EP0739694A1 - Dispositif de perforation longitudinale pour imprimantes et/ou machines pour le traitement du papier - Google Patents

Dispositif de perforation longitudinale pour imprimantes et/ou machines pour le traitement du papier Download PDF

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Publication number
EP0739694A1
EP0739694A1 EP96830233A EP96830233A EP0739694A1 EP 0739694 A1 EP0739694 A1 EP 0739694A1 EP 96830233 A EP96830233 A EP 96830233A EP 96830233 A EP96830233 A EP 96830233A EP 0739694 A1 EP0739694 A1 EP 0739694A1
Authority
EP
European Patent Office
Prior art keywords
paper
tool
support
roller
longitudinal
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Withdrawn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
EP96830233A
Other languages
German (de)
English (en)
Inventor
Luciano Meschi
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.)
Industria Grafica Meschi SRL
Original Assignee
Industria Grafica Meschi 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 Industria Grafica Meschi SRL filed Critical Industria Grafica Meschi SRL
Publication of EP0739694A1 publication Critical patent/EP0739694A1/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Withdrawn legal-status Critical Current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
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/04—Means for moving the cutting member into its operative position for cutting by fluid pressure

Definitions

  • the present invention relates to the field of paper and more precisely to a longitudinal perforating device for paper processing and/or printing machines.
  • the line of perforation is continuous.
  • the cutting tool which is a sharp, toothed wheel, engages in a rolling manner, pressing on a countersupport roller on which the paper advances.
  • the movement of approach of the tool towards the roller and at the end against it must be regulated with care since any kind of impact that could damage the sharpness of the tool must be avoided.
  • discontinuous perforation it is, however, frequently necessary to have a discontinuous perforation. This, for example, may be necessary when, in printing a bill, one sheet from which a label must be formed, delimited by two transversal perforations and by at least one longitudinal perforation, is followed by a sheet which must not have longitudinal perforations, for example a financial statement.
  • the object of the present invention is to provide a longitudinal perforating device for paper processing and/or printing machines which is extremely simple to construct and which makes it possible to perforate the paper in an intermittent discontinuous way also making it possible to vary the length of the perforated tract or of the non perforated tract without having to change the tool and without subjecting it to rapid wearing.
  • the device according to the invention whose novel feature is that it comprises a circular tool for perforation mounted on a motorized support which gives the tool a tip speed substantially equal to that of the paper and the countersupport roller and that simultaneously provides a movement of alternating approach of variable frequency.
  • the support of the tool determines an approach movement according to a curved trajectory, the tool nearing the countersupport roller and the paper in a tangential direction.
  • the support of the tool is mounted in a rotatable manner on a transversal grooved bar which rotates around its own axis and to which a gear wheel for transmitting motion to the tool is keyed, the support being able to contemporaneously rotate around the grooved bar and translate along it, so that it is also possible to position the line of perforation in a direction transversal to the paper.
  • a continuous web of paper indicated with 1 crosses a longitudinal perforation group 2 comprising a countersupport roller 3 and a couple of perforation devices 4 according to the invention.
  • the perforation devices each comprise a circular tool 5 with a sharp, toothed edge suited to roll on roller 3 producing a longitudinal perforation 6 on paper 1.
  • Each tool 5 is mounted in a rotatable manner on a support 7 and is set in rotation by a grooved transmission bar 8 on which a gear wheel 10 is keyed which is, in turn, connected to a gear 11 integral with tool 5.
  • Support 7 is connected in an idle rotatable manner to bar 8 by means of a bearing 9, so that it can simultaneously carry out a translation movement along it and a rotation movement with respect to its axis, respectively according to arrows A and B of figure 4.
  • the translation movement allows for the placement of tool 5 in a transversal direction so as to vary the distance of perforation 6 with respect to the edges of paper 1.
  • the rotation movement makes it possible to rapidly approach tool 5 to paper 1 and roller 3 with extreme ease.
  • the angular position of support 7 with respect to grooved bar 8 is controlled automatically by a small piston 12 which acts on a lever 7a protruding from support 7.
  • the piston 12 is part of a double-acting pneumatic actuator 13 supplied by a conduit 13a and integral with a carriage 14 which can slide transversally, in a way that can be blocked by means of a handle 15, on a couple of guides 16 so as to allow for the transversal placement of tool 5 with respect to paper 1.
  • the guides 16 extend transversally between the support walls 17 to which also roller 3, bar 8 and paper dragging rollers 18 are keyed. Dragging rollers 18 are set in rotation by belt drive means 20 and a belt 21.
  • carriage 14 (figs. 3 and 4) is connected to support 7 by means of a bearing 22 which allows for its dragging in a transversal direction when carriage 14 slides along guides 16.
  • a pusher 23 is provided for as part of an actuator 24 which acts against a lever 7b protruding from support 7. Pusher 23 functions to counterbalance the action which piston 12 has on support 7 thus dampening the approaching movement of tool 5 at the time of contact with roller 3.
  • a paper feed 25 mounted on a guide 26 and set in rotation by a grooved bar 27 is also shown.
  • the approaching movement of tool 5 occurs according to a curved trajectory C in a substantially tangential direction with respect to roller 3, reducing the probability of impact between the sharp edge of tool 5 and roller 3 itself to a minimum, and thus considerably increasing the duration of the sharp edge.
  • These probabilities of impact are further reduced by the presence of pusher 23 which also ensures a constancy and punctuality of the sinking of the tool in the paper.
  • the fact that actuator 13 is of a pneumatic type further facilitates the dampening action on the part of pusher 23 and reduces the damaging effect of a possible contact of tool 5 with roller 3.
  • One very advantageous use for the device according to the invention can be made in the case of the printing of bills that have to be addressed to a large number of customers and which incorporate a postal notice for payment which, as known, often extends to a length greater than the width of standard A4 size sheets of paper.
  • the paper used had to be of a width sufficient to contain the transversally placed notice and had to be separated by transversal perforations.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP96830233A 1995-04-24 1996-04-24 Dispositif de perforation longitudinale pour imprimantes et/ou machines pour le traitement du papier Withdrawn EP0739694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95FI000078A IT1278652B1 (it) 1995-04-24 1995-04-24 Dispositivo di perforazione longitudinale per macchine di lavorazione e/o stampa della carta
ITFI950078 1995-04-24

