EP0394240A1 - STACKING TRAY FOR SHEET-SHAPED RECORD CARRIERS IN A PRINTING DEVICE. - Google Patents
STACKING TRAY FOR SHEET-SHAPED RECORD CARRIERS IN A PRINTING DEVICE.Info
- Publication number
- EP0394240A1 EP0394240A1 EP19880904912 EP88904912A EP0394240A1 EP 0394240 A1 EP0394240 A1 EP 0394240A1 EP 19880904912 EP19880904912 EP 19880904912 EP 88904912 A EP88904912 A EP 88904912A EP 0394240 A1 EP0394240 A1 EP 0394240A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chain
- stacking compartment
- compartment
- guide rails
- stacking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000969 carrier Substances 0.000 title claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
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
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
- B65H31/10—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another and applied at the top of the 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
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/14—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/422—Handling piles, sets or stacks of articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
- B65H2403/50—Driving mechanisms
- B65H2403/54—Driving mechanisms other
- B65H2403/544—Driving mechanisms other involving rolling up - unrolling of transmission element, e.g. winch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/21—Industrial-size printers, e.g. rotary printing press
Definitions
- the invention relates to a stacking compartment for sheet-like recording media in a printing device with level control of the stack surface according to the preamble of the main claim.
- Height-adjustable stacking compartments for sheet-like recording media are known as such in a large number of applications. They can be used in the form of input compartments, in which the stacked record carriers are detached from the stack sheet by sheet with the aid of separating or removal devices and moved in the direction of a transport path of the printing device. In many cases, such separation devices are not designed to be pivotable, so that the stacking compartment has to perform a lifting movement in order to maintain the necessary frictional contact of the separation device with the stack surface as the stack height decreases.
- Such a height-adjustable stacking compartment for sheet-like recording media can, however, also be an output compartment in which printed recording media, arranged in a stack, are placed one after the other. It may be the case that the stack surface has to be continuously adapted to the position of the transport path in the output station in order to ensure proper storage of the recording media. However, it may also be the case that the incoming recording media are aligned in an oem stacking compartment by feed devices which are in frictional contact with the stacking surface. In this case, too, continuous level control of the stack of recording streams is required. Since such applications are by no means unusual, a number of solutions for level control of a recording medium stack have also been known to the person skilled in the art for a long time.
- spindle drives have been used for this purpose, which due to their pitch have the advantage of a small stroke movement with a relatively large rotary movement.
- a disadvantage of such spindle drives is the relatively high design effort associated with corresponding costs. The same applies to transmissions that have become known in these applications, in which a rotating pinion meshes with a toothed rack.
- Rope or chain systems that are attached to the vertically guided stacking compartment and are pulled or rotated by a drive motor are cheaper and therefore relatively frequently used in order to vertically adjust the stacking compartment in the desired manner.
- stacking compartment should preferably only be guided from one wall side in order to gain the greatest possible design freedom, for example also in the arrangement of a plurality of such stackers.
- the invention is therefore based on the object of providing a stacking compartment for sheet-like recording media of the type mentioned at the outset which, despite a high load to be absorbed, is securely guided in the form of an extensive stack of recording media during its vertical movement and can be produced inexpensively.
- this object is achieved according to the invention with the features described in the characterizing part of the main claim.
- the solution according to the invention first of all provides that guide rails are used as frame parts which are favorable in relation to the ratio of their mass to the rigidity. If one forms such guide rails, as is preferably aimed for, as extruded profiles, there are possibilities of cross-sectional design which allow a particularly high rigidity with low weight. Nevertheless, inexpensive solutions can be achieved due to the manufacturing process.
- the height-adjustable part of a stacking compartment designed according to the invention is formed from the end wall and laterally from the longitudinal side of the projecting shelf supports. Only the end wall can be displaced vertically on its narrow sides in the guide rails and is preferably fixed twice in each case with a sufficient vertical distance in order to absorb the high torque of the stack of recording media supported on one side. Finally, the form-fitting guide for the vertical adjustment of the end wall forms a chain axially inserted in the guide rails and braced there in connection with a driven pinion.
- FIG. 1 shows a schematic illustration of a stacking compartment designed according to the invention in a three-dimensional exploded view, which for reasons of clarity shows only the most important design features
- FIG. 2 shows a detailed view of one of the guide rails serving as a frame for the stacking compartment, from which it can be seen how a chain, on which the end wall of the stacking compartment itself pulls up, is arranged and
- FIG 3 shows, in a further view, in addition to a cross section through one of the guide rails, the schematically illustrated drive for the vertical movement of the stacking compartment.
- a stacking compartment for sheet-like recording medium 1 is shown in an exploded view. It is therefore also not shown whether this stacking tray should be used as an input or output tray for sheet-shaped recording media, because this purpose is not important in itself. It is only assumed that this stacking compartment must be adjustable in its vertical position in order, for example, to reach a certain level of the stacking surface of the sheet-like form gene to keep record carrier 1 constant, although the stack height is constantly changing.
