55results about How to "Convenient welding work" patented technology

The invention provides automatic welding equipment for cabinet processing, which comprises a welding robot and a workbench, and further comprises a pressing and positioning mechanism arranged on one side of the workbench and a cleaning mechanism arranged on the workbench, the pressing and positioning mechanism comprises a sliding rail fixed to one side of the workbench, a moving base arranged on the sliding rail in a sliding mode, a mounting base fixed to the moving base, a rotating shaft rotationally arranged on the mounting base, a supporting plate fixed to one end of the rotating shaft and an electromagnet arranged on the supporting plate. The electromagnet is used for adsorbing and fixing a workpiece to be welded, and the pressing and position adjusting mechanism further comprises a position adjusting assembly used for driving the rotating shaft to rotate so that the supporting plate can be switched between the horizontal posture and the vertical posture; the problems that in existing equipment, workpiece pressing and adjusting are inconvenient, interference is likely to happen in the welding process, and the welding slag cleaning efficiency of a workbench is not high are solved.

The utility model discloses an auxiliary welding device for a goods shelf frame, which belongs to the technical field of goods shelf welding and comprises a base and a workbench, the base and the workbench are arranged in an abutting mode, a bottom plate is arranged at the bottom of the workbench, a fixing frame is fixedly arranged on the bottom plate, and a movable groove and an annular groove are formed in the top of the workbench. A second sliding plate and a first sliding plate are slidably arranged in the movable groove and the annular groove, and a mechanical arm is mounted on the first sliding plate; according to the welding device, the first sliding plate sliding in the annular groove and the second sliding plate sliding in the movable groove are arranged, a first welding gun and a second welding gun are matched to achieve welding operation on a frame, a second electric telescopic machine drives a movable block to move, the frame is supported through a rotating rod and a supporting plate, and the welding efficiency is improved. And the frame is prevented from shaking in the welding process, the welding precision is improved, feeding and discharging of the frame are achieved through cooperation of the first driving motor and the first electric telescopic machine, welding operation is facilitated, and convenience and rapidness are achieved.

This utility model relates to the field of laser welding technology and proposes an underwater welding laser head, including a stainless steel tube cover; a connecting plate fixedly connected to the inner wall of the stainless steel tube cover, one end of which is fixedly connected to the end of the laser welding head; a spray disc fixedly connected to the lower end of the inner wall of the stainless steel tube cover, with spray holes at equal angles at the bottom of the spray disc; a connecting pipe extending to the outside of the stainless steel tube cover fixedly connected to one side of the top of the spray disc, with the bottom end of the connecting pipe communicating with the interior of the spray disc; and a protective cover movably connected to the bottom of the stainless steel tube cover, with fixing components at the top of the protective cover and the bottom of the stainless steel tube cover. Through the spray disc, connecting pipe, and spray holes, an umbrella-shaped protective gas curtain can be sprayed out, ensuring that a small area below the end of the laser welding head is free of water, facilitating welding operations. At the same time, high-pressure gas blows away welding fumes, ensuring smooth welding.

This invention discloses a universal welding system for elevator car frames, relating to the field of elevator car frame welding technology. It includes: a main body with a turntable connected inside and a welding arm positioned above the turntable; a tilting section including a first support with a rotating ring connected inside; a conveying section including a mounting plate on both sides of the inner ring of the rotating ring, with a clamping plate connected to the side of the mounting plate facing the center of the rotating ring, and a first drive wheel rotatably connected to the center of the clamping plate; and an adjusting section including a guide groove on the inner ring of the turntable, with a sliding frame connected within the guide groove, a limit clamp positioned above the sliding frame, a pneumatic clamp connected to the bottom of the limit clamp, and a second drive wheel mounted on the side of the limit clamp facing the pneumatic clamp. This invention can adjust the orientation of the steel beams before splicing and welding according to requirements, quickly assemble the steel beams into the required welding shape, and control the position of the welded frame, facilitating welding operations.

