Tableting machine, also known as coated tablets, is the method of tableting the outer layer of the tablet coating. Generally, the chip releases slowly and the outer layer releases quickly (or controlled release). It is also a slow-release tablet of a two-component drug that is prepared multiple times, and the ingredients are not mixed with each other by compression. The inner layer is called a chip, and the coated chip belongs to a release tablet, which can avoid light, control oxidation, and control the drug release rate of each component. So...laboratory tablet press: What are the advantages of analytical tablet presses?

What are the advantages of analytical tablet presses?

1. The laboratory tablet press machine is driven by a motor and the turntable rotates. When the turntable drives 20 pairs of stamping dies to rotate, the turntable with gears also drives the coring disc to rotate, the upper and lower punches move up and down along the bending guide to complete the filling and tabletting, and the corer moves to complete the coring. Here, the outer layer is filled, cored and refilled to complete the pressing of the clad chip. Among them, the upper pressure wheel can adjust the depth of the upper die by moving up and down, thereby controlling the thickness of the pressing process; the up and down movement trajectory is equivalent to a cylindrical cam, which determines the up and down movement trajectory on the circumference.

2. The powder suction device is composed of a powder suction nozzle, a damping pin, a spring and an adjusting screw. The powder suction nozzle is fixed on the frame, and its powder suction port is aligned with the pitch circle of the core plate, but the position of the powder suction port is not adjustable, which meets the requirements of film suction. In the front through hole of the powder suction nozzle, the damping pin is supported by a spring, and the adjusting screw is pressed on the spring, so that the end surface of the damping pin is closely attached to the core plate, which eliminates the gear side generated when the core plate is driven by three sets of gears. The backlash makes the core plate run smoothly and correspondingly improves the qualified rate of the core plate. When the machine is running, the powder suction device can suck out the chips and powder stuck on it with negative pressure, which can prevent the surface of the chip from easily adsorbing the powder in the core plate hole and sticking to the chip. The phenomenon of "sticky core" will lead to an increase in the core loss rate of the chip. In severe cases, the stuck chip will break and the coring process cannot be carried out.

3. The fully enclosed structure is adopted, and the studio is isolated from the outside world, which ensures the cleanliness of the drop core and the pressing area, and will not cause cross-contamination with the outside world.

4. The tableting room of the laboratory tablet press is made of stainless steel, which is easy to clean and maintain, and ensures that the contact part with the drug is clean and free of pollution.

5. Due to the direct contact between the turntable and the powder, the stainless steel surface of the turntable adopts innovative surface treatment technology, and the surface hardness is high, which ensures the corrosion resistance and wear resistance of these surfaces, and correspondingly inhibits the precipitation of insoluble particles.

6. Using a split turntable, the part directly contacting the medicine can be disassembled to ensure reliable cleaning and disinfection of the surface of this part.

7. The quality control of the cladding chip adopts "double multiple" automatic detection and elimination, so that the core content of the cladding chip meets the process requirements.

8. The electrical control of the whole machine adopts PLC controller and variable program control. It has various automatic control functions such as overload shutdown and material shortage shutdown of tablet press. The photoelectric switch and pressure sensor double detection ensure automatic slicing of missing tablets. First, using a photoelectric sensor, when the chip is missing or the position is inaccurate, it will immediately send an abnormal signal; secondly, when the pressure sensor encounters an undervoltage, it will send an abnormal signal. When an abnormal signal occurs in any unit of this double detection, the PLC controller will start the stripping program to complete the stripping action. In order to ensure that the detection can still be completed when the photoelectric sensor fails, two sets of photoelectric sensors are installed to make the core content of the chip meet the requirements. Based on the core plate tablet press, there are many actions and many detection points in the tablet pressing process, requiring accurate speed adjustment and control. The machine is controlled by a pass-frequency motor and a frequency converter.

9. The operation of the machine hand wheel and electrical control are concentrated in the positive direction, easy to operate. The tablet thickness, filling volume, pressure and speed are all controlled by the adjusting handwheel and button, the adjustment range is controlled by a special device, and the adjustment size is displayed by the scale. 9 Pressure adjustment and speed adjustment can only reach their respective values by pressing the function keys on the touch screen. They can be read directly by reading the tachometer and pressure gauge, and the operation control is simple.

The electrical control system of the whole machine is safe, reliable and easy to operate and maintain. The control system has a number of protective measures, the operation panel has visual symbols, and the operation instructions are very intuitive, which is conducive to the troubleshooting of operators and maintenance personnel.

11. The machine can be used as an ordinary tablet press with a slight modification, and can also be used to compress double-layer tablets.