Magnet surface film forming system

Abstract

The utility model relates to a magnet surface film forming system. The magnet surface film forming system comprises a spraying device used for spraying treatment liquid to the surface of a magnet blank and drying the treatment liquid on the surface of the magnet blank; the feeding device is used for conveying magnet blanks to the spraying device; the discharging device can move to the position below the spraying device and receive the magnet blanks output by the spraying device. A film layer is formed on the surface of the magnet blank through the spraying device, automatic feeding and discharging are achieved through the feeding device and the discharging device, and the film forming efficiency of the magnet blank is improved.

Description

Technical Field

[0001] The present application relates to the field of magnet preparation, and in particular to a magnet surface film forming system. Background Art

[0002] Sintered NdFeB magnets, due to their excellent comprehensive magnetic properties, are widely used in electronics, electrical machinery, and communications. To improve the corrosion resistance of NdFeB magnets, a protective layer must be formed on their surface. Existing methods for forming a protective layer on the surface of NdFeB magnets require immersing the magnets in a treatment solution before solidifying them into a film, resulting in low production efficiency. Utility Model Content

[0003] Based on the above problems, the present application provides a magnet surface film forming system to facilitate rapid film formation on the magnet.

[0004] One embodiment of the present application provides a magnet surface film forming system, comprising:

[0005] A spraying device, used for spraying a treatment liquid onto the surface of the magnet blank and drying the treatment liquid on the surface of the magnet blank;

[0006] A feeding device, used for conveying the magnet blank to the spraying device;

[0007] The discharging device can be moved below the spraying device and receive the magnet blanks output by the spraying device.

[0008] According to some embodiments of the present application, the spraying device includes:

[0009] a first support frame;

[0010] Roller, including:

[0011] A drum body is provided with a cavity with an opening at one end, the drum body is rotatably mounted on the first support frame, and a side wall of the drum body is provided with a discharge port; and

[0012] A discharge plate is slidably arranged on the drum body, and the discharge plate can close the discharge port;

[0013] A mechanical arm is provided on the first supporting frame, and the mechanical arm is capable of driving the stripper plate to slide;

[0014] A driver is provided on the first support frame, and is used to drive the drum body to rotate;

[0015] a spraying mechanism, for spraying a treatment liquid into the cavity of the drum body;

[0016] The drying mechanism is used for heating the material in the cavity.

[0017] According to some embodiments of the present application, the drum body is provided with a sliding hole;

[0018] The stripping plate is slidably arranged in the sliding hole, and a limit block is arranged at the end of the stripping plate, and the mechanical arm can clamp the limit block.

[0019] According to some embodiments of the present application, the drum body includes:

[0020] straight tube;

[0021] a first tapered portion, provided at one end of the straight cylindrical portion;

[0022] a second tapered portion, disposed at the other end of the straight cylindrical portion;

[0023] an end plate, disposed at an end portion of the second tapered portion;

[0024] A rotating shaft is arranged on the end plate, the rotating shaft is rotatably connected to the first supporting frame, and the axis of the roller body is inclined relative to the horizontal plane.

[0025] According to some embodiments of the present application, the spraying mechanism includes:

[0026] A spray rack, arranged on the first supporting frame;

[0027] A spray gun is arranged on the spray rack;

[0028] a first air pump connected to the spray gun;

[0029] A flow pump is connected to the spray gun.

[0030] According to some embodiments of the present application, the drying mechanism includes:

[0031] a second air pump, disposed on the first support frame;

[0032] a heater, disposed on the first support frame, the heater being connected to the second air pump and configured to heat the gas;

[0033] A first air nozzle is arranged on the first support frame, the first air nozzle is connected to the heater, and the first air nozzle extends into the cavity of the drum body.

[0034] According to some embodiments of the present application, the side wall of the drum body is provided with a liquid outlet, and the spraying device further includes a blower mechanism, which includes:

[0035] a third air pump, disposed on the first support frame;

[0036] The second air nozzle is arranged on the first supporting frame, the second air nozzle is connected to the third air pump, and the second air nozzle is arranged toward the liquid outlet.

[0037] According to some embodiments of the present application, the loading device includes a conveyor belt, and one end of the conveyor belt can enter the spraying device.

