EP0462851A2 - Vorrichtung zum Querschneiden eines Papierbandes - Google Patents

Vorrichtung zum Querschneiden eines Papierbandes Download PDF

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Publication number
EP0462851A2
EP0462851A2 EP91401299A EP91401299A EP0462851A2 EP 0462851 A2 EP0462851 A2 EP 0462851A2 EP 91401299 A EP91401299 A EP 91401299A EP 91401299 A EP91401299 A EP 91401299A EP 0462851 A2 EP0462851 A2 EP 0462851A2
Authority
EP
European Patent Office
Prior art keywords
blade
oscillating
cutting edge
cutting
stationary
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Withdrawn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
EP91401299A
Other languages
English (en)
French (fr)
Other versions
EP0462851A3 (en
Inventor
Claude Moineau
Bernard Mouchet
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.)
Axiohm SA
Original Assignee
Axiohm SA
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
Priority claimed from FR9006442A external-priority patent/FR2662531B1/fr
Priority claimed from FR9006443A external-priority patent/FR2662385B1/fr
Application filed by Axiohm SA filed Critical Axiohm SA
Publication of EP0462851A2 publication Critical patent/EP0462851A2/de
Publication of EP0462851A3 publication Critical patent/EP0462851A3/fr
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the present invention relates to a cutting device for, for example, producing labels, tickets, cards, tickets ... from a continuous strip of paper or cardboard.
  • the present invention intends to propose a cutting device of this kind with an oscillating blade, which is therefore more robust than a guillotine device and the service life of which compared to existing rotary mechanisms is significantly increased so that the frequency of maintenance actions of the devices with which it is associated is considerably reduced.
  • the invention therefore relates to a cutting device for cutting successive sections in a continuous strip, comprising an oscillating blade whose cutting edge, driven in rotation about a fixed axis, crosses, sliding , over a length at least equal to the width of the strip to be cut, the cutting edge of a stationary blade, in which the stationary blade is generally L-shaped, its cutting edge being carried by the longest side from the internal angle of the L, the cutting edge of the oscillating blade extending to beyond the short side of this internal angle.
  • FIG. 1 The schematic representation of FIG. 1 comprises a blade 1 oscillating around an axis 2, one of the edges 3 (bevelled) constituting a cutting edge.
  • a stationary blade 4 is held in abutment against the edge 3 of the blade 1 by means of an elastic device, not shown.
  • This stationary blade has a coated L shape.
  • the re-entrant angle A of this L has a large side 5 which constitutes the second cutting edge of the device.
  • the short side 6 of this angle A is shown perpendicular to the long side. Its length will be defined as a function of the thickness of the ribbon 7 to be cut and the original position of the oscillation of the blade 1 around the axis 2, as will be explained below.
  • the edge 3 of the blade 1 is not parallel to the axis 2. It forms an angle B with the direction of this axis.
  • the long side 5 of the L is substantially parallel to the axis 2. Means for supporting these two blades in these relative positions are not shown.
  • this edge 5 may have a small engagement with respect to the edge 3, that is to say be very slightly inclined in the direction of the axis 2.
  • the angle of oscillation of the plate 1 originates from a first position of this blade relative to the blade 4 such that the apex of the angle A is uncovered by the cutting edge 3.
  • the amplitude of the oscillation will be at least equal to the value for which the crossing point M of edges 3 and 4 is distant, on edge 5, from the vertex of angle A, by a value at least equal to the width R of the strip to be cut.
  • This arrangement of the invention is that which allows the conventional oscillating knives, mentioned in the preamble, to be fitted with ceramic blades with, as a rotating blade, a composite member comprising a metal support part equipped with a ceramic cutting part.
  • Figure 2 shows a device of this type.
  • This comprises a part 10 having the shape of a cylinder having a housing 11 in the form of a recess leaving two end parts 12 and 13, comprising one facing the other of the faces 14 and 15. Between these faces, the recess 11 defines a flat bottom 16 which is inclined on the axis of revolution 2 of the part 10.
  • This plane 16 constitutes the implantation surface of the plate 1 made of ceramic or similar material, having a very high hardness and a very high resistance to abrasion and wear.
  • This plate 1 is glued by one of its large faces to the plane 16, so that its edge 3 which forms the cutting edge projects from the outside surface of the cylinder 10.
  • the stationary blade 4 is of the same shape as that described with reference to FIG. 1.
  • the stationary blade 4 which consists of a cut 8 of the external angle of the L.
