CN110987807A - Online detection device capable of realizing AOI intelligent optical detection and control method - Google Patents
Online detection device capable of realizing AOI intelligent optical detection and control method Download PDFInfo
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Abstract
The invention provides an online detection device capable of realizing AOI intelligent optical detection and a control method thereof, wherein the online detection device comprises a rack (10), the rack is provided with a supporting flat plate (11) capable of supporting a circuit board (16) to be detected, and the supporting flat plate is provided with a length direction (12) and a width direction (13) perpendicular to the length direction. The intelligent optical AOI online detection device also comprises a feeding device (17), a group of two-dimensional moving assemblies, a headstock (30), a lifting guide rail (31), a camera device (32), a display unit and a detection control unit (100). The invention automatically scans PCBA products through a high-definition CCD camera, collects images, compares the tested detection points with qualified parameters in a database, inspects the defects on the target products through image processing, and displays and marks the defects through a display or an automatic mark for maintenance personnel to repair and SMT engineers to improve the process.
Description
Technical Field
The invention is applied to the optical detection of the circuit board. The invention relates to an online detection device capable of realizing AOI intelligent optical detection and a control method.
Background
The existing electronic components are electrically connected by using a Printed Circuit Board (PCB) as a support body, the PCB is manufactured by adopting an electronic printing technology, the error of manual wiring is avoided, and automatic insertion or mounting, automatic tin soldering and automatic detection of the electronic components can be realized. However, this also entails various problems in electronic printing, such as those arising in solder paste printing: presence or absence of solder paste, offset, less solder, more solder, open circuit, continuous solder, contamination, etc.; part defect: missing, offset, skew, tombstone, side-standing, turned, wrong, OCV, damage, reverse polarity of capacitance, etc.; welding spot defects after wave soldering and furnace: more tin, less tin, insufficient solder, continuous tin, copper foil pollution, and the like. The present invention addresses the above-mentioned problems by providing a detection device to ensure quality control of electronic products and process quality.
Disclosure of Invention
The invention aims to provide on-line detection equipment capable of realizing AOI intelligent optical detection, which automatically scans PCBA products through a high-definition CCD camera, acquires images, compares the detected points with qualified parameters in a database, inspects defects on target products through image processing, displays and marks the defects through a display or an automatic mark, and is used for maintenance personnel to repair and SMT engineering personnel to improve the process.
The invention also aims to provide an online detection control method capable of realizing AOI intelligent optical detection.
The invention provides an on-line detection device capable of realizing AOI intelligent optical detection, which comprises a rack, wherein the rack is provided with a supporting flat plate capable of supporting a circuit board to be detected, and the supporting flat plate is provided with a length direction and a width direction vertical to the length direction. The AOI intelligent optical detection equipment further comprises a feeding device, a group of two-dimensional moving assemblies, a head frame, a lifting guide rail, a camera device, a display unit and a detection control unit.
The feeding device is arranged on the frame and is provided with a pair of feeding conveyor belts. The pair of feeding conveyor belts are parallel to each other and are sequentially arranged along the width direction. The pair of feeding conveyor belts is fixed on the frame and has a conveying surface between the pair of feeding conveyor belts. The transport plane is parallel to the support plate. The feeding conveyor belt can convey the circuit board to be detected to a detection stop position from an initial conveying position under the driving of a conveying motor.
The two-dimensional moving assembly comprises a pair of width guide rails, a pair of detection head support columns, a beam frame and a length guide rail. The pair of width guide rails are parallel to each other and are sequentially arranged along the width direction. The extending direction of the width guide rail is parallel to the width direction and is arranged on the frame. The detection head support column is provided with a column extending direction. The detection head support column is provided with a first end and a second end along the extension direction of the column body. The first end can be arranged on the width guide rail in a slidable manner along the extension direction of the width guide rail under the driving of a width direction motor. The beam mount is fixed to the second end and has a beam body parallel to the length direction. And a length guide rail fixed to the beam frame and extending in a direction parallel to the longitudinal direction.
The head frame can be arranged on the length guide rail in a sliding mode along the extending direction of the length guide rail under the driving of a length direction motor.
