Machine vision detection system and method

Abstract

The invention provides a machine vision detection system and method, and relates to the technical field of machine vision detection. Comprising a conveying frame, a detection platform and a rear fixing plate, a groove is formed in the conveying frame, the two ends of the groove are rotationally matched with conveying rollers, the conveying rollers are sleeved with a conveying belt, the two ends of the conveying frame are fixedly connected with inclined plate frames, and the detection platform is fixedly connected between the inclined plate frames; the bottom end of the detection platform is fixedly connected with connecting frames, a third motor is fixedly connected between the connecting frames, the driving end of the third motor is fixedly connected with a rotating disc, and the rotating disc is in running fit with the detection platform. The top position of an object is downwards recognized through a third array line camera, completeness and damage are recognized, meanwhile, a third motor can drive a rotary disc to rotate, the rotation effect on the object is completed after rotation, and four-side completeness and damage recognition of the object can be completed through the third array line camera and the first array line camera on the side face.

Description

Technical Field

[0001] The present invention relates to the technical field of machine vision detection, and in particular to a machine vision detection system and method. Background Art

[0002] At present, there is an increasing demand for product quality records and traceability in industrial production. Machine vision inspection has become one of the key technologies in the production process. The machine vision inspection device includes a conveyor belt and a linear array camera. When detecting scratches and other defects on the surface of the object to be inspected, the object to be inspected is transported to the inspection end of the linear array camera through the conveyor belt. The linear array camera inspects the object to be inspected and determines whether the product quality meets the production requirements based on the inspection results.

[0003] Machine vision inspection in the prior art refers to the technology of using machine vision products to convert the inspected target into image signals, extracting and identifying features through a dedicated image processing system, and then controlling the action of on-site equipment. Machine vision inspection simulates human visual functions to achieve automatic inspection and analysis of target objects; however, for different inspection surfaces of the object, the position of the line camera needs to be moved, or the position of the object needs to be moved, resulting in low inspection efficiency and the inability to quickly complete automated inspection work for different surfaces of the object.

[0004] When applying for the present invention, the applicant found through search that a Chinese patent discloses a "machine vision inspection system and method", and its application number is "202211196851.9". This patent mainly solves the problem that the conveyor belt for transporting the object to be measured is generally long in the factory, and there will be jitter during transportation, which causes the object to be measured to shake during the inspection process, reducing the detection effect of the linear array camera. However, different surfaces of the object may be damaged differently during the inspection process, so machine vision is required to complete the inspection work. Therefore, according to the applicant's invention, a method that can be used for machine vision inspection is invented, which solves the problem of low detection efficiency and the inability to quickly complete automated inspection work on different surfaces of the object. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a machine vision inspection system and method, which solves the problems of low inspection efficiency and inability to quickly complete automated inspection work on different surfaces of an object.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a machine vision inspection system and method, comprising: a conveyor frame, an inspection platform and a rear fixed plate, the conveyor frame is provided with a groove shape inside, the two ends of the groove shape are rotatably matched with conveyor rollers, the outer part of the conveyor roller is sleeved with a conveyor belt, both ends of the conveyor frame are fixedly connected with inclined plate frames, the inspection platform is fixedly connected between the inclined plate frames, the bottom end of the inspection platform is fixedly connected with a connecting frame, the connecting frames are fixedly connected with a third motor, the driving end of the third motor is fixedly connected with a turntable, and the turntable and the inspection platform are rotatably matched;

[0009] A rear fixing plate is fixedly connected to the middle of the rear side of the conveying frame, and the four corners of the top of the rear fixing plate are fixedly connected to extension frames, and an electric telescopic rod is slidably matched inside the extension frame, and a slider is fixedly connected to the outer side of the bottom end of the electric telescopic rod, and the slider is slidably matched with the extension frame on one side, and the extension end of the electric telescopic rod is fixedly connected to a push plate;

[0010] One side of the bottom end of the inclined plate frame is rotatably connected to a bidirectional screw, and the other side of the bottom end of the inclined plate frame is fixedly connected to a sliding rod. Both ends of the bidirectional screw are threadedly connected to thread blocks, the top of the thread block is fixedly connected to a loading inclined plate, and the top of the loading inclined plate is fixedly connected to a mounting frame.

[0011] Preferably, pulleys are rotatably connected to the inner ends of the mounting frame, a rotating belt is sleeved on the outer side of the pulley, a plurality of connecting push plates are fixedly connected to the outer side of the rotating belt, a second motor is fixedly connected to the top end of the mounting frame, and the driving end of the second motor is fixedly connected to the pulley.

