A magnetizing detection device and a magnetizing detection method

Abstract

The application relates to the technical field of magnetizing detection, in particular to a magnetizing detection device and a magnetizing detection method, which comprise a primary magnetizing main body, a groove is formed in the left side of the primary magnetizing main body, and a motor is fixedly arranged at the rear side of the primary magnetizing main body. The magnetizing detection device and the magnetizing detection method clamp and fix the material subjected to magnetizing by the discharging gripper, at the moment, the motor drives the rotating disc and the limiting block to rotate, the limiting block rotates in the long groove, drives the C-shaped swing strip to swing left and right, the C-shaped swing strip drives the L-shaped moving rod and the discharging gripper to move left and right through the limiting of the C-shaped block, the magnetized material is moved to the feeding plate, when the L-shaped moving rod moves, the L-shaped moving rod contacts the hinged strip, the hinged strip moves left and drives the magnetic pole detection sensor to move left, the magnetized material is detected, the production speed of the magnetized material is increased, and the possibility of delayed delivery of orders and bottleneck of production capacity is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetizing detection, in particular to a magnetizing detection device and a magnetizing detection method. BACKGROUND

[0002] In industrial production and permanent magnet material application, non-magnetic permanent magnets such as neodymium iron boron, samarium cobalt and other sintered materials do not have magnetism in the initial state and must go through a professional magnetizing process to exert their functional characteristics. The magnetizing process needs to generate a strong magnetic field through a special magnetizing device to directionally adjust the internal structure of the material. This key process directly affects the final magnetic performance index. After magnetizing is completed, professional measuring instruments are used to detect the magnetic performance to ensure that the magnetic field strength meets the design requirements. In precision application scenarios such as sensors, the magnetic characteristic parameters of the material need to be further detected to verify the performance stability. The entire process needs to be completed in a constant temperature environment and the material quality is evaluated through professional analysis methods to finally form a complete quality detection report as the basis for shipment.

[0003] In modern industrial production, the magnetizing process of neodymium iron boron magnets and other permanent magnet materials usually adopts the traditional manual operation mode. The operator needs to manually complete multiple key steps: first, the polarity of the raw material needs to be tested to determine the magnetizing direction, then the material is precisely placed in the magnetizing station by hand, then the magnetizing device is started for magnetization treatment, and finally the material is manually taken out and stored. This manual operation mode not only has high labor intensity and low efficiency, but also easily leads to poor product consistency due to human factors. With the rapid increase in demand for high-performance neodymium iron boron materials in new energy vehicle, intelligent home appliance and other industries, especially the rapid rise in demand for high-end products that require secondary saturation magnetization, the traditional manual production method has obviously lagged behind. Its production efficiency cannot match the growth rate of market demand, and thus problems such as order delivery delay and production capacity bottleneck are easily encountered.

[0004] In view of this, we propose a magnetizing detection device and a magnetizing detection method. SUMMARY

