CN103801518B - A kind of detection system for bearing roller - Google Patents
A kind of detection system for bearing roller Download PDFInfo
- Publication number
- CN103801518B CN103801518B CN201410042685.6A CN201410042685A CN103801518B CN 103801518 B CN103801518 B CN 103801518B CN 201410042685 A CN201410042685 A CN 201410042685A CN 103801518 B CN103801518 B CN 103801518B
- Authority
- CN
- China
- Prior art keywords
- rotating disk
- rolling element
- connects material
- swivel plate
- sucker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
A kind of detection system for bearing roller, on workbench, be provided with automatic flushing device, workpiece sequencing device and for delivery of the driving-belt of rolling element, also be provided with the rotating disk that connects material, upper surface at the described rotating disk that connects material is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms a station on the rotating disk that connects material, the actuating unit control station of the each rotation of rotating disk that connects material, along being provided with successively feed mechanism in the rotating disk edge that connects material in the direction of rotation of the rotating disk that connects material, rotation feeding and lower end image detection mechanism, upper end image detection mechanism and rotation feeding and cylindrical image detection mechanism, this device effectively cooperatively interacts the connect material rotating disk and rotation material fetching mechanism and image acquisition units of an annular, the realization rotating disk feeding in turning course that connects material, the automation mechanized operation of detection and blowing, and the workpiece assigned address in the rotating disk that connects material accurately after guarantee blowing, in ensureing accuracy of detection, improve detection efficiency.
Description
Technical field
The present invention relates to bearing roller detection field, specifically a kind of detection system for bearing roller.
Background technology
Bearing roller is the vitals of bearing, and the quality of rolling element quality has directly affected reliability and the life-span of bearing. Bearing roller mainly adopts following several detection method at present: artificial visually examine's method, electromagnetic eddy detection method, ultrasonic detection method, magnetic detection method.
Artificial visually examine's method is that the surface to rolling element and end face carry out visualize by human eye, can observe rolling element whether have flaw by means of magnifying glass.
Electromagnetic eddy detection method is that the electric current passing through is under certain condition constant by passing into alternating current to a coil. If near tested rolling element, rolling element surface can induce eddy current, is subject to vortes interference coil, coil current can change. Because whether the size of eddy current has defect and difference with rolling element surface, so the size that coil current changes can reflect that there is zero defect on rolling element surface.
Ultrasonic detection method is to utilize ultrasonic energy to penetrate the depths of metal material, and while entering another cross section by a cross section, the feature that occurs to reflect in interface edge checks a kind of method of rolling element defect, when ultrasonic beam passes to metal inside from rolling element surface by probe, while running into defect and rolling element bottom surface, just there is respectively back wave, on fluorescent screen, form impulse waveform, judge defective locations and size according to these impulse waveforms.
Magnetic detection method is a kind of detection method for detecting ferrimagnet surface and near surface flaw. In the time that rolling element magnetizes, if rolling element surface defectiveness exists, because increasing, the magnetic resistance of fault location produces leakage field, formation local magnetic field, just magnetic shape and the position of display defect herein, thus judge the existence of defect.
All there is certain defect in the use of above-mentioned various detection methods, artificial visually examine's method needs a large amount of testing staff, and people's the long-time observation of eyes easily produces tired, has influence on quality and the efficiency of detection; Electromagnetic eddy detection method can be carried out high speed detection, easily is automated, but is not suitable for complex-shaped part, and can only detect surface and the near surface flaw of conductive material, and testing result is also easy to be subject to the interference of material itself and other factors; Ultrasonic detection method requires smoothly, requires exper ienced reviewer just can distinguish defect kind, defect is not had to intuitive workpiece working surface; Magnetic detection method can not be found rolling element surface pores, folder quarrel and be hidden in the defect of weld seam depths.
Along with scientific and technological progress, some enterprises develop the checkout equipment of automation gradually, this equipment generally includes cleaning device, collator and conveying device and image detection device, although this device tentatively can be realized unmanned automation mechanized operation, but in use, user finds to have following drawback: one, between conveyer and image detection device, generally to be connected a feed mechanism for workpiece transfer, the way of enterprise's routine is to adopt a cylinder to drive a scraping wings to complete this operating process, but this structure practicality is poor, and in pusher process, easily change the position of rolling element, bring difficulty to follow-up image detection, two, the detection efficiency in order to improve, must improve the speed of conveying, but coordinate because image detecting element and conveying device exist the problem disconnecting, and cause occurring the situation of undetected, false retrieval in a large number, make the non-constant of existing roller checkout equipment result of use.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of detection system for bearing roller, the present invention is by effectively cooperatively interacting the connect material rotating disk and rotation material fetching mechanism and image acquisition units of an annular, realize in the automation mechanized operation of feeding, detection and blowing in rotating disk turning course that connects material, and the workpiece assigned address in the rotating disk that connects material accurately after guarantee blowing, can not have influence on next step detection, positioning performance is better, in ensureing accuracy of detection, improves detection efficiency.
