Double-station airtight detection and intelligent marking integrated equipment for automobile pipeline

Abstract

The invention discloses automobile pipeline double-station airtightness detection and intelligent marking integrated equipment, and relates to the technical field of automobile pipeline machining, the automobile pipeline double-station airtightness detection and intelligent marking integrated equipment comprises a base, an operation table is mounted at the top end of the base, a first abutting block is arranged on one side of the top end of the operation table, and a first insertion block is mounted at one end of the first abutting block; in the using process, the gas pressure monitoring probe is matched with a pressure drop method adopted by a gas injection device to obtain pressure drop amount parameter data, and the pressure drop amount parameter data is compared with standard pressure drop amount parameter data; according to the method, the mode of judging the air tightness of the automobile pipeline in current air tightness detection and the mode of carrying out image analysis in cooperation with the image capturing device and the air tightness detection system are adopted to obtain the defect feature area, the two modes can be verified mutually, and therefore it is guaranteed that no detection error occurs in the automobile pipeline detection process.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile pipeline processing, in particular to automobile pipeline double-station air tightness detection and intelligent marking integrated equipment. BACKGROUND

[0002] The automobile pipeline is an important part for conveying gas, liquid and other working media in automobile systems. The product types are various, such as the chassis fuel pipeline for conveying fuel and the brake vacuum pipeline related to the automobile brake system. Since it is required to convey gas, liquid and other working media, the air tightness of each product needs to be detected in the production process, and the product type, production date, batch and other information are printed on the pipeline product after the detection.

[0003] In the prior art, the automobile pipeline double-station air tightness detection and intelligent marking integrated equipment is often used to inject gas to monitor the pressure change to obtain the conclusion of the current automobile pipeline air tightness detection. However, when the automobile pipeline has defects, it is difficult to quickly determine the defect area, and it is difficult to quickly match the corresponding process according to the defect area. Meanwhile, the error may occur in the monitoring of the pressure change, and when the precision of the gas pressure sensor is inaccurate, it is difficult for the operator to detect, and thus the air tightness detection error phenomenon occurs.

[0004] After retrieval, the Chinese patent document discloses an automobile pipeline finished product air tightness detection and coding integrated control system (publication number: CN119972561A). The application discloses an automobile pipeline finished product air tightness detection and coding integrated control system, which belongs to the technical field of automobile pipeline finished product detection. The system integrates the air tightness detection unit, the coding unit, the control system and the tooling station module into an integrated detection and coding equipment. The air tightness detection unit includes an air tightness detector, a pressure sensor and a control valve, and adopts the differential pressure method or the direct pressure method to detect the pipeline air tightness. The laser marking equipment of the coding unit marks the information on the qualified products and marks the unqualified products. The control system takes a programmable logic controller as the core to coordinate the cooperative work of each unit, and the touch screen realizes the man-machine interaction. The tooling station module has a batch fixing device, a pop-up module, an inductive switch and a prompt module to realize the classification processing and intelligent prompting. The system improves the production efficiency and quality, has the integration and intelligent advantages, and provides an efficient and reliable solution for automobile pipeline production enterprises. However, the following defects still exist:

[0005] Although the above-mentioned integrated control system for air tightness detection and coding of finished automobile pipelines has improved production efficiency and quality, and has the advantages of integration and intelligence, providing an efficient and reliable solution for automobile pipeline manufacturers, it still has the problem that when defects appear in the automobile pipelines, it is difficult to quickly determine the defective area, and thus it is difficult to quickly match the corresponding process according to the defective area. At the same time, errors may occur in monitoring pressure changes, and when the gas pressure sensor is inaccurate, it is difficult for the operator to detect it, which in turn leads to air tightness detection errors. Summary of the Invention

[0006] The purpose of the present invention is to provide an integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines, so as to solve the problem raised in the above background technology that when defects appear in automobile pipelines, it is difficult to quickly determine the defective area, and then it is difficult to quickly match the corresponding process according to the defective area. At the same time, errors may occur in monitoring pressure changes, and when the gas pressure sensor has inaccurate accuracy, it is difficult for the operator to detect it, which leads to the occurrence of airtightness detection errors.

