CN115097363A - Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste - Google Patents

Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste Download PDF

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Publication number
CN115097363A
CN115097363A CN202211037295.0A CN202211037295A CN115097363A CN 115097363 A CN115097363 A CN 115097363A CN 202211037295 A CN202211037295 A CN 202211037295A CN 115097363 A CN115097363 A CN 115097363A
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iron boron
neodymium iron
electromagnet
detection
magnet
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CN202211037295.0A
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CN115097363B (en
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傅本伟
王庆
邱光怀
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Jiangsu Guoyuan Rare Earth New Material Co ltd
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Jiangsu Guoyuan Rare Earth New Material Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/12Measuring magnetic properties of articles or specimens of solids or fluids

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  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The invention relates to the field of magnet detection, in particular to a neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials, which comprises a tool table, wherein a fixing clamp, a lifting support, a magnetic force detection assembly and a support lifting mechanism are arranged on the tool table, the center of the tool table is provided with a detection port for detecting the magnetism of the neodymium iron boron magnet by the magnetic force detection assembly, the size of the detection port is smaller than that of the neodymium iron boron magnet, the magnetic force detection assembly comprises an electromagnet, a tension detection mechanism and a reset mechanism, the electromagnet is positioned right below the detection port, the reset mechanism is arranged on the lifting support, and the reset mechanism is matched and connected with the tension detection mechanism, the device adopts the way of mutual attraction between the electromagnet and the neodymium iron boron magnet, and through the cooperation between pulling force detection mechanism and the electro-magnet, realized the detection to the magnetic strength of neodymium iron boron magnetism body, improved the detection precision. The invention also relates to a neodymium iron boron magnet detection method for recycling neodymium iron boron waste materials.

Description

Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste
Technical Field
The invention relates to the field of magnet detection, in particular to a neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials, and further relates to a neodymium iron boron magnet detection method for recycling neodymium iron boron waste materials.
Background
In a factory using the neodymium iron boron magnet, the neodymium iron boron magnet is measured by using a handheld gaussmeter, and the measuring method comprises the following steps: the disadvantage of this measurement method is that the inspector holds the magnet in one hand and the gaussmeter probe in the other hand, then places the probe on the outer surface of the magnet while turning the magnet in the hand and recording the maximum of the NS poles: the great difference of data detected can appear with one person or different people, the improper contact of probe and magnet can lead to probe wearing and tearing to warp, the handheld probe of different people is different with the dynamics on magnet surface, also can produce the difference of data detected, neodymium iron boron magnetism body after the waste recovery is piled up at one, because it needs to spend a large amount of time to all detect, therefore, the mode through the sample carries out magnetic force detection to same batch neodymium iron boron magnetism body, judge the magnetic strength of whole neodymium iron boron magnetism body, and the mode of artifical manual detection, not only lead to data unstability, still because neodymium iron boron magnetism body is strong magnetism, magnetism is great, hurt operating personnel easily, it is dangerous to have.
The improved magnetizing neodymium iron boron magnetic ring meter magnetism detection tool comprises a machine body, wherein a rotating shaft is rotatably connected to the inner middle position of the machine body, a rotating disc is fixedly connected to the front side of the machine body in a penetrating mode, a bidirectional threaded rod is rotatably connected to the inner middle position of the rotating disc, an inner hexagonal bolt is fixedly connected to the upper end of the bidirectional threaded rod and rotatably connected with the side wall of the rotating disc, a second sliding block is in threaded connection with the upper end and the lower end of the bidirectional threaded rod in an up-and-down measuring mode, sliding grooves are formed in the upper end and the lower end of the front side of the rotating disc, the second sliding block is in sliding connection with the corresponding sliding grooves respectively, a limiting rod is fixedly connected to the front end of the second sliding block in a sliding mode, a first shell is fixedly connected to the left side of the front end of the machine body, a second shell is fixedly connected to the lower end of the machine body, and an operation panel is fixedly connected to the right side of the front end of the machine body, the lower extreme both sides of organism all fixedly connected with a plurality of support lower margins.
According to the above-mentioned patent, this patent is through adjusting the height of gauss meter probe, make it be close to the neodymium iron boron magnetism ring and survey it, detect NS two poles of the earth maximum value after, can drive the connecting plate through second servo motor and remove, thereby can drive the marker pen and mark the maximum point, however this mode is inaccurate to the detection of magnetic force, the mark of marker pen is using for having the deviation for a long time, and the test mode still surveys through the gauss meter probe, the marker pen only plays the marking action, it is too current to detect, therefore, need an automatic and accurate device that carries out magnetic detection to the neodymium iron boron magnet at present.
Disclosure of Invention
To the problem that prior art exists, provide a neodymium iron boron magnetism body detection device for neodymium iron boron waste recovery, this application is through the mode of inter attraction between electro-magnet and the neodymium iron boron magnetism body to and through the cooperation between pulling force detection mechanism and the electro-magnet, realized the detection to the magnetic strength of neodymium iron boron magnetism body, improved the detection precision.
In order to solve the problems of the prior art, the invention adopts the technical scheme that:
the invention provides a neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials, which comprises a tool table, wherein a fixed clamp, a lifting support, a magnetic force detection assembly and a support lifting mechanism are arranged on the tool table; a detection port for detecting the magnetism of the neodymium iron boron magnet by the magnetic detection assembly is formed in the center of the tool table, and the size of the detection port is smaller than that of the neodymium iron boron magnet; the magnetic force detection assembly is arranged on the lifting bracket; the magnetic force detection assembly comprises an electromagnet, a tension detection mechanism and a reset mechanism; the tension detection mechanism is arranged on the lifting support, the tension detection mechanism is positioned below the table board of the tool table, the electromagnet is arranged on the tension detection mechanism, and the electromagnet is positioned right below the detection port; the resetting mechanism is arranged on the lifting support and is connected with the tension detection mechanism in a matching way.
