169 results about "Laser channel" patented technology

The utility model relates to the technical field of welding, in particular to a dust collecting device. The dust collection device comprises a mounting body and an anti-backflow piece, a laser channel and a dust collection channel which are intersected are formed in the mounting body, the dust collection channel is provided with an air outlet, and the anti-backflow piece is arranged in the dust collection channel and located between the air outlet and the laser channel. The anti-backflow piece can prevent pollutants in the dust collection channel from flowing in the direction from the air outlet to the laser channel, can prevent the pollutants from flowing back, prevents the pollutants from damaging the interior of the laser lens, prevents the laser lens and laser welding equipment from being damaged, guarantees normal proceeding of the laser welding process, and improves the welding quality. And the maintenance cost and the maintenance frequency of the laser lens are reduced.

The invention discloses an annular laser cladding nozzle which comprises a nozzle body, a laser channel is formed in the center of the nozzle body, the nozzle body is provided with a plurality of gas-powder mixing cavities, an annular powder channel, a cooling channel and an annular gas storage bin, and the gas-powder mixing cavities are annularly formed in the periphery of the laser channel at intervals; each gas-powder mixing cavity is communicated with a powder feeding channel for inputting metal powder, a lower outlet of each gas-powder mixing cavity is communicated with an annular powder channel, and the annular powder channel is provided with a plurality of flow guide baffles. Powder enters the gas-powder mixing cavity and flows into the annular powder channel by means of gravity and air pressure. A flow guide baffle arranged in the annular powder channel effectively guides powder to flow, concentrated accumulation is prevented, and uniform distribution is guaranteed. The cooling efficiency of the nozzle is improved through the design of the cooling channel, cooling liquid circulates along an S-shaped loop, and it is ensured that the nozzle stably works under the high-temperature condition. In addition, the annular gas storage bin is further arranged, local excessive concentration of shielding gas is avoided, and therefore the stability of the cladding process is improved.

The utility model provides a mini LED chip detection device, which comprises a laser transmitter, a light guide plate and a laser receiver, the laser transmitter is arranged on one side of the light guide plate, the laser receiver is arranged on the other side of the light guide plate, more than one laser channel is arranged on the light guide plate, one end of the laser channel is arranged corresponding to the laser transmitter, and the other end of the laser channel is arranged corresponding to the laser receiver. The other end of the laser channel is arranged corresponding to the laser receiver, a first refraction piece set and a second refraction piece set are arranged on the laser channel, one end of the first refraction piece set is used for receiving light emitted by the laser emitter, the first refraction piece set and the second refraction piece set protrude out of the light guide plate, and a gap is formed between the first refraction piece set and the second refraction piece set. According to the utility model, whether the position of the mini LED chip on the lamp panel deviates or not can be accurately detected through the light guide plate by laser, the structure is simple, and the detection efficiency is high.

The invention provides a blowing head and laser welding equipment, the blowing head comprises a body, the body is provided with a laser channel in a penetrating mode, the laser channel is provided with a light inlet end and a light outlet end, and a laser beam is transmitted to the light outlet end from the light inlet end; the protective glass is positioned on one side of the light inlet end; a blowing channel used for conveying protective gas into the laser channel is arranged on the side wall of the body in a penetrating mode. The end face, close to the light outlet end, of the body is provided with a spherical reflecting face which is concavely arranged towards the light inlet end, the spherical reflecting face and a space defined by a welded workpiece form a heat storage space, and the laser channel is communicated into the heat storage space. According to the method, the influence of protective gas on cooling of a welding spot area can be reduced, the laser absorption rate of a welded part is increased, and the welding depth and quality are guaranteed.

