EP0100064A1 - Device for the sound-tight locking of a machine housing's opening - Google Patents

Device for the sound-tight locking of a machine housing's opening Download PDF

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Publication number
EP0100064A1
EP0100064A1 EP83107124A EP83107124A EP0100064A1 EP 0100064 A1 EP0100064 A1 EP 0100064A1 EP 83107124 A EP83107124 A EP 83107124A EP 83107124 A EP83107124 A EP 83107124A EP 0100064 A1 EP0100064 A1 EP 0100064A1
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EP
European Patent Office
Prior art keywords
mat
housing wall
opening
opposite
polarization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83107124A
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German (de)
French (fr)
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EP0100064B1 (en
Inventor
Ernst Moeckl
Günther Kleffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf International GmbH
Nixdorf Computer AG
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Application filed by Wincor Nixdorf International GmbH, Nixdorf Computer AG filed Critical Wincor Nixdorf International GmbH
Publication of EP0100064A1 publication Critical patent/EP0100064A1/en
Application granted granted Critical
Publication of EP0100064B1 publication Critical patent/EP0100064B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/08—Sound-deadening, or shock-absorbing stands, supports, cases or pads separate from machines

Definitions

  • the invention relates to a device for sound-sealing closure of a machine housing opening, which is used to feed or discharge material to be processed in the machine.
  • Printers for data processing systems are a typical example of such machines. Such printers work at very high working speeds, the mechanical components of this printer developing strong working noises, which emerge predominantly through the openings in the printer housing, which are used to feed or discharge the material to be printed, for example receipts, passbooks, printing paper or the like. This effect is reinforced by the fact that the paper protruding from the openings itself acts as a sound-emitting membrane.
  • a flexible mat or the like covering this and having an edge area on the opening wall is arranged in the opening, in that at least the edge area lying on it can be magnetically polarized, and in that the housing wall assigned to the overlying edge area contains means which can choose to polarize the mat in the same direction or neutral or opposite.
  • the mat is so flexible that it can easily adapt to the contours of the materials in question, for example open passbooks, journals or the like.
  • the magnetic polarization of the edge area lying on the material to be printed gives the possibility of passing it through magnetic forces from this material. or pull against this material. This is done by means arranged in the housing wall opposite this edge area, which can be selectively and controlled magnetically polarized so that they exert a repulsive or an attractive effect on the overlying edge area of the mat. In this way, the mat can be placed firmly on the material to be printed during the printing phase, so that extensive sound insulation is achieved, but can be lifted off the material to be printed during transport or during insertion.
  • the mat consists of any sound-absorbing material in which magnetizable materials are embedded at least in the overlying edge area.
  • the magnetically polarizable means arranged in the housing wall each comprise permanent magnets surrounded by electrical coils with a polarization which is in the same direction as the polarization of the mat, the coils being used to generate a field of the same size as the permanent magnets however opposite magnetic field can be connected to a direct current source.
  • Each permanent magnet is surrounded by a magnetic field. This is directed so that it has a repulsive effect on the edge region of the mat assigned to it.
  • the repellent effect ' is canceled and the mat against the material to be printed or the housing wall.
  • the coil in such a way that a field opposite the field of the permanent magnet is created, so that the mat is drawn against the housing wall or the material to be printed by magnetic attraction forces.
  • the permanent magnets are designed as horseshoe magnets with their poles facing the edge of the mat, the edge of the mat in each case having poles of the horseshoe magnets opposite the poles of the same name.
  • the soundproofing mat can be covered with repellent or attractive points almost as tightly as desired, so that even with strongly structured forms of the material to be printed a perfect, gap-free seal is possible.
  • the mat is pressed onto the housing wall by its own weight or by its own mechanical tension during the printing process and is lifted by simple electromagnets which are polarized in the same direction as the polarization of the mat by energization.
  • the mat is lifted from the housing wall by mechanical spring means and magnetically pulled to the housing wall during the printing process, in that electromagnets are polarized in opposite directions to the polarization of the mat by energization.
  • the printer 2 shown in FIG. 1 essentially consists of a printing unit 6 placed on a printing table 4. At the top of the printing unit 6 there is an opening 8 for feeding the material 10, for example paper, to be printed which is arranged behind the printer 2 . This paper is guided around a deflection roller 12 past a print head 14. Then it comes out again through an opening 16.
  • the opening 16 is designed in a known manner as a narrow slot, which allows the passage of single or multi-layer paper.
  • a mat 18 is fastened which extends over the entire slot width and, in its natural position, its edge region 20 is intended to bear against the housing wall 22 opposite it.
  • This housing wall 22 encloses a chamber 24 in which means 26 are arranged, by means of which the mat 18 can be lifted off the housing wall 22, as will be described in more detail below.
  • a slot 28 is formed between the printing table 4 and the housing of the printing unit 6, in which, for example, a passbook 30 can be inserted, which is to be printed by the printing head 32.
  • the opening 34 of the slot 28 can be closed by a flexible mat 36 which is fastened to the housing of the printing unit 6 and with its lower edge region 38 lies loosely on the housing wall 40 opposite it, which forms the printing table 4.
  • means 42 are arranged in the printing table, which allow the mat 36 to be lifted off the housing wall 40 via magnetic forces.
  • the mat 36 has alternating magnetic north and south poles on its lower edge area 38.
  • the assignment of the peripheral area 38 with north or south poles can be chosen to be more or less dense, depending on the requirements.
  • the means 42 consist of several horseshoe magnets 44, the north and south poles of these horseshoe magnets 44 each lying opposite the north and south poles of the mat 36. Instead of the horseshoe magnets, these equivalent pot magnets, magnets in the form of a lying E or the like can also be used.
  • the repulsive forces acting on the edge area 38 from the horseshoe magnets 44 are sufficient to lift it away from the housing wall 40 to such an extent that the passbook 30 can be inserted.
  • the coils 46 are connected to a direct current Source 48 connected, the current direction is selected so that there is an opposite magnetic field of the same size as the magnetic field of the horseshoe magnets. This removes the magnetic effect of the horseshoe magnets, so that the edge area 38 of the mat 36 rests against the passbook 30 in the manner shown in a sound-proof manner.
  • the magnetic field of the coils 46 can also be chosen so strong that the resulting magnetic flux is opposite to that of the horseshoe magnet, so that the north and south poles of the edge area 38 are opposite poles of the same name. In this way, the contact of the mat 36 against the housing wall or the savings book 30 can still be improved.
  • FIG. 3 again shows the upper region of the printing unit 6 in an enlarged representation.
  • the paper 10 introduced through the opening 8 leaves the printing unit again via the opening 16.
  • the mat 18 lies in its natural magnetically unaffected position against the housing wall 22.
  • the edge region 20 is polarized such that, for example, there is a magnetic north pole near the edge and a magnetic south pole further away from the edge.
  • the means 26 in turn consist of a series of horseshoe magnets 50, the north or south poles of which lie opposite the corresponding poles of the mat 18 and thus cause the latter to be lifted off the housing wall 22. In this way, transport of the paper 10 is not hindered.
  • the coils 52 are energized in the manner already described, so that the repulsive force is canceled or even converted into an attractive force. In this way it is ensured that the strong pressure noises cannot penetrate through the opening 16 to the outside.
  • Fig. 4 shows an embodiment approximately according to Fig. 2; the same parts are provided with the same reference numerals.
  • the mat 136 rests with its edge area 138 on the housing wall 140 due to its own weight.
  • the magnetically polarizable means 142 which are formed, for example, as electromagnets 146 by an iron core with a coil surrounding them, are polarized in the same direction as the polarization of the mat 136 by connection to the direct current source 148, so that a repulsive effect is produced. 4 shows the moment when the electromagnets 146 are not energized, so that the mat rests on the lower edge of the housing opening due to its own weight.
  • 5 shows another exemplary embodiment, in which, in a modification of the above-described examples, the mat 236 resting with its edge region 238 is lifted mechanically by spring means 250.
  • the magnetically polarizable means 242 designed as electromagnets 246 are polarized in opposite directions to the polarization of the mat 236 by connection to the direct current source 248, so that an attractive effect is produced.
  • 5 shows the state in which the electromagnets are energized.
  • the electromagnets 146 to 246 are supplied with current, for example, via a switch arranged in the connecting lines thereof, which switch is switched simultaneously with the printing unit in such a way that the paper feed opening is closed when the printing unit is running (FIGS. 4 and 5).

