An industrial visual measurement and detection device applied to butterfly valve production

Abstract

This invention relates to the field of optical inspection technology, and in particular to an industrial visual measurement and inspection device for butterfly valve production. The device includes a horizontal main frame, an electrically controlled conveyor belt, a lifting inspection frame, a top limiting frame, an electrically controlled first optical inspection module, and an electrically controlled second optical inspection module. This invention automatically transports butterfly valve workpieces via an electrically controlled conveyor belt, and, in conjunction with the lifting and adjusting of the lifting inspection frame and the tilting adjustment of the central rotating disc, achieves automated visual measurement and inspection of butterfly valve workpieces at multiple angles and positions, significantly improving inspection efficiency and accuracy stability.

Description

Technical Field

[0001] This invention relates to the field of optical inspection technology, and in particular to an industrial visual measurement and inspection device for butterfly valve production. Background Technology

[0002] Butterfly valves are commonly used fluid control valves. With their compact structure, rapid opening and closing, excellent sealing performance, and strong adaptability, they are widely used in fluid pipeline systems across many industries, including petrochemicals, municipal water supply and drainage, HVAC, power, and shipbuilding. They are primarily used to control the on / off flow, regulate flow, and control pressure of pipeline media. Capable of adapting to fluid transport needs under different operating conditions, they are an indispensable core component in pipeline control systems. Their manufacturing precision directly determines the stability, sealing performance, and safety of pipeline operation. Therefore, after butterfly valve production, precise measurement and testing processes are essential to verify key parameters such as valve body dimensions, sealing structure, and opening / closing stroke, ensuring that the finished product's manufacturing precision meets production standards.

[0003] Currently, the inspection of finished butterfly valves is mostly done manually. During the inspection process, workers need to move the butterfly valve parts back and forth, frequently switching between inspection stations to complete various parameter tests. This traditional inspection method has a very low degree of automation. The manual handling process is cumbersome and labor-intensive, not only consuming significant manpower and time costs and greatly extending the inspection cycle for a single product, but also being highly susceptible to human error and damage during handling, affecting the inspection accuracy. Furthermore, manual inspection has limited efficiency and is difficult to adapt to the pace of large-scale butterfly valve production, severely restricting the overall production capacity of enterprises. Therefore, how to achieve automation and high precision in the butterfly valve part inspection process is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] The technical problem this invention aims to solve is that existing butterfly valve testing mostly adopts a manual operation mode. During the testing process, staff need to move the butterfly valve workpiece back and forth and frequently switch testing stations. This results in low automation, high labor intensity, long testing cycles, and the testing accuracy is easily affected by human operation errors and bumps during handling. The testing efficiency is difficult to adapt to the pace of large-scale butterfly valve production and cannot meet the needs of modern, efficient, and high-precision production testing.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an industrial visual measurement and inspection device applied to butterfly valve production, including a horizontal main frame and an electrically controlled conveyor belt. The electrically controlled conveyor belt is installed on the horizontal main frame. A lifting detection frame is installed on the horizontal main frame through lifting guide rails at the front and rear ends. A top limiting frame is fixedly installed on the top of the horizontal main frame through a side frame. An electrically controlled first optical detection module is installed on the lower surface of the top limiting frame. An electrically controlled second optical detection module is installed on the rotating disk in the middle of the lifting detection frame.

[0006] Furthermore, an electrically controlled lifting screw for controlling the lifting detection frame is installed inside the lifting guide rail. The lifting detection frame is threadedly assembled with the electrically controlled lifting screw via internal threaded sliders on both sides of the mounting surface. The lifting detection frame is adjusted up and down along the lifting guide rail by rotating the electrically controlled lifting screw.

[0007] Furthermore, the lifting detection frame has a flip-up opening in the middle, and the central rotating disk is movably installed inside the flip-up opening.

