Circular seam stainless steel pipe welding device convenient to position

Abstract

The utility model discloses a circular seam stainless steel pipe welding device convenient to position, which belongs to the field of industrial manufacturing and comprises a base station, a belt conveyor is fixedly mounted at the upper end of the base station, and the belt conveyor is used for conveying a stainless steel pipe to a welding position and conveying a finished product away from the welding position after welding is completed; a stainless steel pipe and pipe cover feeding and positioning mechanism is installed at the upper end of the base table and used for positioning feeding before stainless steel pipes and pipe covers are welded. A welding rotating mechanism for rotating the stainless steel pipe and the stainless steel pipe cover during welding is mounted at the upper end of the base station; and a welding mechanism for welding the stainless steel pipe and the stainless steel pipe cover is mounted on the welding rotating mechanism. By means of the mode, the pipe caps on the two sides of the stainless steel pipe needing to be welded with the pipe caps at the same time can be welded at the same time, continuous welding can be achieved only by manually placing the stainless steel pipe and the pipe caps on the conveying line and the inclined plate one by one in the welding process, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of industrial manufacturing, concretely relates to a ring slit stainless steel pipe welding device convenient to position. BACKGROUND

[0002] At present, the stainless steel ring slit welding device develops rapidly in the field of industrial manufacturing, has been widely used in automobile manufacturing, aerospace, chemical industry, food processing and many other fields, meets the high quality welding demand of various stainless steel pipelines, containers, parts and the like, with the continuous progress of science and technology and the continuous growth of demand, the stainless steel ring slit welding device will continue to develop and play a more important role in the field of industrial manufacturing.

[0003] Chinese patent CN217832535U discloses a steel pipe ring slit welding device, including a workbench, the bottom of the workbench is provided with a supporting leg, the workbench is provided with a supporting frame, the supporting frame is provided with a up-and-down moving holding cover, the holding cover is n-shaped structure, the holding cover is provided with a detachable connecting seat, the connecting seat is provided with a holding wheel, the holding cover and the supporting frame are provided with a driving mechanism, the driving mechanism controls the up-and-down movement of the holding cover so that the holding wheel contacts the outer side of the steel pipe, the workbench is provided with a telescopic matching seat, compared with the prior art, the advantages are that the steel pipe cover is arranged in the interior through the up-and-down moving holding cover, the holding wheel, the transmission roller and the driven roller are triangularly distributed, the outer side of the steel pipe is held, different sizes of steel pipes can be processed, and the piston rod and the buffer spring are matched to avoid excessive clamping of the steel pipe.

[0004] 1. For the stainless steel pipe that needs to weld the cover body on both sides at the same time, simultaneous welding cannot be carried out.

[0005] 2. Artificial feeding is needed during the welding process, and artificial unloading is needed after the welding is completed, so the production efficiency is low.

[0006] Therefore, the utility model designs a ring slit stainless steel pipe welding device convenient to position to solve the above problems. UTILITY MODEL CONTENTS

[0007] In view of the above shortcomings of the prior art, the utility model provides a ring slit stainless steel pipe welding device convenient to position.

[0008] To achieve the above purpose, the utility model realizes by the following technical scheme:

[0009] A ring slit stainless steel pipe welding device convenient to position, including a base, further including a belt conveyor, a stainless steel pipe and a pipe cover feeding and positioning mechanism, a welding rotating mechanism and a welding mechanism.

[0010] The upper end of the base is fixedly provided with a belt conveyor, which is used for conveying the stainless steel pipe to the welding position and conveying the finished product away from the welding position after welding is completed.

[0011] The upper end of the base is provided with a stainless steel pipe and pipe cover loading positioning mechanism, which is used for positioning the loading of the stainless steel pipe and pipe cover before welding.

[0012] The stainless steel pipe and pipe cover loading positioning mechanism comprises a stainless steel pipe loading positioning assembly and a pipe cover loading positioning assembly, the stainless steel pipe loading positioning assembly is connected with the upper and lower ends of the belt conveyor, the two groups of pipe cover loading positioning assemblies are symmetrically arranged on the left and right sides of the belt conveyor, and the lower end of the pipe cover loading positioning assembly is connected with the base; the stainless steel pipe loading positioning assembly is used for positioning the loading of the stainless steel pipe before welding, and the pipe cover loading positioning assembly is used for positioning the loading of the stainless steel pipe cover before welding.

