CN110153411A - Dot matrix powdering 3D printing device and Method of printing based on resistance heating - Google Patents
Dot matrix powdering 3D printing device and Method of printing based on resistance heating Download PDFInfo
- Publication number
- CN110153411A CN110153411A CN201910460280.7A CN201910460280A CN110153411A CN 110153411 A CN110153411 A CN 110153411A CN 201910460280 A CN201910460280 A CN 201910460280A CN 110153411 A CN110153411 A CN 110153411A
- Authority
- CN
- China
- Prior art keywords
- powder
- printing
- resistance heating
- dot matrix
- powdering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 83
- 239000011159 matrix material Substances 0.000 title claims abstract description 63
- 238000000227 grinding Methods 0.000 title claims abstract description 54
- 238000010146 3D printing Methods 0.000 title claims abstract description 50
- 238000007639 printing Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 159
- 238000005192 partition Methods 0.000 claims abstract description 36
- 239000000428 dust Substances 0.000 claims abstract description 21
- 238000003892 spreading Methods 0.000 claims abstract description 19
- 230000007480 spreading Effects 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 238000003860 storage Methods 0.000 claims description 26
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 4
- 238000005524 ceramic coating Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000002356 single layer Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
-
- 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
- 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
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention provides a kind of dot matrix powdering 3D printing device and Method of printing based on resistance heating, including seal casinghousing, feeding port, hydraulic lifting frame, dot matrix resistance heating plate, dust feeder, movable supporting frame, power spreading device, powder bed slot, printing base station, partition, lifter and stepper motor.Dot matrix powdering 3D printing device of the invention is by the way of based on resistance heating, and realize that increasing material manufacturing prints using dot matrixed means, after 3 d part is carried out space lattice slice division, a face is first divided into the point of array and the region heating fusing or sintering that the powder on base station in powder bed need to print are obtained into face molding according to 3 d part monolayer slices, then gradually layer heap accumulates straight forming, with lower production cost and high production efficiency, the period that powdering printing prepares part is shortened.
Description
Technical field
The present invention relates to 3D printing technique fields, fill in particular to the dot matrix powdering 3D printing based on resistance heating
It sets and Method of printing.
Background technique
Powdering 3D printing technique is a kind of method of quick direct forming of metal parts, and most commonly used at present is laser choosing
SLM technology is melted in area, and there are also electron beam selective melting EBSM technologies in addition to this, and the most basic principle of Quick-forming is to pass through a little
The manufacture that stacking is successively melted in surface sweeping is directly formed complex three-dimensional part.Biography is produced using this technology is processable
The complicated metal parts that system manufacturing process can not manufacture, conducive to the zero of the method preparation of this quick direct forming
Part played an important role in the fields such as aerospace, biologic medical.
Either selective laser fusing SLM technology or electron beam selective melting EBSM technology are all by single hot spot or more
A hot spot is to heap layer-by-layer after the scanning in a face, that is to say, that they are all to put to form to face to be successively stacked into again
Body formed, although above method forming accuracy is high, the whole part forming period is long, at high cost.
Summary of the invention
The object of the present invention is to provide a kind of dot matrix powdering 3D printing dresses based on resistance heating for metal parts
It sets, solves the problems, such as that current powdering 3D printing technique printing interval is too long, higher cost.
To reach above-mentioned purpose, the dot matrix powdering 3D printing device provided by the invention based on resistance heating, including it is close
Capsule body, feeding port, hydraulic lifting frame, dot matrix resistance heating plate, dust feeder, movable supporting frame, power spreading device, powder bed
Slot, printing base station, partition, lifter and stepper motor；
For printing environment to be isolated from the outside, when printing, is in full inert gas environment the seal casinghousing；
The partition is configured to for seal casinghousing to be divided into upper cavity and lower chamber, the hydraulic lifting frame, dot matrix
Resistance heating plate, dust feeder, movable supporting frame, power spreading device are arranged in upper cavity, powder bed slot, printing base station, lifter
And stepper motor is arranged in lower chamber；
The feeding port is mounted on outside seal casinghousing, and metal powder is entered in dust feeder by its entrance；
The dust feeder includes storage bin and powder feeding component, and the storage bin has the chamber for accommodating metal powder
Body, the cavity are connected to feeding port；The setting of powder feeding component is in storage bin lower part, for receiving the metal powder conveyed from storage bin
End；
It is provided with a movable supporting frame below the dust feeder, is located on partition；The powder feeding component can described in
In space defined by mobile bracket, the bottom discharge port of powder feeding component closes on partition, to provide metal used in one layer of printing
Powder；
The power spreading device includes the roll compacting roller and scraper of a powdering, and the scraper is mounted on the bottom of movable supporting frame
End, the scraper are configured to strike off the metal powder that dust feeder conveys described with movable supporting frame synchronizing moving
In powder bed slot, the roll compacting roller is arranged for being driven and rolling on partition, entire movable supporting frame is driven to move, and
It will be taped against the compacted powder metal in powder bed slot, wherein powder bed slot position is put down in partition lower position and after powdering with partition
Together, wherein being formed with slot identical with powder bed slot cross-section on the partition；
The printing base station is fixed to the lower section of powder bed slot；
The stepper motor is mounted on the bottom of seal casinghousing, is located in lower chamber；The output end of the stepper motor with
Lifter connection drives the up and down motion of lifter, the synchronization lifting of driving printing base station and powder bed slot by stepper motor.
