CN114062378A - Linear follow-up bottle opening crack detection system - Google Patents
Linear follow-up bottle opening crack detection system Download PDFInfo
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Abstract
A linear follow-up bottle mouth crack detection system is used for quality detection of glass bottle mouths on a production line and comprises a control module, a fixed module, a reciprocating follow-up module and a rotating module, wherein the fixed module is fixedly arranged above the production line, the reciprocating follow-up module is connected below the fixed module in a sliding manner, the rotating module is connected below the reciprocating follow-up module in a rotating manner, the rotating module comprises one or more information acquisition devices which are circumferentially arranged, the pattern acquisition devices can acquire pattern information of glass bottle mouths at 360 degrees along with the rotation of the rotating module, the accuracy of measurement results is greatly improved, the control module controls the reciprocating follow-up module and the rotating module to act, the mechanical automatic detection saves labor and labor cost, the device does not need to clamp a bottle body, has wide detection direction, extremely high compatibility and follow-up design, and greatly improves the detection efficiency, the practicability is extremely strong.
Description
Technical Field
The invention relates to the technical field of industrial automatic detection, in particular to a linear follow-up bottle opening crack detection system.
Background
The glass bottle has the characteristics of attractive appearance, high chemical stability, good air tightness, recyclability and the like, so 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 the production line often have defects such as cracks and gaps, and the glass bottles with the defects seriously affect the conveying and the storage of products, so that the method has important practical significance for crack detection of the glass bottles.
At present, the inspection method mostly adopts a manual eye test bottle to detect whether the glass bottle has cracks or not, and has high labor cost, low efficiency and poor stability; the contact type bottle inspection method utilizes mechanical clamping for inspection, but in the glass bottle industry, the appearance of the bottle body of a product is different, so that the universality of the mouth crack detection structure depending on the clamped bottle body is poorer, the equipment cost is high, and the detection model is fixed; for example, chinese patent CN201720680207.7 discloses a non-contact bottleneck quality rotation module, a glass bottle to be detected is located on a wheel disc, and the glass bottle rotates along with the wheel disc, a fixed information acquisition device is arranged above the wheel disc, and bottleneck states are analyzed by acquiring bottleneck pattern pictures on a path, but the device performs pattern acquisition on moving bottles, so that acquired image errors are large, and because the device only adopts a sampling device hung above the bottleneck path, only pattern information right above the bottleneck can be acquired, cracks around the bottleneck cannot be detected, resulting in poor practicability, and because the device is used for wheel disc detection, the occupied area is larger. Therefore, a fully-automatic bottle opening crack detection system with high detection compatibility and universality for a circular bottle opening is needed urgently.
Disclosure of Invention
In order to solve the problems, the invention provides a linear follow-up bottle mouth crack detection system which is stronger in compatibility and higher in detection precision and can complete the detection work of the defects of glass bottles and the elimination work of glass bottles with cracks 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 labor cost is high, the efficiency is low, the stability is poor, the equipment cost is high, and a detection model is fixed.
The conventional visual inspection apparatus is limited by the detection principle and the fixed detection model, resulting in poor compatibility, so that the operation speed and the detection accuracy are far from the requirements of the current users, but the conventional visual inspection apparatus still has a large number of applications due to the lack of substitutes. However, as the demand for detecting cracks of glass bottles is higher and higher, the original modes for detecting cracks and damages of bottles with different bottle body shapes are not suitable any more. Therefore, the invention aims to find 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, the linear follow-up bottleneck crack detection system is used for quality detection of glass bottlenecks on a production line and comprises a control module, a fixed module, a reciprocating follow-up module and a rotating module, wherein the fixed module is fixedly arranged above the production line, the reciprocating follow-up module is connected below the fixed module in a sliding manner, the reciprocating follow-up module can periodically and horizontally reciprocate along the running direction of the production line, the rotating module is rotatably connected below the reciprocating follow-up module and comprises one or more information acquisition devices which are circumferentially arranged, the rotating module can rotate along a vertical rotating axis and drive the information acquisition devices to rotate so as to complete bottleneck information acquisition work, the control module comprises a sensor component, the reciprocating follow-up module and the rotating module are controlled to move by detecting information of glass bottles on the production line, and compared with the traditional manual visual inspection, on one hand, the mechanical inspection greatly reduces inspection errors and greatly saves labor cost.