The lifting guide rail is arranged on the headstock and extends along a lifting direction vertical to the supporting flat plate. One end of the lifting guide rail, which is far away from the machine frame, can face the supporting flat plate.
The camera shooting device is arranged on the lifting guide rail in a sliding way through a lifting motor. The camera device is provided with a camera capable of acquiring images, an image acquisition output end capable of outputting acquired images and an acquisition trigger port for driving the camera to acquire the images. The camera can be towards the detection stop position of pay-off conveyer belt.
The display unit has a display data input port and has a display screen.
The detection control unit comprises a plurality of input ports and a plurality of output driving ports. A plurality of input ports are connected with the image acquisition output end of the camera device. The output driving ports are respectively and electrically connected with a driving interface of the lifting motor, a driving interface of the width direction motor, a driving interface of the length direction motor, a control interface of the transmission motor, a collection triggering port and a display data input port.
A control unit performing steps configured to:
step S101, after receiving the starting information, sending driving information of a transmission motor to a control interface of the transmission motor; the conveying motor drives the feeding conveying belt to transmit according to the driving information of the conveying motor, so that the circuit board to be detected is conveyed from an initial conveying position to a detection stopping position.
And S102, the control unit sends lifting driving information, width direction driving information and length direction driving information to a driving interface of a lifting motor, a driving interface of a width direction motor and a driving interface of a length direction motor according to locally pre-stored motor control information so as to enable the camera to face the direction of the circuit board to be detected.
Step S103, the control unit sends acquisition driving information to an acquisition triggering port; the camera collects the current image and inputs the current image to the display data input port through the image collection output end.
The display screen displays a current image.
In another exemplary embodiment of the detection device, it further comprises a position sensor, which is located at the detection stop position. The position sensor has a position sensing terminal and a position sensing output terminal. After the position sensing end is sheltered from, position sensor can pass through position sensing output position response information.
In another exemplary embodiment of the detection device, the position-sensitive output of the position sensor is connected to the input port of the detection control unit.
Step S102 further includes that, after the detection control unit receives the output position sensing information, the control unit sends the lifting driving information, the width direction driving information and the length direction driving information to the driving interface of the lifting motor, the driving interface of the width direction motor and the driving interface of the length direction motor according to the locally pre-stored motor control information, so that the camera faces the direction of the circuit board to be detected.
In another exemplary embodiment of the detection apparatus, step S102 includes:
and step S1021, the control unit sends acquisition driving information to the acquisition triggering port, and the camera acquires the current positioning image.
In step S1022, the control unit extracts the current two-dimensional position information of the circuit board to be detected from the current positioning image, and obtains the driving information of the first width-direction motor and the driving information of the first length-direction motor according to the current two-dimensional position information.
In step S1023, the drive information of the first width direction motor and the drive information of the first length direction motor are transmitted to the drive interface of the width direction motor and the drive interface of the length direction motor.
And step S1024, sending lifting driving information to a driving interface of the lifting motor according to the locally pre-stored set lifting motor control information so as to enable the camera to face the direction of the circuit board to be detected.
In another exemplary embodiment of the inspection apparatus, a vacuum chuck is provided on the pair of feeding conveyors and located at the inspection stop position. The vacuum chuck has a suction plate having a suction surface. A plurality of adsorption holes and a vacuum extractor are formed on the adsorption surface. The vacuum-pumping device has a suction pipe and a suction pump. The exhaust pipe is communicated with the adsorption hole. The suction pump has a suction port capable of drawing a vacuum. The air exhaust port is communicated with an air exhaust pipe. The pump has a pump activation control terminal for enabling activation thereof.
In another exemplary embodiment of the inspection apparatus, the suction surface of the vacuum chuck further has a plurality of concentric ring grooves formed thereon, which are centered on the center of each suction hole. The plurality of concentric ring grooves are respectively communicated with each adsorption hole. The depth of the plurality of concentric ring grooves gradually decreases from the position near the adsorption holes to the position away from the adsorption holes.
