CN112526628A - Device and method for detecting suspended foreign matters in rotary transparent container bottle - Google Patents
Device and method for detecting suspended foreign matters in rotary transparent container bottle Download PDFInfo
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Abstract
The application provides a device and a method for detecting suspended foreign matters in a rotary transparent bottle, wherein the device comprises: the rotary large disc is provided with a plurality of bases, detection modules and light source assemblies, wherein the bases are arranged at intervals in the circumferential direction; during detection, the bottle pressing head moves downwards to be matched and combined with the base to clamp a container bottle to be detected, the light source assembly and the detection module rotate synchronously along with the rotating large disc in a whole circle mode, the container bottle rotates along with the rotating large disc and simultaneously rotates automatically, the detection module is matched with the light source assembly to acquire image information of the rotating container bottle and feed the image information back to the control module, the control module receives and responds to the image information and transmits an instruction to the rejecting mechanism connected with the control module, and the rejecting mechanism acts according to the received instruction. The detection device is free from the interference of the shape and the external characteristics of the container bottle, and has wide applicability.
Description
Technical Field
The application relates to a detection device, in particular to a device and a method for detecting suspended foreign matters in a rotary special-shaped transparent container bottle.
Background
In the production line of wine beverage and medicine filling, the detection of suspended foreign matters in a container is a difficult problem which is always troubled manufacturers. Particularly, the container bottle with special shape or the characteristics of patterns, angular embossments and the like on the surface is finished in a manual detection mode at present, so that the production efficiency is low and the cost is high. And the omission ratio of tiny suspended matters is high. The common linear visual detection system can hardly achieve good detection effect on the special-shaped bottles and can only detect the local parts of the container bottles. And the contamination outside the container bottle easily causes erroneous judgment of the detection system.
Therefore, there is a need for an improved detection system for suspended foreign matter of the existing clear container bottle.
Disclosure of Invention
In order to overcome the defects, the application provides a device and a method for detecting the suspended foreign matters in the bottle aiming at the foreign bottle, and the device can overcome the defect that the interference on the detection caused by the characteristics of the container bottle can not be eliminated when the traditional detection system is used for detecting. Even if the outer wall of the container bottle is dirty, the detection precision is not affected. The detection device can replace manual work to be applied to the online monitoring of the suspended foreign matters after the filling of the transparent bottle, and the product quality is ensured.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a rotary type device for detecting suspended foreign matters in a transparent container bottle is characterized by comprising a rotary large disc, a plurality of bases, detection modules and light source components, wherein the rotary large disc is arranged at intervals in the circumferential direction, the detection modules correspond to the bases one by one, the light source components correspond to the detection modules and are arranged on the outer side,
the upper side of the base is provided with a matched bottle pressing head which can move up and down, the bottle pressing head moves downwards to clamp a container bottle to be detected based on the up-and-down movement of the bottle pressing head, the bottle pressing head is matched and combined with the base to clamp the container bottle to be detected, and the base is connected with a driving device;
when in detection, the light source component and the detection module rotate synchronously along with the rotating large disc in a whole circle,
the container bottle rotates along with the rotating large disc and simultaneously rotates automatically, the detection module is matched with the light source assembly to acquire image information of the rotating container bottle and feed the image information back to the control module, the control module receives and responds to the image information and transmits an instruction to the rejecting mechanism connected with the control module, and the rejecting mechanism acts according to the received instruction. The reject mechanism thus distinguishes the container bottles based on the received information and the predetermined place where they are distributed. The detection device is free from the interference of the shape and the external characteristics of the container bottle during operation, has wide applicability and can be applied to all transparent bottles; the stability of detection is better, can promote the recognition rate and reduce the false recognition rate, ensures product quality.
In one embodiment, the light source assembly is mounted on the outer side of the rotating large plate, the detection module is mounted on the inner side of the large plate, the container bottle is located between the light source assembly and the detection module, and during detection, the light source assembly is turned on, and light rays of the light source assembly penetrate through the container bottle and enter the detection module.
In one embodiment, in the foreign matter detection device, during detection, the container bottle rotates along with the rotating large disc and is driven to rotate automatically by the motor drive based on the base.
In one embodiment, the detection module obtains image information of the vial.
