparatus for automatically lifting, described unacceptable product recycling box 103 is arranged on the outside of the described frame of closing on described the first rewinding tray seat 61, in described frame 1, be provided with the rewinding pallet 63 of filling soft board is carried to the rewinding pallet conveying device the second rewinding tray seat 62 from described the first rewinding tray seat 61, in described frame 1, be also provided with soft board is transferred to rewinding pallet the first rewinding tray seat 61 or the soft board discharging mechanical arm 64 of unacceptable product recycling box from described turnover pallet 2, described soft board discharging mechanical arm 64 is connected with soft board discharging manipulator controller, described soft board discharging manipulator controller comprises the Fibre Optical Sensor that whether has defective soft board in detection turnover pallet, described Fibre Optical Sensor judges whether the not survey soft board placement place, cave in discharging station 84 place's turnover pallets has soft board, if have, signal can be conducted to discharging control PLC, discharging control PLC output signal control soft board discharging mechanical arm 64 is never surveyed defective soft board in soft board placement cave and is taken out and be placed in unacceptable product recycling box.Described soft board discharging machinery is provided with two profiling suckers on hand, the shape of described profiling sucker is identical with the shape of described soft board, described soft board discharging mechanical arm 64 is known technology, do not repeat them here, described rewinding tray seat apparatus for automatically lifting comprises the rewinding tray seat guidepost 65 being arranged in described frame 1, on described the first rewinding tray seat 61 and described the second rewinding tray seat 62, be respectively equipped with the pilot hole coordinating with described rewinding tray seat guidepost 65, rewinding tray seat leading screw 66 is also installed in described frame 1, on described the first rewinding tray seat 61 and described the second rewinding tray seat 62, the screw coordinating with described rewinding tray seat leading screw 66 is installed, described rewinding tray seat leading screw 66 is connected with device of rotation driving, described device of rotation driving comprises rewinding tray seat leading screw rotating drive motor 67, rewinding tray seat leading screw driving motor 67 drives rewinding tray seat leading screw to rotate, by the screw being arranged on described the first rewinding tray seat 61 and described the second rewinding tray seat 62, drive described the first rewinding tray seat 61 and described the second rewinding tray seat 62 liftings, in concrete enforcement, can also adopt the driving of the realizations such as cylinder to described the first rewinding tray seat 61 and described the second rewinding tray seat 62 liftings, described rewinding tray seat apparatus for automatically lifting also comprises automatic lifting controller, described automatic lifting controller comprises rack-mounted upper limit sensor and lower limit sensor, upper limit position and the lower position of the first rewinding tray seat 61 or the second rewinding tray seat 62 liftings described in described upper limit sensor and the control of described lower limit sensor, described automatic lifting controller also comprises rewinding pallet photoelectric sensor, described rewinding pallet photoelectric sensor detects on described the first rewinding tray seat 61 or the second rewinding tray seat 62 whether have rewinding pallet, described pilot hole is four, four described pilot holes face limit along two of described rewinding pallet and distribute, in described frame, be provided with and four four rewinding tray seat guideposts that described pilot holes difference is corresponding, four described rewinding tray seat guideposts pass from four pilot holes that are located at described rewinding pallet two and face limit the movement that has limited rewinding pallet, have played spacing effect.Described upper limit sensor, lower limit sensor and described photoelectric sensor are not shown, described bound level sensor and described photoelectric sensor are connected to the input end of discharging control PLC, the output terminal of discharging control PLC is connected with described leading screw driving motor and described soft board discharging mechanical arm, described rewinding pallet conveying device comprises carrying cylinder 68 and sucker jacking gear 69, described carrying cylinder 68 drives described sucker jacking gear 69 to complete between pallet gathering-device and move back and forth in described pallet material collecting device and rewinding, rewinding pallet Acetabula device 70 is installed on described sucker jacking gear 69.Described sucker jacking gear 69 comprises the elevating bracket being connected with described carrying cylinder 38, described elevating bracket is slidably mounted in described frame, the feed pallet sucker lift cylinder being connected with described feed pallet Acetabula device is installed on described elevating bracket, and described feed pallet Acetabula device 70 comprises suction vacuum cup.
