CN114062378B - Linear follow-up bottleneck crack detection system - Google Patents
Linear follow-up bottleneck crack detection system Download PDFInfo
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Abstract
A straight line follow-up bottleneck crack detection system for the quality detection of glass bottleneck on the production line, including control module, fixed module, reciprocal follow-up module and rotary module, fixed module fixed mounting is in the production line top, and its below sliding connection has reciprocal follow-up module, reciprocal follow-up module below rotates and is connected with rotary module, rotary module includes one or more information acquisition device of circumference setting, follows rotary module's rotation, pattern acquisition device can 360 collection glass bottle bottleneck pattern information, has improved measuring result's accuracy greatly, control module control reciprocal follow-up module and rotary module action, and mechanical automation's detection saves labour and labour cost more, and this device need not the centre gripping bottle moreover, detects the position wide, and the compatibility is extremely strong, and follow-up design has also improved detection efficiency greatly, and the practicality is extremely strong.
Description
Technical Field
The invention relates to the technical field of industrial automatic detection, in particular to a linear follow-up bottleneck crack detection system.
Background
The glass bottle has the characteristics of attractive appearance, high chemical stability, good air tightness, recycling and the like, so that the glass bottle is widely applied to the packaging of products such as medicines, beverages, foods and the like. In the production process of glass bottles, the glass bottles on a production line often have defects such as cracks and gaps, and the glass bottles with the defects seriously affect the transportation and the preservation of products, so that the glass bottles have important practical significance for crack detection.
At present, the inspection method mostly adopts a manual eye test bottle to detect whether the glass bottle has cracks, and has high labor cost, low efficiency and poor stability; the contact bottle inspection method utilizes mechanical clamping inspection, but in the glass bottle industry, the appearance of the bottle body of the product is different, so that the universality of a crack detection structure of the mouth part by clamping the bottle body is poor, the equipment cost is high, and the detection model is fixed; compared with the contact detection, the non-contact detection method has stronger detection compatibility and wider detection range, for example, chinese patent CN201720680207.7 discloses a non-contact bottleneck quality rotating module, a glass bottle to be detected is positioned on a wheel disc, the glass bottle rotates along with the wheel disc, a fixed information acquisition device is arranged above the wheel disc, the bottleneck state is analyzed through a bottleneck pattern picture on an acquisition path, but the device performs pattern acquisition on a moving bottle body, so the acquired image error is larger, and as the device only adopts a sampling device hoisted above the bottleneck path, only pattern information right above the bottleneck can be acquired, cracks around the bottleneck cannot be detected, the practicability is poor, and the device is characterized by the wheel disc detection and larger occupied area. Therefore, a full-automatic bottle opening crack detection system with high compatibility and universality for detecting a round bottle opening is needed.
Disclosure of Invention
In order to solve the problems, the invention provides the linear follow-up bottle opening crack detection system which is higher in compatibility and detection precision and can finish the detection work of the defects of the glass bottle and the rejection work of the glass bottle with the crack on line.
The technical scheme of the invention is as follows:
Most of the existing bottle mouth inspection methods are manual visual inspection and contact inspection, so that the manual cost is high, the efficiency is low, the stability is poor, the equipment cost is high and the detection model is fixed.
The conventional visual detection device is limited by the detection principle and the fixed detection model, so that the compatibility is poor, and the running speed and the detection accuracy are far from the requirements of the current user, but the conventional visual detection device is still used in a large amount due to the lack of substitutes. However, as the demand for detecting cracks of glass bottles is higher and higher, the original mode for detecting cracks and breakage of the bottles with different shapes is not applicable any more. Therefore, the invention aims to seek a novel detection mode to replace the traditional detection equipment, and the compatibility is wider regardless of the shape and the material of the bottle.
Specifically, a straight-line follow-up bottleneck crack detection system for the quality detection of glass bottleneck on the production line, including control module, fixed module, reciprocal follow-up module and rotary module, fixed module fixed mounting is in the production line top, and its below sliding connection has reciprocal follow-up module, reciprocal follow-up module can follow the periodic horizontal reciprocating motion of production line direction of operation, and its below rotation is connected with rotary module, rotary module includes one or more information acquisition device of circumference setting, rotary module can follow vertical axis of rotation to drive information acquisition device and rotate, accomplish bottleneck information acquisition work, control module includes sensor components and parts, comes control reciprocal follow-up module and rotary module action through detecting glass bottle information on the production line, compares in traditional manual visual inspection, and mechanized inspection has greatly reduced inspection error on the one hand, has practiced thrift the cost of labor simultaneously greatly.