[0007] To achieve the above objectives, the present invention provides the following technical solution: integrated equipment for dual-station airtightness testing and intelligent marking of automotive pipelines, comprising a base, an operating table installed at the top of the base, a first resistance block provided on one side of the top of the operating table, and a first plug-in block installed at one end of the first resistance block, a gas pressure monitoring probe installed inside one end of the first plug-in block, a second resistance block installed on the other side of the top of the operating table, a second plug-in block installed at the end of the second resistance block corresponding to the first plug-in block, a gas injection device installed at the other end of the second resistance block, and an output end of the gas injection device passing through the interior of one end of the second plug-in block, a movable sleeve movably connected to the outer wall of the top of the operating table, and a connecting frame installed at the top of the movable sleeve, a guide rail installed on the inner side wall of the connecting frame, a plurality of guide sliders movably connected to the inner part of the guide slide rail, one end of each guide slider being installed with an image capture device, an electromagnetic rail installed on the outer wall of the connecting frame, an electromagnetic slider movably connected to the inner part, and a micro laser marking device installed at one end of the electromagnetic slider via a connecting frame.

[0008] Preferably, an adjustable bracket is installed at the front end of the base, and a display device is installed at the other end of the adjustable bracket, the display device is electrically connected to the airtightness detection system, and the airtightness detection system is electrically connected to the gas pressure monitoring probe and the image capture device.

[0009] Preferably, a column is installed at one end of the first plug-in block away from the first plug-in block, and the bottom end of the column is connected to the top of the operating table, the bottom end of the second interference block is connected to the top of the outer flexible tube, and the bottom end of the outer flexible tube is connected to the top of the operating table.

[0010] Preferably, an inner flexible tube is installed inside the outer flexible tube, and a main flexible steel wire is installed inside the inner flexible tube, and a plurality of auxiliary flexible steel wires are installed between the outer side wall and the inner side wall of the inner flexible tube.

[0011] Preferably, the outer side walls of the first plug-in block and the second plug-in block are both installed with sealing balloons, and one end of the sealing balloon is connected to a delivery tube, and the other end of the delivery tube is connected to the output end of the air pump.

[0012] Preferably, a connecting block is installed at the bottom end of the movable sleeve, and a transmission screw sleeve is installed through the interior of the connecting block, and a connecting screw is meshedly connected through the interior of the transmission screw sleeve. The connecting screw is rotatably connected to the bottom end of the operating table, and one end of the connecting screw is transmission-connected to the output end of the drive motor.

[0013] Preferably, the inner side walls of the guide rails are all installed with magnetic sheets, and the outer side walls of the magnetic sheets are in contact with the outer side walls of the magnetic blocks, and the magnetic blocks are embedded in one end of the guide slide.

[0014] Preferably, an installation cavity is installed inside the other end of the guide slider, and a installation block is inserted into the installation cavity, one end of the installation block is connected to one end of the image capture device, and first interference protrusions are installed on the outer walls of both sides of the installation block at equal intervals, and the outer wall of the first interference protrusion conflicts with the outer wall of the second interference protrusion, and the second interference protrusions are installed on the outer wall of one side of the flexible sheet at equal intervals, and the flexible sheet is symmetrically installed inside the installation cavity.

[0015] Preferably, the airtightness detection system includes a data acquisition module, an image analysis module and a marking position confirmation module.

[0016] The data acquisition module is used to collect pressure drop parameter data obtained by the pressure drop method adopted by the gas pressure monitoring probe and the gas injection device, and compare the pressure drop parameter data with the standard pressure drop parameter data to determine the air tightness of the automobile pipeline currently being tested;

[0017] The image analysis module is used to obtain image data of the outer surface of the automobile pipe through a plurality of image capture devices, analyze the image data of the outer surface of the automobile pipe, obtain all defect points on the outer surface of the automobile pipe, and combine the image data of the outer surface of the automobile pipe containing defect points;

[0018] The function of the marking position confirmation module is to determine the area of ​​the current standard position of the automobile pipeline according to the standard position characteristics required for marking the automobile pipeline, and generate control instructions to complete the control of the electromagnetic slide rail, electromagnetic slider, micro laser marking device and drive motor.

