Analysis of the Working Principle of Pharma Capsule Filling Machine

In the pharmaceutical industry, the production process of drugs requires a high degree of precision and automation to ensure the stability and consistency of drug quality. As one of the key equipment in drug production, the Pharma Capsule Filling Machine involves multiple precise operation steps in its working principle, which will be elaborated in detail below.

Capsule Supply and Separation
Capsule Placement and Conveyance: Place the empty capsules neatly in a specially designed capsule hopper. The design of the capsule hopper can ensure that the capsules, under the action of gravity, enter the capsule guide groove in an orderly manner. With the up - and - down movement of the main board, the capsules are gradually guided to the next operation position.
Vacuum Separation: When the capsules enter a specific position, the capsule caps and capsule bodies are separated using the principle of vacuum suction. Under the action of vacuum, the capsule caps are adsorbed onto the upper module, while the capsule bodies remain in the lower module. This step prepares for the subsequent powder filling, and the accuracy of the separation directly affects the final filling quality of the capsules.

Powder Filling
Powder Height Control: In the powder - holding ring, sensors are installed to monitor the height of the powder in real - time. The sensors will control the spiral feeding rod above them to ensure that the powder always maintains a constant height, providing a stable powder supply for accurate metering and filling.
Metering and Tamping: The metering disk rotates intermittently under the drive of the machine. During the rotation, the tamping rod tamps the powder in the holes of the metering disk in turn. By precisely controlling the tamping force and number of times, the powder forms a tight and uniform powder column in the holes of the metering disk, ensuring that the amount of powder filled in each capsule is accurately consistent.
Powder Filling: When the metering disk rotates to the filling station, the formed powder column is accurately pushed into the capsule bodies in the lower module. This process requires a high degree of mechanical precision and synchronization to ensure that the powder enters the capsule bodies completely and accurately, avoiding under - filling or over - filling.

Capsule Rejection and Locking
Rejection of Unqualified Capsules: After the powder - filled capsules pass through the transition station, they enter the rejection station. At this station, through a series of detection devices, such as weight detection and filling amount detection, the capsules that do not meet the quality standards are identified and rejected. This step is crucial for ensuring the quality of the finished capsules and can effectively prevent unqualified products from entering the market.
Capsule Positioning and Locking: The qualified capsules enter the positioning station, where the upper and lower parts of the capsules are precisely aligned to prepare for the subsequent locking. Subsequently, the capsules enter the sealing station, and through the up - and - down reciprocating movement of the special ejector rod, the capsule caps and capsule bodies are tightly locked together to form complete finished capsules.

Finished Product Collection and Cleaning
Finished Product Collection: At the capsule discharge station, the already - locked capsules are ejected or discharged using a fixed rod and collected into a special container. The collection process needs to ensure the integrity of the capsules and avoid damage to the capsules during the collection process.
Machine Cleaning: Finally, at the vacuum - suction cleaning station, the machine will automatically start the purging device to clean all components, especially the upper and lower modules. Through the vacuum - suction method, the remaining powder and impurities are removed, making full preparations for the next working cycle and ensuring that the machine always remains in the best working state.

The working principle of the Pharma Capsule Filling Machine is a highly precise and complex process. All steps cooperate closely, and the slightest deviation in any link may affect the quality and production efficiency of drugs. With the continuous progress of science and technology, the Pharma Capsule Filling Machine is also constantly innovating and upgrading to meet the increasingly strict requirements of drug production.