EP2105292B1 - Roller adjustment device - Google Patents

Roller adjustment device Download PDF

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Publication number
EP2105292B1
EP2105292B1 EP09001650.2A EP09001650A EP2105292B1 EP 2105292 B1 EP2105292 B1 EP 2105292B1 EP 09001650 A EP09001650 A EP 09001650A EP 2105292 B1 EP2105292 B1 EP 2105292B1
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EP
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Prior art keywords
pelleting press
axial
drive element
radial
perforated die
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EP09001650.2A
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German (de)
French (fr)
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EP2105292A1 (en
Inventor
Norbert Scholz
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Salzhausener Maschinenbautechnik Salmatec GmbH
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Salzhausener Maschinenbautechnik Salmatec GmbH
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    • 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
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/208—Roller constructions; Mounting of the rollers

Definitions

  • the present invention relates to an adjusting device for varying the radial distance of at least one mulcher relative to an inner circumferential surface of a perforated die in a pelleting press, with a receiving device for receiving at least one Koller such that the Koller is arranged radially displaceable to a perforated die, and radial thrust means for radial displacement a mackerel within the cradle.
  • pelleting presses which are used for example for the production of pellets as cattle feed, are based on the principle that between the driven die, for example, a ring die, and the press rollers, usually called Koller, a material film is formed whose thickness, the throughput and quality the pellets determined.
  • the driven die for example, a ring die
  • the press rollers usually called Koller
  • a material film is formed whose thickness, the throughput and quality the pellets determined.
  • an adjusting device of the type mentioned with which the distance between the hull and the Lochmatrize and thus the thickness of the film of material is adjustable.
  • a disadvantage of the known Kollerverstellvorraum is that it is expensive to design and manufacture due to the integration of the drive piston in the interior of the perforated die. In addition, a distance measurement is relatively expensive, since the position of the drive piston is difficult to see from the outside. Finally, the known adjusting device is disadvantageous only for pelleting presses with only two rumblers suitable.
  • a Kollerverstellvortechnische for an extrusion mill in which an axial force acting on an axial drive element is transmitted to a radial output element to vary the radial distance of the Koller to the inner circumferential surface of the Lochmatrize.
  • the EP 0 238 147 A1 makes another pelleting press with radially adjustable hammers known.
  • the present invention is therefore based on the object, an adjusting device for varying the radial distance of at least one mulcher relative to an inner circumferential surface of a perforated die in a pelleting press, with a receiving device for receiving at least one mulcher such that the mulling can be arranged radially displaceable to a perforated die, and to provide radial thrust means for radially displacing a skimmer within the receiving device, which is simple in construction, can be produced inexpensively, permits a position measurement in a simple manner and which is also suitable for pelleting presses with three or more skimmers.
  • this object is achieved by a pelleting press having the features of claim 1.
  • This makes it possible according to the invention advantageously to move the axial drive element, thereby exerting a radial thrust on the Kolleraufhfitung. It is thus possible with advantage, drive means outside the To arrange pelleting press.
  • the construction is characterized advantageously easier than in the known adjustment system, in which the reciprocating must be integrated into the adjustment.
  • the transmission means are designed as thrust transmissions.
  • a thrust mechanism is a special case of a cam mechanism consisting of a cam member, an engaging member and a web connecting the cam member and the engaging member. Normally, the web is the frame, the cam member, the engaging member and the engaging member the output member.
  • the point of contact of the cam member and the engaging member may comprise an additional scanning member, such as a rotatably mounted in the engaging member roller with an identical degree of freedom to improve the running characteristics, without changing the kinematics.
  • transmission in its most general form is to be understood as a system for converting or transmitting movements and forces and / or torques.
  • gear is not meant to be limited to systems having a toothed connection. Nevertheless, gear transmissions of the term transmission according to the invention are also included.
  • a positive connection is formed between the drive element and the driven element.
  • the transmission means are configured as a cross section of the drive element which varies in the axial direction and is in operative connection with the output element.
  • the drive element assumes according to this embodiment of the invention the function of Cam member to implement a conversion acting on the axial drive element axial force in a Koller radially to the Lochmatrize driving radial force.
  • the cross section of the drive element in the axial direction monotonous, preferably linear, increasingly designed can be by monotonous or linear change in the axial position of the drive element, the distance between the inner circumferential surface of the perforated die and the outer surface of the Koller with advantage also vary monotonically or linearly. Depending on the direction of movement of the axial drive element results in a monotonous or linear change of the gap between Koller and Lochmatrize.
  • the drive element may have at least one axially aligned wedge element operatively connected to the output element.
  • the wedge element can be designed, for example, as a wedge body mounted on a rod, so that axial movements of the drive element are converted linearly into radial movements of the output element and thus of the wiper.
  • the drive element has at least one axially aligned, standing with the output element in operative connection, cone element.
  • the conical shape has in connection with the invention the advantage that it has a linearly increasing in the axial direction of radial cross section, thus causing a linear conversion of an axial force in a radial force.
  • the drive element is designed as a rod which protrudes axially beyond the hole die, if the adjustment device cooperates as intended with a perforated die.
  • both a drive and a possible position measuring device can advantageously be arranged on the drive element outside the pelleting press. The structure is thereby significantly facilitated.
  • the drive means comprise a, preferably double-acting, hydraulic cylinder. Due to the double action of the hydraulic cylinder, a drive of the drawbar in both axial directions is possible to increase by axial displacement of the rod depending on the design of the deflection the distance between Koller and Lochmatrize and / or to reduce.
  • the position readings obtained can be assigned to a distance between the roller and the perforated die knowing the transfer function of the transfer means.
  • a structurally particularly simple and thus advantageous embodiment of the invention provides that the means for position measurement in a state in which the adjustment device is intended to cooperate with a perforated die, are arranged axially outside of the perforated die.
  • the output element is designed as a holding device for, preferably rotatable, storage of the mulcher.
  • the holding device may be constructed within the scope of the invention so that it is movable longitudinally in a radial bore of the receiving device, wherein one end is in operative connection with the transmission means or the drive element.
  • the opposite end of the holding device is preferably provided according to this embodiment of the invention with a support for the axis of the skimmer.
  • means are provided for blocking the drive element in an axial position. In this way, a predetermined distance between distance and die can be set and fixed.
  • the FIG. 1 shows in the representation of an axial section along the line II in FIG FIG. 2 a pelleting press 1.
  • the pelleting press 1 consists essentially of a perforated die 2, which has the shape of a cylindrical drum, with an inner circumferential surface 3 in the Figures not shown holes.
  • Coaxially with the perforated die a Koller analysis 4 is arranged.
  • the Kollerability 4 has a coaxial with the Lochmatrize 2 aligned cylinder section 5.
  • the cylinder portion 5 protrudes at both ends on the Lochmatrize.
  • the Kollerability 4 on a pair of substantially massive disc-like attachments 6.
  • the disc-like attachments 6 are designed in one piece with the cylinder portion.
  • the disk-like attachments 6 can likewise be configured separately from the cylindrical section 5.
  • Each disc-like attachment 6 is as in FIG. 2 to be recognized, flattened at the edges such that a cross-section is hexagonal.
  • three similar radial holes 7 are introduced.
  • the radial bores 7 are arranged at equal angles to one another and extend radially from the beveled lateral surface 8 of the disc-like attachments 6 through the cylinder section 5.
  • an axle mount 9 with a piston-like portion 10 is arranged so as to be radially displaceable.
  • the axle mounts 9 have an oblique end surface 10 at the radially inner end. This is especially in the FIGS. 1 (b) and 3 (b) to recognize. At the oblique end face 10 opposite end of the axle holders 9, an axial bore 11 for receiving a Kollerachse 12 is formed.
  • the Koller analysis 4 Coaxial with the cylinder portion 5 of the Koller analysis 4 and thus coaxial with the punch die 2, the Kollerfact 4 a pull rod 14.
  • the drawbar 14 is, as in the FIGS. 1 (a) and 1 (b) be particularly clearly seen, in axial areas, which coincide in the axial direction with the disc-like attachments 6 of the cylinder portion 5, each provided with three axially oriented wedge attachments 15. Overall, the pull rod 14 thus six wedge attachments 15.
  • the wedge attachments 15 are distributed at equal angular intervals over the lateral surface of the drawbar 14, the angular distance is thus about 120 °.
  • the wedge attachments 15 may be connected to one another and screwed onto the pull rod 14 via a thread (not shown). This has the advantage that both the axial position and the radial position of the wedge attachments 15 is configured variably.
  • the wedge surface of the wedge heels 15 is arranged in a form-fitting manner with the associated oblique end face 10 of the axle mount 9.
  • the drawbar 14 is connected to a double-acting hydraulic cylinder 16 such that the hydraulic cylinder 16 can move the drawbar 14 in both axial directions.
  • the hydraulic cylinder 16 is shown only schematically.
  • the disc-like attachments 6 of the Kollerage 4 are additionally provided with scrapers 17.
  • the scrapers 17 are connected via radial connecting linkage with the chamfered lateral surfaces 18 of the disc-like attachments 6.
  • the beveled lateral surfaces 18, to which the scrapers 17 are fastened, are at angles of approximately 60 ° offset from the beveled lateral surfaces 8, in which the radial bores 7 are introduced, arranged.
  • the scrapers 17 assist the pelletizing process by scraping off the material to be pelletized from the inner circumferential surface 3 of the perforated die 2, in order subsequently to be pressed by the hollows 13 through the holes of the perforated die 2 (not illustrated).
  • FIGS. 1 and 2 show the pelleting press 1 with the Kollerability 4 in a state in which the defined by the distance of the inner circumferential surface 3 to the outer circumferential surface 19 of the Koller 13 nip gap 20 is maximum.
  • the drawbar 14 is in a position in which the wedge attachments 15 are positioned so that a positive connection between the oblique end face 10 of the axle mount 9 and the wedge surface of the wedge attachments 15 in the flattest region of the wedge attachments 15 is given.
  • the axle mount 9 is introduced furthest into the radial bore 7 in this state, so that the Kollerachsen 12 of the Koller 13 have a minimum distance from the axis of the Lochmatrize 2, therefore, the nip gap 20 is maximum.
  • the piston 21 of the hydraulic cylinder 16 is maximally extended.
  • the tensile force acting in the axial direction of the hydraulic cylinder 16 is translated into a radially outwardly acting thrust on the axle mounts 9.
  • the axle holders 9 thus move within the radial bores 7 to the outside.
  • the bearing in the axial bores 11 of the axle holders 9 Kollerachsen 12 are also moved radially outward.
  • the nip gap 20 between the inner circumferential surface 3 of the perforated die 2 and the outer circumferential surface 19 of the roller 13 is reduced.
  • a displacement and / or position measurement of the drawbar 14 can be in a simple way, as measured outside the hole die 2, the nip 20.
  • a conversion function between axial positions of the tie rod 14 and radial crevices 20 is determined.
  • the conversion function is a constant factor.
  • roller adjustment device can be used equally for pelleting presses with a different number of rollers.
  • the system can also be used for a two-roller system.
  • an adjustment device for varying the radial distance 20 of at least one edge 13 is proposed relative to an inner surface 3 of a perforated die 2 in a pelleting press 1, which is particularly simple and a measurement of the nip 20 in a particularly simple manner allows.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Press Drives And Press Lines (AREA)

