CN112076961A - Method and device for spraying surface of bonded neodymium-iron-boron magnet - Google Patents
Method and device for spraying surface of bonded neodymium-iron-boron magnet Download PDFInfo
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- CN112076961A CN112076961A CN202010813299.8A CN202010813299A CN112076961A CN 112076961 A CN112076961 A CN 112076961A CN 202010813299 A CN202010813299 A CN 202010813299A CN 112076961 A CN112076961 A CN 112076961A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
- B05B12/124—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to distance between spray apparatus and target
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a method and a device for spraying the surface of a bonded neodymium iron boron magnet, and the method for spraying the surface of the bonded neodymium iron boron magnet comprises the following steps: the method comprises the following steps: placing a plurality of bonded neodymium iron boron magnets on a flat plate at equal intervals; step two: preparing a spraying liquid, mixing the epoxy resin coating and the diluent in proportion and uniformly stirring to form the spraying liquid; step three: pressing the spraying liquid into a spray gun to form uniform spraying; step four: controlling the spray gun to move uniformly, and spraying the product above the flat plate; step five: and (4) rotating the flat plate for multiple times, and repeating the step four after each rotation until the thickness of the coating film reaches the required thickness. A device for spraying the surface of a bonded neodymium-iron-boron magnet comprises a spray gun and a flat plate. The invention provides a method and a device for spraying the surface of a bonded neodymium iron boron magnet, which solve the problem that the surface of the bonded neodymium iron boron magnet is easy to oxidize and rust; the coating is ensured to be uniform, and the dimensional accuracy is improved; the loss of the coating is reduced, the cost is reduced, and meanwhile, the coating thickness is convenient to control.
Description
Technical Field
The invention relates to the field of magnet preparation, in particular to a method and a device for spraying the surface of a bonded neodymium iron boron magnet.
Background
The neodymium iron boron magnet has excellent magnetic performance and high cost performance, and is widely applied to the technical fields of electronics, motors, communication and the like. The bonded neodymium iron boron magnet has very active property and low surface corrosion resistance, and the magnetic property of the bonded neodymium iron boron magnet is seriously influenced after oxidation and rusting, so that the service life and the application field of the bonded neodymium iron boron magnet are greatly limited. Therefore, the surface treatment is generally carried out on the bonded neodymium iron boron magnet to improve the corrosion resistance, one of the surface treatment processes is spraying, but when spraying is carried out, the thickness and the uniformity of a paint layer are influenced by various factors such as spraying distance, spraying angle, spraying time and product structure, the problem of uneven thickness of the paint layer exists, and the size precision is higher. In addition, in order to ensure that the salt spray test does not rust within 24 hours, the average film thickness of the coating also needs to be more than 0.1mm, but the thickness of the coating is generally difficult to control, and when the film thickness of the coating is too small, the corrosion resistance requirement of the coating is difficult to meet; when the film thickness of the coating is too large, the corrosion resistance of the product is ensured, but the using amount of the coating is increased, and the cost is increased.
For example, the publication No. CN102383156A of "a compound protection method for electroplating and spraying of neodymium iron boron magnet" disclosed in the chinese patent literature includes a step of pretreating the neodymium iron boron magnet, a step of electroplating the pretreated neodymium iron boron magnet, a step of spraying an anti-corrosion coating on the surface of the electroplated neodymium iron boron magnet, a step of pre-curing the sprayed neodymium iron boron magnet, and a step of curing the pre-cured neodymium iron boron magnet; the advantage is that the hole defect of electroplating coating has been overcome to corrosion resistant coating to form new inoxidizing coating outside electroplating coating, this technical scheme forms dual protection to the neodymium iron boron magnet through corrosion resistant coating and electroplating coating, has improved the corrosion resistance of neodymium iron boron magnet, but has increased protective coating's thickness, and the cost is higher and is difficult to control the coating thickness.
Disclosure of Invention
The invention provides a method and a device for spraying the surface of a bonded neodymium iron boron magnet, aiming at overcoming the problems of uneven coating, difficult control of the thickness of the coating and the like in the prior art, and solving the problem that the surface of the bonded neodymium iron boron magnet is easy to oxidize and rust; the coating is ensured to be uniform, and the dimensional accuracy is improved; the loss of the coating is reduced, the cost is reduced, and meanwhile, the coating thickness is convenient to control.
