272results about "Electrode accessories" patented technology

The utility model relates to the technical field of gas guiding of gas shielded welding guns, in particular to a gas guiding assembly of a gas shielded welding gun, which comprises a gas inlet pipe, a contact tube arranged at one end of the gas inlet pipe and gas dispersing holes arranged on the side wall of the gas inlet pipe. The side wall of the flow dividing sleeve is provided with a plurality of flow dividing holes, the inner wall of the flow dividing sleeve is provided with a vent groove, the flow dividing holes are communicated with the vent hole through the vent groove, the air inlet pipe is sleeved with an insulating cylinder, one side of the insulating cylinder is provided with a spray pipe, a spiral blade is sleeved with the spray pipe, and the spiral blade is arranged on the air inlet pipe in a sleeved mode. And the shunting hole and the contact tube are positioned in the spiral blade. The utility model provides a gas guide assembly of a gas shielded welding gun, which can reduce turbulent flow formed in a welding area, improve the welding quality and conveniently clean welding slag, and is used for overcoming the defects in the prior art.

The invention discloses a current-adjustable welding machine contact tube and a using method thereof, and the current-adjustable welding machine contact tube is applied to the technical field of welding machine contact tubes. A contact tube main body is composed of a connecting section, an external thread cylinder and an extending section, and the connecting section and the extending section are designed to be detachable; according to the electric conduction nozzle, the welding wire channel in the electric conduction nozzle body can be conveniently cleaned, the abraded extending section part can be conveniently replaced, and therefore the overall replacement cost is reduced, the cleaning structure composed of the surrounding assembly and the blowing assembly is arranged, the surface of the welding wire can be wiped through the surrounding assembly when the welding wire passes through the cleaning structure, and the welding wire can be conveniently cleaned. And impurities such as burrs are removed, and dirt on the surface of the welding wire is further removed in cooperation with the injection assembly connected with high-pressure gas, so that the impurities and the dirt on the surface of the welding wire are removed before the welding wire enters the extension section, and the abrasion to the interior of the contact tube main body and the influence on the welding quality are reduced.

An example welding-type system includes: a welding-type power source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating current through a first portion of the welding-type electrode via a second contact tip of the welding torch; a switching circuit configured to control a current flow between the welding-type power source and the first contact tip; and a preheat control circuit configured to control the switching circuit to: selectively direct current from the welding-type power source to the second contact tip; and selectively divert current from the electrode preheating circuit to the first contact tip.

The invention provides a robot welding machine, and belongs to the technical field of welding robots, the robot welding machine comprises a robot body, and further comprises a shunting heat conduction assembly and a supporting cleaning assembly; protective gas forms focused gas flow through shunting and secondary shunting, and gas flow sprayed by the cooling channel and the permeable plate is uniformly mixed under the guidance of a conical space at the front end of the nozzle, so that the concentration distribution of the protective gas above a molten pool is consistent, and the welding seam quality is improved; trace moisture in the protective gas is treated under the action of centrifugal force of the turbofan, and water vapor generated by falling and evaporation of water drops is guided to the periphery of the gas hood and cannot intrude into a molten pool area; the heat conduction cylinder rotates to enable airflow to sweep the whole surface of the contact tube, local overheating and heat dissipation dead angles are avoided, and the normal working temperature of the contact tube is guaranteed; the airflow can clean splashing particles attached to the outer side of the contact tube and the inner wall of the nozzle, the scraping arm can be tightly attached to the cleaning face in the rotating process and can abut against the contact tube, the deformation possibility of the contact tube is reduced, and the continuity and stability of the welding process are guaranteed.

The invention relates to the technical field of building construction welding, in particular to steel structure electric arc welding equipment for building construction. The device comprises a welding gun, a nozzle structure is installed at the bottom of a welding head connecting pipe in a threaded mode, the nozzle structure comprises a hollow spraying pipe and a contact tube extending from the interior of the welding head connecting pipe, an isolation inner pipe is installed in the spraying pipe in a clamped mode, and a gas flow channel formed between the spraying pipe and the contact tube is separated through the isolation inner pipe. The external expansion structure at the lower end of the isolation inner pipe is matched with the height difference between the bottom end of the isolation inner pipe and the bottom end of the spray pipe, physical shielding is formed, and high-temperature splashes entering the external sub-runner during welding are reduced; therefore, adhesion on the inner wall of the outer sub-runner is effectively avoided, the outer sub-runner is kept smooth all the time, and stable conveying of the protective gas is guaranteed.

