EP0444110B1 - Bogentransportvorrichtung mit greifer - Google Patents

Bogentransportvorrichtung mit greifer Download PDF

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Publication number
EP0444110B1
EP0444110B1 EP89913209A EP89913209A EP0444110B1 EP 0444110 B1 EP0444110 B1 EP 0444110B1 EP 89913209 A EP89913209 A EP 89913209A EP 89913209 A EP89913209 A EP 89913209A EP 0444110 B1 EP0444110 B1 EP 0444110B1
Authority
EP
European Patent Office
Prior art keywords
picker
transport
transport picker
crank
movement
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.)
Expired - Lifetime
Application number
EP89913209A
Other languages
English (en)
French (fr)
Other versions
EP0444110A1 (de
Inventor
Arno Ebner
Heinz-G. Bethmann
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.)
Kodak GmbH
Eastman Kodak Co
Original Assignee
Kodak GmbH
Eastman Kodak Co
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 Kodak GmbH, Eastman Kodak Co filed Critical Kodak GmbH
Publication of EP0444110A1 publication Critical patent/EP0444110A1/de
Application granted granted Critical
Publication of EP0444110B1 publication Critical patent/EP0444110B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables
    • 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
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/08—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being oscillated in arcuate paths

Definitions

  • the invention relates to a sheet-transport device with a transport picker and a driving and control means which comprises a crank pin which is hingedly connected with said transport picker via a coupling element for causing said transport picker to carry out forward and return movements between an initial position and an end position, the crank shaft of said crank pin being drivable by a motor for a complete revolution during each of the transport picker's cycle of movements, which consists of a forward and a return movement, and the driving and control means comprising a means for the transport picker which is operative in response to the position of the crank pin and delays the forward and return movements thereof over an angular range associated with the end positions of the transport picker during rotation of the crank pin.
  • Devices of this type are known, for example, from US-A-3,877,694 and FR-A-705 282 which disclose such devices for the sheet transporting in printing machines, said devices being provided with a transport picker whose moving speed is delayed during the depositing of the sheets.
  • the construction of the device and the control means required can be considerably simplified. Due to the fact that the transport picker is arrested during its forward movement and before it reaches its end position, i.e. in front of the corresponding crank dead center point, it is first of all ensured that the transported sheet stack or the transported sheet is released for stacking while the transport picker is arrested, i.e. out of a defined arresting position, which is a requirement for the correct stacking of the sheets without the stacked sheets being displaced in a disturbing manner.
  • the rotary movement of the crank shaft which continues to rotate together with the crank pin is available in order to derive from the rotary movement of the crank shaft those drive and control functions which have to be carried out while the transport picker is in its arrested condition.
  • the rotary movement of the crank shaft which continues rotating when the transport picker is arrested can serve as a drive for opening the transport picker to release the sheet stack or the sheet.
  • the stationary sheet stack or sheet is separated from the transport picker during the remaining path along which the transport picker moves after its arrest and before it reaches its end position.
  • the transport picker is reliably disengaged from the transported and released stack or sheet without the order of stacking being interfered with.
  • the device according to the invention is, moreover, particularly suitable for such an application because the transported. Sheet stacks or sheets are released when the transport picker is arrested, and are therefore reliably deposited in the associated compartment in the correct order and position.
  • a controllable abutment which temporarily blocks movement of the transport picker may serve as an arresting means, the transport picker being in such case frictionally connected with the coupling element via a resilient gear connection, and said coupling element transmitting the driving movement to the transport picker.
  • the transport picker can also be arrested for specially desired phases of its cycle of movements without controllable abutments being used if, according to an advantageous embodiment, the crank pin is mounted so as to be adjustable radially to the axis of the crank shaft and the arresting means comprises an adjustment mechanism for adjusting the radial distance from the axis of the crank shaft in response to the rotary position of the crank pin.
  • the picker movement is temporarily arrested in that the crank pin when passing through a desired angular range is adjusted such that the coupling element just carries out a pivotal movement about the axis of its hinge at the output end, i.e. the crank pin produces a zero stroke so-to-speak when the coupling element is in the corresponding position.
