Air cathode welding tool

Abstract

The utility model discloses an air cathode welding tool which comprises a base plate, a first positioning groove, a second positioning groove, a first clamping groove and a second clamping groove. The lower welding pen is provided with a lower welding needle; the upper welding pen is arranged above the lower welding pen and is provided with an upper welding needle; a through groove allowing the lower welding pin to penetrate through is formed below the first positioning groove, the top face of the lower welding pin is flush with the bottom face of the first positioning groove, and a space allowing the air cathode to penetrate through is formed between the lower welding pin and the upper welding pin and used for welding the air cathode. The pressing mechanism has the advantages that the upper welding pen and the lower welding pen are connected through the guide sleeve and the guide column, vertical pressing is achieved, and compared with an additional pressing mechanism of the intermediate frequency spot welding machine, the pressing mechanism is simpler in structural form and better in welding effect.

Description

Technical Field

[0001] The utility model relates to the field of resistance welding, in particular to an air cathode welding tool. Background Art

[0002] In portable metal-air batteries, two air cathodes need to be welded at a fixed distance through a U-shaped copper sheet. Because both air cathodes are provided with nickel mesh, during the welding process, the base materials of nickel and copper easily form low-melting-point eutectics with impurities, and the solubility of oxygen and hydrogen in liquid nickel is very high, which decreases when cooled, which may cause weld porosity, thus making nickel-copper welding difficult.

[0003] Moreover, due to the special structure of the air cathode, the welding pens of the currently purchased medium-frequency spot welding machines are all straight up and down structures, which cannot be inserted between the two air cathodes for welding. The welding can only be done manually with a handheld electric soldering iron, and only one point can be welded at a time. In addition, the failure rate of soldering between nickel and copper is high. This results in very low efficiency in the existing air cathode welding process, affecting the normal production of products. Summary of the invention

[0004] The utility model aims to provide an air cathode welding tool, which can conveniently weld the air cathode and greatly improve the welding efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An air cathode welding tool, comprising:

[0007] A backing plate, wherein a first positioning groove for carrying the air cathode is provided on the backing plate;

[0008] A lower soldering pen, the lower soldering pen having a lower soldering needle;

[0009] An upper soldering pen is arranged above the lower soldering pen, and the upper soldering pen has an upper soldering needle;

[0010] A through slot for the lower welding needle to pass through is provided below the first positioning slot, the top surface of the lower welding needle is flush with the bottom surface of the first positioning slot, and a space for the air cathode to pass through is formed between the lower welding needle and the upper welding needle for welding the air cathode.

[0011] Preferably, the upper soldering pen and the lower soldering pen have the same specifications, the lower soldering pen comprises an insulating plate, an electric wire is arranged inside the insulating plate, one end of the electric wire is connected to the copper bar, and the lower soldering needle is fixedly arranged between the copper bar and the soldering needle clamping plate.

[0012] Preferably, an upper pressing plate is provided on the upper portion of the insulating plate of the upper soldering pen, and a handle is provided on the upper pressing plate.

[0013] Preferably, a lower pressing plate is provided at the lower part of the insulating plate of the upper welding pen, and a guide column connected to the lower welding pen is provided at the lower part of the lower pressing plate.

[0014] Preferably, a guide sleeve for accommodating a guide column is provided above the insulating plate of the lower welding pen.

[0015] Preferably, a space for fixing the upper soldering pen copper bar is formed between the upper pressing plate and the lower pressing plate.

[0016] Preferably, the pad and the insulating plate of the lower soldering pen are both arranged on a bottom plate, and a second positioning groove for accommodating the copper bar of the lower soldering pen is provided on the bottom plate.

[0017] The beneficial effects of the utility model are:

[0018] 1. The upper welding pen and the lower welding pen are connected by a guide sleeve and a guide column to achieve up and down pressure movement. Compared with the additional pressure mechanism of the medium frequency spot welding machine, the structure is simpler and the welding effect is better.

[0019] 2. This technical solution can weld two points at the same time, and there is a first positioning groove to position the workpiece. The spot welding operation can be performed quickly and accurately by only pressing down the upper welding pen. After the workpiece is turned over, the first positioning groove can be used again for rapid positioning. Compared with manual single-point welding, the speed and welding quality have been significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the utility model;

[0021] Figure 2 It is a schematic diagram of the assembly of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the lower soldering pen;

[0023] Figure 4 is a schematic diagram of the structure of the air cathode;

[0024] Figure 5 This is a schematic diagram of the structure of the utility model with an air cathode installed;

[0025] Figure 6 Cross-sectional view of the first positioning groove for installing the air cathode.

[0026] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 and Figure 2 As shown, an air cathode welding tool according to an embodiment of the utility model comprises:

[0029] The backing plate 2 is provided with a first positioning groove 21 for supporting the air cathode; Figure 4 The figure shows the schematic diagram of the structure of the air cathode. Two U-shaped copper sheets 200 need to be welded to two air cathodes 100 respectively. Figure 4 The middle dot is the welding point. Since a nickel mesh is provided on the air cathode 100 and the connection between nickel and copper is not strong enough by soldering, in the present application, both sides of each dot are welded simultaneously to improve the reliability of welding.

[0030] A lower soldering pen 3, the lower soldering pen 3 has a lower soldering needle 35;

[0031] An upper soldering pen 5 is arranged above the lower soldering pen 3, and the upper soldering pen 5 has an upper soldering needle;

[0032] like Figure 3 As shown, the upper soldering pen 5 has the same specifications and structure as the lower soldering pen 3, so only the structure of the lower soldering pen 3 is described in this embodiment. The lower soldering pen 3 includes an insulating plate 31, and an electric wire 32 is arranged inside the insulating plate 31. One end of the electric wire 32 is connected to a copper bar 33, and a lower soldering pin 35 is fixedly arranged between the copper bar 33 and the soldering pin clamp 34. The other end of the electric wire 32 is connected to a power source to provide power to the lower soldering pin 35 for welding. The copper bar 33 and the soldering pin clamp 34 are connected by bolts, and a space for fixing the lower soldering pin 35 is formed between the two. The insulating plate 31 is composed of a multilayer board, and the multilayer board is fixedly connected by bolts, and a space for the power supply line 32 to pass through is reserved.

[0033] A through slot 22 for the lower welding pin 35 to pass through is provided below the first positioning slot 21. The top surface of the lower welding pin 35 is flush with the bottom surface of the first positioning slot 21. When the air cathode is installed into the first positioning slot 21, the welding point at the bottom is just in contact with the top surface of the lower welding pin 35, which is convenient for welding. A space for the air cathode to pass through is formed between the lower welding pin 35 and the upper welding pin, which is used for welding the air cathode. The upper welding pin is located directly above the lower welding pin 35, and the two are symmetrically arranged relative to the air cathode to be welded.

[0034] An upper pressing plate 6 is provided on the upper insulating plate of the upper soldering pen 5 , and a handle 7 is provided on the upper pressing plate 6 .

[0035] A lower pressing plate 4 is provided at the lower part of the insulating plate of the upper soldering pen 5 .

[0036] The upper pressing plate 6 and the lower pressing plate 4 are all connected to the insulating plate of the upper soldering pen 5 by bolts. The upper pressing plate 6 and the lower pressing plate 4 are also connected by bolts, and a space for fixing the copper strip of the upper soldering pen 5 is formed between the two.

[0037] When the handle 7 is pressed down, the upper pressing plate 6, the lower pressing plate 4 and the upper welding pen 5 are driven to move downward, and the upper welding needle of the upper welding pen 5 and the lower welding needle 35 of the lower welding pen 3 simultaneously contact the two sides of the air cathode welding point to be welded, and the wire 32 is energized to weld the air cathode. After welding is completed, the handle 7 is moved up and the wire 32 is de-energized.

[0038] A guide column 41 connected to the lower soldering pen 3 is provided at the lower portion of the lower pressing plate 4 .

[0039] A guide sleeve 36 for accommodating the guide column 41 is arranged above the insulating plate 31 of the lower soldering pen 3 .

[0040] like Figure 5 and Figure 6 As shown, when the tooling is assembled, the guide column 41 has been installed in the guide sleeve 36. Pressing down or moving up the handle 7 only allows the guide column 41 to move up and down in the guide sleeve 36 without falling out, thereby positioning and guiding the downward movement trajectory of the upper welding needle to avoid skewing.

[0041] An elastic member (such as a spring) can also be pre-arranged in the guide sleeve 36. When the handle 7 is pressed down for welding, the elastic member is squeezed. When the handle 7 is released after welding, the elastic member pushes the guide column 41 upward, so that the upper welding needle is automatically reset.

[0042] The backing plate 2 and the insulating plate 31 of the lower soldering pen 3 are both arranged on the base plate 1. The base plate 1 is provided with a second positioning groove 11 for accommodating the copper bar 33 of the lower soldering pen 3. The second positioning groove 11 of the base plate 1 protects the lower soldering pen 3 to prevent it from being directly exposed to the air and causing damage.

[0043] When assembling the device, the guide column 41 is pre-installed in the guide sleeve 36. Under normal conditions, the space between the lower welding needle 35 and the upper welding needle is larger than the thickness of the air cathode, so that the air cathode can be smoothly loaded into the tooling. During welding, the handle 7 is pressed down so that the lower welding needle 35 and the upper welding needle are in close contact with both sides of the air cathode, and the symmetrical points on both sides are welded simultaneously, thereby improving the welding efficiency and the welding quality. After welding on one side, the handle 7 is released, and the upper welding needle returns to its position under the action of the elastic member. The air cathode is taken out and turned over, and then loaded into the tooling again to weld the air cathode on the other side.

[0044] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., 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 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 protection content of the present invention.

[0046] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An air cathode welding tool, characterized in that: include: A backing plate, wherein the backing plate is provided with a first positioning groove for supporting the air cathode; A lower soldering pen having a lower soldering pin; An upper soldering pen is arranged above the lower soldering pen, and the upper soldering pen has an upper soldering needle; A through groove for the lower welding needle to pass through is provided below the first positioning groove. The top surface of the lower welding needle is flush with the bottom surface of the first positioning groove. A space for the air cathode to pass through is formed between the lower welding needle and the upper welding needle for welding the air cathode.

2. The air cathode welding tool according to claim 1, characterized in that: The upper soldering pen and the lower soldering pen have the same specifications. The lower soldering pen includes an insulating plate with an electric wire arranged inside the insulating plate. One end of the electric wire is connected to a copper bar. The lower soldering needle is fixedly arranged between the copper bar and the soldering needle clamping plate.

3. The air cathode welding tool according to claim 2, characterized in that: An upper pressing plate is provided on the upper portion of the insulating plate of the upper soldering pen, and a handle is provided on the upper pressing plate.

4. The air cathode welding tool according to claim 3, characterized in that: A lower pressing plate is provided at the lower part of the insulating plate of the upper welding pen, and a guide column connected to the lower welding pen is provided at the lower part of the lower pressing plate.

5. The air cathode welding tool according to claim 4, characterized in that: A guide sleeve for accommodating a guide column is provided above the insulating plate of the lower welding pen.

6. The air cathode welding tool according to claim 4, characterized in that: A space for fixing the upper soldering pen copper bar is formed between the upper pressing plate and the lower pressing plate.

7. The air cathode welding tool according to claim 2, characterized in that: The pad and the insulating plate of the lower soldering pen are both arranged on the bottom plate, and the bottom plate is provided with a second positioning groove for accommodating the copper bar of the lower soldering pen.

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