Defect image acquisition device for magnetic powder inspection

Abstract

The utility model discloses a defect image acquisition device for magnetic powder inspection, which belongs to the technical field of magnetic powder inspection devices and is characterized by comprising a magnetic powder inspection machine main body, and a defect image acquisition mechanism is arranged on the front side in the magnetic powder inspection machine main body. By means of the characteristic that the mechanical arm can flexibly adjust the positions and angles of the industrial camera and the ultraviolet lamp, comprehensive covering of the surface of the locomotive round spring is achieved, the mechanical arm can accurately position all parts of the locomotive round spring, the problem that dead corner area defects are omitted due to view angle limitation in traditional manual observation is effectively avoided, and in actual detection, the mechanical arm and the industrial camera work cooperatively, and the detection efficiency is improved. Through auxiliary illumination of the ultraviolet lamp, the industrial camera can more clearly capture defect signs such as tiny magnetic traces on the surface of the locomotive round spring under irradiation of the ultraviolet lamp, the resolution ratio and the sensitivity of the industrial camera are far better than those of manual visual observation, and the detection accuracy and precision are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic particle flaw detection device, especially relates to a kind of defect image acquisition device for magnetic particle flaw detection. BACKGROUND

[0002] Magnetic particle flaw detector is the equipment that magnetization is inspected after being placed in working position to the machine car round spring to be detected, in traditional operation, operator places machine car round spring on the surface of roller, then uses lifting device, lifts roller and the machine car round spring on the surface, then the machine car round spring is positioned and magnetized, after magnetization, machine car round spring rotates on roller and sprays magnetic suspension liquid on its surface, then staff handholds ultraviolet lamp to observe whether there is magnetic mark on the surface of machine car round spring, if there is magnetic mark, the position of magnetic mark is photographed and kept.

[0003] The magnetic powder spraying pipe of the magnetic particle flaw detector of traditional structure is generally fixedly arranged above the bearing, although the magnetic powder can be sprayed on the bearing, but there is no corresponding recycling device after spraying, thereby causing serious waste and pollution.

[0004] The existing patent (publication number: CN208847693U) discloses a magnetic particle flaw detector, which can collect the magnetic suspension liquid flowing from the drainage plate and then pass it into the liquid storage tank again, so that the sprayed magnetic suspension liquid can be recycled for reuse, thereby avoiding excessive waste to some extent.

[0005] For the above problems, the existing patent provides a solution, but the traditional manual ultraviolet lamp visual observation method in the existing magnetic particle flaw detection process is greatly disturbed by working environment factors, which easily leads to missing defects in dead angle areas, and manual ultraviolet lamp visual observation needs to consume more time, and there are problems of machine part collapse, high temperature and other safety hazards during workshop operation.

[0006] Therefore, a defect image acquisition device for magnetic particle flaw detection is proposed. SUMMARY

[0007] The utility model aims at providing a kind of defect image acquisition device for magnetic particle flaw detection, can solve the traditional manual ultraviolet lamp visual observation method in the existing magnetic particle flaw detection process is greatly disturbed by working environment factors, which easily leads to missing defects in dead angle areas, and manual ultraviolet lamp visual observation needs to consume more time, and there are problems of machine part collapse, high temperature and other safety hazards during workshop operation.

[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of defect image acquisition device for magnetic particle flaw detection, including magnetic particle flaw detector main body, the front side of the inside of the magnetic particle flaw detector main body is provided with defect image acquisition mechanism.

[0009] The defect image acquisition mechanism comprises a moving structure arranged on the front side of the top of the magnetic particle flaw detector main body, a connecting plate is bolted to the bottom of the moving structure, a mechanical arm is bolted to the bottom of the connecting plate, and an industrial camera and an ultraviolet lamp are arranged on the rear side of the mechanical arm respectively.

[0010] Preferably, the moving structure comprises a flaw detector fixed plate bolted to the front side of the top of the magnetic particle flaw detector main body, and an aluminum profile is arranged on the top of the flaw detector fixed plate.

