Automatic conveying device for neodymium-iron-boron magnet production material pile

Abstract

This invention discloses an automated conveying device for NdFeB magnet production stacks, comprising a horizontally placed conveyor frame. Equally spaced conveyor rollers are rotatably mounted on the inner side of the upper end of the conveyor frame. A support plate is located on the left side of the conveyor frame. The magnet stacks to be stacked are conveyed from right to left via the conveyor rollers. A gripping mechanism on the upper left side of the conveyor frame grips the magnet stacks onto the upper surface of a tray above the support plate. A limiting block for positioning the tray is fixedly installed on the upper surface of the support plate. Symmetrically distributed tidying push plates are located on the left side of the conveyor frame, with protective pads fixedly installed on their inner surfaces. This automated conveying device for NdFeB magnet production stacks employs a novel structural design. After one layer is stacked, a third cylinder retracts, thereby driving the tidying push plates on both sides to move synchronously towards the center position via a connecting plate. The extrusion force tidies up the stacked magnet stacks, ensuring their stability after stacking.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron magnet production technology, specifically to an automated conveying device for neodymium iron boron magnet production material stacks. Background Technology

[0002] Neodymium iron boron magnets are an alloy composed of neodymium, iron and boron. They can generate strong attraction in a very small volume and are an indispensable core material in modern industry. In the production process, the unmagnetized raw materials need to be transported by a conveyor after firing or other processes and finally stacked neatly to facilitate subsequent handling and magnetization operations.

[0003] As in the prior art, Chinese Patent Application No. 202411862922.3 discloses a conveying device, method, and automated equipment for a stack of unloaded magnetic blocks. The conveying device includes an unloading conveying assembly and a destacking assembly. The unloading conveying assembly is used to convey box trays. The destacking assembly includes a translation slide, a translation drive motor, a box-picking gripper, a gripper lifting motor, a gripper lifting slide, an alignment drive motor, and an alignment slide. The box-picking gripper is mounted on the gripper lifting slide. The gripper lifting slide is set on the alignment slide and controlled by the gripper lifting motor. The alignment slide is set on the translation slide and controlled by the alignment drive motor. The translation slide is controlled by the translation drive motor.

[0004] For example, in the prior art, Chinese Patent Application No. 200910077386.5 discloses a paper tube transfer conveyor line and a paper bag manufacturing system, including a lower conveyor device, an upper conveyor device, a lifting and transfer device, and a paper tube feeding device. The feeding end of the lower conveyor device is used to connect with the discharge end of the tube making machine. The upper conveyor device is located above the lower conveyor device. In a top view, the upper conveyor device and the lower conveyor device have the same conveying trajectory and are set in opposite directions. The lifting and transfer device is used to lift the paper tube stacks conveyed by the lower conveyor device to the upper conveyor device. The paper tube feeding device is used to stack the paper tube stacks conveyed by the upper conveyor device at the feeding end of the bottom gluing machine.

[0005] For example, in the prior art, Chinese Patent Application No. 202411228149.5 discloses a control method for a neodymium iron boron magnet discharge and conveying device. The control module sets the size of each neodymium iron boron magnet. The control module calculates the discharge quantity and method based on the size of the discharge base plate and the size of each neodymium iron boron magnet. When the trolley sensor on the discharge seat senses the discharge base plate trolley, it sends a signal to the control module. The control module controls the trolley fixing module to fix the discharge base plate trolley. The camera on the discharge seat takes pictures of the discharge base plate and sends them to the control module. The control module compares the pictures to see if there are particles. If there are, it controls the air blowing port to blow air to clean them. If not, the control module controls the automatic feeding device to work.