[0013] The upper end of the base is provided with a welding rotating mechanism for rotating the stainless steel pipe and the stainless steel pipe cover during welding.

[0014] The welding rotating mechanism is provided with a welding mechanism for welding the stainless steel pipe and the stainless steel pipe cover.

[0015] Further, the pipe cover loading positioning assembly comprises an inclined plate and a positioning plate; the lower end of the inclined plate is fixedly connected with the base, the inclined plate is a straight plate with the back side being higher than the front side, and a baffle is fixedly installed at the front end of the inclined plate; after the stainless steel pipe cover is placed at the back side of the inclined plate, the stainless steel pipe cover rolls to the front side of the baffle; side plates are fixedly installed on the left and right sides of the inclined plate to limit the stainless steel pipe cover; an avoiding hole is formed at the front end of the side plate on the side of the inclined plate away from the belt conveyor; a positioning plate is fixedly installed on the upper end of the belt conveyor close to the inclined plate; a tapered positioning hole is formed in the positioning plate to position the stainless steel pipe cover when it is sent to the processing station; and the opening on the side of the tapered positioning hole close to the belt conveyor is smaller than the other side of the tapered positioning hole.

[0016] Further, the stainless steel pipe loading positioning assembly comprises a material supporting assembly, a positioning block and a cylinder one; a plurality of material supporting assemblies are uniformly distributed on the outer side wall of the belt conveyor; the lower end of the side of each cylinder one close to each other is fixedly installed with a positioning block; the driving end of the cylinder one is fixedly connected with the positioning block; the positioning block is slidably connected with the positioning plate through a limiting groove; and the positioning plate is used for blocking the forward movement of the material supporting assembly to position the stainless steel pipe.

[0017] Further, each group of material supporting assemblies is composed of two placing rollers for supporting the stainless steel pipe; the two ends of the placing rollers are rotatably connected with the belt conveyor through connecting pieces; and the positioning plate is used for blocking the forward movement of the placing rollers to position the stainless steel pipe.

[0018] Further, the welding rotating mechanism comprises pipe cover welding rotating assemblies and a stainless steel pipe rotating assembly, the two pipe cover welding rotating assemblies are symmetrically arranged on the left and right sides of the belt conveyor, the stainless steel pipe rotating assembly is located at the upper end of the belt conveyor, the pipe cover welding rotating assembly is connected with the base, the stainless steel pipe rotating assembly is connected with the upper end of the positioning plate, the pipe cover welding rotating assembly is used for pushing the stainless steel pipe cover to the machining station and driving the stainless steel pipe cover to rotate, and the stainless steel pipe rotating assembly is used for driving the stainless steel pipe to rotate.

[0019] Further, the pipe cover welding rotating assembly comprises an adsorption disc, a second air cylinder, a first rotating shaft and a first motor, the first rotating shaft is rotationally connected with the upper end of the base, the right end of the first rotating shaft is fixedly connected with the driving end of the first motor, the lower end of the first motor is fixedly connected with the base, the end of the first rotating shaft close to the belt conveyor is fixedly connected with the second air cylinder through a connecting piece, the driving end of the second air cylinder is fixedly connected with the adsorption disc, and the side of the inclined plate close to the adsorption disc is provided with a avoiding hole for the adsorption disc to pass through; the side of the adsorption disc close to the belt conveyor is flush with the inner side wall of the inclined plate away from the belt conveyor, so that the stainless steel pipe cover immediately falls and is adsorbed by the adsorption disc.

[0020] Further, the stainless steel pipe rotating assembly comprises a third air cylinder, a sliding block, a second rotating shaft, a second motor and a resisting roller, a limiting sliding groove is arranged in the middle of the upper end of the positioning plate, and the top of the limiting sliding groove is fixedly provided with the third air cylinder; the driving end of the third air cylinder is fixedly connected with the sliding block, the two ends of the second rotating shaft are rotationally connected with the two sliding blocks, the second motor is fixedly connected with one sliding block, and the driving end of the second motor is fixedly connected with the second rotating shaft; the sliding block is fixedly connected with the welding mechanism, and the resisting roller is fixedly connected with the outer wall of the second rotating shaft.

[0021] Further, the adsorption disc adopts a vacuum adsorption structure.

