Pipe fitting automatic welding device with welding spatter blocking structure

Abstract

This invention relates to the field of pipe welding technology and discloses an automatic pipe welding device with a welding spatter blocking structure. The device includes an operating table, with a vertically upward mounting plate fixedly connected to one side. A first driving component and a second driving component with its transmission part are horizontally fixedly mounted on the top of the mounting plate. A blocking plate is inserted into the edge of the operating table to block spatter. A clamping device is fixedly mounted on the transmission part of the second driving component. This invention, by setting up a clamping device, which uses two semi-circular blocks spliced ​​together to form a ring-shaped limiting structure, combined with the elastic component and U-shaped groove in the fitting mechanism, can effectively accommodate functional components on the outer wall of the pipe. This avoids the problem of unstable clamping caused by the protruding structure intervening in the clamping working area in traditional clamping methods, achieving reliable circumferential limiting and axial locking of pipes with radial protrusions.

Description

Technical Field

[0001] This invention belongs to the field of pipeline welding technology, and specifically relates to an automatic welding device for pipe fittings with a welding spatter blocking structure. Background Technology

[0002] When performing butt welding operations on bends and pipe joints in hydraulic oil pipes, existing automatic pipe welding devices typically employ two sets of independent clamping fixtures to clamp and fix the bends and pipe joints respectively. For bends, lateral clamping is often used to position and fix the pipe body. At the same time, in order to ensure the coaxiality of the welding, traditional clamping fixtures need to clamp the straight pipe part of the bend that is connected to the pipe joint, relying on the fit between the clamping plate and the straight pipe part to achieve coaxial fixation.

[0003] In the actual forming structure of hydraulic oil pipelines, two functional components, a pressure testing connector and a bypass interface, are pre-assembled and welded onto the side wall of the pipeline. This creates a radial protrusion structure on the outer wall of the pipeline. Especially on bends, these functional components need to be placed on the straight pipe to ensure stability. However, in bend structures, the straight pipe section is relatively short, limiting the clamping area. Furthermore, depending on different assembly requirements, these two functional components are distributed in different directions. When the angle between the two functional components is close to perpendicular, a split-type clamp can be used to fix them. However, when the angle between the two functional components is between 15 and 80 degrees, when using traditional clamping fixtures to clamp and fix this type of pipeline with radial protrusions, the protrusion structure will interfere with the clamping working area of ​​the clamping plate. This prevents the clamping plate from effectively contacting the cylindrical outer wall of the pipeline. In this case, the clamping force of the fixture acts only on the protrusion structure of the pipeline, not the pipeline body, resulting in an assembly gap between the clamping plate and the pipeline body. This makes it impossible to reliably limit the circumferential movement and lock the pipeline axially. Summary of the Invention

[0004] This invention provides an automatic welding device for pipe fittings with a welding spatter blocking structure, which solves the technical problem in related technologies that the clamping of pipes with functional components is unstable and cannot be reliably limited when the protruding structure intervenes in the clamping area during welding.

[0005] This invention provides an automatic pipe welding device with a welding spatter blocking structure, including an operating table. A vertically upward mounting plate is fixedly connected to one side of the operating table. A first driving component and a second driving component with a transmission part of the first driving component are horizontally fixedly mounted on the top of the mounting plate. A blocking plate is inserted into the edge of the operating table to block spatter. A clamping device is fixedly mounted on the transmission part of the second driving component to clamp the pipe. A three-jaw chuck is fixedly mounted on the top of the operating table to clamp the pipe joint. During welding, the first driving component pushes the second driving component... The component moves horizontally to push the clamping device and the three-jaw chuck to form a coaxial state. The first drive component is used to push the clamping device to move vertically, so that the pipe end face is close to the pipe joint end face. An electric rotary table is fixedly installed inside the operating table. The electric rotary table is coaxially arranged with the three-jaw chuck. A fourth drive component is fixedly installed on the upper surface of the rotating part of the electric rotary table. The transmission part of the fourth drive component is fixedly connected to the welding torch. The fourth drive component is used to drive the welding torch to move radially along the pipe. The electric rotary table is used to drive the fourth drive component to move circumferentially along the pipe. The welding torch is used to weld the pipe and the pipe joint together.

