1038 results about "Electric resistance welding" patented technology

The invention provides a reinforcing mesh multi-welding-spot quality detection method and system based on infrared thermal imaging. Wherein for each crossed steel bar welding spot, the fusion form of the crossed steel bar welding spot is identified based on the thermal radiation image; based on the fusion forms of all the crossed steel bar welding spots, quality detection results of the multiple welding spots of the steel bar mesh are generated, and the quality detection results comprise geometric judgment results used for representing whether the fusion forms meet preset form requirements or not; and according to the quality detection result, a corresponding early warning mode is adopted for self-adaptive early warning, and welding parameters adopted by the next electric resistance welding process are adjusted according to early warning information. According to the technical scheme provided by the invention, millisecond-level multi-welding-spot synchronous quality detection and process closed-loop optimization are realized, and the production yield and the process adaptability of the large reinforcing mesh are greatly improved.

The invention discloses automatic resistance welding equipment for beer filter sieve tubes, which belongs to the technical field of welding of beer filter sieve tubes and comprises a sieve tube feeding and discharging mechanism, a top seat feeding mechanism and a resistance welding mechanism. The screen pipe feeding and discharging mechanism comprises a screen pipe feeding mechanism used for feeding screen pipes, the screen pipe feeding mechanism is installed on one side of the top of a feeding and discharging base, two second jacking air cylinders are arranged on the other side of the top of the feeding and discharging base side by side, and V-shaped bearing blocks are installed at the telescopic ends of the second jacking air cylinders. A first finger air cylinder is installed on the air cylinder installation frame, and two fingers of the first finger air cylinder are each provided with a clamping jaw. Feeding and discharging of the screen pipe can be automatically completed through the screen pipe feeding and discharging mechanism, efficient feeding of a top seat can be completed through the top seat feeding mechanism, butt joint and welding of the screen pipe and the top seat can be automatically achieved, the overall structure is simple, finally, the whole welding process is more efficient, and manual operation is replaced.

The invention discloses a double-metal band saw blade cylindrical tooth tip welding device and method, and relates to the technical field of double-metal band saw blade welding. A double-metal band saw blade cylindrical tooth top welding device comprises a base, a guide mechanism, a feeding mechanism, a material distributing mechanism, a taking and conveying mechanism, a welding head and a clamping mechanism. An output shaft of the feeding mechanism rotates and drives the material distributing mechanism to conduct intermittent material distributing, and the taking and conveying mechanism drives the welding head to take the cylindrical tooth tips on a discharging port of the material distributing mechanism and convey the cylindrical tooth tips to the to-be-welded sawteeth of the back material to be welded. The guide mechanism, the feeding mechanism, the material distributing mechanism, the taking and conveying mechanism, the welding head and the clamping mechanism are used in cooperation, so that an existing multi-degree-of-freedom manipulator or a multi-axis motion platform can be replaced to complete resistance welding of the bimetal band saw blade tooth tip, and the automation degree and the equipment cost of the resistance welding device are both considered; and the automation degree and the production efficiency of resistance welding of the double-metal band saw blade cylindrical tooth tip are effectively improved.

A first electrode coolant path is configured to cool a first welding electrode by liquid coolant flowing from a supply path through the first electrode coolant path to a return path. A second electrode coolant path is configured to cool a second welding electrode by liquid coolant flowing from the supply path through the second electrode coolant path to the return path. Three or more valves are configured to stop or reduce liquid coolant flow through the first or second electrode coolant path and configured to stop or reduce liquid coolant backflow from the return path when the first or second welding electrode is at least partially detached. At least one valve is coupled in the first or second electrode coolant path. A drawback apparatus generates a suction force to draw liquid coolant away from a gap formed when the first or second welding electrode is at least partially detached.

The invention relates to the technical field of intelligent monitoring, regulation and control of welding process parameters, and particularly discloses an intelligent regulation and control method and system for resistance welding process parameters of a junction box. Abnormal pressure applying links in the welding process are recognized, and the low-risk pressure applying process is extracted for welding; after welding is completed, the strength and size indexes of welding spots are evaluated through welding spot quality detection, the welding spot quality deviation coefficient is calculated, and whether the welding quality reaches the standard or not is judged; and for the welding spots with unqualified welding quality, the system calculates the adjustment direction and range of the pressure parameters through an optimization algorithm, test welding is conducted according to the optimized parameters, and the improvement effect of the pressure applying process is verified in real time till the welding spot quality meets the preset standard.

