EP3169513B1 - Strainer bar and method for producing a strainer bar - Google Patents

Strainer bar and method for producing a strainer bar Download PDF

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Publication number
EP3169513B1
EP3169513B1 EP15752910.8A EP15752910A EP3169513B1 EP 3169513 B1 EP3169513 B1 EP 3169513B1 EP 15752910 A EP15752910 A EP 15752910A EP 3169513 B1 EP3169513 B1 EP 3169513B1
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Prior art keywords
spacer
strainer
cage
cage bar
pressing
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EP15752910.8A
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German (de)
French (fr)
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EP3169513A1 (en
Inventor
Rolf SPECK
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Harburg Freudenberger Maschinenbau GmbH
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Harburg Freudenberger Maschinenbau GmbH
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Priority to RS20211544A priority Critical patent/RS62724B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers
    • B30B9/267—Strainer bars; Spacers

Definitions

  • the invention relates to a method for the production of a strainer rod for the formation of a strainer basket for the delimitation of a compression space of a device for pressing liquids, the strainer rod having a base body on which an armor with at least one wear surface is fixed and in which at least one spacer element that is positioned laterally to a longitudinal extension of the strainer rod in such a way that it rises above a side surface of the strainer rod and in which the at least one spacer element is materially connected to the basic element of the strainer rod.
  • a strainer rod with a welded-on bolt and a manufacturing method for a strainer rod with a welded-on bolt are explained.
  • the strainer rod is intended for a substantially cylindrical strainer basket composed of a plurality of strainer rods for the purpose of delimiting a compression space in a screw press for processing animal or vegetable products into meat meal and animal fat or vegetable oils and the like.
  • the invention relates in particular to a method for producing a strainer rod which is delimited by at least one pressing edge in the area of a wear surface and which has at least one spacer element (bolt) rising above the side surface in the area of at least one side surface of a base body.
  • the invention also relates to a strainer rod produced according to the method according to the invention for a device for pressing off liquids, which is delimited by at least one pressing edge in the area of a wear surface and which has at least one spacer element rising above the side surface in the area of at least one side surface of a base body.
  • the invention finally relates to a device for squeezing liquids, which has at least one strainer rod manufactured according to the method according to the invention, which is delimited by at least one pressing edge in the area of a wear surface and which has at least one spacer element rising above the side surface in the area of at least one side surface of a base body having.
  • Strainer bars of the type mentioned in the introduction are used in the field of devices for pressing liquid substances from substances introduced into the device.
  • liquid substances can be squeezed out of oily fruits, animal carcasses or slaughterhouse waste.
  • the devices for pressing are designed like a drum and the strainer bars extend in a longitudinal direction of the drum.
  • the substances to be processed are also transported in this longitudinal direction.
  • the Residual substances are discharged from the interior of the drum with almost no moisture.
  • a transport through the drum takes place using a pressure and transport screw.
  • the pressing process between the boundary surfaces of the screw flights of the transport screw and the strainer rods presses off the liquids contained in the input substances.
  • the strainer bars are arranged with gap-like spacings relative to one another.
  • the cross-sectional area of the screw thread is reduced starting from the inlet in the direction of the outlet.
  • the gaps between the strainer bars are usually given by spacer elements.
  • the spacer elements are introduced manually as spacer plates, for example; it is also already known to connect such spacer plates to the strainer bars by welding. Due to the considerable forces acting during the pressing process, these arrangement methods for the spacer elements have the disadvantage that the spacer elements can slip, which causes the risk of the strainer rods falling out completely. Carrying out welds also does not offer sufficient security against slipping due to the risk of the welds tearing off.
  • the spacer elements are formed in one piece with the strainer rods and are produced by milling or grinding off the excess materials. Such a production avoids slipping and leads to a high stability of the overall device, but with regard to the large number of strainer bars used, a considerable increase in production costs is caused compared to the use of loose spacer elements.
  • the spacer elements are applied to the base body by a coating process, which is connected to the base body in the entire area of its boundary facing the side surface of the base body.
  • the coating of the base body with the spacer elements can be carried out using different methods.
  • the spacer element can be applied to the base body by build-up welding, laser welding or electrolytic coating.
  • the disadvantage of these types of coating is the high energy input into the base material, which regularly leads to plastic deformations, which in turn have a negative effect on the component geometry.
