EP0453803A2 - Dispositif d'arrêt pour le buse de succion au tête à ventouses dans une imprimeuse - Google Patents

Dispositif d'arrêt pour le buse de succion au tête à ventouses dans une imprimeuse Download PDF

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Publication number
EP0453803A2
EP0453803A2 EP91104935A EP91104935A EP0453803A2 EP 0453803 A2 EP0453803 A2 EP 0453803A2 EP 91104935 A EP91104935 A EP 91104935A EP 91104935 A EP91104935 A EP 91104935A EP 0453803 A2 EP0453803 A2 EP 0453803A2
Authority
EP
European Patent Office
Prior art keywords
suction
suction nozzle
sheet
separating
vacuum cleaner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91104935A
Other languages
German (de)
English (en)
Other versions
EP0453803A3 (en
Inventor
Jochen Renner
Peter Sobotta
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 EP0453803A2 publication Critical patent/EP0453803A2/fr
Publication of EP0453803A3 publication Critical patent/EP0453803A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0825—Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • 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

Definitions

  • the invention relates to a device for locking the suction nozzle of suction pads on the suction head of a sheet feeder according to the preamble of claim 1.
  • Such a device is known from DE-PS 891 267. It is used when so-called jumping vacuums are used as separating suction devices and special drive means for the lifting movement of the separating suction device are dispensed with.
  • a lever pivotally mounted about a horizontal axis is provided on the suction head, said lever having a cam roller interacting with a control cam and at its free end a cross bar holding the separating nozzles.
  • the support is formed by rollers which are supported at the ends of the crossbar and which interact with flanges which extend horizontally at the suction nozzles of the separating suction devices.
  • the means for locking the suction nozzle of the separating suction device thus have a separate drive with its own control curve, through which the suction nozzle of the separating suction device is forcibly guided downward when the rear edge of the sheet conveyed into the feeder has left the area of the suction nozzle of the separating suction device.
  • a device for locking the suction nozzle of a vibrating separating suction device on the suction head of a sheet feeder in which a pawl in the form of a double lever is pivotally mounted on the separating suction device, one arm of which is an abutment for a nose on the suction nozzle has and the other arm cooperates with a stop which is arranged on a stack button.
  • the separating vacuum is as Jumping suction cup so that the suction nozzle jumps up in its rear swivel position after sucking the top sheet in the sheet stack, whereupon the abutment of the pawl engages behind the nose on the suction nozzle and holds it in the upper position until the sheet conveyed into the feeder also its rear edge has left the area of the now ventilated suction nozzle.
  • the stop arranged on the pushbutton releases the lock, so that the suction nozzle falls down.
  • the object of the invention is to provide a locking device for a separating suction device designed as a jumping suction device in the upper end position with a release of the suction nozzle which is automatically controlled in the work cycle of the machine.
  • the movement of the counter-bearing which causes the suction nozzle of the separating suction device to be locked is controlled directly by the drag suction movement by means of a few simple components and is therefore also dependent on the suction suction movement.
  • the thrust bearing is fastened to a component of the vacuum cleaner drive which is horizontally movably guided approximately parallel to the sheet plane in the stack of sheets and has a control edge which supports the support on the suction nozzle of the vacuum cleaner in the front range of motion of the vacuum cleaner shortly before reaching the front Releases the end position and locks again immediately after the start of the return movement.
  • the counter bearing consists of a pin fastened to the suction cup, one end of which forms the counter bearing interacting with the support.
  • a separating suction device 3 or more separating suction devices 3 are arranged next to one another and at a distance from one another transversely to the conveying direction of the sheets.
  • the separating suction device 3 is designed as a jumping suction device, so that the suction nozzle 4, which is guided vertically movably on the separating suction device 3, falls into the lower suction position due to its own weight and, if necessary, with the support of an internal spring, which is shown in FIG.
  • This lower end position of the suction nozzle 4 is fixed by a guide spring 5 shown in Figure 2, which secures the suction nozzle against rotation at the same time.
  • a support 6 is laterally provided for a counter bearing 7 for locking the suction nozzle 4 in the raised position.
  • the counter bearing 7 is guided to be horizontally movable and connected to the drive for the horizontal vacuum cleaner movement.
  • the drag vacuums are not shown in the drawing for reasons of clarity.
  • the horizontal movement of the suction cups takes place in the example via an eccentric drive from a rotating eccentric disc 8 which moves in a ring 9 which is articulated to a rocker arm 10, one end of which has a self-aligning bearing 11 on the suction head 1.
  • the other end of the rocker arm 10 is articulated to one end of a roller lever 12, which is guided with a roller 13 rotatably mounted at the other end in a horizontally arranged on the suction head 1 guide 14, so that a horizontal forward and reverse movement of the vacuum cleaner is achieved.
  • a locking pin forming the counter bearing 7 for the support 6 is connected, which extends horizontally and has a length such that the support 6 on the suction nozzle 4 is released when the teats are in the front Movement position and a new bow can be lifted from the sheet stack 2.
  • the free end of the locking pin 7 engages under the support 6 of the suction nozzle, so that it is locked in the upper position before the vacuum in the suction extractor 3 is released.
  • the position of the locking pin 7 is shown in Figure 1 with a dash-dotted line when the suction nozzle 4 of the vacuum cleaner 3 is released.
  • the position of the locking pin is shown in full line, in which the suction nozzle 4 is locked in the upper end position.
  • a single, centrically attached separating suction device 3 can also be provided with a double-spring suction device 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP19910104935 1990-04-21 1991-03-28 Locking device for the suction nozzle of a suction separating device for the feeding device of a printing machine Withdrawn EP0453803A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012778A DE4012778C1 (fr) 1990-04-21 1990-04-21
DE4012778 1990-04-21

