CN105049725A - Equipment for acquiring real picture in circuit board first piece testing and control method - Google Patents
Equipment for acquiring real picture in circuit board first piece testing and control method Download PDFInfo
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- CN105049725A CN105049725A CN201510456785.8A CN201510456785A CN105049725A CN 105049725 A CN105049725 A CN 105049725A CN 201510456785 A CN201510456785 A CN 201510456785A CN 105049725 A CN105049725 A CN 105049725A
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Abstract
The invention discloses equipment for acquiring a real picture in circuit board first piece testing and a control method. A camera and light sources of the equipment are fixed on the upper part of a frame; a tray is arranged on a workbench of the frame through a linear guide rail; the tray is driven by a tray driving mechanism; a control circuit comprises a PC (Personal Computer), a PLC (Programmable Logical Controller), a power supply switch, a driving circuit and a sensor; the PC is in communication connection with the PLC; the tray driving mechanism is connected with a power supply through the driving circuit; the control end of the driving circuit is connected with the control signal output end of the PLC; the light sources and the power supply of the camera are connected with the power supply through the power supply switch; the control end of the power supply switch is connected with the control signal output end of the PLC; the signal output end of the sensor is connected with the signal input end of the PLC; the control end of the camera is connected with the control signal output end of the PC; and the data signal output end of the camera is connected with the data signal input end of the PC. Through adoption of the equipment and the control method, pictures of proper sizes are shot automatically when the camera is used for shooting, and secondary cutting of the pictures is not required, so that the measurement error is small, and the working efficiency is high.
Description
[technical field]
The present invention relates to the test of circuit board initial workpiece, particularly relate to equipment and control method that the test of a kind of circuit board initial workpiece obtains picture in kind.
[background technology]
Check in SMT board production in initial workpiece test link and need to obtain picture in kind, obtain picture in kind and generally adopt two kinds of methods.
1) take pictures after artificial input computer computer after the target size that workman utilizes slide calliper rule to measure to take pictures, its shortcoming there will be artificial measure error again, inefficiency, expends man-hour.
2) after take pictures in camera full width face, completed by artificial sectional drawing or software sectional drawing, this way computer computer needs a large amount of computing, needs the computer hardware of high deployment cost.The longevity of service of camera and light source, hardware deterioration is higher.
[summary of the invention]
It is little that the technical problem to be solved in the present invention is to provide a kind of measure error, and the circuit board initial workpiece test that operating efficiency is high obtains the equipment of picture in kind.
The technical problem to be solved in the present invention is to provide the control method that the test of a kind of foregoing circuit plate initial workpiece obtains picture device in kind.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, the test of circuit board initial workpiece obtains the equipment of picture in kind, comprises frame, power supply, camera, light source, control circuit, the pallet of bearer circuit plate, line slideway and tray drive mechanism; , camera and light source are fixed in frame, and frame comprises workbench, and pallet is installed on the table by line slideway; Pallet is driven by tray drive mechanism, linearly guide rail moving linearly; Camera is line scan camera, is arranged in the top of pallet; Light source arrangement is between camera and pallet; Control circuit comprises the first sensor of PC, PLC, mains switch, drive circuit and testing circuit plate stroke terminal; PC and PLC communicate to connect, and tray drive mechanism connects power supply by drive circuit, the first control signal output of the control termination PLC of drive circuit; The power input of light source and camera connects power supply by mains switch, the first control signal output of the control termination PLC of mains switch; The signal output part of first sensor connects the first signal input part of PLC; The control signal output of the control termination PC of camera, the data signal output of camera connects the data signal input of PC.
Above-described equipment, described light source comprises two strip sources, the light path of camera through the space two strip sources, the major axis of strip source and the axes normal of line slideway.
Above-described equipment, first sensor is arranged in the outside of two strip sources.
Above-described equipment, comprises the line slideway described in two, and tray drive mechanism comprises motor, feed screw nut pair and tooth belt driver; The guide rail of line slideway is fixing on the table, and pallet is fixed on the slide block of line slideway; The screw mandrel of feed screw nut pair is driven by tooth belt driver by motor, and the nut of feed screw nut pair is fixed on pallet; Motor connects power supply by drive circuit.
The control method of the said equipment, comprises the following steps:
1) PLC is according to the instruction of PC, drives pallet and circuit board linearly guide rail moving linearly forward by tray drive mechanism; When pallet leaves initial position, PLC opens the mains switch of light source and camera;
2) when pallet leaves the distance of initial position arrival setting, camera opened by PC, and camera starts to take a picture; When first sensor detects that the rear end of circuit board is left below camera lens, close camera by PLC notice PC, camera stops taking a picture.
