104results about "Welding with roller electrodes" patented technology

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

The invention relates to the technical field of steel bar seam welders, and discloses an electric pole steel bar framework automatic seam welder which comprises a bottom frame, a top frame is fixedly connected to the top of the bottom frame, an inclined side sliding rail is arranged at the top of the bottom frame, a fixing frame is slidably connected to the top of the inclined side sliding rail, and a rolling assembly is arranged in the fixing frame. A fixing frame is fixedly connected to the interior of the rolling assembly, a positioning ring is fixedly connected to the exterior of the fixing frame, a positioning frame is fixedly connected to the interior of the positioning ring, a power assembly is arranged in the positioning frame, a sliding disc is rotationally connected to one side of the power assembly, and a rotating rod is rotationally connected to one side of the sliding disc. The wedge-shaped block can adapt to the shape of the main reinforcement, the contact area is increased, the clamping force is uniform, the main reinforcement is prevented from being damaged, peripheral clamping is achieved, the rotating ring is matched with the rolling groove through the rolling wheel to limit self displacement, peripheral and axial fixing of the main reinforcement is achieved at the same time, deviation and movement of the main reinforcement are avoided, stability of a reinforcement cage is ensured, and a guarantee is provided for roll welding precision and quality.

The application discloses a quartz crystal oscillator base sealing method and belongs to the technical field of components and elements. The technical key point is that the upper cover and the base with a KV ring are sealed by a rolling electrode. The resistance of the upper cover is R1, the surface resistance of the KV ring of the base with the KV ring is R2, the resistances of the upper cover and the base on two sides are R5 and R6 respectively, and the maximum output power of the rolling electrode is P max . P max , R1, R5, R6 and R2 need to satisfy the following conditions: P max ·[1+R2 / (R5+R6)] ‑1 ·[1+(R5+R2+R6) / R1] ‑1 is greater than or equal to [P 热阈值 ]. [P 热阈值 ] represents the heat power threshold of the resistances of the upper cover and the base on two sides during the sealing of the rolling electrode. The technical scheme can improve the air tightness of the quartz crystal oscillator.

The application relates to a seam welding packaging device and relates to the technical field of electronic component packaging. The seam welding packaging device comprises a machine shell, a positioning mechanism, a feeding mechanism, a material moving mechanism and a packaging mechanism. The machine shell is provided with a sealed cavity, and the sealed cavity is provided with a mounting seat. The positioning mechanism comprises a positioning table arranged on the mounting seat. The feeding mechanism comprises two feeding assemblies arranged in the sealed cavity. The two feeding assemblies are arranged in the left-right direction at intervals. One of the two feeding assemblies is used for supplying a base body, and the other feeding assembly is used for supplying a cover body. The material moving mechanism comprises two material moving assemblies arranged on the mounting seat. One of the two material moving assemblies is used for moving the base body to the positioning table, and the other material moving assembly is used for moving the cover body to the base body on the positioning table. The packaging mechanism comprises a seam welding machine arranged in the sealed cavity. The seam welding machine is movably arranged, so that the roller electrode of the seam welding machine can roll and press weld the base body and the cover body.

The present application relates to a kind of based on roll welding mechanism preparation steel reinforcement cage precision welding method, the method includes initial coiling data acquisition, welding execution, welding fusion determination, post-welding data acquisition, welding point judgment and repair welding step, by collecting the image of intersection point before and after welding, the relative position is extracted, combined with the thermal capacity judgment parameter obtained by thermal imaging, respectively generate offset determination score and welding determination score, fusion calculation virtual welding determination score to accurately identify virtual welding point.The present application constructs the whole process closed-loop control system of quality determination, geometric determination, dynamic repair welding, repair welding verification and to physical marker traceability, realizes accurate identification of virtual welding, efficient repair welding and quality whole link control, avoids traditional process defects, improves the overall welding quality and production stability of steel reinforcement cage, ensures that product meets the stringent acceptance standards of engineering, applicable to steel reinforcement cage roll welding large-scale production scene.

