84 results about "Plasma arc welding" patented technology

The invention discloses a curtain wall aluminum plate local hot melting welding device, and belongs to the technical field of curtain wall welding, the curtain wall aluminum plate local hot melting welding device comprises a climbing mechanism used for climbing along a keel and crossing an embedded plate, and the climbing mechanism is provided with a carrying mechanism used for driving a curtain wall aluminum plate to move to a designated installation position and a welding mechanism used for welding the curtain wall aluminum plate on the keel; through the climbing mechanism and the crossing module, the device can actively clamp and climb along a vertical keel through the wheel pasting module like a wall climbing robot, and when obstacles such as embedded plates are encountered, the device can alternately retract and lift the crossing module step by step, and lossless crossing is achieved; by means of multi-degree-of-freedom coordinated movement, a curtain wall aluminum plate can be extremely accurately conveyed to a designated installation position in a three-dimensional space, meanwhile, a photoelectric detection module on the welding mechanism can automatically scan and accurately position a seam, and accurate welding of local hot melting welding is achieved in cooperation with a plasma welding gun and an angle-adjustable wire feeding pipe.

The invention relates to the technical field of cold-roll steel sheet welding, in particular to plasma arc automatic welding equipment for cold-roll steel sheet machining, which comprises a rack, a moving unit connected to the rack and the like, a plurality of first electric push rods are fixedly connected to the bearing plate; the telescopic ends of the first electric push rods are jointly and fixedly connected with a first mounting plate. A base plate is connected to the first mounting plate and located under the plasma arc welding gun, an arc-shaped groove is formed in the base plate, and the base plate is located in a through groove in the middle of the bearing plate. A plurality of second electric push rods are fixedly connected to the front side and the rear side of the rack correspondingly; the telescopic ends of the second electric push rods located on the same side are jointly and fixedly connected with a second mounting plate, and the two second mounting plates are symmetrically arranged front and back. Through the synergistic effect of all the parts, automatic alignment and welding of the joints of the cold-roll steel sheet cylinder are achieved.

A nozzle for a liquid-cooled plasma arc torch is provided. The nozzle includes an inner nozzle body defining a proximal end and a distal end extending along a central longitudinal axis of the nozzle. The inner nozzle body comprises a plasma bore disposed along the central longitudinal axis. An outer nozzle body is disposed about the inner nozzle body. The outer nozzle body and the inner nozzle body are joined at a distal interface to form a circumferential fluid seal. A liquid coolant channel defined between the inner nozzle body and the outer nozzle body. The liquid coolant channel is disposed substantially circumferentially into the inner nozzle body. A distal tip portion of the liquid coolant channel is located in the inner nozzle body between the distal interface and the plasma bore along a radial axis that is substantially perpendicular to the central longitudinal axis.

The invention discloses plasma arc welding equipment for frame straight seam welding, and relates to the technical field of plasma arc straight seam welding equipment.The plasma arc welding equipment comprises a rack installed on the upper surface of a machine base through bolts, and the side face, located below the rack, of the machine base is connected with a working rack for bearing a frame through bolts. According to the plasma arc welding equipment for frame straight seam welding, the end portions of the two frame workpieces are precisely bulldozed and aligned through the aligning mechanism, the initial assembly error is eliminated, rigid clamping is formed on the two sides of the frame workpieces through the clamping mechanism, the welding faces of the frame workpieces are forced to be tightly attached, and the welding efficiency is improved. The aligning mechanism, the clamping mechanism and the original pressing assembly form three-dimensional multi-point constraint on the frame workpiece, workpiece upwarp, transverse shrinkage and distortion caused by welding thermal stress are effectively resisted, finally, the clamping mechanism is in linkage with the top disc to operate, adsorption of the frame workpiece and the working table top is broken, quick and lossless workpiece taking is facilitated, and the welding quality is improved. And deformation of the frame workpiece is avoided.

