CN207596963U - Multi-layer gas barrier laser melting-painting nozzle and the laser spraying device with the nozzle - Google Patents
Multi-layer gas barrier laser melting-painting nozzle and the laser spraying device with the nozzle Download PDFInfo
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- CN207596963U CN207596963U CN201721746906.3U CN201721746906U CN207596963U CN 207596963 U CN207596963 U CN 207596963U CN 201721746906 U CN201721746906 U CN 201721746906U CN 207596963 U CN207596963 U CN 207596963U
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Abstract
The utility model is related to field of laser cladding, and in particular to a kind of multi-layer gas barrier laser melting-painting nozzle and the laser spraying device with the nozzle.Including the link being arranged on laser cladding apparatus main frame, the ejection head unit being arranged on link and the protection mouth being arranged on ejection head unit；Ejection head unit includes at least two layers of hollow nozzle of class taper, and each nozzle is equipped at least one ventilation slot communicated with protection gas channel；Annular taper protection gas channel is coaxial with laser cavity.Effectively solve the problem of that single protection gas curtain metal powder when nozzle is distant away from matrix surface is oxidizable and easy spilling.
Description
Technical field
The utility model is related to field of laser cladding, and in particular to a kind of detachable multi-layer gas barrier laser melting coating spray
Mouth.
Background technology
Laser melting coating is to melting or semi-molten state, then with certain speed using laser by powdered METAL HEATING PROCESS
Pretreated matrix surface is ejected into, forms a kind of surface cladding technology of metallurgical binding.In practical application, by gas pressure
And powder speed influences, and is susceptible to two aspect problems, one side metal powder is easily splashed to except laser beam or heat source region,
Metal powder is caused to waste, influences surrounding enviroment.On the other hand, certain metal powders at high operating temperatures, easily by air
Oxygen or nitrogen oxidation, to solve the problems, such as this, in metal powder laser melting and coating process usually using protection gas in processing district
Domain forms protection gas curtain, and protection gas curtain effect has：1st, the relative closure gas compartment is formed in laser energy heating or exchange area, kept away
Exempt from the interference of the oxygen or nitrogen in air.2nd, adjustment metal powder motion path is corrected, metal powder is avoided to overflow laser beam energy
Measure area.But when nozzle is distant away from matrix surface, single protection gas curtain cannot still reach ideal effect.
Utility model content
The purpose of this utility model also provides a kind of detachable multi-layer gas barrier laser melting-painting nozzle, is arranged by step type
Cloth multi-layer gas channel carries out high-temperature metal powder multilayer protection, effectively solves single protection gas curtain in nozzle away from matrix table
When face is distant, metal powder is oxidizable and the problem of easy spilling.
The technical solution of the utility model is to provide a kind of multi-layer gas barrier laser melting-painting nozzle, including being arranged on
Link, the ejection head unit being arranged on link and the protection being arranged on ejection head unit on laser spraying apparatus main body frame
Mouth；The center position of aforementioned body frame is provided with laser cavity；At least two powder-feeding mouths are evenly arranged with along the circumferential direction of laser cavity；
It is characterized in that：
Annular taper powder feeding channel is formed between above-mentioned link and main frame, above-mentioned powder feeding channel is communicated with powder-feeding mouth；
Above-mentioned ejection head unit includes at least two layers of hollow nozzle of class taper, and including big end and small end, above-mentioned small end is hollow
The frustum of a cone；
Wherein first layer nozzle is equipped with suction nozzle, and first layer nozzle big end is detachably connected with link outer wall, small end
Annular taper protection gas channel is formed between inner wall and the outer wall of link, above-mentioned suction nozzle is communicated with protection gas channel；Remaining
Outer wall of the big end of nozzle respectively successively with preceding layer nozzle is detachably connected, the small end outer wall of small end inner wall and preceding layer nozzle
Between form annular taper protection gas channel, each nozzle is equipped at least one ventilation slot communicated with protection gas channel；
The outer wall of above-mentioned protection mouth and last layer of nozzle is detachably connected, protection mouth inner wall and last layer of nozzle small end
Annular taper protection gas channel is formed between outer wall；
Above-mentioned annular taper protection gas channel is coaxial with laser cavity.