In another exemplary embodiment of the inspection apparatus, the bottom of the plurality of concentric ring grooves is arc-shaped; the plurality of adsorption holes are uniformly distributed on the adsorption surface.
In another exemplary embodiment of the detection device, the output drive port of the detection control unit is further connected to a pump start control terminal of the suction pump. In step S101 executed by the detection control unit, it is further arranged to:
after the circuit board to be detected is transmitted to a detection stop position from an initial transmission position, the detection control unit sends pump starting information to the pump starting control end so as to start the air suction pump.
The invention also provides an online detection control method capable of realizing the AOI intelligent optical detection, which can realize the image acquisition of the circuit board to be detected, and the control method of the AOI intelligent optical online detection comprises the following steps:
and step S101, after receiving the starting information, the control unit sends driving information of the transmission motor to a control interface of the transmission motor. The conveying motor drives the feeding conveying belt to transmit according to the driving information of the conveying motor, so that the circuit board to be detected is conveyed from an initial conveying position to a detection stopping position.
And S102, the control unit sends lifting driving information, width direction driving information and length direction driving information to a driving interface of a lifting motor, a driving interface of a width direction motor and a driving interface of a length direction motor according to locally pre-stored motor control information so as to enable the camera to face the direction of the circuit board to be detected.
Step S103, the control unit sends acquisition driving information to an acquisition triggering port, and the camera acquires a current image and inputs the current image to a display data input port of the display screen through an image acquisition output end; the display screen displays a current image.
In another exemplary embodiment of the control method, step S102 includes:
step S1021, the control unit sends acquisition driving information to the acquisition trigger port; the camera collects the current positioning image.
In step S1022, the control unit extracts the current two-dimensional position information of the circuit board to be detected from the current positioning image, and obtains the driving information of the first width-direction motor and the driving information of the first length-direction motor according to the current two-dimensional position information.
In step S1023, the drive information of the first width direction motor and the drive information of the first length direction motor are transmitted to the drive interface of the width direction motor and the drive interface of the length direction motor.
And step S1024, sending lifting driving information to a driving interface of the lifting motor according to the locally pre-stored set lifting motor control information so as to enable the camera to face the direction of the circuit board to be detected.
The characteristics, technical features, advantages and implementation manners of the online detection equipment and the online monitoring control method of the intelligent optical AOI will be further described in a clear and easy manner with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram for illustrating the structure of an AOI inspection apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic diagram for explaining a configuration of an image pickup apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic diagram for explaining a connection relationship of the control unit in one embodiment of the present invention.
Fig. 4 is a schematic diagram for explaining the steps performed by the control unit in one embodiment of the present invention.
Fig. 5 is a schematic configuration diagram for explaining step S102 in fig. 4 according to an embodiment of the present invention.
Fig. 6 is a schematic diagram illustrating a structure of a vacuum chuck according to an embodiment of the present invention.
Description of the reference symbols
10 machine frame
11 support flat plate
12 longitudinal direction
13 width direction
14 width guide rail
15 length guide rail
16 circuit board to be detected
17 feeding device
18 feeding conveyer belt
19 conveying surface
20 detection head support column
21 first end
22 second end
23 Beam frame
24 beam body
30 head rack
31 lifting guide rail
32 image pickup device
33 pick-up head
34 lifting direction
100 control unit
101 input port
102 output drive port
201 image acquisition output
202 position sensing output
301 drive interface for a lift motor
Drive interface for 302 width direction motor
Driving interface of 303 length direction motor
304 control interface of transmission motor
305 acquisition trigger port
306 display data input port
307 pump start control end
Detailed Description
In order to more clearly understand the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative. For the sake of simplicity, the drawings only schematically show the parts relevant to the present exemplary embodiment, and they do not represent the actual structure and the true scale of the product.
FIG. 1 is a schematic diagram for illustrating the structure of an AOI inspection apparatus according to an embodiment of the present invention. Referring to fig. 1, the present invention provides an on-line inspection apparatus capable of performing intelligent optical inspection of AOI, which includes a frame 10, the frame 10 having a support plate 11 capable of supporting a circuit board 16 to be inspected, the support plate 11 having a length direction 12 and a width direction 13 perpendicular to the length direction 12. The AOI intelligent optical inspection apparatus further includes a feeding device 17, a set of two-dimensional moving assemblies, a head carriage 30, a lifting rail 31, a camera 32, a display unit, and an inspection control unit 100.
