CN110000718B - Preparation device and preparation method of composite particles for polishing - Google Patents
Preparation device and preparation method of composite particles for polishing Download PDFInfo
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- CN110000718B CN110000718B CN201910214763.9A CN201910214763A CN110000718B CN 110000718 B CN110000718 B CN 110000718B CN 201910214763 A CN201910214763 A CN 201910214763A CN 110000718 B CN110000718 B CN 110000718B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/009—Tools not otherwise provided for
Abstract
The invention relates to the technical field of ultra-precision machining, in particular to a preparation device and a preparation method of composite particles for polishing, wherein magnetic particles with adhesive coated on the surfaces are input into a mixing and dispersing mechanism through a first spraying mechanism, abrasive materials with adhesive coated on the surfaces are input into the mixing and dispersing mechanism through a second spraying mechanism, mixed liquid obtained by fully mixing the magnetic particles and the abrasive materials in the mixing and dispersing mechanism is sprayed to a conveying mechanism, the mixed liquid is rapidly solidified under the action of a solidifying mechanism in the conveying process to form composite particle groups, and the composite particle groups are scraped off by a scraping mechanism at the tail end of the conveying mechanism; transferring the composite particle clusters to a ball milling mechanism for ball milling and stirring to form composite particle powder, transferring the composite particle powder to a screening mechanism for screening to obtain magnetic composite particles within a set size range. The invention combines the magnetic particles and the abrasive into the composite particles, and solves the problem of low polishing efficiency caused by insufficient bonding strength of the abrasive in the polishing process.
Description
Technical Field
The invention relates to the technical field of ultra-precision machining, in particular to a preparation device and a preparation method of composite particles for polishing.
Background
The magneto-rheological polishing technology is a novel optical surface processing method, has the advantages of good polishing effect, no generation of subsurface damage, suitability for complex surface processing and the like which are not possessed by the traditional polishing, has been developed into a revolutionary optical surface processing method, and is particularly suitable for ultra-precision processing of axisymmetric aspheric surfaces. In the magnetorheological polishing technology, the magnetorheological polishing solution consisting of magnetic particles, base solution, grinding materials and additives plays a main role. In the polishing process, an abrasive material plays a major role. In the existing magnetorheological polishing solution, magnetic particles and abrasive are separated, the motion of the abrasive during polishing is complex, the removal efficiency is not high, and the abrasive is easily extruded by a chain structure formed by the magnetic particles, so that the polishing efficiency is low. The applicant prepares the composite particles of the abrasive and the magnetic particles by a liquid phase method so that the abrasive component is generated on the surface of the magnetic particles, but the method is not suitable for chemically stable abrasives such as diamond and has no universality.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a preparation device and a preparation method of composite particles for polishing, which combine magnetic particles and abrasive materials, enhance the combination strength of the abrasive materials in the polishing process, improve the polishing efficiency and the utilization rate of the abrasive materials, and can ensure that enough abrasive materials are contacted with a workpiece and polish the workpiece.
In order to solve the technical problems, the invention adopts the technical scheme that:
the preparation device comprises a base, a first spraying mechanism, a second spraying mechanism, a mixing and dispersing mechanism, a conveying mechanism, a scraping mechanism for scraping composite particle clusters, a ball milling mechanism for processing the composite particle clusters to composite particle powder and a screening mechanism for screening the composite particles within a set size range, wherein the first spraying mechanism, the second spraying mechanism, the mixing and dispersing mechanism and the conveying mechanism are fixedly arranged on the base; the mixing and dispersing mechanism is provided with an input end communicated with the first spraying mechanism and the second spraying mechanism and an output end arranged above the conveying mechanism, and the conveying mechanism is provided with a curing mechanism for creating a curing condition of the adhesive along the way; the scraping mechanism is arranged at the tail end of the conveying mechanism, the ball milling mechanism is provided with an input port for inputting the composite particle clusters and an output port for outputting the composite particle powder, and the screening mechanism is provided with a material conveying port for inputting the composite particle powder.
According to the preparation device of the composite particles for polishing, the magnetic particles with the surfaces coated with the adhesive are input into the mixing and dispersing mechanism through the first spraying mechanism, the abrasive materials with the surfaces coated with the adhesive are input into the mixing and dispersing mechanism through the second spraying mechanism, the mixed liquid of the magnetic particles and the abrasive materials after being fully mixed in the mixing and dispersing mechanism is sprayed onto the conveying mechanism, the mixed liquid is rapidly solidified to form composite particle groups under the action of the solidifying mechanism in the conveying process of the conveying mechanism, and the composite particle groups are scraped off by the scraping mechanism at the tail end of the conveying mechanism; transferring the composite particle clusters to a ball milling mechanism for ball milling and stirring to form composite particle powder, transferring the composite particle powder to a screening mechanism for screening to obtain magnetic composite particles within a set size range. The invention combines the magnetic particles and the abrasive into the composite particles, and solves the problem of low polishing efficiency caused by insufficient bonding strength of the abrasive in the polishing process.
