Magnet appearance detection device

Abstract

The utility model discloses a magnet appearance detection device relates to magnet detection technical field, including equipment bearing platform, base and multistage damping assembly, multistage damping assembly contains: the damping unit of upper layer is constituted by annular array distribution's fluorine rubber damping block, and each damping block top is fixed on the bottom surface of equipment bearing platform through bolt, is used for absorbing high frequency micro amplitude vibration, the damping unit of middle layer is established below the upper layer unit, includes the elastic damper of oblique cross arrangement, and the both ends of elastic damper are connected damping block bottom and lower layer support plate respectively through hinged seat, and its acute angle design decomposes horizontal vibration, the damping unit of lower layer is constituted by the honeycomb aluminum filling layer of support plate bottom and the wire mesh damping pad of fixedly being equipped with through adhesive, and honeycomb aluminum layer disperses stress, and wire mesh dissipates low frequency energy through friction. This multistage damping structure cooperatively inhibits environmental vibration conduction, reduces equipment bearing platform amplitude, and reduces the image trailing of high-precision detection.

Description

Technical Field

[0001] This utility model relates to the field of magnet detection technology, specifically a magnet appearance detection device. Background Technology

[0002] For magnets, especially high-performance permanent magnets such as neodymium iron boron and samarium cobalt, the appearance quality (such as chipping, microcracks, and scratches) is crucial to their performance and lifespan. This requires the detection device to have extremely high optical resolution (often at the micrometer level) in order to accurately identify these minute defects.

[0003] However, such inspection equipment is typically deployed in industrial environments with multiple vibration sources (such as mechanical operation, personnel movement, and material handling). These environmental vibrations are directly transmitted to the inspection table, causing significant vibrations. This table vibration leads to relative movement between the inspected magnet and the high-precision camera, resulting in image blurring during camera exposure and severely reducing image clarity. To address this, we propose a magnet appearance inspection device. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by proposing a magnet appearance inspection device.

[0005] In order to solve the above-mentioned technical problems, the present invention solves the problem of relative motion between the tested magnet and the high-precision camera caused by vibration in the prior art through the following technical solution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A magnet appearance inspection device includes an equipment support platform and a base, and a multi-stage vibration damping assembly disposed between the equipment support platform and the base. The multi-stage vibration damping assembly includes: an upper vibration damping unit composed of several fluororubber damping blocks arranged in a ring array, with the top of each damping block fixed to the bottom surface of the equipment support platform by bolts; a middle vibration damping unit disposed below the upper vibration damping unit, including elastic dampers arranged at an inclined cross, with the two ends of the elastic dampers connected to the bottom of the damping blocks of the upper vibration damping unit and the support plate of the lower vibration damping unit respectively through hinge seats, and the angle between the axis of the elastic damper and the horizontal plane being an acute angle; the bottom surface of the support plate is provided with a honeycomb aluminum filling layer, and a metal wire mesh damping pad is fixed below the honeycomb aluminum filling layer by adhesive.

[0008] Preferably, there are two sets of elastic dampers, and each set of elastic dampers is arranged in a double V-shape symmetrical arrangement.

[0009] Preferably, the two sets of elastic dampers are projected at a 90° orthogonal intersection.

[0010] Preferably, a height difference is left between the projection intersections of the two sets of elastic dampers to prevent motion interference.

[0011] Preferably, a silicon-based damping gel is injected into the pores of the honeycomb aluminum filling layer.

[0012] Preferably, the equipment support platform has sunken mounting slots at its four corners, with counterweight adjustment blocks embedded in the mounting slots, and the counterweight adjustment blocks are locked by threaded pressure rods.

[0013] Preferably, a bracket is fixedly provided on the outer side of the top of the mounting groove, a threaded pressure rod passes through the top of the bracket and is threadedly connected to the bracket, a pressure plate is rotatably provided at the bottom of the threaded pressure rod, and a handle is fixedly provided at the top of the threaded pressure rod.

[0014] Preferably, the metal wire mesh damping pad is woven from copper wire and stainless steel wire.

[0015] Preferably, the outer side of the threaded pressure bar is coated with a tungsten carbide coating.

