EP3085503B1 - Procede de poinçon de perforation pour fabrication d'etiquettes - Google Patents

Procede de poinçon de perforation pour fabrication d'etiquettes Download PDF

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Publication number
EP3085503B1
EP3085503B1 EP16166291.1A EP16166291A EP3085503B1 EP 3085503 B1 EP3085503 B1 EP 3085503B1 EP 16166291 A EP16166291 A EP 16166291A EP 3085503 B1 EP3085503 B1 EP 3085503B1
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EP
European Patent Office
Prior art keywords
punching
cut
punching process
puncture
final shape
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.)
Not-in-force
Application number
EP16166291.1A
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German (de)
English (en)
Other versions
EP3085503A1 (fr
Inventor
Wilhelm Gerstberger
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.)
Engelhardt Druck GmbH
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Engelhardt Druck GmbH
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Publication date
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Publication of EP3085503A1 publication Critical patent/EP3085503A1/fr
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Publication of EP3085503B1 publication Critical patent/EP3085503B1/fr
Not-in-force 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures

Definitions

  • the present invention relates to a puncture punching method for producing labels in a butterfly shape or in a cross shape, wherein the labels are in particular made of paper.
  • the present invention addresses the problem of producing butterfly or cross-shaped labels, such as those used as so-called in-mold labels in the manufacture of margarine cups or cups for other spreads.
  • the shape of these labels is referred to as a cross shape or butterfly shape because there are four incisions so that when viewed over the label, the impression is created that it looks like a butterfly or cross-shaped.
  • the incisions have a so-called undercut, that is, they are wider at their widest point than at their mouth opening. Because of this, such labels have not heretofore been able to be produced in the punch through punching process.
  • a stack of sheet-like punched material is pressed against the cutting edge of a frame-shaped punching knife.
  • the frame-shaped punching knife receives the stamped material in its interior, that is, the punching waste is located on the outside of the punching knife.
  • the stack of arcuate punched material and the punching blade are moved relative to each other.
  • a stack of sheeted stock typically comprises 1,000 sheets; Of course, other stack sizes are known and workable.
  • a pre-punching operation is performed in which a label is made having at least rounded cutouts instead of the final cutout shape.
  • the final shape of the label also referred to as the final shape of the label.
  • the cutout is also completely produced, of which only a partial area has been punched during the pre-punching process.
  • the puncture punching corresponds to the in EP 0495379 A1 described process.
  • the label to be produced was produced in two punching operations.
  • the pre-punching process basically cuts the shape of the label in its final shape. However, it has only rounded cutouts instead of the final cutout shape. Only in the second punching process, the re-punching process, is the final shape of the label, the so-called final shape of the label, produced by punching only the cutout to its final shape.
  • a follow-up cutting knife to be provided.
  • the follow-up knife has two areas. In a first area with which the punching knife first reaches the punched material during the punching process, the pre-punching process is carried out. With the second area, which reaches the punched material during the punching process, after it has passed through the pre-punching, the re-punching process is performed. In this way, it is possible to make a label in a butterfly shape or a cross shape in a single punch puncture stroke. It was also shown that punching waste transported conveyor belts as in EP 0 495 379 A1 are not necessary in this way; As already explained, the previously known construction was not applicable at all for the special room situation in butterfly and cross-hatch labels.
  • paper labels in butterfly or cross shape can also be produced by the puncture punching method.