[0038] According to some embodiments of the present application, the discharging device includes:

[0039] A second support frame, with rollers provided at the bottom;

[0040] The material box is arranged on the second supporting frame.

[0041] According to some embodiments of the present application, the discharging device further includes a sieve plate, which is disposed on the second support frame and located above the material box.

[0042] The present application forms a film layer on the surface of the magnet blank through a spraying device, and realizes automatic loading and unloading through a loading device and a discharging device, thereby improving the film forming efficiency of the magnet blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without exceeding the scope of protection required by this application.

[0044] Figure 1 Schematic diagram of a magnet surface film forming system according to an embodiment of the present application;

[0045] Figure 2 This is a schematic diagram of the spray device of the embodiment of the present application Figure 1 ;

[0046] Figure 3 This is a schematic diagram of the spray device of the embodiment of the present application Figure 2 ;

[0047] Figure 4 This is a schematic diagram of the drum body of the embodiment of the present application. Figure 1 ;

[0048] Figure 5 is a schematic diagram of a drum according to an embodiment of the present application;

[0049] Figure 6 is a schematic diagram of a stripper plate according to an embodiment of the present application;

[0050] Figure 7 This is a schematic diagram of the drum body of the embodiment of the present application. Figure 2 ;

[0051] Figure 8 This is a schematic diagram of the drum body of the embodiment of the present application. Figure 3 ;

[0052] Figure 9 is a schematic diagram of a spray mechanism according to an embodiment of the present application;

[0053] Figure 10 is a schematic diagram of a drying mechanism according to an embodiment of the present application;

[0054] Figure 11 is a schematic diagram of a hair dryer mechanism according to an embodiment of the present application;

[0055] Figure 12 It is a schematic diagram of the discharging device of the embodiment of the present application. DETAILED DESCRIPTION

[0056] The following is a clear and complete description of the technical solution of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of this application.

[0057] like Figure 1 As shown, an embodiment of the present application provides a magnet surface film forming system 100 , which includes: a spraying device 10 , a loading device 20 and a discharging device 30 .

[0058] The spraying device 10 is used to spray a treatment liquid, such as a phosphating solution or a passivating solution, onto the surface of the magnet blank. The spraying device 10 is also used to dry the treatment liquid on the surface of the magnet blank, allowing the treatment liquid to dry on the surface of the magnet blank to form a film layer on the magnet blank. The surface drying refers to the surface drying of the treatment liquid on the magnet blank. If necessary, the magnet blank after spraying can be cured to form a protective film on the surface of the magnet blank.

[0059] The feeding device 20 is used to transport the magnet blank to the spraying device 10. For example, one end of the feeding device 20 extends into the spraying device 10, and the magnet blank is transported into the spraying device 10 through the feeding device 20.

[0060] The discharging device 30 is equipped with rollers at its bottom end, allowing it to move below the spraying device 10 and receive the magnet blanks discharged by the spraying device 10. The spraying device 10 is provided with a discharge port, and the discharging device 30 moves below the discharge port to receive the magnet blanks discharged by the spraying device 10. After receiving the magnet blanks, the discharging device 30 moves out from under the spraying device 10.

[0061] In this embodiment, the magnet blank is sprayed with the treatment liquid sprayed on the magnet blank to form a protective film layer, thereby improving the film forming efficiency of the magnet blank. The spraying process can reduce the waste liquid of the treatment liquid and reduce the possibility of environmental pollution.

[0062] like Figure 2 and Figure 3 As shown, in some embodiments, the spraying device 10 includes: a first support frame 1, a drum 2, a robotic arm 3, a driver 4, a spraying mechanism 5 and a drying mechanism 6.

[0063] like Figure 4 and Figure 5 As shown, the drum 2 is rotatably mounted on the first support frame 1. Optionally, the first support frame 1 is provided with a receiving cavity with a front end opening, and the drum 2 is located in the receiving cavity. The drum 2 includes: a drum body 21 and a discharge plate 22.

