Fully automatic powder tablet pressIt is an automated equipment that compresses powdered materials into tablets or specific shapes, widely used in industries such as pharmaceuticals, chemicals, food, ceramics, etc. The following are the detailed operation steps and precautions:
1、 Preparation before operation
Equipment inspection
Check if the appearance of the tablet press is intact, without any damaged or loose parts.
Confirm that the power and gas sources (if necessary) are connected properly and the voltage meets the equipment requirements (usually 220V/380V).
Check if the hydraulic system (if any) has sufficient oil level and no leaks in the pipelines.
Clean the mold, punch, and workbench to ensure there are no residual materials or foreign objects.
Material preparation
Weigh the powder material according to the process requirements to ensure that the particle size and humidity meet the pressing conditions (if sieving or drying treatment is required).
Add an appropriate amount of lubricant (such as magnesium stearate) to improve material flowability and reduce mold sticking.
Mold installation
Select the appropriate punch and mold (such as circular or irregular) according to product specifications.
Fix the mold on the worktable of the tablet press, adjust the gap between the punch and the middle mold to ensure alignment without deviation.
Manually rotate the flywheel or start a trial run to check if the mold runs smoothly without any jamming or abnormal noise.
2、 Parameter settings
stress regulation
Set the main pressure (compression force) and pre pressure (pre compression stage pressure) through the control panel, and adjust according to the material properties and tablet hardness requirements (usually ranging from 5-50 tons).
Example: When compressing pharmaceutical tablets, the main pressure may be set to 20-30 tons and the pre pressure may be set to 5-10 tons.
speed control
Set the tablet pressing speed (tablets/minute) and adjust it according to equipment performance and material flowability (usually 10-50 tablets/minute).
Avoid uneven weight or fragmentation of tablets caused by excessive speed.
Fill depth
Adjust the descent depth of the punch, control the material filling amount, and ensure that the tablet weight meets the standard (such as ± 5% deviation).
Verify the filling amount through weighing method or online detection system.
holding time
Set the pressure holding time (usually 0.1-1 second) to ensure that the tablet is fully compacted.
3、 Start and Run
No load trial operation
Start the device without adding any materials, run for 1-2 minutes, and check if all components are operating normally without any abnormal vibration or noise.
Add materials
Pour the pre processed powder material into the feeding hopper to ensure even feeding and avoid accumulation or vacancy.
Formal compression molding
Start the tablet pressing program, and the equipment automatically completes the processes of feeding, pre pressing, main pressing, and tablet dispensing.
Observation of tablet appearance: The surface should be smooth, without cracks, missing corners, or delamination.
Regularly inspect tablet weight, hardness, disintegration time and other indicators to ensure compliance with quality standards.
4、 Monitoring during operation
Device Status
Monitor the displayed values of pressure gauges and temperature gauges (if necessary) to ensure they are within the normal range.
Listen to the sound of the equipment running, abnormal noise may indicate mold wear or loose components.
Material Status
Check the amount of material in the feeding hopper to avoid fluctuations in tablet weight caused by material breakage.
Observe the tablet opening to ensure that the tablet falls off smoothly without sticking or sticking to the mold.
quality sampling inspection
Randomly inspect tablets every batch or every 30 minutes, and record data such as weight, hardness, appearance, etc.
If any non-conforming products are found, immediately stop the machine to adjust parameters or clean the mold.
5、 Shutdown and Cleaning
Normal shutdown
Stop adding materials and press the "stop" button after the remaining materials are pressed.
Turn off the power and air supply, and drain the hydraulic system pressure (if any).
Emergency shutdown
When encountering equipment failure or safety hazards, immediately press the "emergency stop" button.
Cut off the power, investigate the cause (such as mold jamming or abnormal pressure), and then restart.
Cleaning and maintenance
Dismantle the mold and clean any remaining materials with a soft bristled brush or compressed air.
Wipe the punch and mold with alcohol or specialized cleaning agent to avoid corrosion.
Check the wear of the mold and replace the punch or middle mold if necessary.
Regularly lubricate transmission components (such as bearings and guide rails) to extend equipment life.
6、 Precautions
Safety first
Wear protective gloves and goggles during operation to avoid contact with high-speed moving parts.
It is prohibited to adjust the mold or parameters while the device is running.
parameter optimization
When pressing new materials for the first time, it is necessary to determine the optimal parameters such as pressure and speed through small-scale experiments.
Record process parameters for easy replication in subsequent production.
mold maintenance
After long-term use, the surface of the mold may wear out and needs to be polished or replaced regularly.
Avoid hitting the mold with hard objects to prevent deformation.
Environmental Requirements
Keep the workshop clean and control the temperature and humidity (if drug pressing requires relative humidity ≤ 65%).
Stay away from corrosive gases or dust to prevent equipment from rusting.
7、 Common Problems and Solutions
| problem | Possible reasons | solution |
| Tablet fragments | Excessive pressure and high elasticity recovery of materials | Reduce the main pressure and increase the pre pressure |
| Tablet weight exceeds tolerance | Insufficient filling depth or uneven feeding | Adjust the depth of the punch and check the feeding system |
| sticking to the mold | High material humidity and insufficient lubricant | Dry materials and increase the proportion of lubricants |
| Equipment abnormal noise | Bearing wear and loose transmission belt | Replace the bearing and tighten the drive belt |
Through standardized operation and regular maintenance, the fully automatic powder tablet press can achieve efficient and stable tablet production, ensuring product quality and production safety.