The invention relates to the field of voltage dependent resistor welding equipment, in particular to a voltage dependent resistor welding device which is characterized in that a triangular block, a pushing block, a driving assembly and a lifting assembly are matched with one another, in the fixing and butt joint process of the voltage dependent resistor, the voltage dependent resistor is extruded, and pins of the voltage dependent resistor are expanded, supported and bent through the triangular block; and the pins of the piezoresistor are aligned with the jacks on the circuit board, so that the piezoresistor and the circuit board can be quickly butted, and the welding efficiency of the piezoresistor is improved. According to the invention, the triangular block, the pushing block, the driving assembly and the lifting assembly cooperate with each other, and the piezoresistor is extruded in the process of fixing and butting the piezoresistor, so that the triangular block expands and bends the pins of the piezoresistor, and the pins of the piezoresistor are aligned with the jacks in the circuit board; rapid butt joint of the piezoresistor and the circuit board is facilitated, and the welding efficiency of the piezoresistor is improved.

A temperature and pressure sensor comprises a shell, and a plug assembly is arranged on the upper portion of the shell. A circuit board, a ceramic capacitor, a resistor support and a thermistor are sequentially arranged in the shell from top to bottom, a plurality of contact pins are installed in the plug assembly, the lower ends of the contact pins are connected with the circuit board through tin soldering, and the circuit board is connected with the ceramic capacitor through tin soldering; the thermistor and the resistor support are connected in a resistance welding mode. The upper end of the resistor support is electrically connected with the ceramic capacitor. Wherein the temperature function and the pressure function are integrated, two electrodes are arranged at the bottom of the ceramic capacitor and elastically connected with contacts of the resistor support to form electrical contact, two pins are additionally designed on the front face of the ceramic, and the pins are communicated with the two electrodes at the bottom of the ceramic respectively, so that the function of leading out temperature and resistance signals is achieved.

The invention belongs to the technical field of high-speed line welding, and particularly relates to an electric resistance welding machine head and electric resistance welding device.The electric resistance welding machine head comprises a mounting frame, an air cylinder and a displacement sensor which are fixedly connected to one side of the mounting frame, a movable base connected to one side of the mounting frame in a sliding mode and a first welding head fixedly connected to one side of the movable base, and the telescopic end of the air cylinder is connected with one side of the movable base; the air cylinder and the displacement sensor are adopted, the displacement sensor and the air cylinder are high in response speed and are matched with each other to achieve stroke control welding, the welding head is driven to conduct welding in a stroke triggering mode, the welding state is confirmed through the position, and the air cylinder controls displacement and monitors the displacement amount to ensure welding consistency; and the welding precision, the welding stability and the service life of the pressure welding machine head structure are superior to those of a pressure welding machine head structure in the prior art.

The invention discloses an air inlet pressure and temperature sensor resistor and shell assembling device which comprises a divider rotary table, a tool, an operation opening, a forming pin, a shell feeding mechanical arm, a resistor feeding mechanical arm and a shaping die. An operation opening used for opening a resistor pin is formed in the tool, the divider rotary table is provided with a forming pin in butt joint with the operation opening, the forming pin is used for directionally bending the resistor pin, and the tool is in butt joint with the shell feeding mechanical arm and the resistor feeding mechanical arm. By means of the mode, according to the air inlet pressure and temperature sensor resistor and shell assembling equipment, pre-shaping treatment is conducted on resistor pins through the shaping die, fine fixed-point bending operation on the pins is accurately achieved through the forming pins, and resistor welding and UV curing stations are integrated in the whole machine; the automatic production and processing of the resistance part of the air inlet pressure sensor are efficiently realized, and the productivity and the yield are obviously improved.

The utility model relates to the technical field of batteries, and discloses a battery and a battery pack, the battery comprises a pole piece, the pole piece comprises a composite current collector, the composite current collector comprises at least one composite material layer made of an insulating material and a conductive layer arranged on at least one side surface of the composite material layer; tabs are formed on the pole pieces; the pole post is provided with a welding surface which is in welding connection with the tab; the welding surface is provided with a puncture part, and the puncture part is suitable for puncturing the composite material layer and is in contact with the conductive layer; the thickness of the composite current collector is D, the thickness of the composite material layer is L, the included angle between the side surface of the puncture part and the welding surface is A, and L / (D.A) is more than or equal to 0.00625 and less than or equal to 0.085. According to the battery provided by the utility model, before the pole and the tab are welded, the pole and the tab are pressed tightly, so that the puncture part can puncture the composite material layer and is in contact with the conductive layer; and therefore, the pole and the tab form a conducting loop, and resistance heat is conveniently generated when current passes through a weldment and a contact part during resistance welding.

