CN115193305A - Three-dimensional mixing device and method for metal powder - Google Patents
Three-dimensional mixing device and method for metal powder Download PDFInfo
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- CN115193305A CN115193305A CN202210837905.9A CN202210837905A CN115193305A CN 115193305 A CN115193305 A CN 115193305A CN 202210837905 A CN202210837905 A CN 202210837905A CN 115193305 A CN115193305 A CN 115193305A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
- B01F29/401—Receptacles, e.g. provided with liners
- B01F29/4011—Receptacles, e.g. provided with liners characterised by the shape or cross-section of the receptacle, e.g. of Y-, Z -, S -, or X shape
- B01F29/40116—Spherical shapes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
- B01F29/401—Receptacles, e.g. provided with liners
- B01F29/402—Receptacles, e.g. provided with liners characterised by the relative disposition or configuration of the interior of the receptacles
- B01F29/4022—Configuration of the interior
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/50—Mixers with shaking, oscillating, or vibrating mechanisms with a receptacle submitted to a combination of movements, i.e. at least one vibratory or oscillatory movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
- B01F35/42—Clamping or holding arrangements for mounting receptacles on mixing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention relates to the technical field of powder metallurgy, in particular to a three-dimensional metal powder mixing device and a three-dimensional metal powder mixing method, which comprise a mixing ball tank, a driving wheel, a universal ball converter, an ultrasonic vibrator and a supporting mechanism, wherein the mixing ball tank is arranged as a ball tank body, the ball tank body is arranged on a supporting frame and is dragged by a driving wheel in three directions to perform complex space three-dimensional motion, the powder in the ball tank is uniformly mixed under the dispersion action of a dispersing device, the ultrasonic vibrator on the supporting frame is matched to accelerate the fusion process in the falling process of the powder, the powder can be efficiently mixed, the mixing ball tank can be arranged as a single tank body or the combination of a plurality of tank bodies, the whole body after combination is still the ball tank body, the requirement of mixing single metal powder or the requirement of simultaneously mixing multiple metal powders can be met, the three-dimensional metal powder mixing device is particularly suitable for the application verification stage of the powder with small mixing amount but multiple types, and the time required by the test can be greatly reduced.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a three-dimensional mixing device and a mixing method for metal powder.
Background
Powders that are practically used in the fields of additive manufacturing, powder metallurgy, and the like are generally mixed with one kind of powder or two or more kinds of powders, and the core of the mixing is to obtain an alloy powder having a uniform composition and a uniform particle size distribution.
In the prior art, metal powder mixing equipment mainly comprises a V-shaped mixing bin, a biconical mixing bin and a roller-type mixing bin, wherein the mixing bin only rotates periodically under the belt of a main rotating mechanism, so that the metal powder is mixed. In the material mixing process, the material mixing is carried out only by the gathering and dispersing processes of the powder, the movement track of the powder is single, the efficiency is low, and the improved three-dimensional material mixing machine can rotate in a three-dimensional space as described in the invention patent CN206121626U, but the movement track is single relatively, the efficiency improvement is not high, and the whole rotation transmission mechanism is complex and expensive.
And no matter compounding equipment specification size, can only mix the powder of a specification once, still need clear up after mixing, especially during powder application verifies, often need mix the powder of multiple specification simultaneously so that carry out the gradient experiment, the required powder consumption is few but expends time longer, and current blendor all can not satisfy the purpose of quick verification, high-efficient mixing.
Aiming at the technical defects, the metal powder mixer which can mix various specifications simultaneously and has simple movement structure, complex space three-dimensional movement track and stable operation is provided.
Disclosure of Invention
The invention provides a three-dimensional mixing device for metal powder, which comprises:
the mixing spherical tank comprises a lower tank body and an upper tank cover which can be mutually sealed in a covering manner, a containing cavity for containing metal powder is arranged in the mixing spherical tank, and a dispersing structure for dispersing the powder is arranged in the containing cavity;
the driving wheel is arranged on the side wall of the mixing spherical tank and is used for driving the mixing spherical tank to rotate;
the universal ball converter is positioned at the lower end of the mixing spherical tank and is used for supporting the mixing spherical tank to rotate;
the supporting frame is arranged below the mixing spherical tank, the top of the supporting frame is provided with the universal ball converter, and the bottom of the supporting frame is fixedly provided with the base;
the ultrasonic vibrator is fixedly arranged on one end, close to the universal ball converter, of the outer side wall of the support frame;
wherein, the setting of compounding spherical tank is the spheroid, the drive wheel sets up including the laminating X of compounding spherical tank week lateral wall is to drive wheel, Y to drive wheel and Z to the drive wheel to be used for driving respectively the compounding spherical tank is along X to, Y to, Z to rotating, universal ball converter sets up to more than three and distributes in same horizontal plane.
