FETTE GMBH Patent applications |
Patent application number | Title | Published |
20120195992 | METHOD AND APPARATUS FOR TEST PRESSING MULTI-LAYER TABLETS OR COATED TABLETS - The invention relates to an apparatus for test pressing tablets with at least two lavers. | 08-02-2012 |
20110000272 | Compression punch for a rotary 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. | 01-06-2011 |
20100285166 | ROTARY PRESS - A rotary press, with a rotor rotatingly drivable around a vertical axis, which features a die plate having die bores on a partial circle and upper and lower punches guided in guiding devices, radial cams for the upper and lower punches, at least two compression stations spaced apart in the circumferential direction and with an upper and a lower compression roller, a first filling device in the circumferential direction of a first compression station and a second filling device located behind the first compression station in the circumferential direction, wherein the rotor features an annular surface in a radial distance to the partial circle for the die bores and being concentric to the rotational axis of the rotor, wherein first deflecting means are provided between the second compression station and the first filling device that direct the ejected pressed articles towards the annular surface, second deflecting means are provided that direct the pressed articles from the annular surface towards off from the rotor, and third deflecting means behind the first compression station in the circumferential direction which direct the pressed articles ejected from the die bores towards off from the rotor, characterised in that the annular surface is disposed radially inside the partial circle and limited towards the partial circle by an annular stationary lock-out between the first and the second deflecting means. | 11-11-2010 |
20100251909 | PRESSING STATION IN A ROTARY PRESS - 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. | 10-07-2010 |
20100229746 | METHOD AND APPARATUS FOR DEDUSTING A SUCTION SYSTEM FOR A ROTARY PRESS - A method for dedusting a suction system for rotary presses, wherein the cleaning liquid is guided into the suction system, and wherein the suction system is closed in the region of the press room of the press, and at least a part of the suction system is flooded with cleaning liquid, and the cleaning liquid is subsequently drained into the press room. | 09-16-2010 |
20100101394 | PUNCH FOR A ROTARY PRESS - A compression punch for a rotary press, with a punch shaft that has a punch head at its one end and means for accommodating a separate punch insert at the other end, and with fastening means for detachably fastening the punch insert on the punch shaft, wherein the punch head and the punch shaft have an axial through bore, the axial through bore accommodates a drawbar that has a tensioning head at the end turned away from the punch head, said tensioning head having at least one connection portion, the punch insert has a recess at the end facing the punch shaft which is realised to be detachably connectible with the connection portion, and that tensioning means are arranged in the axial through bore, by which the drawbar can be tensioned in the direction of the punch head. | 04-29-2010 |
20100078841 | METHOD FOR QUALITY SURVEILLANCE OF POWDERED PRESSED MATERIAL AND A ROTARY PRESS FOR PERFORMING THE METHOD - A method for quality surveillance of powdered press material for a rotary press, in which the press material is fed from a reservoir via a preferably vertical feed channel to a filling device, which continuously fills dies of a rotor with press material wherein to the feed channel and/or the filling device is assigned a microwave resonator with an analysis unit, which measures the moisture and/or the density and/or the size of the granules of the press material, and at least one press variable of the microwave resonator is used for changing a control variable of the rotary press. | 04-01-2010 |
20100062257 | HOB CUTTER WITH A COATING AND METHOD FOR COATING HOB CUTTER - The invention relates to a hob cutter tool with a coating, wherein the coating is produced by a physical vapor deposition method, in which in a coating chamber in an atmosphere containing nitrogen, an arc discharge is generated in each case between at least one anode and at least one pure Al cathode on the one hand, and at least one pure Cr cathode on the other hand, and in this way, Al and Cr are vaporized from the cathode, in which the hob cutter tool to be coated is rotated in the coating chamber, wherein the tool is subsequently guided past the at least two cathodes, and in which the vaporized Al and Cr is deposited in atomic or ionized form together with nitrogen from the atmosphere containing nitrogen onto the hob cutter tool led rotating past the cathodes. The coating has a multiplicity of layers, composed of (AlCr)-nitride, arranged on top of each other, wherein the multiplicity of layers is formed from two layer types differing with respect to their Al:Cr ratio, wherein a first layer type has an Al:Cr ratio in the range of 55:45 to 65:35, and a second layer type has an Al:Cr ratio in the range of 70:30 to 74:26, and wherein the two layer types alternate with each other in the coating, wherein each of the layers, in turn is formed from a multiplicity of nanolayers arranged on top of each other, and wherein the coating is connected to the tool base body using a bonding layer. Furthermore, the invention relates to a method for recoating such a hob cutter tool. | 03-11-2010 |
