83 results about "Laser channel" patented technology

The present invention discloses a laser head air path structure for improving cutting quality, comprising: a laser, a laser channel, a focusing mechanism, an air supply unit and a nozzle device; wherein, the laser channel is vertically arranged in the middle of the laser, the focusing mechanism is horizontally installed in the laser channel inside the laser, the nozzle device is vertically installed below the laser, and an independent first air channel and a second air channel are provided in the nozzle device, and the first air channel and the second air channel respectively spray protective gas to the laser cutting point from corresponding blowing points at the same time; an air supply unit is installed between the laser and the nozzle device, and the air supply unit is used to supply protective gas to the first air channel and the second air channel in the nozzle device; the spray direction of the first air channel is directly facing the cutting focus position of the laser; the spray direction of the second air channel is the peripheral position of the cutting focus circle of the laser.

The invention discloses an automatic driving laser radar simulation method for high-fidelity material modeling, and the method comprises the steps: carrying out the high-fidelity modeling of a complete physical process of a single laser channel, and designing a complete technical chain from laser beam modeling, material reflectivity modeling, light path modeling to post-processing. In laser beam modeling, energy space distribution is accurately depicted by introducing an angle attenuation conical beam model; in material reflectivity modeling, a bidirectional reflection distribution function system covering Lambert body, specular reflection, transmission, retroreflection and general materials is established; in light path modeling, traditional single reflection hypothesis is broken through, time-resolved Monte Carlo path tracking and kernel density estimation are adopted, simulation of multi-path reflection and transmission effects is achieved, traditional model bottlenecks are broken through, complex optical phenomena are simulated, the generation mode has expandability and controllability, rare key scenes are efficiently synthesized, and the method is suitable for large-scale popularization and application. And the method has wide field extension potential and high technical universality.

The invention provides an automatic mechanical arm device, and belongs to the technical field of mechanical arms, the automatic mechanical arm device comprises a multi-axis servo mechanical arm and a laser welding head, the laser welding head is connected with a gas generator, the laser welding head is connected with an air injection seat and a laser channel cylinder, the air injection seat is connected with an air cylinder, and the automatic mechanical arm device further comprises a pollution discharge assembly, the pollution discharge assembly is used for removing smoke dust attachments after welding in the air outlet cylinder; the throttling assembly is used for circularly absorbing part of gas; the device has the beneficial effects that active cleaning of smoke dust attachments on the inner wall of the air outlet cylinder is achieved through the pollution discharge assembly, external washing equipment is not needed, a traditional maintenance means is avoided, the stability of the drift diameter of an air path is maintained, it is ensured that protective gas is output uniformly, the welding accuracy and efficiency are improved, and the throttling assembly restrains diffusion of the protective gas through an umbrella-shaped throttling cover; and meanwhile, unpolluted redundant protective gas is recycled, and the consumption of the protective gas is reduced.

The utility model relates to the technical field of laser welding, in particular to a welding head module and a laser welding device. The welding head module comprises a welding head fixing seat, a welding nozzle assembly, a wire clamp assembly and a cutter assembly, and the welding head fixing seat is used for being connected with a driving assembly of the laser welding device; the welding nozzle assembly is arranged on the welding head fixing base and comprises a welding nozzle, and a laser channel is formed in the welding nozzle and used for allowing a laser beam to penetrate through so that a metal wire located on the light emitting side of the welding nozzle can be welded and fixed to a to-be-welded part; the wire clamp assembly is arranged on the welding head fixing base and comprises a wire guide nozzle and a wire clamp, the wire guide nozzle is arranged on one side of the welding nozzle and used for guiding a metal wire to the light emitting side of the welding nozzle, and the wire clamp can move relative to the wire guide nozzle so as to be matched with the wire guide nozzle to clamp the metal wire; the cutter assembly is fixedly connected with the welding head fixing base and comprises a cutter, the cutter is arranged on the side, away from the wire guide nozzle, of the welding nozzle, and the cutter can move towards the light emitting side of the welding nozzle so as to cut off the metal wire.