Preferably, the electromagnet is of a hollow annular structure, and the size of the electromagnet is smaller than that of the detection port.
Preferably, the tension detection mechanism comprises a steel wire rope, an unwinding roller, a first connecting piece, a slideway displacement sensor and a second connecting piece; the two steel wire ropes are symmetrically and horizontally arranged on two sides of the detection port, and are in a parallel state; the two pairs of unwinding rollers are arranged, each pair of unwinding rollers is arranged on the lifting bracket, and two ends of each steel wire rope are respectively wound on the corresponding unwinding roller; the first connecting piece is connected between the two steel wire ropes, and the electromagnet is arranged on the first connecting piece; the slideway displacement sensor is fixedly arranged at the bottom of the lifting bracket; the second connecting piece is connected between the two steel wire ropes and the slide displacement sensor.
Preferably, the first connecting piece is provided with a supporting plate, a sleeve and a column; the supporting plate is arranged between the two steel wire ropes and is positioned right below the detection port; the two sleeves are symmetrically arranged on two sides of the supporting plate, each sleeve is sleeved on a corresponding steel wire rope, and a soft cushion layer is attached to the inner wall of each sleeve; the stand is the fixed center that sets up in the backup pad of vertical state, and the electro-magnet cover is established on the stand, and the electro-magnet is through fixed connection between a locating pin and the stand, on the stand and on the electro-magnet all transversely link up in corresponding position department offer supply locating pin male pinhole.
Preferably, the second connecting piece is provided with a node, a connecting rope, a sliding sleeve, a first connecting rod, a second connecting rod and a pull rope; the nodes are provided with two pairs, each pair of nodes is fixedly connected to one steel wire rope respectively, and each pair of nodes is positioned at two ends of the corresponding sleeve respectively; the connecting ropes are provided with four connecting ropes, one ends of the four connecting ropes are connected together and extend towards the direction of the slideway displacement sensor, the other ends of the four connecting ropes extend towards the direction of a node respectively, the end part of each connecting rope extending towards the direction of the node is connected with a sleeve, each sleeve is sleeved on a corresponding steel wire rope, and each sleeve is positioned between a corresponding node and a corresponding sleeve; the sliding sleeve is fixedly arranged on the lifting bracket in a vertical state, and the sliding sleeve and the upright post share the same axis; one end of the first connecting rod is inserted in the sliding sleeve in a sliding manner, the other end of the first connecting rod extends upwards, and the end parts of the four connecting ropes which are connected together are fixedly connected with the upper end of the first connecting rod; one end of a second connecting rod is inserted into the sliding sleeve, the end part of the second connecting rod inserted into the sliding sleeve is fixedly connected with the first connecting rod, the other end of the second connecting rod extends downwards, and the lower end of the second connecting rod is also provided with a ball head with the diameter larger than that of the sliding sleeve; the two ends of the pull rope are respectively connected with the ball head and the induction end of the slideway displacement sensor.
Preferably, the reset mechanism comprises a reset torsion spring and a bracket; the number of the reset torsion springs is four, each unwinding roller can rotate on the lifting support, each unwinding roller is provided with a rotating shaft, the lifting support is provided with a shaft hole for the rotating shaft to rotate, the axis direction of each rotating shaft is perpendicular to the axis direction of the stand column, the four reset torsion springs are respectively sleeved on one rotating shaft, and two ends of each reset torsion spring are respectively fixedly connected with the rotating shaft and the lifting support; the bracket has two, and the bracket is flexible construction, and two brackets are all fixed on lifting support, and every bracket is located a telescopic below respectively to all be equipped with the confession on every bracket and correspond the portion of agreeing with that the sleeve supported, when two sleeves supported on the bracket that corresponds, two wire rope all kept the horizontality.
Preferably, every unreels and all is equipped with a guide roll between the sleeve that corresponds, and every guide roll all rotates the setting on lifting support, and every guide roll all is located wire rope's top and every wire rope's surface contradicts respectively on the surface that corresponds the guide roll.
Preferably, the tool table is fixedly provided with a rubber cushion block in the detection port, and the upper surface of the rubber cushion block is in a parallel and level state with the table surface of the tool table.
Preferably, a lifting slide block is all installed to four corners of lifting support, the equal vertical downwardly extending of the mesa bottom of frock platform towards every lifting slide block's direction has a guide post, every lifting slide block slides the cover respectively and establishes on the guide post that corresponds, the lower extreme of every guide post all is equipped with an anticreep nut, the last fixed lifter plate that is equipped with the mesa edge direction extension of orientation frock platform of being equipped with of lifting support, the transmission is connected between lifter plate and the support hoist mechanism, install the distance sensor that an output set up on the lifter plate, the mesa bottom of frock platform is equipped with an induction point that corresponds with distance sensor's output.
