Surrounding welding equipment and welding method for pipeline processing

Abstract

The present invention belongs to the technical field of intelligent processing equipment, and is used to prevent molten metal from penetrating into the interior of a pipeline, affecting the smoothness of the inner wall of the pipeline, and reducing the quality of pipeline products. Specifically, it is based on a surround-type welding device for pipeline processing and a welding method thereof. The present invention provides thrust to a push block through a second push wheel, pushes a positioning sleeve located on a guide groove into the port of a first pipeline, and uses a roller conveyor to make the port of the second pipeline also engage with the positioning sleeve. The distance between the first pipeline and the second pipeline is positioned by two positioning blocks on the outer wall of the positioning sleeve to ensure the welding efficiency of the first pipeline and the second pipeline. The gap between the first pipeline and the second pipeline is blocked by the positioning sleeve to prevent molten metal from flowing into the interior of the first pipeline and the second pipeline, thereby avoiding affecting the smoothness of the inner walls of the first pipeline and the second pipeline, thereby ensuring product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent processing equipment, and in particular to a surrounding welding device for pipeline processing and a welding method thereof. Background Art

[0002] In the manufacturing field, special extra-long pipes are made by welding multiple sections of pipes. Since it is impossible to fully guarantee the synchronous rotation of the pipes to be welded, the traditional pipe welding method usually fixes the pipes to be welded and then uses the welder to make arc movements to complete the welding. However, the intelligent welding equipment in the existing technology needs to go through two steps of welding and polishing when welding pipes. These two steps require different equipment to complete. In addition, the transportation and installation process is time-consuming and labor-intensive, thereby reducing the overall processing efficiency. After transportation, it needs to be re-clamped, and there is a certain error before and after, which affects the quality of the welded pipes.

[0003] For example, in the patent document with publication number CN112222744A, the pipe interface is welded by starting the second pusher and the welding head. After the welding is completed, the cooling nozzle is started, and the second motor is controlled to start to rotate the grinding wheel. The first motor is then used to drive the gear shaft to rotate, and the second sliding seat is also rotated around the inner gear ring, and is first cooled and then ground. Because the first sliding seat and the second sliding seat are connected by a connecting plate, that is, the first sliding seat and the second sliding seat move at the same time, and the spacing remains unchanged, thereby achieving welding and grinding on the same device, and welding and grinding are carried out simultaneously without affecting each other, thereby avoiding disassembly and reassembly after welding is completed, greatly reducing labor costs, and improving overall work efficiency;

[0004] However, in the above patent document, when welding two pipes, one of the pipes needs to be fixed first, and then the other pipe is moved to make them close to each other. However, the distance between the two pipes is not convenient to define, which affects the efficiency of welding the two pipes. At the same time, during the welding process, the molten metal can easily pass through the gap between the two pipes and penetrate into the interior of the pipes, affecting the smoothness of the inner wall of the pipe, thereby reducing the product quality of the pipe. For this reason, we propose a circumferential welding device and a welding method based on pipe processing. Summary of the Invention

[0005] The object of the present invention is to provide a circumferential welding device and a welding method based on pipeline processing, wherein a second pushing wheel provides thrust to a pushing block, and pushes a positioning sleeve located on a guide groove into the port of a first pipeline, and a roller conveyor is used to make the port of the second pipeline also engage with the positioning sleeve, and two positioning blocks on the outer wall of the positioning sleeve are used to position the distance between the first pipeline and the second pipeline to ensure the welding efficiency of the first pipeline and the second pipeline, and the positioning sleeve is used to block the gap between the first pipeline and the second pipeline to prevent molten metal from flowing into the interior of the first pipeline and the second pipeline, avoiding it from affecting the smoothness of the inner walls of the first pipeline and the second pipeline, thereby ensuring product quality, avoiding molten metal from penetrating into the interior of the pipeline, affecting the smoothness of the inner wall of the pipeline, and reducing the quality of the pipeline product; and solving the problem that the gap between the two pipelines is inconvenient to define, affecting the welding efficiency of the two pipelines.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a circumferential welding device for pipe processing, comprising a support frame, a roller conveyor installed on one side above the support frame, a second pipe arranged above the roller conveyor, a welding frame fixedly arranged in the middle above the support frame, a conveying frame fixedly arranged on the other side above the support frame, a first pipe slidably arranged inside the conveying frame, a circumferential welding tool provided on the top of the welding frame, and a welding mechanism for assisting welding of the first pipe and the second pipe provided below the circumferential welding tool;

