CN217059974U - Fixed fretwork pattern thin metal product quality on-line measuring device - Google Patents
Fixed fretwork pattern thin metal product quality on-line measuring device Download PDFInfo
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- CN217059974U CN217059974U CN202123255435.5U CN202123255435U CN217059974U CN 217059974 U CN217059974 U CN 217059974U CN 202123255435 U CN202123255435 U CN 202123255435U CN 217059974 U CN217059974 U CN 217059974U
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Abstract
The utility model discloses a fixed fretwork pattern thin metal product quality on-line measuring device, including detector input conveyer belt, detector output conveyer belt, motor, light source, get like darkroom, linear array camera module, controller, mobile marking equipment, wireless communication module; the detector output conveyor belt is arranged right in front of the running direction of the detector input conveyor belt, a lighting opening is reserved between the detector input conveyor belt and the detector output conveyor belt, a light source is arranged below the lighting opening, the image taking darkroom is arranged above the lighting opening, the linear array camera module is fixed in the image taking darkroom, and the detector output conveyor belt is provided with a movable marking device along the front of the moving direction for marking defects. The utility model discloses an innovation point lies in with production data real-time storage, can provide digital product data simultaneously, can provide product quantity to management system, data such as qualification rate support production data ization management, have saved manpower resources and place resource.
Description
Technical Field
The utility model belongs to the technical field of the intellectual detection system, a online quality detection device of sheet metal product is related to, more specifically says, relates to a fixed fretwork pattern thin metal product quality online detection device.
Background
Modern manufacturing industry tends to the characteristics of multiple varieties and small batch, the flexible requirement on production in the field of thin plate processing is higher and higher, and the quality detection of workpieces in the production process is very important. The metal sheet product is a production line which is connected with a conveyor belt, and fixed patterns are hollowed out on the metal sheet after the metal sheet product is processed by equipment. Sheet metal products having a thickness of less than 0.5mm (area greater than 10x10mm) can unexpectedly develop defects having a diameter of less than 0.5mm during the manufacturing process, and products with such defects must be marked for subsequent processing.
The current detection method is human eye identification under the condition of a back projection light source, and because the diameters of most defects are about 0.1mm, many missed detections can be generated due to human eye fatigue and insufficient human eye identification precision, and the delivery quality of products is influenced. When the manual detection is carried out, manual resources and field resources are occupied when the production is carried out. It is not easy to perform datamation management.
Compared with the prior art, the machine vision detection technology has the advantages of non-contact, high speed, high precision, strong anti-interference capability and the like, is widely applied to the fields of product quality detection and the like, provides an effective solution for solving the problem of automatic measurement of products, can send out warning information in time when defects are detected, avoids the generation of batch waste products, and is favorable for improving the production efficiency and the automation level of a production line.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model adopts the technical scheme that: an on-line detection device for the quality of a fixed hollow pattern thin metal product comprises a detector input conveyor belt, a detector output conveyor belt, a motor, a light source, an image capture darkroom, a linear array camera module, a controller and a wireless communication module; the detector output conveyor belt is arranged right in front of the running direction of the detector input conveyor belt, an irradiation port is reserved between the detector input conveyor belt and the detector output conveyor belt, the heights of the surfaces of the detector input conveyor belt and the detector output conveyor belt are consistent, and the detector input conveyor belt and the detector output conveyor belt are connected with the motor and run in the same direction and at the same speed; a light source is arranged below the irradiation port, the light source is a plane uniform light source, the light source irradiates upwards, and the widths of the light source, the detector input conveyor belt and the detector output conveyor belt are the same; the image capturing darkroom is arranged above the irradiation port, the shell of the image capturing darkroom is made of light-tight materials, the lower part of the image capturing darkroom is close to the input conveyor belt and the output conveyor belt of the detector in an acceptable range to the maximum extent, the width of the image capturing darkroom is not smaller than a product to be detected, and the length of the image capturing darkroom is not smaller than the irradiation port; the linear array camera module is fixed in the image capturing darkroom, and a lens faces downwards; the detector output conveyor belt is provided with a movable marking device in front of the moving direction for marking defects; the controller is connected with the linear array camera module, the mobile marking equipment and the wireless communication module.
