Automatic pipeline welding device

Abstract

The invention belongs to the technical field of other metal machining machinery manufacturing, and particularly relates to an automatic pipeline welding device which comprises a machine body, a first guide rail is fixedly connected to the upper surface of the machine body, a lead screw is rotationally connected into the first guide rail, and two sets of sliding plates are slidably connected to the circumferential face of the lead screw; a supporting table is fixedly connected to the upper surface of each sliding plate, a welding assembly is further arranged on the upper surface of the machine body and comprises a first gear ring rotationally arranged above the machine body, and a plurality of welding heads are fixedly connected to the inner wall of the first gear ring; a grinding assembly is further arranged on one side of the welding assembly and comprises a second gear ring rotationally arranged on one side of the first gear ring, and a plurality of dull polish blocks are connected to the inner wall of the second gear ring in a clamped mode. And by arranging the grinding assembly and the replacing assembly, the problem that the grinding process is tedious in the prior art is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of other metal processing machinery manufacturing, and in particular is an automatic pipeline welding device. Background Art

[0002] Pipe welding is widely used in the construction of mechanical equipment and piping systems. During on-site construction of pipeline projects like oil and gas pipelines, stringent requirements are placed on pipe docking and welding. Factors such as docking positioning accuracy, welding process stability, and construction space are crucial, so welding equipment must possess the technical advantages to ensure these qualities.

[0003] A patent with publication number CN119839574B discloses an automatic pipe welding device, comprising a fixing frame and a motor, wherein two symmetrically distributed L-shaped frames slide on the top of the clip, a mounting frame is fixed to the middle of the front upper end of the fixing frame, and multiple guide rods are installed on the left and right sides of the vertical part of the mounting frame, and the rear sides of the two horizontal parts of the L-shaped frames are fixed with limiting mechanisms, and a supporting welding mechanism is fixed to the middle of the upper end of the fixing frame, and the lower parts of the two limiting mechanisms are threadedly connected to the threaded rod. The automatic pipe welding device described in the present invention can drive the guide mechanism to drive the swing structure to operate synchronously after the metal pipe is placed on the supporting welding mechanism under the action of the gravity of the metal pipe, so that the roller three is automatically attached to the outer surface of the metal pipe, without the need to adjust the swing structure separately.

[0004] However, when the existing automatic pipeline welding device is in use, after the two pipelines are connected and welded, there will often be defects such as weld nodules and spatters at the weld, and the surface is rough and uneven, so separate grinding work is required. Therefore, the steel pipe that has just been welded must be removed from the welding device. Since the temperature of the steel pipe is high at this time, not only is there a risk of scalding the operator during the disassembly process, but it may also cause collision damage to the welding part, affecting the welding quality. Afterwards, it is necessary to use special transfer tools to transfer the pipeline to a separate grinding machine. This back and forth transfer not only consumes a lot of time and manpower, reducing the overall construction efficiency, but also during the transfer, the pipeline may also have new scratches or deformations due to bumps, collisions, etc., which increases the difficulty of subsequent grinding work and may even cause the entire pipeline to need to be reprocessed, increasing processing costs.

[0005] To this end, the present invention provides a pipeline automatic welding device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: the automatic pipeline welding device described in the present invention includes a body, a first guide rail is fixedly connected to the upper surface of the body, a screw rod is rotatably connected in the first guide rail, two sets of slides are slidably connected to the circumferential surface of the screw rod, and the upper surface of each slide is fixedly connected to a support platform. The upper surface of the body is also provided with a welding assembly, and the welding assembly includes a first gear ring rotatably arranged above the body, and the inner wall of the first gear ring is fixedly connected to a plurality of welding heads; A grinding assembly is further provided on one side of the welding assembly, and the grinding assembly includes a second gear ring rotatably provided on one side of the first gear ring, and a plurality of grinding blocks are clamped on the inner wall of the second gear ring; A side panel is fixedly connected to the upper surface of the machine body, a replacement assembly is provided on one side of the side panel, and the replacement assembly includes an auxiliary plate fixedly connected to one side of the side panel, an electric push rod is fixedly connected to the upper surface of the auxiliary plate, and a card plate is fixedly connected to the output end of the electric push rod, and the card plate is used for replacing the new sanding block.

[0008] Preferably, the welding assembly also includes a second guide rail fixedly connected to the upper surface of the machine body, a second slide groove is opened on the upper surface of the second guide rail, a slide is slidably connected in the second slide groove, a first servo motor is fixedly connected to one side of the slide, the output end of the first servo motor is fixedly connected to a rotating gear, the rotating gear is meshed with a first gear ring, a plurality of welding heads are fixedly connected to the interior of the first gear ring, and the first gear ring is supported by a support frame on one side of the machine body.

[0009] Preferably, the grinding assembly includes a second servo motor fixedly connected to one side of the slide, the output end of the second servo motor is fixedly connected to a connecting gear, the connecting gear is engaged with a second gear ring, and a plurality of fixing grooves are opened on one side of the second gear ring, and a sanding block is clamped in each of the fixing grooves.

[0010] Preferably, a connecting groove is opened inside the second gear ring, a compression spring is fixed to the inner wall of the connecting groove, one end of the compression spring is fixed to an inclined block, a positioning column is fixed to the lower surface of the auxiliary plate, the bottom end of the positioning column is fixed to a fixing rod, and the fixing rod is an electropermanent magnet rod.

[0011] Preferably, an auxiliary groove is provided inside the second gear ring, the sanding block is clamped in the auxiliary groove, a positioning groove is provided at the top of the sanding block, a partition is fixedly connected to the middle of the positioning groove, positioning springs are fixedly connected on both sides of the partition, and a conical protrusion is fixedly connected to one end of each positioning spring.

[0012] Preferably, the replacement component also includes a storage box fixed to the upper surface of the auxiliary plate, new sanding blocks are stored in the storage box, a fixing hole is provided on the upper surface of the auxiliary plate, two rotating shafts are fixed to one side of the clamping plate, the circumferential surface of each rotating shaft is sleeved with a torsion spring, one end of each torsion spring is fixed to a rotating block, and a groove is provided on the upper surface of the rotating block.

[0013] Preferably, when the sanding block is replaced, the electric push rod is started to drive the card plate to move up, so that the two rotating block grooves on one side of the card plate are aligned with the fixed hole, and the built-in hydraulic cylinder in the storage box pushes the new sanding block inside to fall from the fixed hole and overlap between the two rotating blocks.

[0014] Preferably, when replacing the sanding block, start the second guide rail to drive the slide in the second slide groove, and the slide drives the second gear ring on one side of it to approach the fixed rod, and the fixed rod squeezes the inclined block in the connecting groove, and the inclined block squeezes the compression spring into the connecting groove, thereby releasing the clamping of the sanding block and carrying out the replacement work.

[0015] Preferably, two groups of limiting components are provided on one side of the side plate, each group of limiting components includes a top plate fixedly connected to one side of the side plate, the upper surface of the top plate is fixedly connected to a first hydraulic cylinder, and the output end of the first hydraulic cylinder is fixedly connected to a rubber auxiliary ring.

[0016] Preferably, after the two steel pipes are butt-jointed and the butt joint is at a position directly opposite the welding joint, the first hydraulic cylinder on the upper surface of each top plate is started, and the first hydraulic cylinder drives the rubber auxiliary ring at its output end to move downward, thereby limiting the steel pipe.

[0017] The beneficial effects of the present invention are as follows: 1. The automatic pipeline welding device described in the present invention integrates welding and polishing functions into one device, thereby reducing the equipment footprint and procurement costs, improving production efficiency, and achieving the continuity of the processing flow. Secondly, through the first guide rail, the second guide rail, the screw rod and other structures, the workpiece position and the position of the welding and polishing components can be flexibly adjusted to meet the processing requirements of the pipeline, thereby enhancing the versatility of the equipment. Furthermore, the polishing component adopts a replaceable sanding block design. With the replacement component, the worn sanding block can be replaced quickly and conveniently, ensuring the polishing effect, extending the service life of the equipment, reducing maintenance costs, and improving the overall processing quality and stability.

[0018] 2. The automatic pipeline welding device described in the present invention uses the second guide rail and the slide to accurately control the operating position. The fixed rod cooperates with the bevel block to easily release the clamping of the old sanding block. The permanent magnet rod has the characteristics of electromagnetic attraction when it is disconnected and demagnetization when it is powered on, so the old sanding block can be conveniently removed. The electric push rod cooperates with the rotating block and the built-in hydraulic cylinder to automatically and accurately load the new sanding block. The whole process has a high degree of automation, which saves manpower, improves replacement efficiency, and ensures continuous and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of embodiment 1 of the present invention; Figure 2 It is a structural diagram of the main body of the present invention; Figure 3 It is a schematic structural diagram of the replacement component and the polishing component of the present invention; Figure 4 It is a structural schematic diagram of the grinding assembly of the present invention; Figure 5 It is a structural schematic diagram of the buckle assembly of the present invention; Figure 6 This is a schematic structural diagram of the connection relationship between the convex block and the frosting block of the present invention; Figure 7 is a cross-sectional view of the sanding block of the present invention; Figure 8 It is a structural schematic diagram of the replacement assembly of the present invention; Figure 9 This is a schematic structural diagram of the connection relationship between the rotating block and the rotating shaft of the present invention; In the figure: 1. body; 2. First guide rail; 21. Screw rod; 22. Slide plate; 23. Support platform; 24. Second guide rail; 25. Second slide groove; 26. Slide plate; 27. First servo motor; 28. Rotating gear; 29. ​​First gear ring; 210. Welding head; 211. Second servo motor; 212. Connecting gear; 213. Second gear ring; 214. Fixing groove; 215. Sanding block; 216. Connecting groove; 217. Compression spring; 218. Bevel block; 219. Auxiliary groove; 220. Magnetic block; 221. Protrusion; 222. Positioning groove; 223. Positioning spring; 224. Partition plate; 3. Side plate; 31. Top plate; 32. First hydraulic cylinder; 33. Auxiliary ring; 4. Auxiliary plate; 41. Electric push rod; 42. Card plate; 43. Positioning column; 44. Fixing rod; 45. Storage box; 46. Fixing hole; 47. Rotating block; 48. Groove; 49. Rotating shaft; 410. Torsion spring. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1: Figures 1 to 9 As shown, an automatic pipeline welding device according to an embodiment of the present invention includes a body 1, a first guide rail 2 is fixedly connected to the upper surface of the body 1, a screw rod 21 is rotatably connected in the first guide rail 2, two sets of slides 22 are slidably connected to the circumferential surface of the screw rod 21, and the upper surface of each slide 22 is fixedly connected to a support platform 23, and a welding assembly is further provided on the upper surface of the body 1, the welding assembly includes a first gear ring 29 rotatably arranged above the body 1, and a plurality of welding heads 210 are fixedly connected to the inner wall of the first gear ring 29; the welding assembly also includes a second guide rail 24 fixed to the upper surface of the body 1, a second slide groove 25 is provided on the upper surface of the second guide rail 24, a slide 26 is slidably connected in the second slide groove 25, a first servo motor 27 is fixedly connected to one side of the slide 26, a rotating gear 28 is fixedly connected to the output end of the first servo motor 27, and the rotating gear 28 is meshed with the first gear ring 29, and a plurality of welding heads 210 are fixedly connected to the interior of the first gear ring 29. The first gear ring 29 is supported by a support frame on one side of the body 1; a grinding assembly is also provided on one side of the welding assembly, which includes a second gear ring 213 rotatably arranged on one side of the first gear ring 29, and a plurality of grinding blocks 215 are clamped on the inner wall of the second gear ring 213; the grinding assembly includes a second servo motor 211 fixedly connected to one side of the slide 26, and the output end of the second servo motor 211 is fixedly connected to a connecting gear 212, and the connecting gear 212 is meshed with the second gear ring 213. A plurality of fixing grooves 214 are opened on one side of the second gear ring 213, and a grinding block 215 is clamped in each fixing groove 214; a side plate 3 is fixedly connected to the upper surface of the body 1, and a replacement assembly is provided on one side of the side plate 3. The replacement assembly includes an auxiliary plate 4 fixedly connected to one side of the side plate 3, and an electric push rod 41 is fixedly connected to the upper surface of the auxiliary plate 4. The output end of the electric push rod 41 is fixedly connected to a card plate 42, and the card plate 42 is used to replace the new grinding block 215.

[0023] Specifically, when the existing automatic pipe welding device is in use, after the two pipes are butt-jointed and welded, defects such as weld nodules and spatters often appear at the welded parts, and the surface is rough and uneven, so a separate grinding work is required. Therefore, the steel pipe that has just been welded must be disassembled from the welding device. Since the temperature of the steel pipe is high at this time, not only is there a risk of scalding the operator during the disassembly process, but it may also cause collision damage to the welding part, affecting the welding quality. Afterwards, a special transfer tool is required to transfer the pipe to a separate grinding machine. This back-and-forth transfer not only consumes a lot of time and manpower, and reduces the overall construction efficiency, but also during the transfer, the pipe may also develop new scratches or deformations due to bumps, collisions, etc., which increases the difficulty of subsequent grinding work and may even cause the entire pipe to need to be reprocessed, increasing processing costs. Therefore, the present invention sets the above structure based on the above problem. First, when welding two pipes, two pipes of the same size are placed on the support platform 23. Then the screw rod 21 in the first guide rail 2 rotates, driving the two sets of slides 22 and the support platform 23 thereon to move, so as to adjust the positions of the two pipes so that the abutment of the two pipes is aligned with the welding head 210. During welding, the first servo motor 27 drives the rotating gear 28 to rotate. Since the rotating gear 28 is engaged with the first gear ring 29, the first gear ring 29 rotates accordingly, and the several welding heads 210 on its inner wall perform welding operations on the workpiece. After welding is completed, the polishing process is entered, and the second guide rail 24 is started to slide the slide 26 thereon along the second slide groove 25, driving the second gear ring 29 to rotate. The wheel ring 213 is aligned with the welding point of the two pipes, and then after the two pipes have cooled for a period of time, the second servo motor 211 is started. After the second servo motor 211 is started, it can drive the connecting gear 212 to rotate, and the connecting gear 212 drives the second gear ring 213 to rotate. The grinding block 215 engaged in the second gear ring 213 rotates accordingly, grinding the surface of the workpiece after welding, thereby completing the grinding work. However, after working for a long time, the bottom end of the grinding block 215 will be greatly worn, resulting in it being unable to abut against the joint of the pipe. Therefore, the grinding block 215 needs to be replaced in time. When the grinding block 215 is worn and needs to be replaced, the replacement component comes into play, and the grinding block 215 is replaced by replacing the replacement component. By integrating the welding and grinding functions into one device, the equipment footprint and procurement costs are reduced, production efficiency is improved, and the continuity of the processing flow is achieved. Secondly, through the first guide rail 2, the second guide rail 24 and the screw rod 21 and other structures, the workpiece position and the position of the welding and grinding components can be flexibly adjusted to meet the processing requirements of the pipeline, thereby enhancing the versatility of the equipment. Furthermore, the grinding component adopts a replaceable grinding block 215 design. With the replacement component, the worn grinding block 215 can be quickly and conveniently replaced to ensure the grinding effect, extend the service life of the equipment, reduce maintenance costs, and improve the overall processing quality and stability.

[0024] like Figures 4 to 8 As shown, in this embodiment, a connecting groove 216 is formed inside the second gear ring 213, and a compression spring 217 is fixedly connected to the inner wall of the connecting groove 216. One end of the compression spring 217 is fixedly connected to an inclined block 218. A positioning column 43 is fixedly connected to the lower surface of the auxiliary plate 4, and a fixing rod 44 is fixedly connected to the bottom end of the positioning column 43. The fixing rod 44 is an electro-permanent magnet rod. The replacement component also includes a storage box 45 fixed to the upper surface of the auxiliary plate 4, and new sanding blocks 215 are stored in the storage box 45. A fixing hole 46 is provided on the upper surface of the auxiliary plate 4. Two rotating shafts 49 are fixed to one side of the clamping plate 42. The circumferential surface of each rotating shaft 49 is sleeved with a torsion spring 410, and one end of each torsion spring 410 is fixed to a rotating block 47, and a groove 48 is provided on the upper surface of the rotating block 47.

