1408results about "Solder feeding devices" patented technology

The invention relates to the technical field of chip welding, in particular to a pin lossless welding device for chip processing and a welding method thereof.The method comprises the steps that laser scanning processing is conducted on a chip pin area to obtain three-dimensional space coordinate data of a chip, and the three-dimensional space coordinate data comprises a plurality of data points; generating a plurality of connection nodes according to the incidence relation of the plurality of data points in the space, and performing clustering processing on the plurality of connection nodes to obtain a plurality of regional node clusters; performing welding path optimization processing and heat flow distribution simulation processing on the plurality of regional node clusters to obtain a temperature change curve of each path; and performing data analysis processing and dynamic adjustment processing on the temperature change curve to obtain a final welding control strategy, and controlling the welding robot to weld the chip based on the final welding control strategy. According to the method, the defects of an existing welding technology in the aspects of precision, stability and adaptability are effectively overcome by dynamically adjusting the control strategy.

The utility model discloses a full-automatic tin soldering machine which comprises a tin soldering table, a tin soldering mechanism, a visual detection device, a tin breaking and supplying assembly and a dust removal device, workpiece guide rails are arranged on the tin soldering table, each workpiece guide rail is connected with a sliding table in a sliding mode, jigs are placed on the sliding tables, and workpieces to be welded are contained on the jigs. A first support and a second support are fixedly arranged above the tin soldering table, a first sliding rail is arranged on the first support, a second sliding rail is arranged on the second support, the first sliding rail is parallel to the second sliding rail, the first sliding rail and the second sliding rail are both perpendicular to a workpiece guide rail below, and a visual detection device is slidably connected to the first sliding rail. The visual detection device can identify and position the pin welding position on the workpiece, the second sliding rail is slidably connected with a tin soldering mechanism, the tin breaking and supplying assembly is connected to the side face of the tin soldering mechanism, and the dust removal device is arranged behind the tin soldering table. Whole-process automatic operation of welding spot positioning, automatic tin supplying and breaking and automatic tin soldering can be achieved, and the automatic tin soldering machine has the advantages of being stable and rapid in operation and high in safety.

The precise welding control method for vacuum brazing comprises the steps that the geometrical shape and material characteristics of a workpiece are obtained, modeling processing is conducted in combination with the geometrical shape and the material characteristics, and a high-dimensional tensor and a high-dimensional time sequence are compared and calculated to obtain a deviation matrix; based on the deviation matrix, the brazing heating power and the brazing filler metal supply rate are adjusted, and a real-time control instruction set is generated; constructing a deep reinforcement learning model, performing iterative optimization on the real-time control instruction set based on the deep reinforcement learning model, extracting weld defect characteristics of the workpiece, generating a weld quality score according to the weld defect characteristics, and obtaining a difference value between the weld quality score and a set threshold value; and performing comprehensive optimization on the optimization parameter vector according to the difference value to generate a global optimization parameter set. According to the method, systematic dynamic control over complex geometrical shapes and multi-material workpieces is achieved, the defects of response lag and insufficient regulation and control are overcome, and therefore the process stability and production efficiency of vacuum brazing are greatly improved.

The invention relates to the field of welding devices, in particular to an inductance coil welding technology which comprises the following steps that firstly, a bent section of an inductance coil is sleeved with a wiring terminal; secondly, the inductance coil is placed on a positioning jig of a welding device to be positioned; 3, starting a welding device, and welding the wiring terminal and the bent section of the inductance coil; and fourthly, the welded inductance coil finished product is taken down from the positioning jig, meanwhile, the inductance coil to be welded is placed on the jig, and the first step, the second step and the fourth step are repeated. The welding efficiency and the welding quality of the double-layer inductance coil are improved at the same time.

