CN101349550B - On-line rubber bolt appearance quality inspection machine - Google Patents
On-line rubber bolt appearance quality inspection machine Download PDFInfo
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- CN101349550B CN101349550B CN2008101204015A CN200810120401A CN101349550B CN 101349550 B CN101349550 B CN 101349550B CN 2008101204015 A CN2008101204015 A CN 2008101204015A CN 200810120401 A CN200810120401 A CN 200810120401A CN 101349550 B CN101349550 B CN 101349550B
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- guide rail
- rubber bolt
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Abstract
The invention discloses an on-line rubber plug outline quality inspection machine, which comprises a feeding device, a conveying device, an image collecting device, an image processing and result decision device, a product sorting device and a control unit, wherein two same parallel guide rails which are formed through assembling three bolts with different pitches in tight fit on a core shaft are used as the feeding device which can facilitate a rubber plug to automatically rotate while moving forwards, the rubber plug is detected whether reaches to the detecting position through an photoelectric switch, and an automatic time-delay control camera can shoot images in many times, thereby realizing the on-line automated acquisition outline image of 360 degrees cylindrical surface of the rubber plug, and strengthening the reliability of outline quality detection. The invention is also suitable for the outline quality detection of other cylindrical products, can accurately detect the outline quality of the rubber plug and automatically finish sorting storage through self-set process flow and the detection criterion. The invention has simple system structure, stable work and accurate sorting, and can increase the detection efficiency of cylindrical products such as rubber plugs.
Description
Technical field
The present invention relates to the product quality pick-up unit, especially relate to a kind of online rubber bolt appearance quality inspection machine.
Background technology
Rubber bolt is the product that is widely used at industrial circle, and the main application of rubber bolt is sealing, and the many electrical equipment on for example present automobile need carry out waterproof sealing with rubber bolt with wire terminal.The profile characteristics of rubber bolt product are generally to be the cylinder bodily form, because rubber bolt is widely used in the sealing occasion, the type quality of rubber bolt is had relatively high expectations, generally require the cylindricity height, appearance profile does not have defective, and the surface does not have burr etc., and the production of rubber bolt is mainly finished by the injection moulding extruding, cause quality problems such as rubber bolt appearance defective more, so the appearance quality inspection of rubber bolt is an important link after rubber bolt is produced.
Traditional rubber bolt appearance quality inspection is fully by manually finishing, but the volume of rubber bolt own is little, and just there is very big difficulty in hand inspection itself.Low, the poor accuracy of hand inspection mode efficient.On the one hand, the method for hand inspection needs a large amount of labours, and speed is slow, also is subjected to individual eyesight simultaneously, mood, and the influence of light etc. causes poor accuracy; Owing to need carry out quality check to the profile full detail of rubber bolt, positive and negative two contoured surface of hand inspection also are difficult to be checked through whole appearance information of rubber bolt, cause the appearance of omission situation on the other hand.So people expect a kind of artificial machine that the rubber bolt appearance quality is carried out self-verifying that replaces.
Adopt computer vision technique to replace manual method to come that rubber bolt is carried out quality testing and have self-evident convenience.The current type quality that utilizes machine vision to carry out industrial products detects and is rapidly developed.Present profile at industrial products detects the greatest problem that exists and is, because Machine Vision Detection is based on the detection of plane picture, cause common testing agency can't the appearance information on all directions of product be detected, do not photograph product back side information such as general detection and cause the situation of omission to take place.Once the someone proposed to rely on the multi-section video camera to come the appearance information on whole directions of product is checked, the major programme that is adopted is: settle the multi-section video camera, the certain angle in interval is put between the video camera, image to the multi-section shot by camera is synthetic, realize by this object appearance information is sampled comprehensively, the installation of a plurality of video cameras brings is not only the increase that the increase of cost also has the checkout equipment volume, also makes the connecting gear design be subjected to many restrictions and the structure more complicated even very difficult that becomes simultaneously.