[0006] In a preferred embodiment, the clamping device includes a positioning block and two semicircular blocks. The positioning block is connected to the transmission part of the second driving component. The two semicircular blocks are disposed opposite to each other on the inner side of the positioning block. The two semicircular blocks are spliced ​​together to form an annular limiting structure for limiting the axial direction of the pipe.

[0007] In a preferred embodiment, a linear telescopic component is fixedly installed at the end of the positioning block, and a transmission rod is fixedly connected to the output end of the linear telescopic component. The transmission rod is slidably disposed inside the positioning block, and the end of the transmission rod is fixedly connected to a semicircular block. The linear telescopic component is used to push the transmission rod and the semicircular block. A fitting mechanism is slidably disposed on the inner arc surface of the semicircular block, and the fitting mechanism is used to contact the pipe.

[0008] In a preferred embodiment, the bonding mechanism includes a bonding plate, and two support structures are provided on the side of the bonding plate facing the linear telescopic component. The two support structures are distributed vertically and are both used to support the bonding plate. The support structure includes a fixed plate integrally formed on the bonding plate. An elastic connecting component is fixedly connected to the lower surface of the fixed plate. A movable plate is fixedly connected to the end of the elastic connecting component. The movable plate is slidably connected to the bonding plate.

[0009] In a preferred embodiment, an elastic component is fixedly connected to the side of the bonding plate facing the pipe. Both the interior of the elastic component and the interior of the bonding plate are provided with U-shaped grooves, and the U-shaped grooves extend upward through the bonding plate and the elastic component. The U-shaped grooves are used to accommodate functional components on the outer wall of the pipe.

[0010] In a preferred embodiment, the inner side of the semicircular block has two cavities for accommodating the support structure. The two cavities are distributed vertically and a partition plate is formed between them. The two cavities are connected at their bisecting points, and the connecting part is located at the edge of the partition plate. The movable plates in the two support structures are slidably disposed at the bottom of the two cavities.

[0011] In a preferred embodiment, a limiting mechanism is movably provided on the inner side of the semicircular block. The limiting mechanism includes a transmission plate and a limiting toothed plate. Two extension plates are integrally formed on the side of the bonding plate facing the cavity. The two extension plates are located between two support structures and are located at the top of the lower cavity. The transmission plate is located between the two extension plates and is used to determine the height of the extension plates. The shape of the extension plates is adapted to the shape of the transmission plate.

[0012] In a preferred embodiment, a connecting rod is integrally formed at the bisecting point of the edge of the transmission plate. A movable rod is slidably arranged inside the transmission rod. The end of the movable rod is provided with an inclined surface whose shape matches the wedge block, and the upper surface of the movable rod is higher than the lower surface of the wedge block. A third driving component is fixedly installed at the bottom of the transmission rod. A strip hole is opened at the bottom of the transmission rod. The bottom of the movable rod passes through the strip hole and is fixedly connected to the transmission part of the third driving component. Return springs are fixedly connected to the lower surfaces on both sides of the connecting rod. A guide rod is fixedly installed on the side wall of the cavity. The wedge block is sleeved on the outer wall of the guide rod. The bottom of the return spring is fixedly connected to the bottom of the cavity. The return spring is used to support the wedge block.

[0013] In a preferred embodiment, the top of the bonding plate is integrally formed with an extension rod, and the upper surface of the topmost fixing plate is provided with a toothed groove. A limiting toothed plate is provided on the inner top of the upper cavity. The fixing plate with the toothed groove engages with the lower surface of the limiting toothed plate under the support of the elastic connecting member. The extension rod, as an extension structure of the bonding plate, is used to be pressed down and drive the bonding plate to disengage the fixing plate from the limiting toothed plate.

[0014] In a preferred embodiment, a wedge block is fixedly connected to the top of the connecting rod. The wedge block is located at the edge of the protruding tooth on the lower surface of the limiting tooth plate, and the top of the wedge block is fixedly connected to the limiting tooth plate. When the transmission plate moves, the limiting tooth plate is driven by the connecting rod to ensure that the limiting tooth plate still meshes with the tooth groove on the upper surface of the fixed plate during the downward movement of the fixed plate.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The present invention provides a clamping device, which consists of two semi-circular blocks joined together to form a ring-shaped limiting structure. Combined with the elastic component and U-shaped groove in the fitting mechanism, it can effectively accommodate functional components on the outer wall of the pipe. This avoids the problem of unstable clamping caused by the protruding structure intervening in the clamping working area in traditional clamping methods, and achieves reliable circumferential limiting and axial locking of pipes with radial protrusions.

