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November 24, 2020
How to debug the tablet press? Three simple tutorials are worth reference
The tablet press is a kind of machine which puts the particles or powder materials in the mold hole and presses them into tablets by punch. It is especially suitable for small batch production. It is characterized by adjustable speed, filling depth of materials, sheet shape thickness and mechanical buffer installed on the machine, which can avoid dust generated during operation, prevent sticking and blocking, and recycle raw materials for reuse. At present, with the promotion of a series of pharmaceutical reform policies and the continuous development of China's pharmaceutical industry, the demand and requirements for tablet press equipment are also increasing, tablet press equipment enterprises usher in a good opportunity.
It is understood that in addition to the traditional single tablet press, the rotary tablet press is favored by the market for its good tablet pressing effect and high uniformity of tablet density, which can automatically identify and eliminate quality problems such as missing corners and loose pieces, and effectively reduce the cracking phenomenon. Besides, the machine has low vibration, low noise, low energy consumption, high efficiency and accurate tablet weight, so it is favored by the market Health products, food and other industries are widely used.
The industry pointed out that in order to meet the requirements of storage, transportation, preservation and disintegration time limit, there are corresponding requirements for the pressure of a certain dose during tablet compression, otherwise the actual thickness and appearance of the tablets will be affected. Therefore, the pressure regulation is essential. Users in the use of tablet press, generally need to debug the equipment, there are three specific tutorials.
1. Adjustment of film output
In this method, first turn the hand wheel to make the lower punch surface rise to the position, and observe whether the lower punch surface is in line with the middle die plane. If not, loosen the butterfly screw, loosen the gear pressure plate and transfer the upper adjusting gear to make the lower punch surface and the middle die plane in line, and then press the pressure plate up and tighten the butterfly screw.
After completion, the user can manually shake the hand wheel and run for more than ten revolutions without load. If the tablet press runs normally, it can add material for pressure test and make the next adjustment.
2. Adjustment of filling depth
According to the industry, the adjustment of filling depth is the adjustment of tablet weight. The method is: first, loosen the butterfly screw and loosen the gear pressure plate. When the lower adjusting gear is turned to the left to make the lower core punch rise, the filling depth will be reduced (the weight of tablets will be reduced). After adjustment, press the gear pressing plate on and tighten the butterfly screw.
3. Pressure adjustment
The adjustment of pressure is the adjustment of tablet hardness. First, loosen the locking nut of the connecting rod and rotate the upper core punch rod. Turning to the left makes the upper punch rod move downward, the pressure increases and the hardness of the pressed tablet increases; on the contrary, turning to the right reduces the pressure and reduces the hardness of the tablet. After adjustment, use a wrench to clamp the hexagon at the lower part of the upper punch core rod, and then lock the connecting rod lock nut.
After the adjustment of the die is basically completed, the tablet press is started to test the weight, hardness and surface finish of more than ten tablets. If the quality is qualified, the material can be put into production. In the production process, it is still necessary to check the quality of tablets at any time and adjust them in time.
In addition, in order to make the tablet press better and stable operation, users also need to pay attention to the maintenance of the tablet press. For example, pay attention to the lubrication of the friction surfaces of moving parts. Before use, all oil cups, oil holes and friction surfaces must be added with lubricating oil, and then they can be put into use after running empty so that all friction surfaces are covered with oil film; regularly check whether the screws are loose, and also pay attention to the inspection during the working process, if there is looseness, tighten it immediately to avoid failure.