The linear follow-up bottleneck crack detection system comprises the guide rail, the sliding block, the moving plate and the first driving device, wherein the guide rail is horizontally arranged below the fixed module, the moving plate is connected with the guide rail in a sliding manner through the sliding block, the moving plate is further connected with the first driving device, and the moving plate can horizontally reciprocate under the driving of the first driving device.
Preferably, the speed of the reciprocating follow-up module when the glass bottle moves in the opposite direction to the glass bottle moving direction on the production line is higher than the speed when the reciprocating follow-up module moves in the same direction to the glass bottle, so that after the device completes the quality detection work of a glass bottle opening, the device can be quickly reset to the upper part of the next glass bottle opening to continue the detection work, the working efficiency is effectively improved, and when the reciprocating follow-up module is the same as the glass bottle moving direction on the production line, the reciprocating follow-up module is also the same as the glass bottle moving speed, the reciprocating follow-up module and the bottle body are ensured to be relatively consistent in the horizontal movement process according to the real-time bottle body position and the conveying speed, the accuracy of device information acquisition is greatly improved, and the detection accuracy is improved.
Further, a space exists between the front glass bottle and the rear glass bottle on the production line, the space is not smaller than the radius of gyration of the rotary module and the distance between the starting point and the end point of the reciprocating motion of the reciprocating follow-up module, and when the detection of the current bottle body is completed, the reciprocating follow-up module is quickly reset to collect and detect the next bottle body, so that the missing phenomenon is avoided.
The linear follow-up bottleneck crack detection system comprises the rotary module, the rotary module comprises the second driving device and the rotary support, the rotary support is vertically arranged and is rotationally connected with the reciprocating follow-up module, the second driving device is arranged at the upper end of the rotary support, and the rotary support can be driven by the second driving device to rotate.
Further, the second driving device comprises a servo motor and a speed reducer, and the transmission shaft part of the servo motor is connected with the rotary support through the speed reducer, so that the structure is more compact, and the arrangement space is greatly saved.
Further, the rotating support comprises a rotating support, a hanging disc and a connecting plate, wherein the rotating support is located at the upper end of the rotating support and is rotationally connected with the reciprocating follow-up module, the hanging disc is arranged below the rotating support, and the rotating support is connected with the hanging disc through the connecting plate.
Further, be equipped with information acquisition device on the connecting plate between adapter plate and the hanging scaffold, information acquisition device includes camera subassembly, and it rotates along with rotary module for gather glass bottle bottleneck pattern information, improved bottleneck quality inspection's accuracy greatly, corresponding, rotary module still includes the light source subassembly, makes can carry out the light filling to the bottleneck when the environment is darker, guarantees bottleneck information acquisition's accuracy.
Preferably, the light source assembly has color, the front of the camera assembly is provided with a light filter with corresponding color to eliminate the interference of external natural light or other light sources, and further preferably, the detection station is also provided with a light shield for shielding external stray light.
Further, the rotary module is further provided with the reflecting mirror assembly, the reflecting mirror assembly is used for reflecting the bottleneck image to the camera assembly, the distance from the light source assembly to the rotary shaft center is reduced by the aid of the reflecting mirror assembly, inertia of the whole system is reduced, detection speed is improved, control precision is improved, and service life of the rotary part is prolonged.
As the preference, camera subassembly and connecting plate rotate to be connected, make people can adjust camera subassembly angle as required, improved the device suitability, as the preference, camera subassembly head is 30-60 with the horizontal direction contained angle, and when the contained angle was too big, the scope that sampling camera can gather reduced, leads to detecting easily and appears the deviation, and when the contained angle was too little, required glass bottle position was higher, and information acquisition is difficult for going on. Preferably, the plane where the rotation axis of the rotating module is moved coincides with the plane where the axis of the glass bottle mouth is moved, so that the accuracy of the quality detection result is effectively improved.
