Magnetic iron for electric welding

Abstract

The utility model relates to a magnetic attraction iron for electric welding, including conducting shell and the screw rod of fixed at the top of conducting shell, the bottom of conducting shell is equipped with the inner chamber, the inside of inner chamber is equipped with strong magnet, the top of screw rod is equipped with the through hole that communicates with the inner chamber, the top of strong magnet is fixed with the limit rod, the other end of limit rod passes through the through hole and is equipped with the limit ring, the wire connection opening terminal and spring are respectively set up on the screw rod, the fixed nut for compressing wire connection opening terminal is screwly connected on the screw rod, the one end of spring and the top of fixed nut contact, the other end and the bottom of limit ring contact, the utility model discloses when welding the inner wall of the workpiece of cylindrical container or circular pipeline, place the magnetic attraction iron on the inner wall of workpiece, and strong magnet will be adsorbed by workpiece, and the limit ring on limit rod will push spring compression, and spring will push conducting shell and compress in the inner wall of workpiece, let magnetic attraction iron can effectively adsorb on the inner wall of workpiece.

Description

Technical Field

[0001] This utility model relates to the field of welding machine grounding technology, specifically to a magnetic grounding device for electric welding. Background Technology

[0002] When welding workpieces with an electric welding machine, the ground and welding rod are connected to the two output electrodes of the welding machine via welding wires. Only when the welding rod and ground form a closed circuit can welding occur. Currently, the common grounding method for electric welding operations is to place the ground on the surface of the workpiece or to use grounding pliers to clamp the workpiece. However, when welding cylindrical containers or circular pipes, it is difficult to place the ground on the inner wall of the workpiece, or the grounding pliers cannot clamp the workpiece, leading to difficulties in the welding operation. Utility Model Content

[0003] The purpose of this invention is to design a magnetic grounding iron for electric welding, which can solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A magnetic grounding iron for electric welding includes a conductive outer shell and a screw fixed to the top of the conductive outer shell. The bottom of the conductive outer shell has an inner cavity, and a strong magnet is disposed inside the inner cavity. The top of the screw has a through hole communicating with the inner cavity. A limiting rod is fixed to the top of the strong magnet. The other end of the limiting rod passes through the through hole and is provided with a limiting ring. A wiring opening terminal and a spring are respectively sleeved on the screw. A fixing nut for pressing the wiring opening terminal is threaded onto the screw. One end of the spring contacts the top of the fixing nut, and the other end contacts the bottom of the limiting ring.

[0006] Furthermore, a rubber pad is attached to the bottom of the strong magnet.

[0007] Furthermore, an arc-inducing iron plate is sleeved on the screw, and the arc-inducing iron plate is located between the conductive outer shell and the wiring opening terminal.

[0008] Furthermore, the surface of the arc-initiating iron plate is provided with friction texture.

[0009] Furthermore, the upper outer surface of the limiting rod is provided with an external thread, the limiting ring is provided with a through hole for the limiting rod to pass through, and the top of the limiting ring is provided with a wing nut that is threadedly connected to the external thread.

[0010] Furthermore, the bottom of the conductive outer casing is provided with two opposing triangular notches.

[0011] The beneficial effects of this utility model are as follows:

[0012] When welding the inner wall of a cylindrical container or circular pipe, placing the magnetic grounding iron on the inner wall of the workpiece will cause the strong magnet to be attracted by the workpiece and move. Part of the strong magnet will be pulled out of the conductive shell. During the movement of the strong magnet, the limiting rod will move within the through hole. The limiting ring on the limiting rod will push the spring to compress. Under the elastic action of the spring, the end of the spring away from the limiting ring will push the conductive shell to press firmly against the inner wall of the workpiece, so that the magnetic grounding iron can be effectively attracted to the inner wall of the workpiece, solving the problem of difficult welding operations. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of this utility model placed on the inner wall of a cylindrical container or a circular pipe.

[0018] Figure 5 This is a schematic diagram of the conductive outer shell of this utility model having a triangular notch.

[0019] The names of the components shown in the diagram are as follows:

[0020] 1. Conductive outer shell; 2. Screw; 3. Inner cavity; 4. Strong magnet; 5. Through hole; 6. Limiting rod; 7. Limiting ring; 8. Wiring opening terminal; 9. Spring; 10. Fixing nut; 11. Rubber pad; 12. Arc-inducing iron plate; 13. Friction texture; 14. External thread; 15. Wing nut; 16. Triangular notch. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] like Figure 1-4As shown, a magnetic grounding iron for electric welding includes a conductive outer shell 1 and a screw 2 fixed to the top of the conductive outer shell 1. The bottom of the conductive outer shell 1 is provided with an inner cavity 3, and a strong magnet 4 is provided inside the inner cavity 3. The top of the screw 2 is provided with a through hole 5 communicating with the inner cavity 3. A limiting rod 6 is fixed to the top of the strong magnet 4. The cooperation between the limiting rod 6 and the through hole 5 can limit the movement direction of the strong magnet 4, so that the strong magnet 4 can only move along the axial direction of the through hole 5, avoiding excessive tilting of the strong magnet 4 during movement. The other end of the limiting rod 6 passes through the through hole 5 and is provided with a limiting ring 7. The limiting ring 7 can limit the movement distance of the strong magnet 4.

[0023] A terminal block 8, a spring 9, and an arc-starting plate 12 are respectively fitted onto the screw 2. The terminal block 8 and the arc-starting plate 12 are arranged sequentially from top to bottom. The terminal block 8 is used to connect to the welding wire of the welding machine. During the welding operation, the arc-starting plate 12 can not only scrape off the insulating slag at the end of the welding rod to ensure successful arc ignition, but also allow the end of the welding rod to contact the arc-starting plate 12 before welding the workpiece, igniting the welding rod into a molten state to achieve optimal welding conditions and thus improve welding quality. The surface of the iron plate 12 is provided with friction texture 13, which can improve the scraping efficiency of insulating welding slag; the screw 2 is threaded with a fixing nut 10 for pressing the terminal 8 of the wiring opening. After loosening the fixing nut 10, the arc-starting iron plate 12 or the terminal 8 of the wiring opening can be easily replaced; one end of the spring 9 contacts the top of the fixing nut 10 and the other end contacts the bottom of the limiting ring 7. When the limiting ring 7 moves in the direction close to the fixing nut 10, the elasticity of the spring 9 after compression presses the conductive shell 1 onto the surface of the workpiece.

[0024] The bottom of the strong magnet 4 is covered with a rubber pad 11, which has a certain heat insulation effect, can prevent the strong magnet 4 from conducting electricity and demagnetizing, and can also prevent the bottom of the strong magnet 4 from adsorbing debris, making it easy to clean; the upper outer surface of the limiting rod 6 is provided with an external thread 14, and the limiting ring 7 is provided with a through hole for the limiting rod 6 to pass through. The top of the limiting ring 7 is provided with a wing nut 15 that is threaded to the external thread 14, which facilitates the replacement of springs 9 of different lengths and the adjustment of the moving distance of the strong magnet 4. It is suitable for cylindrical containers or circular pipes with various inner diameters, increasing its practicality.

[0025] Among them, such as Figure 5 As shown, two opposing triangular notches can also be provided at the bottom of the conductive shell 1. The conductive shell 1 can be snapped onto the outer wall of the cylindrical workpiece through the two triangular notches, which facilitates magnetic attraction and adsorption.

[0026] Working principle:

[0027] like Figure 3 and 4As shown, during the use of the magnetic grounding iron, when welding the inner wall of a cylindrical container or circular pipe, the magnetic grounding iron is placed on the inner wall of the workpiece. The strong magnet 4 will be attracted by the workpiece and move, allowing part of the strong magnet 4 to be pulled out of the conductive shell 1. During the movement of the strong magnet 4, the limiting rod 6 will move within the through hole 5. The limiting ring 7 on the limiting rod 6 will push the spring 9 to compress. Under the elastic action of the spring 9, the end of the spring 9 away from the limiting ring 7 will push the conductive shell 1 to press firmly against the inner wall of the workpiece, allowing the magnetic grounding iron to be effectively attracted to the inner wall of the workpiece, solving the problem of difficult welding operations. After the magnetic grounding iron is fixed, the welding wire at one end of the welding machine can be connected to the terminal of the wiring opening, and then welding rods can be used for welding operations.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A magnetic grounding iron for electric welding, characterized in that, The device includes a conductive housing (1) and a screw (2) fixed to the top of the conductive housing (1). The bottom of the conductive housing (1) is provided with an inner cavity (3). A strong magnet (4) is provided inside the inner cavity (3). The top of the screw (2) is provided with a through hole (5) communicating with the inner cavity (3). A limit rod (6) is fixed to the top of the strong magnet (4). The other end of the limit rod (6) passes through the through hole (5) and is provided with a limit ring (7). A wiring opening terminal (8) and a spring (9) are respectively sleeved on the screw (2). A fixing nut (10) for pressing the wiring opening terminal (8) is threaded on the screw (2). One end of the spring (9) contacts the top of the fixing nut (10) and the other end contacts the bottom of the limit ring (7).

2. The magnetic grounding iron for electric welding according to claim 1, characterized in that, A rubber pad (11) is attached to the bottom of the strong magnet (4).

3. The magnetic grounding iron for electric welding according to claim 1, characterized in that, An arc-inducing iron plate (12) is sleeved on the screw (2), and the arc-inducing iron plate (12) is located between the conductive shell (1) and the wiring opening terminal (8).

4. The magnetic grounding iron for electric welding according to claim 3, characterized in that, The surface of the arc-inducing iron plate (12) is provided with friction texture (13).

5. The magnetic grounding iron for electric welding according to claim 1, characterized in that, The upper outer surface of the limiting rod (6) is provided with an external thread (14), the limiting ring (7) is provided with a through hole for the limiting rod (6) to pass through, and the top of the limiting ring (7) is provided with a wing nut (15) that is threadedly connected to the external thread (14).

6. The magnetic grounding iron for electric welding according to claim 1, characterized in that, The bottom of the conductive outer shell (1) is provided with two opposing triangular notches (16).

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