Above-described control method, equipment comprise for supporting circuit board, adjustable horizontal spacing two bar shaped supports and detect the second transducer, the 3rd transducer of two bar shaped support lateral attitudes respectively, bar shaped support can be fixed on pallet transverse shifting, parallel with line slideway; Second transducer and the 3rd transducer are fixed on pallet, lay respectively at the outside of two bar shaped supports; The signal output part of the second transducer connects the secondary signal input of PLC, and the signal output part of the 3rd transducer connects the 3rd signal input part of PLC; Second transducer and the 3rd transducer send the positional information of two bar shaped supports to PC by PLC, and PC goes out the width of circuit board according to the positional information calculation of two bar shaped supports, according to the width of the width adjustment shooting photograph of circuit board.
Above-described method, equipment comprises the four-sensor that detection pallet left and returned initial position, and four-sensor is installed on the table, and signal output part connects the 4th signal input part of PLC; When four-sensor detects that pallet leaves initial position, PLC opens the mains switch of light source and camera, and notice PC calculates the distance that pallet leaves initial position; Take a picture complete, when four-sensor detects that pallet returns initial position, PLC closes the power supply of driving mechanism.
Circuit board initial workpiece test of the present invention obtains the equipment of picture in kind by transducer and PC collaborative work, and automatically snap size suitable picture during photograph, picture does not need again to cut out, and measure error is little, and operating efficiency is high.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the structural representation that the test of embodiment of the present invention circuit board initial workpiece obtains the equipment of picture in kind.
Fig. 2 is the control circuit block diagram that the test of embodiment of the present invention circuit board initial workpiece obtains the equipment of picture in kind.
Fig. 3 is the control flow chart that the test of embodiment of the present invention circuit board initial workpiece obtains the equipment of picture in kind.
[embodiment]
The test of embodiment of the present invention circuit board initial workpiece obtains the structure of equipment of picture in kind and principle as shown in Figure 1 to Figure 3, comprises frame, power supply, camera 5, light source 6 and 7, control circuit, the pallet 10 of bearer circuit plate, line slideway and tray drive mechanism.
Camera 5 is line scan camera 5, and camera 5 is fixed on the top of frame, is positioned at the top of pallet 10.Light source 6 and 7 is arranged between camera 5 and pallet 10.
Pallet 10 is arranged on the workbench 20 of frame by line slideway.Pallet 10 is driven by tray drive mechanism, linearly guide rail moving linearly.
As shown in Figure 2, control circuit comprise PC, PLC, mains switch, drive circuit, testing circuit plate stroke terminal transducer 1 and detect pallet 10 and leave and return the transducer 4 of initial position.
PC and PLC communicate to connect, and tray drive mechanism connects power supply by drive circuit, the first control signal output of the control termination PLC of drive circuit.The power input of light source 6 and 7 and camera 5 connects power supply by mains switch, the first control signal output of the control termination PLC of mains switch.The signal output part of transducer 1 connects the first signal input part of PLC.The control signal output of the control termination PC of camera 5, the data signal output of camera 5 connects the data signal input of PC.
Light source 6 and 7 is strip source, the light path of camera 5 through the space two strip sources 6 and 7, the major axis of strip source 6 and 7 and the axes normal of line slideway.
Transducer 1 is arranged in the outside of two strip sources 7, near strip source 7.
Transducer 4 is arranged on workbench 20, and a catch is equipped with in the side of pallet, and the signal output part of transducer 4 connects the 4th signal input part of PLC.When pallet 10 is in initial position, catch covers the light path of transducer 4.
Line slideway is two, and tray drive mechanism comprises motor, feed screw nut pair and tooth belt driver.The guide rail 14 and 15 of line slideway is fixed on the table top of workbench 20, and pallet 10 is fixed on the slide block of line slideway.
The screw mandrel 9 of feed screw nut pair is driven by tooth belt driver by motor 8, and the nut of feed screw nut pair is fixed on pallet 10.Motor 8 connects power supply by drive circuit.
Pallet 10 has been installed two for supporting circuit board, can on pallet 10 transverse shifting, regulate the bar shaped support 11 and 12 of horizontal spacing, the transducer 2 for detecting two bar shaped support lateral attitudes and transducer 3 have been installed in the outside of bar shaped support 11 and 12.Bar shaped support is fixed on pallet 10, parallel with line slideway.Transducer 2 and transducer 3 are fixed on pallet 10, lay respectively at the outside of two bar shaped supports.The signal output part of transducer 2 connects the secondary signal input of PLC, and the signal output part of transducer 3 connects the 3rd signal input part of PLC.
