A fully automatic detection equipment for the magnetic properties of NdFeB

Abstract

The present invention relates to a fully automatic detection device for the magnetic properties of NdFeB, comprising a machine platform, a magnetizing mechanism arranged on the machine platform and used for magnetizing a magnet, a feeding mechanism arranged on the outside of the machine platform and used for conveying the magnet into the magnetizing mechanism, and a detection mechanism arranged on the outside of the magnetizing mechanism and used for detecting the magnetized magnet; the detection mechanism comprises a shell arranged on the machine platform, a detection component movably arranged in a detection channel of the shell and used for detecting the magnetic induction intensity of the magnet, a first positioning component arranged in the detection channel and used for locating the position of the axis of the magnet, a pushing component arranged in the detection channel and used for cooperating with the detection component to locate the position of the maximum magnetic induction intensity, and a sorting component arranged on the outside of the shell and used for sorting the magnet. The present invention solves the problems of low production continuity, poor detection accuracy, difficulty in confirming the detection position, and difficulty in confirming the maximum magnetic induction intensity of the existing NdFeB magnets during the production process.

Description

Technical Field

[0001] The invention relates to the field of magnetic property detection, and in particular to a fully automatic detection device for the magnetic properties of NdFeB. Background Art

[0002] NdFeB has high magnetic properties and good temperature stability. It can maintain stable magnetic properties at different temperatures, and its demagnetization curve is linear at room temperature. Therefore, it has been applied in electronic products, instruments, motors, aerospace and other fields, especially in the fields of wind power and new energy vehicles. The qualification of NdFeB production mainly detects the magnetic properties, temperature stability and dimensional stability of the magnet, and the maximum magnetic induction intensity of the magnet has a significant impact on its multiple properties; Magnetic properties: The higher the maximum magnetic induction intensity, the stronger the magnetic field and the more magnetic energy it can store, and the better the magnetic properties of the magnet; Temperature stability: At high temperatures, the magnetic properties of the magnet will decrease. The higher the maximum magnetic induction intensity, the better the performance retention of the magnet in high temperature environments; Dimensional stability: The increase in the maximum magnetic induction intensity will have an adverse effect on the mechanical properties of the magnet, reduce the strength and fracture toughness, and reduce the dimensional stability; Therefore, when producing NdFeB magnets, the maximum magnetic induction intensity is controlled within an appropriate range to improve the production quality of NdFeB magnets.

[0003] Patent document CN115372869A discloses a NdFeB permanent magnet polarity detection device, including a workbench, a mounting member is arranged above the workbench, an adjusting component for driving the mounting member to move is arranged on the surface of the workbench, a clamping component for fixing a workpiece is arranged on the mounting member, a limiting component for supporting and limiting the workpiece is transmitted on the clamping component, a side plate is fixed to one side surface of the workbench, and a polarity detection instrument is fixedly installed on the surface of the side plate; the structure of the present invention is relatively simple, and the workpiece to be detected is automatically transported to the bottom of the detection area through the transmission component, and the workpiece to be detected is conveniently clamped, fixed and limited by the mutual cooperation of the clamping component and the limiting component, and the workpiece is moved up to the detection area by the adjusting component, and the mechanical operation is automated and convenient to use.

[0004] However, in the actual production process, the inventors found that the existing NdFeB magnets have low production continuity and low production efficiency during the magnetization and detection process; and the magnet detection method is usually through magnetic detection, which is not only difficult and inaccurate to detect the overall magnetic detection, but also difficult to confirm and detect the maximum magnetic induction intensity. In addition, the traditional detection method is to make the magnet pass directly through the detection device, and the transmission speed and detection position are difficult to confirm, which further affects the detection and confirmation of the maximum magnetic induction intensity, and thus it is difficult to ensure the production quality of NdFeB magnets. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art, and to achieve continuous production of NdFeB magnets during magnetization and detection by setting a feeding mechanism, a magnetization mechanism and a detection mechanism. In the detection process, after locating the position corresponding to the maximum magnetic induction intensity on the magnet, the same batch of magnets can be detected in the future, so as to improve the accuracy of the detection position. Thus, the problems of low production continuity, poor detection accuracy, difficulty in confirming the detection position and difficulty in confirming the maximum magnetic induction intensity of the existing NdFeB magnets during magnetization and detection are solved.

[0006] In view of the above technical problems, the technical solution is as follows: a fully automatic detection device for the magnetic properties of NdFeB, including:

[0007] A machine platform, a magnetizing mechanism disposed on the machine platform and used to magnetize a magnet, a feeding mechanism disposed outside the machine platform and used to transport the magnet into the magnetizing mechanism, and a detection mechanism disposed outside the magnetizing mechanism and used to detect whether the magnet after magnetization is qualified;

[0008] The detection mechanism includes a shell that is arranged on the machine platform and has a detection channel formed therethrough, a detection component that is movably arranged in the detection channel and is used to detect the magnetic induction intensity of the magnet, a first positioning component that is arranged in the detection channel and is used to locate the axial position of the magnet, a pushing component that is movably arranged in the detection channel and is used to push the magnet to locate the position of maximum magnetic induction intensity, and a sorting component that is arranged on the outside of the shell and is used to sort qualified magnets from unqualified magnets.

[0009] Preferably, the sorting component includes a discharge trough arranged on the machine platform and connected to the detection channel away from the end of the magnetization channel, a baffle arranged in the discharge trough and used to separate the lower end of the discharge trough into a finished product trough and a defective product trough, and a guide plate rotatably arranged on the baffle and used to guide the magnet to the finished product trough or the defective product trough.

