48 results about "Weld quality assurance" patented technology

The utility model discloses a main-grid-free back contact battery string and a photovoltaic assembly, the main-grid-free back contact battery string comprises a plurality of back contact battery pieces arranged along a first direction, and the back surface of each back contact battery piece is provided with first fine grids and second fine grids which are alternately arranged along the first direction; the first welding strips and the second welding strips are alternately arranged in the second direction; wherein for the same back contact battery piece, the first welding strip is electrically connected with the first fine grid, and is insulated from the second fine grid; the second welding strip is insulated from the first fine grid and is electrically connected with the second fine grid; welding layers are arranged at the contact positions of the first fine grid and the first welding strip and the contact positions of the second fine grid and the second welding strip; the welding layer comprises a welding metal layer and a bonding glue layer, and the bonding glue layer covers the welding metal layer. According to the utility model, the welding quality of the welding strip can be improved, and the connection stability and reliability of the welding strip and the fine grid are ensured.

The invention relates to the technical field of welding tongs, in particular to servo robot welding tongs for medium and large sheet metal parts, which comprise a servo welding tongs seat, a driving motor, a hydraulic rod, an electrode welding rod and a polishing assembly, a rotating claw is rotatably mounted on the servo welding tongs seat, the end part of the hydraulic rod is rotatably connected with the rotating claw, the driving motor is fixedly mounted at the end part of the rotating claw, and the electrode welding rod is rotatably connected with the driving motor. An electrode welding rod is rotationally installed on the driving motor, an electrode tip is installed at the end of the electrode welding rod, the grinding assembly is arranged on the servo electrode holder base, and the transmission assembly drives the grinding assembly to work. According to the servo electrode holder, the grinding assembly is installed on the servo electrode holder base, the grinding assembly grinds the electrode tip which does not work, the defects of welding explosion, small welding nugget and the like caused by the fact that the electrode tip cannot be ground in time in the using process are overcome, the welding quality of a welding part is improved, and the welding efficiency and the welding quality stability of the electrode holder are guaranteed.

The invention discloses door ring welding equipment with a welding movable opening and a welding manufacturing process, and relates to the technical field of welding equipment.The door ring welding equipment comprises an operation table, a semicircular block is arranged at the upper end of the operation table, and an arc-shaped groove is formed between the semicircular block and the operation table; according to the door ring welding equipment with the welding movable opening and the welding manufacturing process, rotating rods are arranged at the ends of overturning plates, the outer surfaces of the rotating rods are slidably connected with the inner wall of a protection plate, the cross section of the protection plate is in an arc shape, when the overturning plates move to the highest end, the overturning plates rotate around the rotating rods and push the overturning plates to overturn, and when the overturning plates reach the highest end, the rotating rods rotate around the rotating rods and push the overturning plates to overturn. And the door ring is pushed by cooperating with a worker or an electric telescopic rod, so that the door ring moves to the other end through an arc-shaped groove, overturning of the door ring is completed, the welding quality of a movable opening welding part is ensured, and the functionality of the movable opening welding part is ensured.

The utility model discloses a soldering flux coating mechanism, a battery piece feeding device and series welding equipment, the soldering flux coating mechanism is used for coating soldering flux to a welding point on the surface of a battery piece before a welding strip is laid on the battery piece, and the welding point is used for being welded to the welding strip; the scaling powder coating mechanism comprises a lifting module and a coating pen assembly. The coating pen assembly is configured to be driven by the lifting module to descend so as to coat soldering flux on a welding point on a battery piece below the coating pen assembly, and is driven by the lifting module to ascend and reset after coating is finished; according to the application, the soldering flux can be coated on the welding points on the battery piece through the lifting of the coating pen assembly before the welding strip is laid on the battery piece, so that the volatilization loss caused by the heating of the soldering flux on the welding strip before the battery piece which is laid and stacked with the welding strip subsequently enters a welding area can be made up; therefore, the influence on the welding quality of the welding strip and the battery piece due to the heat loss of the soldering flux can be avoided, and the welding reliability of the welding strip and the battery piece is ensured.