In one embodiment, the foreign object detection apparatus further includes: a linear container bottle transmission component, a first star wheel component and a third star wheel,
the linear container bottle conveying component sequentially conveys the container bottles to be detected into the first star wheel component, the container bottles synchronously rotate along with the first star wheel component and are conveyed to a preset base on the rotary big disc when reaching a preset position,
the rotating large disc rotates based on the driving of the driving portion, the container bottles synchronously rotate along with the rotating large disc, when the container bottles rotate to a preset position, the container bottles are conveyed to the removing mechanism through the third star wheel assembly, and the removing mechanism distinguishes the container bottles based on instructions so that the container bottles are conveyed to a preset place.
The embodiment of the application also provides a method for detecting suspended foreign matters in a rotary transparent container bottle, which is characterized by comprising the following steps:
s1, a container bottle to be detected enters a preset base of a large rotating disc and rotates along with the large rotating disc;
s2, moving the bottle pressing head to the side of the container bottle to enable the bottle pressing head and the base to be combined to clamp the container bottle;
s3, the container bottle is enabled to rotate automatically based on the driving of the first driving part matched with the base, and the container bottle self-rotating device comprises:
the container bottle is driven by the first driving part to rotate forwards and backwards at first, then the container bottle is controlled to rotate at a constant speed, the image information of the container bottle is acquired at a high speed based on the detection module and fed back to the control module while the container bottle rotates at the constant speed,
s4, the control module judges whether foreign matters exist in the container bottle or not based on the received plurality of image information and transmits the judged information to the removing mechanism,
s5, receiving and responding to the information, the rejecting mechanism distinguishes the container bottles so as to distribute the container bottles to a preset place. Preferably, the normal rotation speed is different from the reverse rotation speed in step S3, for example, the normal rotation speed is greater than the reverse rotation speed, so that the foreign matters in the bottle float to the visible area and keep moving.
In one embodiment, in step S3: based on the driving of the first driving component, the container bottle rapidly rotates forwards at a first preset rotation speed for a first preset time t1, and then rapidly rotates backwards at a second preset rotation speed for a second preset time t 2. The foreign matter in the bottle floats to the visible area and keeps moving by the excitation mode.
In one embodiment, the step S3 further includes: when the container bottle rotates at a constant speed, the detection module acquires N pieces of image information of the container bottle in each circle of rotation.
In one embodiment, the step S3 further includes: the container bottle rotates M circles at a constant speed, and the control module judges whether suspended matters exist in the container bottle or not based on the received comparison of M pictures at the same position, wherein N, M is a natural number. Therefore, N pictures are taken in each circle in the process of constant-speed self-rotation of the container bottle, and the process lasts for M circles. A container bottle camera shoots NxM pictures in total, and the positions of the pictures shot in each circle are ensured to be the same, namely the pictures are shot in N positions in total, and each position has M pictures. Whether suspended matters exist in the bottle can be analyzed by comparing M pictures at the same position. When the foreign matters are not suspended, the multiple pictures at the same position are the same even if the bottles are irregular or embossed.
In one embodiment, the step S1 further includes: the container bottle to be detected slides to the end part of the container bottle to be detected along the first guide part based on the first guide part and then enters the base of the large rotating disc, and the container bottle to be detected slides to the third star wheel assembly along the second guide part based on the second guide part.
Advantageous effects
Compared with the prior art, the rotary type suspended foreign matter detection device provided by the application can overcome the influence of a linear foreign matter detection device on detection of irregular-shaped bottles and bottle surface characteristics, and stably distinguishes suspended foreign matters and external characteristics (special shapes or characteristics such as patterns, corner embossments and the like on the surfaces) in the bottles. The detection device is free from the interference of the shape and the external characteristics of the container bottle during operation, has wide applicability and can be applied to all transparent bottles. Compared with the current scheme that the camera swings back and forth in a follow-up mode, the method is low in requirement on servo driving, better in synchronism and better in detection stability, and can improve the recognition rate and reduce the false recognition rate.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting suspended foreign matter in a rotating transparent bottle according to an embodiment of the present disclosure;
fig. 2 and 3 are schematic views of the detection module for detecting the container bottle in fig. 1 at different viewing angles.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions employed in the examples may be further adjusted as determined by the particular manufacturer, and the conditions not specified are typically those used in routine experimentation.
