Socket and spigot joint forming production line for socket and spigot joint type flexible connector steel pipe

Abstract

The utility model relates to the technical field of steel pipe connector forming, in particular to a socket type flexible connector steel pipe socket forming production line, in socket forming equipment, a socket forming driving mechanism drives socket forming modules to synchronously move towards the outer side in the radial direction of a socket annular support, and then rapid forming of steel pipe sockets can be easily completed; in the bell mouth forming equipment, an outer side forming driving mechanism drives all outer side forming modules to synchronously move towards the inner side in the radial direction of an outer side annular support, and an inner side forming driving mechanism drives all inner side forming modules to synchronously move towards the outer side in the radial direction of an inner side annular support. The rapid forming of the steel pipe socket can be completed; the forming machine is high in mechanization and automation degree, easy to operate and high in forming efficiency, the corresponding contours of the inner side forming module and the outer side forming module can be customized according to actual needs, and rapid forming of complex socket connectors of different structures can be met.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe interface forming technology, specifically a production line for forming socket joints of flexible steel pipes. Background Technology

[0002] To facilitate long-distance transportation by connecting steel pipes, socket-type steel pipes have emerged. One end of a socket-type steel pipe has a socket, and the other end has a spigot. When forming a transport pipeline, the spigot of the first pipe is inserted into the socket of the second pipe, achieving a convenient connection. In existing socket-type steel pipe forming equipment, a socket groove is formed between the upper and lower roller mechanisms. A drive mechanism drives the upper roller mechanism to rotate, causing the steel pipe and the lower roller mechanism to rotate, forming a socket at one end of the steel pipe under the pressure of the socket groove. This equipment forms the socket through rotational groove forming, which is suitable for simple socket structures. However, for complex sockets with multiple inner diameters and uneven surfaces, it is difficult to form, or requires multiple adjustments of the groove for tightening, making operation cumbersome. Furthermore, rotational groove forming is time-consuming and has low production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a production line for forming flexible joint steel pipe sockets, which solves the problems of cumbersome operation and low production efficiency caused by the need for multiple adjustments of the pressure groove to tighten when handling complex socket forming equipment.

[0004] To solve the above problems, the present invention provides the following technical solution:

[0005] A socket-type flexible joint steel pipe socket forming production line includes a conveying track, a transfer device on the conveying track, a socket forming device on one side of the conveying track, and a socket forming device on the other side of the conveying track. The socket forming device and the socket forming device are arranged at intervals along the extension direction of the conveying track.

[0006] The socket forming equipment includes a socket ring support, a socket forming module, and a socket forming drive mechanism. The socket forming module is coaxial with the socket ring support and includes a plurality of socket forming modules arranged in a circumferential array along the socket ring support. The socket forming drive mechanism is connected to the socket forming module to drive each of the socket forming modules to move synchronously inward or outward along the radial direction of the socket ring support.

[0007] The socket forming equipment includes an outer socket forming device and an inner socket forming device. The outer socket forming device includes an outer annular support, an outer forming module, and an outer forming drive mechanism. The outer forming module is coaxial with the outer annular support and includes a plurality of outer forming modules arranged in a circumferential array along the outer annular support. The outer forming drive mechanism is connected to the outer forming module to drive each of the outer forming modules to move synchronously inward or outward along the radial direction of the outer annular support. The inner socket forming device includes an inner annular support... The system comprises a frame, an inner molding module, and an inner molding drive mechanism. The inner molding module is located inside the outer molding module to form a socket molding cavity between the inner molding module and the outer molding module. The inner molding module is coaxial with the outer molding module and the inner annular support. The inner molding module includes a plurality of inner molding modules arranged in a circumferential array along the inner annular support. The inner molding drive mechanism is connected to the inner molding module to drive each inner molding module to move synchronously inward or outward along the radial direction of the inner annular support.

[0008] As described above, in the socket-type flexible interface steel pipe socket forming production line, the outer forming drive mechanism includes an outer forming drive seat and an outer forming drive assembly. The outer forming drive seat is located outside the outer forming module and is coaxially connected to the outer forming module. The inner side of the outer forming drive seat has an inner conical surface, and the outer side of the outer forming module has an outer conical surface that mates with the inner conical surface of the drive seat. The outer forming drive assembly connects the outer forming drive seat and the outer annular support to drive the outer forming drive seat to move axially relative to the outer annular support and to drive each of the outer forming modules to move synchronously radially along the outer annular support.

[0009] As described above, in the socket-type flexible interface steel pipe socket forming production line, an outer conical surface mating structure is provided between the outer forming drive seat and the outer forming module. The outer conical surface mating structure includes an outer second sliding groove extending along the extension direction of the outer conical surface of the module and an outer second sliding block mating with the outer second sliding groove. The outer second sliding groove is provided on either the outer forming drive seat or the outer forming module, and the outer second sliding block is provided on the other. An outer radial mating structure is provided between the outer annular support and the outer forming module. The outer radial mating structure includes an outer first sliding groove extending radially along the outer annular support and an outer first sliding block mating with the outer first sliding groove. The outer first sliding groove is provided on either the outer annular support or the outer forming module, and the outer first sliding block is provided on the other.

[0010] As described above, in the socket-type flexible interface steel pipe socket forming production line, the inner forming drive mechanism includes an inner forming cone and an inner forming drive assembly. The inner forming cone is located inside the inner forming module and is coaxially connected to the inner forming module. The outer side of the inner forming cone has an outer conical surface, and the inner side of the inner forming module has an inner conical surface that mates with the outer conical surface. The inner forming drive assembly connects the inner forming cone and the inner annular support to drive the inner forming cone to move axially relative to the inner annular support and to drive each inner forming module to move synchronously radially along the inner annular support.

