US3638522A - Cutting device with zigzag knife - Google Patents

Cutting device with zigzag knife Download PDF

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Publication number
US3638522A
US3638522A US33229A US3638522DA US3638522A US 3638522 A US3638522 A US 3638522A US 33229 A US33229 A US 33229A US 3638522D A US3638522D A US 3638522DA US 3638522 A US3638522 A US 3638522A
Authority
US
United States
Prior art keywords
sectors
knife
groove
zigzag
cutting device
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 - Lifetime
Application number
US33229A
Other languages
English (en)
Inventor
Hans-Ulrich Bolli
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.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
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 Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Application granted granted Critical
Publication of US3638522A publication Critical patent/US3638522A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/08—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting using rotary cutters
    • 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
    • B26D1/56—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 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—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 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—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 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1313—Cutting element simultaneously bonds [e.g., cut seaming]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4801—With undulant cutting edge [e.g., "pinking" tool]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4836—With radial overlap of the cutting members

Definitions

  • the invention relates to a cutting device with rotating zigzag knife, with two oppositely rotating roller sectors of which the one is fitted with the knife and the other has a groove, in which the knife enters upon the rotation of the sectors, whereby a web disposed between the sectors, and consisting of one or more layers of foil-shaped material, is successively cut in transverse direction.
  • Known cutting devices of this type have the disadvantage, that they do not cut correctly certain webs, whose material is very thin and elastic. Such a web is not taken along by the knife in the groove and leaves the same uncut.
  • the cutting device of the present invention prevents this disadvantage and distinguishes itself by the fact that the zigzag-shaped cutting edge of the knife is formed by the freelying edges of the end of teeth extending in transverse direction, said teeth being separated from one another by transverse grooves and having each a back, whose profile in transverse direction corresponds at least approximately to a cycloid, which upon rotation of the sectors moves closely along the rear outer edge of the mentioned groove.
  • FIG. 1 shows a diagrammatic section of a cutting device, whereby the zigzag knife is sectioned along the line [-1 of FIG. 2;
  • FIG. 2 is a plan view of the zigzag knife
  • FIG. 3 is a view of the knife in direction of the arrow III of FIG. 1.
  • the cutting device comprises two oppositely rotating roller sectors 1 and 2 between which a wrapping tube 3 made of thin sealable or weldable foil and known in the trade under the mark Cellophane is pressed flat.
  • the tube 3 contains already the articles 4 to be packed, for example, boxes or small stacks of tablets, in regularly mutual distances from each other and the tube 3 must now be cut between each two articles 4 and welded or fused together at the points of intersection.
  • a knife 6 is fixed in an elongated groove 5 of the sector 1, and the portion of the knife 6 projecting from the groove 5 upon rotation of the sectors 1 and 2 enters into an elongated groove 7 of the sector 2 and thereby effects a cutting of the tube 3.
  • the two sectors 1 and 2 which for example are made of bronze, are heated by not illustrated electric heating elements which are embedded in the same, to the necessary welding temperature.
  • the sectors 1 and 2 press the tube 3 tight between them, first the rear end of the leading piece of the tube containing an article 4 is welded together and then the front end of the following piece of the tube.
  • the zigzag-shaped cutting edge of the knife 6 is formed by the free-lying edges 9 of triangularly shaped end surfaces 10 of adjacently disposed teeth 1 1 extending in transverse direction, which are separated from one another by corresponding transverse grooves 12.
  • Each tooth 11 has a back 13 (FIGS. 1 and 2) lying in a transverse plane, whose profile corresponds at least approximately to a cycloid, which upon rotation of the sectors 1 and 2 moves along closely to the rear outer edge 14 of the groove 7.
  • the cycloids 13 are so developed that the edge 14 first lies on the rear outer edge 15 of the groove 5 and that then the sector 2 is permitted to roll along the sector I assumed to be stationary.
  • This construction of the knife has the result that if the pertaining piece of the tube 3 is grasped by the zigzag cutting edge, it will be held between the backs 13 of the teeth and the edge 14 and therefore cannot be drawn into the groove 7. Upon the further rotation of the sectors 1 and 2, or the knife 6, respectively, the latter must cut through the tube 3; which between the sectors 1 and 2 is formed by a web consisting of two layers of foilshaped material.
  • the described cutting device is also adapted to the cut of a web consisting of a single layer of foilshaped material, and that it is not at all necessary to perform a welding operation simultaneously with the cutting operation.
  • the expression sector is to be understood in the most general sense, that is, also a full sector could be used with an angle at the center of 360, although as a rule, solely roller sectors with a much smaller, particularly pointed angle at the center are employed.
  • the cutting operation can be still more improved by inserting into the groove 7 a profile piece, which enters between the individual backs of the knife 6.
  • Cutting device comprising two oppositely rotating roller sectors of which the one is fitted with a knife and the other is provided with a groove in which the knife enters upon rotation of the sectors, whereby a web consisting of at least one layer of foil-shaped material disposed between said sectors is successively cut in transverse direction, wherein the improvement comprises that said knife is provided with a zigzag-shaped cutting edge formed by the free-lying edges of the end faces of teeth extending in transverse direction, said teeth being separated from one another by transverse grooves and have each a back whose profile in transverse direction corresponds at least approximately to a cycloid, which moves upon rotation of the sectors closely along the rear outer edge of said groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US33229A 1969-05-06 1970-04-30 Cutting device with zigzag knife Expired - Lifetime US3638522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH692469A CH507786A (de) 1969-05-06 1969-05-06 Schneidvorrichtung mit rotierendem Zick-Zack-Messer