In further embodiment, the dot matrix powdering 3D printing device further includes at least one set of powder recovering device,
Powder recovering device has accumulator tank and returnable bottle, and accumulator tank is arranged below partition, and returnable bottle is fixed with below accumulator tank
And be connected to returnable bottle, the position on the partition corresponding to accumulator tank is provided with opening portion, so that metal powder is via recycling
Slot is regathered into returnable bottle.
In further embodiment, the cross sectional shape of the opening portion and the upper oral part of accumulator tank are identical.
In further embodiment, the scraper is further configured to movable supporting frame synchronizing moving, by metal powder
It strikes off and extra powder is pushed into accumulator tank.
In further embodiment, the dot matrix powdering 3D printing device have two groups described in powder recovering device,
The two sides of powder bed slot are separately positioned on, every group of powder recovering device is correspondingly arranged a scraper.
In further embodiment, the power spreading device advances to the left when carrying out powdering, and the hydraulic lifting frame drives point
Configuration resistance heating plate moves up, and when advance is resetted to the right under powdering doctor blade system, hydraulic lifting frame drives dot matrix
Formula resistance heating plate moves down, and carries out 3D printing.
In further embodiment, the dot matrix resistance heating plate includes the mould of densely arranged resistance heating needle composition
The heating module of block, each heating module is using programmable control and can individually be replaced, the multiple heated mould
Block passes through programming Control heating region.
In further embodiment, high-temperature resistant aluminium oxide ceramic coating is coated on the resistance heating needle.
In further embodiment, the printing base station is internally provided with stratie, to carry out to powder bed slot
Preheating.
In further embodiment, first slope structure, first slope structure are formed on the bottom of the inner cavity of the storage bin
Bottom be provided with the first powder feeding idler wheel and the first opening, realized by the rotation of the first powder feeding idler wheel and at the uniform velocity transmit metal powder
To powder feeding component.
In further embodiment, the powder feeding component is with a horn-like receiving end and the buffering being connected to receiving end
Chamber, the receiving end are fixedly mounted on the top of movable supporting frame, described slow for receiving the metal powder transmitted from storage bin
The inside for rushing chamber to form the second ramp structure, and the bottom of the second ramp structure is provided with the second powder feeding idler wheel and second and opens
Mouthful, it is realized by the rotation of the second powder feeding idler wheel and is at the uniform velocity transmitted on metal powder to partition.
In further embodiment, the size of the second powder feeding idler wheel is less than the first powder feeding idler wheel.
A kind of improvement according to the present invention, it is also proposed that dot matrix powdering 3D printing method, comprising the following steps:
After print procedure starts, the metal powder in storage bin is conveyed into a certain amount of metal powder by dust feeder,
And be made of power spreading device roll compacting roller and scraper and powder is struck off into compacting, extra powder then passes through scraper and blows off and collect to returning
Receive storage in bottle；
Wherein, when power spreading device advances to the left, hydraulic lifting frame drives dot matrix resistance heating plate to be moved upward to a little,
When powdering doctor blade system lower right is advanced and initial position is returned to, hydraulic lifting frame drives dot matrix resistance heating plate to move down
And contacted with powder bed, 3D printing is carried out, it is right for wanting shaped region to heat by the resistance heating on dot matrix resistance heating plate
Fusing makes the region powder melt or be sintered afterwards, and then slowly lifting dot matrix resistance heating plate is simultaneously stopped heating, this subsequent face
The whole forming of layer shaped region solidification finishes；
After to surface layer printing, printing base station is moved down using stepper motor and lifter, is then carried out newly
One layer of powder laying, roll-in and 3D printing, move in circles and increase new one layer of printing, until printing is completed.
