An immersion magnetization detection device

Abstract

The present invention discloses an immersion magnetization detection device, belonging to the field of magnetization detection. An immersion magnetization detection device includes a frame and an immersion tank, and further includes: a conveying part arranged on the frame for conveying workpieces to be detected; a detection driving part arranged on the conveying part, and the detection driving part can drive the workpiece to reciprocate up and down along the immersion tank and magnetize the workpiece; wherein, a feeding part is arranged on the conveying part, and the feeding part is used for pushing the workpiece on the conveying part onto the detection driving part and pushing the workpiece on the detection driving part onto the conveying part; a stirring part arranged in the immersion tank for stirring the magnetic suspension liquid in the immersion tank, and the stirring part is electrically connected with the detection driving part; the present invention can overcome the problems of incomplete magnetic suspension liquid spraying, uneven concentration, easy fire ignition, environmental pollution and normal use influence of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetization detection, and particularly to an immersion-type magnetization detection device. Background Art

[0002] Magnetization detection is a method of observing defects using magnetic powder as a display medium. According to the type of magnetic powder medium applied during magnetization, the detection methods are divided into wet method and dry method; according to the time when magnetic powder is applied to the workpiece, the inspection methods are divided into continuous method and residual magnetism method. Among them, the use of magnetic powder suspended in oil, water or other liquid media is called the wet method. During the detection process, the magnetic suspension is evenly distributed on the surface of the workpiece, and the shape and size of the defects are shown by the flow of the carrier liquid and the attraction of the leakage magnetic field to the magnetic powder. In the wet method detection, due to the dispersion and suspension performance of the magnetic suspension, smaller magnetic powder particles can be used. Therefore, it has a higher detection sensitivity. It is particularly suitable for detecting surface micro-defects, such as fatigue cracks, grinding cracks, etc.

[0003] Currently, the magnetization detection of workpieces mainly uses the spraying method, which is prone to incomplete spraying and uneven concentration of the magnetic suspension; moreover, when the circuit has poor contact, it is easy to cause a fire; in addition, during the spraying process, the magnetic suspension will splash everywhere, which will not only pollute the surrounding environment but also affect the use of the equipment. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the magnetic suspension spraying is incomplete and the concentration is uneven, which is easy to cause a fire, pollute the surrounding environment and affect the normal use of the equipment, and to propose an immersion-type magnetization detection device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] An immersion-type magnetization detection device, including a frame and an immersion tank, further including: a conveying part arranged on the frame for conveying the workpiece to be detected; a detection driving part arranged on the conveying part, the detection driving part can drive the workpiece to reciprocate up and down along the immersion tank and magnetize the workpiece; wherein, a feeding part is arranged on the conveying part, and the feeding part is used for pushing the workpiece on the conveying part to the detection driving part and pushing the workpiece on the detection driving part to the conveying part; a stirring part arranged in the immersion tank for stirring the magnetic suspension in the immersion tank, and the stirring part is electrically connected to the detection driving part.

[0007] For the convenience of conveying the workpiece to be detected, preferably, the conveying part includes a first feeding conveying device and a second discharging conveying device fixedly connected to the frame. The first feeding conveying device and the second discharging conveying device are placed in parallel and offset. The soaking tank is located between the side wall of the first feeding conveying device and the end of the second discharging conveying device.

[0008] For the convenience of adjusting the position of the workpiece in the soaking tank, further, the detection driving part includes a driving component and a magnetization component. The driving component includes vertical telescopic parts arranged on the first feeding conveying device and the second discharging conveying device. Support plates are fixedly connected to the first feeding conveying device and the second discharging conveying device. A fixed rod is fixedly connected to the support plate. The vertical telescopic part is fixedly connected to the fixed rod. The output end of the vertical telescopic part is fixedly connected to a moving plate. An adjusting plate is fixedly connected to the moving plate. Among them, the adjusting plate is located above the soaking tank, and through holes are formed through the adjusting plate.