As shown in Figure 6, described turnover pallet slewing equipment comprises revolution conveying belt, described revolution conveying belt is provided with first turnover pallet locating device 81 and the second turnover pallet locating device 82 corresponding with the first test station 11 and the second test station 12 difference, the all rotation control apparatus that make described turnover pallet 2 intervals be delivered to described the first turnover pallet locating device 81 and the second turnover pallet locating device 82 are also installed on described revolution conveying belt, on described revolution conveying belt, be also provided with the feed station 83 corresponding with described feeding device and the discharging station 84 corresponding with described drawing mechanism, described feed station 83 is provided with turnover pallet feed locating device, described discharging station 84 is provided with turnover pallet discharging locating device, described revolution conveying belt comprises the first conveying belt 86 of close described proving installation 5 and the second conveying belt 87 away from described proving installation, between described the first conveying belt 86 and the two ends of described the second conveying belt 87, be provided with turnover pallet pusher, described the first conveying belt 86 and described the second conveying belt 87 include belt erecting frame, on described belt erecting frame, turnover pallet gathering sill 88 is installed, two parallel and spaced conveying belt bodies 89 are installed in described turnover pallet gathering sill 88, described revolution conveying belt can also be for having the rotary conveyer of cycloconveyor belt, described rotary conveyer is known technology, do not repeat them here, described the first turnover pallet locating device 81 and described the second turnover pallet locating device 82 include two pallet limit portion wedges 90, described in two, pallet limit portion wedge 90 is fixedly mounted on and is positioned on the described belt erecting frame of carrying belt body 89 both sides described in two, described in two, pallet limit portion wedge 90 has the locating surface of the relative both sides upper surface that is positioned at described turnover pallet 2, described the first turnover pallet locating device 81 and described the second turnover pallet locating device 82 also comprise respectively at the turnover pallet jacking block of carrying described in two between belt body 89, described turnover pallet jacking block is connected with jacking block lift cylinder 91, described the first turnover pallet locating device 81 and described the second turnover pallet locating device 82 also comprise respectively at the turnover pallet position block 92 of carrying described in two between belt body 89, described turnover pallet position block 92 is connected with block lift cylinder, described turnover pallet position block 92 is positioned at the exit side of described the first turnover pallet locating device 81 and the exit side of the second turnover pallet locating device 82, the first conveying belt carries described turnover pallet when arriving the first turnover pallet locating device and the second turnover pallet locating device, turnover pallet position block 92 rises under the drive of block lift cylinder, the continuation that stops described turnover pallet 2 is moved, described turnover pallet jacking block 91 rises the bottom surface that withstands on described turnover pallet under the drive of jacking block lift cylinder, described turnover pallet 2 is withstood on described pallet limit portion wedge, described soft board Feeder Manipulator vision positioning system is submitted to described soft board test handler control device by the position deviation of soft board, realized the accurate location of soft board.
