EP2473434A1 - Outil de coupe - Google Patents

Outil de coupe

Info

Publication number
EP2473434A1
EP2473434A1 EP10745216A EP10745216A EP2473434A1 EP 2473434 A1 EP2473434 A1 EP 2473434A1 EP 10745216 A EP10745216 A EP 10745216A EP 10745216 A EP10745216 A EP 10745216A EP 2473434 A1 EP2473434 A1 EP 2473434A1
Authority
EP
European Patent Office
Prior art keywords
cutting edge
cutting tool
hollow body
cutting
wall
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
EP10745216A
Other languages
German (de)
English (en)
Other versions
EP2473434B1 (fr
Inventor
Daniel Anderegg
Roger Anderegg
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.)
Dulco GmbH
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 EP20100745216 priority Critical patent/EP2473434B1/fr
Publication of EP2473434A1 publication Critical patent/EP2473434A1/fr
Application granted granted Critical
Publication of EP2473434B1 publication Critical patent/EP2473434B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B7/00—Hand- or power-operated devices for opening closed containers
    • B67B7/30—Hand-operated cutting devices

Definitions

  • the invention relates to a cutting tool for
  • Such cutting tools are known. They are e.g. used for opening cans or beverage cans. Usually this is done from a e.g. cylindrical canning or beverage can cut the end face by the cutting tool, wherein a part of the can wall is partially or completely cut out. If only partially cut out, the cut-out portion of the can wall can be bent into or out of the can to create a sufficiently large opening in the can.
  • Cutting knife is ground.
  • a cutting tool is pressed with its cutting blade against a can wall, with sufficient sharp cutting blade and / or sufficiently strong pressing of the cutting blade against the can wall, the part of the can wall can usually be easily cut out.
  • the cut out part of the can falls out of the inside of the cylinder and falls into the can. As for the difference between falling out
  • the invention has for its object to provide a cutting tool of the type described above, which works reproducibly and in the virtually no chips, especially no metal chips
  • the invention provides a cutting tool ready for cutting a flat portion of a flat structure, in particular a thin-walled wall portion of a
  • Cutting tool is formed by a main body.
  • This main body has, at least in a partial region, a prism-shaped hollow body with a prism-shaped jacket wall, the end edge of which as one extends along the entire circumferential direction of the prism-shaped hollow body
  • the main body also has a
  • Mantle wall has a course along the circumferential direction
  • the cutting edge Front edge at least in two cutting edge peripheral regions each having a cutting edge along the axial direction cutting edge portion, on the inside of the prism-shaped outer wall surface has a recess adjacent to the respective projecting cutting edge portion of the cutting edge.
  • Axial direction orthogonal plane e.g. When cutting out a section of a flat structure, a bulge, which corresponds to the bulge in said projection of the cutting edge profile, is formed on the cut-out flat section.
  • Cutting edge sections each with a recess adjacent to this cutting edge portion in the shell wall inner surface is obtained when cutting the portion of the sheet a section with two lobes.
  • Wall sections clamp tightly enough to prevent their uncontrolled falling out of the prismatic hollow body. On the other hand, they do not clamp so hard that you have to exert very large impact forces for their ejection.
  • To produce the cutting tool according to the invention it is possible to start from a prism-shaped hollow body which forms the main body of the cutting tool. It is then possible in a first step of the front edge, which extends around the end opening of this hollow body around, eg by grinding and sharpening a cutting edge course along the circumferential direction, the different axial positions, ie axially projecting cutting edge sections along the axial direction of the prismatic hollow body Has. In a second step, the recesses can then be worked into the jacket wall inner surface in the areas of the protruding cutting edge sections. In the places where the
  • the two steps can also be performed in reverse order. After having made the recesses in the shell wall inner surface of the base body in a first step, the grinding and sharpening takes place in a second step, wherein it ensures that the cutting edge produced crosses the recesses. In the places where the cutting edge crosses the recesses, bulges arise in the projection of the cutting edge course.
