Seamless steel elbow production device and process

Abstract

The invention relates to the technical field of steel elbow production devices, and discloses a seamless steel elbow production device which comprises a first supporting assembly and a second supporting assembly, the second supporting assembly is fixedly installed on one side of the first supporting assembly, and an outer barrel is movably installed between the first supporting assembly and the second supporting assembly. According to the seamless steel elbow production device and process, the outer barrel is arranged, and the adjusting assembly capable of being driven to rotate through rotation of the inner transmission assembly is arranged in the outer barrel, so that the adjusting assembly stretches out and draws back in the rotating process, and the length from a supporting end at the end to the rotating center of the outer barrel is adjusted; in this way, the device can adapt to bending operation of steel pipes with different bending radiuses, meanwhile, rotation of the inner transmission assembly is achieved through the attraction or repulsion effect of magnetic force in the presence of the permanent magnet ring, and the adjusting assembly can be driven to adjust or the outer barrel can be driven to rotate so that winding and bending operation of the steel pipes can be conducted.

Description

Technical Field

[0001] The present invention relates to the technical field of steel elbow production devices, and particularly to a seamless steel elbow production device and process. Background Technique

[0002] Seamless steel elbows are widely used in pipeline systems in industries such as petroleum, chemical engineering, and natural gas. Their production quality directly affects the safety and service life of pipelines. Traditional seamless steel elbows are generally produced by casting or forging methods. However, due to the poor mechanical properties of the products produced by the above processes, it is difficult to meet the requirements of harsh working conditions such as high pressure and high temperature. Therefore, the existing technology gradually adopts the hot push elbow production method, which uses an electromagnetic heating coil to heat the blank pipe, and then uses a hydraulic pusher to push the blank pipe to bend to complete the production. However, there are still some problems in the use of existing production devices, specifically as follows:

[0003] When the existing elbow production device bends the heated steel pipe, it cannot well control the bending curvature of the bent part. It mainly uses a bending die to guide the bending of the steel pipe. Although this can ensure the bending effect to a certain extent, during the process, the heated part needs to be completely extended outside the die, and finally, an external hydraulic pushing structure is used to push the steel pipe to bend to achieve the bending operation. However, this method cannot make the heated part bend step by step in sections. Directly bending all at once will cause the bent part to not fit well with the die to achieve precise bending operation. Moreover, the existing bending device cannot effectively adjust according to steel pipes of different diameters, resulting in poor use efficiency and poor use effect of the device. Therefore, we propose a seamless steel elbow production device and process. Summary of the Invention

[0004] The present invention provides a seamless steel elbow production device and process, which have the advantages of good bending effect and strong applicability, and solve the problems raised in the above background technique.

[0005] The present invention provides the following technical solution: A seamless steel elbow production device, including a first support component and a second support component. A driving motor is fixedly installed at the outer top end of the first support component. A second support component is fixedly installed on one side of the first support component. An outer cylinder is movably installed between the first support component and the second support component. An outer tooth ring is fixedly installed on the outer side of one side of the outer cylinder. A side limit component is fixedly installed at the top end of the second support component. A sliding seat is movably installed on the outer tooth ring. An inner locking component is movably installed inside the sliding seat. A clamping elbow is fixedly installed on the sliding seat. An inner transmission component is fixedly installed on the output shaft of the driving motor. A permanent magnet ring is fixedly installed inside the outer cylinder. An inner limit component is fixedly installed inside the outer cylinder. An adjusting component is movably installed on the inner limit component. A support end is fixedly installed at the end of the adjusting component;

[0006] The second support component includes a support frame. A bearing groove is opened on one side of the top end of the support frame. A locking jack is opened on one side of the top end of the support frame;

[0007] The side limit component includes a vertical rod. An electric telescopic rod is fixedly installed on one side of the top end of the vertical rod. A plug board is fixedly installed at the end of the electric telescopic rod;

[0008] The inner locking component includes a straight plate. An arc plate is fixedly installed at one end of the straight plate. A locking plug is fixedly installed at the bottom end of the arc plate. A base block is fixedly installed on the upper surface of the straight plate. A spring is fixedly installed on one side of the base block;

[0009] The clamping elbow includes a hydraulic long rod. A cross plate is fixedly installed at the top end of the hydraulic long rod. A clamping head is installed at the bottom end of the cross plate;

[0010] The inner transmission component includes an inner transmission rod. An electromagnetic ring is fixedly installed on one side of the inner transmission rod. A circular plate is fixedly installed at the end of the inner transmission rod. A transmission tooth ring is fixedly installed on one side of the circular plate. An extended transmission rod is fixedly installed in the middle of one side of the circular plate. A locking plug-in is fixedly installed at the end of the extended transmission rod;

[0011] The inner limit component includes a central block. Limit straight rods are annularly installed on the central block. A support leg is fixedly installed on one side of the central block;

[0012] The adjusting component includes an outer straight cylinder. A driven gear is fixedly installed at the bottom end of the outer straight cylinder. An inner screw rod is threadedly connected inside the outer straight cylinder. A limit hole is opened inside the inner screw rod.

