A pipe rolling and welding device based on spiral-seam steel-plastic composite pipes

Abstract

This application relates to the technical field of metal processing, and particularly to a pipe rolling and welding device based on spiral-seam steel-plastic composite pipes, which includes a spiral pipe rolling mechanism, a bevel processing mechanism, a welding mechanism, a weld seam correction mechanism, and a discharging mechanism. The spiral pipe rolling mechanism realizes the forming and rounding of the rolled material through a coil material roller group and a driving module. The bevel processing mechanism completes bevel processing through the cooperation of a grooving convex ring and a receiving ring. The welding mechanism uses a wire feeding device and a welding gun to weld the weld seam, and a protective cover is set to optimize the welding environment. The weld seam correction mechanism monitors the weld seam gap size and adjusts the stop fixture to ensure the welding accuracy. The discharging mechanism realizes the stable transportation and precise cutting of the pipe fittings through a supporting component and a cutting machine. This application achieves the technical effects of improving the welding quality, enhancing the adaptability of the device, and increasing the production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of metal processing, and particularly to a pipe rolling and welding device for spiral seam steel-plastic composite pipes. Background Art

[0002] The spiral steel pipe rolling and welding device is a key device for producing spiral steel pipes. Spiral steel pipes are widely used in fields such as oil and gas transmission pipelines, urban water supply and drainage systems, and building structures. Compared with straight seam welded pipes, spiral steel pipes have better compressive and bending resistance and are suitable for large-diameter and high-pressure transmission pipelines.

[0003] The spiral steel pipe rolling and welding device usually consists of main parts such as an uncoiling device, a forming unit, a welding system, and a cutting device. The uncoiling device includes an uncoiler, a guide plate, and a leveling machine, which are used to unroll the coiled steel plate and feed it into the production line. The forming unit consists of components such as a pre-bending machine, a forming machine, and guide wheels, which gradually bend the flattened steel plate into a spiral shape through a series of rolling mills. The welding system welds the formed spiral steel pipe to ensure a firm joint. The cutting device cuts the continuously produced steel pipe into a specified length according to requirements.

[0004] When the welding system welds the weld seam of the rolled pipe, since the weld seam is a flat surface, it is difficult for the molten metal of the welding wire to fully penetrate to the root of the weld seam. The flat weld seam reduces the effective bonding area between the plates, resulting in a decrease in tensile strength and compressive capacity. In the welding of steel-plastic composite pipes, insufficient penetration may cause the weld seam to crack during high-pressure testing. In addition, the surface of the weld seam is prone to unevenness after welding treatment, requiring additional grinding treatment, which increases costs. Summary of the Invention

[0005] In order to improve the penetration of the weld seam and the welding quality, this application provides a pipe rolling and welding device for spiral seam steel-plastic composite pipes.

[0006] This application provides a pipe rolling and welding device for spiral seam steel-plastic composite pipes, adopting the following technical solutions, including:

[0007] A spiral pipe rolling mechanism, including a forming frame, a coil roller group arranged on the forming frame, and a driving module. The coil roller group includes a main forming roller, a guide roller, a pressure roller, and a rounding support roller that are parallel to each other. The guide roller is slidably arranged above the main forming roller in the vertical direction. The pressure roller is slidably arranged on one side of the main forming roller. The rounding support roller is slidably arranged on the circumference of the main forming roller. The driving module is used to drive the guide roller to slide in the vertical direction and is also used to drive the pressure roller to slide in a direction closer to or farther from the main forming roller.

[0008] The groove processing mechanism comprises a groove pressing convex ring and a receiving ring, wherein the groove pressing convex ring is sleeved and fixed on one end of the main forming roller, the receiving ring is sleeved and fixed on one end of the pressure roller, and the receiving ring is provided with a matching ring groove for accommodating the groove pressing convex ring;

[0009] A welding mechanism is provided, wherein the welding mechanism is used for welding a weld seam.