[0012] Preferably, the loading inclined plate is L-shaped, the two ends of the slide rod are slidably matched with the loading inclined plate, and one end of the bidirectional screw is fixedly connected to a crank.

[0013] Preferably, a fixing frame is fixedly connected to one side of the bottom end of the detection platform, and a second line camera is fixedly connected to one end of the fixing frame.

[0014] Preferably, a third line camera is fixedly connected to a middle portion of the top end of the rear fixing plate, and a first line camera is fixedly connected to a middle portion of an inner side of the rear fixing plate.

[0015] Preferably, the end of the extension frame at one side end is fixedly connected to a first motor, the driving end of the first motor is fixedly connected to a threaded rod, the threaded rod and the extension frame are rotatably matched, one end of the threaded rod is threadedly connected to a moving block, the bottom end of the moving block is fixedly connected to a small telescopic rod, and the extending end of the small telescopic rod is fixedly connected to the push plate.

[0016] Preferably, a roller is rotatably coupled to the inner side of the inclined plate frame on one side.

[0017] A machine vision detection method includes the following detection steps:

[0018] Step S1: First, the object is conveyed by the conveyor belt. When it moves to the inner side of the loading inclined plate during the conveying process, it can be driven by the second motor, which will drive the pulley to rotate. The belt can be fixed to the connecting push plate through the outer rotating belt of the pulley, thereby completing the rotation effect, and the object on the inner side of the loading inclined plate is pushed through the connecting push plate, thereby completing the loading effect. Since the loading inclined plate is in an L-shaped setting, the two ends of the object will be on the upper surface of the loading inclined plate, and the object will be moved to the top of the detection platform by pushing;

[0019] Step S2: When the object is being loaded on the loading ramp, the second line camera is first supported by the fixing frame at the bottom, and the second line camera performs a machine visual inspection on the bottom of the object, so as to identify whether the bottom position of the object is intact or damaged;

[0020] Step S3: by rotating the crank, the bidirectional screw is driven to rotate, and after rotating, it cooperates with the thread of the thread block, so that the thread block can move closer to or farther away from the middle, and objects of different widths can be supported by the bottom end of the feeding inclined plate to complete the adjustment of feeding;

[0021] Step S4: The object is above the detection platform, and the third-line camera on the top of the rear fixed plate identifies the top position of the object downward to identify whether it is intact or damaged. At the same time, the third motor is driven to drive the turntable to rotate, and the object is rotated after the rotation, and the first-line camera on the side can complete the identification of the integrity and damage of the four sides of the object;

[0022] Step S5: After the identification is completed, the first motor is driven to drive the threaded rod to rotate, and after rotation, it is threadedly matched with the moving block to move the small telescopic rod, and the bottom end of the small telescopic rod is connected to the push plate, which slides with the electric telescopic rod to complete the position movement. During the movement, the electric telescopic rod extends and cooperates with the descent of the small telescopic rod. Then, the push plate is used to push the object to move it above the roller. Through the tilt setting of the roller, the object can be slid to the top of the conveyor belt again to complete the normal conveying work.

[0023] (III) Beneficial effects

[0024] The present invention provides a machine vision detection system and method. It has the following beneficial effects:

[0025] 1. The present invention is provided with: a third-line camera, a third motor, a turntable and a first-line motor. The third-line camera identifies the top position of the object downward to identify whether it is intact or damaged. At the same time, the third motor is driven to drive the turntable to rotate. After the rotation, the object is rotated. It can complete the identification of the integrity and damage of the four sides of the object with the first-line camera on the side. Through this structure, comprehensive visual inspection is completed to reduce work defects.

[0026] 2. The present invention is provided with: a second motor, a rotating belt, a connecting push plate and a feeding inclined plate. The second motor drives the pulley to rotate, and the rotating belt through the outer side of the pulley can be fixed to the connecting push plate, thereby completing the rotation effect, and pushing the object on the inner side of the feeding inclined plate through the connecting push plate, thereby completing the feeding effect. Through this structure, the object conveying flow can be changed, and the visual inspection effect of feeding is convenient.