  • the cutting edge has at least in two circumferential regions in the axial direction in each case a projecting portion, on which the shell wall inner surface along the axial direction to the
  • Cutting edge has an oblique course, wherein the measured from a longitudinal axis of the prism-shaped hollow body radial distance to Mantelmantel- inner surface increases along the axial direction to the cutting edge.
  • Penetration of the cutting edge in the container wall causes a defined deformation of the cut-out wall portion on the inner wall of the prismatic hollow body and, if necessary, also a compression of the
  • the cutting tool according to the invention is suitable for cutting thin metal (sheet metal), in particular aluminum, and for cutting thin polymer material (foil, sheets, thin plates), in particular polyethylene terephthalate (PET), polybutylene terephthalate (PBT), cellulose-based material such as paper or cardboard , or starch-based materials such as flat-rolled or pressed foods.
  • sheet metal sheet metal
  • thin polymer material foil, sheets, thin plates
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • cellulose-based material such as paper or cardboard
  • starch-based materials such as flat-rolled or pressed foods.
  • the cutting tool is heated.
  • an optimum cutting tool temperature for cutting can then be set.
  • the oblique course of the shell wall inner surface may be formed by a flat ground or by a curved ground.
  • the jacket wall outer surface preferably also has an oblique course along the axial direction up to the cutting edge, wherein the radial distance measured from a longitudinal axis of the prismatic hollow body to the jacket wall outer surface decreases along the axial direction towards the cutting edge.
  • the peripheral regions are distributed uniformly with the axially protruding portions along the circumferential direction.
  • the prism-shaped hollow body may have a circular, an oval or a polygonal cross-section.
  • a cylindrical cutting tool with a circular cross section is particularly easy to produce.
  • the pits may be e.g. be prepared by grinding an annular groove on the cylindrical shell wall inner surface. Thereafter, the protrusions in the projection of the cut edge course can be made by crossing the previously prepared annular groove during grinding and sharpening of the cylinder wall end edge. Again, the order of the two steps can be reversed.
  • the prism-shaped shell wall at least in the region of its cutting edge made of steel, ceramic or tungsten carbide.
  • the axial length (b) of the area with the recess on the shell wall inner surface at the projecting portions is smaller than the maximum difference (a) of
  • the jacket wall inner surface of the prism-shaped hollow body has a microscopically rough surface and / or macroscopic elevations at least in an axial subregion of the inner surface.
  • the cutting tool has a plunger, which extends through a plunger opening of the base body and / or stored in this, and which is axially reciprocally movable inside the prism-shaped hollow body, so that contained in the interior of the hollow body cut wall portions of the hollow body can be ejected.
  • the cutting tool has an outlet opening in addition to the end opening, so that in the interior of the
  • prism-shaped hollow body previously recorded and optionally stacked cut wall sections can be ejected into the hollow body later nach Kohlende cut wall sections.
  • a suction device may be connected to the outlet opening, so that contained in the interior of the hollow body
  • cut-wall sections can be sucked out of the hollow body.
  • the connecting portion of the cutting tool may include a handle.
  • the prism-shaped hollow body can have an expanded cross-section in a partial region of its inner wall along its axial direction. In this axial region of the hollow body cut-out sections can be loosely stacked, so that after a certain number of ⁇ réellesl. Cut out the ejection of the in the cavity
  • Fig. 1 shows a plan view of a first embodiment of the cutting tool according to the invention along its longitudinal axis L;
  • Fig. 2 shows a side view of the embodiment of Fig. 1 transverse to its longitudinal axis L;
  • Fig. 4 is a view of the cutting tool according to the invention along the sectional plane X-X of Fig. 1;
