CN108326305A - A kind of working cavity and its metal 3D printer of metal 3D printer - Google Patents
A kind of working cavity and its metal 3D printer of metal 3D printer Download PDFInfo
- Publication number
- CN108326305A CN108326305A CN201810358217.8A CN201810358217A CN108326305A CN 108326305 A CN108326305 A CN 108326305A CN 201810358217 A CN201810358217 A CN 201810358217A CN 108326305 A CN108326305 A CN 108326305A
- Authority
- CN
- China
- Prior art keywords
- pressure
- ontology
- explosion
- rupture disk
- metal
- 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.)
- Pending
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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
- 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
-
- 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
- B22F10/10—Formation of a green body
-
- 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
- B22F12/38—Housings, e.g. machine housings
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a kind of working cavity of metal 3D printer and its metal 3D printers, are related to printer technology field, its key points of the technical solution are that：Including hollow and closed ontology, it is characterised in that：The venting being connected with hollow portion is offered on the top of the ontology, it is provided with explosion-proof flange plate on the body, the pressure-relief explosion-proof mechanism for sealing the venting is provided between the explosion-proof flange plate and ontology, when the intrinsic pressure is more than predetermined value, pressure alarm indicator is alarmed, and the pressure-relief explosion-proof mechanism is formed with the opening for preventing the ontology from bursting and being connected with venting；By the way that corresponding pressure-relief explosion-proof mechanism is arranged on the body, have the function of improving the safety of its personnel operation.
Description
Technical field
The present invention relates to printer technology fields, more specifically, it relates to a kind of working cavity of metal 3D printer
And its metal 3D printer.
Background technology
3D printer is also known as three-dimensional printer, it is a kind of increases material manufacturing technology, i.e. a kind of machine of rapid prototyping technology；
It is one kind based on digital model file, is stacked up from level to level by material to manufacture three-dimensional object；And metal 3D
The most common method of printer is to use Selective Laser Sintering, is melted metal powder then in molten bath by laser
It is stacked up from level to level, forms the object with spatial impression.
And the working cavity of metal 3D printer is a confined space, gassy when work, have can bear it is certain
Pressure, temperature undertake the functions such as reaction, heat exchange, are consequently belonging to middle and low-pressure vessel；The cavity of current many 3D printers is not
Corresponding explosion-protection equipment is set, and when the work of metal 3D printer gassy this make cavity there are certain explosion wind
Danger, great security risk is brought to operating personnel.
Invention content
In view of the deficienciess of the prior art, purpose of the present invention one is to provide a kind of work of metal 3D printer
Cavity has the function of improving the safety of its personnel operation.
To achieve the above object, the present invention provides following technical solutions：
A kind of working cavity of metal 3D printer, including hollow and closed ontology, offer on the top of the ontology
The venting being connected with hollow portion is provided with explosion-proof flange plate on the body, the explosion-proof flange plate and ontology it
Between be provided with pressure-relief explosion-proof mechanism for sealing the venting, when the intrinsic pressure is more than predetermined value, pressure
Alarm is alarmed, and the pressure-relief explosion-proof mechanism is formed with the opening for preventing the ontology from bursting and being connected with venting.
So set, ontology is worked normally for metal 3D printer, by the way that venting is arranged on the body, and by letting out
Pressure anti-explosion mechanism is sealed in the closing that ontology is realized on venting；When gas pressure becomes larger suddenly in ontology, and pressure is more than pre-
When definite value, pressure alarm alarm, when pressure continues to increase, the opening that pressure-relief explosion-proof mechanism is formed is connected with venting,
Keep gas quick drainage external to this, the important optical element of effective protection equipment and prevent ontology explosion from injuring personnel, has
Improve the effect of the safety of its personnel operation.
Further setting：The pressure-relief explosion-proof mechanism is the rupture disk one towards extreme direction indent outside ontology, the rupture disk
The thickness at one middle part is gradually incremented by outward, and the maximum gauge of the rupture disk one is less than the thickness of ontology.