By the above technical solution of the present invention as it can be seen that dot matrix powdering 3D printing device of the invention based on resistance using being added
The mode of heat, and realize that increasing material manufacturing prints using dot matrixed means, i.e., 3 d part is subjected to space lattice slice and divided
Afterwards, a face is first divided into the point of array and needs to print by the powder on base station in powder bed according to 3 d part monolayer slices
Region heating fusing or sintering obtain face molding, then gradually layer heap product straight forming.
3D printing device of the invention carries out 3D printing, has lower production cost and high production efficiency, significantly
The period that powdering printing prepares part is shortened, which also assures the forming accuracy of part, for relative complex part
Also it can print；It is changeable easily controllable further for the forming dimension of single part, it can be used for manufacturing more large-scale metal
Part has very strong adaptability.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of the subject matter of the disclosure in the case that the design of sample is not conflicting.In addition, required guarantor
All combinations of the theme of shield are considered as a part of the subject matter of the disclosure.
Can be more fully appreciated from the following description in conjunction with attached drawing present invention teach that the foregoing and other aspects, reality
Apply example and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the invention will be below
Description in it is obvious, or learnt in practice by the specific embodiment instructed according to the present invention.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, example will be passed through and the embodiments of various aspects of the invention is described in reference to the drawings, in which:
Fig. 1 is that the present invention is based on the overall structure diagrams of resistance heating dot matrix metal powdering printing device
Fig. 2 is the detail view of resistance heating plate dot matrix panel machining of the present invention
Fig. 3 is the present invention schematic diagram that dot matrix resistance heating plate and powder bed are done in print state
In figure, 1. feeding ports, 2. seal casinghousings, 3. hydraulic lifting framves, 4. dot matrix resistance heating plates, 5. storage bins, 6.
Powder feeding component, 7. roll compacting rollers, 8. scrapers, 9. accumulator tanks, 10. receiving flasks, 11. powder bed slots, 12. printing base stations, 13. lifters,
14. stepper motor, 15. resistance heating needles, 16. high temperature oxidation resisting aluminized coatings.
Specific embodiment
In order to better understand the technical content of the present invention, special to lift specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs and reality presented hereinbefore
Those of apply example, and describe in more detail below design and embodiment can in many ways in any one come it is real
It applies, this is because conception and embodiment disclosed in this invention are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone, or otherwise any appropriately combined use with disclosed by the invention.
In conjunction with shown in Fig. 1-Fig. 3, the dot matrix powdering 3D based on resistance heating of preferred embodiment is beaten according to the present invention
Printing equipment is set, including including feeding port 1, seal casinghousing 2, feeding port 1 is placed in outside seal casinghousing 2；Feeding port 1 is for installing printing additional
Dusty material.Also, on feeding port quickly screwing switch by the stable ar gas environment of seal casinghousing 2 and external environment every
From reaching the accurate control of print procedure oxygen content and humidity with this.
In conjunction with diagram, dot matrix powdering 3D printing device further includes hydraulic lifting frame 3, dot matrix resistance heating plate 4, powder feeding
Device, movable supporting frame 17, power spreading device, powder bed slot 11, receiving flask 10, printing base station 12, partition 18, lifter 13 and step
Into motor 14.
For printing environment to be isolated from the outside, when printing, is in full inert gas environment seal casinghousing 2.Feeding port 1
It is mounted on outside seal casinghousing, metal powder enters to dust feeder by its entrance.
Partition 18 is configured to for seal casinghousing 2 to be divided into upper cavity and lower chamber, hydraulic lifting frame 3, dot matrix resistance
Heating plate 4, dust feeder, movable supporting frame 17, power spreading device are arranged in upper cavity, and powder bed slot 11, is collected printing base station 12
Is arranged in lower chamber in bottle 10, lifter 13 and stepper motor 14
In conjunction with Fig. 1, dust feeder includes storage bin 5 and powder feeding component 6, and storage bin 5 has for accommodating metal powder
Cavity, cavity are connected to feeding port.The setting of powder feeding component 6 is in storage bin lower part, for receiving the metal powder conveyed from storage bin
End.
It is provided with a movable supporting frame 17 below dust feeder, is located on partition 18；Powder feeding component 17 is located at removable branch
In space defined by frame 17, the bottom discharge port of powder feeding component 17 closes on partition, to provide metal powder used in one layer of printing
End.
