A magnetic material magnetizing device

Abstract

The present invention relates to the field of magnetic bead magnetization technology, specifically a magnetic material magnetization device, including a base, a chassis fixed on the top of the base, a magnetization coil fixed inside the chassis, the magnetization coil is used to magnetize the magnetic beads passing through the magnetization coil, a magnetization tube connected and fixed at the bottom end of the hopper, a detection box fixed inside the chassis, the bottom end of the magnetization tube connected and fixed to the detection box, and a detection mechanism arranged above the detection box. In the present invention, the detection box is filled with magnetized magnetic beads in a ring shape, and an electric push rod 2 with two plug plates is inserted between adjacent magnetic beads. The gravitational force between adjacent magnetic beads causes the magnetic beads to clamp the plug plate, and by observing whether the reading of the pressure sensor on the inner side of the plug plate is within the standard pressure value range, it is indirectly judged whether the magnetic strength of the magnetic beads after magnetization meets the requirements, thereby realizing automatic detection of the magnetic strength of the magnetic beads after magnetization.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic bead magnetization, in particular to a magnetic material magnetization device. Background Art

[0002] Magnetic beads are a commonly used magnetic material. The magnetization process of magnetic beads usually involves placing the magnetic beads in a device that can generate a magnetic field, and rearranging the magnetic domains inside the magnetic beads through the action of the magnetic field, thereby enhancing or giving the magnetic beads magnetism. Commonly used magnetization equipment mainly includes magnetizers and magnetization coils. The magnetization process of magnetic beads usually involves placing the magnetic beads in a device that can generate a magnetic field, and rearranging the magnetic domains inside the magnetic beads through the action of the magnetic field, thereby enhancing or giving the magnetic beads magnetism;

[0003] During the magnetization process of magnetic beads, if the magnetic beads stay in the magnetization coil for too short a time, the magnetic beads that have not been fully magnetized may have weak magnetism. In addition, surface contamination of the magnetic beads or aging of the magnetic beads will weaken the magnetism of the magnetic beads after magnetization. Although the magnetization equipment in the prior art can make the magnetic beads passing through the magnetization coil generate magnetism, it is not easy to detect whether the magnetic strength of the magnetic beads after magnetization meets the subsequent use requirements of the magnetic beads, which is not conducive to removing the magnetic beads with weak magnetism. Summary of the invention

[0004] The object of the present invention is to provide a magnetic material magnetizing device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A magnetic material magnetizing device, comprising:

[0007] A base, a chassis is fixed on the top of the base, and a hopper for containing magnetic beads is fixed on the top of the chassis;

[0008] The magnetizing coil is fixed inside the chassis and is used to magnetize the magnetic beads passing through the magnetizing coil;

[0009] A magnetizing tube, the top end of which is connected and fixed to the hopper, and the magnetizing tube is inserted into the magnetizing coil;

[0010] The detection box is fixed inside the chassis, and an annular chamber for accommodating magnetic beads is provided inside the detection box, and the bottom end of the magnetizing tube is connected and fixed to the detection box;

[0011] The detection mechanism is arranged above the detection box, and the detection mechanism includes an electric push rod 2, and a circular block 2 is rotatably arranged at the output end of the electric push rod 2, and two plug plates are fixed on the bottom surface of the circular block 2, and a pressure sensor is embedded and installed on the inner side of the plug plate;

[0012] The driving mechanism is fixed in the middle of the detection box and is used to drive the second electric push rod to rotate and detect the magnetic magnitudes of beads at different positions.

[0013] There are two discharge pipes, both of which are connected and fixed to the detection box. The two discharge pipes are respectively used to convey qualified and unqualified beads to the outside.

[0014] There are two blanking mechanisms, which are respectively arranged inside the corresponding discharge pipes and are used to control the discharge pipes to release beads.

[0015] Furthermore, a magnetizer for driving the magnetization coil to magnetize the beads is fixed inside the chassis, and support rings fixedly connected to the chassis are fixed at both ends of the magnetization coil.

