Pipe bending machine

Abstract

The utility model discloses a pipe bending machine which comprises a fixed die wheel and a pipe groove formed in the edge of the fixed die wheel. The rotating arm assembly rotates in the extending direction of the pipe groove and is used for gradually pressing the pipe into the pipe groove to be bent; the angle presetting assembly comprises a dial, an angle triggering sheet and an angle switch; wherein the dial is shifted to a preset angle, the angle switch can be placed at a final position of a stroke required to rotate when the rotating arm assembly reaches the preset angle, the angle trigger sheet and the rotating arm assembly rotate synchronously, and the angle trigger sheet is rotated to the final position of the preset stroke. The angle triggering piece abuts against the angle switch so that the rotating arm assembly can stop rotating. The pipe bending machine has the advantages that the bending angle of the pipe bending machine can be preset through the arranged angle presetting assembly; and secondly, the same pipe with different radiuses can be bent by replacing the fixed die wheels with different bending radiuses.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe processing equipment, and in particular to a pipe bending machine with preset angle and multi-diameter adaptability. Background Technology

[0002] In the field of pipe processing, pipe bending machines are the core equipment for pipe forming and processing. Traditional equipment requires changing the bending modules of different specifications to adapt to bending operations with different pipe diameters and bending radii. At the same time, the traditional pipe bending process mainly relies on the operator's experience to control the bending angle, resulting in significant accuracy deviations. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pipe bending machine that can adapt to different bending radii, different pipe diameters and preset angles, solving the problems of low precision of manual angle control, cumbersome mold replacement and poor pipe diameter adaptability of existing equipment.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pipe bending machine, including a fixed mold wheel and a pipe groove disposed on the edge of the fixed mold wheel; a rotating arm assembly, rotating around the extension direction of the pipe groove, used to gradually press the pipe into the pipe groove for bending; an angle preset assembly, including a dial, an angle trigger plate, and an angle switch; wherein by moving the dial to a preset angle, the angle switch can be placed at the end position of the stroke required for the rotating arm assembly to reach the preset angle, the angle trigger plate rotates synchronously with the rotating arm assembly, and when the rotating arm assembly rotates to the end position of the preset stroke, the rotating arm assembly stops rotating by the angle trigger plate abutting against the angle switch.

[0005] Preferably, the angle preset component further includes a zero-position switch and a zero-position trigger post; the zero-position trigger post is disposed on the rotating arm assembly, and the rotating arm assembly can be positioned at the initial zero position by the zero-position trigger post abutting against the zero-position switch.

[0006] Preferably, the rotating arm assembly includes an adjusting arm, a pressing roller, and a rolling bracket; the adjusting arm is connected to the transmission output shaft and rotates along the extension direction of the tube groove; the rolling bracket is fixedly connected to the adjusting arm; the pressing roller is rotatably disposed within the rolling bracket; the pressing roller abuts against and presses the tube, thereby gradually pressing the tube into the tube groove for bending.

[0007] Preferably, the rotating arm assembly further includes positioning holes and positioning knobs; at least two positioning holes are provided on the adjusting arm, and the rolling bracket is fixed to different positioning holes via the positioning knobs.

[0008] Preferably, a locking bracket assembly is included, disposed on the side of the fixed mold wheel, the locking bracket assembly being used to lock the starting end of the tube within the tube groove.

[0009] Preferably, the locking bracket assembly further includes a locking block, a support block, and a locking knob; the support block is fixedly connected to the fixed mold wheel, the locking block is slidably disposed within the support block, one end of the locking block abuts against the tube, and the other end is connected to the locking knob, the locking knob being used to drive the locking block to move within the support block.

[0010] Preferably, the fixed mold wheel further includes a wheel disc and a fixing knob; the wheel discs with different bending radii are installed via the fixing knob.

[0011] Preferably, the angle preset component further includes a track groove and teeth; the angle trigger piece moves within the track groove, and the teeth are disposed on the outer edge of the dial.

[0012] Preferably, the device includes a body, which includes a housing, a handheld part, and a front handle; the housing has a mounting cavity, the handheld part and the front handle are both located above the body, and the front handle is located in front of the handheld part.

