Machine vision mistake proofing device

Abstract

The invention discloses a machine vision mistake proofing device which comprises a material conveying assembly and a vision misplacement recognition assembly, a portal frame is fixedly arranged on the side edge of the material conveying assembly, and the vision misplacement recognition assembly is fixedly connected to the side wall of the portal frame. And the visual mistake-proofing recognition assembly comprises a protection shell, a circular protection seat, a protection baffle and an industrial recognition camera, and the industrial recognition camera is used for conducting visual recognition mistake proofing on industrial materials. When the material conveying assembly starts material conveying every time, the protective baffle can be automatically driven to rotate, the outer surface of the protective baffle passes through the cleaning part to be automatically cleaned, accordingly, pollutants are effectively prevented from being accumulated on the protective baffle, it is ensured that the industrial recognition camera always has a clear observation view field, and then the recognition and detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial automation detection equipment, and particularly relates to a machine vision mistake-proofing device. BACKGROUND

[0002] Machine vision mistake-proofing technology plays a crucial role in modern industrial automation production. It captures images of materials or products through industrial cameras and analyzes, identifies and judges them using image processing algorithms, thereby realizing automatic detection and interception of quality problems such as missing, misplacing, assembly defects, size inconsistency and position deviation, effectively preventing unqualified products from flowing into the next process or being shipped, and ensuring production quality and efficiency.

[0003] In actual industrial application scenarios, especially in environments such as food processing, powder metallurgy, building material production and plastic injection molding, which are prone to dust, smoke, oil stains or water vapor; the lens of the industrial recognition camera, as a key component for direct observation of the outside world, is exposed to the above-mentioned polluted environment for a long time, and its outer surface is extremely easy to attach pollutants. These attachments can cause the image quality captured by the camera to deteriorate significantly, resulting in problems such as blurring, reduced contrast and increased noise, which can significantly affect the accuracy and reliability of image recognition algorithms, leading to misjudgment or missed judgment.

[0004] That is, the prior art has the following technical problems: the pollutants accumulated on the observation window of the industrial camera of the ordinary machine vision mistake-proofing equipment can cause a decrease in recognition accuracy. Therefore, a machine vision mistake-proofing device is proposed to solve the above-mentioned problems. SUMMARY

[0005] A machine vision mistake-proofing device is provided in the present embodiment to solve the problem of pollutants accumulated on the observation window of the industrial camera of the ordinary machine vision mistake-proofing equipment in the prior art, which can cause a decrease in recognition accuracy.

[0006] According to one aspect of the present application, a machine vision mistake-proofing device is provided, which comprises a material conveying assembly and a visual mistake identification assembly. A gantry is fixedly arranged at the side of the material conveying assembly. A visual mistake identification assembly is fixedly connected to the side wall of the gantry. The visual mistake identification assembly comprises a protective shell, a circular protective seat, a protective baffle and an industrial recognition camera. The industrial recognition camera is used for visual mistake-proofing identification of industrial materials.

[0007] A circular protective seat is fixedly connected to the bottom of the protective shell. A rotatable protective baffle is arranged at the bottom of the circular protective seat. The protective baffle is used for shielding and protecting the industrial recognition camera. A linkage part is further arranged between the visual mistake identification assembly and the material conveying assembly. The linkage part is used for automatically rotating and self-cleaning the protective baffle when the material conveying assembly conveys materials.

[0008] Further, the material conveying assembly comprises a fixed frame, rotating rollers, a conveying belt and a servo motor, the bottom of the fixed frame is fixedly connected with a support base, the side wall of the fixed frame is rotatably connected with a plurality of rotating rollers, and the conveying belt is connected between the rotating rollers in a sleeved manner.

[0009] Further, the side wall of the fixed frame is also fixedly connected with a servo motor, one end of the servo motor is fixedly connected with one end of the rotating roller.

[0010] Further, the protective shell is L-shaped, a circular protective seat is fixedly arranged at the bottom end of the protective shell, and an industrial identification camera is fixedly connected in the inner cavity of the protective shell.

[0011] Further, the protective baffle is made of transparent material.