The technical solution adopted in the present invention is: a kind of detection system for bearing roller, comprise workbench, on workbench, be provided with automatic flushing device, workpiece sequencing device and for delivery of the driving-belt of rolling element, rolling element after processing cleans through automatic flushing device, after oven dry, enter workpiece sequencing device, by workpiece sequencing device, rolling element be arranged in to certain rule and deliver on conveyer belt, on conveyer belt, be provided with magnetic-adsorption mechanism, make on driving-belt, to there is the equal absorption position in multiple intervals by magnetive attraction, ensure neat being erected on conveyer belt and carrying of rolling element, the end that is positioned at conveyer belt is also provided with a connect material rotating disk and control the actuating unit of the turntable rotation that connects material on workbench, upper surface at the described rotating disk that connects material is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms on the rotating disk that connects material one for placing the station of rolling element, the actuating unit control station of the each rotation of rotating disk that connects material, along being provided with successively feed mechanism in the rotating disk edge that connects material in the direction of rotation of the rotating disk that connects material, rotation feeding and lower end image detection mechanism, upper end image detection mechanism and rotation feeding and cylindrical image detection mechanism, feed mechanism is at the end of conveyer belt and connect material between rotating disk, described feed mechanism comprises the displacement controlling organization moving back and forth for the rolling element on driving-belt being delivered to the manipulator that connects material on rotating disk and driving device hand,
Described rotation feeding and lower end image detection mechanism, comprise the bracing frame being fixedly installed on workbench, be arranged on the swivel plate I on bracing frame and the servomotor for driving swivel plate I to rotate, the lower surface of described swivel plate I is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and on the rotating disk that connects material, quantity and the spacing of the quantity of every group of sucker and spacing and every group of sucker of swivel plate I are all identical, the rotating disk that connects material is identical with swivel plate I rotation direction, station of the every rotation of swivel plate I, all make swivel plate I wherein the sucker of two groups lay respectively at two groups of adjacent suckers on the rotating disk that connects material directly over, the sucker that swivel plate I is other one group is positioned at the top at image acquisition units visual angle, lower end, lower end image acquisition units is delivered to rolling element in the sucker group connecting material on rotating disk by the sucker group in swivel plate I after having gathered image information, to should sucker group, its both sides are respectively equipped with defective work collecting box I and the ejecting mechanism I for defective work is rejected,
Described upper end image detection mechanism, comprise the bracing frame being arranged on workbench and be arranged on the upper end image acquisition units on bracing frame, the collection visual angle of upper end image acquisition units is the sucker group to this place on the rotating disk that connects material just, to should sucker group, its both sides be respectively equipped with defective work collecting box II and the ejecting mechanism II for defective work is rejected;
Described rotation feeding and cylindrical image detection mechanism comprise the bracing frame being fixedly installed on workbench, be arranged on the swivel plate II on bracing frame, for driving the servomotor of swivel plate II rotation and being arranged on the rotating disk edge that connects material from turntable and being positioned at the cylindrical image acquisition units from turntable one side, the lower surface of described swivel plate II is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and on the rotating disk that connects material, quantity and the spacing of the quantity of every group of sucker and spacing and every group of sucker of swivel plate II are all identical, the rotating disk that connects material is identical with swivel plate II rotation direction, station of the every rotation of swivel plate II, all make swivel plate II wherein the sucker of two groups lay respectively at two groups of adjacent suckers on the rotating disk that connects material directly over, the sucker that swivel plate II is other one group is positioned at directly over turntable, by swivel plate II, rolling element is delivered on turntable, drive the rolling element rotation on it from turntable, cylindrical image acquisition units collects after the whole cylindrical image information of rolling element, swivel plate II is sent to the rolling element on autobiography platform in the sucker group connecting material on rotating disk, to should sucker group, its both sides are respectively equipped with blow tank and for rolling element being advanced to the ejecting mechanism III of blow tank.
Described comprises a pedestal and is arranged on the rotation platform on pedestal from turntable, and the quantity of the rotation platform on pedestal equates with the quantity of every group of sucker in swivel plate II.
Described displacement controlling organization is by transverse shifting assembly, vertically moving assembly forms with vertical moving assembly, manipulator is arranged on vertical moving assembly by connector, and move back and forth up and down by vertical mobile Component driver manipulator, described vertical moving assembly is arranged on by slide block on the guide rail that vertically moves assembly, the motor vertically moving on assembly drives vertical moving assembly to move back and forth along its guide rail direction by slide block, the described assembly that vertically moves is arranged on by slide block on the guide rail of transverse shifting assembly, motor on transverse shifting assembly is driven and is vertically moved assembly and move back and forth along its guide rail direction by slide block, described manipulator is tabular component, on the lower surface of tabular component, be provided with the sucker that holds rolling element end face by magnetic force.
Described transverse shifting assembly, vertically move assembly and vertical moving assembly, by servomotor, leading screw be arranged on the slide block composition on leading screw by nut.
Described swivel plate I and swivel plate II are same structure, its shape is trident plate, on trident plate, each fork plate is equipped with one group of sucker in the side of workbench, corresponding each swivel plate, on it, point-blank, and the angle of the line of the line of the center of every group of sucker and the axis of rotation of swivel plate and other group center of sucker and the axis of rotation of swivel plate is 120 ° for the center of every group of sucker and the axis of rotation of swivel plate.
Described rotation feeding and lower end image detection mechanism and rotation feeding and cylindrical image detection mechanism, be equipped with the governor motion for adjusting its swivel plate height on its bracing frame.
Described lower end image acquisition units is arranged on the below of workbench by height regulating mechanism, be positioned in the view directions of lower end image acquisition units, on the plate face of workbench, is provided with through hole.
Described cylindrical image acquisition units is arranged on support by angle-adjusting mechanism, and support one end is fixedly installed on workbench end face.
In described blow tank, be provided with demarcation strip, below blow tank, be provided with defective work collecting box and certified products collecting box, the end of blow tank is connected with respectively the slideway that leads to defective work collecting box and certified products collecting box, realizes the trend of conversion rolling element by adjusting the turned position of demarcation strip.
