EP0258675A2 - Outil de poinçonnage en feuillard d'acier - Google Patents

Outil de poinçonnage en feuillard d'acier Download PDF

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Publication number
EP0258675A2
EP0258675A2 EP87111423A EP87111423A EP0258675A2 EP 0258675 A2 EP0258675 A2 EP 0258675A2 EP 87111423 A EP87111423 A EP 87111423A EP 87111423 A EP87111423 A EP 87111423A EP 0258675 A2 EP0258675 A2 EP 0258675A2
Authority
EP
European Patent Office
Prior art keywords
bars
punching tool
tool according
metal frame
longitudinal
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.)
Ceased
Application number
EP87111423A
Other languages
German (de)
English (en)
Other versions
EP0258675A3 (fr
Inventor
Rolf Sinn
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
Publication of EP0258675A2 publication Critical patent/EP0258675A2/fr
Publication of EP0258675A3 publication Critical patent/EP0258675A3/fr
Ceased 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
    • 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 strip punching tool with a carrier plate enclosed by a metal frame, in which the steel strip punching knives are inserted into receiving slots produced by laser beams and which are reinforced by stiffening bars in the form of longitudinal and transverse bars made of metal, inserted in the transverse and longitudinal directions into the carrier plate, the ends the stiffening rods are firmly anchored in the metal frame.
  • the stiffening bars are arranged on the top in the longitudinal direction and opposite on the back in the transverse direction.
  • the elongation behavior of this steel band punching tool is different in the longitudinal and transverse directions.
  • the stiffening bars By inserting the stiffening bars into surface slots, the surface of the carrier plate is weakened.
  • the band steel punching knives have to be provided in the area of the stiffening bars with recesses that come close to the cutting edges, which affects the cutting and creasing quality. This is particularly because the recesses are the width of the Stiffening bars must be correspondingly relatively wide, so that the uniform transmission of cutting force in the band steel punching knife itself suffers and undesirable knife deformations occur.
  • the present invention is based on the object of improving a band steel punching tool of the type mentioned at the outset in such a way that approximately the same elongation behavior is achieved in the longitudinal and transverse directions and that the band steel punching knives have to be weakened as little as possible, at least in the area of the cutting edges.
  • the invention provides that the stiffening bars are arranged symmetrically to the plate thickness in the support plate in through holes, that recesses and / or openings are provided in the support plate at the crossing points of the longitudinal and transverse bars and there the longitudinal and transverse bars below Preload are welded, screwed or soldered together.
  • the steel strip punching tool behaves essentially symmetrically when loaded with a positive or a negative bending moment. Possibly. necessary recesses in the band steel punching knives can be arranged at a sufficient distance from the cutting edge, so that the occurring ones Forces can only cause an insignificant deformation of the tool working edge of the band steel punching knife.
  • the cross bars can be composed of short bar parts and firmly welded, screwed or soldered to the longitudinal bars under pretension, the ends being able to be adapted to the curve to facilitate the connection.
  • the ends of the stiffening rods penetrate the metal frame in bores and are firmly welded or soldered to it, so that the metal frame receives a substantial stiffening and also withstands large stamping pressures without significant deformation.
  • the diameter of the stiffening bars can be between approximately 33 and 50%, preferably approximately 40%, of the thickness of the carrier plate.
  • this can be fixed in the metal frame by means of additional screws, the screws being recessed in the metal frame.
  • a comfortable handling of the steel band punching tool without the risk of injuries and snagging of fibers during cleaning can be achieved in that the penetrated by the stiffening bars and possibly the screws
  • the outer circumference of the metal frame is preferably machined by grinding. Of course, the excess during welding or soldering is also removed.
  • the metal frame is particularly advantageously composed of flat metal rods that are welded or soldered together at the corners.
  • the corners of the carrier plate can be severely broken. Possibly. the welding can also take place in the area of the cleared corners only after complete assembly. So it can be fixed by the screws, the flat metal rods, then introduced the through holes for the stiffening rods. these are then inserted and then both the stiffening bars are welded to the flat metal bars and the abutting corners of the flat metal bars.
  • the longitudinal holes can be made much more precisely by the arrangement of the openings for welding or soldering the stiffening bars. In particular, the drilling chips can then always emerge from the openings or cutouts and do not have to be conveyed out through the total length of the holes during drilling.
  • the exemplary embodiment of a band steel punching tool shown in FIGS. 1 and 2 has a carrier plate 1 made of laminated wood, plywood or the like, in which receiving slots 2 for band steel punching knives (not shown) are introduced by laser beams.
  • the tool is intended for punching out cardboard box blanks.
  • the carrier plate 1 is completely enclosed by a metal frame 3 on its outer edges. This is composed of individual flat metal bars 4, 4 ⁇ , which are connected to one another at the corners by weld seams 5.
  • the corners 6 of the carrier plate 1 are severely broken so as to provide space for the weld area or screw area. In the area of the corners 6, the carrier plate 1 is further screwed to the metal frame 3 by screws 7. Additional screws 7 can also be provided in the intermediate areas.
  • stiffening bars are provided, namely continuous longitudinal bars 9 and cross bars 11 composed of bar parts 10, 10 Hierzu the carrier plate 1 in the middle of its plate thickness 12 with through holes 13.
  • openings 14 are arranged at a distance from one another in the carrier plate 1, through which the drilling chips produced can be easily removed during the production of the through bores. At the same time, the openings 14 enable control of the exact position of the through bores 13 and welding.
  • the rod parts 10, 10 ⁇ of the transverse rods 11 lying in the same plane are welded to the longitudinal rod or rods 9, with the ends of the rod parts 10, 10 ⁇ abutting the longitudinal rod 9 possibly being rounded to make the welding easier of the longitudinal bar 9 are adjusted.
  • the metal frame 3 is penetrated by the stiffening bars, the longitudinal bars 9 and the cross bars 11 in bores 15 and are welded there by welds 16.
  • the outer contour of the metal frame 3 is smoothed together with the welds 5 and 16.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Coating With Molten Metal (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Shearing Machines (AREA)
EP87111423A 1986-09-04 1987-08-07 Outil de poinçonnage en feuillard d'acier Ceased EP0258675A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3630121 1986-09-04
DE3630121A DE3630121C1 (de) 1986-09-04 1986-09-04 Bandstahlstanzwerkzeug zum Ausstanzen von Faltschachtelzuschnitten aus Karton