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  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

1. An apparatus for the sound insulating closure of the opening of a machine housing, said opening being provided for the delivery and removal of material being processed in said machine, characterized in - that a flexible mat (18, 36, 136, 236) or the like is disposed within said opening (16, 34), said mat overlapping said opening and resting with a rim portion (20, 38, 138, 238) against the housing wall (22, 40, 140, 240) defining said opening ; - that at least said rim portion (20, 38, 138, 238) is magnetically polarized ; and - that said housing wall (22, 40, 140, 240) associated with said rim portion (20, 38, 138, 238) includes means (26, 42) which are able to take selectively a polarization which is equal with or neutral, or opposite, respectively, to the polarization of said mat (18, 36, 136, 236).

Description

Die Erfindung betrifft eine Einrichtung zur schallabdichtenden Verschließung einer Maschinengehäuse-öffnung, welche zur Zuführung oder Abführung von in der Maschine zu bearbeitendem Material dient. Ein typisches Beispiel für derartige Maschinen sind Drucker für Datenverarbeitungsanlagen. Derartige Drucker arbeiten mit sehr hohen Arbeitsgeschwindigkeiten, wobei die mechanischen Komponenten dieses Druckers starke Arbeitsgeräusche entwickeln, die vorwiegend durch die öffnungen des Druckergehäuses austreten, welche zur Zuführung oder Abführung des zu bedruckenden Materials, beispielsweise Belege, Sparbücher, Druckpapier oder dergleichen, dienen. Dieser Effekt wird noch dadurch verstärkt, daß das aus den öffnungen herausragende Papier selbst als schallabstrahlende Membran wirkt.,The invention relates to a device for sound-sealing closure of a machine housing opening, which is used to feed or discharge material to be processed in the machine. Printers for data processing systems are a typical example of such machines. Such printers work at very high working speeds, the mechanical components of this printer developing strong working noises, which emerge predominantly through the openings in the printer housing, which are used to feed or discharge the material to be printed, for example receipts, passbooks, printing paper or the like. This effect is reinforced by the fact that the paper protruding from the openings itself acts as a sound-emitting membrane.