[0011] As described above, in the socket-type flexible interface steel pipe socket forming production line, an inner conical surface mating structure is provided between the inner forming cone and the inner forming module. The inner conical surface mating structure includes an inner second sliding groove extending along the extension direction of the outer conical surface of the cone and an inner second sliding block mating with the inner second sliding groove. The inner second sliding groove is provided on either the inner forming cone or the inner forming module, and the inner second sliding block is provided on the other. An inner radial mating structure is provided between the inner annular support and the inner forming module. The inner radial mating structure includes an inner first sliding groove extending radially along the inner annular support and an inner first sliding block mating with the inner first sliding groove. The inner first sliding groove is provided on either the inner annular support or the inner forming module, and the inner first sliding block is provided on the other.

[0012] As described above, the socket forming production line for flexible joint steel pipes further includes a transfer device. The transfer device includes a transfer guide rail, a transfer slide, and a transfer drive assembly. The length direction of the transfer guide rail is parallel to the axial direction of the outer annular support. The transfer slide is movably mounted on the transfer guide rail and connected to the outer socket forming device. The transfer drive assembly is connected to the transfer slide to drive the transfer slide to move the outer socket forming device along the transfer guide rail.

[0013] As described above, in the socket-type flexible interface steel pipe socket forming production line, the socket forming drive mechanism includes a socket forming cone and a socket forming drive assembly. The socket forming cone is located inside the socket forming module and is coaxially connected to the socket forming module. The outer side of the socket forming cone has a socket outer cone surface, and the inner side of the socket forming module has a socket inner cone surface that mates with the socket outer cone surface. The socket forming drive assembly connects the socket forming cone and the socket annular support to drive the socket forming cone to move axially relative to the socket annular support and to drive each of the socket forming modules to move synchronously radially along the socket annular support.

[0014] As described above, in the socket-type flexible joint steel pipe socket forming production line, a socket forming cone and a socket forming module are provided with a socket cone surface mating structure. The socket cone surface mating structure includes a second socket groove extending along the extension direction of the outer cone surface of the socket and a second socket slider that mates with the second socket groove. The second socket groove is provided on either the socket forming cone or the socket forming module, and the second socket slider is provided on the other. A socket annular support and the socket forming module are provided with a socket radial mating structure. The socket radial mating structure includes a first socket groove extending radially along the socket annular support and a first socket slider that mates with the first socket groove. The first socket groove is provided on either the socket annular support or the socket forming module, and the first socket slider is provided on the other.

[0015] As described above, in the socket-type flexible interface steel pipe socket forming production line, the socket annular support is provided with an annular limiting plate, and the inner side of the annular limiting plate is provided with a limiting cone surface. The diameter of the limiting cone surface gradually increases along the axial direction from the end away from the socket forming module to the end close to the socket forming module.

[0016] As described above, in the socket-type flexible joint steel pipe socket forming production line, the socket forming equipment includes a rotating device, which is connected to the inner socket forming device to drive the inner socket forming device to rotate relative to the outer socket forming device.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The socket-type flexible interface steel pipe spigot forming production line provided by this utility model, in the spigot forming equipment, drives each spigot forming module to move synchronously outward along the radial direction of the spigot annular support through the spigot forming drive mechanism, thus easily completing the rapid forming of the steel pipe spigot; in the socket forming equipment, drives each of the outer forming modules to move synchronously inward along the radial direction of the outer annular support through the outer forming drive mechanism, and drives each of the inner forming modules to move synchronously outward along the radial direction of the inner annular support through the inner forming drive mechanism, thus completing the rapid forming of the steel pipe socket; it has a high degree of mechanization and automation, is simple to operate, has high forming efficiency, and the inner and outer forming modules can be customized according to actual needs to meet the rapid forming of complex socket interfaces with different structures.

[0019] 2. The socket forming production line for flexible joint steel pipes provided by this utility model can, after the socket is formed in one stage, drive the inner forming device of the socket to rotate relative to the outer forming device of the socket through a rotating device, change the relative position of the inner forming module and the outer forming module, and then complete the socket forming in two stages, thereby effectively eliminating the grooves and bosses generated in the first stage forming and achieving better forming effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the socket-type flexible interface steel pipe socket forming production line according to an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the spigot forming equipment in the spigot forming production line of the spigot-and-socket flexible interface steel pipe according to an embodiment of the present utility model.

[0023] Figure 3 This is a partial exploded view of the spigot forming equipment in the spigot forming production line of the spigot-and-socket flexible interface steel pipe according to an embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the socket forming equipment in the socket forming production line of the socket-type flexible interface steel pipe according to an embodiment of the present utility model.

[0025] Figure 5 This is a partial structural diagram of the socket forming equipment in the socket forming production line for flexible joint steel pipes according to an embodiment of this utility model. Figure 1 .

[0026] Figure 6 This is a partial structural diagram of the socket forming equipment in the socket forming production line for flexible joint steel pipes according to an embodiment of this utility model. Figure 2 .

[0027] Figure 7 This is an exploded view of the socket forming device of the socket forming equipment in the socket forming production line of the socket-type flexible interface steel pipe according to an embodiment of this utility model.

[0028] Figure 8 This is a schematic diagram of the outer socket forming device of the socket forming equipment in the socket forming production line of the socket-type flexible interface steel pipe according to an embodiment of this utility model.

[0029] Figure 9 This is an exploded view of the outer socket forming device of the socket forming equipment in the socket forming production line of the socket-type flexible interface steel pipe according to an embodiment of this utility model.

