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EP0365848B1 - Auslagebogenbremse für Bogendruckmaschinen - Google Patents

Auslagebogenbremse für Bogendruckmaschinen Download PDF

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Publication number
EP0365848B1
EP0365848B1 EP89117719A EP89117719A EP0365848B1 EP 0365848 B1 EP0365848 B1 EP 0365848B1 EP 89117719 A EP89117719 A EP 89117719A EP 89117719 A EP89117719 A EP 89117719A EP 0365848 B1 EP0365848 B1 EP 0365848B1
Authority
EP
European Patent Office
Prior art keywords
sheet
sucker
piston
delivery
suction
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
EP89117719A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0365848A2 (de
EP0365848A3 (en
Inventor
Nikolaus Dr. Spiegel
Karl-Heinz Filsinger
Roland Hirth
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0365848A2 publication Critical patent/EP0365848A2/de
Publication of EP0365848A3 publication Critical patent/EP0365848A3/de
Application granted granted Critical
Publication of EP0365848B1 publication Critical patent/EP0365848B1/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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/683—Slowing-down from chain delivery
    • 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
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • 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
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0883—Construction of suction grippers or their holding 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
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • 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 delivery sheet brake for a sheet printing machine, which has the features according to the preamble of claim 1.
  • the suction cup that detects the incoming sheet in the delivery at its rear edge is supported on a lever guide, one lever of which is connected to an eccentric of a uniformly rotating first drive element, which brings about the lifting and lowering movements of the suction cup, and the other lever of which is connected to a second drive element is coupled, which triggers the horizontal movements of the vacuum cleaner.
  • This second drive element consists of a cam disk, against which a roller is held, which is mounted on a toothed segment which engages in a gearwheel fastened to the lever on the same shaft.
  • Such a drive for the delivery sheet brake enables the suction cup to be lifted against the rear edge of the sheet that runs approximately horizontally into the delivery by the one drive member and at the same time the horizontal movement of the suction device is accelerated to approximately sheet speed by the other drive member from an initial position as short as possible Ways.
  • the suction device is lowered by the first drive element against the delivery stack and at the same time decelerated on the longest possible path through the other drive member before the suction device releases the sheet in the release position and returns to the starting position at a relatively high speed, the two drive members also interacting.
  • Both drive links are connected to the drive of the delivery chain of the boom via gear wheels and drive chains.
  • Such a drive for the vacuum cleaner is very complex and requires a precise coordination of the two drive elements with one another when the machine is set. Since the drive means for the suction device are positively connected to it and are consequently arranged on the slide for a possible format adjustment, an adjustment of the delivery sheet brake is delayed each time the sheet to be printed is changed. This is time-consuming and leads to greasing and inaccurate paper feed, especially at high printing speeds.
  • US Pat. No. 2,130,841 also shows a delivery sheet brake in which the vertical and horizontal movements of a suction device are achieved by separate drive means and, accordingly, complex transmission elements. This publication does not take into account the problems caused by changes in the format of the sheets to be printed.
  • an arc retardation device has become known from US Pat. No. 2,208,978.
  • a delivery stack is arranged below a conveyor chain on which the sheets picked up in gripper chains are transported.
  • the suction cups which are designed as cranked levers, swivel downward with a bow end gripped by the applied vacuum and release the bow in this position.
  • the disadvantage of this The device lies primarily in the fact that the achievable delay of an incoming sheet is limited by suction devices designed in this way.
