Steel pipe flange clamping and welding sliding table

Abstract

The invention provides a steel pipe flange clamping and welding sliding table which is characterized in that an assembling and welding sliding table is installed on a sliding table guide rail of a rack, and a stand column and a clamping table linear rail are arranged on an assembling and welding sliding table plate; a lead screw of the flange clamping device is supported at the two ends of a clamping table linear rail of the assembling and welding sliding table. A right-handed rotation nut of a positioning driving assembly and a left-handed rotation nut of a positioning driven assembly of the flange positioning device installed on the clamping table linear rail are screwed into the lead screw. A sliding beam cylinder of the flange clamping device is installed on a bidirectional sliding block provided with a clamping sliding beam in a sliding mode, and the clamping sliding block and a V-groove wheel are installed at the end of the clamping sliding beam provided with a clamping cylinder in a sliding mode and connected with the tail end of a clamping cylinder lever. A radial positioning assembly of the steel pipe positioning device is installed on an assembling and welding sliding table plate, and a positioning pipe pushing assembly is installed on a clamping table linear rail. The welding gun telescopic assembly is installed at the end of the inner welding sliding beam. The outer welding gun assembly is installed on the clamping sliding beam through an outer welding frame. The device is accurate and reliable in clamping and high in automation degree.

Description

Technical Field

[0001] The invention provides a steel pipe flange clamping and welding slide, belongs to the field of automatic welding equipment, and is mainly used for automatic clamping and welding of rotating workpieces. Background Art

[0002] Welding, an indispensable technical process in the manufacturing industry, plays a vital role in the manufacturing industry and constitutes an important part of the market. With the continuous development of industrialization, the competition in the welding market is becoming increasingly fierce, and various companies have emerged. The global welding market continues to show a steady growth momentum. The global welding market is growing steadily, but the distribution and welding level differences between regions cannot be ignored.

[0003] At present, some small and medium-sized machinery manufacturing enterprises still use manual welding, which not only has low welding efficiency, high labor intensity, poor working conditions, many safety hazards, but also makes it difficult to ensure welding quality. Especially for rotating workpieces, the positioning accuracy before welding is poor, the speed is slow, the clamping reliability is poor, and the uniformity of the weld is poor.

[0004] Looking at the current status of the automated welding equipment industry, there is an urgent need for a steel pipe flange clamping and welding slide with accurate and reliable positioning and clamping and a high degree of welding automation. Summary of the invention

[0005] The purpose of the present invention is to provide a steel pipe flange clamping and welding slide that can overcome the problems existing in the existing automated welding equipment industry, which not only has accurate and rapid positioning, convenient and reliable clamping, but also has a high degree of automation.

