A magnetic steel screening device

Abstract

The application discloses a magnetic steel screening device, which comprises a rotating disc, a tray, a discharging port accessory, a Hall sensor module, a discharging port steering engine module and a stepping motor. The rotating disc is installed on the tray and can rotate relative to the tray. The magnetic steel to be screened is placed in the discharging port accessory. The stepping motor drives the rotating disc to rotate, so that the magnetic steel adhered together due to magnetic force in the discharging port accessory is separated into independent individuals. The Hall sensor module measures the magnetic induction intensity of the magnetic steel. Different discharging port steering engine modules are controlled according to the different magnetic induction intensities, and the magnetic steel falls into different discharging ports. Through the ingenious structural design, the application solves the problem of how to separate the magnetic steel adhered together due to magnetic force into independent individuals, realizes the automatic discharging, measuring and discharging of the magnetic steel, and effectively improves the screening efficiency of the magnetic steel.

Description

Technical Field

[0001] This invention relates to the field of automation, and in particular to a magnetic steel screening device. Background Technology

[0002] To advance the production testing and R&D of deflection magnetic strips for positioners, a testing device is needed for the magnets, a key material in deflection magnetic strips, to measure and screen the surface magnetic field strength of the magnets. However, existing parts screening equipment on the market is designed for independent, non-adhesive parts. Magnets tend to stick together due to magnetic force, making these existing devices unsuitable. Therefore, it is necessary to develop a completely new testing device to meet the screening requirements of the magnets. Summary of the Invention

[0003] To address the aforementioned problems in the existing technology, this invention provides a magnetic steel screening device. A stepper motor drives a rotating disk to separate magnets that are stuck together by magnetic force in the feeding port accessories into individual pieces. A Hall sensor module then measures the magnetic induction intensity of the magnets. Finally, different discharge port servo modules are controlled according to the different magnetic induction intensities, so that the magnets fall into different discharge ports.

[0004] The technical solution of the present invention is as follows: A magnetic steel screening device includes a rotating disk 1, a tray 2, a discharge port accessory 3, a Hall sensor module 4, a discharge port servo motor module 5, and a stepper motor 6. The rotating disk 1 is a circular thin plate structure with a through hole at the center, called the motor mounting hole 7; through holes are provided at non-center positions of the rotating disk 1, called magnet holes 8; the number of magnet holes 8 is greater than 1, and the central axis of the magnet holes 8 is parallel to the central axis of the motor mounting hole 7; The tray 2 is provided with a circular groove, called the rotating disk mounting groove 9; a through hole is provided at the center of the rotating disk mounting groove 9, called the motor shaft hole 10; a through hole is provided at a non-center position of the rotating disk mounting groove 9, called the discharge port 11; the central axis of the discharge port 11 is parallel to the central axis of the motor shaft hole 10; the rotating disk 1 is set in the rotating disk mounting groove 9, and the central axis of the motor mounting hole 7 coincides with the central axis of the motor shaft hole 10; A plane perpendicular to the central axis of the motor shaft hole 10 is called the projection plane; the projection of the magnet hole 8 onto the projection plane is called the magnet hole projection; the projection of the discharge port 11 onto the projection plane is called the discharge port projection; during the rotation of the rotating disk 1 around the central axis of the motor mounting hole 7, an angle can be found such that the magnet hole projection is completely blocked by the discharge port projection. The body of the stepper motor 6 is fixedly connected to the tray 2, and the output shaft of the stepper motor 6 passes through the motor shaft hole 10 of the tray 2 and is fixedly connected to the motor mounting hole 7 of the rotating disk 1. The central axes of the motor mounting hole 7 and the motor shaft hole 10 are both perpendicular to the horizontal plane. The feeding port accessory 3 is provided with a through hole, called the feeding port 12, and the magnet 13 to be screened is placed in the feeding port 12; the feeding port accessory 3 is fixedly connected to the tray 2, and the feeding port 12 is located above the magnet hole 8; the central axis of the feeding port 12 is parallel to the central axis of the motor mounting hole 7. The discharge port servo module 5 includes a hinge 14; the discharge port servo module 5 is fixedly connected to the tray 2, and the hinge 14 is located inside the discharge port 11; the projection of the hinge 13 on the projection surface is called the hinge projection; when the projection of the magnet hole is completely blocked by the discharge port projection, the hinge 14 rotates under the control of the discharge port servo module 5, and two angles can be found, one angle so that the hinge projection completely blocks the magnet hole projection, and the other angle so that the hinge projection does not block the magnet hole projection at all; When the output shaft of the stepper motor 6 rotates, the rotating disk 1 moves in a circular motion relative to the tray 2, and the magnet 13 inside the magnet hole 8 moves with the rotating disk 1. When the rotating disk 1 rotates to the position where the central axis of the discharge port coincides with the central axis of the magnet hole 8, the magnet 13 inside the discharge port falls from the discharge port into the magnet hole 8. When the rotating disk 1 rotates to the position where the projection of the magnet hole is completely blocked by the projection of the discharge port, if the projection of the hinge does not completely block the projection of the magnet hole, the magnet 13 inside the magnet hole 8 falls from the magnet hole 8 into the discharge port 11. The Hall sensor module 4 is fixedly connected to the tray 2. When the magnet 13 inside the magnet hole 8 passes through the detection area of ​​the Hall sensor module 4, the Hall sensor module 4 measures the magnetic induction intensity of the magnet 13.