[0016] Furthermore, a first connecting pipe is connected and fixed to the top end of the magnetization pipe, and a second connecting pipe is connected and fixed to the bottom end of the magnetization pipe.

[0017] Furthermore, feeding mechanisms are arranged at both ends of the magnetization pipe. The feeding mechanism includes:

[0018] A first electric push rod is fixed outside the magnetization pipe, and a first sliding rod is fixed to the output end of the first electric push rod.

[0019] A first circular block, and an arc-shaped plate is fixed to one side of the first circular block.

[0020] Furthermore, a ring-shaped cover plate is rotatably connected to the top of the detection box, a bracket fixedly connected to the inner side of the chassis is fixed to the bottom surface of the detection box, and a plurality of round holes are formed in the inner bottom surface of the annular chamber of the detection box.

[0021] Furthermore, an arc-shaped block is fixed to the outside of the plug board, and a gear is fixed to the top of the second circular block.

[0022] Furthermore, a pressing block is slidably connected to the bottom surface of the second circular block, and a compression spring is fixed between the pressing block and the second circular block.

[0023] Furthermore, the driving mechanism includes:

[0024] A C-shaped frame is fixed in the middle of the detection box. Cross beams are fixed to both ends of the C-shaped frame, and a toothed ring is fixed between the two cross beams.

[0025] A motor is fixed in the middle of the detection box, and a connecting shaft is fixed to the output end of the motor.

[0026] A transmission rod is fixedly connected to the connecting shaft, and one end of the transmission rod is fixedly connected to the second electric push rod.

[0027] Furthermore, a branch pipe is connected and fixed to the outer side of the discharge pipe, and an extension pipe is connected and fixed to one end of the branch pipe away from the discharge pipe.

[0028] Further, the material unloading mechanism comprises:

[0029] The electric push rod three is fixedly connected to the discharge pipe, and the output end of the electric push rod three is fixed with a sliding rod three;

[0030] The circular block three is rotatably connected to the top end of the sliding rod three;

[0031] Furthermore, the bottom end of the discharge pipe is sealed, and a limiting column is fixed on the inner bottom surface of the discharge pipe, and the limiting column abuts against the circular block three to make it rotate.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The magnetized magnetic beads are transported to the second position of the connecting tube through the magnetizing tube, and then the feeding mechanism pushes the magnetic beads to the inside of the annular chamber of the detection box, so that multiple magnetic beads are displayed in a ring shape inside the detection box. The electric push rod 2 carries the two plug-in plates on the circular block 2 and is respectively plugged into the gap positions of two adjacent magnetic beads. The magnetized magnetic beads have magnetism that enables the adjacent magnetic beads to be adsorbed and fixed together, and then the adjacent magnetic beads are squeezed by the plug-in plate with the help of magnetic attraction. A pressure sensor is embedded and fixed on the inner side of the plug-in plate, and the indication of the pressure sensor indirectly reflects the magnitude of the attraction of the magnetic beads on both sides of the plug-in plate. When the indication of the pressure sensor is lower than the reference value, it means that the magnetic strength of the magnetic beads at this position does not meet the requirements, thereby realizing the detection of the magnetic strength of the magnetic beads.

[0034] 2. Through the two plug-in plates plugged into the outside of the magnetic beads with unqualified magnetic strength, the motor drives the connecting shaft to rotate so that the two plug-in plates transfer the magnetic beads to the upper pipe mouth position of the discharge pipe, and the electric push rod three drives the circular block three to move downward from the circular hole position of the detection box. At the same time, under the extrusion action of the extrusion block on the bottom surface of the circular block two, the unqualified magnetic beads between the two plug-in plates fall into the discharge pipe, and then are removed along the branch pipe and the extension pipe. The magnetization equipment is automatically removed to realize the automatic removal of magnetic beads with unqualified magnetic strength.

[0035] 3. The motor drives the connecting shaft to rotate clockwise, so that the electric push rod 2 can be rotated with the annular cover at the circular notch of the annular cover on the top of the detection box, which is convenient for adjusting the two plug-in plates to the top of different magnetic beads. Similarly, the output end of the electric push rod 2 can be connected with the plug-in plate to the outside of the magnetic bead for magnetic strength detection, which is convenient for magnetic strength detection of magnetic beads at different positions inside the detection box.

