CN208116755U - The cold spraying deposited metal 3D printer of fusible removal support - Google Patents
The cold spraying deposited metal 3D printer of fusible removal support Download PDFInfo
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- CN208116755U CN208116755U CN201820389805.3U CN201820389805U CN208116755U CN 208116755 U CN208116755 U CN 208116755U CN 201820389805 U CN201820389805 U CN 201820389805U CN 208116755 U CN208116755 U CN 208116755U
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Abstract
The utility model relates to a kind of cold spraying deposited metal 3D printers of fusible removal support, feature be include cabinet, print tray substrate, electrothermal prints pallet mounting base, print pallet, printing head, horizontal plane motion component, Z-direction moving parts, first non-return valve, second non-return valve, first powder feeder, first heating mantle, support metal powder holding vessel, second powder feeder, second heating mantle, part metal powder holding vessel, gas-heating apparatus, first pressure reducing valve, first pneumatic ball valve, second pressure reducing valve, second pneumatic ball valve, third pressure reducing valve, third pneumatic ball valve, feeder, temperature sensor and metal powder collection device；Hermatic door is equipped in the opening of cabinet.The advantages that it is fast with shaping speed, and effect is good, and device fabrication, maintenance cost are low, is suitable for various metal materials.
Description
Technical field
The utility model relates to a kind of cold spraying deposited metal 3D printers of fusible removal support.
Background technique
Metal 3D printing technique is forward position and most potential technology the most in 3D printing system, is advanced manufacturing technology
Important development direction.Currently, metal 3D printing forming method mainly has：Precinct laser fusion（Selective Laser
Melting, SLM）, electron beam selective melting（Electron Beam Selective Melting, EBSM）, laser near net
Forming（Laser Engineered Net Shaping, LENS）Deng.
Although there is tight demand in enterprise to metal 3D printing technique, there is printing effect in current metal 3D printing technique
The disadvantages of rate is low, printing device is expensive, printout surface quality is poor, and when printing has complex-curved components, support
Material is difficult to remove, and these problems seriously hinder metal 3D printing technique in the popularization and application of enterprise.
The emergence and development of the deposition modeling process of metal cold spraying in recent years, to solve existing metal 3D printing technique institute
The difficulty faced provides new method.
Metal cold spraying deposition modeling process originates from cold spray technique (Cold Gas DynamicSpray, CGDS),
The technology is earliest by the researcher A.N.Papyrin of the academy of sciences of former Soviet Union Siberia branch theory and applied mechanics research institute
And its colleague 1990 propose, it be by high pressure gas (nitrogen, helium, air or mixed gas etc.) directly or through
Gas heater enters the Laval nozzle of scaling, supersonic airstream is formed, to drive powder particle (5~50 μm) low
Enter Laval nozzle under warm (generally below 600 DEG C), with high speed (300~1200m/ after Laval nozzle accelerates
S) bumped substrate makes particle that strong plastic deformation occur, and kinetic energy is transformed into thermal energy, to form one layer of non-infiltration of approximation
The coating that permeability combines is deposited on matrix surface.Particle heating temperature is low when due to cold spraying, and spraying process particle remains
Solid-state, solid granulates under the conditions of high stress, strain and strain rate by plastic flow caused by adia-batic shear instability or
Person realizes the deposition in workpiece surface by mechanical processes such as drastic deformations.Therefore, cold spray technique has the change of sedimentary
It studies point and microstructure is consistent with particulate feed material, sedimentary is fine and close, and porosity is low, and deposition velocity is equal more fastly
A advantage.