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

The invention relates to the technical field of welding devices, and particularly discloses balance oil cylinder welding equipment and a welding process thereof.The balance oil cylinder welding equipment comprises a power system, a welding gun, a wire feeding system, a gas protection system and a cooling system.The welding gun comprises a gun body, a diverter, a conductive sleeve and a nozzle, the conductive sleeve comprises a pipe body, and a through hole penetrating front and back is formed in the pipe body; a threaded section connected with the flow divider is arranged at the tail end of the pipe body, and a plurality of mounting grooves communicated with the through hole are formed in the circumferential surface of the pipe body; the conductive blocks are matched with the mounting grooves in shape, so that the conductive blocks can slide in the radial direction of the pipe body and make contact with the welding wires, the outer sides of the conductive blocks protrude out of the pipe body, pressure is continuously applied through the fastening wires, tight contact between the conductive blocks and the welding wires is kept, poor contact of the welding wires in the abrasion process is avoided, and the service life of the welding wires is prolonged. Therefore, the stability and the quality of the welding process are ensured.

The utility model relates to the field of welding, and provides a welding device for welding in a narrow space. The welding device for welding in the narrow and small space comprises a nozzle, an inclined wire contact tube and a welding wire. The nozzle can vertically extend into the welding space; the inclined wire contact tube is partially inserted into the nozzle in an inclined mode, the extending end of the inclined wire contact tube can be located on one side of an opening in the tail end of the nozzle, a flow guide sleeve is detachably installed on the other side of the opening in the tail end, and the flow guide sleeve can partially shield the opening in the tail end of the nozzle. The welding wire is arranged in the inclined wire contact tube in a penetrating mode and can stretch out of an opening in the tail end of the nozzle so that an electric arc can be formed on one side of the nozzle. According to the welding device for welding in the narrow and small space, the nozzle can directly stretch into the welding space, the welding wire is conveyed to any welding position in the welding space through the inclined wire contact tube, and therefore the flow guide sleeve is additionally arranged on the nozzle to form a lateral gas supply structure, the whole molten pool is reasonably covered with protective gas, and the welding efficiency is improved. The problems of gas turbulence and molten pool protection are solved.

The invention relates to the technical field of bushings, in particular to a babbitt metal bushing and an additive preparation method and device thereof. The preparation method of the babbitt metal bushing comprises the following steps that a babbitt metal wire serves as a cladding material, surfacing is conducted on the surface of a workpiece base body, and a copper-coated reinforcing material is fed into a molten pool in a synchronous powder feeding mode in the surfacing process; the copper-coated reinforcing material comprises at least one of copper-coated graphite powder, copper-coated carbon fiber and copper-coated glass fiber. The graphite powder, the carbon fibers, the glass fibers and other reinforcing materials are added into the molten pool in a copper coating mode, the density difference between the reinforcing materials and babbitt metal can be reduced, and composition segregation caused by floating of the reinforcing materials can be restrained; meanwhile, Cu wrapping the reinforcing materials can react with elements in the babbitt metal, the continuity and uniformity of the reinforcing materials and a babbitt metal matrix are improved, and the reinforcing materials such as graphite, carbon fibers and glass fibers can be evenly distributed in the bushing.

The invention provides a welding device for power plant boiler installation, and belongs to the technical field of boiler installation and welding. Comprising a welding installation part, a knocking auxiliary part is installed on the welding installation part, the knocking auxiliary part is used for preventing the welding installation part from being damaged, an attaching installation part is installed on the welding installation part, a gas facing protection part is installed on the attaching installation part, and the gas facing protection part is used for ensuring the gas protection quality. A swing limiting piece is installed on the attaching installation piece and used for improving operation standardability, and a gas protection prompting piece is installed on the welding installation piece. The gas facing protection part is arranged to be matched with the attaching installation part to be used for limiting the operation standardization of workers, and the carbon dioxide protection quality is guaranteed; the problems that an existing welding device for installing the boiler of the power plant is inconvenient to automatically control and limit gas-facing welding of workers, and welding wires for carbon dioxide protection welding are also prone to being blocked by splashing objects are solved.