[0009] For the convenience of magnetizing the lower part of the workpiece, furthermore, the magnetization component includes a first air cylinder fixedly connected to the fixed rod. A connecting rod is fixedly connected to the conveying end of the first air cylinder. A lifting plate is fixedly connected to the end of the connecting rod far from the first air cylinder. A lower electrode shaft is fixedly connected to the lifting plate. A lower magnetization coil is sleeved on the lower electrode shaft. Among them, the connecting rod is slidably connected with the moving plate. The lifting plate is located below the adjusting plate. A lower electrode plate matched with the through hole is fixedly connected to one end of the lower electrode shaft close to the moving plate.

[0010] For the convenience of magnetizing the upper part of the workpiece, further, the magnetization component further includes a second air cylinder and a third air cylinder fixedly connected to the fixed rod. A guide rod is fixedly connected to the output end of the second air cylinder. A coil support is fixedly connected to the end of the guide rod far from the second air cylinder. An upper magnetization coil is arranged on the coil support. An upper electrode shaft is fixedly connected to the output end of the third air cylinder. Among them, the upper magnetization coil is located above the adjusting plate. The upper electrode shaft is located at the central position of the upper magnetization coil. The coil support and the upper magnetization coil are eccentrically arranged.

[0011] For the convenience of adjusting the position of the workpiece, so as to facilitate the magnetization detection of the workpiece, further, the feeding part includes a feeding air cylinder and a discharging air cylinder fixedly connected to the first feeding conveying device. V-shaped blocks are fixedly connected to one ends of the feeding air cylinder and the discharging air cylinder close to the soaking tank. The feeding air cylinder is perpendicular to the first feeding conveying device. The discharging air cylinder is parallel to the first feeding conveying device and is located on the side of the soaking tank far from the second discharging conveying device.

[0012] To ensure the stability of the workpiece during transportation, further, it further includes a baffle fixedly connected to the first feeding and conveying device. A feeding hole is formed through the side of the first feeding and conveying device close to the baffle. The feeding hole is located between the feeding cylinder and the soaking tank, and the size of the feeding hole is larger than the size of the V-shaped block. The baffle is in fit with the feeding hole. Connecting plates are fixedly connected to the sides of the first feeding and conveying device and the second discharging and conveying device close to the soaking tank. Among them, the connecting plate on the first feeding and conveying device is matched with the feeding hole.

[0013] To ensure the uniformity of the magnetic suspension liquid during the magnetic ring detection of the workpiece, further, the stirring part includes a driving motor fixedly connected to the bottom of the soaking tank. A horizontal stirring shaft is rotatably connected inside the soaking tank. A driving bevel gear is fixedly connected to the top end of the horizontal stirring shaft. An annular groove is formed in the inner wall of the soaking tank. An end face gear ring is fixedly connected to the bottom of the annular groove. A driving gear meshing with the end face gear ring is arranged inside the annular groove. A rotating shaft is fixedly connected to the driving gear. A driven bevel gear meshing with the driving bevel gear is fixedly connected to the end of the rotating shaft away from the driving gear. Among them, the output end of the driving motor is connected to the horizontal stirring shaft. Horizontal stirring blades are arranged on the horizontal stirring shaft. Longitudinal stirring blades are fixedly connected to the rotating shaft.

[0014] To facilitate the control of the descending height of the workpiece in the soaking tank, further, the stirring part further includes a sliding groove formed at the end of the horizontal stirring shaft away from the driving motor. A top rod is slidably connected inside the sliding groove. A control switch is fixedly connected to the bottom of the sliding groove. A spring is fixedly connected between the top rod and the sliding groove. The control switch is located inside the spring. The control switch is electrically connected to the up-and-down telescopic part and the first cylinder.

