352results about "Resistance electrode holders" patented technology

The invention discloses a high-precision point iridium welding device and process, and relates to the technical field of pen point welding. The device comprises a conveying assembly capable of moving along an annular path, a welding assembly arranged below the conveying path and positioning tools arranged corresponding to conveying blocks. The conveying assembly comprises a plurality of conveying blocks, and the positioning tool is used for inserting a to-be-welded pen point base material; the welding assembly comprises a hopper, a feeding pipe coaxially connected with the hopper in a sliding mode, an electrode ring fixed to the top end of the feeding pipe and an inverted-cone-frustum-shaped iridium particle groove formed in the top end. The hopper can be filled with iridium particles to be welded, the feeding pipe can ascend and descend in the vertical direction, and the iridium particle groove can bear one iridium particle. Through cooperation of the conveying block and the positioning tool, quick assembly and feeding of the pen point base material are facilitated, the feeding difficulty is reduced, and manual feeding is more labor-saving.

The invention relates to a spot welding clamp (1) comprising a lower welding arm (12) carrying a first electrode support (121) and a first electrode (122), and an upper welding arm (11) carrying a second electrode support (111) and a second electrode (112) for performing a spot welding between a first sheet metal part and a second sheet metal part by bringing the first electrode (122) into contact with the first sheet metal part and the second electrode (112) into contact with the second sheet metal part, the second electrode support (111) comprising an internal passage path for a heat transfer fluid intended to evacuate the thermal energy which accumulates in the second electrode (112) during the welding phases,the upper welding arm (11) comprising an internal supply conduit (111A) for heat transfer fluid to the internal fluid passage path of the second electrode support (111) and a discharge conduit (112A) for heat transfer fluid coming from said internal heat transfer fluid passage path, the second electrode support (111) being mounted in an adjustable manner on the upper welding arm (11), and in that it comprises a rigid fluid connection element (13) secured to the upper welding arm (11).,

The invention belongs to the technical field of welding equipment, and particularly relates to electric automobile body welding equipment which comprises a mechanical arm and a control end arranged on the side wall of the mechanical arm, the mechanical arm is electrically connected with the control end, two welding units are installed at the driving end of the mechanical arm, and each welding unit comprises a shell, the shell is installed at the driving end of the mechanical arm, a plurality of electrode tips are arranged in the shell, a chain driving assembly is installed in the shell, and each electrode tip is provided with an elastic connecting assembly. The problems of oxidation, too large roughness and the like of the electrode tips due to too high high-frequency welding temperature can be avoided as much as possible in the vehicle body resistance welding process, all the electrode tips can be polished, the polishing time can be automatically controlled, meanwhile, the electrode tips can be rapidly cooled, oxidation films are prevented from being generated, the stability of the electrode tips in use is improved, and the service life of the electrode tips is prolonged. And the welding quality is improved.

According to the welding machining device and method for the inner net and the outer net of the filter, the welding machining device comprises the machining machine table, the lifting mechanism, the moving mechanism, the roller electrode, the shaft electrode and the hooping mechanism, and complex spatial spiral movement is simplified into single axial movement of the roller electrode in a joint channel; an expensive and complex high-precision multi-axis linkage numerical control system is not needed, only one common motor is needed to drive a roller electrode to linearly walk along a joint channel, inclined joint welding of the filter metal net is completed, a workpiece can be driven to rotate in a pure mechanical mode, the cost is low, the welding efficiency is high, and through a micro forging and pressing mode in advance, the welding efficiency is high. According to the method, a solid metal strip with the width of about 1-2 mm and without through holes is formed, and the solid strip provides a continuous and uniform contact surface for a subsequent roller electrode, so that a constant resistance and ideal current path is provided, controllable and predictable generation of welding heat is realized, and the problems of pseudo soldering and overburning caused by meshes are greatly reduced.