Es ist bereits bekannt, derartige öffnungen durch mehr oder weniger eng an dem zu bedruckenden Material anliegende Klappen weitgehend zu verschließen. Wenn diese . Klappen nicht eng genug an diesem Material anliegen, ist ihre schallisolierende Wirkung im allgemeinen nur sehr gering. Wenn sie jedoch zu eng an dem zu bedruckenden Material anliegen, besteht die Gefahr, daß sie den Transport dieses Materials, in der Regel dünnes Papier, behindern, so daß es entweder zu einem Zeilenschlupf kommt oder das Papier im Gerät zusammengeknautscht wird.It is already known to largely close such openings by flaps lying more or less closely against the material to be printed. If those . Flaps do not fit tight enough on this material, their sound-insulating effect is generally very low. However, if they are too tight against the material to be printed, there is a risk that they will transport this material, usually thin paper, hinder, so that there is either a line slip or the paper is crumpled in the device.

Insbesondere bei Druckgeräten zum Bedrucken von Sparbüchern oder ähnlichen unebenen Materialien haben sich die bekannten Abdeckklappen als völlig unzureichend erwiesen, da sie sich nicht an deren Kontur anlegen. Deshalb bleiben zwischen den Abdeckklappen und den zu bedruckenden Sparbüchern erhebliche Spalte, aus denen der Schall nach wie vor massiv austritt.In particular in the case of printing devices for printing passbooks or similar uneven materials, the known cover flaps have proven to be completely inadequate since they do not conform to their contours. That is why there are considerable gaps between the cover flaps and the passbooks to be printed, from which the sound continues to emerge.

Es ist die Aufgabe der vorliegenden Erfindung, eine Einrichtung der im Oberbegriff des Anspruchs 1 genannten Art zu schaffen, welche auch bei unregelmäßig geformtem zu bedruckenden Material eine weitgehend spaltfreie Abdichtung der Maschinengehäuseöffnung gewährleistet, ohne daß der Materialtransport behindert wird.It is the object of the present invention to provide a device of the type mentioned in the preamble of claim 1, which ensures largely gap-free sealing of the machine housing opening even with irregularly shaped material to be printed, without the material transport being impeded.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß in der Öffnung eine diese überdeckende, mit einem Randbereich auf der öffnungswand aufliegende flexible Matte oder dergleichen angeordnet ist, daß zumindest der aufliegende Randbereich magnetisch polarisierbar ist, und daß die dem aufliegenden Randbereich zugeordnete Gehäusewand Mittel enthält, welche wahlweise eine zur Polarisierung der Matte gleichsinnige oder eine neutrale bzw. gegensinnige Polarisierung annehmen können.This object is achieved according to the invention in that a flexible mat or the like covering this and having an edge area on the opening wall is arranged in the opening, in that at least the edge area lying on it can be magnetically polarized, and in that the housing wall assigned to the overlying edge area contains means which can choose to polarize the mat in the same direction or neutral or opposite.

Die Matte ist so flexibel, daß sie sich den Konturen der in Frage kommenden Materialien, beispielsweise aufgeschlagene Sparbücher, Journale oder dergleichen, ohne weiteres anpassen kann. Durch die magnetische Polarisierung des auf dem zu bedruckenden Material aufliegenden Randbereiches ergibt sich die Möglichkeit, diesen durch magnetische Kräfte von diesem Material.abzuheben oder gegen dieses Material zu ziehen. Dazu dienen die in der Gehäusewand gegenüber diesem Randbereich angeordneten Mittel, die wahlweise und gesteuert so magnetisch polarisiert werden können, daß sie auf den aufliegenden Randbereich der Matte eine abstoßende oder eine anziehende Wirkung ausüben. Auf diese Weise kann die Matte jeweils während der Druckphase fest auf das zu bedruckende Material aufgelegt werden, so daß eine weitgehende Schallisolierung erreicht wird, während des Transportes bzw. während des Einlegens des zu bedruckenden Materials jedoch von diesem abgehoben werden.The mat is so flexible that it can easily adapt to the contours of the materials in question, for example open passbooks, journals or the like. The magnetic polarization of the edge area lying on the material to be printed gives the possibility of passing it through magnetic forces from this material. or pull against this material. This is done by means arranged in the housing wall opposite this edge area, which can be selectively and controlled magnetically polarized so that they exert a repulsive or an attractive effect on the overlying edge area of the mat. In this way, the mat can be placed firmly on the material to be printed during the printing phase, so that extensive sound insulation is achieved, but can be lifted off the material to be printed during transport or during insertion.

Nach einem Merkmal der Erfindung besteht die Matte aus einem beliebigen, schallschluckenden Material, in welchem zumindest in dem aufliegenden Randbereich magnetisierbare Materialien eingelagert sind.According to one feature of the invention, the mat consists of any sound-absorbing material in which magnetizable materials are embedded at least in the overlying edge area.

Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß die in der Gehäusewand-angeordneten, magnetisch polarisierbaren Mittel jeweils von elektrischen Spulen umgebene Permanentmagnete mit einer der Polarisierung der Matte gleichsinnigen Polarisierung umfassen, wobei die Spulen zur Erzeugung eines dem Feld der Permanentmagneten gleich großen, diesem jedoch entgegengesetzten magnetischen Feldes an eine Gleichstromquelle anschließbar sind. Jeder Permanentmagnet ist von einem magnetischen Feld umgeben. Dieses ist so gerichtet, daß es auf den ihm zugeordneten Randbereich der Matte abstoßend wirkt. Bei Bestromung der den Permanentmagneten umgebenden Spule wird in dieser ein magnetisches Feld erzeugt, welches das Feld des Permanentmagneten aufhebt, so daß die abstoßende Wirkung' aufgehoben wird und die Matte sich gegen das zu bedruckende Material bzw. die Gehäusewand anlegt. Dabei besteht grundsätzlich auch die Möglichkeit, die Spule so auszulegen, daß ein dem Feld des Permanentmagneten entgegengesetztes Feld entsteht, so daß die Matte durch magnetische Anziehungskräfte gegen die Gehäusewand bzw.-das zu bedruckende Material gezogen wird.According to a further feature of the invention it is provided that the magnetically polarizable means arranged in the housing wall each comprise permanent magnets surrounded by electrical coils with a polarization which is in the same direction as the polarization of the mat, the coils being used to generate a field of the same size as the permanent magnets however opposite magnetic field can be connected to a direct current source. Each permanent magnet is surrounded by a magnetic field. This is directed so that it has a repulsive effect on the edge region of the mat assigned to it. When energization of the permanent magnet surrounding the coil in a magnetic field that is generated that cancels the field of the permanent magnet, so that the repellent effect 'is canceled and the mat against the material to be printed or the housing wall. In principle, there is also the possibility of designing the coil in such a way that a field opposite the field of the permanent magnet is created, so that the mat is drawn against the housing wall or the material to be printed by magnetic attraction forces.

In einer bevorzugten Ausgestaltung der Erfindung sind die Permanentmagnete als mit ihren Polen dem Rand der Matte zugewandte Hufeisenmagnete ausgebildet, wobei der Rand der Matte jeweils den Polen der Hufeisenmagnete gegenüberliegende, mit diesen gleichnamige Pole aufweist. Auf diese Weise kann die schallabdichtende Matte fast beliebig dicht mit abstoßenden bzw. anziehenden Punkten belegt werden, so daß auch bei stark gegliederten Formen des zu bedruckenden Materials eine einwandfreie, spaltfreie Abdichtung möglich ist.In a preferred embodiment of the invention, the permanent magnets are designed as horseshoe magnets with their poles facing the edge of the mat, the edge of the mat in each case having poles of the horseshoe magnets opposite the poles of the same name. In this way, the soundproofing mat can be covered with repellent or attractive points almost as tightly as desired, so that even with strongly structured forms of the material to be printed a perfect, gap-free seal is possible.

In einem anderen Ausführungsbeispiel wird die Matte während des Druckvorgangs durch Eigengewicht bzw. durch - ihre eigene mechanische Spannung auf die Gehäusewand gedrückt unddirch einfache Elektromagnete abgehoben, die durch Bestromung gleichsinnig zur Polarisierung der Matte polarisiert werden.In another exemplary embodiment, the mat is pressed onto the housing wall by its own weight or by its own mechanical tension during the printing process and is lifted by simple electromagnets which are polarized in the same direction as the polarization of the mat by energization.

In einem anderen Ausführungsbeispiel wird die Matte durch mechanische Federmittel von der Gehäusewand abgehoben und während des Druckvorgangs magnetisch an die Gehäusewand gezogen, indem Elektromagnete durch Bestromung gegensinnig zur Polarisierung der Matte polarisiert werden.In another exemplary embodiment, the mat is lifted from the housing wall by mechanical spring means and magnetically pulled to the housing wall during the printing process, in that electromagnets are polarized in opposite directions to the polarization of the mat by energization.

Ein Ausführungsbeispiel der Efindung ist in der Zeichnung dargestellt und im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 eine schematische, seitliche Schnittdarstellung eines Nadeldruckers,
  • Fig. 2 in vergrößerter Darstellung eine teilweise Ansicht in Richtung des Pfeiles II in Fig. 1,
  • Fig. 3 in vergrößerter Darstellung eine Einzelheit aus Fig. 1,
  • Fig. 4 eine andere Ausführung einer Einrichtung gemäß Fig. 2,
  • Fig. 5 eine weitere Ausführung einer Einrichtung gemäß Fig. 2.
An embodiment of the invention is shown in the drawing and described in more detail below. Show it:
  • 1 is a schematic, side sectional view of a dot matrix printer,
  • 2 is an enlarged view of a partial view in the direction of arrow II in Fig. 1,
  • 3 shows an enlarged view of a detail from FIG. 1,
  • 4 shows another embodiment of a device according to FIG. 2,
  • 5 shows a further embodiment of a device according to FIG. 2.