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.

The invention discloses a storage battery busbar welding device, and belongs to the technical field of busbar welding, the storage battery busbar welding device comprises a frame body device, the frame body device is used for driving a to-be-welded storage battery to move, two discharging devices and two resistance welding devices are arranged on the frame body device, the discharging devices are used for discharging the to-be-welded busbar to electrodes of the storage battery, and the resistance welding devices are used for welding the to-be-welded busbar to the electrodes of the storage battery. The resistance welding device is used for welding the busbar to the electrode of the storage battery. The storage battery is conveyed through the conveying mechanism, the busbar is automatically placed on an electrode of the storage battery through the placing device and the resistance welding device, then the busbar is welded to the electrode, meanwhile, the storage battery is straightened through the limiting mechanism in the moving process, the busbar is aligned to the electrode through the straightening mechanism, the automation degree is high, and the welding efficiency is high. The continuity is good; and the positions of the placing frame, the placing frame, the welding frame, the lifting block, the sliding frame and the pressing frame can be adjusted, so that storage batteries of different sizes and busbars of different lengths can be welded, and the adaptability is wide.

The invention belongs to the technical field of battery resistance welding, particularly relates to an automatic cleaning and recycling device for welding slag in the battery resistance welding process, and aims to solve the problems that the welding slag after splashing and melting is easy to adhere to the surface of a battery to form hard residues after being cooled, so that the welding slag cannot be cleaned and collected easily. A sliding groove fixing frame is fixedly connected to the upper portion of the resistance welding tool table. The control box is arranged below the resistance welding tool table, a limiting rail is slidably connected to the sliding groove fixing frame, and a lifting sliding seat is slidably connected to the interior of the limiting rail; the welding air cylinder is fixedly connected to one side of the limiting rail. The automatic cleaning and recycling device for the welding slag in the battery resistance welding process has the effects that splashing molten metal is blocked, meanwhile, hard residues are prevented from being formed on the surface of a battery module due to cooling of the molten metal, and cleaning and collecting of the welding slag generated in the battery resistance welding process are facilitated.

The invention discloses a resistance spot welding quality monitoring method and system based on edge calculation, and the method comprises the steps: obtaining the welding voltage data of a resistance spot welding machine and the welding current data of the resistance spot welding machine, and constructing a welding dynamic resistance curve of the resistance spot welding machine; based on the welding dynamic resistance curve of the resistance spot welding machine and a Tensor Flow framework, an embedded neural network model is constructed; and on the basis of the embedded neural network model, welding spot quality prediction is conducted on the welding dynamic resistance curve of the resistance spot welding machine, and a welding spot quality prediction result is obtained. Dynamic resistance data and spot welding quality characteristics in the spot welding process can be automatically extracted, and the welding quality detection precision of the resistance spot welding machine is improved. The resistance spot welding quality monitoring method and system based on edge calculation can be widely applied to the technical field of intelligent detection of resistance welding manufacturing.

A dampening device that can be coupled to a medical implant to eliminate harmful electrical oscillations. The device includes circuity that detects harmful electrical oscillations in the implant. The device also includes circuity that generates cancelling electrical signals that counter the detected electrical oscillations. Alternatively, in a medical implant having a taper junction such as a standard hip implant, resistance welding of the taper junction just prior to surgical implanting may be performed after the appropriately dimensioned components are selected to eliminate a metal on metal interface where corrosion is most likely to occur.

The invention discloses a convex spot welding method for a negative collector plate of a large cylindrical lithium battery. The convex spot welding method comprises a resistance welding needle, a battery cell, the collector plate, a steel shell, a resistance welding lower electrode, a circular convex point structure and an elliptical convex point structure, the current collecting plates are divided into a positive current collecting plate and a negative current collecting plate, and the negative current collecting plate comprises a negative current collecting plate with a convex point design, a negative current collecting plate with a round convex point design and a negative current collecting plate with an elliptical convex point design. The welding area of the negative electrode collector plate is designed to be of a convex point type structure, the pseudo soldering rate of the bottom of a resistance welding spot is reduced, the welding area of the bottom of the spot is increased, the internal resistance of the battery is reduced, the purpose of low charging and discharging temperature rise is achieved, the safety performance is improved, and high-rate charging and discharging can be achieved.