The invention discloses a welding device for a longitudinal submerged arc welding pipe, which comprises a steel pipe semi-finished product which is formed by rolling a steel plate through a forming machine, a shaping mechanism which is horizontally arranged and can allow the steel pipe semi-finished product to pass through in a matched manner and form positioning in the circumferential direction of the steel pipe semi-finished product, and a V-shaped roller way conveyor which is arranged on the shaping mechanism, the V-shaped roller way conveyor is arranged at the input end of the shaping mechanism in a butt joint mode and used for feeding semi-finished steel pipe products, the welding mechanism is erected at the output end of the shaping mechanism and used for welding the splicing positions of the semi-finished steel pipe products, the aligning mechanism is arranged between the shaping mechanism and the V-shaped roller way conveyor and used for adjusting the positions of V-shaped grooves, and the limiting guide mechanism is arranged between the welding mechanism and the shaping mechanism and used for limiting the positions of the V-shaped grooves. The invention relates to the technical field of welding equipment. According to the welding device for the longitudinal submerged arc welding pipe, by introducing the alignment mechanism, automatic alignment of a V-shaped groove in a semi-finished steel pipe and the output end of the welding mechanism is achieved, dependence on manual adjustment is reduced, and the alignment precision is improved.

The invention relates to the technical field of welding, and discloses metal part welding equipment and a technology thereof.The metal part welding equipment comprises two symmetrically-arranged discs, the two discs are each rotationally provided with a limiting mechanism, and each limiting mechanism comprises a rotating ring rotationally connected with the corresponding disc; a plurality of supporting rods arranged in the circumferential direction are slidably connected to the gear ring in an inserted mode, the ends of the supporting rods are fixedly connected with the rotating ring, and the supporting rods are sleeved with second tension springs with one ends fixedly connected with the supporting rods and the other ends fixedly connected with the gear ring; the clamping blocks define a clamping area allowing the metal piece to be inserted therein. In the preparation work before welding of two metal pieces, after the driving number is reduced, fitting work and limiting work of two pipe fittings can still be achieved, and meanwhile the situation that the fitting procedure and the limiting procedure of the two pipe fittings are carried out separately can be avoided, so that time is saved.

Disclosed example systems include: a welding contact tip having: a first axial end portion having a welding wire outlet of an internal bore of the welding contact tip; a threaded middle portion adjacent the first axial end portion; and a second axial end portion adjacent the middle portion, wherein the middle portion includes external threads and the second axial end portion extends the remaining length of the welding contact tip adjacent the middle portion to an axial end face of the welding contact tip; and a gas diffuser that does not contact the second axial end portion or the axial end face of the welding contact tip, and the gas diffuser is configured to conduct welding current to a welding wire within the internal bore via a current transfer path, wherein the current transfer path includes the middle portion and does not include the second axial end portion.

The utility model relates to the technical field of welding equipment, in particular to a welding device for small-space operation, which comprises a grab handle. An adjusting mechanism is arranged on the grab handle and comprises a welding gun head, the welding gun head is rotationally connected to the tail end of the grab handle, a clamping block is fixedly connected to the outer side of the welding gun head, a positioning frame is slidably connected to the tail end of the grab handle, and a clamping groove corresponding to the clamping block in structure is formed in the inner side of the positioning frame. The tail end of the clamping block is fixedly connected with a contact elastic piece, one end of the positioning frame is fixedly connected with a guide rod, and the outer side of the guide rod is sleeved with a reset spring. The angle between the welding gun head and the grab handle can be conveniently adjusted in the using process through the arranged angle adjusting type welding gun head, so that welding operation can be conveniently conducted on a deep area when operation is conducted in a small space, the application range of the device is widened, and the situation that welding equipment is limited by a welding structure is avoided.