  • This cut corresponds to the surface of the small branch of the L which allows the production of the blades 4 from a ceramic plate with minimization of material losses, including an optimization of the cost price.
  • FIG. 3 represents a characteristic of the invention which allows relatively wide strips to be cut under good conditions.
  • the effort to develop during cutting is lower the higher the crossing angle of the two edges. It is therefore advisable to have a large angle B (FIG. 1).
  • this angle finds an upper limit in a construction of the kind of that of FIG. 2, by the diameter of the cylinder 10.
  • the longer the cut at constant angle B the greater the angle of rotation of the cylinder and therefore the inclination of the upper face relative to the stationary blade 4 is distant from the right angle at the end of the cut.
  • the cut is all the better as this angle remains in the vicinity of the right angle.
  • FIG. 3 represents an oscillating blade 20, the upper surface 21 of which is not planar but rises gradually to maintain this right angle at the crossing point M.
  • This surface 21 is therefore such that a line 22 contained by it and perpendicular to the edge 3 at the crossing point M, is substantially perpendicular to the plane of the stationary blade 4. It is thus possible, inside the other dimensional constraints, to maintain a correct cut even at the end of the amplitude of rotation, which will be greater the wider the strip to be cut.
  • the arrangements of the invention are entirely suitable for cutting ribbon with a width of the order of 50 to 90 millimeters. Beyond this range we note that the cut is neither strictly perpendicular to the edges of the ribbon nor straight.
  • the shape of the cutting line is in fact a function of several geometric factors: the angle of engagement of the two cutting edges, the position of the oscillating cutting edge relative to the axis of rotation of the oscillating blade, the position of this axis relative to the stationary cutting edge.
  • Obtaining a rectilinear cut perpendicular to the edges of the strip involves keeping the cutting edge stationary.
  • FIG. 4 illustrates an alternative embodiment in which the oscillating blade is movable relative to the stationary stationary blade.
  • This diagram is a transverse section of the device according to a plane which would be located like that P of figure 2.
  • This diagram comprises the sketch of three positions of the oscillating blade, a first of rest before the cut, a second during the cut and a final one after cutting.
  • the elements already described with reference to the previous figures have the same references in this figure 4.
  • the blade 4 is here integral with a fixed support 30, therefore is completely immobilized and has, opposite the cutting edge 3 of the blade 1, the edges 5 and 6 which are described by the point of intersection M described above. above, when the blade 1 rotates about its axis 2.
  • This axis 2 is carried by a lever 31 articulated on the support 30 or a fixed member of the apparatus, so that, during the cutting rotation indicated by the arrow D, on the one hand due to the engagement of the blade 1 under the blade 4 and on the other hand the inclination of this blade 1 on the axis 2 (which will be assumed to be parallel to the edge 5), the axis 2 can move back by pivoting around the hinge 32 of the lever 31 on the support 30.
  • the axis 2 is slidably mounted in a fixed slide with respect to the fixed blade so that its movement relative to the fixed blade during the oscillations of the blade 1 is authorized.
  • the embodiment shown is nevertheless preferable since all the movements are rotations, which is mechanically simpler to perform and more robust in operation.
  • this mobile oscillating blade has the advantage of reducing the variation of the angle formed by the upper face of the oscillating blade 1 with the fixed blade 4 (such as 'it is illustrated right in M in figure 3). In fact, it is understood that the retraction of the axis 2 simultaneous with the rotation D of the blade 1 corrects by subtraction the evolution of the angle E of the value of the corresponding angle of oscillation of the lever 31.
  • the oscillation of the blade 1 around the axis 2 can be created by any suitable means. It will be recalled, however, that it is necessary to have very reliable equipment and that the main failures of these devices are mechanical and many of them are due to a malfunction of the device delivering the section of ribbon or ticket. Mention will be made in particular of the winding of the ribbon around the rotary knife when the latter adheres thereto either following a poor cut or due to the presence of moisture or gel.
  • the torque developed during the race is constant, while for cutting paper it is preferable to develop a significant torque when the cut is formed because it is the edge of the strip which has the greatest resistance.
  • the cutting device of FIG. 4 comprises a rotary cylindrical knife which is driven by a mechanism comprising a connecting rod 34 disposed between the axis 2 and a crank 35 which is fixed and wedged on the shaft of an engine or of a gear motor as shown in Figure 5.
  • This figure relates to an apparatus with a stationary blade which is not entirely stationary but it is not outside the scope of the invention to provide the stationary stationary blade and the blade oscillating mounted as in figure 4.
  • the device represented in FIG. 5 comprises two parallel plates 41 and 42 braced (for example at 43), forming the support frame of a thermal printer 44 and a cutting device which comprises an oscillating blade 45 and a fixed counter blade 46.
  • the blade 45 is of the type already described and is mounted journalled by its ends in the plates 41 and 42.
  • This cylinder has an edge of section 48.
  • the stationary counterblade 46 is formed by a plate which is tangent to the cylinder 45.
  • This plate is also articulated by end journals in the plates 41 and 42 and is held in abutment on the cylinder 45 by a spring 49 bandaged between the plate 46 and the spacer 43.
  • the line of tangency of the plate 46 with the cylinder 45 is constituted by the lower edge 50 of this blade which forms the fixed cutting edge of the device.
  • the cylinder 45 has an extension 51, located on the outside of the plate 41. This extension is equipped with a connecting rod or lever 52 which is perpendicular thereto. Furthermore, a motor 53 is fixed to the plate 41 so as to extend between the two plates 41 and 42. The output shaft 54 of the motor extends beyond the plate 41 to attack the toothed wheel by meshing. 55 of a reduction gear with toothed wheels 55, 56, 57, mounted in rotation on fixed axes, located perpendicularly on the plate 41. The output wheel 57 of the reduction gear carries an eccentric pin 58 which can pivot on the wheel 57 and which slidingly receives the lever 52 secured to the cylinder 45.
  • the rotation of the shaft 54 in the direction G causes the rotation of the wheel 57 in the direction H and the movement of the lever 52 by an angular amplitude 5.
  • the dimensions of the wheel 57, the eccentricity of the crankpin 58 and the distance separating the axes of this wheel 57 and of the cylinder 45 will be determined so that this amplitude I is sufficient for the edges 48 and 50 to pass from a first relative position or they are sufficiently spaced from one another so that the paper tape can pass between them, and a second position where the edge 48 is completely passed over the edge 50.
  • crankpin 58 is shown in its position corresponding to the initial rest position of the device.
  • the motor 53 rotates in the direction G, which causes the rotation of the wheel 57 on the amplitude J (greater than 180 °).
  • the crankpin then moves to the high position until the maximum amplitude I of the knife 45 is reached.
  • the lever arm acting on the oscillating blade evolves in the maximum of its dimensions, and consequently develops a maximum torque at the lowest speed. Due to the position of the crank pin 58 at the start of the cycle, the torque increases very quickly, so that by correctly placing the ribbon between the knives, the maximum torque can be made to coincide with the start of the cut.
  • the return stroke takes place on a much shorter angular stroke of the wheel 57, therefore much faster.
  • the lever 52 will have been chosen in the form of a rod calibrated in diameter which is radially fitted by one end in the extension 51 of the blade 45 (by being retained there for example by a screw) and mounted to slide in the swivel pin 58.
  • This rod 52 can therefore deform or even break in the event of an overload if the blade 45 jams, thereby preserving the upstream transmission chain.
  • the rod 52 can be replaced by a fork in which a crank pin 58 fixed on wheel 57, would be housed.
  • This device makes it possible to use a motor in a single direction of rotation.
  • This motor preferably direct current, is simply controlled in on-off mode, the microswitch being intended to deliver a signal for initializing the cycle. It is an inexpensive and reliable technique.
  • the speed of execution of the cycle by the knife is higher because there is no stopping of the motor at the turning point of the oscillation.
  • a final advantage of this transmission by gear train and connecting rod-crank is that it can adopt another geometry. It is indeed possible, depending on the space available between the plates and in the apparatus which receives the printer and the cutting device, to arrange the motor and the pinion in the most suitable manner (in length, in height %) to the available space.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handling Of Sheets (AREA)
EP19910401299 1990-05-23 1991-05-21 Apparatus for transverse cutting of a paper web Withdrawn EP0462851A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9006442 1990-05-23
FR9006443 1990-05-23
FR9006442A FR2662531B1 (fr) 1990-05-23 1990-05-23 Dispositif de coupe transversale d'une bande de papier continue.
FR9006443A FR2662385B1 (fr) 1990-05-23 1990-05-23 Dispositif de coupe d'un ruban de papier issu d'une imprimante.