An automobile wire harness connector resistance welding fixing tool is arranged on a workbench of a resistance welding machine and used for fixing a wire harness connector and an automobile wire harness between an upper electrode and a lower electrode of the resistance welding machine, the fixing tool comprises a sliding guide rail and a clamping module, the sliding guide rail is fixedly connected with the upper side surface of the workbench, and the clamping module is fixedly connected with the workbench. Comprising a left sliding rail and a right sliding rail, the clamping module comprises a left clamping block and a right clamping block, the left clamping block is in sliding connection with the left sliding rail, the right clamping block is in sliding connection with the right sliding rail, the upper side, facing an upper electrode, of the left clamping block is provided with a movably-connected left clamping cover, and the upper side surface of the left clamping block is provided with a connector groove; the upper side, facing the upper electrode, of the right clamping block is provided with a movably-connected right clamping cover, the upper side surface of the right clamping block is provided with a wire harness groove, the left clamping block and the right clamping block move towards the lower electrode and are attached to each other, and the wire harness connector and a battery cell of the automobile wire harness can be stably fixed between the upper electrode and the lower electrode.

The invention relates to the technical field of automobile pressure sensor assembly, in particular to a sensor pin composite welding device which comprises a workbench, a conveying line transversely installed at the top end of the workbench and a supporting plate transversely installed on the table top of the workbench, and the supporting plate is arranged on the front side of the conveying line in parallel. The machine further comprises jigs, an electric resistance welding mechanism, a laser welding mechanism and a positioning mechanism, the multiple jigs are driven by the conveying line to do annular motion, and the jigs are supported by the supporting plate when moving to the position above the workbench. The resistance welding mechanism is installed at the top end of the workbench and arranged in the middle of the conveying line. The laser welding mechanism is installed on the table top of the workbench and arranged at the right end of the conveying line. The positioning mechanism is transversely installed on the conveying line and used for positioning the jig on the supporting plate. The welding device is simple in structural design and firm in welding, and the welding quality consistency can be guaranteed.

Disclosed is a battery module improved in efficiency of resistance welding and bonding reliability. The battery module includes a plurality of secondary batteries, each having electrode terminals; a module housing having an inner space configured to accommodate the plurality of secondary batteries; and a bus bar including a body portion having a metal plate configured to electrically connect the plurality of secondary batteries to each other and a connection portion extending from the body portion to contact the electrode terminal. Each of the first connection portion, the second connection portion, and the third connection portion has at least one welding point.

The invention provides a method and a system for regulating and controlling welding current of an inverter resistance welding machine in real time. The method comprises the following steps: welding and acquiring a primary side current signal of a transformer; carrying out segment processing on the current signal of the current cyclic wave; processing and calculating a fast rising section; judging a starting point of a slope section; calculating the target peak current of the slope section; calculating a current cyclic current statistical value; and adjusting the target peak current of the next cycle. Primary side current signals of the inverter type welding machine are collected in real time, segmentation processing and characteristic quantity extraction are conducted on the current signals, the starting point of the slope section is judged, and the target peak current of the slope section is calculated according to a current target value; when the current of the slope section reaches the target peak current, the welding current is cut off; calculating a current statistical value in the current cycle, comparing the current statistical value with a current target value, and adjusting the target peak current of the next cycle; and the steps are repeated until the welding power-on time reaches the preset value, and therefore real-time fine control over the welding current is achieved.

The invention belongs to the technical field of electric resistance welding, and discloses an electric resistance welding device. The electric resistance welding device comprises a first electrode, a second electrode and an elastic piece. The second electrode and the first electrode are mutually insulated, the first electrode comprises an inner electrode, the second electrode comprises an outer electrode, the outer electrode is coaxially and slidably sleeved outside the inner electrode, one end of the inner electrode is provided with a first pressure welding part, one end of the outer electrode is provided with a second pressure welding part, and the first pressure welding part and the second pressure welding part are located at the same end in the axis direction. The first electrode is further connected with the second electrode through an elastic piece, and when the first pressure welding part abuts against the first welding piece in a pressing mode, the first electrode pushes the second electrode in the same direction through the elastic piece so that the second pressure welding part can abut against the second welding piece in a pressing mode. The outer electrode is coaxially sleeved outside the inner electrode, the structure is compact, radial and axial spaces are saved, and the outer electrode and a welding structural member can be conveniently positioned through mutual flexible connection of the elastic member.

