A rapid detection device for magnetic core aperture

Abstract

The present invention belongs to the field of aperture detection technology, and in particular, relates to a magnetic core aperture rapid detection device, including a detection platform, and also including: a multi-directional positioning mechanism, an aperture detection mechanism, an eccentricity detection mechanism, an aperture standard value feedback mechanism, a detection number control mechanism, and a PLC controller. The present invention can quickly detect the aperture of the magnetic core, and quickly judge whether the detection result meets the preset aperture standard value, effectively improving the detection efficiency and reducing the detection error. When detecting the aperture of the magnetic core, it can simultaneously quickly detect and judge whether the inner circle of the magnetic core is eccentric, and give a warning in time. It can automatically control the position and number of the magnetic core aperture detection based on the aperture standard value of the magnetic core to be detected, so that the larger the aperture of the magnetic core, the more positions and times of detection.

Description

Technical Field

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

[0002] A magnetic core refers to a sintered magnetic metal oxide composed of a mixture of various iron oxides. The main functions of the magnetic core include increasing the magnetic permeability, improving the inductance quality factor and suppressing interference. The magnetic core is a high-frequency magnetic conductive material, mainly used in high-frequency transformers, high-frequency magnetic rings, etc., which can increase the magnetic permeability and improve the inductance quality factor. In addition, the magnetic core is also commonly used as an anti-interference magnetic core to solve the radio frequency interference problems of power lines, signal lines and connectors.

[0003] In order to improve the magnetic coupling efficiency and reduce magnetic leakage, a toroidal magnetic core is often used. The toroidal structure enables the magnetic circuit to form a closed loop, greatly reducing magnetic leakage. This helps to improve the magnetic conductivity of the magnetic core and makes the magnetic field more concentrated inside the magnetic core, thereby enhancing the performance of the inductor or transformer.

[0004] The dimensional accuracy of the core aperture directly affects the winding quality of the coil. If the aperture is too large or too small, the coil will not be wound tightly, which will affect the electrical performance parameters such as the inductance value and the coupling coefficient of the transformer. The precise aperture size can ensure good cooperation between the coil and the core, achieve the best magnetic coupling effect, and improve the stability and reliability of the circuit. Therefore, after the production of the core, the aperture of the core needs to be detected to determine the production quality of the core. At present, the staff uses equipment such as micrometers to select several detection points to detect the aperture size of the core. This is not only inefficient, but also has human errors, which affects the detection quality. For cores with large apertures, the circumference of the inner hole will be longer, which means that the range to be detected is larger. If only a few positions are tested, some local problems will not be found, resulting in inaccurate detection. For cores with smaller apertures, the circumference of the inner hole is relatively short and the detection range is small. If too many positions are tested, it will affect the detection efficiency. Summary of the invention

[0005] The object of the present invention is to provide a magnetic core aperture rapid detection device in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a magnetic core aperture rapid detection device, including a detection platform, and also including:

[0007] A multi-directional positioning mechanism is installed on the testing platform;

[0008] An aperture detection mechanism is fixedly mounted on the upper end of the detection platform;

[0009] An eccentricity detection mechanism, mounted on the aperture detection mechanism;

[0010] Aperture standard value feedback mechanism, fixedly mounted on the upper end of the testing platform;

[0011] A detection times control mechanism is arranged in the aperture standard value feedback mechanism;

[0012] The PLC controller is fixedly mounted on the upper end of the aperture detection mechanism and is electrically connected to the multi-directional positioning mechanism, the aperture detection mechanism, the eccentricity detection mechanism, the aperture standard value feedback mechanism and the detection times control mechanism respectively.

[0013] In the above-mentioned rapid detection device for the aperture of a magnetic core, the multi-directional positioning mechanism includes a plurality of clamping plates arranged in a ring-shaped distribution, a strip opening slidably mounted on the clamping plate is provided on the surface of the detection platform, a fixed slide rod is fixedly connected to the inner wall of the detection platform corresponding to the strip opening, a sliding hole slidably mounted on the fixed slide rod is provided on the side wall of the clamping plate, a rubber clamping block is fixedly installed on the upper side wall of the clamping plate, a plurality of adjusting screws corresponding to the position of the clamping plate are rotatably connected to the lower end of the detection platform, a screw hole threadedly mounted on the adjusting screw is provided on the lower side wall of the clamping plate, a driven bevel gear is fixedly installed on one end of the adjusting screw, an adjusting motor is fixedly installed on the lower end of the detection platform, and an active bevel gear meshing with a plurality of driven bevel gears is fixedly connected to the output end of the adjusting motor.

