CN111208150A - Detection device for PCB - Google Patents
Detection device for PCB Download PDFInfo
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- CN111208150A CN111208150A CN202010118409.9A CN202010118409A CN111208150A CN 111208150 A CN111208150 A CN 111208150A CN 202010118409 A CN202010118409 A CN 202010118409A CN 111208150 A CN111208150 A CN 111208150A
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- 238000001514 detection method Methods 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims description 88
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000001179 sorption measurement Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 description 11
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 6
- 210000003437 trachea Anatomy 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241000252254 Catostomidae Species 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/845—Objects on a conveyor
- G01N2021/8455—Objects on a conveyor and using position detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
- G01N2021/95646—Soldering
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- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
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- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Signal Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Specific Conveyance Elements (AREA)
Abstract
The invention relates to the technical field of detection devices, and discloses a detection device for a PCB (printed circuit board), which comprises a support, a detection table, a control module, a first camera and a second camera, wherein the first camera is arranged on the support, a transparent bedplate is arranged on the detection table and used for placing the PCB, the first camera is used for shooting the top surface of the PCB and is positioned above the bedplate, the second camera is arranged on the detection table and is positioned below the bedplate, the second camera is used for shooting the bottom surface of the PCB, and the control module is electrically connected with the first camera and the second camera respectively. According to the invention, the first camera and the second camera are arranged to shoot the bottom surface of the top surface of the PCB at the same time and send the shot bottom surface to the control module for detection, so that the top surface and the bottom surface of the PCB can be detected at the same time, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a detection device for a PCB.
Background
At present, usually shoot the PCB when detecting the PCB, and then analyze the shot image to detect whether the PCB has the defects of missing parts, wrong parts, whether the measurement pin is bent, whether the welding leg is regular and the like. The two sides of the top surface and the bottom surface of the PCB all need to be detected, and in the prior art, one side of the PCB is photographed and detected, and then the other side is photographed and detected. The PCB is detected twice, the working efficiency is lower, one set of jig needs to be designed independently aiming at the detection of each surface, and the economic cost is higher.
Disclosure of Invention
The purpose of the invention is: the utility model provides a detection device for PCB board can detect the top surface and the bottom surface of PCB board simultaneously, improves work efficiency, need not to design two sets of tools, reduces economic cost.
In order to achieve the above object, the present invention provides a detection apparatus for a PCB, including a support, a detection table, a control module, a first camera and a second camera, wherein the first camera is disposed on the support, a transparent platen is disposed on the detection table, the platen is used for placing the PCB, the first camera is used for shooting the top surface of the PCB and is located above the platen, the second camera is disposed on the detection table and is located below the platen, the second camera is used for shooting the bottom surface of the PCB, and the control module is electrically connected to the first camera and the second camera respectively.
Optionally, still include first conveyer and second conveyer, first conveyer detect the platform with the second conveyer sets gradually along the direction of transmission, the support includes first material device, second material device, edge are moved to the first track and the first drive arrangement that the direction of transmission set up, first material device that moves first camera with the second material device that moves sets gradually in on the first track, first drive arrangement with first track is connected, first drive arrangement is used for first track drives first material device that moves first camera with the second material device that moves jointly, first material device that moves is located and is close to one side of second conveyer, the second material device that moves is located and is close to one side of first conveyer.
Optionally, the control module is further electrically connected to the first conveyor, the second conveyor, the first material moving device, the second material moving device, and the first driving device, respectively.
Optionally, the second moves the material device and includes frame, adsorption apparatus structure and set up in vacuum pump on the frame, adsorption apparatus structure includes trachea, negative pressure pipe and sucking disc, the frame includes roof, bottom plate and support column, the roof with the bottom plate sets up from top to bottom, the roof with the bottom plate passes through the support column is connected, the roof with first track is connected, be equipped with the confession on the bottom plate the through-hole that negative pressure pipe passed, negative pressure pipe passes the through-hole, negative pressure pipe is located the one end of bottom plate below with the sucking disc is linked together, negative pressure pipe is located the one end of bottom plate top with the trachea is linked together, the trachea still with the vacuum pump is linked together, the vacuum pump with the control module electricity is connected.