The utility model discloses a welding device, and relates to the technical field of ventilation slot plate welding, the welding device is provided with a feeding station and a welding station which are staggered on the horizontal plane, the welding device comprises a positioning structure and a welding structure, the positioning structure comprises two positioning parts which are arranged at intervals in the vertical direction, and the two positioning parts are arranged on the horizontal plane. At least one of the two positioning parts has a moving stroke in the vertical direction, all the positioning parts are rotationally arranged along the axis extending in the vertical direction and can pass through a feeding station and a welding station in the rotating process, and the two positioning parts are used for bearing a groove plate and a plurality of groove pieces which are located on the feeding station and make contact with each other. And the welding structure is located at the welding station and used for sequentially welding the slotted vanes moving to the welding station to the slotted plate. Through the arrangement, the welding efficiency is guaranteed, meanwhile, the relative positions of the slotted vane and the slotted plate are directly determined through the two positioning parts, the welding quality can be further improved, and the consistency of the sizes of welding spots is guaranteed.

The invention relates to the field of welding equipment, in particular to multi-station simultaneous welding equipment which comprises a welding base, a plurality of wire conduits are fixedly mounted on the welding base, a connecting wire penetrating through the wire conduits is arranged in the welding base, a clamping plate is mounted on one side of the welding base, and a welding box and a placement frame are arranged on one side of the welding base. In the process that the clamping plates are separated from each other, the pushing assembly drives the welding box and the placing frame to move to continuously get close to a wire conduit on one side, meanwhile, in the moving process, the welding box and the placing frame are driven to be separated from each other, and after the welding box and the placing frame move to the position close to the wire conduit, the welding box and the placing frame are folded; and the connecting line in the middle is clamped through the arc-shaped groove and the placing groove, so that the connecting line is prevented from deflecting before or during welding, the welding quality of a product is ensured, and the overall service life of the product after production is ensured.

The present invention discloses a door ring welding device with a welding live opening and a welding manufacturing process, which relates to the technical field of welding equipment and includes an operating table. A semi-circular block is arranged at the upper end of the operating table, and an arc-shaped groove is formed between the semi-circular block and the operating table. For this door ring welding device with a welding live opening and the welding manufacturing process, rotating rods are arranged at the ends of the turning plates, and the outer surfaces of the rotating rods are slidably connected to the inner walls of the protective plates. The cross-section of the protective plates is arc-shaped. Thus, when the turning plates move to the highest end, they rotate around the rotating rods and push the turning plates to flip. When reaching the highest end, it cooperates with the staff or the electric telescopic rod to push the door ring, so that it moves to the other end through the arc-shaped groove, completing the flipping of the door ring, ensuring the welding quality of the welded part of the live opening, and guaranteeing its functionality.

The application provides a post-poured strip water stop fish scale mesh welding support system and a construction method, which comprises a main frame base, a first rectangular frame and a second rectangular frame arranged at intervals and fixed on the top of the main frame base; a top height adjusting mechanism for supporting the fish scale mesh is installed on the top of the first rectangular frame; a clamping mechanism for clamping and fixing the water stop steel plate is arranged at the interval between the first rectangular frame and the second rectangular frame; a bottom height adjusting mechanism is installed at the bottom end of the main frame base; and a lateral adjusting mechanism is installed on the side surface of the main frame base. The system can effectively accelerate the post-poured strip water stop fish scale mesh welding construction speed, improve the welding quality, ensure the construction effect to be neat and vertical, and improve the construction efficiency.

The utility model relates to the field of parts of connecting devices, in particular to a conducting bar, a plug and a quick-charging connector. The conducting bar, the plug and the quick-charging connector are used for solving the problem that the welding quality of the conducting bar and a copper ring is difficult to guarantee because the thickness of the conducting bar is large when the conducting bar and the copper ring are welded in the prior art. The conducting bar comprises a bar body, the end part of the bar body is provided with a connecting hole for a bolt to pass through, and the connecting hole of one surface of the bar body facing a socket terminal is provided with a sinking groove which can be used for placing a copper ring part and is lower than the axial length of the copper ring part. After the copper ring part is placed in the sinking groove, subsequent ultrasonic welding is carried out, at the moment, the distance from the other side of the conducting bar to the welding face of the conducting bar and the copper ring part is reduced, the distance from a welding head on one side of the conducting bar to the welding face is also reduced, the welding thickness is reduced, and the welding quality of the copper ring part and the conducting bar can be improved; and the welding reliability of the two is ensured.