Description

Die vorliegende Erfindung betrifft eine Verstellvorrichtung zum Variieren des radialen Abstands mindestens eines Kollers relativ zu einer Innenmantelfläche einer Lochmatrize in einer Pelletierpresse, mit einer Aufnahmevorrichtung zur Aufnahme mindestens eines Kollers derart, dass der Koller radial zu einer Lochmatrize verschiebbar anordenbar ist, und Radialschubmitteln zum radialen Verschieben eines Kollers innerhalb der Aufnahmevorrichtung.The present invention relates to an adjusting device for varying the radial distance of at least one mulcher relative to an inner circumferential surface of a perforated die in a pelleting press, with a receiving device for receiving at least one Koller such that the Koller is arranged radially displaceable to a perforated die, and radial thrust means for radial displacement a mackerel within the cradle.

Bekannte Pelletierpressen, welche beispielsweise für die Herstellung von Pellets als Viehfutter eingesetzt werden, beruhen auf dem Prinzip, dass zwischen der angetriebenen Matrize, beispielsweise einer Ringmatrize, und den Pressrollen, meist Koller genannt, ein Materialfilm entsteht, dessen Dicke die Durchsatzmenge und auch die Qualität der Pellets mitbestimmt. Um eine derartige Pelletierpresse entsprechend dem zu verarbeitenden Material, seiner Zusammensetzung und der Pressenkonstruktion einstellen zu können, ist es bekannt, eine Verstellvorrichtung der eingangs genannten Art vorzusehen, mit welcher der Abstand zwischen den Kollern und der Lochmatrize und damit die Dicke des Materialfilms einstellbar ist.Known pelleting presses, which are used for example for the production of pellets as cattle feed, are based on the principle that between the driven die, for example, a ring die, and the press rollers, usually called Koller, a material film is formed whose thickness, the throughput and quality the pellets determined. In order to adjust such a pelleting press according to the material to be processed, its composition and the press design, it is known to provide an adjusting device of the type mentioned, with which the distance between the hull and the Lochmatrize and thus the thickness of the film of material is adjustable.

