CN110508503A - A kind of product detection device based on machine vision - Google Patents
A kind of product detection device based on machine vision Download PDFInfo
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- CN110508503A CN110508503A CN201910882447.9A CN201910882447A CN110508503A CN 110508503 A CN110508503 A CN 110508503A CN 201910882447 A CN201910882447 A CN 201910882447A CN 110508503 A CN110508503 A CN 110508503A
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000005259 measurement Methods 0.000 claims abstract description 155
- 230000007246 mechanism Effects 0.000 claims abstract description 86
- 238000007689 inspection Methods 0.000 claims abstract description 71
- 238000012360 testing method Methods 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 7
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- 238000013461 design Methods 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 description 19
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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Abstract
The invention discloses a kind of product detection devices based on machine vision, workpiece is sent into measurement lid by the present invention, dimensional measurement is carried out by top surface of first machine vision inspection agencies to workpiece, simultaneously under the drive of rotating mechanism, measurement lid, which rotates a circle, to carry out dimensional measurement to whole sides of workpiece, and then the full-scale measurement of workpiece is realized, it can disposably obtain multiple size indexs of workpiece.By above-mentioned design, on the one hand, the dimensional measurement of workpiece is carried out using machine vision, measurement accuracy greatly improves, avoid manual measurement due to being influenced by skilled operation degree and degree of fatigue existing for the big problem of measurement error；On the other hand, it does not need manual operation measuring tool to measure, and the overall dimension of workpiece disposably can be obtained, measurement efficiency greatly improves.
Description
Technical field
The present invention relates to machine vision metrology fields, and in particular to a kind of product detection device based on machine vision.
Background technique
Small workpiece refers to that size is smaller, is that current domestic processing industry is general generally in 50mm simple workpiece product below
All over existing product form, small workpiece is generally based on magnetic material product, auto-parts converted products.The characteristics of small workpiece
It is that yield is big, type is more, processing accuracy is high, and wherein the high feature of processing accuracy determines it in terms of size detection
Need stringent screening.
The measurement of many small workpieces of country's industry relies primarily on manually manual using tools such as micrometer, vernier calipers at present
Measurement, this traditional measurement method have the disadvantage in that (1) each workpiece requires to measure one by one, not only expend people
Work, and under measurement efficiency is very low；(2) measurement error is big, the qualification and fatigue of the precision of manual measurement by operator
The problems such as degree is affected, and be easy to cause erroneous detection, missing inspection, causes underproof product to be easily accessible market, may give company
Cause irretrievable loss.
Summary of the invention
In order to solve the problems, such as existing small workpiece using the mesh that efficiency present in manual measurement is slow and error is big, of the invention
Be a kind of size using machine vision metrology small workpiece is provided, measurement accuracy height and the fast product testing dress of measurement efficiency
It sets.
The technical scheme adopted by the invention is as follows:
A kind of product detection device based on machine vision, including measurement lid, telescoping mechanism, rotating mechanism and industrial personal computer,
Wherein, the cross section of the measurement lid is the U-shaped structure that Open Side Down；
It is equipped in the measurement lid for detecting the first machine vision inspection agencies of workpiece top surface size and for detecting
Second machine vision inspection agencies of side surface of workpiece size；
First machine vision inspection agencies are located at the inner top surface center of the measurement lid, the second machine vision inspection
Mechanism is surveyed to be located on the inner sidewall of the measurement lid；
When the workpiece is located at the underface of first machine vision inspection agencies, stretched described in the industrial personal computer control
The work of contracting mechanism, drives the measurement housing residence to state workpiece, then controls the first machine vision inspection agencies and the second machine
The operation of vision-based detection mechanism, and control the rotating mechanism simultaneously and measurement lid rotates a circle, complete the size to the workpiece
Detection；
The industrial personal computer communicates to connect the telescoping mechanism, the rotating mechanism, first Machine Vision Detection respectively
Mechanism and second machine vision inspection agencies.
Optimization, further include the conveyer belt for transporting the workpiece, wherein the conveyer belt passes through motor driven；
Discrete on the conveyer belt to be placed with multiple workpiece, the distance between adjacent two workpiece is greater than the measurement lid
Opening length, and the measurement lid is located at the top of the conveyer belt；
The industrial personal computer communicates to connect the controlled end of the motor.
Optimization, further include the testing agency for detecting the location of workpiece, wherein the testing agency includes distance
Sensor, the range sensor communicate to connect the industrial personal computer；
The inner top surface of the measurement lid is equipped with the range sensor, wherein first machine vision inspection agencies
It is set gradually with the range sensor along workpiece direction of transfer, and the range sensor transmitting terminal is arranged straight down；
It is described when the industrial personal computer detects range sensor and the vertical range for transmitting belt surface changes
Industrial personal computer stops the rotation of the motor, and controls the telescoping mechanism work simultaneously.
