EP1171284B1 - Method for briquetting metal chips and briquetting press - Google Patents

Method for briquetting metal chips and briquetting press Download PDF

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Publication number
EP1171284B1
EP1171284B1 EP00934886A EP00934886A EP1171284B1 EP 1171284 B1 EP1171284 B1 EP 1171284B1 EP 00934886 A EP00934886 A EP 00934886A EP 00934886 A EP00934886 A EP 00934886A EP 1171284 B1 EP1171284 B1 EP 1171284B1
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EP
European Patent Office
Prior art keywords
press
nominal
metal chips
length
briquette
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
EP00934886A
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German (de)
French (fr)
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EP1171284A1 (en
Inventor
August Van Der Beek
Michael Schaaf
Walter Fischer
Harald Pechtel
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Metso Lindemann GmbH
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Metso Lindemann GmbH
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Publication of EP1171284A1 publication Critical patent/EP1171284A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
    • B30B9/3078—Presses specially adapted for particular purposes for baling; Compression boxes therefor with precompression 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
    • B30B11/005—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/32—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars
    • B30B9/327—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars for briquetting scrap metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00—Presses
    • Y10S100/903—Pelleters
    • Y10S100/906—Reciprocating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49751—Scrap recovering or utilizing
    • Y10T29/49753—Metalworking to consolidate scrap
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • Y10T29/49771—Quantitative measuring or gauging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • Y10T29/49778—Method of mechanical manufacture with testing or indicating with aligning, guiding, or instruction
    • Y10T29/4978—Assisting assembly or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53678—Compressing parts together face to face

Definitions

  • the invention relates to a method for briquetting metal chips and a Briquetting press to carry out the process.
  • the possibly double-acting briquetting presses on the one hand produces a compact which has a particularly high compression, that of the actual metal density comes close and on the other hand achieves a high power throughput, so that a Optimal between high density and high performance is achieved.
  • Compared to the single-sided presses can also have longer briquettes be produced because the theoretically still feasible stroke lengths are practical mechanical engineering and manufacturing must be kept limited.
  • EP-A-0 367 859 a method and a Briquetting press for the production of dimensionally stable briquettes from chip, fibrous, dusty or sheet-like pressed material is known, after which the pressed material first fed to a pre-compression piston and from this in a Receiving chamber is pre-compressed and at right angles to it moving plunger is further compressed in a molding box.
  • This invention provides that the exact detection of End position of the plunger or pre-compressor piston the fluctuations compensate almost completely in the pressed material and at the same time the intended one Let the drive power of the press be used with high efficiency.
  • US-A-5,326,511 teaches one similar to the aforementioned document Solution, being in the synopsis of the characteristics of this genus of Presses arranged on the principle of perpendicular to each other Pre-compressors and final compressors work, there are no solutions for that in a press bushing against each other, a completely represent another type of press with other functional processes.
  • the invention is based on the object, while maintaining the initially advantageous functional sequence described above, of specifying a method in which a higher mass throughput of metal chips to be pressed is possible by utilizing the achievable desired length of the briquette by means of improved metering of the metal chips for a maximum filling volume in the press bushing. Furthermore, there is the task of equipping a briquetting press for carrying out the method with suitable technical means which bring about an improved metering of the metal chips.
  • the invention aims to produce stable briquettes.
  • the invention is intended to relate exclusively to the type of press refer to only one press bush with opening for the radially assigned Dosing device with tamper, which is also a closing device for the opening is in the press bush, two guided in this press bush Press ram with piston rods and one of these assemblies and associated Have the frame, frame or housing that receives the pressure generator.
  • FIG. 1 shows a schematic illustration a double-acting briquetting press, each with two rams 1, 2, piston rods 3, 4 and measuring devices 5, 6, but the invention is also based on single-acting, i.e. equipped with a press ram, a piston rod and a measuring device Briquetting presses applicable.
  • the briquetting press is a dosing device Upstream 9, of which the metal chips by means of a rammer 8 a press bush 11 are supplied, in which, through the interaction of the press rams 1, 2 the compact 12 is formed as a briquette.
  • a control circuit 15 belonging to the briquetting press consists of the measuring devices 5, 6, a logic module 7, a controller 13 and actuators 10, 17 (Fig. 2).
  • FIG. 2 the schematically represented functions of compact density 16.1, Press length 16.2, press pressure 16.3 and supply quantity 17.1 and press pressure 17.2 regulated.
  • the compact length L achieved is measured by means of the measuring devices 5, 6 integrated on the piston rods 5, 6, this measured value is compared with a target value L target and then a difference value ⁇ certainly.
  • the amount or mass of the metal chips to be fed from the metering device 9 is defined according to the desired length L target of the compact 12 , the fill level is then set in the metering device 9 and the corresponding amount or mass is supplied by the tamper 9. This process can be repeated until the final pressure P max or the required pressure P erf and the target value L should have reached the length of the briquette or compact 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Control Of Presses (AREA)
  • Wire Bonding (AREA)

Abstract

A method and a briquetting press for briquetting metal chips, wherein stable briquettes/pressed component are produced. The actual length (L<SUB>act</SUB>) of the pressed component is obtained by applying pressure (P<SUB>max</SUB>/P<SUB>req</SUB>) using at least one pressing ram ( 1, 2 ) and measuring the length with a measuring device ( 5, 6 ). The measured value is compared to a desired nominal value (L<SUB>nom</SUB>) and a difference value (□) is subsequently determined.

Description

Technisches GebietTechnical field

Die Erfindung betrifft ein Verfahren zur Brikettierung von Metallspänen und eine Brikettierpresse zur Durchführung des Verfahrens.The invention relates to a method for briquetting metal chips and a Briquetting press to carry out the process.

Stand der TechnikState of the art

Es sind schon Brikettierpressen gemäß DE-A-40 39 788 bekannt geworden, in denen die Verpressung der Metallspäne mittels mindestens eines Preßstempels in einer Preßbuchse, der die Metallspäne über eine radial zur Preßbuchse zugeordnete Dosiereinrichtung mit einem Stampfer zugeführt werden, zu Briketts erfolgt. Der Verfahrensablauf dabei ist wie folgt:

  • Stampfer vorfahren, Füllen und Verschließen der Preßbuchse,
  • Preßstempel vorfahren und Förderung der Metallspäne in den Preßabschnitt der Preßbuchse,
  • Druckbeaufschlagung der Metallspäne durch mindestens einen Preßstempel bis zur Erreichung des Enddruckes Pmax bzw. erforderlichen Druckes Perf,
  • ggf. Zurückfahren eines zweiten Preßstempels und Ausstoßen des fertigen Preßlings als Brikett durch den ersten Preßstempel und
  • ersten Preßstempel zurückfahren und ggf. zweiten Preßstempel vorfahren in die Ausgangsposition.
Briquetting presses according to DE-A-40 39 788 have already become known in which the metal chips are pressed into briquettes by means of at least one press ram in a press bush, to which the metal chips are fed via a metering device assigned to the press bush with a tamper. The procedure is as follows:
  • Drive the rammer forward, fill and close the press bushing,
  • Move the ram up and convey the metal chips into the press section of the press bush,
  • Pressurization of the metal chips by at least one press ram until the final pressure P max or the required pressure P erf is reached ,
  • if necessary retracting a second ram and ejecting the finished compact as a briquette through the first ram and
  • Retract the first ram and, if necessary, advance the second ram to the starting position.

Gegenüber den herkömmlichen Brikettierpressen wird mit den eingangs charakterisierten, ggf. doppeltwirkenden Brikettierpressen einerseits ein Preßling erzeugt, der eine besonders hohe Verdichtung aufweist, die der eigentlichen Metalldichte nahekommt und andererseits ein hoher Leistungsdurchsatz erzielt, so daß ein Optimum zwischen hoher Dichte und hoher Leistung erreicht wird. Gegenüber den einseitig wirkenden Pressen können darüber hinaus größere Brikettlängen hergestellt werden, da die theoretisch noch ausführbaren Hublängen praktisch maschinenbau- und fertigungsseitig begrenzt gehalten werden müssen.Compared to conventional briquetting presses, the possibly double-acting briquetting presses on the one hand produces a compact which has a particularly high compression, that of the actual metal density comes close and on the other hand achieves a high power throughput, so that a Optimal between high density and high performance is achieved. Compared to the single-sided presses can also have longer briquettes be produced because the theoretically still feasible stroke lengths are practical mechanical engineering and manufacturing must be kept limited.

