CN106119836A - The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band - Google Patents
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band Download PDFInfo
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- CN106119836A CN106119836A CN201610641511.0A CN201610641511A CN106119836A CN 106119836 A CN106119836 A CN 106119836A CN 201610641511 A CN201610641511 A CN 201610641511A CN 106119836 A CN106119836 A CN 106119836A
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- powder
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- partition
- base plate
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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Abstract
Protect the unload-type broadband powder-feeding nozzle of flow channel on the downside of a kind of band, fold top board, partition and the base plate setting and interfixing including level the most successively；Top board entrance is inclined upwardly extension, top board entrance is provided with powder through hole, base plate entrance is provided with unloading through hole, the top opening of powder through hole exposes to top board and constitutes powdering inlet, the base opening of powder through hole is connected by the through hole on drainage screen with unloading through hole, and drainage screen is laid on unloading through hole, is provided with the powder flow channel of level between top board and partition, one end of powder flow channel connects with powder through hole, and the other end extends to the port of export composition dust outlet of top board and partition；Being provided with the protection flow channel of level between base plate and partition, one end of protection flow channel connects with the protection vent hole on base plate, and the other end extends to the port of export composition protection flow channel outlet of base plate and partition.
Description
Technical field
The present invention relates to a kind of nozzle, particularly relate to protect on the downside of a kind of band the unload-type broadband powder-feeding nozzle of flow channel.
Background technology
Laser remanufacturing technology is as a kind of green, the re-manufacturing technology in forward position, in heavy construction equipment reparation, important portion
Part remanufactures aspect, creates significant economic benefit and good social benefit.
The mode of laser remanufacturing technology many employings synchronous powder feeding system laser melting coating, according to powder-feeding nozzle with light beam relative to position
Difference, synchronous powder feeding system is divided into again coaxial powder-feeding and lateral powder feeding, and wherein, lateral powder feeding is applicable to broadband laser cladding, for
Some large-scale workpieces, such as occasions such as macrotype axes series parts surface, large-area planar laser melting coatings, utilize broadband laser cladding, energy
Enough it is greatly improved cladding efficiency, and overlap joint number of times and heat affected area can be reduced, thus obtain the cladding layer of better quality.
During laser remanufacturing, automatic powder feeding system is according to the difference of powder feeding power source, can be divided into gravity type powder feeding and carrier gas
Formula powder feedings etc. are dissimilar.Wherein, gravity type powder feeding is dependent on the deadweight of powder and carries, and is particularly well-suited to vertical powder feeding,
This automatic powder feeding system powder using efficiency is higher, and up to 90%, the cladding layer obtained smooths, and cladding quality is good, but in the face of complicated
, during long distance delivery powder, there is powder and transport the problem being short of power in operating mode, affects the seriality of powder output with uniform
Property, meanwhile, when the lateral powder feeding of certain angle, the most under gravity, powder is parabolical output from nozzle to powder, powder
The accuracy entering molten bath is low, has had a strong impact on powder using efficiency, and these all constrain the application of gravity type powder feeding.
Carrier gas type powder feeding is based on Dual-Phrase Distribution of Gas olid principle, relies on the power conveying powder of gas, and this mode can be real
Now gas powder uniformly mixes, and the seriality of powder output, uniformity are good, and are not limited relative to position with nozzle by powder feeder
System, can realize complex working condition, the output of distance, at any angle powder, so carrier gas type automatic powder feeding system is widely adopted, but
Carrier gas type powder feeding there is problems of powder can be affected by carrier gas, on the one hand, easily cause output powder bundle under the effect of carrier gas
Dissipate, the convergence degree of powder is low so that powder using efficiency the lowest (generally below 50%)；On the other hand accelerated to make by carrier gas
With, powder output speed is very big, easily causes powder and acutely rebounds, is unfavorable for that light powder couples, cladding layer is formed adverse effect.
So, reduce powder and dissipate, increase the light powder degree of coupling, improving powder using efficiency is that carrier gas type powder feeding dependency structure sets
The important references of meter.
Patent CN103990800A discloses a kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer, institute
State spray nozzle device with an infundibulate circular cone cavity body structure, and on end cap, offer pressure relief vent, be used for discharging part carrier gas,
Metal dust can be separated by this mode to a certain extent with transporting carrier gas, reduces carrier gas and powder is exported the unfavorable of quality
Impact, but, use this structure, on the one hand owing to separation of air from dust cavity space is compared with the big many of powder delivery channel, portion can be caused
Point powder retention in taper disengagement chamber, thus affect powder quantitative, uniformly export, laser melting coating is had adverse effect；
On the other hand, this labyrinth considerably increases nozzle volume, is unfavorable for using flexibly in laser cladding process.
