Transformer oil tank pipe joint welding device

Abstract

The utility model relates to the technical field of transformer part manufacturing equipment, in particular to a transformer oil tank pipe joint welding device which comprises a welding robot. The clamping assembly is used for clamping a pipe joint, and the clamping assembly is located on the side wall of the welding robot; and the overturning assembly is installed on the rack, and the output end of the overturning assembly is connected with the clamping assembly. According to the utility model, the production efficiency and the product quality of the pipe joint are improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer component manufacturing equipment, in particular to a transformer oil tank pipe joint welding device. Background Art

[0002] The transformer oil tank is an important component of the transformer. It is mainly used to store transformer oil and adjust the oil volume, ensure that the transformer is full of oil, reduce the contact between oil and air, delay the aging of transformer oil, adapt to the volume change of oil due to temperature change, and prevent transformer oil overflow or insufficient oil in the tank.

[0003] With the transformation of the global energy structure and the continuous growth of electricity demand, the core position of special transformers in the power system has become increasingly prominent. These transformers need to withstand extremely high voltages and currents, so the manufacturing quality and process requirements of their internal components are extremely strict. Among them, the laminated pipe joint is an important connection part between the transformer and the external laminated cooling system. Its welds must not be leaking. At the same time, the flange of the laminated pipe joint needs to be connected to the butterfly valve. The appearance quality of the pipe joint weld is related to whether the butterfly valve can be opened and closed smoothly. The appearance quality of manual welding welds is difficult to guarantee. It takes a lot of manpower to polish the pipe mouth smoothly. If the iron filings after polishing are not carefully cleaned, it is easy to cause metal foreign matter problems in the oil tank. After the transformer is in operation, it will cause the transformer oil to be broken down and burn the internal coil, etc., which will directly affect the overall performance and life of the transformer. However, traditional transformer oil tank pipe joint welding is mostly completed by manual welding, which has the following problems:

[0004] Unstable welding quality: Manual welding depends on the operator's skill level and is prone to welding defects.

[0005] Low production efficiency: Manual welding is slow and requires frequent breaks, making continuous production impossible.

[0006] High labor intensity: Prolonged manual welding can cause operator fatigue and increase the risk of work-related injuries.

[0007] Safety hazards: During manual welding, the operator needs to be in close contact with the welding area, which increases safety risks such as burns.

[0008] Therefore, those skilled in the art are committed to developing a transformer tank pipe joint welding device, which is beneficial to improving the production efficiency and product quality of the pipe joint and reducing the labor intensity of operators. Utility Model Content

[0009] The technical problem to be solved by the utility model is to provide a transformer oil tank pipe joint welding device, which is beneficial to improving the production efficiency and product quality of the pipe joint and reducing the labor intensity of the operator.

[0010] The technical solution of the utility model to solve the above technical problems is as follows:

[0011] A transformer oil tank pipe joint welding device, comprising

[0012] welding robots;

[0013] A clamping assembly, the clamping assembly is used to clamp a pipe joint and the clamping assembly is located on a side wall of the welding robot;

[0014] A flip assembly, the flip assembly is mounted on the frame, and the output end of the flip assembly is connected to the clamping assembly

[0015] The beneficial effect of adopting the above scheme is: after the clamping assembly clamps the pipe joint, the flipping assembly drives the clamping assembly and the pipe joint to flip. During the flipping process, the welding robot is equipped with an arc contact sensor. All welding programs are preset in advance according to different pipe diameters and different welding positions. The weld position is determined by arc sensing. The operator only needs to load and unload, rivet in groups, and select the welding program. During welding, the operator can make full use of time to perform riveting and loading and unloading of another positioner, which improves the overall production efficiency and product quality of the pipe joint, and greatly reduces the work intensity and physical harm to the operator.

[0016] On the basis of the above technical solution, the present invention can also be improved as follows.

[0017] Furthermore, the clamping assembly includes a clamping disk, which is provided with a plurality of evenly distributed clamping grooves, and clamping members are installed in the clamping grooves, and each clamping member is connected to a clamping drive assembly.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that the driving component can adopt a servo motor, which drives each clamping part to move closer or farther away from each other along the clamping groove, thereby clamping or releasing the pipe joint. The rotation of the servo motor is automatically controlled by the control device, which is conducive to clamping pipe joints of different sizes and diameters with a constant clamping force, which is conducive to subsequent welding by the welding robot.

[0019] Furthermore, the clamping member includes a clamping boss and a clamping column, the clamping boss is connected to the clamping column, and a limiting groove is provided on the clamping column near the center of the clamping disk.

[0020] The beneficial effect of adopting the above further solution is that the limiting groove is conducive to limiting the outer wall of the flange or the pipe joint and clamping it firmly.

[0021] Furthermore, the frame includes a first support frame and a second support frame, the first support frame and the second support frame are arranged opposite to each other, and the flip assembly is installed between the first support frame and the second support frame.

[0022] The beneficial effect of adopting the above further solution is that the flip assembly is installed between the first support frame and the second support frame, which is convenient for installing the clamping assembly and the flip assembly.

[0023] Furthermore, the flipping assembly includes a first flipping column and a second flipping column, the two ends of the first flipping column are respectively connected to the clamping disk and the first support frame, the two ends of the second flipping column are respectively connected to the clamping disk and the second support frame, and the end of the first flipping column is also connected to the flipping drive assembly.

[0024] The beneficial effect of adopting the above further solution is that the flip drive component can use a servo motor, and the flip drive servo motor rotates to drive the clamping component to flip and the pipe joint to flip, which is beneficial for the welding robot to weld at multiple angles and in multiple directions.

[0025] Furthermore, it also includes an assembly table, on which an assembly limiting fixture is installed.

[0026] The beneficial effect of adopting the above further solution is that the assembly and assembly limiting fixture are conducive to the initial limiting and fixing of the pipe joint, which is conducive to the subsequent placement on the clamping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram of a welding device for a transformer oil tank pipe joint according to a specific embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a clamping assembly according to a specific embodiment of the present utility model;

[0029] Figure 3 This is a structural diagram of a welding workstation according to a specific embodiment of the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 1. Welding robot; 2. Clamping assembly; 3. Flipping assembly; 4. Frame; 5. Clamping plate; 6. Clamping groove; 7. Clamping member; 8. Clamping drive assembly; 9. Clamping boss; 10. Clamping column; 11. Limiting groove; 12. First support frame; 13. Second support frame; 14. First flipping column; 15. Second flipping column; 16. Flipping drive assembly; 17. Assembly table; 18. Assembly limiting fixture. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] like Figure 1 、 Figure 2 and Figure 3 As shown, a transformer tank pipe joint welding device includes

[0037] Welding robot 1;

[0038] The clamping assembly 2 is used to clamp the pipe joint and is located on the side wall of the welding robot 1;

[0039] The flip assembly 3 is installed on the frame 4, and the output end of the flip assembly 3 is connected to the clamping assembly 2.

[0040] In the present invention, after the clamping component 2 clamps the pipe joint, the flipping component 3 drives the clamping component 2 and the pipe joint to flip. During the flipping process, the welding robot 1 is equipped with an arc contact sensor. All welding programs are preset in advance according to different pipe diameters and different welding positions. The weld position is determined by arc sensing. The operator only needs to load and unload materials, rivet in groups, and select welding programs. During welding, the operator can make full use of time to perform riveting and loading and unloading of another group of clamping components 2 and flipping components 3, which improves the overall production efficiency and product quality of the pipe joint, and greatly reduces the work intensity and physical hazards of the operator.

[0041] like Figure 1 、 Figure 2 As shown, the clamping assembly 2 includes a clamping disk 5, which is provided with a plurality of evenly distributed clamping grooves 6. In this embodiment, three evenly distributed clamping grooves 6 are provided, and clamping members 7 are installed in the clamping grooves 6. Each clamping member 7 is connected to a clamping drive assembly 8. The clamping drive assembly 8 adopts components such as a servo motor and a reduction gear pair. The clamping drive assembly 8 drives each clamping member 7 to move closer to or away from each other to clamp the pipe joint or release the pipe joint. The clamping drive assembly 8 is electrically connected to a control device (not shown in the figure). The control device controls the rotation of the clamping drive assembly 8 so that each clamping member 7 can slide evenly along the clamping groove 6, and at the same time makes the force exerted by each clamping member 7 on the pipe joint constant.

[0042] like Figure 1 、 Figure 2 As shown, in another embodiment, the clamping member 7 includes a clamping boss 9 and a clamping column 10. The clamping boss 9 is installed in the clamping groove 6. The clamping boss 9 is connected to the clamping column 10 and the clamping column 10 is perpendicular to the plane of the clamping disk 5. A limiting groove 11 is provided on the clamping column 10 and close to the center of the clamping disk 5. The limiting groove 11 is used to limit, fix and clamp the pipe joint or flange.

[0043] In one embodiment, the frame 4 includes a first support frame 12 and a second support frame 13, which are arranged opposite each other. The flip assembly 3 is installed between the first support frame 12 and the second support frame 13. Specifically, the flip assembly 3 includes a first flip column 14 and a second flip column 15. The first flip column 14 is connected to the clamping plate 5 and the first support frame 12 at both ends, respectively. One end of the first flip column 14 is fixedly connected to the clamping plate 5, and the other end of the first flip column 14 is mounted on the first support frame 12 via a rotating bearing. The second flip column 15 is connected to the clamping plate 5 and the second support frame 13 at both ends, respectively. One end of the second flip column 15 is fixedly connected to the clamping plate 5, and the other end of the second flip column 15 is connected to the second support frame 13 via a rotating bearing. The end of the first flip column 14 is also connected to a flip drive assembly 16, which is installed on the first support frame 12. The flip drive assembly 16 can use a servo motor and a gear pair, and the flip drive assembly 16 is electrically connected to a control device.

[0044] like Figure 3 As shown in the specific embodiment, the welding robot 1 is provided with the same two-axis positioner on both sides. The two-axis positioner is composed of a first support frame 12, a second support frame 13, a flip assembly 3 and a clamping assembly 2. The side wall of the welding robot 1 also has a pre-selection table, control buttons, etc. It also includes an assembly table 17, on which an assembly limit fixture 18 is installed.

[0045] During the specific welding process, it is only necessary to complete the editing of the welding program text in advance, and define various points in this embodiment (arc starting point, arc extinction point, space point, welding point, sensor point, etc.) through the teaching process. The arc sensor is connected to the nozzle of the welding gun of the pipe joint welding station, and the space point is determined by contact sensing. The preset welding program point is offset, and the offset is automatically cleared after the welding is completed, thereby realizing teaching-free welding.

[0046] The pipe joint welding station is equipped with a pre-selection table with a total of three buttons, one for each of the two positioners and an emergency stop button. When the workstation is in automatic mode, pressing the corresponding button will cause the robot to start running the positioner program. At this time, the operator can load and unload the workpiece on the other positioner and assemble the pipe joints. This repeated operation can greatly improve welding efficiency.

[0047] The manual mode of the pipe joint welding station is mainly used for testing. In manual mode, the operator needs to gently press the release button on the rear of the teach pendant. At the same time, the welding current, welding voltage, welding speed, swing frequency, swing width, and the left and right, up and down offset of the welding gun can be adjusted on the teach pendant at any time. In the face of an emergency, the operator can immediately release the release button of the teach pendant or quickly tap the emergency stop button on the teach pendant to stop welding. In order to prevent the operator from forgetting to perform the emergency stop operation due to an emergency, pressing the release button of the teach pendant hard can also make the robot stop immediately.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transformer tank pipe joint welding device, characterized by: include Welding robots (1); A clamping assembly (2), the clamping assembly (2) being used for clamping a pipe joint and the clamping assembly (2) being located on a side wall of the welding robot (1); A turning assembly (3), wherein the turning assembly (3) is mounted on a frame (4), and an output end of the turning assembly (3) is connected to the clamping assembly (2); The clamping assembly (2) comprises a clamping disc (5), a plurality of evenly distributed clamping grooves (6) are provided on the clamping disc (5), clamping members (7) are installed in the clamping grooves (6), and each clamping member (7) is connected to a clamping drive assembly (8), and the clamping drive assembly (8) drives each clamping member (7) to move closer to or farther from each other to clamp or release the pipe joint.

2. The transformer oil tank pipe joint welding device according to claim 1, characterized in that: The clamping member (7) comprises a clamping boss (9) and a clamping column (10), wherein the clamping boss (9) is connected to the clamping column (10), and a limiting groove (11) is provided on the clamping column (10) and close to the center of the clamping disk (5).

3. The transformer oil tank pipe joint welding device according to claim 2, characterized in that: The frame (4) comprises a first support frame (12) and a second support frame (13); the first support frame (12) and the second support frame (13) are arranged relative to each other; and the flip assembly (3) is installed between the first support frame (12) and the second support frame (13).

4. The transformer oil tank pipe joint welding device according to claim 3, characterized in that: The flip assembly (3) comprises a first flip column (14) and a second flip column (15), wherein the two ends of the first flip column (14) are respectively connected to the clamping disk (5) and the first support frame (12), and the two ends of the second flip column (15) are respectively connected to the clamping disk (5) and the second support frame (13), and the end of the first flip column (14) is also connected to a flip driving assembly (16).

5. The transformer oil tank pipe joint welding device according to claim 1, characterized in that: It also includes an assembly platform (17), on which an assembly limiting fixture (18) is installed.

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