[0015] To prevent the stirring of the magnetic suspension liquid from affecting the magnetization detection of the workpiece, further, the up-and-down telescopic part includes a driving cylinder fixedly connected to the fixed rod. A sliding guide block is slidably connected inside the driving cylinder. A telescopic rod slidably connected to the driving cylinder is fixedly connected to the sliding guide block. Among them, the telescopic rod is fixedly connected to the moving plate. A first wiring post is fixedly connected to the side of the driving cylinder away from the telescopic rod. A second wiring post is fixedly connected to the side of the sliding guide block away from the telescopic rod. The first wiring post and the second wiring post are electrically connected to the driving motor.

[0016] Compared with the prior art, the present invention provides an immersion magnetization detection device, which has the following beneficial effects:

[0017] 1. The immersion magnetization detection device can convey the workpiece to be detected and the workpiece after detection through the conveying part. At the same time, under the action of the feeding part, it is convenient to push the workpiece above the immersion tank and the workpiece above the immersion tank onto the conveying part, so as to realize the automatic conveying and magnetization detection of the workpiece, which is more suitable for the batch magnetization detection of workpieces.

[0018] 2. The immersion magnetization detection device can place the workpiece in the immersion tank through the driving component in the detection driving part, and at the same time magnetize the workpiece through the magnetization component. On the one hand, it can make the magnetic suspension liquid evenly distributed on the surface of the workpiece, improving the magnetization detection effect of the workpiece. On the other hand, it can make the electrified equipment immersed in the liquid, preventing the occurrence of fires caused by poor circuit contact. In addition, it can also reduce the splashing phenomenon of the magnetic suspension liquid during the magnetization of the workpiece, ensuring the cleanliness of the equipment and not polluting the surrounding environment.

[0019] 3. The immersion magnetization detection device moves downward in the immersion tank through the detection driving part. Under the action of the stirring part, on the one hand, it can prevent the magnetic suspension liquid from precipitating, and the stirring part can also stir the magnetic suspension liquid in multiple directions at the same time, further improving the stirring effect of the magnetic suspension liquid. It can also control the descending height of the workpiece through the stirring part, while ensuring the magnetization detection effect of the workpiece, preventing collisions between the workpiece and the equipment and the stirring part.

[0020] 4. The immersion magnetization detection device can control the rotation speed of the stirring part through the up and down telescopic part. While preventing the magnetic suspension liquid from precipitating, it can prevent the magnetic suspension liquid from affecting the magnetization detection of the workpiece during the stirring process. In addition, it can also prevent the workpiece from being affected by the magnetic suspension liquid and shifting in position, thus ensuring the stability of the workpiece during magnetization detection.

[0021] 5. The immersion magnetization detection device avoids the magnetic suspension liquid splashing onto moving parts such as linear guides and cylinders, thus affecting the service life of these components and facilitating maintenance and replacement.

[0022] The parts not involved in this device are the same as the prior art or can be realized by the prior art. The present invention can overcome the problems of incomplete magnetic suspension liquid spraying, uneven concentration, easy fire ignition, environmental pollution, and affecting the normal use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an immersion magnetization detection device proposed by the present invention.

[0024] Figure 2 It is a schematic side view structural diagram of an immersion magnetization detection device proposed by the present invention.

[0025] Figure 3 Top view structural schematic diagram of an immersion magnetization detection device proposed by the present invention.

[0026] Figure 4 Partial structural schematic diagram of an immersion magnetization detection device proposed by the present invention.

[0027] Figure 5 Cross-sectional structural schematic diagram of the immersion tank in an immersion magnetization detection device proposed by the present invention.

[0028] Figure 6 Partial cross-sectional structural schematic diagram of the up-and-down telescopic member in an immersion magnetization detection device proposed by the present invention.

[0029] Figure 7 An immersion magnetization detection device proposed by the present invention Figure 5 Schematic diagram of the structure of part A.

[0030] Figure 8 An immersion magnetization detection device proposed by the present invention Figure 5 Schematic diagram of the structure of part B.