[0016] Preferably, a rubber pad is fixedly provided at the bottom of the pressure plate, and the bottom of the rubber pad abuts against the counterweight adjustment block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention effectively suppresses environmental vibration transmission through a multi-layered cascaded vibration reduction structure: the upper layer of fluororubber damping blocks directly absorbs the high-frequency, low-amplitude vibrations of the equipment's platform; the middle layer of inclined, cross-arranged elastic dampers forms an elastic support network, using the horizontal component force generated by their tilt angle to offset lateral displacement, while achieving multi-directional vibration isolation through a double-V-shaped symmetrical arrangement and a 90° orthogonal cross design, with the height difference at the cross points preventing structural interference; the lower layer of honeycomb aluminum filling layer, combined with silicon-based damping gel and metal mesh damping pads, dissipates low-frequency vibration energy through material deformation and friction. This synergistic design reduces the amplitude of the equipment's platform, effectively eliminates image ghosting during high-precision camera exposure, and ensures accurate imaging of micron-level defects such as chipped edges and microcracks on the magnet surface.

[0019] To address the differences in vibration characteristics caused by variations in material weight in industrial settings, the device incorporates recessed counterweight adjustment mechanisms at the four corners of the equipment's support platform. Rotating a throttle drives threaded pressure rods coated with tungsten carbide, which in turn actuates pressure plates with embedded rubber pads at their bottom, applying controllable pressure to the counterweight adjustment blocks. This allows for independent fine-tuning of the counterweights at each corner of the platform. This design enables the device to quickly adapt to the testing requirements of magnets of different sizes, actively balancing the platform's overturning moment caused by uneven weight distribution of the measured object, maintaining the stability of the vibration damping system under dynamic loads, and preventing the damping effect from being weakened by weight changes. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the equipment support platform of this utility model;

[0023] Figure 3 This is a schematic diagram of the multi-stage vibration damping component of this utility model;

[0024] Figure 4 This is a top view schematic diagram of the distribution of the elastic damper of this utility model;

[0025] Figure 5 This is a side view schematic diagram of the distribution of the elastic damper of this utility model;

[0026] Figure 6 This is a schematic diagram of the internal structure of the bracket of this utility model;

[0027] Figure 7 This is a schematic diagram of the pressure plate part of this utility model.

[0028] Drawing number explanation: 1. Equipment bearing platform; 2. Base; 3. Damping block; 4. Elastic damper; 5. Hinge seat; 6. Support plate; 7. Honeycomb aluminum filling layer; 8. Metal wire mesh damping pad; 9. Mounting groove; 10. Counterweight adjustment block; 11. Bracket; 12. Threaded pressure rod; 13. Pressure plate; 14. Thruster; 15. Rubber pad. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. Example

[0030] Please see Figures 1-7A magnet appearance inspection device includes an equipment support platform 1 and a base 2, and a multi-stage vibration damping assembly disposed between the equipment support platform 1 and the base 2. The multi-stage vibration damping assembly includes: an upper vibration damping unit composed of several fluororubber damping blocks 3 arranged in a ring array, with the top of each damping block 3 fixed to the bottom surface of the equipment support platform 1 by bolts, whose high damping characteristics directly absorb the high-frequency micro-amplitude vibrations of the equipment support platform 1; and a middle vibration damping unit disposed below the upper vibration damping unit, including elastic dampers 4 arranged in an inclined cross pattern. The elastic damper 4 is connected at both ends to the bottom of the damping block 3 of the upper vibration damping unit and the support plate 6 of the lower vibration damping unit via hinged seats 5. The axis of the elastic damper 4 makes an acute angle with the horizontal plane, decomposing the horizontal vibration into axial compressive force and dissipating energy through the elastic deformation of the elastic damper 4. The bottom surface of the support plate 6 is provided with a honeycomb aluminum filling layer 7, whose porous structure disperses stress through cell wall deformation. A metal wire mesh damping pad 8 is fixed below the honeycomb aluminum filling layer 7 with adhesive, which converts low-frequency vibration into heat energy through metal wire friction. The three-layer structure works together to form a broadband vibration damping barrier.

[0031] The following describes some embodiments of this application in detail with reference to the accompanying drawings:

[0032] Please see Figures 1-7 This invention effectively suppresses environmental vibration transmission through a multi-layered cascaded vibration reduction structure: the upper fluororubber damping block 3 directly absorbs the high-frequency micro-amplitude vibration of the equipment bearing platform 1; the middle layer of inclined and cross-arranged elastic dampers 4 forms an elastic support network, using the horizontal component force generated by their tilt angle to offset lateral displacement, while achieving multi-directional vibration isolation through double V-shaped symmetrical arrangement and 90° orthogonal intersection design, and the height difference at the intersection points avoids structural interference; the lower honeycomb aluminum filling layer 7, combined with silicon-based damping gel and metal mesh damping pads 8, dissipates low-frequency vibration energy through material deformation and friction. This collaborative design significantly reduces the amplitude of the detection platform, effectively eliminates image ghosting during high-precision camera exposure, and ensures accurate imaging of micron-level defects such as chipped edges and microcracks on the magnet surface.

