EP0790109B1 - Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées - Google Patents

Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées Download PDF

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Publication number
EP0790109B1
EP0790109B1 EP19970102095 EP97102095A EP0790109B1 EP 0790109 B1 EP0790109 B1 EP 0790109B1 EP 19970102095 EP19970102095 EP 19970102095 EP 97102095 A EP97102095 A EP 97102095A EP 0790109 B1 EP0790109 B1 EP 0790109B1
Authority
EP
European Patent Office
Prior art keywords
creasing
punching
plate
elements
grooves
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
EP19970102095
Other languages
German (de)
English (en)
Other versions
EP0790109A1 (fr
Inventor
Rolf Sinn
Wolfgang Prof. Dr. Grebe
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.)
Karl Marbach GmbH and Co KG
Original Assignee
Karl Marbach GmbH and Co KG
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 DE19610574A external-priority patent/DE19610574C5/de
Application filed by Karl Marbach GmbH and Co KG filed Critical Karl Marbach GmbH and Co KG
Publication of EP0790109A1 publication Critical patent/EP0790109A1/fr
Application granted granted Critical
Publication of EP0790109B1 publication Critical patent/EP0790109B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • 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
    • 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
    • B26F2001/4445—Matrices, female dies, creasing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B31B50/252—Surface scoring using presses or dies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/06—Blanking

