EP0732193A1 - Dispositif de fixation des matrices dans la table d'une machine de fabrication de comprimés - Google Patents

Dispositif de fixation des matrices dans la table d'une machine de fabrication de comprimés Download PDF

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Publication number
EP0732193A1
EP0732193A1 EP95250058A EP95250058A EP0732193A1 EP 0732193 A1 EP0732193 A1 EP 0732193A1 EP 95250058 A EP95250058 A EP 95250058A EP 95250058 A EP95250058 A EP 95250058A EP 0732193 A1 EP0732193 A1 EP 0732193A1
Authority
EP
European Patent Office
Prior art keywords
die
dies
holders
designed
die table
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
EP95250058A
Other languages
German (de)
English (en)
Other versions
EP0732193B1 (fr
Inventor
Wolfgang Korsch
Peter Sommerfeld
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.)
Korsch AG
Original Assignee
Korsch Pressen 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
Application filed by Korsch Pressen GmbH filed Critical Korsch Pressen GmbH
Priority to EP19950250058 priority Critical patent/EP0732193B1/fr
Priority to DE59506307T priority patent/DE59506307D1/de
Publication of EP0732193A1 publication Critical patent/EP0732193A1/fr
Application granted granted Critical
Publication of EP0732193B1 publication Critical patent/EP0732193B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams

Definitions

  • the invention relates to a device for fastening the matrices in the die table of a tableting machine, in particular a rotary tableting machine, by means of die holders.
  • Modern tableting machines are suitable for pressing a wide variety of types and shapes of tablets. After the production of a batch or several batches of tablets, the pressing tool must be dismantled for the purpose of cleaning and then assembled will. Disassembly is also necessary if the machine is converted from one tablet format to another tablet format. To do this, stamps and dies must be exchanged. Tableting machines are known in which the dies are fixed and locked or detachable by means of die screws which are screwed into the die table radially from the outside. As many die screws as dies are required. The die screws are conical at the front end and engage in circumferential grooves of the dies when screwing in to fix the dies with the conical end.
  • each individual die screw When changing, each individual die screw must be loosened one after the other by hand in order to loosen the dies of the old batch. After removing the old dies and inserting the new dies, all die screws must be tightened individually for fixing and locking. This time-consuming process of changing the dies is unsatisfactory, especially in the case of smaller batches, since the time for changing the dies is synonymous with machine downtime. Especially with modern machines that have a significant investment value, long machine runtimes should be achievable.
  • the object of the invention is therefore to create a device with which both a quick release of the old dies and a quick fixation of the new dies in the die table is possible.
  • FIG. 1 shows a vertical partial section through a rotary tablet machine 12.
  • This consists of a die table 4 which is connected to a rotor 1, which is driven by a drive shaft 13 rotating about a vertical rotor axis 14, and of the upper rotor part 15 and lower rotor part 16 is formed, in which the upper stamp 3 or lower stamp 2 are guided.
  • the upper punch 3 is adjusted by means of a guide bush 26, which is designed with a groove, and a feather key 25.
  • the guide bush 26 of the upper punch 3 is with a fitting 23 with associated screw 24 attached.
  • the lower punch 2 is also adjusted by means of a guide bush 27 and a feather key 25.
  • the lower punch 2 located in the guide bush 27 is fastened by means of a fitting 23 and a screw 24.
  • matrices 10 are arranged uniformly on the pitch circle 17 of the matrix table 4.
  • the matrices 10 with their associated upper punches 3 and lower punches 2 successively arrive at a press station, where the filling material located in the die 10 is pressed into the finished tablet by means of pressure rollers.
  • the press station and pressure rollers are not shown in Fig.1. The same applies to the filling shoes, the task of which is to fill the filling material into the subsequently empty die 10 after the pressing process.
  • Each die 10 consists of a metallic die body 18 and a through opening 19, which forms the shape for pressing the tablet, and has an annular groove 11 on the outer circumference.
  • the die holder 5 is designed as a hydraulic piston 20 with a conical clamping head 21 and is provided with an extending die pin 6 which presses against a spring 8 of a screw plug 7. This is firmly screwed into a radial bore 22 in the die table 4 from the outside.
  • the pressure force of a hydraulic device, not shown, is simultaneously transmitted to the piston-like die holder 5 by means of a pressure feed 9 guided through the rotor 1.
  • the dies 10 are evenly distributed on the pitch circle 17.
  • the die holders 5 are designed as hydraulic pistons 20, at the end of which the die pins 6 are arranged.
  • the conical clamping head 21 of the die holder 5 engages in the ring grooves 11 of the dies 10 when being fixed.
  • Two die holders 5 each wedge a die 10 in such a way that it is secured against vertical and axial displacement during the pressing process. Since a die holder 5 engages in the ring grooves 11 of the dies 10 arranged to the left and right of it, the same number of die holders 5 as dies 10 are required. From the outside, the screw plugs 7 are screwed into the die table 4, which are provided with springs 8.
  • These screw plugs 7 are located in the same radial bores 22 as the associated die holders 5. During the fixing process, the die pins 6 of the die holder 5 press against the springs 8 of the screw plugs 7, so that the springs 8 are compressed after the fixing process. If the dies 10 are to be replaced, the hydraulic device is switched off, so that no more force is exerted on the die holders 5 in the direction of the dies 10 via the pressure feed 9. However, in order to release the dies 10, the die holders 5 must be moved away from the dies 10. The springs 8 of the screw plugs 7, which are compressed during fixation, relax and press the die holder 5 radially inward from the die 10. This happens for all matrices 10 at the same time. The dies 10 can then be removed from the die table 4, the new dies 10 can be inserted and at the same time fixed with the help of the hydraulic device. This simplifies and speeds up the cleaning process of the machines and the change of dies.
  • a further embodiment for the central fastening of the dies 10 consists in the formation of the die holders 5 as cams on an annular disk mounted in the die table 4, which is driven, for example, by a pinion.
  • a further mechanical embodiment is the design of the die holder 5 as a pair of levers which are spread by spring elements and are mounted and pivoted in the die table 4.
  • the levers are actuated by push rods which can be acted upon radially from the inside.
  • the die holder 5 it is also possible to design the die holder 5 as circular segments which can be moved radially from the inside against the die 10.
  • the circle segments are provided with oblique oblong holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
EP19950250058 1995-03-14 1995-03-14 Dispositif de fixation des matrices dans la table d'une machine de fabrication de comprimés Expired - Lifetime EP0732193B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19950250058 EP0732193B1 (fr) 1995-03-14 1995-03-14 Dispositif de fixation des matrices dans la table d'une machine de fabrication de comprimés
DE59506307T DE59506307D1 (de) 1995-03-14 1995-03-14 Vorrichtung zur Befestigung der Matrizen im Matrizentisch von Tablettiermaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19950250058 EP0732193B1 (fr) 1995-03-14 1995-03-14 Dispositif de fixation des matrices dans la table d'une machine de fabrication de comprimés