Preferably, it is bonded to realize, nozzle big end is stepped hollow ring cylinder；
The ladder position of first layer nozzle big end is connect with link outer wall；
The ladder position of remainder layer nozzle big end is connect with the small end outer wall of last layer nozzle.
Preferably, above-mentioned link is class taper hollow structure, and including big end and small end, big end is stepped circular column
Body, small end are hollow cone platform, and big end is detachably connected with main frame, and annular cone is formed between small end inner wall and main frame outer wall
Shape powder feeding channel.
Preferably, above-mentioned ventilation slot is four, circumferentially uniformly distributed along nozzle small end so that protection air-flow is more uniform.
Preferably, the distance between link, ejection head unit, the frustum bottom surface for protecting mouth and matrix are sequentially reduced, and are realized
Protection to different sections of laser and metal powder；From first layer to last layer in ejection head unit, each layer nozzle frustum bottom surface away from
It is sequentially reduced from the distance between matrix.
Preferably, in order to be applied to different laser cladding apparatus, different distance cladding, link and main body are realized
Pass through spiral shell between frame, first layer nozzle and link, later layer nozzle and preceding layer nozzle, protection mouth and last layer of nozzle
Line connects, and can install different layers of nozzles according to the distance of nozzle and matrix, installation process is simple and convenient.
The utility model also provides a kind of laser spraying device, is characterized in that：Including any of the above-described multilayer gas
Body barrier laser melting-painting nozzle.
The beneficial effects of the utility model are：
1st, the utility model includes multilayer nozzle, and multichannel air-flow acts on, can form the multi-layer sealed type gas compartment, keep away simultaneously
Exempt from air environment to have an impact spraying effect；
2nd, when nozzle is distant away from base material, multichannel air-flow can play preferable guiding for metal powder path and make
With, metal powder is avoided to splash in spraying process, raising powder using efficiency, while dust is also avoided to surrounding enviroment dirt
Dye.
Description of the drawings
Fig. 1 is the structure diagram of the utility model one embodiment；
Fig. 2 a are the cross-sectional view of nozzle in Fig. 1；
Fig. 2 b are the vertical view of nozzle in Fig. 1；
Fig. 3 is utility model works schematic diagram.
Reference numeral is in figure：1- main frames, 11- laser cavities, 12- powder-feeding mouths, 2- links, 21- powder feeding channels, 22-
Ventilation slot, 23,34,45- protection gas channel, 24- suction nozzles, 3- first layer nozzles, 4- second layer nozzles, 5- protection mouth；
31- laser, 32- metal powders, 33- protection gas, 35- matrixes, 36- molten baths.
Specific embodiment
The utility model is further described below in conjunction with drawings and the specific embodiments.
It will be seen from figure 1 that the detachable multi-layer gas barrier laser melting-painting nozzle of the present embodiment, including at least two layers spray
Head, nozzle are connected by the main frame of connector and laser cladding apparatus, are illustrated by taking two layers of nozzle as an example in the present embodiment.
1 center position of main frame is provided with laser cavity 11, and 1 upper edge laser cavity 11 of main frame is circumferentially with two powder feedings
Mouth 12；Link 2 is class taper hollow structure, and including big end and small end, big end is stepped circular cylinder, outside main frame 1
Wall is equipped with passes through screw thread with the matched hierarchic structure of the hierarchic structure, the ladder position of link 2 with the ladder position of main frame 1
It is fixedly connected；Its small end is hollow cone platform, powder feeding channel 21 is formed between the inner wall of small end and the outer wall of main frame 1, this send
Powder channel 21 is communicated with powder-feeding mouth 12；
As can be seen that nozzle includes big end and small end from Fig. 2 a and Fig. 2 b, big end is circular cylinder, and inner wall has rank
Terraced structure, small end be hollow cone platform, outer wall have with the next layer of matched hierarchic structure of nozzle big end hierarchic structure, small
Ventilation slot 22 is provided on the side wall at end, ventilation slot 22 is four in this embodiment, is uniformly arranged along small end is circumferential, wherein the
One layer of nozzle 3 is provided with suction nozzle 24 on big end side wall.