[0036] 4. The electric push rod 2 moves the gear on the circular block 2 down to a state of meshing with the gear ring. The motor output end rotates counterclockwise with the connecting shaft to make the gear rotate counterclockwise on the outside of the gear ring. At this time, the gear rotates counterclockwise itself while carrying the circular block 2 around the connecting shaft, so that the larger area on the arc block outside the plug plate rotates and squeezes between adjacent magnetic beads, thereby squeezing multiple magnetic beads inside the detection box against each other. Later, qualified magnetic beads are released through the discharge pipe to the external optical microscope observation table, so that the surface of the magnetic beads can be visually observed to be squeezed and damaged, which is convenient for screening out magnetized magnetic beads with qualified magnetism and hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the internal structure of the chassis in the present invention;

[0039] Figure 3 It is a schematic diagram of the internal structure of the magnetizing tube and the detection box in the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the magnetizing tube in the present invention;

[0041] Figure 5 The present invention Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0042] Figure 6 The present invention Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0043] Figure 7 It is a schematic diagram of the structure of the detection box and the annular cover plate in the disassembled three-dimensional state in the present invention;

[0044] Figure 8 It is a schematic diagram of the structure of the discharge pipe and the feeding mechanism in the present invention;

[0045] Fig. 9 It is a schematic diagram of the structure of the detection mechanism and the driving mechanism in the present invention;

[0046] Fig.10 This is a simplified structural diagram of the circular block 2, the detection plate, and the magnetic bead body in the present invention;

[0047] Fig.11 It is a schematic diagram of the internal structure of the circular block 2 in the present invention.

[0048] In the figure: 100, base; 110, chassis; 111, hopper; 112, magnetizer; 200, magnetizing coil; 300, magnetizing tube; 310, connecting pipe 1; 320, connecting pipe 2; 330, feeding mechanism; 331, electric push rod 1; 332, sliding rod 1; 333, circular block 1; 334, arc plate; 400, detection box; 410, annular cover plate; 411, guide rail; 420, bracket; 430, round hole; 500, detection mechanism; 510, electric push rod 2; 520, circular block 2; 530, insertion plate; 531, arc block; 540, gear; 541, connecting ring; 550, extrusion block; 551, extrusion spring; 600, driving mechanism; 610, C-shaped frame; 611, cross beam; 620, motor; 621, connecting shaft; 630, transmission rod; 700, discharge pipe; 710, branch pipe; 711, extension pipe; 720, limit post; 800, blanking mechanism; 810, electric push rod 3; 811, sliding rod 3; 820, circular block 3; 900, magnetic bead body. Specific implementation mode

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] Example 1, please refer to Figure 1-11In an embodiment of the present invention, a magnetic material magnetizing device includes a base 100, a chassis 110 is fixed on the top of the base 100, a hopper 111 for holding magnetic beads is fixed on the top of the chassis 110, a magnetizing coil 200 is fixed inside the chassis 110, the magnetizing coil 200 is used to magnetize the magnetic beads passing through the magnetizing coil 200, a magnetizing tube 300 is connected and fixed at the bottom end of the hopper 111, the magnetizing tube 300 is plugged into the magnetizing coil 200, a detection box 400 is fixed inside the chassis 110, an annular chamber for accommodating magnetic beads is opened inside the detection box 400, the bottom end of the magnetizing tube 300 is connected and fixed to the detection box 400, and a detection mechanism is arranged above the detection box 400 500, the detection mechanism 500 includes an electric push rod 510, the output end of the electric push rod 510 is rotatably provided with a circular block 520, the bottom surface of the circular block 520 is fixed with two plug plates 530, the inner side of the plug plates 530 is embedded with a pressure sensor, a driving mechanism 600 is arranged in the middle of the detection box 400, the driving mechanism 600 is used to drive the electric push rod 510 to rotate to detect the magnetic size of magnetic beads at different positions, the bottom surface of the detection box 400 is connected and fixed with two discharge pipes 700, the two discharge pipes 700 are respectively used to transport qualified and unqualified magnetic beads to the outside; a discharge pipe 700 is arranged inside with a discharge mechanism 800, the discharge mechanism 800 is used to control the discharge pipe 700 to release the magnetic beads.