  • the available deceleration path is too small and consists only of a downward movement of the opening of the suction cup by swiveling the shaft through a quarter turn.
  • the invention has for its object to provide a delivery sheet brake of the type mentioned, in which the sucker, while maintaining a high level of operational safety at high machine speeds, only requires drive means for a pivoting movement about a transverse axis.
  • the invention solves this problem by training with features according to the characterizing part of patent claim 1.
  • a suction device equipped with these features carries out the lifting and lowering movements automatically under the action of the vacuum and atmospheric pressure required for the operation of the suction device, so that only a swiveling movement of the suction device about a transverse axis parallel to the plane of the sheet is driven to obtain a horizontal movement component must become.
  • the drive means for this reciprocating pivoting movement can be made considerably simpler than known designs. These simpler drive means also facilitate the drive for the swiveling movements of the suction device directly from the printing press, as will be explained later using an exemplary embodiment.
  • the suction device is pulled back into the lowered position by negative pressure forces or by the external atmospheric pressure and also extends into a raised position by negative pressure forces.
  • the negative pressure forces withdrawing the suction device predominate, so that the suction device is lowered.
  • the suction cup is pulled down by the piston as soon as it has reached the arc in the take-over position, so that the suction opening no longer moves on a circular arc path, but on a somewhat longer elliptical path to the release position. This supports the effort to delay the sheet as long as possible before placing it on the stack in the delivery.
  • a further embodiment of the invention provides that the suction opening of the suction cup is formed on an elastically deformable bellows.
  • the sub-claims 3 to 5 relate to constructive training features on the suction device and the shaft carrying it.
  • the sheet 1 arriving from the printing press is transported by a conveyor chain 2 over the delivery stack 3.
  • Grippers 4 on the conveyor chain guided over deflections 5 and 6 grasp the sheet 1 on its front edge.
  • the sheet 1 is guided approximately horizontally into the delivery.
  • a sucker 7 engages the rear edge of the sheet 1, which is released at the same time or with little overlap by the grippers 4 of the conveyor chain 2, so that the sheet 1 is lowered onto the sheet stack and thereby by the movement the sucker 7 is delayed and finally placed gently on the sheet stack 3.
  • This delay of the arc should take place over the longest possible route, so that the suction cup is as short as possible from an initial position down to the Sheet speed must be accelerated so that he can take over the sheet without relative speed to the sheet and returns to the starting position at a low speed when he has released the sheet for storage on the delivery stack.
  • This movement is achieved by a drive member from a cam 8, which is rotatably mounted about a horizontal shaft in a carriage 9, which carries all parts for the format adjustment, and whose horizontal adjustment option is illustrated by the circles symbolically indicated on the underside of the carriage 9 .
  • the suction cup can also be pivoted about a further shaft 11 aligned with its axis parallel to the axis of rotation 10.
  • a roller 12 is pressed against the circumference of the cam plate 8 by spring force, for example by a tension spring 36, which roller is mounted on the free end of a short lever 13 of a four-link mechanism consisting of several levers, which forms the transmission mechanism.
  • Another lever 14 is fixed to the shaft 11. Its free end is connected in the joint 17a to one end of a lever 15, the other end in the joint 17b is connected to a lever 16 which has a rigid connection to the lever 13 which supports the bearing of the roller 12.
  • the levers 13 and 16 can also be formed in one piece. Both levers 13 and 16 have a common joint 17c, which is arranged on the carriage 9.
  • the lever 14 is also arranged on the slide 9 via the shaft 11 with its joint 17d.
  • a sprocket 18 is fixedly connected, which is driven by a drive chain 19 directly from a sprocket 20 of the machine drive.
