Bent pipe welding device

Abstract

The utility model relates to the field of automatic welding, in particular to an elbow welding device which comprises a workbench and a lifting module, a first support, a three-jaw chuck and a controller are arranged on the upper side of the workbench, a pair of roller carriers is arranged on the first support, one roller carrier is located on the edge of the workbench, and the other roller carrier is located on the lifting module. The lifting module is provided with a first lifting unit and a mechanical arm, the first lifting unit is used for installing the other pair of roller carriers, and the mechanical arm is used for clamping the welding gun. According to the device, the bent section and the linear section to be welded are clamped together through the upper pair of roller carriers and the lower pair of roller carriers, and the clamping mode is very firm; and the bending section swings in the area outside the workbench, and the movement path does not conflict with the position where the lifting module is located. When the bent pipe is rotated, only one-way rotation is needed, the three-jaw chuck can clamp the end of the linear section, and due to the fact that the three-jaw chuck is large in self weight and strong in clamping force, even if the gravity center of the bent section changes up and down, the bent pipe can still maintain the stable rotating speed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the automatic welding field, and particularly relates to a bent pipe welding device. BACKGROUND

[0002] The bent pipe is composed of a curved section and a straight section. In the production process of the bent pipe, in order to prolong the length of the bent pipe, the curved section and the straight section are generally placed in a clamp and locked, and then welded. However, the conventional clamp cannot fully fix the bent pipe, and when the bent pipe rotates around its axis for one turn, the center of gravity of the curved section is repeatedly changed, which puts higher requirements on the stability of the clamp.

[0003] Under the prior art conditions, the bent pipe is fixed, and then the welding torch is fixed on a multi-axis mechanical arm, and the welding is completed by rotating the welding torch around the weld for one turn by relying on the multi-axis mechanical arm. However, in some cases, the bent pipe needs to be turned over, which greatly increases the operation amount of the welding process, and the worker needs to repeatedly adjust the bent pipe, which consumes time and energy, and finally leads to low welding productivity. SUMMARY

[0004] The utility model aims at providing a bent pipe welding device with firm clamping mode.

[0005] To achieve the above-mentioned purpose, the utility model provides a bent pipe welding device, which comprises: a workbench, the upper side of the workbench is provided with a first support, a three-jaw chuck and a controller, the upper side of the first support is provided with a pair of roller frames for supporting the pipeline, the roller frame comprises two vertical columns and a roller at the end of the vertical column, one roller frame is less than 10cm away from the left edge of the workbench, and the other roller frame is located in the central region of the workbench, the three-jaw chuck is located at the right edge of the workbench and is used for clamping the end face of the pipeline and driving the pipeline to rotate; a lifting module, the lifting module comprises two first lifting units and a mechanical arm, the mechanical arm is located between the two first lifting units, the movable part of the two first lifting units is provided with a second support and its roller frame, the first lifting unit drives the corresponding roller frame to lift, and the roller frames at different heights are close to each other for clamping the pipeline, when the pipeline rotates, the rollers of the roller frames are passively rotated, and the movable part of the mechanical arm is provided with a welding torch.

[0006] As an improvement of the above-mentioned scheme, the bottom of the first support is provided with a second lifting unit, the second lifting unit drives the first support to lift, and the height of the two roller frames is changed.

[0007] As an improvement of the above-mentioned scheme, the first lifting unit and the second unit are both electric screw jacks.

[0008] As an improvement of the above scheme, the welding device further comprises a controller and an interactive panel, the controller is electrically connected with the interactive panel, the first lifting unit, the mechanical arm, the welding torch, the three-jaw chuck and the second lifting unit, and the interactive panel is arranged on the side of the three-jaw chuck.

[0009] As an improvement of the above scheme, at least one of the roller frames is provided with a pressure sensor, and the controller is electrically connected with the pressure sensor.

[0010] As an improvement of the above scheme, the mechanical arm adopts a three-axis guide rail, so that the welding torch can move in three directions of XYZ.

[0011] The device clamps the curved section and the straight section to be welded by means of the upper and lower roller frames, and the clamping mode is very firm; and the curved section swings in the area outside the workbench, and the movement path does not conflict with the position of the lifting module. When the rotary elbow is rotated, the three-jaw chuck clamps the end of the straight section, and since the three-jaw chuck has a large weight and strong clamping force, even if the center of gravity of the curved section changes up and down, the elbow can still maintain a stable rotation speed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of a welding device in an embodiment.

[0013] Marked: 11, workbench; 12, three-jaw chuck; 13, interactive panel; 14, lifting module; 21, first support; 22, second support; 31, first lifting unit; 32, mechanical arm; 40, roller frame. DETAILED DESCRIPTION

[0014] In the description of the utility model, it should be explained that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation on the utility model.

[0015] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If the terms "first", "second", "third" are described, they are only for the purpose of description and for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0016] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the present application.

[0017] Referring to Figure 1 The utility model discloses a pipe welding device, including: workbench 11 and lifting module 14. The upper side of workbench 11 is provided with first support 21, three jaw chuck 12 and controller, the upper side of first support 21 is provided with a pair of roller frame 40 for supporting pipeline, roller frame 40 includes two uprights and the roller at upright end, one roller frame 40 with the left side edge distance of workbench 11 is less than 10cm, another roller frame 40 is located in the central region of workbench 11, three jaw chuck 12 is located in the right side edge of workbench 11, for clamping the end surface of pipeline and driving pipeline rotation. Lifting module 14 includes two first lifting units 31 and a mechanical arm 32, the mechanical arm 32 is located between two first lifting units 31, and the movable part of two first lifting units 31 is provided with second support 22 and its roller frame 40, first lifting unit 31 drives corresponding roller frame 40 to lift, and this group of roller frame 40 at different heights is close to each other for clamping the pipeline, when the pipeline rotates, the roller of roller frame 40 is driven to rotate, and the movable part of mechanical arm 32 is provided with a welding gun.

[0018] The device clamps the curved section and the straight section to be welded by means of the upper and lower pairs of roller frames 40, and the clamping is very firm. The curved section swings in the area outside the workbench 11, and the movement path does not conflict with the position of the lifting module 14. When rotating the bent pipe, only one-way rotation is needed, and the three-jaw chuck 12 clamps the end of the straight section. Since the three-jaw chuck 12 has a large weight and strong clamping force, even if the center of gravity of the curved section changes up and down, the bent pipe can still maintain a stable rotation speed.

[0019] As an improvement of the above-mentioned scheme, the second support 22 is flat, and is used to install the inverted roller frame 40.

[0020] As an improvement of the above-mentioned scheme, the bottom of the first support 21 is provided with a second lifting unit, the second lifting unit drives the first support 21 to lift and change the height of the two roller frames 40. By using the above-mentioned scheme, the roller frame 40 can support pipes with different diameters, so that the center of the pipe is aligned with the center of the three-jaw chuck 12.

[0021] As an improvement of the above-mentioned scheme, the first lifting unit 31 and the second unit both use electric screw jacks. In an embodiment, the surface of the workbench 11 is provided with a sink, and the four peripheral edges of the first support 21 are fitted with the edges of the sink. At this time, the first support 21 is limited and can only lift in the vertical direction. The second lifting unit is placed between the first support 21 and the sink.

[0022] As an improvement of the above-mentioned scheme, the welding device further comprises a controller and an interactive panel 13, the controller is electrically connected with the interactive panel 13, the first lifting unit 31, the mechanical arm 32, the welding gun, the three-jaw chuck 12 and the second lifting unit, and the interactive panel 13 is arranged on the side of the three-jaw chuck 12.

[0023] As an improvement of the above-mentioned scheme, at least one of the roller frames 40 is provided with a pressure sensor, and the controller is electrically connected with the pressure sensor. By using the above-mentioned scheme, the first lifting unit 31 can avoid applying too much pressure.

[0024] As an improvement of the above-mentioned scheme, the mechanical arm 32 uses a three-axis guide rail, so that the welding gun can move in XYZ three directions. In an embodiment, the curved section and the straight section are first uniformly spot-welded, and then the two are installed on the workbench 11 to complete subsequent circumferential seam welding. At this time, the mechanical arm 32 does not need to repeatedly displace. In another embodiment, the curved section and the straight section are fixed to the workbench 11, the mechanical arm 32 drives the welding gun to move in an arc shape, completes the welding of a circular arc, and then the three-jaw chuck 12 starts to rotate the entire bent pipe, so that the mechanical arm 32 no longer moves greatly.

[0025] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The exemplary embodiments were chosen and described in order to explain the principles of the present application and its practical application and to allow others skilled in the art to understand the present application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the present application be defined by the claims and their equivalents.

Claims

1. A pipe bending and welding apparatus characterized by comprising: The utility model relates to a welding device for pipe, which comprises: a workbench, the upper side of the workbench is provided with a first support, a three-jaw chuck and a controller, the upper side of the first support is provided with a pair of roller racks for supporting the pipe, the roller rack comprises two upright columns and rollers at the end of the upright columns, one roller rack is less than 10 cm away from the left edge of the workbench, and the other roller rack is located in the central area of the workbench, the three-jaw chuck is located at the right edge of the workbench and is used for clamping the end face of the pipe and driving the pipe to rotate; a lifting module, the lifting module comprises two first lifting units and a mechanical arm, the mechanical arm is located between the two first lifting units, the movable part of each first lifting unit is provided with a second support and a roller rack, the first lifting unit drives the corresponding roller rack to lift, the roller racks at different heights are close to each other for clamping the pipe, when the pipe rotates, the rollers of the roller racks are passively rotated, and the movable part of the mechanical arm is provided with a welding gun.

2. The tube bending and welding apparatus of claim 1, wherein: The bottom of the first support is provided with a second lifting unit, the second lifting unit drives the first support to lift, and the height of the two roller racks is changed.

3. The tube bending and welding apparatus of claim 2, wherein: The first lifting unit and the second lifting unit both adopt electric screw jacks.

4. The tube bending and welding apparatus of claim 3, wherein: The welding device further comprises a controller and an interactive panel, the controller is electrically connected with the interactive panel, the first lifting unit, the mechanical arm, the welding gun, the three-jaw chuck and the second lifting unit, and the interactive panel is arranged on the side of the three-jaw chuck.

5. The tube bending and welding apparatus of claim 4, wherein: At least one roller rack is provided with a pressure sensor, and the controller is electrically connected with the pressure sensor.

6. The tube bending and welding apparatus of claim 1, wherein: The mechanical arm adopts three-axis guide rails, so that the welding gun can move in three directions of XYZ.

Images