381results about "High frequency current welding apparatus" patented technology

The invention relates to the field of photovoltaic manufacturing, in particular to a stitch welding machine and a welding method. A conveying mechanism of the stitch welding machine is used for bearing a photovoltaic panel, a welding platform is provided with a welding station used for supporting and welding a battery piece welding strip and a bus bar, and the welding platform responds to control of a controller to weld the battery piece welding strip and the bus bar; and the carrying mechanism is at least partially arranged above the conveying mechanism, and the carrying mechanism is used for separating the battery piece from the glass plate, carrying the battery piece to the welding platform, enabling a welding strip of the battery piece to be in contact with the bus bar, and carrying the welded battery piece to the conveying mechanism to be combined with the glass plate. According to the stitch welding machine, the battery piece and the glass plate can be separated, the welded battery piece and the glass plate are combined, manual separation and combination operation on the battery piece and the glass plate is not needed, the labor cost is reduced, one-stop operation of battery piece machining is achieved, the intelligent degree is high, and the production efficiency of the battery piece is effectively improved.

A method of attaching a flat flexible cable (FFC) to a plurality of terminals of an electrical connector includes a step of arranging a plurality of terminals within a connector housing, with each terminal defining a weld area adapted to be electrically connected to a conductor of the FFC. The FFC is then positioned proximate the connector housing such that the weld areas of each terminal are arranged directly adjacent a respective one of a plurality of exposed conductors of the FFC. At least the weld areas of the plurality of terminals are heated with an inductive heating source for electrically connecting the plurality of conductors of the FFC to the plurality of terminals.

A high-frequency induction melt-brazing method suitable for an anode aluminum guide rod and a steel claw comprises the steps that to-be-welded surfaces of the anode aluminum guide rod and the steel claw are pretreated, and then high-frequency electromagnetic induction heating coils are arranged around the steel claw; a layer of brazing filler metal is laid on the to-be-welded surface of the steel claw, the steel claw is heated to the first preset temperature through induction current generated by a high-frequency electromagnetic induction heating coil, the heating time is controlled to the first preset time, the brazing filler metal is molten and diffused to the to-be-welded surface of the steel claw, and a steel claw welding precursor is obtained; the anode aluminum guide rod is placed on the welding surface of the steel claw welding precursor, a layer of brazing filler metal is laid between the welding surface of the steel claw welding precursor and the anode aluminum guide rod, the induction current generated by the high-frequency electromagnetic induction heating coil is utilized again to heat the steel claw to the second preset temperature, the heating time is controlled to the second preset time, and the steel claw welding precursor is obtained. And high-frequency induction melt-brazing of the anode aluminum guide rod and the steel claw is realized.

The invention provides a diamond cutter welding machine, and belongs to the technical field of cutter welding equipment, the diamond cutter welding machine comprises a machining table and a mechanical arm, the machining table is connected with a lifting frame and a motor, the diamond cutter welding machine further comprises a knocking assembly, the knocking assembly is used for eliminating stress generated during cutter welding, and a positioning clamp is arranged in the knocking assembly; the pressing assembly is used for ensuring tight connection of the cutter; the welding tool has the beneficial effects that uniform pressure can be applied to the joint of the tool bit and the tool handle through the pressing assembly, so that the welding parts are tightly attached, the welding strength is improved, in addition, the tool bit is clamped through the knocking rod, the auxiliary positioning and supporting effects are achieved, and the welding quality is improved. And meanwhile, in the working process, the rotating shaft can drive the positioning clamp and the extrusion plate to synchronously rotate, so that the extrusion plate extrudes the ejector rod, the knocking rod can be driven to rapidly reset through the reset spring, knocking on the tool bit is achieved, the vibration effect is generated, and air holes are reduced.

The utility model belongs to the technical field of electromagnetic pulse welding, and particularly relates to a magnetic pulse welding device based on welding area maximization, a coil is arranged in a base, one surface of the base is used for arranging a flying plate and a supporting block and is provided with a through groove, and the working surface of a welding working area is in a concave arc shape and is arranged towards the through groove; the supporting block is used for supporting a workpiece with curvature, and the fixing structure is used for fixing the flying plate and the workpiece with curvature; during welding, the generatrix of the to-be-welded area of the workpiece with the curvature is parallel to the generatrix of the working face of the welding working area, and the to-be-welded area of the workpiece with the curvature coincides with the working face of the welding working area in the projection direction from the workpiece with the curvature to the welding working area. According to the utility model, the collision point position and the collision angle of the flying plate and the workpiece with curvature can be improved, the effective connection area of the welding area of the flying plate and the workpiece with curvature is increased, the excessive melting of an interface is avoided, and the strength of a welding joint is effectively improved.

