EP0484663A2 - Device for handling sheets in business machines - Google Patents

Device for handling sheets in business machines Download PDF

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Publication number
EP0484663A2
EP0484663A2 EP91116004A EP91116004A EP0484663A2 EP 0484663 A2 EP0484663 A2 EP 0484663A2 EP 91116004 A EP91116004 A EP 91116004A EP 91116004 A EP91116004 A EP 91116004A EP 0484663 A2 EP0484663 A2 EP 0484663A2
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
sheets
belt
pressure
magazines
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.)
Withdrawn
Application number
EP91116004A
Other languages
German (de)
French (fr)
Other versions
EP0484663A3 (en
Inventor
Helmut Steinhilber
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0484663A2 publication Critical patent/EP0484663A2/en
Publication of EP0484663A3 publication Critical patent/EP0484663A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0661—Rollers or like rotary separators for separating inclined-stacked articles with separator rollers above the stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/16—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains
    • B65H29/18—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains and introducing into a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/44—Simultaneously, alternately, or selectively separating articles from two or more piles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/10—Associating articles from a single source, to form, e.g. a writing-pad
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/026—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between belts and stationary pressing, supporting or guiding elements forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/53—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties
    • B65H2404/539—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties other
    • B65H2404/5391—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties other adhesive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/56—Flexible surface
    • B65H2404/561—Bristles, brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/10—Specific machines for handling sheet(s)
    • B65H2408/11—Sorters or machines for sorting articles
    • B65H2408/111—Sorters or machines for sorting articles with stationary location in space of the bins and a diverter per bin

