A kind of plate defect detection device and its detection methodTechnical field
The present invention relates to timber to process detection device technical field, more particularly to a kind of plate defect detection device and its inspectionSurvey method.
Background technology
The defects of plate surface, relies primarily on artificial range estimation, reviewer under incandescent lamp with the method for range estimation to plate intoRow detection, most of visions and experience for relying on testing staff in detection process, according to the color of plate, texture, color and luster orNo to have the defects of crackle, small holes caused by worms, knot, corrosion to be evaluated, not only detection error is big but also holds for this artificial detection methodIt is vulnerable to the influence of individual factor, examination criteria is often inconsistent between each testing staff, testing result can be caused to vary with each individual,Cross inspection, detection leakage phenomenon is difficult to avoid that, so as to cause plate surface quality very different, the inefficiency of detection, labor intensity is big,And work for a long time under the strong light of incandescent lamp, the eyes for reviewer are a very big injuries, with science and technologyProgress and development, this artificial detection method can not meet the needs of wood-based panel industry metaplasia production, it is necessary to use for reference association area and changeUndergo technological transformation into experience and industrial upgrading, to improve the production of plate and detection efficiency.
The content of the invention
It is an object of the invention to provide a kind of plate defect detection device and its detection method, according to the present invention detectionDevice can make in real time, rapidly detect and handle defect present in plate, it is achieved thereby that at a high speed, the mesh of high quality of productionTimely detection plate surface the defects of, and error is small, and operation is easy, it is fairly simple, easy to operate, just in measurement processIt is prompt flexible.To achieve these goals, the present invention adopts the following technical scheme that：
According to an aspect of the invention, there is provided a kind of plate defect detection device, the defect detecting device includeRack, is equipped with the first transport mechanism of plate, the second transport mechanism and laterally overstating in the upper surface level of rack and is connected on theThe first support beam above one transport mechanism overstates the second support beam being connected on above the second transport mechanism with horizontal, describedOriented first transport mechanism surface is set to extend the width of measuring device of installation vertically in first support beam, in the first conveyerTwo middle side parts of structure are provided with thickness detection apparatus, set oriented second transport mechanism surface to erect in second support beamFirst slot measurement device of straight extension installation, is reserved between first transport mechanism and the butt end of the second transport mechanismThere is scanning gap, be provided with the second slot measurement device below scanning gap, the machine in the second transport mechanism lower endControl cabinet, the width of measuring device, thickness detection apparatus, the first slot measurement device and the second seam are further fixed on frame sideGap measuring device is electrically connected with the control cabinet respectively.
Such scheme is it is further preferred that the first slot measurement device is swept including line slideway, linear bearing, laserRetouch instrument, driving cylinder, the first fixed seat, the second fixed seat, the first travel switch and the second travel switch, the linear axis bearing sleeveIt is connected on line slideway, the laser scanner is fixed in the linear bearing lower wall by connecting rod suspension, described straightThe lower section that the both ends of line guide rail are fastened on second support beam with the first fixed seat and the second fixed seat respectively is consolidated,The driving cylinder is fixed in second support beam of the line slideway side, the output shaft of the driving cylinder is with being socketed inThe linear bearing of the line slideway is sequentially connected, and fixes described first respectively in first fixed seat and the second fixed seatTravel switch and the second travel switch so that linear bearing can be touched in the round-trip sliding process of the line slideway it is describedFirst travel switch and the second travel switch, to control the sliding stroke of linear bearing, the driving cylinder, laser scanner,First travel switch and the second travel switch are electrically connected with the control cabinet respectively.
Such scheme is it is further preferred that above first transport mechanism and be located at the thickness detection apparatus and instituteState the first compression roller for being provided between the first support beam and being relatively rotated with first transport mechanism；In the described second transmissionIt is provided with above mechanism and close to the scanning gap side the second compression roller relatively rotated with second transport mechanism.
Such scheme is it is further preferred that two middle side parts in the first transport mechanism are provided with for adjusting Thickness sensitivity dressThe distance adjusting mechanism of the distance between first transport mechanism is put, the distance adjusting mechanism includes horizontal slide rail, levelSupporting rod and vertically set vertical chute, the lower surface of one end of the horizontal slide rail and the rack be slidably connected andIt is in same plane to mutual horizontal vertical, under the other end of the horizontal slide rail and vertically set vertical chuteEnd horizontally rotates connection, and the upright slide block being mutually matched, the upper end of the upright slide block and institute are provided with the vertical chuteThe one end for stating horizontal support bar is vertically fixedly connected, and the other end of the horizontal support bar fixes the Thickness sensitivity dressPut.