Power spreading device includes the roll compacting roller 7 and scraper 8 of a powdering, and scraper 8 is mounted on the bottom end of movable supporting frame, scraper
8 are configured to strike off the metal powder that dust feeder conveys in powder bed slot 11 with movable supporting frame synchronizing moving.Roll compacting
Roller 7 is arranged for being driven and rolling on partition, entire movable supporting frame 17 is driven to move, and will be taped against in powder bed slot
Compacted powder metal.
In conjunction with Fig. 1, powder bed slot 11 is located at partition lower position and concordant with partition after powdering, shape on partition therein
The identical slot of Cheng Youyu powder bed slot cross-section.In this way, metal powder from sending in 6 powder feeding to partition of part component, then passes through roll compacting roller 7
Movement, drive entire movable supporting frame 17 to move, metal powder struck off by powder by the scraper of 17 bottom of movable supporting frame
In bed slot 11, the powder bed slot 11 (containing one layer of metal powder of printing) after striking off is flushed with partition.Meanwhile scraper is further configured to
With movable supporting frame synchronizing moving, extra powder is pushed into accumulator tank 9.
In conjunction with Fig. 1, the lower section that base station 12 is fixed to powder bed slot is printed.Stepper motor 14 is mounted on the bottom of seal casinghousing,
In lower chamber；The output end of stepper motor 14 is connect with lifter 13, and the fortune up and down of lifter is driven by stepper motor
It is dynamic, the synchronization lifting of driving printing base station 12 and powder bed slot 11.
In this way, by built-in printing base station 12 in powder bed slot 11, inside there is stratie to can be used for powder bed
Printing preheating, powder bed are placed on base station 12, and it is accurately controlled by stepper motor 13 and lifter 14 and prints each layer
Thickness.
In conjunction with Fig. 1, the dot matrix powdering 3D printing device of the present embodiment further includes at least one set of powder recovering device, powder
Recyclable device has accumulator tank 9 and returnable bottle 10, and accumulator tank 9 is arranged below partition, and the lower section of accumulator tank 9 is fixed with returnable bottle
It 10 and is connected to returnable bottle, the position on partition corresponding to accumulator tank is provided with opening portion, so that metal powder is via accumulator tank
It regathers into returnable bottle 10.Preferably, the cross sectional shape of aforementioned opening portion and the upper oral part of accumulator tank are identical.
In conjunction with Fig. 1,2,3, dot matrix resistance heating plate 4 includes that densely arranged the modular of resistance heating needle composition adds
Thermal modules, each heating module is using programmable control and can individually be replaced, and multiple heating modules pass through programming control
Heating region processed.
As shown in connection with fig. 1,3D printing device of the invention, wherein hydraulic lifting frame 3 be fixed on the inside of seal casinghousing 2 and with
Dot matrix resistance heating plate 4, which is connected, to be controlled it and moves up and down, by 3 residence time of hydraulic lifting frame come accurate control points battle array
The action time of formula resistance heating plate 4 and powder.
Such as Fig. 1,3, the end face of dot matrix resistance heating plate 4 is that modularized design (such as Fig. 2 right figure) can damage different zones
Bad component is efficiently replaced, and 16 layers of high-temperature resistant aluminium oxide ceramic coating are coated with preferably on resistance heating needle, is kept away
Exempt from fusing metal and carries out adhesion with it.It is heated in resistance heating for the powder of contact when printing, while to peripheral region
Also it is heated, the area of powder heating depends on the type of material and the size (such as Fig. 3) of resistor power.
In preferred embodiment, dot matrix powdering 3D printing device has two groups of powder recovering devices above-mentioned, sets respectively
It sets in the two sides of powder bed slot, every group of powder recovering device is correspondingly arranged a scraper.
In conjunction with Fig. 1, power spreading device advance to the left carry out powdering when, hydraulic lifting frame drive dot matrix resistance heating plate it is upward
Mobile, when advance is resetted to the right under powdering system, hydraulic lifting frame drives dot matrix resistance heating plate to move down, into
Row 3D printing, therefore prevent from interfering when two powderings and print job.
In conjunction with Fig. 1, the bottom of storage bin 5 is higher than the horn-like receiving unit at the top of powder feeding component 6, to avoid power spreading device
In moving process (together with movable supporting frame), the two is collided and is interfered.
In conjunction with Fig. 1, first slope structure 51, the bottom setting of first slope structure are formed on the bottom of the inner cavity of storage bin 5
There are the first powder feeding idler wheel 52 and the first opening 53, is realized by the rotation of the first powder feeding idler wheel and at the uniform velocity transmit metal powder, passed through
First opening 31 is sent to powder feeding component.
Powder feeding group 6 with a horn-like receiving end 61 and the cushion chamber 62 being connected to receiving end, the fixed peace in receiving end
Mounted in the top of movable supporting frame, for receiving the metal powder transmitted from storage bin, the inside of cushion chamber to form second
Ramp structure 63, the bottom of the second ramp structure are provided with the second powder feeding idler wheel 64 and the second opening, pass through the second powder feeding idler wheel
Rotation realize at the uniform velocity transmit metal powder to partition on.Second opening has the elongate slot towards 17 direction of partition.
Preferably, the size of the second powder feeding idler wheel 64 is less than the first powder feeding idler wheel 52.
The 3D printing device of embodiment as shown in connection with fig. 1 uses the 3D printing working method of dot matrix powdering, specific to wrap
Include following steps:
After print procedure starts, the metal powder in storage bin is conveyed into a certain amount of metal powder by dust feeder,
And be made of power spreading device roll compacting roller and scraper and powder is struck off into compacting, extra powder then passes through scraper and blows off and collect to returning
Receive storage in bottle；
Wherein, when power spreading device advances to the left, hydraulic lifting frame drives dot matrix resistance heating plate to be moved upward to a little,
When powdering doctor blade system lower right is advanced and initial position is returned to, hydraulic lifting frame drives dot matrix resistance heating plate to move down
And contacted with powder bed, 3D printing is carried out, it is right for wanting shaped region to heat by the resistance heating on dot matrix resistance heating plate
Fusing makes the region powder melt or be sintered afterwards, and then slowly lifting dot matrix resistance heating plate is simultaneously stopped heating, this subsequent face
The whole forming of layer shaped region solidification finishes；
After to surface layer printing, printing base station is moved down using stepper motor and lifter, is then carried out newly
One layer of powder laying, roll-in and 3D printing, move in circles and increase new one layer of printing, until printing is completed.
By the above technical solution of the present invention as it can be seen that dot matrix powdering 3D printing device of the invention based on resistance using being added
The mode of heat, and realize that increasing material manufacturing prints using dot matrixed means, i.e., 3 d part is subjected to space lattice slice and divided
Afterwards, a face is first divided into the point of array and needs to print by the powder on base station in powder bed according to 3 d part monolayer slices
Region heating fusing or sintering obtain face molding, then gradually layer heap product straight forming.
3D printing device of the invention carries out 3D printing, has lower production cost and high production efficiency, significantly
The period that powdering printing prepares part is shortened, which also assures the forming accuracy of part, for relative complex part
Also it can print；It is changeable easily controllable further for the forming dimension of single part, it can be used for manufacturing more large-scale metal
Part has very strong adaptability.
Claims (13)
1. a kind of dot matrix powdering 3D printing device based on resistance heating, which is characterized in that including seal casinghousing, feeding port,
Hydraulic lifting frame, dot matrix resistance heating plate, dust feeder, movable supporting frame, power spreading device, powder bed slot, printing base station, every
Plate, lifter and stepper motor, in which:
For printing environment to be isolated from the outside, when printing, is in full inert gas environment the seal casinghousing；
The partition is configured to for seal casinghousing to be divided into upper cavity and lower chamber, the hydraulic lifting frame, dot matrix resistance
Heating plate, dust feeder, movable supporting frame, power spreading device be arranged in upper cavity, powder bed slot, printing base station, lifter and
Stepper motor is arranged in lower chamber；
The feeding port is mounted on outside seal casinghousing, and metal powder is entered in dust feeder by its entrance；
The dust feeder includes storage bin and powder feeding component, and the storage bin has the cavity for accommodating metal powder, institute
Cavity is stated to be connected to feeding port；The setting of powder feeding component is in storage bin lower part, for receiving the metal powder conveyed from storage bin；
It is provided with a movable supporting frame below the dust feeder, is located on partition；The powder feeding component is located at described removable
In space defined by bracket, the bottom discharge port of powder feeding component closes on partition, to provide metal powder used in one layer of printing；
The power spreading device includes the roll compacting roller and scraper of a powdering, and the scraper is mounted on the bottom end of movable supporting frame, institute
It states scraper to be configured to movable supporting frame synchronizing moving, the metal powder that dust feeder conveys is struck off into the powder bed slot
Interior, the roll compacting roller is arranged for being driven and rolling on partition, entire movable supporting frame is driven to move, and will be taped against
Compacted powder metal in powder bed slot, wherein powder bed slot position in partition lower position and after powdering it is concordant with partition, wherein
Slot identical with powder bed slot cross-section is formed on the partition；
The printing base station is fixed to the lower section of powder bed slot；
The stepper motor is mounted on the bottom of seal casinghousing, is located in lower chamber；The output end of the stepper motor and lifting
Device connection drives the up and down motion of lifter, the synchronization lifting of driving printing base station and powder bed slot by stepper motor.