The invention discloses a multi-layer cavity full-coverage water cooling robot welding gun which comprises a shell, a double-water-cooling gun neck and a water cooling nozzle. The shell is installed on the mechanical arm so as to be connected with the welding robot. The double-water-cooling gun neck is installed at the front end of the shell and sequentially comprises an inner pipe, an inner isolation pipe, an outer isolation pipe and an outer pipe from inside to outside, an inner ring water path channel is formed between the inner pipe and the inner isolation pipe, an air path channel is formed between the inner isolation pipe and the outer isolation pipe, an outer ring water path channel is formed between the outer isolation pipe and the outer pipe, and the air path channel is communicated with the outer pipe. Double-layer water cooling of the gun neck is achieved, and the cooling effect is improved. The water-cooling nozzle is mounted at the front end of the double-water-cooling gun neck and comprises an inner nozzle pipe and an outer nozzle pipe, a nozzle waterway channel is formed between the inner nozzle pipe and the outer nozzle pipe, and the nozzle waterway channel is communicated with the outer ring waterway channel, so that comprehensive water cooling of the whole welding gun is realized, and the water-cooling efficiency and the water-cooling effect are improved; the service life of parts of the welding gun is prolonged, and 24-hour welding operation all day long is achieved.

The invention relates to the technical field of water cooling box machining processes, in particular to a copper-aluminum composite water cooling box manufacturing and machining process. The water-cooling box comprises a water-cooling box shell and a water-cooling box cover plate, the water-cooling box shell is provided with a profiling groove for installing the water-cooling box cover plate, a plurality of PINFIN columns which are evenly arranged are arranged in the profiling groove, the bottom face of the water-cooling box cover plate is provided with grooves matched with the PINFIN columns to be embedded, and the PINFIN columns are embedded in the grooves. The grooves and the PINFINs are arranged in a one-to-one correspondence mode and are installed in an interference fit mode. The water cooling box has the beneficial effects that according to the technical scheme, the PINFIN and the upper cover are installed in an interference fit mode, and the periphery is machined in a friction stir welding mode, so that the sealing performance of the whole water cooling box is ensured, compared with the prior art, the top PINFIN is installed without a brazing process, and the cost is reduced. The problems are solved directly in an interference fit mode, the structure is simple, and the performance of materials cannot be affected.

The utility model relates to the technical field of welding, in particular to a contact tube with high abrasion resistance and a manufacturing method thereof, which comprises a contact tube body, a connector arranged at the rear end of the contact tube body, a cone section arranged at the front end of the contact tube body, a cylindrical section arranged between the connector and the cone section, and a welding wire channel arranged in the contact tube body and used for a welding wire to pass through. The welding wire channel extends in the length direction of the contact tube body and comprises an expansion section and a contraction section, the diameter of the expansion section is larger than that of the contraction section, the section of the welding wire channel is round, the welding wire channel penetrates through the contact tube body, and a boss is arranged on the rear portion of the cylindrical section and expands outwards in the radial direction of the cylindrical section. The diameter of the connector is smaller than that of the cylindrical section. According to the high-abrasion-resistance contact tube and the manufacturing method thereof, the electric conductivity is high, and welding wire adhesion caused by poor arc striking can be avoided. In the welding process, wear resistance is achieved, hole diameter abrasion is reduced, and therefore welding quality is guaranteed, welding efficiency is improved, and production cost is saved.

The utility model relates to the technical field of welding guns, in particular to a high-current welding gun which comprises a main sleeve, a conductor sleeve is arranged in the main sleeve, an insulating sleeve and an insulating gas screen are arranged on the outer side of the main sleeve in a sleeving mode, the insulating gas screen is arranged at the bottom of the insulating sleeve, a main body shell is arranged on the outer side of the insulating sleeve and the outer side of the insulating gas screen in a sleeving mode, and a nested shell is arranged on the lower portion of the main body shell in a sleeving mode. The lower portion of the nesting shell is connected with a nozzle, the gas channel is defined by the outer side of the main sleeve, the insulating sleeve, the insulating gas screen and the main body shell and communicated with the nozzle, the gas inlet pipe is communicated with the gas channel, the water inlet pipe and the water return pipe are both communicated with the cooling water channel, and protective gas is introduced into the gas channel. The protective gas can cool the electric conductor and can reach the nozzle, the cooling range in the welding gun is expanded, the cooling water channel is formed in the outer side of the gas channel, heat exchange with the protective gas can be conducted while the electric conductor is cooled, and the use temperature of the welding gun is remarkably reduced.