Definitions

  • the invention relates to a device for transporting individual sheets of a sheet-like record carrier in office machines according to the preamble of claim 1.
  • the invention has for its object to provide a device of the type mentioned, in which the pressure device is simple and inexpensive.
  • the surface of the conveyor belt that receives the sheet is arranged opposite a flat body of the pressure device, which presses the sheet against the conveyor belt with thin, soft, elastic pressure elements.
  • the distance between the body of the pressure device and the conveyor belt and the length of the pressure elements is chosen so that on the one hand the conveyor belt does not come into contact with the body of the pressure device, which would lead to a strong frictional resistance for the conveyor belt and the transported sheets, and that on the other hand, the pressure elements are always included, even when there are fluctuations in distance, for example due to sagging of the conveyor belt are in contact with the conveyor belt so that the sheets are reliably held against the conveyor belt.
  • the elasticity of the pressure elements is chosen so that they hold the sheet in contact with the conveyor belt under slight pressure, but they yield to the conveyor belt and the continuous sheet sufficiently flexibly so that they do not cause any resistance to the transportation.
  • the pressure elements must not oppose the transported sheet with any frictional resistance that is greater than the force that carries the sheet between the sheet and the conveyor belt.
  • the body of the pressure device is preferably designed to be stationary, which enables a particularly simple construction.
  • the body can be a rigid plate or a tightly tensioned band. If only one magazine is provided, from which the sheets are transported, or only one storage compartment, to which the sheets are transported, the body of the pressure device can be designed as a continuous surface, the sheets at one end of the body between them and the conveyor belt enter and exit at the other end of the body.
  • the body of the pressure device can be provided with slots which run transversely to the transport device and which are assigned to the respective magazines or storage compartments and through which the sheets exit the magazines can enter or exit between the conveyor belt and the body of the pressure device.
  • the body of the pressure device can also be designed as a continuous flexible belt, one end of which is attached to the transfer unit and to the latter the other end is attacked by a spring force which on the one hand keeps the belt taut and on the other hand enables the belt to move with the transfer unit.
  • the belt moves with the transfer unit, so that it rests on the conveyor belt only in the region of the transport path that changes with the position of the transfer unit.
  • the pressure elements can be designed in a wide variety of ways, provided that only the conditions regarding their length and their elastic properties are met.
  • the pressure elements can in particular consist of bristles or thin rags, preferably made of plastic.
  • the required conditions can be optimally maintained through the choice of plastic material and the cross-section of the pressure elements.
  • the cross section of the pressure elements in the region of their free ends resting on the conveyor belt can be reduced so that their resistance to the sheets passing through is minimal.
  • the density with which the pressure elements are arranged on the body is determined so that a reliable pressure with the least possible resistance is achieved. A too tight arrangement increases the resistance.
  • the mutual distance of the pressure elements must be smaller than the linear dimensions of the sheet, preferably be significantly smaller than these dimensions, so that the sheet is reliably held against the conveyor belt over its entire surface.
  • the pressure elements can be arranged on the body in a uniform distribution. It is also possible to only occupy strips of the body running in the transport direction with pressure elements, the transverse spacing of these strips of course having to be smaller than the transverse dimensions of the sheet.
  • the pressure device according to the invention can be used with vertically and horizontally transporting conveyor belts.
  • the pressing device can hold the sheets lying on the upper run of the transport belt or from below on the lower run of the transport belt.
  • sheets 10 of a sheet-like recording medium are stored in a stack in a magazine 12 designed as a cassette.
  • the stack of sheets 10 is pressed in a manner known per se by means of a spring-loaded base against a pull-off roller 14, which occasionally pulls the sheets 10 off the stack.
  • an endlessly driven conveyor belt 18 is provided around the isolated sheets 10 of the processing station of an office machine 16, e.g. of a printer or a copier.
  • the conveyor belt 18 consists of a belt or a plurality of belts made of an adhesive plastic or rubber material running parallel and side by side.
  • the sheets 10 lying on the conveyor belt 18 are non-positively entrained by the adhesive property of the conveyor belt 18.
  • the magazine 12 is arranged under the office machine 16 and the sheets 10 are conveyed upward by the vertically running conveyor belt 18 to a feed nip of the office machine 16.
  • a pressure device with a flat body in the form of a plate 20 made of a light plastic is provided.
  • the Plate 20 is filled with pressure elements in the form of bristles 22 made of plastic.
  • the plate 20 has a width which corresponds to the width of the conveyor belt 18. In the direction of transport, the plate 20 extends over the entire length of the transport path of the sheets 10.
  • the plate 20 is fixedly attached parallel to the upward conveying strand of the conveyor belt 18, the plate 20 being a short distance of, for example, 3 to 10 mm from the Has conveyor belt 18.
  • the bristles 22 are inserted into the plate 20 or are preferably also molded onto the plate 20 from plastic.
  • the length of the bristles 22 is somewhat larger (for example 2-3 mm) than the distance of the plate 20 from the transporting strand of the conveyor belt 18. The ends of the bristles 22 accordingly lie against the conveyor belt 18.
  • the bristles 22 are kept so thin at least at their ends in cross section that they are soft-elastic in connection with the elastic properties of their material at least in the area adjacent to the conveyor belt 18 and are bent by the circulating conveyor belt 18 and with only slight pressure on the Conveyor belt 18 abut.
  • the plate 20 is evenly covered with bristles 22 over its entire surface facing the conveyor belt 18, the bristles being at a relatively large mutual distance, which is, however, small in relation to the length and width dimensions of the sheets 10.
  • the sheets 10, which are individually pulled out of the magazine 12 by the take-off roller 14, are pushed at the lower edge of the plate 20 between the latter and the conveying run of the conveyor belt 18 running upwards.
  • the bristles 22 of the plate 20 press the sheet 10 gently against the conveyor belt 18 so that it takes the sheet 10 non-positively.
  • the sheet 10 emerges at the upper edge of the plate 20 between the plate 20 and the conveyor belt 18 and is deflected into the feed nip of the office machine 16.
  • the length of the bristles 22 is greater than the distance of the plate 20 from the conveyor belt 18, the ends of the bristles 22 always abut the conveyor belt 18, even if the distance between the plate 20 and the conveyor belt 18 changes due to fluttering or bending of the conveyor belt 18 changes slightly.
  • the sheets 10 are therefore always reliably held against the conveyor belt 18 over their entire surface.
  • the soft elastic properties of the bristles 22 ensure that the bristles 22 do not exert any significant braking action on the conveyor belt 18.
  • the resistance that the bristles 22 offer to the transported sheet 10 is substantially lower than the frictional force between the sheet 10 and the conveyor belt 18 that carries the sheets 10.
  • the pressure elements can also have the shape of thin tabs which are formed on the plate 20 and protrude from the latter against the conveyor belt 18.
  • the width of the flaps extends transversely to the direction of transport.
  • the length of the tabs corresponds to the length of the bristles 22, the tabs being of a small thickness in the direction of transport and, in particular in their end region, having soft-elastic properties as described above for the bristles 22.
  • FIG. 1 A second embodiment of the transport device according to the invention is described in FIG.
  • magazines 12 are provided, each of which holds an upright stack of sheets 10.
  • a pull-off roller 14 is assigned to each magazine 12, the pull-off rollers 14 being selectively controllable in order to feed a sheet of a certain type from a selected magazine 12 to the office machine 16.
  • the conveyor belt 18 runs horizontally above the magazines 12 arranged one behind the other.
  • the conveyor belt 18 extends over all the magazines 12 up to the feed gap of the office machine 16.
  • the flat body of the pressing device is arranged between the upper edge of the magazines 12 and the lower conveying run of the conveyor belt 18 .
  • the flat body consists of a belt 24, which extends over the entire length of the lower conveying run of the conveyor belt 18.
  • the band 24 is arranged in a fixed and taut manner by means of clamping strips 26 attached to its edges.
  • the upper side of the belt 24 facing the conveyor belt 18 is covered with bristles 22 which, in the manner described above, rest against the conveying lower run of the conveyor belt 18 from below due to their flexible properties and their length and the distance of the belt 24 from the conveyor belt 18.
  • the belt 24 has a slot 28 above each magazine 12 which extends transversely to the transport direction extends across the width of the magazine 12.
  • the take-off roller 14 of the respectively selected magazine 12 If the take-off roller 14 of the respectively selected magazine 12 is activated, it pushes the top sheet 10 of the stack upwards out of this magazine.
  • the sheet 10 passes through the slot 28 of the belt 24 arranged above this magazine 12 and passes between the lower conveying strand of the conveyor belt 18 and the bristles 22 arranged on the belt 24.
  • the bristles 22 of the belt 24 make the sheet 10 from below pressed against the conveyor belt 18 and frictionally carried by it in order to be delivered to the office machine 16 at the end of the conveyor belt 18.
  • the bristles 22 hold the sheet 10 in contact with the conveyor belt 18 over its entire surface in order to ensure reliable adhesion between the sheet 10 and the conveyor belt 18.
  • the dimension of the slots 28 in the transport direction is substantially less than the length of the sheets 10, so that the sheets 10 are reliably supported even when crossing the slots 28 of subsequent magazines 12. If necessary, an inlet bevel can be formed on the edge of the slots 28 lying in the conveying direction, which promotes the penetration of the sheets 10 fed from below from the magazine 12 between the belt 24 and the conveyor belt 18. Such an inclined slope also guarantees that the leading edge of the sheet 10 is not deflected downward out of the slot 28 when crossing the slots 28 following in the transport direction.
  • the length of the bristles 22 in particular also ensures the compensation of differences in distance between the band 24 and the lower run of the Conveyor belt 18 due to some sagging of the belt 24.
  • FIG. 1 A third embodiment is shown in FIG. 1
  • a plurality of magazines 12 designed as paper chutes, each with take-off rollers 14, are arranged one behind the other over the horizontally running conveyor belt 18.
  • the sheets 10 drawn off by the take-off rollers 14 from a respectively selected magazine 12 reach the conveying upper run of the conveyor belt 18 and are transported by the latter to the office machine 16.
  • this flat body of the pressing device is arranged at a distance above the upper run of the conveyor belt 18.
  • this flat body consists of a rigid plate 20 which is covered with bristles 22 on its underside, as is described with reference to the exemplary embodiment in FIG.
  • the plate 20 has a slot 28 assigned to each magazine, as is shown in connection with the exemplary embodiment of FIG Figure 2 is described.
  • FIG. 1 A fourth embodiment is shown in FIG. 1
  • This embodiment corresponds to the embodiment of FIG. 2 insofar as several magazines 12 with upright standing stack of sheets 10 are arranged under the horizontally rotating conveyor belt 18.
  • This take-off roller 14 is arranged on a transfer unit 30, which overlaps the conveyor belt 18 in the form of a bridge and can be moved on guide rails 32 along the conveyor belt 18 above the magazines 12.
  • the transfer unit 30 is moved in a controlled manner over the respectively selected magazine 12, whereupon the take-off roller 14 is pivoted downward against the stack of sheets 10 of this magazine 12 into the position shown in FIG. 5, around the uppermost sheet 10 of the stack from the magazine 12 deduct.
  • the flat body of the pressing device consists of a flexible belt 34, which is covered with bristles 22 in the manner described above on its surface facing the lower transporting strand of the transport belt 18.
  • One end of the belt 34 is attached to the transfer unit 30.
  • the belt 34 runs parallel to the lower run of the conveyor belt 18 and is guided downwards at its end via a deflection roller 36, where it is wound onto a drum 38 under spring tension.
  • the transfer unit 30 pulls the band 34 off the drum 38 against the spring load. If, on the other hand, the transfer unit 30 is moved to the right, the excess length of the belt 34 is wound onto the drum 38.
  • the spring tension of the drum 38 ensures that the belt 34 is always kept taut and is tensioned between the transfer unit 30 and the deflection roller 36 parallel to the conveying lower run of the conveyor belt 18 at the predetermined distance therefrom.
  • the sheet 10 pulled by the transfer unit 30 from the respectively selected magazine 12 passes between the end of the belt 34 and the lower run of the conveyor belt 18 and is held by the belt 34 over the entire transport path until the sheet 10 is delivered to the conveyor belt 18 .
  • no slots 28 are required in the band 34 even with a plurality of magazines 12.
  • FIG. 1 A fifth embodiment is shown in FIG.
  • the transport device is used in connection with a sorter.
  • the sheets 10 coming from an office machine, for example a printer or a copier, are guided at the top between the downward conveying run of the vertically rotating endless conveyor belt 18 and the flat body of the pressing device.
  • the conveyor belt 18 runs in front of storage compartments 40 arranged vertically one above the other.
  • Each storage compartment 40 is assigned a switch 42 which can be pivoted out of the conveying path of the sheets 10 behind the downward run of the conveyor belt 18. Controlled, the switches 42 can be pivoted into an operating position in which they reach between the belts of the conveyor belt 18 into the path of movement of the sheets 10 in order to deflect them into the associated storage compartment 40. This position is shown in Figure 6 for the middle switch 42.
  • the flat body of the pressure device consists of a firmly clamped belt 24, which is covered with bristles 22 on the side facing the conveyor belt 18, as described in connection with the exemplary embodiment in FIGS. 2 and 3.
  • the belt 24 has in front of each storage compartment 40 a slot 28 running transversely to the transport direction, through which the sheets 10 deflected by the switch 42 pass and can be directed into the associated storage compartment 40.
  • the pressure device according to the invention can be used with vertically and horizontally rotating conveyor belts, the conveying strand being the upward or downward strand of the vertical conveyor belt and also the upper or lower strand of the horizontally rotating conveyor belt can be.
  • the pressure device can be used in all cases for feeding sheets from one or more magazines and for storing sheets in one or more storage compartments.
  • the pressure device can be used in all other sheet transport operations by means of circulating conveyor belts.
  • the form in which the flat body of the pressure device and the pressure elements are designed is determined by the special requirements of the application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

Es wird eine Vorrichtung zum Transportieren von vereinzelten Bogen (10) eines blattförmigen Aufzeichnungsträgers in Büromaschinen beschrieben. Die Bogen (10) werden durch ein endlos umlaufendes Transportband (18) gefördert. Um die Bogen (10) an dem Transportband (18) kraftschlüssig anliegend zu halten, ist eine Andruckeinrichtung vorgesehen, die einen zu dem Transportband (18) parallelen flächigen Körper (24) aufweist, der mit dünnen, weichelastischen Andruckelementen (22) an dem Transportband (18) anliegt und den Bogen (10) gegen das Transportband (18) drückt. <IMAGE>A device for transporting individual sheets (10) of a sheet-like record carrier in office machines is described. The sheets (10) are conveyed by an endless circulating conveyor belt (18). In order to hold the sheets (10) in a force-fitting manner on the conveyor belt (18), a pressure device is provided which has a flat body (24) which is parallel to the conveyor belt (18) and which has thin, flexible pressure elements (22) on the conveyor belt (18) abuts and presses the sheet (10) against the conveyor belt (18). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Transportieren von vereinzelten Bogen eines blattförmigen Aufzeichnungsträgers in Büromaschinen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for transporting individual sheets of a sheet-like record carrier in office machines according to the preamble of claim 1.

