WO2001008498A1 - Roller for applying at least one flowable substance on dough - Google Patents

Roller for applying at least one flowable substance on dough Download PDF

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Publication number
WO2001008498A1
WO2001008498A1 PCT/AT2000/000205 AT0000205W WO0108498A1 WO 2001008498 A1 WO2001008498 A1 WO 2001008498A1 AT 0000205 W AT0000205 W AT 0000205W WO 0108498 A1 WO0108498 A1 WO 0108498A1
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WO
WIPO (PCT)
Prior art keywords
roller
medium
dough
channel
sintered body
Prior art date
Application number
PCT/AT2000/000205
Other languages
German (de)
French (fr)
Inventor
Peter Lambauer
Thomas Neuhold
Original Assignee
König Maschinen Gesellschaft M.B.H.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by König Maschinen Gesellschaft M.B.H. filed Critical König Maschinen Gesellschaft M.B.H.
Priority to AU64143/00A priority Critical patent/AU6414300A/en
Priority to EP00951085A priority patent/EP1233675A1/en
Publication of WO2001008498A1 publication Critical patent/WO2001008498A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C9/00—Other apparatus for handling dough or dough pieces
    • A21C9/04—Apparatus for spreading granular material on, or sweeping or coating the surfaces of, pieces or sheets of dough