The invention also provides a neodymium iron boron magnet detection method for recycling neodymium iron boron waste materials, which comprises the following steps:
s1, sampling a large amount of neodymium iron boron magnets adsorbed together and recycled from the waste, and then placing the sampled neodymium iron boron magnets on a tool table in an alignment manner with the detection port;
s2, fixing the neodymium iron boron magnet through a fixing clamp;
s3, controlling the electromagnet to be electrified, enabling the electromagnet to be attracted by the neodymium iron boron magnet to approach the electromagnet, and enabling the steel wire rope to deform;
s4, sensing the tension value of the steel wire rope when the steel wire rope deforms through the slide displacement sensor, and detecting the magnetic strength of the neodymium iron boron magnet;
s5, under the condition that the electromagnet is not attracted, the lifting support is driven by the support lifting mechanism to drive the electromagnet to approach the neodymium iron boron magnet until the electromagnet can be attracted by the neodymium iron boron magnet, so that the magnetic strength of the electromagnet is measured;
s6, after the neodymium iron boron magnet is detected, the electromagnet is powered off, the neodymium iron boron magnet is taken out, the electromagnet is reset by the resetting mechanism, the steel wire rope returns to a normal horizontal state, and then the neodymium iron boron magnet is sampled for multiple times to carry out magnetic detection.
Compared with the prior art, the beneficial effect of this application is:
1. this application is through the mode of inter attraction between electro-magnet and the neodymium iron boron magnet, and through the cooperation between pulling force detection mechanism and the electro-magnet, along with the circular telegram of electro-magnet, the electro-magnet can attract the neodymium iron boron magnet, however because the neodymium iron boron magnet is fixed by mounting fixture, therefore, the electro-magnet can be close to towards the neodymium iron boron magnet, along with the electro-magnet is attracted towards the removal of neodymium iron boron magnet direction, thereby pulling force when pulling force detection mechanism detects out the electro-magnet and removes, combine the final magnetic strength who judges the neodymium iron boron magnet of pulling force, realized the detection to the magnetic strength of neodymium iron boron magnet, with current manual detection to the neodymium iron boron magnet through the manual work, avoided operating personnel to receive the injury, and improved and detected the precision.
2. This application corresponds through the position of electro-magnet and detection mouth, and the size of electro-magnet and the comparison of detection mouth, when the electro-magnet circular telegram, make the electro-magnet can be effectual attracted towards the neodymium iron boron magnet direction removal by fixed, if the position of electro-magnet does not correspond with the detection mouth, or the volume of electro-magnet is too big, lead to the electro-magnet easily can't be attracted by the neodymium iron boron magnet, the unable accurate detection of magnetic strength to the neodymium iron boron magnet, the effective attraction of neodymium iron boron magnet to the electro-magnet has been realized, guarantee that the electro-magnet can be normal through detecting the mouth and attracted towards the direction of neodymium iron boron magnet, the detection effect to the neodymium iron boron magnet has been improved.
3. This application is passed through slide displacement sensor to the detection of wire rope deformation degree, along with the electro-magnet circular telegram on the back by the attraction towards neodymium iron boron magnetism body direction, along with the removal of electro-magnet, wire rope is followed straight state by the electro-magnet pulling and becomes the bending state, is by tensile length through detecting wire rope, has realized attracting the detection of the magnetic strength of electro-magnet to neodymium iron boron magnetism body, has improved the detection precision.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a front view of the present application;
FIG. 3 is a top view of the present application;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;
FIG. 6 is a perspective view of the magnetic force detection assembly;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a cross-sectional view at C-C of FIG. 7;
FIG. 9 is an enlarged schematic view at D of FIG. 4;
FIG. 10 is a schematic perspective view of a portion of the tension detecting mechanism;
FIG. 11 is a flow chart of a method of the present application.
The reference numbers in the figures are:
1-a tooling table;
2-fixing the clamp;
3-lifting the support; 3 a-a lifting slide block; 3 b-a distance sensor; 3 c-sensing point;
4-a magnetic force detection assembly; 4 a-an electromagnet; 4 b-a tension detection mechanism; 4b 1-wire rope; 4b 2-unwind roll; 4b 21-guide rollers; 4b3 — first connector; 4b 31-support plate; 4b 32-sleeve; 4b 33-upright; 4b 34-cushion layer; 4b 35-locating pins; 4b 4-slideway displacement sensor; 4b5 — second connector; 4b51 — node; 4b 52-connecting rope; 4b53 — sliding sleeve; 4b54 — first connecting rod; 4b 55-second connecting bar; 4b 56-pull cord; 4b 57-cannula; 4b 58-bulb; 4 c-a reset mechanism; 4c 1-return torsion spring; 4c 2-bracket; 4c 3-axis of rotation;
5-a support lifting mechanism; 5 a-a guide post; 5 b-anti-drop nut; 5 c-a lifter plate;
6-rubber cushion block;
7-neodymium iron boron magnet.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1-11, a neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials comprises a tool table 1, wherein a fixed clamp 2, a lifting support 3, a magnetic force detection assembly 4 and a support lifting mechanism 5 are mounted on the tool table 1; a detection port for detecting the magnetism of the neodymium iron boron magnet 7 by the magnetic detection assembly 4 is formed in the center of the tool table 1, and the size of the detection port is smaller than that of the neodymium iron boron magnet 7; the magnetic force detection assembly 4 is arranged on the lifting bracket 3; the magnetic force detection assembly 4 comprises an electromagnet 4a, a tension detection mechanism 4b and a reset mechanism 4 c; the tension detection mechanism 4b is arranged on the lifting bracket 3, the tension detection mechanism 4b is positioned below the table top of the tool table 1, the electromagnet 4a is arranged on the tension detection mechanism 4b, and the electromagnet 4a is positioned right below the detection port; the resetting mechanism 4c is arranged on the lifting bracket 3, and the resetting mechanism 4c is matched and connected with the tension detection mechanism 4 b.