Further, first spraying mechanism, second spraying mechanism are the high-pressure bottle that can be connected with the air pump, the input that mixes dispersion mechanism is connected with the three-way valve, and first spraying mechanism, second spraying mechanism are respectively through two interface connection of pipeline with the three-way valve, be equipped with single intercommunication switch on the pipeline. When the mixing and dispersing mechanism works, the air pump is started, the high-pressure bottle is opened after the air pressure is stable, and the first mixed liquid and the second mixed liquid in the high-pressure bottle are extruded to the mixing and dispersing mechanism under the action of the air pressure.
Furthermore, the mixing and dispersing mechanism is provided with a spiral nozzle connected with a three-way valve, and a spiral flow passage is arranged in the spiral nozzle. The first mixed liquid and the second mixed liquid enter the spiral flow channel through the three-way valve to be fully mixed to obtain mixed liquid.
Further, the conveying mechanism comprises a first belt wheel, a second belt wheel and a conveying belt, the conveying belt is wound on the outer edges of the first belt wheel and the second belt wheel, and the first belt wheel is connected with a first driving motor; and a lubricating belt wheel is arranged on the outer surface of the conveying belt in a contact manner. The first driving motor drives the first belt wheel to rotate, and the first belt wheel drives the conveying belt and the second belt wheel to rotate; an oil tank containing lubricating oil is arranged below the lubricating belt wheel, and the lubricating belt wheel can uniformly coat the lubricating oil on the conveying belt, so that the adhesive is not excessively bonded on the surface of the conveying belt when being cured.
Furthermore, the binder is an ultraviolet curing binder, and the curing mechanism is an ultraviolet lamp with adjustable strength. The invention can select the ultraviolet light curing adhesive with proper performance according to the application of the composite particles, the mixed liquid is sprayed on the conveyor belt and is continuously irradiated by the ultraviolet lamp in the moving time of the conveyor belt, and the ultraviolet light curing adhesive is rapidly cured due to the irradiation of the ultraviolet light, so that the mixed liquid is cured to form the composite particle clusters; the illumination intensity of the ultraviolet lamp can be adjusted according to the type and the concentration of the ultraviolet curing adhesive.
Further, the scraping mechanism comprises a scraper, a feeding bolt, a bearing plate arranged on the base and a material collecting plate arranged below the scraper, the scraper is fixedly arranged on the bearing plate, and the bearing plate is connected with the base through the feeding bolt. The distance between the scraper and the conveyor belt can be adjusted through the feeding bolt so as to better scrape off the composite particle clusters attached to the surface of the conveyor belt.
Furthermore, the screening mechanism comprises a base, a four-way pipe fixed on the base and a rotating disk internally provided with a magnet, the four-way pipe is provided with a first interface connected with the material conveying port, a first outlet for outputting nonmagnetic composite particles, a second outlet for outputting composite particles within a set size range and a third outlet for outputting composite particles beyond the set size range, the first outlet is arranged right below the first interface, and a filter screen is arranged at the second outlet; the rotary disc is arranged beside the first interface, a rotary shaft is arranged at the center of the rotary disc, and the rotary shaft is connected with a second driving motor. The second driving motor drives the rotating disc to rotate, the composite particle powder enters the four-way pipeline through the material conveying opening, the nonmagnetic composite particles can vertically fall under the action of self gravity and are discharged through the first interface, the magnetic composite particles enter the branch pipeline due to attraction of the magnets in the rotating disc and rotation of the magnets, the composite particles entering the branch pipeline slide down along the branch pipeline under the action of gravity, and secondary screening is carried out at the filter screen.
Further, vibrating motor is installed to the four-way pipeline outer wall, vibrating motor locates between first export and the second export. The composite particles entering the branch pipeline slide down along the pipeline under the action of gravity and a vibration motor, and secondary screening is carried out on the filter screen; the setting of vibrating motor can effectively prevent the inside compound granule's of four-way pipe jam, and can guarantee the filterable high efficiency of compound granule.
Furthermore, the magnets are strip magnets, the magnets arranged in the rotating disc are multiple groups, and the multiple groups of magnets are uniformly distributed in a homopolar divergent mode. The rotating disc circularly moves under the action of the second driving motor to form a rotating magnetic field, so that the magnetic composite particles are separated from the non-magnetic composite particles under the action of the rotating magnetic field; the magnetic field strength of the magnets mounted on the rotating disk may be selected according to the size range set for the composite particles.
