Hardware button surface defect automatic detection device based on machine vision

Abstract

The utility model discloses a hardware button surface defect automatic detection device based on machine vision, which belongs to the technical field of hardware button production and processing, and comprises an optical screening machine body, the optical screening machine body comprises a rotating disc, a lower image capturing unit is arranged at the bottom of one side of the rotating disc, and an upper image capturing unit is arranged at the bottom of the other side of the rotating disc. An upper image taking unit is arranged above the side, adjacent to the lower image taking unit, of the rotating disc, and two discharging assemblies are arranged on the other side of the rotating disc. The cleaning assembly is arranged on the other side, adjacent to the lower image taking unit, of the rotating disc; by arranging the two sets of cleaning plates, the cleaning device is simple in structure, convenient and practical, can abut against the surface of the rotating disc under pushing of the spring, and cleans the upper surface and the lower surface of the rotating disc along with rotation of the rotating disc, so that stains and dust remaining on the surface of the rotating disc are reduced, the possibility of misjudgment is reduced, and the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of hardware button production and processing technology, specifically to an automatic detection device for surface defects of hardware buttons based on machine vision. Background Technology

[0002] Metal buttons are a common garment accessory, typically made of metal materials such as copper, zinc alloy, and stainless steel. They are sturdy, durable, and have a strong texture, adding a unique decorative effect to clothing. The surface of metal buttons is often treated with electroplating, polishing, and brushing processes, presenting various colors and lusters, such as gold, silver, and bronze, to meet different clothing styles and design needs. They come in a variety of shapes, including conventional shapes such as round, square, and diamond, as well as various unique irregular designs. Furthermore, exquisite patterns and textures can be added to the button surface through engraving and inlay techniques, making them more artistic and visually appealing. Whether used in formal wear, casual wear, or fashionable clothing, metal buttons not only serve to connect garments but also showcase the quality and personality of the clothing. To improve the quality of metal buttons, surface defect inspection is conducted before they leave the factory.

[0003] A search revealed that Chinese Patent Publication No. CN213529672U discloses a button blank defect detection device, comprising a feeding module, a turntable loading module, an image acquisition module, and an electrical control module. The feeding module includes a vibrating plate and a linear vibration groove for vibratingly conveying the button blank to the turntable loading module. The turntable loading module includes a rotating plate and a transmission mechanism for carrying the button blank conveyed by the feeding module. The image acquisition module includes two side image acquisition units and two surface image acquisition units. The side image acquisition units are used to acquire side image data of the button blank, and the surface image acquisition units are divided into an upper surface image acquisition unit and a lower surface image acquisition unit for acquiring upper and lower surface image data of the button blank. The electrical control module is electrically connected to the feeding module, the turntable loading module, and the image acquisition module, respectively, and is used to control the operation of the button blank defect detection device.

[0004] However, the device still has the following drawbacks;

[0005] The device uses a rotating disk to transport buttons and a lower surface imaging unit to collect image information of the lower surface of the buttons through the transparent rotating disk. After long-term use, the surface of the rotating disk may become stained or dusty. When processing the image information of the buttons, the stains or dust on the surface of the rotating disk may be misjudged as surface defects of the buttons, thus affecting the accuracy of the detection. The device does not solve this problem. Utility Model Content

[0006] The purpose of this invention is to provide an automatic detection device for surface defects of metal buttons based on machine vision. By setting two sets of cleaning plates, they can be pushed against the surface of the rotating disk by springs. As the rotating disk rotates, the upper and lower surfaces are cleaned, thereby reducing the residue of dirt and dust on the rotating disk surface, thus reducing the possibility of misjudgment and improving the accuracy of detection, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic detection device for surface defects of metal buttons based on machine vision includes an optical sorting machine body. The optical sorting machine body includes a rotating disk. A lower image acquisition unit is installed at the bottom of one side of the rotating disk. An upper image acquisition unit is arranged above the side of the rotating disk adjacent to the lower image acquisition unit. Two sets of discharge components are arranged on the other side of the rotating disk.

[0009] It also includes a cleaning assembly, which is located on the other side of the rotating disk adjacent to the lower imaging unit. The cleaning assembly includes two sets of symmetrically arranged cleaning plates, which respectively abut against the upper and lower surfaces of the rotating disk. One side of the cleaning plate is fixedly connected to one end of a slide rod, and the slide rod is slidably engaged with a sliding sleeve. A spring is slidably sleeved on the surface of the slide rod.

[0010] Preferably, a limiting plate is fixedly installed at the other end of the slide rod, the slide sleeve is fixedly connected to the mounting frame, the two sets of mounting frames are fixedly connected to the support frame and the base plate respectively, and the support frame is fixedly connected to the base plate.

[0011] Preferably, one end of the spring abuts against the sliding sleeve, and the other end of the spring abuts against the cleaning plate.

[0012] Preferably, the cleaning plate includes a fixing plate, one side of which is fixedly connected to a slide rod, and a cleaning sponge is fixedly installed in the middle of the other side of the fixing plate.

