Duplex stainless steel bent pipe forming device

Abstract

The utility model belongs to the technical field of bent pipe forming, and particularly relates to a duplex stainless steel bent pipe forming device which comprises a workbench, a rotating disc, a driving mechanism, a pipe bending die, a first air cylinder, a supporting plate, a second air cylinder, a bending die, a third air cylinder, a supporting block and an induction coil. An area to be bent of a pipe is rapidly and evenly heated through the induction coil, then the pipe bending die and the bending die are made to be close to the pipe at the same time after heating is completed, the pipe is fixed between the pipe bending groove and the bending groove, and finally bending forming is completed through rotation of the rotating disc and the supporting plate. The pipe hot bending device is accurate in temperature control and high in bending forming speed, influences caused by natural cooling of the pipe are reduced, it is guaranteed that hot bending of the pipe can be completed within a proper temperature interval, accordingly, the internal organization structure of the material is prevented from changing, and the overall quality and the service life of the bent pipe are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of pipe bending forming technology, specifically relating to a duplex stainless steel pipe bending forming device. Background Technology

[0002] Duplex stainless steel bends are pipe bending components made of duplex stainless steel. Because duplex stainless steel is a type of stainless steel containing austenitic and ferritic two-phase structures, it has a unique microstructure and combines high strength with excellent corrosion resistance. Therefore, it can be widely used in special industrial scenarios that require high strength and corrosion resistance, such as petroleum, chemical, and marine engineering.

[0003] When producing duplex stainless steel bends, the usual process is to bend the steel pipe into various shapes according to specific actual needs, so as to adapt to different applications. This process not only requires maintaining the original high strength and corrosion resistance of the material, but also ensuring the dimensional accuracy and surface quality of the bent pipe.

[0004] Currently, in order to meet the processing requirements of thick-walled pipes, small bending radii, or complex shapes, existing duplex stainless steel pipe bending forming equipment mainly adopts hot bending forming technology. Hot bending forming effectively reduces the forming load by bending the material after heating it to a certain temperature, making the processing smoother and enabling it to handle complex shapes that are difficult to form under traditional cold bending conditions.

[0005] However, existing duplex stainless steel bending forming equipment still suffers from poor temperature control. If the hot forming temperature is too low, deformation will accumulate in the weaker and less ductile ferrite, causing severe cracking of the ferrite in the deformation zone. If the hot forming temperature is too high, the ferrite becomes very soft and may thermally tear. Furthermore, improper temperature control during the heating process of duplex stainless steel can easily lead to changes in the internal microstructure of the material, potentially resulting in the precipitation of harmful phases, such as the σ phase. The appearance of these harmful phases severely impairs the mechanical properties and corrosion resistance of the material, thus affecting the overall quality and service life of the bent pipe. Utility Model Content

[0006] The purpose of this invention is to provide a duplex stainless steel pipe bending forming device, which solves the technical problem of poor temperature control in the prior art.

[0007] This utility model discloses a duplex stainless steel pipe bending forming device, comprising:

[0008] Workbench;

[0009] A rotating disk is installed on the top surface of the worktable;

[0010] A drive mechanism is mounted on the worktable and is connected to the rotary disk via a transmission.

[0011] The pipe bending mold is slidably installed on the top surface of the rotating disk and is composed of right-angled sector blocks and rectangular blocks, with pipe bending grooves opened on the side.

[0012] The first cylinder is installed on the top surface of the rotating disk and is connected to the bending mold via a transmission.

[0013] The support plate is integrally formed on one end of the rotating disk;

[0014] The second cylinder is installed on the top surface of the support plate;

[0015] The bending die is mounted on one side of the drive end of the second cylinder and on the other side, which corresponds to the rectangular block and has a bending groove that matches the bending groove.

[0016] The third cylinder is installed on the top surface of the worktable;

[0017] A support block is installed on the drive end of the third cylinder;

[0018] An induction coil is mounted on the support block.

