CN108620587B - Additive manufacturing device for metal particle induction heating and using method thereof - Google Patents

Additive manufacturing device for metal particle induction heating and using method thereof Download PDF

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Publication number
CN108620587B
CN108620587B CN201810474483.7A CN201810474483A CN108620587B CN 108620587 B CN108620587 B CN 108620587B CN 201810474483 A CN201810474483 A CN 201810474483A CN 108620587 B CN108620587 B CN 108620587B
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hole
induction heating
transverse
holes
vertical
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CN108620587A (en
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李时春
肖罡
周振红
邓辉
邓朝晖
苏飞
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/30—Platforms or substrates
    • B22F12/33—Platforms or substrates translatory in the deposition plane
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/22—Direct deposition of molten metal
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/10—Auxiliary heating means
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50—Means for feeding of material, e.g. heads
    • B22F12/58—Means for feeding of material, e.g. heads for changing the material composition, e.g. by mixing
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/70—Gas flow means
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/003—Apparatus, e.g. furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/30—Platforms or substrates
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B22F2003/1053—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by induction
    • 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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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • General Induction Heating (AREA)

Abstract

The utility model provides a metal particle induction heating's vibration material disk device, the on-line screen storage device comprises a base and a transverse plate, first through-hole is all seted up to the transverse plate top surface near left and right sides both ends department, the vertical cylinder of upper end fixed mounting of first through-hole, the hole groove is seted up to the symmetry in the middle of the both ends face about the cylinder, the screw hole is seted up to the cylinder side, set up the second through-hole in the middle of the hole groove bottom surface that is located the upper portion, the second through-hole passes behind the corresponding screw hole and communicates with each other with the hole groove that is located the lower part, the equal fixed mounting feed cylinder in cylinder upper end, all set up the third through-hole in the middle of the feed cylinder bottom face, the third through-hole is. The invention can rapidly and efficiently carry out the mixed additive manufacturing of a plurality of different metals. The invention has simple structure, low manufacturing cost and convenient use.

Description

Additive manufacturing device for metal particle induction heating and using method thereof
Technical Field
The invention belongs to the field of additive manufacturing and rapid prototyping, and particularly relates to an additive manufacturing device for metal particle induction heating and a using method thereof.
Background
The existing method for additive manufacturing of metal materials mainly adopts methods such as laser, electron beam heating, electric arc heating and the like to heat the metal materials, so as to finish rapid forming and additive manufacturing of parts. The existing selective laser sintering additive manufacturing method adopts laser to scan on powder, melts the powder, and repeatedly sinters and forms layer by layer after solidification. In the manufacturing process, the material melting amount in unit time is small, the powder needs to be preheated, and the cost of auxiliary equipment such as a powder bed and the like is high. The laser sintering molding is carried out by adopting a synchronous powder feeding mode, the defects of small material melting amount in unit time, low efficiency and the like exist, most of the existing equipment has high cost, complex structure and inconvenient use.