In den verschiedensten Arten von Büromaschinen müssen vereinzelte Bogen von blattförmigen Aufzeichnungsträgern transportiert werden. Der Transport kann beispielsweise von einem oder mehreren die Bogen gestapelt aufnehmenden Magazinen zu einer Bearbeitungsstation, z.B. zu einem Drucker oder einem Kopierer erfolgen. Ebenso kann der Transport von der Bearbeitungsstation zu einem Ablagefach oder zu mehreren Ablagefächern eines Sortierers erfolgen. Es ist bekannt, für einen solchen Transport ein endlos umlaufendes Transportband zu verwenden, welches die Bogen kraftschlüssig mitnimmt. Für die kraftschlüssige Mitnahme ist es notwendig, den Bogen an dem Transportband unter leichtem Druck anliegend zu halten. Hierzu sind verschiedene Andruckeinrichtungen bekannt. Es kann parallel zu dem Transportband ein zweites endlos umlaufendes Andruckband verwendet werden, wobei die Bogen zwischen dem Transportband und dem Andruckband aufgenommen werden. Weiter ist es bekannt, an dem Transportband anliegende frei laufende Rollen vorzusehen, wobei der Bogen zwischen den Rollen und dem Transportband geführt wird. Schließlich ist es bekannt, auf der Rückseite des Transportbands eine Unterdruckkammer anzuordnen, wobei der Bogen durch den Unterdruck an das Transportband angesaugt wird. Alle diese bekannten Vorrichtungen sind konstruktiv aufwendig.In various types of office machines, individual sheets of sheet-like recording media have to be transported. The transport can take place, for example, from one or more magazines, which stack the sheets, to a processing station, for example to a printer or a copier. Transport from the processing station to a storage compartment or to several storage compartments of a sorter can also take place. It is known to use an endlessly revolving conveyor belt for such a transport, which takes the sheets non-positively. For the frictional entrainment, it is necessary to hold the sheet against the conveyor belt under slight pressure. Various pressure devices are known for this. A second endlessly rotating pressure belt can be used parallel to the conveyor belt, the sheets being accommodated between the conveyor belt and the pressure belt will. Furthermore, it is known to provide free-running rollers resting on the conveyor belt, the sheet being guided between the rollers and the conveyor belt. Finally, it is known to arrange a vacuum chamber on the back of the conveyor belt, the sheet being sucked onto the conveyor belt by the vacuum. All these known devices are structurally complex.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Gattung zu schaffen, bei welcher die Andruckeinrichtung einfach und kostengünstig ausgebildet ist.The invention has for its object to provide a device of the type mentioned, in which the pressure device is simple and inexpensive.

Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des kennzeichnenden Teils des Anspruchs 1.This object is achieved according to the invention by the features of the characterizing part of claim 1.

Vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Erfindungsgemäß ist der den Bogen aufnehmenden Fläche des Transportbandes gegenüber ein flächiger Körper der Andruckeinrichtung angeordnet, der mit dünnen weichelastischen Andruckelementen den Bogen gegen das Transportband drückt. Der Abstand zwischen dem Körper der Andruckeinrichtung und dem Transportband und die Länge der Andruckelemente ist so gewählt, daß einerseits das Transportband nicht mit dem Körper der Andruckeinrichtung in Berührung kommt, was zu einem starken Reibungswiderstand für das Transportband und die transportierten Bogen führen würde, und daß andererseits die Andruckelemente auch bei Abstandsschwankungen, z.B. aufgrund eines Durchhängens des Transportbandes, stets mit dem Transportband in Berührung stehen, so daß die Bogen zuverlässig an dem Transportband anliegend gehalten werden. Die Elastizität der Andruckelemente ist so gewählt, daß diese den Bogen zwar unter leichtem Druck an dem Transportband anliegend halten, aber dem Transportband und dem durchlaufenden Bogen genügend nachgiebig ausweichen, so daß sie keinen den Transport behindernden Widerstand verursachen. Insbesondere dürfen die Andruckelemente dem transportierten Bogen keinen Reibungswiderstand entgegensetzen, der größer ist als die den Bogen mitnehmende Kraft zwischen dem Bogen und dem Transportband.According to the invention, the surface of the conveyor belt that receives the sheet is arranged opposite a flat body of the pressure device, which presses the sheet against the conveyor belt with thin, soft, elastic pressure elements. The distance between the body of the pressure device and the conveyor belt and the length of the pressure elements is chosen so that on the one hand the conveyor belt does not come into contact with the body of the pressure device, which would lead to a strong frictional resistance for the conveyor belt and the transported sheets, and that on the other hand, the pressure elements are always included, even when there are fluctuations in distance, for example due to sagging of the conveyor belt are in contact with the conveyor belt so that the sheets are reliably held against the conveyor belt. The elasticity of the pressure elements is chosen so that they hold the sheet in contact with the conveyor belt under slight pressure, but they yield to the conveyor belt and the continuous sheet sufficiently flexibly so that they do not cause any resistance to the transportation. In particular, the pressure elements must not oppose the transported sheet with any frictional resistance that is greater than the force that carries the sheet between the sheet and the conveyor belt.

Der Körper der Andruckeinrichtung ist vorzugsweise feststehend ausgebildet, was eine konstruktiv besonders einfache Ausführung ermöglicht. Der Körper kann eine steife Platte oder ein festliegend gespanntes Band sein. Ist nur ein Magazin vorgesehen, aus welchem die Bogen abtransportiert werden, oder nur ein Ablagefach, zu dem die Bogen transportiert werden, so kann der Körper der Andruckeinrichtung als durchgehende Fläche ausgebildet sein, wobei die Bogen an einem Ende des Körpers zwischen diesen und das Transportband eintreten und am anderen Ende des Körpers wieder austreten. Sollen durch das Transportband Bogen aus mehreren hintereinander angeordneten Magazinen zugeführt oder in mehrere hintereinander angeordnete Ablagefächer abgegeben werden, so kann der Körper der Andruckeinrichtung mit quer zur Transporteinrichtung verlaufenden Schlitzen versehen sein, die den jeweiligen Magazinen bzw. Ablagefächern zugeordnet sind und durch welche die Bogen aus den Magazinen zwischen das Transportband und den Körper der Andruckeinrichtung eintreten bzw. wieder austreten können.The body of the pressure device is preferably designed to be stationary, which enables a particularly simple construction. The body can be a rigid plate or a tightly tensioned band. If only one magazine is provided, from which the sheets are transported, or only one storage compartment, to which the sheets are transported, the body of the pressure device can be designed as a continuous surface, the sheets at one end of the body between them and the conveyor belt enter and exit at the other end of the body. If sheets are to be fed through the conveyor belt from a plurality of magazines arranged one behind the other or are to be dispensed into a plurality of storage compartments arranged one behind the other, the body of the pressure device can be provided with slots which run transversely to the transport device and which are assigned to the respective magazines or storage compartments and through which the sheets exit the magazines can enter or exit between the conveyor belt and the body of the pressure device.

