24results about How to "Improve welding productivity" patented technology

The invention discloses an H-shaped steel automatic welding roller way conveying system. Comprising a lower wing plate feeding line, a web feeding line, an upper wing plate feeding line, a lower wing plate and web assembly line, a T-shaped steel assembly welding straightening blanking transition line, a T-shaped steel assembly welding straightening blanking line, a web lifting turnover line, a T-shaped steel upper wing plate assembly line, an H-shaped steel assembly welding straightening blanking transition line and an H-shaped steel assembly welding straightening blanking line which are arranged in parallel in the same direction. The lower wing plate feeding line, the lower wing plate web assembling line, the T-shaped steel assembling, welding and correcting discharging line, the web feeding line, the upper wing plate feeding line, the T-shaped steel upper wing plate assembling line and the H-shaped steel assembling, welding and correcting discharging line are each composed of a plurality of roller bed units. The web lifting turnover line is composed of a plurality of lifting roller bed units; and the T-shaped steel assembling, welding and straightening blanking transition line and the H-shaped steel assembling, welding and straightening blanking transition line are respectively composed of a plurality of transition roller bed units. The problems that an existing H-shaped steel welding production line is high in labor intensity and low in efficiency, and safety factors exist in a working site can be solved.

The invention provides a titanium alloy current-assisted vacuum brazing tool and process method. The titanium alloy current-assisted vacuum brazing tool and process method comprises the steps that S1, a titanium alloy columnar body to be welded is machined; s2, TiZrCuNi brazing filler metal alloy powder is adopted for preparing a brazing middle layer; s3, polishing the welding surface of the titanium alloy cylindrical body to be welded; s4, the welding face of one to-be-welded titanium alloy base material is placed upwards, brazing filler metal alloy powder of a brazing middle layer is evenly spread, the welding face of the other titanium alloy base material is placed above the middle layer downwards, and a three-layer structure is formed; s5, a workpiece to be welded and a thermocouple are inserted into a titanium alloy current auxiliary vacuum brazing tool and then placed in a vacuum hot-pressing brazing furnace, graphite cushion blocks are arranged at the top of the upper-layer base metal and the bottom of the lower-layer base metal correspondingly, and an electrode pressing head makes contact with the graphite cushion blocks at the top of the upper-layer base metal; and S6, titanium alloy current auxiliary vacuum brazing is conducted. According to the method, the workpiece is rapidly and uniformly heated in a heating and current applying mode, and the titanium alloy brazed joint which is good in bonding strength and excellent in performance is prepared.

The application discloses an aerospace part welding vertical machining center and a using method thereof, and relates to the technical field of vertical machining centers.The vertical machining center comprises a rack, a welding mechanism and a lifting frame, the welding mechanism is fixedly arranged in the rack, the welding mechanism is used for automatically welding aerospace parts, the lifting frame is slidingly connected to the inner cavity of the rack, the inner part of the rack is provided with a protection mechanism capable of rotating to block splashes, and the outer part of the lifting frame is provided with a rotary driving mechanism capable of driving the protection mechanism to rotate.The application drives the protection mechanism to rotate by using the rotary driving mechanism when the aerospace parts are machined, the protection mechanism forms a physical barrier to prevent splashes from splashing onto the surface of the workbench of the rack 1, the subsequent manual cleaning process of workers is saved, the work efficiency is improved, the protection mechanism is reversely rotated by the rotary driving mechanism when the workers open the rack after the machining is completed, the physical barrier is automatically contacted, the workers can directly take down the fixed aerospace parts and install the next parts, and the work efficiency is further improved.

The application discloses a welding method for a high-temperature alloy casing assembly with large wall thickness difference, and adopts double electron beam synchronous welding, generates an electromagnetic field by using an electromagnetic lens inside a welding machine according to the symmetrical positions of two welds, realizes the double electron beam angle deflection function of the electron beam welding machine, deflects the electron beam flow in real time at a high frequency during the welding travel, makes the electron jump at a high frequency of 0.05-500 kHz between two adjacent welds, and obtains the effect that the electron beam synchronously covers and welds the two side welds. The application solves the problems of weld undercutting and burning, effectively reduces the residual stress of the weld, reduces the welding deformation, improves the welding assembly precision of the high-temperature alloy casing parts, and effectively improves the product quality, the use performance and the failure rate of the high-temperature alloy casing.