[0006] Based on the above information, it can be seen that existing material stacking devices generally use robotic arms to pick up the material stacks and then stack them neatly. However, in actual use, due to factors such as errors during long-term use of the robotic arms, some misalignment may occur during stacking, resulting in uneven stacking and affecting overall stability. Summary of the Invention

[0007] The purpose of this invention is to provide an automated conveying device for neodymium iron boron magnet production stacks, so as to solve the problem of uneven stacking affecting overall stability mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automated conveying device for NdFeB magnet production stacks, comprising a horizontally placed conveying frame, conveying rollers rotatably mounted on the inner side of the upper end of the conveying frame at equal intervals, a bearing plate on the left side of the conveying frame, the magnet stacks to be stacked being conveyed from right to left by the conveying rollers, a gripping mechanism on the upper left side of the conveying frame gripping the magnet stacks onto the upper surface of a tray above the bearing plate, a limiting block for positioning the tray being fixedly installed on the upper surface of the bearing plate, symmetrically distributed sorting push plates on the left side of the conveying frame, a protective pad being fixedly installed on the inner surface of the sorting push plates, a partition plate being placed between the upper and lower layers of magnet stacks, movable top blocks arranged in a matrix on the upper surface of the partition plate, the movable top blocks and the partition plate forming an up-and-down sliding structure, an air supply mechanism being provided between the sorting push plates and the partition plate, using air pressure to lift the movable top blocks, a pressurized air pump blowing air into the connecting groove through a connecting pipe, the increased air pressure inside the connecting groove lifting the movable top blocks upwards.

[0009] Preferably, the gripping mechanism includes a mounting frame located above the conveyor frame, and a gripping robotic arm for picking up magnetic material stacks is provided below the mounting frame. The gripping robotic arm picks up the magnetic material stacks above the conveyor frame.

[0010] Preferably, a first cylinder for driving its up and down movement is fixedly installed on the lower surface of the mounting frame, and the lower end of the first cylinder is slidably connected to an electric slide rail fixedly installed on the side of the conveyor frame through a connecting block.

[0011] Preferably, a connecting slider is fixedly installed on the side of the bearing plate, and the connecting slider and the lifting screw are connected by a through thread.

[0012] Preferably, the air supply mechanism includes a pressurized air pump fixedly installed on the outer surface of the sorting push plate, and a bent connecting pipe is fixedly installed at the air outlet end of the pressurized air pump.

[0013] Preferably, the partition plate has interconnected grooves inside, and the movable top block and the interconnecting grooves form a sealed up-and-down sliding structure.

[0014] Preferably, the connecting pipe is inserted into the communicating groove for connection, and a sealing ring is fixedly installed on the outside of the connecting pipe.

[0015] Preferably, the upper surface of the movable top block has a smooth structure, and the upper surface of the movable top block is polished into a smooth structure with a low coefficient of friction using a polishing process, thereby reducing the friction between the magnetic material stack and the movable top block. Furthermore, a reset spring is fixedly installed between the lower surface of the movable top block and the inner wall of the connecting groove, and a rough rubber anti-slip pad is provided on the upper surface of the partition plate.

[0016] Preferably, a positioning camera is fixedly installed on the inner surface of the sorting push plate. The positioning camera uses visual means to locate the docking position of the connecting pipe and the connecting groove. The sorting push plate is connected to the connecting plate through the second cylinder. The connecting plate is connected to the third cylinder fixedly installed on the outer surface of the left side of the conveyor frame. The retraction of the third cylinder drives the sorting push plates on both sides to move synchronously to the middle position through the connecting plate. The extrusion force is used to sort the magnetic material stack neatly. The position of the connecting groove is determined by taking a side image of the partition plate with the positioning camera. Then, the extension and retraction of the second cylinder are controlled accordingly to adjust the position of the sorting push plate.

[0017] Preferably, the movable top block has a through-hole ventilation hole inside, with the upper end of the ventilation hole inclined. Some air is discharged through the ventilation hole inside the movable top block, and the airflow discharged through the ventilation hole blows and cleans the dust on the surface of the magnet stack to a certain extent.

