Electrode structure and welding device

Abstract

The utility model provides an electrode structure and a welding device. The electrode structure comprises an electrode cap and an electrode rod, the electrode cap comprises a cap body, a positioning part and a connecting part which are sequentially arranged in the first direction, and the cap body is used for clamping a workpiece to be welded; a positioning groove and a connecting groove are sequentially formed in the electrode rod in the first direction. The connecting part is assembled in the connecting groove, and the positioning part is assembled in the positioning groove. According to the utility model, the connecting part is assembled in the connecting groove, so that the electrode cap and the electrode rod can be firmly fixed together; the positioning part is assembled in the positioning groove, so that the concentricity of the electrode cap and the electrode rod is ensured, and the electrode cap is convenient to position; therefore, the electrode cap is convenient to mount and dismount, the phenomenon that the electrode cap is eccentric or not vertical to affect welding work is avoided, and the assembly efficiency of the electrode structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode structures, in particular to an electrode structure and a welding device. Background Art

[0002] Electrode structures used in welding devices, such as welding guns, typically consist of an electrode cap and an electrode rod. However, existing electrode structures have low assembly efficiency and low positioning accuracy between the electrode cap and the electrode rod. This can cause the electrode cap to be eccentric or non-perpendicular, impacting welding performance. Utility Model Content

[0003] The utility model provides an electrode structure and a welding device to solve the problem of low assembly efficiency of the existing electrode structure.

[0004] An electrode structure comprises an electrode cap and an electrode rod;

[0005] The electrode cap comprises a cap body, a positioning portion and a connecting portion sequentially arranged along a first direction, wherein the cap body is used to clamp a workpiece to be welded;

[0006] The electrode rod is provided with a positioning groove and a connecting groove in sequence along a first direction;

[0007] The connecting portion is assembled in the connecting groove, and the positioning portion is assembled in the positioning groove.

[0008] Preferably, the connecting portion is provided with an external thread, and the connecting groove is provided with an internal thread matching the external thread.

[0009] Preferably, an end surface of the cap body away from the positioning portion is a welding end surface, and an edge of the welding end surface is provided with a rounded corner.

[0010] Preferably, the welding end surface is a plane.

[0011] Preferably, a first planar slot is provided on the side of the cap body;

[0012] And / or, a second planar slot is provided on the side surface of the electrode rod.

[0013] Preferably, an end surface of the cap body close to the positioning portion is a force-bearing surface, and the force-bearing surface is in contact with the end surface of the electrode rod.

[0014] Preferably, the portion of the electrode rod away from the electrode cap is configured as a trapezoidal structure, and the outer diameter of the trapezoidal structure in a region close to the electrode cap is larger than the outer diameter in a region away from the electrode cap.

[0015] Preferably, the electrode structure further includes a gasket, and the gasket is arranged between the electrode cap and the electrode rod.

[0016] A welding device comprising a welding gun body, a welding gun static arm, a welding gun movable arm and two electrode structures;

[0017] The welding gun static arm is installed on the welding gun body;

[0018] The welding gun movable arm is rotatably mounted on the welding gun body, forming a working space between the movable arm and the welding gun static arm;

[0019] One electrode structure is installed on the static arm of the welding gun, and the other electrode structure is installed on the movable arm of the welding gun. A welding space for clamping a workpiece to be welded is formed between the two electrode structures.

[0020] Preferably, the welding end face of the electrode cap installed in the electrode structure of the static arm of the welding gun is a small end face;

[0021] The welding end face of the electrode cap in the electrode structure of the welding gun movable arm is a large end face.

[0022] The electrode structure provided by the embodiment of the present invention is applied in a welding device and is used for welding a workpiece to be welded. The electrode structure includes an electrode cap and an electrode rod. During installation, the electrode rod is used to be installed on the welding gun arm of the welding device, and the electrode cap is installed on the electrode rod. Then, the workpiece to be welded is placed between the electrode caps of the two electrode structures, so as to realize welding of the workpiece to be welded. The specific electrode cap includes a cap body, a positioning portion and a connecting portion arranged in sequence along a first direction, and a positioning groove and a connecting groove are provided in the electrode rod along the first direction; during installation, the cap body is used to clamp the workpiece to be welded, and the connecting portion is assembled in the connecting groove to ensure that the electrode cap and the electrode rod can be stably fixed together; the positioning portion is assembled in the positioning groove to ensure the concentricity of the electrode cap and the electrode rod, which is convenient for positioning the electrode cap; such an arrangement facilitates the installation and disassembly of the electrode cap, avoids the eccentricity or non-verticality of the electrode cap affecting the welding work, and improves the assembly efficiency of the electrode structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a front view of an electrode cap in one embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of an electrode cap in one embodiment of the present invention;

[0026] Figure 3This is a front view of an electrode rod in one embodiment of the present utility model;

[0027] Figure 4 is a cross-sectional view of an electrode rod in one embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the docking of the moving electrode cap and the static electrode cap in one embodiment of the present utility model;

[0029] Figure 6 This is an isometric view of a welding device in one embodiment of the present invention;

[0030] Figure 7 It is an exploded view of a welding device in one embodiment of the present invention.

[0031] Among them, 1. Electrode cap; 11. Cap body; 12. Positioning part; 13. Connecting part; 14. Welding end face; 15. First plane slot; 16. Force-bearing surface; 2. Electrode rod; 21. Positioning slot; 22. Connecting slot; 23. Second plane slot; 24. Trapezoidal structure; 3. Workpiece to be welded; 4. Washer; 5. Welding gun body; 6. Welding gun static arm; 7. Welding gun movable arm. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] The present invention provides an electrode structure. Figure 1-5 The electrode structure includes an electrode cap 1 and an electrode rod 2; the electrode cap 1 includes a cap body 11, a positioning portion 12 and a connecting portion 13 arranged in sequence along a first direction, and the cap body 11 is used to clamp a workpiece 3 to be welded; a positioning groove 21 and a connecting groove 22 are provided in sequence in the electrode rod 2 along the first direction; the connecting portion 13 is assembled in the connecting groove 22, and the positioning portion 12 is assembled in the positioning groove 21.

[0036] The first direction is the axial direction of the electrode cap 1 .

[0037] As an example, the electrode structure is used in a welding device for welding a workpiece 3 to be welded. The electrode structure includes an electrode cap 1 and an electrode rod 2. During installation, the electrode rod 2 is installed on the welding gun arm of the welding device, and the electrode cap 1 is installed on the electrode rod 2. Then, the workpiece 3 to be welded is placed between the electrode caps 1 of the two electrode structures, so as to realize welding of the workpiece 3 to be welded. Specifically, the electrode cap 1 includes a cap body 11, a positioning portion 12 and a connecting portion 13 arranged in sequence along a first direction. A positioning groove 21 and a connecting groove 22 are provided in the electrode rod 2 along the first direction. During installation, the cap body 11 is used to clamp the workpiece 3 to be welded, and the connecting portion 13 is assembled in the connecting groove 22 to ensure that the electrode cap 1 and the electrode rod 2 can be stably fixed together. The positioning portion 12 is assembled in the positioning groove 21 to ensure the concentricity of the electrode cap 1 and the electrode rod 2, which is convenient for positioning the electrode cap 1. This arrangement facilitates the installation and disassembly of the electrode cap 1, avoids the eccentricity or non-verticality of the electrode cap 1 affecting the welding work, and improves the assembly efficiency of the electrode structure.

[0038] In one embodiment, referring to Figure 1 and Figure 2 The connecting portion 13 is provided with an external thread, and the connecting groove 22 is provided with an internal thread that matches the external thread.

[0039] As an example, an external thread is provided on the connecting portion 13, and an internal thread matching the external thread is provided on the connecting groove 22. This arrangement can improve the connection stability between the electrode cap 1 and the electrode rod 2, and facilitate the installation and disassembly of the electrode cap 1; at the same time, the position of the electrode cap 1 can be adjusted by using the threaded connection, so that it is possible to adapt to workpieces 3 to be welded with different thicknesses without replacing the electrode cap 1, thereby improving the scope of use of the equipment.

[0040] In one embodiment, referring to Figure 1 and Figure 2 An end surface of the cap body 11 away from the positioning portion 12 is a welding end surface 14 , and an edge of the welding end surface 14 is provided with a chamfered corner.

[0041] As an example, the end face of the cap body 11 away from the positioning portion 12 is a welding end face 14, which is used to clamp the workpiece 3 to be welded. A chamfer is provided on the edge of the welding end face 14, which facilitates the automatic grinding of the electrode cap 1 and solves the problem of positioning accuracy and reuse of the electrode cap 1 after removable grinding.

[0042] In one embodiment, referring to Figure 5 , the welding end face 14 is a plane.

[0043] As an example, the welding end face 14 is a plane, and the electrode cap 1 contacts the workpiece 3 to be welded more stably, thereby ensuring the welding effect.

[0044] In one embodiment, referring to Figure 1-4 A first planar slot 15 is provided on the side of the cap body 11 ; and / or a second planar slot 23 is provided on the side of the electrode rod 2 .

[0045] As an example, a first planar slot 15 is provided on the side of the cap body 11, and the first planar slot 15 serves as a clamping surface during assembly and tightening, providing convenience for people to take the electrode cap 1; a second planar slot 23 is provided on the side of the electrode rod 2, and the second planar slot 23 serves as a clamping surface during assembly and tightening, providing convenience for people to take the electrode rod 2.

[0046] In one embodiment, referring to Figure 1 and Figure 2 One end surface of the cap body 11 close to the positioning portion 12 is a force-bearing surface 16 , and the force-bearing surface 16 contacts the end surface of the electrode rod 2 .

[0047] As an example, an end face of the cap body 11 close to the positioning portion 12 is a force-bearing surface 16, which contacts the end face of the electrode rod 2, ensuring that the electrode cap 1 contacts the end face of the electrode rod 2, thereby facilitating the transmission of welding pressure.

[0048] In one embodiment, referring to Figure 3 and Figure 4The portion of the electrode rod 2 away from the electrode cap 1 is provided with a trapezoidal structure 24 . The outer diameter of the trapezoidal structure 24 close to the electrode cap 1 is larger than the outer diameter of the portion away from the electrode cap 1 .

[0049] As an example, the portion of the electrode rod 2 away from the electrode cap 1 is set as a trapezoidal structure 24 , and the outer diameter of the trapezoidal structure 24 close to the electrode cap 1 is larger than the outer diameter of the portion away from the electrode cap 1 , which can improve the position accuracy of the electrode rod 2 .

[0050] In one embodiment, referring to Figure 6 and Figure 7 The electrode structure further includes a gasket 4 , which is disposed between the electrode cap 1 and the electrode rod 2 .

[0051] As an example, the electrode structure also includes a gasket 4, which is arranged between the electrode cap 1 and the electrode rod 2. Specifically, the gasket 4 is mounted on the positioning portion 12 of the electrode cap 1, and can adjust the height of the welding end face 14 of the electrode cap 1, and is used to compensate for the grinding amount after the height of the welding end face 14 of the electrode cap 1 drops.

[0052] The present invention provides a welding device, Figure 6 and Figure 7 , including a welding gun body 5, a welding gun static arm 6, a welding gun movable arm 7 and two electrode structures; the welding gun static arm 6 is installed on the welding gun body 5; the welding gun movable arm 7 is rotatably installed on the welding gun body 5, forming a working space between the welding gun static arm 6; one electrode structure is installed on the welding gun static arm 6, and the other electrode structure is installed on the welding gun movable arm 7, and a welding space for clamping the workpiece 3 to be welded is formed between the two electrode structures.

[0053] As an example, the welding device includes a welding gun body 5, a welding gun static arm 6, a welding gun movable arm 7 and two electrode structures; during installation, the welding gun static arm 6 is installed on the welding gun body 5, and the welding gun movable arm 7 can be rotatably installed on the welding gun body 5 to form a working space between the welding gun static arm 6. Under the action of the cylinder of the welding gun body 5 (for example, a puppet welding gun body), the welding gun movable arm 7 can be flipped open to facilitate the installation of the workpiece 3 to be welded. One electrode structure is installed on the welding gun static arm 6, and the other electrode structure is installed on the welding gun movable arm 7. A welding space for clamping the workpiece 3 to be welded is formed between the two electrode structures, and the workpiece 3 to be welded is placed in the welding space for welding. Among them, the electrode structure installed on the welding gun static arm 6 is a static electrode structure, and the electrode structure installed on the welding gun movable arm 7 is a dynamic electrode structure. The electrode structure includes an electrode cap 1 and an electrode rod 2, that is, the dynamic electrode structure includes a dynamic electrode cap and a dynamic electrode rod, and the static electrode structure includes a static electrode cap and a static electrode rod. The moving electrode rod is assembled with the conical surface of the moving arm 7 of the welding gun, and the moving electrode cap is installed on the moving electrode rod; the static electrode rod is assembled with the conical surface of the static arm 6 of the welding gun, and the static electrode cap is installed on the static electrode rod; in the welding device, the static electrode cap is docked with the moving electrode cap, and the workpiece 3 to be welded is placed between the two. The moving electrode cap adopts an ordinary electrode cap 1 with a small end face 14 as the welding end face, and the static electrode cap adopts an electrode cap 1 with a large end face 14 as the welding end face. In this way, a small end face and a large end face are set. After the electrode is loosened, the small end face can still face the large end face, which can form an asymmetric electrode process and absorb the position deviation of the electrode cap 1 caused by the loosening of the moving electrode cap. It solves the problem in the prior art that the moving and static electrode caps are two small end faces, and after the electrode is loosened, the two small end faces of the electrodes will be misaligned, and then the weld point will be distorted.

[0054] In the welding device in this example, the static electrode cap is the appearance side, and its welding end face 14 adopts a large end face, and the dynamic electrode cap is the non-appearance side, retaining the existing conventional electrode design, and its welding end face 14 adopts a small end face. This asymmetric electrode can effectively improve the welding current density and reduce energy consumption while ensuring the appearance of the weld; at the same time, the rounded corners of the welding end face 14 can realize automatic grinding of the electrode and compensate for the grinding height, so that the electrode cap 1 can be reused to achieve the purpose of reducing production costs; it can solve the appearance quality problems of the existing welding device, such as the easy distortion of the weld spot and the excessive deep indentation of the appearance surface; it can also solve the appearance problems of the bulge and burr of the coating on the edge of the zinc-aluminum-magnesium coated sheet metal weld (including manual lines and robot automatic production lines).

[0055] In one embodiment, referring to Figure 6 and Figure 7 The welding end face 14 of the electrode cap 1 in the movable electrode structure installed on the movable arm 7 of the welding gun is a small end face, and the welding end face 14 of the electrode cap 1 in the static electrode structure installed on the static arm 6 of the welding gun is a large end face.

[0056] As an example, the welding end face 14 of the electrode cap 1 in the moving electrode structure installed on the moving arm 7 of the welding gun is a small end face with a large rounded chamfered edge. The small end face can concentrate the welding current to form a weld point; the welding end face 14 of the electrode cap 1 in the static electrode structure installed on the static arm 6 of the welding gun is a large end face, which can ensure the flatness of the weld point when observed from the outside during the welding process, thereby solving the problem of excessively deep weld point indentations in existing welding devices.

[0057] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. An electrode structure, characterized in that: Including electrode cap and electrode rod; The electrode cap comprises a cap body, a positioning portion and a connecting portion sequentially arranged along a first direction, wherein the cap body is used to clamp a workpiece to be welded; The electrode rod is provided with a positioning groove and a connecting groove in sequence along a first direction; The connecting portion is assembled in the connecting groove, and the positioning portion is assembled in the positioning groove.

2. The electrode structure according to claim 1, characterized in that The connecting portion is provided with an external thread, and the connecting groove is provided with an internal thread matching the external thread.

3. The electrode structure according to claim 1, characterized in that An end surface of the cap body away from the positioning portion is a welding end surface, and an edge of the welding end surface is provided with a rounded corner.

4. The electrode structure according to claim 3, characterized in that The welding end surface is a plane.

5. The electrode structure according to claim 1, characterized in that A first planar slot is provided on the side of the cap body; And / or, a second planar slot is provided on the side surface of the electrode rod.

6. The electrode structure according to claim 1, characterized in that An end surface of the cap body close to the positioning portion is a force-bearing surface, and the force-bearing surface is in contact with the end surface of the electrode rod.

7. The electrode structure according to claim 1, characterized in that The portion of the electrode rod away from the electrode cap is configured as a trapezoidal structure, and the outer diameter of the trapezoidal structure in a region close to the electrode cap is larger than the outer diameter of the region away from the electrode cap.

8. The electrode structure according to claim 1, characterized in that The electrode structure further includes a gasket, which is arranged between the electrode cap and the electrode rod.

9. A welding device, characterized in that: It comprises a welding gun body, a welding gun static arm, a welding gun movable arm and two electrode structures according to any one of claims 1 to 8; The welding gun static arm is installed on the welding gun body; The welding gun movable arm is rotatably mounted on the welding gun body, forming a working space between the movable arm and the welding gun static arm; One electrode structure is installed on the static arm of the welding gun, and the other electrode structure is installed on the movable arm of the welding gun. A welding space for clamping a workpiece to be welded is formed between the two electrode structures.

10. The welding device according to claim 9, characterized in that The welding end face of the electrode cap in the electrode structure installed on the movable arm of the welding gun is a small end face; The welding end face of the electrode cap in the electrode structure installed on the static arm of the welding gun is a large end face.

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