  • Fig. 5 is a view of the cutting tool according to the invention along the sectional plane Y-Y of Fig. 1;
  • Fig. 6 is a plan view of a cut-out flat portion, which with a cutting tool according to the first
  • Embodiment has been prepared
  • Fig. 7 shows a plan view of a second embodiment of the cutting tool according to the invention along its longitudinal axis L;
  • Fig. 8 shows a side view of the embodiment of Fig. 7 transverse to its longitudinal axis L;
  • Fig. 10 is a view of the cutting tool according to the invention along the sectional plane XX of Fig. 7;
  • Fig. 11 is a view of the cutting tool according to the invention along the sectional plane Y-Y of Fig. 7;
  • Fig. 12 is a plan view of a cut-out flat portion, which with a cutting tool according to the second
  • Fig. 1 is a plan view of a first embodiment of the inventive cutting tool 1 along its longitudinal axis L is shown.
  • the cutting tool 1 is for cutting out a thin-walled wall portion from a container, such as a container. a beverage can (not shown), and for receiving the cut wall portion in the cutting tool. 1
  • the cutting tool 1 has along its
  • Cutting edge 5 four protruding portions 5a, 5b, 5c and 5d and four retracted portions 5e, 5f, 5g and 5h (see also Fig. 2).
  • connection portion 6 there is provided a central hole 6a to which the cutting tool 1 can be connected to a drive means (not shown).
  • FIG. 2 is a side view of the embodiment of FIG. 1 is shown transversely to its longitudinal axis L.
  • the cutting tool 1 is formed by a main body 2, which has a prism-shaped hollow body 3 in a partial region.
  • This hollow body 3 is formed by a prismatic shell wall 4, the end edge 5 as a along the
  • the drive means may be a hand operated, levered machine in which the cutting tool up and down by muscle power via a lever assembly can be moved.
  • a can eg beverage can, can be fixed in the machine.
  • the cutting edge 5 has a course along its circumferential direction with different axial positions in the axial direction of the prism-shaped hollow body 3.
  • the cutting edge 5 has four
  • the jacket wall inner surface 4a along the axial direction to the cutting edge 5 has an oblique course 7a (see Fig. 3).
  • the radial distance Ri measured from the longitudinal axis L of the prism-shaped hollow body 3 increases from the longitudinal axis L to the casing wall inner surface 4a along the axial direction towards the cutting edge 5.
  • Mantle wall inner surface 4a no oblique course 7a (see Fig. 3).
  • the radial distance Ri measured from the longitudinal axis L of the prismatic hollow body 3 is constant from the longitudinal axis L to the shell wall inner surface 4a along the axial direction.
  • the lid when moving the cutting tool 1 downwards against a can, the lid can be cut open at the can end face and finally cut out.
  • the can lid At the protruding portions 5a, 5b, 5c and 5d, which are rounded tips, the can lid is first pierced. During the subsequent further penetration of the sections 5e, 5f, 5g and 5h of the cutting tool 1 into the can lid, the latter is completely cut out and is clamped in the interior 11 of the hollow body 3 by the jacket wall inner surface 4a.
  • Fig. 3 is an enlarged view of a detail of
  • FIG. 1 An oblique course 7a in the form of an oblique cut on the cutting edge 5 can be seen on the casing wall inner surface 4a.
  • This oblique course 7a is only at the regions with the projecting portions or rounded tips 5a, 5b, 5c and 5d of the casing wall inner surface 4a formed.
  • the jacket wall inner surface 4a has no oblique course 7a.
  • Fig. 4 is a view of the inventive
  • Cutting tool 1 along the sectional plane X-X of Fig. 1 is shown, and in Fig. 5 is a view of the cutting tool according to the invention along the sectional plane Y-Y of Fig. 1 is shown.
  • the acute angle f is in the range of 5 ° to 90 °, preferably in the range of 10 ° to 60 °, and most preferably in the range of 25 ° to 45 °.
  • the acute angle f is the angle at the pointed point
  • the chamfer 7a forms an angle d to the longitudinal axis L.
  • the chamfer 7b forms an angle e to the longitudinal axis L.
  • the acute angle f is the sum of the angles d and e.
  • Fig. 4 shows a section through a protruding portion 5b as one of the four protruding portions (see section X-X in Fig. 1).
  • the cylindrical wall surface 4 a is a cylinder wall with radius Ri (see Fig. 2) and has only in the region of the cutting edge 5 an oblique course 7 a, as a flat or can be designed as a conical cut.