The embodiment of the present invention circuit board initial workpiece test obtain picture in kind equipment control procedure comprise the following steps:
1) PLC is according to the instruction of PC, drives pallet 10 and circuit board linearly guide rail moving linearly forward by tray drive mechanism.When pallet 10 leaves initial position, PLC opens the mains switch of light source 6 and 7 and camera 5, is energized to light source 6 and 7 and camera 5.
2) when pallet 10 leaves the distance of initial position arrival setting, camera 5 opened by PC, and camera 5 starts to take a picture.When transducer 1 detects that the rear end of circuit board is left below camera 5 camera lens, close camera 5 by PLC notice PC, camera 5 stops taking a picture.
Transducer 2 and transducer 3 send the positional information of two bar shaped supports to PC by PLC, and PC goes out the width of circuit board according to the positional information calculation of two bar shaped supports, according to the width of the width adjustment shooting photograph of circuit board.
The width M=L-(A+B+C+D) of circuit board;
Wherein, L is the distance of transducer 2 to transducer 3;
A is the distance of transducer 2 to support 11;
B is the distance of transducer 3 to support 12;
C and D is the width of support 11, support 12 respectively.
When transducer 4 detects that pallet 10 leaves initial position, notice PLC opens the mains switch of light source 6 and 7 and camera 5, and notice PC calculates the distance that pallet 10 leaves initial position.When camera 5 is taken a picture complete, when transducer 4 detects that pallet 10 returns initial position, notice PLC closes the power supply of driving mechanism.
The test of the present invention's above embodiment circuit board initial workpiece obtains the equipment of picture in kind by transducer and PC collaborative work, and automatically snap size suitable picture during photograph, picture does not need again to cut out, and measure error is little, and operating efficiency is high.
Claims (7)
1. the test of circuit board initial workpiece obtains the equipment of picture in kind, and comprise frame, power supply, camera and light source, camera and light source are fixed in frame, it is characterized in that, comprises control circuit, the pallet of bearer circuit plate, line slideway and tray drive mechanism; Frame comprises workbench, and pallet is installed on the table by line slideway; Pallet is driven by tray drive mechanism, linearly guide rail moving linearly; Camera is line scan camera, is arranged in the top of pallet; Light source arrangement is between camera and pallet; Control circuit comprises the first sensor of PC, PLC, mains switch, drive circuit and testing circuit plate stroke terminal; PC and PLC communicate to connect, and tray drive mechanism connects power supply by drive circuit, the first control signal output of the control termination PLC of drive circuit; The power input of light source and camera connects power supply by mains switch, the first control signal output of the control termination PLC of mains switch; The signal output part of first sensor connects the first signal input part of PLC; The control signal output of the control termination PC of camera, the data signal output of camera connects the data signal input of PC.
2. equipment according to claim 1, is characterized in that, described light source comprises two strip sources, the light path of camera through the space two strip sources, the major axis of strip source and the axes normal of line slideway.
3. equipment according to claim 2, is characterized in that, first sensor is arranged in the outside of two strip sources.
4. equipment according to claim 1, is characterized in that, comprises the line slideway described in two, and tray drive mechanism comprises motor, feed screw nut pair and tooth belt driver; The guide rail of line slideway is fixing on the table, and pallet is fixed on the slide block of line slideway; The screw mandrel of feed screw nut pair is driven by tooth belt driver by motor, and the nut of feed screw nut pair is fixed on pallet; Motor connects power supply by drive circuit.
5. a control method for equipment described in claim 1, is characterized in that, comprises the following steps:
501, PLC is according to the instruction of PC, drives pallet and circuit board linearly guide rail moving linearly forward by tray drive mechanism; When pallet leaves initial position, PLC opens the mains switch of light source and camera;
502, when pallet leaves the distance of initial position arrival setting, camera opened by PC, and camera starts to take a picture; When first sensor detects that the rear end of circuit board is left below camera lens, close camera by PLC notice PC, camera stops taking a picture.
6. control method according to claim 5, it is characterized in that, equipment comprise for supporting circuit board, adjustable horizontal spacing two bar shaped supports and detect the second transducer, the 3rd transducer of two bar shaped support lateral attitudes respectively, bar shaped support can be fixed on pallet transverse shifting, parallel with line slideway; Second transducer and the 3rd transducer are fixed on pallet, lay respectively at the outside of two bar shaped supports; The signal output part of the second transducer connects the secondary signal input of PLC, and the signal output part of the 3rd transducer connects the 3rd signal input part of PLC; Second transducer and the 3rd transducer send the positional information of two bar shaped supports to PC by PLC, and PC goes out the width of circuit board according to the positional information calculation of two bar shaped supports, according to the width of the width adjustment shooting photograph of circuit board.