Definitions

  • the invention relates to a roller for applying at least one flowable medium to dough, which is guided past the roller while touching the shell of the roller
  • the invention has for its object to improve a roller of the type described in such a way that the application of the medium takes place more uniformly and more precisely and also the risk of contamination of the machine parts carrying the dough is lower.
  • the invention achieves this object in that There is at least one channel for the supply of the medium to the roller, which runs at least over a large part of the axial length of the roller, and that the roller jacket surrounding this channel is designed as a sintered body made of food-safe, dough-repellent material which is permeable to this medium
  • the medium to be applied to the dough is therefore not supplied to the circumference of the roller from the outside onto the roller shell, but from the inside via the channel or several such channels arranged inside the roller.
  • the medium introduced into this channel or these channels is expedient vacuum and therefore passes from this channel or channels through the jacket to the outer circumference of the roller.
  • the permeability of the material forming this roller jacket makes this possible, whereby sintered bodies have proven to be particularly suitable. Such sintered bodies can be designed with the necessary strength without any problems in order to withstand the medium pressure and the porosity required for the desired permeability can be reliably obtained during production.
  • the medium diffusing through the roll shell builds a film on the surface of the roll from the flowable medium, which through contact with the dough to be treated is transferred to this In the case of Backol as a flowable medium, the applied oil film the flow behavior of the dough through the dough leading or shaping machine parts, e.g.
  • the flowable medium can also, e.g. Trennol, Olive oil, egg white, honey, sugar solution or another solution, but also oxygen or cooking gases with which the dough properties are to be influenced, further substances (in particular oils) to improve the taste, but also moisturizers, in particular water, as preparation for subsequent sprinkling or Dusting, for example with poppy seeds, sesame, etc., or sodium hydroxide solution for the production of savory biscuits, glossy mass for the production of brioche, etc.
  • the flowable medium can also, e.g. Trennol, Olive oil, egg white, honey, sugar solution or another solution, but also oxygen or cooking gases with which the dough properties are to be influenced, further substances (in particular oils) to improve the taste, but also moisturizers, in particular water, as preparation for subsequent sprinkling or Dusting, for example with poppy seeds, sesame, etc., or sodium hydroxide solution for the production of savory biscuits, glossy mass for the production of brioche, etc.
  • rollers designed in accordance with the invention offer the advantage of a more uniform application of the medium to the dough and better meterability of the applied th amount of medium per unit of dough surface Furthermore, the advantage is achieved that - compared to spraying or dropping - far less medium misses further. Furthermore, a roller designed according to the invention is more flexible with regard to different media to be applied, so that from applying one medium to the application is no problem one of these very different media can be transferred without having to rebuild the machine. Exact local application of the medium is possible without any problems if the dough piece to be treated is arranged in a suitable relative manner. Furthermore, there is the advantage that rollers designed in accordance with the invention are easy to clean. it is sufficient for this to be pumped through a cleaning solution.
  • Sintered bodies made of food-safe, dough-repellent material are also generally physiologically harmless, in particular if, according to a further development of the invention, the sintered body made of polyamide
  • the average molecular weight is suitable for this purpose, for example 800 to 1200, in particular about 1000.
  • Such plastic sintered bodies withstand the medium pressure to be applied without problems, so that it is also possible to work with higher medium pressures.
  • the sintering volume is approximately 60 to 90%. , ie that the sintered body contains 40 to 10% voids. This void volume is usually sufficient for the sintered body to be sufficiently permeable to the medium to be applied to the dough
  • the sintered body consists of sintered plastic grains with an average grain size of 0.1 to 1.0 mm.
  • sintered bodies made of ceramic material may also be used
  • the channel is formed by an axial hollow shaft, in particular made of steel, with several, in particular radial, openings leading from the channel to the sintered body.
  • This hollow shaft therefore also forms the feed line for the medium to be applied to the dough and the component with which the roller in the
  • Machine frame can be rotatably supported If necessary, the roller can also be driven to rotate about its longitudinal axis via this hollow shaft
  • Cavities of the hollow shaft to the sintered body openings ensure a uniform distribution of the substance to be supplied over the axial length of the roller, in particular if, according to a development of the invention, on the inside of the roller
  • Sintered body formed an axial distribution space surrounding the shaft for the
  • the arrangement is expediently such that the channel running in the axis of the roller is closed at one end of the roller, but at the other end of the roller it can be connected to a supply line for the medium via a coupling that is sealed for the medium can be designed without any problems in a manner known per se so that the roller can be driven in rotation about its axis.
  • the term "the medium" was used above, it should also include
  • Mixtures of two or more media are understood, for example solutions of sugar and a flavor or color or the like
  • FIG. 1 shows a first exemplary embodiment in side view.
  • FIG. 2 is a section along the line II-II of FIG. 1 on a larger scale.
  • FIG. 3 shows a second exemplary embodiment in plan view and
  • FIG. 4 is a section along the line IV - IV of Fig. 3rd
  • a funnel-shaped receptacle 1 for the dough is provided.
  • the receptacle 1 has an opening 2 in its bottom through which the dough 3 flows out in the form of a strand 4.
  • a roller set is used to form the strand 4 5, which has three rollers 6 arranged one above the other on each side of the dough strand 4.
  • Each of these rollers 6 is rotatably mounted in a frame 7 (FIG. 2) by means of roller bearings 8 and can be driven to rotate about its longitudinal axis 9.
  • the roller 6 has a central hollow shaft 10 , which protrudes at both ends from the jacket 11 of the roller 6 and is supported with the stubs thus formed in the roller bearings 8.
  • the hollow shaft 10 With its central bore, the hollow shaft 10 forms a channel 12 which is used to supply at least one flowable medium, for example Backol, serves for dough 3
  • the channel 12 is connected at one end of the hollow shaft 10 to a feed line 13 for this medium by means of a coupling 14 ssen, which is tight for this medium and allows the rotation of the roller 6 about its longitudinal axis 9.
  • the medium flows in the direction of arrow 15, flows in the longitudinal direction of the channel 12 into the roller 6 and passes through the wall of the Hollow shaft 10 penetrating, in particular radially extending, openings 16 into an axial distribution space 17 formed on the inside of the jacket 11 of the roller 6, which surrounds the hollow shaft 10 over a large part of its length.
  • the jacket 11 of the roller 6 consists of a sintered body made of sintered plastic grains are formed, the average grain size of which is approximately 0.1 to 1.0 mm, for example 0.2 to 0.35 mm.
  • the sintered volume of this sintered body is approximately 60 to 90%, for example 70 to 80%, of the void fraction in the sintered body is therefore about 40 to 10%, for example 30 to 20%.
  • Food-grade, dough-repellent plastic is expediently used for the production of the sintered body
  • Line polyamide with an average molecular weight of about 1000 such that
  • Sintered body is permeable to the flowable medium introduced via the feed line 13, so that this medium leaves the distributor space 17 in the direction of the arrows 20 (FIG
  • the channel 12 formed by the central bore of the hollow shaft 10 does not extend to the right end of the hollow shaft 10, so that this end is closed.
  • the arrangement can also be such that the channel 12 runs over the entire axial length of the hollow shaft 10, with the supply of the medium to be applied to the dough from both ends of the hollow shaft 10
  • the hollow shaft 10 is expediently made of steel
  • annular shaft 10 surrounding annular grooves 26 which counteract an inflow of the medium into the roller bearings 8
  • the feed lines 13 for the individual rollers 6 are connected to a common supply line 21, which is supplied with the medium to be supplied by a pump (not shown).
  • a pump not shown
  • the arrangement can also be such that individual rollers 6 are connected to different supply lines 21 are connected so that the rollers are supplied with different media to be applied to the dough, possibly in different doses
  • the coupling 14 enables the roller 6 to rotate about its longitudinal axis 9. This rotation can be free or can be carried out by a drive (not shown) in the latter In this case, it is expedient to drive the rollers 6 of the two roller sets each in the direction of flow of the dough (arrows 22).
  • Dough 3 transported on a conveyor belt 23 in the direction of arrow 24.
  • the conveyor belt 23 runs over rollers 25, at least some of which are driven to rotate by a drive, not shown. At least one roller is above the flat dough sheet 3
  • roller 6 arranged, which, like the rollers 25, is rotatably mounted in the frame 7 by means of roller bearings 8.
  • the roller 6 can be designed in a similar manner to that described with reference to FIGS. 1 and 2, and can also be supplied in a similar manner with the medium to be applied to the dough 3.
  • Preferred areas of application for rollers according to the invention are machines for forming dough bands, devices for applying baking oil, separating oil and other liquids to improve the taste or appearance of the baked goods, furthermore moistening devices for preparing a subsequent dusting of the dough or the baked product, e.g. with poppy seeds, further glossy streak for the production of brioche goods or application devices for sodium hydroxide solution for the production of savory biscuits.

Abstract

A roller for applying at least one flowable substance on dough (3). When the dough is brought into contact with the outer covering (11) of the roller (6), it passes in front of said roller. The roller (6) has at least one channel (12) for the supply of the medium. The channel (12) passes through at least a major part of the axial length of the roller (6). The outer covering of the roller (6) encasing said channel (12) is made of a sintered body which consists of food-compatible, dough-repellent substance especially polyamide. This makes it possible to apply the medium on the dough in a homogeneous and orderly manner.