Disclosure of Invention
The invention provides an additive manufacturing device for metal particle induction heating and a using method thereof, which are used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
a metal particle induction heating additive manufacturing device comprises a base and a transverse plate, wherein first through holes are formed in the top surface of the transverse plate close to the left end and the right end, vertical cylinders are fixedly installed at the upper ends of the first through holes, hole grooves are symmetrically formed in the middles of the upper end surface and the lower end surface of each cylinder, threaded holes are formed in the side surfaces of the cylinders, second through holes are formed in the middles of the bottom surfaces of the hole grooves in the upper portions of the cylinders, the second through holes penetrate through corresponding threaded holes and are communicated with the hole grooves in the lower portions of the cylinders, charging barrels are fixedly installed at the upper ends of the cylinders, third through holes are formed in the middles of the bottom end surfaces of the charging barrels and are coaxial with the central lines of the corresponding hole grooves, vertical feeding motors are fixedly installed in the middles of the tops of the charging barrels, first vertical shafts are fixedly installed at the lower ends of output shafts of the feeding motors, the lower ends of the first vertical shafts penetrate through the, a vertical switch motor is fixedly installed in the middle of the top of the transverse plate, telescopic shafts are symmetrically arranged at the left end and the right end of an output shaft of the switch motor, sleeves are sleeved on thin shafts of the telescopic shafts through bearings, transverse electric telescopic rods are symmetrically arranged at the left side and the right side of the switch motor, fixed rods of the electric telescopic rods are fixedly connected with the top of the transverse plate, movable rods of the electric telescopic rods are fixedly connected with corresponding sleeves, screw rods are fixedly installed at the outer ends of thick shafts of the telescopic shafts, the outer ends of the screw rods are in threaded fit with corresponding threaded holes, first bevel gears are fixedly installed at the inner ends of the thin shafts of the telescopic shafts, second bevel gears are fixedly installed on the output shaft of the switch motor, the first bevel gears are in meshed fit with the second bevel gears, induction heating devices are symmetrically arranged at the left side and the right side of the lower portion of the transverse plate, the lower end of each first through hole is provided with a three-way pipe, one interface of the three-way pipe is fixedly connected with the lower end of the corresponding first through hole, the other interface of the three-way pipe is fixedly connected with the upper end inlet of the corresponding induction heating device, the left and right ends of the base are symmetrically and fixedly provided with vertical side plates, the left and right ends of each horizontal plate are fixedly connected with the upper end of the corresponding side plate through a second connecting frame, the inner sides of the side plates close to the upper and lower ends are fixedly provided with first transverse rails, a vertical rail is arranged between the two first transverse rails on the same side plate, the upper and lower ends of each vertical rail are connected with the corresponding first transverse rails through first sliders, a second transverse rail is arranged between the two vertical rails, the two ends of the second transverse rail are connected with the corresponding vertical rails through second sliders, the upper parts of the second transverse rails are matched and provided with third sliders, the upper parts of the third sliders are fixedly provided, the first sliding block, the second sliding block and the third sliding block are all self-powered, and the side part of the outer end of the screw rod is provided with a material hole.
The metal particle induction heating additive manufacturing device comprises a tubular shell, a stepped ceramic tube and an induction coil, wherein a fourth through hole is formed in the middle of the lower end face of the shell, a fifth through hole is formed in the middle of the upper end face of the shell, the stepped ceramic tube is fixedly installed in the shell, the upper end of a thick tube of the stepped ceramic tube penetrates through the corresponding fifth through hole and then is located outside the shell, a thin tube of the stepped ceramic tube penetrates through the corresponding fourth through hole and then is located outside the shell, the other connector of the three-way tube is fixedly connected with the upper end of the corresponding stepped ceramic tube, and the induction coil is wound on the corresponding stepped ceramic tube.
According to the metal particle induction heating material increase manufacturing device, the sixth through hole is formed in the middle of the top surface of the transverse plate, the switch motor is a double-output-shaft motor, the second vertical shaft is fixedly installed at the lower end of an output shaft of the switch motor, the funnel is arranged at the lower end of the second vertical shaft, the transverse rod is fixedly installed in the funnel, the second vertical shaft is fixedly connected with the transverse rod, and the funnel is located at the lower parts of the lower ends of the two induction heating devices.
According to the additive manufacturing device for metal particle induction heating, the funnel, the second vertical shaft and the cross rod are made of high-temperature-resistant high-temperature structural ceramic materials.
According to the metal particle induction heating additive manufacturing device, the upper portion of the side face of the shell is provided with the plurality of uniformly distributed air inlet holes, the outer ports of the air inlet holes are fixedly connected with one end of the air inlet pipe, and the lower portion of the side face of the shell is provided with the plurality of uniformly distributed air outlet holes.