[0013] In a preferred embodiment, the outer tooth ring is arranged on the same side as the side limiting component, the tooth grooves on the outer tooth ring are arranged on the side far from the side limiting component, the number of the clamping folding heads is two, and the inner locking component controls the locking and unlocking relationship between the bottom sliding seat and the outer tooth ring.

[0014] In a preferred embodiment, the bearing groove is segmented, the inner diameter is larger on the side close to the outer cylinder and smaller on the other side, and the two parts are communicated. The locking jacks are annularly and densely arranged on the outer side of the bearing groove. The top end of the first support component is provided with the same structure as the bearing groove, and both ends of the outer cylinder are rotatably arranged in the bearing groove.

[0015] In a preferred embodiment, the bottom end of the vertical rod is fixedly installed at the top end of the support frame. The insertion plate can be inserted into the inner part of the sliding seat for limit locking, and the cross-section of the insertion plate is the same as the cross-sectional shape and size of the end part of the inner locking component.

[0016] In a preferred embodiment, the straight plate is movably inserted into the inner part of the sliding seat. The locking plug can be adaptively inserted into the outer tooth ring. The locking plug is inserted into the outer tooth ring under non-force condition. One end of the outer part of the straight plate is in an extended state when the locking plug is inserted into the outer tooth ring and can be in contact with the insertion plate.

[0017] In a preferred embodiment, the bottom end of the hydraulic long rod is fixedly installed on the sliding seat. The number of the clamping heads is two. The clamping head located in the vertical direction is rotatably arranged at the bottom end of the cross plate, and the other clamping head is fixedly connected with the cross plate. The clamping head is detachably installed and is provided with an arc-shaped groove structure adapted to the outer wall of the steel pipe.

[0018] In a preferred embodiment, the permanent magnet ring is fixedly connected inside the outer cylinder through an extension long rod. The electromagnetic ring is arranged opposite to one side of the permanent magnet ring. The inner transmission rod is of a telescopic structure, and the telescopic end is arranged inside the outer cylinder and the other end is fixedly connected with the output shaft of the driving motor. The transmission tooth ring and the adjusting component can be separated or meshed. A plurality of pin rods are annularly arranged on one side of the locking plug close to the second support component, and the pin rods can be inserted into the locking jacks.

[0019] In a preferred embodiment, the central block is of a polygonal structure and the number of sides of the polygon is the same as the number of adjusting components. The cross-section of the limiting straight rod is rectangular. The end part of the support leg is fixedly connected with the inner surface of the outer cylinder. The adjusting component is inserted on the limiting straight rod and is movably arranged.

[0020] In a preferred embodiment, the outer straight cylinder is rotatably embedded in the outer cylinder body, the bottom end of the inner screw rod can be detachably arranged from the central block, the limiting hole is movably arranged by being inserted on the limiting straight rod, and the bottom end of the supporting end head is detachably connected to the end of the inner screw rod.

[0021] A seamless steel elbow production device has the following specific process steps:

[0022] S1. Heat the steel pipe using an electromagnetic coil, and then use an external feeding mechanism to push the end of the steel pipe between the clamping folding elbow and the supporting end head.

[0023] S2. Start the side limiting component to lock the position of the vertically arranged clamping folding elbow, send the end of the steel pipe between the clamping folding elbow and the supporting end head, adjust the length of the hydraulic long rod so that the clamping head clamps the steel pipe, and then turn on the power supply of the electromagnetic ring to make it magnetically attracted to the permanent magnet ring.

[0024] S3. The driving motor drives the inner transmission component to drive the outer cylinder body to rotate, and the other clamping folding elbow rotates synchronously with the outer cylinder body under the locking action of the sliding seat and the outer tooth ring. The external feeding structure continuously pushes the steel pipe towards the outer cylinder body. At the same time, the rotation of the outer cylinder body clamps and rotates one end of the steel pipe to realize the bending of the steel pipe.

[0025] S4. Remove the bent steel pipe from the device for later use.

[0026] The present invention has the following beneficial effects:

[0027] 1. For the seamless steel elbow production device and process, by providing an outer cylinder body and an adjusting component that can be rotated and driven by the inner transmission component inside the outer cylinder body, the adjusting component itself expands and contracts during rotation, realizing the adjustment of the length of the supporting end head from the rotation center of the outer cylinder body. This enables the device to adapt to the bending operations of steel pipes with different bending radii. At the same time, in the presence of the permanent magnet ring, the rotation of the inner transmission component is achieved by the attraction or repulsion of magnetic forces, which can drive the adjusting component to adjust respectively or drive the outer cylinder body to rotate for the winding and bending operation of the steel pipe. Compared with the die guidance of the prior art, the device can ensure that the bent steel pipe does not slide relative to the supporting end head after fitting, and will rotate with the rotation of the outer cylinder body. Moreover, the pushing mechanism for the steel pipe at the other end will gradually push the heated part onto the supporting end head for progressive bending, avoiding directly bending all the heated parts at once, greatly ensuring the fitting degree of the steel pipe after bending and thus ensuring the bending effect of the steel pipe.

[0028] 2. The seamless steel elbow production device and process have corresponding bearing grooves and locking jacks on the second support component. At the same time, a structure with the same size as the bearing groove is also provided on the first support component, and a slot hole with a size smaller than the inner ring of the bearing groove is provided at the center position of the first support component. This enables the first support component and the second support component to ensure the support effect on the outer cylinder while also providing a support effect on the drive motor and the inner transmission component connected to its output shaft. The inner transmission component passes through the inner limit component and is supported and connected in the outer cylinder. The locking plug provided at the other end of the inner transmission component can form magnetic repulsion or magnetic attraction with the magnetic ring at the center of the permanent magnet ring when the current direction is changed by the energized electromagnetic ring to change the magnetic pole, thereby controlling the insertion and extraction operation of the locking plug in the locking jack. When inserted into the locking jack, the outer cylinder is locked and cannot rotate, and the rotation of the inner transmission component drives the telescopic adjustment of the adjustment component. When the locking plug is pulled out of the locking jack, the electromagnetic ring and the permanent magnet ring are magnetically attracted, and the locking plug at the end is unlocked and the outer cylinder is driven to rotate by the permanent magnet ring through the electromagnetic ring, thereby realizing the bending operation of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0030] Figure 2 Schematic three-dimensional structure diagram of the present invention with the steel pipe removed;

[0031] Figure 3 Schematic front sectional structure diagram of the present invention with the clamping elbow removed;

[0032] Figure 4 Schematic side sectional structure diagram of the present invention with the clamping elbow removed;

[0033] Figure 5 Schematic first partial three-dimensional structure diagram of the present invention;

[0034] Figure 6 Schematic second partial three-dimensional structure diagram of the present invention;

[0035] Figure 7 Schematic three-dimensional structure diagram of the connection between the inner transmission component and the inner limit component of the present invention;

[0036] Figure 8 Schematic third partial three-dimensional structure diagram of the present invention;

[0037] Figure 9 Schematic three-dimensional structure diagram of the adjustment component and the support end of the present invention;

[0038] Figure 10 Schematic three-dimensional structure diagram of the connection between the second support component and the side limit component of the present invention;

[0039] Figure 11This is a three-dimensional structural schematic diagram of the internal locking component of the present invention.

[0040] In the figure: 1. First support component; 2. Second support component; 21. Support frame; 22. Bearing groove; 23. Locking jack; 3. Driving motor; 4. Outer cylinder; 5. Outer tooth ring; 6. Side limit component; 61. Vertical rod; 62. Electric telescopic rod; 63. Insertion plate; 7. Slide seat; 8. Internal locking component; 81. Straight plate; 82. Arc plate; 83. Locking plug; 84. Base block; 85. Spring; 9. Clamping elbow; 91. Hydraulic long rod; 92. Cross plate; 93. Clamping head; 10. Internal transmission component; 101. Internal transmission rod; 102. Electromagnetic ring; 103. Circular plate; 104. Transmission tooth ring; 105. Extended transmission rod; 106. Locking plug-in; 11. Permanent magnet ring; 12. Internal limit component; 121. Central block; 122. Limit straight rod; 123. Support leg; 13. Adjustment component; 131. Outer straight cylinder; 132. Driven gear; 133. Internal screw; 134. Limit hole; 14. Support end. Detailed implementation manners

[0041] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of each structure described in the following implementation manners are only examples. The seamless steel elbow production device and process involved in the present invention are not limited to the structures described in the following implementation manners. All other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0042] Please refer to Figures 1-4 , a seamless steel elbow production device, including a first support component 1 and a second support component 2. A second support component 2 is fixedly installed on one side of the first support component 1. A driving motor 3 is fixedly installed at the outer top end of the first support component 1. An outer cylinder 4 is movably installed between the first support component 1 and the second support component 2. An outer tooth ring 5 is fixedly installed on the outer side of the outer cylinder 4. A side limit component 6 is fixedly installed at the top end of the second support component 2. A slide seat 7 is movably installed on the outer tooth ring 5. An internal locking component 8 is movably installed inside the slide seat 7. A clamping elbow 9 is fixedly installed on the slide seat 7. An internal transmission component 10 is fixedly installed on the output shaft of the driving motor 3. A permanent magnet ring 11 is fixedly installed inside the outer cylinder 4. An internal limit component 12 is fixedly installed inside the outer cylinder 4. An adjustment component 13 is movably installed on the internal limit component 12. A support end 14 is fixedly installed at the end of the adjustment component 13;

[0043] Compared with the prior art, in the present application, an outer cylinder 4 is provided. Inside the outer cylinder 4, an adjusting assembly 13 is provided which can be rotated and driven by an inner transmission assembly 10. As a result, the adjusting assembly 13 itself expands and contracts during rotation, realizing the adjustment of the length of the supporting end 14 at the end from the rotation center of the outer cylinder 4. In this way, the device can adapt to the bending operations of steel pipes with different bending radii. At the same time, in the presence of the permanent magnet ring 11, the rotation of the inner transmission assembly 10 is realized by the attraction or repulsion of magnetic forces, which can drive the adjusting assembly 13 to adjust respectively or drive the outer cylinder 4 to rotate for the winding and bending operation of the steel pipe. Compared with the die guiding of the prior art, when the bent steel pipe fits with the supporting end 14, there will be no relative sliding, and it will rotate with the rotation of the outer cylinder 4. Moreover, the pushing mechanism for the steel pipe at the other end will gradually push the heated part onto the supporting end 14 for progressive bending, avoiding directly bending all the heated parts at once, greatly ensuring the fitting degree between the bent steel pipe and the supporting end 14, and thus ensuring the bending effect of the steel pipe. At the same time, corresponding bearing grooves 22 and locking jacks 23 are provided on the second support assembly 2. At the same time, a structure with the same size as the bearing groove 22 is also provided on the first support assembly 1. And a slot hole with a size smaller than the inner ring of the bearing groove 22 is provided at the central position of the first support assembly 1. This enables the first support assembly 1 and the second support assembly 2 to ensure the supporting effect on the outer cylinder 4 while also ensuring the supporting effect on the drive motor 3 and the inner transmission assembly 10 connected to its output shaft. And the inner transmission assembly 10 also passes through the inner limiting assembly 12 and is supported and connected in the outer cylinder 4. The locking plug 106 provided at the other end of the inner transmission assembly 10 can form a magnetic repulsive force or magnetic attractive force with the magnetic ring at the center of the permanent magnet ring 11 when the current direction is changed by switching the current after the electromagnetic ring 102 is energized, thereby controlling the insertion and extraction operations of the locking plug 106 in the locking jack 23. When inserted into the locking jack 23, the outer cylinder 4 is locked and cannot rotate, and the rotation of the inner transmission assembly 10 drives the expansion and contraction adjustment of the adjusting assembly 13. When pulled out from the locking jack 23, the electromagnetic ring 102 and the permanent magnet ring 11 are magnetically attracted, the locking of the locking plug 106 at the end is released, and the rotation of the electromagnetic ring 102 drives the outer cylinder 4 to rotate through the permanent magnet ring 11, thereby realizing the bending operation of the steel pipe.

[0044] Please refer to Figures 1-4 , a seamless steel elbow production device, including an external gear ring 5. The external gear ring 5 is arranged on the same side as the side limiting assembly 6. The tooth grooves on the external gear ring 5 are arranged on the side away from the side limiting assembly 6. The number of clamped folding elbows 9 is two, and the locking and unlocking relationship between the bottom sliding seat 7 and the external gear ring 5 is controlled by an inner locking assembly 8;

[0045] In this embodiment, it should be noted that by utilizing the control function of the inner locking component 8, the locking and unlocking operations of the clamping bending head 9 can be realized. Furthermore, during the process of bending the steel pipe, one clamping bending head 9 can rotate with the outer cylinder 4, while the other is locked in the vertical position to realize the limiting and guiding of the steel pipe, ensuring that the bent part of the steel pipe does not warp and unnecessary deformation occurs during the bending process, thereby ensuring the stability of the entire bending process of the steel pipe and the bending effect.

[0046] Please refer to Figures 1-10 , a seamless steel elbow production device, including a second support component 2. The second support component 2 includes a support frame 21. On one side of the top end of the support frame 21, a bearing groove 22 is opened, and a locking jack 23 is opened on one side of the top end of the support frame 21;

[0047] In this embodiment, it should be noted that the bearing groove 22 is opened in a segmented manner. The inner diameter on the side close to the outer cylinder 4 is large and the inner diameter on the other side is small, and the two parts are communicated. The locking jacks 23 are annularly and densely opened on the outer side of the bearing groove 22. The top end of the first support component 1 is provided with the same structure as the bearing groove 22. The two ends of the outer cylinder 4 are respectively rotatably arranged in the bearing groove 22. In this way, the two ends of the outer cylinder 4 can be freely rotated through the support of the bearing groove 22, and the part with a small inner diameter of the bearing groove 22 can also ensure that the inner transmission component 10 can freely rotate therein and is not restricted by the outer cylinder 4. Furthermore, it is ensured that the device can separate the driving of the outer cylinder 4 and the adjustment of the adjustment component 13 and use the same driving source, improving the integration degree of the device.

[0048] Please refer to Figures 1-10 , a seamless steel elbow production device, including a side limiting component 6. The side limiting component 6 includes a vertical rod 61. On one side of the top end of the vertical rod 61, an electric telescopic rod 62 is fixedly installed, and a plug board 63 is fixedly installed at the end of the electric telescopic rod 62;

[0049] In this embodiment, it should be noted that the bottom end of the vertical rod 61 is fixedly installed at the top end of the support frame 21. The plug board 63 can be inserted into the sliding seat 7 for internal limiting and locking. The cross-section of the plug board 63 is the same as the cross-section shape and size of the end of the inner locking component 8. In this way, when bending operations are carried out, the electric telescopic rod 62 can be extended to make the plug board 63 abut and insert into the sliding seat 7, realizing the locking of one of the clamping bending heads 9 in the vertical direction. The steel pipe is clamped by the clamping bending head 9 and the support end 14, and then the outer cylinder 4 is driven to rotate. The other clamping bending head 9 rotates with the rotation of the outer cylinder 4, and the steel pipe is fed and bent at the same time, so that the bent steel pipe fits on the support end 14, ensuring the bending effect.

[0050] Please refer to Figures 1-11, A seamless steel elbow production device, including an inner locking component 8. The inner locking component 8 includes a straight plate 81. One end of the straight plate 81 is fixedly installed with an arc plate 82. The bottom end of the arc plate 82 is fixedly installed with a locking plug 83. The upper surface of the straight plate 81 is fixedly installed with a base block 84. One side of the base block 84 is fixedly installed with a spring 85;

[0051] In this embodiment, it should be noted that the straight plate 81 is movably inserted inside the sliding seat 7, and the locking plug 83 is adapted to be inserted into the external gear ring 5. The locking plug 83 is inserted into the external gear ring 5 under non-force conditions. One end outside the straight plate 81 is in an extended state when the locking plug 83 is inserted into the external gear ring 5 and can be in contact with the insertion plate 63. In this way, when the bending operation is carried out, the straight plate 81 in the vertical position is compressed and abutted against the inside of the sliding seat 7 by the insertion plate 63, so that the insertion plate 63 is inserted into the sliding seat 7, and then the locking plug 83 is pulled out from the external gear ring 5. In this way, the clamped elbow 9 will not rotate with the rotation of the outer cylinder 4, and the other clamped elbow 9 will rotate with the rotation of the outer cylinder 4 by the clamping of the locking plug 83, and the end of the steel pipe is bent around the support end 14.

[0052] Please refer to Figures 1-2 , A seamless steel elbow production device, including a clamped elbow 9. The clamped elbow 9 includes a hydraulic long rod 91. The top end of the hydraulic long rod 91 is fixedly installed with a cross plate 92. The bottom end of the cross plate 92 is provided with a clamping head 93;

[0053] In this embodiment, it should be noted that the bottom end of the hydraulic long rod 91 is fixedly installed on the sliding seat 7. The number of clamping heads 93 is two. The clamping head 93 located in the vertical direction is rotatably arranged with the bottom end of the cross plate 92, and the other clamping head 93 is fixedly connected with the cross plate 92. The clamping head 93 is installed in a detachable structure and is provided with an arc groove structure adapted to the outer wall of the steel pipe. In this way, one end of the steel pipe is fixed under the clamping action of the clamping head 93 on the rotating hydraulic long rod 91, and then the steel pipe conveyed is conducted by the rotatable clamping head 93 on the non-rotating hydraulic long rod 91, so that the heated steel pipe can be slowly bent, avoiding directly bending the entire heated area at one time to ensure the bending effect.

