EP0697940B1 - Vorrichtung, klemmwerkzeug und verfahren zum ausbrechen von zuschnittabfällen beim stanzen von karton - Google Patents

Vorrichtung, klemmwerkzeug und verfahren zum ausbrechen von zuschnittabfällen beim stanzen von karton Download PDF

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Publication number
EP0697940B1
EP0697940B1 EP94918324A EP94918324A EP0697940B1 EP 0697940 B1 EP0697940 B1 EP 0697940B1 EP 94918324 A EP94918324 A EP 94918324A EP 94918324 A EP94918324 A EP 94918324A EP 0697940 B1 EP0697940 B1 EP 0697940B1
Authority
EP
European Patent Office
Prior art keywords
clamping
breaking away
cuttings
matrix
tools
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
EP94918324A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0697940A1 (de
Inventor
Dirk Dipl.-Ing Emrich
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0697940A1 publication Critical patent/EP0697940A1/de
Application granted granted Critical
Publication of EP0697940B1 publication Critical patent/EP0697940B1/de
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
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/1872—Means for removing cut-out material or waste using breakaway pins
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/10—Methods
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/329—Plural breakers
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool

Definitions

  • stripping tools stripping pins or equivalent pressure stamps or the like which can be placed on the waste parts from above can be used.
  • DE-U-90 03 329 describes a device of the type mentioned at the outset for breaking out cutting waste.
  • the clamping tools are abutments, which are arranged movably or resiliently within the respective opening. In their rest position, the abutments reach under each of the waste parts that are located in the cardboard sheet. When the waste parts are moved through the stripping tools, in particular stripping pins, the waste parts can be transferred at an angle to the cardboard sheet.
  • the abutments are formed in the various embodiments by one or more tongue-like springs, by sections of one or more rotatable bodies or by elastic lugs or bristles.
  • JP-A-4 201 100 describes an apparatus for breaking out cutting waste when punching cardboard in an automatic punching machine.
  • the device has a flat support plate which has a sponge-like flat elastic layer on its top. The device works in cycles.
  • the flat elastic layer is arranged on the support plate such that it can move in the vertical direction below a die plate.
  • the waste parts remaining after the punching process between the cardboard blanks are held on small cardboard bridges, so that the cutting waste does not fall off the punching plate and can hinder the subsequent punching process punched cardboard sheets that are still sufficiently connected due to the cardboard bridges then reach the stripping station via gripping devices the punching machine, in which the cutting waste is broken out of the cardboard sheet and falls into a waste container.
  • the punched cardboard sheet lies on a die plate such that its openings are congruent with the waste parts of the cardboard sheet.
  • the cutting waste is now gripped or clamped by a stripping tool or clamping tool brought up from above or below in the form of stripping pins and opposing, usually resiliently mounted clamping pins and, when the two tools move downwards together, pressed through the die opening and thus broken out of the cardboard sheet. While the tool with the clamping pins moves further down to ensure that the cut waste that has been broken out can be removed effortlessly, the stripping pins move up again immediately to enable the following cardboard sheet to be fed.
  • the upper and lower stripping or clamping tools are advantageously fastened in slide-in frames which are used in slides in the break-out station.
  • the stripping pins and the clamping pins are usually set by hand exactly in accordance with the shape and arrangement of the openings in the die plate or the cutting waste, with a larger portion per waste part Number of stripping pins must be exactly opposite to individual clamping pins. While the arrangement of the stripping pins according to the respective shape of the cutting waste is already programmable for the different types of cutting and can be done by inserting them into automatically generated holes in a mounting plate, the clamping pins are manually moved on rails that can be moved in a frame - between which the waste parts in the Litter bins can fall - precisely aligned with the stripping pins.
  • the die plate is contacted over the entire area from below and can consequently be made with a small thickness. Due to the resulting small depth of the die opening, an elastic clamping connection between the stripping pin, the waste part and the clamping surface of the clamping tool can be achieved even with a flat design of the clamping tool, whereby a flat contact between the waste part and the clamping tool is achieved for reliable grasping of the waste part the extremely small distance between the stripping pin and the flat element prevents the stripping pin from sliding off the waste part and a clamp connection is established.
  • the invention also relates to an embodiment in which the break-out or die plate is made as thin as, for example, a film and is supported by a flat element without an elastic surface.
  • the waste part is clamped after an extremely short path of the break-out pins after they have been placed on the waste part. Because this short path corresponds approximately to the thickness of the wafer-thin die plate.
