The high-speed tablet press adopts frequency conversion technology to replace the mechanical speed regulation of the stepless speed regulation motor
The high-speed tablet press adopts frequency conversion technology to replace the mechanical speed regulation of the stepless speed regulation motor. The advantages of frequency conversion speed regulation are energy saving, reliable control, stable operation and low noise. The inverter itself has many protection functions, such as overvoltage, undervoltage and overcurrent. Output parameters can be used to monitor the actuator in real time. Once an abnormality occurs, the protection function will be activated. The drive will stop the main motor and display a fault code. Point out the cause of the failure to further ensure the safe and reliable operation of the motor.
The high-speed tablet press machine is made of stainless steel with precision machining. The support frame is made of aluminum alloy. The upper and lower parts can be disassembled independently for easy transportation. The studio is sealed with a fully transparent plexiglass cover, which is effective in preventing mosquitoes and dust, clean and beautiful, and the working conditions are clear at a glance. The waste is easy to clean and fully complies with the national GMP production standard. The glass cover is very convenient to remove when removing residual powder and waste.
Working principle and main structure of high-speed tablet press:
1. Turntable structure: The turntable is the main actuator of the machine. The main components are upper and lower bearing parts, main shaft and turntable. The main shaft is supported by bearings, driven by a worm gear, connected by splines, and the main shaft is driven to turn the turntable.
2. Track mechanism: The track has a cylindrical cam and a plane cam composed of an upper guide rail and a lower guide rail, which are the tracks of the upper punch and the lower punch. The upper track is composed of multiple tracks, such as upper punch upper guide rail, upper punch lower guide rail, upper punch upper parallel guide rail, upper punch lower parallel guide rail and lower guide rail. They are respectively fixed on the upper track disc. The lower track consists of the undershoot upstream track, the lower thrust lower track and the fill track. They are respectively installed on the lower guide rail seat.
3. Filling adjustment device: The filling adjustment is used to adjust the weight of the tablet. The filling adjustment mechanism is set inside the main body, and the moon-shaped filling track can be observed on the plane of the main body. The high-speed tablet press is raised or lowered by the action of the screw to control the filling amount, and the clockwise filling amount is adjusted when the rotating disc is adjusted. decrease, and vice versa.
4. Plate thickness (pressure) adjustment device: adjust the plate thickness (pressure) by adjusting the lower pressure roller up and down. The lower pressing wheel is installed in the groove of the main body, sleeved on the eccentric shaft, and the outer end is connected on the hand wheel. When the external hand wheel is adjusted, the eccentric shaft drives the pressure wheel to rise and fall, that is, to adjust the plate thickness (pressure), so as to control the thickness and hardness of the pressure plate, and the up and down pressure adjustment roller can also be used as an adjustment device, but under normal circumstances Cannot be adjusted.
5. Feeding device; the device is composed of hopper, adjusting screw, feeder and so on. The feeder is a crescent grid feeder mounted on a turntable. Adjust the gap between the feeder and the turntable surface and the height of the hopper according to the fluidity of the particles.
6. Transmission: The transmission part of the high-speed tablet press is composed of a motor, a synchronous pulley, a worm gear reducer, and a test wheel. The motor is mounted on the motor base of the motherboard. After the motor starts, 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 side or rear doors to view and touch components directly.
7. Cover part: the shell of the high-speed tablet press is fully enclosed, which meets the requirements of GMP. The upper part has four windows surrounding the city for easy cleaning and maintenance. The lower part is closed with a stainless steel door, which is usually only closed and closed when repairing and installing molds. The console is mounted on the front of the machine. The tablet pressing chamber and the driving part of the machine are separated by a stainless steel shell to ensure the tablet pressing chamber is clean and protect the driving parts from powder contamination and corrosion.
High-speed tablet press workflow:
The workflow of the high-speed tablet press includes feeding, dosing, pre-compression, main compression molding and film formation. The upper and lower punches are driven by the punching plate to move from left to right along the upward