[0005] The purpose of the present application is to provide a magnetizing detection device and a magnetizing detection method to solve the above background art that the operator needs to manually complete multiple key steps: first, the polarity of the raw material needs to be tested to determine the magnetizing direction, then the material is placed accurately in the magnetizing station manually, then the magnetizing device is started for magnetization treatment, and finally the material is taken out manually and stored in categories. This manual operation mode not only has high labor intensity and low efficiency, but also easily leads to poor product consistency due to human factors. With the rapid increase in demand for high-performance neodymium iron boron materials in the new energy vehicle and smart home appliance industries, especially the rapid increase in demand for high-end products that require secondary saturation magnetization, the traditional manual production method has obviously lagged behind, and its production efficiency cannot match the growth rate of market demand, which may lead to order delivery delays and production capacity bottlenecks. To achieve the above purpose, the present application provides the following technical solution: a magnetizing detection device, comprising a primary magnetizing main body, a groove is formed on the left side of the primary magnetizing main body, a motor is fixedly arranged on the rear side of the primary magnetizing main body, the front end of the rotating shaft of the motor extends into the interior of the primary magnetizing main body and is fixedly connected with a moving mechanism for displacing a neodymium iron boron magnet, the moving mechanism comprises a rotating disc, the rotating disc is fixedly arranged at the front end of the rotating shaft of the motor, a limiting block is fixedly arranged on the front side of the rotating disc, a C-shaped swing bar is arranged in the interior of the groove, the lower side transverse bar of the C-shaped swing bar is rotatably arranged in the interior of the groove, a long groove is formed on the front side of the vertical bar of the C-shaped swing bar and matched with the limiting block, the length of the long groove is equal to the diameter of the rotating disc, the limiting block is eccentrically arranged on the front side of the rotating disc, two C-shaped blocks are fixedly arranged on the upper side of the inner wall of the groove, an L-shaped moving rod is slidably arranged in the interior of the two C-shaped blocks, a concave block is fixedly arranged at the bottom of the horizontal bar of the L-shaped moving rod, the interior of the concave block is slidably matched with the side surface of the upper transverse bar of the C-shaped swing bar, a discharging gripper is fixedly arranged on the side surface of the vertical bar of the L-shaped moving rod, a primary magnetizing discharging bin is arranged on the left side of the primary magnetizing main body, a feeding mechanism is fixedly arranged on the top of the primary magnetizing discharging bin, a secondary saturation magnetizing main body is arranged on the left side of the primary magnetizing main body, a connecting frame is fixedly arranged on the left side of the primary magnetizing main body, an L-shaped bar is slidably arranged in the interior of the connecting frame, the inner wall of the connecting frame is in the shape of an L-shaped bar, a magnetic pole detection sensor is fixedly arranged on the front side of the left side of the L-shaped bar, a hinged bar is fixedly arranged on the top of the L-shaped bar, and a torsional spring is fixedly arranged on the middle part of the side surface of the hinged bar.

[0006] Preferably, the front and rear sides of the primary magnetizing discharge bin are fixedly provided with transmission shafts, the sides of the two transmission shafts are sleeved with a transmission belt, the side of the transmission belt is fixedly provided with a plurality of partitions, the transmission belt is drivingly connected through the two transmission shafts, the top of the primary magnetizing discharge bin is fixedly provided with a touch sensor, the rear side of the top of the primary magnetizing discharge bin is fixedly provided with a second air cylinder, and the front side of the telescopic rod of the second air cylinder is fixedly provided with a push plate.

[0007] Preferably, the feeding mechanism comprises a first air cylinder, the end of the telescopic rod of the first air cylinder is fixedly provided with a feeding plate, the feeding plate is slidingly arranged on the upper side of the transmission belt, the right end of the feeding plate abuts against the side of the touch sensor, the front and rear sides of the feeding plate are fixedly provided with L-shaped inserts, the front side of the horizontal block of the L-shaped insert located at the front side is fixedly provided with an L-shaped plate, and the top of the L-shaped plate is fixedly provided with a first rack.

[0008] Preferably, the inside of the secondary saturation magnetizing main body is provided with an L-shaped groove, the L-shaped groove is slidingly matched with the side of the L-shaped plate, the top of the secondary saturation magnetizing main body is fixedly provided with a connecting shaft, the side of the connecting shaft is fixedly sleeved with a gear, the top of the secondary saturation magnetizing main body is movably inserted with a second rack, the second rack and the first rack are respectively engaged with the gear, the inside of the secondary saturation magnetizing main body is provided with two rectangular grooves, the inside of the two rectangular grooves is slidingly provided with a compression plate, the top of the compression plate is fixedly provided with two tension springs, the top end of the tension spring is fixedly matched with the upper side of the inner wall of the rectangular groove, and the inside of the secondary saturation magnetizing main body is provided with two insertion grooves matched with the L-shaped inserts.