The feeding device 17 is provided to the frame 10 and has a pair of feeding belts 18. The pair of feed conveyors 18 are parallel to each other and arranged in order in the width direction 13. A pair of feed conveyors 18 are secured to the frame 10 and have a conveying surface 19 between the pair of feed conveyors 18. The transport surface 19 is parallel to the support plate 11. The feeder conveyor 18 is capable of transporting the circuit boards 16 to be tested from a starting transport position to a testing stop position under the drive of a conveyor motor.
The two-dimensional motion assembly includes a pair of width rails 14, a pair of test head support columns 20, a beam mount 23, and a length rail 15. The pair of width guide rails 14 are parallel to each other and arranged in order in the width direction 13. The extending direction of the width guide 14 is provided to the frame 10 in parallel to the width direction 13. The test head support post 20 has a cylindrical extension. The test head support post 20 has a first end 21 and a second end 22 along the direction of extension of the post. The first end 21 is slidably provided to the width rail 14 in the extending direction of the width rail 14 by the driving of the motor in one width direction 13. A beam 23 is secured to the second end 22 and has a beam body 24 parallel to the length direction 12. And a length guide 15 fixed to the beam frame 23 and extending in parallel with the longitudinal direction 12.
The head frame 30 is slidably disposed on the length rail 15 along the extending direction of the length rail 15 by a length motor.
The lifting rail 31 is provided to the head frame 30 and extends in a lifting direction perpendicular to the support plate 11. The end of the lifting rail 31 facing away from the frame 10 can be directed towards the support plate 11.
Fig. 2 is a schematic diagram for explaining a configuration of an image pickup apparatus according to an embodiment of the present invention. Referring to fig. 2, the image pickup device 32 is slidably provided to the elevating guide rail 31 by an elevating motor. The camera device 32 has a camera 33 capable of capturing images, an image capturing output terminal 201 capable of outputting captured images, and a capturing trigger port 305 for driving the camera 33 to capture images. The camera 33 can be directed towards a detection stop position of the feed conveyor 18.
The display unit has a display data input port 306 and has a display screen.
Fig. 3 is a schematic diagram for explaining a connection relationship of the control unit in one embodiment of the present invention. Referring to fig. 3, the detection control unit 100 includes a plurality of input ports 101 and a plurality of output driving ports 102. The input ports 101 are connected to an image capture output port 201 of the imaging device 32. The output driving ports 102 are electrically connected to a driving interface 301 of the elevator motor, a driving interface 302 of the width direction motor, a driving interface 303 of the length direction motor, a control interface 304 of the transfer motor, an acquisition triggering port 305, and a display data input port 306, respectively.
Fig. 4 is a schematic diagram for explaining the steps performed by the control unit in one embodiment of the present invention. Referring to fig. 4, the control unit 100 performs steps configured to:
step S101, after receiving the starting information, sending driving information of the transmission motor to a control interface 304 of the transmission motor; the conveying motor drives the feeding conveyor belt 18 to drive according to the driving information of the conveying motor, so that the circuit board 16 to be detected is conveyed from a starting conveying position to a detection stopping position.
In step S102, the control unit 100 sends the lifting driving information, the width driving information, and the length driving information to the driving interface 301 of the lifting motor, the driving interface 302 of the width motor, and the driving interface 303 of the length motor according to the locally pre-stored motor control information, so that the camera 33 faces the circuit board 16 to be detected.
Step S103, the control unit 100 sends acquisition driving information to the acquisition trigger port 305; the camera 33 captures a current image and inputs the current image to the display data input port 306 through the image capture output port 201.
The display screen displays a current image.