For a detection method for the detection system of bearing roller, comprise the following steps: the step that the rolling element after processing is cleaned, dried, rolling element is arranged in to certain rule and delivers to the step on conveyer belt, make to have the equal absorption position in multiple intervals on driving-belt by magnetive attraction, what guarantee rolling element was neat is erected on conveyer belt and the step of carrying, rolling element is detected to the step of appearance images by image acquisition units: in the step detecting in rolling element outward appearance, by the rotating disk that connects material is set at conveyer belt end, realize material loading simultaneously by the rotation of the rotating disk that connects material, select, discharging and detection lower surface, upper surface, the process of arc surface, upper surface at the rotating disk that connects material is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms on the rotating disk that connects material one for placing the station of rolling element, the actuating unit control station of the each rotation of rotating disk that connects material, by one reciprocally mobile workpiece grabbing mechanism the rolling element on conveyer belt is delivered on certain station of the rotating disk that connects material, the quantity that guarantee workpiece grabbing mechanism captures rolling element is at every turn identical with the sucker quantity of a station on the rotating disk that connects material, taking this station as initiating terminal, when the turntable rotation that connects material arrives next station, by a swivel plate with three groups of suckers, the rolling element of this station on this rotating disk that connects material is held and turns to lower end image capture position, gather and continued to turn to the next station of rotating disk rolling element being released in the sucker group of this station of connecting material after the image of lower surface, defective work is rejected simultaneously, the rotating disk that connects material is rotated further to next station, while arriving this station, gather upper end image information simultaneously, after Information Monitoring, defective work is rejected, then the dial rotation that connects material is to next station, by a swivel plate with three groups of suckers, the rolling element of this station on this rotating disk that connects material is held and turns to the top from turntable, rolling element is released on turntable and is rotated, cylindrical image acquisition units collects complete cylindrical image information simultaneously, rear swivel plate adsorbs the rolling element that has gathered image deliver to the next station of the rotating disk that connects material, on this station, by pusher, rolling element is all advanced to blow tank, by changing the position of demarcation strip in blow tank, rolling element is fallen in correct collecting box, detection completes.
The invention has the beneficial effects as follows:
One, the present invention are by effectively cooperatively interacting the connect material rotating disk and rotation material fetching mechanism and image acquisition units of an annular, realize in the automation mechanized operation of feeding, detection and blowing in rotating disk turning course that connects material, and the workpiece assigned address in the rotating disk that connects material accurately after guarantee blowing, can not have influence on next step detection, positioning performance is better, in ensureing accuracy of detection, improves detection efficiency.
Two, this feed mechanism comprises a manipulator can space moving, this manipulator is tabular component, on the lower surface of tabular component, be provided with the sucker that holds rolling element end face by magnetic force, pass through said structure, make this mechanism operation stable, automatically control performance is better, and can control accurately rolling element and move to assigned address, improves efficiency and precision that follow-up outward appearance detects.
They are three years old, in rotation feeding and lower end image detection mechanism and rotation feeding and cylindrical image detection mechanism, by connect material rotating disk and a swivel plate with three groups of suckers are cooperatively interacted, realize in the feeding in turntable rotation process that connects material, the automation mechanized operation of detection and blowing, and adopt following structure: the lower surface of swivel plate is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and on the rotating disk that connects material on the quantity of every group of sucker and spacing and swivel plate the quantity of every group of sucker and spacing all identical, the effectively workpiece assigned address in the rotating disk that connects material accurately after guarantee blowing, positioning performance is better, improve detection efficiency and accuracy of detection.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention saves automatic flushing device and workpiece sequencing device.
Fig. 2 is the structural representation of feed mechanism.
Fig. 3 is the structural representation of vertical moving assembly in feed mechanism.
Fig. 4 is the structural representation of rotation feeding and lower end image detection mechanism.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the structural representation of rotation feeding and cylindrical image detection mechanism.
Fig. 7 is the structural representation from turntable.
Fig. 8 is the structural representation of automatic flushing device and workpiece sequencing device in the present invention.
Mark in figure: 1, workbench, 2, conveyer belt, 3, the rotating disk that connects material, 4, feed mechanism, 401, manipulator, 402, transverse shifting assembly, 403, vertically move assembly, 404, vertical moving assembly, 5, rotation feeding and lower end image detection mechanism, 501, bracing frame, 502, swivel plate I, 503, servomotor, 504, lower end image acquisition units, 505, through hole, 506, defective work collecting box I, 507, ejecting mechanism I, 6, upper end image detection mechanism, 601, bracing frame, 602, upper end image acquisition units, 603, defective work collecting box II, 604, ejecting mechanism II, 7, rotation feeding and cylindrical image detection mechanism, 701, bracing frame, 702, swivel plate II, 703, servomotor, 704, from turntable, 7041, pedestal, 7042, rotation platform, 705, cylindrical image acquisition units, 706, blow tank, 707, ejecting mechanism III, 8, automatic flushing device, 801, hopper, 802, conveyer belt, 803, service sink, 804, water pump, 805, high-pressure nozzle, 806, blower fan, 9, workpiece sequencing device, 901, catch tray, 902, setting wheel.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, the present embodiment, taking the technical program as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in the figure, a kind of detection system for bearing roller, comprise workbench 1, on workbench 1, be provided with automatic flushing device 8, workpiece sequencing device 9 and for delivery of the driving-belt 2 of rolling element, rolling element after processing cleans through automatic flushing device 8, after oven dry, enter workpiece sequencing device 9, by workpiece sequencing device 9, rolling element be arranged in to certain rule and deliver on conveyer belt 2, on conveyer belt 2, be provided with magnetic-adsorption mechanism, make on driving-belt, to there is the equal absorption position in multiple intervals by magnetive attraction, ensure neat being erected on conveyer belt and carrying of rolling element, the end that is positioned at conveyer belt 2 is also provided with a connect material rotating disk 3 and control the actuating unit of the turntable rotation that connects material on workbench 1, upper surface at the described rotating disk 3 that connects material is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms on the rotating disk that connects material one for placing the station of rolling element, the actuating unit control station of the each rotation of rotating disk that connects material, along being provided with successively feed mechanism 4 in the rotating disk edge that connects material in the direction of rotation of the rotating disk 3 that connects material, rotation feeding and lower end image detection mechanism 5, upper end image detection mechanism 6 and rotation feeding and cylindrical image detection mechanism 7, feed mechanism 4 is at the end of conveyer belt 2 and connect material between rotating disk 3, described feed mechanism 4 comprises the displacement controlling organization moving back and forth for the rolling element on driving-belt being delivered to the manipulator 401 that connects material on rotating disk and driving device hand,
Described rotation feeding and lower end image detection mechanism 5, comprise the bracing frame 501 being fixedly installed on workbench, be arranged on the swivel plate I 502 on bracing frame and the servomotor 503 for driving swivel plate I to rotate, the lower surface of described swivel plate I 502 is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and on the rotating disk 3 that connects material, quantity and the spacing of the quantity of every group of sucker and spacing and 502 every groups of suckers of swivel plate I are all identical, the rotating disk that connects material is identical with swivel plate I rotation direction, a station of swivel plate I 502 each rotations, be swivel plate I turns to adjacent that group sucker position from the position of one group of sucker wherein, all make swivel plate I 502 wherein the sucker of two groups lay respectively at two groups of adjacent suckers on the rotating disk 3 that connects material directly over, the sucker that swivel plate I 502 is other one group is positioned at the top at lower end image acquisition units 504 visual angles, lower end image acquisition units 504 is delivered to rolling element in the sucker group connecting material on rotating disk by the sucker group in swivel plate I after having gathered image information, to should sucker group, its both sides are respectively equipped with defective work collecting box I 506 and the ejecting mechanism I 507 for defective work is rejected, so, just realize three groups of suckers feeding simultaneously in swivel plate I, the operation of detection and blowing, in order to ensure that both better coordinate, adjustment time that time of a station of dial rotation and swivel plate I rotate two stations that connects material equates,
Described upper end image detection mechanism 6, comprise the bracing frame 601 being arranged on workbench and be arranged on the upper end image acquisition units 602 on bracing frame, the collection visual angle of upper end image acquisition units 602 is the sucker group to this place on the rotating disk 3 that connects material just, to should sucker group, its both sides are respectively equipped with defective work collecting box II 603 and the ejecting mechanism II 604 for defective work is rejected, further optimize, upper end image acquisition units 602 is arranged on bracing frame 601 by height regulating mechanism, facilitates the detection of Multiple Type rolling element.