According to the linear follow-up bottle mouth crack detection system, the reciprocating follow-up module comprises a guide rail, a sliding block, a moving plate and a first driving device, the guide rail is located below the fixed module and is arranged horizontally, the moving plate is connected with the guide rail in a sliding mode through the sliding block, the moving plate is further connected with the first driving device, and the moving plate can move horizontally in a reciprocating mode under the driving of the first driving device.
Preferably, the speed of the reciprocating follow-up module when the moving direction of the glass bottles is opposite to that of the glass bottles on the production line is higher than the speed of the reciprocating follow-up module when the moving direction of the glass bottles is the same as that of the glass bottles, so that the device can be quickly reset to the position above the next glass bottle mouth after the quality detection of the glass bottle mouth is completed, the detection is continuously carried out, the working efficiency is effectively improved, the moving direction of the reciprocating follow-up module when the reciprocating follow-up module is the same as that of the glass bottles on the production line is also the same as that of the glass bottles, the reciprocating follow-up module and the bottle bodies 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 information acquisition of the device is greatly improved, and the detection precision is improved.
Further, there is the interval between two front and back glass bottles on the production line, and the interval is not less than the radius of gyration of rotation module and the distance of reciprocal follow-up module reciprocating motion starting point and terminal point, and when the detection of the square bottle was accomplished, reciprocal follow-up module resets rapidly and carries out the collection of next bottle and detect, guarantees not to take place to omit the phenomenon.
According to the linear follow-up bottle mouth crack detection system, the rotary module comprises the second driving device and the rotary support, the rotary support is vertically arranged and is rotatably 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.
Furthermore, 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 rotating support through the speed reducer, so that the structure is more compact, and the arrangement space is greatly saved.
Furthermore, the rotating support comprises a switching disc, a hanging disc and a connecting plate, the switching disc is located at the upper end of the rotating support and is rotatably connected with the reciprocating follow-up module, the hanging disc is arranged below the switching disc, and the switching disc is connected with the hanging disc through the connecting plate.
Further, be equipped with information acquisition device on the connecting plate between switching dish and the hanging dish, information acquisition device includes the camera subassembly, and it rotates along with rotary module for gather glass bottle bottleneck pattern information, improved the accuracy of bottleneck quality inspection greatly, it is corresponding, rotary module still includes the light source subassembly, makes and 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 colors, the front of the camera assembly is provided with a filter with corresponding colors, interference of external natural light or other light sources is eliminated, and as further preferred, a light shield is further installed at the detection station and used for shielding external stray light.
Further, still be equipped with reflector assembly on the rotatory module, reflector assembly is used for reflecting bottleneck image to camera subassembly, and reflector assembly's setting has reduced the distance of light source subassembly apart from rotatory axle center, has reduced entire system's inertia, has promoted detection speed, has improved control accuracy, has prolonged rotary part's life.
Preferably, the camera assembly is rotatably connected with the connecting plate, so that the angle of the camera assembly can be adjusted by people according to needs, the applicability of the device is improved, the included angle between the head of the camera assembly and the horizontal direction is 30-60 degrees, when the included angle is too large, the collectable range of the sampling camera is reduced, the detection deviation is easily caused, when the included angle is too small, the position of a required glass bottle is higher, and the information collection is not easy to carry out. Preferably, the plane of the rotation axis of the rotation module is overlapped with the plane of the rotation axis of the glass bottle mouth when the rotation axis moves, so that the accuracy of the quality detection result is effectively improved.
