Fette Gmbh

Fette Compacting Gmbh

Jan Naeve

Ingo Schmidt

Thomas Heinrich

Friedrich Meissner

Stefan Luedemann

Sven Kolbe

Udo Baltruschat

Thomas Pannewitz

Harald Römer

Holger Behns

Kurt Marquardt

Wolfgang Soltau

Martin Plucinski

Harald Roemer

Carsten Jordt

Ulrich Zeuschner

Ulrich Arndt

Jürgen Hinzpeter

Heinrich Behrmann

Matthias Rau

Stephan Mallon

Frank Schade

Peter Lueneburg

Jürgen Schikowski

Matthias Dederichs

Peter Lüneburg

Michael Gruber

Reno Schiebe

Stefan Mallon

Detlev Scholz

Reinhard Wagner

Bernd Casemir-Malner

Casemir-Malner Bernd

Stefan Lüdeman

A rotor for a rotary press comprises a die plate, upper punch seats, and lower punch seats configured to be rotationally driven by a rotary drive. An annular discharge channel is configured to be in a fixed position with respect to the die plate and further configured to collect product residue from at least one of the die plate and the lower punch seat. The discharge channel additionally comprises a removal region where the product residue is configured to be removed from the annular discharge channel A catch element is configured to rotate in sync with the die plate and is guided within the annular discharge channel to convey the product residue collected in the annular discharge channel to the removal region.

Rotor for a rotary press

A tablet discharge gate for a tablet press comprises a tablet channel having an inlet and an outlet and comprising one of a tube shape and a trough shape, a first outlet channel, and a second outlet channel. A gate chamber is positioned between the outlet of the tablet channel and the first and second outlet channels. A drive apparatus is configured to move the tablet discharge gate between a first position in which tablets are supplied from the tablet channel to the gate chamber and into the first outlet channel of the gate, and a second position in which tablets are supplied to the tablet discharge gate chamber and into the second outlet channel.

Gate of a tablet discharge of a tablet press

The invention relates to a rotary tablet press comprising: a rotatingly drivable rotor, having a die plate comprising die holes and assigned to the die holes upper and lower punches, rotating synchronously with the die plate, whose axial movement is controlled by upper and lower control cams, having at least one filling station comprising at least one filling device for filling the die holes with material to be pressed, having at least one compression station disposed downstream of the filling station in the rotational direction of the rotor, comprising at least one pressing device which presses the upper and/or lower punches into the die holes when passing through the compression station in order to press the filled material in the die holes, and having at least one ejector station, disposed downstream of the compression station in the rotational direction of the rotor, comprising an ejector device for ejecting the pressed tablets in the die holes, characterized in that at least one vibration generator is provided in the circumferential direction of the upper and lower punches between the filling station and the ejector station that at least temporarily vibrates the upper and/or lower punches at least at the compression station and/or at the filling station and/or at least at an upper control cam and/or at least at a lower control cam.

Rotary tablet press and method for pressing tablets in a rotary tablet press

A compression punch for a rotary press, with a shaft, a punch head disposed at one shaft end and a compression zone disposed at the other shaft end, wherein the punch head features an upper mirror surface, an outer cylinder surface and a curved transition zone between the mirror surface and the cylinder surface, wherein the mirror surface and the transition zone form a three-dimensional surface, whose course in at least one radial direction can be described by a mathematical function whose second derivative is continuous.

Compression punch for a rotary press

The invention is related to a method for testing multilayer tablets in a multiple rotary press, in which die holes of a circulating die plate are successively filled with tablet material of different layers in consecutive filling devices, and the tablet material is compressed layer after layer to pressed articles having n layers by means of synchronously circulating compression punches in compression stations respectively associated to the filling devices, and the pressed articles are subsequently ejected and unloaded in a unloading station.

Method for testing multilayer tablets in a multiple rotary press, the tested tablets produced under normal operation, with m layers pressed and the m+1 layer suctioned off and the tablet fed to the testing station

Tablet flow for the conveying away of tablets pressed in a tablet press, with a main flow channel, which has at least one branching into at least one first flow channel and at least one second flow channel separated from the first flow channel by at least one separating wall, wherein a separator is provided at the branching, which can be actuated such that tablets are directed out of the main flow channel alternatively into the first flow channel or into the second flow channel, characterized in that the separator has a guide channel for the tablets and in that a guide gear drive is provided, with which the guide channel is moveable between a first position connecting the main flow channel with the first flow channel and a second position connecting the main flow channel with the second flow channel.