[0007] The welding mechanism includes a cylinder fixedly inserted on the top outer wall of the support frame, a pushing assembly is provided on the bottom side wall of the cylinder output end, a limiting sleeve is provided on the top side wall of the cylinder output end, a guide groove is fixedly provided above the limiting sleeve, a thrust spring is elastically provided between the top of the cylinder and the bottom of the guide groove, a slide is provided on the inner wall of the guide groove, a push block is slidably provided on the side of the slide close to the roller conveyor, and a positioning sleeve is slidably provided on the other side of the slide, and a baffle is fixedly installed on the outer wall of the welding frame above the guide groove.

[0008] Furthermore, positioning blocks are fixedly installed on both upper and lower ends of the positioning sleeve, and a lower positioning block is slidably matched with the slideway.

[0009] Furthermore, two guide rails are fixedly mounted on the outer wall of the welding frame below the baffle, and the guide grooves are in sliding engagement with the two guide rails.

[0010] Furthermore, the pushing assembly includes a connecting frame fixedly connected to the output end of the cylinder, a first pushing wheel is rotatably provided above the connecting frame, an L-shaped connecting block is fixedly installed on one side of the bottom of the guide groove close to the connecting frame, and one end of the L-shaped connecting block is rotatably connected to the L-shaped frame through a latch;

[0011] The outer wall below the L-shaped frame is in transmission cooperation with the first pushing wheel, a counterweight block is fixedly installed on the outer wall below the L-shaped frame, and a second pushing wheel is rotatably provided on the top of the L-shaped frame, and the second pushing wheel is in transmission cooperation with the side wall of the pushing block.

[0012] Furthermore, a transmission roller is fixedly installed on one side of the top of the support frame close to the roller conveyor, and the surrounding welding tool is located above the first pipe and the second pipe.

[0013] Furthermore, a threaded rod is threadedly connected to the top of the conveying frame, and a pressing block is rotatably connected to the bottom of the threaded rod through a bearing, and the pressing block is in contact with the first pipe.

[0014] The welding method based on a circumferential welding device for pipeline processing comprises the following steps:

[0015] In step 1, the threaded rod is rotated to fix the first pipe with the pressing block at its bottom. One end of the second pipe is then conveyed to the transmission roller via the roller conveyor. The cylinder is then turned on to extend the protruding end of the cylinder. The thrust spring pushes the guide groove upward, causing the guide groove to slide upward under the guidance of the guide rail.

[0016] Step 2: When the extended end of the cylinder is extended to a set length, the top of the guide groove contacts the baffle, and the inner wall of the guide groove and the inner wall of the first pipe are engaged with each other;

[0017] The extended end of the cylinder continues to extend, the thrust spring shortens, the position of the guide groove does not change, and the distance between the guide groove and the extended end of the cylinder shortens. At this time, the connecting frame cooperates with the first pushing wheel to provide thrust to the L-shaped frame, causing it to flip, thereby cooperating with the second pushing wheel to provide thrust to the push block, pushing the positioning sleeve on the guide groove into the end of the first pipe, and the extended end of the cylinder is reset and contracted, so that the positioning sleeve is separated from the guide groove;

[0018] Step three, continue to move the second pipe through the roller conveyor in conjunction with the drive roller, so that the port of the second pipe is also engaged with the positioning sleeve, and use the two positioning blocks on the outer wall of the positioning sleeve to position the distance between the first pipe and the second pipe to ensure the welding efficiency of the first pipe and the second pipe, and then move the surrounding welding tool downward to allow the surrounding welding tool to weld the first pipe and the second pipe. At this time, the gap between the first pipe and the second pipe is blocked by the positioning sleeve to prevent the molten metal from flowing into the interior of the first pipe and the second pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the extended end of the cylinder is extended. When the extended end of the cylinder is extended to a set length, the top of the guide groove contacts the baffle. At this time, the inner wall of the guide groove cooperates with the inner wall of the first pipe, and the extended end of the cylinder continues to extend. The distance between the guide groove and the extended end of the cylinder is shortened. The connecting frame cooperates with the first pushing wheel to provide thrust to the L-shaped frame to cause it to flip, thereby cooperating with the second pushing wheel to provide thrust to the pushing block, pushing the positioning sleeve on the guide groove into the end of the first pipe, and the extended end of the cylinder is reset and contracted to separate the positioning sleeve from the guide groove. The roller conveyor cooperates with the transmission roller to continue moving the second pipe, so that the end of the second pipe is also connected with the positioning sleeve. The distance between the first pipe and the second pipe is positioned by two positioning blocks on the outer wall of the positioning sleeve, thereby ensuring the welding efficiency of the first pipe and the second pipe.

[0021] 2. In the present invention, after the first pipe and the second pipe are connected by the positioning sleeve, the surrounding welding tool is moved downward to weld the first pipe and the second pipe. At this time, the gap between the first pipe and the second pipe is blocked by the positioning sleeve to prevent the molten metal from flowing into the interior of the first pipe and the second pipe, thereby avoiding affecting the smoothness of the inner walls of the first pipe and the second pipe, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a front view of the welding mechanism of the present invention;

[0025] Figure 3 It is a front view of the pushing component in the present invention;

[0026] Figure 4 A three-dimensional diagram of the guide groove of the present invention;

[0027] Figure 5 A three-dimensional diagram of the positioning sleeve of the present invention;

[0028] Figure 6 It is a front view of the flame welding gun in the surround welding tool in the present invention.

[0029] Figure numerals: 1. Surround welding tooling; 2. Threaded rod; 3. Conveyor frame; 4. Drive roller; 5. Support frame; 6. Roller conveyor; 7. Welding frame; 8. Welding mechanism; 81. Baffle; 82. Positioning sleeve; 83. Guide groove; 84. Cylinder; 85. Limiting sleeve; 86. Pushing assembly; 87. Pushing block; 88. Slide; 89. Positioning block; 861. Second pushing wheel; 862. L-shaped connecting block; 863. Connecting frame; 864. First pushing wheel; 865. Counterweight block; 866. L-shaped frame. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0031] like Figure 1-6 As shown, the circumferential welding equipment for pipeline processing proposed in this embodiment includes a support frame 5, a roller conveyor 6 is installed on one side above the support frame 5, a second pipeline is arranged above the roller conveyor 6, a welding frame 7 is fixedly arranged in the middle above the support frame 5, a conveying frame 3 is fixedly arranged on the other side above the support frame 5, a first pipeline is slidingly arranged inside the conveying frame 3, a circumferential welding tool 1 for circumferential welding of the welding point between the first pipeline and the second pipeline is provided on the top of the welding frame 7, and a welding mechanism 8 for auxiliary welding of the welding point between the first pipeline and the second pipeline is provided below the circumferential welding tool 1; the circumferential welding tool 1 includes a telescopic rod, a flame welding gun is fixedly provided at the bottom end of the telescopic rod, and a circumferential flame nozzle is fixedly installed at the output end of the flame welding gun, and the circumferential flame nozzle is used to perform circumferential welding on the welding point between the first pipeline and the second pipeline.

[0032] The welding mechanism 8 includes a cylinder 84 fixedly inserted on the outer wall of the top of the support frame 5, a pushing component 86 is provided on the bottom side wall of the output end of the cylinder 84, a limiting sleeve 85 is provided on the top side wall of the output end of the cylinder 84, a guide groove 83 is fixedly provided above the limiting sleeve 85, a thrust spring is elastically provided between the top of the cylinder 84 and the bottom of the guide groove 83, a slide 88 is provided on the inner wall of the guide groove 83, a push block 87 is slidably provided on one side of the slide 88 close to the roller conveyor 6, and a positioning sleeve 82 is slidably provided on the other side of the slide 88. The welding frame 7 is located in the guide groove 83. A baffle 81 is fixedly mounted on the outer wall above the groove 83; by rotating the threaded rod 2, the pressing block at its bottom fixes the first pipe, and then one end of the second pipe is conveyed to the transmission roller 4 via the roller conveyor 6. At this time, the cylinder 84 is turned on, causing the protruding end of the cylinder 84 to extend, and the thrust spring pushes the guide groove 83 upward, causing the guide groove 83 to slide upward under the guidance of the guide rail; when the protruding end of the cylinder 84 extends to the set length, the top of the guide groove 83 contacts the baffle 81, and the inner wall of the guide groove 83 cooperates with the inner wall of the first pipe;

[0033] like Figure 2 、 5 As shown, positioning blocks 89 are fixedly mounted on both ends of the positioning sleeve 82, and the lower positioning block 89 is slidably engaged with the slideway 88. Specifically, the thickness of the positioning block 89 in the longitudinal direction is less than the wall thickness of the first pipe and the second pipe.

[0034] like Figure 1-2 As shown, two guide rails are fixedly mounted on the outer wall of the welding frame 7 below the baffle 81 , and the guide groove 83 is in sliding engagement with the two guide rails.

[0035] like Figure 1-3 As shown, the pushing assembly 86 includes a connecting frame 863 fixedly connected to the output end of the cylinder 84, a first pushing wheel 864 is rotatably provided above the connecting frame 863, and an L-shaped connecting block 862 is fixedly installed on one side of the bottom of the guide groove 83 near the connecting frame 863, and one end of the L-shaped connecting block 862 is rotatably connected to the L-shaped frame 866 via a latch;

[0036] The outer wall below the L-shaped frame 866 is in transmission cooperation with the first pushing wheel 864, and a counterweight block 865 is fixedly installed on the outer wall in the middle and lower part of the L-shaped frame 866. The top of the L-shaped frame 866 is rotatably provided with a second pushing wheel 861, and the second pushing wheel 861 is in transmission cooperation with the side wall of the pushing block 87; the counterweight block 865 can assist the L-shaped frame 866 in resetting; the protruding end of the cylinder 84 continues to extend, the thrust spring shortens, the position of the guide groove 83 does not change, and the distance between the guide groove 83 and the protruding end of the cylinder 84 is shortened. At this time, the connecting frame 863 cooperates with the first pushing wheel 864 to provide a thrust to the L-shaped frame 866, causing it to flip, thereby cooperating with the second pushing wheel 861 to provide a thrust to the pushing block 87, pushing the positioning sleeve 82 located on the guide groove 83 into the first pipe In the port, the extended end of the cylinder 84 is reset and contracted, so that the positioning sleeve 82 is separated from the guide groove 83; the roller conveyor 6 cooperates with the driving roller 4 to continue to move the second pipe, so that the port of the second pipe is also connected with the positioning sleeve 82, and the distance between the first pipe and the second pipe is positioned by the two positioning blocks 89 on the outer wall of the positioning sleeve 82 to ensure the welding efficiency of the first pipe and the second pipe, and then the surrounding welding tool 1 is moved downward to weld the first pipe and the second pipe. At this time, the gap between the first pipe and the second pipe is blocked by the positioning sleeve 82 to prevent the molten metal from flowing into the interior of the first pipe and the second pipe, avoiding it from affecting the smoothness of the inner wall of the first pipe and the second pipe, thereby ensuring product quality.

[0037] like Figure 1 As shown, a drive roller 4 is fixedly mounted on the top of the support frame 5 near the roller conveyor 6. The drive roller 4 surrounds the welding fixture 1 and is located above the first and second pipes. The drive roller 4 not only provides transportation for the first and second pipes, but also prevents the first and second pipes from bending due to gravity.

[0038] like Figure 1 As shown, the upper part of the conveying frame 3 is threadedly connected to a threaded rod 2, and the lower part of the threaded rod 2 is rotatably connected to a pressing block through a bearing, and the pressing block is in contact with the first pipe. Example 2:

[0039] The welding method based on a circumferential welding device for pipeline processing comprises the following steps:

[0040] Step 1: First, the threaded rod 2 is rotated so that the pressing block at its bottom fixes the first pipe. Then, one end of the second pipe is conveyed to the transmission roller 4 via the roller conveyor 6. At this time, the cylinder 84 is turned on, so that the protruding end of the cylinder 84 extends, and the thrust spring pushes the guide groove 83 upward, causing the guide groove 83 to slide upward under the guidance of the guide rail.

[0041] Step 2: When the extended end of the cylinder 84 is extended to a set length, the top of the guide groove 83 contacts the baffle 81, and the inner wall of the guide groove 83 and the inner wall of the first pipe cooperate with each other;

[0042] The extended end of the cylinder 84 continues to extend, the thrust spring shortens, the position of the guide groove 83 does not change, and the distance between the guide groove 83 and the extended end of the cylinder 84 shortens. At this time, the connecting frame 863 cooperates with the first pushing wheel 864 to provide thrust to the L-shaped frame 866, causing it to flip, thereby cooperating with the second pushing wheel 861 to provide thrust to the pushing block 87, pushing the positioning sleeve 82 located on the guide groove 83 into the end of the first pipe. The extended end of the cylinder 84 returns to its original position and contracts, causing the positioning sleeve 82 to separate from the guide groove 83.

[0043] Step three: Continue to move the second pipe through the roller conveyor 6 in cooperation with the drive roller 4, so that the end of the second pipe is also engaged with the positioning sleeve 82, and the distance between the first pipe and the second pipe is positioned by the two positioning blocks 89 on the outer wall of the positioning sleeve 82 to ensure the welding efficiency of the first pipe and the second pipe, and then move the surround welding tool 1 downward to allow the surround welding tool 1 to weld the first pipe and the second pipe. At this time, the gap between the first pipe and the second pipe is blocked by the positioning sleeve 82 to prevent the molten metal from flowing into the interior of the first pipe and the second pipe, avoiding it from affecting the smoothness of the inner walls of the first pipe and the second pipe, thereby ensuring product quality.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wraparound welding device for pipe processing, comprising a support frame (5), characterized in that: A roller conveyor (6) is installed on one side above the support frame (5), a second pipeline is provided above the roller conveyor (6), a welding frame (7) is fixedly provided in the middle of the support frame (5), a conveying frame (3) is fixedly provided on the other side above the support frame (5), a first pipeline is slidably provided inside the conveying frame (3), a surrounding welding tool (1) is provided on the top of the welding frame (7), and a welding mechanism (8) for auxiliary welding of the first pipeline and the second pipeline is provided below the surrounding welding tool (1); The welding mechanism (8) includes a cylinder (84) fixedly inserted on the outer wall of the top of the support frame (5), a pushing assembly (86) is provided on the bottom side wall of the output end of the cylinder (84), a limiting sleeve (85) is sleeved on the top side wall of the output end of the cylinder (84), a guide groove (83) is fixedly provided above the limiting sleeve (85), a thrust spring is elastically provided between the top of the cylinder (84) and the bottom of the guide groove (83), a slideway (88) is provided on the inner wall of the guide groove (83), a push block (87) is slidably provided on one side of the slideway (88) close to the roller conveyor (6), a positioning sleeve (82) is slidably provided on the other side of the slideway (88), and a baffle (81) is fixedly installed on the outer wall of the welding frame (7) located above the guide groove (83); The pushing assembly (86) includes a connecting frame (863) fixedly connected to the output end of the cylinder (84), a first pushing wheel (864) is rotatably provided on the top of the connecting frame (863), an L-shaped connecting block (862) is fixedly installed on the side of the bottom of the guide groove (83) close to the connecting frame (863), and one end of the L-shaped connecting block (862) is rotatably connected to the L-shaped frame (866) through a latch; the outer wall below the L-shaped frame (866) is transmission-coordinated with the first pushing wheel (864), a counterweight (865) is fixedly installed on the outer wall at the middle and lower part of the L-shaped frame (866), and a second pushing wheel (861) is rotatably provided on the top of the L-shaped frame (866), and the second pushing wheel (861) is transmission-coordinated with the side wall of the pushing block (87).

2. The circumferential welding equipment for pipeline processing according to claim 1, characterized in that: Positioning blocks (89) are fixedly mounted on both upper and lower ends of the positioning sleeve (82), and a lower positioning block (89) is slidably engaged with the slideway (88).

3. The circumferential welding equipment for pipeline processing according to claim 1, characterized in that: The welding frame (7) is located on an outer wall below the baffle (81), and two guide rails are fixedly mounted thereon. The guide groove (83) is in sliding engagement with the two guide rails.

4. The circumferential welding equipment for pipeline processing according to claim 1, characterized in that: A transmission roller (4) is fixedly mounted on one side of the top of the support frame (5) close to the roller conveyor (6), and the surrounding welding tool (1) is located above the first pipe and the second pipe.

5. The circumferential welding equipment for pipeline processing according to claim 1, characterized in that: The upper portion of the conveying frame (3) is threadedly connected to a threaded rod (2), and the lower portion of the threaded rod (2) is rotatably connected to a pressing block via a bearing, and the pressing block is in contact with the first pipe.

6. A welding method based on a circumferential welding device for pipeline processing, using the circumferential welding device for pipeline processing according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: First, the threaded rod (2) is rotated so that the pressing block at the bottom thereof fixes the first pipe, and then one end of the second pipe is conveyed to the transmission roller (4) via the roller conveyor (6). At this time, the cylinder (84) is turned on so that the protruding end of the cylinder (84) is extended, and the thrust spring pushes the guide groove (83) upward, so that the guide groove (83) slides upward under the guidance of the guide rail; Step 2: When the extended end of the cylinder (84) is extended to a set length, the top of the guide groove (83) contacts the baffle (81), and the inner wall of the guide groove (83) and the inner wall of the first pipe cooperate with each other; The extended end of the cylinder (84) continues to extend, the thrust spring shortens, the position of the guide groove (83) does not change, and the distance between the guide groove (83) and the extended end of the cylinder (84) shortens. At this time, the connecting frame (863) cooperates with the first pushing wheel (864) to provide a thrust to the L-shaped frame (866), causing it to flip, thereby cooperating with the second pushing wheel (861) to provide a thrust to the push block (87), pushing the positioning sleeve (82) located on the guide groove (83) into the port of the first pipe, and the extended end of the cylinder (84) is reset and contracted, so that the positioning sleeve (82) is separated from the guide groove (83); In step three, the second pipe is continued to be moved by the roller conveyor (6) in cooperation with the driving roller (4), so that the end of the second pipe is also engaged with the positioning sleeve (82), and the distance between the first pipe and the second pipe is positioned by two positioning blocks (89) on the outer wall of the positioning sleeve (82) to ensure the welding efficiency of the first pipe and the second pipe, and then the surrounding welding tool (1) is moved downward to allow the surrounding welding tool (1) to weld the first pipe and the second pipe. At this time, the gap between the first pipe and the second pipe is blocked by the positioning sleeve (82) to prevent the molten metal from flowing into the interior of the first pipe and the second pipe.

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