[0031] In the figure: 1, frame; 2, first feeding conveying device; 3, second discharging conveying device; 4, feeding cylinder; 5, baffle; 6, feeding hole; 7, discharging cylinder; 8, V-shaped block; 9, connecting plate; 10, immersion tank; 11, support plate; 12, fixing rod; 13, up-and-down telescopic member; 131, driving cylinder; 132, sliding guide block; 133, telescopic rod; 134, first terminal; 135, second terminal; 14, moving plate; 15, adjusting plate; 16, through hole; 17, first cylinder; 18, connecting rod; 19, lifting plate; 20, lower electrode shaft; 21, lower magnetization coil; 22, lower electrode plate; 23, second cylinder; 24, guide rod; 25, coil support; 26, third cylinder; 27, upper electrode shaft; 28, upper magnetization coil; 29, driving motor; 30, horizontal stirring shaft; 31, driving bevel gear; 32, annular groove; 33, end face gear ring; 34, driving gear; 35, rotating shaft; 36, longitudinal stirring blade; 37, driven bevel gear; 38, chute; 39, control switch; 40, spring; 41, ejector rod. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0034] Embodiment:

[0035] Referring to Figures 1-8 , an immersion magnetization detection device includes a frame 1 and an immersion tank 10, and further includes: a conveying part arranged on the frame 1 for conveying the workpiece to be detected. The conveying part includes a first feeding conveying device 2 and a second discharging conveying device 3 fixedly connected to the frame 1. The first feeding conveying device 2 and the second discharging conveying device 3 are placed in parallel and offset. The immersion tank 10 is located between the side wall of the first feeding conveying device 2 and the end of the second discharging conveying device 3. The specific structures of the first feeding conveying device 2 and the second discharging conveying device 3 can refer to the technical solutions in the prior art. Those skilled in the art can know and will not be elaborated here as long as the conveying of the workpiece can be realized; a detection driving part arranged on the conveying part, which can drive the workpiece to reciprocate up and down along the immersion tank 10 and magnetize the workpiece; wherein, a feeding part is arranged on the conveying part for pushing the workpiece on the conveying part onto the detection driving part and pushing the workpiece on the detection driving part onto the conveying part; a stirring part arranged in the immersion tank 10 for stirring the magnetic suspension liquid in the immersion tank 10, and the stirring part is electrically connected to the detection driving part.

[0036] Referring to Figures 1-4 , the detection driving part includes a driving component and a magnetization component. The driving component includes an up-and-down telescopic member 13 arranged on the first feeding conveying device 2 and the second discharging conveying device 3. Support plates 11 are fixedly connected to the first feeding conveying device 2 and the second discharging conveying device 3. A fixing rod 12 is fixedly connected to the support plates 11. The up-and-down telescopic member 13 is fixedly connected to the fixing rod 12. The output end of the up-and-down telescopic member 13 is fixedly connected to a moving plate 14. An adjusting plate 15 is fixedly connected to the moving plate 14. Among them, the adjusting plate 15 is located above the immersion tank 10. A through hole 16 is formed through the adjusting plate 15. The working principle of the up-and-down telescopic member 13 is the same as that of a cylinder. The specific structure can refer to the technical solutions in the prior art. Those skilled in the art can know and will not be elaborated here.

[0037] During operation, by adjusting the length of the up-and-down telescopic member 13, the height of the adjustment plate 15 in the immersion tank 10 can be adjusted, facilitating the placement of the workpiece into the immersion tank 10 and the removal of the workpiece from the immersion tank 10. When the workpiece is located in the immersion tank 10, magnetization detection of the workpiece can be performed.