Description

Walze für die Aufbringung zumindest eines stromungsfahigen Mediums auf Teig Roller for applying at least one flowable medium to dough
Die Erfindung bezieht sich auf eine Walze für die Aufbringung zumindest eines stromungsfahigen Mediums auf Teig, der unter Berührung des Mantels der Walze an dieser vorbeigefuhrt wirdThe invention relates to a roller for applying at least one flowable medium to dough, which is guided past the roller while touching the shell of the roller
Bekanntlich ist es häufig gewünscht, eine stromungsfahige Substanz auf oder in Teig einzubringen Zumeist ist diese Substanz Backol, aber auch Eiklar oder andere die Teigqualitat oder das Aussehen des Backproduktes beeinflussende Substanzen finden Verwendung, z B Honig, Zuckerlosungen usw Bei der Aufbringung dieser Substanzen auf Teig wird zumeist so vorgegangen, dass der Teig von außen mit der aufzubringenden Substanz betropft oder besprüht wird Es ist jedoch auch bekannt, für die Aufbringung eine Walze zu verwenden, auf welche die auf den Teig aufzubringende Substanz aufgesprüht oder aufgetropft wird und die diese Substanz dann von ihrem Mantel an den Teig abgibt Nachteilig hieran ist, dass eine gleichmäßige Aufbringung des Mediums auf den Teig und eine genaue Dosierung schwer zu erreichen sind und dass die Aufspruhung oder Auftropfung bewirkt, dass häufig ein beträchtlicher Anteil des auf den Teig aufzubringenden Mediums den Teig nicht erreicht, sondern auf Maschinenteile gelangt, die zwar den Teig fuhren, wo aber die stromungsfahige Substanz nicht erwünscht istAs is well known, it is often desirable to add a flowable substance to or in dough. This substance is mostly Backol, but egg white or other substances that influence the dough quality or the appearance of the baked product are also used, e.g. honey, sugar solutions, etc. When applying these substances to dough is usually done in such a way that the dough is dripped or sprayed with the substance to be applied from the outside.However, it is also known to use a roller for the application, onto which the substance to be applied onto the dough is sprayed or dripped, and which this substance is then sprayed on The disadvantage of this is that uniform application of the medium to the dough and precise dosing are difficult to achieve and that the spraying on or dripping on means that often a considerable proportion of the medium to be applied to the dough does not reach the dough , but on machine parts g reached, which run the dough, but where the flowable substance is not desired
Die Erfindung setzt sich zur Aufgabe, eine Walze der eingangs geschilderten Art so zu verbessern, dass die Aufbringung des Mediums gleichmäßiger und genauer dosierbar erfolgt und außerdem die Gefahr einer Verunreinigung von den Teig fuhrenden Maschinenteilen geringer ist Die Erfindung lost diese Aufgabe dadurch, dass in der Walze zumindest ein Kanal für die Zuleitung des Mediums vorhanden ist, der zumindest über einen Großteil der axialen Lange der Walze verlauft, und dass der diesen Kanal umgebende Mantel der Walze als für dieses Medium durchlassiger Sinterkorper aus lebensmittelechtem, teigabstoßendem Werkstoff ausgebildet ist Zum Unterschied von den bekannten Walzen erfolgt somit die Zufuhr des auf den Teig aufzubringenden Mediums zum Umfang der Walze nicht von außen auf den Walzenmantel, sondern von innen her über den im Inneren der Walze angeordneten Kanal bzw mehrere solche Kanäle Das in diesen Kanal bzw diese Kanäle eingeleitete Medium steht zweckmäßig unter Druck und gelangt daher aus diesem Kanal bzw. den Kanälen durch den Mantel hindurch zum Außenumfang der Walze Die Durchlässigkeit des diesen Walzenmantel bildenden Matenales ermöglicht dies, wobei sich Sinterkorper als besonders geeignet erwiesen haben Solche Sinterkorper können problemlos mit der notigen Festigkeit ausgeführt werden, welche erforderlich ist, um den Mediumdruck auszuhalten und es lasst sich die für die gewünschte Durchlässigkeit erforderliche Porosität bei der Herstellung verläßlich erhalten Das durch den Walzenmantel hindurch diffundierende Medium baut an der Oberflache der Walze einen Film aus dem stromungsfahigen Medium auf, welcher durch Kontakt mit dem zu behandelnden Teig auf diesen übertragen wird Im Falle von Backol als stromungsfahiges Medium verbessert der aufgebrachte Ölfilm das Fließverhalten des Teiges durch den Teig fuhrende bzw formende Maschinenteile, z B Walzensatze, und zugleich wird die Oberflache der hergestellten Backprodukte verbessert Wie bereits erwähnt, bildet Backol jedoch nicht die einzige Anwendungsart, denn das stromungsfahige Medium kann auch, z B Trennol, Olivenöl, Eiklar, Honig, Zuckerlosung oder eine andere Losung sein, aber auch Sauerstoff oder Gargase, mit welchen die Teigeigenschaften beeinflußt werden sollen, weiters Substanzen (insbesondere Öle) zur Geschmacksverbesserung, aber auch Befeuchtungsmittel, insbesondere Wasser, als Vorbereitung für eine nachfolgende Bestreuung oder Bestaubung, z B mit Mohn, Sesam etc , oder Natronlauge für die Herstellung von Salzgebäck, Glanzmasse für die Herstellung von Brioche usw In allen Fallen bieten in erfindungsgemaßer Weise ausgebildete Walzen den Vorteil einer gleichmäßigeren Aufbringung des Mediums auf den Teig und einer besseren Dosierbarkeit der aufgebrachten Mediummenge pro Einheit der Teigoberflache Weiters wird der Vorteil erzielt, dass - im Vergleich zu Bespruhung oder Betropfung - weit weniger Medium danebengeht Weiters ist eine erfindungsgemaß ausgebildete Walze flexibler im Hinblick auf unterschiedliche aufzubringende Medien, sodass ohne Problem von der Aufbringung eines Mediums auf die Aufbringung eines davon stark unterschiedlichen Mediums übergegangen werden kann, ohne die Maschine umbauen zu müssen Eine genaue örtliche Aufbringung des Mediums ist bei entsprechender Relativanordnung des zu behandelnden Teigstuckes zur Walze problemlos möglich Weiters ergibt sich der Vorteil, dass in erfindungsgemaßer Weise ausgebildete Walzen leicht zu reinigen sind, es genügt hiezu das Durchpumpen einer Reinigungslosung Sinterkorper aus lebensmittelechtem, teigabstoßendem Werkstoff sind darüber hinaus in der Regel physiologisch unbedenklich, insbesondere, wenn gemäß einer Weiterbildung der Erfindung der Sinterkorper aus Polyamid besteht Das durchschnittliche Molekulargewicht ist hiefur geeignet zu wählen, z B 800 bis 1200, insbesondere etwa 1000 Solche Kunststoffsinterkorper halten den aufzubringen Mediumdruck problemlos aus, sodass gegebenenfalls auch mit höheren Mediumdrucken gearbeitet werden kann Zweckmäßig besteht im Rahmen der Erfindung das Sintervolumen etwa 60 bis 90 %, d h , dass der Sinterkorper 40 bis 10 % Hohlräume enthalt Dieses Hohlraumvolumen genügt in der Regel für eine ausreichende Durchlässigkeit des Sinterkorpers für das auf den Teig aufzubringende MediumThe invention has for its object to improve a roller of the type described in such a way that the application of the medium takes place more uniformly and more precisely and also the risk of contamination of the machine parts carrying the dough is lower. The invention achieves this object in that There is at least one channel for the supply of the medium to the roller, which runs at least over a large part of the axial length of the roller, and that the roller jacket surrounding this channel is designed as a sintered body made of food-safe, dough-repellent material which is permeable to this medium In known rollers, the medium to be applied to the dough is therefore not supplied to the circumference of the roller from the outside onto the roller shell, but from the inside via the channel or several such channels arranged inside the roller. The medium introduced into this channel or these channels is expedient vacuum and therefore passes from this channel or channels through the jacket to the outer circumference of the roller. The permeability of the material forming this roller jacket makes this possible, whereby sintered bodies have proven to be particularly suitable. Such sintered bodies can be designed with the necessary strength without any problems in order to withstand the medium pressure and the porosity required for the desired permeability can be reliably obtained during production. The medium diffusing through the roll shell builds a film on the surface of the roll from the flowable medium, which through contact with the dough to be treated is transferred to this In the case of Backol as a flowable medium, the applied oil film the flow behavior of the dough through the dough leading or shaping machine parts, e.g. roller sets, and at the same time the surface of the baked products is improved As already mentioned, Backol is not the only type of application, because the flowable medium can also, e.g. Trennol, Olive oil, egg white, honey, sugar solution or another solution, but also oxygen or cooking gases with which the dough properties are to be influenced, further substances (in particular oils) to improve the taste, but also moisturizers, in particular water, as preparation for subsequent sprinkling or Dusting, for example with poppy seeds, sesame, etc., or sodium hydroxide solution for the production of savory biscuits, glossy mass for the production of brioche, etc. In all cases, rollers designed in accordance with the invention offer the advantage of a more uniform application of the medium to the dough and better meterability of the applied th amount of medium per unit of dough surface Furthermore, the advantage is achieved that - compared to spraying or dropping - far less medium misses further. Furthermore, a roller designed according to the invention is more flexible with regard to different media to be applied, so that from applying one medium to the application is no problem one of these very different media can be transferred without having to rebuild the machine. Exact local application of the medium is possible without any problems if the dough piece to be treated is arranged in a suitable relative manner. Furthermore, there is the advantage that rollers designed in accordance with the invention are easy to clean. it is sufficient for this to be pumped through a cleaning solution. Sintered bodies made of food-safe, dough-repellent material are also generally physiologically harmless, in particular if, according to a further development of the invention, the sintered body made of polyamide The average molecular weight is suitable for this purpose, for example 800 to 1200, in particular about 1000. Such plastic sintered bodies withstand the medium pressure to be applied without problems, so that it is also possible to work with higher medium pressures. Within the scope of the invention, the sintering volume is approximately 60 to 90%. , ie that the sintered body contains 40 to 10% voids. This void volume is usually sufficient for the sintered body to be sufficiently permeable to the medium to be applied to the dough