Described rotation feeding and cylindrical image detection mechanism 7 comprise the bracing frame 701 being fixedly installed on workbench, be arranged on the swivel plate II 702 on bracing frame, for driving the servomotor 703 of swivel plate II rotation and being arranged on rotating disk 3 edges that connect material from turntable 704 and being positioned at the cylindrical image acquisition units 705 from turntable one side, the lower surface of described swivel plate II 702 is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and on the rotating disk 3 that connects material, quantity and the spacing of the quantity of every group of sucker and spacing and 702 every groups of suckers of swivel plate II are all identical, the rotating disk 3 that connects material is identical with swivel plate II 702 rotation directions, station of the every rotation of swivel plate II 702, be swivel plate II turns to adjacent that group sucker position from the position of one group of sucker wherein, all make swivel plate II 702 wherein the sucker of two groups lay respectively at two groups of adjacent suckers on the rotating disk 3 that connects material directly over, the sucker that swivel plate II 702 is other one group is positioned at directly over turntable 704, so, just realize three groups of suckers feeding simultaneously in swivel plate II, the operation of detection and blowing, in order to ensure that both better coordinate, adjustment time that time of a station of dial rotation and swivel plate II rotate two stations that connects material equates, by swivel plate II 702, rolling element is delivered on turntable 704, drive the rolling element rotation on it from turntable, cylindrical image acquisition units 705 collects after the whole cylindrical image information of rolling element, swivel plate II is sent to the rolling element on autobiography platform in the sucker group connecting material on rotating disk, to should sucker group, its both sides are respectively equipped with blow tank 706 and for rolling element being advanced to the ejecting mechanism III 707 of blow tank 706.
The present invention, in order better to make cylindrical image acquisition units collect complete image, described comprises a pedestal 7041 and is arranged on the rotation platform 7042 on pedestal from turntable 704, and the quantity of the rotation platform 7042 on pedestal 7041 equates with the quantity of every group of sucker in swivel plate II 702.
The present invention, further optimize this programme, described displacement controlling organization is by transverse shifting assembly 402, vertically moving assembly 403 forms with vertical moving assembly 404, manipulator 401 is arranged on vertical moving assembly 404 by connector, and move back and forth up and down by vertical moving assembly 404 driving device hands 401, described vertical moving assembly 404 is arranged on by slide block on the guide rail that vertically moves assembly 403, the motor vertically moving on assembly 403 drives vertical moving assembly 404 to move back and forth along its guide rail direction by slide block, the described assembly 403 that vertically moves is arranged on by slide block on the guide rail of transverse shifting assembly 402, motor on transverse shifting assembly 402 is driven and is vertically moved assembly 403 and move back and forth along its guide rail direction by slide block, described manipulator 401 is tabular component, on the lower surface of tabular component, be provided with the sucker that holds rolling element end face by magnetic force, above-mentioned transverse shifting assembly 402, vertically move assembly 403 and vertical moving assembly 404, by servomotor, leading screw and the slide block being arranged on leading screw by nut form.
The present invention, described swivel plate I 502 and swivel plate II 702 can adopt same structure, for example: its shape is trident plate, on trident plate, each fork plate is equipped with one group of sucker in the side of workbench, corresponding each swivel plate, on it, point-blank, and the angle of the line of the line of the center of every group of sucker and the axis of rotation of swivel plate and other group center of sucker and the axis of rotation of swivel plate is 120 ° for the center of every group of sucker and the axis of rotation of swivel plate.
The present invention, described rotation feeding and lower end image detection mechanism 5 and rotation feeding and cylindrical image detection mechanism 7, be equipped with the governor motion for adjusting its swivel plate height on its bracing frame, facilitate the rolling element of different model to detect.
The present invention, described lower end image acquisition units 504 is arranged on the below of workbench 1 by height regulating mechanism, be positioned in the view directions of lower end image acquisition units 504, on the plate face of workbench 1, is provided with through hole 505.
The present invention, described cylindrical image acquisition units 705 is arranged on support by angle-adjusting mechanism, and support one end is fixedly installed on workbench 1 end face.