In the implementation of the present invention, the circuit board 16 to be detected is placed on the conveying surface 19 of the feeding device 17, the detection device is started, the start information is output to the detection control unit 100, the control interface 304 of the conveying motor sends the driving information of the driving motor and drives the feeding conveying belt 18 to drive according to the driving information, so that the circuit board 16 to be detected is conveyed from the initial position to the detection stop position. The detection control unit 100 sends the width-direction driving information and the length-direction driving information to the driving interface 302 of the width-direction motor and the driving interface 303 of the length-direction motor according to the locally pre-stored motor control information, and drives the first end 21 of the detection head support 20 to slide on the width rail 14 along the extending direction of the width rail 14 and the head frame 30 to slide on the length rail 15 along the extending direction of the length rail 15 according to the driving information. The detection control unit 100 sends the lifting driving information to the driving interface 301 of the lifting motor and drives the camera device 32 to slide on the lifting guide rail 31 according to the driving information, so that the camera 33 can face the detection stop position of the feeding conveyor belt 18. The control unit 100 sends acquisition driving information to the acquisition triggering port 305 of the camera device 32, the camera 33 acquires a current image and inputs the current image to the display data input port 306 through the image acquisition output end 201, and finally the image is transmitted to the display screen for display.
The intelligent optical AOI online detection equipment has the beneficial effects that in the automatic detection process, the machine automatically scans the PCB through the camera, acquires images, compares the tested welding points with qualified parameters in the database, inspects the defects on the PCB through image processing, and displays and marks the defects through the display or the automatic mark for the repair personnel to repair. Various different mounting errors and welding defects on the PCB are automatically detected by using a high-speed high-precision vision processing technology. The PCB board can range from a fine pitch high density board to a low density large size board, and can provide an on-line inspection scheme to improve production efficiency, and soldering quality. By using the device, errors are searched and eliminated early in the assembly process to achieve good process control. Early detection of defects will avoid sending a damaged board to a subsequent assembly stage, reducing repair costs and avoiding scrapping of non-repairable circuit boards.
In another exemplary embodiment of the detection device, it further comprises a position sensor, which is located at the detection stop position. The position sensor has a position sensing terminal and a position sensing output terminal 202. When the position sensing terminal is shielded, the position sensor can output position sensing information through the position sensing output terminal 202.
In another exemplary embodiment of the detection device, the position sensing output 202 of the position sensor is connected to the input port 101 of the detection control unit 100.
Step S102 further includes that, after the detection control unit 100 receives the output position sensing information, the control unit 100 sends the lifting driving information, the width driving information, and the length driving information to the driving interface 301 of the lifting motor, the driving interface 302 of the width motor, and the driving interface 303 of the length motor according to the locally pre-stored motor control information, so that the camera 33 faces the direction of the circuit board 16 to be detected.
Fig. 5 is a schematic configuration diagram for explaining step S102 in fig. 4 according to an embodiment of the present invention. Referring to fig. 5, step S102 includes:
in step S1021, the control unit 100 sends acquisition driving information to the acquisition triggering port 305, and the camera 33 acquires the current positioning image.
In step S1022, the control unit 100 extracts the current two-dimensional position information of the circuit board 16 to be detected from the current positioning image, and obtains the driving information of the first width-direction motor and the driving information of the first length-direction motor according to the current two-dimensional position information.
In step S1023, the drive information of the first width direction motor and the drive information of the first length direction motor are transmitted to the drive interface 302 of the width direction motor and the drive interface 303 of the length direction motor.
Step S1024, sending lifting driving information to the driving interface 301 of the lifting motor according to the preset lifting motor control information pre-stored locally, so that the camera 33 faces the direction of the circuit board 16 to be detected.