Optionally, the second material moving device further comprises a linear driver and a spiral arm, the linear driver is arranged on the bottom plate, one end of the spiral arm is connected with the output end of the linear driver, the other end of the spiral arm is connected with the negative pressure pipe, and the linear driver is electrically connected with the control module.
Optionally, the through hole is a waist-shaped hole, and the extending direction of the waist-shaped hole points to the middle part of the bottom plate.
Optionally, at least one pair of the adsorption mechanisms is arranged, and each pair of the adsorption mechanisms is symmetrical with respect to the center of the bottom plate.
Optionally, the second material moving device further includes a first rotary driver, the first rotary driver is installed on the bottom plate, the linear driver is fixedly connected to an output end of the first rotary driver, and the first rotary driver is electrically connected to the control module.
Optionally, the second material moving device further includes a second rotary driver, the second rotary driver is disposed on the first track, an output end of the second rotary driver is connected to the top plate, and the second rotary driver is electrically connected to the control module.
Optionally, the material conveying device further comprises a second track, a third material conveying device, a second driving device and a plurality of third conveyors, wherein the third conveyors and the second conveyors are arranged side by side, the second track is fixed on the support and perpendicular to the conveying direction, the third material conveying device is arranged on the second track, the second driving device is connected with the second track, and the second driving device is used for driving the third material conveying device to move by the second track.
Compared with the prior art, the detection device for the PCB provided by the embodiment of the invention has the beneficial effects that:
the detection device for the PCB comprises a support, a detection table, a control module, a first camera and a second camera, wherein the first camera is arranged on the support, a transparent table plate is arranged on the detection table and used for placing the PCB, the first camera is used for shooting the top surface of the PCB and is positioned above the table plate, the second camera is arranged on the detection table and is positioned below the table plate, the second camera is used for shooting the bottom surface of the PCB, and the control module is electrically connected with the first camera and the second camera respectively. When the PCB is placed on the bedplate, the first camera and the second camera shoot the top surface and the bottom surface of the PCB at the same time, the first camera and the second camera send the shot images to the control module, and the control module detects whether the top surface and the bottom surface of the PCB are defective. Through setting up like this, can detect the top surface and the bottom surface of PCB board simultaneously, improve work efficiency, need not to design two sets of tools, reduce economic cost.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view illustrating the second material moving device grabbing the PCB panel to be placed on the inspection table according to the embodiment of the present invention.
Fig. 3 is a schematic diagram of a PCB board photographed by a first camera and a second camera according to an embodiment of the present invention.
Fig. 4 is a schematic view of a first material moving device in preparation for grabbing a PCB on a detection table according to an embodiment of the present invention.
Fig. 5 is a top view of a portion of the structure of an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a rotary driver and a second material moving device according to an embodiment of the invention.
Fig. 7 is an exploded view of a rotary drive and a second transfer device in accordance with an embodiment of the present invention.
Fig. 8 is a schematic partial structural view of a second material moving device according to an embodiment of the present invention.
Fig. 9 is a partial structural schematic view of another angle of the second material moving device according to the embodiment of the invention.
Fig. 10 is an exploded view of a part of the second material moving device according to the embodiment of the invention.
FIG. 11 is a schematic view of a part of the adsorption structure according to an embodiment of the present invention.
FIG. 12 is a sectional view of a part of the structure of an adsorption structure according to an embodiment of the present invention.
Fig. 13 is an exploded view of a portion of an adsorption structure according to an embodiment of the present invention.
