EP2036710B1 - Rotor pour presse rotative pour comprimés - Google Patents

Rotor pour presse rotative pour comprimés Download PDF

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Publication number
EP2036710B1
EP2036710B1 EP08015921.3A EP08015921A EP2036710B1 EP 2036710 B1 EP2036710 B1 EP 2036710B1 EP 08015921 A EP08015921 A EP 08015921A EP 2036710 B1 EP2036710 B1 EP 2036710B1
Authority
EP
European Patent Office
Prior art keywords
guide
punch
sealing ring
rotor according
bores
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08015921.3A
Other languages
German (de)
English (en)
Other versions
EP2036710A3 (fr
EP2036710A2 (fr
Inventor
Friedrich Meissner
Wolfgang Soltau
Jan Naeve
Peter Lüneburg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fette GmbH
Original Assignee
Fette GmbH
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Filing date
Publication date
Application filed by Fette GmbH filed Critical Fette GmbH
Publication of EP2036710A2 publication Critical patent/EP2036710A2/fr
Publication of EP2036710A3 publication Critical patent/EP2036710A3/fr
Application granted granted Critical
Publication of EP2036710B1 publication Critical patent/EP2036710B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0082—Dust eliminating means; Mould or press ram cleaning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides

Definitions

  • the invention relates to a rotor for a rotary tablet press according to the preamble of claim 1.
  • the typical rotor for a rotary press is composed of a die plate and a lower and an upper punch guide for lower and upper punch, which cooperate with holes in the die plate.
  • the rotor is driven by a suitable drive motor about a vertical axis, and the powdery material filled into the die bores by a filling device is compressed by the punches.
  • the pressing is done in the so-called printing stations, in each of which at least one upper and one lower pressure roller are arranged, which act on the punch heads.
  • the stamps are guided by suitable stamp curves, including the. Ejecting the compacts through the lower punch controlling curves.
  • Such rotors are about out US 5,004,413 .
  • the lower and upper punches usually consist of a shaft, a cooperating with the pressure rollers head and a tool section, which dips into the die holes.
  • the mostly cylindrical shaft is guided in corresponding bores of the punch guides. So that the stamps are in the holes do not rotate, it is also known to provide a key which cooperates with a Pespringututut to prevent rotation of the punches.
  • Such arrangements are known, for example from US Pat. No. 6,926,511 B1 dreary DE 203 04 981 U1 ,
  • the invention has for its object to provide a rotor for a rotary tablet press, in which a simple sealed guide of the ram is made possible.
  • the shanks of the ram are provided in cross section with a non-circular profile, and the cross section of the guide holes is complementary.
  • the cross section may be a rectangle, a triangle or a somehow rounded polygon.
  • the ram shank has smooth surfaces over the circumference, which are easy to seal.
  • the guide holes are formed by guide bushes which are in receiving bores of the punch guides are arranged.
  • the receiving bores can be cylindrical, for example, while the inner cross section of the guide bushes is complementary to the cross section of the ram.
  • the inner profile of guide bushes can be produced with high accuracy, without a significant notch effect on the stamp shaft must be feared. Feather springs and associated screws can be omitted.
  • the guide bushes are made of ceramic. This eliminates any lubrication of the stamp shank. So-called black spots and stamp eaters also do not occur.
  • At least one sealing ring is provided which is arranged at the upper and / or lower end of the guide bores and has an inner circumference complementary to the shaft profile.
  • Such a sealing ring can simultaneously act as a scraper.
  • the sealing ring has a non-circular outer contour and is arranged in a complementary recess of the punch guide. As a result, a rotation of the sealing ring is prevented.
  • the sealing ring can sit on the die plate facing the end of the guide holes in a recess of the punch guide.
  • the sealing ring on the outer circumference has a radial annular rib which is received positively by a complementary groove in the recess.
  • the annular rib may be arranged on a radially yielding portion of the sealing ring.