The method for using the metal particle induction heating additive manufacturing device comprises the steps that different metal powder particles to be used are contained in the charging barrel, the electric telescopic rod extends out to ensure that the first bevel gear is meshed and matched with the second bevel gear, the switching motor works to drive the two screw rods to rotate to ensure that the material holes are communicated with the corresponding second through holes, the feeding motor works to drive the metal powder particles to move downwards along the second through holes through the helical blades and enter the induction heating device through the three-way pipe, the metal powder particles flow out from the lower end outlet of the induction heating device after being heated to a molten state by the induction heating device, different metals in the molten state flowing out of the two induction heating devices fall onto the same position on the base plate to form a forming layer, the additive manufacturing work is started, and the metal in the molten state can be ensured to flow out smoothly from the lower end of the induction heating device without blocking through blowing into the three-way pipe, the speed of different metal powder particles entering the corresponding induction heating device can be controlled by controlling the rotating speed of the feeding motor, so that the proportion of different metal components in the forming layer can be controlled at will, and the movement of the substrate in the x, y and z directions can be controlled by matching the first transverse rail, the second transverse rail, the vertical rail, the first sliding block, the second sliding block and the third sliding block.
The invention has the advantages that: the invention can rapidly and efficiently carry out the mixed additive manufacturing of a plurality of different metals. When the device works, the two charging barrels are filled with different metal powder particles to be used, the electric telescopic rod extends out to ensure that the first bevel gear is meshed with the second bevel gear, the switching motor works to drive the two screw rods to rotate to ensure that the material holes are communicated with the corresponding second through holes, the sealing of the second through holes is removed, the feeding motor works to drive the metal powder particles to move downwards along the second through holes and enter the induction heating device through the three-way pipe through the helical blades, the metal powder particles flow out from the lower end outlet of the induction heating device after being heated to a molten state by the induction heating device, different metals in a molten state flowing out from the two induction heating devices fall to the same position on the base plate to form a forming layer, the material increase manufacturing work is started, and the smooth flowing out of the metal in the molten state from the lower outlet end of the induction heating device can be ensured without blocking by blowing air into, and the powder and the ceramic tube are protected from being oxidized at high temperature, and the blown gas is inert gas. The speed of different metal powder particles entering the corresponding induction heating device can be controlled by controlling the rotating speed of the feeding motor, so that the proportion of different metal components in a forming layer can be controlled at will, and the movement of the substrate in the x, y and z directions can be controlled by matching the first transverse rail, the second transverse rail, the vertical rail, the first sliding block, the second sliding block and the third sliding block, so that the thickness of the forming layer at different positions on the substrate can be accurately controlled, and the material increase manufacturing is more convenient and efficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of a portion I of FIG. 1; FIG. 3 is a partial enlarged view of section II of FIG. 1; FIG. 4 is a partial enlarged view of section III of FIG. 1; fig. 5 is a partially enlarged view of the portion iv of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A metal particle induction heating additive manufacturing device comprises a base 1 and a transverse plate 2, wherein the top surface of the transverse plate 2 is provided with first through holes 3 close to the left end and the right end, the upper end of each first through hole 3 is fixedly provided with a vertical cylinder 4, the middle of the upper end surface and the lower end surface of each cylinder 4 is symmetrically provided with a hole groove 5, the side surface of each cylinder 4 is provided with a threaded hole 6, the middle of the bottom surface of the hole groove 5 positioned at the upper part is provided with a second through hole 7, the second through hole 7 penetrates through the corresponding threaded hole 6 and then is communicated with the hole groove 5 positioned at the lower part, the upper end of each cylinder 4 is fixedly provided with a material cylinder 8, the middle of the bottom end surface of each material cylinder 8 is provided with a third through hole 9, the third through hole 9 is coaxial with the central line of the corresponding hole groove 5, a vertical feeding motor 