This invention discloses a laser-air coaxial filament feeding and spraying additive manufacturing apparatus and method. The apparatus includes a nozzle with a collecting cavity and a filament feeding channel, a laser channel, and an air jet structure connected to the collecting cavity; an air inlet structure surrounding the air jet structure and connected to the filament feeding channel via a pipe; a filament protection tube installed in the filament feeding channel, the interior of which is used to transport filament, and the gap between the filament protection tube and the filament feeding channel is used to transport gas; and a laser generator emitting laser light into the laser channel. The output direction of the filament is the same as the airflow direction, thus only the laser focusing position needs to be adjusted. By placing the air inlet structure outside the air jet structure, when air jetting is required, the gas can first exchange heat with the air jet structure to cool it down, and then flow into the collecting cavity to spray out the molten filament. Compared to traditional structures, this method does not involve complex improvements but effectively cools the air jet structure.

The invention discloses an intelligent laser cladding welding device capable of dynamically adjusting the powder feeding rate, which comprises a laser collimator, a welding main body is mounted on the lower end surface of the laser collimator, and a laser channel pipe is coaxially arranged in the welding main body; an annular powder cavity is formed between the laser channel pipe and the welding body, one side of the welding body is connected with a powder feeding pipe, the powder feeding pipe is communicated with the annular powder cavity, and the powder feeding pipe is externally connected with a powder feeder. A welding head is arranged below the welding main body; a powder discharging mechanism is arranged on the outer side wall of the welding body and communicates with the annular powder cavity.

This application relates to a multilayer capacitor welding apparatus and its manufacturing process, comprising a conveying mechanism and a welding stand. A laser welding head is mounted on the top of the welding stand, a turntable and a driving component are rotatably mounted in the middle, and a laser channel is radially penetrated on the outer peripheral wall of the turntable's arc surface. Several piercing seats are fixedly connected to the outer peripheral wall of the turntable's arc surface, and multiple piercing needles are fixedly connected to the piercing seats. The driving component and the laser welding head are jointly connected to a welding controller. The welding controller is configured such that when the conveying mechanism intermittently conveys one of the patches on the lead frame to below the turntable, it controls the driving component to rotate the turntable and, with the help of multiple piercing needles, pierce the single-layer patch and rotate to pry up the protrusions composed of partial metal pads and aluminum foil, until the turntable rotates to the point where the laser channel on it aligns with the laser welding head. Then, it controls the laser welding head to weld the multiple protrusions on the patch. This application can improve the bonding strength between aluminum foil and metal pads, as well as between upper and lower patch components.

An engraving apparatus includes: a base provided with a carrying position configured to carry a battery to be engraved, a moving mechanism movably disposed on the base, and an engraving assembly disposed on the moving mechanism and configured to perform an engraving operation on the battery. The engraving assembly includes a laser device and a dust extraction hood. A laser channel is formed inside the dust extraction hood. When the engraving assembly performs an engraving operation, the battery is in communication with the laser device via the laser channel. The dust extraction hood is formed with a dust extraction port in communication with the laser channel. The moving mechanism is configured to be capable of driving the engraving assembly to move in a first direction, a second direction, and a third direction, and the first direction, the second direction, and the third direction are arranged to intersect one another.

The utility model discloses a welding assembly and welding equipment, and relates to the technical field of welding, the welding assembly comprises a main body part and a crimping part, the main body part is an insulating part or the surface layer of the main body part is an insulating layer, the main body part comprises a first air channel and a second air channel, the first gas channel and the second gas channel are used for gas to flow in or flow out, and the main body piece comprises a first laser channel; the crimping part is of an integrated structure, the crimping part is an insulating part, and the crimping part comprises a second laser channel; the crimping part and the main body part are of a split type structure, the crimping part is detachably connected with the main body part, the crimping part is connected to the main body part, and the first laser channel is communicated with the second laser channel. And due to the structural design of detachable connection, the replacement and maintenance time is effectively shortened, the production efficiency is improved, the maintenance and replacement cost is reduced, and the universality of the main body piece is improved.

The invention discloses a laser cladding processing system, belongs to the technical field of laser cladding processing, and solves the technical problem of poor stability of existing laser cladding processing equipment. The device comprises a cladding head, an optical fiber laser, a water cooling machine and a control module, a shell is arranged at the top of the cladding head, a laser channel, a first-stage protection lens, a first-stage collimation lens, a second-stage focusing lens and a second-stage protection lens are arranged in the shell, the axis of the laser channel, the axis of the first-stage protection lens, the axis of the first-stage collimation lens, the axis of the second-stage focusing lens, the axis of the second-stage protection lens and the axis of the cladding head coincide, and the periphery of the first-stage collimation lens and the periphery of the second-stage focusing lens coincide with the axis of the cladding head. In the laser cladding machining process, the control module obtains the temperature of each cooling water channel and controls the cooling water flow of each cooling water channel, so that the first-stage collimating lens, the second-stage focusing lens and the cladding head all work at the optimal working temperature, and therefore the stability of laser cladding machining operation is guaranteed; and the laser cladding processing quality is ensured.

The invention relates to a device for laser welding of components (2, 3) with at least one laser beam emitter and at least one pressure piece (1), which - is designed to be pressed against at least one of the components (2, 3), and - has a laser channel (5) through which a laser beam (LS) emitted by means of the laser beam emitter can be guided onto a surface of at least one of the components (2, 3). According to the invention, in a wall (4) surrounding the laser channel (5) and forming its outer surface, at least one shielding gas channel (6.1 to 6.4) is formed in an inner section facing the laser channel (5), which can be supplied with a shielding gas (SG) and has at least one shielding gas outlet (SGA) that leads through the wall (4) into the laser channel (5). Furthermore, in the wall (4), at least one cooling channel (7) is formed in an outer section facing away from the laser channel (5), which can be supplied with a cooling medium (KM). The invention further relates to a method for laser welding of components (2, 3).

The utility model provides a laser scanning projection system which comprises a plurality of laser channels, each laser channel is used for independently emitting laser, at least one laser channel comprises a laser source and a collimating and shaping assembly, the laser source is used for emitting the laser, the collimating and shaping assembly is located on a light path of the laser, and the collimating and shaping assembly is located on the light path of the laser. The collimation module is used for collimating the slow axis direction and the fast axis direction of the laser and expanding the beam in the slow axis direction of the laser; the light combining module is positioned on a light path of the laser and is used for combining the laser emitted by the plurality of laser channels into light source light; the scanning module is located on a light path of the light source light and used for modulating and reflecting the angle of the light source light so as to emit image light, and the image light is used for displaying a projection image. The utility model further provides a vehicle.

The invention relates to the technical field of laser cladding, in particular to a small inner hole laser cladding device which is characterized in that a tubular main body comprises a light inlet connector, a collimation module, a medium input module, an extension rod module, a focusing module and an output module which are sequentially connected from back to front; a laser channel penetrating front and back is formed in the tubular body, and the axis of the laser channel upwards deviates from the axis of the tubular body. A collimating lens, a protective lens I, a focusing lens, a protective lens II and a plane mirror are sequentially arranged in the laser channel from back to front, the protective lens II is arranged at the front end of the focusing module, and the plane mirror is arranged at the top of the output module; a protective gas hood is arranged at the front end of the output module, the protective gas hood is of a front-back through cylindrical structure, the rear end of the protective gas hood is communicated with the laser channel, and the front end of the protective gas hood inclines downwards; and the laser beam is transmitted to the plane mirror through the laser channel and then can be emitted from the protective gas hood. The distance between the plane mirror and the molten pool is increased, and the damage probability of the plane mirror is reduced.

The utility model relates to the technical field of battery manufacturing, in particular to a positioning mechanism for laser welding of a connecting piece for a single-core-pack battery, which comprises a top cover positioning plate and a connecting piece positioning block, and is characterized in that the middle position of the top of the top cover positioning plate is used for positioning and placing a battery top cover; the two sides of the top of the top cover positioning plate are each provided with a connecting piece positioning block capable of vertically overturning. The connecting piece positioning block is used for pressing and fixing the battery connecting piece on the top of the battery top cover, and a laser channel is formed in the connecting piece positioning block and corresponds to the welding part of the battery top cover and the battery connecting piece along the vertical direction in a penetrating manner; connecting piece positioning clamping grooves are formed in the opposite ends of the two connecting piece positioning blocks and are used for clamping the tops of the battery connecting pieces; the positioning mechanism can directly position the battery connecting piece and the battery top cover, facilitates welding operation of the single-core-wrapped battery, and solves the problem that an existing positioning mechanism cannot be directly applied to the laser welding process of the connecting piece of the single-core-wrapped battery.