Preferably, the dispersion structure comprises a lattice topology structure consisting of a plurality of rods with circular, rectangular or rhombic cross sections.
Preferably, the lattice topology comprises a diamond structure.
Preferably, a sealing ring is arranged between the lower tank body and the upper tank cover.
Preferably, the upper tank cover is provided with a vacuum interface for vacuumizing the material mixing spherical tank after being covered and sealed, and the vacuum interface is provided with a detachable sealing cover.
Preferably, the mixing spherical tank comprises a group of lower tank body and upper tank cover, and the lower tank body and the upper tank cover are mutually covered to form a sealed sphere.
Preferably, the compounding spherical tank includes more than one set of lower jar of body and last cover, and the lid closes the back lower jar of body, go up the cover and be central symmetry and install on the supporting rack, correspond every group on the supporting rack lower jar of body, last cover all install detachable spacing lid, be used for with lower jar of body, last cover are fixed on the supporting rack, it is a plurality of spacing lid is installed constitute the spheroid with lower jar of body, last cover on the supporting rack.
Preferably, the mixing spherical tank comprises 2-12 groups of the lower tank body and the upper tank cover which are distributed in a central symmetry manner.
Preferably, the top of the support frame is provided with a wedge surface inclined inwards, and the universal ball converter is installed on the surface of the wedge surface in a threaded manner.
Preferably, the universal ball converter comprises a universal ball seat, a universal ball rotatably mounted on the top of the universal ball seat, and a screw fixedly mounted on the bottom of the universal ball seat, wherein the screw is threadedly mounted on the surface of the wedge surface and used for adjusting the height of the universal ball.
Preferably, 3-12 universal ball converters are arranged on the surface of the wedge surface in an array mode, and the universal balls are distributed in the same horizontal plane.
Preferably, the included angle between the straight line where the center of the mixing spherical tank and the contact points of the universal ball and the mixing spherical tank are located and the horizontal plane is +/-30 degrees to +/-60 degrees
Preferably, the outer side wall of the support frame is fixedly provided with the ultrasonic vibrators corresponding to the number and the positions of the universal ball converters.
Preferably, six groups of foundation bolts which are distributed in a central symmetry manner are installed on the periphery of the bottom of the base, and the base is fixed on the ground through the foundation bolts.
The invention provides another scheme, and a metal powder mixing method using the metal powder three-dimensional mixing device comprises the following steps:
step S1, filling metal powder: opening the lower tank body and the upper tank cover, filling metal powder into the lower tank body provided with the dispersion structure, wherein the powder loading capacity is 1/3-1/2 of the volume of the mixing spherical tank, then sealing and covering the upper tank cover on the lower tank body, vacuumizing the mixing spherical tank to a micro positive pressure of 0.05-0.15 MPa through a vacuum interface on the upper tank cover, and filling inert protective gas into the mixing spherical tank to prevent the metal powder in the mixing spherical tank from being oxidized in the mixing process;
s2, debugging a supporting mechanism: selecting a proper number of universal ball converters according to the weight of the mixing spherical tank, installing the universal ball converters on the top of the support frame in a central symmetry manner, keeping the universal balls on the universal ball converters in the same plane, and then placing the mixing spherical tank on the universal ball converters;
step S3, mixing materials: three groups of driving wheels with different driving directions arranged on the outer wall of the peripheral side of the mixing spherical tank drive the mixing spherical tank to rotate in an independent control mode, a mixed control mode or a random control mode, and the rotating speed of the mixing spherical tank 1 is controlled to be 5-20 r/min;
the independent control mode is that the X-direction driving wheel, the Y-direction driving wheel and the Z-direction driving wheel rotate for corresponding time in sequence;
the hybrid control mode is that the X-direction driving wheel, the Y-direction driving wheel and the Z-direction driving wheel simultaneously rotate at the same speed or at different speeds;
the random control mode is a combination of the two modes, and the mixing time is more than 15 min.
