Metal pipe bending device

Abstract

The present invention relates to the technical field of metal tube bending processing, and discloses a metal tube bending device, including a bottom plate, a support column is provided on the left side of the bottom plate, a placing table is provided on the upper end of the support column, a driving roller is provided on the right end of the placing table, a support plate is provided at the front and rear ends of the right side of the bottom plate, a first slide is provided in the middle of the support plate, the first slide is slidably connected to the two sides of the sliding seat, a fixed plate is provided at the front and rear ends of the sliding seat, a rotating shaft is provided at the bottom of the fixed plate, a second slide is evenly distributed on the outer side of the fixed plate relative to the axis of the rotating shaft, the middle of the second slide is slidably connected to the second slider, the second slider is rotatably connected to the two ends of the supporting roller on the side close to the center of the device, and a third spring is provided between the second slider and the second slide. The present invention is applicable to a metal tube bending device, when the fixed plate moves up and down, the pressure rod can push the supporting roller to move, so that the radius of the arc composed of multiple supporting rollers changes, thereby achieving the effect of adjusting the bending radius.

Description

Technical Field

[0001] The invention relates to the technical field of metal tube bending processing, in particular to a metal tube bending device. Background Art

[0002] Bending machines are used to bend metal pipes. The quality of bending will directly affect the structural rationality and safety of the metal pipe products.

[0003] However, the common bending machines currently only process plates and bend them into fixed angles, and cannot effectively bend some pipes. When processing some gas cylinders, such as LNG cylinders, the connecting pipes are usually made of metal pipes. However, for the convenience of connection, these pipes need to be bent into different angles and lengths. At this time, the ordinary bending machines used for processing plates cannot perform effective bending processing, so it is necessary to design a bending device for pipes in a targeted manner. Summary of the invention

[0004] The present invention provides a metal tube bending device, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The top end of the support leg is provided with a toothed plate, and the bottom end of the support leg is provided with a toothed plate, and the toothed plate is provided with a toothed plate at the bottom end.

[0007] As a preferred technical solution of the present invention, the middle part of the top plate is threadedly connected to the middle part of the first screw rod, a lifting plate is provided at one end of the first screw rod close to the support roller, guide columns slidably connected to the top plate are provided at both ends of the lifting plate, and a chuck is provided on the side of the lifting plate close to the support roller.

[0008] As a preferred technical solution of the present invention, the two sides of the lifting plate are slidably connected to the first sliders, a second spring is provided between the first slider and the guide column, and a chuck is provided on the opposite side of the two first sliders.

[0009] As a preferred technical solution of the present invention, the lower part of the support plate on the front side is rotatably connected to the middle part of the rotating rod, and a third bevel gear is provided at the rear end of the rotating rod. The third bevel gear is meshed and connected to the fourth bevel gear, and the fourth bevel gear is fixedly connected to the second screw rod. The middle part of the second screw rod is threadedly connected to the middle part of the sliding seat.

[0010] As a preferred technical solution of the present invention, a fixing plate is provided at the upper end of the support plate, the middle part of the fixing plate is rotatably connected to the upper end of the second screw rod, and the lower end of the second screw rod is rotatably connected to the bottom plate.

[0011] As a preferred technical solution of the present invention, a driving motor is provided on the front side of the right end of the placement table, the output shaft of the driving motor is fixedly connected to the first bevel gear, the first bevel gear is meshedly connected to the second bevel gear, and the second bevel gear is fixedly connected to the front end of the driving roller.

[0012] As a preferred technical solution of the present invention, a guide rod is provided on the right side of the upper surface of the placing table, the middle part of the guide rod is slidably connected to the end of the sliding plate, and a bearing seat is provided on the side of the sliding plate close to the driving roller, and the bearing seat is rotatably connected to the pressure roller cooperating with the driving roller.

[0013] As a preferred technical solution of the present invention, a limit plate is provided at the upper end of the guide rod, a first spring is provided between the limit plate and the sliding plate, and the first spring is sleeved on the outside of the guide rod.

[0014] As a preferred technical solution of the present invention, when the pressure rod contacts the second slider at the uppermost end, the upper end of the driving roller is flush with the upper end of the supporting roller at the uppermost end.

[0015] The present invention has the following benefits:

[0016] The present invention is applicable to a metal tube bending device. When the fixed plate moves up and down, the pressure rod can push the supporting roller to move, so that the radius of the arc formed by the plurality of supporting rollers changes, thereby achieving the effect of adjusting the bending radius. In addition, during the adjustment process, the uppermost supporting roller is always parallel to the driving roller, so that the tube will not have unnecessary bending during the bending process, thereby improving the overall bending effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The figure is a schematic diagram of the structure of a metal tube bending device.

[0019] Figure 2 The figure is a front view of a metal tube bending device.

[0020] Figure 3 The figure is a schematic diagram of the structure of a driving roller in a metal tube bending device.

[0021] Figure 4 The present invention is a schematic diagram of the structure of a rotating plate in a metal tube bending device.

[0022] Figure 5 The figure is a schematic diagram of the structure of a chuck in a metal tube bending device.

[0023] Figure 6 The figure is a schematic diagram of the structure of a fixed plate in a metal tube bending device.

[0024] Figure 7 for Figure 6 main view.

[0025] In the figure: 1, bottom plate; 2, support column; 3, placing table; 4, driving roller; 5, supporting plate; 6, pressure rod; 7, guide rod; 8, sliding plate; 9, first spring; 10, limit plate; 11, bearing seat; 12, pressure roller; 13, driving motor; 14, first bevel gear; 15, second bevel gear; 16, fixed plate; 17, rotating shaft; 18, rotating plate; 19, rotating plate; 20, top plate; 21, guide column; 22, lifting plate; 23, second spring; 24, first sliding block; 25, chuck; 26, first screw rod; 27, second screw rod; 28, fourth bevel gear; 29, third bevel gear; 30, rotating rod; 31, sliding seat; 32, first slide groove; 33, fixed plate; 34, second slide groove; 35, third spring; 36, second sliding block; 37, supporting roller; 38, supporting rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In one embodiment, see Figure 1-7 A metal tube bending device comprises a bottom plate 1, a support column 2 is arranged on the left side of the bottom plate 1, a placing table 3 is arranged on the upper end of the support column 2, and a driving roller 4 is arranged on the right end of the placing table 3, support plates 5 are arranged at the front and rear ends of the right side of the bottom plate 1, a first slide groove 32 is arranged in the middle of the support plate 5, the first slide groove 32 is slidably connected to the two sides of the sliding seat 31, a fixed plate 16 is arranged at the front and rear ends of the sliding seat 31, a rotating shaft 17 is arranged at the bottom of the fixed plate 16, the fixed plate 16 is fan-shaped, and the rotating shaft 17 is arranged at the top corner of the fan shape, and the outer side of the fixed plate 16 is uniformly provided with second slide grooves 34 relative to the axis of the rotating shaft 17, the middle part of the second slide groove 34 is slidably connected to the second slider 36, and the second slider 36 is rotatably connected to the two ends of the supporting roller 37 on one side close to the center of the device, and a third spring 35 is arranged between the second slider 36 and the second slide groove 34, and the third spring 35 is in a compressed state, so that When the lever 36 is in the normal state, the third spring 35 pushes the second slider 36 outward, so that the support roller 37 moves outward, and the side of the rotating shaft 17 close to the fixed disk 16 is rotatably connected to the rotating disk 18, and the outer side of the rotating disk 18 is rotatably connected to one end of the support rod 38, and the other end of the support rod 38 is rotatably connected to the second slider 36. The end of the rotating shaft 17 away from the fixed disk 16 is rotatably connected to one end of the rotating plate 19, and the other end of the rotating plate 19 is provided with a top plate 20, and a chuck 25 is provided on the top plate 20. The right end of the placing table 3 is provided with a pressure rod 6 that cooperates with the second slider 36 at the upper end. When the pressure rod 6 contacts the second slider 36 at the upper end, the upper end of the driving roller 4 is flush with the upper end of the support roller 37 at the upper end. Therefore, when the pipe moves to the right side through the driving roller 4, the right end of the pipe can just fall on the uppermost support roller 37, and the pipe remains straight at this time.

[0028] In one case of this embodiment, the middle part of the top plate 20 is threadedly connected to the middle part of the first screw rod 26, and a lifting plate 22 is provided at one end of the first screw rod 26 close to the support roller 37, and guide posts 21 slidably connected to the top plate 20 are provided at both ends of the lifting plate 22, and a chuck 25 is provided on one side of the lifting plate 22 close to the support roller 37. The two sides of the lifting plate 22 are slidably connected to the first slider 24, and a second spring 23 is provided between the first slider 24 and the guide post 21, and a chuck 25 is provided on the opposite side of the two first sliders 24. When the first screw rod 26 rotates, the lifting plate 22 moves up and down, so that the chuck 25 can move up and down, and the opposite side of the two chucks 25 is an arc surface, so that the right end of the pipe can be better fixed by the chuck 25.

[0029] In one case of this embodiment, the lower part of the front support plate 5 is rotatably connected to the middle part of the rotating rod 30, and the rear end of the rotating rod 30 is provided with a third bevel gear 29, and the third bevel gear 29 is meshed and connected to the fourth bevel gear 28, and the fourth bevel gear 28 is fixedly connected to the second screw rod 27, and the middle part of the second screw rod 27 is threadedly connected to the middle part of the sliding seat 31. The upper end of the support plate 5 is provided with a fixed plate 33, and the middle part of the fixed plate 33 is rotatably connected to the upper end of the second screw rod 27, and the lower end of the second screw rod 27 is rotatably connected to the bottom plate 1. When the second screw rod 27 rotates, it can drive the sliding seat 31 to move up and down, so that the entire fixed plate 16 can move up and down.

[0030] In one case of this embodiment, a driving motor 13 is provided at the front side of the right end of the placing table 3, and the output shaft of the driving motor 13 is fixedly connected to the first bevel gear 14, the first bevel gear 14 is meshedly connected to the second bevel gear 15, and the second bevel gear 15 is fixedly connected to the front end of the driving roller 4. The driving motor 13 can drive the driving roller 4 to rotate, and a guide rod 7 is provided on the right side of the upper surface of the placing table 3, and the middle part of the guide rod 7 is slidably connected to the end of the sliding plate 8, and the side of the sliding plate 8 close to the driving roller 4 is provided with a bearing seat 11, and the bearing seat 11 is rotatably connected to the pressure roller 12 matched with the driving roller 4. A limit plate 10 is provided at the upper end of the guide rod 7, and a first spring 9 is provided between the limit plate 10 and the sliding plate 8, and the first spring 9 is sleeved on the outside of the guide rod 7. The first spring 9 is in a compressed state, so that the pressure roller 12 is pushed downward by the first spring 9, so that the pressure roller 12 can be pressed on the driving roller 4, so that the pipe is clamped by the driving roller 4 and the pressure roller 12. At the same time, the device can also provide sufficient clamping force for the pressure roller 12 by using pneumatic components such as cylinders, so that the driving roller 4 and the pressure roller 12 can clamp the pipe.

[0031] During the implementation of this embodiment, the device is first placed stably on the bottom surface to maintain the stability of the entire device, and the pipe to be bent is taken out. According to the requirements of the processing technology, the radius of the pipe to be bent is first determined, and the length of the pipe to be bent is also determined.

[0032] Pull the sliding plate 8 upward to separate the driving roller 4 and the pressure roller 12, place the pipe to be bent on the placing table 3, and place the right end of the pipe between the driving roller 4 and the pressure roller 12, release the pressure roller 12, and under the action of the first spring 9, the driving roller 4 and the pressure roller 12 clamp the right end of the pipe, then start the driving motor 13, the driving motor 13 drives the driving roller 4 to rotate clockwise through the meshing first bevel gear 14 and the second bevel gear 15, and the driving roller 4 drives the pipe to move to the right. When the pipe moves to the upper part of the uppermost support roller 37, rotate the rotating plate 19 counterclockwise to rotate the top plate 20 to the upper part of the uppermost support roller 37, and rotate the first screw rod 26 to move the lifting plate 22 downward, and separate the chucks on the front and rear sides. 25, the right end of the pipe is clamped by the chuck 25, and the drive motor 13 can be started at this time, so that the drive roller 4 drives the pipe to move to the right. Since the right end of the pipe is clamped by the chuck 25, the right end of the pipe can only move along the trajectory of the movement of the chuck 25. At this time, the chuck 25 rotates around the rotating shaft 17 through the rotating plate 19, that is, the right end of the pipe continues to rotate around the rotating shaft 17, and the lower part of the pipe is always in contact with the supporting roller 37, so as to realize the bending processing. When the distance moved to the right by the pipe meets the processing length, the drive motor 13 can be stopped at this time to complete the bending processing of the pipe, and the part of the pipe that has completed the bending processing can be cut off at this time, and then the subsequent bending processing of the pipe can be continued.

[0033] The present invention is applicable to a metal tube bending device. When the fixed plate 16 moves up and down, the pressure rod 6 can push the support roller 37 to move, so that the radius of the arc formed by the multiple support rollers 37 changes, thereby achieving the effect of adjusting the bending radius. In addition, during the adjustment process, the uppermost support roller 37 is always parallel to the driving roller 4, so that the tube will not have unnecessary bending during the bending process, thereby improving the overall bending effect.

[0034] After determining the bending radius, the rotating rod 30 is rotated, and the rotating rod 30 drives the second screw rod 27 to rotate through the meshing third bevel gear 29 and the fourth bevel gear 28, and the second screw rod 27 drives the sliding seat 31 to move upward, and the sliding seat 31 drives the fixed plate 16 to move upward. At this time, the second sliding block 36 at the upper end, that is, the leftmost side, contacts the upper pressure rod 6, so that the second sliding block 36 moves downward relative to the second sliding groove 34, and the distance between the second sliding block 36 and the rotating shaft 17 is reduced, thereby reducing the bending radius. Since the rotating disk 18 pulls all the second sliding blocks 36 to move through the support rod 38, multiple support rollers 37 are moved in the direction of the rotating shaft 17. When the bending radius meets the use requirements, the rotating rod 30 is stopped. The self-locking nature of the screw nut makes the height of the sliding seat 31 fixed. At this time, the distance between the support roller 37 and the rotating shaft 17 is fixed, that is, the bending radius is fixed.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A metal tube bending device, comprising a base plate (1), a support column (2) is provided on the left side of the base plate (1), a placement table (3) is provided at the upper end of the support column (2), a driving roller (4) is provided at the right end of the placement table (3), a guide rod (7) is provided on the right side of the upper surface of the placement table (3), the middle part of the guide rod (7) is slidably connected to the end of a sliding plate (8), a bearing seat (11) is provided on the side of the sliding plate (8) close to the driving roller (4), the bearing seat (11) is rotatably connected to a pressure roller (12) matched with the driving roller (4), characterized in that: A support plate (5) is provided at the front and rear ends of the right side of the bottom plate (1), a first slide groove (32) is provided in the middle of the support plate (5), the first slide groove (32) is slidably connected to the two sides of the sliding seat (31), the lower part of the front support plate (5) is rotatably connected to the middle part of the rotating rod (30), a third bevel gear (29) is provided at the rear end of the rotating rod (30), the third bevel gear (29) is meshedly connected to the fourth bevel gear (28), the fourth bevel gear (28) is fixedly connected to the second screw rod (27), the middle part of the second screw rod (27) is threadedly connected to the middle part of the sliding seat (31), and the front and rear ends of the sliding seat (31) A fixed plate (16) is provided, a rotating shaft (17) is provided at the bottom of the fixed plate (16), second slide grooves (34) are evenly distributed on the outer side of the fixed plate (16) relative to the axis of the rotating shaft (17), the middle part of the second slide groove (34) is slidably connected to the second slider (36), the side of the second slider (36) close to the center of the device is rotatably connected to the two ends of the support roller (37), a third spring (35) is provided between the second slider (36) and the second slide groove (34), the side of the rotating shaft (17) close to the fixed plate (16) is rotatably connected to the rotating plate (18), the outer side of the rotating plate (18) is rotatably connected to the support rod (38 ), the other end of the support rod (38) is rotatably connected to the second slider (36), the end of the rotating shaft (17) away from the fixed disk (16) is rotatably connected to one end of the rotating plate (19), the other end of the rotating plate (19) is provided with a top plate (20), the top plate (20) is provided with a chuck (25), the middle part of the top plate (20) is threadedly connected to the middle part of the first screw rod (26), the end of the first screw rod (26) close to the support roller (37) is provided with a lifting plate (22), the two ends of the lifting plate (22) are provided with guide columns (21) slidably connected to the top plate (20), the lifting plate (22) is close to the support roller (37), and the lifting plate (22) is provided with a guide column (21) slidably connected to the top plate (20). A chuck (25) is provided on one side of the roller (37); a pressure rod (6) is provided at the right end of the placement platform (3) to cooperate with the second slider (36) at the uppermost end; when the pressure rod (6) contacts the second slider (36) at the uppermost end, the upper end of the driving roller (4) is flush with the upper end of the supporting roller (37) at the uppermost end; a driving motor (13) is provided at the front side of the right end of the placement platform (3); an output shaft of the driving motor (13) is fixedly connected to a first bevel gear (14); the first bevel gear (14) is meshedly connected to a second bevel gear (15); and the second bevel gear (15) is fixedly connected to a front end of the driving roller (4); After determining the radius of the bend, the rotating rod (30) is rotated. The rotating rod (30) drives the second screw rod (27) to rotate through the meshing third bevel gear (29) and the fourth bevel gear (28). The second screw rod (27) drives the sliding seat (31) to move upward. The sliding seat (31) drives the fixed plate (16) to move upward. At this time, the uppermost second slider (36), that is, the leftmost second slider, contacts the upper pressure rod (6), so that the second slider (36) moves downward relative to the second slide groove (34). The second slider (36) and the second slide groove (34) are connected. The spacing between the rotating shafts (17) is reduced, so that the bending radius is reduced. Since the rotating disk (18) pulls all the second sliders (36) to move through the support rod (38), the plurality of support rollers (37) are moved in the direction of the rotating shaft (17). When the bending radius meets the use requirements, the rotating rod (30) is stopped, and the height of the sliding seat (31) is fixed by the self-locking property of the screw nut. At this time, the spacing between the support rollers (37) and the rotating shaft (17) is fixed, that is, the bending radius is fixed. The drive motor (13) is started, and the drive motor (13) drives the drive roller (4) to rotate clockwise through the meshing first bevel gear (14) and the second bevel gear (15), and the drive roller (4) drives the pipe to move to the right. When the pipe moves to the upper part of the uppermost support roller (37), the rotating plate (19) is rotated counterclockwise to rotate the top plate (20) to the upper part of the uppermost support roller (37), and the first screw rod (26) is rotated to move the lifting plate (22) downward, and the chuck (25) on the front and rear sides is separated, and the pipe is passed through the lifting plate (22). The right end of the pipe is clamped by the chuck (25), and the drive motor (13) is started, so that the drive roller (4) drives the pipe to move to the right. Since the right end of the pipe is clamped by the chuck (25), the right end of the pipe can only move along the movement trajectory of the chuck (25). At this time, the chuck (25) rotates around the rotation axis (17) through the rotating plate (19), that is, the right end of the pipe continues to rotate around the rotation axis (17), and the lower part of the pipe is always in contact with the support roller (37), thereby realizing the bending process.

2. A metal tube bending device according to claim 1, characterized in that: The two sides of the lifting plate (22) are slidably connected to the first sliders (24), a second spring (23) is provided between the first slider (24) and the guide column (21), and a clamp (25) is provided on the opposite side of the two first sliders (24).

3. A metal tube bending device according to claim 1, characterized in that: A fixing plate (33) is provided at the upper end of the support plate (5); the middle portion of the fixing plate (33) is rotatably connected to the upper end of the second screw rod (27); and the lower end of the second screw rod (27) is rotatably connected to the bottom plate (1).

4. A metal tube bending device according to claim 1, characterized in that: A limit plate (10) is provided at the upper end of the guide rod (7), a first spring (9) is provided between the limit plate (10) and the sliding plate (8), and the first spring (9) is sleeved on the outside of the guide rod (7).

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