The application relates to a reinforcing cage seam welding device for reinforced concrete pipe manufacturing and relates to the technical field of reinforcing cage processing; the device comprises a fixing frame, a fixing disc rotatably arranged on the fixing frame, a moving frame slidably arranged on one side of the fixing frame, a moving disc rotatably arranged on the moving frame, and the fixing disc and the moving disc are coaxially arranged; a plurality of groups of guide pipes for main reinforcement penetration are arranged on the fixing disc; a plurality of groups of fixing pipes for main reinforcement penetration are arranged on the moving disc; the guide pipes and the fixing pipes are arranged in one-to-one correspondence respectively, and each guide pipe is coaxial with the corresponding fixing pipe; all the guide pipes and the fixing pipes are distributed at intervals around the central axis of the fixing disc, and all the guide pipes and the fixing pipes are distributed along the radial direction of the fixing disc; a locking mechanism for limiting the main reinforcement from being separated from the fixing pipe is arranged on the moving frame. The application has the effect of facilitating the production of reinforcing cages with different diameter sizes.

The invention relates to the field of steel drum production, and particularly discloses a steel drum body seam welding machine which comprises a rack, and a portal frame and a plate supporting frame are arranged on the rack; a plate is rolled into a barrel body through the rolling device, the barrel body is conveyed in the direction close to the welding device through the second conveying device, the barrel body can conveniently enter the positioning device through the obliquely-arranged guide rods, and the barrel body can be extruded inwards through positioning of rollers on the positioning rods on the positioning device; the edges of the welding positions of the barrel bodies are overlapped and stacked, so that the barrel bodies are preliminarily positioned; an upper clamping plate and a lower clamping plate on the barrel body clamping device clamp the stacking part of the welding position of the barrel body and move along with the barrel body, it is guaranteed that the stacking part of the welding position is kept stable when the barrel body passes through the sizing device and the welding device, and therefore the welding quality is improved. The friction blocks abut against the peripheries of the rolling wheels, so that rotation of the rolling wheels is limited, the barrel body located among the three positioning rods is limited, and the barrel body clamping device can clamp the barrel body conveniently.

A mash seam welding device (100) has: a first electrode wheel (1); a second electrode wheel (2); and an electrode wheel pressing unit (3). The second electrode wheel (2) faces the first electrode wheel (1). The electrode wheel pressing unit (3) presses the first electrode wheel (1) against a material (90) to be welded along a first direction (101) from the first electrode wheel (1) toward the second electrode wheel (2). The electrode wheel pressing unit (3) has: a first servo motor (11); a first feed screw section (14); an electrode wheel support section (15); and an electrode wheel guide section (16). The central axis of the first feed screw section (14) intersects the first electrode wheel (1).

The invention discloses a tool and method for assisting in achieving automatic roll welding of an annular radiator. The tool comprises a feeding temporary storage assembly, a guide pressing wheel assembly, a locating vision assembly, an auxiliary supporting assembly, a water receiving box assembly, a horizontal sliding assembly, a frame body assembly and a rotating assembly. The frame body assembly drives the horizontal sliding assembly and the rotating assembly to complete feeding, transferring and welding position adjustment of the annular radiator and is matched with the locating visual assembly to determine the accurate position of a welding seam. The guide pressing wheel assembly and the auxiliary supporting assembly press and support the annular radiator from the outer side and the inner side correspondingly, and it is guaranteed that the roll welding wheel accurately welds the corrugated plate to the surface of a cylinder of the annular radiator. According to the automatic roll welding method, traditional manual auxiliary welding is replaced, the welding efficiency is improved, and the quality consistency and stability of roll welding are guaranteed.