The utility model discloses a movable open -air surface railing welding operation platform belongs to railing welding technical field, including moving board, and the top of moving board is fixedly connected with first support and second support respectively, and the top of first support and second support is fixedly connected with the top plate in common, and the first sliding slot and second sliding slot are set up on first support and second support respectively, and the inside slide connection of first sliding slot has first slide, and one side fixed connection of first slide has the branch, and the one side of first support is provided with working frame, and the top fixed connection of working frame has the sliding plate, and the sliding plate slide connection is in the top of branch, through the cooperation of above -mentioned each device, makes this operation platform not to be restricted by the special terrain below open -air surface, and first electric push rod can drive working frame to move when working, and working frame can drive staff to move to open -air surface place to be convenient for staff to carry out the installation and welding work of railing, and effectively improve work efficiency.

The utility model discloses a welding tool for a whole machine handrail of a small excavator, relates to the technical field of welding tools, and aims to solve the problems that the whole machine handrail of the small excavator is inconvenient to fix when being welded due to the fact that no adaptive welding tool is provided for welding the whole machine handrail of the small excavator in the prior art. According to the scheme, the welding device comprises a bottom plate, a supporting rod is fixed to one corner of the top of the bottom plate, a supporting plate is fixed to the top end of the supporting rod, a fixing rod is fixed to the top of the supporting plate, and a positioning ring is fixed to the top of the fixing rod. According to the utility model, the whole-machine handrail of the small excavator is attached to one side of the positioning block, then the position of the whole-machine handrail part of the small excavator is calibrated through the positioning ring and the positioning hole in the positioning block, and then the handle screw rod in the fastening mechanism is rotated to enable the pressing block to move downwards, so that the whole-machine handrail part of the small excavator is fastened. The two ends of the whole machine handrail of the small excavator are fastened to the bottoms of the pressing blocks respectively.

The utility model relates to positioning frock technical field, and disclose a kind of positioning frock for SMT tray patch component welding, including workbench, the workbench includes table body, the top of table body is evenly welded with locating block, the below of table body is evenly welded with support rod, the surface of table body is evenly provided with recess. The utility model places PCB board body in the inside of limiting groove, makes locating pin and locating hole to its simple positioning, then starts vacuum pump, is adsorbed to PCB board body by negative pressure, makes PCB board body and the bottom of limiting groove be in conformity with, compared with traditional positioning frock for SMT tray patch component welding, this SMT tray patch component welding positioning frock is positioned by vacuum adsorption, to effectively eliminate the warping caused by locating pin error, reduce the influence brought by error, make PCB board body and the surface of SMT tray body be flush, facilitate subsequent welding operation.

The application discloses a camshaft position sensor welding positioning clamp and relates to the technical field of sensor welding equipment. The camshaft position sensor welding positioning clamp comprises a positioning base, a positioning table movably arranged on the top surface of the positioning base, a positioning groove arranged on the top surface of the positioning table, a pressure rod assembly arranged on the positioning base, a correction cylinder assembly movably arranged on the pressure rod assembly, a chip pin correction assembly arranged outside the positioning groove, a plurality of turnover motors arranged on the positioning base and provided with pressure rods on the output shafts of the turnover motors, a plurality of correction cylinders slidably arranged outside the pressure rods and provided with correction corner clamps on the outer circumferential walls of the correction cylinders, a plurality of rotating motors arranged on the positioning base and provided with circular correction discs coaxially arranged on the output shafts of the rotating motors, arc-shaped missing grooves arranged on the circular correction discs, and correction pins arranged in the arc-shaped missing grooves. The camshaft position sensor welding positioning clamp has the advantages that the welding quality is improved through pre-welding positioning.

This invention provides an aerial assembly device for large-span steel beams. The device includes a support mechanism and two positioning mechanisms. The support mechanism is positioned between the factory columns where the steel beams are to be installed. The positioning mechanisms are symmetrically positioned at the top of the support mechanism along the axis of the steel beams and include paired positioning components. These positioning components can move perpendicular to the axis of the steel beams to position and adjust their axial position. This invention provides a support platform and working platform for the assembly and connection of the steel beams by setting up the support mechanism, avoiding the need for large-scale temporary work platforms and significantly saving construction time and costs. The positioning mechanisms enable convenient, efficient, and precise positioning of the steel beams. The self-unloading lifting device allows for the dismantling of the support mechanism, avoiding prolonged occupation of hoisting equipment, resulting in high construction efficiency and safety.

