Pipe bending device capable of automatically controlling angle

Abstract

The invention discloses an automatic angle control pipe bending device which comprises a base, a working disc is fixed to the base, a strip-shaped first groove is formed in the top of the working disc, two sets of U-shaped clamping plates are arranged in the first groove in a sliding fit mode in the long diameter direction of the first groove, and a center mold of a semicircular ring structure is clamped and fixed between the two U-shaped clamping plates. The center mold and the working disc are concentrically arranged, a vertical plate is fixedly connected to the side of the base, a first motor with the axis concentric with the working disc is fixed to the vertical plate through a motor support, and the output end of the first motor is fixedly connected with the end of a rotating plate of a horizontal plate-shaped structure through a rotating rod. A bending pin shaft of a rod-shaped structure is fixed to the end, away from the rotating rod, of the rotating plate. The base is fixedly connected with a vertical supporting pin shaft beside the working disc; the pipe bending machine has the beneficial effects that steel pipes with different diameters can be bent, the pipe bending angle can be automatically controlled, and limited cutting with the requirement for the length of pipe fittings can be completed.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical pipe bending equipment, and in particular relates to an automatic angle-controlled pipe bending device. Background Art

[0002] The pipe bending device can bend the pipe into a specific shape and angle as needed to adapt to various engineering projects or manufacturing needs. This customized shape of the pipe can better meet the design requirements and improve the quality and performance of the project or product.

[0003] The common manual pipe bender currently available on the market (such as the manual pipe bender with publication number CN102371295A) is usually unable to adaptively adjust the radius of the pipe bend during construction, resulting in a very small applicable range of the pipe bender. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic angle control pipe bending device to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A device for automatically controlling an angle of pipe bending, comprising a base, wherein a working disc is fixed on the base, a first strip-shaped groove is provided on the top of the working disc, two groups of U-shaped clamps are slidably fitted in the first groove along its long diameter direction, a central mold with a semicircular ring structure is clamped and fixed between the two U-shaped clamps, the central mold and the working disc are concentrically arranged, a vertical plate is fixedly connected to the side of the base, a first motor with an axis line concentric with the working disc is fixed on the vertical plate by a motor bracket, the output end of the first motor is fixedly connected to the end of a rotating plate with a horizontal plate-like structure by a rotating rod, a rod-shaped bending pin is fixed to the end of the rotating plate away from the rotating rod, an automatic control box is arranged on the base or the vertical plate, the automatic control box is electrically connected to the control end of the first motor, so as to realize automatic control of the bending angle of the pipe; a vertical supporting pin is fixedly connected to the side of the working disc on the base.

[0007] Further: in order to avoid friction damage to the bending pin and the supporting pin caused by the bent steel pipe, the outer wall of the bending pin is rotatably connected to a first seamless steel sleeve, and the outer wall of the supporting pin is rotatably connected to a second seamless steel sleeve.

[0008] Furthermore: in order to facilitate the cutting of excess steel pipes, a cutting mechanism is provided on the top of the base; the main body of the cutting mechanism is a cutting table, which is horizontally supported by a plurality of second support columns, and a bracket with an L-shaped longitudinal section is fixedly connected to the rear side of the top of the cutting table to form an L-shaped frame, and a second groove is opened inside the L-shaped frame close to the cutting table, and a second motor is fixedly connected to the rear side of the L-shaped frame, and the output end of the second motor passes through the L-shaped frame and is fixedly connected to a concentric threaded rod, and the outer wall of the threaded rod is threadedly connected to a moving block, and the bottom of the moving block is fixedly connected to a fixed column, and the bottom end of the fixed column is rotatably connected to a U-shaped plate, and the internal rotation of the U-shaped plate is matched with a cutting ring knife with rotating power; sliding grooves are opened on the left and right sides of the inside of the second groove, and sliders are fixedly connected to the left and right sides of the moving block, and the two sliders are respectively slidably connected to the corresponding sliding grooves.