The invention relates to seam welding packaging equipment, and relates to the technical field of electronic component packaging, the seam welding packaging equipment comprises a machine shell, a positioning mechanism, a material supply mechanism, a material moving mechanism and a packaging mechanism, the machine shell is provided with a sealing cavity, a mounting seat is arranged in the sealing cavity, the positioning mechanism comprises a positioning table arranged on the mounting seat, and the sealing cavity is provided with a sealing groove; the feeding mechanism comprises two feeding assemblies arranged in the sealing cavity, the two feeding assemblies are arranged in the left-right direction in a spaced mode, one feeding assembly is used for supplying a base body, the other feeding assembly is used for supplying a cover body, the material moving mechanism comprises two material moving assemblies installed on the installation base, the two material moving assemblies are arranged corresponding to the two feeding mechanisms correspondingly, and the two material moving assemblies are arranged on the installation base. Wherein one feeding assembly is used for transferring a base body to the positioning table, the other feeding assembly is used for transferring a cover body to the base body of the positioning table, the packaging mechanism comprises a seam welding machine arranged in the sealing cavity, and the seam welding machine is movably arranged so that a roller electrode of the seam welding machine can conduct rolling welding on the base body and the cover body.

The application provides a composite current collector welding quality determination method and device and electronic equipment. The composite current collector welding quality determination method comprises the following steps: determining the target data characteristics corresponding to the welding target copper foil of the to-be-detected composite current collector according to the roller position data, roller impact force data, roller vibration data, line speed data of the roller welding machine and line speed data of the front and rear pressure rollers in the to-be-detected composite current collector; inputting the target data characteristics into the trained welding quality detection model to determine the target welding quality score of the target copper foil, wherein the trained welding quality detection model is obtained by training the historical data characteristics of the to-be-detected composite current collector welding historical copper foil; and determining whether the welding quality of the target copper foil by the composite current collector is qualified based on the target welding quality score and the preset peak power of the roller welding machine. The application realizes real-time judgment and monitoring of the welding quality of the composite current collector.

The utility model discloses a seam welder for iron bucket production belongs to iron bucket production technical field, aims at solving the effect of position limiting of iron bucket far from gyro wheel electrode under prior art is poorer, and iron bucket is easy to displace at the place of waiting for welding, thereby influences the problem of welding quality. Including main part and limiting component, the middle position of main part side surface is installed with round bar, and the end of round bar is installed with lower gyro wheel electrode, and the upper end side surface of main part is installed with top plate, and the first electric telescopic handle is installed with first electric telescopic handle through in top plate, and the lower end of first electric telescopic handle is connected with mounting panel, and the upper gyro wheel electrode is installed on mounting panel. The seam welder for iron bucket production, through the setting of limiting component, is convenient for limiting the part of waiting for welding of iron bucket, prevents the displacement of sheet iron, guarantees the welding quality, and under the action of spring, drives the pressure wheel to always resist the iron bucket, guarantees the limiting effect, and the friction of pressure wheel and iron bucket is small, and it is convenient to push the iron bucket and move.

The invention relates to a method for the hybrid joining of at least two very thin joining partners (1) made of one or more electrically conductive and weldable materials. The method initially comprises a process step in which the at least two very thin joining partners (1) are formed, coated, provided with a local application, or their surface is structured such that defined cavities (2) and defined joining points (3) are created. The at least two very thin joining partners (1) are joined together such that adhesive channels (4) and / or flow channels (5) are formed from the defined cavities (2), and contact points (6) are formed from the defined joining points (3).The at least two very thin joining partners (1) are wholly or partially coated with an adhesive (7) on at least one side, or the defined cavities (2) from which the adhesive channels (4) are formed are filled with adhesive (7), or the formed adhesive channels (4) are filled with adhesive (7). A material-bonded connection is simultaneously produced at at least two contact points (6) by resistance welding.

