WO2005090077A1 - Transport device for transporting a sheet in a printing machine - Google Patents

Transport device for transporting a sheet in a printing machine Download PDF

Info

Publication number
WO2005090077A1
WO2005090077A1 PCT/EP2005/002319 EP2005002319W WO2005090077A1 WO 2005090077 A1 WO2005090077 A1 WO 2005090077A1 EP 2005002319 W EP2005002319 W EP 2005002319W WO 2005090077 A1 WO2005090077 A1 WO 2005090077A1
Authority
WO
WIPO (PCT)
Prior art keywords
transport
sheet
transport device
belt
jacket
Prior art date
Application number
PCT/EP2005/002319
Other languages
French (fr)
Inventor
Sönke Christian BLÜTHGEN
Original Assignee
Eastman Kodak Company
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 Eastman Kodak Company filed Critical Eastman Kodak Company
Publication of WO2005090077A1 publication Critical patent/WO2005090077A1/en

Links

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
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H15/00—Overturning articles
    • B65H15/008—Overturning articles employing belts
    • B65H15/012—Overturning articles employing belts twisted belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/332—Turning, overturning
    • B65H2301/3321—Turning, overturning kinetic therefor
    • B65H2301/33212—Turning, overturning kinetic therefor about an axis parallel to the direction of displacement of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/332—Turning, overturning
    • B65H2301/3322—Turning, overturning according to a determined angle
    • B65H2301/33224—180°
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B65H2404/2614—Means for engaging or disengaging belts into or out of contact with opposite belts, rollers or balls

Definitions

  • the present invention relates to a transport device for transporting a sheet in a printing machine, said device comprising at least one pair of rotating transport means, in particular, transport belts, whereby two belt sections of said transport belts cooperate in order to transport said sheet, in particular with intersecting belt sections, preferably for turning over a sheet.
  • a transport device of the aforementioned type has been known from documents DE 100 23 828 A1 and DE 100 40 980 A1.
  • the problem is that sections of the belt that touch each other, in particular those that rub or chafe against each other, are subject to increased wear, specifically in the intersecting regions.
  • the transport means In order to avoid or minimize this wear, it is possible to coat the transport means with oil or another such more or less liquid or spreadable sliding agent.
  • this sliding agent may soil the sheets that are to be transported.
  • An object of the invention is to avoid or minimize the wear of the transport means and, at the same time, to avoid soiling the sheets.
  • this object is achieved in that at least one of the belt sections, which is free and not involved in the transport operation, is protected by a shield along at least one segment, in which said belt section may contact another belt section.
  • the material of this shield may be selected in such a manner that the transport means come into a low-wear contact with said material.
  • the shield can even be made of a sliding material for an unprotected belt section. In particular, due to the shield's triboelectric properties, a low-wear sliding assembly may be adjusted between this shield and the transport means.
  • the shield is configured as a jacket.
  • This jacket may be a hose or a tube, and may be specifically configured as a relatively stiff guiding sheath.
  • the jacket be provided with a longitudinal slit.
  • the jacket may advantageously be tensioned, because of its material and/or its shape, in such a manner that it is self- closing, so that, for example, an overlapping labyrinth closure is achieved.
  • Fig. 1 a side view of two intersecting transport means
  • Fig. 2 a plan view of a section of the transport means as in Fig. 1.
  • Fig. 1 shows a side view of two intersecting transport means, namely belts 1 and 2.
  • belts 1 and 2 are deflected by deflecting rollers 6 and, in so doing, each forms free belt sections 3, 4, which are not in use, and synchronous belt sections 5, which, between them, receive and transport sheets.
  • the free belt sections 3, 4 are passed through sheaths 7, which form a protective jacket.
  • sheaths 7, of course, may be supported by and mounted to a base frame, which is not illustrated in detail in Fig. 1.
  • the directions of movement of belt sections 3 through 5 are indicated by arrows 8, respectively.
  • Fig. 2 shows a plan view of a segment of belt sections 3 through 5. This illustration indicates that belt sections 5, which are involved in the transport operation and to which a load can be applied, run through the center of sheaths 7, which cannot be recognized very well in the illustration of Fig. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The present invention relates to a transport device for transporting a sheet in a printing machine, said device comprising at least one pair of rotating transport means, in particular, transport belts (1,2), whereby two belt sections of said transport belts (1,2) cooperate in order to transport said sheet, in particular with intersecting belt sections, preferably for turning over a sheet. An object of the invention is to avoid or minimize the wear of the transport means and, at the same time, to avoid soiling the sheets. In accordance with the invention, this object is achieved in that at least one of the belt sections (3,4), which is free and not involved in the transport operation, is protected by a shield (7) along at least one segment, in which said belt section may contact another belt section.

