Socket joint multidirectional reducing forming device and steel pipe socket joint forming equipment
The outer forming module is driven to move inward by the outer forming drive mechanism, and in conjunction with the inner diameter expansion machine, the problem of forming complex socket interfaces in the existing technology is solved, and rapid forming and efficient demolding are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGTAN HUAJIN HEAVY EQUIP CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-19
AI Technical Summary
Existing technology makes it difficult to apply force to the steel pipe from the inside out using an expanding machine, resulting in difficulties in forming complex socket joints.
An outer forming drive mechanism is used to drive the outer forming module to move radially along the annular support, applying force from the outside of the steel pipe inward, which, together with the inner diameter expanding machine, forms a complex structure with multiple concave and convex undulations.
It enables rapid prototyping and efficient demolding of complex socket joints, with simple and efficient molding operations.
Smart Images
Figure CN224254047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of steel pipe joint forming equipment, specifically a multi-directional diameter reduction forming device for socket joints and steel pipe socket joint forming equipment. Background Technology
[0002] To facilitate long-distance transportation by connecting steel pipes, socket-type steel pipes were developed. One end of a socket-type steel pipe has a socket, and the other end has a spigot. When forming a transportation pipeline, the spigot of the first pipe is inserted into the socket of the second pipe, achieving a convenient connection. Currently, socket-type steel pipes are typically manufactured by expanding one end of the pipe with an expanding machine to form the socket, while the unexpanded end forms the spigot. The expanding machine can only apply force from the inside out to shape the pipe, making it difficult to create the complex socket joint with multiple undulations. Utility Model Content
[0003] The purpose of this utility model is to provide a multi-directional diameter reduction forming device for socket joints and a steel pipe socket joint forming equipment, which solves the problem that existing socket-type steel pipes only apply force from the inside to the outside of the steel pipe through an expansion machine to promote the forming of the steel pipe, making it difficult to form a relatively complex socket joint.
[0004] To solve the above problems, the present invention provides the following technical solution:
[0005] A socket joint multi-directional diameter reduction 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 along the radial direction of the outer annular support or to move synchronously outward along the radial direction of the outer annular support.
[0006] As described above, in a multi-directional diameter reduction forming device for a socket joint, the outer forming drive mechanism includes an outer forming drive seat and an outer forming drive assembly. The outer forming drive seat is located on the outside of 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.
[0007] As described above, in a socket joint multi-directional diameter reduction forming device, the outer forming drive mechanism includes an outer drive guide assembly, which includes a sleeve and a guide post fitted inside the sleeve. The sleeve is fixedly connected to either the outer forming drive seat or the outer annular bracket, and the guide post is fixedly connected to the other of the outer forming drive seat and the outer annular bracket.
[0008] In the socket interface multi-directional diameter reduction forming device described above, a plurality of the outer drive guide components are arranged in a circumferential array along the outer forming drive seat.
[0009] As described above, in a multi-directional diameter reduction forming device for socket joints, the outer forming drive assembly includes a hydraulic cylinder, and a plurality of the outer forming drive assemblies are arranged in a circumferential array along the outer forming drive seat.
[0010] As described above, a multi-directional diameter reduction forming device for a socket interface is provided with an outer conical surface mating structure 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 one of the outer forming drive seat and the outer forming module.
[0011] As described above, a multi-directional diameter reduction forming device for a socket joint is provided with an outer radial fitting structure between the outer annular support and the outer forming module. The outer radial fitting structure includes an outer first sliding groove extending radially along the outer annular support and an outer first sliding block that fits 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 of the outer annular support and the outer forming module.
[0012] The socket multi-directional diameter reduction forming device described above further includes a transfer mechanism, which 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 annular support. The transfer drive assembly is connected to the transfer slide to drive the transfer slide to move the outer annular support along the transfer guide rail.
[0013] As described above, in a multi-directional diameter reduction forming device for a socket joint, the transfer drive assembly 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.