Versuche haben ergeben, dass besonders gunstige Resultate erzielt werden, wenn erfindungsgemaß der Sinterkorper aus gesinterten Kunststoffkornchen mit einer durchschnittlichen Korngroße von 0,1 bis 1 ,0 mm besteht Außer Kunststoffsmterkorpern können gegebenenfalls auch Sinterkorper aus keramischem Material Verwendung findenExperiments have shown that particularly favorable results are achieved if, according to the invention, the sintered body consists of sintered plastic grains with an average grain size of 0.1 to 1.0 mm. In addition to plastic sintered bodies, sintered bodies made of ceramic material may also be used
Im Rahmen der Erfindung ist der Kanal von einer axialen Hohlwelle, insbesondere aus Stahl, gebildet, wobei vom Kanal mehrere, insbesondere radial verlaufende, Öffnungen zum Sinterkorper fuhren Diese Hohlwelle bildet daher zugleich die Zufuhrungsleitung für das auf den Teig aufzubringende Medium und den Bauteil, mit welchem die Walze imIn the context of the invention, the channel is formed by an axial hollow shaft, in particular made of steel, with several, in particular radial, openings leading from the channel to the sintered body. This hollow shaft therefore also forms the feed line for the medium to be applied to the dough and the component with which the roller in the
Maschinengestell drehbar gelagert werden kann Gegebenenfalls kann über diese Hohlwelle auch ein Antrieb der Walze zur Rotation um ihre Langsachse erfolgen Die von demMachine frame can be rotatably supported If necessary, the roller can also be driven to rotate about its longitudinal axis via this hollow shaft
Hohlraum der Hohlwelle zum Sinterkorper verlaufenden Offnungen gewährleisten eine gleichmaßige Verteilung der zuzuführenden Substanz über die axiale Lange der Walze, insbesondere, wenn gemäß einer Weiterbildung der Erfindung an der Innenseite des vomCavities of the hollow shaft to the sintered body openings ensure a uniform distribution of the substance to be supplied over the axial length of the roller, in particular if, according to a development of the invention, on the inside of the
Sinterkorper gebildeten Mantels ein axialer, die Welle umgebender Verteilerraum für dasSintered body formed an axial distribution space surrounding the shaft for the
Medium vorhanden ist, in den die Offnungen mundenThere is medium in which the openings open
Zweckmäßig ist im Rahmen der Erfindung die Anordnung so getroffen, dass der in der Achse der Walze verlaufende Kanal am einen Stirnende der Walze verschlossen, am anderen Stirnende der Walze jedoch über eine für das Medium dichte Kupplung an eine Zuleitung für das Medium anschließbar ist Diese Kupplung kann problemlos in an sich bekannter Weise so ausgebildet sein, dass ein Drehantrieb der Walze um ihre Achse möglich ist Wenn vorstehend von "dem Medium" die Rede war, so sollen darunter auchIn the context of the invention, the arrangement is expediently such that the channel running in the axis of the roller is closed at one end of the roller, but at the other end of the roller it can be connected to a supply line for the medium via a coupling that is sealed for the medium can be designed without any problems in a manner known per se so that the roller can be driven in rotation about its axis. If the term "the medium" was used above, it should also include
Mischungen zweier oder mehrerer Medien verstanden werden, z B Losungen von Zucker und einem Geschmacks- oder Farbstoff od dglMixtures of two or more media are understood, for example solutions of sugar and a flavor or color or the like
In der Zeichnung ist der Erfindungsgegenstand anhand von Ausfuhrungsbeispielen schematisch dargestellt Fig 1 zeigt ein erstes Ausfuhrungsbeispiel in Seitenansicht Fig 2 ist ein Schnitt nach der Linie II - II der Fig 1 in größerem Maßstab Fig 3 zeigt eine zweite Ausfuhrungsform in Draufsicht und Fig 4 ist ein Schnitt nach der Linie IV - IV der Fig 3In the drawing, the subject of the invention is shown schematically using exemplary embodiments. FIG. 1 shows a first exemplary embodiment in side view. FIG. 2 is a section along the line II-II of FIG. 1 on a larger scale. FIG. 3 shows a second exemplary embodiment in plan view and FIG. 4 is a section along the line IV - IV of Fig. 3rd
Bei der Ausfuhrungsform nach den Fig 1 und 2 ist ein trichterförmiger Aufnahmebehälter 1 für den Teig vorgesehen Der Aufnahmebehälter 1 hat in seinem Boden eine Öffnung 2, durch welche der Teig 3 in Form eines Stranges 4 nach unten ausfließt Zur Formung des Stranges 4 dient ein Walzensatz 5, der beiderseits des Teigstranges 4 je drei übereinander angeordnete Walzen 6 aufweist Jede dieser Walzen 6 ist in einem Gestell 7 (Fig 2) mittels Walzlagern 8 drehbar gelagert und kann zum Umlauf um ihre Langsachse 9 angetrieben sein Die Walze 6 hat eine zentrale Hohlwelle 10, die an ihren beiden Enden aus dem Mantel 11 der Walze 6 herausragt und mit den so gebildeten Stummeln in den Walzlagern 8 gelagert ist Die Hohlwelle 10 bildet mit ihrer mittigen Bohrung einen Kanal 12, der zur Zufuhr zumindest eines stromungsfahigen Mediums, z B Backol, zum Teig 3 dient Hiezu ist der Kanal 12 am einen Stirnende der Hohlwelle 10 an eine Zuleitung 13 für dieses Medium mittels einer Kupplung 14 angeschlossen, die für dieses Medium