Definitions

  • the invention relates to a method and a punching and Creasing tool for the production of grooved stamped parts the preambles of claims 1 and 2 respectively.
  • Cardboard box blanks are usually given Creases through which the folding boxes when later erected maintain their defined shape.
  • the contours as well as necessary Incisions in the folding box blank are made by Punching generated.
  • the production takes place by means of steel stamping and Creasing tools on flat bed or rotary punches.
  • the band steel punching and creasing tools usually exist from a carrier plate made of wood, for example, connected Plastics with glass fabric or in sandwich construction Armored metal plates.
  • This carrier plates are made accordingly slots in the box contours, in which Punching or creasing lines are included.
  • the punch lines are either exactly as far or further from the carrier plate like the crease lines.
  • the punch lines work against one Punching plate, mainly made of steel. Create the crease lines a crease in the folding box material in that they Press material into a creasing groove. These creases can be in the punching plate is milled or as a structure on the punching plate to be appropriate.
  • the punching and creasing process is in the known punching and Creasing tools problematic because the material through the crease line only then is pulled into the corresponding groove, if the punching process has already started, i.e. the punch lines have already entered the box.
  • the crease bead is itself subject to tensile stress, caused by the neighboring cutting lines.
  • punching and creasing lines symmetrical in one Folding box cut are arranged on the Creasing tensile stresses usually asymmetrical, what depending on the asymmetry or skew of the creasing bead leads from the distance of the neighboring lines and the folding behavior severely impaired.
  • the limits of punching and scoring are therefore dependent on the punched material and the Folded box geometry. In particular the goodness the crease bead is in for the subsequent folding processes high speed folding carton gluing and packaging machines from vitally important.
  • DE 25 46 082 A1 discloses a punching and creasing tool for Production of grooved stamped parts from a sheet of material known, which has a support plate on the underside Punching elements and a scoring plate with scoring projections are provided are. There is a punched and scored plate under the carrier plate provided in the grooves below the creasing projections are trained.
  • the punch-crease plate is relative to the carrier plate is movable in one stroke, whereby the sheet of material is moved into the creasing grooves.
  • the creases are in a starting position in which the creasing elements and the punching elements are arranged at a distance from the punching-crease plate are further from the carrier plate to the punched-grooved plate than the stamping elements.
  • the grooved plate is in the stroke direction by means of an elastic device on the carrier plate stored.
  • the restoring force of the elastic material is like this chosen that an ejector function is guaranteed, i.e. that the punched sheet material is stripped from the punching knives when the carrier plate is in its initial position is moved back.
  • NL-A-9 002 692 is a process for the production of grooved stamped parts made of corrugated cardboard known in which a Punching and creasing tool is used on the creasing and punching equipment are provided for the formation of creases in the corrugated cardboard or for punching the corrugated cardboard in one Stroke movement are movable relative to a counter-punching plate.
  • the punching process is initiated when the Training of the creasing has taken place.
  • the Stamping process penetrate creasing lines from a certain point in time no further in the corrugated cardboard, but are heading in the direction pressed in the carrier plate. In this way, the depth remains of the grooves is limited when the carrier plate moves down until the punching lines touch the counter-punching plate come.
  • the invention has for its object a method and to create a punching and creasing tool with which grooved Have stamped parts made with a high quality groove.
  • the punching process initiated when the material is drawn into the creasing grooves is. This creates tension in the material during the formation of the Creasing lines avoided, so that the creasing lines are of high quality exhibit.
  • By compressing the material we get one precisely defined folding edge that creates a precise folding of the cardboard sheet.
  • the elastic restoring force Furnishing can depend on the material type and material thickness of the boxes to be grooved and the groove depth Compression of the material can be set in the groove area.
  • the creasing elements are elastic on the material to be creased on so that it is possible to have an even, constant Creasing depth regardless of the wear of the stamping elements to reach.
  • the geometric conditions e.g. the height difference between stamping elements and creasing elements depends on the material thickness of the punched material and the creasing parameters, i.e. the Groove depth in relation to the material thickness, which results derives a material compression that is necessary for training the creasing bead is of decisive influence.
  • the compressed Imprint of the creasing elements is the folded edge of the Box fixed.
  • the possibility of compression is here Can be used for the first time since the stamping and creasing elements are mutually exclusive work independently and the height wear of the stamping elements in the course of manufacturing not on the height ratio Stamping-creasing elements affects, as with the stamping-creasing tools was previously the case. It still has that Advantage that the groove depths in the punch-groove plate with can be created with less effort. They can continue Grooves are kept narrower. This is for the folded edges of the folding boxes very beneficial.
  • the creasing elements are preferably of creasing projections formed, which is provided on the underside of a grooved plate are mounted elastically on or in the carrier plate is.
  • the grooved plate is expediently by means of an elastomer plate mounted on the support plate, which between the Grooved plate and the support plate is arranged.
  • the grooved plate can be adjusted in the stroke direction for precise fixation are guided by centering bolts on the carrier plate are attached.
  • creasing grooves are in the punch-creasing plates NC controlled with the same program as that Slots for the punch-crease lines are made in the carrier plate. But by driving the lines into the slots tensions arise that lead to dimensional deviations of the crease lines in the carrier plate and the creasing grooves in the punch-creasing plate lead, so that the crease lines by hand, so very expensive, must be notified. This source of error is with the new procedures via the own grooved plate eliminated.
  • the creasing plate can also be used Take over the function of a hold-down plate and scraper plate.
  • the punching and creasing tool 1 shown in FIGS. 1 and 2 is between a pressure plate 3 and a counter pressure plate 4 arranged a punching machine.
  • the punching and creasing tool 1 has a horizontally arranged in the punching machine the pressure plate 3 connected carrier plate 6, for example consists of wood laminate, and one with the counter pressure plate 4 connected punch-crease plate 7 made of steel, which in Distance below the support plate 6 is arranged.
  • the grooved plate 9 is on the punched-grooved plate 7 facing underside with creasing protrusions (Creasing elements) 10a and 10b provided.
  • the free ends of the Creasing projections 10a, 10b extend in the in Fig. 1st shown starting position further from the carrier plate 6 to below as the free ends of the punch knives 2a, 2b, i.e. their Distance to the punching-grooving plate 7 is less than that of the punching knife 2a, 2b.
  • the grooved plate 9 can be made of metal, plastic or composite consist.
  • the creasing projections 10a, 10b can be milled out, Etch out by inserting strips or Plates are formed in the grooved plate 9.
  • the crease plate 9 creates the advantage that a precise placement of the individual creasing elements 10a, 10b not from the carrier plate 6, but determined by the manufacture of the grooved plate 9 becomes.
  • the creasing projections 10a, 10b opposite grooves 8a and 8b formed, in which the Creasing projections 10a and 10b folding box material during the punching-creasing process Push.
  • the grooved plate 9 is provided with center holes 13 in each of which a centering pin 14 is slidably guided, which passes through the elastomer plate 11 and into a Bore 12 of the support plate 6 is inserted.
  • the centering bolts 14 ensure exact centering of the creasing projections 10a, 10b of the grooved plate 9 with respect to the corresponding one Creasing grooves 8a and 8b, so that the best possible symmetrical Assignment of the creasing projections 10a, 10b and creasing grooves 8a, 8b is achieved.
  • center holes 15 are provided in the centering pins intervene in the fixation.
  • Fig. 1 of the punching and Creasing tool 1 In the starting position shown in Fig. 1 of the punching and Creasing tool 1 are the creasing projections 10a, 10b around Amount A (e.g. 0.3 mm) further from the carrier plate 6 than the punch knives 2a, 2b.
  • Amount A e.g. 0.3 mm
  • the distance between the creasing projections 10a, 10b from the punch-crease plate 7 is sufficient around a cardboard sheet 5 (Fig. 2) between the grooved plate 9 and the Insert the punch-crease plate 7.
  • FIG. 3 shows the distance between the creasing projections in a time-path diagram 10a, 10b and the punch knife 2a, 2b during the Stamping-creasing process with the stamping and creasing tool according to the invention 1 shown.
  • the creasing projections 10a, 10b are at the height RO.
  • the free ends of the punching knives 2a, 2b are at this time by the distance A (FIG. 1) above the height RO of the cardboard surface at the height S0.
  • the distance A between the free ends of the punching knives 2a, 2b and the free ends of the creasing projections 10a, 10b is constant, ie the punching knives 2a, 2b and the creasing projections 10a, 10b are moved synchronously.
  • the creasing projections 10a, 10b have drawn the cardboard into the creasing grooves 8a, 8b at the time t m .
  • the resistance of the cardboard during this pulling-in is smaller than the restoring force of the elastomer plate 11 up to the time t m .
  • the punching knives 2a, 2b and the creasing projections 10a, 10b move differently, since the resistance opposed to the creasing projections 10a, 10b due to the compression of the carton in Connection with the reaction force of the grooved grooves 8a, 8b is greater than the restoring force of the elastomer plate 11, so that the elastomer plate 11 is compressed.
  • the creasing projections 10a, 10b move from the time t m to the time t e , at which the punching knives 2a, 2b hit the punching-creasing plate 7 (FIG. 2) only by the amount B, while the punching knives 2a, 2b are linear move through the box by the amount C that corresponds to the thickness of the box.
  • elastomer plate 11 instead of the elastomer plate 11, other elastic ones can also be used Devices such as springs, rubber or pneumatic devices be used.
  • the punching-creasing plate 7 can be made in one piece with the counter-pressure plate 4 be formed.
  • the groove depth 17 depends on the punched material.
  • the conventional punching technique works with the punch-crease plate, in which the creasing grooves are introduced into the punching plate become. In many cases, however, grooved grooves are also produced separately assigned to the crease lines glued to the punching plate. Of course, this technology is also available with the new punch-creasing process possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Claims (6)

