Automatic welding clamping device in circumferential direction of pipeline

Abstract

The automatic welding clamping device in the circumferential direction of the pipeline comprises a welding frame of a frame-shaped structure, clamping mechanisms for clamping and axially adjusting the pipeline are correspondingly arranged on the symmetrical vertical side walls of the welding frame, and the clamping mechanisms are rotationally connected with the vertical side walls; and a welding mechanism corresponding to a to-be-welded pipeline port is further arranged on the bottom side of the welding frame. When the welding clamping device is used for welding a pipeline, the axial displacement of the pipeline can be adjusted, so that ports of the butt-welded pipeline can be close and connected, the difficulty existing when the pipeline is manually driven to be close on a workbench at present is solved, axial mechanical adjustment is carried out through a clamping mechanism, and the butt joint accuracy of the pipeline can be improved. And meanwhile, the pipeline can be driven to rotate in the circumferential direction, then continuous circumferential welding operation can be completed, the problems of difficulty and welding discontinuity caused by the fact that a pipe body needs to be rotated frequently when an existing workbench is used are solved, and therefore the welding efficiency and quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of HVAC pipeline welding for building installation, and in particular to an automatic welding clamp along the circumference of the pipeline. Background Art

[0002] The installation of HVAC pipes in buildings is a vital part of construction projects. It involves the normal operation of heating, ventilation and air conditioning systems, which is directly related to the comfort and energy efficiency of buildings. HVAC pipes are pipe systems used for heating, ventilation and air conditioning systems in buildings. During the installation process, it is necessary to strictly control the installation quality issues of the construction process to ensure the normal operation and long-term use of the HVAC pipe system.

[0003] At present, according to the design requirements, the thickness and specification size of the HVAC pipeline can be changed according to the requirements. In the actual installation process of the HVAC pipeline, the HVAC pipeline needs to be welded and connected. At present, in order to improve the welding quality and operation efficiency, a clamping device is usually used to clamp the butt-welded pipes separately, so that the pipe ends are connected, and the pipe welding and connection operation can be performed. However, when the HVAC pipeline is currently welded, since the clamp is mostly fixed on the flat workbench by welding, the pipe is also placed on the workbench. Before the pipe is clamped by the clamp, the pipe ends on both sides must be close to each other to ensure the strength and sealing after welding. However, this operation mode is not easy to adjust the axial direction of the pipeline for pipe port docking. At the same time, since the welding of the pipe end is circumferential continuous welding, the pipe clamped on the workbench is not convenient for circumferential adjustment. Usually, after welding one end arc length, it is necessary to loosen the clamp of the pipe, and then rotate the pipe by a certain angle, and weld again. In this way, the circumferential welding integrity of the pipe can be completed after multiple pipe adjustments. Therefore, the current pipeline welding operation still has certain limitations. Summary of the invention

[0004] In response to the above-mentioned problems, the present application aims to provide an automatic welding clamp along the circumference of the pipeline, which can adjust the axial displacement of the pipeline and realize the circumferential continuous welding operation of the pipeline, thereby solving the difficulty of frequently rotating the pipe body when using the workbench and the discontinuity problem of welding, thereby improving the efficiency and quality of welding.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: an automatic welding clamp along the circumference of the pipeline, characterized in that: the welding clamp includes a welding frame with a frame-type structure, and a clamping mechanism for clamping and axially adjusting the pipeline is correspondingly arranged on the symmetrical vertical side walls of the welding frame, and the clamping mechanism is rotationally connected to the vertical side walls, and a welding mechanism corresponding to the pipeline port to be welded is also arranged on the bottom side of the welding frame.

[0006] Preferably, the clamping mechanism comprises a telescopic member which is rotatably arranged on the vertical side wall of the welding frame and can be adjusted axially, and a clamping cylinder which is sleeved with a tube body is arranged at the end of the telescopic member.

[0007] Preferably, clamping plates abutting against the circumferential surface of the pipe are arranged at circumferential intervals in the clamping cylinder, and a conical body abutting against the pipe port and driving the pipe to be axially clamped is arranged on the inner bottom surface of the clamping cylinder.