  • a sealing ring is arranged in each case at both ends of the guide bores
  • the guide bushes extend slightly beyond the guide bore at the end facing away from the die plate.
  • the seal has a cup-shaped portion which is slipped over the guide bushes.
  • the sealing ring has two cone-shaped sealing lips which are spaced apart in the axial direction and extend divergently to the axis of the sealing ring.
  • a further embodiment of the invention provides that the punch heads each have a flattening on the sides facing the adjacent punch heads. Due to the non-circular contour of the rotational position of the ram is fixed. If the heads of the ram on opposite sides provided with flats, it can be ensured with respect to the orientation by the cross section of the punch shaft that the flats respectively in the direction of rotation of the rotor and the adjacent punch head out. This makes it possible, the punch heads very close together. The number of can be arranged on a pitch circle ram can therefore be increased.
  • a rotor 10 of which in Fig. 1 only a section is shown, has an upper punch guide 12 and a lower punch guide 14 and a die plate 16 between the upper and lower punch guide 12, 14.
  • all parts are a one-piece unit. It is understood that it can also be multi-part.
  • the die plate may consist of individual segments.
  • the upper punch guide 12 has receiving bores 18, and the lower punch guide 14 has receiving bores 20.
  • the punch guides 12, 14 lead in pairs upper punch 22 and lower punch 24, which cooperate with die holes 26 of the die plate 16 to compress powdered material in the die holes 26.
  • FIG. 3 Upper and lower punches 22, 24 and guide bushings 28, 30 are shown.
  • the press punches 22, 24 have a head 32, a shank 34 and a tool section 36. Only the tool portion 36 cooperates with the die bore 26 (hereinafter only the upper punch 22 is treated, the lower punch 24 is to be considered in the same way).
  • the head 32 is substantially standardized in its top. It cooperates with pressure rollers, not shown, which press the upper punch 22 into the die bore 26 against the pressing material.
  • the shaft 34 is of non-circular cross-section.
  • Fig. 5 Cross-sectional shapes are shown by way of example.
  • Fig. 5a shows a triangular
  • Fig. 5c a cross section composed of three sections of a circle, the transitions being rounded.
  • the guide bushings 28, 30, which may consist of ceramic material and are glued into the receiving bores 18 and 20 respectively, have a cross-section of the shafts 34 complementary cross-section.
  • the described cross sections therefore determine the rotational position of the punches 22, 24 in the punch guide 12 and 14, respectively.
  • Each punch 22, 24 or each guide bush 28 and 30 is associated with an upper sealing ring 38 and a lower sealing ring 40. In 6 and 7 the sealing ring 40 is shown more clearly.
  • the sealing ring has an inner contour that is approximately contoured Fig. 5c equivalent.
  • the outer contour is square with rounded corners.
  • the sealing ring 40 also has an annular rib 42, which is integrally formed on a radially yielding portion 44 of the sealing ring.
  • the annular rib 42 may, as shown more clearly in FIG Fig. 8 is shown, in a groove 46 of the receiving bore 18, which is cylindrical, are used.
  • the non-circular shape of the sealing ring 40 on the outer circumference which corresponds to a corresponding shape of the receiving groove 46, prevents rotation of the seal 40 in the recess in which it is seated in the punch guide 12 at the end of the receiving bore 18.
  • a further seal 52 is pot-shaped on the side facing the guide bushing 28 and engages over the guide bushing 28, which projects beyond the upper end of the receiving bore 18 by a certain amount. Since also the outer circumference of the guide bush 28 is out of round, prevents the profile, the seal 52 can rotate.
  • Fig. 4 the guide bush 28 and the sealing rings 38, 40 are arranged on the punch 22. However, the sealing rings 38, 40 are shown in an exploded position to better recognize their contour.
  • the punches 22, 24 have opposite flats 56 on the heads 32.
  • the flattenings are as if from Fig. 1 results, in each case to the adjacent ram out. The punches can therefore be brought together very close.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Medicinal Preparation (AREA)

Claims (11)