[0013] Preferably, the system includes a power assembly comprising a brushless motor, a bending button, a return button, a start button, a power supply, and a planetary gear reducer. The rotating arm assembly is connected to the output shaft of the brushless motor. The bending button is used to drive the brushless motor to perform bending output. The return button is used to drive the brushless motor to return after bending and rotating. The start button is used to energize the brushless motor and the power supply.

[0014] The beneficial effects of this utility model are as follows: First, the bending angle of the pipe bending machine can be preset by setting the angle preset component; second, pipes of different radii can be bent by changing the fixed mold wheels with different bending radii; third, pipes of different diameters can be locked by setting the locking bracket component, and the unified interface can be installed on the fixed mold wheel without tools, which is simple and applicable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the pipe bending machine of this utility model at the zero position;

[0016] Figure 2 This is a schematic diagram of the zero-position switch in the pipe bending machine described in this utility model;

[0017] Figure 3 This is a schematic diagram of the angle switch in the pipe bending machine described in this utility model;

[0018] Figure 4 This is a schematic diagram of the scale plate in the pipe bending machine described in this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the pipe bending machine described in this utility model;

[0020] Figure 6 This is a schematic diagram of the overall structure of the pipe bending machine described in this utility model at the 90-degree bending position. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0022] Example 1

[0023] Reference Figure 1-6 The illustration provides an efficient, safe, lightweight, and versatile pipe bending tool for pipe bending processes. To achieve preset bending angles, this embodiment proposes a pipe bending machine, including a fixed die wheel 100, a rotating arm assembly 200, and an angle preset assembly 300. The fixed die wheel 100 is used for fixing and supporting the pipe S during bending. The rotating arm assembly 200 is used to bend the pipe S fixed on the fixed die wheel 100. The angle preset assembly 300 is used to control the rotation angle of the rotating arm assembly 200, which corresponds to controlling the bending angle of the pipe S.

[0024] Specifically, the fixed mold wheel 100 includes a tube groove 101 disposed on the edge of the fixed mold wheel 100, which is a tube forming mold; the rotating arm assembly 200 rotates around the extension direction of the tube groove 101 to gradually press the tube S into the tube groove 101 for bending; the angle preset assembly 300 includes a dial 301, an angle trigger plate 302 and an angle switch 303.

[0025] By toggling the dial 301 to a preset angle, the angle switch 303 can be positioned at the end of the stroke required for the rotating arm assembly 200 to reach the preset angle. The angle trigger plate 302 rotates synchronously with the rotating arm assembly 200. When the rotating arm assembly 200 rotates to the preset stroke end position, the angle trigger plate 302 abuts against the angle switch 303 to stop the rotation of the rotating arm assembly 200.

[0026] Furthermore, to achieve the positioning of the zero position, the angle preset component 300 also includes a zero position switch 304 and a zero position trigger post 305; the zero position trigger post 305 is disposed on the rotating arm assembly 200, and the rotating arm assembly 200 can be positioned at the starting zero position by the zero position trigger post 305 abutting against the zero position switch 304.

[0027] It should be noted that the angle setting of the dial 301 corresponds to the rotation angle of the rotating arm assembly 200, which is also the synchronous rotation angle of the angle trigger plate 302. Therefore, the angle trigger plate 302 rotates 90 degrees from the starting position as a preset working stroke. The angle switch 303 is set at the end position of the working stroke. That is, when the angle trigger plate 302 rotates 90 degrees and reaches the end position, it abuts the angle switch 303. At this time, the angle switch 303 receives the touch signal, so the rotating arm assembly 200 stops rotating, realizing the preset control of the angle. Of course, it is easy to understand that the correspondence between the rotation angle and the stroke is displayed intuitively through the scale of the dial 301.

[0028] Refer again Figure 1 The illustration shows, for example, in the initial state, the rotating arm assembly 200 is in the zero position. In this state, the zero-position trigger pin 305 abuts against the zero-position switch 304, moving the dial 301 to the 90-degree position of the pointer, i.e., the preset bending angle of the tube S is 90 degrees. The positioning pin is inserted to lock the dial 301 at the 90-degree position. At this time, the angle trigger plate 302 is located at the end position of the stroke where the rotating arm assembly 200 will rotate 90 degrees. The tube bending machine is started, and the process is repeated as shown in the diagram. Figure 6 As illustrated, the rotating arm assembly 200 rotates from the zero starting position to the 90-degree position, that is, the stroke is completed. The angle trigger plate 302 abuts against the angle switch 303, and at this time the angle switch 303 receives the touch signal, and the rotating arm assembly 200 stops rotating, realizing the preset angle of tube S bending.

[0029] Example 2

[0030] In this embodiment, the tube S is fixed at the starting position of the fixed mold wheel 100 and the bending radius of the rotating arm assembly 200 is adjustable. The rotating arm assembly 200 includes an adjusting arm 201, a pressing roller 202, a rolling bracket 203, a positioning hole 204, and a positioning knob 205. It is easy to understand that the rotation of the rotating arm assembly 200 in the above embodiment is the same as the rotation of the adjusting arm 201 in this embodiment. When the adjusting arm 201 is at the zero position, it is in a horizontal position and can rotate at an angle of 0-180 degrees.

[0031] Specifically, the adjusting arm 201 is connected to the transmission output shaft and rotates along the extension direction of the tube groove 101. The rolling bracket 203 is disposed on the side of the adjusting arm 201 and fixedly connected. The pressing roller 202 is rolled inside the rolling bracket 203. When the adjusting arm 201 rotates under the transmission action of the output shaft, the pressing roller 202 rotates along the edge of the tube groove 101. The pressing roller 202 abuts against the pressing tube S, gradually pressing the tube S into the tube groove 101 and bending it. This is the rolling pressing process. Similarly, rolling can be avoided and friction pressing can be used. In this embodiment, rolling pressing is used to reduce friction energy consumption.

[0032] Therefore, the extension trajectory of the tube groove 101 of the fixed mold wheel 100 is the bending angle of the tube S. The fixed mold wheel 100 also includes a wheel 102 and a fixed knob 103. Wheels 102 with different bending radii are installed through the fixed knob 103 to adjust the bending radius. This is suitable for the needs of different bending radii of the same material, improving applicability while being convenient and quick.

[0033] Because of the fixed mold wheel 100, the pressure roller 202 needs to contact the pressure tube S, and the distance between the pressure roller 202 and the wheel 102 needs to be adjusted accordingly.

[0034] Furthermore, at least two positioning holes 204 are provided on the adjusting arm 201, and the rolling bracket 203 is fixed to different positioning holes 204 by positioning knob 205. When adjusting the wheel 102, it is only necessary to find the positioning hole 204 corresponding to the specific wheel 102 and adjust the adjusting arm 201 to be installed on the corresponding positioning hole 204 to achieve adaptation.

[0035] In this embodiment, to fix the starting end of the pipe S, which is located at the zero position, on the pipe groove 101, the pipe bending machine is also equipped with a locking bracket assembly 400, which is located on the side of the fixed mold wheel 100. The locking bracket assembly 400 is used to lock the starting end of the pipe S in the pipe groove 101.

[0036] Specifically, the locking bracket assembly 400 also includes a locking block 401, a support block 402, and a locking knob 403; the support block 402 is fixedly connected to the fixed mold wheel 100, and the locking block 401 is slidably disposed in the support block 402. One end of the locking block 401 abuts against the tube S, and the other end is connected to the locking knob 403. The locking knob 403 is used to drive the movement of the locking block 401 within the support block 202. It adopts a screw structure. By rotating the locking knob 403 forward and backward, the locking block 401 can squeeze and release the tube S. In this embodiment, the locking block 401 is "V" shaped, which can better lock the tube S.

[0037] Furthermore, to facilitate the movement of the dial 301 and limit the travel of the angle trigger piece 302, the angle preset component 300 also includes a track groove 306 and a tooth 307; the track groove 306 is located on the side of the dial 301, the angle trigger piece 302 moves within the track groove 306, and the tooth 307 is located on the outer edge of the dial 301. The dial 301 can be moved by moving the tooth 307.

[0038] Example 3

[0039] The difference between this embodiment and the above embodiment is that the pipe bending machine also includes a body 500 and a power component 600. The body 500 includes a housing 501, a handheld part 502 and a front handle 503. The power component 600 includes a brushless motor 601, a bending button 602, a return button 603, a start button 604, a power supply 605 and a planetary gear reducer 606.

[0040] Specifically, the housing 501 has a mounting cavity that supports machine components to form a safe whole. Both the handgrip 502 and the front handle 503 are located on top of the machine body 500. The front handle 503 is positioned in front of the handgrip 502. The handgrip 502 is a D-shaped handle covered with soft rubber, providing a comfortable grip, reducing fatigue, and preventing slippage. The front handle 503 is an auxiliary handle for easier handling during operation.

[0041] The rotating arm assembly 200 is connected to the output shaft of the brushless motor 601. The bending button 602 drives the brushless motor 601 to perform bending output. The return button 603 drives the brushless motor 601 to return after bending and rotation. The start button 604 powers the brushless motor 601 and the power supply 605. The power supply 605 is a 12V battery pack, a standard 12V battery pack. The planetary gear reducer 606, also called a gearbox, is a mechanism where multiple planetary gears rotate around a sun gear. It reduces the transmission ratio while proportionally increasing the motor torque. It achieves efficient speed reduction through the planetary gear system, offering advantages such as a high reduction ratio and uniform load distribution. In this embodiment, the adjusting arm 201 is connected to the brushless motor 601 via the planetary gear reducer 606. The brushless motor 601 transmits its output torque to the adjusting arm 201 through the planetary gear reducer 606, thus enabling the rotation of the adjusting arm 201.

[0042] When the bending button 602 is pressed, the brushless motor 601 performs bending output. After bending is completed, the return button 603 is pressed, and then the start button 604 is pressed. The adjusting arm 201 reverses until the zero position trigger post 305 touches the zero position switch 304. At this time, the zero position signal is received, the brushless motor 601 stops rotating, and the adjusting arm 201 is successfully reset.

[0043] Furthermore, in this embodiment, the brushless motor 601 is a 12V brushless pipe bending machine, capable of bending and forming thin-walled pipes of different materials, such as steel pipes, copper pipes, conductive pipes, and multi-layer synthetic pipes. The 12V brushless pipe bending machine is an electrical tool that can perform 180-degree cold bending of pipes. It requires no vise and can be used in any location. It can be used in workshops, on-site operations, and repairs.

[0044] This embodiment also includes a controller, control panel and display components (such as LED indicator lights and power display windows) and a gearbox. The gearbox is used for a dual planetary gear system to achieve high torque transmission and provide clamping power for bending.

[0045] This embodiment includes the following operation process:

[0046] Pipe fixing: Insert pipe S into pipe groove 101 of fixing mold wheel 100, rotate locking knob 403 to drive locking block 401 to clamp pipe;

[0047] Angle preset: Move the dial 301 to the target angle, such as 90°, and the angle switch 303 will move synchronously to the corresponding end point of the stroke;

[0048] Bending start: Press the bending button 602, the brushless motor 601 drives the rotating arm 200 to rotate, and the pressing roller 202 presses the pipe into the pipe groove 101;

[0049] Automatic stop: When the angle trigger plate 302 contacts the angle switch 303, the motor stops, completing the precise bending;

[0050] Reset operation: Press the return button 603, and the rotating arm 200 returns to the zero position by the zero position trigger post 305 contacting the zero position switch 304 for positioning.

[0051] It should be noted that the implementation of the mechanical structure for angle preset of the angle preset component 300 in this application, as well as how the angle switch 303 receives a touch signal to control the motor, the bending button 602 and the return button 603 to control the forward and reverse rotation of the motor, and the motor control after the zero-position trigger post 305 abuts against the zero-position switch 304, etc., belong to the electrical connection and control part of the pipe bending machine. Those skilled in the art can implement these by referring to the prior art. They are implicitly disclosed non-essential technical features and will not be described in detail here.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit the scope of protection of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description and ideas. It is neither necessary nor possible to exhaustively describe all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the technical solution of this utility model should be covered within the scope of protection of the claims of this utility model.

