CN210847221U - Glass defect on-line measuring equipment - Google Patents
Glass defect on-line measuring equipment Download PDFInfo
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- CN210847221U CN210847221U CN201921594647.6U CN201921594647U CN210847221U CN 210847221 U CN210847221 U CN 210847221U CN 201921594647 U CN201921594647 U CN 201921594647U CN 210847221 U CN210847221 U CN 210847221U
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Abstract
The utility model discloses a glass defect on-line measuring equipment for detect surface defect and the marginal defect of glass piece or other slice products, include: the conveying mechanism is used for driving the product to be detected to advance at a certain speed; the surface detection mechanism comprises a front detection device and a back detection device and is used for respectively detecting the upper surface and the lower surface of a product to be detected; the edge detection mechanism comprises a plurality of sets of edge detection devices which are arranged on the conveying mechanism at certain intervals, and the plurality of sets of edge detection devices can realize the covering detection of all edges of products to be detected. The utility model discloses can carry out real-time on-line measuring analysis to defects such as the surface of glass piece or other slice products and side, the degree of accuracy is high, and it is fast to detect, need not to pause in the testing process, and degree of automation is high, not only can replace artifical the detection, moreover greatly reduced artifical visual fatigue bring leak hunting and the false positive.
Description
Technical Field
The utility model relates to a glass defect on-line measuring equipment, further, belong to the general check out test set of glass defect in the machine vision field.
Background
With the development of economy, automobiles have already entered ordinary households, and the yield of automobile glass is higher and higher. However, since automobile glass production enterprises have very high requirements on glass on-line detection, especially glass edge edging detection, the detection technology in this aspect is a blank in China, and high-end detection technologies are always mastered by foreign manufacturers.
In addition, the existing glass defect detection equipment also has the problems of low detection precision, high missing detection and false detection rate, pause in the test process, low production rate and the like.
Therefore, how to provide an online glass defect detection device, which can effectively overcome the above defects in the prior art, is an important research topic for those skilled in the art in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least.
Therefore, the utility model aims to provide a glass defect on-line measuring equipment for detect glass piece or other sheet product's surface defect and edge defect, specifically include:
the conveying mechanism is used for driving the product to be detected to advance at a certain speed;
the surface detection mechanism comprises a front detection device and a back detection device and is used for respectively detecting the upper surface and the lower surface of the product to be detected;
the edge detection mechanism comprises a plurality of sets of edge detection devices which are arranged on the conveying mechanism at certain intervals, and the plurality of sets of edge detection devices can realize the coverage detection of all edges of the product to be detected;
and the waste kicking mechanism comprises a conveying roller and a transplanting manipulator and is used for removing the defective products.
The front and back detection sequences of the middle surface detection mechanism and the edge detection mechanism of the utility model can be exchanged, the surface detection mechanism can be in front, and the edge detection mechanism is in back; or the edge detection mechanism is in front and the surface detection mechanism is in back. Moreover, the surface detection mechanism and the edge detection mechanism can be used independently and respectively form independent equipment, so that the detection with single function is realized.
The utility model relates to a glass defect on-line measuring equipment, the method based on advanced machine vision is used for detecting surface defect and the edge defect of glass piece or other slice products, like solar energy glass, LCD screen, building glass, car glass etc.. The utility model discloses can carry out real-time on-line measuring analysis to defects such as glass piece or other slice product surface collapse limit, fingerprint, mar, stain, crackle, bubble, flaw and side grinding are bad, the degree of accuracy is high, and detection speed is fast, need not to pause in the testing process, and degree of automation is high, not only can replace artifical the detection, moreover greatly reduced the tired hourglass of bringing of artifical vision examine and the false retrieval.
On the basis of the technical scheme, the utility model discloses still can make following improvement:
preferably, a plurality of photoelectric sensors are mounted on the conveying mechanism and used for sensing the advancing position of the product to be detected and carrying out quantity statistics so as to trigger the corresponding front detection device, the back detection device and the edge detection device.
