EP2388133B1 - Folding machine amd method - Google Patents

Folding machine amd method Download PDF

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Publication number
EP2388133B1
EP2388133B1 EP11166322.5A EP11166322A EP2388133B1 EP 2388133 B1 EP2388133 B1 EP 2388133B1 EP 11166322 A EP11166322 A EP 11166322A EP 2388133 B1 EP2388133 B1 EP 2388133B1
Authority
EP
European Patent Office
Prior art keywords
pair
cylinders
sheet
output
machine according
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.)
Not-in-force
Application number
EP11166322.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2388133A1 (en
Inventor
Giacomo Gori
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.)
Bacciottini Group Srl
Original Assignee
Bacciottini Group Srl
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 Bacciottini Group Srl filed Critical Bacciottini Group Srl
Publication of EP2388133A1 publication Critical patent/EP2388133A1/en
Application granted granted Critical
Publication of EP2388133B1 publication Critical patent/EP2388133B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0006Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof
    • B31F1/0009Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof of plates, sheets or webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00Folding thin material
    • B65H45/12Folding articles or webs with application of pressure to define or form crease lines

Definitions

  • the present invention relates to the technical field of folding machines, used for example in the typographic sector for the production of folders, covers and the like.
  • Folding machines are used in typography and in bookbinding for the processing of sheets of cardboard and card that need to be folded to form folders, covers and other objects made from suitably folded card.
  • folding takes place in various ways, using buckle folders, knife folders, "flying" knife folders, and helical folders.
  • Buckle folders are indicated for processing light cards.
  • the sheet not necessarily creased beforehand, is introduced into a pocket, closed at the end, where hitting the stop at high speed causes a fold that allows the following rollers to pull the sheet out of said pocket.
  • the sheet of card is pulled by a series of belts until a part of it meets a helical element which provides closing of a door while said sheet advances.
  • the main use is for cards of large thickness that cannot be folded with the other systems.
  • the sheet to be processed is wrapped, during the folding process, on suitable folding cylinders. Especially in the case of sheets of card of a certain thickness, this makes it impossible to process said sheet adequately or even causes it to be damaged. In fact, at the end of processing, the sheet will have a curvature imparted by the processing roller that actually makes it unusable. This is the reason for using helical folders, which succeed in folding the sheets without encountering the aforementioned problem.
  • helical folders have the drawback that they are unwieldy and require long set-up times.
  • the folding machine according to the present invention introduces a method of folding capable of overcoming the drawbacks enumerated above, connected with each folding machine of the prior art.
  • Machine for making folds in sheets of paper material and the like comprising two pairs of cylinders for handling the sheet being processed and for effecting folding of the sheet.
  • the folding machine according to the present invention introduces an additional control on sheet feed at the inlet, which can be of the creased type or not.
  • the folding machine according to the present invention comprises at least one pair of rollers at the inlet, controlled so as to stop the feed of the sheet at the inlet without having to insert it until it meets the stop in the pocket.
  • the machine comprises a first pair of tension cylinders 2, 10, and a carriage 11 comprising a second pair of pressure and feed cylinders 7, 8, preferably motorized synchronously with said first pair of cylinders 2, 10, said carriage 11 being able to execute a preferably substantially vertical movement between two limit positions, a lower position that is assumed when it is necessary to make a fold, in the sheet being processed, from bottom to top and an upper position that is assumed when it is necessary to make a fold, in the sheet being processed, in the opposite direction, i.e. from top to bottom.
  • the axial displacement of said carriage 11 means that the shafts of said second pair of cylinders 7, 8 are movable relative to the shafts of said first pair of cylinders 2, 10 and is such as to impress a partial fold in the sheet being processed corresponding to attainment of the middle position of said carriage 11 between said lower and upper limit positions.
  • the subsequent rotation of said first pair of cylinders 2, 10 will drive the sheet being processed until its point of folding is below said second pair of cylinders 7, 8, which, rotating in synchronism with the cylinders of said first pair of cylinders 2, 10, will complete the folding, finally pushing the folded sheet onto the output belt 13.
  • the folding of the sheet being processed therefore takes place without the use of knives or of folding pockets and without the sheet being processed having to be wrapped on the cylinders during the folding process.
  • processing and folding of the sheet as carried out by the machine according to the present invention take place as follows: at the moment when the machine according to the present invention is switched on, based on the programming provided, carriage 11 is arranged corresponding to its lower position, if the fold to be executed is an upward fold, or corresponding to its upper position if the fold to be executed is a fold in the opposite direction i.e. downward.
  • Said carriage 11, in its axial movement along the appropriate guides 19, 20, also provides displacement of all the parts that are integral with said carriage 11, i.e.: said second pair of cylinders 7, 8; the plates 9, 12, the purpose of which is to guide the sheet being processed - introduced via the inlet tray 1 - after exit from the guide wedges 3, 4, providing said sheet being processed with a supporting surface that is inclined in relation to the fold that will be executed; the connecting crosspieces 15, 16 and the upper 17 and lower 18 output plates that are intended to channel the sheet being processed, now already folded, towards the deflecting roller 14 positioned at the output of the machine according to the present invention.
  • the sheet received for example from a creasing machine arranged upstream of the machine according to the present invention, is supported on the input tray 1, next it is picked up by the first pair of cylinders 2, 10 and is then fed into the guide wedges 3 and 4.
  • carriage 11 In the case when the fold to be executed faces upwards, carriage 11, already arranged in the lower position, allows the sheet to advance freely and come to rest gently on said plate 9 until it brings the preexisting crease, or the point of folding, in line with the fine adjustment plate 5. At this point carriage 11 moves to the middle position bringing back said second pair of cylinders 7, 8 to the same height as said first pair of cylinders 2, 10. In doing so, said second pair of cylinders 7, 8 has already, through its displacement, given the sheet a fold of approx. 90°.
  • the sheet will be made to advance further in order to allow it to be taken up by the said second pair of cylinders 7, 8 which will squeeze it.
  • Said second pair of cylinders 7 and 8 has a motion synchronous with said first pair of cylinders 2, 10 and can moreover be synchronized, for example, with the cylinders of the optional creasing machine arranged upstream of the folding machine according to the present invention.
  • carriage 11 moves to the upper position and then performs the same manoeuvres as described previously, but in the opposite direction.
  • the sheet After folding, the sheet is pushed onto an output belt 13 which, by means of a roller 14, provides transport thereof and a new squeezing.
  • the machine according to the present invention can be provided with additional folding stages - comprising at least one further carriage similar to said carriage 11 and a further pair of cylinders similar to said second pair of cylinders 7, 8 - arranged in cascade so that they can make two or more folds on the same sheet.
  • the machine according to the present invention is able to work in conjunction with a creasing machine arranged upstream.
  • the machine according to the present invention can comprise a bridge connecting to a register table, so that folding of a sheet can be carried out while the creasing machine is already processing the next sheet, or can comprise a feeder or its own sheet feeder.
  • control module capable of accurately determining the beginning of the sheet to be processed.
  • Said control module could, for example, comprise a photocell arranged in order to sight the beginning of the sheet as it advances to the input of the machine according to the present invention.
  • the machine according to the present invention can be independent with regard to the layouts and the folds to be made, so that it can, instead, receive the layouts from the machine with which it is associated, for example the creasing machine arranged upstream of the machine according to the present invention of the preceding example.
  • the fold obtained in the sheet through the operation of the machine according to the present invention is executed without said sheet having to wrap around the rollers and without the need to use knives that characterize the similarly named folders, solving the technical problems described above, relative to the folding machines of the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP11166322.5A 2010-05-17 2011-05-17 Folding machine amd method Not-in-force EP2388133B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITFI2010A000107A IT1400065B1 (it) 2010-05-17 2010-05-17 Macchina piegatrice

Publications (2)

Publication Number Publication Date
EP2388133A1 EP2388133A1 (en) 2011-11-23
EP2388133B1 true EP2388133B1 (en) 2016-11-02

Family

ID=43640473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11166322.5A Not-in-force EP2388133B1 (en) 2010-05-17 2011-05-17 Folding machine amd method

Country Status (2)

Country Link
EP (1) EP2388133B1 (it)
IT (1) IT1400065B1 (it)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425696A (en) * 1992-02-19 1995-06-20 Fuji Xerox Co., Ltd. Swing chute paper folding apparatus with active guide
DE19709643C1 (de) * 1997-03-08 1998-07-16 Boewe Systec Ag Stauchfalzwerk mit zwei oder drei Falztaschen

Also Published As

Publication number Publication date
EP2388133A1 (en) 2011-11-23
IT1400065B1 (it) 2013-05-17
ITFI20100107A1 (it) 2011-11-18

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