When detecting the neodymium iron boron magnet 7 after the waste recovery, a single neodymium iron boron magnet 7 is placed on the tool table 1 in a sampling mode, the neodymium iron boron magnet 7 is placed corresponding to the detection port, then the neodymium iron boron magnet 7 is fixed through the fixing clamp 2, after the preparation work is finished, the electromagnet 4a is controlled to be electrified, the detection distance exists between the electromagnet 4a and the neodymium iron boron magnet 7, because the neodymium iron boron magnet 7 is a strong magnet, the electromagnet 4a is attracted by the neodymium iron boron magnet 7 along with the electrification of the electromagnet 4a, so that the electromagnet is adsorbed on the neodymium iron boron magnet 7, if the electromagnet 4a is gradually close to the neodymium iron boron magnet 7 and is finally adsorbed on the neodymium iron boron magnet 7 under the condition that the specified distance between the electromagnet 4a and the magnet neodymium iron boron 7 is unchanged, the magnetic strength of the neodymium iron boron magnet 7 on the surface is high, and the tension detection mechanism 4b is connected with the electromagnet 4a, therefore, the tension detection mechanism 4b detects the accurate magnetic strength of the ndfeb magnet 7, when the electromagnet 4a is electrified, the electromagnet 4a is not attracted, the magnetic strength of the surface electromagnet 4a is not high, the lifting bracket 3 is driven to move upwards through the bracket lifting mechanism 5, the electromagnet 4a is driven to approach the ndfeb magnet 7 until the electromagnet 4a is attracted, the lifting bracket 3 stops moving, the tension detection mechanism 4b detects the accurate magnetic strength of the ndfeb magnet 7, when the magnetic strength of the ndfeb magnet 7 is detected, due to the detection mode of sampling, the magnetic strength of the same batch of ndfeb magnets 7 is judged, the electromagnet 4a is powered off, the ndfeb magnet 7 is taken out, the bracket lifting mechanism 5 drives the lifting bracket 3 to return to the designated position, and the electromagnet 4a returns to the original position under the action of the reset mechanism 4c, and then placing the neodymium iron boron magnet 7 for next sampling on the tool table 1, and repeating the steps for detection.
Referring to fig. 4 and 5, the electromagnet 4a is a hollow ring structure, and the size of the electromagnet 4a is smaller than that of the detection port.
When the electromagnet 4a is electrified, the ndfeb magnet 7 attracts the electromagnet 4a, and because the size of the electromagnet 4a is smaller than that of the detection port, and the size of the detection port is smaller than that of the ndfeb magnet 7, the electromagnet 4a can be effectively attracted by the ndfeb magnet 7.
Referring to fig. 6 and 7, the tension detecting mechanism 4b includes a wire rope 4b1, an unwinding roller 4b2, a first connecting member 4b3, a slideway displacement sensor 4b4 and a second connecting member 4b 5; the number of the steel wire ropes 4b1 is two, the two steel wire ropes 4b1 are symmetrically and horizontally arranged on two sides of the detection port, and the two steel wire ropes 4b1 are parallel; the unwinding rollers 4b2 are provided with two pairs, each pair of unwinding rollers 4b2 is arranged on the lifting bracket 3, and two ends of each steel wire rope 4b1 are respectively wound on the corresponding unwinding roller 4b 2; the first connecting piece 4b3 is connected between two steel wire ropes 4b1, and the electromagnet 4a is arranged on the first connecting piece 4b 3; the slideway displacement sensor 4b4 is fixedly arranged at the bottom of the lifting bracket 3; the second connector 4b5 is connected between two steel cables 4b1 and a slide displacement sensor 4b 4.
When the electromagnet 4a is attracted by the ndfeb magnet 7, under the action of the electromagnet 4a, the tension detection mechanism 4b is activated, because the electromagnet 4a is connected with the two steel wire ropes 4b1 through the first connecting piece 4b3, as the electromagnet 4a approaches to the ndfeb magnet 7, the two steel wire ropes 4b1 are deformed from the horizontal state, and because the slide way displacement sensor 4b4 is connected with the two steel wire ropes 4b1 through the second connecting piece 4b5, the degree of deformation of the two steel wire ropes 4b1 is detected by the slide way displacement sensor 4b4, the slide way displacement sensor 4b4 detects the degree of deformation of the steel wire rope 4b1, so as to detect the magnetic strength of the ndfeb magnet 7, and when the electromagnet 4a is attracted, the closer to the ndfeb magnet 7, the magnetic strength of the ndfeb magnet 7 is weaker.
Referring to fig. 5, the first connector 4b3 has a support plate 4b31, a sleeve 4b32 and a post 4b 33; the supporting plate 4b31 is arranged between the two wire ropes 4b1 and at a position right below the detection port; the number of the sleeves 4b32 is two, the two sleeves 4b32 are symmetrically arranged on two sides of the supporting plate 4b31, each sleeve 4b32 is sleeved on a corresponding steel wire rope 4b1, and a cushion layer 4b34 is attached to the inner wall of each sleeve 4b 32; the upright post 4b33 is vertically and fixedly arranged at the center of the support plate 4b31, the electromagnet 4a is sleeved on the upright post 4b33, the electromagnet 4a is fixedly connected with the upright post 4b33 through a positioning pin 4b35, and pin holes for inserting the positioning pin 4b35 are transversely formed in the upright post 4b33 and the electromagnet 4a at corresponding positions.
When the electromagnet 4a is attracted by the ndfeb magnet 7, because the electromagnet 4a is fixed on the upright post 4b33 by the positioning pin 4b35 and the support plate 4b31 is connected with the two steel cables 4b1 through the sleeve 4b32, when the electromagnet 4a approaches the ndfeb magnet 7, the two steel cables 4b1 are pulled upwards, the two steel cables 4b1 are deformed, and the pulling force of the two steel cables 4b1 is detected by the slide displacement sensor 4b4, so that the magnetic force of the ndfeb magnet 7 is detected.