Furthermore, at least one pair of camera assemblies is arranged, each pair of camera assemblies is provided with a light source assembly, preferably, the center of the bottle opening is sufficiently perpendicular to the vertical line of the plane where the light source assembly is located when seen from the vertical projection of the glass bottle opening and the light source assemblies, and is positioned outside the light source assemblies or is superposed with the outer edge of one side, close to the glass bottle opening, of the light source assemblies so as to eliminate the interference of the bottle opening and a suture line; when the camera assemblies are in multiple pairs, the light source assemblies are staggered relative to the center of the bottle opening, for example, when the light source assemblies are two, the two light source assemblies are symmetrically arranged relative to the central axis of the bottle opening. One of the paired camera components is vertical to the light source component to form a front light imaging, the front light imaging focuses on tiny cracks on the plane of the bottle opening, the cracks are transversely distributed on the surface of the bottle opening, the normal area does not reflect light and presents 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 tiny cracks on the edge of the bottle opening, the cracks are longitudinally distributed on the inner side edge of the bottle opening, the normal area does not reflect light and presents black, and the crack area reflects light to form longitudinal bright spots.
According to the linear follow-up bottle mouth crack detection system, the detection system is further provided with the alarm module and/or the rejection module, the alarm module and/or the rejection module are used for finding out alarm action when a bottle mouth with cracks exists, unqualified products can be rejected from a production line, and the detection efficiency is effectively improved.
The invention has the beneficial effects that: the invention is a linear follow-up bottleneck crack detection system, compare and examine manually traditionally, the detection of the mechanical automation saves labour force and labour cost more, and this apparatus does not need to grip the bottle, the whole course does not have contact-type detection to the bottle, therefore detect the position extensively, compatible special-shaped bottle, almost meet all glass bottleneck crack detection demands; the follow-up design can be used for detecting under the condition of not interfering the operation of the production line, so that the detection efficiency is greatly improved; and this device is 360 no dead angles and detects, the accuracy of measuring result has been improved greatly, utilize the industry camera to carry out real-time online data acquisition to each bottle on the production line, cooperation professional algorithm design, can accomplish accurate detection and discernment to the mouth crack of glass bottle itself, and accurate rejection is carried out to the unqualified bottle to the accuracy, this detecting system's use-in can make the intelligent promotion of industry of bottle factory take a new height, the speed of production field has been adapted to, very big reduction the output rate of damage bottle, optimize the whole quality of product.
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 invention.
In the drawings:
FIG. 1 is a diagram illustrating the operation of the detection system in the exemplary embodiment;
FIG. 2 is a schematic connection diagram of the fixed module, the reciprocating follower module and the rotary module in the embodiment;
FIG. 3 is a schematic structural diagram of a fixing module in the embodiment;
FIG. 4 is an exploded view of FIG. 3;
FIG. 5 is a schematic structural diagram of a camera module according to an embodiment;
FIG. 6 is a schematic structural diagram of a mirror assembly in an embodiment;
FIG. 7 is a schematic view of a light source module according to an embodiment;
FIG. 8 is a schematic diagram showing the composition of an imaging optical path in the embodiment;
FIG. 9 is a front light imaging diagram according to an embodiment;
FIG. 10 is a side light imaging diagram in an embodiment;
FIG. 11 is a flowchart of image processing in an embodiment;
FIG. 12 is a flowchart showing the operation of the detection system in the 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 follow-up module, 21, a guide rail, 22, a slide block, 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, the light source module comprises a first mounting hole, 3422, a first sliding groove, 35, a reflector component, 351, a second mounting plate, 3511, a second mounting hole, 3512, a second sliding groove, 352, a reflector, 3521, a first reflector, 3522, a second reflector, 3523, a third reflector, 3524, a fourth reflector, 36, a light source component, 361, a third mounting plate, 3611, a third sliding groove, 3612, a fourth sliding groove, 362, a light source, 3621, a red light source, 3622 and 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 can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
Examples