7. method according to claim 5, is characterized in that, equipment comprises the four-sensor that detection pallet left and returned initial position, and four-sensor is installed on the table, and signal output part connects the 4th signal input part of PLC; When four-sensor detects that pallet leaves initial position, PLC opens the mains switch of light source and camera, and notice PC calculates the distance that pallet leaves initial position; Take a picture complete, when four-sensor detects that pallet returns initial position, PLC closes the power supply of driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510456785.8A CN105049725A (en) | 2015-07-30 | 2015-07-30 | Equipment for acquiring real picture in circuit board first piece testing and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510456785.8A CN105049725A (en) | 2015-07-30 | 2015-07-30 | Equipment for acquiring real picture in circuit board first piece testing and control method |
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| CN105049725A true CN105049725A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510456785.8A Pending CN105049725A (en) | 2015-07-30 | 2015-07-30 | Equipment for acquiring real picture in circuit board first piece testing and control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501708A (en) * | 2016-12-24 | 2017-03-15 | 大连日佳电子有限公司 | On on-line checking circuit board, device leakage is inserted, inserts inclined method |
| CN106525872A (en) * | 2016-12-24 | 2017-03-22 | 大连日佳电子有限公司 | Camera system for online detection of omission and deviation in insertion of devices on circuit boards |
| CN106771977A (en) * | 2016-12-31 | 2017-05-31 | 东莞市求是测试设备有限公司 | A kind of SMT intelligence initial workpiece testing equipment |
| CN107132398A (en) * | 2017-05-26 | 2017-09-05 | 重庆市铭冀电子科技有限公司 | Cell phone mainboard current detecting special purpose device |
| CN112432957A (en) * | 2020-12-10 | 2021-03-02 | 苏州特斯捷电子科技有限公司 | Tin ball automatic check out system |
Citations (4)
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| CN101403709A (en) * | 2008-10-31 | 2009-04-08 | 广东正业科技有限公司 | Appearance inspection machine for printed circuit board |
| CN102692418A (en) * | 2012-06-13 | 2012-09-26 | 北京优纳科技有限公司 | Equipment and method for detecting appearances and functions of flat panel display screens |
| CN103048333A (en) * | 2012-12-07 | 2013-04-17 | 北京优纳科技有限公司 | Appearance detection equipment and method |
| CN204761567U (en) * | 2015-07-30 | 2015-11-11 | 深圳华普通用自动化设备有限公司 | Equipment of picture in kind is acquireed in test of circuit board initial workpiece |
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2015
- 2015-07-30 CN CN201510456785.8A patent/CN105049725A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403709A (en) * | 2008-10-31 | 2009-04-08 | 广东正业科技有限公司 | Appearance inspection machine for printed circuit board |
| CN102692418A (en) * | 2012-06-13 | 2012-09-26 | 北京优纳科技有限公司 | Equipment and method for detecting appearances and functions of flat panel display screens |
| CN103048333A (en) * | 2012-12-07 | 2013-04-17 | 北京优纳科技有限公司 | Appearance detection equipment and method |
| CN204761567U (en) * | 2015-07-30 | 2015-11-11 | 深圳华普通用自动化设备有限公司 | Equipment of picture in kind is acquireed in test of circuit board initial workpiece |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501708A (en) * | 2016-12-24 | 2017-03-15 | 大连日佳电子有限公司 | On on-line checking circuit board, device leakage is inserted, inserts inclined method |
| CN106525872A (en) * | 2016-12-24 | 2017-03-22 | 大连日佳电子有限公司 | Camera system for online detection of omission and deviation in insertion of devices on circuit boards |
| CN106771977A (en) * | 2016-12-31 | 2017-05-31 | 东莞市求是测试设备有限公司 | A kind of SMT intelligence initial workpiece testing equipment |
| CN107132398A (en) * | 2017-05-26 | 2017-09-05 | 重庆市铭冀电子科技有限公司 | Cell phone mainboard current detecting special purpose device |
| CN112432957A (en) * | 2020-12-10 | 2021-03-02 | 苏州特斯捷电子科技有限公司 | Tin ball automatic check out system |
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Effective date of registration: 20160505 Address after: Nanshan District New District Science Park Xili Street West Road Shenzhen Guangdong province 518000 City No. 2 east harbor 2 Building 3 floor No. 301 Applicant after: Shenzhen blue eye Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Nanhai Nanxin road de A building block 1001 Applicant before: SHENZHEN HUAPU GENERAL AUTOMATION EQUIPMENT CO., LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20151111 |