[0014] In the above-mentioned rapid detection device for the aperture of a magnetic core, the aperture detection mechanism includes a U-shaped support plate installed on the upper end of the detection platform, the upper horizontal part of the U-shaped support plate is rotatably sleeved with a rotating shaft, the upper end of the U-shaped support plate is fixedly provided with a rotating motor for driving the rotating shaft to rotate, the lower end of the rotating shaft is fixedly provided with a detection shell, the eccentric detection mechanism is arranged between the rotating shaft and the detection shell, the inner wall of the detection shell is symmetrically rotatably connected with two linkage screws, the two linkage screws are connected by a sprocket assembly, the inner wall of the detection shell is fixedly provided with a motor drive assembly for driving the linkage screw to rotate, the rod wall of the linkage screw is threadedly sleeved with a moving seat, the side wall of the moving seat is fixedly connected with an extension rod, the end of the extension rod away from the moving seat passes through and extends out of the detection shell, and is fixedly connected with a resistance rod, and the two resistance rods are arranged on opposite sides of the detection shell.

[0015] In the above-mentioned rapid detection device for the aperture of a magnetic core, the eccentricity detection mechanism includes a mounting seat fixedly connected to the lower end of the rotating shaft, the upper end of the detection shell is fixedly connected to two side plates symmetrically arranged about the mounting seat, a plurality of connecting rods are fixedly connected between the two side plates, the side wall of the mounting seat is provided with a sliding hole slidably sleeved with the connecting rod, a plurality of compensation springs sleeved outside the connecting rod are fixedly connected between the side plate and the mounting seat, a cavity is provided on the inner side of the lower end of the mounting seat, and two electrical connection blocks are symmetrically fixedly connected to the inner walls of the corresponding cavities through a plurality of elastic telescopic rods, an extension block is fixedly installed in the middle position of the upper end of the detection shell, the upper end of the extension block extends into the cavity through a rectangular through opening provided at the lower end of the mounting seat, and the upper end outer wall of the extension block is symmetrically fixedly connected to two conductive blocks arranged opposite to the position of the electrical connection block.

[0016] In the above-mentioned magnetic core aperture rapid detection device, the aperture standard value feedback mechanism includes a feedback shell, a transmission screw is rotatably connected to the upper side of the inner wall of the feedback shell, a stepping motor for driving the transmission screw to rotate is fixedly installed on the outer wall of the feedback shell, and a transmission seat is threadedly sleeved on the rod wall of the transmission screw. The upper end of the feedback shell is symmetrically fixedly connected to two vertical plates, and a plurality of resistance rods are fixedly connected between the two vertical plates. The same feedback plate is slidably sleeved on the outside of the plurality of resistance rods, and an identification needle is fixedly connected to the upper end of the feedback plate. An aperture scale plate located on one side of the identification needle is also fixedly installed between the two vertical plates. An in-place switch is fixedly installed on the lower end side wall of the feedback plate, and a confirmation rod arranged opposite to the in-place switch is fixedly connected to the upper end of the transmission seat. An opening is provided at the upper end of the feedback shell for the upper end of the confirmation rod to extend through.

[0017] In the above-mentioned magnetic core aperture rapid detection device, the detection number control mechanism includes a plurality of control switches fixedly mounted on the bottom of the inner wall of the feedback shell and distributed along the length direction of the transmission screw, and a pressing round head is fixedly mounted at the lower end of the transmission seat corresponding to the position of the control switch.

[0018] In the above-mentioned magnetic core aperture rapid detection device, a plurality of locking screws are symmetrically fixedly connected to the upper end of the detection platform, a plurality of sleeve holes for sleeve connection with the locking screws are opened at the lower end of the U-shaped support plate, and the external thread of the rod wall of the locking screw is sleeved with a locking nut crimped onto the outside of the U-shaped support plate.