Fig. 6 is a schematic diagram illustrating a structure of a vacuum chuck according to an embodiment of the present invention. Referring to FIG. 6, in the illustrated embodiment, a vacuum chuck 40 is also included and is positioned on the pair of feeder conveyors 18 at the inspection station. The vacuum chuck 40 has a suction plate 41 having a suction surface 42. A plurality of suction holes 43 and a vacuum pumping means 44 are formed on the suction surface 42. The vacuum pumping device 44 has a suction pipe 45 and a suction pump 46. The suction pipe 45 communicates with the suction hole 43. The suction pump 46 has a suction port capable of drawing a vacuum. The air exhaust port is communicated with an air exhaust pipe 45. The suction pump 46 has a pump activation control terminal 307 which enables activation thereof. The vacuum chuck 40 can closely adhere the circuit board 16 to be detected to the conveying surface 19 in an absorbing manner, so that the circuit board 16 to be detected is not easy to slide, the circuit board 16 to be detected is bent to be flat due to processing, the circuit board can completely adhere to the conveying surface 19, and the camera 33 can conveniently collect images of the circuit board 16 to be detected and return to detect and analyze the defect condition of the circuit board.
In another exemplary embodiment of the inspection apparatus, the suction surface 42 of the vacuum chuck 40 is further formed with a plurality of concentric ring grooves centered on the center of each suction hole 43. A plurality of concentric ring grooves communicate with each of the adsorption holes 43, respectively. The depth of the plurality of concentric ring grooves gradually decreases from near the suction hole 43 to away from the suction hole 43. This design can increase vacuum chuck 40 and treat the adsorption efficiency of detecting circuit board 16, makes the absorption more firm, the operation monitoring of the equipment of being convenient for.
In another exemplary embodiment of the inspection apparatus, the bottom of the plurality of concentric ring grooves is arc-shaped; the plurality of suction holes 43 are uniformly distributed on the suction surface 42.
In another exemplary embodiment of the detection apparatus, the output drive port 102 of the detection control unit 100 is also connected to a pump activation control terminal 307 of the suction pump 46. In step S101 executed by the detection control unit 100, it is further arranged to:
after the circuit board 16 to be inspected is transferred from a start transfer position to a inspection stop position, the inspection control unit 100 sends pump start information to the pump start control terminal 307 to start the suction pump 46.
The invention also provides an online detection control method capable of realizing AOI intelligent optical detection, which can realize image acquisition of a circuit board 16 to be detected as shown in FIG. 4, and the control method of AOI intelligent optical online detection comprises the following steps:
in step S101, the control unit 100 sends the driving information of the driving motor to the control interface 304 of the transfer motor after receiving the start information. The conveying motor drives the feeding conveyor belt 18 to drive according to the driving information of the conveying motor, so that the circuit board 16 to be detected is conveyed from a starting conveying position to a detection stopping position.
In step S102, the control unit 100 sends the lifting driving information, the width driving information, and the length driving information to the driving interface 301 of the lifting motor, the driving interface 302 of the width motor, and the driving interface 303 of the length motor according to the locally pre-stored motor control information, so that the camera 33 faces the circuit board 16 to be detected.
Step S103, the control unit 100 sends acquisition driving information to the acquisition triggering port 305, and the camera 33 acquires a current image and inputs the current image to the display data input port 306 of the display screen through the image acquisition output end 201; the display screen displays a current image.
In another exemplary embodiment of the control method, as shown in fig. 5, step S102 includes:
step S1021, the control unit 100 sends acquisition driving information to the acquisition trigger port 305; the camera 33 acquires a current positioning image.
In step S1022, the control unit 100 extracts the current two-dimensional position information of the circuit board 16 to be detected from the current positioning image, and obtains the driving information of the first width-direction motor and the driving information of the first length-direction motor according to the current two-dimensional position information.
In step S1023, the drive information of the first width direction motor and the drive information of the first length direction motor are transmitted to the drive interface 302 of the width direction motor and the drive interface 303 of the length direction motor.
Step S1024, sending lifting driving information to the driving interface 301 of the lifting motor according to the preset lifting motor control information pre-stored locally, so that the camera 33 faces the direction of the circuit board 16 to be detected.