The invention discloses nuclear power large pipeline butt weld automatic welding equipment which is installed on a rail and comprises a walking assembly, the walking assembly comprises a walking driving piece, a walking driving wheel, two walking driven wheels and two walking shafts, the walking driving piece is in transmission connection with the walking driving wheel, and the walking driving wheel is in transmission connection with the walking driven wheels; the two walking driven wheels are in transmission connection with the two sides of the walking driving wheel respectively, each walking driven wheel is connected with one walking shaft, and at least one walking shaft is provided with walking wheel teeth meshed with the straight teeth on the track. A group of walking driven wheels are symmetrically arranged on the two sides of the walking driving wheel, so that the shaking phenomenon caused by the back clearance of the gear and the translation of the gravity center when equipment walks near the highest point or the lowest point of the track can be effectively prevented, the stability of the welding process is further ensured, and the welding quality can be better improved. And meanwhile, a driving mode of a single walking driving piece is adopted, control hardware and programs are simplified, and the production cost and the development time are reduced.

The invention relates to the technical field of mechanical arms, and discloses a self-adaptive rapid assembly system and method for a laser radar, and the system comprises an acquisition module, a mechanical arm is provided with a clamping claw and a welding head; the control module is electrically connected with the acquisition module and the mechanical arm, and the control module comprises an acquisition unit which controls the mechanical arm to place a shell on a working plane and controls the mechanical arm to press a crimping stud into a crimping hole site; the judgment unit collects the image of the crimped shell to judge whether the plane is flush or not; when it is judged that the plane is flush, the processing unit controls the mechanical arm to clamp the mainboard module, and the crimping stud penetrates through a mounting hole position of the mainboard module; determining the amount of soldering tin, and controlling the welding head to fix the mainboard module; the adjusting unit collects image data of the welding position to judge whether welding defects exist or not, and when the defects exist, the welding head is controlled to conduct repair welding. Through the acquisition module, the mechanical arm and the control module, automation of laser radar assembly is realized, and the assembly precision is improved.

The present invention provides a negative electrode column and a preparation method thereof, and a secondary battery, belonging to the field of battery technology. The preparation method of the negative electrode column of the present invention comprises the following steps: coating a solder flux on the surface of a soldering sheet to obtain a preformed soldering sheet, assembling the preformed soldering sheet between a copper plate and an aluminum column, and performing high-frequency induction brazing on the copper plate and the aluminum column to form a negative electrode column. The present invention improves the yield rate and solder joint strength of the negative electrode column by controlling the composition and coating amount of the solder flux.

The invention provides a copper bar welding fixing tool and copper bar welding equipment, and relates to the technical field of copper bar welding. The copper bar welding fixing tool and the copper bar welding equipment comprise an operation table, the upper end of the operation table is fixedly connected with a supporting column, the outer surface of the supporting column is connected with a shielding belt, and the upper surface of the operation table is fixedly connected with a welding base. According to the copper bar welding fixing tool and the copper bar welding equipment, an electric telescopic rod is arranged to drive a dirt removing mechanism to ascend and descend, so that a stand column can ascend to be close to a welding seam, a wiping and grinding wire is arranged at the top end of the stand column, and a cleaning motor drives a square shaft to rotate so that the stand column can be driven to rotate; the welding surface of the copper bar can be polished and wiped, so that oil stains and oxidation films on the surface of the copper bar can be conveniently removed, brazing filler metal can be connected with the surface of the copper bar more firmly, the effect of removing the oil stains and the oxidation layers on the surface of the copper bar is achieved, and the problem that the welding position is not firm due to the oil stains and the oxidation layers on the surface of the copper bar is solved.