The utility model provides a welding device for a power plant pipeline. The welding device comprises a welding table and two groups of pipeline main bodies, two groups of mounting sliding grooves are oppositely formed in the welding table, a movable frame is movably arranged in the mounting sliding grooves, and adjusting clamping assemblies are further arranged at the two ends of the movable frame and connected with the bottom of the welding table; a pipe frame is further arranged on the welding table, two sets of pipeline clamping assemblies are arranged on the pipe frame, and the two adjacent sides of the two sets of pipeline bodies make contact with each other through the adjusting clamping assembly and the two sets of pipeline clamping assemblies correspondingly. The adjusting clamping assembly and the pipeline clamping assembly are provided with the first pipe clamping piece and the second pipe clamping piece respectively, the first pipe clamping piece and the second pipe clamping piece are both of a detachable structure, and in the face of welding tasks of pipelines with different pipe diameters, an operator can replace the pipe clamping pieces with the corresponding diameters, and the pipelines can be rapidly and stably clamped. The fixing process is simplified, time consumption of equipment adjustment is avoided, welding work can be rapidly carried out, and then the universality of the device in a multi-pipe-diameter welding scene is improved.

The utility model provides a galvanized pipe clamping device, and particularly relates to the technical field of galvanized pipe processing equipment, the galvanized pipe clamping device comprises an L-shaped frame body and a first motor arranged on one side of the frame body, the top of the frame body is connected with two lead screw transmission assemblies through two auxiliary sliding pieces, the two lead screw transmission assemblies are connected through a coupler, and the two lead screw transmission assemblies are connected through a second motor. The output end of the first motor is connected with a lead screw transmission assembly, the lead screw transmission assembly comprises a vertical plate and a bearing plate arranged on one side of the vertical plate, a lead screw shaft is arranged on the lower end face of the vertical plate, a shaft sleeve is arranged on the lower end face of the bearing plate, and a lead screw is arranged in the lead screw shaft and the shaft body. The two lead screw transmission assemblies are arranged, so that two galvanized pipes can be borne and transported, the butt joint work of the two galvanized pipes is guaranteed, a second motor is matched with a shaft body and a sleeve, the clamped galvanized pipes can be rotated, and workers can conveniently conduct welding work on the galvanized pipes.

The utility model discloses an ultrasonic welding machine with an anti-pinch structure, which relates to the technical field of ultrasonic welding and comprises a base, a support is fixedly mounted on the base, an electric push rod is mounted on the support, an ultrasonic transducer is fixedly mounted at the output tail end of the electric push rod, an amplitude-change pole is connected onto the ultrasonic transducer, and the amplitude-change pole is connected with the anti-pinch structure. A mold assembly is installed between the amplitude-change pole and the base and comprises an upper mold fixedly installed on the amplitude-change pole and a lower mold fixedly installed on the base, a grating switch is installed between the upper mold and the lower mold and connected to a power line of the electric push rod, and a limiting mechanism is installed in the lower mold. A positioning groove is formed in the middle of the lower die, and an inlet-outlet is formed in the edge of the positioning groove. According to the ultrasonic welding machine with the anti-pinch structure, the mold assembly can prevent hand pinching accidents from occurring, the limiting mechanism can prevent a workpiece from moving in the welding process, and the welding precision is guaranteed.

The intelligent welding and grinding all-in-one machine for precision machining comprises a machining box body, an adjusting motor is installed in the machining box body, the top of the adjusting motor is rotationally connected with a switching table, and the top side of the switching table is provided with a third driving motor and a second driving motor. The top of the third driving motor and the top of the second driving motor are connected with a first machining table and a second machining table correspondingly, the top of the second machining table is provided with a workpiece chuck and a protective cover, and the protective cover is provided with a collecting assembly. The collecting assembly comprises a collecting pipe embedded in the protective cover, a one-way valve is arranged on one side of the collecting pipe, a plurality of air inlets are formed in the collecting pipe, multiple sets of through holes are annularly formed in the inner wall of the protective cover, the protective cover is located on the outer side of the workpiece chuck, and a welding mechanism and a grinding mechanism are arranged at the top of the first machining table and the top of the second machining table correspondingly. The device can improve the continuity of workpiece welding and grinding machining, so that the production efficiency of workpieces is improved.