The embodiment of the application provides a this detection device, its rotatory detection station, this detection station is including rotatory deep bid, its upwards spaced disposes the plural base of placing the container bottle of waiting to detect in circumference, the both sides of this base dispose light source subassembly and detection module that match respectively, and this light source subassembly disposes in the outside, the top side of this base disposes the bottle pressing head of matching, but this bottle pressing head up-and-down motion, make bottle pressing head move to container bottle side (downwards) and carry the container bottle of waiting to detect with base matching combination based on bottle pressing head up-and-down motion during the detection. When the container bottle rotates along with the rotating big disc, the motor drive based on the base drives the container bottle to rotate automatically, the light source assembly and the detection module are matched to acquire image information of the rotating container bottle and feed back the image information to the control module, the control module receives and processes the image information to judge whether foreign matters exist in the container bottle and transmit instructions to the rejecting mechanism connected with the control module, and the rejecting mechanism conveys the container bottle to a preset place according to the received instructions. The base is connected with a driving device (such as a motor and a servo motor), and the driving device drives the base to rotate so as to drive the container bottles on the base to rotate. In this embodiment, when the container bottle is compressed without self-rotation, the light source assembly, the detection die and the bottle pressing head are relatively static. After the container bottle is pressed, the container bottle starts to rotate in a set program section, and the detection module shoots a plurality of image information of the container bottle in the rotating process. By the design, the detection device is not interfered by the shape and the external characteristics of the container bottle during operation, has wide applicability and can be applied to all transparent bottles; the stability of detection is better, can promote the recognition rate and reduce the false recognition rate, ensures product quality.
Next, referring to fig. 1 to 3, a device for detecting suspended foreign matters in a rotary transparent bottle according to an embodiment of the present invention will be described in detail.
FIG. 1 is a schematic structural diagram of a device for detecting suspended foreign matter in a rotating transparent bottle according to an embodiment of the present disclosure;
the detection device comprises a linear container bottle transmission part 1, wherein after container bottles to be detected are loaded from a feeding hole of the linear container bottle transmission part 1, the container bottles to be detected want to move in a preset direction, the container bottles to be detected sequentially enter a first star wheel 20 and rotate along with the first star wheel 20 after being driven by a bottle feeding spiral driving part 11, the container bottles enter a preset base on a rotary large disc 30 after rotating to a preset position, and a bottle pressing head 34 on the upper side of the base moves to press the container bottles to be detected on the matched base. The rotating dial 30 is driven to rotate by the driving unit 31, and the container bottles are rotated in synchronization with the rotating dial 30. When rotated to the preset position, the bottles are returned to the conveyor by the third star 40. Preferably, the conveyor belt can be designed as one piece with the conveyor belt of the linear transport element 1. The container bottles identified as having the suspended foreign matter are removed from the production line by the removing mechanism 70, and conveyed to a predetermined place. In this embodiment, the circumferential direction of the rotating main plate 30 is provided with a plurality of detecting modules 32 at intervals, and the light source assemblies 33 corresponding to the detecting modules 32 in a one-to-one matching manner (that is, each bottle pressing head 34 has one light source assembly 33 and one detecting module 32 in a matching manner), and the container bottles to be detected are located between the light source assemblies 33 and the detecting modules 32 during detection. The detection module 32 and the light source assembly 33 rotate along with the corresponding bottle-pressing head 34 during the rotation of the rotating large disk 30. When the vial is clamped without self-rotation, the light source assembly 33, the detection module 32, and the vial pressing head 34 remain relatively stationary. In one embodiment, the light source assemblies 33 are disposed above the rotating plate 30, the light source assemblies 33 move downward after the vials enter the rotating plate 30, the vials start to rotate in a set program segment after being pressed, and the detection module 32 (camera) captures images of the vials during rotation. The detection device further comprises a control module, wherein the control module is respectively and electrically connected with the spiral driving part, the driving parts of the first star wheel, the second star wheel and the third star wheel, and the motor is electrically connected with the light source assembly, the detection module, the bottle pressing head and the base and controls the operation of the detection module based on instructions. The base is provided with a sensing device (such as a pressure sensor and a photosensitive sensor) for identifying whether a container bottle exists or not and transmitting detected information to the control module, and the control module controls the bottle pressing head electrically connected with the control module to move to clamp the container bottle based on the received information. When the second star wheel moves to a preset container bottle disengaging position, the control module controls the bottle pressing head which is electrically connected with the control module to move to loosen the container bottle.