[0013] Preferably, the cleaning sponge has scrapers on both sides, the scrapers are fixedly connected to the fixing plate, and the cleaning sponge and scrapers abut against the surface of the rotating disk.

[0014] Preferably, the bottom of the rotating disk is rotatably mounted on a base plate, and a motor is fixedly mounted on the bottom of the base plate. The output end of the motor is connected to the center of the bottom of the rotating disk.

[0015] Preferably, the lower orientation unit is fixedly installed on the base plate, the upper orientation unit is fixedly installed on the support rod, and the bottom of the support rod is fixedly connected to the base plate.

[0016] Preferably, the discharge assembly includes an air blowing pipe with an air outlet at its bottom facing the discharge pipe. The air blowing pipe is fixedly connected to the discharge pipe via a connecting rod, and the discharge pipe is fixedly connected to the base plate via a connecting frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model features two sets of cleaning plates, a simple and convenient structure. These plates, pushed by springs, press against the surface of the rotating disk, cleaning both the upper and lower surfaces as the disk rotates. This reduces the amount of dirt and dust remaining on the rotating disk, thereby lowering the possibility of misjudgment and improving the accuracy of detection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the base plate;

[0021] Figure 3 This is a schematic diagram of the cleaning component structure;

[0022] Figure 4 This is a schematic diagram of the cleaning board structure.

[0023] In the diagram: 1. Rotating disk; 2. Lower image acquisition unit; 3. Upper image acquisition unit; 4. Cleaning plate; 401. Fixing plate; 402. Cleaning sponge; 403. Scraper; 5. Sliding rod; 6. Sliding sleeve; 7. Spring; 8. Limiting plate; 9. Mounting bracket; 10. Support bracket; 11. Base plate; 12. Motor; 13. Support rod; 14. Air blowing pipe; 15. Air outlet; 16. Material discharge pipe; 17. Connecting rod; 18. Connecting frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution:

[0026] An automatic surface defect detection device for metal buttons based on machine vision includes an optical sorting machine body, model UGB-FR. The optical sorting machine body includes a rotating disk 1. A lower image acquisition unit 2 is installed on the bottom side of one side of the rotating disk 1. An upper image acquisition unit 3 is arranged above the side of the rotating disk 1 adjacent to the lower image acquisition unit 2. The bottom of the rotating disk 1 is rotatably mounted on a base plate 11. A motor 12 is fixedly mounted on the bottom of the base plate 11. The output end of the motor 12 is connected to the center of the bottom of the rotating disk 1. A lower orientation unit is fixedly mounted on the base plate 11. An upper orientation unit is fixedly mounted on a support rod 13. The bottom of the support rod 13 is fixedly connected to the base plate 11. Two sets of discharge components are arranged on the other side of the rotating disk 1.

[0027] A lower image acquisition unit 2 is installed at the bottom of one side of the rotating disk 1, and an upper image acquisition unit 3 is set above the adjacent side. This allows for comprehensive image acquisition of the metal buttons on the rotating disk 1 from both upper and lower directions, avoiding blind spots that may exist when acquiring images from only one direction. This enables more accurate detection of defects on various parts of the button surface, improving the accuracy and reliability of the detection. The acquired image information is transmitted to industrial computers and other processing equipment, where it is analyzed and processed using relevant image detection system software. The software uses preset algorithms and models to extract, identify, and measure the features of the buttons in the image, determining whether the buttons have defects such as chipping, crushing, or scratches. It also analyzes and records information such as the type, location, and size of the defects, thereby achieving automatic detection of surface defects on the metal buttons.

[0028] It also includes a cleaning assembly, which is located on the other side adjacent to the rotating disk 1 and the lower imaging unit 2. The cleaning assembly includes two sets of symmetrically arranged cleaning plates 4, which abut against the upper and lower surfaces of the rotating disk 1, respectively. One side of the cleaning plate 4 is fixedly connected to one end of the slide rod 5. The slide rod 5 is slidably engaged with the sliding sleeve 6. A spring 7 is slidably sleeved on the surface of the slide rod 5. A limit plate 8 is fixedly installed on the other end of the slide rod 5. The sliding sleeve 6 is fixedly connected to the mounting frame 9. The two sets of mounting frames 9 are respectively connected to the support frame 10 and the base plate. 11. Fixed connection: The support frame 10 is fixedly connected to the base plate 11. One end of the spring 7 abuts against the sliding sleeve 6, and the other end of the spring 7 abuts against the cleaning plate 4. The cleaning plate 4 includes a fixed plate 401. One side of the fixed plate 401 is fixedly connected to the sliding rod 5. A cleaning sponge 402 is fixedly installed in the middle of the other side of the fixed plate 401. Scraper strips 403 are provided on both sides of the cleaning sponge 402. The scraper strips 403 are fixedly connected to the fixed plate 401. The cleaning sponge 402 and the scraper strips 403 abut against the surface of the rotating disk 1.

