A magnetic core surface crack detection device

Abstract

The present invention belongs to the technical field of magnetic core crack detection, and in particular, relates to a magnetic core surface crack detection device, including a detection box and two supporting feet arranged on the lower side wall of the detection box, and the left side wall of the detection box is fixedly connected with an operation panel. When the present invention uses a probe to detect a rod-shaped magnetic core, impurities attached to the surface of the rod-shaped magnetic core can be automatically cleaned during the detection process, and then cracks on the surface of the rod-shaped magnetic core can be detected, thereby shortening the time spent on the additional cleaning process, and ensuring the accuracy of the rod-shaped magnetic core detection while reducing the workload of the operator. In addition, when the probe is used to detect cracks on the surface of the rod-shaped magnetic core, the straightness of the rod-shaped magnetic core can be automatically detected, and the detection results can be intuitively displayed to the operator, which is convenient for the operator to record and analyze, thereby increasing the performance of the detection device.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic core crack detection, and in particular relates to a magnetic core surface crack detection device. Background Art

[0002] The magnetic core is the main component of the coils and transformers used in various electronic devices. It is particularly important to detect cracks on the surface of the magnetic core. The surface cracks of the magnetic core will have a great impact on the power usage of the magnetic core. For example, a magnetic core surface crack detection device based on a visual camera system is proposed in patent announcement number CN113466250B.

[0003] In the field of core surface crack detection, existing detection devices are divided into two categories: contact and non-contact. Although non-contact detection devices have their unique advantages, they are expensive and have strict requirements on environmental conditions. When conducting detection work on rod-shaped magnetic cores with relatively simple structures, contact probe detection methods are more commonly used. However, before using the probe to detect the rod-shaped magnetic core, the impurities attached to the surface of the core must be cleaned to prevent these impurities from interfering with the normal detection operation of the probe. In this way, an additional cleaning process is added to the rod-shaped magnetic core detection process, which undoubtedly increases the workload of the operator. In addition, after long-term continuous use, the probe will reduce its detection accuracy due to wear, which will have an adverse effect on the detection quality of the rod-shaped magnetic core.

[0004] Therefore, a magnetic core surface crack detection device is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a magnetic core surface crack detection device in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: a magnetic core surface crack detection device, comprising a detection box and two supporting feet arranged on the lower side wall of the detection box, the left side wall of the detection box is fixedly connected with an operation panel, the front side wall of the detection box is hinged with a door panel, the lower side wall of the detection box is fixedly connected with a PLC controller, the rear side wall of the detection box is fixedly connected with a display screen, and further comprising:

[0007] A clamping assembly, arranged inside the detection box, for clamping the rod-shaped magnetic core;

[0008] A centering assembly, arranged inside the detection box, for placing the rod-shaped magnetic core at the center of the clamping assembly;

[0009] A detection component is arranged inside the detection box and behind the rod-shaped magnetic core, and is used to detect cracks on the surface of the rod-shaped magnetic core;

[0010] The auxiliary component is connected to the detection component and is used to detect the straightness of the rod-shaped magnetic core.

[0011] Preferably, the clamping assembly includes a rotating motor fixedly connected to the lower side wall of the detection box, the output end of the rotating motor passes through the detection box and is fixedly connected to a first electric push rod, the moving end of the first electric push rod is rotatably connected to a chassis, the upper inner wall of the detection box is rotatably connected to a top plate through a bracket, and the rod-shaped magnetic core is located between the chassis and the top plate.

[0012] Preferably, the centering component includes a first linear motor, the moving end of the first linear motor is fixedly connected to the angle motor, the output end of the angle motor is fixedly connected to the angle frame, the right end of the angle frame is fixedly connected to the mounting ring, the upper side wall of the mounting ring is fixedly connected to the vertical plate, the side wall of the vertical plate is fixedly connected to the driving motor, the inner wall of the mounting ring is rotatably connected to the hollow centering ring, the driving motor is connected to the hollow centering ring through a bevel gear ring transmission assembly, the outer inner wall of the hollow centering ring is fixedly connected to a ring tube, the outer wall of the hollow centering ring is fixedly connected to a small air pump, and the air outlet end of the small air pump passes through the hollow centering ring A center ring is provided, which is connected with the ring tube, a one-way valve is provided at the air outlet end of the small air pump, an air pressure sensor is fixedly connected to the inner wall of the ring tube, a venting pipe is connected to the side wall of the ring tube, and a magnetic control valve is provided in the venting pipe, the air pressure sensor and the PLC controller are electrically connected, a plurality of sockets are provided on the inner wall of the hollow centering ring, and a centering rod is inserted in the socket, an end of the centering rod extending out of the socket is fixedly connected with an arc plate, an end of the centering rod located on the inner wall of the hollow centering ring is fixedly connected with a connecting plate, a same spring is fixedly connected between the connecting plate and the hollow centering ring, and a same telescopic airbag is fixedly connected between the connecting plate and the ring tube.