- an end wall 2 of the stacking compartment forms, together with compartment supports 3, which are rigidly projecting vertically on one of its side walls, the height-adjustable part of the stacking compartment.
- compartment supports 3 which are rigidly projecting vertically on one of its side walls, the height-adjustable part of the stacking compartment.
- guide rails 4 are provided, which are made as extruded profiles. This manufacturing process enables a liberal design of the cross-sectional shape, which is optimized here to achieve high rigidity with the lowest possible weight.
- Each of these guide rails 4 thus has a base 5 of essentially rectangular cross section.
- a supporting body 6 with an approximately trapezoidal cross-section sits on this base.
- In this support body 6 are two, in the direction of
- the first guide groove 7 has a rectangular cross section and opens toward the side of the guide rail 4 facing away from the base 5.
- the second guide groove 8 is arranged in the support body 6 rotated by 90 °, it opens in a direction parallel to the base 5 the guide rails 4 lies.
- the first guide groove 7 serves for the vertical guidance of the end wall 2 of the stacking compartment which is designed as a slide.
- This end wall therefore has bearing pins 9 and 10 protruding at right angles from its narrow sides with ball bearings 11 arranged thereon.
- a sufficient radial distance between the first pairs of trunnions 9 and 10 ensures reliable guidance of the end wall 2 of the stacking compartment in the first guide grooves 7, although the attached to the end wall 2 and the stack of recording media carrying tray 3 exert a corresponding torque on these ball bearings 11.
- FIG 1 also indicates that a chain 12 is inserted into the second guide groove 8 of the guide rails 4.
- the cross-sectional shape of the second guide groove 8 is adapted to this chain cross-section and the overall function of the guide rails with the proviso that all possibilities are used to make the guide rail 4 torsion-resistant by designing its cross-sectional shape.
- FIG. 2 shows a partial section through one of the guide rails 4 in order to further illustrate the arrangement of the chain 12 in the second guide groove 8.
- the chain 12 is inserted into the second guide groove 8. It is fixed at the upper end of the guide rail 4 with an axis 13 which is inserted into the vertically projecting fastening eyes 14 of the guide rail 4.
- the chain is clamped by means of a tension spring 15. It is thus arranged in the guide groove 8 in a stationary manner under prestress.
- This chain forms an element of the gear unit with which the stacking compartment is adjusted in height.
- FIG 3 shows further elements of this gear arrangement.
- a sprocket 16 is in engagement with the chain 12. This sprocket 16 is coupled to a sprocket 17. This is shown in FIG 3 in cooperation with another
- Chain 18 shown which in turn is driven by a differential motor 20 via a further sprocket 19.
- In 3 shows schematically only one side of the mounting of the end wall 2. The opposite side is, however, mirror-symmetrical, apart from the fact that the compensating motor 20 is of course only provided once.
- the sprocket 17 is rigidly arranged together with the pinion 16 on a lifting shaft 21 which rotates in the end wall 2 and whose right end, shown in FIG. 3, forms one of the first bearing journals 9.
- a pinion 16 is rigidly arranged on this shaft, which is in operative connection with a further chain 12 clamped in the opposite guide rail 4.
- the compensating motor is - for reasons of clarity in the schematic representation of FIG 3 not shown - mechanically connected to the height-adjustable part of the stacking compartment, preferably fixed on the carriage 2. It is designed as a clocked gear motor that inhibits itself. This ensures the current vertical position of the stacking compartment.
- a sensor 22 is provided assigned to the surface of the stack of sheet-shaped recording media 1, as is shown schematically in FIG. This scans the vertical position of the stack surface. This sensor 22 is thus used as a level switch, it emits a signal with a tolerance of approximately 10 sheet-shaped recording media 1, which is fed to the compensating motor 20 as a control clock signal for an opposite compensating movement.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pile Receivers (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Un compartiment pour piles de feuilles d'impression dans une imprimante est ajustable en hauteur, ce qui permet d'ajuster le niveau de la surface de la pile de feuilles. Une solution économique est recherchée pour assurer un guidage sûr du mouvement vertical malgré des charges importantes. Le cadre fixe du compartiment est formé de rails de guidage (4) situés à ras d'une paroi frontale (2) du compartiment. La paroi frontale (2) du compartiment forme un chariot auquel sont assujettis des supports (3) qui font latéralement saillie. Le chariot (2) est guidé dans les deux rails de guidage (4) de manière à résister aux torsions. Afin d'ajuster le chariot (2) en hauteur, une transmission par chaîne (12, 16 à 21) comprend une chaîne (12) fixée dans chaque rail de guidage (4). On peut utiliser ce compartiment pour feuilles dans des imprimantes comme compartiment d'introduction ou de sortie feuille à feuille.A compartment for stacks of print sheets in a printer is adjustable in height, allowing the level of the stack of sheets to be adjusted. An economical solution is sought to ensure safe guiding of the vertical movement despite heavy loads. The fixed frame of the compartment is formed of guide rails (4) located flush with a front wall (2) of the compartment. The front wall (2) of the compartment forms a carriage to which supports (3) are attached which protrude laterally. The carriage (2) is guided in the two guide rails (4) so as to resist torsion. In order to adjust the carriage (2) in height, a chain transmission (12, 16 to 21) comprises a chain (12) fixed in each guide rail (4). This sheet compartment can be used in printers as a sheet feed or output tray.