[0038] Referring to Figure 2 and Figure 4 As shown, the magnetization assembly includes a first cylinder 17 fixedly connected to the fixed rod 12. A connecting rod 18 is fixedly connected to the conveying end of the first cylinder 17. One end of the connecting rod 18 away from the first cylinder 17 is fixedly connected to a lifting plate 19. A lower electrode shaft 20 is fixedly connected to the lifting plate 19. A lower magnetization coil 21 is sleeved on the lower electrode shaft 20. Among them, the connecting rod 18 is slidably connected to the moving plate 14. The lifting plate 19 is located below the adjustment plate 15. One end of the lower electrode shaft 20 close to the moving plate 14 is fixedly connected to a lower electrode plate 22 matching the through hole 16. When the workpiece is placed in the lower magnetization coil 21 and energized, the workpiece can be magnetized by the lower magnetization coil 21. This is a conventional means in the prior art, so it will not be elaborated here. It should be noted that insulating sleeves and other structures are provided for all the structures that need to be powered on in this application to ensure the safety of the operator. This is a conventional operation in the prior art, so it is not shown in the drawings.

[0039] When performing magnetization detection on the workpiece, first, the up-and-down telescopic member 13 drives the adjustment plate 15 to move into the immersion tank 10. At the same time, the first cylinder 17 is driven, and the lifting plate 19 is driven to move synchronously through the connecting rod 18. The workpiece on the adjustment plate 15 is conveyed into the immersion tank 10. By energizing the lower electrode shaft 20, the lower magnetization coil 21 can magnetize the lower part of the workpiece, enabling the workpiece to adsorb the magnetic powder in the magnetic suspension liquid in the immersion tank 10 when it is located in the immersion tank 10, facilitating subsequent detection.

[0040] Referring to Figure 1 and Figure 2 As shown, the magnetization assembly further includes a second cylinder 23 and a third cylinder 26 fixedly connected to the fixed rod 12. The output end of the second cylinder 23 is fixedly connected to a guide rod 24. One end of the guide rod 24 away from the second cylinder 23 is fixedly connected to a coil support 25. An upper magnetization coil 28 is provided on the coil support 25. The output end of the third cylinder 26 is fixedly connected to an upper electrode shaft 27. Among them, the upper magnetization coil 28 is located above the adjustment plate 15. The upper electrode shaft 27 is located at the central position of the upper magnetization coil 28. The coil support 25 is eccentrically arranged with the upper magnetization coil 28. The coil support 25 is to ensure the stability of the upper magnetization coil 28 during movement. In addition, the inner diameter of the upper magnetization coil 28 is larger than the size of the workpiece, that is, when the upper magnetization coil 28 moves downward, it can be sleeved outside the workpiece.

[0041] Initially, the size between the lower magnetization coil 21 and the upper magnetization coil 28 is larger than the size of the workpiece. When the workpiece moves onto the lower magnetization coil 21, by driving the second cylinder 23 and the third cylinder 26, the upper magnetization coil 28 can be sleeved outside the workpiece, and power is supplied through the guide rod 24. After moving the workpiece into the immersion tank 10, magnetization detection of the workpiece can be carried out. Subsequently, the magnetic suspension liquid will uniformly adhere to the surface of the workpiece, and the positions with cracks will be clearly shown. This method can not only make the magnetic suspension liquid adhere more uniformly to the surface of the workpiece, but also prevent fires that are likely to be caused by poor electrical contact. In addition, it can reduce the splashing phenomenon when the magnetic suspension liquid magnetizes the workpiece, ensure the cleanliness of the equipment, and at the same time will not cause pollution to the surrounding environment.

[0042] Refer to Figure 1 and Figure 3 , the feeding part includes a feeding cylinder 4 and a discharging cylinder 7 fixedly connected to the first feeding conveying device 2. V-shaped blocks 8 are fixedly connected to one ends of the feeding cylinder 4 and the discharging cylinder 7 close to the immersion tank 10. The feeding cylinder 4 is perpendicular to the first feeding conveying device 2, and the discharging cylinder 7 is parallel to the first feeding conveying device 2 and is located on the side of the immersion tank 10 away from the second discharging conveying device 3.