Optimization, further include workpiece ejecting mechanism, when the industrial personal computer detects the off-dimension of the workpiece, institute
It states industrial personal computer control workpiece ejecting mechanism and the workpiece is released into the conveyer belt.
Optimization, institute's workpiece ejecting mechanism includes electric telescopic rod, mounting plate and push head, wherein described electronic
The push head is fixed on the telescopic end of telescopic rod, the electric telescopic rod is fixed on the mounting plate, and telescopic direction
It is vertical with the direction of transfer of the conveyer belt,
The mounting plate is vertically arranged, and by sliding equipment be slidably connected at it is described measurement lid face view inner wall on or
On the inner wall of backsight face；
When the industrial personal computer detects the off-dimension of the workpiece, the telescoping mechanism is lifted the measurement lid,
Make the mounting plate under the effect of gravity, the measurement is skidded off by the sliding equipment and is covered, while the industrial personal computer controls institute
Electric telescopic rod elongation is stated, the workpiece is released into the conveyer belt；
The industrial personal computer communicates to connect the controlled end of the electric telescopic rod.
Optimization, the sliding equipment includes mutually matched sliding rail and sliding slot；
It is respectively equipped with the sliding rail on the two sidewalls of the mounting plate, on the face view inner wall of the measurement lid or backsight face
Inner wall is equipped with the sliding slot, and the mounting plate is slidably connected at the survey by the mutual cooperation of the sliding rail and the sliding slot
Amount covers.
Optimization, the sliding rail is equipped with the first limited block, and the bottom end of the sliding slot is equipped with and the first limited block phase
Second limited block of cooperation；
When the mounting plate slides into the bottom end of the sliding slot, the first limited block on the sliding rail is overlapped on corresponding sideslip
On the second limited block in slot, the mounting plate is limited.
Optimization, first machine vision inspection agencies include that the first industrial camera and commercial measurement are flat with the first LED
Plate light source, second machine vision inspection agencies include the second LED flat plate light source of the second industrial camera and commercial measurement；
First industrial camera and the first LED flat plate light source levels are disposed side by side on the inner top surface of the measurement lid
Center, second industrial camera and the second LED flat plate light source are oppositely arranged on respectively on two inner sidewalls of measurement lid.
Optimization, the pedestal is equipped with support rod, wherein the support rod is fixedly connected described far from one end of pedestal
The bottom surface of rectangle installing frame, and keep formation triangle between the support rod, the pedestal and the rectangle installing frame three steady
Determine structure.
Optimization, the telescoping mechanism includes electric drive hydraulic thruster, wherein the telescopic end of the electric drive hydraulic thruster is fixed
Connect the top surface of the measurement lid.
Optimization, the rotating mechanism setting is between the electric drive hydraulic thruster and measurement lid, the whirler
Structure includes stepper motor, shaft and fixed plate, and the telescopic end of the electric drive hydraulic thruster is fixedly connected with the top of the fixed plate
Face center；
The fixed plate is equipped with the stepper motor, and the output shaft of the stepper motor is sequentially connected institute by shaft coupling
One end of shaft is stated, the other end of the shaft is fixedly connected with the end face center of the measurement lid.
The invention has the benefit that
(1) present invention is a kind of product detection device based on machine vision, and workpiece is first sent into measurement lid by the present invention,
Dimensional measurement is carried out by top surface of first machine vision inspection agencies to workpiece, while under the drive of rotating mechanism, measurement
Lid, which rotates a circle, to carry out dimensional measurement to whole sides of workpiece, and then realizes the full-scale measurement of workpiece, can be primary
Property obtains multiple size indexs of workpiece.
By above-mentioned design, on the one hand, the dimensional measurement of workpiece is carried out using machine vision, measurement accuracy greatly mentions
Height, avoid manual measurement due to being influenced by skilled operation degree and degree of fatigue existing for the big problem of measurement error；Another party
Face does not need manual operation measuring tool and measures, and the overall dimension of workpiece disposably can be obtained, and measurement efficiency is greatly
It improves.
(2) top of conveyer belt is arranged in measurement lid by the present invention, and is covered using range sensor detection workpiece and measurement
Position, workpiece enter measurement cover in the first machine vision inspection agencies underface when, can directly on a moving belt into
The dimensional measurement of row workpiece so that measurement lid is easier to match with workpiece production line, and then realizes workpiece by above-mentioned design
The pipelining of measurement, so that measurement efficiency further improves.
(3) present invention is additionally provided with workpiece ejecting mechanism, i.e., when industrial personal computer detects the off-dimension of workpiece, then may be used
Underproof workpiece is directly released into conveyer belt using electric telescopic rod, completes the rejecting of unqualified workpiece, is rejected without artificial,
Increase the convenience that the present apparatus uses, while can also staff be facilitated to recycle, to remanufacture.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the product detection device provided by the invention based on machine vision.