In the figure, 1, a first conveyor; 2. a second conveyor; 3. a detection table; 4. a first track; 5. a first material moving device; 6. a first camera; 7. a rotation driving mechanism; 8. a second material moving device; 9. a control module; 1a, a third camera; 1b, a sensor; 3a, a base; 3b, a column; 3c, a bedplate; 3d, a second camera; 3e, a third track; 4a, a first working frame; 4b, a second working frame; 4c, a third working frame; 4c1, connecting hole; 4c2, annular flange; 7a, a second rotary drive; 7b, a speed reducer; 7c, a transmission mechanism; 7d, a first rotating shaft; 7d1, shaft shoulder; 7d2, flange; 7e, a bearing; 8a, a frame; 8a1, bottom panel; 8a2, support post; 8a3, top plate; 8a4, vias; 8b, a linear driver; 8c, a first rotary drive; 8d, a hinge base; 8d1, connecting plate; 8d2, a second rotating shaft; 8d3, screw thread; 8d4, first nut; 8e, a rotating arm; 8e1, first sleeve; 8e2, connecting rod; 8e3, second sleeve; 8f, a negative pressure pipe; 8f1, a first threaded pipe; 8f2, a first round tube; 8f3, step; 8f4, a second round tube; 8f5, second threaded pipe; 8g, a sucker; 8h, trachea; 8i and a second nut; 8j, a sealing ring; 8k, a joint; 10. a discharge mechanism; 10a, a second track; 10b, a third material moving device; 10c, a third conveyor.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a detection apparatus for a PCB according to a preferred embodiment of the present invention includes a support, a detection table 3, a control module 9, a first camera 6 and a second camera 3d, wherein the first camera 6 is disposed on the support, a transparent platen 3c is disposed on the detection table 3, the platen 3c is used for placing the PCB, the first camera 6 is used for shooting a top surface of the PCB and is located above the platen 3c, the second camera 3d is disposed on the detection table 3 and is located below the platen 3c, the second camera 3d is used for shooting a bottom surface of the PCB, and the control module 9 is electrically connected to the first camera 6 and the second camera 3d, respectively. The PCB is placed on the bedplate 3c, the top surface of the PCB is shot by the first camera 6, and the bottom surface of the PCB is shot by the second camera 3d through the transparent bedplate 3 c. Thereafter, the first camera 6 and the second camera 3d transmit the respective photographed images to the control module 9, and the control module 9 analyzes the images to detect whether the top and bottom surfaces of the PCB board are defective. Therefore, the top surface and the bottom surface of the PCB can be detected simultaneously, the working efficiency is improved, two sets of jigs are not required to be designed to carry out detection twice like the prior art, and the economic cost is reduced.
The detection device for the PCB of this embodiment, still include first conveyer 1 and second conveyer 2, first conveyer 1, examine test table 3 and second conveyer 2 and set gradually along the direction of transmission, the support includes first material device 5 that moves, the second moves material device 8, first track 4 and the first drive arrangement that sets up along the direction of transmission, first material device 5 first camera 6 and the second move material device 8 and set gradually on first track 4 are moved to first material device 5, first drive arrangement is connected with first track 4, first drive arrangement is used for first track 4 to drive first material device 5 first camera 6 and the second moves material device 8 and moves together, first material device 5 that moves is located the one side that is close to second conveyer 2, second material device 8 that moves is located the one side that is close to first conveyer 1. In this embodiment, the end of the first conveyor 1 away from the detection platform 3 is the feeding end of the first conveyor 1, and the end of the first conveyor 1 close to the detection platform 3 is the discharging end of the first conveyor 1. One end of the second conveyor 2 close to the detection table 3 is a feeding end of the second conveyor 2, and one end of the second conveyor 2 far away from the detection table 3 is a discharging end of the second conveyor 2. The conveying directions of the first conveyor 1 and the second conveyor 2 are that the respective feeding ends point to the respective discharging ends. When the PCB is transmitted to the discharging end of the first transmitter 1 through the first transmitter 1, the PCB is moved to the detection table 3 for detection through the second material moving device 8, and then the PCB is moved to the feeding end of the second transmitter 2 through the first material moving device 5, and the PCB is transported away through the second transmitter 2.