The invention also provides a preparation method of the composite particles for polishing, which comprises the following steps:
s10, selecting magnetic particles, an abrasive and an ultraviolet light curing adhesive, adding a first mixed solution formed by uniformly mixing the magnetic particles and the ultraviolet light curing adhesive into a first spraying mechanism, and adding a second mixed solution formed by uniformly mixing the abrasive and the ultraviolet light curing adhesive into a second spraying mechanism;
s20, under the action of an air pump, extruding the first mixed liquid and the second mixed liquid in the step S10 into a spiral nozzle, fully mixing the first mixed liquid and the second mixed liquid to form a third mixed liquid, and spraying the third mixed liquid onto a conveying belt;
s30, irradiating the third mixed solution in the step S20 by an ultraviolet light lamp in the conveying process on the conveying belt, quickly curing the ultraviolet curing binder to form composite particle groups, and scraping the composite particle groups by a scraper when the composite particle groups move to a scraping mechanism;
s40, transferring the composite particle clusters in the step S30 to a ball milling mechanism for ball milling and stirring to form composite particle powder;
s50, the composite particle powder in the step S40 enters a screening mechanism through a material conveying port, nonmagnetic composite particles are output from a first outlet, composite particles within a set size range are output from a second outlet, and composite particles beyond the set size range are output from a third outlet.
The preparation method of the composite particles for polishing combines the magnetic particles and the abrasive into the composite particles, enhances the combination strength of the abrasive in the polishing process, improves the utilization rate of the abrasive, can ensure that enough abrasive is in contact with a workpiece and polishes the workpiece, and can improve the polishing efficiency of the magnetorheological fluid.
Compared with the prior art, the invention has the beneficial effects that:
according to the preparation device of the composite particles for polishing, the magnetic particles and the abrasive are compounded into the composite particles, so that the bonding strength of the abrasive in the polishing process is enhanced, sufficient abrasive is ensured to be in contact with and polish a workpiece, and the polishing efficiency and the utilization rate of the abrasive are improved;
according to the preparation method of the composite particles for polishing, the magnetic particles and the abrasive are compounded into the composite particles, the composite particles in a set size range can be rapidly screened out, and the problem of low polishing efficiency caused by insufficient abrasive binding strength in polishing is effectively solved.
Drawings
FIG. 1 is a schematic view of the construction of an apparatus for producing composite particles for polishing;
FIG. 2 is a schematic structural view of a scraping mechanism of the apparatus for producing composite particles for polishing;
FIG. 3 is a schematic structural view I of a screening mechanism of an apparatus for producing composite particles for polishing;
FIG. 4 is a schematic structural view II of a screening mechanism of the apparatus for producing composite particles for polishing.
In the drawings: 1-a base; 2-a first spraying mechanism; 21-three-way valve; 22-single pass switch; 23-a bomb holder; 3-a second spraying mechanism; 4-a mixing and dispersing mechanism; 41-spiral nozzle; 42-a spiral flow channel; 5-a conveying mechanism; 51-a first pulley; 52-a second pulley; 53-a conveyor belt; 54-a first drive motor; 55-lubricating the pulley; 56-oil tank; 6-scraping mechanism; 61-a scraper; 62-a feed bolt; 63-a carrier plate; 64-a material receiving tray; 65-metal gaskets; 66-fastening bolts; 7-a screening mechanism; 71-a material conveying port; 72-a base; 73-four-way pipe; 731-first interface; 732-a first outlet; 733-a second outlet; 734-a third outlet; 74-rotating disk; 75-a magnet; 76-a filter screen; 77-rotation axis; 78-a second drive motor; 79-vibration motor; 8-a curing mechanism.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Example one
Fig. 1 to 4 show an embodiment of a device for preparing composite particles for polishing according to the present invention, which includes a base 1, a first spraying mechanism 2, a second spraying mechanism 3, a mixing and dispersing mechanism 4, a conveying mechanism 5, a scraping mechanism 6 for scraping off composite particle clusters, a ball milling mechanism for processing the composite particle clusters into composite particle powder, and a screening mechanism 7 for screening composite particles within a predetermined size range, wherein the first spraying mechanism 2, the second spraying mechanism 3, the mixing and dispersing mechanism 4, and the conveying mechanism 5 are fixedly mounted on the base 1; the first spraying mechanism 2 is internally filled with magnetic particles coated with a binder on the surface, the second spraying mechanism 3 is internally filled with abrasive materials coated with the binder on the surface, the mixing and dispersing mechanism 4 is provided with an input end communicated with the first spraying mechanism 2 and the second spraying mechanism 3 and an output end arranged above the conveying mechanism 5, and the conveying mechanism 5 is provided with a curing mechanism 8 for creating a binder curing condition along the way; the scraping mechanism 6 is arranged at the tail end of the conveying mechanism 5, the ball milling mechanism is provided with an input port for inputting the composite particle clusters and an output port for outputting the composite particle powder, and the screening mechanism 7 is provided with a material conveying port 71 for inputting the composite particle powder. The binder in the embodiment is an ultraviolet curing binder, and the ultraviolet curing binder on the market at present can be modified according to the use occasions of the composite particles to improve the physical and chemical properties of the ultraviolet curing binder, such as water resistance, heat resistance, shear strength and impact strength. Correspondingly, the curing mechanism 8 in this embodiment is an ultraviolet lamp, and the intensity of the ultraviolet lamp can be set according to the curing conditions of the ultraviolet curing adhesive.