It should be understood that although the present description is described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein as a whole may be suitably combined to form other embodiments as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. An on-line inspection apparatus capable of performing AOI intelligent optical inspection, comprising a frame (10), said frame (10) having a support plate (11) capable of supporting a circuit board (16) to be inspected, said support plate (11) having a length direction (12) and a width direction (13) perpendicular to said length direction (12), said AOI intelligent optical on-line inspection apparatus further comprising:
-a feeding device (17) arranged in the frame (10) and having:
a pair of feeding belts (18) which are parallel to each other and are arranged in order in the width direction (13); the pair of feeding conveyor belts (18) is fixed on the frame (10) and a conveying surface (19) is arranged between the pair of feeding conveyor belts (18); the conveying surface (19) is parallel to the support plate (11); the feeding conveyor belt (18) can convey the circuit board (16) to be detected from an initial conveying position to a detection stopping position under the driving of a conveying motor;
a set of two-dimensional moving components comprising;
a pair of width guide rails (14) which are parallel to each other and are arranged in order in the width direction (13); the extending direction of the width guide rail (14) is parallel to the width direction (13) and is arranged on the frame (10);
a pair of test head support posts (20) having a column extension direction; the detection head support column (20) is provided with a first end (21) and a second end (22) along the extension direction of the column body; the first end (21) can be arranged on the width guide rail (14) in a slidable manner along the extension direction of the width guide rail (14) under the driving of a width direction motor;
-a beam mount (23) fixed to said second end (22) and having a beam body (24) parallel to said length direction (12);
a length guide (15) fixed to the beam frame (23) and extending in a direction parallel to the length direction (12); a headstock (30) slidably provided to the length rail (15) in an extending direction of the length rail (15) by a length motor;
-a lifting guide (31) arranged on said head (30) and extending along a lifting direction (34) perpendicular to said support plate (11); one end of the lifting guide rail (31) facing away from the machine frame (10) can face the support flat plate (11);
a camera device (32) which is arranged on the lifting guide rail (31) in a sliding way through a lifting motor; the camera device (32) is provided with a camera (33) capable of acquiring images, an image acquisition output end (201) capable of outputting acquired images and an acquisition trigger port (305) for driving the camera (33) to acquire the images; the camera (33) can be oriented towards a detection stop position of the feeding conveyor belt (18);
a display unit; having a display data input port (306) and having a display screen;
a detection control unit (100) comprising,
a plurality of input ports (101) connected to an image capture output port (201) of the imaging device (32);
the output driving ports (102) are respectively and electrically connected with a driving interface (301) of the lifting motor, a driving interface (302) of the width direction motor, a driving interface (303) of the length direction motor, a control interface (304) of the transmission motor, an acquisition triggering port (305) and a display data input port (306);
the control unit (100) performing the steps configured to:
step S101, after receiving the starting information, sending driving information of a transmission motor to a control interface (304) of the transmission motor; the conveying motor drives the feeding conveying belt (18) to transmit according to the driving information of the conveying motor, so that the circuit board (16) to be detected is conveyed from an initial conveying position to a detection stopping position;
step S102, the control unit (100) sends lifting drive information, width direction drive information and length direction drive information to a drive interface (301) of the lifting motor, a drive interface (302) of the width direction motor and a drive interface (303) of the length direction motor according to locally pre-stored motor control information; so that the camera (33) faces the direction of the circuit board (16) to be detected;
step S103, the control unit (100) sends acquisition driving information to the acquisition triggering port (305); the camera (33) collects a current image and inputs the current image to the display data input port (306) through the image collection output port (201);
the display screen displays the current image.
2. The on-line measuring device of claim 1, further comprising:
a position sensor located at the detection stop position; the position sensor has a position sensing end and a position sensing output end (202); when the position sensing end is shielded, the position sensor can output position sensing information through the position sensing output end (202).
3. The in-line detection device of claim 2, wherein the position sensing output (202) of the position sensor is connected to an input port (101) of the detection control unit (100);
the step S102 further includes that, after the detection control unit (100) receives the output position sensing information, the control unit (100) sends lifting driving information, width direction driving information, and length direction driving information to a driving interface (301) of the lifting motor, a driving interface (302) of the width direction motor, and a driving interface (303) of the length direction motor according to locally pre-stored motor control information; so that the camera (33) faces the direction of the circuit board (16) to be detected.
