CN203227932U - Multi-layer gas curtain laser cutting head - Google Patents
Multi-layer gas curtain laser cutting head Download PDFInfo
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- CN203227932U CN203227932U CN 201320268981 CN201320268981U CN203227932U CN 203227932 U CN203227932 U CN 203227932U CN 201320268981 CN201320268981 CN 201320268981 CN 201320268981 U CN201320268981 U CN 201320268981U CN 203227932 U CN203227932 U CN 203227932U
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Abstract
The utility model discloses a multi-layer gas curtain laser cutting head, comprising a laser focusing head outer sleeve, a focusing lens group, a first layer of sprayers, a second layer of sprayers, a third layer of sprayers and a laser machining gas inlet, wherein the focusing lens group is arranged on the upper end of the laser focusing head outer sleeve; the first layer of sprayers, the second layer of sprayers, the third layer of sprayers and the laser machining gas inlet are arranged on the side wall of the laser focusing head outer sleeve in sequence from top to bottom; a laser machining spray nozzle is arranged on the lower end of the laser focusing head outer sleeve; a protection window mirror is arranged in the laser focusing head outer sleeve; and the protection window mirror is vertical to the optical axis of the focusing lens group and is arranged between the third layer of sprayers and the laser machining gas inlet. Due to the reasonable layout of multiple layers of shielding gas sprayers, the flow direction and pressure of shielding gas are controlled, and a more reliable protection effect is reached.
Description
Technical field
The utility model relates to field of lasers, more specifically relate to a kind of multilayer gas curtain type laser cutting head, be applicable to various machine-building processing industries such as lathe, engineering machinery, electric switch manufacturing, elevator manufacturing, grain machinery, textile machine, locomotive manufacturing, agriculture and forestry machinery, food machinery, special car, petroleum machinery manufacturing, environmental protection equipment, household electrical appliance manufacturing, big dynamo sheet.
Background technology
Continuous development along with laser technology, laser equipment has become one of important equipment of modernization processing, advantages such as the high efficiency of its process, controllability, the feature of environmental protection, energy saving have been subjected to the favor in market, are bringing into play more and more important effect in the great industry of national economy such as metallurgy, iron and steel, automobile.
In general laser equipment mainly is made up of unit such as LASER Light Source, optic path system, optical focus head, controlling organization, motion, secondary process systems.The laser beam that LASER Light Source produces to the optical focus head, focuses on the large scale hot spot application such as needed hot spot cuts, welding, heat treatment through outer optic path system transmissions.Because in the process of processing, high with the interactional focus of processed workpiece place power density, moment is with workpiece fusing (gasification), produce a large amount of plasmas simultaneously and sputter a large amount of residues, these residues can enter cutting head inside along light path part, are attached to focusing lens surface contamination focus lamp, thereby cause the infringement of focusing lens or burst, influence the operate as normal of laser focusing head, the long-term safety that has restricted laser equipment is in actual applications moved reliably.
Be head it off, laser focusing head has adopted the kinds of protect technology in the process of design, increases a slice laser radiation window mirror at the focus lamp front end usually, directly pollutes focus lamp to stop the residue that splashes.Perhaps between focus lamp and protection window mirror, seal or feed gas and form positive pressure protect, directly pollute focusing lens with the obstruct residue that splashes by protection window mirror.Though but this type of scenario-frame is simple, when the closed chamber bad sealing between the damage of laser radiation window mirror or protection window mirror and the focus lamp, still have small residue and enter, cause the breakage of focusing lens, influence the normal operation of this equipment.
The utility model content
The purpose of this utility model is the problems referred to above that are at the prior art existence; a kind of multilayer gas curtain type laser cutting head is provided; by the rational deployment of multilayer protection gas blowout head, flow direction and the pressure of control protective gas reach and protect effect more reliably.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of multilayer gas curtain type laser cutting head; comprise the laser focusing head outer sleeve; also comprise the focus lamp group that is arranged on laser focusing head outer sleeve upper end; also comprise the ground floor shower nozzle that is successively set on from top to bottom on the laser focusing head outer sleeve sidewall, second layer shower nozzle, the 3rd layer of shower nozzle and laser processing gas air inlet; laser focusing head outer sleeve lower end is provided with laser machining nozzle; be provided with protection window mirror in the laser focusing head outer sleeve, protection window mirror is perpendicular to the optical axis of focus lamp group and between the 3rd layer of shower nozzle and laser processing gas air inlet.
Aforesaid ground floor shower nozzle is at least 1, is distributed on the circumference of axle centered by the optical axis of focus lamp group; Described second layer shower nozzle is at least 1, is distributed on the circumference of axle centered by the optical axis of focus lamp group; Described the 3rd layer of shower nozzle is at least 1, is distributed on the circumference of axle centered by the optical axis of focus lamp group.
The shower nozzle Way out of aforesaid ground floor shower nozzle is β towards the angle of the optical axis of focus lamp group and shower nozzle Way out and focus lamp group, 30 °≤β≤90 °; The shower nozzle Way out of second layer shower nozzle is α towards the angle of the optical axis of laser processing gas air inlet and shower nozzle Way out and focus lamp group, 30 °≤α≤90 °; The shower nozzle Way out of the 3rd layer of shower nozzle is vertical with the optical axis of focus lamp group.
Aforesaid focus lamp group is single eyeglass or at least 2 lens set that eyeglass is formed, and the upper and lower surface of each eyeglass is all plated and is provided with anti-reflection film.
The utility model compared with prior art has the following advantages:
1, adopts the laser radiation layer of superhard rete, improved the discretionary protection ability of outermost layer focusing lens.
2, adopt the two way seal technology, improved the seal degree of sealing chamber between focus lamp and the protection window mirror.
3, the multilayer of annular array type protection shower nozzle; make protection gas form the malleation that is evenly distributed at closed chamber, in case during the damage of protection window mirror, will form window directionality air-flow; obstruction is splashed residue to pollution and the infringement of focusing lens, realizes safe and reliable protection.
4, equipment volume is less, frame for movement realizes and adjust simple, lighter weight, is convenient to commercial Application.
Description of drawings
Fig. 1 is structure chart of the present utility model.
Among the figure: the laser beam of 1-behind collimation; 2-laser focusing head outer sleeve; 3-focus lamp group; 4-seal protection chamber; 5-ground floor shower nozzle; 6-second layer shower nozzle; The 3rd layer of shower nozzle of 7-; 8-protection window mirror; The 9-laser machining nozzle; 10-ground floor protection gas air inlet; 11-second layer protection gas air inlet; 12-three-layer protection gas air inlet; 13-laser processing gas air inlet; The G-laser optical path.
Fig. 2 is the structure cutaway view of A-A among Fig. 1.
Fig. 3 is the schematic diagram of laser Machining head work of the present utility model.
Among the figure: P1 is ground floor shower nozzle 5 admission pressures; P2 is second layer shower nozzle 6 admission pressures; P3 is the 3rd layer of shower nozzle 7 admission pressure; a, b, c are protection window mirror 8 and damage back first, second and third layer shower nozzle charge air flow direction; β exports the angle of 5 center lines and focus lamp group optical axis for the ground floor shower nozzle, and α exports the angle of 6 center lines and focus lamp group optical axis for second layer shower nozzle.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described in further detail.
As shown in Figure 1, the utility model adopts set of lenses as the optical focus mirror, the seal protection chamber that multilayer protection jet array distributes, protection window mirror, focus head outer sleeve, working nozzle.Direction and the size of the air-flow by control different layers position jet array realize protecting more efficiently, improve the security of focusing lens in the laser processing procedure.
Ground floor shower nozzle 5 is close to focus lamp group 3 lower surfaces, the longitudinal profile of each spray orifice is V-structure, it can be the spray orifice of circle, rectangle, shape such as square, week along the optical axis of focus lamp group 3 evenly distributes, each shower nozzle center line of discharge and laser center line exist certain acute angle or right angle angle, its angle is β, each shower nozzle center line of discharge exists certain acute angle or right angle angle with protection gas air inlet center line, the bearing of trend of protection gas air inlet passes the center of circle of focus head outer sleeve cross section, and its angle is 1≤90 ° of γ 1(0 °≤γ); Second layer shower nozzle is positioned at the middle part of column type seal protection chamber, spray orifice for round, rectangle, shape such as square, week along closed chamber evenly distributes, each shower nozzle center line of discharge and laser center line exist certain acute angle or right angle angle, its angle is α, and each shower nozzle center line of discharge exists certain acute angle or right angle angle with protection gas air inlet center line, and its angle is 2≤90 ° of γ 2(0 °≤γ), γ 1, γ 2 can equate, also can be unequal; The 3rd layer of shower nozzle is close to the upper surface of protection window mirror, is the spray orifice of round, rectangle, shape such as square, and along evenly distributing in a week of seal protection chamber, the axis of each shower nozzle is vertical with laser beam axis; The laser beam of incident passes focusing lens, seal protection chamber, protection window mirror, laser machining nozzle successively, forms focal beam spot at focussing plane.Because adopted the protective gas of multilayer different angles incidents, the probability of the damage of focus head place laser condensing lens reduces greatly, realize the safer reliable operation of laser focusing head.
As shown in Figure 1, laser beam 1 is generally light beams such as laser through the solid state laser behind the optical system collimation, semiconductor laser, light laser, gas CO2 laser;
Laser focusing head outer sleeve 2 is for whole laser focusing head provides mechanical support.