[0030] The corresponding numbers for the attached figures are as follows:

[0031] 100. Conveying track; 200. Transfer equipment; 300. Socket forming equipment; 301. First socket groove; 302. First socket slider; 303. Second socket groove; 304. Second socket slider; 31. Socket annular bracket; 311. Annular limiting plate; 312. Limiting cone surface; 32. Socket forming module; 321. Inner cone surface of the socket; 33. Socket forming cone; 331. Outer cone surface of the socket; 34. Socket forming drive assembly; 400. Socket forming equipment; 401. Outer first groove; 402. Outer first slider; 403. Outer second groove; 404. Outer second slider; 405. Inner first groove; 406. Inner first slider; 407. Inner second groove; 408. Inner second slider; 41. Outer socket forming device; 411, outer annular support; 412, outer forming module; 4121, outer conical surface of the module; 413, outer forming drive seat; 4131, inner conical surface of the drive seat; 414, outer forming drive assembly; 415, outer drive guide assembly; 42, inner socket forming device; 421, inner annular support; 422, inner forming module; 4221, inner conical surface of the module; 423, inner forming cone; 4231, outer conical surface of the cone; 424, inner forming drive assembly; 43, transfer device; 431, transfer guide rail; 432, transfer slide; 433, transfer drive assembly; 44, rotating device; 45, socket forming frame; 51, first conveying roller group; 52, second conveying roller group; 53, repair rotating roller group. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see the appendix Figure 1 To be continued Figure 9 This embodiment provides a socket forming production line for flexible joint steel pipes, including a conveying track 100, a transfer device 200 disposed on the conveying track 100, a socket forming device 300 disposed on one side of the conveying track 100, and a socket forming device 400 disposed on the other side of the conveying track 100. The socket forming device 300 and the socket forming device 400 are arranged at intervals along the extension direction of the conveying track 100.

[0034] In this embodiment, a spigot forming station and a socket forming station are arranged sequentially from front to back along the extension direction of the conveying track 100. The spigot forming device 300 is correspondingly located on one side of the spigot forming station. The axial direction of the spigot annular support 31 in the spigot forming device 300 is perpendicular to the extension direction of the conveying track 100. A first conveying roller group 51 is provided on the spigot forming station. When the transfer device 200 moves the steel pipe to the spigot forming station, the first conveying roller group 51 moves the steel pipe along the axial direction of the spigot annular support 31 to the steel pipe. The spigot end of the pipe is connected to the spigot forming equipment 300; similarly, the socket forming equipment 400 is correspondingly located on one side of the socket forming station. The axial direction of the outer annular support 411 in the socket forming equipment 400 is perpendicular to the extension direction of the conveying track 100. The socket forming station is provided with a second conveying roller group 52. When the transfer equipment 200 moves the steel pipe to the socket forming station, the second conveying roller group 52 moves the steel pipe along the axial direction of the outer annular support 411 until the spigot end of the steel pipe is connected to the socket forming equipment 400.

[0035] Preferably, a repair station can be set up behind the socket forming station. The repair station is equipped with a repair rotating roller group 53, which drives the steel pipe to rotate, so as to facilitate the repair or inspection of the steel pipe. Preferably, several temporary storage stations can be set up in front of the spigot forming station, between the spigot forming station and the socket forming station, and behind the socket forming station. The temporary storage stations are equipped with steel pipe temporary storage supports to provide support for the steel pipe.

[0036] Specifically, the transfer device 200 includes a transfer bracket, a traveling mechanism located below the transfer bracket and cooperating with the conveying track 100, and a lifting module located above the transfer bracket. The traveling mechanism can be a pulley that cooperates with the conveying track 100. Preferably, the conveying track 100 has two transfer devices 200, one of which is used in conjunction with the spigot forming device 300, and the other is used in conjunction with the socket forming device 400, thereby further improving production efficiency.

[0037] The spigot forming equipment 300 includes a spigot annular support 31, a spigot forming module 32, and a spigot forming drive mechanism. The spigot forming module 32 is coaxial with the spigot annular support 31 and includes several spigot forming modules arranged in a circumferential array along the spigot annular support 31. The spigot forming drive mechanism is connected to the spigot forming module 32 to drive each spigot forming module to move synchronously inward or outward along the radial direction of the spigot annular support 31. By driving each spigot forming module to move synchronously outward along the radial direction of the spigot annular support 31, the rapid forming of steel pipe spigots can be easily completed.

[0038] Furthermore, the socket forming drive mechanism includes a socket forming cone 33 and a socket forming drive assembly 34. The socket forming cone 33 is disposed inside the socket forming module 32 and coaxially connected to the socket forming module 32. The outer side of the socket forming cone 33 is provided with an outer conical surface 331, and the inner side of the socket forming module 32 is provided with an inner conical surface 321 that mates with the outer conical surface 331. The socket forming drive assembly 34 connects the socket forming cone 33 and the socket annular support 31 to drive the socket forming cone 33 to move axially relative to the socket annular support 31 and drive each of the socket forming modules to move synchronously radially along the socket annular support 31. Since the socket forming module 32 is connected to the socket forming cone 33, when each socket forming module in the socket forming module 32 moves, each socket forming module is simultaneously subjected to the pushing force of the socket forming cone 33, thus easily achieving synchronous movement of each socket forming module. When the spigot forming drive assembly 34 drives the spigot forming cone 33 to move axially closer to the spigot annular support 31, the outer cone surface 331 and the inner cone surface 321 of the spigot interact, causing each of the spigot forming modules to move radially outward along the spigot annular support 31. This results in the spigot forming module 32 expanding as a whole, so as to apply inner pressure to the steel pipe to promote its forming. When the spigot forming drive assembly 34 drives the spigot forming cone 33 to move axially away from the spigot annular support 31, the outer cone surface 331 and the inner cone surface 321 of the spigot interact, causing each of the spigot forming modules to move radially inward along the spigot annular support 31. This results in the spigot forming module 32 contracting as a whole, so as to allow the spigot-formed steel pipe to detach from the spigot forming module 32.

