Welding wheel mounting mechanism of narrow lap seam welder

Abstract

The invention discloses a welding wheel mounting mechanism of a narrow lap seam welder. The mechanism comprises a mandrel and a welding wheel body which is installed on the mandrel; the wheel body isprovided with a central shaft hole, and a plurality of fixed thread holes are distributed in the circumferential direction of the disk surface of the welding wheel body; the mandrel comprises a shafthead and a mounting flange surface, and a plurality of fixing holes are equally distributed in a circumferential direction of the mounting flange surface; an insert is mounted in the fixing hole, andthe inner wall of the fixing hole is provided with trapezoidal threads, the outer wall of the insert is provided with matched trapezoidal threads, and the inner wall of the insert is provided with toothed threads; the welding wheel body is mounted on the shaft head of the mandrel, and is screwed into the insert through the fixing threaded holes by bolts, so as to achieve the bonding and fixing ofthe welding wheel body and the positioned mounting flange surface.

Description

technical field [0001] The patent of the present invention relates to a welding wheel installation mechanism, in particular to a welding wheel installation mechanism on a narrow lap seam welding machine. Background technique [0002] Seam welding machine is a kind of machine which laps or butts the welding objects, pressurizes and drives the rotation through the electrode wheel, and continuously or intermittently sends electricity to realize welding. Seam welding machines are widely used in the manufacture of joints that require tightness, and are sometimes used to weld ordinary non-sealed sheet metal parts. Usually, in the seam welding of metal sheet metal parts, narrow laps are used. [0003] The seam welding wheel is the electrode wheel of the seam welding machine. When welding, the upper and lower seam welding wheels clamp the workpiece to be welded, and release positive and negative currents respectively through the workpiece to be welded, so that the workpiece to be we...

AI Technical Summary

Problems solved by technology

Therefore, the performance of the welding wheel has a great influence on the welding quality of the entire welding seam machine, especially on the narrow lap welding seam machine, considering that the welding seam is relatively narrow, the thickness of the welding wheel is also relatively low. For the electrification of the process, copper with good conductivity will be used as the material of the welding pad and the mandrel. However, due to the low hardness of copper, when the welding wheel is rotating and welding, the upper and lower pressures will cause the threaded hole where the welding wheel and the mandrel are fixed. The thread is broken, which will cause the mandrel and welding wheel to be damaged and cannot be used, thus increasing the maintenance cost of the enterprise

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