Summary of the invention
At low, the poor accuracy of the manual checking efficiency of rubber bolt, general Machine Vision Detection difficulty puts in place, the cost height, baroque problem, the object of the present invention is to provide a kind of online rubber bolt appearance quality inspection machine of the type quality detection that is suitable for the cylindric product of rubber bolt class, by the design of guide rail and the setting of video camera photographic images quantity and shooting interval, realize collection, identification, and the qualified and substandard product after the identification is classified the complete outside drawing picture of rubber bolt.
The technical solution used in the present invention is:
Comprise feeding device, conveyer, image collecting device, Flame Image Process and decision maker as a result, product classification device and control module; It is characterized in that:
1) conveyer: comprise buncher, the screw rod by three sections different pitch of two same structures constitutes wringing fit and is assembled in the closed slide that forms on the mandrel, three synchronous pulleys and synchronous band, left and right sidesing supporting frame and driving lever; The screw rod of three sections different pitch forms the guide rail detection segment from left to right successively, guide rail is adjusted section and guide rail feeding section, two guide rail levels are installed on the left and right sidesing supporting frame, driving lever is equipped with on guide rail feeding section upper left side, the spacing of two guide rails is according to the rubber bolt body diameter design that is detected, an end that exposes two guide rails outside right bracing frame is equipped with first respectively, second synchronous pulley, buncher is installed on the right bracing frame, first of a synchronous band of the 3rd synchronous pulley warp on the motor shaft and an end of two guide rails, second synchronous pulley connects, and the velocity of rotation of two guide rails is regulated by the machine governor in the system control unit;
2) image collecting device: comprise the 3rd optoelectronic switch, hypervelocity video camera, annular light source; The 3rd optoelectronic switch is installed near directly over the guide rail detection segment charging aperture of left bracing frame, the hypervelocity video camera is installed in the 3rd optoelectronic switch upper left side, annular light source is enclosed within on the hypervelocity video camera, after the 3rd optoelectronic switch detects rubber bolt to be measured, control module control hypervelocity video camera automatic time delay is accurately repeatedly taken the rubber bolt image in the visual field, the online outside drawing picture that obtains rubber bolt cylinder 360 degree.
Screw flight direction on described two guide rails is identical, near the pitch of synchronous pulley one end guide rail feeding section more greatly, middle pitch minimum be that guide rail is adjusted section, be the guide rail detection segment in the middle of another section pitch occupy; Guide rail feeding section and guide rail detection segment below are connected to the recovery frame, and below, guide rail detection segment end is connected to the unacceptable product frame, and top, guide rail detection segment end is connected to the suction pipe of dress air valve, and the suction pipe below is connected to the certified products frame.
The beneficial effect that the present invention has is:
1. can obtain the profile view data on rubber bolt 360 degree, realize the online complete detection of the cylindric product design of rubber bolt class, effectively avoid the problem of omission.
2. by from treatment scheme and the detection criteria set, can be apace the type quality of rubber bolt be accurately detected and finishes automatically classification and storage.
3. system architecture is simple, working stability, and classification accurately can improve the cylindric production efficiency of products and the detection efficiency of rubber bolt class greatly.
Description of drawings
Fig. 1 is a general structure principle schematic of the present invention.
Fig. 2 is a guide rail front view of the present invention.
Fig. 3 is a guide rail vertical view of the present invention.
Among the figure: 1. certified products frame, 2. counter, 3. unacceptable product frame, 4. left bracing frame, 5. air valve, 6. suction pipe, 7. annular power supply, 8. hypervelocity video camera, 9. guide rail detection segment, 10. optoelectronic switch, 11. guide rails are adjusted section, 12. Flame Image Process and identifying unit as a result, 13. driving lever, 14. guide rail feeding sections, 15. optoelectronic switches, 16,17. mandrels, 18,19. guide rails, 20. Vib.s, 21. trench structure, 22. hoppers, 23. optoelectronic switches, 24,25,28. synchronous pulleys, 26. right bracing frame, 27. are with 29. bunchers synchronously, 30. the recovery frame, 31. system control units.
Embodiment
The invention will be further described below in conjunction with drawings and embodiments.