It should be noted here that the control module 9 is also electrically connected to the first conveyor 1, the second conveyor 2, the first material moving device 5, the second material moving device 8, and the first driving device, respectively. Thus, the control module 9 controls the start and stop of the first conveyor 1, the second conveyor 2, the first material moving device 5, the second material moving device 8 and the first driving device. The sensor 1b is installed below the working face of the first conveyor 1, the sensor 1b is installed at the discharging end of the first conveyor 1 and is electrically connected with the control module 9, when the PCB is conveyed to the discharging end of the first sensor 1b, the sensor 1b sends a signal to the control module 9, and the control module 9 controls the first conveyor 1 to stop working.
In addition, the material discharging device further comprises a material discharging mechanism 10, wherein the material discharging mechanism 10 comprises a second rail 10a, a third material moving device 10b, a second driving device and a plurality of third conveyors 10c, each third conveyor 10c and each second conveyor 2 are arranged side by side, the second rail 10a is fixed on the support and is perpendicular to the conveying direction, the third material moving device 10b is arranged on the second rail 10a, the second driving device is connected with the second rail 10a, and the second driving device is used for driving the third material moving device 10b to move by the second rail 10 a. The second track 10a, the third material moving device 10b, the second driving device and the plurality of third conveyors 10c are electrically connected with the control module 9, and the third conveyors 10c and the second conveyor 2 are arranged at equal intervals. After the top and bottom photographs of the PCB are sent to the control module 9, the control module 9 may sort the PCB. At the discharge end that the PCB board was transported to second conveyer 2, control module 9 control third moves material device 10b and snatchs the PCB board, and control module 9 control second track 10a drives third and moves material device 10b and remove to the top of the categorised third conveyer 10c of this PCB board of adaptation, and control module 9 control third moves material device 10b, places the PCB board in this third conveyer 10c, and the PCB board is transported away by third conveyer 10 c. In this embodiment, the PCBs are placed on different third conveyors 10c according to different models, so that the PCBs are sorted and discharged. In other embodiments, the classification may be performed by other factors such as the size of the PCB board and the defect cause.
First working frame 4a, second working frame 4b and third working frame 4c are fixedly arranged on first track 4, first material moving device 5 is connected with first track 4 through third working frame 4c, first camera 6 is connected with first track 4 through second working frame 4b, and second material moving device 8 is connected with first track 4 through first working frame 4 a. In this embodiment, the control module 9 is disposed on the second conveyor 2.
In the present embodiment, the first transfer device 5, the second transfer device 8, and the third transfer device 10b have the same structure, and the second transfer device 8 will be described in detail as an example.
The second material moving device 8 comprises a frame 8a, an adsorption mechanism and a vacuum pump arranged on the frame 8a, the adsorption mechanism comprises an air pipe 8h, a negative pressure pipe 8f and a sucking disc 8g, the frame 8a comprises a top plate 8a3, a bottom plate 8a1 and a supporting column 8a2, the top plate 8a3 and the bottom plate 8a1 are arranged up and down, the top plate 8a3 and the bottom plate 8a1 are connected through the supporting column 8a2, the top plate 8a3 is connected with the first rail 4, a through hole 8a4 for the negative pressure pipe 8f to pass through is formed in the bottom plate 8a1, the negative pressure pipe 8f passes through the through hole 8a4, one end, located below the bottom plate 8a1, of the negative pressure pipe 8f is communicated with the sucking disc 8g, one end, located above the bottom plate 8a1, of the air pipe 8h is communicated with the vacuum pump. The second material moving device 8 realizes grabbing and placing of the PCB through the sucker 8 g. Specifically, when the second material moving device 8 snatchs the PCB board, 8g of sucking disc pasted tightly the PCB board, and control module 9 control vacuum pump begins work, and trachea 8h, negative pressure pipe 8f and 8g of sucking disc produce the negative pressure and realize snatching the PCB board. When the second material moving device 8 places the PCB, the control module 9 controls the vacuum pump, the air pipe 8h, the negative pressure pipe 8f and the sucker 8g recover the atmospheric pressure, and the sucker 8g is separated from the PCB.