[0005] Furthermore, the number of the discharge port servo module 5 and the discharge port 11 are both 4.

[0006] Furthermore, the number of magnetic holes 8 is 8.

[0007] Furthermore, the radius of the magnetic hole 8 is equal to the radius of the feed port 12.

[0008] Furthermore, the hinge 14 is a circular thin plate structure, and its cross-sectional shape is a closed figure composed of an arc and a straight line, with the center of the arc located inside the closed figure; the discharge port servo module 5 drives the hinge 14 to perform circular motion around the central axis of the arc.

[0009] Furthermore, if the projection of one magnet hole is blocked by the projection of the discharge port, then the projections of the remaining magnet holes will also be blocked by the projection of the discharge port.

[0010] Furthermore, the magnetic steel screening device includes a main control module 15; the main control module 15 is connected to the Hall sensor module 4, the discharge port servo module 5, and the stepper motor 6, reads the magnetic induction intensity of the Hall sensor module 4, and controls the rotation angle of the discharge port servo module 5 and the stepper motor 6.

[0011] Furthermore, the rotating disk 1 and the tray 2 are made of aluminum alloy.

[0012] Furthermore, the workflow is as follows: S1. Set filtering parameters on the main control module 15; the filtering parameters refer to the correspondence between the magnetic induction intensity of the discharge port servo module 5 and the Hall sensor module 4. If the magnetic induction intensity of the Hall sensor module 4 is within a specific range, rotate the corresponding discharge port servo module 5 so that the magnet 13 falls into the discharge port 11 blocked by the discharge port servo module 5; the number of filtering parameters is equal to the number of discharge port servo modules 5. S2. Place the magnet 13 to be screened into the feed port 12; S3. The main control module 15 controls the stepper motor 6 to rotate, and the rotating disk 1 rotates under the drive of the stepper motor 6. When the central axis of the magnet hole 8 of the rotating disk 1 coincides with the central axis of the feeding port 12, the magnet 13 inside the feeding port 12 falls into the magnet hole 8. S4. When the magnet hole 8 rotates to the detection area of ​​the Hall sensor module 4, the Hall sensor module 4 measures the magnetic induction intensity of the magnet 13. S5. The main control module 15 reads the magnetic induction intensity of the Hall sensor module 4 and determines which screening parameter set in S1 matches the value. Then, based on the judgment result, it finds the corresponding discharge port servo module 5, which is called the target servo. S6, the main control module 15 controls the stepper motor 6 to rotate the rotary disk 1, so that the magnet 13 measured in S4 is rotated above the discharge port 11 blocked by the target servo motor. S7, the main control module 15 controls the target servo motor to rotate, so that the target servo motor no longer blocks the discharge port 11; S4, the measured magnet 13 falls into the discharge port 11 from the magnet hole 8.

