Hydraulic pipe bending machine

Abstract

The utility model discloses a hydraulic pipe bender which comprises a pipe bending mechanism and a positioning mechanism, the pipe bending mechanism comprises a platform, the platform is rotatably connected with a semicircular block, the platform is slidably connected with a circular block with the center of the semicircular block as the circle center, and the semicircular block and the circular block are provided with semicircular grooves used for containing metal pipes. The platform is provided with a power assembly used for driving the circular block to move. The positioning mechanism comprises a positioning plate which is arranged on the platform and used for abutting against the end of the metal pipe, a positioning block is arranged on the positioning plate, and a positioning groove which is used for abutting against the side wall of the metal pipe is formed in the positioning block. The position of the metal pipe can be accurately determined, and due to the fact that the initial position and direction of the metal pipe can be accurately controlled, bent pipe products produced in batches have high consistency, the rejection rate is reduced, and the machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of pipe benders, and particularly relates to a hydraulic pipe bender. Background Art

[0002] A pipe bender refers to a machine used for bending pipes and can also be used as a jack. It is roughly divided into numerical control pipe benders, hydraulic pipe benders, etc., and is applied to pipeline laying and repair in aspects such as electric power construction, highway and railway construction, bridges, ships, etc.

[0003] In the related art, a single-head hydraulic pipe bender is proposed, which includes a hydraulic platform and a metal pipe. The head end of the first hydraulic cylinder in the hydraulic platform rotates horizontally around a point on the rectangular platform in the hydraulic platform. A pipe bending device is installed on the hydraulic platform. The pipe bending device is composed of mutually contacting umbrella-shaped large and small semi-circular block groups and a circular block. The metal pipe is arranged between the circular block and the umbrella-shaped large and small semi-circular block groups. The first hydraulic cylinder is connected to the circular block. When the end of the first hydraulic cylinder extends, it will drive the circular block to make an arc movement around the center of the umbrella-shaped large and small semi-circular block groups to squeeze the metal pipe to bend uniformly along the second semi-circular groove.

[0004] Aiming at the above-mentioned related art, there are the following defects: After the metal pipe is placed in the pipe groove, the part located in the pipe bending device is difficult to control. Therefore, the bending part on the metal pipe is also difficult to control, affecting the processing quality. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a hydraulic pipe bender to solve the technical problem that the bending positions on the metal pipe in the prior art are difficult to keep consistent.

[0006] To achieve the above technical purpose, the technical solution of the utility model provides a hydraulic pipe bender, which includes a pipe bending mechanism. The pipe bending mechanism includes a platform. A semi-circular block is rotatably connected to the platform. A circular block is slidably connected to the platform with the center of the semi-circular block as the center of the circle. Semi-circular grooves for accommodating the metal pipe are provided on the semi-circular block and the circular block. A power component for driving the circular block to move is provided on the platform; and,

[0007] A positioning mechanism, the positioning mechanism includes a positioning plate provided on the platform for abutting against the end of the metal pipe. A positioning block is provided on the positioning plate. A positioning groove for abutting against the side wall of the metal pipe is provided on the positioning block.

[0008] In some embodiments, the positioning plate is slidably connected to the platform along the length direction of the metal pipe. A fixing component for fixing the positioning plate is provided on the platform.

[0009] In some embodiments, the fixing component includes a jack provided on the positioning plate, a plug rod is inserted into the jack, and a plurality of slots for accommodating the plug rod are provided on the platform at intervals along the sliding direction of the positioning plate.

[0010] In some embodiments, a spring is sleeved on the plug rod, one end of the spring is connected to the plug rod, the other end of the spring is connected to the positioning plate, the spring is in a stretched state, and the spring causes the plug rod to have a tendency to slide towards the platform.

[0011] In some embodiments, the end of the plug rod is spherical.

[0012] In some embodiments, a handle is provided on the plug rod.

[0013] In some embodiments, a clamping plate is slidably connected to the positioning plate, a clamping groove is provided on the clamping plate, the clamping groove is used to abut against the side wall of the metal pipe, and a driving component for driving the clamping plate to slide is provided on the positioning plate.

[0014] In some embodiments, the driving component includes a first hydraulic cylinder provided on the positioning plate, and the piston rod of the first hydraulic cylinder is connected to the clamping plate.

[0015] In some embodiments, elastic layers are provided on the inner walls of the positioning groove and the clamping groove.