The present invention, in described blow tank 706, be provided with demarcation strip, below blow tank, be provided with defective work collecting box and certified products collecting box, the end of blow tank is connected with respectively the slideway that leads to defective work collecting box and certified products collecting box, realizes the trend of conversion rolling element by adjusting the turned position of demarcation strip.
For a detection method for the detection system of bearing roller, comprise the following steps:
The step that rolling element after processing is cleaned, dried;
Rolling element is arranged in to certain rule and delivers to the step on conveyer belt;
Make to have the equal absorption position in multiple intervals on driving-belt by magnetive attraction, what guarantee rolling element was neat is erected on conveyer belt and the step of carrying;
Rolling element is detected to the step of appearance images by image acquisition units:
In the step detecting in rolling element outward appearance, by the rotating disk that connects material is set at conveyer belt end, realize material loading simultaneously by the rotation of the rotating disk that connects material, select, discharging and detection lower surface, upper surface, the process of arc surface, upper surface at the rotating disk that connects material is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms on the rotating disk that connects material one for placing the station of rolling element, the actuating unit control station of the each rotation of rotating disk that connects material, by one reciprocally mobile workpiece grabbing mechanism the rolling element on conveyer belt is delivered on certain station of the rotating disk that connects material, the quantity that guarantee workpiece grabbing mechanism captures rolling element is at every turn identical with the sucker quantity of a station on the rotating disk that connects material, taking this station as initiating terminal, when the turntable rotation that connects material arrives next station, by a swivel plate with three groups of suckers, the rolling element of this station on this rotating disk that connects material is held and turns to lower end image capture position, gather and continued to turn to the next station of rotating disk rolling element being released in the sucker group of this station of connecting material after the image of lower surface, defective work is rejected simultaneously, the rotating disk that connects material is rotated further to next station, while arriving this station, gather upper end image information simultaneously, after Information Monitoring, defective work is rejected, then the dial rotation that connects material is to next station, by a swivel plate with three groups of suckers, the rolling element of this station on this rotating disk that connects material is held and turns to the top from turntable, rolling element is released on turntable and is rotated, cylindrical image acquisition units collects complete cylindrical image information simultaneously, rear swivel plate adsorbs the rolling element that has gathered image deliver to the next station of the rotating disk that connects material, on this station, by pusher, rolling element is all advanced to blow tank, by changing the position of demarcation strip in blow tank, rolling element is fallen in correct collecting box, detection completes.
The present invention, described automatic flushing device 8 comprises the hopper 801 for storing rolling element to be cleaned, for transmitting conveyer belt 802 and the service sink 803 of rolling element, in service sink 803, be provided with the cleansing medium for cleaning rolling element, cleansing medium can adopt water or wet goods, the feed opening of described hopper 801 is arranged on the top of the feed end of conveyer belt 802, along being provided with successively high-pressure spraying flushing machine and blower fan 806 on the direction of transfer of conveyer belt 802, described high-pressure spraying flushing machine comprises water pump 804, high-pressure nozzle 805 and connecting line, the feed tube of water pump 804 is arranged in service sink 803, its discharging tube is connected with high-pressure nozzle 805 by connecting line, on the transmission plane of the corresponding conveyer belt 802 of mouth spray of high-pressure nozzle 805, on the transmission plane of the corresponding conveyer belt 802 of air outlet of described blower fan 806, the discharge end of conveyer belt 802 is connected with the import of workpiece sequencing device.
For realizing optimum efficiency, described blower fan 806 can arrange multiple, and the quantity of this blower fan is rationally determined according to actual conditions.
For the cleansing medium that makes service sink 803 can recycle, service sink 803 correspondences can be arranged on to the below of high-pressure nozzle, so can reclaim the cleaning fluid after flushing, so that again utilize.
In order to ensure follow-up accuracy of detection, clean cleaning operation environment is provided, further optimize this technical scheme, can also be at airtight housing of automatic flushing device outer setting, described conveyer belt, service sink, high-pressure spraying flushing machine and blower fan are arranged in housing, and the feed end of conveyer belt and discharge end are respectively through charging aperture and discharging opening corresponding on housing; Only need charging and discharging to complete at housing outward, other operate in housing and complete, so just ensure that whole cleaning carries out in airtight cavity, prevented that the floating chip in workshop is stained with the rolling element surface of cleaning again, greatly improved follow-up precision and efficiency of detecting.
This device, described workpiece sequencing device 9 is made up of catch tray 901 and setting wheel 902, and the feed opening place that setting wheel 902 is arranged on catch tray 901 is arranged in certain rule by setting wheel 902 by rolling element and is delivered on conveyer belt 2; Described workpiece sequencing device also can be for vibrating disk or the funneling dish that shakes, and adopts to be above-mentionedly equal to replacement and can to realize identical effect.
The present invention, a side of described conveyer belt 2 is also provided with reshaping device, ensures that by reshaping device rolling element proper alignment and interval on conveyer belt equate.
Ejecting mechanism I as herein described, ejecting mechanism II and ejecting mechanism III all have a telescopic control end, can adopt cylinder, hydraulic cylinder or electric pushrod etc. Lower end as herein described image acquisition units, upper end image acquisition units and cylindrical image acquisition units all can adopt commercially available CCD camera; Sucker as herein described can adopt commercially available magnechuck, is realized absorption or is discharged workpiece by power on/off.