The photoelectric sensor can be replaced by a laser correlation switch.
Preferably, the transportation mechanism comprises a power roller driven by an external motor and a rubber ring sleeved on the power roller, and the rubber ring is used for assisting the product to be detected to move forward.
Preferably, the front detection device includes a first light source and a first camera located above the product to be detected, and light rays emitted by the first light source and reflected back after contacting the upper surface of the product to be detected are received by the first camera; the back detection device comprises a second light source and a second camera which are positioned below the product to be detected, and light rays emitted by the second light source and reflected back after contacting the lower surface of the product to be detected can be received by the second camera.
The utility model discloses in, positive detection device and back detection device's structure and light path are the same, and the position is relative for detect the positive defect and the back defect of product respectively, and finally send the defect that detects to corresponding computer and carry out analysis and processing, in this testing process, wait to detect the product and need not to pause.
Preferably, the installation positions of the first light source and the first camera above the product to be detected are opposite to the installation positions of the second light source and the second camera below the product to be detected.
For avoiding mutual interference, the utility model discloses a reverse design, position is the same about first light source and the second camera promptly, and position is the same about first camera and the second light source, and the light source just can not cause the interference to the heteropleural camera like this.
In addition, the first light source and the second light source are preferably high-brightness linear scanning strip-shaped light sources or strip-shaped surface light sources, and the length of the first light source and the second light source is not less than the width of the detected glass contour perpendicular to the advancing direction.
Preferably, an included angle between extension lines of light emitting ends of the first light source and the second light source and the product to be detected is 40-70 degrees, which is an optimal angle design range, and under the angle, images of the upper surface and the lower surface of the product to be detected can be shot most clearly and comprehensively.
Preferably, the edge detection devices are four or six sets; when the number of the four sets of the edge detection devices is four, the four sets of the edge detection devices are combined into a group two by two, the two groups of the edge detection devices are respectively positioned at two sides of the product to be detected, which are vertical to the advancing direction of the product to be detected, and are opposite to the edge of the product to be detected, and the four sets of the edge detection devices can realize the covering detection of all the edges of the product to be detected; when the number of the edge detection devices is six, the edge detection mechanism is additionally provided with one set of edge detection device between two sets of edge detection devices on the basis of four sets of edge detection devices.
In other words, six sets of edge detection devices are added with two sets of edge detection devices on the basis of four sets of edge detection devices according to the complexity of the glass profile and on two sides perpendicular to the traveling direction of the glass as required.
Preferably, the edge detection device comprises a laser power supply, a laser, a beam splitter, a light trap, a first prism, a second prism, a third prism and a third camera;
the laser detection light beam emitted by the laser is over against the edge of the product to be detected, the laser is driven by the laser power supply, and the laser power supply is controlled by the computer and the laser controller connected with the computer in a communication way;
the beam splitter is positioned between the laser and the product to be detected, the light splitting surface of the beam splitter and the laser detection light beam emitted by the laser form an angle of 44-46 degrees, so that the light path of the laser returning after emitting the laser and irradiating the surface of the glass sheet slightly deviates a certain angle, the interference of the emitting light path and the returning light path is avoided, the laser detection light beam emitted by the laser is transmitted by the beam splitter and is divided into a main light beam and an auxiliary light beam, the light trap is positioned on one side of the beam splitter, the connecting line of the light trap and the beam splitter is perpendicular to the main light beam, and the auxiliary light beam can be absorbed by the light trap; the main light beam can irradiate the edge of the product to be detected to be reflected, and the reflected main light beam reaches the third camera after being reflected by the beam splitter, the first prism, the second prism and the third prism step by step;
the first camera, the second camera and the third camera upload the shot image gray scale information to the computer for analysis, the computer is connected with a PLC, and the computer connected with the PLC can adjust the power of the laser through the laser controller by taking the image gray scale information shot by the cameras as a basis.
