CN203295605U - Wideband nozzle for uniformly feeding powder for laser processing - Google Patents
Wideband nozzle for uniformly feeding powder for laser processing Download PDFInfo
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- CN203295605U CN203295605U CN2013202089792U CN201320208979U CN203295605U CN 203295605 U CN203295605 U CN 203295605U CN 2013202089792 U CN2013202089792 U CN 2013202089792U CN 201320208979 U CN201320208979 U CN 201320208979U CN 203295605 U CN203295605 U CN 203295605U
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Abstract
The utility model discloses a wideband nozzle for uniformly feeding powder for laser processing. The wideband nozzle comprises a rectangular nozzle and an annular powder cavity, wherein a rectangular powder feeding channel and a shielding gas channel are formed in the rectangular nozzle, a powder outlet is formed in one end of the rectangular powder feeding channel, the shielding gas channel is arranged at the periphery of the powder outlet and is parallel with the powder outlet, a powder feeding gas channel is formed in the other end of the rectangular powder feeding channel and comprises a transition channel and a round channel, and the transition channel is used for realizing smooth and uniform transition from the round channel to the rectangular powder feeding channel; the rectangular nozzle is fixedly mounted in the annular powder cavity, a powder outlet end and a round channel end of the rectangular nozzle stretch out of the annular powder cavity, powder is filled in the annular powder cavity, gas channels are formed in the annular powder cavity, and a powder inlet is formed in the side face of the rectangular powder feeding channel of the rectangular nozzle. According to the wideband nozzle for uniformly feeding the powder for the laser processing, the phenomenon that the powder is more in the middle and less at two sides during the powder feeding of the rectangular nozzle can be substantially eliminated, the whole rectangular powder outlet can be uniformly filled by the powder, and the uniform powder feeding is realized.
Description
Technical field
The utility model relates to a kind of laser working nozzle, particularly a kind of nozzle that needs evenly to carry the broadband powder for laser processing procedure.
Background technology
Laser processing is a kind of advanced person's re-manufacturing technology, light harvesting, mechanical, electrical technology and one., because but it has noncontact processing processing high-hardness, materials with high melting point, working (machining) efficiency is high, thermal distortion is little, the convenient advantages such as digital control processing, working accuracy is high, controllability good, pollution is few of carrying out, the various fields such as automobile, metallurgy, aerospace, machinery, weaving, chemical industry, microelectronics industry, artwork production, daily living article and process article manufacture have been widely used at present.
Laser processing can be divided into presetting system and synchronous mode laser melting coating by the mode of powder feeding.And the coating of preset laser processing exists the coatingsurface unfairness, easily cracks, pore and the shortcoming such as thinning ratio is low,
Therefore the synchronous powder feeding system method is the present comparatively advanced and a kind of wider method of application.The structures shape of laser powder-feeding nozzle the performance quality of coating, present powder-feeding nozzle be no matter coaxial powder-feeding with the side direction powder feeding be circular nozzle mostly, round nozzle is simple in structure easy to process, and the laser apparatus that utilizes circular light spot is inapplicable carries out large-area laser processing.And the laser apparatus of rectangular light spot can carry out big area processing, and the reparation that is applicable to heavy parts is manufacturing process again.But the rectangular nozzle structure very complex that has at present, and be difficult to guarantee powder homogeneity and with the coupling of beam cross section, adjustment process more complicated, tooling cost are also higher.
In Chinese patent CN2838760Y, proposed a kind of laser wide-band cladding powder-feeding nozzle, its structure has mainly comprised hopper, powder conveying pipe, powder delivery mouth, and protection gas passage and water jacket are arranged on the powder delivery mouth.This nozzle arrangements is simple, and is easy to loading and unloading, and tooling cost is low, but this nozzle is more difficult, realizes that powder feeding is even.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide the broadband nozzle of a kind of laser processing with even powder feeding, this nozzle can significantly be eliminated the rectangular nozzle powder feeding and the few phenomenon in middle many both sides occur, make powder can evenly be full of the meal outlet of whole rectangle, realize even powder feeding.
To achieve the above object, the utility model has adopted following technical scheme:
A kind of laser processing is with the broadband nozzle of even powder feeding, comprise rectangular nozzle and annular powder chambers, rectangular nozzle is provided with rectangle powder feeding passage and protection gas passage, one end of rectangle powder feeding passage is meal outlet, protection gas passage be arranged in parallel in meal outlet periphery and both, the other end of rectangle powder feeding passage is the powder feeding gas passage, and this powder feeding gas passage comprises a transition passage and a circular passage, and transition passage is realized the smooth even transition of circular passage to rectangle powder feeding passage; Rectangular nozzle is fixed in annular powder chambers, meal outlet end and the circular passage end of rectangular nozzle stretch out annular powder chambers, in the annular powder chambers, place powder and be provided with gas passage, rectangular nozzle is provided with powder inlet in the side of rectangle powder feeding passage, and the powder in annular powder chambers enters rectangle powder feeding passage by powder inlet; Wherein, described meal outlet, powder inlet and rectangle powder feeding passage have the shape of cross section that is complementary.