[0008] Furthermore, the upper surface of the lifting detection frame is symmetrically equipped with upper mounting brackets for assembling the central rotating disk on both sides of the flip-up opening, and a lateral adjustment motor for controlling the rotation of the central rotating disk is installed on the outside of the upper mounting brackets.

[0009] Furthermore, two side rotating disks with an integrated structure are installed on both sides of the central rotating disk. The central rotating disk is movably assembled with the side rotating disk by inserting the side rotating disks into the assembly holes inside the upper mounting bracket. The outer side surface of the side rotating disk is provided with arc-shaped toothed grooves.

[0010] Furthermore, a lateral telescopic limit block is installed on the upper surface of the lifting detection frame to limit and lock the angle of the central rotating disk.

[0011] Furthermore, a first flip-and-store slot for installing an electrically controlled first optical detection module is provided on the lower surface of the top limiting frame, and a second flip-and-store slot for installing an electrically controlled second optical detection module is provided on the central rotating disk.

[0012] Furthermore, both the electronically controlled first optical inspection module and the electronically controlled second optical inspection module consist of a flip-up housing, an industrial inspection camera, an industrial measurement camera, and an angle adjustment support rod installed inside the flip-up housing.

[0013] Furthermore, a top air guide nozzle for connecting an external air supply pipe is fixedly installed on the upper surface of the top limiting frame, and the air outlet of the top air guide nozzle is connected to the inside of the first flip-up storage slot.

[0014] Furthermore, a pressure sensor is installed inside the first flip-up storage slot.

[0015] The beneficial effects of this invention are as follows: Through the automated coordination of the electrically controlled conveyor belt, the lifting detection frame, and the central rotating disc, the entire process of butterfly valve workpiece loading, lifting and positioning, and multi-angle flipping detection is fully automated, eliminating the need for manual handling and frequent switching of detection stations, significantly reducing labor intensity and shortening the single-piece inspection cycle. Through dual-module visual measurement using an electrically controlled first optical detection module and an electrically controlled second optical detection module, combined with the lifting adjustment of the lifting detection frame and the flipping adjustment of the central rotating disc, accurate multi-angle and multi-position detection of butterfly valve workpieces is achieved, effectively eliminating the impact of manual operation errors and handling bumps on detection accuracy, significantly improving detection accuracy and stability. The continuous conveying of the electrically controlled conveyor belt and the automatic detection of the optical detection module significantly shorten the detection cycle, adapting to the production rhythm of large-scale butterfly valves and effectively improving the overall production capacity of the enterprise. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the assembly end of the electrically controlled lifting screw in this invention.

[0019] Figure 3 This is a schematic diagram of the assembly structure of the lifting detection frame and the central rotating disk in this invention.

[0020] Figure 4 This is a side view of the central rotating disk in this invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the central rotating disk in this invention.

[0022] Figure 6 This is a schematic diagram of the internal structure of the top limiting frame in this invention.

[0023] Explanation of reference numerals in the attached drawings: 100. Horizontal main frame; 110. Electrically controlled conveyor belt; 200. Lifting guide rail; 210. Electrically controlled lifting screw; 220. Internal threaded slider; 230. Lifting detection frame; 240. Tilting opening; 300. Central rotating disk; 310. Lateral rotating disk; 320. Arc-shaped toothed groove; 330. Upper mounting frame; 340. Lateral adjustment motor; 400. Top limiting frame; 410. Lateral frame; 420. Electrically controlled first optical detection module; 430. Electrically controlled second optical detection module; 440. First tilting storage slot; 450. Second tilting storage slot; 460. Tilting cover; 470. Industrial inspection camera; 480. Industrial measuring camera; 490. Angle adjustment support rod; 500. Lateral telescopic limiting block; 510. Top air vent; 520. Pressure sensor. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figures 1-6 As shown, the testing device in this embodiment includes a horizontal main frame 100 and an electrically controlled conveyor belt 110 mounted on the horizontal main frame 100. The butterfly valve workpiece is automatically conveyed to the testing station along the electrically controlled conveyor belt 110. A lifting testing frame 230 is mounted on the horizontal main frame 100 at the front and rear ends of the electrically controlled conveyor belt 110 via a lifting guide rail 200. A top limiting frame 400 is fixedly mounted on the top of the horizontal main frame 100 via a side frame 410. The top limiting frame 400 and the lifting testing frame 230 are arranged vertically and vertically to form the testing space for the butterfly valve workpiece.