The application discloses a valve piece positioning type plasma arc welding equipment and relates to the technical field of plasma arc welding machines.The valve piece positioning type plasma arc welding equipment comprises a machining table, an arc welding gun body, a vertical rod fixedly connected to the top of the machining table, an elevating rail fixedly connected to the end of the vertical rod, an elevating sliding block slidingly connected to the inside of the elevating rail, and a fixed machine ring fixedly connected to one side of the elevating sliding block.The valve piece positioning type plasma arc welding equipment has the advantages that in the process of inside supporting positioning, a sealing pressure seat extrudes a sealing air bag, so that the sealing air bag is in close contact with the open end of a valve piece, the sealing air bag cooperates with the sealing pressure seat and a telescopic sleeve column to realize the sealing of the open end of the valve piece, back protection gas is introduced into the valve piece through the penetrating air holes, and thus, in the case of rapidly realizing the positioning of the valve piece, the sealing treatment is realized, so that the back of the welding point of the valve piece cannot be oxidized and the molten pool is stable.

The invention discloses a building baffle plasma arc welding device, and particularly relates to the technical field of welding, the building baffle plasma arc welding device comprises a bottom plate, a rack is fixedly connected to the upper end of the bottom plate, a main support is fixedly connected to the upper end of the bottom plate, and two centrosymmetric deflection inclined plates are arranged at the upper end of the main support; an air cylinder is fixedly connected to one side of the main support, a telescopic rod is arranged at one end of the air cylinder in an extending mode, a sliding block is fixedly connected to one end of the telescopic rod, and the sliding block is in sliding buckle connection with the main support; according to the device, automatic feeding, assembling, welding and discharging of a first workpiece and a second workpiece can be achieved at the same time, the whole process is cyclically carried out, left-right movement of a sliding block is controlled through stretching and retracting of a telescopic rod, and the sliding block drives a square block to move left and right; the second connecting rod is driven to move back and forth in the rail sliding groove under the action of the inclined face, and the main gear rotates when passing through the rack.

The application discloses a kind of plasma arc welding machine nozzle support device for robot, including protective cylinder, the outer side wall of the protective cylinder is fixedly connected with fixed seat, the fixed seat is rotatably connected with mounting rod, the mounting rod is slidably connected with sliding seat, the sliding seat is fixedly connected with first support, the end of the mounting rod away from fixed seat is rotatably connected with support rod, the support rod is fixedly connected with second support, the first support and second support are rotatably connected with connecting support rod between them, the end of the support rod is equipped with mobile stabilizing mechanism;The mobile stabilizing mechanism includes moving disc, the lower end surface of the moving disc is equipped with a plurality of rolling balls, and the upper end surface of the moving disc is fixedly connected with mounting seat.The application is ingenious in structure, convenient to use, the nozzle is fixed by the device, the movement of nozzle is realized by rolling ball on the device when welding, the distance between nozzle and workpiece surface is guaranteed during welding, and the quality of welding is guaranteed.

An assembly for a plasma arc torch, comprising: an electrical contact element (6) having a proximal contact surface (25) for contact with a power supply part (8) and a cavity having an inner side wall for contact with a side wall of a proximal end portion (14) of an electrode (3); a spring (4) for urging the electrode (3) away from the electrical contact element (6); and an insulating element (5) arranged on the electrical contact element (6) and adapted to prevent a current transfer from the electrical contact element (6) to the spring (4).

The application belongs to the technical field of plasma arc positioning welding, in particular to a positioning device for metal pipeline welding, which comprises a working base plate, a moving support frame and a multi-axis welding mechanical arm, the end of the multi-axis welding mechanical arm is fixedly provided with a plasma arc welding head, the welding station comprises a circular arc strip plate and positioning members one and two movably installed on the inner side of the top of the circular arc strip plate, the metal belt in the form of a ring outside the clamping structure is wound, the diameter of the ring is reduced, gradually adheres to the outer side of the curved part of the L-shaped metal pipe, when the metal belt is gradually tightened, the metal belt is inclined and closely adheres to the outer side of the curved part of the L-shaped metal pipe, and the clamping structure abuts against the outer side of the curved part of the L-shaped metal pipe, because the positioning member one and the positioning member two are arranged in the same way, the positioning member one and the positioning member two will exert a cross tension on the curved part of the L-shaped metal pipe, thereby positioning the curved part of the L-shaped metal pipe.