[0022] Compared with the prior art, the utility model has the advantages that 1, the both sides of the stainless steel pipe which need to be welded with pipe covers can be welded with pipe covers at the same time;

[0023] 2, during the welding process, the stainless steel pipe and the pipe cover can be placed on the conveying line and the inclined plate one by one by manual operation, so that continuous welding can be realized, and the processing efficiency is improved. DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0025] Figure 1 It is a three-dimensional view of the ring seam stainless steel pipe welding device convenient to position of the utility model Figure 1;

[0026] Figure 2 It is a front view of the girth seam stainless steel pipe welding device convenient to position of the utility model;

[0027] Figure 3 It is a three-dimensional view of the girth seam stainless steel pipe welding device convenient to position of the utility model Figure 2 ;

[0028] Figure 4 It is a three-dimensional view of the girth seam stainless steel pipe welding device convenient to position of the utility model Figure 3 ;

[0029] Figure 5 It is Figure 1 The enlarged view of A in the middle.

[0030] The reference numerals in the drawing respectively represent:

[0031] 1, base station;2, conveyor;3, stainless steel pipe and pipe cover loading positioning mechanism;31, stainless steel pipe loading positioning assembly;311, placing roller;312, positioning block;313, cylinder one;32, pipe cover loading positioning assembly;321, inclined plate;322, avoidance hole;323, positioning plate;324, conical positioning hole;4, welding rotation mechanism;41, pipe cover welding rotation assembly;411, adsorption disc;412, cylinder two;413, rotating shaft one;414, motor one;42, stainless steel pipe rotation assembly;421, cylinder three;422, sliding block;423, rotating shaft two;424, motor two;425, limit sliding slot;426, abutting roller;5, welding mechanism. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] In the following description, "left", "right", "front", "back", "upper", "lower" are oriented in the perspective direction of the front view.

[0034] Embodiment one: in some embodiments, please refer to the front view of the drawings in the specification Figures 1-5 A kind of girth seam stainless steel pipe welding device convenient to position, including base station 1;

[0035] The upper end of the base 1 is fixedly provided with a belt conveyor 2, which is used for conveying the stainless steel pipe to a welding position and conveying the finished product away from the welding position after welding is completed.

[0036] The upper end of the base 1 is provided with a stainless steel pipe and pipe cover feeding and positioning mechanism 3, which is used for positioning the feeding of the stainless steel pipe and pipe cover before welding.

[0037] The stainless steel pipe and pipe cover feeding and positioning mechanism 3 comprises a stainless steel pipe feeding and positioning assembly 31 and a pipe cover feeding and positioning assembly 32, the stainless steel pipe feeding and positioning assembly 31 is connected with the upper and lower ends of the belt conveyor 2, the two groups of pipe cover feeding and positioning assemblies 32 are symmetrically arranged on the left and right sides of the belt conveyor 2, the lower end of the pipe cover feeding and positioning assembly 32 is connected with the base 1, the stainless steel pipe feeding and positioning assembly 31 is used for positioning the feeding of the stainless steel pipe before welding, and the pipe cover feeding and positioning assembly 32 is used for positioning the feeding of the stainless steel pipe cover before welding.

[0038] The upper end of the base 1 is provided with a welding rotating mechanism 4 for rotating the stainless steel pipe and the stainless steel pipe cover during welding.

[0039] The welding rotating mechanism 4 is provided with a welding mechanism 5 for welding the stainless steel pipe and the stainless steel pipe cover, and the welding mechanism 5 adopts a submerged arc automatic welding machine on the market.

[0040] In the utility model, the operator places the stainless steel pipe and the pipe cover on the stainless steel pipe feeding and positioning assembly 31 and the pipe cover feeding and positioning assembly 32 respectively, the stainless steel pipe feeding and positioning assembly 31 sends the stainless steel pipe to a machining station, the pipe cover feeding and positioning assembly 32 sends the pipe cover to a machining preparation station, then the welding rotating mechanism 4 pushes the pipe cover to move from the pipe cover feeding and positioning assembly 32 to the machining station, then the welding mechanism 5 welds the stainless steel pipe and the pipe cover, and the welding rotating mechanism 4 drives the stainless steel pipe and the pipe cover to rotate for girth welding, after welding is completed, the stainless steel pipe feeding and positioning assembly 31 and the pipe cover feeding and positioning assembly 32 continue to rotate, the belt conveyor 2 drives the next stainless steel pipe above the belt conveyor 2 to enter the machining station and sends the finished workpiece out, so that the stainless steel pipe and the pipe cover are continuously welded on both sides of the stainless steel pipe only by manually placing the stainless steel pipe and the pipe cover, and the machining efficiency is improved.