In the implementation of the embodiment, the magnetic particles with the surface coated with the binder are input into the mixing and dispersing mechanism 4 through the first spraying mechanism 2, the abrasive material with the surface coated with the binder is input into the mixing and dispersing mechanism 4 through the second spraying mechanism 3, the mixed liquid obtained by fully mixing the magnetic particles and the abrasive material in the mixing and dispersing mechanism 4 is sprayed onto the conveying mechanism 5, the mixed liquid is rapidly solidified under the action of the solidifying mechanism 8 in the conveying process on the conveying mechanism 5 to form the composite particle group, and the composite particle group is scraped off at the tail end of the conveying mechanism 5 by the scraping mechanism 6; the composite particle clusters are transferred to a ball milling mechanism for ball milling and stirring to form composite particle powder, and the composite particle powder is transferred to a screening mechanism 7 for screening to obtain composite particles within a set size range.
As shown in fig. 1, the first spraying mechanism 2 and the second spraying mechanism 3 are both high-pressure bottles that can be connected to an air pump, the input end of the mixing and dispersing mechanism 4 is connected to a three-way valve 21, the first spraying mechanism 2 and the second spraying mechanism 3 are respectively connected to two ports of the three-way valve 21 through pipes, and the pipes are provided with single-connection switches 22. In implementation, the first spraying mechanism 2 and the second spraying mechanism 3 are clamped on the base 1 through a high-pressure bottle bracket 23, and the on-off of a pipeline is controlled through a single-communication switch 22; and (3) starting the air pump, opening the high-pressure bottle after the air pressure is stable, and extruding the first mixed liquid and the second mixed liquid in the high-pressure bottle to the mixing and dispersing mechanism 4 under the action of the air pressure. The single communication switch 22 of the present embodiment may also be provided as a solenoid-operated valve that can be controlled by the controller. Wherein, for making first mixed liquid and second mixed liquid intensive mixing, the mixed dispersion mechanism 4 of this embodiment is equipped with the spiral nozzle 41 of being connected with three-way valve 21, is equipped with spiral runner 42 in the spiral nozzle 41, and first mixed liquid and second mixed liquid spiral motion misce bene in spiral runner 42. To obtain a better mixing effect, the spiral structure of the present embodiment is a spiral structure that is equidistantly arranged and forms an included angle of 60 degrees with the axis.
As shown in fig. 1, the conveying mechanism 5 includes a first belt wheel 51, a second belt wheel 52 and a conveyor belt 53, the conveyor belt 53 is wound around the outer edges of the first belt wheel 51 and the second belt wheel 52, and the first belt wheel 51 is connected with a first driving motor 54; the outer surface of the belt 53 is provided with a lubricating pulley 55. In practice, the first driving motor 54 drives the first belt pulley 51 to rotate, and the first belt pulley 51 drives the transmission belt 53 and the second belt pulley 52 to rotate; an oil tank 56 containing lubricating oil is arranged below the lubricating pulley 55, and the lubricating pulley 55 is arranged to uniformly coat the lubricating oil on the conveying belt 53, so that the adhesive is not excessively adhered to the surface of the conveying belt 53 when cured. The rotation speed of the first driving motor 54 may be set according to the curing time of the uv curable adhesive under the conditions of the uv curable adhesive concentration and the uv illumination intensity.
As shown in fig. 1 and 2, the scraping mechanism 6 includes a scraper 61, a feeding bolt 62, a carrier plate 63 disposed on the base 1, and a material receiving tray 64 disposed below the scraper 61, the scraper 61 is fastened to the carrier plate 63 by a fastening bolt 66, and the carrier plate 63 is connected to the base 1 by the feeding bolt 62. The distance between the scraper 61 and the conveyor belt 53 can be adjusted by the feed bolt 62 to better scrape off the composite particle mass adhering to the surface of the conveyor belt 53. In order to limit the longitudinal movement of the scraper 61 to affect the scraping effect, the scraper 61 is provided with a metal gasket 65 in the present embodiment, and the metal gasket 65 fastens the scraper 61 on the bearing plate 63 through a fastening bolt 66.
