A device for bending HDPE pipes

Abstract

The utility model relates to pipe bending technical field discloses a kind of HDPE pipe bending device, including bending table, the upper surface of bending table is fixedly connected with fixed clamp block, and the upper surface of bending table is provided with clamping mechanism in the front of fixed clamp block, the upper surface of bending table is fixedly connected with rotary rod one in the right of fixed clamp block, the outside of rotary rod one is rotatably sleeved with passive roller;The upper surface of bending table is fixedly connected with L-shaped plate in the rear of rotary rod one, the inside of L-shaped plate is rotatably connected with rotary rod two in the up-down direction;The utility model places HDPE pipe on bending table, so that it is located between fixed clamp block and movable clamp block and between passive roller and driving roller, and movable clamp block is clamped with fixed clamp block by rotating screw rod, then telescopic cylinder is started to extend and drive rack moves back, driving gear counterclockwise rotates, in turn drive swing arm counterclockwise rotates and force driving roller to swing counterclockwise around passive roller, the bending forming of clamping fixed pipe can be automatically completed.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe technology, specifically an HDPE pipe bending device. Background Technology

[0002] HDPE pipes are commonly used in home decoration, including HDPE conduit and HDPE water pipe. When using HDPE conduit, it is inevitable to need to bend the pipe, which requires bending the HDPE conduit.

[0003] Common bending methods include cold bending and hot bending. Cold bending is more commonly used because the environment is simpler. A common cold bending method involves inserting a spring into the HDPE pipe, which makes bending the pipe faster and produces a better result. However, bending HDPE requires a lot of force, and many pipes need to be bent in home renovations. Relying solely on workers is physically demanding and can easily cause arm pain for them.

[0004] Chinese patent discloses a PVC pipe bending device (authorization announcement number CN220349042U). This patented technology has certain drawbacks: the operation steps are complicated when bending the pipe, involving multiple manual adjustments and component coordination operations. For example, it is necessary to manually adjust the position of the slider and tighten the bolts to position the folding block, move the slide plate through the electric slide rail to adjust the position of the first cylinder, rely on the extension and retraction of multiple cylinders (such as the second cylinder and the third cylinder) to position the pressure block and adjust the bending position, and use a fourth cylinder and U-shaped plate and other mechanisms to insert and remove the spring. The entire process of placing the pipe, fixing the position, performing the bending and handling the spring involves a large number of steps, which is cumbersome and inefficient. There is an urgent need to simplify the operation process. Utility Model Content

[0005] The purpose of this invention is to provide an HDPE pipe bending device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An HDPE pipe bending device includes a bending table, a fixed clamping block is fixedly connected to the upper surface of the bending table, and a clamping mechanism is provided on the upper surface of the bending table in front of the fixed clamping block. A rotating rod is fixedly connected to the upper surface of the bending table to the right of the fixed clamping block, and a passive roller is rotatably sleeved on the outside of the rotating rod.

[0008] An L-shaped plate is fixedly connected to the upper surface of the bending platform behind the first rotating rod. A second rotating rod is rotatably connected through the inside of the L-shaped plate in the vertical direction. A swing arm is fixedly connected to the lower end of the second rotating rod. A third rotating rod is rotatably connected through the front end of the swing arm in the vertical direction. A drive roller is fixedly connected to the lower end of the third rotating rod. A gear is fixedly sleeved on the outside of the second rotating rod above the L-shaped plate. A rotating mechanism is provided on the upper surface of the L-shaped plate to the right of the second rotating rod.

[0009] As a further embodiment of this utility model: the clamping mechanism includes a support block, and a screw is threaded through the interior of the support block in the front-to-back direction, and a movable clamping block is rotatably connected to the rear end of the screw.

[0010] As a further embodiment of this utility model: the rotating mechanism includes a fixed block, a telescopic cylinder is fixedly connected to the front surface of the fixed block, and a rack is fixedly connected to the telescopic end of the telescopic cylinder.

[0011] As a further improvement of this utility model, the front surfaces of the fixed clamping block and the passive roller are flush.

[0012] As a further improvement of this utility model, the centerlines of the second rotating rod and the first rotating rod are located on the same vertical line.

[0013] As a further embodiment of this utility model: the lower end of the support block is fixed to the upper surface of the bending platform, the lower surface of the movable clamping block is movably attached to the upper surface of the bending platform, and the movable clamping block is located in front of the fixed clamping block.