[0019] In the above-mentioned rapid detection device for the aperture of a magnetic core, the inner wall of the detection shell is rotatably connected to a synchronous screw, the inner wall of the detection shell is fixedly provided with a servo motor for driving the synchronous screw to rotate, the rod wall of the synchronous screw is threadedly sleeved with a synchronous plate, the side wall of the synchronous plate is fixedly provided with a pressure monitoring plate, one of the side walls of the movable seat is fixedly connected to a pressure plate arranged opposite to the pressure monitoring plate, the inner wall of the detection shell is also fixedly connected to a limit slide rod arranged parallel to the synchronous screw, and the side wall of the synchronous plate is provided with a sliding hole slidably sleeved with the limit slide rod.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the detection table and multi-directional positioning mechanism, the magnetic core to be tested can be quickly positioned, and the outer circle center of the magnetic core is guaranteed to coincide with the center point of the aperture detection mechanism. Because the outer circle of the magnetic core is subjected to more uniform external pressure during the production process, the various parts of the outer circle can be deformed more uniformly, making it easier to maintain the circular structure. By positioning the outer circle of the magnetic core, the standard center position of the magnetic core can be effectively ensured, so that the magnetic core is accurately positioned and the detection quality is ensured.

[0022] 2. Through the aperture detection mechanism and aperture standard value feedback mechanism, the aperture of the magnetic core can be quickly detected, and whether the detection result meets the preset aperture standard value can be quickly judged, which effectively improves the detection efficiency and reduces the detection error.

[0023] 3. Through the eccentricity detection mechanism, when detecting the core aperture, it is possible to quickly detect and judge whether the inner circle of the core is eccentric, and issue a warning in time to avoid eccentricity which will make the magnetic circuit uneven, thereby increasing leakage magnetic flux. Leakage magnetic flux will affect circuit performance and generate electromagnetic interference, which will cause the equipment using the core to fail to work properly.

[0024] 4. Through the detection frequency control mechanism, the position and frequency of the core aperture detection can be automatically adjusted based on the standard value of the aperture of the magnetic core to be detected, so that the larger the core aperture, the more detection positions and times. For magnetic cores with large apertures, the circumference of the inner hole will be longer, which means that the range to be detected is larger. If detection is only performed at a few positions, some local problems cannot be found, resulting in inaccurate detection. For magnetic cores with smaller apertures, the circumference of the inner hole is relatively short and the detection range is small. If too many positions are detected, it will affect the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view cross-sectional structural schematic diagram of the present invention;

[0026] Figure 2It is a three-dimensional structural schematic diagram of the multi-directional positioning mechanism of the present invention;

[0027] Figure 3 It is a front view cross-sectional structural schematic diagram of the multi-directional positioning mechanism of the present invention;

[0028] Figure 4 It is a schematic cross-sectional view of the aperture detection mechanism of the present invention;

[0029] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the detection shell;

[0030] Figure 6 yes Figure 4 Schematic diagram of the three-dimensional structure of the assembly of the middle U-shaped support plate and the test platform;

[0031] Figure 7 It is a structural schematic diagram of the eccentricity detection mechanism of the present invention;

[0032] Figure 8 yes Figure 7 Enlarged view of the middle part;

[0033] Fig. 9 It is a schematic cross-sectional view of the aperture standard value feedback mechanism of the present invention.

[0034] In the figure: 1 detection table, 2 multi-directional positioning mechanism, 21 clamping plate, 22 strip opening, 23 fixed slide bar, 24 rubber clamping block, 25 adjusting screw, 26 driven bevel gear, 27 adjusting motor, 28 driving bevel gear, 3 aperture detection mechanism, 31 U-shaped support plate, 32 rotating shaft, 33 rotating motor, 34 detection shell, 35 linkage screw, 36 sprocket assembly, 37 motor drive assembly, 38 moving seat, 39 extension rod, 310 contact rod, 311 locking screw, 312 locking nut, 313 synchronous screw, 314 servo motor, 315 synchronous plate, 316 pressure force monitoring plate, 317 pressure plate, 318 limit slide bar, 4 eccentric detection mechanism, 41 mounting seat, 42 side plate, 43 connecting rod, 44 compensation spring, 45 elastic telescopic rod, 46 electrical connection block, 47 extension block, 48 conductive block, 5 aperture standard value feedback mechanism, 51 feedback shell, 52 transmission screw, 53 stepping motor, 54 transmission seat, 55 vertical plate, 56 resistance rod, 57 feedback plate, 58 identification needle, 59 aperture scale plate, 510 in-position switch, 511 confirmation rod, 6 detection number adjustment mechanism, 61 adjustment switch, 62 pressing round head, 7 PLC controller. DETAILED DESCRIPTION

[0035] 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.