The invention discloses a combined type micro-beam plasma arc welding shielding gas support cover capable of being flexibly positioned. The combined type micro-beam plasma arc welding shielding gas support cover comprises a clamping mechanism, a shielding gas cover body and a positioning bracket, the clamping mechanism is clamped with the welding gun; the protective gas hood body comprises a main protective gas hood and an auxiliary protective gas hood, the main protective gas hood and the auxiliary protective gas hood are buckled in a sliding mode, and a notch for a welding gun to penetrate through is formed in the buckling position of the main protective gas hood and the auxiliary protective gas hood. The outer walls of the main protective gas hood and the auxiliary protective gas hood are connected with gas delivery pipes; the positioning support comprises a pressing plate and spherical hinges, and the two ends of the pressing plate are movably connected with the spherical hinges. The two ends of the pressing plate are hinged to the clamping mechanism and the main protective gas hood through spherical hinges correspondingly, and the position of the protective gas hood body is flexibly adjusted. The protective gas supporting cover can be flexibly positioned and provide sufficient protective gas atmosphere.

The application provides an intelligent positioning welding device for automatic welding, and relates to the field of welding equipment.The intelligent positioning welding device comprises a plasma arc welding base, a welding moving frame is slidably connected in the plasma arc welding base, a linear motor is arranged on the upper portion of the welding moving frame, a mounting seat is fixedly connected to the outside of the linear motor, a welding sliding seat is slidably connected to the front portion of the mounting seat, a plasma arc welding head is arranged in the welding sliding seat, the plasma arc welding head is aligned with the plasma arc welding base, and two protective baffle frames are symmetrically hingedly connected to the outside of the welding sliding seat.In the process of moving the welding sliding seat downward, the protective baffle frames are turned over through a series of transmission, the protective baffle frames are closed, the plasma arc welding head is covered, the problem that high-temperature sparks generated during welding are easy to scatter everywhere and cause pollution to the surrounding working environment is solved, and the problem that once the high-temperature sparks are splashed on nearby workers, the workers are easy to be caused heat burns.

The utility model discloses a plasma arc welding machine for stainless steel pipe production, which belongs to the field of steel pipe production and comprises a base, a welding mechanism arranged above the base, two groups of jacking components symmetrically arranged at two ends of the top of the base, an auxiliary supporting component arranged above the base and two groups of supporting driving mechanisms symmetrically arranged at the top of the base. The supporting driving mechanism comprises an upper driving assembly and a lower driving assembly, the lower driving assembly is fixedly connected to the top of the base, a mounting frame is fixedly connected to the top of the base, and the upper driving assembly is mounted on the mounting frame through a lifting assembly. The stainless steel pipe welding device has the beneficial effects that the upper driving assembly and the lower driving assembly are arranged, the upper driving assembly is driven by the lifting assembly to move downwards, the upper driving wheel abuts against the stainless steel pipe, friction between the stainless steel pipe and the driving wheel is increased, the rotating stability of the stainless steel pipe is guaranteed, and the welding quality is improved.

The present application relates to photovoltaic curtain wall assembly technical field, disclose a kind of photovoltaic curtain wall automation assembly production line, including glass joint gap glue coating mechanism, for the joint gap of double glazing is coated with glue;Glue scraping and coating mechanism;Corrugated board feeding mechanism;Welding and pressing mechanism, by the welding module of integrated plasma arc welding automatically welds corrugated board and frame;The glass joint gap glue coating mechanism, the glue scraping and coating mechanism, the corrugated board feeding mechanism and the welding and pressing mechanism are sequentially arranged along conveyor frame, the glass joint gap glue coating mechanism includes first mobile lifting module, continuously rotating driving element and glue coating module, the present application adopts precision welding and full automation assembly, ensure that the high precision and high consistency of corrugated board laying and frame welding, meet the development direction of high-end equipment manufacturing and strategic emerging industry, can scale production high quality, high value BIPV product.