The outer wall of link 2 has hierarchic structure, the hierarchic structure of 3 big end of first layer nozzle and the ladder knot of link 2
Structure matches and passes through screw thread and is connected, and the small end inner wall of first layer nozzle 3 forms annular taper with the small end outer wall of link 2 and protects
Gas channel 23, the protection gas channel 23 are connected with suction nozzle 24, hierarchic structure and the first layer nozzle 3 of 4 big end of second layer nozzle
The hierarchic structure of small end is connected by screw thread, and the inner wall of 4 small end of second layer nozzle forms ring with the outer wall of 3 small end of first layer nozzle
Shape taper protection gas channel 34.
Protection mouth 5 is further included, the structure for protecting mouth 5 is similar with nozzle structure, uniquely the difference is that not including ventilation slot 22,
The hierarchic structure of protection 5 big end of mouth matches, and pass through screw thread and be connected with the hierarchic structure of 4 small end of second layer nozzle, and protection mouth 5 is small
The outer wall of end inner wall and 4 small end of second layer nozzle forms annular taper protection gas channel 45.
Protect gas channel 23, protection gas channel 34, distance of the gas outlet end away from matrix 35 of protection gas channel 45 gradual
Reduce, to protect different sections of laser and metal powder.
The present embodiment laser melting-painting nozzle operation principle is further illustrated with reference to Fig. 3, using two sprays in the present embodiment
Head is first layer nozzle 3 and second layer nozzle 4, and first layer nozzle 3 and link 2 connect, and first layer nozzle 3 is equipped with suction nozzle
24, enable channel between first layer nozzle 3 and link 2 as first gas passage, first layer nozzle 3 and second layer nozzle 4 it
Between channel for second gas channel, the channel between second layer nozzle 4 and protection mouth 5 is third gas channel, first gas
The ventilation slot for 22 and second nozzle of ventilation slot that channel, second gas channel and third gas channel pass through first layer nozzle 3
22 communicate.In real work, laser 31 is exported from laser cavity 11, and metal powder 32 is ejected in protection gas 33 by powder feeding channel 21
35 surface of matrix is sprayed under effect, metal powder 32 forms molten bath 36 under the irradiation of laser 31 with 35 surface of matrix, and moment is cold
But metal cladding area is formed.
Claims (8)
1. a kind of multi-layer gas barrier laser melting-painting nozzle, including the link being arranged on laser cladding apparatus main frame (1)
(2), the ejection head unit being arranged on link (2) and the protection mouth (5) being arranged on ejection head unit；The main frame (1)
Center position is provided with laser cavity (11)；At least two powder-feeding mouths (12) are evenly arranged with along the circumferential direction of laser cavity (11)；
It is characterized in that：
Annular taper powder feeding channel (21) is formed between the link (2) and main frame (1), the powder feeding channel (21) is with sending
Powder mouth (12) communicates；
The ejection head unit includes at least two layers of hollow nozzle of class taper, and including big end and small end, the small end is hollow cone
Platform；
Wherein first layer nozzle (3) is equipped with suction nozzle (24), and first layer nozzle (3) big end and link (2) outer wall are detachable
Connection forms the protection gas channel (23) of annular taper, the suction nozzle (24) between small end inner wall and the outer wall of link (2)
It is communicated with protection gas channel (23)；Outer wall of the big end of remaining nozzle respectively successively with preceding layer nozzle is detachably connected, small end
Annular taper protection gas channel is formed between inner wall and the small end outer wall of preceding layer nozzle, each nozzle is equipped with protecting gas channel
At least one ventilation slot (22) communicated；
The protection mouth (5) and the outer wall of last layer of nozzle are detachably connected, and protect mouth (5) inner wall and last layer of nozzle small
The annular taper of formation protects gas channel (45) between holding outer wall；
Annular taper protection gas channel is coaxial with laser cavity (11).
2. multi-layer gas barrier laser melting-painting nozzle according to claim 1, it is characterised in that：Nozzle big end is stepped
Hollow ring cylinder；
The ladder position of first layer nozzle (3) big end is connect with link (2) outer wall；
The ladder position of remainder layer nozzle big end is connect with the small end outer wall of last layer nozzle.