[0009] A magnetizing detection method of a magnetizing detection device, comprising the following steps:

[0010] S1, first, when the material to be magnetized passes through the inside of the primary magnetizing main body for magnetization, the magnetized material is clamped and fixed by the discharge gripper, then the rotating disc and the limiting block on the front side thereof are driven to rotate by the rotating shaft of the motor, the C-shaped swing bar is swung left and right by the rotation of the limiting block in the long groove, the L-shaped moving rod and the concave block are limited by the C-shaped block, so that the C-shaped swing bar swings to drive the L-shaped moving rod and the discharge gripper at the bottom thereof to move left and right, the magnetized material is moved to the upper side of the feeding plate, and when the L-shaped moving rod moves to the left, the hinged strip is contacted and moved to the left, and the magnetic pole detection sensor is moved to the left, so that the magnetized material is detected;

[0011] S2, the magnetized material completes a magnetization detection, when the magnetized material is in an abnormal state, the whole machine stops moving, when the magnetized material is in a normal state, the first air cylinder drives the feeding plate to move left, the feeding plate drives the magnetized material on the top to move to the inside of the secondary saturation magnetization main body, and the L-shaped plate and the first rack are driven to move left by the feeding plate, and the gear rotates, the second rack is driven by the gear to drive the pressing plate to move down, and the magnetized material is subjected to secondary magnetization when the feeding plate moves to the position;

[0012] S3, when the magnetized material completes secondary magnetization, the first air cylinder drives the feeding plate and the magnetized material to move right, and the pressing plate is reset upward, when the feeding plate moves to the right, the feeding plate contacts the touch sensor twice, and the push plate is driven by the second air cylinder to push the magnetized material to the upper side of the transmission belt.

[0013] Compared with the prior art, the beneficial effects of the present application are:

[0014] In the application, the magnetized material is clamped and fixed by the discharging gripper, at this time, the motor drives the rotating disc and its limiting block to rotate, and the limiting block rotates in the long groove, drives the C-shaped swing strip to swing left and right, and the C-shaped block limits the C-shaped swing strip to drive the L-shaped moving rod and the discharging gripper to move left and right, moves the magnetized material to the feeding plate, and when the L-shaped moving rod moves, it contacts the hinged strip, moves the hinged strip to the left and drives the magnetic pole detection sensor to move left, detects the magnetized material, and further increases the production speed of the magnetized material, reduces the possibility of delayed delivery of orders and bottleneck of production capacity.

[0015] In the application, after the magnetized material completes a magnetization detection, when the material is in an abnormal state, the machine stops moving, when the magnetized material is in a normal state, the first air cylinder drives the feeding plate to move left, the feeding plate drives the magnetized material to move to the inside of the secondary saturation magnetization main body, and the L-shaped plate and the first rack are driven to move left by the feeding plate, and the gear rotates, the second rack is driven by the gear to drive the pressing plate to move down, and the magnetized material is subjected to secondary magnetization when the feeding plate moves to the position, and further can quickly magnetize the material twice, and increases the speed of secondary magnetization of the material.

[0016] In the application, after the material completes secondary magnetization, the first air cylinder drives the feeding plate and the magnetized material to move right, and the pressing plate is reset upward, when the feeding plate moves to the right, the feeding plate contacts the touch sensor twice, and the push plate is driven by the second air cylinder to push the magnetized material to the upper side of the transmission belt, and further can quickly move the magnetized material after secondary magnetization, and further reduces the labor cost required by enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 isometric view of the primary magnetizing main body of the present application;

[0018] Figure 2 isometric view of the primary magnetizing main body of the present application;

[0019] Figure 3 isometric view of the primary magnetizing main body of the present application;

[0020] Figure 4 isometric view of the primary magnetizing main body of the present application;

[0021] Figure 5 isometric view of the primary magnetizing main body of the present application;

[0022] Figure 6 isometric view of the primary magnetizing main body of the present application;

[0023] Figure 7 isometric view of the primary magnetizing main body of the present application;

[0024] Figure 8 isometric view of the primary magnetizing main body of the present application;