[0008] Preferably, a protective plate covering the butt-welded pipe port is provided on the top side of the welding frame, and a dust collector head is provided inside the protective plate.

[0009] The beneficial effects of the present application are: when the welding clamp is used to weld the pipeline, the axial displacement of the pipeline can be adjusted so that the ports of the butt-welded pipeline can be close to each other, solving the difficulty of manually driving the pipeline close on the workbench. The axial mechanical adjustment is performed through the clamping mechanism, which can also improve the accuracy of pipeline docking. At the same time, the pipeline can also be driven to rotate circumferentially, thereby completing continuous circumferential welding operations, solving the difficulty of frequently rotating the pipe body when using the workbench, as well as the discontinuity problem of welding, thereby improving the efficiency and quality of welding. The harmful gases generated during the welding process can be absorbed and processed in time, which plays a protective role in the welding environment and prevents the staff from causing damage to their bodies by working in this environment for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional diagram of the automatic welding gripper of the present application.

[0011] Figure 2 This is a side view of the clamping tube for this application.

[0012] Figure 3 This is a diagram showing a structure for axially positioning a pipe in which a cone is arranged on the inner bottom surface of the clamping tube in the present application.

[0013] Figure 4 This is the second three-dimensional diagram of the automatic welding gripper for this application.

[0014] In the figure: 6-telescopic adjustment rod; 7-welder; 8-drive shaft; 9-transmission belt; 10-drive motor; 11-dust suction pump pipe; 12-dust suction box; 13-pipeline to be welded. DETAILED DESCRIPTION

[0015] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Refer to the attached Figures 1 to 4The welding fixture shown in the figure is an automatic welding fixture along the circumference of a pipeline, and the welding fixture comprises a welding frame 1 (such as Figure 1 The structure shown in the figure is shown in the figure. A clamping mechanism for clamping and axially adjusting the pipe is correspondingly arranged on the symmetrical vertical side walls of the welding frame 1. The clamping mechanisms on both sides of the welding frame 1 can clamp the pipes on both sides to be welded respectively, and can adjust the axial displacement of the pipes after clamping, so that the ports of the pipes to be welded can be close to each other, which solves the difficulty of manually driving the pipes to be close on the workbench. The axial mechanical adjustment is performed by the clamping mechanism, and the accuracy of pipe docking can be improved.

[0017] After the pipe is clamped and axially adjusted for docking by the clamping mechanism, the clamping mechanism is rotationally connected to the vertical side wall of the (welding frame 1), which can drive the pipe in the clamped (to be welded) state to rotate circumferentially, thereby completing continuous circumferential welding operations, solving the difficulty of frequently rotating the pipe body when using the workbench and the problem of discontinuity in welding.

[0018] In the state where the clamped pipe body is driven to rotate circumferentially, in order to realize the circumferential welding operation of the pipe, a welding mechanism corresponding to the pipe port to be welded is also provided on the bottom side of the welding frame 1. Figure 1 As shown, the welding frame 1 includes a telescopic adjustment rod arranged at the center of the bottom plate, and a welder (such as a welding gun) is arranged at the top thereof. Through the adjustment of the telescopic adjustment rod, the welder can be connected to the port of the butted pipe. In the process of driving the pipe to rotate circumferentially, the welder can achieve complete and continuous circumferential welding operation on the pipe. Through the adjustment of the telescopic adjustment rod, it can be adapted to the welding operation of pipes with different pipe diameters.

[0019] Specifically, Figure 1 As shown, the clamping mechanism includes a telescopic member that is rotatably arranged on the vertical side wall of the welding frame 1 and can be adjusted axially, and a clamping tube 2 with a tube body is arranged at the end of the telescopic member. The telescopic member is preferably a telescopic adjustment rod, one end of which is rotatably connected to the side plate of the welding frame 1, and the other end can be adjusted circumferentially. When clamping the pipeline, the pipeline to be welded is respectively inserted into the clamping tubes 2 on both sides for clamping and tightening, and then the clamping tube is driven by the telescopic adjustment rod to drive the pipeline ports on both sides to approach and connect, and then the height of the welder is adjusted, and then the telescopic adjustment rod is driven to drive the pipeline to rotate, so that continuous circumferential welding operation can be achieved through the welder.

[0020] In order to facilitate the synchronous rotation of the pipe bodies on both sides during the welding process, Figure 1As shown, a driving shaft is preferably rotatably provided on the top of the symmetrical side plate of the welding frame 1, and the telescopic adjustment rod on each side is connected to the driving shaft through a transmission belt, and a driving motor is arranged at one end of the driving shaft. By driving the driving motor, the synchronous rotation of the pipelines on both sides can be achieved, thereby further improving the welding quality and welding efficiency.

[0021] To facilitate the rapid clamping of the pipe in the clamping tube 2, Figure 2 As shown, the clamping tube 2 is provided with clamping plates 3 that abut against the circumferential surface of the pipe at circumferential intervals. The clamping plates 3 are preferably rotatably connected to the inner wall of the clamping tube 2 through a threaded sleeve. After the pipe is inserted into the clamping tube 2, the threaded sleeve is rotated so that the clamping plates 3 can abut against the pipe, thereby realizing a quick clamping operation of the pipe.

[0022] In order to ensure the coaxiality of the butted pipes and avoid axial deviation that may affect the welding strength and sealing, Figure 3 As shown, a conical body 21 is provided on the inner bottom surface of the clamping barrel 2, which abuts against the pipe port and drives the pipe to be axially clamped. During operation, after one end of the pipe is inserted into the clamping barrel 2, the pipe end is in circumferential contact with the conical body 21, and the pipe is clamped in a horizontal state by the clamping plate 3, which can effectively ensure the coaxiality of the pipe and the clamping barrel 2, as well as the coaxial accuracy with the butt pipe, thereby ensuring the welding quality of the pipe.

[0023] In order to collect the smoke generated during welding and reduce the harm of smoke, such as Figure 1 As shown, a protective plate 4 is provided on the top side of the welding frame 1 to cover the pipe port to be welded, which is preferably a semicircular arc structure for sleeve pipes, and a dust head 5 is provided inside the protective plate 4. The dust head 5 is connected to a dust pump pipe and a dust box (for filtering smoke). The smoke generated during pipe welding is sucked into the dust box through the dust head 5 for filtration and discharge, so as to avoid physical damage to the workers in this working environment for a long time.

[0024] The principle of the present application is: when welding pipes, firstly, the pipes to be welded are respectively inserted into the clamping tubes 2 on both sides, and the ends of the pipes are circumferentially contacted with the cone inside the clamping tube 2, and then the threaded sleeve is driven to make the clamp clamp the pipe horizontally to ensure the coaxiality of the pipe clamping, and then the pipe is driven axially by the telescopic adjustment rod to connect with the pipe on the opposite side, and then the position height of the welder is adjusted. After the adjustment is completed, the pipe is driven to rotate by the driving motor to realize continuous circumferential welding operation, and at the same time, the smoke generated by welding is effectively collected and processed by the dust suction head 5.

[0025] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. An automatic welding gripper along the circumference of a pipeline, characterized by: The welding clamp comprises a welding frame (1) of a frame-type structure, on the symmetrical vertical side walls of the welding frame (1) there are correspondingly arranged clamping mechanisms for clamping and axially adjusting the pipeline, and the clamping mechanisms are rotationally connected to the vertical side walls, and a welding mechanism corresponding to the pipeline port to be welded is also arranged on the bottom side of the welding frame (1).

2. The automatic welding gripper according to claim 1, characterized in that: The clamping mechanism comprises a telescopic member which is rotatably arranged on a vertical side wall of a welding frame (1) and can be adjusted axially, and a clamping cylinder (2) which is sleeved with a tube body is arranged at the end of the telescopic member.

3. The automatic welding gripper according to claim 2, characterized in that: Clamping plates (3) that abut against the circumferential surface of the pipeline are arranged at intervals along the circumferential direction in the clamping cylinder (2), and a conical body (21) that abuts against the pipeline port and drives the pipeline to be clamped axially is arranged on the inner bottom surface of the clamping cylinder (2).

4. The automatic welding gripper according to claim 3, characterized in that: A protective plate (4) is arranged on the top side of the welding frame (1) to cover the pipe port to be butt-welded, and a dust suction head (5) is arranged inside the protective plate (4).

Images