EP0615910B1 - Dispositif pour découper à la matrice ou plusieurs récipients dans une bande plastique - Google Patents

Dispositif pour découper à la matrice ou plusieurs récipients dans une bande plastique Download PDF

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Publication number
EP0615910B1
EP0615910B1 EP94102259A EP94102259A EP0615910B1 EP 0615910 B1 EP0615910 B1 EP 0615910B1 EP 94102259 A EP94102259 A EP 94102259A EP 94102259 A EP94102259 A EP 94102259A EP 0615910 B1 EP0615910 B1 EP 0615910B1
Authority
EP
European Patent Office
Prior art keywords
knives
cutting
plate
film
cut
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.)
Expired - Lifetime
Application number
EP94102259A
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German (de)
English (en)
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EP0615910A1 (fr
Inventor
Gerd Wachsmuth
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.)
G Wachsmuth & Co Werkzeugbau GmbH
Original Assignee
G Wachsmuth & Co Werkzeugbau GmbH
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 G Wachsmuth & Co Werkzeugbau GmbH filed Critical G Wachsmuth & Co Werkzeugbau GmbH
Publication of EP0615910A1 publication Critical patent/EP0615910A1/fr
Application granted granted Critical
Publication of EP0615910B1 publication Critical patent/EP0615910B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/065—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting by punching out
    • 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
    • B26F2001/449—Cutters therefor; Dies therefor for shearing, e.g. with adjoining or abutting edges