  • the time-consuming reworking of the cut edges for removing cutting dust, as is necessary in the rotary punching process, is eliminated.
  • a stack of thousands, for example can now be punched in a single stroke.
  • the individual sheets can be exploited much better, since the pile can be prepared in advance according to the puncture punching method so that as little punching waste occurs.
  • the setup times for the puncture punching process are relatively low, at least in comparison to the rotary punching process.
  • the inventive method achieves at least a doubling of the number of labels that can be produced per unit of time.
  • the width of the outlet opening of the cutout which is present in the final shape of the label is at least approximately completely opened by the pre-punching process.
  • the maximum width is already cut at the outlet opening of the cutout.
  • the shape of the cutout in the pre-punching process is therefore such that as far as possible the entire width of the final outlet opening is cut.
  • the shape of the cutout should be rounded during the pre-punching process.
  • the shape should preferably be such that the rounded section of the pre-punching process has two legs or two legs can be applied, which run convergently viewed from the outlet opening.
  • the two legs of the rounded section produced by the pre-punching operation converge towards each other. Consequently, a shape is produced which, in the manner of a truncated cone or cone, has its greatest width in the region of the outlet opening and narrows towards the rear, in the direction of the depth of the cutout.
  • the two legs extend in a convergence angle of between 20 and 30 °; if the legs are extended so far that they meet, then the included angle between 20 and 30 °.
  • a ratio of the length of the punching line to the width of the outlet opening of about 4 to 5 on.
  • the length of the punching line that is, the distance of the cutout, starting from one side of the outlet opening and ending on the other side of the outlet opening, is approximately 4 to 5 times longer than the width of the outlet opening.
  • this ratio is reduced to about 2 to 3 by the two punching operations.
  • the cuts are made during the pre-punching process and during the re-punching process so that the punching line is approximately 2 to 3 times longer than the width of the outlet opening.
  • the full width of the outlet opening is preferably already developed during the pre-punching process. Due to the undercut shape, it follows that each cutout in the final shape does not have its widest point at the exit opening, but instead has the widest point in the cutout inside area. According to a further preferred aspect of the invention, the cut is created in the pre-punching process so that the cutout is opened so far that it reaches the region of the maximum width of the cutout in its final shape after the pre-punching process.
  • the full width is not opened up by the pre-punching process, because the largest width of the cut-out effected by the pre-punching process is in the region of the outlet opening, but the cutout of the pre-punching process extends so far into the cut-out in its final form that the cut-out its widest part is partially developed.
  • the cut-out for the pre-punching process is laid in such a way that surface areas which are undercut-free are punched both during the pre-punching process and during the re-punching process.
  • FIG. 1 shows a label 1 in its final form. As can be seen, it has four cutouts 2; to distinguish them from each other by 2, 2 ', 2 "and 2''' in the detail of the FIG. 2 a single section 2 is shown.
  • Characteristic of a label 1 in the form of a butterfly or in a cross shape is that the cutouts 2 have a so-called undercut.
  • An undercut is an angle with a negative amount. In the presentation of the FIG. 2 this negative angle is registered and designated with - ⁇ .
  • the greatest width of the cutout 2 is not achieved at the outlet opening 3 of the cutout 2, but in the interior region 4 of the cutout 2 FIG. 2 this largest width is registered with B.
  • the width of the outlet opening 3, which can also be referred to as a mouth opening, is denoted by b.
  • FIG. 3 shows a plan view of the label after the pre-punching process.
  • the label is referred to after the pre-punching process with 1V.
  • the label 1V is an intermediate product.
  • the re-stamping process converts the label 1V into the label 1 (cf. FIGS. 1 and 3 ).