[0019] This application uses an induction coil to rapidly and uniformly heat the area of ​​the pipe to be bent. After heating, the bending die and the pressure bending die move towards the pipe simultaneously, fixing the pipe between the bending groove and the pressure bending groove. Finally, the bending is completed by the rotation of the rotating disk and the support plate. The temperature control is precise and the bending speed is fast, reducing the natural cooling of the pipe above the forming temperature. This ensures that the pipe can be hot-bent within a suitable temperature range, thus avoiding bending cracks and tears. It also ensures that no harmful third phase is generated in the internal structure of the material, guaranteeing the overall quality and service life of the bent pipe.

[0020] Based on the above technical solution, the solution of this application can be further improved as follows:

[0021] Preferably, a receiving groove corresponding to the rotating disk and the support plate is provided on one side of the top surface of the workbench; this solution serves to limit and install, ensuring that it can be accurately reset, thereby improving the accuracy of bending.

[0022] Preferably, the workbench has an equipment room inside;

[0023] The drive mechanism includes:

[0024] The drive shaft is arranged vertically and rotatably connected to the worktable, with one end inserted into the center of the bottom surface of the rotary disk and the other end passing through the equipment chamber;

[0025] Support base, installed inside the equipment room;

[0026] The drive motor is mounted on the support base and is connected to the drive shaft. This design ensures that the rotating disk can rotate stably and efficiently, while also facilitating the maintenance and repair of the drive mechanism.

[0027] Preferably, it includes:

[0028] Multiple guide rails are arranged side by side at intervals and installed on the top surface of the rotating disk;

[0029] Multiple sliders, corresponding one-to-one with the guide rails and slidably connected, are installed on the bottom surface of the bending die. This design enables the bending die to move precisely and stably on the rotary table, thereby ensuring the accuracy and efficiency of the bending operation. In addition, the design of multiple guide rails and sliders also increases the stability and smoothness of the entire device.

[0030] Preferably, it includes:

[0031] A limiting baffle is installed on the top surface of the rotating disk;

[0032] Multiple stop blocks are installed on the side of the bending die near the first cylinder. This design limits the movement range of the bending die, ensuring that it does not move out of the predetermined track or area, improving the accuracy and safety during movement, and enhancing the operational stability of the equipment.

[0033] Preferably, it includes:

[0034] The fourth cylinder is mounted on the top surface of the worktable;

[0035] Guide bars are installed on the drive end of the fourth cylinder;

[0036] An auxiliary mold is slidably connected to the guide bar on one side, and an auxiliary groove matching the bend groove is opened on the other side;

[0037] An elastic reset structure is located between the guide bar and the auxiliary die; this solution together forms a precise auxiliary mechanism that provides necessary support and positioning during the pipe bending process, greatly improving the accuracy and efficiency of the pipe bending operation.

[0038] Preferably, the guide bar has a linear groove on the side near the auxiliary mold;

[0039] The elastic reset structure includes:

[0040] A crossbar is provided within the linear groove;

[0041] The drive sleeve is slidably mounted on the crossbar and connected to the auxiliary mold.

[0042] A reset spring is movably sleeved on the crossbar and constrained between the drive sleeve and the side wall of the linear groove. This solution achieves the function of automatic reset. When the external force is removed, the auxiliary mold can automatically return to the initial position, which improves the compactness of the structure and increases the convenience and reliability of use.

[0043] Through the above technical solution, this utility model achieves the following beneficial effects:

[0044] This application uses an induction coil to rapidly and uniformly heat the area of ​​the pipe to be bent. After heating, the bending die and the pressure bending die move towards the pipe simultaneously, fixing the pipe between the bending groove and the pressure bending groove. Finally, the bending is completed by the rotation of the rotating disk and the support plate. The temperature control is precise and the bending speed is fast, reducing the natural cooling of the pipe above the forming temperature. This ensures that the pipe can be hot-bent within a suitable temperature range, thus avoiding bending cracks and tears. It also ensures that no harmful third phase is generated in the internal structure of the material, guaranteeing the overall quality and service life of the bent pipe. Attached Figure Description

[0045] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 This is a top cross-sectional view of the duplex stainless steel pipe bending forming apparatus described in a specific embodiment;

[0047] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0048] Figure 3 for Figure 1 The diagram shows a side sectional view of the duplex stainless steel pipe bending forming apparatus.

[0049] Figure 4 for Figure 1 The diagram shows a top cross-sectional view of the duplex stainless steel pipe bending forming device at the initial heating stage.

