EP0106801B2 - Device for feeding an office machine with individual sheets - Google Patents

Device for feeding an office machine with individual sheets Download PDF

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Publication number
EP0106801B2
EP0106801B2 EP83810451A EP83810451A EP0106801B2 EP 0106801 B2 EP0106801 B2 EP 0106801B2 EP 83810451 A EP83810451 A EP 83810451A EP 83810451 A EP83810451 A EP 83810451A EP 0106801 B2 EP0106801 B2 EP 0106801B2
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EP
European Patent Office
Prior art keywords
rocker
stack
plate
rockers
sheets
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP83810451A
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German (de)
French (fr)
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EP0106801A2 (en
EP0106801B1 (en
EP0106801A3 (en
Inventor
Kurt Rünzi
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Individual
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Individual
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Classifications

    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/103—Sheet holders, retainers, movable guides, or stationary guides for the sheet feeding section

Definitions

  • the invention relates to a device for loading an office machine, in particular a typewriter with single sheets, according to the preamble of claim 1.
  • the object of the invention is to further develop such a device in such a way that it can be made more compact, a simpler separation of the sheets and easy adaptation to different machine makes with different paper widths is possible.
  • the device is used to feed single sheets or several sheets combined into a set to an office machine, for example a typewriter or printer, in which machine the sheets are labeled or printed in the usual way.
  • the sheets lie in the form of a supply stack 6 on two rockers 2 arranged in parallel and are fed to a platen roller 3 by two drivable pull-off rollers 15.
  • the labeled sheets then pass between two transport rollers 4, 5 and are finally placed on an inclined stack 7.
  • the two rockers 2 are seated on a rocker shaft 9 which is designed as a square cross section and which is rotatably mounted in the two side walls 8.
  • the rockers 2 can be fixed on the rocker axis 9 by screws 11.
  • the square shape of the rocker axis 9 ensures that both rockers 2 perform a synchronous pivoting movement.
  • Each of the two lateral, vertical boundary walls 12 contains an upwardly opening slot 16, which is penetrated by the drive shaft 14 for the take-off rollers 15. The rockers 2 can thus pivot without this influencing the position of the pull-off rollers 15.
  • Each of the spacer bushes 46 seated on the drive shaft 14 engages with its radial groove 42 with play in the slot 16 and is rotatably connected to the take-off roller. This allows the rocker 2 to be moved along the rocker axis 9 and at the same time the pull-off roller 15 is also displaced.
  • a profile plate 19 is pivotally connected to the rocker 2. This is mounted in a pivot axis 24 in the rear third of the rocker 2 and contains a stop 18 at the front for the supply stack 6, which merges into a guide plate 20 at the top.
  • the guide plate 20 extends approximately parallel to the supply stack 6. The position of the guide plate 20 is chosen relative to the circumference of the draw-off roller 15 such that the top sheet of the supply stack 6 is approximately at the same height as the upper edge of the guide plate 20.
  • the stop 18 and the guide plate 20 together form a right angle.
  • each rocker 2 is provided with a triangular separating corner 28, which projects above the supply stack 6 at opposite corners, as can be seen in particular from FIG. 4.
  • Each separating corner 28 sits on the bent part 44 of a swivel plate 26 and forms a single piece.
  • the pivot plate 26 is pivotally mounted about an axis of rotation 30 parallel to the rocker axis 9.
  • the arrangement of this swivel plate 26 on the two rockers 2 is a mirror image.
  • each rocker is provided with a U-shaped bracket, which is designed to be removable and can also be pushed in parallel to the rocker base 13 when not in use.
  • the take-off rollers 15 are each provided with an overrunning clutch, not shown, so that they can rotate freely on an uppermost sheet pulled off in the direction of arrow C without the drive shaft 14 also rotating.
  • the two side walls 8 of the device are connected to one another by struts 10.
  • the design is preferably such that the movement derived from the platen roller 3 is transmitted to the drive shaft 14 by toothed belts with the interposition of a gear with an interrupted movement.

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Pile Receivers (AREA)
  • Handling Of Cut Paper (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Beschicken einer Büromaschine, insbesondere eines Schreibautomaten mit Einzel-Blättern, nach dem Oberbegriff des Patentanspruches 1.The invention relates to a device for loading an office machine, in particular a typewriter with single sheets, according to the preamble of claim 1.