Seal protection chamber 4 is made up of below a slice eyeglass, protection window mirror 8, ground floor shower nozzle 5, second layer shower nozzle 6 and the 3rd layer of shower nozzle 7 of focus lamp group 3.A slice eyeglass lower end, below of focus lamp group 3 and protection window mirror 8 upper ends all seal the indoor pure protection gas that normal pressure is arranged of seal protection with sealing ring.
Ground floor protection gas air inlet 10, second layer protection gas air inlet 11, three-layer protection gas air inlet 12 are air inlet, the gas pressure of the air admission hole of different layers and the airflow direction difference of seal protection chamber 4.
Laser processing gas air inlet 13 is the air inlet of Laser Processing assist gas, for Laser Processing (cutting, welding, heat treatment) provides necessary assist gas.
The course of work of laser Machining head described in the utility model is as follows:
As shown in Figure 3, provided the schematic diagram of this laser Machining head work, under normal operation, ground floor shower nozzle 5 is close to focus lamp group 3 lower surfaces, the longitudinal profile of each spray orifice is V-structure, for round, rectangle, the spray orifice of shape such as square, week along the seal protection chamber evenly distributes, each shower nozzle center line of discharge and laser center line exist certain acute angle or right angle angle, its angle is β (being the angle of the optical axis of the Way out of spray orifice of ground floor shower nozzle 5 and focus lamp group 3) (30 °≤β≤90 °), to guarantee that entering seal protection chamber 4 gas inside flows along last a slice focus lamp lower surface; Second layer shower nozzle 6 is positioned at the middle part of column type seal protection chamber, each spray orifice is V-structure, be round, rectangle, shape spray orifice such as square, along evenly distributing in one week of closed chamber, each shower nozzle center line of discharge and laser center line exist certain acute angle or right angle angle, its angle is α (being the angle of the optical axis of the Way out of spray orifice of second layer shower nozzle 6 and focus lamp group 3) (30 °≤α≤90 °), this part jet array is when providing malleation for the seal protection chamber, and the provider is to the air pressure that points to protection window direction; The 3rd layer of shower nozzle 7 is close to the upper surface of protection window mirror; be round, rectangle, shape spray orifice such as square; one week evenly distributed along the seal protection chamber; each shower nozzle center line of discharge is vertical with laser beam axis; this part jet array is when providing malleation for the protection chamber, for the protection window provides the laminar flow protection.Because after the breakage of sputter residue, residue will enter the protection chamber, the sealing of protection chamber is destroyed when protection window mirror 8.The crossflow c that this moment, the 3rd layer of shower nozzle 7 provided plays the first blockage effect, second layer shower nozzle 6 lateral airflow b has downwards played the second blockage effect simultaneously, ground floor shower nozzle 5 has played the three-blockage effect at focus lamp lower surface air flow a at a high speed, the admission pressure P1 of ground floor shower nozzle 5 is greater than the admission pressure P2 of second layer shower nozzle 6 in the application of reality, and the admission pressure P2 of second layer shower nozzle 6 is greater than the admission pressure P3 of the 3rd layer of shower nozzle 7.Therefore this moment, the seal protection chamber formed the air velocity distribution shown in the direction of arrow among Fig. 3, and the residue that splashes can't pass the seal protection chamber and be attached to the focusing lens surface, and lens surface has been played great protective effect.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (4)
1. multilayer gas curtain type laser cutting head; comprise laser focusing head outer sleeve (2); it is characterized in that; also comprise the focus lamp group (3) that is arranged on laser focusing head outer sleeve (2) upper end; also comprise the ground floor shower nozzle (5) that is successively set on from top to bottom on laser focusing head outer sleeve (2) sidewall; second layer shower nozzle (6); the 3rd layer of shower nozzle (7) and laser processing gas air inlet (13); laser focusing head outer sleeve (2) lower end is provided with laser machining nozzle (9); be provided with protection window mirror (8) in the laser focusing head outer sleeve (2), protection window mirror (8) perpendicular to the optical axis of focus lamp group (3) and be positioned at the 3rd layer of shower nozzle (7) and laser processing gas air inlet (13) between.
2. a kind of multilayer gas curtain type laser cutting head according to claim 1 is characterized in that described ground floor shower nozzle (5) is at least 1, is distributed on the circumference of axle centered by the optical axis of focus lamp group (3); Described second layer shower nozzle (6) is at least 1, is distributed on the circumference of axle centered by the optical axis of focus lamp group (3); Described the 3rd layer of shower nozzle (7) is at least 1, is distributed on the circumference of axle centered by the optical axis of focus lamp group (3).
