Support device for a pipe bending machine

Abstract

The application relates to the technical field of intelligent manufacturing, and discloses a supporting device for a pipeline bending machine, which comprises a base, a connecting column fixedly connected to the right side of the base, fixed arms fixedly connected to the top end and the bottom end of the connecting column, two rotating columns rotationally connected to the side wall of the connecting column, two rotating arms fixedly connected to the side wall of the two rotating columns, and a mold fixedly connected between the two rotating arms and sleeved on the connecting column. The repulsive force of the electromagnetic force of an electromagnet drives the second spring to elongate, and then drives the inner wall of the positioning column to be in close contact with the pipeline, so that the curvature of the pipeline remains constant during the bending and shaping process, and the efficiency of pipeline bending processing is significantly improved. Meanwhile, the uniform knocking on the pipeline bending area is realized through the cooperation between the limiting cylinder and the through hole, the stress of the bent and deformed pipeline is removed in time, and the problem of poor machining precision caused by internal stress during the pipeline bending process is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, specifically to a support device for a pipe bending machine. Background Technology

[0002] A pipe bending machine is a type of machinery used to bend and shape pipes. Its principle is to apply pressure to the sidewall of the pipe to deform it, thereby achieving the elongation and compression of the sidewall within the bending area to achieve the bending effect. It can bend various irregular pipes with different curvatures or regular pipes with the same curvature according to production needs.

[0003] Existing pipe bending machines have the following technical defects: First, during the pipe bending process, the plastic deformation of the stamping parts and the die results in a large force between them. To ensure a constant force on the pipe sidewall between the stamping parts and the die during installation and disassembly, this is very troublesome. Second, after the pipe is deformed by the force, the presence of metal stress means that the pipe always has internal stress that causes it to return to its initial position, resulting in poor bending effect, easy recovery, and inability to achieve the expected bending accuracy. Summary of the Invention

[0004] In view of the shortcomings of existing pipe bending machines mentioned in the background art, the present invention provides a support device for pipe bending machines, which has the advantages of convenient installation and disassembly and stress relief, thus solving the technical problems mentioned in the background art.

[0005] The present invention provides the following technical solution: a support device for a pipe bending machine, including a base, a connecting column fixedly connected to the right side of the base, a fixed arm fixedly connected to the top and bottom of the connecting column, and a positioning column provided between the fixed arms;

[0006] The side wall of the connecting column is rotatably connected to two rotating columns, the side walls of the two rotating columns are fixedly connected to two rotating arms, and a mold is fixedly connected between the two rotating arms. The mold is slidably sleeved on the connecting column.

[0007] A sleeve is fixedly connected vertically between the two rotating arms. A hydraulic rod slides inside the sleeve. A rotating sleeve is fixedly connected to the other end of the hydraulic rod. A hydraulic cylinder is fixedly connected to the other end of the rotating sleeve. A connecting rod is rotatably connected to the side wall of the rotating sleeve. The upper and lower ends of the connecting rod are fixedly connected to the side wall of the fixed arm. An electromagnetic positioning mechanism is provided inside the fixed arm. A sliding groove is opened on the side wall of the mold. A limiting component is fixedly connected to the side wall of the sliding groove. A stress-relieving mechanism is provided inside the limiting component.

[0008] Preferably, the electromagnetic positioning mechanism includes a slide rail formed on the side wall of the fixed arm, an electromagnet inside the slide rail and near the connecting rod, and a second spring fixedly connected to the side wall of the electromagnet.

[0009] The upper and lower side walls of the positioning column are equipped with permanent magnets of the same class as the electromagnet, and the other end of the second spring is fixedly connected to the permanent magnets.

[0010] Preferably, the stress relief mechanism includes a limiting post fixedly connected to the inner wall of the right side of the limiting member, and a limiting cylinder is fixedly connected to the side wall of the limiting post.

[0011] The limiting cylinder has a through hole inside, and a first spring is fixedly connected to the inner bottom wall of the through hole. A striking block is fixedly connected to the other end of the first spring.

[0012] Preferably, three limiting cylinders are evenly spaced along the circumference of the limiting post, and the striking block is made of elastic material.

[0013] Preferably, the arc length of the groove is one-third of the circumference of the mold.