The application provides a multi-channel holmium laser cooperative output control method and system for high-power holmium laser equipment, which comprises the following steps: determining the feasibility of the emission of each laser channel in the next pulse period based on the target pulse parameters of the current treatment mode and the real-time state data of the multi-channel laser, to obtain candidate available channels; determining the current emission channel based on the historical working data, energy feedback data and real-time electrical state of each channel in the candidate available channels; adjusting the timing parameters of the laser trigger signal based on the state recovery requirements of the current emission channel, the optical path switching time consumption and the inherent delay of the system, to obtain a synchronous trigger instruction; and triggering the current emission channel to perform laser pulse emission after confirming the optical path alignment based on the optical path switching mechanism in response to the synchronous trigger instruction, and updating the energy feedback data based on the energy deviation of the current laser pulse emission. The application guarantees the accuracy and reliability of clinical treatment.

The utility model discloses a handheld laser welding gun, which belongs to the technical field of laser welding and comprises a gun body and a laser channel in the gun body, one end of the laser channel is connected with a gun head, one end of the laser channel is connected with a laser collimation module, and an optical fiber is connected with one end of the laser collimation module; incident light sequentially passes through the laser collimation module, the laser reflecting mirror, the collecting mirror and the gun head. The shell is detachably mounted at the bottom of the gun body; the galvanometer motor is fixed to the gun body and located in the shell. The protective glass is detachably mounted in the gun body; the airflow channel is used for being connected with an air pump to blow air to the gun head and dissipate heat in the welding gun; the control panel is located in the shell; and the button module is embedded on the shell. Compared with an existing laser welding gun with a reflector adjusting function, the handheld laser welding gun has the advantages that the control panel of the motor is integrated into the cavity, and the problem of interference of control signals of the motor can be effectively solved.

A medical water jet cutter system. The medical water jet cutter system is provided with an insertion portion (12) and a handle portion (11) connected to the near end of the insertion portion (12), and the medical water jet cutter system comprises a water jet cutter assembly, a laser assembly, and a suction control assembly. The water jet cutter assembly comprises a water jet cutter channel (101) penetrating through the insertion portion (12) and the handle portion (11) and is configured to output a jet. The laser assembly comprises a laser channel (201) penetrating through the insertion portion (12) and the handle portion (11) and is configured to output laser energy. The suction control assembly comprises a suction channel (401) penetrating through the insertion portion (12) and the handle portion (11) and is configured to suck a fluid. The medical water jet cutter instrument combines water jet cutter technology and laser technology and enables the resection of prostate tissue without thermal damage while achieving hemostasis. In addition, the medical water jet cutter instrument enables the use of one instrument to complete an entire operation; during the operation, there is no need to replace the surgical instrument. The medical water jet cutter instrument is simple to operate and has a short learning curve.

This utility model discloses a toner cartridge with increased capacity, comprising a toner cartridge body and a waste toner cartridge. The toner cartridge body is installed at the lower end of the waste toner cartridge, and a gap is formed between the lower end of the waste toner cartridge and the front side of the upper end of the toner cartridge body, which constitutes a laser channel. Capacity expansion compartments are respectively provided on the left and right sides of the upper front side of the toner cartridge body. The capacity expansion compartments include a first receiving compartment and a second receiving compartment. The first receiving compartment is located directly below the waste toner cartridge, and the second receiving compartment is located in front of the front end of the waste toner cartridge, with its upper end extending above the front end of the waste toner cartridge. Since there is already a gap between the toner cartridge body and the waste toner cartridge for the laser beam to pass through, the first receiving compartment utilizes the unused space between the waste toner cartridge and the toner cartridge body, increasing the capacity of the toner cartridge body; the second receiving compartment extends to the front end and above the waste toner cartridge, utilizing the longitudinal space in front of the waste toner cartridge and the unused space in front of the toner cartridge inside the printer.