In particular, the first camera, the second camera and the third camera may be line scan cameras or area array cameras, preferably line scan cameras.
The utility model provides a several sets of edge detection device all adopts above-mentioned structure to design, and the laser detection light beam that the several laser instrument sent is aimed at respectively and is waited the different edges that detect the product, and at the in-process of marcing that waits to detect the product, many sets of edge detection device can realize the detection to detecting all edges of product, can not appear leaking the problem of examining, also need not to detect the product and pause in the testing process.
Preferably, the first prism with the second prism is fixed on a fixing frame, the third prism with the third camera is fixed on a fixing plate, the fixing frame is fixed on a guide rail, the guide rail is driven by a stepping motor or a servo motor to move up and down so as to change the length of the light path in the vertical direction, and the stepping motor or the servo motor is controlled by the computer.
In the process of advancing the product to be detected, the length of the light path is changed through the stepping motor or the servo motor, so that the total distance between the third camera and the edge of the product to be detected is basically constant within the acceptable range of the depth of field. For example, when the edge of the product to be detected has a concave section, the motor can control the first prism and the second prism to move downwards to enable the first prism and the second prism to approach the product to be detected; when the edge of the product to be detected has the convex section, the motor can control the first prism and the second prism to move upwards, so that the first prism and the second prism are far away from the product to be detected.
Preferably, the contour diagram of the product to be detected is input into a software program of the computer in advance, so that the computer can continuously transmit signals to the stepping motor or the servo motor to realize the control of the motor to match the contour.
Preferably, the design wavelength of the beam splitting film of the beam splitter is consistent with the laser central wavelength of the laser, and the diameter of a laser spot emitted by the laser is not less than the thickness of a product to be detected.
Preferably, the first prism, the second prism and the third prism are total reflection right-angle prisms, and can be quartz or other materials with higher light transmittance, and the side lengths of the laser incident surface and the laser emergent surface of the first prism and the second prism are both larger than the diameter of a laser spot.
Can know via foretell technical scheme, compare with prior art, the utility model discloses an online detection equipment of glass defect has following beneficial effect at least:
1) the utility model discloses can carry out real-time on-line measuring analysis to the surface of glass or other slice products collapse defects such as limit, fingerprint, mar, stain, crackle, bubble, flaw and side grinding are bad, the degree of accuracy is high, and detection speed is fast, need not to pause in addition in the test procedure, can not influence production rate.
2) The utility model discloses can the automatic adjustment laser illumination light intensity, the illumination error who exists when avoiding artifical the regulation.
3) The utility model discloses can be according to the profile automatic adjustment working distance who waits to detect the product, slice products such as glass of arbitrary shape can all be detected by the accuracy.
4) The utility model discloses can wait to examine the profile of product according to the difference, the initial position of the first and second prism of automatic calibration to leading-in difference is waited the tracking curve of waiting to examine the product profile, guarantees in the product detection of different profiles, and the third camera is basically invariable with the total distance that waits to detect the product edge at the acceptable within range of depth of field, realizes the fast switch-over of different glass specifications.
5) The utility model discloses the procedure algorithm is stable, and defect size affirmation standard passes through software configuration adjustable, not only can replace artifical the detection, has avoided the false retrieval and the hourglass inspection that causes because of artifical visual fatigue moreover.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of an online glass defect detecting apparatus provided by the present invention;
FIG. 2 is a first structural diagram of an online glass defect detecting apparatus provided by the present invention;
FIG. 3 is a second structural diagram of the glass defect on-line detection apparatus provided by the present invention;
FIG. 4 is an overall structure view of the glass defect on-line detecting apparatus provided by the present invention after being installed;
fig. 5 is a schematic structural diagram of an edge detection apparatus provided by the present invention;
fig. 6 is a schematic structural diagram of the waste kicking mechanism provided by the present invention;
wherein, in the figure,
1-a first camera, 2-a first light source, 3-a second light source, 4-a second camera; 5-laser, 6-laser power supply, 7-optical trap, 8-beam splitter, 9-first prism, 10-second prism, 11-third camera, 12-fixing frame, 13-guide rail, 14-stepping motor or servo motor, 15-computer, 16-glass sheet, 17-power roller, 18-rubber ring, 19-front detection device, 20-edge detection device, 21-photoelectric sensor I, 22-photoelectric sensor II, 23-third prism, 24-transplanting manipulator and 25-fixing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, 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 in specific cases to those skilled in the art.