Publications (1)

Publication Number Publication Date
EP0739694A1 true EP0739694A1 (fr) 1996-10-30

Family

ID=11351201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830233A Withdrawn EP0739694A1 (fr) 1995-04-24 1996-04-24 Dispositif de perforation longitudinale pour imprimantes et/ou machines pour le traitement du papier

Country Status (2)

Country Link
EP (1) EP0739694A1 (fr)
IT (1) IT1278652B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002100614A1 (fr) * 2001-06-11 2002-12-19 Micromec S.N.C. Di Prataiola E Bruschi Appareil et procede permettant de deplacer un dispositif tranchant dans une direction parallele a un debit de papier
CN106514733A (zh) * 2016-11-01 2017-03-22 彭伟成 一种手动切纸机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887331A (en) * 1931-08-26 1932-11-08 Wesley P Shomaker Perforator
DE8600460U1 (de) * 1986-01-10 1986-02-20 Lenze GmbH & Co KG Aerzen, 3258 Aerzen Längsschneidvorrichtung für Warenbahnen mit hintereinander angeordneten unterschiedlichen Schneidsystemen
BE904927A (fr) * 1986-06-16 1986-10-16 Maher Pierce Appareil de perforation de feuilles.
DE9211522U1 (de) * 1992-09-02 1992-10-22 C. Behrens Ag, 3220 Alfeld Vorrichtung zum Stanzen von bewegtem bahnförmigem Material
US5367934A (en) * 1993-04-29 1994-11-29 Calcomp Inc. Media cutter mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887331A (en) * 1931-08-26 1932-11-08 Wesley P Shomaker Perforator
DE8600460U1 (de) * 1986-01-10 1986-02-20 Lenze GmbH & Co KG Aerzen, 3258 Aerzen Längsschneidvorrichtung für Warenbahnen mit hintereinander angeordneten unterschiedlichen Schneidsystemen
BE904927A (fr) * 1986-06-16 1986-10-16 Maher Pierce Appareil de perforation de feuilles.
DE9211522U1 (de) * 1992-09-02 1992-10-22 C. Behrens Ag, 3220 Alfeld Vorrichtung zum Stanzen von bewegtem bahnförmigem Material
US5367934A (en) * 1993-04-29 1994-11-29 Calcomp Inc. Media cutter mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002100614A1 (fr) * 2001-06-11 2002-12-19 Micromec S.N.C. Di Prataiola E Bruschi Appareil et procede permettant de deplacer un dispositif tranchant dans une direction parallele a un debit de papier
CN106514733A (zh) * 2016-11-01 2017-03-22 彭伟成 一种手动切纸机

Also Published As

Publication number Publication date
IT1278652B1 (it) 1997-11-27
ITFI950078A0 (it) 1995-04-24
ITFI950078A1 (it) 1996-10-24

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