So set, due near one indent of rupture disk there are stress concentration, and the pressure and ontology of rupture disk one
The intensity of pressure of other edges is equal, thus the raising of body interior pressure and more than certain value when, rupture disk one destroy and
It is unfolded into opening, and is communicated with venting, keeps gas quick drainage external to this.
Further setting：Grooving is offered on inner face of the rupture disk one towards ontology, the grooving is set as working as
Pressure alarm indicator is alarmed when the pressure of body interior is increased beyond predetermined value, pressure rupture of rupture disk one when continuing to increase.
So set, by the way that grooving is arranged, make to form stress concentration at grooving, thus the height of body interior pressure is more than
When certain value, corresponding opening is formed when so that rupture disk one is destroyed along grooving.
Further setting：The grooving be provided with given interval it is a plurality of, and a plurality of grooving pass through rupture disk one
Axis.
So set, improving the whole uniform force of rupture disk one.
Further setting：The depth bounds of the grooving are less than 2/3rds of one minimum thickness of the rupture disk.
So set, when rupture disk one bears pressure more than fixation pressure, rupture disk one bursts to be formed accordingly along grooving
Opening, while again ensure rupture disk one kept when bulk density be in predetermined range ontology normal work.
Further setting：The pressure-relief explosion-proof mechanism is the rupture disk two to arch upward towards extreme direction outside ontology, in the explosion
Piece two towards offering explosion slot on the inner face of ontology, the explosion slot be set as when the pressure of body interior be increased beyond it is predetermined
Pressure alarm indicator is alarmed when value, pressure rupture of rupture disk two when continuing to increase.
So set, since rupture disk two arches upward setting towards extreme direction outside ontology, make near the place that arches upward of its rupture disk two
There are stress concentrations, and the pressure of rupture disk two is equal with other edge intensities of pressure in ontology, thus body interior pressure
The raising of power and when more than certain value, rupture disk two destroys and is unfolded into opening, and is communicated with venting, and gas is made quickly to draw
It is external to flow to this.
Further setting：The explosion slot be provided with given interval it is a plurality of, and a plurality of explosion slot pass through explosion
The axis of piece two.
So set, improving the whole uniform force of rupture disk two.
Further setting：The depth bounds of the explosion slot are less than 2/3rds of two thickness of the rupture disk.
So set, when rupture disk two bears pressure more than fixation pressure, rupture disk two bursts to form phase along explosion slot
The opening answered, while ensureing that rupture disk two keeps ontology to work normally when bulk density is in predetermined range again.
Further setting：It is provided with seal washer between the venting and explosion-proof flange plate.
So set, improving the sealing performance between ontology and explosion-proof flange plate, pressure-relief explosion-proof mechanism.
Purpose of the present invention one is to provide a kind of metal 3D printer have the safety for improving its personnel operation
Effect.
A kind of metal 3D printer includes the working cavity of above-mentioned metal 3D printer.
So set, the ontology by being provided with decompression anti-explosion device, improves the usage safety performance of metal 3D printer,
And then improve the effect of the safety of its personnel operation.
By using above-mentioned technical proposal, the present invention compares compared with the prior art：By the way that decompression anti-explosion device is arranged, at this
Body running gas pressure becomes larger suddenly, and when pressure is far beyond design value, by outside gas quick drainage to equipment, effective protection
The important optical element of equipment and prevent ontology explosion injure personnel；This cavity body structure is simple, has not only certainly solved metal 3D printing
The technical issues of machine cavity body pressure-relief explosion-proof, and by the pressure release of different degree, both met the use of cavity at work
It is required that further reducing cavity in personnel's operation occurs unexpected risk.
Description of the drawings
Fig. 1 is the structural schematic diagram of the working cavity of metal 3D printer；
Fig. 2 is the partial exploded view of the working cavity of metal 3D printer；
Fig. 3 is the sectional view at the working cavity pressure-relief explosion-proof mechanism of metal 3D printer；
Fig. 4 is the sectional view at pressure-relief explosion-proof mechanism in embodiment 1；
Fig. 5 is the local display diagram at pressure-relief explosion-proof mechanism in embodiment 1；
Fig. 6 is the sectional view at pressure-relief explosion-proof mechanism in embodiment 2；
Fig. 7 is the local display diagram at pressure-relief explosion-proof mechanism in embodiment 3.