The utility model provides a handheld laser welding gun head, and belongs to the technical field of laser welding. The welding gun is used for solving the problems that in the prior art, a welding gun is generally cumbersome in design and not flexible enough in many practical application scenes. Comprising a welding section and a grabbing section which are connected with each other and internally provided with a laser channel, the tail end of the welding section is a welding nozzle, and the tail end of the grabbing section is used for being connected with a laser output interface. The galvanometer assembly is arranged at the joint of the welding section and the grabbing section and reflects laser emitted from a laser channel in the grabbing section into the welding section. The protective lens assembly and the focus lens assembly are arranged on the welding section in a removable mode, and laser emitted into the welding section passes through the focus lens assembly and the protective lens assembly and then is emitted into the welding nozzle. According to the miniaturized handheld laser welding gun, the working efficiency is remarkably improved, and the flexibility of industrial production is promoted.

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 utility model relates to the technical field of laser cutting heads, and provides a laser cutting head which comprises a laser head, the laser head is fixedly installed at the outlet end of a lens device, a laser channel is formed in the inner side of the laser head, a protective gas distribution mechanism is arranged on the inner side of the laser channel, and the protective gas distribution mechanism comprises an inner shell concentric with the laser head. The inner shell is located at one end of the laser channel, a gas inlet piece used for guiding protective gas into the inner shell is arranged on the outer side of the inner shell, and a gas guiding piece used for guiding the protective gas out of the inner shell is arranged at one end of the inner shell. The protective gas can be guided out of the laser head in parallel with the laser beam through the gas guide piece, and the problem that in the prior art, the protective gas is guided in the direction perpendicular to the laser beam, interference is caused to the laser beam, and workpiece cutting is affected is solved.

The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a laser welding hold-down clamp and equipment, and the middle of the laser welding hold-down clamp is hollow to form a laser channel for laser to pass through. And an air blowing channel is arranged at the lower part of the pressing tool for laser welding. Nitrogen serving as shielding gas is blown into the welding point position through the gas blowing channel. A dust suction ring way is arranged in the upper portion of the pressing tool for laser welding, and at least one side of the upper portion of the pressing tool for laser welding is provided with a dust suction opening. And the dust extraction opening, the dust extraction loop and the laser channel are sequentially communicated to form a dust extraction channel. The dust suction opening can communicate with an air suction pump, and negative pressure is provided by the air suction pump, so that smoke dust sequentially passes through the laser channel, the dust suction annular channel and the dust suction opening and then flows out of the laser welding pressing tool. On the whole, a traditional dust extraction channel is improved, so that the dust extraction efficiency and the dust extraction effect are greatly improved, the amount of smoke detained near a welding point position is reduced, the weld penetration stability is high, and the pseudo soldering phenomenon is avoided.

The utility model discloses a cooling structural body and a laser processing head, the cooling structural body comprises a liquid cooling module and a nozzle, a laser channel for laser to axially pass through is arranged in the liquid cooling module, and the nozzle is attached to the end part of the liquid cooling module; the liquid cooling module is provided with a liquid cooling cavity, a liquid inlet hole and a liquid outlet hole, the liquid inlet hole and the liquid outlet hole are communicated with the liquid cooling cavity, the liquid cooling cavity comprises a first liquid channel communicated with the liquid inlet hole, a first transfer channel communicated with the first liquid channel and a liquid inlet channel communicated with the first transfer channel, and the liquid inlet channel is communicated with the first transfer channel at the communication position of the first transfer channel and the liquid inlet channel. The radial section of the first transfer channel is eccentrically arranged relative to the radial section of the liquid inlet channel. Through the arrangement of the eccentric water channel structure, water flow forms vortexes, turbulence is increased, and enhanced heat transfer is formed in the flow channel, so that heat at the nozzle can quickly enter the water flow and then is quickly taken away by the water flow, the cooling efficiency of the nozzle is improved, and the nozzle is prevented from being overheated and burnt.