Aus der EP 0 231 764 sind verschiedene Ausführungsformen von Verstellvorrichtungen bekannt. Insbesondere ist aus der EP 0 231 764 in Figur 7 ein Verstellmechanismus der eingangs genannten Art bekannt, bei welchem die Koller jeweils auf einer Lagerspindel gelagert sind, die in einem vierkantigen Kopf endet. Auf diese Köpfe drücken doppelt wirkende Kolben in Richtung der Lochmatrize. Aufgrund der von den doppeltwirkenden Kolben auf die Köpfe der Lagerspindel ausgeübten radialen Kraft gleiten die Köpfe der Lagerspindel in radialen Führungen der Kolleraufnahme. Dadurch wird im Stand der Technik eine radiale Verstellung der Kollern relativ zur Lochmatrize bewirkt, um den Spalt zwischen Koller und Lochmatrize zu variierten.From the EP 0 231 764 Various embodiments of adjusting devices are known. In particular, from the EP 0 231 764 in Figure 7, an adjusting mechanism of the aforementioned type, in which the Koller are each mounted on a bearing spindle, which ends in a square head. On these heads double-acting pistons push in the direction of the perforated die. Due to the radial force exerted by the double-acting piston on the heads of the bearing spindle, the heads of the bearing spindle slide in radial guides of the Kolleraufnahme. This is in the prior art, a radial Adjustment of the hull relative to the hole die causes to vary the gap between Koller and Lochmatrize.

Nachteilig an der bekannten Kollerverstellvorrichtung ist, dass sie aufgrund der Integrierung des Antriebskolbens in das Innere der Lochmatrize aufwendig in Konstruktion und Herstellung ist. Außerdem ist eine Wegmessung vergleichsweise aufwendig, da die Stellung des Antriebskolbens von außen nur schwer erkennbar ist. Schließlich ist die bekannte Verstellvorrichtung mit Nachteil nur für Pelletierpressen mit lediglich zwei Kollern geeignet.A disadvantage of the known Kollerverstellvorrichtung is that it is expensive to design and manufacture due to the integration of the drive piston in the interior of the perforated die. In addition, a distance measurement is relatively expensive, since the position of the drive piston is difficult to see from the outside. Finally, the known adjusting device is disadvantageous only for pelleting presses with only two rumblers suitable.

Aus der WO 2004/073963 A1 ist eine Kollerverstellvorrichtung für eine Extrusionsmühle bekannt, bei dem eine auf ein axiales Antriebselement wirkende Axialkraft auf ein radiales Abtriebselement übertragen wird, um den radialen Abstand der Koller zur Innenmantelfläche der Lochmatrize zu variieren.From the WO 2004/073963 A1 a Kollerverstellvorrichtung for an extrusion mill is known, in which an axial force acting on an axial drive element is transmitted to a radial output element to vary the radial distance of the Koller to the inner circumferential surface of the Lochmatrize.

Die aus der GB 2 130 959 A bekannte Kollerverstellvorrichtung basiert auf dem Zusammenwirken einer axial ausgerichteten Gewindestange, welche Keilelemente mit nach außen gerichteten geneigten Flächen aufweist, mit Komplementär geneigten Flächen einer radial verschiebbaren Einheit, in welcher ein Koller gelagert ist. Das Dokument GB 2 130 959 A offenbart ebenfalls eine Pelletierpresse gemäß dem Oberbegriff des Anspruchs 1. Die US 3,467,031 macht eine Pelletierpresse mit exzentrischer Kollerverstellung vorbekannt.The from the GB 2 130 959 A Known Kollerverstellvorrichtung based on the interaction of an axially oriented threaded rod having wedge elements with outwardly directed inclined surfaces, with complementary inclined surfaces of a radially displaceable unit in which a Koller is mounted. The document GB 2 130 959 A also discloses a pelleting press according to the preamble of claim 1. The US 3,467,031 makes a pelleting press with eccentric Kollerverstellung already known.

Die EP 0 238 147 A1 macht eine weitere Pelletierpresse mit radial verstellbaren Kollern bekannt.The EP 0 238 147 A1 makes another pelleting press with radially adjustable hammers known.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Verstellvorrichtung zum Variieren des radialen Abstands mindestens eines Kollers relativ zu einer Innenmantelfläche einer Lochmatrize in einer Pelletierpresse, mit einer Aufnahmevorrichtung zur Aufnahme mindestens eines Kollers derart, dass der Kollern radial zu einer Lochmatrize verschiebbar anordenbar ist, und Radialschubmittel zum radialen Verschieben eines Kollers innerhalb der Aufnahmevorrichtung anzugeben, welche einfach aufgebaut ist, kostengünstig herstellbar ist, auf einfache Weise eine Stellungsmessung erlaubt und welche auch für Pelletierpressen mit drei oder mehr Kollern geeignet ist.The present invention is therefore based on the object, an adjusting device for varying the radial distance of at least one mulcher relative to an inner circumferential surface of a perforated die in a pelleting press, with a receiving device for receiving at least one mulcher such that the mulling can be arranged radially displaceable to a perforated die, and to provide radial thrust means for radially displacing a skimmer within the receiving device, which is simple in construction, can be produced inexpensively, permits a position measurement in a simple manner and which is also suitable for pelleting presses with three or more skimmers.

Erfindungsgemäß wird diese Aufgabe durch eine Pelletierpresse mit den Merkmalen des Anspruchs 1 gelöst. Hierdurch ist es erfindungsgemäß mit Vorteil möglich, das axiale Antriebselement zu bewegen, um dadurch eine radiale Schubkraft auf die Kolleraufhängung auszuüben. Es ist somit mit Vorteil möglich, Antriebsmittel außerhalb der Pelletierpresse anzuordnen. Die Konstruktion gestaltet sich dadurch mit Vorteil einfacher als bei dem bekannten Verstellsystem, bei welchem die Hubkolben in die Verstellvorrichtung integriert sein müssen. Erfindungsgemäss sind die Übertragungsmittel als Schubgetriebe ausgestaltet. Ein Schubgetriebe ist ein Spezialfall eines Kurvengetriebes bestehend aus einem Kurvenglied, einem Eingriffsglied sowie einem das Kurvenglied und das Eingriffsglied verbindenden Steg. Im Normalfall ist der Steg das Gestell, das Kurvenglied das Angriffsglied und das Eingriffsglied das Abtriebsglied. Der Berührungspunkt des Kurvenglieds und des Eingriffsglieds kann ein zusätzliches Abtastglied aufweisen, etwa eine drehbar im Eingriffsglied gelagerte Rolle mit einem identischen Freiheitsgrad, um die Laufeigenschaften zu verbessern, ohne die Kinematik zu verändern. Im Rahmen der Erfindung ist der Begriff Getriebe in seiner allgemeinsten Form als ein System zum Wandeln oder Übertragen von Bewegungen und Kräften und/oder Drehmomenten zu verstehen. Insbesondere ist mit dem Begriff Getriebe keine Einschränkung auf Systeme mit einer Zahnverbindung gemeint. Dennoch sind auch Zahngetriebe vom erfindungsgemäßen Begriff Getriebe umfasst.According to the invention this object is achieved by a pelleting press having the features of claim 1. This makes it possible according to the invention advantageously to move the axial drive element, thereby exerting a radial thrust on the Kolleraufhängung. It is thus possible with advantage, drive means outside the To arrange pelleting press. The construction is characterized advantageously easier than in the known adjustment system, in which the reciprocating must be integrated into the adjustment. According to the invention, the transmission means are designed as thrust transmissions. A thrust mechanism is a special case of a cam mechanism consisting of a cam member, an engaging member and a web connecting the cam member and the engaging member. Normally, the web is the frame, the cam member, the engaging member and the engaging member the output member. The point of contact of the cam member and the engaging member may comprise an additional scanning member, such as a rotatably mounted in the engaging member roller with an identical degree of freedom to improve the running characteristics, without changing the kinematics. In the context of the invention, the term transmission in its most general form is to be understood as a system for converting or transmitting movements and forces and / or torques. In particular, the term gear is not meant to be limited to systems having a toothed connection. Nevertheless, gear transmissions of the term transmission according to the invention are also included.