Fig. 2 is the attachment structure schematic diagram of rotating mechanism provided by the invention, measurement lid and mounting plate.
Fig. 3 is the concrete structure schematic diagram of workpiece ejecting mechanism provided by the invention.
Fig. 4 is the concrete structure schematic diagram of measurement lid provided by the invention.
Fig. 5 is the structure enlargement diagram in this Fig. 4 at A.
Fig. 6 is the specific mounting structure schematic diagram of mounting plate provided by the invention and measurement lid.
Fig. 7 is the system control block figure of the product detection device provided by the invention based on machine vision.
Appended drawing reference: 1- measurement lid；2- telescoping mechanism；3- rotating mechanism；4- workpiece；5- the first Machine Vision Detection machine
Structure；The second machine vision inspection agencies of 6-；7- conveyer belt；8- motor；9- range sensor；10- electric telescopic rod；11- installation
Plate；12- pushes head；13- sliding rail；14- sliding slot；The first limited block of 15-；The second limited block of 16-；The first industrial camera of 501-；
502- the first LED flat plate light source；The second industrial camera of 601-；602- the second LED flat plate light source；301- stepper motor；302- turns
Axis；303- fixed plate.
Specific embodiment
The present invention is further elaborated combined with specific embodiments below.It should be noted that for these implementations
The explanation of example mode is used to help understand the present invention, but and does not constitute a limitation of the invention.
Term "and/or" in text, only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A, individualism B exist simultaneously tri- kinds of situations of A and B, the terms
"/and " it is to describe another affiliated partner relationship, indicate may exist two kinds of relationships, for example, A/ and B, can indicate: individually depositing
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, typicallying represent forward-backward correlation object is a kind of "or" pass
System.
Terms used herein are only used for description specific embodiment, and it is real to be not intended to the limitation present invention/invention example
Apply example.As it is used herein, singular "a", "an" and "the" is intended to include plural form, unless civilization up and down
Really instruction contrary.It should also be understood that term " includes ", " including ", "comprising", and/or " containing " make when herein
Used time, specify stated feature, integer, step, operation, unit and/or component existence, and be not excluded for one or more
Other a features, quantity, step, operation, unit, component and/or their combination existence or increase.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the disclosure
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where disclosure range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
In addition, special characteristic, structure, function or characteristic can be combined to one or more implementations in any suitable manner
In example.For example, first embodiment can be in conjunction with second embodiment, as long as special characteristic associated with the two embodiments, knot
Structure, function or characteristic be not mutually exclusive.
Embodiment one
As shown in Fig. 1~7, the product detection device based on machine vision provided by the present embodiment, including measurement lid 1,
Telescoping mechanism 2, rotating mechanism 3 and industrial personal computer, wherein the cross section of the measurement lid 1 is the U-shaped structure that Open Side Down.
The opening of the measurement lid 1 is arranged downwards, and is equipped in the measurement lid 1 for detecting 4 top surface ruler of workpiece
The first very little machine vision inspection agencies 5 and the second machine vision inspection agencies 6 for detecting 4 lateral dimension of workpiece.
First machine vision inspection agencies 5 are located at the inner top surface center of the measurement lid 1, second machine vision
Testing agency 6 is located on the inner sidewall of the measurement lid 1.
When the workpiece 4 is located at the underface of first machine vision inspection agencies 5, described in the industrial personal computer control
Telescoping mechanism 2 works, and the measurement lid 1 is driven to cover the workpiece 4, then controls the first machine vision inspection agencies 5 and the
The operation of two machine vision inspection agencies 6, and control the rotating mechanism 3 simultaneously and rotate a circle lid 1 is measured, it completes to the work
The size detection of part 4.
The industrial personal computer communicates to connect the telescoping mechanism 2, the rotating mechanism 3, first machine vision inspection respectively
Survey mechanism 5 and second machine vision inspection agencies 6.
As shown in Figure 1, the product detection device to described based on machine vision carries out the description of specific structure below:
Dimensional measurement place of the measurement lid 1 as workpiece 4, the telescoping mechanism 2 is under the control of industrial personal computer, lifting
Or the decline measurement lid 1, wherein when needing to carry out dimensional measurement to workpiece 4, industrial personal computer controls telescoping mechanism and stretches, and makes
It measures lid 1 to decline, covers workpiece 4, so that the first machine vision inspection agencies 5 and the second machine vision inspection agencies 6 are to workpiece 4
Carry out dimensional measurement.