Such scheme it is further preferred that be additionally provided with horizontal slide opening in the horizontal slide rail, in the vertical chute andThe vertical slide opening that size is identical and corresponds is respectively arranged with upright slide block.
Such scheme in the scanning gap both sides it is further preferred that be respectively arranged with sliding support and width milling sideKnife, company is slided in the lower surface between first transport mechanism and the butt end of the second transport mechanism to the sliding support respectivelyConnect, the width milling side knife is fixed on the edge of the scanning gap both sides by sliding support.
Such scheme is it is further preferred that the defect detecting device further includes variable frequency drive motors, the frequency conversion driveMotor is connected with the first compression roller transmission, and first compression roller passes through chain or belt transmission with second compression rollerConnection.
Such scheme it is further preferred that the width of measuring device is width measurement sensor, survey by second gapAmount device is scanned the gap of plate using laser scanner.
According to another aspect of the present invention, there is provided a kind of plate defect detection method, comprises the following steps：
Step 1：Load adjustment：The first compression roller and the second compression roller and the first transport mechanism, the second transmission are adjusted respectivelyGap between mechanism, plate to be detected is entirely positioned in the first transport mechanism and adjusts the height of thickness detection apparatusDegree is in same level with plate；
Step 2：Width and Thickness sensitivity：Plate, which is transferred into below width of measuring device, to be started to detect length, is transmittedThickness sensitivity is carried out in front of to thickness detection apparatus and under the extruding of the first compression roller, and the data transfer of detection is extremely controlledCase is analyzed and display processing, then judges width data value, if width differential exceeds default width range value, startsWidth milling processing when knife carries out milling；
Step 3：Plate gap detection：Start the first slot measurement device and the second slot measurement device in milling crack approachGap Scanning Detction is carried out to the upper and lower surface of plate respectively, and the data transfer of gap Scanning Detction to control cabinet is dividedAnalysis and display processing；Then detected gap data value and length data value are judged at the same time, if gap data value and length numberExceed default value range according to value, be then determined as that length is unqualified；And unqualified alarm is sent, then the plate of detection is carried outClassifying screen selects on-gauge plate material；
Step 4：Detect data value processing：If the data value that step 2 and step 3 are detected without departing from default value range,Then the data value detected is analyzed and processed.
Such scheme is it is further preferred that analyzing and processing is carried out to the data value detected to be included respectively to width dataValue, gap data value and length data value carry out feature extraction and defect classification, so as to reject underproof plate detection data.
Such scheme is it is further preferred that the detected data value carries out the fineness of defect analysis identifying processing up to notMore than 0.5mm, institute's defect analysis identifying processing is not limited to hole, scratch, indenture, folding line, crackle, small holes caused by worms, knot, burn into dirtPoint, color, texture, color and luster, the defects of be detected and evaluate.
The above-mentioned technical proposal that the present invention uses, the present invention have following remarkable result：
Detection device according to the present invention can in real time, rapidly detect and handle defect present in plate, so that realHigh speed, the purpose of high quality of production are showed；Detection speed is faster, and sensitivity is higher, and defects detection can be carried out to plate with commentingEstimate, structure of the invention is simple, measurement is convenient, has good market prospects.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of plate defect detection device of the present invention；
Fig. 2 is a kind of schematic elevation view of plate defect detection device of the present invention；
Fig. 3 is the structure diagram of the first slot measurement device of the present invention
Fig. 4 is the structure diagram of the distance adjusting mechanism of the present invention；
In attached drawing, 1- racks, the first transport mechanisms of 2-, the second transport mechanisms of 3-, the first support beams of 4-, 5- second supportsCrossbeam, 6- thickness detection apparatus, 7- sliding supports, 8- millings side knife, the first compression rollers of 9-, the second compression rollers of 10-, 11- control cabinets,50- the first slot measurement devices, 51- the second slot measurement devices, 60- distance adjusting mechanisms, 100- plates, 501- straight lines are ledRail, 502- linear bearings, 503- laser scanners, 504- driving cylinders, the first fixed seats of 505-, the first travel switches of 506-,The second travel switches of 507-, the second fixed seats of 508-, 601- horizontal slide rails, 602- horizontal support bars, 603- vertical chutes, 604-Upright slide block, the horizontal slide openings of 601a-, the vertical slide openings of 604a-.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, referring to the drawings and preferred reality is enumeratedExample is applied, the present invention is described in more detail.However, it is necessary to illustrate, many details listed in specification are only to beReader is set to have a thorough explanation to the one or more aspects of the present invention, even without these specific details can alsoRealize the aspects of the invention.