Although cold spraying has unique advantage in terms of keeping deposited layer material primitive component, reducing,
Since its deposition fully relies on the plastic deformation of sprayed particle, the cold spraying coating of early stage based on low-durometer material, if
The higher coating material of hardness is deposited with cold spray technique, just must be using helium as working gas, not only higher cost in this way,
And the bond strength of sedimentary is relatively low.A.Hamid, M. Gurjieie in 2004 et al. further study showed that, cold spray
Deposition efficiency and bond strength are applied with the temperature of the jet velocity of metal powder granulates, the temperature of metal powder granulates and substrate
Increase and increase.Based on this rule, William O ' Neill seminar of univ cambridge uk proposes Supersonic within 2008
Fast laser deposition technique (SLD), by the synchronous introducing cold spraying process of laser beam, using laser irradiation to sprayed particle, base
Material or both heats and softens simultaneously, and moment adjusts and improves the mechanical property and Collision deposition state of material, to improve low pressure
Thickness, deposition efficiency, consistency and the bond strength of cold spray layer, and then improve the performance of coating.Further, since laser heats
To the emollescence of sprayed particle and substrate, the critical deposition velocity of sprayed particle is down to original half, therefore available rates
The expensive helium of cheap nitrogen substitution, realizes the deposition of high hardness material, has also widened cold spraying while cost is reduced
The range of deposition materials.Cambridge University realizes the deposition of the metal materials such as Ti, Cu, Al using supersonic speed laser deposition technique,
And the structural constituent to depositing coating, consistency, wearability etc. are studied, it was demonstrated that the feasibility of the technology and good
Application potential.
With the continuous development of cold spray technique, researcher starts the 3D printing system that the technology is used for metal parts
It makes.In current 3D printing equipment, printing head is by the intracorporal X of case to component and Y phase component so as to the water in cabinet
Translation is dynamic, which is installed to moving parts by guide post, guide sleeve, toothed belt, synchromesh gear, stepper motor, nozzle mounting seat, guide post
Seat composition, guide post are mounted on the Mobile base of Y-direction moving parts by the guide post mounting base at both ends；The Y-direction moving parts by
Guide post, guide sleeve, toothed belt, synchromesh gear, stepper motor, Y-direction Mobile base, guide post mounting base composition, guide post pass through both ends
Guide post mounting base is mounted on cabinet 1；Printing head is mounted on nozzle mounting seat, and printing tray seat is located at Z-direction moving parts
On, Z-direction moving parts are made of guide post, guide sleeve, ball screw, nut, stepper motor, guide post mounting base.
Australia SPEE3D company Kennedy and Camilleri is developed based on the metal of cold spray technique within 2017
3D printer, this sets after air is accelerated to the three times of the velocity of sound by nozzle and the powder of injection is deposited on substrate, passes through machine
It is logical without support construction and cooling that the movement of device arm can carry out 3D printing in the case where angle of dangling is no more than 45 degree
Road.The technology printing shaping speed is very fast, and manufacturing cost is low, the disadvantage is that gas consumption is big, metal powder deposition efficiency is low.
Yao's Jian Hua team of Zhejiang Polytechnical University combines realization with laser technology to supersonic cold gas spray deposition with seminar of Cambridge University
Research is unfolded in the technology of metal 3D printing, proposes within 2012 supersonic speed laser deposition 3D printing technique, utilizes laser beam heats
Carry out assistant metal powder cold spraying deposition modeling, technology deposition efficiency is high, gas heating temperature is low, sedimentary mechanical performance compared with
Height, but equipment is expensive.
Since substrate and the metallic particles of injection keep solid-state during metal cold spraying deposition modeling, based on cold
Spray deposited molding metal 3D printing technique is of virtually a critically important advantage, is exactly easier to realize two or more
Different metal material deposition modeling, more set powder feeding mechanisms need to be only set and the progress such as printing head are accordingly transformed,
This is that other metal 3D printing methods such as are difficult to do with respect to precinct laser fusion, electron beam selective melting, laser near-net-shape
Arrive, therefore, using this feature, can solve in current metal 3D printing technique generally existing more metal materials printing and
The difficult problem of support removal.
Summary of the invention
For overcome the deficiencies in the prior art, it is different molten by cold spraying deposition that the purpose of the utility model is to provide a kind of
Point metal powder and by fusing removal low melting point support metal, shaping speed is fast, and effect is good, device fabrication, maintenance cost
It is low, the cold spraying deposited metal 3D printer of the fusible removal support of the 3D printing suitable for various metal materials.