  • the jacket wall outer surface 4b is a cylinder wall with radius Ra (see FIG. 2) and, in the region of the cutting edge 5, likewise has an oblique course 7b, which is designed as a conical cut and extends along the entire circumferential direction of the cutting tool 1.
  • the protruding section 5b of the cutting edge 5 shown in section in FIG. 4 serves as a "pre-cutter.” The other three functions have the same function
  • Fig. 5 shows a section through retracted portion 5f as one of the four retracted portions (see section Y-Y in Fig. 1).
  • the cylindrical jacket wall 4 extends from the connection region 6 to the cutting edge 5.
  • the jacket wall inner surface 4a is a cylinder wall with radius Ri (see FIG. 2) and has no oblique course 7a only in the region of the cutting edge 5.
  • the jacket wall outer surface 4b is a
  • Cutting edge 5 also has an oblique course 7b, which is formed as a conical cut and extends along the entire circumferential direction of the cutting tool 1.
  • oblique course 7b is formed as a conical cut and extends along the entire circumferential direction of the cutting tool 1.
  • the recessed portion 5f of the cutting edge 5 serves as a "trimmer.”
  • the other functions have the other retracted portions 5e, 5g and 5h of the cutting edge 5.
  • These four trimmers 5e, 5f, 5g and 5h are also uniformly distributed along the circumferential direction of the cutting tool 1.
  • the axial length b of the inclined slope portion 7a on the precuters 5a, 5b, 5c and 5d of the shell wall inner surface 4a is smaller than the maximum axial difference a between the various projected axial positions 5a, 5b, 5c, 5d and the various retracted ones axial positions 5e, 5f, 5g, 5h of the cutting edge 5 along the
  • the inventive cutting tool 1 is suitable for cutting
  • a thin-walled wall section from a tin can e.g. an aluminum beverage can, or from a polymer container, such as e.g. a container made of polyethylene terephthalate (PET), and for receiving the cut-out wall portion in the interior 1 1 of the cutting tool.
  • a polymer container such as e.g. a container made of polyethylene terephthalate (PET)
  • PET polyethylene terephthalate
  • Cutting edge positions of the pre-cutters 5a, 5b, 5c and 5d certain large or external cutting circle SKG at a respective tooth tip has a larger diameter than that determined by the cutting edge positions of the trimmers 5e, 5f, 5g and 5h small or inner cutting circle SKK on a respective tooth base (see Fig. 5).
  • Hollow body 3 a portion 4c of its inner wall, which has an expanded cross-section along its axial direction.
  • cut-out portions 12 can be loosely stacked, so that after a certain number of opening or cutting operations, the ejection of the in the cavity 3
  • accumulated sections 12 can be done without much effort.
  • Fig. 6 is a plan view of a cut-out flat portion 12 is shown, which was prepared with a cutting tool 1 according to the first embodiment.
  • the outer edge 13 of the portion 12 has four circumferentially uniformly distributed protrusions 13a, 13b, 13c and 13d (exaggerated) made by the protruding portions 5a, 5b, 5c and 5d, respectively.
  • the course of the projection of the cutting edge 5 corresponds to the course of the
  • Fig. 7 is a plan view of a second embodiment of the inventive cutting tool along its longitudinal axis L is shown. This second embodiment differs from the first embodiment
  • Embodiment in that in the projecting portions 5a ', 5b', 5c 'and 5d' a recess 7a 'is provided in the form of an annular groove.
  • This recess 7a 'does not abut the tip of the respective projecting portions 5a', 5b ', 5c' and 5d '.
  • the projection of the cutting edge profile has a bulge.
  • FIGS. 7 to 12 parts which carry the same reference numerals as in FIGS. 1 to 6 are identical to these parts.
  • Fig. 12 is a plan view of a cut-out flat portion 12 'shown with a cutting tool V according to the second Embodiment was made.
  • the outer edge 13 'of the portion 12' has four circumferentially uniformly distributed bulge pairs 13a ', 13b', 13c 'and 13d' (exaggerated) formed by the protruding portions 5a ', 5b', 5c 'and 5d', respectively were.
  • the profile of the projection of the cutting edge 5 ' corresponds to the course of the outer edge 13' of the portion 12 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling Tools (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
  • Food-Manufacturing Devices (AREA)
  • Milling Processes (AREA)