[0051] Specifically, the magnetizing coil 200 is sleeved on the outside of the magnetizing tube 300, so that the magnetic beads passing through the magnetizing tube 300 can achieve the magnetizing effect, and the magnetized magnetic beads are transported to the inside of the detection box 400 through the magnetizing tube 300. After the inside of the detection box 400 is filled with magnetic beads in a ring shape, the electric push rod 510 on the detection box 400 with two plug plates 530 is inserted between adjacent magnetic beads, and the attractive force between the adjacent magnetic beads causes the magnetic beads to clamp the plug plates 530. By observing the pressure sensor inside the plug plates 530, the magnetic beads are Whether the number is within the standard pressure range can be used to indirectly determine whether the magnetic strength of the magnetic beads after magnetization meets the requirements, so as to realize automatic detection of the magnetic strength of the magnetic beads after magnetization. The driving mechanism 600 can drive the two plug plates 530 to rotate to different positions around the axis of the detection box 400, so that the plug plates 530 can detect the magnetic strength of the magnetic beads at different positions. The two plug plates 530 can clamp unqualified magnetic beads and move them to the mouth of the discharge pipe 700, so as to automatically remove the unqualified magnetic beads.

[0052] like Figure 1 As shown, in this embodiment, a magnetizer 112 for driving a magnetizing coil 200 to magnetize magnetic beads is fixed inside the chassis 110 , and support rings fixedly connected to the chassis 110 are fixed at both ends of the magnetizing coil 200 .

[0053] In this embodiment, the magnetizer 112 is an existing component, and the specific working principle of cooperating with the magnetizing coil 200 for magnetization is not described in detail. Two connecting rods are fixed to the outer side of the support ring, and the connecting rods are fixedly connected to the chassis 110.

[0054] like Figure 3-6 As shown, in this embodiment, the top end of the magnetizing tube 300 is connected and fixed with a connecting tube 1 310 , and the bottom end of the magnetizing tube 300 is connected and fixed with a connecting tube 2 320 .

[0055] In this embodiment, connecting tube 1 310 is connected and fixed to hopper 111 for receiving magnetic beads falling from hopper 111, and the top of connecting tube 2 320 is connected and fixed to detection box 400 for transporting magnetized magnetic beads to the inside of detection box 400 for magnetic strength detection.

[0056] like Figure 7 As shown, in this embodiment, the top of the detection box 400 is rotatably connected to a ring-shaped cover plate 410, the bottom surface of the detection box 400 is fixed with a bracket 420 fixedly connected to the inner side of the chassis 110, and the inner bottom surface of the annular chamber of the detection box 400 is provided with a plurality of circular holes 430.

[0057] In this embodiment, the annular cover 410 is sealed at the open position of the detection box 400 to prevent the magnetic beads from escaping from the detection box 400. A circular hole 430 is connected and fixed to the connecting tube 320 for transporting the magnetic beads into the detection box 400. The other two circular holes 430 are respectively used to release the magnetic beads with qualified magnetism and hardness and the magnetic beads with unqualified magnetism and hardness.

[0058] like Figure 7 and Fig. 9 As shown, in the present embodiment, a guide rail 411 is fixed to the bottom surface of the annular cover plate 410, and the guide rail 411 is arc-shaped. A slide groove is provided on the top surface of the detection box 400, and the guide rail 411 slides inside the slide groove, so that the annular cover plate 410 can be rotated and engaged on the detection box 400 without being separated from the detection box 400. A circular notch is provided on the annular cover plate 410, and the circular notch facilitates the two plug-in plates 530 to be plugged into the magnetic beads inside the detection box 400. The annular cover plate 410 can rotate synchronously with the rotation of the plug-in plate 530 around the connecting shaft 621.