The utility model relates to the technical field of machine manufacturing, in particular to a universal tool for welding a fork connecting rod of a forklift. The utility model provides a universal tool for welding a fork connecting rod of a forklift. The tool comprises a bottom plate, and the top of the bottom plate is slidably connected with a shaft sleeve positioning support, a first square tube limiting module, a second square tube limiting module and a tail end positioning support from left to right. Positioning grooves are formed in the two sides of the top of the bottom plate and matched with the limiting blocks and the sliding blocks at the bottom of the tail end positioning support to achieve sliding connection. A U-shaped groove is formed in the bottom plate, and fixing holes are formed in all the components and located over the U-shaped groove. The right side of the tail end positioning support is provided with a limiting groove and a nut limiting step pin, and the upper end of the tail end positioning support is provided with a threaded hole connected with a clamping bolt. The universal tool has the advantages that the space is saved, the cost is reduced, the welding quality is improved, the size and shape consistency of the connecting rod is ensured, and the production efficiency is improved.

The invention discloses a method for controlling welding deformation of a vacuum box, which comprises the following steps of: performing stress relief treatment on a plate, putting the plate on a tool clamp for pre-tightening and fixing, and then welding by adopting a welding sequence of combining symmetrical welding and segmented skip welding, a non-contact laser measuring instrument is adopted for monitoring welding deformation of the vacuum box body in real time, welding process parameters or a tool clamp are adjusted in time, after welding is completed, overall stress relief annealing treatment is conducted on the vacuum box body, then size detection is conducted, and existing tiny deformation is corrected through a mechanical shaping or hydraulic shaping method. According to the welding deformation control method for the vacuum box body, influence factors of welding deformation are reduced from the source, the welding quality is improved, the size precision of the vacuum box body in the welding process is ensured, the size precision and the use performance of the vacuum box body are remarkably improved, the manufacturing requirement of the high-precision vacuum box body is met, and the production cost is reduced. Good economic benefits and application prospects are realized.

The invention provides battery welding equipment, and relates to the technical field of battery manufacturing. The battery welding equipment comprises a conveying device, a fixing device and a welding device. The conveying device is used for conveying the jig to the fixing device. The fixing device comprises a plurality of installation stations arranged at intervals and a plurality of press-fitting structures arranged at intervals, the number of the press-fitting structures is equal to that of the installation stations, the press-fitting structures and the installation stations are in one-to-one correspondence, the press-fitting structures are used for pressing the batteries to the jig, and the fixing device can drive the jig to move to the welding position. The welding device is fixedly mounted on the side, away from the mounting station, of the press-fitting structure. The fixing device further comprises a plurality of dust collecting structures arranged at intervals, the number of the dust collecting structures is equal to that of the mounting stations, the dust collecting structures and the mounting stations are in one-to-one correspondence, and the dust collecting structures are used for collecting welding smoke generated in the battery welding process. According to the battery welding equipment provided by the embodiment of the invention, the collection efficiency of welding smoke dust can be improved, the welding quality of the battery is improved, and the welding yield of the battery is ensured.

The present invention is applicable to the technical field of aluminum part processing, and provides a cold welding processing device for aluminum part production, including a base, the base includes a base arranged in the horizontal direction and a bracket arranged in the vertical direction; a transmission unit, the transmission unit is arranged on the top of the base in the same direction, the transmission unit includes a slide rail arranged in the same direction as the base and a slide table slidably connected to the welding assembly, and a plurality of groups of mounting frames are installed on the top of the slide table, and aluminum parts are placed on each group of mounting frames; wherein, the aluminum part is composed of three groups of aluminum thin plates, the three groups of aluminum thin plates are arranged perpendicular to each other in pairs, two of the three groups of aluminum thin plates form a weld seam in pairs, and the three groups of aluminum thin plates together form a weld angle; the device solves the problem that the existing automatic welding technology cannot process the aluminum thin plates forming the weld angle to be welded, and achieves the purpose of being able to weld the aluminum parts by precisely controlling the welding method, while ensuring the welding quality and ensuring the beautiful and firm welding of the weld angle part.

