The present invention relates to a punching tool of a sintering press, comprising at least one lower punch and an upper punch, a first punch of the upper punch and/or lower punch having a top piece that is asymmetric with respect to an axial axis of the punch press. The first punch has a geometry which widens from the top piece towards a base and is also asymmetric with respect to the axial axis of the punch press. The invention further relates to a method for pressing at least one powdery material to a green body in a sintering press.

A sintering press includes at least one upper punch and a lower punch, a powder reservoir for filling a female die of the sintering press with at least one powder material that can be sintered, and a female die for producing a green body using the powder material from the powder reservoir. A first punch of the upper punches and/or lower punches has a punch top which is off-center and asymmetric with respect to an axial axis of the sintering press and which can be moved in the female die. The first punch is asymmetric in shape between the punch top and the base, which shape at least reduces an axial tilting of the punch and a lateral drag of the punch top on an adjacent outer surface in the female die during insertion and extraction therefrom during a pressing step in the production of the green body.

A method for producing tablets with an active substance including inputting a target number of tablets to produce and a target mass indicating the quantity of active substance per tablet, transmitting the target number and target mass to a controller configured to control a dosing device, a weighing device, extendable upper and lower punches, filling a quantity of the active substance from a container into an opening of a die. While filling, a pressure face of the lower punch closes the opening, and the amount of the active substance is measured by the weighing device on which the lower punch and the die are placed while filling. The method further including pressing the active substance, releasing a pressed tablet from the die, and repeating the repeating the process until the target number is reached.

A rotary tablet press machine has a compression turret rotating about a rotation axis and including a die table with dies, lower and upper punches associated in pairs with respective dies, a dosing station for filling dosing cavities formed by the dies closed at the bottom by the lower punches with a product, and a cam device for moving the lower punches inside the respective dies and obtaining settled filling depth. The cam device includes first and second filling cams provided respectively with first and second channels to guide follower ends of the lower punches along a filling path. The machine also has first and second adjustment elements respectively supporting the first and second filling cams. The machine further has a first driving device for moving with respect to compression turret and along a first direction simultaneously the first and second adjustment elements.

A tablet press comprises a gate and a control apparatus configured to generate a switching signal. A drive apparatus is configured to move the gate in response to the switching signal received from the control apparatus between a first switching position and at least a second switching position. At least one sensor is configured to generate a detection signal when the gate reaches one of the switching positions. The control apparatus receives the detection signal and is configured to output a switching signal to the drive apparatus to at least partially move the gate back into a home position when there is a switching signal to move the gate out of the home position and there is no detection signal received from the at least one sensor. The control apparatus subsequently outputs a switching signal to again move the gate out of the home position to a target position.

A modular system for producing dosage-form bulk material in the form of dosage-form base materials or dosage forms. The system includes at least one processing unit (2) which includes a plurality of process stations, at least one container for receiving dosage-form bulk material, and at least one handling system, the at least one handling system transferring the containers between process stations. Also described is a method for producing dosage-form bulk material.

The present disclosure describes a compression device, a compression process, a method of producing synthetic materials and a method of sample characterization. The present disclosure belongs to the fields of Physics, Chemistry and Engineering.

A powdery-material feeding device includes a controller configured to selectively conduct constantly keeping-control of constantly keeping rotational speed of a motor, current or voltage applied to the motor without any change as a manipulated variable for a predetermined period, or feedback-control of repetitively obtaining a difference between a discharge flow rate of the powdery material and a target value thereof at predetermined cycles and adjusting by increasing or decreasing the manipulated variable at each of the predetermined cycles in order to reduce the difference, the controller conducts the constantly keeping-control immediately after a motor starts, shifts to the feedback-control when the difference between the discharge flow rate of the powdery material and the target value thereof has an absolute value less than a threshold after the period for the constantly keeping-control elapses, and conducts constantly keeping-control without shifting to the feedback-control when the absolute value of the difference between the discharge flow rate of the powdery material and the target value thereof is more than the threshold after the period for the constantly keeping-control elapses, and the manipulated variable during the repeated constantly keeping-control is changed in accordance with the difference between the discharge flow rate of the powdery material and the target value thereof after elapse of the period for latest constantly keeping-control.

A metal-powder and/or ceramic-powder press device includes at least one first punch (11) which, in a pressing position, is arranged to pass from a first side into a die opening, filled with ceramic and/or metal powder, of a die (13). At least one second punch (12), in the pressing position, is arranged to pass from a second side into the die opening, filled with ceramic and/or metal powder, of the die (13). A position measuring device determines a position of the first punch (11) and includes a first measuring element (16) and a second measuring element (19). The first measuring element (16) is connectable to the first punch (11) and the second measuring element (19) is connectable to the second punch (12), such that a relative position of the measuring elements to one another changes during the pressing operation. A sensor device determines the change in the relative position.

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.