Automatic material change and reception control method

Abstract

The invention relates to an automatic material change and reception control method. The method comprises the following steps: (1) detecting photoelectricity is respectively arranged on a unwinding / winding roller and a preparation roller near the tail part of a material; when the material cannot shield the detecting photoelectricity, the detecting photoelectricity sends signals to a PLC; and at this time, the PLC starts to count, and the preparation roller performs the preparation; (2) the PLC controls the dropping speed of the unwinding / winding roller, and controls deceleration of the machine operation speed; the deceleration rate of the machine operation speed and the speed dropping rate of the unwinding / winding roller is the same; and when the unwinding / winding roller is reduced to the standard material change speed, the operation is performed by the speed; (3) when the PLC counts to reach a set numerical value, the material change and reception are started, the PLC starts to count, and the preparation roller starts to operate; after the speed rises to reach the standard material change speed, the operation is performed by the speed; and the unwinding / winding roller starts to brake to reach zero speed; and (4) when the PLC counts the numerical value to reach the set numerical value, the speed of the preparation roller and the machine operation speed synchronously rise to reach the set standard operation speed.

Description

technical field [0001] The invention relates to a control method for automatic material change. Background technique [0002] At present, in the production process of sanitary napkins and diapers, production efficiency determines the level of profit, so increasing production speed has become an inevitable choice. Because the high-speed machine is changing the material, the material is easy to be broken, so it is necessary to slow down the material. Moreover, the materials of the production products are diversified, and there are multiple sets of unwinding mechanisms of different materials. Due to the thickness of the material, the material and the length of each product are different, with the continuous improvement of the production speed of the production equipment, the replacement of materials The way of receiving materials puts forward higher requirements. The original method of manually pressing the button to pick up the material is no longer suitable for the current ...

AI Technical Summary

Problems solved by technology

The original method of manually pressing the button to pick up the material is no longer suitable for the current development requirements. The traditional manual way of picking up the material has various problems such as too much remaining material or the material is used up and the button is not pressed to cause the machine to shut down.