The invention relates to the technical field of welding detection, and provides a photovoltaic module junction box welding quality detection device and method. Comprising a detection bench which is provided with a detection station; the conveying device is arranged on one side of the detection table and is used for conveying the photovoltaic module to a detection station; the positioning device is arranged on the detection table and is used for positioning the photovoltaic module at a preset detection position; the testing device comprises a driving piece and a probe mechanism, and the driving piece drives the probe mechanism to move so as to make contact with electric contacts at the two ends of the diode in the junction box; the pulse power supply is used for applying pulse current equal to the short-circuit current of the photovoltaic module STC to the diode; and the judging mechanism is used for obtaining the forward voltage V < measurement > and the temperature T < measurement > of the diode, obtaining the voltage drop V < setting > corresponding to the temperature T < measurement > through the fitting curve, and judging that the welding quality is qualified when the forward voltage V < measurement > is smaller than or equal to 1.1 V < setting >. And the welding quality is judged through the pulse voltage drop test, so that the detection speed is ensured, and the accuracy is improved.

The invention discloses a large-tonnage vehicle frame machining process and device, and relates to the technical field of vehicle frame machining, the large-tonnage vehicle frame machining device comprises a bearing frame and a vehicle frame part, the top of the bearing frame is rotationally connected with a supporting frame, the top of the supporting frame is provided with a placing frame, and the vehicle frame part is installed on the vehicle frame part; control assemblies used for adjusting the welding angle of the frame part are arranged on the two sides of the supporting frame. According to the large-tonnage frame machining process and the large-tonnage frame machining device, the welding angle of the frame part is accurately controlled, and the angle is kept stable in the welding process, so that the deformation of the frame part caused by non-uniform distribution of thermal stress in the welding process can be effectively reduced; the uniform welding angle and the stable welding position are beneficial to more uniform distribution of heat on the frame part, and the risks of local overheating and deformation are reduced, so that the welding quality is improved, and the size precision and the shape precision of the frame part are ensured.

The utility model discloses a metal and carbon fiber thermoplastic composite material connecting structure, a fixed loading table and welding equipment. The connection structure of the metal and the carbon fiber thermoplastic composite material comprises a metal connection strengthening structure, a metal plate, a carbon fiber thermoplastic composite material plate, a Z-shaped structure, a positioning step, a first welding surface, a second welding surface, a metal plate welding surface, a first area and a second area, the second welding face is connected with the first face of the carbon fiber thermoplastic composite material plate in a welded mode, and the second area is connected with the second face of the carbon fiber thermoplastic composite material plate in a welded mode. The fixed loading platform comprises an upper fixed loading platform and a lower fixed loading platform; the welding equipment comprises a fixed loading table, laser welding equipment and a load applying mechanism. According to the utility model, the connection strength, stability and reliability of the metal and the carbon fiber thermoplastic composite material are improved, the welding accuracy and the welding quality are improved, and the performance consistency of the connector is ensured.

The invention provides a welding part, a battery, electric equipment and a welding method. At least one welding wire is formed on the welding piece, the welding wire comprises at least one linear welding wire and at least one curved welding wire, and the linear welding wire and the curved welding wire are sequentially connected so that the welding wire can gradually extend in one direction; the welding part is used for being welded with a to-be-connected part, the weld penetration depth of the welding part of the welding part and the to-be-connected part is H1, the thickness of the welding part is H2, and H1 / H2 is larger than or equal to 1.1 and smaller than or equal to 3. According to the welding part, the length of the welding wire can be effectively increased, the welding stability and the welding quality of the welding part and other parts can be improved, the problem that accumulated heat at an intersection point is too high due to the fact that a single welding wire has the intersection point can be solved, and the welding stability and the welding quality are guaranteed. The connecting stability of the welding piece and the to-be-connected piece is guaranteed, meanwhile, the to-be-connected piece can be prevented from being welded through due to the fact that the weld penetration depth is too large, and the welding quality is guaranteed.