Claims (10)
1. the detection system for bearing roller, comprise workbench (1), on workbench (1), be provided with automatic flushing device (8), workpiece sequencing device (9) and for delivery of the conveyer belt (2) of rolling element, rolling element after processing cleans through automatic flushing device (8), after oven dry, enter workpiece sequencing device (9), by workpiece sequencing device (9), rolling element be arranged in to certain rule and deliver on conveyer belt (2), on conveyer belt (2), be provided with magnetic-adsorption mechanism, make on conveyer belt, to there is the equal absorption position in multiple intervals by magnetive attraction, ensure neat being erected on conveyer belt and carrying of rolling element, it is characterized in that:
The end that is positioned at conveyer belt (2) is also provided with a connect material rotating disk (3) and control the actuating unit of the turntable rotation that connects material on workbench (1), upper surface at the described rotating disk that connects material (3) is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms on the rotating disk that connects material one for placing the station of rolling element, the actuating unit control station of the each rotation of rotating disk that connects material, along being provided with successively feed mechanism (4) in the rotating disk edge that connects material in the direction of rotation of rotating disk (3) that connect material, rotation feeding and lower end image detection mechanism (5), upper end image detection mechanism (6) and rotation feeding and cylindrical image detection mechanism (7), feed mechanism (4) is positioned between the end of conveyer belt (2) and the rotating disk that connects material (3), described feed mechanism (4) comprises the displacement controlling organization moving back and forth for the rolling element on conveyer belt being delivered to the manipulator (401) that connects material on rotating disk and driving device hand,
Described rotation feeding and lower end image detection mechanism (5), comprise the bracing frame being fixedly installed on workbench, be arranged on the swivel plate I (502) on bracing frame and the servomotor for driving swivel plate I to rotate, the lower surface of described swivel plate I (502) is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and the upper quantity of every group of sucker of the rotating disk that connects material (3) and quantity and the spacing of spacing and every group of sucker of swivel plate I (502) are all identical, the rotating disk that connects material is identical with swivel plate I rotation direction, station of the every rotation of swivel plate I (502), all make swivel plate I (502) wherein the sucker of two groups lay respectively at the upper two groups of adjacent suckers of the rotating disk that connects material (3) directly over, the sucker that swivel plate I (502) is other one group is positioned at the top at lower end image acquisition units (504) visual angle, lower end image acquisition units (504) is delivered to rolling element in the sucker group connecting material on rotating disk by the sucker group in swivel plate I after having gathered image information, to should sucker group, its both sides are respectively equipped with defective work collecting box I (506) and the ejecting mechanism I (507) for defective work is rejected,
Described upper end image detection mechanism (6), comprise the bracing frame being arranged on workbench and be arranged on the upper end image acquisition units (602) on bracing frame, the collection visual angle of upper end image acquisition units (602) is the sucker group to upper this place of the rotating disk that connects material (3) just, to should sucker group, its both sides be respectively equipped with defective work collecting box II (603) and the ejecting mechanism II (604) for defective work is rejected;
Described rotation feeding and cylindrical image detection mechanism (7) comprise the bracing frame being fixedly installed on workbench, be arranged on the swivel plate II (702) on bracing frame, for driving the servomotor of swivel plate II rotation and being arranged on the rotating disk that connects material (3) edge from turntable (704) and being positioned at the cylindrical image acquisition units (705) from turntable one side, the lower surface of described swivel plate II (702) is along the circumferential direction evenly equipped with three groups of suckers of living rolling element by magnetic-adsorption, and the upper quantity of every group of sucker of the rotating disk that connects material (3) and quantity and the spacing of spacing and every group of sucker of swivel plate II (702) are all identical, the rotating disk (3) that connects material is identical with swivel plate II (702) rotation direction, station of the every rotation of swivel plate II (702), all make swivel plate II (702) wherein the sucker of two groups lay respectively at the upper two groups of adjacent suckers of the rotating disk that connects material (3) directly over, the sucker that swivel plate II (702) is other one group is positioned at directly over turntable (704), by swivel plate II (702), rolling element is delivered on turntable (704), drive the rolling element rotation on it from turntable, cylindrical image acquisition units (705) collects after the whole cylindrical image information of rolling element, swivel plate II is sent to the rolling element on autobiography platform in the sucker group connecting material on rotating disk, to should sucker group, its both sides are respectively equipped with blow tank (706) and for rolling element being advanced to the ejecting mechanism III (707) of blow tank (706).
2. a kind of detection system for bearing roller according to claim 1, it is characterized in that: described comprises a pedestal (7041) and be arranged on the rotation platform (7042) on pedestal from turntable (704), the quantity of the rotation platform (7042) on pedestal (7041) equates with the quantity of the upper every group of sucker of swivel plate II (702).
3. a kind of detection system for bearing roller according to claim 1 and 2, it is characterized in that: described displacement controlling organization is by transverse shifting assembly (402), vertically moving assembly (403) forms with vertical moving assembly (404), manipulator (401) is arranged on vertical moving assembly (404) by connector, and move back and forth up and down by vertical moving assembly (404) driving device hand (401), described vertical moving assembly (404) is arranged on by slide block on the guide rail that vertically moves assembly (403), the motor vertically moving on assembly (403) drives vertical moving assembly (404) to move back and forth along its guide rail direction by slide block, the described assembly (403) that vertically moves is arranged on by slide block on the guide rail of transverse shifting assembly (402), motor on transverse shifting assembly (402) is driven and is vertically moved assembly (403) and move back and forth along its guide rail direction by slide block, described manipulator (401) is tabular component, on the lower surface of tabular component, be provided with the sucker that holds rolling element end face by magnetic force.
4. a kind of detection system for bearing roller according to claim 3, it is characterized in that: described transverse shifting assembly (402), vertically move assembly (403) and vertical moving assembly (404), by servomotor, leading screw be arranged on the slide block composition on leading screw by nut.
5. a kind of detection system for bearing roller according to claim 3, it is characterized in that: described swivel plate I (502) and swivel plate II (702) are same structure, its shape is trident plate, on trident plate, each fork plate is equipped with one group of sucker in the side of workbench, corresponding each swivel plate, on it, the center of every group of sucker and the axis of rotation of swivel plate are point-blank, and the angle of the line of the line of the center of every group of sucker and the axis of rotation of swivel plate and other group centers of sucker and the axis of rotation of swivel plate is 120 °.
6. a kind of detection system for bearing roller according to claim 5, it is characterized in that: described rotation feeding and lower end image detection mechanism (5) and rotation feeding and cylindrical image detection mechanism (7), be equipped with the governor motion for adjusting its swivel plate height on its bracing frame.