The application discloses a kind of automatic welding production line of round tube and bush, it is related to welding production line technical field, including round tube conveying line, bore assembly being arranged at the end of first conveying branch line and second conveying branch line, chip suction assembly being arranged at the other end of second conveying branch line, and welding assembly being arranged at the both ends of third conveying branch line, it is laterally transferred round tube between adjacent conveying branch line;The technical advantage of the application is: by setting round tube conveying line and round tube transfer line vertically and horizontally, first air cylinder is arranged at the both ends of transfer frame, barb is arranged at the end of transfer frame upward, efficient transfer is realized in the way of height difference between bore assembly, chip suction assembly and welding assembly;By setting pneumatic chuck, rotary drive part and welding locking piece, the circumferential rotation control of round tube is realized, by setting bushing box and bushing positioning structure, automatic taking of bushing is realized, and then full-automatic welding of round tube and bushing is realized, and welding efficiency is improved.

A contact tip for welding includes: a tip case; a power supply tip that is housed in the tip case and supplies power to a welding wire supplied from a side close to one end of the power supply tip while holding the welding wire at another end opposite to the one end; and a guide that presses the power supply tip from the side close to the one end and houses the power supply tip in the tip case, in which the power supply tip has a shape in which an outer diameter from a press point pressed by the guide to a fulcrum in contact with the tip case increases from the press point toward the fulcrum, and the power supply tip is rotated about the fulcrum by pressing of the guide to hold the welding wire at the other end.

The invention relates to a wear part for an arc torch, plasma torch or plasma cutting torch, characterised in that the wear part or at least one part or a region of the wear part consists of an alloy formed from silver and zirconium, silver and hafnium, or silver and zirconium and hafnium.

The utility model relates to the technical field of large roller surfacing, in particular to a high-temperature-resistant submerged-arc welding gun device for large roller surfacing repair, which comprises a welding flux blanking hose, a welding flux blanking steel pipe, a wire feeding system, a conducting rod, a heat insulation mechanism, a heat preservation box, a blanking positioning mechanism, a three-way diverter, a contact tube and a contact tube protection sleeve, the heat insulation mechanism comprises a steel plate shell and heat insulation fire-resistant cotton, the steel plate shell is horizontally arranged between the heat preservation box cover and the wire feeding system, the heat insulation fire-resistant cotton is arranged on the side, facing the wire feeding system, of the steel plate shell, and the welding flux discharging positioning mechanism is arranged on the outer circumference of a conducting rod in the heat preservation box. The surfacing welding device has the advantages that the surfacing welding device can go deep into a high-temperature heat preservation furnace for surfacing welding, and the stability of welding bead forming in the surfacing welding process is improved.

A contact tip reshaping device 3 comprises: a core rod 37 having a circular cross-section; and three or more pressing metal pieces 36 disposed so as to be arranged in the circumferential direction along an outer circumferential surface 23c of a contact tip 23. Each pressing metal piece 36 has an arc-shaped shaping surface 36a. A shaping unit 30 includes: a guide part 31b for guiding each pressing metal piece 36 in the radial direction of the contact tip 23; and a shaping part 30 for causing the plurality of pressing metal pieces 36 to advance / retreat in the guidance direction of the guide part 31b. Shaping loads from the plurality of pressing metal pieces 36 are simultaneously applied to the outer circumferential surface 23c of the contact tip 23.

The invention discloses a double-side-arranged type double-layer inner side bent nozzle device and a narrow gap welding method thereof.The nozzle device is composed of an outer-layer front nozzle pipe and an inner-layer front nozzle pipe which are arranged in the vertical direction, and each nozzle pipe is formed by connecting an upper connecting section, a middle vertical section and a lower bent section; wherein the middle vertical section and the lower bent section both extend into the narrow-gap welding groove and can be used in the full groove depth; the lower bent sections of the inner-layer front nozzle pipe and the inner-layer rear nozzle pipe are both bent towards the inner side and are respectively aligned with the lower section of the contact tube of the welding torch from the front side and the rear side, and the lower bent sections of the outer-layer front nozzle pipe and the outer-layer rear nozzle pipe are both bent towards the inner side and are respectively aligned with a welding arc area in the groove obliquely downwards from the front side and the rear side; and the inner / outer layer nozzle air flow is vectorized and adjusted to protect a welding high-temperature area, meanwhile, the contact tube is directly cooled, and the contact tube and the lower end face of the welding torch body are prevented from being impacted by welding high-temperature hot air, so that the narrow-gap welding quality is improved, and the service life of the welding torch contact tube is prolonged.

