Bending device

Abstract

The utility model discloses a bending device, which belongs to the technical field of steel pipe bending and comprises a working table, a shaping column is arranged at the top of the working table, a third telescopic driving device is arranged beside the shaping column, a telescopic part of the third telescopic driving device is arranged towards the shaping column, and an arc-shaped sliding groove communicated with the inside is further formed in the top surface of the working table. The arc-shaped sliding grooves are distributed with the shaping column as the circle center, movable blocks are embedded in the arc-shaped sliding grooves, and the movable blocks are fixedly connected with bending driving parts. A circle of annular limiting groove is formed in the peripheral surface of the shaping column, the shaping column is divided into a shaping bottom column and a shaping top column along the center line of the limiting groove, the shaping bottom column is fixedly installed on the workbench, a first telescopic driving device is further arranged in the workbench, and a telescopic part of the first telescopic driving device penetrates through the workbench and the shaping bottom column; and the connecting rod is connected with the shaping support pillar. According to the scheme, the driving device controls the shaping top column and the shaping bottom column to be folded and separated, so that the steel pipe can be taken out after bending operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe bending, in particular to a bending device. Background Art

[0002] In the structure of the hydraulic system, some bent steel pipes are required. The elbows formed by bending the steel pipes are not only faster in processing speed than those using finished elbows, but also can reduce the number of joints and prevent leakage. The existing steel pipe bending device is generally composed of a shaping column and a bending part. One end of the steel pipe is fixed on the shaping column, and the other end of the steel pipe is turned by the bending part to bend the steel pipe along the shaping column. In order to prevent the steel pipe from tilting when bending around the shaping column, or to increase the contact area between the steel pipe to be bent and the shaping column, and reduce the damage rate of the steel pipe surface during bending, the shaping column is often provided with a circumferential ring-shaped limit guide groove. However, due to the existence of this groove, the steel pipe will be stuck in the groove after bending. The larger the curvature of the steel pipe, the more difficult it is to remove the steel pipe from the shaping column after being bent around the shaping column. Utility Model Content

[0003] The purpose of the present invention is to provide a bending device to solve at least one aspect of the problems and defects raised in the above background technology.

[0004] A bending device includes a workbench, a shaping column is provided on the top of the workbench, a third telescopic drive device is provided next to the shaping column, the telescopic portion of the third telescopic drive device is arranged toward the shaping column, and an arc-shaped chute communicating with the interior is further provided on the top surface of the workbench, the arc-shaped chute is arranged with the shaping column as the center, a movable block is embedded in the arc-shaped chute, and the movable block is fixedly connected to the bending drive unit;

[0005] A ring-shaped limiting groove is provided on the peripheral surface of the shaping column. The shaping column is divided into a shaping bottom column and a shaping top column along the center line of the limiting groove. The shaping bottom column is fixedly installed on the workbench. A first telescopic driving device is also provided in the workbench. The telescopic part of the first telescopic driving device passes through the workbench and the shaping bottom column and is connected to the shaping top column.

[0006] The movable bending drive part includes a second telescopic drive device and a drive member, both of which are fixedly connected to the movable block. The second telescopic drive device and the shaping column are located in the same plane, and the telescopic part of the second telescopic drive device is arranged toward the shaping column.

[0007] A first gear is provided inside the workbench, and the first gear is fixedly installed on the inner top surface of the workbench with the shaping column as the axis. The driving part includes a driving motor, and the driving motor is fixedly connected to a side of the movable block close to the inside of the workbench. The output end of the driving motor is associated with a second gear, and the second gear is engaged with the first gear.

[0008] The telescopic part of the second telescopic driving device is fixedly connected to a first limit block, and a first arc-shaped groove is formed on a side of the first limit block close to the shaping column.

[0009] The telescopic part of the third telescopic driving device is fixedly connected to a second limit block, and a second arc-shaped groove is formed on a side of the second limit block close to the shaping column.

[0010] A gap is formed between the two ends of the arc-shaped chute, and the telescopic part of the third telescopic drive device is connected to the second limit block through the gap, and the third telescopic drive device does not contact the arc-shaped chute.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This solution is achieved by splitting the shaping column into a shaping bottom column and a shaping top column along the limiting groove. The shaping bottom column is fixedly installed on the top surface of the workbench, and the shaping top column is arranged on the top of the shaping bottom column. A telescopic drive device is arranged inside the workbench. The telescopic part of the telescopic drive device passes through the workbench and the shaping bottom column and is connected to the bottom surface of the shaping top column. During the bending operation, the telescopic drive device retracts to make the shaping bottom column and the shaping top column stick together, and a limiting groove is formed at the sticking part. The steel pipe is placed in the limiting groove and bent around the shaping column. After bending, the telescopic drive device extends to separate the shaping bottom column and the shaping top column, so that the bent steel pipe can be easily taken out from between the shaping bottom column and the shaping top column. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the cross-section structure;

[0016] Figure 3 for Figure 2 Another morphological structure diagram;

[0017] Figure 4 for Figure 1 Schematic diagram of the top view structure;

[0018] Figure 5 This is a schematic diagram of the internal structure of the workbench when viewed from above;

[0019] Figure 6 This is the shape of the steel pipe after bending.

[0020] In the figure: 1, workbench; 101, arc-shaped slide; 102, first gear; 103, second gear;

[0021] 104, movable block; 2, first telescopic drive device; 201, shaping bottom column; 202, shaping top column;

[0022] 3. Second telescopic drive device; 301. First limit block; 4. Third telescopic drive device; 401. Second limit block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-6As shown, in an embodiment of the present invention, a bending device includes a workbench 1, a shaping column is provided on the top of the workbench 1, and a third telescopic drive device 4 is provided next to the shaping column. The telescopic part of the third telescopic drive device 4 is arranged toward the shaping column. The top surface of the workbench 1 is also provided with an arc-shaped slide groove 101 connected to the interior. The arc-shaped slide groove 101 is arranged with the shaping column as the center of the circle, and a movable block 104 is embedded in the arc-shaped slide groove 101, and the movable block 104 is fixedly connected to the bending drive part; a circle of annular limiting groove is provided on the circumferential surface of the shaping column, and the shaping column is divided into a shaping bottom column 201 and a shaping top column 202 along the center line of the limiting groove. The shaping bottom column 201 is fixedly installed on the workbench 1, and the shaping top column 202 is arranged at the top of the shaping bottom column 201. A first telescopic drive device 2 is also provided in the workbench 1, and the telescopic part of the first telescopic drive device 2 passes through the workbench 1 and the shaping bottom column 201, and is connected to the shaping top column 202. When in use, first move the bending drive part to the starting end of the arc slide 101, the shaping top column 202 and the shaping bottom column 201 contact each other, then place one end of the steel pipe to be bent in the limiting groove of the shaping column, start the third telescopic drive device 4, the telescopic end of the third telescopic drive device 4 will extend, and fix the steel pipe to be bent in the limiting groove, and apply force through the bending drive part, the bending drive part will move along the starting end of the arc slide 101 to the terminal end, thereby driving the steel pipe to be bent to move around the shaping column, so that the steel pipe is bent. When the bending operation is completed, start the first telescopic drive device 2 in the workbench 1, the telescopic end of the first telescopic drive device 2 will extend, and rise with the shaping top column 202, so that the shaping bottom column 201 and the shaping top column 202 are separated, so that the bent steel pipe can be easily taken out from between the shaping bottom column 201 and the shaping top column 202.

[0026] Among them, since the bending drive part is fixedly connected to the movable block 104, and the movable block 104 is arranged in the arc-shaped slide groove 101, during the bending operation, the bending drive part will move along the arc-shaped slide groove 101, so that during the bending operation, the force application position of the bending drive part on the steel pipe will change evenly with the bending. The uniform force can reduce the structural damage rate of the steel pipe due to the bending operation.

[0027] The driving force of the first telescopic driving device 2 and the third telescopic driving device 4 can be pneumatic or electric.

[0028] In one embodiment, see Figure 2As shown, the bending drive unit includes a second telescopic drive device 3 and a drive member. The second telescopic drive device 3 and the drive member are both fixedly connected to the movable block 104. The second telescopic drive device 3 and the shaping column are located in the same plane, and the telescopic portion of the second telescopic drive device 3 is arranged toward the shaping column. Since the distance between the bending drive unit and the shaping column is fixed, in order to adapt to steel pipes of different diameters, when in use, one end of the steel pipe to be bent is first fixed to the limiting groove through the third telescopic drive device 4. After moving the bending drive unit to the starting end, the second telescopic drive device 3 is first started to extend the telescopic portion of the second telescopic drive device 3 and make it close to the steel pipe to be bent, and then the bending operation is started. It should be noted that the telescopic degree of the second telescopic drive device 3 is different for different diameters of the steel pipe to be bent, and it is necessary to ensure that the telescopic portion of the second telescopic drive device 3 can be in close contact with the steel pipe to be bent.

[0029] The driving force of the second telescopic driving device 3 can be pneumatic or electric.

[0030] In one embodiment, see Figure 5 As shown, the workbench 1 is provided with a first gear 102 inside. The first gear 102 is fixedly mounted on the inner top surface of the workbench 1 with the shaping column as the axis. The driving member includes a driving motor. The driving motor is fixedly connected to a surface of the movable block 104 close to the inside of the workbench 1. The output end of the driving motor is associated with a second gear 103, which meshes with the first gear 102. The driving motor drives the second gear 103 to rotate. Since the first gear 102 is fixed, the rotation of the second gear 103 will drive the driving member to move along the arc-shaped chute 101, thereby driving the entire bending drive unit to move along the arc-shaped chute 101 to bend the steel pipe. This design can save manpower and bend the steel pipe through the driving force of the motor.

[0031] In one embodiment, see Figure 2 As shown, the telescopic portion of the second telescopic drive device 3 is fixedly connected to a first limit block 301, and the first limit block 301 has a first arc-shaped groove on its side close to the shaping column. The telescopic portion of the third telescopic drive device 4 is fixedly connected to a second limit block 401, and the second limit block 401 has a second arc-shaped groove on its side close to the shaping column. It should be noted that when the shaping top column 202 and the shaping bottom column 201 are closed, the limit groove, the first arc-shaped groove and the second arc-shaped groove are located in the same plane. The design of the arc-shaped groove can increase the contact area between the limit block and the steel pipe with bending, thereby reducing the damage rate of the steel pipe wall due to force during the bending operation.

[0032] In one embodiment, see Figure 4As shown, a gap is formed between the two ends of the arcuate chute 101. The telescopic portion of the third telescopic drive device 4 is connected to the second stopper 401 through the gap, and the third telescopic drive device 4 does not contact the arcuate chute 101. In this design, the arcuate chute 101 is arranged away from the third telescopic drive device 4, which can prevent the bending drive portion from colliding with the third telescopic drive device 4 during movement.

[0033] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A bending device, characterized in that: The invention comprises a workbench (1), wherein a shaping column is provided on the top of the workbench (1), a third telescopic drive device (4) is provided next to the shaping column, a telescopic portion of the third telescopic drive device (4) is arranged toward the shaping column, and an arc-shaped slide groove (101) communicating with the interior is also provided on the top surface of the workbench (1), the arc-shaped slide groove (101) is arranged with the shaping column as the center, a movable block (104) is embedded in the arc-shaped slide groove (101), and the movable block (104) is fixedly connected to the bending drive portion; The shaping column is provided with a ring-shaped limiting groove on its circumferential surface. The shaping column is divided into a shaping bottom column (201) and a shaping top column (202) along the center line of the limiting groove. The shaping bottom column (201) is fixedly mounted on the workbench (1). A first telescopic drive device (2) is further provided in the workbench (1). The telescopic portion of the first telescopic drive device (2) passes through the workbench (1) and the shaping bottom column (201), and is connected to the shaping top column (202).

2. A bending device according to claim 1, characterized in that: The bending drive portion comprises a second telescopic drive device (3) and a drive member, both of which are fixedly connected to the movable block (104), the second telescopic drive device (3) and the shaping column are located in the same plane, and the telescopic portion of the second telescopic drive device (3) is arranged toward the shaping column.

3. A bending device according to claim 2, characterized in that: The workbench (1) is provided with a first gear (102) inside, and the first gear (102) is fixedly mounted on the inner top surface of the workbench (1) with the shaping column as the axis. The driving member includes a driving motor, and the driving motor is fixedly connected to a surface of the movable block (104) close to the inside of the workbench (1). The output end of the driving motor is associated with a second gear (103), and the second gear (103) is meshed with the first gear (102).

4. A bending device according to claim 2, characterized in that: The telescopic portion of the second telescopic drive device (3) is fixedly connected to a first limit block (301), and a first arc-shaped groove is formed on a side of the first limit block (301) close to the shaping column.

5. The bending device according to claim 1, characterized in that: The telescopic portion of the third telescopic drive device (4) is fixedly connected to a second limit block (401), and a second arc-shaped groove is formed on a side of the second limit block (401) close to the shaping column.

6. The bending device according to claim 1, characterized in that: A gap is formed between the two ends of the arc-shaped chute (101), and the telescopic portion of the third telescopic drive device (4) is connected to the second limit block (401) through the gap, and the third telescopic drive device (4) does not contact the arc-shaped chute (101).

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