  1. Rotor pour une presse à comprimés rotative, qui comprend un guide de poinçon supérieur et inférieur (12, 14) pour des poinçons inférieurs et supérieurs (22, 24) qui coopèrent avec des perçages d'un disque de matrice (16) arrangé entre le guide de poinçon supérieur et inférieur (12, 14), les poinçons (22, 24) comprenant des tiges (34) qui sont axialement mobiles dans des alésages de guidage des guides de poinçon (12, 14) et sont faites étanche par un ensemble d'étanchéité, et des moyens agissant entre les tiges (34) et les alésages de guidage qui empêchent une rotation des poinçons presseurs (22, 24) dans les alésages de guidage, caractérisé en ce que les tiges (34) ont un profil non-circulaire en section transversale à travers toute leur longueur, avec des surfaces lisses autour du périmètre, et la section transversale des alésages de guidage est complémentaire, et que l'ensemble d'étanchéité comprend au moins une bague d'étanchéité (38, 40) qui est arrangée sur l'extrémité supérieure et/ou inférieure des alésages de guidage et a un périmètre intérieur complémentaire au profile des tiges.
  2. Rotor selon la revendication 1, caractérisé en ce que les alésages de guidage sont formés par des douilles de guidage (28, 30), qui sont arrangées dans des perçages de réceptacle (18, 20) du guide de poinçons (12, 14).
  3. Rotor selon la revendication 2, caractérisé en ce que les douilles de guidage (28, 30) sont faites en un matériau céramique ou en métal dur.
  4. Rotor selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la bague d'étanchéité (40) a un contour non-circulaire et se trouve dans un évidement complémentaire (54) du guide de poinçon.
  5. Rotor selon la revendication 4, caractérisé en ce que la bague d'étanchéité est arrangée dans un évidement des guides de poinçon sur l'extrémité des alésages de guidage vis-à-vis du disque de matrice.
  6. Rotor selon la revendication 5, caractérisé en ce que la bague d'étanchéité (40) a une nervure annulaire (42) sur son périmètre extérieur, qui est mécaniquement reçue dans une rainure (46) complémentaire dans l'évidement (54).
  7. Rotor selon la revendication 6, caractérisé en ce que la nervure annulaire (42) est arrangé dans une section radialement résiliente (44) de la bague d'étanchéité (40).
  8. Rotor selon l'une quelconque des revendications 1 à 7, caractérisé en ce que une bague d'étanchéité (38, 40) est à chaque fois arrangé sur les deux extrémités des alésages de guidage.
  9. Rotor selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la bague d'étanchéité (38) a une section en forme de pot, qui est passée au-dessus de la douille de guidage (28, 30) dans l'extrémité éloignée du disque de matrice (16) qui fait saillie au-delà du guide de poinçon (12, 14).
  10. Rotor selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la bague d'étanchéité (40) a deux lèvres d'étanchéité en forme de cône annulaire (48, 50), espacées l'une de l'autre dans la direction axiale et qui s'étendent à l'axe de la bague d'étanchéité (40) de manière divergente.
  11. Rotor selon l'une quelconque des revendications 1 à 10, caractérisé en ce que les têtes de poinçon (32) ont chacune à la fois une zone aplatie (56) au côté vis-à-vis des têtes de poinçon avoisinantes.
EP08015921.3A 2007-09-13 2008-09-10 Rotor pour presse rotative pour comprimés Active EP2036710B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007043584A DE102007043584B4 (de) 2007-09-13 2007-09-13 Rotor für eine Rundlauf-Tablettenpresse

Publications (3)

Publication Number Publication Date
EP2036710A2 EP2036710A2 (fr) 2009-03-18
EP2036710A3 EP2036710A3 (fr) 2011-03-09
EP2036710B1 true EP2036710B1 (fr) 2016-07-20

Family

ID=39885146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08015921.3A Active EP2036710B1 (fr) 2007-09-13 2008-09-10 Rotor pour presse rotative pour comprimés

Country Status (3)

