Automatic marking and classifying device for body defects of glass bottle after production

Abstract

The application relates to a glass bottle production detection equipment, and particularly discloses a glass bottle body defect automatic marking and classifying device after production, which comprises a control unit, a rack and a defect detection mechanism installed on the rack, the defect detection mechanism comprises a rotating seat, a rotating drive assembly, an image acquisition device, a first lighting assembly and a second lighting assembly, the rotating seat is installed at the output end of the rotating drive assembly, the image acquisition device is installed at the outer periphery of the rotating seat, the first lighting assembly is installed beside the image acquisition device, the rotating seat is provided with an installation groove with an opening upward, the second lighting assembly is installed in the installation groove, a cover plate is detachably installed at the opening of the installation groove, the cover plate is made of transparent material, and the rotating drive assembly, the image acquisition device, the first lighting assembly and the second lighting assembly are electrically connected with the control unit, so that the defect detection efficiency and reliability after the glass bottle production are improved, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of glass bottle production and testing equipment, specifically to an automatic marking and classification device for defects in the bottle body after glass bottle production. Background Technology

[0002] During the glass bottle manufacturing process, due to factors such as raw materials and production processes, some glass bottles may develop defects such as cracks, bubbles, scratches, and deformation. If these defective glass bottles enter the market, they will not only affect product quality and reputation but may also pose safety hazards. Therefore, defect detection is necessary after glass bottle production.

[0003] The production of glass bottles mainly involves a series of processes including pre-processing, melting, forming, heat treatment, and inspection. The inspection process involves checking the quality of the finished glass bottles, classifying and rejecting those with defects (such as bubbles, cracks, spots, and gaps) to ensure product quality. Currently, to ensure accurate analysis of the acquired images of glass bottles and identify existing defects, installing a light source in the detection system is a common method. For example, Chinese utility model patent publication number "CN222587354U" discloses a defect detection system for glass bottle production. Figure 1 The image shown is a top view of the defect detection system provided in this utility model. Paragraph 0041 of the specification discloses that the camera includes a crossbeam fixed between mounting blocks, an LED light source fixed below the crossbeam by connecting blocks, a support plate fixed on the workbench, and a camera connected to the support plate by screws. The camera is aligned with the LED light source, and the camera mechanism can capture images of the glass bottle, which is convenient for the analysis system to make judgments. The light source is used to improve the clarity of the glass images captured by the camera and improve the accuracy of the analysis results.

[0004] While the aforementioned patent provides a light source and image acquisition structure for glass bottle defect detection, the use of a fixed LED light source to illuminate the glass bottle from a single direction makes it difficult to fully cover the curved surface of the bottle. For defects such as minor cracks on the side of the bottle or hidden bubbles on the bottom, insufficient light angle can easily lead to low contrast in the acquired image, thus affecting the accuracy of defect identification. This makes it impossible to effectively and accurately classify and remove defective glass bottles, which is detrimental to ensuring the product quality of the glass bottles. Utility Model Content

[0005] The purpose of this invention is to provide an automatic marking and classification device for bottle defects after glass bottle production, in order to solve the problem that the existing glass bottle defect detection system has a single light source illumination angle and is difficult to fully cover the curved surface of the bottle. As a result, defects such as fine cracks on the side of the bottle and hidden bubbles at the bottom of the bottle have low image contrast due to insufficient light, resulting in poor identification accuracy.

[0006] Basic Solution: An automatic marking and classification device for bottle defects after glass bottle production, including a frame and a defect detection mechanism mounted on the frame, and a control unit electrically connected to the defect detection mechanism. The defect detection mechanism includes a rotating base, a rotating drive assembly, an image acquisition device, a first lighting assembly, and a second lighting assembly. The rotating base is mounted on the output end of the rotating drive assembly, the image acquisition device is mounted on the outer periphery of the rotating base, and the first lighting assembly is mounted beside the image acquisition device. The rotating base has an upward-opening mounting slot, and the second lighting assembly is mounted in the mounting slot. A cover plate made of transparent material is detachably mounted at the opening of the mounting slot. The rotating drive assembly, the image acquisition device, the first lighting assembly, and the second lighting assembly are all electrically connected to the control unit.

[0007] Beneficial effects: The rotating seat in the defect detection mechanism rotates under the drive of the rotating drive component, enabling the image acquisition device to fully capture images of the glass bottle. The first illumination component is installed next to the image acquisition device, and the second illumination component is installed in the mounting slot of the rotating seat and transmits light through the transparent cover. Compared with a single-direction fixed light source, this multi-directional illumination method can more comprehensively cover the curved surface of the glass bottle, avoiding the problem of low image contrast caused by insufficient light illumination angle, improving image clarity and contrast, and thus improving the accuracy of defect identification such as fine cracks on the side of the bottle and hidden bubbles at the bottom of the bottle.