[0027] An electrically controlled lifting screw 210 is installed inside the lifting guide rail 200. The lifting detection frame 230 is threadedly assembled with the electrically controlled lifting screw 210 via internally threaded sliders 220 on both sides of the mounting surface. When the electrically controlled lifting screw 210 is driven to rotate by a servo motor, it drives the internally threaded sliders 220 to slide along the lifting guide rail 200 through threaded transmission, thereby driving the overall lifting and adjustment of the lifting detection frame 230. This allows the lifting detection frame 230 to be adjusted to a suitable detection position according to the height specifications of the butterfly valve workpiece, adapting to the detection requirements of butterfly valves of different specifications.

[0028] The lifting detection frame 230 has a flip-opening 240 in the middle, and the central rotating disk 300 is movably installed inside the flip-opening 240. On the upper surface of the lifting detection frame 230, symmetrically mounted on both sides of the flip-opening 240 are upper mounting brackets 330. Lateral rotating disks 310 are integrally formed on both sides of the central rotating disk 300. The lateral rotating disks 310 are inserted into the mounting holes inside the upper mounting brackets 330 for rotational assembly. Arc-shaped toothed grooves 320 are formed on the outer surface of the lateral rotating disks 310. A lateral adjustment motor 340 mounted on the outer side of the upper mounting brackets 330 drives the central rotating disk 300 to rotate around the horizontal axis via a drive gear on its output shaft meshing with the arc-shaped toothed grooves 320. This drives the butterfly valve fixed on its lower surface to rotate to different angles, achieving adjustment of the butterfly valve workpiece position and thus enabling multi-faceted inspection. The upper surface of the lifting detection frame 230 is also equipped with a lateral telescopic limit block 500. When the middle rotating disk 300 is flipped to a preset angle, the lateral telescopic limit block 500 extends and abuts against the lateral rotating disk 310, limiting and locking the flipping angle of the middle rotating disk 300 to ensure the stability of the position during the detection process.

[0029] An electrically controlled first optical inspection module 420 is mounted on the lower surface of the top limiting frame 400, and an electrically controlled second optical inspection module 430 is mounted on the central rotating disk 300. Both the electrically controlled first optical inspection module 420 and the electrically controlled second optical inspection module 430 consist of a flip cover 460, an industrial inspection camera 470 installed inside the flip cover 460, an industrial measurement camera 480, and an angle adjustment strut 490. The angle adjustment strut 490 controls the flip angle of the flip cover 460 by extending and retracting. The industrial inspection camera 470 is used to capture surface images of the butterfly valve workpiece, and uses image recognition to detect surface defects, sealing surface damage, and other appearance quality issues. The industrial measurement camera 480 is used to acquire dimensional images of the butterfly valve workpiece, and uses visual measurement algorithms to calculate key parameters such as the valve body's external dimensions, sealing structure dimensions, and opening / closing stroke, achieving integrated visual inspection of the butterfly valve workpiece's appearance and dimensions.

[0030] The lower surface of the top limiting frame 400 is provided with a first flip storage slot 440. The electrically controlled first optical detection module 420 is stored inside the first flip storage slot 440 when it is not in operation. When detection is required, it is flipped open by the flip cover 460. The middle rotating disk 300 is provided with a second flip storage slot 450. The electrically controlled second optical detection module 430 is stored inside the second flip storage slot 450 when it is not in operation. A top air nozzle 510 is fixedly installed on the upper surface of the top limiting frame 400. The air outlet of the top air nozzle 510 is connected to the inside of the first flip-up storage slot 440. The top air nozzle 510 is connected to an air supply pipe. Before testing, compressed air is introduced into the first flip-up storage slot 440 through the air supply pipe to blow away the dust in the storage slot and on the surface of the lens of the optical detection module, so as to avoid the dust affecting the imaging quality. A pressure sensor 520 is installed inside the first flip-up storage slot 440 to monitor the air pressure in real time. When the air pressure is abnormal, an alarm signal is issued to prompt the operator to check the air source and pipeline status.

[0031] The detection device in this embodiment is also equipped with an industrial controller. The drive motor of the electrically controlled conveyor belt 110, the servo motor of the electrically controlled lifting screw 210, the lateral adjustment motor 340, the angle adjustment support rod 490, the lateral telescopic limit block 500, the industrial detection camera 470, the industrial measurement camera 480, and the pressure sensor 520 are all electrically connected to the industrial controller. The industrial controller coordinates and controls the actions of each component according to a preset detection process: After the electrically controlled conveyor belt 110 transports the butterfly valve workpiece to the detection station, the photoelectric sensor detects the workpiece's arrival signal, and the industrial controller stops the electrically controlled conveyor belt 110; then, it controls the electrically controlled lifting screw 210 to rotate, which drives the lifting detection frame 230 to descend to the detection position via the internal threaded slider 220; then, it controls the lateral adjustment motor 340 to drive the central rotating disk 300 to rotate via the arc-shaped toothed groove 320, which, together with the angle adjustment support rod 490, controls the detection angle of the optical detection module to achieve automatic detection at multiple angles and multiple stations; after the detection is completed, all components reset, the lifting detection frame 230 rises, and the electrically controlled conveyor belt 110 restarts to send the butterfly valve workpiece out. The industrial controller uses position sensors to provide real-time feedback on the lifting position of the lifting detection frame 230 and the rotation angle of the central rotating disk 300, forming a closed-loop control to ensure the repeatability and accuracy of the detection posture.

[0032] The working process of the detection device in this embodiment is as follows: Before detection, compressed air is introduced into the first flip-and-collect slot 440 through the air supply pipe connected to the top air nozzle 510 to clean the detection environment, and the pressure sensor 520 confirms that the air pressure is normal; the butterfly valve workpiece is placed on the electrically controlled conveyor belt 110, which transports the butterfly valve workpiece to the detection station. After the photoelectric sensor detects that the workpiece is in position, the electrically controlled conveyor belt 110 stops; the industrial controller controls the electrically controlled lifting screw 210 to rotate, and the lifting detection frame 230 descends along the lifting guide rail 200 to the set detection position. The existing electrically controlled clamping arm on the lower surface of the middle rotating disk 300 clamps and fixes the butterfly valve workpiece from the outside to the inside, fixing the butterfly valve on the lower surface of the middle rotating disk 300; then the entire lifting detection frame 230 is raised, and the middle rotating disk 300 is flipped to transfer the butterfly valve workpiece from the lower end to the upper end. Finally, the butterfly valve workpiece is transferred from the middle rotating disk 300 to the lower end. The top limiting frame 400 closes the openings at both ends of the butterfly valve workpiece. The electrically controlled first optical inspection module 420 flips and unfolds from the first flipping storage slot 440. The industrial inspection camera 470 and the industrial measurement camera 480 respectively perform surface inspection and dimensional measurement on the upper interior of the butterfly valve workpiece. At the same time, the electrically controlled second optical inspection module 430 flips and unfolds from the second flipping storage slot 450, driving the electrically controlled second optical inspection module 430 to perform multi-angle inspection on the lower interior and sides of the butterfly valve workpiece. The lateral telescopic limiting block 500 locks the angle of the central rotating disk 300 during the inspection process. The inspection data is transmitted in real time to the image processing unit of the industrial controller for analysis and processing. The qualified butterfly valve workpieces flow out of the inspection station with the electrically controlled conveyor belt 110, and the unqualified workpieces trigger the rejection mechanism. This cycle repeats to realize the continuous automated operation of butterfly valve workpiece inspection.