The invention discloses an abrasion detection and repair construction method for a shield cutter head below a river channel, which comprises the following steps of: S1, selecting a stop point to stop a shield machine, and constructing a water stop ring in a hole; s2, opening a bin to check the abrasion conditions of a tunnel face and a cutter head of the shield tunneling machine; s3, the operation pilot tunnel is constructed according to construction requirements; s4, measuring the abrasion loss and the abrasion shape of the cutterhead in the operation pilot tunnel; and S5, the cutter head is repaired in the operation pilot tunnel. According to the method, the excavation efficiency of the construction groove hole is improved, the construction speed is high, the influence on the construction period is reduced, the construction cost is low, the construction difficulty is small, the construction safety is better guaranteed, the cutter head abrasion detection efficiency and the cutter head repair welding quality are improved, and the use reliability of the cutter head structure is guaranteed.

The utility model discloses a novel motor leading-out wire terminal automatic welding squaring machine, which relates to the technical field of automatic welding squaring machines, and comprises a bottom frame assembly, a table top moving assembly, a machine head assembly, an aluminum profile outer cover assembly and a positioning tool assembly, the table top moving assembly and the machine head assembly are arranged above the bottom frame assembly, and the positioning tool assembly is arranged above the table top moving assembly. The novel automatic welding squaring machine for the motor leading-out wire terminal is characterized in that the machine head assembly is fixed to the machine head assembly, the aluminum profile outer cover assembly is fixed to the machine head assembly, the positioning tool assembly is placed on the table top movement assembly after a product is installed, and preferably, the machine head assembly comprises a machine head installation bottom plate. By means of the squaring assembly in the machine head assembly, the left-right size of the welding position can be guaranteed, the welding position is more accurate, the welding quality is improved, the stability and reliability of connection between the motor leading-out wire terminal and other parts are guaranteed, and the problems of poor contact, resistance increase and the like caused by welding position deviation are solved.

The invention discloses a water turbine runner welding device which comprises a lifting set, a welding set and a welding set, the lifting set is provided with an outer clamping claw capable of being used for grabbing a runner body, and the lifting set can conduct swing lifting action; the rotating set and the lifting set are oppositely arranged, the rotating set is provided with an inner clamping jaw used for clamping and fixing the rotating wheel body, and the inner clamping jaw can rotate; the grabbing and positioning set is arranged above the lifting set and the rotating set, the grabbing and positioning set is provided with a grabbing block capable of horizontally sliding, a first electromagnetic attraction block used for attracting the runner blades is arranged in the grabbing block, and a welding set is integrated on the grabbing block; and the transferring set is arranged below the grabbing and positioning set, the transferring set is provided with a rotatable conveying belt, and the conveying belt is provided with a plurality of positioning blocks used for transferring the runner blades. The automatic welding device has the beneficial effects that the automation degree is high, welding operation is convenient and simple, the welding quality is improved, and the product quality is guaranteed.

The utility model discloses a new energy automobile filter copper bar welding positioning tool which comprises a positioning tool block, the positioning tool block comprises a front installation table and a rear installation table, the front installation table is provided with an installation top face, and the installation top face is fixedly connected with an installation boss; a first limiting block is fixedly connected to the front end of the left side of the mounting top surface; a first mounting part for mounting the second horizontal section is arranged between the first limiting block and the mounting boss; the front surface of the front mounting table is fixedly connected with a second limiting block through a bolt; a second mounting part for mounting a third horizontal section is arranged between the second limiting block and the mounting boss; a third limiting block is fixedly connected to the right side of the rear end of the upper surface of the mounting boss, a pin positioning block is fixedly connected into the rear mounting table through a bolt, and a positioning groove is formed in the upper surface of the pin positioning block. According to the utility model, the copper bar and the pin can be accurately positioned, and the accuracy of the welding position of the pin is ensured, so that the welding quality is improved, and the performance stability of the filter copper bar is ensured.

