CN103212803B - Containing the laser cutting machine of preposition spray water guide structure - Google Patents
Containing the laser cutting machine of preposition spray water guide structure Download PDFInfo
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- CN103212803B CN103212803B CN201210015841.0A CN201210015841A CN103212803B CN 103212803 B CN103212803 B CN 103212803B CN 201210015841 A CN201210015841 A CN 201210015841A CN 103212803 B CN103212803 B CN 103212803B
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Abstract
The present invention relates to a kind of laser cutting machine containing preposition spray structure and coaxial injector, mainly solve in the process of laser cutting machined microtubules diameter pipes in prior art, the heat produced causes fire damage to part, the problem of chip not easy-clear, the present invention is by adopting a kind of laser cutting machine, comprise coaxial injector and preposition water guiding system, the motor (1) of preposition water guiding system is by shaft coupling (2), lining (3) is connected with aqueduct (4), lining (3) one end is positioned at shaft coupling (2), the other end and aqueduct (4) are tightly connected, aqueduct (4) has water inlet (6) near lining (3) one end, water inlet (6) is connected with automatic water supply system (5) sealed bearing (7), the external diameter of aqueduct (4) is less than the internal diameter of tubing to be processed (8), aqueduct (4) inserts the technical scheme of the inside of tubing to be processed away from lining (3) end, solve this problem preferably, can be used for laser to wet in the industrial production of cutting processing.
Description
Technical field
The present invention relates to a kind of laser containing preposition spray water guide structure to wet cutting machine, have and relate to a kind of laser cutting machine with preposition spray water distributor and coaxial injector.
Background technology
Laser cutting technique, owing to having minimizing process time, cuts down finished cost, and improves the advantage of workpiece quality, is widely used in the processing of metal and nonmetallic materials, and Laser cutting also has the trend replacing conventional tool gradually.
Laser Micro-Machining, because working (machining) efficiency is high, cutting residue is few, the features such as the automation of process are processed, easily realized in noncontact, thus becomes the main method of thin-wall pipes processing.The laser cutting of thin-wall pipes is moved along line of cut on tubing by overlapped laser pulse point, inputs the auxiliary fusing cutting of hyperbaric oxygen simultaneously.The material molten gasification of Laser Focusing point place, slag is blown out by gas, and metal pipe-wall forms cutting track.Originally melting gas and slag are outwards launched, but finally, most steam all becomes chip, are dispersed in ablation pattern surface surrounding and cutting.The formation of chip destroys outward appearance and the performance of part.It also reduces ablation efficiency, due to the front chip once stayed may block next time scanning time laser beam propagation path.
When the tubing of laser cutting Large Diameter Pipeline, the overheated impact brought in zonule is little.But need the tubing cutting small caliber in a lot of application, (caliber is generally less than 5mm) can produce heat fast in laser processing procedure, the thermal diffusion of part can produce fire damage, no matter be heat affected area, melt region, double teeming, or dregs, all change micro-structural.Part heat-affected zone compromises the integrality of part, and then significantly reduces processing output.
General laser micro process have dry cut and wet cut two kinds of techniques, dry cutting process is blown by assist gas in laser and the material zone of action, for removing the disintegrating slag of otch and cooling laser active region.Wet cutting has superiority usually in finding cutting, because little metal parts can produce heat fast in cutting process, wet cutting has important function in maintenance heat affected area temperature is minimum, especially because the special temperature caused that spreads increases, wet cutting can help to maintain heat management best in workpiece.Simultaneously because the material after fusing and condensation still remains in otch and cutting surfaces.In order to eliminate them, the secondary air of limited air pressure is generated usually near laser beam.But this air-flow is very ineffective, because only there is a fraction of gas penetration to enter otch.Except the chip near otch, also have fusing particle and the deposition of evaporating materials on surface.And introduce water under high pressure to cut point, the very thin moisture film of one deck can be produced at surface of the work.The particle dropped on film cools very soon and there is no the surface that method is bonded in workpiece.The specific implementation of water guide mode: compared to dry cutting process, water guide link that wet cutting process is many, needs to import cooling water to cut point position.