The embodiment provides a linear follow-up bottleneck crack detection system, which is used for quality detection of glass bottlenecks in a production line, and is characterized by comprising a control module, a fixed module 1, a reciprocating follow-up module 2 and a rotating module 3, wherein the control module comprises a photoelectric sensor, a PLC (programmable logic controller) control unit and a control panel (not shown), the photoelectric sensor is installed on the glass bottle production line, the operation of the detection system is controlled by detecting information of the glass bottles in the production line, the fixed module 1 is fixedly installed above the production line, the glass bottles moving along with the production line are arranged above the production line, and the glass bottles do not rotate. Fixed module 1 is located glass bottle moving trajectory top, and its below sliding connection has reciprocal follow-up module 2, the periodic horizontal reciprocating motion of production line traffic direction can be followed to reciprocal follow-up module 2, and its below is rotated and is connected with rotation module 3, rotation module 3 includes the information acquisition device that circumference set up, rotation module 3 can be followed vertical axis of rotation and rotated to drive information acquisition device and rotate, accomplish bottleneck information acquisition work, reciprocal follow-up module 2 and rotation module 3 all are connected with the control panel electricity, compare in traditional artifical visual inspection, mechanized inspection 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), and the alarm module and the rejection module are both electrically connected to the control panel, and are used for finding an alarm action when a bottle mouth with a crack is detected, and a production line can be rejected for unqualified products, so that the detection efficiency is effectively improved.
In this embodiment, referring to fig. 3, the fixed module 1 includes a fixed plate 11, the fixed plate 11 is a square plate, the periphery of the fixed plate is provided with connecting holes and is hoisted above the production line through connecting pieces, and the fixed plate 11 is horizontally arranged and used for bearing a whole set of rotating modules.
In this embodiment, referring to fig. 4, the reciprocating follower module 2 includes guide rails 21, sliders 22 and a moving plate 23, the length of each guide rail 21 is equal to the side length of the fixed plate 11, two guide rails 21 are provided and are respectively located on two sides of the lower portion of the fixed plate 11 and are arranged in parallel, the arrangement direction of the guide rails 21 is parallel to the moving track of the glass bottles, two sliders 22 are provided on each guide rail 21, the sliders 22 can slide along the guide rails 21, the moving plate 23 is of a rectangular structure, two ends of the moving plate 23 are respectively fixedly connected with the sliders 22 on the guide rails 21 on two sides, and the sliders 22 at each end of the moving plate 23 are located on two sides of the moving plate 23, so that the moving plate 23 is hoisted more firmly, and the moving plate 23 is arranged horizontally and can slide along the guide rails 21 along with the sliders 22.
Preferably, one side of the middle portion of the moving plate 23 is provided with a first driving device, the first driving device is a linear motor, a stator portion of the linear motor is installed on the fixed plate 11, a mover is installed on the moving plate 23, the linear motion is realized under the driving of the linear motor, the requirement of high speed and high response is easy to realize, of course, the driving mode of the moving plate 23 can also be realized by the structures of a gear rack, a ball screw, a synchronous belt and the like, the embodiment is not limited at all, as preferred, the moving plate 23 can reciprocate along the guide rail 21 under the driving of the linear motor, and has the same moving direction and the same moving speed as the glass bottles, according to the real-time bottle position and the conveying speed, the movable plate 23 is ensured to be relatively consistent with the bottle in the horizontal movement process, the accuracy of information acquisition of the device is greatly improved, and the inspection precision is improved.
Preferably, the speed of the moving plate 23 opposite to the moving direction of the glass bottles on the production line is higher than the speed of the moving plate same as the moving direction of the glass bottles, so that the device can be quickly reset to the position above the next glass bottle mouth after the quality detection of the previous glass bottle mouth is finished, the detection is continuously carried out, the working efficiency is effectively improved, and meanwhile, the distance between the front glass bottle and the rear glass bottle on the production line is not less than the distance between the starting point and the ending point of the reciprocating motion of the moving plate 23, so that the omission phenomenon is avoided.