Definitions

  • the invention relates to a device for punching single and multiple containers from plastic films, in particular films with a high elongation at break, for example polypropylene films, according to the preamble of claim 1.
  • the tensile strength of the PS film is 45 to 65 N / mm2, while that of the PP film is 21 to 37 N / mm2.
  • the elongation at break of the PS film is 3 to 4% PP film, however, 20 to 800%.
  • the PS film is hard and brittle and can easily be broken.
  • the PP film is tough-elastic and can hardly be broken and can only be torn with great effort.
  • the PS film Since part of the material is cut and the rest broken during punching, the PS film is easy to punch.
  • Another problem is that the multiple containers are interconnected so that individual containers can be broken off from the multiple pack by the end user. This is very easy to do with PS films due to their brittleness by simply anchoring the film with a chisel-shaped notch stamp. Due to the predetermined break line in the film, the PS film breaks off slightly at this point. With the PP film, however, breaking off is not possible due to the high elongation at break as with the PS film.
  • the tool according to the invention it is possible to manually separate individual containers from a multiple pack without aids, since the tough plastic film, for example PP film, can be cut at the separation point to a residual amount of 0.03 mm to 0.05 mm, as a result of which the containers are connected to each other only by a thin film and this film is additionally cut at both ends. This makes it relatively easy to separate a container despite the high toughness of the film. A cover film is completely cut through.
  • the tough plastic film for example PP film
  • the punching technique for PS foils is not suitable for PP foils.
  • the object of the present invention is therefore to design a tool for punching containers from plastic films with high elongation at break, in particular from polypropylene film, so that, on the one hand, individual containers can also be effortlessly separated from multiple packs without aids and, on the other hand, the optional manufacture of single or multiple packs with different numbers of containers is possible without expensive disassembly and retrofitting of the tool.
  • the tool according to the invention it is possible to manually separate individual containers from a multiple pack without aids, since the tough plastic film, for example PP film, except for one at the separation point
  • the remaining amount of 0.03 mm to 0.05 mm can be cut, whereby the containers are connected to one another only by a thin film and this film is also cut at the two ends. This makes it relatively easy to separate a container despite the high toughness of the film. A cover film is completely cut through.
  • the tool according to the invention it is possible to produce either single or multiple packs; the change from single to multiple containers is done automatically by the press control. This can reduce the time for a change from several hours to a few seconds. Possible errors caused by the conversion and the resulting damage to the tool can be prevented.
  • FIG. 1 shows the use of chisel-shaped notch stamps 60 and 62 according to the prior art for separating and anchoring containers in a container film 64 made of polystyrene, which is also provided with a cover film 66 also made of polystyrene or aluminum.
  • a container film 64 made of polystyrene
  • a cover film 66 also made of polystyrene or aluminum.
  • FIG. 2 of the drawing shows a tool 2 according to the invention, which consists of a base plate 4, onto which a cutting plate 6 is screwed, from a first punch holding plate 8, under which the first knife 10 for the Cutting lines are attached, which always cut through without conversion, further from a second stamp holder plate 12, to which second knives 14 are fastened, which either cut or only cut, and consists of a head plate 16, to which star stamps 18 are fastened, which fasten the corners of Cut the containers to be separated (not shown) with a fillet 19.
  • All plates 4, 6, 8, 12, 16 are always fixed to one another in the correct position via corresponding guide units.
  • the two punch holding plates 8 and 12 are each held by spacing units 20 and 22 in relation to the head plate 16 such that the lower cutting edges of all the star punches and knives lie in one plane when the tool is moved apart.
  • compression springs 24 and 25 which, as described later, absorb the respective cutting forces and serve to adjust the preload.
  • Fixed or adjustable stops 26 and 28 are located between the base plate 4 and the two punch holding plates 8 and 12, which limit the immersion depths of the corresponding knives to the cutting plate when the tool is closed.
  • All of the star stamps 18 and the knives 10 which cut through the film without any change i.e. without corresponding adjustment of the stops 26
  • the knives 14, which optionally cut through the film or only cut in, have on the underside recessed cut edges 32, which are hollow or concave in the drawing inwards or upwards, with a central, essentially straight region 32 ', cf. Fig. 3.2.
  • a container film 31 with a cover film 33 are also shown schematically in FIGS. 3.1 and 3.2 in order to show the respective cutting method of the knives and punches more precisely.
  • a plurality of recessed cut openings 34 and raised cut openings 36 are alternately formed in a checkerboard fashion on the cutting plate 6, cf. 2 and 4, so that alternately a container is cut into the cutting plate 6 and the other container remains on the cutting plate 6.
  • the reference numeral 35 denotes the openings in the cutting plate for the container.
  • the knives cut out the containers each at the recessed cut openings 34.
  • the star stamps 18 cut the rounded corners of the containers in two stages, one part each on the raised cut openings 36 and the rest on the recessed cut openings 34, see FIG. 4.
  • the head plate 16 When the press continues to drive, the head plate 16 is moved further down until it rests on the second upper punch holding plate 12. As a result, the star punches 18 are extended further relative to the knives and cut the remaining roundings 19 ′′ of the container corners in the further course of the pressing movement through, whereby all containers are cut from the container film 31 and can be removed as an individual container from the tool.
  • the rounding cutouts fall out of the tool train via drop openings 56 formed in the cutting plate 6 and base plate 4.
  • FIG. 9 shows the associated film flow chart with the pages 27 to be cut through between the packs of 4 and with the thin tear-open edges 29 to be produced within each 4-pack.
  • the stops 28 for the second upper stamp plate 12 are changed in length by wedge slides 50, which are moved, for example, by means of air cylinders 51, for example extended by approximately 0.5 mm, compared to the stops 28 in the tool 2 for single packs.
  • the knives 14 are hollow ground from below, that is to say they have an approximately concave cutting edge, cf. 3.2
  • the thin film 54 is provided with incisions 52 on the side, cf. 12 and 3.2, by means of which the container film 31 can be easily separated along the thin film 54 by tearing the film open, for example by hand, in the continuation of the incisions.
  • the first punch holding plate 8 with the knives 10 is placed on the stops 26 and is held in this position, cf. Fig. 12.
  • the head plate 16 with the star stamps 18 continues to the lower position of the tool, whereby the rest of the fillets as with the individual containers is cut out, see FIG. 13.
  • the rounding cutouts fall out of the tool via the outlet openings 56 formed in the cutting plate 6 and base plate 4.
  • containers 2 made from polystyrene film can also be cut and scored with this tool 2.
  • the compression springs 24, 25, which must apply and maintain the cutting force of the corresponding knives 10, 14, can also be replaced by air cylinders or cylinders filled with nitrogen, depending on the cutting force required.
  • a third punch holding plate with corresponding knives, springs, spacing units and stops may also be required, which is based on the respective requirements.
  • the second knives 14 can also be provided with recesses in a rectangular or trapezoidal shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packages (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (11)