[0014] Preferably, the length of the limiting cylinder is less than the distance between the side wall of the limiting post and the inner wall of the mold.

[0015] Preferably, the inner diameter of the sleeve is greater than the diameter of the hydraulic rod.

[0016] The present invention has the following beneficial effects:

[0017] 1. This invention uses the repulsive force of the electromagnetic force of an electromagnet to drive the second spring to extend, thereby causing the inner wall of the positioning column to make close contact with the pipe. This ensures that the clamping force of the pipe is stable during the bending process, thus maintaining a constant pipe curvature during the bending and shaping process. This eliminates the need for users to repeatedly install and disassemble the positioning mechanism, significantly improving the efficiency of pipe bending processing.

[0018] 2. This invention achieves the bending and plastic deformation of the pipe by rotating the mold and the rotating arm during the pipe bending process. At the same time, the pipe is slid along the inside of the limiting component and struck by the striking block. The combination of the limiting cylinder, the through hole and the first spring ensures uniform striking of the pipe bending area, which removes the stress of the bent and deformed pipe in time and significantly reduces the problem of poor processing accuracy caused by internal stress during the pipe bending process.

[0019] 3. This invention drives the rotating column and rotating arm to rotate synchronously by rotating the mold. The pipe is bent by the extrusion plasticity of the limiting component fixedly connected to the side wall of the chute. During the bending process, the extrusion force of the inner wall of the mold and the limiting component on the pipe through the stable rotation of the mold achieves the plastic bending effect, which significantly improves the accuracy of the pipe bending curvature.

[0020] 4. This invention uses the extension of a hydraulic rod to drive the rotating arm to rotate along the connecting column. Through stable hydraulic drive, the limiting component and the mold rotate synchronously, thereby achieving a constant extrusion pressure during the plastic deformation process of the tube and further improving bending accuracy. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a rear-view stereoscopic structural diagram of the present invention;

[0023] Figure 3 This is a side view of the structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure at point A in the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the electromagnetic positioning mechanism of the present invention.

[0026] In the diagram: 1. Base; 2. Connecting column; 3. Mold; 31. Slide groove; 4. Rotating column; 5. Limiting component; 6. Limiting column; 61. Limiting cylinder; 62. Through hole; 63. First spring; 7. Striking block; 8. Rotating arm; 9. Sleeve; 10. Fixed arm; 11. Positioning column; 12. Connecting rod; 13. Rotating sleeve; 14. Hydraulic cylinder; 15. Hydraulic rod; 16. Slide rail; 161. Electromagnet; 162. Second spring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-5 A support device for a pipe bending machine includes a base 1, a connecting column 2 fixedly connected to the right side of the base 1, a fixed arm 10 fixedly connected to the top and bottom of the connecting column 2, and a positioning column 11 provided between the fixed arms.

[0029] The side wall of the connecting column 2 is rotatably connected to two rotating columns 4, the side walls of the two rotating columns 4 are fixedly connected to two rotating arms 8, and a mold 3 is fixedly connected between the two rotating arms 8. The mold 3 is slidably sleeved on the connecting column 2.

[0030] A sleeve 9 is fixedly connected vertically between two rotating arms 8. A hydraulic rod 15 slides inside the sleeve 9. A rotating sleeve 13 is fixedly connected to the other end of the hydraulic rod 15. A hydraulic cylinder 14 is fixedly connected to the other end of the rotating sleeve 13. A connecting rod 12 is rotatably connected to the side wall of the rotating sleeve 13. The upper and lower ends of the connecting rod 12 are fixedly connected to the side wall of the fixed arm 10. An electromagnetic positioning mechanism is provided inside the fixed arm 10. A slide groove 31 is opened on the side wall of the mold 3. A limit member 5 is fixedly connected to the side wall of the slide groove 31. A stress-relieving mechanism is provided inside the limit member 5.

[0031] The electromagnetic positioning mechanism includes a slide rail 16 on the side wall of the fixed arm 10, an electromagnet 161 inside the slide rail 16 and near the connecting rod 12, and a second spring 162 fixedly connected to the side wall of the electromagnet 161; the upper and lower side walls of the positioning column 11 are provided with permanent magnets of the same level as the electromagnet 161, and the other end of the second spring 162 is fixedly connected to the permanent magnet. When electromagnet 161 is activated, the permanent magnets fixedly connected to the upper and lower ends of positioning post 11 are driven by the magnetic repulsion of the same magnetic field, causing positioning post 11 to move towards the inside of slide rail 16. This ensures that positioning post 11 and the inner wall of mold 3 are in close contact with the pipe to be bent, guaranteeing stable transmission of the bending plastic force. During this process, there is no need to correct or adjust the position of positioning post 11. The repulsive force of the electromagnetic force of electromagnet 161 causes the second spring 162 to extend, thereby causing the inner wall of positioning post 11 to be in close contact with the pipe. This ensures stable clamping force on the pipe during bending, thus maintaining a constant pipe curvature during the bending and shaping process. This eliminates the need for users to repeatedly install and disassemble the positioning mechanism, significantly improving the efficiency of pipe bending processing.

[0032] The stress relief mechanism includes a limiting post 6 fixedly connected to the inner wall of the right side of the limiting member 5, and a limiting cylinder 61 fixedly connected to the side wall of the limiting post 6;

[0033] The limiting cylinder 61 has a through hole 62 inside, and a first spring 63 is fixedly connected to the inner bottom wall of the through hole 62. The other end of the first spring 63 is fixedly connected to a striking block 7. During the bending process, the pipe slides out of the mold 3 along the right side of the limiting member 5. As the pipe runs along the inner wall of the limiting member 5, it comes into contact with the striking block 7 set inside the limiting member 5. The force between the pipe and the striking block 7 causes the limiting cylinder 61, which is fixedly connected to the side wall of the limiting post 6, to rotate. During the rotation, the striking block 7 is subjected to pressure and slides into the through hole 62, further squeezing the first spring 63 so that the striking block 7 strikes the side wall of the pipe. With the continuous movement of the pipe, the internal stress of the bent pipe is removed in time through the striking vibration. The bending and plasticity of the pipe is achieved by the rotation of the mold 3 and the rotating arm 8 during the pipe bending process. At the same time, the pipe is slid along the inside of the limiting member 5 and struck by the striking block 7. The uniform striking of the pipe bending area is achieved by the cooperation between the limiting cylinder 61, the through hole 62 and the first spring 63. The stress of the bent and deformed pipe is removed in time, which significantly reduces the problem of poor processing accuracy caused by internal stress during the pipe bending process.

[0034] Three limiting cylinders 61 are evenly spaced along the circumference of the limiting post 6, and the striking blocks 7 are made of elastic material. This ensures that the striking rate of the striking blocks 7 is the same as that of the pipe body, guarantees that the amplitude of the vibration striking stress relief is the same, and improves the stress relief effect.

[0035] The arc length of the groove 31 is one-third of the circumference of the mold 3. This facilitates the removal of the pipe after processing. However, if the opening of the groove 31 is too large, the contact area for the bending force will be reduced, which may lead to bending failure.

[0036] The length of the limiting cylinder 61 is less than the distance between the side wall of the limiting post 6 and the inner wall of the mold 3. This ensures that the pipeline will not contact the limiting post 6 during operation, while achieving contact and collision with the striking block 7.

[0037] The inner diameter of sleeve 9 is greater than the diameter of hydraulic rod 15. This ensures that hydraulic rod 15 can slide along the inside of sleeve 9, enabling hydraulic rod 14 to drive the rotation of sleeve 9 and rotating arm 8.

[0038] The method of using (working principle) of this invention is as follows:

[0039] Initially, the pipe to be bent is placed in the groove between the positioning post 11 and the mold 3. Then, the electromagnet 161 is turned on. Under the magnetic force of the electromagnet 161, the permanent magnets fixedly connected to the upper and lower ends of the positioning post 11 are driven by the magnetic repulsion force of the same magnetic field, causing the positioning post 11 to move towards the inside of the slide rail 16. This makes the positioning post 11 and the inner wall of the mold 3 in close contact with the pipe to be bent, ensuring that the bending plastic force is stably transmitted. During this process, there is no need to correct or adjust the position of the positioning post 11. The stable clamping and positioning of the pipe is achieved by electromagnetic drive, resulting in good positioning effect and high bending efficiency.