[0016] In some embodiments, the power component includes a second hydraulic cylinder rotatably connected to the platform, and the piston rod of the second hydraulic cylinder is rotatably connected to the round block.

[0017] Compared with the prior art, the beneficial effects of the present utility model include: through the positioning plate and the positioning block of the positioning mechanism, the position of the metal pipe can be accurately determined. Since the starting position and direction of the metal pipe can be accurately controlled, the bent pipe products produced in batches have high consistency, reduce the rejection rate, and improve the processing quality. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the hydraulic pipe bender provided by the present utility model;

[0019] Figure 2 is the overall structural schematic diagram of the positioning mechanism provided by the present utility model.

[0020] Explanation of the Reference Numerals

[0021] 1. Bend pipe mechanism; 11. Platform; 12. Semi-circular block; 13. Circular block; 14. Power assembly; 15. Semi-circular groove; 141. Second hydraulic cylinder; 2. Positioning mechanism; 21. Positioning plate; 22. Positioning block; 23. Positioning groove; 3. Fixing assembly; 31. Jack; 32. Plug rod; 33. Slot; 34. Spring; 35. Handle; 4. Clamping plate; 41. Clamping groove; 42. Driving assembly; 421. First hydraulic cylinder; 5. Elastic layer. Detailed implementation

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] The present utility model provides a hydraulic pipe bender, the structure of which is as Figure 1 - Figure 2 shown, including a bend pipe mechanism 1 and a positioning mechanism 2.

[0024] The bend pipe mechanism 1 includes a platform 11, a semi-circular block 12 is rotatably connected to the platform 11, a circular block 13 is slidably connected to the platform 11 with the center of the semi-circular block 12 as the center of the circle, a semi-circular groove 15 for accommodating a metal pipe is provided on the semi-circular block 12 and the circular block 13, and a power assembly 14 for driving the circular block 13 to move is provided on the platform 11.

[0025] The positioning mechanism 2 includes a positioning plate 21 provided on the platform 11 for abutting against the end of the metal pipe, a positioning block 22 is provided on the positioning plate 21, and a positioning groove 23 for abutting against the side wall of the metal pipe is provided on the positioning block 22.

[0026] During use, the metal pipe to be bent is placed on the platform 11, one end of which is close to the positioning plate 21, the positioning plate 21 abuts against the end of the metal pipe, providing a definite starting position for the metal pipe, and the positioning groove 23 on the positioning block 22 contacts the side wall of the metal pipe. The inner wall shape of the positioning groove 23 matches the side wall of the metal pipe, further restricting the lateral movement of the metal pipe. The power assembly 14 is started, and the power assembly 14 drives the circular block 13 to move towards the semi-circular block 12. As the circular block 13 moves, the metal pipe is placed between the semi-circular block 12 and the circular block 13. The circular block 13 gradually approaches the semi-circular block 12, applying pressure to the metal pipe, causing the metal pipe to bend around the arc surface of the semi-circular block 12, thereby realizing the pipe bending operation.

[0027] In this utility model, through the positioning plate 21 and positioning block 22 of the positioning mechanism 2, the position of the metal pipe can be accurately determined. Since the starting position and direction of the metal pipe can be accurately controlled, the bent pipe products produced in batches have high consistency, reducing the scrap rate and improving the processing quality.

[0028] To improve the scope of application, please refer to Figure 1 , in a preferred embodiment, the positioning plate 21 is slidably connected to the platform 11 along the length direction of the metal pipe, and a fixing component 3 for fixing the positioning plate 21 is provided on the platform 11.

[0029] When in use, when it is necessary to perform bending operations on metal pipes of different lengths or different positions on the metal pipe, manually push the positioning plate 21 to slide along the length direction of the metal pipe on the platform 11. After the positioning plate 21 is adjusted to the appropriate position, start the fixing component 3 to ensure that the positioning plate 21 does not move during the bending process and maintain the stable positioning of the metal pipe.

[0030] To fix the positioning plate 21, please refer to Figure 2 , in a preferred embodiment, the fixing component 3 includes a jack 31 provided on the positioning plate 21, an insertion rod 32 is inserted through the jack 31, and a plurality of slots 33 for accommodating the insertion rod 32 are provided on the platform 11 at intervals along the sliding direction of the positioning plate 21.