  • the final form of the label 1 is already produced per se in the exemplary embodiment described here, but not the final shape of the cutout 2.
  • the final shape of the cutout 2 is only produced by the re-punching process.
  • a rounded cutout is produced, but not the final shape of the cutout 2.
  • the cut-out produced by the pre-punching process is designated by the reference numeral 20.
  • the four individual sections are distinguished accordingly as 20, 20 ', 20 "and 20' ''.
  • FIG. 4 is to be seen in the detail view, as the cutting guide during pre - punching in Area of section 2 or 20 is created.
  • the cutout 20, which is produced by the pre-punching process, is rounded, that is to say it has a rounded tip 21.
  • the two legs 22 and 23 of the cutout 20 are convergent, that is, they run towards each other, each viewed from the outlet opening 3. In the present case, the two legs enclose an angle ⁇ of about 26 °.
  • the width b of the outlet opening 3 through the cutout 20, that is, by the pre-punching process, already fully developed. The largest width B is not developed by the pre-punching process, but is only in the second step, caused by the re-punching.
  • the cutout 20 has already penetrated so far into the inner region 4 of the cutout 2 that its tip 21 reaches the region in which the greatest width B of the cutout 2 is located.
  • the length of the punching line of the cutout 2 - that is, the length of the line, if one follows from the point C to the point H on the point F of the outer contour of the section 2 (see also the double arrow in FIG. 2 ) - in the present example is about 54 mm.
  • the outlet opening 3 has a width b of about 12.5 mm.
  • the punching line of the pre-punching that is, if one follows from the point C to the point H on the point E of the outer contour of the cutout 20, has an overall length of about 32 mm.
  • the ratio of the length of the cut line of the cutout 2 to the width of the outlet opening is thus approximately 4.3, whereas the ratio of the length of the cut line of the cutout 20 to the width of the outlet opening is approximately 2.6.
  • only one punching line has to be created, which extends from the point D to the point H over the point F, which in the present example is approximately 44 mm long.
  • results from the pre-punching process for the punching waste during re-punching a re-punching outlet 203 results from the pre-punching process for the punching waste during re-punching a re-punching outlet 203, the in FIG. 4 is entered as a diagonal between the points D and H in dotted line.
  • the re-punch outlet 203 has a length of about 16 mm.
  • the ratio of the length of the punching line of this cut-out part - denoted by the reference numeral 200 - to the length of the re-punch outlet opening 203 is therefore approximately 2.7.
  • Cut-out area - which are each considered unproblematic in punch-through punching process, are punched.
  • the two cutout areas 20 and 200 are each undercut-free in each case.
  • both cutout portions, the cutout portions 20 and 200 are rounded, that is, the tip 21 of the cutout 20 and the tip 221 of the cutout portion 200 are rounded.
  • Both sections each have converging legs. Both the legs 22 and 23 of the cutout 20 and the legs 222 and 223 of the cutout region 200 run towards each other.
  • the cut-out regions 20 and 200 therefore, each considered individually, have a favorable shape for the punch-through punching process.
  • Both pre-punching step and re-punching step are carried out according to the invention with a single punching knife, a so-called follow-up knife.
  • the knife has a first area, which is closer to the stamped material, with which it is pre-punched.
  • the final shape of the label 1 is punched with the first region, but not the final shape of the cutout 2.
  • the second area of the punching knife which is farther away from the punching material during the punching stroke than the first area, is stamped.
  • the complete contours of the label 1 are produced only by the re-punching process.
  • pre-punching at least the cutout 20 is generated accordingly.
  • even more portions of the final shape of the label 1 can be made or it is punched an intermediate stage, z. B. by the cutout 20 and the central region 5, 5 'is punched, the wing region 6, 6', however, is not yet cut to its final shape.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Claims (10)