An electric resistance welded pipe or tube comprises a weld portion in a pipe or tube longitudinal direction, wherein a maximum value of a wall thickness distribution of the weld portion is less than or equal to 1.05 times an average wall thickness of the electric resistance welded pipe or tube, a width of a weld metal in the weld portion in a circumferential direction is 1 μm or more and 800 μm or less over an entire thickness of the electric resistance welded pipe or tube, and a ratio of a maximum value to a minimum value (=maximum value / minimum value) of the width of the weld metal is 1.0 or more and 2.5 or less.

The invention discloses a through needle temperature and pressure sensor and an assembly process, and relates to the technical field of temperature and pressure sensors, and the sensor comprises a ceramic pressure core body and an NTC assembly. An NTC (Negative Temperature Coefficient) through needle for outputting a temperature signal is arranged on the ceramic pressure core body in a penetrating manner; the NTC assembly comprises an NTC chip, a lead wire sleeve, a fixing seat and a metal sheath, a lead wire of the NTC chip is sleeved in the lead wire sleeve and extends out to be arranged through the fixing seat, and the metal sheath is sleeved outside the lead wire sleeve and the NTC chip and is fixed on the fixing seat; the lead of the NTC chip is connected with the NTC through pin through electric resistance welding, so that the connection reliability is improved, and meanwhile, the soldering tin rosin is prevented from sputtering to pollute the fixed seat and the ceramic pressure core body; the structure of the temperature pressure sensor is simplified, the reliability of electric connection is improved, and a signal path is rationalized through lead wire arrangement, metal sheath protection and electric resistance welding direct connection; the problems of complex structure, circuit virtual connection and low reliability of the existing temperature and pressure sensor are effectively solved.

The invention discloses cutter handle resistance welding equipment and a welding process, and relates to the technical field of PCB cutter machining. The device comprises a welding table, machining bases, vibration discs, a heating box and a grinding mechanism, the two machining bases arranged in a mirror image mode are fixed to the table top of the welding table, the vibration discs are fixed to the positions, located on the inner sides of the machining bases, of the table top of the welding table, and the heating box is fixed into a first groove, a second groove and a third groove which communicate with one another; and a group of uniformly distributed No.2 heating pipes are fixed in an inner cavity of each side box plate of the heating box. The preheating box is additionally arranged at the feeding part, the cooling speed after welding can be reduced, cracks are prevented from being generated, welding stress is reduced, welding defects are reduced, the workpiece quality is improved, excessive time and procedures are not consumed, the production efficiency is improved, in addition, after-heat treatment can be conducted on the welded workpiece, hydrogen escape is facilitated, delayed cracks are prevented, and the welding quality is improved. And the welding quality is further improved.

The invention relates to the technical field of resistance welding, and provides a spot welding method and system for indicative fuse production, and the method comprises the steps: carrying out the test welding of a fuse, and obtaining a welding spot image; carrying out edge detection on the welding spot image, carrying out welding spot outer contour roundness and smoothness analysis and welding spot internal gradient distribution analysis, and determining the welding spot outer contour quality and the welding spot surface defect degree of test welding; the welding spot outer contour quality and the welding spot surface defect degree of test welding are judged, so that electric welding parameters are adjusted; constructing a welding quality regression model through multiple times of test welding and adjustment of electric welding parameters; and for test welding, electric welding parameters are continuously adjusted through the welding quality regression model, and spot welding of follow-up fuse production is carried out. The invention aims to optimize the process of improving the spot welding effect by adjusting the parameter control of the electric welding machine through multiple times of test welding.

The present invention discloses a welding machine, including a product conveying mechanism, a product transfer mechanism, a grinding and cleaning mechanism, a resistance welding device and an optical adjustment mechanism. The welding machine moves the product to the resistance welding device for welding by moving the product but fixing the resistance welding device, thereby avoiding the potential safety hazards caused by moving the resistance welding device. After welding is completed, the product can also be quickly transferred to other production processes through the product conveying mechanism, which is suitable for factory assembly line production operations. The electrode surface welding points are cleaned by grinding and the dust and dirt on the electrode surface are adsorbed by negative pressure to clean the electrode surface, thereby avoiding the welding points and dust affecting the welding quality. It is also possible to judge whether the detection accuracy of the distance sensor is good based on the difference between the second distance and the first distance and the difference between the thickness of the second slider and the thickness of the first slider.

