CN107214337A - Gas shield device for operation window - Google Patents
Gas shield device for operation window Download PDFInfo
- Publication number
- CN107214337A CN107214337A CN201710602636.7A CN201710602636A CN107214337A CN 107214337 A CN107214337 A CN 107214337A CN 201710602636 A CN201710602636 A CN 201710602636A CN 107214337 A CN107214337 A CN 107214337A
- Authority
- CN
- China
- Prior art keywords
- window mirror
- window
- air cavity
- mixed air
- fixed seat
- 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
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 9
- 229910052755 nonmetal Inorganic materials 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000000889 atomisation Methods 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000000110 selective laser sintering Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/70—Gas flow means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The gas shield device for operation window of the present invention, including window mirror fixed seat, window mirror, mixed air cavity dividing plate, deflector, window mirror pressing plate, quick union, tracheae and braid, window mirror is fixed in window mirror fixed seat by window mirror pressing plate, tracheae is attached to gas shield device by quick union, mixed air cavity is formed by window mirror fixed seat with mixed air cavity dividing plate, the braid being arranged in mixed air cavity is configured to be atomized the gas entered by tracheae so that gas can be dispersed in mixed air cavity, away from length air flue of the length equal to window mirror that the window mirror side and section vertical with the airflow direction for being blown to window mirror that be provided with direction is strip on mixed air cavity dividing plate, deflector, mixed air cavity dividing plate, window mirror fixed seat constitutes slit, the gas blown out with will pass through air flue from mixed air cavity can uniformly blow out to form jet, for dispelling the powder that powder bed 3D printer raises up in process, all kinds of analytes.
Description
Technical field
The invention belongs to material increasing field, more particularly to a kind of gas shield device for operation window.
Background technology
In the course of work of powder bed 3D printer, laser enters after scanner through window mirror in processing cabin
Powder plane is scanned according to computer section figure, and processing is filled with dust granules and small molecule organic gas in cabin,
Dust granules are polluted with micro-molecular gas to laser system causes the damage of optical element, so that during causing 3D printing
There are quality problems in the part printed.In order to prevent the dust processed in cabin and small molecule organic gas from entering laser system
Closed chamber, sealing device is provided between laser system closed chamber and processing cabin；Simultaneously in order that laser can reach powder
Plane is processed operation, and the laser beam between laser system closed chamber and processing cabin needs to install one in the range of
Piece can efficiently project the window mirror of laser by what ZnSe crystal was made, described during the use of Selective Laser Sintering
The problem of window mirror by dust and micro-molecular gas there is also being polluted.Therefore, when exposed to dust or other pollutant operating mode rings
When in border, window mirror needs to be protected.
Generally it is utilized in during Selective Laser Sintering use and is passed through protective gas and carries out window mirror protection, it is existing
Have and a kind of selective laser fusing window mirror protection device is disclosed in technology, the window mirror protection core and window mirror of interconnection are protected
Being formed between sheath in the gas outlet of venting cavity and opening towards window mirror, window mirror protection device has air inlet, air inlet
Mouth, venting cavity and gas outlet are interconnected, and the relative axial position of protection core and protective case can adjust to change gas outlet
Openings of sizes；A kind of selective laser fusing window mirror protection device is also disclosed in the prior art, and the gas flow does not exist
The inside of part and formed in the space folded by protection core and protective case part outer surface.Defect of the prior art is nothing
Method equably controls the air-flow in exit.Thus, it is desirable to present in a kind of working environment for having dust or an other gaseous contaminants
The gas shield device that uniform air flow is protected to watch window or operation window can be sprayed, it can be applied to powder bed 3D
The scanner protecting window mirror of printer or the gas shield of field lens.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of gas shield device for operation window, uniform air flow can be sprayed
Watch window or operation window are protected, in the working environment for having dust or other gaseous contaminants, it passes through braid
With mixed air cavity dividing plate be implemented in combination be pointed to during the use of Selective Laser Sintering laser system closed chamber and
Laser beam between processing cabin needs the purpose for the window mirror progress gas shield installed in the range of, it is to avoid window
The problem of mirror is polluted by dust and micro-molecular gas.