  • the adjustment mechanism of the crank pin may comprise a fixed, cam along which the radially shiftable crank pin is guided for the control of its radial distance from the axis of the crank shaft, the cam having at least one section serving as an arresting area for the transport picker and extending concentrically with the axis of the hinge of the coupling element on the output side, i.e. in the form of an arc around the axis of the output hinge of said coupling element on the output side.
  • cam is designed as a closed cam groove in which a lateral control projection of the crank pin is received.
  • the crank pin can take the form of a crank guided in a slotted link which extends radially to the axis of the crank shaft.
  • a slotted link is provided on a crank disk
  • said crank disk can be designed as a cam disk and provided with irregularities which serve as cam sections
  • the cam sections can serve to switch over the transport picker between a picker position, in which sheets taken over by the transport picker in its initial position are clamped, and an open position, in which the transported sheets are released by the transport picker, and for this purpose can cooperate with the transport picker either directly or via associated control levers.
  • the cam sections can serve to switch over a spring arrangement designed for example as a snap mechanism either directly, or indirectly by means of a control lever if such a mechanism is provided in order to selectively bias a movable claw member of the transport picker by the force of the snap spring into the open position or the clamping position.
  • the coupling element connected with the crank pin is part of a four-bar linkage whose driven rocking arm is hingedly connected with the transport picker.
  • Fig. 1 shows a copy handling apparatus 1 with a lateral wall removed and in a schematically simplified representation.
  • the handling apparatus 1 is a so-called finisher, i.e. an apparatus which in connection with a copier serves to stack copy sheets supplied by the copier in a desired order in a stacking station 5, the copy sheets being transported within the apparatus 1 to the stacking station 5 by means of a transport device generally denoted 3.
  • the handling apparatus 1 comprises a copy-feeding unit with transport rollers 6 through which the individual copy sheets 7 are fed to a copy collecting unit 9 where they are collected to form a copy stack which is transported by means of the sheet transport device 3 to stacking station 5, or the copy sheets 7 are individually transferred to the stacking station 5 by sheet transport device 3.
  • the stack can be stapled by means of a conventional stacking device associated with the collecting unit 9 and not illustrated, before the stack is advanced to the stacking station 5.
  • a conventional stacking device associated with the collecting unit 9 and not illustrated, before the stack is advanced to the stacking station 5.
  • the individual copy sheets 7 or the stacks formed of individual copy sheets 7 are stacked one on top of the other in an offset arrangement, if so desired.
  • a supporting table 11 of stacking station 5 is shiftable not only in the vertical direction but also, selectively, in the horizontal direction.
  • the sheet-transport device 3 comprises a frame 13 with a wall 14 which defines a vertical plane extending in the direction of sheet transport.
  • Levers 19 and 20 respectively are pivotally mounted about journals 16 and 17 on frame 13.
  • the levers extend at a distance from wall 14 and parallel thereto and by means of their ends facing away from the journals 16, 17 are hingedly connected with a picker housing 23 of a sheet-transport picker generally denoted 24.
  • the picker housing 23 comprises two housing plates 27 of an identical shape which extend at a distance from, and parallel with each other and between which the levers 19, 20 are received, the Figs. showing one housing plate, namely housing plate 27, which fades the viewer.
  • crank disk 29 is mounted on frame 13, said crank disk being drivable by means of a geared engine, located behind the wall 14 and not visible therefore, for rotary movement in a direction as indicated by the arcuate arrow 31.
  • the crank disk 29 includes a slotted link 35 extending radially to the axis 33 of its driving shaft, i.e. the axis of the crank shaft, a crank including a crank pin 37 being guided in said slotted link for radial movement.
  • a coupling element taking the form of a straight lever is hinged to crank pin 37.
  • a cam 41 is provided behind the crank disk 39 on wall 14 which is indicated in dash-dotted lines in Figs. 2 to 5 and along which the crank pin 37 is guided with a rear control projection which is not visible in the drawing.
  • cam 41 whose shape is more clearly apparent from Fig. 6, is formed by a closed cam groove 42 which is cut into fixed wall 14, see Fig. 7.
  • the control projection of crank pin 37 extends into cam groove 42 so that the crank pin 37 is necessarily guided along cam 41 via the crank in slotted link 35 of crank disk 29 during rotary movement in the direction of the arrow 31.
  • coupling element 39 On its end section facing away from crank pin 37 and located on its output side, coupling element 39 is hinged by means of a hinge 43 to a portion 45 of lever 19. Portion 45 is disposed substantially at right angles to the main portion of lever 19, as can best be seen in Figs. 4 and 5.
  • lever 19 On its end section remote from journal 16, lever 19 has a link 47 connected to it and engaging an oblong hole 49 provided on each plate 27 of the picker housing to form a pin-and-slot connection. In a corresponding manner the end of lever 20 is received by means of a link 50 connected to it in oblong holes 51 of the plates 27.
