42results about How to "High welding consistency" patented technology

The invention discloses a soldering machine with a fine-tuning structure, comprising: a control console, an electric soldering iron electrically arranged at one end of the control console, a connecting block fixedly arranged on the electric soldering iron, a tin feeding tube fixedly connected to one end of the connecting block for guiding the tin wire, a clamping device slidably arranged on the tin feeding tube for clamping one end of the tin wire, a limiting device for limiting the position of the clamping device is arranged on the tin feeding tube, a locking device for releasing the restriction of the clamping device by the limiting device is arranged in the tin feeding tube, an elastic rope for driving the clamping device to reset is arranged on the clamping device, one end of the elastic rope passes through the locking device and is fixedly connected to the top end of the tin feeding tube; in the invention, the movement of the clamping device can be accurately controlled by the position of the convex teeth on the limiting rack, so that the quantitative supply of the tin wire can be realized during manual operation, so that the user can make fine adjustments according to actual welding needs, ensure the supply amount of the tin wire during welding is appropriate, and effectively improve the welding quality and consistency.

The invention discloses a pipeline welding butt joint device, and belongs to the technical field of hydraulic engineering pipeline welding. The pipeline butt joint mechanism is arranged at the upper end of the carrying plate and comprises a sliding rail, two axial limiting assemblies and a double-end lead screw, and the two axial limiting assemblies are symmetrically installed on the sliding rail in a sliding mode and used for clamping and axially limiting the welding end of a pipeline; the two ends of the double-end lead screw are in threaded fit with the two axial limiting assemblies correspondingly. The pipeline rotating mechanism is arranged at the upper end of the carrying plate and comprises two circumferential limiting assemblies, and the two circumferential limiting assemblies are symmetrically arranged and used for clamping and rotating the non-welding end of a pipeline; through the overall structure arrangement, stable placement of the pipeline is completed, continuous and stable rotation of the pipeline in the circumferential direction is achieved, the problems of uneven rotating speed, shaking and deviation caused by manual rotation of the pipeline are avoided, and the circumferential weld forming quality and welding consistency are remarkably improved.

The invention discloses a positioning type lithium battery welding and assembling mechanism, and relates to the technical field of lithium battery welding. Comprising a welding machine, the welding machine comprises a welding machine body, a supporting plate, a sliding block, a sliding rod and a welding arm, the supporting plate is movably arranged at the bottom of one side of the welding machine body, a positioning frame is movably arranged at the top of the supporting plate and used for arranging lithium batteries, a sliding groove is formed in the top of the welding machine body, the sliding groove and the sliding rod are arranged in a cross staggered mode, and the sliding block is arranged in the sliding groove in a sliding mode. Compared with a spot welding machine on the market in the mode that a user needs to lift a welding arm for spot welding, the spot welding machine has the advantages that spot welding position selection and spot welding operation can be achieved by moving the position of the welding arm through a grip and pressing a control switch, the user only needs to move the welding arm, the weight of the welding arm and the motor is borne through a sliding rod and a sliding block, and the spot welding operation is convenient. The labor intensity of a user is greatly reduced, meanwhile, the welding efficiency is greatly improved, shaking is avoided in the welding process, the welding is more stable, the welding consistency is high, and the use requirements of the user are met.

The embodiment of the invention provides vertical shaft steel pipe welding equipment. Relates to the technical field of penstock shaft construction. The outer side welding mechanism comprises an outer side rail, an outer side trolley and an outer side welding robot, the outer side trolley is arranged on the outer side rail and slides along the outer side rail, the outer side welding robot is arranged on the outer side trolley, and the outer side welding robot is used for welding an outer side welding seam of the steel pipe; the inner side welding mechanism comprises a telescopic frame, a hoisting frame, an inner side track, an inner side trolley and an inner side welding robot, the inner side track is arranged on the telescopic frame, the hoisting frame is connected with the telescopic frame, the inner side trolley is arranged on the inner side track and slides along the inner side track, and the inner side welding robot is arranged on the inner side trolley and slides along the inner side track. The inner side welding robot is used for welding inner side welding seams of the steel pipes; the hoisting mechanism is connected with the hoisting frame so as to drive the inner side welding mechanism to move in the vertical shaft in the axis direction of the vertical shaft. The equipment is used for achieving the effects of reducing construction risks and relieving the labor intensity of operators.