[0039] The socket forming drive assembly 34 includes a socket driving hydraulic cylinder connected to the socket forming cone 33. The fixed end of the socket driving hydraulic cylinder is fixedly connected to the socket annular bracket 31, and the movable end of the socket driving hydraulic cylinder is connected to the socket forming cone 33.

[0040] Furthermore, a connector cone surface mating structure is provided between the connector forming cone 33 and the connector forming module 32. The connector cone surface mating structure includes a connector second sliding groove 303 extending along the extension direction of the connector outer cone surface 331 and a connector second sliding block 304 mating with the connector second sliding groove 303. The connector second sliding groove 303 is provided on either the connector forming cone 33 or the connector forming module 32, and the connector second sliding block 304 is provided on the other one of the connector forming cone 33 and the connector forming module 32. On the one hand, the interlocking forming cone 33 and the interlocking forming module 32 are connected by the cooperation of the second sliding groove 303 and the second sliding block 304, preventing the interlocking forming module 32 from detaching from the interlocking forming cone 33. On the other hand, the interlocking second sliding groove 303 and the second sliding block 304 provide guidance and limiting functions for the relative movement of the interlocking forming cone 33 and the interlocking forming module 32, making the relative movement of the interlocking forming cone 33 and the interlocking forming module 32 more stable, smooth and precise.

[0041] Furthermore, a socket radial engagement structure is provided between the socket annular bracket 31 and the socket forming module 32. The socket radial engagement structure includes a socket first sliding groove 301 extending radially along the socket annular bracket 31 and a socket first sliding block 302 engaging with the socket first sliding groove 301. The socket first sliding groove 301 is provided on either the socket annular bracket 31 or the socket forming module 32, and the socket first sliding block 302 is provided on the other of the socket annular bracket 31 and the socket forming module 32. On the one hand, the first groove 301 and the first slider 302 of the socket connect the annular support 31 and the forming module 32, preventing the forming module 32 from detaching from the annular support 31. On the other hand, the first groove 301 and the first slider 302 of the socket provide guidance and limiting for the relative movement of the forming module 32 and the annular support 31, making the relative movement of the forming module 32 and the annular support 31 more stable, smooth and precise.

[0042] Furthermore, the annular support 31 of the socket is provided with an annular limiting plate 311, and the inner side of the annular limiting plate 311 is provided with a limiting cone surface 312. The diameter of the limiting cone surface 312 gradually increases along the axial direction from the end away from the socket forming module 32 to the end close to the socket forming module 32. When the socket forming drive assembly 34 drives the socket forming cone 33 to move axially and drives each of the socket forming modules to move radially outward along the annular support 31 of the socket, thereby causing the socket forming module 32 to expand as a whole, the end of the steel pipe socket forms an inwardly tapered structure between the socket forming module 32 and the limiting cone surface 312. Moreover, since the diameter of the limiting cone surface 312 gradually increases along the axial direction from the end away from the socket forming module 32 to the end close to the socket forming module 32, it is convenient for the steel pipe to detach from the annular limiting plate 311 along the axial direction of the annular support 31 of the socket.

[0043] The socket forming equipment 400 includes an outer socket forming device 41 and an inner socket forming device 42. The outer socket forming device 41 includes an outer annular support 411, an outer forming module 412, and an outer forming drive mechanism. The outer forming module 412 is coaxial with the outer annular support 411 and includes a plurality of outer forming modules arranged in a circumferential array along the outer annular support 411. The outer forming drive mechanism is connected to the outer forming module 412 to drive each of the outer forming modules to move synchronously inward or outward along the radial direction of the outer annular support 411. The inner socket forming device 42 includes an inner annular support. 421, an inner molding module 422, and an inner molding drive mechanism, wherein the inner molding module 422 is disposed inside the outer molding module 412 to form a socket molding cavity between the inner molding module 422 and the outer molding module 412, the inner molding module 422 is coaxial with the outer molding module 412 and the inner annular support 421, the inner molding module 422 includes a plurality of inner molding modules arranged in a circumferential array along the inner annular support 421, and the inner molding drive mechanism is connected to the inner molding module 422 to drive each inner molding module to move synchronously inward or outward along the radial direction of the inner annular support 421. The outer forming drive mechanism drives each of the outer forming modules to move synchronously inward along the radial direction of the outer annular support 411, and the inner forming drive mechanism drives each of the inner forming modules to move synchronously outward along the radial direction of the inner annular support 421, thus completing the rapid forming of the steel pipe socket. The process is highly mechanized and automated, simple to operate, and has high forming efficiency. Moreover, the inner forming module 422 and the outer forming module 412 can be customized according to actual needs to meet the rapid forming of complex socket interfaces with different structures.

[0044] The socket forming equipment 400 further includes a rotating device 44 connected to the inner socket forming device 42 to drive the inner socket forming device 42 to rotate relative to the outer socket forming device 41. In this embodiment, the socket forming equipment 400 also includes a socket forming frame 45, on which the inner socket forming device 42 is mounted. The rotating device 44 includes a rotary driving hydraulic cylinder, with its fixed end connected to the socket forming frame 45 and its telescopic end connected to the inner socket forming device 42. The driving direction of the rotating device 44 is perpendicular to the axial direction of the inner annular support 421, thereby driving the inner socket forming device 42 to rotate relative to the outer socket forming device 41. During the process of the inner socket forming device 42 and the outer socket forming device 41 cooperating to complete the steel pipe socket forming, the inner forming module 422 of the inner socket forming device 42 expands as a whole, inevitably resulting in some gaps between each inner forming module. After the inner forming device 42 and the outer forming device 41 cooperate to complete one socket forming operation on the steel pipe, the inner forming device 42 can be driven to rotate relative to the outer forming device 41 by the rotating device 44. This causes the inner forming module 422 of the inner forming device 422 to rotate accordingly, thus changing the relative position of the inner forming module 422 and the outer forming module 412. The inner forming device 42 and the outer forming device 41 then cooperate again to complete one socket forming operation on the steel pipe. This effectively eliminates bosses or grooves that may occur due to gaps between the inner forming modules during the first forming, resulting in better forming effects. Preferably, the rotating device 44 can drive the inner forming device 42 to rotate relative to the outer forming device 41 by 0° to 30°.

[0045] Preferably, in this embodiment, the outer molding drive mechanism includes an outer molding drive seat 413 and an outer molding drive assembly 414. The outer molding drive seat 413 is located on the outside of the outer molding module 412 and coaxially connected to it. The inner side of the outer molding drive seat 413 is provided with an inner cone surface 4131, and the outer side of the outer molding module 412 is provided with an outer cone surface 4121 that mates with the inner cone surface 4131. The outer molding drive assembly 414 connects the outer molding drive seat 413 and the outer annular support 411 to drive the outer molding drive seat 413 to move axially relative to the outer annular support 411 and to drive each of the outer molding modules to move synchronously radially along the outer annular support 411. The outer molding drive seat 413 is annular. Since the outer molding module 412 is connected to the outer molding drive seat 413, each outer molding module in the outer molding module 412 is simultaneously pushed by the outer molding drive seat 413 when it moves, thus easily achieving synchronous movement of each outer molding module. When the outer forming drive assembly 414 drives the outer forming drive seat 413 to move axially closer to the outer annular support 411, the inner conical surface 4131 of the drive seat interacts with the outer conical surface 4121 of the module, thereby causing each of the outer forming modules to move radially inward along the outer annular support 411, resulting in an overall contraction tendency of the outer forming module 412, so as to apply external pressure to the steel pipe in the interface forming cavity to promote the forming of the steel pipe; when the outer forming drive assembly 414 drives the outer forming drive seat 413 to move axially away from the outer annular support 411, the inner conical surface 4131 of the drive seat interacts with the outer conical surface 4121 of the module, thereby causing each of the outer forming modules to move radially outward along the outer annular support 411, resulting in an overall expansion tendency of the outer forming module 412, so as to facilitate the separation of the formed steel pipe from the outer forming module 412.

[0046] The outer molding drive assembly 414 includes an outer drive hydraulic cylinder, and several outer molding drive assemblies 414 are arranged in a circumferential array along the outer molding drive base 413. This provides good driving effect and facilitates the synchronous movement of each outer molding module in the outer molding module 412.

[0047] Furthermore, the outer molding drive mechanism includes an outer drive guide assembly 415, which includes a sleeve and a guide post fitted inside the sleeve. The sleeve is fixedly connected to either the outer molding drive seat 413 or the outer annular support 411, and the guide post is fixedly connected to the other of the outer molding drive seat 413 and the outer annular support 411. When the outer molding drive assembly 414 drives the outer molding drive seat 413 to move axially relative to the outer annular support 411, the guide post moves relative to the sleeve, thereby providing guidance for the axial movement of the outer molding drive seat 413 relative to the outer annular support 411. This makes the axial movement of the outer molding drive seat 413 relative to the outer annular support 411 smoother and more stable, which is beneficial for driving the synchronous movement of each outer molding module in the outer molding module 412.

[0048] Preferably, a plurality of the outer drive guide components 415 are arranged in a circumferential array along the outer forming drive seat 413. This provides good guiding effect and facilitates smoother and more stable axial movement of the outer forming drive seat 413 relative to the outer annular support 411.

[0049] Furthermore, an outer conical surface mating structure is provided between the outer molding drive seat 413 and the outer molding module 412. The outer conical surface mating structure includes an outer second slide groove 403 extending along the extension direction of the outer conical surface 4121 of the module and an outer second slider 404 mating with the outer second slide groove 403. The outer second slide groove 403 is provided on either the outer molding drive seat 413 or the outer molding module 412, and the outer second slider 404 is provided on the other one of the outer molding drive seat 413 and the outer molding module 412. On the one hand, the outer molding drive seat 413 and the outer molding module 412 are connected by the cooperation of the outer second slide groove 403 and the outer second slider 404, preventing the outer molding module 412 from detaching from the outer molding drive seat 413. On the other hand, the cooperation of the outer second slide groove 403 and the outer second slider 404 provides guidance and limiting for the relative movement of the outer molding drive seat 413 and the outer molding module 412, making the relative movement of the outer molding drive seat 413 and the outer molding module 412 more stable, smooth and precise.

[0050] Furthermore, an outer radial engagement structure is provided between the outer annular support 411 and the outer molding module 412. The outer radial engagement structure includes an outer first slide groove 401 extending radially along the outer annular support 411 and an outer first slider 402 engaging with the outer first slide groove 401. The outer first slide groove 401 is provided on either the outer annular support 411 or the outer molding module 412, and the outer first slider 402 is provided on the other of the outer annular support 411 and the outer molding module 412. On the one hand, the outer ring bracket 411 and the outer molding module 412 are connected by the cooperation of the outer first slide groove 401 and the outer first slider 402, so as to prevent the outer molding module 412 from detaching from the outer ring bracket 411. On the other hand, the outer first slide groove 401 and the outer first slider 402 provide guidance and limiting function for the relative movement of the outer molding module 412 and the outer ring bracket 411, so that the relative movement of the outer molding module 412 and the outer ring bracket 411 is more stable, smooth and precise.

[0051] Preferably, the outer first groove 401 and the outer second groove 403 are inverted "T" shape, and the width of the groove opening is smaller than the width of the groove bottom.

[0052] Preferably, in this embodiment, the inner forming drive mechanism includes an inner forming cone 423 and an inner forming drive assembly 424. The inner forming cone 423 is disposed on the inner side of the inner forming module 422 and coaxially connected to the inner forming module 422. The outer side of the inner forming cone 423 is provided with an outer cone surface 4231. The inner side of the inner forming module 422 is provided with an inner cone surface 4221 that cooperates with the outer cone surface 4231. The inner forming drive assembly 424 connects the inner forming cone 423 and the inner annular support 421 to drive the inner forming cone 423 to move axially relative to the inner annular support 421 and drive each inner forming module to move synchronously radially along the inner annular support 421. Since the inner molding module 422 is connected to the inner molding cone 423, when each inner molding module in the inner molding module 422 moves, each inner molding module is simultaneously subjected to the pushing force of the inner molding cone 423, thus easily achieving synchronous movement of each inner molding module. When the inner forming drive assembly 424 drives the inner forming cone 423 to move axially closer to the inner annular support 421, the outer conical surface 4231 of the cone interacts with the inner conical surface 4221 of the module, causing each of the inner forming modules to move radially outward along the inner annular support 421. This results in the inner forming module 422 expanding as a whole, applying inner pressure to the steel pipe in the interface forming cavity to promote steel pipe forming. When the inner forming drive assembly 424 drives the inner forming cone 423 to move axially away from the inner annular support 421, the outer conical surface 4231 of the cone interacts with the inner conical surface 4221 of the module. This results in each of the inner forming modules moving radially inward along the inner annular support 421. This results in the inner forming module 422 contracting as a whole, allowing the formed steel pipe to detach from the inner forming module 422.

[0053] The inner forming drive assembly 424 includes an inner driving hydraulic cylinder connected to the inner forming cone 423. The fixed end of the inner driving hydraulic cylinder is fixedly connected to the inner annular bracket 421, and the movable end of the inner driving hydraulic cylinder is connected to the inner forming cone 423.

[0054] Furthermore, an inner conical surface mating structure is provided between the inner forming cone 423 and the inner forming module 422. The inner conical surface mating structure includes an inner second sliding groove 407 extending along the extending direction of the outer conical surface 4231 of the cone and an inner second slider 408 mating with the inner second sliding groove 407. The inner second sliding groove 407 is provided on either the inner forming cone 423 or the inner forming module 422, and the inner second slider 408 is provided on the other one of the inner forming cone 423 and the inner forming module 422. On the one hand, the inner forming cone 423 and the inner forming module 422 are connected by the cooperation of the inner second slide groove 407 and the inner second slider 408, preventing the inner forming module 422 from detaching from the inner forming cone 423. On the other hand, the cooperation of the inner second slide groove 407 and the inner second slider 408 provides guidance and limiting for the relative movement of the inner forming cone 423 and the inner forming module 422, making the relative movement of the inner forming cone 423 and the inner forming module 422 more stable, smooth and precise.

[0055] Furthermore, an inner radial engagement structure is provided between the inner annular support 421 and the inner molding module 422. The inner radial engagement structure includes an inner first sliding groove 405 extending radially along the inner annular support 421 and an inner first slider 406 engaging with the inner first sliding groove 405. The inner first sliding groove 405 is provided on either the inner annular support 421 or the inner molding module 422, and the inner first slider 406 is provided on the other of the inner annular support 421 and the inner molding module 422. On the one hand, the inner ring bracket 421 and the inner molding module 422 are connected by the cooperation of the inner first slide groove 405 and the inner first slider 406, preventing the inner molding module 422 from detaching from the inner ring bracket 421. On the other hand, the cooperation of the inner first slide groove 405 and the inner first slider 406 provides guidance and limiting for the relative movement of the inner molding module 422 and the inner ring bracket 421, making the relative movement of the inner molding module 422 and the inner ring bracket 421 more stable, smooth and precise.

[0056] Preferably, the inner first groove 405 and the inner second groove 407 are inverted "T" shape, and the width of the groove opening is smaller than the width of the groove bottom.

[0057] Furthermore, the socket forming equipment 400 also includes a transfer device 43, which includes a transfer guide rail 431, a transfer slide 432, and a transfer drive assembly 433. The length direction of the transfer guide rail 431 is parallel to the axial direction of the outer annular support 411. The transfer slide 432 is movably mounted on the transfer guide rail 431 and connected to the outer socket forming device 41. The transfer drive assembly 433 is connected to the transfer slide 432 to drive the transfer slide 432 to move the outer socket forming device 41 along the transfer guide rail 431. By driving the outer socket forming device 41 as a whole along the axial direction of the outer annular support 411 through the transfer device 43, it is convenient to perform individual repairs or maintenance on the outer socket forming device 41 or the inner socket forming device 42, and also convenient to replace the outer forming module 412 or the inner forming module 422 with the outer forming module or the inner forming module with the shape required for production.

[0058] Specifically, the transfer drive assembly 43 includes a transfer drive motor, a transfer lead screw, and a transfer nut. The transfer lead screw is connected to the output end of the transfer drive motor, and the transfer nut is connected to the transfer slide and threadedly engaged with the transfer lead screw. The length direction of the transfer lead screw is parallel to the length direction of the transfer guide rail. The transfer drive motor drives the transfer lead screw to rotate, thereby driving the transfer slide connected to the transfer nut to move along the transfer lead screw, which in turn drives the outer socket forming device 41 to move axially along the outer annular support 411. The structure is simple and easy to implement.

[0059] This embodiment also provides a method for forming the socket of a flexible joint steel pipe, which is applied to the socket forming production line of the flexible joint steel pipe described above, and includes the following steps:

[0060] S1. The transfer equipment 200 drives the steel pipe to move along the conveying track 100 to the spigot forming equipment 300;

[0061] S2, Socket Forming: The socket forming drive mechanism drives each of the socket forming modules to move synchronously to the designated position along the radial outward of the socket annular bracket 31 so that the steel pipe completes the socket forming.