The second material moving device 8 further comprises a linear driver 8b and a spiral arm 8e, the linear driver 8b is arranged on the bottom plate 8a1, one end of the spiral arm 8e is connected with the output end of the linear driver 8b, the other end of the spiral arm 8e is connected with the negative pressure pipe 8f, and the linear driver 8b is electrically connected with the control module 9. When the control module 9 controls the linear driver 8b to work, the output end of the linear driver 8b drives the negative pressure tube 8f to move up and down in the through hole 8a4 through the spiral arm 8e, so that the sucking disc 8g moves up and down. The second material moving device 8 further comprises a hinged seat 8d, and the rotary arm 8e is connected with the output end of the linear driver 8b through the hinged seat 8 d. Articulated seat 8d includes connecting plate 8d1, second pivot 8d2 and first nut 8d4, connecting plate 8d1 fixed connection is in the output of linear drive 8b, second pivot 8d2 is 4, and 4 second pivot 8d2 set up respectively in four corners of connecting plate 8d1, the top of every second pivot 8d2 is equipped with screw thread 8d3, second pivot 8d2 and spiral arm 8e rotatable coupling, first nut 8d4 fixed connection is on screw thread 8d 3. The rotating arm 8e comprises a first sleeve 8e1, a connecting rod 8e2 and a second sleeve 8e3, one end of the connecting rod 8e2 is fixedly connected with the first sleeve 8e1, the other end of the connecting rod 8e2 is fixedly connected with the second sleeve 8e3, the second rotating shaft 8d2 is connected with the rotating arm 8e through the second sleeve 8e3, and the first sleeve 8e1 is sleeved on the negative pressure pipe 8f and is rotatably connected with the negative pressure pipe 8 f. When the output end of the linear driver 8b works, the hinge base 8d is driven to move, the hinge base 8d drives the rotary arm 8e, and the rotary arm 8e drives the negative pressure tube 8f to move. The second material moving device 8 further comprises a second nut 8i and a joint 8k, the negative pressure pipe 8f comprises a first threaded pipe 8f1, a first round pipe 8f2, a step portion 8f3, a second round pipe 8f4 and a second threaded pipe 8f5 which are coaxially arranged and sequentially connected from top to bottom, a first sleeve 8e1 is sleeved on the first round pipe 8f2, the second nut 8i is connected with the first threaded pipe 8f1, the upper end surface and the lower end surface of the first sleeve 8e1 respectively tightly abut against the second nut 8i and the step portion 8f3, the first threaded pipe 8f1 is further connected with the joint 8k, the bottom surface of the joint 8k tightly abuts against the second nut 8i, and the negative pressure pipe 8f is connected with the air pipe 8h through the joint 8 k. The suction cup 8g is connected with a second threaded pipe 8f5, and a second round pipe 8f4 passes through the through hole 8a4 and is movably connected with the through hole. This makes it possible to connect the radial arm 8e to the negative pressure tube 8 f. The inside sealing washer 8j that still is equipped with of joint 8k guarantees the leakproofness of joint 8k for the negative pressure that the vacuum pump produced transmits to negative pressure pipe 8f through joint 8k more completely.
It is worth mentioning that the through hole 8a4 is a kidney-shaped hole, and the extension direction of the kidney-shaped hole points to the middle of the bottom plate 8a 1. Further, at least one pair of the suction mechanisms is provided, and each pair of the suction mechanisms is symmetrical with respect to the center of the bottom plate 8a 1. By changing the position of the negative pressure pipe 8f in the waist-shaped hole, the second material moving device 8 can be matched with PCB boards of various sizes. Of course, in this embodiment, in order to improve the automation degree of the detection device for the PCB, the second material moving device 8 further includes a first rotary driver 8c, the first rotary driver 8c is installed on the bottom plate 8a1, the linear driver 8b is fixedly connected to the output end of the first rotary driver 8c, and the first rotary driver 8c is electrically connected to the control module 9. When the output end of the first rotary driver 8c is controlled by the control module 9 to rotate, the linear driver 8b rotates to drive the radial arm 8e to move, and the radial arm 8e drives the negative pressure tube 8f to move in the waist-shaped hole, so that the space between the suckers 8g is changed, the space between the suckers 8g is controlled, and the PCB with various sizes is adapted.