[0017] 2. This invention, by setting a limiting mechanism, uses a third driving component to drive a movable rod to push a wedge block downwards, which in turn drives a bonding plate to move slightly downwards via a transmission plate and an extension plate, achieving precise bonding and adjustment of the pipe end face. Compared with the overall movement of the second driving component, the movement range is more accurate, ensuring a tight fit between the pipe end face and the pipe joint end face, and improving welding quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 This is a front view of the clamping device, electric rotary table, and three-jaw chuck of the present invention.

[0020] Figure 3 This is a top view of the clamping device of the present invention.

[0021] Figure 4 This is a schematic diagram of the clamping process of the clamping device of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the clamping device of the present invention clamping the pipe.

[0023] Figure 6 This is a three-dimensional structural diagram of the inner side of the semicircular block and the bonding mechanism of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the bonding mechanism of the present invention.

[0025] Figure 8 This is a structural breakdown diagram of the semicircular block and its internal structure, and the transmission rod and its internal structure of the present invention.

[0026] Figure 9 This is a schematic diagram of the semi-circular block semi-section structure of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the bonding mechanism and the limiting mechanism of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the bonding mechanism of the present invention.

[0029] In the diagram: 1. Operating table; 2. Blocking plate; 3. Mounting connecting plate; 4. First driving component; 5. Second driving component; 6. Clamping device; 61. Positioning block; 62. Linear telescopic component; 63. Semicircular block; 631. Divider plate; 632. Cavity; 633. Guide rod; 64. Fitting mechanism; 641. Fitting plate; 642. Extension rod; 643. U-shaped groove; 644. Elastic component; 645. Fixed plate; 646. Movable plate; 647. Elastic connecting component; 648. Extension plate; 65. Transmission rod; 651. Movable rod; 652. Third driving component; 653. Strip hole; 66. Limiting mechanism; 661. Transmission plate; 662. Limiting toothed plate; 663. Connecting rod; 664. Wedge block; 665. Return spring; 7. Fourth driving component; 8. Electric rotary table; 9. Three-jaw chuck; 10. Welding torch. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, an automatic pipe welding device with a welding spatter blocking structure includes an operating table 1. A vertically upward mounting plate 3 is fixedly connected to one side of the operating table 1. A first driving component 4 and a second driving component 5 of the transmission part of the first driving component 4 are horizontally fixedly installed on the top of the mounting plate 3. A blocking plate 2 is inserted into the edge of the operating table 1 to block spatter. A clamping device 6 is fixedly installed on the transmission part of the second driving component 5 to clamp the pipe.

[0033] A three-jaw chuck 9 is fixedly installed on the top of the operating table 1. The three-jaw chuck 9 is used to clamp the pipe joint. During welding, the first driving component 4 pushes the second driving component 5 to move horizontally, which is used to push the clamping device 6 and the three-jaw chuck 9 to form a coaxial state. The first driving component 4 is used to push the clamping device 6 to move vertically, so that the pipe end face is close to the pipe joint end face.

[0034] An electric rotary table 8 is fixedly installed inside the operating table 1. The electric rotary table 8 is coaxially arranged with the three-jaw chuck 9. A fourth drive component 7 is fixedly installed on the upper surface of the rotating part of the electric rotary table 8. A welding torch 10 is fixedly connected to the transmission part of the fourth drive component 7. The fourth drive component 7 is used to drive the welding torch 10 to move radially along the pipeline. The electric rotary table 8 is used to drive the fourth drive component 7 to make circumferential motion along the pipeline. The welding torch 10 is used to weld the pipeline and the pipeline joint together.