Further, at least one pair of camera assemblies is provided, each pair of camera assemblies is provided with a light source assembly, and preferably, the center of the bottle mouth is perpendicular to the vertical projection of the plane of the light source assembly, is positioned at the outer side of the light source assembly or coincides with the outer edge of one side of the light source assembly, which is close to the glass bottle mouth, when seen from the vertical projection of the glass bottle mouth and the light source assembly, so as to eliminate the interference of the bottle mouth and the stitching line; when the camera component is in a plurality of pairs, a plurality of light source components are staggered relative to the center of the bottle mouth, for example, when the number of the light source components is two, the two light source components are symmetrically arranged relative to the center axis of the bottle mouth. One of the paired camera components is perpendicular to the light source component to form a front light imaging, the front light imaging focuses on micro-cracks on the plane of the bottle mouth, the cracks are transversely distributed on the surface of the bottle mouth, under the light path, the normal area does not reflect light to appear black, the crack area reflects light to form transverse bright spots, the other camera component is parallel to the light source component to form a side light imaging, the side light imaging focuses on micro-cracks on the edge of the bottle mouth, the cracks are longitudinally distributed on the edge of the bottle mouth, under the light path, the normal area does not reflect light to appear black, and the crack area reflects light to form longitudinal bright spots.
The linear follow-up bottleneck crack detection system is further provided with the alarm module and/or the rejection module, is used for finding out the alarm action when the bottleneck with the crack is found out, and can reject the unqualified products from the production line, so that the detection efficiency is effectively improved.
The invention has the beneficial effects that: compared with the traditional manual visual inspection, the mechanical automatic inspection saves more labor force and labor cost, and the device does not need to clamp a bottle body and carries out full Cheng Duiping body non-contact inspection, so that the inspection direction is wide, the special-shaped bottle is compatible, and the crack inspection requirement of all glass bottle openings is almost met; the follow-up design can detect the product line without interfering with the operation of the product line, thereby greatly improving the detection efficiency; moreover, the device is used for 360-degree dead-angle-free detection, the accuracy of a measuring result is greatly improved, each bottle on a production line is subjected to real-time online data acquisition by using an industrial camera, and the device is matched with professional algorithm design, so that mouth cracks of glass bottles can be accurately detected and identified, unqualified bottles are accurately removed, the industrial intelligent lifting belt of a bottle factory can be enabled to be of a new height by using the detection system, the speed of a production site is adapted, the output rate of damaged bottles is greatly reduced, and the overall quality of products is optimized.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application.
In the drawings:
FIG. 1 is a diagram showing the operation state of the detection system according to the embodiment;
FIG. 2 is a schematic diagram of connection of a stationary module, a reciprocating follower module, and a rotary module according to an embodiment;
FIG. 3 is a schematic structural view of a fixing module according to an embodiment;
FIG. 4 is an exploded view of FIG. 3;
FIG. 5 is a schematic diagram of a camera assembly according to an embodiment;
FIG. 6 is a schematic view of the structure of the mirror assembly in an embodiment;
FIG. 7 is a schematic view of a light source assembly according to an embodiment;
FIG. 8 is a schematic diagram of the imaging light path in an embodiment;
FIG. 9 is a front-end photoimaging diagram of an embodiment;
FIG. 10 is a side view of an embodiment;
FIG. 11 is a flowchart of image processing in an embodiment;
FIG. 12 is a flow chart of the operation of the detection system in an embodiment;
the components represented by the reference numerals in the figures are:
1. A fixed module, 11, a fixed plate, 12, a guide groove, 2, a reciprocating follower module, 21, a guide rail, 22, a slider, 23, a moving plate, 3, a rotating module, 31, a servo motor, 32, a speed reducer, 33, a rotating bracket, 34, a camera assembly 341, a sampling camera, 3411, a first sampling camera, 3412, a second sampling camera, 3413, a third sampling camera, 3414, a fourth sampling camera, 342, a first mounting plate, 3421, a first mounting hole, 3422, a first slide groove, 35, a mirror assembly, 351, a second mounting plate, 3511, a second mounting hole, 3512, a second slide groove, 352, a mirror, 3521, a first mirror, 3522, a second mirror, 3523, a third mirror, 3524, a fourth mirror, 36, a light source assembly, 361, a third mounting plate, 3611, a third slide groove, 3612, a fourth slide groove, 362, a light source, 3621, a red light source, 3622, a green light source
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art, and the disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein.