[0036] like Figure 1-Figure 9 As shown, a magnetic core aperture rapid detection device includes a detection platform 1 and also includes:

[0037] The multi-directional positioning mechanism 2 is installed on the detection platform 1. The multi-directional positioning mechanism 2 includes a plurality of clamping plates 21 arranged in an annular distribution. The surface of the detection platform 1 is provided with a strip opening 22 slidably sleeved with the clamping plate 21. The inner wall of the detection platform 1 corresponding to the strip opening 22 is fixedly connected with a fixed slide rod 23. The side wall of the clamping plate 21 is provided with a sliding hole slidably sleeved with the fixed slide rod 23. A rubber clamping block 24 is fixedly installed on the upper side wall of the clamping plate 21. The lower end of the detection platform 1 is rotatably connected with a plurality of adjusting screws 2 arranged corresponding to the position of the clamping plate 21. 5. The lower side wall of the clamping plate 21 is provided with a screw hole threadedly sleeved with the adjusting screw 25. A driven bevel gear 26 is fixedly installed at one end of the adjusting screw 25. An adjusting motor 27 is fixedly installed at the lower end of the detection platform 1. The output end of the adjusting motor 27 is fixedly connected with an active bevel gear 28 meshing with a plurality of driven bevel gears 26. The magnetic core to be detected can be quickly positioned, and the outer circle center of the magnetic core is ensured to coincide with the center point of the aperture detection mechanism 3, which can effectively ensure the standard center position of the magnetic core, so that the magnetic core is accurately positioned and the detection quality is ensured.

[0038] The aperture detection mechanism 3 is fixedly mounted on the upper end of the detection platform 1. The aperture detection mechanism 3 includes a U-shaped support plate 31 mounted on the upper end of the detection platform 1. The upper horizontal portion of the U-shaped support plate 31 is rotatably sleeved with a rotating shaft 32. A rotating motor 33 for driving the rotating shaft 32 to rotate is fixedly mounted on the upper end of the U-shaped support plate 31. A detection shell 34 is fixedly mounted on the lower end of the rotating shaft 32. The eccentric detection mechanism 4 is arranged between the rotating shaft 32 and the detection shell 34. Two linkage screw rods 35 are symmetrically rotatably connected to the inner wall of the detection shell 34. The two linkage screw rods 35 are connected by a sprocket assembly 36 for transmission. A motor drive assembly 37 for driving the linkage screw rod 35 to rotate is fixedly mounted on the inner wall of the detection shell 34. The rod wall sprocket assembly 36 of the linkage screw rod 35 is connected to the inner wall of the detection shell 34. A movable seat 38 is sleeved on the threaded sleeve, and an extension rod 39 is fixedly connected to the side wall of the movable seat 38. The end of the extension rod 39 away from the movable seat 38 passes through the outside of the detection shell 34 and is fixedly connected to a resistance rod 310. The two resistance rods 310 are arranged on opposite sides of the detection shell 34. A plurality of locking screws 311 are symmetrically fixedly connected to the upper end of the detection platform 1. A plurality of sleeve holes for sleeve connection with the locking screws 311 are provided at the lower end of the U-shaped support plate 31. The rod wall of the locking screw 311 is externally threadedly sleeved with a locking nut 312 crimped on the outside of the U-shaped support plate 31. The aperture of the magnetic core can be quickly detected, and whether the detection result meets the preset aperture standard value can be quickly judged, which effectively improves the detection efficiency and reduces the detection error.

[0039] The inner wall of the detection shell 34 is rotatably connected to a synchronous screw 313, and a servo motor 314 for driving the synchronous screw 313 to rotate is fixedly installed on the inner wall of the detection shell 34. A synchronous plate 315 is threadedly sleeved on the rod wall of the synchronous screw 313, and a pressure monitoring plate 316 is fixedly installed on the side wall of the synchronous plate 315. A pressure plate 317 arranged opposite to the pressure monitoring plate 316 is fixedly connected to the side wall of one of the moving seats 38. A limit slide 318 arranged parallel to the synchronous screw 313 is also fixedly connected to the inner wall of the detection shell 34, and a sliding hole slidably sleeved with the limit slide 318 is opened on the side wall of the synchronous plate 315.

