EP2039482B1 - Couteau à segment - Google Patents

Couteau à segment Download PDF

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Publication number
EP2039482B1
EP2039482B1 EP08164822A EP08164822A EP2039482B1 EP 2039482 B1 EP2039482 B1 EP 2039482B1 EP 08164822 A EP08164822 A EP 08164822A EP 08164822 A EP08164822 A EP 08164822A EP 2039482 B1 EP2039482 B1 EP 2039482B1
Authority
EP
European Patent Office
Prior art keywords
cutting
knife
segment
insert
inserts
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.)
Not-in-force
Application number
EP08164822A
Other languages
German (de)
English (en)
Other versions
EP2039482A1 (fr
Inventor
Matthias Teufel
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
Priority to PL08164822T priority Critical patent/PL2039482T3/pl
Priority to SI200830023T priority patent/SI2039482T1/sl
Publication of EP2039482A1 publication Critical patent/EP2039482A1/fr
Application granted granted Critical
Publication of EP2039482B1 publication Critical patent/EP2039482B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0033—Cutting members therefor assembled from multiple blades
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/14—Forming notches in marginal portion of work by cutting
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2642—Means for adjusting the position of the cutting member for slotting cutters

Definitions

  • the invention relates to a segment knife according to the preamble of patent claim 1.
  • the invention relates generally to the field of segmented blades for making a slot in a packaging material, in particular corrugated board.
  • segment knives are mounted on a rotating roll of a rotary cutting machine.
  • the segment blade which is also referred to as the upper blade, is moved in a slot formed by two lower blades arranged in parallel.
  • a slot is produced in the corrugated board located between the segment blade and the lower blades.
  • a segment knife according to the preamble of claim 1 is known from DE 20 2004 004 275 U1 known.
  • a provided on a plate-like knife body convexly curved cutting section must be reground again and again to achieve perfect cutting result.
  • the segment knife must be removed from a rotary cutting machine and subsequently transmitted to a grinding operation specialized in the grinding of such knives. Grinding the segment knives is costly and time consuming.
  • the object of the invention is to eliminate the disadvantages of the prior art. It should be specified in particular a segment knife with improved durability.
  • an exchangeable first cutting insert is provided at least at one end of the cutting section.
  • the end which first dips into the slot formed by the lower blade during the cutting process, wears particularly strong. This is attributed to the fact that the segment knife z. B. due to vibrations or the like. Not always exactly immersed in the slot formed by the lower blade. It may happen that when the segment knife plunges, the cutting edge located at one end collides with a cutting edge of the lower blade. As a result, the segment knife wears particularly strong at one end of the cutting section and must therefore be reworked.
  • the reworking of the segment blade can be delayed by replacing the first cutting insert and thus its durability or service life can be increased.
  • the replacement of the first cutting insert can advantageously be carried out on site at the operator of a rotary cutting machine. For this purpose, it is particularly not necessary to transmit the segment knife under cost and time to a specialized in the revision of segment knives grinding operation.
  • an exchangeable second cutting insert is provided at the other end of the cutting section.
  • a segment knife is particularly suitable for rotary cutting machines in which alternately the one and the other end of the cutting portion first dips into the slot formed by the lower blade. Apart from that, such a segment knife can also be turned, that is mounted on the rotary cutting machine that instead of a worn first cutting insert the second cutting insert dips into the slot formed by the lower blade.
  • the cutting portion between the two ends on two cutting edges made on the knife body Between the two cutting edges is usually a groove.
  • the cutting edges may be formed in the form of a bow portion and in addition also wavy.
  • corrugated cutting edges d. H. Serrated cutting edges are particularly well suited for making a cut or slit in a packaging material such as corrugated board.
  • the cutting section has a plurality of third cutting inserts detachably fastened next to one another on the knife body.
  • the cutting portion may have a groove for receiving the third cutting inserts.
  • the third cutting inserts on a square outline.
  • the third cutting inserts can be rotated by 90 ° at a wear of the opposite edges.
  • the proposed third cutting inserts thus have two benefits.
  • the period until the replacement of the third cutting inserts can be considerably extended.
  • the groove has beveled inner flanks and the third cutting inserts have correspondingly bevelled side surfaces to the chamfered inner flanks.
  • the third cutting inserts advantageously center themselves when being fastened to the knife body.
  • the knife body serves only as a carrier for fixing the cutting inserts.
  • the replacement and / or turning of the cutting inserts requires no special expertise or the use of grinding machines.
  • the segment knife according to the invention can be easily repaired on site again.
  • the second and the third cutting insert may have the same geometry.
  • the third cutting insert may also replace the second cutting insert.