  • a tension spring 53 is provided between the plates 27 which on the one hand engages the plates 27 and, on the other, the link 50 and by virtue of its spring force tends to move the picker housing 23 into the tilted position in which it is shown in Figs. 4 and 5.
  • the transport picker 24 is tilted to the position in which it is closest to the collecting unit 9.
  • the link 50 in oblong hole 51 moving in opposition to the force of tension spring 53 towards the end of the oblong hole 51 shown at the top in the drawing.
  • Plates 27 of the picker housing 23 form at their lower ends facing away from the oblong holes 49 and 51 a picker claw 55 with a claw member 56 guided for movement in said picker claw and cooperating with a fixed counter surface 57 on the picker claw 55 for clamping copy sheets 7.
  • Figs. 2, 4 and 5 show the claw member 56 in an opening position spaced from the counter surface 57 whereas Fig. 3 shows the claw member 56 in a clamping position in which it clamps copy sheets 7 on the counter surface 57.
  • the movable claw member 56 is operated by a snap mechanism including a spring 59 in the form of a leg spring one leg of which is linked to claw member 56 at 60 (see Fig. 3) and the other leg of which is linked to an angular lever 62 at 61, which lever is in turn linked to picker claw 55 in the area of the connection of its two lever arms at 63.
  • That lever arm of angular lever 62 which is opposite to the point of linkage to spring 59 at 61 carries in its end section an operating projection 65 projecting rearwardly from the plane of lever arm 64, see in particular Figs. 2 and 3.
  • the projection can be brought into engagement with an operating member in order to move the angular lever 62 to one of its two stable positions in which the spring 59 urges the claw member 56 into its clamping position, see Fig. 3, or urges the claw member 56 into its opening position, see Figs. 2, 4, 5.
  • the snap mechanism is moved from its opening position shown in Fig. 2 to its closing position shown in Fig. 3 by a control lever 67 which is mounted on journal 17 behind lever 20 and whose sickle-shaped curved end section 68 is provided for cooperation with the control projection 65 on arm 64 of angular lever 62.
  • the control lever 67 has a bent-off cam follower arm 69 which is provided opposite to its sickle-shaped end section 68 and cooperates with a closing cam 70 provided on the rear side of crank disk 29 in the form of a laterally projecting rib and pivoting counterclockwise when making contact with arm 69 of control lever 67, the sickle-shaped section 68 taking along the control projection 65 on angular lever 62, see Fig.
  • crank disk 29 During operation each complete revolution of crank disk 29 in the direction indicated by arrow 31 produces a cycle of movements of the transport picker 24 between its initial position shown in Fig. 2 and its final position shown in Fig. 5.
  • the transmission ratio of the four-bar linkage consisting of crank disk 29 with crank pin 37, the coupling element 39 and the lever 19, which serves as an output arm, is chosen such that transport picker 24 can carry out an overtravel movement when returning to its initial position shown in Fig. 2 so that it is ensured that the end of picker claw 55 is reliably brought into contact with collecting unit 9, such overtravel possibly resulting in a slight tilting of the picker housing 23 in opposition to the action of tension spring 53.
  • a special feature of the invention consists in that the cam 41 controlling the radial position of the crank pin 37 comprises an arresting range denoted 75 in Fig. 6 in the area of the initial position of transport picker 24 shown in Fig. 2.
  • the cam 41 controlling the radial position of the crank pin 37 comprises an arresting range denoted 75 in Fig. 6 in the area of the initial position of transport picker 24 shown in Fig. 2.
  • transport picker 24 is arrested in spite of the continuing rotation of crank disk 29.
  • the rotary movement carried out by crank disk 29 during the arrest of transport picker 24 causes the closing cam 70 to make contact with arm 69 of control lever 67 so that the sickle-shaped end area 68 thereof contacts control projection 65 and thus changes over the snap mechanism of the claw member 56 so that said member is moved to its clamping position, see Fig.
  • transport picker 24 is moved from the position shown in Fig. 3 in a forward movement into the position shown in Fig. 4 in which it is located shortly in front of its end position, an advance travel area 76 being passed on cam 41.
  • the opening cam 71 makes contact with the control projection 65 of the snap mechanism to move claw member 56 into its opening position.
  • this operation has already been completed, i.e. transport picker 24 is open.
  • a second arresting range 77 is passed on cam 41, the transport picker 24 being arrested in the position shown in Fig.
  • crank disk 29 is now stopped in that the drive motor is switched off.
  • the drive motor is switched by means of a first and a second limit switch 81 and 83 which are mounted adjacent to the circumference of crank disk 29 on fixed wall 14 and cooperate with switching cams 84 and 85 provided On the circumference of crank disk 29.
  • the picker claw is separated from the copy sheet 7 to be released or the stack of copy sheets 7 to be released in the horizontal direction of movement so that the sheets 7 are deposited on the supporting table in the correct order.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)