Summary of the invention
For solving the problems referred to above, the present invention provides the unload-type broadband powder-feeding nozzle protecting flow channel on the downside of a kind of band.
The technical scheme is that
Protect the unload-type broadband powder-feeding nozzle of flow channel on the downside of a kind of band, set and phase including level the most successively is folded
The most fixing top board, partition and base plate；Top board entrance is inclined upwardly extension, and top board entrance is provided with powder through hole, base plate
Entrance is provided with unloading through hole, the top opening of powder through hole expose to top board constitute powdering inlet, the base opening of powder through hole with unload
Carrying through hole to be connected by the through hole on drainage screen, drainage screen is laid on unloading through hole,
Being provided with the powder flow channel of level between top board and partition, one end of powder flow channel connects with powder through hole, the other end
Extend to the port of export composition dust outlet of top board and partition；
Being provided with the protection flow channel of level between base plate and partition, one end of protection flow channel leads to the protection gas on base plate
Hole connects, and the other end extends to the port of export composition protection flow channel outlet of base plate and partition.
Further, the outlet of protection flow channel is positioned at the underface of dust outlet.
Further, the width of protection flow channel is more than the width of powder flow channel.
Further, the bottom surface of top board offers the first groove, the end face of base plate offers the second groove, the top of partition
Face and the first groove enclose powder flow channel, and the bottom surface of partition and the second groove enclose protection flow channel, and the second groove
Groove width is more than the groove width of the first groove.
Further, described partition offers through hole, and through hole is directed at up and down with powder through hole and unloading port and passes through
Logical.
Further, top board entrance is inclined upwardly 45 °
Further, protection vent hole is vertically arranged along described base plate, and protection vent hole and the second groove are connected.
Further, the end face periphery of unloading port is provided with annular positioning groove.
Further, drainage screen is arranged in locating slot by seal washer, and seal washer and drainage screen are sequentially placed into location
In groove, the end face of drainage screen and the either flush of base plate after being fixed and clamped.
Further, described seal washer is elastic plain washer, and described drainage screen is wire netting.
The invention has the beneficial effects as follows:
The present invention has carrier gas type powder feeding and the advantage of gravity type powder feeding concurrently, overcomes both deficiencies simultaneously, and powder gas enters
Before nozzle, carrier gas can play advantage in powder transport process, will be transported by unloading port and unload with carrier gas after entering nozzle
Achieve carrier gas after falling to separate with powder, it is to avoid the adverse effect that follow-up powder is exported by carrier gas.After uninstalling carrier gas,
Powder relies on inertia and action of gravity to export along powder flow channel lower wall；Meanwhile, synchronize to add inertia in the downside of powder flow channel to protect
Protecting gas, powder is protected the rectified action of gas, can keep preferable deflection and directivity, it is to avoid powder bundle is only in action of gravity
Under the parabolical form that causes, the accuracy entering molten bath is thus protected, and powder using efficiency is effectively improved；
Accompanying drawing explanation
Fig. 1 is the structural blast figure of the present invention.
Fig. 2 is the sectional view of the present invention.
Fig. 3 is the upward view of top board.
Fig. 4 is the side view of top board.
Fig. 5 is the top view of partition.
Fig. 6 is the top view of base plate.
Fig. 7 be in Fig. 6 A-A to sectional view.
Fig. 8 is fundamental diagram of the present invention.
Detailed description of the invention
As it can be seen, protect the unload-type broadband powder-feeding nozzle of flow channel on the downside of a kind of band, including water the most successively
Flat folded top board 1, partition 2 and the base plate 3 setting and interfixing；Top board entrance 11 is inclined upwardly extension, on top board entrance 11
Being provided with powder through hole 111, the entrance of base plate 3 is provided with unloading through hole 33, and the top opening of powder through hole 111 exposes to top board and constitutes
Powdering inlet, the base opening of powder through hole 111 is connected by the through hole on drainage screen 4 with unloading through hole 33, and drainage screen 4 is laid on and unloads
Carry on the locating slot 331 of through hole 33 end face,
Being provided with the powder flow channel M of level between top board 1 and partition 2, one end of powder flow channel M connects with powder through hole 111,
The other end extends to the port of export composition dust outlet m of top board and partition；
The protection flow channel N of level, one end of protection flow channel N and the guarantor on base plate 3 it is provided with between base plate 3 and partition 2
Protecting vent hole 32 to connect, the other end extends to the port of export composition protection gas outlet n of base plate and partition.