The invention discloses a weld seam roll welding system for metal plate machining, and relates to the field of manufacturing of metal cutting and welding equipment such as plasma arc welding machines, the weld seam roll welding system comprises a base and roller electrodes symmetrically and rotatably arranged on the base, and further comprises a working ring and a mounting ring, the working ring and the mounting ring are respectively clamped at the two axial ends of the roller electrode, so that the working ring sleeves the outer side of the roller electrode, and the working ring and the mounting ring are fixed in an inserting manner. According to the weld seam roll welding system for metal plate machining, the working ring and the mounting ring are connected in an inserted mode so as to be clamped on the roller electrode, and the working ring is arranged on the outer side of the roller electrode in a sleeving mode so that the pressing ring part can be located on the radial outer side of the roller electrode to form a working face; and when the working surface on the pressing ring part is damaged and generates a pit during long-time welding operation, the working ring can be quickly replaced and maintained by disassembling the working ring and the mounting ring, so that the problem of low maintenance efficiency caused by the fact that the roller electrode of the traditional roll welding equipment needs to be integrally disassembled is solved.

The embodiment of the invention discloses a crystal oscillator mixed seal welding method based on partition stripping. The method comprises the steps that a base and a kovar alloy cover plate with a nickel-plated gold layer are prepared; performing laser cleaning on the lower surface of the kovar alloy cover plate corresponding to the short straight edge sealing area, removing the nickel-gold plating layer in the area, and meanwhile, retaining the nickel-gold plating layer in the long straight edge sealing area on the kovar alloy cover plate; the kovar alloy cover plate subjected to laser cleaning correspondingly covers the base, and a long straight edge sealing area of the kovar alloy cover plate is subjected to sealing welding through parallel seam welding; and the short straight edge sealing area of the kovar alloy cover plate is subjected to sealing welding through laser welding. According to the method, through partition surface treatment, the high-airtightness seal welding reliability is ensured, meanwhile, the advantages of high-efficiency continuity of electric resistance welding and gas control of laser welding are achieved, and the method is particularly suitable for packaging and manufacturing of small-sized and high-stability patch crystal oscillators such as 3215 and the like.

The present invention provides a panel manufacturing apparatus that allows for the continuous flow of sheet metal in a continuous production line while minimizing dead areas and enabling cutting to the ordered size. [Solution] The manufacturing apparatus for the air conditioning panel 10 includes a sheet material supply unit 100 that continuously supplies two sheets of sheet material from two uncoilers in which sheet material 11 is wound into a coil shape, a welding unit 600 that welds the two supplied sheets of sheet material 11, a cutting unit 700 that cuts the two supplied sheets of sheet material 11, and a control device 900 that controls these. The control device 900 controls the welding unit 600 to weld at predetermined length intervals in the supply direction of the two supplied sheets of sheet material 11, and to perform double-line welding of at least two of the multiple welding locations, identifies two of the double-line welded locations as locations to be cut, and controls the cutting unit 700 to perform cutting between the double-line welds of the identified locations to be cut.

The present application relates to the technical field of end seam welding, and discloses a high-flanging sheet scattered short-side end intelligent seam welding equipment adopting a gap seam welding wheel, which comprises a conveying frame, an end seam welding machine arranged on the side wall of the conveying frame, and a seam welding unit arranged on the end seam welding machine, wherein the seam welding unit comprises a seam welding component and an angle adjusting component arranged on the end seam welding machine. Through the arrangement of the seam welding unit, geometric interference can be eliminated, the top of the seam welding wheel and the high-flanging part are prevented from being in contact and stuck, welding continuity is ensured, the service life of the equipment is prolonged, the maintenance cost is reduced, the seam welding wheel is always perpendicular to the welding area, the weld forming is optimized, the welding defect rate is reduced, the sealing performance and structural strength of the weld are improved, and the operation reliability of the component is ensured.