Compared with the prior art, the invention has the advantages that:
1. the material mixing tank provided by the invention is arranged as a spherical tank body, the spherical tank body is arranged on a support frame and is dragged by a driving wheel in three directions to perform complex space three-dimensional motion, powder in the spherical tank is uniformly mixed under the dispersion action of a dispersion device, and an ultrasonic vibrator on the support frame is matched to accelerate the fusion process in the falling process of the powder, so that the powder can be efficiently mixed.
2. The material mixing spherical tank can be set as a single tank body or a combination of a plurality of tank bodies, the whole body after combination is still the spherical tank body, the requirement of mixing single metal powder or mixing multiple metal powders simultaneously can be met, the material mixing spherical tank is particularly suitable for the powder application verification stage with less mixing amount but more types, different powders can be independently mixed in a plurality of different tank bodies simultaneously, and the time required by the test can be greatly reduced.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic front view of a three-dimensional metal powder mixing device according to an embodiment of the present invention;
FIG. 2 is a schematic top structure view of a support frame in a three-dimensional metal powder mixing device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a mixing ball tank in a three-dimensional metal powder mixing device according to an embodiment of the present invention;
FIG. 4 is a schematic view of another structure of a mixing ball tank in the three-dimensional metal powder mixing device according to the embodiment of the invention;
fig. 5 is a schematic partial structure view of a dispersing structure in a three-dimensional metal powder mixing device according to an embodiment of the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
The invention provides a three-dimensional metal powder mixing device, which mainly aims at mixing metal powder in the fields of additive manufacturing, powder metallurgy and the like, aims at improving the mixing speed, and can greatly reduce the time required by a test especially in a verification stage of powder application with small mixing amount.
As shown in fig. 1, the three-dimensional mixing device for metal powder mainly includes: mixing spherical tank 1, drive wheel 2, universal ball converter 3, support frame 4, ultrasonic vibrator 5 and base 6.
[ MIXING BALL POT 1 ]
Wherein, compounding spherical tank 1 is including closing sealed lower jar of body 11 and last lid 12 each other, and 304 stainless steel can be chooseed for use to the material of compounding spherical tank 1, and the ball footpath is 20cm ~ 100cm, and the wall thickness is greater than 3mm, and roughness Ra is 3 ~ 10 mu m, and inside has the appearance chamber that holds metal powder, holds the intracavity and installs the dispersion structure 13 that is used for the dispersion powder, and dispersion structure 13 includes the dot matrix topological structure that many cross-sections are circular, rectangle or rhombus pole is constituteed.
Referring to fig. 5, in a specific embodiment, the dispersing structure 13 is a filler block having blocking and passing effects on the powder, and is a lattice topology structure expanded by a diamond structure and formed by 304 stainless steel rods with a circular cross section, the length of each stainless steel rod is 3-15 mm, and the gap interval is 20-50 mm, so that the metal powder can be effectively dispersed.
Furthermore, in order to ensure that the covered mixing ball tank 1 has good sealing performance, a sealing ring 15 is arranged between the lower tank body 11 and the upper tank cover 12.
Aiming at some metal powder which is easy to oxidize and needs to be protected, a vacuum interface 121 is arranged on the upper tank cover 12, and a detachable sealing cover 14 is arranged on the vacuum interface 121. A vacuum suction pipe can be inserted into the vacuum port 121 for vacuumizing the mixing spherical tank 1 after being covered and sealed to a micro-positive pressure of 0.05-0.15 MPa, wherein the conventional atmospheric pressure is 101kpa (namely 0.1 MPa), which is equivalent to completely pumping out the air in the mixing spherical tank 1 (ideally-101 kpa), then filling the mixing spherical tank 1 with inert gas which is slightly higher than the atmospheric pressure and is suitable for preventing air from entering, so that the air pressure is set to be 0.05-0.15 MPa (50-150 kpa), and then filling the mixing spherical tank with inert protective gas to prevent the metal powder in the mixing spherical tank 1 from being oxidized in the mixing process.
In a preferred embodiment, the reserved vacuum port 121 is a port for vacuumizing and filling inert gas, and is also a reserved hoisting hole, so that the mixing spherical tank 1 is conveniently hoisted and moved.
[ Driving wheel 2 ]
The driving wheel 2 is arranged on the side wall of the mixing spherical tank 1 and is used for driving the mixing spherical tank 1 to rotate.
