During the demolding process of fire chemical products and solid propellants, there is a possibility of explosion when the core mold separates from the explosive body at the moment. The cylinder and the cylinder base are connected by a pin, allowing the piston rod of the cylinder to only move up and down along the axial direction. A weighing module is installed at the bottom of the cylinder. When the piston rod of the cylinder rises and contacts the core mold and pushes the core mold at the same time, the weighing sensor transmits the pressure change signal generated by the counterforce of the cylinder to the PLC, achieving real-time monitoring of the working pressure value, and setting overpressure alarm and emergency stop protection functions for the working pressure value.
020-34563445The demolding and weighing module is mainly composed of a demolding machine (including lifting cylinder, cylinder base, working platform, connecting column, base), weighing sensor, hydraulic system, monitoring and control system, etc. The demolding and Weighing system fixes the engine that has been cured vertically on the working platform of the demolding system using a locking device. After manually removing the bottom nut of the core mold, personnel evacuate the demolding site. Then, remote operation is carried out in the control room. By raising the piston rod of the demolding system's lifting cylinder, the core mold of the engine is pushed upward to achieve the pre-relaxation effect of the core mold. Then, the core mold is manually removed. The piston rod of the cylinder rises in two stages: a rapid movement and a slow movement. During the process from the initial position of the piston rod to approaching the core mold, the piston rod moves rapidly towards the core mold at a speed of 0.8 m/min. The explosion-proof photoelectric sensor installed at the bottom of the platform detects the position of the piston rod in real time. When the piston rod approaches the core mold, the movement speed of the piston rod is reduced to 0.1 m/min. The core mold fixture installed at the top of the piston rod slowly approaches and pushes the engine core mold, causing a small displacement of the core mold and the drug body at a lower speed, achieving the pre-relaxation of the core mold.
The weighing module is connected between the cylinder and the cylinder base by a guide pin, allowing the piston rod of the cylinder to only move up and down along the axial direction. A weighing sensor is installed at the bottom of the cylinder. When the piston rod of the cylinder rises and contacts the core mold and pushes the core mold at the same time, the weighing sensor transmits the pressure change signal generated by the reaction force of the cylinder to the PLC, achieving real-time monitoring of the working pressure value and setting overpressure alarm and emergency stop protection functions.
