CN114473261A - Vacuum laser transmission lens protection system and method - Google Patents
Vacuum laser transmission lens protection system and method Download PDFInfo
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- CN114473261A CN114473261A CN202210186986.0A CN202210186986A CN114473261A CN 114473261 A CN114473261 A CN 114473261A CN 202210186986 A CN202210186986 A CN 202210186986A CN 114473261 A CN114473261 A CN 114473261A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 93
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- 239000000428 dust Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 125
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- 230000008569 process Effects 0.000 claims description 12
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- 239000003344 environmental pollutant Substances 0.000 description 2
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- 229910052786 argon Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/146—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing a liquid
Abstract
The invention discloses a vacuum laser transmission lens protection system and a method, the system comprises a laser transmission module, a sliding seal module and an anti-spattering module, the laser transmission module is used as a laser injection channel from the outside of the system and is fixed on the sliding seal module, the sliding seal module drives the laser transmission module to slide in a plane vertical to the laser incidence direction, the anti-spattering module is fixed at the bottom of the sliding seal module and is used for guiding airflow and avoiding welding spatter and smoke dust from polluting a transmission unit module, the laser transmission module comprises a seal lens barrel, a protection lens barrel and a replaceable lens barrel, the replaceable lens barrel is vertically fixed on the sliding seal module and comprises an air inlet, air is introduced into the replaceable lens barrel through an external air source to form positive pressure, the protection lens barrel is fixedly arranged at the top of the replaceable lens barrel, the seal lens barrel is fixedly arranged at the top of the protection lens barrel, the cooling water channel is arranged in the optical lens, so that the problems that the optical lens is easily heated and deformed, the coating film is damaged and the maintenance is inconvenient are solved.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a vacuum laser transmission lens protection system and a method.
Background
Specific welding requirements are provided for specific materials which are easy to oxidize and crack, such as welding depth, weld smoothness, weld pore inhibition, low-pressure/high-pressure sealing welding and the like, so that the requirements are also provided for a laser welding environment, a common glove box Ar welding environment, vacuum laser welding, high-pressure laser welding and the like are provided, then parts to be welded are placed in a welding cabin in a closed environment for welding, and Ar filling, vacuumizing or inflating pressurization treatment is carried out in the cabin. Because the welding process generates splashing and smoke dust is gathered in the closed cabin body, the penetration of laser can be blocked, the welding capability is reduced, the welding process is unstable, further, the optical lens is polluted and even damaged, and the welding process and the welding quality are seriously influenced.
The prior art has the following disadvantages: (1) the vacuum laser welding protective lens is arranged on the inner side wall of the vacuum box, so that the consistency and reliability of the quality of the vacuum laser welding are improved, but splashes still pass through the central hole and fall onto the lens, the lens is polluted and damaged, and the dispersed smoke dust in the cabin cannot be purified; (2) the method of adding the blowing nozzle and the air exhaust molecular pump is adopted to take away the smoke dust in the welding process of the vacuum environment, but the molecular pump is only used in the environment with higher vacuum degree, when larger air intake exists in the cabin, the continuous use can cause the overheating protection and even damage of the molecular pump, and when the air intake amount is smaller, the smoke dust and the splash in the welding process can not be completely exhausted; (3) the two sides of the transmission through hole are respectively provided with an air inlet through hole and an air exhaust through hole, but in a vacuum environment, because of no gas resistance, the splashing speed of pollutants is far higher than that of the atmospheric environment, and the influence of metal steam and welding smoke dust on the lens can not be completely eliminated.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides a vacuum laser transmission lens protection system and a method, the system comprises a laser transmission module, a sliding seal module and an anti-spattering module, the laser transmission module is fixedly arranged on the sliding seal module, the sliding seal module is used for driving the laser transmission module to slide in a plane vertical to the laser incidence direction, the anti-spattering module is fixed at the bottom of the sliding seal module and is used for guiding airflow and avoiding welding spatter and smoke pollution on a transmission unit module, the laser transmission module comprises a seal lens cone, a protection lens cone and a replaceable lens cone which are sequentially connected from top to bottom, the replaceable lens cone is vertically fixed on the sliding seal module, a cooling water channel is arranged on the seal lens cone and is used for cooling the inner lens of the sealed lens cone, the protection lens cone is internally provided with protection lenses and filter cotton and avoids welding smoke and metal steam from floating upwards, the replaceable lens barrel is communicated with the gas inlet, positive pressure is formed by introducing gas to inhibit metal steam and welding smoke, and the laser transmission system solves the problems that an optical lens is easy to damage and inconvenient to maintain.