dicht ist und die Rotation der Walze 6 um ihre Langsachse 9 zulaßt Über die Zuleitung 13 strömt das Medium in Richtung des Pfeiles 15 zu, strömt in Längsrichtung des Kanales 12 in die Walze 6 hinein und tritt durch die Wand der Hohlwelle 10 durchsetzende, insbesondere radial verlaufende, Offnungen 16 in einen an der Innenseite des Mantels 11 der Walze 6 ausgebildeten axialen Verteilerraum 17 ein, der die Hohlwelle 10 über einen Großteil ihrer Lange umgibt Der Mantel 11 der Walze 6 besteht aus einem Sinterkorper, der aus miteinander versinterten Kunststoffkornchen gebildet ist, deren durchschnittliche Korngroße etwa 0,1 bis 1 ,0 mm betragt, z B 0,2 bis 0,35 mm Das Sintervolumen dieses Sinterkorpers betragt etwa 60 bis 90%, z B 70 bis 80 %, der Hohlraumanteil im Sinterkorper betragt daher etwa 40 bis 10%, z B 30 bis 20 % Verwendet für die Herstellung des Sinterkorpers wird zweckmäßig lebensmittelechter, teigabstoßender Kunststoff Hiefur eignet sich in erster1 and 2, a funnel-shaped receptacle 1 for the dough is provided. The receptacle 1 has an opening 2 in its bottom through which the dough 3 flows out in the form of a strand 4. A roller set is used to form the strand 4 5, which has three rollers 6 arranged one above the other on each side of the dough strand 4. Each of these rollers 6 is rotatably mounted in a frame 7 (FIG. 2) by means of roller bearings 8 and can be driven to rotate about its longitudinal axis 9. The roller 6 has a central hollow shaft 10 , which protrudes at both ends from the jacket 11 of the roller 6 and is supported with the stubs thus formed in the roller bearings 8. With its central bore, the hollow shaft 10 forms a channel 12 which is used to supply at least one flowable medium, for example Backol, serves for dough 3 For this purpose, the channel 12 is connected at one end of the hollow shaft 10 to a feed line 13 for this medium by means of a coupling 14 ssen, which is tight for this medium and allows the rotation of the roller 6 about its longitudinal axis 9. Via the feed line 13, the medium flows in the direction of arrow 15, flows in the longitudinal direction of the channel 12 into the roller 6 and passes through the wall of the Hollow shaft 10 penetrating, in particular radially extending, openings 16 into an axial distribution space 17 formed on the inside of the jacket 11 of the roller 6, which surrounds the hollow shaft 10 over a large part of its length. The jacket 11 of the roller 6 consists of a sintered body made of sintered plastic grains are formed, the average grain size of which is approximately 0.1 to 1.0 mm, for example 0.2 to 0.35 mm. The sintered volume of this sintered body is approximately 60 to 90%, for example 70 to 80%, of the void fraction in the sintered body is therefore about 40 to 10%, for example 30 to 20%. Food-grade, dough-repellent plastic is expediently used for the production of the sintered body
Linie Polyamid mit einem durchschnittlichen Molekulargewicht von etwa 1000 Ein solcherLine polyamide with an average molecular weight of about 1000 such
Sinterkorper ist für das über die Zuleitung 13 eingebrachte stromungsfahige Medium durchlassig, sodass dieses Medium aus dem Verteilerraum 17 in Richtung der Pfeile 20 (FigSintered body is permeable to the flowable medium introduced via the feed line 13, so that this medium leaves the distributor space 17 in the direction of the arrows 20 (FIG
2) durch den Mantel 1 1 zum Umfang 18 der Walze 6 strömt Dort bildet dieses Medium einen dünnen Film, der an den Beruhrungsstellen 19 zwischen den Walzen 6 und dem Teig 3 auf diesen übertragen wird Durch die große axiale Lange des Verteilerraumes 17 ergibt sich eine gleichmaßige Verteilung des zugefuhrten Backols od dgl über den Umfang 18 der Walze 6 Daher erfolgt auch eine gleichmäßige Übertragung des Backols auf die Oberflache des Teigstranges 3 Durch geeignete Wahl der über die Zuleitung 13 zugeleiteten Mediummenge bzw durch den Zufuhrungsdruck laßt sich in einfacher Weise eine Dosierung der auf den Teig 3 aufzubringenden Mediummenge erzielen Die Verluste an Medium sind äußerst gering, da die gesamte über die Zuleitung 13 zugefuhrte Mediummenge zum Umfang 18 der Walze 6 gelangt und praktisch der Gesamtanteil davon durch Berührung auf den Teig 3 übertragen wird Verunreinigungen der benachbarten Maschinenteile werden daher vermieden2) flows through the jacket 11 to the circumference 18 of the roller 6, where this medium forms a thin film which is transferred to the contact points 19 between the rollers 6 and the dough 3 by the large axial length of the distribution space 17 Uniform distribution of the supplied backol or the like over the circumference 18 of the roller 6. Therefore, there is also a uniform transfer of the backol to the surface of the dough strand 3. By suitable choice of the amount of medium supplied via the feed line 13 or by means of the feed pressure, it is easy to dose the Achieve the amount of medium to be applied to the dough 3 The losses of medium are extremely low, since the entire amount of medium supplied via the feed line 13 reaches the circumference 18 of the roller 6 and practically the entire proportion thereof is transferred to the dough 3 by contact. Contamination of the neighboring machine parts therefore becomes avoided