In figure：1, ontology；11, safety valve；12, silencer；13, emptying switch；14, venting；2, explosion-proof flange plate；3、
Pressure-relief explosion-proof mechanism；31, rupture disk one；311, grooving；32, rupture disk two；321, explosion slot；33, rupture disk three；331, it leads
Slot；4, seal washer；5, bolt；6, pressure alarm indicator.
Specific implementation mode
The working cavity to metal 3D printer and its metal 3D printer are described further referring to Figure 1 to Figure 7.
Embodiment 1：A kind of working cavity of metal 3D printer, as shown in Figure 1, include hollow and closed ontology 1, this
Body 1 is any one in ellipse, polygon, circle, and the sidewall thickness of ontology 1 is equivalent.
As shown in Figure 1, wherein safety valve 11 and silencer 12 are installed on ontology 1, effect is to work when ontology 1
When, gas pressure, flowed fluctuation a small range are adjusted.Emptying switch 13 is installed on ontology 1, effect is ontology
1 when being stopped, and opens the valve of emptying switch 13, the function of Quick air-discharge row pressure.Pressure alarm indicator is installed on ontology 1
6, effect is that pressure alarm indicator 6 is alarmed when the pressure inside ontology 1 is increased beyond predetermined value.Safety valve 11, silencer 12, pressure
Power alarm 6 and emptying switch 13 are installed in any one place for not interfering with other equipment of the top of ontology 1, and do not exist
Personnel's operating area, connection type are the connection of cone seal pipe screw thread.
As shown in Fig. 2, offering the venting 14 being connected with hollow portion on the top of ontology 1, it is arranged on ontology 1
There is explosion-proof flange plate 2, the pressure-relief explosion-proof mechanism 3 for sealed explosion-proof mouth 14 be provided between explosion-proof flange plate 2 and ontology 1,
And when the pressure in ontology 1 is more than predetermined value, pressure alarm indicator 6 is alarmed, and pressure-relief explosion-proof mechanism 3 is formed with prevents ontology 1
Explosion and the opening being connected with venting 14.
In conjunction with shown in Fig. 3 and Fig. 4, pressure-relief explosion-proof mechanism 3 is the rupture disk 1 towards 1 outer extreme direction indent of ontology, indent
Form is spherical shape, that is, the thickness at one 31 middle part of rupture disk is gradually incremented by outward, and the maximum gauge of rupture disk 1 is less than ontology
1 thickness.
In conjunction with shown in Fig. 4 and Fig. 5, grooving 311 is offered on inner face of the rupture disk 1 towards ontology 1, grooving 311
Depth bounds are less than 2/3rds of one 31 minimum thickness of rupture disk, and grooving 311 is set as the pressure inside ontology 1 and rises
Pressure alarm indicator 6 is alarmed when more than predetermined value, and rupture disk 1 ruptures when pressure continues to increase.Grooving 311 is set with given interval
Be equipped with it is a plurality of, and a plurality of grooving 311 pass through rupture disk 1 on indent axis.
In conjunction with shown in Fig. 4 and Fig. 5, seal washer 4, and explosion-proof method are provided between venting 14 and explosion-proof flange plate 2
Blue piece 2 is fixed on by bolt 5 on ontology 1.
Embodiment 2：A kind of working cavity of metal 3D printer is let out as shown in fig. 6, difference from Example 1 is
Pressure anti-explosion mechanism 3 be the rupture disk 2 32 of setting of arching upward towards 1 outer extreme direction of ontology, that is, rupture disk 2 32 is arc-shaped, and quick-fried
The whole uniform thickness setting of fragmentation 2 32.