10 is fixedly arranged in the middle of the top in the material cylinder 8, the lower end of an output shaft of, the periphery of the lower end of the first vertical shaft 11 is provided with a helical blade 17, the helical blade 17 and the corresponding first vertical shaft 11 are of an integral structure, a vertical switch motor 12 is fixedly installed in the middle of the top of the transverse plate 2, telescopic shafts 13 are symmetrically arranged at the left end and the right end of an output shaft of the switch motor 12, sleeves 14 are sleeved on thin shafts of the telescopic shafts 13 through bearings, transverse electric telescopic rods 15 are symmetrically arranged at the left side and the right side of the switch motor 12, fixed rods of the electric telescopic rods 15 are fixedly connected with the top of the transverse plate 2, movable rods of the electric telescopic rods 15 are fixedly connected with the corresponding sleeves 14, screw rods 16 are fixedly installed at the outer ends of thick shafts of the telescopic shafts 13, the outer ends of the screw rods 16 are in threaded fit with corresponding threaded holes 6, first bevel gears 18 are fixedly installed at the inner ends of the thin shafts of the telescopic shafts 13, second bevel gears 19 are fixedly installed on the output shaft of the, the left side and the right side of the lower part of the transverse plate 2 are symmetrically provided with induction heating devices 20, the induction heating devices 20 are inclined, the induction heating devices 20 are fixedly connected with the transverse plate 2 through first connecting frames 21, the lower ends of the first through holes 3 are respectively provided with a three-way pipe 22, one interface of the three-way pipe 22 is fixedly connected with the lower end of the corresponding first through hole 3, the other interface of the three-way pipe 22 is fixedly connected with the upper end inlet of the corresponding induction heating device 20, the left end and the right end of the base 1 are symmetrically and fixedly provided with vertical side plates 23, the left end and the right end of the transverse plate 2 are fixedly connected with the upper ends of the corresponding side plates 23 through second connecting frames 24, the inner sides of the side plates 23 are respectively and fixedly provided with first transverse rails 25 near the upper ends and the lower ends, vertical rails 26 are arranged between the two first transverse rails 25 on the same side plate 23, the upper ends and the lower ends of, a second transverse rail 27 is arranged between the two vertical rails 26, two ends of the second transverse rail 27 are connected with the corresponding vertical rails 26 through second sliders 28, third sliders 29 are installed on the upper portions of the second transverse rails 27 in a matched mode, positioning plates 30 are fixedly installed on the upper portions of the third sliders 29, base plates 31 are fixedly installed on the tops of the positioning plates 30, the first sliders 42, the second sliders 28 and the third sliders 29 are self-powered, and material holes 43 are formed in the side portions of the outer ends of the screw rods 16. The invention can rapidly and efficiently carry out the mixed additive manufacturing of a plurality of different metals. When the device works, the two charging barrels 8 are filled with different metal powder particles required to be used, the electric telescopic rod 15 extends out to ensure that the first bevel gear 18 is meshed with the second bevel gear 19, the switching motor 12 works to drive the two screw rods 16 to rotate to ensure that the material holes 43 are communicated with the corresponding second through holes 7, the sealing of the second through holes 7 is released, the feeding motor 10 works to drive the metal powder particles to move downwards along the second through holes 7 through the helical blade 17 and enter the induction heating device 20 through the three-way pipe 22, the metal powder particles flow out from the lower end outlet of the induction heating device 20 after being heated to a molten state by the induction heating device 20, the different metals in the molten state flowing out from the two induction heating devices 20 fall onto the same position on the base plate 31 to form the forming layer 38, the material increase manufacturing work is started, and the molten metal can be ensured to flow out smoothly from the lower outlet end of the induction heating device 20 without blocking through blowing air into the three-way, the speed of different metal powder particles entering the corresponding induction heating device 20 can be controlled by controlling the rotating speed of the feeding motor 10, so that the proportion of different metal components in the forming layer 38 can be controlled at will, and the movement of the substrate 31 in the x, y and z directions can be controlled by matching the first transverse rail 25, the second transverse rail 27, the vertical rail 26, the first sliding block 42, the second sliding block 28 and the third sliding block 29, so that the thickness of the forming layer 38 at different positions on the substrate 31 can be accurately controlled, and the additive manufacturing is more convenient and efficient.