[0013] The beneficial technical effects of this invention are as follows: (1) To achieve automatic feeding and discharging of AlNiCo magnets with a bottom diameter of 4.8mm and a height of 4.8mm; (2) To achieve rapid and accurate surface magnetic field measurement; (3) The filter range and corresponding table magnetic parameters can be set; (4) The entire screening process is automated. Attached Figure Description

[0014] Figure 1 This is an exploded view of an embodiment; Figure 2 This is a bottom view of an embodiment; Figure 3 This is a flowchart of an embodiment; Figure 4 This is the human-computer interaction interface of the embodiment; Figure 5 This is the parameter setting interface of the embodiment.

[0015] In the diagram, the correspondence between the component names and the attached drawing numbers is as follows: 1. Rotary disk; 2. Tray; 3. Discharge port accessory; 4. Hall sensor module; 5. Discharge port servo module; 6. Stepper motor; 7. Motor mounting hole; 8. Magnet hole; 9. Rotary disk mounting slot; 10. Motor shaft hole; 11. Discharge port; 12. Discharge port; 13. Magnet; 14. Hinge; 15. Main control module. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] The structure of the embodiment is as follows Figure 1 , 2 As shown. The magnets to be screened in this embodiment are AlNiCo magnets with a diameter of 4.8 mm and a height of 4.8 mm. The difficulty lies in the fact that these magnets tend to stick together under the influence of magnetic force, making conventional screening devices unsuitable. To separate the magnets, this embodiment designs a very ingenious structure: the magnets that are stuck together are placed vertically, and then a horizontally rotating disk is used to separate the magnets one by one from the horizontal direction.

[0018] The main structure of the embodiment includes a rotary disk 1, a tray 2, a discharge port accessory 3, a Hall sensor module 4, a discharge port servo module 5, a stepper motor 6, and a main control module 15.

[0019] The rotating disk 1 is a circular thin plate structure with a through hole at its center for mounting the stepper motor 6, referred to as the motor mounting hole 7. The edges of the rotating disk 1 have through holes for placing magnets 13, referred to as magnet holes 8. There are eight magnet holes 8, and the central axis of each magnet hole 8 is parallel to the central axis of the motor mounting hole 7 and perpendicular to the surface of the rotating disk 1. The rotating disk 1 is made of aluminum alloy, which prevents the magnets from being attracted to the rotating disk 1.

[0020] The tray 2 has a circular groove for mounting the rotating disk 1, called the rotating disk mounting groove 9. A through hole, called the motor shaft hole 10, is located at the center of the rotating disk mounting groove 9 to allow the output shaft of the stepper motor 6 to pass through. Four through holes, called discharge ports 11, are located at the non-center positions of the rotating disk mounting groove 9. The radius of the magnet hole 8 is equal to the radius of the discharge port 11, and the central axis of the discharge port 11 is parallel to the central axis of the motor shaft hole 10. The rotating disk 1 is positioned in the rotating disk mounting groove 9, and the central axis of the motor mounting hole 7 coincides with the central axis of the motor shaft hole 10. The tray 2 is made of aluminum alloy, which prevents the magnet from being attracted to the tray 2.

[0021] A plane perpendicular to the central axis of the motor shaft hole 10 is called the projection plane; the projection of the magnet hole 8 onto the projection plane is called the magnet hole projection; the projection of the discharge port 11 onto the projection plane is called the discharge port projection. During the rotation of the rotating disk 1 around the central axis of the motor mounting hole 7, an angle can be found such that the magnet hole projection is completely obscured by the discharge port projection. If one magnet hole projection is obscured by the discharge port projection, then all other magnet hole projections are obscured by the discharge port projection. This is to ensure that the magnet 13 inside the magnet hole 8 can fall into the discharge port 11.

[0022] The body of the stepper motor 6 is fixedly connected to the tray 2, and the output shaft of the stepper motor 6 passes through the motor shaft hole 10 of the tray 2 and is fixedly connected to the motor mounting hole 7 of the rotating disk 1. The central axes of both the motor mounting hole 7 and the motor shaft hole 10 are perpendicular to the horizontal plane.

[0023] The feeding port accessory 3 has a through hole for placing the magnet 13, called the feeding port 12. The magnet 13 to be screened is placed in the feeding port 12. The radius of the magnet hole 8 is equal to the radius of the feeding port 12. The feeding port accessory 3 is fixedly connected to the tray 2, and the feeding port 12 is located above the magnet hole 8.

[0024] The central axis of the feed port 12 is perpendicular to the horizontal plane, and the rotation direction of the rotating disk 1 is perpendicular to the central axis of the feed port 12. This design facilitates the separation of the magnets 13. After the magnets 13 are placed into the feed port 12, they are magnetically attracted to each other, forming a long string, which can be called a magnetic strip. If the magnets 13 are separated one by one along the length of the magnetic strip, the actuator is very difficult to implement, and the reliability of the action is poor. If the magnets 13 are separated one by one along a direction perpendicular to the length of the magnetic strip, then this function is equivalent to a cutting action, and the implementation of the actuator is much easier.

[0025] The discharge port servo module 5 includes a hinge 14. The hinge 14 is a circular thin-plate structure, and its cross-sectional shape is a closed figure composed of an arc and a straight line, with the center of the arc located inside this closed figure. The discharge port servo module 5 drives the hinge 14 to move in a circular motion around the central axis of this arc. There are four discharge port servo modules 5, the same number as the discharge ports 11. The discharge port servo modules 5 are fixedly connected to the tray 2, and the hinge 14 is located inside the discharge port 11. The projection of the hinge 13 onto the projection plane is called the hinge projection. When the projection of the magnet hole is completely blocked by the discharge port projection, the hinge 14 rotates under the control of the discharge port servo module 5. Two angles can be found where one angle completely blocks the magnet hole projection, and the other angle does not completely block the magnet hole projection. By controlling the rotation of the hinge 14, it is possible to select which discharge port 11 the magnet 13 will fall into.

[0026] When the output shaft of the stepper motor 6 rotates, the rotating disk 1 moves in a circular motion relative to the tray 2, and the magnet 13 inside the magnet hole 8 moves with the rotating disk 1. When the rotating disk 1 rotates to the position where the central axis of the discharge port coincides with the central axis of the magnet hole 8, the magnet 13 inside the discharge port falls into the magnet hole 8 from the discharge port; when the rotating disk 1 rotates to the position where the projection of the magnet hole is completely blocked by the projection of the discharge port, if the projection of the hinge does not completely block the projection of the magnet hole, the magnet 13 inside the magnet hole 8 falls into the discharge port 11 from the magnet hole 8.

[0027] The Hall sensor module 4 is fixedly connected to the tray 2. When the magnet 13 inside the magnet hole 8 passes through the detection area of ​​the Hall sensor module 4, the Hall sensor module 4 measures the magnetic induction intensity of the magnet 13.

[0028] The main control module 15 is connected to the Hall sensor module 4, the discharge port servo module 5, and the stepper motor 6. It reads the magnetic induction intensity of the Hall sensor module 4 and controls the rotation angle of the discharge port servo module 5 and the stepper motor 6.

