Socket and spigot joint pipeline structure and machining equipment

Abstract

The invention discloses a socket pipeline structure and machining equipment, and relates to the field of metal composite pipeline welding, the socket pipeline structure comprises an inner pipe body, the outer surface of the inner pipe body is sleeved with an outer pipe body, a plurality of inclined outer grooves are formed in the surface of the inner pipe body, and sealing rubber rings are arranged in the inclined outer grooves; vibration reduction inner walls are arranged at the positions, located at the multiple inclined outer grooves, in the inner pipe body; a welding flaring is formed in the tail end of one side, facing the inner pipe body, of the outer pipe body; a pipeline necking is formed in the other end, located at the welding flaring, of the outer pipe body; comprising a machining shell, a feeding groove is formed in the surface of the machining shell, a first forming template is movably arranged on one side in the machining shell, a second forming template is movably arranged at the position, located on one side of the first forming template, in the machining shell, and a forming mechanism is arranged at the position, located between the first forming template and the second forming template, in the machining shell. The socket pipe is easy and convenient to install and operate, effective sealing is formed, meanwhile, the pipe is integrally formed and machined, sufficient rigidity is achieved, and the requirement for quick installation of the pipe is met.

Description

Technical Field

[0001] The present invention relates to metal composite pipe welding, and more specifically to the field of welded pipe splicing, and in particular to a socket pipe structure and processing equipment. Background Art

[0002] With the development of industry, single metal pipes are difficult to meet the needs of complex working conditions. For example, the media transported in the petrochemical industry are often high temperature, high pressure, and highly corrosive. Traditional carbon steel pipes are prone to corrosion and perforation, while pure stainless steel pipes are too expensive. Metal composite pipes combine carbon steel (base pipe) with stainless steel and nickel-based alloys (liner pipes), taking into account both strength and corrosion resistance, making them a more cost-effective solution. Existing metal composite pipes usually use threaded connections during installation, which makes the installation of large pipes extremely inconvenient and unable to form an effective seal. At the same time, the existing pipe processing equipment needs to first roll the surface of the metal plate into a pattern, and then form the pipe model by bending and welding. This process is too cumbersome. Multiple processing results in insufficient pipe rigidity, which cannot meet the basic requirements for quick pipe installation. Summary of the Invention

[0003] In order to improve the problems that the installation operation of conventional socket-and-spigot pipes is inconvenient, effective sealing cannot be formed, and multiple pipe processing leads to insufficient rigidity and cannot meet the requirements of quick pipe installation, the present invention provides a socket-and-spigot pipe structure and processing equipment.

[0004] The present invention provides a socket-and-spigot pipe structure and processing equipment that adopts the following technical solutions: A socket-and-spigot pipe structure comprises an inner pipe body, an outer pipe body being sleeved on the outer surface of the inner pipe body, and the inner pipe body and the outer pipe body being coaxially connected by axial plugging, a plurality of inclined outer grooves being formed on the surface of the inner pipe body, a sealing rubber ring being provided in the plurality of inclined outer grooves and abutting against the inner wall of the outer pipe body, and a vibration-damping inner wall for buffering fluid impact being provided in the plurality of inclined outer grooves within the inner pipe body; The outer tube body is provided with a welding flare for welding and fixing the seal at one end facing the inner tube body, and a pipe neck is provided at the other end of the outer tube body at the welding flare. The outer wall of the outer tube body is provided with an inclined neck on the side of the pipe neck that fits the outer surface of the inner tube body.

[0005] By adopting the above technical solution, the installation is facilitated by transverse insertion of the inner tube body and the outer tube body, and as the inner tube body is inserted into the outer tube body, the opening of the inclined outer groove provides space for the installation of the sealing rubber ring, and the sealing rubber ring is fixed on the surface of the inner tube body while maintaining the abutment state between the sealing rubber ring and the outer tube body to form a seal. At the same time, the connection between the inner tube body and the outer tube body increases the fit through the inclined surface, and the arrangement of multiple vibration-damping inner walls inside the pipeline absorbs the vibration force transmitted by the fluid turbulence, thereby improving the overall stability of the pipeline.

[0006] Preferably, the inner tube body and the outer tube body are coaxially connected by axial plugging, and both the inner tube body and the outer tube body are configured as a bimetallic composite pipe structure.

[0007] By adopting the above technical solution, the straight-tube socket-type connection between the inner tube body and the outer tube body makes it easy to perform the lateral plug-in operation when the inner tube body is inserted into the outer tube body, thereby maintaining a sealed and fixed state. At the same time, the bimetallic composite pipe structure provides rigidity for the connection between the inner tube body and the outer tube body, thereby maintaining stability.