Tablet flow

The present invention is related to a method for testing multilayer tablets in a multiple rotary press, in which die holes of a circulating die plate are successively filled with tablet material of different layers in succeeding filling devices, and the tablet material is compressed one layer after the foregoing layer into pressed articles having n layers by means of synchronously circulating compression punches, and the pressed articles are subsequently ejected in an unloading station and taken out, in which in a testing procedure, pressed articles with m layers are taken out after the compression in a respective unloading station and are conveyed to a testing station, wherein applies 1&#x3c;=m&#x3c;=n, wherein before taking out the pressed articles, at least the m-th layer is compressed more strongly than during the normal manufacture of the multilayer tablets, wherein applies m&#x3c;n. According to the present invention it is provided that only pressed articles of die holes are supplied to the testing station, which had been completely filled with the tablet material of the m-th layer already before the initiation of the testing procedure.

Method for testing multilayer tablets

A pressing station in a rotary press having a bearing component for a compression roll that can be adjusted vertically in height along a guide attached to the frame of the rotary press, a first adjustment drive fastened to the frame, which is coupled via an adjustment drive to the bearing component for height adjustment of the bearing component, wherein a shaft or axle for the compression roll or the bearing component or a part of these is coupled to a second adjustment drive in such a way that the compression roll can be adjusted in its height independently from the first adjustment drive.

Pressing station in a rotary press

A powder press, with a press frame, which comprises an upper and lower frame section, an upper linear drive attached to the upper frame section and a lower linear drive attached to the lower frame section, wherein the drives are connected to an upper and lower punch plate or a die table, respectively, wherein the punch plates have a clamping system for an upper or a lower punch, a die clamping system on a die table with a die, and at least one force measuring device for measuring the pressing force on at least one punch, characterized in that at least one force measuring device is disposed between a punch plate and the associated clamping system.

Powder press

A filling apparatus for a rotary tablet press, which itself being arranged stationarily is associated to a circulating die plate of a rotor of the tablet press, with a filling chamber, which features an upper inlet opening for powder-shaped compression material and a filling opening aligned with die bores of the die plate, and with a conveying means in the filling chamber driven by a drive motor, wherein the filling chamber is circular, one single disc-shaped filling wheel is rotatably mounted around a vertical axis in the filling chamber, which has plural wings on the perimeter, spaced apart in the perimeter direction, which sweep over the filling opening upon rotation of the filling wheel, and the inlet opening is arranged in a distance above the filling wheel, preferably approximately centered with the axis of the filling wheel.

Filling apparatus for a rotary tablet press

A punch for a rotary press, which has a shaft and a head, wherein the head has an upper mirror surface, a cylinder surface and a rounded transition area between the mirror surface and cylinder surface with a first and a second radius, wherein the first radius is larger than the second radius and wherein the punch head also has a preferably conical transition area from the cylinder surface to the shaft, wherein the diameter of the head is less than 25 mm and the first radius of the transition area is selected such that its height is less than half the height of the cylinder surface.

Punch for a rotary press

Press for producing dimensionally stable pressed parts from powdered material, with a press frame, a die holding plate, at least one upper punch holding plate, at least one lower punch holding plate, adjusting drives for the upper punch and lower punch holding plate and/or die holding plate, a vertical guide in the press frame for at least the upper and lower punch holding plate and a measuring device for measuring the position of the upper punch holding plate, the lower punch holding plate and/or the die holding plate. A single measuring rule is attached in its thermal fixed reference point to a support vertically uncoupled from the press frame, on which measurement slides cooperating with the holding plates are guided.

Press

A rotor for a rotary tablet press, which has an upper and a lower punch guiding for upper and lower punches, which co-operate with bores of a die plate which is arranged between the upper and the lower punch guiding, wherein the punches have shafts, which are sealedly axially movable in guiding bores of the punch guidings by means of a sealing arrangement, and wherein means act between the shafts and the guiding bores which prevent a rotation of the pressing punches in the punch guidings, characterised in that the shafts have an out of round profile in the cross section, and the cross section of the guiding bores is complementary.

Growing community of inventors

Schattin, Germany

Jan Naeve