A welding pliers

Abstract

The invention discloses electrode holders. The electrode holders comprise a handle, an inner container and an ejector rod. The inner container is installed in the handle. The ejector rod is arranged in the inner container. The ejector rod is composed of a mandrel and a check block fixed to the tail end of the mandrel. A spring is arranged at the portion, located at one end of the check block, in the inner container and fixed in the inner container through a spring seat. A clamping rod is fixed to the mandrel and penetrates through a clamping rod motion groove formed in the inner container to be arranged at the outer side of the handle. The inner container is provided with a transverse installing cavity, a longitudinal installing cavity, an oblique installing cavity, a mandrel installing hole and a spring installing cavity. The inner container is arranged in the handle, so that the situation that the spring falls due to the influence of temperature is avoided. Meanwhile, the handle is composed of an inner-layer non-primary-combustion insulating shell, an outer-layer non-primary-combustion insulating shell and intermediate metal, so that the handle is not liable to be broken in the using process, and the service life of the electrode holders is greatly prolonged; a welding rod is installed and locked through the cavities, so that stability is good, and the welding rod is not liable to loosen.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to an electric welding tool, in particular to an electric welding clamp. Background technique [0002] Welding pliers are a tool used to hold the electrode, conduct current and weld. It is used in conjunction with the arc welding machine. During manual arc welding, it is used to hold and manipulate the electrode and ensure the insulation of the hand-held electrode that is electrically connected to the electrode. appliance. It is widely used in the technical field of mechanical welding, but the welding pliers currently on the market each have their advantages and disadvantages in practical applications. For example, the Chinese patent whose publication number is CN103042291 A discloses a kind of electric welding tongs, the handle is connected to the main clamping rod during the electric welding tongs, the auxiliary clamping rod is installed on the main clamping rod, and the front end...

AI Technical Summary

Problems solved by technology

[0006] (1) The shells of existing electric welding tongs are mostly single-layer insulators, which are easily broken by impact during construction and moving, and cannot be used after being broken, directly causing losses;

[0007] (2) Since most of the compression springs of the existing electric welding tongs are exposed outside, it is easy to collide with the positive and negative ground irons to ignite and burn, causing the spring to fall, causing the jaws to be unable to clamp the welding rod, and causing the electric welding tongs to be unusable. At the same time, the setting position of the spring and the head of the tongs of the welding handle will generate high temperature, and the spring will deform and become soft after being affected by the high temperature, so that the spring will not support the jaws to clamp the electrode, and the electrode will become loose, so that the direction and alignment of the electrode cannot be grasped. When the welding rod is loose, the welding rod will naturally ignite and burn with the jaws, and the jaws will be seriously damaged and deformed. When the jaws are severely deformed, the welding rod cannot be clamped firmly, so that the welding tongs cannot be used, which directly causes losses;

[0008] (3) Since the existing electric welding tongs put welding rods of different angles and directions in the jaws of the head, when using torch welding, the welding rods tend to sway, which affects the operation, and the welding jaws of the head are exposed to the left and right. Area The base of the jaws and the upper cover pressing the welding rod, the base and the upper cover pressing the welding rod have a large area without the protection of the insulator shell, and the base of the jaws and the upper cover pressing the welding rod will overlap with the outside positive and negative during construction and operation The iron collides with fire and burns, and the jaws will be damaged and deformed. Since the welding rod can be placed in the front, left, and right sides of the jaws, when the welding rod is put into the jaws, the upper part of the base and the lower part of the upper cover will contact the welding rod. The base and the upper cover cannot be touched, so that the welding tongs and the welding rod will have poor contact, which will cause the welding tongs to generate high temperature, making it impossible to take out the welding tongs, and the welding rod will pass through, and the protective layer on the welding rod will be directly Scratched off, so that the direct part of the electrode can not be used, directly causing losses

[0009] (4) Most of the existing electric welding tongs are designed as hand-pressed handles, which make the jaws open to exchange for welding rods by pressing the handles. Hand-pressed handles will cause obstacles in construction and use, such as when constructing and welding the inside of the steel cage of the building foundation , the electric welding pliers need to be inserted into the reinforcement cage for welding and reinforcement, and the hand-pressed handle will be blocked by the main steel bar and buckle steel bar, so it is difficult for the electric welding pliers to extend into the steel cage for welding construction; It is easy to collide and break during construction, use and movement, so that the jaws cannot be opened to exchange welding rods, making the welding tongs unusable

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