EP0273898A2 - Vorrichtung zum Entstapeln von Bögen - Google Patents

Vorrichtung zum Entstapeln von Bögen Download PDF

Info

Publication number: EP0273898A2
Authority: EP; European Patent Office
Prior art keywords: sheets; stack; grid; grill; section
Prior art date: 1986-12-30
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

Application number

EP87870209A

Other languages

English (en)

French (fr)

Other versions

EP0273898B1 (de

EP0273898A3 (en

Inventor

Guy Martin

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.)

Individual

Original Assignee

Individual

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.)

1986-12-30

Filing date

1987-12-29

Publication date

1988-07-06

1987-12-29 Application filed by Individual filed Critical Individual

1987-12-29 Priority to AT87870209T priority Critical patent/ATE102163T1/de

1988-07-06 Publication of EP0273898A2 publication Critical patent/EP0273898A2/de

1990-04-18 Publication of EP0273898A3 publication Critical patent/EP0273898A3/fr

1994-03-02 Application granted granted Critical

1994-03-02 Publication of EP0273898B1 publication Critical patent/EP0273898B1/de

2007-12-29 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- B65H3/12—Suction bands, belts, or tables moving relatively to the pile
- B65H3/124—Suction bands or belts
- B65H3/128—Suction bands or belts separating from the top of pile