The utility model relates to a parallel seal welding device, and relates to the technical field of seal welding equipment. The device comprises a feeding mechanism, a material taking and feeding mechanism, a seal welding position adjusting mechanism, a seal welding mechanism and a supporting mechanism. Wherein the feeding mechanism is used for placing a to-be-sealed device; the material taking and feeding mechanism is responsible for sucking and conveying devices to the seal welding position adjusting mechanism. The seal welding position adjusting mechanism can accurately adjust the position of the device so as to ensure alignment with the seal welding mechanism; the sealing and welding mechanism drives a sealing and welding copper wheel on a welding tool to perform sealing and welding operation by using double independent linear modules; the supporting mechanism stably supports the material taking, feeding and seal welding mechanism, all the mechanisms work cooperatively, and the full-automatic process from device feeding to precise seal welding is achieved. The whole device is reasonable in design, the problem of position deviation of the device to be sealed and welded can be effectively solved, and the welding quality and efficiency are ensured.

The invention provides a resistance roll welding device and application thereof, the core of the resistance roll welding device is that a split type design roll welding wheel assembly is adopted, the upper rim of an upper roll welding wheel is provided with unique pressing sheets arranged in a piano key mode, and the pressing sheets and adjacent grooves jointly form a concave-convex structure capable of rotating along with the upper roll welding wheel. The concave-convex structure and the fixedly-arranged spring ejector pin assembly have a synergistic effect, in the rotating process of the upper roll welding wheel, the end of the ejector pin is always kept in contact with the concave-convex structure, an electric contact at the tail of the ejector pin can be driven to make contact with or be separated from an electrifying terminal through axial displacement, and therefore precise programmed control over welding current is achieved. When the resistance roll welding device is applied to stitch welding of the multi-layer extremely-narrow-spacing thin plate girth, the device can effectively stretch into a narrow gap, accurate pressure application to an independent area is achieved, the technical bottleneck of welding of the multi-layer extremely-narrow-spacing thin plate girth is thoroughly broken through, and the welding efficiency is improved. And the welding quality, the process precision, the production efficiency and the reliability are remarkably improved.

The utility model relates to a roll welding device for a small-diameter reinforcement cage. The small-diameter reinforcement cage roll welding device comprises a supporting plate, supporting rods used for adjustment are evenly installed on the bottom face of the supporting plate, the lower ends of the supporting rods are sleeved with supporting cylinders in a sliding mode, the upper surface of the supporting plate is rotationally connected with a disc used for supporting, the upper surface of the disc is fixedly connected with guide rails, and the guide rails are arranged in a radial mode. The upper surface of the guide rail is in sliding connection with a sliding block used for adjustment, and the sliding block is fixedly connected with a cylinder used for installing reinforcing steel bars. Through cooperative arrangement of the supporting plate, the disc, the guide rail and the sliding block, the device can be more convenient and practical, by means of cooperative arrangement of the supporting plate and the disc, a worker only needs to stand in situ and rotate the disc during welding, welding of different positions of a reinforcement cage can be completed, and the welding efficiency is improved. The device can be suitable for welding reinforcement cages of different sizes.

A mash seam welding device (100) is provided with a carriage frame (3), a lower blade (1), a lower blade driving unit (10), an upper blade (2), and an upper blade driving unit (20). The carriage frame (3) has an upper frame section (32) and a lower frame section (31). The lower frame section (31) faces the upper frame section (32). The lower blade driving unit (10) presses the lower blade (1) against two workpieces to be welded (90) along a first direction (101) from the lower frame section (31) toward the upper frame section (32). The upper blade driving unit (20) presses the upper blade (2) against the two workpieces to be welded (90) along a direction opposite to the first direction (101). At least part of the lower blade driving unit (10) is located inside the lower frame section (31).

A roll press apparatus for manufacturing an electrode plate, the roll press apparatus including a frame portion, a first pressure roller rotatably fixed on the frame portion to press a first surface of the electrode plate, the first pressure roller being configured to have a first expansion roller protruding at each of opposite ends of the first pressure roller, a second pressure roller rotatably fixed on the frame portion to pressurize a second surface facing the first surface of the electrode plate, the second pressure roller being configured to have a second expansion roller protruding at each of opposite ends of the second pressure roller, and a driver configured to provide a driving force to the first pressure roller and the second pressure roller.