[0059] like Fig.10 and Fig.11 As shown, in this embodiment, an arc block 531 is fixed on the outer side of the inserting plate 530 , and a gear 540 is embedded and fixed on the top of the circular block 520 .

[0060] In this embodiment, the thickness of the arc block 531 gradually becomes thicker from the end in contact with the magnetic beads, so that the arc block 531 can be squeezed between two adjacent magnetic beads during the rotation of the plug plate 530, so that the adjacent magnetic beads are squeezed against each other, and then it is detected whether the magnetic beads are damaged after being compressed. The reason why magnetic beads need to be tested for compression strength is that the physical properties and strength requirements of magnetic beads depend on their application scenarios. In biomedical research, magnetic beads are often used for cell sorting, extraction and purification of nucleic acids or proteins. These magnetic beads need to have sufficient strength to resist the operating pressure in automated equipment while maintaining their magnetism to achieve effective separation.

[0061] like Fig.10 and Fig.11 As shown, in this embodiment, a connecting ring 541 is fixed to the bottom surface of the gear 540, and a rotating ring-shaped groove fixedly connected to the connecting ring 541 is opened on the top surface of the circular block 520. When the electric push rod 510 moves down with the gear 540 to a state of meshing with the gear ring, the transmission rod 630 rotates the electric push rod 510 around the connecting shaft 621, which causes the gear 540 to rotate with the circular block 520, thereby enabling the arc block 531 on the plug plate 530 to rotate and squeeze the magnetic beads. The transmission rod 630 rotates the electric push rod 510 in the opposite direction, which causes the gear 540 to rotate with the circular block 520 in the opposite direction, thereby facilitating the rotation and removal of the arc block 531 squeezed between the magnetic beads.

[0062] like Fig. 9 As shown, in this embodiment, the plug board 530 is arc-shaped, and the bottom surface of the plug board 530 is provided with rounded corners to facilitate plugging into the gap between adjacent magnetic beads. The pressure-sensitive element of the pressure sensor installed on the inner side of the plug board 530 can be a curved surface, such as using a curved diaphragm as a pressure-sensitive element, so as to better sense pressure changes and convert them into measurable electrical signals. The specific working principle of the pressure sensor is not elaborated here.

[0063] like Fig.11 As shown, in this embodiment, the bottom surface of the second circular block 520 is slidably connected with a pressing block 550 , and a pressing spring 551 is fixed between the pressing block 550 and the second circular block 520 .

[0064] In this embodiment, after the circular block 520 is pressed onto the upper position of the magnetic beads, the extrusion spring 551 is in a compressed state, and the compression force of the extrusion spring 551 drives the extrusion block 550 to exert a downward thrust on the magnetic beads. After the two plug plates 530 transfer the magnetic beads to the nozzle position of the discharge tube 700, the extrusion block 550 enables the magnetic beads to fall along the two plug plates 530 through the circular hole 430 into the discharge tube 700.

[0065] like Fig. 9As shown, in this embodiment, the driving mechanism 600 includes a U-shaped frame 610 fixed to the middle of the detection box 400. Cross beams 611 are fixed to both ends of the U-shaped frame 610. A toothed ring is fixed between the two cross beams 611. A motor 620 is fixed to the middle of the detection box 400. A connecting shaft 621 is fixed to the output end of the motor 620. A transmission rod 630 is fixedly connected to the top of the connecting shaft 621. One end of the transmission rod 630 is fixedly connected to the second electric push rod 510.