It in order to achieve the above object, the utility model is realized in this way, is a kind of cold spray of fusible removal support
Apply deposited metal 3D printer, it is characterised in that including：
Cabinet, printing tray substrate, electrothermal printing pallet mounting base, printing pallet, printing head, horizontal plane motion group
Part, Z-direction moving parts；It wherein is equipped with hermatic door in the opening of the cabinet, the Z-direction moving parts are located in cabinet, institute
It states horizontal plane motion component to be located in cabinet, the printing head is located on horizontal plane motion component to enable printing head
It is moved horizontally in the chassis along X, Y-direction；The printing tray substrate is located on Z-direction moving parts, the electrothermal printing
Pallet mounting base is located on printing tray substrate and moves with printing tray substrate along Z-direction, and the printing pallet is removably set
In electrothermal printing pallet mounting base, printing pallet is located at the lower section of printing head；
First non-return valve, the second non-return valve, the first powder feeder, the first heating mantle, support metal powder holding vessel, second are sent
Powder device, the second heating mantle, part metal powder holding vessel, gas-heating apparatus, the first pressure reducing valve, the first pneumatic ball valve, second
Pressure reducing valve, the second pneumatic ball valve, third pressure reducing valve, third pneumatic ball valve and feeder；The part metal powder holding vessel
Discharge port be connected to the feed inlet of the second powder feeder, the discharge port and first powder feeder of the support metal powder holding vessel
Feed inlet connection；The outlet of the feeder respectively with the import of the first pneumatic ball valve, the import of the second pneumatic ball valve and the
The outlet of the inlet communication of three pneumatic ball valves, the first pneumatic ball valve is connected by the air inlet of the first pressure reducing valve and the first powder feeder
Logical, the outlet of the second pneumatic ball valve is connected to by the second pressure reducing valve with the air inlet of the second powder feeder, and third pneumatic ball valve goes out
Mouth is connected to by third pressure reducing valve with the air inlet of gas-heating apparatus, and the outlet of the first powder feeder passes through the first non-return valve and machine
The first charging aperture of printing head in case is connected to, and the outlet of the second powder feeder is sprayed by the printing in the second non-return valve and cabinet
The second charging aperture connection of head, the gas outlet of gas-heating apparatus is connected to the air inlet of printing head；First heating mantle
It is located to be heated to the support metal powder in the first powder feeder on the first powder feeder, second heating is set in second and send
To be heated to the part metal powder in the second powder feeder on powder device；And
Temperature sensor and metal powder collection device；The metal powder collection device be connected to the exhaust outlet of cabinet from
And collect undeposited metal powder, the temperature sensor is located in cabinet, temperature sensor for detect jet deposition at
The temperature in type region.
In the technical scheme, the horizontal plane motion component includes X to moving parts and Y-direction moving parts, described to beat
Print spray head be located at X on moving parts to make X to moving parts drive printing head move in X direction, the Y-direction exercise group
Part is located in cabinet, and the output end and X of Y-direction moving parts connect to drive X can be along the side Y to moving parts to moving parts
To movement.
In the technical scheme, the metal powder collection device include casing, filter bag, sieve tray, powder bucket, bottom cover and
Check valve；Wherein the sieve tray is located in casing, and sieve tray and casing inner wall cooperatively form powder filter area, the powder mistake
Filter area is connected to the gas outlet of casing, and the filter bag is located in powder filter area to which the gas for flowing through powder filter area obtains
Filtering, the air inlet of the casing are connected to by check valve with the exhaust outlet of cabinet, the powder bucket be located at the bottom of casing from
And the metal powder on filter bag is collected, the bottom cover is located at the exit of powder bucket removably to close or open powder bucket
Outlet.
It in the technical scheme, further include thermal insulation board, the thermal insulation board is located on printing tray substrate, and the electrothermal is beaten
Stamp rack disk mounting base is located on thermal insulation board.
In the technical scheme, the nozzle bore of the printing head uses the square-section of round-corner transition.
In the technical scheme, the printing head has multiple feed inlets, by punishing in the corresponding pipeline of feed inlet
Not She Zhi non-return valve prevent from leading to the metal powder in feed pipe due to the variation of pressure in printing head in forming process
End accidentally sprays.