As Fig. 1, Fig. 2, shown in Figure 3, a kind of online rubber bolt appearance quality inspection machine comprises feeding device, conveyer, and image collecting device is handled and decision maker as a result product classification device and control module.Wherein:
1. feeding device: comprise hopper 22, trench structure 21, Vib. 20, the first optoelectronic switches 23 and second optoelectronic switch 15; First optoelectronic switch 23 is contained in hopper 22 feed openings, trench structure 21 1 ends connect with feed opening, and the other end is fixed on guide rail feeding section 14 tops, near guide rail, Vib. 20 is installed in trench structure 21 sides, and second optoelectronic switch 15 is installed in directly over the guide rail feeding section 14; First optoelectronic switch 23 has signal when there is rubber bolt hopper 22 the insides, when feeding section 14 has not detected rubber bolt when promptly second optoelectronic switch 15 does not have signal, system control unit (PLC) 31 can vibrate by control Vib. 20, Vib. 20 drives trench structure 21 vibrations, rubber bolt in the hopper 22 will enter trench structure 21 along the hopper mouth, slowly drop on the guide rail 18,19 of rotation along trench structure 21 then, enter guide rail feeding section 14.
2. conveyer: comprise buncher 29, synchronous pulley 24,25,28 is with 27 synchronously, guide rail 18,19, driving lever 13 and reclaim frame 30; The closed slide 18,19 that two identical and ends are equipped with synchronous pulley 24,25 respectively is contained on the left and right sidesing supporting frame 4,26, the distance of guide rail is set according to the diameter of rubber bolt, buncher 30 is contained on the right bracing frame 26, by being with 27 to be connected guide rail 18,19 and buncher 30 synchronously, can change the velocity of rotation of guide rail 18,19 by system control unit 31 control bunchers 29 with synchronous pulley 24,25,28; Guide rail 18, the 19th, the hollow screw wringing fit that is not waited by three sections pitch is assembled in mandrel 16, constitute on 17, surperficial minor increment between two mandrel screw rods is less than the cylinder diameter of rubber bolt, the surperficial minor increment of mandrel is greater than the cylinder diameter of rubber bolt, when falling into guide rail, rubber bolt can be parked on the screw surface between two guide rails, along with the rotation of guide rail moves forward on one side, under the effect of rubber bolt and guide rail surface friction force, rotate around self on one side simultaneously, can guarantee that video camera obtains the outside drawing picture on rubber bolt 360 degree, takes 2-3 by the shooting interval of setting during actual detected and opens whole profile image informations that image just can obtain rubber bolt; Guide rail 18, three sections screw rods that have pitch not wait on 19, near synchronous pulley 24,25 1 end pitch are guide rail feeding section 14 to the maximum, middle one section pitch minimum is that guide rail is adjusted section 11, in the middle of occuping, next one section pitch is guide rail detection segment 9, driving lever 13 is installed in guide rail and adjusts directly over the section 11, guide rail feeding section 14 is transported rubber bolt fast forward, when entering guide rail adjustment section 11 rubber bolt forward speed slow down, overlapping unnecessary rubber bolt is blocked to fall into by driving lever 13 and is reclaimed frame 30, from guide rail adjustment section 11 enter guide rail detection segment 9 rubber bolt forward speed accelerate, make the rubber bolt distance separately, successively stably by guide rail detection segment 9; During system works, the rubber bolt that feeding device is brought falls into guide rail feeding section 14 and moves forward fast, enter guide rail and adjust section 11 o'clock, speed slows down forward, driving lever can make rubber bolt separately enter guide rail successively and adjust section 11 simultaneously, passes through guide rail detection segment 9 with stable speed and certain intervals successively from the rubber bolt that guide rail adjustment section 11 is come out.
3. image collecting device: comprise the 3rd optoelectronic switch 10, hypervelocity video camera 8, annular light source 7; The 3rd optoelectronic switch 10 is installed in directly over the guide rail detection segment 9, hypervelocity video camera 8 is installed in the 3rd optoelectronic switch 10 upper left sides, annular light source 7 is enclosed within on the hypervelocity video camera 8, and annular light source 7 is made up of the LED lamp of a plurality of ring shooting, the illuminating effect in the time of can guaranteeing image taking; When the 3rd optoelectronic switch 10 has detected rubber bolt and has entered the detection position, hypervelocity video camera 8 automatic time delays, accurately take the rubber bolt image of setting quantity, the time of automatic time delay is adjusted according to rotating speed of motor and the proal speed of rubber bolt, can obtain delay time preferably by testing in advance; The repeatedly shooting of same rubber bolt image and the effect of rubber bolt self rotation can look like to absorb to the outside drawing of rubber bolt 360 degree, obtain whole appearance information of rubber bolt.
