CN2905302Y - Protective nozzle for laser welding - Google Patents
Protective nozzle for laser welding Download PDFInfo
- Publication number
- CN2905302Y CN2905302Y CN 200620001012 CN200620001012U CN2905302Y CN 2905302 Y CN2905302 Y CN 2905302Y CN 200620001012 CN200620001012 CN 200620001012 CN 200620001012 U CN200620001012 U CN 200620001012U CN 2905302 Y CN2905302 Y CN 2905302Y
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- protection
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Abstract
A protective nozzle for laser welding, which relates to a gas shielding device for laser welding of titanium alloys, comprising a main protective gas nozzle for protection of the welding pool and a tail cover for protection of the postwelding high-temperature zone of the welding seam, wherein the main protective gas nozzle is a double-decked nozzle structure; the tail cover is in fixed connection with escape end of the main protective gas nozzle, including a main tail cover (9) and a tail cover connecting component that is connected with the main protective gas nozzle; base plane of the main tail cover for gas outlet abuts on air outlet of the main protective gas nozzle and the angle between the base plane of the main tail and axial line of the main protective gas nozzle is an acute angle. Protective gases respectively from the double-decked nozzle and the main tail cover are of stable laminar flow, and the two kinds of laminar-flow gases are closely combined without mutual interference at the outlet to form a stable layer of protective gases to protect high-temperature zone of the welding seam. The utility model can be applied to plane scanning welding, or welding of T joints or angle joints, with easy installation and utilization, and can save the gas-flow rate.
Description
Technical field
The utility model relates to a kind of gas shield device that is used for Titanium Laser Welding.
Background technology
The titanium or titanium alloy material has that density is little, specific strength and excellent comprehensive performances such as specific stiffness height, good corrosion resistance, now has been widely used in aircaft configuration, aerospace industry and the war industry.
Laser weld has the power density height, speed of welding is fast, joint performance is good, welding deformation is little, simple to operate, easily realize outstanding advantages such as automation, and because the low-thermal conductivity of titanium alloy material reaches the infrared ray high-absorbility, make that the laser weld titanium alloy is easier to obtain deep penetration weldering, so the development of the laser weld of titanium alloy rapidly.
In the Titanium Laser Welding process, because the titanium or titanium alloy chemism is higher, under hot conditions, can react with many gases, pure titanium just begins strong absorption hydrogen, oxygen, nitrogen and interacts with these gases at 250 °, 400 °, 600 °.Hydrogen, oxygen, nitrogen can form interstitial solid solution with titanium in quite wide concentration range, reduce the welding point plastic deformation consumingly, so in the Titanium Laser Welding process, except that to the weld shielding, also answer the inert gas shielding in addition of butt welded seam high-temperature region.Existing Titanium Laser Welding weld seam front protecting device adopts side air blowing tube 28 to cooperate weld jig and laser welding system to realize welding the protection of high-temperature region with dragging cover 29 more.As Fig. 1, laser photo plasma and the protection welding pool of side air blowing tube 28 blow gas in order to produce in the control laser beam welding, high-temperature region, weld seam rear portion is by dragging cover 29 protections.Side air blowing tube 28 oblique cuttings go into gas shield drag the cover 29 in drag the cover blow gas protect weld seam jointly.The shortcoming of this titanium alloy protective device is a side air blowing tube 28 and drag the bad assurance of optimum state that cooperatively interacts of cover 29 air-flows; if drag cover 29 interior throughputs bigger; then side air blowing tube 28 blow out protective gas can with drag the cover 29 blow gas influence each other; thereby influence welding effect; and when dragging cover 29 gas flow amounts less; side air blowing tube 28 is when dragging cover 29 air-flows to reach the best fit state; drag cover 29 to give vent to anger the baseplane when nearer apart from welded specimen; this kind protected mode can be carried out butt plates welding; but when T junction or angle joint welding; drag the cover baseplane can not be infinitely close to the angle joint place; distance is far away; less hood throughput can not play a protective role by the diagonal angle joint, so the protection poor effect.
Summary of the invention
The purpose of this utility model is to solve the problem that existing laser weld titanium alloy protective device volume is big, be not suitable for T junction or angle joint welding; a kind of laser weld titanium alloy protective device is provided; this laser weld titanium alloy protective device not only compact conformation, easy to install, save gas flow, and both can be used in the flat-bed scanning weldering and also can be used in the welding of T junction or angle joint.