The invention belongs to the field of rotary friction welding, and discloses a method and a related device for predicting the fracture position of a rotary friction welding joint, and a three-dimensional thermal coupling model established based on Abaqus software is utilized to obtain the fracture position of the rotary friction welding joint under preset rotary friction welding parameters. Peak temperature and peak equivalent plastic strain of all grid points in an area where the rotary friction welding head is located at the fracture position of the rotary friction welding head to be predicted; the peak temperature and the peak equivalent plastic strain of all the grid points of the rotary friction welding head are processed through the BP neural network prediction model meeting the prediction precision, and microhardness values corresponding to all the grid points are obtained; and according to the microhardness values corresponding to all the grid points, a weak area on the rotary friction welding head is determined, and the weak area serves as the predicted fracture position of the rotary friction welding head. According to the method, the weak area of the rotary friction welding head can be rapidly screened, the problem is solved in a targeted mode, a guiding effect is provided for actual welding production, and the welding production efficiency is greatly improved.

This utility model discloses a clamping device for welding the side wall panel and diagonal brace of a railway freight car, relating to the field of railway freight car manufacturing. It includes: a connecting rod, spanning across the railway freight car and arranged along its width; a moving mechanism at each end of the connecting rod, the moving mechanism comprising multiple moving rollers that engage with the upper side beam of the railway freight car; two pairs of slide rails, each pair vertically positioned at both ends of the connecting rod, with two slide rails in each pair positioned on the inner and outer sides of the side wall of the railway freight car; a lifting mechanism slidably mounted on the slide rails, the output end of which extends and retracts horizontally, engaging with the diagonal brace and the side wall panel; this clamping device ensures that the welded assembly meets the dimensional requirements of the railway freight car, reduces the number of personnel involved in the welding process, and improves welding efficiency.

The present application relates to a barbecue grill rotary automatic spot welding machine and a welding method, and relates to the technical field of welding equipment, which includes a disc frame, a rotating motor for driving the disc frame to rotate is installed at the lower end of the disc frame, a plurality of positioning plates are arranged equidistantly around the axis of the disc frame, a limiting ring groove for placing a frame in the barbecue grill is provided on the positioning plate, a plurality of limiting straight grooves for placing transverse ribs in the barbecue grill are provided on the positioning plate, the limiting straight grooves are connected to the limiting ring grooves, a welding hole for welding the frame and the transverse ribs is provided on the positioning plate, and a welding mechanism for welding the transverse ribs and the frame is provided on one side of the disc frame. The present application has the effect of improving the production efficiency of barbecue grill welding.

The application provides a battery string welding method. The battery string welding method comprises the following steps: preparing a plurality of battery pieces (1) of a same battery string; preparing at least one continuous welding strip; making the continuous welding strip sequentially contact and weld with the same surface of the plurality of battery pieces (1) through one or more continuous pulling of the continuous welding strip to form a conductive path; and completing the welding of the whole battery string; wherein the continuous welding strip is not bent during the welding process and keeps a continuous extension state after the welding is completed. The battery string welding method can reduce the problem of hidden cracks of the welding strip, avoid the risk of less welding strips, improve the welding capacity, improve the production efficiency, and improve the battery performance.

This invention relates to the field of galvanized steel strip welding technology. The invention discloses a welding positioning device for galvanized steel strip production, comprising a horizontal platform, a release frame on one side of the top of the horizontal platform, a laser cutting machine on the front side of the release frame (the laser cutting machine is tilted), a side seat on the side of the horizontal platform, a first drive motor at one end of the side seat, a lead screw rotatably connected to the output end of the first drive motor, the lead screw rotatably mounted on the side seat, a drag seat slidably connected to the lead screw, a rack fixedly connected above the side seat, and a control frame fixedly connected to the top of the drag seat. This device causes the two ends of the steel strip to curl and align with each other, aligning the beveled ends. A magnetic strip is used to limit the movement of the two ends of the steel strip, allowing for welding of the steel strip ends. In this operation, technicians are not required to continuously pull the steel strip and perform curling and aligning, effectively improving the efficiency of steel strip welding production.