Der in Fig.. 1 dargestellte Drucker 2 besteht im wesentlichen aus einem auf einem Drucktisch 4 aufgesetzten Druckwerk 6. An der Oberseite des Druckwerkes 6 ist eine öffnung 8 für die Zuführung des hinter dem Drucker 2 angeordneten zu bedruckenden Materials 10, beispielsweise Papier, vorgesehen. Dieses Papier wird um eine Umlenkrolle 12 herum an einem Druckkopf 14 vorbeigeführt. Dann tritt-es durch eine Öffnung 16 wieder nach außen. Die Öffnung 16 ist in bekannter Weise als schmaler Schlitz ausgebildet, welcher den Durchtritt von ein- oder mehrlagigem Papier erlaubt. Auf einem Rand des Schlitzes ist eine über die gesamte Schlitzbreite reichende Matte 18 befestigt, welche sich in ihrer natürlichen Lage mit ihrem Randbereich 20 gegen die diesem gegenüberliegende Gehäusewand 22 anzulegen bestrebt ist. Diese Gehäusewand 22 umschließt eine Kammer 24, in der Mittel 26 angeordnet sind, mit deren Hilfe die Matte 18 von der Gehäusewand 22 abgehoben werden kann, wie weiter unten näher beschrieben wird.The printer 2 shown in FIG. 1 essentially consists of a printing unit 6 placed on a printing table 4. At the top of the printing unit 6 there is an opening 8 for feeding the material 10, for example paper, to be printed which is arranged behind the printer 2 . This paper is guided around a deflection roller 12 past a print head 14. Then it comes out again through an opening 16. The opening 16 is designed in a known manner as a narrow slot, which allows the passage of single or multi-layer paper. On one edge of the slot, a mat 18 is fastened which extends over the entire slot width and, in its natural position, its edge region 20 is intended to bear against the housing wall 22 opposite it. This housing wall 22 encloses a chamber 24 in which means 26 are arranged, by means of which the mat 18 can be lifted off the housing wall 22, as will be described in more detail below.

Zwischen dem Drucktisch 4 und dem Gehäuse des Druckwerkes 6 ist ein Schlitz 28 ausgebildet, in welchen beispielsweise ein Sparbuch 30 eingelegt werden kann, welches durch den Druckkopf 32 bedruckt werden soll. Die öffnung 34 des Schlitzes 28 ist durch eine flexible Matte 36 verschließbar, die am Gehäuse des Druckwerkes 6 befestigt ist und mit ihrem unteren Randbereich 38 lose auf der diesem gegenüberliegenden,den Drucktisch 4 bildenden Gehäusewand 40 aufliegt. Im Drucktisch sind wiederum Mittel 42 angeordnet, welche ein Abheben der Matte 36 von der Gehäusewand 40 über magnetische Kräfte erlauben.A slot 28 is formed between the printing table 4 and the housing of the printing unit 6, in which, for example, a passbook 30 can be inserted, which is to be printed by the printing head 32. The opening 34 of the slot 28 can be closed by a flexible mat 36 which is fastened to the housing of the printing unit 6 and with its lower edge region 38 lies loosely on the housing wall 40 opposite it, which forms the printing table 4. In turn, means 42 are arranged in the printing table, which allow the mat 36 to be lifted off the housing wall 40 via magnetic forces.

Fig. 2 zeigt eine teilweise Darstellung des Druckers 2 in Richtung des Pfeiles II. Die Matte 36 weist an ihrem unteren Randbereich 38 jeweils abwechselnd magnetische Nord- bzw. Südpole auf. Die Belegung des Randbereiches 38 mit Nord- bzw. Südpolen kann je nach Erfordernis mehr oder weniger dicht gewählt werden. Die Mittel 42 bestehen aus mehreren Hufeisenmagneten 44, wobei die Nord- bzw. Südpole dieser Hufeisenmagnete 44 jeweils den Nord- bzw. Südpolen der Matte 36 gegenüberliegen. Anstelle der Hufeisenmagnete können auch diesen gleichwertige Topfmagnete, Magnete in Form eines liegenden E o. dgl. verwendet werden. Die von den Hufeisenmagneten 44 auf den Randbereich 38 wirkenden abstoßenden Kräfte reichen aus, um diesen soweit von der Gehäusewand 40 abzuheben, daß das Sparbuch 30 eingelegt werden kann. Gleichzeitig mit der Aktivierung des Druckkopfes 32 werden die Spulen 46 an eine Gleichstromquelle 48 angeschlossen, wobei die Stromrichtung so gewählt ist, daß sich ein dem magnetischen Feld der Hufeisenmagneten entgegengesetztes, gleich großes magnetisches Feld ergibt. Dadurch wird die magnetische Wirkung der Hufeisenmagneten aufgehoben, so daß sich der Randbereich 38 der Matte 36 in der dargestellten Weise schallabdichtend gegen das Sparbuch 30 anlegt. Das Magnetfeld der Spulen 46 kann auch so stark gewählt werden, daß der resultierende Magnetfluß entgegengesetzt zu dem der Hufeisenmagneten gerichtet ist, so daß den Nord- bzw. Südpolen des Randbereiches 38 jeweils ungleichnamige Pole gegenüberliegen. Auf diese Weise kann die Anlage der Matte 36 gegen die Gehäusewand bzw. das Sparbuch 30 noch verbessert werden.2 shows a partial illustration of the printer 2 in the direction of the arrow II. The mat 36 has alternating magnetic north and south poles on its lower edge area 38. The assignment of the peripheral area 38 with north or south poles can be chosen to be more or less dense, depending on the requirements. The means 42 consist of several horseshoe magnets 44, the north and south poles of these horseshoe magnets 44 each lying opposite the north and south poles of the mat 36. Instead of the horseshoe magnets, these equivalent pot magnets, magnets in the form of a lying E or the like can also be used. The repulsive forces acting on the edge area 38 from the horseshoe magnets 44 are sufficient to lift it away from the housing wall 40 to such an extent that the passbook 30 can be inserted. Simultaneously with the activation of the print head 32, the coils 46 are connected to a direct current Source 48 connected, the current direction is selected so that there is an opposite magnetic field of the same size as the magnetic field of the horseshoe magnets. This removes the magnetic effect of the horseshoe magnets, so that the edge area 38 of the mat 36 rests against the passbook 30 in the manner shown in a sound-proof manner. The magnetic field of the coils 46 can also be chosen so strong that the resulting magnetic flux is opposite to that of the horseshoe magnet, so that the north and south poles of the edge area 38 are opposite poles of the same name. In this way, the contact of the mat 36 against the housing wall or the savings book 30 can still be improved.