[0019] Preferably, the specific steps of the image analysis module acquiring all defect points on the outer surface of the automobile pipeline are:

[0020] S1: First, control the movable sleeve and the connecting frame to move at a uniform speed through the control panel;

[0021] S2: dynamically capturing image data of an outer surface of the automobile pipeline of the automobile pipeline by a plurality of image capturing devices;

[0022] S3: The image analysis module receives the image data of the outer surface of the automobile pipeline and completes preprocessing;

[0023] S4: extracting defect features from the pre-processed image data of the outer surface of the automobile pipeline;

[0024] S4.1: Using the Hough transform recognition algorithm, edge detection is used to extract continuous lines to obtain crack defect features;

[0025] S4.2: Using the connected domain analysis algorithm, the pinhole defect features are obtained by extracting circular and elliptical regions after threshold segmentation.

[0026] S4.3: Using the regional grayscale analysis algorithm, the welding defect characteristics are obtained by extracting the grayscale mean of the welding area and completing the calculation;

[0027] S5: The acquired defect features are all three-dimensionally located to obtain detailed coordinate data.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. During use, the present invention uses a gas pressure monitoring probe in conjunction with the pressure drop method adopted by the gas injection device to obtain pressure drop parameter data, and compares the pressure drop parameter data with the standard pressure drop parameter data to determine the air tightness of the automobile pipeline currently being tested. In addition, the image capture device and the air tightness detection system are used to perform image analysis to obtain defect feature areas. The two can verify each other, thereby ensuring that no detection errors occur during the automobile pipeline inspection process.

[0030] 2. The present invention uses an airtightness detection system during use. In this way, when the detected automobile pipeline has defects that affect the airtightness, the relevant position parameters can be accurately obtained. According to the position parameters, the processing area can be further obtained, which provides convenience for subsequent improvements. At the same time, the actual position parameters of the marking area can be intelligently obtained based on the analysis of image data, so that the micro laser marking device can accurately complete the laser marking operation.

[0031] 3. The present invention is highly flexible when performing automobile pipeline inspection operations. It can adapt to automobile pipelines of different shapes and sizes. At the same time, it has good sealing performance, which can improve the accuracy of air tightness detection. At the same time, the dual stations of air tightness detection and marking operations are integrated into one station, which greatly optimizes work efficiency and improves practicality and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the assembled parts of the column, the first abutment block, the first plug-in block and the gas pressure monitoring probe in the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the assembled parts of the second abutment block, the second plug-in block, the gas injection device and the sealing balloon in the present invention;

[0035] Figure 4 Schematic diagram of the cross-sectional structure of the flexible pipe in the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the combined parts of the movable sleeve, the connecting block, the transmission screw sleeve and the connecting frame in the present invention;

[0037] Figure 6 This is a schematic diagram of the disassembled parts structure of the guide slider, magnetic block, mounting cavity, mounting block and image capture device in the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of the combined parts of the electromagnetic slide rail, electromagnetic slider, connecting frame and micro laser marking device in the present invention;

[0039] Figure 8 This is a schematic diagram of the parts structure of the operating table in the present invention when viewed from above;

[0040] Figure 9 Schematic diagram of the modular parts structure of the airtightness detection system of the present invention;

[0041] Figure 10 This is a schematic diagram of the specific steps for the image analysis module in the present invention to obtain all defect points on the outer surface of the automobile pipeline.

[0042] In the figure: 1. base; 2. adjustable bracket; 3. display device; 4. operating table; 5. control panel; 6. column; 7. first contact block; 8. first plug-in block; 9. gas pressure monitoring probe; 10. outer flexible tube; 11. inner flexible tube; 12. main flexible steel wire; 13. auxiliary flexible steel wire; 14. second contact block; 15. second plug-in block; 16. gas injection device; 17. sealing balloon; 18. delivery tube; 19. movable sleeve; 20. Connecting block; 21. Transmission screw sleeve; 22. Connecting screw; 23. Driving motor; 24. Connecting frame; 25. Guide rail; 26. Magnetic sheet; 27. Guide slider; 28. Magnetic block; 29. ​​Mounting cavity; 30. Mounting block; 31. Image capture device; 32. First contact protrusion; 33. Second contact protrusion; 34. Flexible sheet; 35. Electromagnetic rail; 36. Electromagnetic slider; 37. Connecting frame; 38. Micro laser marking device. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0044] Example 1

[0045] See also Figures 1-8 The present invention provides an integrated equipment for double-station airtightness detection and intelligent marking of automobile pipelines, including a base 1, a top of the base 1 is fixedly connected to an operating table 4, a top of the operating table 4 is fixedly connected to a control panel 5, and the control panel 5 is controlled and connected with a gas pressure monitoring probe 9, a gas injection device 16, an electromagnetic slide rail 35, an electromagnetic slider 36, a micro laser marking device 38 and an image capture device 31.