Described turnover pallet feed locating device comprises the first port block 93 being located on the port that described turnover pallet gathering sill 88 closes on described feeding device, described turnover pallet discharging locating device comprises the second port block 94 being located on the port that described turnover pallet gathering sill 88 closes on described drawing mechanism, described the first port block 93 and the movement that has limited described turnover pallet, be convenient to described soft board Feeder Manipulator soft board to be measured is put into described turnover pallet, described turnover pallet feed locating device can also be feed positioning cylinder, described feed positioning cylinder is arranged on the outer wall of described turnover pallet gathering sill, described turnover pallet gathering sill is provided with the feed positioning through hole passing for feed positioning cylinder piston rod, the piston rod of described feed positioning cylinder holds out against turnover pallet on the inner side cell wall of turnover pallet gathering sill 88 that is positioned at feed station 83 places, to facilitate soft board Feeder Manipulator 34 to turnover pallet feed, described the second port block 94 has limited the movement of described turnover pallet, be convenient to described soft board discharging mechanical arm soft board is put into described rewinding pallet from turnover pallet, described turnover pallet discharging locating device can also be discharging positioning cylinder, described discharging positioning cylinder is arranged on the outer wall of described turnover pallet gathering sill, described turnover pallet gathering sill is provided with to confess anticipates the discharging positioning through hole that a cylinder piston rod passes, the piston rod of described discharging positioning cylinder holds out against turnover pallet on the inner side cell wall of turnover pallet gathering sill 88 that is positioned at discharging station 84 places, to facilitate soft board discharging mechanical arm 34 to turnover pallet feed, described all rotation control apparatus comprise be arranged on the first conveying belt two described in carry two between belt body 89 turnover to control block 95, the number of described turnover control block can also be three or three other above numbers, described turnover control block 95 is connected with turnover and controls block jacking gear, distance described in adjacent two between turnover control block 95 is greater than the width of a described turnover pallet 2, described turnover control block be located between described feeding device and described proving installation the first conveying belt two described in carry between belt body, described turnover control block is when described the first turnover pallet locating device 81 and described the second turnover pallet locating device are positioned with turnover pallet, block the movement of follow-up turnover pallet.
Described turnover pallet pusher comprises the push pedal 96 that described turnover pallet 2 is pushed along described gathering sill 88 Widths, described push pedal 96 is connected with push pedal cylinder 97, described turnover pallet pusher also comprises that being located at the turnover pallet in pallet gathering sill 88 inside slot edge described in two crosses mouth 98, described push pedal cylinder 97 promotes push pedal and moves at gathering sill Width, described push pedal can also adopt screw mechanism to drive, and under the driving of leading screw, screw drives push pedal campaign.
The described turnover pallet gathering sill 88 of the feed side of described turnover pallet pusher is provided with propelling movement feed control device, described propelling movement feed control device comprises that the turnover pallet being located on described turnover pallet gathering sill 88 cell walls holds out against cylinder 99, the described piston rod through hole from described turnover pallet gathering sill 88 that holds out against cylinder stretches in described turnover pallet gathering sill 88, described turnover pallet holds out against cylinder 99 described turnover pallet is held out against on the cell wall of described turnover pallet gathering sill 88, while having turnover pallet within the scope of the propelling movement of described turnover pallet pusher, described turnover pallet holds out against cylinder the turnover pallet that will enter within the scope of the propelling movement of described turnover pallet pusher is held out against in described turnover pallet gathering sill, guaranteed the normal work of push pedal, it is to be noted and can also adopt various structures to avoid turnover pallet along with carrying belt body motion for those of ordinary skills, make described turnover pallet static with respect to described turnover pallet gathering sill, for example adopt elevator to block described turnover pallet, described elevator is connected with lift cylinder.
As shown in Figure 4, described handling equipment comprises the soft board test handler 85 that is located at respectively the first test station 11 and the second test station 12, and described soft board test handler 85 is connected with soft board test handler control device, the soft board test handler vision positioning system corresponding with the first turnover pallet locating device 81 and the second turnover pallet locating device 82 difference is installed in described frame, described soft board test handler vision positioning system determine soft board at the first turnover pallet locating device and the second turnover pallet locating device place position numerical value and the amount of deflection with respect to measurement jig, described in the control of described soft board test handler control device, soft board test handler is adjusted the position of soft board on measurement jig counterdie according to described position numerical value and the amount of deflection, described soft board Feeder Manipulator vision positioning system comprises camera and light source, described camera is connected with data collecting plate card, described data collecting plate card is connected with computing machine, the model of described data collecting plate card is PCI-6221, described computing machine is connected with described soft board test handler control device, described light source is radiated at the first turnover pallet locating device 81 and the second turnover pallet locating device 82, described soft board test handler comprises X-axis guide rail 76, on described X-axis guide rail 76, X-axis slide block 77 is installed, on described X-axis slide block 77, Y-axis guide rail 78 is installed, on described Y-axis guide rail 78, Y-axis slide block 79 is installed, on described Y-axis slide block 79, motor 80 is installed, soft board carrying head is installed on the output shaft of described motor 80, described soft board carrying head comprises profiling sucker 100, described profiling sucker 100 is arranged on sucker lift cylinder 101, described sucker lift cylinder 101 is connected with the output shaft of described motor 80, described light source is located at the periphery of described camera lens.On the Y-axis slide block that described soft board test handler can also be installed X-axis guide rails assembling on described Y-axis guide rail, on described X-axis slide block, motor is installed, soft board carrying head is installed on the output shaft of described motor, described soft board test handler control device is known technology, does not repeat them here.
