[go: up one dir, main page]

EP0297324A1 - Couteau pour le découpage en feuilles - Google Patents

Couteau pour le découpage en feuilles Download PDF

Info

Publication number
EP0297324A1
EP0297324A1 EP88109208A EP88109208A EP0297324A1 EP 0297324 A1 EP0297324 A1 EP 0297324A1 EP 88109208 A EP88109208 A EP 88109208A EP 88109208 A EP88109208 A EP 88109208A EP 0297324 A1 EP0297324 A1 EP 0297324A1
Authority
EP
European Patent Office
Prior art keywords
knife
blanking
back portion
fitting groove
sheet
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.)
Granted
Application number
EP88109208A
Other languages
German (de)
English (en)
Other versions
EP0297324B1 (fr
Inventor
Chuji Yanagimoto
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.)
Laserck Corp
Original Assignee
Laserck Corp
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 Laserck Corp filed Critical Laserck Corp
Publication of EP0297324A1 publication Critical patent/EP0297324A1/fr
Application granted granted Critical
Publication of EP0297324B1 publication Critical patent/EP0297324B1/fr
Expired legal-status Critical Current

Links

Images

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 present invention relates to a knife for blanking in a sheet of thin strip (referred to as a knife hereinaf­ter), which is utilized to punch a specifically shaped hole in a sheet of paper, plastic, or corrugated paper board by press blanking.
  • the prior art knife A illustrated is of thin strip (of thickness ranging from 0.4 to 1.0 mm) and has two bevelled surfaces in its blade end. It is formed of wedge-like shape in cross section.
  • the knife A is fixedly fitted, for use, in a knife fitting groove 3 arranged in a knife holding base 2 made of wood.
  • the knife fitting groove 3 is preliminarily formed into a determined configuration (according to the shape of a blank) with the use of a jig saw or by means of laser cut­ting.
  • the widthwise measurements of the inner region of the knife fitting groove 3 may be found unequal although the cutting into an intricate configuration is possible. If the knife A is fitted into the knife fitting groove 3 under such a condition, the knife holding base 2 becomes deflected. Thus, the knife fitting groove 3 should be finished appro­priately with the use of a router.
  • the knife holding base 2 equipped securely with the knife A is then attached to a blanking press (not shown) together with a thin ferrous plate 11, a paper sheet 10, and a back plate 4.
  • a blanking press not shown
  • its height h alters to a very slight degree at the corner portions 5 of the knife A and thus, should appropriately be adjusted by the operator prior to blanking operation.
  • an inherent error in the height h of the knife A is also corrected.
  • this adjustment is made in a such way that a sheet of height adjusting paper such as a strip of tape 7 is adhesively mounted between the thin ferrous plate 11 and the back plate 4 to an area where the height h of the knife A is rather low (See Fig. 6). Additionally, the error in the height h of knife A is elimi­nated by deflecting the thin ferrous plate 11 throughout the area.
  • the knife B has a back portion 8 thereof formed in thinner relationship into a tapered configuration, as shown in Fig. 7.
  • the thinner portion can easily be deformed under pressure.
  • the knife B in such an arrangement is also fitted into a knife fitting groove 3 formed in a knife holding base 2. Then, the knife holding base 2 is attached to a blanking press together with a thin ferrous plate 11, a paper sheet 10, and a back plate 4. During test blanking operation,the back portion 8 is yieldingly compressed upon forcefully pushing the thin ferrous plate 11. Consequently, the knife B is partially adjusted automatically so that its height h can be uniform.
  • the back portion 8 is tapered and rather thinner in shape, as de­scribed above. This causes the knife holding base 2 to deflect fairly when the knife B is inserted into the knife fitting groove 3 under pressure.
  • a problem may arise such that during press blanking operation, a sheet such as a corrugated paper board 12 transported on a chain conveyor not shown is not trans­ferred smoothly as with its leading end striking the blade end 1 of the knife B attached to the knife holding base 2 (See Fig. 8).
  • the problem is likely to become more troublesome because the distance H between the blade end 1 of the knife B and the top of the corrugated paper board 12 is substantially adjusted to a small value (e.g. 4 to 5 mm) in relation to the speed-up in press blanking operation required in these days.
  • a small value e.g. 4 to 5 mm
  • the present invention is designed in view of the above mentioned aspects.
  • the present invention is directed toward a knife having a back portion thereof formed in thinner relationship and fixedly fitted in a knife fitting groove arranged in a knife holding base, in which the back portion is repeatedly flexed thicknesswisely thereof.
  • the height of the knife is automatically adjusted to be uniform as higher ends of the back portion thereof are yieldingly compressed upon forcefully striking the thin ferrous plate.
  • the back portion thereof when the knife is fitted into the knife fit­ting groove in the knife holding base, the back portion thereof will deflect according to the width of the knife fitting groove or else, the contacting areas of the side wall of the knife fitting groove to the back portion will partially yield to pressure under the stresses exerted in­tensively thereon. Accordingly, the work of finishing the knife fitting groove with a router may be omitted.
  • Figs. 1 (a), 1(b), and 1 (c) illustrate one embodiment of the knife of the present invention, in which:
  • a knife C in the primary embodiment has a back portion 8′ arranged in a thinner tapered shape and repeatedly flexed thicknesswisely thereof in wave-shaped relationship, as shown in Figs. 1 (a), 1 (b), and 1 (c).
  • the wave-shaped portion is formed by pressing operation so as to stay within a range of the thickness (represented by t in Fig. 1 (b)) of the knife C.
  • the knife C also has two bevelled surfaces in its blade end.
  • the knife C can be fitted into the knife fitting groove 3 as its back portion 8′ deflects throughout the knife fitting groove 3 or as the contacting area of the side wall of the knife fitting groove 3 to the back portion 8′ partially deflects due to a stress intensively exerted thereon, even in case that the knife fitting groove 3 is not uniform in width after having been cut e.g. by laser cutting operation. Therefore, a finishing work with the use of a router after laser cutting operation may be omitted.
  • the knife holding base 2 having the knife C fixedly fitted in the knife fitting groove 3 therein is then at­tached to a blanking press (not shown) together with a thin ferrous plate 11, a sheet 10, and a back plate 4.
  • a region of the back portion 8′ where the height h of the knife C becomes greatest is yieldingly compressed with the thin ferrous plate 11 under pressure during the test blanking operation (See Fig. 2). This allows the height h to become uniform automatically in adjustment.
  • a knife G is arranged in such a way that its back portion 8′ is formed into a plurality of tongues 9 alternately flexed thickness strictlywisely thereof.
  • a knife D has a bevelled surface so as to form a blade edge 1′.

