EP0803457A2 - Dispositif pour séparer et soulever la feuille de dessus d'une pile de feuilles - Google Patents

Dispositif pour séparer et soulever la feuille de dessus d'une pile de feuilles Download PDF

Info

Publication number: EP0803457A2
Authority: EP; European Patent Office
Prior art keywords: sheet; stack; stripping element; sheet stack; carrier
Prior art date: 1996-04-24
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

EP97106151A

Other languages

German (de)

English (en)

Other versions

EP0803457B1 (fr

EP0803457A3 (fr

Inventor

Peter Eilitz

Herbert Herrmann

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.)

Manroland AG

Original Assignee

MAN Roland 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.)

1996-04-24

Filing date

1997-04-15

Publication date

1997-10-29

1997-04-15 Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG

1997-10-29 Publication of EP0803457A2 publication Critical patent/EP0803457A2/fr

1998-04-01 Publication of EP0803457A3 publication Critical patent/EP0803457A3/fr

2000-01-19 Application granted granted Critical

2000-01-19 Publication of EP0803457B1 publication Critical patent/EP0803457B1/fr

2017-04-15 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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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
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/56—Elements, e.g. scrapers, fingers, needles, brushes, acting on separated article or on edge of the pile

Definitions

the invention relates to a device for separating and lifting the uppermost sheet, in particular the uppermost sheet of metal, from a sheet stack, with a sheet detection device for the cyclical detection and lifting of the uppermost sheet, as well as one acting on the rear edge of the uppermost sheet raised by a certain amount
Scraper device which has a scraper element with a sliding ramp, which is raised by the trailing edge of the top sheet when it is raised against a spring force from a rest position near the sheet stack, projecting a certain amount beyond the sheet stack, into a deflected action spaced apart from the sheet stack until the trailing edge snaps over the stripping element can be moved approximately horizontally.
the stripping element is arranged on a pivotable lever which is spring-loaded in the sheet conveying direction and has a stop with which it is in contact with the back of the sheet stack in the undeflected state.
This device has the disadvantage that after each stripping and conveying operation of the raised top sheet the lever is moved with its stop by the spring force with momentum against the back of the sheet stack.
the object of the invention is to provide a device of the type mentioned, which operates quietly and gently.
This object is achieved in that a carrier is in contact with the sheet stack in the upper rear area, the stripping element being movably guided on the carrier between its rest position and deflection position and being spring-loaded in its rest position.
the small moving masses also mean that the device can be constructed from light components of small size, since no greater forces have to be absorbed.
the carrier can be spring-loaded against the back of the stack.
the carrier can be designed as a lever which can be pivoted at one end approximately above the rear end region of the sheet stack about a pivot axis directed transversely to the sheet conveying direction and with its free other end in contact with the sheet stack.
a simple device with few components of small size is achieved if the stripping element is arranged in a guide recess of the carrier directed in the sheet conveying direction and open towards the sheet stack and, in its rest position, protrudes from the guide recess by a certain amount in the sheet conveying direction.
the stripping element can be acted upon in a simple embodiment by a compression spring arranged in the guide recess in the arc conveying direction.
the pretension of the compression spring is adjustable, this can be done in a simple manner by the fact that the compression spring is supported with its end facing away from the stripping element on an adjusting screw which can be adjusted in the direction of sheet conveyance, so that, depending on the quality of the sheet to be conveyed, the optimum at which Separation force to be overcome can be set.
the compression spring is a helical spring.
the stripping element is a ball, largely no frictional forces and no canting forces have to be overcome in addition to the spring forces when deflecting the stripping element, which would make the level of the forces actually to be overcome indeterminable.
this design allows the size of the stripping element to be kept optimally small and the guide recess to be produced simply as a bore.
the device shown has a carrier 1 which extends approximately vertically in the upper rear region of a sheet stack 2 and, at its upper region (not shown), can be pivoted about a pivot axis directed transversely to the sheet conveying direction 3 at approximately the rear end region of the sheet stack 2.
the carrier 1 is designed as a scraper block 4, which is held in contact with the side in the sheet conveying direction 3 at the upper rear area of the sheet stack 2 by a compression spring 5 of high force.
the stripping block 4 is provided at its lower end with a bevel 6 directed away from the sheet stack 2.
a continuous guide recess 7 is formed, which is directed approximately in the sheet conveying direction 3 and is a threaded bore 8 in its rear area in the sheet conveying direction 3 and a bore 9 with a smooth wall in its front area in the sheet conveying direction 3.
the mouth opening of the bore 10 has a cross section which is reduced in comparison to the diameter of the bore 9 and which forms a stop for a ball 11 arranged in the bore 9, approximately the same diameter as the bore 9.
the ball 11 which forms a stripping element for the raised sheets, can only protrude from the bore 9 by about a third of its diameter in the sheet conveying direction 3.
a grub screw is screwed into the threaded bore 8 as an adjusting screw 12, on the inner end face of which a compression spring designed as a helical spring 13 is supported with one end of considerably less force than the compression spring 5.
the other end of the helical spring 13 acts on the ball 11 in the sheet conveying direction 3.
a separating suction device 14 Arranged above the rear end of the sheet stack 2 is a separating suction device 14 which can be moved up and down approximately at the rate of a sheet and through which the uppermost sheet 15 of the sheet stack 2 can be detected and raised.
FIG. 1 A sheet 15 raised in this way until the ball 11 is reached is shown in FIG. 1. Since the ball projects by the amount with which it looks out of its guide recess 7 in the sheet conveying direction 3 over the sheet stack 2, the sheet 15 is acted upon by the rear edge 16 when the sheet 15 is raised further , whose surface acts as a sliding ramp, pressed into the guide recess 12 against the force of the helical spring 13. This is shown in Figure 2.
the upper sheet 15, on the other hand, is raised further and can be fed to a further conveying device.
the device according to the invention is particularly well suited for sheets of higher rigidity and metal sheets.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Sheets, Magazines, And Separation Thereof (AREA)
Pile Receivers (AREA)