2. the dot matrix powdering 3D printing device according to claim 1 based on resistance heating, which is characterized in that the point
Configuration powdering 3D printing device further includes at least one set of powder recovering device, and powder recovering device has accumulator tank and returnable bottle,
Accumulator tank setting is fixed with returnable bottle below partition, below accumulator tank and is connected to returnable bottle, corresponds on the partition
The position of accumulator tank is provided with opening portion, so that metal powder is regathered via accumulator tank into returnable bottle.
3. the dot matrix powdering 3D printing device according to claim 2 based on resistance heating, which is characterized in that described to open
The cross sectional shape of oral area and the upper oral part of accumulator tank are identical.
4. the dot matrix powdering 3D printing device according to claim 2 based on resistance heating, which is characterized in that described to scrape
Knife is further configured to strike off metal powder with movable supporting frame synchronizing moving and extra powder is pushed into accumulator tank
In.
5. the dot matrix powdering 3D printing device according to claim 4 based on resistance heating, which is characterized in that the point
Configuration powdering 3D printing device is separately positioned on the two sides of powder bed slot, every group of powder with powder recovering device described in two groups
Recyclable device is correspondingly arranged a scraper.
6. the dot matrix powdering 3D printing device according to claim 1 based on resistance heating, which is characterized in that the paving
Powder device advances to the left when carrying out powdering, and the hydraulic lifting frame drives dot matrix resistance heating plate to move up, when powdering is scraped
When advance is resetted to the right under knife system, hydraulic lifting frame drives dot matrix resistance heating plate to move down, and carries out 3D printing.
7. the dot matrix powdering 3D printing device described in any one of -6 based on resistance heating according to claim 1, special
Sign is that the dot matrix resistance heating plate includes the modular heating module of densely arranged resistance heating needle composition, often
A heating module is using programmable control and can individually be replaced, and the multiple heating module is heated by programming Control
Region.
8. the dot matrix powdering 3D printing device according to claim 7 based on resistance heating, which is characterized in that the electricity
It hinders and is coated with high-temperature resistant aluminium oxide ceramic coating in heating stylus.
9. the dot matrix powdering 3D printing device according to claim 1 based on resistance heating, which is characterized in that described to beat
Print base station is internally provided with stratie, to preheat to powder bed slot.
10. the dot matrix powdering 3D printing device according to claim 1 based on resistance heating, which is characterized in that described
First slope structure is formed on the bottom of the inner cavity of storage bin, and the bottom of first slope structure is provided with the first powder feeding idler wheel and first
Opening is realized by the rotation of the first powder feeding idler wheel and at the uniform velocity transmits metal powder to powder feeding component.
11. the dot matrix powdering 3D printing device according to claim 10 based on resistance heating, which is characterized in that described
The cushion chamber that powder feeding component has a horn-like receiving end and is connected to receiving end, the receiving end is fixedly mounted on removable
The top of bracket, for receiving the metal powder transmitted from storage bin, the inside of the cushion chamber to form the second slope knot
Structure, the bottom of the second ramp structure are provided with the second powder feeding idler wheel and the second opening, are realized by the rotation of the second powder feeding idler wheel
At the uniform velocity transmit on metal powder to partition.
12. the dot matrix powdering 3D printing device according to claim 10 based on resistance heating, which is characterized in that described
The size of second powder feeding idler wheel is less than the first powder feeding idler wheel.
13. the point of the dot matrix powdering 3D printing device described in any one of -12 based on resistance heating according to claim 1
Configuration powdering 3D printing method, which comprises the following steps:
After print procedure starts, the metal powder in storage bin is conveyed into a certain amount of metal powder by dust feeder, and by
Roll compacting roller and scraper constitute power spreading device and powder are struck off compacting, and extra powder then passes through scraper and blows off and collect to returnable bottle
Interior storage；
Wherein, when power spreading device advances to the left, hydraulic lifting frame drives dot matrix resistance heating plate to be moved upward to a little, pawnshop
When powder doctor blade system lower right is advanced and return to initial position, hydraulic lifting frame drive dot matrix resistance heating plate move down and with
Powder bed contact, carries out 3D printing, then molten for wanting shaped region to heat by the resistance heating on dot matrix resistance heating plate
Change make the region powder melt or sintering, then slowly lifting dot matrix resistance heating plate be simultaneously stopped heating, then this surface layer at
The forming of shape zone freezing entirety finishes；
After to surface layer printing, printing base station is moved down using stepper motor and lifter, then carries out new one layer
Powder laying, roll-in and 3D printing, move in circles and increase new one layer of printing, until printing is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460280.7A CN110153411B (en) | 2019-05-30 | 2019-05-30 | Dot matrix type powder paving 3D printing device and printing method based on resistance heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460280.7A CN110153411B (en) | 2019-05-30 | 2019-05-30 | Dot matrix type powder paving 3D printing device and printing method based on resistance heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110153411A true CN110153411A (en) | 2019-08-23 |
| CN110153411B CN110153411B (en) | 2024-04-05 |
Family
ID=67629896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910460280.7A Active CN110153411B (en) | 2019-05-30 | 2019-05-30 | Dot matrix type powder paving 3D printing device and printing method based on resistance heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110153411B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978507A (en) * | 2019-12-24 | 2020-04-10 | 安徽薄荷三维科技有限公司 | Powder paving device for full-color powder 3D printing |
| CN112247146A (en) * | 2020-09-28 | 2021-01-22 | 湖北华程三维科技有限公司 | Multi-material powder laying mechanism of metal three-dimensional printer |
| CN112264620A (en) * | 2020-11-07 | 2021-01-26 | 齐齐哈尔金车工业有限责任公司 | Simple 3D printing system with selective resistance heating |
| CN112846239A (en) * | 2020-12-28 | 2021-05-28 | 季华实验室 | Powder paving mechanism for large metal 3D printing equipment |
| CN113085187A (en) * | 2021-04-02 | 2021-07-09 | 东北林业大学 | Modularized powder consumable supply system for laser sintering |
| CN113441737A (en) * | 2021-06-28 | 2021-09-28 | 苏州倍丰激光科技有限公司 | Powder laying system used in additive manufacturing process |
| CN114474717A (en) * | 2021-12-28 | 2022-05-13 | 哈尔滨工业大学 | Powder bed cladding additive manufacturing device and method for constructing interplanetary base |
| CN115229204A (en) * | 2022-07-12 | 2022-10-25 | 广东樱井科技有限公司 | 3D printing method for machining shape following water channel of intelligent toilet |
| CN115519122A (en) * | 2022-10-31 | 2022-12-27 | 南京铖联激光科技有限公司 | Powder feeding device for SLM printer |
| CN117161407A (en) * | 2023-11-03 | 2023-12-05 | 天津市职业大学 | Metal 3D printer based on powder clearance structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6007646A (en) * | 1998-04-22 | 1999-12-28 | Korea Institute Of Machinery And Materials | Electrode material and methods for manufacturing electrode material and electrode |
| CN101224616A (en) * | 2007-12-18 | 2008-07-23 | 西安交通大学 | Fabricating method of dot matrix metal plastics foam compound material |
| WO2018000738A1 (en) * | 2016-06-28 | 2018-01-04 | 华南理工大学 | Internally disposed automatic coating device and method based on 3d printing of precious metal |
| CN210023772U (en) * | 2019-05-30 | 2020-02-07 | 南京尚吉智能装备科技有限公司 | Dot-matrix powder laying 3D printing device based on resistance heating |
-
2019
- 2019-05-30 CN CN201910460280.7A patent/CN110153411B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6007646A (en) * | 1998-04-22 | 1999-12-28 | Korea Institute Of Machinery And Materials | Electrode material and methods for manufacturing electrode material and electrode |
| CN101224616A (en) * | 2007-12-18 | 2008-07-23 | 西安交通大学 | Fabricating method of dot matrix metal plastics foam compound material |