Weiterhin sind gemäß der EP-A-0 367 859 ein Verfahren sowie eine Brikettierpresse zur Herstellung von formbeständigen Briketts aus span-, faser-, staub- oder blattförmigem Preßgut bekannt, wonach das Preßgut zunächst einem Vorverdichterkolben zugeführt und von diesem in einer Aufnahmekammer vorverdichtet wird und von einem hierzu rechtwinklig bewegten Preßkolben in einem Formkasten weiterverdichtet wird.Furthermore, according to EP-A-0 367 859 a method and a Briquetting press for the production of dimensionally stable briquettes from chip, fibrous, dusty or sheet-like pressed material is known, after which the pressed material first fed to a pre-compression piston and from this in a Receiving chamber is pre-compressed and at right angles to it moving plunger is further compressed in a molding box.

Diese Erfindung sieht vor, daß sich durch die exakte Erfassung der Endposition des Preßkolbens bzw. Vorverdichterkolbens die Schwankungen im Preßgut nahezu vollständig ausgleichen und zugleich die vorgesehene Antriebsleistung der Presse bei hohem Wirkungsgrad nutzen lassen.This invention provides that the exact detection of End position of the plunger or pre-compressor piston the fluctuations compensate almost completely in the pressed material and at the same time the intended one Let the drive power of the press be used with high efficiency.

Die Erkenntnisse aus dieser technischen Lehre sind jedoch auf in axialer Richtung doppeltwirkenden Brikettierpressen nicht übertragbar.The knowledge gained from this technical teaching, however, is based on axial Non-transferable towards double-acting briquetting presses.

Weiterhin lehrt die US-A-5,326,511 eine der vorgenannten Schrift ähnliche Lösung, wobei in der Zusammenschau der Merkmale dieser Gattung von Pressen, die nach dem Prinzip von rechtwinklig zueinander angeordneten Vorverdichter und Endverdichter arbeiten, sich keine Lösungsansätze für die in einer Preßbuchse gegeneinander wirkenden Preßstempeln, die eine völlig andere Gattung von Pressen mit anderen Funktionsabläufen darstellen, finden. Furthermore, US-A-5,326,511 teaches one similar to the aforementioned document Solution, being in the synopsis of the characteristics of this genus of Presses arranged on the principle of perpendicular to each other Pre-compressors and final compressors work, there are no solutions for that in a press bushing against each other, a completely represent another type of press with other functional processes.

Bei einer doppeltwirkenden Brikettierpresse mit in einer Preßbuchse wirkenden Preßstempeln ist es vielmehr problematisch, die mögliche und zulässige Länge des Preßlings zum Brikett mit äußerst geringer Toleranz zu erreichen. Dabei ist dann nachteilig, daß, obwohl der maximale Preßdruck wirkt, das maximal mögliche Füllvolumen in der Preßbuchse hinsichtlich der Länge des Briketts nicht ausnutzbar ist.With a double-acting briquetting press with those working in a press bush Rather, it is problematic to stamp the possible and permissible length of the To achieve compacts for briquette with extremely low tolerance. Then it is disadvantageous that, although the maximum pressure acts, the maximum possible Filling volume in the press bushing cannot be used with regard to the length of the briquette is.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, unter Beibehaltung des eingangs dargestellten prinzipiell vorteilhaften Funktionsablaufes ein Verfahren vorzugeben, bei dem durch Ausnutzung der erreichbaren Sollänge des Briketts mittels verbesserter Dosierung der Metallspäne für ein maximales Füllvolumen in der Preßbuchse ein höherer Massedurchsatz von zu verpressenden Metallspänen möglich wird.
Ferner besteht die Aufgabe, eine Brikettierpresse zur Durchführung des Verfahrens mit geeigneten technischen Mitteln auszustatten, die eine verbesserte Dosierung der Metallspäne bewirken.The invention is based on the object, while maintaining the initially advantageous functional sequence described above, of specifying a method in which a higher mass throughput of metal chips to be pressed is possible by utilizing the achievable desired length of the briquette by means of improved metering of the metal chips for a maximum filling volume in the press bushing.
Furthermore, there is the task of equipping a briquetting press for carrying out the method with suitable technical means which bring about an improved metering of the metal chips.

Insgesamt zielt die Erfindung darauf, stabile Briketts zu erzeugen.Overall, the invention aims to produce stable briquettes.

Dabei soll sich die Erfindung ausschließlich auf die Gattung von Pressen beziehen, die nur eine Preßbuchse mit Öffnung für die radial zugeordnete Dosiereinrichtung mit Stampfer, der zugleich Verschlußorgan für die Öffnung in der Preßbuchse ist, weiterhin zwei in dieser Preßbuchse geführte Preßstempel mit Kolbenstangen und ein diese Baugruppen sowie zugehörige Druckerzeuger aufnehmendes Gestell, Rahmen oder Gehäuse aufweisen. The invention is intended to relate exclusively to the type of press refer to only one press bush with opening for the radially assigned Dosing device with tamper, which is also a closing device for the opening is in the press bush, two guided in this press bush Press ram with piston rods and one of these assemblies and associated Have the frame, frame or housing that receives the pressure generator.

Erfindungsgemäß wird die Aufgabe verfahrensgemäß durch die Merkmale gemäß den Ansprüchen 1 bis 6 gelöst. Zur Durchführung des Verfahrens wird eine Brikettierpresse gemäß den Merkmalen des Anspruches 7 vorgeschlagen.According to the invention, the object is achieved according to the method by the features according to claims 1 to 6 solved. To carry out the process, a Briquetting press proposed according to the features of claim 7.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

In den Zeichnungen zeigen

Fig. 1
das Erfindungsprinzip, dargestellt an dem Schema einer doppelt wirkenden Brikettierpresse mit Regelkreis und
Fig. 2
ein Regelkreisschema gemäß Fig. 1.
Show in the drawings
Fig. 1
the principle of the invention, illustrated on the scheme of a double-acting briquetting press with control circuit and
Fig. 2
2 shows a control circuit diagram according to FIG. 1.

Bester Weg zur Ausführung der ErfindungBest way to carry out the invention

Entsprechend einem Ausführungsbeispiel zeigt Fig. 1 in schematischer Darstellung eine doppeltwirkende Brikettierpresse mit je zwei Preßstempeln 1, 2, Kolbenstangen 3, 4 und Meßeinrichtungen 5, 6, jedoch ist die Erfindung auch auf einfach wirkende, d.h. mit je einem Preßstempel, einer Kolbenstange und einer Meßeinrichtung ausgestatteten Brikettierpressen anwendbar. Der Brikettierpresse ist eine Dosiereinrichtung 9 vorgeordnet, von der die Metallspäne mittels eines Stampfers 8 einer Preßbuchse 11 zugeführt werden, in der durch das Zusammenwirken der Preßstempel 1, 2 der Preßling 12 als Brikett geformt wird.According to an exemplary embodiment, FIG. 1 shows a schematic illustration a double-acting briquetting press, each with two rams 1, 2, piston rods 3, 4 and measuring devices 5, 6, but the invention is also based on single-acting, i.e. equipped with a press ram, a piston rod and a measuring device Briquetting presses applicable. The briquetting press is a dosing device Upstream 9, of which the metal chips by means of a rammer 8 a press bush 11 are supplied, in which, through the interaction of the press rams 1, 2 the compact 12 is formed as a briquette.

Ein zur Brikettierpresse gehörender Regelkreis 15 besteht aus den Meßeinrichtungen 5, 6, einem Logikmodul 7, einem Regler 13 und Stellgliedern 10, 17 (Fig. 2). A control circuit 15 belonging to the briquetting press consists of the measuring devices 5, 6, a logic module 7, a controller 13 and actuators 10, 17 (Fig. 2).

Gemäß Fig. 2 werden die schematisch dargestellten Funktionen Preßlingdichte 16.1, Preßlinglänge 16.2, Preßdruck 16.3 und Zufuhrmenge 17.1 sowie Preßdruck 17.2 geregelt.According to FIG. 2, the schematically represented functions of compact density 16.1, Press length 16.2, press pressure 16.3 and supply quantity 17.1 and press pressure 17.2 regulated.

Durch Druckbeaufschlagung mittels der Preßstempel 1, 2 in der Preßbuchse 11 wird der Preßling 12 nach dem Verfahrensablauf

  • Stampfer 9 vorfahren, Füllen der Preßbuchse 11 mit Metallspänen über die radial zugeordnete Dosiereinrichtung 9 und Verschließen der Preßbuchse 11,
  • Preßstempel 1, 2 vorfahren und Förderung der Metallspäne in den Preßabschnitt der Preßbuchse,
  • Druckbeaufschlagung der Metallspäne durch die Preßstempel 1, 2 gemeinsam bis zur Erreichung des Enddruckes Pmax bzw. erforderlichen Druckes Perf,
  • Zurückfahren der Preßstempel 1, 2 und Ausstoßen des fertigen Preßlings 12
hergestellt.By applying pressure by means of the press rams 1, 2 in the press bush 11, the compact 12 becomes after the process
  • Advance the tamper 9, fill the press bush 11 with metal chips via the radially assigned metering device 9 and close the press bush 11,
  • Move the ram 1, 2 forward and convey the metal chips into the press section of the press bush,
  • Pressurization of the metal chips by the press rams 1, 2 together until the final pressure P max or the required pressure P erf is reached ,
  • Retracting the press rams 1, 2 and ejecting the finished compact 12
produced.

Erfindungsgemäß wird nun bei der Druckbeaufschlagung Pmax/Perf durch die Preßstempel 1, 2 die erreichte Preßlinglänge List mittels der auf den Kolbenstangen 5, 6 integrierten Meßeinrichtungen 5, 6 gemessen, dieser Meßwert mit einem Sollwert Lsoll verglichen und danach ein Differenzwert Δ bestimmt. Entsprechend diesem Differenzwert wird die Menge bzw. Masse der aus der Dosiereinrichtung 9 zuzuführenden Metallspäne nach der zu erreichenden Sollänge Lsoll des Preßlings 12 definiert, danach das Füllmaß in der Dosiereinrichtung 9 eingestellt und die entsprechende Menge bzw. Masse durch den Stampfer 9 zugeführt. Dieser Ablauf kann solange wiederholt werden, bis der Enddruck Pmax bzw. erforderliche Druck Perf und der Sollwert Lsoll der Länge des Briketts bzw. Preßlings 12 erreicht sind.According to the invention, when the pressure is applied P max / P erf by the press rams 1, 2, the compact length L achieved is measured by means of the measuring devices 5, 6 integrated on the piston rods 5, 6, this measured value is compared with a target value L target and then a difference value Δ certainly. In accordance with this difference value, the amount or mass of the metal chips to be fed from the metering device 9 is defined according to the desired length L target of the compact 12 , the fill level is then set in the metering device 9 and the corresponding amount or mass is supplied by the tamper 9. This process can be repeated until the final pressure P max or the required pressure P erf and the target value L should have reached the length of the briquette or compact 12.

Zur Feststellung der Brikettlänge aus der Relativstellung der Preßstempel 1, 2 mittels der integrierten Meßeinrichtungen 5, 6 wird ein elektronisches Logikmodul 7 verwendet, welches nach der Beziehung Lsoll = S1 - S2

  • a) bei der Feststellung, daß die Brikettlänge List unterhalb des Sollwertes Lsoll liegt, einen Befehl zur Mehrdosierung oder
  • b) bei der Feststellung, daß die Brikettlänge List über dem Sollwert Lsoll liegt, einen Befehl zur Minderdosierung
    • von Metallspänen in der Dosiereinrichtung 9 auslöst.To determine the briquette length from the relative position of the press rams 1, 2 by means of the integrated measuring devices 5, 6, an electronic logic module 7 is used, which according to the relationship L soll = S 1 - S 2
  • a) when determining that the briquette L is below the set point L is located to a command for multi-dose or
  • b) to when determining that the briquette L is above the reference value L, a command for reducing dosage
    • of metal chips in the metering device 9.

    Gewerbliche AnwendbarkeitIndustrial applicability

    Es hat sich in Versuchen mit einer derart ausgeführten erfindungsgemäßen Brikettierpresse gezeigt, daß die angestrebte Aufgabenstellung lösbar und die Erfindung brauchbar ist.It has been found in tests with an inventive design of this type Briquetting press shown that the intended task can be solved and the Invention is useful.

    Claims (8)