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)
EP19880109208 1987-06-10 1988-06-09 Couteau pour le découpage en feuilles Expired EP0297324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14559087A JPS63312099A (ja) 1987-06-10 1987-06-10 シ−ト打抜用ナイフ
JP145590/87 1987-06-10

Publications (2)

Publication Number Publication Date
EP0297324A1 true EP0297324A1 (fr) 1989-01-04
EP0297324B1 EP0297324B1 (fr) 1990-10-03

Family

ID=15388603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880109208 Expired EP0297324B1 (fr) 1987-06-10 1988-06-09 Couteau pour le découpage en feuilles

Country Status (3)

Country Link
EP (1) EP0297324B1 (fr)
JP (1) JPS63312099A (fr)
DE (1) DE3860739D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928916C1 (fr) * 1989-08-31 1991-01-24 Karl Marbach Gmbh & Co, 7100 Heilbronn, De
EP0418768A3 (en) * 1989-09-22 1991-09-11 Electro Optic Ag Stamping die, method of manufacture and tool for use in carrying out said process
US5370028A (en) * 1989-08-31 1994-12-06 Karl Marbach Gmbh & Co. Strip steel punching and indenting tool
EP0655303A1 (fr) * 1993-11-26 1995-05-31 Lande Wellpappen AG Dispositif pour la découpe aux filets de formes planes
WO1997027033A1 (fr) * 1996-01-26 1997-07-31 Kimberly-Clark Worldwide, Inc. Piece rapportee de decoupe a l'emporte-piece pour matrice de coupe rotative et matrice de coupe
US6055897A (en) * 1996-06-21 2000-05-02 Kimberly-Clark Worldwide, Inc. Die cutting insert for a rotary die cutter and the die itself
US6250189B1 (en) * 1996-06-21 2001-06-26 Kimberly-Clark Worldwide, Inc. Rotary die cutter
EP2159017A1 (fr) * 2008-08-28 2010-03-03 Cartoproject S.r.l. Filière de découpage à plat et son procédé de configuration
CN102248557A (zh) * 2011-04-06 2011-11-23 昆山市三和兴激光刀模有限公司 一种新型刀模的制作工艺

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05212699A (ja) * 1992-02-03 1993-08-24 Nippon Daisuchiile Kk 紙器型抜装置に用いる抜型および該抜型の製造方法
JPH05293797A (ja) * 1992-04-17 1993-11-09 Rezatsuku:Kk ナイフの加工方法
JPH0650797U (ja) * 1992-11-30 1994-07-12 攘治 大塚 簡易ステ刃
JP2002165948A (ja) * 2000-12-05 2002-06-11 Heiwa Corp 遊技盤の加工方法
SE534677C2 (sv) * 2010-03-23 2011-11-15 Sandvik Intellectual Property Stålstanskniv
JP7064729B1 (ja) * 2021-07-08 2022-05-11 株式会社ティーエスインダストリー シート状ワークの打抜き刃