[0041] The pipe cover loading positioning assembly 32 comprises an inclined plate 321 and a positioning plate 323; the lower end of the inclined plate 321 is fixedly connected with the base 1, the inclined plate 321 is a straight plate with the rear side being higher and the front side being lower, and a baffle is fixedly installed at the front end of the inclined plate 321; after the stainless steel pipe cover is placed at the rear side of the inclined plate 321, the stainless steel pipe cover rolls to the front baffle of the inclined plate 321; side plates are fixedly installed at the left and right sides of the inclined plate 321 to limit the stainless steel pipe cover; the front end of the side plate on the side of the inclined plate 321 away from the belt conveyor 2 is provided with an avoiding hole 322; the upper end of the belt conveyor 2 is fixedly installed with the positioning plate 323 on the side close to the inclined plate 321; the positioning plate 323 is provided with a tapered positioning hole 324 for positioning the stainless steel pipe cover when the stainless steel pipe cover is sent to the machining station; and the opening on the side of the tapered positioning hole 324 close to the belt conveyor 2 is smaller than the other side of the tapered positioning hole 324.

[0042] The stainless steel pipe loading positioning assembly 31 comprises a material supporting assembly, a positioning block 312 and a cylinder one 313; a plurality of material supporting assemblies are uniformly distributed on the outer side wall of the belt of the belt conveyor 2; the lower end of the side of the two positioning plates 323 close to each other is fixedly installed with the cylinder one 313; the driving end of the cylinder one 313 is fixedly connected with the positioning block 312; the positioning block 312 is slidingly connected with the positioning plate 323 through a limiting groove; and the positioning plate 323 is used for blocking the forward movement of the material supporting assembly to position the stainless steel pipe.

[0043] Each group of material supporting assemblies comprises two placing rollers 311 used for cooperating to support the stainless steel pipe; the two ends of the placing roller 311 are rotationally connected with the belt of the belt conveyor 2 through a connecting piece; and the positioning plate 323 is used for blocking the forward movement of the placing roller 311 to position the stainless steel pipe.

[0044] In the utility model, the operator places the stainless steel pipes on the plurality of placing rollers 311 on the rear side one by one, and places the stainless steel pipe covers at the rear ends of the inclined plates 321 on the two sides; the belt conveyor 2 drives the stainless steel pipes to the machining station through the placing rollers 311, pushes down the positioning block 312 to abut against one end of the placing roller 311 to position the stainless steel pipe by the cylinder one 313, and slides the stainless steel pipe cover to the machining preparation station; then the welding rotating mechanism 4 pushes the stainless steel pipe cover to enter the machining station after positioning through the tapered positioning hole 324 formed in the positioning plate 323, and the stainless steel pipe covers on the two sides are pressed inward to position the steel pipe; then the welding rotating mechanism 4 drives the stainless steel pipe and the pipe cover to rotate, and the welding mechanism 5 welds the stainless steel pipe and the pipe cover.

[0045] The welding rotating mechanism 4 comprises a pipe cover welding rotating assembly 41 and a stainless steel pipe rotating assembly 42, the two pipe cover welding rotating assemblies 41 are symmetrically arranged on the left and right sides of the belt conveyor 2, the stainless steel pipe rotating assembly 42 is located at the upper end of the belt conveyor 2, the pipe cover welding rotating assembly 41 is connected with the base 1, the stainless steel pipe rotating assembly 42 is connected with the upper end of the positioning plate 323, the pipe cover welding rotating assembly 41 is used for pushing the stainless steel pipe cover to a machining station and rotating the stainless steel pipe cover, and the stainless steel pipe rotating assembly 42 is used for rotating the stainless steel pipe.

[0046] The pipe cover welding rotating assembly 41 comprises a suction disc 411, a cylinder two 412, a rotating shaft one 413 and a motor one 414; the rotating shaft one 413 is rotationally connected with the upper end of the base 1, the right end of the rotating shaft one 413 is fixedly connected with the driving end of the motor one 414, the lower end of the motor one 414 is fixedly connected with the base 1, the end of the rotating shaft one 413, close to the belt conveyor 2, is fixedly connected with the cylinder two 412 through a connecting piece, the driving end of the cylinder two 412 is fixedly connected with the suction disc 411, and the side, close to the suction disc 411, of the inclined plate 321 is provided with an avoiding hole, through which the suction disc 411 passes; the side, close to the belt conveyor 2, of the suction disc 411 is flush with the inner side wall, away from the belt conveyor 2, of the inclined plate 321, so that the stainless steel pipe cover, which rolls down, is immediately adsorbed by the suction disc 411.