The utility model relates to the technical field of laser remelting, and discloses a protective gas flow guide device for laser remelting, which comprises a flow guide shell and a lifting seat, and the lifting seat is connected to the bottom end of the flow guide shell and is arranged close to the gas inlet end of the flow guide shell; the air inlet end of the flow guide shell is connected with protective gas supply equipment, a plurality of flow guide blades are rotationally arranged at the air outlet end of the flow guide shell, and the angles of the flow guide blades adapt to the laser operation direction. The lifting seat is adjusted to a preset height, so that the air outlet end of the flow guide shell adapts to the height of a workpiece to be machined and the height of the cooling medium box, protective gas flowing out of the flow guide shell is located between a laser head and the workpiece, and smoke dust and splashing powder are prevented from entering a laser channel; along with the movement of the laser head, the angle of the guide vane is adjusted, so that the guide vane can adapt to the working position of the laser head, protective gas flow intensively covers a remelting area, the blocking effect on smoke dust in the working area of the laser head is improved, and the using amount of protective gas is reduced.

The invention relates to the field of laser-induced breakdown spectroscopy collection, in particular to a portable laser-induced breakdown spectroscopy collection device and a control method, and the laser-induced breakdown spectroscopy collection device comprises a laser emitting device, a sample bearing mechanism and a collection mechanism; the laser emitting mechanism is used for emitting laser beams; the sample bearing mechanism comprises a sample bearing plate; the collecting mechanism comprises a supporting frame body, a plurality of collecting assemblies and a plurality of adjusting units, the supporting frame body is provided with a laser channel axis allowing a laser beam to penetrate through, and the adjusting units are arranged corresponding to the collecting assemblies; each adjusting unit comprises a linear driving mechanism used for driving the collecting head to linearly reciprocate in the radial direction pointing to the axis of the laser channel, and an angle adjusting mechanism used for adjusting the included angle between the optical axis of the collecting head and the plane where the sample bearing plate is located. The technical effects that the signal light generated by the plasma is comprehensively collected from multiple angles, and the stability and comprehensiveness of signal light collection are improved are achieved.

The invention discloses a femtosecond laser processing smoke dust real-time adsorption device, and relates to the technical field of laser precision processing, the femtosecond laser processing smoke dust real-time adsorption device comprises a mounting bracket, and the mounting bracket is used for fixedly connecting an adsorption device with a focusing objective lens of femtosecond laser equipment; the adsorption head unit comprises an inner pipe and an outer pipe which are coaxially arranged, the inner pipe forms a laser channel for femtosecond laser beams to pass through, an annular adsorption cavity is formed between the inner pipe and the outer pipe, and a plurality of adsorption micropores communicated with the annular adsorption cavity are formed in the pipe wall of the tail end of the inner pipe; the airflow pipeline is connected to the outer pipe, communicates with the annular adsorption cavity and is used for generating adsorption airflow; and the cooling unit is arranged on the periphery of the pipe wall of the tail end of the outer pipe in a sleeving mode, and an annular cooling water pipe is arranged in the cooling unit. Through real-time adsorption, light path protection and efficient cooling, the problem of smoke dust pollution in femtosecond laser precision machining is solved.

The application discloses a super search structure with fine adjustment, and belongs to the technical field of surveying instruments. The super search structure comprises a machine body, a laser transmitter, a photosensitive circuit board, an angle adjusting part, an angle locking part, a horizontal adjusting part and a horizontal locking part. An optical element is arranged in a laser channel of the machine body. The photosensitive circuit board receives laser emitted by the laser transmitter. The angle adjusting part and the angle locking part are detachably connected with the machine body. The angle adjusting part adjusts the rotating angle of the photosensitive circuit board on the machine body. The angle locking part limits the rotation of the photosensitive circuit board. The photosensitive circuit board is detachably connected with the machine body through the horizontal adjusting part and the horizontal locking part. The horizontal adjusting part adjusts the horizontal position of the photosensitive circuit board on the machine body. The horizontal locking part locks the photosensitive circuit board on the machine body. The application can adjust the relative positions of the laser transmitter, the photosensitive circuit board and the optical element in the optical path, simplifies the adjusting process, and prevents loosening during fixing.

