Automatic adjusting machine for projection welding nut

Abstract

The invention discloses an automatic adjusting machine for a projection welding nut, which comprises a nut screening and adjusting device and a machine body motion driving device, wherein the nut screening and adjusting device consists of an adjusting disk, a height limiting block, a first-stage screening and limiting block and a second-stage screening and limiting block; the adjusting disk is a disk which is internally provided with a spirally-raising channel; the spirally-raising channel of the adjusting disk is outwards arranged from the center of the disk; the height limiting block is a wedged block and is fixedly arranged on the bottom surface of the spirally-raising channel; the first-stage screening and limiting block consists of a lug boss arranged on the bottom surface of the spirally-raising channel and a stop block arranged on the side wall of the spirally-raising channel; the structure of the second-stage screening and limiting block is the same as that of the first-stage screening and limiting block; and the height limiting block, the first-stage screening and limiting block and the second-stage screening and limiting block are sequentially arranged along the spirally-raising channel. According to the automatic adjusting machine, the spirally-raising channel of the adjusting disk, a limiting device and a pneumatic control device are arranged to realize the automatic operation of the adjusting and the conveying of the projection welding nut; and the automatic adjusting machine is suitable for adjusting operations of various projection welding nuts.

Description

technical field [0001] The invention relates to an automatic straightening device for nuts, which is especially suitable for screening the placement state of projection welding nuts before welding, and belongs to the technical field of automobiles. Background technique [0002] Projection welding is a resistance welding process in which several bumps are pre-processed on the joint surface of the welding workpiece to make it contact with the surface of another weldment, pressurized and heated by electricity, and the bumps are crushed to form solder joints. There are generally 3-4 bumps on the welding surface of the projection welding nut. When welding, it must be ensured that the surface with bumps fits the workpiece. Therefore, the alignment of the nut before welding is an indispensable process in the welding operation. At present, there are mainly two ways to align the projection welding nuts. One is manual alignment. The operator uses tweezers to pick up and turn the nuts ...

AI Technical Summary

Problems solved by technology

At present, there are mainly two ways to align the projection welding nuts. One is manual alignment. The operator uses tweezers to pick up and turn the nuts to align them, which has the disadvantages of frequent operations and low labor efficiency; the second is electronically controlled nut alignment. The machine is placed in the right position, although the manual and cumbersome operation process is reduced, but due to the high cost of the equipment, the need for an external power supply, and strict requirements on the working environment, it is not suitable for widespread use

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