[0035] It should be noted that the operating table 1 is used to determine the position of each component. The pipe connector is inserted into the center of the three-jaw chuck 9 and fixed. Then, the first drive component 4 moves the clamping device 6 to a position coaxial with the three-jaw chuck 9. A robotic arm-like conveying device is used to move the pipe to be welded into the clamping device 6 and fix it. Then, the second drive component 5 moves the pipe downward so that the end face of the pipe is close to the end face of the pipe connector. After fixing the pipe and pipe connector, the fourth drive component 7 adjusts the position of the welding torch 10, moving the output end of the welding torch 10 to near the welding area between the pipe and the pipe connector. The welding torch 10 is then started to weld. The first drive component 4, the second drive component 5, and the fourth drive component 7 are all lead screws and nuts. In the welding process, the electric rotary table 8 drives the fourth drive component 7 to move in a circular motion around the pipe. During this process, the welding torch 10 can weld the contact part of the pipe and the pipe joint together, completing the assembly of the pipe and the pipe joint. An annular gap is provided between the electric rotary table 8 and the three-jaw chuck 9 to accommodate the wiring that the welding torch 10 needs to connect. When the electric rotary table 8 drives the fourth drive component 7, the wiring will not be blocked by the operating table 1. The baffle plate 2, which is set at the edge of the operating table 1, is inserted into the support base set at the bottom of the operating table 1 and is higher than the contact end face of the pipe and the pipe joint. Therefore, the spatter generated during the welding process can be blocked by the baffle plate 2 and will not splash to the surroundings.

[0036] Example 2

[0037] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the clamping device 6 includes a positioning block 61 and two semicircular blocks 63. The positioning block 61 is connected to the transmission part of the second driving component 5. The two semicircular blocks 63 are arranged opposite each other on the inner side of the positioning block 61. The two semicircular blocks 63 are spliced ​​together to form an annular limiting structure, which is used to limit the axial direction of the pipe. A linear telescopic component 62 is fixedly installed at the end of the positioning block 61. A transmission rod 65 is fixedly connected to the output end of the linear telescopic component 62. The transmission rod 65 is slidably arranged inside the positioning block 61. The end of the transmission rod 65 is fixedly connected to the semicircular block 63. The linear telescopic component 62 is used to push the transmission rod 65 and the semicircular block 63. A contacting mechanism 64 is slidably arranged on the inner arc surface of the semicircular block 63. The contacting mechanism 64 is used to contact the pipe.

[0038] It should be noted that the positioning block 61 is connected to the second driving component 5. The second driving component 5 adjusts the height of the positioning block 61. During the lifting and lowering of the positioning block 61, the linear telescopic component 62 is driven synchronously. The linear telescopic component 62 is specifically an electric cylinder. After the pipe is sent to the inside of the clamping device 6, it is located between the two semicircular blocks 63. When clamping the pipe, the linear telescopic component 62 pushes the semicircular blocks 63 closer to each other through the transmission rod 65 until the end faces of the two semicircular blocks 63 are in contact with each other. The transmission rod 65 passes through the positioning block 61, and a strip groove is provided on the surface of the transmission rod 65 to form a sliding fit with the positioning block 61. It can also effectively prevent the transmission rod 65 from shaking during movement. During the process of the two semicircular blocks 63 getting closer to each other, the contacting mechanism 64 will contact the outer wall of the pipe. The contacting mechanism 64 is located on the inner arc surface of the semicircular block 63 and is used to separate the semicircular block 63 from the pipe to ensure that the outer wall of the pipe is not damaged during the clamping process.

[0039] Example 3

[0040] like Figure 6 , Figure 7 , Figure 9 , Figure 10 and Figure 11As shown, the bonding mechanism 64 includes a bonding plate 641. Two support structures are provided on the side of the bonding plate 641 facing the linear telescopic component 62. These two support structures are distributed vertically and both support the bonding plate 641. Each support structure includes a fixed plate 645 integrally formed on the bonding plate 641. An elastic connecting component 647 is fixedly connected to the lower surface of the fixed plate 645. A movable plate 646 is fixedly connected to the end of the elastic connecting component 647. The movable plate 646 is slidably connected to the bonding plate 641. An elastic component 644 is fixedly connected to the side of the bonding plate 641 facing the pipe. The inner surface of the elastic component 644... Both the inner part and the inner part of the bonding plate 641 are provided with U-shaped grooves 643, and the U-shaped grooves 643 extend upward through the bonding plate 641 and the elastic component 644. The U-shaped grooves 643 are used to accommodate functional components on the outer wall of the pipe. Two cavities 632 are provided on the inner side of the semi-circular block 63. The cavities 632 are used to accommodate the support structure. The two cavities 632 are distributed vertically, and a partition plate 631 is formed between the two cavities 632. The two cavities 632 are connected at their bisection points, and the connecting part is located at the edge of the partition plate 631. The movable plates 646 in the two support structures are slidably disposed at the bottom of the two cavities 632.