The utility model relates to the technical field of resistor processing, and discloses a resistor welding device for coil production equipment, which comprises a base, the upper surface of the base is fixedly connected with a baffle plate, the outer wall of the baffle plate is slidably connected with a bracket, and the outer wall of the bracket is fixedly connected with a servo motor. The output end of the servo motor is fixedly connected with a threaded rod, the outer wall of the fixing plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first rotating column, the outer wall of the first rotating column is fixedly connected with a rotating wheel, the outer wall of the rotating wheel is provided with a belt, and the outer wall of a second rotating column is fixedly connected with a grinding wheel. The first motor rotates to drive the first rotating column to rotate, then the rotating wheel drives the grinding wheel to rotate, the servo motor works to drive the threaded rod to rotate, then the grinding wheel is driven to move to make contact with the welding head, and therefore the effects that the conductive performance of the welding head is improved, the resistance of the welding head is reduced, and good welding contact is guaranteed are achieved.

This utility model discloses a single-station hot plate welding machine, belonging to the field of hot plate welding technology. The hot plate welding machine includes a cabinet, an upper mounting part, a lower mounting part, and a heating component. The movement of the upper and lower mounting parts is driven by first lead screws driven by first servo motors on both sides. The synchronous control of the dual motors can achieve precise synchronization of movement in opposite directions, and the lead screw drive can provide continuous and stable mold closing pressure. Compared with the traditional slide bar drive, it avoids welding gaps caused by pressure fluctuations, ensures tight contact of the workpiece welding surface, and improves welding strength and consistency. The linear slide rail with built-in ball bearings, cage, and return channel is used in conjunction with the sliding block to replace the sliding friction of the traditional slide bar. The low friction coefficient of rolling friction can significantly reduce the wear of the slide rail and the slider, avoiding the problem of precision decay caused by the thinning of the slide bar and the enlargement of the sliding hole. At the same time, the multi-directional contact design of the slide rail can limit the movement of the upper and lower mounting parts, ensuring accurate workpiece alignment during mold closing.

The application provides a battery string welding method. The battery string welding method comprises the following steps: preparing a plurality of battery pieces (1) of a same battery string; preparing at least one continuous welding strip; making the continuous welding strip sequentially contact and weld with the same surface of the plurality of battery pieces (1) through one or more continuous pulling of the continuous welding strip to form a conductive path; and completing the welding of the whole battery string; wherein the continuous welding strip is not bent during the welding process and keeps a continuous extension state after the welding is completed. The battery string welding method can reduce the problem of hidden cracks of the welding strip, avoid the risk of less welding strips, improve the welding capacity, improve the production efficiency, and improve the battery performance.

This invention discloses a long-stroke, narrow-body automatic welding torch and an automatic welding equipment for expansion joint embedded parts, belonging to the field of automatic welding technology. The automatic welding torch includes a long, narrow housing, a drive mechanism, a transmission mechanism, a welding torch execution component, and a position detection component. These components are arranged side-by-side along the width of the housing, achieving a narrow body and long stroke design. Combined with an insulation structure and precise position detection, it ensures operational safety and positioning accuracy. The welding equipment includes a welding device, an automatic feeding mechanism, a discharging component, and a stud feeding mechanism. The welding device is equipped with at least two of the aforementioned automatic welding torches. The feeding, stud feeding, and discharging mechanisms respectively achieve stable transport of the embedded parts by their own weight, isolated lifting of individual studs, and automatic unloading of finished products. This invention achieves fully automated operation, enabling simultaneous stud picking and time-sharing welding with multiple torches. It solves the problems of low efficiency, poor quality, and material jamming / deviation associated with traditional equipment, improving welding efficiency and product consistency, and is suitable for large-scale mass production.

