CN206330549U - The online 3D dimension measuring devices of PCB components - Google Patents
The online 3D dimension measuring devices of PCB components Download PDFInfo
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- CN206330549U CN206330549U CN201621488498.1U CN201621488498U CN206330549U CN 206330549 U CN206330549 U CN 206330549U CN 201621488498 U CN201621488498 U CN 201621488498U CN 206330549 U CN206330549 U CN 206330549U
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Abstract
The utility model is related to 3D size detections field, it is particularly a kind of being capable of on-line checking and the online 3D dimension measuring devices of the high PCB components of accuracy of detection.Installing plate is provided with behind the inside of square housing, machine vision inspection agencies are provided with described installing plate；Dot laser distance-measuring device is installed on the left surface of described enclosure interior, the dot laser distance-measuring device is adapted to the position of the test side of machine vision inspection agencies.The online 3D dimension measuring devices of PCB components of the present utility model, pass through the cooperation of square housing, installing plate, machine vision inspection agencies and dot laser distance-measuring device, mechanical vision inspection technology, dot laser range measurement, absolute distance measurement are creatively changed to the special ingenious combination of processing method three in relative altitude direction, for the actual process feature of PCB production lines, the on-line measurement of the electronic component three-dimensional dimension data to being selected on pcb board is completed, and ensure that accuracy of detection.
Description
Technical field
The utility model is related to a kind of measuring apparatus, and particularly a kind of PCB components simple in construction, easy to use are online
3D dimension measuring devices.
Background technology
At present, realize that PCB component 3D size detections can use three-coordinate instrument, although high precision, but to running environment
It is required that it is harsh, and speed is slow, it is impossible to use online.It is only used for inspecting the part pcb board of production by random samples temporarily.
Other scheme is to use line laser structured light 3D imagers, and it can be used for on-line measurement.Although some nominal essences
Degree grade reaches 10-6Rice, but it is disturbed noise influence greatly, measured value error rate is high, and limited to the difference in height in measurement range
System, can only realize measurement in the range of less difference in height.Product z-axis and y-axis direction (are hung down in addition, this method can only be realized
The straight direction of motion) two dimension measures, and this one-dimensional size of x-axis can only be repaired (typically by servomotor by other means
Ensure Deng mechanical type).
Existing three-coordinate instrument is precision highest equipment to the three-dimensional vision information of product, but detection speed is slow, building ring
Border requires strict, is typically configured in the air-conditioned room of vibration very little, can only use offline, it is impossible to use on a production line.To product
Also full inspection can not be realized.
Existing linear laser scanning 3 D imaging system can be used for on-line checking, but scanning accuracy is not high, and distracter is big, and
Restricted to detecting element difference in height, for profiles, error in judgement rate is high.
Mechanical vision inspection technology has been widely applied in current PCB measurements, is using telecentric lens and conjunction
In the case of suitable camera configuration, x, y two dimensional surface position degree precision of measurement are up to 10-6Meter level is other, while machine vision technique
The automatic inspection to workpiece configurations and surface defect can be realized in the case of algorithm is reasonable.
Dot laser distance measuring sensor at present in measurement distance, in 30mm measurement ranges, precision up to 2 microns even more
It is high.
But needs are solved two problems：One is whether dot laser measurement height too discrete, data volume is not enough and without reality
Value, two be that the data that dot laser ranging is obtained are not direct element heights values, to determine conversion method, and ensure precision.
The former, through actual investigation, it is found that the measurement on most pcb boards in component short transverse has just for a small amount of element
The application prospect of reality.The latter, the utility model is determined in detection method to many planes (reference plane, member top surface etc.)
After discrete point range measurement, accurately to component height value reasonable conversion method.
Utility model content
In view of this, one of the present utility model aims to overcome that the deficiencies in the prior art there is provided a kind of PCB components
Online 3D dimension measuring devices, can not only on-line checking, occupy little space, and with fault rate is low, accuracy of detection is high
Advantage.
The utility model solves its technical problem and uses the technical scheme to be：The online 3D dimension measuring devices of PCB components,
Including square housing, behind the inside of the housing on be provided with installing plate, be provided with machine on described installing plate
Vision-based detection mechanism；Dot laser distance-measuring device is installed on the left surface of described enclosure interior, the dot laser distance
Measurement apparatus is adapted to the position of the test side of machine vision inspection agencies.