[0046] By setting up the control panel 5, during use, the operator operates the control panel 5 to control the gas pressure monitoring probe 9, the gas injection device 16, the electromagnetic slide rail 35, the electromagnetic slider 36, the micro laser marking device 38 and the image capture device 31 to perform corresponding operation steps.

[0047] The top end of the base 1 is fixedly connected with a "L" shaped column 6, and one end of the column 6 is fixedly connected with a first contact block 7, one end of the first contact block 7 is fixedly connected with a first plug-in block 8, a gas pressure monitoring probe 9 is fixedly connected in the first plug-in block 8, the other side of the top end of the base 1 is fixedly connected with an outer flexible tube 10, and one end of the outer flexible tube 10 is fixedly connected with a second contact block 14, one end of the second contact block 14 corresponding to the first plug-in block 8 is fixedly connected with a second plug-in block 15, the second plug-in block 15 and the second contact block 14 are fixedly connected with a gas injection device 16, and the output end of the gas injection device 16 is in the inside of one end of the second plug-in block 15, the outer side wall of the first plug-in block 8 and the second plug-in block 15 is fixedly connected with a sealing balloon 17 of inflation structure, one end of the sealing balloon 17 is connected with a conveying pipe 18, and the other end of the conveying pipe 18 is connected with the output end of the gas pump.

[0048] In the air tightness detection of the automobile pipeline, one end of the automobile pipeline is plugged into the outside of the first plug-in block 8, and the gas pump is controlled to output work, the sealing balloon 17 connected with the first plug-in block 8 is inflated through the conveying pipe 18, the sealing balloon 17 is inflated, one end of the automobile pipeline is sealed, and one end of the automobile pipeline is limited by the contact force, then the second plug-in block 15 is inserted into the other end of the automobile pipeline, the other end of the automobile pipeline is sealed and limited by the inflation of the sealing balloon 17, in this way, different sizes of automobile pipelines can be quickly limited and sealed, the work efficiency is improved, and the limitation is reduced, in the detection process of the automobile pipeline, the pressure drop method is used to obtain the pressure drop parameter data by the gas pressure monitoring probe 9 cooperating with the gas injection device 16, the pressure drop parameter data is compared with the standard pressure drop parameter data to judge the air tightness of the current air tightness detection automobile pipeline.

[0049] The inside of the outer flexible tube 10 is fixedly connected with an inner flexible tube 11, the inside of the inner flexible tube 11 is fixedly connected with a main flexible steel wire 12, the main flexible steel wire 12 is composed of multiple flexible steel wires, and a plurality of auxiliary flexible steel wires 13 are fixedly connected between the outer side wall of the inner flexible tube 11 and the inner side wall of the inner flexible tube 11 at equal intervals.

[0050] When connected with the other end of the automobile pipeline, the outer flexible tube 10 can be bent freely, so that the second contact block 14 and the second plug-in block 15 can be positioned relative to the other end of the automobile pipeline, and after bending adjustment, the outer flexible tube 10 can be well limited because the main flexible steel wire 12 and the auxiliary flexible steel wire 13 are arranged in the inside of the outer flexible tube 10, in this way, when the automobile pipeline port is connected and sealed, and air tightness detection is performed, excellent adjustment effect can be achieved, and the limitation of the device in use process for detecting different shapes of automobile pipelines is further avoided.