Description
Stapelfach für blattförmige Aufzeichnungsträger in einer Druckeinrichtung Stacking compartment for sheet-like recording media in a printing device
Die Erfindung bezieht sich auf ein Stapelfach für blattförmige Aufzeichnungsträger in einer Druckeinrichtung mit Niveauregelung der Stapeloberflache gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a stacking compartment for sheet-like recording media in a printing device with level control of the stack surface according to the preamble of the main claim.
Höhenverstellbare Stapelfächer für blattförmige Aufzeichnungsträger sind als solche in einer Vielzahl von Anwendungsfällen bekannt. Sie können in der Form von Eingabefächern eingesetzt sein, bei denen die gestapelten Aufzeichnungsträger Blatt für Blatt mit Hilfe von Vereinzelungsoder Abzugseinrichtungen vom Stapel abgelöst und in Richtung auf eine Transportbahn der Druckeinrichtung bewegt werden. Vielfach sind derartige Vereinzelungseinrichtungen nicht verschwenkbar ausgebildet, so daß das Stapelfach eine Hubbewegung ausführen muß, um bei abnehmender Stapelhöhe den notwendigen Reibkontakt der Vereinzelungseinrichtung mit der Stapeloberfläche aufrechtzuerhalten.Height-adjustable stacking compartments for sheet-like recording media are known as such in a large number of applications. They can be used in the form of input compartments, in which the stacked record carriers are detached from the stack sheet by sheet with the aid of separating or removal devices and moved in the direction of a transport path of the printing device. In many cases, such separation devices are not designed to be pivotable, so that the stacking compartment has to perform a lifting movement in order to maintain the necessary frictional contact of the separation device with the stack surface as the stack height decreases.
Ein solches, in der Höhe verstellbares Stapelfach für blattförmige Aufzeichnungsträger kann aber auch ein Ausgabefach sein, in dem bedruckte Aufzeichnungsträger, zu einem Stapel geordnet, nacheinander abgelegt werden. Dabei kann es sein, daß die Stapeloberfläche kontinuierlich der Position der Transportbahn in der Ausgabestation angepaßt werden muß, um eine ordnungsgemäße Ablage der Aufzeichnungsträger zu gewährleisten. Es kann aber auch sein, daß die ankommenden Aufzeichnungsträger durch Vorschubeinrichtungen, die mit der Stapeloberfläche in Reibkontakt stehen, in oem Stapelfach ausgerichtet werden. Auch in diesem Fall ist eine kontinuierliche Niveauregelung oes Stapels von Aufzeichnunosträoern erforderlich. Da derartige Anwendungsfälle durchaus nicht ungewöhnlich sind, sind dem Fachmann auch eine Reihe von Lösungen für eine Niveauregelung eines Aufzeichnungsträgerstapeis seit langem bekannt. Man hat beispielsweise dafür Spindelantriebe eingesetzt, die aufgrund ihrer Steigung den Vorteil einer geringen Hubbewegung bei einer relativ großen Drehbewegung aufweisen. Nachteilig bei solchen Spindelantrieben ist, wie bei ebenso bekannten pneumatisch oder hydraulisch gesteuerten Stapelfächern, der relativ hohe, mit entsprechenden Kosten verbundene konstruktive Aufwand. Ähnliches gilt auch für in diesen Anwendungsfällen bekanntgewordene Getriebe, bei denen ein rotatorisch bewegtes Ritzel mit einer Zahnstange kämmt.Such a height-adjustable stacking compartment for sheet-like recording media can, however, also be an output compartment in which printed recording media, arranged in a stack, are placed one after the other. It may be the case that the stack surface has to be continuously adapted to the position of the transport path in the output station in order to ensure proper storage of the recording media. However, it may also be the case that the incoming recording media are aligned in an oem stacking compartment by feed devices which are in frictional contact with the stacking surface. In this case, too, continuous level control of the stack of recording streams is required. Since such applications are by no means unusual, a number of solutions for level control of a recording medium stack have also been known to the person skilled in the art for a long time. For example, spindle drives have been used for this purpose, which due to their pitch have the advantage of a small stroke movement with a relatively large rotary movement. A disadvantage of such spindle drives, as in the case of pneumatically or hydraulically controlled stacking compartments which are also known, is the relatively high design effort associated with corresponding costs. The same applies to transmissions that have become known in these applications, in which a rotating pinion meshes with a toothed rack.