[0064] The drum body 21 is rotatably mounted on the first support frame 1. The drum body 21 is provided with a cavity 211 with an open end, and a discharge port 212 is provided on the side wall of the drum body. A discharge plate 22 is capable of closing the discharge port 212. After the discharge plate 22 closes the discharge port 212, the magnet blank is fed into the drum 2 through the top opening of the cavity 211 for roller spraying. After roller spraying is completed, the discharge plate 22 is moved to open the discharge port 212, and the magnet blank falls through the discharge port 212, completing the unloading of the drum 2.

[0065] The mechanical arm 3 is arranged on the first support frame 1. The mechanical arm 3 can be an existing mechanical arm. The mechanical arm 3 can clamp the discharge plate 22 and drive the discharge plate 22 to slide to control the opening and closing of the discharge port 212.

[0066] The driver 4 is provided on the first support frame 1 and is used to drive the roller body 21 to rotate. For example, the driver 3 is a motor connected to the roller body 21 to drive the roller body 21 to rotate.

[0067] The spray mechanism 5 is mounted on the first support frame 1 and extends into the cavity 211 of the drum 2. The spray mechanism 5 is configured to spray the treatment liquid into the cavity 211. As the drum 2 rotates, the magnet blank in the cavity 211 is driven to roll. The spray mechanism 5 sprays the treatment liquid onto the surface of the magnet blank, causing the treatment liquid to adhere to the surface of the magnet blank.

[0068] The drying mechanism 6 is used to dry the material in the cavity 211. For example, the drying mechanism 6 delivers hot air to the cavity 211 to quickly dry the treatment liquid on the magnet blank.

[0069] In some embodiments, a sliding hole 213 is provided on the sidewall of the drum body 21, and the sliding hole 213 is located above the discharge port 212. The discharge plate 22 slides through the sliding hole 213 and is slidably mounted on the drum body 21. The width of the discharge port 212 is smaller than the width of the discharge plate 22 to prevent the discharge plate 22 from falling.

[0070] like Figure 6 As shown, a limit block 221 is provided on the top of the stripper plate 22. The limit block 221 is used to limit the stripper plate 22 from sliding excessively toward the bottom of the drum body 21, thereby improving the safety of the drum 2. The robotic arm 3 can clamp the limit block 221 to drive the stripper plate 22 to slide.

[0071] like Figure 7 and Figure 8 As shown, in some embodiments, the drum body 21 includes: a straight cylindrical portion 214 , a first tapered portion 215 , a second tapered portion 216 , an end plate 217 and a rotating shaft 218 .

[0072] Both the first tapered portion 215 and the second tapered portion 216 are tapered. The first tapered portion 215 is disposed at one end of the straight portion 214, with the larger end of the first tapered portion 215 connected to the straight portion 214. The second tapered portion 216 is disposed at the other end of the straight portion 214, with the larger end of the second tapered portion 216 connected to the straight portion 214.

[0073] An end plate 217 is provided at the smaller end of the second tapered portion 216 to seal the end opening of the second tapered portion 216. The straight cylindrical portion 214, the first tapered portion 215, the second tapered portion 216, and the end plate 217 collectively form a cavity 211 with one end open. The shape of the cavity 211 is substantially the same as the outer wall shape of the drum body 21. Magnet blanks can be introduced into the cavity 211 through the top opening.

[0074] The rotating shaft 218 is arranged on the end plate 217. The axes of the straight tube portion 214, the first tapered portion 215, the second tapered portion 216, the end plate 217 and the rotating shaft 218 are collinear. The rotating shaft 218 is rotatably connected to the first support frame 1. Figure 2 As shown, a bearing 11 is provided on the first support frame 1, and a rotating shaft 218 is connected to the bearing 11 so that the drum 2 can rotate relative to the first support frame 1. The axis L of the drum body 21 is tilted relative to the horizontal plane to carry more magnet blanks in the drum 2.

[0075] Optionally, the straight cylindrical portion 214 and the second conical portion 216 are both provided with a liquid outlet 219. When spraying, the spraying mechanism 5 sprays a mixture of gas and liquid, and the sprayed gas can be discharged from the drum 2 through the liquid outlet 219, thereby avoiding the formation of gas turbulence in the cavity 211, which will affect the spraying uniformity of the treatment liquid. During the spraying process, most of the excess liquid that is not attached to the surface of the magnet blank will form dry atomized powder, and the atomized powder can be discharged from the drum 2 through the liquid outlet 219, thereby avoiding the accumulation of powder in the drum 2 and affecting the subsequent uniformity of film formation on the surface of the magnet blank. A small amount of excess liquid can also flow out of the cavity 211 through the liquid outlet 219. At the same time, the liquid outlet 219 reduces the inner wall area of the straight cylindrical portion 214 and the second conical portion 216, thereby reducing the reflection of the sprayed liquid by the inner wall of the drum 2 and improving the uniformity of the spraying on the surface of the magnet blank.