To achieve the above object, according to one aspect of the present invention, there is provided a vacuum laser transmission lens protection system comprising:
the laser transmission module is fixed on the sliding sealing module and used as a channel for laser to be emitted into the vacuum chamber from the outside of the system, the sliding sealing module is used for driving the laser transmission module to slide in a plane vertical to the laser incidence direction, and the anti-spattering module is fixed at the bottom of the sliding sealing module and used for guiding airflow and inhibiting welding spatter and smoke pollution;
the laser transmission module comprises a sealing lens cone, a protective lens cone and a replaceable lens cone which are arranged along a light path, wherein through holes for laser to pass through are formed in the centers of the sealing lens cone, the protective lens cone and the replaceable lens cone, the replaceable lens cone is vertically fixed on the sliding sealing module, the replaceable lens cone comprises an air inlet, air is introduced through an external air source, positive pressure inhibition metal steam and welding smoke dust are formed in the replaceable lens cone, and a cooling water channel is arranged in the sealing lens cone and used for introducing circulating cooling water to cool lenses in the sealing lens cone.
Further, the protection lens cone comprises filter cotton, a protection lens and a lens drawer, the protection lens and the filter cotton are arranged in the protection lens drawer, the drawer is connected with the protection lens cone in a sliding mode, the protection lens and the filter cotton can be replaced when the protection lens drawer is pulled out, the filter cotton is arranged on the periphery side of the protection lens, and the protection lens and the filter cotton are used for preventing smoke dust from rising.
Further, the sealing lens barrel comprises a first sealing seat, a sealing lens, a second sealing seat, a second sealing ring, a cooling water interface and a cooling water channel, the first sealing seat is fixed on the second sealing seat, the sealing lens is arranged between the first sealing seat and the second sealing seat, the second sealing ring is respectively clamped between the sealing lens and the first sealing seat and between the sealing lens and the second sealing seat, and the second sealing ring seals the sealing lens;
the cooling water connectors are fixed on the second sealing seat, the cooling water channel is arranged in the second sealing seat and surrounds the through hole in the second sealing seat, the two cooling water connectors are respectively communicated with the two ends of the cooling water channel, and the cooling water connectors are communicated with an external water source.
Further, the replaceable lens barrel comprises an air inlet which is externally connected with an air source, and air is introduced into the replaceable lens barrel to be pressurized.
Further, the sliding seal module comprises a driving motor, a protective cover, a seal cover plate, a sliding guide rail, a sliding platform and a connecting support, the driving motor and the sliding guide rail are fixed on the seal cover plate, the sliding platform is connected with the sliding guide rail in a sliding mode, the driving motor is connected with the connecting support in a transmission mode, the connecting support is fixedly connected with the sliding platform, the driving motor drives the sliding platform to slide on the sliding guide rail, the replaceable lens barrel and the protective cover are fixed on the sliding platform, a through hole for laser to pass through is formed in the center of the sliding platform, and the through hole is concentric with the through hole in the laser transmission module.
Further, the sliding seal module includes a first seal ring, and the first seal ring is in contact with the replaceable lens barrel and the sliding platform, respectively.
Further, sealed apron is including the waist circle hole that is used for increasing logical light scope, the waist circle hole is the bar hole, when sliding platform removed, the through-hole on it was in waist circle hole length within range removes.
Furthermore, the anti-splashing module comprises a baffle bracket, a baffle and an air knife, the baffle bracket is fixed on the sealing cover plate, the baffle is fixed on the baffle bracket, and the air knife is positioned between the sealing cover plate and the baffle and is fixed on the baffle.
Furthermore, the baffle includes air knife regulation hole and laser exit hole, the laser exit hole with through-hole on the sliding platform is concentric, the air knife passes through the air knife regulation hole is fixed in on the baffle, the air knife regulation hole is the bar hole for adjust the air knife with the distance in laser exit hole.