Aus der CH-PS 611577 ist bereits eine Einrichtung an einer Büromaschine zum selbsttätigen Beschicken derselben mit Einzel-Blättern bekannt. Mit der Erfindung soll die Aufgabe gelöst werden, eine solche Vorrichtung weiterzuentwickeln derart, dass sie kompakter ausgebildet werden kann, eine einfachere Vereinzelung der Blätter und eine leichte Anpassung an unterschiedliche Maschinenfabrikate mit unterschiedlichen Papierbreiten möglich ist.From CH-PS 611577 a device on an office machine for automatically loading the same with single sheets is already known. The object of the invention is to further develop such a device in such a way that it can be made more compact, a simpler separation of the sheets and easy adaptation to different machine makes with different paper widths is possible.

Diese Aufgabe wird durch die im Kennzeichen des Patentanspruches 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in the characterizing part of patent claim 1.

Dadurch ist es möglich, die Vorrichtung zur Verwendung auf unterschiedlichen Maschinen besonders einfach und kostengünstig zu gestalten, da die gleichen Teile verwendbar sind. Ausserdem wird die Anpassung an unterschiedliche Blattformate erleichtert Zudem werden Störungen im Blatt-Transport beim Nachfüllen des Vorratsstapels vermieden. Durch das Werschieben der Wippen wird gleichzeitig auch die Abzugsrolle mitverschoben.This makes it possible to make the device for use on different machines particularly simple and inexpensive, since the same parts can be used. In addition, the adaptation to different sheet formats is facilitated. In addition, disruptions in sheet transport when refilling the supply stack are avoided. By pushing the rockers, the take-off roller is also moved at the same time.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt. Es zeigen:

  • Fig. 1 eine Draufsicht auf die Vorrichtung,
  • Fig. 2 ein Schnitt nach der Linie 11-11 in Fig. 1,
  • Fig. 3 ein Schnitt nach der Linie 111-111 in Fig. 1,
  • Fig. 4 eine Draufsicht auf ein Detail der Wippe,
  • Fig. 5 eine perspektivische Ansicht der auf eine Büromaschine aufgesetzten Vorrichtung.
In the drawing, an embodiment of the subject of the invention is shown. Show it:
  • 1 is a plan view of the device,
  • 2 is a section along the line 11-11 in Fig. 1,
  • 3 shows a section along the line 111-111 in FIG. 1,
  • 4 is a plan view of a detail of the rocker,
  • Fig. 5 is a perspective view of the device placed on an office machine.

Die Vorrichtung dient zum Zuführen von Einzel-Blättern oder mehreren zu einem Satz zusammengefügten Blättern zu einer Büromaschine, beispielsweise einem Schreibautomat oder Drucker, in welcher Maschine die Blätter in üblicher Weise beschriftet oder bedruckt werden. Die Blätter liegen in Form eines Vorratsstapels 6 auf zwei parallel angeordneten Wippen 2 und werden durch zwei antreibbare Abzugsrollen 15 einer Schreibwalze 3 zugeführt. Hernach gelangen die beschrifteten Blätter zwischen zwei Transportwalzen 4,5 und werden schliesslich auf einem schrägen Ablegestapel 7 abgelegt. Die beiden Wippen 2 sitzen auf einer im Querschnitt als Vierkant ausgebildeten Wippenachse 9, welche in den beiden Seitenwänden 8 drehbar gelagert ist. Durch Schrauben 11 können die Wippen 2 auf der Wippenachse 9 fixiert werden. Durch die Vierkantform der Wippenachse 9 ist sichergestellt, dass beide Wippen 2 eine synchrone Schwenkbewegung ausführen. Jede der beiden seitlichen, vertikalen Begrenzungswände 12 enthält einen sich nach oben öffnenden Schlitz 16, welcher von der Antriebswelle 14 für die Abzugsrollen 15 durchdrungen wird. Somit können sich die Wippen 2 verschwenken, ohne dass dies die Lage derAbzugsrollen 15 beeinflusst. Je eine auf der Antriebswelle 14 sitzende Distanzbuchse 46 greift mit ihrer radialen Rille 42 mit Spiel in den Schlitz 16 ein und ist mit der Abzugsrolle drehbar verbunden. Dadurch lässt sich die Wippe 2 entlang der Wippenachse 9 verschieben und dabei wird gleichzeitig die Abzugsrolle 15 mitverschoben.The device is used to feed single sheets or several sheets combined into a set to an office machine, for example a typewriter or printer, in which machine the sheets are labeled or printed in the usual way. The sheets lie in the form of a supply stack 6 on two rockers 2 arranged in parallel and are fed to a platen roller 3 by two drivable pull-off rollers 15. The labeled sheets then pass between two transport rollers 4, 5 and are finally placed on an inclined stack 7. The two rockers 2 are seated on a rocker shaft 9 which is designed as a square cross section and which is rotatably mounted in the two side walls 8. The rockers 2 can be fixed on the rocker axis 9 by screws 11. The square shape of the rocker axis 9 ensures that both rockers 2 perform a synchronous pivoting movement. Each of the two lateral, vertical boundary walls 12 contains an upwardly opening slot 16, which is penetrated by the drive shaft 14 for the take-off rollers 15. The rockers 2 can thus pivot without this influencing the position of the pull-off rollers 15. Each of the spacer bushes 46 seated on the drive shaft 14 engages with its radial groove 42 with play in the slot 16 and is rotatably connected to the take-off roller. This allows the rocker 2 to be moved along the rocker axis 9 and at the same time the pull-off roller 15 is also displaced.

