Orthogonal circular tube intersecting line welding equipment

Abstract

A kind of orthogonal circular tube intersecting line welding equipment, including workbench, still fixedly installed with horizontal front-rear direction B axis on workbench, B axis is driven by motor, and the cylinder of branch pipe pressure pipe cylinder is fixedly connected with pressing plate on the cylinder rod of branch pipe pressure pipe cylinder, and the joint is fixedly connected on pressing plate, multiple front-rear distribution workpiece seats are fixedly installed on workbench, the V-shaped clamping groove of opening upward is set in workpiece seat, two for compacting main pipe compacting cylinders are also installed on workbench, main pipe is horizontal pipe, branch pipe is vertical pipe, the diameter of branch pipe is less than the diameter of main pipe, positioning plate is placed on one workpiece seat, V-shaped groove and arc-shaped groove are respectively set in the front and rear two end faces of positioning plate, in the view of top view, the bottom of V-shaped clamping groove, V-shaped groove, arc-shaped groove is on a straight line.This equipment effectively reduces the cost of welder.

Description

Technical Field

[0001] This utility model relates to welding, and in particular to a welding device for the intersection of orthogonal circular pipes, belonging to the technical field of welding equipment. Background Technology

[0002] In the production of liquid pipelines, intersecting line welds formed by many orthogonal circular pipes are required. Welding these intersecting line welds has always been a challenging aspect of the manufacturing process, especially in the production of chemical and pressure-bearing pipelines. In such cases, TIG welding must be used to ensure weld quality. TIG welding demands higher skill levels from workers. Currently, most automated (TIG) welding equipment for intersecting lines requires manual spot welding before the pipes are clamped onto the automated welding equipment. The automated equipment then collects the coordinates of a point on the weld seam, calculates the weld trajectory based on the diameters of the two circular pipes and the collected coordinate data, and completes the welding. This method has several drawbacks: First, manual spot welding often involves supporting one pipe during the process, which may prevent the two pipes from achieving orthogonality, resulting in angular errors. When using automated welding equipment to weld according to the calculated trajectory, deviations may occur, leading to weld quality issues. Second, the need for spot welding before machine welding still requires at least one TIG welder, preventing a reduction in labor costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the current welding of orthogonal circular pipe intersection lines and to provide a welding device for orthogonal circular pipe intersection lines.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: an orthogonal circular pipe intersection welding device, including a worktable, on which a CNC three-axis system is installed. A rotary motor is installed at the end of the CNC three-axis system as a rotating axis. A welding torch is fixed on the output shaft of the rotary motor and connected to a welding machine. A horizontal B-axis in the front-back direction is also fixedly installed on the worktable. The B-axis is driven by a motor. A vertical branch pipe pressing cylinder is installed on the slider of the B-axis. A pressure plate is fixedly connected to the cylinder rod of the branch pipe pressing cylinder. The upper part is fixedly connected to a connector, and multiple workpiece seats distributed front and back are fixedly installed on the worktable. The workpiece seats are provided with V-shaped grooves with upward openings. Two clamping cylinders for clamping the main pipe are also installed on the worktable. The main pipe is a horizontal pipe, and the branch pipe is a vertical pipe. The diameter of the branch pipe is smaller than the diameter of the main pipe. A positioning plate is placed on one of the workpiece seats. The positioning plate has V-shaped grooves and arc grooves on its front and rear end faces, respectively. In the top view, the bottoms of the V-shaped grooves, V-shaped grooves, and arc grooves are on a straight line.

[0005] Furthermore, a V-shaped bracket is fixedly installed at the front of the workbench. Two support wheels are rotatably installed on the two V-shaped sides of the V-shaped bracket. The axis of the support wheels is parallel to the V-shaped side, and the V-shape formed by the two support wheels corresponds to the V-shaped groove.

[0006] The positive and beneficial technical effects of this utility model are as follows: the equipment only requires the operator to position and clamp the workpiece, and the welding can be carried out entirely by the equipment, which effectively reduces the welding cost and improves the welding quality. Attached Figure Description

[0007] Figure 1 This is an overall schematic diagram of the present invention.

[0008] Figure 2 This is a partial schematic diagram of the present invention (the pressure head pressing down on the straight pipe).

[0009] Figure 3 This is one of the partial schematic diagrams of this utility model.

[0010] Figure 4 This is a second partial schematic diagram of the present invention.

[0011] Figure 5 This is a schematic diagram of the support wheel. Detailed Implementation

[0012] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0013] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: worktable; 2: CNC three-axis system; 3: rotary axis; 4: welding torch; 5: B-axis; 6: branch pipe pressing cylinder; 7: pressure plate; 8: workpiece seat; 801: V-shaped groove; 9: V-shaped bracket; 10: main pipe; 11: positioning plate; 1101: V-shaped groove; 1102: arc groove; 12: pressing cylinder; 13: branch pipe; 14: pressing head; 15: support wheel.

[0014] The clamping cylinder 12 (with clamping components, which can be directly fixed to the workbench) in this application is an existing product and can be purchased online. For example, the Airtac SX-50-D can be used.

[0015] As shown in the attached figure, an orthogonal circular pipe intersection welding device includes a worktable 1, a CNC three-axis system 2 installed on the worktable, a rotary motor 3 installed at the end of the CNC three-axis system as a rotary axis, a welding torch 4 fixed on the output shaft of the rotary motor, and the welding torch connected to the welding machine. This is the existing configuration on the existing argon arc welding automatic welding machine.

[0016] A horizontal B-axis 5 is fixedly installed on the worktable 1. The B-axis is driven by a motor and can be a lead screw driven slider mechanism. A vertical branch pipe pressing cylinder 6 is installed on the B-axis slider. A pressure plate 7 is fixedly connected to the cylinder rod of the branch pipe pressing cylinder 6, and a connector 14 is fixedly connected to the pressure plate. The pressing head is used to press and position the top of the branch pipe 13 before welding. Multiple workpiece seats 8 are fixedly installed on the worktable, and each workpiece seat 8 has an upward-opening V-shaped groove 801. Two pressing cylinders 12 for pressing the main pipe are also installed on the worktable. One pressing cylinder can be set on the side of each workpiece seat to achieve pressing of the main pipe. Alternatively, a clamping cylinder can be installed on the side between the two workpiece seats to clamp the main pipe. When the main pipe is placed on the workpiece seat, the main pipe 10 is a horizontal pipe, and the branch pipe 13 is a vertical pipe with a diameter smaller than that of the main pipe. A positioning plate 11 is placed on one of the workpiece seats. The positioning plate has a V-shaped groove 1101 and an arc-shaped groove 1102 on its front and rear end faces, respectively. In a top view, the bottoms of the V-shaped groove, the arc-shaped groove, and the V-shaped groove are aligned. A movable positioning mechanism can be installed between the positioning plate and the workpiece seat. For example, a positioning pin can be installed on the workpiece seat, and a positioning hole can be installed on the positioning plate. The positioning plate is positioned by the engagement of the pin and the hole. When the diameter of the branch pipe is small, it can be positioned by the V-shaped groove; when the diameter of the branch pipe is large, it can be positioned by the arc-shaped groove.

[0017] A V-shaped bracket 9 is fixedly installed at the front of the workbench. Two support wheels 15 are rotatably installed on the two V-shaped sides of the V-shaped bracket. The axis of the support wheels 15 is parallel to the V-shaped side. The V-shape formed by the two support wheels corresponds to the V-shaped groove. The V-shaped bracket is used for support when welding long main pipes. After the main pipe is placed on the V-shaped bracket and the workpiece seat, it is in a horizontal state.

[0018] The workflow for using this equipment is as follows: The operator manually moves the welding torch to a safe position (generally the upper left corner of the machine). Figure 1 Place the main pipe on the workpiece seat and clamp it with the clamping cylinder. Manually place the positioning plate on the workpiece seat and position the branch pipe in the positioning device. Start the pipe clamping cylinder to rise, and start the B-axis to automatically move to the corresponding position. Then, the pipe clamping cylinder presses down to clamp the branch pipe. Manually remove the positioning plate and move the welding torch to the weld seam. First, perform spot welding using the equipment to fix the branch pipe. After spot welding, the pipe clamping cylinder automatically rises and moves to the far right. Figure 1 This will not affect the welding. After the B-axis is moved into position, the equipment automatically starts welding (automatic welding equipment can obtain the welding trajectory through the coordinates of a point on the weld and the diameters of the two round pipes; this is existing technology). After welding is completed, the welding torch is moved to the upper left corner of the machine. Figure 1The clamping cylinder is manually opened, and the workpiece is removed. Workers only need to load and unload the workpiece. This equipment eliminates the need for manual spot welding when welding intersecting lines and also eliminates the need for argon arc welders, requiring only one operator. Typically, the diameter of the branch pipe in the intersecting line welded by this equipment is less than or equal to half the diameter of the main pipe.

[0019] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. A welding device for intersecting orthogonal circular pipes, comprising a worktable, a CNC three-axis system mounted on the worktable, a rotary motor mounted at the end of the CNC three-axis system as a rotation axis, a welding torch fixed on the output shaft of the rotary motor, and the welding torch connected to a welding machine, characterized in that: A horizontal B-axis is fixedly installed on the worktable. The B-axis is driven by a motor. A vertical branch pipe pressing cylinder is installed on the slider of the B-axis. A pressure plate is fixedly connected to the cylinder rod of the branch pipe pressing cylinder. A pressure head is fixedly connected to the pressure plate. Multiple workpiece seats distributed front and back are fixedly installed on the worktable. The workpiece seats have V-shaped grooves with upward openings. Two pressing cylinders for pressing the main pipe are also installed on the worktable. The main pipe is a horizontal pipe and the branch pipe is a vertical pipe. The diameter of the branch pipe is smaller than the diameter of the main pipe. A positioning plate is placed on one of the workpiece seats. The positioning plate has V-shaped grooves and arc-shaped grooves on its front and rear end faces, respectively. In the top view, the bottoms of the V-shaped groove, the V-shaped groove, and the arc-shaped groove are on a straight line.

2. The orthogonal circular tube intersection welding equipment according to claim 1, characterized in that: A V-shaped bracket is fixedly installed at the front of the workbench. Two support wheels are rotatably installed on the two V-shaped sides of the V-shaped bracket. The axis of the support wheels is parallel to the V-shaped side, and the V-shape formed by the two support wheels corresponds to the V-shaped groove.

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