Stainless steel pipe bending machine

Abstract

The utility model relates to the technical field of bending machines, in particular to a stainless steel pipe bending machine which comprises a machine frame, a U-shaped frame, a driving assembly B, a limiting assembly and a clamping assembly. A guide wheel and a supporting wheel are rotationally arranged on the rack and are equal in height. The U-shaped frame is rotationally connected with the rack, and a driving assembly A for driving the U-shaped frame to rotate around the axis of the supporting wheel is arranged on the rack. The U-shaped frame is in sliding connection with a sliding frame A. The sliding frame A is rotationally connected with pulleys. The driving assembly B is connected with the U-shaped frame and drives the sliding frame A to get away from or get close to the supporting wheels. The limiting assembly is connected with the sliding frame A and the pulley so that the pulley can be kept not rotating when the steel pipe is bent, and the pulley can roll along the surface of the steel pipe when the U-shaped frame rotates and resets. The clamping assembly is connected with the rack and located between the guide wheel and the supporting wheel. The steel pipe bending device can bend steel pipes with different diameters, the bending angle is large, meanwhile, stability is high, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a stainless steel pipe bending machine. Background Art

[0002] Stainless steel pipes are hollow long round steel bars, mainly widely used in industrial conveying pipelines such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments, etc. and mechanical structure components, etc. When stainless steel pipes are actually used, they need to be bent according to the on-site situation, and the bending of stainless steel pipes is usually completed by a bending machine. The existing bending machines are cumbersome to operate.

[0003] The technical solution disclosed in the Chinese patent with the authorization announcement number CN220329678U realizes the effect of adjusting the distance between the rollers according to the different diameters of the stainless steel pipes by adding a first motor, a first roller, an electric telescopic rod and a second roller, and can clamp and convey more stably.

[0004] However, this device still has deficiencies: when the device needs to bend the steel pipe at a large angle, it is necessary to drive the support plate to rotate through the motor. This structure has high power requirements for the motor, high energy consumption, and the opening width of the limit frame of this device is fixed. For steel pipes with a smaller diameter, it is very easy for the body of the steel pipe to swing inside the limit frame during the bending process. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a stainless steel pipe bending machine aiming at the problems existing in the background art.

[0006] The technical solution of the utility model: a stainless steel pipe bending machine includes a frame, on which a guide wheel and a support wheel are rotatably arranged, and the guide wheel and the support wheel are at the same height.

[0007] A U-shaped frame is rotatably connected to the frame, and a driving component A for driving the U-shaped frame to rotate around the axis of the support wheel is arranged on the frame. The U-shaped frame is slidably connected to a sliding frame A, and the sliding frame A is rotatably connected to a pulley.

[0008] A driving component B is connected to the U-shaped frame and drives the sliding frame A to move away from or close to the support wheel.

[0009] A limiting component is connected to the sliding frame A and the pulley, so that the pulley remains non-rotating in the state of bending the steel pipe, and the pulley rolls along the surface of the steel pipe when the U-shaped frame rotates and resets.

[0010] And a clamping component is connected to the frame and is located between the guide wheel and the support wheel. The clamping component locks and fixes the straight pipe of the steel pipe in the working state.

[0011] Preferably, a rotating shaft A and a rotating shaft B are arranged on the frame. The guiding wheel is coaxially and rotatably connected to the rotating shaft A, and the supporting wheel is coaxially and rotatably connected to the rotating shaft B. Both arms of the U-shaped frame are rotatably connected to the rotating shaft B, and the supporting wheel is located between the two side arms of the U-shaped frame.

[0012] Preferably, the driving assembly A includes a hydraulic cylinder A, and a fixed shaft is arranged on the U-shaped frame. The cylinder barrel of the hydraulic cylinder A is rotatably connected to the rotating shaft A, and the push rod of the hydraulic cylinder A is rotatably connected to the fixed shaft.

[0013] Preferably, a bracket is arranged on the frame, and both the rotating shaft A and the rotating shaft B are rotatably connected to the bracket.

[0014] Preferably, an angle gauge is arranged on the frame. The angle gauge includes a plurality of tooth grooves arranged in an annular array around the axis of the supporting wheel, and a pointer pointing to the tooth grooves is arranged on the supporting wheel.

[0015] Preferably, the limiting assembly includes a ratchet and a ratchet tooth. A circular groove is arranged on the carriage A. The circular groove is coaxial with the mounting shaft of the pulley, and a sliding groove communicating with the circular groove is arranged on the carriage A. The ratchet is coaxially connected to the mounting shaft of the pulley. The ratchet tooth is located in the sliding groove and is slidably connected to the inner wall thereof. A spring is arranged in the sliding groove. The spring connects the ratchet tooth, and the ratchet tooth is unidirectionally engaged with the ratchet.