[0010] Preferably, the first positioning assembly includes at least three first positioning rods equidistantly arranged on the inner wall of the detection channel for sliding along the circumference of the shell, a first driving rod arranged on the first positioning rod, a first driving ring axially arranged on the inner wall of the detection channel for sliding, and a first driving groove arranged on the first driving ring and slidably connected to the first driving rod, and when the first driving ring slides, the first driving groove is used to drive the first positioning rod to slide radially with the first driving rod until each of the first positioning rods clamps the outer annular surface of the magnet, thereby locating the axial position of the magnet.

[0011] Preferably, the detection assembly comprises a mounting seat slidably arranged on the inner wall of the detection channel along the axial direction, a support rod rotatably arranged on the mounting seat, and a detection probe arranged on the support rod and inserted into the axial hole of the magnet along with the rotation of the support rod and the sliding of the mounting seat;

[0012] The pushing assembly includes a mounting frame that is movable along a direction approaching or moving away from the shell and is arranged on the outside of the shell, a pushing plate that is slidably arranged on the mounting frame along the length direction of the shell and is used to push and position the magnet, an extension rod that is slidably arranged on the mounting frame along the length direction of the shell, a pushing bevel block that is slidably arranged on the extension rod and is used to push the first driving ring to slide with the movement of the mounting frame, and an elastic member that is arranged on the extension rod and is used to force the pushing bevel block to abut against the first driving ring.

[0013] Preferably, the sorting component includes two carrying plates movably arranged on the machine table, a plurality of carrying rods arranged in an array on the carrying plates and used to support the axial holes on the magnets, a conveying rod rotatably arranged on the outside of each of the first positioning rods and used to convey the detected magnets to the carrying rods, and a driving member arranged on the machine table and used to drive each of the conveying rods to swing simultaneously to the same carrying plate.

[0014] Preferably, the magnetizing mechanism includes a shell disposed on the machine platform and having a magnetizing channel formed therethrough, a magnetizing coil disposed in the magnetizing channel and used to magnetize the magnet, and a second positioning component disposed in the magnetizing channel and used to position the magnet so that the axis thereof coincides with the axis of the magnetizing coil.

[0015] Preferably, the second positioning assembly includes at least three second positioning rods slidably arranged on the inner wall of the magnetizing channel at equal intervals along the circumference of the magnetizing coil and located in the magnetizing coil, a second driving rod arranged on the second positioning rod, a second driving ring slidably arranged on the inner wall of the magnetizing channel along the axial direction, and a second driving groove arranged on the second driving ring and slidably connected to the second driving rod, and when the second driving ring slides, the second driving groove is used to drive the second positioning rod to slide radially with the second driving rod until each of the second positioning rods clamps the outer annular surface of the magnet, thereby positioning the magnet to coincide with the axis of the magnetizing coil.

[0016] Preferably, the number of the detection mechanisms is two, and the two detection mechanisms are symmetrically arranged on both sides of the magnetizing mechanism, and the magnetizing mechanism further comprises a conveying component arranged on the outer side of the shell and used for alternately conveying the magnetized magnets into the two detection mechanisms;

[0017] The conveying assembly includes a conveying plate movably arranged between the two detection mechanisms, two carrying slots arranged on the conveying plate and used to carry the magnet, a supporting plate arranged on the machine platform and used to support the magnet in the carrying slots, and two connecting slots arranged on the supporting plate and used to connect each of the carrying slots with each of the detection mechanisms, and when the conveying plate moves to transport the magnet in one of the carrying slots to a corresponding one of the detection mechanisms, the other carrying slot is aligned with the magnetization channel.

[0018] Preferably, the loading mechanism includes a vibration plate which is vibrated and arranged on the outside of the machine and has a disc structure, a conveying track which is spirally arranged on the inner wall of the vibration plate and cooperates with the vibration of the vibration plate to spirally convey the magnet upward, a discharge channel which is connected to the conveying track at one end and passes through the outside of the vibration plate at the other end and is connected to the magnetizing mechanism, and a flip plate which is arranged on the conveying track and is used to flip the magnet until the axes between the magnet and the discharge channel are parallel to each other.

[0019] Preferably, an inclined table top is provided at the upper end of the machine, and the magnetizing mechanism and the detecting mechanism are arranged on the inclined table top in sequence from top to bottom, so that the magnet can slide into the magnetizing mechanism and the detecting mechanism in sequence from top to bottom under the action of gravity.

[0020] Beneficial effects of the present invention:

[0021] (1) The present invention realizes the continuous production of NdFeB magnets during the magnetization and detection process by providing a feeding mechanism, a magnetization mechanism and a detection mechanism. In the detection process, the detection component cooperates with the first positioning component and the pushing component to accurately detect and locate the position corresponding to the maximum magnetic induction intensity on the magnet. The pushing component can then push the position corresponding to the maximum magnetic induction intensity on the magnet to be positioned with the detection component, thereby enabling the same batch of magnets to be tested in the future and focusing on the detection, thereby improving the accuracy of the detection position.

