EP2111972B1 - Poinçon pour une presse rotative - Google Patents

Poinçon pour une presse rotative Download PDF

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Publication number
EP2111972B1
EP2111972B1 EP09004314.2A EP09004314A EP2111972B1 EP 2111972 B1 EP2111972 B1 EP 2111972B1 EP 09004314 A EP09004314 A EP 09004314A EP 2111972 B1 EP2111972 B1 EP 2111972B1
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EP
European Patent Office
Prior art keywords
punch
radius
height
head
diameter
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
EP09004314.2A
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German (de)
English (en)
Other versions
EP2111972A2 (fr
EP2111972A3 (fr
Inventor
Jürgen Schikowski
Friedrich Meissner
Jan Naeve
Harald Römer
Reinhard Wagner
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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Publication date
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Application filed by Fette GmbH filed Critical Fette GmbH
Publication of EP2111972A2 publication Critical patent/EP2111972A2/fr
Publication of EP2111972A3 publication Critical patent/EP2111972A3/fr
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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
    • B30B15/0076—Noise or vibration isolation 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
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams

Definitions

  • the invention relates to a stamp for a rotary press according to claim 1.
  • Rotary presses for the production of tablets and similar compacts have lower and upper punches, which cooperate with die bores in a die plate to process gefiilltes powder into compacts.
  • the molds with which the dies interact are referred to as dies, which are mounted as separate sleeve-like inserts in holes in the die plate.
  • dies which are mounted as separate sleeve-like inserts in holes in the die plate.
  • the use of segmented die disks has the advantage that when changing in the shape of the compact, removal of the die Matrices and the installation of new matrices can be omitted.
  • the matrices occupy a relatively large amount of space so that they limit the number of mold holes on a given pitch circle. Naturally, the number of mold holes in a die plate without
  • Press punches of the type mentioned have a punch head and a shaft.
  • the stamp head has at the top a mirror surface, which interact with pressure rollers in the rotary press.
  • the diameter of the mirror surface determines the pressure holding time of the ram, ie at a given speed, the time in which the ram interact with the powder to be pressed.
  • the press die heads also have a cylindrical surface, and between this and the mirror surface a rounded transition is arranged, wherein the transition has a relatively large radius to the underrun of the pressure rollers this only gradually to the effect to come.
  • At the bottom of the punch heads go in a mostly conical section in the shaft.
  • the mass of the dies of a rotary press and the associated inertia is a limiting factor for the engine speed and also crucial for the wear of punch heads and with these cooperating curves.
  • there is an unfavorable interaction between the pressure roller and the stamp head due to uneven transition of the pressure roller from one to the next stamp head. This causes a considerable noise emission and wear on punch and pressure roller.
  • the geometric design and dimensions of punch heads for rotary presses are normalized (DIN ISO 18084: 2006-09).
  • the diameter of the head which is determined by the cylindrical surface, is then either 25.27 or 31.6 mm, the diameter of the mirror surface is optionally 9.6 or 16 mm, the diameter of the shaft is 19 or 25.35 mm and the height of the head is 8.15 mm.
  • US-A-2004/0056375 are a method and an apparatus for the production of miniature tablets, as well as a stamp according to the preamble of claim 1, known. Up to 35 stations can be used on a four-sided press to produce 840,000 tablets per minute at 100 revolutions per minute.
  • the invention has for its object to provide a stamp for a rotary press, which achieves a smaller size and thus a smaller distance of the stamp is possible.
  • the noise emission should be able to be reduced.
  • the radius of the transition region between mirror surface and cylindrical surface is relatively small compared to the normalized stamp head. In the latter, this radius is 16 mm. According to the invention, the first radius is less than 14 mm, preferably in the range of 9 to 11 mm.
  • a very small radius of 0.8 mm is provided between the rounded transition and the cylindrical surface.
  • the second radius corresponds to at least one fifth of the size of the first radius, preferably a quarter of the first radius.
  • the second radius is according to another embodiment of the invention 2 to 3 mm, preferably 2.5 mm.
  • the height of the cylindrical surface corresponds to at least half the height of the punch head.
  • the ratio of the height of the cylinder surface to the total height of the punch head is slightly less than 0.5, z. B. 0.47 - 0.48. (If the above and below of the height of the punch head is mentioned, then this means the entire height of the head from the mirror surface to the shaft).
  • the diameter of the shaft of the stamp according to the invention is relatively small. Conventionally, it is, as already mentioned, either 19 or 25.35 mm. According to one embodiment of the invention, the diameter of the shaft is ⁇ 19 mm. Preferably, the diameter is less than 14 mm, preferably between 11 and 13 mm.
  • the ratio diameter shaft to diameter mirror surface is less than 1.7, preferably about 1.5.
  • the punch according to the invention is preferably applicable to segmented die plates having mold holes without mold inserts (dies). According to one embodiment of the invention for this purpose, it is provided that the center distance of the punches on the pitch circle of the form of holes is less than 20 mm.
  • the number of stations on a particular pitch circle is significantly increased. Furthermore, the mass of the stamp is reduced. This reduces also the wear on punch heads and curves. The exact radius transition of the punch head not only allows the significant mass reduction, but also a more uniform transition of the pressure roller from one to the next stamp head. This reduces the noise emission as well as the wear on punches and pressure rollers.
  • Fig. 1 For example, some punches 10 are shown with a shaft 12 and a punch head 14. They are, what is not described and shown in detail, arranged in a punch guide of a rotor of a rotary press. Such rotary presses are well known, so that reference may be made thereto.
  • the punches 10 cooperate with mold bores of a die plate, also not shown, which is rotated together with the punches 10 about a vertical axis.
  • at least one pressure roller cooperates with the punch heads 14 to press the punch shanks or the press insert of the punch shafts into the die holes in order to press powder received therein into a compact. This too is not shown and is assumed to be known.
  • Fig. 1 how out Fig. 1 Furthermore, recognizable, the punch heads 14 have a very small distance from each other.
  • the center distance of the punch shafts 12 and the punch heads 14 is in Fig. 1 denoted by X.
  • Stamp head 14 and stamp shaft 12 are provided with dimensions. The dimensions are in millimeters.
  • the stamp head 14 has an upper mirror surface 16 with a diameter of 8 mm.
  • the stamp head 14 further has a cylindrical surface 20 with a diameter of 19 mm.
  • a first transition region 22 is provided with a radius of 10 mm.
  • Another transition region 24 has a radius of 2.5 mm.
  • a conical transition region 28 is formed with a cone angle of 30 °.
  • the height of the cylindrical surface 20 is 5.1 mm and the height of the punch head 14 10.7 mm.
  • the diameter of the shaft is 12 mm.
  • the two radii of the transition regions 22 and 24 are relatively small and allow a small size for the punch head 14.
  • the radius transition of the transition regions 24, 22 allows an optimum transition of the pressure roller from one stamp head to the next, so that the wear and the noise emission is minimized.
  • the stamp head allows for the Figures 1 and 2 a small size and thus a reduced mass.
  • the diameter of the mirror surface 16 moves within the scope of the usual, to keep the pressure holding time the same.
  • the height of the cylindrical surface 20 is approximately equal to conventional dimensions.
  • Significantly reduced is the height of the two transition regions 24, 22, resulting in the smaller size of the head.
  • the diameter of the shaft 12 is reduced compared to conventional Stempelfabften, so that over this mass is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Compressor (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (12)

  1. Poinçon pour une presse rotative, présentant une tige (12) et une tête de poinçon (14), dans lequel la tête de poinçon (14) présente une surface réfléchissante (16), une surface cylindrique (20) et une première et une deuxième région de transition arrondie (22, 24) entre la surface réfléchissante (16) et la surface cylindrique (20), dans lequel la première région de transition (22) présente un premier rayon et la deuxième région de transition (24) présente un deuxième rayon, dans lequel le premier rayon est plus grand que le deuxième rayon, et dans lequel la tête de poinçon (14) présente en outre une région de transition conique (28) entre la surface cylindrique (20) et la tige (12), dans lequel le diamètre de la tête de poinçon (14) est inférieur à 25 mm, caractérisé en ce que le premier rayon de la première région de transition (22) est choisi de manière à ce que sa hauteur soit inférieure à la moitié de la hauteur de la surface cylindrique (20), le premier rayon étant inférieur à 14 mm, et le deuxième rayon mesurant au moins un cinquième de la taille du premier rayon.
  2. Poinçon selon la revendication 1, caractérisé en ce que le premier rayon est compris entre 9 et 11 mm.
  3. Poinçon selon la revendication 1 ou 2, caractérisé en ce que le deuxième rayon mesure un quart du premier rayon.
  4. Poinçon selon la revendication 3, caractérisé en ce que le deuxième rayon mesure environ 2 à 3 mm, de préférence 2,5 mm.
  5. Poinçon selon l'une des revendications 1 à 4, caractérisé en ce que la hauteur de la surface cylindrique (20) mesure au moins quasiment la moitié de la hauteur de la tête de poinçon (14).
  6. Poinçon selon la revendication 5, caractérisé en ce que le rapport de la hauteur de la surface cylindrique (20) à la hauteur totale de la tête de poinçon (14) est supérieur à 0,5.
  7. Poinçon selon l'une des revendications 1 à 6, caractérisé en ce que la région de transition conique (28) vers la tige (12) mesure au maximum un quart de la hauteur totale de la tête de poinçon (14).
  8. Poinçon selon l'une des revendications 1 à 7, caractérisé en ce que le diamètre de la tige (12) est inférieur à 19 mm.
  9. Poinçon selon la revendication 8, caractérisé en ce que le diamètre est inférieur à 14 mm, de préférence compris entre 11 et 13 mm.
  10. Poinçon selon l'une des revendications 1 à 9, caractérisé en ce que le rapport diamètre/tige (12) à diamètre/surface réfléchissante (16) est inférieur à 1,7, de préférence environ égal à 1,5.
  11. Poinçon selon l'une des revendications 1 à 10, caractérisé par son utilisation sur un disque à matrice constitué de segments individuels et présentant des perçages de forme sans insert de forme, c'est-à-dire des matrices.
  12. Poinçon selon la revendication 11, caractérisé en ce que l'espacement axial des poinçons (10) sur le cercle partiel des perçages de forme est inférieur à 20 mm.
EP09004314.2A 2008-04-23 2009-03-26 Poinçon pour une presse rotative Active EP2111972B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008020748A DE102008020748B4 (de) 2008-04-23 2008-04-23 Stempel für eine Rundläuferpresse