[0040] The eccentricity detection mechanism 4 is installed on the aperture detection mechanism 3. The eccentricity detection mechanism 4 includes a mounting seat 41 fixedly connected to the lower end of the rotating shaft 32. The upper end of the detection shell 34 is fixedly connected to two side plates 42 symmetrically arranged about the mounting seat 41. A plurality of connecting rods 43 are fixedly connected between the two side plates 42. The side wall of the mounting seat 41 is provided with a sliding hole slidably connected to the connecting rod 43. A plurality of compensation springs 44 are fixedly connected between the side plates 42 and the mounting seat 41 and are sleeved outside the connecting rod 43. The lower end inner side of the mounting seat 41 is provided with a A cavity is provided, and two electrical connection blocks 46 are symmetrically fixedly connected to the inner wall of the corresponding cavity through multiple elastic telescopic rods 45. An extension block 47 is fixedly installed at the middle position of the upper end of the detection shell 34. The upper end of the extension block 47 extends into the cavity through a rectangular through hole opened at the lower end of the mounting seat 41. The upper outer wall of the extension block 47 is symmetrically fixedly connected to two conductive blocks 48 arranged opposite to the electrical connection block 46. When detecting the aperture of the magnetic core, it can simultaneously quickly detect and judge whether the inner circle of the magnetic core is eccentric, and give a timely warning.

[0041] The aperture standard value feedback mechanism 5 is fixedly installed on the upper end of the detection platform 1. The aperture standard value feedback mechanism 5 comprises a feedback shell 51. A transmission screw 52 is rotatably connected to the upper side of the inner wall of the feedback shell 51. A stepping motor 53 for driving the transmission screw 52 to rotate is fixedly installed on the outer wall of the feedback shell 51. A transmission seat 54 is threadedly sleeved on the rod wall of the transmission screw 52. Two vertical plates 55 are symmetrically fixedly connected to the upper end of the feedback shell 51. A plurality of resistance rods 56 are fixedly connected between the two vertical plates 55. The plurality of resistance rods 56 are slidably sleeved with the same feedback plate 57. An identification needle 58 is fixedly connected to the upper end of the feedback plate 57. An aperture scale plate 59 located on one side of the identification needle 58 is also fixedly installed between the two vertical plates 55. An in-position switch 510 is fixedly installed on the lower side wall of the feedback plate 57. A confirmation rod 511 arranged opposite to the in-position switch 510 is fixedly connected to the upper end of the transmission seat 54. An opening for the upper end of the confirmation rod 511 to extend through is opened at the upper end of the feedback shell 51.

[0042] The detection times regulating mechanism 6 is installed in the aperture standard value feedback mechanism 5. The detection times regulating mechanism 6 includes a plurality of regulating switches 61 fixedly installed at the bottom of the inner wall of the feedback shell 51 and distributed along the length direction of the transmission screw 52. A pressing round head 62 corresponding to the position of the regulating switch 61 is fixedly installed at the lower end of the transmission seat 54. The position and number of the magnetic core aperture detection can be automatically regulated based on the aperture standard value of the magnetic core to be detected, so that the larger the magnetic core aperture, the more detection positions and times.

[0043] The PLC controller 7 is fixedly mounted on the upper end of the aperture detection mechanism 3 and is electrically connected to the multi-directional positioning mechanism 2, the aperture detection mechanism 3, the eccentricity detection mechanism 4, the aperture standard value feedback mechanism 5 and the detection times control mechanism 6 respectively.

[0044] The operating principle of the present invention is described as follows: the magnetic core to be tested is placed on the test platform 1, and then the U-shaped support plate 31 is accurately positioned and installed on the test platform 1 through the positioning sleeve effect of multiple locking screws 311 and the U-shaped support plate 31, and the U-shaped support plate 31 is fixed by the locking nut 312, so as to realize the rapid fixed installation of the entire aperture detection mechanism 3;

[0045] The PLC controller 7 controls the action of the adjusting motor 27, and the adjusting motor 27 drives the active bevel gear 28 to rotate, and drives the multiple adjusting screws 25 to rotate synchronously through the meshing action of the active bevel gear 28 and the multiple driven bevel gears 26, and then drives the multiple clamping plates 21 to move toward the magnetic core through the threaded sleeve action of the adjusting screw 25 and the clamping plate 21, and then cooperates with the rubber clamping block 24 to firmly fix the magnetic core, and makes the magnetic core move to the detection center position of the aperture detection mechanism 3, so that the detection shell 34 is located at the center position of the inner circle of the magnetic core;

