EP0085057B1 - A punching apparatus, particularly for punching labels and similar printed matter items - Google Patents

A punching apparatus, particularly for punching labels and similar printed matter items Download PDF

Info

Publication number
EP0085057B1
EP0085057B1 EP82901962A EP82901962A EP0085057B1 EP 0085057 B1 EP0085057 B1 EP 0085057B1 EP 82901962 A EP82901962 A EP 82901962A EP 82901962 A EP82901962 A EP 82901962A EP 0085057 B1 EP0085057 B1 EP 0085057B1
Authority
EP
European Patent Office
Prior art keywords
cutting edge
punching
items
ground
tubular member
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
Application number
EP82901962A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0085057A1 (en
Inventor
Mogens Gebuhr
Knud Pedersen
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.)
BORDING GRAFIK AS
DANISH CARBIDE TOOLS AS
Original Assignee
BORDING GRAFIK AS
DANISH CARBIDE TOOLS AS
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 BORDING GRAFIK AS, DANISH CARBIDE TOOLS AS filed Critical BORDING GRAFIK AS
Priority to AT82901962T priority Critical patent/ATE15618T1/de
Publication of EP0085057A1 publication Critical patent/EP0085057A1/en
Application granted granted Critical
Publication of EP0085057B1 publication Critical patent/EP0085057B1/en
Expired 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
    • B26F1/46—Loose press knives
    • 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
    • B26F2001/4472—Cutting edge section features

Definitions

  • the invention relates to a punching apparatus for punching items having curved or arched edges from sheet material, particularly labels and similar printed matter items, in a large number of pieces by a single working operation, comprising means for supporting a stack of a large number of sheet sections each containing one of said items, and a punching die arranged above said supporting means, said supporting means and said punching die being movable relative to one another, said punching die having the form of a mainly tubular member one end of which is shaped to form a plane circumferential cutting edge corresponding to the form of said items, grinding of the cutting edge to a prescribed sharpness and cutting angle having been performed solely on the external side of the tubular member.
  • punching of the labels to their final form is performed by means of a punching die, a whole stack being supplied on to a movable pressure plate positioned below the punching die, by the subsequent activation of which the punching die cuts through the sheet sections in the stack such that by the movement of the pressure plate the punched label items are pressed through the internal cavity of the punching die.
  • a punching apparatus of the kind specified in the first paragraph of page 1 is, according to the invention, characterized in that said tubular member is manufactured from a sintered carbide alloy with an internal cavity in which at least the wall surfaces at the cutting edge are ground to smoothness and are perpendicular to the plane of the cutting edge.
  • said carbide alloy is a tungsten-cobalt alloy, which is ground on said wall surfaces to a surface roughness of Ra :0:;;; 0.1 pm.
  • the invention is based upon the recognition of the fact that in the manufacture of the punching die it is possible to grind the wall surfaces of the internal cavity which are perpendicular to the cutting edge to such a smoothness that a low friction is obtained which allows design of the internal cavity with a constant cross-section matching the punched items on a considerable portion of its length measured from the cutting edge.
  • a preferred embodiment of the punching apparatus is characterized in that said internal cavity comprises a portion adjacent said cutting edge the wall surfaces of which match the shape of said items and a succeeding portion having increased cross-sectional area.
  • the starting material is a stack or a pile 1 comprising a large number of usually rectangular sheet sections each having an individual label print.
  • Such sheet sections which are not shown in the drawing have been produced in a preceding operation from a printed sheet comprising a large number of label prints positioned side by side by cutting said sheets along straight cutting lines.
  • each of the individual sheet sections carries a label print having a well-defined position relative to the cut edges of the sheet section is supplied by means of a guide member 2 onto a supporting plate in the form of a hydraulically or pneumatically operated pressure plate 3 positioned below the punching die 4 in parallel relationship to the plane comprising the cutting edge of the printing cutter.
  • a cutting knife 5 is provided in a manner known per se in connection with the cutting edge of the punching die 4.
  • the punching die designated as a whole by 4 comprises a mainly tubular member 6 one end of which is shaped as a plane circumferential cutting edge 7 corresponding to the form of the label items to be punched.
  • the tubular member 6 is manufactured from a sintered carbide alloy for which a tungsten-cobalt alloy is preferred, most preferably an alloy containing substantially 90 percent tungsten carbide and 10 percent cobalt.
  • the tubular member 6 is manufactured with an internal cavity the wall surface 8 of which an ground to smoothness, preferably to a sourface roughness Ra ⁇ 01 Il m and are perpendicular to the plane of the cutting edge, whereas the required sharpness of the cutting edge is provided solely by grinding on the external side of the tubular member 6.
  • the grinding of the cutting edge 7 may be performed, for example, by means of a grinding machine which produces circumferential grinding in a kind of facets 9a and 9b as shown in Figure 2, of which at least the facet 9a closest to the cutting edge is ground hollow for obtaining a prescribed cutting angle at the cutting edge 7.
  • the cutting angle will preferably have to be 5° to 10°, e.g. 7°.
  • the internal cavity of the tubular member 6 comprises a portion adjacent the cutting edge 7 having ground wall surfaces matching exactly the shape of the items to be punched and a succeeding portion 10 having an increased cross-sectional area, in which the wall surfaces need not be ground to smoothness.
  • the punching die may be manufactured from a work piece of the sintered carbide alloy in a manner known per se by grinding the wall surfaces 8 of the internal cavity of the tubular member 6 into the desired label shape, e.g. as shown in Figure 3, by means of a numerically controlled grinding machine and subsequent grinding of the cutting edge 7 on the external side of the tubular member 6.