[0025] Figure 9 isometric view of the primary magnetizing main body of the present application; Figure 1

[0026] Figure 10 isometric view of the primary magnetizing main body of the present application; Figure 2

[0027] isometric view of the primary magnetizing main body of the present application; DETAILED DESCRIPTION

[0028] ​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0029] Please refer to Figures 1 to 10 The present application provides a technical solution: a magnetizing detection device, comprising a primary magnetizing main body 1, a groove 2 is formed on the left side of the primary magnetizing main body 1, a motor 3 is fixedly arranged on the rear side of the primary magnetizing main body 1, the front end of the rotating shaft of the motor 3 extends into the interior of the primary magnetizing main body 1 and is fixedly connected with a moving mechanism 4 for displacing a neodymium iron boron magnet, a primary magnetizing discharge bin 5 is arranged on the left side of the primary magnetizing main body 1, a feeding mechanism 6 is fixedly arranged on the top of the primary magnetizing discharge bin 5, and a secondary saturation magnetizing main body 7 is arranged on the left side of the primary magnetizing discharge bin 5.

[0030] Embodiment 1:

[0031] Please refer to Figures 1 to 7 The present embodiment provides a technical solution:

[0032] The moving mechanism 4 comprises a rotating disc 401 fixedly arranged on the front end of the rotating shaft of the motor 3, a limiting block 402 fixedly arranged on the front side of the rotating disc 401, a C-shaped swing bar 403 arranged in the interior of the groove 2, the lower side horizontal bar of the C-shaped swing bar 403 being rotatably arranged in the interior of the groove 2, a long groove 404 with the same length as the diameter of the rotating disc 401 being formed on the front side of the vertical bar of the C-shaped swing bar 403, and the limiting block 402 being eccentrically arranged on the front side of the rotating disc 401;

[0033] Two C-shaped blocks 405 are fixedly arranged on the upper side of the inner wall of the groove 2, an L-shaped moving rod 406 is slidably arranged in the interior of the two C-shaped blocks 405, a concave block 407 is fixedly arranged on the bottom of the horizontal bar of the L-shaped moving rod 406, the interior of the concave block 407 and the side surface of the upper horizontal bar of the C-shaped swing bar 403 are in sliding cooperation, and a discharge gripper 408 is fixedly arranged on the side surface of the vertical bar of the L-shaped moving rod 406;

[0034] A connecting frame 101 is fixedly arranged on the left side of the primary magnetizing main body 1, an N-shaped bar 102 is slidably arranged in the interior of the connecting frame 101, the inner wall of the connecting frame 101 is in the shape of N, a magnetic pole detection sensor 103 is fixedly arranged on the front side of the left side of the N-shaped bar 102, a hinged bar 104 is fixedly arranged on the top of the N-shaped bar 102, and a torsional spring 105 is fixedly arranged on the middle of the side surface of the hinged bar 104;

[0035] In this embodiment, the L-shaped moving rod 406 can drive the magnetized material to move through the discharge gripper 408, and detect it. The Chinese character-shaped strip 102 can stably move inside the Chinese character-shaped connecting frame 101, and the magnetic pole detection sensor 103 can sense the strength and direction change of the external magnetic field through the built-in magnetic sensitive elements such as Hall elements and magnetic resistance elements, and output electrical signals corresponding to the polarity of the magnetic field, such as high and low levels, analog voltages or digital signals. When the magnetic pole is close, the sensor switches the output state according to the magnetic field direction. The N-pole triggers a high level, and the S-pole triggers a low level.

[0036] Embodiment 2

[0037] Please refer to Figures 6 to 7 The embodiment provides a technical scheme:

[0038] The front and rear sides of the primary magnetizing discharge bin 5 are fixedly provided with transmission shafts 501. The sides of the two transmission shafts 501 are sleeved with a transmission belt 502, the side of the transmission belt 502 is fixedly provided with a plurality of partition plates 503, the transmission belt 502 is drivingly connected through the two transmission shafts 501, the top of the primary magnetizing discharge bin 5 is fixedly provided with a touch sensor 504, the rear side of the top of the primary magnetizing discharge bin 5 is fixedly provided with a second air cylinder 505, and the front side of the telescopic rod of the second air cylinder 505 is fixedly provided with a push plate 506.