  • a strainer rod for a device for squeezing off liquids is already known, in which armor with a wear surface is arranged on a base body. Positioning of the strainer rod in a strainer basket is supported by lateral spacer elements.
  • strainer bars for arrangement in strainer baskets are also in the DE 103 49 771 A1 as well as the DE 102 10 453 A1 described.
  • spacer elements to the associated strainer rods by spot welding in the area of strainer bars for a strainer press.
  • the spacer elements are each designed as sheet metal bent at right angles, with a longer leg being used to connect to the respective strainer element and the shorter leg being used to provide the intended distances.
  • the object of the present invention is to improve a method of the type mentioned in the introduction in such a way that a still inexpensive production of strainer bars while maintaining the component geometry during the Manufacturing process and at the same time high reliability when performing the pressing process is made possible.
  • strainer bars are arranged next to one another within a strainer basket.
  • the strainer bars have a defined spacing relative to one another. This distance can be specified using spacer elements.
  • prefabricated spacer elements are welded to the strainer rod.
  • electric welding preferably spot welding.
  • the spacer elements are typically designed in the shape of bolts. When the underside of the bolt facing the strainer rod approaches the surface of the strainer rod, an arc ignites due to the applied electrical voltage and the spacer element is welded to the strainer rod.
  • a machining process is preferably carried out as post-processing in order to bring the spacer element into the desired dimension, or only a sawing off or cutting off of excess lengths of the spacer elements takes place.
  • the spacer elements are dimensioned exactly, which can be predetermined, and thereby also an exact adherence to a predetermined spacing distance between the strainer bars is achieved.
  • FIG. 1 shows the cross section through a strainer rod (1) in a first embodiment with at least one spacer element (30).
  • the strainer rod (1) is essentially formed by a base body (20), which basically corresponds to a metallic profile, and armor (10).
  • the armor (10) is preferably materially connected, for example by welding, to the base body (20) and has a wear surface (11) on its longitudinal edge, which preferably faces the press screw of the press device, on which a press edge (12) is attached. connects.
  • the pressing edge (12) is laterally delimited by a side surface (13) which is inclined by an angle X with respect to the vertical plane formed from the at least one end face of the spacer element (30).
  • the wear surface (11) is opposite the connecting surface (14) at the angle Y inclined.
  • the at least one spacer element (30) is in accordance with the exemplary embodiment Figure 1 designed as a round profile and can, for example, have a diameter of 4 mm.
  • the invention provides in particular electrical spot welding by pulse welding, in which the welding current is modulated in a pulse-like manner in order to reduce the heat input into the rod element (20) by this welding process. to as small a local area as possible.
  • the heat input into the base body (20) must be kept as low as possible and locally limited so that the distortion caused by thermal stresses is minimized and, on the other hand, the welding of the armor (10 ) adjacent spacer element (30), the heating limited as possible to a small area at the welding point is important in order to put as little thermal load as possible on the connecting surface (14) of the base body (20) and armor (10). If the thermal load on the connection surface (14) is too great, there is a risk that the strength of the connection will decrease and the armor (10) will come off, which can cause considerable device damage to the press.
  • FIG. 11 shows a side view according to viewing direction II in FIG Figure 1 .
  • the spacer elements (30) are arranged symmetrically in this embodiment.
  • Figure 3 shows a region of the cross-section according to FIG Figure 1 on a larger scale.
  • the gap width Z is the resulting inside width between adjacently arranged strainer bars (1) on the side surface (13) inside the strainer basket.
  • the gap width Z is primarily influenced by the angle of the side surface X and the length of the at least one spacer element (30) and the thereby determined position of the end face of the spacer element (30).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Seiherstabes zur Bildung eines Seiherkorbes für die Eingrenzung eines Kompressionsraumes einer Vorrichtung zum Abpressen von Flüssigkeiten, wobei der Seiherstab einen Grundkörper aufweist, an dem eine Panzerung mit wenigstens einer Verschleißoberfläche festgelegt ist und bei dem wenigstens ein Distanzelement, das seitlich zu einer Längserstreckung des Seiherstabes derart positioniert ist, dass es sich über eine Seitenfläche des Seiherstabes erhebt sowie bei dem das wenigstens eine Distanzelement stoffschlüssig mit dem Grundelement des Seiherstabes verbunden ist.The invention relates to a method for the production of a strainer rod for the formation of a strainer basket for the delimitation of a compression space of a device for pressing liquids, the strainer rod having a base body on which an armor with at least one wear surface is fixed and in which at least one spacer element that is positioned laterally to a longitudinal extension of the strainer rod in such a way that it rises above a side surface of the strainer rod and in which the at least one spacer element is materially connected to the basic element of the strainer rod.

