CN102338751A - Equipment for detecting circuit board defects based on visual detection method - Google Patents
Equipment for detecting circuit board defects based on visual detection method Download PDFInfo
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- CN102338751A CN102338751A CN2011101482879A CN201110148287A CN102338751A CN 102338751 A CN102338751 A CN 102338751A CN 2011101482879 A CN2011101482879 A CN 2011101482879A CN 201110148287 A CN201110148287 A CN 201110148287A CN 102338751 A CN102338751 A CN 102338751A
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 230000007547 defect Effects 0.000 title claims abstract description 26
- 230000000007 visual effect Effects 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000007599 discharging Methods 0.000 claims abstract description 32
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims description 31
- 238000009434 installation Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
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- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000004807 localization Effects 0.000 claims description 4
- 230000002950 deficient Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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Abstract
The invention discloses equipment for detecting circuit board defects based on a visual detection method. The equipment comprises a material loading module, a detection function module, a material discharging module and a control module which is used for controlling a circuit board positioning mechanism to move and performing defect detection and discharge control, wherein the material loading module is connected with an inlet of a feeding conveying belt; the outlet of the feeding conveying belt is connected with the detection function module; the circuit board positioning mechanism is arranged at the outlet of the feeding conveying belt; the detection function module is connected with the material discharging module, and comprises a detection functional module base, a cameral pedestal provided with a charge-coupled device (CCD) camera, an electromagnet baffle plate and a detection conveying belt used for conveying the circuit board to be detected; the detection conveying belt is arranged on the detection function module base; the camera pedestal is positioned above the detection conveying belt; and the electromagnet baffle plate is arranged at the outlet of the detection conveying belt. By the equipment, the accuracy is improved, the detection speed is high, and the working efficiency is high.
Description
Technical field
The present invention relates to circuit board detection device, especially a kind of circuit board defect checkout equipment.
Background technology
The main in the past manual detection method that relies on of the detection of board failure there is defectives such as easy omission, detection speed is slow, detection time is long, can not meet the needs of production.
Summary of the invention
For the deficiency that accuracy is lower, speed slow, work efficiency is lower that overcomes existing circuit board detecting method, the present invention provides a kind of and improves that accuracy, detection speed are fast, the circuit board defect checkout equipment based on visual detection method of high efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of circuit board defect checkout equipment based on visual detection method; Said circuit board defect checkout equipment comprises material loading module, measuring ability module, discharging module and the control module of moving and carrying out defects detection and discharging control in order to the control circuit board positioning mechanism; Said material loading module is connected with the inlet of feeding travelling belt; The outlet of said feeding travelling belt is connected with said measuring ability module, the exit mounting circuit boards detent mechanism of said feeding travelling belt, and said measuring ability module is connected with the discharging module mutually; Wherein
Said measuring ability module comprises measuring ability module base, the camera pedestal that ccd video camera is installed, electromagnet baffle plate and in order to carry the detection travelling belt of circuit board to be detected; Said detection travelling belt is installed on the said measuring ability module base; Said camera pedestal is positioned at said detection travelling belt top, and said electromagnet baffle plate is installed in the exit of said detection travelling belt.
Further; Said measuring ability module also comprises spacing adjusting mechanism, a fixed dam and a fender plate; Fixed dam and fender plate lay respectively at the both sides of said detection travelling belt; Said spacing adjusting mechanism is made up of an alternating current generator and double-screw bolt, and said spacing adjusting mechanism is installed on said measuring ability module chassis side, and the output shaft of said alternating current generator is fixedly connected with said double-screw bolt; Said double-screw bolt and said measuring ability module base form screw pair, and said double-screw bolt is terminal to be fixedly connected with said fender plate.
Further, said measuring ability module also comprises the secondary light source that is used for auxiliary said ccd video camera shooting, and said secondary light source is installed on around the said camera pedestal.
Further again; Said material loading module comprises material loading module base, is with feed mechanism and material loading frame synchronously; Said material loading frame is installed in said material loading module base with synchronous band feed mechanism; Said synchronous band feed mechanism comprises synchronizing wheel, vertical supporting bar, a pair of two-sided synchronous band, two pairs of bevel gear drive mechanisms and two drive stepping motor; The synchronizing wheel of installation up and down of said vertical supporting bar, said synchronous band is sleeved on the said synchronizing wheel, and said drive stepping motor is in transmission connection through said bevel gear drive mechanism and said two-sided synchronous band.