This utility model relates to the field of welding equipment technology, specifically to an ultrasonic battery frame welding device with multiple welding heads. It includes a frame, a top plate connected to the upper part of the frame, and several cylinders mounted on the top plate. A connecting frame is fixedly connected to each cylinder, and a mounting box is driven to the lower end of the piston rod of each cylinder. A mounting ring is fixedly connected to the lower part of the mounting box. This utility model uses multiple cylinders to drive multiple welding heads to work synchronously, enabling simultaneous welding of different parts of the new energy vehicle battery frame. This significantly shortens the welding cycle, improves production efficiency, and is suitable for large-scale mass production. Through the clutch control of the lifting insulating rod and the power socket, the welding head only activates the cooling element when not welding, avoiding energy loss during the welding process and effectively reducing the temperature of the welding head.

The invention discloses a welding device, belongs to the technical field of crown spring welding equipment, and particularly relates to a cable crown spring welding device which comprises a base, a bearing frame, a control system, a displayer, a pedal controller, a welding assembly, a wire guide seat and a tool assembly. The supporting frame is fixedly installed on the base, the control system and the displayer are installed on the supporting frame, the pedal controller is located on the lower portion of the base, the welding assembly is installed on the supporting frame, the wire guide seat is installed on the base, and the tool assembly is installed on the base. The control system is connected with the welding assembly, the displayer and the pedal controller at the same time, and the tool clamp can fix the crown spring and replace a handheld part. And meanwhile, the problems of overlarge welding spots and the like are avoided.

The present application relates to the technical field of weld positioning, and particularly relates to a weld positioning and tracking method and system, comprising the following steps: S01, a small line laser sensor is used to project a laser line to a welding area on a workpiece surface, and multiple intersection point data are collected at a preset frequency, wherein the intersection point data comprises intersection point coordinates, reflection time and reflection intensity; S02, intersection point coordinates belonging to the weld area are selected based on the reflection time and the reflection intensity, and are marked as welding point coordinates; and S03, the real-time collected welding point coordinates are compared with a preset path, and it is determined whether a welding path adjustment instruction is generated. The weld positioning and tracking method provided by the present application can realize high-precision positioning of a weld even in a harsh welding environment by using a small line laser sensor in combination with an intelligent processing algorithm, and welding quality and consistency are improved.

The utility model discloses a welding device and a battery piece series welding machine, and belongs to the field of battery string manufacturing. The welding device comprises a welding lamp panel arranged above a battery string welding area, the welding lamp panel comprises a plurality of welding lamp modules with independent welding power, and lamp beads are distributed on each welding lamp module. The welding lamp panel is formed by the multiple welding lamp modules with the independent welding power, the welding power of each welding lamp module can be flexibly adjusted according to the distribution condition of the welding temperature, it is ensured that a to-be-welded part is evenly heated, and the welding consistency of the whole grid line of a battery piece is good.

This utility model relates to the technical field of shear stud welding equipment, and discloses a shear stud welding device for steel box girders. It includes a fixed block, a support frame fixedly connected to the lower surface of the fixed block, and a first hydraulic cylinder fixedly connected inside both the fixed block and the support frame. A push block is fixedly connected to the output end of the first hydraulic cylinder. An L-shaped block is slidably connected to the outer wall of the push block, and a limit rail is rotatably connected inside the L-shaped block. A moving block is slidably connected to the inner wall of the limit rail, and a clamping block is fixedly connected to the lower surface of the moving block. A welding torch is clamped to the outer wall of the clamping block. In this utility model, activating the first hydraulic cylinder, through the mutual cooperation between the fixed block, support frame, push block, L-shaped block, limit rail, moving block, clamping block, and welding torch, ensures that the welding torch and workpiece maintain precise stability, guarantees welding perpendicularity and penetration consistency, effectively suppresses vibration deviation, and improves the stability of the welding process and the yield rate of finished products.