Fig. 3 zeigt in vergrößerter Darstellung nochmals den oberen Bereich des Druckwerkes 6. Das durch die öffnung 8 eingeführte Papier 10 verläßt das Druckwerk wieder über die Öffnung 16. Die Matte 18 liegt in ihrer natürlichen magnetisch unbeeinflußten Lage gegen die Gehäusewand 22 an. Der Randbereich 20 ist so polarisiert, daß sich beispielsweise randnah ein magnetischer Nordpol, weiter vom Rand entfernt ein magnetischer Südpol ergibt. Die Mittel 26 bestehen wiederum aus einer Reihe von Hufeisenmagneten 50, deren Nord- bzw. Südpole den entsprechenden Polen der Matte 18 gegenüberliegen und so ein Abheben derselben von der Gehäusewand 22 bewirken. Auf diese Weise wird ein Transport des Papiers 10 nicht behindert. Während der lärmintensiven Druckphase werden . die Spulen 52 in der schon beschriebenen Weise bestromt, so daß die abstoßende Kraft aufgehoben oder sogar in eine anziehende Kraft verwandelt wird. Auf diese Weise ist gewährleistet, daß die starken Druckgeräusche nicht durch die Öffnung 16 nach außen dringen können.3 again shows the upper region of the printing unit 6 in an enlarged representation. The paper 10 introduced through the opening 8 leaves the printing unit again via the opening 16. The mat 18 lies in its natural magnetically unaffected position against the housing wall 22. The edge region 20 is polarized such that, for example, there is a magnetic north pole near the edge and a magnetic south pole further away from the edge. The means 26 in turn consist of a series of horseshoe magnets 50, the north or south poles of which lie opposite the corresponding poles of the mat 18 and thus cause the latter to be lifted off the housing wall 22. In this way, transport of the paper 10 is not hindered. During the noisy printing phase. the coils 52 are energized in the manner already described, so that the repulsive force is canceled or even converted into an attractive force. In this way it is ensured that the strong pressure noises cannot penetrate through the opening 16 to the outside.

Fig. 4 zeigt ein Ausführungsbeispiel etwa gemäß Fig. 2; gleiche Teile sind mit gleichen Bezugszeichen versehen. Die Matte 136 liegt mit ihrem Randbereich 138 durch ihr Eigengewicht auf der Gehäusewand 140 auf. Zum Abheben werden die magnetisch polarisierbaren Mittel 142, die beispielsweise als Elektromagnete 146 durch einen Eisenkern mit diesen umgebender Spule gebildet sind, durch Anschließen an die Gleichstromquelle 148, gleichsinnig zur Polarisierung der Matte 136 polarisiert, so daß eine abstoßende Wirkung entsteht. Die Fig. 4 zeigt den Augenblick, in dem die Elektromagnete 146 nicht bestromt sind, so daß die Matte durch ihr Eigengewicht auf dem unteren Rand der Gehäuseöffnung aufliegt.Fig. 4 shows an embodiment approximately according to Fig. 2; the same parts are provided with the same reference numerals. The mat 136 rests with its edge area 138 on the housing wall 140 due to its own weight. For lifting, the magnetically polarizable means 142, which are formed, for example, as electromagnets 146 by an iron core with a coil surrounding them, are polarized in the same direction as the polarization of the mat 136 by connection to the direct current source 148, so that a repulsive effect is produced. 4 shows the moment when the electromagnets 146 are not energized, so that the mat rests on the lower edge of the housing opening due to its own weight.