[0041] It should be noted that the bonding mechanism 64 is used both to connect pipes and to protect protruding structures on the pipes. Before use, the position of the bonding mechanism 64 on the inner arc surface of the semicircular block 63 should be adjusted according to the angle of the protruding structure on the pipe. The cavity 632 inside the semicircular block 63 is used to accommodate the bonding mechanism 64. The bonding plate 641 is provided with a fixed plate 645 and a movable plate 646 on the side facing the semicircular block 63. The fixed plate 645 is located at the upper part of the cavity 632, and the movable plate 646 is located at the lower part of the cavity 632. The lower part of the two are connected by an elastic connecting member 647, forming a telescopic support structure. The elastic connecting member 647 is specifically a spring telescopic rod, with the spring located outside the telescopic rod. The entire support structure is located in the cavity 632, which determines the position of the bonding plate 641. The cavity 632 also provides movement space for the bonding mechanism 64, facilitating its movement. The partition plate 631 formed between the two cavities 632 is used to support the upper support structure, and the edge of the partition plate 631... A raised strip structure is provided to hook the movable plate 646, preventing the bonding plate 641 from detaching from the semi-circular block 63. The bonding plate 641 is made of a rigid material, and the elastic component 644 is made of rubber with a certain degree of hardness. The two are fixedly connected, which ensures a certain structural strength when bonded to the pipe, while avoiding damage to the pipe caused by excessively hard materials during clamping. Furthermore, U-shaped grooves 643 are provided on the inner side of both the bonding plate 641 and the elastic component 644 to accommodate protrusions on the outer wall of the pipe. The structure is designed to avoid damage to the protruding structure during clamping while ensuring clamping force. The U-shaped groove 643 extends upward through the bonding plate 641 and the elastic component 644. When clamping the pipe, the semicircular blocks 63 can be pushed closer together in advance, but with a certain gap. Then, the pipe is inserted vertically downward between the two semicircular blocks 63. At this time, the protruding structure can enter the U-shaped groove 643. This method makes it easy to observe the position of the protruding structure and the bonding mechanism 64, thereby further reducing the probability of damaging the protruding structure.

[0042] Example 4

[0043] like Figure 8 , Figure 9 and Figure 10As shown, a limiting mechanism 66 is movably provided on the inner side of the semicircular block 63. The limiting mechanism 66 includes a transmission plate 661 and a limiting toothed plate 662. Two extension plates 648 are integrally formed on the side of the fitting plate 641 facing the cavity 632. The two extension plates 648 are located between the two support structures and are located at the top of the lower cavity 632. The transmission plate 661 is located between the two extension plates 648 and is used to determine the height of the extension plates 648. The shape of the extension plates 648 is adapted to the shape of the transmission plate 661. A connecting rod 663 is integrally formed at the bisecting point of the edge of the transmission plate 661. A movable rod 651 is slidably provided inside the transmission rod 65. The end is provided with an inclined surface whose shape matches the wedge block 664, and the upper surface of the movable rod 651 is higher than the lower surface of the wedge block 664. The bottom of the transmission rod 65 is fixedly installed with a third driving component 652. The bottom of the transmission rod 65 has a strip hole 653. The bottom of the movable rod 651 passes through the strip hole 653 and is fixedly connected to the transmission part of the third driving component 652. The lower surfaces on both sides of the connecting rod 663 are fixedly connected with return springs 665. The side wall of the cavity 632 is fixedly installed with a guide rod 633. The wedge block 664 is sleeved on the outer wall of the guide rod 633. The bottom of the return spring 665 is fixedly connected to the bottom of the cavity 632. The return spring 665 is used to support the wedge block 664.