[0039] The feeding mechanism 6 comprises a first air cylinder 601, the end of the telescopic rod of the first air cylinder 601 is fixedly provided with a feeding plate 602, the feeding plate 602 is slidingly arranged on the upper side of the transmission belt 502, the right end of the feeding plate 602 abuts against the side of the touch sensor 504, the front and rear sides of the feeding plate 602 are fixedly provided with L-shaped plug blocks 603, the front side of the horizontal block of the front L-shaped plug block 603 is fixedly provided with an L-shaped plate 604, and the top of the L-shaped plate 604 is fixedly provided with a first rack 605.

[0040] In this embodiment, when the touch sensor 504, and the touch sensor 504 can adopt a mechanical contact type sensor, the feeding plate 602 contacts the side of the touch sensor 504 to control the movement of the second air cylinder 505. After the touch sensor 504 is contacted twice by the feeding plate 602, the second air cylinder 505 drives the push plate 506 to move forward, and pushes the material subjected to twice saturation magnetization. Meanwhile, the feeding plate 602 can place the magnetized material, and after the L-shaped plug block 603 moves to the inside of the insertion groove 606, the parallel stability of the feeding plate 602 as a whole can be ensured.

[0041] Embodiment 3

[0042] Please refer to Figures 6 to 10 The embodiment provides a technical scheme:

[0043] The inside of the secondary saturation magnetizing body 7 is provided with an L-shaped slot 707, the L-shaped slot 707 is in sliding fit with the side surface of the L-shaped plate 604, the top of the secondary saturation magnetizing body 7 is fixedly provided with a connecting shaft 701, the side surface of the connecting shaft 701 is fixedly sleeved with a gear 702, the top of the secondary saturation magnetizing body 7 is movably inserted with a second rack 703, the second rack 703 and the first rack 605 are respectively in meshing with the gear 702, the inside of the secondary saturation magnetizing body 7 is provided with two rectangular slots 704, the inside of the two rectangular slots 704 is movably provided with a pressing plate 705, the top of the pressing plate 705 is fixedly provided with two tension springs 706, the top end of the tension spring 706 is fixedly matched with the upper side of the inner wall of the rectangular slot 704, the inside of the secondary saturation magnetizing body 7 is provided with two insertion grooves 606 matched with the L-shaped insertion block 603;

[0044] In the embodiment, when the first cylinder 601 drives the L-shaped plate 604 and the first rack 605 to move leftwards, the gear 702 rotates, and the second rack 703 can be driven to move downwards through the gear 702, so as to press the pressing plate 705 downwards, and the material to be subjected to secondary saturation magnetization is fixed.

[0045] A magnetizing detection method of a magnetizing detection device, comprising the following steps:

[0046] S1, first, when the material to be magnetized passes through the inside of the primary magnetizing body 1 for magnetization, the magnetized material is clamped and fixed by the discharge gripper 408, then the rotating disc 401 and the limiting block 402 in front of the rotating disc 401 are rotated by the rotating shaft of the motor 3, and the C-shaped swing bar 403 is swung left and right by the rotation of the limiting block 402 in the long slot 404, and the L-shaped moving rod 406 and the concave block 407 are limited by the C-shaped block 405, so that when the C-shaped swing bar 403 swings, the L-shaped moving rod 406 and the discharge gripper 408 at the bottom of the L-shaped moving rod 406 move left and right, and the magnetized material is moved to the upper side of the feeding plate 602, and when the L-shaped moving rod 406 moves leftward, the hinged rod 104 is contacted, the hinged rod 104 moves leftward and drives the magnetic pole detection sensor 103 to move leftward, and the magnetized material is detected;