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 discloses a laser head gas circuit structure capable of improving cutting quality. The laser head gas circuit structure comprises a laser, a laser channel, a focusing mechanism, a gas supply unit and a nozzle device. Wherein a laser channel is vertically arranged in the middle of the laser device, a focusing mechanism is horizontally installed in the laser device and located in the laser channel, a nozzle device is vertically installed below the laser device, and a first air channel and a second air channel which are independent are arranged in the nozzle device. The first gas channel and the second gas channel spray protective gas to the laser cutting points from the corresponding gas blowing points at the same time. A gas supply unit is arranged between the laser and the nozzle device and is used for conveying protective gas to a first gas channel and a second gas channel in the nozzle device; the spraying direction of the first air channel right faces the cutting focus position of the laser. And the spraying direction of the second air channel is the peripheral position of the circumference of the cutting focus of the laser.

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 invention discloses laser cutting equipment for metal processing, and relates to the technical field of laser cutting, the laser cutting equipment comprises a rack main body, a sliding table is arranged on the rack main body, a cutting head is arranged in the sliding table, a laser channel assembly is arranged in a cutting head chamber, a shield is arranged at the bottom end of the cutting head, and the bottom end of the cutting head is sunken upwards to form a mounting groove; the adjusting assembly is arranged in the cutting head, gas leakage is reduced as much as possible, the gas spraying range can be controlled, the good slag removal effect is achieved, the linkage effect drives the auxiliary mechanism to adjust the diameter of a movable ring in a nozzle gas channel, the gas spraying range can be controlled, the gas spraying range can be controlled, the slag removal effect is good, and the service life of the cutting head is prolonged. And the gas can be accelerated when passing through the movable ring, so that the efficiency of the cutting head is improved.

The present application discloses an annular spectroscopic detection module, a flow cytometer and a debugging tool. The annular spectroscopic detection module is composed of a concave reflector, a circular array filter group, a circular array focusing lens group and a circular array light detector group which are coaxially arranged in sequence to form a fluorescence detection submodule. The fluorescence detection submodule uses the principle of repeated focusing of light and adopts a concave reflector and a group of circular array filters to form an annular reflection light path. During multiple reflections of fluorescence, adjacent channels are only reflected once by the concave reflector, so the light energy loss is small. In addition, the collimated light path is focused once each time it is reflected by the concave reflector, so that the imaging size on the channel light detector is almost not affected by the fluorescence collimation and the number of detection channels. Therefore, the annular spectroscopic detection module has a flexible channel configuration scheme, a simple light path structure, a small light energy loss and simple light path debugging using the debugging tool, and can meet the laser channel expansion requirements of the current flow cytometer.

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 utility model discloses an auxiliary frame laser marking device comprising the following structures: a rack comprising a work bench, the top surface of which is used for placing a product to be marked; the marking mechanism comprises a laser marking body arranged below the workbench, a laser marking head used for marking a to-be-marked product and an optical fiber cable electrically connected with the laser marking body and the laser marking head, and the laser marking head can be arranged in a handheld mode; the positioning support comprises a connecting frame and a positioning frame detachably connected with the connecting frame, the connecting frame is connected with the laser marking head, the positioning frame is used for positioning the laser marking head on a to-be-marked product, a laser channel is formed between the connecting frame and the positioning frame, and the laser channel is communicated with the laser marking head. The laser channel extends in the direction of laser energy emitted by the laser marking head, and the laser channel allows the laser energy emitted by the laser marking head to pass through. According to the utility model, the labor intensity of operators can be reduced, and the marking efficiency is improved.

A laser ranging telescope capable of switching multiplying power comprises a main body which is provided with a laser channel, and a first light path channel and a second light path channel which can be communicated through a through hole; two axial ends of the first light path channel are respectively provided with a first objective lens group and an eyepiece group, and a reflective switching plate capable of rotating to a first position and a second position is arranged in the first light path channel; one axial end of the second light path channel is provided with a second objective lens group of which the amplification factor is different from that of the first objective lens group, and the second objective lens group is internally provided with a reflecting mirror for reflecting natural light entering the second light path channel to the reflective switching plate; when the reflective switching plate is at the first position, the reflective switching plate closes the through hole, and natural light passes through the first objective lens group, enters the first light path channel and is imaged at the eyepiece group. And when the reflection switching plate is at the second position, the first light path channel (rear section) is communicated with the second light path, and the natural light passes through the second objective lens group, enters the second light path channel and is reflected by the reflection switching plate to the eyepiece group for imaging.