[0010] By adopting the above technical solutions, the coiling roller group and driving module in the spiral coiling mechanism can ensure that the steel plate is gradually bent into a spiral shape and maintains good roundness. The groove processing mechanism forms a suitable groove shape at the weld through the cooperation of the groove convex ring and the receiving ring, effectively increasing the penetration depth and improving the tensile strength and compressive resistance of the weld. The welding mechanism welds the processed weld to ensure that the joint is firm and reduce the need for subsequent grinding, thereby improving the overall welding quality and production efficiency.

[0011] Optionally, the welding mechanism includes a wire feeding device and a welding gun, the wire feeding device includes a wire feeding tube, one end of the wire feeding tube is arranged toward the axis of the main forming roller, and the welding gun is arranged on one side of the wire feeding tube.

[0012] By adopting the above technical solution, one end of the wire feeding tube of the wire feeding device is arranged toward the axis of the main forming roller, which can accurately control the direction of the welding wire feeding, so that the welding wire acts more concentratedly on the root of the weld, effectively improves the penetration depth, and enhances the tensile strength and compressive resistance of the weld. The welding gun is arranged on one side of the wire feeding tube to ensure the coordinated cooperation of the welding wire and the heat source during the welding process.

[0013] Optionally, the outer shell of the welding mechanism is provided with a protective cover, and the protective cover is provided with a feed inlet and a discharge port.

[0014] By adopting the above technical solution, by setting a protective cover outside the welding mechanism and opening a feed port and a discharge port on the protective cover, the welding area can be effectively isolated from the external environment, reducing the impact of spatter on peripheral equipment during welding, and preventing external dust and impurities from entering the welding area, thereby improving the stability of the welding process and the quality of the weld.

[0015] Optionally, a weld correction mechanism is further provided, the weld correction mechanism is located on a side of the welding mechanism close to the spiral tube winding mechanism, and the weld correction mechanism includes a weld monitor and a stop machine base;

[0016] The weld monitor is located on one side of the stop machine base and is used to monitor the weld gap size;

[0017] The stop machine base comprises a pipe inlet frame, a hosting roller, and a stop clamp, the pipe inlet frame is provided with a pipe inlet channel, and the hosting roller is rotatably arranged in the pipe inlet channel;

[0018] The stopping fixture includes stopping rollers arranged on both sides of the hosting roller. The two stopping rollers are arranged oppositely, and a driving source for driving the two stopping rollers to slide relatively is arranged on the stopping machine base.

[0019] By adopting the above technical solution, the weld monitor can accurately detect the actual position and size of the weld, ensuring the preparation accuracy before welding. At the same time, the stopping rollers on the stopping machine base can slide relatively through the driving source to clamp the pipe fitting, so that a part of the pipe section of the pipe fitting stops moving, while the spiral pipe coiling mechanism is still continuously coiling and discharging the pipe, resulting in a horizontal displacement difference at both ends of the pipe fitting that has not been welded, reducing the gap between the misaligned welds, thereby compensating for the weld misalignment problem caused by machining the bevel.

[0020] Optionally, it further includes a discharging mechanism. The discharging mechanism includes a discharging bar frame, a carrying component arranged on the discharging bar frame, and a cutting device.

[0021] The carrying component includes carrying supports. A plurality of carrying supports are arranged at intervals along the discharging bar frame. The carrying support includes a support body and a carrying roller rotatably connected to one end of the support body. The axis of the carrying roller is perpendicular to the movement direction of the pipe fitting.

[0022] The cutting device is used for cutting the pipe fitting.

[0023] By adopting the above technical solution, the setting of the discharging mechanism can effectively achieve the stable transportation and accurate cutting of the pipe fitting. Specifically, the carrying component on the discharging bar frame, through a plurality of carrying supports arranged at intervals and the carrying roller rotatably connected to one end of the support body, ensures the stability of the pipe fitting during transportation, avoiding the decline in welding quality caused by vibration or deviation. The design that the axis of the carrying roller is perpendicular to the movement direction of the pipe fitting further reduces the frictional resistance and improves the transportation efficiency. The introduction of the cutting machine ensures the accurate cutting of the formed pipe fitting, meets the requirements of different length specifications, and thus improves the overall production efficiency and product quality.

[0024] Optionally, the carrying component further includes a carrying frame, and the carrying frame is located on the side of the protective cover close to the cutting device.

[0025] The carrying frame includes a carrying frame body and a pipe pressing roller group. A pipe passing channel is arranged on the carrying frame. The pipe pressing roller group includes two relatively arranged pipe pressing rollers, and the pipe pressing rollers are rotatably arranged in the pipe passing channel.

[0026] By adopting the above technical solution, a carrying frame is added to the carrying component, which is located on the side of the protective cover close to the cutting machine and can effectively support the pipe fittings to avoid deviation during welding and cutting. The pipe passing channel on the carrying frame cooperates with the pipe pressing roller group, so that the pipe fittings remain stable during transmission, reducing vibration and displacement, thereby improving the welding and cutting accuracy. The two relatively arranged and rotating pipe pressing rollers further ensure the stability and concentricity of the pipe fittings in the pipe passing channel, preventing the decline of welding quality or cutting error caused by the shaking of the pipe fittings, ultimately improving the overall production efficiency and product quality, and also improving the stability of the pipe fitting transmission.

[0027] Optionally, the cutting machine includes a cutting frame, a swing frame rotatably arranged at one end of the cutting frame, and a cutting tool rotatably arranged at one end of the swing frame. A power source is also arranged on the swing frame, and the power source is used to drive the cutting tool to rotate. A force application source is arranged on the cutting frame, and the force application source is used to drive the swing frame to rotate.

[0028] By adopting the above technical solution, when the pipe fittings need to be cut, the spiral pipe coiling mechanism and the welding mechanism are shut down; the swing frame is driven to rotate towards the direction close to the pipe fittings through the force application source, and at the same time, the power source is started to drive the cutting tool to rotate to cut off the pipe fittings.

[0029] Optionally, a positioning base is arranged on the discharge strip rack, and the positioning base is close to the end of the discharge strip rack;

[0030] The positioning base includes a positioning frame body and a positioning baffle fixed on one side of the positioning frame body.

[0031] By adopting the above technical solution, a positioning base is arranged on the discharge strip rack, and the positioning base is close to the end of the discharge strip rack, which can accurately determine the position of the pipe fittings during the discharging process and avoid the problem of inaccurate cutting caused by position deviation. The positioning base includes a positioning frame body and a positioning baffle fixed on one side of the positioning frame body, and the positioning baffle can play a role in blocking and positioning the pipe fittings, thereby improving the cutting accuracy and product quality.

[0032] Optionally, the positioning frame body is slidably arranged on the discharge strip rack, and a locking member for locking the positioning frame body is also arranged on the discharge strip rack.

[0033] By adopting the above technical solution, the positioning frame body can slide on the discharge strip rack, so as to flexibly adjust its position to meet the processing requirements of pipe fittings of different lengths. At the same time, by setting the locking member, it can ensure that the positioning frame body is firmly fixed after being adjusted to the appropriate position, avoiding displacement during welding or cutting, and improving the processing accuracy and stability.

[0034] Optionally, a distance measuring instrument is arranged on one side of the positioning base, and the distance measuring instrument is used to detect the distance between the positioning base and the cutting device.

[0035] By adopting the above technical solution, the setting of the distance measuring instrument can detect the distance between the positioning base and the cutting device in real time, thereby improving the accuracy of the cutting position.