Erfindungsgemäß werden ein Seiherstab mit aufgeschweißtem Bolzen und ein Herstellverfahren für einen Seiherstab mit aufgeschweißtem Bolzen erläutert.According to the invention, a strainer rod with a welded-on bolt and a manufacturing method for a strainer rod with a welded-on bolt are explained.

Der Seiherstab ist für einen aus einer Mehrzahl von Seiherstäben zusammengesetzten im Wesentlichen zylinderförmigen Seiherkorb zwecks Eingrenzung eines Kompressionsraumes in einer Schneckenpresse für die Verarbeitung von tierischen bzw. pflanzlichen Produkten zu Fleischmehl und Tierfett bzw. pflanzlichen Ölen und dergleichen vorgesehen.The strainer rod is intended for a substantially cylindrical strainer basket composed of a plurality of strainer rods for the purpose of delimiting a compression space in a screw press for processing animal or vegetable products into meat meal and animal fat or vegetable oils and the like.

Die Erfindung betrifft insbesondere ein Verfahren zur Herstellung eines Seiherstabes, der im Bereich einer Verschleißoberfläche von mindestens einer Presskante begrenzt ist und der im Bereich mindestens einer Seitenfläche eines Grundkörpers mindestens ein sich über die Seitenfläche erhebendes Distanzelement (Bolzen) aufweist.The invention relates in particular to a method for producing a strainer rod which is delimited by at least one pressing edge in the area of a wear surface and which has at least one spacer element (bolt) rising above the side surface in the area of at least one side surface of a base body.

Die Erfindung betrifft darüber hinaus einen gemäß dem erfindungsgemäßen Verfahren hergestellten Seiherstab für eine Vorrichtung zum Abpressen von Flüssigkeiten, der im Bereich einer Verschleißoberfläche von mindestens einer Presskante begrenzt ist und der im Bereich mindestens einer Seitenfläche eines Grundkörpers mindestens ein sich über die Seitenfläche erhebendes Distanzelement aufweist.The invention also relates to a strainer rod produced according to the method according to the invention for a device for pressing off liquids, which is delimited by at least one pressing edge in the area of a wear surface and which has at least one spacer element rising above the side surface in the area of at least one side surface of a base body.

Die Erfindung betrifft schließlich eine Vorrichtung zum Abpressen von Flüssigkeiten, die mindestens einen gemäß dem erfindungsgemäßen Verfahren hergestellten Seiherstab aufweist, der im Bereich einer Verschleißoberfläche von mindestens einer Presskante begrenzt ist und der im Bereich mindestens einer Seitenfläche eines Grundkörpers mindestens ein sich über die Seitenfläche erhebendes Distanzelement aufweist.The invention finally relates to a device for squeezing liquids, which has at least one strainer rod manufactured according to the method according to the invention, which is delimited by at least one pressing edge in the area of a wear surface and which has at least one spacer element rising above the side surface in the area of at least one side surface of a base body having.

Seiherstäbe der einleitend genannten Art werden im Bereich von Vorrichtungen zum Abpressen von flüssigen Stoffen aus in die Vorrichtung eingebrachten Substanzen verwendet. Es kann beispielsweise ein Abpressen von flüssigen Stoffen aus ölhaltigen Früchten, Tierkadavern oder Schlachtabfällen erfolgen. Die Vorrichtungen zum Abpressen sind trommelartig ausgebildet und die Seiherstäbe erstrecken sich in einer Längsrichtung der Trommel. In dieser Längsrichtung erfolgt auch ein Transport der zu verarbeitenden Substanzen. Im Bereich eines Trommelausganges werden die Restsubstanzen nahezu feuchtigkeitsfrei aus dem Trommelinnenraum ausgetragen. Ein Transport durch die Trommel hindurch erfolgt unter Verwendung einer Druck-und Transportschnecke.Strainer bars of the type mentioned in the introduction are used in the field of devices for pressing liquid substances from substances introduced into the device. For example, liquid substances can be squeezed out of oily fruits, animal carcasses or slaughterhouse waste. The devices for pressing are designed like a drum and the strainer bars extend in a longitudinal direction of the drum. The substances to be processed are also transported in this longitudinal direction. In the area of a drum exit, the Residual substances are discharged from the interior of the drum with almost no moisture. A transport through the drum takes place using a pressure and transport screw.

Während des Transportes der Substanzen durch die Trommel hindurch erfolgt durch den Pressvorgang zwischen den Begrenzungsflächen der Schneckengänge der Transportschnecke und den Seiherstäben ein Abpressen der in den Eingangssubstanzen enthaltenen Flüssigkeiten. Zur Ermöglichung eines Abfließens der ausgepressten Flüssigkeiten sind die Seiherstäbe mit spaltartigen Abständen relativ zueinander angeordnet. Zur Gewährleistung eines optimalen Verlaufes des Abpressvorganges verkleinert sich die Querschnittfläche des Schneckenganges ausgehend vom Einlass in Richtung auf den Auslass.During the transport of the substances through the drum, the pressing process between the boundary surfaces of the screw flights of the transport screw and the strainer rods presses off the liquids contained in the input substances. To enable the squeezed-out liquids to drain off, the strainer bars are arranged with gap-like spacings relative to one another. To ensure an optimal course of the squeezing process, the cross-sectional area of the screw thread is reduced starting from the inlet in the direction of the outlet.

Die Spalte zwischen den Seiherstäben werden üblicher Weise durch Distanzelemente vorgegeben. Gemäß bekannten Ausführungsformen werden die Distanzelemente beispielsweise manuell als Abstandsplättchen eingebracht, ebenfalls ist es bereits bekannt, derartige Distanzplättchen durch Verschweißung mit den Seiherstäben zu verbinden. Aufgrund der erheblichen während des Pressvorganges einwirkenden Kräfte haben diese Anordnungsverfahren für die Distanzelemente aber den Nachteil, dass ein Verrutschen der Distanzelemente hervorgerufen werden kann, das die Gefahr eines völligen Herausfallens der Seiherstäbe verursacht. Auch die Durchführung von Verschweißungen bietet aufgrund der Gefahr eines Abreißens der Verschweißungen keine ausreichende Sicherheit gegenüber einem Verrutschen.The gaps between the strainer bars are usually given by spacer elements. According to known embodiments, the spacer elements are introduced manually as spacer plates, for example; it is also already known to connect such spacer plates to the strainer bars by welding. Due to the considerable forces acting during the pressing process, these arrangement methods for the spacer elements have the disadvantage that the spacer elements can slip, which causes the risk of the strainer rods falling out completely. Carrying out welds also does not offer sufficient security against slipping due to the risk of the welds tearing off.

Gemäß einem weiteren bekannten Herstellungsverfahren sind die Distanzelemente einteilig mit den Seiherstäben ausgebildet und werden durch Abfräsen oder Abschleifen der überschüssigen Materialien hergestellt. Eine derartige Fertigung vermeidet zwar ein Verrutschen und führt zu einer hohen Stabilität der Gesamtvorrichtung, im Hinblick auf die Vielzahl der verwendeten Seiherstäbe wird gegenüber einer Verwendung von losen Distanzelementen aber eine erhebliche Erhöhung der Fertigungskosten verursacht.According to a further known production method, the spacer elements are formed in one piece with the strainer rods and are produced by milling or grinding off the excess materials. Such a production avoids slipping and leads to a high stability of the overall device, but with regard to the large number of strainer bars used, a considerable increase in production costs is caused compared to the use of loose spacer elements.

Schließlich werden gemäß einem weiteren Herstellungsverfahren die Distanzelemente durch einen Beschichtungsvorgang auf den Grundkörper aufgetragen, der im gesamten Bereich seiner der Seitenfläche des Grundkörpers zugewandten Begrenzung mit dem Grundkörper verbunden ist.Finally, according to a further production method, the spacer elements are applied to the base body by a coating process, which is connected to the base body in the entire area of its boundary facing the side surface of the base body.

Die Durchführung der Beschichtung des Grundkörpers mit den Distanzelementen kann durch unterschiedliche Verfahren erfolgen. Beispielsweise kann das Distanzelement durch Auftragsschweißen, Laserverschweißung oder elektrolytisches Beschichten auf den Grundkörper aufgebracht werden. Nachteil dieser Beschichtungsarten ist allerdings der hohe Energieeintrag in das Grundmaterial, was regelmäßig zu plastischen Verformungen führt, die sich wiederum nachteilig auf die Bauteilgeometrie auswirkt.The coating of the base body with the spacer elements can be carried out using different methods. For example, the spacer element can be applied to the base body by build-up welding, laser welding or electrolytic coating. However, the disadvantage of these types of coating is the high energy input into the base material, which regularly leads to plastic deformations, which in turn have a negative effect on the component geometry.