Publications (2)

Publication Number Publication Date
EP0258675A2 true EP0258675A2 (fr) 1988-03-09
EP0258675A3 EP0258675A3 (fr) 1988-09-28

Family

ID=6308912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111423A Ceased EP0258675A3 (fr) 1986-09-04 1987-08-07 Outil de poinçonnage en feuillard d'acier

Country Status (5)

Country Link
EP (1) EP0258675A3 (fr)
DE (1) DE3630121C1 (fr)
DK (1) DK431387A (fr)
FI (1) FI873808A7 (fr)
NO (1) NO873692L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034764A1 (de) * 2008-07-25 2010-01-28 Heidelberger Druckmaschinen Ag Werkzeug für eine Bogenstanzmaschine
ITFI20090083A1 (it) * 2009-04-22 2010-10-23 Wall S R L Fustella modificata

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929415A1 (de) * 1989-09-05 1991-03-07 Marbach Gmbh Karl Stanz - rillplatte
DE4010870A1 (de) * 1990-04-04 1991-10-10 Gundlach Gmbh & Co Kg E Traegerplatte fuer bandstahl-stanzwerkzeuge

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741302A (en) * 1929-03-18 1929-12-31 F E Hudson & Sons Inc Means for clamping die blocks
GB661323A (en) * 1949-05-19 1951-11-21 Montagu Knife And Cutter Works Improvements in or relating to press knives, clicking knives and similar cutters
DE1149883B (de) * 1956-04-28 1963-06-06 App Und Anlagenbau Ullrich G M Messerbefestigung an Schneidmesserkoepfen an Stanzmaschinen
US2993421A (en) * 1958-08-12 1961-07-25 Floseal Corp Die for forming carton blanks
US3105420A (en) * 1961-02-07 1963-10-01 Floseal Corp Blank forming die
DE1134880B (de) * 1961-05-24 1962-08-16 Floseal Corp Werkzeug zum Stanzen und Rillen von Zuschnitten fuer Faltschachteln
DE2011107A1 (en) * 1970-03-10 1971-09-23 Karl Marbach oHG Schnitt- und Stanzwerkzeuge, 7100 Heilbronn Composite sheet metal stamping die construction
DE2929015A1 (de) * 1979-07-18 1981-02-05 Marbach Gmbh Karl Bandstahlstanzwerkzeug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034764A1 (de) * 2008-07-25 2010-01-28 Heidelberger Druckmaschinen Ag Werkzeug für eine Bogenstanzmaschine
ITFI20090083A1 (it) * 2009-04-22 2010-10-23 Wall S R L Fustella modificata

Also Published As

Publication number Publication date
EP0258675A3 (fr) 1988-09-28
NO873692D0 (no) 1987-09-03
NO873692L (no) 1988-03-07
DK431387D0 (da) 1987-08-19
DE3630121C1 (de) 1988-03-10
FI873808A0 (fi) 1987-09-02
FI873808A7 (fi) 1988-03-05
DK431387A (da) 1988-03-05

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Inventor name: SINN, ROLF