Publications (3)

Publication Number Publication Date
EP2111972A2 EP2111972A2 (fr) 2009-10-28
EP2111972A3 EP2111972A3 (fr) 2011-10-05
EP2111972B1 true EP2111972B1 (fr) 2015-01-14

Family

ID=40679454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09004314.2A Active EP2111972B1 (fr) 2008-04-23 2009-03-26 Poinçon pour une presse rotative

Country Status (3)

Country Link
US (1) US8137089B2 (fr)
EP (1) EP2111972B1 (fr)
DE (1) DE102008020748B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3275639A1 (fr) 2016-07-26 2018-01-31 Fette Compacting GmbH Tampon pour une presse rotative
WO2022188965A1 (fr) 2021-03-10 2022-09-15 Gea Process Engineering Nv Dispositif de compression
DE202022107077U1 (de) 2022-12-19 2024-03-21 Romaco Kilian Gmbh Stempel für Rundläufer-Tablettenpresse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009031367B3 (de) * 2009-07-02 2010-09-02 Fette Gmbh Pressstempel für eine Rundläuferpresse

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744799A (en) 1953-10-12 1956-02-15 Evans Medical Supplies Ltd Improvements relating to the production of coated tablets
DE1783564U (de) 1958-12-11 1959-02-19 Korsch Spezialfab Emil Stempelfuehrung an rundlauf - tabletten - komprimiermaschinen.
JPH066147B2 (ja) * 1991-08-08 1994-01-26 株式会社菊水製作所 回転式粉末成形機の杵
DE19502596C2 (de) * 1995-01-28 1997-08-28 Fette Wilhelm Gmbh Meßgerät und Rechner zur Überprüfung der auf einer Rundläuferpresse hergestellten Tabletten der laufenden Produktion
US6106262A (en) * 1997-12-25 2000-08-22 Metropolitan Computing Corporation Press simulation apparatus
WO2002090098A1 (fr) * 2001-05-07 2002-11-14 Kikusui Seisakusho Ltd. Machine de moulage a compression de type rotatif
CN1668439A (zh) * 2002-07-19 2005-09-14 Smi有限公司 用于制造微型片剂的方法与装置
US7581941B2 (en) * 2004-08-26 2009-09-01 Kikusui Seisakusho Ltd. Punch, and rotary compression molding machine using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3275639A1 (fr) 2016-07-26 2018-01-31 Fette Compacting GmbH Tampon pour une presse rotative
DE102016113724A1 (de) 2016-07-26 2018-02-01 Fette Compacting Gmbh Stempel für eine Rundläuferpresse
DE102016113724B4 (de) 2016-07-26 2019-01-17 Fette Compacting Gmbh Stempel für eine Rundläuferpresse
WO2022188965A1 (fr) 2021-03-10 2022-09-15 Gea Process Engineering Nv Dispositif de compression
DE202022107077U1 (de) 2022-12-19 2024-03-21 Romaco Kilian Gmbh Stempel für Rundläufer-Tablettenpresse

Also Published As

Publication number Publication date
US8137089B2 (en) 2012-03-20
US20090269433A1 (en) 2009-10-29
DE102008020748A1 (de) 2009-10-29
EP2111972A2 (fr) 2009-10-28
EP2111972A3 (fr) 2011-10-05
DE102008020748B4 (de) 2010-12-30

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