20100059292 | METHOD FOR TESTING MULTILAYER TABLETS IN A MULTIPLE 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, wherein in a testing procedure, pressed articles having in layers are unloaded in an unloading station after the compression and are fed to a testing station, wherein holds 1<=m03-11-2010 | |
20100028478 | POWDER 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. | 02-04-2010 |
20090311063 | TOOL ARRANGEMENT FOR THE PRODUCTION OF HELICAL TEETH IN GEAR WHEELS - Tool arrangement for the production of helical teeth in gear wheels, wherein a roughing hob ( | 12-17-2009 |
20090269433 | PUNCH FOR A ROTARY 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. | 10-29-2009 |
20090267303 | METHOD FOR CLOSING BAGS MADE OF PLASTICS AND CLAMPING CLIP FOR IMPLEMENTING THE METHOD - Method for closing bags made of plastics, in which initially a clip made of plastics is positioned in a clamping manner around the gathered upper end of the bag and subsequently the gathered end of the bag is welded and/or sealed by means of a hot surface. | 10-29-2009 |
20090252823 | ROTOR FOR A ROTARY TABLET PRESS - A rotor for a rotary tablet press, which has an upper and a lower punch guide for upper and lower punches that interact with holes in a die plate that is arranged between the upper and lower punch guide, where the punches are axially movable in guide holes of the punch guides and have heads that interact with compression rollers of the tablet press, wherein the press punches are guided axially in the guide holes secure against rotation, and the punch heads have on opposite sides flat areas that are facing the adjacent punch heads. | 10-08-2009 |
20090243132 | APPARATUS AND METHOD FOR THE MEASUREMENT OF THE VERTICAL POSITION OF UPPER AND LOWER PUNCHES OF A ROTARY TABLET PRESS - The present invention is related to an apparatus and a method for the measurement of the vertical position of upper and lower punches, pairwisely associated to a rotatably driven rotor of a rotary tablet press and rotating synchronously with the rotor, which perform a vertical movement in certain regions along the circumference of their rotational movement during a rotation of the rotor. The apparatus features at least one scale arranged on at least one of the upper and/or lower punches, running in parallel to the vertical movement direction of the respective upper and/or lower punch, and at least one reading device associated to the scale, also rotating synchronously with the rotor, by means of which a vertical position of the respective upper and/or lower punch can be measured by reading out the scale. The inventions is furthermore related to a corresponding rotary tablet press and a corresponding method. | 10-01-2009 |
20090235710 | ADJUSTABLE KNURLING TOOL - A knurling tool, with a base body featuring an axis and adapted to be clamped into a machine tool, which accommodates a holder and knurling wheels rotatably mounted in the holder, wherein knurling wheels arranged at equal circumferential distances are mounted in the holder around a wheel axis which embraces a first angle α | 09-24-2009 |
20090191297 | TABLET PRESS - A tablet press with a rotor, which is rotatably mounted in a stand of the tablet press and which has an upper punch accommodation for the upper punches and a lower punch accommodation for the lower punches of the tablet press, as well as a die plate with a series of die bores which are aligned with the upper and the lower punches, wherein the die plate consists of at least two ring segments which can be attached on the rotor by means of a fastening device, wherein clamping elements are arranged in axis parallel passages of the rotor spaced apart in the perimeter distance, which act against the ring segments from the bottom side and clamp against an abutment surface of the rotor, characterised in that at least one drive device for the clamping elements is arranged in the stand of the tablet press, with a coupling element adjustable in the height, which can be selectively set into engagement with the lower end of the clamping element. | 07-30-2009 |
20090152751 | METHOD FOR TESTING MULTILAYER TABLETS - 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<=m<=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 m06-18-2009 | |
20090142438 | ROTARY PRESS - A rotary press with a stand, in which a rotor driven by a drive motor is rotatably mounted around a vertical axis, wherein the rotor has an upper and a lower punch guide for upper and lower punches and a die plate between the punch guides, wherein further the compression punches co-operate with die bores of the die plate, and further with at least one filling- and dosage station arranged on a circle, which has a radial dosage cam element which is adjustable in its height by means of a dosage drive and which presets the height of the lower punches in the filling- and dosage station, with at least one compression station arranged on a circle with at least one upper and one lower compression roller, which co-operate with the upper and lower punches, wherein the compression rollers are adjustable in the height by a compression roller drive, and with fastening means for fastening the compression roller- and dosage drives on the stand, wherein the dosage drive and the compression roller drive have identical installation means, the stand has an upper and a lower accommodation platform and the accommodation platforms have identical accommodation means for the installation means on the sides facing each other, which are in a coincident arrangement with respect to each other. | 06-04-2009 |
