EP0259433A1 - Improvement in the apparatus for carrying out cross perforations on a paper band. - Google Patents
Improvement in the apparatus for carrying out cross perforations on a paper band.Info
- Publication number
- EP0259433A1 EP0259433A1 EP87901609A EP87901609A EP0259433A1 EP 0259433 A1 EP0259433 A1 EP 0259433A1 EP 87901609 A EP87901609 A EP 87901609A EP 87901609 A EP87901609 A EP 87901609A EP 0259433 A1 EP0259433 A1 EP 0259433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- band
- carrying
- cylinder
- point
- 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.)
- Granted
Links
- 238000004080 punching Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000001154 acute effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D2007/2692—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member the rollers or cylinders being mounted skewed
Definitions
- the present invention relates to an improved apparatus for carrying out cross perforations on a paper band.
- apparatus carrying out cross perfo- rations necessary for the separation of the continuous paper bands in several sheets used in the paper machines consist of two parallel cylinders arranged with their axes perpendicular to the paper band. Both cylinders rotate almost in contact with each other in opposite directions so that their peripheries "accompany" the band passing therebetween.
- blade carrier The surface of one cylinder, referred to as “blade carrier”, is provided with at least a groove parallel to the axis of the cylinder, in which the perforation blade is locked by pressure, said blade striking the second cylinder, referred to as “striking cylinder” during the rotation of both cylinders so that the perforation of the paper band is carried out at a single blow and the form and the length thereof is equal to the edge of the blade.
- the present invention seeks to eliminate these troubles and to provide an apparatus in which the perforation blade is not arranged along a generatrix of the blade carrier cylinder but it is placed as a cylin ⁇ drical spiral having a constant and very long pitch so that the contact between perforation blade and "striking cylinder" is continuous point by point from one end to the other end of the blade and is kept the time needed for the blade carrier cylinder to be rotated by an acute angle which is formed on the axis of the cylinder by both generatrices passing by the ends of the blade.
- the paper band traverses a length equal to the plane extension of the cylinder portion between the generatrices carrying the blade.
- the axes of the blade carrier cylinder and the striking cylinder are parallel to each other and can not obviously oriented perpendicular to the traversing direction of the band, but the direction of said axes forms with the direction of the perforations to be carried out, i.e. with such a direction perpendicular to the traversing direction of the band, an angle equal to the angle that the tangent to the cylindrical spiral along which the perforation blade is placed forms point by point with the corresponding generatrix.
- the arrangement along a cylindrical spiral of the perforation blade consisting of a plane steel band, one edge of which is provided with spaced perforation teeth, is made possible as a set of parallel notches which are perpendicular to the edges of the band and extend from the opposite edge of the toothed edge are formed in the band.
- Fig. 1 is a perspective, fragmentary view showing the apparatus of the invention
- Fig. 2 is an elevation showing fragmentarily the perforation blade
- Fig. 3 is a top view showing in reduced scale the arrangement of the device with respect to the band.
- Fig. 4 is a general view of the apparatus between the paper unrolling and feeding devices.
- the apparatus according to the invention consists essentially of a blade carrier cylinder 10, a striking cylinder 11, a support 12 of the cylinders, and motors or driving means 13 and a system 14 which synchronizes the speed of rotation of cylinders 10 and 12 with the traversing speed of band N.
- Blade carrier cylinder 10 carries at its cylindrical surface 15 a perforation blade 16 extending from the circular surface 18 to the opposite circular surface along a track shaped as a spiral with very long pitch having one end 19 on generatrix G1 and the other end 20 on generatrix G2. As shown, generatrixes G1 and G2 form an angle J having its apex on the axis of the cylinder, thus defining a surface portion b.
- a pair of cylinders 10, 11 are arranged so that their axes form with the direction perpendicular to the feed direction an angle o( equal to angle o( formed point by point by the tangent to the spiral and the generatrix of the cylinder passing by that point.
- perfo- ration blade 16 comes in contact with band N "point by point" so that a straight perforation just perpendicular to the feed direction of the band can be achieved by a synchronization of the traversing speed of the band with . the speed of rotation of cylinders 10, 11.
- band N moves along length A equal to the plane extension of the cylindrical surface b between generatrices G1 and G2 containing blade 16 in the time needed for cylinder 10 to rotate by angle j .
- Shown in Fig. 2 is the construction of blade
- FIG. 4 Schematically shown in Fig. 4 id the arrange ⁇ ment of the device according to the invention, generally designated by 30, with respect to paper band N and the several machines and apparatus operating therewith.
- Such machines and apparatus consist of an unrolling spool of the continuous paper band, designated by 31, a punching machine 32 to perforate side holes designed to allow the band to be fed by means of wheels or toothed members, first driving device of band N, designated by 33, a device 34 coupling the position of the cross perforations made by the apparatus according to the invention with the position of side holes made by punching machine 32, a main driving device for band N, designated by 35, and an user machine 36 which can be a winding frame or a laser printer and the like.