Technical scheme is as follows：
A kind of gas shield device for operation window, it include window mirror fixed seat, window mirror, mixed air cavity dividing plate,
Deflector, window mirror pressing plate, quick union, tracheae and braid, the window mirror are fixed on institute by the window mirror pressing plate
Window mirror fixed seat is stated, the window mirror fixed seat mounting surface is provided with strong magnetic column and window mirror sealing ring；The tracheae leads to
Cross the quick union and be attached to gas shield device；Mixed air cavity is formed by the window mirror fixed seat with mixed air cavity dividing plate, and
The floor space S1 of the mixed air cavity is at least being located at 3 times of the air flue area S2 at the mixed air cavity；The braid is
Metal braid and/or non-metal knitted thing, it is configured to be atomized so that gas the gas entered by tracheae
Body can be dispersed in the mixed air cavity；Direction is provided with blowing away from the window mirror side on the mixed air cavity dividing plate
Airflow direction to the window mirror is vertical and section is the air flue of strip, and the length of the air flue is equal to the window mirror
Length；The deflector, mixed air cavity dividing plate and window mirror fixed seat surround to form slit, will pass through air flue from the mixed air cavity
The gas of middle blowout uniformly can blow out to form jet.
Preferably, the window mirror pressing plate is closed-in construction, and closed-in construction has equally distributed first hole, described first
Hole is configured to fastener and is fixed on the window mirror in window mirror fixed seat by window mirror pressing plate；The window mirror
Fixed seat is the tower structure with two-stage stepped ramp type structure, and first step is configured to support window mirror, second level step
It is configured to support window mirror pressing plate.
Preferably, the first surface of the window mirror fixed seat, second surface and the 3rd surface and the mixed air cavity dividing plate
Upper surface between form the cavity for being configured for use as mixed air cavity, and the braid is arranged in the mixed air cavity.
Preferably, the height of the slit is 0.3-1.5mm, to prevent the narrow formation turbulent flow of slit width or slit wide
Spend width and cause gas flow purging less than the window mirror.
Preferably, the braid is metal braid, and the mesh number of the metal braid is between 50-200.
Preferably, the number of plies of the braid is 2 layers to 5 layers.
Preferably, the braid is that the thickness of non-metal knitted thing and the non-metal knitted thing is at least 1mm.
Preferably, direction of the deflector away from the window mirror with window mirror fixed seat junction there is height to be H
Boss constitute slit, the following table of the window mirror fixed seat so as to the deflector, mixed air cavity dividing plate and window mirror fixed seat
The lower surface of face and mixed air cavity dividing plate is in same level, and the mixed air cavity dividing plate is fixed on window mirror fixed seat lower surface
The groove extended to window mirror fixed seat body in, the boss is no more than mixed air cavity dividing plate towards the edge of window mirror side
On air flue remote window mirror direction side edge.
Preferably, the upper surface of the deflector is horizontal plane, and the upper surface of the deflector is away from the window mirror
Direction be connected with the lower surface of the window mirror fixed seat, the mixed air cavity dividing plate is fixed under the window mirror fixed seat
In the groove that surface extends to the window mirror fixed seat body, and the lower surface of the mixed air cavity dividing plate is fixed with the window
There is height difference H between the lower surface of seat1, so that the deflector, mixed air cavity dividing plate and window mirror fixed seat constitute slit.
Preferably, side of the window mirror fixed seating near the window mirror is provided with solid along the window mirror
The height of reservation body direction extension is H2Opening, so that the air-flow blown out from the slit can blow to the window mirror.
Compared with prior art, the invention has the advantages that：
The gas shield device for operation window in the present invention, it uses the combination of braid and mixed air cavity dividing plate real
The laser beam between laser system closed chamber and processing cabin is pointed to during the use for having showed Selective Laser Sintering
The window mirror installed in the range of is needed to carry out gas shield, it is to avoid window mirror is polluted by dust and micro-molecular gas
Problem.
Brief description of the drawings
Below in conjunction with accompanying drawing, technical scheme is described in detail.
Fig. 1 is mixed gas, the jet process structural representation of the gas shield device for operation window according to the present invention.
Fig. 2 is the explosive view of the gas shield device for operation window according to the present invention.
Fig. 3 is the top view of the gas shield device for operation window according to the present invention.
Fig. 4 is the sectional view of the gas shield device for operation window according to the present invention.