[0011] Preferably, a slide rail is bolted to the bottom of the flaw detector fixed plate, and the bottom of the slide rail is in an inner convex shape.

[0012] Preferably, a slide work surface is arranged on the bottom of the slide rail, and the bottom of the slide work surface is bolted to the top of the connecting plate.

[0013] Preferably, a lifting device is arranged on the front side in the magnetic particle flaw detector main body, and the lifting device is located at the bottom of the mechanical arm.

[0014] Preferably, a roller is arranged in the magnetic particle flaw detector main body, and a locomotive round spring is arranged on the top of the roller.

[0015] Preferably, magnetized clamping mechanisms are arranged on both sides in the magnetic particle flaw detector main body, the magnetized clamping mechanisms are located on the outer sides of the locomotive round spring, a magnetic suspension liquid spraying pipe is arranged on the rear side in the magnetic particle flaw detector main body, and the magnetic suspension liquid spraying pipe is located on the rear side of the locomotive round spring.

[0016] Preferably, a protection structure is arranged in the magnetic particle flaw detector main body, the protection structure comprises a support bolted to the top of the magnetic particle flaw detector main body, guide rods are bolted to both sides of the front side of the support, a safety door is slidably connected to the front side of the guide rods, and the safety door is located on the front sides of the magnetized clamping mechanisms and the locomotive round spring.

[0017] Compared with the prior art, the magnetic particle flaw detector has the beneficial effects that:

[0018] 1、The application realizes comprehensive coverage of the surface of the locomotive coil spring by setting a defect image acquisition mechanism, flexibly adjusting the position and angle of the industrial camera and the ultraviolet lamp with the aid of the mechanical arm, and accurately positioning the mechanical arm to each part of the locomotive coil spring, effectively avoiding the problem of missing dead angle area defects due to the limited view angle of traditional manual observation. In actual detection, the two work together, and after auxiliary lighting by the ultraviolet lamp, the industrial camera can capture the small magnetic marks and other defect signs on the surface of the locomotive coil spring more clearly under its irradiation. Its resolution and sensitivity far exceed manual visual observation, greatly improving detection accuracy and precision. At the same time, this way avoids the operation personnel working for a long time in the complex workshop environment with the ultraviolet lamp in hand, eliminates safety hazards, and protects personal safety.

[0019] 2、The application realizes rapid movement of the mechanical arm, the industrial camera and the ultraviolet lamp in the magnetic particle flaw detector main body through the movement structure, and after the locomotive coil spring completes magnetization and other preliminary preparations, image acquisition work can be quickly carried out. Compared with traditional manual observation and photography with an ultraviolet lamp one by one, the detection time is greatly shortened. The movement structure runs according to the preset trajectory and speed, efficiently completes the image acquisition task, and the automatic image acquisition process reduces the manual operation link, avoids the slow speed problem caused by unskilled or tired manual operation, can continuously and stably detect, and further improves the working efficiency of the overall detection process. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure diagram of the defect image acquisition device for magnetic particle flaw detection of the utility model.

[0021] Figure 2 It is the structure diagram of the magnetic particle flaw detector main body of the utility model.

[0022] Figure 3 It is the structure diagram of the protection structure of the utility model.

[0023] Figure 4 It is the plane schematic view of the magnetic particle flaw detector main body and the defect image acquisition mechanism of the utility model.

[0024] Figure 5 It is the structure diagram of the defect image acquisition mechanism of the utility model.

[0025] Figure 6 It is the structure diagram of the movement structure of the utility model.

[0026] In the figure, 1, magnetic particle flaw detector main body; 2, defect image acquisition mechanism; 201, moving structure; 2011, flaw detector fixed plate; 2012, aluminum profile; 2013, slide rail; 2014, slide working surface; 202, connecting plate; 203, mechanical arm; 204, industrial camera; 205, ultraviolet lamp; 3, lifting device; 4, roller; 5, magnetization clamping mechanism; 6, magnetic suspension liquid spraying pipe; 7, protection structure; 701, support; 702, guide rod; 703, safety door. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Please refer to Figures 1-6 The utility model provides technical scheme:

[0029] A kind of defect image acquisition device for magnetic particle flaw detection, including magnetic particle flaw detector main body 1, the front side in the inside of magnetic particle flaw detector main body 1 is provided with defect image acquisition mechanism 2.