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)
EP82901962A 1981-07-10 1982-06-14 A punching apparatus, particularly for punching labels and similar printed matter items Expired EP0085057B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82901962T ATE15618T1 (de) 1981-07-10 1982-06-14 Stanzvorrichtung insbesondere zum stanzen von etiketten und sonstigen gedruckten erzeugnissen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK307181A DK149424C (da) 1981-07-10 1981-07-10 Stanseapparat til udstansning af emner med kurvede eller buede kanter fra arkformet materiale, navnlig etiketter og lignende tryksagsemner
DK3071/81 1981-07-10

Publications (2)

Publication Number Publication Date
EP0085057A1 EP0085057A1 (en) 1983-08-10
EP0085057B1 true EP0085057B1 (en) 1985-09-18

Family

ID=8118752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82901962A Expired EP0085057B1 (en) 1981-07-10 1982-06-14 A punching apparatus, particularly for punching labels and similar printed matter items

Country Status (5)

Country Link
EP (1) EP0085057B1 (it)
DE (1) DE3266359D1 (it)
DK (1) DK149424C (it)
IT (1) IT1152279B (it)
WO (1) WO1983000112A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007041799A1 (de) * 2007-08-30 2009-03-05 Volkswagen Ag Schneidwerkzeug zum Trennen von Halbzeugen, insbesondere zum Trennen und Lochen von Blechen

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218069A1 (de) * 1985-09-19 1987-04-15 Siemens Aktiengesellschaft Verfahren zum Verschweissen mittels Laserlicht
SE456886B (sv) * 1986-02-19 1988-11-14 Radiplast Ab Anordning foer vaevnadsprovtagning med hjaelp av ett naalaggregat
SE459635B (sv) * 1987-11-19 1989-07-24 Radiplast Ab Drivaggregat foer en anordning foer vaevnadsprovtagning
US5048538A (en) * 1989-11-27 1991-09-17 Vance Products Incorporated Biopsy instrument
US4958625A (en) * 1989-07-18 1990-09-25 Boston Scientific Corporation Biopsy needle instrument
USRE34056E (en) * 1989-07-31 1992-09-08 C.R. Bard, Inc. Tissue sampling device
US5284156A (en) * 1991-08-30 1994-02-08 M3 Systems, Inc. Automatic tissue sampling apparatus
US5538010A (en) * 1994-10-05 1996-07-23 Proact Ltd. Biopsy needle device
DE29922281U1 (de) * 1999-12-20 2001-04-26 Essmann + Schaefer GmbH + Co. KG, 42369 Wuppertal Schneid- und Ritzwerkzeug
EP2159013A1 (de) * 2008-08-25 2010-03-03 Essmann + Schaefer GmbH + Co. KG Schneid- und Ritzwerkzeug und Verfahren zu seiner Herstellung
US9079325B2 (en) * 2011-07-15 2015-07-14 Ellison Educational Equipment, Inc. Chemical-etched die having improved registration means
KR101960519B1 (ko) * 2017-07-20 2019-03-22 류기택 탈취금형 및 이것의 제조 방법
ES2967366T3 (es) * 2021-03-11 2024-04-29 Adolf Mohr Maschf Gmbh & Co Kg Procedimiento para el troquelado de contorno de una pila inicial de material en hojas, así como dispositivo de troquelado para la realización del procedimiento

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221365C (it) *
SE37725C1 (it) * 1914-10-14
US1922614A (en) * 1931-10-08 1933-08-15 Charles T Bradshaw Punch
GB725741A (en) * 1953-05-18 1955-03-09 Ward F D Ltd An improved press knife
GB759528A (en) * 1954-01-13 1956-10-17 Alan Ernest Wilson Improvements relating to press knives
DE1157466B (de) * 1961-12-22 1963-11-14 Hermann Bansbach Schneidwerkzeug zum Schneiden von aufeinandergeschichteten duennen Blaettern
DE2142234A1 (de) * 1971-08-24 1973-03-22 Fauth Fa Emil Stanzwerkzeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007041799A1 (de) * 2007-08-30 2009-03-05 Volkswagen Ag Schneidwerkzeug zum Trennen von Halbzeugen, insbesondere zum Trennen und Lochen von Blechen

Also Published As

Publication number Publication date
DK149424B (da) 1986-06-09
IT1152279B (it) 1986-12-31
IT8222166A0 (it) 1982-06-30
DE3266359D1 (en) 1985-10-24
DK149424C (da) 1986-11-17
DK307181A (da) 1983-01-11
IT8222166A1 (it) 1983-12-30
EP0085057A1 (en) 1983-08-10
WO1983000112A1 (en) 1983-01-20

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