Fig. 5 is the air-flow transverse jet schematic diagram of the gas shield device for operation window according to the present invention.
Embodiment
Describe exemplary embodiment, feature and the aspect of the present invention in detail below with reference to accompanying drawing.Identical is attached in accompanying drawing
Icon note represents the same or analogous element of function.Although the various aspects of embodiment are shown in the drawings, unless special
Do not point out, it is not necessary to accompanying drawing drawn to scale.Present inventive concept is derived from the theoretical guidance of innovative approach.
The gas shield device 100 for operation window of the embodiment of the present invention as shown in Fig. 1 to 5, it includes window
Mouth mirror fixed seat 1, window mirror 2, mixed air cavity dividing plate 3, deflector 4, window mirror pressing plate 5, quick union 6, tracheae 7 and braid 8.
Tracheae 7 is attached to gas shield device 100 by quick union 6, mixes air cavity 9 by window mirror fixed seat 1 and mixed gas
Chamber dividing plate 3 is formed.Preferably, the floor space S1 for mixing air cavity 9 is at least being located at 3 times of the area S2 of air flue 10 at mixed air cavity 9.Compile
Fabric 8 is configured to be atomized the gas entered by tracheae 7, so that gas can uniformly divide in mixed air cavity 9
Dissipate.
Preferably, braid 8 is metal braid, such as screen cloth.
Preferably, the mesh number of metal braid is between 50-200.
Preferably, the number of plies of metal braid is 2 layers to 5 layers.
Preferably, braid 8 is non-metal knitted thing, for example, the absorbent cotton of good air permeability, absorbent cotton is fluffy in nature
Thickness under state is at least 1mm, for example, thickness is 4mm.
Preferably, braid 8 is the conjugate of metal braid and non-metal knitted thing.
Window mirror pressing plate 5 is closed-in construction, and closed-in construction has equally distributed first hole 51, and the first hole 51 is configured to
Window mirror 2 is fixed in window mirror fixed seat 1 by window mirror pressing plate 5 by fastener.
Window mirror fixed seat 1 is the tower structure with two-stage stepped ramp type structure, and first step 11 is configured to support
Window mirror 2, second level step 12 is configured to support window mirror pressing plate 5；The upper surface 13 of window mirror fixed seat 1 has air admission hole
14, it, which is configured to coordinate with quick union 6, installs tracheae 7；The lower surface 15 of window mirror fixed seat 1, which has, to be used to accommodate mixed gas
The groove 16 of chamber dividing plate 3.
First surface 17, the surface 19 of second surface 18 and the 3rd and the upper surface of mixed air cavity dividing plate 3 of window mirror fixed seat 1
The cavity for being configured for use as mixed air cavity 9 is formed between 31, braid 8 is arranged in mixed air cavity 9.
On mixed air cavity dividing plate 3 away to be provided with direction vertical with the airflow direction for being blown to window mirror 4 side of window mirror 4 and section
Face is the air flue 10 of strip, and the length of air flue 10 is equal to the length of window mirror 4.
Deflector 4, mixed air cavity dividing plate 3 and window mirror fixed seat 1 constitute slit 20, will pass through air flue 10 from mixed air cavity 9
The gas of middle blowout uniformly can blow out to form jet, for dispelling the powder that powder bed 3D printer raises up in process
Last, all kinds of analytes.
Preferably, gas flow purging is caused less than window in order to avoid the narrow formation of the width of slit 20 is turbulent or slit width is wide
Mouth mirror, the height of slit 20 is 0.3-1.5mm.
Direction of the deflector 4 away from window mirror 2 and the junction of window mirror fixed seat 1 have height for H boss 41 so as to
Deflector 4, mixed air cavity dividing plate 3 and window mirror fixed seat 1 constitute slit 20, the lower surface 15 and mixed air cavity of window mirror fixed seat 1
The lower surface 32 of dividing plate 3 is in same level, and mixed air cavity dividing plate 3 is fixed on window mirror fixed seat 1 by threaded fastener
In the groove to the extension of window mirror fixed seat body of lower surface, boss 41 is no more than mixed gas towards the edge of the side of window mirror 2
The edge of the remote window mirror direction side of air flue 10 on chamber dividing plate 3.