[0051] The top outer wall of the base 1 is provided with a movable sleeve 19, and the bottom end of the movable sleeve 19 is fixedly connected to a connecting block 20, and a transmission screw sleeve 21 is fixedly connected to the inside of the connecting block 20, and a connecting screw 22 is meshedly connected to the inside of the transmission screw sleeve 21. The rotation of the connecting screw 22 is connected to the bottom end of the operating table 4, and one end of the connecting screw 22 is fixedly connected to the output end of the drive motor 23. The connecting block 20, the transmission screw sleeve 21, the connecting screw 22 and the drive motor 23 are all inside the top of the base 1.

[0052] During use, when performing air tightness testing on automobile pipelines and laser marking on automobile pipelines, the drive motor 23 can be used to output operations, drive the connecting screw 22 to rotate forward or reverse, and then the connecting screw 22 drives the meshing transmission screw sleeve 21 to move, so that the transmission screw sleeve 21 drives the movable sleeve 19 and the components above the movable sleeve 19 to move.

[0053] The top of the movable sleeve 19 is fixedly connected to a connecting frame 24 with a circular structure, and the inner wall of the connecting frame 24 is fixedly connected to a guide rail 25 with a circular structure. The inner wall of the guide rail 25 is inlaid with a magnetic sheet 26, and the inner part of the guide rail 25 is movably connected to a plurality of guide sliders 27. The inner part of the guide slider 27 close to the end of the magnetic sheet 26 is inlaid with a magnetic block 28. The outer wall of the magnetic block 28 is in contact with the magnetic sheet 26 and is magnetically attracted. The guide slider 27 is away from the magnetic sheet. An installation cavity 29 is installed inside one end of the block 28, and a flexible sheet 34 is symmetrically fixedly connected to the inside of the installation cavity 29, and the corresponding outer wall of the flexible sheet 34 is fixedly connected with a second interference protrusion 33 at equal intervals. The outer wall of the second interference protrusion 33 conflicts with the outer wall of the first interference protrusion 32, and the first interference protrusion 32 is fixedly connected to the outer walls on both sides of the installation block 30 at equal intervals. The installation block 30 is inserted into the inside of one end of the installation cavity 29, and the installation block 30 is fixedly connected to the top of the image capture device 31.

[0054] The image data of the outer surface of the automobile pipeline is obtained by the image capture device 31, and the position of the image capture device 31 can be adjusted by moving the guide slider 27 inside the guide slide rail 25 according to actual usage requirements. In this way, the image capture device 31 can capture the image data of the outer surface of the automobile pipeline of different automobile pipelines without limitation. At the same time, after adjustment, the outer wall of the magnetic block 28 is fitted with the magnetic sheet 26, and the guide slider 27 is limited by magnetic attraction. At the same time, the image capture device 31 is inserted into the mounting cavity 29 through the mounting block 30 connected to the top, and the outer wall of the second interference protrusion 33 is in conflict with the outer wall of the first interference protrusion 32 to limit the mounting block 30. In this way, it is convenient to separate the image capture device 31 during operation for maintenance and repair, etc., which improves practicality and abandons traditional fixing methods such as bolts.

[0055] The outer wall of the connecting frame 24 is fixedly connected to an electromagnetic slide rail 35 with an arc-shaped structure, and the interior of the electromagnetic slide rail 35 is slidably connected to an electromagnetic slider 36. One end of the electromagnetic slider 36 is fixedly connected to a connecting frame 37, and the interior of the connecting frame 37 is fixedly connected to a micro laser marking device 38. The electromagnetic slide rail 35 includes at least an electromagnet, a power supply and a controller, the electromagnetic slider 36 includes at least a magnetic material and a position sensor, and the micro laser marking device 38 includes a laser generating component and a beam control component.

[0056] During use, according to the actual position parameters of the laser marking obtained, the electromagnetic slider 36 cooperates with the micro laser marking device 38 to drive the micro laser marking device 38 to move in an arc, so that the micro laser marking device 38 corresponds to the marking area, and then the micro laser marking device 38 completes the marking operation.