[0014] A steel pipe socket forming device includes an inner forming device for the socket and a multi-directional diameter reduction forming device for the socket as described above. The inner forming device for the socket includes an inner forming module disposed inside the outer forming module, and an interface forming cavity is formed between the inner forming module and the outer forming module.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] This invention provides a multi-directional diameter reduction forming device for socket joints and a forming equipment for steel pipe socket joints. When applied to the forming of steel pipe socket joints, the outer forming drive mechanism drives each outer forming module to move synchronously inward along the radial direction of the outer annular support, thereby applying a force to the steel pipe from the outside inward. This force corresponds to the force applied to the steel pipe from the inside out by the diameter expander, enabling rapid forming of socket joints with complex structures featuring multiple undulations. After the steel pipe socket joint is formed, the outer forming drive mechanism drives each outer forming module to move synchronously outward along the radial direction of the outer annular support, thereby detaching each outer forming module from the steel pipe and achieving rapid demolding. This invention not only meets the forming requirements of complex socket joints but also offers simple forming operation and high forming efficiency. Attached Figure Description
[0017] 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.
[0018] Figure 1 This is a schematic diagram of the structure of a socket interface multi-directional diameter reduction forming device according to an embodiment of the present utility model.
[0019] Figure 2 This is a partial exploded view of a socket interface multi-directional diameter reduction forming device according to an embodiment of the present utility model.
[0020] Figure 3 This is a schematic diagram of the transfer mechanism of a socket interface multi-directional diameter reduction forming device according to an embodiment of the present utility model.
[0021] Figure 4This is a structural schematic diagram of a steel pipe socket forming device according to an embodiment of the present utility model.
[0022] The corresponding numbers for the attached figures are as follows:
[0023] 1. Socket interface multi-directional diameter reduction forming device; 11. Outer annular support; 12. Outer forming module; 121. Module outer conical surface; 13. Outer forming drive seat; 131. Drive seat inner conical surface; 14. Outer forming drive assembly; 15. Outer drive guide assembly; 151. Sleeve; 152. Guide post; 16. Transfer mechanism; 161. Transfer guide rail; 162. Transfer slide; 163. Transfer drive assembly; 1631. Transfer drive motor; 1632. Transfer lead screw; 1633. Transfer nut; 171. Outer first slide groove; 172. Outer first slider; 181. Outer second slide groove; 182. Outer second slider; 2. Socket interface inner forming device; 22. Inner forming module. Detailed Implementation
[0024] 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.
[0025] Please see the appendix Figure 1 To be continued Figure 3This embodiment provides a multi-directional diameter reduction forming device for socket interfaces, including an outer annular support 11, an outer forming module 12, and an outer forming drive mechanism. The outer forming module 12 is coaxial with the outer annular support 11. The outer forming module 12 includes a plurality of outer forming modules arranged in a circumferential array along the outer annular support 11. The outer forming drive mechanism is connected to the outer forming module 12 to drive each of the outer forming modules to move synchronously inward along the radial direction of the outer annular support 11 or synchronously outward along the radial direction of the outer annular support 11. This embodiment of a multi-directional diameter reduction forming device for socket joints, when applied to the forming of steel pipe socket joints, can drive each outer forming module to move synchronously inward along the radial direction of the outer annular support 11 through the outer forming drive mechanism, thereby applying force to the steel pipe from the outside to the inside. This corresponds to the force applied to the steel pipe from the inside to the outside by the expanding machine, enabling rapid forming of socket joints with complex structures having multiple concave and convex undulations. After the steel pipe socket joint is formed, the outer forming drive mechanism can drive each outer forming module to move synchronously outward along the radial direction of the outer annular support 11, thereby detaching each outer forming module from the steel pipe and achieving rapid demolding of the steel pipe. It can not only meet the forming of relatively complex socket joints, but also has simple forming operation and high forming efficiency.
[0026] The outer forming drive mechanism can be implemented in a variety of ways.
[0027] In some embodiments, the outer forming drive mechanism includes a plurality of hydraulic cylinders mounted on the outer annular support 11. The plurality of hydraulic cylinders extend radially along the outer annular support 11 and are connected to the outer forming modules one by one. The fixed end of the hydraulic cylinder is fixedly connected to the outer annular support 11, and the telescopic end of the hydraulic cylinder is connected to the outer forming module 12. Each hydraulic cylinder drives the corresponding outer forming module to move independently. This driving method is costly and requires high precision from the hydraulic cylinders.
[0028] Preferably, the outer molding drive mechanism in this embodiment includes an outer molding drive seat 13 and an outer molding drive assembly 14. The outer molding drive seat 13 is located on the outside of the outer molding module 12 and coaxially connected to it. The inner side of the outer molding drive seat 13 is provided with an inner cone surface 131, and the outer side of the outer molding module 12 is provided with an outer cone surface 121 that mates with the inner cone surface 131. The outer molding drive assembly 14 connects the outer molding drive seat 13 and the outer annular support 11 to drive the outer molding drive seat 13 to move axially relative to the outer annular support 11 and to drive each of the outer molding modules to move synchronously radially along the outer annular support 11. The outer molding drive seat 13 is annular. Since the outer molding module 12 is connected to the outer molding drive seat 13, each of the outer molding modules in the outer molding module 12 is simultaneously subjected to the pushing force of the outer molding drive seat 13 when moving, easily achieving synchronous movement of each outer molding module. When the outer forming drive assembly 14 drives the outer forming drive seat 13 to move axially closer to the outer annular support 11, the inner conical surface 131 of the drive seat interacts with the outer conical surface 121 of the module, thereby causing each of the outer forming modules to move radially inward along the outer annular support 11, resulting in the outer forming module 12 exhibiting an overall contraction tendency, 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 14 drives the outer forming drive seat 13 to move axially away from the outer annular support 11, the inner conical surface 131 of the drive seat interacts with the outer conical surface 121 of the module, thereby causing each of the outer forming modules to move radially outward along the outer annular support 11, resulting in the outer forming module 12 exhibiting an overall expansion tendency, so as to facilitate the forming of the steel pipe from the outer forming module 12.
[0029] The outer molding drive assembly 14 includes a hydraulic cylinder, and several outer molding drive assemblies 14 are arranged in a circumferential array along the outer molding drive base 13. This provides good driving effect and facilitates the synchronous movement of each outer molding module in the outer molding module 12.
[0030] Furthermore, the outer molding drive mechanism includes an outer drive guide assembly 15, which includes a sleeve 151 and a guide post 152 fitted inside the sleeve 151. The sleeve 151 is fixedly connected to either the outer molding drive seat 13 or the outer annular support 11, and the guide post 152 is fixedly connected to the other of the outer molding drive seat 13 and the outer annular support 11. When the outer molding drive assembly 14 drives the outer molding drive seat 13 to move axially relative to the outer annular support 11, the guide post 152 moves relative to the sleeve 151, thereby providing guidance for the axial movement of the outer molding drive seat 13 relative to the outer annular support 11. This makes the axial movement of the outer molding drive seat 13 relative to the outer annular support 11 smoother and more stable, which is beneficial for driving the synchronous movement of each outer molding module in the outer molding module 12.
[0031] Preferably, a plurality of the outer drive guide components 15 are arranged in a circumferential array along the outer forming drive seat 13. This provides good guiding effect and facilitates smoother and more stable axial movement of the outer forming drive seat 13 relative to the outer annular support 11.
[0032] Furthermore, an outer conical surface mating structure is provided between the outer molding drive seat 13 and the outer molding module 12. The outer conical surface mating structure includes an outer second slide groove 181 extending along the extension direction of the outer conical surface 121 of the module and an outer second slider 182 mating with the outer second slide groove 181. The outer second slide groove 181 is provided on either the outer molding drive seat 13 or the outer molding module 12, and the outer second slider 182 is provided on the other one of the outer molding drive seat 13 and the outer molding module 12. On the one hand, the outer molding drive seat 13 and the outer molding module 12 are connected by the cooperation of the outer second slide groove 181 and the outer second slider 182, preventing the outer molding module 12 from detaching from the outer molding drive seat 13. On the other hand, the cooperation of the outer second slide groove 181 and the outer second slider 182 provides guidance and limiting for the relative movement of the outer molding drive seat 13 and the outer molding module 12, making the relative movement of the outer molding drive seat 13 and the outer molding module 12 more stable, smooth and precise.
[0033] Furthermore, an outer radial engagement structure is provided between the outer annular support 11 and the outer molding module 12. This structure includes an outer first groove 171 extending radially along the outer annular support 11 and an outer first slider 172 engaging with the outer first groove 171. The outer first groove 171 is located on either the outer annular support 11 or the outer molding module 12, and the outer first slider 172 is located on the other. On one hand, the engagement of the outer first groove 171 and the outer first slider 172 connects the outer annular support 11 and the outer molding module 12, preventing the outer molding module 12 from detaching from the outer annular support 11. On the other hand, the engagement of the outer first groove 171 and the outer first slider 172 provides guidance and limiting for the relative movement of the outer molding module 12 and the outer annular support 11, making their relative movement smoother, more stable, and more precise.
[0034] Preferably, the outer first groove 171 and the outer second groove 181 are inverted "T" shape, and the width of the groove opening is smaller than the width of the groove bottom.
[0035] Furthermore, it also includes a transfer mechanism 16, which includes a transfer guide rail 161, a transfer slide 162, and a transfer drive assembly 163. The length direction of the transfer guide rail 161 is parallel to the axial direction of the outer annular support 11. The transfer slide 162 is movably mounted on the transfer guide rail 161 and connected to the outer annular support 11. The transfer drive assembly 163 is connected to the transfer slide 162 to drive the transfer slide 162 to move the outer annular support 11 along the transfer guide rail 161. By driving the outer annular support 11 through the transfer mechanism 16, the entire socket interface multi-directional diameter reduction forming device 1 can be moved along the axial direction of the outer annular support 11. This facilitates individual repair or maintenance of the socket interface multi-directional diameter reduction forming device 1 or the socket interface inner forming device 2, and also facilitates the replacement of the outer forming module 12 or the inner forming module 22 with the outer forming module or inner forming module of the required production shape.
[0036] Specifically, the transfer drive assembly 163 includes a transfer drive motor 1631, a transfer lead screw 1632, and a transfer nut 1633. The transfer lead screw 1632 is connected to the output end of the transfer drive motor 1631, and the transfer nut 1633 is connected to the transfer slide 162 and threadedly engaged with the transfer lead screw 1632. The length direction of the transfer lead screw 1632 is parallel to the length direction of the transfer guide rail 161. The transfer drive motor 1631 drives the transfer lead screw 1632 to rotate, thereby driving the transfer slide 162 connected to the transfer nut 1633 to move along the transfer lead screw 1632, and further driving the entire socket interface multi-directional diameter reduction forming device 1 to move axially along the outer annular support 11. The structure is simple and easy to implement.
[0037] Please see the appendix Figure 4 This embodiment also provides a steel pipe socket joint forming device, which includes a socket joint inner forming device 2 and a socket joint multi-directional diameter reduction forming device 1 as described above. The socket joint inner forming device 2 includes an inner forming module 22 disposed inside the outer forming module 12, and an interface forming cavity is formed between the inner forming module 22 and the outer forming module 12. The socket joint inner forming device 2 can be an existing diameter expanding machine. During the forming operation, one end of the steel pipe is first moved into the interface forming cavity between the outer forming module 12 and the inner forming module 22. Then, the outer forming drive mechanism drives each of the outer forming modules to move synchronously to a designated position along the radial direction of the outer annular support 11, while maintaining the overall contracted state of the outer forming module 12. Subsequently, the socket joint inner forming device 2, i.e., the diameter expanding machine, drives and maintains the expansion state of the inner forming module 22, thereby completing the rapid shaping of one end of the steel pipe. The multi-directional diameter reduction forming device 1 and the inner forming device 2 of the socket joint apply forces to the steel pipe from the outside and inside, respectively, enabling rapid forming of complex socket joints with multiple undulations. After the socket joint is formed, the outer forming drive mechanism drives each outer forming module to move synchronously outward along the radial direction of the outer annular support 11, thereby detaching each outer forming module from the steel pipe and achieving rapid demolding. When different shapes of socket joints need to be produced, it is only necessary to replace the outer forming module 12 and the inner forming module 22 with different forming mold surfaces. It can not only meet the forming needs of relatively complex socket joints, but also has simple forming operation and high forming efficiency.
[0038] 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.
[0039] 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 multi-directional diameter reduction forming device for socket joints, characterized in that, It includes an outer annular support (11), an outer molding module (12), and an outer molding drive mechanism. The outer molding module (12) is coaxial with the outer annular support (11). The outer molding module (12) includes a plurality of outer molding modules arranged in a circumferential array along the outer annular support (11). The outer molding drive mechanism is connected to the outer molding module (12) to drive each of the outer molding modules to move synchronously inward along the radial direction of the outer annular support (11) or to move synchronously outward along the radial direction of the outer annular support (11).