The high-frequency welding machine workbench comprises a rack, a liquid storage tank is arranged on the rack, a liquid storage tank is arranged in the liquid storage tank, the top of the liquid storage tank is open, elastic clamping assemblies are arranged in the liquid storage tank, and the two elastic clamping assemblies distributed oppositely are used for clamping a heat exchanger shell; and the infusion pump is connected with the water tank and the liquid storage tank. The water cooling device is novel in structure, good in water cooling effect, economical and practical, the induction coil is not prone to being burnt, and welding quality of finished products is improved.

The invention belongs to the technical field of semiconductor processing, and particularly relates to a shell welding technology and device for semiconductor vacuum equipment manufacturing, and the technology comprises the steps: carrying out the surface cleaning of a to-be-welded region of a semiconductor vacuum equipment shell, and removing an oxidation layer, oil stains and impurities; the shell is placed on a special welding tool and fixed through a positioning pin and a clamp, and the accuracy and stability of the welding position are ensured; the welding tool and the shell are placed in a vacuum chamber, local heating is conducted on a welding area in a high-frequency induction heating or resistance heating mode, the heating temperature is controlled to be 80%-95% of the material melting point, and the heating time is controlled to be 1-10 seconds; applying constant pressure to the welding area to ensure sufficient bonding of a welding interface; and after heating is stopped, the pressure is kept, the shell is slowly cooled to the room temperature, vacuum degree testing and appearance inspection are conducted on the welded shell, it is ensured that the welding quality meets the requirement, and the effects that the high vacuum degree requirement is considered, cost is reduced, and operation is simplified are achieved.

The present invention relates to the technical field of photovoltaic preparation devices, and particularly to a cell string arrangement and welding all-in-one machine, comprising: a rack, wherein a transverse beam is provided on the rack; a cell string transmission device arranged on the rack below one end of the transverse beam; an arrangement and deviation rectification device arranged on one end of the transverse beam; a vacuum material receiving device arranged on the middle of the rack; a cell string welding device arranged on the other end of the transverse beam; and a control device arranged on the rack and comprising a control box mounted on the rack, wherein a controller and a touch display screen are mounted on the control box. The present invention combines the functions of an arrangement device and a stitch welding machine, and optimizes a transmission structure, so that the device structure is optimized and the production process is improved, thereby achieving the purposes of improving the production efficiency and reducing the device cost, and achieving the maximum economic benefit.

The utility model discloses a high-frequency welding device, which relates to the technical field of high-frequency welding and comprises two welding units capable of simultaneously welding a plurality of workpieces respectively. The electric conduction mechanism is arranged between the two welding units and used for controlling power on and power off of the two welding units; each welding unit comprises two groups of welding mechanisms, the two groups of welding mechanisms are respectively provided with welding surfaces which are oppositely distributed, and at least one of the welding surfaces is provided with a protective coating. According to the high-frequency welding machine, the welding unit and the electric conduction mechanism are arranged in a matched mode, simultaneous welding of a plurality of workpieces can be achieved while energy of the high-frequency welding machine is not increased, and the production efficiency is improved; the protective coating is arranged on the welding surface of the welding mechanism, so that ignition and shutdown caused by too short distance of the welding surface when the welding mechanism is used for welding a workpiece are prevented, and the service life of equipment is effectively prolonged.

The utility model relates to the technical field of fuse assembly, and provides a fuse threading and welding automatic assembly machine, which comprises a turntable, a clamping jaw is mounted on the turntable, the clamping jaw is used for clamping a porcelain tube, and the turntable is used for rotating the porcelain tube to different stations; the periphery of the rotating disc is sequentially provided with a porcelain tube pre-feeding mechanism. A one-end inner cap assembling mechanism; a one-end inner cap pressing mechanism; a first porcelain tube overturning mechanism; a two-end inner cap assembling mechanism; a two-end inner cap pressing mechanism; a one-end outer cap assembling mechanism; a threading mechanism; a one-end outer cap welding mechanism; a one-end semi-finished product length detection mechanism; a sand filling mechanism; a sand filling weighing mechanism; a two-end outer cap assembling mechanism; a second porcelain tube overturning mechanism; a two-end outer cap welding mechanism; a finished product length detection mechanism; the device comprises a product power-on detection mechanism, a resistor defect discharging mechanism, a secondary defect discharging mechanism and a non-defective product discharging mechanism. On the basis, the production efficiency can be improved, and meanwhile the product quality is guaranteed.