[0030] Defect image acquisition mechanism 2 includes moving structure 201 being arranged at the top front side of magnetic particle flaw detector main body 1, the bottom of moving structure 201 is bolted with connecting plate 202, the bottom of connecting plate 202 is bolted with mechanical arm 203, the rear side of mechanical arm 203 is provided with industrial camera 204 and ultraviolet lamp 205 respectively.

[0031] In the embodiment: by setting the defect image acquisition mechanism 2, the moving structure 201 can drive the mechanical arm 203 to adjust the position flexibly, and the mechanical arm 203 can accurately control the industrial camera 204 and the ultraviolet lamp 205, so that it can reach every corner of the locomotive round spring, avoiding the problem of missing defects in the dead angle area caused by limited visual angle when manually holding the ultraviolet lamp 205 and visually observing. The industrial camera 204 can sensitively capture the small magnetic marks and other defect signs on the surface of the locomotive round spring with the assistance of the ultraviolet lamp 205. The resolution and sensitivity are significantly improved compared with manual observation, thereby greatly improving the accuracy of detection. At the same time, the stable connection of each structure ensures the stability of the equipment during detection, reduces the image blur or misjudgment caused by shaking and other factors, further enhances the reliability of the detection result, and in terms of detection efficiency and safety, the moving structure 201 endows the mechanical arm 203, the industrial camera 204 and the ultraviolet lamp 205 with the ability to move quickly, so that the images can be quickly collected after the locomotive round spring is magnetized, greatly reducing the detection time. The automatic acquisition process simplifies manual operation, overcomes the speed obstacles caused by unskilled or tired manual operation, ensures the continuous, stable and efficient development of detection work, and significantly improves work efficiency. More importantly, the operator does not need to hold the ultraviolet lamp 205 for a long time in the complex workshop environment, successfully avoids safety hazards, ensures personal safety, and optimizes the working environment.

[0032] Specifically, as shown in Figure 6 The moving structure 201 includes a flaw detector fixed plate 2011 bolted to the top front side of the magnetic particle flaw detector main body 1. The top of the flaw detector fixed plate 2011 is provided with an aluminum profile 2012.

[0033] Specifically, as shown in Figure 6 The bottom of the flaw detector fixed plate 2011 is bolted with a sliding table guide rail 2013, and the bottom of the sliding table guide rail 2013 is in an inner convex shape.

[0034] Specifically, as shown in Figure 6 The bottom of the sliding table guide rail 2013 is provided with a sliding table working surface 2014, and the bottom of the sliding table working surface 2014 is bolted with the top of the connecting plate 202.

[0035] In the embodiment: the solid connection plate 2011 is fixed to the front top side of the magnetic particle detector main body 1 by bolts, and the aluminum profile 2012 on the top significantly enhances the strength and stability of the overall structure, effectively resisting the risk of deformation during long-term use, laying a solid foundation for the continuous and accurate development of detection work. The concave-shaped slide rail 2013 at the bottom is closely matched with the slide working surface 2014, strictly restricting the movement path of the slide working surface 2014, so that it always smoothly slides along the preset trajectory, eliminating the positioning deviation of the industrial camera 204 and the ultraviolet lamp 205 caused by shaking or deviation, and effectively ensuring the accuracy of the image acquisition of the locomotive coil spring surface. The slide working surface 2014 is bolted to the connecting plate 202, so that the connecting plate 202 and the mechanical arm 203 connected thereto can achieve precise and stable horizontal displacement with the cooperation of the slide rail 2013 and the slide working surface 2014, enabling the industrial camera 204 and the ultraviolet lamp 205 to quickly and accurately cover all parts of the locomotive coil spring surface, greatly improving the image acquisition efficiency and detecting the locomotive coil spring from all directions, greatly enhancing the reliability and practicality of the entire detection device.