Description

Transport Device for Transporting a Sheet in a Printing Machine
The present invention relates to a transport device for transporting a sheet in a printing machine, said device comprising at least one pair of rotating transport means, in particular, transport belts, whereby two belt sections of said transport belts cooperate in order to transport said sheet, in particular with intersecting belt sections, preferably for turning over a sheet.
A transport device of the aforementioned type has been known from documents DE 100 23 828 A1 and DE 100 40 980 A1.
Considering such a transport device, the problem is that sections of the belt that touch each other, in particular those that rub or chafe against each other, are subject to increased wear, specifically in the intersecting regions. In order to avoid or minimize this wear, it is possible to coat the transport means with oil or another such more or less liquid or spreadable sliding agent. However, this sliding agent may soil the sheets that are to be transported.
An object of the invention is to avoid or minimize the wear of the transport means and, at the same time, to avoid soiling the sheets.
In accordance with the invention, this object is achieved in that at least one of the belt sections, which is free and not involved in the transport operation, is protected by a shield along at least one segment, in which said belt section may contact another belt section. As result of this, the wear of the transport means is successfully prevented because the transport means are no longer in direct contact with each other and do not rub against each other. The material of this shield may be selected in such a manner that the transport means come into a low-wear contact with said material. Preferably, the shield can even be made of a sliding material for an unprotected belt section. In particular, due to the shield's triboelectric properties, a low-wear sliding assembly may be adjusted between this shield and the transport means.
A preferred modification of the invention provides that the shield is configured as a jacket. This jacket may be a hose or a tube, and may be specifically configured as a relatively stiff guiding sheath.
In order to facilitate the installation of the jacket, it is preferable that the jacket be provided with a longitudinal slit. In so doing, the jacket may advantageously be tensioned, because of its material and/or its shape, in such a manner that it is self- closing, so that, for example, an overlapping labyrinth closure is achieved.
One embodiment, which could result in additional inventive features but which does not restrict the scope of the present invention, is shown by the schematic drawings.
They show in
Fig. 1 a side view of two intersecting transport means, and
Fig. 2 a plan view of a section of the transport means as in Fig. 1.
Fig. 1 shows a side view of two intersecting transport means, namely belts 1 and 2. These belts 1 and 2 are deflected by deflecting rollers 6 and, in so doing, each forms free belt sections 3, 4, which are not in use, and synchronous belt sections 5, which, between them, receive and transport sheets. In particular in the intersecting region of belt sections 3, 4, 5, the free belt sections 3, 4 are passed through sheaths 7, which form a protective jacket. In so doing, sheaths 7, of course, may be supported by and mounted to a base frame, which is not illustrated in detail in Fig. 1. The directions of movement of belt sections 3 through 5 are indicated by arrows 8, respectively.
Fig. 2 shows a plan view of a segment of belt sections 3 through 5. This illustration indicates that belt sections 5, which are involved in the transport operation and to which a load can be applied, run through the center of sheaths 7, which cannot be recognized very well in the illustration of Fig. 1.