Further, the driving wheel 2 comprises an X-direction driving wheel 21, a Y-direction driving wheel 22 and a Z-direction driving wheel 23 which are attached to the circumferential side wall of the mixing spherical tank 1 and are respectively used for driving the mixing spherical tank 1 to rotate along the X direction, the Y direction and the Z direction.
In a specific embodiment, the rotating speed of the mixing spherical tank 1 drawn by the driving wheel 2 is 5-20 r/min, and the control modes of the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 comprise an individual control mode, a mixed control mode and a random control mode, so that the complex and various actual spatial motion tracks of the mixing spherical tank 1 are ensured.
The single control mode is that the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 rotate for corresponding time in sequence, the mixed control mode is that the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 rotate at the same speed or at different speeds, the random control mode is that the two modes are combined, and the material mixing time is over 15 min.
[ SUPPORT MECHANISM ]
The supporting mechanism comprises a universal ball converter 3, a supporting frame 4 and a base 6.
Wherein, universal ball converter 3 is located the lower extreme of compounding spherical tank 1 for support compounding spherical tank 1 and rotate, support frame 4 sets up in the below of compounding spherical tank 1, and the top installs universal ball converter 3, bottom fixed mounting base 6.
Referring to fig. 1 and 2, the top of the support frame 4 is provided with a wedge surface 41 inclined inward, the universal ball converters 3 are screwed on the surface of the wedge surface 41, and the universal ball converters 3 are arranged in more than three numbers and distributed in the same horizontal plane to support the mixing ball tank 1.
Further, universal ball converter 3 includes universal ball seat 31, rotate universal ball 32 and the screw 33 of fixed mounting in universal ball seat 31 bottom at universal ball seat 31 top, the surface at wedge face 41 is installed to screw 33 spiro union, and the distance that can pass through rotatory screw 33 screw in, adjust the height that universal ball 32 located, make a plurality of universal balls 32 distribute in same horizontal plane, a plurality of universal balls 32 all play the supporting role to compounding spherical tank 1, make the stress of compounding spherical tank 1 balanced, the rotation process is more stable.
In a preferred embodiment, 3 to 12 universal ball converters 3 are arranged on the surface of the wedge surface 41 in an array, the included angle between the horizontal plane and the straight line where the center of the mixing ball tank 1 and the contact point of the universal ball 32 and the mixing ball tank 1 are located is +/-30 degrees to +/-60 degrees, and the corresponding data can be selected according to the weight of the mixing ball tank 1.
Further, in order to make the base 6 stable enough, six groups of anchor bolts 61 are installed on the periphery of the bottom of the base 6, and the base 6 is fixed on the ground through the anchor bolts 61, so that the stability of the base 6 is ensured, and the support frame 4 and the universal ball converter 3 on the upper side are also kept stable.
[ ultrasonic vibrator 5 ]
As shown in fig. 1 and 2, the ultrasonic vibrator 5 is fixedly disposed on an end of an outer side wall of the support frame 4 near the universal ball converter 3.
In a specific embodiment, the power of the ultrasonic vibrators 5 is 0.05kw to 1kw, the frequency is 20kHz to 100kHz, and the ultrasonic vibrators 5 corresponding to the number and the positions of the universal ball transducers 3 are fixedly arranged on the outer side wall of the support frame 4.
In the specific embodiment shown in fig. 3, the mixing bowl 1 comprises a set of lower bowl 11 and upper bowl 12, and the lower bowl 11 and the upper bowl 12 are closed to each other to form a sealed bowl.
Wherein, 304 stainless steel is selected for use to the material of compounding spherical tank 1, the ball footpath of compounding spherical tank 1 is 30cm, wall thickness 3mm, surface roughness Ra is 3.2 mu m, sphericity 0.99, through the vacuum interface 121 who reserves, evacuation and full of inert gas to pressure-fired pressure 0.1MPa, the powder loading is 1/2 of compounding spherical tank 1 volume, inside dispersion structure 13 also adopts 304 stainless steel bright structure, the length of stainless steel pole sets up to 5mm, the hole interval is 25mm, dot matrix topological structure can be the diamond structure.
Further, the rotating speed of the mixing ball tank 1 drawn by the driving wheel 2 is set to be 18r/min, the control mode of the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 is a random mode, the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 randomly rotate for 5-10 turns in one direction, the changing direction is rotated, and the mixing time is 45min.
