EP0006522B1 - Verfahren und Vorrichtung zum Öffnen gefalzter Druckbogen - Google Patents

Verfahren und Vorrichtung zum Öffnen gefalzter Druckbogen Download PDF

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Publication number
EP0006522B1
EP0006522B1 EP79101877A EP79101877A EP0006522B1 EP 0006522 B1 EP0006522 B1 EP 0006522B1 EP 79101877 A EP79101877 A EP 79101877A EP 79101877 A EP79101877 A EP 79101877A EP 0006522 B1 EP0006522 B1 EP 0006522B1
Authority
EP
European Patent Office
Prior art keywords
printed sheet
printed
sheet
forced air
corner
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
Application number
EP79101877A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0006522A1 (de
Inventor
Horst Rathert
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.)
Rahdener Maschinenfabrik August Kolbus GmbH and Co KG
Original Assignee
Rahdener Maschinenfabrik August Kolbus GmbH and Co KG
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 Rahdener Maschinenfabrik August Kolbus GmbH and Co KG filed Critical Rahdener Maschinenfabrik August Kolbus GmbH and Co KG
Publication of EP0006522A1 publication Critical patent/EP0006522A1/de
Application granted granted Critical
Publication of EP0006522B1 publication Critical patent/EP0006522B1/de
Expired 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
    • B65H5/30—Opening devices for folded sheets or signatures
    • 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
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/446—Assisting moving, forwarding or guiding of material
    • B65H2301/4461—Assisting moving, forwarding or guiding of material by blowing air towards handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles

Definitions

  • the invention relates to a method and a device for opening folded printed sheets, in particular for placing them on the conveyor saddle of a book stitching machine, in which an openable sheet is held by a conveying device on successive pneumatic devices for spreading out the individual, individual sheet parts one after the other up to an opening point is guided past in the printing sheet by grasping the printing sheet parts at a point opposite the back of the printing sheet, lifting them off the remaining printing sheet and directing them from the effective area of a downstream device for spreading in order to detect a subsequent printing sheet part.
  • DE-C-581077 discloses a method and a device for opening folded printed sheets, in which folded printed sheets with a horizontally lying, upwardly directed folded edge are occasionally transferred from a magazine to a conveying device and are guided past suction devices arranged one behind the other.
  • the individual sheet parts are spread apart one after the other up to the middle of the sheet from the rest of the sheet by suction devices capturing the respective outer sheet parts at a point opposite the sheet back and deflecting means keeping the spread sheet parts out of the effective range of the downstream suction device.
  • the printed sheet opened in this way is transported to the saddle of a downstream processing machine.
  • Some printed sheets folded in the cross fold allow the suction device to lead them in the opposite direction, but this is only possible with a corresponding contact edge in the downstream processing machine, which, depending on the manufacturer, can be at the front and back when viewed in the direction of travel.
  • the printed sheets are transported one after the other and at a distance from one another past the suction and deflection devices, consequently the opening process at an opening station must always be ended before a subsequent printed sheet can run in.
  • the device is limited in terms of an increase in the number of cycles, especially since, due to the so-called suction plate effect between two press sheet parts, a certain time is always required for the air to enter and thus to detach the foremost press sheet part, one wants to prevent the following press sheet part from being carried away.
  • the suction nozzles used in this known device are also not able to reliably detect all types of paper.
  • the suction nozzles used in this known device are also not able to reliably detect all types of paper.
  • the suction nozzles used in this known device are also not able to reliably detect all types of paper.
  • printed sheets consisting of strongly porous paper or printed sheets with inserted printed sheet parts from this strongly porous paper trouble-free opening as a result of the suction effect can often not be achieved.
  • DE-A-2362125 describes a device for separating sheets from a stack of sheets or for separating two sheets and for advancing using a fluid flow generating a vacuum between a convex surface and a sheet to be handled.
  • this separating device which works according to the wall jet effect, the flow emerging from the nozzle always remains on the curved surface, so that due to the centrifugal forces which arise here, only a slight suction effect is exerted on the sheet to be separated without any remote action.
  • Papers with a relatively high degree of stiffness, such as those used in printed sheets, cannot be lifted over a greater distance without additional mechanical movement of the separating elements, since contact with the nozzle occurs only at the nozzle exit surface. Only small bending moments act on the blade and consequently the leverage required to spread out curved parts with a higher degree of inherent rigidity is not available.
  • the object on which the invention is based is to create a method and a device of the type mentioned at the outset which enable reliable opening of all printed sheets and types of paper and with which a substantial increase in the number of cycles is achieved.
  • the method according to the invention first provides that the printing sheets are transported in a conveyor device with a printing sheet corner ahead and the opening at the corner adjacent to the preceding printing sheet corner is carried out by means of blowing air suction devices, in that the individual printing sheet parts are spread apart by the suction effect of the blowing air.
  • the printed sheets can be transported in a scale-like manner past the blowing air suction devices and the printed sheet parts can be spread apart by approximately 15 °.
  • the device for carrying out the method is based on a printing sheet feeder for separating printed sheets and a conveying device for holding and conveying the printed sheets past pneumatic devices arranged one behind the other for spreading out the individual printed sheet parts one after the other Opening point in the printed sheet, the printed sheet parts being lifted from the rest of the printed sheet at a point opposite the printed sheet back by the pneumatic devices and immediately downstream of the pneumatic devices, the spread sheet part leading out of the effective range of a subsequent pneumatic device is provided for sheet deflectors.
  • the device is characterized by a printing sheet feeder feeding the printing sheets of a conveying device with a printing sheet corner ahead and by blowing air suction plates acting on the corner adjacent to the preceding printing sheet corner with suction surfaces inclined at a flat angle to the sheet transport plane, in which blowing air nozzles producing a suction effect are arranged.
  • the invention shows for the first time a way by which the processing of all types of printing sheets is made possible, since only the corner of the printing sheet is opened and the nature of the rear printing sheet edge is of no importance. Sufficient time is available for safely lifting the sheet corner to lift off the outer sheet parts.
  • the invention permits an increase in the number of cycles, particularly in connection with the scale formation according to claim 2.
  • the blowing air nozzles emerge from the blowing air suction plates at an angle of approximately 15 ° in an advantageous embodiment and the blowing air nozzles are directed against the direction of the printing sheet to the spreading sheet corner.
  • blowing air nozzles are arranged in a line that rises in the direction opposite to the direction of the printing sheet, which enables the outer part of the printing sheet to be gradually drawn up to its corner, starting with the first nozzle closest to the printing sheet the result that the opening device manages with a minimum of blowing air.
  • blow air nozzles have a depression on the outlet side. This avoids jet deflection, as occurs in nozzles with an inclined section.
  • the blowing air suction plates are wedge-shaped in the direction of the printed sheet back and the printed sheet deflecting means are formed in each case by the rear side of a downstream blowing air suction plate and by a dividing tip arranged in front of the latter.
  • the wedge shape of the air suction plates is advantageous in that it prevents the bend parts from kinking and thus prevents them from being deformed when they are spread out.
  • a construction which is inexpensive in terms of production and assembly is based on the fact that the blower air suction plate and sheet deflection means are designed as one component.
  • the device for opening folded printed sheets 1 essentially consists of a conveying device 2 and a plurality of blown air suction devices 3 located one behind the other along the movement path of the printed sheets.
  • the closed printing sheets 1 are transferred endlessly, the printing sheets between clamping conveyor belts and are transported with their backs up and with a printing sheet corner ahead of the blown air suction devices.
  • the devices for opening the printing sheets consist of wedge-shaped blowing air suction plates installed on the side of the plane of movement of the printing sheets 1 on a supporting part 8, with a suction surface 5 directed towards the opening of the printing sheet and inclined at approximately 15 ° with a Row of blowing air nozzles 6, which are connected to a compressed air source, not shown.
  • the first printed sheet part spread apart from the remaining layer is placed behind the subsequent blown air suction plate, i.e. directed to its back 5 '.
  • deflection devices in the form of divider tips 7 arranged in front of the suction plates.
  • the blown air suction effect used ensures that all types of paper can be opened reliably. Since the suction effect on the sheet to be opened is always only as great as the reset voltage, the suction force reduced compared to the suction force cannot hold the sheet behind it with the same reset voltage. As a result, only the outermost part of the printed sheet is detected and double deduction with porous paper is reliably prevented.
  • the adhesive effect between two printing sheet parts and thus a simultaneous lifting of two printing sheet parts can also be excluded due to the relatively high restoring forces of the paper.
  • the position of the nozzle bores 6 in the suction plates was indicated in FIG. 1 by the dashed arrows representing the air outlet.
  • the nozzle bores are directed counter to the direction of travel of the printed sheets toward the opening of the printed sheets and are arranged at an angle of 15 ° to the suction surface 5, as shown in FIG. 3, which is useful for an optimal blowing-suction effect.
  • the nozzle bores 6 are still in a line that rises in the direction opposite to the running direction, which enables a gradual pulling up of the respective outer part of the printing sheet to its corner, starting at the first nozzle closest to the printing sheet.
  • the opening device can make do with a minimum of blown air.
  • the nozzle bores were additionally equipped with bores 6 '.
  • the conveying device can be designed to be height-adjustable in a manner known per se and therefore not described in relation to the feeder.
  • a folded printed sheet which is to be understood as any type of position, is to be placed astride a support saddle 11 of a book sewing machine, for example, the initially closed printed sheet is transported by the conveying device 2 past a first blowing air suction device and a first outer sheet part through it Blow-suction effect at its opening corner spread apart from the rest of the printed sheet and steered behind it by means of the divider tip of a subsequent blow-air suction device.
  • a second, again external, printed sheet part reaches the effective area of the following blowing air suction device in order to be spread apart by it and deflected by a following blowing air suction device.
  • the individual printed sheet parts are thus successively opened up to the opening point in the printed sheet in order to ultimately be transferred to a saddle.
  • blowing air suction plates can also be arranged parallel to the printing sheet conveying plane and can be swiveled away after detection of a printing sheet part.
  • a construction is also conceivable, which provides blowing air suction devices on both sides of the conveying device, as a result of which sheet parts are spread apart on both sides at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP79101877A 1978-07-01 1979-06-11 Verfahren und Vorrichtung zum Öffnen gefalzter Druckbogen Expired EP0006522B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782829067 DE2829067A1 (de) 1978-07-01 1978-07-01 Verfahren und vorrichtung zum oeffnen gefalzter druckbogen
DE2829067 1978-07-01