As shown in fig. 3 and 4, the screening mechanism 7 includes a base 72, a four-way pipe 73 fixed to the base 72, and a rotating disk 74 having a magnet 75 therein, the four-way pipe 73 has a first port 731 connected to the material delivery port 71, a first outlet 732 for outputting nonmagnetic composite particles, a second outlet 733 for outputting composite particles within a predetermined size range, and a third outlet 734 for outputting composite particles outside the predetermined size range, the first outlet 732 is disposed right below the first port 731, and the second outlet 733 is provided with a filter screen 76; the rotary plate 74 is provided on the side of the first port 731, a rotary shaft 77 is provided at the center of the rotary plate 74, and a second driving motor 78 is connected to the rotary shaft 77. The magnet 75 is embedded inside the rotating disc 74, the rotating disc 74 is sleeved on the rotating shaft 77 and fixed on the base 72 through a sleeve and a bearing, and the other end of the rotating shaft 77 is connected with the second driving motor 78 through a coupler. In this embodiment, the magnetic field strength of the magnet 75 may be selected according to the particle size of the composite particles and the magnetic properties of the magnetic particles; the magnets 75 are simple and easily obtained strip magnets 75, and a plurality of groups of strip magnets 75 are uniformly distributed in the rotating disc 74 in a homopolar divergence mode. In this embodiment, the second driving motor 78 drives the rotating disc 74 to rotate, so as to form a rotating magnetic field, so that the magnetic composite particles are separated from the non-magnetic composite particles under the action of the rotating magnetic field: the composite particle powder enters the four-way pipeline 73 through the material conveying opening 71, nonmagnetic composite particles in the composite particle powder can vertically fall under the action of self gravity and are discharged through the first interface 731, magnetic composite particles enter the branch pipeline due to attraction of the magnet 75 in the rotating disk 74 and rotation of the magnet 75, the composite particles entering the branch pipeline slide down along the branch pipeline under the action of gravity, and secondary screening is carried out at the filter screen 76.
The composite particles slide down in the branch pipelines only by means of gravity, so that the screening efficiency is low, the branch pipelines are prone to being blocked, the vibrating motor 79 is installed at the bottom of the outer wall of the four-way pipeline 73, and the vibrating motor 79 is arranged between the first outlet 732 and the second outlet 733. The composite particles entering the branch pipeline slide down along the pipeline under the action of gravity and the vibration motor 79, and are screened for the second time by the filter screen 76; the arrangement of the vibration motor 79 can effectively prevent the blockage of the composite particles in the four-way pipeline 73, and the high efficiency of the composite particle filtration can be ensured.
Example two
This embodiment is an embodiment of the method for preparing composite particles for polishing according to the present invention, in which the magnetic particles in this embodiment are carbonyl iron powder, and the particle size is in the micron order; the grinding material is diamond micropowder with particle size of submicron level. The embodiment comprises the following steps:
s10, measuring 400ml of carbonyl iron powder with the particle size of 3 micrometers and 400ml of improved ultraviolet curing adhesive (Ailete 3342) which are uniformly mixed in equal volume, adding the first mixed solution into a first spraying mechanism 2, measuring 400ml of diamond micropowder with the particle size of 0.5 micrometers and 400ml of improved ultraviolet curing adhesive (Ailete 3342) which are uniformly mixed in equal volume, adding a second mixed solution into a second spraying mechanism 3, fixing the first spraying mechanism 2 and the second spraying mechanism 3 on a high-pressure bottle bracket by adopting a clamping structure, adjusting and opening an air pump, an ultraviolet lamp and a first driving motor 54, simultaneously installing a scraper 61 on a bearing plate 63, adjusting the distance between the scraper 61 and a conveyor belt 53 by a feeding bolt 62, and fastening the scraper 61 on a base 1 by a fastening bolt 66;
s20, turning on an air pump, a first driving motor 54 and an ultraviolet lamp, adjusting the rotating speed of the first driving motor 54 to be 2r/s, after the air pressure is stable, turning on switches of the first spraying mechanism 2, the second spraying mechanism 3 and the spiral nozzle 41 in sequence, extruding a first mixed solution in the first spraying mechanism 2 and a second mixed solution in the second spraying mechanism 3 under the action of the air pressure, enabling the first mixed solution and the second mixed solution to enter a spiral structure of the spiral nozzle 41, fully mixing the first mixed solution and the second mixed solution, and then spraying the mixed solution onto a conveying belt 53 below through the nozzles;
s30, after the mixed liquid is sprayed on the conveyor belt 53 through the spiral nozzle 41, the mixed liquid is continuously irradiated by ultraviolet light in the conveying process of the conveyor belt 53, the ultraviolet light curing adhesive is rapidly cured due to the irradiation of the ultraviolet light, the mixed liquid is cured to form a composite particle group, and the composite particle group is scraped off by the scraper 61 when moving to the scraping mechanism 6;
s40, collecting the scraped composite particle clusters, and performing ball milling and stirring in a ball milling mechanism for 25 minutes to form composite particle powder; the ball milling mechanism in the embodiment is a high-speed ball mill;
s50, six strip magnets 75 with the magnetic field intensity of 4000GS are selected to be annularly arranged on the rotating disc 74 at the same angle with the magnetic poles, and the second driving motor 78 and the vibrating motor 79 are started. Slowly pouring the ball-milled composite particle powder into a material conveying port 71 of a four-way pipeline 73, enabling the nonmagnetic composite particles to fall vertically without being influenced by a magnet 75 and to be output from a first outlet 732, and enabling the nonmagnetic composite particles to enter a branch pipeline under the action of the magnet 75; under the action of gravitational potential energy and the vibration motor 79, the magnetic composite particles slide along the branch pipeline, secondary screening is performed when the magnetic composite particles pass through the filter screen 76, the magnetic composite particles with overlarge particle sizes continuously slide and are discharged from the third outlet 734, and preparation and screening of the composite particles are completed.