Mit der Wippe 2 ist ein Profilblech 19 schwenkbar verbunden. Dieses ist in einer Schwenkachse 24 im hintern Drittel der Wippe 2 gelagert und enthält vorn einen Anschlag 18 für den Vorratsstapel 6, der oben in eine Führungsplatte 20 übergeht. Die Führungsplatte 20 erstreckt sich angenähert parallel zum Vorratsstapel 6. Die Lage der Führungsplatte 20 ist relativ zum Umfang der Abzugswalze 15 so gewählt, dass sich das oberste Blatt des Vorratsstapels 6 angenähert in gleicher Höhe wie die Oberkante der Führungsplatte 20 befindet. Der Anschlag 18 und die Führungsplatte 20 bilden zusammen einen rechten Winkel. Zwischen dem Profilblech 19 und dem Wippenboden 13 befindet sich eine Druckfeder 40, welche das Bestreben hat, die Wippe 2 samt dem sich auf dem Wippenboden 13 befindlichen Vorratsstapel 6 gegen die Abzugsrolle 15 anzudrücken, so dass die Abzugsrolle 15 mit Reibschluss gegen das oberste Blatt des Vorratsstapels anliegt.A profile plate 19 is pivotally connected to the rocker 2. This is mounted in a pivot axis 24 in the rear third of the rocker 2 and contains a stop 18 at the front for the supply stack 6, which merges into a guide plate 20 at the top. The guide plate 20 extends approximately parallel to the supply stack 6. The position of the guide plate 20 is chosen relative to the circumference of the draw-off roller 15 such that the top sheet of the supply stack 6 is approximately at the same height as the upper edge of the guide plate 20. The stop 18 and the guide plate 20 together form a right angle. Between the profiled sheet 19 and the rocker base 13 there is a compression spring 40 which strives to press the rocker 2 together with the supply stack 6 located on the rocker base 13 against the pull-off roller 15, so that the pull-off roller 15 is frictionally engaged against the top sheet of the Stack of supplies is present.

Zur Vereinzelung der auf dem Vorratsstapel liegenden Blätter und um eine Doppelförderung zu verhindern, ist jede Wippe 2 mit einer dreieckförmigen Vereinzelungsecke 28 versehen, welche den Vorratsstapel 6 an gegenüberliegenden Ecken oben überragt, wie dies insbesondere aus Fig. 4 ersichtlich ist. Jede Vereinzelungsecke 28 sitzt auf dem abgekröpften Teil 44 einer Schwenkplatte 26 und bildet ein einziges Stück. Die Schwenkplatte 26 ist um eine zur Wippenachse 9 parallele Drehachse 30 schwenkbar gelagert. Die Anordnung dieser Schwenkplatte 26 auf den beiden Wippen 2 ist spiegelbildlich. Diese Schwenkplatten 26 können sich sowohl relativ zu den Wippen 2 als auch relativ zum Profilblech 19 unabhängig bewegen. Das Profilblech 19 liegt mit seiner Unterseite gegen einen unbeweglichen Teil 32 an, der vorzugsweise ein Bestandteil der ganzen Baugruppe oder der Maschine ist. Auch die Schwenkplatte 26 stösst gegen diesen Teil 32, wenn der Wippenboden 13 zum Zwecke des Nachfüllens des Vorratsstapels in Richtung des Pfeiles B bewegt wird. Zur Abstützung des hintern Teiles des Vorratsstapels 6 ist jede Wippe mit einem U-förmigen Bügel versehen, der wegnehmbar ausgebildet ist und ausserdem im Nichtgebrauchszustand parallel zum Wippenboden 13 unter diesen eingeschoben werden kann.In order to separate the sheets lying on the supply stack and to prevent double conveyance, each rocker 2 is provided with a triangular separating corner 28, which projects above the supply stack 6 at opposite corners, as can be seen in particular from FIG. 4. Each separating corner 28 sits on the bent part 44 of a swivel plate 26 and forms a single piece. The pivot plate 26 is pivotally mounted about an axis of rotation 30 parallel to the rocker axis 9. The arrangement of this swivel plate 26 on the two rockers 2 is a mirror image. These swivel plates 26 can move independently of one another both relative to the rockers 2 and also relative to the profiled sheet 19. The underside of the profiled sheet 19 lies against an immovable part 32, which is preferably a component of the whole assembly or the machine. The swivel plate 26 also abuts against this part 32 when the rocker base 13 is moved in the direction of the arrow B for the purpose of refilling the supply stack. To support the rear part of the supply stack 6, each rocker is provided with a U-shaped bracket, which is designed to be removable and can also be pushed in parallel to the rocker base 13 when not in use.