Examples
The embodiment provides a straight line follow-up bottleneck crack detection system for the quality detection of glass bottleneck on the production line, see fig. 1, 2, including control module, fixed module 1, reciprocal follow-up module 2 and rotary module 3, control module includes photoelectric sensor, PLC control unit and control panel (not shown), photoelectric sensor installs on the glass bottle production line, controls this detecting system's operation through detecting glass bottle information on the production line, fixed module 1 fixed mounting is in the production line top, the production line top is equipped with the glass bottle that removes along with the production line, and glass bottle self does not rotate. The fixed module 1 is located glass bottle moving track top, and its below sliding connection has reciprocal follow-up module 2, reciprocal follow-up module 2 can be followed the periodic horizontal reciprocating motion of production line direction of operation, and its below rotation is connected with rotary module 3, rotary module 3 includes the information acquisition device of circumference setting, rotary module 3 can rotate along vertical axis of rotation to drive information acquisition device and rotate, accomplish bottleneck information acquisition work, reciprocal follow-up module 2 and rotary module 3 all are connected with the control panel electricity, compare in traditional manual visual inspection, and the inspection of mechanization has greatly reduced the inspection error on the one hand, has practiced thrift the cost of labor simultaneously greatly.
Preferably, in this embodiment, the detection system is further provided with an alarm module and a rejection module (not shown), where the alarm module and the rejection module are both electrically connected with the control panel, and are used for discovering an alarm action when a bottle mouth with a crack is found, and rejection of an unqualified product from a production line is enabled, so that the detection efficiency is effectively improved.
In this embodiment, referring to fig. 3, the fixing module 1 includes a fixing plate 11, where the fixing plate 11 is a square plate, and the periphery of the fixing plate is provided with a connecting hole and is lifted above the production line by a connecting piece, and the fixing plate 11 is horizontally arranged and is used for bearing the whole set of rotating modules.
In this embodiment, referring to fig. 4, the reciprocating follower module 2 includes guide rails 21, sliding blocks 22 and moving plates 23, the length of the guide rails 21 is the same as the side length of the fixed plate 11, two guide rails 21 are respectively disposed at two sides below the fixed plate 11 and parallel to the moving track of the glass bottle, each guide rail 21 is provided with two sliding blocks 22, the sliding blocks 22 can slide along the guide rails 21, the moving plates 23 are in rectangular structures, two ends of each moving plate 23 are respectively fixedly connected with the sliding blocks 22 on the guide rails 21 at two sides, and the sliding blocks 22 at each end of each moving plate 23 are disposed at two sides of the moving plate 23, so that the lifting of the moving plate 23 is firmer, and the moving plates 23 are horizontally disposed and can slide along the guide rails 21 along with the sliding blocks 22.
Preferably, a first driving device is arranged on one side of the middle part of the moving plate 23, the first driving device is a linear motor, a stator part of the linear motor is installed on the fixed plate 11, a rotor is installed on the moving plate 23, linear motion is realized under the driving of the linear motor, and the requirement of high speed and high response is easy to realize, however, the driving mode of the moving plate 23 can also be realized through structures such as a gear rack, a ball screw and a synchronous belt, and the like, and the embodiment does not limit any limitation, and preferably, the moving plate 23 can reciprocate along the guide rail 21 under the driving of the linear motor, and when the moving direction of the moving plate is the same as that of a glass bottle, the moving speed of the moving plate is the same as that of the glass bottle, the moving plate 23 and the bottle are ensured to be relatively consistent in the horizontal motion process according to the position and the conveying speed of the real-time bottle, so that the accuracy of information acquisition of the device is greatly improved, and the inspection accuracy is improved.
Preferably, the speed of the moving plate 23 when the moving direction of the glass bottle is opposite to the moving direction of the glass bottle on the production line is greater than the speed when the moving direction of the glass bottle is the same, so that after the device completes the quality detection work of the previous glass bottle opening, the device can be quickly reset to the upper part of the next glass bottle opening, and the detection work is continued, thereby effectively improving the working efficiency.
In this embodiment, in conjunction with fig. 4, the rotation module 3 includes a servo motor 31, a speed reducer 32 and a rotation support 33, the middle of the fixed plate 11 is provided with a guide slot 12 along the direction of the guide rail 21, the middle of the movable plate 23 is provided with a circular through hole, the servo motor 31 is arranged to pass through the guide slot 12 from top to bottom, the lower end of the servo motor is connected with the speed reducer 32, the speed reducer 32 is located between the movable plate 23 and the fixed plate 11, the height of the speed reducer is smaller than the distance between the movable plate 23 and the fixed plate 11, an output shaft of the speed reducer 32 passes through the through hole in the middle of the movable plate 23 and is connected with the rotation support 33, when the movable plate 23 reciprocates, the servo motor 31 moves in the guide slot 12 along with the speed reducer, the rotation support 33 can rotate under the driving of the servo motor 31, as a preferential mode, the rotation support 33 is vertically arranged, the rotation axis of the rotation support is collinear with the axis of a bottleneck, so that the bottleneck pattern information is collected conveniently, the structure of the servo motor 31 and the speed reducer 32 is directly connected, the arrangement space is greatly saved, the use of the linear motor and the servo motor 31 is realized, the position, the speed and the torque control, the high-closed loop performance, the high-loop speed and the rapid and rapid overload and rapid and overload motion are realized in a dynamic response process.