Fig. 5 zeigt ein anderes Ausführungsbeispiel, bei welchem in Abwandlung zu den vorbeschriebenen Beispielen die mit ihrem Randbereich 238 aufliegende Matte 236 mechanisch dur,ch Federmittel 250 abgehoben wird. Während des Druckvorganges werden die als Elektromagnete 246 ausgebildeten magnetisch polarisierbaren Mittel 242 durch Anschluß an die Gleichstromquelle 248 gegensinnig zur Polarisierung der Matte 236 polarisiert, so daß eine anziehende Wirkung entsteht. Die Fig. 5 zeigt den Zustand, in dem die Elektromagnete bestromt sind.5 shows another exemplary embodiment, in which, in a modification of the above-described examples, the mat 236 resting with its edge region 238 is lifted mechanically by spring means 250. During the printing process, the magnetically polarizable means 242 designed as electromagnets 246 are polarized in opposite directions to the polarization of the mat 236 by connection to the direct current source 248, so that an attractive effect is produced. 5 shows the state in which the electromagnets are energized.

Die Bestromung der Elektromagnete 146 bis 246 erfolgt beispielsweise über einen in den Anschlußleitungen derselben angeordneten Schalter, welcher gleichzeitig mit dem Druckwerk jeweils so geschaltet wird, daß bei laufendem Druckwerk die Papierzuführungsöffnung verschlosssen ist (Fig. 4 und 5).The electromagnets 146 to 246 are supplied with current, for example, via a switch arranged in the connecting lines thereof, which switch is switched simultaneously with the printing unit in such a way that the paper feed opening is closed when the printing unit is running (FIGS. 4 and 5).

Claims (7)

1. Einrichtung zur schallabdichtenden Verschließung einer Maschinengehäuse-öffnung, welche zur Zuführung oder Abführung von in der Maschine zu bearbeitendem Material dient,
dadurch gekennzeichnet, - daß in der öffnung (16, 34) eine diese überdeckende, mit einem Randbereich (20, 38, 138, 238) auf der die öffnung bildenden Gehäusewand (22, 40, 140, 240) aufliegende flexible Matte (18, 36, 136, 236) o. dergleichen angeordnet ist, - daß zumindest der aufliegende Randbereich (20, 38, 138, 238) magnetisch polarisiert ist - und daß die dem aufliegenden Randbereich (20, 38, 138, 238) zugeordnete Gehäusewand (22, 40, 140, 240) Mittel (26, 42) enthält, welche wahlweise eine zur Polarisierung der Matte (18, 36, 136, 236) gleichsinnige oder eine neutrale bzw. gegensinnige Polarisierung annehmen können. 1. device for sound-sealing closure of a machine housing opening, which is used to feed or discharge material to be processed in the machine,
characterized, - That in the opening (16, 34) a covering this, with an edge area (20, 38, 138, 238) on the housing wall forming the opening (22, 40, 140, 240) resting flexible mat (18, 36, 136 , 236) or the like is arranged, - That at least the overlying edge area (20, 38, 138, 238) is magnetically polarized - And that the overlying edge area (20, 38, 138, 238) associated housing wall (22, 40, 140, 240) contains means (26, 42) which optionally one for polarizing the mat (18, 36, 136, 236th ) can adopt the same or a neutral or opposite polarization. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet , daß die Matte (18, 36, 136, 236) aus einem schallschluckenden Material besteht, in welchem zumindest in dem aufliegenden Randbereich (20, 38, 138, 238) magnetisierbare Materialien eingelagert sind.2. Device according to claim 1, characterized in that the mat (18, 36, 136, 236) consists of a sound-absorbing material, in which at least in the overlying edge region (20, 38, 138, 238) magnetizable materials are embedded. 3. Einrichtung nach einem derAnsprüche 1 oder 2, d a - durch gekennzeichnet, daß die in der Gehäusewand (22, 40) angeordneten, magnetisch polarisierbaren Mittel (26, 42) jeweils von elektrischen Spulen (46, 52) umgebene Permanentmagnete (44, 50) umfassen, wobei die Spulen (46, 52) zur Erzeugung eines dem Feld der Permanentmagnete (44, 50) gleichgroßen, entgegengesetzten magnetischen Feldes an eine Gleichstromquelle (48) anschließbar sind.3. Device according to one of claims 1 or 2, since characterized in that the magnetically polarizable means (26, 42) arranged in the housing wall (22, 40) each comprise permanent magnets (44, 50) surrounded by electrical coils (46, 52), the coils (46, 52) for Generation of an opposite magnetic field of the same size as the field of permanent magnets (44, 50) can be connected to a direct current source (48). 4. Einrichtung nach Anspruch 3, dadurch gekennzeichnet , daß die Permanentmagnete (44, 50) als mit ihren Polen dem Rand der Matte (18, 36) zugewandte Hufeisenmagnete o. dgl. ausgebildet sind, und daß der Rand der Matte (18, 36) jeweils den Polen der Hufeisenmagnete gegenüberliegende, mit diesen gleichnamige Pole aufweist.4. Device according to claim 3, characterized in that the permanent magnets (44, 50) with their poles to the edge of the mat (18, 36) facing horseshoe magnets or the like are formed, and that the edge of the mat (18, 36 ) each has the poles of the horseshoe magnets opposite, with the poles of the same name. 5. Einrichtung nach einem der Ansprüche 1 bis 4, d a - durch gekennzeichnet, daß eine neutrale bzw. gegensinnige Polarisierung der in der Gehäusewand (22, 40) angeordneten Mittel (26, 42) jeweils gleichzeitig mit der Aktivierung der lärmerzeugenden Maschine erfolgt.5. Device according to one of claims 1 to 4, d a - characterized in that a neutral or opposite polarization of the arranged in the housing wall (22, 40) means (26, 42) takes place simultaneously with the activation of the noise-generating machine. 6. Einrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die in der Gehäusewand (140) angeordneten, magnetisch polarisierbaren Mittel (142) jeweils durch Elektromagnete (146) gebildet sind, welche durch Anschluß an eine Gleichstromquelle (148) gleichsinnig zu der Polarisierung der Matte (136) polarisierbar sind.6. Device according to one of claims 1 or 2, characterized in that the in the housing wall (140) arranged, magnetically polarizable means (142) are each formed by electromagnets (146) which in the same direction by connection to a direct current source (148) the polarization of the mat (136) can be polarized. 7. Einrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet , daß die in der Gehäusewand (240) angeordneten, magnetisch polarisierbaren Mittel (242) jeweils durch Elektromagnete (246) gebildet sind, welche durch Anschluß an eine Gleichstromquelle (248) gegensinnig zu der Polarisierung der Matte polarisierbar sind, und daß an der Matte (236) angreifende, in einer diese von der Gehäusewand abhebenden Richtung wirkende Federmittel (250) o. dgl. vorgesehen sind.7. Device according to one of claims 1 or 2, characterized in that the in the housing wall (240), magnetically polarizable means (242) are each formed by electromagnets (246), which can be polarized in the opposite direction to the polarization of the mat by connection to a direct current source (248), and which act on the mat (236), spring means (250) or the like acting in a direction lifting this off the housing wall are provided.
EP83107124A 1982-07-26 1983-07-20 Device for the sound-tight locking of a machine housing's opening Expired EP0100064B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3227833 1982-07-26
DE3227833A DE3227833C2 (en) 1982-07-26 1982-07-26 Device for soundproofing a machine housing opening

