32results about How to "Fast welding speed" patented technology

The utility model discloses a quick detach type advanced steel material welding auxiliary fixture, including support seat, the upper of support seat is provided with first advanced steel material body, the rear side of first advanced steel material body is provided with first clamp block, adjust the block, set up in the downside of first clamp block, and the inboard of adjust the block is provided with adjusting structure, the upside of first clamp block is provided with connecting block, and the front side of connecting block is provided with first locating rod, the outside of first locating rod is installed with locating cylinder, limit rod, set up in the inside of locating cylinder. The quick detach type advanced steel material welding auxiliary fixture, through to advanced steel material auxiliary fixture carries out quick detach type assembly, effectively improved the efficiency that advanced steel material that welds completed separated from the clamp, improved the speed of welding, at the same time, through to the adjustment of welding interval, effectively improved the application scope of advanced steel material welding.

A high-voltage and high-current fast fuse comprises an end cover, a contact, a fuse tube, a fuse body, a fuse body guide column, arc extinguishing filler and a fastening screw, characterized in that two or more fuse body guide columns are arranged in the fuse tube, the fuse body is fixed on the fuse body guide column in a spiral winding manner, the contact is provided with a fuse body perforation, the fuse body is welded on the outer end surface of the contact through the perforation, the end cover end surface is overlapped on the outer end of the contact and is connected and fixed with the contact through the fastening screw installed hole of the end cover and the contact and the fastening screw. The disadvantages of poor welding are overcome to the maximum extent. In the case of not increasing the length of the fuse tube or even shortening the length, the rated voltage and the rated current of the fuse can be effectively improved, the anti-impact and anti-bumping capabilities of the fuse are improved, and the fuse can be used to protect the integrated power system of a ship, a large energy storage and power transmission system and other high-voltage and high-current power transmission systems.

The utility model discloses an ultrasonic unit puncture welding tool, including ultrasonic generator and cylinder, the ultrasonic generator is fixed on aluminium box, the bottom surface of aluminium box is installed with guide rail, the piston rod of cylinder is connected with aluminium box, the cylinder pushes aluminium box and does reciprocating motion on guide rail, the guide rail is installed on the shell, the ultrasonic generator and female welding head are linked, two sub welding heads are set up on female welding head and extend, two sub welding heads are arranged parallel to each other, and every sub welding head is in flat shape to penetrate material and weld. The ultrasonic unit puncture welding tool provided by the utility model adopts ultrasonic generator to cooperate with sub female welding head, and high frequency vibration energy is applied to the surface of the material to be welded. Not only the welding speed is fast, and the welding strength is high, but also the welding depth can be accurately controlled, the product pass rate is improved, energy saving and environmental protection, and the adaptability is strong.

The utility model relates to the technical field of steel machining equipment, and discloses a steel welding device which comprises a machine base, two symmetrical fixing plates are fixedly connected to the inner side face of the machine base, welding power source equipment is fixedly connected to the upper surfaces of the two fixing plates, and angle adjusting assemblies are arranged on the upper surfaces of the two fixing plates. And fixed seats are arranged above the two fixed plates. According to the welding device for the steel, through the effects of the welding power source equipment, the mounting plate and the welding gun, the conveyed steel can be automatically welded, so that manual operation can be reduced, the labor cost is reduced, the extension length and angle of the welding gun can be adjusted under the effects of an angle adjusting assembly and a hydraulic telescopic rod, and the welding efficiency is improved. Therefore, the height and the angle of the welding gun can be adjusted according to actual conditions, the welding quality is improved, meanwhile, the welding applicability is enhanced, continuous manual opposite welding is not needed in the automatic welding process, the welding speed is high, and the production efficiency is greatly improved.

The utility model relates to a welding device for flame cutting machine processing, comprising: a base, on which a material placing table is arranged, the material placing table is provided with a plurality of clamping pieces, and the clamping pieces are used for fixing a weldment; a three-axis driving part is arranged on the base, a laser welding head is rotationally arranged on the three-axis driving part, and a rotating part is arranged on the three-axis driving part; and the three-axis driving part comprises an x-axis driving part, a y-axis driving part arranged on the x-axis driving part and a z-axis driving part arranged on the y-axis driving part, and a mounting table is arranged on the z-axis driving part. According to the laser welding device, through accurate control of the three-axis driving part, the laser welding head and the rotating part can achieve high-precision positioning in a three-dimensional space, and the laser welding quality is improved. And meanwhile, the welding device can adapt to the welding requirements of different angles on the weldment, and the welding flexibility and diversity are improved, so that the requirement of manual intervention is reduced, and the welding speed and the production efficiency are improved.