Furthermore, the mobile marking equipment comprises a precise lead screw and a positioning code spraying machine, the effective moving range of the precise lead screw is larger than the width of the output conveyor belt of the detector, the precise lead screw further comprises a lead screw controller, a lead screw positioner and a sliding block, the lead screw controller is connected with the lead screw positioner and the sliding block, the lead screw controller controls the sliding block to move, the lead screw positioner is used for positioning the position of the sliding block, and the positioning code spraying machine is mounted on the sliding block and used for marking defects; the controller is connected with the lead screw controller and the positioning inkjet printer.
Furthermore, a plurality of positioning inkjet printers are arranged on the output conveyor belt of the detector side by side and used for marking a plurality of defects of the same product to be detected.
Furthermore, the mobile marking equipment comprises a precise lead screw and a robot hand, the effective moving range of the robot hand is larger than the width of the output conveyor belt of the detector, the precise lead screw further comprises a lead screw controller, a lead screw positioner and a slide block, the lead screw controller is connected with the lead screw positioner and the slide block, the lead screw controller controls the slide block to move, the lead screw positioner is used for fixing the position of the slide block, and the robot hand is mounted on the slide block and used for grabbing a product to be detected with defects; the controller is connected with the lead screw controller and the robot hand.
Furthermore, a plurality of robots are arranged on the detector output conveyor belt side by side and used for grabbing a plurality of products to be detected with defects, which are detected simultaneously.
Furthermore, the device also comprises a conveyor belt bracket, wherein the detector input conveyor belt, the detector output conveyor belt, the light source, two side edges of the image capture darkroom and the mobile marking equipment are all arranged on the conveyor belt bracket.
Furthermore, get for instance darkroom lower extreme edge outside horizontal extension and go out the shading eaves, the shading eaves with detector input conveyer belt and detector output conveyer belt are parallel, shading eaves length at the maximum extension of acceptable within range.
Further, the line camera module also comprises an image sensor, photosensitive pixels of the image sensor are only one line, and a minimum of 4096 pixels are used for obtaining a high-definition high-resolution image through scanning.
Further, the light source also comprises a light source controller, wherein the light source controller is connected with the controller and used for adjusting the light source irradiation brightness and the switch.
Furthermore, the system also comprises a visual operation screen which is connected with the controller through a wireless communication module.
The beneficial effects of the utility model are that:
(1) the utility model discloses use with the production line is the technological extension of former production line.
(2) The image recognition technology ensures the detection precision of more than 99 percent, improves the quality and the quantity of products, effectively eliminates the missing detection and improves the product quality.
(3) The utility model discloses saved the occupation of land of original off-line manual work detection, the utility model discloses saved a large amount of manual works, reduced product cost, saved manpower resources and place resource.
(4) The utility model discloses with production data real-time storage, can provide digital product data simultaneously, can provide product quantity to management system, data such as qualification rate support production data ization management.
(5) The utility model discloses can with the intelligent upgrading direct communication connection of production line in low reaches, the reliable formation of image of fault has been guaranteed in automatic light source adjustment.
Drawings
In order to better express the technical scheme of the utility model, the following description of the carrying out drawings of the utility model is as follows:
FIG. 1 is a schematic view of an embodiment of the present invention;
the reference numbers illustrate: 1. a product to be tested; 11. a direction of travel; 2. a production line; 3. a production line output conveyor belt; 4. the production line output conveyor belt is connected with the detector input conveyor belt through a gap; 5. a detector input conveyor belt; 6. a light source; 7. a detector output conveyor; 8. taking an image in a darkroom; 9. taking a picture of a darkroom shell; 10. a line camera module; 11. a controller; 12. positioning an ink-jet printer; 13. a lead screw positioner; 14. a lead screw controller; 15. an irradiation port; 16. a shading brim; 17. a material inlet of a darkroom.