  • the elastic operative connection between the clamping tool designed as a flat element and the knock-out pins is produced in a particularly simple manner according to a development of the invention in that the clamping tool is formed by a flat, elastic cover layer with a smooth surface arranged on a solid, flat base.
  • the elastic cover layer consists of a foam that compresses when the clamping tool designed as a flat surface is pressed onto the die plate and bulges into the die openings and thereby clamps the waste part between the stripping pin and the flat clamping tool and causes this during the downward movement of the Stripping and clamping tool also retained, thus ensuring the safe holding and breaking out of the waste part.
  • the separated waste parts are removed by wiping or blowing devices.
  • the clamping tool in the case of a multi-part design consists of rotatable clamping segments for the cyclical formation of openings in the clamping surface, in order to thereby cause the broken-off waste parts to be thrown off and carried away.
  • the clamping segments are preferably around their longitudinal axis in time with the upward and downward movement of the insertion frame for the clamping tool, preferably by 90 ° rotatable, in the initial length on the die plate a flat, contiguous clamping surface and, during the downward stroke, components with the cross section of an equilateral triangle, whereby the outer surfaces with the elastic cover layer are occupied.
  • a different clamping surface is available for the clamping process in each stripping cycle, while when the clamping surface changes due to the rotation of the clamping segment, the separated waste parts fall off the previous clamping surface and pass through a hole formed between the clamping segments.
  • the clamping tool according to the invention is formed from plate-like clamping segments rotatable about its longitudinal axis with an elastic cover layer provided on both sides, the plate-like clamping segments for forming openings between the clamping segments and for throwing off the waste parts after a breakout stroke during the downward or upward stroke, in each case by at least 90 ° are rotated.
  • the plate-shaped clamping segment is covered on one side with the elastic cover layer and is folded in the work cycle to form ejection openings during the downward stroke by a certain at least 90 ° bearing angle and folded back into the starting position on the subsequent upward stroke, in order to thereby separate the separated waste parts from the clamping surface remove.
  • drive motors are attached to the mounting frame of the device, which are operatively connected to the axes of the clamping segments for the rotary drive thereof and are controlled synchronously with the drive system of the automatic punching machine.
  • the drive motors are otherwise controlled so that the clamping segments are driven in the same direction of rotation during the downward stroke and the upward stroke, unless it is used to swing back and forth plate-shaped clamping segments. In the latter case, a plate-like clamping segment is just a folding movement executes and then folds back into the starting position, a single drive which effects the reciprocating movement of the clamping segment is provided.
  • the clamping tool without the elastic cover layer, is designed as an overall elastic or elastically supported, single or multi-part flat element, or the stripping pins are elastically supported and the single or multi-part flat element itself is not elastic, as already explained above .
  • the present invention provides a universal tool, that is to say for different types of cuts and arrangement of cuts, for cutting out scrap waste of various shapes, sizes and arrangements, which can also be used without problems in conventional stripping stations and allows simple retrofitting of existing systems (cf. claim 19 ).
  • the intermittent opening of the clamping surface in a multi-part clamping tool formed from clamping segments ensures, on the one hand, that the waste separated from the cardboard blanks is safely discarded without additional aids and can also be driven on the drive side by simple drives with a synchronization to the lifting movement, e.g. B. a conventional slide-in frame for the clamping pins.
  • Part of the invention is also a clamping tool according to claims 20 and 21 and furthermore a method according to claims 22-23.
  • the stripping station of an automatic punching machine for cardboard blanks essentially consists of the three holding frames 1, 2 and 3 for the stripping tools, which are arranged one above the other and can also be designed as insertion frames for retrofitting, the die plate 11 and the clamping tools.
  • the holding frame 1 there is a holding plate 4, into which holes 8 are made in accordance with the shape, size and arrangement of the waste parts 6 to be broken out of the cardboard blank 7, in which knockout pins 9, which form the knockout tool, are fastened.
  • Elastic, block-shaped hold-down devices 10 for the cardboard blanks 7 are also attached to the underside of the receiving plate 4.
  • Another receiving frame 2 with lateral holding rails 15 serves to receive the die plate 11, in which the waste parts 6 between the cardboard blanks 7 in the form and arrangement are provided identical die openings 12 which are slightly larger than the waste parts 6.