Through the steps, the magnetic particles and the abrasive are compounded into the composite particles, the composite particles in a set size range can be rapidly screened, and the problem of low polishing efficiency caused by insufficient abrasive binding force in polishing is effectively solved.
EXAMPLE III
This example is an example of the method for preparing the composite particles for polishing according to the present invention, and is similar to the second example, except that the magnetic particles in this example have a submicron particle size, and the abrasive has a nanoscale particle size. The embodiment comprises the following steps:
s10, measuring 500ml of carbonyl iron powder with the grain size of 1 micron and 500ml of improved ultraviolet curing adhesive (Ailte 3525) which are uniformly mixed in the same volume, adding the first mixed liquid into a first spraying mechanism 2, measuring 400ml of diamond micropowder with the grain size of 50 nanometers and 400ml of improved ultraviolet curing adhesive (Ailte 3525) which are uniformly mixed to form a second mixed liquid, adding the second mixed liquid into a second spraying mechanism 3, fixing the first spraying mechanism 2 and the second spraying mechanism 3 on a high-pressure bottle bracket by adopting a clamping structure, adjusting and opening an air pump, an ultraviolet lamp and a first driving motor 54, simultaneously installing a scraper 61 on a bearing plate 63, adjusting the distance between the scraper 61 and a conveyor belt 53 by using a feeding bolt 62, and fastening the scraper 61 on a base 1 by using a fastening bolt 66;
s20, turning on an air pump, a first driving motor 54 and an ultraviolet lamp, adjusting the rotating speed of the first driving motor 54 to be 1.5r/s, after the air pressure is stable, turning on switches of a first spraying mechanism 2, a second spraying mechanism 3 and a spiral nozzle 41 in sequence, extruding a first mixed solution in the first spraying mechanism 2 and a second mixed solution in the second spraying mechanism 3 under the action of the air pressure, enabling the first mixed solution and the second mixed solution to enter a spiral structure of the spiral nozzle 41, fully mixing the first mixed solution and the second mixed solution, and then spraying the mixed solution onto a conveying belt 53 below through the nozzles;
s30, after the mixed liquid is sprayed on the conveyor belt 53 through the spiral nozzle 41, the mixed liquid is continuously irradiated by ultraviolet light in the conveying process of the conveyor belt 53, the ultraviolet light curing adhesive is rapidly cured due to the irradiation of the ultraviolet light, the mixed liquid is cured to form a composite particle group, and the composite particle group is scraped off by the scraper 61 when moving to the scraping mechanism 6;
s40, collecting the scraped composite particle clusters, and performing ball milling and stirring in a ball milling mechanism for 20 minutes to form composite particle powder; the ball milling mechanism in the embodiment is a high-speed ball mill;
s50, six strip magnets 75 with the magnetic field intensity of 2500GS are selected to be annularly arranged on the rotating disc 74 at the same angle with the same magnetic pole, and the second driving motor 78 and the vibrating motor 79 are started. Slowly pouring the ball-milled composite particle powder into a material conveying port 71 of a four-way pipeline 73, enabling the nonmagnetic composite particles to fall vertically without being influenced by a magnet 75 and to be output from a first outlet 732, and enabling the nonmagnetic composite particles to enter a branch pipeline under the action of the magnet 75; under the action of gravitational potential energy and the vibration motor 79, the magnetic composite particles slide along the branch pipeline, secondary screening is performed when the magnetic composite particles pass through the filter screen 76, the magnetic composite particles with overlarge particle sizes continuously slide and are discharged from the third outlet 734, and preparation and screening of the composite particles are completed.