Publications (2)

Publication Number Publication Date
EP0453803A2 true EP0453803A2 (fr) 1991-10-30
EP0453803A3 EP0453803A3 (en) 1993-08-11

Family

ID=6404831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910104935 Withdrawn EP0453803A3 (en) 1990-04-21 1991-03-28 Locking device for the suction nozzle of a suction separating device for the feeding device of a printing machine

Country Status (5)

Country Link
US (1) US5102113A (fr)
EP (1) EP0453803A3 (fr)
JP (1) JPH0790931B2 (fr)
CA (1) CA2037389C (fr)
DE (1) DE4012778C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453810A3 (fr) * 1990-04-21 1992-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour arrêter la buse de succion de séparateurs aspirants à la tête de succion d'un margeur de feuilles

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616598A1 (fr) * 1992-10-10 1994-09-28 Heidelberger Druckmaschinen Aktiengesellschaft Margeur pour machine de manipulation de feuilles de papier
US5803447A (en) * 1996-09-25 1998-09-08 D&K Custom Machine Design, Inc. Method and apparatus for feeding sheets
DE10009666A1 (de) 1999-03-19 2000-09-21 Heidelberger Druckmasch Ag Verfahren zum Betrieb eines Hubsaugers und Hubsauger
EP1428778A1 (fr) * 2002-12-10 2004-06-16 Fuji Photo Film Co., Ltd. Aspirateur pour plaque d'impression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891267C (de) * 1938-11-08 1953-09-28 Georg Dr-Ing Spiess Vorrichtung zum Abheben des obersten Bogens von einem Flach- oder Rundstapel mittelsschwingender Greiferduesen
US3007697A (en) * 1959-03-06 1961-11-07 Miller Printing Machinery Co Sheet feeder
US3938800A (en) * 1972-04-26 1976-02-17 Heidelberger Druckmaschinen Aktiengesellschaft Suction head for sheet feeding apparatus
US3931964A (en) * 1973-02-23 1976-01-13 Mabeg Maschinenbau Gmbh Sheet feeder apparatus
DD106018A1 (fr) * 1973-06-28 1974-05-20
US4438916A (en) * 1981-03-04 1984-03-27 Komori Printing Machinery Co., Ltd. Paper feeder
CS253506B1 (en) * 1985-10-10 1987-11-12 Jaroslav Jiruse Loading equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453810A3 (fr) * 1990-04-21 1992-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour arrêter la buse de succion de séparateurs aspirants à la tête de succion d'un margeur de feuilles

Also Published As

Publication number Publication date
EP0453803A3 (en) 1993-08-11
US5102113A (en) 1992-04-07
DE4012778C1 (fr) 1991-05-29
JPH0790931B2 (ja) 1995-10-04
CA2037389C (fr) 1994-11-01
JPH04223942A (ja) 1992-08-13
CA2037389A1 (fr) 1991-10-22

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