Novel elbow tube inner supporting mandrel

Abstract

This utility model provides a novel internal support mandrel for pipe bending, comprising: a mandrel body; an inner support core disposed on the inner side of the mandrel body; a connecting bolt disposed at one end of the inner support core; a through-bead threadedly connected to the outer side of one end of the connecting bolt; a spring disposed at the other end of the inner support core; and a screw threadedly connected to the inner side of the mandrel body. This novel internal support mandrel for pipe bending allows for adjustment of the position of the inner support core by rotating the through-bead, thereby changing the compression of the spring and flexibly adjusting the magnitude of the supporting force. In this way, the internal support mandrel can provide appropriate supporting force according to the needs of pipes with different diameters and bending angles, improving the accuracy of pipe bending.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a novel internal support mandrel for bent pipes. Background Technology

[0002] In the field of pipe processing, pipe bending is a common process. In the traditional pipe bending process, the pipe is subjected to external pressure and internal stress when bent, which can easily cause problems such as pipe wall collapse, wrinkles, and excessive ovality. These problems can seriously affect the quality and performance of the bent pipe.

[0003] To avoid such situations, existing technologies generally use internal support mandrels to support the inside of the pipe. However, traditional internal support mandrels have many shortcomings. On the one hand, their structural design is difficult to adapt to pipes of different diameters or bending angles, resulting in uneven distribution of support force and thus lower bending accuracy. On the other hand, the connection structure of traditional mandrels is relatively complex, and disassembly and assembly are not only time-consuming but also labor-intensive, which is very detrimental to improving processing efficiency. In addition, traditional mandrels cannot flexibly adjust the support force according to actual processing needs, making it difficult to meet the diverse bending process requirements.

[0004] Therefore, it is necessary to provide a new type of internal support mandrel for bent pipes to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a novel internal support mandrel for bent pipes, which solves the problems of traditional internal support mandrel structure design being difficult to adapt to pipes of different diameters or bending angles, complex connection structure that is time-consuming and laborious to disassemble and assemble, and inability to flexibly adjust the support force according to actual processing needs.

[0006] To solve the above-mentioned technical problems, this utility model provides a novel internal support mandrel for bent pipes, comprising:

[0007] The shaft;

[0008] An inner support core is disposed on the inner side of the rod body;

[0009] A connecting bolt, wherein the connecting bolt is disposed at one end of the inner support core;

[0010] A through-bead, wherein the through-bead is threaded onto the outer side of one end of the connecting bolt;

[0011] A spring, which is disposed at the other end of the inner support core;

[0012] A screw, which is threaded onto the inner side of the rod body.

[0013] Preferably, the outer side of the inner support core is attached to the inner side of the rod body, and the other end of the connecting bolt is rotatably connected to the inner side of the rod body.

[0014] Preferably, one end of the inner support core and the other end of the connecting bolt abut against each other, and the through-bead is disposed at one end of the rod body.

[0015] Preferably, the spring is positioned between the screw and the inner support.

[0016] Preferably, the novel curved tube inner support mandrel further includes multiple oil outlet holes, all of which are opened on the side of the mandrel body and communicate with the interior of the mandrel body.

[0017] Preferably, a sealing plug is fixedly installed at one end of the screw, the outer side of the sealing plug is in contact with the inner side of the rod body, and a piston plate is fixedly installed at the other end of the inner support core, the outer side of the piston plate is in contact with the inner side of the rod body.

[0018] Preferably, a filter screen is fixedly installed on the inner side of the oil outlet.

[0019] Compared with related technologies, the novel internal support mandrel for bent pipes provided by this utility model has the following beneficial effects:

[0020] This utility model provides a novel inner support mandrel for pipe bending. By rotating the mandrel ball, the connecting bolt is rotated, thereby adjusting the position of the inner support mandrel, changing the compression of the spring, and thus flexibly adjusting the magnitude of the support force. In this way, the inner support mandrel can provide appropriate support force according to the pipe material requirements of different pipe diameters and bending angles, thereby improving the pipe bending forming accuracy.

[0021] During disassembly and assembly, only the through-bead and a few screws need to be operated, without complicated steps, which greatly shortens the disassembly and assembly time, improves processing efficiency, and overcomes the shortcomings of traditional mandrel connection structure which is complicated and time-consuming and labor-intensive to disassemble and assemble.

[0022] By precisely adjusting the spring compression by rotating a screw, the supporting force can be flexibly changed to meet diverse pipe bending process requirements, making pipe bending processing more flexible and efficient. Attached Figure Description

[0023] Figure 1 A schematic diagram of the first embodiment of a novel internal support mandrel for a bent pipe provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structure during operation.