Bei der in den Fig 1 und 2 dargestellten Ausfuhrungsform reicht der von der zentralen Bohrung der Hohlwelle 10 gebildete Kanal 12 nicht zum rechten Stirnende der Hohlwelle 10, sodass dieses Stirnende verschlossen ist Es kann aber natürlich die Anordnung auch so getroffen sein, dass der Kanal 12 über die gesamte axiale Lange der Hohlwelle 10 durchlauft, wobei die Zuleitung des auf den Teig aufzubringenden Mediums von beiden Stirnenden der Hohlwelle 10 her erfolgtIn the embodiment shown in FIGS. 1 and 2, the channel 12 formed by the central bore of the hollow shaft 10 does not extend to the right end of the hollow shaft 10, so that this end is closed. Of course, the arrangement can also be such that the channel 12 runs over the entire axial length of the hollow shaft 10, with the supply of the medium to be applied to the dough from both ends of the hollow shaft 10
Um eine gute Stabilität gegen die auftretenden Drucke zu erzielen, besteht die Hohlwelle 10 zweckmäßig aus StahlIn order to achieve good stability against the pressures that occur, the hollow shaft 10 is expediently made of steel
An den beiden Stirnenden des Mantels 11 befinden sich die Hohlwelle 10 umgebende Ringnuten 26, die einem Zuströmen des Medium in die Walzlager 8 entgegenwirkenAt the two ends of the casing 11 there are the annular shaft 10 surrounding annular grooves 26 which counteract an inflow of the medium into the roller bearings 8
Wie Fig 1 zeigt, sind die Zuleitungen 13 für die einzelnen Walzen 6 an eine gemeinsame Versorgungsleitung 21 angeschlossen, die von einer nicht dargestellten Pumpe mit dem zuzuführenden Medium versorgt wird Es kann jedoch auch die Anordnung so getroffen sein, dass einzelne Walzen 6 an unterschiedliche Versorgungsleitungen 21 angeschlossen sind, sodass die Walzen mit unterschiedlichen, auf den Teig aufzubringenden Medien versorgt werden, gegebenenfalls in unterschiedlicher DosierungAs shown in FIG. 1, the feed lines 13 for the individual rollers 6 are connected to a common supply line 21, which is supplied with the medium to be supplied by a pump (not shown). However, the arrangement can also be such that individual rollers 6 are connected to different supply lines 21 are connected so that the rollers are supplied with different media to be applied to the dough, possibly in different doses
Die Kupplung 14 ermöglicht eine Drehung der Walze 6 um ihre Langsachse 9 Diese Drehung kann frei sein oder durch einen nicht dargestellten Antrieb erfolgen Im letzteren Fall ist es zweckmäßig, die Walzen 6 der beiden Walzensätze jeweils in Durchlaufrichtung des Teiges anzutreiben (Pfeile 22).The coupling 14 enables the roller 6 to rotate about its longitudinal axis 9. This rotation can be free or can be carried out by a drive (not shown) in the latter In this case, it is expedient to drive the rollers 6 of the two roller sets each in the direction of flow of the dough (arrows 22).
Bei der Ausführungsform nach den Figuren 1 und 2 läuft der Teig, auf welchen dasIn the embodiment according to Figures 1 and 2, the dough runs on which the
Medium aufgebracht werden soll, von oben nach unten. Bei der Ausführungsform nach den Fig. 3 und 4 ist hingegen die Bewegungsrichtung des Teiges 3 horizontal, u.zw. wird derMedium should be applied from top to bottom. In the embodiment according to FIGS. 3 and 4, however, the direction of movement of the dough 3 is horizontal, etc. will the
Teig 3 auf einem Förderband 23 in Richtung des Pfeiles 24 transportiert. Das Förderband 23 läuft über Rollen 25, von denen zumindest einige durch einen nicht dargestellten Antrieb zum Umlauf angetrieben sind. Oberhalb des flachen Teigbandes 3 ist zumindest eine WalzeDough 3 transported on a conveyor belt 23 in the direction of arrow 24. The conveyor belt 23 runs over rollers 25, at least some of which are driven to rotate by a drive, not shown. At least one roller is above the flat dough sheet 3
6 angeordnet, die ebenso wie die Rollen 25 im Gestell 7 mittels Wälzlagern 8 drehbar gelagert ist. Die Walze 6 kann in ähnlicher Weise ausgebildet sein, wie dies anhand der Fig. 1 und 2 beschrieben wurde, und kann auch in ähnlicher Weise mit dem auf den Teig 3 aufzubringenden Medium versorgt werden.6 arranged, which, like the rollers 25, is rotatably mounted in the frame 7 by means of roller bearings 8. The roller 6 can be designed in a similar manner to that described with reference to FIGS. 1 and 2, and can also be supplied in a similar manner with the medium to be applied to the dough 3.
Bevorzugte Anwendungsgebiete erfindungsgemäßer Walzen sind Maschinen zur Formung von Teigbändern, Einrichtungen zur Aufbringung von Backol, Trennöl und anderen Flüssigkeiten zur Verbesserung des Geschmacks bzw. des Aussehens des Backwerkes, weiters Befeuchtungsvorrichtungen für die Vorbereitung einer nachfolgenden Bestäubung des Teiges bzw. des Backproduktes, z.B. mit Mohn, weiters Glanzstreicher für die Herstellung von Briochewaren oder Aufbringungsvorrichtungen für Natronlauge für die Herstellung von Salzgebäck. Preferred areas of application for rollers according to the invention are machines for forming dough bands, devices for applying baking oil, separating oil and other liquids to improve the taste or appearance of the baked goods, furthermore moistening devices for preparing a subsequent dusting of the dough or the baked product, e.g. with poppy seeds, further glossy streak for the production of brioche goods or application devices for sodium hydroxide solution for the production of savory biscuits.

