EP2572843B1 - Procédé d'alignement d'un outil d'estampillage et station de découpage avec plaque de recouvrement pouvant être aspirée - Google Patents

Procédé d'alignement d'un outil d'estampillage et station de découpage avec plaque de recouvrement pouvant être aspirée Download PDF

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Publication number
EP2572843B1
EP2572843B1 EP12180978.4A EP12180978A EP2572843B1 EP 2572843 B1 EP2572843 B1 EP 2572843B1 EP 12180978 A EP12180978 A EP 12180978A EP 2572843 B1 EP2572843 B1 EP 2572843B1
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EP
European Patent Office
Prior art keywords
punching
sheet
plate
station
machine
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.)
Active
Application number
EP12180978.4A
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German (de)
English (en)
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EP2572843A1 (fr
Inventor
Markus Möhringer
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.)
Masterwork Machinery Co Ltd
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Masterwork Machinery Co Ltd
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Publication date
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Publication of EP2572843A1 publication Critical patent/EP2572843A1/fr
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Classifications

    • 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
    • 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
    • B26F2001/4409—Cutters therefor; Dies therefor having die balancing or compensating means

Definitions

  • the invention relates to a method for trimming a punching tool according to claim 1, a punching station according to claim 4 and a flatbed sheet punching machine according to claim 9.
  • punching As punching the cutting is referred to with closed geometric blank forms that can be circular, oval or polygonal and imaginary shapes of all kinds. Also the practices practiced in print finishing, such as punching with punch, corner punching and register punching are counted to this area.
  • the punching takes place against a punching pad or against stamp, in some cases it is also shearing operations.
  • Packaging materials made of paper, cardboard, cardboard or corrugated board are mainly punched in sheet format. Even materials such as film (in-mold), various thin plastics or aluminum foil can be processed accordingly. When punching but also creasing lines or blind embossing can be introduced into the benefit. This complex process makes it indispensable to punch the sheets individually.
  • Such a flat bed punch is for example from the DE 30 44 083 A1 known.
  • the two tables are equipped with cutting and scoring tools or corresponding counter tools with which punched out of the cyclically guided between the table surface sheets the benefits and at the same time pressed the necessary for clean folding grooves. In the subsequent breakout the waste is removed by machine tools. Depending on the equipment of the machine finally the punched benefits can be separated in a designatedWhentrenn arthritis.
  • the punching pressure in the sheet punching and embossing machine must be adjustable according to the sheet being processed.
  • punching force adjusting devices can only be adjusted globally, i. based on the entire surface of the crucible. Due to the design, however, an uneven punching force distribution over the surface of the crucible is present in all stamping and embossing machines according to the prior art.
  • the punching force is introduced via individual force introduction points and thus does not affect the entire crucible surface.
  • there is a deformation of upper and lower table which in turn results in an uneven punching pressure distribution over the surface of the crucible.
  • height differences of the punching or Rillmesser, as well as the wear of the knife cause an uneven punching pressure distribution.
  • the uneven punching pressure in turn causes an unclean cutting of the cutting blade of the punching tool.
  • the usual procedure when trimming a punching tool is the following: after a test sheet has been punched and it is recognizable at which points a dressing is required, the punching tool is pulled out of the sheet punching station, the cover plate, which rests on the punching plate, removed by hand and set aside posed. Thus, the punching plate is accessible and adhesive tape can be pasted behind or contoured Zurichtebogen be deposited. After trimming the cover plate is placed back on the punching plate and pushed the punch back into the punching station.
  • a disadvantage of this procedure according to the prior art is the required handling of the cover plate. In large-format punching machines, the cover plate is unwieldy and heavy, which is a burden for the machine operator. Another disadvantage is the time required for handling the cover plate. Also problematic can be the interim storage of Cover plate during the trimming process, since the cover must be placed securely in order to avoid damage to the plate.
  • the cover plate must be easy to remove, so that it can be easily replaced when worn and so that when using the punching station for hot stamping can be easily removed to create space for the hot stamping unit.
  • the object of the present invention is therefore to describe a method for trimming a punching tool and to provide a sheet punching station as well as a flatbed sheet punching machine, in each case reducing the disadvantages of the prior art and enabling a less complex trimming of a punching tool.
  • the inventive method is used for trimming a punching tool of a punching station, which has an upper table and a lower table.
  • the sheet punching station is part of a flatbed sheet punching machine.
  • the punching tool has a punching plate, to which punching blades are fixed, and a cover plate resting on the punching plate.
  • the following steps are carried out according to the invention: in a first step, punching of a test sheet takes place in the punching station, wherein this test sheet and thus the trimming need can be assessed. Subsequently, fixing the cover plate to the upper table.
  • the punching plate can be extended from its working position between the upper table and the lower table in a trimming position, while the cover plate remains in the sheet punching station at its position below the upper table.
  • the trimming plate After the trimming plate has been trimmed, it can be moved back into its working position and the punching tool is ready for use. Then, the fixation of the cover plate can either be canceled or maintained during the stamping process.
  • the fixing of the cover plate to the upper table by mechanical clamping and / or by hydraulic clamping and / or by magnetic holding and / or by pneumatic holding.