[0047] S2, after the magnetized material completes the primary magnetizing detection, when the magnetized material is in an abnormal state, the whole machine stops moving, when the magnetized material is in a normal state, the feeding plate 602 is moved leftward by the first cylinder 601, the feeding plate 602 drives the magnetized material at the top of the feeding plate 602 to move into the inside of the secondary saturation magnetizing body 7, and when the feeding plate 602 moves, the L-shaped plate 604 and the first rack 605 move leftward, and the gear 702 rotates, the second rack 703 drives the pressing plate 705 to move downwards through the gear 702, and when the feeding plate 602 moves to the position, the magnetized material is subjected to secondary magnetization;

[0048] S3, when the magnetization material secondary magnetization is completed, through the first cylinder 601 drive feeding plate 602 and magnetization material to the right, and make the compression plate 705 upward reset, when the feeding plate 602 to the right to the right, feeding plate 602 at this time with touch sensor 504 contact twice, through the touch sensor 504 control the second cylinder 505 telescopic rod drive push plate 506 to the secondary magnetization completed material forward to the upper side of the transmission belt 502.

[0049] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above examples, the above examples and descriptions described in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A magnetization detection device, comprising a primary magnetization body (1), wherein a groove (2) is provided on the left side of the primary magnetization body (1), characterized in that: A motor (3) is fixedly installed on the rear side of the primary magnetization body (1). The front end of the rotating shaft of the motor (3) extends into the interior of the primary magnetization body (1) and is fixedly connected to a moving mechanism (4) for displacing the neodymium iron boron magnet. The moving mechanism (4) includes a rotating disk (401). The rotating disk (401) is fixedly installed at the front end of the rotating shaft of the motor (3). A limit block (402) is fixedly installed on the front side of the rotating disk (401). A C-shaped swing bar (403) is provided inside the groove (2). The lower horizontal bar of the C-shaped swing bar (403) is rotatably disposed inside the groove (2). The front side of the vertical bar of the C-shaped swing bar (403) is provided with a long groove (404) that cooperates with the limiting block (402). The length of the long groove (404) is equal to the diameter of the rotating disk (401). The limiting block (402) is eccentrically disposed on the front side of the rotating disk (401). Two C-shaped blocks (405) are fixedly disposed on the upper side of the inner wall of the groove (2). An L-shaped moving rod is slidably disposed inside the two C-shaped blocks (405). (406), a concave block (407) is fixedly provided at the bottom of the horizontal bar of the L-shaped moving rod (406). The interior of the concave block (407) slides with the side of the upper horizontal bar of the C-shaped swing bar (403). A discharge gripper (408) is fixedly provided on the side of the vertical bar of the L-shaped moving rod (406). A primary magnetization discharge bin (5) is provided on the left side of the primary magnetization body (1). A feeding mechanism (6) is fixedly provided on the top of the primary magnetization discharge bin (5). A feeding mechanism (6) is provided on the left side of the primary magnetization discharge bin (5). A secondary saturation magnetization body (7) is provided. A connecting frame (101) is fixedly provided on the left side of the primary magnetization body (1). A Chinese character-shaped strip (102) is slidably provided inside the connecting frame (101). The inner wall of the connecting frame (101) is shaped like the Chinese character. A magnetic pole detection sensor (103) is fixedly provided on the front side of the left side of the Chinese character-shaped strip (102). A hinge strip (104) is fixedly provided on the top of the Chinese character-shaped strip (102). A torsion spring (105) is fixedly provided in the middle of the side of the hinge strip (104).

2. The magnetization detection device according to claim 1, characterized in that: The primary magnetizing discharge bin (5) is fixedly provided with drive shafts (501) on both the front and rear sides. The two drive shafts (501) are sleeved with drive belts (502) on their sides. Several partitions (503) are fixedly provided on the side of the drive belts (502). The drive belts (502) are connected by the two drive shafts (501). A touch sensor (504) is fixedly provided on the top of the primary magnetizing discharge bin (5). A second cylinder (505) is fixedly provided on the rear side of the top of the primary magnetizing discharge bin (5). A push plate (506) is fixedly provided on the front side of the telescopic rod of the second cylinder (505).