[0044] It should be noted that the limiting mechanism 66 is used to adjust the height of the bonding mechanism 64 and limit its position. During clamping, the limiting mechanism 66 can drive the bonding mechanism 64 downward. When the pipe is clamped, the bonding mechanism 64 can be pushed downward a small distance. Compared with the second driving component 5, the overall movement range is more precise, thus ensuring that the end face of the pipe and the end face of the pipe joint can be tightly fitted. The transmission plate 661 is set between the two extension plates 648, and a wedge block 664 is also set at the edge of the transmission plate 661. When it is necessary to move the bonding mechanism 64 downward, the third driving component 652 set at the bottom of the transmission rod 65 is activated to push the movable rod 651. The movable rod 651 is set inside the transmission rod 65, and the movable rod 651 is also aligned with the connecting part between the two cavities 632. The third driving component 652 is specifically a wire In the lever-nut device, the third drive component 652 pushes the movable rod 651 into the cavity 632, and the inclined surface at its end contacts the wedge block 664. During its subsequent movement, the horizontal thrust is converted into a downward thrust that pushes the wedge block 664. The strip hole 653 slides with the movable rod 651, determining the movement path of the movable rod 651. When the wedge block 664 moves downward, it pushes the extension plate 648 through the transmission plate 661, thereby pushing the bonding plate 641 downward, thus causing the pipe to move downward slightly. During the movement of the wedge block 664, it compresses the return spring 665 set on the guide rod 633. The guide rod 633 is set on the inner wall of the cavity 632 to determine the movement path of the wedge block 664, while the return spring 665 resets the wedge block 664 when the movable rod 651 leaves the wedge block 664.

[0045] Example 5

[0046] like Figure 7 , Figure 9 , Figure 10 and Figure 11 As shown, the top of the bonding plate 641 is integrally formed with an extension rod 642. The upper surface of the topmost fixing plate 645 has a toothed groove. The inner top of the upper cavity 632 is provided with a limiting toothed plate 662. The fixing plate 645 with the toothed groove engages with the lower surface of the limiting toothed plate 662 under the support of the elastic connecting member 647. The extension rod 642, as an extension structure of the bonding plate 641, is used to be pressed downward and drive the bonding plate 641 to fix the plate. 645 disengages from the limiting tooth plate 662. A wedge block 664 is fixedly connected to the top of the connecting rod 663. The wedge block 664 is located at the edge of the protruding tooth on the lower surface of the limiting tooth plate 662, and the top of the wedge block 664 is fixedly connected to the limiting tooth plate 662. When the transmission plate 661 moves, it drives the limiting tooth plate 662 through the connecting rod 663. This is used to ensure that the limiting tooth plate 662 still meshes with the tooth groove on the upper surface of the fixed plate 645 during the downward movement of the fixed plate 645.

[0047] It should be noted that the uppermost fixing plate 645 on the side of the bonding plate 641 has a toothed groove on its upper surface that meshes with the limiting toothed plate 662 to limit the position of the bonding plate 641. The extension rod 642 on the bonding plate 641 extends upward beyond the upper surface of the semicircular block 63. When it is necessary to adjust the position of the bonding mechanism 64 on the inner arc surface of the semicircular block 63, pressing the extension rod 642 causes the bonding plate 641 and the fixing plate 645 on one side to move downward, so that the fixing plate 645 with the toothed groove separates from the limiting toothed plate 662. At this time, the limiting of the toothed groove is lost, and the bonding plate 641 can be moved along the direction of the cavity 632, thereby adjusting the position of the bonding plate 641 on the inner arc surface of the semicircular block 63 to adapt to the protruding structures at different positions on the pipeline.

[0048] Working principle of the invention:

[0049] First, the workpiece is positioned and prepared for loading. The pipe connector is inserted into the center of the three-jaw chuck 9 on the top of the operating table 1 and locked in place. Then, the first drive component 4 is activated to push the clamping device 6 to move horizontally so that it is coaxial with the three-jaw chuck 9. Next, the pipe to be welded is sent between the two semicircular blocks 63 of the clamping device 6 through an external robotic arm-like conveying device to prepare for subsequent clamping.

[0050] Then, the pipe clamping and protection stage begins. The linear telescopic component 62 is activated, and the transmission rod 65 pushes the two semicircular blocks 63 closer to each other until their end faces fit together, forming a ring-shaped limiting structure. During this process, the elastic component 644 of the fitting mechanism 64 contacts the outer wall of the pipe first, and its U-shaped groove 643 aligns with and accommodates the protruding structure on the outer wall of the pipe, which not only ensures the clamping force but also effectively avoids damage to the outer wall of the pipe and the protruding structure during the clamping process.