The invention relates to the technical field of ion arc welding, and discloses plasma arc welding equipment for valve machining, which comprises a plasma arc welding gun, a driving seat and a clamping jaw, and an external fixture is detachably arranged on the driving seat. The external clamp of the plasma arc welding equipment for valve machining is simple and efficient in mounting and dismounting process, rapid positioning can be achieved through a butt joint rod and a clamping jaw butt joint hole, a bottom bevel angle of a limiting ring automatically extrudes a positioning block in the downward sliding process, after the butt joint rod is completely inserted, the positioning block pops up and is locked under the action of a spring, and manual repeated calibration is not needed; during disassembly, only the clamping ring needs to be pulled upwards, the ejector block can be driven to synchronously extrude the positioning block to unlock, professional tools and technicians are not needed in the whole process, operation can be conducted by one person, and consumed time is short; and the downtime of clamp replacement and precision calibration is effectively shortened, production interruption caused by equipment adjustment is avoided, continuous valve welding operation is guaranteed, and the valve welding device is particularly suitable for the machining requirements of batch production and multi-batch specification switching.

The invention belongs to metal processing equipment, particularly relates to the field of frame welding, and discloses frame plasma arc welding equipment with a stable clamping function, which comprises a base, a first clamping plate is slidably connected in a sliding rail, and a second clamping plate is fixed at the top of the sliding rail. Rubber pads are fixed to the first clamping plate and the second clamping plate, electric telescopic rods are fixed to the periphery of the upper end face of the base, movable plates are fixed to the inner ends of the electric telescopic rods, mechanical arms are fixed to the four corners of the upper end face of the base, and plasma welding machines are fixed to the tail ends of the mechanical arms. According to the vehicle frame plasma arc welding equipment with the stable clamping function, a workpiece can be clamped by using a first clamping plate and a second clamping plate in a matched mode, then a sleeve moves upwards, a second friction pad and a first friction pad abut against each other, a second oil cylinder is conveniently locked, then a moving plate extrudes a first movable block, and the first clamping plate independently moves by a small distance; and the clamping effect is more stable.

The application discloses a framework plasma arc welding machine for intelligent sofa production and relates to the field of plasma arc welding.The framework plasma arc welding machine comprises a machining table and four supporting rods installed on the top of the machining table, an electric sliding table is installed between the four supporting rods, a moving sleeve frame is installed on the inner side of the electric sliding table, an electric push rod is installed on the inner side of the moving sleeve frame, a welding torch is arranged at the bottom of the electric push rod, and a feeding grid is installed on the top of the machining table; further comprising an angle adjusting mechanism for adjusting the welding angle of the welding torch, the angle adjusting mechanism is installed on the outer side of the welding torch, and the angle adjusting mechanism comprises two symmetrical sliding rollers installed on the outer side of the welding torch; through the angle adjusting mechanism, when one of the sliding rollers is in contact with the top of a higher plate, the welding torch can be inclined towards the contact surface of the two plates, the problem that the edges are easily welded too much when the traditional welding torch welds plates with different heights is solved, and the accuracy of welding the two plates is improved.

The invention provides a steel wire rope welding clamp based on a plasma arc welding machine, and relates to the technical field of welding clamps, the steel wire rope welding clamp comprises a base, an approaching mechanism, a synchronous driving device, a lifting opening and closing device and a wrapping positioning device; the device has the advantages of being reasonable and simple in structure, low in production cost, convenient to install and complete in function, steel wire ropes can be rapidly placed and preliminarily limited, transverse deviation of the steel wire ropes in subsequent operation is effectively prevented, and a good foundation is laid for welding positioning; synchronous approaching and precise attaching of the two steel wire ropes can be achieved, the steel wire ropes are comprehensively wrapped and bound through the wrapping structure, the steel wires of the steel wire ropes can be firmly fixed, the steel wires are prevented from being dispersed in the welding process, and it is guaranteed that the steel wire ropes are located at precise welding positioning positions all the time; the synchronous height adjusting function is achieved, the heights of the two steel wire ropes can be conveniently adjusted, it is guaranteed that the to-be-welded ends are located at the same height, the welding coaxiality is guaranteed, and the welding quality is improved.