[0031] When in use, when the positioning plate 21 is not fixed, the positioning plate 21 can freely slide along the length direction of the metal pipe on the platform 11. After sliding the positioning plate 21 to the predetermined position, insert the insertion rod 32 into the selected slot 33 from the jack 31 on the positioning plate 21. After the insertion rod 32 is inserted into the slot 33, the positioning plate 21 is fixed at this position.

[0032] To improve the stability of the fixing of the insertion rod 32, please refer to Figure 2 , in a preferred embodiment, a spring 34 is sleeved on the insertion rod 32. One end of the spring 34 is connected to the insertion rod 32, and the other end of the spring 34 is connected to the positioning plate 21. The spring 34 is in a stretched state, and the spring 34 causes the insertion rod 32 to have a tendency to slide in the direction close to the platform 11.

[0033] When in use, before sliding the positioning plate 21, pull up the insertion rod 32. At this time, the spring 34 is in a stretched state. After sliding the positioning plate 21 to the predetermined position, release the insertion rod 32. Under the action of the restoring force of the spring 34, the insertion rod 32 rebounds into the jack 31 and the corresponding slot 33, and the positioning plate 21 is fixed.

[0034] To make the insertion rod 32 more easily slide into the slot 33, please refer to Figure 2, in a preferred embodiment, the end of the insertion rod 32 is spherical.

[0035] During use, the spherical end has a large contact area and a smooth surface. Even if there is a certain error during the position adjustment of the positioning plate 21, the spherical end can, under the pulling force of the spring 34, slide into the slot 33 more easily through its own rolling and adjustment.

[0036] To improve the convenience of operation, please refer to Figure 2 , in a preferred embodiment, a handle 35 is provided on the insertion rod 32.

[0037] During use, the design of the handle 35 enables the staff to hold and operate the insertion rod 32 more conveniently, thereby improving work efficiency and the comfort of operation.

[0038] To reduce the possibility of the metal tube sliding and offsetting during the bending process, please refer to Figure 2 , in a preferred embodiment, a clamping plate 4 is slidably connected to the positioning plate 21. A clamping groove 41 is provided on the clamping plate 4. The clamping groove 41 is used to abut against the side wall of the metal tube. A driving assembly 42 for driving the clamping plate 4 to slide is provided on the positioning plate 21.

[0039] During use, place the metal tube to be bent near the positioning plate 21, with one end close to the positioning plate 21, and the length direction of the metal tube is substantially parallel to the sliding direction of the positioning plate 21. One side of the metal tube abuts in the positioning groove 23. When it is necessary to position and clamp the metal tube, start the driving assembly 42. The driving assembly 42 generates power and pushes the clamping plate 4 to slide on the positioning plate 21. As the clamping plate 4 slides, the clamping groove 41 on the clamping plate 4 gradually approaches the side wall of the metal tube. When the clamping groove 41 contacts the side wall of the metal tube, the continuously sliding clamping plate 4 will exert a certain pressure on the metal tube, so that the clamping groove 41 tightly abuts against the side wall of the metal tube. The shape design of the clamping groove 41 matches the side wall of the metal tube, which can better fit the metal tube and increase the stability of clamping.

[0040] To drive the clamping plate 4 to move, please refer to Figure 2 , in a preferred embodiment, the driving assembly 42 includes a first hydraulic cylinder 421 provided on the positioning plate 21, and the piston rod of the first hydraulic cylinder 421 is connected to the clamping plate 4.

[0041] During use, when the pipe bending operation is not carried out, the first hydraulic cylinder 421 is in an unstarted state, its piston rod is in the retracted position, and the clamping plate 4 does not contact the metal pipe. When it is necessary to clamp the metal pipe, the first hydraulic cylinder 421 starts to work, pushing the piston rod to extend outwards. Since the piston rod of the first hydraulic cylinder 421 is connected to the clamping plate 4, as the piston rod extends, the clamping plate 4 slides on the positioning plate 21 towards the metal pipe. When the clamping groove 41 contacts the side wall of the metal pipe, the continuously extending piston rod will cause the clamping plate 4 to apply a certain pressure to the metal pipe, and the metal pipe is fixed.

[0042] To improve the stability of the metal pipe, please refer to Figure 2 , in a preferred embodiment, elastic layers 5 are provided on the inner walls of the positioning groove 23 and the clamping groove 41.

[0043] During use, when contacting the metal pipe, the elastic layer can increase the friction force between the side wall of the metal pipe, making the metal pipe more stable in the positioning groove 23 and the clamping groove 41, not prone to sliding or displacement, and ensuring the accurate position of the metal pipe during the pipe bending process.