    1. A method for briquetting metal chips in a briquetting press by pressurisation of the pressed article (12) by means of at least one press ram (1, 2) in a press bush (11), to which the metal chips are fed via a metering device (9) assigned radially to the press bush (11) using a stamper (8), comprising the following sequence of procedural steps:
      advancing the stamper (9), filling and closing the press bush (11),
      advancing the press ram (1, 2) and feeding the metal chips into the press section of the press bush (11),
      pressurisation of the metal chips by at least one press ram (1, 2) until the pressurisation Pmax or required pressure Perf is reached,
      retracting at least one press ram and ejecting the finished pressed article as a briquette and retract the press ram into the starting position,
      characterised in that
      a) during pressurisation Pmax/Perf by the press ram (1, 2) the resulting pressed article length (Lactual) is measured by means of a measuring device (5, 6), this measured value is compared to a nominal value (Lnominal) and then a differential value (Δ) is determined, and
      b) according to this differential value (Δ) the quantity/mass of the metal chips to be fed from the metering device (9) is determined according to the nominal length (Lnominal) of the pressed article (12), after which the filling mass in the metering device (9) is adjusted and the corresponding quantity/mass is supplied by the stamper (8).
    2. The method as claimed in Claim 1, characterised in that according to at least one renewed methodological step sequence the nominal value (Lnominal) of the length of the briquette is reached during pressurisation of the metal chips by the press ram (1, 2) until the pressurisation Pmax or required pressure Perf is reached.
    3. The method as claimed in any one of Claims 1 or 2, characterised by the use of an integrated measuring device (5, 6) for fixing and/or adjusting the briquette length (Lactual or Lnominal).
    4. The method as claimed in Claim 3, characterised by the use of a measuring device (5, 6) integrated on a piston rod (4, 5) of the press ram (1, 2).
    5. The method as claimed in Claim 3 or 4, characterised by the use of an electronic logic module for determining the briquette length from the relative positioning of the press ram (1, 2) by means of the integrated measuring device (5, 6) according to the equation (Lnominal/actual = S1 - S2).
    6. The method as claimed in any one of Claims 1 to 5, characterised by the use of an electronic logic module which, according to the equation Lnominal = S1 - S2,
      a) according to the observation that the briquette length Lactual is under the nominal value Lnominal, triggers a command for increased metering, or
      b) according to the observation that the briquette length Lactual is above the nominal value Lnominal, triggers a command for reduced metering
      of metal chips in the metering device (9).
    7. The method as claimed in any one of Claims 1 to 6, characterised by the use of an electronic regulator circuit (15) with actuators (10, 17.1, 17.2) for adjusting the method-specific processing data such as
      metering quantity (17.1),
      density of the pressed article (16.1),
      length of the pressed article (16.2) or
      pressing powers (16.3, 17.2).
    8. A briquetting press for carrying the method into effect, as claimed in any one of Claims 1 to 7, essentially comprising the assemblies making up the operating sequences of the machine, such as
      press bush (11) with opening for the radially assigned metering device (9) with stamper (8), which at the same time is a closing element for the opening in the press bush (11),
      two press rams (1, 2) guided in the press bush (11) with piston rod (3, 4), and
      a stand, frame or housing accommodating these assemblies as well as associated pressurisers,
      characterised in that
      a) the piston rods (3, 4) of the press ram (1, 2) house at least one measuring device (5, 6),
      b) between the measuring device (5, 6) and the metering device a regulator circuit (15) is provided for influencing the metering of metal chips depending on the briquette lengths (Lnominal/ actual) recorded by the measuring device (5, 6) and
      c) the regulator circuit (15) has actuators (10, 17) and a logic module (7) for controlling the processing sequence in the relationship between briquette length and metering quantity/mass.
    EP00934886A 1999-04-19 2000-04-12 Method for briquetting metal chips and briquetting press Expired - Lifetime EP1171284B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19917421A DE19917421C1 (en) 1999-04-19 1999-04-19 Process for briquetting metal chips and briquetting press
    DE19917421 1999-04-19
    PCT/DE2000/001115 WO2000063005A1 (en) 1999-04-19 2000-04-12 Method for briquetting metal chips and briquetting press

    Publications (2)

    Publication Number Publication Date
    EP1171284A1 EP1171284A1 (en) 2002-01-16
    EP1171284B1 true EP1171284B1 (en) 2003-07-02

    Family

    ID=7904932

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00934886A Expired - Lifetime EP1171284B1 (en) 1999-04-19 2000-04-12 Method for briquetting metal chips and briquetting press

    Country Status (7)

    Country Link
    US (2) US6782595B1 (en)
    EP (1) EP1171284B1 (en)
    JP (1) JP3979461B2 (en)
    AT (1) ATE244134T1 (en)
    DE (2) DE19917421C1 (en)
    ES (1) ES2200882T3 (en)
    WO (1) WO2000063005A1 (en)

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    Also Published As

    Publication number Publication date
    JP2002542036A (en) 2002-12-10
    US20040045453A1 (en) 2004-03-11
    EP1171284A1 (en) 2002-01-16
    DE19917421C1 (en) 2000-12-28
    US6941860B2 (en) 2005-09-13
    US6782595B1 (en) 2004-08-31
    JP3979461B2 (en) 2007-09-19
    ES2200882T3 (en) 2004-03-16
    WO2000063005A1 (en) 2000-10-26
    DE50002737D1 (en) 2003-08-07
    ATE244134T1 (en) 2003-07-15

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