Um die Berührung zwischen dem Antriebselement und dem Abtriebselement durch angepasste Formgebung zu sichern, ist in vorteilhafter Ausgestaltung der Erfindung vorgesehen, dass zwischen dem Antriebselement und dem Abtriebselement eine Formschlussverbindung ausgebildet ist.In order to ensure the contact between the drive element and the driven element by means of adapted shaping, it is provided in an advantageous embodiment of the invention that a positive connection is formed between the drive element and the driven element.

Besonders günstig ist es gemäß einer Ausgestaltung der Erfindung, wenn die Übertragungsmittel als in axialer Richtung variierender, mit dem Abtriebselement in Wirkverbindung stehender Querschnitt des Antriebselements ausgestaltet sind. Das Antriebselement übernimmt gemäß dieser erfindungsgemäßen Ausgestaltung die Funktion des Kurvenglieds, um eine Umwandlung auf das axiale Antriebselement wirkende Axialkraft in eine die Koller radial zur Lochmatrize antreibende Radialkraft umzusetzen.According to one embodiment of the invention, it is particularly favorable when the transmission means are configured as a cross section of the drive element which varies in the axial direction and is in operative connection with the output element. The drive element assumes according to this embodiment of the invention the function of Cam member to implement a conversion acting on the axial drive element axial force in a Koller radially to the Lochmatrize driving radial force.

Wenn gemäß einer weiteren bevorzugten Ausführungsform der Erfindung der Querschnitt des Antriebselements in axialer Richtung monoton, vorzugsweise linear, zunehmend ausgestaltet ist, lässt sich durch monotone bzw. lineare Veränderung der Axialstellung des Antriebselements der Abstand zwischen der Innenmantelfläche der Lochmatrize und der Außenmantelfläche der Koller mit Vorteil ebenfalls monoton bzw. linear variieren. Je nach Bewegungsrichtung des axialen Antriebselements ergibt sich eine monotone bzw. lineare Änderung des Spalts zwischen Koller und Lochmatrize.If according to a further preferred embodiment of the invention, the cross section of the drive element in the axial direction monotonous, preferably linear, increasingly designed, can be by monotonous or linear change in the axial position of the drive element, the distance between the inner circumferential surface of the perforated die and the outer surface of the Koller with advantage also vary monotonically or linearly. Depending on the direction of movement of the axial drive element results in a monotonous or linear change of the gap between Koller and Lochmatrize.

In einer Ausgestaltung der Erfindung kann das Antriebselement mindestens ein axial ausgerichtetes, mit dem Abtriebselement in Wirkverbindung stehendes, Keilelement aufweisen. Das Keilelement kann beispielsweise als auf einer Stange angebrachter Keilkörper ausgestaltet sein, sodass Axialbewegungen des Antriebselements linear in Radialbewegungen des Abtriebselements und somit des Kollers umgewandelt werden.In one embodiment of the invention, the drive element may have at least one axially aligned wedge element operatively connected to the output element. The wedge element can be designed, for example, as a wedge body mounted on a rod, so that axial movements of the drive element are converted linearly into radial movements of the output element and thus of the wiper.

In anderer Ausgestaltung der Erfindung ist vorgesehen, dass das Antriebselement mindestens ein axial ausgerichtetes, mit dem Abtriebselement in Wirkverbindung stehendes, Kegelelement aufweist. Die Kegelform hat im Zusammenhang mit der Erfindung den Vorteil, dass sie einen in axialer Richtung linear zunehmenden radialen Querschnitt aufweist, um somit eine lineare Umsetzung einer Axialkraft in eine Radialkraft zu bewirken.In another embodiment of the invention it is provided that the drive element has at least one axially aligned, standing with the output element in operative connection, cone element. The conical shape has in connection with the invention the advantage that it has a linearly increasing in the axial direction of radial cross section, thus causing a linear conversion of an axial force in a radial force.

Erfindungsgemäss ist das Antriebselement als Stange ausgestaltet, welche axial über die Lochmatrize hervorsteht, wenn die Verstellvorrichtung bestimmungsgemäß mit einer Lochmatrize zusammenwirkt. Gemäß dieser Ausgestaltung kann mit Vorteil sowohl ein Antrieb als auch eine etwaige Stellungsmeßvorrichtung an dem Antriebselement außerhalb der Pelletierpresse angeordnet werden. Der Aufbau wird hierdurch deutlich erleichtert.According to the invention, the drive element is designed as a rod which protrudes axially beyond the hole die, if the adjustment device cooperates as intended with a perforated die. According to this embodiment, both a drive and a possible position measuring device can advantageously be arranged on the drive element outside the pelleting press. The structure is thereby significantly facilitated.

Eine automatische Variation des Abstands zwischen Koller und Lochmatrize ist im Rahmen der Erfindung möglich, wenn Antriebsmittel zum Erzeugen einer axialen Kraft auf das Antriebselement vorgesehen sind. Als Antriebsmittel sind aller bekannten Motoren, zum Beispiel Schrittmotoren, oder ähnliches geeignet.An automatic variation of the distance between Koller and Lochmatrize is possible within the scope of the invention, when drive means are provided for generating an axial force on the drive element. As drive means all known motors, for example stepper motors, or the like are suitable.

In spezieller vorteilhafter Ausgestaltung der Erfindung weisen die Antriebsmittel einen, vorzugsweise doppelt wirkenden, Hydraulikzylinder auf. Durch die Doppelwirkung des Hydraulikzylinders ist ein Antrieb der Zugstange in beiden axialen Richtungen möglich, um durch axiales Verschieben der Stange je nach Ausgestaltung der Umlenkmittel den Abstand zwischen Koller und Lochmatrize zu vergrößern und/oder zu verkleinern.In a particularly advantageous embodiment of the invention, the drive means comprise a, preferably double-acting, hydraulic cylinder. Due to the double action of the hydraulic cylinder, a drive of the drawbar in both axial directions is possible to increase by axial displacement of the rod depending on the design of the deflection the distance between Koller and Lochmatrize and / or to reduce.