The utility model compared with prior art the advantages of be：It is able to achieve while being printed the target of various metals material, is dashed forward
It breaks various metals material in current metal 3D printing technique while printing difficult limitation；Support removal is easy, effect is good, preferably
Ground solves the problems, such as that the generally existing support removal of current metal 3D printing is difficult；Workpiece need not be adopted when removing from printing pallet
It with wire cutting, can be handled together when removing backing material, reduce finishing time, and printing pallet may be reused；
The nozzle bore of printing head uses the square-section of round-corner transition, for relatively conventional round nozzle, can not only to spray
It is uniform to apply thickness, also improves the efficiency of spraying and the compactness of inside workpiece entity；Pass through gas using the same printing head
The switching of ball valve is moved to spray different types of metal material, the equipment than conventional double head-types is easier to ensure that print position
Accurately, it operates also easier.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1；
Fig. 3 is metal works, heelpiece, Support Position schematic diagram；
Fig. 4 is the position view that metal works are placed on sieve bakie；
Fig. 5 is printing head schematic diagram；
Fig. 6 is printing head square hole nozzle and circular hole nozzle print effect contrast figure.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, as long as technical characteristic involved in the various embodiments of the present invention described below does not constitute punching each other
It is prominent to be combined with each other.
It as shown in Figures 1 to 6, is a kind of cold spraying deposited metal 3D printer of fusible removal support, including：
Cabinet 1, printing tray substrate 2, electrothermal printing pallet mounting base 4, printing pallet 5, printing head 9, horizontal plane
Moving parts, Z-direction moving parts 28；Wherein hermatic door 29, the Z-direction moving parts 28 are equipped in the opening of the cabinet 1
Be located in cabinet 1, the horizontal plane motion component is located in cabinet 1, the printing head 9 be located on horizontal plane motion component from
And printing head 9 is enable to move horizontally in cabinet 1 along X, Y-direction；The printing tray substrate 2 is located at Z-direction moving parts
On 28, the electrothermal printing pallet mounting base 4 is located on printing tray substrate 2 and moves with printing tray substrate 2 along Z-direction,
The printing pallet 5 is removably located in electrothermal printing pallet mounting base 4, and printing pallet 5 is located under printing head 9
Side, have in electrothermal printing pallet mounting base 4 resistance wire heating board for heat printing pallet 5, the printing pallet 5 is
Rectangular slab is made of metal material such as Q235 steel or 6063 aluminium alloys etc., upper and lower surfaces through grinding to parallelism error not
More than 0.05mm, upper surface surface roughness value is no more than Ra1.6 μm；
First non-return valve 11, the second non-return valve 12, the first powder feeder 13, the first heating mantle 14, support metal powder storage
Tank 15, the second powder feeder 16, the second heating mantle 17, part metal powder holding vessel 18, gas-heating apparatus 19, the first pressure reducing valve
20, the first pneumatic ball valve 21, the second pressure reducing valve 22, the second pneumatic ball valve 23, third pressure reducing valve 24, third pneumatic ball valve 25 and confession
Device of air 26；The discharge port of the part metal powder holding vessel 18 is connected to the feed inlet of the second powder feeder 16, the support
The discharge port of metal powder holding vessel 15 is connected to the feed inlet of the first powder feeder 13；The outlet of the feeder 26 respectively with
The inlet communication of the import of first pneumatic ball valve 21, the import of the second pneumatic ball valve 23 and third pneumatic ball valve 25, first is pneumatic
The outlet of ball valve 21 is connected to by the first pressure reducing valve 20 with the air inlet of the first powder feeder 13, and the outlet of the second pneumatic ball valve 23 is logical
It crosses the second pressure reducing valve 22 to be connected to the air inlet of the second powder feeder 16, the outlet of third pneumatic ball valve 25 passes through third pressure reducing valve 24
It is connected to the air inlet of gas-heating apparatus 19, the outlet of the first powder feeder 13 passes through the first non-return valve 11 and beating in cabinet 1
The first charging aperture connection of spray head 9 is printed, the outlet of the second powder feeder 16 passes through the second non-return valve 12 and the printing head in cabinet 1
9 second charging aperture connection, the gas outlet of gas-heating apparatus 19 is connected to the air inlet of printing head 9；First heating
Set 14 is located to heat to the support metal powder in the first powder feeder 13 on the first powder feeder 13, second heating mantle 17
It is located on the second powder feeder 16 to heat the part metal powder in the second powder feeder 16；And
Temperature sensor 10 and metal powder collection device 27；The exhaust of the metal powder collection device 27 and cabinet 1
To collect undeposited metal powder, the temperature sensor 10 is located in cabinet 1 for mouth connection, and temperature sensor 10 is for examining
The temperature of jet deposition forming area is surveyed, the temperature sensor 10 is infrared temperature sensor.