3. a kind of multilayer gas curtain type laser cutting head according to claim 1, it is characterized in that, the shower nozzle Way out of described ground floor shower nozzle (5) is β towards the angle of the optical axis of focus lamp group (3) and shower nozzle Way out and focus lamp group (3), 30 °≤β≤90 °; The shower nozzle Way out of second layer shower nozzle (6) is α towards the angle of the optical axis of laser processing gas air inlet (13) and shower nozzle Way out and focus lamp group (3), 30 °≤α≤90 °; The shower nozzle Way out of the 3rd layer of shower nozzle (7) is vertical with the optical axis of focus lamp group (3).
4. a kind of multilayer gas curtain type laser cutting head according to claim 1 is characterized in that, described focus lamp group (3) is single eyeglass or at least 2 lens set that eyeglass is formed, and the upper and lower surface of each eyeglass is all plated and is provided with anti-reflection film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320268981 CN203227932U (en) | 2013-05-17 | 2013-05-17 | Multi-layer gas curtain laser cutting head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320268981 CN203227932U (en) | 2013-05-17 | 2013-05-17 | Multi-layer gas curtain laser cutting head |
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| CN203227932U true CN203227932U (en) | 2013-10-09 |
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| CN 201320268981 Expired - Fee Related CN203227932U (en) | 2013-05-17 | 2013-05-17 | Multi-layer gas curtain laser cutting head |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521921A (en) * | 2013-10-29 | 2014-01-22 | 西安炬光科技有限公司 | High-power semiconductor laser processing system |
| CN103537795A (en) * | 2013-10-29 | 2014-01-29 | 西安炬光科技有限公司 | High power semiconductor laser processing system |
| CN105880830A (en) * | 2015-01-26 | 2016-08-24 | 宝山钢铁股份有限公司 | Laser welding machine |
| CN106825919A (en) * | 2017-03-24 | 2017-06-13 | 燕山大学 | A kind of laser head lens protecting device |
| RU2624568C2 (en) * | 2015-10-02 | 2017-07-04 | Открытое акционерное общество "558 Авиационный ремонтный завод" | Method of laser material processing (versions) |
| CN108356413A (en) * | 2017-01-24 | 2018-08-03 | 大族激光科技产业集团股份有限公司 | A kind of laser welding head |
| CN110153554A (en) * | 2018-02-16 | 2019-08-23 | 发那科株式会社 | Laser Machining head |
| CN112276346A (en) * | 2020-10-22 | 2021-01-29 | 温州大学 | Automatic accurate focusing processing head of super high power laser cutting |
-
2013
- 2013-05-17 CN CN 201320268981 patent/CN203227932U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521921A (en) * | 2013-10-29 | 2014-01-22 | 西安炬光科技有限公司 | High-power semiconductor laser processing system |
| CN103537795A (en) * | 2013-10-29 | 2014-01-29 | 西安炬光科技有限公司 | High power semiconductor laser processing system |
| CN103537795B (en) * | 2013-10-29 | 2016-03-30 | 西安炬光科技股份有限公司 | High-power semiconductor laser system of processing |
| CN105880830B (en) * | 2015-01-26 | 2017-11-28 | 宝山钢铁股份有限公司 | Laser welder |
| CN105880830A (en) * | 2015-01-26 | 2016-08-24 | 宝山钢铁股份有限公司 | Laser welding machine |
| RU2624568C2 (en) * | 2015-10-02 | 2017-07-04 | Открытое акционерное общество "558 Авиационный ремонтный завод" | Method of laser material processing (versions) |
| CN108356413A (en) * | 2017-01-24 | 2018-08-03 | 大族激光科技产业集团股份有限公司 | A kind of laser welding head |
| CN106825919A (en) * | 2017-03-24 | 2017-06-13 | 燕山大学 | A kind of laser head lens protecting device |
| CN106825919B (en) * | 2017-03-24 | 2018-12-07 | 燕山大学 | A kind of laser head lens protecting device |
| CN110153554A (en) * | 2018-02-16 | 2019-08-23 | 发那科株式会社 | Laser Machining head |
| US10792768B2 (en) | 2018-02-16 | 2020-10-06 | Fanuc Corporation | Laser machining head with stain prevention for protection window |
| CN112276346A (en) * | 2020-10-22 | 2021-01-29 | 温州大学 | Automatic accurate focusing processing head of super high power laser cutting |
| CN112276346B (en) * | 2020-10-22 | 2021-11-09 | 温州大学 | Automatic accurate focusing processing head of super high power laser cutting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Multi-layer gas curtain laser cutting head Effective date of registration: 20150716 Granted publication date: 20131009 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Wuhan Meiman Technology Co., Ltd. Registration number: 2015990000565 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170419 Granted publication date: 20131009 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200419 Granted publication date: 20131009 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20180517 |