Operating principle and skill requirements of wall thickness control system for blow molding machine

    blow molding machine,blow molding machine, blow molding machine, Zhangjiagang wall thickness control system using closed-loop response description, its components include wall thickness control, electric hydraulic servo valve and its measure and as the electronic ruler signal reaction equipment. The user to set the parison wall thickness control device of the panel thickness in the axial wall change curve, voltage controller based on the curve of output size may change current signal to the electro-hydraulic servo valve, the electric bottle blowing machine, film blowing machine, plastic machine, plastic packing machine, bag making machine hydraulic servo valve to drive the performance of the core control organization move up and down, and then forming die gap change. After measuring the size of the gap, the electronic ruler can draw the corresponding voltage signal to the wall thickness controller. This constitutes a closed-loop wall thickness control system for blow molding machines.

Analysis of skill requirement for wall thickness control system of blow molding machine

The wall thickness control system of blow molding machine is a system to control the opening and closing of the gap of mould core, that is azimuth servo system. In the hollow container production process, in order to ensure the quality of products, the demand quantity can be accurately controlled stalking settings, together with demand response process as much as possible quickly. The 10 wall thickness controller briefly as an example, in the form of a series of extrusion die extrusion, from a parison the short time of about 5S, to complete the function curve of a finite length in the 5S period, the demand will be divided into 10 stages, each stage in the time axis, as long as about 0.5s times, in accordance with the stalking theory, wall thickness control device of the unit pulse time of transition should be stage moments of 1/5 ~ 1/10, 0.05 ~ 0.1s, which echoes the demand system is very agile. In the echo so quick together, but also to ensure that the amount of the range can be accurately controlled stalking settings, otherwise, will lose the meaning of wall thickness control. In order to reach the control function of these two requirements, it is difficult to describe the wall thickness control system of blow molding machine in heavy load system. In addition, since the l0 curve is used to describe the curve in the parison generalization curve, the interpolation between the point and the point must be carried out, and the generalized curve lubrication should be done as much as possible.