2. The socket joint multi-directional diameter reduction forming device according to claim 1, characterized in that, The outer molding drive mechanism includes an outer molding drive seat (13) and an outer molding drive assembly (14). The outer molding drive seat (13) is located on the outside of the outer molding module (12) and is coaxially connected to the outer molding module (12). The inner side of the outer molding drive seat (13) is provided with an inner cone surface (131). The outer side of the outer molding module (12) is provided with an outer cone surface (121) that cooperates with the inner cone surface (131) of the drive seat. The outer molding drive assembly (14) connects the outer molding drive seat (13) and the outer annular support (11) to drive the outer molding drive seat (13) to move axially relative to the outer annular support (11) and drive each of the outer molding modules to move synchronously radially along the outer annular support (11).
3. The socket joint multi-directional diameter reduction forming device according to claim 2, characterized in that, The outer molding drive mechanism includes an outer drive guide assembly (15), which includes a sleeve (151) and a guide post (152) fitted inside the sleeve (151). The sleeve (151) is fixedly connected to either the outer molding drive seat (13) or the outer annular bracket (11), and the guide post (152) is fixedly connected to the other of the outer molding drive seat (13) and the outer annular bracket (11).
4. The socket joint multi-directional diameter reduction forming device according to claim 3, characterized in that, Several of the outer drive guide components (15) are arranged in a circumferential array along the outer molding drive seat (13).
5. The socket joint multi-directional diameter reduction forming device according to claim 2, characterized in that, The outer molding drive assembly (14) includes a hydraulic cylinder, and a plurality of the outer molding drive assemblies (14) are arranged in a circumferential array along the outer molding drive seat (13).
6. The socket joint multi-directional diameter reduction forming device according to claim 2, characterized in that, An outer conical surface mating structure is provided between the outer molding drive seat (13) and the outer molding module (12). The outer conical surface mating structure includes an outer second slide groove (181) extending along the extension direction of the outer conical surface (121) of the module and an outer second slider (182) mating with the outer second slide groove (181). The outer second slide groove (181) is provided on either the outer molding drive seat (13) or the outer molding module (12), and the outer second slider (182) is provided on the other one of the outer molding drive seat (13) and the outer molding module (12).
7. The socket joint multi-directional diameter reduction forming device according to claim 1, characterized in that, An outer radial fitting structure is provided between the outer annular support (11) and the outer molding module (12). The outer radial fitting structure includes an outer first slide groove (171) extending radially along the outer annular support (11) and an outer first slider (172) cooperating with the outer first slide groove (171). The outer first slide groove (171) is provided on either the outer annular support (11) or the outer molding module (12), and the outer first slider (172) is provided on the other one of the outer annular support (11) and the outer molding module (12).
8. A socket joint multi-directional diameter reduction forming device according to any one of claims 1-7, characterized in that, It also includes a transfer mechanism (16), which includes a transfer guide rail (161), a transfer slide (162), and a transfer drive assembly (163). The length direction of the transfer guide rail (161) is parallel to the axial direction of the outer annular support (11). The transfer slide (162) is movably mounted on the transfer guide rail (161) and connected to the outer annular support (11). The transfer drive assembly (163) is connected to the transfer slide (162) to drive the transfer slide (162) to move the outer annular support (11) along the transfer guide rail (161).
9. A socket joint multi-directional diameter reduction forming device according to claim 8, characterized in that, The transfer drive assembly (163) includes a transfer drive motor (1631), a transfer lead screw (1632), and a transfer nut (1633). The transfer lead screw (1632) is connected to the output end of the transfer drive motor (1631), and the transfer nut (1633) is connected to the transfer slide (162) and threadedly engaged with the transfer lead screw (1632).
10. A steel pipe socket joint forming device, characterized in that, The device includes an inner forming device (2) for a socket interface and a multi-directional diameter reduction forming device (1) for a socket interface as described in any one of claims 1-9. The inner forming device (2) for the socket interface includes an inner forming module (22) disposed inside the outer forming module (12). An interface forming cavity is formed between the inner forming module (22) and the outer forming module (12).