Aus der DE 103 29 952 A1 ist bereits ein Seiherstab für eine Vorrichtung zum Abpressen von Flüssigkeiten bekannt, bei dem auf einem Grundkörper eine Panzerung mit einer Verschleißoberfläche angeordnet ist. Über seitliche Distanzelemente wird eine Positionierung des Seiherstabes in einem Seiherkorb unterstützt.From the DE 103 29 952 A1 a strainer rod for a device for squeezing off liquids is already known, in which armor with a wear surface is arranged on a base body. Positioning of the strainer rod in a strainer basket is supported by lateral spacer elements.

Ähnliche Seiherstäbe zur Anordnung in Seiherkörben werden auch in der DE 103 49 771 A1 sowie der DE 102 10 453 A1 beschrieben.Similar strainer bars for arrangement in strainer baskets are also in the DE 103 49 771 A1 as well as the DE 102 10 453 A1 described.

Aus der US 4289065 A ist es bereits bekannt, im Bereich von Seiherstäben für eine Seiherpresse Distanzelemente durch ein Punktschweißen mit den zugeordneten Seiherstäben zu verbinden. Die Distanzelemente sind hierbei jeweils als rechtwinklig umgebogene Bleche gestaltet, wobei ein längerer Schenkel zur Verbindung mit dem jeweiligen Seiherelement und der kürzere Schenkel zur Bereitstellung der vorgesehenen Distanzen dient.From the US 4289065 A It is already known to connect spacer elements to the associated strainer rods by spot welding in the area of strainer bars for a strainer press. The spacer elements are each designed as sheet metal bent at right angles, with a longer leg being used to connect to the respective strainer element and the shorter leg being used to provide the intended distances.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren der einleitend genannten Art derart zu verbessern, dass eine nach wie vor preiswerte Fertigung von Seiherstäben bei gleichzeitigem Erhalt der Bauteilgeometrie während des Fertigungsverfahrens und gleichzeitig hoher Zuverlässigkeit bei der Durchführung des Abpressvorganges ermöglicht wird.The object of the present invention is to improve a method of the type mentioned in the introduction in such a way that a still inexpensive production of strainer bars while maintaining the component geometry during the Manufacturing process and at the same time high reliability when performing the pressing process is made possible.

Diese Aufgabe wird erfindungsgemäß durch die Merkmalskombination von Patentanspruch 1 gelöst.According to the invention, this object is achieved by the combination of features of patent claim 1.

In der Regel wird innerhalb eines Seiherkorbes eine Vielzahl von Seiherstäben nebeneinander angeordnet. Für eine zuverlässige Durchführung der Pressvorgänge ist es vorteilhaft, wenn die Seiherstäbe relativ zueinander einen definierten Abstand aufweisen. Dieser Abstand kann unter Verwendung von Distanzelementen vorgegeben werden.As a rule, a large number of strainer bars are arranged next to one another within a strainer basket. For a reliable implementation of the pressing processes, it is advantageous if the strainer bars have a defined spacing relative to one another. This distance can be specified using spacer elements.

Erfindungsgemäß werden vorgefertigte Distanzelemente mit dem Seiherstab verschweißt. Insbesondere ist erfindungsgemäß vorgesehen, ein Elektroschweißen, vorzugsweise ein Punktschweißen, durchzuführen. Eine Vielzahl von Distanzelementen wird bei diesem Verfahren in einem Magazin bevorratet und der Schweißeinrichtung zugeführt. Die Distanzelemente sind typischerweise bolzenförmig ausgeführt. Bei einer Annäherung der dem Seiherstab zugewandten Unterseite des Bolzens an die Oberfläche des Seiherstabes zündet aufgrund der angelegten elektrischen Spannung ein Lichtbogen und das Distanzelement wird mit dem Seiherstab verschweißt.According to the invention, prefabricated spacer elements are welded to the strainer rod. In particular, it is provided according to the invention to carry out electric welding, preferably spot welding. With this method, a large number of spacer elements are stored in a magazine and the Welding device fed. The spacer elements are typically designed in the shape of bolts. When the underside of the bolt facing the strainer rod approaches the surface of the strainer rod, an arc ignites due to the applied electrical voltage and the spacer element is welded to the strainer rod.

Vorzugsweise erfolgt als Nachbearbeitung ein Zerspanungsprozess um das Distanzelement in die gewünschte Dimension zu bringen oder es erfolgt nur ein Absägen oder Abschneiden überschüssiger Längen der Distanzelemente. Hierdurch wird eine exakt vorgebbare Dimensionierung der Distanzelemente und dadurch auch eine exakte Einhaltung eines vorgegebenen Distanzabstandes zwischen den Seiherstäben erreicht.A machining process is preferably carried out as post-processing in order to bring the spacer element into the desired dimension, or only a sawing off or cutting off of excess lengths of the spacer elements takes place. As a result, the spacer elements are dimensioned exactly, which can be predetermined, and thereby also an exact adherence to a predetermined spacing distance between the strainer bars is achieved.

In den Zeichnungen sind Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigen:

Fig. 1
einen Querschnitt durch einen Seiherstab mit Distanzelement,
Fig. 2
eine Seitenansicht gemäß Blickrichtung II in Figur 1 und
Fig. 3
eine teilweise Darstellung eines vergrößerten Querschnittes.
Exemplary embodiments of the invention are shown schematically in the drawings. Show it:
Fig. 1
a cross section through a strainer rod with spacer element,
Fig. 2
a side view according to viewing direction II in Figure 1 and
Fig. 3
a partial illustration of an enlarged cross section.

Figur 1 zeigt den Querschnitt durch einen Seiherstab (1) in einem ersten Ausführungsbeispiel mit wenigstens einem Distanzelement (30). Der Seiherstab (1) ist gebildet im Wesentlichen durch einen Grundkörper (20), der dem Grunde nach einem metallischen Profil entspricht, sowie einer Panzerung (10). Die Panzerung (10) ist vorzugsweise stoffschlüssig, beispielsweise durch Schweißen, mit dem Grundkörper (20) verbunden und weist an ihrer Längskante, die vorzugsweise der Pressschnecke der Pressvorrichtung zugewandt ist, eine Verschleißoberfläche (11) auf, an die sich eine Presskante (12) anschließt. Figure 1 shows the cross section through a strainer rod (1) in a first embodiment with at least one spacer element (30). The strainer rod (1) is essentially formed by a base body (20), which basically corresponds to a metallic profile, and armor (10). The armor (10) is preferably materially connected, for example by welding, to the base body (20) and has a wear surface (11) on its longitudinal edge, which preferably faces the press screw of the press device, on which a press edge (12) is attached. connects.

Die Presskante (12) erfährt eine seitliche Begrenzung durch eine Seitenfläche (13), welche gegenüber der lotrechten Ebene gebildet aus der wenigstens einen Stirnseitenfläche des Distanzelementes (30) um einen Winkel X geneigt ist. Die Verschleißoberfläche (11) ist gegenüber der Verbindungsfläche (14) um den Winkel Y geneigt. Beide die den Seiherstab (1) bildenden Elemente (10, 20) und das wenigstens eine Distanzelement (30) weisen bevorzugt eine Mindesthärte von 55 + 4 HRC auf und werden durch einen C45-Werkstoff realisiert.The pressing edge (12) is laterally delimited by a side surface (13) which is inclined by an angle X with respect to the vertical plane formed from the at least one end face of the spacer element (30). The wear surface (11) is opposite the connecting surface (14) at the angle Y inclined. Both the elements (10, 20) forming the strainer rod (1) and the at least one spacer element (30) preferably have a minimum hardness of 55 + 4 HRC and are made from a C45 material.

Das wenigstens eine Distanzelement (30) ist in dem Ausführungsbeispiel gemäß Figur 1 als Rundprofil ausgeführt und kann beispielsweise einen Durchmesser von 4 mm aufweisen. Um das Distanzelement (30) an dem Grundkörper (20) des Seiherstabes (1) festzulegen, sieht die Erfindung insbesondere ein elektrisches Punktschweißen durch Impulsschweißung vor, bei dem der Schweißstrom impulsartig moduliert wird, um die Wärmeeinbringung durch diesen Schweißprozess in das Stabelement (20) auf einen möglichst kleinen lokalen Bereich zu begrenzen.The at least one spacer element (30) is in accordance with the exemplary embodiment Figure 1 designed as a round profile and can, for example, have a diameter of 4 mm. In order to fix the spacer element (30) on the base body (20) of the strainer rod (1), the invention provides in particular electrical spot welding by pulse welding, in which the welding current is modulated in a pulse-like manner in order to reduce the heat input into the rod element (20) by this welding process. to as small a local area as possible.

