EP0197190A2 - Perforeuse de feuilles ou de bandes de papier le long des lignes pliées de celles-ci - Google Patents

Perforeuse de feuilles ou de bandes de papier le long des lignes pliées de celles-ci Download PDF

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Publication number
EP0197190A2
EP0197190A2 EP85113917A EP85113917A EP0197190A2 EP 0197190 A2 EP0197190 A2 EP 0197190A2 EP 85113917 A EP85113917 A EP 85113917A EP 85113917 A EP85113917 A EP 85113917A EP 0197190 A2 EP0197190 A2 EP 0197190A2
Authority
EP
European Patent Office
Prior art keywords
members
disks
sleeve
teeth
punching wheel
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.)
Withdrawn
Application number
EP85113917A
Other languages
German (de)
English (en)
Other versions
EP0197190A3 (fr
Inventor
Vittorio Vigano
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0197190A2 publication Critical patent/EP0197190A2/fr
Publication of EP0197190A3 publication Critical patent/EP0197190A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work
    • B26F1/10—Roller type punches

Definitions

  • the present invention relates to a device for piercing sheets or webs along fold lines thereof.
  • brochures, books, and magazines are usually formed from large size sheets or webs which have been printed simultaneously with a number of pages and then folded to the size of the individual printed pages.
  • That procedure is required to speed up the printing operations but poses some serious technical problems, not only in connection with the separation of the individual pages but also, and mainly, with the manifold folding of such large sheets carrying several simultaneously printed pages. It is, indeed, a well recognised fact that where repeated criss- crossing folds are made in a sheet, stresses develop naturally in the sheet at the fold lines which result in curlings, deformations, and uneven fold lines. With quality books and magazines using a relatively heavy glossy paper, the crimps induced by repeated folding may be unacceptable even where the edges of the individual pages are trimmed off and discarded prior to binding the books and magazines.
  • those prior devices comprise a thin serrated blade and an anvil blade effective to form thin spaced-apart cuts in the sheet.
  • Such sheet sections appear as segments in a row along which most of the paper or the like is removed. This approach enables even the most intricate folds to be carried out without crimping, since the comparatively long bridges left to interconnect the sheet portions defining the individual pages and which alternate with the cut off segments, allow for an appreciable shifting of the pages.
  • the conventional devices which pierce the printed sheets through by removing such aligned sections or segments therefrom comprise a pair of thin serrated blades, set apart from and flanking each other, in between which two anvil blades, one for each blade in the pair, are inserted.
  • the piercing blades are mounted to a primary shaft and the anvil blades are mounted to a secondary shaft. Suitable drives rotate both the primary and secondary shafts simultaneously.
  • Cuttings build up between the anvil blades and are conveyed out by specially provided removers usually in the form of a stationary dog that fits in between the anvil blades from the outside to guide the cuttings away.
  • the piercing and anvil blades are never truly perpendicular to the respective carrier shafts, and even the latter are never truly parallel to each other. It follows that in operation the piercing blades and anvil blades tend to wobble slightly, and if they happen to be mounted too close to one another, objectionable pressure engagements may occur. On the other hand, the piercing blades and anvil blades should be set as close together as feasible if an accurate cutting action is to be obtained. In actual practice, it has been found that position setting of the blades is a time-consuming process by trial and error.
  • the operation inaccuracy is enhanced by that the blade serrations, after cutting through a sheet, move up along a curved path which is different and "slower", in the linear sense, than the sheet straight path. It follows that the serrations will partly interfere, in their upward movement, with the uncut portions of the sheet which separate any two consecutive cuts.
  • the technical aim underlying the present invention is that of providing a novel device for piercing sheets and the like along set fold lines thereof, which can substantially obviate such prior shorcomings.
  • a device for piercing sheets and webs which comprises rotary interacting cutting members and anvil members between which sheets to be folded are made to pass, and members for taking sheet cuttings away from said cutting and anvil members, and is characterised in that said cutting members are a punching wheel having teeth of the same thickness as the width of the sheet portions to be cut off, and said anvil members are a pair of disks flanking said teeth on opposed sides, and in that for supporting said disks, there is provided a sleeve mounted for angular rotation and axial oscillation on a secondary shaft lying parallel to a primary shaft carrying said punching wheel, said members for taking sheet cuttings away being connected to said disks and set to oscillate therewith.
  • a device according to this invention is generally designated with the reference numeral 1. It comprises cutting members 2, anvil members 3, and discharge members 4.
