Manual pipe bending device

Abstract

The utility model provides a manual pipe bending device and aims to solve the technical problem that physical properties of metal pipes are damaged when the pipe bending angle of an existing pipe bending device is too small. The manual pipe bending device comprises an operation table, a supporting wheel, a pressing rod, a supporting rod, a pressing wheel and a positioning wheel. Wherein the supporting wheel is arranged on the operation table, the pressing rod is rotationally arranged on the supporting wheel, the supporting rod is rotationally arranged on the pressing rod, the pressing wheel is arranged on the supporting rod, and the positioning wheel is arranged on the operation table. During operation, a pipe is placed between the positioning wheel and the supporting wheel, the two pressing wheels are pressed on the side portion of the pipe, then the pressing rod is manually driven to rotate around the axis of the supporting wheel, the two pressing wheels apply pressure to two point positions on the pipe at the same time, stress points on the side portion of the pipe are dispersed, and therefore the problem of dead bending or wrinkling is avoided. The physical property of the pipe is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, specifically to a manual pipe bending device. Background Technology

[0002] A manual pipe bender is a hand tool used to bend straight metal pipes into bent pipes. It is operated manually to bend the pipes into shape without the need for electricity or other power sources, and is widely used in machinery manufacturing, construction, chemical construction and other fields.

[0003] Currently, manual pipe benders are limited by the pipe diameter. When the bending angle is too small, it can cause dead bends and wrinkles in the pipe, damaging the physical properties of the metal pipe. If a medium is flowing through it, this can reduce the pipe's flow capacity and lead to leakage risks. Utility Model Content

[0004] To address the technical problem that current pipe benders can damage the physical properties of metal pipes when the bending angle is too small, this utility model provides a manual pipe bending device. By setting two pressure rollers, the stress points on the side of the pipe are distributed, thereby avoiding the problem of dead bends or wrinkles and protecting the physical properties of the pipe from damage.

[0005] The technical solution of this utility model is:

[0006] A manual pipe bending device, comprising:

[0007] The control panel has a flat working surface on its top surface.

[0008] The support wheel has a circular structure and is fixedly mounted on the working surface;

[0009] A pressure rod is rotatably mounted on the support wheel at one end, and the axis of rotation of the pressure rod is collinear with the axis of the support wheel;

[0010] The support rod, the middle part of which is rotatably connected to the middle part of the pressure rod;

[0011] Two pressure rollers are respectively rotatably mounted at both ends of the support rod;

[0012] A positioning wheel is provided on the working surface, and there is a gap between the positioning wheel and the wheel surface of the support wheel.

[0013] Optionally, it also includes:

[0014] Several rings can be fitted onto the support wheel;

[0015] The support rod is slidably mounted on the pressure rod, and the positioning wheel is movably mounted on the working surface.

[0016] Optionally, the collar has a C-shaped structure;

[0017] The working surface is provided with a positioning groove, and a positioning block can be placed in the positioning groove;

[0018] The positioning block can be located within the notch of the collar.

[0019] Optionally, there are at least two collars, the inner diameter of both collars is equal to the outer diameter of the support wheel, and the outer diameter of one collar is larger than the outer diameter of the other collar.

[0020] Optionally, there are at least two collars, one of which has an inner diameter equal to the outer diameter of the support wheel, and the other has an outer diameter equal to the inner diameter of the collar.

[0021] Optionally, the middle part of the support rod is rotatably mounted on a support shaft, the support shaft is slidably mounted on the pressure rod, and a limiting structure is provided between the support shaft and the pressure rod.

[0022] Optionally, the pressure rod is provided with a first groove along its length, the support shaft is provided with a through hole in the middle, and the outer diameter of the support shaft is larger than the width of the first groove;

[0023] The limiting structure includes:

[0024] The first bolt passes through the through hole on the support shaft and the first groove on the pressure rod. One end of the first bolt has a hexagonal head structure, and the hexagonal head and the support shaft are located on opposite sides of the pressure rod, respectively.

[0025] The first nut is fitted onto the first bolt, and the first nut contacts the end of the support shaft.

[0026] Optionally, a second groove is provided on the working surface, the positioning wheel is slidably disposed in the second groove, and a positioning structure is provided between the positioning wheel and the second groove.

[0027] Optionally, the second slide groove extends through the operating table, and the positioning structure includes:

[0028] A second bolt is provided on the positioning wheel, and the second bolt passes through the second sliding groove;

[0029] The second nut is fitted onto the second bolt and is located at the bottom of the operating table.