The application discloses a clamping device for welding special-shaped pipe fittings and belongs to the technical field of welding devices, which comprises a clamping cylinder, an insertion cylinder, a movable bearing table, a centering and clamping assembly and a supporting base. An inner support clamping mechanism is arranged in the clamping cylinder. An extrusion top block is arranged above the clamping cylinder. The inner support clamping mechanism is triggered to expand by the extrusion top block penetrating through the vertical pipe and abutting against the inner wall of the horizontal pipe to calibrate and clamp the splicing part of the tee pipe to be assembled. The top of the insertion cylinder is connected with the bottom of the clamping cylinder. A locking mechanism is arranged in the insertion cylinder. The locking mechanism cooperates with the inner support clamping mechanism to lock and release the clamping state of the inner support clamping mechanism. The supporting base is connected with the bottom of the insertion cylinder through a straight rod. The movable bearing table is movably sleeved on the straight rod and elastically abuts against the bottom of the insertion cylinder. The centering and clamping assembly is arranged on the movable bearing table and is used for centering and calibrating the vertical pipe.

The utility model relates to the technical field of welding roller carriers, in particular to an angle-adjustable welding roller carrier. According to the technical scheme, the device comprises a U-shaped moving seat and a rotating plate, one side of the lower surface of the rotating plate is rotationally connected with a multi-stage hydraulic cylinder, the output end of the multi-stage hydraulic cylinder is rotationally connected with the bottom of the inner wall of the U-shaped moving seat, and the side, away from the multi-stage hydraulic cylinder, of the outer surface of the rotating plate is rotationally connected with the inner wall of the U-shaped moving seat; u-shaped moving frames are symmetrically arranged at the positions, close to the front surface and the rear surface, of the upper surface of the rotating plate, a supporting rotating roller is rotationally installed in each U-shaped moving frame, sliding rings are slidably connected to the positions, close to the two ends, of the outer surface of each supporting rotating roller in a sleeving mode, and a limiting baffle ring is fixedly connected to the inner side of each sliding ring. The angle of a weldment can be adjusted, so that welding work is facilitated, meanwhile, the limiting effect on the weldment after angle adjustment is achieved, and the inclined weldment is prevented from sliding off from the roller carrier.

This utility model relates to the field of transformer manufacturing technology and discloses a multi-angle welding positioning device for the side wall of a transformer tank. The device includes a vertical plate, with U-shaped plates at both the upper and lower ends of the right side of the vertical plate. Each of the two U-shaped plates has an installation shaft extending to its opposite side on its opposite inner wall. This multi-angle welding positioning device for the side wall of a transformer tank involves placing the tank bottom plate inside a first rectangular groove and inserting one end of the tank side wall plate into a second rectangular groove. Then, two second electric telescopic rods are activated to clamp and fix the tank side wall plate. Next, two first electric telescopic rods are activated to move the tank side wall plate downwards until the bottom of the tank side wall plate is tightly fitted with the top right side of the tank bottom plate. At this point, the tank bottom plate and the tank side wall plate are vertically positioned, thus completing the positioning of the two steel plates without the need for manual positioning, thereby improving the positioning effect.

The application provides a vehicle frame welding assembly workbench, which comprises a third clamping group, a first clamping group, a second clamping group, a distance adjusting part and a main frame. One end of the main frame is provided with a sliding rail. The first clamping group is arranged at the end of the main frame away from the sliding rail and comprises a plurality of clamps. The second clamping group is arranged at the middle section of the main frame and comprises a plurality of clamps. The distance adjusting part comprises a sliding installation platform and a distance adjusting cylinder. The sliding installation platform is slidingly arranged on the sliding rail of the main frame. The distance adjusting cylinder is fixed to the main frame, and the piston rod of the distance adjusting cylinder is connected with the sliding installation platform. The third clamping group is arranged on the sliding installation platform and comprises a plurality of clamps. The vehicle frame welding assembly workbench provided by the application has the advantage that it can be suitable for welding and fixing vehicle frames of different lengths.