| WO2018000738A1 (en) * | 2016-06-28 | 2018-01-04 | 华南理工大学 | Internally disposed automatic coating device and method based on 3d printing of precious metal |
| CN210023772U (en) * | 2019-05-30 | 2020-02-07 | 南京尚吉智能装备科技有限公司 | Dot-matrix powder laying 3D printing device based on resistance heating |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978507B (en) * | 2019-12-24 | 2022-04-15 | 安徽薄荷三维科技有限公司 | Powder paving device for full-color powder 3D printing |
| CN110978507A (en) * | 2019-12-24 | 2020-04-10 | 安徽薄荷三维科技有限公司 | Powder paving device for full-color powder 3D printing |
| CN112247146A (en) * | 2020-09-28 | 2021-01-22 | 湖北华程三维科技有限公司 | Multi-material powder laying mechanism of metal three-dimensional printer |
| CN112264620A (en) * | 2020-11-07 | 2021-01-26 | 齐齐哈尔金车工业有限责任公司 | Simple 3D printing system with selective resistance heating |
| CN112846239A (en) * | 2020-12-28 | 2021-05-28 | 季华实验室 | Powder paving mechanism for large metal 3D printing equipment |
| CN112846239B (en) * | 2020-12-28 | 2022-08-16 | 季华实验室 | Powder paving mechanism for large metal 3D printing equipment |
| CN113085187A (en) * | 2021-04-02 | 2021-07-09 | 东北林业大学 | Modularized powder consumable supply system for laser sintering |
| CN113085187B (en) * | 2021-04-02 | 2023-08-18 | 东北林业大学 | Modularized powder consumable supply system for laser sintering |
| CN113441737A (en) * | 2021-06-28 | 2021-09-28 | 苏州倍丰激光科技有限公司 | Powder laying system used in additive manufacturing process |
| CN113441737B (en) * | 2021-06-28 | 2023-10-03 | 苏州倍丰智能科技有限公司 | Powder spreading system for additive manufacturing process |
| CN114474717A (en) * | 2021-12-28 | 2022-05-13 | 哈尔滨工业大学 | Powder bed cladding additive manufacturing device and method for constructing interplanetary base |
| CN115229204A (en) * | 2022-07-12 | 2022-10-25 | 广东樱井科技有限公司 | 3D printing method for machining shape following water channel of intelligent toilet |
| CN115519122A (en) * | 2022-10-31 | 2022-12-27 | 南京铖联激光科技有限公司 | Powder feeding device for SLM printer |
| CN117161407A (en) * | 2023-11-03 | 2023-12-05 | 天津市职业大学 | Metal 3D printer based on powder clearance structure |
| CN117161407B (en) * | 2023-11-03 | 2024-03-26 | 天津市职业大学 | Metal 3D printer based on powder clearance structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110153411B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110153411A (en) | Dot matrix powdering 3D printing device and Method of printing based on resistance heating | |
| CN108687347B (en) | SLM3D printer | |
| US10730109B2 (en) | Method and apparatus for additive manufacturing with powder material | |
| US20080217802A1 (en) | Filling Method and Filling Apparatus of Powder-Particle Material in Compression Molding | |
| CN104010750A (en) | Machine and process for powder-based additive manufacturing | |
| EP0714333A1 (en) | Method and device for producing three-dimensional bodies | |
| WO2004037469A1 (en) | Method and apparatus for rapid manufacturing of metal, ceramic and metal-ceramic products | |
| CN213257100U (en) | Powder paving device for 3D printing equipment | |
| CN108393491A (en) | A kind of precinct laser fusion prepares the device of functionally graded material | |
| CN108123100A (en) | A kind of lithium electric material full-automatic production method and production line | |
| CN112958788A (en) | Selective laser melting device and method for powder composite feeding | |
| CN102225626A (en) | Full-automatic isostatic pressing machine for multi-station vertical-type rotary table | |
| CN210023772U (en) | Dot-matrix powder laying 3D printing device based on resistance heating | |
| EP2494005B1 (en) | Installation and method for producing a coal cake suitable for coking | |
| CN211762413U (en) | Forming device for producing red mud refractory bricks | |
| EP0688651A1 (en) | Injection molding machine and method for manufacturing hollow plastic articles | |
| CN107244060B (en) | Multifunctional in-mold labeling cup making production line | |
| CN102597169A (en) | Method and device for the successive production of coal briquettes compatible with a coke chamber | |
| CN1899785B (en) | Stock distributing device for ceramic forming press and stock distributing method using said stock distributing device | |
| CN100553942C (en) | Make the equipment of article by hot forming thermoplastic base sheet | |
| CN100569473C (en) | A kind of ceramic forming press distribution device and distributing method thereof | |
| CN210387587U (en) | 3D facing printer | |
| CN112045921B (en) | Separable feeding device for hot press molding of drum brake pad | |
| CN210789226U (en) | Powder falling and scraping device suitable for metal 3D printing of selective laser melting | |
| JP3786647B2 (en) | Die set for pulse current pressure sintering and pulse current pressure sintering system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |