Stainless steel pipe prefabrication automatic welding system

Abstract

The present invention discloses a stainless steel pipeline prefabrication automatic welding system, comprising a fixed ring sleeved outside the pipeline, a sliding member arranged on the fixed ring and moving circumferentially along the fixed ring, and a welding gun fixed on the sliding member, the welding gun follows the sliding member to move circumferentially on the fixed ring to automatically circumferentially weld the two pipeline welds after being paired, the fixed ring is fixedly sleeved on the outer periphery of the two paired and fixed pipeline welds, the central axis of the fixed ring coincides with the central axis of the pipeline, the sliding member is driven by a driving mechanism to automatically move circumferentially along the fixed ring at a set speed, the welding gun is fixed on the sliding member and faces the weld just at a set distance and welds the weld. The present invention realizes the automation of the welding process through a simple structure, has high construction efficiency, excellent quality, and meets the construction requirements of the application project.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding, and more particularly to a stainless steel pipeline prefabrication automatic welding system. Background Art

[0002] At present, most of the construction technologies for stainless steel pipeline projects still use traditional technologies: manual welding and traditional argon-filled shielded welding. This traditional method requires a large investment in technical personnel, is difficult to fill with argon, and has a long construction period. For the prefabrication of stainless steel pipeline projects in polysilicon projects, the pipelines are generally assembled first to obtain the welds required for the project, and then automatically welded using automatic welding equipment. Vigorously developing automatic welding technology is an important way to implement the requirements of green and low-carbon cycles and improve the level of industrialization. The existing automatic welding system is not suitable for the construction of this application project. This application sets up an automatic welding system suitable for the construction of this project. Summary of the invention

[0003] One object of the present invention is to provide a stainless steel pipe prefabrication automatic welding system, which realizes the automation of the welding process through a simple structure, has high construction efficiency and excellent quality, and is in line with the construction of the project of this application.

[0004] In order to solve the above technical problems, the present invention provides an automatic welding system for prefabricated stainless steel pipes, comprising a fixed ring sleeved on the outside of the pipe, a sliding member arranged on the fixed ring and moving circumferentially along the fixed ring, and a welding gun fixed on the sliding member, the welding gun follows the sliding member to move circumferentially on the fixed ring to automatically circumferentially weld the two assembled pipe welds, the fixed ring is fixedly sleeved on the outer circumference of the two assembled and fixed pipe welds, the central axis of the fixed ring coincides with the central axis of the pipe, the sliding member is driven by a driving mechanism to automatically move circumferentially along the fixed ring at a set speed, the welding gun is fixed on the sliding member and just faces the weld at a set distance and welds the weld.

[0005] Preferably, a pair of fixing rings are arranged at intervals and the pair of fixing rings are connected as a whole by a connecting piece, and an annular track is arranged on the pair of fixing rings, and a pair of pulleys are arranged at the bottom of the sliding piece relative to each other and cooperate to slide on the pair of annular tracks. The sliding piece includes a first fixing beam and a second fixing beam located at an interval behind the first fixing beam, and the welding gun is fixedly passed through the first fixing beam, and pulleys are arranged at opposite ends of the first fixing beam and the second fixing beam and slide on the slide rail accordingly, and the first fixing beam and the second fixing beam are connected as a whole by a connecting rod, and an inwardly concave groove is arranged on the second fixing beam, and a clamping plate is matched thereon, and a circuit corresponding to the welding gun is located in the groove and is fixed by clamping the clamping plate, and a third fixing beam is arranged on one of the fixing rings, and its structure is exactly the same as that of the second fixing beam, and the groove on the third fixing beam is larger than the groove on the second fixing beam so that the circuit corresponding to the welding gun can freely pass through the groove on the third fixing beam, and the third fixing beam is arranged at an interval with the second fixing beam and is located behind the moving direction of the welding gun.

[0006] Preferably, one end of the card plate is hinged on the second fixed beam, and the other end is mounted on a pin provided on the second fixed beam through a pull ring. An elastic block is provided on the bottom surface of the card plate facing the slot, which is tightly against the line in the slot. No elastic block is provided on the card plate on the third fixed beam.

[0007] Preferably, the connecting member includes a base, with frame-shaped accommodating cavities symmetrically arranged on both sides thereof, a movable counterweight block is arranged in the accommodating cavity, and a pair of connecting columns are arranged on the top of the base, and the top surfaces thereof are concave arcs. The pair of connecting columns are respectively matched and fixedly connected to a pair of fixing rings through the arcs on their top surfaces, and the space between the pair of connecting columns and the base does not affect the welding work of the welding gun.

[0008] Preferably, the welding equipment is also provided with a control system, which is used to control the opening and closing of the driving mechanism and the driving speed, and the control system also controls the welding parameters of the welding gun.

[0009] Preferably, two pipes to be welded are supported and paired by a supporting mechanism at the bottom, and each pipe corresponds to at least two supporting mechanisms, the supporting mechanism includes a supporting base plate, a supporting block that is an integral structure with the supporting base plate, a pair of rollers arranged on the top of the supporting block, and a pad supported under the supporting base plate, the supporting base plate coincides with the vertical center axis of the supporting block, the outer periphery of the supporting base plate protrudes outside the outer periphery of the supporting block, the pipe is supported between a pair of rollers, and no pad or at least one pad is provided under the supporting base plate according to height requirements, and the pad and the supporting base plate are fixedly connected to the construction surface by bolts.

[0010] Preferably, a fixed ruler with scales is correspondingly arranged beside each supporting mechanism, the fixed ruler and the supporting mechanism are located in the same plane and are arranged parallel to each other, and the fixed ruler is used to detect the height of the supporting mechanism.

[0011] Preferably, the surface of the construction surface is concave to form a concave hole, the bottom end of the fixed ruler is engaged and fixed in the concave hole, and the depth of the fixed ruler in the concave hole is equal to the height between the lowest point of the pipe after it is located on the roller and the top surface of the support block.

[0012] The present invention has at least the following beneficial effects:

[0013] 1. The pipeline of the present invention does not rotate during automatic welding, but is welded by rotating the welding gun. Compared with the rotation of the pipeline, the rotation of the welding gun is simpler and uses relatively fewer structures. During the welding rotation process, a fixed ring and a sliding mechanism are set to enable the welding gun to automatically rotate following the weld seam and achieve welding. During the rotation of the welding gun, the line is guided by the fixed beam, and there will be no problems such as scattered lines affecting welding.

[0014] 2. When the pipelines of the present invention are assembled, the height is adjusted vertically by the support mechanism to achieve accurate assembly of pipelines of different types and sizes, thereby achieving accurate setting of weld parameters.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a side view of the fixing ring of the present invention;

[0018] Figure 3 It is a schematic diagram of the second fixed beam structure of the present invention;

[0019] Figure 4 It is a side view of the support mechanism of the present invention.

[0020] Description of reference numerals:

[0021] 1. Pipeline, 2. Fixed ring, 3. Welding gun, 4. Pulley, 5. First fixed beam, 6. Second fixed beam, 7. Slot, 8. Card plate, 9. Base, 10. Accommodating cavity, 11. Connecting column, 12. Support bottom plate, 13. Support block, 14. Cushion block, 15. Fixed ruler, 16. Roller. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0023] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 4 As shown, the present invention provides an automatic welding system for prefabricated stainless steel pipes, comprising a fixed ring 2 sleeved on the outside of a pipe 1, a sliding member arranged on the fixed ring 2 and moving circumferentially along the fixed ring 2, and a welding gun 3 fixed on the sliding member, the welding gun 3 follows the sliding member to move circumferentially on the fixed ring 2 to automatically circumferentially weld the welds of the two paired pipes 1, the fixed ring 2 is fixedly sleeved on the outer periphery of the welds of the two paired and fixed pipes 1, the central axis of the fixed ring 2 coincides with the central axis of the pipe 1, the sliding member is driven by a driving mechanism to automatically move circumferentially along the fixed ring 2 at a set speed, the welding gun 3 is fixed on the sliding member and faces the weld just at a set distance and welds the weld.

[0025] The weld seam of the pipe 1 is welded by the welding gun 3 on the welding equipment. To realize automatic welding during the welding process, the pipe 1 needs to rotate while the welding gun 3 does not move, or the welding gun 3 rotates while the pipe 1 does not move, so that automatic welding of the weld seam can be realized. The present application adopts the method of rotating the welding gun 3, and the welding gun 3 rotates along the fixed ring 2 on the outer periphery of the weld seam of the pipe 1. The welding gun 3 is fixed by a sliding member, and the sliding member is slidably fixed on the fixed ring 2, thereby driving the welding gun 3 to rotate circumferentially under the drive of the driving mechanism to realize automatic welding of the weld seam of the pipe 1.

[0026] In another embodiment, the fixing rings 2 are arranged in pairs at intervals and the pair of fixing rings 2 are connected as a whole by a connecting piece, and an annular track is arranged on the pair of fixing rings 2. A pair of pulleys 4 are arranged at the bottom of the sliding member relative to each other and slide on the pair of annular tracks. The sliding member includes a first fixing beam 5 and a second fixing beam 6 located at intervals behind the first fixing beam 5. The welding gun 3 is fixed through the first fixing beam 5. The first fixing beam 5 and the second fixing beam 6 are arranged at opposite ends thereof. The pulleys 4 are correspondingly cooperated to slide on the slide rails. The first fixing beam 5 and the second fixing beam 6 are arranged at opposite ends thereof. 6 are connected as a whole by a connecting rod, the second fixed beam 6 is provided with an inwardly concave card slot 7, on which a card plate 8 is matched, the circuit corresponding to the welding gun 3 is located in the card slot 7 and is fixed by the card plate 8, one of the fixing rings 2 is provided with a third fixed beam, which has the same structure as the second fixed beam 6, the card slot 7 on the third fixed beam is larger than the card slot 7 on the second fixed beam 6 so that the circuit corresponding to the welding gun 3 can freely pass through the card slot 7 on the third fixed beam, and the third fixed beam is spaced apart from the second fixed beam 6 and is located behind the moving direction of the welding gun 3.

[0027] The first fixed beam 5 and the second fixed beam 6 are connected as a whole through a connecting rod, and are respectively provided with four pulleys 4, which is equivalent to forming a small car that moves circumferentially on the fixed ring 2. The welding gun 3 is first adjusted in position and fixedly installed on the first fixed beam 5, and then the corresponding route of the welding gun 3 is arranged and sequentially set on the second fixed beam 6 and the third fixed beam. The second fixed beam 6 moves with the welding gun 3 to fix the line to prevent the line from affecting the welding of the welding gun 3. The third fixed beam is located on one of the fixed rings 2 and does not move with the welding gun 3, so as to guide the line in real time to prevent the line from scattering and affecting the welding. A pair of fixed rings 2 are relatively arranged outside the two pipes 1 and connected as a whole through a connector. By adjusting the position of a pair of fixed rings 2, the welding position of the welding gun 3 is accurately positioned, and then a pair of fixed rings 2 are fixed to prevent it from shifting during the welding process and affecting the quality and accuracy of the welding.

[0028] In another embodiment, one end of the clamping plate 8 is hinged to the second fixed beam 6, and the other end is sleeved on a pin provided on the second fixed beam 6 through a pull ring. An elastic block is provided on the bottom surface of the clamping plate 8 facing the clamping slot 7, which is tightly against the line in the clamping slot 7. The clamping plate 8 on the third fixed beam is not provided with an elastic block.

[0029] When fixing the line, the clamping plate 8 on the second fixing beam 6 is loosened and the pull ring is opened, and the line is fixed in the clamping groove 7. The clamping plate 8 is fixed on the pin shaft through the pull ring, and the elastic block is pressed against the line to fix the line. The clamping plate 8 and the clamping groove 7 on the third fixing beam only limit the line therein and guide it to shuttle.

[0030] In another embodiment, the connecting part includes a base 9, and frame-shaped accommodating cavities 10 are symmetrically arranged on both sides of the base 9. A movable counterweight block is arranged in the accommodating cavity 10. A pair of connecting columns 11 are arranged on the top of the base 9, and the top surface of the base 9 is a concave arc. The pair of connecting columns 11 are respectively matched and fixedly connected to a pair of fixing rings 2 through the arc of the top surface. The space between the pair of connecting columns 11 and the base 9 does not affect the welding work of the welding gun 3.

[0031] A pair of fixing rings 2 are connected as a whole through a connector to form an independent part, or connected as a whole with the welding gun 3 and formed as an integrated structure with the welding equipment. When in use, the counterweight is not placed in the accommodating chamber 10, which is convenient for overall movement. When the pipes 1 are placed in pairs, after one of the pipes 1 is placed, the fixing ring 2 is moved to be sleeved outside the pipe 1, and the other pipe 1 is placed again. After the two pipes 1 are paired, the fixing ring 2 is horizontally moved to the weld of the two pipes 1, and then after positioning, the counterweight is placed in the accommodating chamber 10 to achieve stable fixation of the base 9, thereby achieving position fixation of the pair of fixing rings 2, and also achieving position fixation of the welding gun 3 except for the circumferential direction.

[0032] In another embodiment, the welding device is further provided with a control system, which is used to control the opening and closing of the driving mechanism and the driving speed. The control system also controls the welding parameters of the welding gun 3.

[0033] In another embodiment, two pipes 1 to be welded are supported and paired by a support mechanism at the bottom, and each pipe 1 corresponds to at least two support mechanisms, and the support mechanism includes a support base plate 12, a support block 13 which is an integral structure with the support base plate 12, a pair of rollers 16 arranged on the top of the support block 13, and a pad 14 supported below the support base plate 12, the support base plate 12 coincides with the vertical center axis of the support block 13, the outer periphery of the support base plate 12 protrudes outside the outer periphery of the support block 13, the pipe 1 is supported in the middle of a pair of rollers 16, and no or at least one pad 14 is set below the support base plate 12 according to height requirements, and the pad 14 and the support base plate 12 are fixedly connected to the construction surface by bolts.

[0034] When the pipes 1 are paired, the heights of the two pipes 1 may be inconsistent due to different diameters and thicknesses of the pipes 1. That is, in order to meet the required pairing requirements, the lowest end heights of the two pipes 1 may be inconsistent. At this time, the support heights of the two pipes 1 are inconsistent. Therefore, the present application achieves the satisfaction of the pairing requirements of various pipes 1 through the height adjustment of the support mechanism. The height of the pipe 1 from the construction surface after support is calculated in advance according to the thickness and other parameters of the pipe 1. If the height is consistent, the support mechanisms on both sides can be set with the same structure. If the height is inconsistent, it is adjusted through the pad 14. The pad 14 has a variety of sizes with different thicknesses. According to the needs, the appropriate pad 14 is selected and set under the support base plate 12, and then fixed as a whole. The pipe 1 is directly supported by a pair of rollers 16, which is convenient for movement, rotation and other adjustments.

[0035] In another embodiment, a fixed ruler 15 with scales is arranged on the side of each supporting mechanism. The fixed ruler 15 and the supporting mechanism are located in the same plane and are arranged parallel to each other. The fixed ruler 15 is used to detect the height of the supporting mechanism and assist manual calculation so that the height meets the requirements.

[0036] In another embodiment, the surface of the construction surface is concave to form a concave hole, and the bottom end of the fixed ruler 15 is engaged and fixed in the concave hole. The depth of the fixed ruler 15 in the concave hole is equal to the height between the lowest point of the pipe 1 and the top surface of the support block 13 after the pipe 1 is located on the roller 16. In this arrangement, it is only necessary to observe the scale of the fixed ruler 15 corresponding to the top surface of the support block 13, which is more convenient for alignment than observing the lowest point of the pipe 1.

[0037] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation mode, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, other modifications can be easily implemented, so without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. Stainless steel pipeline prefabrication automatic welding system, characterized by: It comprises a fixed ring sleeved on the outside of the pipeline, a sliding member arranged on the fixed ring and moving circumferentially along the fixed ring, and a welding gun fixed on the sliding member, the welding gun follows the sliding member to move circumferentially on the fixed ring to automatically circumferentially weld the weld seams of the two paired pipelines, the fixed ring is fixedly sleeved on the outer periphery of the weld seams of the paired and fixed two pipelines, the central axis of the fixed ring coincides with the central axis of the pipeline, the sliding member is driven by a driving mechanism to automatically move circumferentially along the fixed ring at a set speed, the welding gun is fixed on the sliding member and faces the weld seam just at a set distance to weld the weld seam; The fixing rings are arranged in a pair at intervals and the pair of fixing rings are connected as a whole by a connecting piece, and an annular track is arranged on the pair of fixing rings, and a pair of pulleys are arranged relatively at the bottom of the sliding member and cooperate to slide on the pair of annular tracks. The sliding member includes a first fixed beam and a second fixed beam located at an interval behind the first fixed beam, and the welding gun is fixedly passed through the first fixed beam, and pulleys are arranged at opposite ends of the first fixed beam and the second fixed beam and slide on the slide rail accordingly. The first fixed beam and the second fixed beam are connected as a whole through a connecting rod, and an inwardly concave groove is arranged on the second fixed beam, and a clamping plate is matched thereon. The circuit corresponding to the welding gun is located in the groove and is fixed by clamping the clamping plate. A third fixed beam is arranged on one of the fixing rings, and its structure is exactly the same as the second fixed beam. The groove on the third fixed beam is larger than the groove on the second fixed beam so that the circuit corresponding to the welding gun can freely pass through the groove on the third fixed beam. The third fixed beam is arranged at an interval with the second fixed beam and is located behind the moving direction of the welding gun.

2. The stainless steel pipeline prefabrication automatic welding system according to claim 1, characterized in that: One end of the card plate is hinged on the second fixed beam, and the other end is sleeved on the pin shaft arranged on the second fixed beam through a pull ring. An elastic block is arranged on the bottom surface of the card plate facing the card slot, which is tightly against the line in the card slot. The card plate on the third fixed beam is not provided with an elastic block.

3. The stainless steel pipeline prefabrication automatic welding system according to claim 1, characterized in that: The connecting piece includes a base, and frame-shaped accommodating cavities are symmetrically arranged on both sides of the base. A movable counterweight block is arranged in the accommodating cavity. A pair of connecting columns are arranged on the top of the base, and the top surface of the base is a concave arc. The pair of connecting columns are respectively matched and fixedly connected to a pair of fixing rings through the arc of the top surface. The space between the pair of connecting columns and the base does not affect the welding work of the welding gun.

4. The stainless steel pipeline prefabrication automatic welding system according to claim 1, characterized in that: The welding equipment is also provided with a control system, which is used to control the opening and closing of the driving mechanism and the driving speed. The control system also controls the welding parameters of the welding gun.

5. The stainless steel pipeline prefabrication automatic welding system according to claim 1, characterized in that: Two pipes to be welded are supported and paired by the support mechanism at the bottom, and each pipe corresponds to at least two support mechanisms, and the support mechanism includes a support base plate, a support block that is an integral structure with the support base plate, a pair of rollers arranged on the top of the support block, and a pad supported under the support base plate. The support base plate coincides with the vertical center axis of the support block, the outer periphery of the support base plate protrudes outside the outer periphery of the support block, the pipe is supported in the middle of a pair of rollers, and no or at least one pad is set under the support base plate according to height requirements, and the pad is fixed to the construction surface with the support base plate by bolts.

6. The stainless steel pipeline prefabrication automatic welding system according to claim 5, characterized in that: A fixed ruler with scales is correspondingly arranged beside each supporting mechanism. The fixed ruler and the supporting mechanism are located in the same plane and are arranged parallel to each other. The fixed ruler is used to detect the height of the supporting mechanism.

7. The stainless steel pipeline prefabrication automatic welding system according to claim 6, characterized in that: The surface of the construction surface is concave to form a concave hole, and the bottom end of the fixed ruler is engaged and fixed in the concave hole. The depth of the fixed ruler in the concave hole is equal to the height between the lowest point of the pipeline after it is located on the roller and the top surface of the support block.

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