EP2111972A2 - Poinçon pour une presse rotative - Google Patents

Poinçon pour une presse rotative Download PDF

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Publication number
EP2111972A2
EP2111972A2 EP09004314A EP09004314A EP2111972A2 EP 2111972 A2 EP2111972 A2 EP 2111972A2 EP 09004314 A EP09004314 A EP 09004314A EP 09004314 A EP09004314 A EP 09004314A EP 2111972 A2 EP2111972 A2 EP 2111972A2
Authority
EP
European Patent Office
Prior art keywords
radius
head
height
stamp according
stamp
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.)
Granted
Application number
EP09004314A
Other languages
German (de)
English (en)
Other versions
EP2111972A3 (fr
EP2111972B1 (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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40679454&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2111972(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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
Application granted granted Critical
Publication of EP2111972B1 publication Critical patent/EP2111972B1/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.
  • 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 diameter of the head is smaller than 25 mm, and the transition region is chosen so that its height is smaller than half the height of the cylindrical surface.
  • 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 one embodiment of the invention, the first radius is smaller 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)
  • Powder Metallurgy (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Compressor (AREA)
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 true EP2111972A2 (fr) 2009-10-28
EP2111972A3 EP2111972A3 (fr) 2011-10-05
EP2111972B1 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2269813A3 (fr) * 2009-07-02 2015-01-21 Fette GmbH Poinçon de presse pour une presse rotative
US10343363B2 (en) 2016-07-26 2019-07-09 Fette Engineering GmbH Punch for a rotary press

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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
CN1210142C (zh) * 2001-05-07 2005-07-13 株式会社菊水制作所 回转式压缩成型机
KR20050037555A (ko) * 2002-07-19 2005-04-22 에스엠아이 인코퍼레이티드 소형 정제의 제조방법 및 그 제조장치
DK1782944T3 (da) * 2004-08-26 2014-09-01 Kikusui Seisakusho Ltd Maskine til formning med rotationskompression, som anvender et stempel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2269813A3 (fr) * 2009-07-02 2015-01-21 Fette GmbH Poinçon de presse pour une presse rotative
EP2269813B1 (fr) 2009-07-02 2022-10-12 Fette GmbH Poinçon de presse pour une presse rotative
US10343363B2 (en) 2016-07-26 2019-07-09 Fette Engineering GmbH Punch for a rotary press

Also Published As

Publication number Publication date
DE102008020748B4 (de) 2010-12-30
US8137089B2 (en) 2012-03-20
DE102008020748A1 (de) 2009-10-29
EP2111972A3 (fr) 2011-10-05
US20090269433A1 (en) 2009-10-29
EP2111972B1 (fr) 2015-01-14

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