The invention discloses an anti-deviation circuit board chip welding device and method, and relates to the field of chip welding, the anti-deviation circuit board chip welding device comprises a welding workbench, a welding robot is installed on the welding workbench, a welding positioning groove is formed in the welding workbench, a hot melting mechanism is arranged on the welding workbench, and the hot melting mechanism comprises a horizontal sliding seat, a vertical plate and a hot melting plate; the horizontal sliding seat is arranged on the welding workbench in a sliding mode, the sliding direction of the horizontal sliding seat is parallel to the welding positioning groove, the vertical plate is fixed to the horizontal sliding seat, the hot melting plate is arranged on the vertical plate in a sliding mode, a rectangular groove is formed in the middle of the hot melting plate in a penetrating mode, and a plurality of hot fuses are arranged on the two opposite inner walls of the rectangular groove at equal intervals in the horizontal direction; in the welding process, tin is plated on the chip welding holes of the circuit board through the welding robot, the thermal fuse is located between every two adjacent welding holes and used for enabling tin to be in a hot melting state, it is guaranteed that the chip cannot move in the welding process, the welding reject ratio is greatly reduced, and the welding quality is improved.

The invention provides an automatic tin soldering machine with a tin wire feeding structure, and belongs to the technical field of tin wire feeding of tin soldering machines, the automatic tin soldering machine comprises an operation table, a tin wire body, a welding gun, a tin wire reel and a tin feeding head, and further comprises a wire feeding wiping assembly, a detection assembly and an induction cleaning assembly; the sponge block on the wire feeding wheel cleans rosin in time, the rotating directions of the wire feeding wheel and the fan-shaped block are opposite, the cleaning efficiency is improved, rosin reattachment and splashing are prevented, smooth wire feeding and cleaning of a working area are guaranteed, and the welding quality is improved. The detection assembly monitors in real time through a rotating speed sensor, an alarm can be triggered in time when wire blockage occurs, operators are reminded of handling, and welding work is prevented from being affected; the induction cleaning assembly automatically triggers cleaning through a pressure sensor, and the automation degree is improved; multi-angle cleaning is achieved by controlling the gas flow direction, and dead angles are reduced; and in cooperation with vibration of the fixing balls and fine teeth of the wire feeding wheel, the cleaning effect is enhanced, cleanliness of the wire feeding wheel and the sponge block is guaranteed, and smooth welding is facilitated.

The invention discloses wave-soldering equipment based on visual inspection, and relates to the technical field of wave-soldering equipment, the wave-soldering equipment comprises a case, a clamping unit, a spraying unit, a preheating unit, a welding unit and an adjusting unit, the case is used for installing and fixing the clamping unit, the spraying unit, the preheating unit, the welding unit and the adjusting unit, the clamping unit is used for clamping a PCB, and the adjusting unit is used for adjusting the spraying unit. The spraying unit is used for coating soldering flux, the preheating unit is used for evaporating moisture in the soldering flux, the welding unit is used for welding pins of the PCB, the adjusting unit is used for adjusting wave crests, the PCB is clamped through the clamping unit in the transportation process of the PCB, and after the soldering flux is sprayed to the PCB through the spraying unit, the PCB is conveyed to the welding unit through the adjusting unit. The preheating unit evaporates moisture in the soldering flux, the PCB is welded through the welding unit, and the wave crest height is adjusted through the adjusting unit during welding, so that the welding quality is improved.

The invention relates to the technical field of dissimilar material connection, in particular to a non-equilibrium brazing connection method for graphene and aluminum alloy. The method comprises the steps that firstly, a high-thermal-conductivity graphene block, a rapid heating element, a to-be-welded face of aluminum alloy and brazing filler metal foil are cleaned and then dried; secondly, the materials are assembled into a to-be-brazed assembly according to the assembling mode of aluminum alloy / brazing filler metal foil / rapid heating element / brazing filler metal foil / graphene block / brazing filler metal foil / rapid heating element / brazing filler metal foil / aluminum alloy, and the distance between the rapid heating element and the to-be-brazed face of the graphene block is smaller than the distance between the rapid heating element and the aluminum alloy on the same side; and thirdly, the assembly to be brazed is heated in a special heating mode so as to ensure that non-equilibrium temperature fields can be formed on the two sides of the connector, after heat preservation is finished, the connector is naturally cooled to the room temperature, and brazing is completed. By the adoption of the scheme, the technical problem of high residual stress concentration of a heterogeneous joint in welding of an existing graphene material and aluminum alloy can be solved.