Said material loading module comprises clamping spacing adjusting mechanism; Said clamping spacing adjusting mechanism comprises base for supporting, adjustable distance objective table, pulley, spacing adjustment drive motor and double-screw bolt; Said base for supporting is installed on the said material loading module base; Said adjustable distance objective table is installed on the said base for supporting through pulley; The bottom of said adjustable distance objective table cooperates the formation screw pair with said double-screw bolt, said spacing adjustment drive motor is installed in a side of said material loading module base, and the driving shaft of said spacing adjustment drive motor is fixedly connected with said double-screw bolt; Said adjustable distance objective table is fixedly connected with vertical supporting bar, and the bevel gear drive mechanism that is connected with said vertical supporting bar is sleeved on the main shaft of drive stepping motor slidably.
Said discharging module comprises sorting module base, discharging travelling belt, position transducer, travelling belt push rod, discharge baffle and reverse sync band feed mechanism; Said reverse sync band feed mechanism comprises synchronizing wheel, vertical supporting bar, a pair of two-sided synchronous band, two pairs of bevel gear drive mechanisms and two drive stepping motor; The synchronizing wheel of installation up and down of said vertical supporting bar; Said synchronous band is sleeved on the said synchronizing wheel, and said drive stepping motor is in transmission connection through said bevel gear drive mechanism and said two-sided synchronous band; Said position transducer is installed on reverse sync band feed mechanism front end; Said travelling belt push rod is installed on the said sorting module base; Said travelling belt push rod is positioned at the side of said discharging travelling belt; Install between the said a pair of two-sided synchronous band and reclaim travelling belt, the release station of the inlet of said recovery travelling belt and said travelling belt push rod joins, and discharge baffle is installed in the outlet of said recovery travelling belt.
Said board positioning means comprises locating device base, positioning baffle and localization handspike; It is terminal that said board positioning means is installed on the feeding travelling belt; Said localization handspike with drive the cylinder interlock, said positioning baffle side be equipped be used to judge circuit board to be detected whether with positioning baffle near position transducer.
Said material loading frame comprises material loading frame shell and material loading frame push rod, and the inboard both sides of said material loading frame shell are equipped with equally spaced material loading frame bin, and said material loading frame push rod is installed in the material loading frame shell, and said circuit board to be detected is put in respectively on the said material loading frame bin.
Technical conceive of the present invention is: realize that based on vision detection technology circuit board defect detects.The mode that Machine Vision Detection is taken a picture through CCD obtains the image of device and PCB, relatively judges defective and fault through the processing and the analysis of computing machine then.
Described synchronous band feed mechanism cooperates the assigned address that circuit board to be detected is transported in the measuring ability module at the uniform velocity, exactly to detect with said circuit board detent mechanism; Said control module is carried out classification processing to testing circuit plate according to testing result respectively through the discharging module: certified products directly are sent to next station of production line, unacceptable product with can't judge that whether qualified circuit board reclaims through a recovery approach respectively.
Its advantage is that detection speed is fast, and the programming time is shorter, can be put into the diverse location of production line, is convenient in time find defective and fault, and production, detection are united two into one; And can shorten and find defective and fault-time; Owing to detect before this technology can be placed on reflow ovens; Can in time find the PCB defective that causes by a variety of causes, this moment correcting defect cost well below the cost that after final test and inspection, carries out, reach tens times usually.
Beneficial effect of the present invention mainly shows: adopt vision detection technology to carry out circuit board defect and detect; Defectives such as easy omission, detection speed that the manual detection method exists are slow, detection time is long have been overcome; The automatic defect of having realized circuit board detects, and has improved production efficiency.Simultaneously, feeding device is adjustable, the measuring ability device is adjustable, make this complete equipment aborning adaptive faculty improve greatly.The modular design concept of utilization is divided into a plurality of modules through functional classification with system, has made things convenient for device fabrication, assembling, collocation, adjustment.
Description of drawings
Fig. 1 is the whole assembling of a circuit board defect detection system design sketch.
Fig. 2 is the fully loaded PCB state design sketch of material loading frame.
Fig. 3 is material loading module assembling design sketch.
Fig. 4 is a locating device course of work design sketch.
Fig. 5 is a measuring ability module design sketch.
Fig. 6 is ccd video camera arrange position and coverage figure.