When testing, as Fig. 1 and as shown in shown in Fig. 2, described turnover pallet slewing equipment 8 drives described turnover pallet 2 to pass through successively described feeding device 3, described proving installation 5, described drawing mechanism 6, at described turnover pallet slewing equipment 8, drive in the rotating process of described turnover pallet, complete successively the defective soft board classification of soft board feed step to be measured, soft board testing procedure and qualified soft board discharging step.
In the defective soft board classification of described qualified soft board discharging step, soft board test handler is put into qualified soft board on the qualified soft board placement cave 22 of turnover pallet, and underproof soft board is placed into the not survey soft board of turnover pallet and places on cave 21.
In two measurement jig alternations of the first test station 11 described in described soft board testing procedure and described the second test station 12, when a described measurement jig carries out soft board test, described in another, measurement jig has been tested the blanking of soft board and the material loading of soft board to be measured.
Described soft board ATE (automatic test equipment) and soft board automated testing method, have advantages of flexible strong, soft board within the scope of certain size and measuring accuracy, all can complete test jobs, and thread-changing only needs to make corresponding measurement jig and supporting turnover pallet, feed pallet and rewinding pallet; And automaticity is high, production capacity is strong, can maximizes and save manually.Can also and survey soft board separately by soft board to be measured, eliminate and surveyed soft board and do not survey the possibility that soft board is obscured, improve reliability; Owing to having realized the robotization of test, save test and taken plant area and hand labor power, avoid the uncertainty of manual intervention in test process, improved product quality, reduced cost.
Comprise the above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. soft board ATE (automatic test equipment), is characterized in that, comprising:
Frame;
Multiple turnover pallets;
Feeding device, is placed on soft board to be measured on described turnover pallet;
Proving installation, carries out soft board detection;
Drawing mechanism, collects the soft board of having tested;
Turnover pallet slewing equipment, is arranged in described frame, is located between described feeding device, proving installation and described drawing mechanism, and described turnover pallet is turned round between described feeding device, proving installation and described drawing mechanism;
Handling equipment, the soft board that test is completed is put to the turnover pallet on turnover pallet slewing equipment, and the turnover pallet by soft board to be measured from turnover pallet slewing equipment is put to proving installation.
2. soft board ATE (automatic test equipment) as claimed in claim 1, it is characterized in that: described turnover pallet is provided with and does not survey soft board placement cave, qualified soft board places cave and defective soft board is placed cave, the described soft board of not surveying is placed the double described defective soft board placement cave of doing, cave.