Wenn in bevorzugter Ausgestaltung der Erfindung Mittel zur Stellungsmessung des axialen Antriebselements vorgesehen sind, lassen sich die erhaltenen Stellungsmeßwerte bei Kenntnis der Übertragungsfunktion der Übertragungsmittel einem Abstand zwischen Koller und Lochmatrize zuordnen.If, in a preferred embodiment of the invention, means for measuring the position of the axial drive element are provided, the position readings obtained can be assigned to a distance between the roller and the perforated die knowing the transfer function of the transfer means.

Eine konstruktiv besonders einfache und damit vorteilhafte Ausgestaltung der Erfindung sieht vor, dass die Mittel zur Stellungsmessung in einem Zustand, in dem die Verstellvorrichtung bestimmungsgemäß mit einer Lochmatrize zusammenwirkt, axial außerhalb der Lochmatrize anordenbar sind.A structurally particularly simple and thus advantageous embodiment of the invention provides that the means for position measurement in a state in which the adjustment device is intended to cooperate with a perforated die, are arranged axially outside of the perforated die.

Gemäß bevorzugter Ausführung der Erfindung ist das Abtriebselement als Haltevorrichtung zur, vorzugsweise drehbaren, Lagerung des Kollers ausgestaltet. Die Haltevorrichtung kann im Rahmen der Erfindung so konstruiert sein, dass sie länglich in einer radialen Bohrung der Aufnahmevorrichtung beweglich ist, wobei ein Ende in Wirkverbindung mit dem Übertragungsmittel bzw. dem Antriebselement steht. Das gegenüberliegende Ende der Haltevorrichtung ist gemäß dieser Ausgestaltung der Erfindung vorzugsweise mit einer Lagerung für die Achse des Kollers versehen.According to a preferred embodiment of the invention, the output element is designed as a holding device for, preferably rotatable, storage of the mulcher. The holding device may be constructed within the scope of the invention so that it is movable longitudinally in a radial bore of the receiving device, wherein one end is in operative connection with the transmission means or the drive element. The opposite end of the holding device is preferably provided according to this embodiment of the invention with a support for the axis of the skimmer.

Vorzugsweise sind im Rahmen der Erfindung Mittel zum Blockieren des Antriebselements in einer axialen Stellung vorgesehen. Hierdurch kann ein vorgegebener Abstand zwischen Abstand und Matrize eingestellt und fixiert werden.Preferably, within the scope of the invention, means are provided for blocking the drive element in an axial position. In this way, a predetermined distance between distance and die can be set and fixed.

Die Erfindung wird in einer bevorzugten Ausführungsform unter Bezugnahme auf eine Zeichnung beispielhaft beschrieben, wobei weitere vorteilhafte Einzelheiten den Figuren der Zeichnung zu entnehmen sind. Funktionsmäßig gleiche Teile sind dabei mit denselben Bezugszeichen versehen.The invention will be described by way of example in a preferred embodiment with reference to a drawing, wherein further advantageous details are shown in the figures of the drawing. Functionally identical parts are provided with the same reference numerals.

Die Figuren der Zeichnung zeigen im Einzelnen:

Figur 1(a):
eine Pelletierpresse mit einer erfindungsgemäßen Kollerverstellung in einem Zustand mit maximalem Kollerspalt in einer axialen Schnittdarstellung, wobei der Schnitt entlang der Linie I-I in Figur 2 verläuft;
Figur 1(b):
Detaildarstellung des Bereichs W aus Figur 1 (a);
Figur 2(a):
axiale Ansicht in Richtung des Pfeils II in Figur 1(a) auf die Pelletiervorrichtung mit der erfindungsgemäßen Kollerverstellung aus Figur 1, wobei ein Kolbenantrieb sowie ein Deckel der Kolleraufnahme nicht dargestellt sind;
Figur 2(b):
Detaildarstellung des Bereichs X in Figur 2(a);
Figur 3:
die Pelletierpresse mit der erfindungsgemäßen Kollerverstellung aus den Figuren 1 und 2 in einem Zustand mit minimalem Kollerspalt, wobei die Ansichten jenen in Figur 1 entsprechen, die Detaildarstellung trägt die Bezeichnung Y, der Längsschnitt in Teil A verläuft entlang der Linie III-III in Figur 4;
Figur 4:
Draufsicht in Richtung des Pfeils IV aus Figur 3 in axialer Richtung der Pelletierpresse mit erfindungsgemäßer Kollerspaltverstellung in einem Zustand mit minimalem Kollerspalt, wobei die Ansichten jenen der Figur 2 entsprechen, die Detaildarstellung trägt jedoch die Bezeichnung Z;
Figur 5:
axiale Draufsicht auf eine Zugstange als Bestandteil der in den Figuren 1 bis 4 dargestellten erfindungsgemäßen Kollerspaltverstellung in einer Ansicht a) entsprechend der Blickrichtung in Richtung des Pfeils II in Figur 1 des Pfeils IV in Figur 3 sowie (b) in der Gegenrichtung.
The figures of the drawing show in detail:
FIG. 1 (a)
a pelleting press with a Kollerverstellung invention in a state with maximum nip in an axial sectional view, the section along the line II in FIG. 2 runs;
FIG. 1 (b):
Detail display of area W off FIG. 1 (a) ;
FIG. 2 (a)
axial view in the direction of the arrow II in FIG. 1 (a) on the pelleting device with the Kollerverstellung invention FIG. 1 wherein a piston drive and a lid of the Kolleraufnahme are not shown;
FIG. 2 (b):
Detailed representation of the area X in FIG. 2 (a) ;
FIG. 3:
the pelleting press with the Kollerverstellung invention from the FIGS. 1 and 2 in a state with minimum collision gap, the views being those in FIG. 1 The detailed representation is called Y, the longitudinal section in Part A runs along the line III-III in FIG. 4 ;
FIG. 4:
Top view in the direction of the arrow IV FIG. 3 in the axial direction of the pelleting press with inventive Kollerspaltverstellung in a state with minimal collision gap, the views of those of FIG. 2 However, the detailed representation bears the name Z;
FIG. 5:
axial plan view of a pull rod as part of the in the FIGS. 1 to 4 in a view a) according to the viewing direction in the direction of the arrow II in FIG. 1 of the arrow IV in FIG. 3 and (b) in the opposite direction.

Die Figur 1 zeigt in der Darstellung eines Axialschnitts entlang der Linie I-I in Figur 2 eine Pelletierpresse 1. Die Pelletierpresse 1 besteht im Wesentlichen aus einer Lochmatrize 2, welche die Form einer zylindrischen Trommel aufweist, mit einer Innenmantelfläche 3 mit in den Figuren nicht dargestellten Löchern. Koaxial mit der Lochmatrize ist eine Kolleraufnahme 4 angeordnet. Die Kolleraufnahme 4 weist einen koaxial zur Lochmatrize 2 ausgerichteten Zylinderabschnitt 5 auf. Der Zylinderabschnitt 5 ragt an beiden Enden über die Lochmatrize heraus. In einem axialen Abstand zueinander weist die Kolleraufnahme 4 ein Paar im Wesentlichen massiver scheibenartiger Aufsätze 6 auf. Die scheibenartigen Aufsätze 6 sind einstückig mit dem Zylinderabschnitt ausgestaltet. Im Rahmen der Erfindung können die scheibenartigen Aufsätze 6 jedoch gleichermaßen separat von dem zylindrischen Abschnitt 5 ausgestaltet sein. Jeder scheibenartige Aufsatz 6 ist, wie in Figur 2 zu erkennen, an den Rändern derart abgeflacht, dass ein Querschnitt sechseckig ist. In die scheibenartigen Aufsätze 6 sind drei gleichartige radiale Bohrungen 7 eingebracht. Die radialen Bohrungen 7 sind in gleichen Winkeln zueinander angeordnet und erstrecken sich radial jeweils von der abgeschrägten Mantelfläche 8 der scheibenartigen Aufsätze 6 bis durch den Zylinderabschnitt 5 hindurch. Innerhalb der radialen Bohrung 7 ist jeweils eine Achsenhalterung 9 mit einem kolbenartigen Abschnitt 10 radial verschiebbar angeordnet.The FIG. 1 shows in the representation of an axial section along the line II in FIG FIG. 2 a pelleting press 1. The pelleting press 1 consists essentially of a perforated die 2, which has the shape of a cylindrical drum, with an inner circumferential surface 3 in the Figures not shown holes. Coaxially with the perforated die a Kolleraufnahme 4 is arranged. The Kolleraufnahme 4 has a coaxial with the Lochmatrize 2 aligned cylinder section 5. The cylinder portion 5 protrudes at both ends on the Lochmatrize. At an axial distance from each other, the Kolleraufnahme 4 on a pair of substantially massive disc-like attachments 6. The disc-like attachments 6 are designed in one piece with the cylinder portion. In the context of the invention, however, the disk-like attachments 6 can likewise be configured separately from the cylindrical section 5. Each disc-like attachment 6 is as in FIG. 2 to be recognized, flattened at the edges such that a cross-section is hexagonal. In the disc-like attachments 6 three similar radial holes 7 are introduced. The radial bores 7 are arranged at equal angles to one another and extend radially from the beveled lateral surface 8 of the disc-like attachments 6 through the cylinder section 5. Within the radial bore 7, an axle mount 9 with a piston-like portion 10 is arranged so as to be radially displaceable.

Die Achsenhalterungen 9 weisen an dem radial inneren Ende eine schräge Endfläche 10 auf. Dies ist besonders in den Figuren 1(b) und 3(b) zu erkennen. An dem der schrägen Endfläche 10 entgegengesetzten Ende der Achsenhalterungen 9 ist eine axiale Bohrung 11 zur Aufnahme einer Kollerachse 12 ausgeformt.The axle mounts 9 have an oblique end surface 10 at the radially inner end. This is especially in the FIGS. 1 (b) and 3 (b) to recognize. At the oblique end face 10 opposite end of the axle holders 9, an axial bore 11 for receiving a Kollerachse 12 is formed.

Zwischen dem Paar scheibenartiger Aufsätze 6 der Kolleraufnahme 4 ist mittels der Achsenhalterungen 9 anhand der darin ausgeformten axialen Bohrung 11 mit der Kollerachse 12 jeweils ein Koller 13 drehbar gelagert. Die Lager sind aus Gründen der Übersichtlichkeit nicht dargestellt. Auf diese Weise sind in der Kolleraufnahme 4 insgesamt drei Koller 13 drehbar aufgenommen. Die Achsenhalterungen 9 sind mit ihrem kolbenartigen Abschnitt in den radialen Bohrungen 7 der scheibenartigen Aufsätze 6 radial verschiebbar, indem die Achsenhalterungen 9 verschoben werden.Between the pair of disc-like attachments 6 of the Kolleraufnahme 4 by means of the axle holders 9 based on the formed therein axial bore 11 with the Kollerachse 12 each a Koller 13 rotatably mounted. The bearings are not shown for reasons of clarity. In this way, a total of three Koller 13 are rotatably received in the Kolleraufnahme 4. The axle mounts 9 are with their piston-like portion in the radial bores 7 of the disc-like attachments 6 radially displaceable by the axle mounts 9 are moved.

Koaxial zu dem Zylinderabschnitt 5 der Kolleraufnahme 4 und somit koaxial zur Lochmatrize 2 weist die Kolleraufnahme 4 eine Zugstange 14 auf. Die Zugstange 14 ist, wie in den Figuren 1(a) und 1(b) besonders deutlich zu erkennen, in axialen Bereichen, welche in axialer Richtung mit den scheibenartigen Aufsätzen 6 des Zylinderabschnitts 5 zusammenfallen, mit jeweils drei axial orientierten Keilaufsätzen 15 versehen. Insgesamt hat die Zugstange 14 somit sechs Keilaufsätze 15. Die Keilaufsätze 15 sind in gleichmäßigen Winkelabständen über die Mantelfläche der Zugstange 14 verteilt, der Winkelabstand beträgt somit etwa 120°. Die Keilaufsätze 15 können miteinander verbunden sein und über ein nicht dargestelltes Gewinde auf die Zugstange 14 aufgeschraubt sein. Dies hat den Vorteil, dass sowohl die axiale Stellung als auch die radiale Stellung der Keilaufsätze 15 variabel ausgestaltet ist.Coaxial with the cylinder portion 5 of the Kolleraufnahme 4 and thus coaxial with the punch die 2, the Kolleraufnahme 4 a pull rod 14. The drawbar 14 is, as in the FIGS. 1 (a) and 1 (b) be particularly clearly seen, in axial areas, which coincide in the axial direction with the disc-like attachments 6 of the cylinder portion 5, each provided with three axially oriented wedge attachments 15. Overall, the pull rod 14 thus six wedge attachments 15. The wedge attachments 15 are distributed at equal angular intervals over the lateral surface of the drawbar 14, the angular distance is thus about 120 °. The wedge attachments 15 may be connected to one another and screwed onto the pull rod 14 via a thread (not shown). This has the advantage that both the axial position and the radial position of the wedge attachments 15 is configured variably.

Die Keilfläche der Keilabsätze 15 ist formschlüssig mit der zugeordneten schrägen Endfläche 10 der Achsenhalterung 9 angeordnet.The wedge surface of the wedge heels 15 is arranged in a form-fitting manner with the associated oblique end face 10 of the axle mount 9.