The invention provides a fusion depth detection method and system of a radiation shielding structure and a fusion device, and relates to the technical field of fusion device manufacturing, a supporting column sequentially penetrates through a plurality of partition plates, each partition plate is connected with the supporting column in a welded mode, and the fusion depth detection method comprises the steps that a detection probe is installed on the supporting column; the detection probe is controlled to emit detection ultrasonic waves towards the welding positions of the partition plates and the supporting columns; the depth of the upper surface and the depth of the lower surface of the welding seam corresponding to each partition plate are obtained; and according to the depth of the upper surface and the depth of the lower surface, the penetration depth of the welding seam corresponding to each partition plate is obtained. According to the fusion depth detection method of the radiation shielding structure, the depth of the upper surface and the depth of the lower surface of the welding seam corresponding to each partition plate are obtained through the detection probe so as to obtain the fusion depth of the welding seam corresponding to each partition plate, the accuracy of the detection result can be improved, operation is easy, the welding quality can be detected, the welding reliability is guaranteed, and the detection efficiency is improved. The use reliability of the radiation shielding structure is improved.

The invention provides a flanging sleeve internal part assembling frame and a flanging sleeve internal part product manufacturing method.The flanging sleeve internal part assembling frame comprises an upper supporting frame, a lower supporting frame, an inclined strut support, equal-height strips, an outer clamping ring and a clamping plate, and the upper supporting frame and the lower supporting frame are arranged on the upper side and the lower side of a flanging sleeve internal part product correspondingly; the device has the beneficial effects that the butt welding quality of scattered pipes at the upper end of a cylinder and multiple rows of pipe holes in an annular collecting box is effectively improved, and the flatness of an annular plane formed by the scattered pipes at the lower end of a flanging sleeve and the precision of butt joint with other cylinders after the bottom is bent are guaranteed; the geometric dimension and the product rigidity of the flanging sleeve are remarkably improved, subsequent welding deformation is prevented, and the manufacturing period of a product is remarkably shortened while the product quality is guaranteed.

The utility model discloses a protection device for a gas shielded welding wire conveying pipe, and relates to the technical field of conveying pipe protection devices. The clamping device comprises a bottom plate and two first protective shells, a clamping mechanism is arranged on the bottom plate, and the clamping mechanism comprises a second protective shell fixedly connected between the two first protective shells. According to the welding wire conveying device, stable and adaptive clamping environments can be provided for welding wire conveying pipes of different sizes within a certain range through the clamping mechanism, shaking and displacement of the conveying pipes are effectively avoided, it is ensured that the conveying pipes are always kept at the accurate positions in the brazing or desoldering process, the stability and accuracy of welding wire conveying are greatly improved, and the welding wire conveying efficiency is improved. Therefore, the welding wire can be accurately conveyed to a welding area at a constant speed, the problems of unsmooth conveying, blockage and the like are reduced, the damage risk of the welding wire is reduced, the performance stability of the welding wire is kept, the welding quality can be improved, it is guaranteed that welding spots are uniform and firm, welding wire waste caused by abnormal conveying can be reduced, and the production efficiency and economical efficiency are improved.

The application discloses integrated stove with windproof pot support, including body and stove table arranged on the body, pot support is placed on the stove table, pot support includes support bottom ring and support foot, support foot is located above support bottom ring, windproof plate is fixedly connected between two adjacent support feet. The manufacturing method of the windproof pot support is as follows: (1) part processing; (2) part assembly. The windproof plate of the application is located in the front side of the support bottom ring, which can protect the knob in the front side of the stove table, avoid the influence of high temperature on the knob, and the windproof plate also has a certain energy gathering effect, reduces the influence of environmental factors on the combustion condition, and reduces the heat radiation of combustion on the environment; in the welding process of the pot support, auxiliary positioning welding is carried out through the auxiliary table, so that the parts are accurately positioned, the relative movement between the parts in the welding process is avoided, the actual welding precision and welding quality are effectively improved, and the structural stability of the pot support after welding processing is ensured.