[0046] Based on the standard aperture value of the produced magnetic core, the feedback plate 57 is manually driven to move on the resistance rod 56, so that the identification needle 58 on the upper end of the feedback plate 57 moves to the corresponding numerical position on the aperture scale plate 59, and then the position of the in-place switch 510 is adjusted. The setting of the resistance rod 56 enables the feedback plate 57 to maintain a stable limit after being adjusted in place. The PLC controller 7 controls the stepper motor 53 and the servo motor 314 to act synchronously. The stepper motor 53 drives the transmission screw 52 to rotate. The transmission seat 54 drives the confirmation rod 511 to move through the threaded socket effect of the transmission screw 52 and the transmission seat 54. The servo motor 314 drives the synchronous screw 313 to rotate. Through the threaded socket effect and limit effect of the synchronous screw 313 and the synchronous plate 315 The limiting and guiding effect of the slide bar 318 on the synchronous plate 315 enables the synchronous plate 315 to drive the pressure monitoring plate 316 to move synchronously, until the confirmation rod 511 at the upper end of the transmission seat 54 presses on the in-place switch 510. At this time, the PLC controller 7 controls the stepper motor 53 and the servo motor 314 to stop the action synchronously, and fix the position of the transmission seat 54 and the synchronous plate 315. Specifically, the larger the standard aperture of the magnetic core, the greater the distance moved by the transmission seat 54 and the synchronous plate 315, so that the pressure monitoring plate 316 is farther away from the pressure plate 317. It is additionally explained that since the feedback plate 57 is limited by the friction of the resistance rod 56, the extrusion triggering of the in-place switch 510 by the confirmation rod 511 will not cause the movement of the feedback plate 57.

[0047] When the aperture of the magnetic core is detected, the PLC controller 7 controls the motor drive assembly 37 to drive one of the linkage screws 35 to rotate, and the two linkage screws 35 rotate synchronously through the sprocket assembly 36. Through the threaded sleeve effect of the linkage screw 35 and the moving seat 38, the moving seat 38 drives the extension rod 39 to drive the two resistance rods 310 to move back to each other. When the aperture value corresponding to the current detected position of the detected magnetic core is too large, the resistance rod 310 can move outward a greater distance, thereby enabling the pressure plate 317 connected to the moving seat 38 to move a greater distance, so that when the pressure plate 317 contacts the pressure monitoring plate 316, a greater extrusion force is given to the pressure monitoring plate 316. When the extrusion pressure received by the pressure plate 317 by the pressure monitoring plate 316 exceeds the preset pressure value, it means that the aperture value corresponding to the current detection position of the magnetic core is too large. At this time, the PLC controller 7 first controls the motor drive assembly 37 to stop the action to avoid the continued outward movement of the resistance rod 310, thereby To prevent the pressure plate 317 from exerting an excessive moving thrust on the pressure monitoring plate 316, the PLC controller 7 sends a signal to the staff's receiving terminal to remind the staff that the currently detected magnetic core aperture does not meet the standard. On the contrary, when the aperture value corresponding to the currently detected position of the detected magnetic core is too small, until the contact rod 310 contacts the inner side of the magnetic core and cannot move further, the pressure plate 317 is unable to press on the pressure monitoring plate 316, or the squeezing pressure of the pressure plate 317 on the pressure monitoring plate 316 is less than the preset pressure value, which means that the aperture value corresponding to the current detection position of the magnetic core is too small. The PLC controller 7 also feeds back a signal to remind the staff that the currently detected magnetic core aperture does not meet the standard and quickly detects the magnetic core aperture. It is additionally noted that until the contact rod 310 contacts the inner side of the magnetic core and cannot move further, the torque of the motor drive assembly 37 increases, and the PLC controller 7 controls the motor drive assembly 37 to stop moving after receiving the feedback signal from the motor drive assembly 37.

[0048] When performing aperture detection, because the rotating shaft 32 and the standard center of the magnetic core are coaxial, during the aperture detection process, when the inner circle corresponding to the position detected by the magnetic core is eccentric, one of the abutting rods 310 will first contact the inner wall of the magnetic core, thereby giving a thrust to the detection shell 34, so that the detection shell 34 drives the side plate 42 to move relative to the mounting seat 41 to overcome the elastic force of the compensation spring 44, thereby causing the extension block 47 at the upper end of the detection shell 34 to move relative to the mounting seat 41, so that the conductive block 48 on one side of the extension block 47 contacts the electric connection block 46 on the inner side of the mounting seat 41, and the conductive block 48 and the electric connection block 46 feed back electrical signals to the PLC controller 7, thereby determining that the current detection position of the magnetic core is eccentric, and being able to quickly detect and judge whether the inner hole of the magnetic core is eccentric, and to issue a warning in time;

