EP0619168A1 - Device for forming a fracture slit in a pilferproof ring in screw caps made of plastics - Google Patents

Device for forming a fracture slit in a pilferproof ring in screw caps made of plastics Download PDF

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Publication number
EP0619168A1
EP0619168A1 EP94100776A EP94100776A EP0619168A1 EP 0619168 A1 EP0619168 A1 EP 0619168A1 EP 94100776 A EP94100776 A EP 94100776A EP 94100776 A EP94100776 A EP 94100776A EP 0619168 A1 EP0619168 A1 EP 0619168A1
Authority
EP
European Patent Office
Prior art keywords
blade
cap
ring
mandrel
abutment
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.)
Withdrawn
Application number
EP94100776A
Other languages
German (de)
English (en)
French (fr)
Inventor
Rodiero Alieri
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.)
Sacmi Imola SC
Original Assignee
Sacmi Imola SC
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 Sacmi Imola SC filed Critical Sacmi Imola SC
Publication of EP0619168A1 publication Critical patent/EP0619168A1/en
Withdrawn legal-status Critical Current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
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • 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
    • B26D7/01—Means for holding or positioning work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • B26F2210/04—Making plastic pilferproof screw caps by cutting a tamper ring

Definitions

  • the present invention relates to a device for forming a fracture slit in the pilferproof ring in screw caps made of plastics.
  • Screw caps made of plastics are commercially known for closing containers; they are composed of a cup that is internally threaded so that it can be screwed on a threaded portion of the neck of the bottle and is provided with a pilferproof ring separated from the cup by means of a series of peripheral slits divided by narrow bridges.
  • the pilferproof ring is internally provided with a plurality of mutually angularly equidistant teeth or elastic tabs.
  • the teeth extend inward so that they can engage below a collar formed on the outside of the neck of the bottle.
  • Metal screw caps which have a plurality of axial slits formed on the pilferproof ring; when the cap is unscrewed, these slits allow the ring to break into segments that remain attached to the edge of the cup.
  • the technical aim of the present invention is to provide a device that allows to form slits between the teeth of a screw cap made of plastics to fracture the pilferproof rings and remove them when the cap is unscrewed.
  • an object of the present invention is to provide a device which is structurally simple and can be easily adapted to closures of various shapes.
  • the invention provides a device for forming a fracture slit in the pilferproof ring of screw caps made of plastics having a cup and a pilferproof ring that is separated from the cup by a series of slits arranged along a circumference and mutually separated by mutually angularly equidistant bridges, a plurality of equidistant elements being formed inside said ring, said elements comprising retention means for engaging a collar of the container to fracture the bridges and separate the pilferproof ring from the cup during the unscrewing of the cap; there being also an abutment having a peripheral surface that forms an arc of a circle, and a blade which is concentric with respect to said abutment and protrudes from the peripheral surface of said abutment with its cutting edge, said cutting edge being provided with a plurality of notches the mutual distance whereof corresponds to the mutual distance of said bridges; said device being characterized in that it comprises: at least one chi
  • the reference numeral 1 designates a screw cap formed by molding a plastic material and composed of a cup 2 and a pilferproof ring 3.
  • the cup 2 has an internal thread 4 for screwing on the neck of a container and an external knurling 5 to improve grip.
  • a disk-like gasket 6 is arranged inside the cup to tightly seal the inlet or mouth of the container.
  • the pilferproof ring 3 is separated from the cup 2 by a plurality of through slits 7 lying along a circumference and separated from one another by bridges 8.
  • Means for retaining the cap on the container, constituted by teeth 9, are formed inside the ring 3.
  • These means can have various shapes and engage a collar of the container so that, when the cap 1 is unscrewed to open the container, the ring 3 remains attached to the container, whereas the cup 2 separates therefrom due to the fracture of the bridges 8 caused by the axial component of the unscrewing force.
  • the device according to the invention forms a slit 10 that axially passes through the ring 3 and allows to open it while the cap is being unscrewed.
  • the device furthermore places the slit between two adjacent retention means 9 so as to intersect one of the slits 7 while remaining attached to the cup 2 at one bridge.
  • the bridge 8a adjacent to the slit 10 is larger to ensure that separation occurs circumferentially except at said bridge 8a.
  • the device is shown in figures 2, 3 and 4 and comprises an abutment 11 formed by two plates 12 and 13 that are mutually superimposed and coupled by screw means 14 and have respective cylindrical front surfaces 15 and 16 (see figure 4).
  • a blade 18 is secured between the plates 12 and 13 with the interposition of laminas 17 and has a cutting edge 19 protruding from the front surfaces 15 and 16 by an extent equal to the thickness of the ring 3 and lying concentrically with respect to said surfaces 15 and 16.
  • Equidistant notches 20 are formed along the cutting edge 19 and, in a manner specified hereafter, form the bridges 8 while the blade produces the slits 7.
  • a seat is formed in the lower plate 13 to accommodate a chisel 21 that is at right angles to the blade 18 and has a cutting edge 21 a that coincides with the cutting edge 19 and is located adjacent to a notch 20.
  • the mandrels 22 are arranged on the outside of the abutment 11, support the caps to be slit and have an axis which is at right angles to the plane of the blade 18.
  • the mandrels 22 are rotated about their own axis in the direction A and are mounted on a carousel that rotates concentrically with respect to the front surfaces 15 and 16 so as to perform a circular movement in the direction B.
  • any conventional motor means may be employed for rotating the mandrels 22 and carousel.
  • the rotation rates of the carousel and of the mandrels are chosen so that a crown 23 keyed on each mandrel rolls on the surfaces 15 and 16 at zero relative speed with respect to them.
  • the crown 23 is rotationally coupled to the respective mandrel by means of a key 24 and is axially locked between a shoulder 25 of the mandrel and the top of a hollow shaft 26 in which the mandrel is screwed with a threaded portion 27.
  • the crown 23 has an edge or collar 28 that is coplanar to the blade 18 and is in tangent contact with the cutting edge 19. Indents 29 are formed below the collar and form teeth 30 that are angularly distributed and internal to the peripheral region of the collar 28.
  • the teeth 30 have a radial front 31 that is wider than the height by which the retention means 9 protrude from the internal surface of the ring 3 of the cap.
  • the mandrels 22 are external, i.e. spaced, with respect to the abutment 11, and the caps 1 are applied to their top, which conveniently forms a tang 32 (see figure 3) the height whereof is such that the cutting edge 19 is at the level between the cup 2 and the ring 3.
  • the angular distance of the teeth 30 from the chisel 21 at the point of tangency with the blade 18 is also constant, and therefore the slit 10 can always be produced between two retention means 9 so as to ensure that the ring 3 opens when the cap is unscrewed.
  • the number and angular distance of the teeth 30 of the mandrels 22 is chosen so that during the rolling of the cap 1 on the blade 18 the teeth 30 cooperate with the retention means 9 like the teeth of a gear that meshes with a second internally-toothed ring gear. In this manner it is always possible to rotate the cap regardless of the angular position that it randomly assumes when it is applied to the mandrel.
  • the chisel 21 has a recess 33 (see figure 2) to form a bridge, transversely to the axial slit 10, that gives greater solidity to the ring 3 prior to fracture.
  • Figure 5 illustrates a version suitable for caps made of plastics provided with internal recesses 34 distributed below the retention means 9.
  • the mandrel 22 has teeth 35 protruding radially from the peripheral region of the collar 28 of the crown 23 to engage in the recesses 34 and move the caps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP94100776A 1993-01-29 1994-01-20 Device for forming a fracture slit in a pilferproof ring in screw caps made of plastics Withdrawn EP0619168A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO930025 1993-01-29
IT93BO000025A IT1266234B1 (it) 1993-01-29 1993-01-29 Dispositivo per formare un'incisione di frattura nell'anello di ga- ranzia in tappi a vite realizzati in materiale plastico.