The utility model belongs to the technical field of steel reinforcement framework machining, and discloses a T-beam web framework single-piece welding device which comprises a pedestal, a first welding mechanism, a second welding mechanism, a third welding mechanism and a clamping mechanism, the pedestal comprises a plurality of positioning groove seats, and the positioning groove seats can be matched with the clamping mechanism to clamp and fix horseshoe long stirrups. The first welding mechanism and the third welding mechanism are arranged on the pedestal in a sliding mode in the first direction, and the second welding mechanism is located between the first welding mechanism and the third welding mechanism and comprises two second welding assemblies moving in the opposite direction or in the opposite direction in the second direction. The first welding mechanism, the second welding mechanism and the third welding mechanism are used for welding all to-be-welded points on horseshoe ribs and long stirrups, automatic welding of T-beam web framework single pieces is achieved, and the welding efficiency and the forming precision are high.

The utility model discloses a welding device and a welding system. The welding device comprises a welding gun; the electrode assembly comprises a first electrode and a second electrode, and the second electrode is suitable for being connected with the welding gun; the positioning block is connected with the first electrode; the correction assembly is suitable for being arranged between the first electrode and the second electrode, the correction assembly comprises a copper electrode, a to-be-welded part is arranged on the copper electrode, the contact end of the first electrode is suitable for being in surface contact with the copper electrode, and the contact end of the second electrode is suitable for being in surface contact with the to-be-welded part. According to the welding device, the end face of the electrode is enlarged, indentations are reduced, the appearance quality problems of welding spot distortion and too deep indentations on the appearance face in the existing manual resistance spot welding process are solved, the situation that the welding spot is distorted due to the fact that the electrode assembly is difficult to be perpendicular to the plane of the piece to be welded is avoided, and the appearance quality of the welding spot is optimized.

A resistance welding device. The device includes: a clamp intended to support an arm including a first part supporting a stationary electrode and a second part supporting a translationally movable electrode, the electrodes being intended to be passed through by an electrical current and to clamp metal elements in order to weld them The movable electrode is configured to move between a working position, wherein the electrodes clamp the metal elements to be welded, and two opening positions making it possible to insert, between the electrodes disposed opposite one another, the metal elements to be welded.

The invention relates to the technical field of resistance spot welding, in particular to a cement telegraph pole reinforcement cage automatic binding and welding integrated device based on PLC control. The device comprises a working rotating disc rotationally connected with a mounting support, a machining channel allowing the reinforcement cage to horizontally penetrate through is formed in the center of the working rotating disc, a conductive wheel and a pressing assembly are arranged on the same side of the working rotating disc, and the conductive wheel, the pressing assembly and the reinforcement cage form a closed conductive loop. When the diameter of the produced reinforcement cage is small, the axial component force applied to the spiral bar by the cylindrical pressing wheel is guided by the inclined plane of the groove, and forced friction is reduced. When the diameter of a produced reinforcement cage is large and the reset slope of the circular truncated cone pressing wheel presses a spiral bar, the acting direction of force is more deviated to the radial direction, the axial component force is reduced, and therefore the axial friction force is reduced. When the reset slope on the periphery of the round table roll welding wheel is in contact with the spiral rib, an inclined contact line along the conical surface is formed.

The invention relates to the technical field of spot welding optimization, in particular to a spot welding optimization method and system based on spacing constraint, and the method comprises the following steps: obtaining welding current flow direction data in the manufacturing of a safety box body, analyzing the distribution condition of current between welding spots, monitoring the surface and surrounding temperatures of the welding spots, and analyzing the heat-conducting property of metal. And identifying the energy diffusion state between the welding spots to obtain the energy distribution characteristics of the welding spots. According to the method, the layout and spacing of the welding spots are adjusted through the heat conduction performance of metal of the safety box body, the stability and consistency of the welding process are further improved, material stress and deformation caused by uneven heating are reduced, temperature changes after welding are analyzed, the welding sequence and path can be optimized, the overheating risk is reduced, and the welding quality is improved. The overall strength and durability of the structure are improved, the welding quality and efficiency are remarkably improved, and the structure is particularly suitable for complex assemblies and advanced materials in the high-standard production environment.