Referring to fig. 8 to 10, the second link 4b5 has a node 4b51, a connecting rope 4b52, a sliding sleeve 4b53, a first connecting rod 4b54, a second connecting rod 4b55 and a pulling rope 4b 56; the nodes 4b51 have two pairs, each pair of nodes 4b51 is fixedly connected to a steel cable 4b1, and each pair of nodes 4b51 is positioned at two ends of a corresponding sleeve 4b 32; the number of the connecting ropes 4b52 is four, one end of each of the four connecting ropes 4b52 is connected together and extends towards the direction of the slide displacement sensor 4b4, the other end of each of the four connecting ropes 4b52 extends towards a node 4b51, the end of each of the connecting ropes 4b52 extending towards the node 4b51 is connected with a sleeve 4b57, each sleeve 4b57 is sleeved on a corresponding steel wire rope 4b1, and each sleeve 4b57 is located between a corresponding node 4b51 and a corresponding sleeve 4b 32; the sliding sleeve 4b53 is fixedly arranged on the lifting bracket 3 in a vertical state, and the sliding sleeve 4b53 and the upright post 4b33 are coaxial; one end of the first connecting rod 4b54 is slidably inserted into the sliding sleeve 4b53, the other end of the first connecting rod 4b54 extends upwards, and the ends of the four connecting ropes 4b52 which are connected together are fixedly connected with the upper end of the first connecting rod 4b 54; one end of the second connecting rod 4b55 is inserted into the sliding sleeve 4b53, the end of the second connecting rod 4b55 inserted into the sliding sleeve 4b53 is fixedly connected with the first connecting rod 4b54, the other end of the second connecting rod 4b55 extends downwards, and the lower end of the second connecting rod 4b55 is also provided with a ball 4b58 with the diameter larger than that of the sliding sleeve 4b 53; two ends of the pull rope 4b56 are respectively connected with the ball head 4b58 and the sensing end of the slide way displacement sensor 4b 4.
When the two steel wire ropes 4b1 deform, the two steel wire ropes 4b1 pull the connecting rope 4b52 upwards, since the bushings 4b57 of the connecting ropes 4b52 connected with the steel wire ropes 4b1 are between the corresponding nodes 4b51 and the corresponding sleeves 4b32, therefore, the connecting rope 4b52 can be pulled upwards along with the steel wire rope 4b1, the phenomenon of slipping can not occur, after the steel wire rope 4b1 pulls the connecting rope 4b52 upwards, the first connecting rod 4b54 slides upwards in the sliding sleeve 4b53, the upward slide of the first connecting rod 4b54 drives the second connecting rod 4b55 to slide upwards, and in the process of the upward slide of the second connecting rod 4b55, due to the blocking of the ball 4b58, the second connecting rod 4b55 cannot be separated from the sliding sleeve 4b53, the second connecting rod 4b55 subsequently pulls the pull rope 4b56, the pull rope 4b56 triggers the slide displacement sensor 4b4, and the slide displacement sensor 4b4 senses the pulling force of the pull rope 4b56 to judge the magnetic force of the ndfeb magnet 7.
Referring to FIG. 6, the return mechanism 4c includes a return torsion spring 4c1 and a bracket 4c 2; the number of the reset torsion springs 4c1 is four, each unwinding roller 4b2 can rotate on the lifting support 3, each unwinding roller 4b2 is provided with a rotating shaft 4c3, the lifting support 3 is provided with a shaft hole for the rotating shaft 4c3 to rotate, the axis direction of each rotating shaft 4c3 is perpendicular to the axis direction of the upright post 4b33, the four reset torsion springs 4c1 are respectively sleeved on one rotating shaft 4c3, and two ends of each reset torsion spring 4c1 are respectively fixedly connected with the rotating shaft 4c3 and the lifting support 3; the number of the brackets 4c2 is two, the bracket 4c2 is a flexible structure, the two brackets 4c2 are fixed on the lifting support 3, each bracket 4c2 is located below one sleeve 4b32, an engagement part for supporting the corresponding sleeve 4b32 is arranged on each bracket 4c2, and when the two sleeves 4b32 are supported on the corresponding brackets 4c2, the two steel wire ropes 4b1 are kept in a horizontal state.
After the electromagnet 4a is powered off, because the steel wire rope 4b1 is pulled to deform, under the action of the reset torsion spring 4c1, the rotating shaft 4c3 drives the unwinding roller 4b2 to rotate, the unwinding roller 4b2 pulls the steel wire rope 4b1 back to be in a horizontal state, the sleeve 4b32 on the supporting plate 4b31 is supported on the bracket 4c2 and then stops, and the steel wire rope 4b1 is prevented from shaking.
Referring to fig. 6, a guide roller 4b21 is disposed between each unwinding roller 4b2 and the corresponding sleeve 4b32, each guide roller 4b21 is rotatably disposed on the lifting bracket 3, each guide roller 4b21 is located above the steel wire rope 4b1, and the surface of each steel wire rope 4b1 abuts against the surface of the corresponding guide roller 4b 21.
When the wire rope 4b1 is deformed, in order to avoid the wire rope 4b1 from coming off the unwinding roller 4b2, the deformation of the wire rope 4b1 is urged to be changed only in the up and down directions by the restriction of the guide roller 4b 21.
Referring to fig. 4 and 5, a rubber cushion block 6 is fixedly arranged on the tooling table 1 and in the detection port, and the upper surface of the rubber cushion block 6 is flush with the table top of the tooling table 1.
