Bent pipe positioning tool

Abstract

The utility model relates to the technical field of bent pipe welding, in particular to a bent pipe positioning tool which comprises a base plate, a bending wheel is rotationally connected to the upper portion of the base plate, a positioning head is connected to one side of the bending wheel, and the end, close to the bending wheel, of the positioning head is a cambered surface complementary with the cambered surface end of a pipeline. The cambered-surface end of the pipeline is aligned with the cambered-surface end of the positioning head, and a fixing structure used for fixing the pipeline is connected to the upper portion of the base plate. The effects that the pipe bending efficiency is improved, and the pipe bending machining precision is higher are achieved.

Description

Technical Field

[0001] This application relates to the field of pipe bending welding technology, and in particular to a pipe bending positioning tool. Background Technology

[0002] like Figure 1 As shown, the bend that connects to the side surface of the pipe needs to be processed into an arc surface at one end. When bending the pipe, the direction of the bend needs to be limited according to the direction of the arc surface so that the bend can be bent in the predetermined direction after welding. However, the bending direction of existing bends is mostly determined by the operator's experience, which not only results in low processing accuracy but also low bending efficiency. Utility Model Content

[0003] This application provides a pipe bending positioning fixture to improve pipe bending efficiency and increase pipe bending processing accuracy.

[0004] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0005] A pipe bending positioning fixture includes a base plate, a bending wheel rotatably connected above the base plate, and a positioning head connected to one side of the bending wheel. The end of the positioning head near the bending wheel is an arc surface that is complementary to the arc surface of the pipe. When the pipe is bent, the arc surface of the pipe is aligned with the arc surface of the positioning head. A fixing structure for fixing the pipe is connected above the base plate.

[0006] By adopting the above solution, when it is necessary to bend the pipe, the curved surface of the pipe is aligned with the positioning head, the pipe is fixed by the fixing structure, and then the bending wheel is rotated to bend the pipe. At this time, the bending direction of the pipe is fixed, thereby achieving directional bending, which improves the efficiency of pipe bending and makes the pipe bending more accurate.

[0007] Optionally, the bending wheel is fixedly connected to a connecting rod, and the connecting rod is fixedly connected to a fixing plate. The fixing plate is perpendicular to the connecting rod. A circular hole is opened on the surface of the fixing plate, and a threaded rod is installed in the circular hole. The end of the threaded rod near the bending wheel is fixedly connected to the positioning head, and the end of the threaded rod opposite to the arc surface of the positioning head is fixedly connected to the positioning head. Two nuts are threadedly connected to the surface of the threaded rod, and the two nuts are located on opposite sides of the fixing plate.

[0008] By adopting the above solution, the operator can adjust the position of the positioning head by adjusting the position of the nut on the threaded rod, thereby adjusting the distance between the pipe bend and the pipe end. The operator only needs to tighten the nuts at both ends of the fixing plate to fix the threaded rod.

[0009] Optionally, a limiting plate is fixedly connected to the side of the fixed plate away from the bending wheel. A rectangular hole is provided on the limiting plate, and a rectangular block is fixedly connected to the end of the threaded rod away from the positioning head. The rectangular block is slidably connected in the rectangular hole.

[0010] By adopting the above solution, the rotation of the threaded rod and the positioning head is restricted, thus preventing the positioning head from rotating and causing errors in the bending direction of the pipe.

[0011] Optionally, the bending wheel is connected to a clamping block located at the connection between the positioning head and the pipe. The clamping block is used to clamp the positioning head and the pipe to prevent the positioning head from separating from the pipe when bending the pipe. When bending the pipe, the bending wheel and the clamping block are located on opposite sides of the positioning head and clamp the positioning head.

[0012] By adopting the above solution, clamping blocks are set to clamp the positioning head and the pipe connection, preventing the pipe from separating from the positioning head when bending the pipe, thus making the pipe bending smoother.