[0027] 3. The present invention is provided with: a small telescopic rod, a connecting push plate and an electric telescopic rod. The small telescopic rod moves, and the bottom end of the small telescopic rod is connected to the push plate, which slides with the electric telescopic rod to complete the position movement. During the movement, the electric telescopic rod extends and cooperates with the descent of the small telescopic rod. Then, the push plate is used to push the object to move it above the roller. Through the inclined setting of the roller, the object can be slid to the top of the conveyor belt again to complete the normal conveying work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a front view schematic diagram of the present invention;

[0030] Figure 3 It is a bottom view schematic diagram of the detection platform of the present invention;

[0031] Figure 4 For the present invention Figure 1 A is an enlarged schematic diagram;

[0032] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of point B in FIG.

[0033] Figure 6 It is a rear side schematic diagram of the present invention;

[0034] Figure 7 It is a schematic diagram of the flow chart of the machine vision detection method of the present invention.

[0035] Among them, 1. conveyor frame; 101. conveyor belt; 103. first line camera; 2. detection platform; 201. inclined plate frame; 202. roller; 203. turntable; 204. fixed frame; 205. second line camera; 3. rear fixed plate; 301. third line camera; 302. first motor; 3021. threaded rod; 303. extension frame; 4. electric telescopic rod; 401. small telescopic rod; 402. push plate; 5. slide bar; 6. rotating belt; 601. connecting push plate; 7. mounting frame; 701. second motor; 702. loading inclined plate; 8. third motor; 801. connecting frame; 9. bidirectional screw; 901. threaded block; 902. crank. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] like Figure 1-7 As shown, an embodiment of the present invention provides a machine vision inspection system and method, including: a conveyor frame 1, an inspection platform 2 and a rear fixed plate 3. The conveyor frame 1 is provided with a groove shape inside, and the groove shape facilitates the driving of the conveyor belt 101 for conveying. Conveyor rollers are rotatably matched at both ends of the groove shape. The outer sleeve of the conveyor roller is provided with a conveyor belt 101. The object is conveyed by the conveyor belt 101. When it moves to the inner side of the loading inclined plate 702 during the conveying process, both ends of the conveyor frame 1 are fixedly connected with inclined plate frames 201, and the inspection platform 2 is fixedly connected between the inclined plate frames 201. The bottom end of the inspection platform 2 is fixedly connected with a connecting frame 801, and the connecting frames 801 are fixedly connected with a third motor 8. The third motor 8 is driven to drive the turntable 203. Rotate, after the rotation, the object is rotated, and the integrity and damage of the four sides of the object can be identified with the first line camera 103 on the side. The driving end of the third motor 8 is fixedly connected with a turntable 203, and the turntable 203 structure can complete the rotation of the object, and machine vision detection can be performed on different surfaces. The turntable 203 and the detection platform 2 are rotated together, and a fixing frame 204 is fixedly connected to one side of the bottom end of the detection platform 2. The second line camera 205 is supported by the fixing frame 204 at the bottom, and one end of the fixing frame 204 is fixedly connected to the second line camera 205. The object is above the detection platform 2, and the third line camera 301 on the top of the rear fixed plate 3 identifies the top position of the object downward to identify integrity and damage;

[0039] A rear fixed plate 3 is fixedly connected to the middle of the rear side of the conveying frame 1, and the four corners of the top of the rear fixed plate 3 are fixedly connected to the extension frame 303. The inner sliding part of the extension frame 303 is matched with the electric telescopic rod 4. The bottom end of the small telescopic rod 401 is connected to the push plate 402, which slides with the electric telescopic rod 4 to complete the movement of the position. A slider is fixedly connected to the outer side of the bottom end of the electric telescopic rod 4. The slider slides with the extension frame 303 on one side. The extension end of the electric telescopic rod 4 is fixedly connected with the push plate 402. The electric telescopic rod 4 extends to cooperate with the descent of the small telescopic rod 401, and then the object is pushed by the push plate 402. The third line camera 301 is fixedly connected to the middle of the top of the rear fixed plate 3, and the first line camera 103 is fixedly connected to the middle of the inner side of the rear fixed plate 3. The end of the extension frame 303 on one side is fixedly connected to the first motor 30 2. The first motor 302 drives the threaded rod 3021 to rotate, so that the position of the small telescopic rod 401 can be moved, which is convenient for pushing and dropping objects through the push plate 402 structure and resetting the small telescopic rod 401. The first motor 302 drives and drives the threaded rod 3021 to rotate. After rotation, it is threadedly matched with the moving block to move the small telescopic rod 401. The driving end of the first motor 302 is fixedly connected with the threaded rod 3021, and the threaded rod 3021 and the extension frame 303 are rotated together. One end of the threaded rod 3021 is threadedly connected with the moving block, and the bottom end of the moving block is fixedly connected with the small telescopic rod 401. The small telescopic rod 401 and the electric telescopic rod 4 structure can be used to lower the push plate 402 to prevent affecting the loading of objects. The extension end of the small telescopic rod 401 is fixedly connected to the push plate 402.