4. Flame Image Process and decision maker as a result: the Flame Image Process and the identifying unit 12 as a result that are a band display screen, be installed in hypervelocity video camera 8 the right, the user can set up the quantity and the mistiming of image capture on their own, the process of Flame Image Process, the different measuring window parameter of image, getting parms of template image, the matching degree standard that product is qualified.Before detecting, need to configure earlier the template image of this time detection, standard picture just, the process of Flame Image Process, the setting of measurement window, matching threshold, the quantity of an image capture and mistiming.During system works, when the 3rd optoelectronic switch 10 has detected rubber bolt and has passed through the detection position, hypervelocity video camera 8 carries out automatic time delay, take the image of setting quantity, handle according to the image processing process of setting then, contrast calculates matching degree with standard picture with the image after each measurement window processing, if all matching degrees are all more than or equal to setting matching threshold then judge that this rubber bolt is qualified, otherwise be defective, measurement result output on display screen, is exported the acceptance or rejection signal simultaneously to system control unit 31.
5. product classification unit: comprise air valve 5, suction pipe 6, certified products frame 1, unacceptable product frame 3 sum counters 2.5 mouthfuls of close guide rails above guide rail detection segment 9 of suction pipe, be positioned at hypervelocity video camera 8 left sides, air valve 5 is the inlet valves that can produce negative pressure, be installed on the suction pipe 6, suction pipe 6 other ends connect certified products frame 1, counter 2 is installed on the certified products frame 1, and unacceptable product frame 3 is installed in below the guide rail 18,19, the rectangle entrance of unacceptable product frame 3 be positioned at guide rail detection segment 9 back do not have screw-rod structure one section guide rail below; After detection finishes according to testing result, if certified products, opening air valve 5 makes certified products pass through conduit 6 suction certified products frames 1, simultaneously by 2 pairs of certified products number count of counter, directly arrive guide rail detection segment 9 back for unacceptable product, because the guide rail of back does not have screw-rod structure, the rubber bolt directly rectangle entrance by the unacceptable product frame falls into and does not conform to product frame 3.
6. system control unit 31 is coordinated the action of whole testing process.Comprise: Switching Power Supply, control buncher 29 detects 3 optoelectronic switch 10,15,23 signals, control Vib. 20, the triggering of air valve 5 and hypervelocity video camera 8, control counter 2 is accepted the testing result signal that Flame Image Process and identifying unit 12 are exported.
The testing process of total system is:
1. open system is selected the detection scheme set, and rubber bolt to be detected is put into hopper.
2. first optoelectronic switch has detected signal, and second optoelectronic switch does not have signal, Vibration on Start-up device vibration trench structure, and rubber bolt enters trench structure from the hopper mouth, moves to the guide rail direction along trench structure.
3. rubber bolt falls between the two guide rail screw surface, and along with the rotation of guide rail, rubber bolt moves forward, simultaneously around self rotating, during rubber bolt adjust section by guide rail, speed slows down and makes unnecessary rubber bolt fall into the recovery frame.When rubber bolt enters the guide rail detection segment, the 3rd optoelectronic switch detects signal during by the detection position, the hypervelocity video camera is taken the outside drawing picture of rubber bolt by automatic time delay, and setting by taking number of times and rubber bolt self revolving property obtain the rubber bolt appearance image on the different angles.
Flame Image Process and as a result identifying unit the image that obtains is handled according to the processing procedure of setting, and the standard form of contrast registration, calculate matching rate, if matching rate reaches the certified products standard of setting, judge that then this rubber bolt is qualified, otherwise defective, the result is presented on the display screen, and the acceptance or rejection signal is input to system control unit.