[0049] After the aperture detection is performed on a detection position of the magnetic core, the PLC controller 7 controls the motor drive assembly 37 to drive the linkage screw 35 to reverse, so that the contact rod 310 is reset and moved, and the PLC controller 7 controls the rotation angle of the rotating motor 33 to move the contact rod 310 to the next detection position of the inner hole of the magnetic core, and perform the aperture detection again, thereby realizing multi-point detection and improving the detection accuracy. Based on the detection number control mechanism 6, when the estimated aperture value of the magnetic core is larger, the movement distance of the transmission seat 54 is larger, so that the pressing round head 62 at the lower end of the transmission seat 54 can finally press on the control switch 61 at the rear side, and the PLC control The controller 7 determines the control angle of the rotating motor 33 for the detection position based on the control switch 61 whose feedback signal is triggered last. The control signal priority fed back to the PLC controller 7 by the control switch 61 at the rear side is higher, the estimated aperture value of the magnetic core is larger, and the angle at which the rotating motor 33 drives the detection shell 34 to rotate each time is smaller. Therefore, in a 360-degree detection environment, more detection times can be achieved. The larger the aperture of the magnetic core, the more detection positions and times can be achieved. For a magnetic core with a large aperture, the circumference of the inner hole will be longer, which means that the range to be detected is larger. If detection is only performed at a few positions, certain local problems may not be discovered, resulting in inaccurate detection.