Definitions

the present invention relates to a device for automatically and regularly picking up flat sheets, for example sheets of paper, on a stack of sheets feeding a machine in which flat sheets move one by one, for example an assembly machine.
suction devices are certainly efficient, but they are also bulky and expensive. In addition, these devices require a delicate adjustment of the suction and an anomaly (a double sheet) is detected only when the sheets have made a certain displacement, which often causes jams and rejects, and require intervention. operator. On the other hand, the rubber of the pacifiers dries out and must be replaced relatively frequently.
Friction devices use constant pressure maintained on the sheet by means of pads or casters.
the pressure adjustment is delicate, which only allows the treatment of a fairly limited range of sheets and does not allow the treatment of very thin sheets, for example delicate papers.
the known devices are not insensitive to variations in the parameters which characterize the sheets to be taken from a pile: physical dimensions, weights and size of the sheets; their humidity, their mutual adhesion, static electricity, these parameters also being randomly variable within the same stack of leaves of the same nature.
physical dimensions, weights and size of the sheets Considering in particular sheets of paper, it should be noted that the consumption of paper is changing in the direction of a constant increase in the use of delicate papers, for example carbonless papers. Friction machines currently known do not meet the working conditions in this area, and suction machines hardly meet them.
the subject of the invention is a sheet picking device which is capable of operating reliably and at high speed with sheets of different thickness, nature and size, considerably reducing scrap and operator intervention.
Another object of the invention is a simple device allowing easy integration into various modular type assemblies.
a device for picking up flat material sheets characterized by a movable grid mounted on a frame so as to be able to move over a certain length above the feed table in the direction of a ejection area, a suction means mounted above the grid section moving towards the ejection area, a rear skirt suspended from the frame to close the space between said grid section and the top of a stack of sheets on the feed table, and a front skirt suspended from the frame to close the space between said grid section and the ejection area, so that the suction created by said suction means causes air to flow into the sides of the stack of sheets such that the top sheet of the stack of sheets is vibrated and sucked against said grid section in order to move therewith ejection area.
the device according to the invention which includes neither pacifiers, nor any friction member, is of a simple and compact construction and ensures a very reliable sheet picking.
This device is suitable not only for handling sheets of paper, but also flat sheets of any material, such as for example sheets of textile or plastic. Other advantages of the invention will appear on reading the following description.
the sheet picking device is identified as a whole at 10.
This device is associated with a feed table 1 intended to receive a stack of sheets to be treated one by one and to an ejection area 2 intended for subsequent processing one by one of the sheets taken from the table 1.
the latter is mounted on a mechanism identified as a whole at 3 intended to move it vertically as the decreasing the height of the stack of sheets on the table 1 so as to maintain the top of the stack at a constant distance from the sheet pickup device.
the sheet pickup device 10 could be mounted to be itself moved relative to the table 1 which would be fixed.
the sheet picking device comprises a perforated grid 11 mounted on a frame of the assembly so as to be able to move by translation under the action of a drive mechanism comprising in particular the toothed wheels 12.
the grid 11 is closed on itself and it has a section 13 which can move a determined distance above the table 1 in the direction of the ejection area 2.
a suction means 14 constituted here by three fans, visible partly more particularly in FIG. 2.
the device is completed with a rear sealing skirt 15 suspended from the frame so as to hang and rest softly on top of a stack of sheets placed on the feed table 1, and a front sealing skirt 16 suspended from the frame so as to take above the ejection area 2.
These sealing skirts extend over the entire width of the device, transverse to the direction of movement of the grid section 13, and they serve to close on two sides the free space 17 between the grid section 13 and the table 1 during the operation of the device as described below.
the suction fans are turned on and these create a call for air in the free space 17, the air flows sucked in entering said space by the open lateral sides of the device as illustrated in Figure 7: the arrows marked F represent the air flow drawn in by a lateral side of the device. A similar air flow occurs on the other side.
the upper leaves of the stack 20 starts to vibrate and the top sheet (marked at 21 in Figure 5) bends, comes into contact with the grid 11 and is held there glued by suction through the grid.
This sheet is then driven by the grid 11 when the latter is set in motion and is guided towards the ejection area 2 ( Figure 6) while the next sheet 26 is sucked against the grid.
the sheets are thus sucked one by one and routed successively to the ejection area.
the device as described above can still include additional pneumatic means to operate the descaling of the stack of sheets in the case where sheets come to stick together and where the upper sheet cannot bend and be sucked against the grid in a given time.
additional means can be constituted by fan (s) of deramage or blower (s) of forced air mounted to direct momentary air jets on one or more sides of the stack of sheets.
Figures 1 and 3 show by way of example at 18 the nozzle of a forced air blower directing a lateral air jet.
the control of all the organs can be integrated into a general automatic control programming of the device under the supervision of detection elements controlled by a processor which can be incorporated into the machine.
detection elements 22, 23 and 24 intended for controlling the operation of the sheet picking device according to the invention. The connections of these detection cells with the control processor are symbolized by the letters P.
the detection element 22 serves to detect the presence or absence of sheets on the feed table 1
the detection element 23 serves to control the passage of the sheets one by one through the area of eject 2.
the detection element identified at 24 in FIG. 2 represents a cell or one of several detection cells associated cooperatively with one or more light sources such as the source identified at 25 to advantageously serve to detect an anomaly on the grid: presence of several sheets glued to each other, crumpled or folded sheet, sheet of different thickness or printing, etc.
the detection elements as well as other more usual control organs are advantageously controlled by a processor which constitutes the management organ of the entire device. Its programming gives rise to interactive slaves with a view, for example and without limitation, to controlling the starting, stopping and speed of the motors of the fans 14, of controlling and modulating the effects of the lateral air nozzles 18, to control the translation of the grid 11, to maintain the relative distance between the lower plane 13 of the grid and the top of the stack of sheets 20 on the table 1 as a function of the detection information permanently supplied by the elements of aforementioned detection.
This programmed arrangement makes it possible to continuously control the operation of the sheet picking device and to check in particular the nature of each sheet taken from the top of the stack so as to immediately detect any anomaly during transfer to the area of eject and automatically stop the device to remedy the anomaly, then restart the machine.
the reliability and efficiency of the automation are improved in an optimal manner.
the device according to the invention makes it possible to take up flat sheets of varied material: not only sheets of paper, even fine and delicate papers, but also sheets of textile and plastic material for example.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Sheets, Magazines, And Separation Thereof (AREA)
Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Control And Other Processes For Unpacking Of Materials (AREA)
Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

EP87870209A 1986-12-30 1987-12-29 Vorrichtung zum Entstapeln von Bögen Expired - Lifetime EP0273898B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87870209T ATE102163T1 (de)	1986-12-30	1987-12-29	Vorrichtung zum entstapeln von boegen.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
LU86728A LU86728A1 (fr)	1986-12-30	1986-12-30	Dispositif de prise de feuilles planes
LU86728		1986-12-30

Publications (3)

Publication Number	Publication Date
EP0273898A2 true EP0273898A2 (de)	1988-07-06
EP0273898A3 EP0273898A3 (en)	1990-04-18
EP0273898B1 EP0273898B1 (de)	1994-03-02

Family

ID=19730846

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87870209A Expired - Lifetime EP0273898B1 (de)	1986-12-30	1987-12-29	Vorrichtung zum Entstapeln von Bögen

Country Status (8)