[0013] Optionally, the circumferential surface of the bending wheel is provided with a snap-fit ​​groove, and a pin groove is provided on the side surface of the snap-fit ​​groove. A pin is slidably connected in the pin groove, and a pin spring is fixedly connected to the bottom of the pin groove. The end of the pin spring away from the bottom of the pin groove is fixedly connected to the pin, and the end of the pin spring away from the pin spring is inclined, with the inclined surface facing the opening of the snap-fit ​​groove. A snap-fit ​​rod is fixedly connected to the side of the clamping block near the bending wheel, and a snap-fit ​​groove is provided on one side surface of the snap-fit ​​rod. When the bending wheel and the clamping block clamp the positioning head, the snap-fit ​​rod is inserted into the snap-fit ​​groove, and the pin is inserted into the snap-fit ​​groove. A guide rod is fixedly connected to the side of the bending wheel near the clamping block, and a guide hole is provided on the surface of the clamping block. The guide rod is slidably connected in the guide hole.

[0014] By adopting the above scheme, when the bending wheel and clamping block need to clamp the positioning head, the clamping block is pushed to move along the guide rod, and the snap-fit ​​rod is inserted into the snap-fit ​​groove, so that the snap-fit ​​rod presses the snap-fit ​​pin completely into the pin groove until the snap-fit ​​groove and the pin groove are aligned. At this time, the pin spring rebounds, so that one end of the snap-fit ​​pin is inserted into the snap-fit ​​groove, thereby fixing the snap-fit ​​rod in the snap-fit ​​groove, thereby fixing the bending wheel and clamping block, and enabling the bending wheel and clamping block to clamp the end of the pipe.

[0015] Optionally, the bending wheel has a sliding hole on its surface, which is connected to the pin groove. A sliding rod is slidably connected in the sliding hole, and the sliding rod is fixedly connected to the locking pin. The sliding rod can drive the locking pin to slide in the pin groove.

[0016] By adopting the above method, after the pipe is bent, the operator can pull the slide rod to make the slide rod drive the locking pin to slide out in the locking groove, and then slide the locking rod out of the locking groove to separate the bending wheel and the clamping block, thereby removing the bent pipe.

[0017] Optionally, a first bevel gear is fixedly connected to the lower surface of the bending wheel, a transmission cavity is opened in the base plate, a wheel rod is rotatably connected in the transmission cavity, a second bevel gear is fixedly connected to the wheel rod, the first bevel gear meshes with the second bevel gear, a worm gear is fixedly connected to the wheel rod, the worm gear meshes with a worm, one end of the worm protrudes from the base plate, and a handwheel is fixedly connected to the end of the worm protruding from the base plate.

[0018] By adopting the above scheme, the operator can rotate the worm gear to drive the worm wheel to rotate, which in turn drives the wheel rod and the second bevel gear to rotate, and then drives the first bevel gear and the bent wheel to rotate. Moreover, the worm wheel and worm gear have a speed reduction effect, making it easier for the operator to rotate the bent wheel.

[0019] Optionally, the fixing structure includes a fixing plate located on the side of the pipe away from the bending wheel. A groove is provided above the base plate, and a slider is slidably connected in the groove. The direction of the groove is parallel to the axis of the pipe when it is not bent. The fixing plate is fixedly connected to the slider. A spring is provided in the groove, and one end of the spring is fixedly connected to the slider.

[0020] By adopting the above scheme, a fixing plate is set to fix the pipe, so that the pipe can be bent smoothly, and the sliding groove allows the fixing plate to move with the pipe in the axial direction, making the pipe bend smoother.

[0021] In summary, this application has the following technical effects:

[0022] 1. By setting up a positioning head, operators can more accurately determine the direction of pipe bending, thereby improving bending efficiency and increasing the precision of pipe bending processing;

[0023] 2. By setting a limit plate to restrict the rotation of the threaded rod, the direction of pipe bending is made more precise;

[0024] 3. By setting a snap-fit ​​rod and a snap-fit ​​pin, the snap-fit ​​pin is inserted into the snap-fit ​​groove, thereby fixing the snap-fit ​​rod in the snap-fit ​​groove, so that the bending wheel and clamping block clamp the positioning head and the pipe. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the pipeline in this application;

[0026] Figure 2 This is a schematic diagram of the overall structure of this application;

[0027] Figure 3 This is a partial structural diagram intended to emphasize the connecting rod in this application;

[0028] Figure 4 This application is intended to emphasize a partial structural cross-sectional view of the card-connecting block;

[0029] Figure 5 This is a partial structural cross-sectional view intended to emphasize the internal structure of the transmission cavity in this application.