Explosion slot 321 is offered on inner face of the rupture disk 2 32 towards ontology 1, explosion slot 321 is set as when in ontology 1
Pressure alarm indicator 6 is alarmed when the pressure in portion is increased beyond predetermined value, and rupture disk 2 32 ruptures when pressure continues to increase, and explosion slot
321 depth bounds are less than 2/3rds of 2 32 thickness of rupture disk.Explosion slot 321 is provided with a plurality of and more with given interval
Explosion slot 321 passes through the axis of rupture disk 2 32.
Embodiment 3：A kind of working cavity of metal 3D printer is let out as shown in fig. 7, difference from Example 1 is
It is the rupture disk 3 33 being sealed at venting 14 to press anti-explosion mechanism 3, that is, rupture disk 3 33 is flat plate, and rupture disk 3 33
Whole uniform thickness setting.
Guide groove 331 is offered on inner face of the rupture disk 3 33 towards ontology 1, guide groove 331 is set as inside ontology 1
Pressure alarm indicator 6 is alarmed when pressure is increased beyond predetermined value, and rupture disk 3 33 ruptures when pressure continues to increase, and guide groove 331
Depth bounds are less than 2/3rds of 3 33 thickness of rupture disk.Guide groove 331 is provided with a plurality of, and a plurality of guide groove with given interval
331 crisscross settings.
Operation principle：When rupture disk 1, rupture disk 2 32 and the effect of rupture disk 3 33 are that ontology 1 works, when this
Pressure alarm indicator 6 is alarmed when pressure inside body 1 is increased beyond predetermined value, when pressure continues to increase, rupture disk 1 or explosion
Piece 2 32 or the rupture of 3 33 moment of rupture disk, by outside gas quick drainage to ontology 1, the important optical element of effective protection equipment with
And prevent the explosion of ontology 1 from injuring personnel；It is arbitrary that rupture disk 1 or rupture disk 2 32 or rupture disk 3 33 are mounted on cavity surrounding
Position, but be oriented and be directed toward the unmanned region entered, once accident occurs, rupture disk 1 or rupture disk 2 32 or rupture disk three
33 ruptures, gas fly out, prevent from hurting personnel.
Embodiment 4：Any one metal 3D in a kind of metal 3D printer, including embodiment 1, embodiment 2 or embodiment 3
The working cavity of printer.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of working cavity of metal 3D printer, including hollow and closed ontology（1）, it is characterised in that：At described
Body（1）Top on offer the venting being connected with hollow portion（14）, in the ontology（1）On be provided with explosion-proof flange plate
（2）And pressure alarm indicator（6）, in the explosion-proof flange plate（2）With ontology（1）Between be provided with for sealing the venting
（14）Pressure-relief explosion-proof mechanism（3）, when the ontology（1）When interior pressure is more than predetermined value, pressure alarm indicator（6）Alarm, and
The pressure-relief explosion-proof mechanism（3）Being formed with prevents the ontology（1）Explosion and and venting（14）The opening being connected.
2. a kind of working cavity of metal 3D printer according to claim 1, it is characterised in that：The pressure-relief explosion-proof machine
Structure（3）For towards ontology（1）The rupture disk one of outer extreme direction indent（31）, the rupture disk one（31）The thickness at middle part is gradual outward
It is incremented by, and the rupture disk one（31）Maximum gauge be less than ontology（1）Thickness.
3. a kind of working cavity of metal 3D printer according to claim 2, it is characterised in that：In the rupture disk one
（31）Towards ontology（1）Inner face on offer grooving（311）, the grooving（311）It is set as working as ontology（1）Internal pressure
Pressure alarm indicator when being increased beyond predetermined value（6）Alarm, pressure rupture disk one when continuing to increase（31）Rupture.
4. a kind of working cavity of metal 3D printer according to claim 3, it is characterised in that：The grooving（311）
A plurality of, and a plurality of grooving is provided with given interval（311）Pass through rupture disk one（31）Axis.
5. a kind of working cavity of metal 3D printer according to claim 4, it is characterised in that：The grooving（311）
Depth bounds be less than the rupture disk one（31）2/3rds of minimum thickness.