Publications (1)

Publication Number Publication Date
EP0619168A1 true EP0619168A1 (en) 1994-10-12

Family

ID=11338657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100776A Withdrawn EP0619168A1 (en) 1993-01-29 1994-01-20 Device for forming a fracture slit in a pilferproof ring in screw caps made of plastics

Country Status (5)

Country Link
EP (1) EP0619168A1 (it)
JP (1) JPH06247456A (it)
AU (1) AU5480594A (it)
CA (1) CA2113854A1 (it)
IT (1) IT1266234B1 (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0667216A1 (en) * 1994-01-14 1995-08-16 H-C Industries, Inc. Method and apparatus for manufacturing a tamper-indicating plastic closure
JPH0985683A (ja) * 1995-09-20 1997-03-31 Japan Crown Cork Co Ltd 合成樹脂製容器蓋に軸線方向破断ラインを形成する方法及び装置
FR2923172A1 (fr) * 2007-11-06 2009-05-08 Tetra Laval Holding Et Finance Procede et machine de fabrication d'un bouchon pour un col de recipient, ainsi que bouchon tel qu'obtenu par ce procede
WO2009060291A1 (en) * 2007-11-08 2009-05-14 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Cap, apparatus and method
EP3275623A1 (en) 2008-10-23 2018-01-31 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Manufacturing method
CN109866408A (zh) * 2019-03-18 2019-06-11 东莞市易驰自动化设备有限公司 瓶盖切环折边一体模组及瓶盖切环折边一体机
EP3943260A1 (de) 2020-07-22 2022-01-26 Contexo GmbH Vorrichtung und verfahren zum herstellen einer verschlusskappe
US11312544B2 (en) 2020-03-30 2022-04-26 ThisCap, Inc. Cap for container
WO2022125120A1 (en) * 2020-12-12 2022-06-16 ThisCap, Inc. Tool for manufacturing a cap for a container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800010118A1 (it) * 2018-11-07 2020-05-07 Sacmi Apparato e metodo di taglio