In one embodiment, as shown in fig. 1, a guide 50 is included, the guide 50 including a first guide 54 that cooperates with the first starwheel 20 such that the recessed vials of the first starwheel 20 slide along the first guide 54 to an end 55 of the first guide 54 and onto the base of the carousel 30. Preferably, the first guide portion 54 has a curvature, and further, the curvature of the first guide portion 54 is the same as that of the first star wheel 20. The guide member 50 includes a second guide 51 that cooperates with the third starwheel 40 such that the vials in the pockets 41 of the third starwheel 40 slide along the second guide 51 to an end 52 of the second guide 51 and enter the conveyor belt. Preferably, the second guide portion 51 has a curvature, and further, the curvature of the second guide portion 51 is the same as that of the third star wheel 40. In one embodiment, the first guide portion 54 and the second guide portion 51 are symmetrically arranged.
In one embodiment, the centers of the first starwheel (also referred to as the first starwheel assembly) 20, the rotating carousel 30, and the third starwheel (also referred to as the third starwheel assembly) 40 are isosceles or equilateral triangles. The design is beneficial to reducing the volume of the detection device.
In one embodiment, as shown in fig. 1, the first starwheel 20, the rotating carousel 30, and the third starwheel 40 are disposed within the housing 60.
In an embodiment, the plurality of light source assemblies and the detection modules corresponding to the light source assemblies one to one are fixed on the second star wheel through the fixing pieces respectively, each light source assembly further comprises a telescopic part, the light source assemblies move to preset positions based on the telescopic parts during detection, the light source is lightened, light penetrates through the container bottle, and brightness required for photographing is provided for the detection modules (such as cameras). In other embodiments, the method is not limited to this embodiment as long as the plurality of light source assemblies and the detection modules corresponding to the light source assemblies rotate synchronously with the second star wheel while the second star wheel rotates.
The light source assembly adopts a backlight installation mode, the light source assembly is installed on the outer side of the rotary large disc, the detection module is installed on the inner side of the large disc, and the container bottle is located between the light source assembly and the detection module. When taking a picture, light enters the detection module through the container bottle.
An embodiment of detecting the container bottle based on the detection module is described next with reference to fig. 2 and 3.
After the bottle is put on the base, the retractable member 34a moves toward the bottle, the bottle pressing head 34 contacts the bottle, and the bottle is clamped by the bottle pressing head 34 and the tray 35 at the bottom. The tray 35 is connected to a servo motor 36, and the tray 35 is driven to rotate by the servo motor 36. In one embodiment, the tray 35 is connected to an output end of the servo motor 36, and the tray 35 is rotated by driving of the servo motor 36. In one embodiment, the tray 35 is connected to a speed reduction device, which is connected to a servo motor, and the tray 35 is rotated by the servo motor. The light source assembly 33 and the detection module 32 are respectively located at two sides of the container bottle. During detection, the light source assembly 33 is turned on, and light enters the detection module 32 (such as a camera) through the bottle 1. During the rotation of the rotating disk 30, the detecting module 32 and the light source assembly 33 rotate together with the container bottle 1, and at this time, the detected container, the detecting module 32 and the light source assembly 33 are kept still except for the self-rotation of the container bottle. The servomotor 36 is also referred to as a first drive member.