This application discloses a method, apparatus, and processor for determining the welding gap of a welding point. The method includes: determining the gap of the next welding point while the welding equipment is welding the current welding point; determining the actual welding parameters of multiple welding points that have been welded before the current welding point; inputting the gap and all the actual welding parameters into a prediction model and obtaining the prediction difference output by the prediction model; and determining the difference between the gap and the prediction difference as the actual welding gap of the next welding point. This allows for determining the actual welding gap of the welding point using only a single acquisition device and prediction model, improving welding accuracy, and enabling timely and accurate determination of gap changes at the welding point, thereby accelerating the welding speed.

The present application provides a thin-walled rectangular corrugated steel plate connecting joint welding method, comprising: laying multiple rectangular corrugated steel plates in sequence along the length direction and welding to obtain a whole corrugated steel plate; forming a circle through a circle forming device to make the leading end and the tail end of the whole corrugated steel plate butt joint to form a connecting joint; arranging at least one patching steel plate at the connecting joint, the patching steel plate covering the connecting joint, at least a part of the patching steel plate being in contact with the surface of the rectangular corrugated steel plates on both sides of the connecting joint, or at least a part of the patching steel plate extending into the interior of the connecting joint, and the patching steel plate being temporarily fixed on the surface of the whole corrugated steel plate through spot welding; feeding the whole corrugated steel plate temporarily fixed again into the circle forming device to perform circle processing; and welding the edges of the patching steel plate in contact with the corrugated steel plate to form four straight intermittent welds to fix the patching steel plate on the whole corrugated steel plate.

The application discloses a suspended ceiling profile calibration welding equipment and relates to the technical field of welding. The equipment comprises a welding mechanism, a feeding mechanism and a calibration mechanism. The welding mechanism and the feeding mechanism are installed on a rack. The welding mechanism, the feeding mechanism and the calibration mechanism are in electrical communication with a control system circuit. The calibration mechanism comprises a pair of traction assemblies and a calibration circuit. The pair of traction assemblies are symmetrically arranged in the rack. Each traction assembly comprises a steel cable, a winding machine and a support machine. The steel cable is connected between the winding machine and the support machine. The support machine is arranged outside the rack. The calibration circuit comprises a pair of sliding variable resistance elements. The pair of sliding variable resistance elements are respectively arranged in the pair of winding machines. The feeding mechanism and the welding mechanism work cooperatively to realize automatic feeding, positioning and peripheral welding. An operator only needs to simply control to complete a plurality of welding, thereby guaranteeing uniform and consistent welding seams, improving welding speed and product quality and being applicable to batch and on-site rapid construction requirements.

The utility model relates to a kind of differential and vehicle, its shell is fixedly connected by welding with main reduction gear, shell is constituted by two half shells and is respectively installed in the axial both sides end surface of main reduction gear. Fixed part for and half shell welding is equipped on the axial both sides end surface of main reduction gear, and positioning part spaced apart from fixed part welding area in radial direction is also equipped, and positioning part supports half shell when welding. The technical scheme will positioning part and welding area be spaced apart, avoid the influence of positioning accuracy by heat distortion generated in welding process, can effectively improve the assembly accuracy and overall performance of differential, ensure the reliable operation of differential.

This invention discloses a manual argon arc welding method for sealing welds of containers with metal gaskets, aiming to solve the problems of multiple filler layers, poor welding quality, and slow speed in existing technologies. The method includes butt welding of base materials, attaching a metal gasket to the base material, with a bottom gap of 1-2 mm formed by the butt welding; using tungsten inert gas (TIG) welding to weld the base material and metal gasket together in one pass at both included angles to form the weld seam. During welding, the welding torch current is 180-220 A, the arc length is controlled within 2 mm, the welding speed is 20-22 cm / min, and two weld layers are formed. This invention is suitable for welding butt welds of sealed containers with metal gaskets, achieving the effects of fewer weld layers, high welding quality, and high speed.