In this embodiment, referring to fig. 4, the rotating module 3 includes a servo motor 31, a speed reducer 32 and a rotating bracket 33, the middle of the fixed plate 11 is provided with a guide groove 12 along the direction of the guide rail 21, the middle of the moving plate 23 is provided with a circular through hole, the servo motor 31 passes through the guide groove 12 from top to bottom, the lower end of the servo motor 31 is connected with the speed reducer 32, the speed reducer 32 is located between the moving plate 23 and the fixed plate 11, the height of the speed reducer 32 is smaller than the distance between the moving 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 moving plate 23 and is connected with the rotating bracket 33, when the moving plate 23 performs reciprocating movement, the servo motor 31 moves in the guide groove 12 along with the servo motor 31, the rotating bracket 33 can rotate under the driving of the servo motor 31, and as preferable, the rotating bracket 33 is vertically arranged, and the rotation axis thereof is collinear with the axis of the bottle mouth, so as to facilitate the acquisition of the bottle mouth pattern information, the structure that servo motor 31 and speed reducer 32 directly link makes the structure compacter, has saved arrangement space greatly, and the use of above-mentioned linear electric motor and servo motor 31 has realized the closed loop control of position, speed and moment, and high-speed performance is good, and anti overload capacity is strong, and the dynamic response time of motor acceleration and deceleration is short, agrees with this system reciprocating motion and positive and negative rotatory in-process instantaneous load fluctuation and the scene of quick start stop.
Further, the runing rest 33 includes the switching dish, hangs and connects dish and connecting plate, switching dish and hang and connect the dish and be "╋" font structure, switching dish upper end middle part and speed reducer 32 output shaft, hang and connect the dish and be located switching dish below, its middle part is equipped with square opening, switching dish and hanging the equal level of dish and be the mirror image arrangement from top to bottom, vertically be equipped with the connecting plate between four extension positions of switching dish and hanging the dish, the connecting plate is rectangular plate, and its total eight just is located the both sides of four extension positions of switching dish, hanging the dish respectively, as preferred, the connecting plate is the aluminium system material, realizes lightweight, the inertia minimizing of whole rotating module.
Preferably, the distance between the lower end of the rotating bracket 33 and the mouth of the glass bottle is greater than zero, so that when the rotating module 3 retracts 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 mouth of the glass bottle is not damaged.
Further, still be equipped with information acquisition device on the runing rest 33, information acquisition device is camera subassembly 34, camera subassembly 34 head is towards runing rest 33 axis of rotation direction, and it rotates to be connected between the connecting plate of switching dish, hanging connection dish extension position both sides, and can follow rotation module 3 and rotate for information acquisition has improved the accuracy of bottleneck quality inspection greatly.
Further, referring to fig. 5, the camera assembly 34 includes four sampling cameras 341, the four sampling cameras 341 are uniformly distributed along the circumferential direction of the rotating bracket 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 bracket 33, so that sampling at the bottle mouth is guaranteed to be performed at 360 degrees without dead angle, the sampling precision is greatly improved, preferably, an included angle between the head portion of the sampling camera 341 and the horizontal direction is 50 degrees, when the included angle is too large, the range which can be acquired by the sampling cameras 341 is reduced, detection deviation is easily caused, when the included angle is too small, the position of a required glass bottle is higher, and information acquisition is not easy to perform.
Preferably, the camera assembly 34 further includes a first mounting plate 342, the camera assembly 34 is connected to the rotating bracket 33 through the first mounting plate 342, the first mounting plate 342 is of a U-shaped structure and has a downward opening, one end of the two side plates is provided with a first mounting hole 3421, the sampling camera 341 is fixedly connected to the first mounting plate 342 through the first mounting hole 3421, as preferred, the other end of the two side plates is provided with a first sliding groove 3422, the first sliding groove 3422 is of an arc-shaped structure, the center of the arc-shaped circle coincides with the axis of the first mounting hole 3421, and the inside of the first sliding groove 3422 is movably connected to the rotating bracket 33 through a connecting member, so that people can adjust the angle according to needs.