  • the cardboard sheet 5 punched in the punching device is held together by small cardboard bridges 13 left between the waste parts 6 and the cardboard blanks 7, so that the cardboard sheet 5 can be completely removed from the punching device by means of grippers and an accident due to loose waste parts 6 in the punching area is excluded.
  • the punched cardboard sheet 5 which is in the correct position on the die plate 11 before the waste parts 6 are broken out and is essentially identical to the latter in plan view, is indicated by the dashed line 14.
  • the clamping tool is finally received by a further receiving frame 3.
  • the clamping tool is designed as a multi-part, flat element 16, which consists of triangular cross-sectionally, on the end faces of the mounting frame 3 rotatably mounted clamping segments 16a.
  • the outer surfaces of the clamping segments 16a form firm, flat bases 17b and have an elastic cover layer 17, which represents the actual clamping element.
  • the rotationally movable clamping segments 16a are driven in synchronism with the usual cyclical upward and downward movement of the receiving frame 3 via a gear (not shown) arranged on the receiving frame 3 and provided with a drive motor. In this way, a clockwise and preferably modulatable rotary movement of the clamping segments 16a takes place by a certain angular amount.
  • the bores 8 in the mounting plate 4 and the die openings 12 in the die plate 11 are automatically generated according to a predetermined program and the stripping pins 9 are inserted into the bores 8 as well as the Hold-down device 10 attached to the mounting plate 4.
  • the mounting plate 4 After the mounting plate 4 has been inserted into the mounting frame 1 and the die plate 11 into the holding rails 15 of the mounting frame 2, the mounting frames 1, 2 thus prepared are pushed into the stripping station of the automatic punching machine.
  • a mounting frame 3 which is usually used in break-out stations for fastening the clamping pins serving as counterholders for the waste part, is preferably used as the receiving frame 3. This makes it possible to retrofit break-out stations of conventional punching presses with the new clamping tools in a simple manner or to use differently designed clamping tools or optionally to use the frames with the conventional clamping pins.
  • FIG. 2 the position before stripping
  • FIG. 3 the position at the beginning of the stripping process
  • FIG 4 shows the position after breaking out
  • FIG. 5 shows the position when the clamping segment tilts to remove the waste part and cardboard sheet newly placed on the die plate 11.
  • the punched cardboard sheet 5 deposited on the die plate 11 by means of a gripper (not shown) is held on the die plate 11 by the hold-down device 10 after the holding frame 1 has moved downward.
  • the entire surface of the flat element 16 with the clamping segments 16a presses against the die plate 11 from below.
  • the die plate 11 is supported from below and, since it now only has to absorb small forces during the breaking-out process, can be of comparatively small thickness will.
  • the low thickness of the die plate and the elastic design of the surface of the clamping segments 16a cause the elastic cover layer 17 made of foam to bulge into the die opening 12 and, as can be seen from FIG.
  • the waste part 6 is supported flatly and taken along until the cardboard bridge 13 is torn off between the cardboard blank 7 and the waste part 6 and the subsequent ejection from the die opening 12, so that sliding of the stripping pin 9 on the waste part 6 is avoided and safe stripping is ensured.
  • the elastic bulging of the elastic cover layer 17 made of foam is not required if the die plate 11 is extremely thin and the flat element 16 is not elastic (not shown), so that the underside of the waste part 6 already touches the flat element 16 when the cardboard sheet 5 is placed on it or almost touched, but at the latest after placing the stripping pin 9 on the top of the waste part 6.
  • the downward stroke of the receiving frame 3 is continued in order to perform a further function of the clamping tools designed as a flat element 16, namely the ejection process for the separated waste part 6, to effect.
  • the gear not shown, gives the clamping segments 16a a rotary movement of at least 60 °, but preferably of 90 °.
  • the clamping surfaces of the clamping segments 16a go into an inclined position (FIG.
  • the triangular clamping segments 16a assume the position shown in broken lines in FIG. 1 with a vertical (60 ° rotation) or oblique (90 ° rotation, not shown), upward-pointing tip.
  • the rotational movement of the clamping segments 16a is continued by a further angle of 60 ° with a 60 ° rotation for a downward stroke and of 30 ° for a 90 ° rotation with a downward stroke.
  • the waste part can still fall off the clamping surface of the clamping segment 16a during the upward stroke if, in exceptional cases, it has not already fallen off during the downward stroke.
  • a trailing brake is expediently integrated into the drive system.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Details Of Cutting Devices (AREA)
  • Making Paper Articles (AREA)
EP94918324A 1993-05-15 1994-05-14 Vorrichtung, klemmwerkzeug und verfahren zum ausbrechen von zuschnittabfällen beim stanzen von karton Expired - Lifetime EP0697940B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4316318 1993-05-15
DE4316318 1993-05-15
PCT/EP1994/001569 WO1994026480A1 (de) 1993-05-15 1994-05-14 Vorrichtung, klemmwerkzeug und verfahren zum ausbrechen von zuschnittabfällen beim stanzen von karton