CN202006338U discloses a kind of high power laser light cutting machine and light-conducting system field; especially water-cooled laser cutting head; it comprises water-cooled focus lamp inner core, water-cooled focus lamp overcoat; cooling water is connected with between water-cooled focus lamp inner core, water-cooled focus lamp overcoat; condensing lens and screening glass thereof are arranged in water-cooled focus lamp inner core; it is biconial air blowing cover small in ends, broad in the middle that the laser output of described water-cooled focus lamp inner core is provided with longitudinal cross-section, and the upper tapering outer surface of cover of blowing is provided with inlet suction port.
CN1827282 discloses a kind of digital-control laser cutting head for CO2 numerical control laser cutter and manufacture method thereof.Digital-control laser cutting head comprises water-cooled assembly, and the upper and lower part of described water-cooled assembly is all integral annular cooling water channel structures, and its annular cooling water groove is disposable machine uniformly machine-shaping; The loss of digital-control laser cutting head air pressure and light energy is in use little, focusing effect good, good airproof performance, cut sheet metal thickness are larger, availability ratio of the armor plate is high to adopt above technology to make, and has high strength, high resistance to pressure and high-termal conductivity.
Laser cutting machine water guiding system of the prior art is for water unstable, and structure is not compact, and whole equipment takes up space greatly, is also unfavorable for the control of equipment cost, and also no report does not control prior art automatically, supply water stable automatic water supply system.
Summary of the invention
Technical problem to be solved by this invention is in the process of Laser Processing microtubules diameter pipes, the heat produced causes fire damage to part, the problem of chip not easy-clear, a kind of laser cutting machine is provided, this laser cutting machine is adopted to have the fire damage caused part little, the advantage of the chip easy-clear simultaneously produced in cutting process.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of laser cutting machine, and comprise coaxial injector 9, fixture 10, seal plug 11 and preposition spray water distributor, preposition spray water distributor contains automatic water supply system; Described preposition spray water distributor, comprise motor 1, shaft coupling 2, lining 3, aqueduct 4, automatic water supply system 5 and water inlet 1, motor 1 is connected with aqueduct 4 by shaft coupling 2, lining 3, lining 3 one end is positioned at shaft coupling 2, the other end and aqueduct 4 are tightly connected, aqueduct 4 has water inlet 1 near lining 3 one end, water inlet 1 is connected with the sealed bearing 7 of automatic water supply system 5, the external diameter of aqueduct 4 is less than the internal diameter of tubing 8 to be processed, and aqueduct 4 gos deep into the inside of tubing to be processed away from lining 3 end.
In technique scheme, preferred technical scheme aqueduct has the water jet of long trough, water under high pressure sprays from water jet after entering aqueduct.In tubing cutting process to be processed, aqueduct 4 does and the reciprocal rotation of tubing 8 to be processed under the drive of motor 1.
Automatic water supply system 5 comprises water tank, liquid level sensor, water inlet two, magnetic valve, delivery port, centrifugal pump, water pipe and liquid level line; Liquid level sensor is positioned at the liquid level line position, middle and upper part of water tank, and one end of water inlet two is connected to water tank upper, and the other end is connected with water source by magnetic valve; One end of water pipe is positioned at bottom or the side of water tank, and is positioned at below liquid level line; The other end of water pipe is connected with centrifugal pump, and one end of delivery port is positioned on centrifugal pump, and the other end is connected with the aqueduct of laser cutting machine.
In technique scheme, preferred technical scheme water tank is made up of transparent material; Preferred technical scheme liquid level sensor, magnetic valve, centrifugal pump are controlled by Programmable Logic Controller (PLC).
