Metal pipe bending device

Abstract

The utility model discloses a metal pipe bending device, comprising a workbench, wherein two limiting wheels are arranged on one side of the upper surface of the workbench, and a bending wheel is arranged at a position between the two limiting wheels on the other side of the upper surface of the workbench, the bending wheel is rotatably installed between the inner walls on both sides of the mounting frame, one side surface of the mounting frame is fixedly connected to one end of a hydraulic cylinder piston rod, and the hydraulic cylinder is fixedly connected to the workbench through a connecting piece, the bending wheel comprises a disc, a plurality of second slide grooves evenly distributed in an annular shape are opened on the upper surface of the disc, a sliding rod is slidably connected in each of the second slide grooves, each of the sliding rods is connected to an independent driving mechanism, and one end of each of the sliding rods is connected to an adjustable abutment mechanism, and the bending wheel capable of adjusting the diameter and shape is provided to reduce the limitations in the metal pipe bending work, and relatively improve the stability and safety during use.

Description

Technical Field

[0001] The utility model relates to the field of metal pipeline processing, in particular to a metal pipeline bending device. Background Art

[0002] Pipe bending, especially metal pipe bending, is used in many fields. For example, in the automotive industry, a large number of metal pipe bends with multiple bending angles and bending directions are used to manufacture hydraulic pipes or pneumatic pipes, especially pipes in automobile brake systems and air-conditioning systems. Currently, pipe bending is performed using a bending machine, but the pipe needs to be continuously pushed forward when bending, and the pipe also needs to be restricted to prevent the pipe from jumping up and injuring people when being bent. For this purpose, application number: CN202222190090.8 discloses a metal pipe bending machine, including a cabinet, the surface of the cabinet is rotatably connected to two fixed wheels, a hydraulic rod is fixedly installed at the bottom of the cabinet, a wheel seat is fixedly installed at the output end of the hydraulic rod, the wheel seat is slidably connected to the surface of the cabinet, and an extrusion wheel is rotatably connected inside the wheel seat. By inserting the pipe between the fixed wheel and the extrusion wheel, the hydraulic rod is extended and retracted to push the extrusion wheel to bend the pipe. The pipes are placed on the auxiliary shaft, which facilitates the advancement and movement of the pipe. At the same time, there is a pressing shaft above the auxiliary shaft. The pressing shaft is continuously moved downward by rotating the threaded rod until the pressing shaft presses the pipe onto the auxiliary shaft. It does not affect the advancement of the pipe, but can suppress the pipe and reduce the possibility of jumping, thereby achieving the purpose of convenient advancement and protection.

[0003] However, the above scheme still has certain defects. The inventors have found through research that the extrusion wheel that cooperates with the fixed wheel to bend the metal pipe in the above scheme is a fixed structure, and its diameter and shape cannot be adjusted. As a result, when the metal pipe is abutted and fitted, it will be affected by its external structure to produce a corresponding bending angle and shape, which leads to certain limitations in use.

[0004] How to invent a metal pipe bending device to improve these problems has become an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a metal pipe bending device, which aims to improve the problem that the extrusion wheel that cooperates with the fixed wheel to bend the metal pipe is a fixed structure, and its diameter and shape cannot be adjusted, which means that when the metal pipe is abutted and fitted, it will be affected by its external structure to produce a corresponding bending angle and shape, which leads to certain limitations in use.

[0006] The utility model is implemented as follows: a metal pipe bending device comprises a workbench, two limiting wheels are arranged on one side of the upper surface of the workbench, a bending wheel is arranged on the other side of the upper surface of the workbench between the two limiting wheels, the bending wheel is rotatably installed between the inner walls on both sides of the mounting frame, one side surface of the mounting frame is fixedly connected to one end of the hydraulic cylinder piston rod, the hydraulic cylinder is fixedly connected to the workbench through a connecting piece, the bending wheel comprises a disc, a plurality of second slide grooves evenly distributed in an annular shape are opened on the upper surface of the disc, a sliding rod is slidably connected in each of the second slide grooves, each of the sliding rods is connected to an independent driving mechanism, and one end of each of the sliding rods is connected to an adjustable abutment mechanism.