Further, the number of the universal ball converters 3 is three according to the total weight of the mixing spherical tank 1, the universal ball converters are uniformly arrayed on the inner side of the wedge surface 41 at the top of the support frame 4, and the included angle between the straight line of the center of the mixing spherical tank 1 and the contact points of the universal ball 32 and the mixing spherical tank 1 and the horizontal plane is +/-60 degrees.
Furthermore, the power of the ultrasonic vibrators 5 is 0.1kw, the frequency is 40kHz, three ultrasonic vibrators are arranged, and the three ultrasonic vibrators are all located below the universal ball converter 3, so that the vibration transmission effect is improved.
In another embodiment, as shown in fig. 4, the mixing ball tank 1 includes four sets of lower tank 11 and upper tank 12, the closed lower tank 11 and upper tank 12 are installed on a supporting frame 16 in a central symmetry manner, the supporting frame 16 is a regular quadrangular pyramid and has four installation spaces in a central symmetry manner for installing the lower tank 11 and the upper tank 12, a detachable limit cover 17 is installed on the supporting frame 16 corresponding to each set of the lower tank 11 and the upper tank 12 for fixing the lower tank 11 and the upper tank 12 on the supporting frame 16, and a plurality of limit covers 17 are installed on the supporting frame 16 to form a ball with the lower tank 11 and the upper tank 12.
Wherein, the material of lower jar of body 11, upper tank cover 12, supporting rack 16 and spacing lid 17 all chooses 304 stainless steel for use, the ball footpath of compounding spherical tank 1 is 80cm, the wall thickness is 5mm, surface roughness Ra is 3.2 mu m, sphericity 0.99, through the vacuum interface 121 who reserves, evacuation and full inert gas to pressure-fired pressure 0.1MPa, the powder loading is 1/3 of compounding spherical tank 1 volume, inside dispersion structure 13 also adopts 304 stainless steel bright structure, the length of stainless steel pole sets up to 5mm, the hole interval is 40mm, the lattice topology can be the diamond structure.
Further, the rotating speed of the mixing ball tank 1 drawn by the driving wheel 2 is set to be 10r/min, the control mode of the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 is a random mode, the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 randomly rotate for 15-20 circles in one direction, the changing direction is rotated, and the mixing time is 1h.
Further, the number of the universal ball converters 3 is six according to the total weight of the mixing spherical tank 1, the universal ball converters are uniformly arrayed on the inner side of the wedge surface 41 at the top of the support frame 4, and the included angle between the straight line of the center of the mixing spherical tank 1 and the contact points of the universal ball 32 and the mixing spherical tank 1 and the horizontal plane is +/-30 degrees.
Furthermore, the power of the ultrasonic vibrator 5 is 0.5kw, the frequency is 100kHz, six ultrasonic vibrators are arranged, and the six ultrasonic vibrators are all located below the universal ball converter 3, so that the vibration transmission effect is improved.
So, compounding spherical tank 1 can set up to the combination of single jar of body or a plurality of jar of bodies, and the whole after the combination still is the spherical jar of body, can satisfy the requirement that single metal powder mixes or multiple metal powder mixes simultaneously, is particularly useful for the powder application verification stage that the mixing volume is few but the kind is many, can be simultaneously in the internal independent different powder of mixing of a plurality of different jar, the required time of reduction experiment that can be very big.
[ Metal powder mixing method ]
With reference to the metal powder mixing device of the embodiment shown in fig. 1 to 5, the metal powder mixing method of the embodiment disclosed by the invention comprises the following steps:
step S1, filling metal powder: opening a lower tank body 11 and an upper tank cover 12, filling metal powder into the lower tank body 11 provided with a dispersing structure 13, wherein the powder loading capacity is 1/3-1/2 of the volume of a mixing spherical tank 1, then sealing and covering the upper tank cover 12 on the lower tank body 11, vacuumizing the mixing spherical tank 1 to a micro positive pressure of 0.05-0.15 MPa through a vacuum interface 121 on the upper tank cover 12, and filling inert protective gas into the mixing spherical tank 1 to prevent the metal powder in the mixing spherical tank 1 from being oxidized in the mixing process;
s2, debugging a supporting mechanism: selecting a proper number of universal ball converters 3 according to the weight of the mixing spherical tank 1, installing the universal ball converters 3 on the top of the support frame 4 in a central symmetry manner, keeping the universal balls 32 on the universal ball converters 3 in the same plane, and then placing the mixing spherical tank 1 on the universal ball converters 3;
s3, mixing materials: three groups of driving wheels 2 with different driving directions, which are arranged on the outer wall of the peripheral side of the material mixing spherical tank 1, drive the material mixing spherical tank 1 to rotate in an independent control mode, a mixing control mode or a random control mode, and the rotating speed of the material mixing spherical tank 1 is controlled to be 5-20 r/min.