The rotating mechanism 3 is used for wheel measuring lid 1 under the control of industrial personal computer, to make setting in 1 inside of measurement lid
The second machine vision inspection agencies 6 on wall can rotate a circle around workpiece 4, and then can carry out to whole sides of workpiece 4
Measurement, obtains multiple size indexs of workpiece 4.
In the present embodiment, the job order of the present apparatus are as follows: when workpiece 4 moves to the first machine vision inspection agencies 5
When underface, industrial personal computer can control the work of telescoping mechanism 2 first, make telescoping mechanism 2 that measurement lid 1 be driven to cover workpiece 4, then exist
The first machine vision inspection agencies 5 and the work of the second machine vision inspection agencies 6 are controlled, realize the measurement of 4 top surface size of workpiece
Make rotating mechanism that measurement lid 1 be driven to rotate a circle, i.e., finally in control rotating mechanism work with the measurement of a lateral dimension
So that the second machine vision inspection agencies 6 is rotated a circle around workpiece 4, realizes the full-scale measurement of workpiece 4.
In the present embodiment, the first machine vision inspection agencies 5 and the second machine vision inspection agencies 6 are to utilize machine
Vision system measures, and is a kind of prior art, specific principle are as follows: replaces human eye using machine to make various measurements and sentence
It is disconnected, the image of object to be measured is acquired by image capture device, and the image of acquisition is passed to processor, carry out the spy of image
Sign extracts identification, such as height, width and length, and then obtains the size of object.
In the present embodiment, it should be pointed out that industrial personal computer refers to the first machine vision inspection agencies of background process 5 and
The image of two machine vision inspection agencies 6 acquisition and the host computer of control device all parts work, utilize existing industry
Computer may be implemented completely.
By above-mentioned design, it can be realized by the first machine vision inspection agencies 5 and the second machine vision inspection agencies 6
The dimensional measurement of workpiece 4, and under the cooperation of rotating mechanism 3, it realizes the full-scale measurement of workpiece 4, is not only greatly reduced
Measurement error improves measurement accuracy, also improves measurement efficiency.
Embodiment two
As shown in Fig. 1~7, the present embodiment is the specific of the product detection device based on machine vision described in embodiment one
Embodiment:
Product detection device based on machine vision provided by the present embodiment, including measurement lid 1, telescoping mechanism 2, rotation
Mechanism 3 and industrial personal computer, wherein the cross section of the measurement lid 1 is the U-shaped structure that Open Side Down.
The opening of the measurement lid 1 is arranged downwards, and is equipped in the measurement lid 1 for detecting 4 top surface ruler of workpiece
The first very little machine vision inspection agencies 5 and the second machine vision inspection agencies 6 for detecting 4 lateral dimension of workpiece.
First machine vision inspection agencies 5 are located at the inner top surface center of the measurement lid 1, second machine vision
Testing agency 6 is located on the inner sidewall of the measurement lid 1.
When the workpiece 4 is located at the underface of first machine vision inspection agencies 5, described in the industrial personal computer control
Telescoping mechanism 2 works, and the measurement lid 1 is driven to cover the workpiece 4, then controls the first machine vision inspection agencies 5 and the
The operation of two machine vision inspection agencies 6, and control the rotating mechanism 3 simultaneously and rotate a circle lid 1 is measured, it completes to the work
The size detection of part 4.
The industrial personal computer communicates to connect the telescoping mechanism 2, the rotating mechanism 3, first machine vision inspection respectively
Survey mechanism 5 and second machine vision inspection agencies 6.
In the present embodiment, the measurement lid 1, the telescoping mechanism 2, the rotating mechanism 3, first machine vision
Testing agency 5, the structure of second machine vision inspection agencies 6 and the industrial personal computer and the technical effect and reality that are reached
It is identical to apply example one, does not add to repeat in this.
Optimization, further include the conveyer belt 7 for transporting the workpiece 4, wherein the conveyer belt 7 is driven by motor 8
It is dynamic.
Discrete on the conveyer belt 7 to be placed with multiple workpiece 4, the distance between adjacent two workpiece 4 is greater than the measurement
The Opening length of lid 1, and the measurement lid 1 is located at the top of the conveyer belt 7.
The industrial personal computer communicates to connect the controlled end of the motor 8.
As shown in Figure 1, the top of conveyer belt 7 is arranged in measurement lid 1, that is, the translocation of conveyer belt 7 is utilized, by workpiece 4
It is delivered to the underface of the first machine vision inspection agencies 5 in measurement lid 1, constantly to realize with the conveying of conveyer belt 7
The pipelining that workpiece 4 measures.
In the present embodiment, the discrete setting of multiple workpiece 4, wherein the distance between adjacent two workpiece 4 can also be equal.
In the present embodiment, the reason of the distance between adjacent two workpiece 4 is greater than the length that measurement lid 1 is open is set are as follows:
Workpiece 4 below is covered for measurement lid 1 and reserves enough distances, prevents from covering measurement because of the distance between two workpiece 4 deficiency
1 can not cover workpiece 4.