The invention discloses a microminiature laser induced deviation servo rotary table which comprises a supporting frame, an orientation transmission mechanism and a pitching transmission mechanism are arranged on the supporting frame, and the orientation transmission mechanism comprises a driving wheel transmission mechanism, a driven wheel transmission mechanism and an idle gear transmission mechanism. The driving wheel transmission mechanism and the driven wheel transmission mechanism form a gear meshing chain through the idle gear transmission mechanism; the pitching transmission mechanism comprises a first pitching transmission mechanism and a second pitching transmission mechanism, the first pitching transmission mechanism is arranged at the top of the driving wheel transmission mechanism, the first pitching transmission mechanism comprises a photoelectric detection mechanism, and the photoelectric detection mechanism is driven by a first gear pair; the second pitching mechanism comprises a reflecting mirror, the reflecting mirror is driven by a second gear pair, coaxial laser channels are formed in the driven wheel transmission mechanism and the supporting frame, the reflecting mirror is arranged above an opening of the laser channels, and meanwhile the device has the advantages of being small in size and light in weight and can meet the design requirement of a light-weight combat system.

The present invention relates to the field of welding technology, and in particular to a coaxial gas protection device for welding, comprising a coaxial connecting seat, a coaxial protection seat, a laser channel, a protection nozzle, and a gas uniformity component. By forming a relatively closed protective gas accommodating chamber inside the coaxial connecting seat and the coaxial protection seat, the protective gas can be stabilized and gas disorder can be prevented; by arranging a gas uniformity component in the accommodating chamber, the gas can be uniformized, and the effect of uniform gas distribution can be improved. The protective gas passes through gas channels with successively decreasing diameters, accelerating the ejected gas, forming a stable protection area and reducing the gas input flow rate. By arranging a curved groove at the bottom end of the coaxial protection seat and internally connecting a plurality of uniformly distributed gas channels, a stable spatial three-dimensional protective gas atmosphere can be formed above the weld during the welding process, resulting in a better protection effect. At the same time, it can also prevent the influence of other airflows and stabilize the welding protection effect.

The utility model relates to the technical field of particle counting sensors, in particular to a light supplementing structure of a particle counting sensor, which comprises a sensor body and a laser transmitter, a photosensitive cavity is arranged in the sensor body, a laser channel is arranged on one side of the photosensitive cavity, and an extinction channel is arranged on the other side of the photosensitive cavity. The laser channel and the extinction channel are coaxially arranged; the delustring device further comprises a plug, and one end of the plug is detachably arranged in the delustring channel. A counter bore is formed in one end, facing the laser channel, of the plug, and the bottom of the counter bore is used for reflecting a laser beam emitted by the laser emitter back to the photosensitive cavity; according to the utility model, the hole bottom of the counter bore is used for reflecting the laser beam emitted by the laser emitter back to the photosensitive cavity, so that the sampling air flow can be subjected to bidirectional irradiation, light supplement is realized, and when the number of particles in the sampling air flow is large, the light scattering effect can be enhanced in a bidirectional irradiation manner, and the measurement precision is improved.

An omnidirectional optronic system includes two axes of rotation, a carrier axis and a carried axis, that are perpendicular to each other, for an aircraft targeting pod, having an imaging channel and a laser channel, the laser channel at the point of injection at the entrance of the system and the imaging channel being concentric with the carrier axis, then split and emitted out in parallel.

The utility model relates to a dust removal device suitable for laser welding, which comprises an emitting head, a dust removal device and a dust removal device, the emitting head is provided with a laser channel for a laser beam to pass through, a welding opening used for being in butt joint with a welding area of a workpiece is formed in the bottom of the laser channel, and the emitting head is further provided with a shielding gas channel for introducing shielding gas into the welding opening; and the dust removal cover is connected to one end of the emitting head and communicates with the shielding gas channel, and a plurality of gas extraction channels which are used for extracting dust at the welding opening and are of a spiral rising structure are formed in the periphery of the dust removal cover. A plurality of air exhaust channels which are used for exhausting dust at the welding opening and are of a spiral ascending structure are formed in the periphery of the dust removal cover, and spiral ascending airflow can be formed during air exhaust of the air exhaust channels to exhaust welding slag. The air flow of the air exhaust channel is spiral, due to the Bernoulli's law, the edge air pressure is large, the center air pressure is small, and fluid has the trend of rapidly moving towards the edge, so that the air flow has higher suction force, and meanwhile, the air flow has higher stability and dust removal effect.

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.

The invention relates to an infusion monitoring device for neurological serious illness, which comprises an infusion support mechanism, a laser monitoring mechanism, a gravity detection mechanism, a switching positioning mechanism and an infusion tube limiting mechanism, and is characterized in that the laser monitoring mechanism forms a detection channel through a laser generator and a laser receiver; the gravity detection mechanism comprises a rotatable rotating disc, a tilting rod, a hook, a connecting rod, a balancing weight and a first spring, the balancing weight moves upwards or downwards under the action of the weight change of the infusion bottle to shield the laser channel to achieve monitoring reminding of infusion ending, and the switching positioning mechanism is used for adjusting the angle of the rotating disc to achieve monitoring channels corresponding to infusion bottles with different capacities. The infusion support structure has a height adjusting function, the infusion tube limiting mechanism achieves limiting and heat preservation of an infusion tube through a heating and clamping structure, and the device has the functions of being accurate in monitoring, convenient to switch, wide in application range, capable of heating in winter and the like.

The invention provides an on-chip integrated microwave photon-assisted channelized frequency measurement system, which is applied to the technical field of microwave photons. The system comprises a light source module used for emitting optical carriers with different wavelengths through N laser channels; the beam combining module is used for combining the N optical carriers with different wavelengths through N first channels to obtain a multi-wavelength optical carrier signal; the modulation module is used for receiving a radio frequency input signal and loading the radio frequency input signal to the multi-wavelength optical carrier signal to obtain a multi-wavelength radio frequency modulation optical signal; the filtering module is used for filtering the multi-wavelength radio frequency modulation optical signal so as to extract a single sideband of the radio frequency modulation optical carrier signal of each wavelength; the beam splitting module is used for separating the filtered multi-wavelength radio frequency modulation optical signals and distributing the multi-wavelength radio frequency modulation optical signals to N second channels; and the detection module is used for detecting the power of the output signals of the N second channels so as to determine the frequency range of the radio frequency input signal.

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 relates to a chip for biomarker detection and a preparation method and application thereof. The chip comprises a conductive layer and an insulating polymer layer which are stacked in sequence, a plurality of micropores are formed in the insulating polymer layer, and each micropore penetrates through the insulating layer; or a semiconductor layer is also arranged between the conductive layer and the insulating polymer layer; the semiconductor layer comprises a semiconductor modified by a silane coupling agent and / or a titanate coupling agent. The microholes can capture various fixed types of fluorescent dyes at the same time, the chip for biomarker detection is used in immunoassay detection, various different markers can be detected, chemical, optical and electric reactions are carried out under the action of chemical reagents, light and electricity, multi-fluorescence imaging is carried out under multiple laser channels, and the biomarker detection accuracy is improved. The multi-channel biomarker detection based on electrochemical single-molecule immunoassay detection is realized, and the method has the advantages of low cost, high sensitivity, simple detection steps and rapid detection.