[0050] Figure 5 for Figure 1 The diagram shows a top cross-sectional view of the duplex stainless steel pipe bending forming apparatus at the end of heating.

[0051] Figure 6 for Figure 1 The diagram shows a top cross-sectional view of the duplex stainless steel pipe bending forming device during clamping and fixing.

[0052] Figure 7 for Figure 1 The diagram shows a top cross-sectional view of the duplex stainless steel pipe bending forming device during the bending process.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Worktable; 2. Rotary disk; 3. Drive mechanism; 4. Bending die; 5. First cylinder; 6. Support plate; 7. Second cylinder; 8. Press bending die; 9. Third cylinder; 10. Support block; 11. Induction coil; 12. Guide rail; 13. Slider; 14. Limiting baffle; 15. Stop block; 16. Fourth cylinder; 17. Guide support bar; 18. Auxiliary pressing die; 19. Elastic reset structure;

[0055] 101. Reception groove; 102. Equipment room; 401. Pipe bend groove; 801. Press-bending groove; 1701. Linear groove; 1801. Auxiliary groove;

[0056] 31. Drive shaft; 32. Support base; 33. Drive motor; 41. Right-angle sector block; 42. Rectangular block; 191. Crossbar; 192. Drive sleeve; 193. Return spring. Detailed Implementation

[0057] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0058] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are all derived from the normal orientation of the components in the duplex stainless steel bending forming device. 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 component 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.

[0059] Furthermore, the terms “first”, “second”, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as “first” or “second” may explicitly or implicitly include one or more of the stated features.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0062] Example:

[0063] like Figures 1-3 As shown in the figure, this application discloses a duplex stainless steel pipe bending forming device for hot bending forming of duplex stainless steel pipes, which has the advantages of precise and stable temperature control; its specific structure includes: a worktable 1, a rotary disk 2, a drive mechanism 3, a pipe bending mold 4, a first cylinder 5, a support plate 6, a second cylinder 7, a bending die 8, a third cylinder 9, a support block 10, and an induction coil 11.

[0064] Workbench 1 is used to provide a stable platform for supporting other components.

[0065] The rotary disk 2 is installed on the top surface of the workbench 1 and can rotate horizontally to provide the necessary rotation action, ensuring that the pipe can be evenly stressed and form the required bending shape.

[0066] The drive mechanism 3 is mounted on the worktable 1 and is connected to the rotary disk 2 for transmission, and is used to provide the power required for the rotation of the rotary disk 2.

[0067] The pipe bending mold 4 is slidably installed on the top surface of the rotating disk 2 and is composed of a right-angled fan-shaped block 41 and a rectangular block 42, with a pipe bending groove 401 on the side. The right-angled fan-shaped block 41 is used for bending and is adapted to bending requirements of 0°-90°. The rectangular block 42 is used for clamping and fixing the end of the pipe, ensuring a smooth and stable bending process. The pipe bending groove 401 is used to ensure the accurate positioning of the pipe during the bending process.

[0068] The first cylinder 5 is installed on the top surface of the rotating disk 2 and is connected to the bending mold 4 for transmission, and is used to control the position of the bending mold 4 on the rotating disk 2.

[0069] The support plate 6 is integrally formed on one end of the rotating disk 2 and is used to provide a support area for the second cylinder 7.

[0070] The second cylinder 7 is installed on the top surface of the support plate 6 and is used to control the position of the bending die 8, so that it is close to or away from the rectangular block 42.

[0071] One side of the bending die 8 is installed on the drive end of the second cylinder 7, and the other side corresponds to the rectangular block 42. It is provided with a bending groove 801 that matches the bending groove 401. When the two are close together, the pipe is tightly fixed between the two grooves, so that the pipe can stably form the required bend when subjected to pressure.

[0072] The third cylinder 9 is installed on the top surface of the workbench 1 and is used to adjust the position of the support block 10.

[0073] The support block 10 is installed on the drive end of the third cylinder 9 to support and position the induction coil 11, ensuring that it remains stable and accurate during operation.

[0074] The induction coil 11 is mounted on the support block 10 for induction heating, which can quickly and evenly heat the tube, making it easier to shape during bending, while reducing material stress and cracks.

[0075] It should be noted that induction heating is a technology that uses the principle of electromagnetic induction to heat conductive materials. It directly heats the interior of the material through an electromagnetic field, reducing heat conduction losses in traditional heating methods. The energy utilization rate can reach 60%-80%, significantly reducing energy consumption. Moreover, the heating speed is extremely fast, and by adjusting the current frequency and power, the heating temperature and temperature uniformity can be precisely controlled, making it suitable for precision heat treatment. In addition, non-contact heating avoids fuel combustion or external pollution and has no exhaust emissions, meeting the requirements of green manufacturing.

[0076] The working principle of the above technical solution is as follows:

[0077] Before use, connect the induction coil 11 to an external high-frequency power supply device so that a high-frequency current can be passed through the induction coil 11, thereby generating an alternating magnetic field, which causes induced eddy currents to be generated inside the workpiece to generate heat.

[0078] First, such as Figure 4 As shown, the pipe is horizontally passed through the induction coil 11 by the conveying mechanism and advanced between the bending die 8 and the rectangular block 42, so that the area to be bent is aligned between the right-angled sector block 41 and the rectangular block 42; then the support block 10 is driven by the third cylinder 9 to move along the direction of pipe advance, so that the induction coil 11 moves to the beginning of the area to be bent in the pipe.

[0079] Secondly, such as Figure 5 As shown, the support block 10 is driven to reset at a constant speed by the third cylinder 9, and at the same time, a high-frequency current is passed through the induction coil 11, so that the induction coil 11 heats the area of ​​the pipe to be bent quickly and evenly.

[0080] Then, as Figure 6As shown, the first cylinder 5 drives the bending die 4 to approach the pipe, and the second cylinder 7 drives the pressing die 8 to approach the pipe. So when the two reach the end of their stroke, the pipe is just firmly fixed between the bending groove 401 and the pressing groove 801.

[0081] Ultimately, as Figure 7 As shown, the rotating disk 2 is driven to rotate by the driving mechanism 3. The rotating disk 2 drives the support plate 6, which is integrally formed with it, to rotate synchronously. This causes the other components installed on both to rotate as well, thereby causing the pipe to bend and form along the bending groove 401.

[0082] It should be noted that the bending angle of the tube bend is consistent with the rotation angle of the rotating disk 2, and can be adjusted according to actual needs; after the tube bend mold 4 moves to the end of its stroke, its center coincides with the center of the rotating disk 2, thus ensuring the stability of the rotational bending.

[0083] It should be noted that the temperature control for hot bending of duplex stainless steel needs to take into account both the plasticity of the material and the suppression of harmful phases. The heating temperature is usually controlled in the range of 950-1100℃. If the temperature is below 950℃, the deformation will accumulate in the weaker and less plastic ferrite, resulting in severe cracking of the ferrite in the deformation zone. If the temperature exceeds 1100℃, the ferrite becomes very soft and may be thermally torn.

[0084] This invention uses an induction coil 11 to rapidly and uniformly heat the area of ​​the pipe to be bent. After heating, the bending die 4 and the pressure bending die 8 move towards the pipe simultaneously, fixing the pipe between the bending groove 401 and the pressure bending groove 801. Finally, the bending is completed by the rotation of the rotating disk 2 and the support plate 6. The temperature control is precise and the bending speed is fast, reducing the impact of natural cooling of the pipe and ensuring that the pipe can be hot-bent within a suitable temperature range. This avoids changes in the internal structure of the material and ensures the overall quality and service life of the bent pipe.

[0085] In some embodiments, such as Figure 1 As shown, a receiving groove 101 corresponding to the rotating disk 2 and the support plate 6 is provided on one side of the top surface of the workbench 1.

[0086] Specifically, after the rotary disk 2 and the first cylinder 5 are installed in the receiving groove 101, their top surfaces are flush with the top surface of the worktable 1, thereby improving the regularity and compactness of the structure.

[0087] The receiving groove 101 serves to install and limit the bending, ensuring accurate resetting and thus improving the accuracy of bending.