[0025] Figure 3A schematic diagram of the second embodiment of a novel internal support mandrel for a bent pipe provided by this utility model;

[0026] Figure 4 for Figure 1 The diagram shows a cross-sectional structure.

[0027] Figure 5 for Figure 4 The enlarged schematic diagram of part A is shown.

[0028] The following are the components labeled in the diagram: 1. Rod body, 2. Inner support core, 3. Connecting bolt, 4. Through-hole bead, 5. Spring, 6. Screw, 7. Sealing plug, 8. Piston plate, 9. Oil outlet, 10. Filter screen. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] First Embodiment

[0031] Please refer to the following: Figure 1 , Figure 2 ,in, Figure 1 A schematic diagram of the first embodiment of a novel internal support mandrel for a bent pipe provided by this utility model; Figure 2 for Figure 1 The diagram shows the working structure. A novel internal support mandrel for bent pipes includes: a mandrel body 1;

[0032] Inner support core 2, the inner support core 2 is disposed on the inner side of the rod body 1;

[0033] Connecting bolt 3, wherein the connecting bolt 3 is disposed at one end of the inner support core 2;

[0034] A through-bead 4 is threaded onto the outer side of one end of the connecting bolt 3;

[0035] Spring 5, which is disposed at the other end of the inner support core 2;

[0036] The screw 6 is threaded onto the inner side of the rod body 1.

[0037] The outer side of the inner support core 2 is attached to the inner side of the rod body 1, and the other end of the connecting bolt 3 is rotatably connected to the inner side of the rod body 1.

[0038] One end of the inner support core 2 and the other end of the connecting bolt 3 abut against each other, and the through bead 4 is disposed at one end of the rod body 1.

[0039] The spring 5 is positioned between the screw 6 and the inner support core 2.

[0040] The connecting bolt 3 rotates at one end on the inner side of the rod body 1. It is round, which allows the connecting bolt 3 to rotate easily on the inner side of the rod body 1 during use.

[0041] When the connecting bolt 3 rotates, it can push the inner support core 2 to move. When the inner support core 2 moves, it will simultaneously push the spring 5 to compress.

[0042] The working principle of the novel internal support mandrel for bent pipe provided by this utility model is as follows:

[0043] Installation preparation: Before bending the pipe, first install the through bead 4 on one end of the connecting bolt 3, so that the through bead 4 is located at one end of the rod body 1. At this time, the inner support 2 is attached to the inner side of the rod body 1, and the other end of the connecting bolt 3 is rotatably connected to the inner side of the rod body 1. One end of the inner support 2 and the other end of the connecting bolt 3 abut against each other, and the spring 5 is in the initial state between the screw 6 and the inner support 2.

[0044] Inserting into the pipe: Align one end of the rod 1 with the through-bead 4 installed with the pipe inlet, and slowly insert the rod 1 into the pipe.

[0045] Adjusting the support force: By rotating the through bead 4, since the through bead 4 is threadedly connected to the connecting bolt 3, rotating the through bead 4 will drive the connecting bolt 3 to rotate. When the connecting bolt 3 rotates, the end that abuts against the inner support core 2 will push the inner support core 2 to move on the inner side of the rod body 1.

[0046] Support force formation: The movement of the inner support core 2 will compress the spring 5. The elastic force generated by the spring 5 acts on the inner support core 2, thereby causing the inner support core 2 to press against the inner side of the rod body 1. The support force is transmitted to the inner wall of the pipe through the rod body 1, thus supporting the pipe.

[0047] Pipe bending process: During the pipe bending process, the support provided by the rod body 1 and the inner support core 2 can prevent the pipe from collapsing, wrinkling and excessive ovality, thus ensuring the quality of pipe bending.

[0048] Compared with related technologies, the novel internal support mandrel for bent pipes provided by this utility model has the following beneficial effects:

[0049] By rotating the mandrel 4, the connecting bolt 3 is rotated, thereby adjusting the position of the inner support core 2, changing the compression of the spring 5, and thus flexibly adjusting the magnitude of the support force. In this way, the inner support core can provide appropriate support force according to the pipe material requirements of different pipe diameters and bending angles, thereby improving the pipe bending forming accuracy.

[0050] During disassembly and assembly, only the through-bead 4 and the screw 6 need to be operated, without complicated steps, which greatly shortens the disassembly and assembly time, improves the processing efficiency, and overcomes the shortcomings of traditional mandrel connection structure which is complicated and time-consuming and labor-intensive to disassemble and assemble.