[0022] (2) In the present invention, a movable mounting frame and a push plate and an extension rod slidably arranged thereon are provided, so that the push plate and the extension rod can slide radially and axially in the detection channel, and then the push plate can push the magnet to slide in the detection channel so that the position corresponding to the maximum magnetic induction intensity on it is positioned with the detection component, and the extension rod can drive the push bevel block to cooperate with the elastic member to force the first drive ring to slide, thereby realizing the adjustment of the distance between the first positioning rods, so that magnets of various sizes can be transported and positioned, thereby improving the versatility of the device, and realizing the driving of the first positioning rod to clamp the outer ring surface of the magnet and locate the axial position of the magnet. In addition, in the process of the push plate pushing the corresponding position of the maximum magnetic induction intensity on the positioning magnet, the push bevel block cooperates with the elastic member to force the first positioning rod to slide with the first driving ring and clamp the positioning magnet. This linkage structure is cleverly designed and easy to use, and reduces the use of the driving source and the volume of the detection mechanism;

[0023] (3) In the present invention, a rotating conveying rod is provided to cooperate with a driving member so that the conveying rod can swing to the position corresponding to the bearing rod on the two bearing plates, and then the qualified magnets and unqualified magnets detected by the detection component are respectively conveyed to the bearing rods of the two bearing plates for positioning and neatly stacking through the conveying rod, so as to realize sorting, and facilitate the later packaging of qualified magnets and the recycling and reuse of unqualified magnets;

[0024] In summary, the equipment has the effects of high production continuity, good detection accuracy, easy confirmation of detection position, and easy confirmation of maximum magnetic induction intensity, and is particularly suitable for the field of magnetic property detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 A three-dimensional diagram of a fully automatic detection device for the magnetic properties of NdFeB provided by the present invention.

[0027] Figure 2 This is a schematic structural diagram of the detection mechanism provided by the present invention.

[0028] Figure 3 A three-dimensional cross-sectional view of a housing provided by the present invention.

[0029] Figure 4 A top view of the housing provided by the present invention.

[0030] Figure 5 The present invention provides Figure 4Cross-sectional view along the middle line A.

[0031] Figure 6 The present invention provides Figure 5 Schematic diagram of the positioning process of the first positioning component.

[0032] Figure 7 The present invention provides Figure 4 Cross-sectional view along the middle edge at B.

[0033] Figure 8-Figure 10 The present invention provides Figure 7 Diagram of the pushing process of the pushing component.

[0034] Fig.11 This is a schematic structural diagram of the magnetizing mechanism provided by the present invention.

[0035] Fig.12 The three-dimensional cross-sectional view of the magnetizing mechanism provided by the present invention.

[0036] Fig.13 The present invention provides Fig.12 A partial enlarged view of point C in the middle.

[0037] Fig.14 This is a structural schematic diagram of the feeding mechanism provided by the present invention.

[0038] Fig.15 The present invention provides Fig.14 A partial enlarged view of point D in the middle.

[0039] Fig.16 This is a three-dimensional diagram of a fully automatic detection device for the magnetic properties of NdFeB in Example 2 provided by the present invention.

[0040] Fig.17 The present invention provides Fig.16 A partial enlarged view of point E in the middle.

[0041] Fig.18 A schematic diagram of the structure of the magnet provided by the present invention. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0043] Embodiment 1

[0044] like Figure 1-Figure 3 As shown, a fully automatic detection device for the magnetic properties of NdFeB includes:

[0045] A machine platform 1, a magnetizing mechanism 2 disposed on the machine platform 1 and used to magnetize a magnet 5, a feeding mechanism 3 disposed outside the machine platform 1 and used to transport the magnet 5 into the magnetizing mechanism 2, and a detection mechanism 4 disposed outside the magnetizing mechanism 2 and used to detect whether the magnetized magnet 5 is qualified;

[0046] The detection mechanism 4 includes a shell 41 arranged on the machine 1 and having a detection channel 411 formed therethrough, a detection component 42 movably arranged in the detection channel 411 and used to detect the magnetic induction intensity of the magnet 5, a first positioning component 43 arranged in the detection channel 411 and used to locate the axial position of the magnet 5, a pushing component 44 movably arranged in the detection channel 411 and used to push the magnet 5 until it is located at the position of maximum magnetic induction intensity, and a sorting component 45 arranged on the outside of the shell 41 and used to sort qualified magnets 5 from unqualified magnets 5.

[0047] In this embodiment, by setting up the feeding mechanism 3, the magnetizing mechanism 2 and the detecting mechanism 4, the continuous production of the NdFeB magnet 5 during the magnetizing and detecting process is realized, and in the detecting process, the detecting component 42 cooperates with the first positioning component 43 and the pushing component 44 to accurately detect and locate the position corresponding to the maximum magnetic induction intensity on the magnet 5, and then the pushing component 44 can push the position corresponding to the maximum magnetic induction intensity on the magnet 5 to be positioned with the detecting component 42, so that when the same batch of magnets 5 are detected in the future, the detection can be focused on, thereby improving the accuracy of the detection position.

[0048] In detail, the magnet 5 to be magnetized is first transported to the magnetizing mechanism 2 through the feeding mechanism 3 for magnetization, and then the magnetized magnet 5 enters the outer shell 41 and cooperates with the pushing component 44 and the first positioning component 43 to locate the axis of the magnet 5. The detection component 42 can accurately detect and locate the position on the magnet 5 corresponding to the maximum magnetic induction intensity, and then move the pushing component 44 to push the magnet 5 until the position on the magnet 5 corresponding to the maximum magnetic induction intensity is positioned with the detection component 42, so that the detection component 42 can focus on the position on the magnet 5 corresponding to the maximum magnetic induction intensity when detecting again, so as to avoid the overall detection speed of the magnet 5 being too fast, affecting the detection and confirmation of the maximum magnetic induction intensity. Finally, the qualified magnet 5 and the unqualified magnet 5 detected enter the sorting component 45 for sorting.