Dies ist insbesondere aus zwei Gründen wichtig: Zum einen muss die Wärmeeinbringung in den Grundkörper (20) so gering wie möglich gehalten und lokal begrenzt werden, damit der Verzug durch Wärmespannungen minimiert wird und zum anderen ist vor allem bei der Verschweißung des der Panzerung (10) benachbarten Distanzelementes (30) die möglichst auf ein kleines Gebiet an der Schweißstelle begrenzte Erwärmung wichtig, um die Verbindungsfläche (14) von Grundkörper (20) und Panzerung (10) möglichst wenig thermisch zu belasten. Ist die thermische Belastung der Verbindungsfläche (14) zu groß ist die Gefahr gegeben, dass die Festigkeit der Verbindung sinkt und sich die Panzerung (10) löst, was erheblich Vorrichtungsschäden an der Presse verursachen kann.This is particularly important for two reasons: On the one hand, the heat input into the base body (20) must be kept as low as possible and locally limited so that the distortion caused by thermal stresses is minimized and, on the other hand, the welding of the armor (10 ) adjacent spacer element (30), the heating limited as possible to a small area at the welding point is important in order to put as little thermal load as possible on the connecting surface (14) of the base body (20) and armor (10). If the thermal load on the connection surface (14) is too great, there is a risk that the strength of the connection will decrease and the armor (10) will come off, which can cause considerable device damage to the press.

Figur 2 zeigt eine Seitenansicht gemäß Blickrichtung II in Figur 1. Die Distanzelemente (30) sind in diesem Ausführungsbeispiel symmetrisch angeordnet. Figure 2 FIG. 11 shows a side view according to viewing direction II in FIG Figure 1 . The spacer elements (30) are arranged symmetrically in this embodiment.

Figur 3 zeigt einen Bereich des Querschnittes gemäß Figur 1 in vergrößertem Maßstab. Die Spaltenweite Z ist die sich ergebende Lichte Weite zwischen benachbart angeordneten Seiherstäben (1) an der Seitenfläche (13) innerhalb des Seiherkorbes. Die Spaltweite Z ist primär beeinflusst durch den Winkel der Seitenfläche X sowie die Länge des wenigstens einen Distanzelementes (30) und der dadurch festgelegten Lage der Stirnseitenfläche des Distanzelementes (30). Figure 3 shows a region of the cross-section according to FIG Figure 1 on a larger scale. The gap width Z is the resulting inside width between adjacently arranged strainer bars (1) on the side surface (13) inside the strainer basket. The gap width Z is primarily influenced by the angle of the side surface X and the length of the at least one spacer element (30) and the thereby determined position of the end face of the spacer element (30).

Claims (15)

