As described herein, a multiple row turret module is for use in a rotary tablet press comprising a pressure roll assembly and a turret drive assembly. The multiple row turret module includes a turret comprising a hub selectively engageable by the drive assembly for rotation about a vertical axis. The hub supports a die table and upper and lower guideways defining a plurality of stations. Each station comprises an upper punch opening in the upper guideway and an aligned die opening in the die table and a lower punch opening in the lower guideway. The stations are aligned in a plurality of concentric rows. A plurality of upper punches are provided, one in each of the upper punch openings. A plurality of lower punches are provided, one in each of the lower punch openings. An upper cam assembly is supported above the upper guideway for selectively reciprocating the plurality of concentric rows of upper punches toward and away from the die openings responsive to rotation of the turret. A lower cam assembly is supported below the lower guideway for selectively reciprocating the plurality of concentric rows of lower punches toward and away from the die openings responsive to rotation of the turret. The pressure roll assemblies selectively engage the upper and lower punches responsive to rotation of the turret to compress a granulation into a tablet at the stations.

As described herein, a multiple row turret module is for use in a rotary tablet press comprising a pressure roll assembly and a turret drive assembly. The multiple row turret module includes a turret comprising a hub selectively engageable by the drive assembly for rotation about a vertical axis. The hub supports a die table and upper and lower guideways defining a plurality of stations. Each station comprises an upper punch opening in the upper guideway and an aligned die opening in the die table and a lower punch opening in the lower guideway. The stations are aligned in a plurality of concentric rows. A plurality of upper punches are provided, one in each of the upper punch openings. A plurality of lower punches are provided, one in each of the lower punch openings. An upper cam assembly is supported above the upper guideway for selectively reciprocating the plurality of concentric rows of upper punches toward and away from the die openings responsive to rotation of the turret. A lower cam assembly is supported below the lower guideway for selectively reciprocating the plurality of concentric rows of lower punches toward and away from the die openings responsive to rotation of the turret. The pressure roll assemblies selectively engage the upper and lower punches responsive to rotation of the turret to compress a granulation into a tablet at the stations.

The invention preferably relates to a compression roller station for rotary tableting machines with a guide profile which can be locked to the rotary tableting machine and comprises two side surfaces on which a pair of upper and lower shaft mountings for compression roller shafts are arranged externally in each case, so that two pairs of compression rollers can be attached to the same guide profile. In preferred embodiments, the shaft mountings have a laterally outwardly open shape, particularly preferably a u-shape, and are arranged for a swivelable mounting of compression roller shafts. In a further aspect, the invention relates to a rotary tableting machine comprising such a preferred compression roller station.

The invention preferably relates to a compression roller station for rotary tableting machines with a guide profile which can be locked to the rotary tableting machine and comprises two side surfaces on which a pair of upper and lower shaft mountings for compression roller shafts are arranged externally in each case, so that two pairs of compression rollers can be attached to the same guide profile. In preferred embodiments, the shaft mountings have a laterally outwardly open shape, particularly preferably a u-shape, and are arranged for a swivelable mounting of compression roller shafts. In a further aspect, the invention relates to a rotary tableting machine comprising such a preferred compression roller station.

A rotary tablet press machine comprises a rotating compression turret which includes a die table, provided along a circumferential portion thereof with a plurality of dies, a plurality of first punches and second punches associated with respective dies; a dosing station for dosing high-porosity powdered product in the dies; a compression station provided with a first and a second compression roller adapted to linearly move respectively the first punches and the second punches within the respective dies in order to compress said product and producing tablets; and a compacting station arranged between the dosing station and the compression station and provided with at least one compacting cam adapted to push the first punches and/or the second punches within the respective dies in order to compact the dosed product and allow air in said product to exit.

A rotary tablet press machine comprises a rotating compression turret which includes a die table, provided along a circumferential portion thereof with a plurality of dies, a plurality of first punches and second punches associated with respective dies; a dosing station for dosing high-porosity powdered product in the dies; a compression station provided with a first and a second compression roller adapted to linearly move respectively the first punches and the second punches within the respective dies in order to compress said product and producing tablets; and a compacting station arranged between the dosing station and the compression station and provided with at least one compacting cam adapted to push the first punches and/or the second punches within the respective dies in order to compact the dosed product and allow air in said product to exit.

A rotary tablet press comprises a rotor comprising a rotary drive configured to rotate the rotor and a die plate that rotates with the rotor and comprises a plurality of cavities and a plurality of upper and lower punches. A rotational speed governor is configured to drive the rotary drive of the rotor by comparing a measured rotor rotational speed with a target rotational speed value. A pilot control apparatus is configured to provide an additional target torque for driving the rotary drive. The additional target torque is based on values of a pressing force of at least one of the upper and lower punches input into the pilot control apparatus.

A rotary tablet press comprises a rotor comprising a rotary drive configured to rotate the rotor and a die plate that rotates with the rotor and comprises a plurality of cavities and a plurality of upper and lower punches. A rotational speed governor is configured to drive the rotary drive of the rotor by comparing a measured rotor rotational speed with a target rotational speed value. A pilot control apparatus is configured to provide an additional target torque for driving the rotary drive. The additional target torque is based on values of a pressing force of at least one of the upper and lower punches input into the pilot control apparatus.

The invention relates to an impeller filling shoe for material feed to die bores of a rotary press, which is built-up modularly in order to enable a change in function between a 2-chamber filling shoe comprising a filling vaned wheel and a proportioning vaned wheel, and a 3-chamber filling shoe comprising a filling vaned wheel, a proportioning vaned wheel and a feeding vaned wheel, wherein the impeller filling shoe does not comprise a gearbox for driving the vaned wheels. Furthermore, the invention relates to a rotary press comprising the modular impeller filling shoe, whereby the gearbox for driving the vaned wheels is located outside the impeller filling shoe. The invention relates in addition to the use of the impeller filling shoe according to the invention in methods for converting the modular impeller filling shoe from a 2-chamber filling shoe to a 3-chamber filling shoe and vice versa. The functional conversion of the impeller filling shoe can take place both outside the tablet press as well as in the mounted state inside the tablet press.

The invention relates to an impeller filling shoe for material feed to die bores of a rotary press, which is built-up modularly in order to enable a change in function between a 2-chamber filling shoe comprising a filling vaned wheel and a proportioning vaned wheel, and a 3-chamber filling shoe comprising a filling vaned wheel, a proportioning vaned wheel and a feeding vaned wheel, wherein the impeller filling shoe does not comprise a gearbox for driving the vaned wheels. Furthermore, the invention relates to a rotary press comprising the modular impeller filling shoe, whereby the gearbox for driving the vaned wheels is located outside the impeller filling shoe. The invention relates in addition to the use of the impeller filling shoe according to the invention in methods for converting the modular impeller filling shoe from a 2-chamber filling shoe to a 3-chamber filling shoe and vice versa. The functional conversion of the impeller filling shoe can take place both outside the tablet press as well as in the mounted state inside the tablet press.