The independent control mode is that the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 rotate for corresponding time in sequence.
The hybrid control mode is that the X-direction driving wheel 21, the Y-direction driving wheel 22 and the Z-direction driving wheel 23 simultaneously rotate at two same speeds or at different speeds.
The random control mode is a combination of the two modes, and the mixing time is more than 15 min.
Therefore, compared with the conventional mixing mode that the V-shaped mixing bin, the double-cone mixing bin, the roller-shaped mixing bin and the mixing bins thereof only rotate periodically under the drive of the main rotating mechanism, the mixing method provided by the invention adopts the spherical bin, and the spherical bin is driven to mix the powder materials in the spherical bin in multiple directions, multiple angles and different rotating speeds, so that the mixing efficiency of the metal powder is improved.
According to the embodiment, the spherical tank body is arranged on the support frame and performs complex space three-dimensional motion under the traction of the driving wheels in three directions, powder in the spherical tank is uniformly mixed under the dispersing action of the dispersing device, the ultrasonic vibrator on the support frame is matched to accelerate the fusion process in the falling process of the powder, and the powder can be efficiently mixed.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (15)
1. The utility model provides a three-dimensional compounding device of metal powder which characterized in that includes:
the mixing spherical tank (1) comprises a lower tank body (11) and an upper tank cover (12) which can be mutually covered and sealed, a containing cavity for containing metal powder is arranged in the mixing spherical tank, and a dispersing structure (13) for dispersing the powder is arranged in the containing cavity;
the driving wheel (2) is arranged on the side wall of the mixing spherical tank (1) and is used for driving the mixing spherical tank (1) to rotate;
the universal ball converter (3) is positioned at the lower end of the mixing spherical tank (1) and is used for supporting the mixing spherical tank (1) to rotate;
the support frame (4) is arranged below the mixing spherical tank (1), the universal ball converter (3) is installed at the top of the support frame, and the base (6) is fixedly installed at the bottom of the support frame;
the ultrasonic vibrator (5) is fixedly arranged on one end, close to the universal ball converter (3), of the outer side wall of the support frame (4);
wherein, compounding spherical tank (1) sets up and is the spheroid, drive wheel (2) set up including the laminating X of compounding spherical tank (1) week lateral wall is to drive wheel (21), Y to drive wheel (22) and Z to drive wheel (23), and be used for driving respectively compounding spherical tank (1) is followed X to, Y to, Z to rotating, universal ball converter (3) set up to more than three and distribute in same horizontal plane.
2. Three-dimensional mixing device of metal powders according to claim 1, characterized in that said dispersing structure (13) comprises a lattice topology consisting of a plurality of rods with a circular, rectangular or rhombic section.
3. The three-dimensional mixing device of claim 2, wherein the lattice topology comprises a diamond structure.
4. The three-dimensional mixing device of metal powder according to claim 1, characterized in that a sealing ring (15) is installed between the lower pot (11) and the upper pot cover (12).
5. The three-dimensional metal powder mixing device as claimed in claim 1, wherein a vacuum port (121) is formed in the upper tank cover (12) and used for vacuumizing the inside of the mixing spherical tank (1) after the mixing spherical tank (1) is covered and sealed, and a detachable sealing cover (14) is mounted on the vacuum port (121).
6. A three-dimensional mixing device of metal powders according to any of the claims 1 to 5, characterized in that the mixing ball tank (1) comprises a set of the lower tank body (11) and the upper tank cover (12), and the lower tank body (11) and the upper tank cover (12) are mutually covered to form a sealed ball.
7. The three-dimensional metal powder mixing device according to any one of claims 1 to 5, wherein the mixing ball tank (1) comprises more than one set of the lower tank body (11) and the upper tank cover (12), the lower tank body (11) and the upper tank cover (12) which are closed are installed on a support frame (16) in a central symmetry manner, a detachable limit cover (17) is installed on the support frame (16) corresponding to each set of the lower tank body (11) and the upper tank cover (12) and used for fixing the lower tank body (11) and the upper tank cover (12) on the support frame (16), and the limit covers (17) are installed on the support frame (16) to form a ball body with the lower tank body (11) and the upper tank cover (12).