A kind of laser weld of the utility model protection nozzle press Fig. 2 and Fig. 5 scheme implementation, by the main protection gas jets of protection welding pool be used for protecting the hood of postwelding weld seam high-temperature region partly to form, the main protection gas jets is double-deck nozzle arrangements; The hood partial fixing is connected the outlet side of main protection gas jets, comprises main hood 9 and the hood attaching parts that link to each other with the main protection gas jets, and is provided with air inlet Q2; Wherein, the baseplane of giving vent to anger of main hood 9 is near the gas outlet of main protection gas jets, and with main protection gas jets axis institute angle be acute angle; In main hood 9, filter screen 12 is set perpendicular to the air current flow direction.
Above-described a kind of laser weld protection nozzle, the hood part also includes the additional hood 10 that is arranged on main hood 9 bottoms, the inside of additional hood 10 and main hood 9 inner spaces connect, and the baseplane of giving vent to anger of give vent to anger baseplane and main hood is positioned at same plane; The baseplane of giving vent to anger of additional hood 10 is provided with the additional hood venthole 11 parallel with main protection gas jets axis as outlet passageway.
Above-described a kind of laser weld protection nozzle, described hood attaching parts comprise hood air inlet pipe 4 and hood adapter sleeve 6, be enclosed within successively on the periphery of main protection gas jets pipeline section along the moving direction of main protection air-flow, with main protection gas jets concentric, air inlet Q2 is arranged on the hood air inlet pipe 4, one side of hood adapter sleeve 6 is connected with hood air inlet pipe 4, and opposite side is connected with additional hood 10 with main hood 9; Hood air inlet pipe 4, hood adapter sleeve 6 interpenetrate with main hood 9, additional hood 10 inner spaces.
Above-described a kind of laser weld protection nozzle, the hood tap hole 13 that diameter is set is 0.2～5mm between hood adapter sleeve 6 and the additional hood 10 is as gas flow channel.
Give vent to anger baseplane and the main protection gas jets segment axis institute angle at side place of above-described a kind of laser weld protection nozzle, main hood 9, additional hood 10 is 30～60 to spend.
Described main protection gas jets part by nozzle top cover 1, main protection gas isocon 2, transfer tube 3, skin converge tracheae 7, central core converges tracheae 5 and central core gaseous core 8 constitutes, main protection gas isocon 2 is provided with air inlet Q1, and the inner passage is respectively air chamber, the central core gas channel 18 that is connected with air inlet Q1 and the cross section that is evenly distributed on central core gas channel periphery along airflow direction and divides outer gas channel 14 for circular commentaries on classics; Wherein nozzle top cover 1, main protection gas isocon 2, central core converge tracheae 5, central core gaseous core 8 from left to right concentric be connected successively; constitute the internal layer gas channel; and main protection gas isocon 2, transfer tube 3, skin converge tracheae 7 from left to right successively concentric be connected, the commentaries on classics of main protection gas isocon 2 divides outer gas channel 14 and skin to converge tracheae 7 and central core to converge and constitute the outer gas flow passage between the tracheae 5.
It is 4～16 that the described commentaries on classics that is evenly distributed on around the central core gas channel 18 divides outer gas channel 14.
Described hood air inlet pipe 4 is connected with transfer tube 3 in the main protection gas jets.
Above-described a kind of laser weld protection nozzle; changing nozzle top cover 1 is the wire feed clamping device 1 ' of elasticity clamping structure for last top; clamp thread cap 16 by screwing the wire feed that links to each other with wire feed clamping device 1 '; to insert wire-feeding pipe 17 clampings in the wire feed clamping device 1 ', this laser weld protection spray nozzle device promptly becomes laser weld wire feed protection nozzle.