[0013] Preferably, the detection component includes a second linear motor and a lifting plate, the second linear motor is fixedly connected to the inner wall of the detection box, the moving end of the second linear motor is fixedly connected to the lifting plate through a bracket, the front side wall of the lifting plate is fixedly connected to the second electric push rod, the front end of the second electric push rod is fixedly connected to the U-shaped frame through a pressure sensor, the inner wall of the U-shaped frame is rotatably connected to a rotating seat, the lower side wall of the U-shaped frame is fixedly connected to a micro self-locking motor, the output end of the micro self-locking motor is connected to the rotating seat, the left and right sides of the rotating seat are connected to a probe mechanism, the probe mechanism is electrically connected to a PLC controller, the outer wall of the U-shaped frame is fixedly connected to a U-shaped tube through a bracket, the front side wall of the U-shaped tube is connected to a bent pipe, the front end of the bent pipe is connected to a jet nozzle, the left side wall of the lifting plate is fixedly connected to an annular compressed gas tank, the side wall of the annular compressed gas tank is connected to an air pump, the air inlet end of the air pump is connected to the annular compressed gas tank, the air outlet end of the air pump is connected to a hose, and the upper end of the hose is connected to the U-shaped tube.

[0014] Preferably, a micro electric push rod is fixedly connected to the inner wall of the U-shaped frame, and a test sample is fixedly connected to the movable end of the micro electric push rod.

[0015] Preferably, the auxiliary component includes a conductive frame fixedly connected to the upper side wall of the U-shaped frame, the conductive frame is electrically connected to an external power supply, the front side wall of the lifting plate is fixedly connected to a resistor plate through a bracket, the movable end of the second linear motor is fixedly connected to a vertical rod, the lower side wall of the detection box is provided with a vertical hole matching the vertical rod, the inner wall of the vertical hole is fixedly connected to a dust ring, the lower end of the vertical rod extends out of the detection box and is fixedly connected to a connecting tube, the front side wall of the connecting tube is plugged with a connecting pin, the rear end of the connecting pin is fixedly connected to a connecting column, the front end of the connecting column extends out of the connecting tube and is fixedly connected to a magnetic suction box, the left inner wall of the magnetic suction box is fixedly connected to an electromagnetic block, the front end of the resistor plate is electrically connected to the electromagnetic block, and the magnetic suction box The inner slide is provided with a moving block, the left side wall of the moving block is fixedly connected with a permanent magnet block, the right side wall of the moving block is fixedly connected with a placing rod, the right end of the placing rod extends out of the magnetic suction box and is fixedly connected with an insertion tube, a marking pen is inserted in the insertion tube, the upper side wall of the moving block is fixedly connected with a square plate, the upper side wall of the magnetic suction box is fixedly connected with a supporting frame, the upper side wall of the magnetic suction box is provided with a long strip opening that matches the square plate, the upper end of the square plate passes through the long strip opening, and is fixedly connected to the support frame with the same spring, the lower side wall of the detection box is fixedly connected with a carrying plate, marking paper is placed on the front side wall of the carrying plate, and a baffle is fixedly connected to the right side wall of the carrying plate, the carrying plate is a metal plate, and a plurality of magnets are adsorbed on the surface of the carrying plate.

[0016] Preferably, both the front and rear sides of the rotating seat are fixedly connected with a laser generator, and the outer wall fixed sleeve of the chassis is provided with an annular laser signal receiver mechanism, and the annular laser signal receiver mechanism is electrically connected to the PLC controller.

[0017] Preferably, the front side wall of the door panel is fixedly connected to a dust box, the right side wall of the dust box is connected to a dust pump, the interior of the dust box is provided with a dustproof mechanism located at the air inlet end of the dust pump, the door panel is a hollow structure, the dust box and the door panel are fixedly connected with the same dust pipe, and the rear side wall of the door panel is provided with a plurality of dust holes.

[0018] Compared with the existing technology, the advantages of a magnetic core surface crack detection device are:

[0019] 1. Through the detection component set up, when the probe is used to detect the rod-shaped magnetic core, the impurities attached to the surface of the rod-shaped magnetic core can be automatically cleaned during the detection process, and then the cracks on the surface of the rod-shaped magnetic core can be detected, which shortens the time spent on the additional cleaning process and ensures the accuracy of the rod-shaped magnetic core detection while reducing the workload of the operator.

[0020] 2. Through the provision of a micro electric push rod and a test sample, the wear degree of the probe can be automatically detected after the probe has been used for a long time. When the detection finds that the probe is severely worn, the probe can be automatically replaced, thereby ensuring the working performance of the probe and reminding the operator to replace the worn probe.

[0021] 3. Through the auxiliary components, while using the probe to detect cracks on the surface of the rod-shaped magnetic core, the straightness of the rod-shaped magnetic core can be automatically detected, and the detection results can be intuitively displayed to the operator, which is convenient for the operator to record and analyze, thereby increasing the performance of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a magnetic core surface crack detection device provided by the present invention;

[0023] Figure 2 This invention provides a magnetic core surface crack detection device Figure 1 The main cross-sectional view of

[0024] Figure 3 It is a structural schematic diagram of a centering component in a magnetic core surface crack detection device provided by the present invention;

[0025] Figure 4 It is a top view cross-sectional view of a hollow centering ring of a magnetic core surface crack detection device provided by the present invention;

[0026] Figure 5 The present invention provides a magnetic core surface crack detection device. Figure 1 The right side cross-sectional view of

[0027] Figure 6 This invention provides a magnetic core surface crack detection device Figure 5 A magnified schematic diagram of part A;

[0028] Figure 7 It is a structural schematic diagram of a clamping assembly in a magnetic core surface crack detection device provided by the present invention;

[0029] Figure 8 It is a structural schematic diagram of an auxiliary component in a magnetic core surface crack detection device provided by the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of a magnetic suction box in a magnetic core surface crack detection device provided by the present invention;

[0031] Fig.10 It is a top cross-sectional view of a connecting tube in a magnetic core surface crack detection device provided by the present invention;

[0032] Fig.11 It is a schematic diagram of the moving path of a marking pen in a magnetic core surface crack detection device provided by the present invention.

