A small pipe bending device

Abstract

This utility model discloses a small pipe bending device, comprising: a housing, characterized in that: one end of the housing is provided with a roller, the roller is provided with a positioning groove, and a bending mechanism is provided on one side of the roller. The bending mechanism includes: a base, and a drive wheel is provided on the base; the drive wheel includes: a fixed sleeve, the upper part of the fixed sleeve is provided with an arc-shaped guide groove corresponding to the positioning groove, the diameter of the arc-shaped guide groove matches that of the positioning groove, a connecting frame is provided on the arc-shaped guide groove, a rotating shaft is provided on the connecting frame, a bracket is provided on the base, the two ends of the rotating shaft are rotatably connected to the bracket, and a rocker arm is provided on the connecting frame. This utility model has a simple structure, is easy to operate, can bend pipes at a fixed angle, and can adjust the bending size to adapt to pipes of different specifications.

Description

Technical Field

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

[0002] Currently, in the steel structure and non-standard manufacturing fields, steel pipe bending is mainly solved by purchasing pre-made elbows and welding them to the pipes. Commonly available elbows on the market are mainly available in three standard angles: 45 degrees, 90 degrees, and 180 degrees. These angles are relatively limited. For pipes with other bending angles, such as 70 degrees, pre-made elbows are not available. The conventional approach is to use standard-angle elbows and cut them to create the bends, which is not only wasteful of materials but also difficult to control the angle. After welding, the joints are not smooth and have a poor appearance. For pipes requiring pressure testing, reducing the number of welded joints cannot improve the success rate of the test, and since the joints are all located at the pipe bends, the pipes are more prone to leakage. While some pipe bending machines are available on the market, they are complex in structure, expensive, have a narrow application range, and a high failure rate, making them difficult to promote. To solve the above problems, a small pipe bending device is proposed. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems by providing a small pipe bending device.

[0004] The specific solution of this utility model is as follows: a small pipe bending device, comprising: a housing, a roller at one end of the housing, the roller being rotatably connected to the housing, a positioning groove on the roller having an arc cross-section, a bending mechanism on one side of the roller, the bending mechanism comprising: a base, the base being disposed on the housing, a drive wheel on the base; the drive wheel comprising: a fixing sleeve, the fixing sleeve being a circular sleeve, an arc-shaped guide groove corresponding to the positioning groove on the upper part of the fixing sleeve having a circular cross-section, the arc-shaped guide groove matching the diameter of the positioning groove, a connecting frame on the arc-shaped guide groove, a rotating shaft on the connecting frame, a support on the base, the two ends of the rotating shaft being rotatably connected to the support, and a rocker arm on the connecting frame.

[0005] Furthermore, the housing is provided with a sliding groove, the base is provided with a slider, the base is slidably connected to the sliding groove, the housing is provided with a drive screw, the drive screw is threadedly connected to the slider, the two ends of the drive screw are rotatably connected to the housing, and one end of the housing is provided with a drive motor, the drive motor is fixedly connected to the drive screw.

[0006] Furthermore, the center of the cross-section of the arc-shaped guide groove can be concentric with the cross-section of the positioning groove.

[0007] Furthermore, the roller has upright plates at both ends, which are fixedly connected to the housing, and a rotating shaft is provided in the middle of the roller, which is rotatably connected to the upright plates.

[0008] Furthermore, the housing below the roller is provided with a clearance groove, and the lower part of the roller extends into the clearance groove.

[0009] Furthermore, a locking bolt is provided on the outer circumference of the fixed sleeve, and the locking bolt passes through the fixed sleeve and is threadedly connected to it.

[0010] This utility model has the following beneficial effects:

[0011] 1. Flexible bending of non-standard angles, saving materials: Traditional methods require cutting standard elbows when dealing with non-standard angle pipe bending requirements (such as 70 degrees), resulting in material waste. This utility model, through the cooperation of the positioning groove on the roller and the arc-shaped guide groove on the drive wheel, can flexibly achieve pipe bending at different angles without the need for cutting standard elbows, effectively saving materials and reducing production costs.

[0012] 2. Improved Bending Quality: Standard elbows are often cut to create non-standard angle elbows, resulting in uneven transitions at the welded joints. This device, through its precise positioning groove and arc-shaped guide groove design, ensures uniform stress distribution on the pipe during bending, resulting in smooth transitions at the pipe joints after bending, effectively improving the quality and appearance of the pipe bending process.