The application discloses a movable reinforcing cage welding platform and relates to the field of reinforcing cage welding equipment.The movable reinforcing cage welding platform comprises a base and further comprises a fixing cylinder, support frames arranged on the two sides of the base, the fixing cylinders arranged on the support frames for supporting reinforcing bars, a plurality of sliding grooves formed in the outer part of the fixing cylinders, support blocks slidingly arranged in the sliding grooves, connecting plates arranged between the two support blocks, square grooves formed in the side of the support blocks close to each other, support plates arranged in the square grooves for placing reinforcing bars, and a cam arranged on a rotating shaft.A plurality of reinforcing bars are sequentially inserted into the support plates and form a reinforcing cage, the support blocks can slide along the sliding grooves, the size of the reinforcing cage can be adjusted, the driving rods can adjust the use position of a welding head in a mode that the driving rods are matched with transmission belts through adjusting wheels, the positioning of the reinforcing bars can be ensured to be accurate, and the processing efficiency of the reinforcing cage is improved.

The application discloses a transformer oil tank welding overturning device and particularly relates to the technical field of transformer oil tanks, which comprises a rectangular frame, the inner surfaces of the front and back sides of the rectangular frame are provided with mutually-penetrating rectangular grooves, the upper parts of the inner surfaces of the front and back sides of the rectangular frame are jointly connected with sliding plates, the middle part of the left side of the inner surface of the rectangular groove is fixedly connected with an electric telescopic rod, the output end piston rod of the electric telescopic rod is fixedly connected with a connecting plate, the upper end of the connecting plate is fixedly connected with electromagnet two, the horizontal part of the sliding plate is fixedly connected with electromagnet one at the upper end, the right side of the sliding plate is provided with a supporting assembly, the right part of the upper end of the rectangular frame is fixedly connected with an L-shaped plate, the right side of the back part of the L-shaped plate is provided with a rotating assembly, and the right side of the front part of the L-shaped plate is provided with a slag cleaning assembly. The supporting assembly of the transformer oil tank welding overturning device can support the cylindrical part when a circular transformer oil tank is welded, thereby reducing the burden of workers.

This utility model relates to the field of bridge structural component welding technology, and discloses a bridge structural component welding device with an anti-vibration structure, including a base, a first bridge structural component, and a second bridge structural component. The top of the base is movably connected to the first bridge structural component, and the top of the first bridge structural component is movably connected to the second bridge structural component. Two sets of angle measuring blocks can rotate around a second threaded rod and are fixed by a third nut, thereby realizing the adjustment of multiple angles such as 45 degrees, 90 degrees, and 135 degrees. This multi-angle welding capability greatly expands the application range of the device, enabling it to meet the diverse welding angle requirements of different bridge structural designs.

The invention discloses a measuring device for a floating tray of a storage tank, a sealing element manufacturing system and a related method. The measuring device comprises a main arm and a balancing weight installed on the main arm, at least one first pulley is installed at the lower end of the balancing weight, and the first pulley is used for abutting against the top end of the floating disc. A motor is arranged in the balancing weight and connected with the first pulley to drive the first pulley to move at the top end of the floating disc. A second pulley and a third pulley are respectively arranged on two sides of the lower end of the main arm; the second pulley is used for abutting against the inner wall of the storage tank, the third pulley is used for abutting against the side wall of the floating disc, and at least one scanner is further arranged on the side, provided with the third pulley, of the main arm. The scanner is located on the lower portion of the balancing weight and used for obtaining point cloud data of the floating disc. According to the invention, omnibearing, high-precision, rapid and high-automation measurement of the floating disc of the storage tank can be realized, the efficiency and accuracy of radian measurement of the floating disc of the floating roof storage tank are improved, and powerful technical support is provided for maintenance of the storage tank and improvement of sealing performance.