The invention discloses a machining method and system based on UG NX software electron beam welding complex path numerical control programming, and relates to the field of electron beam welding. The problems that in existing electronic welding operation, an operator needs to have the high technical level and rich experience, and the technical requirement for the operator is strict are solved. The method comprises the steps that S1, a welding track is generated through a linear cutting module of UG software; s2, a program generated by UG is converted into a format meeting the requirement of electron beam welding equipment through a post-processing process; and S3, after the numerical control program is generated, the numerical control program is stored and used in actual welding. The method is applied to the fields of aerospace, chemical engineering, metallurgy and the like.

The invention discloses an automatic titanium stud feeding device and method, and relates to the technical field of titanium anode product production. In order to solve the technical problems existing in the prior art that the feeding efficiency is low, the welding fluency is influenced and the time is wasted, which are generally caused by the precision problem of a manipulator, the low manual operation efficiency and the positioning problem of the titanium stud, of the existing feeding mode of the upright post type titanium stud. According to the technical scheme, the automatic titanium stud feeding module comprises a material box used for containing and providing a titanium stud; a plurality of grooves are formed in the rotating mechanism, and the rotating mechanism is used for containing and conveying the titanium studs in the rotating process; and the slide way is connected with the rotating mechanism and used for receiving the titanium stud conveyed by the groove, and the slide way is provided with a structure used for adjusting the posture of the titanium stud, so that the titanium stud is converted into a vertical state from a horizontal state. A robot arm; the mechanical arm is used for clamping the titanium stud passing through the sliding way and conveying the titanium stud to the welding device. The titanium stud feeding device is suitable for titanium stud feeding work in the titanium stud and titanium plate welding process.

The application belongs to the technical field of component welding, and particularly relates to a motor commutator and wire head continuous welding device, which comprises a base, a stand, a top plate and a welding tool, the stand is fixedly connected to the top of the base, the top plate is fixedly connected to the top of the stand, the bottom of the top plate is provided with a reciprocating lifting mechanism, the welding tool is arranged at the bottom of the reciprocating lifting mechanism, the top of one side of the base close to the welding tool is fixedly connected with a processing groove, and the top of the other side of the base is fixedly connected with a mounting groove. In the application, the push roller, the pull roller, the first travel switch and the second travel switch are cooperatively matched to ensure the automatic process of feeding, clamping, processing and discharging of the workpiece, significantly improve the production efficiency, reduce manual intervention, realize the automatic sorting and circulation of the workpiece after welding through the integrated design of the conveying groove and the discharging slope, facilitate the connection of the subsequent quality inspection link, and optimize the production process.

The invention relates to the technical field of seal head processing, in particular to an integrated full-automatic assembly line for carrying, scanning, positioning and welding seal heads, which comprises two groups of identical processing parts for transporting, positioning, scanning and welding the seal heads, and each group of processing part comprises a first conveying frame and a second conveying frame which are respectively used for conveying the seal heads and accessories on the seal heads; the material frame is arranged between the first conveying frame and the second conveying frame and used for placing machining accessories; the two groups of positioning tools are symmetrically distributed between the first conveying frame and the second conveying frame and are used for clamping and positioning the end socket; the grabbing robot is arranged between the two sets of positioning tools and used for taking and placing the end socket machining accessories; the material claw is mounted on the grabbing robot and is used for carrying out grabbing work; the industrial scanning camera is mounted on the grabbing robot and is used for scanning; and the two groups of welding robots are respectively arranged on one sides of the two groups of positioning tools and are used for carrying out welding work.