Fig. 7 is a discharging module design sketch.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 7; A kind of circuit board defect checkout equipment; Comprise material loading module 1, measuring ability module 2, discharging module 3 and control module 4, said material loading module is connected with travelling belt 5 mutually, and feeding travelling belt 5 is connected with measuring ability module 2 through circuit board detent mechanism 7 mutually; Said measuring ability module is connected with discharging module 3 through discharging travelling belt 6 mutually, the work of said all said modules of control module control.
With reference to Fig. 2; Said material loading frame 11 full loads are made up of material loading frame shell 8, material loading frame push rod 9, circuit board to be detected 10; The inboard both sides of said material loading frame shell are equipped with corresponding equally spaced bin; Said material loading frame push rod is worker's type rod member, and said circuit board to be detected is put in respectively on the said material loading frame bin.
With reference to Fig. 3, said material loading module is by material loading frame 11, be with feed mechanism 12, material loading module base 17 to form synchronously.
Said material loading frame 11 is installed on the said material loading module base 17 with synchronous band feed mechanism 12; Said synchronous band feed mechanism comprises synchronizing wheel, vertical supporting bar, a pair of two-sided synchronous band, two pairs of bevel gear drive mechanisms 13 and two drive stepping motor; The synchronizing wheel of installation up and down of said vertical supporting bar; Said synchronous band is sleeved on the said synchronizing wheel, and said drive stepping motor is in transmission connection through said bevel gear drive mechanism 13 and said two-sided synchronous band.
Said clamping spacing adjusting mechanism comprises base for supporting, adjustable distance objective table 14, pulley, spacing adjustment drive motor 15 and double-screw bolt; Said base for supporting is installed on the said material loading module base; Said adjustable distance objective table is installed on the said base for supporting through pulley; The bottom of said adjustable distance objective table cooperates the formation screw pair with said double-screw bolt; Said spacing adjustment drive motor is installed in a side of said material loading module base; The driving shaft of said spacing adjustment drive motor is fixedly connected with said double-screw bolt, and said adjustable distance objective table is fixedly connected with vertical supporting bar, and the bevel gear drive mechanism 13 that is connected with said vertical supporting bar is sleeved on the main shaft of drive stepping motor slidably.
Synchronous band in the said synchronous band feed mechanism adopts two-sided synchronous band, and adjacent raised line spacing equates with the spacing of adjacent bin in the said material loading frame 11.Said gear train is made up of two stepper motors, a transmission shaft, two groups of same model bevel gears, realizes a pair of synchronous band constant speed drive in the said synchronous band feed mechanism.Said adjustable distance objective table contacts with said material loading module base through pulley, and cooperates the formation screw pair with said accent spacing double-screw bolt.Said drive motor is fixed in said material loading module base one side; Driving shaft is fixed through flat key with transferring the spacing double-screw bolt; Said adjustable distance objective table 15 is fixedly connected with vertical supporting bar, and the bevel gear drive mechanism that is connected with said vertical supporting bar is sleeved on the main shaft of drive stepping motor slidably.
With reference to Fig. 4, said locating device 7 is made up of locating device base 18, positioning baffle 19, push rod 20, and said locating device is installed on travelling belt 5 ends, and is connected mutually with measuring ability module 2.Said push rod 20 is a T type push rod, by air cylinder driven.Said positioning baffle side is equipped with position transducer, be used to judge circuit board to be detected whether with positioning baffle near.
With reference to Fig. 5,6, said measuring ability module 2 is made up of the shooting frame 21 that ccd video camera is housed, fixed dam 22, detection travelling belt 23, electromagnet baffle plate 24, double-screw bolt 25, drive motor 26, fender plate 27, measuring ability module base 28.It is certain that said ccd video camera is taken in the frame two shooting frame spacings that are used to install ccd video camera; With the maximum effectively coverage of every camera is that 210mm * 300mm, institute's testing circuit plate plate Outside Dimensions scope are that 240 * 330mm-500 * 600mm is an example; Said shooting adds 5 ccd video cameras is installed; Said 5 concrete installation sites of video camera and coverage are as shown in Figure 6; A among the figure～E point is represented the ccd video camera installation site respectively, and each profile line zone is respectively the effective shooting area of corresponding ccd video camera.Said fixed dam 22 is installed on the said measuring ability module base, is used to treat testing circuit plate one lateral confinement position.Said travelling belt 23 is installed on the said measuring ability module base, is used to circuit board to be detected onward impulse is provided.Said electromagnet baffle plate 24 is installed on measuring ability module base the place ahead, is used to treat testing circuit plate the place ahead and carries out spacing or clearance.Said double-screw bolt 25 forms screw pair with measuring ability module base; Said double-screw bolt and said drive motor 26 are connected through flat key; Said double-screw bolt is terminal to be connected with said fender plate 27 through rivet, and said double-screw bolt 25, drive motor 26, completion circuit board opposite side to be detected is spacing jointly for fender plate 27.