[0066] In this embodiment, when the motor 620 drives the connecting shaft 621 to rotate clockwise, the transmission rod 630 drives the second electric push rod 510 to rotate clockwise around the connecting shaft 621. The second electric push rod 510 drives the magnetic beads between the two plug plates 530 through the second circular block 520 to be transferred to the position of the round hole 430 inside the detection box 400 for blanking. When the plug plate 530 is not inserted into the magnetic beads, the plug plate 530 can be pre-transferred above the magnetic beads to be detected, and then the second electric push rod 510 drives the plug plate 530 to be inserted into the magnetic beads through the second circular block 520, so as to realize targeted sampling to detect the magnetic strength of the magnetic beads. In the above process, the gear 540 is arranged above the toothed ring, so that the gear 540 rotates by itself without meshing with the toothed ring. The output end of the second electric push rod 510 extends to make the gear 540 mesh with the toothed ring. When the motor 620 drives the transmission rod 630 to rotate counterclockwise, the gear 540 rotates around the toothed ring to make the second circular block 520 rotate by itself, and then the two plug plates 530 rotate counterclockwise, so that the arc-shaped block 531 is squeezed between adjacent magnetic beads, making the adjacent magnetic beads in a state of extrusion hardness test. Then, the second electric push rod 510 is reversely driven by the transmission rod 630 to rotate clockwise around the connecting shaft 621, so that the gear 540 rotates clockwise after meshing outside the toothed ring, which is convenient to rotate the arc-shaped block 531 that has rotated between the magnetic beads out, and the arc-shaped block 531 no longer squeezes the magnetic beads.

[0067] As Figure 2 and Figure 3 shown, in this embodiment, a branch pipe 710 is fixedly connected and communicated to the outside of the discharge pipe 700. One end of a branch pipe 710背离出料管700的一端连通固定有延伸管711,延伸管711可以将不合格的磁珠从一个方向输出,远离延伸管711的分支管710能够将合格的磁珠从另一端输出。

[0068] As Figure 3 and Fig. 9 shown, in this embodiment, a plurality of magnetic beads are arranged inside the detection box 400. When the two plug plates 530 are used to move the magnetic beads to the position of the round hole 430, the magnetic beads fall from the round hole 430 under the extrusion of the extrusion block 550. Then, the feeding mechanism 330 inside the second connecting pipe 320 operates to supplement and add a magnetic bead to the inside of the detection box 400, so that a plurality of magnetic beads are always arranged in a ring inside the detection box 400, which is convenient to use the plug plate 530 to rotate and squeeze the magnetic beads later to achieve the effect of testing the hardness of the magnetic beads.

[0069] like Fig.10 As shown, in this embodiment, it is assumed that two plug-in boards 530 are plugged between the three magnetic beads a, b, and c. When the pressure sensor values ​​on the two plug-in boards 530 all meet the pressure measurement standard values, it means that the magnetism of the three magnetic beads a, b, and c is good; if the pressure value between a and b is less than the standard value, and the pressure value between b and c is normal, it means that the magnetism of the a magnetic bead is unqualified, and the magnetism of the b magnetic bead is good; if the pressure value between a and b is normal, and the pressure value between b and c is less than the standard value, it means that the magnetism of the c magnetic bead is unqualified, and the magnetism of the b magnetic bead is good; if the pressure values ​​on the two plug-in boards 530 are less than the standard values, the three magnetic beads a, b, and c are likely to be unqualified, and the two plug-in boards 530 need to be plugged into the outside of the a magnetic bead and the c magnetic bead respectively for re-testing, and the detection principle is the same as above.

[0070] Embodiment 2, based on embodiment 1, in order to make the hopper 111 deliver magnetic beads to the magnetizing tube 300 one by one, the magnetizing tube 300 delivers magnetic beads to the detection box 400 one by one.

[0071] like Figure 5 and Figure 6 As shown, in this embodiment, a feeding mechanism 330 is provided at both ends of the magnetizing tube 300, and the feeding mechanism 330 includes an electric push rod 331 fixed on the outside of the magnetizing tube 300, a sliding rod 332 is fixed to the output end of the electric push rod 331, the sliding rod 332 is fixedly connected to a circular block 333, and an arc plate 334 is fixed to one side of the circular block 333.

[0072] In this embodiment, support seats are fixed to the inner side of the top of the magnetizing tube 300 and the inner side of the connecting tube 2 320, and the slide bar 1 332 is slidably connected to the support seats at the corresponding positions, so that the slide bar 1 332 can move stably with the circular block 1 333, and the circular block 1 333 at the top of the magnetizing tube 300 slides inside the magnetizing tube 300 to push the magnetic beads falling from the connecting tube 1 310, and the circular block 1 333 at the bottom of the magnetizing tube 300 slides inside the connecting tube 2 320 to push the magnetic beads falling along the magnetizing tube 300 into the annular chamber of the detection box 400.