Country	Link
US (1)	US4787618A (de)
EP (1)	EP0273898B1 (de)
JP (1)	JPS63176237A (de)
AT (1)	ATE102163T1 (de)
CA (1)	CA1301789C (de)
DE (1)	DE3789217T2 (de)
ES (1)	ES2051776T3 (de)
LU (1)	LU86728A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1990011240A1 (fr) *	1989-03-17	1990-10-04	Guy Martin	Dispositif de prise de feuilles planes avec deramage a flux d'air turbulent

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT411990B (de) *	1999-09-08	2004-08-26	Waagner Biro Binder Ag	Leersackvereinzelung
NL1013218C2 (nl)	1999-10-05	2001-04-06	Ocu Technologies B V	Inrichting voor het ÚÚn voor ÚÚn afvoeren van vellen vanaf de bovenkant van een stapel vellen.
JP4514662B2 (ja) *	2005-07-07	2010-07-28	デュプロ精工株式会社	給紙吸引装置
GB201001814D0 (en) *	2010-02-04	2010-03-24	Vivid Laminating Technologies	Feed mechanism for laminating machine
US9079733B2 (en) *	2010-05-07	2015-07-14	Bdt Media Automation Gmbh	Vortex suction separator device
JP6210376B2 (ja) *	2013-04-22	2017-10-11	株式会社リコー	シート搬送装置及び画像形成装置
GB2516649B (en) *	2013-07-29	2017-05-24	Altevo Ltd	A method and apparatus for lifting and depositing gloves
ITVI20130238A1 (it) *	2013-09-30	2015-03-31	Tosingraf S R L	Gruppo di alimentazione di un foglio e macchina per la lavorazione di fogli comprendente tale gruppo di alimentazione

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1245390B (de) *	1965-12-30	1967-07-27	Telefunken Patent	Vorrichtung zum Vereinzeln von flachen Sendungen
US4108302A (en) *	1974-03-27	1978-08-22	J. Bobst & Fils, S.A.	Suction conveyor
EP0038522A1 (de) *	1980-04-21	1981-10-28	EASTMAN KODAK COMPANY (a New Jersey corporation)	Vakuumdokumentenzuführung
US4469320A (en) *	1982-05-03	1984-09-04	Xerox Corporation	Dual mode stack sensor
US4627605A (en) *	1985-11-06	1986-12-09	Xerox Corporation	Front air knife top vacuum corrugation feeder

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS523472Y2 (de) *	1971-06-11	1977-01-25
US3774907A (en) *	1971-09-16	1973-11-27	Xerox Corp	Vacuum sheet stripping apparatus
GB1374376A (en) *	1972-06-01	1974-11-20	Burroughs Corp	Device for feeding documents one at-a-time from a stack
JPS5354030A (en) *	1976-10-26	1978-05-17	Dacom Inc	Sheet feeding device
JPS5418578A (en) *	1977-07-11	1979-02-10	Ricoh Co Ltd	Pneumatic sheet feeding apparatus
JPS56149927A (en) *	1980-04-18	1981-11-20	Tamura Electric Works Ltd	Automatic delivering device for sheet of paper, card or the like
JPS57184034A (en) *	1981-05-08	1982-11-12	Canon Inc	Air-suction feeder
JPS6052429A (ja) *	1983-08-31	1985-03-25	Fuji Xerox Co Ltd	給紙装置
JPS60232335A (ja) *	1984-04-27	1985-11-19	Fuji Xerox Co Ltd	給紙装置
US4699369A (en) *	1986-06-27	1987-10-13	Xerox Corporation	Front air knife improvement for a top vacuum corrugation feeder

1986
- 1986-12-30 LU LU86728A patent/LU86728A1/fr unknown
1987
- 1987-12-23 CA CA000555294A patent/CA1301789C/en not_active Expired - Lifetime
- 1987-12-25 JP JP62327558A patent/JPS63176237A/ja active Pending
- 1987-12-28 US US07/138,827 patent/US4787618A/en not_active Expired - Fee Related
- 1987-12-29 EP EP87870209A patent/EP0273898B1/de not_active Expired - Lifetime
- 1987-12-29 ES ES87870209T patent/ES2051776T3/es not_active Expired - Lifetime
- 1987-12-29 AT AT87870209T patent/ATE102163T1/de not_active IP Right Cessation
- 1987-12-29 DE DE3789217T patent/DE3789217T2/de not_active Expired - Fee Related