When electro-magnet 4a is attracted towards it by neodymium iron boron magnetism body 7 and is close to, because neodymium iron boron magnetism body 7 is strong magnetism, itself suction is too strong, avoids electro-magnet 4a direct striking to take place the condition of damaging on neodymium iron boron magnetism body 7, through the interval setting of rubber cushion 6, impels electro-magnet 4a to strike and obtains the buffering on rubber cushion 6, and rubber cushion 6's setting does not influence neodymium iron boron magnetism body 7's magnetic force.
Referring to fig. 4 and 6, a lifting slider 3a is installed at four corners of the lifting support 3, a guide post 5a is vertically extended downwards towards the direction of each lifting slider 3a at the bottom of the table board of the tool table 1, each lifting slider 3a is respectively sleeved on the corresponding guide post 5a in a sliding manner, an anti-dropping nut 5b is arranged at the lower end of each guide post 5a, a lifting plate 5c extending towards the edge direction of the table board of the tool table 1 is fixedly arranged on the lifting support 3, the lifting plate 5c is in transmission connection with the support lifting mechanism 5, a distance sensor 3b with an upward output end is installed on the lifting plate 5c, and an induction point 3c corresponding to the output end of the distance sensor 3b is arranged at the bottom of the table board of the tool table 1.
When support hoist mechanism 5 ordered about lifting support 3 and removed, thereby support hoist mechanism 5 drive lifter plate 5c reciprocated and drive lifting support 3 and remove on four guide posts 5a, when lifter plate 5c adjusting position, distance sensor 3b corresponds the change of response point 3c response interval, according to the data of interval adjustment and the data of slide displacement sensor 4b4, combines the complete magnetic strength who detects out neodymium iron boron magnetism body 7 together.
Referring to fig. 11, a method for detecting an ndfeb magnet used for recycling ndfeb waste includes the following steps:
s1, sampling a large amount of neodymium iron boron magnets 7 which are absorbed together and recycled by the waste, and then placing the sampled neodymium iron boron magnets 7 on the tool table 1 in an alignment manner with the detection port;
s2, fixing the NdFeB magnet 7 through the fixing clamp 2;
s3, controlling the electromagnet 4a to be electrified, enabling the electromagnet 4a to be attracted by the neodymium iron boron magnet 7 to approach the electromagnet, and enabling the steel wire rope 4b1 to deform;
s4, sensing the tension value of the steel wire rope 4b1 when the steel wire rope is deformed by the slide way displacement sensor 4b4, and detecting the magnetic strength of the neodymium iron boron magnet 7;
s5, under the condition that the electromagnet 4a is not attracted, the lifting support 3 is driven by the support lifting mechanism 5 to drive the electromagnet 4a to approach the NdFeB magnet 7 until the electromagnet 4a can be attracted by the NdFeB magnet 7, and therefore the magnetic strength of the electromagnet is measured;
s6, after the NdFeB magnet 7 is detected, the electromagnet 4a is powered off, the NdFeB magnet 7 is taken out, the electromagnet 4a is reset by the resetting mechanism 4c, the steel wire rope 4b1 returns to the normal horizontal state, and then the NdFeB magnet 7 is sampled for multiple times to carry out magnetic detection.
This application is through the mode of inter attraction between electro-magnet 4a and the neodymium iron boron magnetism body 7 to and through the cooperation between pulling force detection mechanism 4b and the electro-magnet 4a, realized the detection to the magnetic strength of neodymium iron boron magnetism body 7, improved the detection precision.
The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials comprises a tool table (1), wherein a fixed clamp (2), a lifting support (3), a magnetic force detection assembly (4) and a support lifting mechanism (5) are mounted on the tool table (1);
a detection port for detecting the magnetism of the neodymium iron boron magnet (7) by the magnetic detection assembly (4) is formed in the center of the tool table (1), and the size of the detection port is smaller than that of the neodymium iron boron magnet (7);
the magnetic force detection assembly (4) is arranged on the lifting bracket (3);
the device is characterized in that the magnetic force detection assembly (4) comprises an electromagnet (4 a), a tension detection mechanism (4 b) and a reset mechanism (4 c);
the tension detection mechanism (4 b) is arranged on the lifting support (3), the tension detection mechanism (4 b) is positioned below the table top of the tool table (1), the electromagnet (4 a) is arranged on the tension detection mechanism (4 b), and the electromagnet (4 a) is positioned right below the detection port;
the resetting mechanism (4 c) is arranged on the lifting support (3), and the resetting mechanism (4 c) is connected with the tension detection mechanism (4 b) in a matching manner.
2. The NdFeB magnet detection device for NdFeB scrap recycling according to claim 1, wherein the electromagnet (4 a) is of a hollow ring structure, and the size of the electromagnet (4 a) is smaller than that of the detection port.
3. The neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials according to claim 2, characterized in that the tension detection mechanism (4 b) comprises a steel wire rope (4 b 1), a unreeling roller (4 b 2), a first connecting piece (4 b 3), a slideway displacement sensor (4 b 4) and a second connecting piece (4 b 5);
the number of the steel wire ropes (4 b 1) is two, the two steel wire ropes (4 b 1) are symmetrically and horizontally arranged on two sides of the detection port, and the two steel wire ropes (4 b 1) are in a parallel state;
the unwinding rollers (4 b 2) are provided with two pairs, each pair of unwinding rollers (4 b 2) is installed on the lifting bracket (3), and two ends of each steel wire rope (4 b 1) are respectively wound on the corresponding unwinding roller (4 b 2);
the first connecting piece (4 b 3) is connected between the two steel wire ropes (4 b 1), and the electromagnet (4 a) is installed on the first connecting piece (4 b 3);
the slide way displacement sensor (4 b 4) is fixedly arranged at the bottom of the lifting bracket (3);
the second connector (4 b 5) is connected between two steel cables (4 b 1) and a slideway displacement sensor (4 b 4).