The utility model discloses an electrode holder clamping device which comprises a fixing plate and a static arm fixedly connected to the fixing plate, and the end, away from the fixing plate, of the static arm is fixedly connected with a static electrode. A linear driving device is clamped between the fixing plates, the driving end of the linear driving device is connected with an electrode connecting rod, and one end of the electrode connecting rod is fixedly connected with a movable electrode; a guide pin is fixedly connected to the side wall of the electrode connecting rod, a guide groove is formed in the fixing plate, and the guide pin is inserted into the guide groove in a penetrating mode. The linear driving device comprises a connecting flange, a pin shaft is fixedly connected to the side wall of the connecting flange, an arc-shaped groove is formed in the fixing plate, the pin shaft is inserted into the arc-shaped groove in a penetrating mode, and the pin shaft swings along the arc-shaped groove in the welding process so that the moving electrode swings along with deflection of a workpiece to be kept coaxial with the static electrode. According to the utility model, the movable electrode and the static electrode are kept in a coaxial state before welding and during pressurized welding, so that welded workpieces are kept in good contact, and the welding quality is improved.

The application belongs to the technical field of welding equipment, and discloses a manual butt welding machine. The manual butt welding machine comprises a rack, a left electrode clamping device, a right electrode clamping device and a position adjusting mechanism; the left electrode clamping device, the right electrode clamping device and the position adjusting mechanism are arranged on the rack; the position adjusting mechanism comprises a sliding shaft and a hand crank assembly; the sliding shaft is arranged on the rack and slides along the left-right direction; the sliding shaft is connected with the right electrode clamping device; the hand crank assembly is arranged on the rack and rotates; the hand crank assembly is sleeved on the sliding shaft and is threadedly connected with the sliding shaft; the hand crank assembly can drive the sliding shaft to move leftward and rightward by rotating relative to the rack. The sliding shaft and the hand crank assembly form a screw nut pair, which is compact in structure, occupies a small space and is beneficial to reducing the size of the manual butt welding machine, so that the manual butt welding machine is more flexible in movement and use; on the other hand, the right electrode clamping device can be driven to move by rotating the hand crank assembly, which is convenient and labor-saving and is beneficial to reducing the labor intensity of the operator.

The invention belongs to the field of welding, and particularly relates to an automatic welding machine for automobile parts, which comprises a resistance spot welding gun, an outer attached sleeve is arranged on the outer side of the resistance spot welding gun, the resistance spot welding gun comprises an upper clamping arm and a lower clamping arm which can be opened and closed, and electrode rods are mounted at the ends of the upper clamping arm and the lower clamping arm. An electrode tip capable of being disassembled and assembled is installed at the end of the electrode rod, a replacement wheel capable of horizontally moving and rotating is arranged on the outer side of the outer attached sleeve, and a plurality of disassembling and assembling sleeves used for disassembling and assembling the electrode tip are installed in the replacement wheel. Through the arrangement, the full-automatic disassembly and replacement function of the electrode tip is achieved, and the electrode tip can be replaced in a hollow period after long-term work; and electrode tips with different contact areas can be replaced, so that the spot welding area is changed, the automation level of welding equipment is improved, and a full-automatic high-quality welding process is realized.

The invention relates to the field of welding devices, in particular to a reinforcing mesh welding mechanism for concrete cable trench cover plate machining. The whole device is supported through a bottom plate at the bottom, a supporting frame used for containing a reinforcing mesh is arranged on the bottom plate, an electric resistance welding device used for conducting row welding on the reinforcing mesh is arranged on the bottom plate, and a traction device used for pulling the reinforcing mesh to move is arranged on the bottom plate. The reinforcing mesh is composed of a plurality of transverse reinforcing steel bars and longitudinal reinforcing steel bars alternately located above and below the transverse reinforcing steel bars, an upper discharging mechanism for placing the longitudinal reinforcing steel bars on the transverse reinforcing steel bars is arranged on the bottom plate, and a lower discharging mechanism for abutting the longitudinal reinforcing steel bars against the transverse reinforcing steel bars from the lower portion is arranged on the bottom plate. An upper welding electrode and a lower welding electrode on the electric resistance welding device can both ascend and descend in the vertical direction, and the moving distances of the upper welding electrode and the lower welding electrode before welding are different according to different positions of longitudinal steel bars. By welding the longitudinal reinforcing steel bars which are alternately arranged up and down, the reinforcing mesh can well adapt to bidirectional force, and the overall strength of the reinforcing mesh is improved.