[0049] It should be noted that the shell 41 is made of Permalloy or iron-aluminum alloy, has high magnetic permeability, and can guide the magnetic field lines of the external magnetic field to pass through it, thereby reducing the impact of the magnetic field lines of the external magnetic field entering the detection channel 411 on the detection data of the detection component 42.

[0050] Further, if Figure 1-Figure 2As shown, the sorting component 45 includes a discharge trough 451 arranged on the machine 1 and connected to the end of the detection channel 411 away from the magnetization channel 211, a stop bar 452 arranged in the discharge trough 451 and used to separate the lower end of the discharge trough 451 into a finished product trough 4511 and a defective product trough 4512, and a guide plate 453 rotatably arranged on the stop bar 452 and used to guide the magnet 5 to the finished product trough 4511 or the defective product trough 4512.

[0051] In this embodiment, a rotating guide plate 453 is provided to guide the qualified magnets 5 and the unqualified magnets 5 detected by the detection component 42 in the discharge trough 451 to the finished product trough 4511 and the defective product trough 4512 separated by the stop bar 452, respectively, to achieve sorting.

[0052] In detail, when the detection component 42 detects that the magnet 5 after magnetization is a qualified magnet 5, the guide plate 453 rotates toward the defective product slot 4512 until it blocks the defective product slot 4512, and the finished product slot 4511 is opened, so that the guide plate 453 can guide the qualified magnet 5 in the discharge slot 451 to the finished product slot 4511; when the detection component 42 detects that the magnet 5 after magnetization is an unqualified magnet 5, the guide plate 453 rotates toward the finished product slot 4511 until it blocks the finished product slot 4511.

[0053] It should be noted that the sorting component 45 further includes two collecting boxes 454 , which are respectively located below the finished product slot 4511 and the defective product slot 4512 , and are used to classify and collect the qualified magnets 5 and the unqualified magnets 5 .

[0054] Further, if Figure 5-Figure 6 As shown, the first positioning assembly 43 includes at least three first positioning rods 431 equidistantly slidably arranged on the inner wall of the detection channel 411 along the circumference of the shell 41, a first driving rod 432 arranged on the first positioning rod 431, a first driving ring 433 axially slidably arranged on the inner wall of the detection channel 411, and a first driving groove 434 arranged on the first driving ring 433 and slidably connected to the first driving rod 432, and when the first driving ring 433 slides, the first driving groove 434 is used to drive the first positioning rod 431 to slide radially with the first driving rod 432 until each first positioning rod 431 clamps the outer ring surface of the magnet 5, thereby locating the axial position of the magnet 5.

[0055] In this embodiment, at least three first positioning rods 431 are provided to cooperate with the first driving rod 432, the first driving ring 433 and the first driving groove 434 to realize radial sliding, thereby clamping the outer ring surface of the magnet 5 and positioning the axial position of the magnet 5, and clamping and positioning magnets 5 of various sizes, thereby improving the versatility of the device.

[0056] In detail, when the first driving ring 433 slides and forces the first positioning rod 431 to slide radially through the first driving groove 434 and the first driving rod 432, the distance between the first positioning rods 431 can be adjusted, so that magnets 5 of different sizes can enter between multiple first positioning rods 431 for sliding transportation. When the first driving ring 433 slides and forces the first positioning rod 431 to slide radially inward until the outer ring surface of the magnet 5 is clamped, the axial position of the magnet 5 can be located.

[0057] It should be noted that one end of the first positioning rod 431 close to the magnetizing mechanism 2 is bent radially outward to form a first guide rod 4311 , so as to facilitate guiding the magnetized magnet 5 of the magnetizing mechanism 2 to slide between the plurality of first positioning rods 431 .

[0058] Further, if Figure 3-Figure 10 as well as Fig.18 As shown, the detection assembly 42 includes a mounting seat 421 slidably disposed on the inner wall of the detection channel 411 along the axial direction, a support rod 422 rotatably disposed on the mounting seat 421, and a detection probe 423 disposed on the support rod 422 and inserted into the axial hole 51 of the magnet 5 with the rotation of the support rod 422 and the sliding of the mounting seat 421;

[0059] The pushing assembly 44 includes a mounting frame 441 that is movable along a direction approaching or moving away from the shell 41 and is arranged on the outside of the shell 41, a pushing plate 442 that is slidably arranged on the mounting frame 441 along the length direction of the shell 41 and is used to push and position the magnet 5, an extension rod 443 that is slidably arranged on the mounting frame 441 along the length direction of the shell 41, a pushing bevel block 444 that is slidably arranged on the extension rod 443 and is used to push the first driving ring 433 to slide with the movement of the mounting frame 441, and an elastic member 445 that is arranged on the extension rod 443 and is used to force the pushing bevel block 444 to abut against the first driving ring 433.

[0060] In this embodiment, the detection probe 423 is arranged to cooperate with the mounting seat 421 and the support rod 422 to extend into the shaft hole 51 to detect the magnetic induction intensity at the axis of the shaft hole 51;

[0061] By setting up a movable mounting frame 441 and a push plate 442 and an extension rod 443 slidingly arranged thereon, the push plate 442 and the extension rod 443 can slide radially and axially in the detection channel 411, so that the push plate 442 can push the magnet 5 to slide in the detection channel 411 so that the position corresponding to the maximum magnetic induction intensity thereon is positioned with the detection component 42, and the extension rod 443 can drive the push bevel block 444 to cooperate with the elastic member 445 to force the first drive ring 433 to slide, thereby adjusting the distance between the first positioning rods 431 and driving the first positioning rod 431 to clamp the outer ring surface of the magnet 5. This linkage structure is cleverly designed and easy to use, reducing the use of the drive source and the volume of the detection mechanism 4.