The design principle of a kind of welding protection nozzle of the present utility model is: adopt the double-deck main protection gas tailing cover structure of side-blown; can obtain certain flow and laminar flow regime better protect gas, not only can control the photo plasma that produces in the laser beam welding but also can prevent in the laser weld titanium alloy process oxidized.Angled 30 degree that are about in main protection gas jets structure division central axis and welded specimen plane are to 60 degree; main protection gas is by air inlet Q1 air inlet on the main protection gas isocon 2; to protect gas to be divided into the double shielding gas that gaseous state is a laminar flow by main protection gas isocon 2; wherein the central core protective gas is in order to control the laser photo plasma that produces in the laser beam welding; outer protective gas is in order to protect the weld seam molten bath in order to avoid welding pool is oxidized; experimental results show that than single ply protective gas, adopt double-deck main protection gas appearance of weld better.In addition, the hood structure adds additional hood 10 structures after adopting main hood 9, and additional hood 10 bottom surfaces are additional hood venthole 11, has both enlarged the protection domain of weld seam lower temperature region, has saved throughput again.Main hood 9 is same plane with additional hood 10 bottom surfaces, hood bottom surface and welded specimen plane parallel in the welding process.Hood protection gas is by air inlet Q2 air inlet on the hood air inlet pipe 4; gas enters in hood adapter sleeve 6 air chambers through the gas passage of hood air inlet pipe 4 and hood adapter sleeve 6; gas is divided into protection gas A and B two parts by filter screen 12 gas lens that communicate with main hood 9 and the hood tap hole 13 that communicates with additional hood 10 respectively; respectively to main hood 9 and additional hood 10 ventilations; but guarantee that gas flow is greater than gas flow in the additional hood 10 in the main hood 9; main hood 9 Inner filter nets 12 constitute the gas lens structure and guarantee that blow gas is the laminar flow structure, and laminar flow gas avoids the surrounding air disturbance with the oxidation of high temperature weld seam the emptying of weld seam surrounding air.Because double-deck main protection gas, main hood 9 protective gas, additional hood 10 protective gas; be laminar flow gas; and in the nozzle exit close proximity; but can the phase mutual interference; closely connect void-free protection gas-bearing formation successively thereby form three kinds of protective gas, the in addition inert gas shielding of butt welded seam high-temperature region along bead direction.And, its protection gas jets part of a kind of laser weld titanium alloy of the utility model protective device is the laminar flow structure because partly blowing out protective gas with hood; laminar flow length can reach 30mm; so when welding T connector or angle joint; the nozzle hood is apart from the angle joint weld seam in certain distance the time; laminar air flow also can shield by the diagonal angle joint; can not cause near the air moving of angle joint, reach fine protection effect.
In addition, be the wire feed clamping device 1 ' of elasticity clamping structure by changing nozzle top cover 1 for last top, one of to join and to clamp thread cap 16, this device is a kind of wire feed protective device of Titanium Laser Welding, thereby improves the weld seam mechanical performance.
So can being used in, do not add in the Titanium Laser Welding process of filling material by a kind of laser weld titanium alloy of the utility model protective device; also can flexible Application in the wire feed laser weld; this device has reduced the gas path joint in the laser weld titanium alloy process, saves throughput, promptly can weld the flat scanning weldering and also can be used for welding T connector or the welding of angle joint form.
Description of drawings
Fig. 1 prior art titanium alloy protective device work schematic diagram
A kind of laser weld titanium alloy protection of Fig. 2 the utility model device nozzle arrangements figure
Fig. 3 Fig. 2 A-A profile
Fig. 4 Fig. 2 B-B profile
Fig. 5 the utility model device adds the laser weld titanium alloy protection nozzle of additional hood
Fig. 6 the utility model device laser weld titanium alloy wire feed protection nozzle
Fig. 7 the utility model device stereogram
A kind of laser weld titanium alloy of Fig. 8 the utility model protective device work scheme of installation
Among the figure, 1; the nozzle top cover, 1 '; the wire feed clamping device; 2; main protection gas isocon, 3; transfer tube, 4; the hood air inlet pipe; 5; central core converges tracheae, and 6; the hood adapter sleeve, 7; skin converges tracheae; 8; the central core gaseous core, 9; main hood, 10; additional hood; 11; additional hood venthole, 12; filter screen, 13; the hood tap hole; 14; isocon changes the outer gas channel of branch, 15; welding wire, 16; wire feed clamps thread cap; 17; wire-feeding pipe, 18; the central core gas channel, 19; screwed hole; 20; laser instrument, 21; light-conducting system, 22; laser welding system; 23; install and adjust servicing unit, 24; laser weld protection nozzle, 25 welded specimens; 26; focus lamp; 27; laser beam, 28; side air blowing tube, 29; drag cover; 30; drag the cover tracheae, 31; back of the body protection tracheae.