Ist eine verfahrbare Übergabeeinheit vorgesehen, die gesteuert Bogen wahlweise aus einem von mehreren Magazinen entnimmt oder wahlweise in eines von mehreren Ablagefächern abgibt, so kann der Körper der Andruckeinrichtung auch als durchgehendes flexibles Band ausgebildet sein, dessen eines Ende an der Übergabeeinheit angebracht ist und an dessen anderem Ende eine Federkraft angreift, die das Band einerseits gespannt hält und andererseits eine Bewegung des Bandes mit der Übergabeeinheit ermöglicht. Das Band bewegt sich in diesem Falle mit der Übergabeeinheit, so daß es nur in dem Bereich des sich mit der Position der Übergabeeinheit ändernden Transportweges der Bogen an dem Transportband anliegt.If a movable transfer unit is provided, which removes sheets from one of several magazines in a controlled manner or optionally delivers them into one of several storage compartments, the body of the pressure device can also be designed as a continuous flexible belt, one end of which is attached to the transfer unit and to the latter the other end is attacked by a spring force which on the one hand keeps the belt taut and on the other hand enables the belt to move with the transfer unit. In this case, the belt moves with the transfer unit, so that it rests on the conveyor belt only in the region of the transport path that changes with the position of the transfer unit.

Die Andruckelemente können in unterschiedlichster Weise ausgebildet sein, sofern nur die Bedingungen bezüglich ihrer Länge und ihrer elastischen Eigenschaft erfüllt sind. Die Andruckelemente können insbesondere als Borsten oder dünne Lappen, vorzugsweise aus Kunststoff, bestehen. Durch die Wahl des Kunststoffmaterials und den Querschnitt der Andruckelemente können die geforderten Bedingungen optimal eingehalten werden. Insbesondere kann der Querschnitt der Andruckelemente im Bereich ihrer an dem Transportband anliegenden freien Ende so verringert werden, daß ihr Widerstand gegen die durchlaufenden Bogen minimal ist.The pressure elements can be designed in a wide variety of ways, provided that only the conditions regarding their length and their elastic properties are met. The pressure elements can in particular consist of bristles or thin rags, preferably made of plastic. The required conditions can be optimally maintained through the choice of plastic material and the cross-section of the pressure elements. In particular, the cross section of the pressure elements in the region of their free ends resting on the conveyor belt can be reduced so that their resistance to the sheets passing through is minimal.

Die Dichte, mit welcher die Andruckelemente auf dem Körper angeordnet sind, ist so bestimmt, daß ein zuverlässiger Andruck mit möglichst geringem Widerstand erreicht wird. Eine zu dichte Anordnung erhöht den Widerstand. Andererseits muß der gegenseitige Abstand der Andruckelemente kleiner sein als die linearen Abmessungen des Bogens, vorzugsweise deutlich kleiner sein als diese Abmessungen, damit der Bogen über seine ganze Fläche zuverlässig an dem Transportband anliegend gehalten wird. Die Andruckelemente können in gleichmäßiger Verteilung auf dem Körper angeordnet sein. Ebenso ist es möglich, nur in Transportrichtung verlaufende Streifen des Körpers mit Andruckelementen zu besetzen, wobei der Querabstand dieser Streifen selbstverständlich kleiner als die Querabmessungen des Bogens sein muß.The density with which the pressure elements are arranged on the body is determined so that a reliable pressure with the least possible resistance is achieved. A too tight arrangement increases the resistance. On the other hand, the mutual distance of the pressure elements must be smaller than the linear dimensions of the sheet, preferably be significantly smaller than these dimensions, so that the sheet is reliably held against the conveyor belt over its entire surface. The pressure elements can be arranged on the body in a uniform distribution. It is also possible to only occupy strips of the body running in the transport direction with pressure elements, the transverse spacing of these strips of course having to be smaller than the transverse dimensions of the sheet.

Die erfindungsgemäße Andruckeinrichtung kann bei vertikal und bei horizontal transportierenden Transportbändern eingesetzt werden. Bei horizontal transportierenden Transportbändern kann die Andruckeinrichtung die Bogen auf dem oberen Trum des Transportbandes aufliegend oder von unten an dem unteren Trum des Transportbandes anliegend halten.The pressure device according to the invention can be used with vertically and horizontally transporting conveyor belts. In the case of horizontally transporting conveyor belts, the pressing device can hold the sheets lying on the upper run of the transport belt or from below on the lower run of the transport belt.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen näher erläutert. Es zeigen

Figur 1
eine schematische Seitenansicht einer ersten Ausführungsform der Vorrichtung zum Transportieren von vereinzelten Bogen,
Figur 2
eine schematische Seitenansicht einer zweiten Ausführungsform,
Figur 3
eine Teil-Draufsicht gemäß der Linie A-A in Figur 2,
Figur 4
eine schematische Seitenansicht einer dritten Ausführungsform,
Figur 5
eine schematische Seitenansicht einer vierten Ausführungsform und
Figur 6
eine schematische Seitenansicht einer fünften Ausführungsform.
The invention is explained in more detail below on the basis of exemplary embodiments. Show it
Figure 1
2 shows a schematic side view of a first embodiment of the device for transporting individual sheets,
Figure 2
2 shows a schematic side view of a second embodiment,
Figure 3
3 shows a partial top view along the line AA in FIG. 2,
Figure 4
2 shows a schematic side view of a third embodiment,
Figure 5
is a schematic side view of a fourth embodiment and
Figure 6
is a schematic side view of a fifth embodiment.

Im Ausführungsbeispiel der Figur 1 sind Bogen 10 eines blattförmigen Aufzeichnungsträgers in einem als Kassette ausgebildeten Magazin 12 gestapelt bevorratet. Der Stapel der Bogen 10 wird in an sich bekannter Weise mittels eines federbelasteten Bodens gegen eine Abzugsrolle 14 gedrückt, die die Bogen 10 vereinzelt von dem Stapel abzieht.In the exemplary embodiment in FIG. 1, sheets 10 of a sheet-like recording medium are stored in a stack in a magazine 12 designed as a cassette. The stack of sheets 10 is pressed in a manner known per se by means of a spring-loaded base against a pull-off roller 14, which occasionally pulls the sheets 10 off the stack.

Um die vereinzelten Bogen 10 der Bearbeitungsstation einer Büromaschine 16, z.B. eines Druckers oder eines Kopierers, zuzuführen, ist ein endlos umlaufend angetriebenes Transportband 18 vorgesehen. Das Transportband 18 besteht aus einem Band oder mehreren parallel nebeneinander verlaufenden Riemen aus einem adhäsiven Kunststoff- oder Gummimaterial. Die an dem Transportband 18 anliegenden Bogen 10 werden durch die adhäsive Eigenschaft des Transportbandes 18 kraftschlüssig mitgenommen.Around the isolated sheets 10 of the processing station of an office machine 16, e.g. of a printer or a copier, an endlessly driven conveyor belt 18 is provided. The conveyor belt 18 consists of a belt or a plurality of belts made of an adhesive plastic or rubber material running parallel and side by side. The sheets 10 lying on the conveyor belt 18 are non-positively entrained by the adhesive property of the conveyor belt 18.