An dem Abschnitt der Zugstange 14, welcher außerhalb der Lochmatrize 2 angeordnet ist, ist die Zugstange 14 mit einem doppelt wirkenden Hydraulikzylinder 16 derart verbunden, dass der Hydraulikzylinder 16 die Zugstange 14 in beiden axialen Richtungen bewegen kann. Der Hydraulikzylinder 16 ist nur schematisch dargestellt.At the portion of the drawbar 14, which is arranged outside of the perforated die 2, the drawbar 14 is connected to a double-acting hydraulic cylinder 16 such that the hydraulic cylinder 16 can move the drawbar 14 in both axial directions. The hydraulic cylinder 16 is shown only schematically.

Die scheibenartigen Aufsätze 6 der Kolleraufnahme 4 sind zusätzlich mit Schabern 17 versehen. Die Schaber 17 sind über radiale Verbindungsgestänge mit den abgeschrägten Mantelflächen 18 der scheibenartigen Aufsätze 6 verbunden. Die abgeschrägten Mantelflächen 18, an denen die Schaber 17 befestigt sind, sind um Winkel von etwa 60° versetzt zu den abgeschrägten Mantelflächen 8, in welche die radialen Bohrungen 7 eingebracht sind, angeordnet. Die Schaber 17 unterstützen den Pelletiervorgang, indem das zu pelletierende Material von der Innenmantelfläche 3 der Lochmatrize 2 abgeschabt wird, um anschließend von den Kollern 13 durch die nicht dargestellten Löcher der Lochmatrize 2 gepresst zu werden.The disc-like attachments 6 of the Kolleraufnahme 4 are additionally provided with scrapers 17. The scrapers 17 are connected via radial connecting linkage with the chamfered lateral surfaces 18 of the disc-like attachments 6. The beveled lateral surfaces 18, to which the scrapers 17 are fastened, are at angles of approximately 60 ° offset from the beveled lateral surfaces 8, in which the radial bores 7 are introduced, arranged. The scrapers 17 assist the pelletizing process by scraping off the material to be pelletized from the inner circumferential surface 3 of the perforated die 2, in order subsequently to be pressed by the hollows 13 through the holes of the perforated die 2 (not illustrated).

Die Figuren 1 und 2 zeigen die Pelletierpresse 1 mit der Kolleraufnahme 4 in einem Zustand, in welchem der durch den Abstand der Innenmantelfläche 3 zur Außenmantelfläche 19 der Koller 13 definierte Kollerspalt 20 maximal ist. In diesem Zustand befindet sich die Zugstange 14 in einer Stellung, in welcher die Keilaufsätze 15 derart positioniert sind, dass eine Formschlussverbindung zwischen der schrägen Endfläche 10 der Achsenhalterung 9 und der Keilfläche der Keilaufsätze 15 im flachsten Bereich der Keilaufsätze 15 gegeben ist. Die Achsenhalterung 9 ist in diesem Zustand am weitesten in die radiale Bohrung 7 eingeführt, sodass die Kollerachsen 12 der Koller 13 einen minimalen Abstand zur Achse der Lochmatrize 2 aufweisen, mithin der Kollerspalt 20 maximal ist. In diesem Zustand ist der Kolben 21 des Hydraulikzylinders 16 maximal ausgefahren.The FIGS. 1 and 2 show the pelleting press 1 with the Kolleraufnahme 4 in a state in which the defined by the distance of the inner circumferential surface 3 to the outer circumferential surface 19 of the Koller 13 nip gap 20 is maximum. In this state, the drawbar 14 is in a position in which the wedge attachments 15 are positioned so that a positive connection between the oblique end face 10 of the axle mount 9 and the wedge surface of the wedge attachments 15 in the flattest region of the wedge attachments 15 is given. The axle mount 9 is introduced furthest into the radial bore 7 in this state, so that the Kollerachsen 12 of the Koller 13 have a minimum distance from the axis of the Lochmatrize 2, therefore, the nip gap 20 is maximum. In this state, the piston 21 of the hydraulic cylinder 16 is maximally extended.

In den Figuren 3 und 4 ist demgegenüber ein Zustand der Pelletierpresse gezeigt, bei welchem der Kollerspalt 20 minimal ist. Um die Pelletierpresse 1 mithilfe der erfindungsgemäßen Kollerverstellvorrichtung aus dem in den Figuren 1 und 2 gezeigten Zustand mit maximalem Kollerspalt in den in den Figuren 3 und 4 gezeigten Zustand mit minimalem Kollerspalt zu überführen, wird mithilfe des Hydraulikzylinders 16 der Kolben 21 in den Zylinder 16 eingefahren. Hierdurch bewegt sich die Zugstange 14 axial aus der Lochmatrize 2 heraus. Dadurch werden auch die auf der Zugstange 14 aufgesetzten Keilaufsätze 15 in dieselbe Richtung bewegt. Aufgrund des zwischen den schrägen Endflächen 10 der Achsenhalterungen 9 und den Keilflächen der Keilaufsätze 15 bestehenden Formschlusses wird die in axialer Richtung wirkende Zugkraft des Hydraulikzylinders 16 in eine in radialer Richtung nach außen wirkende Schubkraft auf die Achsenhalterungen 9 übersetzt. Die Achsenhalterungen 9 bewegen sich somit innerhalb der radialen Bohrungen 7 nach außen. Hierdurch werden die in den axialen Bohrungen 11 der Achsenhalterungen 9 gelagerten Kollerachsen 12 ebenfalls radial nach außen bewegt. Dadurch verringert sich aber der Kollerspalt 20 zwischen der Innenmantelfläche 3 der Lochmatrize 2 und der Außenmantelfläche 19 der Koller 13.In the Figures 3 and 4 In contrast, a state of the pelleting press is shown in which the nip gap 20 is minimal. To the pelleting press 1 using the Kollerverstellvorrichtung invention from the in the FIGS. 1 and 2 shown state with maximum crevasse in the in the Figures 3 and 4 To transfer shown state with minimum nip, is retracted by means of the hydraulic cylinder 16 of the piston 21 in the cylinder 16. As a result, the pull rod 14 moves axially out of the punch die 2. As a result, the attached on the pull rod 14 wedge attachments 15 are moved in the same direction. Due to the between the oblique end surfaces 10th the axis mounts 9 and the wedge surfaces of the wedge attachments 15 existing positive fit, the tensile force acting in the axial direction of the hydraulic cylinder 16 is translated into a radially outwardly acting thrust on the axle mounts 9. The axle holders 9 thus move within the radial bores 7 to the outside. As a result, the bearing in the axial bores 11 of the axle holders 9 Kollerachsen 12 are also moved radially outward. As a result, however, the nip gap 20 between the inner circumferential surface 3 of the perforated die 2 and the outer circumferential surface 19 of the roller 13 is reduced.