The specific embodiment
Specify preferred embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment one:
Present embodiment requires processing, assembling according to Fig. 2, Fig. 3, Fig. 4 art designs, and main protection gas jets portion nozzle top cover 1, main protection gas isocon 2, central core converge tracheae 5, central core gaseous core 8 concentrics from left to right successively with the screw thread center conveyor layer protective gas that be connected; Main protection gas isocon 2, transfer tube 3, skin converge tracheae 7 from left to right successively concentric be connected with screw thread; central core gas channel 18 peripheries of main protection gas isocon 2 evenly 10 cross sections of distribution are divided outer gas channel 14 for circular commentaries on classics; commentaries on classics divides outer gas channel 14 and skin to converge tracheae 7 and central core converges formation outer gas flow passage between the tracheae 5, carries outer protective gas.
The hood attaching parts that main hood 9 links to each other with the main protection gas jets comprise hood air inlet pipe 4 and hood adapter sleeve 6, and air inlet Q2 is set on the hood air inlet pipe 4; Hood air inlet pipe 4 and hood adapter sleeve 6 are enclosed within on the periphery of main protection gas jets pipeline section successively along the moving direction of main protection air-flow; air inlet pipe 4 is connected with screw thread with main protection gas jets part transfer tube 3 concentrics; hood adapter sleeve 6 upper ends and hood air inlet pipe 4 concentrics are to be threaded; lower end and main hood 9 are connected with screw by hood adapter sleeve 6 upper screwed holes 19; in main hood 9,, adopt hood adapter sleeve 6 and main hood 9 to compress mode mutually and fixedly mount a filter screen 12 perpendicular to the air current flow direction.Hood adapter sleeve 6 adopts and makes as Fig. 4 structure that gas channel communicates between hood air inlet pipe 4, hood adapter sleeve 6, the main hood 9; Skin converges tracheae 7 and inserts in hood adapter sleeve 6 and the main hood 9; adopt the tight fit connected mode to connect; make the gas outlet of baseplane of giving vent to anger of main hood 9 near the main protection gas jets; make the ectonexine nozzle blow out laminar flow protective gas and main hood 9 and blow out protective layer gas body and link to each other to be connected into and stablize the protective gas layer, thus along bead direction form double-deck main protection gas, main hood 9 protective gas closely connect void-free protection gas-bearing formation successively.
Embodiment two:
The structure of present embodiment is specifically referring to Fig. 5, and the structure of main protection gas jets part is with embodiment one, and hood partly comprises main hood 9 and additional hood 10.Additional hood 10 is connected with screw by additional hood upper screwed hole 19 and main hood 9, and the hood airflow hole 13 that diameter is set is 0.5mm between hood adapter sleeve 6 and the additional hood 10 makes hood air inlet pipe 4, hood adapter sleeve 6 and main hood 9, add hood 10 inner spaces interpenetrates.The baseplane of giving vent to anger of additional hood 10 is provided with the central axis additional hood venthole 11 parallel with main protection gas jets axis as outlet passageway.
Embodiment three:
The present embodiment concrete structure is referring to Fig. 6; it is the wire feed clamping device 1 ' of elasticity clamping structure for last top that embodiment two is changed nozzle top cover 1; clamp thread cap 16 by screwing the wire feed that links to each other with wire feed clamping device 1 '; to insert wire-feeding pipe 17 clampings in the wire feed clamping device 1 '; thereby reach collimation welding wire function, this laser weld protection spray nozzle device promptly becomes laser weld wire feed protection nozzle.Present embodiment also can change nozzle top cover 1 on the basis of embodiment one, form laser weld wire feed protection nozzle.
Use schematic diagram of the present utility model is referring to Fig. 8; adopting installation to adjust servicing unit 23 side direction is installed in the laser welding system; two hood bottom surfaces are positioned at same plane; the hood bottom surface parallels with welded specimen in the laser beam welding; in this specific embodiment; hood bottom surface and main protection gas jets angulation are 45 degree, that is the utility model device angle of inclination is 45 degree.
Claims (9)
1, a kind of laser weld protection nozzle comprises the hood part that is used for protecting the main protection gas jets of welding pool and is used for protecting postwelding weld seam high-temperature region, and it is characterized in that: the main protection gas jets is double-deck nozzle arrangements; The hood partial fixing is connected the outlet side of main protection gas jets, comprises main hood (9) and the hood attaching parts that link to each other with the main protection gas jets, and is provided with air inlet Q2; Wherein, the baseplane of giving vent to anger of main hood (9) is near the gas outlet of main protection gas jets, and with main protection gas jets axis institute angle be acute angle; In main hood (9), filter screen (12) is set perpendicular to the air current flow direction.