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EP0100064A1 true EP0100064A1 (en) 1984-02-08
EP0100064B1 EP0100064B1 (en) 1985-05-29

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EP83107124A Expired EP0100064B1 (en) 1982-07-26 1983-07-20 Device for the sound-tight locking of a machine housing's opening

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DE (2) DE3227833C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137562A (en) * 1983-02-10 1984-10-10 Seikosha Kk Printer housing
FR2617766A1 (en) * 1987-07-06 1989-01-13 Sagem PRINTER MACHINE ARRANGED FOR REDUCTION OF ITS SOUND OPERATING LEVEL

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29509665U1 (en) * 1995-06-21 1996-11-21 Werner, Wilfried, 34289 Zierenberg Needle embossing device
CN100343072C (en) 2002-09-11 2007-10-17 西门子公司 Printer
DE10305634B4 (en) * 2002-09-11 2006-01-12 Siemens Ag printer
DE102004013963B4 (en) 2004-03-19 2006-03-16 Siemens Ag printer

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Publication number Priority date Publication date Assignee Title
AT247382B (en) * 1961-02-16 1966-06-10 Ibm Typewriter or the like
DE2706209A1 (en) * 1977-02-14 1978-08-17 Siemens Ag Typewriter enclosed by noise excluding housing - has flap pressing on paper passing through housing delivery slot
DE2647251B2 (en) * 1976-10-20 1978-11-09 Eisfink Carl Fink Gmbh & Co, 7144 Asperg Soundproofing device for machines for processing workpieces
EP0038065A1 (en) * 1980-04-15 1981-10-21 Siemens Aktiengesellschaft Silencing covering for printing and writing machines

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Publication number Priority date Publication date Assignee Title
DE1268157B (en) * 1961-02-16 1968-05-16 Ibm Device for noise dampening of memory-controlled typewriters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT247382B (en) * 1961-02-16 1966-06-10 Ibm Typewriter or the like
DE2647251B2 (en) * 1976-10-20 1978-11-09 Eisfink Carl Fink Gmbh & Co, 7144 Asperg Soundproofing device for machines for processing workpieces
DE2706209A1 (en) * 1977-02-14 1978-08-17 Siemens Ag Typewriter enclosed by noise excluding housing - has flap pressing on paper passing through housing delivery slot
EP0038065A1 (en) * 1980-04-15 1981-10-21 Siemens Aktiengesellschaft Silencing covering for printing and writing machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137562A (en) * 1983-02-10 1984-10-10 Seikosha Kk Printer housing
FR2617766A1 (en) * 1987-07-06 1989-01-13 Sagem PRINTER MACHINE ARRANGED FOR REDUCTION OF ITS SOUND OPERATING LEVEL
BE1004160A3 (en) * 1987-07-06 1992-10-06 Sagem Printer machine arranged for a reduction of its operating sound level.

Also Published As

Publication number Publication date
EP0100064B1 (en) 1985-05-29
DE3227833A1 (en) 1984-01-26
DE3227833C2 (en) 1984-08-30
DE3360229D1 (en) 1985-07-04

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