[0062] S3, Demolding of the socket: The socket forming drive mechanism drives each of the socket forming modules to move synchronously to the initial position along the radial inward side of the socket annular bracket 31, so that the socket forming module 32 is detached from the steel pipe;

[0063] S4. The transfer equipment 200 drives the steel pipe to move along the conveying track 100 to the socket forming equipment 400;

[0064] S5. One-time socket forming: The outer forming drive mechanism in the outer socket forming device 41 drives each outer forming module to move synchronously to the designated position along the radial direction of the outer annular support 411; the inner forming drive mechanism in the inner socket forming device 42 drives each inner forming module to move synchronously to the designated position along the radial direction of the inner annular support 421; so that the steel pipe completes one-time socket forming in the socket forming cavity between the outer forming module 412 and the inner forming module 422;

[0065] S6. Secondary forming of the socket: The inner forming drive mechanism in the inner forming device 42 drives each inner forming module to move synchronously to the initial position along the radial direction of the inner annular support 421, so that the inner forming module 422 is separated from the steel pipe; the rotating device 44 drives the inner forming device 42 to rotate relative to the outer forming device 41 of the socket by a specified angle; the inner forming drive mechanism in the inner forming device 42 drives each inner forming module to move synchronously to the specified position along the radial direction of the inner annular support 421, so that the steel pipe completes the secondary forming of the socket in the socket forming cavity between the outer forming module 412 and the inner forming module 422;

[0066] S7. Socket demolding: The inner forming drive mechanism in the inner forming device 42 drives each inner forming module to move synchronously to the initial position along the radial direction of the inner annular support 421, so that the inner forming module 422 is detached from the steel pipe; the outer forming drive mechanism in the outer forming device 41 drives each outer forming module to move synchronously to the initial position along the radial direction of the outer annular support 411, so that the outer forming module 412 is detached from the steel pipe.

[0067] The socket-type flexible interface steel pipe spigot forming production line provided in this embodiment, in the spigot forming equipment 300, drives each spigot forming module to move synchronously outward along the radial direction of the spigot annular support 31 through the spigot forming drive mechanism, thus easily completing the rapid forming of the steel pipe spigot; in the socket forming equipment 400, drives each of the outer forming modules to move synchronously inward along the radial direction of the outer annular support 411 through the outer forming drive mechanism, and drives each of the inner forming modules to move synchronously outward along the radial direction of the inner annular support 421 through the inner forming drive mechanism, thus completing the rapid forming of the steel pipe socket; the line has a high degree of mechanization and automation, is simple to operate, and has high forming efficiency. Moreover, the inner forming module 422 and the outer forming module 412 can be customized according to the corresponding contours according to actual needs, which can meet the rapid forming of complex socket interfaces with different structures. In addition, after the first molding of the socket is completed, the inner molding device 42 of the socket can be rotated relative to the outer molding device 41 of the socket by the rotating device 44, thereby changing the relative position of the inner molding module 422 and the outer molding module 412, and then the second molding of the socket can be completed, thereby effectively eliminating the grooves and bosses generated in the first molding and achieving a better molding effect.

[0068] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0069] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A socket-type flexible joint steel pipe socket forming production line, characterized in that, It includes a conveying track (100), a transfer device (200) disposed on the conveying track (100), a spigot forming device (300) disposed on one side of the conveying track (100), and a socket forming device (400) disposed on the other side of the conveying track (100). The spigot forming device (300) and the socket forming device (400) are arranged at intervals along the extension direction of the conveying track (100). The socket forming device (300) includes a socket ring support (31), a socket forming module (32), and a socket forming drive mechanism. The socket forming module (32) is coaxial with the socket ring support (31). The socket forming module (32) includes a plurality of socket forming modules arranged in a circumferential array along the socket ring support (31). The socket forming drive mechanism is connected to the socket forming module (32) to drive each of the socket forming modules to move synchronously inward or outward along the radial direction of the socket ring support (31). The socket forming equipment (400) includes a socket outer forming device (41) and a socket inner forming device (42). The socket outer forming device (41) includes an outer annular support (411), an outer forming module (412), and an outer forming drive mechanism. The outer forming module (412) is coaxial with the outer annular support (411). The outer forming module (412) includes a plurality of outer forming modules arranged in a circumferential array along the outer annular support (411). The outer forming drive mechanism is connected to the outer forming module (412) to drive each of the outer forming modules to move synchronously inward or outward along the radial direction of the outer annular support (411). The socket inner forming device (42) includes an inner annular support (411) 421), an inner molding module (422), and an inner molding drive mechanism. The inner molding module (422) is located inside the outer molding module (412) to form a socket molding cavity between the inner molding module (422) and the outer molding module (412). The inner molding module (422) is coaxial with the outer molding module (412) and the inner annular support (421). The inner molding module (422) includes a plurality of inner molding modules arranged in a circumferential array along the inner annular support (421). The inner molding drive mechanism is connected to the inner molding module (422) to drive each inner molding module to move synchronously inward or outward along the radial direction of the inner annular support (421).

2. The socket-type flexible joint steel pipe socket forming production line according to claim 1, characterized in that, The outer molding drive mechanism includes an outer molding drive seat (413) and an outer molding drive assembly (414). The outer molding drive seat (413) is located on the outside of the outer molding module (412) and is coaxially connected to the outer molding module (412). The inner side of the outer molding drive seat (413) is provided with an inner cone surface (4131). The outer side of the outer molding module (412) is provided with an outer cone surface (4121) that cooperates with the inner cone surface (4131) of the drive seat. The outer molding drive assembly (414) connects the outer molding drive seat (413) and the outer annular support (411) to drive the outer molding drive seat (413) to move axially relative to the outer annular support (411) and drive each of the outer molding modules to move synchronously radially along the outer annular support (411).