Kostengünstiger und deshalb relativ häufig verwendet sind Seilzug- oder Kettensysteme, die an das vertikal geführte Stapelfach angehängt sind und durch einen Antriebsmotor gezogen bzw. gedreht werden, um das Stapelfach in der gewünschten Weise vertikal nachzustellen.Rope or chain systems that are attached to the vertically guided stacking compartment and are pulled or rotated by a drive motor are cheaper and therefore relatively frequently used in order to vertically adjust the stacking compartment in the desired manner.
All diese bekannten Systeme mögen für bestimmte Anwendungsfälle Vorteile haben, befriedigen jedoch nicht als kostengünstige und dennoch betriebssichere Lösung bei einem Stapelfach für blattförmige Aufzeichnungsträger, das bei einem entsprechenden Stapelvermögen relativ schwer ist.All of these known systems may have advantages for certain applications, but are unsatisfactory as an inexpensive, yet reliable solution for a stacking compartment for sheet-like recording media, which is relatively difficult with a corresponding stacking capacity.
Dies gilt insbesondere um so mehr, wenn das Stapelfach vorzugsweise lediglich von einer Wandseite her geführt sein soll, um möglichst große konstruktive Freiheit, beispielsweise auch in der Anordnung mehrerer derartiger Stapelfäeher untereinander zu gewinnen.This is all the more true if the stacking compartment should preferably only be guided from one wall side in order to gain the greatest possible design freedom, for example also in the arrangement of a plurality of such stackers.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Stapelfach für blattförmige Aufzeichnungsträger der eingangs genannten Art zu schaffen, das trotz einer hohen aufzunehmenden Last in Form eines umfangreichen Aufzeichnungsträgerstapels bei seiner Vertikalbewegung sicher geführt ist und trctzαem kostengünstig hergestellt werden kann. Bei einem Stapelfach der eingangs genannten Art wird diese Aufgabe erfindungsgemäß mit den im Kennzeichen des Hauptanspruchs beschriebenen Merkmalen gelöst.The invention is therefore based on the object of providing a stacking compartment for sheet-like recording media of the type mentioned at the outset which, despite a high load to be absorbed, is securely guided in the form of an extensive stack of recording media during its vertical movement and can be produced inexpensively. In a stacking compartment of the type mentioned, this object is achieved according to the invention with the features described in the characterizing part of the main claim.
Die erfindungsgemäße Lösung sieht zunächst einmal vor, daß als Rahmenteile Führungsschienen verwendet werden, die in bezug auf das Verhältnis ihrer Masse zu der Steifigkeit günstig liegen. Wenn man derartige Führungsschienen, wie vorzugsweise angestrebt, als Strangpreßprofile ausbildet, bestehen Möglichkeiten der Querschnittsgestaltung, die eine besonders hohe Steifigkeit bei geringem Gewicht zuläßt. Dennoch sind aufgrund des Herstellungsverfahrens kostengünstige Lösungen erreichbar.The solution according to the invention first of all provides that guide rails are used as frame parts which are favorable in relation to the ratio of their mass to the rigidity. If one forms such guide rails, as is preferably aimed for, as extruded profiles, there are possibilities of cross-sectional design which allow a particularly high rigidity with low weight. Nevertheless, inexpensive solutions can be achieved due to the manufacturing process.
Das höhenverstellbare Teil eines erfindungsgemäß ausgebildeten Stapelfaches ist aus der Stirnwand und seitlich aus dessen Längsseite vorspringenden Fachbodenträgern gebildet. Lediglich die Stirnwand ist an ihren Schmalseiten in den Führungsschienen vertikal verschiebbar und vorzugsweise jeweils zweifach mit einem ausreichenden vertikalen Abstand festgelegt, um das hohe Drehmoment des einseitig unterstützten Aufzeichnungsträgerstapels aufzufangen. Die formschlüssige Führung für die vertikale Verstellung der Stirnwand schließlich bildet eine axial in die Führungsschienen eingelegte und dort verspannte Kette in Verbindung mit einem angetriebenen Ritzel.The height-adjustable part of a stacking compartment designed according to the invention is formed from the end wall and laterally from the longitudinal side of the projecting shelf supports. Only the end wall can be displaced vertically on its narrow sides in the guide rails and is preferably fixed twice in each case with a sufficient vertical distance in order to absorb the high torque of the stack of recording media supported on one side. Finally, the form-fitting guide for the vertical adjustment of the end wall forms a chain axially inserted in the guide rails and braced there in connection with a driven pinion.