For further detection of the detection accuracy, in one embodiment the container bottle starts to spin after being pressed by the pressing pin. The self-rotation of the container bottle is divided into two stages, the first stage is an excitation stage, and the excitation stage is used for driving foreign matters in the bottle to float to a visible area and keeping a motion state. In the excitation stage, the tray is driven by the servo motor to rotate at a high speed in one direction (the first preset rotation speed, such as the rotation speed, is higher than 10 circles per second), and then the servo motor is controlled to rotate at a high speed in the opposite direction (the second preset rotation speed, such as the rotation speed, is higher than 5 circles). The speed of the excitation phase and the number of revolutions can be set and adjusted according to different products. The second stage is the detection stage. And controlling the servo motor to rotate at a given speed at a constant speed in a detection stage. And controlling the camera to take a picture in the process of uniform speed self-rotation. N pictures are taken in each circle in the process of constant-speed self-rotation of the container bottle, and the process lasts for M circles. A container bottle camera shoots NxM pictures in total, and the positions of the pictures shot in each circle are ensured to be the same, namely the pictures are shot in N positions in total, and each position has M pictures. Whether suspended matters exist in the bottle can be analyzed by comparing M pictures at the same position. When the foreign matters are not suspended, the multiple pictures at the same position are the same even if the bottles are irregular or embossed. On the contrary, through the forward and reverse rotation excitation process, the suspended foreign matters can drift in the liquid in the container, and the moving target, namely the suspended matters can be separated through analyzing and processing a plurality of images at the same position. Multiple position shooting can guarantee that the suspended solid can not have the dead angle and be detected.
The embodiment of the application provides a detection method of the detection device, and the detection method comprises the following steps:
s1, a container bottle to be detected enters a preset base;
s2, moving the bottle pressing head to the side of the container bottle to enable the bottle pressing head and the base to be combined to clamp the container bottle;
s3, the container bottle is driven to rotate automatically (for example, rotate at a constant speed) based on the drive of the drive part matched with the base, the image information of the container bottle is acquired at a high speed based on the detection module and fed back to the control module while the container bottle rotates at the constant speed,
s4, the control module judges whether foreign matters exist in the container bottle or not based on the received image information and transmits the judged information to the removing mechanism,
and S5, receiving and responding to the information by the rejecting mechanism to distribute the container bottles to the preset places.
In one method, in step S3, the method further includes rotating the container bottle at a high speed for a first preset time t1 (e.g., 1S, 2S, 3S as occasion demands) in one direction and then at a high speed for a second preset time t2 (e.g., 1S, 2S, 3S as occasion demands) in another direction based on the driving of the driving part matched with the base, wherein the directions selected in the previous and subsequent two times are different, so that the foreign matters in the bottle are efficiently driven to float to the visible region and keep in a moving state.
In one method, step S3 further includes: when the container bottle rotates at a constant speed, the detection module acquires N pieces of image information of the container bottle in each circle of rotation. Further, the container bottle rotates automatically at a constant speed (rotation for short) for M circles.
In one method, step S3 further includes that the detection module acquires/captures N pieces of image information (photos) every rotation of the container bottle during the constant-speed self-rotation process, and rotates M times. Wherein N, M is a natural number. Such a container bottle camera takes a total of NxM pictures, ensuring that the positions of the pictures taken in each circle are the same, i.e. the total of N positions of the taken images, and M pictures in each position. Whether suspended matters exist in the bottle can be analyzed by comparing M pictures at the same position. When no suspended foreign matter exists, multiple images at the same position are the same, even if the bottle is an irregular bottle or a relief bottle (namely, the method adopts the mode of taking pictures at the same position of each circle and taking pictures at multiple positions when the bottle is rotated for multiple circles), and the detection precision is improved. Thus, the detection precision can be improved by comparing and analyzing the moving images by a plurality of images at the same position. On the contrary, through the forward and reverse rotation excitation process, the suspended foreign matters can drift in the liquid in the container, and the moving target, namely the suspended matters can be separated through analyzing and processing a plurality of images at the same position. In the present embodiment. The suspended substance can be guaranteed to be detected without dead angles based on shooting at a plurality of positions.
The above embodiments are merely illustrative of the technical concepts and features of the present application, and the purpose of the embodiments is to enable those skilled in the art to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the present application are intended to be covered by the scope of the present application.
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| CN202011258086.XA CN112526628A (en) | 2020-11-11 | 2020-11-11 | Device and method for detecting suspended foreign matters in rotary transparent container bottle |
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| CN202011258086.XA CN112526628A (en) | 2020-11-11 | 2020-11-11 | Device and method for detecting suspended foreign matters in rotary transparent container bottle |
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| CN113049610A (en) * | 2021-04-14 | 2021-06-29 | 湖南正中制药机械有限公司 | Lamp inspection mechanism and method for detecting foreign matters in large-capacity solution bottle |
| CN113433138A (en) * | 2021-06-25 | 2021-09-24 | 楚天科技股份有限公司 | Visual detection method for container foreign matter |
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