According to another aspect of the present invention, there is provided a vacuum laser transmission lens protection method, comprising the steps of:
s100, fixing a part to be welded, fixing the part to be welded by using a clamp, and closing a door of a vacuum box to form a sealed environment;
s200, adjusting the lens cone, and selecting a replaceable lens cone with a required length to be installed according to the size and shape of the part, the welding focal length and the welding process so that the sealed lens and a light outlet of the welding head keep a required distance interval;
s300, adjusting the laser transmission module to be centered, and adjusting the positions of the sliding seal module and the laser welding head to enable the central through hole of the laser transmission module to be coaxial with the welding line;
s400, vacuumizing and starting an air knife, vacuumizing a vacuum box by using a vacuum pump, and starting the air knife to intake air to form a protective air curtain for the laser transmission module;
s500, an external water source and a protective gas source are connected, an external positive pressure gas source and a cooling water source are started, gas is introduced into the replaceable lens cone through the gas inlet, positive pressure is formed in the replaceable lens cone, cooling water is input into the cooling water channel through the cooling water interface, and the sealed lens is cooled;
s600, completing welding, starting laser until the welding is completed, closing the laser, the air knife and the vacuum pump, breaking vacuum to recover the pressure in the vacuum box to normal pressure, and then opening the cabin door to take out the welded parts.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. the invention provides a vacuum laser transmission lens protection system, which comprises a laser transmission module, a sliding seal module and an anti-splashing module, wherein the laser transmission module is fixedly arranged on the sliding seal module, the sliding seal module is used for driving the laser transmission module to slide in a plane vertical to the laser incidence direction, the anti-splashing module is fixed at the bottom of the sliding seal module and is used for guiding airflow and preventing welding splashing and smoke dust from polluting a transmission unit module, the laser transmission module comprises a seal lens barrel, a protection lens barrel and a replaceable lens barrel which are sequentially connected from top to bottom, the replaceable lens barrel is vertically fixed on the sliding seal module, a cooling water channel is arranged on the seal lens barrel and is used for cooling the inner lens of the lens, the service life and the service stability of the lens under the action of long-time high-power laser are prolonged, the protection lens barrel is internally provided with protection lenses and filter cotton and is prevented from welding smoke dust and metal steam from floating upwards, in protective glass and filter cotton all were fixed in the protective glass drawer, this drawer and protective lens cone sliding connection, but through taking out protective glass drawer quick replacement protective glass and filter cotton, and can replace the lens cone intercommunication and be equipped with the air inlet, through letting in gaseous formation malleation suppression metal steam and welding smoke and dust, this laser transmission system has solved the easy damage of optical glass and has maintained inconvenient problem.
2. The invention provides a vacuum laser transmission lens protection system.A laser transmission unit comprises a sealing lens barrel and a protection lens barrel, wherein the sealing lens barrel is internally provided with a sealing lens, the protection lens barrel is positioned below the sealing lens barrel, the protection lens barrel is internally provided with a detachable protection lens, the disassembly, the assembly and the maintenance are convenient, the protection lens is replaced, and a replaceable lens barrel is adopted for being suitable for different part heights, different laser focusing lengths and different welding defocusing amounts.
3. The invention provides a vacuum laser transmission lens protection system, wherein a sliding seal module comprises a sliding guide rail, a sliding platform, a seal cover plate, a driving motor and a shield, the sliding guide rail is fixed on the upper surface of the seal cover plate, the sliding platform is connected with the seal cover plate in a sliding manner, the driving motor is fixed on the seal cover plate and is used for driving the sliding platform to move on the sliding guide rail, the laser transmission module is fixedly arranged on the sliding platform, laser is enabled to carry out adaptive adjustment on the position of a welding seam through the driving motor, the shield is fixed on the sliding platform and moves along with the sliding platform, and external dust and foreign matters can be prevented from entering the guide rail to influence sliding.
4. The invention provides a vacuum laser transmission lens protection system, wherein a laser transmission module is fixed at the top of a sealing cover plate, a sliding sealing module is arranged on the sealing cover plate, and the laser transmission module is connected with a welding cabin body.