  1. Méthode de fabrication de pièces estampées rainurées, à partir d'une planche de carton, à l'aide d'un outil d'estampage et de rainurage sur lequel sont prévus des dispositifs de rainurage et d'estampage, qui pour former des rainures dans la planche de carton resp. pour estamper la planche de carton peuvent être levés et abaissés de manière relative à une plaque de contre-estampage, dans lequel cas la première étape consiste à former des rainures dans la planche de carton, avant de lancer le cycle d'estampage et lors de la formation des rainures, du matériau de la planche de carton est tiré dans des gorges de rainurage, caractérisé en ce que le cyçle d'estampage est lancé une fois que le matériau a été insérée dans les gorges de rainurage et en ce que le matériau est comprimé au cours du cycle d'estampage, après son insertion dans les gorges de rainurage.
  2. Outil d'estampage et de rainurage pour la fabrication de pièces estampées et rainurées à partir d'une planche de carton (5) avec
    une plaque support (6), sur la face inférieure de laquelle sont prévus des éléments d'estampage (2a, 2b) et des éléments de rainurage (10a, 10b),
    une plaque d'estampage et de rainurage (7), disposée sous la plaque support (6) dans laquelle des gorges de rainurage (8a, 8b) sont formées au-dessous des éléments de rainurage (10a, 10b)
    sur lequel la plaque d'estampage et de rainurage (7) peut être levée et abaissée de manière relative à la plaque support (6), déplaçant de ce fait la planche de carton (5) dans les gorges de rainurage (8a, 8b),
    dans leur position initiale, dans laquelle les éléments de rainurage (10a, 10 b) et les éléments d'estampage (2a, 2b) sont disposés à distance de la plaque d'estampage et de rainurage (7), les éléments de rainurage (10a, 10b) saillissent davantage de la plaque support (6) vers la plaque d'estampage et de rainurage que les éléments d'estampage (2a, 2b) et
    dans le sens de levée, les éléments de rainurage (10a, 10b) sont logés sur la plaque support (6) à l'aide d'un dispositif élastique (11),
       caractérisé en ce que la force de rappel du dispositif élastique (11) et la distance entre les extrémités libres des éléments d'estampage (2a, 2b) et des éléments de rainurage (10a, 10b) par rapport à la plaque support (6) sont calculées de manière à ce que les éléments d'estampage (2a, 2b) entrent en contact avec la planche de carton (5), lorsque les éléments de rainurage (10a et 10b) ont déjà inséré la planche de carton (5) dans les gorges de rainurage (8a, 8b) et en ce que le matériau est comprimé, lorsque les éléments d'estampage (2a, 2b) sont entrés en contact avec la planche de carton (5), dans les gorges de rainurage (8a, 8b).
  3. Outil d'estampage et de rainurage selon la revendication 2, caractérisé en ce que les éléments de rainurage (10a, 10b) sont formés par des saillies de rainurage, prévues sur la face inférieure d'une plaque de rainurage (9) qui est logée de manière élastique sur la plaque support (6).
  4. Outil d'estampage et de rainurage selon la revendication 3, caractérisé en ce que la plaque de rainurage (9) est logée sur la plaque support (6), par l'intermédiaire d'une plaque élastomère (11) qui est située entre la plaque de rainurage (9) et la plaque support (6).
  5. Outil d'estampage et de rainurage selon la revendication 3 ou 4, caractérisé en ce que une plaque de rainurage (9) est prévue pour chaque exemplaire de carton.
  6. Outil d'estampage et de rainurage selon l'une des revendications 2 à 5, caractérisé en ce que la plaque de rainurage (9) est guidée dans sa levée par des boulons de centrage (14) qui sont fixés sur la plaque support.
EP19970102095 1996-02-16 1997-02-10 Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées Expired - Lifetime EP0790109B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19605850 1996-02-16
DE19605850 1996-02-16
DE19610574 1996-03-18
DE19610574A DE19610574C5 (de) 1996-02-16 1996-03-18 Verfahren und Stanz- und Rillwerkzeug zur Herstellung von gerillten Stanzteilen