[0051] Next, the pipe and joint are aligned and precisely fitted. The second drive component 5 is activated, which moves the positioning block 61 and the entire clamping device 6 vertically downward, so that the pipe end face gradually approaches the pipe joint end face. When the two are close to fitting, the third drive component 652 is activated, which pushes the movable rod 651 to move the wedge block 664 downward through the inclined plane. Through the transmission plate 661 and the extension plate 648, the fitting plate 641 moves down slightly, realizing the precise fitting of the pipe end face and ensuring the tightness of the weld.

[0052] Then, the circumferential welding stage begins. The fourth drive component 7 is activated, and the welding torch 10 is adjusted to move radially along the pipeline so that its output end is precisely aligned with the welding area between the pipeline and the pipeline joint. The welding torch 10 is then activated to perform welding. At the same time, the electric rotary table 8 drives the fourth drive component 7 and the welding torch 10 to make circular motions around the pipeline to complete the circumferential welding. During the welding process, the baffle plate 2 set at the edge of the operating table 1 effectively blocks the spatter and prevents it from splashing to the surrounding area.

[0053] Finally, post-weld reset and unloading are performed. After welding is completed, the welding torch 10 is turned off, the movable rod 651 retracts, the wedge block 664 automatically resets under the action of the reset spring 665, the bonding plate 641 returns to its original position, the linear telescopic component 62 moves in the opposite direction, the two semicircular blocks 63 separate to release the pipe, the second drive component 5 drives the clamping device 6 to rise and reset, the first drive component 4 drives the clamping device 6 to return horizontally to its original position, and finally the welded pipe is removed, completing the entire automatic welding process.

[0054] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An automatic pipe welding device with a welding spatter blocking structure, comprising an operating table (1), wherein a vertically upward mounting plate (3) is fixedly connected to one side of the operating table (1), and a first driving component (4) and a second driving component (5) of the transmission part of the first driving component (4) are horizontally fixedly mounted on the top of the mounting plate (3), characterized in that, A baffle plate (2) is inserted into the edge of the operating table (1). The baffle plate (2) is used to block splashes. A clamping device (6) is fixedly installed on the transmission part of the second drive component (5). The clamping device (6) is used to clamp the pipe. A three-jaw chuck (9) is fixedly installed on the top of the operating table (1). The three-jaw chuck (9) is used to clamp the pipe joint. During welding, the first driving component (4) pushes the second driving component (5) to move horizontally, which is used to push the clamping device (6) and the three-jaw chuck (9) to form a coaxial state. The first driving component (4) is used to push the clamping device (6) to move vertically, so that the pipe end face is close to the pipe joint end face. An electric rotary table (8) is fixedly installed inside the operating table (1). The electric rotary table (8) is coaxially arranged with the three-jaw chuck (9). A fourth drive component (7) is fixedly installed on the upper surface of the rotating part of the electric rotary table (8). A welding torch (10) is fixedly connected to the transmission part of the fourth drive component (7). The fourth drive component (7) is used to drive the welding torch (10) to move radially along the pipe. The electric rotary table (8) is used to drive the fourth drive component (7) to make circumferential motion along the pipe. The welding torch (10) is used to weld the pipe and the pipe joint together.

2. The automatic pipe welding device with a welding spatter blocking structure according to claim 1, characterized in that, The clamping device (6) includes a positioning block (61) and two semicircular blocks (63). The positioning block (61) is connected to the transmission part of the second driving component (5). The two semicircular blocks (63) are arranged opposite to each other on the inner side of the positioning block (61). The two semicircular blocks (63) are spliced ​​together to form an annular limiting structure, which is used to limit the axial direction of the pipe.

3. The automatic pipe welding device with a welding spatter blocking structure according to claim 2, characterized in that, A linear telescopic component (62) is fixedly installed at the end of the positioning block (61). A transmission rod (65) is fixedly connected to the output end of the linear telescopic component (62). The transmission rod (65) is slidably disposed inside the positioning block (61). The end of the transmission rod (65) is fixedly connected to the semicircular block (63). The linear telescopic component (62) is used to push the transmission rod (65) and the semicircular block (63). A fitting mechanism (64) is slidably disposed on the inner arc surface of the semicircular block (63). The fitting mechanism (64) is used to contact the pipe.