[0054] Please refer to Figures 1-7 , A seamless steel elbow production device, including an inner transmission component 10. The inner transmission component 10 includes an inner transmission rod 101. One side of the inner transmission rod 101 is fixedly installed with an electromagnetic ring 102. The end of the inner transmission rod 101 is fixedly installed with a circular plate 103. One side of the circular plate 103 is fixedly installed with a transmission gear ring 104. The middle part of one side of the circular plate 103 is fixedly installed with an extended transmission rod 105. The end of the extended transmission rod 105 is fixedly installed with a locking plug-in 106;

[0055] In this embodiment, it should be noted that the permanent magnet ring 11 is fixedly connected inside the outer cylinder 4 through an extended long rod. The electromagnetic ring 102 is arranged opposite to one side of the permanent magnet ring 11. The inner transmission rod 101 is arranged as a telescopic structure, and the telescopic end is arranged inside the outer cylinder 4 while the other end is fixedly connected to the output shaft of the driving motor 3. The transmission gear ring 104 is arranged to be separable or engageable with the adjusting assembly 13. A plurality of pin rods are annularly arranged on one side of the locking plug 106 close to the second support assembly 2, and the pin rods can be inserted into the locking jack 23. In this way, when the telescopic length of the adjusting assembly 13 needs to be adjusted, the electromagnetic ring 102 is energized so that the side close to the permanent magnet ring 11 has the same magnetic pole as the side of the permanent magnet ring 11. Then, using the principle of like poles repelling each other, the transmission gear ring 104 moves to the bottom end of the adjusting assembly 13 and meshes with it, and the locking plug 106 is inserted into the locking jack 23 to lock the outer cylinder 4 to prohibit rotation. Then, the rotation of the inner transmission rod 101 driven by the driving motor 3 can completely drive the internal rotation of the adjusting assembly 13 to adjust its length. When the outer cylinder 4 needs to be rotated, the current introduced into the electromagnetic ring 102 is reversely conducted, so that the magnetic poles at both ends of the electromagnetic ring 102 are swapped. Then, the electromagnetic ring 102 is magnetically attracted to the permanent magnet ring 11. In this way, the rotation of the electromagnetic ring 102 can drive the rotation of the permanent magnet ring 11, and the locking plug 106 is also withdrawn from the locking jack 23. In this way, the outer cylinder 4 can be driven to rotate, and then the steel pipe can be bent.

[0056] Please refer to Figures 6-7 , a seamless steel elbow production device, including an inner limiting component 12. The inner limiting component 12 includes a central block 121. Limiting straight rods 122 are annularly installed on the central block 121, and a support leg 123 is fixedly installed on one side of the central block 121;

[0057] In this embodiment, it should be noted that the central block 121 is a polygonal structure and the number of sides of the polygon is the same as the number of the adjusting assemblies 13. The cross-section of the limiting straight rod 122 is rectangular. The end of the support leg 123 is fixedly connected to the inner surface of the outer cylinder 4. The adjusting assembly 13 is inserted on the limiting straight rod 122 and is movably arranged. In this way, the transmission gear ring 104 can drive the internal rotation of the adjusting assembly 13, and then under the limiting action of the limiting straight rod 122, the adjusting assembly 13 can be driven to linearly move on it to realize the adjustment of the length of the adjusting assembly 13.

[0058] Please refer to Figures 1-9 , a seamless steel elbow production device, including an adjusting assembly 13. The adjusting assembly 13 includes an outer straight cylinder 131. A driven gear 132 is fixedly installed at the bottom end of the outer straight cylinder 131. An inner screw rod 133 is threadedly connected inside the outer straight cylinder 131, and a limiting hole 134 is opened inside the inner screw rod 133;

[0059] In this embodiment, it should be noted that the outer straight cylinder 131 is rotatably embedded in the outer cylinder body 4. The bottom end of the inner screw rod 133 can be separated from the central block 121. The limiting hole 134 is movably arranged by being inserted into the limiting straight rod 122. The bottom end of the supporting end head 14 is detachably connected to the end of the inner screw rod 133. In this way, the rotation of the transmission gear ring 104 can drive the driven gear 132 to rotate, and further enable the internally threaded inner screw rod 133 to move up and down under the action of rotation, so as to realize the adjustment of the position of the supporting end head 14 and enable the device to meet the processing requirements of different bending radii.