The gas shield device for operation window according to another embodiment of the present invention, it includes window mirror fixed seat
1st, window mirror 2, mixed air cavity dividing plate 3, deflector 4, window mirror pressing plate 5, quick union 6, tracheae 7 and braid 8.
Tracheae 7 is attached to gas shield device 100 by quick union 6, mixes air cavity 9 by window mirror fixed seat 1 and mixed gas
Chamber dividing plate 3 is formed.Preferably, the floor space S1 for mixing air cavity 9 is at least being located at 3 of the gas vent sectional area S2 at mixed air cavity 9
Times.Braid 8 is configured to be atomized the gas entered by tracheae 7, so that gas can be in mixed air cavity 9
It is even scattered.
Preferably, braid 8 is metal braid, such as screen cloth.
Preferably, the mesh number of metal braid is between 50-200.
Preferably, the number of plies of metal braid is 2 layers to 5 layers.
Preferably, braid 8 is non-metal knitted thing, for example, the absorbent cotton of good air permeability, absorbent cotton is fluffy in nature
Thickness under state is thick for 4mm.
Preferably, braid 8 is the conjugate of metal braid and non-metal knitted thing.
Window mirror pressing plate 5 is closed-in construction, and closed-in construction has equally distributed first hole 51, and the first hole 51 is configured to
Window mirror 2 is fixed in window mirror fixed seat 1 by window mirror pressing plate 5 by fastener.
Window mirror fixed seat 1 is the tower structure with two-stage stepped ramp type structure, and first step 11 is configured to support
Window mirror, second level step 12 is configured to support window mirror pressing plate 5；The upper surface of window mirror fixed seat 1 has the second hole, its
It is configured to coordinate with quick union 6 and tracheae 7 is installed；The lower surface of window mirror fixed seat 1, which has, to be used to accommodate mixed air cavity dividing plate 3
The 3rd step surface.
First surface 17, the surface 19 of second surface 18 and the 3rd and the upper surface of mixed air cavity dividing plate 3 of window mirror fixed seat 1
The cavity for being configured for use as mixed air cavity 9 is formed between 31, braid 8 is arranged in mixed air cavity 9.
On mixed air cavity dividing plate 3 away to be provided with direction vertical with the airflow direction for being blown to window mirror 2 side of window mirror 2 and section
Face is the air flue 10 of strip, and the length of air flue 10 is equal to the length of window mirror 2.
Deflector 4, mixed air cavity dividing plate 3 and window mirror fixed seat 1 constitute slit 20, will pass through air flue 10 from mixed air cavity 9
The gas of middle blowout uniformly can blow out to form jet, for dispelling the powder that powder bed 3D printer raises up in process
Last, all kinds of analytes.
Preferably, gas flow purging is caused less than window in order to avoid the narrow formation of slit width is turbulent or slit width is wide
Mirror 2, the height of slit 20 is 0.3-1.5mm.
The upper surface of deflector 4 is horizontal plane, and the upper surface of deflector 4 is consolidated in the direction away from window mirror 2 with window mirror
The lower surface of reservation 1 is connected, and mixed air cavity dividing plate 3 is fixed on the following table of window mirror fixed seat 1 towards window by threaded fastener
In the groove of the body of mirror fixed seat 1 extension, and have between the lower surface of mixed air cavity dividing plate 3 and the lower surface of window fixed seat 1
Height difference H1, so that deflector 4, mixed air cavity dividing plate 3 and window mirror fixed seat 1 constitute slit, window mirror fixed seat 1 is located at window
It is H that side near mirror 2, which is provided with the height extended along the body direction of window mirror fixed seat 1,2Opening, so as to from slit
The air-flow of blowout can blow to window mirror 2.
In the course of work, protective gas tracheae with default pressure and preset flow enter by window mirror fixed seat 1 with
In the mixed air cavity 9 of the mixed composition of air cavity dividing plate 3, the floor space for mixing air cavity 9 is more than the gas vent section being located on mixed air cavity dividing plate
Long-pending 3 times, it is preferable that charge flow rate is 14-16L, to avoid the very few purging of air inflow excessive less than window mirror or air inflow
The problem of wasting gas.