Specifically, as shown in the figure, the induction heating device 20 according to the present embodiment includes a tubular housing 201, a stepped ceramic tube 202, and an induction coil 203, wherein a fourth through hole 32 is formed in the middle of a lower end surface of the housing 201, a fifth through hole 33 is formed in the middle of an upper end surface of the housing 201, the stepped ceramic tube 202 is fixedly installed in the housing 201, an upper end of a thick tube of the stepped ceramic tube 202 passes through the corresponding fifth through hole 33 and is located outside the housing 201, a thin tube of the stepped ceramic tube 202 passes through the corresponding fourth through hole 32 and is located outside the housing 201, another interface of the three-way tube 22 is fixedly connected to an upper end of the corresponding stepped ceramic tube 202, and the induction coil 203 is wound on the corresponding stepped ceramic tube 202. After entering the thick tube of the stepped ceramic tube 202, the metal powder particles in the charging barrel 8 are rapidly heated to be in a molten state under the action of the induction coil 203 and then flow out through the thin tube, the stepped ceramic tube 202 is made of a high-temperature-resistant material and is non-conductive, and is suitable for heating the metal powder particles, the stepped ceramic tube 202 is divided into the thick tube and the thin tube, and the thin tube can accurately control the falling point of the metal in the molten state on the substrate 31 after flowing out.
Specifically, as shown in the figure, a sixth through hole 34 is formed in the middle of the top surface of the transverse plate 2 in the embodiment, the switching motor 12 is a double-output-shaft motor, a second vertical shaft 35 is fixedly installed at the lower end of an output shaft of the switching motor 12, a funnel 36 is arranged at the lower end of the second vertical shaft 35, a transverse rod 37 is fixedly installed in the funnel 36, the second vertical shaft 35 is fixedly connected with the transverse rod 37, and the funnel 36 is located at the lower end lower portion of the two induction heating devices 20. Different metal powder particles flow into the funnel 36 simultaneously after heating into molten state through the corresponding induction heating device 20, and the funnel rotates that does not stop under switching motor 12's drive, and different molten state metals can be quick in the pivoted funnel by the mixture, and the molten state metal that mixes flows out from the lower port of funnel 36 at last and falls the shaping layer 38 composition that forms more even on the base plate 31.
Further, as shown in the figure, the hopper 36, the second vertical shaft 35, and the cross bar 37 of the present embodiment are made of high temperature resistant high temperature structural ceramic materials. The high-temperature structural ceramic has high melting point, higher high-temperature strength, smaller high-temperature creep property, better thermal shock resistance, corrosion resistance, oxidation resistance, structural stability and the like. The appearance of the high-temperature structural material makes up the defects that the metal material is not oxidized and is easy to corrode at high temperature, and is very suitable for being used in the invention.
Furthermore, as shown in the figure, a plurality of air inlet holes 39 are uniformly distributed on the upper portion of the side surface of the housing 201, the outer ports of the air inlet holes 39 are fixedly connected to one end of the air inlet pipe 40, and a plurality of air outlet holes 41 are uniformly distributed on the lower portion of the side surface of the housing 201. In the working process of the invention, the air inlet pipe 40 blows air into the shell 201 through the corresponding air inlet hole 39, and the air is discharged from the air outlet hole 41, so that the heat in the shell 201 can be discharged as soon as possible, and the parts such as the induction coil 203, the shell 201 and the like are prevented from being damaged by overhigh temperature.