[0043] During the conveying process of the workpiece, the feeding cylinder 4 can push the workpiece onto the adjusting plate 15 through the V-shaped block 8 to facilitate magnetization detection of the workpiece. After the detection is completed, the detected workpiece can be pushed onto the second discharging conveying device 3 through the discharging cylinder 7, thus completing the magnetization detection of the workpiece.

[0044] Refer to Figures 1-3 , it also includes a baffle 5 fixedly connected to the first feeding conveying device 2. A feeding hole 6 is penetrated and opened on one side of the first feeding conveying device 2 close to the baffle 5. The feeding hole 6 is located between the feeding cylinder 4 and the immersion tank 10, and the size of the feeding hole 6 is larger than the size of the V-shaped block 8. The baffle 5 is in fit with the feeding hole 6. Connecting plates 9 are fixedly connected to one sides of the first feeding conveying device 2 and the second discharging conveying device 3 close to the immersion tank 10. Among them, the connecting plate 9 on the first feeding conveying device 2 is matched with the feeding hole 6.

[0045] During the conveying process of the workpiece, the baffle 5 can limit the workpiece to ensure the stability of the workpiece when moving onto the adjusting plate 15. During the moving process of the workpiece, the connecting plate 9 can prevent the workpiece from falling outside the first feeding conveying device 2 or the second discharging conveying device 3. It should be explained that the connecting plate 9 is matched with the height of the adjusting plate 15 at the highest position.

[0046] Refer to Figure 2 、 Figure 5 and Figure 7, the stirring part includes a driving motor 29 fixedly connected to the bottom of the soaking tank 10. A horizontal stirring shaft 30 is rotatably connected inside the soaking tank 10. A driving bevel gear 31 is fixedly connected to the top end of the horizontal stirring shaft 30. An annular groove 32 is formed in the inner wall of the soaking tank 10. An end face gear ring 33 is fixedly connected to the bottom of the annular groove 32. A driving gear 34 meshing with the end face gear ring 33 is arranged inside the annular groove 32. A rotating shaft 35 is fixedly connected to the driving gear 34. One end of the rotating shaft 35 away from the driving gear 34 is fixedly connected with a driven bevel gear 37 meshing with the driving bevel gear 31. Among them, the output end of the driving motor 29 is connected to the horizontal stirring shaft 30. Horizontal stirring blades are arranged on the horizontal stirring shaft 30. A longitudinal stirring blade 36 is fixedly connected to the rotating shaft 35. The specific structures of the driving bevel gear 31 and the driven bevel gear 37 can refer to the technical solutions in the prior art. Those skilled in the art can know this and will not be elaborated here.

[0047] During the magnetization detection of the workpiece, first, the driving motor 29 will drive the horizontal stirring shaft 30 to rotate, stirring the magnetic suspension liquid at the bottom of the soaking tank 10 to prevent it from precipitating. In addition, under the action of the driving bevel gear 31 and the driven bevel gear 37, the rotating shaft 35 will be driven to rotate. At the same time, under the action of the end face gear ring 33 and the driving gear 34, while the driving gear 34 rotates, it will drive the rotating shaft 35 to rotate along the annular groove 32, so as to stir the magnetic suspension liquid at different positions, further improving the stirring effect of the magnetic suspension liquid for the magnetization detection of the workpiece.

[0048] Refer to Figure 5 and Figure 8 , the stirring part further includes a sliding groove 38 opened at one end of the horizontal stirring shaft 30 away from the driving motor 29. A top rod 41 is slidably connected inside the sliding groove 38. A control switch 39 is fixedly connected to the bottom of the sliding groove 38. A spring 40 is fixedly connected between the top rod 41 and the sliding groove 38. The control switch 39 is located inside the spring 40. The control switch 39 is electrically connected to the up-and-down telescopic part 13 and the first cylinder 17.