[0016] Preferably, the clamping assembly includes a carriage B and a hydraulic cylinder C. The carriage B is slidably connected to the frame. The carriage B is rotatably connected with a limiting wheel, and the hydraulic cylinder C is connected to the frame and drives the carriage B to slide.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] By arranging a slidable limiting wheel, the main body of steel pipes with different diameters is fixed and limited by the limiting wheel, preventing the main body of the steel pipe from freely swinging when the front end of the steel pipe is bent; by arranging a U-shaped frame rotating around the supporting wheel and arranging a slidably adjustable pulley on the U-shaped frame, it is convenient to clamp steel pipes with different diameters, and the steel pipe is bent by driving the rotation of the U-shaped frame. The pulley can only freely rotate when rotating and resetting, so as to automatically pull the front end of the steel pipe to bend it by using the friction between the pulley and the steel pipe when the steel pipe is bent. At the same time, the utility model is driven by a hydraulic cylinder, which has a large thrust and low energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0020] Figure 2 is a schematic connection structure diagram of each component on the U-shaped frame;

[0021] Figure 3 is a schematic connection structure diagram of each component on the carriage A.

[0022] Reference numerals: 1, frame; 101, angle gauge; 2, rotating shaft A; 3, guide wheel; 4, rotating shaft B; 5, support wheel; 6, pointer; 7, U-shaped frame; 8, hydraulic cylinder A; 9, carriage A; 10, rotating shaft C; 11, pulley; 12, hydraulic cylinder B; 13, ratchet; 14, ratchet tooth; 15, spring; 16, carriage B; 17, limit wheel; 18, hydraulic cylinder C. Detailed implementation mode

[0023] Embodiment 1

[0024] As Figures 1 - 3 shown, a stainless steel pipe bending machine proposed by the present utility model includes a frame 1, a U-shaped frame 7, a driving assembly B, a limiting assembly, and a clamping assembly. A rotating shaft A 2 and a rotating shaft B 4 are arranged on the frame 1. The guide wheel 3 is coaxially and rotatably connected to the rotating shaft A 2, and the support wheel 5 is coaxially and rotatably connected to the rotating shaft B 4. Both arms of the U-shaped frame 7 are rotatably connected to the rotating shaft B 4, and the support wheel 5 is located between the two side arms of the U-shaped frame 7. The guide wheel 3 and the support wheel 5 are at the same height. A bracket is arranged on the frame 1, and both the rotating shaft A 2 and the rotating shaft B 4 are rotatably connected to the bracket. The U-shaped frame 7 is rotatably connected to the frame 1, and a driving assembly A for driving the U-shaped frame 7 to rotate around the axis of the support wheel 5 is arranged on the frame 1. The driving assembly A includes, but is not limited to, a hydraulic cylinder A 8. A fixed shaft is arranged on the U-shaped frame 7. The cylinder barrel of the hydraulic cylinder A 8 is rotatably connected to the rotating shaft A 2, and the push rod of the hydraulic cylinder A 8 is rotatably connected to the fixed shaft. The U-shaped frame 7 is slidably connected to a carriage A 9, and the carriage A 9 is rotatably connected to a pulley 11. The driving assembly B includes, but is not limited to, a hydraulic cylinder B 12. The hydraulic cylinder B 12 is connected to the U-shaped frame 7 and drives the carriage A 9 to move away from or close to the support wheel 5. The limiting assembly includes a ratchet 13 and a ratchet tooth 14. A circular groove is arranged on the carriage A 9. The circular groove is coaxial with the mounting shaft of the pulley 11, and a chute communicating with the circular groove is arranged on the carriage A 9. The ratchet 13 is coaxially connected to the mounting shaft of the pulley 11. The ratchet tooth 14 is located in the chute and is slidably connected to its inner wall. A spring 15 is arranged in the chute. The spring 15 connects the ratchet tooth 14, and the ratchet tooth 14 is unidirectionally engaged with the ratchet 13. The limiting assembly connects the carriage A 9 and the pulley 11, so that the pulley 11 remains stationary when bending the steel pipe, and the pulley 11 rolls along the surface of the steel pipe when the U-shaped frame 7 rotates and returns to its original position. The clamping assembly is connected to the frame 1 and is located between the guide wheel 3 and the support wheel 5. The clamping assembly includes a carriage B 16 and a hydraulic cylinder C 18. The carriage B 16 is slidably connected to the frame 1. The carriage B 16 is rotatably connected to a limit wheel 17. The hydraulic cylinder C 18 is connected to the frame 1 and drives the carriage B 16 to slide. The clamping assembly locks and fixes the straight pipe of the steel pipe in the working state.

