EP1331086B1 - Punch set and/or die set for a tabletting machine - Google Patents

Punch set and/or die set for a tabletting machine Download PDF

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Publication number
EP1331086B1
EP1331086B1 EP02028957A EP02028957A EP1331086B1 EP 1331086 B1 EP1331086 B1 EP 1331086B1 EP 02028957 A EP02028957 A EP 02028957A EP 02028957 A EP02028957 A EP 02028957A EP 1331086 B1 EP1331086 B1 EP 1331086B1
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EP
European Patent Office
Prior art keywords
die
compaction
rams
dies
information
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.)
Expired - Lifetime
Application number
EP02028957A
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German (de)
French (fr)
Other versions
EP1331086A2 (en
EP1331086A3 (en
Inventor
Detlev Scholz
Jürgen Hinzpeter
Ulrich Zeuschner
Ingo Schmidt
Jan Naeve
Reno Schiebe
Michael Gruber
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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 EP1331086A2 publication Critical patent/EP1331086A2/en
Publication of EP1331086A3 publication Critical patent/EP1331086A3/en
Application granted granted Critical
Publication of EP1331086B1 publication Critical patent/EP1331086B1/en
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
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • 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
    • B30B11/005—Control arrangements
    • 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
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form

Definitions

  • the invention relates to a system for a tabletting machine according to the preamble of patent claim 1.
  • Tableting machines in the form of concentric presses have a die plate driven about a vertical axis, which receives dies arranged in a circle in corresponding die bores.
  • pairs of rams run through cams and pressure rollers as they rotate with the rotor.
  • the upper punches in the matrices they are dosed by means of a suitable filling device with a corresponding powder. Subsequently, by pressing the press dies together, the material is pressed to a desired thickness (web height).
  • the control of the tableting machine and its monitoring i. the control of the speed, the filling level control, the pressing force of the punches, the control of the web height, the sorting out and the drawing of samples, etc. are carried out via a process computer.
  • stamp set and the matrices which are known to be complementary
  • different tablet shapes can be produced.
  • the data carrier may be, for example, a so-called chip in which electronically predetermined information is stored, such as identification of the type of pressing tool, previous service life, remaining service life or even tolerances of the set (critical dimensioning).
  • the described identifier can then with the help of a reader, which is attached to the location of the tableting machine, read and automatically transferred to the process computer.
  • the process computer takes into account the information in the selection of the program for the operation of the tabletting machine.
  • the invention has for its object to provide a set of press dies and / or dies, in which the exchange of individual dies or dies does not lead to an impairment of the quality of the tablets to be produced.
  • the first identifier relates to the type of the pressing tool or the die.
  • an identifier need only be provided for a punch of a stamp set.
  • an individual identifier is added for each ram or die.
  • Each ram or die therefore, within a set has an individual identifier, which alone distinguishes this stamp.
  • the critical dimensioning of the individual pressing punch or die is added. In the case of press dies, above all, their length is of importance because the web height of a tablet or the pressing force is influenced by the length of the press die.
  • this new press die is also provided with a code and contains an indication of his exact measured length.
  • the information also includes an indication of the service life of the ram. If it is a newly manufactured press die, it has the operating time zero, which is included accordingly in its coding.
  • each position of a die or a stamp pair is also identified with respect to its location in the rotor of the tabletting machine. This is usually done with the help of the process computer. An identifier with regard to the position of the punch and / or die is not made or is required. The further information regarding the operating time is important insofar as usually punch or die have only a predetermined maximum life, which is dependent on the conditions of use, and after the expiry of the punches must be replaced. By constantly reading the information from all the press dies of a set, it is automatically possible to find out at which position of the rotor of the tableting machine a press die or a pair of press dies or a die must be exchanged.
  • the inventively made identification of press dies or dies can be done optically, for example by means of a laser or punching as a matrix code.
  • a so-called transponder which is attached, for example, in a recess of the press ram or die.
  • the identification or the reading of the identifier is then analog, ie by optical means or electronically.
  • the information is typically read by the user of the tableting machine.
  • the required reader which is equipped with a corresponding read head, is connected to the process computer via lines, so that the corresponding data of the replaced press die or the exchanged die are automatically processed and taken into account for the control of the machine.
  • the reading head is arranged in the tableting machine so that upon rotation of the rotor accommodating the press die, all information about its axis is read from the press dies and / or the dies and transmitted to the process computer. Errors due to incorrect reading or transfer to the process computer when replacing the punch and / or die can no longer occur.
  • a transponder is probably the rotational position of the ram in its recording relative to the read head uncritical.
  • the coding is on attached optical way, it may be advantageous under certain circumstances, if this is applied several times on the circumference, for example, the shaft of the press ram so that the rotational position is irrelevant. It would be alternatively conceivable to provide a rotation of the ram, if this is essential for readability.
  • the information stored in the press dies and the matrices are, as mentioned, processed internally using the machine computer. They can also be processed externally and linked and evaluated with other machine and batch parameters.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Numerical Control (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Description

Die Erfindung bezieht sich auf ein System für eine Tablettiermaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a system for a tabletting machine according to the preamble of patent claim 1.