Claims

1. A pipe bender characterized by: The utility model relates to a pipe bending machine, including The fixed mould wheel (100) includes the pipe groove (101) set in the edge of the fixed mould wheel (100); The rotating arm assembly (200) rotates around the extension direction of the pipe groove (101) and is used for gradually pressing the pipe (S) into the pipe groove (101) and bending; The angle preset assembly (300) includes the dial (301), angle trigger piece (302) and angle switch (303), wherein, By dialing the dial (301) to the preset angle, the angle switch (303) can be placed in the end position of the rotating arm assembly (200) required to rotate to the preset angle, the angle trigger piece (302) rotates synchronously with the rotating arm assembly (200), the rotating arm assembly (200) rotates to the preset end position of stroke, and the rotating arm assembly (200) is stopped by the angle trigger piece (302) and the angle switch (303) are touched.

2. The pipe bender of claim 1, wherein: The angle preset assembly (300) further includes zero position switch (304) and zero position trigger column (305); The zero position trigger column (305) is arranged on the rotating arm assembly (200), and the zero position trigger column (305) and the zero position switch (304) are touched to position the rotating arm assembly (200) on the starting zero position.

3. The pipe bender of claim 1, wherein: The rotating arm assembly (200) includes the adjusting arm (201), the compression roller (202) and the rolling support (203); The adjusting arm (201) is connected with the transmission output shaft and rotates along the extension direction of the pipe groove (101), the rolling support (203) is fixedly connected with the adjusting arm (201), the compression roller (202) is arranged in the rolling support (203) and is used for gradually pressing the pipe (S) into the pipe groove (101) and bending.

4. The pipe bender of claim 3, wherein: The rotating arm assembly (200) further includes positioning hole (204) and positioning knob (205); At least two positioning holes (204) are arranged on the adjusting arm (201), and the rolling support (203) is fixed with different positioning holes (204) through the positioning knob (205).

5. The pipe bender of claim 1, wherein: The utility model relates to a pipe bending machine, including 6. The pipe bender of claim 5, wherein: The locking support assembly (400) is arranged on the side of the fixed mould wheel (100), and the locking support assembly (400) is used for locking the starting end of the pipe (S) in the pipe groove (101). The locking support assembly (400) further includes locking block (401), supporting block (402) and locking knob (403); 7. The pipe bender of claim 1, wherein: The supporting block (402) is fixedly connected with the fixed mould wheel (100), the locking block (401) is slidably arranged in the supporting block (402), one end of the locking block (401) is in contact with the pipe (S), the other end is connected with the locking knob (403), and the locking knob (403) is used for driving the locking block (201) to move in the supporting block (202). The fixed mould wheel (100) further includes wheel disc (102) and fixed knob (103). The wheel disc (102) with different bending radius is installed through the fixing knob (103).

8. The pipe bender of claim 1, wherein: The angle preset assembly (300) further comprises a track groove (306) and a tooth (307); The angle trigger piece (302) moves in the track groove (306), and the tooth (307) is arranged on the outer edge of the scale disc (301).

9. The pipe bender of claim 1, wherein: The machine body (500) comprises a shell (501), a hand-held part (502) and a front handle (503). The shell (501) has an installation cavity, the hand-held part (502) and the front handle (503) are arranged above the machine body (500), and the front handle (503) is arranged in front of the hand-held part (502).

10. The pipe bender of claim 1, wherein: The power assembly (600) comprises a brushless motor (601), a bending button (602), a return button (603), a start button (604), a power supply (605) and a planetary gear train reduction box (606). The rotating arm assembly (200) is connected with an output shaft of the brushless motor (601), the bending button (602) is used for driving the brushless motor (601) to bend and output, the return button (603) is used for driving the brushless motor (601) to return after bending and rotating, and the start button (604) is used for power supply between the brushless motor (601) and the power supply (605).

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