Drawings
FIG. 1 is a schematic diagram of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 2 is a front view of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 3 is a left side view of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 5 is an enlarged view B of a portion of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 6 is a first schematic structural diagram of a sliding seal module and a splash-proof module of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a sliding seal module and a splash-proof module of a vacuum laser transmission lens protection system according to an embodiment of the present invention;
FIG. 8 is a flow chart of a method for protecting vacuum laser transmission lens according to an embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-laser transmission module, 3-sliding sealing module, 5-anti-spatter module, 11-sealing lens cone, 12-protecting lens cone, 13-replaceable lens cone, 31-driving motor, 32-protective cover, 33-sealing cover plate, 34-first sealing ring, 35-sliding guide rail, 36-sliding platform, 37-connecting support, 38-sealing block and 51-baffle support, 52-baffle plate, 53-air knife, 111-first sealing seat, 112-sealing lens, 113-second sealing seat, 114-second sealing ring, 115-cooling water interface, 116-cooling water channel, 121-filter cotton, 122-protective lens, 131-air inlet, 331-waist circular hole, 521-air knife adjusting hole and 522-laser emitting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-8, the present invention provides a vacuum laser transmission lens protection system, which comprises a laser transmission module 1, a sliding seal module 3 and a splash-proof module 5, wherein the laser transmission module 1 is a channel through which laser is injected from the outside of the system and is fixedly mounted on the sliding seal module 3, the sliding seal module 3 is used for driving the laser transmission module 1 to slide in a plane perpendicular to the laser incidence direction so as to adapt to the position of a weld joint, the splash-proof module 5 is fixed at the bottom of the sliding seal module 3 and is used for guiding airflow and avoiding welding splash and smoke dust from polluting the transmission unit module, the joints of the three modules are all provided with sealing rings, further, the laser transmission module 1 comprises a sealing lens barrel 11, a protection lens barrel 12 and a replaceable lens barrel 13, which are sequentially butted from top to bottom and are vertically fixed on the sliding seal module 3 through the replaceable lens barrel 13, be provided with cooling water course 116 on the sealed lens cone 11, through letting in recirculated cooling water, prevent that the long-term high power of sealed lens cone 11 from shining and leading to its inner lens high temperature, and set up filter pulp 121 and protective glass 122 in the protective glass 12, protective glass 122 adopts detachable connection, the dismouting of being convenient for is maintained, can also avoid welding smoke and dust and metal steam come-up, protect sealed lens cone 11 inner structure, and can replace lens cone 13 and include air inlet 131, form the malleation environment through letting in gas, prevent the dust come-up, this malleation environment is the pressure between ordinary pressure and vacuum chamber internal negative pressure, the purpose is stroke guidance nature air current, avoid splashing and smoke and dust to raise, this laser transmission system has solved the easy damage of optical lens and has maintained inconvenient problem.
Further, as shown in fig. 1, 2 and 5, the laser transmission module 1 is an incident channel of external laser, the lower part of the laser transmission module is susceptible to floating by welding smoke, the upper part of the laser transmission module transmits high-power laser for a long time, and the inner lens structure is susceptible to high temperature damage, the laser transmission module 1 of the system adopts three sections, namely, the sealing lens barrel 11, the protection lens barrel 12 and the replaceable lens barrel 13 are sequentially connected, wherein the sealing lens barrel 11 comprises a first sealing seat 111, a sealing lens 112, a second sealing seat 113, a second sealing ring 114, a cooling water interface 115 and a cooling water channel 116, the first sealing seat 111 is fixedly connected to the second sealing seat 113, a space is left at the joint of the two sealing seats, the sealing lens 112 is installed in space, a through hole is arranged at the center of the two sealing seats for the laser to pass through, preferably, the first sealing seat 111 and the second sealing seat 113 are in contact with the side surface of the sealing lens 112 to limit the movement in the horizontal plane, the second sealing rings 114 are arranged on the upper and the lower surfaces of the sealing lens 112, the second sealing ring 114 is squeezed and respectively arranged between the sealing lens 112 and the first sealing seat 111 and the second sealing seat 113, the shape and size of the edge of the second sealing ring 114 are the same as the size of the edge of the sealing lens 112, and are used for sealing the top of the laser transmission module 1 and preventing impurities from entering, furthermore, two cooling water interfaces 115 are arranged and fixed on the second sealing seat 113, a cooling water channel 116 is arranged in the second sealing seat 113 and surrounds the through hole on the second sealing seat 113 in a U-shaped manner, the two cooling water interfaces 11 are respectively communicated with two ends of the U-shaped water channel, in the working process, the sealing lens 112 is influenced by long-term transmission high-energy laser, the sealing lens 112 is easily influenced by high temperature, the sealing lens 112 transfers heat to the cooling water channel 116 through contact with the second sealing seat 113, an external water source of one cooling water interface 11 introduces cooling water into the cooling water channel 116 to absorb heat, the other cooling water interface 11 guides out the cooling water, protection of the sealing lens 112 is achieved. Further, the protection lens barrel 12 includes a filter cotton 121 and a protection lens 122, the protection lens 122 is detachably mounted in the protection lens barrel 12, specifically, the protection lens 122 and the filter cotton 121 are both fixed in a protection lens drawer, the drawer is slidably connected to the protection lens barrel 12, the protection