Name: Liaoning Super Group Construction Group Co., Ltd.
Super group hardware accessories store：
Doors and windows, stretch bending and pressboard workshop：
Address: middle section of South outer ring of Dashiqiao
Aluminum plastic composite doors and windows need to be stretched and bent during the production process. According to the technological characteristics, stretch bending can be divided into top bending, bending, rolling bending and bending.
Bending is the most commonly used bending method. Most of the equipment used is general mechanical press or hydraulic press, and it also has special bending press. The common roll bending equipment is bending machine. The three roll bending machine determines the principle of one circle according to three points, and carries out continuous bending of the slab. The three roll bending machine has two drive rollers (fixed) and one down roll (adjustable). The relative distance between the roller and the driving roller can be changed by adjusting the upper and lower positions of the down roll. When stretching and bending, the sheet metal is placed between the driving roll and the pressing roll, and the driving roll is rotated alternately in the positive and negative directions, thus making the sheet metal reciprocating motion. By adjusting the screwdown roll to gradually press down, the sheet can be bent into cylindrical, conical and hyperboloid surfaces with required curvature. One end of the down roll can be raised to facilitate unloading. In addition, there are four-roll and multi-roll plate rolling machine, four-roll plate rolling machine is used for rolling thick plate cylinder, more than four-roll multi-roll plate rolling machine, with many pairs of rollers will gradually bend the plate into a complex surface.
For bending parts with higher precision, larger length and radius of curvature and smaller transverse dimension, it can be stretched and bent on special stretching and bending machine. In tension and bending, the whole thickness of the plate is affected by tensile stress, so only elongation deformation occurs. After unloading, the deformation caused by elasticity is small, and the accuracy is easy to ensure.