Further, the rotating bracket 33 comprises a rotating disc, a hanging disc and a connecting plate, the rotating disc and the hanging disc are of a ╋ -shaped structure, the middle part of the upper end of the rotating disc is connected with the output shaft of the speed reducer 32, the hanging disc is located below the rotating disc, a square opening is arranged at the middle part of the rotating disc, the rotating disc and the hanging disc are horizontally and vertically arranged in a mirror image mode, connecting plates are vertically arranged between the rotating disc and the four extending parts of the hanging disc, the connecting plates are rectangular plates, eight connecting plates are arranged and are respectively located on two sides of the four extending parts of the rotating disc and the hanging disc, and the connecting plates are made of aluminum and are preferably used for realizing light weight and inertia minimization of the whole rotating module.
Preferably, the distance between the lower end of the rotating bracket 33 and the bottle mouth of the glass bottle is greater than zero, so that when the rotating module 3 retreats to the initial position along with the moving plate 23, the rotating bracket 33 does not influence the movement of the glass bottle, and the bottle body or the bottle mouth is damaged.
Further, the rotating support 33 is further provided with an information acquisition device, the information acquisition device is a camera assembly 34, the head of the camera assembly 34 faces the rotating axis direction of the rotating support 33, the camera assembly is rotationally connected between the connecting plates on two sides of the extending part of the switching disc and the hanging scaffold, and can rotate along with the rotating module 3, so that information is acquired, and accuracy of bottle mouth quality inspection is greatly improved.
Further, referring to fig. 5, the camera assembly 34 includes sampling cameras 341, the sampling cameras 341 are provided with four sampling cameras, which are uniformly distributed along the circumference of the rotating support 33, and are respectively a first sampling camera 3411, a second sampling camera 3412, a third sampling camera 3413 and a fourth sampling camera 3414, the sampling cameras 341 rotate along with the rotating support 33, so that the bottleneck sampling information is ensured to be 360 ° dead angle-free, the sampling precision is greatly improved, and preferably, the included angle between the nose part of the sampling camera 341 and the horizontal direction is 50 °, when the included angle is too large, the collectable range of the sampling cameras 341 is reduced, the detection deviation is easy to occur, and when the included angle is too small, the required glass bottle position is higher, and the information collection is not easy to perform.
As a preferred mode, the camera assembly 34 further includes a first mounting plate 342, the camera assembly 34 is connected with the rotating bracket 33 through the first mounting plate 342, the first mounting plate 342 is of a "U" structure and has a downward opening, one ends of the two side plates are provided with first mounting holes 3421, the sampling camera 341 is fixedly connected with the first mounting plate 342 through the first mounting holes 3421, as a preferred mode, the other ends of the two side plates are provided with first sliding grooves 3422, the first sliding grooves 3422 are of an arc structure, the center of the arc coincides with the axis of the first mounting holes 3421, and the inside of the first sliding grooves is movably connected with the rotating bracket 33 through a connecting piece, so that people can perform angle adjustment according to needs.
In this embodiment, the rotation module 3 further includes a light source assembly 36, the light source assembly 36 is located below the rotation bracket 33, see fig. 6, and includes a light source 362 and a third mounting plate 361 for increasing sampling brightness, the third mounting plate 361 is of a "7" structure, two third sliding grooves 3611 are disposed at two ends of the upper transverse plate, a connecting piece is disposed in the third sliding groove 3611 and slidably connects the third mounting plate 361 with the rotation bracket 33 through the connecting piece, so that the light source assembly 36 is disposed toward the rotation axis direction of the rotation bracket 33, and the distance between the light source assembly 36 and the rotation axis of the rotation bracket 33 can be adjusted through the third sliding groove 3611, four fourth sliding grooves 3612 are disposed at four corners of a riser of the third mounting plate 361, the fourth sliding grooves 3612 are vertically disposed, the light source 362 is slidably connected with the fourth sliding grooves 3612 through the connecting piece, and the height of the light source 362 can be adjusted through the fourth sliding grooves 3612.