[0006] The technical scheme is as follows: it includes a welding slide, a flange clamping device, a steel pipe positioning device, an inner welding gun assembly and an outer welding gun assembly; the welding slide includes a welding slide plate, rollers, a welding table drive, a column, a clamping table linear rail, a column linear rail, a bidirectional slider and a double slide drive; one roller is installed on each of the four corners of the plate surface on one side of the welding slide plate; the axes of the two rollers at the two ends of the same side of the welding slide plate are coaxial, and the two rollers on the same axis are symmetrically arranged relative to the symmetry plane of the welding slide plate perpendicular to the plate surface direction; the symmetry plane, that is, the center of the two rollers on the same axis and the plane perpendicular to the plate surface of the welding slide plate is defined as the symmetry plane of the welding slide; the welding slide is supported on the slide rail arranged above the base frame of the frame through rollers, and is installed on the welding slide The welding table drive on one side of the welding slide plate is connected with the roller; a column extends upward from the upward plate surface of the welding slide plate, and clamping table linear rails are provided on the plane of the welding slide plate and the side facing the column of the welding slide, and the clamping table linear rail of the welding slide is parallel to the clamping table linear rail of the frame, and the column of the welding slide is provided with column linear rails on the plane facing the clamping table linear rail of the welding slide and on the side away from the clamping table linear rail; two bidirectional sliders equipped with double sliding drives are respectively mounted on the column linear rails of the column of the welding slide through the sliding grooves on one surface; the flange clamping device includes a flange positioning device and a flange clamping device, wherein the flange positioning device includes a lead screw, a lead screw drive, a positioning active component and a positioning driven component, and both ends of the lead screw are supported on the clamping table linear rails on the plane of the welding slide plate of the welding slide The two ends of the rail are arranged symmetrically with respect to the symmetrical plane of the welding slide, and one end of the screw is connected to the screw drive; the active positioning component includes an active box, a V-groove wheel, a right-handed nut, a positioning drive and a positioning transmission component. The active box with a 6-sided box structure has cut off two adjacent box panels, and the outer surface of the V-groove wheel is in a V-shaped groove shape. The two ends of the V-groove wheel are respectively supported on the plate surfaces adjacent to the active box and the two cut box panels; the active box is equipped with a right-handed nut on the outside of a box panel perpendicular to the axis of the V-groove wheel, and the active box is equipped with a positioning drive on the outside of a box panel equipped with the V-groove wheel, and the positioning drive is connected to the V-groove wheel through the positioning transmission component; the driven positioning component includes a driven box, a V-groove wheel and a left-handed nut. The shape of the driven box is symmetrical with the active box. The driven box is symmetrical with the two cut Another V-groove wheel is installed between two adjacent plate surfaces of a box body plate surface, and a left-handed nut is installed on the outer side of a box body plate surface perpendicular to the axis of the V-groove wheel; the right-handed nut of the positioning active component of the flange positioning device is screwed into the lead screws at both ends of the clamping table linear rail supported on the plane of the welding slide plate of the welding slide, and the box body plate surface of the positioning active component equipped with the right-handed nut is installed on the two clamping table linear rails; the left-handed nut of the positioning driven component of the flange positioning device is screwed into the lead screws at both ends of the clamping table linear rail supported on the plane of the welding slide, and the box body plate surface of the positioning driven component equipped with the left-handed nut is installed on the two clamping table linear rails equipped with the positioning active component; the positioning active component and the positioning driven component of the flange positioning device installed on the welding slide are symmetrically arranged relative to the symmetric surface of the welding slide;The flange clamping device includes a sliding beam cylinder, a clamping sliding beam, a clamping slider, a clamping cylinder and a V-groove wheel, wherein the sliding beam cylinder body is installed on a two-way slider on the column linear rail on the side of the welding slide plate that is clamped on the column mounted on the welding slide, and the clamping sliding beam is slidably mounted on the two-way slider of the welding slide equipped with the sliding beam cylinder; the end of the sliding beam cylinder rod is connected to the clamping sliding beam; the clamping slider is slidably mounted on the clamping sliding beam on the two-way slider of the welding slide and one end of the sliding beam cylinder rod is connected, the clamping cylinder is installed on one side of the clamping sliding beam end of the welding slide, the end of the clamping cylinder rod is connected to the clamping slider, and the V-groove wheel is installed on the clamping slider; the V-groove wheel installed on the welding slide is connected to the flange installed on the welding slide The axes of the two V-groove wheels of the positioning active component and the positioning driven component of the positioning device are parallel to each other and are located in the same plane perpendicular to the symmetry plane of the welding slide; the steel pipe positioning device includes a radial positioning component and a positioning push pipe component, wherein the radial positioning component includes a steel pipe positioning platform, a steel pipe positioning drive, a steel pipe positioning plate and a positioning roller, a table surface on one side of the steel pipe positioning platform is provided with a leg, the steel pipe positioning drive is installed on the plate surface on the side of the steel pipe positioning platform with the leg, and the cylinder rod of the steel pipe positioning drive passes through the plate surface of the steel pipe positioning platform and extends in the direction away from the leg of the steel pipe positioning platform; two positioning rollers with axes parallel to each other are installed on the outer side of the steel pipe positioning plate surface, and the steel pipe positioning plate passes through the center of the plate surface on the side away from the positioning roller. Installed at the end of the cylinder rod driven by the steel pipe positioning; the steel pipe positioning device is installed on the welding slide plate of the welding slide through the end of the support leg of the steel pipe positioning platform, and the two positioning rollers of the steel pipe positioning device are symmetrically arranged relative to the symmetric plane of the welding slide; the positioning tube pusher assembly includes a positioning tube pusher rack, a positioning tube pusher cylinder, a positioning pin, a tube pusher rod and a positioning tube pusher rack cylinder. The supporting plate at one end of the positioning tube pusher rack is equipped with a positioning tube pusher cylinder, and the cylinder rod end of the positioning tube pusher cylinder is equipped with a positioning pin and a tube pusher rod, and the axis of the positioning pin is parallel to the cylinder rod of the positioning tube pusher cylinder; the positioning tube pusher rack of the positioning tube pusher assembly is installed on the clamping table linear rail on the side of the welding slide plate of the welding slide facing the column direction of the welding slide, and the axis of the positioning pin is parallel to the cylinder rod of the positioning tube pusher cylinder The positioning push frame cylinder body is installed on the side of the welding slide plate facing the column direction of the welding slide, and the end of the positioning push frame cylinder rod is connected to the positioning push pipe rack; the inner welding gun assembly includes a welding gun telescopic assembly, an inner welding cylinder and an inner welding slide beam, wherein the welding gun telescopic assembly includes a telescopic slider, a telescopic frame, a welding cylinder, a horizontal adjustment assembly, a fine adjustment assembly and a welding wire clamp, wherein the telescopic slider is installed on the telescopic frame, and the telescopic slider is connected to the end of the cylinder rod of the welding cylinder installed on the outside of the telescopic frame; the horizontal adjustment assembly is installed on the telescopic slider, and the end of the fine adjustment assembly installed on the horizontal adjustment assembly is equipped with a welding wire clamp; The cylinder body of the inner welding cylinder is installed on a two-way slide block on the column linear rail which is clamped on the side of the column of the welding slide away from the welding slide plate, the inner welding slide beam is slidably mounted on the two-way slide block of the welding slide equipped with the inner welding cylinder, and the end of the inner welding cylinder rod is connected to the inner welding slide beam; the welding gun telescopic assembly is installed at one end connected to the inner welding slide beam and the end of the inner welding cylinder rod through a telescopic frame; the outer welding gun assembly includes a welding gun telescopic assembly and an outer welding frame, and the welding gun telescopic assembly of the outer welding gun assembly is installed on the outer welding frame through the telescopic frame; the outer welding gun assembly is installed on the plane of the clamping slide beam of the flange clamping device installed on the flange clamping device of the welding slide away from the column of the welding slide through the external welding frame.