[0057] The specific usage process of this embodiment is:

[0058] First, clamp the automobile pipeline that needs to be tested for airtightness. During the airtightness test, plug one end of the automobile pipeline into the outside of the first plug-in block 8, and control the air pump output operation to inflate the sealing balloon 17 connected to the first plug-in block 8 through the delivery pipe 18, so that the sealing balloon 17 expands, seals one end of the automobile pipeline, and limits the position of the one end of the automobile pipeline through the resistance force;

[0059] Moreover, when connecting to the other end of the automobile pipeline, the outer flexible tube 10 can be bent freely so that the second abutment block 14 and the second plug-in block 15 can be aligned with the other end of the automobile pipeline. Then, the second plug-in block 15 is inserted into the other end of the automobile pipeline, and the sealing balloon 17 is expanded to seal and limit the other end of the automobile pipeline.

[0060] Secondly, the pressure drop parameter data is obtained by the pressure drop method adopted by the gas pressure monitoring probe 9 and the gas injection device 16. The pressure drop parameter data is compared with the standard pressure drop parameter data to determine the air tightness of the automobile pipeline currently being tested;

[0061] Afterwards, when performing air tightness testing on automobile pipelines or laser marking on automobile pipelines, the drive motor 23 can be used to output operations, drive the connecting screw 22 to rotate forward or reverse, and then the connecting screw 22 drives the meshing transmission screw sleeve 21 to move, so that the transmission screw sleeve 21 drives the movable sleeve 19 and the components above the movable sleeve 19 to move;

[0062] Then, in the airtightness detection process, the image capturing device 31 acquires the automobile pipeline outer surface image data, and the position of the image capturing device 31 is adjusted by moving the guide slider 27 in the guide rail 25, so that the image capturing device 31 has no limitation when capturing the automobile pipeline outer surface image data of different automobile pipelines, and after adjustment, the outer wall of the magnetic attraction block 28 is attached to the magnetic attraction piece 26, and the guide slider 27 is limited by magnetic attraction, and the image capturing device 31 is inserted into the mounting cavity 29 through the mounting block 30 connected to the top, and the outer wall of the second abutting protrusion 33 is abutted with the outer wall of the first abutting protrusion 32, and the mounting block 30 is limited, and in this way, the image capturing device 31 can be separated for maintenance and repair during operation;

[0063] Finally, according to the obtained laser marking actual position parameter, the electromagnetic slider 36 and the micro laser marking device 38 are driven to make a circular arc movement, so that the micro laser marking device 38 corresponds to the marking area, and then the marking work is completed through the micro laser marking device 38, so that the automobile pipeline double-station airtightness detection and intelligent marking integrated equipment is used to complete the marking work.

[0064] It should be noted that the present application is an automobile pipeline double-station airtightness detection and intelligent marking integrated equipment, and the components are general standard parts or components known to those skilled in the art, and the structure and principle are known to those skilled in the art through technical manual or through conventional experimental methods, and in the idle place of the device, all the above-mentioned electrical devices, power elements, electrical devices and the adapted monitoring computer and power supply are connected by wires, and the specific connection means should be referred to the above-mentioned working principle, and the electrical devices are connected in sequence, and the detailed connection means is a known technology in the art.

[0065] Example 2

[0066] Please refer to Figures 1-10 The present application provides an automobile pipeline double-station airtightness detection and intelligent marking integrated equipment, which comprises a base 1, an adjustable support 2 fixedly connected to the front end of the base 1, and a display device 3 fixedly connected to the rear end of the adjustable support 2, the display device 3 being electrically connected with an airtightness detection system, and the airtightness detection system being electrically connected with a gas pressure monitoring probe 9 and an image capturing device 31.

[0067] By using the display device 3, the state of detecting the airtightness of the automobile pipeline can be reflected in real time, and the image information captured by the image capturing device 31 can be displayed, and during use, the display device 3 can be adaptively adjusted through the adjustable support 2 according to the use requirements.

[0068] The airtightness detection system includes a data acquisition module, an image analysis module and a marking position confirmation module.

[0069] The function of the data acquisition module is to collect the pressure drop parameter data obtained by the pressure drop method adopted by the gas pressure monitoring probe 9 and the gas injection device 16, compare the pressure drop parameter data with the standard pressure drop parameter data, and determine the air tightness of the automobile pipeline currently being tested;

[0070] The image analysis module is used to obtain image data of the outer surface of the automobile pipe through a plurality of image capture devices 31, analyze the image data of the outer surface of the automobile pipe, obtain all defect points on the outer surface of the automobile pipe, and combine the image data of the outer surface of the automobile pipe containing defect points.