[0018] Preferably, the exhaust hole is configured as a vertical structure, and the upper end of the exhaust hole corresponds to the ball bearing embedded inside the movable top block.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the automated conveying device for neodymium iron boron magnet production stacks adopts a novel structural design, the specific details of which are as follows: 1. The mechanical arm grabs the magnetic material stack above the conveyor frame, and then the electric slider drives the mounting frame to move and place the magnetic material stack on the pallet to achieve the purpose of stacking. After one layer is stacked, the third cylinder retracts, thereby driving the front and rear sorting push plates to move synchronously to the middle position through the connecting plate. The extrusion force is used to sort the stacked magnetic material stack neatly and ensure the stability of the stack.

[0020] 2. When sorting, turn on the pressurized air pump. At this time, the pressurized air pump blows air into the connecting groove through the connecting pipe. The increased air pressure inside the connecting groove pushes the movable top block upward, thereby using the movable top block to lift the magnetic material stack and create a certain suspension effect. Since the upper surface of the movable top block is polished into a smooth structure with a low coefficient of friction, the friction between the magnetic material stack and the movable top block is reduced, and the sorting push plate can more easily push the magnetic material stack to achieve a better sorting effect. Furthermore, a positioning camera is fixedly installed on the inner side of the sorting push plate. The positioning camera is used to capture images of the side of the partition plate to determine the position of the connecting groove. Then, the second cylinder is controlled to extend and retract, adjusting the position of the sorting push plate so that the connecting pipe can be accurately inserted into the connecting groove to form a connection.

[0021] 3. When the pressurized air pump supplies air into the connecting groove, some air is discharged through the exhaust hole opened inside the movable top block. The airflow discharged through the exhaust hole blows and cleans the dust on the surface of the magnet stack to a certain extent. The air supply speed of the pressurized air pump is much greater than the exhaust speed of the exhaust hole, so the pressure inside the connecting groove can be increased, and the movable top block can be lifted smoothly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lifting screw transmission structure of the present invention; Figure 3 This is a schematic diagram of the upper surface structure of the bearing plate of the present invention; Figure 4 This is a schematic diagram of the gripping robotic arm structure of the present invention; Figure 5 This is a schematic diagram of the inner structure of the push plate in this invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the partition plate structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the partition plate of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the internal structure of the movable top block of the present invention; Figure 11 This is a schematic diagram of the internal structure of the movable top block in Embodiment 4 of the present invention.

[0023] In the diagram: 1. Conveyor frame; 2. Conveyor roller; 3. Bearing plate; 4. Pallet; 5. Limiting block; 6. Magnetic stack; 7. Mounting frame; 8. Grabbing robotic arm; 9. First cylinder; 10. Connecting block; 11. Electric slide rail; 12. Connecting slider; 13. Lifting screw; 14. Sorting push plate; 15. Protective pad; 16. Connecting plate; 17. Second cylinder; 18. Third cylinder; 19. Positioning camera; 20. Divider plate; 21. Movable top block; 2101. Vent hole; 22. Connecting groove; 23. Return spring; 24. Pressurized air pump; 25. Connecting pipe; 26. Sealing ring; 27. Anti-slip pad; 28. Ball bearing. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-5 To achieve the purpose of sorting after stacking, this embodiment provides the following technical solution, specifically disclosing: a horizontally placed conveyor frame 1, with conveyor rollers 2 rotatably mounted at equal intervals on the inner side of the upper end of the conveyor frame 1, a bearing plate 3 on the left side of the conveyor frame 1, the magnetic material stacks 6 to be stacked being conveyed from right to left by the conveyor rollers 2, a gripping mechanism on the upper left side of the conveyor frame 1 gripping the magnetic material stacks 6 onto the upper surface of the tray 4 above the bearing plate 3, a limiting block 5 for positioning the tray 4 being fixedly installed on the upper surface of the bearing plate 3, and symmetrically distributed sorting push plates 14 on the left side of the conveyor frame 1, with protective pads 15 fixedly installed on the inner surface of the sorting push plates 14, and two layers of magnets... A partition plate 20 is placed between the material stacks 6. The gripping mechanism includes a mounting frame 7 located above the conveyor frame 1. A gripping robotic arm 8 for picking up the magnetic material stacks 6 is set below the mounting frame 7. A first cylinder 9 for driving it to move up and down is fixedly installed on the lower surface of the mounting frame 7. The lower end of the first cylinder 9 is slidably connected to an electric slide rail 11 fixedly installed on the side of the conveyor frame 1 via a connecting block 10. A connecting slider 12 is fixedly installed on the side of the bearing plate 3, and the connecting slider 12 is threadedly connected to the lifting screw 13. The sorting push plate 14 is connected to the connecting plate 16 via a second cylinder 17. The connecting plate 16 is connected to a third cylinder 18 fixedly installed on the outer left side of the conveyor frame 1.