[0033] The system comprises two sets of elastic dampers 4, each arranged symmetrically in a double V-shape, forming an elastic support network. The V-shaped layout generates centripetal constraint force when the group of elastic dampers 4 bears vertical loads, enhancing platform stability. The symmetrical design evenly distributes vibration energy, preventing platform swaying caused by stress concentration on one side. Furthermore, the two sets of elastic dampers 4 project at a 90° orthogonal intersection, forming a spatial mesh-like vibration reduction system. The orthogonal structure ensures that the group of elastic dampers 4 generates equivalent mechanical impedance in both the X and Y horizontal directions, eliminating directional blind spots in vibration transmission and achieving omnidirectional vibration isolation. Further, a height difference is maintained between the intersection points of the two sets of elastic dampers 4 projections to prevent motion interference, and axial misalignment prevents radial collisions of the elastic dampers 4 during compression-rebound processes. This design ensures interference-free coordinated motion of the double V-shaped orthogonal elastic damper groups 4 under complex vibration conditions.

[0034] In this technical solution, silicon-based damping gel is injected into the pores of the honeycomb aluminum filling layer 7. The high fluidity of the gel fills the gaps in the aluminum honeycomb cavity and dissipates the energy of low- and medium-frequency vibration through viscous shear. Its temperature stability can adapt to changes in the industrial environment and prevent the damping performance from drifting.

[0035] In this technical solution, the equipment support platform 1 has sunken mounting slots 9 at its four corners, and counterweight adjustment blocks 10 are embedded in the mounting slots 9. The counterweight adjustment blocks 10 are locked by threaded pressure rods 12. This mechanism allows the platform's center of gravity to be adjusted for magnets of different weights: increasing the counterweight adjustment blocks 10 can reduce the system's natural frequency and adapt to heavy workpieces; reducing the counterweight can improve the system's response speed and optimize the stability of light magnet detection.

[0036] Meanwhile, a bracket 11 is fixedly installed on the outer side of the top of the mounting groove 9. A threaded pressure rod 12 passes through the top of the bracket 11 and is threadedly connected to the bracket 11. A pressure plate 13 is rotatably installed at the bottom of the threaded pressure rod 12, and a handle 14 is fixedly installed at the top of the threaded pressure rod 12. Rotating the handle 14 drives the pressure rod to move downward, causing the bottom pressure plate 13 to abut against the counterweight adjustment block 10. The planar contact design of the pressure plate 13 ensures uniform pressure distribution and avoids local deformation of the counterweight adjustment block 10; the handle 14 provides leverage to achieve quick locking with one hand.

[0037] In addition, the outer side of the threaded pressure rod 12 is coated with a tungsten carbide coating, which has ultra-high hardness to resist thread wear caused by frequent tightening, avoid the loosening of the counterweight caused by thread failure, and extend the service life of the adjustment mechanism.

[0038] It is worth noting that a rubber pad 15 is fixedly provided at the bottom of the pressure plate 13. The bottom of the rubber pad 15 abuts against the counterweight adjustment block 10, providing flexible cushioning when the counterweight adjustment block 10 is pressed. The elastic deformation of the pad compensates for the unevenness of the surface of the counterweight adjustment block 10, ensuring full contact surface pressing; at the same time, it isolates the collision noise between metals and improves the quietness of operation.

[0039] In this technical solution, the metal wire mesh damping pad 8 is woven from copper wire and stainless steel wire. The high thermal conductivity of copper wire accelerates heat dissipation, while stainless steel wire provides rigid support. The friction between dissimilar metal interfaces generates nonlinear damping force, and its anti-oxidation properties ensure consistent performance under long-term vibration conditions.

[0040] In this technical solution, the elastic damper is composed of a spring and a damping telescopic cylinder.

[0041] The operating procedure of this device is as follows:

[0042] The high-frequency vibration in the industrial site is first transmitted to the equipment carrying platform 1. The annular array of fluororubber damping blocks 3 at the bottom of the platform, with its high damping characteristics, converts the high-frequency micro-amplitude vibration energy into heat energy through molecular chain friction, thus suppressing the platform's own resonance.