3. soft board ATE (automatic test equipment) as claimed in claim 2, it is characterized in that: described proving installation comprises measurement jig, described measurement jig comprises lower and upper measuring head, described lower is fixedly mounted in described frame, described upper measuring head is connected with measuring head translating device and measuring head jacking gear, described frame is provided with the first test station and the second test station, in described the first test station and described the second test station, be respectively equipped with two measurement jigs, described turnover pallet is provided with two and does not survey soft board placement cave and two qualified soft boards placement caves, described lower is provided with measurement jig counterdie, described upper measuring head comprises mold mounting plate and measurement jig patrix, described measurement jig patrix is arranged on described upper mold mounting plate below, described measurement jig patrix is provided with test module, described measurement jig counterdie is provided with lower test module, the test probe being connected with described upper test module is installed on described measurement jig patrix, the test probe seat that can peg graft with described test probe is installed on described measurement jig counterdie, described test probe seat is connected with described lower test module, described upper test module is provided with the test pin mark for being connected with pin mark on soft board, described measurement jig patrix is provided with register pin, described measurement jig counterdie is provided with the pilot hole coordinating with described register pin, the lower surface of described upper mold mounting plate is provided with the support column that connects described measurement jig patrix, described measuring head translating device comprises measuring head flat-removing air cyclinder, described measuring head jacking gear comprises measuring head lift cylinder, described measurement jig counterdie is provided with soft board locating device, described soft board locating device comprises the multiple locating pins that surround soft board foreign steamer profile.
4. soft board ATE (automatic test equipment) as claimed in claim 1, it is characterized in that: described feeding device comprises pallet feeding device and empty pallet gathering-device, described pallet feeding device comprises the first feed tray seat of placing the feed pallet of filling soft board to be measured, described feed pallet stacks and puts on described the first feed tray seat upper strata, described empty pallet gathering-device comprises the second feed tray seat of placing empty feed pallet, between described the first feed tray seat and described the second feed tray seat and described frame, be equipped with feed tray seat apparatus for automatically lifting, in described frame, be provided with empty feed pallet is carried to the feed pallet conveying device the second feed tray seat from described the first feed tray seat, feed tray transfer from the first feed tray seat is also installed by soft board to be measured to the soft board Feeder Manipulator of turnover pallet in described frame, described feed tray seat apparatus for automatically lifting comprises the feed tray seat guidepost being arranged in described frame, on described the first feed tray seat and described the second feed tray seat, be respectively equipped with the pilot hole coordinating with described feed tray seat guidepost, feed tray seat leading screw is also installed in described frame, on described the first feed tray seat and described the second feed tray seat, the screw coordinating with described feed tray seat leading screw is installed, described feed tray seat leading screw is connected with device of rotation driving, described feed tray seat apparatus for automatically lifting also comprises automatic lifting controller, described automatic lifting controller comprises rack-mounted upper limit sensor and lower limit sensor, described automatic lifting controller also comprises feed pallet photoelectric sensor, described pilot hole is four, four described pilot holes face limit along two of described feed pallet and distribute, in described frame, be provided with and four four feed tray seat guideposts that described pilot holes difference is corresponding, described feed pallet conveying device comprises carrying cylinder and sucker jacking gear, described carrying cylinder drives described sucker jacking gear to move back and forth between described pallet feeding device and empty pallet gathering-device, feed pallet Acetabula device is installed on described sucker jacking gear.
5. soft board ATE (automatic test equipment) as claimed in claim 1, it is characterized in that: described drawing mechanism comprises pallet material collecting device, rewinding completes pallet gathering-device and unacceptable product recycling box, described pallet material collecting device comprises the first rewinding tray seat of placing empty rewinding pallet, described rewinding pallet stacks and puts on described the first rewinding tray seat upper strata, described rewinding completes pallet gathering-device and comprises the second rewinding tray seat of placing the rewinding pallet of filling soft board, between described the first rewinding tray seat and described the second rewinding tray seat and described frame, be equipped with rewinding tray seat apparatus for automatically lifting, in described frame, be provided with the rewinding pallet of filling soft board is carried to the rewinding pallet conveying device the second rewinding tray seat from described the first rewinding tray seat, in described frame, be also provided with soft board is transferred to rewinding pallet the first rewinding tray seat or the soft board discharging mechanical arm of unacceptable product recycling box from described turnover pallet, described soft board discharging mechanical arm is connected with soft board discharging manipulator controller, described soft board discharging manipulator controller comprises the Fibre Optical Sensor that whether has defective soft board in detection turnover pallet, described rewinding tray seat apparatus for automatically lifting comprises the rewinding tray seat guidepost being arranged in described frame, on described the first rewinding tray seat and described the second rewinding tray seat, be respectively equipped with the pilot hole coordinating with described rewinding tray seat guidepost, rewinding tray seat leading screw is also installed in described frame, on described the first rewinding tray seat and described the second rewinding tray seat, the screw coordinating with described rewinding tray seat leading screw is installed, described rewinding tray seat leading screw is connected with device of rotation driving, described rewinding tray seat apparatus for automatically lifting also comprises automatic lifting controller, described automatic lifting controller comprises rack-mounted upper limit sensor and lower limit sensor, described automatic lifting controller also comprises rewinding pallet photoelectric sensor, described pilot hole is four, four described pilot holes face limit along two of described rewinding pallet and distribute, in described frame, be provided with and four four rewinding tray seat guideposts that described pilot holes difference is corresponding, described rewinding pallet conveying device comprises carrying cylinder and sucker jacking gear, described carrying cylinder drives described sucker jacking gear to complete between pallet gathering-device and move back and forth in described pallet material collecting device and rewinding, and rewinding pallet Acetabula device is installed on described sucker jacking gear.