The invention belongs to the technical field of laser welding, and particularly relates to new energy automobile battery production automatic welding equipment which comprises a frame, a conveying belt is arranged in the frame, a plurality of storage boxes are arranged at the top of the conveying belt, the internal structures of the storage boxes are the same, and fixing assemblies are fixedly installed in the storage boxes. The retention assembly is used for aligning and fixing the plurality of batteries; when the laser welding device carries out laser welding on the nickel sheet and the battery lug, the correction assembly can drive the rolling shaft to carry out attachment correction on the nickel sheet and the battery lug, so that when the laser welding device carries out welding on the nickel sheet and the battery lug, alignment attachment can be carried out on the nickel sheet and the battery lug, and the phenomenon that the nickel sheet and the battery lug are damaged when the laser welding device carries out welding operation is avoided. When the nickel sheet and the battery are welded, the nickel sheet and the battery are tilted or dislocated and deviated, so that the welding quality of the laser welding device on the nickel sheet and the battery is influenced, the laser welding device can better weld the nickel sheet and the battery, and the welding operation between the nickel sheet and the battery is facilitated.

The utility model relates to the technical field of welding fixtures, in particular to an automobile body welding fixture locking mechanism which comprises a bottom plate and a frame plate, the upper side of the frame plate is fixedly connected with two side plates which are symmetrically distributed, a double-end lead screw is rotationally installed between the two side plates, the outer surface of the double-end lead screw is in threaded connection with two transverse plates which are symmetrically distributed, and the transverse plates are in threaded connection with the bottom plate. By means of opposite movement or relative movement of the two transverse plates, the four clamping round seats can synchronously adjust the clamping positions so as to adapt to automobile bodies of different width sizes, then the four electric push rods synchronously drive the four clamping round seats to be adjusted in a telescopic mode, and the clamping positions of the four clamping round seats can be adjusted in a telescopic mode. The locking mechanism of the welding fixture is used for adaptively clamping automobile bodies with different lengths and sizes and ensuring the stability of the automobile bodies, so that the automobile bodies with different sizes can be flexibly and conveniently locked without worrying that the welding position is shielded, and the applicability of the locking mechanism of the welding fixture is improved.

The utility model discloses a lamp wick integrated LED lamp bead, and relates to the technical field of LED lamp beads. The lamp wick integrated LED lamp bead comprises an integrated LED structure and an installation structure, the installation structure comprises an installation box, a containing groove and a bottom groove are formed in the installation box, two threading holes and two storage edge grooves are formed in the inner wall of the containing groove, the storage edge grooves are communicated with the bottom groove, and a fixing assembly is arranged in the bottom groove. According to the lamp wick integrated LED lamp bead, the mounting structure and the fixing assembly are arranged, the integrated LED structure can be contained in the mounting structure through the mounting structure, so that the integrated LED structure is protected in all directions, and the integrated LED structure in the mounting structure can be quickly disassembled and assembled in cooperation with the fixing assembly; the convenient and fast one-time replacement and installation process is achieved, in the production link, welding and assembling work are facilitated through the design, and the production efficiency is remarkably improved. In addition, the production cost can be effectively reduced.

The utility model discloses a direction handle pipe welding clamp, including frame body, with bottom plate, top plate and the symmetrical setting between bottom plate, top plate's side plate, upper pressure pincers are connected in top plate upper end, and act on the outer wall of main pipe piece medium section, and side pressure pincers are connected to the outside of side plate in a certain angle symmetry, and side pressure pincers are used for clamping the end of main pipe piece, and main support is symmetrically arranged in the both sides of upper pressure pincers and is connected with top plate upper end, and the notching that is suitable for main pipe piece is set up on main support, the utility model discloses upper pressure pincers, side pressure pincers and main support can be effectively clamped fixed to the special appearance structure of main pipe piece, and it is favorable for the welding operation of subsequent robot, because the limiting gap and the positioning pin that place the welding piece are arranged in main support, when welding, operating personnel can place the welding piece in the predetermined position of main pipe piece side portion conveniently and quickly.