In dem in Figur 1 dargestellten Ausführungsbeispiel ist das Magazin 12 unter der Büromaschine 16 angeordnet und die Bogen 10 werden durch das vertikal laufende Transportband 18 nach oben zu einem Einzugsspalt der Büromaschine 16 gefördert. Um die Bogen 10 an dem nach oben laufenden fördernden Trum des Transportbandes 18 anliegend zu halten, ist eine Andruckeinrichtung mit einem flächigen Körper in Form einer Platte 20 aus einem leichten Kunststoff vorgesehen. Die Platte 20 ist mit Andruckelementen in Form von Borsten 22 aus Kunststoff besetzt. Die Platte 20 weist eine Breite auf, die der Breite des Transportbandes 18 entspricht. In Transportrichtung erstreckt sich die Platte 20 über die gesamte Länge des Transportweges der Bogen 10. Die Platte 20 ist feststehend parallel zu dem nach oben laufenden fördernden Trum des Transportbandes 18 angebracht, wobei die Platte 20 einen geringen Abstand von beispielsweise 3 - 10 mm zu dem Transportband 18 hat. Die Borsten 22 sind in die Platte 20 eingesetzt oder sind vorzugsweise ebenfalls aus Kunststoff an der Platte 20 angeformt. Die Länge der Borsten 22 ist etwas größer (beispielsweise 2 - 3 mm) als der Abstand der Platte 20 von dem transportierenden Trum des Transportbandes 18. Die Borsten 22 liegen dementsprechend mit ihren Ende an dem Transportband 18 an. Die Borsten 22 sind zumindest an ihren Enden im Querschnitt so dünn gehalten, daß sie in Verbindung mit den elastischen Eigenschaften ihres Materials zumindest in dem an dem Transportband 18 anliegenden Bereich weichelastisch sind und von dem umlaufenden Transportband 18 abgebogen werden und mit nur geringem Druck an dem Transportband 18 anliegen.In the exemplary embodiment shown in FIG. 1, the magazine 12 is arranged under the office machine 16 and the sheets 10 are conveyed upward by the vertically running conveyor belt 18 to a feed nip of the office machine 16. In order to hold the sheets 10 in contact with the upward conveying strand of the conveyor belt 18, a pressure device with a flat body in the form of a plate 20 made of a light plastic is provided. The Plate 20 is filled with pressure elements in the form of bristles 22 made of plastic. The plate 20 has a width which corresponds to the width of the conveyor belt 18. In the direction of transport, the plate 20 extends over the entire length of the transport path of the sheets 10. The plate 20 is fixedly attached parallel to the upward conveying strand of the conveyor belt 18, the plate 20 being a short distance of, for example, 3 to 10 mm from the Has conveyor belt 18. The bristles 22 are inserted into the plate 20 or are preferably also molded onto the plate 20 from plastic. The length of the bristles 22 is somewhat larger (for example 2-3 mm) than the distance of the plate 20 from the transporting strand of the conveyor belt 18. The ends of the bristles 22 accordingly lie against the conveyor belt 18. The bristles 22 are kept so thin at least at their ends in cross section that they are soft-elastic in connection with the elastic properties of their material at least in the area adjacent to the conveyor belt 18 and are bent by the circulating conveyor belt 18 and with only slight pressure on the Conveyor belt 18 abut.

Die Platte 20 ist über ihre gesamte dem Transportband 18 zugewandte Fläche gleichmäßig mit Borsten 22 besetzt, wobei die Borsten einen relativ großen gegenseitigen Abstand aufweisen, der jedoch klein ist im Verhältnis zu den Längen- und Breitenabmessungen der Bogen 10.The plate 20 is evenly covered with bristles 22 over its entire surface facing the conveyor belt 18, the bristles being at a relatively large mutual distance, which is, however, small in relation to the length and width dimensions of the sheets 10.

Die durch die Abzugsrolle 14 aus dem Magazin 12 vereinzelt abgezogenen Bogen 10 werden an der unteren Kante der Platte 20 zwischen diese und das nach oben laufende fördernde Trum des Transportbandes 18 geschoben. Die Borsten 22 der Platte 20 drücken dabei den Bogen 10 sanft gegen das Transportband 18, so daß dieses den Bogen 10 kraftschlüssig mitnimmt. Der Bogen 10 tritt am oberen Rand der Platte 20 zwischen der Platte 20 und dem Transportband 18 aus und wird in den Einzugsspalt der Büromaschine 16 umgelenkt.The sheets 10, which are individually pulled out of the magazine 12 by the take-off roller 14, are pushed at the lower edge of the plate 20 between the latter and the conveying run of the conveyor belt 18 running upwards. The bristles 22 of the plate 20 press the sheet 10 gently against the conveyor belt 18 so that it takes the sheet 10 non-positively. The sheet 10 emerges at the upper edge of the plate 20 between the plate 20 and the conveyor belt 18 and is deflected into the feed nip of the office machine 16.

Weil die Länge der Borsten 22 größer ist als der Abstand der Platte 20 von dem Transportband 18, liegen die Borsten 22 mit ihren Enden immer an dem Transportband 18 an, auch wenn sich der Abstand zwischen der Platte 20 und dem Transportband 18 durch Flattern oder Durchbiegen des Transportbandes 18 geringfügig ändert. Die Bogen 10 werden daher stets zuverlässig über ihre gesamte Fläche an dem Transportband 18 anliegend gehalten. Die weichelastischen Eigenschaften der Borsten 22 gewährleisten dabei, daß die Borsten 22 keine wesentliche Bremswirkung auf das Transportband 18 ausüben. Insbesondere ist der Widerstand, den die Borsten 22 den transportierten Bogen 10 bieten, wesentlich geringer als die die Bogen 10 mitnehmende Reibungskraft zwischen Bogen 10 und Transportband 18.Because the length of the bristles 22 is greater than the distance of the plate 20 from the conveyor belt 18, the ends of the bristles 22 always abut the conveyor belt 18, even if the distance between the plate 20 and the conveyor belt 18 changes due to fluttering or bending of the conveyor belt 18 changes slightly. The sheets 10 are therefore always reliably held against the conveyor belt 18 over their entire surface. The soft elastic properties of the bristles 22 ensure that the bristles 22 do not exert any significant braking action on the conveyor belt 18. In particular, the resistance that the bristles 22 offer to the transported sheet 10 is substantially lower than the frictional force between the sheet 10 and the conveyor belt 18 that carries the sheets 10.

Die Andruckelemente können anstelle der Form von Borsten 22 auch die Form von dünnen Lappen aufweisen, die an der Platte 20 angeformt sind und von dieser gegen das Transportband 18 abstehen. Die Breite der Lappen erstreckt sich quer zur Transportrichtung. Die Länge der Lappen entspricht der Länge der Borsten 22, wobei die Lappen in Transportrichtung eine geringe Stärke aufweisen und insbesondere in ihrem Endbereich weichelastische Eigenschaften aufweisen, wie sie vorstehend für die Borsten 22 beschrieben sind.Instead of the shape of bristles 22, the pressure elements can also have the shape of thin tabs which are formed on the plate 20 and protrude from the latter against the conveyor belt 18. The width of the flaps extends transversely to the direction of transport. The length of the tabs corresponds to the length of the bristles 22, the tabs being of a small thickness in the direction of transport and, in particular in their end region, having soft-elastic properties as described above for the bristles 22.

In Figur 2 ist eine zweite Ausführungsform der erfindungsgemäßen Transportvorrichtung beschrieben.A second embodiment of the transport device according to the invention is described in FIG.

Es sind mehrere Magazine 12 vorgesehen, die jeweils einen hochkant stehenden Stapel von Bogen 10 aufnehmen. Jedem Magazin 12 ist eine Abzugsrolle 14 zugeordnet, wobei die Abzugsrollen 14 wahlweise ansteuerbar sind, um einen Bogen einer bestimmten Art aus einem ausgewählten Magazin 12 zu der Büromaschine 16 zuzuführen.Several magazines 12 are provided, each of which holds an upright stack of sheets 10. A pull-off roller 14 is assigned to each magazine 12, the pull-off rollers 14 being selectively controllable in order to feed a sheet of a certain type from a selected magazine 12 to the office machine 16.

