EP0770571A2 - Dispositif pour le guidage transitoire de feuilles se succédant - Google Patents

Dispositif pour le guidage transitoire de feuilles se succédant Download PDF

Info

Publication number: EP0770571A2
Authority: EP; European Patent Office
Prior art keywords: guide element; suction opening; suction; sheet; sheets
Prior art date: 1995-10-25
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

EP96114866A

Other languages

German (de)

English (en)

Other versions

EP0770571A3 (fr

EP0770571B1 (fr

Inventor

Sven Kerpe

Frank Gunschera

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.)

1995-10-25

Filing date

1996-09-17

Publication date

1997-05-02

1996-09-17 Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG

1997-05-02 Publication of EP0770571A2 publication Critical patent/EP0770571A2/fr

1998-01-07 Publication of EP0770571A3 publication Critical patent/EP0770571A3/fr

2001-11-28 Application granted granted Critical

2001-11-28 Publication of EP0770571B1 publication Critical patent/EP0770571B1/fr

2016-09-17 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/68—Reducing the speed of articles as they advance
- B65H29/686—Pneumatic brakes

Definitions

the invention relates to a device for temporarily guiding successive sheets along a mutually opposite side edge of a respective guide surface spanned by means of an operationally circumferential guide element with at least one suction opening with an orifice cross-section that can be temporarily covered by a respective sheet and under a suction effect exerted on a respective one of the sheets of a vacuum which is periodically present in the at least one suction opening.
Such a device is known, for example, from the document DE 40 17 931 A1 and is used thereafter to brake sheets released from a chain delivery system of a printing press from machine speed to a lower speed.
the circumferential guide element is designed in the form of a perforated suction belt and is driven by a special type of positive connection between the belt and a drive wheel.
the object of the invention is to design a generic device in such a way that, regardless of the choice of a material for the guide element, good guide properties are obtained even at high rotational speeds and with thin sheets.
the mouth cross section of the at least one suction opening lies in a groove formed on the guide element and oriented at least essentially in the circumferential direction of the guide element.
Disruptive influences are, for example, pressure differences occurring in the area of the guide element between the one and the other surface of the sheet due to a high rotational speed of the guide element, and in the case of use of the device as a sheet brake placed in connection with a chain delivery system of a printing press, which is caused by the Gripper devices of the chain boom system air masses pushed in front of them, which act on a sheet released by the gripper devices in the sense of rolling up from the rear edge thereof.
the inventive design of a generic device also has an advantageous effect on the guiding properties of the guide element even when guiding thicker sheets.
the reason for this is a surface area of the elbow which is enlarged compared to the mouth cross section and in which the suction effect of the negative pressure present in a suction opening comes into play.
the guide element is designed in the manner of an endless belt of a belt conveyor.
the guide element is designed in the form of a rotating body that rotates operationally about an axis of rotation with a cylindrical lateral surface concentric to the axis of rotation, and the at least one suction opening penetrates the lateral surface and forms, together with further corresponding suction openings, at least one extending over the circumference of the rotating body Row of suction openings.
the successive sheets 1 are temporarily guided, in each case by contacting an underside of the sheets 1, with a guide element 2 designed in the manner of an endless circulating belt of a belt conveyor.
the belt-shaped guide element 2 wraps around a non-illustrated drive shaft of a rotary drive connected first deflection roller 3 and an axially parallel, freely rotatable second deflection roller 4 and rotates in the direction of the arrow which is attached in FIG. 1 to the lower run of the guide element 2.
a suction chamber 5 arranged below the upper run of the guide element 2 is a suction chamber 5 connected to a vacuum source (not shown), by means of which a vacuum can be generated in the region of the inside of the upper run of the guide element 2.
the guide element 2 is broken by means of suction openings 6, which are distributed over its length and are essentially immediately successive, so that a vacuum exists in a respective subset of the suction openings 6, while the suction openings of this subset move operationally over the suction chamber 5.
suction openings 6 are distributed over the length of the guide element 2 are shown.
the band-shaped guide element 2 also has on its outer side a rib 7 which extends over its entire length and is broken through by the suction openings 6.
the rib 7 is provided on its outside facing away from the inside of the guide element 2 over the entire length of the rib 7 with a groove 8 oriented in the circumferential direction of the guide element 2, in which the mouth cross sections of the suction openings 6 facing this outside lie.
Means for guiding the sheet 1 to the guide element 2 and for positioning it directly above it do not form part of the direct object of the invention.
the positioning is carried out in such a way that the side edges of the sheets 1 are oriented in the direction of rotation of the guide element 2.
a possible field of application for a device according to the invention is, for example, its use as a sheet brake between a chain delivery system and a storage stack of a sheet printing machine.