When work, step steady
1. part metal powder is put into part metal powder holding vessel, the discharge port of part metal powder holding vessel
It is connected to the feed inlet of the second powder feeder, support metal powder is put into support metal powder holding vessel, metal powder is supported
The discharge port of holding vessel is connected to the feed inlet of the first powder feeder, and bottled compression work gas is fitted into feeder；
2. printing pallet is put into the printing pallet mounting base of the electrothermal in cabinet and locks, shut and locks cabinet and is close
Closure door；
3. calling in the 3D model data for needing to print part, hierarchy slicing processing is carried out to model；
Step 2 pre-treatment
1. setting 0.1 ~ 0.15MPa for unidirectional valve opening pressure value, the pressure value of third pressure reducing valve is set as 0.6~
2.0MPa, opens third pneumatic ball valve, and the gas in feeder passes sequentially through third pneumatic ball valve, third pressure reducing valve and gas
Working gas is passed through after heating device in cabinet；
2. setting 0.6~2.0MPa for the pressure value of the first pressure reducing valve, which is arranged according to metal powder material
Depending on type, make the spray deposited critical speed of metal powder granulates this kind of metal powder of the speed after the acceleration of printing head
0.4 ~ 0.8 times of angle value, make the lower end surface of printing head to printing pallet by the position that Z-direction moving parts control printing pallet
Upper surface distance is 15 ~ 25 mm；
3. first allowing gas to be discharged 2 ~ 3 minutes after check valve unlatching, original oxygen in cabinet is made constantly to be diluted and arrange
Out；Then the first powder feeder and the first pneumatic ball valve are opened, the gas in feeder passes sequentially through the first pneumatic ball valve, first
Pressure reducing valve and the first powder feeder are to make printing head with the past printing tray surface forming area of the scanning speed of 20 ~ 40 mm/s
Spraying support metal powder, spraying rate is 0.4 ~ 0.8 times of this kind of metal powder painting deposition critical speed value, to fight each other
The forming area of stamp rack disk carries out shot-peening cleaning.
Step 3 preheating
1. opening the power supply of electrothermal printing pallet mounting base, print tray disk is heated, is detected with temperature sensor
Jet deposition forming area stops heating when temperature reaches i.e. Tp+15 DEG C of the interface preheating temperature upper limit, when temperature is lower than preheating
Then start heating when lowest temperature, that is, Tp-15 DEG C, Tp=（0.4-0.7）Tm, Tm are the fusing point of the support metal, interface preheating temperature
Spend the upper limit≤500 DEG C；
2. starting gas-heating apparatus will be heated to 350 ~ 500 DEG C by the working gas of heating device；Starting first adds
Hot jacket is to make the support metal powder in the first powder feeder be heated to 350 ~ 500 DEG C, and the second heating mantle of starting is to make second
Part metal powder in powder feeder is heated to 350 ~ 500 DEG C；
Step 4 cold spraying deposition printing heelpiece
1. setting 1.0~3.5MPa for the pressure of the first pressure reducing valve, the second pressure reducing valve and third pressure reducing valve, the pressure
Value is arranged depending on metal powder material type, makes speed of the metal powder granulates after printing head accelerates greater than its spraying
Deposit critical speed value；
2. opening the first powder feeder and the first pneumatic ball valve, beat printing head with the scanning speed of 20 ~ 40 mm/s is past
Stamp rack panel surface forming area spraying support metal powder, spraying rate is higher than spray deposited critical speed value high speed at this time, directly
To the heelpiece printed with a thickness of 0.1 ~ 0.25mm.