lens 122 and the filter cotton 121 can be replaced quickly by pulling out the protection lens drawer, so as to facilitate the protection lens 122 to be detached and replaced independently, the protection lens 122 is concentric with the central through hole of the protection lens barrel 12, the filter cotton 121 is fixedly mounted on the periphery of the protection lens 122, the protection lens 122 and the filter cotton 121 are used for preventing residual welding smoke and metal vapor from floating up to the lower edge of the sealing lens 112, and simultaneously maintaining the balance of the upper and lower pressure of the protection lens 122, preferably, the distance between the protection lens 122 and the sealing lens 112 should be as small as possible, so that the energy density of light spots irradiated by the laser beam on the two lenses is similar, meanwhile, the two lenses should be close to the laser focusing lens as much as possible, so that the energy density of the irradiated light spots is reduced, and the service lives of the two lenses are prolonged. Further, the replaceable lens barrel 13 is provided with an air inlet 131, which is externally connected with an air source, which may be argon, for forming air pressure in the replaceable lens barrel 13, because the top of the replaceable lens barrel 13 is provided with the protective lens 122 and the sealing lens 112, the air inlet can move downward from the channel of the replaceable lens barrel 13 after forming positive air pressure, the positive air pressure at this position is described as a vacuum chamber relative to the lower portion of the sliding seal module 3, during the actual welding process, the vacuum chamber is vacuumized by a vacuum pump, and the replaceable lens barrel 13 is communicated with the space in the vacuum chamber, so that a micro-positive pressure environment is formed, which can prevent metal steam and smoke from rising up and attaching to the protective lens 122 to damage the lens, preferably, the air inlet 131 is externally connected with an air source by using a flow controller to control the air inlet amount, which is convenient for flow regulation, and the replaceable lens barrel 13 can increase the distance from the sliding seal module 3 and the protective lens barrel to the focus of the laser beam, the actual welding position is near the laser beam focus, a large amount of welding spatter, high-concentration smoke dust, plasma and other pollutants are generated near the welding position, the distance is increased, the pollution of the welding spatter and the smoke dust to the modules can be effectively inhibited, and the purpose of adapting to the application of laser beams with different focal lengths can be achieved by installing replaceable lens barrels with different lengths, so that the length of the replaceable lens barrel 13 needs to be adjusted according to the actual requirements of the welding laser beam focusing focal length, the part size, the height, the welding process and the like.
Further, as shown in fig. 1-4 and fig. 7, the sliding seal module 3 includes a driving motor 31, a shield 32, a seal cover plate 33, a first seal ring 34, a sliding guide rail 35, a sliding platform 36, a connecting bracket 37 and a seal block 38, wherein the sliding seal module 3 is used for adjusting the horizontal position of the laser transmission module 1 to adapt to the welding seam track, the seal cover plate 33 seals the laser transmission module 1 and the sliding seal module 3 with the welding cabin, the driving motor 31 and the sliding guide rail 35 are fixed on the upper surface of the seal cover plate 33, the sliding platform 36 is slidably connected on the sliding guide rail 35, the driving motor 31 drives the connecting bracket 37 to move, the connecting bracket 37 is fixed with the sliding platform 36 to drive the sliding platform 36 to move on the sliding guide rail 35, preferably, the driving motor 31 drives the connecting bracket 37 to slide by using a ball screw structure, the sliding platform 36 is used for fixedly mounting the laser transmission module 1, specifically, the replaceable lens barrel 13 is fixed on the laser transmission module 1, the sealing cover plate 33 is provided with the sealing block 38, the first sealing ring 34 is tightly fixed between the sliding platform 36 and the sealing block 38 to form sealing and ensure a vacuum environment of the system, the protective cover 32 is fixedly mounted on the sliding platform 36 and used for preventing external dust from entering the sliding guide rail 35, further, the through hole formed in the center of the sealing cover plate 33 is a strip-shaped waist circular hole 331, the center of the sliding platform 36 is provided with a through hole which is concentric with the through hole in the laser transmission module 1, and when the sliding platform 36 moves, the through hole on the sliding platform moves within the length range of the waist circular hole 331. The welding seam area which can be adapted by the system is widened.
Further, as shown in fig. 1 to 4, the anti-spatter module 5 includes a plurality of baffle supports 51, a baffle 52 and an air knife 53, wherein the baffle supports 51 are vertically fixed on the bottom surface of the sealing cover plate 33, the baffle 52 is fixed on the baffle supports 51, the baffle 52 is an inverted L-shaped plate structure, and an air knife adjusting hole 521 and a laser emitting hole 522 are arranged in the horizontal area, i.e. in parallel with the sealing cover plate 33, wherein the laser emitting hole 522 is concentric with the sealing cover plate 33, the sealing lens barrel 11, the protection lens barrel 12 and the replaceable lens barrel 13 for laser to pass through, the baffle 52 is designed by the coanda effect, so that an air flow layer flows along the surface thereof, the spattering sparks, the metal vapor and the welding smoke move downwards by changing the moving direction of the air flow layer, the air knife 53 is arranged between the baffle 52 and the sealing cover plate 33 and fixed on the baffle 52, the air knife 53 is fixed on the baffle 52 near the laser emitting hole 522 through the air knife adjusting hole 521, the air knife adjusting hole 521 is a strip-shaped hole, the distance from the air knife 53 to the laser emitting hole 522 can be adjusted by changing the fixing position of the air knife 53, and dynamic pressure balance can be generated by the simultaneous working of a vacuum pump of the vacuum chamber and the air knife 53.