With reference to Fig. 7, said discharging module 3 reclaims frame pull bar 32, discharging by travelling belt 6, position transducer, push rod 30, baffle plate 31, discharging and reclaims the reverse gathering-device base of frame 33, reverse sync band feed mechanism 34, travelling belt 35, deflector apron 36, discharging circuit board 37, discharging module base 38, control module 4 and form.Said travelling belt 6 is installed on the said discharging base, and an end links to each other with the measuring ability module, and the other end links to each other with next station of board production streamline.Said position transducer is installed on reverse sync band feed mechanism 34 front ends, for positioning action is played in push rod 30 work.Said push rod 30 is installed on the discharging module base by cylinder control.Said baffle plate 31, reverse sync band feed mechanism 34, travelling belt 35, deflector apron 36 are installed on the reverse gathering-device base 37 of said discharging circuit board, and principle of work is with the band feed mechanism is similar synchronously.Said discharging is reclaimed frame pull bar 32 and is installed on discharging recovery frame 33 upper ends.
The course of work of present embodiment is: described circuit board to be detected at first is pushed into said synchronous band feed mechanism by fully loaded said material loading frame; Be transported to said main belt by said synchronous band feed mechanism with step-by-step system again; At the terminal said locating device of installing of said main belt said circuit board to be detected is sent to said vision inspection apparatus assigned address; By said vision inspection apparatus said circuit board is detected then; Last described discharging module is carried out classification processing according to testing result to said circuit board, if said circuit board detecting is qualified, then is transported to next station smoothly by said secondary travelling belt; If said circuit board detecting is defective; Then said position transducer is passed to said control module with signal when this circuit board arrives assigned address; And make No. 2 cylinders accept instruction; Said circuit board is pushed defective circuit board treatment channel, and finally be collected into said defective circuit board treatment bin through the reverse gathering-device of said discharging circuit board; If can't discern; Then said position transducer is passed to said control module with signal when this circuit board arrives assigned address; And make No. 3 cylinders accept instruction; Said circuit board is pushed can't identification circuit plate treatment channel, and the reverse gathering-device of final said discharging circuit board is collected into and can't discerns treatment bin.Certain hour at interval after, the related work personnel will be to two treatment bin classification processing: said defective circuit board treatment bin directly is transported to maintenance area through fork truck and keeps in repair, and returns measuring point to be checked then again and detects again; Saidly can't identification circuit plate treatment bin be transported to the manual detection zone through fork truck; Collectedly carefully detect through the manual detection mode by the coherent detection personnel; If zero defect then directly is transported to next station; Carry out corresponding repairing, return measuring point to be checked then again and detect again if exist defective then to be transported to maintenance area.
Claims (8)
1. circuit board defect checkout equipment based on visual detection method; It is characterized in that: said circuit board defect checkout equipment comprises material loading module, measuring ability module, discharging module and the control module of moving and carrying out defects detection and discharging control in order to the control circuit board positioning mechanism; Said material loading module is connected with the inlet of feeding travelling belt; The outlet of said feeding travelling belt is connected with said measuring ability module, the exit mounting circuit boards detent mechanism of said feeding travelling belt, and said measuring ability module is connected with the discharging module mutually; Wherein
Said measuring ability module comprises measuring ability module base, the camera pedestal that ccd video camera is installed, electromagnet baffle plate and in order to carry the detection travelling belt of circuit board to be detected; Said detection travelling belt is installed on the said measuring ability module base; Said camera pedestal is positioned at said detection travelling belt top, and said electromagnet baffle plate is installed in the exit of said detection travelling belt.
2. the circuit board defect checkout equipment based on visual detection method as claimed in claim 1; It is characterized in that: said measuring ability module also comprises spacing adjusting mechanism, a fixed dam and a fender plate; Fixed dam and fender plate lay respectively at the both sides of said detection travelling belt; Said spacing adjusting mechanism is made up of an alternating current generator and double-screw bolt, and said spacing adjusting mechanism is installed on said measuring ability module chassis side, and the output shaft of said alternating current generator is fixedly connected with said double-screw bolt; Said double-screw bolt and said measuring ability module base form screw pair, and said double-screw bolt is terminal to be fixedly connected with said fender plate.