Publications (2)

Publication Number Publication Date
EP0697940A1 EP0697940A1 (de) 1996-02-28
EP0697940B1 true EP0697940B1 (de) 1997-04-02

Family

ID=6488191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94918324A Expired - Lifetime EP0697940B1 (de) 1993-05-15 1994-05-14 Vorrichtung, klemmwerkzeug und verfahren zum ausbrechen von zuschnittabfällen beim stanzen von karton

Country Status (9)

Country Link
US (1) US5735442A (es)
EP (1) EP0697940B1 (es)
JP (1) JPH08510172A (es)
AT (1) ATE151005T1 (es)
AU (1) AU673611B2 (es)
CA (1) CA2162917A1 (es)
DE (1) DE59402312D1 (es)
ES (1) ES2103594T3 (es)
WO (1) WO1994026480A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115379A1 (de) 2021-06-14 2022-12-15 puzzleYOU GmbH Verfahren zur herstellung eines puzzles und vereinzelungseinrichtung hierfür

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH691035A5 (fr) * 1995-04-18 2001-04-12 Bobst Sa Outil pour machine de découpe d'éléments en plaque, et équipement associé.
DE29825182U1 (de) * 1998-04-02 2005-12-22 Vossen, Franz Vorrichtung zum Entfernen von Ausbrechteilen aus einem Werkstoffbogen o.dgl.
CH693502A5 (fr) * 1999-08-02 2003-09-15 Bobst Sa Outil universel d'éjection.
CA2287035C (en) 1999-10-20 2008-03-18 Peter E. Sandford Novel elements to erect female and male blanking dies for a die cutting and/or blanking machine
CH693787A5 (fr) * 1999-10-26 2004-02-13 Bobst Sa Procédé pour préparer un système d'outils de façonnage, table de réglage pour mettre en oeuvre ce procédé et ensemble d'éléments pour préparer une forme supérieure d'éjection.
US6692425B2 (en) 2001-04-30 2004-02-17 Sdc Innovations, Inc. Folding presser assembly
US6659927B2 (en) 2001-04-30 2003-12-09 Sdc Innovations, Inc. Folding presser assembly
US6792840B2 (en) 2002-02-08 2004-09-21 Atlas Die Llc Folding plunger assembly for blanking system
DE202012104394U1 (de) * 2012-11-14 2014-02-17 Franz Vossen Vorrichtung zum Stanzen von blattartigen Kartonwerkstoffen