[0051] By rotating the screw 6, the compression of the spring 5 can be precisely adjusted, thereby flexibly changing the magnitude of the support force to meet diverse pipe bending process requirements, making pipe bending processing more flexible and efficient.

[0052] Second Embodiment

[0053] Please refer to the following: Figure 3 , Figure 4 and Figure 5 Based on the novel internal support mandrel for bent pipes provided in the first embodiment of this application, the second embodiment of this application proposes another novel internal support mandrel for bent pipes. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0054] Specifically, the second embodiment of this application provides a novel internal support mandrel for bent pipes that is different in that the novel internal support mandrel for bent pipes also includes a plurality of oil outlet holes 9, all of which are opened on the side of the mandrel body 1 and communicate with the interior of the mandrel body 1.

[0055] A sealing plug 7 is fixedly installed at one end of the screw 6, and the outer side of the sealing plug 7 is in contact with the inner side of the rod body 1. A piston plate 8 is fixedly installed at the other end of the inner support core 2, and the outer side of the piston plate 8 is in contact with the inner side of the rod body 1.

[0056] A filter screen 10 is fixedly installed on the inner side of the oil outlet 9.

[0057] Before use, the user can first turn the screw 6 to remove the screw 6 from the inside of the rod body 1. Then, when it is needed, add lubricating oil to the inside of the rod body 1. Then the user can thread the screw 6 back onto the inside of the rod body 1 so that the sealing plug 8 seals the lubricating oil and prevents the lubricating oil from leaking.

[0058] By setting up the filter screen 10, external impurities can be prevented from entering the inner side of the rod body 1 through the oil outlet 9 during use, thereby avoiding clogging of the oil outlet 9.

[0059] The working principle of the novel internal support mandrel for bent pipe provided by this utility model is as follows:

[0060] When it is necessary to insert the rod 1 into the inner side of the pipe, the user can first place the end with the mandrel 4 downwards, so that the lubricating oil on the inner side of the rod 1 flows to the side of the oil outlet 9. Then, the operator bends the mandrel 4, which drives the connecting bolt 3 to rotate. When the connecting bolt 3 rotates, it pushes the inner support 2 to move on the inner side of the rod 1. When the inner support 2 moves, it pushes the piston plate 8 to move on the inner side of the rod 1, thereby squeezing the lubricating oil on the inner side of the rod 1, so that the lubricating oil flows out from the inner side of the oil outlet 9. Then, the user applies the flowing lubricating oil to the outer side of the rod 1 to lubricate the outer side of the rod 1, so that the rod 1 can be inserted into the inner side of the pipe.

[0061] Compared with related technologies, the novel internal support mandrel for bent pipes provided by this utility model has the following beneficial effects:

[0062] The sealing plug 7, piston plate 8, oil outlet hole 9 and filter screen 10 work together to allow lubricating oil to flow out from the inner side of the oil outlet hole 9 during use. This makes it easy for the user to apply the lubricating oil to the outer side of the rod body 1, thus facilitating the user to insert the rod 1 into the inner side of the tube.

[0063] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A novel internal support mandrel for bent pipes, characterized in that, include: The shaft; An inner support core is disposed on the inner side of the rod body; A connecting bolt, wherein the connecting bolt is disposed at one end of the inner support core; A through-bead, wherein the through-bead is threaded onto the outer side of one end of the connecting bolt; A spring, which is disposed at the other end of the inner support core; A screw, which is threaded onto the inner side of the rod body.

2. The novel internal support mandrel for bent pipes according to claim 1, characterized in that, The outer side of the inner support core is attached to the inner side of the rod body, and the other end of the connecting bolt is rotatably connected to the inner side of the rod body.

3. The novel internal support mandrel for bent pipes according to claim 2, characterized in that, One end of the inner support core and the other end of the connecting bolt abut against each other, and the through bead is disposed at one end of the rod body.

4. The novel internal support mandrel for bent pipes according to claim 1, characterized in that, The spring is positioned between the screw and the inner support.

5. A novel internal support mandrel for bent pipes according to claim 1, characterized in that, It also includes multiple oil outlet holes, all of which are located on the side of the rod body and communicate with the interior of the rod body.

6. A novel internal support mandrel for bent pipes according to claim 5, characterized in that, A sealing plug is fixedly installed at one end of the screw, and the outer side of the sealing plug is in contact with the inner side of the rod body. A piston plate is fixedly installed at the other end of the inner support core, and the outer side of the piston plate is in contact with the inner side of the rod body.

7. A novel internal support mandrel for bent pipes according to claim 6, characterized in that, A filter screen is fixedly installed on the inner side of the oil outlet.

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