EP97106151A 1996-04-24 1997-04-15 Dispositif pour séparer et soulever la feuille de dessus d'une pile de feuilles Expired - Lifetime EP0803457B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19616333A DE19616333C2 (de)	1996-04-24	1996-04-24	Vorrichtung zum Trennen und Anheben des obersten Bogens von einem Bogenstapel
DE19616333		1996-04-24

Publications (3)

Publication Number	Publication Date
EP0803457A2 true EP0803457A2 (fr)	1997-10-29
EP0803457A3 EP0803457A3 (fr)	1998-04-01
EP0803457B1 EP0803457B1 (fr)	2000-01-19

Family

ID=7792286

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP97106151A Expired - Lifetime EP0803457B1 (fr)	1996-04-24	1997-04-15	Dispositif pour séparer et soulever la feuille de dessus d'une pile de feuilles

Country Status (3)

Country	Link
EP (1)	EP0803457B1 (fr)
JP (1)	JP2891958B2 (fr)
DE (2)	DE19616333C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP6701028B2 (ja) *	2016-08-10	2020-05-27	テクノエイト株式会社	シート材分離装置
JP7132199B2 (ja) *	2019-09-30	2022-09-06	フタバ産業株式会社	板材搬送システム
DE102022107710A1 (de)	2022-03-31	2023-10-05	Kolbus Gmbh & Co. Kg	Vorrichtung zum Vereinzeln eines zuoberst liegenden Bogens

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE576117C (de) *	1931-09-20	1933-05-08	Praktische Maschinen G M B H	Vorrichtung zum Herstellen von Einbanddecken fuer Buecher, Notizbuecher o. dgl.
DE585514C (de) *	1932-11-06	1933-10-04	Praktische Maschinen G M B H	Vorrichtung zum Herstellen von Einbanddecken fuer Buecher, Notizbuecher o. dgl.
US2722416A (en) *	1950-05-10	1955-11-01	Backhouse Headley Townsend	Separation of sheets of paper or the like from the top of a pile
DE923132C (de) *	1952-06-29	1955-02-03	Mabeg Maschb G M B H	Vorrichtung zum Vereinzeln und zum Zufuehren von Bogen aus Papier usw. an Druck-, Lackier- und Falzmaschinen
JPS55140444A (en) *	1979-04-18	1980-11-01	Kingo Ishikawa	Auxiliary stripping device for sheet paper
US5183242A (en) *	1991-08-30	1993-02-02	D&K Custom Machine Design, Inc.	Method and apparatus for feeding sheets
DE4344474C1 (de) *	1993-12-21	1995-01-05	Anker Maschbau	Etikettenmagazin für Etikettiermaschinen

1996
- 1996-04-24 DE DE19616333A patent/DE19616333C2/de not_active Expired - Fee Related
1997
- 1997-04-15 DE DE59701024T patent/DE59701024D1/de not_active Expired - Fee Related
- 1997-04-15 EP EP97106151A patent/EP0803457B1/fr not_active Expired - Lifetime
- 1997-04-24 JP JP9106926A patent/JP2891958B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE59701024D1 (de)	2000-02-24
EP0803457B1 (fr)	2000-01-19
DE19616333C2 (de)	2001-07-12
DE19616333A1 (de)	1997-11-06
JP2891958B2 (ja)	1999-05-17
JPH1035929A (ja)	1998-02-10
EP0803457A3 (fr)	1998-04-01

Legal Events

Date	Code	Title	Description
1997-09-12	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1997-10-29	17P	Request for examination filed	Effective date: 19970506
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1999-05-22	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1999-07-13	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
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1999-09-30	ITF	It: translation for a ep patent filed
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2000-02-09	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 20000119
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