Further, in this embodiment, the light source assembly 36 includes two light sources 362, the two light sources 362 are disposed opposite to each other, and the detection portion is provided with two image light paths, each of which includes two sampling cameras 341 and one light source 362. Wherein, adjacent first sampling camera 3411, second sampling camera 3412, and light sources located at opposite sides of second sampling camera 3412 form a group, and adjacent third sampling camera 3413, fourth sampling camera 3414 form a group for light sources located at opposite sides of fourth sampling camera 3414. The rotation angle of the rotation module 3 can be reduced by two sets of imaging light paths, the two light paths adopted in the embodiment only need to integrally rotate 180 degrees to cover 360 degrees, the stations can be not interfered with each other by matching the light sources 362 with the optical filters of the sampling cameras 341, the two light source assemblies 36 are arranged in an axisymmetric manner relative to the center of the bottle mouth to eliminate the interference of the bottle mouth and the suture, and meanwhile, in the rotation process of the rotation module 3, the sampling cameras 341 collect a certain number of images according to the set frame rate.
Preferably, the two light sources 362 adopt a red light source 3621 and a green light source 3622, the light sources 362 with different colors and the optical filters of the sampling camera 341 can realize no interference between stations, when a group of imaging light paths are set, the colors of the light sources 362 are not required, the center of the bottle mouth is perpendicular to the plane of the light source assembly 36 from the vertical projection of the glass bottle mouth and the light source assembly 36, and the light sources can also be positioned outside the light source assembly 36, and further preferably, a light shield (not shown) is also arranged at the detection station for shielding external stray light.
Further, referring to fig. 8, as seen from the vertical projection of the glass bottle mouth and the light source assembly 36, the center of the bottle mouth is perpendicular to the plane where the red light source 3621 and the green light source 3622 are located, and coincides with the outer edge of the plane where the light source assembly 36 is located near the glass bottle mouth, so as to prevent the light source 362 from lighting the seam line on the glass bottle and forming false detection, meanwhile, the perpendicular to the plane where the bottle mouth center and the light source assembly 36 are located is located at the outer side of the light source assembly 36, the smaller the area of the bottle mouth where the light source is lit, i.e. the smaller the detectable area of the sampling camera 341 collected under a single frame, the more times of collection are needed in the rotation process to realize 360 ° blind zone-free detection, so that the best embodiment coincides with the perpendicular to the plane where the red light source 3621 and the green light source 3622 are located, and coincides with the outer edge of the light source assembly 36 near the glass bottle mouth.
Further, the imaging light path further includes a mirror assembly 35, preferably, the mirror assembly 35 is located below the camera assembly 34, and the light source assembly 36 is located below the mirror assembly 35, so that the pattern sampling is more accurate, of course, the positions of the camera assembly 34 and the mirror assembly 35 can be modified according to the use requirement, so that the mirror assembly 35 can reflect the bottleneck information to the camera assembly 34, and the position of the camera assembly 34 and the mirror assembly 35 are not limited in this embodiment.
Further, referring to fig. 6, the mirror assembly 35 is provided with four mirror assemblies 352 and a second mounting plate 351, the mirror assemblies are located at the periphery of the rotating support 33 and are arranged at the same height, and are used for reflecting the bottleneck images to the camera assembly 34, the mirror assembly comprises a mirror 352 and the second mounting plate 351, the two sides of the second mounting plate 351 are provided with connecting plates in a backward extending mode, the upper ends of the connecting plates are provided with second mounting holes 3511, second sliding grooves 3512 are arranged below the second mounting holes 3511, the second sliding grooves 3512 are of arc structures, the circle centers of the arcs coincide with the axes of the second mounting holes 3511, the mirror 352 is fixedly connected with the second mounting plate 351, the second mounting plate 351 is rotatably connected with the rotating support 33 through the second mounting holes 3511, and a connecting piece is arranged through the second sliding grooves 3512, so that the mirror assembly 35 can be subjected to angle adjustment according to needs, the practicality of the device is greatly improved, the distance between the light source assembly 36 and the rotating axis is reduced, the detection speed is improved, the mirror assembly can be selected according to the actual needs, and any embodiment is not limited.
Further, the mirror assembly 35 includes a first mirror 3521, a second mirror 3522, a third mirror 3523, and a fourth mirror 3524, the first mirror 3521, the second mirror 3522, the third mirror 3523, and the fourth mirror 3524 are respectively positioned below the first sampling camera 3411, the second sampling camera 3412, the third sampling camera 3413, and the fourth sampling camera 3414, the red light source 3621 is positioned below the second mirror 3522, and the green light source 3622 is positioned below the fourth mirror 3524.