As shown in fig. 1 to 8, according to another aspect of the present invention, the present invention provides a vacuum laser transmission lens protection method, specifically including:
s100, fixing a part to be welded;
specifically, a part to be welded is fixed by using a clamp, the part is positioned below the anti-spattering module 5, and a cabin door of the vacuum box is closed to form a sealed environment;
s200, adjusting the lens cone;
specifically, according to the size and shape of the part, the welding focal length and the welding process, the replaceable lens barrel with the required length is selected, so that the sealing lens 112 and the light outlet of the welding head keep a reasonable distance interval
S300, adjusting the laser transmission module to be centered;
specifically, the positions of the sliding seal module 3 and the laser welding head are adjusted, so that the central through hole of the laser transmission module 1 and the welding line are in a coaxial position, and the centering process can be confirmed by using laser indication red light and a coaxial CCD (charge coupled device);
s400, vacuumizing and starting an air knife;
specifically, a vacuum pump is used for vacuumizing the vacuum box to a required pressure range, and the air knife 53 is started to intake air to form a protective air curtain for the laser transmission module 1;
s500, an external water source and a protective gas source are connected;
specifically, an external positive pressure gas source and a cooling water source in the laser projection module 1 are started, gas is introduced into the replaceable lens barrel 13 through the gas inlet 131 to form positive pressure, and cooling water is input into the cooling water channel 116 through the cooling water interface 115 to cool the sealed lens 112;
s600, completing welding;
specifically, laser is started until welding is completed, the laser, the air knife and the vacuum pump are closed, vacuum is broken, the pressure in the vacuum box is recovered to normal pressure, and then the cabin door is opened to take out the welded parts.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A vacuum laser transmission lens protection system, comprising:
the laser welding device comprises a laser transmission module (1), a sliding seal module (3) and a splash-proof module (5), wherein the laser transmission module (1) is fixed on the sliding seal module (3) and is used as a channel for laser to be emitted into a vacuum chamber from the outside of a system, the sliding seal module (3) is used for driving the laser transmission module (1) to slide in a plane vertical to the incidence direction of the laser, and the splash-proof module (5) is fixed at the bottom of the sliding seal module (3) and is used for guiding airflow and inhibiting welding splash and smoke pollution;
the laser transmission module (1) comprises a sealing lens cone (11), a protection lens cone (12) and a replaceable lens cone (13) which are arranged along a light path, through holes for laser to pass through are formed in the centers of the sealing lens cone (11), the replaceable lens cone (13) is vertically fixed on the sliding sealing module (3), the replaceable lens cone (13) comprises an air inlet (131), air is introduced through an external air source, positive pressure inhibition metal steam and welding smoke dust are formed in the replaceable lens cone (13), and a cooling water channel (116) is arranged in the sealing lens cone (11) and used for introducing circulating cooling water to cool the inner lenses of the sealed lens cone.
2. The vacuum laser transmission lens protection system according to claim 1, wherein the protection lens barrel (12) comprises a filter cotton (121), a protection lens (122) and a lens drawer, the protection lens (122) and the filter cotton (121) are disposed in the protection lens drawer, the drawer is slidably connected to the protection lens barrel (12), the protection lens (122) and the filter cotton (121) can be replaced by withdrawing the protection lens drawer, the filter cotton (121) is disposed on the periphery of the protection lens (122), and the protection lens (122) and the filter cotton (121) are used for preventing smoke from rising.
3. The vacuum laser transmission lens protection system according to claim 1, wherein the sealing barrel (11) comprises a first sealing seat (111), a sealing lens (112), a second sealing seat (113), a second sealing ring (114), a cooling water interface (115) and a cooling water channel (116), the first sealing seat (111) is fixed on the second sealing seat (113), the sealing lens (112) is arranged between the first sealing seat and the second sealing seat, the second sealing ring (114) is clamped between the sealing lens (112) and the first sealing seat (111) and the second sealing seat (113), and the second sealing ring (114) seals the sealing lens (112);
the cooling water connectors (115) are two and fixed to the second sealing seat (113), the cooling water channel (116) is arranged in the second sealing seat (113) and surrounds the through hole in the second sealing seat (113), the cooling water connectors (11) are communicated with the two ends of the cooling water channel (116) respectively, and the cooling water connectors (11) are communicated with an external water source.
