With the large-scale application of central air-conditioning, the demand for pipes for heating and ventilation has also increased. The so-called air duct is a pipe system used for air transportation and distribution, which is widely used in commercial public places such as supermarkets, shopping malls, exhibitions, theaters, etc. The air duct production line is composed of a feeding rack, a leveling and beading machine, a cutting edge and square cutting hydraulic angle shearing machine, a hydraulic shearing machine, and a hydraulic folding machine.

1. Process requirements of the automatic PLC control system of the air duct production line:

Each duct needs to be bent 3 times, hits the large square mold 2 times, hits the small square mold 3 times, and cuts 1 time. There are a total of nine actions. When each action is executed, the servo must stop. After the action is completed, the servo must Automatically start, the distance the servo drives is different each time. The distance traveled at each step and the action after stopping should be determined according to the size of the set air duct. According to the calculation, the action of small square mold and bending is a certain rule For crossed pipes, there are different ways of crossing pipes of different sizes. For example, when making relatively small pipes, all three small square molds are laid, and there is no bending action. Some pipes are made with two square molds, one bend underneath, another small square mold is made, and two more bends.

2. The design idea of the automatic PLC control system of the air duct production line

To make a complete duct requires 9 mechanical actions, and the servo will automatically start and stop 8 times. The distance traveled each time depends on the width and height of the pipe. But the number of mechanical actions is fixed. We can calculate the total distance traveled by the servo and divide it into 8 segments. After calculation, there are 3 distances from the origin for the small square mold. The different settings can be calculated by formulas. 3 distances, these 3 distances correspond to the action of playing small square molds. In this way, find out the corresponding length of these nine actions, and then determine their corresponding actions.

Three, the operation effect of the automatic PLC control system of the air duct production line

It can be seen from the operation of the system that the production accuracy and stability of the air duct production line have been significantly improved. In the case of automatic material opening, any length of auxiliary material is opened. When the set quantity is produced, the air duct machine automatically stops.

Foshan Shengya Automatic Equipment Technology Co., Ltd. is a professional design + production + sales of automatic industrial intelligent manipulator equipment, metal cold-rolled forming processing machinery, ceiling wall panel building materials and ventilation processing equipment, non-standard customized sheet metal mechanical and electrical equipment and other products. Professional service company.