[0036] In summary, the present application includes at least one of the following beneficial effects:

[0037] 1. Through the synergistic effect of the overfeeding roller group and the driving module in the present application, the forming process of the pipe fitting can be accurately controlled, enabling a more ideal butt joint state to be formed at the weld, thereby improving the tensile strength and compressive capacity of the weld;

[0038] 2. The cooperation of the grooving convex ring and the receiving ring in the bevel processing mechanism in the present application can form a preset bevel at the weld, increasing the penetration depth of the molten metal, effectively solving the problem of insufficient penetration depth, and improving the welding quality;

[0039] 3. The welding mechanism in the present application welds the weld after bevel treatment, ensuring that the weld is firm and the surface is flat, reducing the need for subsequent grinding treatment, and lowering the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is the overall structural schematic diagram of the pipe rolling and welding equipment based on the spiral seam steel-plastic composite pipe in the embodiment of the present application;

[0041] Figure 2 is the structural schematic diagram of the spiral pipe rolling mechanism in the embodiment of the present application;

[0042] Figure 3 is Figure 2 the partial enlarged structural schematic diagram at A in

[0043] Figure 4 is the structural schematic diagram of the welding mechanism after removing the protective cover in the embodiment of the present application;

[0044] Figure 5 is the partial structural schematic diagram highlighting the cutting device in the embodiment of the present application;

[0045] Figure 6 is the structural schematic diagram of the positioning base in the embodiment of the present application;

[0046] Explanation of the reference numerals: 1. spiral tube winding mechanism; 11. forming frame; 12. winding roller group; 121. main forming roller; 122. guide roller; 123. pressure roller; 124. rounding roller; 13. driving module; 131. first cylinder; 132. second cylinder; 2. groove processing mechanism; 21. groove pressing convex ring; 22. receiving ring; 221. matching ring groove; 3. welding mechanism; 31. wire feeding device; 311. wire feeding tube; 312. wire feeding roller; 313. servo motor; 32. welding gun; 33. welding frame; 34. wire reel; 4. protective cover; 41. feed port; 42. discharge port; 5. weld correction mechanism; 51. weld monitor; 52. stop Machine base; 521, pipe inlet frame; 5211, pipe inlet channel; 522, support bracket; 523, hosting roller; 524, stop clamp; 5241, stop roller; 5242, driving source; 6, discharging bar rack; 7, supporting assembly; 71, supporting frame; 711, pipe passage; 712, supporting frame; 713, pipe-resisting roller; 72, supporting bracket; 721, bracket body; 722, supporting roller; 8, cutting device; 81, cutting frame; 82, swing frame; 83, automatic cutting machine; 831, cutting tool; 832, power source; 84, force source; 9, positioning machine base; 91, positioning frame; 92, positioning baffle; 93, locking piece; 10, distance meter. DETAILED DESCRIPTION

[0047] The following is combined with Figures 1-6 This application is described in further detail.

[0048] The embodiment of the present application provides a coiled pipe welding device based on a spiral seam steel-plastic composite pipe.

[0049] The coiled pipe welding equipment based on the spiral seam steel-plastic composite pipe includes a spiral coiling mechanism 1, a groove processing mechanism 2 and a welding mechanism 3. In actual use, an unwinding device is provided at the front end of the spiral coiling mechanism 1, and the unwinding device is used to unwind the rolled steel plate and feed it into the production line; the spiral coiling mechanism 1 is used to gradually bend the steel plate into a spiral shape; the groove processing mechanism 2 is used to process a suitable groove shape at the weld; and the welding mechanism 3 is used to obtain the pipe fitting after completing the final welding operation. Through the reasonable coordination of the above structures, the penetration depth and welding quality of the weld are effectively improved.

[0050] refer to Figure 1 and Figure 2, the spiral coiling tube mechanism 1 includes a forming frame 11, a coil material roller group 12 and a driving module 13. The coil material roller group 12 includes a main forming roller 121, a guiding roller 122, a pressure roller 123 and a rounding supporting roller 124 which are arranged in parallel. The main forming roller 121 is fixed on the forming frame 11. The guiding roller 122 is slidably connected to the forming frame 11 in the vertical direction and is located above the main forming roller 121. The initial bending angle of the steel plate can be controlled by adjusting the height of the guiding roller 122. The pressure roller 123 is located on the side of the main forming roller 121 away from the guiding roller 122, and the guiding roller 122 is slidably connected to the forming frame 11, which is used to apply a lateral pressure to the steel plate to ensure that it closely adheres to the surface of the main forming roller 121. The rounding supporting roller 124 is slidably arranged on the periphery of the main forming roller 121, which is used to assist in correcting the roundness of the steel plate to form a stable spiral shape. In this embodiment, there are specifically two rounding supporting rollers 124, and both rounding supporting rollers 124 are located below the main forming roller 121. The guiding roller 122 and the pressure roller 123 are each equipped with a mounting support, and both the guiding roller 122 and the pressure roller 123 are rotatably connected to the corresponding mounting supports.

[0051] Reference Figure 2 , the driving module 13 includes a first cylinder 131 and a second cylinder 132. The first cylinder 131 is fixed on the forming frame 11, and one end of the telescopic rod of the first cylinder 131 is connected to the mounting support corresponding to the guiding roller 122 to drive the guiding roller 122 to slide in the vertical direction. One end of the telescopic rod of the second cylinder 132 is connected to the mounting support corresponding to the pressure roller 123 to drive the pressure roller 123 to slide towards or away from the main forming roller 121, so as to achieve precise control of the steel plate. In this embodiment, there are specifically two first cylinders 131 and two second cylinders 132.

[0052] In other embodiments, the main forming roller 121 and the rounding supporting roller 124 can also be slidably connected to the forming frame 11 to meet different processing requirements.

[0053] Reference Figure 2 and Figure 3 , the bevel processing mechanism 2 includes a grooving convex ring 21 and a receiving ring 22. One end of the pressure roller 123 is integrally formed with a mounting short post, and the receiving ring 22 is sleeved and fixed at the mounting short post; the cross section of the grooving convex ring 21 tapers away from its own axis and can be selected as V-shaped or trapezoidal, which is used to press out a corresponding bevel shape at the butt joint of the steel plate edge. One end of the main forming ring close to the grooving convex ring 21 is integrally formed with a connecting short post, and the grooving convex ring 21 is sleeved and fixed at the connecting short post. A mating ring groove 221 for accommodating the grooving convex ring 21 is machined on the outer side wall of the receiving ring 22 to ensure tight fit between the two. In this embodiment, the grooving convex ring 21 is made of cemented carbide material, and the receiving ring 22 is made of cast iron material.

[0054] Reference Figure 1 and Figure 4 As shown in FIGS. Figure 1 and Figure 4 , the welding mechanism 3 includes a welding frame 33, a wire feeding device 31 and a welding gun 32. The wire feeding device 31 is connected to the welding frame 33. The wire feeding device 31 includes a wire spool 34, a wire feeding assembly and a wire feeding tube 311. The wire spool 34 is rotatably connected to the welding frame 33, and a welding wire is wound around the wire spool 34. The wire feeding assembly is located between the wire spool 34 and the wire feeding tube 311. The wire feeding assembly includes two wire feeding rollers 312 rotatably connected to the welding frame 33. A servo motor 313 for driving one wire feeding roller 312 to rotate is also fixed on the welding frame 33. The wire feeding tube 311 is fixed on the welding frame 33, and one end of the wire feeding tube 311 is arranged towards the axis of the main forming roller 121. One end of the welding wire on the wire spool 34 passes between the two wire feeding rollers 312 and then continues to pass through the wire feeding tube 311 and is located on one side of the pipe fitting. The welding gun 32 is fixed on the welding frame 33, located on one side of the wire feeding tube 311, and the heating end of the welding gun 32 is arranged towards the opening of the wire feeding tube 311 away from the wire feeding rollers 312. It can ensure that the welding wire is accurately sent to the weld, improving the welding effect. A protective cover 4 is sleeved outside the welding mechanism 3, and the protective cover 4 is fixedly connected to the welding frame 33. Refer to FIGS. Figure 1 and Figure 5 . Figure 1 and Figure 5 One end of the protective cover 4 is provided with a feeding port 41, and the other end is provided with a discharging port 42. The feeding port 41 and the discharging port 42 are arranged opposite to each other for the pipe fitting to enter and exit.

[0055] Reference Figure 1 and Figure 4 As shown in FIGS. Figure 1 and Figure 4 , a weld correction mechanism 5 is arranged between the welding mechanism 3 and the spiral pipe coiling mechanism 1. The weld correction mechanism 5 includes a weld monitor 51 and a stop seat 52. The weld monitor 51 is located on one side of the stop seat 52 close to the spiral pipe coiling mechanism 1 and is used to monitor the gap size of the weld on the pipe fitting. The stop seat 52 includes a pipe inlet frame body 521, a supporting roller 523 and a stop clamp 524. A pipe inlet channel 5211 is machined on the pipe inlet frame body 521. A supporting support 522 is fixed at the bottom of the pipe inlet frame body 521. The supporting roller 523 is rotatably connected to the supporting support 522 through a rotating shaft, realizing the rotational connection of the supporting roller 523 in the pipe inlet channel 5211, and the axis of the supporting roller 523 is perpendicular to the moving direction of the pipe fitting. The supporting roller 523 is used to support and guide the pipe fitting into the welding area.

[0056] Reference Figure 4, the stop clamp 524 includes stop rollers 5241 disposed on both sides of the carrier roller 523. The two stop rollers 5241 are disposed opposite to each other, and a driving source 5242 for driving the two stop rollers 5241 to slide relatively is fixed on the stop machine base 52. Specifically, there are two driving sources 5242, and the driving sources 5242 correspond to the stop rollers 5241 one by one. In this embodiment, the driving source 5242 adopts a hydraulic cylinder, which has a large driving force to ensure that the stop rollers 5241 can firmly clamp the pipe fitting. The weld monitor 51 is electrically connected to a control system, and the driving source 5242 is also electrically connected to the control system. In this embodiment, the weld monitor 51 specifically adopts a laser rangefinder or a vision sensor, which can detect the weld gap size in real time and feed the data back to the control system. When it is detected that the weld gap exceeds the set range, the control system will automatically trigger the stop clamp 524 to clamp a part of the pipe section of the pipe fitting, so that the clamped part of the pipe fitting stops moving, while the spiral pipe coiling mechanism 1 still continuously coils and discharges the pipe, resulting in a horizontal displacement difference at both ends of the pipe fitting that has not been welded, making the gap between the misaligned welds smaller, thereby compensating for the weld misalignment problem caused by the processing of the bevel.

[0057] The weld correction mechanism 5 detects and adjusts the weld gap on the pipe fitting before welding to ensure that the weld quality meets the requirements. Compared with the prior art, this embodiment effectively avoids the welding quality problems caused by too large weld gaps and further improves the reliability of welding.

[0058] Reference Figure 4 and Figure 5 , the discharging mechanism includes a discharging bar frame 6, a carrying component 7 and a cutting device 8. One end of the discharging bar frame 6 is close to the protective cover 4, and the other end extends horizontally away from the protective cover 4. The carrying component 7 includes a carrying support 72 and a carrying frame 71. The carrying frame 71 is located on the side of the protective cover 4 close to the cutting device 8. The carrying frame 71 includes a carrying frame body 712 and a pipe pressing roller group. A pipe passing channel 711 is provided on the carrying frame body 712. The pipe pressing roller group 713 includes two relatively arranged pipe pressing rollers 713, and each pipe pressing roller 713 is also equipped with an installation support; the installation support corresponding to the pipe pressing roller 713 is fixed on the carrying frame body 712, and the two pipe pressing rollers 713 are rotatably connected to the pipe passing channel 711 through the installation supports. The carrying support 72 is located on the side of the cutting device 8 away from the carrying frame 71, and a plurality of carrying supports 72 are arranged at intervals along the discharging bar frame 6. Each carrying support 72 includes a support body 721 and a carrying roller 722 rotatably connected to one end of the support body 721. The axis of the carrying roller 722 is perpendicular to the movement direction of the pipe fitting.

[0059] Reference Figure 5, the cutting device 8 includes a cutting machine frame 81, a swing frame 82, and a cutting tool 831. The swing frame 82 is rotatably connected to the top end of the cutting machine frame 81 through a rotating shaft, and the cutting tool 831 is rotatably connected to the cutting tool 831 at one end of the swing frame 82 through a rotating shaft. A power source 832 is also provided on the swing frame 82. In this embodiment, the power source 832 is selected as an electric motor. A force application source 84 is also provided on the cutting machine frame 81. The force application source 84 is specifically provided as a force application cylinder; one end of the force application cylinder is hinged to the bottom end of the cutting machine frame 81, and the other end is hinged to the swing frame 82; when the force application cylinder expands and contracts, it can drive the swing frame 82 to rotate, so that the swing frame 82 drives the cutting tool 831 to approach or move away from the pipe fitting.

[0060] The discharging mechanism supports and cuts the pipe fittings after welding is completed to ensure the continuity of the production process. Compared with the prior art, this embodiment not only improves the production efficiency, but also reduces manual intervention and lowers the labor intensity.

[0061] Reference Figure 1 and Figure 6 , at the end of the discharging bar frame 6, that is, at the end of the discharging bar frame 6 away from the welding machine frame 33, a positioning base 9 is provided. The positioning base 9 includes a positioning frame body 91 and a positioning baffle 92 fixed to one side of the positioning frame body 91. The bottom of the positioning frame body 91 is connected with pulleys, and the positioning base 9 is slidably connected to the discharging bar frame through the pulleys. A locking member 93 for locking itself is also provided on the positioning base 9. In this embodiment, the locking member 93 is specifically provided as a brake on the pulley. In other embodiments, the locking member 93 can also adopt an electromagnetic lock to achieve the locking function through energization and suction. A distance measuring instrument 10 is also fixed on one side of the positioning base 9. The distance measuring instrument 10 is used to detect the distance between the positioning base 9 and the cutting device 8. The distance measuring instrument 10 adopts a laser distance measuring instrument 10, which can detect the distance between the positioning base 9 and the cutting device 8 in real time and feed the data back to the control system to ensure the cutting accuracy.

[0062] The implementation principle of a pipe rolling and welding device based on spiral seam steel-plastic composite pipes in an embodiment of the present application is as follows: The coiled steel plate is unrolled and fed into the production line through the uncoiling device. Through the precise control of the spiral pipe rolling mechanism 1, it is ensured that the steel plate maintains a stable state during the bending process; the groove processing mechanism 2 processes a suitable groove shape at the weld to increase the effective bonding area of the weld; the weld correction mechanism 5 compensates for the weld misalignment caused by processing the groove, and then the welding mechanism 3 is started to complete the welding operation, significantly improving the penetration depth and welding quality of the weld of the processed pipe fittings. When the fed pipe fitting abuts against the positioning baffle 92, the spiral pipe rolling mechanism 1, the groove processing mechanism 2, and the welding mechanism 3 all stop operating, and the cutting device 8 cuts the pipe fitting to obtain a pipe fitting with a suitable size. This embodiment not only solves the problem of insufficient weld penetration depth, but also reduces the need for subsequent grinding treatment, lowers the production cost, and improves the production efficiency.

[0063] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A pipe rolling and welding device based on a spiral-seam steel-plastic composite pipe, characterized in that Comprising: A spiral coiling tube mechanism (1), including a forming frame (11), a coil material roller set (12) arranged on the forming frame (11), and a driving module (13). The coil material roller set (12) includes a main forming roller (121), a guiding roller (122), a pressure roller (123), and a roundness correcting supporting roller (722) that are parallel to each other. The guiding roller (122) is slidably arranged above the main forming roller (121) in the vertical direction. The pressure roller (123) is slidably arranged on one side of the main forming roller (121). The roundness correcting supporting roller (722) is slidably arranged on the periphery of the main forming roller (121). The driving module (13) is used to drive the guiding roller (122) to slide in the vertical direction and is also used to drive the pressure roller (123) to slide towards or away from the main forming roller (121). A bevel processing mechanism (2), including a grooving convex ring (21) and a receiving ring (22). The grooving convex ring (21) is sleeved and fixed at one end of the main forming roller (121). The receiving ring (22) is sleeved and fixed at one end of the pressure roller (123). A mating ring groove (221) for accommodating the grooving convex ring (21) is arranged on the receiving ring (22). A welding mechanism (3), which is used for welding a weld seam. A weld seam correction mechanism (5) is also provided. The weld seam correction mechanism (5) is located on the side of the welding mechanism (3) close to the spiral coiling tube mechanism (1). The weld seam correction mechanism (5) includes a weld seam monitor (51) and a stop seat (52). The weld seam monitor (51) is located on one side of the stop seat (52) and is used for monitoring the size of the weld seam gap. The stop seat (52) includes an inlet pipe frame body (521), a supporting roller (523), and a stop clamp (524). An inlet pipe channel (5211) is arranged on the inlet pipe frame body (521). The supporting roller (523) is rotatably arranged in the inlet pipe channel (5211). The stop clamp (524) includes stop rollers (5241) arranged on both sides of the supporting roller (523). The two stop rollers (5241) are arranged oppositely, and a driving source (5242) for driving the two stop rollers (5241) to slide relatively is arranged on the stop seat (52).

2. The coiling and welding equipment for spiral-seam steel-plastic composite pipes according to claim 1, wherein, The welding mechanism (3) includes a wire feeding device (31) and a welding gun (32). The wire feeding device (31) includes a wire feeding pipe (311). One end of the wire feeding pipe (311) is arranged towards the axis of the main forming roller (121). The welding gun (32) is arranged on one side of the wire feeding pipe (311).

3. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 2, wherein, A protective cover (4) is sleeved outside the welding mechanism (3). An inlet opening (41) and an outlet opening (42) are opened on the protective cover (4).

4. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 3, characterized in that, An outlet mechanism is also included. The outlet mechanism includes an outlet bar frame (6), a supporting component (7) arranged on the outlet bar frame (6), and a cutting device (8). The carrier assembly (7) includes carrier supports (72), and a plurality of the carrier supports (72) are arranged at intervals along the discharge bar rack (6). The carrier support (72) includes a support body (721) and a carrier roller (722) rotatably connected to one end of the support body (721). The axis of the carrier roller (722) is perpendicular to the movement direction of the pipe fitting. The cutting device (8) is used for cutting the pipe fitting.

5. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 4, wherein, The carrier assembly (7) further includes a carrier frame (71), and the carrier frame (71) is located on the side of the protective cover (4) close to the cutting device (8). The carrier frame (71) includes a carrier frame body (712) and a set of pipe-holding rollers (713). A pipe-passing channel (711) is provided on the carrier frame (71). The set of pipe-holding rollers (713) includes two relatively arranged pipe-holding rollers (713), and the pipe-holding rollers (713) are rotatably arranged in the pipe-passing channel (711).

6. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 4, characterized in that, The cutting device (8) includes a cutting frame (81), a swing frame (82) rotatably arranged at one end of the cutting frame (81), and a cutting tool (831) rotatably arranged at one end of the swing frame (82). A power source (832) is further provided on the swing frame (82), and the power source (832) is used to drive the cutting tool (831) to rotate. A force application source (84) is provided on the cutting frame (81), and the force application source (84) is used to drive the swing frame (82) to rotate.

7. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 4, characterized in that, A positioning base (9) is provided on the discharge bar rack (6), and the positioning base (9) is close to the end of the discharge bar rack (6). The positioning base (9) includes a positioning frame body (91) and a positioning baffle (92) fixed to one side of the positioning frame body (91).

8. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 7, wherein, The positioning frame body (91) is slidably arranged on the discharge bar rack (6), and a locking member (93) for locking the positioning frame body (91) is further provided on the discharge bar rack (6).

9. The pipe rolling and welding equipment based on a spiral-seam steel-plastic composite pipe according to claim 8, characterized in that, A distance measuring instrument (10) is provided on one side of the positioning base (9), and the distance measuring instrument (10) is used to detect the distance between the positioning base (9) and the cutting device (8).

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