Zwischen dem Vorratsstapel-Anschlag 18 und dem abgekröpften Teil 44 der Schwenkplatte 26, welcher die Vereinzelungsecke 28 trägt, ist ein Zwischenraum a vorhanden, so dass der Vorratsstapel 6 vorn nur am Anschlag 18 anliegt, um ein Klemmen zwischen Vorratsstapel 6 und Vereinzelungsecken 28 zu vermeiden.Between the supply stack stop 18 and the cranked part 44 of the swivel plate 26, which carries the separating corner 28, there is a space a, so that the supply stack 6 is only in front at the stop 18 in order to avoid jamming between the supply stack 6 and separating corners 28 .

Die Abzugsrollen 15 sind je mit einer nicht näher dargestellten Überholkupplung versehen, so dass sie sich auf einem in Richtung des Pfeiles C abgezogenen, obersten Blatt frei drehen können, ohne dass die Antriebswelle 14 mitdreht.The take-off rollers 15 are each provided with an overrunning clutch, not shown, so that they can rotate freely on an uppermost sheet pulled off in the direction of arrow C without the drive shaft 14 also rotating.

Die beiden Seitenwände 8 der Vorrichtung sind untereinander durch Streben 10 verbunden. Auf der Aussenseite der Seitenwände 8 befinden sich Abdeckhauben 38, welche die Antriebsorgane für die Antriebswelle 14 und damit die Abzugsrollen 15 überdecken. Die Ausbildung ist vorzugsweise so getroffen, dass die von der Schreibwalze 3 abgeleitete Bewegung durch Zahnriemen auf die Antriebswelle 14 übertragen wird unter Zwischenschaltung eines Getriebes mit unterbrochener Bewegung.The two side walls 8 of the device are connected to one another by struts 10. On the outside of the side walls 8 there are covers 38 which cover the drive elements for the drive shaft 14 and thus the take-off rollers 15. The design is preferably such that the movement derived from the platen roller 3 is transmitted to the drive shaft 14 by toothed belts with the interposition of a gear with an interrupted movement.

Zum Nachfüllen des Vorratsstapels 6 genügt es, gegen den Wippenboden 13 einen Druck in Richtung des Pfeiles B auszuüben und die neuen Blätter unter die Vereinzelungsecken 28 zu schieben. Bei einem Antrieb der Abzugsrollen 15 in Richtung des Pfeiles C wird auf das oberste Blatt durch Reibschluss eine Kraft in Richtung des Pfeiles C ausgeübt. Da dieses oberste Blatt vorerst an der Transportbewegung in Richtung des Pfeiles C durch die Vereinzelungsecken 28 gehindert ist, bildet es zwischen der Abzugsrolle 15 und den beiden Vereinzelungsecken 28 eine bogenförmige Wölbung und springt hernach überdie Vereinzelungsecken 28 hinaus. Dadurch wird auf besonders einfache Weise eine unerwünschte Doppelförderung von Blättern zuverlässig verhindert.To refill the supply stack 6, it is sufficient to exert pressure in the direction of arrow B against the rocker base 13 and to push the new sheets under the singling corners 28. When the take-off rollers 15 are driven in the direction of arrow C, a force in the direction of arrow C is exerted on the top sheet by friction. Since this uppermost sheet is initially prevented from moving in the direction of arrow C by the singling corners 28, it forms an arcuate curvature between the take-off roller 15 and the two singling corners 28 and then jumps beyond the singling corners 28. This reliably prevents unwanted double feeding of sheets in a particularly simple manner.