[0071] The image capturing devices 31 are all industrial cameras, and the image capturing devices 31 have a pixel count of ≥20 million, and a frame rate parameter of the image capturing devices 31 is 60FPS-80FPS.

[0072] The image capture device 31 obtains the image data of the outer surface of the automobile pipeline and then eliminates the ambient light interference through Gaussian filtering and median filtering, and ensures that the geometric distortion of the pipeline image is ≤0.5% through distortion correction and perspective transformation. Then, through contrast stretching and histogram equalization, the grayscale difference between the defects and the background is highlighted. Finally, the automobile pipeline area is separated from the image data of the outer surface of the automobile pipeline to eliminate background interference.

[0073] The function of the marking position confirmation module is to determine the area of ​​the current standard position of the automobile pipeline according to the standard position characteristics required for marking the automobile pipeline, and generate control instructions to complete the control of the electromagnetic slide 35, the electromagnetic slider 36, the micro laser marking device 38 and the drive motor 23.

[0074] The specific steps for the image analysis module to obtain all defect points on the outer surface of the automobile pipeline are as follows:

[0075] S1: First, the control panel 5 controls the movable sleeve 19 and the connecting frame 24 to move at a uniform speed;

[0076] S2: Dynamically capturing image data of the outer surface of the automobile pipeline of the automobile pipeline by a plurality of image capturing devices 31;

[0077] S3: The image analysis module receives the image data of the outer surface of the automobile pipeline and completes preprocessing;

[0078] S4: extracting defect features from the pre-processed image data of the outer surface of the automobile pipeline;

[0079] S4.1: Using the Hough transform recognition algorithm, edge detection is used to extract continuous lines to obtain crack defect features;

[0080] S4.2: Using the connected domain analysis algorithm, the pinhole defect features are obtained by extracting circular and elliptical regions after threshold segmentation.

[0081] S4.3: Using the regional grayscale analysis algorithm, the welding defect characteristics are obtained by extracting the grayscale mean of the welding area and completing the calculation;

[0082] S5: The acquired defect features are all three-dimensionally located to obtain detailed coordinate data.

[0083] In S1 , the control panel 5 controls the driving motor 23 to output at a uniform speed, so that the screw transmission structure composed of the transmission screw sleeve 21 and the connecting screw 22 drives the movable sleeve 19 and the connecting frame 24 to move at a uniform speed.

[0084] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated equipment for double-station airtightness detection and intelligent marking of automobile pipelines, comprising a base (1), characterized in that: An operating table (4) is installed at the top of the base (1), a first contact block (7) is provided on one side of the top of the operating table (4), and a first plug-in block (8) is installed at one end of the first contact block (7), a gas pressure monitoring probe (9) is installed inside one end of the first plug-in block (8), a second contact block (14) is installed at the other side of the top of the operating table (4), a second plug-in block (15) is installed at the end of the second contact block (14) corresponding to the first plug-in block (8), a gas injection device (16) is installed at the other end of the second contact block (14), and the output end of the gas injection device (16) passes through one end of the second plug-in block (15). Inside the end, the top outer wall of the operating table (4) is movably connected to a movable sleeve (19), and the top of the movable sleeve (19) is installed with a connecting frame (24), the inner side wall of the connecting frame (24) is installed with a guide rail (25), the inner side of the guide rail (25) is movably connected to a plurality of guide sliders (27), one end of each guide slider (27) is installed with an image capture device (31), the outer side wall of the connecting frame (24) is installed with an electromagnetic rail (35), the inner side is movably connected to an electromagnetic slider (36), and one end of the electromagnetic slider (36) is installed with a micro laser marking device (38) through a connecting frame (37).

2. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 1 is characterized in that: An adjustable bracket (2) is installed at the front end of the base (1), and a display device (3) is installed at the other end of the adjustable bracket (2). The display device (3) is electrically connected to the airtightness detection system, and the airtightness detection system is electrically connected to the gas pressure monitoring probe (9) and the image capture device (31).

3. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 1 is characterized in that: A column (6) is installed at one end of the first plug-in block (8) away from the first plug-in block (8), and the bottom end of the column (6) is connected to the top end of the operating table (4), the bottom end of the second interference block (14) is connected to the top end of the external flexible tube (10), and the bottom end of the external flexible tube (10) is connected to the top end of the operating table (4).

4. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 3 is characterized by: An inner flexible tube (11) is installed inside the outer flexible tube (10), and a main flexible steel wire (12) is installed inside the inner flexible tube (11). A plurality of auxiliary flexible steel wires (13) are installed between the outer side wall of the inner flexible tube (11) and the inner side wall of the inner flexible tube (11).

5. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 1 is characterized in that: The outer side walls of the first plug-in block (8) and the second plug-in block (15) are both installed with sealing balloons (17), and one end of the sealing balloon (17) is connected to a delivery tube (18), and the other end of the delivery tube (18) is connected to the output end of the air pump.

6. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 1 is characterized by: The bottom end of the movable sleeve (19) is installed with a connecting block (20), and a transmission screw sleeve (21) is installed through the interior of the connecting block (20), and a connecting screw (22) is connected and meshed through the interior of the transmission screw sleeve (21). The connecting screw (22) is rotatably connected to the bottom end of the operating table (4), and one end of the connecting screw (22) is transmission-connected to the output end of the drive motor (23).

7. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 1 is characterized in that: The inner side walls of the guide rails (25) are all equipped with magnetic sheets (26), and the outer side walls of the magnetic sheets (26) are in contact with the outer side walls of the magnetic blocks (28), and the magnetic blocks (28) are embedded in one end of the guide slide block (27).

8. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 1 is characterized in that: The other end of the guide slider (27) is internally installed with a mounting cavity (29), and a mounting block (30) is inserted into the interior of the mounting cavity (29), one end of the mounting block (30) is connected to one end of the image capture device (31), and first interference protrusions (32) are evenly installed on the outer walls of both sides of the mounting block (30), and the outer wall of the first interference protrusion (32) conflicts with the outer wall of the second interference protrusion (33), and the second interference protrusion (33) is evenly installed on the outer wall of one side of the flexible sheet (34), and the flexible sheet (34) is symmetrically installed inside the mounting cavity (29).

9. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 2 is characterized in that: The airtightness detection system includes a data acquisition module, an image analysis module and a marking position confirmation module. The function of the data acquisition module is to collect pressure drop parameter data obtained by the pressure drop method adopted by the gas pressure monitoring probe (9) in conjunction with the gas injection device (16), compare the pressure drop parameter data with the standard pressure drop parameter data, and judge the air tightness of the automobile pipeline currently being tested; The image analysis module is used to obtain image data of the outer surface of the automobile pipeline through a plurality of image capture devices (31), analyze the image data of the outer surface of the automobile pipeline, obtain all defect points on the outer surface of the automobile pipeline, and combine the image data of the outer surface of the automobile pipeline containing defect points; The function of the marking position confirmation module is to determine the area of ​​the current standard position of the automobile pipeline according to the standard position characteristics required for marking the automobile pipeline, and generate control instructions to complete the control of the electromagnetic slide rail (35), the electromagnetic slider (36), the micro laser marking device (38) and the drive motor (23).

10. The integrated equipment for dual-station airtightness detection and intelligent marking of automobile pipelines according to claim 9, characterized in that: The specific steps of the image analysis module to obtain all defect points on the outer surface of the automobile pipeline are: S1: First, the control panel (5) is used to control the movable sleeve (19) and the connecting frame (24) to move at a uniform speed; S2: Dynamically capturing image data of the outer surface of the automobile pipeline of the automobile pipeline by a plurality of image capturing devices (31); S3: The image analysis module receives the image data of the outer surface of the automobile pipeline and completes preprocessing; S4: extracting defect features from the pre-processed image data of the outer surface of the automobile pipeline; S4.1: Using the Hough transform recognition algorithm, edge detection is used to extract continuous lines to obtain crack defect features; S4.2: Using the connected domain analysis algorithm, circular and elliptical regions are extracted after threshold segmentation to obtain pinhole defect features; S4.3: Using the regional grayscale analysis algorithm, the welding defect characteristics are obtained by extracting the grayscale mean of the welding area and completing the calculation; S5: The acquired defect features are all three-dimensionally located to obtain detailed coordinate data.

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