[0033] In the figure: 1 detection box, 2 support feet, 3 operation panel, 4 door panel, 5 PLC controller, 6 display screen, 7 clamping assembly, 71 rotating motor, 72 first electric push rod, 8 chassis, 9 top plate, 10 centering assembly, 101 first linear motor, 102 angle motor, 11 angle frame, 12 mounting ring, 13 vertical plate, 14 drive motor, 15 hollow centering ring, 16 ring tube, 17 small air pump, 18 air pressure sensor, 19 deflation pipe, 20 magnetic control valve, 21 centering rod, 22 arc plate, 23 connecting plate, 24 telescopic airbag, 25 detection assembly, 251 second linear motor, 252 lifting plate, 26 second electric push rod, 27 U-shaped frame, 28 rotating seat, 29 micro self-locking motor, 30 probe Mechanism, 31 U-shaped tube, 32 bent tube, 33 nozzle, 34 annular compressed gas tank, 35 air pump, 36 hose, 37 micro electric push rod, 38 test sample, 39 auxiliary components, 391 conductive frame, 392 resistor plate, 40 vertical rod, 41 vertical hole, 42 dust ring, 43 connecting tube, 44 connecting pin, 45 connecting column, 46 magnetic suction box, 47 electromagnetic block, 48 moving block, 49 permanent magnetic block, 50 placement rod, 51 insert tube, 52 marking pen, 53 square plate, 54 support frame, 55 laser generator, 56 annular laser signal receiver mechanism, 57 dust suction box, 58 dust suction pump, 59 dust suction pipe, 60 dust suction hole, 61 pressure sensor, 62 bearing plate, 63 marking paper, 64 baffle, 65 magnet. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] like Figure 1-Figure 11 As shown, a magnetic core surface crack detection device includes a detection box 1 and two supporting feet 2 arranged on the lower side wall of the detection box 1, an operation panel 3 is fixedly connected to the left side wall of the detection box 1, a door panel 4 is hingedly connected to the front side wall of the detection box 1, a PLC controller 5 is fixedly connected to the lower side wall of the detection box 1, and a display screen 6 is fixedly connected to the rear side wall of the detection box 1, and also includes:

[0036] The clamping assembly 7 is arranged inside the detection box 1 and is used for clamping the rod-shaped magnetic core. The clamping assembly 7 includes a rotating motor 71 fixedly connected to the lower side wall of the detection box 1. The output end of the rotating motor 71 passes through the detection box 1 and is fixedly connected to a first electric push rod 72. The moving end of the first electric push rod 72 is rotatably connected to a chassis 8. The upper inner wall of the detection box 1 is rotatably connected to a top plate 9 through a bracket. The rod-shaped magnetic core is located between the chassis 8 and the top plate 9, and the rod-shaped magnetic core can be fixed in the detection box 1.

[0037] The centering component 10 is arranged inside the detection box 1 and is used to place the rod-shaped magnetic core at the center of the clamping component 7. The centering component 10 includes a first linear motor 101. The moving end of the first linear motor 101 is fixedly connected to an angle motor 102. The output end of the angle motor 102 is fixedly connected to an angle frame 11. The right end of the angle frame 11 is fixedly connected to a mounting ring 12. The upper side wall of the mounting ring 12 is fixedly connected to a vertical plate 13. The side wall of the vertical plate 13 is fixedly connected to a driving motor 14. The inner wall of the mounting ring 12 is rotatably connected to a hollow centering ring 15. The driving motor 14 is transmission-connected to the hollow centering ring 15 through a bevel gear ring transmission component. The outer inner wall of the hollow centering ring 15 is fixedly connected to a ring tube 16. The outer outer wall of the hollow centering ring 15 is fixedly connected to a small air pump 17. The air outlet end of the small air pump 17 passes through the hollow centering ring 15 and is connected to the ring tube 1 6 is connected, a one-way valve is provided at the air outlet end of the small air pump 17, an air pressure sensor 18 is fixedly connected to the inner wall of the annular tube 16, an air release pipe 19 is connected to the side wall of the annular tube 16, and a magnetic control valve 20 is provided in the air release pipe 19, the air pressure sensor 18 is electrically connected to the PLC controller 5, a plurality of plug holes are provided on the inner wall of the hollow centering ring 15, and a centering rod 21 is inserted in the plug hole, an end of the centering rod 21 extending out of the plug hole is fixedly connected to an arc plate 22, an end of the centering rod 21 located on the inner wall of the hollow centering ring 15 is fixedly connected to a connecting plate 23, a same spring is fixedly connected between the connecting plate 23 and the hollow centering ring 15, a same telescopic air bag 24 is fixedly connected between the connecting plate 23 and the annular tube 16, the rod-shaped magnetic core can be fixed at the center of the bottom plate 8 and the top plate 9, and the rod-shaped magnetic core can be placed longitudinally and horizontally at the same time, and the two end faces of the rod-shaped magnetic core can be detected;

[0038] The detection component 25 is arranged inside the detection box 1 and is located behind the rod-shaped magnetic core. It is used to detect cracks on the surface of the rod-shaped magnetic core. The detection component 25 includes a second linear motor 251 and a lifting plate 252. The second linear motor 251 is fixedly connected to the inner wall of the detection box 1. The moving end of the second linear motor 251 is fixedly connected to the lifting plate 252 through a bracket. The front side wall of the lifting plate 252 is fixedly connected to a second electric push rod 26. The front end of the second electric push rod 26 is fixedly connected to a U-shaped frame 27 through a pressure sensor 61. The inner wall of the U-shaped frame 27 is rotatably connected to a rotating seat 28. The lower side wall of the U-shaped frame 27 is fixedly connected to a micro self-locking motor 29. The output end of the micro self-locking motor 29 is connected to the rotating seat 28. The left and right sides of the rotating seat 28 are connected to a probe mechanism 30. The probe mechanism 30 and the PLC control The controller 5 is electrically connected, the outer wall of the U-shaped frame 27 is fixedly connected with a U-shaped tube 31 through a bracket, the front side wall of the U-shaped tube 31 is connected with a bent tube 32, the front end of the bent tube 32 is connected with a nozzle 33, the left side wall of the lifting plate 252 is fixedly connected with an annular compressed gas tank 34, the side wall of the annular compressed gas tank 34 is connected with an air delivery pump 35, the air inlet end of the air delivery pump 35 is connected with the annular compressed gas tank 34, the air outlet end of the air delivery pump 35 is connected with a hose 36, the upper end of the hose 36 is connected with the U-shaped tube 31, when the rod-shaped magnetic core is detected by using a probe, the impurities attached to the surface of the rod-shaped magnetic core can be automatically cleaned during the detection process, and then the surface cracks of the rod-shaped magnetic core can be detected, which shortens the time spent on the additional cleaning process, and ensures the accuracy of the rod-shaped magnetic core detection while reducing the workload of the operator;

[0039] The auxiliary component 39 is connected to the detection component 25 and is used to detect the straightness of the rod-shaped magnetic core. The auxiliary component 39 includes a conductive frame 391 fixedly connected to the upper side wall of the U-shaped frame 27, and the conductive frame 391 is electrically connected to the external power supply. The front side wall of the lifting plate 252 is fixedly connected to the resistor plate 392 through a bracket. The moving end of the second linear motor 251 is fixedly connected to the vertical rod 40. The lower side wall of the detection box 1 is provided with a vertical hole 41 that matches the vertical rod 40. The inner wall of the vertical hole 41 is fixedly connected to a dust ring 4 2. The lower end of the vertical rod 40 extends out of the detection box 1 and is fixedly connected to a connecting tube 43. A connecting pin 44 is inserted into the front side wall of the connecting tube 43. A connecting column 45 is fixedly connected to the rear end of the connecting pin 44. The front end of the connecting column 45 extends out of the connecting tube 43 and is fixedly connected to a magnetic suction box 46. An electromagnetic block 47 is fixedly connected to the left inner wall of the magnetic suction box 46. The front end of the resistor plate 392 is electrically connected to the electromagnetic block 47. A moving block 48 is slidably provided in the magnetic suction box 46. A permanent magnetic block is fixedly connected to the left wall of the moving block 48. 49, the right side wall of the moving block 48 is fixedly connected with a placement rod 50, the right end of the placement rod 50 extends out of the magnetic suction box 46, and is fixedly connected with an insertion tube 51, and a marking pen 52 is inserted in the insertion tube 51, the upper side wall of the moving block 48 is fixedly connected with a square plate 53, the upper side wall of the magnetic suction box 46 is fixedly connected with a support frame 54, the upper side wall of the magnetic suction box 46 is provided with a long strip opening that matches the square plate 53, the upper end of the square plate 53 passes through the long strip opening, and is fixedly connected to the support frame 54 with the same spring, the detection box 1 A carrying plate 62 is fixedly connected to the lower side wall, a marking paper 63 is placed on the front side wall of the carrying plate 62, a blocking bar 64 is fixedly connected to the right side wall of the carrying plate 62, the carrying plate 62 is a metal plate, and a plurality of magnets 65 are adsorbed on the surface of the carrying plate 62. While the probe is used to detect cracks on the surface of the rod-shaped magnetic core, the straightness of the rod-shaped magnetic core can be automatically detected, and the detection results can be intuitively displayed to the operator, which is convenient for the operator to record and analyze, thereby increasing the performance of the detection device.

[0040] The inner wall of the U-shaped frame 27 is fixedly connected with a micro electric push rod 37, and the movable end of the micro electric push rod 37 is fixedly connected with a test sample 38. The surface of the test sample 38 has multiple cracks. After the probe is used for a long time, the wear degree of the probe can be automatically detected. When the detection finds that the probe is severely worn, the probe can be automatically replaced, thereby ensuring the working performance of the probe and reminding the operator to replace the worn probe.

[0041] The front and rear sides of the rotating seat 28 are fixedly connected with a laser generator 55, and the outer wall of the chassis 8 is fixedly sleeved with a ring-shaped laser signal receiver mechanism 56. The ring-shaped laser signal receiver mechanism 56 is electrically connected to the PLC controller 5 and can control the moving path of the second linear motor 251 according to the length of the rod-shaped magnetic core.

[0042] The front side wall of the door panel 4 is fixedly connected to a dust box 57, the right side wall of the dust box 57 is connected to a dust pump 58, the interior of the dust box 57 is provided with a dust prevention mechanism located at the air inlet end of the dust pump 58, the door panel 4 is a hollow structure, the dust box 57 and the door panel 4 are fixedly connected with the same dust pipe 59, and the rear side wall of the door panel 4 is provided with a plurality of dust holes 60, which can collect impurities attached to the surface of the rod-shaped magnetic core.

[0043] The operating principle of the present invention is now described as follows: open the door panel 4, the operator inserts the rod-shaped magnetic core into the hollow centering ring 15 with one hand, and makes the middle end of the rod-shaped magnetic core be located in the hollow centering ring 15, and then presses the control button on the upper end of the operation panel 3 with the other hand, and transmits an electrical signal to the PLC controller 5 through the operation panel 3. After receiving the electrical signal, the PLC controller 5 controls the small air pump 17 to work, and the small air pump 17 transmits external gas to the ring tube 16, and transmits it to multiple telescopic air bags 24 through the ring tube 16, so that the telescopic air bags 24 are inflated, and the telescopic air bags 24 will push the connecting plate 23, the centering rod 21 and the arc plate 22 to overcome the elastic force of the spring and move in the direction close to the rod-shaped magnetic core. The arc plate 22 moves to make the arc plate 22 contact with the rod-shaped magnetic core. There are a large number of arc plates 22, and they move toward the center at the same time, so that the rod-shaped magnetic core can be clamped in the center position of the hollow centering ring 15. When the arc plate 22 contacts the rod-shaped magnetic core, it will stop moving immediately, and the small air pump 17 will still fill the annular tube 16 and the telescopic air bag 24 with gas, so that the air pressure inside the annular tube 16 continues to increase. After the air pressure sensor 18 detects that the air pressure inside the annular tube 16 and the telescopic air bag 24 reaches the set threshold, the air pressure sensor 18 will control the small air pump 17 to stop working through the PLC controller 5. When the operator sees that the rod-shaped magnetic core is clamped in the middle position of the hollow centering ring 15, the door panel 4 can be closed and locked.

[0044] Then the operator continues to send a start electrical signal to the PLC controller 5 through the operation panel 3. After receiving the electrical signal, the PLC controller 5 will control the second linear motor 251 to work, and the second linear motor 251 will drive the lifting plate 252 to move downward to a position halfway and stop. During the descent, the PLC controller 5 will control the micro self-locking motor 29 to drive the rotating seat 28 and the probe mechanisms 30 on both sides to rotate 180 degrees at the same time, so that the front probe mechanism 30 is set to the rear. Then the PLC controller 5 controls the micro electric push rod 37 to drive the test sample 38 to move forward to a set distance, so that the original front probe mechanism 30 and the test sample 38 are in contact. Then the PLC controller 5 controls the micro self-locking motor 29 to drive the probe mechanism 30 to move back and forth once at an angle of thirty degrees, and the data of the test sample 38 is detected by the probe mechanism 30 (the working principle of the probe mechanism 30 is to contact the object to be tested through the contact head). The surface of the object to be measured is measured by a probe, so as to obtain its surface shape, position, size and other parameters. When in use, the probe needs to be in contact with the surface of the object to be measured, and a certain pressure is applied to make the probe form a good contact with the surface of the object to be measured. Then, by measuring the changes in physical quantities such as resistance, capacitance, inductance, etc. between the probe and the surface of the object to be measured, the shape, position, size and other parameters of the surface of the object to be measured are obtained). There are multiple cracks with different depths and widths on the surface of the test sample 38, and then the data obtained by measuring the cracks are transmitted to the PLC controller 5. The PLC controller 5 analyzes the transmitted data and the retained data. When the data obtained by the analysis are the same, the micro self-locking motor 29 is controlled to drive the original front probe mechanism 30 to continue to be placed toward the front side. When the PLC controller 5 analyzes the data differently, the original rear probe mechanism 30 is placed forward, and the display screen 6 is controlled to display a prompt that the probe mechanism 30 needs to be replaced, thereby ensuring the accuracy of the probe mechanism 30 detection.