Further, described machine vision inspection agencies include camera and telecentric lens, and described camera is arranged on peace
Fill on plate, the optical position that enters of the camera lower end coordinates with telecentric lens.
Further, the lower end of described telecentric lens is combined with light filling source.
Further, described light filling source is LED.
Further, described light filling source is annular.
Further, described dot laser distance-measuring device by fixed plate be arranged on left surface on, the fixed plate with
Described installing plate is fixedly connected.
Further, it is provided with threaded connection mouth at the top of described housing.
Further, round and smooth design is done in the edges and corners of described housing.
Further, described frame ground.
Further, it is coated with Anti-static paint on described housing.
The beneficial effects of the utility model are：The online 3D dimension measuring devices of PCB components of the present utility model, pass through side
The housing of shape, installing plate, the cooperation of machine vision inspection agencies and dot laser distance-measuring device, creatively regard machine
Feel detection technique, dot laser range measurement, absolute distance measurement conversion relative altitude direction special processing method three it is ingenious
With reference to for the actual process feature of PCB production lines, completing the electronic component three-dimensional dimension data to being selected on pcb board
On-line measurement, and ensure that accuracy of detection.The modern production linear velocity of pcb board is fast, thereon the component of paster or straight cutting
Many sizes, it is necessary to which the specified size to part component is measured to realize quality control in terms of quality management and control, these
Existing x, y two-dimensional data of size, i.e. measuring cell length and width data, also there is altitude information, i.e. z-axis data, the measurement of these data
Usually require that precision is very high, and if entirely measure and can be completed within the production cycle of production line, then i.e. can be achieved to this
The product of the dimensional measurement content required a bit realizes high-precision full inspection.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram of the online 3D dimension measuring devices of PCB components of the present utility model；
Fig. 2 is the internal structure schematic diagram of the online 3D dimension measuring devices of PCB components of the present utility model；
In figure, 1-housing；2-threaded connection mouth；3-below；4-installing plate；5-camera；6-telecentric lens；7—
Light filling source；8-dot laser distance-measuring device.
Embodiment
, below will be to technology of the present utility model to make the purpose of this utility model, technical scheme and advantage clearer
Scheme is described in detail.Obviously, described embodiment is only the utility model one side point embodiment, rather than comprehensively
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Resulting all other embodiment is put, the scope that the utility model is protected is belonged to.
As shown in Figure 1 and Figure 2, the online 3D dimension measuring devices of PCB components of the present utility model, including square housing
1,3 behind the inside of the housing 1 on be provided with installing plate 4, be provided with Machine Vision Detection machine on described installing plate 4
Structure；Dot laser distance-measuring device 8 is installed on the left surface inside described housing 1, the dot laser distance-measuring device 8
It is adapted to the position of the test side of machine vision inspection agencies.The online 3D dimension measuring devices of PCB components of the present utility model,
, will be whole by the cooperation of square housing 1, installing plate 4, machine vision inspection agencies and dot laser distance-measuring device 8
All parts of detection means are integrated in housing 1, by installing whole detection means to line, realize on-line checking；Pass through
The data in the accurate measurement component z-axis direction of dot laser distance-measuring device 8, x, the y for coordinating machine vision inspection agencies to measure
2-D data, can fast and easy measure the 3D sized datas of component exactly.On the one hand avoid using linear laser 3D
The measurement limitation of dimensional measurement height space is big, and measurement interference noise is more, and fault rate is high, and on-line checking on the other hand can be achieved, reaches
The three-dimensional dimension full inspection requirement for the component specified on to pcb board.
Include camera 5 and telecentric lens 6 as preferred, described machine vision inspection agencies, described camera 5 is installed
On installing plate 4, the optical position that enters of the lower end of camera 5 coordinates with telecentric lens 6.Telecentric lens 6 coordinate camera 5 conveniently accurate
Really take pictures, obtain the 2-D data of component.
