Tablet press common problems and solutions inventory

The tablet press makes the tablets smaller, more delicate and more aesthetically pleasing, which is convenient for patients to take. It is a common instrument in the pharmaceutical industry, so it has an unshakable position in the pharmaceutical industry. There is no better alternative. Tablet press manufacturers——Shanghai Lvyi Machinery Co., Ltd. is a professional enterprise integrating R&D, production and sales. It is understood that before using the traditional tablet press, all the oil cups, oil holes and friction surfaces must be lubricated, and run empty to make each friction surface covered with oil film before it can be put into use. And refuel on time for each shift, but do not refuel too much each time, so as not to overflow and affect cleaning and contaminate the tablets. This is the most common mode of use of tablet presses in the market at present. Through a large number of market research and data collection, Shanghai Lvyi Machinery Co., Ltd. produces the main working components of the tablet press machine. Usually, a pair of punches includes upper punches, middle dies, There are three parts of the lower punch, the structures of the upper and lower punches are similar, and the diameters of the punches are also equal. Gaps where powder can leak. The transmission part of the tablet press is composed of a motor, a synchronous pulley, a worm gear reducer, and a test handwheel. The motor is installed on the motor seat of the bottom plate. After the motor is started, the power is transmitted to the reduction worm gear pair through a pair of synchronous belts. The electric speed is adjusted by AC frequency conversion stepless speed regulation. Open the sides or the rear door to directly observe and access these parts. According to the shape of the die structure, it can be divided into circular and special-shaped (including polygonal and curved). The shape of the end surface of the punch is flat, hypotenuse, shallow concave, deep concave and comprehensive, etc. The flat and hypotenuse punches are used to press flat cylindrical tablets, and the shallow concave is used for pressing The biconvex tablet, the deep concave shape is mainly used to compress the core of the coated tablet, and the composite shape is mainly used to compress the special-shaped tablet. In order to facilitate the identification and taking of medicines, the name of the medicine, dosage and vertical and horizontal lines can also be engraved on the end face of the die. To compress tablets of different doses, dies of suitable size should be selected. To adjust the filling depth of the tablet press (that is, to adjust the weight of the tablet), loosen the butterfly screw and loosen the gear platen. Turn the lower adjustment gear to the left to raise the lower punch rod, and the filling depth will decrease (the weight of the tablet will be reduced). After the adjustment is completed, still press the tooth pressure plate and tighten the butterfly screw. To adjust the pressure (that is, to adjust the hardness of the tablet), loosen the locking nut of the connecting rod, turn the upper punch rod, and turn to the left to move the upper punch rod downward, then the pressure will increase and the hardness of the extruded tablet will increase; on the contrary, Turning to the right will reduce the pressure and the hardness of the tablet. After adjustment, use a wrench to clamp the hexagon at the lower part of the upper punch rod, and still lock the locking nut of the connecting rod. At this point, the adjustment of the punching die of the tablet press is basically completed, and then start the motor to test the pressure of more than ten tablets, check the tablet weight, hardness and surface finish, and if the quality is qualified, it can be put into production. During the production process, the quality of the tablets must still be checked at any time and adjusted in time. The single-punch tablet press uses a cam (or eccentric wheel) linkage mechanism (similar to the working principle of a punch press) to make the upper and lower punches generate relative motion to compress the tablets. The single-punch type does not necessarily have only one pair of dies to work, and there can also be two or more sets of dies. However, multiple sets of dies are stamped at the same time, which leads to strict requirements on the stability and reliability of the mechanism and complex structure, so it is rarely used. The single-punch tablet press is intermittent production, intermittent feeding, intermittent tablet output, low production efficiency, suitable for pharma machinery and large-size tablet production

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