Optimization, further include the testing agency for detecting 4 position of workpiece, wherein the testing agency include away from
From sensor 9, the range sensor 9 communicates to connect the industrial personal computer.
The inner top surface of the measurement lid 1 is equipped with the range sensor 9, wherein the first Machine Vision Detection machine
Structure 5 and the range sensor 9 are set gradually along 4 direction of transfer of workpiece, and 9 transmitting terminal of the range sensor is set straight down
It sets.
When the industrial personal computer detects range sensor 9 and the vertical range on 7 surface of conveyer belt changes, institute
It states industrial personal computer and stops the rotation of the motor 8, and control the telescoping mechanism 2 simultaneously and work.
As shown in Figure 1, setting testing agency is the Optimized Measures of above scheme, in order to reach the first machine in workpiece 4
When the underface of vision-based detection mechanism 5, conveyer belt 7 can be made to stop operating, and timely make to measure the decline of lid 1, cover workpiece
4, while two machine vision inspection agencies also being enable to work.
In the present embodiment, using range sensor 9 detect workpiece 4 whether reach First look testing agency 5 just under
Side, specific principle are as follows:
Range sensor 9 measures this light pulse from object is emitted to anti-by object by emitting special short optical pulse
It is emitted back towards the time come, the distance between object is calculated by time of measuring interval.
When workpiece 4 does not reach the underface of the first machine vision inspection agencies 5, the light pulse of the sending of range sensor 9
To 7 surface of conveyer belt, the distance measured is constant.And when workpiece 4 moves to the lower section of range sensor 9, then can
The light pulse for stopping it to issue, makes the distance measured change (more shorter than to the distance on 7 surface of conveyer belt), so,
At this moment industrial personal computer can judge that workpiece 4 has been introduced into measurement lid 1 according to the variation of distance.Simultaneously as the first machine regards
Feel that testing agency 5 and range sensor 9 set gradually along direction of transfer, so when workpiece 4 reaches the lower section of range sensor 9
When, necessarily reach the lower section of the first machine vision inspection agencies 5.
It, can be by range sensor in order to guarantee the accuracy of the first machine vision inspection agencies 5 acquisition 4 top image of workpiece
9 and first the distance between machine vision inspection agencies 5 quantitative setting make workpiece 4 when range sensor 9 detects workpiece 4
Positioned at the underface of the first machine vision inspection agencies 5.
When range sensor 9 detects workpiece 4, industrial personal computer can then control motor 8 and stop working, and stop transmission belt 7
Transmission, and then workpiece 4 is made to be parked in the underfaces of the first machine vision inspection agencies 5, at this point, industrial personal computer is in control telescoping mechanism
2 work drive measurement lid 1 to decline, cover workpiece 4, and control the first machine vision inspection agencies 5 and the detection of the second machine simultaneously
Mechanism 6 works, and acquires the figure of the top surface of workpiece 4 and the image of some side, finally works, drives in control rotating mechanism 3
It measures lid 1 to rotate one week, completes the Image Acquisition to the whole sides of workpiece 4, and then industrial personal computer carries out ruler according to incoming image
The full-scale measurement of workpiece 4 is realized in very little measurement.
In the present embodiment, in order to will do it rotation after covering workpiece 4 in view of measurement lid 1, the meeting between conveyer belt 7
Friction is led to the problem of, can make to measure lid 1 at a certain distance from 7 surface of conveyer belt (such as 3cm), stop telescoping mechanism 2
Work, detection measurement the distance between lid 1 and 7 surface of conveyer belt can also be used range sensor to measure, and principle is in aforementioned inspection
It surveys in mechanism and had explained in detail, then this does not add to repeat.
Optimization, further include workpiece ejecting mechanism, when the industrial personal computer detects the off-dimension of the workpiece 4,
The workpiece 4 is released the conveyer belt 7 by the industrial personal computer control workpiece ejecting mechanism.
Optimization, the workpiece ejecting mechanism includes electric telescopic rod 10, mounting plate 11 and push head 12, wherein described
The push head 12 is fixed on the telescopic end of electric telescopic rod 10, the electric telescopic rod 10 is fixed on the mounting plate 11
On, and telescopic direction is vertical with the direction of transfer of the conveyer belt 7.
The mounting plate 11 is vertically arranged, and the face view inner wall of the measurement lid 1 is slidably connected at by sliding equipment
On upper or backsight face inner wall.
When the industrial personal computer detects the off-dimension of the workpiece 4, the telescoping mechanism 2 is lifted the measurement lid
1, make the mounting plate 11 under the effect of gravity, the measurement lid 1, while the industrial personal computer control are skidded off by the sliding equipment
It makes the electric telescopic rod 10 to extend, the workpiece 4 is released into the conveyer belt 7.