The invention relates to the technical field of copper bar welding, in particular to copper bar welding equipment which comprises a driving assembly for driving a welding head to move front and back, a lifting assembly for adjusting the height of the welding head, a cooling assembly for cooling a welded copper bar, a moving assembly for driving a water source to move and a limiting assembly for limiting the position of conveyed water flow. According to the copper bar welding device, the fixing blocks on the first rotating roller can generate an extrusion effect with the water bag in the rotating process, the extrusion effect is used for pushing cooling liquid in the water bag to flow to a specific cooling area, the cooling liquid in the water bag is pushed through pressure changes generated by extrusion, the welding position is cooled, and when the cooling liquid is sprayed to the copper bar welding position through the water bag, the cooling liquid is sprayed to the copper bar welding position through the water bag. And a large amount of steam can be generated due to mutual contact between high temperature and low temperature, and the steam is blown away through rotation of the rotating blades, so that workers are prevented from being hurt, and meanwhile, the situation that the welding condition of the copper bar cannot be observed due to steam diffusion is prevented.

A technique that can suppress welding defects is provided. An electrical resistance welded steel pipe welding management device (100) includes a pre-electrical resistance welding edge temperature detector (122) configured to detect, before electrical resistance welding, based on temperature distribution information in a thickness direction of at least one of edge portions of the open pipe, an outer surface temperature To, an inner surface temperature Ti, and a thickness center temperature Tc of the edge portion, an edge temperature difference calculator (125) configured to calculate a temperature difference ΔT between the outer surface temperature To and the inner surface temperature Ti, a V convergence point extractor (133) configured to extract, based on image information of a region including both the edge portions of the open pipe and a welding point, two straight lines converging along the edge portions to extract a V convergence point being an intersection of the two straight lines, a V convergence angle calculator (134) configured to calculate a V convergence angle θ, a narrow gap length calculator (135) configured to calculate a distance from the V convergence point to the welding point as a narrow gap length L, and a welding state determiner (141) configured to determine whether an electrical resistance welding condition is satisfactory based on information of ΔT, Tc, θ, and L.

The utility model discloses air conditioner condenser welding equipment, which relates to the technical field of condenser processing, and comprises a welding table, a high-frequency induction welding head, a translation assembly, a lifting assembly, a rotating assembly and a conveying assembly, the high-frequency induction welding head is arranged at the side end of the conveying belt on the welding table. The rotating assembly comprises a rotating motor arranged at the rear end of the high-frequency induction welding head. The translation assembly is arranged at the rear end of the rotating motor; the high-frequency induction welding head can transversely move to weld a U-shaped copper pipe on the condenser, the high-frequency induction welding head can ascend and descend through the lifting air cylinder, the high-frequency induction welding head can be suitable for welding copper pipes of different sizes on the condensers, the high-frequency induction welding head can also rotate, and the welding efficiency is improved. And the high-frequency induction welding head can be used for welding U-shaped copper pipes at various mounting angles, so that the welding is safer and more efficient.

The present application relates to a kind of automatic assembly mechanism of knife head and knife handle in scalpel production, including the assembly turntable capable of rotating along vertical center, the top of the assembly turntable is provided with two opposite knife handle assembly clamps along the edge of diameter direction two sides, the position of one of the knife handle assembly clamps is the combined station for the assembly of knife head and knife handle, the position of the other knife handle assembly clamp is the feeding station for the feeding of knife handle, and the feeding station for the feeding of knife head and knife handle after assembly, the outside of assembly turntable is provided with three-axis motion module, the free end of three-axis motion module is provided with knife head clamp, the knife head clamp is adjacent to the knife handle assembly clamp at combined station on assembly turntable, and high-frequency induction heating coil is also provided on the side of combined station upper side.In the assembly of knife head and knife handle, knife head is heated by high-frequency induction heating coil, so that knife head can be combined with knife handle to form a solid unit.

The invention relates to the technical field of metal welding, and discloses an automatic welding device for metal longitudinal welded pipe machining, which comprises a bottom plate, a high-frequency welding machine fixedly mounted on the bottom plate, a heating ring fixedly mounted on the high-frequency welding machine, a conveying device fixedly mounted on the upper side of the bottom plate, and two conveying rollers mounted on the conveying device, an installation block is fixedly installed on the upper side of the bottom plate, a base is fixedly installed on the upper side of the installation block, and a metal pipe needing to be welded is conveyed to the position between the two extrusion rollers through the conveying device, so that the metal pipe needing to be welded can penetrate through the heating ring, and heating treatment can be conducted on the metal pipe needing to be welded; then the straight seam of the metal pipe needing to be welded can be welded through extrusion of the extrusion pipe and the extrusion wheel, the vertical position of the extrusion wheel can be adjusted through back-and-forth rotation of the screw rod, meanwhile, the extrusion wheel applies pressure through the pressure of the pressure spring, and meanwhile, the situation that the metal pipe needing to be welded is deformed due to too large pressure is avoided.

The invention discloses a processing method of a conducting bar, the conducting bar and a battery pack. The method comprises the following steps: stacking a plurality of conducting strips; and welding the two ends of the plurality of conducting strips, so that first conductive connecting parts are respectively formed at the two ends of the plurality of conducting strips, and the first conductive connecting parts are used for being electrically connected with the battery. When the two first conductive connecting parts generate relative displacement, that is, when the single batteries move relatively, the conductive sheets can generate relative displacement, so that the internal stress of the deformation part of the conductive bar is reduced, and the deformation resistance is reduced, and therefore, the conductive bar provided by the invention has better flexibility.

The utility model discloses a vertical high -frequency welding machine, it includes frame, base plate, fixed jig, lifting system, movable jig and water route and circuit separation design, fixed jig is positioned on base plate through first positioning pin fast, is equipped with high -frequency heating strip and lift cylinder in the inside, movable jig is installed in the lifting module through second positioning pin, and the upper cover is adsorbed in the vacuum hole of placing cavity, the application can realize the quick positioning, heating and press bonding of upper and lower covers, and the welding efficiency and product quality are improved significantly, and the equipment operation convenience and security are ensured simultaneously, and it is applicable to the hot melt welding fixation of 5G transmitter upper and lower covers.

The invention relates to a connecting device and a connecting process for flexible pipes. The connecting device comprises a positioning comb assembly, the positioning comb assembly comprises a male positioning piece and a female positioning piece which are connected in a matched mode, the male positioning piece is provided with a male comb head, the female positioning piece is provided with a female comb head, the male comb head and the female comb head are connected in a comb-tooth-shaped matched mode, a containing cavity is formed in the matched position of the male comb head and the female comb head, and the flexible pipe is placed in the containing cavity. The end portion of the flexible pipe can be accurately positioned into a hole of the collecting pipe through the positioning comb assembly, heat generated in the welding process can be rapidly discharged through the collecting pipe connecting assembly, and the phenomena of infirm welding and stress concentration are avoided.

The present invention relates to the technical field of welding equipment, and discloses a welding device for producing elbows of pipe fittings for evaporators, comprising a welding table, a cylinder is provided on the welding table, a flat plate is installed on the piston rod of the cylinder, a high-frequency coil is provided at the bottom of the flat plate, a pair of clamping blocks are provided on the welding table, a vertical plate is provided on the welding table, a guide groove is provided on the vertical plate, a guide rod is slidably installed in the guide groove, a movable plate is provided at the end of the guide rod away from the vertical plate, a cutter head is provided on the movable plate, a scraper is provided at the bottom end of the movable plate, the movable plate is connected to the cylinder by transmission, before the high-frequency coil welds the elbow, the cutter head impacts and cuts the curled edge of the straight pipe interface, and the scraper smoothes the curled edge of the straight pipe interface. The curled portion after smoothing fits with the elbow, so after the high-frequency coil heats the connection between the straight pipe and the elbow, the melted curled portion of the straight pipe is fully fused with the elbow, making the welding more firm, thereby improving the reliability of the device.

The invention discloses a manufacturing method of a valve device, the valve device comprises a sleeve and a valve seat, the sleeve is made of stainless steel, the valve seat is made of aluminum alloy, and the manufacturing method of the valve device comprises the following steps that the sleeve is made of stainless steel; the sleeve is inserted into the mounting hole of the valve seat, so that the sleeve is in clearance fit with the first side wall part of the valve seat, the sleeve is in interference fit with the second side wall part of the valve seat, and a first assembly is formed; welding flux is arranged on the peripheral side of the sleeve; an induction coil is arranged on the periphery of the first assembly; and under preset welding parameters, welding flux is heated to be molten and fills the gap between the sleeve and the valve seat, and cooling and solidification are carried out to form a welding part. An induction welding method is adopted, welding parameters are adjusted and controlled, and therefore the welding quality between the stainless steel sleeve and the aluminum alloy valve seat is ensured.