[0040] After positioning is completed, hydraulic cylinder 14 is activated, which in turn causes hydraulic rod 15 to extend. As hydraulic rod 15 extends, rotating sleeve 13 rotates along connecting rod 12. At the same time, hydraulic rod 15 drives sleeve 9, which is sleeved on the outside of hydraulic rod 15, to move, which in turn drives rotating arm 8 to rotate along connecting column 2. This, in turn, drives mold 3 and limiting member 5 on the right side to rotate slowly. The force generated by the rotation of the inner wall of mold 3 and limiting member 5 driven by hydraulic rod 15 achieves bending of the pipe.

[0041] During the bending process, the pipe slides out of the mold 3 along the right side of the limiting member 5. As the pipe runs along the inner wall of the limiting member 5, it contacts the striking block 7 located inside the limiting member 5. The force between the pipe and the striking block 7 causes the limiting cylinder 61, which is fixedly connected to the side wall of the limiting post 6, to rotate. During the rotation, the striking block 7 is subjected to pressure and slides into the through hole 62, further compressing the first spring 63, causing the striking block 7 to strike the side wall of the pipe. With the continuous movement of the pipe, the internal stress of the bent pipe is removed in time through the striking vibration. After the bending is completed, the hydraulic mechanism and the electromagnet 161 are closed. At this time, the previously stretched second spring 162 returns to its initial position, which facilitates the timely disassembly of the processed pipe.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support device for a pipe bending machine, comprising a base (1), characterized in that: A connecting column (2) is fixedly connected to the right side of the base (1), and a fixing arm (10) is fixedly connected to both the top and bottom of the connecting column (2), and a positioning column (11) is provided between the fixing arms (10). The side wall of the connecting column (2) is rotatably connected to two rotating columns (4), and the side walls of the two rotating columns (4) are fixedly connected to two rotating arms (8). A mold (3) is fixedly connected between the two rotating arms (8), and the mold (3) is slidably sleeved on the connecting column (2). A sleeve (9) is fixedly connected vertically between the two rotating arms (8). A hydraulic rod (15) slides inside the sleeve (9). A rotating sleeve (13) is fixedly connected to the other end of the hydraulic rod (15). A hydraulic cylinder (14) is fixedly connected to the other end of the rotating sleeve (13). A connecting rod (12) is rotatably connected to the side wall of the rotating sleeve (13). The upper and lower ends of the connecting rod (12) are fixedly connected to the side wall of the fixed arm (10). An electromagnetic positioning mechanism is provided inside the fixed arm (10). A sliding groove (31) is opened on the side wall of the mold (3). A limiting member (5) is fixedly connected to the side wall of the sliding groove (31). A stress-relieving mechanism is provided inside the limiting member (5). The electromagnetic positioning mechanism includes a slide rail (16) opened on the side wall of the fixed arm (10), an electromagnet (161) inside the slide rail (16) and close to the side of the connecting rod (12), and a second spring (162) fixedly connected to the side wall of the electromagnet (161). The upper and lower side walls of the positioning post (11) are provided with permanent magnets of the same level as the electromagnet (161), and the other end of the second spring (162) is fixedly connected to the permanent magnet. The stress relief mechanism includes a limiting post (6) fixedly connected to the inner wall of the right side of the limiting member (5), and a limiting cylinder (61) is fixedly connected to the side wall of the limiting post (6). The limiting cylinder (61) has a through hole (62) inside, and a first spring (63) is fixedly connected to the inner bottom wall of the through hole (62). A striking block (7) is fixedly connected to the other end of the first spring (63).

2. The support device for a pipe bending machine according to claim 1, characterized in that: The limiting cylinder (61) is provided in three equal intervals along the circumference of the limiting post (6), and the striking block (7) is made of elastic material.

3. The support device for a pipe bending machine according to claim 1, characterized in that: The arc length of the groove (31) is one-third of the circumference of the mold (3).

4. The support device for a pipe bending machine according to claim 1, characterized in that: The length of the limiting cylinder (61) is less than the distance between the side wall of the limiting post (6) and the inner wall of the mold (3).

5. A support device for a pipe bending machine according to claim 1, characterized in that: The inner diameter of the sleeve (9) is greater than the diameter of the hydraulic rod (15).

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