[0062] In detail, when in use, when the push plate 442 slides axially in the detection channel 411, the position corresponding to the maximum magnetic induction intensity on the magnet 5 is positioned with the detection component 42, and when the extension rod 443 slides axially in the detection channel 411, the first drive ring 433 is pushed to adjust its initial position, and the distance between the first positioning rods 431 is adjusted to adapt to magnets 5 of different sizes; when the mounting frame 441 moves the push plate 442 and the extension rod 443 moves radially in the detection channel 411, the push plate 442 moves the magnet 5 After being confined in the detection channel 411, the bevel block 444 is pushed to force the first drive ring 433 to slide until the first drive ring 433 drives the first positioning rod 431 to slide radially inward to clamp the outer ring surface of the magnet 5, and the elastic member 445 is compressed, so that the position corresponding to the maximum magnetic induction intensity of the magnet 5 and the axial position of the magnet 5 are located at the same time, and then the support rod 422 is rotated to make the detection probe 423 and the axis of the magnet 5 coincide, and the slider slides to make the detection probe 423 move in the shaft hole 51 to the position corresponding to the maximum magnetic induction intensity of the magnet 5 for focused detection.

[0063] It should be noted that the support rod 422 is an arc-shaped structure. When the detection probe 423 rotates with the support rod 422 toward the inner wall of the detection channel, the support rod 422 with an arc-shaped structure is more closely attached to the inner wall of the detection channel 411, thereby enabling the support rod 422 to better avoid the magnet 5 moving in the detection channel 411.

[0064] The detection probe 423 is a Hall probe, which can detect the maximum magnetic induction intensity on the axis of the shaft hole 51 and display it through the Tesla meter 424 set on the machine 1, thereby detecting and displaying the maximum magnetic induction intensity of the magnet 5;

[0065] The push plate 442 is provided with a notch 4421 for avoiding the detection probe 423, so that the detection probe 423 can completely move inside and outside the shaft hole 51, making the detection more complete and accurate;

[0066] In addition, the elastic member 445 is a coil spring, a leaf spring, etc., and both the elastic member 445 and the installation method thereof are existing technologies and will not be described in detail here.

[0067] Further, if Figure 11-Figure 12 As shown, the magnetizing mechanism 2 includes a shell 21 which is arranged on the machine 1 and has a magnetizing channel 211 formed therethrough, a magnetizing coil 22 which is arranged in the magnetizing channel 211 and is used to magnetize the magnet 5, and a second positioning component 23 which is arranged in the magnetizing channel 211 and is used to position the magnet 5 so that the axis thereof coincides with the axis of the magnetizing coil 22.

[0068] In this embodiment, the second positioning component 23 is provided to position and coincide the axis of the magnet 5 in the magnetizing channel 211 on the housing 21 with the axis of the magnetizing coil 22, thereby improving the magnetizing effect of the magnetizing coil 22 on the magnet 5 and the magnetizing success rate.

[0069] It should be noted that the shell 21 is made of Permalloy or iron-aluminum alloy, has high magnetic permeability, and can guide the magnetic field lines of the external magnetic field to pass through it, thereby reducing the magnetic field lines of the external magnetic field entering the magnetization channel 211 and interfering with the magnetic field generated by the magnetization coil 22.

[0070] Further, if Figure 12-13 As shown, the second positioning assembly 23 includes at least three second positioning rods 231 that are slidably arranged on the inner wall of the magnetizing channel 211 at equal intervals along the circumference of the magnetizing coil 22 and are located in the magnetizing coil 22, a second driving rod 232 arranged on the second positioning rod 231, a second driving ring 233 that is slidably arranged on the inner wall of the magnetizing channel 211 along the axial direction, and a second driving groove 234 that is arranged on the second driving ring 233 and is slidably connected to the second driving rod 232, and when the second driving ring 233 slides, the second driving groove 234 is used to drive the second positioning rod 231 to slide radially with the second driving rod 232 until each second positioning rod 231 clamps the outer annular surface of the magnet 5, thereby aligning the positioning magnet 5 with the axis of the magnetizing coil 22.

[0071] In this embodiment, at least three second positioning rods 231 are provided to cooperate with the second driving rod 232, the second driving ring 233 and the second driving groove 234 to realize radial sliding, thereby clamping the outer ring surface of the magnet 5 and positioning the axial position of the magnet 5, and clamping and positioning magnets 5 of various sizes, thereby improving the versatility of the device.

[0072] In detail, when the second drive ring 233 slides and forces the second positioning rod 231 to slide radially through the second drive groove 234 and the second drive rod 232, the distance between the first positioning rods 431 can be adjusted, so that magnets 5 of different sizes can enter between multiple second positioning rods 231 for sliding transportation. When the second drive ring 233 slides and forces the second positioning rod 231 to slide radially inward until the outer ring surface of the magnet 5 is clamped, the magnet 5 can be positioned at the axial position of the magnetizing coil 22, thereby achieving the coincidence of the axis of the positioning magnet 5 and the axis of the magnetizing coil 22.