This application discloses a fully automatic assembly and welding device for track pulley rims, relating to the field of track pulley processing technology. It includes an assembly section and a welding assembly. The assembly section includes a conveying assembly and sequentially arranged rim unloading cylinder, lower shim loading assembly, steel ball injection assembly, and upper shim loading assembly. The welding assembly includes an upper welding head and a lower welding head, the distance between which is dynamically adjusted through a mechanism. Both the upper and lower welding heads are equipped with electrode plates for spot welding. An insulating guide pin is elastically provided on the inner side of the first electrode plate. The technical advantages of this application are: the rim unloading cylinder, lower shim loading assembly, steel ball injection assembly, and upper shim loading assembly enable automated assembly of the pulley workpiece; the conveying assembly automatically feeds the assembled pulley workpiece into the welding assembly, completing the automatic integrated assembly of the pulley workpiece; and the use of insulating guide pins enables centering of the assembled pulley workpiece before spot welding, improving the success rate of subsequent automatic welding of the welding assembly.

The invention discloses track welding equipment and a welding method for track welding, and the track welding equipment comprises a bearing vehicle which comprises a bearing platform and a hoisting assembly arranged on the bearing platform; the welding vehicle set is borne by the bearing table, the welding vehicle set comprises a welding locomotive, and the welding locomotive comprises a welding machine and an adjusting assembly; the adjusting assembly comprises a frame, a transverse adjusting assembly, a longitudinal adjusting assembly and a vertical adjusting assembly, the transverse adjusting assembly, the longitudinal adjusting assembly and the vertical adjusting assembly are arranged on the frame, the hoisting assembly can hoist and move the welding vehicle set or the welding machine, and the adjusting assembly can be connected with the welding machine to drive the welding machine to move to a target welding position. Therefore, the position of the welding machine can be flexibly adjusted according to working conditions, and welding operation efficiency is improved.

The invention provides a welding piece for battery welding and a welding device, and belongs to the technical field of welding devices. The welding piece for battery welding comprises a base material made of a conductive material, and the base material is electrically connected with an electrode during welding. A current guide structure is arranged on the base material, and a current path is formed among the multiple layers of tabs or the composite current collector when the current guide structure is welded; the base material is further provided with a temperature sensing assembly, the physical state of the temperature sensing assembly changes within a preset temperature interval, and a temperature feedback signal is output. The welding piece can be used for welding the battery tabs, contact resistance between the tabs (foils) can be reduced or eliminated through the flow guide structure, current conduction during welding is achieved, and therefore the welding quality of the tabs is improved.

The invention provides a brushless motor stator spot welding device. The brushless motor stator spot welding device comprises a machine table, a driving assembly, an execution assembly, a spot welding assembly, a control assembly and an identification assembly. The driving assembly and the spot welding assembly are both installed on the machine table, the execution assembly is arranged on the machine table in a sliding mode and connected with the driving assembly, and the driving assembly drives the execution assembly to reciprocate in the direction close to or away from the spot welding assembly. A bearing table is arranged at one end of the execution assembly and is used for bearing the stator and driving the stator to rotate; the recognition assembly is arranged on one side of the execution assembly, the recognition range covers the bearing table, and stator wire end information can be collected and recognition signals can be output; the spot welding assembly is used for performing spot welding on the stator wire end on the bearing table. The control assembly is in communication connection with the recognition assembly, the driving assembly and the spot welding assembly and can receive and process the recognition signals to judge whether the stator wire heads are single wire heads or double wire heads, matched welding parameters are called based on results, and then the spot welding assembly is controlled to complete spot welding.