Abstract

L'invention concerne un outil de coupe (1, 1') pour découper une partie de paroi mince dans un réservoir, la partie de paroi (12, 12') découpée étant logée dans l'outil de coupe (1, 1'). L'outil de coupe convient pour la découpe de parois minces de réservoirs en tôle ou en polymère.
EP20100745216 2009-09-01 2010-08-17 Outil de coupe Not-in-force EP2473434B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100745216 EP2473434B1 (fr) 2009-09-01 2010-08-17 Outil de coupe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP09169165 2009-09-01
EP09170205A EP2289837A1 (fr) 2009-09-01 2009-09-14 Outil de coupe
PCT/EP2010/061969 WO2011026729A1 (fr) 2009-09-01 2010-08-17 Outil de coupe
EP20100745216 EP2473434B1 (fr) 2009-09-01 2010-08-17 Outil de coupe

Publications (2)

Publication Number Publication Date
EP2473434A1 true EP2473434A1 (fr) 2012-07-11
EP2473434B1 EP2473434B1 (fr) 2015-04-29

Family

ID=41376310

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09170205A Withdrawn EP2289837A1 (fr) 2009-09-01 2009-09-14 Outil de coupe
EP20100745216 Not-in-force EP2473434B1 (fr) 2009-09-01 2010-08-17 Outil de coupe

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09170205A Withdrawn EP2289837A1 (fr) 2009-09-01 2009-09-14 Outil de coupe

Country Status (5)

Country Link
US (1) US8656599B2 (fr)
EP (2) EP2289837A1 (fr)
CN (1) CN102639430A (fr)
ES (1) ES2543096T3 (fr)
WO (1) WO2011026729A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9054218B2 (en) 2013-08-07 2015-06-09 International Business Machines Corporation Method of manufacturing a FinFET device using a sacrificial epitaxy region for improved fin merge and FinFET device formed by same

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1789729A (en) * 1926-10-13 1931-01-20 Continental Can Co Can-end-cutting device
US2095660A (en) * 1936-08-10 1937-10-12 George W Dooley Can opener
US3111995A (en) * 1960-09-06 1963-11-26 Hendrick C Dahl Sprinkler head trimmer
US3171200A (en) * 1962-09-26 1965-03-02 Reginald J Poppenga Carpet repair tool
US3786564A (en) * 1972-10-19 1974-01-22 M Acheson Carpet plug cutter
US3874078A (en) * 1972-10-27 1975-04-01 Fmc Corp Can opener with helically mounted blade
US3821850A (en) * 1972-12-20 1974-07-02 Blum Inc Can opener
GB2071600A (en) * 1980-03-19 1981-09-23 British Nuclear Fuels Ltd Container-cutting device
US5429022A (en) * 1992-04-28 1995-07-04 Mitsubishi Yuka Bio-Clinical Laboratories, Inc. Opening machine for film seal cap
GB9211497D0 (en) * 1992-05-30 1992-07-15 Rigby Michael E Tool for opening a container
US5461788A (en) * 1994-09-08 1995-10-31 Taylor; Jack Grass trimming device for pop-up sprinklers
GB2305655B (en) * 1995-09-27 1999-05-05 Francis Clark Opening device
US6854524B1 (en) * 2003-02-21 2005-02-15 Rudolph C. Williams Tools and methods to trim excess vegetation from growing plants

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011026729A1 *

Also Published As

Publication number Publication date
EP2289837A1 (fr) 2011-03-02
CN102639430A (zh) 2012-08-15
EP2473434B1 (fr) 2015-04-29
WO2011026729A1 (fr) 2011-03-10
US8656599B2 (en) 2014-02-25
US20120227272A1 (en) 2012-09-13
ES2543096T3 (es) 2015-08-14

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