Tablettiermaschinen in Form von Rundlaufpressen weisen eine um eine vertikale Achse angetriebene Matrizenscheibe auf, die auf einem Kreis angeordnete Matrizen in entsprechenden Matrizenbohrungen aufnimmt. Synchron mit der Scheibe laufen Pressstempelpaare um, die durch Steuerkurven und Druckrollen betätigt werden, wenn sie mit dem Rotor umlaufen. Vor dem Einführen der Oberstempel in die Matrizen werden diese mittels einer geeigneten Füllvorrichtung mit einem entsprechenden Pulver dosiert befüllt. Anschließend erfolgt durch Aufeinanderzubewegen der Pressstempel ein Verpressen des Materials auf eine gewünschte Dicke (Steghöhe).Tableting machines in the form of concentric presses have a die plate driven about a vertical axis, which receives dies arranged in a circle in corresponding die bores. In synchronism with the disc, pairs of rams run through cams and pressure rollers as they rotate with the rotor. Before inserting the upper punches in the matrices they are dosed by means of a suitable filling device with a corresponding powder. Subsequently, by pressing the press dies together, the material is pressed to a desired thickness (web height).

Die Steuerung der Tablettiermaschine und ihre Überwachung, d.h. die Steuerung der Drehzahl, die Füllhöhenregelung, die Presskraft der Stempel, die Regelung der Steghöhe, das Aussortieren und das Ziehen von Proben usw. erfolgt über einen Prozessrechner.The control of the tableting machine and its monitoring, i. the control of the speed, the filling level control, the pressing force of the punches, the control of the web height, the sorting out and the drawing of samples, etc. are carried out via a process computer.

Durch Änderung des Pressstempelsatzes und der Matrizen, die bekanntlich komplementär sind, lassen sich unterschiedliche Tablettenformen produzieren. Aus EP 0 620 108 A1 ist, gemäß dem Oberbegriff des Anspruchs 1, bekannt geworden, bei einem Satz von Pressstempeln mindestens einen Pressstempel am Schaft mit einer Ausnehmung zu versehen, in der ein Datenträger aufgenommen ist. Der Datenträger kann z.B. ein so genannter Chip sein, in dem elektronisch vorgegebene Informationen gespeichert sind, wie z.B. Kennung des Presswerkzeugtyps, bisherige Einsatzdauer, Reststandzeit oder auch Toleranzen des Satzes (kritische Bemessung). Die beschriebene Kennung kann dann mit Hilfe eines Lesegerätes, das am Ort der Tablettiermaschine angebracht ist, gelesen und automatisch in den Prozessrechner übertragen werden. Der Prozessrechner berücksichtigt dabei die Informationen bei der Auswahl des Programms für den Betrieb der Tablettiermaschine.By changing the stamp set and the matrices, which are known to be complementary, different tablet shapes can be produced. From EP 0 620 108 A1, according to the preamble of claim 1, it has become known, in the case of a set of press dies, to provide at least one press ram on the shank with a recess in which a data carrier is received. The data carrier may be, for example, a so-called chip in which electronically predetermined information is stored, such as identification of the type of pressing tool, previous service life, remaining service life or even tolerances of the set (critical dimensioning). The described identifier can then with the help of a reader, which is attached to the location of the tableting machine, read and automatically transferred to the process computer. The process computer takes into account the information in the selection of the program for the operation of the tabletting machine.

Eine Identifizierung eines einzelnen Pressstempels oder einer einzelnen Matrize ist im bekannten Fall nicht möglich. Im Betrieb einer Tablettiermaschine kommt häufiger vor, dass einzelne Matrizen und/oder Pressstempel ausgetauscht werden müssen. Ohne besondere Vorkehrungen kann dadurch die gleichbleibende Tablettenqualität gefährdet sein.An identification of a single punch or a single die is not possible in the known case. During operation of a tableting machine, it is more common for individual dies and / or press dies to be replaced. Without special precautions, the consistent tablet quality can be endangered.

Aus GB 2 276 476 A ist bekannt geworden, auf Pressstempeln von Tablettiermaschinen einen Bar-Code anzubringen, der eine Identifizierung des Pressstempels mit Hilfe eines Lesegerätes ermöglicht.It has become known from GB 2 276 476 A to apply a bar code to press punches of tabletting machines, which makes it possible to identify the press ram with the aid of a reading device.

Aus Patent Abstracts of Japan 010, nr. 187 (M-493), 02. Juli 1986 (1986/07/02) und Zeichen JP 61030605 A (Toyota Motor Corp.), 12. Februar 1986 (1986/02/12) ist bekannt geworden, Matrizen im Rotor einer Tabletten-Rundlaufpresse einer bestimmten Position zuzuordnen, indem die Matrizenscheibe, in welcher die Matrizen angeordnet sind, mit einer Kennung versehen wird. Dadurch ist es möglich, den Ort bestimmter Matrizen zu identifizieren, damit mit Hilfe einer geeigneten Befiillvorrichtung während eines Umlauf unterschiedliche Matrizen mit unterschiedlichem Pulver befüllt werden können.From Patent Abstracts of Japan 010, no. 187 (M-493), 2 July 1986 (1986/07/02) and JP 61030605 A (Toyota Motor Corp.), February 12, 1986 (1986/02/12) has become known matrices in the rotor of a tablet Rounding press assign a specific position by the die plate, in which the matrices are arranged, is provided with an identifier. This makes it possible to identify the location of certain matrices, so that with the help of a suitable Befiillvorrichtung during a cycle different matrices can be filled with different powder.

Aus WO 01/64365 A ist bekannt geworden, unterschiedliche Formwerkzeug einer Kaltformmaschine mit einer ablesbaren Kodierung zu versehen.From WO 01/64365 A has become known to provide different mold a cold forming machine with a readable coding.

Der Erfindung liegt die Aufgabe zugrunde, einen Satz von Pressstempeln und/oder Matrizen zu schaffen, bei dem der Austausch einzelner Stempel oder Matrizen nicht zu einer Beeinträchtigung der Qualität der herzustellenden Tabletten führt.The invention has for its object to provide a set of press dies and / or dies, in which the exchange of individual dies or dies does not lead to an impairment of the quality of the tablets to be produced.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.

Bei der Erfindung sind alle Pressstempel und/oder Matrizen eines Satzes mit einer Kodierung versehen. Diese Kodierung weist mindestens folgende Informationen auf:

  • Kennung des Satzes von Pressstempeln bzw. Matrizen
  • individuelle Kennung jedes Pressstempels oder jeder Matrize
  • Daten zur kritischen Bemessung des Pressstempels oder der Matrize
  • Betriebsdauer.
In the invention, all press punches and / or dies of a set are provided with a coding. This coding has at least the following information:
  • Identification of the set of press dies or dies
  • individual identifier of each ram or die
  • Data for critical dimensioning of the ram or die
  • Operating time.

Die erste Kennung betrifft den Typ des Presswerkzeugs bzw. der Matrize. Insoweit besteht Übereinstimmung mit dem vorstehend beschriebenen bekannten Satz von Pressstempeln. Im bekannten Fall braucht eine solche Kennung lediglich bei einem Pressstempel eines Stempelsatzes vorgesehen zu werden. Bei der Erfindung tritt jedoch für jeden Pressstempel bzw. jede Matrize eine individuelle Kennung hinzu. Jeder Pressstempel bzw. jede Matrize hat mithin innerhalb eines Satzes eine individuelle Kennung, die allein diesen Stempel auszeichnet. Als weitere Information tritt hinzu die kritische Bemessung des individuellen Pressstempels bzw. der Matrize. Bei Pressstempeln ist vor allen Dingen ihre Länge von Bedeutung, weil die Steghöhe einer Tablette bzw. die Presskraft durch die Länge des Pressstempels beeinflusst wird. Wird zum Beispiel bei einem im Betrieb befindlichen Pressstempelsatz ein Pressstempel ausgetauscht und durch einen vom Hersteller zur Verfügung gestellten anderen Pressstempel ersetzt, ist dieser neue Pressstempel ebenfalls mit einer Kodierung versehen und enthält eine Angabe über seine genau vermessene Länge. Durch Gegenüberstellung der einzelnen Stempellängen ist eine Neusortierung der Zuordnung von Ober- und Unterstempel möglich, um die gewünschten Parameter für die Tablette konstant zu halten.The first identifier relates to the type of the pressing tool or the die. In that regard, there is agreement with the known set of press dies described above. In the known case, such an identifier need only be provided for a punch of a stamp set. In the invention, however, an individual identifier is added for each ram or die. Each ram or die, therefore, within a set has an individual identifier, which alone distinguishes this stamp. As further information, the critical dimensioning of the individual pressing punch or die is added. In the case of press dies, above all, their length is of importance because the web height of a tablet or the pressing force is influenced by the length of the press die. If, for example, a press die is replaced by a press die set in operation and replaced by another press die provided by the manufacturer, this new press die is also provided with a code and contains an indication of his exact measured length. By juxtaposing the individual punch lengths, a re-sorting of the assignment of upper and lower punch is possible in order to keep the desired parameters for the tablet constant.

Schließlich enthält die Information auch eine Angabe über die Betriebsdauer des Pressstempels. Falls es sich um einen neu gefertigten Pressstempel handelt, hat er die Betriebsdauer Null, was entsprechend in seiner Kodierung aufgenommen wird.Finally, the information also includes an indication of the service life of the ram. If it is a newly manufactured press die, it has the operating time zero, which is included accordingly in its coding.

Für die Matrizen gilt Entsprechendes, wie zu den Pressstempeln ausgeführt. Es versteht sich, dass jede Position einer Matrize bzw. eines Stempelpaares auch bezüglich seines Ortes im Rotor der Tablettiermaschine identifiziert ist. Dies geschieht üblicherweise mit Hilfe des Prozessrechners. Eine Kennung im Hinblick auf die Position von Pressstempel und/oder Matrize wird nicht vorgenommen bzw. ist nicht erforderlich. Die weitere Information bezüglich der Betriebsdauer ist insofern von Bedeutung, als üblicherweise Pressstempel bzw. Matrizen nur eine vorgegebene maximale Standzeit aufweisen, die abhängig von den Einsatzbedingungen ist, und nach deren Ablauf die Pressstempel ausgewechselt werden müssen. Durch ständig wiederholtes Ablesen der Informationen aus allen Pressstempeln eines Satzes lässt sich automatisch in Erfahrung bringen, an welcher Position des Rotors der Tablettiermaschine ein Pressstempel oder ein Pressstempelpaar bzw. eine Matrize ausgewechselt werden muss.The same applies to the matrices, as stated for the press dies. It is understood that each position of a die or a stamp pair is also identified with respect to its location in the rotor of the tabletting machine. This is usually done with the help of the process computer. An identifier with regard to the position of the punch and / or die is not made or is required. The further information regarding the operating time is important insofar as usually punch or die have only a predetermined maximum life, which is dependent on the conditions of use, and after the expiry of the punches must be replaced. By constantly reading the information from all the press dies of a set, it is automatically possible to find out at which position of the rotor of the tableting machine a press die or a pair of press dies or a die must be exchanged.

Die erfindungsgemäß vorgenommene Kennung von Pressstempeln bzw. Matrizen kann auf optischem Wege, beispielsweise mit Hilfe eines Lasers oder durch Stanzen als Matrixcode erfolgen. Alternativ kann auch ein so genannter Transponder verwendet werden, der z.B. in einer Ausnehmung des Pressstempels bzw. der Matrize angebracht ist. Die Identifizierung bzw. das Ablesen der Kennung erfolgt dann analog, d.h. auf optischem Wege oder elektronisch.The inventively made identification of press dies or dies can be done optically, for example by means of a laser or punching as a matrix code. Alternatively, it is also possible to use a so-called transponder, which is attached, for example, in a recess of the press ram or die. The identification or the reading of the identifier is then analog, ie by optical means or electronically.

Das Lesen der Informationen erfolgt typischerweise beim Verwender der Tablettiermaschine. Das erforderliche Lesegerät, das mit einem entsprechenden Lesekopf ausgerüstet ist, ist über Leitungen mit dem Prozessrechner verbunden, sodass automatisch die entsprechenden Daten des ausgewechselten Pressstempels oder der ausgewechselten Matrize verarbeitet und für die Steuerung der Maschine berücksichtigt werden.The information is typically read by the user of the tableting machine. The required reader, which is equipped with a corresponding read head, is connected to the process computer via lines, so that the corresponding data of the replaced press die or the exchanged die are automatically processed and taken into account for the control of the machine.