The first sampling camera 3411, the second sampling camera 3412, the third reflecting mirror 3523, the fourth reflecting mirror 3524 and the green light source 3622 in this embodiment are a set of light paths, the third reflecting mirror 3523 and the fourth reflecting mirror 3524 are respectively used for reflecting bottleneck image information to the first sampling camera 3411 and the second sampling camera 3412, the third sampling camera 3413, the fourth sampling camera 3414, the first reflecting mirror 3521, the second reflecting mirror 3522 and the red light source 3621 are another set of light paths, the first reflecting mirror 3521 and the second reflecting mirror 3522 are respectively used for reflecting bottleneck image information to the third sampling camera 3413 and the fourth sampling camera 3414, the second sampling camera 3412 and the fourth sampling camera 3414 are perpendicular to the two light sources 362, so as to form a front bright field image, and the first sampling camera 3411 and the third sampling camera 3413 are parallel to the light sources 362, so as to form a side light dark field image.
The detection principle of the detection light path is described below with reference to two sets of light path imaging diagrams in fig. 9 and 10, fig. 9 is an imaging diagram of the second sampling camera 3412 or the fourth sampling camera 3414, the imaging mode focuses on micro-cracks on the bottle mouth plane, the cracks are transversely distributed on the bottle mouth surface, under the light path, no reflection of light occurs in a normal area, the cracks reflect light to form transverse bright spots, fig. 10 is an imaging diagram of the first sampling camera 3411 or the third sampling camera 3413, the imaging mode focuses on micro-cracks on the bottle mouth edge, the cracks are longitudinally distributed on the bottle mouth inner edge, under the light path, no reflection occurs in a normal area, and the cracks reflect light to form longitudinal bright spots.
In this embodiment, the junction of runing rest 33 and first mounting panel 342, second mounting panel 351 is the sliding tray structure, first mounting panel 342, second mounting panel 351 and runing rest 33 sliding connection makes people adjust the interval between camera subassembly 34, reflector subassembly 35 and the runing rest 33 axis of rotation according to the user demand, has improved device practicality and suitability greatly.
In this embodiment, referring to fig. 12, the detection system workflow is: bottles on a production line are conveyed according to fixed intervals, when a photoelectric sensor detects that glass bottles enter a monitoring range, the detection system sends information to a PLC control unit, the PLC control unit controls a follow-up rotating system and an image acquisition system to start to operate, the follow-up rotating system comprises a reciprocating follow-up module 2 and a rotating module 3, the image acquisition system is a camera component 34 on the rotating module 3, the camera component 34 transmits acquired graphic information to an image processing system, the image processing system converts graphic signals into electric signals through an image processing algorithm and transmits the electric signals to a control system, a user can also check the detection information according to a man-machine interaction system, and the control system controls a rejecting system to act according to bottleneck quality information transmitted by the image processing system to finish rejecting work of defective products.
In this embodiment, referring to fig. 11, the image processing flow of the rotation module 3 is: the photoelectric sensor detects a glass bottle signal on the production line and transmits the signal to the camera component 34, the camera component 34 controls the light source component 36 to flash and take a picture, the collected picture is transmitted to the image processor after the picture is taken, the image processor transmits image information to the PLC control unit, bottleneck quality information is generated under the action of the encoder, the information is fed back to the interface processor, and workers can know related information through the touch screen. In addition, the PLC control unit can also control actions of the alarm module and the rejection module according to the received bottleneck quality information, specifically, when the bottleneck is found to be defective, the alarm lamp is started, and the rejection device is controlled to work to reject the defective glass bottle.