A kind of low vacuum laser welding method for GH4169 high-temperature alloy and SS304 stainless steel, the present application belongs to laser welding technical field.The present application solves the problem that the existing welding method cannot realize the low-cost and high-quality connection of medium thickness and above GH4169 alloy and SS304 stainless steel.One, welding assembly;Two, low vacuum laser welding;Three, heat treatment.The present application is used for the low vacuum laser welding of GH4169 high-temperature alloy and SS304 stainless steel.

The present invention discloses a wedge-shaped screen spot welding device, which belongs to the technical field of screen spot welding. The wedge-shaped screen spot welding device comprises a fixed base, wherein fixed side plates are symmetrically fixedly connected at both ends of the fixed base, a driving mechanism is installed between the fixed side plates, an angle adjustment mechanism is fixedly installed above the driving mechanism, a flipping mechanism is fixedly connected above the angle adjustment mechanism, and a wedge-shaped screen is arranged in the flipping mechanism; mounting seats are symmetrically fixedly connected at both sides of the fixed base, and a mounting plate is fixedly connected between the two mounting seats. The present invention designs a matching angle adjustment mechanism so that the staff can make corresponding adjustments according to the welding angle required at the welding point of the wedge-shaped screen, and at the same time, by designing the flipping mechanism and the cooperation of the limit block, the wedge-shaped screen can complete the automatic flipping process without stopping or manual intervention.

The application discloses an aluminum alloy box unequal-thickness butt joint friction stir welding method, which comprises the following steps: process placing of an upper panel of an aluminum alloy box, increasing a friction stir welding arc receiving plate area; cleaning the left panel, the right panel and the upper panel of the aluminum alloy box, adopting mechanical polishing and cleaning; positioning and assembling the left panel, the right panel and the upper panel on a tool, controlling the assembly gap and the misalignment to be not greater than 0.5 mm; setting the parameters of the friction stir welding, and welding the weld joints between the left panel and the upper panel and between the right panel and the upper panel. The aluminum alloy box unequal-thickness butt joint friction stir welding method utilizes the advantages of the friction stir welding to improve the welding deformation, improves the welding quality and improves the production efficiency.

The utility model discloses a rear floor framework assembly which comprises a rear floor framework, a first longitudinal beam, a second longitudinal beam, a first cross beam and a second cross beam, the first cross beam and the second cross beam are arranged between the first longitudinal beam and the second longitudinal beam in parallel, and a first welding seam is arranged between the first cross beam and the first longitudinal beam. A second welding seam is arranged between the first cross beam and the second longitudinal beam, a third welding seam is arranged between the second cross beam and the first longitudinal beam, and a fourth welding seam is arranged between the second cross beam and the second longitudinal beam; the reinforcing plates comprise the first reinforcing plate installed on the first longitudinal beam and the second reinforcing plate installed on the second longitudinal beam. The utility model further discloses an automobile with the rear floor framework assembly.

The utility model relates to the technical field of welding, in particular to a resistance welding electrode assembly which comprises a first electrode and a second electrode, the first electrode comprises a first electrode body and a first electrode cap, and the second electrode comprises a second electrode body and a second electrode cap. The second electrode cap is provided with a second end face, and the diameter of the first end face is larger than that of the second end face. Through accurate heat distribution, the welding parameter adjusting frequency is reduced, long-time stable welding is achieved, the production takt time can be effectively shortened, the comprehensive manufacturing cost is reduced, and the requirement of industrial production for efficient and stable welding is met.

The application relates to the technical field of arc welding machines, and discloses a high-precision plasma arc welding machine and an automatic wire feeding device thereof, wherein the high-precision plasma arc welding machine comprises an arc welding machine base, a portal frame is arranged at the top of the arc welding machine base, two moving seats are symmetrically arranged at the top of the arc welding machine base, an extension cylinder is arranged on the portal frame, a welding torch is arranged at the output end of the extension cylinder, a rotating ring is arranged on the inner side of the moving seat, a thin pipe body is inserted into the inner side of the rotating ring, and a spraying liquid suction unit arranged in the thin pipe body is further arranged. The high-precision plasma arc welding machine adopts a mode of directly spraying cooling liquid on the inner wall of the thin pipe. The cooling liquid directly acts on the back of a weld and a near-weld area, can instantaneously take away a large amount of heat generated during welding, significantly reduces a heat input peak value, simultaneously greatly reduces the range of a heat affected zone, effectively inhibits axial wave deformation and roundness loss caused by thermal expansion and cold contraction, and avoids the generation of harmful oxide skins caused by high-temperature oxidation of the inner wall.