In order to achieve the purpose, the invention adopts the following technical scheme:
a surface spraying method for a bonded neodymium iron boron magnet comprises the following steps:
the method comprises the following steps: placing a plurality of bonded neodymium iron boron magnets on a flat plate at equal intervals;
step two: preparing a spraying liquid, mixing the epoxy resin coating and the diluent in proportion and uniformly stirring to form the spraying liquid;
step three: pressing the spraying liquid into a spray gun, and adjusting the internal pressure and the position of the spray gun to form uniform spraying;
step four: controlling the spray gun to move uniformly, and spraying the product above the flat plate;
step five: and (4) rotating the flat plate for multiple times, and repeating the step four after each rotation until the thickness of the coating film reaches the required thickness.
In the technical scheme, the internal parameters of the spray gun are adjusted, so that the coating is sprayed out from the spray gun to form uniform spraying, the spray gun moves uniformly, the coating is uniform when the spray gun sprays the spraying liquid to any position, and the bonded neodymium iron boron magnet is placed on the flat plate at equal intervals in the first step, so that the spraying range of the spray gun is controlled conveniently, the coating is ensured to be uniformly covered on the surface of a product, and the product is the bonded neodymium iron boron magnet; the coating covering on each product on the flat plate is quantitative and uniform, so that the uniformity of the coating is ensured, the thickness of the coating after each spraying is ensured to be constant, the control of the thickness of the coating is further facilitated, the thickness of the coating can be controlled according to the spraying times, the loss of the coating is reduced, and the cost is reduced; and in the fifth step, the flat plate is rotated for multiple times, so that the products can be conveniently sprayed from different angles, the size precision of the products is improved, the surfaces of the products are guaranteed to be sprayed, and the oxidation and rusting of the products are avoided.
Preferably, in the first step, the distance between adjacent bonded ndfeb magnets is greater than the height of the bonded ndfeb magnets.
Such setting is favorable to avoiding sheltering from each other and then influencing the degree of consistency and the size precision of coating between the adjacent product in the spraying process.
Preferably, the mixing ratio of the epoxy resin coating and the diluent in the second step is 1: (1.0-1.5).
The thinner is used for reducing the viscosity of the epoxy resin coating, and the mixing ratio is set to be 1: (1.0-1.5) the formed spraying liquid is conveniently formed into spray in a spray gun for spraying.
Preferably, the third step further comprises adjusting the discharge amount of the lance, the inclination angle of the nozzle and the height of the nozzle from the flat plate.
Controlling the density of the spray by controlling the discharge of the spray gun, thereby controlling the thickness of the coating sprayed on the product; and to the adjustment of nozzle inclination and nozzle from the height of dull and stereotyped, then be convenient for control the shape of the spraying that forms, and then the spraying scope of the spraying that controls to form, carry out the spraying to the product in the corresponding scope on the dull and stereotyped and do not influence the product of other positions, improve product coating quality.
Preferably, in the fifth step, the plate is rotated by 90 degrees and the plate is rotated three times.
When the product is in a regular shape (such as a cylinder, a cuboid, a ring and the like), the flat plate rotates for 90 degrees and rotates for three times around the same direction, and the step four is repeated to perform spraying after each rotation, so that the coating is coated on each surface of the product.
The technical scheme adopted for realizing the other purpose of the invention is as follows: the utility model provides a bonding neodymium iron boron magnetism body surface spraying device, is including the spray gun that is used for the spraying and the flat board that is used for placing the product, the spray gun sets up in dull and stereotyped top, be provided with interval H between spray gun and the flat board.
In the technical scheme, the spray gun is used for spraying the product, the flat plate is used for placing the product, and a distance H is arranged between the spray gun and the flat plate, so that the spray gun can spray the product conveniently, and the spray gun is prevented from directly contacting the product in the moving process; meanwhile, by adjusting the internal parameters of the spray gun, the spraying liquid is uniformly sprayed, and the coating on the product is ensured to be uniform.