In addition, the second material moving device 8 further comprises a rotary driving mechanism 7, the rotary driving mechanism 7 comprises a second rotary driver 7a, the second rotary driver 7a is arranged on the first rail 4, an output end of the second rotary driver 7a is connected with the top plate 8a3, and the second rotary driver 7a is electrically connected with the control module 9. A third camera 1a is arranged below the working surface of the first conveyor 1, the third camera 1a is installed at the discharging end of the first conveyor 1, and the third camera 1a is electrically connected with the control module 9. When the second material moving device 8 grabs the PCB, and the PCB is suspended, the third camera 1a shoots the PCB and sends the image to the control module 9, and the control module 9 judges whether the position of the PCB deviates. When the position of PCB board takes place the skew, accessible control module 9 control second rotary actuator 7 a's output is rotatory, drives the frame 8a and rotates to the adjustment is when the position of PCB board, later on places the PCB board on examining test table 3, realizes the correction of PCB board position. The rotary driving mechanism 7 further comprises a speed reducer 7b, a transmission mechanism 7c, a first rotating shaft 7d and a bearing 7e, the output end of the second rotary driver 7a is connected with the input end of the transmission mechanism 7c through the speed reducer 7b, the output end of the transmission mechanism 7c is connected with the rotating shaft, the rotating shaft is fixedly connected to the top plate 8a3, the bearing 7e is sleeved on the rotating shaft, and the top plate 8a3 is rotatably connected with the third working frame 4c through the bearing 7 e. The third working frame 4c is provided with a connecting hole 4c1, an annular flange 4c2 extending inwards in the radial direction is arranged in the connecting hole 4c1, and the axial length of the annular flange 4c2 is half of the axial length of the connecting hole 4c 1. The bearing 7e is mounted inside the connecting hole 4c1, and the outer ring of the bearing 7e abuts against the top surface of the annular flange 4c 2. The first rotating shaft 7d is provided with a shaft shoulder 7d1 for abutting against an inner ring of the bearing 7e, the bottom end of the first rotating shaft 7d is provided with a flange 7d2, and the flange 7d2 is used for fixedly connecting a top plate 8a 3. With this structure, the top plate 8a3 is rotatably connected to the third work frame 4 c.
The detection table 3 further comprises a base 3a and a stand column 3b, the bedplate 3c and the base 3a are arranged up and down, the base 3a and the bedplate 3c are connected through the stand column 3b, and a second camera 3d is arranged on the base 3a below the bedplate 3 c. The detection table 3 further comprises a third rail 3e and a third driving device, the extending direction of the third rail 3e is perpendicular to the transmission direction of the first conveyor 1, the base 3a is connected with the third rail 3e, and the third driving device is used for driving the base 3a to move on the third rail 3e by the third rail 3 e. Set up like this, can drive and examine test table 3 and remove to realize that the PCB board can just to second camera 3d, reduce the influence that the position change acquireed the image to second camera 3d, reduce the error that detects.
The working process of the invention is as follows: the PCB board is conveyed to the output end of the first conveyor 1 from the feeding end of the first conveyor 1, the sensor 1b senses the PCB board, the second material moving device 8 grabs the PCB board and moves the material to the detection table 3, the first camera 6 and the second camera 3d shoot the top surface and the bottom surface of the PCB board respectively, the first material moving device 5 grabs the PCB board and moves the material to the feeding end of the second conveyor 2, the second conveyor 2 transports the PCB board to the discharging end of the second conveyor 2, and the third material moving device 10b grabs the PCB board and moves the material to the third conveyor 10 c.