[0007] Compared with the existing status in the art, the present invention has the advantages of high welding efficiency, good quality and high automation because the multi-gun steel pipe flange automatic welding machine is equipped with a program control system and each step and action is controlled by program. The flange positioning device of the flange clamping device is provided with a lead screw, and the positioning active component and the positioning driven component are respectively provided with a right-handed nut and a left-handed nut screwed with the same lead screw. Therefore, when the lead screw drives the lead screw to rotate, the right-handed nut and the left-handed nut are simultaneously driven to move toward or away from the longitudinal symmetry plane of the frame, that is, the positioning active component and the positioning driven component of the flange positioning device are driven to reciprocate along the axial direction of the lead screw, thereby ensuring that the workpiece is always "centered" relative to the longitudinal symmetry plane of the frame, which not only realizes the precision of the workpiece. The V-groove wheel of the flange clamping device has a V-groove outer surface, so it can adapt to the precise positioning of flanges of different thicknesses. The positioning tube pusher assembly of the steel pipe positioning device is slidably installed on the clamping table linear rail on the welding slide plate of the welding slide through the positioning tube pusher frame. Therefore, the distance between the positioning pin and the tube pusher rod of the positioning tube pusher assembly and the longitudinal symmetry plane of the frame is adjustable, so that it can not only implement precise positioning of the flange in the circumferential direction, but also adapt to the positioning requirements of the circle where the bolt holes of different diameters of the flange are located. Since the positioning tube pusher assembly of the steel pipe positioning device installed on the welding slide is provided with a tube pusher rod, the steel pipe can be pushed to move axially in the direction of the clamping table of the frame, so that the axial automatic movement of the steel pipe can be realized. Positioning; since the flange clamping device is installed on the bidirectional slider of the welding slide table through the clamping slide beam, the bidirectional slider and the flange clamping device installed on the bidirectional slider can be driven to move up and down along the column linear rail through the double slide drive, so it can adapt to the clamping requirements of flanges with different diameters; since the extension length of the steel pipe positioning drive cylinder rod of the radial positioning assembly of the steel pipe positioning device is adjustable, the height position of the positioning roller of the steel pipe positioning device can be adjusted, thereby ensuring the accurate position of the positioning roller relative to the outer circle of the steel pipe to be welded, and adapting to the positioning requirements of steel pipes with different diameters; since the welding slide table is equipped with slide table rollers and welding slide table drive, the welding slide table and the various devices installed on the welding slide table can be driven to reciprocate along the slide table guide rail arranged on the bottom frame of the frame, so as to achieve the desired positioning of the steel pipes of different diameters. It can not only adapt to the clamping requirements of steel pipes to be welded of different lengths, but also promote the axial movement of the steel pipes to be welded so as to realize accurate axial positioning of the steel pipes to be welded; since the inner welding slide beam of the inner welding gun assembly is installed on the clamping table linear rail arranged on the welding slide plate of the welding slide, the inner welding gun assembly is convenient to advance and retreat in the welding state and the non-welding state; since the relative position and angle between the welding gun telescopic assembly of the inner welding gun assembly and the outer welding gun assembly and the inner welding slide beam and the outer welding frame are adjustable, it is convenient to obtain the optimal position and angle of the welding wire clamp of the welding gun telescopic assembly relative to the weld to be welded; since the lateral position of the welding wire clamp of the welding gun telescopic assembly is adjustable and a fine-tuning assembly is provided, the accurate position of the welding wire clamp relative to the weld to be welded can be finely adjusted, thereby further ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is an axonometric view of an embodiment of the present invention when the flange clamping device is in a clamping state, the positioning push tube assembly of the steel pipe positioning device is in a positioning state, and the welding gun telescopic assemblies of the inner welding gun assembly and the outer welding gun assembly are in a welding state; Figure 2 The present invention Figure 1 An axonometric view of the embodiment in which the flange clamping device is in a non-clamping state, the positioning and pushing tube assembly of the steel pipe positioning device is in a retracted state, and the welding gun telescopic assemblies of the inner welding gun assembly and the outer welding gun assembly are in a retracted state; Figure 3 The present invention Figure 1 Axonometric view of the welding slide of the illustrated embodiment; Figure 4 The present invention Figure 1 An axonometric view of the flange clamping device of the illustrated embodiment; Figure 5 The present invention Figure 4 Axonometric view of the flange positioning device of the illustrated embodiment; Figure 6 The present invention Figure 5 An isometric view of the positioning active assembly of the illustrated embodiment; Figure 7 The present invention Figure 5 An isometric view of the illustrated embodiment positioning the driven assembly; Figure 8 The present invention Figure 4 An axonometric view of the flange clamping device of the illustrated embodiment; Fig. 9 The present invention Figure 1 Axonometric view of the steel pipe positioning device of the illustrated embodiment; Fig.10 The present invention Fig. 9 An axonometric view of the radial positioning assembly of the illustrated embodiment; Fig.11 The present invention Fig. 9 An isometric view of the illustrated embodiment positioning the push tube assembly; Fig.12 The present invention Figure 1 an isometric view of the welding gun assembly in the illustrated embodiment; Fig.13 The present invention Fig.12 An axonometric view of the welding gun telescoping assembly of the illustrated embodiment; Fig.14 The present invention Figure 1 An isometric view of an alternative welding gun assembly according to the illustrated embodiment. DETAILED DESCRIPTION

[0009] 2. Welding slide 21, welding slide plate 22, roller 23, welding stage drive 3, flange clamping device 31, flange positioning device 311, lead screw 312, lead screw drive 313, positioning active component 3131, active box 3132, V-groove wheel 3133, right-hand screw nut 3134, positioning drive 3135, positioning transmission component 314, positioning driven component 3141, driven box 3142, left-hand screw nut 32, flange clamping device 321, slide beam cylinder 322, clamping slide beam 323, clamping slide block 324, clamping cylinder 4, steel pipe fixed Positioning device 41, radial positioning assembly 411, steel pipe positioning platform 412, steel pipe positioning drive 413, steel pipe positioning plate 414, positioning roller 42, positioning pipe push assembly 421, positioning pipe push frame 422, positioning pipe push cylinder 423, positioning pin 424, pipe push rod 425, positioning push frame cylinder 5, inner welding gun assembly 51, welding gun telescopic assembly 511, telescopic slide block 512, telescopic frame 513, welding cylinder 514, horizontal adjustment assembly 515, fine adjustment assembly 516, welding wire clamp 52, inner welding cylinder 53, inner welding slide beam 6, outer welding gun assembly 61, outer welding frame.