Claims (7)

  1. Blatttransportvorrichtung mit einem Transportgreifer und einer Antriebs- und Steuereinrichtung, die zum Erzeugen von Vorlauf- und Rücklaufbewegungen des Transportgreifers zwischen einer Anfangsstellung und einer Endstellung einen mit diesem über eine Koppel gelenkig verbundenen Kurbelzapfen besitzt, dessen Kurbelwelle für jeden aus Vorlauf- und Rücklaufbewegung bestehenden Bewegungszyklus des Transportgreifers für eine ganze Umdrehung motorisch antreibbar ist, wobei die Antriebs- und Steuereinrichtung eine in Abhängigkeit von der Stellung des Kurbelzapfens wirksame Einrichtung für den Transportgreifer aufweist, welche dessen Vor- und Rücklaufbewegung über einen den Endstellungen des Transportgreifers zugeordneten Drehwinkelbereich bei umlaufendem Kurbelzapfen verzögert, dadurch gekennzeichnet,
    - daß der Kurbelzapfen (37) der Koppel (39) in eine Führungskulisse (35) formschlüssig eingreift, die an einer von der Kurbelwelle antreibbaren Kurbelscheibe (29) radial zu deren Drehachse (33) verlaufend angeordnet ist,
    - daß der Kurbelzapfen (37) ferner in eine in seiner Umlaufebene ortsfest angeordnete, in sich geschlossene Steuernut (42) eingreift,
    - daß die Steuernut (42) zwei diametral angeordnete, Drehwinkelbereiche (75 bzw. 77) einschließende Kurvenabschnitte aufweist, die zur Achse eines abtriebsseitigen Gelenks (43) der Koppel (39) konzentrisch verlaufen,
    - daß durch die den Drehwinkelbereichen (75 bzw. 77) zugeordneten Kurvenabschnitte der Steuernut (42) der Radialabstand des Kurbelzapfens zur Achse (33) der Kurbelwelle so verstellbar ist, daß eine den Stillstand der Schwenkbewegung des Transportgreifers (24) bewirkende Neutralbewegung der Koppel (39) erzeugt wird und
    - daß die den Stillstand des Transportgreifers (24) bewirkenden Drehwinkelbereiche (75 bzw. 77) der Steuernut (42) vor den den Endstellungen des Transportgreifers (24) benachbarten Kurbeltotpunkten gelegen sind.
  2. Vorrichtung nach Anspruch 1, daß der Kurbelzapfen (37) an einem Gleitstein angeordnet ist, der in der Führungskulisse (35) der Kurbelscheibe (29) geführt ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet,
    - daß an der Kurbelscheibe (29) ein erster und ein zweiter Steuernocken (71 bzw. 70) angeordnet sind,
    - daß der Transportgreifer (24) eine Greiferbacke (56) besitzt, die durch die Antriebs- und Steuereinrichtung relativ zu einer Gegenfläche (57) des Greifers (24) zwischen einer Greifstellung für das Festklemmen von in der Anfangsstellung vom Transportgreifer (24) übernommenen Blättern (7) an der Gegenfläche (57) und einer Offenstellung zum Freigeben transportierter Blätter (7) beweglich ist,
    - daß die Greiferbacke (56) mittels einer Federanordnung, die als Kippsprungwerk ausgebildet ist, zwischen einer ersten Stellung und einer zweiten Stellung umschaltbar ist, in denen es mit seiner Sprungfeder (59) die Greiferbacke (56) in die Offenstellung bzw. in die Greifstellung vorspannt und
    - daß das Kippsprungwerk im Bewegungsweg der zum Umschalten des Kippsprungwerks in eine erste bzw. zweite Stellung dienenden Steuernocken (70 bzw. 71) angeordnet ist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Koppel (39) Teil eines Viergelenkgetriebes ist, das eine mit ihr verbundene Schwinge (19), die an ihrem freien Ende am Transportgreifer (24) angelenkt ist, und einen im Abstand von der Schwinge am Transportgreifer (24) angelenkten zusätzlichen Lenker (20) besitzt, dessen vom Transportgreifer (24) abgekehrter Endbereich mit gestellfester Schwenkachse (17) schwenkbar gelagert ist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Transportgreifer (24) mittels Stift-Schlitz-Verbindungen (47, 49, 50, 51) für eine begrenzte Kippbewegung relativ zu der Schwinge (19) und dem Lenker (20) an diesen angelenkt ist und daß eine den Greifer (24) in eine Endstellung der Stift-Schlitz-Verbindungen vorspannende Feder (53) vorgesehen ist.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß eine Übersteuereinrichtung (87), vorhanden ist, mittels deren der Transportgreifer (24) in Abhängigkeit von den von ihm bei den Vorlauf- und Rücklaufbewegungen eingenommenen Stellungen gegen die Wirkung der an ihm angreifenden Feder (53) kippbar ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der Transportgreifer (24) durch die Feder (53) entgegen der Richtung der Vorlaufbewegung kippbar ist.
EP89913209A 1988-11-21 1989-11-16 Bogentransportvorrichtung mit greifer Expired - Lifetime EP0444110B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3839297A DE3839297A1 (de) 1988-11-21 1988-11-21 Blatttransportvorrichtung mit einem transportgreifer
DE3839297 1988-11-21
PCT/EP1989/001374 WO1990005691A1 (en) 1988-11-21 1989-11-16 Sheet-transport device with a transport picker