[0025] In this embodiment, the steel pipe is passed through between the guide wheel 3, the support wheel 5 and the limit wheel 17, and the front end of the steel pipe is placed on the inner wall of the annular groove of the support wheel 5. Then, the hydraulic cylinder C18 is started, and the hydraulic cylinder C18 presses down the carriage B16 so that the limit wheel 17 fixes and limits the straight pipe part of the steel pipe. Subsequently, the hydraulic cylinder B12 is driven, and the hydraulic cylinder B12 presses down the carriage A9 so that the pulley 11 abuts against the steel pipe. Then, the hydraulic cylinder A8 is started, and the hydraulic cylinder A8 drives the U-shaped frame 7 to rotate around the axis of the support wheel 5, thereby driving the pulley 11 to rotate around the support wheel 5. The pulley 11 will not rotate under the limitation of the ratchet 13 and the ratchet teeth 14. Furthermore, the pulley pulls the front end of the steel pipe to move and completes the bending of the front end of the steel pipe. If the bending angle is not enough at one time, at this time, the hydraulic cylinder A8 pulls back the U-shaped frame 7 to reset it. During the reset process of the pulley 11, the ratchet 13 and the ratchet teeth 14 are no longer engaged, so that the pulley 11 rolls along the surface of the steel pipe during the reset process. After the pulley 11 rotates back to the reset position, the hydraulic cylinder A8 is used to drive the U-shaped frame 7 to rotate by an appropriate angle again to complete the large-angle bending of the steel pipe.

[0026] Embodiment 2

[0027] As Figure 1 and Figure 2 shown, a stainless steel pipe bending machine proposed by the present utility model, compared with Embodiment 1, an angle scale 101 is provided on the frame 1. The angle scale 101 includes a plurality of tooth grooves arranged in an annular array around the axis of the support wheel 5, and a pointer 6 pointing to the tooth grooves is provided on the support wheel 5.

[0028] In this embodiment, when the support wheel 5 rotates, the pointer 6 rotates accordingly, so as to intuitively observe the angle of the bent section of the current steel pipe.

[0029] The embodiments of the present utility model have been described in detail above with reference to the drawings. However, the present utility model is not limited to this. Within the scope of knowledge possessed by those skilled in the art to which the present utility model pertains, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A stainless steel pipe bending machine, characterized in that: include A frame (1), a guide wheel (3) and a support wheel (5) are rotatably arranged on the frame (1), and the guide wheel (3) and the support wheel (5) are at the same height; A U-shaped frame (7), the U-shaped frame (7) is rotatably connected to the frame (1), and a driving assembly A is provided on the frame (1) for driving the U-shaped frame (7) to rotate around the axis of the supporting wheel (5); the U-shaped frame (7) is slidably connected to a slide frame A (9), and the slide frame A (9) is rotatably connected to a pulley (11); A driving assembly B, which is connected to the U-shaped frame (7) and drives the carriage A (9) to move away from or towards the supporting wheel (5); A limit assembly, the limit assembly connects the slide A (9) and the pulley (11), so that the pulley (11) remains stationary when the steel pipe is bent, and the pulley (11) rolls along the surface of the steel pipe when the U-shaped frame (7) rotates and resets; And a clamping assembly, which is connected to the frame (1) and is located between the guide wheel (3) and the support wheel (5), and the clamping assembly locks and fixes the straight pipe of the steel pipe in a working state.

2. A stainless steel pipe bending machine according to claim 1, characterized in that: A rotating shaft A (2) and a rotating shaft B (4) are arranged on the frame (1); the guide wheel (3) is coaxial with the rotating shaft A (2) and is rotatably connected; the support wheel (5) is coaxial with the rotating shaft B (4) and is rotatably connected; both support arms of the U-shaped frame (7) are rotatably connected to the rotating shaft B (4); and the support wheel (5) is located between the support arms on both sides of the U-shaped frame (7).

3. A stainless steel pipe bending machine according to claim 2, characterized in that: The driving assembly A comprises a hydraulic cylinder A (8), and a fixed shaft is arranged on the U-shaped frame (7); the cylinder barrel of the hydraulic cylinder A (8) is rotatably connected to the rotating shaft A (2), and the push rod of the hydraulic cylinder A (8) is rotatably connected to the fixed shaft.

4. A stainless steel pipe bending machine according to claim 3, characterized in that: A bracket is arranged on the frame (1), and the rotating shaft A (2) and the rotating shaft B (4) are both rotatably connected to the bracket.

5. A stainless steel pipe bending machine according to claim 1, characterized in that: An angle ruler (101) is arranged on the frame (1), and the angle ruler (101) comprises a plurality of tooth grooves arranged in a ring array around the axis of the support wheel (5), and a pointer (6) pointing to the tooth groove is arranged on the support wheel (5).

6. A stainless steel pipe bending machine according to claim 1, characterized in that: The limit assembly comprises a ratchet (13) and a ratchet tooth (14); a circular groove is arranged on the slide A (9), the circular groove is coaxial with the installation axis of the pulley (11), and a slide groove connected with the circular groove is arranged on the slide A (9); the ratchet (13) is coaxially connected with the installation axis of the pulley (11), the ratchet tooth (14) is located in the slide groove and is slidably connected with the inner wall thereof, and a spring (15) is arranged in the slide groove, the spring (15) is connected with the ratchet tooth (14), and the ratchet tooth (14) is unidirectionally engaged with the ratchet (13).

7. A stainless steel pipe bending machine according to claim 1, characterized in that: The clamping assembly comprises a slide B (16) and a hydraulic cylinder C (18); the slide B (16) is slidably connected to the frame (1), the slide B (16) is rotatably connected to the limiting wheel (17), and the hydraulic cylinder C (18) is connected to the frame (1) and drives the slide B (16) to slide.

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