[0029] By setting two sets of cleaning plates 4 to contact the upper and lower surfaces of the rotating disk 1 respectively, this double-sided cleaning method can clean both the upper and lower surfaces of the rotating disk 1 simultaneously, effectively removing dust, impurities, etc. from the surface of the rotating disk 1, preventing them from affecting the imaging effect and detection accuracy, and ensuring the stability of the detection results. The cleaning plate 4 is connected to the mounting frame 9 through an elastic structure composed of a sliding rod 5, a sliding sleeve 6, and a spring 7. The setting of the spring 7 allows the cleaning plate 4 to automatically adjust the pressure according to the rotation of the rotating disk 1, which not only ensures the close contact between the cleaning plate 4 and the surface of the rotating disk 1, but also avoids damage to the rotating disk 1 or cleaning components due to excessive pressure, thus extending the service life of the equipment. By installing a cleaning sponge 402 on one side of the fixed plate 401 and setting scrapers 403 on both sides, the cleaning sponge 402 can absorb dust and fine impurities, while the scrapers 403 can scrape off larger particles of impurities or sticky substances on the surface of the rotating disk 1. The two work together to improve the cleaning effect, ensuring that the surface of the rotating disk 1 is clean and tidy, providing good shooting conditions for the imaging unit.

[0030] The discharge assembly includes an air blowing pipe 14, an air outlet 15 is installed at the bottom of the air blowing pipe 14, the air outlet 15 faces the discharge pipe 16, the air blowing pipe 14 is fixedly connected to the discharge pipe 16 through a connecting rod 17, and the discharge pipe 16 is fixedly connected to the base plate 11 through a connecting bracket 18.

[0031] By setting up two sets of air blowing pipes 14 and discharge pipes 16, the air blowing pipes 14 are fixedly connected to the discharge pipes 16 via connecting rods 17. The air outlet 15 at the bottom of the air blowing pipes 14 faces the discharge pipes 16. Airflow is blown out through the air blowing pipes 14 to blow the buttons into the discharge pipes 16, thereby achieving automatic sorting and discharge. This design has a simple structure, high sorting efficiency, and can quickly separate good and bad products, thus improving the overall working efficiency of the detection device.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for surface defects in metal buttons based on machine vision, characterized in that: The optical sorting machine body includes a rotating disk (1), a lower image acquisition unit (2) is installed at the bottom of one side of the rotating disk (1), an upper image acquisition unit (3) is provided above the side of the rotating disk (1) adjacent to the lower image acquisition unit (2), and two sets of discharge components are provided on the other side of the rotating disk (1). It also includes a cleaning component, which is located on the other side of the rotating disk (1) adjacent to the lower imaging unit (2). The cleaning component includes two sets of symmetrically arranged cleaning plates (4). The two sets of cleaning plates (4) respectively abut against the upper and lower surfaces of the rotating disk (1). One side of the cleaning plate (4) is fixedly connected to one end of the slide rod (5). The slide rod (5) is slidably engaged with the sliding sleeve (6). A spring (7) is slidably sleeved on the surface of the slide rod (5).

2. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 1, characterized in that: The other end of the slide rod (5) is fixedly installed with a limiting plate (8), the slide sleeve (6) is fixedly connected to the mounting frame (9), the two sets of mounting frames (9) are fixedly connected to the support frame (10) and the base plate (11) respectively, and the support frame (10) is fixedly connected to the base plate (11).

3. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 1, characterized in that: One end of the spring (7) abuts against the sliding sleeve (6), and the other end of the spring (7) abuts against the cleaning plate (4).

4. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 1, characterized in that: The cleaning plate (4) includes a fixing plate (401), one side of which is fixedly connected to the slide rod (5), and a cleaning sponge (402) is fixedly installed in the middle of the other side of the fixing plate (401).

5. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 4, characterized in that: The cleaning sponge (402) has scraper strips (403) on both sides. The scraper strips (403) are fixedly connected to the fixing plate (401). The cleaning sponge (402) and the scraper strips (403) abut against the surface of the rotating disk (1).

6. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 1, characterized in that: The bottom of the rotating disk (1) is rotatably mounted on the base plate (11), and a motor (12) is fixedly mounted on the bottom of the base plate (11). The output end of the motor (12) is connected to the center of the bottom of the rotating disk (1) via transmission.

7. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 1, characterized in that: The lower orientation unit is fixedly installed on the base plate (11), the upper orientation unit is fixedly installed on the support rod (13), and the bottom of the support rod (13) is fixedly connected to the base plate (11).

8. The automatic detection device for surface defects of metal buttons based on machine vision according to claim 1, characterized in that: The discharge assembly includes an air blowing pipe (14), an air outlet (15) is installed at the bottom of the air blowing pipe (14), the air outlet (15) faces the discharge pipe (16), the air blowing pipe (14) is fixedly connected to the discharge pipe (16) through a connecting rod (17), and the discharge pipe (16) is fixedly connected to the base plate (11) through a connecting bracket (18).

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