As depicted in figs. 1 and 2, a kind of plate defect detection device, the defect detecting device include according to the present inventionRack 1, the first transport mechanism 2, the second transport mechanism 3 and horizontal overstate that plate is equipped with the upper surface level of rack 1 connectThe first support beam 4 above the first transport mechanism 2 overstates the second support beam being connected on above the second transport mechanism 3 with horizontal5, set oriented first transport mechanism, 2 surface to extend the width of measuring device 40 of installation vertically in first support beam 4,Thickness detection apparatus 6 is installed in two middle side parts of the first transport mechanism 2, oriented is set in second support beam 5Two transport mechanisms, 3 surface extends the first slot measurement device 50 of installation vertically, is transmitted in first transport mechanism 2 and secondScanning gap 70 is reserved between the butt end of mechanism 3, the lower section in scanning gap 70 is provided with the second slot measurement device 51,Control cabinet 11, the width of measuring device 40, thickness inspection are further fixed on the rack side of 3 lower end of the second transport mechanismDevice 6, the first slot measurement device 50 and the second slot measurement device 51 is surveyed to be electrically connected with the control cabinet 11 respectively.InstituteState scanning 70 both sides of gap and be respectively arranged with sliding support 7 and width milling side knife 8, which passes with described first respectively1 lower surface between the butt end of 2 and second transport mechanism 3 of mechanism is sent to be slidably connected, the width milling side knife 8 passes through slipStent 7 is fixed on the edge of scanning 70 both sides of gap, so that the plate more to wider plate or burrs on edges carries outMilling side is handled, by pushing and pulling distance of the sliding support 7 referring now to transport mechanism so as to adjusting the size degree of plate milling.
In the present invention, with reference to shown in Fig. 1, Fig. 2 and Fig. 3, the first slot measurement device 50 includes line slideway501st, linear bearing 502, laser scanner 503, driving cylinder 504, the first fixed seat 505, the second fixed seat 508, the first row506 and second travel switches 507 of Cheng Kaiguan, the linear bearing 502 are socketed on line slideway 501, the laser scanner503 are fixed in 502 lower wall of linear bearing by connecting rod suspension, and the both ends of the line slideway 501 are respectively with theThe lower section that one fixed seat 505 and the second fixed seat 508 are fastened on second support beam 5 is consolidated, in the line slidewayThe driving cylinder 504 is fixed in second support beam 5 of 501 sides, the output shaft of the driving cylinder 504 is with being socketed in instituteThe linear bearing 502 for stating line slideway 501 is sequentially connected, solid respectively in 505 and second fixed seat 508 of the first fixed seatFixed first travel switch, 506 and second travel switch 507, so that linear bearing 502 is round-trip in the line slideway 501506 and second travel switch 507 of the first travel switch can be touched in sliding process, to control the cunning of linear bearing 502Dynamic stroke, when the distance that stroke linear bearing 502 slides is long, will touch travel switch so as to control driving cylinder 504The operating state of output shaft, damages linear bearing 502, the driving cylinder 504, laser are swept to prevent output shaft action excessiveRetouch instrument 503, the first travel switch 506 and the second travel switch 507 to be electrically connected with the control cabinet 11 respectively, the control cabinet 11Respectively to driving cylinder 504, laser scanner 503, the first travel switch 506 and the second travel switch 507 "on" position intoRow control.
In the present invention, with reference to shown in Fig. 1 and Fig. 2, above first transport mechanism 2 and it is located at the Thickness sensitivityThe first compression roller 9 relatively rotated with first transport mechanism 2 is provided between device 6 and first support beam 4；Turn opposite with second transport mechanism 3 is provided with above second transport mechanism 3 and close to scanning 70 side of gapThe second dynamic compression roller 10, the defect detecting device further include variable frequency drive motors and with first transport mechanism 2 andThe driving motor (not shown) that second transport mechanism 3 is sequentially connected, the variable frequency drive motors are transmitted with first compression roller 9Connection, first compression roller 9 are connected with second compression roller 10 by chain or belt transmission.The width of measuring device40 be width measurement sensor, and the second slot measurement device 5 is scanned the gap of plate, plate using laser scannerLength detection is carried out after being admitted to from the first transport mechanism 2, under the extruding and guiding of the first compression roller 9, makes plate moreMeasured in the state of smooth, improve the accuracy of measurement.