[0029] The workflow of the embodiment is as follows Figure 3 As shown: S1, the human-machine interface of the main control module 15 is as follows: Figure 4 As shown; set the filtering parameters on the human-computer interaction interface, such as... Figure 5 As shown; the screening parameters refer to the correspondence between the magnetic induction intensity of the discharge port servo module 5 and the Hall sensor module 4. If the magnetic induction intensity of the Hall sensor module 4 is within a specific range, the corresponding discharge port servo module 5 will be rotated so that the magnet 13 falls into the discharge port 11 blocked by the discharge port servo module 5; the number of screening parameters is equal to the number of discharge port servo modules 5. S2. Place the magnet 13 to be screened into the feed port 12; S3. The main control module 15 controls the stepper motor 6 to rotate, and the rotating disk 1 rotates under the drive of the stepper motor 6. When the central axis of the magnet hole 8 of the rotating disk 1 coincides with the central axis of the feeding port 12, the magnet 13 inside the feeding port 12 falls into the magnet hole 8. S4. When the magnet hole 8 rotates to the detection area of ​​the Hall sensor module 4, the Hall sensor module 4 measures the magnetic induction intensity of the magnet 13. S5. The main control module 15 reads the magnetic induction intensity of the Hall sensor module 4 and determines which screening parameter set in S1 matches the value. Then, based on the judgment result, it finds the corresponding discharge port servo module 5, which is called the target servo. S6, the main control module 15 controls the stepper motor 6 to rotate the rotary disk 1, so that the magnet 13 measured in S4 is rotated above the discharge port 11 blocked by the target servo motor. S7, the main control module 15 controls the target servo motor to rotate, so that the target servo motor no longer blocks the discharge port 11; S4, the measured magnet 13 falls into the discharge port 11 from the magnet hole 8.

[0030] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. Therefore, the present invention is not limited to the specific details without departing from the general concept defined by the claims and their equivalents.

Claims

1. A magnetic steel screening device, characterized in that: Includes a rotary disk (1), a tray (2), a discharge port accessory (3), a Hall sensor module (4), a discharge port servo module (5), and a stepper motor (6). The rotating disk (1) is a circular thin plate structure with a through hole at the center, called the motor mounting hole (7); the rotating disk (1) has through holes at the non-center position, called magnet holes (8); the number of magnet holes (8) is greater than 1, and the central axis of the magnet holes (8) is parallel to the central axis of the motor mounting hole (7); The tray (2) is provided with a circular groove, called the rotating disk mounting groove (9); a through hole is provided at the center of the rotating disk mounting groove (9), called the motor shaft hole (10); a through hole is provided at the non-center position of the rotating disk mounting groove (9), called the discharge port (11); the central axis of the discharge port (11) is parallel to the central axis of the motor shaft hole (10); the rotating disk (1) is set in the rotating disk mounting groove (9), and the central axis of the motor mounting hole (7) coincides with the central axis of the motor shaft hole (10); A plane perpendicular to the central axis of the motor shaft hole (10) is called the projection plane; the projection of the magnet hole (8) on the projection plane is called the magnet hole projection; the projection of the discharge port (11) on the projection plane is called the discharge port projection; during the rotation of the rotating disk (1) around the central axis of the motor mounting hole (7), an angle can be found such that the magnet hole projection is completely blocked by the discharge port projection. The body of the stepper motor (6) is fixedly connected to the tray (2), and the output shaft of the stepper motor (6) passes through the motor shaft hole (10) of the tray (2) and is fixedly connected to the motor mounting hole (7) of the rotating disk (1). The central axes of the motor mounting hole (7) and the motor shaft hole (10) are both perpendicular to the horizontal plane; The feeding port accessory (3) is provided with a through hole, called the feeding port (12), and the magnet (13) to be screened is placed in the feeding port (12); the feeding port accessory (3) is fixedly connected to the tray (2), and the feeding port (12) is located above the magnet hole (8); the central axis of the feeding port (12) is parallel to the central axis of the motor mounting hole (7); The discharge port servo module (5) includes a hinge (14); the discharge port servo module (5) is fixedly connected to the tray (2), and the hinge (14) is located inside the discharge port (11); the projection of the hinge (13) on the projection surface is called the hinge projection; when the magnetic hole projection is completely blocked by the discharge port projection, the hinge (14) rotates under the control of the discharge port servo module (5), and two angles can be found, one angle so that the hinge projection completely blocks the magnetic hole projection, and the other angle so that the hinge projection does not block the magnetic hole projection at all; When the output shaft of the stepper motor (6) rotates, the rotating disk (1) moves in a circular motion relative to the tray (2), and the magnet (13) inside the magnet hole (8) moves with the rotating disk (1). When the rotating disk (1) rotates to the position where the central axis of the discharge port coincides with the central axis of the magnet hole (8), the magnet (13) inside the discharge port falls into the magnet hole (8) from the discharge port. When the rotating disk (1) rotates to the position where the projection of the magnet hole is completely blocked by the projection of the discharge port, if the projection of the hinge does not completely block the projection of the magnet hole, the magnet (13) inside the magnet hole (8) falls into the discharge port (11) from the magnet hole (8). The Hall sensor module (4) is fixedly connected to the tray (2). When the magnet (13) inside the magnet hole (8) passes through the detection area of ​​the Hall sensor module (4), the Hall sensor module (4) measures the magnetic induction intensity of the magnet (13).