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1366757A (en) * 1973-07-10 1974-09-11 Coxhead A Cutting presses for manufacturing carton blanks and the like
FR2512704A1 (fr) * 1981-09-11 1983-03-18 Marbach Gmbh Karl Outil de decoupage a feuillard d'acier a au moins une lame de decoupage, en forme de bande, munie d'un tranchant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1366757A (en) * 1973-07-10 1974-09-11 Coxhead A Cutting presses for manufacturing carton blanks and the like
FR2512704A1 (fr) * 1981-09-11 1983-03-18 Marbach Gmbh Karl Outil de decoupage a feuillard d'acier a au moins une lame de decoupage, en forme de bande, munie d'un tranchant

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928916C1 (fr) * 1989-08-31 1991-01-24 Karl Marbach Gmbh & Co, 7100 Heilbronn, De
WO1991003358A1 (fr) * 1989-08-31 1991-03-21 Karl Marbach Gmbh & Co. Outil d'estampage et de rainurage en acier a feuillard et procede pour l'ajustage d'un tel outil
US5370028A (en) * 1989-08-31 1994-12-06 Karl Marbach Gmbh & Co. Strip steel punching and indenting tool
EP0418768A3 (en) * 1989-09-22 1991-09-11 Electro Optic Ag Stamping die, method of manufacture and tool for use in carrying out said process
CH680842A5 (fr) * 1989-09-22 1992-11-30 Electro Optic Ag
EP0655303A1 (fr) * 1993-11-26 1995-05-31 Lande Wellpappen AG Dispositif pour la découpe aux filets de formes planes
CH687448A5 (de) * 1993-11-26 1996-12-13 Lande Wellpappen Ag Vorrichtung fuer den Bandschnitt von Flaechengebilden.
WO1997027033A1 (fr) * 1996-01-26 1997-07-31 Kimberly-Clark Worldwide, Inc. Piece rapportee de decoupe a l'emporte-piece pour matrice de coupe rotative et matrice de coupe
US6055897A (en) * 1996-06-21 2000-05-02 Kimberly-Clark Worldwide, Inc. Die cutting insert for a rotary die cutter and the die itself
US6250189B1 (en) * 1996-06-21 2001-06-26 Kimberly-Clark Worldwide, Inc. Rotary die cutter
EP2159017A1 (fr) * 2008-08-28 2010-03-03 Cartoproject S.r.l. Filière de découpage à plat et son procédé de configuration
CN102248557A (zh) * 2011-04-06 2011-11-23 昆山市三和兴激光刀模有限公司 一种新型刀模的制作工艺

Also Published As

Publication number Publication date
DE3860739D1 (de) 1990-11-08
JPS63312099A (ja) 1988-12-20
EP0297324B1 (fr) 1990-10-03
JPH0558878B2 (fr) 1993-08-27

Similar Documents

Publication Publication Date Title
EP0297324A1 (fr) Couteau pour le découpage en feuilles
US10926430B2 (en) Device for stripping and blanking operations
US3835746A (en) Die assembly and rule mounting means therefor
US3182530A (en) Construction for steel rule cutting dies
FI98135C (fi) Laite poistettavien osien, kuten jätepalojen, poistamiseksi leikkauksia tai vastaavia sisältävistä raaka-ainearkeista
EP0454753B1 (fr) Procede et appareil de decoupage a l'emporte-piece de materiaux d'emballage
EP0085057B1 (fr) Appareil de poinconnage, en particulier pour poinconner des etiquettes et autres articles imprimes
US4012978A (en) Die cutting rule
US5176061A (en) Blanking cutter
US4249432A (en) Ruled scoring die
FI85236C (fi) Bandstaolsstansverktyg med ett elastiskt profilband.
EP0334439B1 (fr) Poinçon
US4665779A (en) Method for making stripping dies
JP2000289124A (ja) 罫線入り段ボールシート、押罫部材、罫入れ用型板および罫入れ装置
JP2001030377A (ja) 罫線形成体および罫線形成方法
JP2000288997A (ja) 段ボールシートの押し潰し用複合弾性体およびシート打抜き型
JP7209407B1 (ja) 打抜き機
JP3908329B2 (ja) ジッパー打ち抜きブレード及び打ち抜き型
JPS5940202Y2 (ja) 罫押用溝形成体
US4043233A (en) Method of preventing multi-sheet feeding
JPH0624197Y2 (ja) 罫押し用受け溝形成材
JPH10244498A (ja) 打抜機用雌型及び打抜方法
JP3041886U (ja) 打抜型
CA2602887C (fr) Dispositif de levage pour les operations de decoupage
JPH0698420B2 (ja) ナイフの加工方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880623

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB SE

17Q First examination report despatched

Effective date: 19890925

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB SE

REF Corresponds to:

Ref document number: 3860739

Country of ref document: DE

Date of ref document: 19901108

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 88109208.4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000526

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000531

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010609

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20070611

Year of fee payment: 20

EUG Se: european patent has lapsed