The utility model relates to rapid low-temperature welding equipment for a stainless steel pumping pull rod and a stainless steel single-head bolt, which comprises a lower electrode holder and an upper electrode block, a positioning groove for fixing the stainless steel pumping pull rod is arranged on the lower electrode holder, and a positioning seat for positioning the stainless steel single-head bolt is arranged on one side of the positioning groove. According to the rapid low-temperature welding equipment for the stainless steel pumping pull rod and the stainless steel single-head bolt, when welding is needed, the stainless steel pumping pull rod is placed on the positioning groove of the lower electrode base and makes contact with the lower electrode base, then the stainless steel single-head bolt is placed on the positioning base and attached to the end of the stainless steel pumping pull rod, and the stainless steel pumping pull rod and the stainless steel single-head bolt are welded. The upper electrode block is pressed downwards, the stainless steel single-head bolt is fixed through the arc-shaped groove, the stainless steel single-head bolt is centered, then the stainless steel single-head bolt and the stainless steel single-head bolt are instantly welded together rapidly through large current, and the speed is higher than the speed that two workpieces need to be firmly fixed through argon arc welding and then subjected to full-length welding or direct-acting straight seam welding in a split-edge welding mode through manual work in the prior art.

Provided is a joint of a copper terminal and an aluminium conductor. A copper terminal connecting member of the joint is connected to a conductive core of the aluminium conductor by means of a transition welding layer, and the joint can also be provided with a reinforcing welding layer. Further provided is a method for preparing the joint using plasma arc welding. According to the invention, the connection portion of the copper terminal with the aluminium conductor is filled with solder in a plasma arc welding manner, such that copper and aluminium are connected by means of the solder. Damage to an aluminium oxide layer during welding increases the conductivity and can also isolate the copper terminal and the aluminium conductor, thus preventing an electrochemical reaction between the copper and the aluminium, prolonging the service life of the joint of the copper terminal and the aluminium conductor, and ensuring the mechanical and electrical performances of the connection structure.

The application discloses a flange welding device for tower drum production and belongs to the technical field of welding devices. The flange welding device for tower drum production comprises a tower drum body and a flange body matched with the tower drum body, first fixing rings and second fixing rings are arranged outside the contact positions of the tower drum body and the flange body respectively, rotatable arc-shaped sliding plates are arranged between the first fixing rings and the second fixing rings, ring plates are fixedly installed on the inner sides of the first fixing rings and the second fixing rings, and arc-shaped grooves matched with the ring plates are formed in the corresponding side surfaces of the arc-shaped sliding plates. Compared with traditional manual welding, the flange welding device for tower drum production not only improves the welding speed of a laser welding head on the tower drum and the flange, but also can realize automatic completion of the overlay welding, the laser welding head can keep stable welding during the working process, and therefore the quality of the weld between the tower drum and the flange is improved.

This application relates to an integrated assembly and spot welding process, belonging to the field of welding technology. The production process includes the following steps: Step 101: A steel pipe alignment device is used to position two steel pipes, keeping their axes aligned, thus forming a weld between them; Step 102: A weld positioning device is used to position the weld between the two steel pipes; Step 103: A laser welding machine is used, with at least two laser welding machines spaced apart around the perimeter of the steel pipes, to weld the weld seam; Step 104: An adjustment device is used to quickly adjust the laser welding machines to the weld seam between the two steel pipes. This application eliminates the need for manual welding, prevents sparks and spatter from posing a safety threat to workers, improves the positioning efficiency of the steel pipes, and thus increases the welding speed.

The invention relates to the technical field of plasma arc welding, and discloses an alloy steel mechanical part positioning welding device which comprises a welding table and a driving disc arranged on the top face of the welding table, a welding base is fixedly installed at the position, located on the side edge of the driving disc, of the top face of the welding table, and a plasma arc welding gun is arranged at the movable end of the welding base. A plurality of evenly-distributed mounting holes are formed in the top face of the driving disc, and a plurality of supports are arranged on the top face of the driving disc. According to the clamping device, the position of the support is adjusted, a limiting plate and a positioning plate are matched to ensure that the support is coaxially installed in an installation hole, then the support is attached to the outer wall of a workpiece through a spring telescopic rod and a pressing strip, the spring telescopic rod is fixed through a locking frame, and multi-point adaptive clamping can be formed according to the irregular shape of the special-shaped workpiece; meanwhile, due to the angle locking design of the locking cone pulley and the locking cap, deviation of the workpiece in the welding process is avoided, the problem that special-shaped alloy steel accessories are difficult to fix is solved, it is guaranteed that the workpiece is accurately positioned and firmly fixed before welding, and a foundation is laid for high-quality welding.