  • the drive chain 19 passes through a chain store 21, the holds both chain runs 19a and 19b under uniform tension.
  • the chain wheel 18 on the cam disk 8 can be adjusted at a distance from the chain wheel 20, but the phase position between the two chain wheels 18 and 20 is retained. This enables format adjustments and speed changes of the machine without influencing the adjusted position and movement of the suction device 7 of the delivery sheet brake.
  • both chain runs 19a and 19b are guided over a plurality of deflection rollers 22 and 23, the chain runs 19a and 19b alternately partially wrapping around the rollers 22 and 23 respectively assigned to them.
  • the rollers 22 supporting the one chain center 19a are supported on a common carrier 24 and the rollers 23 supporting the other chain center 19b are supported on a common carrier 25, both of which are pressed apart by helical springs 26 and 27.
  • a parallel guide consisting of at least one scissor cross 33 with two tabs articulated in the middle 34, one end of which is articulated to one carrier and the opposite ends of which are articulated to the other carrier, keeps them parallel to one another.
  • the two helical springs 26 and 27 arranged at the ends of these supports press the supports 24 and 25 apart and thus always maintain a constant tension in the conveyor chain 19 and compensate for changes in distance between the two chain wheels 18 and 20 from one another without a phase shift.
  • the body of the nipple 7 is designed at one end as a piston 28 and is guided with this piston so as to be movable in a cylinder configuration of a housing 29 in the direction of the longitudinal axis of the piston.
  • the housing 29 is fastened on the shaft 11, which in the case of the example is designed as a hollow shaft.
  • the Suction opening of the suction device 7 is formed in an elastically deformable bellows 30, which is located at the free outer end of the suction device 7.
  • the piston carrying the suction cup has an end face 31 on the side facing away from the bellows 30 and an annular surface 32 on the other side, which extends around the body of the suction cup 7 in a likewise annular cylinder space 32a within the housing 29.
  • This cylinder chamber 32a is connected to the suction air system of the machine via a lateral connection 38 via the hollow shaft 11.
  • the cylinder spaces lying in front of the end face 31 and the annular face 32 are connected to one another by a channel 39 which acts as a throttle.
  • the suction device 7 falls into the lower position due to its own weight or due to the force of a spring 37 provided in the cylinder space 32a or with the assistance of the force of a spring.
  • the suction device moves out of the housing due to the pressure difference that now arises.
  • the suction opening is open, atmospheric pressure on the end face 31 and negative pressure on the ring face 32 are effective.
  • the suction device is moved out of the housing 29 by the negative pressure and the resulting pressure difference, possibly with the assistance of centrifugal forces, so that it detects the rear edge of the sheet 1 in the raised position in the transfer position shown in FIG. 4b.
  • the negative pressure also acts on the end face 31 and on the cross section of the shaft-shaped suction body, so that the suction device is pulled back into the lower position by the pressure difference which is established in the opposite direction, the suction device 7 corresponding to the illustration in FIG. 4d is delayed on its swivel path at the same time.
  • FIG. 4d shows the suction position immediately before the release of the sheet 1.
  • FIG. 4e shows the start of the suction return to the starting position, while FIG. 4f corresponds to FIG.
  • FIGS. 4a to 4f It can be seen from the illustration in FIGS. 4a to 4f that the suction opening of the suction device 7 moves on a loop-shaped path, the horizontal extent of which is substantially greater than the vertical extent.
  • the sheet can be sucked in and released in a manner known per se, for example by means of a rotary valve 40 driven by the machine in the vacuum line between the suction device 7 and a vacuum pump 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
EP89117719A 1988-10-25 1989-09-26 Auslagebogenbremse für Bogendruckmaschinen Expired - Lifetime EP0365848B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3836253 1988-10-25
DE3836253A DE3836253A1 (de) 1988-10-25 1988-10-25 Auslagebogenbremse fuer bogendruckmaschinen

