Window frame spot welding copper electrode mechanism

Abstract

The utility model belongs to the technical field of spot welding, particularly relates to a window frame spot welding copper electrode mechanism, and aims to solve the problems that the conventional spot welding has obvious quality defects such as burrs, too deep indentations and bulges due to the fact that an anti-collision steel pipe is arc-shaped, and does not meet the welding spot quality requirement of a window frame plate. Comprising a fixing tool used for fixing a window frame and an anti-collision steel pipe, a connecting block is placed at the resistance spot welding position of the anti-collision steel pipe, the connecting block is pressed on the anti-collision steel pipe through a pressing mechanism, and a copper electrode capable of moving up and down is installed on the connecting block. And through the arrangement of the heat dissipation holes, the heat dissipation effect is improved, the material cost is reduced, and the welding quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding, in particular to a window frame spot welding copper electrode mechanism. Background Art

[0002] Resistance welding is generally a welding method that makes the workpieces under a certain electrode pressure and uses the resistance heat generated when the current passes through the workpieces to melt the contact surface between the two workpieces to achieve connection. Usually a larger current is used. In order to prevent bad welds such as weld penetration and burrs on the contact surface, pressure must be applied during the welding process. When performing this type of resistance welding, the surface quality of the welded workpiece is of paramount importance to obtain stable welding quality. Therefore, the contact surface between the electrode and the workpiece and between the workpieces must be cleaned before welding. Among them, spot welding of steel pipes and iron sheets is to assemble the welded parts into lap joints and press them between two columnar electrodes, using resistance heat to melt the parent metal to form welds. With the continuous development of the automotive industry, some special parts are slowly increasing, so the requirements for electrode heads are getting higher and higher.

[0003] In this application, the anti-collision steel pipe is arc-shaped, and conventional spot welding will produce obvious quality defects such as burrs, excessively deep indentations, and protrusions, which do not meet the quality requirements of the window frame panel welds. Utility Model Content

[0004] The utility model provides a window frame spot welding copper electrode mechanism, which solves the shortcomings in the prior art that the anti-collision steel pipe is arc-shaped, conventional spot welding will produce obvious burrs, too deep indentations, bulges and other quality defects, and does not meet the quality requirements of the window frame plate welding points.

[0005] The utility model provides the following technical solutions:

[0006] The window frame spot welding copper electrode mechanism includes a fixing tool for fixing the window frame and the anti-collision steel pipe. A connecting block is placed at the resistance spot welding position of the anti-collision steel pipe. The connecting block is pressed on the anti-collision steel pipe by a pressing mechanism. A copper electrode that can move up and down is installed on the connecting block.

[0007] As a further improvement of the above scheme.

[0008] Preferably, the pressing mechanism is installed on a fixing fixture, and a plurality of clamping mechanisms for positioning the window frame and the anti-collision steel pipe are installed on the fixing fixture.

[0009] Preferably, the copper electrode and the pressing mechanism are arranged to avoid each other.

[0010] Preferably, a cylindrical through hole is provided on the connection block, and the size and shape of the copper electrode are adapted to the cylindrical through hole.

[0011] Preferably, a plurality of non-through heat dissipation holes are symmetrically provided on both sides of the copper electrode.

[0012] Preferably, the number of the heat dissipation holes is 8 and they are symmetrically distributed on both sides of the copper electrode, and 1 / 2 of the thickness in the middle of the copper electrode is left unpenetrated by the heat dissipation holes.

[0013] Preferably, the heat dissipation hole has a diameter of 5.5 mm.

[0014] Preferably, the copper electrode has a diameter of 29.5 mm.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0016] The copper electrode is installed in the connection block and can float up and down. The floating design allows the copper electrode to better match the welding surface of the anti-collision steel pipe during resistance spot welding to ensure welding quality. At the same time, after the copper electrode is repaired in each production shift, as the length of the copper electrode becomes shorter, the copper electrode can still match the welding surface of the anti-collision steel pipe, thereby increasing the frequency of use of the copper electrode and reducing the consumption of the copper electrode.

[0017] The design of the heat dissipation holes can reduce the heat generated by the copper electrode structure, and at the same time increase the fluidity of the wind to dissipate heat faster, and secondly reduce the mass of the copper electrode, which can maximize the cost and benefit;

[0018] As an intermediate medium, the contact area is increased. The electrode at one end of the welding gun is pressed on the copper electrode mechanism for welding. No weld spot shape will be formed on the surface of the steel pipe, which reduces the situation of poor welding and increases the aesthetics. The conductivity of copper is more conducive to improving the welding quality. In terms of efficiency, it eliminates the time waste of rework and the material waste of grinding auxiliary materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a window frame and an anti-collision steel pipe provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of the window frame, anti-collision steel pipe and fixing tooling provided in an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of the connecting block and the copper electrode provided in the embodiment of the utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of a copper electrode provided in an embodiment of the utility model.

[0023] Reference numerals:

[0024] 1. Window frame; 2. Anti-collision steel pipe; 3. Resistance spot welding position; 4. Connecting block; 5. Copper electrode; 6. Fixing tooling. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0027] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0028] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0030] Example

[0031] Reference Figure 1-Figure 4, a window frame spot welding copper electrode mechanism includes a fixing tool 6 for fixing the window frame 1 and the anti-collision steel pipe 2, a connecting block 4 is placed at the resistance spot welding position 3 of the anti-collision steel pipe 2, the connecting block 4 is pressed on the anti-collision steel pipe 2 by a pressing mechanism, a copper electrode 5 that can move up and down is installed on the connecting block 4, a cylindrical through hole is opened on the connecting block 4, the size and shape of the copper electrode 5 are adapted to the cylindrical through hole, the diameter of the copper electrode 5 is 29.5mm, and a plurality of non-penetrating heat dissipation holes are symmetrically opened on both sides of the copper electrode 5. The number of heat dissipation holes is 8 and symmetrically distributed on both sides of the copper electrode 5. 1 / 2 of the thickness is left in the middle of the copper electrode 5 and is not penetrated by the heat dissipation holes. The diameter of the heat dissipation hole is 5.5mm, and the pressing mechanism is installed on the fixing tool 6. A plurality of clamping mechanisms for positioning the window frame 1 and the anti-collision steel pipe 2 are installed on the fixing tool 6, and the copper electrode 5 and the pressing mechanism are arranged to avoid each other.

[0032] The working principle of this application is:

[0033] The copper electrode 5 is connected to the resistance spot welding fixture through the connecting block 4. The copper electrode 5 is installed in the connecting block 4 and can float up and down. The floating design can better match the copper electrode 5 with the welding surface of the anti-collision steel pipe 2 during resistance spot welding to ensure the welding quality. At the same time, after the copper electrode 5 is repaired in each production shift, as the length of the copper electrode 5 becomes shorter, the copper electrode 5 can still match the welding surface of the anti-collision steel pipe 2, thereby increasing the use frequency of the copper electrode 5 and reducing the consumption of the copper electrode 5.

[0034] The copper electrode 5 is cylindrical in shape, with four 5.5mm heat dissipation holes designed on both sides, and the middle is designed so that the 1 / 2 position of the copper block is not penetrated. The main purpose of the heat dissipation holes is to dissipate heat. Since a large amount of heat is generated during resistance welding, the design of the heat dissipation holes can reduce the heat generated by the copper electrode 5 structure, and at the same time increase the fluidity of the wind for faster heat dissipation, and secondly, reduce the mass of the copper electrode 5, which can maximize the cost and benefit.

[0035] Generally, the end diameter of the spot welding electrode cap is 6-8mm, while the diameter of the copper electrode 5 is 29.5mm. As an intermediate medium, the contact area is increased. The electrode at one end of the welding gun is pressed on the copper electrode 5 mechanism for welding. The shape of the weld spot will not be formed on the surface of the steel pipe, which reduces the situation of poor welding and increases the aesthetics. The conductivity of copper is more conducive to improving the welding quality. In terms of efficiency, it eliminates the time waste of rework and the material waste of grinding auxiliary materials.

[0036] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. Window frame spot welding copper electrode mechanism, characterized in that: It comprises a fixing tool (6) for fixing a window frame (1) and an anti-collision steel pipe (2); a connection block (4) is placed at a resistance spot welding position (3) of the anti-collision steel pipe (2); the connection block (4) is pressed on the anti-collision steel pipe (2) by a pressing mechanism; and a copper electrode (5) that can move up and down is installed on the connection block (4).

2. The window frame spot welding copper electrode mechanism according to claim 1, characterized in that: The pressing mechanism is installed on a fixing tool (6), and a plurality of clamping mechanisms for positioning the window frame (1) and the anti-collision steel pipe (2) are installed on the fixing tool (6).

3. The window frame spot welding copper electrode mechanism according to claim 1, characterized in that: The copper electrode (5) and the pressing mechanism are arranged to avoid each other.

4. The window frame spot welding copper electrode mechanism according to claim 1, characterized in that: The connection block (4) is provided with a cylindrical through hole, and the size and shape of the copper electrode (5) are adapted to the cylindrical through hole.

5. The window frame spot welding copper electrode mechanism according to claim 3, characterized in that: A plurality of non-through heat dissipation holes are symmetrically provided on both sides of the copper electrode (5).

6. The window frame spot welding copper electrode mechanism according to claim 5, characterized in that: The number of the heat dissipation holes is 8 and they are symmetrically distributed on both sides of the copper electrode (5), and 1 / 2 of the thickness of the middle of the copper electrode (5) is not penetrated by the heat dissipation holes.

7. The window frame spot welding copper electrode mechanism according to claim 6, characterized in that: The diameter of the heat dissipation hole is 5.5 mm.

8. The window frame spot welding copper electrode mechanism according to claim 3, characterized in that: The copper electrode (5) has a diameter of 29.5 mm.

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