Der Lesekopf ist in der Tablettiermaschine so angeordnet, dass bei einer Drehung des die Pressstempel aufnehmenden Rotors um seine Achse alle Informationen von den Pressstempeln und/oder den Matrizen abgelesen und auf den Prozessrechner übertragen werden. Irrtümer aufgrund falschen Ablesens oder Übertragens auf den Prozessrechner beim Auswechseln von Pressstempel und/oder Matrize können nicht mehr auftreten. Bei der Verwendung eines Transponders ist vermutlich die Drehlage des Pressstempels in seiner Aufnahme relativ zum Lesekopf unkritisch. Falls jedoch die Kodierung auf optischem Wege angebracht ist, kann es unter Umständen von Vorteil sein, wenn diese auf dem Umfang z.B. des Schaftes des Pressstempels mehrfach aufgebracht ist, sodass die Drehlage keine Rolle spielt. Es wäre aber alternativ denkbar, eine Drehbarkeit der Pressstempel vorzusehen, falls dies für die Ablesbarkeit wesentlich ist.The reading head is arranged in the tableting machine so that upon rotation of the rotor accommodating the press die, all information about its axis is read from the press dies and / or the dies and transmitted to the process computer. Errors due to incorrect reading or transfer to the process computer when replacing the punch and / or die can no longer occur. When using a transponder is probably the rotational position of the ram in its recording relative to the read head uncritical. However, if the coding is on attached optical way, it may be advantageous under certain circumstances, if this is applied several times on the circumference, for example, the shaft of the press ram so that the rotational position is irrelevant. It would be alternatively conceivable to provide a rotation of the ram, if this is essential for readability.

Die in den Pressstempeln und den Matrizen gespeicherten Informationen werden, wie erwähnt, intern mit Hilfe des Maschinenrechners verarbeitet. Sie können auch extern verarbeitet werden und mit anderen Maschinen- und Chargenparametern verknüpft und ausgewertet werden.The information stored in the press dies and the matrices are, as mentioned, processed internally using the machine computer. They can also be processed externally and linked and evaluated with other machine and batch parameters.

Schließlich ist auch möglich, die Stempelzuordnung beim Auswechseln eines oder mehrerer Stempel zu ändern und Ober- und Unterstempel so zueinander anzuordnen, dass Abweichungen von der Ideallänge des Stempels kompensiert werden.Finally, it is also possible to change the stamp assignment when replacing one or more stamps and to arrange upper and lower punches to each other so that deviations from the ideal length of the punch can be compensated.

Claims (4)

  1. A system for a tabletting machine with at least one rotary press, several sets of compaction rams and several sets of dies for a selective usage of the sets in the rotary press and a reading device for information stored for the compaction rams of the sets of compaction rams, said information relating to a label for the set of compaction rams and to data on a critical dimension of the compaction rams, characterized in that all compaction rams and all dies of the sets contain the following information:
    - a label for the set of compaction rams and die-plates
    - an individual label for each compaction ram or die-plate
    - the data concerning critical dimensions of the compaction rams and die-plates
    - the service life
    and a reading head is provided which is connected to a machine computer of the rotary press and disposed such that upon rotation of the rotor carrying the compaction rams about its axis, all of the information of the compaction rams and the dies is read.
  2. The system of claim 1, characterized in that the information is adapted to be erased and/or overwritten.
  3. The system of claim 1 or 2, characterized in that encoding is accomplished by means of a transponder which is mounted in a recess of the compaction ram or die-plate.
  4. The system of claim 1, characterized in that encoding is accomplished by inscribing the compaction rams or die-plates by means of a laser or punching die.
EP02028957A 2002-01-25 2002-12-24 Punch set and/or die set for a tabletting machine Expired - Lifetime EP1331086B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10202820 2002-01-25
DE10202820A DE10202820C1 (en) 2002-01-25 2002-01-25 Set of punches and/or dies for tablet presses is provided with encoded information covering at least the identity of the set, the identity of each punch or die, and their critical dimensions

Publications (3)

Publication Number Publication Date
EP1331086A2 EP1331086A2 (en) 2003-07-30
EP1331086A3 EP1331086A3 (en) 2003-12-17
EP1331086B1 true EP1331086B1 (en) 2006-09-13

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Application Number Title Priority Date Filing Date
EP02028957A Expired - Lifetime EP1331086B1 (en) 2002-01-25 2002-12-24 Punch set and/or die set for a tabletting machine

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US (1) US7125234B2 (en)
EP (1) EP1331086B1 (en)
DE (2) DE10202820C1 (en)

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Publication number Publication date
DE50208128D1 (en) 2006-10-26
US20030143300A1 (en) 2003-07-31
DE10202820C1 (en) 2003-03-13
EP1331086A2 (en) 2003-07-30
EP1331086A3 (en) 2003-12-17
US7125234B2 (en) 2006-10-24

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