초록 ▼

Device for monitoring the production of tablets in a rotary press, with die bores in a circular die plate for the accommodation of a powder to be pressed, upper- and lower stamps, a pressing station for pressing the powder in the die bores by means of the upper and lower stamps, a tablet stripper fo

Device for monitoring the production of tablets in a rotary press, with die bores in a circular die plate for the accommodation of a powder to be pressed, upper- and lower stamps, a pressing station for pressing the powder in the die bores by means of the upper and lower stamps, a tablet stripper for stripping off the tablets ejected by the lower stamps from the upper side of the circular die plate and a machine computer, wherein a contactless working temperature measurement device, being in communication with the machine computer, with a measurement plane between the pressing station and the tablet stripper, is arranged in the press room of the rotary press, and the measurement time of the temperature measurement device is such that at least some of the tablets per rotation of the circular die plate can be established in their temperature.

대표청구항 ▼

What is claimed is: 1. A device for monitoring the production of tablets, comprising: a rotary press, with die bores in a circular die plate for the accommodation of a powder to be pressed; upper-and lower stamps; a pressing station for pressing the powder in the die bores by means of the upper and

What is claimed is: 1. A device for monitoring the production of tablets, comprising: a rotary press, with die bores in a circular die plate for the accommodation of a powder to be pressed; upper-and lower stamps; a pressing station for pressing the powder in the die bores by means of the upper and lower stamps; a tablet stripper for stripping off the tablets ejected by the lower stamps from the upper side of the circular die plate; a machine computer; a contactless working temperature measurement device, which is in communication with the machine computer (44), having a measurement plane, the contactless working temperature measurement device being arranged between the pressing station (24, 26) and the tablet stripper (38), and the measurement time of the temperature measurement device is such that the temperature can be measured of at least two or more of the tablets per rotation of the circular die plate; further including a position transmitter (48), which is in communication with the machine computer (44), and which triggers via the machine computer (44) either a measurement procedure, which is triggered by the position of the dies (16) with respect to the measurement plane of the contactless working temperature measurement device, detected by the position transmitter (48), or an evaluation of a measurement signal in the machine computer (44). 2. The device according to claim 1, characterised in that a contactless temperature measurement device is provided, an infrared measurement device for instance. 3. The device according to claim 1, characterised in that the temperature measurement device is in communication with the machine computer (44) via a line or in a wireless manner for the purpose of logging, monitoring, sorting and so forth. 4. A method for monitoring the production of tablets, comprising the steps of: providing a rotary press, which has a rotor with upper and lower stamps, a circular die plate, cam system for the stamps, at least one pressing station and a filling system for the powder-shaped pressing material; measuring the temperature of two or more tablets per rotation of the circular die plate using a contactless working temperature sensor having a short temperature acquirement time, the temperature of the tablets is measured in a press room, after the upper stamps have left the die; determining a temperature measurement position using position signals created with a position transmitter, the temperature data are mathematically related to the temperature measurement point, and the maximum temperature of the tablet is established by means of a cooling characteristics of the tablets, the point in time of temperature measurement and the point in time of the pressing. 5. The method according to claim 4, characterised in that at least two temperature measurements per tablet are carried out. 6. The method according to claim 4, characterised in that the energy quantity taken up by the tablets is established with the aid of the mass of the pressed articles and a time-temperature diagram for the material of the tablets.