[0013] 3. Improved Pressure Testing Success Rate: For pipelines requiring pressure testing, traditional methods are prone to leakage due to numerous joints located at bends, making it difficult to improve the success rate by reducing the number of welded joints. This invention reduces the number of welded joints and avoids concentrating joints at pipeline bends, thereby reducing the risk of leakage and improving the success rate of pipeline pressure testing.

[0014] 4. Simple structure, low cost, and strong applicability: Existing pipe bending machines on the market suffer from complex structures, high costs, narrow applicability, and high failure rates. This utility model features a simple structural design, achieving pipe bending through the rational coordination of components such as rollers, drive wheels, and a base. The drive screw and drive motor facilitate adjustment of the base position, adapting to the bending needs of pipes with different diameters and having a wide range of applications. Simultaneously, the simple structure reduces manufacturing costs and failure rates, making it easier to promote and apply.

[0015] 5. Easy to operate and adjust: The rocker arm on the connecting frame allows the operator to manually drive the drive wheel to rotate, thus achieving pipe bending; the drive motor and drive screw work together to accurately and conveniently adjust the position of the base, thereby adjusting the relative position of the drive wheel and roller to adapt to the bending operations of pipes of different specifications. The operation is convenient and quick, improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the main view of this utility model;

[0018] Figure 3 This is a schematic diagram of the left side of this utility model;

[0019] Figure 4 This is a top view of the present invention;

[0020] Figure 5 for Figure 4 AA sectional view;

[0021] In the diagram: 1. Housing; 2. Roller; 201. Positioning groove; 202. Rotating shaft; 203. Vertical plate; 204. Clearance groove; 3. Pipe bending mechanism; 301. Base; 302. Fixing sleeve; 303. Arc-shaped guide groove; 304. Connecting frame; 305. Rotating shaft; 306. Bracket; 307. Rocker arm; 308. Locking bolt; 4. Slide groove; 5. Drive motor; 6. Drive screw; 7. Slider. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] See details Figures 1-5 A small pipe bending device includes: a housing 1, with a roller 2 at one end of the housing 1, the roller 2 being rotatably connected to the housing 1, a positioning groove 201 on the roller 2 having a circular arc cross-section, and a pipe bending mechanism 3 on one side of the roller 2. The pipe bending mechanism 3 includes: a base 301, the base 301 being disposed on the housing 1, and a drive wheel on the base 301; the drive wheel includes: a fixing sleeve 302, the fixing sleeve 302 being circular. The sleeve has an upper part of the fixed sleeve 302 with an arc-shaped guide groove 303 corresponding to the positioning groove 201. The arc-shaped guide groove 303 has a circular cross section and the diameter of the arc-shaped guide groove 303 matches that of the positioning groove 201. A connecting frame 304 is provided on the arc-shaped guide groove 303. A rotating shaft 305 is provided on the connecting frame 304. A bracket 306 is provided on the base 301. The two ends of the rotating shaft 305 are rotatably connected to the bracket 306. A rocker arm 307 is provided on the connecting frame 304.

[0026] In this embodiment, the housing 1 is provided with a sliding groove 4, the base 301 is provided with a slider 7, the base 301 is slidably connected to the sliding groove 4, the housing 1 is provided with a drive screw 6, the drive screw 6 is threadedly connected to the slider 7, the two ends of the drive screw 6 are rotatably connected to the housing 1, and one end of the housing 1 is provided with a drive motor 5, the drive motor 5 is fixedly connected to the drive screw 6.

[0027] In this embodiment, the center of the cross-section of the arc-shaped guide groove 303 is concentric with the cross-section of the positioning groove 201.

[0028] In this embodiment, the roller 2 has upright plates 203 at both ends, which are fixedly connected to the housing 1. A rotating shaft 202 is located in the middle of the roller 2, and the rotating shaft 202 is rotatably connected to the upright plates 203. In this embodiment, a clearance groove 204 is provided on the housing 1 below the roller 2, and the lower part of the roller 2 extends into the clearance groove 204.