[0088] In some embodiments, such as Figure 3As shown, the workbench 1 has an equipment chamber 102 inside, which is used to house and protect the drive mechanism 3 installed therein, ensuring the safety and stability of the drive mechanism 3, and also facilitating maintenance and repair.

[0089] In this embodiment, the drive mechanism 3 includes:

[0090] The drive shaft 31 is arranged vertically and rotatably connected to the worktable 1. One end is inserted into the center of the bottom surface of the rotary disk 2, and the other end passes through the equipment chamber 102.

[0091] Support base 32, which is installed inside equipment room 102, is used to provide a stable and solid foundation;

[0092] The drive motor 33 is mounted on the support base 32 and is connected to the drive shaft 31 for generating rotational power.

[0093] The design of the drive mechanism 3 described above ensures that the rotating disk 2 can rotate stably and efficiently, while also facilitating the maintenance and repair of the drive mechanism 3.

[0094] In some embodiments, such as Figure 3 As shown, it includes:

[0095] Multiple guide rails 12 are arranged side by side with intervals between them and are installed on the top surface of the rotating disk 2;

[0096] Multiple sliders 13 correspond one-to-one with guide rails 12 and are slidably connected, and are installed on the bottom surface of the bending mold 4.

[0097] The above-mentioned settings enable the bending die 4 to move precisely and stably on the rotary table 2, thereby ensuring the accuracy and efficiency of the bending operation; in addition, the design of multiple guide rails 12 and sliders 13 also increases the stability and smoothness of the entire device.

[0098] In some embodiments, such as Figure 1 and Figure 3 As shown, it includes:

[0099] The limiting baffle 14 is installed on the top surface of the rotating disk 2 to limit the movement range of the bending die 4 and ensure that it does not move out of the predetermined track or area.

[0100] Multiple stop blocks 15 are installed on the side of the bending die 4 near the first cylinder 5 to cooperate with the limit baffle 14 and play a limiting role.

[0101] The above settings limit the movement range of the bending mold 4, ensuring that it does not move out of the predetermined track or area, thereby improving the accuracy and safety during movement and enhancing the operational stability of the equipment.

[0102] In some embodiments, such as Figures 1-3 As shown, it includes:

[0103] The fourth cylinder 16 is mounted on the top surface of the worktable 1 and is used as a power source to provide driving force to control the connected components to perform actions.

[0104] The guide bar 17, which is installed on the drive end of the fourth cylinder 16, is used to guide and support the movement of the auxiliary mold 18, ensuring that it moves along a predetermined trajectory.

[0105] The auxiliary pressure mold 18 is slidably connected to the guide support 17 on one side, so as to allow it to move under the guidance of the guide support 17. The other side is provided with an auxiliary groove 1801 that matches the bending groove 401. It is used to cooperate with the bending groove 401 on the bending mold 4 during the bending process to clamp and position the pipe, so as to ensure the accuracy and stability of the bending operation.

[0106] The elastic reset structure 19 is located between the guide support 17 and the auxiliary mold 18. It helps the auxiliary mold 18 return to its initial position after it has finished its work, thus preparing it for the next operation.

[0107] The working principle of the above technical solution is as follows:

[0108] First, such as Figure 6 As shown, when the bending die 4 and the pressing die 8 clamp and fix the pipe, the fourth cylinder 16 drives the guide support 17 to move closer to the pipe. The guide support 17 drives the auxiliary pressing die 18 to move together until the auxiliary groove 1801 and the pipe are engaged and fixed.

[0109] Then, as Figure 7 As shown, when the pipe is bent, since the auxiliary groove 1801 is engaged and fixed with the pipe, the auxiliary mold 18 will move forward with the pipe. Thus, the auxiliary mold 18 will move along a predetermined trajectory under the guidance of the guide bar 17, and at the same time, it will compress the elastic reset structure 19.

[0110] Finally, when the bending is completed, the fourth cylinder 16 drives the guide bar 17 to reset, so the auxiliary groove 1801 is no longer locked with the pipe. As a result, the elastic reset structure 19 will no longer be subjected to external force, and the drive auxiliary mold 18 will automatically return to its original state, thus ensuring the continuous and stable operation of the equipment.