[0010] exist Figure 1-Figure 14In the shown embodiment: a roller 22 is installed on each of the four corners of the plate surface of one side of the welding slide plate 21 of the welding slide 2, the axes of the two rollers 22 located at the two ends of the same side of the welding slide plate 21 are coaxial, and the two rollers 22 located on the same axis are symmetrically arranged relative to the symmetry plane of the welding slide plate 21 perpendicular to the plate surface direction, and the symmetry plane, that is, the center of the two rollers 22 located on the same axis and the plane perpendicular to the plate surface of the welding slide plate 21 is defined as the symmetry plane of the welding slide 2; the welding slide 2 is supported on the slide guide rail arranged above the base frame of the frame through the roller 22, so the symmetry plane of the welding slide 2 coincides with the longitudinal symmetry plane of the frame, and the welding table drive 23 installed on one side of the welding slide plate 21 is connected to the roller 22. A column 12 extends upward from the upward plate surface of the welding slide plate 21, and clamping table linear rails 16 are provided on the plane on the welding slide plate 21 and the side facing the column 12 of the welding slide 2, and the clamping table linear rails 16 of the welding slide 2 are parallel to the clamping table linear rails 16 of the frame, and column linear rails 17 are provided on the plane of the column 12 of the welding slide 2 facing the clamping table linear rail 16 of the welding slide 2 and away from the clamping table linear rail 16; two bidirectional sliding blocks 18 of the welding slide 2 equipped with double sliding drives 19 are respectively mounted on the column linear rails 17 of the column 12 of the welding slide 2 through a slide groove on one surface, so that the two double sliding drives 19 can respectively drive the two bidirectional sliding blocks 18 to slide up and down. The two ends of the lead screw 311 of the flange positioning device 31 of the flange clamping device 3 are supported on the two ends of the clamping table linear rail 16 on the plane of the welding slide plate 21 of the welding slide 2, and the lead screw 311 is symmetrically arranged relative to the symmetric plane of the welding slide 2, and one end of the lead screw 311 is connected to the lead screw drive 312. The active box 3131 of the positioning active component 313 is a 6-sided box structure, the active box 3131 cuts off two adjacent box panels, the outer circumferential surface of the V-groove wheel 3132 is in the shape of a V-groove, and the two ends of the V-groove wheel 3132 are respectively supported on the board surface of the active box 3131 adjacent to the two cut box panels; the active box 3131 is equipped with a right-handed nut 3133 on the outer side of a box panel perpendicular to the axis of the V-groove wheel 3132, and the active box 3131 is equipped with 1 of the V-groove wheel 3132. A positioning drive 3134 is installed on the outer side of each box panel, and the positioning drive 3134 is connected to the V-groove wheel 3132 through a positioning transmission assembly 3135; the shape of the driven box 3141 of the positioning driven assembly 314 is symmetrical with the active box 3131, and another V-groove wheel 3132 is installed between the driven box 3141 and the two adjacent box panels that have been cut off, and a left-handed nut 3142 is installed on the outer side of a box panel that is perpendicular to the axis of the driven box 3141 and the V-groove wheel 3132.The right-handed nut 3133 of the positioning active component 313 of the flange positioning device 31 is screwed into the screw 311 at both ends of the clamping table linear rail 16 supported on the plane of the welding slide plate 21 of the welding slide 2, and the box panel of the positioning active component 313 equipped with the right-handed nut 3133 is installed on the two-piece clamping table linear rail 16; the left-handed nut 3142 of the positioning driven component 314 of the flange positioning device 31 is screwed into the screw 311 at both ends of the clamping table linear rail 16 supported on the plane of the welding slide 2, and the box panel of the positioning driven component 314 equipped with the left-handed nut 3142 is installed on the two-piece clamping table linear rail 16 equipped with the positioning active component 313; the positioning active component 313 and the positioning driven component 314 of the flange positioning device 31 installed on the welding slide 2 are symmetrically arranged relative to the symmetrical plane of the welding slide 2. When the lead screw 311 rotates, it can simultaneously drive the right-hand screw nut 3133 and the left-hand screw nut 3142 to move toward or away from the longitudinal symmetric plane of the frame, that is, drive the positioning active component 313 and the positioning driven component 314 of the flange positioning device 31 to reciprocate along the axial direction of the lead screw 311, so that the two V-groove wheels 3132 respectively installed on the positioning active component 313 and the positioning driven component 314 have a "centering" function relative to the longitudinal symmetric plane of the frame. The cylinder body of the slide beam cylinder 321 of the flange clamping device 32 is installed on the bidirectional slider 18 on the column linear rail 17 on the side of the welding slide plate 21 that is clamped on the column 12 of the welding slide 2, and the clamping slide beam 322 is slidably mounted on the bidirectional slider 18 of the welding slide 2 equipped with the slide beam cylinder 321; the end of the cylinder rod of the slide