[0047] The stainless steel pipe rotating assembly 42 comprises a cylinder three 421, a sliding block 422, a rotating shaft two 423, a motor two 424 and a pressing roller 426; the upper end of the positioning plate 323 is provided with a limiting sliding groove 425, and the cylinder three 421 is fixedly installed on the inner top of the limiting sliding groove 425; the driving end of the cylinder three 421 is fixedly connected with the sliding block 422, the two ends of the rotating shaft two 423 are rotationally connected with the two sliding blocks 422, the motor two 424 is fixedly connected with one sliding block 422, and the driving end of the motor two 424 is fixedly connected with the rotating shaft two 423; the sliding block 422 is fixedly connected with the welding mechanism 5, and the pressing roller 426 is fixedly connected with the outer wall of the rotating shaft two 423.

[0048] In the utility model, the two cylinder threes 421 push and move the two sliding blocks 422 downwards at the same time, the sliding blocks 422 move downwards and drive the pressing roller 426 on the rotating shaft two 423 to abut against the stainless steel pipe, the suction disc 411 contacts and adsorbs the stainless steel pipe cover at the same time, then the cylinder two 412 pushes the stainless steel pipe cover to pass through the pipe positioning plate 323 and abut against the stainless steel pipe after positioning, the two pipe covers extrude the stainless steel pipe to the middle at the same time, extrude the stainless steel pipe to the central position and realize horizontal positioning, then the motor one 414 and the motor two 424 are started and drive the rotating shaft one 413 and the rotating shaft two 423 to rotate respectively, the rotating shaft one 413 rotates and drives the stainless steel pipe cover to rotate, the rotating shaft two 423 rotates and drives the stainless steel pipe to rotate through the pressing roller 426, and the welding mechanism 5 welds between the stainless steel pipe and the pipe cover at the same time, so that automatic positioning and welding of the stainless steel pipe and the pipe cover are realized.

[0049] The adsorption disc 411 adopts a vacuum adsorption structure, so that the adsorption effect on the stainless steel pipe is better.

[0050] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ring jointed stainless steel pipe welding apparatus which is facilitated in positioning, comprising a base (1), characterized in that: It also includes belt conveyor (2), stainless steel pipe and pipe cover loading positioning mechanism (3), welding rotating mechanism (4) and welding mechanism (5); The upper end of the base (1) is fixedly provided with a belt conveyor (2), which is used for conveying the stainless steel pipe to the welding position and sending the finished product away from the welding position after welding; The upper end of the base (1) is provided with a stainless steel pipe and pipe cover loading positioning mechanism (3), which is used for positioning the loading before welding of the stainless steel pipe and pipe cover; The stainless steel pipe and pipe cover loading positioning mechanism (3) comprises a stainless steel pipe loading positioning assembly (31) and a pipe cover loading positioning assembly (32), the stainless steel pipe loading positioning assembly (31) is connected with the upper and lower ends of the belt conveyor (2), the two groups of pipe cover loading positioning assemblies (32) are symmetrically arranged on the left and right sides of the belt conveyor (2), the lower end of the pipe cover loading positioning assembly (32) is connected with the base (1), the stainless steel pipe loading positioning assembly (31) is used for positioning the loading before welding of the stainless steel pipe, and the pipe cover loading positioning assembly (32) is used for positioning the loading before welding of the stainless steel pipe cover. The upper end of the base (1) is provided with a welding rotating mechanism (4) for rotating the stainless steel pipe and the stainless steel pipe cover during welding; The welding rotating mechanism (4) is provided with a welding mechanism (5) for welding the stainless steel pipe and the stainless steel pipe cover.