[0060] The construction process of a seamless steel elbow production device is as follows:

[0061] S1. Heat the steel pipe by using an electromagnetic coil, and then use an external feeding mechanism to push the end of the steel pipe between the clamping bending head 9 and the supporting end head 14.

[0062] S2. Start the side limiting component 6 to lock the position of the vertically arranged clamping bending head 9, send the end of the steel pipe between the clamping bending head 9 and the supporting end head 14, adjust the length of the hydraulic long rod 91 to make the clamping head 93 clamp the steel pipe, and then turn on the power supply of the electromagnetic ring 102 to make it magnetically attracted to the permanent magnet ring 11.

[0063] S3. The driving motor 3 drives the internal transmission component 10 to drive the outer cylinder body 4 to rotate. The other clamping bending head 9 rotates synchronously with the outer cylinder body 4 under the locking action of the sliding seat 7 and the outer tooth ring 5. The external feeding structure continuously pushes the steel pipe towards the outer cylinder body 4. At the same time, the rotation of the outer cylinder body 4 clamps and rotates one end of the steel pipe to realize the bending of the steel pipe.

[0064] S4. Remove the bent steel pipe from the device for later use.

[0065] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seamless steel elbow production device, comprising a first support assembly (1) and a second support assembly (2), characterized in that: One side of the first support assembly (1) is fixedly installed with a second support assembly (2). The outer top end of the first support assembly (1) is fixedly installed with a driving motor (3). An outer cylinder (4) is movably installed between the first support assembly (1) and the second support assembly (2). One side of the outside of the outer cylinder (4) is fixedly installed with an outer gear ring (5). The top end of the second support assembly (2) is fixedly installed with a side limit assembly (6). A sliding seat (7) is movably installed on the outer gear ring (5). An inner locking assembly (8) is movably installed inside the sliding seat (7). A clamping folding head (9) is fixedly installed on the sliding seat (7). An inner transmission assembly (10) is fixedly installed on the output shaft of the driving motor (3). A permanent magnet ring (11) is fixedly installed inside the outer cylinder (4). An inner limit assembly (12) is fixedly installed inside the outer cylinder (4). An adjusting assembly (13) is movably installed on the inner limit assembly (12). A support end (14) is fixedly installed at the end of the adjusting assembly (13); The second support assembly (2) includes a support frame (21). A bearing groove (22) is formed on one side of the top end of the support frame (21). A locking jack (23) is formed on one side of the top end of the support frame (21); The side limit assembly (6) includes a vertical rod (61). One side of the top end of the vertical rod (61) is fixedly installed with an electric telescopic rod (62). A plug board (63) is fixedly installed at the end of the electric telescopic rod (62); The inner locking assembly (8) includes a straight board (81). One end of the straight board (81) is fixedly installed with an arc-shaped board (82). A locking plug (83) is fixedly installed at the bottom end of the arc-shaped board (82). A base block (84) is fixedly installed on the upper surface of the straight board (81). A spring (85) is fixedly installed on one side of the base block (84); The clamping folding head (9) includes a hydraulic long rod (91). The top end of the hydraulic long rod (91) is fixedly installed with a cross board (92). A clamping head (93) is installed at the bottom end of the cross board (92); The inner transmission assembly (10) includes an inner transmission rod (101). An electromagnetic ring (102) is fixedly installed on one side of the inner transmission rod (101). A circular plate (103) is fixedly installed at the end of the inner transmission rod (101). A transmission gear ring (104) is fixedly installed on one side of the circular plate (103). A central transmission rod (105) is fixedly installed in the middle of one side of the circular plate (103). A locking plug-in (106) is fixedly installed at the end of the central transmission rod (105); The inner limit assembly (12) includes a central block (121). Limit straight rods (122) are annularly installed on the central block (121). A support leg (123) is fixedly installed on one side of the central block (121); The adjusting component (13) includes an outer straight cylinder (131). A driven gear (132) is fixedly installed at the bottom end of the outer straight cylinder (131). An inner screw rod (133) is threadedly connected inside the outer straight cylinder (131). A limiting hole (134) is formed inside the inner screw rod (133).

2. The seamless steel elbow production device according to claim 1, characterized in that: The outer tooth ring (5) is arranged on the same side as the side limiting component (6). The tooth grooves on the outer tooth ring (5) are arranged on the side away from the side limiting component (6). The number of clamping bent heads (9) is two, and the bottom sliding seat (7) and the outer tooth ring (5) are controlled to be locked and unlocked through the inner locking component (8).