The invention relates to the technical field of plasma arc welding, and discloses an automatic metal label welding device for traffic and public management, which comprises a rack and a driving seat arranged at one end of the top surface of the rack, and a chuck is rotatably mounted at the other end of the top surface of the rack; a support is arranged at the position, between the driving base and the chuck, of the top face of the rack, a plasma arc welding arm is arranged on the side face of the rack, and a fixing frame corresponding to the chuck is fixedly installed on the top face of the rack. The bottom rod rotating power linkage transmission mechanism drives a first reciprocating lead screw to drive a feeding push plate to automatically push a reinforcing plate, manual feeding and calibration are not needed in cooperation with gravity blanking of a feeding box, limiting of a material blocking plate and reset positioning of an abutting plate, the reinforcing plate can be precisely attached to the preset welding position of the bottom rod, and the welding efficiency is improved. The problems of deviation and inclination caused by manual operation are effectively avoided, the labor intensity is reduced, the uniformity of the welding positions of all the reinforcing plates is guaranteed, and the stability of the product structure reinforcing effect is improved.

The application relates to the technical field of bridge expansion joint processing, and discloses a welding device for bridge expansion joint processing, which comprises a base, two groups of side beams are arranged at the top center of the base, a plasma arc welding gun is arranged above one side of each side beam through a gas cylinder, and the base is provided with a bearing table arranged on both sides of the top of the base, the top of the bearing table is uniformly provided with a positioning seat, the top end of the positioning seat is provided with a supporting block, steel bars are arranged on the supporting block, a driving rod is arranged on one side of the bottom of the supporting block through a guide wheel, the output end of the driving rod is rotationally connected with a transmission rod through a connecting shaft, the top end of the transmission rod is connected with a sliding block through a second hinged frame, a pressing plate is arranged on one side of the sliding block, and the pressing plate is used for converting the gravity of the steel bars into lateral thrust of the pressing plate; a box body is arranged on one side of the positioning seat, a movable piece is arranged in the box body through a tension spring, and an indicator is arranged at one end of the movable piece. The self-weight of the steel bars is used as a power source to realize automatic positioning and lateral pressing of the steel bars, visual positioning indication and reliable mechanical self-locking function are matched, and the welding precision, operation safety and production stability of bridge expansion joint prefabrication processing are improved.

1. Name of the product in this design: Bottom end of a plasma electrode. 2. Application of this design: Overall application for plasma electrodes used on handheld or automatic plasma arc welding torches for cutting or welding; Local application for the bottom end of a plasma electrode. 3. The key design features of this product are the shape of the solid lines. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. Other matters requiring explanation: This application is a partial design patent, and the part indicated by the solid line in the view is the part for which the design patent is sought to be protected.

The application relates to the technical field of mobile power processing, and discloses a plasma arc welding machine for mobile power processing, which comprises a base, a supporting frame is symmetrically arranged on one side of the upper end of the base, a supporting frame is arranged on the upper end of the base through the symmetrically arranged supporting frames, a plasma gun head is arranged on the supporting frame through a welding adjusting mechanism, a working shaft is rotatably arranged on the upper end of the base, a workbench is fixedly arranged on the upper end of the working shaft, a plurality of guide rail seats are arranged on the upper end edge of the workbench, a welding cavity is slidably arranged in the guide rail seat, a mobile power metal shell to be welded is arranged in the welding cavity, a weld adjusting mechanism is arranged on the workbench, a driving mechanism for changing the horizontal rotating angle of the workbench is arranged on the base, and a stable rotating mechanism is further arranged on the base. The application can effectively and quickly adjust the initial welding position and the welding distance of different lengths, can ensure non-stop welding of a large number of mobile power metal shells in the same batch, and can safely and conveniently take and place the workpieces.