the chain boom system guides a respective sheet 1 in accordance with the direction of the arrow indicated on sheet 1 in FIG. 1 into a position immediately above the guide element 2 and then releases it in such a way that in particular in a trailing area of the respective sheet 1 due to the Suction of the negative pressure present in the suction openings 6 causes the underside of the arch to rest against the guide element 2, with temporary covering of the mouth cross-sections of the suction openings 6 successively opposite the circumferential direction of the guide element 2 due to the circumference of the underside of the arch.
this bead 16 in sheet 1 made of thin paper stabilizes the position of the sheets 1 with respect to a direction transverse to the direction of rotation of the guide element 2 and thus counteracts a displacement of the sheets 1 in the direction mentioned. Furthermore, there is a tendency for sheet 1 made of thin paper Increasing the suction effect exerted on the sheet 1 by the negative pressure present in the suction openings 6 in the event of a compressive force acting on the underside of the sheet as a result of differences in the static pressures in the vicinity of the sheet 1.
a further beneficial influence on the guiding property of the guide element 2 is that the bead 16 counteracts a turning over of the trailing edge of the sheet 1 under the action of air flow fields, which are triggered, for example, by rotating gripper devices of the chain boom system will.
the causes counteracting the turning are on the one hand in the already described tendency of increasing the holding force in the case of an increased static pressure on the underside of the sheet and on the other hand in the stiffening effect of the bead 16, which bends it around a bending edge running transverse to the groove 8 difficult.
FIG. 1 can in particular be modified to a second variant in that a guide element 2 'shown in sections in FIG. 2 is provided, which corresponds to the guide element 2 according to FIG. 1 insofar as it is also in the manner of an endless rotating Belt of a belt conveyor is formed and in so far from 1 deviates when in particular only a single suction opening 6 is provided.
a guide element 2 'shown in sections in FIG. 2 is provided, which corresponds to the guide element 2 according to FIG. 1 insofar as it is also in the manner of an endless rotating Belt of a belt conveyor is formed and in so far from 1 deviates when in particular only a single suction opening 6 is provided.
a second variant designed in this way can also be used as a sheet brake in the context set out above, and in this way, when the guide element 2 'rotates in time with the successive sheets with a suitable phase position to the chain delivery system, in particular the exclusive detection of one trailing edge of the sheet 1 immediately adjacent Area of the underside of the sheet 1 by means of the guide element 2 '.
the only suction opening 6 is provided within a cam 9, which is provided on the guide element 2 ′ designed in the manner of a belt of a belt conveyor and rises above the outer contour of the otherwise flat belt.
this cam 9 has a cross section corresponding to the rib 7 according to FIG. 1 and thus has a notch corresponding to the groove 8 according to FIG. 1, which in this case forms the bead 16 in the arch 1 below that in the suction opening 6 prevailing negative pressure causes.
the groove 8 and the notch 10 are incorporated in the examples in FIGS. 1 and 2 in the form of a prism in the rib 7 and in the cam 9. However, this form is not mandatory.
the cross sections of the groove 8 and the cam 9 can, for example, also have a rounded or a rectangular profile.
the guide element 2 'shown in sections in FIG. 2 has, in one embodiment, a plurality of cams 9 with a respective suction opening 6 made therein.
the rotational speed of the guide element 2 'designed as a band is selected so that with a each of the successive cams 9 a respective one of the successive sheets 1 can be detected.
the guide element 2 ′′ is designed in the form of a rotating body which, during operation, rotates about an axis of rotation 11 and has a lateral surface 12 which is concentric with the axis of rotation 11.
This lateral surface 12 is penetrated by suction openings 6 ', which in their entirety form a row of suction openings which extends over the circumference of the rotating body and consists essentially of immediately successive suction openings 6' lined up along a circumferential line.
the guide element 2 ′′ designed as a rotating body consists of a disk 13 and a ring 14, which is drawn around its circumference and is preferably made of low-wear material and which is penetrated by the suction openings 6 ′.
the disc 13 are distributed over its circumference in a radially outer diameter area radially outwardly and towards an end face of the disc 13 open slots 15, each of which communicates with a suction opening 6 '.
an upper segment of the disk 13, which detects the radial extension of the slots 15, is not shown on the front side of the disk 13 which is penetrated by the slots 15, connected to a vacuum source connected suction chamber.
the disk 13 is connected in a rotationally fixed manner to a drive shaft of a rotary drive (not shown).
the suction openings 6 ' open out radially into a groove 8' in the ring 14 which extends over the circumference of the ring 14 extends.
a plurality of suction openings 6, 6' or rows of suction openings can also be arranged in a direction transverse to the circumferential direction, which are then divided into a corresponding number of grooves 8, 8 'or notches 10 open.
a strict alignment of the grooves 8, 8 'or the notches 10 in the circumferential direction of the guide element 2, 2', 2 '' is not mandatory.
the grooves 8, 8 ' can in particular, for example, have a slightly sinusoidally curved course, and the notches 10 can be arranged to a certain extent obliquely to the direction of rotation.
a plurality of devices of the present type are preferably used for guiding sheet 1, depending in particular on their format, these devices being arranged at mutual distances transverse to the direction of rotation and with the same orientation of the direction of rotation of the respective guide element 2, 2 ', 2' '.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Delivering By Means Of Belts And Rollers (AREA)
Advancing Webs (AREA)
Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