[0012] Further, a rotating rod is fixedly connected at the center of the protective baffle, the rotating rod is rotatably connected between the inner wall of the protective shell, the outer side wall of the circular protective seat is fixedly connected with a fixed support, a cleaning part is fixedly connected on the fixed support, and the cleaning part is in contact with the outer surface of the protective baffle.

[0013] Further, the linkage part comprises a first transmission rod, a second transmission rod, a synchronous wheel A and a synchronous wheel B, the first transmission rod is arranged in the inner cavity of the protective shell and rotatably connected with the protective shell, one end of the first transmission rod is fixedly connected with a second bevel gear, the arc-shaped wall of the rotating rod is fixedly connected with a first bevel gear, and the first bevel gear and the second bevel gear are in meshing relationship.

[0014] Further, one end of the first transmission rod extends out of the wall of the protective shell, the first transmission rod penetrates through the gantry and is rotatably connected with the gantry, one end of the first transmission rod is fixedly connected with a third bevel gear, the side wall of the gantry is also fixedly connected with a fixed foot stand, the second transmission rod is rotatably connected on the fixed foot stand, one end of the second transmission rod is fixedly connected with a fourth bevel gear, and the fourth bevel gear and the third bevel gear are in meshing relationship.

[0015] Further, the synchronous wheel B is fixedly connected with the rotating roller in a coaxial manner, the synchronous wheel A is fixedly connected with one end of the second transmission rod, and the synchronous wheel A and the synchronous wheel B are connected in a sleeved manner.

[0016] Through the above-mentioned embodiments of the present application, in order to solve the technical problem that in the prior art, when the ordinary machine vision mistake-proofing device performs material identification and mistake-proofing detection through an industrial identification camera, dust, oil stains and other pollutants generated in the industrial production environment are easy to adhere to the camera lens, resulting in blurred imaging and reduced identification accuracy, the present application sets a rotatable protective baffle at the bottom of the visual mistake-proofing identification assembly, and simultaneously cooperates with the linkage part, so that the protective baffle can be automatically driven to rotate when the material conveying assembly starts to convey material each time, so that its outer surface passes through the cleaning part to realize automatic cleaning, thereby effectively preventing pollutants from accumulating on the protective baffle, ensuring that the industrial identification camera always has a clear observation field of view, and further improving the accuracy of identification and detection, and the present application is particularly suitable for use in industrial scenes such as food processing, powder metallurgy, building material production and plastic injection molding where dust or smoke is easy to generate. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 the overall structure schematic diagram of an embodiment of the present application;

[0019] Figure 2 the structure schematic diagram of a material conveying assembly of an embodiment of the present application;

[0020] Figure 3 the side structure schematic diagram of an embodiment of the present application;

[0021] Figure 4 the front structure schematic diagram of an embodiment of the present application;

[0022] Figure 5 the internal structure schematic diagram of a visual mistake-proofing identification assembly of an embodiment of the present application;

[0023] Figure 6 the structure schematic diagram of a linkage part of an embodiment of the present application.

[0024] As shown in the figure, 1, material conveying assembly; 101, fixed rack; 102, support chassis; 103, rotating roller; 104, conveying belt; 105, servo motor; 2, gantry; 3, visual misplacement identification assembly; 301, protective shell; 302, circular protective seat; 303, protective baffle; 304, industrial identification camera; 305, fixed support; 306, cleaning part; 307, rotating rod; 4, linkage part; 401, first transmission rod; 402, first bevel gear; 403, second bevel gear; 404, third bevel gear; 405, second transmission rod; 406, fourth bevel gear; 407, fixed foot support; 408, synchronous wheel A; 409, synchronous wheel B; 410, synchronous belt. DETAILED DESCRIPTION

[0025] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts should belong to the scope of protection of the present application.

[0026] Please refer to Figure 1 and Figure 2 As shown in the figure, a machine vision mistake-proofing device includes a material conveying assembly 1 and a visual misplacement identification assembly 3. The side of the material conveying assembly 1 is fixedly provided with a gantry 2, and the side wall of the gantry 2 is fixedly connected with the visual misplacement identification assembly 3. The visual misplacement identification assembly 3 includes a protective shell 301, a circular protective seat 302, a protective baffle 303, and an industrial identification camera 304. The industrial identification camera 304 is used for visual identification mistake-proofing of industrial materials.