[0036] Specifically, as shown in Figure 1 , Figure 2 , the front side of the inside of the magnetic particle detector main body 1 is provided with a lifting device 3, and the lifting device 3 is located at the bottom of the mechanical arm 203.

[0037] Specifically, as shown in Figure 2 , the inside of the magnetic particle detector main body 1 is provided with a roller 4, and the top of the roller 4 is placed with a locomotive coil spring.

[0038] In the embodiment: by placing the locomotive coil spring to be detected on the roller 4 in the magnetic particle detector main body 1, starting the lifting device 3, and lifting the locomotive coil spring to an appropriate height, the locomotive coil spring is ensured to be in the best position during subsequent operations. The roller 4 supports the locomotive coil spring, enabling the locomotive coil spring to rotate smoothly during magnetization and detection, ensuring that all parts of the locomotive coil spring surface uniformly receive magnetization, magnetic suspension liquid spraying, and smooth shooting by the industrial camera 204, effectively promoting comprehensive and accurate detection of defects on the locomotive coil spring surface, and further improving the effectiveness and reliability of the detection.

[0039] Specifically, as shown in Figure 5 , both sides of the inside of the magnetic particle detector main body 1 are provided with a magnetizing clamping mechanism 5, and the magnetizing clamping mechanism 5 is located outside the locomotive coil spring. The rear side of the inside of the magnetic particle detector main body 1 is provided with a magnetic suspension liquid spraying pipe 6, and the magnetic suspension liquid spraying pipe 6 is located at the rear side of the locomotive coil spring.

[0040] Specifically, as shown in Figure 3As shown, the inside of the magnetic particle flaw detector main body 1 is provided with a protective structure 7, which includes a bracket 701 bolted to the top of the magnetic particle flaw detector main body 1, two guide rods 702 bolted to the front side of the bracket 701, a safety door 703 slidingly connected to the front side of the guide rod 702, and the safety door 703 located in front of the magnetizing clamping mechanism 5 and the locomotive round spring.

[0041] In this embodiment: through the precise positioning of the magnetizing clamping mechanism 5 outside the locomotive round spring, the locomotive round spring can be magnetized stably and efficiently, prompting the formation of a uniform magnetic field inside, attracting magnetic powder to gather at the defect, greatly enhancing the detection capability of the industrial camera 204 on the defect, effectively improving the detection sensitivity and accuracy, the magnetic suspension spraying pipe 6 is located inside the main body rear side, which can spray magnetic suspension to the surface of the locomotive round spring in time, and the magnetic suspension filled in the surface defect is more easily captured by the camera under ultraviolet light, which effectively improves the detection effect, in the protective structure 7, the bracket 701 is firmly connected with the top of the magnetic particle flaw detector main body 1, the guide rod 702 bolted to the front side of the bracket 701 and the slidingly connected safety door 703 constitute a solid protective barrier, and the safety door 703 is located in front of the magnetizing clamping mechanism 5 and the locomotive round spring, which can prevent the magnetic suspension from splashing when spraying the magnetic suspension, avoid affecting the operator, at the same time, ensure the stability of the detection environment, further ensure the safety and efficiency of the detection process.

