Abstract:
A tablet press machine (100) comprises: a hopper (1) for feeding a powder or granular product (2) to a first disc (3a) that rotates about an axis (X) and is equipped with evenly distributed holes or dies (3); a second and third disc (4, 6) that are positioned above and below the first disc (3a), respectively, rotate about the axis (X) and support respective pluralities of upper and lower reciprocating punches (5,7). The punches (5, 7) are driven towards and away from each other when they are aligned with the dies (3) in such a way as to compress the product (2). Each of the punches (5, 7) comprises a cylindrical shank (8), one end of which is equipped with a working head (10) and sealed protection means (11) acting on the cylindrical shank (8) itself. The sealed protection means (11) comprise, for each punch (5, 7), a concertinaed sleeve (12) covering the cylindrical shank (8) and having an annular portion (13) constituting its far end relative to the working head (10), forming an annular seal and providing also a removable element used to attach support means (14) that protrude from the respective disc (4, 6). The near end (15) of each concertinaed sleeve (12) relative to the working head (10) presents an enlarged annular portion (16) that engages with a matching annular groove (17) in the cylindrical shank (8) to provide a tight seal.
Abstract:
In a method for monitoring the properties of pharmaceutical articles (2), in particular capsules (2), in a machine (1) that makes the articles (2), the pharmaceutical articles (2) are fed in single file from a station (3) where the articles (2) are made to an article (2) outfeed portion (6) of the machine (1) along a defined feed path (P) passing through an inspection station (8). In the inspection station (8) each pharmaceutical article (2) passes through an electromagnetic field (E) created by microwave radiation.
Abstract:
A tablet press machine (100) comprises: a hopper (1) for feeding a powder or granular product (2) to a first disc (3a) that rotates about an axis (X) and is equipped with evenly distributed holes or dies (3); a second and third disc (4, 6) that are positioned above and below the first disc (3a), respectively, rotate about the axis (X) and support respective pluralities of upper and lower reciprocating punches (5,7). The punches (5, 7) are driven towards and away from each other when they are aligned with the dies (3) in such a way as to compress the product (2). Each of the punches (5, 7) comprises a cylindrical shank (8), one end of which is equipped with a working head (10) and sealed protection means (11) acting on the cylindrical shank (8) itself. The sealed protection means (11) comprise, for each punch (5, 7), a concertinaed sleeve (12) covering the cylindrical shank (8) and having an annular portion (13) constituting its far end relative to the working head (10), forming an annular seal and providing also a removable element used to attach support means (14) that protrude from the respective disc (4, 6). The near end (15) of each concertinaed sleeve (12) relative to the working head (10) presents an enlarged annular portion (16) that engages with a matching annular groove (17) in the cylindrical shank (8) to provide a tight seal.
Abstract:
The thrusters or the rams for pressing the metered amounts of product into the metering seats are equipped with force transducers which emit an electrical signal proportional to the thrust exerted during the pressing step. This signal is transmitted to the processor for controlling the operation of the packaging machine, which compares the signal with predefined reference values, in order to check whether or not the weight of the metered amounts lies within acceptable values. If it does not, the processor causes expulsion, from the unloading flow of the full capsules, of those capsules with metered amounts which have an unacceptable weight and which, if necessary, may be weighed using a precision device connected to the processor which may use this signal to confirm the operation of the transducers or correct it automatically.
Abstract:
The device can be applied to compression machines including a turret (1), rotating around a vertical axis and fitted with a series of die holes (3) aimed at being filled with powder of granular material; pairs of punches (5,6), upper and lower punches respectively, related to each die hole (3) and guided slidably in the turret (1), engage the die holes (3) with respective counterfacing working heads (5a,6a). The device features a driving cam (9) that drives at least one of the punches (5,6) and determines the reciprocal distance between the working heads (5a,6a) of each pair of punches, in the material batching step and in the material loading step; the driving cam (9) moves axially with respect to the turret (1) so as to adjust this distance. Further cams (11,12) are provided for completion of guiding structure (15) with variable profile, which facilitates entering in the driving cam (9). The cams (11,12) are mechanically linked to each other, so as to change the profile in accordance with adjusting position of the driving cam (9).