Through the steps, the magnetic particles and the abrasive are compounded into the composite particles, the composite particles in a set size range can be rapidly screened, and the problem of low polishing efficiency caused by insufficient abrasive binding force in polishing is effectively solved.
Example four
This example is similar to the second example except that ferroferric oxide is used as the magnetic particles and alumina is used as the abrasive. The embodiment comprises the following steps:
s10, measuring 400ml of first mixed liquid formed by isovolumically mixing ferroferric oxide with the grain diameter of 3 micrometers and 400ml of improved ultraviolet curing adhesive (Ailete CA380) and adding the first mixed liquid into a first spraying mechanism 2, measuring 400ml of second mixed liquid formed by isovolumically mixing aluminum oxide micro powder with the grain diameter of 0.5 micrometers and 400ml of improved ultraviolet curing adhesive (Ailete CA380) and adding the second mixed liquid into a second spraying mechanism 3, fixing the first spraying mechanism 2 and the second spraying mechanism 3 on a high-pressure bottle bracket by adopting a clamping structure, adjusting and turning on an air pump, an ultraviolet lamp and a first driving motor 54, simultaneously installing a scraper 61 on a bearing plate 63, adjusting the distance between the scraper 61 and a conveyor belt 53 by a feeding bolt 62, and fastening the scraper 61 on a base 1 by a fastening bolt 66;
s20, turning on an air pump, a first driving motor 54 and an ultraviolet lamp, adjusting the rotating speed of the first driving motor 54 to be 1.5r/s, after the air pressure is stable, turning on switches of a first spraying mechanism 2, a second spraying mechanism 3 and a spiral nozzle 41 in sequence, extruding a first mixed solution in the first spraying mechanism 2 and a second mixed solution in the second spraying mechanism 3 under the action of the air pressure, enabling the first mixed solution and the second mixed solution to enter a spiral structure of the spiral nozzle 41, fully mixing the first mixed solution and the second mixed solution, and then spraying the mixed solution onto a conveying belt 53 below through the nozzles;
s30, after the mixed liquid is sprayed on the conveyor belt 53 through the spiral nozzle 41, the mixed liquid is continuously irradiated by ultraviolet light in the conveying process of the conveyor belt 53, the ultraviolet light curing adhesive is rapidly cured due to the irradiation of the ultraviolet light, the mixed liquid is cured to form a composite particle group, and the composite particle group is scraped off by the scraper 61 when moving to the scraping mechanism 6;
s40, collecting the scraped composite particle clusters, and performing ball milling and stirring in a ball milling mechanism for 30 minutes to form composite particle powder; the ball milling mechanism in the embodiment is a high-speed ball mill;
s50, six strip magnets 75 with the magnetic field intensity of 3500GS are selected to be annularly arranged on the rotating disk 74 at the same angle with the magnetic poles, and the second driving motor 78 and the vibrating motor 79 are started. Slowly pouring the ball-milled composite particle powder into a material conveying port 71 of a four-way pipeline 73, enabling the nonmagnetic composite particles to fall vertically without being influenced by a magnet 75 and to be output from a first outlet 732, and enabling the nonmagnetic composite particles to enter a branch pipeline under the action of the magnet 75; under the action of gravitational potential energy and the vibration motor 79, the magnetic composite particles slide along the branch pipeline, secondary screening is performed when the magnetic composite particles pass through the filter screen 76, the magnetic composite particles with overlarge particle sizes continuously slide and are discharged from the third outlet 734, and preparation and screening of the composite particles are completed.
Through the steps, the magnetic particles and the abrasive are compounded into the composite particles, the composite particles in a set size range can be rapidly screened, and the problem of low polishing efficiency caused by insufficient abrasive binding force in polishing is effectively solved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The preparation device of the composite particles for polishing is characterized by comprising a base (1), a first spraying mechanism (2), a second spraying mechanism (3), a mixing and dispersing mechanism (4), a conveying mechanism (5), a scraping mechanism (6) for scraping composite particle clusters, a ball milling mechanism for processing the composite particle clusters to composite particle powder and a screening mechanism (7) for screening the composite particles within a set size range, wherein the first spraying mechanism (2), the second spraying mechanism (3), the mixing and dispersing mechanism (4) and the conveying mechanism (5) are fixedly arranged on the base (1); the magnetic particle spraying device is characterized in that magnetic particles coated with a binder on the surface are contained in the first spraying mechanism (2), abrasive materials coated with the binder on the surface are contained in the second spraying mechanism (3), the mixing and dispersing mechanism (4) is provided with an input end communicated with the first spraying mechanism (2) and the second spraying mechanism (3) and an output end arranged above the conveying mechanism (5), and the conveying mechanism (5) is provided with a curing mechanism (8) for creating a curing condition of the binder along the way; scrape the end that conveying mechanism (5) were located in mechanism (6), ball-milling mechanism is equipped with the input port of inputing compound granule group and exports the delivery outlet of exporting compound granule powder, screening mechanism (7) are equipped with defeated material mouth (71) of inputing compound granule powder.