[0007] In a preferred technical solution of the present utility model, an annular groove is provided on the outer wall of each of the limiting wheels.

[0008] In a preferred technical solution of the present invention, each of the limiting wheels is rotatably connected to the corresponding first slider via a rotating shaft, and the two first sliders are slidably installed in the first sliding groove opened on the surface of the workbench. A threaded hole is opened on one side surface of each of the first sliders, and is threadedly connected to the two ends of the bidirectional screw through the threaded hole. The two ends of the bidirectional screw are respectively rotatably installed on the surfaces of the opposite sides of the two mounting plates, and one end of the bidirectional screw is fixedly connected to the output shaft of the first motor through a through hole set on the surface of the mounting plate on the corresponding side, and the first motor is fixedly installed on the surface of one end of the workbench.

[0009] In a preferred technical solution of the present invention, each of the driving mechanisms includes a second slider, which is fixedly connected to the bottom surface of the corresponding sliding rod, and each of the second sliders is slidably installed in a third slide groove opened on the inner wall of the bottom of the corresponding second slide groove, and extends to the bottom of the disc through the third slide groove. A threaded hole is opened on the side surface of the second slider located below the disc, and a driving screw is threadedly connected to the threaded hole, one end of the driving screw is fixedly connected to one end of the corresponding second motor output shaft, and the second motor is fixedly connected to the bottom surface of the disc.

[0010] In a preferred technical solution of the utility model, each of the adjustable abutment mechanisms includes a connecting block fixedly mounted on one end of the corresponding sliding rod, a fourth sliding groove is provided on one side surface of the connecting block, two third sliding blocks are slidably mounted in the fourth sliding groove, arc-shaped limit members are fixedly connected to one side surface of the two third sliding blocks, the two arc-shaped limit members are arranged opposite to each other, and the two third sliding blocks are connected to the synchronous adjustment mechanism.

[0011] In a preferred technical solution of the present utility model, a rubber pad is provided on one side surface of each of the arc-shaped limiting members.

[0012] In a preferred technical solution of the present invention, the synchronous adjustment mechanism includes two relatively arranged tooth plates, and the two tooth plates are respectively fixedly connected to the surface of the corresponding third slider away from the arc-shaped limit member. A first gear is arranged between the two tooth plates and is meshed with the first gear at the same time. The first gear is located in a groove opened at one end of the sliding rod and the connecting block. The first gear is fixedly sleeved on one end of the mounting shaft, and the other end of the mounting shaft is rotatably connected to the inner wall of one side of the groove. A second gear is also fixedly sleeved on the mounting shaft, and the second gear is meshed with a third gear on one side. The third gear is fixedly sleeved on one end of the output shaft of the third motor, and the third motor is fixedly connected to the surface of one side of the sliding rod.

[0013] The beneficial effect of the utility model is that the utility model obtains a metal pipe bending device through the above design. When in use, by setting a bending wheel that can adjust the diameter and shape, the number and length of the extended sliding rods are selected according to the needs of the bending angle and shape. The metal pipe is supported by the limiting wheels and the bending wheels from both sides and then bent between the limiting wheels. The bending angle and shape are affected by the number of adjustable abutment mechanisms contacted, thereby reducing the limitations on the metal pipe bending work and relatively improving the stability and safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic three-dimensional diagram of the overall structure provided by the embodiment of the utility model;

[0016] Figure 2 A schematic three-dimensional diagram of the structure of the other side of the workbench provided in an embodiment of the utility model;

[0017] Figure 3 A schematic three-dimensional diagram of the overall structure of the bending wheel provided in the embodiment of the utility model;

[0018] Figure 4 A schematic three-dimensional diagram of the overall structure of the bending wheel on the other side provided by an embodiment of the utility model;

[0019] Figure 5 A schematic three-dimensional diagram of the separation structure of the disc and the sliding rod provided in an embodiment of the utility model;

[0020] Figure 6This is a schematic three-dimensional diagram of the overall cross-sectional structure of the adjustable abutment mechanism provided in an embodiment of the utility model.

[0021] In the figure: 1-workbench; 2-limiting wheel; 3-bending wheel; 4-mounting frame; 5-hydraulic cylinder; 201-annular groove; 202-first slider; 203-first slide groove; 204-bidirectional screw; 205-mounting plate; 206-first motor; 301-disc; 302-second slide groove; 303-sliding rod; 304-second slider; 305-third slide groove; 306-driving screw; 307-second motor; 308-connecting block; 309-fourth slide groove; 310-third slider; 311-arc-shaped limiting member; 312-tooth plate; 313-first gear; 314-mounting shaft; 315-second gear; 316-third gear; 317-third motor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 6 The utility model provides a technical solution: a metal pipe bending device, including a workbench 1, two limiting wheels 2 are arranged on one side of the upper surface of the workbench 1, and a bending wheel 3 is arranged between the two limiting wheels 2 on the other side of the upper surface of the workbench 1. The bending wheel 3 is rotatably installed between the inner walls of the mounting frame 4 on both sides, and the surface of one side of the mounting frame 4 is fixedly connected to one end of the piston rod of the hydraulic cylinder 5, and the hydraulic cylinder 5 is fixedly connected to the workbench 1 through a connecting piece. The bending wheel 3 includes a disc 301, and a plurality of second slide grooves 302 evenly distributed in an annular shape are opened on the upper surface of the disc 301, and a sliding rod 303 is slidably connected in each second slide groove 302, and each sliding rod 303 is connected to an independent driving mechanism, and one end of each sliding rod 303 is connected to an adjustable abutment mechanism.

[0024] See also Figure 1 , an annular groove 201 is provided on the outer wall of each limiting wheel 2.

[0025] The annular groove 201 can be provided to simply limit the position of the metal tube, thereby preventing the metal tube from bursting under pressure, thereby improving stability and safety during use.

[0026] Please refer to the figure Figure 2Each limiting wheel 2 is rotatably connected to the corresponding first slider 202 through a rotating shaft. The two first sliders 202 are slidably installed in the first slide groove 203 opened on the surface of the workbench 1. A threaded hole is opened on one side surface of each first slider 202, and is threadedly connected to the two ends of the bidirectional screw 204 through the threaded hole. The two ends of the bidirectional screw 204 are rotatably installed on the surfaces of the opposite sides of the two mounting plates 205 respectively. One end of the bidirectional screw 204 is fixedly connected to the output shaft of the first motor 206 through a through hole set on the surface of the corresponding side mounting plate 205. The first motor 206 is fixedly installed on the surface of one end of the workbench 1.

[0027] Start the first motor 206 to drive the bidirectional screw 204 to rotate. Since the two first sliders 202 are connected to the two ends of the bidirectional screw 204 through threaded holes and are slidably connected to the first slide groove 203, the two first sliders 202 can move synchronously away from or towards each other as the rotation direction of the bidirectional screw 204 changes, thereby driving the two limiting wheels 2 to adjust the spacing synchronously, and at the same time ensuring that the bending wheel 3 is always in the center position. By adjusting the spacing between the two limiting wheels 2, the limitations during use can be reduced to avoid the inability to effectively limit the metal pipe when it is too long or too short.

[0028] See also Figures 3 to 6 Each driving mechanism includes a second slider 304, which is fixedly connected to the bottom surface of the corresponding sliding rod 303. Each second slider 304 is slidably installed in a third slide groove 305 opened on the inner wall of the bottom of the corresponding second slide groove 302, and extends to the bottom of the disc 301 through the third slide groove 305. A threaded hole is opened on one side surface of the second slider 304 located below the disc 301, and a driving screw 306 is threadedly connected in the threaded hole. One end of the driving screw 306 is fixedly connected to one end of the output shaft of the corresponding second motor 307, and the second motor 307 is fixedly connected to the bottom surface of the disc 301.

[0029] When the second motor 307 drives the driving screw 306 to rotate, the second slider 304 can be displaced in the third slide groove 305, thereby driving the sliding rod 303 to be synchronously displaced in the corresponding second slide groove 302, so that each sliding rod 303 can be independently extended or contracted, and the distance between the end of the sliding rod 303 and the disc 301 can be adjusted by adjusting the distance between the abutment mechanism and the disc 301. When there are different requirements for the curvature of the metal pipe, part of the sliding rod 303 can be controlled to extend and contact the metal pipe, and the angle and shape of the bending part can be controlled according to the number of contact points, thereby reducing limitations in use and improving work efficiency when bending metal pipes.

[0030] Furthermore, each adjustable abutment mechanism includes a connecting block 308 fixedly mounted on one end of the corresponding sliding rod 303, a fourth sliding groove 309 is provided on one side surface of the connecting block 308, two third sliding blocks 310 are slidably mounted in the fourth sliding groove 309, and arc-shaped limit members 311 are fixedly connected to one side surface of the two third sliding blocks 310, the two arc-shaped limit members 311 are arranged opposite to each other, and the two third sliding blocks 310 are connected to the synchronous adjustment mechanism.

[0031] The synchronous adjustment mechanism can drive the two third sliders 310 to move in opposite directions, thereby adjusting the distance between the two arc-shaped limiters 311, and can perform abutment and limitation on metal pipes with different diameters within a certain range, further reducing limitations in use, and avoiding the inability to perform stable abutment and limitation on the metal pipe, resulting in the danger of misalignment and collapse of the metal pipe when the bending wheel 3 squeezes the metal pipe as a whole for bending.

[0032] Furthermore, a rubber pad is provided on one side surface of each arc-shaped limiting member 311 .

[0033] The rubber pad can be provided to increase the friction between the arc-shaped stopper 311 and the outer wall of the metal tube, thereby further improving the stability during abutment.

[0034] Furthermore, the synchronous adjustment mechanism includes two relatively arranged tooth plates 312, and the two tooth plates 312 are respectively fixedly connected to the surface of the corresponding third slider 310 away from the arc limiter 311. A first gear 313 is arranged between the two tooth plates 312 and is meshed with the first gear 313 at the same time. The first gear 313 is located in a groove opened at one end of the connecting rod 303 and the connecting block 308. The first gear 313 is fixedly sleeved on one end of the mounting shaft 314, and the other end of the mounting shaft 314 is rotatably connected to the inner wall of one side of the groove. A second gear 315 is also fixedly sleeved on the mounting shaft 314, and the second gear 315 is meshed with a third gear 316 on one side. The third gear 316 is fixedly sleeved on one end of the output shaft of the third motor 317, and the third motor 317 is fixedly connected to the surface of one side of the sliding rod 303.

[0035] The third motor 317 is started to drive the third gear 316 to rotate, and the mounting shaft 314 is driven to rotate through the meshing connection between the third gear 316 and the second gear 315. When the mounting shaft 314 rotates, the first gear 313 rotates synchronously, thereby driving the tooth plates 312 on both sides to move in the opposite direction, so that the two third sliders 310 slide synchronously in the fourth slide groove 309 to adjust the distance between the two arc-shaped limit members 311.

[0036] Working principle: the metal pipe is pressed against one side of the two limiting wheels 2 and placed in the annular groove 201 for simple limiting. The hydraulic cylinder 5 is started to drive the bending wheel 3 to move toward the metal pipe. The number and length of the extended sliding rods 303 are selected according to the needs of the bending angle and shape. The metal pipe is supported by the limiting wheels 2 and the bending wheels 3 from both sides and then bent between the limiting wheels 2. The bending angle and shape are affected by the number of adjustable abutment mechanisms in contact, thereby improving the diversity of the bending work. By setting a bending wheel 3 with adjustable diameter and shape, the limitations on the metal pipe bending work are reduced, and the stability and safety during use are relatively improved.

[0037] It should be noted that the specific models and specifications of the first motor 206, the second motor 307, the third motor 317 and the hydraulic cylinder 5 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0038] The power supply and principle of the first motor 206 , the second motor 307 , the third motor 317 and the hydraulic cylinder 5 are clear to those skilled in the art and will not be described in detail herein.

[0039] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A metal pipe bending device, characterized in that: It includes a workbench, two limiting wheels are arranged on one side of the upper surface of the workbench, and a bending wheel is arranged on the other side of the upper surface of the workbench between the two limiting wheels. The bending wheel is rotatably installed between the inner walls on both sides of the mounting frame, and one side surface of the mounting frame is fixedly connected to one end of the hydraulic cylinder piston rod, and the hydraulic cylinder is fixedly connected to the workbench through a connecting piece. The bending wheel includes a disc, and a plurality of second sliding grooves evenly distributed in an annular shape are opened on the upper surface of the disc, and a sliding rod is slidably connected in each of the second sliding grooves, and each of the sliding rods is connected to an independent driving mechanism, and one end of each of the sliding rods is connected to an adjustable abutment mechanism.

2. The metal pipe bending device according to claim 1, characterized in that: The outer wall of each limiting wheel is provided with an annular groove.

3. The metal pipe bending device according to claim 1, characterized in that: Each of the limiting wheels is rotatably connected to the corresponding first slider via a rotating shaft, and the two first sliders are slidably installed in the first sliding groove opened on the surface of the workbench. A threaded hole is opened on one side surface of each of the first sliders, and is threadedly connected to the two ends of the bidirectional screw through the threaded hole. The two ends of the bidirectional screw are respectively rotatably installed on the surfaces of the opposite sides of the two mounting plates, and one end of the bidirectional screw is fixedly connected to the output shaft of the first motor through a through hole set on the surface of the mounting plate on the corresponding side, and the first motor is fixedly installed on the surface of one end of the workbench.

4. The metal pipe bending device according to claim 1, characterized in that: Each of the driving mechanisms includes a second slider, which is fixedly connected to the bottom surface of the corresponding sliding rod. Each of the second sliders is slidably installed in a third slide groove opened on the inner wall of the bottom of the corresponding second slide groove, and extends to the bottom of the disc through the third slide groove. A threaded hole is opened on one side surface of the second slider located below the disc, and a driving screw is threadedly connected to the threaded hole. One end of the driving screw is fixedly connected to one end of the corresponding second motor output shaft, and the second motor is fixedly connected to the bottom surface of the disc.

5. The metal pipe bending device according to claim 1, characterized in that: Each of the adjustable abutment mechanisms includes a connecting block fixedly mounted on one end of a corresponding sliding rod, a fourth sliding groove being provided on one side surface of the connecting block, two third sliding blocks being slidably mounted in the fourth sliding groove, arc-shaped limiters being fixedly connected to one side surface of the two third sliding blocks, the two arc-shaped limiters being arranged opposite to each other, and the two third sliding blocks being connected to a synchronous adjustment mechanism.

6. The metal pipe bending device according to claim 5, characterized in that: A rubber pad is arranged on one side surface of each arc-shaped limiting member.

7. The metal pipe bending device according to claim 5, characterized in that: The synchronous adjustment mechanism includes two oppositely arranged tooth plates, the two tooth plates are respectively fixedly connected to the surface of the corresponding third sliding block away from the arc-shaped limiter, a first gear is arranged between the two tooth plates, and is meshed with the first gear at the same time, the first gear is located in a groove opened at one end of the sliding rod and the connecting block, the first gear is fixedly sleeved on one end of the mounting shaft, and the other end of the mounting shaft is rotatably connected to the inner wall of one side of the groove, a second gear is also fixedly sleeved on the mounting shaft, the second gear is meshed with the third gear on one side, the third gear is fixedly sleeved on one end of the output shaft of the third motor, and the third motor is fixedly connected to the surface of one side of the sliding rod.

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