The industrial personal computer communicates to connect the controlled end of the electric telescopic rod 10.
As shown in Fig. 2, Fig. 3 and Fig. 6, the description of specific structure is carried out to the workpiece ejecting mechanism below:
The industrial personal computer image incoming according to the first machine vision inspection agencies 5 and the second Machine Vision Detection testing agency 6,
The measurement of 4 size of workpiece is carried out, size does not meet standard if judging, i.e., controllable workpiece ejecting mechanism work, will be underproof
Workpiece 4 releases conveyer belt 7.
When industrial personal computer detects 4 off-dimension of workpiece, then it can control telescoping mechanism and be lifted lid 1 is measured, and due to
Mounting plate 11 is slidably connected on measurement lid 1 by sliding equipment, so, when measurement lid 1 lifts, mounting plate 11 can be in gravity
Under the action of, it is skidded off by sliding equipment, at this point, industrial personal computer can then control the elongation of electric telescopic rod 10, drives push 12 court of head
Workpiece 4 moves, and contact workpiece 4, is pushed out the surface of conveyer belt 7, realizes the rejecting of unqualified workpiece 4.
In this embodiment, the standard size data of workpiece 4 are stored in industrial personal computer, to measure two Machine Vision Detections
The incoming image of mechanism, after obtaining dimension data, compares with standard size data, realizes the rejecting of unqualified workpiece 4.
In the present embodiment, push head 12 uses arcuate structure.
Optimization, the sliding equipment includes mutually matched sliding rail 13 and sliding slot 14.
Be respectively equipped with the sliding rail 13 on the two sidewalls of the mounting plate 11, on the face view inner wall of the measurement lid 1 or
Backsight face inner wall is equipped with the sliding slot 14, and the mounting plate 11 is sliding by the mutual cooperation of the sliding rail 13 and the sliding slot 14
It is dynamic to be connected on the measurement lid 1.
Optimization, the sliding rail 13 is equipped with the first limited block 15, and the bottom end of the sliding slot 14 is equipped with and first limit
The second limited block 16 that position block 15 matches.
When the mounting plate 11 slides into the bottom end of the sliding slot 14, the first limited block 15 on the sliding rail 13 is overlapped on
On the second limited block 16 in corresponding side chute 14, the mounting plate 11 is limited.
As shown in Figure 4, Figure 5 and Figure 6, the description of specific structure is carried out to the sliding equipment below:
It is respectively equipped with sliding rail 13 on the two sidewalls of the mounting plate 11, and measures to offer on lid 1 and be matched with sliding rail 13
Sliding slot 14 mounting plate 11 and the measurement lid 1 can be made to form sliding that is, as shown in fig. 6, sliding rail 13 is sliding into sliding slot 14
Connection.
Meanwhile for measurement lid 1 when lifting, mounting plate 11 skids off sliding slot 14, so being provided on sliding rail 13 in order to prevent
First limited block 15 is provided with the second limited block 16 in the bottom end of sliding slot 4, when mounting plate 11 slides into 14 bottom end of sliding slot, first
Limited block 15 will be overlapped on the second limited block 16 in corresponding side chute 14, and then realize the limit of mounting plate 11.
Optimization, first machine vision inspection agencies 5 include the first industrial camera 501 and commercial measurement with first
LED flat plate light source 502, second machine vision inspection agencies 6 include the second industrial camera 601 and commercial measurement with second
LED flat plate light source 602.
First industrial camera 501 and 502 horizontal Tile of the first LED flat plate light source are arranged in the measurement lid 1
Inner top surface center, second industrial camera 601 and the second LED flat plate light source 602 are oppositely arranged on measurement lid 1 respectively
Two inner sidewalls on.
Key components of the industrial camera as NI Vision Builder for Automated Inspection, as the image capture device of article to be detected, it
With high picture steadiness, high-transmission ability and high anti-jamming capacity.Commercial measurement simultaneously uses LED flat plate light source as machine
The lighting system of vision system, it directly affects the quality and application effect of input data, industrial camera can be cooperated to work, reached
To optimal Image Acquisition effect.
In the present embodiment, the first industrial camera 501 and the ipsilateral setting of the first LED flat plate light source 502 belong to light source irradiation
Front illumination in method, this mode are easily installed.
And the second industrial camera 601 and the second LED flat plate light source 502 are oppositely arranged, and belong to the back in light source illuminating method
To illumination, this mounting means can obtain the image of high contrast, and then industrial personal computer is enable more accurately to analyze.
It in the present embodiment, can also be respectively to the first industrial camera 501 and the in order to improve the precision of Image Acquisition
Two industrial cameras 601 are equipped with commercial measurement telecentric lens, further to provide Image Acquisition quality.