20090142437 | FILLING APPARATUS FOR A ROTARY TABLET 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 centred with the axis of the filling wheel. | 06-04-2009 |
20090139417 | ROTARY PRESS - A rotary press with a stand, a rotor rotatably mounted around a vertical axis in the stand and being driven, which has an upper and a lower compression punch accommodation for upper and lower punches which co-operate with bores of a die plate of the rotor, and upper and lower control cam elements which can be detachably fastened on a cam carrier of the stand and which guide heads of the compression punches by means of control cams during the rotation of the rotor, characterised in that at least one control cam element, guiding the compression punch heads radially outside or radially inside, can be detachably fastened on the carrier and can be moved radially away from the punch heads when the fastening means is detached, so far that by-passing the punch heads, it can be taken out parallel to the axis of the rotor, towards the upside or towards the bottom side, respectively. | 06-04-2009 |
20090074901 | ROTOR FOR A ROTARY TABLET 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. | 03-19-2009 |
20090074900 | VISUAL MONITORING DEVICE FOR ROTARY PRESS - A visual monitoring device for rotary presses, in which a rotor, with upper and lower punches and a die plate, at least one compression station, at least one filling station, and at least one ejector station are arranged in a housing, at which individual process steps occur, characterized in that arranged in the housing is at least one high speed camera, whose lens is directed onto a location in the housing, and to which an image analysis device is connected. | 03-19-2009 |
20090072491 | ROTARY TABLET PRESS - A rotary tablet press, with a rotor driven by a driving motor, which has a die plate as well as an upper and a lower guiding for upper and lower punches, which co-operate with bores of the die plate, a stationary housing closely surrounding the rotor, which constitutes a pressing room, and with at least one ring-shaped sealing arrangement, which seals the housing against a punch guiding, wherein the sealing arrangement has a ring-shaped holder inside the housing, wherein the ring-shaped holder is axially movable between a first and a second position by means of a stationarily arranged lifting device, the sealing arrangement has a first sealing portion, which is continuously in engagement with a first sealing surface of the housing in the first and in the second position, and a second sealing portion which is in engagement with a second sealing surface of the punch guiding with a first sealing force in the first position and is in engagement with the second sealing surface in the second position either with a second sealing force, which is smaller than the first sealing force, or is out of engagement with the same. | 03-19-2009 |
20090035413 | STAND FOR A ROTARY TABLET PRESS - A stand for a rotary tablet press, which supports a rotor with electric drive motor on a horizontal carrying element, with damping means between the stand and an underframe supporting itself on the ground for the purpose of vibration uncoupling between stand and underframe, wherein a first horizontal carrying element supports the rotor with the drive motor and a lower pressing roller unit of a least one pressing station, a second horizontal carrying element which is arranged in a distance above the first carrying element holds an upper pressing roller unit belonging to the pressing station, the first and the second carrying element are fixedly connected with each other via at least two vertical supports, and the supports rest on the underframe via damping means. | 02-05-2009 |
20090027854 | COOLING SYSTEM FOR A ROTARY TABLET PRESS - A cooling system for a rotary tablet press with which a rotor is driven by an electrical drive motor and the rotor and drive motor are arranged in a closed housing, and a control cabinet for the drive motor and further units in the housing, wherein arranged within the housing is a cooling machine whose evaporator is part of a first heat exchanger, whose other part is arranged in a coolant circuit for the drive motor, a fan is arranged in a channel in the housing closed relative to the housing interior, where the fan draws cool air in via an air inlet of the housing and gives it off via an air outlet of the housing, wherein the cool air is engaged in heat exchange with a condenser of the cooling machine. | 01-29-2009 |
20090026897 | SYSTEM FOR THE PRODUCTION OF PREFORMS MADE OF POWDER MATERIAL, IN PARTICULAR TABLETS - System for the production of preforms made of a powder material, in particular tablets, with a rotary tablet press, which is arranged in a housing supported by a frame in the housing, wherein an electric drive motor is integrated into the rotor of the tablet press and the rotor is swivel-mounted on a middle column of the frame, and a control cabinet for the tablet press, which contains among other things a machine computer for the operation of the tablet press, wherein the middle column is supported on a horizontal load-bearing element, which is arranged at a distance above a base plate placed on the floor and the control cabinet is arranged in the interim space between the horizontal load-bearing element and the base plate. | 01-29-2009 |
20080267722 | INDEXABLE MILLING INSERT - An indexable milling insert which is attachable on a rotatable tool holder, preferably under an axial angle different from zero, and which is formed by a trapezoidal insert body, with a substantially planar bearing surface, a further substantially planar surface opposite to the same, and with lateral surfaces formed between the same as well as with opposing cutting edges with associated faces and clearance surfaces adjacent to the same, wherein the faces are formed by one worked-in groove and the clearance surfaces by one lateral surface of the insert body at a time, characterised in that the insert body is provided in the form of an equal-sided lozenge with cutting edges on all the edges of the lozenge, wherein on each flat side, two approximately parallel cutting edges with associated faces are provided at a time, and the pairs of cutting edges of one flat side at a time are associated to different edge pairs of the lozenge. | 10-30-2008 |
20080257689 | APPARATUS FOR CONVEYING AND DEDUSTING OF TABLETS OR SIMILAR PELLETS FROM A TABLET PRESS - An apparatus for conveying and dedusting of tablets or like pellets from a tablet press, with a vertically arranged vibration-screw conveyor, which has a lower inlet and an upper outlet, where the screw conveyor has at least two screw channels, to which, in each case, an inlet and an outlet are assigned. | 10-23-2008 |
20080256910 | APPARATUS FOR THE ELIMINATION OF DUSTS FROM GASES - An apparatus for the elimination of dusts from gases, with a filter arrangement, which is flown through by a loaded volume flow, and a cyclone which is arranged upstream to the filter arrangement, wherein a collector funnel below the filter arrangement forms the cover of the cyclone, wherein a branch stub forming the dust outlet opening of the collector funnel forms the dip pipe of the cyclone and an outlet opening of the cyclone is connected to a dust collector tank arranged under it. | 10-23-2008 |
20080237097 | APPARATUS FOR THE OUTFLOW OF PRESSED ITEMS FROM A ROTARY PRESS - Apparatus for the outflow of pressed items from a rotary press, with a first channel section connecting directly to the rotary press, to which at least two channel sections are connected, to which a deflector is attached, which is swivel mounted at an axis almost vertical to the longitudinal extension of the first and/or second channel section and optionally connects the first channel section with one of the other channel sections and a pivot drive for the deflector below or above the channel sections, characterized in that a bearing pin for the deflector is connected in a torque-proof manner with a channel section and the swivel drive is coupled with the deflector via a magnetic coupling eccentric to the bearing pin. | 10-02-2008 |
20080223009 | FILTERING PLANT FOR REMOVING DUSTS FROM GASES - A filtering plant for removing dusts from gases, with a plurality of filter units, which are parallel connected to a line for crude gas and the outlets thereof are parallel connected to a line for purified gas, wherein an extraction blowing engine is connected to the line for purified gas, further with an apparatus for cleaning the filter units, which has a lower collecting space for the filter cake with a discharge opening with flap on the lower end of the collecting space, characterised in that the dust discharge openings of all the filter units except one are connected to a common collecting main and the collecting main is connected to the crude gas region of the one filter unit. | 09-18-2008 |
20080207342 | ROTATINGLY DRIVABLE CUTTING HEAD - A rotatingly drivable cutting head with at least one cutting insert, which has a cutting profile tool for radial engagement into a workpiece, the one axis of which is in the rotational axis of the cutting head, wherein cutting head and workpiece are moved axially and in the rotational direction with respect to each other, wherein the cutting insert is detachably attachable on a holding element of the cutting head, wherein further the holding element and with it the cutting insect is radially movable between a working position and a releasing position, and with locking means for positioning the cutting insert in the working position and shifting means for shifting the cutting insert from the working position into the releasing position and vice versa, wherein the cutting insert has an axis which runs parallel to the rotational axis in a distance, the cutting insert is attachable on the holding element in at least two rotational positions in an angular distance when it is rotated around its axis, and in every rotational position, a cutting profile tool is in the working position on the cutting insert. | 08-28-2008 |