  • the device 1 works on sheets 5 to pierce them with cuts 6 defining in combination bands 7 whereat the material of the sheets 5 is removed in sections or segments; the numeral 8 denotes sheet portions cut out with the device 1.
  • the bands 7 extend along fold lines provided across the sheet 5, as shown in Figure 1.
  • the cutting members 2 are a punching or die-cutting wheel 9 having a respective primary shaft 10, coaxially therewith, and a holder assembly 11 which secures the punching wheel 9 clampingly to the primary shaft 10 ( Figure 3).
  • the punching wheel 9 is formed with plural peripheral teeth 12 ( Figure 4) and has the same thickness dimension as the width of the portions 8 to be cut off.
  • Each tooth 12 has, at its trailing region away from the leading portion, a radially projecting lug 13 relatively to the wheel 9.
  • the lug is arranged to permit an almost simultaneous initial engagement of the leading and trailing ends of each tooth 12 with the sheet 5 ( Figure 4).
  • Undercuts 14 between the teeth 12 form oblique sides 14a at least adjacently the lugs 13.
  • Obliquity refers to the radial direction of the punching wheel 9 and is provided to form recesses at the roots of the teeth 12.
  • the anvil members 3 comprise a pair of disks 15 flanking the punching wheel 9, a secondary shaft 16, and a sleeve 17 interconnecting the secondary shaft 16 to the disks 15. As shown in Figure 3, the disks 15 are convergent toward each other and the punching wheel 9, so as to leave as large a gap as possible therebetween, and are affixed to the sleeve 17.
  • the latter has a pair of ring nuts 18 which are threadable in opposite directions to bring the disks 15 against an annular elevation 19 centrally to the sleeve 17.
  • the anvil blades 3, as well as the punching wheel 9, are made of steel and spaced apart at the punching wheel 9 by about 2 mm.
  • the sleeve 17 is instead formed from an anti-friction material, at least at its portion contacting the secondary shaft 16.
  • the sleeve 17 be not affixed to the secondary shaft 16 but allowed to move relatively thereto, both by angular rotation and axial oscillation.
  • the positions and rotational speeds of the anvil blades 15 are dictated by the punching wheel 9 and the sheet 5 being processed.
  • the ring nuts 18 may be formed from a lightweight material such as aluminium.
  • the cuttings removing members 4 are shown in Figures 2 and 3. They can be made to oscillate with the sleeve 17 and comprise a rope 20 (or the like device for insertion between the disks 15 and stretching between the sleeve 17 and a small auxiliary shaft 21 parallel to the secondary shaft 16).
  • the rope 20 rests on the annular elevation 19 with the interposition of a bushing 22 effective to prevent the rope from damaging the sleeve 17 when under tension.
  • the small auxiliary shaft 21 is positioned to set the rope 20 obliquely to act as a guide or chute conveying the cuttings 8 downwards (Figure 2). It is not necessary for the rope 20 to be moved synchronously with the sleeve 17; the bushing 22 would be mounted loosely on the sleeve 17 ( Figure 3).
  • the sleeve 17 is, in fact, freely movable both in the rotary and axial directions on its secondary shaft 16.
  • the cuttings 8 are taken away from the sheet 5 and tendentially ejected by the radial and tangential thrust applied by the lugs 13.
  • the rope 20 will convey the cuttings 8 to discharge by forming a freely movable chute.
  • the invention affords some important advantages. By setting the anvil members free, they can take constantly optimum positions and angular velocities in relation to the forces involved, thus minimising them. Therefore, on the one side, no critical position adjustments are required for the anvil members, and on the other side, these will produce no slippage at the sheets being processed, which results in accurately made cuts and minimum wear of the device.
  • each tooth 12 of the cutting members 2 do not interfere with the uncut sections on moving up after piercing, on account of the shape of the undercuts 14. Also, each tooth 12 penetrates almost simultaneously the sheets being processed with all its circumferential length, owing to the radially projecting lug 13 engaging the sheets from relatively rearward positions.
  • the invention provides cuts which are qualitatively comparable to those made with the die-cutting technique. Over the latter, however, it affords the important advantage of the high adaptability and flexibility of operation which are typical of rotary cutting members.
  • the cuttings 8 pose no build-up problems. These are pushed by the lugs 13 (forming the radially outermost portions of the punch wheel 9 and those driven at the highest tangential velocity) into an expanded area between the disks 15 in the transverse direction, due to the convergent setting of the disks, and are then taken by the rope 20 away from the disks 15.
  • the rope 20 may also be taut; in any case, it would be allowed to oscillate freely with the sleeve 17, and produce no indentations owing to the provision of the bushing 22.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP85113917A 1985-01-28 1985-10-31 Perforeuse de feuilles ou de bandes de papier le long des lignes pliées de celles-ci Withdrawn EP0197190A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1925485 1985-01-28
IT19254/85A IT1184854B (it) 1985-01-28 1985-01-28 Dispositivo per intagliare fogli e nastri in corrispondenza delle linee di piegatura degli stessi

Publications (2)

Publication Number Publication Date
EP0197190A2 true EP0197190A2 (fr) 1986-10-15
EP0197190A3 EP0197190A3 (fr) 1987-01-14

Family

ID=11156152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113917A Withdrawn EP0197190A3 (fr) 1985-01-28 1985-10-31 Perforeuse de feuilles ou de bandes de papier le long des lignes pliées de celles-ci

Country Status (2)

Country Link
EP (1) EP0197190A3 (fr)
IT (1) IT1184854B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507747A1 (fr) * 1991-04-03 1992-10-07 FABIO PERINI S.p.A. Appareil de perforation de bandes de papier ou similaire, avec mouvement de translation alternatif de la contre-lame
EP1116561A2 (fr) * 2000-01-14 2001-07-18 Axel Lewandowski Unité de perforation
EP3848169A1 (fr) * 2020-01-08 2021-07-14 manroland Goss web systems GmbH Couteau perforant pourvu de surface de sertissage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781095A (en) * 1951-08-18 1957-02-12 Spinner Isidore Roller perforating device
DE2646159A1 (de) * 1976-10-13 1978-04-20 Oppenweiler Gmbh Maschinenbau Verfahren zum binden oder broschieren eines buches, vorrichtung zum durchfuehren des verfahrens und nach dem verfahren hergestelltes buch
US4417833A (en) * 1979-12-04 1983-11-29 Iscar Ltd. Rotary slot cutting tools

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781095A (en) * 1951-08-18 1957-02-12 Spinner Isidore Roller perforating device
DE2646159A1 (de) * 1976-10-13 1978-04-20 Oppenweiler Gmbh Maschinenbau Verfahren zum binden oder broschieren eines buches, vorrichtung zum durchfuehren des verfahrens und nach dem verfahren hergestelltes buch
US4417833A (en) * 1979-12-04 1983-11-29 Iscar Ltd. Rotary slot cutting tools

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507747A1 (fr) * 1991-04-03 1992-10-07 FABIO PERINI S.p.A. Appareil de perforation de bandes de papier ou similaire, avec mouvement de translation alternatif de la contre-lame
EP1116561A2 (fr) * 2000-01-14 2001-07-18 Axel Lewandowski Unité de perforation
EP1116561A3 (fr) * 2000-01-14 2003-07-23 Andreas Lewandowski Unité de perforation
EP3848169A1 (fr) * 2020-01-08 2021-07-14 manroland Goss web systems GmbH Couteau perforant pourvu de surface de sertissage

Also Published As

Publication number Publication date
IT8519254A0 (it) 1985-01-28
EP0197190A3 (fr) 1987-01-14
IT1184854B (it) 1987-10-28

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