4. The vacuum laser transmission lens protection system according to claim 1, wherein the replaceable lens barrel (13) comprises a gas inlet (131) externally connected with a gas source, and the gas is introduced into the replaceable lens barrel (13) at positive pressure.
5. The vacuum laser transmission lens protection system according to any one of claims 1 to 4, wherein the sliding seal module (3) comprises a driving motor (31), a shield (32), a sealing cover plate (33), a sliding guide rail (35), a sliding platform (36) and a connecting bracket (37), the driving motor (31) and the sliding guide rail (35) are fixed on the sealing cover plate (33), the sliding platform (36) is slidably connected with the sliding guide rail (35), the driving motor (31) is in transmission connection with the connecting bracket (37), the connecting bracket (37) is fixedly connected with the sliding platform (36), the driving motor (31) drives the sliding platform (36) to slide on the sliding guide rail (35), the replaceable lens barrel (13) and the shield (32) are fixed on the sliding platform (36), the center of the sliding platform (36) is provided with a through hole for laser to pass through, and the through hole is concentric with the through hole in the laser transmission module (1).
6. Vacuum laser transmission lens protection system according to claim 5, characterized in that the sliding seal module (3) comprises a first sealing ring (34), the first sealing ring (34) being in contact with the replaceable barrel (13) and the sliding platform (36), respectively.
7. The vacuum laser transmission lens protection system according to claim 5, wherein the sealing cover plate (33) comprises a waist circular hole (331) for increasing the light transmission range, the waist circular hole (331) is a strip-shaped hole, and when the sliding platform (36) moves, the through hole thereon moves within the length range of the waist circular hole (331).
8. The vacuum laser transmission lens protection system according to claim 5, wherein the anti-spatter module (5) comprises a baffle bracket (51), a baffle (52) and a wind knife (53), the baffle bracket (51) is fixed to the sealing cover plate (33), the baffle (52) is fixed to the baffle bracket (51), and the wind knife (53) is located between the sealing cover plate (33) and the baffle (52) and fixed to the baffle (52).
9. The vacuum laser transmission lens protection system as claimed in claim 8, wherein the baffle (52) comprises an air knife adjusting hole (521) and a laser emitting hole (522), the laser emitting hole (522) is concentric with the through hole on the sliding platform (36), the air knife (53) is fixed on the baffle (52) through the air knife adjusting hole (521), and the air knife adjusting hole (521) is a strip-shaped hole for adjusting the distance between the air knife (53) and the laser emitting hole (522).
10. A vacuum laser transmission lens protection method, which is realized by using a vacuum laser transmission lens protection system according to any one of claims 1 to 9, comprising the steps of:
s100, fixing a part to be welded, fixing the part to be welded by using a clamp, and closing a door of a vacuum box to form a sealed environment;
s200, adjusting the lens cone, and selecting a replaceable lens cone with a required length to be installed according to the size and shape of the part, the welding focal length and the welding process so that the sealed lens and a light outlet of the welding head keep a required distance interval;
s300, adjusting the laser transmission module to be centered, and adjusting the positions of the sliding seal module and the laser welding head to enable the central through hole of the laser transmission module to be coaxial with the welding line;
s400, vacuumizing and starting an air knife, vacuumizing a vacuum box by using a vacuum pump, and starting the air knife to intake air to form a protective air curtain for the laser transmission module;
s500, an external water source and a protective gas source are connected, an external positive pressure gas source and a cooling water source are started, gas is introduced into the replaceable lens cone through the gas inlet, positive pressure is formed in the replaceable lens cone, cooling water is input into the cooling water channel through the cooling water interface, and the sealed lens is cooled;
s600, completing welding, starting laser until the welding is completed, closing the laser, the air knife and the vacuum pump, breaking vacuum to recover the pressure in the vacuum box to normal pressure, and then opening the cabin door to take out the welded parts.