Optimization, the telescoping mechanism 2 includes electric drive hydraulic thruster, wherein the telescopic end of the electric drive hydraulic thruster is solid
Surely the top surface of the measurement lid 1 is connected.
Optimization, the rotating mechanism 3 is arranged between the electric drive hydraulic thruster and the measurement lid 1, the rotation
Mechanism 3 includes stepper motor 301, shaft 302 and fixed plate 303, and the telescopic end of the electric drive hydraulic thruster is fixedly connected with institute
State the end face center of fixed plate 303.
The fixed plate 303 is equipped with the stepper motor 301, and the output shaft of the stepper motor 301 passes through shaft coupling
The one end for the shaft 302 that is sequentially connected, the other end of the shaft 302 are fixedly connected in the top surface of the measurement lid 1.
By above-mentioned design, using electric telescopic rod and stepper motor 301 can be realized measurement lid 1 up and down with
And rotation.
In this example, the rotation angle of measurement lid 1 can be accurately controlled using stepper motor 301, stepper motor of illustrating
301 90 degree of rotations every time.
The specific description course of work of the invention below:
Step 1: whether the detection of range sensor 9 changes at a distance from 7 surface of conveyer belt；If so, showing workpiece
4 reach the underface of the first Machine Vision Detection machine work, and industrial personal computer stops the rotation of motor 8, and control the elongation of telescoping mechanism 2,
Measurement lid 1 is put down, covers workpiece 4, otherwise, telescoping mechanism 2 does not work.
Step 2: controller controls the first machine vision inspection agencies 5 and the work of the second machine vision inspection agencies 6, adopt
Collect the image of 4 top surface of workpiece and the image of some side, and the image of acquisition is passed to industrial personal computer in real time.
Step 3: industrial personal computer control rotating mechanism 3 works, measurement lid 1 is driven to rotate a circle, during rotation, the second machine
Device vision-based detection mechanism 6 works, the image of 4 side of continuous collecting workpiece, and by acquired image real-time Transmission to work
Control machine.
Step 4: industrial personal computer goes out the size of workpiece 4 according to incoming image measurement, and be stored in local Workpiece standard
Size compares, and judges whether workpiece 4 is qualified；If qualified, control telescoping mechanism 2 works, and lifts measurement lid 1, and make motor 8
Work, conveyer belt 7 operate, and workpiece 4 are sent out measurement lid 1, and next workpiece 4 is sent into；Otherwise, industrial personal computer can also control flexible
Mechanism 2 works, and lifts measurement lid 1, and controls the elongation of electric telescopic rod 10 simultaneously, and underproof workpiece is released conveyer belt 7, is pushed away
After out, electric telescopic rod 10 restores to the original state, and industrial personal computer controls motor 8 and operates, and makes conveyer belt 7 that next workpiece 4 is sent to the
The underface of one machine vision inspection agencies 5.
The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all to fall into the claims in the present invention confining spectrum
Technical solution, be within the scope of the present invention.
Claims (10)
1. a kind of product detection device based on machine vision, it is characterised in that: including measurement lid (1), telescoping mechanism (2), rotation
Rotation mechanism (3) and industrial personal computer, wherein the cross section of the measurement lid (1) is the U-shaped structure that Open Side Down；
It is equipped in the measurement lid (1) for detecting the first machine vision inspection agencies (5) of workpiece (4) top surface size and being used for
Detect second machine vision inspection agencies (6) of workpiece (4) lateral dimension；
First machine vision inspection agencies (5) are located at the inner top surface center of the measurement lid (1), second machine vision
Testing agency (6) is located on the inner sidewall of the measurement lid (1)；
When the workpiece (4) are located at the underface of first machine vision inspection agencies (5), described in the industrial personal computer control
Telescoping mechanism (2) work drives the measurement lid (1) to cover the workpiece (4), then controls the first machine vision inspection agencies
(5) it is run with the second machine vision inspection agencies (6), and controlling the rotating mechanism (3) simultaneously will measurement lid (1) rotation one
Complete the size detection to the workpiece (4) in week；
The industrial personal computer communicates to connect the telescoping mechanism (2), the rotating mechanism (3), first machine vision inspection respectively
Survey mechanism (5) and second machine vision inspection agencies (6).
2. a kind of product detection device based on machine vision according to claim 1, it is characterised in that: further include being used for
Transport the conveyer belt (7) of the workpiece (4), wherein the conveyer belt (7) is driven by motor (8)；
Discrete on the conveyer belt (7) to be placed with multiple workpiece (4), the distance between adjacent two workpiece (4) is greater than the survey
The Opening length of amount lid (1), and the measurement lid (1) is located at the top of the conveyer belt (7)；
The industrial personal computer communicates to connect the controlled end of the motor (8).