Über den hintereinander angeordneten Magazinen 12 verläuft horizontal das Transportband 18. Das Transportband 18 erstreckt sich über sämtliche Magazine 12 bis zu dem Einzugsspalt der Büromaschine 16. Zwischen der Oberkante der Magazine 12 und dem unteren fördernden Trum des Transportbandes 18 ist der flächige Körper der Andruckeinrichtung angeordnet. Der flächige Körper besteht in diesem Ausführungsbeispiel aus einem Band 24, das sich über die gesamte Länge des unteren fördernden Trums des Transportbandes 18 erstreckt. Das Band 24 ist, wie in Figur 3 zu erkennen ist, durch an seinen Kanten angebrachte Spannleisten 26 feststehend und straff gespannt angeordnet. Die dem Transportband 18 zugewandte Oberseite des Bandes 24 ist mit Borsten 22 besetzt, die in der oben beschriebenen Art aufgrund ihrer weichelastischen Eigenschaften und ihrer Länge sowie des Abstandes des Bandes 24 von dem Transportband 18 von unten an dem fördernden unteren Trum des Transportbandes 18 anliegen.The conveyor belt 18 runs horizontally above the magazines 12 arranged one behind the other. The conveyor belt 18 extends over all the magazines 12 up to the feed gap of the office machine 16. The flat body of the pressing device is arranged between the upper edge of the magazines 12 and the lower conveying run of the conveyor belt 18 . In this exemplary embodiment, the flat body consists of a belt 24, which extends over the entire length of the lower conveying run of the conveyor belt 18. As can be seen in FIG. 3, the band 24 is arranged in a fixed and taut manner by means of clamping strips 26 attached to its edges. The upper side of the belt 24 facing the conveyor belt 18 is covered with bristles 22 which, in the manner described above, rest against the conveying lower run of the conveyor belt 18 from below due to their flexible properties and their length and the distance of the belt 24 from the conveyor belt 18.

Um das Eintreten der aus den verschiedenen Magazinen 12 zugeführten Bogen 10 zwischen das Band 24 und das Transportband 18 zu ermöglichen, weist das Band 24 über jedem Magazin 12 einen Schlitz 28 auf, der sich quer zur Transportrichtung über die Breite des Magazins 12 erstreckt.In order to allow the sheets 10 fed from the various magazines 12 to enter between the belt 24 and the conveyor belt 18, the belt 24 has a slot 28 above each magazine 12 which extends transversely to the transport direction extends across the width of the magazine 12.

Wird die Abzugsrolle 14 des jeweils ausgewählten Magazins 12 angesteuert, so schiebt sie den obersten Bogen 10 des Stapels nach oben aus diesem Magazin. Der Bogen 10 tritt durch den über diesem Magazin 12 angeordneten Schlitz 28 des Bandes 24 hindurch und gelangt zwischen das untere fördernde Trum des Transportbandes 18 und die auf dem Band 24 angeordneten Borsten 22. Durch die Borsten 22 des Bandes 24 wird der Bogen 10 von unten gegen das Transportband 18 gedrückt und von diesem kraftschlüssig mitgenommen, um am Ende des Transportbandes 18 an die Büromaschine 16 abgegeben zu werden. Die Borsten 22 halten den Bogen 10 über seine gesamte Fläche an dem Transportband 18 anliegend, um einen zuverlässigen Kraftschluß zwischen dem Bogen 10 und dem Transportband 18 zu gewährleisten. Die Abmessung der Schlitze 28 in Transportrichtung ist dabei wesentlich geringer als die Länge der Bogen 10, so daß die Bogen 10 auch beim Überqueren der Schlitze 28 nachfolgender Magazine 12 zuverlässig abgestützt werden. Gegebenenfalls kann an der in Förderrichtung liegenden Kante der Schlitze 28 noch eine Einlaufschräge ausgebildet sein, die das Eindringen der von unten aus dem Magazin 12 zugeführten Bogen 10 zwischen das Band 24 und das Transportband 18 begünstigt. Eine solche Einlaufschräge garantiert darüberhinaus auch, daß die vorlaufende Kante des Bogens 10 beim Überqueren der in Transportrichtung folgenden Schlitze 28 nicht nach unten aus dem Schlitz 28 herausgelenkt wird.If the take-off roller 14 of the respectively selected magazine 12 is activated, it pushes the top sheet 10 of the stack upwards out of this magazine. The sheet 10 passes through the slot 28 of the belt 24 arranged above this magazine 12 and passes between the lower conveying strand of the conveyor belt 18 and the bristles 22 arranged on the belt 24. The bristles 22 of the belt 24 make the sheet 10 from below pressed against the conveyor belt 18 and frictionally carried by it in order to be delivered to the office machine 16 at the end of the conveyor belt 18. The bristles 22 hold the sheet 10 in contact with the conveyor belt 18 over its entire surface in order to ensure reliable adhesion between the sheet 10 and the conveyor belt 18. The dimension of the slots 28 in the transport direction is substantially less than the length of the sheets 10, so that the sheets 10 are reliably supported even when crossing the slots 28 of subsequent magazines 12. If necessary, an inlet bevel can be formed on the edge of the slots 28 lying in the conveying direction, which promotes the penetration of the sheets 10 fed from below from the magazine 12 between the belt 24 and the conveyor belt 18. Such an inclined slope also guarantees that the leading edge of the sheet 10 is not deflected downward out of the slot 28 when crossing the slots 28 following in the transport direction.

In dieser Ausführungsform gewährleistet die Länge der Borsten 22 insbesondere auch den Ausgleich von Abstandsunterschieden zwischen dem Band 24 und dem unteren Trum des Transportbandes 18 aufgrund eines gewissen Durchhängens des Bandes 24.In this embodiment, the length of the bristles 22 in particular also ensures the compensation of differences in distance between the band 24 and the lower run of the Conveyor belt 18 due to some sagging of the belt 24.

In Figur 4 ist eine dritte Ausführungsform dargestellt.A third embodiment is shown in FIG.

In diesem Ausführungsbeispiel sind über dem horizontal laufenden Transportband 18 hintereinander mehrere als Papierschächte ausgebildete Magazine 12 mit jeweils Abzugsrollen 14 angeordnet. Die durch die Abzugsrollen 14 aus einem jeweils ausgewählten Magazin 12 abgezogenen Bogen 10 gelangen auf das fördernde obere Trum des Transportbandes 18 und werden von diesem zu der Büromaschine 16 transportiert.In this exemplary embodiment, a plurality of magazines 12 designed as paper chutes, each with take-off rollers 14, are arranged one behind the other over the horizontally running conveyor belt 18. The sheets 10 drawn off by the take-off rollers 14 from a respectively selected magazine 12 reach the conveying upper run of the conveyor belt 18 and are transported by the latter to the office machine 16.

Um die Bogen 10 auf dem Transportband 18 aufliegend zu halten, ist im Abstand über dem oberen Trum des Transportbandes 18 der flächige Körper der Andruckeinrichtung angeordnet. Dieser flächige Körper besteht in diesem Ausführungsbeispiel aus einer steifen Platte 20, die an ihrer Unterseite mit Borsten 22 besetzt ist, wie dies anhand des Ausführungsbeispiels der Figur 1 beschrieben ist. Um die Bogen 10 aus den verschiedenen Magazinen 1 zwischen die mit den Borsten 22 besetzte Platte 20 und das obere fördernde Trum des Transportbandes 18 einführen zu können, weist die Platte 20 jedem Magazin zugeordnet einen Schlitz 28 auf, wie dies in Verbindung mit dem Ausführungsbeipiel der Figur 2 beschrieben ist.In order to keep the sheets 10 lying on the conveyor belt 18, the flat body of the pressing device is arranged at a distance above the upper run of the conveyor belt 18. In this exemplary embodiment, this flat body consists of a rigid plate 20 which is covered with bristles 22 on its underside, as is described with reference to the exemplary embodiment in FIG. In order to be able to insert the sheets 10 from the various magazines 1 between the plate 20 covered with the bristles 22 and the upper conveying strand of the conveyor belt 18, the plate 20 has a slot 28 assigned to each magazine, as is shown in connection with the exemplary embodiment of FIG Figure 2 is described.

In Figur 5 ist eine vierte Ausführungsform dargestellt.A fourth embodiment is shown in FIG.