The utility model relates to the technical field of fixing clamps for automobile part machining, in particular to a simple electric control automatic rotating spot welding clamp which comprises a bottom plate, a protection assembly arranged on the bottom plate, a clamping assembly arranged on the protection assembly and an automatic propelling assembly matched with the clamping assembly. The clamping assembly comprises a first clamping station and a second clamping station, and the automatic pushing assembly can swing between the first clamping station and the second clamping station back and forth around the upper end of the supporting foot stand and is clamped when attached to the first clamping station or the second clamping station. The welding production efficiency is effectively improved through cooperation of the multiple air cylinders, circulation of procedures is avoided, the gear and rack rotation positioning precision is reliable, the time for primary debugging of production is shortened, the maintenance cost is reduced, and the occupied area of a welding tool is saved.

The invention discloses a contact tube of a double-protection welding gun. The contact tube is prepared by the following steps: step 1, selecting raw materials; step 2, raw material pretreatment; step 3, burdening and mixing; step 4, forming; step 5, roasting; step 6, graphitizing; step 7, manufacturing a blank; step 8, finish machining; the method has the advantages that graphite is adopted as a main material to manufacture the contact tube of the two-protection welding gun, and the graphite contact tube cannot be melted by high-temperature electric arcs generated by a welding wire and the inner wall of the contact tube in the welding production process due to the fact that the melting point of the graphite is about 3800 DEG C, so that adhesion of the welding wire and the contact tube is thoroughly avoided; due to the high melting point of graphite and the characteristic of surface pulverization at about 1000 DEG C, adhesion between the graphite and high-temperature metal splashes is reduced, a small amount of slag is easy to clean, the frequency and time for replacing and cleaning the contact tube in the welding production process of carbon dioxide arc welding are reduced, and the graphite is higher in high temperature resistance and wear resistance than red copper, and the service life of the contact tube is prolonged. The service life is prolonged; and the welding production efficiency is improved.

The present invention discloses a welding and forming clamping device for rotating inner and outer ring welds of a cylinder, which belongs to the field of welding equipment. The welding and forming clamping device of the present invention comprises a base, a lower clamping mechanism, an upper clamping mechanism, a lifting drive mechanism, a flipping drive mechanism, a flip seat, a rotating drive mechanism and a clamping and positioning mechanism. The present invention utilizes the clamping and positioning mechanism to support the thin-walled cylinder to avoid self-deformation of the cylinder; and cooperates with the upper and lower clamping mechanisms to clamp and fix each product to be welded, and utilizes the ring body to press the roller to ensure the positioning accuracy and clamping stability of the parts, which is beneficial to reduce the deformation of the ring seam welding; in addition, the upper and lower clamping mechanisms are utilized to drive the cylindrical parts to rotate and weld, and the flipping mechanism is utilized to drive the cylindrical parts to flip and weld, and the inner and outer welds at both ends of the cylindrical parts can be welded and formed at one time by clamping, thereby improving the welding production efficiency, and the welding accuracy is greatly improved, effectively reducing the welding defect rate, and improving the economic benefits of the enterprise.

The utility model belongs to the technical field of coal mine underground explosion-proof box production, and discloses a welding fixture for a coal mine underground explosion-proof box communication joint, which comprises a support frame, an electric control cabinet and a driving motor, the electric control cabinet and the driving motor are fixed on the support frame, the driving motor is electrically connected with the electric control cabinet, and the driving motor drives a rotating mechanism positioned on the support frame to rotate. An electromagnet is fixed to the top end of the rotating mechanism and electrically connected with the electric control cabinet. Due to the structure, the thickness consistency of surfacing welding of the same batch is improved, the production efficiency is improved, and the labor intensity of workers is reduced.