Claims

1. An industrial vision measurement and inspection device for butterfly valve production, comprising a horizontal main frame (100) and an electrically controlled conveyor belt (110), characterized in that: The electrically controlled conveyor belt (110) is installed on the horizontal main frame (100). The horizontal main frame (100) is equipped with a lifting detection frame (230) via lifting guide rails (200) at the front and rear ends. A top limiting frame (400) is fixedly installed on the top of the horizontal main frame (100) via a side frame (410). An electrically controlled first optical detection module (420) is installed on the lower surface of the top limiting frame (400). An electrically controlled second optical detection module (430) is installed on the rotating disk (300) in the middle of the lifting detection frame (230).

2. The industrial visual measurement and inspection device for butterfly valve production according to claim 1, characterized in that: The lifting guide rail (200) is equipped with an electrically controlled lifting screw (210) for controlling the lifting detection frame (230). The lifting detection frame (230) is threadedly assembled with the electrically controlled lifting screw (210) through the internal threaded sliders (220) on both sides of the mounting surface. The lifting detection frame (230) is adjusted up and down along the lifting guide rail (200) by rotating the electrically controlled lifting screw (210).

3. The industrial visual measurement and inspection device for butterfly valve production according to claim 1, characterized in that: The lifting detection frame (230) has a flip-out opening (240) in the middle, and the central rotating disk (300) is movably installed inside the flip-out opening (240).

4. The industrial visual measurement and inspection device for butterfly valve production according to claim 1, characterized in that: The upper surface of the lifting detection frame (230) is symmetrically mounted on both sides of the flip-out opening (240) with an upper mounting bracket (330) for assembling the central rotating disk (300). A lateral adjustment motor (340) for controlling the rotation of the central rotating disk (300) is mounted on the outer side of the upper mounting bracket (330).

5. The industrial visual measurement and inspection device for butterfly valve production according to claim 1, characterized in that: The central rotating disk (300) is equipped with lateral rotating disks (310) of an integral structure on both sides. The central rotating disk (300) is movably assembled with the central rotating disk (300) by inserting the lateral rotating disks (310) on both sides into the assembly holes inside the upper mounting bracket (330). The lateral rotating disks (310) have arc-shaped toothed grooves (320) on their outer surfaces.

6. The industrial visual measurement and inspection device for butterfly valve production according to claim 3, characterized in that: The upper surface of the lifting detection frame (230) is equipped with a lateral telescopic limiting block (500) for limiting and locking the angle of the central rotating disk (300).

7. The industrial visual measurement and inspection device for butterfly valve production according to claim 1, characterized in that: The lower surface of the top limiting frame (400) is provided with a first flip storage slot (440) for installing the electronically controlled first optical detection module (420), and the middle rotating disk (300) is provided with a second flip storage slot (450) for installing the electronically controlled second optical detection module (430).

8. The industrial visual measurement and inspection device for butterfly valve production according to claim 1, characterized in that: Both the electrically controlled first optical detection module (420) and the electrically controlled second optical detection module (430) consist of a flip cover (460), an industrial detection camera (470), an industrial measurement camera (480), and an angle adjustment support rod (490) installed inside the flip cover (460).

9. An industrial visual measurement and inspection device for butterfly valve production according to claim 7, characterized in that: The top limiting frame (400) is fixedly installed with a top air guide nozzle (510) for connecting an external air supply pipe. The air outlet of the top air guide nozzle (510) is connected to the inside of the first flip storage groove (440).

10. An industrial visual measurement and inspection device for butterfly valve production according to claim 7, characterized in that: A pressure sensor (520) is installed inside the first flip storage slot (440).

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