A rotary compression-molding machine includes a lower punch-retaining portion disposed below a table including die bores and retaining a lower punch, and a dust-proofing device including a sealing case supported by the lower punch-retaining portion and including a bottom wall that includes an insertion bore penetrated by the lower punch, faces an upward surface of the lower punch-retaining portion, and includes a dust receiver disposed outside the insertion bore and configured to capture dust, and an outer wall that rises from an outer edge of the bottom wall, has an upper end positioned higher in level than an upward surface of a circumferential edge of the insertion bore, and includes a returning part projecting inward from the upper end or a portion adjacent thereto.

A rotary compression-molding machine includes a lower punch-retaining portion disposed below a table including die bores and retaining a lower punch, and a dust-proofing device including a sealing case supported by the lower punch-retaining portion and including a bottom wall that includes an insertion bore penetrated by the lower punch, faces an upward surface of the lower punch-retaining portion, and includes a dust receiver disposed outside the insertion bore and configured to capture dust, and an outer wall that rises from an outer edge of the bottom wall, has an upper end positioned higher in level than an upward surface of a circumferential edge of the insertion bore, and includes a returning part projecting inward from the upper end or a portion adjacent thereto.

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 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 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 process is disclosed for the manufacture of a compressed product consisting of a multilayer tablet formed in a single compression operation.

A process is disclosed for the manufacture of a compressed product consisting of a multilayer tablet formed in a single compression operation.

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.