[0049] When the workpiece moves into the soaking tank 10, with the increase of the descending height, the lifting plate 19 will gradually contact the top rod 41 and drive the top rod 41 to move downward in the sliding groove 38. When it descends to a certain height, the top rod 41 will contact the control switch 39. At this time, the lifting plate 19 will just not be affected by the longitudinal stirring blade 36. Then the up-and-down telescopic part 13 and the first cylinder 17 will stop extending. This can not only ensure that the workpiece can be completely immersed in the magnetic suspension liquid, but also prevent the stirring of the magnetic suspension liquid from affecting the magnetization detection of the workpiece.

[0050] Refer to Figure 2 and Figure 6, the up-and-down telescopic member 13 includes a driving cylinder 131 fixedly connected to the fixed rod 12. A sliding guide block 132 is slidably connected inside the driving cylinder 131. A telescopic rod 133 fixedly connected to the sliding guide block 132 and slidably connected to the driving cylinder 131 is provided. Among them, the telescopic rod 133 is fixedly connected to the moving plate 14. A first terminal 134 is fixedly connected to one side of the driving cylinder 131 away from the telescopic rod 133. A second terminal 135 is fixedly connected to one side of the sliding guide block 132 away from the telescopic rod 133. The first terminal 134 and the second terminal 135 are electrically connected to the driving motor 29. The inner wall of the driving cylinder 131 is made of a resistive material. When the distance between the first terminal 134 and the second terminal 135 increases, the resistance increases. When the distance between the first terminal 134 and the second terminal 135 decreases, the resistance decreases. This is a conventional method in the prior art, so it will not be elaborated here.

[0051] During the downward movement of the up-and-down telescopic member 13, that is, during the downward movement of the workpiece in the magnetic suspension liquid, the distance between the first terminal 134 and the second terminal 135 increases. At this time, the resistance of the driving motor 29 increases. That is to say, during the downward movement of the workpiece, the rotation speed of the driving motor 29 will gradually decrease. This can avoid the too-fast stirring speed of the magnetic suspension liquid from affecting the adsorption of magnetic powder on the surface of the workpiece. In addition, it can also prevent the flow of the magnetic suspension liquid from affecting the position of the workpiece, thus ensuring the stability during the magnetization detection of the workpiece.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An immersion type magnetization detection device, comprising a frame and an immersion tank, characterized in that: Also includes: A conveying part arranged on the frame, used for conveying the workpiece to be inspected; A detection driving unit is arranged on the conveying unit, and the detection driving unit can drive the workpiece to move up and down along the immersion tank and magnetize the workpiece; Wherein, the conveying part is provided with a feeding part, and the feeding part is used to push the workpiece on the conveying part onto the detection driving part and push the workpiece on the detection driving part onto the conveying part; A stirring part disposed in the immersion tank, used for stirring the magnetic suspension in the immersion tank, and the stirring part is electrically connected to the detection drive part; The conveying part comprises a first feeding conveying device and a second discharging conveying device fixedly connected to the frame, the first feeding conveying device and the second discharging conveying device are placed in parallel and staggered manner, and the soaking tank is located between the side wall of the first feeding conveying device and the end of the second discharging conveying device; The detection drive unit includes a drive component and a magnetization component, the drive component includes an upper and lower telescopic member arranged on a first feeding conveying device and a second discharging conveying device, a support plate is fixedly connected to the first feeding conveying device and the second discharging conveying device, a fixed rod is fixedly connected to the support plate, the upper and lower telescopic members are fixedly connected to the fixed rod, a moving plate is fixedly connected to the output end of the upper and lower telescopic members, and an adjustment plate is fixedly connected to the moving plate, Wherein, the adjustment plate is located above the soaking tank, and a through hole is formed through the adjustment plate; The magnetization assembly comprises a first cylinder fixedly connected to a fixed rod, a connecting rod fixedly connected to a delivery end of the first cylinder, a lifting plate fixedly connected to an end of the connecting rod away from the first cylinder, a lower electrode shaft fixedly connected to the lifting plate, and a lower magnetization coil sleeved on the lower electrode shaft. The connecting rod is slidably connected to the movable plate, the lifting plate is located below the adjusting plate, and one end of the lower electrode shaft close to the movable plate is fixedly connected to a lower electrode plate matching the through hole; The magnetization assembly also includes a second cylinder and a third cylinder fixedly connected to the fixed rod, the output end of the second cylinder is fixedly connected to a guide rod, the end of the guide rod away from the second cylinder is fixedly connected to a coil support, the coil support is provided with an upper magnetization coil, the output end of the third cylinder is fixedly connected to an upper electrode shaft, The upper magnetizing coil is located above the regulating plate, the upper electrode axis is located at the center of the upper magnetizing coil, and the coil support is eccentrically arranged with respect to the upper magnetizing coil.