Claims (6)

1. Device for feeding an office machine, in particular a typewriter, with single sheets from a stack lying on a rocker (2) with a slanted, tiltable and sprung rocker base-plate (13), in which the upper sheet of the stack (6) lies in rubbing contact against two traction rollers (15) carried on a driving shaft (14), the stack (6) presses with the front edges of the sheets against a stack stop (18) and separating members (28) are provided for the sheets to be drawn off, characterized in that the device has two individually-sprung rockers (2) movable parallel to the driving shaft (14), each of which has a rocker base-plate (13), in which the two rockers (2) can be displaced in parallel by an horizontal axis (9) arranged parallel to the driving shaft (14), that the traction rollers (15) can be slid along the driving shaft (14), that the two rockers (2) are each connected via a coupling element (46,48) with one of the traction rollers (15) and each carries a separating member formed as separation corners (28), that the stack stop (18) is tiltably connected with the rockers (2), and that as appropriate a separation corner (28) is carried by a plate (26), which is secured to the corresponding rocker (2) tiltably about an axis (30) parallel to the rocker axis.
2. Device in accordance with Claim 1, characterized in that each rocker (2) has a vertical limiting wall (12) with a slit-shape opening (16), in which a spacing bush (46) provided with a groove (42) constituting the coupling element moves up and down, and which takes the traction roller (15) with it on displacement of the rocker (2).
3. Device according to Claim 1 or 2, characterized in that the stack stop (18) has an extension reaching under the rocker base-plate (13), which is movably connected with the rearmost third of the rocker (2) and between this extension (22) and the rocker base-plate (13) there is a compression spring (40).
4. Device according to Claim 3, characterized in that the separation corners (28) are each connected movably via a plate (26) with the corresponding rocker (2), and that there is a common stop part (32) for the extension (22) and the plate (26).
5. Device according to one of Claim 1 - 4, characterized in that each rocker (2) has a stirrup (34) which can be slid under the rocker base-plate or removed, and which acts as a support for the stack.
6. Device according to one of Claim 1 - 5, characterized in that between the stack stop (18) and a plate-part (44) carrying the separation ormers (28) which runs approximately parallel to this, there is a gap (a), such that the front edges of the sheets of the stack (6) lie only against the stack stop (18).
EP83810451A 1982-10-12 1983-10-04 Device for feeding an office machine with individual sheets Expired - Lifetime EP0106801B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH595782 1982-10-12
CH5957/82 1982-10-12

Publications (4)

Publication Number Publication Date
EP0106801A2 EP0106801A2 (en) 1984-04-25
EP0106801A3 EP0106801A3 (en) 1984-05-30
EP0106801B1 EP0106801B1 (en) 1986-01-29
EP0106801B2 true EP0106801B2 (en) 1992-07-15

Family

ID=4302112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810451A Expired - Lifetime EP0106801B2 (en) 1982-10-12 1983-10-04 Device for feeding an office machine with individual sheets

Country Status (5)

Country Link
US (2) US4558858A (en)
EP (1) EP0106801B2 (en)
JP (2) JPS59133139A (en)
CA (1) CA1215340A (en)
DE (1) DE3362035D1 (en)

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DE2816448C3 (en) * 1978-04-15 1981-01-08 Helmut 7210 Rottweil Steinhilber Device for feeding sheets of paper for an office writing machine
CH629449A5 (en) * 1978-04-18 1982-04-30 Albert Rutishauser Apparatus for transporting recording carriers in sheet form
US4222557A (en) * 1978-05-16 1980-09-16 Wang Laboratories, Inc. Printer feeding and stacking
US4262894A (en) * 1978-09-11 1981-04-21 Vydec, Inc. Apparatus for moving an object, in particular the top sheet of a stack of individual sheets of cut paper
JPS55160613A (en) * 1979-06-01 1980-12-13 Nec Corp Paper feeding mechanism
CH639345A5 (en) * 1979-09-07 1983-11-15 Kurt Ruenzi FEEDING DEVICE FOR PAPER SHEETS FOR A COPIER.
DE2941816C2 (en) * 1979-10-16 1985-05-09 Helmut 7210 Rottweil Steinhilber Device for feeding single sheets to the platen of an office machine
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US4277059A (en) * 1980-03-18 1981-07-07 International Business Machines Corporation Sheet feeder for typewriters
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DE3024036A1 (en) * 1980-06-26 1982-01-14 Rutishauser Data AG, 8712 Stäfa TRANSPORT DEVICE FOR SHEET-SHAPED RECORDER
US4371276A (en) * 1980-07-31 1983-02-01 Xerox Corporation Sheet stacking output tray

Also Published As

Publication number Publication date
CA1215340A (en) 1986-12-16
DE3362035D1 (en) 1986-03-13
US4558858A (en) 1985-12-17
JPH0712345U (en) 1995-02-28
JPS59133139A (en) 1984-07-31
US4711442A (en) 1987-12-08
EP0106801A2 (en) 1984-04-25
EP0106801B1 (en) 1986-01-29
EP0106801A3 (en) 1984-05-30

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