To provide dual wire welding or an additive manufacturing contact tip and a diffuser.SOLUTION: A welding or additive manufacturing contact tip includes an electrically-conductive body extending from a proximal end of the body to a distal end of the body. The body forms a first bore terminating at a first exit orifice at a distal end face of the body, and a second bore terminating at a second exit orifice at the distal end face of the body. The first and second exit orifices are separated from each other by a distance configured to facilitate formation of a bridge droplet between a first wire electrode delivered through the first bore and a second wire electrode delivered through the second bore during a deposition operation.SELECTED DRAWING: Figure 1

The invention relates to the technical field of welding, in particular to a solder ball preparation device for soft soldering, which comprises a ball storage tank with a mounting seat higher than a solder ball separation device, a solder ball conveying shaft is hermetically and slidably connected into the ball storage tank, and a solder ball conveying channel is formed in the center of the solder ball conveying shaft. The lower end of the solder ball conveying shaft is fixedly and hermetically connected with a ball falling hose, one end, far away from the solder ball conveying shaft, of the ball falling hose is fixedly and hermetically connected with an air pipe connecting sleeve, and the air pipe connecting sleeve is fixedly connected to the solder ball separating device and communicated with a ball storage groove of the solder ball separating device. Through the synergistic effect of multiple structures, automatic and continuous supply of the solder balls is finally achieved, the problem that the storage capacity of a ball storage bin in an existing solder ball separation device is limited is solved, high efficiency and stability of feeding of the solder balls large in size in the long-time welding process are guaranteed, and the requirement of soft soldering for solder ball supply is met.

A wave soldering machine is configured to perform a wave soldering operation on a printed circuit board. The wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave. The wave soldering nozzle assembly is configured to control a width of the solder wave through the solder distribution baffle to produce a maximum width solder wave and a minimum width solder wave.

The invention discloses a tin wire feeding mechanism for sawtooth spot welding. The tin wire feeding mechanism comprises a mounting base; the tin inlet guide seat, the first conveying wheel set, the middle guide seat, the second conveying wheel set and the tin outlet guide seat are arranged on the mounting base from top to bottom, and the first conveying wheel set and the second conveying wheel set are meshed and linked through a gear shaft; the discharging frame is positioned on the upper side of the mounting base; wherein the first conveying wheel set comprises a first driving wheel meshed with the upper portion of the gear shaft; the first driven wheel is used for clamping and conveying the tin wire corresponding to the first driving wheel; wherein the first driven wheel is in shaft connection with an indexing turntable rotating along with the first driven wheel, and the indexing turntable is provided with eight notches formed in an array mode; and the photoelectric sensors are mounted on two sides of the indexing turntable through brackets and correspond to the notches. Tin wires are discharged through the tin inlet guide seat, the first conveying wheel set is matched with the second conveying wheel set, the tin wires are continuously output through the tin outlet guide seat, meanwhile, the indexing turntable induces the tin outlet length, discharging is accurately positioned, and the trouble that tin wire feeding is difficult to control in the past is avoided.

The utility model provides a charge coupled device (CCD) tin wire soldering machine, which relates to the technical field of tin wire soldering machines and comprises a machine body, and a support base is fixedly mounted at the bottom end of the machine body. By arranging the machine body, the supporting base, the working platform, the drawer, the lamplight plate, the illuminating lamp, the camera, the lead screw module, the base plate, the Y-direction movement shaft, the Z-direction lead screw, the Z-direction servo motor, the upper silver guide rail and the like, when the equipment is used, manual labor can be effectively solved, manual operation and certain technical errors are reduced, and the production efficiency is improved. And meanwhile, by arranging the fixing plate, the front arm and other structures, any position needing to be welded can be adjusted, and automation and intellectualization are achieved in the welding process. And meanwhile, the welding has the functions of flexible and diversified tin soldering modes, spot welding, drag welding and the like so as to adapt to various high, medium and low-difficulty tin soldering operations, so that the welding quality is improved.