Preferably, the spray gun comprises a booster pump, an air pipeline for introducing compressed air, a coating pipeline for introducing mixed coating and a nozzle for spraying the spraying liquid, wherein the air pipeline and the coating pipeline are respectively communicated with the nozzle, an atomization electromagnetic valve is arranged on the air pipeline, and a spraying electromagnetic valve is arranged on the coating pipeline.
The booster pump is used for impressing the spraying liquid into the coating pipeline, and air conduit and coating pipeline are used for carrying compressed air and spraying liquid respectively, form the spraying after the spraying liquid gets into the nozzle under compressed air's drive, wherein the atomizing solenoid valve is used for controlling compressed air and ventilates and open and close, and the spraying solenoid valve is used for controlling the break-make of coating pipeline, in addition, atomizing solenoid valve and spraying solenoid valve still provide the inside pressure of spray gun, be convenient for form even spraying and carry out the spraying, be favorable to the spraying even, improve the coating quality.
Preferably, a rotating component for driving the flat plate to rotate is arranged below the flat plate.
The rotating assembly is used for driving the flat plate to rotate, and then drives the product to rotate, so that the spray gun sprays and coats the product from a plurality of angles, the uniformity of the coating is improved, and the oxidation rusting of the coating is avoided.
Preferably, the flat plate is provided with a metal material having a magnetic attraction effect.
The flat plate and the bonded neodymium iron boron are mutually adsorbed, so that the influence of the pressure of a spray gun on the coating quality caused by the pressure movement of the spray gun in the spray coating process of the spray gun is avoided.
Preferably, a plurality of positioning lines are provided on the flat plate.
The placement position of the product is determined by the arrangement of the positioning lines, so that the product can be uniformly placed on the flat plate, and the efficiency is improved.
Therefore, the invention has the following beneficial effects:
(1) the problem that the surface of the bonded neodymium iron boron magnet is easy to oxidize and rust is solved;
(2) the coating is ensured to be uniform, and the dimensional accuracy is improved;
(3) the loss of the coating is reduced, and the cost is reduced;
(4) the coating on each product covered on the flat plate is quantitative and uniform by controlling the internal parameters of the spray gun, so that the thickness of the coating after each spraying is ensured, and the thickness of the coating is convenient to control;
(5) the spray spraying range is convenient to control by adjusting the inclination angle of the nozzle and the height of the flat plate in the nozzle, and the coating quality of a product is improved;
(6) set up rotating assembly under the flat board and be favorable to driving the whole rotation of product, and then be convenient for carry out the spraying to the product from different angles, improve the degree of consistency of coating, guarantee simultaneously that each surface of product all carries out the spraying, avoid its oxidation to rust.
Drawings
FIG. 1 is a schematic structural diagram of a surface spraying device for bonding NdFeB magnets;
FIG. 2 is a schematic view of a flat sheet on which a product is placed;
in the figure: 1. spray gun 101, air conduit 102, atomizing solenoid valve 103, booster pump 104, spray solenoid valve 105, paint conduit 106, spray nozzle 2, product 3, plate 4, rotating assembly 401, rotating shaft 402, rotating motor.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1:
a surface spraying method for a bonded neodymium iron boron magnet comprises the following steps:
the method comprises the following steps: placing a plurality of bonded neodymium iron boron magnets on the flat plate 3 at equal intervals;
step two: epoxy coating and diluent were mixed as 1: (1.0-1.5) and uniformly stirring to form spraying liquid;
step three: pressing the mixed coating into the spray gun 1 through a booster pump 103, and adjusting the internal pressure of the spray gun 1 and the position of the spray gun 1 to form uniform spraying;
step four: controlling the spray gun 1 to move uniformly, controlling the moving track and the working state of the spray gun, and spraying the product 2 above the flat plate 3;
step five: and (4) rotating the flat plate 3 for multiple times, and repeating the step four after each rotation until the thickness of the coating film reaches the required thickness.