A welding positioning and clamping device for the rear triangle fork and lugs of a bicycle frame includes a base plate, a fork tube front end support mechanism, a fork tube limiting mechanism, a lugs positioning mechanism, and a workpiece clamping mechanism. The base plate is mounted on a rotary table at the welding station. The fork tube front end support mechanism includes a support plate and a support plate mounting seat, with the support plate mounted on one end of the base plate via the mounting seat. The fork tube limiting mechanism has several sets of limiting components, each set consisting of two limiting blocks (left and right). The lugs positioning mechanism includes a positioning seat and a positioning block, with the positioning block mounted on the other end of the base plate via the positioning seat. The shape and size of the positioning block match the notch on the lug. The workpiece clamping mechanism includes a fork tube clamping component and a lugs clamping component, located respectively in the middle of the base plate and at a position corresponding to the lugs positioning mechanism. This invention achieves the goals of improving work efficiency and product quality while reducing production costs.

The utility model relates to new energy battery technical field discloses a battery pack and its battery, its battery includes: the electric core body, has first end and second end along the first direction, the tab portion, it extends from the both ends of the electric core body along the first direction, the tab portion at the first end is called first tab portion, the size of first tab portion in the first direction is a mm, the tab portion at the second end is called second tab portion, the size of second tab portion in the first direction is b mm, satisfy: a > b. The utility model discloses such structure, can reduce the occupation to space, improve the space utilization of battery shell inside, and further improve the energy density of battery.

The utility model provides an inner diameter tensioning device for a cylindrical workpiece, which comprises a lifting frame, a first mounting seat is mounted at the moving end of the lifting frame, a second mounting seat is rotatably mounted on the first mounting seat, a driving mechanism for driving the second mounting seat to rotate is mounted at the top of the first mounting seat, and a clamping mechanism for clamping the second mounting seat is mounted at the moving end of the lifting frame. A tensioning assembly is installed in the center of the end, away from the first installation base, of the second installation base and comprises an adjusting mechanism, and a plurality of evenly-distributed supporting mechanisms are installed on the adjusting mechanism. Through the arrangement of the first mounting seat, the second mounting seat and the driving mechanism, the driving mechanism is started to drive the second mounting seat to rotate during use, so that the tensioning assembly supported in the cylindrical workpiece and the cylindrical workpiece rotate simultaneously, and the welding work of the cylindrical workpiece is facilitated.

The application relates to a laser welding device and belongs to the technical field of fin laser processing, which comprises a welding machine table, a cross beam and a welding head. The cross beam is slidably arranged on the welding machine table, and the welding head is slidably arranged on the cross beam and slides along the length direction of the cross beam and in a direction perpendicular to the welding machine table. A first mounting ring is arranged on the welding head, a plurality of shielding plates are arranged on the first mounting ring, and the shielding plates are arranged in a circumferential direction of the outer ring of the first mounting ring and surround the welding head. The shielding plates are slidably arranged on the first mounting ring, the bottom of the shielding plate is supported on the fin when the welding head welds the fin, the shielding plate is slidably arranged on the first mounting ring, the bottom of the shielding plate is supported on the fin when the welding head welds the fin, a preheating piece is arranged on the shielding plate, the preheating piece is used for absorbing heat generated in a welding process and storing the heat, and the heat is transmitted to the next fin to be processed. The application has the effect of improving the welding safety of the fin.

The utility model discloses welding equipment for sheet metal part machining. The welding equipment comprises a workbench, a linear module fixed to one side of the workbench, a welding gun arranged on a sliding part of the linear module, two baffles fixed to the top of the workbench and perpendicular to each other, a welding opening formed in the extending intersection position of the two baffles and two supporting plates. The two supporting plates are fixed to the tops of the two baffles correspondingly, a top plate is fixed between the two supporting plates, and a pressing mechanism is fixed to the bottom of the top plate. By arranging the pressing mechanism, the bottom of the box is pressed by the pressing block, meanwhile, the side walls of the box are pressed by the clamping plates, the two adjacent side walls of the box are kept perpendicular to each other, follow-up welding work is facilitated, and the defective rate of box welding can be reduced.