As preferably, described annular powder chambers has the gas passage of setting out on a journey He Xia road gas passage, and in chamber, is provided with a screen cloth ，Xia road gas passage and is communicated in annular powder chambers after via screen cloth.Further guarantee the powder feeding continuous uniform.
As preferably, described powder inlet extends to the rectangle powder feeding passage of level along camber line.Being beneficial to like this powder flows into.
The utility model, owing to having adopted above technical scheme, can significantly be eliminated the rectangular nozzle powder feeding and the few phenomenon in middle many both sides occur, makes powder can evenly be full of the meal outlet of whole rectangle, realizes even powder feeding.The metal-powder continuity of sending is good, good uniformity, deflection are good, good with laser rectangular light spot matching, after laser radiation, in metallic surface, can obtain the coating of larger width and thickness, greatly improved the efficiency of laser processing and the performance of coating.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 is the structural representation of rectangular nozzle;
Fig. 4 is Fig. 3 left view;
Fig. 5 is that Fig. 3 B-B is to sectional view;
Fig. 6 is that Fig. 3 C-C is to sectional view.
Wherein, 1-circular passage, 2-transition passage, the 3-gas passage of setting out on a journey, 4-rectangular nozzle; 5-annular powder chambers, 6-protection gas entrance, 7-rectangle powder feeding passage, 8-protection gas passage, 9-meal outlet; 10-powder inlet ，11-Xia road gas passage, 12-powder, 13-screen cloth.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
Embodiment 1:
A kind of laser processing as shown in Figure 1 is with the broadband nozzle of even powder feeding, comprise rectangular nozzle 4 and annular powder chambers 5, rectangular nozzle 4 is provided with rectangle powder feeding passage 7 and protection gas passage 8, one end of rectangle powder feeding passage 7 is meal outlet 9, protection gas passage 8 be arranged in parallel in meal outlet 9 peripheries and both, the other end of rectangle powder feeding passage 7 is the powder feeding gas passage, this powder feeding gas passage comprises a transition passage 2 and a circular passage 1, and transition passage 2 is realized the smooth even transition of circular passage 1 to rectangle powder feeding passage 7; Rectangular nozzle 4 is fixedly mounted in annular powder chambers 5, meal outlet 9 ends and circular passage 1 end of rectangular nozzle 4 stretch out annular powder chambers 5, the annular interior placement powder 12 of powder chambers 5 also is provided with gas passage, rectangular nozzle 4 is provided with powder inlet 10 in the side of rectangle powder feeding passage 7, and the powder 12 in annular powder chambers 5 enters rectangle powder feeding passage 7 by powder inlet 10; Wherein, described meal outlet 9, powder inlet 10 and rectangle powder feeding passage 7 have the shape of cross section that is complementary.Described annular powder chambers 5 has the gas passage of setting out on a journey 3 He Xia road gas passages 11, and in chamber, is provided with a screen cloth 13，Xia road gas passage 11 and is communicated in annular powder chambers 5 after via screen cloth 13.Described powder inlet 10 extends to the rectangle powder feeding passage 7 of level along circular arc.
In the present embodiment, in rectangular nozzle 4 first by circular passage 1 to funnel shaped transition passage 2, the rectangle powder feeding passage 7 that is complementary with laser facula length and width that finally converges one section level of formation.Protection gas passage 8 is in meal outlet 9 peripheries, and both are parallel relation.The side of rectangular nozzle 4 has a powder inlet 10 the same with width with meal outlet length, and powder inlet 10 is communicated with the rectangle powder feeding passage 7 of level, powder inlet 10 has certain radian with rectangle powder feeding passage 7 connectivity parts, and optimum radian is 5-10 °, is beneficial to powder 12 and flows into.Annular powder chambers 5 can coordinate with rectangular nozzle 4 is airtight.And should two gas passages 3 and 11 be arranged the annular powder chambers, the circular screen mesh 13 of a densification was arranged in chamber.
Rectangular nozzle 4 is arranged in annular powder chambers 5 before laser processing, the powder chambers size is greater than the size of nozzle, thus nozzle while being arranged in powder chambers surrounding leave space.The screen cloth 13 that one densification is arranged in powder chambers, the powder that the order number is larger than screen cloth can not see through screen cloth.Then in the annular powder chambers 5 of powder being packed into, during laser processing from circular gas passage 1, passing into powder feeding gas, powder feeding gas is by circular passage 1 transition passage 2 of flowing through, finally enter in the rectangle powder feeding passage 7 that is complementary with the laser rectangular light spot, wherein transition passage 2 is doline, is beneficial to gas and converges and enter powder channel 7.In powder chambers gas passage 3 and 11, pass into the gas of air pressure a little more than powder feeding gas, lower road gas is pressed into powder 12 in powder inlet 10 by screen cloth 13, and powder inlet 10 has certain fillet radius, and the R scope is at 5-10mm, be beneficial to powder and flow into smoothly, through powder feeding gas, carry ejection meal outlet 9.The width of powder inlet is identical with meal outlet length and width, is beneficial to powder and can evenly be full of whole meal outlet 9, and the gas of meanwhile setting out on a journey toward pressing down, is realized continuous powder feeding by the powder on top.Protection gas enters to protection gas passage 8 from protection gas entrance 6, through protection gas passage, sends, and protection laser processing zone is not oxidized.The metal-powder continuity that the utility model nozzle is sent is good, good uniformity, deflection are good, good with laser rectangular light spot matching, after laser radiation, in metallic surface, can obtain the coating of larger width and thickness, greatly improve the efficiency of laser processing and the performance of coating.