Publications (2)

Publication Number Publication Date
EP0732193A1 true EP0732193A1 (fr) 1996-09-18
EP0732193B1 EP0732193B1 (fr) 1999-06-30

Family

ID=8221038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950250058 Expired - Lifetime EP0732193B1 (fr) 1995-03-14 1995-03-14 Dispositif de fixation des matrices dans la table d'une machine de fabrication de comprimés

Country Status (2)

Country Link
EP (1) EP0732193B1 (fr)
DE (1) DE59506307D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010015823A1 (fr) * 2008-08-06 2010-02-11 Patheon Uk Limited Fabrication rapide et à bas coût de comprimés à l'aide d'un équipement jetable
CN114364524A (zh) * 2019-09-09 2022-04-15 科施股份公司 用于支撑压片机构件的设备、其用于调整压片机构件的位置的用途和方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3787890A4 (fr) * 2018-05-04 2022-01-19 Raymond A. Virgen Amortisseur de poinçon libérable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989781A (en) * 1958-10-06 1961-06-27 Stokes F J Corp Rotary molding machine
DE1454820A1 (de) * 1964-07-17 1969-03-13 Korsch Spezialfab Emil Vorrichtung zum Befestigen von Matrizen in Rundlauf-Tablettenpressen
DE3003238A1 (de) * 1980-01-30 1981-08-06 Wilhelm Fette Gmbh, 2053 Schwarzenbek Halterung fuer matrizen der matrizenscheibe einer rundlauftablettiermaschine
WO1995019254A1 (fr) * 1994-01-15 1995-07-20 Korsch Pressen Gmbh Dispositif permettant de fixer des matrices de type facon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989781A (en) * 1958-10-06 1961-06-27 Stokes F J Corp Rotary molding machine
DE1454820A1 (de) * 1964-07-17 1969-03-13 Korsch Spezialfab Emil Vorrichtung zum Befestigen von Matrizen in Rundlauf-Tablettenpressen
DE3003238A1 (de) * 1980-01-30 1981-08-06 Wilhelm Fette Gmbh, 2053 Schwarzenbek Halterung fuer matrizen der matrizenscheibe einer rundlauftablettiermaschine
WO1995019254A1 (fr) * 1994-01-15 1995-07-20 Korsch Pressen Gmbh Dispositif permettant de fixer des matrices de type facon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010015823A1 (fr) * 2008-08-06 2010-02-11 Patheon Uk Limited Fabrication rapide et à bas coût de comprimés à l'aide d'un équipement jetable
CN114364524A (zh) * 2019-09-09 2022-04-15 科施股份公司 用于支撑压片机构件的设备、其用于调整压片机构件的位置的用途和方法

Also Published As

Publication number Publication date
DE59506307D1 (de) 1999-08-05
EP0732193B1 (fr) 1999-06-30

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