This utility model discloses a solder mask opening structure for surface mount components, relating to the field of printed circuit board design technology. The solder mask opening structure for surface mount components includes a printed circuit board, which comprises a solder mask layer and a metal layer. A solder mask opening is provided on the solder mask layer. The metal layer is connected to the solder mask layer, and a first pad and a second pad are provided on the side of the metal layer facing the solder mask layer. The technical solution of this utility model fully considers the characteristics of small pad spacing and tiny solder shoulder size of 01005 surface mount components. By eliminating the solder mask bridge between the first and second pads, the first and second pads are fully exposed within the solder mask opening. Furthermore, by controlling the reasonable gap between the outer walls of the first and second pads and the inner wall of the solder mask opening, the solder paste printing and soldering process is optimized, fundamentally solving common problems such as solder balls, tombstoning, and cold solder joints in the SMT soldering process of 01005 surface mount components.

This utility model discloses a stacked battery cell, including a cell body, which includes positive and negative electrode sheets stacked alternately, with a separator between the positive and negative electrode sheets. Each positive electrode sheet has a positive electrode tab, and each positive electrode tab forms at least two sets of positive electrode tab groups. These sets of positive electrode tabs are spaced apart along the length of the positive electrode sheet. The free ends of the positive electrode tab groups are welded to form welding ends, and the spacing between the welding ends of each positive electrode tab group in the stacking direction does not exceed 1 mm. The negative electrode sheet has a negative electrode tab. This stacked battery cell divides the positive electrode tabs into multiple positive electrode tab groups, significantly reducing the number of positive electrode tabs that need to be welded within the same positive electrode tab group, thereby reducing the risk of incomplete soldering during the welding process. Furthermore, the thickness and position of each positive electrode tab group in the stacking direction of the cell body are basically the same; therefore, each positive electrode tab group can be welded in a single welding step, improving welding quality and consistency.

The present application relates to a kind of drift tube multiple drift ring assembly vertical stereoscopic welding tool and welding method, belong to hybrid microcircuit manufacturing technical field.It mainly through the positioning fixture of combined use, multiple drift ring positioning tool and side welding positioning piece, and utilize ladder temperature solder, first using high temperature solder to carry out the frame welding of two-way three faces, then using multiple drift ring positioning tool, using low temperature solder is welded to the bottom of all drift ring assembly and frame, finally utilize side welding positioning piece to carry out the welding of two welding points between drift ring assembly and upper side, solve multiple drift ring assembly simultaneous positioning and welding problem, greatly improve the efficiency and consistency of welding.

The conveyor rack welding platform comprises a workbench and stand column supports arranged on the periphery of the workbench, a connecting supporting plate is arranged at the upper ends of the stand column supports, the connecting supporting plate is connected with the workbench through fasteners, a groove is formed in the workbench, a material supporting piece is arranged in the groove in a sliding mode, and the material supporting piece is connected with the workbench through fasteners. A connecting lug plate is arranged on a side plate of the material supporting piece, the connecting lug plate is connected with a lead screw driving base arranged on the upper surface of the workbench, the material supporting piece is in linkage with the lead screw driving base through the connecting lug plate, and high-precision position adjustment can be achieved; the rotating directions of the two lead screws are opposite, so that synchronous and symmetrical movement of the material supporting pieces on the two sides is ensured, workpieces with different widths are quickly adapted, stress is uniform, jamming or deviation is avoided, the problems that a traditional fixed welding platform is inconvenient to adjust and large in positioning error are solved, the welding platform is suitable for batch welding of workpieces of multiple specifications, and production efficiency and welding consistency are greatly improved.