3. The magnetization detection device according to claim 1, characterized in that: The feeding mechanism (6) includes a first cylinder (601), and a feeding plate (602) is fixedly provided at the end of the telescopic rod of the first cylinder (601). The feeding plate (602) is slidably provided on the upper side of the transmission belt (502). The right end of the feeding plate (602) abuts against the side of the touch sensor (504). L-shaped inserts (603) are fixedly provided on both the front and rear sides of the feeding plate (602). An L-shaped plate (604) is fixedly provided on the front side of the horizontal block of the L-shaped insert (603) located on the front side. A first rack (605) is fixedly provided on the top of the L-shaped plate (604).

4. The magnetization detection device according to claim 3, characterized in that: The secondary saturation magnetization body (7) has an L-shaped groove (707) inside, which slides with the side of the L-shaped plate (604). A connecting shaft (701) is fixedly installed on the top of the secondary saturation magnetization body (7), and a gear (702) is fixedly sleeved on the side of the connecting shaft (701). A second rack (703) is movably inserted into the top of the secondary saturation magnetization body (7), and the second rack (703) and the first rack (605) are respectively connected to the gear. (702) Engagement, the interior of the secondary saturation magnetization body (7) has two rectangular grooves (704), and a pressure plate (705) is slidably arranged inside the two rectangular grooves (704). Two tension springs (706) are fixedly arranged on the top of the pressure plate (705). The top of the tension springs (706) is fixedly engaged with the upper side of the inner wall of the rectangular groove (704). The interior of the secondary saturation magnetization body (7) has two slots (606) that engage with the L-shaped insert (603).

5. A method of using a magnetization detection device, comprising using a magnetization detection device as described in any one of claims 1-4, characterized in that, Includes the following steps: S1. First, after the material to be magnetized passes through the interior of the magnetizing body (1) and is magnetized, the material is clamped and fixed by the discharge gripper (408). Then, the rotating shaft of the motor (3) drives the rotating disk (401) and its front limit block (402) to rotate. The limit block (402) rotates inside the long groove (404), causing the C-shaped swing bar (403) to swing left and right. At the same time, the C-shaped block (405) moves the L-shaped moving rod. (406) and the concave block (407) limit the movement of the C-shaped swing bar (403) so that when the swing bar (403) swings, it drives the L-shaped moving rod (406) and the discharge gripper (408) at its bottom to move left and right, moving the magnetized material to the upper side of the feeding plate (602). At the same time, when the L-shaped moving rod (406) moves to the left, it contacts the hinge bar (104), causing the hinge bar (104) to move to the left and drive the magnetic pole detection sensor (103) to move to the left to detect the magnetized material. S2. After the magnetized material completes one magnetization test, when the magnetized material is in an abnormal state, the entire machine stops moving. When the magnetized material is in a normal state, the first cylinder (601) drives the feeding plate (602) to move to the left, so that the feeding plate (602) drives the magnetized material on its top to move into the interior of the secondary saturation magnetization body (7). At the same time, when the feeding plate (602) moves, it drives the L-shaped plate (604) and the first rack (605) to move to the left, and causes the gear (702) to rotate. The gear (702) drives the second rack (703) to drive the pressing plate (705) to move downward. When the feeding plate (602) moves into place, the magnetized material is magnetized a second time. S3. After the magnetized material is magnetized for the second time, the first cylinder (601) drives the feeding plate (602) and the magnetized material to move to the right, and the pressing plate (705) is reset upward. When the feeding plate (602) moves to the right, the feeding plate (602) contacts the touch sensor (504) twice. The touch sensor (504) controls the extension rod of the second cylinder (505) to drive the push plate (506) to push the material that has been magnetized for the second time forward to the upper side of the transmission belt (502).

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