The utility model relates to the technical field of battery end plates, in particular to a battery end plate made of metal plates, which comprises a base plate, the left edge and the right edge of the base plate are respectively provided with a first bending portion in a bending mode, and the upper edge and the lower edge of the base plate are respectively provided with a second bending portion in a bending mode. The first bending part and the second bending part are welded at the opposite angle positions of the corresponding base plate to form an enclosed structure, and a reinforcing framework used for reinforcing the strength of the base plate is further welded in the area, located in the first bending part and the second bending part, of the base plate. The enclosing structure formed by bending the base plate endows the end plate foundation with a rigid frame, the welded reinforcing framework specifically enhances the bearing capacity of key parts, and the enclosing structure and the welded reinforcing framework act synergistically, so that the problem of insufficient forming strength of traditional metal plate stamping and welding is effectively solved, the battery end plate can stably support and fix a battery cell group, and the service life of the battery end plate is prolonged. And various external forces in the use process can be borne.

The utility model belongs to pressure vessel welding field, concretely is a kind of novel quick-acting door type pressure vessel welding auxiliary device, including fixed base, the fixed base is welded in the middle position of spherical cap head, and with centripetal ball bearing, center seat realizes coaxial stable connection. The center seat is connected with connecting rod by fixed bolt, the connecting rod is welded with balance adjusting seat integrally. The balance adjusting seat and length adjusting screw rod are fixed by adjusting nut, the length adjusting screw rod is welded together with automatic submerged-arc welding trolley. The utility model structure design is reasonable, by rotating center seat and connecting rod, balance adjusting seat, length adjusting screw rod connection, under the centripetal force provided by the automatic welding submerged-arc trolley fixed in the front end of length adjusting screw rod, make it carry out circumferential motion, make automatic welding submerged-arc trolley can better carry out welding to the group of the circumferential weld of spherical cap head and upper flange, compared with the welding of manual arc welding, the design improves the forming and welding speed of weld, improves work efficiency, reduces cost.

This utility model relates to the field of copper and aluminum tube welding technology, and in particular to a copper and aluminum tube welding device for refrigeration equipment. It includes a base, with pads fixed to both ends of the top of the base, and a support frame fixed to the top of each pad. An installation mechanism is rotatably mounted inside the support frame, and a clamping mechanism is provided inside the installation mechanism. The installation frame is fixed to the middle of the top of the base, and a welding head is installed in the middle of the bottom of the installation frame. The advantages are: after the clamping mechanism stabilizes the device, during the welding process, the motor drives the gear to rotate. Through the meshing transmission between the gear and the tooth groove, the installation ring and the copper / aluminum tube rotate synchronously, thus enabling continuous circumferential welding at the weld joint, resulting in a fast welding speed.

The utility model provides a transformer cooling fin high-flexibility double-robot welding work station which comprises a pair of clamps, a pair of welding robots, a pair of welding robots, a pair of welding robots, a pair of welding robots and a pair of welding robots, wherein the clamps are the same in structure and are oppositely arranged in the X direction; each clamp comprises a Y-direction limiting unit, a clamping unit and a pressing unit, and the Y-direction limiting unit, the clamping unit and the pressing unit are sequentially distributed in the Y direction and all arranged on the side, facing the product to be welded, of the clamp support. The two ends of the Y-direction limiting unit are detachably connected with the clamp support. The Y-direction distance between the pressing unit and the product pipe can be adjusted; the to-be-welded product comprises a product pipe; the end, in the Y direction, of the product pipe of the product to be welded abuts against the Y-direction limiting unit or the clamp support, and the other end, in the Y direction, of the product pipe abuts against a pressing block of the pressing unit. Wherein one clamp and one welding robot body are fixed to the base and arranged on the bottom frame, and the bottom frame and the base are connected through the X-direction moving unit. The flexible welding device can achieve automatic welding and is suitable for products of different specifications so as to achieve flexible welding.

The utility model provides automatic welding equipment for a multi-interface fluid component branch pipe, and belongs to the field of welding equipment. The problems of low welding efficiency and low automation degree are solved. The multi-connector fluid component branch pipe automatic welding equipment comprises a control system, a workbench, a tool trolley, a conveying belt mechanism and a feeding mechanism, a sliding rail and a truss stretching across the sliding rail are arranged on the workbench, a clamping and conveying mechanism is installed on the truss, a pre-assembling mechanism is arranged between the feeding mechanism and the tool trolley, and a clamping and conveying mechanism is installed on the clamping and conveying mechanism. A welding mechanism is further installed on the truss and comprises a pressing assembly and a welding assembly, the pressing assembly ascends and descends through a driving air cylinder to press and position the pre-inserted branch pipe, and the welding assembly achieves multi-directional welding through a rotating device and an angle adjusting device. The welding device has the advantage of high welding efficiency.