[0025] Specifically, when the sanding block 215 is replaced, the second guide rail 24 is first started to drive the slide 26 to move toward the direction close to the fixed rod 44. When the second gear ring 213 approaches the fixed rod 44, the fixed rod 44 squeezes the inclined block 218 inside the second gear ring 213. After being squeezed, the inclined block 218 retracts into the connecting groove 216, releasing the clamping of the sanding block 215. Then, because the fixed rod 44 is an electro-permanent magnet rod, the fixed rod 44 is powered off to restore its magnetic attraction, magnetically attracting the magnetic block 220 at the top of the sanding block 215, and then the slide 26 is retracted. During the retraction process, the sanding block 215 is separated from the second gear ring 213, and then the fixing rod 44 is energized to make it lose its magnetism, thereby removing the old sanding block 215. Subsequently, the electric push rod 41 is started to drive the card plate 42 to move upward, so that the grooves 48 of the two rotating blocks 47 on one side of the card plate 42 are aligned with the fixing holes 46. The built-in hydraulic cylinder in the storage box 45 pushes the new sanding block 215 inside to fall from the fixing holes 46 and overlap between the two rotating blocks 47. Then the electric push rod 41 drives the card plate 42 to move downward and align with the fixing rod 44, and then the new sanding block 215 is magnetically attracted and installed in the second gear ring 213. By utilizing the second guide rail 24 and the slide 26 to precisely control the operating position, the fixed rod 44 cooperates with the inclined block 218 to easily release the clamping of the old sanding block 215. The permanent magnet rod has the characteristics of electromagnetic attraction being turned off and demagnetization being energized, so the old sanding block 215 can be conveniently removed. The electric push rod 41 cooperates with the rotating block 47 and the built-in hydraulic cylinder to automatically and accurately install the new sanding block 215. The whole process has a high degree of automation, which saves manpower, improves replacement efficiency, and ensures continuous and stable operation of the equipment.

[0026] like Figure 7As shown, an auxiliary groove 219 is provided inside the second gear ring 213 of this embodiment, and the frosting block 215 is clamped in the auxiliary groove 219. A positioning groove 222 is provided at the top of the frosting block 215, and a partition 224 is fixedly connected to the middle of the positioning groove 222. Positioning springs 223 are fixedly connected to both sides of the partition 224, and one end of each positioning spring 223 is fixedly connected to a conical protrusion 221.

[0027] Specifically, when the sanding block 215 is separated from the second gear ring 213, when the slide 26 retracts, the fixing rod 44 magnetically attracts the old sanding block 215. As a result, the sanding block 215 is passively squeezed by the second gear ring 213, and the conical protrusion 221 at the top of the sanding block squeezes the positioning spring 223 into the positioning groove 222, so that the old sanding block 215 can be removed. The effect of rapid disassembly is achieved, and the replacement of the frosting block 215 is also more convenient, thereby improving processing efficiency.

[0028] Example 2: Figures 1 to 9 As shown, compared with Example 1, another embodiment of the present invention is: two groups of limit components are provided on one side of the side plate 3, each group of limit components includes a top plate 31 fixedly connected to one side of the side plate 3, the upper surface of the top plate 31 is fixedly connected to the first hydraulic cylinder 32, and the output end of the first hydraulic cylinder 32 is fixedly connected to the rubber auxiliary ring 33.

[0029] Specifically, after the two steel pipes are butt-jointed and the butt joint is in a position opposite to the welding head 210, the first hydraulic cylinder 32 on the upper surface of each top plate 31 is started. The first hydraulic cylinder 32 drives the rubber auxiliary ring 33 at its output end to move downward, thereby limiting the position of the steel pipe; ensuring welding accuracy, improving welding quality, and providing a stable and reliable steel pipe connection structure for subsequent projects.

