Welding roller adjusting device of welded pipe production line

Abstract

The invention relates to a welding roller adjusting device of a welded pipe production line. A screw rod rotates to drive welding dies on two welding mechanisms to be close to or away from each otherin the horizontal direction; an adjusting shaft rotates to drive the welding dies on the welding mechanisms to move up and down in the vertical direction, so that the three-dimensional adjustment of the welding dies is achieved, and the welding dies can adapt to wider welded pipe production specifications; in addition, the screw rod and the adjusting shaft extend outside so as to be convenient toadjust; and cooling channels communicating with a water pipe are arranged in fixing discs for arranging the welding dies, the welding dies can be cooled at a certain degree, so that the temperature ofthe welding dies is prevented from being too high, the service life is prolonged, and heat is isolated from being transmitted to other components.

Description

technical field [0001] The invention relates to the field of welded pipe production, in particular to a welding roller adjustment device for a welded pipe production line. Background technique [0002] Welded pipes have a wide range of applications in the industrial field. At present, the production method of welded pipe is mostly: the steel plate is gradually formed by cold bending machine and welded, but in the production process, it often needs to be rolled through several, dozens, or even dozens of molds before it can be formed. [0003] However, in the actual production process, the conventional production line has poor adjustability. When producing welded pipes of different specifications, the replacement of the mold needs to stop production, and the operation is relatively cumbersome. Moreover, due to the large number of molds, it greatly increases the need for mold replacement. More importantly, because the molds before and after the replacement are different, the p...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual production process, the conventional production line has poor adjustability. When producing welded pipes of different specifications, the replacement of the mold needs to stop production, and the operation is relatively cumbersome. Moreover, due to the large number of molds, it greatly increases the need for mold replacement. More importantly, because the molds before and after the replacement are different, the positions of the molds need to be adjusted one by one during the installation process

This replacement method takes a long time, is labor-intensive, and requires high skill requirements for operators. Especially in the case of tight construction schedules and high frequency of product specification replacement, its shortcomings are more fully exposed, which has a great impact on manufacturing.

Especially near the welding position, it is necessary to adjust the position of the mold in real time according to the welding condition of the welded pipe through trial welding, but because the existing mold can only be adjusted horizontally, it does not have the function of vertical adjustment

Moreover, the temperature near the welding point is high, and the metal has good thermal conductivity. After working for a long time, the temperature of the mold near the welding point is too high, which will accelerate the aging of the mold and affect the forming and welding quality of the welded pipe.

[0004] Furthermore, since the welded pipe is directly welded in the air and directly in contact with the air, the welding quality is unstable. In order to ensure the welding quality, the shielding gas is usually sprayed at the welding point to isolate the air, but in this way, the amount of shielding gas sprayed is too large less, the air cannot be completely isolated, and the ideal welding effect cannot be achieved, the amount of shielding gas sprayed is too large, the cost is too high, and the excess shielding gas causes waste

For this reason, our company has developed a welding protection box, which seals the space near the welding point and fills it with protective gas to ensure that the welding point is completely isolated from the air. However, this protective box does not match the existing mold. Difficult to adjust inside the case

Images