Detailed Description
The present invention will be described and explained more fully with reference to the accompanying drawings, so that those skilled in the art can better understand the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, unless otherwise explicitly stated or limited in the description of the present invention, the terms "mounted," "connected" and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model relates to an online defect detection device, which is connected with a production line 2. The utility model discloses a continuous image on detector input conveyer belt 5 and the detector output conveyer belt 7 is acquireed to linear array photoelectric image scanning technique, then adopts software image processing identification technique, identifies the fault to calculate the location coordinate for edge coordinate, the velocity of motion of detector output conveyer belt 7, send for the removal marking device locating information in back. The utility model discloses a length definition is for the size along conveyer belt advancing direction, and the width definition is on same horizontal plane, perpendicular to conveyer belt advancing direction's size.
In the embodiment, referring to fig. 1, an on-line detection device for quality of a fixed hollow-out pattern thin metal product comprises a detector input conveyor belt 5, a detector output conveyor belt 7, a motor, a light source 6, an image capture darkroom 8, a linear array camera module 10, a controller 11, a wireless communication module, a conveyor belt bracket and a visual operation screen; the detector output conveyor belt 7 and the detector input conveyor belt 5 run along the conveyor belt running direction 11 at the same time, the detector output conveyor belt 7 is installed right ahead of the detector input conveyor belt 5 in the running direction, an irradiation port 15 is reserved between the detector input conveyor belt 5 and the detector output conveyor belt 7, the detector input conveyor belt 5 and the detector output conveyor belt 7 are identical in surface height, are connected with the same motor, and run at the same speed; a light source 6 and a light source controller are arranged under the irradiation port 15, the light source 6 is a plane uniform light source, the light source 6 irradiates upwards, the widths of the light source 6, the detector input conveyor belt 5 and the detector output conveyor belt 7 are the same, and the light source controller is connected with the controller 11 and adjusts the irradiation brightness and the on-off of the light source 6.
An image-taking darkroom 8 is arranged above the irradiation port 16, an image-taking darkroom shell 9 is made of opaque materials, the lower part of the image-taking darkroom 8 is close to the detector input conveyor belt 5 and the detector output conveyor belt 7 in an acceptable range to the maximum extent, a space for a product to be detected to pass is reserved between the lower part of the image-taking darkroom 8 and the detector input conveyor belt 5 and the detector output conveyor belt 7, and a darkroom material inlet 17 is a space inlet; the width of the image-taking darkroom 8 is not less than that of the product 1 to be measured, the length of the image-taking darkroom 8 is not less than that of the illuminating opening 15, and the length of the image-taking darkroom 8 is designed according to the size of the product 1 to be measured. The linear array camera module 10 is fixed in the image-taking darkroom 8, and the lens faces downwards; get for instance 8 lower extreme edges of darkroom and outwards transversely extend out shading eaves 16, shading eaves 16 are directly over detector input conveyer belt 5 and detector output conveyer belt 7, and are parallel with detector input conveyer belt 5 and detector output conveyer belt 7, and 16 maximum extension of shading eaves length in the acceptable range to the light leak that makes for getting for instance darkroom 8 is as little as possible. The line camera module 10 also includes an image sensor having only one row of sensitive pixels, using a minimum of 4096 pixels, which produces a high definition, high resolution image by scanning.
The general camera is a plane camera, that is, the photosites are on a plane, the number of pixels is 16, so if the pixels are 1024 × 1024, that is, 100 ten thousand pixels, the lens projects the image on the plane, and one exposure is formed. If pixel 2048 x 2048 is replaced, the resolution is higher, looking more carefully. The linear array camera module 10 used in the scanner of this embodiment is a linear array CCD camera, i.e. the light sensing points are on a line, and each exposure is a line, if the object to be photographed moves at a uniform speed in the same direction, and multiple images are formed by multiple exposures, which together form one image. The advantage of the line CCD camera is that 4096, 8192, 16384 and more pixels can be distributed on a line, so that along the line direction, the resolution is high, smaller objects can be seen at the same distance, and the total pixels of a frame of image are not much, so that the signal processing is convenient. The utility model provides a fault is the very little hole of diameter, consequently needs resolution ratio high, moves on detector input conveyer belt 5 and detector output conveyer belt 7, as long as the discernment of one just can be continuous discovery aperture, and can not be repeated. If a planar camera is used, there will be an overlap of the front and back 2 frame image shots, the exact location of the pinhole will not be separated by the overlap, and the resolution of the planar camera along the individual directions will not be sufficient.
Detector output conveyer belt 7 is along the installation removal marking device in moving direction the place ahead, removal marking device includes accurate lead screw and location ink jet numbering machine 12, the effective moving range of accurate lead screw is greater than the width of detector output conveyer belt 7, accurate lead screw still includes lead screw controller 14, lead screw locator 13 and slider, controller 11 connects lead screw controller 14, lead screw controller 14 connects lead screw locator 13 and slider, lead screw controller 14 control slider removes, lead screw locator 13 is used for fixing a position the slider position, installation location ink jet numbering machine 12 on the slider, controller 11 connects location ink jet numbering machine 12, be used for marking the fault. The detector input conveyor belt 5, the detector output conveyor belt 7, the light source 6, two side edges of the image-taking darkroom 8 and the mobile marking device are all arranged on the conveyor belt bracket. The controller 11 is also connected with the line camera module 10 and the wireless communication module. The controller 11 is connected with the visual operation screen through a wireless communication module.
The difference between the second embodiment and the first embodiment is that a plurality of positioning inkjet printers 12 are arranged side by side on the detector output conveyor belt 7 and are used for marking a plurality of defects of the same product to be detected.
The difference between the third embodiment and the first embodiment is that the mobile marking equipment comprises a precise lead screw and a robot hand, the effective moving range of the robot hand is larger than the width of the detector output conveyor belt 7, the precise lead screw further comprises a lead screw controller 14, a lead screw positioner 13 and a sliding block, the lead screw controller 14 is connected with the lead screw positioner 13 and the sliding block, the lead screw controller 14 controls the sliding block to move, the lead screw positioner 13 is used for fixing the position of the sliding block, and the robot hand is mounted on the sliding block and used for grabbing the defective product 1 to be detected; the controller 11 is connected with a lead screw controller 14.
The difference between the fourth embodiment and the first embodiment is that a plurality of robots are arranged side by side on the detector output conveyor belt 7 for picking up a plurality of defective products 1 to be tested which are simultaneously tested.
The utility model discloses the principle: get for instance 8 cooperation light sources 6 transmission in darkroom, enable the image definition of fault and strengthen very much, adopt the higher linear array camera module 10 of pixel to improve discernment fault sensitivity, the utility model discloses linear array camera module 10 uses black and white camera. The formation of the scanned image can be completed by moving the product 1 to be measured (i.e., the metal sheet) to pass through the detector input conveyor 5 and the detector output conveyor 7 in sequence. The brightness of the light source 6 is adjustable, the brightness adjustment is adjusted according to the hollowed proportion of the product 1 to be detected, and if the average brightness of the transmitted light image is within the range of clear imaging, the imaging of the defects is not facilitated by too low brightness and too high brightness. The image processing technique includes: carrying out sharpening pretreatment on an image; finding a special positioning point on the product 1 to be detected; after coordinate transformation, pixel-level difference operation is directly carried out on the transformed coordinate and the stored sample, whether a different point (namely a defect) exists or not is judged, if no different point exists, the product is qualified, and if only one different point exists, the product is judged to be unqualified; if the position is judged to be unqualified, coordinate operation of the different points relative to the position of the positioning inkjet printer 12 is carried out, and the marking operation is controlled; a robot hand may also be used for the grasping operation. The speed of the detector input conveyor belt 5 and the detector output conveyor belt 7 is slightly higher than that of the production line output conveyor belt 3, so that the products 1 to be detected are prevented from being accumulated.