To sum up, the embodiment of the present invention provides a detection apparatus for a PCB, which is configured with a first camera 6 and a second camera 3d to simultaneously photograph a bottom surface of a top surface of the PCB and send the bottom surface to a control module 9 for detection, so as to simultaneously detect the top surface and the bottom surface of the PCB and improve work efficiency.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The detection device for the PCB is characterized by comprising a support, a detection table, a control module, a first camera and a second camera, wherein the first camera is arranged on the support, a transparent bedplate is arranged on the detection table and used for placing the PCB, the first camera is used for shooting the top surface of the PCB and is positioned above the bedplate, the second camera is arranged on the detection table and is positioned below the bedplate, the second camera is used for shooting the bottom surface of the PCB, and the control module is electrically connected with the first camera and the second camera respectively.
2. The inspecting apparatus for PCB of claim 1, further comprising a first conveyor and a second conveyor, the first conveyor, the detection table and the second conveyor are arranged in sequence along the conveying direction, the bracket comprises a first material moving device, a second material moving device, a first track and a first driving device which are arranged along the transmission direction, the first camera and the second material moving device of the first material moving device are sequentially arranged on the first track, the first driving device is connected with the first track and used for driving the first material moving device, the first camera and the second material moving device to move together through the first track, the first material moving device is located on one side close to the second conveyor, and the second material moving device is located on one side close to the first conveyor.
3. The PCB board detection device of claim 2, wherein the control module is further electrically connected with the first conveyor, the second conveyor, the first material moving device, the second material moving device and the first driving device respectively.
4. The PCB board detection device according to claim 3, wherein the second material moving device comprises a frame, an adsorption mechanism and a vacuum pump arranged on the frame, the adsorption mechanism comprises an air pipe, a negative pressure pipe and a sucker, the frame comprises a top plate, a bottom plate and support columns, the top plate and the bottom plate are arranged up and down, the top plate and the bottom plate are connected through the support columns, the top plate is connected with the first rail, a through hole for the negative pressure pipe to pass through is formed in the bottom plate, the negative pressure pipe passes through the through hole, one end, located below the bottom plate, of the negative pressure pipe is communicated with the sucker, one end, located above the bottom plate, of the negative pressure pipe is communicated with the air pipe, the air pipe is further communicated with the vacuum pump, and the vacuum pump is electrically connected with the control module.
5. The PCB board detection device of claim 4, wherein the second material moving device further comprises a linear driver and a spiral arm, the linear driver is arranged on the bottom plate, one end of the spiral arm is connected with an output end of the linear driver, the other end of the spiral arm is connected with the negative pressure pipe, and the linear driver is electrically connected with the control module.
6. The PCB board detection device of claim 5, wherein the through hole is a waist-shaped hole, and the extension direction of the waist-shaped hole points to the middle part of the bottom plate.
7. The PCB board detection device of claim 6, wherein at least one pair of the suction mechanisms is provided, and each pair of the suction mechanisms is symmetrical about the center of the bottom plate.
8. The PCB board detection device of claim 7, wherein the second material moving device further comprises a first rotary driver, the first rotary driver is mounted on the bottom plate, the linear driver is fixedly connected to an output end of the first rotary driver, and the first rotary driver is electrically connected with the control module.
9. The PCB board detection device of claim 4, wherein the second material moving device further comprises a second rotary driver, the second rotary driver is arranged on the first rail, an output end of the second rotary driver is connected with the top plate, and the second rotary driver is electrically connected with the control module.
10. The PCB board detection device according to claim 3, further comprising a second rail, a third material moving device, a second driving device and a plurality of third conveyors, wherein the third conveyors and the second conveyors are arranged side by side, the second rail is fixed on the support and perpendicular to the conveying direction, the third material moving device is arranged on the second rail, the second driving device is connected with the second rail, and the second driving device is used for driving the third material moving device to move by the second rail.
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| CN202010118409.9A CN111208150B (en) | 2020-02-26 | 2020-02-26 | Detection device for PCB |
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| CN202010118409.9A CN111208150B (en) | 2020-02-26 | 2020-02-26 | Detection device for PCB |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112485271A (en) * | 2020-12-04 | 2021-03-12 | 余荣平 | PCB board detection device |
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