2. An immersion type magnetization detection device according to claim 1, characterized in that: The feeding part comprises a feeding cylinder and a discharging cylinder fixedly connected to the first feeding conveying device, and the feeding cylinder (4) and the discharging cylinder are fixedly connected to a V-shaped block at one end close to the immersion tank, the feeding cylinder and the first feeding conveying device are perpendicular to each other, and the discharging cylinder and the first feeding conveying device are parallel to each other and are located on a side of the immersion tank away from the second discharging conveying device.

3. An immersion type magnetization detection device according to claim 2, characterized in that: It also includes a baffle plate fixedly connected to the first feed conveying device, a feeding hole is penetrated through the side of the first feed conveying device close to the baffle plate, the feeding hole is located between the feeding cylinder and the soaking tank, and the size of the feeding hole is larger than the size of the V-shaped block, the baffle plate fits the feeding hole, and the first feed conveying device and the second discharging conveying device are fixedly connected to a connecting plate on one side close to the soaking tank, wherein the connecting plate on the first feed conveying device matches the feeding hole.

4. The immersion type magnetization detection device according to claim 1, characterized in that: The stirring part includes a driving motor fixedly connected to the bottom of the immersion tank, a horizontal stirring shaft is rotatably connected inside the immersion tank, a driving bevel gear is fixedly connected to the top of the horizontal stirring shaft, an annular groove is provided on the inner wall of the immersion tank, an end face gear ring is fixedly connected to the bottom of the annular groove, a driving gear meshing with the end face gear ring is arranged inside the annular groove, a rotating shaft is fixedly connected to the driving gear, and a driven bevel gear meshing with the driving bevel gear is fixedly connected to the end of the rotating shaft away from the driving gear. The output end of the driving motor is connected to a transverse stirring shaft, a transverse stirring blade is arranged on the transverse stirring shaft, and a longitudinal stirring blade is fixedly connected to the rotating shaft.

5. An immersion type magnetization detection device according to claim 4, characterized in that: The stirring part also includes a slide groove opened at the end of the horizontal stirring shaft away from the driving motor, the interior of the slide groove is slidably connected with a push rod, the bottom of the slide groove is fixedly connected with a control switch, a spring is fixedly connected between the push rod and the slide groove, the control switch is located inside the spring, and the control switch is electrically connected to the upper and lower telescopic parts and the first cylinder.

6. The immersion type magnetization detection device according to claim 5, characterized in that: The upper and lower telescopic parts include a driving cylinder fixedly connected to a fixed rod, a sliding guide block is slidably connected inside the driving cylinder, and a telescopic rod slidably connected to the driving cylinder is fixedly connected to the sliding guide block. Among them, the telescopic rod is fixedly connected to the movable plate, a first terminal is fixedly connected to the side of the driving cylinder away from the telescopic rod, a second terminal is fixedly connected to the side of the sliding guide block away from the telescopic rod, and the first terminal and the second terminal are electrically connected to the driving motor.

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