Country Link
US (1) US7641465B2 (fr)
EP (1) EP2036710B1 (fr)
DE (1) DE102007043584B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7850884B2 (en) * 2009-04-01 2010-12-14 The Gillette Company Method of compacting material
US7959837B2 (en) * 2009-04-01 2011-06-14 The Gillette Company Method of compacting material
DE102011101288B4 (de) * 2011-05-10 2013-11-14 Fette Compacting Gmbh Verfahren zum Betrieb einer Anlage zur Herstellung von Tabletten sowie entsprechende Anlage
DE102011101289B4 (de) * 2011-05-10 2013-11-14 Fette Compacting Gmbh Stempelanordnung für eine Presse und Presse sowie Rundläuferpresse
USD836142S1 (en) * 2015-06-30 2018-12-18 Iro Co., Ltd. Punch of tableting machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875797A (en) * 1954-06-02 1959-03-03 Changewood Corp Hydraulic molding press
DE1934382U (de) * 1965-12-13 1966-03-10 Festo Maschf Stoll G Kolbenstange mit fuehrung fuer einen in einem pneumatischen oder hydraulischen druckmittel gefuellten arbeitszylinder hin und her gehenden kolben.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068619A (en) * 1935-09-13 1937-01-19 Stokes Machine Co Tablet-making machine
US3318265A (en) * 1964-03-16 1967-05-09 Abbott Lab Tablet punch assembly
DE2424655C3 (de) * 1974-05-21 1979-06-28 Kilian & Co Gmbh, 5000 Koeln Rundlauf tablettenpresse
US4298563A (en) * 1978-10-19 1981-11-03 Ptx-Pentronix, Inc. Apparatus and method for compacting prismatic or pyramidal articles from powder material
DE8815075U1 (fr) * 1988-12-03 1990-04-05 Manesty Machines Ltd., Liverpool, Lancashire, Gb
US6926511B1 (en) * 1999-03-18 2005-08-09 Korsch Pressen Ag Rotary-table press with removable punches
DE19963263C2 (de) * 1999-03-18 2002-05-16 Korsch Pressen Ag Rundlaufpresse mit auswechselbaren Einsatzstempeln
DE20010641U1 (de) * 2000-06-15 2000-08-31 Fette Wilhelm Gmbh Stempel für Rundlaufpresse
DE10064640C2 (de) * 2000-12-22 2003-01-09 Henkel Kgaa Tablettenpreßstempel-Anordnung
DE10159114B4 (de) * 2001-12-01 2004-02-19 Wilhelm Fette Gmbh Rotor für eine Tablettenpresse
DE20205508U1 (de) * 2002-04-09 2002-07-04 Kilian Gmbh & Co Kg Rundlauf-Tablettenpresse mit Stempeldichtungselement und Stempeldichtungselement
DE20304981U1 (de) * 2003-03-26 2004-08-05 Kilian Gmbh & Co. Kg Tablettenpresse und Ölfang- und/oder Dichtelement zur Verwendung an Tablettenpressen
DE102004040163C5 (de) * 2004-08-19 2009-06-18 Fette Gmbh Rundläufertablettenpresse
JP2006212702A (ja) * 2005-01-05 2006-08-17 Kikusui Seisakusho Ltd 粉末圧縮成形機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875797A (en) * 1954-06-02 1959-03-03 Changewood Corp Hydraulic molding press
DE1934382U (de) * 1965-12-13 1966-03-10 Festo Maschf Stoll G Kolbenstange mit fuehrung fuer einen in einem pneumatischen oder hydraulischen druckmittel gefuellten arbeitszylinder hin und her gehenden kolben.

Also Published As

Publication number Publication date
DE102007043584B4 (de) 2010-04-15
DE102007043584A1 (de) 2009-03-19
US7641465B2 (en) 2010-01-05
EP2036710A3 (fr) 2011-03-09
EP2036710A2 (fr) 2009-03-18
US20090074901A1 (en) 2009-03-19

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