The invention discloses an attaching machine, which comprises a wire feeding mechanism used for feeding, feeding, pulling, cutting and connecting multiple groups of cables; the tray conveying mechanism is used for conveying trays; the circular conveying mechanism comprises a jig device which moves circularly, the tray conveying mechanism conveys trays to the jig device, and the cable conveying mechanism conveys a plurality of groups of cables to the trays on the jig device for cable arrangement; the rubberizing mechanism is used for adhering and bonding the plurality of groups of cables on the tray, so that the plurality of groups of cables are adhered and fixed on the tray; and the discharging mechanism is used for discharging the trays subjected to cable attaching and fixing. The cable feeding mechanism is used for feeding, feeding, pulling, cutting and connecting multiple sets of cables and conveying the multiple sets of cables to a tray on the circulating conveying mechanism, the tray feeding mechanism conveys the tray to the circulating conveying mechanism, cable arrangement is completed on the circulating conveying mechanism, adhesive paper is conveyed through the adhesive tape pasting mechanism, adhesive tape pasting is completed at the same time, and the cable feeding mechanism is used for feeding, feeding, pulling, cutting and connecting the multiple sets of cables. And finally, discharging is conducted through the discharging mechanism, full automation is achieved in the whole process, manual participation is not needed, and efficiency is improved.

The invention discloses an electronic component processing support leg crimping device, and relates to the technical field of circuit board production, the electronic component processing support leg crimping device comprises a base and a support mounted on the top of the base, and further comprises a rotary table, and the top of the rotary table is provided with a plurality of positioning grooves; the preheating mechanism is used for preheating the chip mounting position of the circuit board; the tin coating mechanism is used for coating tin paste at a chip mounting position along a rectangular track; the positioning and crimping mechanism is used for positioning, pressing and welding the chip; the pin correction mechanism is used for correcting pins on the chip when the chip is positioned; according to the electronic component processing supporting foot crimping device, firstly, center positioning is automatically carried out on a chip, then, the bottom end of a welding air pipe is pressed down on the top of the chip, the problem that a chip pin tilts and the circuit connection area of a circuit board is small is solved, the chip installation quality is guaranteed, and through straightening the pin, the production efficiency is improved. And the problem that the pins are bent and cannot be accurately butted with the circuit on the circuit board is solved.

The invention relates to low-temperature lead-free formic acid solder paste and a preparation method and application thereof, and belongs to the technical field of welding materials. The low-temperature lead-free formic acid solder paste is prepared from the following raw materials in percentage by mass: 85-90% of alloy welding powder and 10-15% of scaling powder, the soldering flux comprises the following raw materials in parts by weight: 10-15 parts of an activating agent, 1-5 parts of a rheological agent, 20-30 parts of an organic solvent, 20-30 parts of a paste forming agent, 3-5 parts of a surfactant and 0.1-0.5 part of a corrosion inhibitor, the activating agent is a composition of hydrogenated dimer acid, glycollic acid and ethylenediaminetetraacetic acid, and the organic solvent is a composition of tetrahydrofurfuryl alcohol and cyclohexanol. The paste forming agent is polyethylene glycol. The solder paste is suitable for a low-temperature welding process at the temperature of 120-150 DEG C, welding energy consumption can be reduced, the residual rate after welding is low, follow-up cleaning is not needed, the production environment can be improved, and the production cost can be reduced.

The utility model discloses a wire arranging device for full-automatic continuous welding, which belongs to the technical field of automation and comprises a bottom plate, a wire harness feeding transmission device for feeding wire harnesses is mounted on the upper end face of the bottom plate, and a continuous wire arranging component for arranging the wire harnesses is mounted on the upper end face of the bottom plate; the wire harness transferring and pushing assembly is used for transferring wire harnesses on the wire harness feeding transmission device to the continuous wire arranging assembly, and the wire harness transferring and pushing assembly is further used for pushing the wire harnesses arranged on the continuous wire arranging assembly to the tinning station and the welding station; the continuous wire arranging assembly comprises a plurality of wire arranging assemblies and a second conveying belt assembly, the wire arranging assemblies are installed on the outer wall of a conveying belt of the second conveying belt assembly at equal intervals, a main body support of the second conveying belt assembly is fixedly connected with the upper end face of the bottom plate, and a motor is fixedly installed on the main body support of the second conveying belt assembly; by means of the mode, continuous feeding and discharging of the wire harnesses are achieved.