[0030] Optionally, the positioning wheel is rotatably connected to the second bolt.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] During operation, place the pipe between the positioning wheel and the support wheel, and press the two pressure rollers on the side of the pipe. Then, manually drive the pressure rod to rotate around the axis of the support wheel, so that the two pressure rollers apply pressure to two points on the pipe at the same time, so that the stress points on the side of the pipe are distributed, thereby avoiding the problem of dead bends or wrinkles and protecting the physical properties of the pipe from being damaged. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0036] Figure 3 This is a cross-sectional view of the positioning and limiting structures. Detailed Implementation

[0037] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] Example:

[0042] See Figure 1 and Figure 2 This embodiment discloses a manual pipe bending device, including an operating platform 10, a support wheel 20, a pressure rod 30, a support rod 40, a pressure roller 50, and a positioning roller 60. The support wheel 20 is mounted on the operating platform 10, the pressure rod 30 is rotatably mounted on the support wheel 20, the support rod 40 is rotatably mounted on the pressure rod 30, the pressure roller 50 is mounted on the support rod 40, and the positioning roller 60 is mounted on the operating platform 10. By setting two pressure rollers 50, the stress points on the side of the pipe are distributed, thereby avoiding the problem of sharp bends or wrinkles and protecting the physical properties of the pipe from damage.

[0043] Specifically, the top surface of the operating table 10 is a planar structure and is the main working surface 11. Support wheels 20 are fixedly mounted on the working surface 11, and the axis of the support wheels 20 is perpendicular to the working surface 11.

[0044] One end of the pressure rod 30 is rotatably mounted on the end of the support wheel 20 away from the working surface 11, and the rotation axis of the pressure rod 30 coincides with the axis of the support wheel 20. The other end of the pressure rod 30 is provided with a handle 31.

[0045] The middle part of the support rod 40 is rotatably connected to the middle part of the pressure rod 30, and the rotation axis of the support rod 40 is parallel to the rotation axis of the pressure rod 30.

[0046] A pressure roller 50 is provided at each end of the support rod 40. The two pressure rollers 50 can slide on the working surface 11, and the axes of the two pressure rollers 50 are parallel to each other. At the same time, the axis of the pressure roller 50 is parallel to the axis of the support roller 20. The wheel surface of the pressure roller 50 and the wheel surface of the support roller 20 are generally kept separate, but they can also come into contact when the support rod 40 rotates.

[0047] The positioning wheel 60 is set on the working surface 11, and a gap is maintained between the wheel surface of the positioning wheel 60 and the wheel surface of the support wheel 20.

[0048] During operation, place the pipe between the positioning wheel 60 and the support wheel 20, and press the two pressure rollers 50 on the side of the pipe. Then, manually drive the pressure rod 30 to rotate around the axis of the support wheel 20, so that the two pressure rollers 50 apply pressure to two points on the pipe at the same time, so that the stress points on the side of the pipe are distributed, thereby avoiding the problem of dead bends or wrinkles and protecting the physical properties of the pipe from being damaged.

[0049] In one specific embodiment:

[0050] The manual pipe bending device also includes several collars 70, which can be fitted onto the support wheel 20 to enlarge the outer diameter of the support wheel 20.

[0051] In addition, the middle part of the support rod 40 is slidably mounted on the pressure rod 30, so that the support rod 40 can move along the length of the pressure rod 30 and rotate on the pressure rod 30. At the same time, the positioning wheel 60 is also movably mounted on the working surface 11.

[0052] In this embodiment, the outer diameter of the support wheel 20 is changed by the collar 70, and the positions of the support rod 40 and pressure roller 50 are adjusted accordingly, as well as the position of the positioning wheel 60 is adjusted synchronously, thereby enabling the processing of pipes with different bending radii as required. Furthermore, since the positions of the support rod 40 and the positioning wheel 60 relative to the support wheel 20 are both adjustable, this device is also suitable for processing pipes of different diameters.

[0053] Preferably, the collar 70 has a C-shaped structure, and the opening width of the collar 70 is greater than the width of the pressure rod 30, so that the collar 70 can span the pressure rod 30 and be fitted onto the support wheel 20.

[0054] In addition, a positioning groove 12 is provided on the working surface 11, and a positioning block 13 is placed in the positioning groove 12. The positioning groove 12 and the positioning block 13 have the same width, both smaller than the opening width of the collar 70. When the positioning block 13 is placed in the positioning groove 12 and the collar 70 is rotated, the positioning block 13 can be positioned in the notch of the collar 70.

[0055] By setting the positioning block 13, the position of the collar 70 is limited, preventing the collar 70 from rotating on the support wheel 20. By setting the positioning groove 12, the position of the positioning block 13 is limited, preventing the positioning block 13 from sliding on the working surface 11.

[0056] Generally, the positioning groove 12 and the positioning block 13 are located on the working surface 11 away from the pressure roller 50, so as to avoid conflict with the pipe when processing the pipe bend.

[0057] In a preferred embodiment, at least two collars 70 are provided, all with an inner diameter equal to the outer diameter of the support wheel 20, and all collars 70 are arranged in an increasing order of their outer diameters. The corresponding outer diameter is marked on each collar 70 for easy selection. In use, a collar 70 with the appropriate diameter is simply selected and installed on the support wheel 20.

[0058] Alternatively, all collars 70 can have the same width and an increasing inner diameter. For example, the inner diameter of one collar 70 can be equal to the diameter of the support wheel 20, and the outer diameter can be equal to the inner diameter of another collar 70. In use, as needed, several collars 70 can be fitted onto the support wheel 20.

