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CN-121994704-A - Finished product deformed steel bar defect detection system and visual recognition method thereof

CN121994704ACN 121994704 ACN121994704 ACN 121994704ACN-121994704-A

Abstract

The invention relates to the technical field of screw-thread steel defect detection, and discloses a finished screw-thread steel defect detection system and a visual identification method thereof, which solve the problem of low accuracy of the existing detection system and identification method, and comprise an intelligent detection controller and a visual detection device, wherein the visual detection device consists of a supporting frame, a first conveying belt, a second conveying belt, a plurality of auxiliary supporting and positioning components, four groups of dynamic visual detection components and four groups of static visual detection components, and a main control module, a dynamic detection control module, a static detection control module, a detection image identification and defect judgment module, a database, a conveying belt speed control module, a dynamic detection defect position acquisition module, a dynamic detection defect position positioning module, a static detection initial position matching module, a static detection self-adaption calling module and a static detection tracking control module are arranged in the intelligent detection controller; by the detection system and the detection method, the detection efficiency and the detection precision can be improved.

Inventors

  • Lin Pinying

Assignees

  • 上海恭崟实业有限公司

Dates

Publication Date
20260508
Application Date
20260205

Claims (10)

  1. 1. The finished product screw thread steel defect detection system comprises an intelligent detection controller (1) and a visual detection device (2), and is characterized in that the intelligent detection controller (1) is fixedly connected to one end of the top of the visual detection device (2); The visual detection device (2) is composed of a supporting frame (3), a first conveying belt (4), a second conveying belt (5), a plurality of auxiliary supporting and positioning components (6), four groups of dynamic visual detection components (7) and four groups of static visual detection components (8), wherein the first conveying belt (4) and the second conveying belt (5) are respectively connected with the two ends of the supporting frame (3) in a penetrating mode, the auxiliary supporting and positioning components (6) are fixedly connected with the bottom end inside the supporting frame (3) and located between the first conveying belt (4) and the second conveying belt (5), the four groups of dynamic visual detection components (7) are respectively installed at four corners inside the supporting frame (3), and the four groups of static visual detection components (8) are respectively installed at the middle positions of four sides inside the supporting frame (3); The intelligent detection controller (1) is internally provided with a main control module (9), a dynamic detection control module (10), a static detection control module (11), a detection image recognition and defect judgment module (12), a database (13), a conveyor belt speed control module (14), a dynamic detection defect position acquisition module (15), a dynamic detection defect position positioning module (16), a static detection initial position matching module (17), a static detection self-adaptive calling module (18), a static detection tracking control module (19), the dynamic detection control module (10), the static detection control module (11), the detection image recognition and defect judgment module (12), the database (13) and the conveyor belt speed control module (14) are all connected with the main control module (9), the conveyor belt speed control module (14) is connected with the dynamic detection control module (10), the dynamic detection defect position acquisition module (15), the dynamic detection defect position positioning module (16) and the static detection initial position matching module (17), the dynamic detection defect position positioning module (16) is connected with the dynamic detection control module (10) through the dynamic detection defect position acquisition module (15), and the dynamic detection defect position positioning module (16) is connected with the static detection initial position (17) and the static detection control module (11) The static detection initial position matching module (17), the static detection self-adaptive calling module (18) and the static detection tracking control module (19) are connected in series, and the detection image recognition and defect judgment module (12) is connected with the database (13).
  2. 2. A finished steel screw defect detection system according to claim 1 wherein the dynamic visual inspection assembly (7) and the static visual inspection assembly (8) are alternately arranged to form a fully clad structure.
  3. 3. The system for detecting defects of finished threaded steel according to claim 1, wherein the dynamic visual detection assembly (7) is composed of a mounting seat (20), a first visual camera (21) and a positioning bolt (22), the mounting seat (20) is fixedly connected to the inside of the supporting frame (3), the first visual camera (21) is connected with the mounting seat (20) through the positioning bolt (22), and the first visual camera (21) is obliquely arranged and is inclined at an angle of 45 degrees.
  4. 4. The system for detecting defects of finished threaded steel according to claim 1, wherein the static visual detection assembly (8) is composed of a cylinder (23) and a visual camera II (24), the cylinder (23) is fixedly connected to the inner side wall of the supporting frame (3), and the visual camera II (24) is fixedly connected to one end of the cylinder (23).
  5. 5. The system for detecting defects of finished deformed steel bars according to claim 1, wherein the auxiliary supporting and positioning assembly (6) is composed of two Z-shaped brackets (25) and two supporting wheels (26), the Z-shaped brackets (25) are fixedly connected to the bottom end inside the supporting frame (3), and the two supporting wheels (26) are respectively arranged at the top ends of one sides of the two Z-shaped brackets (25).
  6. 6. A finished-product deformed steel bar defect detection system according to claim 1, wherein the two sides of the supporting frame (3) are hinged with an access door body (27).
  7. 7. The system for detecting defects of finished threaded steel according to claim 1, wherein the dynamic detection control module (10) and the static detection control module (11) are composed of an image acquisition unit (28), an image cutting analysis unit (29) and an image feature extraction unit (30), and the image feature extraction unit (30) is connected with the image acquisition unit (28) through the image cutting analysis unit (29).
  8. 8. A finished screw-thread steel defect detection system according to claim 1, wherein the dynamic detection defect position locating module (16) is composed of a screw-thread steel defect surface locating unit (31), a screw-thread steel defect distance locating unit (32) and a screw-thread steel defect surface area locating unit (33).
  9. 9. A finished screw-thread steel defect detection system according to claim 1, wherein the static detection tracking control module (19) is composed of a cylinder acceleration control unit (34), a cylinder uniform velocity control unit (35) and a cylinder return control unit (36).
  10. 10. The visual identification method of the finished screw-thread steel defect detection system according to any one of claims 1 to 9, characterized by comprising the steps of: s1, horizontally conveying the deformed steel bars through a first conveying belt (4) and a second conveying belt (5), and positioning and supporting the deformed steel bars by an auxiliary supporting and positioning assembly (6) to ensure the stability of the deformed steel bars; S2, in the process of conveying the deformed steel bar, performing full-coverage visual detection on four sides of the deformed steel bar through four groups of dynamic visual detection assemblies (7), and performing position marking on the surfaces and the distances of the defect positions when the defect positions are detected; S3, a static vision detection assembly (8) is fast and correspondingly started to a cylinder (23) at a corresponding position according to the defect position, the detected position is fast identified through a dynamic defect position detection positioning module (16) and a static initial position detection matching module (17), and a static detection tracking control module (19) is used for controlling the starting time, acceleration and uniform speed of the cylinder (23) so that the movement speed of a second vision camera (24) is synchronous with the movement speed of the screw steel to form a relatively static state, and therefore static high-precision detection can be achieved; S4, the dynamic detection control module (10), the static detection control module (11) and the detection image recognition and defect judgment module (12) are used for realizing image processing judgment, and defective products are finally confirmed and screened out through manual work.