This utility model relates to the field of aluminum tube welding technology, specifically disclosing a flame welding machine for aluminum tubes. The machine includes a flame welding device and a rotating mounting frame. The flame welding device is mounted on a main support and can move up and down to perform flame welding on products at welding positions. The rotating mounting frame is located below the flame welding device and has multiple welding positions arranged in a circular pattern. Products to be welded are positioned in each welding position. After the flame welding device descends to its lowest position, it performs flame welding on the product at the current welding position. After welding is completed, the rotating mounting frame switches to the next welding position for welding, enabling continuous flame welding of multiple products. This device has a compact structure, high operating efficiency, and is beneficial for improving welding consistency and quality. It is suitable for automated welding production scenarios involving mass production of aluminum tube workpieces.

The utility model belongs to battery technical field, concretely relates to a battery cover plate subassembly and battery monomer, include: cover plate body, the cover plate body is equipped with pole hole, pole subassembly, including pole body and pole bottom plate, the pole bottom plate includes first surface and second surface, one end of pole body is connected with first surface, pole body passes through pole hole, insulating component is located between inner wall and first surface, insulating component is equipped with the through -hole that pole body passes, it is equipped with support structure between insulating component with first surface, second surface is equipped with the tab welding area of ear, the support structure at least partial location tab welding area of ear along the projection area of insulating component in preset direction, the preset direction is the thickness direction of pole bottom plate, the utility model discloses set up the support structure between pole bottom plate and insulating component, solved the heat damage problem in the welding process.

The application discloses an automatic welding device, which comprises a device main body, a driving motor, a first gear, a second gear, a fixing device, a caliper, a lifting device, a welding mechanism and a connecting pipe, the bottom of the device main body is welded with the top of a motor base, the motor base is fixedly installed with the bottom of the driving motor, the output end of the driving motor is externally sleeved with the first gear, the external meshing teeth of the first gear are distributed in a semicircular shape, the first gear is connected with the second gear in a meshing mode, the fixing device is driven by a rotating disc, when the fixing device rotates to a specified position, the lifting device is driven by a sensing device, the fixing device is moved downwards by the lifting device, so that a tuning ring can be contacted with parts in a module groove, and then automatic welding is carried out through the welding mechanism, compared with a traditional welding mode, the device only needs to be filled with materials, so that the production efficiency is greatly improved, and the operation safety is improved.

This application provides a welding control method, apparatus, electronic terminal, and computer-readable storage medium. The welding control method includes: detecting welding information at the current moment during the welding process to obtain parameter information; determining the welding stage of the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; determining welding parameters according to the parameter information at the current moment and preset variation parameters corresponding to the welding stage at the current moment; the preset variation parameters include voltage change rate and current change rate; and performing welding based on the welding parameters. This application determines welding parameters by using the parameter information at the current moment and the preset variation parameters corresponding to the welding stage at the current moment, so as to control welding based on the corresponding preset variation parameters at different welding stages, thereby reducing spatter during welding.

This disclosure relates to a welding method and welding system for a battery casing. The casing includes a housing surrounding a battery cell and a cover plate for sealing the ends of the housing. The welding method is used to weld the cover plate to the housing. The welding method includes: obtaining a welding path and dividing the welding path into at least a first segment and a second segment connected sequentially; controlling a welding head to weld at a uniform speed in the first segment; and controlling the welding head to weld at a uniform acceleration starting from the end of the first segment in the second segment. When welding the battery casing and the cover plate, making the welding speed of the second segment a uniform acceleration greater than that of the first segment can reduce the laser energy input of the welding head to the latter segment, i.e., reduce the line energy. Even if the welding heat from the first segment accumulates in the latter segment, it will ensure good consistency of the penetration depth between the first and latter segments of the welding path, thereby resulting in a high welding yield and good welding quality for the battery casing.