  1. Method for producing a cage bar (1) for forming a strainer cage for the limitation of a compression space of an apparatus for extraction of liquids by pressing, wherein the cage bar (1) has a base body (20) on which a reinforcement plating (10) with at least one wear surface (11) is fixed and for which at least one spacer (30) is positioned laterally in relation to a longitudinal extent of the cage bar (1) in such a way that said spacer is elevated above a side surface of the cage bar (1) and for which the at least one spacer (30) is connected in a materially bonded manner to the base element (20) of the cage bar, wherein the at least one spacer (30) is connected in a materially bonded manner to the base element (20) of the cage bar by way of electrical pulsed spot welding, so that the input of heat into the base body (20) of the cage bar (1) during welding is minimized, characterized in that, after the welding of the at least one spacer (30) to the base element (20), the at least one spacer (30) is brought to the desired dimension by way of a chip-removing cutting process.
  2. Method according to Claim 1, characterized in that the reinforcement plating (10) is connected in a materially bonded or form-fitting manner to the base body (20) of the cage bar (1) by way of a connection surface (14).
  3. Method according to Claim 2, characterized in that the reinforcement plating (10) is provided with at least one first side surface (13).
  4. Method according to Claim 3, characterized in that, in relation to the vertical plane formed from the at least one face-side surface of the spacer (30), the side surface (13) of the reinforcement plating (10) is inclined by the angle X.
  5. Method according to Claim 4, characterized in that the angle X is provided with a value range of 3 degrees to 6 degrees.
  6. Method according to Claim 1, characterized in that the at least one wear surface (11) of the reinforcement plating (10) is arranged opposite the connection surface (14) and is delimited by a pressing edge (12).
  7. Method according to Claim 6, characterized in that the at least one spacer (30) is elevated above a side surface of the cage bar (1) in such a way that the vertical plane formed from the at least one face-side surface of the at least one spacer (30) is arranged offset from the pressing edge (13) by the gap dimension Z.
  8. Method according to Claim 7, characterized in that the gap dimension Z has a value range of 0.1 mm to 1.0 mm.
  9. Method according to Claim 1, characterized in that, in relation to a plane parallel to the connection surface (14), the at least one wear surface (11) of the reinforcement plating (10) is inclined by the angle Y.
  10. Method according to Claim 9, characterized in that the angle Y has a value range of 3 degrees to 6 degrees.
  11. Method according to Claim 1, characterized in that a plurality of spacers (30) is positioned symmetrically in relation to the lateral longitudinal extent of the cage bar (1).
  12. Method according to Claim 1, characterized in that the at least one spacer (30) is formed by round stock.
  13. Method according to Claim 1, characterized in that the elements (10, 20, 30) of the cage bar (1) are formed by a C45 material with a hardness of 55 + 4 HRC.
  14. Strainer cage for the limitation of a compression space of the apparatus for extraction of liquids by pressing, characterized in that the strainer cage is formed by a plurality of cage bars (1) which are produced according to Patent Claim 1.
  15. Apparatus for extraction of liquids by pressing, characterized by a strainer cage according to Claim 14.
EP15752910.8A 2014-07-17 2015-06-29 Strainer bar and method for producing a strainer bar Active EP3169513B1 (en)

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RS20211544A RS62724B1 (en) 2014-07-17 2015-06-29 Strainer bar and method for producing a strainer bar

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DE102014010499 2014-07-17
PCT/DE2015/000339 WO2016008466A1 (en) 2014-07-17 2015-06-29 Strainer bar and method for producing a strainer bar

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EP3169513A1 EP3169513A1 (en) 2017-05-24
EP3169513B1 true EP3169513B1 (en) 2021-10-13

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EP (1) EP3169513B1 (en)
DE (2) DE102015008595A1 (en)
DK (1) DK3169513T3 (en)
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WO (1) WO2016008466A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289065A (en) * 1980-03-21 1981-09-15 The French Oil Mill Machinery Company Spacers for cage presses

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908016C3 (en) * 1968-06-14 1973-10-18 Institut Elektroswarki Imeni E.O. Patona, Kiew (Sowjetunion) Pulse generator for the more make arc welding
DE29811871U1 (en) * 1998-05-12 1998-10-08 Hasenbein, Günter, Dipl.-Ing., 22946 Großensee Strainer bar for strainer basket of a screw press
DE20104282U1 (en) * 2001-03-13 2002-02-07 Hasenbein, Günter, Dipl.-Ing., 22946 Großensee Strainer bar for strainer basket of a screw press
DE10210453B4 (en) * 2002-03-09 2022-05-05 Harburg-Freudenberger Maschinenbau Gmbh Process for the production of colander rods, colander rod with spacer element and device for squeezing
DE10329952B4 (en) * 2003-07-03 2022-06-02 Harburg-Freudenberger Maschinenbau Gmbh Colander with spacer element and device for squeezing
DE10349771A1 (en) * 2003-10-24 2005-05-25 Thyssenkrupp Elastomertechnik Gmbh Press bar is mounted longitudinally in drum of drum press for extracting liquid from e.g. oily fruits and nuts and has prefabricated anti-wear strip mounted on pressing edge at inner end of base strip

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289065A (en) * 1980-03-21 1981-09-15 The French Oil Mill Machinery Company Spacers for cage presses

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WO2016008466A1 (en) 2016-01-21
DE102015008595A1 (en) 2016-01-21
DK3169513T3 (en) 2022-01-17
DE112015003300A5 (en) 2017-04-13
RS62724B1 (en) 2022-01-31
EP3169513A1 (en) 2017-05-24

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