[0008] A processing device for a socket-and-spigot pipe, used for the above-mentioned socket-and-spigot pipe structure, includes a processing shell, a surface of the processing shell is provided with a feed trough for receiving a processing material sheet for forming, a forming template 1 is movably provided on one side of the interior of the processing shell, a forming template 2 for pushing the processing material sheet is movably provided on one side of the forming template 1 within the processing shell, and a forming mechanism for extruding the processing material sheet is provided between the forming templates 1 and 2 within the processing shell.

[0009] By adopting the above technical solution, forming template 1 and forming template 2 form a mold groove for processing the pipe, and then the forming mechanism expands, extrudes and bends the processed material plate to form it into a pipe state. At the same time as automated production, the one-piece molding makes the inner pipe body have sufficient rigidity, so that it is suitable for the horizontal socket installation method.

[0010] Preferably, the forming mechanism includes a drive shell rotatably arranged on both sides of the processing shell, a plurality of connecting strips are fixed between the two drive shells, a rotation hole is opened through the middle of the side surfaces of the two drive shells, and a limiting ring groove is opened around the rotation hole in the two drive shells, and a mounting ring hole is opened around the two limiting ring grooves.

[0011] By adopting the above technical solution, the connecting strips fix the driving shells on both sides to form a whole. At the same time, the limiting ring grooves opened on the side surfaces of the driving shells provide guidance and limiting functions for the movement of the moving rod, and the opening of the mounting ring holes provides a fixed point for the installation of the guide core.

[0012] Preferably, an extension main rod is inserted in each of the two rotating holes, one end of the extension main rod passes through the outer surface of the processing shell and is connected to the first motor, the outer surface of the processing shell is provided with a discharge port around the first motor, an extension cavity is provided inside the extension main rod, and the extension cavity is provided with multiple through grooves passing through the outer surface of the extension main rod, the extension cavity is located on one side of the first motor and is connected to the outside with a connection port, and an electromagnetic clutch is fixed in the middle of the inner wall of the connection port.

[0013] By adopting the above technical solution, the first motor drives the extension main rod to rotate, and the extension cavity opened inside the extension main rod provides rotation space for the movement of the subsequent threaded rod. At the same time, the extension main rod is subject to the on-off setting of the electromagnetic clutch, asynchronously driving the threaded rod to rotate, thereby forming a step-by-step expansion action.

[0014] Preferably, a threaded rod is rotatably arranged in the extension cavity, a plurality of limiting surfaces are arranged on the surface of the threaded rod, a movable seat is threadedly connected to one side of the threaded rod surface located at the plurality of limiting surfaces, a rotating rod is rotatably arranged at the position of the movable seat located at the plurality of through-grooves, and a fixed template is rotatably arranged at the end of the rotating rod in the plurality of through-grooves.

[0015] By adopting the above technical solution, the threaded rod rotates in the extension cavity, so that the multiple movable seats move in opposite directions along the surface of the threaded rod. The movement of the movable seat drives the bottom of the rotating rod to move, and the top of the rotating rod is rotatably connected to the fixed template, so that the rotating rod as a whole and the threaded rod are turned from an inclined state to a vertical state, thereby pushing the fixed template to be ejected outward to fix the processed material plate.

[0016] Preferably, an extension plate is fixedly provided on one side of the surface of the extending main rod located on multiple through grooves, and multiple surfaces of the extension plates are rotatably connected to a rotating plate, and multiple tops of the rotating plates are fixed with filling templates, and multiple moving rods are rotatably provided on both sides of the rotating plates, and multiple moving rods are extended from the mounting ring holes, and fixed blocks are fixed at the extended ends.

[0017] By adopting the above technical solution, the extension main rod drives the expansion plate to rotate, and the rotation of the expansion plate applies a lateral thrust to the rotating plate, so that the rotating plate rotates with the expansion as the center, and then drives multiple filling templates to tilt and rotate outward to form an overall circular expansion action.

[0018] Preferably, a guide core is fixedly provided around and through the two mounting ring holes, and the guide core is movably connected to the plurality of movable rods.

[0019] By adopting the above technical solution, the guide core is located in the installation ring hole, and thus the whole is located in the limiting ring groove in a ring-shaped arrangement, thereby ensuring that the moving rod moves along the limiting ring groove when moving, forming a limiting and guiding effect.

[0020] Preferably, a movable cavity is provided in the processing shell at the other side of the discharge port, and transverse grooves are provided on the inner wall of the processing shell at the positions of forming template 1 and forming template 2. Moving blocks fixed to forming template 1 and forming template 2 are movably provided in the transverse grooves on both sides, and one side of the transverse grooves on both sides is connected to the movable cavity.

[0021] By adopting the above technical solution, the moving block moves in the transverse groove, thereby forming a limit for the movement of forming template 1 and forming template 2, preventing forming template 1 and forming template 2 from rotating and offsetting during movement, thereby affecting the forming of the processed material plate.

[0022] Preferably, a screw rod threadably connected to the movable block is rotatably provided at the position of the transverse groove in the movable cavity, a third motor fixed to the screw rod is fixed on one side of the outer surface of the processing shell, a second motor is fixed below the screw rod in the movable cavity, the output end of the second motor is movable through the processing shell and is fixed to the drive shell, and a pushing mechanism for pushing out the processing material plate is fixed at the bottom of the second motor in the movable cavity.

[0023] By adopting the above technical solution, the third motor drives the screw to rotate, thereby causing the two moving blocks to move toward each other, and then drives the forming template 1 and the forming template 2 to move toward each other to squeeze and release the processed material sheet. At the same time, the second motor drives the drive shell located inside the forming template 1 and the forming template 2 to rotate, thereby frictionally squeezing the processed material sheet to provide power for the forming of the processed material sheet. At the same time, the pushing mechanism pushes the processed material sheet to be discharged to the outside after processing to form an automated operation.

[0024] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The inner and outer tubes are connected in a straight socket-and-socket manner, making the horizontal plugging operation simple when the inner tube is inserted into the outer tube. At the same time, when the inner tube is inserted into the outer tube, the interaction force generated by the pipe necking, the inclined surface, and the inclined outer groove structure causes deformation and friction on the inner and outer tubes, thereby maintaining a seal while maintaining a fixed state, achieving a highly sealed and efficient connection method without the need for external fasteners, significantly improving installation convenience and sealing reliability; 2. A mold groove is formed by forming template 1 and forming template 2, and then the fixed template and the filling template are expanded to fix the processing plate first. As the fixed template and the filling template continue to expand, a smooth arc surface is formed, thereby bending and squeezing the processing plate, so that the processing plate is formed into an inner tube structure. After the processing is completed, the processing plate is discharged to the outside by the pushing mechanism. The entire process is automated, and the inner tube is extruded as a whole, so that the inner tube has sufficient rigidity and is suitable for a convenient socket connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of a pipeline explosion according to the present invention; Figure 2 This is a schematic diagram of pipeline connection according to the present invention; Figure 3 It is a three-dimensional schematic diagram of the processing equipment of the present invention; Figure 4It is a schematic cross-sectional view of the left side of the processing equipment of the present invention; Figure 5 This is a schematic diagram of the internal connection of the active cavity of the present invention; Figure 6 It is a three-dimensional schematic diagram of the forming mechanism of the present invention; Figure 7 This is a schematic diagram of the internal explosion of the molding mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the drive housing and expansion board of the present invention; Figure 9 It is a schematic diagram of the structure of the extending main rod of the present invention.

[0026] Reference numerals: 1, inner tube; 2, outer tube; 3, processed shell; 4. Molding mechanism; 41. Drive housing; 411. Connecting strip; 412. Limiting ring groove; 413. Rotation hole; 414. Mounting ring hole; 42. Extension main rod; 421. Connecting port; 422. Electromagnetic clutch; 423. Extension cavity; 424. Threaded rod; 425. Moving seat; 426. Rotating rod; 427. Positioning smooth surface; 428. Fixed template; 429. Through slot; 43. Extension plate; 431. Rotating plate; 432. Moving rod; 433. Fixed block; 434. Guide core; 435. Filling template; 44. First motor; 5. Pipe shrinkage; 6. Inclined shrinkage surface; 7. Welding expansion; 8. Inclined outer groove; 9. Vibration-damping inner wall; 10. Sealing rubber ring; 11. Processing plate; 12. Feed chute; 13. Discharge port; 14. Forming template 1; 15. Forming template 2; 16. Transverse groove; 17. Movable cavity; 18. Screw; 19. Moving block; 20. Pushing mechanism; 21. Second motor; 22. Third motor. DETAILED DESCRIPTION

[0027] The following is combined with Figures 1-9 The present invention is described in further detail.

[0028] The embodiments of the present invention disclose a socket-and-spigot pipe structure and processing equipment.

[0029] Reference Figure 1 、 Figure 2, a socket pipe structure, including an inner tube body 1, an outer tube body 2 is provided on the surface of the inner tube body 1 in a socket-shaped manner, a plurality of inclined outer grooves 8 are opened on the surface of the inner tube body 1, and the inclination angle of the inclined outer grooves 8 is set between 10-15 degrees, and a sealing rubber ring 10 is surrounded in the plurality of inclined outer grooves 8 (the sealing rubber ring 10 is made of fluororubber or polytetrafluoroethylene, suitable for working conditions of -40°C to +200°C, and resistant to strong acid and alkali corrosion), the outer surface of the sealing rubber ring 10 is squeezed and fitted with the inner wall of the outer tube body 2, and at the same time, a vibration-damping inner wall 9 is protruded from the inner surface of the inner tube body 1 at the position of the plurality of inclined outer grooves 8. The vibration-damping inner wall 9 is made of elastic material, and the inner surface is spirally corrugated and arranged around the inner tube body 1, thereby forming an outward diffusion force through the circular structure, improving the supporting strength of the inner tube body 1, and absorbing impact energy through deformation during fluid turbulence, thereby reducing vibration propagation; The inner tube body 1 and the outer tube body 2 are both configured as composite plates composed of two layers of stainless steel plates sandwiching a layer of base high-strength steel, thereby forming a bimetallic composite pipe structure.

[0030] A welding flare 7 is provided at the end of the side of the outer tube body 2 facing the inner tube body 1. The welding flare 7 is opened outward so that there is an opening when the outer tube body 2 is connected to the inner tube body 1, which facilitates the welding process along the opening position, thereby improving the connection stability between the inner tube body 1 and the outer tube body 2, and cooperates with the sealing rubber ring 10 to assist in improving the sealing of the pipeline connection. A pipe neck 5 is provided at the other end of the side surface of the outer tube body 2 away from the welding flare 7. The pipe neck 5 shrinks inward so that the radius is smaller than the inner tube body 1 to form a closed state, limiting the socket of the inner tube body 1 to prevent the inner tube body 1 from being inserted out of one end of the pipe neck 5, and reducing the inflow of external fluid into the space to assist in increasing the turbulence intensity of the fluid; A tapered surface 6 is provided on the inner wall of the outer tube body 2 near the pipe neck 5, and the inclination amplitude is set at 15°. When the inner tube body 1 and the outer tube body 2 are connected by socket, the tapered surface 6 is squeezed by the inner tube body 1 to produce synchronous deformation, so that the surface fits the outer surface of the inner tube body 1, thereby improving the tightness of the connection between the inner tube body 1 and the outer tube body 2. The inner tube body 1 is inserted into the pipe neck 5 of the outer tube body 2 from one end, and is automatically centered through the conical guidance of the tapered surface 6. It is pressed together with the sealing rubber ring 10 to form a primary seal, and is inserted into the welding expansion 7 to complete the end limit and welding fixation.

[0031] It should be noted that the socket connection structure achieves sealing and anti-falling through a triple mechanism: first, the inclined outer groove 8 cooperates with the elastic sealing rubber ring 10 to provide primary sealing; second, the welded flared opening 7 of the outer tube body is reinforced with end fixation by ring welding; third, the pipe neck 5 and the inclined shrinkage surface 6 generate limiting and frictional fitting forces on the inner tube body to prevent the inner tube body 1 from loosening or being pushed out by the fluid impact, thereby achieving multiple sealing and stable locking structure. Example

[0032] Reference Figure 3 、 Figure 4 、 Figure 5 , a processing equipment for a socket-and-spigot pipe, used for the above-mentioned socket-and-spigot pipe structure, includes a processing shell 3, the top of the processing shell 3 is in an arc-shaped cover state, and one side of the arc cover is opened to connect to the interior of the processing shell 3, a feed trough 12 is provided on the surface of the processing shell 3, and an arc-shaped guide groove is provided on the inner wall of the feed trough 12 (the arc amplitude is consistent with the outer shape amplitude of the inner tube body 1), and a processing plate 11 is placed on one side of the surface of the feed trough 12 (the processing plate 11 is formed by hot-rolling a combination of multi-layer composite plates, which has high strength and can be welded and hot-processed), and at the same time, two rectangular transverse grooves 16 are provided on both sides of the inner wall of the processing shell 3 at the bottom of the arc cover, wherein a forming template 14 is movably set in the two transverse grooves 16 aligned on one side, and a forming template 2 15 is movably set in the two transverse grooves 16 aligned on the other side, and a moving block 19 is fixed in the transverse groove 16 on both sides of the forming template 14 and the forming template 2 15, and the width and height of the moving block 19 are consistent with the transverse groove 16 to form a movable abutment state; It should be noted that the forming template 14 and the forming template 2 15 are semicircular as a whole, and the inner surface of the circle is provided with a groove that fits the outer shape of the inner tube body 1. When the forming template 14 and the forming template 2 15 are in contact, the two grooves are merged to form an annular groove, forming a mold groove for receiving the extrusion force. At the same time, an L-shaped extension plate is extended along the direction of the processing material plate 11 on one side of the forming template 2 15, and the L-bending part of the extension plate covers and gathers the processing material plate 11, so that when the forming template 2 15 moves, it drives the processing material plate 11 to move synchronously. The length of the processing material plate 11 is smaller than the circumference of the inner tube body 1 by 1 to 2 cm, ensuring that there is a gap in the pipe formed after the processing of the processing material plate 11, so that it can be discharged to the outside, and after the processing of the processing material plate 11 is completed, a welding mechanism needs to be set to weld the gap in the pipe to form the integrity of the pipe.

[0033] Reference Figure 4 、 Figure 5 A movable cavity 17 is provided inside the processing shell 3 on one side of the forming template 14 and the forming template 2 15. Two transverse grooves 16 close to one side of the movable cavity 17 penetrate the side wall and communicate with the inside of the movable cavity 17. At the same time, a screw rod 18 is rotatably provided on the inner wall of the movable cavity 17 at the through-mouth of the two transverse grooves 16, and the surface of the screw rod 18 is threadedly connected to the two moving blocks 19 (the internal threads of the two moving blocks 19 are opposite to each other, thereby forming relative and toward-each-other movement). A third motor 22 is fixed on the outer surface of the processing shell 3 at the position of the screw rod 18, and the output shaft of the third motor 22 movably penetrates the processing shell 3 and is fixed to one end of the screw rod 18.

[0034] Reference Figure 4 、 Figure 6 、 Figure 8A forming mechanism 4 is provided on the inner surface of the processing shell 3 between the forming template 14 and the forming template 2 15. The forming mechanism 4 includes a driving shell 41 rotatably connected to both sides of the inner surface of the processing shell 3. A plurality of connecting strips 411 are fixed around the opposite side surfaces of the two driving shells 41. A rotating hole 413 is provided in the middle of the opposite side surfaces of the two driving shells 41. At the same time, limiting ring grooves 412 are provided around the rotating holes 413 on the side surfaces of the two driving shells 41. The number of limiting ring grooves 412 is consistent with that of the connecting strips 411, and annular mounting ring holes 414 are penetrated through the inner walls of the multiple limiting ring grooves 412 on the same side, and the mounting ring holes 414 in each limiting ring groove 412 are all in a circular line connected and aligned state.

[0035] It should be noted that a second motor 21 is fixedly installed in the movable cavity 17 at a position aligned with the center of the drive housing 41 , and the output shaft of the second motor 21 movably passes through the side wall and is fixedly connected to the side surface of one of the drive housings 41 .

[0036] Reference Figure 7 、 Figure 8 、 Figure 9 , a rotating hole 413 on the side away from the active cavity 17 passes through the outer surface of the drive housing 41, and an extension main rod 42 is inserted inwardly from the through hole, and both ends of the extension main rod 42 are respectively nested in the opposite rotating holes 413, and a bearing structure is used to realize rotational cooperation with the drive housing 41. At the same time, a first motor 44 is fixed on the side of the outer surface of the processing shell 3 away from the active cavity 17 and aligned with the center of the extension main rod 42 (the first motor 44 type is set to be a stepping motor, so that the output shaft can rotate when the power is cut off). The output shaft of the first motor 44 movably passes through the processing shell 3 and is connected to the inside of the extension main rod 42, and there is a gap at the through hole. An extension cavity 423 is opened in the center of the extension main rod 42, and the extension cavity 423 surrounds and penetrates the surface of the extension main rod 42 to open a plurality of through grooves 429 that are connected to the outside; A threaded rod 424 is rotatably provided on one side of the inner wall of the extension cavity 423, and a plurality of limiting light surfaces 427 are fixed on the surface of the threaded rod 424. At the same time, the surface of the threaded rod 424 is threadedly connected to a movable seat 425 on both sides of the plurality of limiting light surfaces 427, and the plurality of movable seats 425 are separated by the center of the threaded rod 424 to form relative movement on both sides. The surfaces of the plurality of movable seats 425 are rotatably connected to a rotating rod 426, and the other ends of the plurality of rotating rods 426 extend outward from the through groove 429, and the ends of the rotating rods 426 on the same level are rotatably connected to a fixed template 428. The outer surface of the fixed template 428 has the same curvature as the inner surface of the inner tube body 1. Under normal circumstances, the plurality of movable seats 425 are in contact with the limiting light surface 427 toward the center of the threaded rod 424. At this time, the rotating rod 426 is in an inclined state, so that the fixed template 428 is received within the range of the through groove 429.