  1. Outil pour le découpage de récipients simples ou multiples d'une feuille de matière synthétique ayant une élongation à la rupture élevée, en particulier d'une feuille de polypropylène, avec plusieurs couteaux (10, 14, 18) pouvant être fermés de manière définie par l'intermédiaire d'une presse pour l'incision et la coupe de la feuille,
    et avec une matrice de découpage (6) avec des ajours de découpage (34 et 36) en creux et en relief qui coopèrent avec les couteaux (10, 14, 18), caractérisé par
    - au moins deux plaques de réception (8, 12, 16) pour les couteaux (10, 14, 18) disposées les unes derrière les autres en direction de fermeture, les couteaux (14) et (18) ou respectivement leurs fixations de couteaux traversant les plaques de réception (8, 12) disposées respectivement, en direction de fermeture, avant les plaques de réception (12, 16) qui leur sont adjointes et
    - avec des butées (26, 28) pour les plaques de réception (8, 12) réalisées réglables, venant en action simultanément ou à des instants différents, pour la fixation de la valeur des trajets d'avance des couteaux (10, 14).
  2. Outil selon la revendication 1,
    caractérisé en ce que les plaques de réception comprennent au moins deux plaques de support (8, 12) et une plaque porte-nez (16).
  3. Outil selon la revendication 2,
    caractérisé en ce que des ressorts de compression (24, 25) ou des vérins à gaz sont disposés entre les plaques de réception (8, 12, 16) pour le réglage des forces de découpage et pour le réglage de la précontrainte.
  4. Outil selon la revendication 1,
    caractérisé en ce que la matrice de découpage (6) et les butées (26, 28) sont disposées sur une platine (4).
  5. Outil selon la revendication 1 ou 4,
    caractérisé en ce que des vannes à sièges obliques (50, 50') sont prévues pour l'ajustage des longueurs des butées (26, 28).
  6. Outil selon l'une des revendications précédentes,
    caractérisé en ce que les couteaux comprennent des couteaux (10) à arêtes de coupe rectilignes (30) pour la coupe ou pour l'incision de la feuille, des couteaux (14) à arêtes de coupe (32) creusées vers l'intérieur pour une coupe facultative ou pour l'incision pour la réalisation d'un film mince d'amorce de rupture et une coupe latérale pour la réalisation d'encoches latérales et des poinçons en étoile (18) pour gruger les coins de récipients avec un arrondi (19).
  7. Outil selon la revendication 6,
    caractérisé en ce que les couteaux (10) à arêtes de coupe rectilignes (30) sont montés sur la plaque de support (8) la plus proche de la matrice de découpage (6), les couteaux (14) à arêtes de coupe creusées vers l'intérieur sont fixés à la plaque de support (12) immédiatement suivante et traversent la plaque de support (8) et les poinçons en étoile (18) sont montés sur la plaque porte-nez (16) et traversent les deux plaques de support (8) et (12).
  8. Outil selon la revendication 7,
    caractérisé en ce que les arêtes de coupe des couteaux (10) et (14) et des poinçons en étoile (18), dans la position déployée de l'outil (2) (position de départ), sont disposées dans un plan entre la plaque de support (8) adjacente à la matrice de découpage (6) et la matrice de découpage (6).
  9. Outil selon l'une des revendications précédentes,
    caractérisé en ce que la matrice de découpage (6) et la platine (4) sont munies d'ouvertures de décharge (56) pour les découpures d'arrondi matricées par les poinçons en étoile (18).
  10. Outil selon la revendication 1 et 6,
    caractérisé en ce que la butée (28) et/ou la butée (26) pour les couteaux (14) à arêtes de coupe (32) creusées vers l'intérieur et/ou pour les couteaux (10) à arêtes de coupe rectilignes sont (est) réglable(s) de telle manière que la feuille puisse être incisée jusqu'à une épaisseur résiduelle égale à l'épaisseur du film mince d'amorce de rupture de 0,03 mm à 0,05 mm.
  11. Outil selon l'une des revendications précédentes,
    caractérisé en ce que l'évidement (32) de l'arête de coupe des couteaux (14) est réalisé en forme de trapèze, de rectangle ou d'un évidement creux ou respectivement concave.
EP94102259A 1993-02-18 1994-02-15 Dispositif pour découper à la matrice ou plusieurs récipients dans une bande plastique Expired - Lifetime EP0615910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4304951A DE4304951C2 (de) 1993-02-18 1993-02-18 Werkzeug zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststoffolie
DE4304951 1993-02-18

Publications (2)

Publication Number Publication Date
EP0615910A1 EP0615910A1 (fr) 1994-09-21
EP0615910B1 true EP0615910B1 (fr) 1996-04-24

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EP94102259A Expired - Lifetime EP0615910B1 (fr) 1993-02-18 1994-02-15 Dispositif pour découper à la matrice ou plusieurs récipients dans une bande plastique

Country Status (3)

Country Link
EP (1) EP0615910B1 (fr)
DE (2) DE4304951C2 (fr)
ES (1) ES2089869T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10348050B3 (de) * 2003-10-16 2005-08-18 G. Wachsmuth & Co Werkzeugbau Gmbh Werkzeug zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststofffolien
WO2019224680A1 (fr) * 2018-05-20 2019-11-28 Abouzar Altafi Système séparateur pour détacher des récipients d'une bande de plastique