[0030] In the diagram, 1 is the base plate; 11 is the sliding groove; 2 is the bending wheel; 21 is the connecting rod; 22 is the fixing plate; 23 is the limiting plate; 24 is the snap-fit ​​groove; 25 is the pin groove; 26 is the sliding hole; 27 is the first bevel gear; 3 is the positioning head; 31 is the threaded rod; 311 is the nut; 32 is the rectangular block; 4 is the clamping block; 41 is the snap-fit ​​block; 411 is the snap groove; 42 is the snap pin; 421 is the pin spring; 422 is the sliding rod; 5 is the wheel rod; 51 is the second bevel gear; 52 is the worm gear; 6 is the worm; 7 is the fixing plate; and 71 is the spring. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 2 A pipe bending positioning fixture includes a base plate 1, a bending wheel 2 rotatably connected above the base plate 1, and a positioning head 3 connected to one side of the bending wheel 2. The end of the positioning head 3 near the bending wheel 2 has an arc surface complementary to the arc surface of the pipe. When the pipe is bent, the arc surface of the pipe aligns with the arc surface of the positioning head 3. A fixing structure for fixing the pipe is connected above the base plate 1. By fixing the pipe with the fixing structure, the bending wheel 2 is then rotated to bend the pipe. At this time, the bending direction of the pipe is fixed, thereby achieving directional bending, improving the efficiency of pipe bending, and making the pipe bending more accurate.

[0033] Reference Figure 2 and Figure 3 A bending wheel 2 is fixedly connected to a connecting rod 21, and a fixing plate 722 is fixedly connected to the connecting rod 21. The fixing plate 722 is perpendicular to the connecting rod 21. A circular hole is opened on the surface of the fixing plate 722, and a threaded rod 31 is installed in the circular hole. The end of the threaded rod 31 near the bending wheel 2 is fixedly connected to the positioning head 3, and the end of the threaded rod 31 opposite the arc surface of the positioning head 3 is fixedly connected to it. Two nuts 311 are threadedly connected to the surface of the threaded rod 31, and the two nuts 311 are located on opposite sides of the fixing plate 722. The operator can adjust the position of the positioning head 3 by adjusting the position of the nuts 311 on the threaded rod 31, thereby adjusting the distance between the pipe bend and the pipe end. The operator only needs to tighten the nuts 311 at both ends of the fixing plate 722 to fix the threaded rod 31. A limiting plate 23 is fixedly connected to the side of the fixed plate 722 away from the bending wheel 2. The limiting plate 23 has a rectangular hole. A rectangular block 32 is fixedly connected to the end of the threaded rod 31 away from the positioning head 3. The rectangular block 32 is slidably connected in the rectangular hole. This restricts the rotation of the threaded rod 31 and the positioning head 3, preventing the positioning head 3 from rotating and causing errors in the bending direction of the pipe.

[0034] Reference Figure 3 and Figure 4The bending wheel 2 is connected to a clamping block 4, which is located at the connection between the positioning head 3 and the pipe. The clamping block 4 is used to clamp the positioning head 3 and the pipe, preventing the positioning head 3 from separating from the pipe when bending it. When bending the pipe, the bending wheel 2 and the clamping block 4 are located on opposite sides of the positioning head 3 and clamp the positioning head 3. The clamping block 4 clamps the connection between the positioning head 3 and the pipe, preventing the pipe from separating from the positioning head 3 when bending it, making the pipe bending smoother.

[0035] Reference Figure 4 The circumferential surface of the bending wheel 2 is provided with a locking groove 24, and a pin groove 25 is provided on the side surface of the locking groove 24. A locking pin 42 is slidably connected in the pin groove 25. A pin spring 421 is fixedly connected to the bottom of the pin groove 25. The end of the pin spring 421 away from the bottom of the pin groove 25 is fixedly connected to the locking pin 42, and the end away from the pin spring 421 is inclined, with the inclined surface facing the opening of the locking groove 24. A locking rod is fixedly connected to the side of the clamping block 4 near the bending wheel 2, and a locking groove 411 is provided on one side surface of the locking rod. When the bending wheel 2 and the clamping block 4 clamp the positioning head 3, the locking rod is inserted into the locking groove 24, and the locking pin 42 is inserted into the locking groove 411. A guide rod is fixedly connected to the side of the bending wheel 2 near the clamping block 4, and a guide hole is provided on the surface of the clamping block 4. The guide rod is slidably connected in the guide hole. When the bending wheel 2 and clamping block 4 need to clamp the positioning head 3, push the clamping block 4 to move along the guide rod, and insert the snap-fit ​​rod into the snap-fit ​​groove 24, so that the snap-fit ​​rod completely presses the snap-fit ​​pin 42 into the pin groove 25 until the snap-fit ​​groove 411 is aligned with the pin groove 25. At this time, the pin spring 421 rebounds, so that one end of the snap-fit ​​pin 42 is inserted into the snap-fit ​​groove 411, thereby fixing the snap-fit ​​rod in the snap-fit ​​groove 24, thereby fixing the bending wheel 2 and clamping block 4, so that the bending wheel 2 and clamping block can clamp the end of the pipe.