5. rubber bolt continues to move forward, and according to result of determination, if certified products, the system control unit automatic time delay starts air valve, makes certified products be drawn onto the certified products frame by suction pipe, and carries out the certified products counting by counter; For unacceptable product, when moving to the guide rail end when not having the screw-rod structure place, because surperficial minor increment is greater than the diameter of rubber bolt between screw rod, rubber bolt directly falls into the unacceptable product frame, realizes the classification of product.
Claims (2)
1. an online rubber bolt appearance quality inspection machine comprises feeding device, conveyer, image collecting device, Flame Image Process and decision maker as a result, product classification device and system control unit; It is characterized in that:
1) conveyer: comprise buncher (29), the screw rod of two groups of three sections different pitch wringing fit respectively is contained in two closed slides (18,19) that two parallel mandrels (16,17) are gone up formation, three synchronous pulleys (24,25,28) and a synchronous band (27), left and right bracing frame (4,26) and driving lever (13); The screw rod of three sections different pitch forms guide rail detection segment (9) from left to right successively, guide rail is adjusted section (11) and guide rail feeding section (14), described two closed slides (18,19) level is installed in a left side, right bracing frame (4,26) on, driving lever (13) is equipped with on guide rail feeding section (14) upper left side, described two closed slides (18,19) spacing is according to the rubber bolt body diameter design that is detected, described two closed slides (18,19) expose the outer end of right bracing frame (26) and be equipped with first respectively, second synchronous pulley (24,25), buncher (29) is installed in (26) on the right bracing frame, the 3rd synchronous pulley (28) on buncher (29) axle is with (27) and described two closed slides (18 through synchronously, 19) first of a end, second synchronous pulley (24,25) connect described two closed slides (18,19) velocity of rotation is regulated by the machine governor in the system control unit (31);
2) image collecting device: comprise an optoelectronic switch (10), hypervelocity video camera (8), annular light source (7); Described optoelectronic switch (10) is installed near directly over guide rail detection segment (9) charging aperture of left bracing frame (4), hypervelocity video camera (8) is installed in described optoelectronic switch (10) upper left side, annular light source (7) is enclosed within on the hypervelocity video camera (8), after described optoelectronic switch (10) detects rubber bolt to be measured, system control unit control hypervelocity video camera (8) automatic time delay is accurately repeatedly taken the rubber bolt image in the visual field, the online outside drawing picture that obtains rubber bolt cylinder 360 degree;
Flame Image Process and as a result identifying unit the image that obtains is handled according to the processing procedure of setting, and the standard form of contrast registration, calculate matching rate, if matching rate reaches the certified products standard of setting, judge that then this rubber bolt is qualified, otherwise defective, the result is presented on the display screen, and the acceptance or rejection signal is input to system control unit.
2. a kind of online rubber bolt appearance quality inspection machine according to claim 1, it is characterized in that: it is characterized in that: the screw flight direction on described two closed slides (18,19) is identical, the pitch of close three synchronous pulley one ends is guide rail feeding section (14) more greatly, middle pitch minimum be that guide rail is adjusted section (11), be guide rail detection segment (9) in the middle of another section pitch occupy; Guide rail feeding section (14) and guide rail detection segment (9) below are connected to reclaims frame (30), below, guide rail detection segment (9) end is connected to unacceptable product frame (30), top, guide rail detection segment (9) end is connected to the suction pipe (6) of dress air valve (5), and the suction pipe below is connected to certified products frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101204015A CN101349550B (en) | 2008-08-26 | 2008-08-26 | On-line rubber bolt appearance quality inspection machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101204015A CN101349550B (en) | 2008-08-26 | 2008-08-26 | On-line rubber bolt appearance quality inspection machine |
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| Publication Number | Publication Date |
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| CN101349550A CN101349550A (en) | 2009-01-21 |
| CN101349550B true CN101349550B (en) | 2010-06-09 |
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| CN2008101204015A Expired - Fee Related CN101349550B (en) | 2008-08-26 | 2008-08-26 | On-line rubber bolt appearance quality inspection machine |
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| CN101349550A (en) | 2009-01-21 |
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