  • the first cutting insert is designed in the form of a cutting nose projecting from the cutting section.
  • the cutting inserts proposed according to the invention can be designed differently with respect to their material properties and thus are particularly well adapted to different stresses acting on the cutting section.
  • the first cutting insert and / or the second cutting insert of a first metal and the third cutting inserts can be made of a material whose hardness is greater than that of the first metal.
  • the material used to make the third cutting inserts may be a cemented carbide or a ceramic.
  • the first and / or the second cutting insert can also be produced from a first metal conventionally used to produce the knife body.
  • a possible collision of the first and / or second cutting insert with an edge of the lower blade there is only a deformation or abrasion.
  • the third cutting inserts can be made of a particularly hard material, in particular hard metal or ceramic.
  • the cutting edges formed by the third cutting inserts mounted next to one another on the knife body can be modeled on conventional cutting edges. You can describe a bow line.
  • the cutting edges can also be modeled on a serrated edge.
  • a second metal can advantageously also be used to produce the knife body. It may be a steel that has a lower hardness than the first metal and is therefore easier to work.
  • a knife body 1 is made of a metal plate, which z. B. may have a thickness of 6 to 125 mm.
  • This metal plate 1 has a convex curved Cutting section SA on.
  • the cutting section SA has two first cutting edges K1 and K2 extending in parallel planes.
  • a first cutting insert 3 is attached at one end E1 of the cutting portion SA is detachable, z. B. by means of a first screw 2, a first cutting insert 3 is attached.
  • the first cutting insert 3 is positively received in a corresponding thereto on the knife body 1 recess.
  • the first cutting insert 3 is provided here with a cutting nose 4 protruding beyond the cutting section SA.
  • a - not shown here - second cutting insert be releasably secured.
  • the second cutting insert may be formed in its geometry corresponding to the first cutting insert 3, so that the segment blade is formed symmetrically with respect to a plane perpendicular to the first cutting edges K1, K2 symmetry plane.
  • the entire cutting section SA is formed by the flush adjacent cutting inserts 5.
  • the knife body 1 is provided on its convexly curved side with a groove 7, the inner edges 8 with an outer side A of the knife body 1 an angle ⁇ of 8 to 18 °, preferably 10 to 13 °, include.
  • One of the groove 7 facing portion 9 of the side surfaces S of the third cutting inserts 5 is associated with a to the angle ⁇ of the inner edges 8 Beveled, so that the third cutting inserts 5 are positively and thus self-centering inserted into the groove 7.
  • each of the third cutting inserts 5 sits with its bottom 10 on a base 11 of the groove 7.
  • the base 11 of the groove 7 is formed of a plurality of adjacent flat surfaces, in the center of each a threaded hole for fixing the second screw 6 is provided.
  • The, preferably concavely curved, cutting surface 12 is bounded by four, preferably concave curved, further cutting edges k1 to k4.
  • an opening 13 for passing the second screw 6 is provided in the center of the cutting surface 12.
  • the geometry of the third cutting inserts 5, in particular the geometry of the further cutting edges k1 to k4, is designed such that, when the third cutting inserts 5 are mounted on the knife body 1, there are continuous first cutting edges K1, K2.
  • a width B in the cross section of the third cutting insert 5 is greater than its height H extending from the bottom 10 in the direction of the cutting surface 12.
  • the ratio of width B to height H can be between 1: 1 and 1: 2. Conveniently, the ratio of width B to height H is in the range of 1.3 to 1.7.
  • a further first cutting insert 14 is releasably attached instead of the first cutting insert 3.
  • the further first cutting insert 14, unlike the first cutting insert 3, has no projecting cutting nose 4.
  • a similarly shaped - not shown here - another second cutting insert at the second end E2 of the cutting portion SA can be releasably attached.
  • the knife body 1 is suitably made of a surface hardened steel, for. B. Nitriding steel no. 1.8550 (DIN 17007) with a Rockwell hardness of about 56 HRC.
  • the first cutting insert 3, the further first cutting insert 14 and possibly provided second cutting inserts can advantageously be produced from the following metals: Nos. 1.7847, 1.7436 or 1.7379 (DIN 17007). Such metals have a Rockwell hardness of 58-60 HRC.
  • the third cutting inserts 5 are made of a material that is harder than the metals used to make the knife body 1 or the first and second cutting inserts 3, 14. It may expediently be the following materials: ceramic, hard metal, in particular hard metal with a Rollwell hardness in the range of 85-90 HRA, preferably 87-89 HRA. Such hard metals are z. B. offered by the company Plansee GmbH under the product names "B30S" or "B40S".
  • segmented blade proposed according to the invention with detachable cutting inserts provided thereon, it is possible to considerably increase the durability of the segmented blade.
  • a repair of the segment knife can be done by simply changing or turning the cutting inserts. The repair can therefore be carried out with less effort and in particular at the site of the operator of a rotary cutting machine.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Surgical Instruments (AREA)
  • Food-Manufacturing Devices (AREA)
  • Supercharger (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (13)