EP96114866A 1995-10-25 1996-09-17 Dispositif pour le guidage transitoire de feuilles se succédant Expired - Lifetime EP0770571B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19539663		1995-10-25
DE19539663A DE19539663A1 (de)	1995-10-25	1995-10-25	Vorrichtung zum vorübergehenden Führen aufeinanderfolgender Bogen

Publications (3)

Publication Number	Publication Date
EP0770571A2 true EP0770571A2 (fr)	1997-05-02
EP0770571A3 EP0770571A3 (fr)	1998-01-07
EP0770571B1 EP0770571B1 (fr)	2001-11-28

Family

ID=7775710

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP96114866A Expired - Lifetime EP0770571B1 (fr)	1995-10-25	1996-09-17	Dispositif pour le guidage transitoire de feuilles se succédant

Country Status (5)

Country	Link
US (1)	US5829740A (fr)
EP (1)	EP0770571B1 (fr)
JP (1)	JPH09132338A (fr)
CN (1)	CN1150574A (fr)
DE (2)	DE19539663A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5967507A (en) *	1997-04-14	1999-10-19	Xerox Corporation	Automatic document handler having non-relative motion vacuum corrugating device
DE19835003A1 (de) *	1998-08-03	2000-02-10	Heidelberger Druckmasch Ag	Ausleger für eine Druckmaschine
DE10010970A1 (de)	1999-03-26	2000-10-12	Heidelberger Druckmasch Ag	Saugbandförderer für eine Bogen verarbeitende Maschine
DE102016206693B4 (de) *	2016-04-20	2024-03-21	Koenig & Bauer Ag	Bremsstation für eine Bogenbremse in der Auslage einer bogenverarbeitenden Maschine und Transportband
DE102016206691A1 (de)	2016-04-20	2017-10-26	Koenig & Bauer Ag	Transportband und Bogenbremse in der Auslage einer bogenverarbeitenden Maschine
DE102016109304A1 (de) *	2016-05-20	2017-11-23	manroland sheetfed GmbH	Transportband einer Bogenfördereinrichtung
EP3254992B1 (fr) *	2016-06-10	2023-08-02	Heinrich Georg GmbH Maschinenfabrik	Dispositif de transport pour le transport suspendu de marchandises a transporter au moyen de depression
US10189661B1 (en) *	2017-08-15	2019-01-29	Core Flow Ltd.	Vacuum wheel with separate contact and vacuum surfaces
CN110356098A (zh) *	2019-07-09	2019-10-22	广东拓品智能机械科技有限公司	一种印刷用陶瓷轮

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1627966A (en) *	1920-04-17	1927-05-10	Arkell Safety Bag Co	Apparatus for operating on paper and other fabrics
DE1119167B (de) *	1960-02-23	1961-12-07	Fritz Ungerer Dipl Ing	Anlage zum Stapeln von Blechen
US3889801A (en) *	1972-10-26	1975-06-17	Bell & Howell Co	Vacuum conveyor belt with air bearing
US3942788A (en) *	1974-06-13	1976-03-09	Bell & Howell Company	Sheet material transport equipment
DE2523430C3 (de) *	1975-05-27	1980-03-06	Vits-Maschinenbau Gmbh, 4018 Langenfeld	Vorrichtung zum stapelweisen Ablegen von hintereinander in Abständen geförderten Bogen
GB2128953B (en) *	1982-10-28	1986-04-09	Bishopbarn Ltd	Conveyor with suction means for holding articles in contact therewith
DD285327A5 (de) *	1989-06-28	1990-12-12	Veb Kombinat Polygraph "Werner Lamberz" Leipzig,Dd	Saugbandfoerderer in auslagen von druckmaschinen

1995
- 1995-10-25 DE DE19539663A patent/DE19539663A1/de not_active Ceased
1996
- 1996-09-17 EP EP96114866A patent/EP0770571B1/fr not_active Expired - Lifetime
- 1996-09-17 DE DE59608311T patent/DE59608311D1/de not_active Expired - Fee Related
- 1996-10-23 JP JP8280612A patent/JPH09132338A/ja active Pending
- 1996-10-25 US US08/740,252 patent/US5829740A/en not_active Expired - Fee Related
- 1996-10-25 CN CN96120394A patent/CN1150574A/zh active Pending

Also Published As

Publication number	Publication date
EP0770571A3 (fr)	1998-01-07
US5829740A (en)	1998-11-03
CN1150574A (zh)	1997-05-28
DE59608311D1 (de)	2002-01-10
DE19539663A1 (de)	1997-04-30
JPH09132338A (ja)	1997-05-20
EP0770571B1 (fr)	2001-11-28

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