Publications (3)

Publication Number Publication Date
EP0365848A2 EP0365848A2 (de) 1990-05-02
EP0365848A3 EP0365848A3 (en) 1990-11-28
EP0365848B1 true EP0365848B1 (de) 1993-12-15

Family

ID=6365838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117719A Expired - Lifetime EP0365848B1 (de) 1988-10-25 1989-09-26 Auslagebogenbremse für Bogendruckmaschinen

Country Status (5)

Country Link
US (1) US4991832A (zh)
EP (1) EP0365848B1 (zh)
JP (1) JPH02169461A (zh)
CN (1) CN1018815B (zh)
DE (2) DE3836253A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013770C2 (de) * 1990-04-28 1994-01-20 Mabeg Maschinenbau Gmbh Nachf Vorrichtung zum Zuführen von Bogen
DE4123399A1 (de) * 1991-07-15 1993-01-21 Windmoeller & Hoelscher Vorrichtung zum sammeln oder stapeln von flachen werkstuecken auf einem stapeltisch
DE19854844A1 (de) * 1997-12-24 1999-07-01 Heidelberger Druckmasch Ag Vorrichtung zur Saugluftsteuerung
DE19835529A1 (de) * 1998-08-06 2000-02-10 Bhs Corr Masch & Anlagenbau Bogen-Brems-Vorrichtung, insbesondere für Wellpappemaschinen
DE19947810B4 (de) * 1999-10-05 2005-01-27 Koenig & Bauer Ag Saugwalze in Bogenauslegern von Druckmaschinen
DE10348827A1 (de) 2002-10-31 2004-05-13 Heidelberger Druckmaschinen Ag Bogenverarbeitende Maschine mit einer Bogenbremse
DE102009008856B4 (de) * 2008-03-10 2018-02-22 Heidelberger Druckmaschinen Ag Bogenausleger
JP2015533364A (ja) * 2012-10-30 2015-11-24 ボブスト メックス ソシエテ アノニム 加工機械を通過するシート形態の平坦要素を保持するためのデバイス

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7617938U1 (zh) * 1900-01-01 Brauereimaschinenfabrik Max Kettner, 8000 Muenchen
USRE25283E (en) * 1962-11-06 Sheet delivery slowdown
DE322681C (de) * 1919-11-05 1920-07-06 Erich Edler Vorrichtung zum Spannen von Kistenbaendern u. dgl.
US2130841A (en) * 1936-06-09 1938-09-20 Cottrell C B & Sons Co Delivery mechanism for printing presses
US2208978A (en) * 1938-06-15 1940-07-23 Harris Seybold Potter Co Sheet delivery mechanism
US2247473A (en) * 1940-07-12 1941-07-01 Dexter Folder Co Sheet feeding apparatus
DE1005980B (de) * 1953-06-02 1957-04-11 Mabeg Maschb G M B H Saugduese fuer pneumatische Trenn- und Foerdereinrichtungen an Bogen verarbeitenden Maschinen, insbesondere Druckmaschinen
US2799499A (en) * 1953-12-11 1957-07-16 Miehle Goss Dexter Inc Pneumatic sheet separating and feeding apparatus
US3378256A (en) * 1966-03-22 1968-04-16 Harris Intertype Corp Sheet delivery slowdown
DE2035294A1 (de) * 1970-07-16 1972-01-20 Mabeg Maschinenbau Gmbh Nachf Trenn und Fördersauger für Bogenanleger
DE2263732C2 (de) * 1972-12-28 1974-09-26 Vits-Maschinenbau Gmbh, 4018 Langenfeld Kippsauger zum Anheben von Gegenständen mit flacher Oberfläche
DD138299B1 (de) * 1978-08-14 1981-07-29 Karl Marx Sauger fuer bogenanlager
DE2916251C2 (de) * 1979-04-21 1983-12-22 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Saugluftbeaufschlagte Hohlwalze für Druckmaschinen
DD143157B1 (de) * 1979-06-01 1982-12-15 Hans Zimmermann Bogenbremse in bogenauslegern von bogenverarbeitenden maschinen,insbesondere druckmaschinen
DD203034A1 (de) * 1981-11-16 1983-10-12 Karl Marx Nachgreifer fuer auslagen von bogendruckmaschinen

Also Published As

Publication number Publication date
DE58906439D1 (de) 1994-01-27
JPH02169461A (ja) 1990-06-29
CN1042126A (zh) 1990-05-16
US4991832A (en) 1991-02-12
CN1018815B (zh) 1992-10-28
DE3836253A1 (de) 1990-04-26
EP0365848A2 (de) 1990-05-02
EP0365848A3 (en) 1990-11-28

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