Derartige Ketten werden in einer Vielzahl von Anwendungsfällen benötigt und sind daher kostengünstige Massenprodukte. Dennoch ist die in der Führungsschiene aufgespannte Kette funktioneil einer Zahnstange vergleichbar. Sie ist auch bei einer hohen Standzeit sehr betriebssicher, zumal hier die Kettenglieder immert gestreckt bleiben. Damit wird deutlich, daß gerade die Kombination einer kostengünstig herstellbaren Kette als preiswertes Getriebeelement mit Führungsschienen, deren Querschnittsform aufgrund des Herstellungsverfahrens optimal an den gegebenen Anwendungsfall anpaßbar ist, eines der wesentlichen Merkmale der Erfindung kennzeichnet. Mit der erfindungsgemäßen Verbindung beider Elemente ist eine technisch einwandfreie, betriebssichere und dennoch kostengünstige Lösung auch für hoch beanspruchte Stapelfächer trotz einseitiger Lagerung erzielbar. Weitere Vorteile, insbesondere auch von in Unteransprüchen gekennzeichneten Weiterbildungen der Erfindung sind mit ihren Einzelheiten der Beschreibung eines Ausführungsbeispieles zu entnehmen.Such chains are required in a variety of applications and are therefore inexpensive mass products. Nevertheless, the chain spanned in the guide rail is functionally comparable to a rack. It is very reliable even with a long service life, especially since the chain links are always stretched here. This makes it clear that it is precisely the combination of an inexpensive chain that can be produced as an inexpensive gear element with guide rails, whose cross-sectional shape is optimally suited to the given application due to the manufacturing process is customizable, features one of the essential features of the invention. With the connection of the two elements according to the invention, a technically flawless, reliable but nevertheless inexpensive solution can be achieved even for highly stressed stacking compartments despite one-sided storage. Further advantages, in particular also of refinements of the invention characterized in the subclaims, can be found with their details in the description of an exemplary embodiment.
Ein derartiges Ausführungsbeispiel wird im folgenden anhand der Zeichnung beschrieben. Dabei zeigt:Such an embodiment is described below with reference to the drawing. It shows:
FIG 1 eine schematische Darstellung eines erfindungsgemäß ausgebildeten Stapelfaches in einer dreidimensionalen Explosionsdarstellung, die aus Gründen der Übersichtlichkeit nur die wesentlichsten Konstruktionsmerkmale zeigt,1 shows a schematic illustration of a stacking compartment designed according to the invention in a three-dimensional exploded view, which for reasons of clarity shows only the most important design features,
in FIG 2 ist eine Detailansicht einer der als Rahmen für das Stapelfach dienenden Führungsschienen gezeigt, aus der hervorgeht, wie darin eine Kette, an der sich die Stirnwand des Stapelfaches selbst hochzieht, angeordnet ist und2 shows a detailed view of one of the guide rails serving as a frame for the stacking compartment, from which it can be seen how a chain, on which the end wall of the stacking compartment itself pulls up, is arranged and
FIG 3 in einer weiteren Ansicht neben einem Querschnitt durch eine der Führungsschienen den schematisch dargestellten Antrieb für die Vertikalbewegung des Stapelfaches.3 shows, in a further view, in addition to a cross section through one of the guide rails, the schematically illustrated drive for the vertical movement of the stacking compartment.
In FIG 1 ist aus Gründen der Übersichtlichkeit auf seine wesentlichen Merkmale reduziert, ein Stapelfach für blattförmige Aufzeichnungsträger 1 in einer Explosionsdarstellung gezeigt. Es ist deshalb auch nicht dargestellt, ob dieses Stapelfach als Ein oder Ausgabefach für blattförmige Aufzeichnungsträger verwendet werden soll, denn auf diesen Bestimmungszweck kommt es an sich nicht an. Es wird lediglich davon ausgegangen, daß dieses Stapelfach in seiner vertikalen Position verstellbar sein muß, um beispielsweise ein bestimmtes Niveau der Stapeloberfläche der blettförmi gen Aufzeichnungstrager 1 konstant zu halten, obwohl sich die Stapelhöhe laufend verändert.1 is reduced to its essential features for reasons of clarity, a stacking compartment for sheet-like recording medium 1 is shown in an exploded view. It is therefore also not shown whether this stacking tray should be used as an input or output tray for sheet-shaped recording media, because this purpose is not important in itself. It is only assumed that this stacking compartment must be adjustable in its vertical position in order, for example, to reach a certain level of the stacking surface of the sheet-like form gene to keep record carrier 1 constant, although the stack height is constantly changing.
