Positioning tool for welding small L-shaped bracket of electric instrument

Abstract

The utility model discloses a positioning tool for welding a small L-shaped support of an electric instrument, the small L-shaped support is provided with a component I and a component II which are perpendicular to each other, the cross section of the component I and the cross section of the component II are groove-shaped, the bottoms of the component I and the component II are vertically welded, and the positioning tool comprises a bottom plate. Two U-shaped positioning frames I matched with the component I, two groups of end positioning pins and two U-shaped positioning frames II matched with the component II are arranged on the bottom plate, the component I is pressed by a quick clamp I, the quick clamp I is mounted on a bottom support I, the component II is pressed by a quick clamp II, and the quick clamp II is mounted on a bottom support II. The quick clamp II is installed on the bottom support II, and the bottom support I and the bottom support II are fixed to the bottom plate. According to the automatic welding device, the component can be simply and accurately positioned, automatic welding can be carried out by utilizing a robot welding machine according to a set program, spot welding is not needed before welding, and the welding seam butt joint precision, the welding quality and the welding efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to a welding tool, in particular to a positioning tool used for welding a small L-shaped bracket of an electrical instrument. Background Art

[0002] At present, the construction scale of oil refining and chemical plants is expanding day by day. The welding of small steel components in the electrical and instrumentation field, that is, the welding of brackets for electrical and instrumentation equipment, cable trays, etc., has increased significantly. The large number of large-scale and repetitive welding of small steel components has a large demand for welder resources. In addition, the number of welders and technical level cannot meet the requirements when using traditional manual welding, the construction period is not easy to guarantee, and the construction quality and cost control are difficult. Robot welding has significant advantages in large-scale and repetitive welding, but it needs to be assisted by appropriate positioning tooling. Utility Model Content

[0003] The utility model provides a positioning tool for welding a small L-shaped bracket of an electrical instrument to solve the technical problems existing in the known technology. The positioning tool can assist robot welding, make the positioning of the weldment simple and accurate, and eliminate the need for spot welding before welding, thereby improving the weld joint accuracy, welding quality and welding efficiency.

[0004] The utility model adopts a technical solution to solve the technical problems existing in the known technology: a positioning tool for welding a small L-shaped bracket of an electrical instrument, wherein the small L-shaped bracket is provided with a component I and a component II which are perpendicular to each other, the cross sections of the component I and the component II are groove-shaped, and the bottoms are vertically welded, and the positioning tool comprises a bottom plate, on which two U-shaped positioning frames I and two groups of end positioning pins adapted to the component I and two U-shaped positioning frames II adapted to the component II are provided, the component I is pressed by a quick clamp I, the quick clamp I is installed on a bottom bracket I, the component II is pressed by a quick clamp II, the quick clamp II is installed on a bottom bracket II, and the bottom bracket I and the bottom bracket II are fixed on the bottom plate.

[0005] The bottom plate is rectangular, the two U-shaped positioning frames I and the end positioning pins are arranged on one side of the rectangular bottom plate, and the two U-shaped positioning frames II are arranged on the other side of the rectangular bottom plate.

[0006] Each set of end locating pins contains 2.

[0007] The advantages and positive effects of the utility model are as follows: by arranging a positioning structure on the bottom plate for the two components of the L-shaped bracket, the component positioning can be simple and accurate, and a robot welding machine can be used to perform automatic welding according to a set program, without the need for spot welding before welding, which can greatly improve the weld joint accuracy, welding quality and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] In the figure: 1-1, base plate; 1-2, U-shaped positioning frame Ⅰ; 1-3, end positioning pin; 1-4, U-shaped positioning frame Ⅱ; 1-5, quick clamp Ⅰ; 1-6, bottom support Ⅰ; 1-7, quick clamp Ⅱ; 1-8, bottom support Ⅱ; 2-1, component Ⅰ; 2-2, component Ⅱ. DETAILED DESCRIPTION

[0010] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0011] See also Figure 1 , a positioning fixture for welding a small L-shaped bracket for electrical instruments, the small L-shaped bracket is provided with a member Ⅰ2-1 and a member Ⅱ2-2 which are perpendicular to each other, the cross-sections of the members Ⅰ2-1 and Ⅱ2-2 are groove-shaped, and the bottoms are vertically welded, the positioning fixture comprises a base plate 1-1, two U-shaped positioning frames Ⅰ1-2 adapted to the member Ⅰ2-1 and two groups of end positioning pins 1-3 and two U-shaped positioning frames Ⅱ1-4 adapted to the member Ⅱ2-2 are provided on the base plate 1-1, the member Ⅰ2-1 is clamped by a quick clamp Ⅰ1-5, and the quick clamp Ⅰ1-5 is installed on a base Ⅰ1-6, the member Ⅱ2-2 is clamped by a quick clamp Ⅱ1-7, and the quick clamp Ⅱ1-7 is installed on a base Ⅱ1-8, and the base Ⅰ1-6 and the base Ⅱ1-8 are fixed on the base plate 1-1.

[0012] In this embodiment, the bottom plate 1-1 is rectangular, the two U-shaped positioning frames I1-2 and the end positioning pins 1-3 are arranged on one side of the rectangular bottom plate, and the two U-shaped positioning frames II1-4 are arranged on the other side of the rectangular bottom plate. The structure is compact and the size of the tooling can be reduced. Each set of end positioning pins 1-3 includes 2.

[0013] Application of the above tooling:

[0014] Place mutually perpendicular components Ⅰ2-1 and Ⅱ2-2 on U-shaped positioning frame Ⅰ1-2 and U-shaped positioning frame Ⅱ1-4 respectively, and make the bottoms of components Ⅰ2-1 and Ⅱ2-2 vertically contact. The two ends of component Ⅰ2-1 are fixed by end positioning pins, and the upper part is clamped by quick clamp Ⅰ1-5 to achieve fixation. Component Ⅱ2-2 is clamped by quick clamp Ⅱ1-7.

[0015] Automatic welding: First, set the welding voltage, current, speed and other parameters as well as the running trajectory of the welding gun through the teaching pendant and test them. Then, start the work button and the robot welding machine will automatically weld according to the set program.

[0016] The robot welder can automatically store welding programs and welding process parameters, which can be directly called up under the same working conditions. Therefore, welding can be repeated for a long time with stable welding quality and simple and efficient operation.

[0017] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the scope of protection of the present invention.

Claims

1. A positioning tool for welding a small L-shaped bracket for electrical instruments, wherein the small L-shaped bracket is provided with a component I and a component II which are perpendicular to each other, wherein the cross sections of the components I and II are groove-shaped and the bottoms are vertically welded, and the characteristics are as follows: The positioning tool includes a base plate, on which are arranged two U-shaped positioning frames I and two groups of end positioning pins adapted to the component I and two U-shaped positioning frames II adapted to the component II. The component I is clamped by a quick clamp I, and the quick clamp I is installed on the base support I. The component II is clamped by a quick clamp II, and the quick clamp II is installed on the base support II. The base support I and the base support II are fixed to the base plate.

2. The positioning tool for welding a small L-shaped bracket of an electrical instrument according to claim 1, characterized in that: The bottom plate is rectangular, the two U-shaped positioning frames I and the end positioning pins are arranged on one side of the rectangular bottom plate, and the two U-shaped positioning frames II are arranged on the other side of the rectangular bottom plate.

3. The positioning tool for welding a small L-shaped bracket of an electrical instrument according to claim 1, characterized in that: Each set of end locating pins contains 2.

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