Protection gas outlet n is positioned at immediately below dust outlet m so that protection gas preferably lifts powder bundle.
Protect the width width more than powder flow channel M of flow channel N, it is ensured that whole powder bundle can be protected gas uniformity
Lift effect.
Offer the first groove 12 on the bottom surface of top board 1, the end face of base plate 3 offers the second groove 31, the top of partition 2
Face and the first groove 12 enclose powder flow channel M, and the bottom surface of partition 2 and the second groove 31 enclose protection gas N runner, and second
The groove width of groove 31 is more than the groove width of the first groove 12.
Offer through hole 21 on described partition 2, and through hole 21 is directed at also with powder through hole 111 and unloading port about 33
Through.
Top board entrance 111 is inclined upwardly 45 °.
Protection vent hole 32 is vertically arranged along described base plate 3, and protection vent hole 32 is connected with the second groove 31.
The end face periphery of unloading port 33 is provided with annular positioning groove 331, and seal washer 5 and drainage screen 4 are sequentially placed into locating slot
In 331,
Described drainage screen 4 is fixed in locating slot by elastic packing packing ring 5, it is ensured that after compression the end face of drainage screen 4 with
The either flush of base plate 3, and prevent powder particle from spilling from the gap between drainage screen 4 and locating slot.
Described drainage screen 4 is wire netting, and for ensureing that powder is not passed through, described drainage screen 4 uses compact metal net, and unloading
Can fold on through hole 33 and set multiple filtration net 4 to increase filter screen intensity and filter effect.
Top board 1, partition 2 and base plate 3 are provided with through screw 6, and top board 1, partition 2 and base plate 3 are solid up and down by screw
Fixed, drainage screen 4 is clamped between partition 2 and base plate 3.
As shown in Figure 8, accessing airborne powder mix ab at the powdering inlet of powder through hole 111, powder is in carrier gas
Sweeping along the lower entrance present invention, carrier gas b freely can be released by unloading port 33, powder a then can by the obstruct of drainage screen 4, and
Entering powder flow channel M, powder a under the bounce of drainage screen 4 and the effect of gravity relies on remaining kinetic energy and action of gravity along powder
The lower wall of later and decadent stage of a school of thought road M exports from dust outlet.
The angle that during paraxonic lateral powder feeding, powder is delivered is generally about 45 degree, and the powder bundle of output is the easiest
Deforming sagging, form parabolical, now powder Shu Tingdu is poor, and powder is difficult to concentrate, and the accuracy that powder enters molten bath is low, causes powder
End utilization rate is low.The present invention is by protecting vent hole 32 to synchronize to protecting flow channel N to be passed through inertia protection gas c, at dust outlet,
Protection gas c located directly below has rectified action to powder bundle a so that powder bundle a keeps good deflection and directivity, makes powder
In the molten bath e that entrance laser beam d irradiation more accurate, that concentrate is formed, powder using efficiency can be effectively improved；Additionally, add
Inertia protection gas c can form atmosphere protection around the e of molten bath, reduce crucible zone oxidation, raising cladding quality.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept, the protection of the present invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies means.
