The Continuous automatic feeding system adopts PLC control technology and measurement and weighing technology, which can realize raw materials information entry, formulation work order creation and management, batching accuracy control, real-time collection, display and storage of batching data information, and control the weight and flow of materials loaded to the weighing platform through the human configuration monitoring system and PLC program. To achieve accurate metering and dosing. As a dynamic continuous measurement and batching automatic control device, it can provide accurate measurement data and control means for the production control and management of various industrial sites.
020-34563445The continuous automatic feeding system is divided into material storage, batching, metering system and electrical control system. Among them, the control system has two operation modes: automatic and manual. It is simple to operate and flexible to control, which can meet various production needs and has extremely high practicality. It can be adapted to the batching and stirring control of powder, granules, liquids and other materials. The weight of the materials loaded onto the weighing platform is controlled through the PLC program. The raw silicone rubber, inorganic fillers, structured control agents, etc. are first mixed at 100 to 200 ℃ by a high-speed stirrer to form a freely flowing granular mixture. The process of continuously feeding it into a twin-screw mixing extruder or a multi-stage shearing single-screw mixing extruder, where it undergoes mixing and heat treatment under high shear force and continuously formulates silicone rubber compounds, can achieve efficient batch production.
The automatic feeding system adopts an intermittent preparation process to prepare and mix silicone rubber, which is mostly carried out in kneaders and batching machines. In industrial production, for the mass production of mixed silicone rubber, large kneaders equipped with two mixing paddles are often used, and the capacity of the kneader can reach several cubic meters. To ensure uniform mixing of raw materials, a longer mixing time is required. The batching machine equipped with two propellers in the tank and a pressure block at the top, which enables the raw materials to be mixed in a compressed state, can produce uniformly mixed silicone rubber in a relatively short time. However, the effective volume of this pressurized batching machine is only a few hundred liters at most, which cannot meet the requirements of large-scale production. The method of first mixing in the batching machine and then heat-treating in the kneading machine can be adopted to efficiently and in large quantities produce mixed silicone rubber compounds. That is, first, raw silicone rubber, reinforcing filler silica, structured control agent, etc. are mixed evenly in a batching machine at 150℃, and then processed in a nitrogen protection or reduced pressure kneader at 150 to 200℃.