Step 5 cold spraying deposition printing workpiece
Workpiece is successively printed by individual-layer data on printed heelpiece, opens second when printing workpiece entity area
Pneumatic ball valve and the second powder feeder simultaneously close the first pneumatic ball valve, the gas in feeder pass sequentially through the second pneumatic ball valve,
Second pressure reducing valve and the second powder feeder are to make printing head with the past printing pallet workpiece entity of the scanning speed of 20 ~ 40 mm/s
Region sprays part metal powder；When printing supporting zone, the first pneumatic ball valve is opened, and the second pneumatic ball valve closes to spray
Support metal powder is applied, scanning speed presses v1=k2÷k1×v2, v1For supporting zone scanning speed, v2It is swept for material object parts region
Retouch speed, k1To support metal powder deposition, k2For part metal powder deposition；It is every to have printed one layer, printing pallet decline
One layer is away to make spray distance in print procedure remain unchanged.
Step 6 post-processing
1. after the completion of printing, printing workpiece being taken out together with printing pallet, is existed by printing pallet in upper printing workpiece
Under direction be put into sieve bakie on, will sieve bakie, printing workpiece, printing pallet be put into heat-treatment furnace, be heated to support metal
More than fusing point 30 ~ 50 DEG C；After metal whole fusing cocurrent to be supported is fallen in sieve bakie within heat preservation 1 ~ 2 hour, by workpiece, print tray
Disk, sieve bakie take out from heat-treatment furnace.
2. being modified with file and sand paper to workpiece surface after workpiece Slow cooling.
In the present embodiment, the horizontal plane motion component includes X to moving parts 6 and Y-direction moving parts 7, described to beat
Print spray head 9 is located at X on moving parts 6 to make X drive printing head 9 to move in X direction to moving parts 6, and the Y-direction is transported
Dynamic component 7 is located in cabinet 1, and the output end and X of Y-direction moving parts 7 connect to drive X to moving parts 6 to moving parts 6
It can move along the Y direction.
In the present embodiment, the metal powder collection device 27 includes casing 271, filter bag 272, sieve tray 273, powder
Bucket 274, bottom cover 275 and check valve 276；Wherein the sieve tray 273 is located in casing 271, in sieve tray 273 and casing 271
Wall cooperatively forms powder filter area, and the powder filter area is connected to the gas outlet of casing 271, and the filter bag 272 is located at powder
Gas in filtering area to flow through powder filter area is filtered, the air inlet of the casing 271 by check valve 276 with
The exhaust outlet of cabinet 1 is connected to, and the powder bucket 274 is located at the bottom of casing 271 to collect the metal powder on filter bag 272,
The bottom cover 275 is located at the exit of powder bucket 274 removably to close or open the outlet of powder bucket 274.When work,
Gas with metal powder enters in casing 271 after the discharge of cabinet 1 through check valve 276, then enters after penetrating sieve tray 273
There is filter bag 272 in powder filter area in powder filter area, and the metal powder in gas is obstructed by filter bag 272, on 272 surface of filter bag
Metal powder layer is formed, when filter bag 272 is acted on by mechanical oscillation, the metallic dust for being deposited on 272 surface of filter bag is just fallen
Into powder bucket 274, periodically opening bottom cover 275 can be cleared up, and working gas after filtering can be recycled or directly arrange
Out.
It in the present embodiment, further include thermal insulation board 3, the thermal insulation board 3 is located on printing tray substrate 2, the electrothermal
Printing pallet mounting base 4 is located on thermal insulation board 3, and nonmetallic materials of the thermal insulation board 3 with heat resisting temperature not less than 600 DEG C are as made pottery
Porcelain is made.
In the present embodiment, the nozzle bore of the printing head 9 uses the square-section of round-corner transition, the printing head
9 be Lavalle de Laval noz(zle), the fillet R of the square hole of printing head 9=（0.2~0.3）A, a be square hole side length, square hole side length a with go out
Oral area position taper need to make 0.4 ~ 0.6mm of jeting area side length at 19 ~ 25mm of outside nozzle end face.
In the present embodiment, the printing head 9 has multiple feed inlets, by distinguishing at the corresponding pipeline of feed inlet
Non-return valve is set to prevent from leading to the metal powder in feed pipe due to the variation of pressure in printing head 9 in forming process
Accidentally spray.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to institute
The embodiment of description.For the ordinary skill in the art, the principles of the present invention and objective are not being departed from
In the case of to these embodiments carry out it is a variety of variation, modification, replacement and deformation still fall in the protection scope of the utility model
It is interior.
Claims (6)
1. a kind of cold spraying deposited metal 3D printer of fusible removal support, it is characterised in that including：
Cabinet（1）, printing tray substrate（2）, electrothermal print pallet mounting base（4）, printing pallet（5）, printing head（9）,
Horizontal plane motion component, Z-direction moving parts（28）；Wherein in the cabinet（1）Opening be equipped with hermatic door（29）, the Z
To moving parts（28）It is located at cabinet（1）Interior, the horizontal plane motion component is located at cabinet（1）It is interior, the printing head（9）If
To make printing head on horizontal plane motion component（9）It can be in cabinet（1）It is middle to be moved horizontally along X, Y-direction；The printing
Tray substrate（2）It is located at Z-direction moving parts（28）On, the electrothermal prints pallet mounting base（4）Positioned at printing tray bottom
Plate（2）Above and with printing tray substrate（2）It is moved along Z-direction, the printing pallet（5）Removably it is located at electrothermal printing pallet
Mounting base（4）On, print pallet（5）Positioned at printing head（9）Lower section；
First non-return valve（11）, the second non-return valve（12）, the first powder feeder（13）, the first heating mantle（14）, support metal powder
Holding vessel（15）, the second powder feeder（16）, the second heating mantle（17）, part metal powder holding vessel（18）, gas-heating apparatus
（19）, the first pressure reducing valve（20）, the first pneumatic ball valve（21）, the second pressure reducing valve（22）, the second pneumatic ball valve（23）, third decompression
Valve（24）, third pneumatic ball valve（25）And feeder（26）；The part metal powder holding vessel（18）Discharge port and
Two powder feeders（16）Feed inlet connection, the support metal powder holding vessel（15）Discharge port and the first powder feeder（13）'s
Feed inlet connection；The feeder（26）Outlet respectively with the first pneumatic ball valve（21）Import, the second pneumatic ball valve
（23）Import and third pneumatic ball valve（25）Inlet communication, the first pneumatic ball valve（21）Outlet pass through the first pressure reducing valve
（20）With the first powder feeder（13）Air inlet connection, the second pneumatic ball valve（23）Outlet pass through the second pressure reducing valve（22）With
Two powder feeders（16）Air inlet connection, third pneumatic ball valve（25）Outlet pass through third pressure reducing valve（24）It heats and fills with gas
It sets（19）Air inlet connection, the first powder feeder（13）Outlet pass through the first non-return valve（11）With cabinet（1）Interior printing spray
Head（9）First charging aperture connection, the second powder feeder（16）Outlet pass through the second non-return valve（12）With cabinet（1）Interior printing
Spray head（9）Second charging aperture connection, gas-heating apparatus（19）Gas outlet and printing head（9）Air inlet connection；Institute
State the first heating mantle（14）It is located at the first powder feeder（13）Above to the first powder feeder（13）In support metal powder heating,
Second heating mantle（17）It is located at the second powder feeder（16）Above to the second powder feeder（16）In part metal powder add
Heat；And
Temperature sensor（10）And metal powder collection device（27）；The metal powder collection device（27）With cabinet（1）'s
Exhaust outlet connection is to collect undeposited metal powder, the temperature sensor（10）Positioned at cabinet（1）It is interior, temperature sensor
（10）For detecting the temperature of jet deposition forming area.