In above-mentioned technical scheme, the bonding neodymium iron boron magnetism body is product 2 promptly, places product 2 equidistant on dull and stereotyped 3, is favorable to carrying out the spraying to ration product 2, and epoxy coating and diluent are according to 1: (1.0-1.5), the diluent dilutes the epoxy resin coating, the viscosity of the coating is reduced, the spraying liquid is conveniently dispersed into tiny droplets to form spray, the coating is sprayed out of the spray gun 1 to form uniform spray by adjusting the internal parameters of the spray gun 1, the coating is conveniently ensured to uniformly cover the surface of the product 2 within the spraying range of the spray gun 1, the coating covering on each product 2 on the flat plate 3 is quantitative and uniform, the coating uniformity is ensured, the thickness of the coating after each spraying is ensured to be constant, the thickness of the coating is further conveniently controlled, the thickness of the coating can be controlled according to the spraying times, the loss of the coating is reduced, and the cost is reduced; and in the fifth step, the flat plate 3 is rotated for multiple times, so that the products 2 can be conveniently sprayed from different angles, the size precision of the products 2 is improved, and meanwhile, all the surfaces of the products 2 are sprayed, and the oxidation and rusting of the products are avoided.
In addition, in the third step, the method also comprises the steps of adjusting the discharge amount of the spray gun 1, the inclination angle of the nozzle 106 and the height of the nozzle 106 from the flat plate 3, and controlling the density of the spray by controlling the discharge amount of the spray gun 1 so as to control the thickness of the coating sprayed on the product 2; and to the adjustment of nozzle 106 inclination and the height of dull and stereotyped 3 in the nozzle 106, then be convenient for control the shape of the spraying that forms, and then the spraying scope of the spraying that controls to form sprays product 2 in the corresponding scope on dull and stereotyped 3 and does not influence the product 2 of other positions, improves product 2 coating quality.
In the fourth step, the movement track and the working state of the spray gun 1 are controlled by a PLC and a servo motor.
In step five, the flat plate 3 is controlled to rotate by the rotating motor 402.
Example 2:
the embodiment 2 is basically the same as the embodiment 1, except that: in step one, the distance between the adjacent bonding neodymium iron boron magnet is greater than the height of bonding neodymium iron boron magnet, and such setting is favorable to avoiding sheltering from each other between the adjacent product 2 in the spraying process and then influencing the degree of consistency and the size precision of coating.
Example 3:
as shown in fig. 1 and 2, in embodiment 3, a bonded neodymium iron boron magnet surface spraying device includes a spray gun 1 and a flat plate 3, the spray gun 1 is used for spraying a product 2, the flat plate 3 is used for placing the product 2, the spray gun 1 is arranged above the flat plate 3, and a gap H is arranged between the spray gun 1 and the flat plate 3, in the technical scheme, the spray gun 1 is used for spraying the product 2, and the flat plate 3 is used for placing the product 2, wherein the gap H is arranged between the spray gun 1 and the flat plate 3, so that the spray gun 1 can conveniently spray the product 2, and the spray gun 1 is prevented from directly contacting the product 2 in the moving process; meanwhile, by adjusting the internal parameters of the spray gun 1, the spraying liquid is uniformly sprayed, and the coating uniformity of the product 2 is ensured.
In addition, the flat plate 3 is made of a metal material with magnetic adsorption effect, such as iron, and when the product 2 is placed on the flat plate 3, the product 2 is adsorbed on the flat plate 3 under the action of magnetic force, so that the product 2 is prevented from moving during spraying.
Further, the spray gun 1 comprises a booster pump 103, a paint pipeline 105, an air pipeline 101 and a nozzle 106, wherein the booster pump 103 is used for pressing paint into the spray gun 1, the paint pipeline 105 is used for conveying paint, the air pipeline 101 is used for conveying compressed air, the nozzle 106 is used for controlling a spraying solenoid valve 104 and an atomizing solenoid valve 102102 which are respectively arranged on the paint pipeline 105 and the air pipeline 101, the spraying solenoid valve 104 and the atomizing solenoid valve 102102 are respectively used for controlling the on-off of the paint pipeline 105 and the air pipeline 101, and the atomizing solenoid valve 102102 is used for providing atomizing pressure, namely facilitating the compressed air to form high-speed air flow, dispersing the spraying liquid into tiny liquid drops, and simultaneously forming uniform spray by controlling the pressure, so that the spraying liquid is uniformly sprayed when the paint is coated.