Publications (1)

Publication Number Publication Date
US3638522A true US3638522A (en) 1972-02-01

Family

ID=4317190

Family Applications (1)

Application Number Title Priority Date Filing Date
US33229A Expired - Lifetime US3638522A (en) 1969-05-06 1970-04-30 Cutting device with zigzag knife

Country Status (2)

Country Link
US (1) US3638522A (de)
CH (1) CH507786A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147583A (en) * 1977-03-11 1979-04-03 Sig Schweizerische Industrie-Gesellschaft Apparatus for sealing and cutting filled wrappers
US4202230A (en) * 1977-07-15 1980-05-13 Fuji Photo Film Co., Ltd. Rotary cutter
EP0255626A1 (de) * 1986-08-07 1988-02-10 Peters Maschinenfabrik GmbH Messerwellenpaar zum Schneiden von bahnartigem Material, insbesondere Wellpappe
US4960479A (en) * 1987-05-15 1990-10-02 Delta Kogyo Co., Ltd. Method for manufacturing an automobile sunvisor
US5548946A (en) * 1994-04-07 1996-08-27 Klockner Hansel Tevopharm B.V. Flowpacker and tool assembly therefor
US6196105B1 (en) * 1996-02-22 2001-03-06 Tetra Laval Food Hoyer A/S Cutting arrangement for cutting paper or sheet webs
CN103274093A (zh) * 2013-05-28 2013-09-04 江苏新美星包装机械股份有限公司 膜包机上的切膜装置
US20130341373A1 (en) * 2012-06-26 2013-12-26 Kitaru Innovations Inc. Tape dispenser with improved cutter assembly
US10471620B2 (en) * 2016-12-07 2019-11-12 The Procter & Gamble Company Knife having beam elements

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2142085T3 (es) * 1995-09-22 2000-04-01 Sig Pack Systems Ag Procedimiento de produccion de envases con cierre sellado y dispositivo de separacion utilizado para la realizacion de dicho procedimiento.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125939A (en) * 1937-01-18 1938-08-09 Walter W Macfarren Rotary shear knife
US2803100A (en) * 1956-05-07 1957-08-20 Swift & Co Packaging meats, vacuum
US3017795A (en) * 1957-06-06 1962-01-23 Falls Paper & Power Company Method and apparatus for forming individual wrapped pads from otherwise continuous batt strips
US3244049A (en) * 1964-06-17 1966-04-05 Bolton Emerson Adjustable-inclined bed knife
US3522689A (en) * 1967-08-21 1970-08-04 Econ O Line Mfg Co Seal forming machine for forming successive transverse-spaced seals between the plies of a plural-ply strip in a packaging or other apparatus
US3524301A (en) * 1968-01-22 1970-08-18 Doughboy Ind Inc Cutoff knife for packaging machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125939A (en) * 1937-01-18 1938-08-09 Walter W Macfarren Rotary shear knife
US2803100A (en) * 1956-05-07 1957-08-20 Swift & Co Packaging meats, vacuum
US3017795A (en) * 1957-06-06 1962-01-23 Falls Paper & Power Company Method and apparatus for forming individual wrapped pads from otherwise continuous batt strips
US3244049A (en) * 1964-06-17 1966-04-05 Bolton Emerson Adjustable-inclined bed knife
US3522689A (en) * 1967-08-21 1970-08-04 Econ O Line Mfg Co Seal forming machine for forming successive transverse-spaced seals between the plies of a plural-ply strip in a packaging or other apparatus
US3524301A (en) * 1968-01-22 1970-08-18 Doughboy Ind Inc Cutoff knife for packaging machine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147583A (en) * 1977-03-11 1979-04-03 Sig Schweizerische Industrie-Gesellschaft Apparatus for sealing and cutting filled wrappers
US4202230A (en) * 1977-07-15 1980-05-13 Fuji Photo Film Co., Ltd. Rotary cutter
EP0255626A1 (de) * 1986-08-07 1988-02-10 Peters Maschinenfabrik GmbH Messerwellenpaar zum Schneiden von bahnartigem Material, insbesondere Wellpappe
US4960479A (en) * 1987-05-15 1990-10-02 Delta Kogyo Co., Ltd. Method for manufacturing an automobile sunvisor
US5548946A (en) * 1994-04-07 1996-08-27 Klockner Hansel Tevopharm B.V. Flowpacker and tool assembly therefor
US6196105B1 (en) * 1996-02-22 2001-03-06 Tetra Laval Food Hoyer A/S Cutting arrangement for cutting paper or sheet webs
US9957129B2 (en) 2012-06-26 2018-05-01 Kitaru Innovations Inc. Tape dispenser with cutter assembly and protrusion
US20130341373A1 (en) * 2012-06-26 2013-12-26 Kitaru Innovations Inc. Tape dispenser with improved cutter assembly
US9199819B2 (en) * 2012-06-26 2015-12-01 Kitaru Innovations Inc. Tape dispenser with improved cutter assembly
US10017349B2 (en) 2012-06-26 2018-07-10 Kitaru Innovations Inc. Tape dispenser with cutter assembly and braking mechanism
CN103274093A (zh) * 2013-05-28 2013-09-04 江苏新美星包装机械股份有限公司 膜包机上的切膜装置
CN103274093B (zh) * 2013-05-28 2015-12-02 江苏新美星包装机械股份有限公司 膜包机上的切膜装置
US10471620B2 (en) * 2016-12-07 2019-11-12 The Procter & Gamble Company Knife having beam elements

Also Published As

Publication number Publication date
CH507786A (de) 1971-05-31

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