The utility model relates to the technical field of transformer production equipment, and in particular to a resistance welding device, including a resistance welding structure, a fixing structure and a clamping structure; the fixing structure includes a fixing plate and an upper plate surface thereof, on which a first fixing seat for fixing the coil body of the transformer and a second fixing seat for fixing the wiring terminal of the transformer are installed, the wiring terminals of the wiring terminal are overlapped with the wiring terminals of the coil body, overlapped with each other and provided with welding pieces, and the resistance welding structure is used for double-sided double-spot welding of the overlap and the welding piece; the clamping structure includes an adjustment component and a driving component respectively used to adjust the position and movement of two clamping fixtures, and the two clamping fixtures move closer to each other to clamp the overlap and both sides of the welding piece. The utility model adopts the double-sided double-spot overcurrent welding technology of the resistance welding structure, and at the same time, adds a fixing structure and a clamping structure to take corresponding positioning measures to avoid the problem of welding piece misalignment, which can ensure the welding quality and improve the overall performance of the transformer.

The utility model discloses a solar battery semi-automatic resistance welding device which comprises a machine table, a welding platform transplanting mechanism, a battery piece welding machine and a visual inspection assembly are installed on the upper side of the machine table, the welding platform transplanting mechanism comprises a guide rail and a lead screw sliding table a, and a carrier plate a is installed on the guide rail. The lead screw sliding table a drives the carrying plate a to move linearly along the guide rails, the lead screw sliding table b is fixedly installed on the upper side of the carrying plate a, the lead screw sliding table b and the lead screw sliding table a are perpendicular in different planes, the table plate is installed on the lead screw sliding table b, the upper side of the table plate is used for clamping the welding jig, and the vacuum connector is installed on the table plate. The upper side of the welding jig is provided with a plurality of sets of material placing holes which are in profiling with battery pieces and diodes, and the material placing holes are used for adsorbing and fixing materials after air suction is started. Manual material taking and placing, CCD vision assisted positioning and automatic welding are adopted, the manual operation is only responsible for adding raw materials and recycling finished products, the production efficiency is improved, and the production cost is reduced.

The utility model belongs to the technical field of automatic welding, and particularly relates to a resistance welding electrode and a resistance welding device. The electric connector comprises a lower electrode, the top surface of the lower electrode is provided with a lower semi-circular groove and a terminal groove, the lower semi-circular groove penetrates through the terminal groove, the lower semi-circular groove is matched with a copper wire, the terminal groove is matched with an insertion spring terminal, and the terminal groove is provided with a positioning protrusion corresponding to a hollow hole of the insertion spring terminal; the bottom surface of the upper electrode is also provided with an upper semicircular groove and a receding groove, the upper semicircular groove is matched with the copper wire, a cavity of the receding groove corresponds to the insertion spring terminal, the size of the cavity of the receding groove is larger than or equal to that of the insertion spring terminal, and a pressing groove is further formed between the upper semicircular groove and the receding groove. The welding electrode is used for solving the technical problem that the welding efficiency is reduced due to the fact that the welding electrode of the resistance welding machine in the prior art cannot quickly and accurately position a copper wire and an insertion spring terminal.

The invention discloses a vehicle body bottom plate assembly resistance welding device, and relates to the technical field of welding devices.The vehicle body bottom plate assembly resistance welding device comprises a workbench, a first welding piece and a second welding piece, the surface of the workbench is rotationally connected with a rotating platform, the first welding piece is placed on the rotating platform, and the second welding piece is placed on the first welding piece; a mounting frame is fixedly mounted on one side of the workbench, and a welding assembly for welding the first welding part and the second welding part is arranged on the mounting frame. According to the resistance welding device for the vehicle body bottom plate assembly, a driving motor is started to drive a first gear and an outer gear ring to rotate, then a rotating platform rotates synchronously, through the design, an electrode piece can conduct all-dimensional welding on a welding piece on the rotating platform more conveniently, and the welding flexibility and uniformity are improved; and by controlling the sliding rod to move and cooperating with the moving seat, the rotating plate and the cleaning plate, automatic cleaning of the outer wall of the electrode part is achieved, and the cleaning efficiency and effect are improved.