Example 4:
the technical scheme of the embodiment 4 is basically the same as that of the embodiment 3, and the difference is that: be provided with rotating assembly 4 at dull and stereotyped 3 lower extreme, rotating assembly 4 is used for driving dull and stereotyped 3 and rotates, controls dull and stereotyped 3's rotation angle simultaneously, is convenient for rotate in the regulation angle. Rotating assembly 4 includes rotation axis 401 and drives rotation axis 401 pivoted rotating electrical machines 402, and when dull and stereotyped 3 rotated, product 2 rotated simultaneously, made spray gun 1 carry out the spraying coating to product 2 from a plurality of angles, improved the degree of consistency of coating.
Example 5:
the embodiment 5 is basically the same as the embodiment 3, except that: be provided with a plurality of location lines on dull and stereotyped 3, the setting of location line is used for confirming the position of placing of bonding neodymium iron boron magnetism body, has guaranteed that product 2 places evenly, improves work efficiency, is favorable to the spraying simultaneously even.
Example 6:
embodiment 6 is an application embodiment of a method and a device for spraying the surface of a bonded neodymium-iron-boron magnet: when bonding neodymium iron boron magnetism body is regular magnetic ring structure, carry out the spraying to its surface and avoid its oxidation to rust, specifically include the following step:
the method comprises the following steps: placing the bonded neodymium iron boron magnetic rings on the flat plate 3 at equal intervals, wherein the distance between every two adjacent bonded neodymium iron boron magnetic rings is not less than the height of the bonded neodymium iron boron magnetic rings;
step two: epoxy coating and diluent were mixed as 1: (1.0-1.5) mixing, and uniformly stirring and mixing to form a spraying liquid;
step three: the spraying liquid is pressed into the spray gun 1 through a booster pump 103, the pressing-in amount of the spraying liquid is controlled, the on-off of a coating pipeline 105 is controlled through a spraying electromagnetic valve 104, the on-off of an air pipeline 101 is controlled through an atomizing electromagnetic valve 102102, the atomizing electromagnetic valve 102102 also provides atomizing pressure, namely compressed air forms high-speed air flow, spray is formed under the action of the high-speed air flow, the protruding amount of the spray gun 1 is controlled through the mutual matching of the booster pump 103 and the atomizing electromagnetic valve 102102, and then the position of the spray gun 1 is adjusted to determine the spraying range of the spray;
step four: programming through a PLC and a servo motor, controlling the moving track and the working state of the spray gun 1, and simultaneously ensuring that the spray gun moves uniformly in the working state;
step five: controlling the flat plate 3 to rotate clockwise by 90 degrees along the rotating shaft 401 by arranging the rotating shaft 401 and the rotating motor 402 below the middle of the flat plate 3, and repeating the step four;
step six: repeating the step five for three times, and finally finishing the spraying.
In the second step, the epoxy resin coating and the diluent are stirred by a stirrer for improving efficiency.
In the third step, the adjustment of the position of the spray gun 1 comprises adjusting the inclination angle of the spray nozzle, the height position of the spray nozzle and the atomization angle, wherein the height position of the spray nozzle is the distance between the spray nozzle and the flat plate 3, in the embodiment, the inclination angle of the spray nozzle is 40-50 degrees, the height position of the spray nozzle is 15-20 cm, and the atomization angle is 30-40 degrees.
In the fourth step, the spray gun 1 is firstly started outside the flat plate 3 to start paint spraying, after 0.5 second, the spray gun 1 starts to move uniformly until the spray gun 1 moves above the flat plate 3, when the spray gun 1 moves out of the flat plate 3, the paint spraying is stopped, the spray gun 1 is moved to other positions to spray the products 2 which are not sprayed by repeating the movement action, and the moving speed of the spray gun 1 is set to be 0.5-0.7 m/s.
According to the steps, the surface coating of the bonded neodymium iron boron magnetic ring is uniformly covered, according to the parameter setting, the film thickness of the coating can be controlled to be 0.0025-0.005mm every cycle of the step four, and when the film thickness reaches 0.015mm, a salt spray test can be carried out for 24 hours without rusting.