4. A ndfeb magnet tester as claimed in claim 3 where the first connector (4 b 3) has a support plate (4 b 31), a sleeve (4 b 32) and a post (4 b 33);
the supporting plate (4 b 31) is arranged between the two steel wire ropes (4 b 1) and is positioned right below the detection port;
the number of the sleeves (4 b 32) is two, the two sleeves (4 b 32) are symmetrically arranged on two sides of the supporting plate (4 b 31), each sleeve (4 b 32) is sleeved on a corresponding steel wire rope (4 b 1), and a cushion layer (4 b 34) is attached to the inner wall of each sleeve (4 b 32);
the upright post (4 b 33) is vertically and fixedly arranged at the center of the support plate (4 b 31), the electromagnet (4 a) is sleeved on the upright post (4 b 33), the electromagnet (4 a) is fixedly connected with the upright post (4 b 33) through a positioning pin (4 b 35), and pin holes for inserting the positioning pin (4 b 35) are transversely formed in the upright post (4 b 33) and the electromagnet (4 a) in a through mode at corresponding positions.
5. The NdFeB magnet detecting device for NdFeB scrap recycling according to claim 3, characterized in that the second connecting piece (4 b 5) has a node (4 b 51), a connecting rope (4 b 52), a sliding sleeve (4 b 53), a first connecting rod (4 b 54), a second connecting rod (4 b 55) and a pulling rope (4 b 56);
the nodes (4 b 51) are provided with two pairs, each pair of nodes (4 b 51) is fixedly connected to a steel wire rope (4 b 1), and each pair of nodes (4 b 51) is positioned at two ends of the corresponding sleeve (4 b 32);
the number of the connecting ropes (4 b 52) is four, one ends of the four connecting ropes (4 b 52) are connected together and extend towards the direction of the slideway displacement sensor (4 b 4), the other ends of the four connecting ropes (4 b 52) respectively extend towards the direction of one node (4 b 51), the end part of each connecting rope (4 b 52) extending towards the direction of the node (4 b 51) is connected with a sleeve (4 b 57), each sleeve (4 b 57) is sleeved on the corresponding steel wire rope (4 b 1), and each sleeve (4 b 57) is respectively located between the corresponding node (4 b 51) and the corresponding sleeve (4 b 32);
the sliding sleeve (4 b 53) is fixedly arranged on the lifting bracket (3) in a vertical state, and the sliding sleeve (4 b 53) and the upright post (4 b 33) share the same axis;
one end of a first connecting rod (4 b 54) is inserted in the sliding sleeve (4 b 53) in a sliding manner, the other end of the first connecting rod (4 b 54) extends upwards, and the ends of the four connecting ropes (4 b 52) which are connected together are fixedly connected with the upper end of the first connecting rod (4 b 54);
one end of the second connecting rod (4 b 55) is inserted in the sliding sleeve (4 b 53), the end of the second connecting rod (4 b 55) inserted in the sliding sleeve (4 b 53) is fixedly connected with the first connecting rod (4 b 54), the other end of the second connecting rod (4 b 55) extends downwards, and the lower end of the second connecting rod (4 b 55) is also provided with a ball head (4 b 58) with the diameter larger than that of the sliding sleeve (4 b 53);
two ends of the pull rope (4 b 56) are respectively connected with the bulb (4 b 58) and the sensing end of the slide displacement sensor (4 b 4).
6. The ndfeb magnet detection apparatus for ndfeb scrap recycling according to claim 3, wherein the reset mechanism (4 c) comprises a reset torsion spring (4 c 1) and a bracket (4 c 2);
the four reset torsion springs (4 c 1) are provided, each unwinding roller (4 b 2) can rotate on the lifting support (3), each unwinding roller (4 b 2) is provided with a rotating shaft (4 c 3), each lifting support (3) is provided with a shaft hole for the rotation of the rotating shaft (4 c 3), the axial direction of each rotating shaft (4 c 3) is perpendicular to the axial direction of the upright post (4 b 33), the four reset torsion springs (4 c 1) are respectively sleeved on one rotating shaft (4 c 3), and two ends of each reset torsion spring (4 c 1) are respectively fixedly connected with the rotating shaft (4 c 3) and the lifting support (3);
the two brackets (4 c 2), the bracket (4 c 2) is of a flexible structure, the two brackets (4 c 2) are fixed on the lifting support (3), each bracket (4 c 2) is located below one sleeve (4 b 32), each bracket (4 c 2) is provided with a matching portion for supporting the corresponding sleeve (4 b 32), and when the two sleeves (4 b 32) are supported on the corresponding brackets (4 c 2), the two steel wire ropes (4 b 1) are kept in a horizontal state.
7. The NdFeB magnet detection device for NdFeB scrap recycling according to claim 6, wherein a guide roller (4 b 21) is arranged between each unreeling roller (4 b 2) and the corresponding sleeve (4 b 32), each guide roller (4 b 21) is rotatably arranged on the lifting bracket (3), each guide roller (4 b 21) is positioned above the steel wire rope (4 b 1), and the surface of each steel wire rope (4 b 1) is respectively abutted against the surface of the corresponding guide roller (4 b 21).