The application discloses a special adjusting clamp for automobile transmission shaft plasma arc welding, which comprises a first fixing mechanism and two first tracks arranged in parallel on the two sides of the first fixing mechanism, a first sliding block is slidably arranged on each first track, a second fixing mechanism is fixedly arranged on each first sliding block, and the two second fixing mechanisms are mirror image arranged; the first fixing mechanism comprises a horizontal fixing plate, a rotating adjusting plate is rotatably arranged on the upper end of the horizontal fixing plate, four lifting hydraulic cylinders are vertically arranged on the upper surface of the rotating adjusting plate, the other end of each lifting hydraulic cylinder is rotatably arranged on the lower end surface of an adjusting fixing plate, and a clamp driver is fixedly arranged on the upper surface of the adjusting fixing plate. The application can realize multi-degree-of-freedom pose adjustment of the transmission shaft, meet the requirement of the plasma arc welding process on the positioning precision of the workpiece, and effectively improve the welding clamping efficiency.

This invention provides a process and apparatus for recompressing plasma arc welding of stainless steel using active metal powder. The apparatus includes a welding torch, a powder delivery system, and a gas path control unit. The welding torch contains an ion gas channel and an active metal powder channel, with the outlet of the active metal powder channel facing the arc column region of the plasma arc. The process includes simultaneously feeding the active metal powder into the arc column region of the plasma arc at a preset feed rate, wherein the feed rate is determined based on the welding speed. In this invention, the powder particles melt and evaporate in the arc column region, generating thermal and electromagnetic contraction effects, thus recompressing the arc and effectively increasing the weld penetration without increasing heat input or compressing corrosion resistance.

The application relates to the technical field of hardware welding, in particular to a hardware product plasma arc welding machine and a method thereof, which comprises a supporting base, the top of the supporting base is fixedly connected with a processing table, the back end of the processing table is fixedly connected with a supporting block, the top of the supporting block is fixedly connected with an elevator, the top of the elevator is fixedly connected with a plasma arc welding device, and the front end of the bottom of the plasma arc welding device is provided with a welding spout; when the supporting mechanism is started, the fixing mechanism is driven to be fixed, the synchronization problem of the fixing mechanism caused by multiple driving devices is avoided, meanwhile, the overturning mechanism can be driven to be overturned, the position of a welding point cannot be adjusted in time during welding work is avoided, when the air suction mechanism is started, the cooling mechanism can work, cracks and damage of a welding joint caused by continuous high temperature of the welding joint are avoided, the liquid control assembly can control the cooling mechanism, and liquid leakage during non-working of the cooling mechanism is avoided.

The invention discloses a pipeline steel structure welding device, and particularly relates to the field of plasma arc welding, the pipeline steel structure welding device comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a driving mechanism, the upper end of the bottom plate is fixedly connected with two sets of second fixing shafts, and two sets of assembling mechanisms are rotationally arranged on the second fixing shafts; a first blanking mechanism is fixedly connected to the upper end of the bottom plate, a rotating mechanism is arranged at the upper end of the bottom plate, a first rail groove is formed in the bottom plate, an air cylinder can drive a push plate to move left and right through a first telescopic rod, and with the figure 1 as the initial state, at the moment, a set of first workpieces in a first blanking frame fall into an arc-shaped supporting frame; a second workpiece falls into a first rotating block, a first telescopic rod extends to drive a fixing plate to move leftwards to the position in the figure 2, in the process, a second sleeve can push the first workpiece in an arc-shaped supporting frame to move leftwards till the first workpiece makes contact with a first rotating shaft, and meanwhile a second discharging mechanism is pushed to move leftwards to the leftmost side of a first rail groove under the action of a third spring.