3. The seamless steel elbow production device according to claim 1, characterized in that: The bearing groove (22) is formed in a segmented manner. The inner diameter is larger on the side close to the outer cylinder body (4) and smaller on the other side. The two parts are communicated. The locking insertion holes (23) are annularly and densely formed on the outer side of the bearing groove (22). The top end of the first support component (1) has the same structure as the bearing groove (22). The two ends of the outer cylinder body (4) are respectively rotatably arranged in the bearing groove (22).

4. A seamless steel elbow production device according to claim 1, characterized in that: The bottom end of the vertical rod (61) is fixedly installed at the top end of the support frame (21). The insertion plate (63) can be inserted into the inner part of the sliding seat (7) for limit locking. The cross-section of the insertion plate (63) has the same shape and size as the end cross-section of the inner locking component (8).

5. A seamless steel elbow production device according to claim 1, characterized in that: The straight plate (81) is movably inserted into the inner part of the sliding seat (7). The locking insertion block (83) can be adaptively inserted into the outer tooth ring (5). The locking insertion block (83) is inserted into the outer tooth ring (5) under non-force conditions. One end outside the straight plate (81) is in an extended state when the locking insertion block (83) is inserted into the outer tooth ring (5), and can be in contact with the insertion plate (63).

6. A seamless steel elbow production device according to claim 1, characterized in that: The bottom end of the hydraulic long rod (91) is fixedly installed on the sliding seat (7). The number of clamping heads (93) is two. The clamping head (93) located in the vertical direction is rotatably arranged at the bottom end of the cross plate (92), and the other clamping head (93) is fixedly connected to the cross plate (92). The clamping head (93) is detachably installed and is provided with an arc-shaped groove structure adapted to the outer wall of the steel pipe on it.

7. The seamless steel elbow production device according to claim 1, characterized in that: The permanent magnet ring (11) is fixedly connected to the inside of the outer cylinder body (4) through an extension long rod. The electromagnetic ring (102) is arranged opposite to one side of the permanent magnet ring (11). The inner transmission rod (101) is of a telescopic structure, and the telescopic end is located inside the outer cylinder body (4), and the other end is fixedly connected to the output shaft of the driving motor (3). The transmission tooth ring (104) can be separated or engaged with the adjusting component (13). A plurality of pin rods are annularly arranged on one side of the locking plug-in (106) close to the second support component (2), and the pin rods can be inserted into the locking insertion holes (23).

8. A seamless steel elbow production device according to claim 1, characterized in that: The central block (121) is of a polygonal structure, and the number of sides of the polygon is the same as the number of adjusting components (13). The cross-section of the limiting straight rod (122) is rectangular. The end of the support leg (123) is fixedly connected to the inner surface of the outer cylinder body (4). The adjusting component (13) is inserted and movably arranged on the limiting straight rod (122).

9. The seamless steel elbow production device according to claim 1, characterized in that: The outer straight cylinder (131) is rotatably embedded and arranged inside the outer cylinder body (4). The bottom end of the inner screw rod (133) can be detachably arranged from the central block (121). The limiting hole (134) is movably arranged by being inserted on the limiting straight rod (122). The bottom end of the supporting end head (14) is detachably connected to the end of the inner screw rod (133).

10. A seamless steel elbow production device according to any one of claims 1-9, characterized in that, The specific steps of the using process are as follows: S1. Heat the steel pipe by using an electromagnetic coil, and then use an external feeding mechanism to push the end of the steel pipe between the clamping folding head (9) and the supporting end head (14). S2. Start the side limiting assembly (6) to lock the position of the vertically arranged clamping folding head (9), clamp the end of the steel pipe and send it between the clamping folding head (9) and the supporting end head (14), adjust the length of the hydraulic long rod (91) so that the clamping head (93) clamps the steel pipe, and then turn on the power supply of the electromagnetic ring (102) to make it magnetically attract the permanent magnet ring (11). S3. Drive the inner transmission assembly (10) by the driving motor (3) to drive the outer cylinder body (4) to rotate. The other clamping folding head (9) rotates synchronously with the outer cylinder body (4) under the locking action of the sliding seat (7) and the external gear ring (5). The external feeding structure continuously pushes the steel pipe towards the outer cylinder body (4). At the same time, the rotation of the outer cylinder body (4) clamps and rotates one end of the steel pipe to realize the bending of the steel pipe. S4. Take the bent steel pipe off the device for later use.

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