A parallel robotics apparatus for induction-kinetic welding comprising: a first stage and a second stage movably disposed in a frame, wherein the first stage aligns with a first plane and the second stage aligns with a second plane; a plurality of linear actuators, wherein one of a first end and a second end of the plurality of linear actuators are movably disposed in the first stage and the other of the first end and the second end are movably disposed in the second stage, wherein the first stage and the second stage are movable within six degrees of freedom of each other; further including a first chuck disposed in a middle portion of the first stage and a second chuck disposed in a middle portion of the second stage, wherein the first chuck is adapted to retain a first workpiece to be induction-kinetic welded to a second workpiece retained in the second chuck, wherein the apparatus is adapted to motion the first chuck and the second chuck translationally in an X, Y, and Z direction and rotationally in a Roll, Pitch and Yaw (R, P, Y) motion relative to each other, wherein the apparatus is adapted to rapidly and precisely motion the first workpiece and the second workpiece against each other translationally and rotationally until a dynamic recrystallization occurs within a viscoplastic flow gradient of the first workpiece and the second workpiece.

The utility model discloses an open-close type annular coil for electromagnetic pulse, which comprises two semicircular annular coils which are arranged in a central symmetry manner, two ends of each annular coil are provided with ports which are connected into or out of an external power supply platform, and the connected ports of the two annular coils are not adjacent to each other. Each annular coil is arranged on the corresponding insulating ring, and the opposite faces of the two insulating rings are provided with inserting structures capable of achieving combination of the insulating rings. The whole processing is simple, the production is easy, the mechanical strength is high, the service life is long, and the switching of the opening and closing states of the coil can be quickly realized during welding, so that the problem of processing limitation of the traditional closing coil is solved.

The utility model discloses an efficient welding auxiliary device of a quartz high-frequency welding machine, and particularly relates to the field of quartz welding. A welding head; wherein the quick release piece comprises a shell and an inner container, a cavity is formed in the shell, the inner container is in transition connection with the upper wall and the lower wall of the cavity, metal contact pieces are fixed to the opposite faces of the shell and the inner container, a metal piece in the welding head is electrically connected with the metal contact piece on the shell, and a plug fixed to the inner container is electrically connected with the metal contact piece on the inner container. The plug is matched with the socket, the socket is electrically connected with the control box, the socket can move up and down through the sliding frame, a buckle is fixed in a cavity of the shell, a clamping groove is formed in the side wall of the buckle, clamping sleeves are fixed to the outer end faces of the two sides of the inner container, and the clamping sleeves are matched with the buckle in a clamped mode. The welding position of the welding head can be adjusted, and the welding head can be conveniently and rapidly replaced due to the split type design of the quick disassembly piece.

The invention relates to a steel pipe guide conveying technology, and discloses a guide conveying device for steel pipe welding processing, which comprises a conveying belt for erecting and moving a steel pipe, the tail end of the conveying belt is also provided with an adjusting frame, and a guide frame for guiding the steel pipe is arranged between the adjusting frame and the conveying belt; the lifting frame is movably installed in the middle of the guide frame, machining clamps used for containing and receiving steel pipes are arranged at the left end and the right end of the lifting frame, bags and limiting cavities used for fastening the steel pipes are fixedly embedded in the machining clamps, and first damping balls are movably installed on the limiting cavities; and a parking component for carrying out limiting control on the damping ball I is also arranged in the limiting cavity. According to the guiding conveying device for steel pipe welding machining, guiding conveying and stable clamping limiting of steel pipes can be facilitated, position adjustment of the steel pipes in welding operation is facilitated, and the efficiency of multiple treatment modes such as welding, cleaning and flaw detection of the steel pipes is improved in an auxiliary mode.

The utility model discloses a welding cooling device of a high-frequency welded pipe unit, which comprises a base, the upper end of the base is connected with a processing piece used for cooling a high-frequency welded pipe in the high-frequency welded pipe unit after welding production, and the processing piece comprises a cooling piece used for uniformly cooling the high-frequency welded pipe which is discharged after welding and has a corresponding size; the hydraulic cylinder assembly is installed at the upper end of the base and used for adjusting the height of the cooling part, and the cooling end is aligned with the high-frequency welded pipe discharging end; the utility model relates to the technical field of high-frequency welded pipe unit cooling. According to the welding cooling device of the high-frequency welded pipe unit, the electric push rod adjusts the horizontal position of the traction frame, so that the traction frame drives the four groups of spray heads to slide along the annular supporting frame through the four groups of traction arms, and the distance between the four groups of spray heads and the axis end of the cooling barrel is adjusted; the four groups of spray heads can be matched with the high-frequency welding pipes with corresponding sizes in the cooling barrel, and the adaptability of the device to the high-frequency welding pipes with different sizes is improved.