Coaxial injector, comprise three parts: top is divided into the link block I be connected with laser generator, middle part is transitional module II, bottom is nozzle module III, upper connecting base 001 inside is provided with focus lamp 010, and link block I is provided with upper connecting base 001, and the external screw thread of upper connecting base 001 upper end is connected with laser generator, the screw thread of lower end is connected with transition adapter sleeve 004, and installs silicagel pad 002 and annular knurl adjustment screw 003 at upper connecting base 001 and the joint of transition adapter sleeve 004; Transitional module II is provided with transition adapter sleeve 004, and transition adapter sleeve 004 is provided with auxiliary gas entry 005; Nozzle module III is made up of nozzle inner core 009 and the outer core 007 of nozzle, and nozzle inner core 009 and the outer core 007 of nozzle have screw thread, and the two is connected by threaded engagement, and is sealed by O-ring seals 006 in junction; High-pressure water inlet 008 is arranged on the sidewall of the outer core 007 of nozzle, and opening direction is vertical with nozzle direction.
In above-mentioned coaxial injector technical scheme, preferred technical scheme is auxiliary gas entry 005 for spraying assist gas to cutting area, and the assist gas passed into is coaxial with laser beam.Preferred technical scheme is from after the laser of laser generator outgoing is focused on by the focus lamp 010 be arranged on upper connecting base 001, be transmitted on nozzle inner core 009, cooling water, by the high-pressure water inlet 008 on the outer core 007 of nozzle, enters in the passage of the outer core of nozzle.Preferred technical scheme is that the outer core 007 of nozzle inner core 009 and nozzle adopts red copper material to make.Preferred technical scheme is that nozzle inner core 009 is longer than the outer core 007 of nozzle.Preferred technical scheme for there to be external screw thread on nozzle inner core 009, and the outer core 007 of nozzle has internal thread, and the two is connected by threaded engagement.To be water under high pressure be preferred technical scheme carries out the pure water after the pure water of degassed process or secondary filter.
In technique scheme, preferred technical scheme coaxial water fluidic device also comprises work top and places tubing 8 to be processed, and tubing 8 to be processed is positioned at below nozzle.Preferred technical scheme laser generator is optical-fiber laser generator.Preferred technical scheme nozzle is annular, and water jet is column.Focus lamp focusing differential head is used for level or vertical adjusting focus lamp 010.
In the laser nozzle of the coaxial-type that the present invention proposes:
The external screw thread that upper connecting base upper end is attacked is connected with laser generator, and the screw thread of lower end is connected with transition adapter sleeve, installs silicagel pad at the joint of upper connecting base and transition adapter sleeve, plays buffering and fine setting effect.Annular knurl adjustment screw is used for the axiality of manual adjustments nozzle module and laser generator.Pass into high pressure assist gas at auxiliary gas entry, after the laser of laser generator outgoing is focused on by the focus lamp be arranged on upper connecting base, be transmitted into nozzle inner core.Therefore nozzle inner core is the shared pathway of high pressure assist gas and laser beam.Cooling water, by the high-pressure water inlet on the outer core of nozzle, enters in the passage of the outer core of nozzle.Sealed by O-ring seals in the junction of nozzle inner core and outer core, prevent current from entering nozzle inner core.High-pressure water inlet is arranged on the sidewall of the outer core of nozzle, and the direction of through hole is vertical with nozzle core.Controlling water flow pressure makes working water jet can not become eddy current in water capacity.Auxiliary gas entry is used for spraying assist gas to cutting area, and the assist gas passed into is coaxial with laser beam.If when air-flow and light beam disalignment, then easily produce a large amount of splashing when cutting.