In this embodiment, the rotating module 3 further comprises a light source assembly 36, the light source assembly 36 is located below the rotating bracket 33, see figure 6, which includes a light source 362 and a third mounting plate 361 for increasing the sampling brightness, the third mounting plate 361 has a 7-shaped structure, two third sliding grooves 3611 are arranged at two ends of the transverse plate above the light source module, a connecting piece is arranged in each third sliding groove 3611 and is used for connecting the third mounting plate 361 with the rotating bracket 33 in a sliding manner through the connecting piece, so that the light source module 36 is arranged towards the rotating axis direction of the rotating bracket 33, and the distance between the light source assembly 36 and the rotation axis of the rotating bracket 33 can be adjusted through the third chute 3611, four corners of a vertical plate of the third mounting plate 361 are provided with four fourth sliding grooves 3612, the fourth sliding grooves 3612 are vertically arranged, the light source 362 is slidably connected with the fourth sliding groove 3612 through a connector, and the height of the light source 362 can be adjusted through the fourth sliding groove 3612.
Further, in the present embodiment, the light source assembly 36 includes two light sources 362, the two light sources 362 are oppositely disposed, and the detection portion is provided with two sets of imaging light paths, each set includes two sampling cameras 341 and one light source 362. Adjacent first and second sampling cameras 3411 and 3412, and light sources on opposite sides of the second sampling camera 3412 are grouped together, and adjacent third and fourth sampling cameras 3413 and 3414 are grouped together to form a group of light sources on opposite sides of the fourth sampling camera 3414. Two sets of imaging optical paths can reduce the rotation angle of rotation module 3, the double optical path that this embodiment adopted need cover 360 only whole rotation 180 can, different colour light source 362 collocation sampling camera 341's light filter can realize mutual noninterference between the station, two light source subassembly 36 are axisymmetric for the bottleneck center and arrange to eliminate the interference of bottleneck and suture, simultaneously in rotation module 3 rotation process, sampling camera 341 gathers certain quantity of images according to setting for the frame rate, of course, imaging optical path also can set up one set of or multiunit, this embodiment does not do any restriction.
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 that stations do not interfere with each other, when a group of imaging light paths are arranged, the colors of the light sources 362 are not required, and when viewed from the vertical projection of the glass bottle mouth and the light source assembly 36, the vertical line between the center of the bottle mouth and the plane where the light source assembly 36 is located is sufficient, and the light source assembly can also be located outside the light source assembly 36, as further preferred, a light shield (not shown) is further installed at the detection station for shielding outside stray light.
Further, referring to fig. 8, from the vertical projection of the glass bottle opening and the light source assembly 36, the perpendicular line of the center of the bottle opening and the plane of the red light source 3621 and the green light source 3622 is sufficient to coincide with the outer edge of the side of the light source assembly 36 close to the glass bottle opening, so as to prevent the light source 362 from lighting the joint line on the glass bottle, thereby causing false detection due to interference, meanwhile, the more the perpendicular line of the center of the bottle opening and the plane of the light source assembly 36 is sufficient to be located outside the light source assembly 36, the smaller the area of the bottle opening lighted by the light source is, that is, the smaller the detectable area collected by the sampling camera 341 under a single frame is, and more times of collection are needed in the rotation process to achieve non-blind-area detection of 360 degrees, therefore, the most preferred embodiment is that the perpendicular line of the center of the bottle opening and the plane of the red light source 3621 and the green light source 3622 is sufficient to coincide with the outer edge of the side of the light source assembly 36 close to the glass bottle opening.
Further, the imaging optical 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 may be modified according to the use requirement, so as to ensure that the mirror assembly 35 can reflect the bottleneck information to the camera assembly 34, and this embodiment does not set any limit to the position of the camera assembly 34 and the mirror assembly 35.