2, a kind of laser weld protection nozzle according to claim 1, it is characterized in that: the hood part also includes the additional hood (10) that is arranged on main hood (9) bottom, the inside of additional hood (10) and main hood (9) inner space connect, and the baseplane of giving vent to anger of give vent to anger baseplane and main hood is positioned at same plane; The baseplane of giving vent to anger of additional hood (10) is provided with the central axis additional hood venthole (11) parallel with main protection gas jets axis as outlet passageway.
3, a kind of laser weld protection nozzle according to claim 1 and 2, it is characterized in that: described hood attaching parts comprise hood air inlet pipe (4) and hood adapter sleeve (6), be enclosed within successively on the periphery of main protection gas jets pipeline section along the moving direction of main protection air-flow, with main protection gas jets concentric, air inlet Q2 is arranged on the hood air inlet pipe (4), one side of hood adapter sleeve (6) is connected with hood air inlet pipe (4), and opposite side is connected with additional hood (10) with main hood (9); Hood air inlet pipe (4), hood adapter sleeve (6) interpenetrate with main hood (9), additional hood (10) inner space.
4, a kind of laser weld protection nozzle according to claim 3 is characterized in that: the hood tap hole (13) that diameter is set is 0.2～5mm between hood adapter sleeve (6) and the additional hood (10) is as gas flow channel.
5, a kind of laser weld protection nozzle according to claim 1 and 2 is characterized in that: give vent to anger baseplane and the main protection gas jets segment axis institute angle at side place of main hood (9), additional hood (10) is 30～60 to spend.
6, a kind of laser weld protection nozzle according to claim 1, it is characterized in that: described main protection gas jets part is by nozzle top cover (1), main protection gas isocon (2), transfer tube (3), skin converges tracheae (7), central core converges tracheae (5) and central core gaseous core (8) constitutes, main protection gas isocon (2) is provided with air inlet Q1, and the inner passage is respectively the air chamber that is connected with air inlet Q1 along airflow direction, outer gas channel (14) is divided for circular commentaries on classics in central core gas channel (18) and the cross section that is evenly distributed on central core gas channel periphery; Wherein nozzle top cover (1), main protection gas isocon (2), central core converge tracheae (5), central core gaseous core (8) from left to right concentric be connected successively; constitute the internal layer gas channel; and main protection gas isocon (2), transfer tube (3), skin converge tracheae (7) concentric are connected successively from left to right, and the commentaries on classics of main protection gas isocon (2) divides outer gas channel (14) and skin to converge tracheae (7) and central core to converge and constitute the outer gas flow passage between the tracheae (5).
7, a kind of laser weld protection nozzle according to claim 6 is characterized in that: describedly be evenly distributed on central core gas channel (18) commentaries on classics on every side to divide outer gas channel (14) be 4～16.
8, a kind of laser weld protection nozzle according to claim 6 is characterized in that: described hood air inlet pipe (4) is connected with transfer tube (3) in the main protection gas jets.