Because red copper has excellent Dao electricity ﹑ Dao Re ﹑ ductility and corrosion resistance, therefore inside and outside nozzle, core adopts red copper material to make.Nozzle inner core hole wall is smooth, can ensure the smooth and easy of air-flow, avoids affecting kerf quality because there is turbulent flow.Again because the heat conductivility of red copper material high, inside and outside nozzle, the annular seal space of core is filled with the temperature that high-pressure cooling water can reduce nozzle inner core, reduces the consume of nozzle inner core.Nozzle inner core is easy consumable accessories, and the mode that nozzle module adopts inside and outside core to coordinate makes, once nozzle inner core damages, as long as change nozzle inner core, does not need whole nozzle exchange.The current meeting absorption portion laser when Laser Processing, the distance of laser in current is longer, and laser energy consume is more.Therefore be reduce current as far as possible to the absorption of laser in the present invention, nozzle inner core core distance outer than nozzle in design, the distance making laser walk in water is as far as possible short.In order to reduce the energy attenuation of laser in the intrafascicular propagation of water, in the present invention, use the pure water after degassed or secondary filter.
The present invention adopts state-of-the-art optical fiber laser, obtains sufficiently high peak power.Water under high pressure feed unit.For providing water under high pressure.Adopt circular nozzle, water jet is substantially in column.The chip that protective glass 9 avoids melting to splash in process and current are on the impact of focus lamp and laser generator.
The principle being applicable to the coaxial water fluidic device of thin-wall pipes Laser Micro-Machining that the present invention proposes is: the cooling water that introducing is coaxial with laser beam in laser processing procedure is auxiliary to be cut, adopt by after laser beam focus in the scope that water column remains stable, workpiece is dipped in and wherein workpiece to be processed is processed, the heat that laser energy buildup and conduction are produced is walked by water-band, and the heat waste of laser when cutting thin-wall pipes can be avoided to injure scorching hot.The current of coaxial incidence effectively can reduce heat affected area, reduce thermal stress and produce to suppress surface of the work crackle.In workpiece process, introduce the fracture strength that coaxial water jet can improve material simultaneously better can ensure follow-up processing and the service life of device.The high temperature of laser makes water temperature rise simultaneously, and the bubble of generation and the activity of heating liquid contribute to the discharge of slag, improves crudy.Washing away of current makes the material of great majority fusing be taken away by water jet, only has small part chip to stay.Can produce the very thin moisture film of one deck at surface of the work, the particle dropped on film cools very soon and there is no the surface that method is bonded in workpiece.High-pressure water jet can replace additional high pressure gas, cools and take away the slag and chip that produce in process to workpiece.
Compared to dry cutting process, water guide link that wet cutting process is many, needs to import cooling water to cut point position.In the preposition spray water distributor that the present invention proposes: aqueduct adopts the tubing thinner than pipe internal diameter, water delivered to cut end, it has the water jet of long trough, can spray after water under high pressure injects aqueduct from water jet.In tubing cutting process, pipe material clamp drives tubing High Rotation Speed, and aqueduct does with tubing reciprocal rotation under the drive of motor, and water jet rotates, thus can realize the cooling of whole tubing.Be matched in clearance between aqueduct and tubing, prevent aqueduct wearing and tearing tubing in relative movement.Lining is arranged on aqueduct end, protects aqueduct first, if when second cutting microtubules diameter pipes, the external diameter of aqueduct is less, aqueduct end mounting bush, is conveniently connected with shaft coupling.
The output shaft of motor is connected with shaft coupling, and the other end of shaft coupling is connected with the lining installing aqueduct, thus the rotary motion of motor output shaft is delivered to aqueduct.Water tank is made by transparent material, can observe the change of water level at any time.In water tank, be provided with liquid level sensor, preset the numerical value of liquid level sensor, as long as water level is lower than the registration of liquid level sensor, liquid level sensor sends signal, and magnetic valve is opened, water filling in water tank.Magnetic valve is in normally closed state.Centrifugal pump has water inlet two and delivery port, and water inlet two is connected with water tank by water pipe, and become water under high pressure through the current of centrifugal pump and penetrated by delivery port, delivery port is connected with aqueduct.Whole process is controlled by PLC, supplies water stable.
