Workpiece positioning structure of special hydraulic top bending machine

Abstract

The utility model discloses a workpiece positioning structure of a hydraulic special top bending machine, which comprises a support frame and a positioning mechanism, a hydraulic cylinder is mounted in the support frame, an arc-shaped top block is fixedly welded at the output end of the hydraulic cylinder, the positioning mechanism comprises a moving component and two clamping components, the moving component is arranged at the upper end of the support frame, and the two clamping components are fixedly welded at the lower end of the support frame. The two clamping assemblies are connected with the moving assembly through connecting parts. According to the supporting frame, the steel pipe can be positioned and clamped through the positioning mechanism, the situation that the machining effect is affected due to the fact that the steel pipe deviates in the bending process is avoided, the arc-shaped ejector block can be driven to move to bend the steel pipe through the servo motor, and the positioning mechanism can clamp and position the steel pipe through the two clamping assemblies. And through the arrangement of the moving assembly, the distance between the two clamping assemblies can be adjusted, so that steel pipes with different diameters can be bent, and adjustment can be conducted according to the bending angle.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a workpiece positioning structure of a special hydraulic bending machine. Background Technique

[0002] The market demand for steel pipes used in machinery and construction is increasing, and the performance requirements are constantly improving. The pressing and bending of steel pipes are widely used in installation projects. However, if the processes of pressing and bending are carried out manually, it is time-consuming and laborious, and the bending angle and arc are not standard. Currently, there are mainly two types of pipe bending equipment: rotary bending machines and top bending machines.

[0003] For rotary bending machines, most of them are numerically controlled in the market. It is obtained by rotating the pipe to be bent on the bending die, and directly detecting the rotation angle of the bending die. An angle sensor can realize angle monitoring. However, its fixtures and accessories are complex, the equipment volume is large, the cost is high, the pipe bending force is small, it is troublesome to replace the die, and the bending die of this type of pipe bending machine cannot adopt anti-deformation to control the quality of the pipe cross-section, otherwise the pipe will get stuck in the bending die and it is not easy to remove the die.

[0004] For top bending machines, only manual ones are available in the market. Although the volume is small, when bending steel pipes, the steel pipes cannot be fixed, and the steel pipes are easy to fall off, affecting the processing effect.

[0005] Therefore, the technical personnel in this field provide a workpiece positioning structure of a special hydraulic bending machine to solve the problems raised in the above background technique. Content of the Utility Model

[0006] The purpose of the utility model is to provide a workpiece positioning structure of a special hydraulic bending machine to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A workpiece positioning structure of a special hydraulic bending machine, comprising:

[0009] A support frame, a hydraulic cylinder is installed inside the support frame, and an arc-shaped top block is fixedly welded to the output end of the hydraulic cylinder; and

[0010] A positioning mechanism, the positioning mechanism includes a moving component and two clamping components, the moving component is arranged at the upper end of the support frame, and the two clamping components are connected to the moving component through a connecting part.

[0011] Preferably, the moving component includes a servo motor, a first bidirectional threaded rod, and a connecting rod. First moving grooves for the installation of the connecting rod and the rotational connection of the first bidirectional threaded rod are formed on both sides of the support frame. The first bidirectional threaded rod and both ends of the connecting rod are respectively threadedly connected and slidably connected with first moving blocks. The servo motor is installed at one end of the support frame, and the output end of the servo motor is connected to the extended end of the first bidirectional threaded rod passing through the first moving groove.

[0012] Preferably, the connecting portion includes a support rod and a rotating ring. The support rod is fixedly installed between the first moving blocks, and the rotating ring is rotationally connected to the support rod.

[0013] Preferably, a limiting ring is welded on the support rod, and a limiting groove for the rotational connection of the limiting ring is formed on the rotating ring.

[0014] Preferably, the clamping component includes a support block and an arc-shaped clamping plate. The support block is fixedly connected to the rotating ring. The support block is connected to the arc-shaped clamping plate through an adjusting portion. A plurality of balls are rotatably installed on one side of each arc-shaped clamping plate.

[0015] Preferably, the adjusting portion includes a second bidirectional threaded rod and two second moving blocks. A second moving groove for the second bidirectional threaded rod to drive the two second moving blocks to move relatively is formed in the support block, and one end of the second bidirectional threaded rod is connected to a driving portion.

[0016] Preferably, the driving portion includes a turntable and a turning handle. The turning handle is eccentrically installed on the turntable, and the turntable is connected to the extended end of the second bidirectional threaded rod passing through the second moving groove.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. Through the setting of the positioning mechanism of the support frame of the present utility model, the steel pipe can be positioned and clamped, avoiding the deviation of the steel pipe during the bending process and affecting the processing effect. The setting of the servo motor can drive the arc-shaped top block to move to bend the steel pipe for use.

[0019] 2. Through the setting of the two clamping components of the positioning mechanism of the present utility model, the steel pipe can be clamped and positioned. Through the setting of the moving component, the distance between the two clamping components can be adjusted, so as to adjust the bending of steel pipes with different diameters and adjust according to the bending angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a workpiece positioning structure of a special hydraulic bending machine in an embodiment of the present application;

[0021] Figure 2 It is a front cross-sectional structural diagram of a workpiece positioning structure of a special hydraulic bending machine in an embodiment of the present application;

[0022] Figure 3 This is a schematic side sectional view of a workpiece positioning structure of a special hydraulic bending machine in an embodiment of the present application.

[0023] In the figure: 1, support frame; 2, hydraulic cylinder; 3, arc-shaped top block; 4, positioning mechanism; 41, moving component; 411, servo motor; 412, first bidirectional threaded rod; 413, connecting rod; 414, first moving groove; 415, first moving block; 42, clamping component; 421, support block; 422, arc-shaped clamping plate; 423, ball; 43, adjusting part; 431, second bidirectional threaded rod; 432, second moving block; 433, second moving groove; 44, driving part; 441, turntable; 442, turning handle; 5, connecting part; 51, support rod; 52, rotating ring; 53, limiting ring; 54, limiting groove. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-3 , the present invention provides a technical solution:

[0026] A workpiece positioning structure of a special hydraulic bending machine, comprising:

[0027] A support frame 1, in which a hydraulic cylinder 2 is installed, and the output end of the hydraulic cylinder 2 is fixedly welded with an arc-shaped top block 3; and

[0028] A positioning mechanism 4, the positioning mechanism 4 includes a moving component 41 and two clamping components 42, the moving component 41 is arranged at the upper end of the support frame 1, and the two clamping components 42 are connected to the moving component 41 through a connecting part 5.

[0029] In this embodiment, when positioning and clamping a steel pipe, the moving component 41 drives the two clamping components 42 to adjust the distance, so as to bend steel pipes with different diameters, and the distance between the two clamping components 42 can also be adjusted according to the bending angle. Then, the two clamping components 42 are adjusted to clamp and limit the steel pipe, and the two clamping components 42 can be adjusted to clamp and position steel pipes with different diameters, avoiding the phenomenon of steel pipe deviation during the bending process;

[0030] When bending a steel pipe, the hydraulic cylinder 2 drives the arc-shaped top block 3 to move, bending the steel pipe. During the bending process, through the setting of the connecting part 5, when bending the steel pipe, the clamping assembly 42 can rotate and adjust, avoiding affecting the bending effect of the steel pipe.

[0031] Specifically, the moving assembly 41 includes a servo motor 411, a first bidirectional threaded rod 412, and a connecting rod 413. On both sides of the support frame 1, there are first moving slots 414 for the installation of the connecting rod 413 and the rotational connection of the first bidirectional threaded rod 412. The two ends of the first bidirectional threaded rod 412 and the connecting rod 413 are respectively threadedly connected and slidably connected with first moving blocks 415. The servo motor 411 is installed at one end of the support frame 1, and the output end of the servo motor 411 is connected to the extended end of the first bidirectional threaded rod 412 passing through the first moving slot 414.

[0032] The connecting part 5 includes a support rod 51 and a rotating ring 52. The support rod 51 is fixedly installed between the first moving blocks 415. The rotating ring 52 is rotatably connected to the support rod 51. A limiting ring 53 is welded on the support rod 51, and a limiting slot 54 for the rotational connection of the limiting ring 53 is provided on the rotating ring 52.

[0033] When adjusting the distance between the two clamping assemblies 42, the servo motor 411 drives the two first moving blocks 415 to move relatively in the first moving slot 414 through the first bidirectional threaded rod 412. During the movement, through the support rod 51, the other two first moving blocks 415 are driven to move on the connecting rod 413. While the first moving blocks 415 support the support rod 51, they can drive the two support rods 51 to move relatively, thereby adjusting the distance between the two clamping assemblies 42, and performing top bending adjustment and top bending angle adjustment of the distance between the clamping assemblies 42 for steel pipes of different diameters.

[0034] During the top bending process, the bending of the steel pipe drives the clamping assembly 42 to rotate. The clamping assembly 42 rotates on the support rod 51 through the rotating ring 52 so that the steel pipe can be bent. During the rotation of the rotating ring 52, the limiting ring 53 is rotatably connected in the limiting slot 54, which can limit the rotation of the rotating ring 52.

[0035] Furthermore, the clamping assembly 42 includes a support block 421 and an arc-shaped clamping plate 422. The support block 421 is fixedly connected to the rotating ring 52. The support block 421 is connected to the arc-shaped clamping plate 422 through an adjusting part 43. A number of rolling balls are rotatably installed on one side of the arc-shaped clamping plate 422.

[0036] The adjusting part 43 includes a second bidirectional threaded rod 431 and two second moving blocks 432. A second moving slot 433 for the second bidirectional threaded rod 431 to drive the two second moving blocks 432 to move relatively is provided in the support block 421, and a driving part 44 is connected to one end of the second bidirectional threaded rod 431.

[0037] The driving part 44 includes a turntable 441 and a turning handle 442. The turning handle 442 is eccentrically installed on the turntable 441, and the turntable 441 is connected to the extending end of the second bidirectional threaded rod 431 passing through the second moving groove 433.

[0038] When clamping the steel pipe, rotate the turning handle 442. The turning handle 442 drives the second bidirectional threaded rod 431 to rotate through the turntable 441. The second bidirectional threaded rod 431 drives the two second moving blocks 432 to move in the second moving groove 433, so as to adjust the distance between the two arc-shaped clamping plates 422 according to the diameter of the steel pipe. Through the setting of the turning handle 442, the second bidirectional threaded rod 431 can be rotated more easily. The two arc-shaped clamping plates 422 clamp the steel pipe to prevent the steel pipe from slipping out from the left and right sides during the bending process. When the two arc-shaped clamping plates 422 clamp the steel pipe, the balls on the inner sides of the two arc-shaped clamping plates 422 are in contact connection with the outer wall of the steel pipe, so that the steel pipe can be in a movable state when the steel pipe is bent, avoiding the influence of fixed clamping on the bending of the steel pipe.

[0039] The working principle of the present application is as follows:

[0040] When clamping and positioning the steel pipe, according to the diameter of the steel pipe, first adjust the distance between the two clamping components 42. The servo motor 411 drives the two first moving blocks 415 to move relatively in the first moving groove 414 through the first bidirectional threaded rod 412, so as to drive the two clamping components 42 to move relatively and adjust to a suitable position. Then rotate the turning handle 442. The turning handle 442 drives the second bidirectional threaded rod 431 to rotate through the turntable 441. The second bidirectional threaded rod 431 drives the two second moving blocks 432 to move in the second moving groove 433, so as to adjust the distance between the two arc-shaped clamping plates 422 to position and clamp the steel pipe part, avoiding the steel pipe falling off and shifting during the bending process and affecting the processing. When the two arc-shaped clamping plates 422 clamp the steel pipe, the balls on the inner sides of the two arc-shaped clamping plates 422 are in contact connection with the outer wall of the steel pipe;

[0041] When bending the steel pipe, the hydraulic cylinder 2 drives the arc-shaped top block 3 to move to bend the steel pipe. During the bending process, the two clamping components 42 rotate on the support rod 51 through the rotating ring 52, avoiding affecting the bending effect of the steel pipe.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece positioning structure for a hydraulic special bending machine, characterized in that: include: A support frame (1), wherein a hydraulic cylinder (2) is installed in the support frame (1), and an arc-shaped top block (3) is fixedly welded to the output end of the hydraulic cylinder (2); and A positioning mechanism (4), the positioning mechanism (4) comprising a moving component (41) and two clamping components (42), the moving component (41) being arranged at the upper end of the support frame (1), and the two clamping components (42) being connected to the moving component (41) via a connecting portion (5).

2. The workpiece positioning structure of a hydraulic special bending machine according to claim 1 is characterized in that: The moving assembly (41) comprises a servo motor (411), a first bidirectional threaded rod (412) and a connecting rod (413); first moving grooves (414) for mounting the connecting rod (413) and rotatably connecting the first bidirectional threaded rod (412) are provided on both sides of the support frame (1); first moving blocks (415) are respectively threadedly connected and slidably connected at both ends of the first bidirectional threaded rod (412) and the connecting rod (413); the servo motor (411) is mounted on one end of the support frame (1), and the output end of the servo motor (411) is connected to an extension end of the first bidirectional threaded rod (412) that passes through the first moving groove (414).

3. The workpiece positioning structure of a hydraulic special top bending machine according to claim 1 is characterized in that: The connecting part (5) comprises a support rod (51) and a rotating ring (52); the support rod (51) is fixedly mounted between the first moving blocks (415); and the rotating ring (52) is rotatably connected to the support rod (51).

4. The workpiece positioning structure of a hydraulic special top bending machine according to claim 3 is characterized in that: A limiting ring (53) is welded on the support rod (51), and a limiting groove (54) for the limiting ring (53) to be rotatably connected is provided on the rotating ring (52).

5. The workpiece positioning structure of a hydraulic special top bending machine according to claim 3 is characterized in that: The clamping assembly (42) comprises a support block (421) and an arc-shaped clamping plate (422); the support block (421) is fixedly connected to the rotating ring (52); the support block (421) is connected to the arc-shaped clamping plate (422) via an adjusting portion (43); and a plurality of balls (423) are rotatably mounted on one side of the arc-shaped clamping plate (422).

6. The workpiece positioning structure of a hydraulic special bending machine according to claim 5 is characterized in that: The adjusting portion (43) comprises a second bidirectional threaded rod (431) and two second moving blocks (432); a second moving groove (433) is provided in the supporting block (421) for the second bidirectional threaded rod (431) to drive the two second moving blocks (432) to move relative to each other; and one end of the second bidirectional threaded rod (431) is connected to the driving portion (44).

7. The workpiece positioning structure of a hydraulic special top bending machine according to claim 6 is characterized in that: The driving part (44) comprises a rotating disk (441) and a rotating handle (442). The rotating handle (442) is eccentrically mounted on the rotating disk (441), and the rotating disk (441) is connected to an extended end of the second bidirectional threaded rod (431) passing through the second movable groove (433).

Images