Diese Ausführungsform entspricht der Ausführungsform der Figur 2 insofern, als mehrere Magazine 12 mit hochkant stehendem Stapel von Bogen 10 unter dem horizontal umlaufenden Transportband 18 angeordnet sind. Um die Bogen 10 aus dem jeweils ausgewählten Magazin 12 nach oben zu dem Transportband 18 zu bringen, ist jedoch bei der Ausführungsform der Figur 5 nur eine einzige Abzugsrolle 14 vorgesehen. Diese Abzugsrolle 14 ist an einer Übergabeeinheit 30 angeordnet, die in Form einer Brücke das Transportband 18 übergreift und auf Führungsschienen 32 entlang dem Transportband 18 über den Magazinen 12 verfahrbar ist. Die Übergabeeinheit 30 wird gesteuert über das jeweils ausgewählte Magazin 12 gefahren, worauf die Abzugsrolle 14 nach unten gegen den Stapel der Bogen 10 dieses Magazins 12 in die in Figur 5 gezeigte Stellung geschwenkt wird, um den jeweils obersten Bogen 10 des Stapels aus dem Magazin 12 abzuziehen.This embodiment corresponds to the embodiment of FIG. 2 insofar as several magazines 12 with upright standing stack of sheets 10 are arranged under the horizontally rotating conveyor belt 18. In order to bring the sheets 10 from the selected magazine 12 upwards to the conveyor belt 18, however, only a single take-off roller 14 is provided in the embodiment of FIG. This take-off roller 14 is arranged on a transfer unit 30, which overlaps the conveyor belt 18 in the form of a bridge and can be moved on guide rails 32 along the conveyor belt 18 above the magazines 12. The transfer unit 30 is moved in a controlled manner over the respectively selected magazine 12, whereupon the take-off roller 14 is pivoted downward against the stack of sheets 10 of this magazine 12 into the position shown in FIG. 5, around the uppermost sheet 10 of the stack from the magazine 12 deduct.

In diesem Ausführungsbeispiel besteht der flächige Körper der Andruckeinrichtung aus einem flexiblen Band 34, das an seiner dem unteren transportierenden Trum des Transportbandes 18 zugewandten Oberfläche mit Borsten 22 in der oben beschriebenen Weise besetzt ist. Das eine Ende des Bandes 34 ist an der Übergabeeinheit 30 befestigt. Das Band 34 verläuft parallel zu dem unteren Trum des Transportbandes 18 und ist an dessen Ende über eine Umlenkwalze 36 nach unten geführt, wo es auf eine unter Federspannung stehende Trommel 38 aufgewickelt wird.In this exemplary embodiment, the flat body of the pressing device consists of a flexible belt 34, which is covered with bristles 22 in the manner described above on its surface facing the lower transporting strand of the transport belt 18. One end of the belt 34 is attached to the transfer unit 30. The belt 34 runs parallel to the lower run of the conveyor belt 18 and is guided downwards at its end via a deflection roller 36, where it is wound onto a drum 38 under spring tension.

Wird die Übergabeeinheit zu einem ausgewählten Magazin 12 in der Figur 5 nach links verfahren, so zieht die Übergabeeinheit 30 das Band 34 gegen die Federbelastung von der Trommel 38 ab. Wird die Übergabeeinheit 30 dagegen nach rechts verfahren, so wird die überschüssige Länge des Bandes 34 auf die Trommel 38 aufgewickelt. Die Federspannung der Trommel 38 gewährleistet dabei, daß das Band 34 stets straff gespannt gehalten wird und zwischen der Übergabeeinheit 30 und der Umlenkwalze 36 parallel zu dem fördernden unteren Trum des Transportbandes 18 in dem vorgegebenen Abstand zu diesem gespannt ist.If the transfer unit to a selected magazine 12 is moved to the left in FIG. 5, the transfer unit 30 pulls the band 34 off the drum 38 against the spring load. If, on the other hand, the transfer unit 30 is moved to the right, the excess length of the belt 34 is wound onto the drum 38. The spring tension of the drum 38 ensures that the belt 34 is always kept taut and is tensioned between the transfer unit 30 and the deflection roller 36 parallel to the conveying lower run of the conveyor belt 18 at the predetermined distance therefrom.

Der durch die Übergabeeinheit 30 von dem jeweils ausgewählten Magazin 12 abgezogene Bogen 10 gelangt zwischen das Ende des Bandes 34 und das untere Trum des Transportbandes 18 und wird von dem Band 34 über den gesamten Transportweg bis zur Abgabe des Bogens 10 an dem Transportband 18 anliegend gehalten. In dieser Ausführungsform sind auch bei mehreren Magazinen 12 keine Schlitze 28 in dem Band 34 erforderlich.The sheet 10 pulled by the transfer unit 30 from the respectively selected magazine 12 passes between the end of the belt 34 and the lower run of the conveyor belt 18 and is held by the belt 34 over the entire transport path until the sheet 10 is delivered to the conveyor belt 18 . In this embodiment, no slots 28 are required in the band 34 even with a plurality of magazines 12.

In Figur 6 ist eine fünfte Ausführungsform dargestellt.A fifth embodiment is shown in FIG.

In dieser Ausführungsform ist die Transportvorrichtung in Verbindung mit einem Sortierer eingesetzt. Die von einer Büromaschine, z.B. einem Drucker oder einem Kopierer, kommenden Bogen 10 werden oben zwischen das nach unten laufende fördernde Trum des vertikal umlaufenden endlosen Transportbandes 18 und den flächigen Körper der Andruckeinrichtung geführt. Das Transportband 18 läuft vor vertikal übereinander angeordneten Ablagefächern 40 entlang. Jedem Ablagefach 40 ist eine Weiche 42 zugeordnet, die hinter das abwärts laufende Trum des Transportbandes 18 aus dem Förderweg der Bogen 10 schwenkbar ist. Gesteuert können die Weichen 42 in eine Betriebsstellung geschwenkt werden, in welcher sie zwischen die Riemen des Transportbandes 18 in die Bewegungsbahn der Bogen 10 greifen, um diese in das zugehörige Ablagefach 40 abzulenken. Diese Stellung ist in Figur 6 für die mittlere Weiche 42 gezeigt.In this embodiment, the transport device is used in connection with a sorter. The sheets 10 coming from an office machine, for example a printer or a copier, are guided at the top between the downward conveying run of the vertically rotating endless conveyor belt 18 and the flat body of the pressing device. The conveyor belt 18 runs in front of storage compartments 40 arranged vertically one above the other. Each storage compartment 40 is assigned a switch 42 which can be pivoted out of the conveying path of the sheets 10 behind the downward run of the conveyor belt 18. Controlled, the switches 42 can be pivoted into an operating position in which they reach between the belts of the conveyor belt 18 into the path of movement of the sheets 10 in order to deflect them into the associated storage compartment 40. This position is shown in Figure 6 for the middle switch 42.

Der flächige Körper der Andruckeinrichtung besteht in diesem Ausführungsbeispiel aus einem fest eingespannten Band 24, das auf der dem Transportband 18 zugewandten Seite mit Borsten 22 besetzt ist, wie dies in Verbindung mit dem Ausführungsbeispiel der Figuren 2 und 3 beschrieben ist. Das Band 24 weist vor jedem Ablagefach 40 einen quer zur Transportrichtung verlaufenden Schlitz 28 auf, durch welchen die von der Weiche 42 abgelenkten Bogen 10 hindurchtreten und in das zugehörige Ablagefach 40 gelenkt werden können.In this exemplary embodiment, the flat body of the pressure device consists of a firmly clamped belt 24, which is covered with bristles 22 on the side facing the conveyor belt 18, as described in connection with the exemplary embodiment in FIGS. 2 and 3. The belt 24 has in front of each storage compartment 40 a slot 28 running transversely to the transport direction, through which the sheets 10 deflected by the switch 42 pass and can be directed into the associated storage compartment 40.