[0044] To drive the circular block 13 to move, please refer to Figure 1 , in a preferred embodiment, the power assembly 14 includes a second hydraulic cylinder 141 rotatably connected to the platform 11, and the piston rod of the second hydraulic cylinder 141 is rotatably connected to the circular block 13.

[0045] During use, when preparing to carry out the pipe bending operation, the second hydraulic cylinder 141 starts to work, pushing the piston rod to extend. Since the piston rod of the second hydraulic cylinder 141 is rotatably connected to the circular block 13, and the second hydraulic cylinder 141 itself is rotatably connected to the platform 11, as the piston rod extends, the piston rod will push the circular block 13 to move along the circumference of the semi-circular block 12, and the circular block 13 applies pressure to the metal pipe during the movement to complete the pipe bending operation.

[0046] To better understand the present invention, the following is combined with Figure 1 - Figure 2The working principle of the technical solution of a hydraulic pipe bender of the present utility model will be described in detail: Place the metal pipe to be bent on the platform 11, with one end thereof close to the positioning plate 21. The positioning plate 21 abuts against the end of the metal pipe, providing a definite starting position for the metal pipe. The positioning groove 23 on the positioning block 22 contacts the side wall of the metal pipe. The inner wall shape of the positioning groove 23 matches the side wall of the metal pipe, further restricting the lateral movement of the metal pipe. The power assembly 14 is started, and the power assembly 14 drives the round block 13 to move towards the semi-circular block 12. As the round block 13 moves, the metal pipe is placed between the semi-circular block 12 and the round block 13. The round block 13 gradually approaches the semi-circular block 12, applying pressure to the metal pipe, causing the metal pipe to bend around the arc surface of the semi-circular block 12, thereby realizing the pipe bending operation.

[0047] The specific embodiments of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A hydraulic pipe bender, characterized in that, Including: A pipe bending mechanism, the pipe bending mechanism includes a platform, a semi-circular block is rotatably connected to the platform, a circular block is slidably connected to the platform with the center of the semi-circular block as the center of the circle, semi-circular grooves for accommodating a metal pipe are provided on the semi-circular block and the circular block, and a power assembly for driving the circular block to move is provided on the platform; and, A positioning mechanism, the positioning mechanism includes a positioning plate provided on the platform for abutting against the end of the metal pipe, a positioning block is provided on the positioning plate, and a positioning groove for abutting against the side wall of the metal pipe is provided on the positioning block.

2. The hydraulic pipe bender according to claim 1, characterized in that, The positioning plate is slidably connected to the platform along the length direction of the metal pipe, and a fixing assembly for fixing the positioning plate is provided on the platform.

3. A hydraulic pipe bender according to claim 2, characterized in that, The fixing assembly includes a jack provided on the positioning plate, a plug rod is inserted into the jack, and a plurality of slots for accommodating the plug rod are provided on the platform at intervals along the sliding direction of the positioning plate.

4. A hydraulic pipe bender according to claim 3, characterized in that, A spring is sleeved on the plug rod, one end of the spring is connected to the plug rod, the other end of the spring is connected to the positioning plate, the spring is in a stretched state, and the spring causes the plug rod to have a tendency to slide in the direction close to the platform.

5. A hydraulic pipe bender according to claim 3, characterized in that, The end of the plug rod is spherical.

6. The hydraulic pipe bender according to claim 3, characterized in that, A handle is provided on the plug rod.

7. A hydraulic pipe bender according to claim 1, characterized in that, A clamping plate is slidably connected to the positioning plate, a clamping groove is provided on the clamping plate, the clamping groove is used for abutting against the side wall of the metal pipe, and a driving assembly for driving the clamping plate to slide is provided on the positioning plate.

8. A hydraulic pipe bender according to claim 7, characterized in that, The driving assembly includes a first hydraulic cylinder provided on the positioning plate, and the piston rod of the first hydraulic cylinder is connected to the clamping plate.

9. A hydraulic pipe bender according to claim 7, wherein, Elastic layers are provided on the inner walls of the positioning groove and the clamping groove.

10. A hydraulic pipe bender according to claim 1, characterized in that, The power assembly includes a second hydraulic cylinder rotatably connected to the platform, and the piston rod of the second hydraulic cylinder is rotatably connected to the circular block.

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