The utility model relates to the technical field of laser welding, in particular to a laser welding device which comprises a laser system and a clamp, the laser system comprises a laser, an optical fiber, a focusing assembly and a positioning assembly, the laser is used for emitting a light beam, and the light beam sequentially passes through the optical fiber, the focusing assembly and the positioning assembly and then irradiates a to-be-welded part; the positioning assembly is used for adjusting the focusing position of the light beam on the to-be-welded part, and energy of the light beam is distributed in a flat-top mode. According to the technical scheme, the laser welding device can be adopted for welding the to-be-welded part, stable welding can be conducted on the premise that whether the to-be-welded part is pretreated or not, irradiation is conducted through high-energy-density light beams distributed on the flat top, an insulating layer on the surface of the to-be-welded part can be instantly gasified, fusion welding is conducted on the to-be-welded part, and the welding quality is improved. And pseudo soldering and unsoldering are effectively avoided, falling and aging caused by long-term use are prevented, the welding yield and the use reliability are improved, and meanwhile resistance increase can be avoided through the laser fusion welding mode.

The utility model relates to a pressure induction welding device, and relates to the technical field of welding, the pressure induction welding device comprises a first shell, one end of the first shell is connected with a second shell, the other end of the first shell is connected with a dormant ring, a limiting piece is sleeved with the dormant ring, a soldering pen core PCB sliding plate used for containing a soldering pen core is slidably arranged in the first shell, and the soldering pen core PCB sliding plate is slidably arranged in the dormant ring; a control assembly is installed in the second shell, one end of the control assembly is connected with the pressure sensing assembly, the other end of the control assembly is connected with a connecting line, the connecting line is connected with a plug used for being connected with a soldering station host, the soldering station host is connected with the soldering pen core, and the soldering pen core is connected with the control assembly. The pressure sensing assembly is arranged on the side close to the pressing assembly, and a gap is formed between the pressing assembly and the pressure sensing assembly. The method has the effects that the welding power is dynamically adjusted according to the actual welding pressure, manual frequent adjustment of operators is not needed, and the welding efficiency is greatly improved.

The application discloses a double-pipe liquid accumulator of an air conditioner compressor, which comprises a cylinder body, two gas outlet bends and a gas inlet pipe arranged at one end of the cylinder body, and is characterized in that the one end of the cylinder body is tapered and shrunk, the small-diameter end of the tapered section is provided with a cylindrical neck opening to form a gas inlet port, the other end of the cylinder body is a flat bottom surface which is connected with the round corner of the middle cylinder body, two conical outer bosses are arranged on the flat bottom surface, and a gas outlet port is arranged in the middle of each outer boss; the gas outlet bends and the gas inlet pipe are formed by composite welding of copper pipe sections and iron pipe sections; or the gas outlet bends and the gas inlet pipe are made of iron pipes and are locally plated with copper; compared with the use of copper pipes, the composite welding of the copper pipe sections and the iron pipe sections can greatly reduce the use amount of copper, and the use of copper can also be reduced by making the gas outlet bends and the gas inlet pipe of iron and locally plating copper, only the key parts which need to be welded with the compressor or other components are plated with copper, and the cost is reduced to the maximum extent.

The utility model provides a Christmas cap making machine which comprises a machine frame, the machine frame is rotationally connected with an unwinding roller used for unwinding a main body cloth roll, the machine frame is connected with an unwinding rod used for unwinding an edge sealing cloth roll, and the machine frame is connected with a guide assembly used for guiding edge sealing cloth to the edge of the main body cloth. An edge welding assembly, a pulling force assembly, a main body welding assembly and a cutting assembly are sequentially arranged on the rack in the conveying direction of the main body cloth, the pulling force assembly is used for pulling the main body cloth to move towards the main body welding assembly, and the main body welding assembly correspondingly welds the two main body cloth; and the cutting assembly cuts the welded main body cloth, so that the problems of complicated operation and low efficiency in the traditional Christmas cap manufacturing process are effectively solved, and the optimization of the production process and the improvement of the efficiency are realized.

This invention discloses a welding device for automotive rear axle housings, belonging to the field of rear axle housing welding technology. It includes a base, with a chuck fixing seat fixedly mounted on one side of the top of the base. A stepper motor is fixedly mounted inside the chuck fixing seat, and the output end of the stepper motor extends out of one side of the chuck fixing seat and is fixedly connected to an electric chuck. By setting the chuck fixing seat and the internal stepper motor and electric chuck on the top of the base, and cooperating with the first electric telescopic rod, rotating seat, and clamping sleeve on the clamping frame, precise clamping of both ends of the rear axle body is achieved. Simultaneously, the two third electric telescopic rods and the pre-clamping frame in the pre-clamping mechanism pre-position and support the middle section of the rear axle body, forming a three-point positioning structure of "fixed ends + middle section support." This structure significantly improves the positioning accuracy and stability of the rear axle body, effectively reduces welding deformation, and improves the quality of the welded joint and the overall strength of the rear axle housing.