[0042] Working principle: when the defect image acquisition device detects the defect of the locomotive round spring, first connect the whole set of acquisition device power supply, place the locomotive round spring to be detected on the roller 4 of the magnetic particle flaw detector main body 1, the operator starts the lifting device 3 through the control panel, so that the locomotive round spring is lifted to an appropriate height, in this process, the lifting device 3 and other components such as the mechanical arm 203 are not interfered, which ensures the smooth process, then close the safety door 703, the magnetizing clamping mechanism 5 magnetizes the locomotive round spring, generates a uniform magnetic field, which is convenient for magnetic powder to gather at the defect, at the same time, the magnetic suspension spraying pipe 6 sprays magnetic suspension in time, fills the surface defect of the locomotive round spring, then the moving structure 201 starts, the flaw detector fixed plate 2011 and the aluminum profile 2012 stable support, the slide rail 2013 and the slide working surface 2014 cooperatively guide the connecting plate 202 and the mechanical arm 203 to move horizontally and accurately, the mechanical arm 203 drives the industrial camera 204 and the ultraviolet lamp 205 to the appropriate position above the locomotive round spring according to the preset program, the ultraviolet lamp 205 irradiates to make the magnetic suspension filled in the defect clearly visible under ultraviolet light, the industrial camera 204 quickly and accurately captures the image of the locomotive round spring surface and transmits it to the control system for analysis and storage, after the image acquisition is completed, the system stops, the mechanical arm 203 automatically returns to the initial position, the system saves the image data, during which, the opening and closing speed of the top cover window can be adjusted through the air cylinder upper exhaust throttle valve, the image acquisition speed and exposure time can be set by using the parameter adjustment function of the control panel, to ensure the optimal image quality.

[0043] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A defect image acquisition device for magnetic particle inspection, comprising a magnetic particle inspection machine body (1), characterized in that: The front side of the main body (1) of the magnetic particle flaw detector is provided with a defect image acquisition mechanism (2); the defect image acquisition mechanism (2) includes a movable structure (201) located on the top front side of the main body (1) of the magnetic particle flaw detector, a connecting plate (202) is bolted to the bottom of the movable structure (201), a robotic arm (203) is bolted to the bottom of the connecting plate (202), and an industrial camera (204) and an ultraviolet lamp (205) are respectively provided on the rear side of the robotic arm (203).

2. The defect image acquisition device for magnetic particle inspection according to claim 1, characterized in that: The movable structure (201) includes a flaw detector fixing plate (2011) bolted to the front top of the main body (1) of the magnetic particle flaw detector, and an aluminum profile (2012) is provided on the top of the flaw detector fixing plate (2011).

3. The defect image acquisition device for magnetic particle inspection according to claim 2, characterized in that: The bottom of the flaw detector mounting plate (2011) is bolted with a slide rail (2013), and the bottom of the slide rail (2013) is convex.

4. A defect image acquisition device for magnetic particle inspection according to claim 3, characterized in that: The bottom of the slide rail (2013) is provided with a slide working surface (2014), and the bottom of the slide working surface (2014) is bolted to the top of the connecting plate (202).

5. A defect image acquisition device for magnetic particle inspection according to claim 1, characterized in that: A lifting device (3) is provided on the front side inside the main body (1) of the magnetic particle flaw detector, and the lifting device (3) is located at the bottom of the robotic arm (203).

6. The defect image acquisition device for magnetic particle inspection according to claim 1, characterized in that: The magnetic particle flaw detector body (1) is equipped with rollers (4) inside, and a locomotive round spring is placed on the top of the rollers (4).

7. The defect image acquisition device for magnetic particle inspection according to claim 1, characterized in that: Magnetizing clamping mechanisms (5) are provided on both sides of the main body (1) of the magnetic particle flaw detector. The magnetizing clamping mechanisms (5) are located on the outside of the locomotive coil spring. A magnetic suspension spray pipe (6) is provided on the rear side of the main body (1) of the magnetic particle flaw detector. The magnetic suspension spray pipe (6) is located on the rear side of the locomotive coil spring.

8. A defect image acquisition device for magnetic particle inspection according to claim 7, characterized in that: The magnetic particle flaw detector body (1) is provided with a protective structure (7) inside. The protective structure (7) includes a bracket (701) bolted to the top of the magnetic particle flaw detector body (1). Guide rods (702) are bolted to both sides of the front side of the bracket (701). A safety door (703) is slidably connected to the front side of the guide rod (702). The safety door (703) is located in front of the magnetized clamping mechanism (5) and the locomotive coil spring.

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