Light filling source 7 is combined with as the lower end of preferred, described telecentric lens 6.Mended for camera 5 in described light filling source 7
Light, improves the photographic property of camera 5, so as to improve the accuracy of x, y 2-D data.
It is LED as preferred, described light filling source 7.LED has the advantages that energy consumption is small, it is low to generate heat, in light filling
The interference being imaged to camera 5 has been reduced as far as simultaneously.
It is annular as preferred, described light filling source 7.The light filling source 7 of annular can equably light filling, improve phase
The photographic property of machine 5, so as to improve the accuracy of x, y 2-D data.
It is arranged on as preferred, described dot laser distance-measuring device 8 by fixed plate on left surface, the fixed plate
It is fixedly connected with described installing plate 4.Described fixed plate is connected with installing plate 4 so that dot laser distance-measuring device 8
More closely fixed with computer vision testing agency, being integrally formed improves the accuracy of the three-dimensional data measured.
The top of preferred, described housing 1 is provided with threaded connection mouth 2.The setting for being threadedly coupled mouth 2 can be square
Just dismantle and install, and can adjust the distance of the online 3D dimension measuring devices of whole PCB components and component to be measured,
It is flexible and convenient to use.
Round and smooth design is done as the edges and corners of preferred, described housing 1.The corner angle of housing 1 refer to each edge of housing 1
Rib and the corner of arris formation, do after round and smooth design, can reduce the damage to PCB components, it is therefore prevented that be unexpected to scratch, damage
Bad component.
It is grounded as preferred, described housing 1.Described housing 1 is grounded, and refers to electrical connection the earth, it would be possible to produce
Electrostatic import the earth, reduce the damage to component.
As being coated with Anti-static paint on preferred, described housing 1.It can be disturbed with minimizing electrostatic, improve the standard of measurement
True property.
As one kind preferred embodiment, measured using the above-mentioned online 3D dimension measuring devices of PCB components
When can using following steps carry out：
A, the online 3D dimension measuring devices of PCB components are embedded in PCB production lines, are sent pcb board by transfer mechanism
Enter position to be picked up and stop fixing；
B, according to pre-determined PCB product parameter, the online 3D dimension measuring devices of PCB components are moved on PCB and selected
Fixed number position is taken pictures, and whole pcb board x, y two-dimensional position is determined；
C, it is determined that on the basis of PCB two-dimensional positions, by the online 3D dimension measuring devices accurate movement of PCB components to PCB
Upper selected some reference point locations, carry out distance between reference measurement；
The online 3D dimension measuring devices of PCB components are moved to pcb board each component locations to be picked up by d, motion
Top, by camera 5 after each location point is taken pictures, obtains waiting x, y 2-D data for picking up each component, while outside to component
Profile and surface carry out defects detection；
If e, to need to be picked up component exterior contour and surface defects detection result be that component is unqualified, no longer carry out
Short transverse is measured, the detection end-of-job of pcb board；If needing to be picked up component exterior contour and surface defects detection result
It is qualified, then the height for saving the online 3D dimension measuring devices of PCB components is adjusted by motion, on each component
Surface carries out range measurement, obtains the data in component z directions.In step e, component exterior contour to be picked up and surface defect inspection
Survey result be it is qualified, the machine vision algorithms of machine vision inspection agencies provide each component upper surface to be picked up each treat
Measuring point coordinate Data Concurrent gives motion, and motion adjusts PCB components after line 3D dimension measuring device height, pressed
Resulting coordinate data carries out range measurement to each component upper surface successively in x-axis and y-axis direction, is obtained with step c
Distance between reference value combine, adjust whole height with reference to motion, calculate component highly, thus obtain first device
The data in part z directions.The data in described component z-axis direction, meet z=m+h-n, wherein, m is in component periphery choosing
Take after several datum marks measurements, the distance value of the online 3D dimension measuring devices of the average value taken, i.e. PCB components to pcb board；h
Moved up for motion so that the distance that the online 3D dimension measuring devices of PCB components are moved up；Now measure first device
The distance from top value of part is after n, component height is then z=m+h-n.It is worth noting that, described transfer mechanism is general
Refer to electrically driven (operated) conveyor-belt apparatus, motion is usually rapidly and accurately to be moved using pneumatic mode.