Description

Finished product deformed steel bar defect detection system and visual recognition method thereof Technical Field The invention belongs to the technical field of deformed steel bar defect detection, and particularly relates to a finished deformed steel bar defect detection system and a visual identification method thereof. Background In the production process of the deformed steel bar, due to factors such as a production process, raw materials, pressing equipment and the like, defects such as scratches, cracks, pits, pitting surfaces, folding, scabs and the like often occur on the surface of the deformed steel bar, and if the defects cannot be found and treated in time, a large amount of waste products are caused for subsequent production, and huge losses are brought to enterprises. At present, a visual camera is generally used for visual inspection of the surface of the deformed steel bar so as to screen out defective products, in order to improve efficiency in the process of detecting the deformed steel bar, dynamic inspection is generally carried out, namely, the deformed steel bar is continuously conveyed, the accuracy of dynamic inspection is lower than that of static inspection, and the static inspection efficiency is lower, so that the application provides a finished deformed steel bar defect inspection system and a visual identification method thereof, and the deformed steel bar can be visually inspected in a dynamic and static combined mode. Disclosure of Invention Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a finished product deformed steel bar defect detection system and a visual identification method thereof, which effectively solve the problem of low accuracy of the existing detection system and identification method. In order to achieve the aim, the invention provides the technical scheme that the finished threaded steel defect detection system and the visual identification method thereof comprise an intelligent detection controller and a visual detection device, wherein the intelligent detection controller is fixedly connected to one end of the top of the visual detection device; The visual detection device is composed of a supporting frame, a first conveying belt, a second conveying belt, a plurality of auxiliary supporting and positioning components, four groups of dynamic visual detection components and four groups of static visual detection components, wherein the first conveying belt and the second conveying belt are respectively connected with two ends of the supporting frame in a penetrating way, the auxiliary supporting and positioning components are fixedly connected with the bottom end inside the supporting frame and are positioned between the first conveying belt and the second conveying belt, the four groups of dynamic visual detection components are respectively arranged at four corners inside the supporting frame, the four groups of static visual detection components are respectively arranged at the middle positions of four side surfaces inside the supporting frame, and the dynamic visual detection components and the static visual detection components are alternately arranged to form a full-cladding structure; The intelligent detection controller is internally provided with a main control module, a dynamic detection control module, a static detection control module, a detection image recognition and defect judgment module, a database, a conveyor belt speed control module, a dynamic detection defect position acquisition module, a dynamic detection defect position positioning module, a static detection initial position matching module, a static detection self-adaptive calling module and a static detection tracking control module, wherein the dynamic detection control module, the static detection control module, the detection image recognition and defect judgment module, the database and the conveyor belt speed control module are all connected with the main control module, the conveyor belt speed control module is connected with the dynamic detection control module, the dynamic detection defect position acquisition module, the dynamic detection defect position positioning module and the static detection initial position matching module, the dynamic detection defect position positioning module is connected with the dynamic detection initial position matching module, the static detection self-adaptive calling module and the static detection tracking control module are connected in series, and the detection image recognition and defect judgment module is connected with the database. Preferably, the dynamic visual detection assembly comprises a mounting seat, a first visual camera and a positioning bolt, wherein the mounting seat is fixedly connected to the inside of the supporting frame, the first visual camera is connected with the mounting seat through the positioning bolt, and the first visual camera is obliquely arranged and h