[0073] like Figure 3 , Figure 4 and Figure 5As shown, in the present embodiment, when it is necessary to release the magnetic beads in the hopper 111 into the magnetizing tube 300 for magnetization, the output end of the electric push rod 331 at the top position of the magnetizing tube 300 is extended, so that the slide rod 332 moves with the circular block 333 to the left side of the bottom end of the connecting tube 310, and the connecting tube 310 without the shielding of the arc plate 334 releases a magnetic bead to fall to the inner top of the magnetizing tube 300, and then the output end of the electric push rod 331 contracts to make the circular block 333 push the magnetic bead to the position of the magnetizing coil 200 of the magnetizing tube 300. During the process of pushing the magnetic beads, the arc plate 334 is again shielded at the bottom end of the connecting tube 310 to prevent too many magnetic beads from falling. Repeating the above operation can make the magnetic beads inside the hopper 111 roll one by one to the position of the magnetizing coil 200 of the magnetizing tube 300, and the magnetic beads passing through the magnetizing coil 200 are magnetized, and then rolled along the magnetizing tube 300 to the position of the connecting tube 2 320.

[0074] like Figure 3 , Figure 4 and Figure 6 As shown, in the present embodiment, when it is necessary to transport the magnetic beads magnetized at the bottom of the magnetizing tube 300 along the connecting tube 320 to the inside of the detection box 400, the output end of the electric push rod 331 fixed on the outside of the connecting tube 320 is extended to make the slide bar 332 move downward with the circular block 333. When the circular block 333 moves down to the bottom end of the tube mouth of the magnetizing tube 300, a magnetic bead rolls to the top surface of the circular block 333 under the action of its own gravity. Then the output end of the electric push rod 331 shrinks in length to make the slide bar 332 move upward with the circular block 333, and transports the magnetic beads falling from the magnetizing tube 300 along the connecting tube 320 to the inside of the detection box 400. In this process, the arc plate 334 blocks the bottom tube mouth of the magnetizing tube 300 to prevent too many magnetic beads from falling.

[0075] Embodiment 3, based on embodiment 1, is to enable the magnetic beads in the detection box 400 to fall into the discharge tube 700 one by one.

[0076] like Figure 8 As shown, in this embodiment, the unloading mechanism 800 includes an electric push rod 3 810 fixedly connected to the discharge pipe 700, a sliding rod 3 811 is fixed to the output end of the electric push rod 3 810, a circular block 3 820 is rotatably connected to the top of the sliding rod 3 811, a limiting column 720 is fixed to the inner bottom surface of the discharge pipe 700, the bottom end of the discharge pipe 700 is sealed, and the limiting column 720 abuts against the circular block 3 820 to make it rotate.

[0077] In this embodiment, when the magnetic beads are released from the detection box 400 through the discharge tube 700, the two plug plates 530 rotate the magnetic beads to the position of the circular hole 430, and the discharge tube 700 is connected below the circular hole 430. Then the electric push rod three 810 moves downward with the slide rod three 811, so that a magnetic bead on the circular block three 820 falls into the discharge tube 700 along with the circular block three 820. The limiting column 720 inside the discharge tube 700 pushes the circular block three 820 upward, causing the circular block three 820 to tilt, thereby causing the magnetic bead to slide from the circular block three 820 along the branch tube 710.

