143results about "Welding with roller electrodes" patented technology

The invention relates to the technical field of metal net welding, in particular to intelligent metal net welding equipment which comprises a support, a seam welder and the like. A first electric sliding block is slidably connected to the support. A seam welder is fixedly connected to the first electric sliding block. According to the metal net edge rolling device, only one end of a metal net needs to be manually placed between the abutting rod and the clamping rod, then the metal net is automatically rolled into a cylindrical shape through the guide rod, manual edge rolling operation on the metal net is not needed, the manual labor amount is reduced, and the problems that due to manual operation, the two ends of the overlapped position of the metal net are prone to dislocation, and welding seams are inclined after welding is completed are solved. The problem that the metal net forms an irregular cylinder is solved; and the seam welding electrode wheel of the seam welding machine is used for rolling and welding the overlapped part of the metal net, so that the seam welding machine does not need to be manually held by hand for welding operation.

The invention discloses a reinforcement cage welding and forming integrated production line, which relates to the technical field of reinforcement processing and comprises a raw material storage mechanism, an automatic saw cutting mechanism, an automatic threading mechanism, a main reinforcement feeding mechanism, a main reinforcement welding mechanism, a skeleton automatic rotating mechanism, a skeleton cage supporting mechanism, a temporary supporting mechanism and a reinforcement winding welding mechanism. Unmanned operation of core procedures such as steel bar sawing, threading and blanking, rolling cage framework forming and outer-layer bar winding and welding is achieved, online automatic circulation of steel bar materials and semi-finished products is achieved, and online pre-connection of a steel bar cage can be achieved.

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 screen mesh welding equipment, and provides a welding device for a vibrating screen mesh, which is used for welding a screen mesh and a fixing frame and comprises a rack with a welding platform at the top. The lifting frame is arranged on the rack in a lifting manner; the pressing block is arranged on the lifting frame and can be driven by the lifting frame to move downwards to abut against the top face of the silk screen. The number of the positioning blocks is at least three, the positioning blocks are arranged on the rack in a sliding mode and arranged in the circumferential direction of the pressing block at intervals, the positioning blocks get close to or get away from one another after sliding, and the positioning blocks are configured to be capable of pushing the to-be-welded silk screen and the peripheral edge of the fixing frame so that the center of the silk screen can be aligned with the center of the fixing frame; the welding module is rotationally arranged on the lifting frame, and the welding module can horizontally swing and weld the peripheral edge of the wire mesh to the fixing frame. According to the technical scheme, the technical problem that in the prior art, the positioning efficiency is low before welding of the silk screen and the fixing frame is solved.

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 invention relates to a copper-lithium composite belt welding method which comprises the following steps: pretreating the surface of a copper material to remove a passivation layer on the surface of the copper material; the surface of the lithium material is pretreated, and the lithium material with the flat surface is obtained; the pretreated copper material, the pretreated lithium material and the protective layer are laminated and assembled to form a laminated body; welding and fixing the assembled laminated body; and removing the protective layer of the laminated body after welding is completed, and cutting the laminated body to a required size. According to the copper-lithium composite belt welding method, the surfaces of the copper material and the lithium material are pretreated and then laminated and assembled with the protective layer, the protective layer is arranged below the lithium material, the copper material is arranged on the upper surface of the edge of the lithium material, and during welding, welding equipment is in direct contact with the copper material, so that edge warping caused by uneven pressure on the edge of the lithium material is avoided; the welding consistency is improved; and through the welding method, the situation that the pole piece is welded through due to the viscosity and the softness temperature of the metal lithium is avoided, and the yield of the formed copper-lithium composite belt is increased.

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 present invention relates to a process method for high-bonding fastness composite special-shaped wire, belonging to the technical field of metal material processing and welding. The present invention forms a complete set of composite special-shaped wire preparation process through pre-oxidation, thermal composite, rolling welding, polishing, nitrogen purging, spraying lubricant, wire division, drawing and forming rolling multiple technical means, firstly obtains AgCdO / Ag composite layer through pre-oxidation and thermal composite process, and then obtains AgCdO / Ag-AgNi10 composite alloy through rolling welding, so that the composite special-shaped wire prepared by the present invention has higher performance and bonding fastness; in the present invention, a mixture of graphite and molybdenum disulfide is dispersed in glycerol, and a silane coupling agent KH550 is added and stirred to obtain a lubricant, which has better stability and heat resistance, so that it can play a better role in the preparation process of composite special-shaped wire, and graphite and molybdenum disulfide are both environmentally friendly materials, which are pollution-free to the environment.

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 utility model provides an underground diaphragm wall reinforcement cage seam welder reinforcing steel bar conveying device which comprises a reinforcing steel bar bundle arranged on the top of a rotating table, a positioning mechanism is arranged on the top of the reinforcing steel bar bundle, a jacking mechanism is arranged in the reinforcing steel bar bundle, a groove is formed in the rotating table, and the positioning mechanism is arranged on the top of the groove. A lifting frame is arranged in the groove, the top of the lifting frame is connected with a fixing ring, the positioning mechanism is used for clamping and fixing the rebar bundle and the jacking mechanism to prevent the rebar bundle from being separated, and the jacking mechanism is used for supporting the rebar bundle from the inside to keep stable conveying of the rebar bundle. According to the steel bar conveying device of the underground diaphragm wall steel bar cage seam welder, the top plate is unfolded to be attached to the inner ring of the steel bar bundle, the steel bar bundle is unfolded, and the situation that the conveying effect is affected due to mutual friction damage or shaking of steel bars between the steel bar bundles is prevented.