The invention relates to a special-shaped floating strip self-adaptive pressure welding fuse machine which comprises a fuse machine body, a welding mechanism is arranged in the fuse machine body, and an auxiliary limiting mechanism is arranged at the top of the fuse machine body. According to the special-shaped floating strip hot melting machine, a matching structure of the welding mechanism and the auxiliary limiting mechanism is arranged on the hot melting machine body, so that the special-shaped floating strip body can obtain a stable and reliable multiple positioning effect in the welding process, and a second push rod drives a limiting baffle to vertically limit the outer side of a placement table; according to the special-shaped floating strip welding device, the top end of the special-shaped floating strip body is fixed in cooperation with the suction cup in an adsorption mode, displacement and shaking of the special-shaped floating strip body can be effectively limited before welding, and therefore the influence of manual placing errors on the welding quality is reduced; the electric push rod can conduct self-adaptive pressing according to the actual position of the special-shaped floating strip body, and the problem that adsorption is not firm or excessive pressing is caused by height or position deviation is solved.

The application discloses a production system of a negative pole post and relates to the technical field of negative pole posts, which comprises a first carrier for supporting a copper sheet, a second carrier for supporting an aluminum post, an acting piece for heating the copper sheet, a driving source for driving the second carrier to move the aluminum post towards the copper sheet, so that the aluminum post and the copper sheet are in contact and are pressed together to form a negative pole post blank, a stamping and straightening composite mechanism for straightening the processed negative pole post blank, a tensile test tool and / or a tear test tool for testing the straightened negative pole post blank. The application integrates the supporting, heating, pressing, straightening and testing processes through the integration of various components, and a complete negative pole post automatic production system is constructed, so that the negative pole post can be produced on a large scale and economically.

The invention discloses a pressure gauge movement welding device, and belongs to the technical field of pressure gauge production and welding. The device mainly comprises a workbench, a main shaft seat is fixedly installed in the center of the top face of the workbench, a rotating disc used for containing the C-shaped bourdon tube is rotationally connected to a shaft rod of the main shaft seat, and a positioning assembly used for controlling the angle of the rotating disc to be fixed after the rotating disc rotates is fixedly installed on the bottom face of the rotating disc. An intermittent adjusting assembly used for adjusting the rotating disc to rotate by a specified angle is fixedly installed on the bottom face of the positioning assembly through screws, clamps used for clamping the C-shaped bourdon tube are installed on the circle of the top face of the rotating disc at equal angles, and through the design of the clamps and the automatic rotating disc, the welding precision and consistency are remarkably improved, the welding defect risk is reduced, and the welding efficiency is improved. Compared with the prior art, operation procedures are simplified, dependence on manpower is reduced, then production efficiency is improved, work safety is improved, meanwhile, the flexible design of equipment can adapt to diversified production requirements, and therefore higher economic value is created for enterprises.

The invention discloses rotary core welding equipment for capacitor production and processing, and relates to the technical field of rotary core welding engineering.The rotary core welding equipment for capacitor production and processing comprises a fixed frame and an electric appliance chip, and an electric push rod is fixedly installed above the frame; a sleeving cylinder I is fixedly mounted on the circumferential surface of the output end of the electric push rod; the clamping and positioning device comprises a first L-shaped plate, a first inclined block, a supporting plate, a supporting rod, a clamping plate, a square plate, a first connecting block, a first connecting rod, a first concave plate, a first U-shaped plate, a first protruding block, a second inclined block, a first pushing block, a second connecting block, a semi-fluted disc and a first telescopic elastic rod. Welding efficiency is improved, manual intervention is reduced, welding quality is ensured, and labor cost and production cost are saved.

The utility model relates to the technical field of bonding pads, in particular to a PCB bonding pad convenient for tin melting, which comprises a substrate, the substrate is provided with a bonding pad area, the bonding pad area is provided with a plurality of welding holes, the plurality of welding holes are internally provided with concave inclined planes, the outer diameter edge of each welding hole is provided with a raised blocking ring and is fixedly connected to the bonding pad area, the welding holes are distributed at intervals along the periphery of the edge of the bonding pad area, and the inclined planes are arranged on the bonding pad area. A cross flower groove is formed in the inclined face of the welding hole, heat dissipation holes are formed in the periphery of the welding hole, and separation strips are arranged between the welding hole and the heat dissipation holes, the welding pad is simple in design and easy to use, stable and reliable welding work can be completed without complex welding operation when the welding pad is used, and the welding pad is particularly suitable for being used by people who are not familiar with welding operation.