The invention relates to the technical field of welding of semi-steel cables, in particular to an induction welding tool for a semi-steel cable and a welding method of the induction welding tool, and the welding tool comprises a coaxial positioning mechanism, an induction welding mechanism, a data acquisition assembly, an end face inclination angle judgment module, a coaxiality detection module, an eccentric torque correction module and a welding quality detection module; the method comprises the following steps: determining whether the fitting end surface has angular inclination or not based on a circumferential pressure balance index; under the condition that angular inclination exists, whether the coaxiality is qualified or not is determined based on the horizontal distance between the clamping groove and the vertical center line of the counter bore; whether the gravity eccentric torque of the semi-steel workpiece is qualified or not is determined based on the bending deflection amount of the semi-steel workpiece, and the righting distance of the righting block is adjusted based on the unqualified condition; and the tail pipe and the semi-steel workpiece are welded, and whether the welding quality is qualified or not is determined based on the circumferential spreading uniformity of the metallurgical bonding layer so as to optimize the preset equilibrium index. The welding quality of the tail pipe and the semi-steel workpiece is improved.

The utility model provides high-frequency welding equipment for metal pipe fittings. According to the metal pipe fitting high-frequency welding equipment, a welding table is fixedly connected to the top of a bottom plate, a fixing frame is installed in the middle of the top of the welding table, a movable opening is formed in the bottom of the inner wall of the fixing frame, and sliding rods are fixedly connected to the positions, close to the two sides, of the back face of the inner wall of the fixing frame; a driving assembly is installed on the back face of the fixed frame, a threaded rod is installed at the output end of the driving assembly, a movable frame is installed on the outer surfaces of the threaded rod and the sliding rod, second telescopic rods are fixedly connected to the positions, close to the two sides, of the bottom of the movable frame, and a movable frame is installed at the telescopic ends of the second telescopic rods; and a socket is formed in the back surface of the movable frame. According to the high-frequency welding equipment for the metal pipe fittings, through the design, the welded metal pipe fittings with high temperature can be automatically discharged, the risk of high-frequency welding is reduced, and meanwhile, the high-frequency welding efficiency can be improved.

The utility model relates to a cutter welding device which comprises a high-frequency generator and a cooling medium supply assembly, the high-frequency generator comprises a generator body and a heating pipe, and the generator body is used for generating high-frequency current; the heating pipe is connected with the generator body, the heating pipe is made of a metal material and comprises a first connecting part, a heating part and a second connecting part, one end of the first connecting part and one end of the second connecting part are both connected with the generator body, and the heating part is connected with the other end of the first connecting part and the other end of the second connecting part; a containing area used for containing a to-be-machined cutter is formed on the upper side or the lower side of the heating part, and the heating part is in a spiral disc shape. The cooling medium supply assembly communicates with the heating pipe and is used for providing a cooling medium for the heating pipe. According to the cutter welding device, the short cutter can be quickly welded, the repeated use of the cutter and the secondary utilization of waste products can be improved, and the procurement cost of the cutter is reduced.

The invention relates to the technical field of high-frequency welding equipment, and discloses a high-frequency welded pipe production quality on-line monitoring intelligent diagnosis system, which comprises a data acquisition unit, which is configured to synchronously acquire a high-frequency voltage waveform and a high-frequency current waveform generated by a high-frequency welding loop under the common excitation of a main welding frequency signal and an injected probe signal; the feature extraction unit is connected with the data acquisition unit, and is configured to extract at least one passive electromagnetic fingerprint and one active response fingerprint based on the waveform, and fuse the at least one passive electromagnetic fingerprint and the active response fingerprint to generate a welding state vector; and the intelligent diagnosis unit is connected with the feature extraction unit and is configured to compare the welding state vector with a preset health model so as to judge the current welding quality of the high-frequency welded pipe. According to the method, through an active and passive information fusion strategy, the welding state can be represented more comprehensively, and the detection sensitivity and diagnosis accuracy of early weak defects are remarkably improved.