3. multi-layer gas barrier laser melting-painting nozzle according to claim 2, it is characterised in that：The link (2) is
Class taper hollow structure, including big end and small end, big end is stepped circular cylinder, and small end is hollow cone platform, big end and master
Body frame (1) is detachably connected, and annular taper powder feeding channel (21) is formed between small end inner wall and main frame (1) outer wall.
4. multi-layer gas barrier laser melting-painting nozzle according to claim 3, it is characterised in that：The ventilation slot (22) is
It is four, circumferentially uniformly distributed along nozzle small end.
5. multi-layer gas barrier laser melting-painting nozzle according to claim 4, it is characterised in that：Link (2), nozzle list
The distance between member, the frustum bottom surface of protection mouth (5) and matrix (35) are sequentially reduced.
6. multi-layer gas barrier laser melting-painting nozzle according to claim 5, it is characterised in that：From first in ejection head unit
To last layer, each layer nozzle frustum bottom surface is sequentially reduced layer apart from the distance between matrix (35).
7. according to any multi-layer gas barrier laser melting-painting nozzles of claim 1-6, it is characterised in that：Link (2)
With main frame (1), first layer nozzle (3) and link (2), later layer nozzle and preceding layer nozzle, protect mouth (5) and last
It is connected through a screw thread between layer nozzle.
8. a kind of laser spraying device, it is characterised in that：It is melted including any multi-layer gas barrier laser of claim 1-7
Painting nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746906.3U CN207596963U (en) | 2017-12-14 | 2017-12-14 | Multi-layer gas barrier laser melting-painting nozzle and the laser spraying device with the nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746906.3U CN207596963U (en) | 2017-12-14 | 2017-12-14 | Multi-layer gas barrier laser melting-painting nozzle and the laser spraying device with the nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207596963U true CN207596963U (en) | 2018-07-10 |
Family
ID=62765257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721746906.3U Active CN207596963U (en) | 2017-12-14 | 2017-12-14 | Multi-layer gas barrier laser melting-painting nozzle and the laser spraying device with the nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207596963U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923706A (en) * | 2019-12-31 | 2020-03-27 | 华南理工大学 | Laser cladding device based on 3D prints and nozzle thereof |
| CN111088489A (en) * | 2020-01-09 | 2020-05-01 | 华侨大学 | Protection device for laser cladding |
| CN111844750A (en) * | 2020-07-21 | 2020-10-30 | 鑫精合激光科技发展（北京）有限公司 | 3D printing head, 3D printer and 3D printing method |
| CN113308691A (en) * | 2021-05-24 | 2021-08-27 | 安徽淮海奥可装备再制造有限公司 | Laser cladding head for plane remanufacturing and manufacturing method thereof |
-
2017
- 2017-12-14 CN CN201721746906.3U patent/CN207596963U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923706A (en) * | 2019-12-31 | 2020-03-27 | 华南理工大学 | Laser cladding device based on 3D prints and nozzle thereof |
| CN111088489A (en) * | 2020-01-09 | 2020-05-01 | 华侨大学 | Protection device for laser cladding |
| CN111088489B (en) * | 2020-01-09 | 2024-06-07 | 华侨大学 | Protection device for laser cladding |
| CN111844750A (en) * | 2020-07-21 | 2020-10-30 | 鑫精合激光科技发展（北京）有限公司 | 3D printing head, 3D printer and 3D printing method |
| CN111844750B (en) * | 2020-07-21 | 2022-07-08 | 鑫精合激光科技发展（北京）有限公司 | 3D printing head, 3D printer and 3D printing method |
| CN113308691A (en) * | 2021-05-24 | 2021-08-27 | 安徽淮海奥可装备再制造有限公司 | Laser cladding head for plane remanufacturing and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201022 Address after: 272000 Chengxiang Avenue and Jiamei Road Intersection of Jining Economic Development Zone, Shandong Province, Lunan New Energy Automobile Industrial Park Patentee after: Shandong Zhongke Meimei Laser Technology Co.,Ltd. Address before: 1 building, No. 710119, information Avenue, hi tech Zone, Shaanxi, Xi'an, 17 Patentee before: XI'AN ZHONGKE ZHONGMEI LASER TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |