CN201511130U - Coaxial powder feeding nozzles for fast laser shaping - Google Patents
Coaxial powder feeding nozzles for fast laser shaping Download PDFInfo
- Publication number
- CN201511130U CN201511130U CN2009202039392U CN200920203939U CN201511130U CN 201511130 U CN201511130 U CN 201511130U CN 2009202039392 U CN2009202039392 U CN 2009202039392U CN 200920203939 U CN200920203939 U CN 200920203939U CN 201511130 U CN201511130 U CN 201511130U
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- cooling water
- tapered nozzle
- sleeve
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Abstract
Coaxial powder feeding nozzles for fast laser shaping comprise a cooling water hood, a tapered nozzle sleeve, an inner tapered nozzle, a powder feed sleeve and a water inlet pipe, wherein, the tapered nozzle sleeve is arranged in the cooling water hood; the water inlet pipe is inserted into the cooling water hood; the cavity between the cooling water hood and the tapered nozzle sleeve is an outer layer cooling water passage; the cooling water hood and the tapered nozzle sleeve are in threaded connection with each other; seal rings are arranged on the upper and the lower bonding surfaces of the cooling water hood and the tapered nozzle sleeve respectively; the inner tapered nozzle and the powder feed sleeve are arranged in the tapered nozzle sleeve; the inner tapered nozzle and the powder feed sleeve are in threaded connection with each other, and the inner tapered nozzle is arranged inside and the powder feed sleeve is arranged outside; the cavity between the inner tapered nozzle and the powder feed sleeve is an inner layer cooling water passage; seal rings are arranged on the two bonding surfaces of the inner tapered nozzle and the powder feed sleeve respectively; four or six trough-type structures are formed on the circular conical external surface of the inner tapered nozzle uniformly; the center lines of the sleeve-shaped structures are jointed together; and the intersection is superposed with laser focusing spot. The utility model has the advantages that the sealing and the cooling effects are good; powder cannot stick to the powder outlet; the powder gathering capability and the powder jet speed are improved; the main connection manner adopts threaded connection; the processing is easy; the assembly and the disassembly are convenient; and the defects of large heat input during welding and connecting and great variation of parts are overcome.
Description
Technical field: the utility model relates to a kind of powder-feeding mouth, especially a kind of coaxial powder-feeding mouth that is used for laser fast forming, be mainly used in the metal powder laser rapid forming system and the cladding laser surfaces system in.
Background technology: laser is the most rising field of twentieth century, has developed more than 20 kind of laser processing technology abroad, and wherein laser melting and coating technique is one of present most active laser processing technology.The laser fast forming technology is that laser melting and coating technique is combined with RP technique, is raw material with the metal dust, adopts high-power laser melting and coating technique, utilizes quick shaping layering to make thought, produces metal function parts list base.This technology because of can direct forming metal function part people's attention extremely, and obtained significant progress.The laser fast forming system is except high power laser, mainly also comprise leaded light and focusing arrangement, numerical control device and metal powder feed apparatus etc., wherein metal powder feed is a key technology, the cladding laser surfaces that it directly affects and the quality of laser fast forming and efficient.At present, the metal powder feed mode mainly contains following three kinds: fore-put powder method, side direction synchronous powder feeding system method and coaxial powder-feeding method.What use was more at present is the coaxial powder jet that adopts the coaxial powder-feeding method, and most of coaxial powder jet all adopts the structure of coaxial annular tapered sleeve.Though this coaxial powder jet compact conformation still has following problem:
1, converging property of powder is poor: existing annular tapered sleeve structure all has the powder ejection on whole ring week, is difficult for realizing that powder converges in the molten bath of laser melting coating or laser fast forming.
2, powder using efficiency is low: because the converging property of coaxial powder-feeding mouth powder of existing annular tapered sleeve structure is poor, directly cause powder using efficiency low, closely cause processing cost to increase.
3, processing difficulties: existing coaxial powder-feeding mouth adopts Welding Structure mostly, and the input of welding processing heat is big, and workpiece deformation is big, and yield rate is low, causes processing difficulties.
Summary of the invention: at above-mentioned the deficiencies in the prior art, the utility model provides a kind of coaxial powder-feeding mouth that is used for laser fast forming.
For achieving the above object, the technical solution adopted in the utility model is: a kind of coaxial powder-feeding mouth that is used for laser fast forming, comprise the cooling water cover, and the awl muzzle, the inner cone mouth advances powder cover and water inlet pipe.The awl muzzle is in the cooling water cover, and water inlet pipe is inserted in the cooling water cover.Cavity between cooling water cover and the awl muzzle is outer cooling-water duct.The cooling water cover is connected by helicitic texture between the muzzle with awl, about two faying face places be provided with sealing ring respectively.The inner cone mouth and advance the powder cover be in the awl muzzle in.The inner cone mouth with advance between the powder cover with being threaded, the inner cone mouth advances the powder cover outside interior, the inner cone mouth is the internal layer cooling-water duct with the cavity that advances between the powder cover, at the inner cone mouth and advance powder and overlap on two faying faces sealing ring is arranged respectively.Inner cone mouth outer surface is a taper seat, has 4 (each groove differs 90 degree) or 6 (each groove differs 60 degree) trench structures on this face uniformly, and the center line of trench structure intersects at a bit, and this intersection point overlaps with the laser focal beam spot.
The utility model seals, cools off, and meal outlet does not glue powder, has improved the converging property and the jet velocity of powder, and mainly connected mode promptly is easy to process for being threaded, and conveniently installs and removes, and has overcome again to be welded to connect hot the input greatly, part variation shortcoming greatly.
Description of drawings:
Fig. 1 is an internal view of the present utility model.
Fig. 2 is the structural representation of inner cone mouth.
Fig. 3 is the upward view of Fig. 2.
The specific embodiment:
As shown in Figure 1: a kind of coaxial powder-feeding mouth that is used for laser fast forming, comprise cooling water cover 1, awl muzzle 2, inner cone mouth 3 advances powder cover 4 and water inlet pipe 5.Awl muzzle 2 is in the cooling water cover 1, and water inlet pipe 5 is inserted in the cooling water cover 1.Cavity between cooling water cover 1 and the awl muzzle 2 is outer cooling-water duct 7, and this structure can be taken away the most of heat that reflexes in cladding laser surfaces and the laser fast shaping process on the powder-feeding mouth.Cooling water cover 1 is connected by helicitic texture between the muzzle 2 with awl, about two faying face places be provided with sealing ring respectively, guarantee that the sealing of this structure is reliable.Cooling water cover 1 is threaded with water inlet pipe and water outlet pipe 5 usefulness, coats fluid sealant in thread surface earlier when connecting, and is screwing screw thread then, guarantees that connection is reliable and sealing is reliable.Inner cone mouth 3 and advance powder cover 4 and be in the awl muzzle 2.Inner cone mouth 3 with advance between the powder cover 4 with being threaded, inner cone mouth 3 is interior, advance powder cover 4 outside, inner cone mouth 3 and the cavity that advances between the powder cover 4 are internal layer cooling-water duct 6, this structure remains in the lower scope temperature of powder feeding passage, so that the sticking powder of meal outlet, inner cone mouth 3 with advance powder and overlap on 4 two faying faces sealing ring is arranged respectively, guarantee that the sealing of this structure is reliable.
As shown in Figures 2 and 3: inner cone mouth 3 outer surfaces are taper seat, have 4 (each groove differs 90 degree) or 6 (each groove differs 60 degree) trench structures on this face uniformly.Powder sprays from 4 (6) slotted eyes, and following advantage is arranged: 1, more existing ring taper surface sprays, and has improved the converging property of powder.2, to compare the annular distance area little for the slotted eye area, and under nebulizer gas pressure and the constant situation of carrier gas flux, the powderject speed of raising has improved converging property.3, higher jet velocity also makes powder be difficult for adhering to meal outlet.Inner cone mouth 3 is a hollow structure, the laser channeling after be focusing on, and inside is connected with inert gas, promptly protects the eyeglass cleaning, and laser molten pool is in the inert gas shielding scope.4, higher exit flow speed and bigger outlet pressure can be opened the powder spray of end fusing, make laser melting coating and laser fast forming surface quality higher.
Claims (2)
1. coaxial powder-feeding mouth that is used for laser fast forming is characterized in that: comprise the cooling water cover, and the awl muzzle, the inner cone mouth advances powder cover and water inlet pipe; The awl muzzle is in the cooling water cover, and water inlet pipe is inserted in the cooling water cover; Cavity between cooling water cover and the awl muzzle is outer cooling-water duct, the cooling water cover is connected by helicitic texture between the muzzle with awl, be provided with sealing ring respectively at two faying face places up and down, the inner cone mouth and advance the powder cover be in the awl muzzle in, the inner cone mouth with advance between the powder cover with being threaded, the inner cone mouth advances powder and overlaps outside interior, inner cone mouth and the cavity that advances between the powder cover are the internal layer cooling-water duct, the inner cone mouth with advance on two faying faces of powder cover sealing ring is arranged respectively; Inner cone mouth outer surface is a taper seat, has trench structure on this face uniformly, and the center line of trench structure intersects at a bit, and this intersection point overlaps with the laser focal beam spot.
2. a kind of coaxial powder-feeding mouth that is used for laser fast forming as claimed in claim 1 is characterized in that: described trench structure is 4 or 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202039392U CN201511130U (en) | 2009-10-16 | 2009-10-16 | Coaxial powder feeding nozzles for fast laser shaping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202039392U CN201511130U (en) | 2009-10-16 | 2009-10-16 | Coaxial powder feeding nozzles for fast laser shaping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201511130U true CN201511130U (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202039392U Expired - Fee Related CN201511130U (en) | 2009-10-16 | 2009-10-16 | Coaxial powder feeding nozzles for fast laser shaping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201511130U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374758A (en) * | 2010-08-25 | 2012-03-14 | 湖南工学院 | Drying treatment device for laser cladding powder |
| CN105522264A (en) * | 2016-01-06 | 2016-04-27 | 江苏烁石焊接科技有限公司 | Device for 3D printing of high-nitrogen steel products through nitrogen arc and nitride |
| CN106029263A (en) * | 2014-03-18 | 2016-10-12 | 株式会社东芝 | Nozzle of lamination molding apparatus, and lamination molding apparatus |
| CN106378450A (en) * | 2016-10-17 | 2017-02-08 | 华南理工大学 | Additive manufacturing equipment and method suitable for selective laser melting of various materials |
| CN106825571A (en) * | 2017-03-31 | 2017-06-13 | 杨沛恩 | A kind of coaxial powder feeding apparatus for 3D printing metal works |
| CN110923706A (en) * | 2019-12-31 | 2020-03-27 | 华南理工大学 | Laser cladding device based on 3D prints and nozzle thereof |
| CN110952089A (en) * | 2019-12-20 | 2020-04-03 | 西安交通大学 | Slit type powder feeding head |
-
2009
- 2009-10-16 CN CN2009202039392U patent/CN201511130U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374758A (en) * | 2010-08-25 | 2012-03-14 | 湖南工学院 | Drying treatment device for laser cladding powder |
| CN106029263A (en) * | 2014-03-18 | 2016-10-12 | 株式会社东芝 | Nozzle of lamination molding apparatus, and lamination molding apparatus |
| US10279430B2 (en) | 2014-03-18 | 2019-05-07 | Kabushiki Kaisha Toshiba | Nozzle of layered object manufacturing apparatus, and layered object manufacturing apparatus |
| CN105522264A (en) * | 2016-01-06 | 2016-04-27 | 江苏烁石焊接科技有限公司 | Device for 3D printing of high-nitrogen steel products through nitrogen arc and nitride |
| CN106378450A (en) * | 2016-10-17 | 2017-02-08 | 华南理工大学 | Additive manufacturing equipment and method suitable for selective laser melting of various materials |
| CN106825571A (en) * | 2017-03-31 | 2017-06-13 | 杨沛恩 | A kind of coaxial powder feeding apparatus for 3D printing metal works |
| CN106825571B (en) * | 2017-03-31 | 2018-03-23 | 杨沛恩 | A kind of coaxial powder feeding apparatus for 3D printing metal works |
| CN110952089A (en) * | 2019-12-20 | 2020-04-03 | 西安交通大学 | Slit type powder feeding head |
| CN110952089B (en) * | 2019-12-20 | 2024-05-28 | 西安交通大学 | Slit type powder feeding head |
| CN110923706A (en) * | 2019-12-31 | 2020-03-27 | 华南理工大学 | Laser cladding device based on 3D prints and nozzle thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20121016 |