For normal insulating glass production line, because the pressing part usually adopts hydraulic pressure, down positioning and side positioning adopts cylinder. Optoelectronic switch recognize not sensitively, route is misplacement and pressure is too big, so it's out of control, and make the glass fragile when pressing.To slove this problem, you need to adjust positioning system, and choosing high quality Optoelectronic switch.

　　Parker Machines' pressing part and all line adopts servo motor to control, and ball screw to drive, positioning is high precision, pressing route is set by servo sysytem, it avoids the bigger pressure and out of limit problem.