The invention provides an automatic calibration method for a laser welding track of a gapless welding seam, which is characterized in that a track calibration system is adopted; the automatic calibration method comprises the following steps of: 1, importing or generating a preset track; 2, automatic focusing is carried out, a welding head is controlled to move back and forth along a laser processing light path to carry out CCD image collection, the highest definition position of a full-width CCD image is recognized, and the position is set as a reference point; 3, adjusting the posture, and extracting and identifying the light spot form in the CCD image; when the light spot form is abnormal, the posture of the welding head is adjusted; fourthly, the welding track is optimized; and fifthly, welding track inspection is completed. According to the method, coaxial image monitoring is adopted, the problems that position errors are caused by a method of preposed structured light or a laser range finder, seamless welding seams, all-position fillet welding seams or small-diameter pipe butt joint are difficult to recognize, or the precision is reduced due to image splicing are solved, and the cost is obviously reduced compared with a structured light sensor.

The path acquisition method, system and device of the ship small assembly welding robot are provided, wherein the path acquisition method comprises the following steps: acquiring a welding instruction, the welding instruction comprising a motion instruction and a process instruction of the welding robot; acquiring a plurality of initial travel paths of the welding robot based on the motion instruction; screening the plurality of initial travel paths under a preset constraint condition to obtain a target travel path; debugging the welding robot in a virtual debugging environment based on the target travel path, moving the welding robot to a target position based on the target travel path, and performing welding work based on the process instruction. Through the path acquisition method provided by the present disclosure, the time required for robot debugging is greatly reduced, a large amount of manual cost is saved, and the efficiency of ship small assembly welding production is improved.

This invention relates to the field of battery technology, and in particular to a high-temperature resistant aluminum-plastic film encapsulation device, encapsulation method, and encapsulating aluminum-plastic film. The high-temperature resistant aluminum-plastic film encapsulation includes an ultrasonic welding machine; the ultrasonic welding machine includes interlocking welding heads arranged vertically; the welding heads include an upper welding head and a lower welding head correspondingly provided with multiple protrusions and multiple grooves. This invention uses an ultrasonic welding machine to encapsulate the high-temperature resistant aluminum-plastic packaging film. Compared to traditional heat-sealing processes, this method preheats the aluminum-plastic film at a low temperature, avoiding the high-temperature conduction phenomenon associated with heat sealing, and effectively preventing high-temperature damage to the battery cell material.

The invention belongs to the field of rotary friction welding, and discloses a method and a system for predicting rotary friction welding process parameters, and the method comprises the following steps: acquiring peak temperature and peak equivalent plastic strain of multiple groups of all grid points by utilizing a three-dimensional thermal coupling model about a first rotary friction welding head established by Abaqus software; processing is carried out through a BP neural network prediction model meeting the prediction precision, and the ultimate tensile strength corresponding to all grid points in multiple groups is obtained; screening the ultimate tensile strength to obtain the lowest ultimate tensile strength, and taking the lowest ultimate tensile strength as the ultimate tensile strength value of the welded joint under the group of parameters; and the maximum value of the ultimate tensile strength in the first rotary friction welding head is further screened out, and a set of rotary friction welding parameters corresponding to the maximum value serve as final rotary friction welding parameters. Aiming at the problem of welding size diversification, an optimal welding process parameter combination is quickly screened according to mechanical properties, and a guiding effect is provided for actual production of metal material transmission shaft rotary friction welding, so that the welding production efficiency is greatly improved.

The utility model relates to the technical field of thermal printing head manufacturing, in particular to a thermal printing head which is reasonable in structure, simple and convenient to disassemble and assemble, and capable of effectively improving the welding accuracy, reliability and production efficiency among product parts, and is characterized in that a green glaze layer of a PCB (Printed Circuit Board) is also provided with an enhanced protection layer with a welding positioning identification function; the reinforcing protection layer is arranged on one side of the bonding pad, is strip-shaped and is parallel to a heating resistor body on the heating substrate for the thermal printing head, so that the problems of welding deviation, welding dislocation and repeated alignment during welding of a flexible circuit board can be effectively solved, the welding production efficiency is greatly improved, the time cost is saved, and the production efficiency is improved. And meanwhile, the thickness of the reinforced protective layer is more than two times that of the green glaze layer below the reinforced protective layer, so that the green glaze layer can be prevented from being scratched by a tool when the flexible circuit board is replaced and the protective glue is removed, the bottom copper lead is prevented from being exposed, and the service life of the product is prolonged.