[0040] One side of the bottom end of the inclined plate frame 201 is rotatably connected with a bidirectional screw rod 9, and the other side of the bottom end of the inclined plate frame 201 is fixedly connected with a slide bar 5. Through the action of the slide bar 5, the stable position movement of the loading inclined plate 702 can be maintained. The inner side of the inclined plate frame 201 is rotatably matched with a roller 202. The object can be pushed by the push plate 402 to move it above the roller 202. Through the inclined setting of the roller 202, the object can be slid again to the top of the conveyor belt 101 to complete the normal conveying work. , both ends of the bidirectional screw 9 are threadedly connected with a threaded block 901, and the top of the threaded block 901 is fixedly connected with a feeding inclined plate 702, and the object on the inner side of the feeding inclined plate 702 is pushed through the connecting push plate 601, thereby completing the feeding action, and the top of the feeding inclined plate 702 is fixedly connected with a mounting frame 7, and the mounting frame 7 structure protects the rotating belt 6 structure, and the inner two ends of the mounting frame 7 are rotatably connected with pulleys, and the outer sleeve of the pulley is provided with a rotating belt 6, and the rotating belt 6 can be fixed to the connecting push plate 601 through the outer side of the pulley, thereby completing the rotation action, and the outer side of the rotating belt 6 is fixedly connected with a plurality of connecting push plates 601, and the objects can be pushed upwards through the connecting push plates 601 to complete the conveying and feeding, and one end of the top of the mounting frame 7 is fixedly connected with a second motor 701, and the second motor 701 is driven, and the pulley will be driven to rotate after driving, and the rotating belt 6 can be fixed to the connecting push plate 601 through the outer side of the pulley, thereby completing the rotation action, and the driving end of the second motor 701 and the pulley are fixed Fixed connection, the loading inclined plate 702 is L-shaped. Since the loading inclined plate 702 is in an L-shaped setting, the two ends of the object will be on the upper surface of the loading inclined plate 702. By pushing, the object is moved to the top of the detection platform 2, and the two ends of the slide bar 5 and the loading inclined plate 702 are slidably matched. One end of the bidirectional screw 9 is fixedly connected to a crank 902. By rotating the crank 902, the bidirectional screw 9 is driven to rotate after rotation, and after rotation, it is matched with the thread block 901 thread, so that the thread block 901 can be moved closer to or away from the middle.

[0041] A machine vision detection method includes the following detection steps:

[0042] Step S1: First, the object is conveyed by the conveyor belt 101. When the object moves to the inner side of the loading inclined plate 702 during the conveying process, it can be driven by the second motor 701. After the drive, the pulley will be driven to rotate. The belt 6 can be fixed to the connecting push plate 601 through the outer rotating belt of the pulley, thereby completing the rotation effect, and the object on the inner side of the loading inclined plate 702 is pushed through the connecting push plate 601, thereby completing the loading effect. Since the loading inclined plate 702 is in an L-shaped setting, the two ends of the object will be on the upper surface of the loading inclined plate 702, and the object will be moved to the top of the detection platform 2 by pushing;

[0043] Step S2: When the object is being loaded through the loading ramp 702, the second line camera 205 is first supported by the fixing frame 204 at the bottom, and the second line camera 205 performs a machine visual inspection on the bottom of the object, so as to identify whether the bottom position of the object is intact or damaged;

[0044] Step S3: By rotating the crank 902, the bidirectional screw 9 is driven to rotate, and the screw block 901 is matched with the screw block 901 after rotation, so that the screw block 901 can move closer to or away from the middle, and objects of different widths can be supported by the bottom end of the loading inclined plate 702 to complete the adjustment of loading;

[0045] Step S4: the object is above the detection platform 2, and the third line camera 301 on the top of the rear fixed plate 3 identifies the top position of the object downward, and identifies whether it is intact or damaged. At the same time, the third motor 8 is driven to drive the turntable 203 to rotate, and the object is rotated after the rotation, and the first line camera 103 on the side can complete the identification of the integrity and damage of the four sides of the object;