[0030] Working principle: First, when welding two pipes, two pipes of the same size are placed on the support platform 23. Then the screw rod 21 in the first guide rail 2 rotates, driving the two sets of slides 22 and the support platform 23 thereon to move, so as to adjust the positions of the two pipes so that the abutment of the two pipes is aligned with the welding head 210. During welding, the first servo motor 27 drives the rotating gear 28 to rotate. Since the rotating gear 28 is engaged with the first gear ring 29, the first gear ring 29 rotates accordingly, and the several welding heads 210 on its inner wall perform the welding operation on the workpiece. After the welding is completed, the polishing process is entered, and the second guide rail 24 is started so that the slide 26 on it moves along the second guide rail 24. The second slide 25 slides, driving the second gear ring 213 to align with the welding point of the two pipes. Then, after waiting for the two pipes to cool down for a period of time, the second servo motor 211 is started. After the second servo motor 211 is started, it can drive the connecting gear 212 to rotate. The connecting gear 212 drives the second gear ring 213 to rotate. The grinding block 215 engaged in the second gear ring 213 rotates accordingly, grinding the surface of the workpiece after welding, thereby completing the grinding work. However, after working for a long time, the bottom end of the grinding block 215 will be greatly worn, resulting in it being unable to abut against the pipe joint. Therefore, the grinding block 215 needs to be replaced in time. When the sanding block 215 is replaced, the second guide rail 24 is first started to drive the slide 26 to move toward the fixed rod 44. When the second gear ring 213 approaches the fixed rod 44, the fixed rod 44 squeezes the inclined block 218 inside the second gear ring 213. After being squeezed, the inclined block 218 retracts into the connecting groove 216, releasing the clamping of the sanding block 215. Then, because the fixed rod 44 is an electro-permanent magnet, the fixed rod 44 is powered off to restore its magnetic attraction, magnetically attracting the magnetic block 220 at the top of the sanding block 215, and then the slide 26 is retracted. During the retraction process, the sanding block 215 5 is disengaged from the second gear ring 213, and then the fixing rod 44 is energized to demagnetize it, thereby removing the old sanding block 215. Subsequently, the electric push rod 41 is activated to drive the card plate 42 upward, so that the grooves 48 of the two rotating blocks 47 on one side of the card plate 42 are aligned with the fixing holes 46. The built-in hydraulic cylinder in the storage box 45 pushes the new sanding block 215 inside to fall from the fixing holes 46 and overlap between the two rotating blocks 47. Then, the electric push rod 41 drives the card plate 42 to move downward and align with the fixing rod 44, and then the new sanding block 215 is magnetically attracted and installed in the second gear ring 213. When the sanding block 215 is separated from the second gear ring 213 and the slide 26 is retracted, the fixing rod 44 magnetically attracts the old sanding block 215. As a result, the sanding block 215 is passively squeezed by the second gear ring 213. The conical protrusion 221 at the top of the sanding block 215 squeezes the positioning spring 223 into the positioning groove 222, and the old sanding block 215 can be removed. By utilizing the second guide rail 24 and the slide 26 to precisely control the operating position, the fixed rod 44 cooperates with the inclined block 218 to easily release the clamping of the old sanding block 215. The permanent magnet rod has the characteristics of electromagnetic attraction being turned off and demagnetization being turned on, so the old sanding block 215 can be conveniently removed. The electric push rod 41 cooperates with the rotating block 47 and the built-in hydraulic cylinder to automatically and accurately install the new sanding block 215. The entire process has a high degree of automation, saving manpower, improving replacement efficiency, and ensuring continuous and stable operation of the equipment. By integrating the welding and grinding functions into one device, the equipment footprint and procurement costs are reduced, production efficiency is improved, and the continuity of the processing flow is achieved. Secondly, through the first guide rail 2, the second guide rail 24 and the screw rod 21 and other structures, the workpiece position and the position of the welding and grinding components can be flexibly adjusted to meet the processing requirements of the pipeline, thereby enhancing the versatility of the equipment. Furthermore, the grinding component adopts a replaceable grinding block 215 design. With the replacement component, the worn grinding block 215 can be quickly and conveniently replaced to ensure the grinding effect, extend the service life of the equipment, reduce maintenance costs, and improve the overall processing quality and stability.

[0031] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline automatic welding device, comprising a body (1), wherein a first guide rail (2) is fixedly connected to the upper surface of the body (1), a screw rod (21) is rotatably connected in the first guide rail (2), and two sets of slide plates (22) are slidably connected to the circumferential surface of the screw rod (21), and the upper surface of each slide plate (22) is fixedly connected to a support platform (23), characterized in that: The upper surface of the machine body (1) is further provided with a welding assembly, the welding assembly comprising a first gear ring (29) rotatably arranged above the machine body (1), and a plurality of welding heads (210) fixedly connected to the inner wall of the first gear ring (29); A grinding assembly is also provided on one side of the welding assembly, the grinding assembly comprising a second gear ring (213) rotatably provided on one side of the first gear ring (29), and a plurality of grinding blocks (215) are clamped on the inner wall of the second gear ring (213); A side panel (3) is fixedly connected to the upper surface of the machine body (1), and a replacement assembly is provided on one side of the side panel (3). The replacement assembly includes an auxiliary panel (4) fixedly connected to one side of the side panel (3), an electric push rod (41) is fixedly connected to the upper surface of the auxiliary panel (4), and a clamping plate (42) is fixedly connected to the output end of the electric push rod (41), and the clamping plate (42) is used for replacing a new sanding block (215).