In laser cutting, the cooling water effect of importing: 1. cool tubing when laser cutting.2. remove chip.Motlten metal and metallic vapour are in the deposition of tube surfaces, and the cooling water of importing can produce the very thin moisture film of one deck at surface of the work, and the particle dropped on film cools very soon and there is no the surface that method is bonded in workpiece.The additional high pressure gas coaxial with laser beam blows out cutting area the chip cooled, and chip is pooled to sewage filter device together in company with current and filters.Centrifugal pump in the present invention pressurizes to cooling water, can play the effect of removing chip better.
What the present invention proposed be applicable to thin-wall pipes wets and cuts the laser cutting machine with preposition water distributor of processing, introduces water under high pressure and cools fast, prevent the excessive calcination of tubing, reduce the pollution in cutting process in the process for Laser Processing microtubules diameter pipes.Overcome the drawback that rearmounted water guide exists simultaneously.Water supply installation used, overcome the existing water system that supplies water for water unstable, structure is not compact, and whole equipment takes up space greatly, the drawback that equipment cost is high, having supplies water stablizes, compact conformation, whole equipment takes up space little, the advantage that equipment cost is low, achieves good technique effect.
Accompanying drawing explanation
Fig. 1 is laser cutting machine structure schematic diagram.
Fig. 2 is the wet laser cutting machine supply equipment schematic diagram cutting processing.
Fig. 3 is coaxial injector structural representation.
In Fig. 1,1 is motor, and 2 is shaft coupling, and 3 is lining, and 4 is aqueduct, and 5 is automatic water supply system, and 6 is water inlet one, and 7 is sealed bearing, and 8 is tubing to be processed, and 9 is coaxial water fluidic device, and 10 is fixture, and 11 is seal plug.I is processing district; II is work area to be added.
In Fig. 2,01 is water tank, 02 liquid level sensor, and 03 water inlet two, 04 is magnetic valve, 05 be delivery port, 06 for centrifugal pump, 07 is water pipe, and 08 is liquid level line.
In Fig. 3, I is link block; II is excessive module; III nozzle module.
001 is upper connecting base, and 002 is silicagel pad, and 003 is annular knurl adjustment screw, and 004 is transition adapter sleeve, and 005 is auxiliary gas entry, and 006 is O-ring seals, and 007 is the outer core of nozzle, and 008 is high-pressure water inlet, and 009 is nozzle inner core, and 010 is focus lamp.
By embodiment, the invention will be further elaborated, but be not limited only to the present embodiment.
Specific embodiment
[embodiment 1]
This example provides a kind of laser cutting machine, and as shown in Figure 1, comprise coaxial water fluidic device 9, fixture 10, seal plug 11 and preposition spray water distributor, preposition spray water distributor contains automatic water supply system; Described preposition spray water distributor, comprise motor 1, shaft coupling 2, lining 3, aqueduct 4, automatic water supply system 5 and water inlet 1, motor 1 is connected with aqueduct 4 by shaft coupling 2, lining 3, lining 3 one end is positioned at shaft coupling 2, the other end and aqueduct 4 are tightly connected, aqueduct 4 has water inlet 1 near lining 3 one end, water inlet 1 is connected with automatic water supply system 5 sealed bearing 7, the external diameter of aqueduct 4 is less than the internal diameter of tubing 8 to be processed, and aqueduct 4 gos deep into the inside of tubing to be processed away from lining 3 end.
Described automatic water supply device, as shown in Figure 2, comprises water tank 01, liquid level sensor 02, water inlet 23, magnetic valve 04, delivery port 05, centrifugal pump 06, water pipe 07 and liquid level line 08; Liquid level sensor 02 is positioned at middle and upper part liquid level line 08 position of water tank 01, and one end of water inlet 23 is connected to water tank 01 top, and the other end is connected with water source by magnetic valve 04; One end of water pipe 07 is positioned at bottom or the side of water tank 01, and is positioned at liquid level line less than 08; The other end of water pipe 07 is connected with centrifugal pump 06, and one end of delivery port 05 is positioned on centrifugal pump 06, and the other end is connected with the aqueduct of laser cutting machine.Water tank 01 is made up of transparent material, and liquid level sensor, magnetic valve 04, centrifugal pump 06 are by Controlled by Programmable Controller.