Gas enters after mixed air cavity 9, is stopped by braid 8, is atomized after air-flow is broken up.Preferably, compile
Fabric 8 is screen cloth, and braid mesh number is 50-200, and the number of plies of braid is 2 layers to 5 layers.Said flow is equal in mixed air cavity 9
Pressure, then blows out from the section on mixed air cavity dividing plate 3 for the air flue of strip.Under the effect of deflector 4, air-flow is from water conservancy diversion
Uniformly blown out in the slit 20 that plate 4, mixed air cavity dividing plate 3 and window mirror fixed seat 1 are constituted, form jet.
Preferably, the size of slit 20 is 0.3-1.5mm, it is to avoid the narrow formation turbulent flow of slit sizes or slit sizes are wide
Gas flow purging is less than window mirror.
As depicted in figs. 1 and 2, window mirror 2 is depressed into window mirror fixed seat 1 and is screwed by window mirror pressing plate 5,
Sealed on faying face with window mirror sealing ring 30, it is configured to prevent that undue force from damaging window mirror by pressure or window mirror is pressed against not
Firmly the problem of.
As shown in Fig. 2 when gas shield device is installed, there is four strong magnetic of cylinder on the mounting surface of window mirror fixed seat 1
Column 40.Strong magnetic column 40 is compressed by a briquetting afterwards first with mounting surface adhesive simply to be fixed during installation.
Installing faying face sets window mirror sealing ring 30 to separate Processing Room and Laser room, prevents powder from causing dirt into Laser room
Dye.
When the when deflector of gas to jet in the plane of whole protection device extends, form one and put down less than gas flow purging
The baffle plate in face, can stop and be dissipated when air-flow is produced by boasting, it is possible to reduce gas consumption.
Finally it should be noted that：Above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or substitutions, the essence of appropriate technical solution is departed from various embodiments of the present invention technical side
The scope of case.
Claims (10)
1. a kind of gas shield device for operation window, it includes window mirror fixed seat, window mirror, mixes air cavity dividing plate, leads
Flow plate, window mirror pressing plate, quick union, tracheae and braid, it is characterised in that：
The window mirror is fixed on the window mirror fixed seat, the window mirror fixed seat mounting surface by the window mirror pressing plate
It is provided with strong magnetic column and window mirror sealing ring；
The tracheae is attached to gas shield device by the quick union；
Mixed air cavity is formed by the window mirror fixed seat with mixed air cavity dividing plate, and the floor space S1 of the mixed air cavity is at least being located at
3 times of the air flue area S2 at the mixed air cavity；
The braid is metal braid and/or non-metal knitted thing, and it is configured to enter the gas entered by tracheae
Row atomization is so that gas can be dispersed in the mixed air cavity；
The window mirror side direction is provided with the mixed air cavity dividing plate to hang down with being blown to the airflow direction of the window mirror
Straight and section is the air flue of strip, and the length of the air flue is equal to the length of the window mirror；
The deflector, mixed air cavity dividing plate and window mirror fixed seat surround to form slit, will pass through air flue from the mixed air cavity
The gas of middle blowout uniformly can blow out to form jet.
2. it is used for the gas shield device of operation window as claimed in claim 1, it is characterised in that：The window mirror pressing plate is
Closed-in construction, closed-in construction has equally distributed first hole, and first hole is configured to fastener by the window
Mirror is fixed in window mirror fixed seat by window mirror pressing plate；The window mirror fixed seat is the frame with two-stage stepped ramp type structure
Rack and panel construction, first step is configured to support window mirror, and second level step is configured to support window mirror pressing plate.
3. it is used for the gas shield device of operation window as claimed in claim 1, it is characterised in that：The window mirror fixed seat
First surface, second surface and the 3rd surface and the mixed air cavity dividing plate upper surface between formed and be configured for use as mixed air cavity
Cavity, and the braid is arranged in the mixed air cavity.
4. it is used for the gas shield device of operation window as claimed in claim 1, it is characterised in that：The height of the slit is
0.3-1.5mm, to prevent the narrow formation of slit width is turbulent or slit width is wide from causing gas flow purging less than the window
Mirror.
5. it is used for the gas shield device of operation window as claimed in claim 1, it is characterised in that：The braid is metal
Braid, the mesh number of the metal braid is between 50-200.