In den Figuren nicht dargestellt ist eine Weg- und/oder Positionsmessung der Zugstange 14. Mithilfe der Weg- und/oder Stellungsmessung der Zugstange 14 lässt sich auf einfache Weise, da außerhalb der Lochmatrize 2, der Kollerspalt 20 messen. Zur Messung des Kollerspalts 20 anhand der Stellungsmessung der Zugstange 14 wird eine Umrechnungsfunktion zwischen axialen Stellungen der Zugstange 14 und radialen Kollerspalten 20 ermittelt. Im einfachsten Fall handelt es sich bei der Umrechungsfunktion um einen konstanten Faktor. Diese Berechnungen können in einer speicherprogrammierbaren Steuerung (SPS) erfolgen.Not shown in the figures is a displacement and / or position measurement of the drawbar 14. Using the displacement and / or position measurement of the drawbar 14 can be in a simple way, as measured outside the hole die 2, the nip 20. To measure the nip 20 based on the position measurement of the tie rod 14, a conversion function between axial positions of the tie rod 14 and radial crevices 20 is determined. In the simplest case, the conversion function is a constant factor. These calculations can be done in a programmable logic controller (PLC).

Ebenfalls nicht dargestellt in den Figuren ist eine Blockierung des doppelt wirkenden Hydraulikzylinders 16, die es ermöglicht, einen vorgegebenen Kollerspalt 20 zu halten.Also not shown in the figures is a blockage of the double-acting hydraulic cylinder 16, which makes it possible to keep a predetermined nip 20.

Wohingegen in dem anhand der Figuren beschriebenen Ausführungsbeispiel drei Koller vorgesehen sind, kann die erfindungsgemäße Kollerverstellvorrichtung gleichermaßen für Pelletierpressen mit einer anderen Anzahl von Kollern verwendet werden. Insbesondere ist das System auch für ein Zweikollersystem einsetzbar.Whereas three rollers are provided in the exemplary embodiment described with reference to the figures, the roller adjustment device according to the invention can be used equally for pelleting presses with a different number of rollers. In particular, the system can also be used for a two-roller system.

Anhand der Figuren ist somit ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Verstellvorrichtung zum Variieren des radialen Abstands 20 mindestens eines Kollers 13 relativ zu einer Innenmantelfläche 3 einer Lochmatrize 2 in einer Pelletierpresse 1 vorgeschlagen, welche besonders einfach aufgebaut ist und eine Messung des Kollerspalts 20 auf besonders einfache Weise ermöglicht.With reference to the figures, a preferred embodiment of an adjustment device according to the invention for varying the radial distance 20 of at least one edge 13 is proposed relative to an inner surface 3 of a perforated die 2 in a pelleting press 1, which is particularly simple and a measurement of the nip 20 in a particularly simple manner allows.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Pelletierpressepelleting press
22
Lochmatrizepiercing die
33
InnenmantelflächeInner surface area
44
KolleraufnahmeKoller recording
55
Zylinderabschnittcylinder section
66
scheibenartige Aufsätzedisc-shaped attachments
77
radiale Bohrungradial bore
88th
abgeschrägte Mantelflächebeveled lateral surface
99
Achsenhalterungshaft Tab
1010
schräge Endflächeoblique end face
1111
axiale Bohrungaxial bore
1212
KollerachseKoller axis
1313
KollerRage
1414
Zugstangepull bar
1515
Keilaufsatzwedge attachment
1616
Hydraulikzylinderhydraulic cylinders
1717
Schaberscraper
1818
abgeschrägte Mantelflächebeveled lateral surface
1919
AußenmantelflächeOuter casing surface
2020
KollerspaltKoller gap
2121
Kolbenpiston

Claims (11)

  1. Pelleting press (1) comprising a perforated die (2) and at least one radially movable pan grinder (13), the pelleting press (1) comprising an adjustment device, specifically an adjustment device for varying the radial spacing (20) of at least one pan grinder (13) relative to an inner lateral surface (3) of a perforated die (2) in the pelleting press (1), comprising a receiving device (4) for receiving at least one pan grinder (13) in such a way that the pan grinder (13) can be arranged so as to be radially movable with respect to a perforated die (2), and radial pushing means (10, 15, 9) for radially moving a pan grinder (13) within the receiving device (4), the radial pushing means (10, 15, 9) comprising at least one axial drive element (14), at least one radial output element (9) which can be operatively connected to the pan grinder (13), and transmission means (15) for transmitting an axial force acting on the axial drive element (14) to the radial output element (9), the transmission means being designed as sliding gears (14, 15, 9), characterised in that the axial drive element (14) is formed as a connecting rod that can be moved in the axial direction, the axial drive element (14) comprising at least one axially oriented wedge element (15) and/or cone element that is operatively connected to the output element (9).
  2. Pelleting press (1) according to claim 1, characterised in that a form-fitting connection (10, 15) is formed between the drive element (14) and the output element (9).
  3. Pelleting press (1) according to either of the preceding claims, characterised in that the transmission means are designed in the form of a cross section of the drive element that varies in the axial direction and is operatively connected to the output element (9).
  4. Pelleting press (1) according to claim 3, characterised in that the cross section of the drive element (14, 15) is designed to increase in the axial direction in an even, preferably linear manner.
  5. Pelleting press (1) according to any of the preceding claims, characterised in that the drive element is designed as a rod (14) that projects axially beyond the perforated die (2) when the adjustment device interacts as intended with a perforated die (2).
  6. Pelleting press (1) according to any of the preceding claims, characterised in that drive means (16, 21) are provided for generating an axial force on the drive element (14).
  7. Pelleting press (1) according to any of the preceding claims, characterised in that the drive means (16, 21) comprise a preferably double-acting hydraulic cylinder (16).
  8. Pelleting press (1) according to any of the preceding claims, characterised in that means are provided for gauging the position of the axial drive element.
  9. Pelleting press (1) according to claim 8, characterised in that the means for gauging the position can be arranged axially outside the perforated die (2) in a state in which the adjustment device interacts as intended with the perforated die (2).
  10. Pelleting press (1) according to any of the preceding claims, characterised in that the output element (9) is designed as a holding device (9) for mounting the pan grinder (13), preferably rotatably.
  11. Pelleting press (1) according to any of the preceding claims, characterised in that means are provided for blocking the drive element (14) in an axial position.
EP09001650.2A 2008-03-26 2009-02-06 Roller adjustment device Active EP2105292B1 (en)

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WO2012146700A1 (en) 2011-04-29 2012-11-01 Andritz Ag A pellet mill with an feed system and a method of forming pelleted material
US8974710B2 (en) 2011-04-29 2015-03-10 Andritz Ag Pellet mill having improved construction
DE102018118040A1 (en) * 2018-07-25 2020-01-30 Franz Blieninger Guide device for pellet presses

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NL8901130A (en) * 1989-05-03 1990-12-03 Aarsen Maschf Bv GRAIN PRESS.
NL1004319C2 (en) * 1996-10-18 1998-04-21 Pelleting Technologie Nederlan Pelleteer.
DE10241118A1 (en) * 2002-09-03 2004-03-18 Bühler AG pellet mill
CA2515751C (en) * 2003-02-21 2010-06-15 Sprout-Matador A/S Roller adjustment apparatus for an extrusion mill

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DE102008015617B4 (en) 2021-01-14
EP2105292A1 (en) 2009-09-30

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