beam cylinder 321 is connected to the clamping slide beam 322, so that the extension and contraction of the cylinder rod of the slide beam cylinder 321 can drive the clamping slide beam 322 to move horizontally. The clamping slider 323 is slidably installed on the clamping slide beam 322 on the bidirectional slider 18 slidably mounted on the welding slide 2 and one end of the clamping slide beam 322 is connected to the end of the cylinder rod of the slide beam cylinder 321, the clamping cylinder 324 is installed on one side of the end of the clamping slide beam 322 of the welding slide 2, the cylinder rod end of the clamping cylinder 324 is connected to the clamping slider 323, and the V-groove wheel 3132 is installed on the two clamping sliders 323; the V-groove wheel 3132 of the flange clamping device 32 installed on the welding slide 2 and the two V-groove wheels 3132 of the positioning active component 313 and the positioning driven component 314 of the flange positioning device 31 installed on the welding slide 2 are parallel to each other, and the three V-groove wheels 3132 are located in the same plane perpendicular to the symmetry plane of the welding slide 2; in the clamping workpiece state, the V-groove wheel 3132 of the flange clamping device 32 installed on the welding slide 2 coincides with the symmetry plane of the welding slide 2.A support leg is provided on one side of the steel pipe positioning platform 411 of the radial positioning component 41 of the steel pipe positioning device 4, and a steel pipe positioning drive 412 is installed on a side plate surface of the steel pipe positioning platform 411 on which the support leg is provided. The cylinder rod of the steel pipe positioning drive 412 passes through the plate surface of the steel pipe positioning platform 411 and extends in a direction away from the support leg of the steel pipe positioning platform 411; two positioning rollers 414 with axes parallel to each other are installed on the outer side of the plate surface of the steel pipe positioning plate 413, and the steel pipe positioning plate 413 is installed on the end of the cylinder rod of the steel pipe positioning drive 412 through the center of the side plate surface away from the positioning roller 414; the steel pipe positioning device 4 is installed on the welding slide plate 21 of the welding slide 2 through the end of the support leg of the steel pipe positioning platform 411, and the two positioning rollers 414 of the steel pipe positioning device 4 are symmetrically arranged relative to the symmetric plane of the welding slide 2. A positioning tube pushing cylinder 422 is installed on the supporting plate at one end of the positioning tube pushing frame 421 of the positioning tube pushing assembly 42, and a positioning pin 423 and a tube pushing rod 424 are installed at the end of the cylinder rod of the positioning tube pushing cylinder 422, and the axis of the positioning pin 423 is parallel to the cylinder rod of the positioning tube pushing cylinder 422; the positioning tube pushing frame 421 of the positioning tube pushing assembly 42 is installed on the clamping table linear rail 16 on the side of the welding slide plate 21 of the welding slide 2 facing the column 12 of the welding slide 2, and the axis of the positioning pin 423 is parallel to the symmetry plane of the welding slide 2 and the plate surface of the welding slide plate 21, and the end of the positioning pin 423 points to the direction of the column 12 away from the welding slide 2; the cylinder body of the positioning push frame cylinder 425 is installed on the side of the welding slide plate 21 of the welding slide 2 facing the column 12 of the welding slide 2, and the end of the cylinder rod of the positioning push frame cylinder 425 is connected to the positioning tube pushing frame 421. The telescopic slider 511 of the welding gun telescopic assembly 51 of the inner welding gun assembly 5 is installed on the telescopic frame 512, and the telescopic slider 511 is connected to the cylinder rod end of the welding cylinder 513 installed on the outer side of the telescopic frame 512; the horizontal adjustment assembly 514 is installed on the telescopic slider 511, and the end of the fine adjustment assembly 515 installed on the horizontal adjustment assembly 514 is equipped with a welding wire clamp 516. The cylinder body of the inner welding cylinder 52 is installed on the bidirectional slider 18 on the column linear rail 17 on the side of the column 12 of the welding slide 2 away from the welding slide plate 21, and the inner welding slide beam 53 is slidably mounted on the bidirectional slider 18 of the welding slide 2 equipped with the inner welding cylinder 52; the end of the cylinder rod of the inner welding cylinder 52 is connected to the inner welding slide beam 53, so that the extension and contraction of the cylinder rod of the inner welding cylinder 52 can drive the inner welding slide beam 53 to move horizontally; the welding gun telescopic assembly 51 is installed at one end of the inner welding slide beam 53 connected to the cylinder rod end of the inner welding cylinder 52 through the telescopic frame 512. The welding gun telescopic assembly 51 of the external welding gun assembly 6 is installed on the external welding frame 61 through the telescopic frame 512; the external welding gun assembly 6 is installed through the external welding frame 61 on the plane of the clamping slide beam 322 of the flange clamping device 32 of the flange clamping device 3 installed on the welding slide 2 away from the column 12 of the welding slide 2, so the external welding gun assembly 6 can slide horizontally following the clamping slide beam 322.