6. it is used for the gas shield device of operation window as claimed in claim 5, it is characterised in that：The number of plies of the braid
For 2 layers to 5 layers.
7. it is used for the gas shield device of operation window as claimed in claim 1, it is characterised in that：The braid is non-gold
The thickness for belonging to braid and the non-metal knitted thing is at least 1mm.
8. the gas shield device for operation window as described in any in claim 1 to 7, it is characterised in that：It is described to lead
Flow direction of the plate away from the window mirror and window mirror fixed seat junction have height for H boss so as to the deflector,
Mixed air cavity dividing plate and window mirror fixed seat constitute the lower surface of slit, the lower surface of the window mirror fixed seat and mixed air cavity dividing plate
In same level, the mixed air cavity dividing plate is fixed on prolonging to window mirror fixed seat body for window mirror fixed seat lower surface
In the groove stretched, the boss is no more than the remote window mirror side of the air flue on mixed air cavity dividing plate towards the edge of window mirror side
To the edge of side.
9. the gas shield device for operation window as described in any in claim 1 to 7, it is characterised in that：It is described to lead
The upper surface for flowing plate is horizontal plane, and the upper surface of the deflector is fixed in the direction away from the window mirror with the window mirror
The lower surface of seat is connected, and the mixed air cavity dividing plate is fixed on the window mirror fixed seat following table towards the window mirror fixed seat
There is height in the groove of body extension, and between the lower surface of the mixed air cavity dividing plate and the lower surface of the window fixed seat
Poor H1, so that the deflector, mixed air cavity dividing plate and window mirror fixed seat constitute slit.
10. it is used for the gas shield device of operation window as claimed in claim 9, it is characterised in that：The window mirror is fixed
It is H that the side that seat is located near the window mirror, which is provided with the height extended along the window mirror fixed seat body direction,2's
Opening, so that the air-flow blown out from the slit can blow to the window mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602636.7A CN107214337B (en) | 2017-07-21 | 2017-07-21 | Gas shield device for operation window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602636.7A CN107214337B (en) | 2017-07-21 | 2017-07-21 | Gas shield device for operation window |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107214337A true CN107214337A (en) | 2017-09-29 |
| CN107214337B CN107214337B (en) | 2019-04-12 |
Family
ID=59953634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710602636.7A Active CN107214337B (en) | 2017-07-21 | 2017-07-21 | Gas shield device for operation window |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI661927B (en) * | 2017-10-12 | 2019-06-11 | 國家中山科學研究院 | Laminated cavity |
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| CN205834238U (en) * | 2016-07-06 | 2016-12-28 | 北京多能正光科技有限公司 | A kind of selective laser fusing window mirror protection device |
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| CN102528034A (en) * | 2012-02-24 | 2012-07-04 | 湖南华曙高科技有限责任公司 | Method for protecting gas curtain of selective laser sintering window mirror |
| CN202411419U (en) * | 2012-02-24 | 2012-09-05 | 湖南华曙高科技有限责任公司 | Selective laser sintering (SLS) window mirror protection device |
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| CN205834238U (en) * | 2016-07-06 | 2016-12-28 | 北京多能正光科技有限公司 | A kind of selective laser fusing window mirror protection device |
| CN106041077A (en) * | 2016-07-11 | 2016-10-26 | 中北大学 | Laser rapid prototyping protective gas inlet device |
| CN206966650U (en) * | 2017-07-21 | 2018-02-06 | 北京易加三维科技有限公司 | Gas shield device for operation window |
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| TWI661927B (en) * | 2017-10-12 | 2019-06-11 | 國家中山科學研究院 | Laminated cavity |
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| CN107214337B (en) | 2019-04-12 |
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Effective date of registration: 20240326 Address after: 311258 No. 118, Yanshankong Road, Wenyan Street, Xiaoshan District, Hangzhou, Zhejiang Patentee after: Hangzhou Yijia 3D Additive Technology Co.,Ltd. Country or region after: China Patentee after: BEIJING E-PLUS-3D TECHNOLOGY Co.,Ltd. Address before: 102206 705, 105, building 7, No. 97, Changping Road, Shahe Town, Changping District, Beijing Patentee before: BEIJING E-PLUS-3D TECHNOLOGY Co.,Ltd. Country or region before: China |