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824941A (en) * 1971-02-22 1974-07-23 C Hannon Apparatus for forming treaded closures
GB2003765A (en) * 1977-09-12 1979-03-21 Nat Can Corp Apparatus for forming tamper-proof closures
US4666053A (en) * 1986-01-31 1987-05-19 H-C Industries, Inc. Tamper-indicating plastic closure
WO1992013773A1 (de) * 1991-02-11 1992-08-20 Mhk Max Hübner Gmbh Flaschenkappe mit sicherungsring
DE9314485U1 (de) * 1992-09-24 1993-12-16 Crown Cork Ag Vorrichtung zum Herstellen eines Kunststoff-Behälterverschlusses und Behälterverschluß

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824941A (en) * 1971-02-22 1974-07-23 C Hannon Apparatus for forming treaded closures
GB2003765A (en) * 1977-09-12 1979-03-21 Nat Can Corp Apparatus for forming tamper-proof closures
US4666053A (en) * 1986-01-31 1987-05-19 H-C Industries, Inc. Tamper-indicating plastic closure
WO1992013773A1 (de) * 1991-02-11 1992-08-20 Mhk Max Hübner Gmbh Flaschenkappe mit sicherungsring
DE9314485U1 (de) * 1992-09-24 1993-12-16 Crown Cork Ag Vorrichtung zum Herstellen eines Kunststoff-Behälterverschlusses und Behälterverschluß

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0667216A1 (en) * 1994-01-14 1995-08-16 H-C Industries, Inc. Method and apparatus for manufacturing a tamper-indicating plastic closure
JPH0985683A (ja) * 1995-09-20 1997-03-31 Japan Crown Cork Co Ltd 合成樹脂製容器蓋に軸線方向破断ラインを形成する方法及び装置
US8490805B2 (en) 2007-11-06 2013-07-23 Tetra Laval Holdings & Finance S.A. Method and machine for making a stopper for the neck of a container, and stopper as produced by this method
FR2923172A1 (fr) * 2007-11-06 2009-05-08 Tetra Laval Holding Et Finance Procede et machine de fabrication d'un bouchon pour un col de recipient, ainsi que bouchon tel qu'obtenu par ce procede
WO2009068778A2 (fr) * 2007-11-06 2009-06-04 Tetra Laval Holdings & Finance S.A. Procédé et machine de fabrication d'un bouchon pour un col de récipient, ainsi que bouchon tel qu'obtenu par ce procédé
WO2009068778A3 (fr) * 2007-11-06 2009-07-30 Tetra Laval Holdings & Finance Procédé et machine de fabrication d'un bouchon pour un col de récipient, ainsi que bouchon tel qu'obtenu par ce procédé
WO2009060291A1 (en) * 2007-11-08 2009-05-14 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Cap, apparatus and method
EP3275623A1 (en) 2008-10-23 2018-01-31 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Manufacturing method
CN109866408A (zh) * 2019-03-18 2019-06-11 东莞市易驰自动化设备有限公司 瓶盖切环折边一体模组及瓶盖切环折边一体机
CN109866408B (zh) * 2019-03-18 2023-09-29 东莞市易驰自动化设备有限公司 瓶盖切环折边一体模组及瓶盖切环折边一体机
US11312544B2 (en) 2020-03-30 2022-04-26 ThisCap, Inc. Cap for container
EP3943260A1 (de) 2020-07-22 2022-01-26 Contexo GmbH Vorrichtung und verfahren zum herstellen einer verschlusskappe
DE102020119383A1 (de) 2020-07-22 2022-01-27 Contexo Gmbh Vorrichtung zum Herstellen einer Verschlusskappe
WO2022125120A1 (en) * 2020-12-12 2022-06-16 ThisCap, Inc. Tool for manufacturing a cap for a container

Also Published As

Publication number Publication date
IT1266234B1 (it) 1996-12-27
ITBO930025A0 (it) 1993-01-29
CA2113854A1 (en) 1994-07-30
JPH06247456A (ja) 1994-09-06
AU5480594A (en) 1994-08-04
ITBO930025A1 (it) 1994-07-29

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