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1245390B (de) *	1965-12-30	1967-07-27	Telefunken Patent	Vorrichtung zum Vereinzeln von flachen Sendungen
US4108302A (en) *	1974-03-27	1978-08-22	J. Bobst & Fils, S.A.	Suction conveyor
EP0038522A1 (de) *	1980-04-21	1981-10-28	EASTMAN KODAK COMPANY (a New Jersey corporation)	Vakuumdokumentenzuführung
US4469320A (en) *	1982-05-03	1984-09-04	Xerox Corporation	Dual mode stack sensor
US4627605A (en) *	1985-11-06	1986-12-09	Xerox Corporation	Front air knife top vacuum corrugation feeder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1990011240A1 (fr) *	1989-03-17	1990-10-04	Guy Martin	Dispositif de prise de feuilles planes avec deramage a flux d'air turbulent
EP0387476B1 (de) *	1989-03-17	1993-12-29	Guy Martin	Vereinzelungsvorrichtung für Bögen mittels einer Turbulenzblasdüse
US5328165A (en) *	1989-03-17	1994-07-12	Guy Martin	Device for the take-up of plane sheets with peel-off by turbulent air flow

Also Published As

Publication number	Publication date
ES2051776T3 (es)	1994-07-01
DE3789217T2 (de)	1994-09-22
EP0273898B1 (de)	1994-03-02
LU86728A1 (fr)	1988-07-14
ATE102163T1 (de)	1994-03-15
JPS63176237A (ja)	1988-07-20
EP0273898A3 (en)	1990-04-18
US4787618A (en)	1988-11-29
CA1301789C (en)	1992-05-26
DE3789217D1 (de)	1994-04-07

Publication	Publication Date	Title
CA2106906C (fr)	2004-04-06	Depileur d'articles plats incluant un dispositif de retaquage
EP0387476B1 (de)	1993-12-29	Vereinzelungsvorrichtung für Bögen mittels einer Turbulenzblasdüse
EP0273898B1 (de)	1994-03-02	Vorrichtung zum Entstapeln von Bögen
FR2528994A1 (fr)	1983-12-23	Positionneur de recepteur de jet de fluide, pour un appareil a decouper des matieres en feuilles au moyen de jets de fluide de coupe
FR2775676A1 (fr)	1999-09-10	Appareil d'empilement de feuilles, transporteur et courroie aspirante
FR2464444A1 (fr)	1981-03-06	Dispositif pour le traitement thermique a plat de pieces de tissu en forme de bande
FR2502981A1 (fr)	1982-10-08	Destructeur de microfilms
EP0619259B1 (de)	1997-06-04	Vorrichtung zum Zusammentragen von Bögen mit übereinander angeordneten Fächern.
EP0525582B1 (de)	1995-08-16	Verfahren zum Vereinzeln von insbesondere offenen Poststücken und Verfahren zum Herstellen von dieser Vorrichtung
FR2662140A1 (fr)	1991-11-22	Dispositif d'alimentation en feuilles.
EP3467179B1 (de)	2023-02-01	Umkehrmechanismus
EP0645330A1 (de)	1995-03-29	Greifvorrichtung für flache Gegenstände und Entstapelvorrichtung mit einer solchen Greifvorrichtung
FR2518495A1 (fr)	1983-06-24	Dispositif d'emballage dans des sacs, notamment pour ensachage de jambons
EP1090859B1 (de)	2003-05-21	Vorrichtung zum Abziehen jeweils eines Bogens von der Oberseite eines Bogenstapels
EP0507661B1 (de)	1994-06-08	Vorrichtung zum Herausnehmen flacher Gegenstände aus einem Stapel solcher Gegenstände, insbesondere für Briefumschläge
FR2656571A1 (fr)	1991-07-05	Dispositif pour le guidage secondaire d'un support d'impression sur une machine a dessiner.
FR2763926A1 (fr)	1998-12-04	Appareil de traitement posterieur de feuilles imprimees
FR2640947A1 (de)	1990-06-29
FR2657298A1 (fr)	1991-07-26	Dispositif pour assurer le maintien d'un support d'impression sur un plateau de guidage dans la zone d'ecriture d'une machine a dessiner.
GB2247450A (en)	1992-03-04	Apparatus for separating signatures from a stack
EP0087364A1 (de)	1983-08-31	Mit einem Saugkasten versehener Anleger
LU87818A1 (fr)	1991-05-07	Appareil de collage d'etiquettes
EP0658087B1 (de)	1997-01-08	Anlage zum zuschneiden von blattförmigem gut
JP2010239938A (ja)	2010-10-28	排稈カッターの切断排出装置
FR2928361A1 (fr)	2009-09-11	Machine de traitement de documents telle qu'un ouvre-enveloppes

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