  • the various clamping or holding principles can be used alternatively or mutually complementary.
  • the fixing is done by pneumatic holding and to the cover plate, a negative pressure is applied for this purpose.
  • This embodiment has the advantages that, in contrast to mechanical clamping no additional, space-requiring mechanical components must be used and that, in contrast to hydraulic clamping no hydraulic lines must be laid and that in contrast to magnetic holding the fixing is made possible regardless of the material of the cover , Another advantage is obtained when a vacuum generator or a vacuum source is already present in the sheet punching station, since this is used for other functions.
  • the invention also relates to the sheet punching station of a flatbed sheet punching machine, which is particularly suitable for carrying out the method described above.
  • the punching station has an upper crucible and a lower crucible, wherein one of the two crucibles is stroke-moved and wherein a punching tool is connected to the upper crucible.
  • the punching tool has a punching plate with punching blades and a cover plate arranged between the punching plate and the upper pot.
  • the upper crucible is provided with suction openings and the sheet punching station has a vacuum source or a vacuum generator, which is connected via lines to the suction openings of the upper crucible.
  • a suction air is provided by the vacuum source or the vacuum generator, by means of which the cover plate can be kept in its position below the upper crucible during trimming.
  • the punching plate experiences no suction and can be easily pulled out for trimming from its working position between the upper crucible and lower crucible. It is advantageous if the suction openings are adapted in the upper crucible so that a suction force acts exclusively on the cover plate.
  • the punching plate is held by a closing frame, which allows easy handling and easy positioning of the punching plate.
  • the vacuum source or the vacuum generator also provides suction air at the lower pot, which serves for sucking a punching plate during the punching operation.
  • this has a machine control and an operator interface for controlling the suction air.
  • the machine operator for example, whether the cover plate should remain in the sheet punching station during the trimming process, or whether it should be extended together with the stamping plate.
  • the invention also relates to a flatbed sheet punching machine having a punching station as described above for carrying out a method for trimming a punching tool as described above.
  • FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking,haptines and storing sheets of paper, cardboard, plastic and the like is shown.
  • the punching and embossing machine 100 has a feeder 1, a punching station 2, a breakout station 3 and a boom 4 with storage and respecttrennstation, which are supported by a common machine housing 5 and enclosed and driven by a main drive 17. From one side, the so-called operator side, the processing stations 2, 3, 4 are accessible; on the opposite side, the so-called drive side, there is the drive train of the sheet punching and embossing machine 100.
  • a machine control 15 controls the processes within the punching machine 100.
  • the sheet 6 are separated by a feeder 1 from a stack, fed to the sheet transport system 7 and from on gripper bars of a gripper carriage. 8 gripped grippers taken at its front edge and pulled in the sheet transport direction B intermittently through the various stations 2, 3 and 4 of the punching and embossing machine 100.
  • the sheet transport system 7 has a plurality of gripper carriages 8, so that a plurality of sheets 6 can be processed simultaneously in the various stations 2, 3 and 4.
  • the gripper carriage 8 can be driven by a chain drive or in an alternative embodiment by an electromagnetic linear drive with traveling wave motors, such as in the DE 20 2007 012 349 U1 described.
  • the punching station 2 consists of a lower crucible, a so-called. Subtable 9, and an upper crucible, a so-called. Obertisch 10.
  • the upper table 10 is vertically reciprocally mounted and provided with an upper tool 30 with punching and Rillmessern.
  • the lower table 9 is fixedly mounted in the machine frame and provided with a counter-plate 20 to the punching and Rillmessern. Alternatively, the upper table 10 fixed and the lower table 9 may be moved.
  • embossing embossing tools, in particular in the form of so-called embossing dies, are used instead of the punching and scoring tools.
  • the gripper carriage 8 transports the sheet 6 from the punching and embossing station 2 in the subsequent breaking station 3, which is equipped with breakout tools 21, 23.
  • the breaking station 3 the waste pieces 11 which are not required are pushed out of the sheet 6 downward with the aid of the breaking-out tools 21, 23, whereby the waste pieces 11 fall into a carriage-like container 12 inserted below the station.
  • the boom 4 may also include a pallet 13, on which the individual sheets 6 or benefits in the form of a stack 14 are stacked, so that after reaching a certain stack height, the pallet 13 with the Sheet stack 14 can be moved away from the area of the punching and embossing machine 100.
  • auxiliary stacking devices may be used.
  • FIG. 2a shows the situation when trimming according to the prior art.
  • the punching tool 30 is moved out of the punching station 2 from a working position between the upper table 10 and the lower table 9 of the punching station 2 in the direction a. So that the back of the punching plate 31 is accessible and can be glued with adhesive tape or covered with trimming sheet, the cover plate 32 must be removed as shown by arrow e and set aside.
  • FIGS. 2b to d the situation when dressing according to the invention is shown.
  • the upper table 10 is provided for this purpose with suction openings 41, which are connected via lines to a vacuum generator or a vacuum source 40. Thereby, a suction air is provided at the suction openings 41, which causes a suction force S on the cover plate. If the punching plate 31 are to be dressed, the suction air is activated and the suction force on the cover plate 32 is effective. The cover plate 32 is pulled against the upper table 10 and held there in position. Then the punching plate 31 can be pulled out of its working position between the upper table 10 and lower table 9 in the direction of arrow a.
  • the suction force during retraction a of the punching 30 remain disabled, so that, if desired, the punching plate 31 can be moved out together with the cover plate 32. This may be necessary, for example, if the cover plate 32 present in the stamping station 2 is to be replaced by another cover plate 32.