[0011] Its working principle is: turn on the power, start the screw drive of the flange positioning device of the flange clamping device of the multi-gun steel pipe flange automatic welding machine according to the diameter of the flange to be welded, and drive the right-hand screw nut and the left-hand screw nut to move towards or away from the symmetric surface of the clamping slide table through the rotation of the screw, that is, drive the positioning active component and the positioning driven component of the flange positioning device to move back and forth along the axial direction of the screw, so as to always ensure that the flange to be welded is "centered" relative to the longitudinal symmetric surface of the frame during the adjustment process, thereby ensuring the positioning accuracy of the flange and adapting to the positioning requirements of flanges of different diameters. Since the outer surface of the V-groove wheel is in the shape of a V-groove, it can adapt to the positioning requirements of flanges of different thicknesses to be welded.

[0012] The welding platform drive installed on the welding slide is started according to the length of the steel pipe to be welded, and the welding slide is driven to move along the slide rail set on the bottom frame of the frame to meet the clamping requirements of steel pipes of different lengths. According to the diameter of the flange to be welded, the distance between the positioning push tube frame of the positioning push tube assembly of the steel pipe positioning device and the symmetric surface of the clamping slide is adjusted to ensure that the positioning pin of the positioning push tube assembly can smoothly pass through the bolt hole on the flange to be welded, and the end of the push tube rod of the positioning push tube assembly is just aligned with the end face of the steel pipe.

[0013] According to the diameter of the flange to be welded, the double sliding drive of the bidirectional slider mounted on the column of the welding slide toward the column linear track of the welding slide is started, and the bidirectional slider and the flange clamping device and the external welding gun assembly mounted on the bidirectional slider are driven to move up and down along the column linear track on the column to meet the clamping requirements of flanges of different diameters to be welded and the welding requirements of flanges and steel pipes of different diameters to be welded. According to the diameter of the steel pipe to be welded, the extension length of the steel pipe positioning drive cylinder rod of the radial positioning assembly of the steel pipe positioning device is adjusted to ensure the accurate position of the positioning roller of the steel pipe positioning device relative to the outer circle of the steel pipe to be welded. Start the double sliding drive of the two-way slider installed on the column linear rail of the welding slide away from the direction of the welding slide, and drive the two-way slider and the inner welding gun assembly installed on the two-way slider to move up and down along the column linear rail on the column to adapt to the welding requirements of flanges and steel pipes to be welded with different diameters; adjust the relative position and angle between the welding gun telescopic assembly of each inner welding gun assembly and the inner welding slide beam and the outer welding frame to obtain the optimal position and angle of the welding wire clamp of the welding gun telescopic assembly relative to the weld to be welded; start the lateral adjustment drive of the welding gun telescopic assembly to adjust the lateral position of the welding wire clamp; finely adjust the welding wire clamp through the fine-tuning assembly to obtain the accurate position of the welding wire clamp relative to the weld to be welded.

[0014] Start the control program of the multi-gun steel pipe flange automatic welding machine, the welding table drive of the welding slide of the multi-gun steel pipe flange automatic welding machine starts, and drives the welding slide and the various devices and components installed on the welding slide to retreat to the farthest distance from the frame. The cylinder rod of the positioning push frame cylinder of the positioning push tube assembly of the steel pipe positioning device retracts, and drives the positioning push tube assembly to retreat to one side of the equipment; the cylinder rod of the positioning push tube cylinder of the positioning push tube assembly retracts, and drives the positioning pin and the push tube rod to retreat to a non-positioning state. The cylinder rod of the sliding beam cylinder of the flange clamping device of the flange clamping device retracts, and drives the clamping slide, clamping cylinder, V-groove wheel and external welding gun assembly to retreat to one side of the equipment through the clamping slide beam; the cylinder rod of the clamping cylinder of the flange clamping device retracts, and drives the V-groove wheel to retreat to a state where the flange to be welded is released through the clamping slide. The cylinder rod of the inner welding cylinder of the inner welding gun assembly retracts, and drives the welding gun telescopic assembly to return to one side of the equipment through the inner welding slide beam; the cylinder rods of the welding cylinders of the inner welding gun assembly and the welding gun telescopic assembly of the outer welding gun assembly retract, and drive the welding wire clamp to return to the non-welding state through the telescopic slide block.

[0015] After the flange to be welded is accurately positioned, the cylinder rod of the clamping cylinder of the flange clamping device of the flange clamping device extends out, and drives the V-groove wheel to move downward through the clamping slider, thereby clamping the flange to be welded. At the same time, the cylinder rods of the positioning pusher cylinder and the positioning pusher cylinder of the positioning pusher assembly of the steel pipe positioning device extend out, and while driving the positioning pusher assembly to move toward the symmetrical surface of the clamping slide, the positioning pin is driven to extend and inserted into the bolt hole of the flange to be welded, and the pusher rod is aligned with the end face of the steel pipe to be welded. The welding table drive of the welding slide is started in reverse, and drives the welding slide and the positioning pin and pusher rod of the positioning pusher assembly of the steel pipe positioning device installed on the welding slide to move toward the clamping table of the frame, and the pusher rod of the positioning pusher assembly pushes the steel pipe to be welded to move together toward the clamping table of the frame; when the other end of the steel pipe to be welded contacts the pusher rod of the positioning pusher assembly of the steel pipe positioning device installed on the clamping table of the frame, the axial positioning of the steel pipe to be welded is completed and stops moving.

[0016] The cylinder rod of the welding cylinder of the welding gun telescopic assembly of the inner welding gun assembly and the outer welding gun assembly extends, and drives the welding wire clamp to extend through the telescopic slider. When the welding wire held by the welding wire clamp touches the workpiece to be welded, it "ignites" and spot welds the two flanges of the workpiece to be welded with the steel pipe. The cylinder rod of the welding cylinder quickly retracts and "extinguishes the fire". At the same time, the cylinder rod of the positioning tube push cylinder of the steel pipe positioning device retracts again, and drives the positioning pin and the tube push rod to return to the non-positioning state. The positioning drive of the positioning active component of the flange positioning device installed on the welding slide plate of the welding slide is started, and drives the V-groove wheel of the positioning active component through the positioning transmission component, and then drives the flange of the workpiece to be welded together with the steel pipe to rotate "360° / set number of spot weldings". The cylinder rod of the welding cylinder of the welding gun telescopic assembly extends again, and drives the welding wire clamp to extend to the welding state through the telescopic slider to spot weld again, until the set number of spot weldings is reached and the continuous welding operation begins. At the same time, the positioning drive is started again, and the flange and steel pipe of the workpiece to be welded are driven to rotate 360° at a constant speed through the V-groove wheel and then stop, completing the welding operation of the workpiece. The cylinder rod of the welding cylinder of the welding gun telescopic assembly of the inner welding gun assembly and the outer welding gun assembly is retracted again, and the welding wire clamp is driven to return to the non-welding state through the telescopic slider; the cylinder rod of the clamping cylinder of the flange clamping device is retracted again, and the V-groove wheel is driven to return to the workpiece release state through the clamping slider.

