The invention provides an on line
control system of the wall thickness of an
extrusion blowing molding product based on the image indication technology. The invention comprises a parison wall thickness on line detecting module, an
engineering control
processing module, and a die orifice gap controlling module, wherein the parison wall thickness on line detecting module is connected with the
engineering control
processing module, and the
engineering control
processing module is connected with the die orifice gap controlling module. The invention also provides an on line control method of the wall thickness of the
extrusion blowing product, which comprises the following steps that: the distribution of the object parison wall thickness is achieved through debugging; the distribution information of the parison wall thickness is obtained on line; the die orifice gap curve of a head is corrected on line by adopting the fuzzy
iterative learning control algorithm to ensure the wall thickness distribution of the final product to meet the requirement. The on line
control system has the advantages that the
system is stable, the operation is simple, the realization is easy, the cost is lower, the adjustment control can be detected and fed back in real time, the product performance is enhanced, the
material consumption is reduced, and the product performance is ensured, the
system can be conveniently applied to the
technical innovation of prior blowing molding equipment, and the performance and the qualification rate of the blowing molding product can be remarkably enhanced.