[0078] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0079] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A magnetic material magnetizing device, characterized in that: include: A base (100), a chassis (110) being fixed on the top of the base (100), and a hopper (111) for containing magnetic beads being fixed on the top of the chassis (110); A magnetizing coil (200) is fixed inside the chassis (110) and is used to magnetize the magnetic beads passing through the magnetizing coil (200); A magnetizing tube (300) whose top end is connected and fixed to the hopper (111), and the magnetizing tube (300) is inserted into the magnetizing coil (200); The detection box (400) is fixed inside the chassis (110), and an annular chamber for accommodating magnetic beads is provided inside the detection box (400). The bottom end of the magnetizing tube (300) is connected and fixed to the detection box (400); The detection mechanism (500) is arranged above the detection box (400), and the detection mechanism (500) comprises a second electric push rod (510), the output end of the second electric push rod (510) is rotatably connected to a second circular block (520), and two plug plates (530) are fixed to the bottom surface of the second circular block (520), and a pressure sensor is embedded and installed on the inner side of the plug plate (530); The driving mechanism (600) is fixed in the middle of the detection box (400) and is used to drive the second electric push rod (510) to rotate to detect the magnetic magnitude of the magnetic beads at different positions; There are two discharge pipes (700), both of which are connected and fixed to the detection box (400), and the two discharge pipes (700) are used to transport qualified and unqualified magnetic beads to the outside respectively; There are two discharge mechanisms (800), which are respectively arranged inside the discharge pipe (700) at corresponding positions and are used to control the discharge pipe (700) to release the magnetic beads.

2. The magnetic material magnetizing device according to claim 1, characterized in that: A magnetizer (112) for driving a magnetizing coil (200) to magnetize the magnetic beads is fixed inside the chassis (110), and support rings fixedly connected to the chassis (110) are fixed at both ends of the magnetizing coil (200).

3. The magnetic material magnetizing device according to claim 1, characterized in that: The top end of the magnetizing tube (300) is connected and fixed with a connecting tube 1 (310), and the bottom end of the magnetizing tube (300) is connected and fixed with a connecting tube 2 (320).

4. The magnetic material magnetizing device according to claim 1, characterized in that: Both ends of the magnetizing tube (300) are provided with a feeding mechanism (330), and the feeding mechanism (330) comprises: An electric push rod 1 (331) is fixed on the outside of the magnetizing tube (300), and a sliding rod 1 (332) is fixed on the output end of the electric push rod 1 (331); A circular block (333) is provided with an arc-shaped plate (334) fixed on one side of the circular block (333).

5. The magnetic material magnetization device according to claim 1, characterized in that: The top of the detection box (400) is rotatably connected to an annular cover plate (410), the bottom surface of the detection box (400) is fixed with a bracket (420) fixedly connected to the inner side of the chassis (110), and the inner bottom surface of the annular chamber of the detection box (400) is provided with a plurality of circular holes (430).

6. The magnetic material magnetizing device according to claim 1, characterized in that: An arc-shaped block (531) is fixed on the outer side of the insert plate (530), and a gear (540) is embedded and fixed on the top of the second circular block (520).

7. The magnetic material magnetizing device according to claim 1, characterized in that: The bottom surface of the second circular block (520) is slidably connected to a pressing block (550), and a pressing spring (551) is fixed between the pressing block (550) and the second circular block (520).

8. The magnetic material magnetization device according to claim 1, characterized in that: The driving mechanism (600) comprises: The C-shaped frame (610) is fixed in the middle of the detection box (400). Cross beams (611) are fixed at both ends of the C-shaped frame (610), and a toothed ring is fixed between the two cross beams (611). The motor (620) is fixed in the middle of the detection box (400), and a connecting shaft (621) is fixed to the output end of the motor (620). The transmission rod (630) is fixedly connected to the connecting shaft (621), and one end of the transmission rod (630) is fixedly connected to the second electric push rod (510).

9. The magnetic material magnetizing device according to claim 1, characterized in that: A branch pipe (710) is fixedly connected and communicated to the outside of the discharge pipe (700), and an extension pipe (711) is fixedly connected and communicated to one end of a branch pipe (710) departing from the discharge pipe (700).

10. The magnetic material magnetization device according to claim 1, characterized in that: The blanking mechanism (800) includes: The third electric push rod (810) is fixedly connected to the discharge pipe (700), and a sliding rod three (811) is fixed to the output end of the third electric push rod (810). The circular block three (820) is rotatably connected to the top end of the sliding rod three (811). The bottom end of the discharge pipe (700) is sealed, and a limiting column (720) is fixed to the inner bottom surface of the discharge pipe (700). The limiting column (720) abuts against the circular block three (820) to make it rotate.

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