2. the cold spraying deposited metal 3D printer of fusible removal support according to claim 1, it is characterised in that institute
Stating horizontal plane motion component includes X to moving parts（6）And Y-direction moving parts（7）, the printing head（9）X is located to movement
Component（6）Above to make X to moving parts（6）Drive printing head（9）It moves in X direction, the Y-direction moving parts（7）If
In cabinet（1）It is interior, Y-direction moving parts（7）Output end and X to moving parts（6）Connection is to drive X to moving parts（6）
It can move along the Y direction.
3. the cold spraying deposited metal 3D printer of fusible removal support according to claim 1, it is characterised in that institute
State metal powder collection device（27）Including casing（271）, filter bag（272）, sieve tray（273）, powder bucket（274）, bottom cover
（275）And check valve（276）；The wherein sieve tray（273）It is located at casing（271）In, sieve tray（273）With casing（271）
Inner wall cooperatively forms powder filter area, the powder filter area and casing（271）Gas outlet connection, the filter bag（272）If
To which the gas for flowing through powder filter area is filtered in powder filter area, the casing（271）Air inlet pass through list
To valve（276）With cabinet（1）Exhaust outlet connection, the powder bucket（274）It is located at casing（271）Bottom to collecting filter bag
（272）On metal powder, the bottom cover（275）Removably it is located at powder bucket（274）Exit to closing or open
Powder bucket（274）Outlet.
4. the cold spraying deposited metal 3D printer of fusible removal support according to claim 1, it is characterised in that also
Including thermal insulation board（3）, the thermal insulation board（3）It is located at printing tray substrate（2）On, the electrothermal prints pallet mounting base（4）
It is located at thermal insulation board（3）On.
5. the cold spraying deposited metal 3D printer of fusible removal support according to claim 1, it is characterised in that institute
State printing head（9）Nozzle bore use round-corner transition square-section.
6. the cold spraying deposited metal 3D printer of fusible removal support according to claim 1, it is characterised in that institute
State printing head（9）With multiple feed inlets, prevent from forming by the way that non-return valve is respectively set at the corresponding pipeline of feed inlet
In the process due to printing head（9）The variation of interior pressure and cause metal powder in feed pipe accidentally to spray.
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Cited By (4)
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| CN108247043A (en) * | 2018-03-22 | 2018-07-06 | 顺德职业技术学院 | The cold spraying deposited metal 3D printing method and apparatus of fusible removal support |
| CN110940569A (en) * | 2020-01-01 | 2020-03-31 | 西南交通大学 | Forming device and using method of low-melting-point metal sample for light gas gun experiment |
| CN111375768A (en) * | 2020-04-14 | 2020-07-07 | 罗哲 | Automatic powder material blanking device of powder metallurgy equipment |
| CN112522696A (en) * | 2020-11-30 | 2021-03-19 | 江苏珀然轮毂有限公司 | Equipment for shot blasting metal coating on surface of automobile hub |
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2018
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| CN108247043A (en) * | 2018-03-22 | 2018-07-06 | 顺德职业技术学院 | The cold spraying deposited metal 3D printing method and apparatus of fusible removal support |
| CN108247043B (en) * | 2018-03-22 | 2024-04-02 | 顺德职业技术学院 | 3D printing method and equipment for cold spraying deposited metal capable of melting and removing support |
| CN110940569A (en) * | 2020-01-01 | 2020-03-31 | 西南交通大学 | Forming device and using method of low-melting-point metal sample for light gas gun experiment |
| CN110940569B (en) * | 2020-01-01 | 2020-11-06 | 西南交通大学 | Forming device and using method of low-melting-point metal sample for light gas gun experiment |
| CN111375768A (en) * | 2020-04-14 | 2020-07-07 | 罗哲 | Automatic powder material blanking device of powder metallurgy equipment |
| CN112522696A (en) * | 2020-11-30 | 2021-03-19 | 江苏珀然轮毂有限公司 | Equipment for shot blasting metal coating on surface of automobile hub |
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