EP2796281B1 - Dispositif râcleur pour une presse à comprimés rotative ainsi que rotor et presse à comprimés rotative - Google Patents

Dispositif râcleur pour une presse à comprimés rotative ainsi que rotor et presse à comprimés rotative Download PDF

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Publication number
EP2796281B1
EP2796281B1 EP14161530.2A EP14161530A EP2796281B1 EP 2796281 B1 EP2796281 B1 EP 2796281B1 EP 14161530 A EP14161530 A EP 14161530A EP 2796281 B1 EP2796281 B1 EP 2796281B1
Authority
EP
European Patent Office
Prior art keywords
fluid
scraper
tablet press
rotary tablet
cushion
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
EP14161530.2A
Other languages
German (de)
English (en)
Other versions
EP2796281A1 (fr
Inventor
Sven Kolbe
Alexander Oldenburg
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 Compacting GmbH
Original Assignee
Fette Compacting 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 Fette Compacting GmbH filed Critical Fette Compacting GmbH
Publication of EP2796281A1 publication Critical patent/EP2796281A1/fr
Application granted granted Critical
Publication of EP2796281B1 publication Critical patent/EP2796281B1/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
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/08—Accessory tools, e.g. knives; Mountings therefor
    • 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
    • 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
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds

Definitions

  • the invention relates to a scraper device for a rotary tablet press, comprising a scraper, which is adapted to strip on the top of a relative to the scraper rotating die plate of the rotary tablet press and press material to be pressed, and comprising a force generating device formed thereto is to press the scraper with a predetermined contact force on the top of the die plate.
  • the invention also relates to a rotor for a rotary tablet press and a rotary tablet press.
  • the squeegee is pressed with spring force on the die plate.
  • the force generating device on a suitable spring.
  • the disadvantage is that due to the properties of the spring, in particular its spring constant and its structural arrangement, the spring force is basically fixed. An adaptation of the spring force to different operating and / or installation situations is only with considerable constructive Effort possible.
  • the contact pressure when using a spring is not clearly defined, especially when the operating situation changes.
  • the wiper strip becomes worn, as a result of which the contact pressure on the upper side of the die plate changes. This requires a manual readjustment of the force generator. Such a manual adjustment or a change in the installation situation can lead to undefined changes in the contact pressure.
  • a press device which comprises a filling device with a sealing element, which is intended to prevent leakage of filled in the filling device powder material.
  • the seal member may be pressed onto the die plate of the press by a hollow tube filled with a fluid such as air.
  • the present invention seeks to provide a stripping device, a rotor and a rotary tablet press of the type mentioned, with which a defined contact pressure of the stripping device is present, with a flexible adaptation of the stripping to different operating situations and / or installation situations is possible in a simple manner.
  • the invention solves the problem in that the force generating means comprises a filled with a fluid fluid cushion, which is directly or via at least one transmission element with the scraper in contact to the scraper with the predetermined contact pressure on the top of the Press the die plate.
  • the scraper of the scraper device according to the invention may be a squeegee.
  • the scraper is arranged in a conventional manner stationary in the direction of rotation of the die plate behind the also stationary arranged filling device of the rotary tablet press.
  • the filling device may in particular comprise a so-called filling shoe.
  • the die plate runs along their die holes through, the die holes are filled with the material to be pressed, such as a powder or pellets or the like.
  • At least one wiper edge of the wiper facing the excess material during operation is generally arranged at an angle to the radial direction with respect to the die plate.
  • the scraper can completely strip the material from the die plate. But it is also possible that the material is stripped in an inactive in the subsequent compression edge region of the die plate.
  • the stripping of the excess material can be done in a conventional manner inwards or outwards.
  • the scraper is pressed by a force generating device on top of the rotating die plate.
  • the force-generating device comprises a fluid cushion in which a fluid is under pressure.
  • the fluid cushion presses directly or via at least one transmission element on the scraper and pushes it on the top of the die plate.
  • the contact pressure is generated by the fluid pressure prevailing in the fluid cushion.
  • the fluid cushion in particular has an elastic sheath and expands in accordance with the fluid pressure prevailing in the fluid cushion. This in turn leads to a pressure exerted on the scraper or a contact force exerted on the scraper. As a result, the scraper is again pressed onto the die plate.
  • a constant contact force is generated on the die plate.
  • a defined pressing force is generated in a particularly simple manner by suitable adjustment of the fluid pressure prevailing in the fluid cushion, which can be adapted in a flexible manner to different operating situations and / or installation situations.
  • the fluid pad may be a liquid pad filled with a liquid.
  • the fluid cushion may be a gas cushion filled with a gas.
  • the gas cushion can be an air cushion, in which there is thus air under pressure. So there is a pneumatic pressing of the scraper on the top of the die plate.
  • the fluid cushion can be arranged in a housing, wherein the housing has at least one opening through which the fluid cushion is in contact with the scraper directly or via the at least one transmission element.
  • the housing may for example consist of a metal material or plastic. Via the opening there is a contact between the fluid cushion and the wiper directly or indirectly via one or more transmission elements, whereby the wiper is pressed onto the die plate.
  • one of the at least one opening opposite side of the housing is closed.
  • the corresponding and substantially non-flexible housing wall forms an abutment on which the fluid cushion is supported for exerting the contact pressure on the scraper.
  • the housing may be designed cup-shaped, for example. For example, it can take the form of a hollow quadrant closed on one side.
  • the force-generating device may further comprise a fluid filling device for filling the fluid cushion with fluid, for example gas.
  • the fluid filling device has in particular a control device, by means of which the degree of filling of the fluid cushion with fluid can be controlled.
  • the fluid pad may be a gas or air bag. Accordingly, a gas or air is then filled into the fluid cushion by the fluid filling device.
  • the force-generating device furthermore comprises a pressure-measuring device which measures the fluid pressure prevailing in the fluid cushion, for example gas pressure, directly or indirectly.
  • the fluid pressure prevailing in the fluid cushion allows a direct inference to the contact force exerted by the fluid cushion on the scraper and thus to the contact force with which the scraper is pressed onto the top of the die plate. So it is a particularly simple control of the proper contact pressure possible.
  • the force-generating device may further comprise a fluid control device that controls the fluid filling device depending on measurement results of the pressure measuring device for filling the fluid cushion with fluid, such as gas, that in each case a predetermined fluid pressure prevails in the fluid pad.
  • fluid such as gas
  • the fluid control device controls the fluid filling device depending on measurement results of the pressure measuring device for filling the fluid cushion with fluid, such as gas, that in each case a predetermined fluid pressure prevails in the fluid pad.
  • the fluid control device it is possible in a particularly advantageous manner to regulate the fluid pressure in the fluid cushion by means of the fluid control device to different values, that is to vary, for example, depending on the purpose or location. It is therefore possible in a particularly simple manner to adapt the stripping device on the one hand to different operating situations of the same rotary tablet press. On the other hand, it is possible, the stripper in a simple manner to different installation situations in the same rotary tablet press or to use in different rotary tablet presses adapt with different installation situations. It can be ensured that even with different operating or installation situations, be it in the same or in different rotary tablet presses, the scraper is pressed at any time with the desired contact pressure, for example at any time with the same contact pressure on the die plate.
  • the invention also relates to a rotor for a rotary tablet press, comprising a rotatably driven die plate with a plurality of die holes, as well as a punch recording and a lower punch receptacle for rotating with the die plate upper punch and lower punch of the rotary tablet press, and comprising at least a stripping device according to the invention.
  • the invention also relates to a rotary tablet press, comprising a rotatably driven die plate with a plurality of die holes, as well as a punch recording and a lower punch recording in which rotating with the die plate upper punch and lower punch are performed for pressing in at least one relative to the die plate stationary arranged filling device of the rotary tablet press in the die holes filled material, a die bore is assigned in each case an upper punch and a lower punch, further comprising a rotary drive for rotating the die plate and the Oberstempelability and Unterstkovfact, and further comprising at least one inventive stripping.
  • the rotary tablet press comprises, in a manner known per se, at least one pressing station with upper and / or lower pressure rollers, in which the pressing of the material takes place. Furthermore, the rotary tablet press comprises in a conventional manner guide means for guiding the web of the upper and lower punches, for example so-called guide curves. In addition, includes the rotary tablet press in a conventional manner a likewise arranged relative to the die plate stationary ejector device in which the pressed products, such as tablets, are ejected.
  • the at least one filling device is arranged in a manner known per se in the direction of rotation of the die plate in front of the at least one scraper of the at least one stripping device, so that material filled in the at least one filling device can be scraped off by the subsequent scraper in the course of rotation of the die plate.
  • the at least one pressing station of the rotary tablet press is arranged downstream of the wiper in a manner known per se in the direction of rotation of the die plate. If a plurality of filling devices are provided, a plurality of stripping devices can likewise be provided correspondingly, wherein one stripping device is assigned to one filling device in each case. Accordingly, a plurality of the filling or stripping each associated pressing stations can then be provided. All this is known per se and is therefore not explained further.
  • inventive rotary tablet press has a rotationally driven by an unspecified rotary drive annular die plate 10 with a plurality of arranged on a pitch circle die holes 12.
  • the rotary tablet press also has a punch not shown recording and also not shown Unterstempelability, in the not shown Upper and lower stamp are performed.
  • the upper punch recording and the lower punch recording and with them the upper and lower punch are also driven by the rotary drive, so that the upper and lower punches, which are each paired with a die bore 12, rotate with the die plate.
  • a filling device in which material to be pressed, for example a tablet powder 16, is filled into the die bores 12.
  • the filling device 14 is arranged stationary, so that the die plate 10 rotates with its die holes 12 under the filling device 14, in Fig. 1 counterclockwise.
  • the filling device 14 is designed as a so-called filling shoe, so that the die bores 12 are completely filled in a manner known per se with the powder 16 to be pressed.
  • the filling device 14 is an in Fig. 1 not shown pressing station downstream with upper and lower pressure rollers, in which the filled into the die holes 12 powder is pressed through the upper and lower punches.
  • the finished tablets 18 are ejected in an ejector device 20 from the rotary tablet press.
  • excess tablet powder 22 which is not to be supplied to the compression.
  • a stripping device is provided, from the in Fig. 1 only one wiper 24, in the present case a wiper strip 24 can be seen.
  • the wiper strip 24 is explained in more detail below on the bottom of the Die plate 10 is pressed so that the located on the top of the wiper strip 24 through the rotating die plate 10 located excess powder 22 in Fig. 1 is stripped inwardly into an edge region of the die plate 10, which is not active in the course of compression.
  • the excess tablet powder 24 can thus be supplied to the filling device 14 for reuse.
  • the rotary tablet press shown in detail corresponds largely to the one in Fig. 1 shown rotary tablet press.
  • the rotary tablet press of Fig. 2 differs only in terms of the arrangement of the wiper blade 24 of the rotary tablet press the Fig. 1 ,
  • the wiper strip 24 is in Fig. 2 arranged in such a way and is pressed onto the top of the die plate 10 such that the excess powder 22 in this embodiment is completely stripped off the die plate 10 to the outside.
  • the stripping device according to the invention will be explained in more detail.
  • This can both in the rotary tablet press the Fig. 1 as well as in the rotary tablet press the Fig. 2 be used.
  • the die plate can again be seen in sections.
  • the arrow 26 indicates the direction of rotation of the die plate.
  • the trapezoidal scraper strip can be seen in section.
  • the squeegee 24 is pressed with a contact force F on the top 30 of the die plate 10.
  • the wiper blade 24 forms a barrier for located on the die plate 10 excess tablet powder 22.
  • the gas cushion 32 is arranged in a hollow cuboid housing 34, for example made of metal, which at its in Fig. 3 lower side is open. About this opening, the gas cushion 32 is in contact with the wiper blade 24. The opposite end of the opening of the housing 34, however, is closed. It forms an abutment for the gas cushion 32.
  • the gas cushion 32 there is a gas pressure through which the squeegee 24 is pressed with the contact pressure 28 on the top 30 of the die plate 10.
  • the force-generating device further comprises a fluid control device 36, in the present case a gas control device 36, with integrated fluid filling device, in the present case gas filling device, including control device.
  • the gas filling device is connected via a gas line 38 to the interior of the gas cushion 32.
  • the force-generating device furthermore comprises a pressure-measuring device 40, which measures the gas pressure prevailing in the gas cushion 32 via a measurement of the gas pressure in the gas line 38.
  • the gas control device 36 controls the gas filling device and in particular its control device as a function of measurement results of the pressure measuring device 40 for filling the gas cushion with gas, that in the gas cushion 32 in each case a predetermined constant gas pressure P prevails.
  • This constant gas pressure P ensures that the wiper strip 24 is pressed onto the upper side 30 of the die plate 10 at any time with a constant and defined pressure force 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (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 (7)