Furthermore, the charging barrel 8 described in this embodiment contains different metal powder particles to be used, the electric telescopic rod 15 extends to ensure that the first bevel gear 18 is engaged with the second bevel gear 19, the switching motor 12 operates to drive the two screws 16 to rotate to ensure that the material holes 43 are communicated with the corresponding second through holes 7, the feeding motor 10 operates to drive the metal powder particles to move downwards along the second through holes 7 through the three-way pipe 22 and enter the induction heating device 20 through the three-way pipe 22, the metal powder particles flow out from the lower outlet of the induction heating device 20 after being heated to a molten state by the induction heating device 20, the different metals in the molten state flowing out from the two induction heating devices 20 fall onto the same position on the substrate 31 to form the forming layer 38, material increase manufacturing operation is started, and the smooth outflow of the metal in the molten state from the lower outlet end of the induction heating device 20 can be ensured not to be blocked by blowing air into the three-way pipe 22, the speed of different metal powder particles entering the corresponding induction heating device 20 can be controlled by controlling the rotating speed of the feeding motor 10, so that the proportion of different metal components in the forming layer 38 can be controlled at will, and the movement of the substrate 31 in the x, y and z directions can be controlled by matching the first transverse rail 25, the second transverse rail 27, the vertical rail 26, the first sliding block 42, the second sliding block 28 and the third sliding block 29.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. An additive manufacturing device for metal particle induction heating is characterized in that: comprises a base (1) and a transverse plate (2), wherein the top surface of the transverse plate (2) is provided with first through holes (3) close to the left end and the right end, the upper end of each first through hole (3) is fixedly provided with a vertical cylinder (4), the middle of the upper end surface and the lower end surface of each cylinder (4) is symmetrically provided with hole grooves (5), the side surface of each cylinder (4) is provided with a threaded hole (6), the middle of the bottom surface of the hole groove (5) positioned at the upper part is provided with a second through hole (7), the second through hole (7) penetrates through the corresponding threaded hole (6) and then is communicated with the hole groove (5) positioned at the lower part, the upper end of each cylinder (4) is fixedly provided with a charging barrel (8), the middle of the bottom end surface of each charging barrel (8) is provided with a third through hole (9), the third through holes (9) are coaxial with the central lines of the corresponding hole grooves (5), the middle of the, the lower end of the first vertical shaft (11) penetrates through the corresponding third through hole (9) and then is positioned inside the corresponding hole groove (5), the periphery of the lower end of the first vertical shaft (11) is provided with a helical blade (17), the helical blade (17) and the corresponding first vertical shaft (11) are of an integral structure, a vertical switch motor (12) is fixedly installed in the middle of the top of the transverse plate (2), telescopic shafts (13) are symmetrically arranged at the left end and the right end of an output shaft of the switch motor (12), sleeves (14) are sleeved on the thin shafts of the telescopic shafts (13) through bearings, transverse electric telescopic rods (15) are symmetrically arranged at the left side and the right side of the switch motor (12), a fixed rod of each electric telescopic rod (15) is fixedly connected with the top of the transverse plate (2), a movable rod of each electric telescopic rod (15) is fixedly connected with the corresponding sleeve (14), screws (16) are fixedly installed at the outer ends of the thick shafts of, the outer end of the screw rod (16) is in threaded fit with the corresponding threaded hole (6), the inner ends of the thin shafts of the telescopic shafts (13) are fixedly provided with first bevel gears (18), the output shaft of the switch motor (12) is fixedly provided with second bevel gears (19), the first bevel gears (18) are meshed and matched with the second bevel gears (19), the left side and the right side of the lower part of the transverse plate (2) are symmetrically provided with induction heating devices (20), the induction heating devices (20) are inclined, the induction heating devices (20) are fixedly connected with the transverse plate (2) through first connecting frames (21), the lower ends of the first through holes (3) are respectively provided with a three-way pipe (22), one interface of the three-way pipes (22) is fixedly connected with the lower end of the corresponding first through hole (3), the other interface of the three-way pipe (22) is fixedly connected with the upper end inlet of the corresponding induction heating device (20), the left end and the right end of the base (1) are symmetrically and fixedly provided, the left end and the right end of a transverse plate (2) are fixedly connected with the upper ends of corresponding side plates (23) through second connecting frames (24), first transverse rails (25) are fixedly installed at the positions, close to the upper end and the lower end, of the inner sides of the side plates (23), a vertical rail (26) is arranged between the two first transverse rails (25) on the same side plate (23), the upper end and the lower end of the vertical rail (26) are connected with the corresponding first transverse rails (25) through first sliding blocks (42), a second transverse rail (27) is arranged between the two vertical rails (26), the two ends of the second transverse rail (27) are connected with the corresponding vertical rails (26) through second sliding blocks (28), third sliding blocks (29) are installed on the upper portions of the second transverse rails (27) in a matched mode, positioning plates (30) are fixedly installed on the upper portions of the third sliding blocks (29), base plates (31) are fixedly installed on the tops of the positioning plates (30), the first sliding blocks (42), the second sliding blocks (28) and the third sliding blocks, the side part of the outer end of the screw (16) is provided with a material hole (43).