[0014] As a further embodiment of this utility model: the lower end of the fixing block is fixed to the upper surface of the bending platform, the rack is embedded and slidably connected to the upper surface of the L-shaped plate in the front-back direction, the rack is located to the right of the gear, and the rack is meshed with the gear.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention automatically bends the clamped and fixed pipe by placing an HDPE pipe with a bending spring on a bending table, positioning it between a fixed clamping block and a moving clamping block, and between a passive roller and a driving roller. A screw is rotated to engage the moving clamping block with the fixed clamping block to clamp the pipe. Then, a telescopic cylinder extends, causing a rack to move backward, driving a gear to rotate counterclockwise. This, in turn, causes a swing arm to rotate counterclockwise, forcing the driving roller to swing counterclockwise around the passive roller, thus automatically completing the bending of the clamped and fixed pipe. After bending, the moving clamping block is released to remove the bent pipe. The entire operation is simple, and the bending process requires no manual intervention, significantly reducing labor intensity and improving efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pipe bending device for HDPE pipes.

[0018] Figure 2 This is a schematic diagram of the clamping mechanism in an HDPE pipe bending device.

[0019] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0020] Figure 4 This is a schematic diagram of the rotating mechanism in an HDPE pipe bending device.

[0021] In the diagram: 1. Bending platform; 2. Fixed clamping block; 3. Clamping mechanism; 4. Support block; 5. Screw; 6. Moving clamping block; 7. Rotating rod one; 8. Passive roller; 9. L-shaped plate; 10. Rotating rod two; 11. Swing arm; 12. Rotating rod three; 13. Active roller; 14. Gear; 15. Rotating mechanism; 16. Fixed block; 17. Telescopic cylinder; 18. Rack. Detailed Implementation

[0022] Please see Figures 1-3 In this embodiment of the present invention, an HDPE pipe bending device includes a bending platform 1, a fixed clamping block 2 fixedly connected to the upper surface of the bending platform 1, and a clamping mechanism 3 located in front of the fixed clamping block 2 on the upper surface of the bending platform 1. The clamping mechanism 3 includes a support block 4, the lower end of the support block 4 fixedly connected to the upper surface of the bending platform 1, a screw 5 threaded through the interior of the support block 4 in the front-back direction, and a movable clamping block 6 rotatably connected to the rear end of the screw 5. The lower surface of the movable clamping block 6 is movably attached to the upper surface of the bending platform 1, and its contact surface can be inlaid with a low-friction material (such as a polytetrafluoroethylene gasket). The movable clamping block 6 is located in front of the fixed clamping block 2.

[0023] The upper surface of the pipe bending platform 1 is fixed to the right of the fixed clamping block 2 with a rotating rod 7. A driven roller 8 is rotatably sleeved on the outside of the rotating rod 7. The front surfaces of the fixed clamping block 2 and the driven roller 8 are flush, i.e., on the same vertical plane, which provides a reference for the positioning of the pipe. The upper surface of the pipe bending platform 1 is fixed to the rear of the rotating rod 7 with an L-shaped plate 9. The interior of the L-shaped plate 9 is rotatably connected to a rotating rod 10 in the vertical direction. The axis of the rotating rod 10 and the rotating rod 7 are on the same vertical line. The lower end of the rotating rod 10 is fixed to a swing arm 11. The front end of the swing arm 11 is rotatably connected to a rotating rod 12 in the vertical direction. The lower end of the rotating rod 12 is fixed to a drive roller 13.

[0024] The screw 5 and the moving clamp 6, the rotating rod 7 and the driven roller 8, the L-shaped plate 9 and the rotating rod 2 10, and the swing arm 11 and the rotating rod 3 12 are all rotatably connected by bearings;

[0025] In the initial state, the driving roller 13 is located directly in front of the driven roller 8;

[0026] The HDPE pipe is clamped and fixed by the fixed clamping block 2 and the movable clamping block 6; the V-shaped groove or arc-shaped concave surface set on the opposite side of the fixed clamping block 2 and the movable clamping block 6 realizes the stable clamping and fixing of the HDPE pipe placed between the two.

[0027] The HDPE pipe with an internal bending spring is placed between the fixed clamping block 2 and the moving clamping block 6, and between the passive roller 8 and the active roller 13. The HDPE pipe can be bent by rotating the swing arm 11 counterclockwise.

[0028] exist Figure 1 and Figure 4 In the middle: The gear 14 is fixedly sleeved on the outside of the rotating rod 10 above the L-shaped plate 9. The rotating mechanism 15 is set on the upper surface of the L-shaped plate 9 to the right of the rotating rod 10. The rotating mechanism 15 includes a fixed block 16. The lower end of the fixed block 16 is fixedly connected to the upper surface of the bending platform 1. The front surface of the fixed block 16 is fixedly connected to a telescopic cylinder 17. The telescopic end of the telescopic cylinder 17 is fixedly connected to a rack 18. The rack 18 is embedded and slidably connected to the upper surface of the L-shaped plate 9 in the front-back direction. The rack 18 is located to the right of the gear 14 and is meshed with the gear 14.