A method for normalizing the solder interconnects (e.g., normalizing the height of the solder ball interconnects) in a circuit package module (e.g., dual-sided mold grid array package module) after removal from a test board includes receiving in a fixture the circuit package module upside down and removably coupling a stencil to the fixture and over the circuit package module. The stencil has a pattern of apertures that coincides with the pattern of solder interconnects of the circuit package module. The method also includes applying solder paste over the stencil to pass through the apertures to add solder paste to the solder interconnects. The method also includes removing the stencil from over the fixture, and removing the circuit package module from the fixture. The circuit package module can be heated to reflow the solder interconnects with the added solder paste.

The invention discloses AgCuSnTi-based composite brazing filler metal. Raw materials of the AgCuSnTi-based composite brazing filler metal comprise alloy powder and yttrium tungstate powder. The volume of the yttrium tungstate powder accounts for 0.5-5% of the total volume of the powder; and the alloy powder comprises the following raw materials in percentage by weight: 8.5 to 9.5 percent of Sn, 1.2 to 1.5 percent of TiH2 and 89.1 to 90.3 percent of AgCu eutectic powder. The invention further discloses a preparation method of the AgCuSnTi-based composite brazing filler metal. The invention further discloses the AgCuSnTi based composite brazing filler metal soldering paste. The invention further discloses the application of the AgCuSnTi-based composite brazing filler metal and the application of the AgCuSnTi-based composite brazing filler metal soldering paste in welding of diamond and copper. The invention further discloses a diamond and copper welding method. According to the brazing filler metal and the soldering paste, the residual stress of a diamond and copper welding joint can be greatly relieved, and the service stability of a welding assembly is improved.

The invention relates to the technical field of continuous wave soldering, in particular to selective continuous wave soldering equipment based on electronic components, which comprises a base, a conveying unit, a soldering unit, a guide component and an auxiliary component. According to the welding device, firstly, the upper die base and the lower die base are closed and locked, a welding area is accurately opposite to the nozzle by means of the guide assembly, the welding quality and welding efficiency of follow-up welding are ensured, and batch rapid production is facilitated; the upper die base and the lower die base serve as first-stage covering protection, and the guide assembly limits the height of the nozzle; the tin solution is cooled before welding to form second-stage temperature protection, then third-stage protection is formed by means of nitrogen filling in in the welding process, fourth-stage protection is formed through preheating and cooling protection in the auxiliary assembly, in conclusion, through the four-stage temperature protection, the problem that components are damaged due to high temperature is solved, and the welding quality is improved.

The utility model discloses a hinge type roller wire feeding mechanism which comprises a wire feeding mechanism body, the wire feeding mechanism body comprises an installation support and two rows of wire feeding rollers rotationally arranged in the installation support, the radial side walls of the two rows of wire feeding rollers directly face each other, and a gap channel is formed between the two rows of wire feeding rollers. The gap channel is used for penetration of a welding wire; a ball head is arranged at one end of the installation support, a ball socket matched with the ball head is formed in the other end of the installation support, a first channel used for allowing a welding wire to penetrate through is formed in the ball head, a second channel used for allowing the welding wire to penetrate through is formed in the ball socket, and the first channel and the second channel are both communicated with the gap channel. The wire feeding mechanism has the advantages that the flexibility of the wire feeding mechanism is improved, and the problems that friction between a welding wire and the wire feeding wheel is large, and the welding wire is prone to deformation and galling are solved.

The application belongs to the technical field of laser welding, and particularly relates to a laser wire filling welding device and a laser wire filling welding method. The laser wire filling welding device preheats a welding wire to a predetermined temperature, reduces a temperature threshold span between the welding wire and metal material, changes a temperature field formed by a welding molten pool from violent to gentle, forms regular stirring, avoids excessive free stirring of the molten pool, further reduces metal splashing during welding, and improves welding quality.

The invention relates to the technical field of vacuum welding, and discloses high-precision automatic mechanical welding equipment in a vacuum environment, which comprises an equipment shell, a supporting seat is arranged at the center position of the bottom of the equipment shell, a static tool seat is fixed at the upper end of the supporting seat, a movable tool seat is movably arranged right above the static tool seat, and the movable tool seat is movably arranged right above the static tool seat. A lead screw is rotationally arranged at the upper end of the edge of the static tool seat, a lead screw thread is arranged in the middle of the lead screw, the lower end of the lead screw is fixed to the inner layer of the static tool seat through a first bearing seat, and the upper end of the lead screw is fixed to the top of the equipment shell through a first bearing seat. A third servo motor is started, through a series of transmission, a coaxial walking gear is driven to move on a gear rail, the whole welding feeding seat is driven to do uniform-speed circular motion around an annular rail, accordingly, a welding flux guide pipe is made to evenly conduct injection welding along the outer edge of a welding seam by a circle, the uniformity is higher, the welding quality is improved, and the welding efficiency is improved. And automatic feeding is achieved, and time and labor are saved.

The utility model discloses a device for orderly arranging abrasive particles of a curved surface brazing tool, which relates to the technical field of brazing and comprises at least one curved surface template, the longitudinal section of each curved surface template is arc-shaped, the surface of one side of each curved surface template can be matched with at least part of the surface to be processed of a base body, each curved surface template is provided with a plurality of through holes, and the through holes are communicated with the curved surface template. The symmetric surface, perpendicular to the longitudinal section of each curved surface template, of each curved surface template is a first symmetric surface, the center line of each through hole is parallel to the first symmetric surface or coplanar with the first symmetric surface, each through hole can allow abrasive particles to pass through, and the surface, used for being matched with a base body, of each curved surface template is a working surface; the working surface of each curved surface template can be adhered to the to-be-processed surface, and the working surface of each curved surface template can be separated from the to-be-processed surface. The utility model has the advantages of simple structure, simple processing procedure, high production efficiency, low manufacturing cost and good processing quality.

The welding equipment for producing the switching power supply comprises a welding mechanism, a positioning mechanism is arranged below the welding mechanism, a wire feeding mechanism and a switching power supply feeding mechanism are arranged on the two sides of the positioning mechanism respectively, and the switching power supply feeding mechanism sends the switching power supply to the positioning mechanism; the electric wire feeding mechanism conveys an electric wire to the positioning mechanism, the electric wire and a pin of the switching power supply are overlapped up and down, and the welding mechanism is used for welding and fixing the overlapped part of the pin of the switching power supply and the electric wire. By arranging the electric wire feeding mechanism and the switching power supply feeding mechanism, an electric wire and a switching power supply can be driven to be conveyed to the positioning mechanism to be automatically positioned and wait for welding of the welding mechanism, the trouble that manual positioning is needed is omitted, positioning is more accurate, the welding quality is improved, and the welding machining efficiency is improved.

A wave soldering machine is configured to perform a wave soldering operation on a printed circuit board. The wave soldering machine includes a housing and a conveyor coupled to the housing. The conveyor is configured to deliver a printed circuit board through the housing. The wave soldering machine further includes a wave soldering station coupled to the housing. The wave soldering station includes a solder pot having a reservoir of solder material, a flow duct positioned in the reservoir of the solder pot, and a wave soldering nozzle assembly coupled to the flow duct. The wave soldering nozzle assembly has a solder distribution baffle configured to create a solder wave. The wave soldering nozzle assembly is configured to control a width of the solder wave through the solder distribution baffle to produce a maximum width solder wave and a minimum width solder wave.