Publications (2)

Publication Number Publication Date
EP0006522A1 EP0006522A1 (de) 1980-01-09
EP0006522B1 true EP0006522B1 (de) 1983-01-12

Family

ID=6043360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101877A Expired EP0006522B1 (de) 1978-07-01 1979-06-11 Verfahren und Vorrichtung zum Öffnen gefalzter Druckbogen

Country Status (4)

Country Link
US (1) US4275873A (enrdf_load_stackoverflow)
EP (1) EP0006522B1 (enrdf_load_stackoverflow)
JP (1) JPS557197A (enrdf_load_stackoverflow)
DE (2) DE2829067A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149074B4 (de) * 2000-10-30 2009-02-05 Heidelberger Druckmaschinen Ag Öffnungs- und Umlegeeinrichtung für Mailinganlagen oder Falzmaschinen

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401300A (en) * 1981-12-21 1983-08-30 Leger' Equipment Corp. Air bearing shelf
CH656863A5 (de) * 1982-05-05 1986-07-31 Grapha Holding Ag Vorrichtung zum oeffnen von aus mehreren lagen bestehenden falzbogen.
US4522384A (en) * 1983-09-30 1985-06-11 World Color Press, Inc. Machine for collating signatures in the saddle format
CH665411A5 (de) * 1985-02-07 1988-05-13 Grapha Holding Ag Zusammentragmaschine.
SE8601784L (sv) * 1986-04-18 1987-10-19 Flensburg Carl G A Sett for ileggning av signaturer samt ileggare for utovning av settet
DE3621820A1 (de) * 1986-06-28 1988-01-07 Roland Man Druckmasch Falz- und transportvorrichtung
JP2502485Y2 (ja) * 1992-06-16 1996-06-26 株式会社タンケンシールセーコウ センサ取付治具
ES2084412T3 (es) * 1992-07-06 1996-05-01 Ferag Ag Procedimiento y dispositivo para insertar objetos en productos multihojas, en particular en productos de imprenta.
US5492316A (en) * 1994-09-20 1996-02-20 Bill McFarland Method and apparatus for opening signature sheets
EP0831045B1 (de) * 1996-09-06 2001-11-28 Ferag AG Verfahren und Vorrichtung zum Öffnen von flexiblen, flächigen Erzeugnissen
NL1005618C2 (nl) * 1997-03-25 1998-09-28 Kasius Vierveijzer B V Werkwijze en inrichting voor het openen van een document, in het bijzonder een tijdschrift.
US6705982B1 (en) * 2000-11-15 2004-03-16 Heidelberger Druckmaschinen Ag Pre-fold sword insertion device
US20060218816A1 (en) * 2005-04-04 2006-10-05 Maytag Corporation Dryer heat modulation with solid state motor switch
DE202010012500U1 (de) * 2010-09-13 2010-12-02 Hugo Beck Maschinenbau Gmbh & Co. Kg Vorrichtung zum Öffnen von kontinuierlich bewegten gebundenen Druckprodukten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22359E (en) 1943-08-03 Signature handling machine
DE581077C (de) * 1932-02-12 1933-07-20 Brehmer Geb Verfahren zum selbsttaetigen OEffnen zusammengefalzter Papierlagen o. dgl.
GB396816A (en) * 1932-02-17 1933-08-17 Brehmer Geb A method of and mechanism for automatically opening closed book signatures and the like
US2772880A (en) * 1953-03-05 1956-12-04 E G Staude Mfg Company Inc Sheet stacker
DE1099988B (de) * 1957-10-25 1961-02-23 Leipziger Buchbindereimaschine Vorrichtung zum OEffnen gefalzter Bogenlagen
CH498729A (it) * 1969-05-26 1970-11-15 Dolfini Leonardo Procedimento ed apparecchiatura per aprire ad alta velocità le segnature da alimentare a macchine da legatoria
DE2362125A1 (de) * 1972-12-18 1974-06-27 Commw Of Australia Vorrichtung zum trennen von blaettern in xerografischen druckeinrichtungen und anderen blatthandhabungsmechanismen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149074B4 (de) * 2000-10-30 2009-02-05 Heidelberger Druckmaschinen Ag Öffnungs- und Umlegeeinrichtung für Mailinganlagen oder Falzmaschinen

Also Published As

Publication number Publication date
EP0006522A1 (de) 1980-01-09
DE2829067A1 (de) 1980-01-10
DE2964473D1 (en) 1983-02-17
JPS557197A (en) 1980-01-18
JPS6363447B2 (enrdf_load_stackoverflow) 1988-12-07
US4275873A (en) 1981-06-30

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