The application relates to the technical field of dental tools, and discloses an intelligent temperature control welding device for brazing of a dental tool, which comprises a left clamping assembly and a right temperature control assembly. The left clamping assembly comprises a sliding plate, a fixed gas sealing cover is fixed on the top right side of the sliding plate through bolts, a clamping table is arranged on the inner side of the fixed gas sealing cover, the clamping table is fixed on the top right side of the sliding plate through bolts, a clamping groove is formed in the top of the clamping table, the clamping groove is used for clamping an orthodontic forceps, two forceps body positioning molds are fixed on the end face of the top right side of the sliding plate close to the clamping table, one end of the orthodontic forceps is arranged on the top of the forceps body positioning mold, the right temperature control assembly comprises a right table plate, arc-shaped sliding blocks are fixed around the bottom of the right table plate, a floating gas sealing cover is fixed on the top left side of the right table plate through bolts, and the device is used for welding blades or alloy heads to the orthodontic forceps through split design, so that the flexibility of the equipment is improved.

The utility model belongs to the technical field of welding equipment, and discloses induction thermocompression welding equipment for aluminum-clad steel wires, which comprises an induction coil, the induction coil is of a copper hollow structure, the inner diameter of the induction coil is 20-100mm, and the induction coil surrounds the outside of a welding area; the fixing mechanism comprises a welding clamp, the welding clamp comprises a left die and a right die which are symmetrically arranged, and the left die and the right die clamp the two ends of the steel wire correspondingly; the hydraulic device comprises a liquid transmission rod and a hydraulic control unit connected with the liquid transmission rod, and the hydraulic device drives the left mold and the right mold to move through the liquid transmission rod; and the shielding gas supply unit conveys argon to the welding area through the annular nozzle. Through the synergistic effect of segmented current regulation and control and a closed-loop hydraulic mechanism, multi-parameter collaborative optimization of heating temperature, pressure and displacement can be achieved, meanwhile, the problems that heat source control is insufficient and positioning precision is poor can be solved, and welding consistency is improved.

This utility model relates to the field of muffler processing technology, specifically to a muffler assembly welding fixture with a clamping and positioning structure. It includes a worktable, with two support plates fixedly connected to the top of the worktable. A fixed rotating mechanism is rotatably connected inside the support plates. The fixed rotating mechanism includes a second connecting column, a first fixing column fixedly connected to the outside of the second connecting column, a protective shell fixedly connected to the outside of the first fixing column, and a motor fixedly connected to the outside of the first fixing column. A gear is fixedly connected to the drive end of the motor. A transmission assembly is provided inside the protective shell, and a second gear is fixedly connected to the outside of the protective shell. This utility model achieves multi-station continuous welding by having the motor of the fixed rotating mechanism drive the gear set and the muffler to rotate, combined with the welding body sliding along a groove. This eliminates the need for frequent adjustments to the workpiece and welding torch positions, and strengthens the fixation of the muffler.

This application provides a tooling fixture for welding the duct of an axial flow fan, including a base with a fixing ring in the middle. The base and the fixing ring are connected by a slide rail, a slider is mounted on the slide rail, and an integrally formed abutment plate is provided on the top end face of the slider. A pressure block is provided on the slider for cooperating with it, and a tooling fixture for clamping the duct body is provided on the top end face of the pressure block. This utility model, by adding multiple tooling fixtures that cooperate with the abutment plate and pressure block, achieves clamping of the duct body from multiple positions, effectively preventing displacement during welding, significantly improving welding quality, and resulting in higher weld consistency.