Split electrode for split-flow type electrode device for projection welding

Abstract

The utility model aims to provide a split electrode for a split-flow type electrode device aiming at the requirement that the split-flow type electrode device for a projection welding machine adopts a split electrode split-flow type structure, and the split electrode for the split-flow type electrode device for projection welding comprises a split electrode body, the branch electrode comprises a branch electrode body, the branch electrode body is provided with a total electrode connecting surface used for being electrically connected with a total electrode, the total electrode connecting surface is provided with a boss protruding downwards, and the boss is used for arranging a current sensor. The space occupied by the current sensor sleeving the surface of the sub-electrode is omitted, the sub-electrode keeps more current space corresponding to the position of the bump, the structure of the sub-electrode is simplified, the current sensor is positioned through the connecting seat and the boss, the position of the current sensor can be stable, and the sub-electrode can be conveniently connected with the total electrode.

Description

Technical Field

[0001] The utility model relates to the technical field of electric welding equipment, in particular to a split electrode for a split-current electrode device for projection welding. Background Art

[0002] In order to solve the problem that the existing projection welding machine cannot know the welding quality of each convex point during projection welding, our company has developed a shunt electrode device for projection welding machine, such as Figure 1 As shown, the electrode device includes a main electrode 100 and at least two sub-electrodes 200, each of which is arranged on the surface of the main electrode at intervals, and the main electrode and each sub-electrode are mutually current-conductive, and a current sensor 300 is arranged on each sub-electrode for detecting the current passing through the sub-electrode. During welding, each sub-electrode corresponds to a convex point. With the above structure, the sub-electrode needs to be fixedly connected with the main electrode, and there needs to be a certain interval between each sub-electrode to prevent current signal interference. Therefore, it is necessary to provide a sub-electrode to cooperate with the main electrode to obtain a shunt-type electrode device; in addition, the structure of the sub-electrode needs to be designed to facilitate the installation and fixation of the current sensor and correspond to the position of the welded convex point. Utility Model Content

[0003] The utility model aims to provide a split electrode for a shunt type electrode device for a projection welding machine in response to the demand for a split electrode shunt type structure.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A sub-electrode for a shunt-type electrode device for projection welding comprises a sub-electrode body, a main electrode connection surface for conductive connection with a main electrode is arranged on the sub-electrode body, a downwardly convex boss is arranged on the main electrode connection surface, and the boss is used to arrange a current sensor;

[0006] A connection structure for conductive connection with the main electrode is arranged on the boss;

[0007] The connection structure is one or a group of connection holes or connection threaded holes, and the center lines of the connection holes or connection threaded holes are arranged along the height of the boss;

[0008] A connection seat is provided at the connection end of the sub-electrode body, the connection seat protrudes from the sub-electrode body, and the boss is provided below the connection seat;

[0009] The connecting seat is vertically arranged with the sub-electrode body;

[0010] The cross section of the boss is oblong;

[0011] The front and rear surfaces of the sub-electrode body are arranged in parallel and are both planes, and the left and right surfaces are arranged in parallel and staggered. The sub-electrode is arranged adjacent to other sub-electrodes through the left and right surfaces.

[0012] The sub-electrode used in the shunt-type electrode device for projection welding adopting the structure of the utility model is provided with a boss on the total electrode connection surface of the sub-electrode, and the current sensor can be mounted on the surface of the boss, thereby eliminating the space occupied by the current sensor outside the sub-electrode surface, so that the sub-electrode has more space to maintain current corresponding to the position of the boss, thereby simplifying the structure of the sub-electrode.

[0013] The sub-electrode used in the shunt-type electrode device for projection welding adopts the structure of the utility model. Since a connecting seat is provided at the lower end of the sub-electrode, and the boss and the connecting structure are respectively provided below the connecting seat, the current sensor is positioned by the connecting seat and the boss, so that the position of the current sensor can be stabilized, which facilitates the connection between the sub-electrode and the main electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the split-current electrode device described in the background technology of the utility model, in which part of the split electrodes are removed;

[0015] Figure 2 This is a schematic diagram of the structure of the sub-electrode embodiment of the utility model;

[0016] Figure 3-Figure 7 They are respectively schematic structural diagrams of embodiments of the sub-electrodes of the present utility model.

[0017] Description of Reference Numerals

[0018] 100 - total electrodes;

[0019] 200-sub-electrode; 201-welding end; 202-connection seat; 203-connection structure; 204-boss; 205-low step surface; 206-high step surface; 300-current sensor; DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0021] like Figure 2-Figure 7As shown, the sub-electrode used in the shunt-type electrode device for projection welding of the utility model structure includes a sub-electrode body, and the sub-electrode 200 is used to be electrically connected with the main electrode 100, shunt the current of the main electrode, and serve as a welding convex point for welding at the welding end. A total electrode connection surface for connecting the main electrode is provided on the sub-electrode 200, and a downward convex boss 204 is provided on the main electrode connection surface. The boss 204 constitutes a current detection position, and the Hall coil or Rogowski coil is sleeved outside the boss of the corresponding electrode. In this way, a space for accommodating the Hall coil or Rogowski coil is formed between the total electrode connection surface of the sub-electrode and the sub-electrode connection surface of the main electrode and the outer surface of the boss, that is, a sub-current sensor can be provided at the bottom of the sub-electrode, which can reduce the space occupied by the current sensor and leave a relatively large design space for the shape of the sub-electrode. It is best that the shape of the boss is compatible with the shape of the Hall coil or Rogowski coil. When the Hall coil or Rogowski coil is an oblong ring, the boss is an oblong, and the Hall coil or Rogowski coil is sleeved outside the boss. The Hall coil or Rogowski coil senses the welding current flowing through the sub-electrode.

[0022] The boss is provided with a connection hole or a connection threaded hole, which serves as a connection structure 203 for connecting the sub-electrode with the main electrode, and can realize connecting the main electrode and the sub-electrode by screws or bolts. The connection hole or the connection threaded hole is a through hole.

[0023] The shape of the sub-electrode body is generally columnar or conical, such as a straight column such as a cylinder, a rectangular column, a triangular prism, or a straight cone such as a cone or a pyramid.

[0024] The shape of the sub-electrode body may also be an irregular geometric shape, such as L-shape, trapezoid, oblique column or oblique cone, etc. In short, the sub-electrodes are isolated from each other and not connected.

[0025] In the preferred embodiment structure of the utility model, the cross section of the sub-electrode is rectangular, the sub-electrode body is bent at a right angle, one of the bent ends is used as a connection seat 202, and the other bent end is used for welding as a welding end 201, and the boss and the connection structure are both arranged on the connection seat 202. With the above structure, the current sensor is sleeved outside the boss, and the connection seat is connected to the main electrode, and a space for accommodating the current sensor is formed between the connection seat and the main electrode. The connection seat and the sub-electrode connection surface of the main electrode sandwich the current sensor in the middle, which helps to stabilize the current sensor. The connection structure is arranged on the connection seat, and when the sub-electrode is installed, the connection seat can face the same direction, which is more convenient for installation and fixation.

[0026] like Figure 3-Figure 7 As shown, in a further improved structure, the sub-electrode body is a special-shaped structure, the front and rear surfaces of the sub-electrode body are arranged in parallel and are both planes, and the left and right surfaces are arranged in parallel but at least one surface is a stepped surface, such as Figure 3As shown, the left side surface is a step surface, the surface of the welding end is concave to form a low step surface 205, and the surface of the connection end is a high step surface 206. The low step surface 205 and the high step surface 206 are connected by a transition of a circular arc surface. Figure 4-Figure 6 As shown, in this embodiment, both the left and right surfaces of the sub-electrode body are step surfaces. Figure 4 and Figure 5 The left surface of the welding end is a low-step surface, and the right surface is a high-step surface. The left surface of the connecting end is a high-step surface, and the right surface is a low-step surface, forming a structure in which the welding end and the connecting end are dislocated up and down. The connection between the connecting end and the welding section is connected by a bevel transition, and the bevel and the side surface are connected by an arc. Figure 6 Then Figure 4 and Figure 5 On the contrary, its welding end is misaligned to the right and its connecting end is misaligned to the left. Figure 7 One side surface is a step surface, and the surface of the connection end on the right side surface is concave to form a low step surface, and the surface of the welding end is a high step surface. The staggered connection between the connection end and the welding end can make the welding end correspond to the position of the bump when the connection end does not correspond to the bump, solving the problem that the welding end of the sub-electrode cannot be accurately aligned with the bump position. Normally, the low step surface and the high step surface of adjacent sub-electrodes are matched in position and size, and when the two sub-electrodes are installed side by side, the two can match each other. The use of this structure can reduce the length and / or width of the cross-section of the welding part of the electrode welding end, so that the position of the welding end can be adjusted without changing the position of the connection end, so that the welding end corresponds to the bump position, and the size of the sub-electrode welding part can also be adjusted to adapt to the position of the bump while improving the accuracy of welding. Each sub-electrode is adjacent to each other through the left and right surfaces.

Claims

1. A split electrode for a split-current electrode device for projection welding, characterized in that: The invention comprises a sub-electrode body, on which a total electrode connection surface for conductive connection with a total electrode is arranged, and a downwardly convex boss is arranged on the total electrode connection surface, and the boss is used for arranging a current sensor.

2. The split electrode for the split current electrode device for projection welding according to claim 1, characterized in that: A connecting structure for electrically conductive connection with a main electrode is arranged on the boss.

3. The split electrode for the split current electrode device for projection welding according to claim 2, characterized in that: The connection structure is one or a group of connection holes or connection threaded holes, and the center lines of the connection holes or connection threaded holes are arranged along the height of the boss.

4. The split electrode for the split current electrode device for projection welding according to claim 1, characterized in that: A connection seat is arranged at the connection end of the sub-electrode body, the connection seat protrudes out of the sub-electrode body, and the boss is arranged below the connection seat.

5. The split electrode for the split current electrode device for projection welding according to claim 4, characterized in that: The connecting seat and the sub-electrode body are vertically arranged.

6. The split electrode for the split current electrode device for projection welding according to claim 1, characterized in that: The cross section of the boss is oblong.

7. The split electrode for the split current electrode device for projection welding according to claim 1, characterized in that: The front and rear surfaces of the sub-electrode body are arranged in parallel and are both planes, and the left and right surfaces are arranged in parallel and staggered. The sub-electrode is arranged adjacent to other sub-electrodes through the left and right surfaces.

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