Further, referring to fig. 6, the mirror assembly 35 is provided with four mirror assemblies and is located at the same height around the rotating bracket 33 for reflecting the bottleneck image to the camera assembly 34, and includes a mirror 352 and a second mounting plate 351, two sides of the second mounting plate 351 extend backwards to be provided with connecting plates, the upper ends of the connecting plates are provided with second mounting holes 3511, a second chute 3512 is arranged below the second mounting hole 3511, the second chute 3512 is of an arc structure, the center of the arc coincides with the axis of the second mounting hole 3511, the mirror 352 is fixedly connected with the second mounting plate 351, the second mounting plate 351 is rotatably connected with the rotating bracket 33 through the second mounting hole 3511, a connecting piece is arranged through the second chute 3512, so that the mirror assembly 35 can be adjusted in angle according to needs, the practicability of the device is greatly increased, the distance from the light source assembly 36 to the rotating axis is reduced by the arrangement of the mirror assembly 35, inertia of the whole system is reduced, detection speed is improved, and certainly, the number of the reflector assemblies can be selected according to actual needs, and the 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 located 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 located below the second mirror 3522, and the green light source 3622 is located below the fourth mirror 3524.
In this embodiment, the first sampling camera 3411, the second sampling camera 3412, the third mirror 3523, the fourth mirror 3524 and the green light source 3622 form a set of optical paths, the third mirror 3523 and the fourth 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 mirror 3521, the second mirror 3522 and the red light source 3621 form another set of optical paths, the first mirror 3521 and the second mirror 3522 are respectively used for reflecting bottleneck image information to the third sampling camera 3413 and the fourth sampling 3414, the second sampling camera 3412 and the fourth sampling camera 3414 are perpendicular to the two light sources 362 to form front light field imaging, and the first sampling camera 3411 and the third sampling camera 3413 are parallel to the light sources to form side light field imaging.
The detection principle of the detection optical path is described below with reference to two sets of optical path imaging diagrams of fig. 9 and 10, where fig. 9 is an imaging diagram of the second sampling camera 3412 or the fourth sampling camera 3414, where fine cracks in the plane of the bottle mouth are focused on, the cracks are distributed transversely on the surface of the bottle mouth, and under the optical path, normal regions do not reflect light and appear black, and crack regions 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, where the fine cracks at the edge of the bottle mouth are focused on, the cracks are distributed longitudinally on the inner edge of the bottle mouth, and under the optical path, normal regions do not reflect light and appear black, and crack regions reflect light to form longitudinal bright spots.
In this embodiment, the joints of the rotating bracket 33 and the first and second mounting plates 342, 351 are sliding groove structures, and the first and second mounting plates 342, 351 are connected with the rotating bracket 33 in a sliding manner, so that people can adjust the distance between the camera assembly 34, the reflector assembly 35 and the rotating axis of the rotating bracket 33 according to the use requirements, and the practicability and the applicability of the device are greatly improved.
In this embodiment, referring to fig. 12, the detection system has the following working procedures: the detection system sends information to the PLC control unit when the photoelectric sensor detects that a glass bottle enters a monitoring range, the PLC control unit controls the follow-up rotation system and the image acquisition system to start running, the follow-up rotation system comprises the reciprocating follow-up module 2 and the rotation module 3, the image acquisition system is a camera assembly 34 on the rotation module 3, the camera assembly 34 transmits acquired graphic information to the image processing system, the image processing system converts the graphic signals into electric signals through an image processing algorithm and transmits the electric signals to the control system, a user can check detection information according to the human-computer interaction system, and the control system controls the rejecting system to act according to bottle mouth quality information transmitted by the image processing system to complete rejecting work of defective products.
