EP0263258B1 - Outil de poinçonnage en feuillard d'acier avec bande profilée élastique - Google Patents

Outil de poinçonnage en feuillard d'acier avec bande profilée élastique Download PDF

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Publication number
EP0263258B1
EP0263258B1 EP87111424A EP87111424A EP0263258B1 EP 0263258 B1 EP0263258 B1 EP 0263258B1 EP 87111424 A EP87111424 A EP 87111424A EP 87111424 A EP87111424 A EP 87111424A EP 0263258 B1 EP0263258 B1 EP 0263258B1
Authority
EP
European Patent Office
Prior art keywords
strip steel
steel punching
strip
profile
tool according
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
EP87111424A
Other languages
German (de)
English (en)
Other versions
EP0263258A2 (fr
EP0263258A3 (en
Inventor
Karl Marbach
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
Application filed by Karl Marbach GmbH and Co KG filed Critical Karl Marbach GmbH and Co KG
Priority to AT87111424T priority Critical patent/ATE60537T1/de
Publication of EP0263258A2 publication Critical patent/EP0263258A2/fr
Publication of EP0263258A3 publication Critical patent/EP0263258A3/de
Application granted granted Critical
Publication of EP0263258B1 publication Critical patent/EP0263258B1/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
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/14—Means for treating work or cutting member to facilitate cutting by tensioning the work
    • 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
    • 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
    • B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies

Definitions

  • the invention relates to a steel band punching tool with a carrier plate in which band steel punching knives protruding in slots above the surface of the carrier plate are attached to the carrier plate in parallel with these profile strips of elastic material, which protrude beyond the cutting edge of the band steel punching knives with a punching material contact surface.
  • FR-A-1 364 357 also shows the arrangement of two profile strips (8) which are also made of rubber and which are on the side of a band embossing tool (4) made of hard plastic and having a rounded tip Support plate (2) are glued on.
  • a profile tape (9) is glued, which forms with its triangular cross section the counter profile to the profile strips (8) and has a longitudinal groove (10) in which the compression of the profile strips (8) during the punching process Embossing tool tip (4) can be added.
  • Both profile strips (8) and the profile strip (9) are designed in their geometrical configuration so that they should prevent cracks or fissures on the surface of the cardboard to be embossed in the area of the embossing during the embossing process. Accordingly, the special, i.e. profile strips (8) and profile strips (9) adapted to the respective embossing shape are used. Due to the special geometric configuration of the profile strips for only one purpose, this increases the manufacturing costs of such parts and limits their universal applicability regardless of the embossing or cutting die provided on the counterplate. In the aforementioned French patent specification, it is expressly pointed out that, due to the selected cross-sectional shape of the profiled strip (9), the formation of cracks at the embossing points is to be prevented. (P.3, 2nd column, Z.35-41). This training can not prevent the breakpoints between the individual punch cuts. They must therefore be designed to be relatively wide in order to enable safe handling of the punched sheet without disintegration.
  • the cardboard material to be cut is first pressed against the counterpressure roller by the leading profile strip (17) and thus held; when rolling further, the tip of the cutting knife (parts (4) comes to rest on the punching material before engagement of the trailing profile strip (17).
  • the build-up of tension within the punching material to be cut is also caused here, so that the interface is torn prematurely and thus frayed is caused.
  • the known profile strips have a square cross section for easy manufacture and attachment.
  • punching in particular when embossing or creasing matrices are also arranged on the counterplate, the individual panels deform and before the punching is done, the paper or cardboard is torn.
  • the cardboard has a cover layer on it, it tends to tear and there are very unsightly frayed punched edges, especially with colored surfaces.
  • the breakpoints must have relatively large cross-sectional dimensions so that they do not tear through.
  • the object of the present invention is to improve a steel strip punching tool of the type mentioned at the outset so that punching with clean edges without fraying is achieved, even if stamping dies are used. Furthermore, breakpoints should be made possible with a material cross-section that is as small as possible, so that the benefits can be easily removed later.
  • the invention provides that the profile strip is designed so that a vertical Load moves its punching material contact surface against the band steel punch knife and that at least the side surface of the profile strip facing the band steel punch knife is inclined towards the cutting edge of the band steel punch knife and / or that a cross-sectional area of the elastic profile strip facing the band steel punch knife has a greater hardness than the remaining cross section.
  • the punching material contact surface is laterally displaced.
  • an angle of inclination from the vertical of approximately 10 ° can be provided.
  • Cross-sectional area is a region approximately parallel to the side surface of the profile strip, this cross-sectional area running at an angle to the base surface when an inclination angle is arranged and tilts when the punching process is subjected to a vertical load while increasing the angle of inclination.
  • the profile strip is designed as a hollow profile.
  • the inner walls of the hollow profile which run approximately perpendicular to the carrier plate, can be inclined towards the cutting edge of the band steel punching knife, so that the profile strip can have approximately a parallelogram cross-section and, when loaded, a parallel displacement of the punching material contact surface occurs towards the cutting edge, as in the folding movement of a parallelogram-like one Quadrilateral joints.
  • edge of the profile strip facing away from the band steel punching knife can be greatly rounded, so that a constant transition of the surface pressure is achieved and thus the pressing points in the edge area are largely avoided, but at least become much less visible.
  • the profile strip can be composed of at least two strips, the strip closer to the band steel punching knife having the greater hardness having.
  • the strip closer to the band steel punching knife having the greater hardness having.
  • the strip closer to the band steel punching knife having the greater hardness having.
  • the strip closer to the band steel punching knife having the greater hardness having.
  • the strip closer to the band steel punching knife having the greater hardness having.
  • E.g. can be composed of foam rubber strips of different hardness.
  • the transitions in the interior of the hollow profile can be rounded.
  • the strip steel punching tool partially shown in cross section in FIG. 1 has a carrier plate 1 made of plywood, with slots 2 in which strip steel punching knives 3 are inserted.
  • the back 4 of the band steel punching knife 3 is supported on a hardened steel plate 5, so that when the opposite cutting edge 6 is loaded, it cannot evade.
  • the profile strips 7, 7 ⁇ are preferably glued as close as possible to the band steel punching knives 3 on the surface 8 of the carrier plate 1.
  • the paper or cardboard sheet to be processed is placed on the stamping material contact surface 9, then a counterplate, not shown, is pressed in a known manner against the cutting edge 6, the profile strips 7, 7 'being compressed until the cardboard or paper is punched through. Then the counter plate is lifted off again. Due to the elasticity of the profile strips 7, 7 ', the punched-out, still interconnected benefits are raised above the cutting edge 6. The entire sheet of paper or cardboard can then be transported to a next processing station without fear of jamming with the band steel punching knives 3.
  • FIGS. 2 to 4 Various exemplary embodiments are shown in FIGS. 2 to 4.
  • the embodiment of Figure 2 is a full profile made of foam rubber or cork rubber.
  • the not shown Band steel punch knife 3 facing side surface 10 extends at an angle of inclination 11, which can be varied depending on the application. An angle of approximately 10 ° -15 ° has proven to be particularly advantageous for processing the usual cartons for folding boxes.
  • a curve 12 or a corresponding beveling of the upper edge away from the band steel punching knife 3 the formation of visible imprints on the cardboard is reduced, in particular on sensitive surfaces.
  • the exemplary embodiment in FIG. 3 is a hollow profile with an approximately trapezoidal cross section.
  • the corners 13 of the interior 14 are rounded to increase the fatigue strength.
  • the corners 13 ⁇ and 13 "can be rounded with a larger radius, as can be seen from FIG. 3.
  • the profile strip 7 can be formed from cross-sectional areas 15, 15 ⁇ with rubber, sponge rubber or the like with different hardness, the cross-sectional area 15 running parallel to the side surface 10 and forming it being made harder (over 40 Shore).
  • the course of the separation of the areas 15, 15 ⁇ is shown in dashed lines in the embodiment of Figures 3 and 4.
  • the profile 3 can for example be done by gluing two profiled strips 15, 15,.
  • the side surface 17 opposite the side surface 10 can be designed to run in parallel (indicated by dashed lines).
  • a V-recess 18 is provided to form the side surface 10 which extends at an inclination angle 11 of approximately 10 ° -15 °, which has a basic angle of 90 °, the transition with a Rounding 20 can be provided to increase the fatigue strength.

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)
  • Springs (AREA)
  • Catalysts (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Heat Treatment Of Articles (AREA)
  • Turning (AREA)
  • Scissors And Nippers (AREA)
  • Finger-Pressure Massage (AREA)

Claims (18)