The embodiment of the utility model discloses an efficient heat dissipation laser processing head which comprises a supporting body and a nozzle, a first laser channel and a second laser channel which are used for a laser beam and auxiliary gas to pass through are arranged in the nozzle and the supporting body respectively, the minimum diameter of the first laser channel is larger than the maximum light spot diameter of the laser beam, and the minimum diameter of the second laser channel is larger than the maximum light spot diameter of the laser beam. According to the scheme, the large-size anti-slag-returning design is adopted, the diameter of a laser channel and the heat dissipation face of the annular protruding edge are increased, the influence of laser heat energy on the nozzle can be effectively reduced, cutting slag is prevented from being attached to the surface of the nozzle, and the risk that the temperature of the nozzle rises is reduced.

The invention discloses an integrated nozzle based on an air curtain type underwater facade laser additive repairing method. The integrated nozzle comprises a nozzle body, a laser channel is formed in the center of the nozzle body, and a powder feeding channel is formed in the outer circumferential direction of the nozzle body; a cooling sleeve is arranged in the middle of the nozzle body, and a water-gas coupling sleeve is arranged on the lower portion of the nozzle body and located below the cooling sleeve. A plurality of fan-shaped openings are formed in the bottom of the water-gas coupling sleeve, and a gas outlet and a water flow outlet are formed in each fan-shaped opening in the radial direction; the gas outlets and the water flow outlets in the connected fan-shaped openings are alternately arranged, namely, one fan-shaped outlet is in an inner-side water and outer-side gas distribution mode, and the adjacent fan-shaped outlets are in an inner-side gas and outer-side water distribution mode; according to the air curtain type underwater laser additive repairing method, the air curtain type underwater laser additive repairing principle is utilized, in-situ repairing is conducted on the defects existing in the underwater vertical face position, traditional pumping-out repairing is avoided, the maintenance period is greatly shortened, and the repairing efficiency is improved.

The present application belongs to the technical field of micro-nano manipulation, photoelectric tweezers, microfluidic chip and biological photoelectric manipulation, and discloses a multi-color composite coaxial light path photoelectric tweezers system and a manipulation method, which comprises a multi-color light source output module, a coaxial composite projection module, a self-calibration pre-compensation module, a photoelectric tweezers chip manipulation module, a coaxial imaging feedback module and a closed-loop control calculation module. By using the composite of laser, LED white light and RGB multi-color light source, multi-color beam combination, coaxial projection with the same objective, coaxial imaging return with the same objective, multi-wavelength independent self-calibration pre-compensation and closed-loop feedback control principle, the multi-color composite coaxial projection beam, the red light channel space mapping model, the green light channel space mapping model, the blue light channel space mapping model, the laser channel space mapping model, the pre-compensation light pattern and the multi-color dynamic manipulation light pattern are generated, and low-damage wide-field manipulation, local fine manipulation, multi-color coding manipulation and target path closed-loop correction are realized.

The application relates to a semiconductor chamber leakage detection system and method. The semiconductor chamber leakage detection system comprises a channel module, a laser emitter, a beam splitter, a laser pipeline, a pumping module and a detection module. The laser emitter emits laser into a laser channel. Part of the laser passes through the beam splitter to form first laser. The rest of the laser is reflected by the beam splitter to form second laser and enter a detection channel. The laser pipeline reflects the first laser to form third laser. The pumping module pumps the third laser. The detection module receives the second laser and the third laser to analyze and determine the leakage of the semiconductor chamber. The semiconductor chamber leakage detection method comprises the following steps: placing the gas cap of the laser pipeline at the detection point; collecting the signals of the first detector and the second detector and converting them into gas concentration value C; setting a standard value; comparing the gas concentration value C with the standard value to determine whether leakage occurs. The application can be effectively applied to the narrow space of semiconductor equipment and high-precision detection is realized.