The utility model provides a welding gun nozzle structure and a welding gun. The welding gun nozzle structure comprises a gun barrel, a welding nozzle and a clamping assembly. A first through groove is formed in the gun barrel. The welding nozzle is inserted into the end, close to the first through groove, of the gun barrel. The clamping assembly comprises a first limiting piece and a movable piece, the first limiting piece is slidably installed in the first through groove, the gun barrel is sleeved with the movable piece, and the movable piece can slide relative to the gun barrel. And when the movable part slides away from the first through groove, the welding nozzle can be inserted into or separated from the gun barrel. After the welding gun nozzle is inserted into the gun barrel, when the movable part slides to the position for shielding the first through groove, the first limiting part can be pushed to limit movement of the welding nozzle. According to the welding gun nozzle structure, the welding nozzle does not need to rotate in the process that the welding nozzle is installed on the gun barrel. The situation that workers need to repeatedly adjust the insertion angle of the gun barrel when assembling the gun barrel is avoided, the installation difficulty of the welding gun nozzle and the gun barrel is lowered, and the installation efficiency is improved.

The utility model discloses a cooling nozzle and a welding gun. The cooling nozzle comprises a connecting seat, a nozzle pipe body and a nozzle head, the connecting base is fixedly installed at the end of the welding gun neck, a water receiving pipe protrudes out of the front end of the connecting base and communicates with a water path of the welding gun neck, and a first water inlet hole and a first water outlet hole are formed in the water receiving pipe. The nozzle pipe body is connected to the connecting base in an inserted mode and comprises an inner pipe and an outer pipe, a water channel is formed between the inner pipe and the outer pipe, the water channel is communicated with the first water inlet hole and the first water outlet hole, and heat exchange cooling of the cooling nozzle is achieved. The nozzle head is detachably installed at the front end of the nozzle pipe body so that the nozzle head can be replaced conveniently.

To provide a contact tip which is hardly worn even when used for aluminum welding and to which spatters are hardly stuck.SOLUTION: The split type contact tip is formed by screwing a tip 20 made of nickel silicon copper to the tip of an adapter 10 made of copper alloy. It is preferable that the copper alloy constituting the adapter 10 is chromium copper or zirconium chromium copper, and the nickel silicon copper constituting the distal end tip 20 has a composition of nickel: 1.0 to 5.0% (mass%, the same applies hereinafter), silicon: 0.4 to 2.0%, and the balance: copper and inevitable impurities.SELECTED DRAWING: Figure 1

In the welding contact tip of the present invention, the entire tip body is made of a copper alloy having a composition of Ni: 1.0 to 5.0%, Si: 0.4 to 2.0%, and a balance: Cu and unavoidable impurities in % by mass. It is possible to improve the service life so that the service life is 6 to 8 times longer than that of the conventional one while suppressing the manufacturing cost. The total quantity of unavoidable impurities is preferably 0.3% or less. In addition, it is particularly preferable that Ni is in a range of 2.0 to 4.0% and Si is in a range of 0.8 to 1.5%.

A correcting device is used for correcting a welding gun. The welding gun comprises a welding handle, a gun body and a gun head, and the correcting device comprises a fixing element used for positioning the welding gun by fixing the welding handle of the welding gun; the alignment element is used for providing a correction reference position; the correcting assembly comprises a grabbing element used for grabbing at least one part of the welding gun at the preset position of the welding gun, a driving mechanism used for driving the grabbing element to move and a connecting rod element connected between the driving mechanism and the grabbing element. The driving mechanism is configured to enable the connecting rod element to move up and down in the vertical direction, move left and right in the transverse direction perpendicular to the vertical direction and parallel to the connecting rod element, and move front and back in the longitudinal direction perpendicular to the vertical direction and the transverse direction. And the grabbing element is configured to move along with the movement of the connecting rod element, so that the gun head of the welding gun is driven to move to a position aligned with the correction reference position of the alignment element, and the welding gun is corrected.

Contact tips for a wire arc additive manufacturing (WAAM) system can include guide portions. Guide portions can include elongated portions with a first end and a second end; guide terminal parts attached to the first end of the elongated portion with terminal grooves. Terminal grooves can be formed between two protrusions. Terminal grooves can be configured to accommodate WAAM wires. Contact tips can further include inset portions. Inset portions can be configured to nest within the guide portion to hold the WAAM wire. When the inset portion is nested within the guide portion there can be a gap between the guide portion and the inset portion such that wire shavings generated during WAAM can be discharged.