4. The automatic pipe welding device with a welding spatter blocking structure according to claim 3, characterized in that, The bonding mechanism (64) includes a bonding plate (641). Two support structures are provided on the side of the bonding plate (641) facing the linear telescopic component (62). The two support structures are distributed vertically and are used to support the bonding plate (641). The support structure includes a fixing plate (645) integrally formed on the bonding plate (641). An elastic connecting component (647) is fixedly connected to the lower surface of the fixing plate (645). A movable plate (646) is fixedly connected to the end of the elastic connecting component (647). The movable plate (646) is slidably connected to the bonding plate (641).

5. The automatic pipe welding device with a welding spatter blocking structure according to claim 4, characterized in that, The bonding plate (641) is fixedly connected to an elastic component (644) on the side facing the pipe. Both the interior of the elastic component (644) and the interior of the bonding plate (641) are provided with U-shaped grooves (643), and the U-shaped grooves (643) extend upward through the bonding plate (641) and the elastic component (644). The U-shaped grooves (643) are used to accommodate functional components on the outer wall of the pipe.

6. The automatic pipe welding device with a welding spatter blocking structure according to claim 5, characterized in that, The inner side of the semicircular block (63) has two cavities (632) for accommodating the support structure. The two cavities (632) are distributed vertically and a partition plate (631) is formed between them. The two cavities (632) are connected at their bisection points and the connecting part is located at the edge of the partition plate (631). The movable plates (646) in the two support structures are slidably disposed at the bottom of the two cavities (632).

7. An automatic pipe welding device with a welding spatter blocking structure according to claim 3, characterized in that, The inner side of the semicircular block (63) is movably provided with a limiting mechanism (66). The limiting mechanism (66) includes a transmission plate (661) and a limiting tooth plate (662). The side of the bonding plate (641) facing the cavity (632) is integrally formed with two extension plates (648). The two extension plates (648) are located between two support structures, and the extension plates (648) are located at the top of the lower cavity (632). The transmission plate (661) is located between the two extension plates (648). The transmission plate (661) is used to determine the height of the extension plates (648). The shape of the extension plates (648) is adapted to the shape of the transmission plate (661).

8. An automatic pipe welding device with a welding spatter blocking structure according to claim 7, characterized in that, A connecting rod (663) is integrally formed at the bisecting point of the edge of the transmission plate (661). A movable rod (651) is slidably arranged inside the transmission rod (65). The end of the movable rod (651) is provided with an inclined surface whose shape matches the wedge block (664), and the upper surface of the movable rod (651) is higher than the lower surface of the wedge block (664). A third driving component (652) is fixedly installed at the bottom of the transmission rod (65). A strip hole (653) is opened at the bottom of the transmission rod (65). The bottom of (651) passes through the strip hole (653) and is fixedly connected to the transmission part of the third drive component (652). The lower surfaces on both sides of the connecting rod (663) are fixedly connected with return springs (665). A guide rod (633) is fixedly installed on the side wall of the cavity (632). The wedge block (664) is sleeved on the outer wall of the guide rod (633). The bottom of the return spring (665) is fixedly connected to the bottom of the cavity (632). The return spring (665) is used to support the wedge block (664).

9. An automatic pipe welding device with a welding spatter blocking structure according to claim 7, characterized in that, The top of the bonding plate (641) is integrally formed with an extension rod (642). The upper surface of the topmost fixing plate (645) is provided with a toothed groove. The inner top of the upper cavity (632) is provided with a limiting toothed plate (662). The fixing plate (645) with the toothed groove is engaged with the lower surface of the limiting toothed plate (662) under the support of the elastic connecting member (647). The extension rod (642) serves as an extension structure of the bonding plate (641) and is used to be pressed down and drive the bonding plate (641) to disengage the fixing plate (645) from the limiting toothed plate (662).

10. An automatic pipe welding device with a welding spatter blocking structure according to claim 8, characterized in that, The top of the connecting rod (663) is fixedly connected to a wedge block (664). The wedge block (664) is located at the edge of the protruding tooth on the lower surface of the limiting tooth plate (662), and the top of the wedge block (664) is fixedly connected to the limiting tooth plate (662). When the transmission plate (661) moves, it drives the limiting tooth plate (662) through the connecting rod (663) to ensure that the limiting tooth plate (662) still meshes with the tooth groove on the upper surface of the fixed plate (645) during the downward movement of the fixed plate (645).

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