The utility model relates to a precise traction trolley device, which comprises a gear, a servo motor, a rack, a linear slide rail, a reinforcement cage traction disc and a traction frame, the traction frame is a main body frame, one end of the reinforcement cage traction disc is fixed in front of the traction frame, the other end of the reinforcement cage traction disc is arranged on a reinforcement cage, the linear slide rail is placed on the ground, and the rack is arranged on the rack. The bottom end of the traction frame is placed on the linear sliding rail, the rack is installed on the inner side face of the linear sliding rail, the servo motor is installed in the traction frame, the gear is installed on the servo motor and meshed with the rack, the servo motor drives the gear to rotate, and the gear and the rack drive the traction frame to move along the linear sliding rail. By the adoption of the accurate traction trolley device, it can be guaranteed that in the cage rib roll welding process, the accuracy of the interval of wound spiral ribs is accurately controlled, the quality of the whole product can be improved, the welded appearance of the cage ribs is neat, the usage amount of raw materials of the spiral ribs can be saved by accurately controlling the interval of the spiral ribs, and the production cost is reduced.

The auxiliary bracket device for the seam welder comprises an air cylinder, the output end of the air cylinder is fixedly connected with a first limiting block, the outer portion of the first limiting block is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a connecting shaft, and the outer portion of the connecting shaft is fixedly connected with a plurality of first push wheels. A second limiting block is fixedly connected to the upper surface of the building table, non-slip mats are arranged outside the first limiting block and the second limiting block, an air extractor is arranged on the upper surface of the building table, and an inlet of the air extractor is fixedly communicated with an air collecting hood. By means of the structure, axial movement of a workpiece in the welding process can be effectively prevented through the movable limiting mechanism provided with the anti-skid pad, the probability of occurrence of axial movement can be reduced by properly increasing friction force, limiting the movement range of the workpiece and limiting the rotating speed of the workpiece, and then the welding stability and quality are improved; in addition, harmful gas is treated through the gas collecting hood, and environmental pollution is prevented.

To provide a seam-welding device that can perform resistance-welding in accordance with a shape of a work-piece to be welded and a required nugget width.SOLUTION: A seam-welding device 10 is provided with: a disk-like first electrode 16 comprising an outer peripheral surface 16A that contacts a first surface 24A of a first steel plate 24; a first dividing plate 20 which comprises an outer peripheral surface 20A formed in a circular arc shape when viewed from a thickness direction and enables the outer peripheral surface 20A to contact a second surface 26A at the opposite side of the first steel plate 24 in a second steel plate 26 overlapped with the first steel plate 24; and a second dividing plate 22 which comprises an outer peripheral surface 22A that is turned around the thickness direction with respect to the first dividing plate 20 to extend in a circumferential direction or the thickness direction of the outer peripheral surface 20A and formed in a circular arc shape when viewed from the thickness direction, which further has a second electrode 18 that can resistance-weld the first steel plate 24 to the second steel plate 26 while holding the first electrode 16, the first steel plate 24 and the second steel plate 26.SELECTED DRAWING: Figure 1

The utility model discloses a seam welder for a filter, which relates to the technical field of seam welders and comprises a welding wheel, a water outlet cover with an inverted U-shaped cross section is arranged above the welding wheel, the top of the welding wheel is partially arranged in the water outlet cover, nozzles are arranged on two sides of the inner wall of the water outlet cover, and a water inlet is arranged on the water outlet cover. By arranging the water outlet cover, the cooling area of the welding wheel is increased, and the cooling effect is improved; by arranging the lifting air cylinder, the water outlet cover can be conveniently and rapidly lifted to be separated from the welding wheel.