- the apparatus according to the invention has to carry out cross perforations correlated to the side perforations made by punching machine 32. Furthermore the speed of rotation of the rollers has to be such that in the time band N moves along a length A cylinder 10 rotates by an acute angle between generatrices G1 and G2, such length A being equal to the plane extension of cylindrical surface b between generatrices itself (Fig. 1).
- apparatus 30 is provided with a known assembly, preferably of the electronic type, designated by 14, in order to be sinchronized both with punching machine 32 and driving devices 33 and 35.
- the invention provides a device readily and effectively solving the problem of perforating continuous paper bands by avoiding undue stresses, vibrations and strikings.
Abstract
Un nouvel appareil, permettant d'effectuer des perforations transversales, comprend une paire de cylindres parallèles (11,18) tournant presque en contact l'un avec l'autre, l'un des cylindres (18) portant la lame perforatrice (16), laquelle est disposée en spirale cylindrique ayant un très long pas et exerçant, durant la rotation, une pression contre la surface du second cylindre (11), appelé en général ''cylindre percuteur''.A new apparatus for making transverse perforations comprises a pair of parallel cylinders (11,18) rotating almost in contact with each other, one of the cylinders (18) carrying the perforating blade (16) , which is arranged in a cylindrical spiral having a very long pitch and exerting, during rotation, a pressure against the surface of the second cylinder (11), generally called ''impact cylinder''.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT47614/86A IT1190473B (en) | 1986-02-03 | 1986-02-03 | PROCESSING DEVICE FOR THE PERFORMANCE OF TRANSVERSAL PERFORATIONS ON A PAPER TAPE |
IT4761486 | 1986-02-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0259433A1 true EP0259433A1 (en) | 1988-03-16 |
EP0259433B1 EP0259433B1 (en) | 1992-12-02 |
Family
ID=11261440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87901609A Expired EP0259433B1 (en) | 1986-02-03 | 1987-02-02 | Improvement in the apparatus for carrying out cross perforations on a paper band |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0259433B1 (en) |
AU (1) | AU7027687A (en) |
DE (1) | DE3782891T2 (en) |
IT (1) | IT1190473B (en) |
WO (1) | WO1987004658A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1263104B (en) * | 1993-10-01 | 1996-07-24 | Meschi Ind Grafica | TRANSVERSAL PERFORATION GROUP AND RELATIVE PERFORATION METHOD FOR PRINTER MACHINES FEEDED BY A CONTINUOUS PAPER BELT WITHOUT AID OF DRIVING HOLES. |
US5720223A (en) * | 1993-10-01 | 1998-02-24 | Industria Grafica Meschi S.R.L. | Transversal perforating apparatus and respective perforating method for printers fed by continuous paper |
JP2981405B2 (en) * | 1994-10-17 | 1999-11-22 | 旭マシナリー株式会社 | Rotary cutter |
CN1101300C (en) * | 1997-06-06 | 2003-02-12 | 柯尼格及包尔公开股份有限公司 | Method and device for cross-perforating a moving paper strip |
JPH1158298A (en) * | 1997-08-12 | 1999-03-02 | Hiroshi Tsunoda | Die, and rotary die cutter using it |
IT1344097B1 (en) * | 2003-06-04 | 2008-02-12 | Tecnau Srl | Punching and / or drilling equipment for continuous forms |
EP2353810A1 (en) * | 2010-02-04 | 2011-08-10 | Müller Martini Holding AG | Device for treating a sheet of material |
US9486932B2 (en) | 2014-04-16 | 2016-11-08 | Kimberly-Clark Worldwide, Inc. | Perforation blade for perforating tissue products |
IT201700011567A1 (en) * | 2017-02-02 | 2018-08-02 | Futura Spa | process and equipment for checking the correct execution of the pre-cut lines. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1087118A (en) * | 1964-07-02 | 1967-10-11 | Paper Converting Machine Co | Improvements in or relating to cut off devices |
US3552251A (en) * | 1968-12-03 | 1971-01-05 | Bobst Champlain Inc | Rotary slit cutter |
US4280386A (en) * | 1979-12-26 | 1981-07-28 | The Ward Machinery Company | Paperboard slitting apparatus |
-
1986
- 1986-02-03 IT IT47614/86A patent/IT1190473B/en active
-
1987
- 1987-02-02 EP EP87901609A patent/EP0259433B1/en not_active Expired
- 1987-02-02 DE DE8787901609T patent/DE3782891T2/en not_active Expired - Fee Related
- 1987-02-02 AU AU70276/87A patent/AU7027687A/en not_active Abandoned
- 1987-02-02 WO PCT/IT1987/000008 patent/WO1987004658A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO8704658A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU7027687A (en) | 1987-08-25 |
EP0259433B1 (en) | 1992-12-02 |
IT1190473B (en) | 1988-02-16 |
WO1987004658A1 (en) | 1987-08-13 |
IT8647614A0 (en) | 1986-02-03 |
DE3782891T2 (en) | 1993-06-17 |
DE3782891D1 (en) | 1993-01-14 |
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