2. The ring joint stainless steel pipe welding apparatus of claim 1, wherein, The pipe cover loading positioning assembly (32) comprises an inclined plate (321) and a positioning plate (323); the lower end of the inclined plate (321) is fixedly connected with the base (1), the inclined plate (321) is a straight plate with the rear side being higher than the front side, a baffle is fixedly installed at the front end of the inclined plate (321), the stainless steel pipe cover is placed from the rear side of the inclined plate (321), and then rolls to the front of the baffle, side plates are fixedly installed on the left and right sides of the inclined plate (321) to limit the stainless steel pipe cover, an avoiding hole (322) is formed in the front end of the side plate away from the belt conveyor (2), the positioning plate (323) is fixedly installed on the upper end of the belt conveyor (2) close to the inclined plate (321), a tapered positioning hole (324) is formed in the positioning plate (323) for positioning the stainless steel pipe cover when it is sent to the machining station, and the opening of the tapered positioning hole (324) close to the belt conveyor (2) is smaller than the other side of the tapered positioning hole (324).

3. The ring joint stainless steel pipe welding apparatus of claim 2, wherein, The stainless steel pipe loading positioning assembly (31) comprises a material supporting assembly, a positioning block (312) and a cylinder (313); a plurality of material supporting assemblies are uniformly distributed on the outer side wall of the belt conveyor (2), the lower end of the side close to each other of the two positioning plates (323) is fixedly provided with a cylinder (313), the driving end of the cylinder (313) is fixedly connected with the positioning block (312), the positioning block (312) is slidably connected with the positioning plate (323) through a limiting groove, and the positioning plate (323) is used for blocking the forward movement of the material supporting assembly to position the stainless steel pipe.

4. The ring joint stainless steel pipe welding apparatus of claim 3, wherein, Each group of the material supporting assembly is composed of two placing rollers (311) for matching supporting the stainless steel pipe, and the two ends of the placing roller (311) are rotatably connected with the belt conveyor (2) through a connecting piece, and the positioning plate (323) is used for blocking the forward movement of the placing roller (311) to position the stainless steel pipe.

5. The ring joint stainless steel pipe welding apparatus of claim 2, wherein, The welding rotating mechanism (4) comprises pipe cover welding rotating assemblies (41) and stainless steel pipe rotating assemblies (42), the two groups of pipe cover welding rotating assemblies (41) are symmetrically arranged on the left and right sides of the belt conveyor (2), the stainless steel pipe rotating assemblies (42) are located at the upper end of the belt conveyor (2), the pipe cover welding rotating assemblies (41) are connected with the base (1), the stainless steel pipe rotating assemblies (42) are connected with the upper end of the positioning plate (323), the pipe cover welding rotating assemblies (41) are used for pushing the stainless steel pipe cover to the machining station and driving the rotation, and the stainless steel pipe rotating assemblies (42) are used for driving the stainless steel pipe to rotate.

6. The ring joint stainless steel pipe welding apparatus of claim 5, wherein, The pipe cover welding rotating assembly (41) comprises a suction disc (411), a cylinder two (412), a rotating shaft one (413) and a motor one (414), the rotating shaft one (413) is rotatably connected with the upper end of the base (1), the right end of the rotating shaft one (413) is fixedly connected with the driving end of the motor one (414), the lower end of the motor one (414) is fixedly connected with the base (1), one end of the rotating shaft one (413) close to the belt conveyor (2) is fixedly connected with the cylinder two (412) through a connecting piece, the driving end of the cylinder two (412) is fixedly connected with the suction disc (411), and the oblique plate (321) is provided with a avoiding hole for the suction disc (411) to pass through on the side close to the suction disc (411); the side of the suction disc (411) close to the belt conveyor (2) is flush with the inner side wall of the oblique plate (321) away from the belt conveyor (2), so that the stainless steel pipe cover immediately rolled down is adsorbed by the suction disc (411).

7. The ring joint stainless steel pipe welding apparatus of claim 6, wherein, The stainless steel pipe rotating assembly (42) comprises a cylinder three (421), a sliding block (422), a rotating shaft two (423), a motor two (424) and a resisting roller (426), a limiting sliding groove (425) is formed in the upper end of the positioning plate (323), and the cylinder three (421) is fixedly installed on the inner top of the limiting sliding groove (425); the driving end of the cylinder three (421) is fixedly connected with the sliding block (422), the two ends of the rotating shaft two (423) are rotatably connected with the two sliding blocks (422), the motor two (424) is fixedly connected with one sliding block (422), and the driving end of the motor two (424) is fixedly connected with the rotating shaft two (423); the sliding block (422) is fixedly connected with the welding mechanism (5), and the resisting roller (426) is fixedly connected with the outer wall of the rotating shaft two (423).

8. The ring joint stainless steel pipe welding apparatus of claim 6, wherein, The suction disc (411) adopts a vacuum adsorption structure.

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