The invention relates to the technical field of welding machines, and particularly discloses a seam welder for precast concrete components, which comprises a base plate, a motor bracket is fixedly connected to the top of the base plate, a first driving motor is fixedly connected to the inner wall of the motor bracket, and a driving shaft of the first driving motor penetrates through the motor bracket and is fixedly connected with a first gear; a feeding device is fixedly connected to the part, away from the motor support, of the top of the base plate, a first gear ring is fixedly connected to one side of the feeding device, a fixed roller is fixedly connected to the side, away from the first gear ring, of the feeding device, and a radius adjusting device is fixedly connected to the end, away from the feeding device, of the fixed roller; the part, away from the radius adjusting device, of the top of the base plate is fixedly connected with an electric sliding rail, and the top of the electric sliding rail is fixedly connected with a first electric telescopic rod fixing end. The seam welder for the precast concrete component achieves the purposes of being easy and convenient to operate, high in welding efficiency and good in welding quality.

To provide a seam welding method of a thin steel plate.SOLUTION: Continuous processing of a thin steel plate measures a plate temperature of a thin steel plate before seam welding, and seam welds the thin steel plate, using a weld current value obtained by correcting influence on the measured plate temperature of the thin steel plate. As a weld current value It obtained by correcting the influence of the plate temperature, a following expression: It=IT(1+αt(T-t)) (where IT: reference weld current value (weld current value in a case in which the plate temperature is a reference plate temperature of T°C) (unit: kA), T: reference plate temperature (°C), t: measured plate temperature (°C), and αt: coefficient) is used. Thereby, especially, quality of a seam weld part of a high tensile thin steel plate is made stable, the continuous processing of the thin steel plate exhibits effects to prevent troubles including breakage of the seam weld part at the time of passing through a steel plate, and to prevent lowering of productivity and occurrence of malfunction articles.SELECTED DRAWING: Figure 2

The utility model belongs to the technical field of mechanical equipment, and particularly relates to a roll welding mechanism for a composite current collector tab material, which comprises a rack, an upper roll welding shaft and a lower roll welding shaft are arranged on the rack, a rotatable supporting roller is arranged at the front side part of the rack, a rotatable first compression roller is arranged at a feeding end, and a rotatable second compression roller is arranged at a discharging end. The supporting roller is used for providing upward supporting force for the membrane area of the composite current collector, so that the composite current collector has a relatively fixed supporting effect in the welding process, and the supporting roller is matched with the first pressing roller and the second pressing roller to provide downward pressure for the composite current collector; the composite current collector is arranged on the lower roll welding shaft, so that the membrane area of the composite current collector wraps the upper top of the supporting roller, a certain wrap angle is formed on the welding area of the composite current collector and the pair of metal membranes on the lower roll welding shaft through the wrapping and shaping, the wrap angle can restrain thermal expansion deformation at the welding moment, and then a welded product is smoother and better in binding force.

A welding positioning device for a reinforcement cage seam welder comprises a material distributing disc, two positioning discs, material taking blocks and a lifting material distributing table, the two positioning discs are arranged on a center shaft of the material distributing disc in a synchronous rotating mode, the material taking blocks are evenly distributed in the circumferential direction of the positioning discs, and the lifting material distributing table is arranged in the middle area of the two positioning discs. According to the lifting material distribution table, steel bars can be automatically arranged, the steel bars are clamped and fixed one by one in cooperation with the material taking blocks on the positioning disc, manual inserting and positioning are not needed, after the steel bars are all fixed by the material taking blocks, inserting and positioning of all the steel bars can be completed at a time only by rotating the positioning disc to enable the positioning disc to be aligned with the material distribution disc, and the labor intensity of workers is reduced. According to the scheme, the heavy operation of manually inserting the reinforcing steel bars is completely avoided, the labor intensity is remarkably reduced, and meanwhile the welding efficiency is greatly improved.