[0111] The above settings together form a precise auxiliary mechanism that provides necessary support and positioning during the pipe bending process, greatly improving the accuracy and efficiency of the pipe bending operation.

[0112] Based on the above embodiments, such as Figure 1 and Figure 2 As shown, the guide bar 17 has a linear groove 1701 on the side near the auxiliary mold 18 for installing the elastic reset structure 19, thereby improving the structural compactness.

[0113] In this embodiment, the elastic reset structure 19 includes:

[0114] A crossbar 191 is provided in a linear groove 1701 and serves as a basic support component.

[0115] The drive sleeve 192 is slidably sleeved on the crossbar 191, so that it can move freely on the crossbar 191 and is connected to the auxiliary mold 18 to drive the auxiliary mold 18 to move together.

[0116] The return spring 193 is movably sleeved on the crossbar 191 and constrained between the drive sleeve 192 and the side wall of the linear groove 1701, and is used to apply a return force to the drive sleeve 192.

[0117] When the drive sleeve 192 slides along the crossbar 191 due to the movement of the auxiliary mold 18, the return spring 193 is compressed. When the auxiliary mold 18 is no longer subjected to external force, the return spring 193 will rebound, thereby returning the drive sleeve 192 and the auxiliary mold 18 connected to it to their original positions.

[0118] The above design of the elastic reset structure 19 realizes the function of automatic reset. When the external force is removed, the auxiliary mold 18 can automatically return to the initial position, which improves the compactness of the structure and increases the convenience and reliability of use.

[0119] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0120] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A device for forming a bend in a duplex stainless steel pipe, characterized by It include: Workbench; Rotary disc, installed on the top surface of the workbench; Driving mechanism, installed on the workbench, and in transmission connection with the rotary disc; Elbow die, slidingly installed on the top surface of the rotary disc, and composed of right-angle sector block and rectangular block, and side surface is provided with elbow slot; First cylinder, installed on the top surface of the rotary disc, and in transmission connection with the elbow die; Support plate, integrally formed on one end of the rotary disc; Second cylinder, installed on the top surface of the support plate; Bending die, one side is installed on the driving end of the second cylinder, and the other side corresponds to the rectangular block, and is provided with bending slot matched with the elbow slot; Third cylinder, installed on the top surface of the workbench; Support block, installed on the driving end of the third cylinder; Induction coil, installed on the support block.

2. The dual-phase stainless steel elbow forming device of claim 1, wherein The top surface of the workbench is provided with accommodating groove corresponding to the rotary disc and the support plate.

3. The dual-phase stainless steel elbow forming device of claim 1, wherein The workbench is internally provided with equipment room; The driving mechanism includes: Driving shaft, vertically arranged, in rotation connection with the workbench, and one end is inserted into the center of the bottom surface of the rotary disc, and the other end penetrates into the equipment room; Support seat, installed in the equipment room; Driving motor, installed on the support seat, and in transmission connection with the driving shaft.

4. The dual-phase stainless steel elbow forming device of claim 1, wherein, It includes: A plurality of guide rails, arranged in parallel and spaced apart, and installed on the top surface of the rotary disc; A plurality of sliding blocks, corresponding to the guide rails one by one and in sliding connection, and installed on the bottom surface of the elbow die.

5. The dual-phase stainless steel elbow forming device of claim 1, wherein, It includes: Limiting baffle, installed on the top surface of the rotary disc; A plurality of stop blocks, installed on one side of the elbow die close to the first cylinder.

6. The dual-phase stainless steel elbow forming device of claim 1, wherein, It includes: Fourth cylinder, installed on the top surface of the workbench; Guide strut, installed on the driving end of the fourth cylinder; Auxiliary die, one side is in sliding connection with the guide strut, and the other side is provided with auxiliary slot matched with the elbow slot; Elastic reset structure, provided between the guide strut and the auxiliary die.

7. The dual-phase stainless steel elbow forming device of claim 6, wherein, The side of the guide strut close to the auxiliary die is provided with linear slot; The elastic reset structure includes: Cross bar, provided in the linear slot; Driving sleeve, slidingly sleeved on the cross bar, and connected with the auxiliary die; Reset spring, movably sleeved on the cross bar, and constrained between the driving sleeve and the side wall of the linear slot.

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