[0009] Further: In order to facilitate manual adjustment of the bending angle, two groups of switches are fixedly connected to the working disc or the base, and the two groups of switches are electrically connected to the first motor and the second motor respectively. The automatic control box is not connected in series with the switch but is directly connected to the first motor to realize automatic control of the bending angle. That is to say, the automatic control box and the switch can independently control the rotation of the first motor.

[0010] Furthermore: in order to improve the stability of the motor bracket, an inclined diagonal support rod is fixed to the bottom of the motor bracket and the front side of the vertical plate, and a triangle is formed between the diagonal support rod, the motor bracket and the vertical plate, and the stability of the triangle is used to improve the stability of the motor bracket.

[0011] Furthermore: in order to avoid the establishment of the U-shaped clamp and affect the bending effect of the steel pipe, the working disc is set high by the first support column. At the same time, the top surface of the cutting table is higher than the highest point of the U-shaped clamp, and a placing table with the same height as the top surface of the cutting table is provided on the side of the base.

[0012] Furthermore: in order to facilitate the determination of the bending angle during manual bending, scales for indicating the angle are provided around the top of the working disc.

[0013] Furthermore: in order to increase the bending force of the bending pin, the first motor adopts a low-speed high-torque motor, or a reducer is arranged between the first motor and the rotating rod, and the output power of the first motor is decelerated and then transmitted to the rotating plate by the rotating rod.

[0014] Furthermore: in order to improve the stability of the central mold, a through threaded hole is provided on the side of the U-shaped clamping plate, and a bolt is matched with the inner thread of the threaded hole. Screwing the bolt can fix the central mold clamped in the U-shaped clamping plate.

[0015] Further: a protective cover is arranged on the outer side of the switch, and one side of the protective cover is rotatably connected to the side of the switch.

[0016] Furthermore: in order to prevent the cutting ring from accidentally cutting the cutting table during cutting, a guard plate is embedded in the top of the cutting table, and the top surface of the guard plate is flush with the top surface of the cutting table.

[0017] Furthermore: in order to facilitate manual adjustment of the cutting angle of the cutting ring, a cutting motor is fixedly connected to the side of the U-shaped plate, and the output shaft of the cutting motor and the output shaft of the cutting ring are fixed coaxially.

[0018] In summary, the present invention has the following beneficial effects:

[0019] In the present invention, the steel pipe is bent by driving the bending pin to rotate and extrude with the central die through the rotating plate, and the friction loss when bending the steel pipe is avoided by rotating the seamless steel casing. The distance between the U-shaped clamping plates is moved to adapt to the central die of different sizes, so that steel pipes of different diameters can be bent; and the automatic control box is used to realize automatic control of the bending angle.

[0020] In the present invention, through the establishment of a cutting mechanism, the cutting mechanism can cut steel pipes that are too long or too long. The second motor is controlled by the switch to drive the threaded rod to rotate, and the threaded rod drives the moving block with the thread on it to move back and forth. The cutting ring knife is rotated by power, and at the same time, the U-shaped plate drives the cutting ring knife to move back and forth to cut the steel pipe, thereby completing some limited cutting with requirements on the length of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the cutting mechanism in the present invention;

[0023] Figure 3 It is a schematic diagram of the bending principle of the present invention;

[0024] In the figure, 1, base; 2, cutting mechanism; 201, second support column; 202, cutting table; 203, L-shaped frame; 204, second groove; 205, second motor; 206, threaded rod; 207, moving block; 208, fixed column; 209, U-shaped plate; 210, cutting ring; 3, first support column; 4, working disc; 5, scale; 6, first groove; 7, U-shaped clamping plate; 8, bolt; 9, middle Core mold; 10, vertical plate; 11, motor bracket; 12, first motor; 13, rotating rod; 14, rotating plate; 15, bending pin; 16, first seamless steel casing; 17, supporting pin; 18, second seamless steel casing; 19, switch; 20, protective cover; 21, diagonal support rod; 22, guard plate; 23, slide; 24, slider; 25, cutting motor; 26, automatic control box; 27 material placement table; 28, steel pipe. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] See also Figure 1-Figure 3 , the present invention provides a technical solution:

[0028] A device for automatically controlling an angle of pipe bending comprises a base 1, on which a working disc 4 is fixed, a first strip-shaped groove 6 is provided on the top of the working disc 4, two groups of U-shaped clamps 7 are slidably fitted in the first groove 6 along its long diameter direction, a center mold 9 with a semicircular ring structure is clamped and fixed between the two U-shaped clamps 7, the center mold 9 and the working disc 4 are arranged concentrically, a vertical plate 10 is fixedly connected to the side of the base 1, a first motor 12 whose axis is concentric with the working disc 4 is fixed on the vertical plate 10 by a motor bracket 11, the output end of the first motor 12 is fixedly connected to the end of a rotating plate 14 with a horizontal plate-like structure by a rotating rod 13, a rod-shaped bending pin 15 is fixed to the end of the rotating plate 14 away from the rotating rod 13, an automatic control box 26 is arranged on the base 1 or the vertical plate 10, and the automatic control box 26 is electrically connected to the control end of the first motor 12 to realize automatic control of the bending angle; the base 1 is fixedly connected to a vertical support pin 17 on the side of the working disc 4.

[0029] The outer wall of the bending pin 15 is rotatably connected to a first seamless steel sleeve 16 , and the outer wall of the supporting pin 17 is rotatably connected to a second seamless steel sleeve 18 .

[0030] A cutting mechanism 2 is provided on the top of the base 1; the main body of the cutting mechanism 2 is a cutting table 202, which is horizontally supported by a plurality of second support columns 201, and a bracket with an L-shaped longitudinal section is fixedly connected to the rear side of the top of the cutting table 202 to form an L-shaped frame 203, and a second groove 204 is provided inside the L-shaped frame 203 near the cutting table 202, and a second motor 205 is fixedly connected to the rear side of the L-shaped frame 203, and the output end of the second motor 205 passes through the L-shaped frame 203 and is fixedly connected to a The threaded rod 206 at the center, the outer wall of the threaded rod 206 is threadedly connected to a moving block 207, the bottom of the moving block 207 is fixedly connected to a fixed column 208, the bottom end of the fixed column 208 is rotatably connected to a U-shaped plate 209, and the internal rotation of the U-shaped plate 209 is matched with a cutting ring knife 210 with rotating power; the left and right sides of the interior of the second groove 204 are provided with sliding grooves 23, the left and right sides of the moving block 207 are fixedly connected with sliders 24, and the two sliders 24 are slidably connected to the corresponding sliding grooves 23 respectively.

[0031] Two groups of switches 19 are fixedly connected to the working disc 4 or the base 1, and the two groups of switches 19 are electrically connected to the first motor 12 and the second motor 205 respectively. The automatic control box 26 is not connected in series with the switch 19 but is directly connected to the first motor 12 to realize automatic control of the bending angle, that is, the automatic control box 26 and the switch 19 can independently control the rotation of the first motor 12.

[0032] An inclined diagonal support rod 21 is fixed to the bottom of the motor bracket 11 and the front side of the vertical plate 10, and a triangle is formed between the diagonal support rod 21, the motor bracket 11 and the vertical plate 10, and the stability of the triangle is used to improve the stability of the motor bracket 11.

[0033] The working disc 4 is elevated by the first supporting column 3 , and the top surface of the cutting table 202 is higher than the highest point of the U-shaped clamping plate 7 . A material placing table 27 having a top surface equal to that of the cutting table 202 is provided on the side of the base 1 .

[0034] A scale 5 for indicating angles is arranged around the top of the working disc 4 .

[0035] The first motor 12 is a low-speed high-torque motor, or a reducer is provided between the first motor 12 and the rotating rod 13 , and the output power of the first motor 12 is transmitted to the rotating plate 14 by the rotating rod 13 after being reduced in speed.

[0036] A threaded hole is provided on the side of the U-shaped clamping plate 7 , and a bolt 8 is threadedly fitted in the threaded hole. The central mold 9 clamped in the U-shaped clamping plate 7 can be fixed by tightening the bolt 8 .

[0037] A protective cover 20 is disposed on the outer side of the switch 19 , and one side of the protective cover 20 is rotatably connected to the side of the switch 19 .

[0038] A guard plate 22 is embedded in the top of the cutting table 202 , and the top surface of the guard plate 22 is flush with the top surface of the cutting table 202 .

[0039] A cutting motor 25 is fixedly connected to the side of the U-shaped plate 209 , and an output shaft of the cutting motor 25 and an output shaft of the cutting ring 210 are fixed coaxially.

[0040] Brief description of the usage process:

[0041] When in use, select a suitable central mold 9 according to the required bending radius, clamp the central mold 9 in two sets of U-shaped clamps 7, and then tighten the bolts 8 to clamp and fix the central mold 9. Central molds 9 of different sizes can be clamped by moving the U-shaped clamps 7.

[0042] For example Figure 3 As shown in stage ①, first control the first motor 12 to rotate through the rotating rod 13 and the rotating plate 14 to drive the bending pin 15 to move to a position flush with the supporting pin 17, and then insert the steel pipe 28 into the gap between the central mold 9 and the bending pin 15 and the supporting pin 17, and set the steel pipe 28 on the top surface of the cutting table 202 and the top surface of the material table 27, so that one side of the steel pipe 28 is tangent to the side of the central mold 9 located above the U-shaped clamp.

[0043] For example Figure 3 As shown in stage ②, the first motor 12 is controlled by the switch 19 or the automatic control box 26 to electrically control the operation. The first motor 12 directly or indirectly drives the rotating rod 13 to rotate, and the rotating rod 13 drives the rotating plate 14 to rotate. The bending pin 15 at the bottom of the rotating plate 14 rotates accordingly to deform the steel pipe 28 around the central mold 9. Since the other end of the steel pipe 28 is limited by the supporting pin 17, the steel pipe 28 will be bent around the central mold 9. When the steel pipe 28 is bent by the switch 19, the required bending angle is determined by observing the scale 5. When the steel pipe 28 is bent by the automatic control box 26, the working angle of the first motor 1 is used as the basis for the angle of the bending pipe (the working angle of the first motor 1 and the angle of the bending pipe are consistent with the reduction ratio between the first motor 12 and the rotating rod 13).

[0044] Because when bending the pipe, the bending pin 15 and the supporting pin 17, as the main stress points, have a large friction force with the steel pipe 28, so the first seamless steel sleeve 16 that rotates outside the bending pin 15 and the second seamless steel sleeve 18 that rotates outside the supporting pin 17 will roll relative to the deformed side wall of the steel pipe 28, thereby avoiding damage to the bending pin 15 and the supporting pin 17 due to friction from the steel pipe 28.

[0045] The cutting mechanism 2 can cut the steel pipe 28 that is too long or too long. The switch 19 controls the second motor 205 to drive the threaded rod 206 to rotate, and the threaded rod 206 drives the moving block 207 with the thread on it to move back and forth. The cutting motor 25 is powered on to drive the cutting ring 210 to rotate. At the same time, the U-shaped plate 209 drives the cutting ring 210 to move back and forth to cut the steel pipe 18, which is convenient for the staff to achieve the cutting requirements of the steel pipe 28 of a fixed length; the switch 19 can freely control the operation of the first motor 12 and the second motor 205, the protective cover 20 can prevent the switch 19 from being accidentally touched, and the guard plate 22 can prevent the cutting ring 210 from cutting the cutting table 202 during cutting.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An automatic angle-controlled pipe bending device, comprising a base (1), characterized in that: A working disc (4) is fixed on the base (1); The top of the working disc (4) is provided with a first strip-shaped groove (6), and two groups of U-shaped clamping plates (7) are slidably fitted in the first groove (6) along the long diameter direction thereof, and a center mold (9) with a semicircular ring structure is clamped and fixed between the two U-shaped clamping plates (7), and the center mold (9) and the working disc (4) are arranged concentrically. A vertical plate (10) is fixedly connected to the side of the base (1), and a first motor (12) whose axis is concentric with the working disc (4) is fixed on the vertical plate (10) by a motor bracket (11), and the first The output end of the motor (12) is fixedly connected to the end of a rotating plate (14) with a horizontal plate-like structure by a rotating rod (13); a bending pin (15) with a rod-like structure is fixed to one end of the rotating plate (14) away from the rotating rod (13); an automatic control box (26) is arranged on the base (1) or the vertical plate (10); the automatic control box (26) is electrically connected to the control end of the first motor (12) to realize automatic control of the bending angle of the pipe; and a vertical support pin (17) is fixedly connected to the base (1) on the side of the working disc (4).

2. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: The outer wall of the bending pin (15) is rotatably connected to a first seamless steel sleeve (16), and the outer wall of the supporting pin (17) is rotatably connected to a second seamless steel sleeve (18).

3. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: A cutting mechanism (2) is arranged on the top of the base (1); the main body of the cutting mechanism (2) is a cutting table (202), the cutting table (202) is horizontally supported by a plurality of second support columns (201), a bracket with an L-shaped longitudinal section is fixedly connected to the rear side of the top of the cutting table (202) to form an L-shaped frame (203), a second groove (204) is provided inside the L-shaped frame (203) in a direction close to the cutting table (202), a second motor (205) is fixedly connected to the rear side of the L-shaped frame (203), and the output end of the second motor (205) passes through the L-shaped frame (203) and is fixedly connected to a The threaded rod (206) is centrally mounted, the outer wall of the threaded rod (206) is threadedly connected to a moving block (207), the bottom of the moving block (207) is fixedly connected to a fixed column (208), the bottom end of the fixed column (208) is rotatably connected to a U-shaped plate (209), the interior of the U-shaped plate (209) is rotatably matched with a cutting ring knife (210) with rotating power; the left and right sides of the interior of the second groove (204) are provided with sliding grooves (23), the left and right sides of the moving block (207) are fixedly connected to sliders (24), and the two sliders (24) are respectively slidably connected to the corresponding sliding grooves (23).

4. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: Two groups of switches (19) are fixedly connected to the working disc (4) or the base (1), and the two groups of switches (19) are electrically connected to the first motor (12) and the second motor (205) respectively. The automatic control box (26) is not connected in series with the switches (19) but is directly connected to the first motor (12).

5. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: An obliquely arranged diagonal support rod (21) is fixed to the bottom of the motor bracket (11) and the front side of the vertical plate (10).

6. The automatic angle-controlled pipe bending device according to claim 3, characterized in that: The working disc (4) is elevated by a first support column (3), and the top surface of the cutting table (202) is higher than the highest point of the U-shaped clamping plate (7). A material placement table (27) having a top surface at the same height as the top surface of the cutting table (202) is provided on the side of the base (1).

7. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: A scale (5) for indicating angles is arranged around the top of the working disc (4).

8. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: The first motor (12) is a low-speed high-torque motor, or a reducer is provided between the first motor (12) and the rotating rod (13), and the output power of the first motor (12) is decelerated and then transmitted to the rotating plate (14) by the rotating rod (13).

9. The automatic angle-controlled pipe bending device according to claim 1, characterized in that: A threaded hole is provided on the side of the U-shaped clamping plate (7), and a bolt (8) is matched with the inner thread of the threaded hole. The central mold (9) clamped in the U-shaped clamping plate (7) can be fixed by tightening the bolt (8).

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