Claims (9)

  1. Procédé d'ajustage ou d'alignement d'un outillage de découpage-poinçonnage (30) d'un poste de découpage-poinçonnage de feuilles (2) avec une table supérieure (10) et une table inférieure (9) d'une machine de découpage-poinçonnage de feuilles à banc plat (100), l'outillage de découpage-poinçonnage (30) comprenant une plaque de découpage-poinçonnage (31) avec des lames de découpage-poinçonnage et une plaque de recouvrement (32), le procédé comprenant les étapes suivantes :
    a) découpage-poinçonnage d'une feuille de test dans le poste de découpage-poinçonnage de feuilles (2)
    b) fixation de la plaque de recouvrement (32) à la table supérieure (10)
    c) sortie de la plaque de découpage-poinçonnage (31) de sa position de travail entre la table supérieure (10) et la table inférieure (9), vers une position d'ajustage ou d'alignement
    d) ajustage ou alignement de la plaque de découpage-poinçonnage (31)
    e) rentrée de la plaque de découpage-poinçonnage (31) dans sa position de travail.
  2. Procédé d'ajustage ou d'alignement selon la revendication 1,
    caractérisé
    en ce que la fixation à l'étape b) s'effectue par serrage mécanique et/ou serrage hydraulique et/ou maintien magnétique et/ou maintien pneumatique.
  3. Procédé d'ajustage ou d'alignement selon la revendication 2,
    caractérisé
    en ce que la fixation à l'étape b) est effectuée par maintien pneumatique et une dépression est appliquée à la plaque de recouvrement.
  4. Poste de découpage-poinçonnage de feuilles (2) d'une machine de découpage-poinçonnage de feuilles à banc plat (100), notamment destiné à la mise en oeuvre du procédé selon la revendication 3, comprenant une platine supérieure (10) et une platine inférieure (9), l'une des deux platines (9, 10) étant déplaçable en montée descente, et comprenant, par ailleurs, un outillage de découpage-poinçonnage (30), qui est relié à la platine supérieure (10) et possède une plaque de découpage-poinçonnage (31) avec des lames de découpage-poinçonnage et une plaque de recouvrement (32),
    la plaque de recouvrement (32) étant agencée entre la plaque de découpage-poinçonnage (31) et la platine supérieure (10),
    caractérisé
    en ce que la platine supérieure (10) est munie d'ouvertures d'aspiration (41) et le poste de découpage-poinçonnage de feuilles (2) possède une source de dépression ou un générateur de dépression (40), qui est relié, par l'intermédiaire de conduites (42), aux ouvertures d'aspiration (41) de la platine supérieure (10), en vue d'aspirer la plaque de recouvrement (32) pendant l'ajustage ou l'alignement de l'outillage de découpage-poinçonnage (30), la plaque de découpage-poinçonnage (31) ne subissant aucune force d'aspiration (S).
  5. Poste de découpage-poinçonnage de feuilles selon la revendication 4,
    caractérisé
    en ce que les ouvertures d'aspiration (41) sont agencées dans la platine supérieure (10) de manière telle qu'une force d'aspiration (S) agisse uniquement sur la plaque de recouvrement (32).
  6. Poste de découpage-poinçonnage de feuilles selon l'une des revendications 4 à 5,
    caractérisé
    en ce que la plaque de découpage-poinçonnage (31) est maintenue par un cadre de fermeture.
  7. Poste de découpage-poinçonnage de feuilles selon l'une des revendications 4 à 6,
    caractérisé
    en ce que la source de dépression ou le générateur de dépression (40) fournit un air d'aspiration au niveau de la platine inférieure (9), pour aspirer une tôle de découpage-poinçonnage (20).
  8. Poste de découpage-poinçonnage de feuilles selon l'une des revendications 4 à 7,
    caractérisé
    en ce que le poste de découpage-poinçonnage de feuilles (2) possède une commande de machine et une interface utilisateur (15), pour la commande de l'air d'aspiration.
  9. Machine de découpage-poinçonnage de feuilles à banc plat (100) comprenant un poste de découpage-poinçonnage de feuilles (2) selon l'une des revendications 4 à 8.
EP12180978.4A 2011-09-21 2012-08-20 Procédé d'alignement d'un outil d'estampillage et station de découpage avec plaque de recouvrement pouvant être aspirée Active EP2572843B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011113993A DE102011113993A1 (de) 2011-09-21 2011-09-21 Verfahren zum Zurichten eines Stanzwerkzeuges und Bogenstanzstation mit ansaugbarer Abdeckplatte

