A positioning device for a welded tank body

Abstract

A positioning device for a welded tank body, including a base fixed to the ground, a roller mechanism installed on the base to support the tank body, a roller driving mechanism that drives the rollers of the roller mechanism to rotate to drive the tank body to rotate, clamping from left and right directions The left end surface clamping mechanism of the tank body and the right end surface clamping mechanism of the tank body hold the tank body; the left end surface clamping mechanism of the tank body includes a left support frame fixed to the base or movable left and right relative to the base, and a cylinder installed on the left support frame , The flexible suction cup installed at the end of the piston rod of the cylinder to clamp the tank body; the advantages are high welding precision, beautiful weld seam, and not easy to damage the appearance of the tank body at the clamping position of the end surface, the tank body is beautiful, and the quality of the weld seam and the tank body are improved. The qualification rate of the tank body is high, so that the dimensional accuracy, row position tolerance and welding quality of the tank body can meet the high-quality requirements.

Description

technical field [0001] The invention relates to a positioning device for a welded tank body, in particular to a welding device for welding a tank body when the welded seam is in a straight line or a three-dimensional curved circular seam, and the end surface of the tank body is a curved surface and the side surface of the tank body is a cylindrical surface. Positioning means. Background technique [0002] For tank welding, especially for tanks that need to withstand a certain pressure, the process requirements are stricter. It is required that the dimensional accuracy, row position tolerance and welding quality of a single tank must meet certain quality requirements. Therefore, welding such tanks requires There are certain technological equipment to ensure the welding quality. When the welded seam is in a straight line, whether the weld seam can be kept on the same straight line, the key factor is whether the tank body positioning device can fix the tank body without any di...

AI Technical Summary

Problems solved by technology

The utility model fixes the tank body through clamps. Although the fixation is reliable, it has the following disadvantages: one is that the clamp structure is complicated, which makes the cost of the positioning device for welding the tank high; It is installed in the jig. On the one hand, the jig needs to bear a heavy weight. On the other hand, the opening angle of the jig must be large, which further increases the equipment cost; third, because the jig needs to clamp a part of the tank, This will cause the part clamped by the fixture to be unable to be welded, so the scope of use is limited

In this invention patent, although the positioner clamps the tank body from the left and right directions, when the end surface of the tank body is a curved surface, since the positioner is in point contact with the tank body in the left and right directions of the tank body, and The clamping force needs to overcome the gravity of the tank body, so the positioner cannot truly clamp the tank body. During welding, the tank body is subjected to the external force generated during welding, its own gravity and rotation, and the tank body is in the process of welding. Automatic offset occurs, affecting the welding quality of the weld

Images