4. The on-line detection device as claimed in claim 1, wherein the step S102 comprises:
step S1021, the control unit (100) sends acquisition driving information to the acquisition trigger port (305); the camera (33) collects a current positioning image;
step S1022, the control unit (100) extracts the current two-dimensional position information of the circuit board (16) to be detected from the current positioning image; acquiring driving information of a first width direction motor and driving information of a first length direction motor according to the current two-dimensional position information;
step S1023, the driving information of the first width direction motor and the driving information of the first length direction motor are sent to a driving interface (302) of the width direction motor and a driving interface (303) of the length direction motor;
step S1024, sending lifting driving information to a driving interface (301) of the lifting motor according to locally pre-stored set lifting motor control information; so that the camera (33) faces the direction of the circuit board (16) to be detected.
5. The on-line measuring device of claim 1, further comprising:
a vacuum chuck (40) disposed on the pair of feed conveyors (18) at the inspection stop position; the vacuum chuck (40) has a suction plate (41) having a suction surface (42); the suction surface (42) is provided with: a plurality of adsorption holes (43); and
an evacuation device (44) having,
an air suction pipe (45) communicating with the adsorption hole (43); and
a suction pump (46) having a suction port capable of drawing a vacuum; the air exhaust port is communicated with the air exhaust pipe (45); the suction pump (46) has a pump activation control terminal (307) enabling activation thereof.
6. The in-line inspection apparatus as set forth in claim 5, wherein the suction surface (42) of the vacuum chuck (40) further has formed thereon:
a plurality of concentric ring grooves centered on the center of each of the adsorption holes (43); the plurality of concentric ring grooves are respectively communicated with each adsorption hole (43); the depth of the plurality of concentric ring grooves is gradually reduced from the position close to the adsorption hole (43) to the position away from the adsorption hole (43).
7. The in-line testing device of claim 6, wherein the bottom of said plurality of concentric ring grooves is arc-shaped; the plurality of adsorption holes (43) are uniformly distributed on the adsorption surface (42).
8. The in-line detection apparatus as claimed in claim 5, wherein the output drive port (102) of the detection control unit (100) is further connected to a pump start control terminal (307) of the suction pump (46);
in step S101 executed by the detection control unit (100), it is further configured to:
after the circuit board (16) to be detected is transmitted from an initial transmission position to a detection stop position, the detection control unit (100) sends pump starting information to the pump starting control end (307); so that the suction pump (46) is started.
9. An online detection control method capable of realizing AOI intelligent optical detection is characterized in that the method can realize image acquisition of a circuit board (16) to be detected, and the control method of the AOI intelligent optical online detection comprises the following steps:
step S101, after receiving the starting information, the control unit (100) sends driving information of the transmission motor to a control interface (304) of the transmission motor; the conveying motor drives the feeding conveying belt (18) to transmit according to the driving information of the conveying motor, so that the circuit board (16) to be detected is conveyed from an initial conveying position to a detection stopping position;
step S102, the control unit (100) sends lifting driving information, width direction driving information and length direction driving information to a driving interface (301) of a lifting motor, a driving interface (302) of a width direction motor and a driving interface (303) of a length direction motor according to locally pre-stored motor control information; so that the camera (33) faces the direction of the circuit board (16) to be detected;
step S103, the control unit (100) sends acquisition driving information to an acquisition triggering port (305); the camera (33) collects a current image and inputs the current image to a display data input port (306) of a display screen through the image collection output end (201); the display screen displays the current image.
10. The control method according to claim 9, wherein the step S102 includes:
step S1021, the control unit (100) sends acquisition driving information to the acquisition trigger port (305); the camera (33) collects a current positioning image;
step S1022, the control unit (100) extracts the current two-dimensional position information of the circuit board (16) to be detected from the current positioning image; acquiring driving information of a first width direction motor and driving information of a first length direction motor according to the current two-dimensional position information;
step S1023, the driving information of the first width direction motor and the driving information of the first length direction motor are sent to a driving interface (302) of the width direction motor and a driving interface (303) of the length direction motor;
step S1024, sending lifting driving information to a driving interface (301) of the lifting motor according to locally pre-stored set lifting motor control information; so that the camera (33) faces the direction of the circuit board (16) to be detected.
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