[0026] When using the device, firstly, the manual or robotic arm places the stacks of magnets 6 in boxes onto the upper right side of the conveyor frame 1. Then, the motor inside the conveyor frame 1 drives the conveyor roller 2 to rotate, conveying the magnet stacks 6 from right to left. When the magnet stacks 6 are conveyed to the far left, the gripping robotic arm 8 clamps and grasps them. The gripping robotic arm 8 can rotate on its own or slide on the mounting frame 7 using a slide rail. Then, the electric slide rail 11 drives the mounting frame 7 to move to the left, finally placing the magnet stacks 6 on top of the tray 4. The tray 4 is placed on top of the support plate 3 using the limiting block 5, completing the stacking operation. After one layer of magnet stacks 6 is stacked, the left side of the conveyor frame 1 is opened. The external third cylinder 18 retracts and drives the sorting push plate 14 to move towards the center position through the connecting plate 16, thereby pushing the stacked magnetic material stack 6 towards the center to achieve the sorting purpose. After sorting, the third cylinder 18 reverses its operation to reset the sorting push plate 14. Then, the motor below the conveyor frame 1 drives the lifting screw 13 to rotate, thereby driving the bearing plate 3 to move downward through the connecting slider 12 that is threaded through it. The lifting screw 13 is regularly manually maintained to avoid dirt adhering to its surface and affecting the transmission. When the bearing plate 3 moves to the specified height (generally, it moves downward by the height of one magnetic material stack 6), the worker places the partition plate 20 on top of the stacked magnetic material stack 6.

[0027] Example 2: Please refer to Figures 6-9 To achieve smoother sorting, this embodiment provides the following technical solution, specifically: Movable top blocks 21 arranged in a matrix are provided on the upper surface of the partition plate 20. The movable top blocks 21 and the partition plate 20 form an up-and-down sliding structure. An air supply mechanism is provided between the sorting push plate 14 and the partition plate 20, using air pressure to lift the movable top blocks 21. The air supply mechanism includes a pressurized air pump 24 fixedly installed on the outer surface of the sorting push plate 14. A bent connecting pipe 25 is fixedly installed at the air outlet of the pressurized air pump 24. Interconnected communication grooves 2 are provided inside the partition plate 20. 2. The movable top block 21 and the connecting groove 22 form a sealed up-and-down sliding structure. The connecting pipe 25 is inserted into the connecting groove 22 for docking and connection. A sealing ring 26 is fixedly installed on the outside of the connecting pipe 25. The upper surface of the movable top block 21 is a smooth structure. A return spring 23 is fixedly installed between the lower surface of the movable top block 21 and the inner wall of the connecting groove 22. The upper surface of the partition plate 20 is provided with a rough rubber anti-slip pad 27. A positioning camera 19 is fixedly installed on the inner surface of the tidying push plate 14. The positioning camera 19 uses vision to locate the docking position of the connecting pipe 25 and the connecting groove 22.