The detector input conveyor belt 5 and the detector output conveyor belt 7 use the same motor as a driving mechanism to keep the speed consistent. The distance from the line-scan camera module 10 to the positioning inkjet printer 12 is to ensure the calculation time of the controller and the time for the precise screw to run in place, and a speed regulation range is required. The width of the light source 6 and the length of the light opening 15 (dimension in the direction of travel 11 of the conveyor) do not exceed one third of the length of the product 1 to be measured, generally speaking, the length of the light opening is designed to be not more than 5cm, and the length of the light source 6 is designed to be at least 2 cm, so as to form a theoretically plane uniform light source 6.
The using method comprises the following steps: product 1 that awaits measuring on detector input conveyer belt 5 and the detector output conveyer belt 7 removes out the back from production line output conveyer belt 3, is connected space 4 through production line output conveyer belt 3 and detector input conveyer belt 5, directly is sent the utility model discloses on the detector input conveyer belt 5 of device, begin to get into and measure the workshop section. The luminance of the plane light emitted by the light source 6 is uniform, the luminance is adjustable, the color is adjustable, white light is preferred in detection, and the to-be-detected product 1 passes through the light source 6 and the hollow part forms a transmission light image. When the product 1 to be measured moves to the irradiation port 15 through the conveyor belt, the line camera module 10 above the light source 6 scans the light image to obtain an electrical image signal, and the electrical image signal is sent to the controller 11 for processing and identification. After the controller 11 identifies the defect, the coordinates of the position of the spray mark are calculated according to the running speed of the detector output conveyor belt 7, and two coordinates need to be located, namely the ordinate along the width direction of the detector output conveyor belt 7 and the abscissa along the advancing direction 11 of the detector output conveyor belt 7. The controller 11 transmits the information of the abscissa and the ordinate to the lead screw controller 14, the lead screw controller 14 controls the lead screw positioner 13 to position the positioning slide block to move to the position of the ordinate, the lead screw controller 14 controls the precise lead screw to move along the advancing direction 11 at the same time, and after the positioning is finished, the controller 11 sends an instruction to the positioning code spraying machine 12 or a robot hand to finish the positioning code spraying process or the grabbing process. The distance between the positioning code spraying machine 12 and the distance between the robot arm and the output conveyor belt 7 of the detector are as close as possible, and the code spraying or grabbing process is matched. Meanwhile, the controller 11 stores the production and detection data in a warehouse, and if a communication request exists, the production and detection data exchange with a management system according to a communication protocol. The utility model discloses the part that uses is general purchasable part.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (10)
1. An on-line detection device for the quality of a fixed hollow-out pattern thin metal product is characterized by comprising a detector input conveyor belt, a detector output conveyor belt, a motor, a light source, an image-taking darkroom, a linear array camera module, a precise screw rod, an ink-jet printer, a controller and a wireless communication module; the detector output conveyor belt is arranged right ahead of the running direction of the detector input conveyor belt, an irradiation port is reserved between the detector input conveyor belt and the detector output conveyor belt, the surface heights of the detector input conveyor belt and the detector output conveyor belt are consistent, and the detector input conveyor belt and the detector output conveyor belt are connected with the motor and run in the same direction and at the same speed; a light source is arranged below the irradiation port, the light source is a plane uniform light source, the light source irradiates upwards, and the widths of the light source, the detector input conveyor belt and the detector output conveyor belt are the same; the image capture darkroom is arranged above the irradiation port, the shell of the image capture darkroom is made of opaque materials, the lower part of the image capture darkroom is close to the input conveyor belt of the detector and the output conveyor belt of the detector in an acceptable range to the greatest extent, the width of the image capture darkroom is not smaller than a product to be detected, and the length of the image capture darkroom is not smaller than the irradiation port; the linear array camera module is fixed in the image capturing darkroom, and a lens faces downwards; a movable marking device is arranged in front of the output conveyor belt of the detector along the moving direction and is used for marking defects; the controller is connected with the linear array camera module, the mobile marking equipment and the wireless communication module.
2. The on-line detection device for quality of fixed hollow-out pattern thin metal products as claimed in claim 1, wherein the mobile marking device comprises a precision lead screw and a positioning inkjet printer, the effective moving range of the precision lead screw is larger than the width of the output conveyor belt of the detector, the precision lead screw further comprises a lead screw controller, a lead screw positioner and a slider, the lead screw controller is connected with the lead screw positioner and the slider, the lead screw controller controls the slider to move, the lead screw positioner is used for positioning the position of the slider, the positioning inkjet printer is mounted on the slider, and the controller is connected with the lead screw controller and the positioning inkjet printer and is used for marking defects.
3. The device for the on-line detection of the quality of the fixed hollow-out pattern thin metal products as claimed in claim 2, wherein a plurality of the positioning code spraying machines are arranged side by side on the output conveyor belt of the detector and are used for marking a plurality of defects of the same product to be detected.
4. The device for on-line detection of the quality of the fixed hollow-out pattern thin metal product as claimed in claim 1, wherein the moving marking equipment comprises a precision lead screw and a robot hand, the effective moving range of the robot hand is larger than the width of the output conveyor belt of the detector, the precision lead screw further comprises a lead screw controller, a lead screw positioner and a slide block, the lead screw controller is connected with the lead screw positioner and the slide block, the lead screw controller controls the slide block to move, the lead screw positioner is used for fixing the position of the slide block, the robot hand is mounted on the slide block, and the controller is connected with the lead screw controller and the robot hand and is used for grabbing the product to be detected with the defect.
5. The device for the on-line detection of the quality of the fixed hollow pattern thin metal products as claimed in claim 4, wherein a plurality of the robots are arranged side by side on the output conveyor belt of the detector and used for picking out a plurality of defective products to be detected which are detected simultaneously.
6. The on-line detection device for quality of fixed hollow-out pattern thin metal products as claimed in claim 1, further comprising a conveyor belt support, wherein the detector input conveyor belt, the detector output conveyor belt, the light source, two side edges of the image capture darkroom and the mobile marking equipment are all mounted on the conveyor belt support.
7. The device for on-line detection of the quality of the fixed hollow-out pattern thin metal products as claimed in claim 1, wherein a light-shielding eave is transversely extended outwards from the edge of the lower end of the image capture darkroom, the light-shielding eave is parallel to the detector input conveyor belt and the detector output conveyor belt, and the length of the light-shielding eave is extended to the maximum extent within an acceptable range.
8. The on-line detection device for quality of fixed hollow-out pattern thin metal products as claimed in claim 1, wherein the line camera module further comprises an image sensor, the photosensitive pixels of the image sensor are a row, and a minimum of 4096 pixels is used to obtain a high-definition high-resolution image by scanning.
9. The on-line detection device for the quality of the fixed hollow-out pattern thin metal product as claimed in claim 1, wherein the light source further comprises a light source controller, the light source controller is connected with the controller, and the light source controller is used for adjusting the illumination brightness and the switch of the light source.
10. The on-line detection device for quality of fixed hollow-out pattern thin metal products as claimed in claim 1, further comprising a visual operation screen connected to the controller through a wireless communication module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123255435.5U CN217059974U (en) | 2021-12-22 | 2021-12-22 | Fixed fretwork pattern thin metal product quality on-line measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123255435.5U CN217059974U (en) | 2021-12-22 | 2021-12-22 | Fixed fretwork pattern thin metal product quality on-line measuring device |
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| CN217059974U true CN217059974U (en) | 2022-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166856A (en) * | 2021-12-22 | 2022-03-11 | 大连理工江苏研究院有限公司 | Fixed fretwork pattern thin metal product quality on-line measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166856A (en) * | 2021-12-22 | 2022-03-11 | 大连理工江苏研究院有限公司 | Fixed fretwork pattern thin metal product quality on-line measuring device |
| CN114166856B (en) * | 2021-12-22 | 2024-06-18 | 大连理工江苏研究院有限公司 | Fixed fretwork pattern thin metal product quality on-line measuring device |
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