The invention discloses a silk screen check ring spot welding machine, and relates to the technical field of silk screen check ring production, the silk screen check ring spot welding machine comprises a main body case, two symmetrically arranged protective doors are hinged to the surface of the main body case, two symmetrically arranged welding guns are mounted at the upper end of the main body case, a placing table is mounted at the upper end of the main body case, and a welding ring is fixed on the placing table; a controller is fixed at the upper end of the main body case, an air pressure processor is fixed at the upper end of the main body case, a current case is arranged on the side surface of the main body case, an air storage tank is fixed at the upper end of the current case, and a current distributor is fixed on the side surface of the current case. The whole welding process is high in automation degree, two point positions can be synchronously welded at a time, the welding current can be automatically adjusted when the last point position is welded, welding of a single welding point is achieved, and therefore welding of sixty three point positions is completed, the manual participation amount in the welding process is small, the production efficiency is greatly improved, and the labor intensity is reduced.

The application relates to an automatic welding equipment and method for H-shaped flat fin tube, which comprises a support, a strip disc arranged on the support, a flat base tube conveying and fixing device, a resistance welding equipment, a fin negative mold and a negative mold driving device; the flat base tube conveying and fixing device comprises a loading roller way, a pressure roller, a driving roller and an unloading roller way arranged in sequence; the pressure roller is connected with a pressure roller driving device; the support is provided with a driving roller driving device; the driving roller is connected with the driving roller driving device through a transmission mechanism; the resistance welding equipment comprises a welding head, an electrode driving device and a welding transformer; the welding head is provided with a resistance welding electrode; the welding transformer is fixedly arranged on the support; the welding transformer is connected with the electrode driving device; and the electrode driving device drives the welding head to move; the application has the advantages of simple structure, automatic feeding, automatic forming and automatic welding of the flat elliptical fin tube, high automation degree and high efficiency.

The invention discloses a double-end spot welding machine and a spot welding method thereof. The double-end spot welding machine comprises a spot welding mechanism, a multidirectional conversion driving mechanism, an X / Y guide rail assembly and a traction rod. The multi-directional conversion driving mechanism has the beneficial effects that the traction sliding seat connected with the traction rod is used as a traction part to convert the opening and closing action of the multi-directional conversion driving mechanism into the opposite movement action or the back movement action of the two X guide rails, so that the use of a linear motor is omitted, and the overall structural space layout is further simplified; the synchronous stability of movement adjustment limited to spot welding is guaranteed, spot welding distribution is uniform, and the quality is high; the problem that the automobile shell plate is inconvenient to manually turn over for spot welding is solved, and the spot welding efficiency is high; the requirement range of spot welding using objects is enlarged, the adjusting flexibility is high, the spot welding connecting requirement between the large-specification plates can be met, meanwhile, the firm strength of connection between the two large-specification plates is enhanced, and the probability of bulging and other adverse problems caused by the too large interlayer gap in the later period is reduced.

The application discloses a stroke trigger type welding device and method, belongs to the field of high-speed wire welding, and comprises a support, a mounting plate slidably connected to one side of the support, a welding part fixedly connected to one side of the mounting plate, a motor fixedly connected to one side of the support, a restraint groove is formed in the mounting plate, a rotating disc is rotatably connected to one side of the support, a seat body is fixedly connected to one side of the rotating disc, a roller is rotatably connected to one side of the seat body, the roller is located in the restraint groove, a base is also fixedly connected to one side of the mounting plate and extends into the restraint groove, and an output shaft of the motor is connected with the rotating disc; the material scraping seat on the seat body can scrape off the paste on the outer surface of the rotating roller, after scraping, the frictional resistance is restored from nonlinear and sudden viscous resistance to linear and stable sliding or rolling friction, the single-stroke lifting movement of the mounting plate is more stable, and the crawling phenomenon of jamming is avoided.