9, a kind of laser weld protection nozzle according to claim 1; it is characterized in that: be wire feed clamping device (1 ') the replacement nozzle top cover (1) of elasticity clamping structure by last top; wire feed clamps thread cap (16) and links to each other with wire feed clamping device (1 '); wire-feeding pipe (17) is inserted in the wire feed clamping device (1 '), constitutes laser weld wire feed protection nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620001012 CN2905302Y (en) | 2006-01-18 | 2006-01-18 | Protective nozzle for laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620001012 CN2905302Y (en) | 2006-01-18 | 2006-01-18 | Protective nozzle for laser welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2905302Y true CN2905302Y (en) | 2007-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620001012 Expired - Fee Related CN2905302Y (en) | 2006-01-18 | 2006-01-18 | Protective nozzle for laser welding |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934430A (en) * | 2009-06-29 | 2011-01-05 | 株式会社日立工业设备技术 | Laser narrow groove welding apparatus and welding method |
| CN102581491A (en) * | 2012-03-01 | 2012-07-18 | 江苏科技大学 | Laser welding method for injection molding of Al-Zn-Mg-Cu aluminum alloy |
| CN103658983A (en) * | 2013-12-09 | 2014-03-26 | 北京航星机器制造有限公司 | Laser welding titanium alloy front face non-dragging-cover gas protecting device |
| CN104625402A (en) * | 2013-11-14 | 2015-05-20 | 大族激光科技产业集团股份有限公司 | Laser seam side-blown protection device, welding device and welding method |
| CN104874915A (en) * | 2015-05-22 | 2015-09-02 | 南京南车浦镇城轨车辆有限责任公司 | Protective gas sprayer for laser welding T junction |
| CN108500453A (en) * | 2018-05-28 | 2018-09-07 | 苏州迅镭激光科技有限公司 | A kind of wire filling laser welding connector device |
| CN109277696A (en) * | 2018-10-29 | 2019-01-29 | 北京航天新风机械设备有限责任公司 | A kind of midget tube pipe docking laser welding point protective device |
| CN110355467A (en) * | 2018-04-09 | 2019-10-22 | 上海第一机床厂有限公司 | The method of laser welding protective gas conveying device and laser welding |
| CN114083118A (en) * | 2021-08-02 | 2022-02-25 | 北京工业大学 | Protection device for actively regulating and controlling laser welding small hole and molten pool |
| CN114888469A (en) * | 2022-06-10 | 2022-08-12 | 北京工业大学 | Nozzle and vibrating mirror laser welding gas protection device |
| DE102022128180A1 (en) | 2022-10-25 | 2024-04-25 | TRUMPF Werkzeugmaschinen SE + Co. KG | Media supply during laser welding |
| EP4249161A4 (en) * | 2020-11-19 | 2024-05-08 | Amada Co Ltd | Side nozzle, laser welder, and laser welding method |
-
2006
- 2006-01-18 CN CN 200620001012 patent/CN2905302Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8481885B2 (en) | 2009-06-29 | 2013-07-09 | Hitachi Plant Technologies, Ltd. | Laser narrow groove welding apparatus and welding method |
| CN101934430A (en) * | 2009-06-29 | 2011-01-05 | 株式会社日立工业设备技术 | Laser narrow groove welding apparatus and welding method |
| CN102581491A (en) * | 2012-03-01 | 2012-07-18 | 江苏科技大学 | Laser welding method for injection molding of Al-Zn-Mg-Cu aluminum alloy |
| CN104625402A (en) * | 2013-11-14 | 2015-05-20 | 大族激光科技产业集团股份有限公司 | Laser seam side-blown protection device, welding device and welding method |
| CN103658983A (en) * | 2013-12-09 | 2014-03-26 | 北京航星机器制造有限公司 | Laser welding titanium alloy front face non-dragging-cover gas protecting device |
| CN104874915A (en) * | 2015-05-22 | 2015-09-02 | 南京南车浦镇城轨车辆有限责任公司 | Protective gas sprayer for laser welding T junction |
| CN110355467A (en) * | 2018-04-09 | 2019-10-22 | 上海第一机床厂有限公司 | The method of laser welding protective gas conveying device and laser welding |
| CN108500453A (en) * | 2018-05-28 | 2018-09-07 | 苏州迅镭激光科技有限公司 | A kind of wire filling laser welding connector device |
| CN109277696A (en) * | 2018-10-29 | 2019-01-29 | 北京航天新风机械设备有限责任公司 | A kind of midget tube pipe docking laser welding point protective device |
| EP4249161A4 (en) * | 2020-11-19 | 2024-05-08 | Amada Co Ltd | Side nozzle, laser welder, and laser welding method |
| CN114083118A (en) * | 2021-08-02 | 2022-02-25 | 北京工业大学 | Protection device for actively regulating and controlling laser welding small hole and molten pool |
| CN114888469A (en) * | 2022-06-10 | 2022-08-12 | 北京工业大学 | Nozzle and vibrating mirror laser welding gas protection device |
| DE102022128180A1 (en) | 2022-10-25 | 2024-04-25 | TRUMPF Werkzeugmaschinen SE + Co. KG | Media supply during laser welding |
| WO2024088852A1 (en) | 2022-10-25 | 2024-05-02 | TRUMPF Werkzeugmaschinen SE + Co. KG | Media supply during laser welding |
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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: 20070530 Termination date: 20140118 |