[0050] 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 aperture rapid detection device, comprising a detection platform (1), characterized in that: Also includes: A multi-directional positioning mechanism (2) is mounted on the detection platform (1); An aperture detection mechanism (3) is fixedly mounted on the upper end of the detection platform (1); An eccentricity detection mechanism (4) is mounted on the aperture detection mechanism (3); Aperture standard value feedback mechanism (5) is fixedly mounted on the upper end of the detection platform (1); A detection number control mechanism (6) is arranged in the aperture standard value feedback mechanism (5); A PLC controller (7) is fixedly mounted on the upper end of the aperture detection mechanism (3) and is electrically connected to the multi-directional positioning mechanism (2), the aperture detection mechanism (3), the eccentricity detection mechanism (4), the aperture standard value feedback mechanism (5) and the detection number control mechanism (6); The multi-directional positioning mechanism (2) comprises a plurality of clamping plates (21) arranged in an annular distribution, a strip opening (22) slidably sleeved with the clamping plate (21) is provided on the surface of the detection platform (1), a fixed slide rod (23) is fixedly connected to the inner wall of the detection platform (1) corresponding to the strip opening (22), a sliding hole slidably sleeved with the fixed slide rod (23) is provided on the side wall of the clamping plate (21), a rubber clamping block (24) is fixedly mounted on the upper side wall of the clamping plate (21), and the detection platform The lower end of the testing platform (1) is rotatably connected to a plurality of adjusting screws (25) arranged corresponding to the positions of the clamping plate (21); a screw hole threadedly sleeved with the adjusting screw (25) is provided on the side wall of the lower end of the clamping plate (21); a driven bevel gear (26) is fixedly mounted on one end of the adjusting screw (25); an adjusting motor (27) is fixedly mounted on the lower end of the testing platform (1); an output end of the adjusting motor (27) is fixedly connected to a driving bevel gear (28) meshing with the plurality of driven bevel gears (26); The aperture detection mechanism (3) comprises a U-shaped support plate (31) mounted on the upper end of the detection platform (1); a rotating shaft (32) is rotatably sleeved on the upper horizontal portion of the U-shaped support plate (31); a rotating motor (33) for driving the rotating shaft (32) to rotate is fixedly mounted on the upper end of the U-shaped support plate (31); a detection shell (34) is fixedly mounted on the lower end of the rotating shaft (32); the eccentric detection mechanism (4) is arranged between the rotating shaft (32) and the detection shell (34); two linkage screws (35) are symmetrically rotatably connected to the inner wall of the detection shell (34); the two linkage screws (35) are symmetrically rotatably connected to the inner wall of the detection shell (34); and the two linkage screws (35) are symmetrically rotatably connected to the inner wall of the detection shell (34). The movable screw rods (35) are connected in transmission via a sprocket assembly (36); a motor drive assembly (37) for driving the linkage screw rod (35) to rotate is fixedly mounted on the inner wall of the detection shell (34); a movable seat (38) is threadedly sleeved on the rod wall of the linkage screw rod (35); a protruding rod (39) is fixedly connected to the side wall of the movable seat (38); an end of the protruding rod (39) away from the movable seat (38) passes through the outside of the detection shell (34) and is fixedly connected to a resisting rod (310); and two resisting rods (310) are arranged on opposite sides of the detection shell (34); The eccentricity detection mechanism (4) comprises a mounting seat (41) fixedly connected to the lower end of the rotating shaft (32); the upper end of the detection shell (34) is fixedly connected to two side plates (42) symmetrically arranged about the mounting seat (41); a plurality of connecting rods (43) are fixedly connected between the two side plates (42); a sliding hole slidably sleeved with the connecting rods (43) is formed on the side wall of the mounting seat (41); a plurality of compensation springs sleeved outside the connecting rods (43) are fixedly connected between the side plates (42) and the mounting seat (41). (44), a cavity is provided on the inner side of the lower end of the mounting seat (41), and two electrical connection blocks (46) are symmetrically fixedly connected to the inner wall of the corresponding cavity through a plurality of elastic telescopic rods (45), an extension block (47) is fixedly installed at the middle position of the upper end of the detection shell (34), the upper end of the extension block (47) extends into the cavity through a rectangular opening provided at the lower end of the mounting seat (41), and the upper end outer wall of the extension block (47) is symmetrically fixedly connected to two conductive blocks (48) arranged opposite to the electrical connection block (46); The aperture standard value feedback mechanism (5) comprises a feedback shell (51), a transmission screw (52) is rotatably connected to the upper side of the inner wall of the feedback shell (51), a stepping motor (53) for driving the transmission screw (52) to rotate is fixedly mounted on the outer wall of the feedback shell (51), a transmission seat (54) is threadedly sleeved on the rod wall of the transmission screw (52), and two vertical plates (55) are symmetrically fixedly connected to the upper end of the feedback shell (51), a plurality of resistance rods (56) are fixedly connected between the two vertical plates (55), and the plurality of resistance rods (56) are externally connected to the plurality of resistance rods (56). A feedback plate (57) is slidably sleeved, an upper end of the feedback plate (57) is fixedly connected to an identification needle (58), an aperture scale plate (59) located on one side of the identification needle (58) is fixedly installed between the two vertical plates (55), an in-position switch (510) is fixedly installed on the lower side wall of the feedback plate (57), a confirmation rod (511) arranged opposite to the in-position switch (510) is fixedly connected to the upper end of the transmission seat (54), and an opening is opened at the upper end of the feedback shell (51) for the upper end of the confirmation rod (511) to extend through; The detection number control mechanism (6) comprises a plurality of control switches (61) fixedly mounted on the bottom of the inner wall of the feedback housing (51) and distributed along the length direction of the transmission screw (52); a pressing round head (62) corresponding to the position of the control switch (61) is fixedly mounted on the lower end of the transmission seat (54).

2. A magnetic core aperture rapid detection device according to claim 1, characterized in that: The upper end of the detection platform (1) is symmetrically fixedly connected to a plurality of locking screws (311); the lower end of the U-shaped support plate (31) is provided with a plurality of sleeve holes for sleeve engagement with the locking screws (311); the outer threads of the rod wall of the locking screw (311) are sleeved with locking nuts (312) crimped onto the outside of the U-shaped support plate (31).

3. A magnetic core aperture rapid detection device according to claim 1, characterized in that: The inner wall of the detection shell (34) is rotatably connected to a synchronous screw (313), the inner wall of the detection shell (34) is fixedly provided with a servo motor (314) for driving the synchronous screw (313) to rotate, the rod wall of the synchronous screw (313) is threadedly sleeved with a synchronous plate (315), the side wall of the synchronous plate (315) is fixedly provided with a pressure monitoring plate (316), the side wall of one of the movable seats (38) is fixedly connected to a pressure plate (317) arranged opposite to the pressure monitoring plate (316), the inner wall of the detection shell (34) is also fixedly connected to a limit slide bar (318) arranged parallel to the synchronous screw (313), and the side wall of the synchronous plate (315) is provided with a sliding hole slidably sleeved with the limit slide bar (318).

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