8. The neodymium iron boron magnet detection device for recycling neodymium iron boron waste materials according to claim 1, characterized in that a rubber cushion block (6) is fixedly arranged on the tool table (1) and in the detection port, and the upper surface of the rubber cushion block (6) is in a flush state with the table top of the tool table (1).
9. The NdFeB magnet detection device for NdFeB waste recycling according to claim 7, wherein four corners of the lifting support (3) are respectively provided with a lifting slider (3 a), the bottom of the table top of the tooling table (1) is vertically extended downwards in the direction of each lifting slider (3 a) to form a guide post (5 a), each lifting slider (3 a) is respectively sleeved on the corresponding guide post (5 a) in a sliding manner, the lower end of each guide post (5 a) is provided with an anti-drop nut (5 b), the lifting support (3) is fixedly provided with a lifting plate (5 c) extended towards the edge of the table top of the tooling table (1), the lifting plate (5 c) is in transmission connection with the support lifting mechanism (5), the lifting plate (5 c) is provided with a distance sensor (3 b) with an output end facing upwards, the bottom of the table top of the tool table (1) is provided with an induction point (3 c) corresponding to the output end of the distance sensor (3 b).
10. A neodymium iron boron magnet detection method for neodymium iron boron waste recovery is applied to the neodymium iron boron magnet detection device for neodymium iron boron waste recovery in any one of claims 1 to 9, and is characterized by comprising the following steps:
s1, sampling a large amount of neodymium iron boron magnets (7) which are adsorbed together and recycled by the waste, and then aligning the sampled neodymium iron boron magnets (7) with the detection port and placing the neodymium iron boron magnets on the tool table (1);
s2, fixing the neodymium iron boron magnet (7) through the fixing clamp (2);
s3, controlling the electromagnet (4 a) to be electrified, enabling the electromagnet (4 a) to be attracted by the neodymium iron boron magnet (7) to approach the electromagnet, and enabling the steel wire rope (4 b 1) to deform;
s4, sensing a tension value of the steel wire rope (4 b 1) during deformation through the slideway displacement sensor (4 b 4), and detecting the magnetic strength of the neodymium iron boron magnet (7);
s5, under the condition that the electromagnet (4 a) is not attracted, the lifting support (3) is driven by the support lifting mechanism (5) to drive the electromagnet (4 a) to approach towards the neodymium iron boron magnet (7) until the electromagnet (4 a) can be attracted by the neodymium iron boron magnet (7), and therefore the magnetic strength of the electromagnet is measured;
s6, after the neodymium iron boron magnet (7) is detected, the electromagnet (4 a) is powered off, the neodymium iron boron magnet (7) is taken out, the electromagnet (4 a) is reset by the resetting mechanism (4 c), the steel wire rope (4 b 1) returns to a normal horizontal state, and then the neodymium iron boron magnet (7) is sampled for multiple times to carry out magnetic detection.
CN202211037295.0A 2022-08-29 2022-08-29 Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste Active CN115097363B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116973379A (en) * 2023-09-25 2023-10-31 常州市武进红东电子有限公司 Neodymium iron boron magnetism steel is with turn-over detection production line

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010002208A (en) * 2008-06-18 2010-01-07 Seihoo:Kk Magnetic attractive force measuring device and method
US20180202971A1 (en) * 2015-07-13 2018-07-19 Basell Polyolefine Gmbh Methods for testing non- or weakly ferromagnetic test objects
CN208795831U (en) * 2018-07-20 2019-04-26 天津邦特磁性材料有限公司 A kind of neodymium-iron-boron force checking device easy to use
CN208894660U (en) * 2018-07-23 2019-05-24 天津邦特磁性材料有限公司 A kind of magnetic force detection device suitable for neodymium iron boron
CN111812564A (en) * 2020-07-01 2020-10-23 四川大学 Magnetic force testing device and system of magnetic pressure maintaining controller by using tension detection
CN215833591U (en) * 2021-09-18 2022-02-15 深圳市东方熊磁电制品有限公司 Neodymium iron boron magnetism nature detection device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010002208A (en) * 2008-06-18 2010-01-07 Seihoo:Kk Magnetic attractive force measuring device and method
US20180202971A1 (en) * 2015-07-13 2018-07-19 Basell Polyolefine Gmbh Methods for testing non- or weakly ferromagnetic test objects
CN208795831U (en) * 2018-07-20 2019-04-26 天津邦特磁性材料有限公司 A kind of neodymium-iron-boron force checking device easy to use
CN208894660U (en) * 2018-07-23 2019-05-24 天津邦特磁性材料有限公司 A kind of magnetic force detection device suitable for neodymium iron boron
CN111812564A (en) * 2020-07-01 2020-10-23 四川大学 Magnetic force testing device and system of magnetic pressure maintaining controller by using tension detection
CN215833591U (en) * 2021-09-18 2022-02-15 深圳市东方熊磁电制品有限公司 Neodymium iron boron magnetism nature detection device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
中华人民共和国国家质量监督检验检疫总局 等: "《中华人民共和国国家标准GB/T31967.1-2015》", 11 September 2015 *
吕庆荣 等: "手动自动相结合测量永磁材料磁性能的实验教学探索", 《大学物理实验》 *
许建锋 等: "新能源汽车永磁同步电机中钕铁硼磁体的回收", 《中国稀土学报》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116973379A (en) * 2023-09-25 2023-10-31 常州市武进红东电子有限公司 Neodymium iron boron magnetism steel is with turn-over detection production line
CN116973379B (en) * 2023-09-25 2023-12-01 常州市武进红东电子有限公司 Neodymium iron boron magnetism steel is with turn-over detection production line

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