[0028] Before using the sorting pusher 14 for sorting, the positioning camera 19 on the inner surface of the sorting pusher 14 is activated. The positioning camera 19 is used to locate the connecting groove 22 on the side of the next layer partition plate 20. Specifically, the positioning camera 19 uses binocular vision, simulating the human eye by using two cameras to photograph the connecting groove 22 from different angles. By calculating the parallax, high-precision three-dimensional coordinates and depth information of the connecting groove 22 are obtained, thereby determining the position of the connecting groove 22. Then, the position information is fed back to the controller. The controller activates the second cylinder 17 based on the position information, and uses the second cylinder 17 to adjust the position of the sorting pusher 14 so that the connecting pipe 25 below the pressurized air pump 24 is aligned with the connecting groove 22. When the sorting pusher 14 moves to the middle position, the connecting pipe 25 is inserted into the connecting groove 22 first. At this time, the pressurized air pump 24 is activated to connect the connecting pipe 25. Air is supplied into the connecting groove 22 through pipe 25. The increased pressure inside the connecting groove 22 lifts the movable top block 21 upwards, which in turn lifts the magnetic material stack 6 above, creating a certain degree of suspension. Since the upper surface of the movable top block 21 is polished to a smooth structure with a low coefficient of friction, it is easier for the sorting push plate 14 to push and sort the magnetic material stack 6 after it is lifted. During the sorting process, the connecting pipe 25 continues to move into the connecting groove 22 to ensure that the sorting push plate 14 can move. After the sorting is completed, the third cylinder 18 drives the sorting push plate 14 to reset. At this time, the connecting pipe 25 moves out of the connecting groove 22, and the pressure inside the connecting groove 22 decreases. The movable top block 21 moves downwards under the action of gravity above and the elasticity of the reset spring 23. At this time, the magnetic material stack 6 above falls and contacts the anti-slip pad 27, increasing the friction and preventing displacement.

[0029] Example 3: Please refer to Figure 10 In order to assist in cleaning the material stack, this embodiment provides the following technical solution, which specifically discloses that: the movable top block 21 has an exhaust hole 2101 that runs vertically through it, and the upper end of the exhaust hole 2101 is inclined.

[0030] When the movable top block 21 lifts the magnetic material stack 6 above, a small portion of the air inside the connecting groove 22 is ejected obliquely from the side of the movable top block 21 through the exhaust port 2101. The ejected airflow cleans the dust on the surface of the magnetic material stack 6. The exhaust speed of the exhaust port 2101 is much less than the air supply speed of the connecting pipe 25 into the connecting groove 22, thus ensuring that the connecting groove 22 can reach the specified pressure.

[0031] Example 4: Please refer to Figure 11 In order to cope with the use of the heavy magnetic stack 6, this embodiment provides the following technical solution, which specifically discloses that: the exhaust hole 2101 is set as a vertical structure, and the upper end of the exhaust hole 2101 corresponds to the ball bearing 28 embedded inside the movable top block 21.

[0032] When stacking the magnetic material stack 6, the overall process is the same as in Embodiment 1 and Embodiment 2. After one layer is stacked, when the worker places the partition plate 20 on top of the magnetic material stack 6, the partition plate 20 with the ball bearings 28 is selected. After the movable top block 21 is lifted upward, the ball bearings 28 are used to change the sliding friction into rolling friction, reducing the friction force, which is more suitable for the heavier magnetic material stack 6. After that, when the connecting pipe 25 supplies air into the connecting groove 22, after the connecting groove 22 reaches the specified pressure, the excess air enters the exhaust hole 2101. At this time, the exhaust hole 2101 corresponds to the position of the ball bearings 28. The air pressure is used to slightly lift the ball bearings 28 upward. The lifted ball bearings 28 reduce the wear between the movable top block 21 and extend the service life of the ball bearings 28.