3. the circuit board defect checkout equipment based on visual detection method as claimed in claim 2; It is characterized in that: said measuring ability module also comprises the secondary light source that is used for auxiliary said ccd video camera shooting, and said secondary light source is installed on around the said camera pedestal.
4. like the described circuit board defect checkout equipment of one of claim 1～3 based on visual detection method; It is characterized in that: said material loading module comprises material loading module base, is with feed mechanism and material loading frame synchronously; Said material loading frame is installed in said material loading module base with synchronous band feed mechanism; Said synchronous band feed mechanism comprises synchronizing wheel, vertical supporting bar, a pair of two-sided synchronous band, two pairs of bevel gear drive mechanisms and two drive stepping motor; The synchronizing wheel of installation up and down of said vertical supporting bar, said synchronous band is sleeved on the said synchronizing wheel, and said drive stepping motor is in transmission connection through said bevel gear drive mechanism and said two-sided synchronous band.
5. the circuit board defect checkout equipment based on visual detection method as claimed in claim 4; It is characterized in that: said material loading module comprises clamping spacing adjusting mechanism; Said clamping spacing adjusting mechanism comprises base for supporting, adjustable distance objective table, pulley, spacing adjustment drive motor and double-screw bolt; Said base for supporting is installed on the said material loading module base; Said adjustable distance objective table is installed on the said base for supporting through pulley; The bottom of said adjustable distance objective table cooperates the formation screw pair with said double-screw bolt, said spacing adjustment drive motor is installed in a side of said material loading module base, and the driving shaft of said spacing adjustment drive motor is fixedly connected with said double-screw bolt; Said adjustable distance objective table is fixedly connected with vertical supporting bar, and the bevel gear drive mechanism that is connected with said vertical supporting bar is sleeved on the main shaft of drive stepping motor slidably.
6. like the described circuit board defect checkout equipment of one of claim 1～3 based on visual detection method; It is characterized in that: said discharging module comprises sorting module base, discharging travelling belt, position transducer; Travelling belt push rod, discharge baffle and reverse sync band feed mechanism; Said reverse sync band feed mechanism comprises synchronizing wheel, vertical supporting bar, a pair of two-sided synchronous band, two pairs of bevel gear drive mechanisms and two drive stepping motor; The synchronizing wheel of installation up and down of said vertical supporting bar, said synchronous band is sleeved on the said synchronizing wheel, and said drive stepping motor is in transmission connection through said bevel gear drive mechanism and said two-sided synchronous band; Said position transducer is installed on reverse sync band feed mechanism front end; Said travelling belt push rod is installed on the said sorting module base; Said travelling belt push rod is positioned at the side of said discharging travelling belt; Install between the said a pair of two-sided synchronous band and reclaim travelling belt, the release station of the inlet of said recovery travelling belt and said travelling belt push rod joins, and discharge baffle is installed in the outlet of said recovery travelling belt.
7. like the described circuit board defect checkout equipment of one of claim 1～3 based on visual detection method; It is characterized in that: said board positioning means comprises locating device base, positioning baffle and localization handspike; It is terminal that said board positioning means is installed on the feeding travelling belt; Said localization handspike with drive the cylinder interlock, said positioning baffle side be equipped be used to judge circuit board to be detected whether with positioning baffle near position transducer.
8. the circuit board defect checkout equipment based on visual detection method as claimed in claim 4; It is characterized in that: said material loading frame comprises material loading frame shell and material loading frame push rod; The inboard both sides of said material loading frame shell are equipped with equally spaced material loading frame bin; Said material loading frame push rod is installed in the material loading frame shell, and said circuit board to be detected is put in respectively on the said material loading frame bin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110148287 CN102338751B (en) | 2011-06-02 | 2011-06-02 | Equipment for detecting circuit board defects based on visual detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110148287 CN102338751B (en) | 2011-06-02 | 2011-06-02 | Equipment for detecting circuit board defects based on visual detection method |
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| CN102338751A true CN102338751A (en) | 2012-02-01 |
| CN102338751B CN102338751B (en) | 2013-06-19 |
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| CN 201110148287 Expired - Fee Related CN102338751B (en) | 2011-06-02 | 2011-06-02 | Equipment for detecting circuit board defects based on visual detection method |
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