[0027] The bottom of the protective shell 301 is fixedly connected with the circular protective seat 302, and the bottom of the circular protective seat 302 is provided with a rotatable protective baffle 303. The protective baffle 303 is used for shielding and protecting the industrial identification camera 304. The visual misplacement identification assembly 3 and the material conveying assembly 1 are further provided with a linkage part 4. The linkage part 4 is used for automatically rotating and self-cleaning the protective baffle 303 when the material conveying assembly 1 conveys materials.

[0028] In order to solve the technical problem that ordinary machine vision mistake proofing equipment is prone to imaging blur and recognition accuracy decline due to the attachment of dust, oil stains and other pollutants generated in the industrial production environment on the camera lens when identifying materials and detecting mistakes through an industrial recognition camera in the prior art, the bottom of the visual mistake proofing identification assembly 3 is provided with a rotatable protective baffle 303, which can be automatically driven to rotate and pass through the cleaning part 306 to realize automatic cleaning every time the material conveying assembly 1 starts to convey materials, thereby effectively preventing pollutants from accumulating on the protective baffle 303 and ensuring that the industrial recognition camera 304 always has a clear observation field of view, thereby improving the accuracy of recognition and detection, and being particularly suitable for use in industrial scenes such as food processing, powder metallurgy, building material production and plastic injection molding which are prone to produce dust or smoke.

[0029] As a specific technical solution, refer to Figure 1 and Figure 2 , the material conveying assembly 1 includes a fixed rack 101, a rotating roller 103, a conveying belt 104 and a servo motor 105, the bottom of the fixed rack 101 is fixedly connected with a support chassis 102, the side wall of the fixed rack 101 is rotatably connected with a plurality of rotating rollers 103, and the conveying belt 104 is connected between the plurality of rotating rollers 103. Through this technical solution, a material conveying platform is formed, the support chassis 102 ensures the stability of the overall structure, the servo motor 105 drives the rotating roller 103 to rotate, thereby driving the conveying belt 104 to move in a cycle, realizing the conveying of materials and providing a basis for visual detection process.

[0030] As a further technical solution, refer to Figure 3 , the side wall of the fixed rack 101 is also fixedly connected with a servo motor 105, one end of the servo motor 105 is fixedly connected with one end of the rotating roller 103, through this technical solution, an accurate controllable power source is provided, the servo motor 105 can accurately control the start-stop, running speed and position of the conveying belt 104 according to the instructions of the control system, thereby cooperating with the visual detection rhythm to ensure that each material to be detected can be accurately stopped under the industrial recognition camera 304 for identification.

[0031] As a preferred technical solution, refer to Figure 4 and Figure 5As shown in the drawings, the protective shell 301 is L-shaped, and a circular protective seat 302 is fixedly arranged at the bottom end of the protective shell 301. An industrial identification camera 304 is fixedly connected in the inner cavity of the protective shell 301, and the camera lens of the industrial identification camera 304 is vertically downward and faces the protective baffle 303. Through the technical scheme, the L-shaped protective shell 301 is convenient to install and fix on the gantry 2, and the circular protective seat 302 provides a limiting basis for rotation. The lens of the industrial identification camera 304 is arranged vertically to the protective baffle 303, which ensures a good imaging angle.

[0032] As a preferred technical scheme, in order to ensure the identification effect of the industrial identification camera 304, the protective baffle 303 is made of transparent material, preferably tempered glass or polycarbonate PC. Through the technical scheme, the protective baffle 303 plays a physical protection role while not significantly affecting the light imaging of the industrial identification camera 304, ensuring the image quality.

[0033] The center of the protective baffle 303 is fixedly connected with a rotating rod 307, which is rotatably connected with the inner wall of the protective shell 301. Specifically, the rotating rod 307 is rotatably connected between the circular protective seat 302 and the corresponding seat hole inner wall of the protective shell 301, so that the protective baffle 303 can rotate around the central axis. The outer side wall of the circular protective seat 302 is fixedly connected with a fixed bracket 305, and the fixed bracket 305 is fixedly connected with a cleaning part 306. The cleaning part 306 is in contact with the outer surface of the protective baffle 303. The cleaning part 306 is preferably made of soft material, such as a cleaning block made of a brush, a rubber blade or a dust-free cloth, and its working surface is in elastic contact with the outer surface of the protective baffle 303. Through the technical scheme, when the protective baffle 303 rotates, the dust, water vapor and other pollutants attached to its outer surface will be effectively scraped or wiped off, realizing automatic cleaning.

[0034] As a specific technical scheme, referring to Figure 5 and Figure 6 As shown in the drawings, the linkage part 4 includes a first transmission rod 401, a second transmission rod 405, a synchronous wheel A 408 and a synchronous wheel B 409. The first transmission rod 401 is arranged in the inner cavity of the protective shell 301 and rotatably connected with the protective shell 301. One end of the first transmission rod 401 is fixedly connected with a second bevel gear 403, and the arc-shaped wall of the rotating rod 307 is fixedly connected with a first bevel gear 402. The first bevel gear 402 and the second bevel gear 403 are meshed with each other. Through the technical scheme, a first-stage transmission is formed, which converts the rotary motion of the first transmission rod 401 into the rotary motion of the rotating rod 307 and the protective baffle 303.

[0035] Further, one end of the first transmission rod 401 extends to the outside of the wall of the protective shell 301, the first transmission rod 401 penetrates the gantry 2 and is rotationally connected with the gantry 2, one end of the first transmission rod 401 is fixedly connected with a third bevel gear 404, a fixed foot stand 407 is further fixedly connected at the side wall of the gantry 2, a second transmission rod 405 is rotationally connected on the fixed foot stand 407, one end of the second transmission rod 405 is fixedly connected with a fourth bevel gear 406, the fourth bevel gear 406 and the third bevel gear 404 are in meshing relationship, through the technical solution, a second-stage transmission is formed, the rotational movement of the second transmission rod 405 is converted into the rotational movement of the first transmission rod 401, and the power transmission from the device side or lower part to the top visual mistake-proof identification assembly 3 is realized.

[0036] As a specific technical solution, referring to Figure 6 As shown in the figure, the synchronous wheel B 409 is coaxially fixedly connected with the rotating roller 103, the synchronous wheel A 408 is fixedly connected with one end of the second transmission rod 405, and the synchronous wheel A 408 and the synchronous wheel B 409 are connected in a sleeved mode through the synchronous belt 410. Through the technical solution, when the servo motor 105 is started, the rotating roller 103 and the conveying belt 104 are driven to move and convey materials, the rotation of the rotating roller 103 will drive the second transmission rod 405 to rotate through the synchronous transmission chain of the synchronous wheel B 409, the synchronous belt 410 and the synchronous wheel A 408. The power is then transmitted to the first transmission rod 401 through the meshing of the fourth bevel gear 406 and the third bevel gear 404, and finally the rotating rod 307 and the protective baffle 303 are driven to rotate through the meshing of the first bevel gear 402 and the second bevel gear 403. This means that the operation of the conveying belt 104 and the cleaning action of the protective baffle 303 are mechanically linked, and the protective baffle 303 rotates by a certain angle every time the conveying belt 104 operates a cycle, and completes cleaning once through the cleaning part 306. Through the above design, without additional driving motor and control circuit, the cost is more low, and the function of automatic cleaning is realized.

[0037] In summary, the machine vision mistake-proof device described in the specific embodiment has two levels of "mistake-proofing": first, the industrial identification camera 304 identifies and detects the materials on the conveying belt 104, directly preventing the error of the materials from flowing out, such as identifying missing, misloading, defects, etc.; second, through the linkage cleaning mechanism, the industrial identification camera 304 is actively prevented from producing identification errors due to the pollution of the observation window, i.e. the possible "errors" of the detection system itself are prevented. Through the above double mistake-proofing mechanism, the reliability of the entire detection equipment is improved. Preferably, the transmission ratio of the synchronous wheel A 408 and the synchronous wheel B 409 can be set according to the actual working conditions, for example, set to 1:1, so that the protective baffle 303 rotates a quarter of a week or half a week every time the conveying belt 104 operates a cycle, which ensures the cleaning frequency and avoids excessive wear and tear.

[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A machine vision mistake-proofing device, characterized by: The utility model provides a material conveying assembly (1) and visual mistake identification assembly (3), the side of material conveying assembly (1) is fixedly arranged with portal frame (2), the side wall of portal frame (2) is fixedly connected with visual mistake identification assembly (3), visual mistake identification assembly (3) includes protective housing (301), round protective seat (302), protective baffle (303) and industrial identification camera (304), and industrial identification camera (304) is used for visual identification mistake proofing to industrial material, The bottom of protective housing (301) is fixedly connected with round protective seat (302), the bottom of round protective seat (302) is provided with rotatable protective baffle (303), protective baffle (303) is used for shielding protection to industrial identification camera (304), linkage portion (4) is further provided between visual mistake identification assembly (3) and material conveying assembly (1), and linkage portion (4) is used for when material conveying assembly (1) carries out material conveying, makes protective baffle (303) automatic rotation self-cleaning.

2. The machine vision mistake-proofing device of claim 1, wherein: The bottom of the fixed rack (101) is fixedly connected with the support chassis (102), the side wall of the fixed rack (101) is rotatably connected with a plurality of rotating rollers (103), and the conveying belt (104) is connected between the plurality of rotating rollers (103).

3. The machine vision mistake proofing device of claim 2, wherein: One end of the servo motor (105) is fixedly connected with one end of the rotating roller (103).

4. The machine vision mistake proofing device of claim 1, wherein: The protective housing (301) is L-shaped, the bottom end of the protective housing (301) is fixedly provided with a round protective seat (302), and the industrial identification camera (304) is fixedly connected in the inner cavity of the protective housing (301).

5. The machine vision mistake proofing device of claim 1, wherein: The protective baffle (303) is made of transparent material.

6. The machine vision mistake proofing device of claim 1, wherein: The center of the protective baffle (303) is fixedly connected with a rotating rod (307), the rotating rod (307) is rotatably connected between the inner wall of the protective housing (301), the outer side wall of the round protective seat (302) is fixedly connected with a fixed support (305), the fixed support (305) is fixedly connected with a cleaning part (306), and the cleaning part (306) is in contact with the outer surface of the protective baffle (303).

7. The machine vision mistake proofing device of claim 6, wherein: The linkage portion (4) includes a first transmission rod (401), a second transmission rod (405), a synchronous wheel A (408), and a synchronous wheel B (409), the first transmission rod (401) is rotatably connected in the inner cavity of the protective housing (301), one end of the first transmission rod (401) is fixedly connected with a second bevel gear (403), the arc-shaped wall of the rotating rod (307) is fixedly connected with a first bevel gear (402), and the first bevel gear (402) and the second bevel gear (403) are meshed with each other.

8. The machine vision mistake proofing device of claim 7, wherein: One end of the first transmission rod (401) extends to the outside of the wall of the protective shell (301), the first transmission rod (401) penetrates the gantry (2) and is in rotational fit with the gantry (2), one end of the first transmission rod (401) is fixedly connected with a third bevel gear (404), a fixed foot stand (407) is also fixedly connected at the side wall of the gantry (2), a second transmission rod (405) is rotatably connected on the fixed foot stand (407), one end of the second transmission rod (405) is fixedly connected with a fourth bevel gear (406), the fourth bevel gear (406) and the third bevel gear (404) are in meshing engagement.

9. The machine vision mistake proofing device of claim 8, wherein: The synchronous wheel B (409) is coaxially fixedly connected with the rotating roller (103), the synchronous wheel A (408) is fixedly connected with one end of the second transmission rod (405), and the synchronous belt (410) is sleeved and connected between the synchronous wheel A (408) and the synchronous wheel B (409).

10. The machine vision mistake proofing device of claim 9, wherein: The transmission ratio of the synchronous wheel A (408) and the synchronous wheel B (409) is 1:1.

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