Claims

Patent Claims
1. Transport device for transporting a sheet in a printing machine, said device comprising at least one pair of rotating transport means, in particular, transport belts, whereby two belt sections of said transport belts cooperate in order to transport said sheet, in particular with intersecting belt sections, preferably for turning over a sheet, characterized in that at least one of the free belt sections not involved in the transport operation is protected by a shield at least along one segment, in which said belt section may contact another belt section.
2. Transport device as in Claim 1 , characterized in that the shield is configured as a jacket.
3. Transport device as in Claim 1 or 2, characterized in that the shield is made of a sliding material for an unprotected belt section.
4. Transport device as in Claim 2 or 3, characterized in that the jacket is configured as a sheath.
5. Transport device as in Claim 2 or 4, characterized in that the jacket is provided with a longitudinal slit.
6. Transport device as in Claim 5, characterized in that the jacket is made of a material and/or has a shape providing a tension which acts in self-closing direction.
PCT/EP2005/002319 2004-03-10 2005-03-04 Transport device for transporting a sheet in a printing machine WO2005090077A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004011633A DE102004011633A1 (en) 2004-03-10 2004-03-10 Conveyor for conveying a sheet in a printing machine
DE102004011633.4 2004-03-10

Publications (1)

Publication Number Publication Date
WO2005090077A1 true WO2005090077A1 (en) 2005-09-29

Family

ID=34895132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/002319 WO2005090077A1 (en) 2004-03-10 2005-03-04 Transport device for transporting a sheet in a printing machine

Country Status (2)

Country Link
DE (1) DE102004011633A1 (en)
WO (1) WO2005090077A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105438866A (en) * 2015-11-30 2016-03-30 安徽悦美卫生用品有限公司 Expanded-paper turnover device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535997A (en) * 1993-06-10 1996-07-16 Levi Strauss & Co. Fabric piece automatic feeder with suction cup picker and twisted-belt flipper
DE10040980A1 (en) 1999-09-15 2001-03-22 Nexpress Solutions Llc Transport device for sheet printing machine uses mechanical, electromagnetic or electrostatic force for clamping transported sheet edges in defined position
DE10023828A1 (en) 2000-05-15 2002-01-03 Nexpress Solutions Llc Device for transporting printing material through a printing unit
EP1170238A2 (en) * 2000-05-18 2002-01-09 NexPress Solutions LLC Turning device
US20030034234A1 (en) * 2000-05-12 2003-02-20 Norbert Neumann Device for guiding belts for transporting flat materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838771A (en) * 1972-10-05 1974-10-01 B Whiteford Apparatus for inverting mailing envelopes
DE3006266C2 (en) * 1980-02-20 1982-12-02 Mohndruck Graphische Betriebe Gmbh, 4830 Guetersloh Reversing device for book blocks, books, magazines or the like. Products
DE3626706A1 (en) * 1986-08-07 1988-02-11 Linden Alfred Kg Turning device for sheet-like material
US6254092B1 (en) * 2000-04-17 2001-07-03 Hewlett-Packard Company Controlling vacuum flow for ink-jet hard copy apparatus
DE10059913C2 (en) * 2000-05-18 2003-04-10 Nexpress Solutions Llc turning device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535997A (en) * 1993-06-10 1996-07-16 Levi Strauss & Co. Fabric piece automatic feeder with suction cup picker and twisted-belt flipper
DE10040980A1 (en) 1999-09-15 2001-03-22 Nexpress Solutions Llc Transport device for sheet printing machine uses mechanical, electromagnetic or electrostatic force for clamping transported sheet edges in defined position
US20030034234A1 (en) * 2000-05-12 2003-02-20 Norbert Neumann Device for guiding belts for transporting flat materials
DE10023828A1 (en) 2000-05-15 2002-01-03 Nexpress Solutions Llc Device for transporting printing material through a printing unit
EP1170238A2 (en) * 2000-05-18 2002-01-09 NexPress Solutions LLC Turning device

Also Published As

Publication number Publication date
DE102004011633A1 (en) 2005-09-29

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