Family Cites Families (16)

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US2779257A (en) * 1955-06-10 1957-01-29 Roland T Jedlick Machine for removing waste slugs from carton blanks
DE1411236C3 (de) * 1961-11-07 1975-10-30 J. Bobst & Fils S.A., Prilly, Waadt (Schweiz) Ausbrechvorrichtung
NL284964A (es) * 1961-11-10 1900-01-01
US3303979A (en) * 1965-09-07 1967-02-14 Lang Pierre Method and device for removing pieces from sheet material
US3552615A (en) * 1968-07-09 1971-01-05 Robert H Murray Scoring device for punching and removing chips from computer punch cards
US3670791A (en) * 1970-07-13 1972-06-20 Donald L Johnson Method of jet breaking veneer to narrow wood flakes
JPS5414086A (en) * 1977-07-05 1979-02-01 Iijima Seisakusho Kk Plain plate punching machine
AT351252B (de) * 1977-06-15 1979-07-10 Khu Peter Verfahren und vorichtung zum trennen von in mindestens einer folienlage durch einen praege- schweissvorgang gebildeten formstuecken entlang ihrer schweisskontur
DE2913439A1 (de) * 1979-04-04 1980-10-16 Schoen & Cie Gmbh Stanzmaschine
JPS60228099A (ja) * 1984-04-20 1985-11-13 株式会社日立製作所 打抜き加工方法
US4964555A (en) * 1988-04-29 1990-10-23 William Hnatuk Tablet breaking apparatus
JPH0790514B2 (ja) * 1989-02-20 1995-10-04 日本ダイスチール株式会社 紙器打抜き装置に用いる木型
EP0446702B1 (de) * 1990-03-12 1994-12-28 Franz Vossen Vorrichtung zum Entfernen von ausbrechteilen aus einem Werkstoffbogen od.dgl.
DE9003329U1 (de) * 1990-03-12 1990-07-19 Meurer Nonfood Product GmbH, 7760 Radolfzell Vorrichtung zum Entfernen von Ausbrechteilen aus einem Werkstoffbogen od.dgl.
CH682651A5 (fr) * 1990-04-12 1993-10-29 Bobst Sa Outil supérieur mobile de séparation de poses dans une machine de production d'emballages.
JP3090214B2 (ja) * 1990-11-29 2000-09-18 秀行 上田 自動紙打抜機の屑取り装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115379A1 (de) 2021-06-14 2022-12-15 puzzleYOU GmbH Verfahren zur herstellung eines puzzles und vereinzelungseinrichtung hierfür
WO2022263387A1 (de) 2021-06-14 2022-12-22 puzzleYOU GmbH Verfahren zur herstellung eines puzzles und vereinzelungseinrichtung hierfür

Also Published As

Publication number Publication date
AU6970094A (en) 1994-12-12
DE59402312D1 (de) 1997-05-07
AU673611B2 (en) 1996-11-14
JPH08510172A (ja) 1996-10-29
US5735442A (en) 1998-04-07
ES2103594T3 (es) 1997-09-16
EP0697940A1 (de) 1996-02-28
WO1994026480A1 (de) 1994-11-24
CA2162917A1 (en) 1994-11-24
ATE151005T1 (de) 1997-04-15

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