  1. Couteau à segmente pour la réalisation d'une fente dans un matériau d'emballage, en particulier dans du carton ondulé, du carton ou sim., avec un corps de couteau (1) de forme plate présentant un segment de coupe (SA) courbé,
    caractérisée en ce qu'
    une première plaquette de coupe (3) interchangeable est prévue au moins à une extrémité (E1) du segment de coupe (SA).
  2. Couteau à segmente selon la revendication 1, où une deuxième plaquette de coupe interchangeable est prévue à l'autre extrémité (E2) du segment de coupe (SA).
  3. Couteau à segmente selon l'une des revendications précédentes, où le segment de coupe (SA) entre les deux extrémités (E1, E2) présente deux arêtes de coupe (K1, K2) réalisées au niveau du corps du couteau (1).
  4. Couteau à segmente selon la revendication 1 ou 2, où le segment de coupe (SA) présente une majorité de troisièmes plaquettes de coupe (5) côte à côte fixées de manière amovible sur le corps du couteau (1).
  5. Couteau à segmente selon la revendication 4, où le segment de coupe (SA) présente une rainure (7) pour le logement des troisièmes plaquettes de coupe (5).
  6. Couteau à segmente selon la revendication 4 ou 5, où les troisièmes plaquettes de coupe (5) présentent un contour quadratique.
  7. Couteau à segmente selon l'une des revendications 4 à 6, où la rainure (7) présente des flancs intérieurs biseautés (8) et les troisièmes plaquettes de coupe (5) des faces latérales biseautées (9) correspondant aux flancs intérieurs biseautés (8).
  8. Couteau à segmente selon l'une des revendications 4 à 7, où la deuxième plaquette de coupe (5) et les troisièmes plaquettes de coupe présentent la même géométrie.
  9. Couteau à segmente selon l'une des revendications 4 à 8, où la première plaquette de coupe (3) et les troisièmes plaquettes de coupe (5) présentent la même géométrie.
  10. Couteau à segmente selon l'une des revendications précédentes, où la première plaquette de coupe (3) est réalisée sous forme d'une pointe de coupe (4) en saillie du segment de coupe (SA).
  11. Couteau à segmente selon l'une des revendications 4 à 10, où la première plaquette de coupe (3) et/ou la deuxième plaquette de coupe (5) sont réalisées en un premier métal et les troisièmes plaquettes de coupe en un matériau dont la dureté est supérieure à celle du premier métal.
  12. Couteau à segmente selon la revendication 11, où le matériau est un métal dur ou de la céramique.
  13. Couteau à segmente selon la revendication 11 ou 12, où le corps du couteau (1) est réalisé à partir du premier métal ou à partir d'un deuxième métal.
EP08164822A 2007-09-22 2008-09-22 Couteau à segment Not-in-force EP2039482B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08164822T PL2039482T3 (pl) 2007-09-22 2008-09-22 Nóż segmentowy
SI200830023T SI2039482T1 (sl) 2007-09-22 2008-09-22 Segmentni nož

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007045351A DE102007045351B3 (de) 2007-09-22 2007-09-22 Segmentmesser

Publications (2)

Publication Number Publication Date
EP2039482A1 EP2039482A1 (fr) 2009-03-25
EP2039482B1 true EP2039482B1 (fr) 2010-01-20

Family

ID=39884891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08164822A Not-in-force EP2039482B1 (fr) 2007-09-22 2008-09-22 Couteau à segment

Country Status (6)

Country Link
EP (1) EP2039482B1 (fr)
AT (1) ATE455631T1 (fr)
DE (2) DE102007045351B3 (fr)
DK (1) DK2039482T3 (fr)
PL (1) PL2039482T3 (fr)
SI (1) SI2039482T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3622056B1 (ja) * 2003-12-04 2005-02-23 近畿刃物工業株式会社 切断加工用刃物
AT510302B1 (de) * 2010-09-02 2014-11-15 Boehlerit Gmbh & Co Kg Messer zum einbringen eines schlitzes in einem verpackungswerkstoff und schneidplatte hierfür
JP6227185B1 (ja) * 2017-07-04 2017-11-08 近畿刃物工業株式会社 切込生成刃
WO2024060498A1 (fr) * 2022-09-23 2024-03-28 云南中烟工业有限责任公司 Structure de dispositif de coupe pour couper une tige de filtre en fibre d'acide polylactique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823907A1 (de) * 1988-07-14 1990-01-18 Feldmuehle Ag Klemmhalter fuer rundschneidplatten
US5144874A (en) * 1991-05-20 1992-09-08 Garrett Jimmy R Rotary cutter knife
JP3622056B1 (ja) * 2003-12-04 2005-02-23 近畿刃物工業株式会社 切断加工用刃物
DE202004004275U1 (de) * 2004-03-17 2004-06-03 Imabt Weichselbaum Inh. Bernhard Teufel E.K. Messer für eine Schneidvorrichtung

Also Published As

Publication number Publication date
DK2039482T3 (da) 2010-05-25
ATE455631T1 (de) 2010-02-15
DE102007045351B3 (de) 2009-04-16
PL2039482T3 (pl) 2010-06-30
DE502008000333D1 (de) 2010-03-11
SI2039482T1 (sl) 2010-05-31
EP2039482A1 (fr) 2009-03-25

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