[0017] Then, after repeating the loading, positioning and clamping of the flange and the steel pipe of the workpiece to be welded, the welding operation is carried out again, and so on.

Claims

1. A steel pipe flange clamping and welding slide, comprising a welding slide (2), a flange clamping device (3), a steel pipe positioning device (4), an inner welding gun assembly (5) and an outer welding gun assembly (6), characterized in that: The welding slide (2) comprises a welding slide plate (21), rollers (22), a welding drive (23), a column (12), a clamping platform linear rail (16), a column linear rail (17), a bidirectional slider (18) and a bidirectional slider drive (19), wherein one roller (22) is installed at each of the four corners of a plate surface on one side of the welding slide plate (21), the axes of the two rollers (22) located at the two ends of the same side of the welding slide plate (21) are coaxial, and the two rollers (22) located on the same axis are symmetrically arranged relative to a symmetry plane perpendicular to the plate surface direction of the welding slide plate (21), and the symmetry plane, i.e., the center of the two rollers (22) located on the same axis and the welding slide plate (21) are defined. The plane perpendicular to the plate surface of the slide plate (21) is the symmetric plane of the welding slide (2); the welding slide (2) is supported on a slide rail arranged above the bottom frame of the frame through a roller (22); a welding drive (23) installed on one side of the welding slide plate (21) is connected to the roller (22); a column (12) extends upward from the plate surface of the welding slide plate (21) facing upward; a clamping linear rail (16) is provided on the upper plane of the welding slide plate (21) and the side facing the column (12) of the welding slide (2); the clamping linear rail (16) of the welding slide (2) is parallel to the clamping linear rail (16) of the frame; the column (12) of the welding slide (2) faces the welding slide (2) ) and on a plane away from the clamping platform linear rail (16); two bidirectional sliders (18) equipped with double slide drives (19) are respectively clamped on the column linear rail (17) of the column (12) of the welding slide (2) through a slide groove on one surface; the flange clamping device (3) includes a flange positioning device (31) and a flange clamping device (32), wherein the flange positioning device (31) includes a lead screw (311), a lead screw drive (312), a positioning active component (313) and a positioning driven component (314), and both ends of the lead screw (311) are supported on the welding slide plate (21) of the welding slide (2) The two ends of the clamping table linear rail (16) are arranged symmetrically with respect to the symmetrical surface of the welding slide table (2), and the lead screw (311) is arranged symmetrically with respect to the symmetrical surface of the welding slide table (2), and one end of the lead screw (311) is connected to the lead screw drive (312); the positioning active component (313) includes an active box (3131), a V-groove wheel (3132), a right-handed screw nut (3133), a positioning drive (3134) and a positioning transmission component (3135), the active box (3131) having a 6-sided box structure has two adjacent box plate surfaces cut off, the outer circumferential surface of the V-groove wheel (3132) is in the shape of a V-groove, and the two ends of the V-groove wheel (3132) are respectively supported on the plate surfaces of the active box (3131) adjacent to the two cut box plate surfaces;A right-handed nut (3133) is installed on the outer side of a box panel perpendicular to the axis of the V-groove wheel (3132) of the active box (3131); a positioning drive (3134) is installed on the outer side of a box panel on which the V-groove wheel (3132) is installed of the active box (3131); and the positioning drive (3134) is connected to the V-groove wheel (3132) through a positioning transmission assembly (3135); the positioning driven assembly (314) comprises a driven box (3141), a V-groove wheel (3132) and a left-handed nut (3142); the shape of the driven box (3141) is symmetrical with that of the active box (3131); another V-groove wheel (3142) is installed between the driven box (3141) and two adjacent box panels that are cut off 132), a left-handed nut (3142) is installed on the outer side of a box body panel perpendicular to the axis of the V-groove wheel (3132) of the driven box (3141); the right-handed nut (3133) of the positioning active component (313) of the flange positioning device (31) is screwed into the lead screw (311) at both ends of the clamping table linear rail (16) supported on the upper plane of the welding slide plate (21) of the welding slide (2), and the box body panel of the positioning active component (313) equipped with the right-handed nut (3133) is installed on the two clamping table linear rails (16); the left-handed nut (3142) of the positioning driven component (314) of the flange positioning device (31) is screwed into the screws at both ends of the clamping table linear rail (16) supported on the upper plane of the welding slide (2). The box body of the positioning driven component (314) equipped with a left-handed nut (3142) is installed on the two clamping platform linear rails (16) equipped with the positioning active component (313); the positioning active component (313) and the positioning driven component (314) of the flange positioning device (31) installed on the welding slide (2) are symmetrically arranged relative to the symmetrical surface of the welding slide (2); the flange clamping device (32) includes a slide beam cylinder (321), a clamping slide beam (322), a clamping slide block (323), a clamping cylinder (324) and a V-groove wheel (3132), wherein the cylinder body of the slide beam cylinder (321) is installed on the column (12) clamped on the welding slide (2) toward the side of the welding slide plate (21). On the bidirectional slider (18) on the column linear rail (17), the clamping slide beam (322) is slidably mounted on the bidirectional slider (18) of the welding slide table (2) equipped with the slide beam cylinder (321); the end of the cylinder rod of