WO1995001245A1 - Procede et dispositif pour la coupe transversale de bandes de matiere - Google Patents

Procede et dispositif pour la coupe transversale de bandes de matiere Download PDF

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Publication number
WO1995001245A1
WO1995001245A1 PCT/CH1994/000137 CH9400137W WO9501245A1 WO 1995001245 A1 WO1995001245 A1 WO 1995001245A1 CH 9400137 W CH9400137 W CH 9400137W WO 9501245 A1 WO9501245 A1 WO 9501245A1
Authority
WO
WIPO (PCT)
Prior art keywords
material web
knife
deflection flap
knife roller
web
Prior art date
Application number
PCT/CH1994/000137
Other languages
German (de)
English (en)
Inventor
Gusti Ochsner
Original Assignee
Ochsner + Co., Inh. G. Ochsner
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 Ochsner + Co., Inh. G. Ochsner filed Critical Ochsner + Co., Inh. G. Ochsner
Publication of WO1995001245A1 publication Critical patent/WO1995001245A1/fr

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
    • B65H29/58—Article switches or diverters
    • B65H29/62—Article switches or diverters diverting faulty articles from the main streams
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D11/00—Combinations of several similar cutting apparatus
    • 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
    • B26D7/18—Means for removing cut-out material or waste

Definitions

  • the present invention relates to a method for cross-cutting a material web conveyed over a support, in particular a paper or plastic strip, which is passed under at least one knife roller, the knife roller at an adjustable point in time depending on the conveying speed of the material web cuts through, and immediately after the knife roller by means of a deflection flap the incoming end of the material web can be directed away from the original web direction and a device for this.
  • a knife arranged on a rotatable roller is conventionally used, which together with a counter knife arranged below the material web cuts the material web each time the knife roller has been handled.
  • Such devices are used, for example, in the paper processing industry in that long paper strips arranged on rolls are cut into individual sheets.
  • This device is particularly suitable for transversely cutting consecutive band parts of different lengths, which may be separated from one another by a separating area.
  • the device proposed in the document only allows a relatively low belt throughput to be achieved, and the parts to be removed from the material web must have a certain length.
  • this stems from the use of a single knife roller, which always has to make a complete revolution for successive cuts, during which time the belt is transported further.
  • the electromechanical control of the flap by means of an electromagnet leads to relatively low swiveling speeds of the flap.
  • the object of the present invention was now to provide a method in which the disadvantages described are eliminated, i.e. that even very small strip parts can be reliably removed from the material web, and nevertheless a high material web speed can be achieved.
  • the deflection flap is actuated by the knife roller in such a way that it is immediately in front of. during a cutting operation of the knife roller, the material web is swung away so that the front cutting edge of the following material strip is conveyed further over the deflection flap in the original direction of the material web, and that the deflection flap is subsequently swung back into the material web, so that in each case one mate alternates ⁇ radial strips in the original web direction promotes and the following is led away from the web direction.
  • a very rapid movement of the deflection flap is achieved by the inventive control of the deflection flap by the knife roller.
  • the control disk of the knife roller controls the swiveling out of the flap out of the material web, which has to be done extremely quickly with small strips of material.
  • the flap can preferably be reset by means of compressed air; there is much more time for this movement.
  • the large swivel range of the deflection flap into the material web makes it possible to reliably remove even slightly corrugated material strips from the material web.
  • the "soft", not scalloped-like movement of the deflection flap advantageously leads to reduced noise and less wear.
  • the material web pieces continued in the original web direction can, for example, be continuously further processed in further downstream processing devices.
  • such pieces can be cut on the longitudinal edges and then folded and packaged. This is particularly suitable for processing brochure material printed on paper.
  • a device according to the invention for carrying out the method is described in claims 6 to 10.
  • FIG. 1 shows the schematic cross section of a cross cutting device according to the invention
  • FIG. 2 shows a detail of the area of the deflection device from FIG. 1 in the starting position
  • FIG. 3 shows the view of FIG. 2 shortly after the section of the second roller
  • FIG. 4 shows the view from FIG. 2 when the first roller is cut
  • Fig. 5 shows the view of the second knife roller in the position of Figure 3 with a schematically shown control disc connection.
  • FIG. 1 schematically shows a cross-cutting device according to the invention, in which a material strip 2, for example a paper strip, which is unwound from a roll, for example, by means of conveyor rolls 3 under two knife rolls 4 and 5 arranged one after the other is pushed through.
  • a material strip 2 for example a paper strip
  • an upper knife 4 * respectively, oriented transversely to the transport direction of the belt 2, 5 'arranged.