7. a kind of detection system for bearing roller according to claim 5, it is characterized in that: described lower end image acquisition units (504) is arranged on the below of workbench (1) by height regulating mechanism, be positioned in the view directions of lower end image acquisition units (504), on the plate face of workbench (1), be provided with through hole (505).
8. a kind of detection system for bearing roller according to claim 5, is characterized in that: described cylindrical image acquisition units (705) is arranged on support by angle-adjusting mechanism, and support one end is fixedly installed on workbench (1) end face.
9. a kind of detection system for bearing roller according to claim 5, it is characterized in that: in described blow tank (706), be provided with demarcation strip, below blow tank, be provided with defective work collecting box and certified products collecting box, the end of blow tank is connected with respectively the slideway that leads to defective work collecting box and certified products collecting box, realizes the trend of conversion rolling element by adjusting the turned position of demarcation strip.
10. the detection method of a kind of detection system for bearing roller according to claim 1, comprises the following steps:
The step that rolling element after processing is cleaned, dried;
Rolling element is arranged in to certain rule and delivers to the step on conveyer belt;
Make to have the equal absorption position in multiple intervals on conveyer belt by magnetive attraction, what guarantee rolling element was neat is erected on conveyer belt and the step of carrying;
Rolling element is detected to the step of appearance images by image acquisition units:
It is characterized in that: in the step detecting in rolling element outward appearance, by the rotating disk that connects material is set at conveyer belt end, realize material loading simultaneously by the rotation of the rotating disk that connects material, select, discharging and detection lower surface, upper surface, the process of arc surface, upper surface at the rotating disk that connects material is along the circumferential direction evenly provided with many groups of suckers of living rolling element by magnetic-adsorption, each group sucker all forms on the rotating disk that connects material one for placing the station of rolling element, the actuating unit control station of the each rotation of rotating disk that connects material, by one reciprocally mobile workpiece grabbing mechanism the rolling element on conveyer belt is delivered on certain station of the rotating disk that connects material, the quantity that guarantee workpiece grabbing mechanism captures rolling element is at every turn identical with the sucker quantity of a station on the rotating disk that connects material, taking this station as initiating terminal, when the turntable rotation that connects material arrives next station, by a swivel plate with three groups of suckers, the rolling element of this station on this rotating disk that connects material is held and turns to lower end image capture position, gather and continued to turn to the next station of rotating disk rolling element being released in the sucker group of this station of connecting material after the image of lower surface, defective work is rejected simultaneously, the rotating disk that connects material is rotated further to next station, while arriving this station, gather upper end image information simultaneously, after Information Monitoring, defective work is rejected, then the dial rotation that connects material is to next station, by a swivel plate with three groups of suckers, the rolling element of this station on this rotating disk that connects material is held and turns to the top from turntable, rolling element is released on turntable and is rotated, cylindrical image acquisition units collects complete cylindrical image information simultaneously, rear swivel plate adsorbs the rolling element that has gathered image deliver to the next station of the rotating disk that connects material, on this station, by pusher, rolling element is all advanced to blow tank, by changing the position of demarcation strip in blow tank, rolling element is fallen in correct collecting box, detection completes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410042685.6A CN103801518B (en) | 2014-01-29 | 2014-01-29 | A kind of detection system for bearing roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410042685.6A CN103801518B (en) | 2014-01-29 | 2014-01-29 | A kind of detection system for bearing roller |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103801518A CN103801518A (en) | 2014-05-21 |
CN103801518B true CN103801518B (en) | 2016-05-04 |
Family
ID=50699183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410042685.6A Expired - Fee Related CN103801518B (en) | 2014-01-29 | 2014-01-29 | A kind of detection system for bearing roller |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103801518B (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104142344A (en) * | 2014-07-21 | 2014-11-12 | 重庆颖泉标准件有限公司 | Machine vision detection system |
CN104236461A (en) * | 2014-09-26 | 2014-12-24 | 江阴市精成数控有限公司 | Multifunctional, quick and high-accuracy mechanical part detection system |
CN104236460A (en) * | 2014-09-26 | 2014-12-24 | 江阴市精成数控有限公司 | Multifunctional, quick and high-accuracy mechanical part detection method |
CN104444245B (en) * | 2014-10-30 | 2016-08-24 | 江苏力星通用钢球股份有限公司 | A kind of taper roller super grinding automatic transmission machine |
CN104624522B (en) * | 2015-02-04 | 2017-02-22 | 宁波百加百测控设备有限公司 | Bearing detecting and sorting device based on machine vision |
JP6529170B2 (en) * | 2015-08-26 | 2019-06-12 | 株式会社 東京ウエルズ | Work appearance inspection apparatus and work appearance inspection method |
CN105371900A (en) * | 2015-12-15 | 2016-03-02 | 新昌县羽林街道全顺机械厂 | High efficiency bearing detection device |
CN106334676A (en) * | 2016-08-25 | 2017-01-18 | 韦士肯(厦门)检测科技有限公司 | Automatic comprehensive detecting equipment for bearing loop |