1. Outil de découpage à feuillard d'acier avec une plaque d'appui (1) dans laquelle des lames de découpa­ge en feuillard d'acier (3) sont tenues dans des fentes (2) en étant en saillie par rapport à la face supérieure (8) de la plaque d'appui (1) et, parallèlement à ces lames sont fixées à proximité de celles-ci, à la plaque d'appui (1), des bandes profilées (7, 7ʹ) en matière élastique, de préféren­ce en caoutchouc, en mousse de caoutchouc, en caoutchouc-­liège ou en matière analogue, qui dépassent l'arête de coupe (6) des lames de découpage en feuillard d'acier (3) par leur surface de contact (9) avec la matière à découper, caractérisé en ce que la bande profilée (7, 7ʹ) a une configuration telle que, sous une charge s'exerçant verti­calement, sa surface de contact (9) avec la matière à découper se déplace en direction de la lame de découpage en feuillard d'acier (3), et, à cette fin, au moins la surfa­ce latérale (10) de la bande profilée (7, 7ʹ) tournée vers la lame de découpage en feuillard d'acier (3) est inclinée vers cette lame de découpage en feuillard d'acier (3) et/ou une partie (15) de la section droite (15) de la bande profilée (7, 7ʹ) élastique, tournée vers la lame de découpage en feuillard d'acier (3), présente une dureté supérieure à celle du reste (15ʹ) de la section droite.
2. Outil à feuillard d'acier selon la revendica­tion 1 caractérisé en ce qu'il est prévu un angle d'in­clinaison (11) de 10° à 15° environ par rapport à la ver­ticale.
3. Outil de découpage à feuillard d'acier selon la revendication 1 caractérisé en ce que la partie (15) de la section droite est une partie sensiblement parallèle à la surface latérale (10) de la bande profilée (7, 7ʹ).
4. Outil de découpage à feuillard d'acier selon une quelconque des revendications 1 à 3 caractérisé en ce que la bande profilée (7, 7ʹ) a la configuration d'un profil creux (figure 3)
5. Outil de découpage à feuillard d'acier selon la revendication 4 caractérisé en ce que les parois inté­rieures du profilé creux s'étendant sensiblement vertica­lement sont inclinées en direction du tranchant de la lame de découpage en feuillard d'acier (3).
6. Outil de découpage à feuillard d'acier selon une quelconque des revendications 1 à 5 caractérisé en ce que la bande profilée (7, 7ʹ) a une section ayant sensible­ment la forme d'un parallélogramme.
7. Outil de découpage à feuillard d'acier selon la revendication 5 ou 6 caractérisé en ce que l'espace intérieur (14) du profil creux a lui aussi sensiblement une section droite en forme de parallélogramme.
8. Outil de découpage à feuillard d'acier selon la revendication 6 caractérisé en ce que le bord de la bande profilée (7, 7ʹ) situé à l'opposé de la lame de découpage en feuillard d'acier (3) est fortement arrondi (arrondi 12) ou chanfreiné.
9. Outil de découpage à feuillard d'acier selon une quelconque des revendications 1 à 8 caractérisé en ce que la bande profilée (7, 7ʹ) est composée d'au moins deux bandes élémentaires (parties de section droite 15, 15ʹ) et la bande (15) la plus proche de la lame de découpage en feuillard d'acier (3) a la plus grande dureté.
10. Outil de découpage à feuillard d'acier selon la revendication 9 caractérisé en ce que la bande profilée (7, 7ʹ) est composée de bandes en matière de différentes duretés telles que des bandes de caoutchouc mousse.
11. Outil de découpage à feuillard d'acier selon la revendication 4 caractérisé en ce que l'espace intérieur (14) du profil creux présente des transitions arrondies (angles 13, 13ʹ, 13").
12. Outil de découpage à feuillard d'acier selon une quelconque des revendications 1 à 11, caractérisé en ce que la bande profilée (7, 7ʹ) est en caoutchouc-liège.
13. Outil de découpage à feuillard d'acier selon la revendication 1 ou 3 caractérisé en ce que le reste de la section droite de la bande profilée élastique (7, 7ʹ) présente un degré de dureté Shore inférieur à 40.
14. Outil de découpage à feuillard d'acier selon la revendication 1 ou 2 caractérisé en ce que la face laté­rale (10) de la bande profilée (7, 7ʹ) présente une échan­crure en V (18) en s'éloignant de la lame de découpage à feuillard d'acier (3) pour la formation de l'angle d'incli­naison (11).
15. Outil de découpage à feuillard d'acier selon la revendication 14 caractérisé en ce que la surface res­tante (19) libre de l'échancrure en V (18) sert de surface d'appui contre la lame de découpage en feuillard d'acier (3)
16. Outil de découpage à feuillard d'acier selon la revendication 14 ou 15 caractérisé en ce que l'échancru­re en V (18) présente un angle au sommet de 90°, éventuel­lement avec arrondi.
17. Outil de découpage à feuillard d'acier selon une quelconque des revendications 14 à 16, caractérisé en ce que la surface latérale (17) située à l'opposé de la lame de découpage en feuillard d'acier (3) s'étend parallè­lement à la surface latérale (10) de l'échancrure en V (18).
18. Outil de découpage selon la revendication 3 caractérisé en ce que, pour diminuer la dureté du reste de la section droite (15ʹ), des évidements (21) sont prévus dans la zone d'appui de la bande profilée (7) (figure 5).
EP87111424A 1986-09-05 1987-08-07 Outil de poinçonnage en feuillard d'acier avec bande profilée élastique Expired - Lifetime EP0263258B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111424T ATE60537T1 (de) 1986-09-05 1987-08-07 Bandstahlstanzwerkzeug mit elastischem profilstreifen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3630287 1986-09-05
DE3630287A DE3630287C1 (de) 1986-09-05 1986-09-05 Bandstahlstanzwerkzeug mit elastischem Profilstreifen