[0033] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated conveying device for neodymium iron boron magnet production stacks, comprising a horizontally placed conveyor frame (1), wherein conveyor rollers (2) are rotatably mounted on the inner side of the upper end of the conveyor frame (1) at equal intervals, characterized in that, Also includes: The conveyor frame (1) is provided with a bearing plate (3) on the left side. The magnetic material stack (6) that needs to be stacked is conveyed from right to left by the conveyor roller (2). The gripping mechanism on the upper left side of the conveyor frame (1) grips the magnetic material stack (6) onto the upper surface of the tray (4) above the bearing plate (3). A limiting block (5) for positioning the tray (4) is fixedly installed on the upper surface of the bearing plate (3). The conveyor frame (1) is provided with a sorting push plate (14) symmetrically distributed on the left side. A protective pad (15) is fixedly installed on the inner surface of the sorting push plate (14). A partition plate (20) is placed between the upper and lower magnetic material stacks (6). Movable top blocks (21) are arranged in a matrix on the upper surface of the partition plate (20). The movable top blocks (21) and the partition plate (20) form an up-and-down sliding structure. An air supply mechanism is provided between the sorting push plate (14) and the partition plate (20) to lift the movable top blocks (21) using air pressure.

2. The automated conveying device for neodymium iron boron magnet production stacks according to claim 1, characterized in that: The gripping mechanism includes a mounting frame (7) located above the conveyor frame (1), and a gripping robotic arm (8) for picking up the magnetic stack (6) is provided below the mounting frame (7).

3. The automated conveying device for neodymium iron boron magnet production stacks according to claim 2, characterized in that: The mounting bracket (7) has a first cylinder (9) fixedly mounted on its lower surface for driving it to move up and down. The lower end of the first cylinder (9) is slidably connected to an electric slide rail (11) fixedly mounted on the side of the conveyor frame (1) via a connecting block (10).

4. The automated conveying device for neodymium iron boron magnet production stacks according to claim 1, characterized in that: The side of the bearing plate (3) is fixedly installed with a connecting slider (12), and the connecting slider (12) and the lifting screw (13) are connected by a through thread.

5. The automated conveying device for neodymium iron boron magnet production stacks according to claim 1, characterized in that: The air supply mechanism includes a pressurized air pump (24) fixedly installed on the outer surface of the sorting push plate (14), and a bent connecting pipe (25) is fixedly installed at the air outlet of the pressurized air pump (24).

6. The automated conveying device for neodymium iron boron magnet production stacks according to claim 5, characterized in that: The partition plate (20) has a communicating groove (22) inside, and the movable top block (21) and the communicating groove (22) form a sealed up-and-down sliding structure. The movable top block (21) has an exhaust hole (2101) inside.

7. An automated conveying device for neodymium iron boron magnet production stacks according to claim 6, characterized in that: The connecting pipe (25) is inserted into the connecting groove (22) for connection, and a sealing ring (26) is fixedly installed on the outside of the connecting pipe (25). The upper surface of the movable top block (21) is a smooth structure, and a return spring (23) is fixedly installed between the lower surface of the movable top block (21) and the inner wall of the connecting groove (22). The upper surface of the partition plate (20) is provided with a rough rubber anti-slip pad (27).

8. The automated conveying device for neodymium iron boron magnet production stacks according to claim 7, characterized in that: A positioning camera (19) is fixedly installed on the inner surface of the sorting push plate (14). The positioning camera (19) uses visual means to locate the docking position of the connecting pipe (25) and the connecting groove (22). The sorting push plate (14) is connected to the connecting plate (16) through the second cylinder (17). The connecting plate (16) is connected to the third cylinder (18) fixedly installed on the outer left side of the conveyor frame (1).

9. An automated conveying device for neodymium iron boron magnet production material stacks according to claim 6, characterized in that: The upper end of the exhaust vent (2101) is inclined.

10. An automated conveying device for neodymium iron boron magnet production stacks according to claim 6, characterized in that: The exhaust hole (2101) is configured as a vertical structure, and the upper end of the exhaust hole (2101) is correspondingly embedded in the ball bearing (28) inside the movable top block (21).

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