It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The above examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. The surface spraying method of the bonded neodymium iron boron magnet is characterized by comprising the following steps:
the method comprises the following steps: a plurality of bonded neodymium iron boron magnets are placed on the flat plate (3) at equal intervals;
step two: preparing a spraying liquid, mixing the epoxy resin coating and the diluent in proportion and uniformly stirring to form the spraying liquid;
step three: pressing the spraying liquid into the spray gun (1), and adjusting the internal pressure of the spray gun (1) and the position of the spray gun (1) to form uniform spraying;
step four: controlling the spray gun (1) to move uniformly, and spraying the product (2) above the flat plate (3);
step five: and (4) rotating the flat plate (3) for multiple times, and repeating the step four after each rotation until the thickness of the coating film reaches the required thickness.
2. The surface spraying method for the bonded NdFeB magnet as claimed in claim 1, wherein the distance between adjacent bonded NdFeB magnets in the first step is larger than the height of the bonded NdFeB magnet.
3. The method for spraying the surface of the bonded neodymium iron boron magnet as claimed in claim 1, wherein the mixing ratio of the epoxy resin coating and the diluent in the second step is 1: (1.0-1.5).
4. The surface spraying method for the bonded neodymium iron boron magnet is characterized by comprising the third step of adjusting the discharge quantity of the spray gun (1), the inclination angle of the nozzle (106) and the height of the nozzle (106) from the flat plate (3).
5. The surface spraying method for the bonded neodymium iron boron magnet according to claim 1, wherein in the fifth step, the rotation angle of the flat plate (3) is 90 degrees, and the flat plate (3) rotates three times.
6. The utility model provides a bonding neodymium iron boron magnet surface spraying device, characterized by, including spray gun (1) that is used for the spraying and dull and stereotyped (3) that are used for placing product (2), spray gun (1) sets up the top at dull and stereotyped (3), be provided with interval H between spray gun (1) and dull and stereotyped (3).
7. The bonding neodymium iron boron magnet surface spraying device according to claim 6, characterized in that the spray gun (1) comprises a booster pump (103), an air pipeline (101) for introducing compressed air, a coating pipeline (105) for introducing mixed coating and a nozzle (106) for spraying out spraying liquid, the air pipeline (101) and the coating pipeline (105) are respectively communicated with the nozzle (106), an atomizing electromagnetic valve (102) is arranged on the air pipeline (101), and a spraying electromagnetic valve (104) is arranged on the coating pipeline (105).
8. The surface spraying device for the bonded NdFeB magnet according to claim 6, wherein a rotating component (4) for driving the flat plate (3) to rotate is arranged below the flat plate (3).
9. A bonded NdFeB surface spraying device according to any of claims 6-8, characterized in that the plate (3) is provided with a metallic material with magnetic attraction.
10. The bonded NdFeB surface spraying device according to any one of claims 6-8, wherein a plurality of positioning lines are arranged on the flat plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010813299.8A CN112076961A (en) | 2020-08-13 | 2020-08-13 | Method and device for spraying surface of bonded neodymium-iron-boron magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010813299.8A CN112076961A (en) | 2020-08-13 | 2020-08-13 | Method and device for spraying surface of bonded neodymium-iron-boron magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112076961A true CN112076961A (en) | 2020-12-15 |
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ID=73728223
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| CN202010813299.8A Pending CN112076961A (en) | 2020-08-13 | 2020-08-13 | Method and device for spraying surface of bonded neodymium-iron-boron magnet |
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Cited By (3)
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| CN113828463A (en) * | 2021-09-28 | 2021-12-24 | 营口理工学院 | Preparation equipment and preparation method of semiconductor metal oxide thin film material |
| CN114360887A (en) * | 2022-01-18 | 2022-04-15 | 天长市中德电子有限公司 | Preparation process of high-quality manganese-zinc ferrite magnetic ring |
| CN115155915A (en) * | 2022-08-01 | 2022-10-11 | 广东德磁科技有限公司 | Anti-magnetic ring plate sticking device of butt joint magnetic ring spraying equipment |
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| CN114360887A (en) * | 2022-01-18 | 2022-04-15 | 天长市中德电子有限公司 | Preparation process of high-quality manganese-zinc ferrite magnetic ring |
| CN114360887B (en) * | 2022-01-18 | 2023-07-25 | 天长市中德电子有限公司 | Preparation process of high-quality manganese zinc ferrite magnetic ring |
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Application publication date: 20201215 |