Adjustable Adaptive Stud Welding Gun

Abstract

The invention discloses an adjustable self-adapting stud welding gun. According to the adjustable self-adapting stud welding gun, a main shaft body, a moving iron core, a fixed sleeve and a static iron core are arranged in a cavity of a welding gun shell, the main shaft body is movably arranged in a shaft sleeve, which is fixedly arranged in the cavity, in a penetrating manner and is connected with an integrated clamping head seat, the moving iron core is inserted from the front end of the fixed sleeve, the static iron core is inserted from the tail end of the fixed sleeve, a lifting clearance is reserved between the moving iron core and the static iron core, a reset structure is arranged in the welding gun shell, a driving shaft which is electrically insulated with the main shaft body is arranged at the tail end of the main shaft body, and a self-adapting structure is arranged between the main shaft body and the driving shaft; a connecting hole matched with the driving shaft is arranged at the front end of the moving iron core, the driving shaft is inserted into the connecting hole, an adjusting gap is formed between the main shaft body and the moving iron core, and a locking structure is arranged between the driving shaft and the moving iron core; an adjusting mechanism is arranged between the static iron core and the moving iron core. The adjustable self-adapting stud welding gun has the advantages that the structure is simple, the axial motion of the main shaft body is flexible and reliable, and the lifting clearance can be kept invariable.

Description

technical field [0001] The invention relates to a stud welding torch, in particular to an adjustable self-adaptive stud welding torch. Background technique [0002] The current common stud welding gun has a structure: a welding torch housing with a cavity, in which a main shaft body, a moving iron core, a fixed sleeve with a coil inside and a static The iron core is also provided with a control circuit device for supplying working current to the main shaft body and the coil in the welding torch housing. The linear bearing can slide axially in the linear bearing; the main shaft body is sleeved with a return spring that can reset the main shaft body after arc ignition, and the two ends of the return spring are respectively against the outer flange of the main shaft body and the fixed Between the sleeves, the front end of the main shaft body is connected with the integrated chuck seat for installing the stud, the tail end of the moving iron core is inserted from the front end ...

AI Technical Summary

Problems solved by technology

[0003] The main disadvantages of the stud welding torch with the above structure are: (1) Since the linear bearing is easy to wear, the gap between the linear bearing and the main shaft body will increase with the increase of use time, making it easy to cause weld deviation during welding. arc phenomenon, and when the main shaft body slips in the worn linear bearing, it is easy to form a groove on the surface of the main shaft body, and in serious cases, the main shaft body and the linear bearing will be stuck; During use, due to factors such as machining errors, installation errors, and thermal deformation of the torch shell, the concentricity of the shaft sleeve and the fixed sleeve will not be high, which will cause the main shaft body and the moving iron core to be fixedly connected head to tail. The resistance increases during axial movement, which greatly increases the amount of wear between the main shaft body and the shaft sleeve, as well as between the moving iron core and the fixed sleeve. In severe cases, the moving iron core will be stuck in the fixed sleeve or the moving iron core cannot be inserted into the In the fixed sleeve, the axial movement of the spindle body cannot be realized, resulting in the failure of the welding work; (3) Before starting the welding work, put the stud into the integrated chuck seat after the aluminum sleeve is set on the head of the welding torch, Then point the welding torch head down so that the front end of the aluminum sleeve is pressed against the plate. At this time, the front end of the stud is also pressed against the plate. Since the main shaft body and the moving iron core are fixedly connected, the stud cannot be fixed during processing. There will be machining errors to avoid. When the actual length of the stud is slightly longer, the stud will compress the spring through the main shaft body and slide towards the tail end, so that the lifting gap between the moving iron core and the static iron core will become smaller, so that the welding arc will start When the arc striking distance is shortened, it is prone to the phenomenon that the arc cannot be struck, which greatly reduces the qualified rate of welding, and the welding efficiency is relatively low.

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