It is emphasized that: above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, every foundation technical spirit of the present utility model, to any simple modification, equivalent variations and modification that above embodiment does, all still belongs in the scope of technical solutions of the utility model.
Claims (3)
1. a laser processing is with the broadband nozzle of even powder feeding, it is characterized in that, comprise rectangular nozzle (4) and annular powder chambers (5), rectangular nozzle (4) is provided with rectangle powder feeding passage (7) and protection gas passage (8), one end of rectangle powder feeding passage (7) is meal outlet (9), protection gas passage (8) be arranged in parallel in meal outlet (9) periphery and both, the other end of rectangle powder feeding passage (7) is the powder feeding gas passage, this powder feeding gas passage comprises a transition passage (2) and a circular passage (1), transition passage (2) is realized the smooth even transition of circular passage (1) to rectangle powder feeding passage (7), rectangular nozzle (4) is fixed in annular powder chambers (5), meal outlet (9) end and circular passage (1) end of rectangular nozzle (4) stretch out annular powder chambers (5), in annular powder chambers (5), place powder (12) and be provided with gas passage, rectangular nozzle (4) is provided with powder inlet (10) in the side of rectangle powder feeding passage (7), and the powder (12) in annular powder chambers (5) enters rectangle powder feeding passage (7) by powder inlet (10), wherein, described meal outlet (9), powder inlet (10) and rectangle powder feeding passage (7) have the shape of cross section that is complementary.
2. a kind of laser processing according to claim 1 is with the broadband nozzle of even powder feeding, it is characterized in that, described annular powder chambers (5) has the gas passage of setting out on a journey (3) He Xia road gas passage (11), and in chamber, being provided with a screen cloth (13) ，Xia road gas passage (11) is communicated in annular powder chambers (5) after via screen cloth (13).
3. a kind of laser processing according to claim 1, with the broadband nozzle of even powder feeding, is characterized in that, described powder inlet (10) extends to the rectangle powder feeding passage (7) of level along camber line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202089792U CN203295605U (en) | 2013-04-22 | 2013-04-22 | Wideband nozzle for uniformly feeding powder for laser processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202089792U CN203295605U (en) | 2013-04-22 | 2013-04-22 | Wideband nozzle for uniformly feeding powder for laser processing |
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| Publication Number | Publication Date |
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| CN203295605U true CN203295605U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202089792U Expired - Lifetime CN203295605U (en) | 2013-04-22 | 2013-04-22 | Wideband nozzle for uniformly feeding powder for laser processing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205748A (en) * | 2013-04-22 | 2013-07-17 | 杭州东通激光科技有限公司 | Wideband nozzle capable of uniformly feeding powder in laser processing |
| CN105522150A (en) * | 2015-12-30 | 2016-04-27 | 哈尔滨工业大学 | Uniform powder feeding head suitable for production or deposition of semiconductor laser enhanced material |
| CN105839103A (en) * | 2016-05-16 | 2016-08-10 | 浙江工业大学 | Window type air escape type wide-belt powder feeding nozzle |
| CN106119836A (en) * | 2016-08-08 | 2016-11-16 | 浙江工业大学 | The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band |
-
2013
- 2013-04-22 CN CN2013202089792U patent/CN203295605U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205748A (en) * | 2013-04-22 | 2013-07-17 | 杭州东通激光科技有限公司 | Wideband nozzle capable of uniformly feeding powder in laser processing |
| CN103205748B (en) * | 2013-04-22 | 2015-04-01 | 杭州东通激光科技有限公司 | Wideband nozzle capable of uniformly feeding powder in laser processing |
| CN105522150A (en) * | 2015-12-30 | 2016-04-27 | 哈尔滨工业大学 | Uniform powder feeding head suitable for production or deposition of semiconductor laser enhanced material |
| CN105839103A (en) * | 2016-05-16 | 2016-08-10 | 浙江工业大学 | Window type air escape type wide-belt powder feeding nozzle |
| CN106119836A (en) * | 2016-08-08 | 2016-11-16 | 浙江工业大学 | The unload-type broadband powder-feeding nozzle of flow channel is protected on the downside of a kind of band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210825 Address after: 311100 room 413, South Building, No. 2, Chaofeng East Road, Yuhang Economic Development Zone, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU BOHUA LASER TECHNOLOGY Co.,Ltd. Address before: 310019 room 103, floor 1, building 1, No. 17, Jiuhe Road, Jianggan District, Hangzhou, Zhejiang Patentee before: HANGZHOU DONGTONG LASER TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |