How to extend the mold service life of the rotary tablet press? How about the future of rotary tablet press?

The molds vary with the models of rotary tablet presses, with different application scopes, but they usually encounter the same problem of splitting.

So why will the molds of the rotary tablet press split?

The root cause is that there is too much fine powder in the particles. When compressed, there is air in the particles. If the compression speed is faster, the gap between the plunger and the mold hole will be smaller. When compressed, the air is not kept out of the particles, but enclosed in the tablet. When there is no pressure, the air will expand, making the tablet broken.

Normally, when using the molds of the rotary tablet press, it is important to maintain its components. Some components should be lubricated in order to extend the operating hours and service life of the molds.

1. Clean the tableting chamber in time. After the molds work continuously for several hours, the cavity of the tablet press will be filled with fine powder of materials. These fine powders adhere to the plunger, the plunger hole and the intermediate mold hole, which will cause mechanical failures such as plunger blocking, inflexible plunger rotation, noise, even unstable weight of tablets, plunger breakage, and feeder breakage. Therefore, the tableting chamber should be cleaned regularly during work, and it is recommended to clean it at least once per shift.

2. Regularly inspect and maintain workpieces that are wearable. Guide rails, rollers, rotary tablet press molds, and other wearable parts should be inspected or lubricated in time, and the device should be preventively maintained.

3. Purchase the spare parts. For stamping mold, intermediate mold top screw, bridging plate, feeder, guide rail assembly, upper and lower pressure rollers, shaft, and other parts, a certain number of spare parts should be purchased according to production conditions for emergency use.

At present, the component maintenance frequency should be increased during the tablet press maintenance. Pay attention to the mold maintenance of the rotary tablet press. In some parts, lubrication can help the tablet press to extend its working hours and service life.

Rotary tablet press was produced early in foreign countries, but has been developed only for a few decades in China, so there is still a certain gap with advanced countries. However, with the scientific-technical progress in recent years, rotary tablet press has been used widely.

The speed, material filling depth and tablet thickness of the rotary tablet press can be adjusted. The mechanical buffer device on the machine can prevent against mechanical damage caused by overload. The machine is equipped with a powder suction box. The dust generated during machine rotation can be sucked away by a suction nozzle to avoid sticking and blocking. The raw materials can be recycled.

The rotary tablet press is mainly composed of three parts: upper plunger, middle plunger and lower plunger. A number of plungers (5/7/9 plungers for small press or 15/17/19 plungers for large press) are evenly arranged around the edge of the rotary table, and the ends of the upper and lower plungers are embedded in the fixed curved guide rail. When the rotary table rotates, the upper and lower plungers move up and down with the curved guide rail to achieve the purpose of tableting.

The rotary tablet press is made of stainless steel, equipped with A national standard motor, and in line with GMP standard. This machine is a fully automatic tablet press. The tableting thickness, pressure and speed can be adjusted according to actual conditions, achieving electro-mechanical integrated operation. It is designed with touch buttons and a display screen to show the speed, output and fault. The speed is under stepless control and can be adjusted at will. It is applicable to pharmaceutical factories, chemical plants, daily chemical plants, laboratories, etc. It can produce tablets in round, irregular and other shapes.

At present, the technical development of tablet press in foreign countries is aimed principally at intelligence, flexibility, and compliance with CGMP. The foreign tablet presses are widely enabled by automation technology integrating machine, gas, liquid, light and magnet, numerical control technology, sensor technology, and new material technology. In the coming future, we will gradually develop more high-tech and intelligent rotary tablet presses.