2. A metal particle induction heated additive manufacturing apparatus according to claim 1, wherein: the induction heating device (20) comprises a tubular shell (201), a stepped ceramic tube (202) and an induction coil (203), wherein a fourth through hole (32) is formed in the middle of the lower end face of the shell (201), a fifth through hole (33) is formed in the middle of the upper end face of the shell (201), the stepped ceramic tube (202) is fixedly installed in the shell (201), the upper end of a thick tube of the stepped ceramic tube (202) penetrates through the corresponding fifth through hole (33) and then is located outside the shell (201), a thin tube of the stepped ceramic tube (202) penetrates through the corresponding fourth through hole (32) and then is located outside the shell (201), another interface of the three-way tube (22) is fixedly connected with the upper end of the corresponding stepped ceramic tube (202), and the induction coil (203) is wound on the corresponding stepped ceramic tube (202).
3. A metal particle induction heated additive manufacturing apparatus according to claim 1, wherein: the improved induction heating device is characterized in that a sixth through hole (34) is formed in the middle of the top surface of the transverse plate (2), the switch motor (12) is a double-output-shaft motor, a second vertical shaft (35) is fixedly installed at the lower end of an output shaft of the switch motor (12), a funnel (36) is arranged at the lower end of the second vertical shaft (35), a transverse rod (37) is fixedly installed in the funnel (36), the second vertical shaft (35) is fixedly connected with the transverse rod (37), and the funnel (36) is located on the lower portion of the lower end of the two induction heating devices (20).
4. A metal particle induction heated additive manufacturing apparatus according to claim 3, wherein: the funnel (36), the second vertical shaft (35) and the cross rod (37) are made of high-temperature-resistant high-temperature structural ceramic materials.
5. A metal particle induction heated additive manufacturing apparatus according to claim 2, wherein: the air inlet structure is characterized in that a plurality of uniformly distributed air inlet holes (39) are formed in the upper portion of the side surface of the shell (201), outer ports of the air inlet holes (39) are fixedly connected with one end of an air inlet pipe (40), and a plurality of uniformly distributed air outlet holes (41) are formed in the lower portion of the side surface of the shell (201).
6. The method of using a metal particle induction heated additive manufacturing apparatus of claim 1, wherein: the charging barrel (8) is filled with different metal powder particles to be used, the electric telescopic rod (15) extends out to ensure that the first bevel gear (18) is meshed with the second bevel gear (19) to be matched, the switching motor (12) works to drive the two screw rods (16) to rotate to ensure that the material holes (43) are communicated with the corresponding second through holes (7), the feeding motor (10) works to drive the metal powder particles to move downwards along the second through holes (7) through the helical blades (17) and enter the induction heating device (20) through the three-way pipe (22), the metal powder particles flow out from the lower end outlet of the induction heating device (20) after being heated to a molten state by the induction heating device (20), different metals in the molten state flowing out of the two induction heating devices (20) fall to the same position on the base plate (31) to form a forming layer (38), and material increase manufacturing work is started, the metal in a molten state can be guaranteed to smoothly flow out of the lower outlet end of the induction heating device (20) without being blocked by blowing into the three-way pipe (22), the blown gas is inert gas, the speed of different metal powder particles entering the corresponding induction heating device (20) can be controlled by controlling the rotating speed of the feeding motor (10), the proportion of different metal components in the forming layer (38) can be controlled at will, and the movement of the substrate (31) in the x, y and z directions can be controlled by the matching of the first transverse rail (25), the second transverse rail (27), the vertical rail (26), the first sliding block (42), the second sliding block (28) and the third sliding block (29).
CN201810474483.7A 2018-05-17 2018-05-17 Additive manufacturing device for metal particle induction heating and using method thereof Active CN108620587B (en)

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