In this embodiment, referring to fig. 11, the image processing flow of the rotation module 3 is as follows: photoelectric sensor detects glass bottle signal on the production line to give camera subassembly 34 with the signal transmission, camera subassembly 34 control light source subassembly 36 scintillation and take a picture, and the picture that will gather after the completion of shooing is given image processor for, and image processor transmits image information to PLC the control unit, under the effect of encoder, generates bottleneck quality information, and this information feedback is to interface processor, and staff's accessible touch-sensitive screen knows relevant information. In addition, the PLC control unit can also control the actions of the alarm module and the rejecting module according to the received bottle mouth quality information, specifically, when the bottle mouth is found to have defects, the alarm lamp is started, and the rejecting device is controlled to work to reject the defective glass bottles.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A linear follow-up bottle mouth crack detection system is used for detecting the quality of a glass bottle mouth on a production line, it is characterized by comprising a control module, a fixed module (1), a reciprocating follow-up module (2) and a rotating module (3), wherein the fixed module (1) is fixedly arranged above a production line, a reciprocating follow-up module (2) is connected below the device in a sliding way, the reciprocating follow-up module (2) can do periodic horizontal reciprocating motion along the running direction of the production line, a rotating module (3) is rotatably connected below the rotating module, the rotating module (3) comprises one or more information acquisition devices which are circumferentially arranged, the rotating module (3) can rotate along a vertical rotating axis, and the control module controls the reciprocating follow-up module (2) and the rotating module (3) to act.
2. The linear follow-up bottle mouth crack detection system according to claim 1, wherein the reciprocating follow-up module (2) comprises a guide rail (21), a slider (22), a moving plate (23) and a first driving device, the guide rail (21) is horizontally arranged below the fixed module (1), the moving plate (23) is slidably connected with the guide rail (21) through the slider (22), the moving plate (23) is further connected with the first driving device, and the moving plate (23) can horizontally reciprocate under the driving of the first driving device.
3. The linear follow-up bottle mouth crack detection system as claimed in claim 2, wherein the radius of gyration of the rotation module (3) is smaller than the distance between the front and rear glass bottles on the production line, and the distance between the starting point and the end point of the reciprocating motion of the reciprocating follow-up module (2) is smaller than the distance between the front and rear glass bottles on the production line.
4. The linear follow-up bottle mouth crack detection system according to claim 1, wherein the rotating module (3) comprises a second driving device and a rotating bracket (33), the rotating bracket (33) is vertically arranged and is rotatably connected with the reciprocating follow-up module (2), the upper end of the rotating bracket is provided with the second driving device, and the rotating bracket (33) can be driven by the second driving device to rotate.
5. The linear follow-up bottle mouth crack detection system according to claim 4, wherein the rotary support (33) comprises an adapter plate, a hanging plate and a connecting plate, the adapter plate is positioned at the upper end of the rotary support (33) and is rotatably connected with the reciprocating follow-up module (2), the hanging plate is arranged below the adapter plate, and the adapter plate is connected with the hanging plate through the connecting plate.
6. The linear follow-up bottle mouth crack detection system according to claim 5, wherein the information acquisition device is located on the connecting plate between the adapter plate and the hanging adapter plate, and comprises a camera assembly (34), and the camera assembly (34) is rotatably connected with the connecting plate.
7. The linear follow-up bottle mouth crack detection system according to claim 6, characterized in that the rotating module (3) further comprises a light source assembly (36), and at least one pair of camera assemblies (34) is provided, wherein 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).
8. A linear follow-up finish crack detection system according to claim 7, characterized in that the rotary module (3) further comprises a mirror assembly (35), the mirror assembly (35) being capable of reflecting the finish image to the camera assembly (34).
9. The linear follow-up bottle opening crack detection system as claimed in claim 8, wherein, when viewed from the vertical projection of the glass bottle opening and the light source assembly (36), the center of the bottle opening is sufficiently perpendicular to the plane of the light source assembly (36), and is located outside the light source assembly (36), or coincides with the outer edge of the light source assembly (36) on the side close to the glass bottle opening.
10. A linear follow-up bottle mouth crack detection system as claimed in any one of claims 1 to 9, wherein the detection system is further provided with an alarm module and/or a rejection module.
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