[0008] Preferred Option 1: As a further optimization of the basic option, a limiting platform is provided at the top of the mounting groove. The cover plate is placed on the limiting platform, and the distance between the limiting platform and the upper surface of the rotating seat is consistent with the thickness of the cover plate. Providing a limiting platform at the top of the mounting groove, ensuring the cover plate is placed on it with the distance between the limiting platform and the upper surface of the rotating seat consistent with the cover plate thickness, guarantees a flat installation of the cover plate. This ensures that the light emitted by the second lighting component shines evenly through the cover plate onto the glass bottle, further improving image acquisition quality and defect identification accuracy.

[0009] Preferred Option 2: As a further optimization of Preferred Option 1, an upward-opening receiving groove is provided at the location of the step surface of the limiting stage. A photoelectric sensor is installed in the receiving groove and is electrically connected to the control unit. The control unit includes a main control module, a first relay, and a second relay. The output of the main control module is connected to the power supply circuits of the first and second lighting components via the first and second relays, respectively. The control unit is configured to: respond to the photoelectric sensor detecting that the glass bottle has been placed on the rotating seat, activate the rotation drive component to rotate the rotating seat and trigger the image acquisition device to start continuously or intermittently acquiring images; and control the side lighting component and the bottom center lighting component to turn on in a time-division manner based on the rotation angle signal fed back by the angle detector. By using the photoelectric sensor to detect whether the glass bottle is placed on the rotating seat, the rotation drive component can be automatically activated to rotate the rotating seat and trigger the image acquisition device to acquire images, realizing an automated inspection process and improving inspection efficiency; and controlling the first and second lighting components to turn on in a time-division manner based on the rotation angle signal fed back by the angle detector allows light to illuminate the glass bottle from different angles, fully covering the curved surface of the glass bottle, improving image contrast, and thus improving the accuracy of defect identification.

[0010] Preferred Option 3: As a further optimization of Preferred Option 2, a positioning groove is provided on the outer periphery of the cover plate on the rotating seat. The positioning groove can position the glass bottle, making its position on the rotating seat more accurate, which is beneficial for the image acquisition equipment to acquire images of the glass bottle and improves the accuracy of defect detection.

[0011] Preferred Option 4: As a further optimization of Preferred Option 3, several vent holes penetrating the rotating base are provided in the positioning groove. A support frame is installed below the rotating base, and a vacuum generator is mounted on the support frame. The vent holes are connected to the vacuum generator, which is electrically connected to the control unit. The vacuum generator uses suction to create suction through the vent holes, fixing the glass bottle on the rotating base and preventing displacement or shaking of the glass bottle during rotation and testing, thus ensuring the stability and accuracy of the testing process.

[0012] Preferred Option 5: As a further optimization of Preferred Option 4, the second illumination component is a multi-color light source capable of emitting different colors. By utilizing this multi-color second illumination component, the glass bottle can be illuminated from different angles of light of different colors, compensating for the shortcomings of single-color light illumination. This provides more comprehensive coverage of the curved surface of the glass bottle, improves the contrast of images on different parts of the bottle, and thus more accurately identifies defects such as fine cracks on the side of the bottle and hidden bubbles on the bottom, thereby enhancing the accuracy of defect identification. Attached Figure Description

[0013] Figure 1 This is a top view of the defect detection system provided in a previously published application, which relates to the background art of this utility model; Figure 2 This is a schematic diagram of the automatic marking and classification device for defects in glass bottles after production, according to an embodiment of the present invention. Figure 3 This is a top view of the automatic marking and classification device for glass bottle defects after production, according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the main control unit in the automatic marking and classification device for glass bottle defects after production, according to an embodiment of this utility model.

[0014] The reference numerals in the accompanying drawings include: frame 1, defect detection mechanism 2, rotating seat 21, mounting groove 211, limiting platform 212, receiving groove 213, vent 214, positioning groove 215, rotation drive assembly 22, image acquisition device 23, first lighting assembly 24, second lighting assembly 25, cover plate 26, vacuum generator 27, photoelectric sensor 28, support frame 3, control unit 4, main control module 41, first relay 42, and second relay 43. Detailed Implementation

[0015] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figure 2-4 As shown: This utility model provides an automatic marking and classification device for defects in glass bottles after production, including a frame 1, a defect detection mechanism 2 fixedly installed on the frame 1, and a control unit 4 electrically connected to the defect detection mechanism 2.