[0029] The telescopic cylinder 17 is preferably a servo electric cylinder, which can precisely adjust the telescopic stroke; in the initial state, the telescopic cylinder 17 is in the retracted state, at which time the active roller 13 is located directly in front of the passive roller 8;

[0030] The extension of the telescopic cylinder 17 drives the rack 18 to move backward, thereby driving the gear 14 to rotate counterclockwise, which in turn drives the swing arm 11 to rotate counterclockwise to bend the HDPE pipe, reducing the intensity of manual labor.

[0031] The bottom of the rack 18 is fixed with an integrally formed T-shaped strip, which is embedded and slidably connected in the T-shaped groove on the upper surface of the L-shaped plate 9.

[0032] The working principle of this utility model is as follows: During operation, the HDPE pipe with a bending spring inside is first placed on the bending table 1, so that it is positioned between the fixed clamping block 2 and the moving clamping block 6, and simultaneously between the passive roller 8 and the active roller 13. Then, the screw 5, which is threaded into the support block 4, is rotated to push the moving clamping block 6 to move backward, cooperating with the fixed clamping block 2 to clamp and fix the pipe. During the bending process, the telescopic cylinder 17, which is fixed to the front surface of the fixed block 16, is activated to extend and drive the rack 18 to move backward, meshing and driving the gear 14, which is fixedly sleeved on the rotating rod 10, to rotate counterclockwise, driving the swing arm 11 to rotate counterclockwise, forcing the active roller 13 to swing counterclockwise around the passive roller 8, thereby bending the HDPE pipe that is clamped, fixed, and supported between the two rollers. After the bending is completed, the screw 5 is reversed to release the moving clamping block 6 of the clamping mechanism 3, and the formed bent pipe can be removed.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. An HDPE pipe bending device, comprising a bending platform (1), wherein a fixed clamping block (2) is fixedly connected to the upper surface of the bending platform (1), and a clamping mechanism (3) is provided on the upper surface of the bending platform (1) in front of the fixed clamping block (2), and a rotating rod (7) is fixedly connected to the upper surface of the bending platform (1) to the right of the fixed clamping block (2), and a passive roller (8) is rotatably sleeved on the outside of the rotating rod (7). Its features are, An L-shaped plate (9) is fixedly connected to the upper surface of the bending platform (1) behind the first rotating rod (7). A second rotating rod (10) is rotatably connected through the inside of the L-shaped plate (9) in the vertical direction. A swing arm (11) is fixedly connected to the lower end of the second rotating rod (10). A third rotating rod (12) is rotatably connected through the front end of the swing arm (11) in the vertical direction. An active roller (13) is fixedly connected to the lower end of the third rotating rod (12). A gear (14) is fixedly sleeved on the outside of the second rotating rod (10) above the L-shaped plate (9). A rotating mechanism (15) is provided on the upper surface of the L-shaped plate (9) to the right of the second rotating rod (10).

2. The HDPE pipe bending device according to claim 1, characterized in that, The clamping mechanism (3) includes a support block (4), and a screw (5) is threaded through the interior of the support block (4) in the front-to-back direction. A movable clamping block (6) is rotatably connected to the rear end of the screw (5).

3. The HDPE pipe bending device according to claim 1, characterized in that, The rotating mechanism (15) includes a fixed block (16), and a telescopic cylinder (17) is fixedly connected to the front surface of the fixed block (16). A rack (18) is fixedly connected to the telescopic end of the telescopic cylinder (17).

4. The HDPE pipe bending device according to claim 1, characterized in that, The front surfaces of the fixed clamping block (2) and the passive roller (8) are flush.

5. The HDPE pipe bending device according to claim 1, characterized in that, The axis lines of the second rotating rod (10) and the first rotating rod (7) are located on the same vertical line.

6. The HDPE pipe bending device according to claim 2, characterized in that, The lower end of the support block (4) is fixed to the upper surface of the bending platform (1), and the lower surface of the movable clamp block (6) is movably attached to the upper surface of the bending platform (1), and the movable clamp block (6) is located in front of the fixed clamp block (2).

7. The HDPE pipe bending device according to claim 3, characterized in that, The lower end of the fixed block (16) is fixed to the upper surface of the bending platform (1), and the rack (18) is embedded and slidably connected to the upper surface of the L-shaped plate (9) in the front-back direction. The rack (18) is located to the right of the gear (14), and the rack (18) is meshed with the gear (14).

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