The invention relates to the technical field of electric resistance welding, in particular to a robot nail planting double-face spot welding device and method. The invention provides a robot nail planting double-face spot welding device which comprises a main body bearing frame fixed to the movable end of a welding robot and a nail planting welding assembly arranged on the main body bearing frame, and the nail planting welding assembly comprises an upper electrode column, a lower electrode column and a lower electrode column, the upper electrode cylinder is arranged below the workpiece and is used for bearing the planting nail; the lower electrode column is rotationally arranged at the lower end of the upper electrode cylinder. Based on the electric resistance welding principle, parameter self-adaptive matching is achieved through the welding current adjusting assembly and the welding pressure adjusting assembly. The current adjusting assembly converts a nail planting diameter signal into pneumatic drive, adjusts the electrode contact area, and ensures resistance thermal adaptation. The pressure adjusting assembly changes the lever fulcrum and dynamically adjusts the pressure. The problems of pseudo soldering, burning loss and the like caused by parameter unification of traditional equipment are solved, and the strength and stability of welding spots are improved.

The invention relates to a method for processing and joining bipolar plates (10) which are provided with sealing seams (56) for sealing between an active area (14) and media ports (18, 20, 22, 24, 26). At least the following process steps are carried out: In process step a), a warped bipolar plate (10, 54) is provided in a processing and joining station (28); in process step b), processing tools (34, 38) and joining tools (31) are positioned against the warped bipolar plate (10, 54) such that the joining tools (31) exert a holding and joining force (64) on the warped bipolar plate (10, 54). According to process step c), the machining tools (34, 38) contact the distorted bipolar plate (10, 54) and produce a plastic deformation (68) of the distorted bipolar plate (10, 54) by means of a straightening force (62).Subsequently, in process step d), a material-bonded electrical contact (82) is created on one side of the previously straightened bipolar plate (10, 84). Following process step e), the processing and joining station (28) is opened (78, 80) and the joined and straightened bipolar plate (10, 84) is removed.

The utility model discloses battery bottom welding equipment and production line, battery bottom welding equipment comprises a conveying mechanism, a driving mechanism, a hot broaching mechanism, a center hole detection mechanism and a welding mechanism, the driving mechanism comprises a driving main shaft and a plurality of cam connecting rod parts, and the driving main shaft drives the plurality of cam connecting rod parts to move; the multiple cam connecting rod components can drive the reaming component and the negative electrode welding pin to move, the reaming component and the negative electrode welding pin use the same power source, and the stability of equipment operation is improved. And the heated reaming part irons the center hole, so that the center hole can be expanded and subjected to thermoplastic molding, and a welding needle can be conveniently inserted. The center hole detection mechanism detects the center hole before welding and judges whether the center hole of the battery meets the requirement for insertion of the welding pin or not. The welding mechanism comprises a positive electrode welding needle, a negative electrode welding needle and a first driving component, the first driving component drives the positive electrode welding needle to move, the cam connecting rod component drives the negative electrode welding needle to move, welding of the battery cell bottom and the steel shell is completed, and the welding effect is guaranteed.

The application discloses a thin window sealing method of a particle detector, which comprises the following steps: arranging a clamp on a device support, clamping a thin window by using a sealing assembly, clamping the sealing assembly by using the clamp, fixing the clamp on the device support, and welding the sealing assembly by using a welding device, wherein the clamp is continuously and uniformly rotated during the welding until the thin window to be sealed is completely sealed in the sealing assembly. The clamp is used to press the sealing assembly and the thin window clamped by the sealing assembly, so that the tightness and the sealing property of the sealing assembly during subsequent welding are guaranteed. The clamp is fixed to fix the sealing assembly and the thin window to be sealed, so that the position stability of the sealing assembly and the thin window to be sealed during the welding of the sealing assembly is guaranteed. Meanwhile, the clamp is continuously and uniformly rotated during the welding of the sealing assembly, so that the welding points present the shape of fish scale welding, the uniformity of the welding points is guaranteed, the structural strength of the welding position is improved, and then the structural strength of the sealed thin window is improved, so that the thin window is not prone to deformation.