  • Each knife roller is 4.5 ', a material strip fest ⁇ stationary lower knife 4, 5' allocated below the '.
  • the transport rollers 3 are driven, for example, via a motor box 7, which drives the two knife rollers 4, 5 via a differential gear 8 in an adjustable transmission ratio.
  • the transmission ratio is adjusted in such a way that the material web 2 is regularly cut through the knife rollers 4, 5 at a predetermined point.
  • the differential gear 8 By means of the differential gear 8, the relative angular position of the two upper knives 4 'and 5' relative to one another can be adjusted continuously, preferably also during the operation of the device. In this way, two sections of material web 2 of different or equal length can alternately be produced, which can subsequently be transported on or collected.
  • Separate electric motors can also be used as drives for the individual transport rollers and knife rollers, which are operated by means of electronic control or regulation in the manner described.
  • the cross cutting device 1 has a deflection flap 9, which immediately after resp. in the second knife roller 5, for example, is arranged below the material web 2.
  • This deflection flap 9 is used to alternately lead or cut a section of the material web 2 from the original web direction. to remain in the original web direction. The mode of operation of the deflection flap is explained in more detail below with reference to FIGS. 2 to 4.
  • FIG. 2 shows the deflection area of the cross-cutting device 1, wherein a deflection flap 9 that can be pivoted about an axis 10 is provided, which preferably extends over the entire width of the knife roller 5.
  • a deflection flap 9 that can be pivoted about an axis 10 is provided, which preferably extends over the entire width of the knife roller 5.
  • the deflection flap 9 is pivoted downward. According to the invention, this movement takes place by means of a direct cam control which connects the deflection flap 9 to the knife roller 5.
  • the section 2 ′ of the material web 2 that has now been cut completely falls downward, while the subsequent new end of the material web 2 slides over the free end of the deflection flap 9.
  • the deflection flap 9 is then pivoted upward again, as shown in FIG. 4.
  • the material web 2 continues to pass over the free end of the deflection flap 9 headed.
  • the material web 2 is also cut through by the knife roller 1.
  • the new cut edge of the following material band section is now guided downward again through the free end of the deflection flap 9, as already shown in FIG.
  • the additional conveyor rollers 6 are preferably operated in such a way that they have a slightly higher speed than the conveyor rollers 3. In this way, the very small cutting width produced by the knife roller 4 in the material belt 2 is additionally widened, which increases the reliability of the deflection described.
  • the ratio of the alternating successive two material band sections can be adjusted continuously, while the transmission ratio between the conveyor rollers 3 and the knife rollers 4, 5 is the absolute length of two successive of the material strip sections determined.
  • an electronically controlled or regulated transmission of the drives of the conveyor rollers and knife rollers can be provided.
  • additional measuring elements for example for the effective material web speed after the conveyor rollers 3, are provided, on the basis of whose signals the rotational speed and, if appropriate, positioning of the knife rollers are controlled or. can be regulated. This enables consistently precisely positioned cuts to be achieved.
  • FIG. 5 schematically shows an embodiment variant of the cam drive according to the invention.
  • a control disk 11 is attached to the end of the knife roller 5. This actuates the deflection flap 9 via a push rod 12, which is guided in correspondingly designed bearings 13.
  • the push rod 12 preferably has a cam roller 14 for connection to the cam disk 11.
  • Either a spring element can be provided to press the cam roller 14 onto the control disk 11, or an air pressure element can also be provided, for example.
  • the control disk 11 can be arranged such that it actuates the deflection flap 9 directly (without a push rod 12).
  • the control disk 11 is not arranged directly on the axis of the knife roller 5, but only via a gearbox or. is connected to the knife roller with a toothed belt or the like.
  • Such a cross-cutting device is particularly suitable for trimming printed paper rolls in which unprinted areas are to be cut away between the actual printing areas and the printed, cut sections are to be processed further, for example to be folded or packaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Advancing Webs (AREA)

Abstract

Pour couper transversalement des bandes transportées sur un support, de préférence des bandes de papier ou de matière plastique, deux rouleaux rotatifs (5, 6) disposés de préférence au-dessus de la bande (2) sont chacun munis d'une lame supérieure (5', 6') qui coupe la bande (2) à un moment qui peut être réglé en fonction de la vitesse de transport. Conformément à l'invention, les sections de bande coupées par le deuxième rouleau à lame (5) sont enlevées alternativement dans deux directions. Ce procédé convient donc particulièrement au découpage de bandes imprimées lorsque des sections non imprimées à éliminer séparent les sections imprimées.
PCT/CH1994/000137 1993-07-01 1994-07-01 Procede et dispositif pour la coupe transversale de bandes de matiere WO1995001245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1981/93-7 1993-07-01
CH01981/93A CH688228A5 (de) 1993-07-01 1993-07-01 Verfahren zum Querschneiden von Materialbahnen und Einrichtung dazu.

