A corrugated pipe black point detection device

Abstract

The utility model discloses a corrugated pipe black point detection device. Corrugated pipe black point detection device includes: workstation is provided support mechanism and detection mechanism on the workstation, the support mechanism includes the rotary table of installation on the workstation, the rotary table is driven rotation through the drive motor of installation on the workstation bottom, the top of rotary table installs a plurality of support tubes, and the corrugated pipe is covered on the support tube, the detection mechanism is used for carrying out black point detection to the corrugated pipe. The utility model provides a corrugated pipe black point detection device through setting up including rotary table, drive motor and a plurality of support tubes'support mechanism on the workstation, can install a plurality of corrugated pipes on the workstation once, and carry out black point detection in turn, can detect the corrugated pipe simultaneously, and the corrugated pipe that has detected is replaced, can effectively improve the detection efficiency of corrugated pipe black point detection equipment.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a device for detecting black spots on corrugated pipes. Background Technology

[0002] Automotive exhaust bellows, also known as automotive exhaust hoses, are installed in the exhaust pipe between the engine exhaust manifold and the muffler, providing a flexible connection for the entire exhaust system. This reduces vibration and noise, facilitates installation, and extends the lifespan of the exhaust muffler system. Primarily used in light vehicles, minivans, and buses, its structure consists of a double-layered bellows covered with a steel wire mesh sleeve, and straight edges at both ends fitted with retaining rings. For even better noise reduction, expansion joints or a wire mesh sleeve can be added inside the bellows.

[0003] Black spot defects (such as impurities, ablation, oxidation, etc.) on the surface of automotive exhaust bellows directly affect sealing performance and lifespan. Black spot inspection must be performed on the bellows before they leave the factory to remove defective products. The conventional inspection method involves placing the bellows on a robotic arm or rotating table, using optical imaging equipment to capture 360-degree images, and then using a dedicated host computer to analyze the images to determine the presence of black spots.

[0004] However, existing testing equipment can only place a new corrugated pipe for testing after the corrugated pipe has been removed after testing, which affects the testing efficiency of the equipment.

[0005] Therefore, it is necessary to provide a device for detecting black spots on corrugated pipes to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a corrugated pipe black spot detection device that can improve the detection efficiency of corrugated pipe black spot detection equipment.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A corrugated pipe black spot detection device includes: a worktable, a support mechanism and a detection mechanism on the worktable; the support mechanism includes a rotary table installed on the worktable, the rotary table is driven to rotate by a drive motor installed at the center of the bottom of the worktable, and multiple support tubes are installed on the top of the rotary table, with the corrugated pipes fitted onto the support tubes; the detection mechanism is used to detect black spots on the corrugated pipes.

[0009] Preferably, the detection mechanism includes a support plate fixedly installed on the side of the workbench, an electric push rod is installed on the support plate, and a black spot detection component is installed at the bottom of the electric push rod.

[0010] Preferably, a main unit is mounted on the support plate, and the main unit is connected to the black spot detection component and the drive motor.

[0011] Preferably, the black spot detection assembly includes a support rod fixedly connected to an electric push rod, a support frame fixedly mounted at the bottom end of the support rod, a rotating shaft mounted on the support frame, the rotating shaft being driven to rotate by a rotary motor mounted on the support frame, a rotating frame fixedly mounted at the bottom end of the rotating shaft, and a camera mounted on the inner side of the rotating frame.

[0012] Preferably, an air jet pipe is installed on the rotating frame, with one end connected to an air pump.

[0013] Preferably, two ring-shaped light sources are mounted on the rotating frame.

[0014] Preferably, the bottom of the workbench has multiple ventilation holes, and each ventilation hole corresponds to a support tube.