6. a kind of working cavity of metal 3D printer according to claim 1, it is characterised in that：The pressure-relief explosion-proof machine
Structure（3）For towards ontology（1）The rupture disk two that outer extreme direction arches upward（32）, in the rupture disk two（32）Towards ontology（1）Inner end
Explosion slot is offered on face（321）, the explosion slot（321）It is set as working as ontology（1）Internal pressure is increased beyond predetermined value
When pressure alarm indicator（6）Alarm, pressure rupture disk two when continuing to increase（32）Rupture.
7. a kind of working cavity of metal 3D printer according to claim 6, it is characterised in that：The explosion slot
（321）A plurality of, and a plurality of explosion slot is provided with given interval（321）Pass through rupture disk two（32）Axis.
8. a kind of working cavity of metal 3D printer according to claim 7, it is characterised in that：The explosion slot
（321）Depth bounds be less than the rupture disk two（32）2/3rds of thickness.
9. a kind of working cavity of metal 3D printer according to claim 1, it is characterised in that：In the venting
（14）With explosion-proof flange plate（2）Between be provided with seal washer（4）.
10. a kind of metal 3D printer, it is characterised in that：Include that metal 3D as described in any one of claim 1-9 is beaten
The working cavity of print machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358217.8A CN108326305A (en) | 2018-04-20 | 2018-04-20 | A kind of working cavity and its metal 3D printer of metal 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358217.8A CN108326305A (en) | 2018-04-20 | 2018-04-20 | A kind of working cavity and its metal 3D printer of metal 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108326305A true CN108326305A (en) | 2018-07-27 |
Family
ID=62933535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810358217.8A Pending CN108326305A (en) | 2018-04-20 | 2018-04-20 | A kind of working cavity and its metal 3D printer of metal 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108326305A (en) |
Citations (8)
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|---|---|---|---|---|
| GB8307956D0 (en) * | 1983-03-23 | 1983-04-27 | Johnson Matthey Plc | Bursting discs |
| US20080053527A1 (en) * | 2006-08-24 | 2008-03-06 | Eco Rupture Disc Limited | Bursting disc assembly |
| RU2015115761A (en) * | 2015-04-27 | 2016-11-20 | Олег Савельевич Кочетов | EXPLOSION PROTECTOR OF KOCHETOV WITH A BREAKABLE MEMBRANE OF THE FLANGE JOINT |
| CN106424748A (en) * | 2016-12-03 | 2017-02-22 | 东北大学 | Alloyed spherical powder preparation device and method for laser 3D (three-dimensional) printing |
| CN106513674A (en) * | 2016-09-20 | 2017-03-22 | 南京航空航天大学 | Shielding gas circulating filtration device for 3D printing metal powder bed forming cavity and optimization method of shielding gas circulating filtration device |
| CN206108066U (en) * | 2016-08-31 | 2017-04-19 | 山东华建仓储装备科技有限公司 | Explosion -proof flame -retardant safety monitoring system of large -scale former coal bunker |
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-
2018
- 2018-04-20 CN CN201810358217.8A patent/CN108326305A/en active Pending
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|---|---|---|---|---|
| GB8307956D0 (en) * | 1983-03-23 | 1983-04-27 | Johnson Matthey Plc | Bursting discs |
| US20080053527A1 (en) * | 2006-08-24 | 2008-03-06 | Eco Rupture Disc Limited | Bursting disc assembly |
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| CN206108066U (en) * | 2016-08-31 | 2017-04-19 | 山东华建仓储装备科技有限公司 | Explosion -proof flame -retardant safety monitoring system of large -scale former coal bunker |
| CN106513674A (en) * | 2016-09-20 | 2017-03-22 | 南京航空航天大学 | Shielding gas circulating filtration device for 3D printing metal powder bed forming cavity and optimization method of shielding gas circulating filtration device |
| CN106424748A (en) * | 2016-12-03 | 2017-02-22 | 东北大学 | Alloyed spherical powder preparation device and method for laser 3D (three-dimensional) printing |
| CN107651333A (en) * | 2017-10-28 | 2018-02-02 | 广东拓丰实业有限公司 | A kind of explosion-proof biomass fuel equipment |
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| Title |
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