The on-line detection device for glass defects according to the embodiments of the present invention is described in detail with reference to fig. 1 to 6.
Example (b):
as shown in fig. 1-6, the present invention discloses an on-line glass defect inspection apparatus, which is based on advanced machine vision method for inspecting surface defects and edge defects of glass sheets 16 or other sheet-like products, such as automotive glass.
The specific technical solution of the present embodiment will be described in detail below by taking the detection glass sheet 16 as an example.
The glass defect online detection equipment comprises: the device comprises a conveying mechanism, a surface detection mechanism, an edge detection mechanism and a waste kicking mechanism. The transport mechanism is used to drive the glass sheet 16 at a certain speed. The surface inspection mechanism includes a front inspection device 19 and a back inspection device for inspecting the upper and lower surfaces of the glass sheet 16, respectively. The edge detection mechanism comprises four or six sets of edge detection devices 20 which are arranged on the transportation mechanism at a certain interval, when the number of the edge detection devices is four, as shown in figure 2, the four sets of edge detection devices 20 are formed into a group in pairs, two sets of edge detection devices are respectively positioned at two sides of the glass sheet 16 which is vertical to the advancing direction of the glass sheet and are opposite to the edge of the glass sheet 16, and the four sets of edge detection devices 20 can realize the covering detection of all the edges of the glass sheet 16; in the case of six sets, as shown in fig. 3, the edge detection mechanism adds an additional set of edge detection devices 20 between each set of edge detection devices 20 to account for glass sheets 16 having complex profiles. The following embodiment is described in detail according to the specification of the edge detecting device 20 as four sets. The waste kicking mechanism comprises a conveying roller and a transplanting manipulator 24, and the transplanting manipulator 24 comprises a pneumatic lifting device and a transverse conveying device and is used for removing defective products.
In particular, the method comprises the following steps of,
as shown in fig. 1, two photosensors are mounted on the transport mechanism: a first photosensor 21 and a second photosensor 22. When the glass sheet 16 moves to the position of the first photoelectric sensor 21, the front detection device 19 and the back detection device are triggered to start; when the glass sheet 16 moves to the position of the second photosensor 22, the edge detection device 20 is triggered to activate.
The two photosensors described above may further be used for counting the number of glass sheets 16, and these photosensors may also be replaced by laser correlation switches.
The transport mechanism comprises a power roller 17 driven by an external motor and a rubber ring 18 sleeved on the power roller 17, wherein the rubber ring 18 is used for assisting the glass sheet 16 to move at a certain speed.
The front detection device 19 comprises a first light source 2 and a first camera 1 which are positioned above the glass sheet 16, and light rays emitted by the first light source 2 and reflected back after contacting the upper surface of the glass sheet 16 are received by the first camera 1; the back side detection device comprises a second light source 3 and a second camera 4 which are positioned below the glass sheet 16, and light rays reflected back after light rays emitted by the second light source 3 contact the lower surface of the glass sheet 16 can be received by the second camera 4. It should be further emphasized here that the number of cameras in the front face detection device 19 may not be limited to two, and depending on the width of the glass sheet 16, one light source may need one, two or even more cameras to capture images, ensuring complete coverage of the field of view.
In this embodiment, the mounting positions of the first light source 2 and the first camera 1 above the glass sheet 16 are opposite to the mounting positions of the second light source 3 and the second camera 4 below the glass sheet 16 so that the light sources do not interfere with the opposite-side cameras.
The angle between the extension of the light exit ends of the first light source 2 and the second light source 3 and the glass sheet 16 is preferably in the range of 40 ° to 70 °.
Further, the first light source 2 and the second light source 3 are preferably high-luminance line-scan stripe-shaped light sources or stripe-shaped surface light sources.
As shown in fig. 1 and 2, four sets of edge detection devices 20 are distributed around the edge of the glass sheet 16, and a specific structure of any one set of edge detection devices 20 will now be described:
as shown in fig. 5, the edge detection device 20 includes a laser power source 6, a laser 5, a beam splitter 8, a light trap 7, a first prism 9, a second prism 10, a third camera 11, a fixing frame 12, a guide rail 13, a stepping motor or a servo motor 14, a third prism 23, and a fixing plate 25;
the laser 5 is driven by a laser power supply 6, and the laser power supply 6 is controlled by a computer 15 and a laser controller connected with the computer 15 in a communication way;
the beam splitter 8 is positioned between the laser 5 and the glass sheet 16, the light splitting surface of the beam splitter 8 and the laser detection light beam emitted by the laser 5 form an angle of 44-46 degrees, preferably an angle of 45 degrees, the laser detection light beam emitted by the laser 5 is transmitted by the beam splitter 8 and is divided into a main light beam and a sub-light beam, the light trap 7 is positioned on one side of the beam splitter 8, the connecting line of the light trap 7 and the beam splitter 8 is vertical to the main light beam, and the sub-light beam can be absorbed by the light trap 7; the main light beam irradiates the edge of the glass sheet 16 to be reflected, and the reflected main light beam reaches the third camera 11 after being reflected step by the beam splitter 8, the first prism 9, the second prism 10 and the third prism 23;
the first camera 1, the second camera 4 and the third camera 11 upload the captured image gray scale information to the computer 15 for analysis, the computer 15 is connected with a PLC, and the computer 15 connected with the PLC adjusts the power of the laser 5 through the laser controller according to the image gray scale information captured by the cameras.
The computer 15 and the PLC may be implemented in one or two entities, and the computer 15 implements the operation of the motor through the PLC or the motion control card, for example, the PLC of Beckhoff in germany implements the function of softPLC in one computer 15; a motion control card can also be inserted into the computer 15 to realize the functions of part of the PLC; while most factory computers 15 and PLCs are separate devices.
The utility model discloses can carry out the accurate detection to the glass piece 16 of arbitrary shape, to the glass piece 16 of non-specification shape, especially in the region that 16 marginal curvatures of glass piece acutely change, according to the average gray value of region of interest (ROI), be connected with PLC's computer 15 can control laser controller, and the intensity of automatic increase or reduction fixed percentage guarantees that the average gray value of whole edge is balanced, and the defect consequently can be shot very clearly.
The first prism 9 and the second prism 10 are fixed on a fixed frame 12, the third prism 23 and the third camera 11 are fixed on a fixed plate 25, the fixed frame 12 is fixed on a guide rail 13, the guide rail 13 is driven by a stepping motor or a servo motor 14 to move up and down so as to change the length of a light path in the vertical direction, and the total distance between the third camera 11 and the edge of the glass sheet 16 is basically constant within the range allowed by the depth of field in the moving process of the glass sheet 16.
The stepper motor or servo motor 14 is controlled by a computer 15. In addition, other motors in the apparatus may also be controlled by the computer 15.
The profile of the glass sheet 16 must be entered into the software program of the computer 15 in advance to ensure that the computer 15 will continuously transmit signals to the stepping motor or servo motor 14 to control the motor.
In order to further optimize the above technical solution, the design wavelength of the beam splitting film of the beam splitter 8 should be consistent with the central wavelength of the laser 5, and the diameter of the laser spot emitted by the laser 5 should be not less than the thickness of the glass sheet 16 to be detected.
In order to further optimize the above technical solution, the first prism 9, the second prism 10, and the third prism 23 are total reflection right-angle prisms, which may be quartz or other materials with high light transmittance, and the side lengths of the laser incident surface and the laser emergent surface thereof should be larger than the diameter of the laser spot.
The utility model relates to a glass defect on-line measuring equipment's concrete working process does:
1. the glass sheet 16 travels at a certain speed over a rubber ring 18 on a powered roller 17;
2. when the glass sheet 16 moves to the position of the first photoelectric sensor 21, the first strip light source 2 and the second strip light source 3 are triggered to irradiate, and the first camera 1 and the second camera 4 are triggered to take a picture; specifically, light emitted by the first bar light source 2 is irradiated to the upper surface of the glass sheet 16, and is reflected by the upper surface of the glass sheet 16 to the first camera 1; the light emitted by the second strip-shaped light source 3 irradiates the lower surface of the glass sheet 16, and is reflected by the lower surface of the glass sheet 16 and then reaches the second camera 4;
3. when the glass sheet 16 continuously moves to the position of the second photoelectric sensor 22, the laser 5 is triggered to emit a laser detection beam and the third camera 11 is triggered to take a picture;
4. when the glass sheet 16 continuously moves to the position of the second photoelectric sensor 22, the stepping motor or the servo motor 14 is triggered to drive the prism to move up and down, specifically, the stepping motor or the servo motor 14 drives the guide rail 13 to drive the fixing frame 12 to move up and down to a set position, and the first prism 9 and the second prism 10 move along with the fixing frame 12;
5. the laser detection light beam emitted by the laser 5 is divided into two beams by the beam splitter 8, and the secondary light beam reaches the light trap 7 and is reflected and absorbed; the main light beam reaches the edge of the glass sheet 16 through the beam splitter 8, light irradiated to the edge of the glass sheet 16 is subjected to diffuse reflection, wherein a part of the diffuse reflection light returns to the beam splitter 8, and then the image of the edge of the glass sheet 16 is clearly reflected to the third camera 11 through the first prism 9, the second prism 10 and the third prism 23;
6. the first camera 1, the second camera 4 and the third camera 11 respectively upload imaging results to the computer 15, and a software program on the computer 15 automatically adjusts the power of the laser 5 according to the image gray scale information uploaded by the cameras by a laser power supply;
7. the computer 15 can analyze the type, size and position of the defect after program processing, and finally sends the defect to the PLC for waste kicking;
8. the waste kicking mechanism receives a PLC waste kicking signal, and then transfers the defective products to a defective product conveying line through the transplanting manipulator 24, so that the waste kicking is realized without stop.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An on-line glass defect inspection apparatus for inspecting surface and edge defects of glass sheets or other sheet-like products, comprising:
the conveying mechanism is used for driving the product to be detected to advance at a certain speed;
the surface detection mechanism comprises a front detection device (19) and a back detection device and is used for respectively detecting the upper surface and the lower surface of the product to be detected;
the edge detection mechanism comprises a plurality of sets of edge detection devices (20) which are arranged on the conveying mechanism at certain intervals, and the plurality of sets of edge detection devices (20) can realize the covering detection of all edges of the product to be detected;
and the waste kicking mechanism comprises a conveying roller and a transplanting manipulator (24) and is used for removing the defective products.
2. A glass defect on-line detection device according to claim 1, characterized in that a plurality of photoelectric sensors are installed on the transportation mechanism for sensing the advancing position of the products to be detected and counting the number of the products to be detected so as to trigger the corresponding front detection device (19), back detection device and edge detection device (20).
3. The on-line glass defect detection equipment according to claim 1, wherein the transportation mechanism comprises a power roller (17) driven by an external motor and a rubber ring (18) sleeved on the power roller (17), and the rubber ring (18) is used for assisting the product to be detected to advance.
4. The glass defect online detection equipment according to claim 1, wherein the front detection device (19) comprises a first light source (2) and a first camera (1) which are positioned above the product to be detected, and light rays emitted by the first light source (2) and reflected back after contacting the upper surface of the product to be detected are received by the first camera (1); the back detection device comprises a second light source (3) and a second camera (4) which are positioned below the product to be detected, and light rays emitted by the second light source (3) are received by the second camera (4) after contacting the lower surface of the product to be detected and reflected back.
5. A glass defect online detection device according to claim 4, characterized in that the installation positions of the first light source (2) and the first camera (1) above the product to be detected are opposite to the installation positions of the second light source (3) and the second camera (4) below the product to be detected.
6. A glass defect online detection device according to claim 4, characterized in that the included angle between the extension line of the light emitting ends of the first light source (2) and the second light source (3) and the product to be detected is 40-70 degrees.
7. The on-line glass defect detection equipment according to claim 1, wherein the edge detection devices (20) are four sets or six sets; when the number of the four sets of the edge detection devices (20) is four, the four sets of the edge detection devices (20) are combined into a group two by two, the two groups of the edge detection devices are respectively positioned at two sides of the product to be detected, which are vertical to the advancing direction of the product to be detected, and are opposite to the edge of the product to be detected, and the four sets of the edge detection devices (20) can realize the covering detection of all the edges of the product to be detected; and when the number of the edge detection mechanisms is six, the edge detection mechanism is additionally provided with one set of edge detection device (20) between two sets of edge detection devices on the basis of four sets of edge detection devices (20).
8. The glass defect online detection equipment according to claim 4, wherein the edge detection device (20) comprises a laser power supply (6), a laser (5), a beam splitter (8), a light trap (7), a first prism (9), a second prism (10), a third prism (23) and a third camera (11);
the laser detection light beam emitted by the laser (5) is over against the edge of the product to be detected, the laser (5) is driven by the laser power supply (6), and the laser power supply (6) is controlled by a computer (15) and a laser controller connected with the computer (15) in a communication way;
the beam splitter (8) is positioned between the laser (5) and the product to be detected, the beam splitting surface of the beam splitter (8) and a laser detection beam emitted by the laser (5) form an angle of 44-46 degrees, the laser detection beam emitted by the laser (5) is transmitted by the beam splitter (8) and is divided into a main beam and a sub-beam, the light trap (7) is positioned on one side of the beam splitter (8), the connecting line of the light trap (7) and the beam splitter (8) is vertical to the main beam, and the sub-beam can be absorbed by the light trap (7); the main light beam can irradiate the edge of the product to be detected to be reflected, and the reflected main light beam reaches the third camera (11) after being reflected by the beam splitter (8), the first prism (9), the second prism (10) and the third prism (23) step by step;
the first camera (1), the second camera (4) and the third camera (11) can upload the shot image gray scale information to the computer (15) for analysis, the computer (15) is connected with a PLC, and the computer (15) connected with the PLC can adjust the power of the laser (5) through the laser controller according to the image gray scale information shot by the cameras.
9. A glass defect on-line detecting device according to claim 8, characterized in that the first prism (9) and the second prism (10) are fixed on a fixing frame (12), the third prism (23) and the third camera (11) are fixed on a fixing plate (25), the fixing frame (12) is fixed on a guide rail (13), the guide rail (13) is driven by a stepping motor or a servo motor (14) to move up and down to change the length of the light path in the vertical direction, and the stepping motor or the servo motor (14) is controlled by the computer (15).
10. An on-line glass defect inspection apparatus as claimed in claim 9, wherein the profile of the product to be inspected has to be entered into the software program of the computer (15) in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921594647.6U CN210847221U (en) | 2019-09-24 | 2019-09-24 | Glass defect on-line measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921594647.6U CN210847221U (en) | 2019-09-24 | 2019-09-24 | Glass defect on-line measuring equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114485393A (en) * | 2021-12-30 | 2022-05-13 | 歌尔光学科技有限公司 | Graphic card tool and calibration method |
| CN114485393B (en) * | 2021-12-30 | 2024-03-12 | 歌尔光学科技有限公司 | Picture card tool and calibration method |
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