[0037] A connecting port 421 is provided on the outside of the extension chamber 423 on one side close to the first motor 44, and an electromagnetic clutch 422 is fixedly installed in the middle section of the connecting port 421 (the electromagnetic clutch 422 is normally in a connected state). The rotating disk of the electromagnetic clutch 422 is fixedly connected to the inner wall of the connecting port 421 facing the extension chamber 423, and the fixed disk of the electromagnetic clutch 422 is located on the other side and is fixedly connected to the output end of the first motor 44, and one end of the threaded rod 424 is movably passed through the middle of the movable disk of the electromagnetic clutch 422, thereby being fixedly connected to the access end of the fixed disk of the electromagnetic clutch 422. At the same time, the circuit end of the electromagnetic clutch 422 is located in the through gap of the first motor 44 and extends to the outside to be connected to the power supply equipment.

[0038] It should be noted that the coating and rotation molding process between multiple fixed templates 428, filling templates 435 and the processed material plate 11 is carried out progressively and synchronously, and the spatial constraints of the mold groove are formed by the forming template 1 14 and the forming template 2 15 to achieve stable positioning and multi-point arc surface pressing of the hot processed material plate 11 to form an integrated bending state; the overall transmission is controlled by the first motor 44, and bidirectional extrusion or recovery is achieved through intermittent control of the electromagnetic clutch 422.

[0039] Reference Figure 7 、 Figure 8 、 Figure 9 , multiple mounting ring holes 414 are surrounded by fixed guide cores 434, and the surface of the guide core 434 located in the mounting ring hole 414 is movably plugged with a moving rod 432, and the parts of the two ends of the multiple moving rods 432 located outside the mounting ring hole 414 are fixed with fixed blocks 433, and the width of the fixed blocks 433 is larger than the mounting ring hole 414, so that the two sides of the moving rod 432 are located in the mounting ring hole 414 and move. At the same time, the middle parts of the multiple moving rods 432 are rotatably connected to the rotating plate 431, and the rotating plate 431 is concave as a whole, and the surface of the extending main rod 42 is located in the middle of the concave rotating plate 431. The expansion plate 43 is fixed on the top of the multiple expansion plates 43 and the two sides of the concave inner wall of the rotating plate 431. At the same time, the surface of the multiple rotating plates 431 away from the expansion plate 43 is screwed with a filling template 435, and the curvature of the surface of the multiple filling templates 435 is consistent with the curvature of the inner surface of the inner tube body 1; The width of the filling template 435 in the mid-expansion state is smaller than that of the fixed template 428 , and the width of the filling template 435 in the fully expanded state is equal to that of the fixed template 428 ; It should be noted that the outer surface of the processing shell 3 away from the active cavity 17 is provided with a discharge port 13 around the first motor 44. The overall width of the discharge port 13 is greater than the width of the circular opening formed by the forming template 1 14 and the forming template 2 15, and a circular plate (such as Figure 3As shown), a fixed fulcrum is provided for the installation of the first motor 44, and space is provided for the discharge of the processed material plate 11. At the same time, a pushing mechanism 20 is fixedly provided at the bottom of the second motor 21 in the movable cavity 17. The pushing end of the pushing mechanism 20 is provided with an annular push plate, and the annular push plate is movable through the processing shell 3 and is located between the circular opening formed by the forming template 1 14 and the forming template 2 15 and the circle formed by the multiple filling templates 435. It is connected to the external control system through a line, so as to push the processed material plate 11 to the outside after processing.

[0040] The device also includes an electromagnetic clutch 422, a first motor 44, a propulsion mechanism 20, a second motor 21, and a third motor 22, all of which are conventional technologies. The device coordinates the actions of each actuator through a PLC centralized control module. The third motor 22 drives the screw 18 to rotate; the first motor 44 drives the extension rod 42 to rotate and unfold the fixed template 428 and the filling template 435; the second motor 21 then drives the drive housing 41 to rotate, causing the workpiece 11 to be extruded and molded in the mold slot as the template rotates. The electromagnetic clutch 422 switches between the first motor 44 driving the extension rod 42 and the threaded rod 424, achieving sequential motion control and avoiding power interference.

[0041] The implementation principle of a socket pipe processing equipment in an embodiment of the present invention is: when using this device, the personnel first control the output shaft of the first motor 44 to rotate through the operating system, thereby driving the fixed disk of the electromagnetic clutch 422 to rotate, and the fixed disk of the electromagnetic clutch 422 drives the threaded rod 424 to rotate, so that the multiple moving seats 425 move in opposite directions respectively. As the moving seat 425 moves, a thrust is applied to the bottom of the multiple rotating rods 426, thereby driving the multiple rotating rods 426 from an inclined state to a vertical state, thereby pushing the fixed template 428 to expand outward.