The utility model discloses a deep sea pile anchor fin plate welding clamp which comprises a base, upper clamping plates are symmetrically arranged on the two sides of the upper end of the base, the upper clamping plates are connected with the base through rotating shafts, a pile anchor containing cavity is formed between the two upper clamping plates and the base, and clamping plates used for clamping fin plates are arranged at the front ends of the upper clamping plates. A groove used for containing a fin plate is vertically formed in the middle of the base. The welding fixture is simple in structure and convenient to operate, effective welding stability can be guaranteed, production efficiency and welding quality are improved, perpendicularity of a fin plate and an anchor body is guaranteed, the effect of stabilizing the penetration posture of the anchor body can be effectively achieved, and the welding fixture can be repeatedly used.

A method and apparatus for automatically designing a steel mesh opening of a QFN device, and an electronic device and a storage medium. The method comprises: for a target device that has been subjected to QFN device verification, acquiring, as device parameters of the target device, a device pin height and a device appearance size in a device specification, a pin pad length, a pin pad width and a pad outer edge size of the target device on a PCB in ECAD data, and a preset pin pad steel mesh thickness and a preset pin bottom soldering tin thickness (S1); on the basis of the pin pad length and the pin pad width, determining a pin pad steel mesh opening parameter calculation model of the target device (S2); and on the basis of the device parameters of the target device and the pin pad steel mesh opening parameter calculation model, determining a pin pad steel mesh opening design result of the target device (S3). The method can accurately design a steel mesh opening for a QFN device, and can improve the quality of steel meshes and the welding quality, ensure product reliability, and reduce repair costs.

The invention relates to the technical field of welding devices, in particular to a metal plate multi-station welding table which comprises a welding table body, welding equipment, a station plate and a driving motor, and further comprises an adjusting assembly, a fixing assembly, a limiting assembly, a transmission assembly, a swing assembly and a cleaning assembly, the welding equipment is installed on the rear portion of the top of the welding table body, the adjusting assembly is installed on the top of the welding table body and located in front of the welding equipment, the driving motor is installed at the bottom of the adjusting assembly, and the station plates are installed on the top of the adjusting assembly in an annular array mode. The L-shaped plate, the rib plate and the limiting assembly are all installed on the top of the station plate, and the L-shaped plate and the rib plate are installed on the inner side of the limiting assembly. Through the arrangement of the adjusting assembly, the transmission assembly and the fixing assembly, the welding quality is improved, and the equipment fixing effect is improved on the premise that the feeding and discharging efficiency of workers is guaranteed.

The present invention relates to the field of welding equipment, and specifically to a multi-station simultaneous welding equipment, which includes a welding base. A plurality of wire pipes are fixedly installed on the welding base. A connecting wire passing through the wire pipes is arranged inside the welding base. A clamping plate is installed on one side of the welding base, and a welding box and a placement rack are arranged on one side of the welding base. In the present invention, during the process of the clamping plates separating from each other, the welding box and the placement rack are driven by a pushing component to move continuously closer to the wire pipes on one side. At the same time, during the moving process, the welding box and the placement rack are driven to separate from each other. After moving to a position close to the wire pipes, the welding box and the placement rack are closed together, and the connecting wire in the middle is clamped through the arc-shaped groove and the placement groove, so as to avoid the deviation of the connecting wire before or during welding, ensure the welding quality of the product, and guarantee the overall service life of the product after production.

The present invention discloses a welding auxiliary device, which is applied to the welding of the pole ear and the pole piece of a soft-pack battery cell. The welding auxiliary device includes a first fixing part and a second fixing part, wherein the first fixing part is used to fix the pole piece, and the second fixing part is used to fix the pole ear. The welding auxiliary device also includes a positioning structure, wherein the first fixing part and the second fixing part are assembled together through the positioning structure, and the welding positioning of the pole piece and the pole ear is realized through the positioning structure. The welding auxiliary device can ensure that the pole ear and the pole piece are aligned during welding, so that each battery cell welding point is consistent. The welding auxiliary device is easy to operate, reduces the welding error between the pole piece and the pole ear, can well ensure that the second welding point is not easy to crack, protects the pole piece from being damaged during the welding process, greatly improves the welding quality, and ensures the welding effect.