[0036] Reference Figure 4 The bending wheel 2 has a sliding hole 26 on its surface, which communicates with the pin groove 25. A sliding rod 422 is slidably connected in the sliding hole 26 and is fixedly connected to the locking pin 42. The sliding rod 422 can drive the locking pin 42 to slide in the pin groove 25. After the pipe is bent, the operator can pull the sliding rod 422 to make the locking pin 42 slide out in the locking groove 411. Then, the locking rod is slid out of the locking groove 24, so that the bending wheel 2 and the clamping block 4 are separated, thereby removing the bent pipe.

[0037] Reference Figure 5A first bevel gear 27 is fixedly connected to the lower surface of the bending wheel 2. A transmission cavity is formed inside the base plate 1, and a wheel rod 5 is rotatably connected inside the transmission cavity. A second bevel gear 51 is fixedly connected to the wheel rod 5. The first bevel gear 27 and the second bevel gear 51 mesh. A worm gear 52 is fixedly connected to the wheel rod 5, and the worm gear 52 meshes with a worm 6. One end of the worm 6 extends out of the base plate 1, and a handwheel is fixedly connected to the other end of the worm 6 extending out of the base plate 1. The operator can rotate the worm 6 to drive the worm gear 52 to rotate, thereby driving the wheel rod 5 and the second bevel gear 51 to rotate, which in turn drives the first bevel gear 27 and the bending wheel 2 to rotate. The worm gear 52 and the worm 6 have a speed reduction effect, making it easier for the operator to rotate the bending wheel 2.

[0038] Reference Figure 1 The fixing structure includes a fixing plate 722, located on the side of the pipe away from the bending wheel 2. A groove 11 is formed above the base plate 1, and a slider is slidably connected within the groove 11. The direction of the groove 11 is parallel to the axis of the pipe when it is not bent. The fixing plate 722 is fixedly connected to the slider. A spring 71 is provided within the groove 11, and one end of the spring 71 is fixedly connected to the slider. The fixing plate 722 fixes the pipe, allowing it to bend smoothly. The groove 11 also allows the fixing plate 722 to move along the axial direction of the pipe, making the bending of the pipe smoother.

[0039] The specific implementation principle of this application is as follows: When it is necessary to bend the pipe, the pipe is placed between the bending wheel 2 and the fixing plate 722. Then, one curved end of the pipe is pressed against the positioning head 3, so that the curved surface of the positioning head 3 and the curved surface of the pipe are in contact. Then, the clamping block 4 moves along the slide rail toward the bending wheel 2, so that the locking rod slides into the locking groove 24. During the movement, the locking rod presses the locking pin 42 into the pin groove 25, thereby compressing the pin spring 421, until the locking rod is fully inserted into the locking groove. Within 24, the spring 421 returns, causing the locking pin 42 to insert into the slot 411, thereby locking the locking rod in the slot 24. This causes the clamping block 4 and the bending wheel 2 to clamp the end of the pipe. Then, the operator rotates the worm gear 6, which drives the worm wheel 52 to rotate, thereby driving the bending wheel 2 to rotate and bend the pipe. Afterward, the operator pulls the locking pin 42 out of the slot 411 through the slide rod 422, separating the clamping block 4 and the bending wheel 2, and removing the pipe, thus achieving the bending of the pipe.

[0040] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A pipe bending positioning fixture, characterized in that: Includes a base plate (1), a bending wheel (2) is rotatably connected above the base plate (1), and a positioning head (3) is connected to one side of the bending wheel (2). The end of the positioning head (3) near the bending wheel (2) is an arc surface that is complementary to the arc surface of the pipe. When the pipe is bent, the arc surface of the pipe is aligned with the arc surface of the positioning head (3). A fixing structure for fixing the pipe is connected above the base plate (1).