6. soft board ATE (automatic test equipment) as claimed in claim 1, it is characterized in that: described turnover pallet slewing equipment comprises revolution conveying belt, described revolution conveying belt is provided with first turnover pallet locating device and the second turnover pallet locating device corresponding with the first test station and the second test station difference, the all rotation control apparatus that make described turnover pallet interval be delivered to described the first turnover pallet locating device and the second turnover pallet locating device are also installed on described revolution conveying belt, on described revolution conveying belt, be also provided with the feed station corresponding with described feeding device and the discharging station corresponding with described drawing mechanism, described feed station is provided with turnover pallet feed locating device, described discharging station is provided with turnover pallet discharging locating device, described revolution conveying belt comprises the first conveying belt of close described proving installation and the second conveying belt away from described proving installation, between described the first conveying belt and the two ends of described the second conveying belt, be provided with turnover pallet pusher, described the first conveying belt and described the second conveying belt include belt erecting frame, on described belt erecting frame, turnover pallet gathering sill is installed, two parallel and spaced conveying belt bodies are installed in described turnover pallet gathering sill, described the first turnover pallet locating device and described the second turnover pallet locating device include two pallet limit portion wedges, described in two, pallet limit portion wedge is fixedly mounted on and is positioned on the described belt erecting frame of carrying belt body both sides described in two, described in two, pallet limit portion wedge has the locating surface of the relative both sides upper surface that is positioned at described turnover pallet, described the first turnover pallet locating device and described the second turnover pallet locating device also comprise respectively at the turnover pallet jacking block of carrying described in two between belt body, described turnover pallet jacking block is connected with jacking block lift cylinder, described the first turnover pallet locating device and described the second turnover pallet locating device also comprise respectively at the turnover pallet position block of carrying described in two between belt body, described turnover pallet position block is connected with block lift cylinder, described turnover pallet position block is positioned at the exit side of described the first turnover pallet locating device and the exit side of the second turnover pallet locating device, described turnover pallet feed locating device comprises the port block being located on the port that described turnover pallet gathering sill closes on described feeding device, described turnover pallet discharging locating device comprises the port block being located on the port that described turnover pallet gathering sill closes on described drawing mechanism, described all rotation control apparatus comprise be arranged on the first conveying belt two described in carry at least two between belt body turnover to control block, described turnover control block is connected with turnover and controls block jacking gear, distance described in adjacent two between turnover control block is greater than the width of a described turnover pallet, described turnover pallet pusher comprises the push pedal that described turnover pallet is pushed along described gathering sill Width, described push pedal is connected with push pedal cylinder, described turnover pallet pusher also comprises that being located at the turnover pallet in pallet gathering sill inside slot edge described in two crosses mouth, the described turnover pallet gathering sill of the feed side of described turnover pallet pusher is provided with propelling movement feed control device, described propelling movement feed control device comprises that the turnover pallet being located on described turnover pallet gathering sill cell wall holds out against cylinder, described turnover pallet holds out against cylinder described turnover pallet is held out against on the cell wall of described turnover pallet gathering sill.