[0015] Preferably, a hot air blower and a cold air blower are installed at the bottom of the workbench.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) By setting a support mechanism including a rotary table, a drive motor and multiple support tubes on the workbench, this utility model can install multiple corrugated pipes on the workbench at one time and perform black spot detection in sequence. It can replace the corrugated pipes that have been detected while the corrugated pipes are being detected, which can effectively improve the detection efficiency of the corrugated pipe black spot detection equipment.

[0018] (2) By installing the host on the support plate, this utility model can conveniently control the drive motor and display the black spot detection results;

[0019] (3) By setting up a black spot detection component including a support rod, a support frame, a rotating shaft, a rotating motor, a rotating frame and a camera, this utility model can conveniently take pictures of the bellows and perform black spot detection.

[0020] (4) By installing a ring light source on the rotating frame and using it in conjunction with a polarizer, this utility model can eliminate glare on the surface of the metal bellows, which is beneficial to improving the image quality and the accuracy of black spot detection.

[0021] (5) By installing an air jet pipe on the rotating frame, this utility model can easily clean the dust adhering to the camera and improve the accuracy of black spot detection.

[0022] (6) By installing a hot air blower and a cold air blower at the bottom of the workbench, this utility model can heat up and cool down the corrugated pipe, which is beneficial to improving the imaging quality of the camera. Attached Figure Description

[0023] Figure 1 A schematic diagram of the corrugated pipe black spot detection device provided by this utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of one embodiment of the corrugated pipe black spot detection device is shown.

[0025] Figure 3 for Figure 1 A schematic diagram of the black spot detection component in the bellows black spot detection device shown;

[0026] Figure 4 for Figure 1 The diagram shows a schematic representation of an embodiment of the black spot detection component in the bellows black spot detection device.

[0027] The corresponding names of the attached figures are as follows: 1-Workbench, 2-Rotating table, 3-Drive motor, 4-Support tube, 5-Support plate, 6-Electric push rod, 7-Black spot detection component, 8-Main unit, 9-Ventilation hole, 10-Hot air blower, 11-Cold air blower, 12-Support rod, 13-Support frame, 14-Rotating shaft, 15-Rotating motor, 16-Rotating frame, 17-Camera, 18-Air jet pipe, 19-Ring light source. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0029] Example 1:

[0030] like Figure 1-4As shown, the corrugated pipe black spot detection device provided by this utility model includes: a workbench 1, on which a support mechanism and a detection mechanism are provided; the support mechanism includes a rotary table 2 installed on the workbench 1, the rotary table 2 is driven to rotate by a drive motor 3 installed at the bottom center of the workbench 1, and multiple support tubes 4 are installed on the top of the rotary table 2, with the corrugated pipes fitted onto the support tubes 4 for detection; the detection mechanism is used to detect black spots on the corrugated pipes, and its structure can adopt a common structure. In this embodiment, the detection mechanism includes a support plate 5 fixedly installed on the side of the workbench 1, an electric push rod 6 is installed on the support plate 5, and a black spot detection component 7 is installed at the bottom end of the electric push rod 6. The black spot detection component 7 can rotate 360 ​​degrees to detect black spots on the corrugated pipes on the support tubes 4. Its structure can adopt the structure of common black spot detection equipment, and its working principle will not be described in detail here. For example, image acquisition can use a high-speed industrial camera (e.g., Basler Ace). The image analysis software algorithm flow for the 2Pro series is as follows: A [Image Acquisition] --> B (Preprocessing: Denoising / Enhancement / Distortion Correction); B --> C {Feature Extraction}; C --> D [Morphological Analysis: Black Spot Area / Shape / Edge Sharpness]; C --> E [Chromaticity Analysis: RGB / HSV Space Outlier Detection]; D&E --> F [AI Classification: Convolutional Neural Network (CNN) Determines Defect Type]; F --> G [Output Result: Marking Location / Generating Detection Report]. Through this process, it can be determined whether black spots exist on the corrugated pipe, their size, and type. In use, the drive motor 3 is manually or automatically controlled to rotate intermittently at a certain angle, causing each support pipe 4 to rotate sequentially to the black spot detection component 7 and remain there for a certain period. Then, the black spot detection component 7 performs black spot detection on the corrugated pipe. After detection, the next corrugated pipe rotates to the black spot detection component 7… In this way, a nearly continuous detection process for the corrugated pipe can be achieved, effectively improving the detection efficiency of the equipment. It is worth noting that during the inspection of corrugated pipes, the corrugated pipes that have already been inspected can be replaced, thus not delaying the inspection of other corrugated pipes and improving the inspection efficiency of the equipment.