[0043] The middle layer of elastic dampers 4 is arranged in an acute-angled, intersecting pattern. When vibration is transmitted to the elastic dampers 4, their inclined structure decomposes the horizontal vibration into axial compressive force and radial component force: the axial force is absorbed by the elastic deformation of the elastic dampers 4; the radial component force cancels each other out due to the symmetrical arrangement.

[0044] During low-frequency vibration, the vibration energy is transferred to the honeycomb aluminum filling layer 7 at the bottom of the support plate 6. Its hexagonal lattice disperses stress through the bending deformation of the cell wall. The silicon-based damping gel injected into the lattice generates viscous shear resistance, converting the mid-to-low frequency vibration into heat energy. The residual vibration is conducted through the adhesive to the copper-stainless steel wire mesh damping pad 8. The dissimilar metal wires generate interfacial friction in the relative displacement, further converting the low-frequency energy into heat dissipation.

[0045] When detecting magnets of different weights, the tungsten carbide coated threaded pressure rod 12 is driven to move downward by rotating the handle 14 on the four-corner bracket 11. This pushes the pressure plate 13 with rubber pads 15 at the bottom to press the counterweight adjustment block 10 in the recessed mounting groove 9. Increasing the counterweight adjustment block 10 can lower the overall center of gravity of the system and counteract the overturning torque caused by heavy magnets. Reducing the counterweight can improve the system's response sensitivity and adapt to the detection of light magnets.

[0046] In this device, the overall mass distribution of the system is changed by adjusting the counterweight, thereby adjusting the natural frequency of the device to avoid resonance with the external vibration frequency and ensure that the vibration reduction system is in the efficient operating range under different loads.

[0047] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A magnet appearance inspection device, comprising an equipment support platform (1) and a base (2), characterized in that, Also includes: A multi-stage vibration damping assembly is disposed between the equipment support platform (1) and the base (2), the multi-stage vibration damping assembly comprising: Upper vibration damping unit: It consists of several fluororubber damping blocks (3) arranged in a ring array, and the top of each damping block (3) is fixed to the bottom surface of the equipment bearing platform (1) by bolts; The middle layer vibration damping unit is located below the upper layer vibration damping unit and includes an elastic damper (4) arranged at an angle. The two ends of the elastic damper (4) are connected to the bottom of the damping block (3) of the upper layer vibration damping unit and the support plate (6) of the lower layer vibration damping unit respectively through the hinge seat (5). The axis of the elastic damper (4) makes an acute angle with the horizontal plane. The bottom surface of the support plate (6) is provided with a honeycomb aluminum filling layer (7), and a metal wire mesh damping pad (8) is fixed below the honeycomb aluminum filling layer (7) by an adhesive.

2. The magnet appearance inspection device according to claim 1, characterized in that: The elastic damper (4) consists of two sets, and each set of elastic dampers (4) is arranged in a double V-shape symmetrical arrangement.

3. The magnet appearance inspection device according to claim 2, characterized in that: The two sets of elastic dampers (4) are projected at 90° orthogonal intersection.

4. The magnet appearance inspection device according to claim 3, characterized in that: A height difference is left between the projection intersections of the two sets of elastic dampers (4) to prevent motion interference.

5. The magnet appearance inspection device according to claim 1, characterized in that: Silicon-based damping gel is injected into the pores of the honeycomb aluminum filling layer (7).

6. The magnet appearance inspection device according to claim 1, characterized in that: The equipment carrying platform (1) has sunken mounting slots (9) at its four corners. A counterweight adjustment block (10) is embedded in the mounting slot (9). The counterweight adjustment block (10) is locked by a threaded pressure rod (12).

7. A magnet appearance inspection device according to claim 6, characterized in that: A bracket (11) is fixedly provided on the outer side of the top of the mounting groove (9). The threaded pressure rod (12) passes through the top of the bracket (11) and is threadedly connected to the bracket (11). A pressure plate (13) is rotatably provided at the bottom end of the threaded pressure rod (12). A throttle (14) is fixedly provided at the top of the threaded pressure rod (12).

8. The magnet appearance inspection device according to claim 1, characterized in that: The metal wire mesh damping pad (8) is woven from copper wire and stainless steel wire.

9. A magnet appearance inspection device according to claim 6, characterized in that: The outer side of the threaded pressure bar (12) is coated with a tungsten carbide coating.

10. A magnet appearance inspection device according to claim 7, characterized in that: The bottom of the pressure plate (13) is fixedly provided with a rubber pad (15), and the bottom of the rubber pad (15) abuts against the counterweight adjustment block (10).

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