Publications (2)

Publication Number Publication Date
EP0462851A2 true EP0462851A2 (de) 1991-12-27
EP0462851A3 EP0462851A3 (en) 1992-05-27

Family

ID=26228032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910401299 Withdrawn EP0462851A3 (en) 1990-05-23 1991-05-21 Apparatus for transverse cutting of a paper web

Country Status (1)

Country Link
EP (1) EP0462851A3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610116A1 (de) * 1993-02-03 1994-08-10 Axiohm Vorrichtung zum Erziehen von durchgehenden oder partiell quer ausgerichteten Schnitten in Warenbahnen
EP1326211A1 (de) * 2002-01-03 2003-07-09 Axiohm Vorrichtung zur Ausgabe von Karten

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2351093A (en) * 1942-08-11 1944-06-13 Western Electric Co Cutter
US3737267A (en) * 1972-01-07 1973-06-05 Owens Illinois Inc Safety device for blow molding machine
DE2218999A1 (de) * 1972-04-19 1973-11-15 Hauni Werke Koerber & Co Kg Vorrichtung zum abtrennen von einschlagmaterialabschnitten
DE2915901A1 (de) * 1978-04-24 1979-10-25 Minolta Camera Kk Einrichtung zum schneiden von papier mit einer rotierenden klinge
JPS54141473A (en) * 1978-04-26 1979-11-02 Sony Corp Cutting device
CH633329A5 (en) * 1978-08-14 1982-11-30 Textilma Ag Gear for converting a rotational movement into an oscillating movement for a textile machine, especially for a ribbon loom, and use of the gear
EP0173330A1 (de) * 1984-08-31 1986-03-05 SMH-ALCATEL Société anonyme dite: Messer zum Trennen eines Bandes
JPS6299006A (ja) * 1985-10-25 1987-05-08 Kimura Hamono Seizo Kk セラミツク刃物
EP0319752A2 (de) * 1987-12-05 1989-06-14 Hengstler Gmbh Abschneidevorrichtung für Datenstreifen bei maschineller Ausgabe
DE3743530A1 (de) * 1987-12-22 1989-07-06 Hauni Werke Koerber & Co Kg Querschneider

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2351093A (en) * 1942-08-11 1944-06-13 Western Electric Co Cutter
US3737267A (en) * 1972-01-07 1973-06-05 Owens Illinois Inc Safety device for blow molding machine
DE2218999A1 (de) * 1972-04-19 1973-11-15 Hauni Werke Koerber & Co Kg Vorrichtung zum abtrennen von einschlagmaterialabschnitten
DE2915901A1 (de) * 1978-04-24 1979-10-25 Minolta Camera Kk Einrichtung zum schneiden von papier mit einer rotierenden klinge
JPS54141473A (en) * 1978-04-26 1979-11-02 Sony Corp Cutting device
CH633329A5 (en) * 1978-08-14 1982-11-30 Textilma Ag Gear for converting a rotational movement into an oscillating movement for a textile machine, especially for a ribbon loom, and use of the gear
EP0173330A1 (de) * 1984-08-31 1986-03-05 SMH-ALCATEL Société anonyme dite: Messer zum Trennen eines Bandes
JPS6299006A (ja) * 1985-10-25 1987-05-08 Kimura Hamono Seizo Kk セラミツク刃物
EP0319752A2 (de) * 1987-12-05 1989-06-14 Hengstler Gmbh Abschneidevorrichtung für Datenstreifen bei maschineller Ausgabe
DE3743530A1 (de) * 1987-12-22 1989-07-06 Hauni Werke Koerber & Co Kg Querschneider

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT JAPANESE PATENT REPORT, semaine 8724, accession no. 87-166979, Derwent Publication Ltd, Lonfres, GB; & JP,A,62 099 006 ( KIMURA HAMONO SEIZO ). *
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 6, (M-88), 18 Janvier 1980; & JP,A,54 141 473 (SONY) 11-02-1979. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610116A1 (de) * 1993-02-03 1994-08-10 Axiohm Vorrichtung zum Erziehen von durchgehenden oder partiell quer ausgerichteten Schnitten in Warenbahnen
EP1326211A1 (de) * 2002-01-03 2003-07-09 Axiohm Vorrichtung zur Ausgabe von Karten

Also Published As

Publication number Publication date
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