Publications (2)

Publication Number Publication Date
EP0444110A1 EP0444110A1 (de) 1991-09-04
EP0444110B1 true EP0444110B1 (de) 1994-05-18

Family

ID=6367567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89913209A Expired - Lifetime EP0444110B1 (de) 1988-11-21 1989-11-16 Bogentransportvorrichtung mit greifer

Country Status (4)

Country Link
EP (1) EP0444110B1 (de)
JP (1) JPH04501697A (de)
DE (2) DE3839297A1 (de)
WO (1) WO1990005691A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104340706A (zh) * 2014-10-10 2015-02-11 陈东 复合面料自动抓取机构

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626577C2 (de) * 1996-07-02 1999-03-18 Eastman Kodak Co Vorrichtung zum stapelweisen Ablegen und Ausrichten von einzeln zugeführten Blättern
DE19641918C2 (de) * 1996-10-11 1999-04-15 Eastman Kodak Co Vorrichtung zum Ausrichten von einzeln in eine Sammelstation zugeführten und dort stapelförmig übereinander abgelegten Blättern
DE19712862C2 (de) * 1997-03-27 2001-02-01 Eastman Kodak Co Vorrichtung zum Zuführen des Drahtanfangs von einer Heftdraht-Vorratsrolle zu einer Heftvorrichtung für Blattstapel
DE19722298A1 (de) * 1997-05-28 1998-12-03 Eastman Kodak Co Vorrichtung zum Zusammenheften von Blättern
DE19722295C2 (de) * 1997-05-28 2000-05-18 Eastman Kodak Co Vorrichtung zum Ablegen von Blättern
DE19752285A1 (de) * 1997-11-26 1999-05-27 Eastman Kodak Co Heftvorrichtung
US6461097B1 (en) * 2000-09-29 2002-10-08 Maxon Lift Corporation Wheelchair lift device
EP1419898B1 (de) * 2002-11-18 2008-05-14 Müller Martini Holding AG Hefteinrichtung zur Herstellung von Druckerzeugnissen aus heftklammergebundenen Druckprodukten
DE202012101998U1 (de) 2012-05-31 2013-09-02 Weidmüller Interface GmbH & Co. KG Drucker mit einer Vereinzelungsvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR705282A (fr) * 1929-11-12 1931-06-04 Déchargeur de feuilles de papier
FR1182543A (fr) * 1957-04-20 1959-06-25 Schnellpressenfab Heidelberg Dispositif de commande du va-et-vient du chariot à pinces d'un dispositif d'alimentation en feuilles des machines à imprimer et travailler le papier
DE2362104C3 (de) * 1973-12-14 1980-11-27 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenanlegevonichtung mit Zuführgreifern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104340706A (zh) * 2014-10-10 2015-02-11 陈东 复合面料自动抓取机构

Also Published As

Publication number Publication date
DE3839297A1 (de) 1990-05-23
WO1990005691A1 (en) 1990-05-31
DE68915452T2 (de) 1994-12-01
JPH04501697A (ja) 1992-03-26
EP0444110A1 (de) 1991-09-04
DE68915452D1 (de) 1994-06-23

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