Characteristics of tablet press and its application in pharmaceutical industry

Tablet press is the key equipment in tablet production of pharmaceutical industry, which affects most of the quality and economic indicators (qualification rate, etc.) At present, there are two types of domestic tablet press: single punch press and multi punch rotary tablet press The single punch is mainly driven by the rotation of the rotating wheel to move up and down the punch, and the particles filled into the die hole by the powder feeder are pressed into pieces The main defect is that the impact noise is large (produced by unidirectional pressing of the updraft) and the output is small (about 100 pieces / min) It is only suitable for small batch production and laboratory trial production Multi punch rotary tablet press is widely used in production at present The full-automatic high-speed rotary PLC tablet press detects the punch pressure through the pressure sensor, which is monitored, analyzed and judged by the central control unit CPU, and adjusts the filling depth of the tablet press according to the predetermined control model to realize the automatic control of tablet production of the tablet press At the same time, monitor the die damage of tablet press and the supply of powder, play a role of safety protection, greatly improve the qualified rate of tablets, reduce the production cost, and realize the management of one person and multiple machines The system has the advantages of simple operation, convenient maintenance, stable and reliable operation, high control accuracy and high technology The full-automatic high-speed rotary PLC tablet press adopts the electromechanical integrated servo control system The servo motor is the power source, the output torque and speed accuracy are high, the spindle speed Zui can be up to 100r / min, the output of Zui high-pressure piece can be up to 168kt / h, with the die size and shape, the circular piece with large diameter of 13mm can be pressed out, the irregular piece with large side length of 16mm can be pressed out, the average piece weight control precision is ± 1%, the single piece weight difference; It has all kinds of interlock protection and alarm functions: it has up and down over tight protection function; it has main pressure, pre pressure hydraulic support, adjustable hydraulic pressure and automatic pressure maintaining function; it has automatic lubrication system, adjustable lubrication flow and interval in time, and it has insufficient lubricating oil alarm device; It has the function of automatically controlling the weight of tablets within the error range and eliminating unqualified products; it has the function of overload protection, emergency stop, automatic fault stop alarm, etc.