[0042] At the same time, as the fixed disk of the electromagnetic clutch 422 receives the thrust, it drives its own movable disk to rotate synchronously, thereby causing the extension main rod 42 to rotate as a whole. The rotation of the extension main rod 42 drives the expansion plate 43 to rotate, and the rotation of the expansion plate 43 applies thrust to the rotating plate 431, and the rotating plate 431 and the expansion plate 43 are in a rotationally connected state, and the top of the rotating plate 431 is subjected to the pressure of the filling template 435, thereby generating an inclined rotation and outward ejection action, thereby causing the multiple filling templates 435 to be in a rotationally expanded state as a whole, and cooperate with the complete ejection of the fixed template 428 to fill the gaps between the multiple filling templates 435. At this time, the filling template 435 and the fixed template 428 are both expanded to half a state, and the expanded state of the fixed template 428 is larger than the filling template 435 (the fixed template 428 and the filling template 435 are in a synchronous expansion state, so that when the fixed template 428 is expanded from the through groove 429, the filling template 435 also expands outward, thereby avoiding contact between the fixed template 428 and the filling template 435 when they are expanded, thereby causing dislocation).

[0043] The equipment also supports the introduction of a heating step before the mold groove is closed, so that the processing material plate 11 is deformed in a hot state, and then the heated processing material plate 11 is transported to the surface of the processing shell 3 by the conveying device. At this time, the processing material plate 11 is located at the bottom of the L-shaped extension plate of the forming template 2 15. At this time, the output shaft of the third motor 22 rotates to drive the screw 18 to rotate, so that the two moving blocks 19 are located on the surface of the screw 18 and move toward each other, thereby driving the forming template 1 14 and the forming template 2 15 to move toward each other. At this time, the forming template 2 15 drives the processing material plate 11 to move into the arc cover through the L-shaped extension plate. When the forming template 14 abuts the forming template 2 15, the processing material plate 11 moves to the bottom of the filling template 435 and part of the surface of the processing material plate 11 abuts the filling template 435.

[0044] Then the second motor 21 rotates to drive the drive shell 41 to rotate, so that the fixed template 428 and the filling template 435 rotate synchronously as a whole. At this time, one of the fixed templates 428 contacts the surface of the processed material plate 11, and as the rotation occurs, multiple fixed templates 428 contact the surface of the processed material plate 11. At this time, the output end of the first motor 44 is controlled to rotate 90-100°, so that the fixed template 428 and the filling template 435 are expanded for the second time. During the expansion process, the surface of the processed material plate 11 is squeezed, so that the processed material plate 11 is pressed into the mold groove formed by the forming template 1 14 and the forming template 2 15. At the same time, the outer surfaces of the fixed template 428 and the filling template 435 gradually become flush during the continuous expansion process, forming a smooth arc surface. Then, as the fixed template 428 and the filling template 435 drive the processed material plate 11 to rotate in the mold groove, the processed material plate 11 is continuously squeezed to form a deformation and finally form the inner tube body 1.

[0045] At this time, the slit opening at the bottom of the inner tube body 1 is opposite to the circular plate fulcrum at the bottom of the discharge port 13, and then the output end of the first motor 44 rotates in the opposite direction, thereby recovering the fixed template 428 and the filling template 435, and canceling the extrusion of the inner surface of the inner tube body 1. At the same time, the output end of the second motor 21 rotates in the opposite direction, driving the forming template 1 14 and the forming template 2 15 to move in opposite directions, and canceling the extrusion of the outer surface of the inner tube body 1. Finally, the pushing end of the pushing mechanism 20 pushes the side surface of the inner tube body 1 out of the discharge port 13 to the outside.

[0046] The above are merely optional embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A socket-and-spigot pipe structure, characterized in that: The invention comprises an inner tube body (1), wherein the outer surface of the inner tube body (1) is sleeved with an outer tube body (2), a plurality of inclined outer grooves (8) are provided on the surface of the inner tube body (1), a sealing rubber ring (10) is provided in the plurality of inclined outer grooves (8) and is in contact with the inner wall of the outer tube body (2), and a vibration-damping inner wall (9) for buffering fluid impact is provided in the position of the plurality of inclined outer grooves (8) inside the inner tube body (1); The outer tube body (2) is provided with a welding flare (7) at one end facing the inner tube body (1) for welding and fixing the flare, and the outer tube body (2) is provided with a pipe necking (5) at the other end of the welding flare (7). The inner wall of the outer tube body (2) is provided with an inclined necking surface (6) on one side of the pipe necking (5) so as to fit the outer surface of the inner tube body (1).