The utility model relates to a tractor and roll welding equipment, the tractor comprises a traction device, a quick return device and a control module, the traction device comprises a first driving assembly and a first driving wheel connected to the first driving assembly, and the first driving assembly has a first transmission ratio; the quick-return device comprises a second driving assembly and a second driving wheel connected to the second driving assembly, the second driving assembly has a second transmission ratio, and the control module is used for controlling the first driving assembly to drive the first driving wheel to rotate at the first transmission ratio so that the tractor can move at the first speed to be in a traction state. Or the second driving assembly is controlled to drive the second driving wheel to rotate at a second transmission ratio, so that the tractor can move at a second speed larger than the first speed to be in the fast return state. Therefore, the tractor can move at different speeds in a traction state and a quick return state, energy consumption waste and time waste are avoided, and production efficiency is improved.

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 invention relates to the technical field of seam welders, in particular to a seam welder for goods shelf plate welding, which comprises a rack, two clamping mechanisms, two longitudinal translation mechanisms, a transverse translation mechanism and a seam welding mechanism, the two clamping mechanisms are symmetrically fixed on the rack, the two longitudinal translation mechanisms are symmetrically fixed on the rack, the transverse translation mechanism is symmetrically fixed on the rack, and the seam welding mechanism is symmetrically fixed on the rack. The two longitudinal translation mechanisms drive the transverse translation mechanism to longitudinally and horizontally move above the clamping mechanism, the transverse translation mechanism is fixed to the two longitudinal translation mechanisms, and a roll welding mechanism is installed on the transverse translation mechanism. The goods shelf stand column welding device has the beneficial effects that goods shelf stand columns can be fixed below the welding table top through the two clamping mechanisms capable of moving oppositely, net plates can be welded to the side walls of the goods shelf stand columns conveniently, gaps are formed between the clamping mechanisms and the rack, the width of the single clamping mechanism can be freely adjusted, clamping and fixing are convenient when the stand columns are welded to the two sides of the net plates, and the welding efficiency is improved. And the goods shelf plate welding efficiency is improved.

Provided is a manufacturing apparatus for a panel body or the like that can cut a panel body into a size according to an order with a small dead area while continuously flowing a plate material in a continuous production line. 【Solution means】The manufacturing apparatus for the air-conditioning panel 10 includes a plate material supply unit 100 that continuously supplies two plate materials from two uncoilers around which the plate material 11 is wound in a coil shape, a welding unit 600 that welds the two supplied plate materials 11, a cutting unit 700 that cuts the two supplied plate materials 11, and a control device 900 that controls these. The control device 900 controls the welding unit 600 so as to perform welding at predetermined lengths in the supply direction of the two supplied plate materials 11, and to perform multiple-pass welding, which is two-pass welding for at least two of a plurality of welding points. The control device 900 identifies two of the multiple-pass welded points as cutting planned points, and controls the cutting unit 700 to perform cutting between the multiple-pass welds at the identified cutting planned points.

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 present invention relates to a rolling welding machine, in particular to an automatic rolling welding machine for steel bar skeletons of concrete products with special-shaped cross-sections. The machine comprises a machine base, a pulling mechanism is provided at the head of the machine base, a clamping mechanism is provided on the pulling mechanism, a gantry is provided at the middle of the machine base, a rotating disk is provided in the gantry, a rotating disk driving mechanism is provided at the machine base, a tail seat is provided at the tail of the machine base, a plurality of radial slideways are provided in the rotating disk, a welding electrode assembly is installed in the slideway, a central axis is provided between the center of the rotating disk and the tail seat, a profiling die assembly is provided at the inner end of the central axis, and the profiling die assembly matches the special-shaped steel bar skeleton. The machine can produce steel bar skeletons with various special-shaped cross-sections and variable cross-sections, improve production efficiency, and have low production costs.

The utility model discloses a seam welder copper disc which comprises a copper disc body and a plurality of rolling units installed on the copper disc body, the rolling units are installed along the side face of the copper disc body, the rolling direction of the rolling units is the same as the moving direction of main ribs, each rolling unit comprises a bearing portion, and the main ribs make contact with the bearing portions. The rolling units are arranged on the copper disc body, friction between the main reinforcements and the copper disc body is reduced, meanwhile, the rolling units corresponding to the reinforcement cages in shape and specification are arranged on the copper disc according to the reinforcement cages of different design specifications and used for containing the main reinforcements, and meanwhile the rolling units are installed on the two sides of the copper disc correspondingly, so that installation of the rolling units is facilitated; the relative positions of the rolling units and the copper disc are arranged, meanwhile, the rib passing grooves are formed, the design size of the reinforcement cage is guaranteed, and the problems that welding with main ribs is not firm, and the overall dimension of cage ribs is small are solved.