the slide beam cylinder (321) is connected to the clamping slide beam (322); the clamping slide block (323) is slidably mounted on the end of the clamping slide beam (322) on the bidirectional slider (18) slidably mounted on the welding slide table (2) and connected to the end of the cylinder rod of the slide beam cylinder (321); the clamping cylinder (324) is mounted on one side of the end of the clamping slide beam (322) of the welding slide table (2); the end of the cylinder rod of the clamping cylinder (324) is connected to the clamping slide block (323); and the V-groove wheel (3132) is mounted on the clamping slide block (323);The axes of the V-groove wheel (3132) of the flange clamping device (32) installed on the welding slide (2) and the two V-groove wheels (3132) of the positioning active component (313) and the positioning driven component (314) of the flange positioning device (31) installed on the welding slide (2) are parallel to each other, and the three V-groove wheels (3132) are located in the same plane perpendicular to the symmetry plane of the welding slide (2); the steel pipe positioning device (4) comprises a radial positioning component (41) and a positioning push pipe component (42), wherein the radial positioning component (41) comprises a steel pipe positioning platform (411), a steel pipe positioning drive (412), a steel pipe positioning plate (413) and a positioning roller (414) ), a support leg is provided on one side of the steel pipe positioning platform (411), a steel pipe positioning drive (412) is installed on the side plate surface of the steel pipe positioning platform (411) provided with the support leg, and an output shaft of the steel pipe positioning drive (412) passes through the plate surface of the steel pipe positioning platform (411) and extends in a direction away from the support leg of the steel pipe positioning platform (411); two positioning rollers (414) whose axes are parallel to each other are installed on the outer side of the plate surface of the steel pipe positioning plate (413), and the steel pipe positioning plate (413) is installed at the end of the output shaft of the steel pipe positioning drive (412) through the center of the side plate surface away from the positioning roller (414); the steel pipe positioning device (4) is installed on the end of the support leg of the steel pipe positioning platform (411) through the end of the support leg of the steel pipe positioning platform (411). The two positioning rollers (414) of the steel pipe positioning device (4) are arranged symmetrically on the welding slide plate (21) of the welding slide (2) relative to the symmetric plane of the welding slide (2); the positioning tube push assembly (42) comprises a positioning tube push frame (421), a positioning tube push cylinder (422), a positioning pin (423), a tube push rod (424) and a positioning tube push frame cylinder (425); the positioning tube push cylinder (422) is installed on the support plate at one end of the positioning tube push frame (421); the cylinder rod end of the positioning tube push cylinder (422) is installed with a positioning pin (423) and a tube push rod (424); and the axis of the positioning pin (423) is parallel to the cylinder rod of the positioning tube push cylinder (422); the positioning tube push assembly (4 2) is installed on a clamping platform linear rail (16) arranged on the side of the welding slide plate (21) of the welding slide (2) facing the column (12) of the welding slide (2), the axis of the positioning pin (423) is parallel to the symmetry plane of the welding slide (2) and the plate surface of the welding slide plate (21), and the end of the positioning pin (423) points to the direction away from the column (12) of the welding slide (2); the cylinder body of the positioning push frame cylinder (425) is installed on the side of the welding slide plate (21) of the welding slide (2) facing the column (12) of the welding slide (2), and the end of the cylinder rod of the positioning push frame cylinder (425) is connected to the positioning push frame (421);The inner welding gun assembly (5) comprises a welding gun telescopic assembly (51), an inner welding cylinder (52) and an inner welding slide beam (53), wherein the welding gun telescopic assembly (51) comprises a telescopic slider (511), a telescopic frame (512), a welding cylinder (513), a horizontal adjustment assembly (514), a fine adjustment assembly (515) and a welding wire clamp (516), wherein the telescopic slider (511) is mounted on the telescopic frame (512), and the telescopic slider (511) is connected to the cylinder rod end of the welding cylinder (513) mounted on the outer side of the telescopic frame (512); the horizontal adjustment assembly (514) is mounted on the telescopic slider (511), and the end of the fine adjustment assembly (515) mounted on the horizontal adjustment assembly (514) is equipped with a welding wire clamp (516); the cylinder body of the inner welding cylinder (52) is mounted on a column linear rail (11) on the side of a column (12) mounted on a welding slide (2) away from a welding slide plate (21). 7), the inner welding slide beam (53) is slidably mounted on the two-way slide block (18) of the welding slide table (2) equipped with the inner welding cylinder (52); the end of the cylinder rod of the inner welding cylinder (52) is connected to the inner welding slide beam (53); the welding gun telescopic assembly (51) is mounted on one end of the inner welding slide beam (53) and the end of the cylinder rod of the inner welding cylinder (52) through a telescopic frame (512); the outer welding gun assembly (6) comprises a welding gun telescopic assembly (51) and an outer welding frame (61), the welding gun telescopic assembly (51) of the outer welding gun assembly (6) is mounted on the outer welding frame (61) through the telescopic frame (512); the outer welding gun assembly (6) is mounted on the plane of the clamping slide beam (322) of the flange clamping device (32) of the flange clamping device (3) installed on the welding slide table (2) away from the column (12) of the welding slide table (2) through the outer welding frame (61). ;

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