2. The pipe bending positioning fixture according to claim 1, characterized in that: The bending wheel (2) is fixedly connected to a connecting rod (21), and the connecting rod (21) is fixedly connected to a fixing plate (7)(22). The fixing plate (7)(22) is perpendicular to the connecting rod (21). A circular hole is opened on the surface of the fixing plate (7)(22), and a threaded rod (31) is provided in the circular hole. The end of the threaded rod (31) near the bending wheel (2) is fixedly connected to the positioning head (3), and the end of the threaded rod (31) and the positioning head (3) opposite to the arc surface are fixedly connected. Two nuts (311) are threadedly connected to the surface of the threaded rod (31), and the two nuts (311) are located on opposite sides of the fixing plate (7)(22).

3. The pipe bending positioning fixture according to claim 2, characterized in that: The fixed plate (7) and (22) are fixedly connected to the limiting plate (23) on the side away from the bending wheel (2). The limiting plate (23) has a rectangular hole. A rectangular block (32) is fixedly connected to the end of the threaded rod (31) away from the positioning head (3). The rectangular block (32) is slidably connected in the rectangular hole.

4. The pipe bending positioning fixture according to claim 1, characterized in that: The bending wheel (2) is connected to a clamping block (4). The clamping block (4) is located at the connection between the positioning head (3) and the pipe. The clamping block (4) is used to clamp the positioning head (3) and the pipe to prevent the positioning head (3) from separating from the pipe when bending the pipe. When bending the pipe, the bending wheel (2) and the clamping block (4) are located on opposite sides of the positioning head (3) and clamp the positioning head (3).

5. A pipe bending positioning fixture according to claim 4, characterized in that: The circumferential surface of the bending wheel (2) is provided with a snap-fit ​​groove (24), and a pin groove (25) is provided on the side surface of the snap-fit ​​groove (24). A snap pin (42) is slidably connected in the pin groove (25). A pin spring (421) is fixedly connected to the bottom of the pin groove (25). The end of the pin spring (421) away from the bottom of the pin groove (25) is fixedly connected to the snap pin (42), and the end of the pin spring (421) away from the bottom of the pin groove (25) is inclined, with the inclined surface facing the opening of the snap-fit ​​groove (24). A snap-fit ​​rod is fixedly connected to the side of the clamping block (4) near the bending wheel (2), and a snap-fit ​​groove (411) is opened on one side of the snap-fit ​​rod. When the bending wheel (2) and the clamping block (4) clamp the positioning head (3), the snap-fit ​​rod is inserted into the snap-fit ​​groove (24), and the snap-fit ​​pin (42) is inserted into the snap-fit ​​groove (411). A guide rod is fixedly connected to the side of the bending wheel (2) near the clamping block (4), and a guide hole is opened on the surface of the clamping block (4). The guide rod is slidably connected in the guide hole.

6. A pipe bending positioning fixture according to claim 5, characterized in that: The bending wheel (2) has a sliding hole (26) on its surface. The sliding hole (26) is connected to the pin groove (25). A sliding rod (422) is slidably connected in the sliding hole (26). The sliding rod (422) is fixedly connected to the locking pin (42). The sliding rod (422) can drive the locking pin (42) to slide in the pin groove (25).

7. The pipe bending positioning fixture according to claim 1, characterized in that: The bending wheel (2) is fixedly connected to the lower surface of the first bevel gear (27). A transmission cavity is opened in the base plate (1). A wheel rod (5) is rotatably connected in the transmission cavity. A second bevel gear (51) is fixedly connected to the wheel rod (5). The first bevel gear (27) meshes with the second bevel gear (51). A worm gear (52) is fixedly connected to the wheel rod (5). A worm (6) meshes with the worm gear (52). One end of the worm (6) extends out of the base plate (1).

8. A pipe bending positioning fixture according to claim 1, characterized in that: The fixing structure includes a fixing plate (7)(22), which is located on the side of the pipe away from the bending wheel (2). A sliding groove (11) is provided above the base plate (1). A slider is slidably connected in the sliding groove (11), and the direction of the sliding groove (11) is parallel to the axis of the pipe when it is not bent. The fixing plate (7)(22) is fixedly connected to the slider. A spring (71) is provided in the sliding groove (11), and one end of the spring (71) is fixedly connected to the slider.

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