[0045] Since the initial state of the first linear motor 101 at this time is to drive the hollow centering ring 15 to stay at the halfway point, when the second linear motor 251 drives the lifting plate 252 to move downward to the halfway point, the front probe mechanism 30 will be aligned with the center axis position of the rod-shaped magnetic core. In the process of the lifting plate 252 moving downward, the PLC controller 5 will control the air pump 35 and the dust suction pump 58 to work at the same time. The air pump 35 transports the gas inside the annular compressed gas tank 34 to the U-shaped tube 31 through the hose 36, and sprays it out through the bend 32 and the nozzle 33, and uses high-speed airflow to clean the impurities at the end of the rod-shaped magnetic core. The impurities attached to the surface of the rod-shaped magnetic core can be cleaned up (the air flow speed is high, and all the impurities attached to the surface of the rod-shaped magnetic core can be cleaned up). The cleaned impurities will be transported to the dust box 57 through the dust suction pipe 59 for storage. When the lifting plate 252 stops moving, the PLC controller 5 will control the second electric push rod 26 to work and control the air pump 35 to stop working. The second electric push rod 26 will drive the probe mechanism 30 to contact the center of the end of the rod-shaped magnetic core. When the probe mechanism 30 contacts the end of the rod-shaped magnetic core, an interaction force will be generated. After the interaction force is detected by the pressure sensor 61, it will be sent to the PLC controller. 5 controls the second electric push rod 26 to stop working, and controls the second linear motor 251 to move downward at a slower speed. At the same time, the PLC controller 5 also controls the driving motor 14 to work. The driving motor 14 drives the hollow centering ring 15 and the rod-shaped magnetic core to rotate rapidly through the bevel gear ring transmission component. The probe mechanism 30 is used to detect the cracks at the end of the rod-shaped magnetic core. When the cracks are detected at the end of the rod-shaped magnetic core, it will be displayed on the display screen 6. When the probe mechanism 30 is driven by the second linear motor 251 to separate from the end of the rod-shaped magnetic core, the pressure sensor 61 can no longer detect the cracks between the probe mechanism 30 and the rod-shaped magnetic core. When the pressure sensor 61 detects the change of the interaction force, the PLC controller 5 controls the second electric push rod 26 to drive the probe mechanism 30 to retract, and then controls the second linear motor 251 to drive the lifting plate 252 to move upward to the initial position. Then the PLC controller 5 controls the angle motor 102 to work, and the angle motor 102 drives the angle frame 11, the mounting ring 12, the hollow centering ring 15 and the rod-shaped magnetic core to rotate 180 degrees at the same time, so that the front end of the rod-shaped magnetic core is placed toward the rear, and then the PLC controller 5 repeats the above steps to detect the front end of the rod-shaped magnetic core;

[0046] When the front end of the rod-shaped magnetic core is also detected, the PLC controller 5 will control the angle motor 102 to drive the rod-shaped magnetic core to rotate ninety degrees, so that the rod-shaped magnetic core is placed vertically, and then the PLC controller 5 controls the first electric push rod 72 to drive the chassis 8 to move upward. During the upward movement, the chassis 8 will contact the lower end of the rod-shaped magnetic core. Since the surface of the arc plate 22 is relatively smooth, the friction between the arc plate 22 and the rod-shaped magnetic core is small. When the chassis 8 contacts the lower end of the rod-shaped magnetic core, the chassis 8 will push the rod-shaped magnetic core upward. When the rod-shaped magnetic core and the top plate 9 are in contact, the bottom plate 9 is pressed against the bottom plate 9. After the touch, it will stop moving and generate a large interaction force. A piezoelectric sensor is provided on the surface of the chassis 8. When the piezoelectric sensor detects that the interaction force generated between the rod-shaped magnetic core and the chassis 8 exceeds the threshold, the PLC controller 5 will control the first electric push rod 72 to stop working, and control the magnetic control valve 20 to open, so that the gas inside the telescopic airbag 24 and the ring tube 16 is discharged through the venting pipe 19, and then the PLC controller 5 controls the first linear motor 101 to drive the hollow centering ring 15 to move upward to the highest point to avoid affecting the subsequent detection;

[0047] Then the PLC controller 5 will control the second linear motor 251 to drive the probe mechanism 30 to move downward to a position close to the top of the rod-shaped magnetic core and stop (the height of the top plate 9 is fixed, and the second linear motor 251 drives the probe mechanism 30 to move downward and stop when the path exceeds the height of the top plate 9). Then the PLC controller 5 will repeat the above steps, control the probe mechanism 30 to contact the side of the rod-shaped magnetic core, and perform detection. The second linear motor 251 will drive the probe mechanism 30 to move downward, and at the same time, the PLC controller 5 will control the rotating motor 71 to drive the rod-shaped magnetic core to rotate, so that the side of the rod-shaped magnetic core can be detected. When the probe mechanism 30 detects When cracks are detected on the side of the rod-shaped magnetic core, the cracks will be displayed on the display screen 6 through the PLC controller 5. When the probe mechanism 30 moves to the lower end of the rod-shaped magnetic core, the laser signal emitted by the front laser generator 55 will be received by the annular laser signal receiver mechanism 56 (the annular laser signal receiver mechanism 56 is made of a plurality of laser signal receivers distributed in an annular shape). After the annular laser signal receiver mechanism 56 detects the laser signal, it will control the second linear motor 251 to stop working through the PLC controller 5, and remind the operator to take out the rod-shaped magnetic core after the inspection through the prompt mechanism on the operation panel 3 (the prompt mechanism is a buzzer).

[0048] When the side wall of the rod-shaped magnetic core is detected, after the front probe mechanism 30 contacts the side wall of the rod-shaped magnetic core and the generated interaction force is detected by the pressure sensor 61, the pressure sensor 61 will control the conductive frame 391 to be connected to the external power supply immediately. At this time, the conductive frame 391 contacts the resistor plate 392, and the front end of the resistor plate 392 is electrically connected to the electromagnetic block 47. When current is passed through the conductive frame 391, the current will be transmitted to the electromagnetic block 47 through the conductive frame 391 and the resistor plate 392, so that the electromagnetic block 47 is energized to generate magnetic force. The electromagnetic block 47 will attract the permanent magnet block 49 to drive the moving block 48, the placement rod 50, the insert 51 and the marking pen 52 to move to the left together. At this time, the marking The marking pen 52 will draw a horizontal line on the surface of the marking paper 63. When the second linear motor 251 drives the probe mechanism 30 to move downward, the second linear motor 251 will drive the connecting tube 43 and the marking pen 52 to move downward through the vertical rod 40, and use the marking pen 52 to draw a vertical line on the marking paper 63. When the straightness of the rod-shaped magnetic core is normal, the angle between the vertical line and the horizontal line is ninety degrees. When the diameter of the lower end of the rod-shaped magnetic core gradually decreases, the second linear motor 251 drives the probe mechanism 30 to move downward. The interaction force between the probe mechanism 30 and the rod-shaped magnetic core will become smaller and smaller. When the pressure sensor 61 detects that the interaction force becomes smaller, it will pass P The LC controller 5 controls the second electric push rod 26 to drive the U-shaped frame 27 and the probe mechanism 30 to move in the direction close to the rod-shaped magnetic core assembly, so that the interaction force is maintained within the set threshold range. When the second electric push rod 26 drives the U-shaped frame 27 to move in the direction close to the rod-shaped magnetic core, the U-shaped frame 27 will also drive the conductive frame 391 to move in the direction close to the front end of the resistor plate 392. The front end of the resistor plate 392 is electrically connected to the electromagnetic block 47, so that the resistance of the circuit connected to the electromagnetic block 47 becomes smaller. When the external voltage remains unchanged, the current transmitted to the circuit of the electromagnetic block 47 becomes larger, so that the magnetic attraction generated by the electromagnetic block 47 gradually increases, and the electromagnetic block 47 will attract the permanent magnet block 4 9. The moving block 48 and the marking pen 52 gradually move forward so that the angle between the longitudinal line and the transverse line is greater than ninety degrees. On the contrary, when the diameter of the lower end of the rod-shaped magnetic core gradually increases, the angle between the longitudinal line and the transverse line will be less than ninety degrees. After the inspection of the rod-shaped magnetic core is completed, the operator can pull the connecting pin 44 to drive the connecting column 45 and the marking pen 52 away from the marking paper 63, and then remove the magnet 65 and replace the new marking paper 63. By measuring the angle between the transverse line and the longitudinal line on the marking paper 63, the straightness of the rod-shaped magnetic core can be determined. The surface of the marking paper 63 is provided with a plurality of auxiliary lines for determining the angle, which can assist the operator in quickly determining the angle.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic core surface crack detection device, comprising a detection box (1) and two support legs (2) arranged on the lower side wall of the detection box (1), the left side wall of the detection box (1) is fixedly connected to an operation panel (3), the front side wall of the detection box (1) is hinged with a door panel (4), the lower side wall of the detection box (1) is fixedly connected to a PLC controller (5), and the rear side wall of the detection box (1) is fixedly connected to a display screen (6), characterized in that: Also includes: A clamping assembly (7), arranged inside the detection box (1) and used for clamping the rod-shaped magnetic core; A centering component (10) is arranged inside the detection box (1) and is used to place the rod-shaped magnetic core at the center of the clamping component (7); A detection component (25) is arranged inside the detection box (1) and located behind the rod-shaped magnetic core, and is used to detect cracks on the surface of the rod-shaped magnetic core; The auxiliary component (39) is connected to the detection component (25) and is used to detect the straightness of the rod-shaped magnetic core. The clamping component (7) comprises a rotating motor (71) fixedly connected to the lower side wall of the detection box (1). The output end of the rotating motor (71) passes through the detection box (1) and is fixedly connected to a first electric push rod (72). The moving end of the first electric push rod (72) is rotatably connected to a bottom plate (8). The upper inner wall of the detection box (1) is rotatably connected to a top plate (9) via a bracket. The rod-shaped magnetic core is located between the bottom plate (8) and the top plate (9). The centering component (10) The invention comprises a first linear motor (101), wherein the movable end of the first linear motor (101) is fixedly connected to an angle motor (102), the output end of the angle motor (102) is fixedly connected to an angle frame (11), the right end of the angle frame (11) is fixedly connected to a mounting ring (12), the upper side wall of the mounting ring (12) is fixedly connected to a vertical plate (13), the side wall of the vertical plate (13) is fixedly connected to a driving motor (14), the inner wall of the mounting ring (12) is rotatably connected to a hollow centering ring (15), and the driving motor (14) is driven by a bevel gear ring transmission assembly and The hollow centering ring (15) is connected to the hollow centering ring (15) for transmission connection; the outer inner wall of the hollow centering ring (15) is fixedly connected to a ring tube (16); the outer wall of the hollow centering ring (15) is fixedly connected to a small air pump (17); the air outlet end of the small air pump (17) passes through the hollow centering ring (15) and is connected to the ring tube (16); the air outlet end of the small air pump (17) is provided with a one-way valve; the inner wall of the ring tube (16) is fixedly connected to an air pressure sensor (18); the side wall of the ring tube (16) is connected to an air release pipe (19), and the air release pipe (19) is provided with a magnetic control valve (20); The air pressure sensor (18) is electrically connected to the PLC controller (5); a plurality of jacks are provided on the inner side wall of the hollow centering ring (15); a centering rod (21) is inserted into the jack; one end of the centering rod (21) extending out of the jack is fixedly connected to an arc-shaped plate (22); one end of the centering rod (21) located on the inner wall of the hollow centering ring (15) is fixedly connected to a connecting plate (23); a same spring is fixedly connected between the connecting plate (23) and the hollow centering ring (15); and a same telescopic airbag (24) is fixedly connected between the connecting plate (23) and the ring tube (16).

2. A magnetic core surface crack detection device according to claim 1, characterized in that: The detection assembly (25) comprises a second linear motor (251) and a lifting plate (252); the second linear motor (251) is fixedly connected to the inner wall of the detection box (1); the movable end of the second linear motor (251) is fixedly connected to the lifting plate (252) via a bracket; the front side wall of the lifting plate (252) is fixedly connected to a second electric push rod (26); the front end of the second electric push rod (26) is fixedly connected to a U-shaped frame (27) via a pressure sensor (61); the inner wall of the U-shaped frame (27) is rotatably connected to a rotating seat (28); the lower side wall of the U-shaped frame (27) is fixedly connected to a micro self-locking motor (29); the output end of the micro self-locking motor (29) is connected to the rotating seat (28); the rotating The left and right sides of the seat (28) are both connected to a probe mechanism (30), and the probe mechanism (30) is electrically connected to a PLC controller (5). The outer wall of the U-shaped frame (27) is fixedly connected to a U-shaped tube (31) through a bracket, and the front side wall of the U-shaped tube (31) is connected to a curved tube (32), and the front end of the curved tube (32) is connected to a nozzle (33). The left side wall of the lifting plate (252) is fixedly connected to an annular compressed gas tank (34), and the side wall of the annular compressed gas tank (34) is connected to an air pump (35). The air inlet end of the air pump (35) is connected to the annular compressed gas tank (34), and the air outlet end of the air pump (35) is connected to a hose (36), and the upper end of the hose (36) is connected to the U-shaped tube (31).

3. A magnetic core surface crack detection device according to claim 2, characterized in that: A micro electric push rod (37) is fixedly connected to the inner wall of the U-shaped frame (27), and a test sample (38) is fixedly connected to the movable end of the micro electric push rod (37).

4. A magnetic core surface crack detection device according to claim 2, characterized in that: The auxiliary component (39) comprises a conductive frame (391) fixedly connected to the upper side wall of the U-shaped frame (27), the conductive frame (391) being electrically connected to an external power source, the front side wall of the lifting plate (252) being fixedly connected to a resistor plate (392) via a bracket, the movable end of the second linear motor (251) being fixedly connected to a vertical rod (40), the lower side wall of the detection box (1) being provided with a vertical hole (41) matching the vertical rod (40), the inner wall of the vertical hole (41) being fixedly connected to a dustproof ring (42), The lower end of the vertical rod (40) extends out of the detection box (1) and is fixedly connected to a connecting tube (43); a connecting pin (44) is inserted into the front side wall of the connecting tube (43); a connecting column (45) is fixedly connected to the rear end of the connecting pin (44); a front end of the connecting column (45) extends out of the connecting tube (43) and is fixedly connected to a magnetic suction box (46); an electromagnetic block (47) is fixedly connected to the left inner wall of the magnetic suction box (46); a front end of the resistor plate (392) is electrically connected to the electromagnetic block (47); and the magnetic suction box (4 6) A moving block (48) is provided for internal sliding movement, the left side wall of the moving block (48) is fixedly connected to a permanent magnet block (49), the right side wall of the moving block (48) is fixedly connected to a placement rod (50), the right end of the placement rod (50) extends out of the magnetic suction box (46) and is fixedly connected to an insertion tube (51), a marking pen (52) is inserted into the insertion tube (51), the upper side wall of the moving block (48) is fixedly connected to a square plate (53), the upper side wall of the magnetic suction box (46) is fixedly connected to a support frame (54), the magnetic suction The upper side wall of the box (46) is provided with a long strip opening that matches the square plate (53); the upper end of the square plate (53) passes through the long strip opening and is fixedly connected to the support frame (54) by a same spring; the lower side wall of the detection box (1) is fixedly connected to a supporting plate (62); a marking paper (63) is placed on the front side wall of the supporting plate (62); a blocking strip (64) is fixedly connected to the right side wall of the supporting plate (62); the supporting plate (62) is a metal plate, and a plurality of magnets (65) are adsorbed on the surface of the supporting plate (62).

5. The magnetic core surface crack detection device according to claim 2, characterized in that: The front and rear sides of the rotating seat (28) are both fixedly connected to a laser generator (55), and the outer wall of the chassis (8) is fixedly sleeved with an annular laser signal receiver mechanism (56), and the annular laser signal receiver mechanism (56) is electrically connected to the PLC controller (5).

6. The magnetic core surface crack detection device according to claim 1, characterized in that: The front side wall of the door panel (4) is fixedly connected to a dust box (57), the right side wall of the dust box (57) is connected to a dust pump (58), a dust prevention mechanism is provided inside the dust box (57) at the air inlet end of the dust pump (58), the door panel (4) is a hollow structure, a dust pipe (59) is fixedly connected between the dust box (57) and the door panel (4), and a plurality of dust holes (60) are provided on the rear side wall of the door panel (4).

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