[0073] It should be noted that one end of the second positioning rod 231 close to the feeding mechanism 3 is bent radially outward to form a second guide rod 2311, which is convenient for guiding the feeding mechanism 3 to feed the magnet 5 between the plurality of second positioning rods 231;

[0074] In addition, a power structure for driving the second driving ring 233 to slide is disposed in the housing 41 , and the power structure may be a cylinder or a screw guide rail, etc.

[0075] Further, if Figure 1 as well as Fig.11 As shown, there are two detection mechanisms 4, which are symmetrically arranged on both sides of the magnetizing mechanism 2. The magnetizing mechanism 2 also includes a conveying assembly 24 arranged on the outer side of the housing 21 and used for alternately conveying the magnetized magnets 5 into the two detection mechanisms 4.

[0076] The conveying assembly 24 includes a conveying plate 241 movably arranged between two detection mechanisms 4, two carrying slots 242 arranged on the conveying plate 241 and used to carry the magnet 5, a supporting plate 243 arranged on the machine table 1 and used to support the magnet 5 in the carrying slots 242, and two connecting slots 244 arranged on the supporting plate 243 and used to connect each carrying slot 242 with each detection mechanism 4, and when the conveying plate 241 moves to transport the magnet 5 in a carrying slot 242 to a corresponding detection mechanism 4, the other carrying slot 242 is aligned with the magnetization channel 211.

[0077] In this embodiment, by providing two detection mechanisms 4 in cooperation with the conveying assembly 24, the detection efficiency is improved, thereby improving the continuity and efficiency of production.

[0078] In detail, by reciprocating the conveying plate 241 between the two detection mechanisms 4, the two carrying grooves 242 on the conveying plate 241 are alternately aligned with the magnetizing channel 211 and the connecting groove, so that the magnets 5 in the magnetizing channel 211 are alternately output and input into the connecting groove 244 and then enter the detection mechanism 4, thereby realizing the alternating conveyance of the magnets 5 in the two detection mechanisms 4.

[0079] Further, if Figure 14-15As shown, the feeding mechanism 3 includes a vibration plate 31 which is vibrated and arranged on the outside of the machine 1 and has a disc structure, a conveying track 32 which is spirally arranged on the inner wall of the vibration plate 31 and cooperates with the vibration of the vibration plate 31 to spirally convey the magnet 5 upward, a discharge channel 33 which is connected to the conveying track 32 at one end and passes through the outside of the vibration plate 31 at the other end and is connected to the magnetizing mechanism 2, and a flip plate 34 which is arranged on the conveying track 32 and is used to flip the magnet 5 until the axes between the magnet 5 and the discharge channel 33 are parallel to each other.

[0080] In this embodiment, the magnets 5 are arranged and transported upward by cooperating with the conveying track 32 during the vibration of the vibration plate 31, and then the magnets 5 arranged and transported are uniformly flipped to be parallel to the axis between the discharge channel 33 by cooperating with the flip plate 34. Then, the magnets 5 are introduced into the magnetizing mechanism 2 through the discharge channel 33.

[0081] It should be noted that the feeding mechanism 3 also includes a discharge box 35 that can be opened and used to install the vibration plate 31, and a sound insulation cotton layer 36 arranged between the discharge box 35 and the vibration plate 31, so as to reduce the noise during the operation of the device; the vibration plate 31 is driven to vibrate by a vibrator, and the vibrator itself and the installation method are both existing technologies, and are arranged between the vibration plate 31 and the discharge box 35, but are not shown in the drawings, and will not be described in detail here;

[0082] In addition, the application itself does not limit the specific structure of the flip plate 34, and only one structure is provided below for reference, for example:

[0083] The flip plate 34 includes a first flip section 341 which is tilted upward along the conveying direction of the conveying track 32, and a second flip section 342 which is tilted upward on the side of the first flip section 341 away from the vibration plate 31 and whose tilt angle gradually increases along the conveying direction of the conveying track 32 until it is vertical, so that the magnet 5 whose axis is perpendicular to the conveying direction of the conveying track 32 and in a horizontal state is gradually flipped to a vertical state through the second flip section 342 during the conveying process, and the magnet 5 in the vertical state falls to the conveying track 32 through the end of the first flip section 341 during the conveying process and dumps onto the conveying track 32, so that the axis of the magnet 5 is parallel to the conveying direction of the conveying track 32 and the axis of the discharge channel 33.

[0084] Further, if Figure 1 As shown, an inclined table 11 is provided at the upper end of the machine 1, and the magnetizing mechanism 2 and the detection mechanism 4 are tiltedly arranged on the inclined table 11 from top to bottom, so that the magnet 5 can slide into the magnetizing mechanism 2 and the detection mechanism 4 from top to bottom under the action of gravity.

[0085] In this embodiment, by providing an inclined table 11, the magnets 5 loaded by the loading mechanism 3 into the magnetizing mechanism 2 are automatically transported obliquely downward under the action of gravity, so that the structure for transporting the magnets 5 is simple and easy to use.

[0086] Embodiment 2

[0087] like Figure 16-18 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0088] Furthermore, the sorting component 45 includes two supporting plates 455 movably arranged on the machine 1, a plurality of supporting rods 456 arranged in an array on the supporting plates 455 and used to support the axial holes 51 on the magnet 5, a conveying rod 457 rotatably arranged on the outer side of each first positioning rod 431 and used to convey the detected magnet 5 to the supporting rod 456, and a driving member 458 arranged on the machine 1 and used to drive each conveying rod 457 to swing to the same supporting plate 455 at the same time.

[0089] In this embodiment, a rotating conveying rod 457 is provided to cooperate with a driving member 458 so that the conveying rod 457 can be swung to the position corresponding to the carrying rod 456 on the two carrying plates 455, and then the qualified magnets 5 and the unqualified magnets 5 detected by the detection component 42 are respectively conveyed to the carrying rods 456 of the two carrying plates 455 for positioning and neatly stacking through the conveying rod 457, so as to achieve sorting, facilitate the later packaging of the qualified magnets 5 and the recycling and reuse of the unqualified magnets 5, and at the same time, the carrying rod 456 connected to the outer side of the first positioning rod 431 is rotated so that the distance between the carrying rods 456 is larger than the distance between the first positioning rods 431, thereby avoiding the distance change between the carrying rods 456 when rotating and conveying the magnets 5, which interferes with the conveyance of the magnets.

[0090] In detail, when the detection component 42 detects that the magnetized magnet 5 is a qualified magnet 5, the driving member 458 drives the conveying rod 457 to swing to the position corresponding to the carrying rod 456 on a carrying plate 455 at the same time, and then the conveying rod 457 directly positions and conveys the magnet 5 positioned by the first positioning rod 431 to the carrying rod 456 on the carrying plate 455; when the detection component 42 detects that the magnetized magnet 5 is an unqualified magnet 5, the driving member 458 drives the conveying rod 457 to swing to the position corresponding to the carrying rod 456 on another carrying plate 455 at the same time; when a row of carrying rods 456 are full of magnets 5, the carrying plate 455 moves so that the conveying rod 457 can convey the magnet 5 to the next row of carrying rods 456.

[0091] It should be noted that the conveying rod 457 is connected to the outer side of the first positioning rod 431 through a spherical universal joint to facilitate the rotation of the conveying rod 457 .

[0092] In addition, the present application does not limit the specific structure of the driving member 458, and only provides one structure for reference, for example:

[0093] The driving member 458 includes a connecting ring 4581 slidably connected to the outside of each conveying rod 457 and a push plate 4582 reciprocatingly arranged on the machine 1 and connected to the connecting ring 4581, thereby driving each conveying rod 457 through the reciprocating push plate 4582 and swinging along with the connecting ring 4581.

[0094] Working process:

[0095] First, the magnet 5 to be magnetized is transported to the magnetizing mechanism 2 through the feeding mechanism 3 for magnetization;

[0096] Next, after the magnetized magnet 5 by the magnetizing mechanism 2 enters the housing 41 and cooperates with the pushing component 44 to restrict the magnet 5 in the detection channel 411, the first positioning component 43 is cooperated to locate the axis of the magnet 5, so that the detection component 42 can accurately detect the magnetic induction intensity on the magnet 5 and determine the position on the magnet 5 corresponding to the maximum magnetic induction intensity;

[0097] Then, the first positioning component 43 is released and the pushing component 44 is moved to push the magnet 5 until the position on the magnet 5 corresponding to the maximum magnetic induction intensity is positioned with the detection component 42, so that the detection component 42 can focus on the position on the magnet 5 corresponding to the maximum magnetic induction intensity when performing detection again, so as to avoid the overall detection speed of the magnet 5 being too fast, which affects the detection and confirmation of the maximum magnetic induction intensity;

[0098] Finally, after the detected magnets 5 enter the sorting assembly 45, the qualified magnets 5 and the unqualified magnets 5 are sorted, completing the magnetization production and detection.

[0099] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0100] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0101] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fully automatic detection device for the magnetic properties of NdFeB, characterized in that: include: A machine (1), a magnetizing mechanism (2) arranged on the machine (1) and used to magnetize a magnet (5), a feeding mechanism (3) arranged outside the machine (1) and used to transport the magnet (5) into the magnetizing mechanism (2), and a detection mechanism (4) arranged outside the magnetizing mechanism (2) and used to detect whether the magnet (5) is qualified after magnetization; The detection mechanism (4) comprises a housing (41) disposed on the machine platform (1) and having a detection channel (411) formed therethrough, a detection component (42) movably disposed in the detection channel (411) and used to detect the magnetic induction intensity of the magnet (5), a first positioning component (43) disposed in the detection channel (411) and used to locate the axial position of the magnet (5), a pushing component movably disposed in the detection channel (411) and used to push the magnet (5) until it is located at a position of maximum magnetic induction intensity, and a sorting component (45) disposed outside the housing (41) and used to sort qualified magnets (5) from unqualified magnets (5); The first positioning assembly (43) comprises at least three first positioning rods (431) slidably arranged on the inner wall of the detection channel (411) at equal intervals along the circumference of the housing (41), a first driving rod (432) arranged on the first positioning rod (431), a first driving ring (433) slidably arranged on the inner wall of the detection channel (411) along the axial direction, and a first driving groove (434) arranged on the first driving ring (433) and slidably connected to the first driving rod (432), and when the first driving ring (433) slides, the first driving groove (434) is used to drive the first positioning rod (431) to slide radially along the first driving rod (432) until each of the first positioning rods (431) clamps the outer annular surface of the magnet (5), thereby locating the axial position of the magnet (5); The detection assembly (42) comprises a mounting seat (421) slidably arranged on the inner wall of the detection channel (411) along the axial direction, a support rod (422) rotatably arranged on the mounting seat (421), and a detection probe (423) arranged on the support rod (422) and inserted into the axial hole (51) of the magnet (5) as the support rod (422) rotates and the mounting seat (421) slides; The pushing assembly comprises a mounting frame (441) arranged outside the housing (41) and movable in a direction approaching or moving away from the housing (41), a pushing plate (442) slidably arranged on the mounting frame (441) along the length direction of the housing (41) and used to push and position the magnet (5), an extension rod (443) slidably arranged on the mounting frame (441) along the length direction of the housing (41), a pushing inclined block (444) slidably arranged on the extension rod (443) and used to push the first driving ring (433) to slide along with the movement of the mounting frame (441), and an elastic member (445) arranged on the extension rod (443) and used to force the pushing inclined block (444) to abut against the first driving ring (433).