Claims (9)
1. on the downside of a band, protect the unload-type broadband powder-feeding nozzle of flow channel, it is characterised in that: include water the most successively
Flat folded top board, partition and the base plate setting and interfixing；Top board entrance is inclined upwardly extension, and top board entrance is provided with powder
Through hole, base plate entrance is provided with unloading through hole, and the top opening of powder through hole exposes to top board and constitutes powdering inlet, powder through hole
Base opening is connected by the through hole on drainage screen with unloading through hole, and drainage screen is laid on unloading through hole,
Being provided with the powder flow channel of level between top board and partition, one end of powder flow channel connects with powder through hole, and the other end extends
The port of export to top board with partition constitutes dust outlet；
Being provided with the protection flow channel of level between base plate and partition, one end of protection flow channel is with the protection vent hole on base plate even
Logical, the other end extends to the port of export composition protection flow channel outlet of base plate and partition.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 1, it is characterised in that: protect
Protect flow channel outlet and be positioned at the underface of dust outlet.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 2, it is characterised in that: protect
Protect the width width more than powder flow channel of flow channel.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 3, it is characterised in that: top
Offering the first groove on the bottom surface of plate, the end face of base plate offers the second groove, end face and first groove of partition enclose
Become powder flow channel, the bottom surface of partition and the second groove to enclose protection flow channel, and the groove width of the second groove is more than the first groove
Groove width.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 4, it is characterised in that: institute
State and on partition, offer through hole, and through hole is directed at and through up and down with powder through hole and unloading port.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 5, it is characterised in that: protect
Protecting vent hole to be vertically arranged along described base plate, protection vent hole and the second groove are connected.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 6, it is characterised in that: unload
The periphery carrying hole is provided with annular positioning groove, and drainage screen is arranged in locating slot, and the either flush of the end face of drainage screen and base plate.
The unload-type broadband powder-feeding nozzle protecting flow channel on the downside of a kind of band the most as claimed in claim 7 is characterized in that: institute
State drainage screen to be fixed in locating slot by seal washer.
The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band the most as claimed in claim 8, it is characterised in that: institute
Stating drainage screen is wire netting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641511.0A CN106119836A (en) | 2016-08-08 | 2016-08-08 | The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641511.0A CN106119836A (en) | 2016-08-08 | 2016-08-08 | The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band |
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| Publication Number | Publication Date |
|---|---|
| CN106119836A true CN106119836A (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610641511.0A Pending CN106119836A (en) | 2016-08-08 | 2016-08-08 | The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band |
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| Country | Link |
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| CN (1) | CN106119836A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471634A (en) * | 2017-08-31 | 2017-12-15 | 宁夏共享模具有限公司 | A kind of gas conveying-type increasing material manufacturing power spreading device |
| CN109183028A (en) * | 2018-11-16 | 2019-01-11 | 江苏科技大学 | Lateral dust feeder and its melting and coating process for high-rate laser cladding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61194166A (en) * | 1985-02-20 | 1986-08-28 | Honda Motor Co Ltd | Treatment for remelting and hardening |
| CN202380090U (en) * | 2011-12-12 | 2012-08-15 | 苏州大学 | Laser cladding fiber composite nozzle |
| CN203295605U (en) * | 2013-04-22 | 2013-11-20 | 杭州东通激光科技有限公司 | Wideband nozzle for uniformly feeding powder for laser processing |
| CN204198853U (en) * | 2014-11-11 | 2015-03-11 | 晋中开发区圣邦液压器件有限公司 | Combined laser cladding powder-feeding head |
| CN205974664U (en) * | 2016-08-08 | 2017-02-22 | 浙江工业大学 | Take uninstallation formula broadband powder feeding nozzle of downside protection flow channel |
-
2016
- 2016-08-08 CN CN201610641511.0A patent/CN106119836A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61194166A (en) * | 1985-02-20 | 1986-08-28 | Honda Motor Co Ltd | Treatment for remelting and hardening |
| CN202380090U (en) * | 2011-12-12 | 2012-08-15 | 苏州大学 | Laser cladding fiber composite nozzle |
| CN203295605U (en) * | 2013-04-22 | 2013-11-20 | 杭州东通激光科技有限公司 | Wideband nozzle for uniformly feeding powder for laser processing |
| CN204198853U (en) * | 2014-11-11 | 2015-03-11 | 晋中开发区圣邦液压器件有限公司 | Combined laser cladding powder-feeding head |
| CN205974664U (en) * | 2016-08-08 | 2017-02-22 | 浙江工业大学 | Take uninstallation formula broadband powder feeding nozzle of downside protection flow channel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471634A (en) * | 2017-08-31 | 2017-12-15 | 宁夏共享模具有限公司 | A kind of gas conveying-type increasing material manufacturing power spreading device |
| CN107471634B (en) * | 2017-08-31 | 2023-10-20 | 共享智能装备有限公司 | Powder paving device for gas conveying type additive manufacturing |
| CN109183028A (en) * | 2018-11-16 | 2019-01-11 | 江苏科技大学 | Lateral dust feeder and its melting and coating process for high-rate laser cladding |
| CN109183028B (en) * | 2018-11-16 | 2020-10-13 | 江苏科技大学 | Lateral powder feeding device for high-speed laser cladding and cladding process thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20161116 |