[0031] By setting a support mechanism including a rotary table 2, a drive motor 3 and multiple support tubes 4 on the workbench 1, multiple corrugated pipes can be installed on the workbench 1 at one time and black spot detection can be performed sequentially. The corrugated pipes that have been inspected can be replaced while the corrugated pipes are being inspected, which can effectively improve the detection efficiency of the corrugated pipe black spot detection equipment.

[0032] Example 2:

[0033] In this embodiment, a host 8 is installed on the support plate 5. The host 8 is connected to the black spot detection component 7. The black spot detection results can be displayed on the host 8, which makes it convenient for personnel to select unqualified (automotive-grade corrugated pipes require black spots with a diameter ≤0.1mm) corrugated pipes for scrapping. The host 8 is also connected to the drive motor 3, and the drive motor 3 can be automatically or manually controlled by the control program or control buttons installed on the host 8.

[0034] By installing the host 8 on the support plate 5, it is possible to easily control the drive motor 3 and display the black spot detection results.

[0035] Example 3:

[0036] like Figure 3 As shown, in this embodiment, the black spot detection component 7 includes a support rod 12 connected to an electric push rod 6. A support frame 13 is fixedly installed at the bottom end of the support rod 12. A rotating shaft 14 is rotatably installed on the support frame 13. The rotating shaft 14 is driven to rotate by a rotary motor 15 installed on the support frame 13. A rotating frame 16 is fixedly installed at the bottom end of the rotating shaft 14. A camera 17 is installed on the inner side of the rotating frame 16. The camera 17 is connected to an image analysis device for black spot image detection via wired or wireless communication. The image analysis device can be placed on the ground or in other places that do not affect its use. In use, the rotary motor 15 drives the rotating shaft 14 to rotate, thereby causing the camera 17 to rotate around the corrugated pipe. The electric push rod 6 can control the camera 17 to rise and fall. Therefore, the camera 17 can take 360-degree pictures of the corrugated pipe and send the images to the image analysis device for image analysis in order to determine whether there are black spots in the corrugated pipe, the size of the black spots, and their type.

[0037] By setting up a black spot detection assembly 7, which includes a support rod 12, a support frame 13, a rotating shaft 14, a rotary motor 15, a rotating frame 16, and a camera 17, it is possible to easily take pictures of the bellows and perform black spot detection.

[0038] Example 4:

[0039] like Figure 3 As shown, an air jet pipe 18 is installed on the rotating frame 16. One end of the air jet pipe 18 is aligned with the lens of the camera 17, and the other end is connected to an air pump. The air pump can be installed on the rotating frame 16 or in other positions that do not affect use. The air pump supplies air to the air jet pipe 18, and the high-pressure gas is sprayed and blown towards the camera 17 to clean the dust attached to the camera 17, which helps to improve the image quality and thus improve the accuracy of black spot detection.

[0040] By installing the jet pipe 18 on the rotating frame 16, it is easy to clean the dust adhering to the camera 17 and improve the accuracy of black spot detection.

[0041] Example 5:

[0042] like Figure 4 As shown, in this embodiment, two ring light sources 19 are installed on the rotating frame 16. The two ring light sources 19 surround the corrugated tube. The ring light sources 19 (color temperature 6000K, brightness adjustable) and polarizers eliminate glare on the surface of the metal corrugated tube, thereby improving image quality and accuracy of black spot detection.