Publications (2)

Publication Number Publication Date
EP2572843A1 EP2572843A1 (fr) 2013-03-27
EP2572843B1 true EP2572843B1 (fr) 2015-11-04

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EP12180978.4A Active EP2572843B1 (fr) 2011-09-21 2012-08-20 Procédé d'alignement d'un outil d'estampillage et station de découpage avec plaque de recouvrement pouvant être aspirée

Country Status (5)

Country Link
EP (1) EP2572843B1 (fr)
CN (1) CN103009433B (fr)
DE (1) DE102011113993A1 (fr)
ES (1) ES2560379T3 (fr)
TW (1) TWI579127B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107009427A (zh) * 2017-05-11 2017-08-04 昆山佑威光电材料有限公司 排废改进的套冲模切机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112917581B (zh) * 2021-01-19 2022-04-19 浙江天振科技股份有限公司 一种pvc塑胶地板制造加工工艺

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044083C2 (de) 1980-11-24 1990-05-10 Bobst S.A., Lausanne Stanzeinrichtungen für Stanzautomaten zum Stanzen von Bögen aus Papier, Pappe u. dgl.
DE3620853A1 (de) * 1986-06-21 1987-12-23 Linden Alfred Kg Verfahren zur loesbaren befestigung einer stanzgegenplatte an einer stanzmaschine sowie stanzmaschine
DE8810331U1 (fr) * 1988-08-16 1988-09-29 Delkeskamp Kg, 4577 Nortrup, De
CH682314A5 (fr) * 1989-10-12 1993-08-31 Bobst Sa
DE19608050A1 (de) * 1996-03-02 1997-09-04 Willi Grassner Vorrichtung für mechanisiertes Zurichten von Bandstahlschnittformen
DE29813528U1 (de) * 1998-07-30 1998-10-22 Heinz Gaubatz Modell Und Forme Schneidvorrichtung
DE202004007719U1 (de) * 2003-09-04 2004-09-23 Metall + Plastic Gmbh Vorrichtung zum Stanzen von Verpackungselementen o.dgl.
DE202007012349U1 (de) 2006-07-26 2007-12-13 Heidelberger Druckmaschinen Ag Bogenstanz- und -prägemaschine mit Passerausrichtung
DE102009056169A1 (de) * 2009-11-27 2011-06-01 Heidelberger Druckmaschinen Ag Verfahren zum Zurichten von Werkzeugen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107009427A (zh) * 2017-05-11 2017-08-04 昆山佑威光电材料有限公司 排废改进的套冲模切机

Also Published As

Publication number Publication date
EP2572843A1 (fr) 2013-03-27
TW201318800A (zh) 2013-05-16
CN103009433A (zh) 2013-04-03
CN103009433B (zh) 2016-08-10
TWI579127B (zh) 2017-04-21
ES2560379T3 (es) 2016-02-18
DE102011113993A1 (de) 2013-03-21

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