[0016] The defect detection mechanism 2 includes a rotating base 21, a rotating drive assembly 22, an image acquisition device 23, a first lighting assembly 24, and a second lighting assembly 25. The output end of the rotating drive assembly 22 is fixedly connected to the rotating base 21 and rotates around the central axis through the rotating drive assembly 22. The rotating drive assembly 22 is composed of a servo motor and a precision reducer to ensure that the rotating base 21 can achieve precise indexing rotation or continuous uniform rotation.

[0017] The image acquisition device 23 is fixedly mounted on the upper outer periphery of the rotating base 21 by a rigid bracket. Its optical axis is precisely aligned with the center area of ​​the positioning groove 215 on the rotating base 21. The first lighting component 24 serves as a side lighting source, using a highly uniform LED ring light source or strip light source, and is directly mounted on the same bracket as the image acquisition device 23 to ensure that its lighting direction is consistent with the framing direction of the image acquisition device 23.

[0018] A mounting groove 211 with an upward opening is provided in the center of the rotating base 21. A cover plate 26 is detachably installed at the location of the mounting groove 211. The mounting groove 211 extends downward from the top of the rotating base 21 but does not penetrate the bottom. A second lighting component 25 for illuminating the area below the glass bottle is fixedly installed at the bottom of the mounting groove 211. The second lighting component 25 uses a high-brightness LED and can be controlled by the control unit 4 to emit multi-color light sources with different colors such as red, green, and blue. It is easy to imagine that after the glass bottles are produced, each glass bottle is labeled or etched with an identification code to indicate its identity through manual or automated means. The control unit 4 has pre-stored information on each type of glass bottle and which color of light should be used for alignment and illumination to better... For color transparency, during defect detection, the information of the glass bottle is first determined by collecting the identification code. The control unit 4 controls the second lighting component 25 to illuminate the glass bottle with the corresponding color, thereby improving the image quality acquired by the image acquisition device 23. A ring of inwardly protruding limiting platform 212 is opened on the upper part of the mounting groove 211 along the circumference of the mounting groove 211. The stepped surface of the limiting platform 212 is precision machined. The distance between the stepped surface of the limiting platform 212 and the upper surface of the rotating seat 21 is exactly equal to the thickness of the transparent cover plate 26. The transparent cover plate 26 is made of tempered glass with high light transmittance or optical grade acrylic material. It is placed stably on the limiting platform 212 in a detachable manner, so that the upper surface of the cover plate 26 and the upper surface of the rotating seat 21 together form a complete smooth plane.

[0019] A receiving groove 213 is provided on the stepped surface of the limiting platform 212. A photoelectric sensor 28 is installed in the receiving groove 213. The detection direction of the photoelectric sensor 28 is facing upwards of the rotating seat 21, and is used to sense whether a glass bottle has been placed on the rotating seat 21.

[0020] A positioning groove 215 is provided on the outer periphery of the limiting platform 212 at the location of the cover plate 26. The shape of the groove matches the bottom contour of the glass bottle to be tested. It can be circular, rectangular, polygonal, or other shapes. In this embodiment, a circular shape is used as an example. In order to further enhance the stability of the glass bottle when the rotating seat 21 rotates to collect multi-angle images of the glass bottle, multiple sets of tiny ventilation holes 214 penetrating the rotating seat 21 are provided at the bottom of the positioning groove 215. These ventilation holes 214 are connected to the vacuum generator 27 installed on the support frame 3 below the rotating seat 21 through the internal channel of the rotating seat 21. The vacuum generator 27 is electrically connected to the control unit 4. When the photoelectric sensor 28 detects that a glass bottle has been placed on the rotating seat 21, the control unit 4 controls the vacuum generator 27 to work, so that negative pressure is generated at the ventilation holes 214 on the rotating seat 21 to enhance the stability of the glass bottle. At the same time, no additional clamping device is used to fix the glass bottle on the outside, ensuring more complete detection.

[0021] The control unit 4 uses an industrial-grade programmable logic controller or a high-performance microcontroller as the main control module 41. It is equipped with a switch control circuit consisting of a first relay 42 and a second relay 43. The output signal terminal of the photoelectric sensor 28 and the signal output terminal of the angle detector built into the rotary drive assembly 22 are respectively connected to the input port of the main control module 41. The output port of the main control module 41 controls the power supply circuit of the first lighting assembly 24 through the first relay 42 and controls the power supply circuit of the second lighting assembly 25 through the second relay 43. At the same time, it directly controls the start and stop of the rotary drive assembly 22, the triggering of the image acquisition device 23 to take pictures, and the operation of the vacuum generator 27.