Publications (2)

Publication Number Publication Date
EP0790109A1 EP0790109A1 (fr) 1997-08-20
EP0790109B1 true EP0790109B1 (fr) 2002-06-05

Family

ID=26022973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970102095 Expired - Lifetime EP0790109B1 (fr) 1996-02-16 1997-02-10 Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées

Country Status (10)

Country Link
US (1) US6106453A (fr)
EP (1) EP0790109B1 (fr)
JP (1) JPH09323368A (fr)
AT (1) ATE218419T1 (fr)
CZ (1) CZ43297A3 (fr)
DK (1) DK0790109T3 (fr)
ES (1) ES2177839T3 (fr)
NO (1) NO311560B1 (fr)
PL (1) PL181715B1 (fr)
SK (1) SK14797A3 (fr)

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CN111136958B (zh) * 2018-04-18 2021-05-28 山东兴安彩印有限公司 一种纸板快速压痕装置以及纸板压痕方法
US11945670B2 (en) 2021-07-07 2024-04-02 Brown Llc Methods and systems for producing pressware
US11919270B2 (en) 2021-07-07 2024-03-05 Brown Llc Methods and systems for producing pressware
US20230010876A1 (en) * 2021-07-07 2023-01-12 Brown Llc Methods and systems for producing pressware
US11938699B2 (en) 2021-07-07 2024-03-26 Brown Llc Methods and systems for producing pressware
MX2021015330A (es) * 2021-12-10 2023-06-12 Schaeffler Transmision S De R L De C V Herramental para corte de papel de friccion para convertidor de torque.

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NO970377L (no) 1997-08-18
JPH09323368A (ja) 1997-12-16
EP0790109A1 (fr) 1997-08-20
ATE218419T1 (de) 2002-06-15
SK14797A3 (en) 1998-06-03
PL181715B1 (pl) 2001-09-28
ES2177839T3 (es) 2002-12-16
NO311560B1 (no) 2001-12-10
CZ43297A3 (en) 1997-09-17
US6106453A (en) 2000-08-22
PL318489A1 (en) 1997-08-18
DK0790109T3 (da) 2002-09-16
NO970377D0 (no) 1997-01-29

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