Apparatus for the manufacture of layered articles such as multilayer tablets

Abstract

Abstract An apparatus for the manufacture of multilayer articles has a plurality of female dies mounted in a rotary disc. A plurality of feeding devices equal in number to the number of layers in the articles to be manufactured is distributed about the rotary disc. Each feeding device admits a quantity of material into the female dies as these travel by. A compressing device is arranged downstream of each feeding device as seen in the direction of movement of the female dies. The compressing devices compress the material admitted into the female dies by the respective feeding devices and also cause the various layers of material to adhere to one another. When the required number of layers has been formed, the resulting article is ejected from the respective female die. One or more of the feeding devices is movable to an inoperative position in which it is unable to feed the female dies. This movement may be effected while the female dies rotate. The purpose of a movable feeding device is to permit the dosing accuracy of another feeding device to be checked. Thus, by moving a feeding device to an inoperative position, it becomes possible to accurately weigh out the dose of material fed to a female die by another feeding device since the material normally fed by the movable feeding devices does not interfere with the weight measurement. Furthermore, movement of a feeding device to an inoperative position enables a dose of material which is to be weighed to be given a second compression with the compressing device downstream of the movable feeding device. This enhances the cohesiveness of the dose to be weighed.

Inventors

• 👤 Werner Stuben
• 👤 Ulrich Zeuschner

Bibliographic Details