The utility model discloses a projection welding device for a nut plate and a plate electrode, which belongs to the technical field of projection welding electrodes, and comprises a nut electrode holder and a nut electrode cover, and a conical compression spring and a KCF positioning pin are arranged in the nut electrode holder and the nut electrode cover. According to the utility model, through differentiated electrode structure design, one side of a thinner welding workpiece is contacted by a smaller electrode, and one side of a thicker welding workpiece is contacted by a larger electrode, so that current can be concentrated on the thin plate side as required, accurate deviation of nuggets is realized, the welding precision is improved, and the production efficiency is improved. Meanwhile, the depth of fusion and nugget at the projection welding spot of the workpiece are obviously increased due to the increase of the current density and the concentration of heat, and the welding strength and reliability are enhanced; the electrode material is changed on the basis of changing the electrode structure, and the beryllium copper electrode with larger resistance is adopted on one side of the thin plate, so that the welding heat on the side of the thin plate is increased.

A spot welding assembly for welding a first work piece to a second work piece. The spot welding assembly includes a base. A base electrode is coupled with the base for supporting the first work piece. A welding gun is moveable toward and away from the base. A gun electrode is coupled with the welding gun for supporting the second work piece and for locating the second work piece against the first work piece upon movement of the welding gun toward the base to allow the first and second work pieces to be welded to one another. The base electrode is rotatable and pivotable relative to the base, and the gun electrode is rotatable and pivotable relative to the welding gun.

The invention relates to the field of welding, in particular to a welding robot for welding a vehicle body and an electrode cap grinding method. The welding robot comprises a welding robot body, and a welding gun is arranged on the welding robot body; the device further comprises a coaxial electrode cap coping mechanism and a non-coaxial electrode cap coping mechanism, the coaxial electrode cap coping mechanism and the non-coaxial electrode cap coping mechanism are used for coping electrode caps of the C-shaped welding gun and the X-shaped welding gun respectively, the coaxial electrode cap coping mechanism and the non-coaxial electrode cap coping mechanism comprise two coaxial coping modules and two non-coaxial coping modules respectively, and each coping module comprises two oppositely-spliced coping units. And the two butt-joint grinding units are close to each other and sleeve the electrode cap in a butt-joint manner for grinding. According to the welding gun, the two electrode caps are wrapped at the same time in a splicing mode, the welding gun can adapt to grinding of the two electrode caps with the small distance, the angle and the position of the welding gun do not need to be repeatedly adjusted to complete grinding of the electrode caps, grinding is more efficient, two non-coaxial electrode caps can be ground at the same time, and the application range is wider.

The purpose of the present invention is to improve the quality of dimples when resistance spot welding is continuously performed on different metals. A resistance spot welding method for joining pieces to be welded by sandwiching the pieces to be welded in which a plurality of metal members are overlapped with each other between a pair of electrodes and energizing the pieces to be welded, the resistance spot welding method comprising: a pre-energizing step for preheating the pieces to be welded by energizing between the pair of electrodes; and a main energization step, which is performed after the pre-energization step, and in which energization is performed between the pair of electrodes, thereby forming nuggets on the material to be welded and joining the material to be welded, the energization time of the main energization step being shorter than the energization time of the pre-energization step, and the energization time of the main energization step being shorter than that of the pre-energization step. The current value of the welding current in the main energization step is greater than the current value of the welding current in the pre-energization step.

The spot welding machine for motor manufacturing comprises a fixing structure, an adjusting structure, a clamping structure and a power structure, the adjusting structure is fixedly connected to the outer side surface of the fixing structure, the clamping structure is arranged on the outer surface of the fixing structure, and the power structure is arranged on the inner surface of the fixing structure. The fixing structure comprises a supporting unit, a transmission unit and a carrying unit, the transmission unit is fixedly connected to the front side surface of the supporting unit, and the adjusting structure comprises a front-back adjusting unit, an up-down adjusting unit and a motor unit. According to the spot welding machine for motor manufacturing, the gear motor is arranged, the gear motor is started, when the gear motor rotates, two sawtooth connecting plates are made to move inwards, so that clamping plates are driven to move front and back to clamp a motor shell, the motor shell needing to be machined can be fixed, the motor shell is prevented from being unstable in the machining process, and the machining quality is improved. The device has the characteristics of being high in practicability and capable of achieving automatic clamping.