Dazu muß nicht das gesamte Stapelfach einschließlich aller Wandflächen höhenverstellbar sein. Im vorliegenden Ausführungsbeispiel bildet eine Stirnwand 2 des Stapelfaches zusammen mit Fachträgern 3, die vertikal vorspringend an einer seiner Seitenwände starr befestigt sind, den höhenverstellbareπ Teil des Stapelfaches. Als Rahmen, in dem dieser höhenverstellbare Teil des Stapelfaches geführt ist, sind Führungsschienen 4 vorgesehen, die als Strangpreßprofile hergestellt sind. Dieses Herstellungsverfahren ermöglicht eine freizügige Gestaltung der Querschnittsform, die hier darauf optimiert ist, bei möglichst geringem Gewicht eine hohe Steifigkeit zu erzielen.It is not necessary for the entire stacking compartment, including all wall surfaces, to be adjustable in height. In the present exemplary embodiment, an end wall 2 of the stacking compartment forms, together with compartment supports 3, which are rigidly projecting vertically on one of its side walls, the height-adjustable part of the stacking compartment. As a frame, in which this height-adjustable part of the stacking compartment is guided, guide rails 4 are provided, which are made as extruded profiles. This manufacturing process enables a liberal design of the cross-sectional shape, which is optimized here to achieve high rigidity with the lowest possible weight.
So weist jede dieser Führungsschienen 4 eine Basis 5 von im wesentlichen rechteckigem Querschnitt auf. Auf dieser Basis sitzt ein Tragkörper 6 mit etwa trapezförmigem Querschnitt auf. In diesen Tragkörper 6 sind zwei, in Richtung derEach of these guide rails 4 thus has a base 5 of essentially rectangular cross section. A supporting body 6 with an approximately trapezoidal cross-section sits on this base. In this support body 6 are two, in the direction of
Längsachse der Führungsschienen 4 verlaufende Führungsnuten 7 bzw. 8 eingelassen. Die erste Führungsnut 7 weist rechteckigen Querschnitt auf und öffnet sich nach der von der Basis 5 abgewandten Seite der Führungsschiene 4. Die zweite Führungsnut 8 ist im Tragkörper 6 dazu um 90° gedreht angeordnet, sie öffnet sich in einer Richtung, die parallel zur Basis 5 der Führungsschienen 4 liegt.In the longitudinal axis of the guide rails 4 running guide grooves 7 and 8, respectively. The first guide groove 7 has a rectangular cross section and opens toward the side of the guide rail 4 facing away from the base 5. The second guide groove 8 is arranged in the support body 6 rotated by 90 °, it opens in a direction parallel to the base 5 the guide rails 4 lies.
In der Explosionsdarstellung von FIG 1 ist angedeutet, daß die erste Führuπgsnut 7 zur Vertikalführung der als Schlitten ausgebildeten Stirnwand 2 des Stapelfaches dient. Diese Stirnwand weist daher rechtwinklig aus ihren Schmalseiten hervorstehende Lagerzapfen 9 bzw. 10 mit darauf angeordneten Kugellagern 11 auf. Die paarweise den Schmalseiten der Stirnwand 2 zugeordneten Lagerzapfen 9 bzw. 10 mit den darauf angeordneten Kugellagern 11 haben verzugsweise einen ausreichenden axialen Abstand voneinander. Denn im montier ten Zustand des Stapelfaches laufen die Ku gellager 11 j eweils in eine der ersten Führungsnuten 7 der Führungsschienen 4. Ein ausreichender radialer Abstand der ersten Lagerzapfenpaare 9 bzw. 10 untereinander gewährleistet eine sichere Führung der Stirnwand 2 des Stapelfaches in den ersten Führungsnuten 7, obwohl die an der Stirnwand 2 befestigten und den Stapel von Aufzeichnungsträger tragenden Fachträger 3 auf diese Kugellager 11 ein entsprechendes Drehmoment ausüben.In the exploded view of FIG. 1 it is indicated that the first guide groove 7 serves for the vertical guidance of the end wall 2 of the stacking compartment which is designed as a slide. This end wall therefore has bearing pins 9 and 10 protruding at right angles from its narrow sides with ball bearings 11 arranged thereon. The bearing journals 9 and 10 assigned in pairs to the narrow sides of the end wall 2, with the ball bearings 11 arranged thereon, preferably have a sufficient axial distance from one another. Because in the mount th state of the stacking compartment, the ball bearings 11 each run into one of the first guide grooves 7 of the guide rails 4. A sufficient radial distance between the first pairs of trunnions 9 and 10 ensures reliable guidance of the end wall 2 of the stacking compartment in the first guide grooves 7, although the attached to the end wall 2 and the stack of recording media carrying tray 3 exert a corresponding torque on these ball bearings 11.
FIG 1 deutet darüber hinaus an, daß in die zweite Führungsnut 8 der Führungsschienen 4 eine Kette 12 eingelegt ist. Die Querschnittsform der zweiten Führungsnut 8 ist diesem Kettenquerschnitt und der Gesamtfunktion der Führungsschienen mit der Maßgabe angepaßt, daß alle Möglichkeiten genutzt werden, die Führungsschiene 4 durch Gestaltung ihrer Querschnittsform verwindungssteif zu gestalten.FIG 1 also indicates that a chain 12 is inserted into the second guide groove 8 of the guide rails 4. The cross-sectional shape of the second guide groove 8 is adapted to this chain cross-section and the overall function of the guide rails with the proviso that all possibilities are used to make the guide rail 4 torsion-resistant by designing its cross-sectional shape.