[0046] Step S5: After the identification is completed, the first motor 302 is driven to drive the threaded rod 3021 to rotate, and after rotation, it is threadedly matched with the moving block to move the small telescopic rod 401, and the bottom end of the small telescopic rod 401 is connected to the push plate 402, which slides with the electric telescopic rod 4 to complete the position movement. During the movement, the electric telescopic rod 4 extends and cooperates with the descent of the small telescopic rod 401. Then, the push plate 402 pushes the object to move it to the top of the roller 202. Through the inclined setting of the roller 202, the object can be slid to the top of the conveyor belt 101 again to complete the normal conveying work.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine vision inspection system, comprising: A conveying frame (1), a detection platform (2) and a rear fixed plate (3), characterized in that: a groove is provided inside the conveying frame (1), and conveying rollers are rotatably matched at both ends of the groove, and a conveying belt (101) is sleeved on the outside of the conveying roller, and both ends of the conveying frame (1) are fixedly connected with inclined plate frames (201), and a detection platform (2) is fixedly connected between the inclined plate frames (201), and the bottom end of the detection platform (2) is fixedly connected with a connecting frame (801), and a third motor (8) is fixedly connected between the connecting frames (801), and the driving end of the third motor (8) is fixedly connected with a turntable (203), and the turntable (203) and the detection platform (2) are rotatably matched; A rear fixing plate (3) is fixedly connected to the middle of the rear side of the conveying frame (1), and the four corners of the top of the rear fixing plate (3) are fixedly connected to extension frames (303), and the interior of the extension frame (303) is slidably matched with an electric telescopic rod (4), and a slider is fixedly connected to the outer side of the bottom end of the electric telescopic rod (4), and the slider is slidably matched with one side of the extension frame (303), and the extension end of the electric telescopic rod (4) is fixedly connected to a push plate (402); One side of the bottom end of the inclined plate frame (201) is rotatably connected to a bidirectional screw rod (9), and the other side of the bottom end of the inclined plate frame (201) is fixedly connected to a slide rod (5). Both ends of the bidirectional screw rod (9) are threadedly connected to thread blocks (901). The top end of the thread block (901) is fixedly connected to a loading inclined plate (702), and the top end of the loading inclined plate (702) is fixedly connected to a mounting frame (7).

2. A machine vision inspection system according to claim 1, characterized in that: The two ends of the interior of the mounting frame (7) are rotatably connected to pulleys, the outer portion of the pulley is provided with a rotating belt (6), the outer side of the rotating belt (6) is fixedly connected to a plurality of connecting push plates (601), the top end of the mounting frame (7) is fixedly connected to a second motor (701), and the driving end of the second motor (701) is fixedly connected to the pulley.

3. A machine vision inspection system according to claim 1, characterized in that: The loading inclined plate (702) is L-shaped, the two ends of the sliding rod (5) are slidably matched with the loading inclined plate (702), and one end of the bidirectional screw rod (9) is fixedly connected to a crank (902).

4. A machine vision inspection system according to claim 1, characterized in that: A fixing frame (204) is fixedly connected to one side of the bottom end of the detection platform (2), and a second line camera (205) is fixedly connected to one end of the fixing frame (204).

5. A machine vision inspection system according to claim 1, characterized in that: A third line camera (301) is fixedly connected to the middle of the top end of the rear fixing plate (3), and a first line camera (103) is fixedly connected to the middle of the inner side of the rear fixing plate (3).

6. A machine vision inspection system according to claim 1, characterized in that: The end of the extension frame (303) at one end is fixedly connected to a first motor (302), the driving end of the first motor (302) is fixedly connected to a threaded rod (3021), the threaded rod (3021) and the extension frame (303) are rotatably matched, one end of the threaded rod (3021) is threadedly connected to a moving block, the bottom end of the moving block is fixedly connected to a small telescopic rod (401), and the extension end of the small telescopic rod (401) is fixedly connected to the push plate (402).

7. A machine vision inspection system according to claim 1, characterized in that: The inner side of the inclined plate frame (201) on one side is rotatably matched with a roller (202).

8. A machine vision inspection method, based on a machine vision inspection system according to any one of claims 1 to 7, characterized in that: The following detection steps are included: Step S1: The second motor (701) drives the rotating belt (6) to move the connecting push plate (601) to complete the feeding process; Step S2: The second line camera (205) identifies whether the bottom position of the object is intact or damaged; Step S3: the third line camera (301) identifies the top position of the object downwards and the first line camera (103) completes the identification of integrity and damage on all four sides of the object; Step S4: The electric telescopic rod (4) and the small telescopic rod (401) are lowered, and the object is pushed by the push plate (402) to complete the normal conveying work.

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