This coaxial-type water jet laser nozzle, utilizes the cooling water flow of coaxial-type to cool nozzle, can reduce the consume of nozzle in laser processing procedure, simultaneously that cooling water is simple, is incorporated into cut point easily.
Coaxial injector, as shown in Figure 3, comprise three parts: top is divided into the link block I be connected with laser generator, middle part is transitional module II, bottom is nozzle module III, upper connecting base 001 inside is provided with focus lamp 010, link block I is provided with upper connecting base 001, the external screw thread of upper connecting base 001 upper end is connected with laser generator, the screw thread of lower end is connected with transition adapter sleeve 004, and installs silicagel pad 002 and annular knurl adjustment screw 003 at upper connecting base 001 and the joint of transition adapter sleeve 004; Transitional module II is provided with transition adapter sleeve 004, and transition adapter sleeve 004 is provided with auxiliary gas entry 005; Nozzle module III is made up of nozzle inner core 009 and the outer core 007 of nozzle, and nozzle inner core 009 and the outer core 007 of nozzle have screw thread, and the two is connected by threaded engagement, and is sealed by O-ring seals 006 in junction; High-pressure water inlet 008 is arranged on the sidewall of the outer core 007 of nozzle, and opening direction is vertical with nozzle direction.
Auxiliary gas entry 005 is for spraying assist gas to cutting area, the assist gas passed into is coaxial with laser beam, after the laser of laser generator outgoing is focused on by the focus lamp 010 be arranged on upper connecting base 001, be transmitted on nozzle inner core 009, cooling water is by the high-pressure water inlet 008 on the outer core 007 of nozzle, enter in the passage of the outer core of nozzle, nozzle inner core 009 and the outer core 007 of nozzle adopt red copper material to make, nozzle inner core 009 is longer than the outer core 007 of nozzle, nozzle inner core 009 there is external screw thread, the outer core 007 of nozzle there is internal thread, the two is connected by threaded engagement, water under high pressure is the pure water carrying out degassed process.
Adopt this device to supply water to laser cutting machine, preset the numerical value of liquid level sensor, as long as water level is lower than the registration of liquid level sensor, liquid level sensor sends signal, and magnetic valve is opened, water filling in water tank.Magnetic valve is in normally closed state.
What this embodiment provided be applicable to, and thin-wall pipes wets cuts the preposition water distributor of processing, introduce water under high pressure in process for Laser Processing microtubules diameter pipes to cool fast, prevent the excessive calcination of tubing, reduce the pollution in cutting process, overcome the drawback that rearmounted water guide exists simultaneously.The wet automatic water supply device of cutting processing of laser used has and supplies water stable, and compact conformation, equipment takes up space little, the advantage that equipment cost is low.
Claims (10)
1. contain a laser cutting machine for preposition spray structure and coaxial injector, comprise coaxial injector (9), fixture (10), seal plug (11) and preposition spray water distributor, preposition spray water distributor contains automatic water supply system, described preposition spray water distributor, comprise motor (1), shaft coupling (2), lining (3), aqueduct (4), automatic water supply system (5) and water inlet one (6), motor (1) is by shaft coupling (2), lining (3) is connected with aqueduct (4), lining (3) one end is positioned at shaft coupling (2), the other end and aqueduct (4) are tightly connected, aqueduct (4) has water inlet one (6) near lining (3) one end, water inlet one (6) is connected with automatic water supply system (5) by sealed bearing (7), the external diameter of aqueduct (4) is less than the internal diameter of tubing to be processed (8), aqueduct (4) inserts the inside of tubing to be processed away from lining (3) end.
2. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 1, it is characterized in that water jet aqueduct (4) having long trough, water under high pressure sprays from water jet after entering aqueduct.
3. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 1, it is characterized in that in tubing cutting process to be processed, aqueduct (4) does and tubing to be processed (8) reciprocal rotation under the drive of motor (1).
4. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 1, is characterized in that automatic water supply system comprises water tank, liquid level sensor, water inlet two, magnetic valve, delivery port, centrifugal pump, water pipe and liquid level line; Liquid level sensor is positioned at the liquid level line position, middle and upper part of water tank, and one end of water inlet two is connected to water tank upper, and the other end is connected with water source by magnetic valve; One end of water pipe is positioned at bottom or the side of water tank, and is positioned at below liquid level line; The other end of water pipe is connected with centrifugal pump, and one end of delivery port is positioned on centrifugal pump, and the other end is connected with the aqueduct of the preposition spray water distributor of laser cutting machine, and liquid level sensor, magnetic valve, centrifugal pump are by Controlled by Programmable Controller.
5. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 1, it is characterized in that described coaxial injector comprises three parts: top is divided into the link block I be connected with laser generator, middle part is transitional module II, bottom is nozzle module III, link block I is provided with upper connecting base (001), upper connecting base (001) inside is provided with focus lamp (010), the external screw thread of upper connecting base (001) upper end is connected with laser generator, the screw thread of lower end is connected with transition adapter sleeve (004), and at upper connecting base (001) and the joint of transition adapter sleeve (004), silicagel pad (002) and annular knurl adjustment screw (003) are installed, transitional module II is provided with transition adapter sleeve (004), and transition adapter sleeve (004) is provided with auxiliary gas entry (005), nozzle module III is made up of nozzle inner core (009) and the outer core (007) of nozzle, and nozzle inner core (009) and the outer core (007) of nozzle have screw thread, and the two is connected by threaded engagement, and is provided with O-ring seals (006) sealing in junction, high-pressure water inlet (008) is arranged on the sidewall of the outer core (007) of nozzle, and opening direction is vertical with nozzle direction.
6. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 5, is characterized in that laser generator is optical-fiber laser generator; Nozzle is annular, and water jet is column; Focus lamp focusing differential head is used for level or vertical adjusting focus lamp (010).
7. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 5, it is characterized in that from after the laser of laser generator outgoing is focused on by the focus lamp (010) be arranged on upper connecting base (001), be transmitted on nozzle inner core (009), cooling water, by the high-pressure water inlet (008) on the outer core (007) of nozzle, enters in the passage of the outer core (007) of nozzle.
8. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 5, it is characterized in that nozzle inner core (009) and the outer core (007) of nozzle adopt red copper material to make, nozzle inner core (009) there is external screw thread, the outer core (007) of nozzle has internal thread, and the two is connected by threaded engagement.
9. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 5, is characterized in that nozzle inner core (009) is longer than the outer core (007) of nozzle.
10. the laser cutting machine containing preposition spray structure and coaxial injector according to claim 5, is characterized in that water under high pressure is the pure water after carrying out the pure water of degassed process or secondary filter.
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| CN105414780B (en) * | 2015-12-29 | 2017-09-12 | 苏州润昇精密机械有限公司 | Cooling system for laser-beam welding machine |
| CN106514020A (en) * | 2016-12-09 | 2017-03-22 | 重庆寅悦恒工贸有限公司 | Cooling device for automobile part cutting |
| CN110834149B (en) * | 2018-08-16 | 2022-06-28 | 中国科学院上海光学精密机械研究所 | Laser welding device with cooling system and method |
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| KR20100071577A (en) * | 2008-12-19 | 2010-06-29 | 재단법인 포항산업과학연구원 | Apparatus for welding a pipe and method of welding a pipe by using the same |
| CN202607087U (en) * | 2012-01-19 | 2012-12-19 | 昆山思拓机器有限公司 | Laser cutting machine with preposed spraying water guide structure |
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| CN103212803A (en) | 2013-07-24 |
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