The application discloses an artistic display support block plasma arc welding machine and particularly relates to the technical field of welding, a workbench, an L-shaped sliding groove arranged at the upper end of the workbench, a T-shaped sliding groove arranged at the upper end of the workbench, a first work station arranged at the T-shaped joint of the T-shaped sliding groove, a second work station arranged at the rear side of the first work station, a blanking hole arranged at the front side of the first work station, a limiting frame fixedly connected to the upper end of the workbench, a fixed through hole arranged at one side of the limiting frame, a first fixed plate fixedly connected to the upper end of the L-shaped sliding groove, and a pneumatic cylinder fixedly connected to one side of the first fixed plate. The device can realize automatic feeding and assembling of first workpieces and second workpieces, automatic gap welding of the second workpieces, and unloading of the workpieces after welding and assembling, and can continuously perform welding and sleeving, effectively utilize the thermal expansion and cold contraction of the workpiece welding waste heat, and more conveniently complete the assembling of the first workpieces and the second workpieces.

The invention belongs to plasma arc welding equipment, particularly relates to the field of vehicle frame machining, and discloses vehicle frame plasma arc welding equipment with welding position cooling sprayers, which comprises a base, a cooling mechanism comprises a support plate, a first liquid storage cylinder, a second liquid storage cylinder and a third liquid storage cylinder are fixed on the support plate, and the first liquid storage cylinder, the second liquid storage cylinder and the third liquid storage cylinder are fixed on the base. Liquid outlet mechanisms are fixed to the bottom of the first liquid storage cylinder, the bottom of the second liquid storage cylinder and the third liquid storage cylinder, a supporting box is fixed to the inner top of the third support, a first rotating shaft is rotatably connected to the bottom of the supporting box, a rotating plate is fixed to the bottom of the first rotating shaft, and three first through holes are evenly formed in the rotating plate in the circumferential direction; a first flow guide pipeline is fixed to the front side of the second support, and a nozzle is fixed to the bottom of the first flow guide pipeline. According to the vehicle frame plasma arc welding equipment with the cooling nozzles at the welding positions, the risk of cold cracks caused by rapid cooling of welded workpieces can be avoided in a three-layer progressive cooling mode.

The invention discloses welding equipment for an electric connector assembly, and relates to the technical field of plasma arc welding. The welding equipment for the electric connector assembly comprises a device body, a moving assembly is movably connected to the top of the device body, a welding head is fixedly connected to the front face of the moving assembly, and a lifting table is fixedly connected to the position, located at the bottom of the welding head, of the top of the device body. According to the welding equipment for the electric connector assembly, a to-be-welded metal plate is clamped and fixed, after welding is finished, the metal plate is driven to move through a servo motor, an elastic plate impacts the bottom of a supporting net, the metal plate is affected and shakes, welding slag attached to the surface due to splashing becomes loose, and the welding quality is improved. And then the loose welding slag is taken away through airflow generated by the cleaning mechanism, so that the splashed welding slag is rapidly removed, the influence of the welding slag on welding is avoided, and the welding efficiency is improved.

The utility model discloses a novel welding machine quick-plug connector which is composed of a welding machine side connector and a welding gun side connector. The welding machine side connector comprises a core seat and a tensioning sleeve installed in the core seat, and the welding gun side connector comprises a plug core and a plug outer sleeve located outside the plug core. During use, the plug core of the welding gun side joint is inserted into the tensioning sleeve of the welding machine side joint, so that the front end of the tensioning sleeve shrinks towards the middle under the action of the core seat to tightly hold the plug core, good contact between the tensioning sleeve and the plug core is ensured, and the hook on the core seat is pushed into the L-shaped opening of the plug jacket and then is rotated and fastened, so that the plug core is tightly clamped. Therefore, the welding gun side connector and the welding machine side connector are in close contact and are not prone to loosening, the problems that an existing welding machine connector is prone to loosening, heating is increased due to virtual connection contact resistance, and the connector is burnt out are solved, and the welding gun side connector can be widely applied to various welding machines such as an electric spark surfacing repairing machine, an argon arc welding machine, a plasma welding machine and an electric welding machine.