2. The fully automatic detection device for the magnetic properties of NdFeB according to claim 1 is characterized in that: The sorting component (45) comprises a discharge trough (451) arranged on the machine (1) and connected to an end of the detection channel (411) away from the magnetization channel (211), a stop bar (452) arranged in the discharge trough (451) and used to separate the lower end of the discharge trough (451) into a finished product trough (4511) and a defective product trough (4512), and a guide plate (453) rotatably arranged on the stop bar (452) and used to guide the magnet (5) into the finished product trough (4511) or the defective product trough (4512).

3. The fully automatic detection device for the magnetic properties of NdFeB according to claim 1 is characterized in that: The sorting component (45) includes two supporting plates movably arranged on the machine (1), a plurality of supporting rods (456) arranged in an array on the supporting plates and used to support the axial holes (51) on the magnets (5), a conveying rod (457) rotatably arranged on the outside of each of the first positioning rods (431) and used to convey the magnets (5) after detection to the supporting rods (456), and a driving member (458) arranged on the machine (1) and used to drive each of the conveying rods (457) to swing to the same supporting plate at the same time.

4. The fully automatic detection device for the magnetic properties of NdFeB according to claim 1 is characterized in that: The magnetizing mechanism (2) comprises a shell (21) arranged on the machine platform (1) and having a magnetizing channel (211) formed therethrough, a magnetizing coil (22) arranged in the magnetizing channel (211) and used for magnetizing the magnet (5), and a second positioning component (23) arranged in the magnetizing channel (211) and used for positioning the magnet (5) so that the axis thereof coincides with the axis of the magnetizing coil (22).

5. The fully automatic detection device for the magnetic properties of NdFeB according to claim 4 is characterized in that: The second positioning assembly (23) comprises at least three second positioning rods (231) slidably arranged at equal intervals along the circumference of the magnetizing coil (22) on the inner wall of the magnetizing channel (211) and located inside the magnetizing coil (22), a second driving rod (232) arranged on the second positioning rod (231), a second driving ring (233) slidably arranged on the inner wall of the magnetizing channel (211) along the axial direction, and a second driving groove (234) arranged on the second driving ring (233) and slidably connected to the second driving rod (232), and when the second driving ring (233) slides, the second driving groove (234) is used to drive the second positioning rod (231) to slide radially along the second driving rod (232) until each of the second positioning rods (231) clamps the outer annular surface of the magnet (5), thereby positioning the magnet (5) to coincide with the axis of the magnetizing coil (22).

6. The fully automatic detection device for the magnetic properties of NdFeB according to claim 4 is characterized in that: The number of the detection mechanisms (4) is two, and the two detection mechanisms (4) are symmetrically arranged on both sides of the magnetizing mechanism (2). The magnetizing mechanism (2) further comprises a conveying component (24) arranged on the outside of the housing (21) and used for alternately conveying the magnetized magnets (5) into the two detection mechanisms (4); The conveying assembly (24) comprises a conveying plate (241) movably arranged between the two detection mechanisms (4), two carrying slots (242) arranged on the conveying plate (241) and used to carry the magnet (5), a supporting plate (243) arranged on the machine platform (1) and used to support the magnet (5) in the carrying slot (242), and two connecting slots (244) arranged on the supporting plate (243) and used to connect each of the carrying slots (242) and each of the detection mechanisms (4), and when the conveying plate (241) moves to convey the magnet (5) in one of the carrying slots (242) to a corresponding one of the detection mechanisms (4), the other carrying slot (242) is aligned with the magnetization channel (211).

7. The fully automatic detection device for the magnetic properties of NdFeB according to claim 1 is characterized in that: The feeding mechanism (3) comprises a vibrating plate (31) which is vibratingly arranged on the outside of the machine platform (1) and has a disc structure, a conveying track (32) which is spirally arranged on the inner wall of the vibrating plate (31) and is used to spirally convey the magnet (5) upward in cooperation with the vibration of the vibrating plate (31), a discharge channel (33) which has one end connected to the conveying track (32) and the other end extending through the outside of the vibrating plate (31) and is connected to the magnetizing mechanism (2), and a flip plate (34) which is arranged on the conveying track (32) and is used to flip the magnet (5) until the axes between the magnet (5) and the discharge channel (33) are parallel to each other.

8. The fully automatic detection device for the magnetic properties of NdFeB according to claim 1 is characterized in that: An inclined table top (11) is provided at the upper end of the machine platform (1), and the magnetizing mechanism (2) and the detection mechanism (4) are arranged on the inclined table top (11) in an inclined manner from top to bottom, so that the magnet (5) can slide into the magnetizing mechanism (2) and the detection mechanism (4) in an inclined manner from top to bottom under the action of gravity.

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