In FIG 2 ist nun ein Teilschnitt durch eine der Führungsschienen 4 dargestellt, um die Anordnung der Kette 12 in der zweiten Führungsnut 8 weiter zu verdeutlichen. Die Kette 12 ist in die zweite Führungsnut 8 eingelegt. Sie ist am oberen Ende der Führungsschiene 4 mit einer Achse 13 festgelegt, die in vertikal vorspringede Befestigungsaugen 14 der Führungsschiene 4 eingeschoben ist. Am unteren Ende der Führungsschiene 4 ist die Kette mit Hilfe einer Zugfeder 15 eingespannt. Sie ist damit unter Vorspannung stehend ortsfest in der Führungsnut 8 angeordnet. Diese Kette bildet ein Element des Getriebes, mit dem das Stapelfach höhenverstellt wird.2 shows a partial section through one of the guide rails 4 in order to further illustrate the arrangement of the chain 12 in the second guide groove 8. The chain 12 is inserted into the second guide groove 8. It is fixed at the upper end of the guide rail 4 with an axis 13 which is inserted into the vertically projecting fastening eyes 14 of the guide rail 4. At the lower end of the guide rail 4, the chain is clamped by means of a tension spring 15. It is thus arranged in the guide groove 8 in a stationary manner under prestress. This chain forms an element of the gear unit with which the stacking compartment is adjusted in height.
In FIG 3 sind weitere Elemente dieser Getriebeanordnung dargestellt. In Eingriff mit der Kette 12 steht ein Ritzel 16. Dieses Ritzel 16 ist mit einem Kettenrad 17 gekoppelt. Dieses ist in FIG 3 im Zusammenwirken mit einer weiteren3 shows further elements of this gear arrangement. A sprocket 16 is in engagement with the chain 12. This sprocket 16 is coupled to a sprocket 17. This is shown in FIG 3 in cooperation with another
Kette 18 dargestellt, die ihrerseits über ein weiteres Kettenrad 19 von einem Ausgleichsmotor 20 angetrieben wird. In FIG 3 ist schematisch nur eine Seite der Lagerung der Stirnwand 2 angedeutet. Die gegenüberliegende Seite ist aber spiegelbildlich symmetrisch ausgebildet, abgesehen davon, daß selbstverständlich der Ausgleichsmotor 20 nur einmal vorgesehen ist. Denn das Kettenrad 17 ist zusammen mit dem Ritzel 16 auf einer Hubwelle 21 starr angeordnet, die in der Stirnwand 2 umläuft und deren rechtes, in FIG 3 dargestelltes Ende den einen der ersten Lagerzapfen 9 bildet. Auf der gegenüberliegenden Schmalseite der Stirnwand 2 ist auf dieser Welle wiederum ein Ritzel 16 starr angeordnet, das mit einer weiteren, in die gegenüberliegende Führungsschiene 4 eingespannten Kette 12 in Wirkverbindung steht.Chain 18 shown, which in turn is driven by a differential motor 20 via a further sprocket 19. In 3 shows schematically only one side of the mounting of the end wall 2. The opposite side is, however, mirror-symmetrical, apart from the fact that the compensating motor 20 is of course only provided once. Because the sprocket 17 is rigidly arranged together with the pinion 16 on a lifting shaft 21 which rotates in the end wall 2 and whose right end, shown in FIG. 3, forms one of the first bearing journals 9. On the opposite narrow side of the end wall 2, a pinion 16 is rigidly arranged on this shaft, which is in operative connection with a further chain 12 clamped in the opposite guide rail 4.
Der Ausgleichsmotor ist - aus Gründen der Übersichtlichkeit in der schematischen Darstellung von FIG 3 nicht dargestellt - mit dem höhenverstellbaren Teil des Stapelfaches mechanisch verbunden, vorzugsweise am Schlitten 2 festgelegt. Er ist als getakteter Getriebemotor ausgelegt, der sich selbst hemmt. Dadurch wird die momentane Vertikalposition des Stapelfaches gesichert. Zur Steuerung der Drehbewegung des Auεgleichsmotors 20 ist der Oberfläche des Stapels der blattförmigen Aufzeichnungstrager 1 zugeordnet ein Sensor 22 vorgesehen, wie in FIG 1 schematisch dargestellt ist. Dieser ta stet die vertikale Lage der Stapeloberfläche ab. Dieser Sensor 22 ist damit als Niveauschalter eingesetzt, er gibt mit einer Toleranz von ca. 10 blattförmigen Aufzeichnungsträgern 1 ein Signal ab, das als Steuertaktsignal für eine gegenläufige Ausgleichsbewegung dem Ausgleichsmotor 20 zugeführt wird.The compensating motor is - for reasons of clarity in the schematic representation of FIG 3 not shown - mechanically connected to the height-adjustable part of the stacking compartment, preferably fixed on the carriage 2. It is designed as a clocked gear motor that inhibits itself. This ensures the current vertical position of the stacking compartment. To control the rotary movement of the equalization motor 20, a sensor 22 is provided assigned to the surface of the stack of sheet-shaped recording media 1, as is shown schematically in FIG. This scans the vertical position of the stack surface. This sensor 22 is thus used as a level switch, it emits a signal with a tolerance of approximately 10 sheet-shaped recording media 1, which is fed to the compensating motor 20 as a control clock signal for an opposite compensating movement.