3. The socket-type flexible joint steel pipe socket forming production line according to claim 2, characterized in that, An outer conical surface mating structure is provided between the outer molding drive seat (413) and the outer molding module (412). The outer conical surface mating structure includes an outer second slide groove (403) extending along the extension direction of the outer conical surface (4121) of the module and an outer second slider (404) mating with the outer second slide groove (403). The outer second slide groove (403) is provided on either the outer molding drive seat (413) or the outer molding module (412), and the outer second slider (404) is provided on the other one of the outer molding drive seat (413) and the outer molding module (412). An outer radial fitting structure is provided between the outer annular support (411) and the outer molding module (412). The outer radial fitting structure includes an outer first slide groove (401) extending radially along the outer annular support (411) and an outer first slider (402) that fits with the outer first slide groove (401). The outer first slide groove (401) is provided on either the outer annular support (411) or the outer molding module (412), and the outer first slider (402) is provided on the other of the outer annular support (411) and the outer molding module (412).

4. The socket-type flexible joint steel pipe socket forming production line according to claim 1, characterized in that, The inner forming drive mechanism includes an inner forming cone (423) and an inner forming drive assembly (424). The inner forming cone (423) is located inside the inner forming module (422) and is coaxially connected to the inner forming module (422). The outer side of the inner forming cone (423) is provided with an outer cone surface (4231). The inner side of the inner forming module (422) is provided with an inner cone surface (4221) that cooperates with the outer cone surface (4231). The inner forming drive assembly (424) connects the inner forming cone (423) and the inner annular support (421) to drive the inner forming cone (423) to move axially relative to the inner annular support (421) and drive each inner forming module to move synchronously radially along the inner annular support (421).

5. The socket-type flexible joint steel pipe socket forming production line according to claim 4, characterized in that, An inner conical surface mating structure is provided between the inner forming cone (423) and the inner forming module (422). The inner conical surface mating structure includes an inner second sliding groove (407) extending along the extension direction of the outer conical surface (4231) of the cone and an inner second slider (408) mating with the inner second sliding groove (407). The inner second sliding groove (407) is provided on either the inner forming cone (423) or the inner forming module (422), and the inner second slider (408) is provided on the other one of the inner forming cone (423) and the inner forming module (422). An inner radial fitting structure is provided between the inner annular support (421) and the inner molding module (422). The inner radial fitting structure includes an inner first slide groove (405) extending radially along the inner annular support (421) and an inner first slider (406) that fits with the inner first slide groove (405). The inner first slide groove (405) is provided on either the inner annular support (421) or the inner molding module (422), and the inner first slider (406) is provided on the other of the inner annular support (421) and the inner molding module (422).

6. The socket-type flexible joint steel pipe socket forming production line according to claim 1, characterized in that, The socket forming equipment (400) further includes a transfer device (43), which includes a transfer guide rail (431), a transfer slide (432), and a transfer drive assembly (433). The length direction of the transfer guide rail (431) is parallel to the axial direction of the outer annular support (411). The transfer slide (432) is movably mounted on the transfer guide rail (431) and connected to the outer socket forming device (41). The transfer drive assembly (433) is connected to the transfer slide (432) to drive the transfer slide (432) to move the outer socket forming device (41) along the transfer guide rail (431).

7. The socket-type flexible joint steel pipe socket forming production line according to claim 1, characterized in that, The socket forming drive mechanism includes a socket forming cone (33) and a socket forming drive assembly (34). The socket forming cone (33) is located inside the socket forming module (32) and is coaxially connected to the socket forming module (32). The outer side of the socket forming cone (33) is provided with an outer conical surface (331). The inner side of the socket forming module (32) is provided with an inner conical surface (321) that cooperates with the outer conical surface (331). The socket forming drive assembly (34) connects the socket forming cone (33) and the socket annular support (31) to drive the socket forming cone (33) to move axially relative to the socket annular support (31) and drive each socket forming module to move synchronously radially along the socket annular support (31).

8. The socket-type flexible joint steel pipe socket forming production line according to claim 7, characterized in that, A socket cone surface mating structure is provided between the socket forming cone (33) and the socket forming module (32). The socket cone surface mating structure includes a second socket groove (303) extending along the extension direction of the outer cone surface (331) of the socket and a second socket slider (304) mating with the second socket groove (303). The second socket groove (303) is provided on either the socket forming cone (33) or the socket forming module (32), and the second socket slider (304) is provided on the other one of the socket forming cone (33) and the socket forming module (32). A socket radial fitting structure is provided between the socket annular bracket (31) and the socket forming module (32). The socket radial fitting structure includes a socket first sliding groove (301) extending radially along the socket annular bracket (31) and a socket first slider (302) cooperating with the socket first sliding groove (301). The socket first sliding groove (301) is provided on either the socket annular bracket (31) or the socket forming module (32), and the socket first slider (302) is provided on the other of the socket annular bracket (31) and the socket forming module (32).

9. The socket-type flexible joint steel pipe socket forming production line according to claim 7, characterized in that, The socket annular bracket (31) is provided with an annular limiting plate (311), and the inner side of the annular limiting plate (311) is provided with a limiting cone surface (312). The diameter of the limiting cone surface (312) gradually increases along the axial direction from the end away from the socket forming module (32) to the end close to the socket forming module (32).

10. The socket-type flexible joint steel pipe socket forming production line according to any one of claims 1-9, characterized in that, The socket forming device (400) includes a rotating device (44) connected to the inner socket forming device (42) to drive the inner socket forming device (42) to rotate relative to the outer socket forming device (41).

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