2. The apparatus for preparing composite particles for polishing according to claim 1, wherein the first spraying mechanism (2) and the second spraying mechanism (3) are high-pressure bottles capable of being connected with an air pump, the input end of the mixing and dispersing mechanism (4) is connected with a three-way valve (21), the first spraying mechanism (2) and the second spraying mechanism (3) are respectively connected with two interfaces of the three-way valve (21) through pipelines, and the pipelines are provided with single-communication switches (22).
3. The apparatus for producing composite particles for polishing according to claim 2, wherein said mixing and dispersing mechanism (4) is provided with a spiral nozzle (41) connected to a three-way valve (21), and a spiral flow path (42) is provided in said spiral nozzle (41).
4. The apparatus for preparing composite particles for polishing according to claim 1, wherein the conveying mechanism (5) comprises a first pulley (51), a second pulley (52) and a conveyor belt (53), the conveyor belt (53) is wound around the outer edges of the first pulley (51) and the second pulley (52), and the first pulley (51) is connected with a first driving motor (54); and a lubricating belt wheel (55) is arranged on the outer surface of the conveying belt (53) in a contact manner.
5. The apparatus for preparing composite particles for polishing according to claim 1, wherein the binder is an ultraviolet-curable binder, and the curing means (8) is an ultraviolet lamp with adjustable intensity.
6. The apparatus for preparing composite particles for polishing according to claim 1, wherein the scraping mechanism (6) comprises a scraper (61), a feeding bolt (62), a bearing plate (63) disposed on the base (1), and a material receiving plate (64) disposed below the scraper (61), the scraper (61) is fixedly mounted on the bearing plate (63), and the bearing plate (63) is connected with the base (1) through the feeding bolt (62).
7. The apparatus for preparing composite particles for polishing according to any one of claims 1 to 6, wherein the sieving mechanism (7) comprises a base (72), a four-way pipe (73) fixed to the base (72), and a rotating disk (74) having a magnet (75) built therein, the four-way pipe (73) is provided with a first port (731) connected to the feed port (71), a first outlet (732) for outputting nonmagnetic composite particles, a second outlet (733) for outputting composite particles within a predetermined size range, and a third outlet (734) for outputting composite particles outside the predetermined size range, the first outlet (732) is provided directly below the first port (731), and the second outlet (733) is provided with a sieving screen (76); the rotary disc (74) is arranged on the side of the first interface (731), a rotary shaft (77) is arranged at the center of the rotary disc (74), and the rotary shaft (77) is connected with a second driving motor (78).
8. The apparatus according to claim 7, wherein a vibration motor (79) is installed on an outer wall of the four-way pipe (73), and the vibration motor (79) is disposed between the first outlet (732) and the second outlet (733).
9. The apparatus for preparing composite particles for polishing as set forth in claim 7, wherein the magnets (75) are bar magnets (75), the plurality of groups of magnets (75) are provided in the rotating disk (74), and the plurality of groups of magnets (75) are uniformly distributed in a homopolar divergent manner.
10. A method for preparing composite particles for polishing is characterized by comprising the following steps:
s10, selecting magnetic particles, an abrasive and an ultraviolet light curing adhesive, adding a first mixed solution formed by uniformly mixing the magnetic particles and the ultraviolet light curing adhesive into a first spraying mechanism (2), and adding a second mixed solution formed by uniformly mixing the abrasive and the ultraviolet light curing adhesive into a second spraying mechanism (3);
s20, under the action of an air pump, extruding the first mixed liquid and the second mixed liquid in the step S10 into a spiral nozzle (41), fully mixing the first mixed liquid and the second mixed liquid to form a third mixed liquid, and spraying the third mixed liquid onto a conveyor belt (53);
s30, irradiating the third mixed solution in the step S20 by an ultraviolet light in the conveying process on the conveying belt (53), quickly curing the ultraviolet curing adhesive to form a composite particle group, and scraping the composite particle group by a scraper (61) when the composite particle group moves to the scraping mechanism (6);
s40, transferring the composite particle clusters in the step S30 to a ball milling mechanism for ball milling and stirring to form composite particle powder;
s50, the composite particle powder in the step S40 enters a screening mechanism (7) through a material conveying opening (71), nonmagnetic composite particles are output through a first outlet (732), composite particles within a set size range are output through a second outlet (733), and composite particles beyond the set size range are output through a third outlet (734).
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