Publications (1)

Publication Number Publication Date
WO1995001245A1 true WO1995001245A1 (fr) 1995-01-12

Family

ID=4223127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1994/000137 WO1995001245A1 (fr) 1993-07-01 1994-07-01 Procede et dispositif pour la coupe transversale de bandes de matiere

Country Status (2)

Country Link
CH (1) CH688228A5 (fr)
WO (1) WO1995001245A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1570960A3 (fr) * 2004-03-01 2005-10-05 Bernhard Ehret Dispositif pour découper transversalement des bandes planes imprimées
EP1837137A1 (fr) 2006-03-22 2007-09-26 Hunkeler AG Dispositif de coupe transversale ainsi que procédé de mise en oeuvre d'un tel dispositif

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1172973A (fr) * 1956-03-27 1959-02-18 Schloemann Ag Procédé pour débiter des éprouvettes dans une matière laminée en mouvement, dans un train de laminoir ou à la suite de celui-ci, et cisaille pour la mise en oeuvre de ce procédé
DE2900013A1 (de) * 1979-01-02 1980-07-10 Schloemann Siemag Ag Verfahren zum ablenken von laufendem walzgut aus der zufuehr-bewegungsbahn in verschiedene, uebereinanderliegende ablauf-bewegungsbahnen sowie rotierende schere zur durchfuehrung des verfahrens
US4480516A (en) * 1980-11-19 1984-11-06 Etablissements Ruby Machine for continuously cutting a strip for forming sections with rounded edges having opposite curvatures
US4784318A (en) * 1986-03-07 1988-11-15 Otto Bay Method and apparatus for cutting a paper or foil web into variously-sized rectangles
DE3841608A1 (de) * 1988-12-07 1990-06-13 Mannesmann Ag Vorrichtung zum abweisen von walzstabvorder- und hinterschopfenden
US5024128A (en) * 1989-02-21 1991-06-18 Campbell Jr Gaines P Sheeter for web fed printing press
US5199341A (en) * 1990-05-10 1993-04-06 Numerical Concepts, Inc. In-line, adjustable gap cutting sheeter for printed webs

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137180B (en) * 1983-04-02 1987-05-20 Will E C H Method and apparatus for forming a stream of partly overlapping paper sheets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1172973A (fr) * 1956-03-27 1959-02-18 Schloemann Ag Procédé pour débiter des éprouvettes dans une matière laminée en mouvement, dans un train de laminoir ou à la suite de celui-ci, et cisaille pour la mise en oeuvre de ce procédé
DE2900013A1 (de) * 1979-01-02 1980-07-10 Schloemann Siemag Ag Verfahren zum ablenken von laufendem walzgut aus der zufuehr-bewegungsbahn in verschiedene, uebereinanderliegende ablauf-bewegungsbahnen sowie rotierende schere zur durchfuehrung des verfahrens
US4480516A (en) * 1980-11-19 1984-11-06 Etablissements Ruby Machine for continuously cutting a strip for forming sections with rounded edges having opposite curvatures
US4784318A (en) * 1986-03-07 1988-11-15 Otto Bay Method and apparatus for cutting a paper or foil web into variously-sized rectangles
DE3841608A1 (de) * 1988-12-07 1990-06-13 Mannesmann Ag Vorrichtung zum abweisen von walzstabvorder- und hinterschopfenden
US5024128A (en) * 1989-02-21 1991-06-18 Campbell Jr Gaines P Sheeter for web fed printing press
US5199341A (en) * 1990-05-10 1993-04-06 Numerical Concepts, Inc. In-line, adjustable gap cutting sheeter for printed webs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1570960A3 (fr) * 2004-03-01 2005-10-05 Bernhard Ehret Dispositif pour découper transversalement des bandes planes imprimées
EP1837137A1 (fr) 2006-03-22 2007-09-26 Hunkeler AG Dispositif de coupe transversale ainsi que procédé de mise en oeuvre d'un tel dispositif
US7798039B2 (en) 2006-03-22 2010-09-21 Hunkeler Ag Cross cutting device and method for operating such a cross cutting device

Also Published As

Publication number Publication date
CH688228A5 (de) 1997-06-30

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