The present invention is not limited to the above-mentioned embodiments, and any changes or modifications within the scope of the present invention will be apparent to those skilled in the art. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a straight line follow-up bottleneck crack detection system for the quality detection of glass bottleneck on the production line, its characterized in that includes control module, fixed module (1), reciprocal follow-up module (2) and rotary module (3), fixed module (1) fixed mounting is in the production line top, and its below sliding connection has reciprocal follow-up module (2), reciprocal follow-up module (2) can follow the periodic horizontal reciprocating motion of production line direction of operation, and its below rotation is connected with rotary module (3), rotary module (3) include one or more information acquisition device of circumference setting, rotary module (3) can rotate along vertical axis of rotation to drive information acquisition device and rotate, accomplish bottleneck information acquisition work, control module control reciprocal follow-up module (2) and rotary module (3) action;
The reciprocating follow-up module (2) comprises guide rails (21), sliding blocks (22) and moving plates (23), the length of the guide rails (21) is the same as the side length of the fixed plates (11), two guide rails (21) are arranged in parallel on two sides below the fixed plates (11), the arrangement direction of the guide rails (21) is parallel to the moving track of the glass bottle, each guide rail (21) is provided with two sliding blocks (22), the sliding blocks (22) can slide along the guide rails (21), the moving plates (23) are of rectangular structures, two ends of each sliding block are fixedly connected with the sliding blocks (22) on the guide rails (21) on two sides respectively, the sliding blocks (22) at each end of each moving plate (23) are located on two sides of the moving plates (23), and the moving plates (23) are horizontally arranged and can slide along the guide rails (21) along with the sliding blocks (22);
The rotary module (3) comprises a servo motor (31), a speed reducer (32) and a rotary support (33), wherein the middle part of the fixed plate (11) is provided with a guide groove (12) along the direction of a guide rail (21), the middle part of the movable plate (23) is provided with a circular through hole, the servo motor (31) passes through the guide groove (12) from top to bottom and is connected with the speed reducer (32) at the lower end, the speed reducer (32) is positioned between the movable plate (23) and the fixed plate (11), the height of the speed reducer is smaller than the distance between the movable plate (23) and the fixed plate (11), an output shaft of the speed reducer (32) passes through the through hole in the middle part of the movable plate (23) and is connected with the rotary support (33), when the movable plate (23) reciprocates, the servo motor (31) moves in the guide groove (12), and the rotary support (33) can rotate under the driving of the servo motor (31).
The rotary support (33) comprises a transfer disc, a hanging disc and a connecting plate, wherein the transfer disc and the hanging disc are of a ╋ -shaped structure, the middle part of the upper end of the transfer disc is connected with an output shaft of the speed reducer (32), the hanging disc is positioned below the transfer disc, a square opening is arranged at the middle part of the transfer disc, the transfer disc and the hanging disc are horizontally and vertically arranged in a mirror image manner, the connecting plate is vertically arranged between the four extension parts of the transfer disc and the hanging disc, and the connecting plate is a rectangular plate which is eight in number and is respectively positioned at two sides of the four extension parts of the transfer disc and the hanging disc;
the information acquisition device is located on a connecting plate between the switching plate and the hanging scaffold, and comprises a camera assembly (34), and the camera assembly (34) is rotationally connected with the connecting plate.
2. The linear follow-up bottleneck crack detection system as claimed in claim 1, wherein the reciprocating follow-up module (2) further comprises a first driving device, the guide rail (21) is horizontally arranged below the fixed module (1), the moving plate (23) is connected with the first driving device, and the moving plate (23) can horizontally reciprocate under the drive of the first driving device.
3. The linear follow-up bottle opening crack detection system according to claim 2, wherein the radius of gyration of the rotary module (3) is smaller than the distance between the front glass bottle and the rear glass bottle on the production line, and the distance between the starting point and the finishing point of the reciprocating motion of the reciprocating follow-up module (2) is smaller than the distance between the front glass bottle and the rear glass bottle on the production line.
4. The linear follow-up bottleneck crack detection system as set forth in claim 1, wherein the rotary module (3) further comprises a light source assembly (36), the camera assemblies (34) are provided with at least one pair, one camera assembly (34) is perpendicular to the light source assembly (36), and the other camera assembly (34) is parallel to the light source assembly (36).
5. A linear follower bottleneck crack detection system according to claim 4, wherein the rotation module (3) further comprises a mirror assembly (35), the mirror assembly (35) being capable of reflecting a bottleneck image to a camera assembly (34).
6. The linear follower bottleneck crack detection system of claim 5, wherein the center of the bottleneck is perpendicular to the plane of the light source assembly (36) as seen in a vertical projection of the glass bottleneck and the light source assembly (36), is located outside the light source assembly (36), or is coincident with the outer edge of the light source assembly (36) on the side adjacent the glass bottleneck.
7. A straight line type follow-up bottle mouth crack detection system according to any one of claims 1-6, characterized in that the detection system is further provided with an alarm module and/or a rejection module.
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| US6275287B1 (en) * | 1998-04-25 | 2001-08-14 | Nihon Yamamura Glass Co., Ltd. | Check detector for glass bottle neck and finish portion |
| CN102072907A (en) * | 2009-11-19 | 2011-05-25 | 住友电装株式会社 | Appearance examining device for cylindrical crimp terminal |
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