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| CN202210186986.0A CN114473261A (en) | 2022-02-28 | 2022-02-28 | Vacuum laser transmission lens protection system and method |
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| CN202210186986.0A CN114473261A (en) | 2022-02-28 | 2022-02-28 | Vacuum laser transmission lens protection system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117123920A (en) * | 2022-11-17 | 2023-11-28 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Partial vacuum sealing device |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151990A (en) * | 2011-04-01 | 2011-08-17 | 江苏大学 | Rotary laser head auxiliary gas transmission device for laser processing machine tool |
| CN102528283A (en) * | 2010-12-30 | 2012-07-04 | 杭州中科新松光电有限公司 | Welding head of optical fiber transmission laser |
| CN102615424A (en) * | 2011-12-31 | 2012-08-01 | 武汉金运激光股份有限公司 | Laser cutting head with focusing device and focal length determining method |
| CN204818431U (en) * | 2015-06-15 | 2015-12-02 | 北京万恒镭特机电设备有限公司 | Laser welding device who contains dust removal structure |
| CN204913068U (en) * | 2015-08-28 | 2015-12-30 | 成健 | Be applicable to totally enclosed laser three -dimensional cutting head of manipulator cage constrction |
| US20160062036A1 (en) * | 2014-08-26 | 2016-03-03 | Fanuc Corporation | Laser processing apparatus capable of switching fiber core |
| EP3098019A1 (en) * | 2015-05-27 | 2016-11-30 | Uwe Bergmann | Laser welding device with splash protection device |
| 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 |
| CN110744191A (en) * | 2019-10-22 | 2020-02-04 | 大族激光科技产业集团股份有限公司 | Welding device and welding method for inhibiting laser welding plume and controlling weld formation |
| CN111266756A (en) * | 2020-03-30 | 2020-06-12 | 中国工程物理研究院机械制造工艺研究所 | High-power vacuum laser welding transmission lens protection mechanism and welding system |
| CN111496376A (en) * | 2020-05-27 | 2020-08-07 | 岗春激光科技（江苏）有限公司 | Laser processing device |
| CN211804473U (en) * | 2020-03-30 | 2020-10-30 | 中国工程物理研究院机械制造工艺研究所 | High-power vacuum laser welding transmission lens protection device and welding system |
| CN112008242A (en) * | 2019-05-31 | 2020-12-01 | 大族激光科技产业集团股份有限公司 | Laser welding auxiliary structure, laser welding device and laser welding method |
| CN214161748U (en) * | 2020-09-18 | 2021-09-10 | 大族激光科技产业集团股份有限公司 | Shell structure and laser welding equipment |
| CN113977105A (en) * | 2021-11-18 | 2022-01-28 | 上海波刺自动化科技有限公司 | Device for monitoring sealing performance of laser cutting gas circuit in real time |
-
2022
- 2022-02-28 CN CN202210186986.0A patent/CN114473261A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528283A (en) * | 2010-12-30 | 2012-07-04 | 杭州中科新松光电有限公司 | Welding head of optical fiber transmission laser |
| CN102151990A (en) * | 2011-04-01 | 2011-08-17 | 江苏大学 | Rotary laser head auxiliary gas transmission device for laser processing machine tool |
| CN102615424A (en) * | 2011-12-31 | 2012-08-01 | 武汉金运激光股份有限公司 | Laser cutting head with focusing device and focal length determining method |
| US20160062036A1 (en) * | 2014-08-26 | 2016-03-03 | Fanuc Corporation | Laser processing apparatus capable of switching fiber core |
| EP3098019A1 (en) * | 2015-05-27 | 2016-11-30 | Uwe Bergmann | Laser welding device with splash protection device |
| CN204818431U (en) * | 2015-06-15 | 2015-12-02 | 北京万恒镭特机电设备有限公司 | Laser welding device who contains dust removal structure |
| CN204913068U (en) * | 2015-08-28 | 2015-12-30 | 成健 | Be applicable to totally enclosed laser three -dimensional cutting head of manipulator cage constrction |
| 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 |
| CN112008242A (en) * | 2019-05-31 | 2020-12-01 | 大族激光科技产业集团股份有限公司 | Laser welding auxiliary structure, laser welding device and laser welding method |
| CN110744191A (en) * | 2019-10-22 | 2020-02-04 | 大族激光科技产业集团股份有限公司 | Welding device and welding method for inhibiting laser welding plume and controlling weld formation |
| CN111266756A (en) * | 2020-03-30 | 2020-06-12 | 中国工程物理研究院机械制造工艺研究所 | High-power vacuum laser welding transmission lens protection mechanism and welding system |
| CN211804473U (en) * | 2020-03-30 | 2020-10-30 | 中国工程物理研究院机械制造工艺研究所 | High-power vacuum laser welding transmission lens protection device and welding system |
| CN111496376A (en) * | 2020-05-27 | 2020-08-07 | 岗春激光科技（江苏）有限公司 | Laser processing device |
| CN214161748U (en) * | 2020-09-18 | 2021-09-10 | 大族激光科技产业集团股份有限公司 | Shell structure and laser welding equipment |
| CN113977105A (en) * | 2021-11-18 | 2022-01-28 | 上海波刺自动化科技有限公司 | Device for monitoring sealing performance of laser cutting gas circuit in real time |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117123920A (en) * | 2022-11-17 | 2023-11-28 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Partial vacuum sealing device |
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