A transmitting system (50) and a related device, applied to the technical field of lidars. The transmitting system (50) comprises: at least one first laser circuit (501), a first driving unit (500), and a first power supply (V1). The first laser circuit (501) comprises a first laser (501a), a first energy storage unit (501b), and a first switch (501c). The first power supply (V1) is connected to the first laser (501a) and the first energy storage unit (501b) by means of the first switch (501c), the first laser (501a) and the first energy storage unit (501b) are connected in parallel, and the first driving unit (500) is connected to the first laser (501a). A voltage value provided by the first power supply (V1) is related to the relative position of the first laser circuit (501) and the first driving unit (500). The transmitting system (50) can reduce the consistency differences in output optical pulse width and transmit power between laser channels, thereby improving the detection performance of lidars.

The invention relates to the technical field of medical instruments, and discloses a small-caliber thick laser channel transurethral surgical instrument combined suite and a using method thereof.The small-caliber thick laser channel transurethral surgical instrument combined suite comprises a connector, an endoscope table, an operation table and a sleeve, the left end of the connector is provided with a connector and a special-shaped pipe, and the surface of the connector is provided with a water inlet hole; a water inlet cavity is formed in the connector, and a water inlet groove is formed in the special-shaped pipe. An outer pipe is arranged at the left end of the sleeve, a water inlet pipe and a water outlet pipe are arranged on the surface of the sleeve in a staggered mode, an inner sheath and an outer sheath are further arranged in the sleeve, and the inner sheath and the outer sheath divide the interior of the sleeve into a drainage cavity and a water injection cavity. The special-shaped hole structure is adopted to replace a traditional circular channel, while the outer diameter of the instrument is remarkably reduced, the internal operation space is not sacrificed, a smooth channel is provided for a thicker laser optical fiber, and a gap between an optical fiber pipeline and the inner wall of the special-shaped hole is ingeniously utilized to form an efficient water inlet channel.

The invention discloses an optical fiber laser coupler capable of realizing real-time optical fiber detection, which comprises a coupler base and a coupling head, and is characterized in that one end of the coupling head is provided with a coupling input end assembly, and the other end is provided with a coupling output end assembly; an optical shutter assembly is arranged on the side face of the coupling head and used for controlling opening and closing of a laser channel in the coupling head. A sensing and protection integrated assembly is integrated at the end part of a coupling output end assembly of the coupling head, an optical coupling sensing module is integrated in the sensing and protection integrated assembly, and the optical coupling sensing module is used for receiving light refracted or reflected by the damaged surface of the optical fiber, converting an optical signal into an electric signal and sending the electric signal to a control end. According to the optical fiber laser coupler, two independent optical fibers with the diameter smaller than 200 micrometers can be coupled, the working state of the laser can be fed back in time, the optical fibers connected to the two ends of the coupling head can be independently inserted, pulled and replaced, and meanwhile excellent optical performance and mechanical stability are kept.

The invention discloses an underwater laser additive repairing device and method, and relates to the technical field of equipment repairing, the underwater laser additive repairing device comprises a mounting cover, an annular light spot laser, a gas supply assembly and a plurality of wire feeders, a laser channel and a gas channel are arranged in the mounting cover, a plurality of wire feeding pipes are fixedly arranged on the mounting cover, and all the wire feeding pipes are arranged around the laser channel; a wire outlet is formed in the bottom end of the wire feeding pipe and located below the laser channel and the gas channel. The wire feeding machine can provide wires for the wire feeding pipe. The annular light spot laser can emit annular light spot laser to the laser channel, and the annular light spot laser can reach a wire sent out from the wire outlet; the gas supply assembly can provide shielding gas for the laser channel and the gas channel, the shielding gas in the gas channel is jetted to the position below the gas channel to form an annular gas curtain, the annular gas curtain surrounds the molten pool, and the shielding gas in the laser channel can reach the molten pool; according to the method, water can be effectively drained and isolated, and the repairing efficiency and quality can be improved.