The online 3D dimension measuring devices of PCB components of the present utility model, are regarded by square housing, installing plate, machine
The cooperation of testing agency and dot laser distance-measuring device is felt, creatively by mechanical vision inspection technology, dot laser distance
Measurement, the special ingenious combination of processing method three in absolute distance measurement conversion relative altitude direction, for the reality of PCB production lines
Border process characteristic, completes the on-line measurement of the electronic component three-dimensional dimension data to being selected on pcb board, and ensure that detection
Precision.The modern production linear velocity of pcb board is fast, and the component size of paster or straight cutting is various thereon, in terms of quality management and control,
Need to measure to realize quality control the specified size of part component, existing x, y two-dimensional data of these sizes is surveyed
Element length and width data are measured, also have altitude information, i.e. z-axis data, the measurement of these data usually requires that precision is very high, and whole
If measurement can be completed within the production cycle of production line, then the product to the dimensional measurement content of these requirements can be achieved
Realize high-precision full inspection.
The above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed
Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the power
The protection domain that profit is required is defined.
Claims (10)
- The online 3D dimension measuring devices of 1.PCB components, it is characterised in that：Including square housing (1), in the housing (1) Installing plate (4) is provided with (3) behind inside, machine vision inspection agencies are provided with described installing plate (4)；Institute Dot laser distance-measuring device (8) is installed on the left surface for housing (1) inside stated, the dot laser distance-measuring device (8) It is adapted to the position of the test side of machine vision inspection agencies.
- 2. the online 3D dimension measuring devices of PCB components according to claim 1, it is characterised in that：Described machine is regarded Feel that testing agency includes camera (5) and telecentric lens (6), described camera (5) is arranged on installing plate (4), under the camera (5) The optical position that enters at end coordinates with telecentric lens (6).
- 3. the online 3D dimension measuring devices of PCB components according to claim 2, it is characterised in that：Described telecentric mirror The lower end of head (6) is combined with light filling source (7).
- 4. the online 3D dimension measuring devices of PCB components according to claim 3, it is characterised in that：Described light filling source (7) it is LED.
- 5. the online 3D dimension measuring devices of PCB components according to claim 4, it is characterised in that：Described light filling source (7) it is annular.
- 6. the online 3D dimension measuring devices of PCB components according to claim 1, it is characterised in that：Described dot laser Distance-measuring device (8) is arranged on left surface by fixed plate, and the fixed plate is fixedly connected with described installing plate (4).
- 7. the online 3D dimension measuring devices of PCB components according to claim 1, it is characterised in that：Described housing (1) Top be provided with threaded connection mouth (2).
- 8. the online 3D dimension measuring devices of PCB components according to claim 1, it is characterised in that：Described housing (1) Edges and corners do round and smooth design.
- 9. the online 3D dimension measuring devices of PCB components according to claim 1, it is characterised in that：Described housing (1) Ground connection.
- 10. the online 3D dimension measuring devices of PCB components according to claim 1, it is characterised in that：Described housing (1) Anti-static paint is coated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488498.1U CN206330549U (en) | 2016-12-30 | 2016-12-30 | The online 3D dimension measuring devices of PCB components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488498.1U CN206330549U (en) | 2016-12-30 | 2016-12-30 | The online 3D dimension measuring devices of PCB components |
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| Publication Number | Publication Date |
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| CN206330549U true CN206330549U (en) | 2017-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767437A (en) * | 2016-12-30 | 2017-05-31 | 上海权纳智能科技有限公司 | The online 3D dimension measuring devices of PCB components and method |
| CN108917677A (en) * | 2018-07-19 | 2018-11-30 | 福建天晴数码有限公司 | Cube room inside dimension measurement method, storage medium |
-
2016
- 2016-12-30 CN CN201621488498.1U patent/CN206330549U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767437A (en) * | 2016-12-30 | 2017-05-31 | 上海权纳智能科技有限公司 | The online 3D dimension measuring devices of PCB components and method |
| CN108917677A (en) * | 2018-07-19 | 2018-11-30 | 福建天晴数码有限公司 | Cube room inside dimension measurement method, storage medium |
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