In the present invention, with reference to shown in Fig. 1, Fig. 2 and Fig. 4, it is provided with two middle side parts of the first transport mechanism 2 for adjustingSave the distance adjusting mechanism 60 of distance between thickness detection apparatus 6 and first transport mechanism 2, the distance adjusting mechanism 60Including horizontal slide rail 601, horizontal support bar 602 and vertically set vertical chute 603, the one of the horizontal slide rail 601End and the lower surface of the rack 1 are slidably connected and are mutually in same plane to horizontal vertical, the horizontal slide rail 601The other end horizontally rotates with the lower end of vertically set vertical chute 603 to be connected, and is provided with the vertical chute 603The upright slide block 604 being mutually matched, the upper end of the upright slide block 604 are vertical with one end progress of the horizontal support bar 602 solidFixed connection, the other end of the horizontal support bar 602 fix the thickness detection apparatus 6.Also set up in the horizontal slide rail 601Have horizontal slide opening 601a, the vertical chute 603 with that size is respectively arranged with upright slide block 604 is identical and correspondVertical slide opening 604a, using screw rod through vertical slide opening 604a by vertical chute 603 and upright slide block 604 be fixed so as toTo carry out height adjusting, between the lower surface by adjusting the horizontal slide opening 601a and the rack 1 on the horizontal slide rail 601Carry out inside and outside vertical sliding motion or level to horizontally slip, be then fixed on using screw rod through horizontal slide opening 601a on stent, so thatRelative to distance between the first transport mechanism 2 or between the first transport mechanism 2, shape is at a certain angle for adjusting, so as to reach tuneSave the distance between thickness detection apparatus 6 (thickness transducer) and described first transport mechanism 2.
According to another aspect of the present invention, with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 3, the present invention also provides a kind of inspection of plate defectSurvey method, comprises the following steps：
Step 1：Load adjustment：The first compression roller 9 and the second compression roller 10 and the first transport mechanism 2, second are adjusted respectivelyGap between transport mechanism 3, makes the size in gap suitable with the thickness of plate, and plate to be detected is entirely positioned overIn one transport mechanism 2 and adjust the height of thickness detection apparatus 6 and plate is in same level；
Step 2：Width and Thickness sensitivity：Plate 100 is transferred into the lower section of width of measuring device 40 and starts to detect length, quiltIt is sent to the front of thickness detection apparatus 6 and Thickness sensitivity is carried out under the extruding of the first compression roller 9, and by the data transfer of detectionAnalyzed to control cabinet 11 and display processing, width data value is then judged, if width differential exceeds default width rangeValue, then start width milling when knife 8 carries out milling；
Step 3：Plate gap detection：Start the first slot measurement device 50 at the same time in milling crack approach and the second gap is surveyedMeasure device 51 and gap Scanning Detction, the first slot measurement device 50 and the second gap are carried out to the upper and lower surface of plate respectivelyMeasuring device 51 moves back and forth carry out real time scan in the horizontal direction of plate upper and lower surface along transmission direction, and scanning accuracy is everySecond is no less than 256 collection points, and the direction of transfer of plate is spatially mutually perpendicular to the measuring device in scanning processInto line scans, speed when its lateral shuttle movement is into line scans is more than more than twice of plate transmission speed, and will seam on groundThe data transfer of gap Scanning Detction is analyzed to control cabinet 11 and display processing；Then judge detected gap data value andLength data value, if gap data value and length data value exceed default value range, is determined as that length is unqualified, and sendUnqualified alarm, on-gauge plate material is selected to the plate progress classifying screen of detection；
Step 4：Detect data value processing：If the data value that step 2 and step 3 are detected without departing from default value range,Then the data value detected is analyzed and processed, can be facilitated according to the data of analyzing and processing and sifting sort is carried out to plateProcessing；Analyzing and processing is carried out to the data value detected to be included respectively to width data value, gap data value and length data valueFeature extraction and defect classification are carried out, so as to reject underproof plate detection data, passes through setting in control cabinet 11 respectivelyController is stored and is uploaded to, and host computer realizes feature extraction, defect is classified and data-printing, and two in the present invention swashThe gap of photoscanner collection plate is from the initial end scanning operation of plate to end, and the pixel collected is carried out featureIdentifying processing is normalized in extraction and least square method, and the pixel of identifying processing and default standard pixel are fittedContrast, so as to export whether actual measurement pixel with default standard pixel keeps highly consistent, then progressively to the actual measurement pixel of outputDefect rank is classified, and the fineness of board surface defect discriminance analysis is identified up to 0.5mm, the board surface defect is no more thanBe not limited to hole, scratch, indenture, folding line, crackle, small holes caused by worms, knot, burn into stain, color, texture, color and luster, the defects of carry outDetection and evaluation.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the artFor member, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and modifications also shouldIt is considered as protection scope of the present invention.