[0043] By installing a ring light source 19 on the rotating frame 16 and using it in conjunction with a polarizer, glare on the surface of the metal bellows can be eliminated, which helps to improve image quality and the accuracy of black spot detection.

[0044] Example 6:

[0045] like Figure 1-2 As shown, multiple ventilation holes 9 are provided at the bottom of the workbench 1, the number of which matches the number of support tubes 4. Each ventilation hole 9 corresponds one-to-one with a support tube 4. A hot air blower 10 and a cold air blower 11 are installed at the bottom of the workbench 1. For the corrugated pipe to be tested, the hot air blower 10 blows hot air into the support tube 4 through the corresponding ventilation holes 9, raising the temperature of the corrugated pipe fitted onto the support tube 4. This increases the temperature difference between the black spots on the corrugated pipe and other locations, making imaging with the camera 17 more conducive to subsequent analysis. For corrugated pipes that have already been tested, the cold air blower 11 blows cold air into the support tube 4 through the corresponding ventilation holes 9 to cool the corrugated pipe, facilitating its removal.

[0046] By installing a hot air blower 10 and a cold air blower 11 at the bottom of the workbench 1, the corrugated pipe can be heated and cooled, which is beneficial to improving the imaging quality of the camera 17.

[0047] Working principle: During use, the drive motor 3 is manually or automatically controlled to rotate intermittently at a certain angle, causing each support tube 4 to rotate sequentially to the black spot detection component 7 and stay there for a certain period of time. Then, the black spot detection component 7 performs black spot detection on the corrugated tube. After the detection is completed, the next corrugated tube rotates to the black spot detection component 7... In this way, a nearly continuous detection process of the corrugated tube can be achieved. During the detection of the corrugated tube, the corrugated tube that has been detected can be replaced manually, so as not to delay the detection of other corrugated tubes, which helps to improve the detection efficiency of the equipment.

Claims

1. A bellows black spot detection apparatus characterized by, include: A workbench (1) is provided with a support mechanism and a testing mechanism; The support mechanism includes a rotary table (2) mounted on the workbench (1), the rotary table (2) being driven to rotate by a drive motor (3) mounted on the bottom of the workbench (1), and a plurality of support tubes (4) being mounted on the top of the rotary table (2), the corrugated pipe being sleeved on the support tubes (4); The detection mechanism is used to detect black spots on the corrugated pipe.

2. A bellows black spot detection device according to claim 1, characterized in that The detection mechanism includes a support plate (5) fixedly installed on the side of the workbench (1), an electric push rod (6) is installed on the support plate (5), and a black spot detection component (7) is installed at the bottom of the electric push rod (6).

3. A bellows black spot detection device according to claim 2, wherein, The black spot detection component (7) includes a support rod (12) fixedly connected to the electric push rod (6). A support frame (13) is fixedly installed at the bottom end of the support rod (12). A rotating shaft (14) is installed on the support frame (13). The rotating shaft (14) is driven to rotate by a rotary motor (15) installed on the support frame (13). A rotating frame (16) is fixedly installed at the bottom end of the rotating shaft (14). A camera (17) is installed on the inner side of the rotating frame (16).

4. A bellows black spot detection device according to claim 2, wherein The host (8) is mounted on the support plate (5), and the host (8) is connected to the black spot detection component (7) and the drive motor (3).

5. A bellows black spot detection device according to claim 3, wherein The jet pipe (18) is mounted on the rotating frame (16).

6. A bellows black spot detection device according to claim 3, wherein Two ring light sources (19) are installed on the rotating frame (16).

7. The bellows black spot detection device of claim 1, wherein The workbench (1) has multiple ventilation holes (9) at its bottom, and each ventilation hole (9) corresponds to a support tube (4).

8. The corrugated pipe black spot detection device according to claim 1, characterized in that, A hot air blower (10) and a cold air blower (11) are installed at the bottom of the workbench (1).

Images