Publications (3)

Publication Number Publication Date
EP0263258A2 EP0263258A2 (fr) 1988-04-13
EP0263258A3 EP0263258A3 (en) 1988-09-14
EP0263258B1 true EP0263258B1 (fr) 1991-01-30

Family

ID=6309001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111424A Expired - Lifetime EP0263258B1 (fr) 1986-09-05 1987-08-07 Outil de poinçonnage en feuillard d'acier avec bande profilée élastique

Country Status (6)

Country Link
EP (1) EP0263258B1 (fr)
AT (1) ATE60537T1 (fr)
DE (1) DE3630287C1 (fr)
DK (1) DK166662B1 (fr)
FI (1) FI85236C (fr)
NO (1) NO167639C (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9000560U1 (de) * 1990-01-19 1990-03-01 Karl Linhardt GmbH, 8501 Dietenhofen Lochstanze für Bahnmaterial
DE4304030A1 (de) * 1993-02-11 1994-08-18 Marbach Gmbh Karl Bandstahlstanzwerkzeug mit Niederhalter
DE9303159U1 (de) * 1993-02-11 1993-08-05 Karl Marbach GmbH + Co, 74080 Heilbronn Bandstahlstanzwerkzeug mit Niederhalter
DE29604627U1 (de) * 1996-03-13 1996-05-09 Prügel, Johann, 86757 Wallerstein Stanzwerkzeug
US8042442B2 (en) 2002-08-01 2011-10-25 Bayerische Motoren Werke Aktiengesellschaft Cutting tool
DE10235185A1 (de) * 2002-08-01 2004-02-19 Bayerische Motoren Werke Ag Schnittwerkzeug
DE102005062404A1 (de) * 2005-12-23 2007-06-28 Cfs Germany Gmbh Schneidlinie für Stanzen
ITFI20060342A1 (it) * 2006-12-29 2008-06-30 Foldyn S R L Apparato e dispositivo per la gommatura di fustelle.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364357A (fr) * 1963-07-23 1964-06-19 Dispositif pour la préparation de formes à estamper et à rainurer, pour machines ou appareils effectuant simultanément l'estampage et le rainurage de cartons, ou analogues
US3288007A (en) * 1964-10-05 1966-11-29 Eda Masumi Paper holding apparatus for cutting cylinder in a rolling press
US3277756A (en) * 1965-04-22 1966-10-11 Donnelley & Sons Co Rotary web cutter and stripper assembly
US3803963A (en) * 1971-10-20 1974-04-16 Int Paper Co Cutter with stripper
DE2610628C3 (de) * 1976-03-13 1979-09-27 Dornier Gmbh, 7990 Friedrichshafen Vorrichtung zum Ausschneiden von plattenförmigen Kernwerkstoffen für Sandwichbauteile
DE3135021A1 (de) * 1981-09-04 1983-03-31 Georg 5372 Schleiden Uhlmann "vorrichtung zum stanzen von zuschnitten aus karton, pappe und dergleichen"
DE3135980C1 (de) * 1981-09-11 1983-06-01 Karl Marbach Gmbh & Co, 7100 Heilbronn Bandstahlstanzwerkzeug mit mindestens einem eine Schneide aufweisenden bandförmigen Stanzmesser
FI833476L (fi) * 1982-10-01 1984-04-02 Stewart & Sons Wm R Skaeranordning

Also Published As

Publication number Publication date
EP0263258A2 (fr) 1988-04-13
NO167639C (no) 1991-11-27
EP0263258A3 (en) 1988-09-14
DK431487D0 (da) 1987-08-19
FI85236B (fi) 1991-12-13
ATE60537T1 (de) 1991-02-15
NO167639B (no) 1991-08-19
NO873707L (no) 1988-03-07
FI85236C (fi) 1992-03-25
DE3630287C1 (de) 1993-06-24
FI873490L (fi) 1988-03-06
DK166662B1 (da) 1993-06-28
FI873490A0 (fi) 1987-08-11
DK431487A (da) 1988-03-06
NO873707D0 (no) 1987-09-04

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