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US5740717A (en) * 1996-12-19 1998-04-21 Mcneil-Ppc, Inc. Blister package scoring machine
EP1235668B1 (fr) 1999-12-10 2004-03-03 Rohrer AG Dispositif d'entaillage servant a couper des materiaux d'emballage
DE10023591B4 (de) * 2000-05-13 2015-05-28 Robert Bosch Gmbh Verfahren und Vorrichtung zur Herstellung von gefüllten verschlossenen Behältern
ITMO20020299A1 (it) * 2002-10-17 2004-04-18 Sarmog Spa Apparato separatore.
DE502004006058D1 (de) * 2004-10-22 2008-03-13 Wachsmuth & Co Werkzeugbau Werkzeug zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststofffolien
DE102006013556B3 (de) * 2006-03-24 2007-07-19 Illig Maschinenbau Gmbh & Co. Kg Stanzwerkzeug zum Austrennen von tiefgezogenen Formteilen aus einer Folienbahn
CN102320064A (zh) * 2011-08-12 2012-01-18 苏州辉隆自动化设备有限公司 冲压切割模具
CN102363310A (zh) * 2011-10-11 2012-02-29 盐城市智成机械制造有限公司 裁切机的挡铁调节机构
DE102012204502B4 (de) 2012-03-21 2024-07-04 Ampack Gmbh Stanzeinrichtung zum Abtrennen von streifenförmigen Randbereichen von einer aus thermoverformbarem Material bestehenden Verpackungsbahn
CN102689322B (zh) * 2012-06-13 2015-07-15 浙江天鸿汽车用品有限公司 一种遮阳膜自动裁切装置
FR3022818B1 (fr) * 2014-06-30 2016-06-03 Sogameca Sas Perfectionnement aux outils pour la decoupe sur matrice rainuree d'objets multiples dans un materiau en feuille
CN104209981A (zh) * 2014-07-21 2014-12-17 宁国天运橡塑制品有限公司 一种橡胶脚垫冲切用刀模
CN107363899A (zh) * 2017-08-02 2017-11-21 常熟东南相互电子有限公司 具有平衡机制的模切刀具
ES2730121B2 (es) * 2018-05-07 2021-03-18 Ind Tecnologicas De Mecanizacion Y Automatizacion S A Matriz de corte de envases
ES2730120B2 (es) * 2018-05-07 2021-06-28 Ind Tecnologicas De Mecanizacion Y Automatizacion S A Dispositivo de corte de envases
CN108772908A (zh) * 2018-06-13 2018-11-09 柳州市钜诚科技有限公司 一种便于装卸和定位的裁切工装
DE102019203499A1 (de) * 2019-03-14 2020-09-17 Stanova Stanztechnik GmbH Stanzwerkzeug, Stanzvorrichtung und Verfahren zum flusenfreien Stanzen von Kunststoffrohlingen
DE102022104583A1 (de) * 2022-02-25 2023-08-31 Syntegon Technology Gmbh Niederhaltervorrichtung für eine Umformvorrichtung, Verfahren zu einer Umformung von Verpackungsmaterial mittels der Umformvorrichtung sowie Produktionsmaschine mit einer derartigen Umformvorrichtung
DE102022105660A1 (de) * 2022-03-10 2023-09-14 Rohrer Tools AG Stanzwerkzeug
FR3146611A1 (fr) * 2023-03-13 2024-09-20 Synerlink Outil de découpe à butées mobiles

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FR1432760A (fr) * 1965-02-11 1966-03-25 Constr Telephoniques Perfectionnements aux postes téléphoniques
CH497881A (de) * 1968-10-21 1970-10-31 Schweiger & Schweizer Ag Verfahren zur serienmässigen Herstellung mittelgrosser, glasloser Spiegel und Vorrichtung zur Durchführung des Verfahrens
DE2853267A1 (de) * 1978-12-09 1980-07-24 Applic Plastique Mec Elec Vorrichtung zum ausstanzen von behaeltern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10348050B3 (de) * 2003-10-16 2005-08-18 G. Wachsmuth & Co Werkzeugbau Gmbh Werkzeug zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststofffolien
WO2019224680A1 (fr) * 2018-05-20 2019-11-28 Abouzar Altafi Système séparateur pour détacher des récipients d'une bande de plastique

Also Published As

Publication number Publication date
DE4304951A1 (de) 1994-08-25
EP0615910A1 (fr) 1994-09-21
DE59400224D1 (de) 1996-05-30
DE4304951C2 (de) 1997-09-11
ES2089869T3 (es) 1996-10-01

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