  1. Dispositif de stripage pour une presse à comprimés rotative, comportant un racleur (24) qui est conçu à enlever du matériau présent sur la face supérieure (30) d'un disque à matrices (10) tournant par rapport au racleur (24) et destiné à être comprimé, et comportant une unité de génération de force, qui est conçue à pousser le racleur (24) sur la face supérieure (30) du disque à matrices (10) avec une pression de contact prédéfinie, l'unité de génération de force comportant un coussin à fluide (32) rempli d'un fluide qui est directement ou via un élément de transmission en contact avec le racleur (24) afin de pousser le racleur (24) sur la face supérieure (30) du disque à matrices (10) avec une pression de contact prédéfinie, caractérisé en ce que l'unité de génération de force comporte en outre un dispositif de mesure de pression (40), qui mesure de façon directe ou indirecte la pression du fluide existant dans le coussin à fluide (32).
  2. Dispositif de stripage selon la revendication 1, caractérisé en ce que le coussin à fluide est un coussin à gaz (32), rempli d'un gaz.
  3. Dispositif de stripage selon l'une quelconque des revendications précédentes, caractérisé en ce que le coussin à fluide (32) est arrangé dans un boîtier (34), le boîtier (34) ayant au moins une ouverture à travers laquelle le coussin à fluide (32) est directement ou via l'au moins un élément de transmission en contact avec le racleur (24).
  4. Dispositif de stripage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de génération de force comporte en outre un dispositif de remplissage avec fluide pour remplir le coussin à fluide (32) avec fluide.
  5. Dispositif de stripage selon la revendication 4, caractérisé en ce que l'unité de génération de force comporte en outre un dispositif de régulation du fluide (36), qui commande le dispositif de remplissage avec fluide pour remplir le coussin à fluide (32) avec fluide, en fonction de résultats de mesure du dispositif de mesure de pression (40), tellement qu'il y a une pression prédéfinie du fluide dans le coussin à fluide (32).
  6. Rotor pour une presse à comprimés rotative, comportant un disque à matrices (10) pouvant être entraîné en rotation, avec une pluralité d'alésages de matrice (12) et avec un logement de poinçons supérieurs et un logement de poinçons inférieurs pour des poinçons supérieurs et poinçons inférieurs circulants avec le disque à matrices (10) de la presse à comprimés rotative, et comportant au moins un dispositif de stripage selon une des revendications 1 à 5.
  7. Presse à comprimés rotative, comportant un disque à matrices (10) pouvant être entraîné en rotation, avec une pluralité d'alésages de matrice (12) et avec un logement de poinçons supérieurs et un logement de poinçons inférieurs dans lesquels des poinçons supérieurs et poinçons inférieurs circulants avec le disque à matrices (10) sont guidés pour compacter du matériau rempli dans des alésages de matrice (12) dans un dispositif de remplissage (14) de la presse à comprimés rotative agencé de manière stationnaire par rapport au disque à matrices (10), un poinçon supérieur et un poinçon inférieur étant à la fois associé a chaque alésage de matrice (12), comportant en outre un entraînement rotatif pour tourner le disque à matrices (10) et le logement de poinçons supérieurs et le logement de poinçons inférieurs, et comportant en outre au moins un dispositif de stripage selon une des revendications 1 à 5.
EP14161530.2A 2013-04-23 2014-03-25 Dispositif râcleur pour une presse à comprimés rotative ainsi que rotor et presse à comprimés rotative Active EP2796281B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013006950.5A DE102013006950B3 (de) 2013-04-23 2013-04-23 Abstreifvorrichtung für eine Rundläufer-Tablettenpresse sowie Rotor und Rundläufer-Tablettenpresse

Publications (2)

Publication Number Publication Date
EP2796281A1 EP2796281A1 (fr) 2014-10-29
EP2796281B1 true EP2796281B1 (fr) 2018-09-26

Family

ID=50345947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14161530.2A Active EP2796281B1 (fr) 2013-04-23 2014-03-25 Dispositif râcleur pour une presse à comprimés rotative ainsi que rotor et presse à comprimés rotative

Country Status (6)

Country Link
US (1) US9561634B2 (fr)
EP (1) EP2796281B1 (fr)
JP (1) JP5985532B2 (fr)
CN (1) CN104118132B (fr)
DE (1) DE102013006950B3 (fr)
IN (1) IN2014MU01317A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017107634U1 (de) * 2017-12-15 2018-12-19 Korsch Ag Abstreifvorrichtung zur Reinigung eines Bauteils in einer Tablettiermaschine
DE102018122394B4 (de) * 2018-09-13 2020-09-10 Fette Compacting Gmbh Rotor für eine Rundläuferpresse
US11303642B2 (en) 2019-06-03 2022-04-12 The Toronto-Dominion Bank Dynamic management of consent and permissioning between executed applications and programmatic interfaces
USD948049S1 (en) * 2019-07-18 2022-04-05 Anke Young Die

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US3577842A (en) * 1968-07-04 1971-05-11 Matsushita Electric Ind Co Ltd Apparatus for compression molding a powder within a container
GB1279950A (en) * 1968-07-25 1972-06-28 Manesty Machines Rotary tabletting machines
DE2264247A1 (de) * 1972-12-30 1974-07-11 Krupp Gmbh Verfahren zur herstellung von formlingen
DE3624623A1 (de) * 1985-09-11 1987-03-19 Werner Stoehner Abstreifvorrichtung zur reinigung von foerderbandanlagen
WO1988000916A1 (fr) 1986-08-08 1988-02-11 Richard Thomas Owen Couper Appareil racleur pour convoyeur
JPH046399U (fr) * 1990-04-26 1992-01-21
JP2500196B2 (ja) * 1994-03-03 1996-05-29 株式会社菊水製作所 回転式粉末圧縮成形機
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JP2000301391A (ja) 1999-04-16 2000-10-31 Sumitomo Heavy Ind Ltd 回転式粉末圧縮成形機における粉末供給量定量化方法
DE10318529B4 (de) * 2003-04-24 2006-01-12 Fette Gmbh Verfahren zum Betrieb einer Rundläufer-Tablettiermaschine und Rundläufer-Tablettiermaschine
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DE102007060335B4 (de) * 2007-12-14 2010-06-10 Fette Gmbh Ablaufvorrichtung für Preßlinge einer Rundläuferpresse
JP5347149B2 (ja) * 2009-04-07 2013-11-20 株式会社菊水製作所 回転式粉体圧縮成形機
JP5847477B2 (ja) * 2011-07-29 2016-01-20 株式会社菊水製作所 粉体圧縮成形機
CN202685350U (zh) * 2012-11-02 2013-01-23 山东中科凤祥生物工程有限公司 一种用于粘性粉料压制成型的压块机

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Also Published As

Publication number Publication date
DE102013006950B3 (de) 2014-08-07
US9561634B2 (en) 2017-02-07
CN104118132B (zh) 2018-12-04
JP5985532B2 (ja) 2016-09-06
CN104118132A (zh) 2014-10-29
JP2014213383A (ja) 2014-11-17
EP2796281A1 (fr) 2014-10-29
US20140314895A1 (en) 2014-10-23
IN2014MU01317A (fr) 2015-09-04

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