2. The magnetic steel screening device according to claim 1, characterized in that, The number of the discharge port servo module (5) and the discharge port (11) are both 4.

3. The magnetic steel screening device according to claim 1, characterized in that, The number of magnetic holes (8) is 8.

4. The magnetic steel screening device according to claim 1, characterized in that, The radius of the magnetic hole (8) is equal to the radius of the feed port (12).

5. The magnetic steel screening device according to claim 1, characterized in that: The hinge (14) is a circular thin plate structure. The cross-sectional shape is a closed figure composed of an arc and a straight line, and the center of the arc is located inside the closed figure. The discharge port servo module (5) drives the hinge (14) to make circular motion around the central axis of the arc.

6. The magnetic steel screening device according to claim 2, characterized in that: If the projection of one magnet hole is blocked by the projection of the discharge port, then the projections of the remaining magnet holes will be blocked by the projection of the discharge port.

7. A magnetic steel screening device according to claim 2, characterized in that: The magnetic steel screening device includes a main control module (15); the main control module (15) is connected to the Hall sensor module (4), the discharge port servo module (5), and the stepper motor (6), reads the magnetic induction intensity of the Hall sensor module (4), and controls the rotation angle of the discharge port servo module (5) and the stepper motor (6).

8. A magnetic steel screening device according to claim 2, characterized in that, The rotating disk (1) and the tray (2) are made of aluminum alloy.

9. A magnetic steel screening device according to claim 7, characterized in that, The workflow is as follows: S1. Set the screening parameters on the main control module (15); the screening parameters refer to the correspondence between the magnetic induction intensity of the discharge port servo module (5) and the Hall sensor module (4). If the magnetic induction intensity of the Hall sensor module (4) is within a specific range, rotate the corresponding discharge port servo module (5) so that the magnet (13) falls into the discharge port (11) blocked by the discharge port servo module (5); the number of screening parameters is equal to the number of discharge port servo modules (5); S2. Place the magnet (13) to be screened into the feed port (12); S3. The main control module (15) controls the stepper motor (6) to rotate, and the rotating disk (1) rotates under the drive of the stepper motor (6); when the central axis of the magnet hole (8) of the rotating disk (1) coincides with the central axis of the feed port (12), the magnet (13) inside the feed port (12) falls into the magnet hole (8). S4. When the magnet hole (8) rotates to the detection area of ​​the Hall sensor module (4), the Hall sensor module (4) measures the magnetic induction intensity of the magnet (13). S5, the main control module (15) reads the magnetic induction intensity of the Hall sensor module (4) and determines which screening parameter set in S1 matches the value. Then, based on the judgment result, it finds the corresponding outlet servo module (5), which is called the target servo. S6, the main control module (15) controls the stepper motor (6) to rotate the rotating disk (1), so that the magnet (13) measured by S4 is rotated above the discharge port (11) blocked by the target servo motor; S7. The main control module (15) controls the target servo motor to rotate so that the target servo motor no longer blocks the discharge port (11); S4. The magnet (13) measured falls into the discharge port (11) from the magnet hole (8).

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