Aus den vorstehenden Ausführungsbeispielen wird deutlich, daß die erfindungsgemäße Andruckeinrichtung bei vertikal und horizontal umlaufenden Transportbändern eingesetzt werden kann, wobei das fördernde Trum das nach oben laufende oder das nach unten laufende Trum des vertikalen Transportbandes und ebenso das obere oder das untere Trum des horizontal umlaufenden Transportbandes sein kann. Die Andruckeinrichtung kann dabei in allen Fällen für die Zuführung von Bogen aus einem oder mehreren Magazinen und für die Ablage von Bogen in einem oder mehreren Ablagefächern eingesetzt werden. Ebenso kann die Andruckeinrichtung bei allen sonstigen Transportvorgängen von Bogen mittels umlaufenden Transportbändern verwendet werden. In welcher Form der flächige Körper der Andruckeinrichtung und die Andruckelemente ausgebildet sind, bestimmt sich nach den speziellen Anforderungen des Anwendungsfalles.From the above embodiments it is clear that the pressure device according to the invention can be used with vertically and horizontally rotating conveyor belts, the conveying strand being the upward or downward strand of the vertical conveyor belt and also the upper or lower strand of the horizontally rotating conveyor belt can be. The pressure device can be used in all cases for feeding sheets from one or more magazines and for storing sheets in one or more storage compartments. Likewise, the pressure device can be used in all other sheet transport operations by means of circulating conveyor belts. The form in which the flat body of the pressure device and the pressure elements are designed is determined by the special requirements of the application.

Claims (14)

Vorrichtung zum Transportieren von vereinzelten Bogen eines blattförmigen Aufzeichnungsträgers in Büromaschinen, mit einem endlos umlaufenden Transportband, das die Bogen kraftschlüssig mitnimmt, und mit einer Andruckeinrichtung, die die Bogen in kraftschlüssiger Anlage an dem Transportband hält, dadurch gekennzeichnet, daß die Andruckeinrichtung wenigstens einen zur Fläche des fördernden Trums des Transportbandes (18) parallelen flächigen Körper (20, 24, 34) aufweist, der in einem eine Berührung des Transportbandes (18) vermeidenden Abstand von diesem angeordnet ist, und daß der Körper (20, 24, 34) mit dünnen, weichelastischen Andruckelementen (22) besetzt ist, die gegen das Transportband (18) gerichtet sind, deren Länge größer als der Abstand zwischen dem Körper (20, 24, 34) und dem Transportband (18) ist, und deren gegenseitiger Abstand kleiner als die linearen Abmessungen der Bogen (10) ist.Device for transporting individual sheets of a sheet-shaped record carrier in office machines, with an endlessly rotating conveyor belt, which takes the sheets non-positively, and with a pressing device, which holds the sheets in a non-positive contact with the conveyor belt, characterized in that the pressing device has at least one to the surface of the conveying strand of the conveyor belt (18) has parallel flat bodies (20, 24, 34) which are arranged at a distance from the conveyor belt (18) avoiding contact therewith, and that the body (20, 24, 34) is thin , Soft elastic pressure elements (22) are occupied, which are directed against the conveyor belt (18), the length of which is greater than the distance between the body (20, 24, 34) and the conveyor belt (18), and the mutual distance of which is smaller than that linear dimensions of the arc (10). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Körper (20, 24, 34) der Andruckeinrichtung relativ zu dem Transportband (18) festgehalten ist.Device according to claim 1, characterized in that the body (20, 24, 34) of the pressure device is held relative to the conveyor belt (18). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Körper der Andruckeinrichtung eine feststehende Platte (20) ist.Device according to claim 2, characterized in that the body of the pressure device is a fixed plate (20). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Körper der Andruckeinrichtung ein gespannt festgelegtes Band (24) ist.Apparatus according to claim 2, characterized in that the body of the pressure device is a tensioned band (24). Vorrichtung nach wenigstens einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß zur Zuführung der Bogen (10) aus mehreren Magazinen (12) oder zur Abgabe der Bogen (10) an mehrere Ablagefächer (40), die längs des Transportbandes (18) angeordnet sind, der Körper (20, 24) quer zur Bewegungsrichtung des Transportbandes (18) verlaufende Schlitze (28) aufweist, deren Lage den Austrittspositionen der Magazine (12) bzw. den Eintrittspositionen der Ablagefächer (40) entspricht und deren Breite in Querrichtung zumindest gleich der Breite der Bogen (10) ist.Device according to at least one of claims 3 or 4, characterized in that for feeding the sheets (10) from a plurality of magazines (12) or for delivering the sheets (10) to a plurality of storage compartments (40) arranged along the conveyor belt (18) the body (20, 24) has slots (28) running transversely to the direction of movement of the conveyor belt (18), the position of which corresponds to the exit positions of the magazines (12) or the entry positions of the storage compartments (40) and their width in the transverse direction is at least the same the width of the bow (10). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß zur Zuführung der Bogen (10) aus mehreren Magazinen (12) oder zur Abgabe der Bogen (10) an mehrere Ablagefächer (40), die längs des Transportbandes (18) angeordnet sind, mittels einer längs des Transportbandes (18) vor den Magazinen (12) bzw. Ablagefächern (40) verfahrbaren Übergabeeinheit (30) der Körper der Andruckeinrichtung ein flexibles Band (34) ist, dessen eines Ende an der Übergabeeinheit (30) festgelegt ist und das durch eine an seinem zweiten Ende angreifende Federkraft parallel zum Transportband (18) gespannt gehalten ist.Apparatus according to claim 2, characterized in that for feeding the sheets (10) from a plurality of magazines (12) or for delivering the sheets (10) to a plurality of storage compartments (40) which are arranged along the conveyor belt (18) by means of a lengthwise of the conveyor belt (18) in front of the magazines (12) or storage compartments (40) movable transfer unit (30) the body of the pressure device is a flexible belt (34), one end of which is fixed to the transfer unit (30) and by one its second end engaging spring force is held parallel to the conveyor belt (18). Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Band (34) über eine am Ende des Transportbandes (18) angeordnete Umlenkwalze (36) geführt ist.Apparatus according to claim 6, characterized in that the belt (34) is guided over a deflection roller (36) arranged at the end of the conveyor belt (18). Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß das zweite Ende des Bandes (34) auf eine federbelastete Trommel (38) aufgewickelt ist.Apparatus according to claim 6 or 7, characterized in that the second end of the band (34) is wound on a spring-loaded drum (38). Vorrichtung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Andruckelemente Borsten (22) sind.Device according to at least one of claims 1 to 8, characterized in that the pressure elements are bristles (22). Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Borsten (22) aus Kunststoff bestehen.Device according to claim 9, characterized in that the bristles (22) consist of plastic. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Andruckelemente aus Kunststoff bestehende Lappen sind.Device according to at least one of claims 1 to 8, characterized in that the pressure elements are made of plastic. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Breite des Körpers (20, 24, 34) der Andruckeinrichtung wenigstens gleich der Breite des Transportbandes (18) ist.Device according to at least one of claims 1 to 11, characterized in that the width of the body (20, 24, 34) of the pressure device is at least equal to the width of the conveyor belt (18). Vorrichtung nach wenigstns einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Andruckelemente (22) über die gesamte Breite des Transportbandes (18) gleichmäßig verteilt an dem Körper (20, 24, 34) der Andruckeinrichtung angeordnet sind.Device according to at least one of claims 1 to 12, characterized in that the pressure elements (22) are arranged uniformly distributed over the entire width of the conveyor belt (18) on the body (20, 24, 34) of the pressure device. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Andruckelemente (22) in Streifen an dem Körper (20, 24, 34) angeordnet sind, die in Längsrichtung des Transportbandes (18) verlaufen und deren Querabstand kleiner als die Querabmessung der Bogen (10) ist.Device according to at least one of claims 1 to 12, characterized in that the pressure elements (22) are arranged in strips on the body (20, 24, 34) which run in the longitudinal direction of the conveyor belt (18) and whose transverse distance is smaller than the transverse dimension the bow (10) is.
EP19910116004 1990-10-19 1991-09-20 Device for handling sheets in business machines Withdrawn EP0484663A3 (en)

Applications Claiming Priority (2)

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DE4033237 1990-10-19
DE4033237A DE4033237A1 (en) 1990-10-19 1990-10-19 DEVICE FOR TRANSPORTING BOWS IN OFFICE MACHINES

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EP0484663A2 true EP0484663A2 (en) 1992-05-13
EP0484663A3 EP0484663A3 (en) 1993-02-24

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JPH04246041A (en) 1992-09-02
DE4033237A1 (en) 1992-04-23
EP0484663A3 (en) 1993-02-24
US5192066A (en) 1993-03-09

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