CN108240991A (en) * | 2016-12-27 | 2018-07-03 | 研祥智能科技股份有限公司 | Magnetic shoe on-line measuring device |
CN107639038B (en) * | 2017-10-31 | 2024-01-09 | 山东爱通工业机器人科技有限公司 | Automatic detection platform for product flaws |
CN109835522A (en) * | 2017-11-28 | 2019-06-04 | 郭祥飞 | A kind of spring circulation splicing sorting equipment for bag-spring machine |
CN108709885B (en) * | 2018-03-02 | 2020-12-18 | 江苏保捷精锻有限公司 | Spheroidizing annealing metallographic examination method for bearing product |
CN108303428A (en) * | 2018-04-09 | 2018-07-20 | 徐州工程学院 | Garlic non-destructive testing device |
CN109579669B (en) * | 2018-11-16 | 2020-11-24 | 浙江来福谐波传动股份有限公司 | Batch detection device and method for excircle degree of steel wheel of harmonic reducer |
CN109612425A (en) * | 2018-12-06 | 2019-04-12 | 江南大学 | A kind of rotor vision measurement machine |
CN109895525A (en) * | 2019-01-18 | 2019-06-18 | 平顶山学院 | A kind of news release generation system and method |
CN110201903A (en) * | 2019-05-31 | 2019-09-06 | 广东斯玛特自动化科技有限公司 | Tank bottom coding detection device |
CN110346375B (en) * | 2019-08-19 | 2024-03-08 | 珠海格力智能装备有限公司 | Capacitance detection device |
CN110672726A (en) * | 2019-11-14 | 2020-01-10 | 哈尔滨理工大学 | Bearing rolling element defect detection equipment |
CN111438075A (en) * | 2020-03-26 | 2020-07-24 | 浙江科技学院 | Rolling body surface detection device and rolling body surface detection method |
CN214324576U (en) * | 2020-09-11 | 2021-10-01 | 苏州迈为科技股份有限公司 | Double-piece printing equipment for solar cell pieces |
CN112229844B (en) * | 2020-10-10 | 2024-06-04 | 中兴盛达电气技术(郑州)有限公司 | Workpiece surface defect detection equipment |
CN112742742B (en) * | 2020-12-28 | 2022-12-27 | 广东顶固集创家居股份有限公司 | Bearing sorting system |
CN112775019B (en) * | 2020-12-28 | 2022-08-12 | 广东拓斯达科技股份有限公司 | Size detection mechanism and detection equipment |
CN113942798B (en) * | 2021-11-03 | 2022-04-19 | 强企创新科技有限公司 | Rotary positioning platform and detection system with same |
CN114671181B (en) * | 2022-04-06 | 2022-09-16 | 浙江五洲新春集团股份有限公司 | Automatic change roller and detect integrative production line of packing |
CN114850070B (en) * | 2022-05-06 | 2023-12-15 | 浙江科技学院 | Surface defect detection device for drum-shaped bearing roller |
CN114627115B (en) * | 2022-05-13 | 2022-08-30 | 济宁安泰矿山设备制造有限公司 | Dynamic balance detection system and fluid pump impeller production line using same |
CN115445945B (en) * | 2022-10-11 | 2024-05-24 | 景德镇陶瓷大学 | Multilayer defect classification's silicon nitride bearing ball defect nondestructive test device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202655251U (en) * | 2012-06-29 | 2013-01-09 | 黑龙江大学 | Ball bearing inner-outer lantern-ring sorting assembling machine |
CN102962210A (en) * | 2012-12-20 | 2013-03-13 | 山东省宇捷轴承制造有限公司 | Automatic roller sorting machine |
CN203253650U (en) * | 2013-03-22 | 2013-10-30 | 何宏祥 | Fully-automatic bearing roller appearance detector |
CN203330005U (en) * | 2013-07-09 | 2013-12-11 | 洛阳久德轴承模具技术有限公司 | Bearing rolling body surface defect detecting system |
CN203711341U (en) * | 2014-01-29 | 2014-07-16 | 洛阳久德轴承模具技术有限公司 | Detection system for bearing rolling body |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101192685B1 (en) * | 2010-10-25 | 2012-10-26 | 신서근 | Apparatus for sorting bearing ball |
-
2014
- 2014-01-29 CN CN201410042685.6A patent/CN103801518B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202655251U (en) * | 2012-06-29 | 2013-01-09 | 黑龙江大学 | Ball bearing inner-outer lantern-ring sorting assembling machine |
CN102962210A (en) * | 2012-12-20 | 2013-03-13 | 山东省宇捷轴承制造有限公司 | Automatic roller sorting machine |
CN203253650U (en) * | 2013-03-22 | 2013-10-30 | 何宏祥 | Fully-automatic bearing roller appearance detector |
CN203330005U (en) * | 2013-07-09 | 2013-12-11 | 洛阳久德轴承模具技术有限公司 | Bearing rolling body surface defect detecting system |
CN203711341U (en) * | 2014-01-29 | 2014-07-16 | 洛阳久德轴承模具技术有限公司 | Detection system for bearing rolling body |
Also Published As
Publication number | Publication date |
---|---|
CN103801518A (en) | 2014-05-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103801518B (en) | A kind of detection system for bearing roller | |
CN203711341U (en) | Detection system for bearing rolling body | |
CN203720104U (en) | Conveying and image detecting device for bearing roller detecting system | |
CN111014079B (en) | Bearing defect detection device and bearing defect detection method | |
CN103264019B (en) | Tapered roller surface defect detection system | |
CN203417857U (en) | Automatic detecting system for surface defects of bearing rollers | |
CN203209331U (en) | Roller side defect detection system | |
CN203764553U (en) | Detection system for bearing rolling body | |
CN103920650A (en) | Automatic detection apparatus | |
CN104209272B (en) | A kind of equipment carrying out product sorting according to image information | |
CN105382368B (en) | A kind of battery miaow head welding equipment | |
CN203330007U (en) | Automatic detection system for tapered rollers | |
CN203792158U (en) | Deoiling machine-flat-stone mill automation trussed robot | |
CN113714143A (en) | Commutator size and appearance defect detection equipment based on CCD vision | |
CN203191487U (en) | DC wire automatic detection machine | |
CN102248249B (en) | Loading device of machine for welding tin-coated strip on solar cell chip | |
CN109580641A (en) | A kind of notebook computer panel automatic detection device | |
CN105423930A (en) | Turntable type sleeve detection system | |
CN102530300B (en) | A kind of Full-automatic carrot cleaning, grading packing device | |
CN203714811U (en) | Conveying device for bearing roller testing equipment | |
WO2018171139A1 (en) | High-precision automatic mirror inspection device and working method therefor | |
CN206074046U (en) | A kind of lithium battery welds testing equipment | |
CN203900017U (en) | Ultrasonic cleaning equipment | |
CN209215247U (en) | A kind of glass insulator quality inspection device | |
CN205146817U (en) | Tubular product internal surface blows stopper machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20210129 |