2. The socket-and-spigot pipe structure according to claim 1, characterized in that: The inner tube body (1) and the outer tube body (2) are coaxially connected by axial plugging, and both the inner tube body (1) and the outer tube body (2) are configured as a bimetallic composite pipe structure.

3. A processing device for a socket-and-spigot pipe, used for a socket-and-spigot pipe structure according to any one of claims 1 to 2, characterized in that: The processing shell (3) comprises a processing shell (3), a surface of which is provided with a feed trough (12) for receiving a processing material plate (11) for forming, a forming template (14) is movably provided on one side of the interior of the processing shell (3), a forming template (15) is movably provided on one side of the forming template (14) in the processing shell (3) for pushing the processing material plate (11), and a forming mechanism (4) for extruding the processing material plate (11) is provided between the forming template (14) and the forming template (15) in the processing shell (3).

4. The processing equipment for socket-and-spigot pipes according to claim 3, characterized in that: The forming mechanism (4) includes a driving shell (41) rotatably arranged on both sides of the interior of the processing shell (3), a plurality of connecting strips (411) are fixedly arranged between the two driving shells (41), a rotating hole (413) is provided through the middle of the side surfaces of the two driving shells (41), and a limiting ring groove (412) is provided through the two driving shells (41) around the rotating hole (413), and a mounting ring hole (414) is provided around and through the two limiting ring grooves (412).

5. The processing equipment for socket-and-spigot pipes according to claim 4, characterized in that: An extension main rod (42) is inserted into each of the two rotating holes (413), one end of the extension main rod (42) passes through the outer surface of the processing shell (3) and is connected to the first motor (44), the outer surface of the processing shell (3) is provided with a discharge port (13) around the first motor (44), an extension cavity (423) is provided inside the extension main rod (42), and the extension cavity (423) is provided with a plurality of through grooves (429) passing through the outer surface of the extension main rod (42), the extension cavity (423) is located on one side of the first motor (44) and is connected to the outside with a connection port (421), and an electromagnetic clutch (422) is fixed in the middle of the inner wall of the connection port (421).

6. The processing equipment for socket-and-spigot pipes according to claim 5, characterized in that: A threaded rod (424) is rotatably provided in the extension cavity (423), and a plurality of limiting light surfaces (427) are provided on the surface of the threaded rod (424). A movable seat (425) is threadedly connected to one side of the plurality of limiting light surfaces (427) on the surface of the threaded rod (424), and a rotating rod (426) is rotatably provided at the position of the plurality of through-grooves (429) on the movable seat (425), and a fixed template (428) is rotatably provided at the end of the rotating rod (426) in the plurality of through-grooves (429).

7. The processing equipment for socket-and-spigot pipes according to claim 6, characterized in that: The surface of the extending main rod (42) is fixedly provided with an expansion plate (43) on one side of the plurality of through grooves (429), the surfaces of the plurality of expansion plates (43) are rotatably connected with a rotating plate (431), the tops of the plurality of rotating plates (431) are fixedly provided with a filling template (435), the two sides of the plurality of rotating plates (431) are rotatably provided with a moving rod (432), the plurality of moving rods (432) are extended from the mounting ring hole (414), and a fixed block (433) is fixedly provided at the extended end.

8. The processing equipment for socket-and-spigot pipes according to claim 7, characterized in that: A guide core (434) is fixedly provided in each of the two mounting ring holes (414) so as to extend through the guide core (434) and to the plurality of movable rods (432) so as to be movably connected therewith.

9. The processing equipment for socket-and-spigot pipes according to claim 8, characterized in that: A movable cavity (17) is provided in the processing shell (3) at the other side of the discharge port (13), and a transverse groove (16) is provided on the inner wall of the processing shell (3) at the positions of the forming template 1 (14) and the forming template 2 (15). A movable block (19) fixed to the forming template 1 (14) and the forming template 2 (15) is movably provided in the transverse grooves (16) on both sides, and one side of the transverse grooves (16) on both sides is connected to the movable cavity (17).

10. The processing equipment for socket-and-spigot pipes according to claim 9, characterized in that: A screw rod (18) threadedly connected to a moving block (19) is rotatably provided in the movable chamber (17) at the position of the transverse groove (16); a third motor (22) fixedly connected to the screw rod (18) is fixedly provided on one side of the outer surface of the processing shell (3); a second motor (21) is fixedly provided below the screw rod (18) in the movable chamber (17); an output end of the second motor (21) is movably passed through the processing shell (3) and fixedly connected to the drive housing (41); a pushing mechanism (20) for pushing out the processing plate (11) is fixedly provided at the bottom of the second motor (21) in the movable chamber (17).

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