7. soft board ATE (automatic test equipment) as claimed in claim 6, it is characterized in that: described handling equipment comprises the soft board test handler that is located at respectively the first test station and the second test station, described soft board test handler is connected with soft board test handler control device, the soft board test handler vision positioning system corresponding with the first turnover pallet locating device and the second turnover pallet locating device difference is installed in described frame, described soft board test handler vision positioning system determine soft board at the first turnover pallet locating device and the second turnover pallet locating device place position numerical value and the amount of deflection with respect to measurement jig, described in the control of described soft board test handler control device, soft board test handler is adjusted the position of soft board on measurement jig counterdie according to described position numerical value and the amount of deflection, described soft board Feeder Manipulator vision positioning system comprises camera and light source, described camera is connected with data collecting plate card, described data collecting plate card is connected with computing machine, described computing machine is connected with described soft board test handler control device, described light source is radiated at the first turnover pallet locating device and the second turnover pallet locating device, described soft board test handler comprises X-axis guide rail, on described X-axis guide rail, X-axis slide block is installed, on described X-axis slide block, Y-axis guide rail is installed, on described Y-axis guide rail, Y-axis slide block is installed, on described Y-axis slide block, motor is installed, soft board carrying head is installed on the output shaft of described motor, described soft board carrying head comprises profiling sucker, described profiling sucker is arranged on sucker lift cylinder, described sucker lift cylinder is connected with the output shaft of described motor, described light source is located at the periphery of described camera lens.
8. the soft board automated testing method of soft board ATE (automatic test equipment) as claimed in claim 1, it is characterized in that: described turnover pallet slewing equipment drives described turnover pallet to pass through successively described feeding device, described proving installation, described drawing mechanism, at described turnover pallet slewing equipment, drive in the rotating process of described turnover pallet, complete successively soft board feed step to be measured, soft board testing procedure and qualified soft board and defective soft board classification discharging step.
9. the soft board automated testing method of soft board ATE (automatic test equipment) as claimed in claim 8, it is characterized in that: in described qualified soft board and defective soft board classification discharging step, soft board test handler is put into qualified soft board on the qualified soft board placement cave of turnover pallet, and underproof soft board is placed into the not survey soft board of turnover pallet and places on cave.
10. the soft board automated testing method of soft board ATE (automatic test equipment) as claimed in claim 9, it is characterized in that: in two measurement jig alternations of the first test station described in described soft board testing procedure and described the second test station, when a described measurement jig carries out soft board test, described in another, measurement jig has been tested the blanking of soft board and the material loading of soft board to be measured.
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| CN108572295A (en) * | 2018-07-03 | 2018-09-25 | 广东华测检测机器人股份有限公司 | A kind of universal test machine of winding displacement soft board class |
| CN108572295B (en) * | 2018-07-03 | 2024-04-19 | 广东华测检测机器人股份有限公司 | Universal tester for flat cable soft board |
| CN109110489A (en) * | 2018-08-30 | 2019-01-01 | 深圳市泛思成科技有限公司 | A kind of universal automatic test equipment and its test method |
| CN109406400A (en) * | 2018-11-27 | 2019-03-01 | 苏州史托格自动化设备制造有限公司 | A kind of rotation transplant apparatus suitable for logo detection |
| CN109712924A (en) * | 2018-12-29 | 2019-05-03 | 哈工大机器人（山东）智能装备研究院 | A kind of infrared focal plane array chip automated test device |
| CN109884508A (en) * | 2019-03-20 | 2019-06-14 | 深圳精智达技术股份有限公司 | A kind of display screen mechanism for testing |
| CN114089084A (en) * | 2021-10-20 | 2022-02-25 | 咸阳职业技术学院 | Power supply and distribution wiring detection equipment |
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