2. The automatic pipeline welding device according to claim 1, characterized in that: The welding assembly further comprises a second guide rail (24) fixedly connected to the upper surface of the machine body (1), a second slide groove (25) being provided on the upper surface of the second guide rail (24), a slide table (26) being slidably connected in the second slide groove (25), a first servo motor (27) being fixedly connected to one side of the slide table (26), a rotating gear (28) being fixedly connected to the output end of the first servo motor (27), a first gear ring (29) being meshed with the rotating gear (28), a plurality of welding heads (210) being fixedly connected to the interior of the first gear ring (29), and the first gear ring (29) being supported by a support frame on one side of the machine body (1).

3. The automatic pipeline welding device according to claim 2, characterized in that: The grinding assembly comprises a second servo motor (211) fixedly connected to one side of the slide (26); an output end of the second servo motor (211) is fixedly connected to a connecting gear (212); the connecting gear (212) is engaged with a second gear ring (213); a plurality of fixing grooves (214) are formed on one side of the second gear ring (213); and a grinding block (215) is clamped in each of the fixing grooves (214).

4. The automatic pipeline welding device according to claim 1, characterized in that: A connecting groove (216) is provided inside the second gear ring (213), a compression spring (217) is fixedly connected to the inner wall of the connecting groove (216), one end of the compression spring (217) is fixedly connected to an inclined block (218), a positioning column (43) is fixedly connected to the lower surface of the auxiliary plate (4), a fixing rod (44) is fixedly connected to the bottom end of the positioning column (43), and the fixing rod (44) is an electro-permanent magnet rod.

5. The automatic pipeline welding device according to claim 3, characterized in that: An auxiliary groove (219) is provided inside the second gear ring (213), and the frosting block (215) is clamped in the auxiliary groove (219). A positioning groove (222) is provided at the top of the frosting block (215), and a partition (224) is fixedly connected to the middle of the positioning groove (222). Positioning springs (223) are fixedly connected to both sides of the partition (224), and one end of each positioning spring (223) is fixedly connected to a conical protrusion (221).

6. The automatic pipeline welding device according to claim 1, characterized in that: The replacement assembly further includes a storage box (45) fixedly connected to the upper surface of the auxiliary plate (4), wherein new sanding blocks (215) are stored in the storage box (45), a fixing hole (46) is provided on the upper surface of the auxiliary plate (4), and two rotating shafts (49) are fixedly connected to one side of the clamping plate (42), and a torsion spring (410) is sleeved on the circumferential surface of each rotating shaft (49), and one end of each torsion spring (410) is fixedly connected to a rotating block (47), and a groove (48) is provided on the upper surface of the rotating block (47).

7. The automatic pipeline welding device according to claim 6, characterized in that: When the sanding block (215) is replaced, the electric push rod (41) is started to drive the card plate (42) to move upward, so that the grooves (48) of the two rotating blocks (47) on one side of the card plate (42) are aligned with the fixing holes (46), and the built-in hydraulic cylinder in the storage box (45) pushes the new sanding block (215) inside to fall from the fixing holes (46) and overlap between the two rotating blocks (47).

8. The automatic pipeline welding device according to claim 4, characterized in that: When the sanding block (215) is replaced, the second guide rail (24) is started to drive the slide (26) in the second slide groove (25), and the slide (26) drives the second gear ring (213) on one side thereof to approach the fixed rod (44), and the fixed rod (44) squeezes the inclined block (218) in the connecting groove (216), and the inclined block (218) squeezes the compression spring (217) to retract into the connecting groove (216), thereby releasing the clamping of the sanding block (215) and performing the replacement work.

9. The automatic pipeline welding device according to claim 1, characterized in that: Two groups of position limiting components are provided on one side of the side plate (3), each group of position limiting components comprises a top plate (31) fixedly connected to one side of the side plate (3), a first hydraulic cylinder (32) is fixedly connected to the upper surface of the top plate (31), and an auxiliary ring (33) made of rubber is fixedly connected to the output end of the first hydraulic cylinder (32).

10. The automatic pipeline welding device according to claim 9, characterized in that: After the two steel pipes are butt-jointed and the butt joint is at a position directly opposite the welding joint (210), the first hydraulic cylinder (32) on the upper surface of each top plate (31) is activated. The first hydraulic cylinder (32) drives the rubber auxiliary ring (33) at its output end to move downward, thereby limiting the position of the steel pipe.

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