[0029] In this embodiment, a locking bolt 308 is provided on the outer circumference of the fixing sleeve 302, and the locking bolt 308 passes through the fixing sleeve 302 and is threadedly connected to it.

[0030] This utility model has the following beneficial effects:

[0031] 1. Flexible bending of non-standard angles, saving materials: Traditional methods require cutting standard elbows when dealing with non-standard angle pipe bending requirements (such as 70 degrees), resulting in material waste. This utility model, through the cooperation of the positioning groove 201 on the roller 2 and the arc-shaped guide groove 303 on the drive wheel, can flexibly achieve pipe bending at different angles without the need for cutting standard elbows, effectively saving materials and reducing production costs.

[0032] 2. Improved Bending Quality: Non-standard angle elbows are often cut from standard elbows, resulting in uneven transitions at the welded joints. This device, with its precise positioning groove 201 and arc-shaped guide groove 303 design, ensures uniform stress on the pipe during bending, resulting in smooth transitions at the pipe joints after bending, effectively improving the quality and appearance of the pipe bending.

[0033] 3. Improved Pressure Testing Success Rate: For pipelines requiring pressure testing, traditional methods are prone to leakage due to numerous joints located at bends, making it difficult to improve the success rate by reducing the number of welded joints. This invention reduces the number of welded joints and avoids concentrating joints at pipeline bends, thereby reducing the risk of leakage and improving the success rate of pipeline pressure testing.

[0034] 4. Simple structure, low cost, and strong applicability: Existing pipe bending machines on the market suffer from complex structures, high costs, narrow applicability, and high failure rates. This utility model features a simple structural design, achieving pipe bending through the reasonable cooperation of components such as rollers 2, drive wheels, and base 301. The arrangement of the drive screw 6 and drive motor 5 facilitates adjustment of the base 301 position, adapting to the bending needs of pipes with different diameters and having a wide range of applications. At the same time, the simple structure reduces manufacturing costs and failure rates, making it easier to promote and apply.

[0035] 5. Convenient operation and easy adjustment: The rocker arm 307 on the connecting frame 304 allows the operator to manually drive the drive wheel to rotate, thus achieving pipe bending; the drive motor 5 and the drive screw 6 work together to accurately and conveniently adjust the position of the base 301, thereby adjusting the relative position of the drive wheel and the roller 2 to adapt to the bending operation of pipes of different specifications. The operation is convenient and quick, improving work efficiency.

Claims

1. A small pipe bending device, comprising: a housing, characterized in that: One end of the housing is provided with a roller, which is rotatably connected to the housing. The roller has a positioning groove with an arc cross-section. A tube bending mechanism is provided on one side of the roller. The tube bending mechanism includes: a base, which is disposed on the housing, and a drive wheel on the base; the drive wheel includes: a fixing sleeve, which is a circular sleeve. The upper part of the fixing sleeve has an arc-shaped guide groove corresponding to the positioning groove. The arc-shaped guide groove has a circular cross-section and its diameter matches that of the positioning groove. A connecting frame is provided on the arc-shaped guide groove. A rotating shaft is provided on the connecting frame. A bracket is provided on the base. Both ends of the rotating shaft are rotatably connected to the bracket. A rocker arm is provided on the connecting frame.

2. The small pipe bending device according to claim 1, characterized in that: The housing is provided with a sliding groove, the base is provided with a slider, the base is slidably connected to the sliding groove, the housing is provided with a drive screw, the drive screw is threadedly connected to the slider, the two ends of the drive screw are rotatably connected to the housing, and one end of the housing is provided with a drive motor, the drive motor is fixedly connected to the drive screw.

3. A small pipe bending device according to claim 1, characterized in that: The center of the cross-section of the arc-shaped guide groove is concentric with the cross-section of the positioning groove.

4. A small pipe bending device according to claim 1, characterized in that: The roller has upright plates at both ends, which are fixedly connected to the housing. The roller has a rotating shaft in the middle, which is rotatably connected to the upright plates.

5. A small pipe bending device according to claim 1, characterized in that: The housing below the roller is provided with a clearance groove, and the lower part of the roller extends into the clearance groove.

6. A small pipe bending device according to claim 1, characterized in that: The outer circumference of the fixed sleeve is provided with a locking bolt, which passes through the fixed sleeve and is threadedly connected to it.

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