8. The three-dimensional mixing device of metal powder according to claim 7, characterized in that the mixing ball tank (1) comprises 2-12 groups of the lower tank body (11) and the upper tank cover (12) which are distributed in a central symmetry manner.
9. The three-dimensional metal powder mixing device according to claim 1, wherein the top of the support frame (4) is provided with a wedge surface (41) inclined towards the inner side, and the universal ball converter (3) is mounted on the surface of the wedge surface (41) in a threaded manner.
10. The three-dimensional mixing device for metal powder as claimed in claim 9, wherein the universal ball converter (3) comprises a universal ball seat (31), a universal ball (32) rotatably mounted on the top of the universal ball seat (31), and a screw (33) fixedly mounted on the bottom of the universal ball seat (31), wherein the screw (33) is threadedly mounted on the surface of the wedge surface (41) and is used for adjusting the height of the universal ball (32).
11. The three-dimensional mixing device for metal powder as claimed in claim 10, wherein 3-12 said universal ball transducers (3) are arranged on the surface of the wedge surface (41) in an array, and a plurality of said universal balls (32) are distributed in the same horizontal plane.
12. The three-dimensional mixing device of metal powder according to claim 10, characterized in that the included angle between the horizontal plane and the straight line where the center of the mixing spherical tank (1) and the contact point of the universal ball (32) and the mixing spherical tank (1) are located is ± 30 ° to ± 60 °.
13. The three-dimensional mixing device of metal powder according to claim 11, characterized in that the ultrasonic vibrators (5) are fixed on the outer side wall of the supporting frame (4) and the number and the positions of the ultrasonic vibrators correspond to those of the universal ball transducers (3).
14. The three-dimensional metal powder mixing device according to claim 1, wherein six groups of anchor bolts (61) are installed on the periphery of the bottom of the base (6) in a centrosymmetric manner, and the base (6) is fixed on the ground through the anchor bolts (61).
15. A metal powder mixing method based on the metal powder three-dimensional mixing device of claim 1 is characterized by comprising the following steps:
step S1, filling metal powder: opening the lower tank body (11) and the upper tank cover (12), filling metal powder into the lower tank body (11) provided with the dispersing structure (13), wherein the powder loading capacity is 1/3-1/2 of the volume of the mixing spherical tank (1), then sealing and covering the upper tank cover (12) on the lower tank body (11), vacuumizing the mixing spherical tank (1) through a vacuum interface (121) on the upper tank cover (12) to a micro positive pressure of 0.05-0.15 MPa, and then filling inert protective gas into the mixing spherical tank (1) to prevent the metal powder in the mixing spherical tank (1) from being oxidized in the mixing process;
s2, debugging a supporting mechanism: selecting a proper number of universal ball converters (3) according to the weight of the mixing spherical tank (1), installing the universal ball converters (3) on the top of the support frame (4) in a central symmetry manner, keeping the universal balls (32) on the universal ball converters (3) in the same plane, and then placing the mixing spherical tank (1) on the universal ball converters (3);
s3, mixing materials: three groups of driving wheels (2) with different driving directions, which are arranged on the outer wall of the peripheral side of the material mixing spherical tank (1), drive the material mixing spherical tank (1) to rotate in an individual control mode, a mixing control mode or a random control mode, and the rotating speed of the material mixing spherical tank (1) is controlled to be 5-20 r/min;
wherein, the single control mode is that the X-direction driving wheel (21), the Y-direction driving wheel (22) and the Z-direction driving wheel (23) rotate for corresponding time in turn;
the hybrid control mode is that the X-direction driving wheel (21), the Y-direction driving wheel (22) and the Z-direction driving wheel (23) simultaneously rotate at the same speed or at different speeds;
the random control mode is a combination of the two modes, and the mixing time is more than 15 min.
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| JPH0975701A (en) * | 1995-09-11 | 1997-03-25 | Takashi Ichihara | Agitating mixer |
| JPH11128996A (en) * | 1997-11-05 | 1999-05-18 | Motoda Electron Co Ltd | Bacteria mixer |
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| CN115193305B (en) | 2024-09-03 |
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