3. a kind of product detection device based on machine vision according to claim 2, it is characterised in that: further include being used for
Detect the testing agency of the workpiece (4) position, wherein the testing agency includes range sensor (9), the Distance-sensing
Device (9) communicates to connect the industrial personal computer；
The inner top surface of the measurement lid (1) is equipped with the range sensor (9), wherein the first Machine Vision Detection machine
Structure (5) and the range sensor (9) are set gradually along workpiece (4) direction of transfer, and the range sensor (9) transmitting terminal is perpendicular
It is straight down-set；
When the industrial personal computer detects range sensor (9) and the vertical range on the conveyer belt (7) surface changes, institute
It states industrial personal computer and stops the rotation of the motor (8), and control the telescoping mechanism (2) work simultaneously.
4. a kind of product detection device based on machine vision according to claim 2, it is characterised in that: further include workpiece
Ejecting mechanism, when the industrial personal computer detects the off-dimension of the workpiece (4), the industrial personal computer controls workpiece kickoff mechanism
The workpiece (4) are released the conveyer belt (7) by structure.
5. a kind of product detection device based on machine vision according to claim 4, it is characterised in that: the workpiece is released
Mechanism includes electric telescopic rod (10), mounting plate (11) and push head (12), wherein the telescopic end of the electric telescopic rod (10)
On be fixed with the push head (12), the electric telescopic rod (10) is fixed on the mounting plate (11), and telescopic direction with
The direction of transfer of the conveyer belt (7) is vertical,
The mounting plate (11) is vertically arranged, and the face view inner wall of the measurement lid (1) is slidably connected at by sliding equipment
On upper or backsight face inner wall；
When the industrial personal computer detects the off-dimension of the workpiece (4), the telescoping mechanism (2) is lifted the measurement lid
(1), make the mounting plate (11) under the effect of gravity, the measurement lid (1), while the work are skidded off by the sliding equipment
Control machine controls electric telescopic rod (10) elongation, and the workpiece (4) are released the conveyer belt (7)；
The industrial personal computer communicates to connect the controlled end of the electric telescopic rod (10).
6. a kind of product detection device based on machine vision according to claim 5, it is characterised in that: the skate machine
Structure includes mutually matched sliding rail (13) and sliding slot (14)；
It is respectively equipped with the sliding rail (13) on the two sidewalls of the mounting plate (11), on the face view inner wall of the measurement lid (1)
Or backsight face inner wall is equipped with the sliding slot (14), the mounting plate (11) passes through the sliding rail (13) and the sliding slot (14)
Mutual cooperation is slidably connected on the measurement lid (1).
7. a kind of product detection device based on machine vision according to claim 6, it is characterised in that: the sliding rail
(13) the first limited block (15) are equipped with, the bottom end of the sliding slot (14) is equipped with the matched with first limited block (15)
Two limited blocks (16)；
When the mounting plate (11) slides into the bottom end of the sliding slot (14), the first limited block (15) on the sliding rail (13) is taken
It connects on the second limited block (16) in corresponding side chute (14), the mounting plate (11) is limited.
8. a kind of product detection device based on machine vision according to claim 1, it is characterised in that: first machine
Device vision-based detection mechanism (5) includes the first industrial camera (501) and the first LED flat plate light source (502) of commercial measurement, and described the
Two machine vision inspection agencies (6) include the second industrial camera (601) and the second LED flat plate light source (602) of commercial measurement；
First industrial camera (501) and the first LED flat plate light source (502) horizontal Tile setting are covered in the measurement
(1) inner top surface center, second industrial camera (601) and the second LED flat plate light source (602) are oppositely arranged on respectively
On two inner sidewalls of measurement lid (1).
9. a kind of product detection device based on machine vision according to claim 1, it is characterised in that: the telescopic machine
Structure (2) includes electric drive hydraulic thruster, wherein the telescopic end of the electric drive hydraulic thruster is fixedly connected with the top of the measurement lid (1)
Face.
10. a kind of product detection device based on machine vision according to claim 9, it is characterised in that: the rotation
Between the electric drive hydraulic thruster and measurement lid (1), the rotating mechanism (3) includes stepper motor for mechanism (3) setting
(301), shaft (302) and fixed plate (303), and the telescopic end of the electric drive hydraulic thruster is fixedly connected with the fixed plate
(303) end face center；
The fixed plate (303) is equipped with the stepper motor (301), and the output shaft of the stepper motor (301) passes through shaft coupling
One end of the device transmission connection shaft (302), the other end of the shaft (302) are fixedly connected with the top of the measurement lid (1)
Face center.
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| CN201910882447.9A CN110508503A (en) | 2019-09-18 | 2019-09-18 | A kind of product detection device based on machine vision |
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ID=68632709
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