[0076] like Figure 9 As shown, in some embodiments, the spray mechanism 5 includes: a spray rack 51 , a spray gun 52 , a first air pump 53 and a flow pump 54 .

[0077] The spray rack 51 is mounted on the first support frame 1. Optionally, the spray rack 51 includes a first support rod 511 and a second support rod 512. The first support rod 511 is connected to the first support frame 1, and the second support rod 512 is rotatably mounted on the end of the first support rod 511. One end of the second support rod 512 extends into the cavity 211 of the drum 2. The connection between the first and second support rods 511 and 512 is a conventional hinged structure. Once the second support rod 512 is rotated into position, it can be locked with screws. The spray gun 52 is mounted on the second support rod 512 of the spray rack 51. The position of the spray gun 52 can be adjusted by rotating the second support rod 512. The first air pump 53 and the flow pump 55 are both mounted on the first support frame 1 and connected to the spray gun 52. The first air pump 53 supplies air at a preset pressure to the spray gun 52, while the flow pump 55 supplies a constant flow of treatment liquid to the spray gun 52. The spray gun 52 sprays a mixture of air and treatment liquid, which helps improve spray uniformity.

[0078] Optionally, the pressure of the first air pump 53 is 0.01-0.1 MPa, and the flow rate of the flow pump 54 is 1.5-10 ml / min.

[0079] like Figure 10 As shown, in some embodiments, the drying mechanism 6 includes: a second air pump 61, a heater 62 and a first air nozzle 63. The second air pump 61, the heater 62 and the first air nozzle 63 are all arranged on the first support frame 1.

[0080] The second air pump 61 outputs gas at a preset pressure, optionally air. A heater 62 is connected to the second air pump 61 and is used to heat the gas, for example, to 120°C. A first air nozzle 63 is connected to the heater 62 and extends into the cavity 211 of the drum 2. The outlet of the first air nozzle 63 blows hot air to dry and solidify the treatment liquid on the surface of the magnet blank.

[0081] Optionally, the air outlet of the first air nozzle 63 is a flat air outlet, and the blowing pressure is: ≥0.2MPa.

[0082] like Figure 11 As shown, the spraying device 10 further includes a blower mechanism 7, which includes a third air pump 71 and a second air nozzle 72. The third air pump 71 and the second air nozzle 72 are both disposed on the first support frame 1. The second air nozzle 72 is connected to the third air pump 73 and is disposed toward the liquid outlet 219.

[0083] The third air pump 73 delivers air at a preset pressure to the second air nozzle 72. The air from the second air nozzle 72 enters the cavity 211 through the liquid outlet 219, thereby blowing off any magnet blanks adhering to the sidewalls of the drum 2. Optionally, air blowing mechanisms 7 are provided on both sides of the drum 2. The pressure of the third air pump 73 is ≥ 0.1 MPa.

[0084] When the magnet blank is thin, the gas blown out by the second air nozzle 72 can increase the turning of the magnet blank inside the drum 2, avoid adhesion between magnet blanks, and ensure that the surface of the magnet blank can be evenly sprayed with the treatment liquid.

[0085] In some embodiments, the loading device 20 includes a conveyor belt, one end of which can enter the cavity 211 of the drum 2 to convey the magnet blank to the drum 2. Optionally, a roller is provided at the bottom end of the conveyor belt to move the conveyor belt.

[0086] like Figure 12 As shown, the discharging device 30 includes: a second support frame 310 and a material box 320. The second support frame 310 can be a frame structure. The bottom of the second support frame 310 is provided with a roller 330. Optionally, the second support frame 310 is moved by AGV (automatic guided vehicle).

[0087] The material box 320 is disposed on the second support frame 310. For example, the material box 320 can enter the accommodating cavity of the second support frame 310 through the side wall opening of the second support frame 310.