  1. Procédé de poinçonnage de découpe pour la fabrication d'étiquettes (1) en forme de papillon ou en forme de croix, en particulier d'étiquettes en papier, cependant qu'une pile de matériau à découper en forme de feuilles est pressée contre un tranchant d'un couteau de découpage en forme de cadre qui reçoit le matériau à découper dans son espace intérieur et que la pile de matériau à découper en forme de feuilles et le couteau de découpage sont déplacés l'un par rapport à l'autre si bien que le processus de découpe est provoqué et que des déchets sont refoulés sur le côté extérieur du couteau de découpage, cependant que deux opérations de découpe sont exécutées pour fabriquer une forme finale de l'étiquette, à savoir une opération de prédécoupe pour la fabrication au moins de parties découpées arrondies (20, 20', 20", 20''') et une opération de recoupe pour la fabrication de la forme finale de l'étiquette, caractérisé en ce qu'un couteau de découpage ultérieur est mis à disposition qui exécute l'opération de prédécoupe dans une première zone qui atteint tout d'abord le matériau à découper et qui exécute l'opération de recoupe dans une seconde zone qui atteint le matériau à découper seulement après l'opération de prédécoupe si bien que l'étiquette est fabriquée dans une seule course de poinçonnage de découpe.
  2. Procédé de poinçonnage de découpe selon la revendication 1, caractérisé en ce que l'étiquette (1) est fondamentalement fabriquée dans sa forme finale par l'opération de prédécoupe à l'exception des parties découpées (2, 2', 2", 2''') qui sont découpées de forme arrondie (20, 20', 20", 20''') sans que la forme finale soit découpée.
  3. Procédé de poinçonnage de découpe selon la revendication 1 ou 2, caractérisé en ce que la forme finale présente des parties découpées (2, 2', 2", 2''') qui ont chacune une largeur (b) d'une ouverture de sortie (3) et que la largeur (b) de l'ouverture de sortie (3) est au moins approximativement entièrement découpée lors de l'opération de prédécoupe.
  4. Procédé de poinçonnage de découpe selon l'une des revendications précédentes, caractérisé en ce que chaque partie découpée arrondie (20, 20', 20", 20''') produite par l'opération de prédécoupe a deux montants (22, 23) qui s'étendent en convergeant, ceci étant vu depuis l'ouverture de sortie (3).
  5. Procédé de poinçonnage de découpe selon la revendication 4, caractérisé en ce que les deux montants (22, 23) s'étendent dans un angle de convergence entre 20° et 30°.
  6. Procédé de poinçonnage de découpe selon l'une des revendications précédentes, caractérisé en ce que 50 à 70 % d'une surface de la partie découpée (2, 2', 2", 2''') sont couverts par l'opération de prédécoupe.
  7. Procédé de poinçonnage de découpe selon l'une des revendications précédentes, caractérisé en ce qu'une partie découpée (2, 2', 2", 2''') de la forme finale de l'étiquette (1) a un rapport d'une longueur d'une ligne de découpe à la largeur de l'ouverture de sortie (3) d'environ 4 à 5 et que, lors des deux opérations de découpe, le rapport de la longueur de la ligne de découpe et de la largeur de l'ouverture de sortie (3, 203) est respectivement réduit à environ 2 à 3.
  8. Procédé de poinçonnage de découpe selon l'une des revendications précédentes, caractérisé en ce que la partie découpée (20, 20', 20", 20''') de l'opération de prédécoupe est si profonde qu'une largeur maximale (B) de la partie découpée (2, 2', 2", 2''') de la forme finale est atteinte.
  9. Procédé de poinçonnage de découpe selon la revendication 1 ou 2, caractérisé en ce que la largeur (b) de la partie découpée (20, 20', 20", 20''') à une ouverture de sortie (3) après l'opération de prédécoupe correspond à la largeur (b) de la partie découpée (2, 2', 2", 2''') à l'ouverture de sortie (3) de la forme finale et qu'une profondeur de la partie découpée (20, 20', 20", 20''') après l'opération de prédécoupe correspond au moins à la profondeur de la partie découpée (2, 2', 2", 2''') de la forme finale à son endroit le plus large (B).
  10. Procédé de poinçonnage de découpe selon l'une des revendications précédentes, caractérisé en ce que la partie découpée (2, 2', 2", 2''') dans la forme finale présente au moins une contre-dépouille (α) et qu'une surface des parties découpées à découper par poinçonnage (2, 2', 2", 2''', 20, 20', 20", 20''') pour les deux opérations de découpage est répartie de telle manière que des formes de partie découpée à découper par poinçonnage sont exemptes de contre-dépouilles.
EP16166291.1A 2015-04-23 2016-04-21 Procede de poinçon de perforation pour fabrication d'etiquettes Not-in-force EP3085503B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015106244.5A DE102015106244A1 (de) 2015-04-23 2015-04-23 Durchstoßstanzverfahren zur Herstellung von Etiketten

Publications (2)

Publication Number Publication Date
EP3085503A1 EP3085503A1 (fr) 2016-10-26
EP3085503B1 true EP3085503B1 (fr) 2017-12-27

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EP16166291.1A Not-in-force EP3085503B1 (fr) 2015-04-23 2016-04-21 Procede de poinçon de perforation pour fabrication d'etiquettes

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DE (1) DE102015106244A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410781A1 (de) * 1974-03-07 1975-09-11 Klahold Ohg Heinrich Stanzmesser fuer folgeschnitte
DE4100324C1 (fr) 1991-01-08 1992-07-30 Carl Neumeister Gmbh, 8581 Neudrossenfeld, De
CH689275A5 (de) * 1994-10-20 1999-01-29 Blumer Maschbau Ag Vorrichtung und Verfahren zum Stanzen eines Stapels.
DE102008059934B4 (de) * 2008-12-02 2011-06-16 Reiplinger Gmbh & Co. Kg Stanzstempel und Verwendung des Stanzstempels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
DE102015106244A1 (de) 2016-10-27
EP3085503A1 (fr) 2016-10-26

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