[0059] In another specific embodiment:

[0060] See Figure 3 The middle part of the support rod 40 is rotatably mounted on a support shaft 41. Generally, a bearing is provided between the support shaft 41 and the support rod 40. The support shaft 41 is slidably mounted on the pressure rod 30, and a limiting structure is provided between the support shaft 41 and the pressure rod 30.

[0061] Specifically, the pressure rod 30 is provided with a first groove 32 along its length direction, and the support shaft 41 is provided with a through hole in the middle. The outer diameter of the support shaft 41 is larger than the width of the first groove 32, so that one end of the support shaft 41 is located on the top surface of the pressure rod 30.

[0062] The limiting structure includes a first bolt 42 and a first nut 43. The first bolt 42 passes through a through hole in the support shaft 41 and a first groove 32 in the pressure rod 30. One end of the first bolt 42 has a hexagonal head 44, and this hexagonal head 44 and the support shaft 41 are located on opposite sides of the pressure rod 30. The first nut 43 is fitted onto the first bolt 42 and contacts the end of the support shaft 41.

[0063] In use, by tightening the first nut 43, the hexagonal head 44 at the end of the first bolt 42 is pressed against the bottom surface of the pressure rod 30, thereby restricting the position of the support shaft 41 and fixing the position of the pressure roller 50.

[0064] In another specific embodiment:

[0065] See Figure 3 The working surface 11 is provided with a second slide groove 14, which passes through the operating table 10. The positioning wheel 60 is slidably disposed in the second slide groove 14, and a positioning structure is provided between the positioning wheel 60 and the second slide groove 14.

[0066] Specifically, the positioning structure includes a second bolt 61 and a second nut 62. The second bolt 61 is located on the positioning wheel 60 and passes through the second slide groove 14. The second nut 62 is fitted onto the second bolt 61 and is located at the bottom of the operating table 10.

[0067] During operation, by rotating the second nut 62, the second nut 62 and the positioning wheel 60 clamp the operating table 10, thereby fixing the position of the positioning wheel 60.

[0068] Preferably, the positioning wheel 60 and the second bolt 61 are rotatably connected, so that during the pipe bending operation, the small movement of the outer wall material of the pipe can make the positioning wheel 60 rotate, thereby avoiding relative sliding between the outer wall of the pipe and the positioning wheel 60, which would cause wear on the outer wall of the pipe.

[0069] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A manual pipe bending device, characterized in that, include: The control panel has a flat working surface on its top surface. The support wheel has a circular structure and is fixedly mounted on the working surface; A pressure rod is rotatably mounted on the support wheel at one end, and the axis of rotation of the pressure rod is collinear with the axis of the support wheel; The support rod, the middle part of which is rotatably connected to the middle part of the pressure rod; Two pressure rollers are respectively rotatably mounted at both ends of the support rod; A positioning wheel is provided on the working surface, and there is a gap between the positioning wheel and the wheel surface of the support wheel.

2. The manual pipe bending device according to claim 1, characterized in that, Also includes: Several rings can be fitted onto the support wheel; The support rod is slidably mounted on the pressure rod, and the positioning wheel is movably mounted on the working surface.

3. The manual pipe bending device according to claim 2, characterized in that: The collar has a C-shaped structure; The working surface is provided with a positioning groove, and a positioning block can be placed in the positioning groove; The positioning block can be located within the notch of the collar.

4. The manual pipe bending device according to claim 3, characterized in that, The collar is at least two in number, and the inner diameter of both collars is equal to the outer diameter of the support wheel, wherein the outer diameter of one collar is greater than the outer diameter of the other collar.

5. The manual pipe bending device according to claim 3, characterized in that, The collar is at least two in number, wherein the inner diameter of one collar is equal to the outer diameter of the support wheel, and the outer diameter is equal to the inner diameter of the other collar.

6. The manual pipe bending device according to claim 4 or 5, characterized in that, The middle part of the support rod is rotatably mounted on a support shaft, the support shaft is slidably mounted on the pressure rod, and a limiting structure is provided between the support shaft and the pressure rod.

7. The manual pipe bending device according to claim 6, characterized in that: The pressure rod is provided with a first sliding groove along its length, and the support shaft is provided with a through hole in the middle, and the outer diameter of the support shaft is greater than the width of the first sliding groove; The limiting structure includes: The first bolt passes through the through hole on the support shaft and the first groove on the pressure rod. One end of the first bolt has a hexagonal head structure, and the hexagonal head and the support shaft are located on opposite sides of the pressure rod, respectively. The first nut is fitted onto the first bolt, and the first nut contacts the end of the support shaft.

8. The manual pipe bending device according to claim 4 or 5, characterized in that, The working surface is provided with a second sliding groove, the positioning wheel is slidably disposed in the second sliding groove, and a positioning structure is provided between the positioning wheel and the second sliding groove.

9. The manual pipe bending device according to claim 8, characterized in that: The second slide groove passes through the operating table, and the positioning structure includes: A second bolt is provided on the positioning wheel, and the second bolt passes through the second sliding groove; The second nut is fitted onto the second bolt and is located at the bottom of the operating table.

10. The manual pipe bending device according to claim 9, characterized in that, The positioning wheel is rotatably connected to the second bolt.

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