Wenn das beschriebene Ausführungsbeispiel in der Zeichnung aus Gründen der Übersichtlichkeit vereinfacht dargestellt ist, so bedeutet dies nicht die unmittelbare Beschränkung der Erfindung auf die beschriebene vereinfachte Ausführungsform. Anhand der Gestaltung des Querschnittsprofiles der Führungsschienen 4 wurde dargelegt, welcher Stellenwert der material- und gewichtsoptimierten, dabei verwindungs steifen Gestaltung beigemessen wird. Dies gilt selbstverständlich auch für die lediglich in vereinfachten Querschnittsformen dargestellten weiteren Teilen des Stapelfaches, insbesondere die Stirnwand und die Fachbodenträger 3. Diese sind hier lediglich aus Gründen der besseren Übersicht und des leichteren Verständnisses der Zeichnung in ihren Grundformen dargestellt. Für den Fachmann ist es einleuchtend, daß die genannten Elemente in der konstruktiven Ausgestaltung ihrer Querschnittsformen bei einer praktisehen Realisierung von den dargestellten Grundformen abweichen werden, um das Erfordernis geringen Gewichtes bei hoher Steifigkeit zu erfüllen.If the described exemplary embodiment is shown in simplified form in the drawing for reasons of clarity, this does not mean that the invention is directly limited to the described simplified embodiment. On the basis of the design of the cross-sectional profile of the guide rails 4, it was explained what importance the material and weight-optimized, while twisting rigid design. Of course, this also applies to the further parts of the stacking compartment, which are only shown in simplified cross-sectional shapes, in particular the end wall and the shelf supports 3. These are shown here in their basic forms only for the sake of a better overview and easier understanding of the drawing. It is obvious to the person skilled in the art that the elements mentioned in the structural design of their cross-sectional shapes will deviate from the basic shapes shown in a practical implementation in order to meet the requirement of low weight with high rigidity.
7 Patentansprüche 3 FIG 7 claims 3 FIG
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883808621 DE3808621A1 (en) | 1988-03-15 | 1988-03-15 | STACKED TRAY FOR SHEET-SHAPED RECORD CARRIERS IN A PRINTING DEVICE |
DE3808621 | 1988-03-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0394240A1 true EP0394240A1 (en) | 1990-10-31 |
EP0394240B1 EP0394240B1 (en) | 1991-10-30 |
Family
ID=6349780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880904912 Expired - Lifetime EP0394240B1 (en) | 1988-03-15 | 1988-06-09 | Pile receiver for sheets for printing in a printer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0394240B1 (en) |
DE (2) | DE3808621A1 (en) |
WO (1) | WO1989008597A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19755778C1 (en) * | 1997-12-16 | 1999-08-26 | Printfinish Gmbh Druckweiterve | Flat stack locator with stop for stack front side |
EP1058670B2 (en) * | 1998-02-25 | 2008-08-20 | Voith Paper Jagenberg GmbH | Device for stacking sheets |
DE19855191C2 (en) * | 1998-11-30 | 2002-06-20 | Oce Printing Systems Gmbh | Stacking device for an output unit of a printing device |
DE502004008262D1 (en) | 2004-05-05 | 2008-11-27 | Mueller Martini Holding Ag | Apparatus for forming stacks of printed products |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5483275A (en) * | 1977-12-14 | 1979-07-03 | Canon Kk | Paper surface detector |
-
1988
- 1988-03-15 DE DE19883808621 patent/DE3808621A1/en not_active Withdrawn
- 1988-06-09 EP EP19880904912 patent/EP0394240B1/en not_active Expired - Lifetime
- 1988-06-09 DE DE8888904912T patent/DE3865972D1/en not_active Expired - Lifetime
- 1988-06-09 WO PCT/DE1988/000341 patent/WO1989008597A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO8908597A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0394240B1 (en) | 1991-10-30 |
DE3808621A1 (en) | 1989-09-28 |
DE3865972D1 (en) | 1991-12-05 |
WO1989008597A1 (en) | 1989-09-21 |
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