[0088] After spraying the magnet blank, the discharge device 30 is pulled to the bottom of the discharge port 212, and the discharge plate 22 is moved upward. The magnet blank falls from the discharge port 212 and enters the material box 320 through the top opening of the second support frame 310. After the material is taken out, the discharge device 30 is pulled out.

[0089] In some embodiments, the discharging device 30 further includes a sieve plate 340 , which is disposed on the second support frame 310 and located above the material box 320 .

[0090] For smaller magnet blanks, auxiliary materials are added to drum 2 and sprayed together with the magnet blanks. The auxiliary materials, such as zirconia or alumina balls, are used to isolate the magnet blanks and prevent them from colliding during the turning process. The mesh holes in the sieve plate 340 allow the auxiliary materials to pass through, but not the magnet blanks. The auxiliary materials are separated from the magnet blanks during unloading from drum 2.

[0091] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the technical solutions and core concepts of the present application. Therefore, changes or modifications made by those skilled in the art based on the concepts of the present application, the specific implementation methods, and the scope of application of the present application, all fall within the scope of protection of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A magnet surface film forming system, characterized in that: include: A spraying device, used for spraying a treatment liquid onto the surface of the magnet blank and drying the treatment liquid on the surface of the magnet blank; A feeding device, used for conveying the magnet blank to the spraying device; a discharging device capable of moving to the bottom of the spraying device and receiving the magnet blanks output by the spraying device; Wherein, the spraying device comprises: a first support frame; Roller, including: A drum body is provided with a cavity with an opening at one end, the drum body is rotatably mounted on the first support frame, and a side wall of the drum body is provided with a discharge port; and A discharge plate is slidably arranged on the drum body, and the discharge plate can close the discharge port; A mechanical arm is provided on the first supporting frame, and the mechanical arm is capable of driving the stripper plate to slide; A driver is provided on the first support frame, and is used to drive the drum body to rotate; a spraying mechanism, for spraying a treatment liquid into the cavity of the drum body; The drying mechanism is used for heating the material in the cavity.

2. The magnet surface film forming system according to claim 1, characterized in that: The drum body is provided with a sliding hole; The stripping plate is slidably arranged in the sliding hole, and a limit block is arranged at the end of the stripping plate, and the mechanical arm can clamp the limit block.

3. The magnet surface film forming system according to claim 1, characterized in that: The drum body comprises: straight tube; a first tapered portion, provided at one end of the straight cylindrical portion; a second tapered portion, disposed at the other end of the straight cylindrical portion; an end plate, disposed at an end portion of the second tapered portion; A rotating shaft is arranged on the end plate, the rotating shaft is rotatably connected to the first supporting frame, and the axis of the roller body is inclined relative to the horizontal plane.

4. The magnet surface film forming system according to claim 1, characterized in that: The spray mechanism comprises: A spray rack, arranged on the first supporting frame; A spray gun, arranged on the spray rack; a first air pump connected to the spray gun; A flow pump is connected to the spray gun.

5. The magnet surface film forming system according to claim 1, characterized in that: The drying mechanism comprises: a second air pump, disposed on the first support frame; a heater, disposed on the first support frame, the heater being connected to the second air pump and configured to heat the gas; A first air nozzle is arranged on the first support frame, the first air nozzle is connected to the heater, and the first air nozzle extends into the cavity of the drum body.

6. The magnet surface film forming system according to claim 1, characterized in that: The side wall of the drum body is provided with a liquid outlet, and the spraying device further includes a blower mechanism, which includes: a third air pump, disposed on the first support frame; The second air nozzle is arranged on the first supporting frame, the second air nozzle is connected to the third air pump, and the second air nozzle is arranged toward the liquid outlet.

7. The magnet surface film forming system according to claim 1, characterized in that: The feeding device includes a conveyor belt, one end of which can enter the spraying device.

8. The magnet surface film forming system according to claim 1, characterized in that: The discharging device comprises: A second support frame, with rollers provided at the bottom; The material box is arranged on the second supporting frame.

9. The magnet surface film forming system according to claim 8, characterized in that: The discharging device further includes a sieve plate, which is arranged on the second supporting frame and located above the material box.

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