Claims

P a t e n t a n s p r ü c h eP a t e n t a n s r u c h e
Walze für die Aufbringung zumindest eines stromungsfahigen Mediums auf Teig, der unter Berührung des Mantels der Walze an dieser vorbeigefuhrt wird, dadurch gekennzeichnet, daß in der Walze (6) zumindest ein Kanal (12) für die Zuleitung des Mediums vorhanden ist, der zumindest über einen Großteil der axialen Lange der Walze (6) verlauft und daß der diesen Kanal (12) umgebende Mantel (1 1 ) der Walze (6) als für dieses Medium durchlassiger Sinterkorper aus lebensmittelechtem, teigabstoßendem Werkstoff ausgebildet istRoller for applying at least one flowable medium to dough, which is guided past the roller while touching the jacket of the roller, characterized in that in the roller (6) there is at least one channel (12) for the supply of the medium, which is at least via a large part of the axial length of the roller (6) extends and that the jacket (12) surrounding this channel (12) of the roller (6) is designed as a sintered body made of food-safe, dough-repellent material which is permeable to this medium
Walze nach Anspruch 1 , dadurch gekennzeichnet, daß der Sinterkorper aus Polyamid, bestehtRoller according to claim 1, characterized in that the sintered body consists of polyamide
Walze nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Sintervolumen 60 bis 90 % betragtRoll according to claim 1 or 2, characterized in that the sintering volume is 60 to 90%
Walze nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Sinterkorper aus gesinterten Kunststoffkornchen mit einer durchschnittlichen Korngroße von 0,1 bis 1 ,0 mm bestehtRoller according to claim 2 or 3, characterized in that the sintered body consists of sintered plastic granules with an average grain size of 0.1 to 1.0 mm
Walze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Kanal (12) von einer axialen Hohlwelle (10), insbesondere aus Stahl, gebildet ist, wobei vom Kanal (12) mehrere, insbesondere radial verlaufende, Offnungen (16) zum Sinterkorper fuhrenRoll according to one of claims 1 to 4, characterized in that the channel (12) is formed by an axial hollow shaft (10), in particular made of steel, with several, in particular radially extending, openings (16) from the channel (12) for Sintered bodies drove
Walze nach Anspruch 5, dadurch gekennzeichnet, daß an der Innenseite des vom Sinterkorper gebildeten Mantels (11 ) ein axialer, die Hohlwelle (10) umgebender Verteilerraum (17) für das Medium vorhanden ist, in den die Öffnungen (16) mundenRoller according to claim 5, characterized in that on the inside of the jacket (11) formed by the sintered body there is an axial distributor space (17) for the medium surrounding the hollow shaft (10) into which the openings (16) open
Walze nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der in der Achse (9) der Walze (6) verlaufende Kanal am einen Stirnende der Walze (6) verschlossen, am anderen Stirnende der Walze (6) jedoch über eine für das Medium dichte Kupplung (14) an eine Zuleitung (13) für das Medium anschließbar ist Roller according to one of claims 1 to 6, characterized in that the channel running in the axis (9) of the roller (6) is closed at one end of the roller (6), but at the other end of the roller (6) via one for the Medium-tight coupling (14) can be connected to a feed line (13) for the medium
PCT/AT2000/000205 1999-08-03 2000-07-25 Roller for applying at least one flowable substance on dough WO2001008498A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU64143/00A AU6414300A (en) 1999-08-03 2000-07-25 Roller for applying at least one flowable substance on dough
EP00951085A EP1233675A1 (en) 1999-08-03 2000-07-25 Roller for applying at least one flowable substance on dough

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT133599A AT409704B (en) 1999-08-03 1999-08-03 ROLLER FOR APPLYING AT LEAST ONE FLOWABLE MEDIUM ON DOUGH
AT1335/99 1999-08-03

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AT (1) AT409704B (en)
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CN103503936A (en) * 2013-10-09 2014-01-15 安徽顶能食品有限公司 Biscuit flower drawing machine

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US4397628A (en) * 1982-02-01 1983-08-09 Nabisco Brands, Inc. Extrusion cylinder assembly
US5820906A (en) * 1995-05-09 1998-10-13 Nestec S.A. Method for dosing a pattern of food material
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US3500766A (en) * 1968-04-26 1970-03-17 Lyons & Co Ltd J Machine for applying dough lids to food-filled containers
US3712264A (en) * 1970-09-16 1973-01-23 Lehara W Inc Rotating paste depositer
DE2504578A1 (en) * 1974-02-06 1975-08-14 Fmc Corp DEVICE FOR FILLING PIZZAS
US4212609A (en) * 1978-05-17 1980-07-15 Fay Rudolph J Method and apparatus for producing shaped and sized food articles
EP0082085A1 (en) * 1981-12-16 1983-06-22 Biscuiterie Nantaise - Bn Device for the production of coated products such as biscuits and the like
US4397628A (en) * 1982-02-01 1983-08-09 Nabisco Brands, Inc. Extrusion cylinder assembly
US5820906A (en) * 1995-05-09 1998-10-13 Nestec S.A. Method for dosing a pattern of food material
WO2000000034A1 (en) * 1998-06-29 2000-01-06 Billcrest Products Limited Process and apparatus for depositing and spreading pizza sauce onto a pizza base

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CN103503936A (en) * 2013-10-09 2014-01-15 安徽顶能食品有限公司 Biscuit flower drawing machine

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ATA133599A (en) 2002-03-15
AU6414300A (en) 2001-02-19
AT409704B (en) 2002-10-25
EP1233675A1 (en) 2002-08-28

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