[0022] The specific implementation process is as follows: An external conveying mechanism (such as a robotic arm or star wheel) places the glass bottle onto the rotating base 21, and the bottom of the bottle falls into the positioning groove 215. At this time, the photoelectric sensor 28 detects that the glass bottle has been positioned and sends a signal to the main control module 41. The main control module 41 activates the vacuum generator 27 to generate negative pressure in the vent 214 to stabilize the glass bottle on the rotating base 21. Simultaneously, it activates the rotation drive assembly 22 to drive the rotating base 21 to rotate and triggers the image acquisition device 23 to start continuous image acquisition at a fixed frame rate. The main control module 41 reads the rotation angle signal of the rotation drive assembly 22 in real time. When the rotation angle signal indicates that the rotating base 21 has not rotated one revolution (360°), the main control module 41 controls the first relay 42 to engage, illuminating the first lighting assembly 24 (side light), and controls the second relay 43 to disengage, turning off the second lighting assembly 25. At this time, the image acquisition device 23 acquires a side image of the glass bottle under side lighting. This lighting method is extremely sensitive to defects such as scratches and dents on the bottle surface. When the angle signal indicates that one rotation has been completed, the main control module 41 controls the first relay 42 to disconnect, turning off the first lighting component 24, and controls the second relay 43 to engage, lighting up the second lighting component 25. The light is emitted from the bottom, penetrates the transparent cover 26 and the bottom of the glass bottle, and forms transmitted illumination on the bottle. The image acquisition device 23 acquires images under these conditions. This lighting method can efficiently detect defects based on differences in light transmittance, such as uneven thickness of the bottle, internal bubbles, impurities, and cracks.

[0023] The control unit 4, in conjunction with the first relay 42 and the second relay 43, completes the time-division control of the lighting mode of the first lighting component 24 and the second lighting component 25, perfectly separating the images of the two lighting effects, avoiding mutual interference of light, and greatly improving the comprehensiveness and accuracy of defect detection.

[0024] After the rotating base 21 has rotated a predetermined number of times and completed the acquisition of all images, the main control module 41 controls the vacuum generator 27 to release the negative pressure and stop rotating. The external robotic arm can then remove the inspected glass bottles for subsequent marking and sorting.

[0025] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic marking and classification device for defects in glass bottles after production, characterized in that: The device includes a frame and a defect detection mechanism mounted on the frame, as well as a control unit electrically connected to the defect detection mechanism. The defect detection mechanism includes a rotating base, a rotating drive assembly, an image acquisition device, a first lighting assembly, and a second lighting assembly. The rotating base is mounted on the output end of the rotating drive assembly, the image acquisition device is mounted on the outer periphery of the rotating base, and the first lighting assembly is mounted at the location of the image acquisition device. The rotating base has an upward-opening mounting slot, and the second lighting assembly is mounted in the mounting slot. A cover plate made of transparent material is detachably mounted at the opening of the mounting slot. The rotating drive assembly, the image acquisition device, the first lighting assembly, and the second lighting assembly are all electrically connected to the control unit.

2. The automatic marking and classification device for glass bottle defects after production according to claim 1, characterized in that: A limiting platform is provided on the upper part of the mounting groove, and the cover plate is placed on the limiting platform. The distance between the limiting platform and the upper surface of the rotating seat is the same as the thickness of the cover plate.

3. The automatic marking and classification device for glass bottle defects after production according to claim 2, characterized in that: The step surface of the limiting platform is provided with an upward-facing receiving groove. A photoelectric sensor is installed in the receiving groove. The photoelectric sensor is electrically connected to the control unit. The control unit includes a main control module, a first relay, and a second relay. The output terminal of the main control module is connected to the power supply circuit of the first lighting component and the second lighting component via the first relay and the second relay, respectively. The control unit is configured to: In response to the photoelectric sensor detecting that the glass bottle has been placed on the rotating base, the rotation drive assembly is activated to drive the rotating base to rotate, and the image acquisition device is triggered to start acquiring images continuously or at intervals. Based on the rotation angle signal fed back by the angle detector built into the rotation drive component, the first lighting component and the second lighting component are turned on in a time-division manner.

4. The automatic marking and classification device for glass bottle defects after production, as described in claim 1, is characterized in that: The rotating seat has a positioning groove on the outer periphery of the cover plate.

5. The automatic marking and classification device for glass bottle defects after production according to claim 4, characterized in that: The positioning groove has several vent holes that penetrate the rotating seat. A support frame is installed below the rotating seat, and a vacuum generator is installed on the support frame. The vent holes are connected to the vacuum generator, and the vacuum generator is electrically connected to the control unit.

6. The automatic marking and classification device for glass bottle defects after production according to claim 1, characterized in that: The second lighting component is a multicolor light source capable of emitting different colors of light.

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