Analysis of the structure and use requirements of tablet presses with special requirements

Analysis of the structure and use requirements of tablet presses with special requirements

Tablets with special requirements have a targeted structure and also need to pay attention to the use requirements. The following is the analysis and introduction of several common models.

Analysis on the structure and application requirements of special-shaped punch tablet press

Tablets compressed with special-shaped molds have clear positioning requirements for the mold during compression, such as square-trapezoid-triangle-ellipse-polygon and other non-circular shapes. The structural requirements of the tablet press are mainly the processing of key holes punched on the turntable (for positioning the upper punch), and the requirement of the mold is that the upper punch needs to have direction keys so that it can be connected during installation to the top of the turntable. Matching punch. The lower punch does not leave the middle die hole during the tableting process, and its positioning and coordination are clear, so no special handling is required.

When compressing a tablet with a profiled die, the punch is located in the punch hole and cannot rotate freely. It can only move up and down along the upper and lower guide rails, and at the same time, the sliding friction caused by the rotating table and guide rails will increase the punching. Wear of rods and guides and wear of rams and turntables. Therefore, during use, special attention must be paid to the lubrication of the punch and guide rail to form a daily maintenance system; the key of the punch should also be checked regularly. If the key is loose, it will cause the wear of the key, key slot, punching rod and punching hole, which will affect the positioning requirements of the puncher on the middle mold. In severe cases, the punch and intermediate mold will be damaged and cannot be produced normally.

When installing a special-shaped mold, the punch and the middle mold should be accurately positioned first. After the punch enters the middle mold freely, the upper mold of the middle mold should be tightened to prevent the punch and the middle mold of the tablet press from 'biting' due to incorrect positioning. After installing all the molds, use the trolley for a few laps without any abnormalities, and then turn on the power to run.