EP0061338A2 - Verschliessmaschine zum Anbringen von Verschlüssen auf Behältern - Google Patents

Verschliessmaschine zum Anbringen von Verschlüssen auf Behältern Download PDF

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Publication number
EP0061338A2
EP0061338A2 EP82301472A EP82301472A EP0061338A2 EP 0061338 A2 EP0061338 A2 EP 0061338A2 EP 82301472 A EP82301472 A EP 82301472A EP 82301472 A EP82301472 A EP 82301472A EP 0061338 A2 EP0061338 A2 EP 0061338A2
Authority
EP
European Patent Office
Prior art keywords
support member
container
lip
shoulder
support
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Withdrawn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
EP82301472A
Other languages
English (en)
French (fr)
Other versions
EP0061338A3 (de
Inventor
James Frederick Herbert
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.)
Arconic Closure Systems International UK Ltd
Original Assignee
Metal Closures Ltd
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 Metal Closures Ltd filed Critical Metal Closures Ltd
Publication of EP0061338A2 publication Critical patent/EP0061338A2/de
Publication of EP0061338A3 publication Critical patent/EP0061338A3/de
Withdrawn legal-status Critical Current

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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
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/02—Closing bottles, jars or similar containers by applying caps by applying flanged caps, e.g. crown caps, and securing by deformation of flanges
    • B67B3/10—Capping heads for securing caps
    • B67B3/18—Capping heads for securing caps characterised by being rotatable, e.g. for forming screw threads in situ

Definitions

  • the present invention relates to the application of closures to externally screw-threaded containers, such as screw-necked bottles, and in particular it relates to apparatus for applying closures to containers having crushable bodies, such as containers formed of plastics materials and to which a closure may be applied by placing an unthreaded metal closure blank over the mouth of the container and engaging such closure with the screw thread of the container in a thread-rolling operation.
  • Apparatus has been devised and widely used for applying unthreaded metal, usually aluminium, closure blanks to screw-threaded containers, in which the skirts of the closure blanks are brought into conformity with external thread on the container neck by a thread-rolling operation.
  • the closure blank is subjected to heavy downward pressure during the thread-rolling operation. Such pressure is required for the formation of a seal between the container and the gasket or sealing material within the closure blank to be maintained after completion of the thread-rolling operation.
  • a normal glass bottle or jar has sufficient rigidity to withstand the applied vertical or "head" pressure, but a plastic bottle, such as may be produced from polyvinylchloride by blow moulding, may collapse to a considerable extent as a result of the axial head pressure, although the externally screw-threaded neck has sufficient strength to resist the radial pressure of the thread rollers. Because of the method of production of blow-moulded bottles, the wall thickness of the large diameter body portion of the bottle is far less than the wall thickness in the neck, which is particularly reinforced by the thread formations.
  • a tamper-proof type metal closure When a tamper-proof type metal closure is applied to a bottle, the free edge of the security band at the bottom end of the closure skirt is tucked under an abutment shoulder on the neck immediately below the thread.
  • a separate support shoulder may be provided on the bottle neck for engagement by a support member on the sealing machine because the bottle cannot be supported on the abutment shoulder under which the security band is to be tucked by roller action.
  • a conventional sealing machine for applying a tamperproof closure to a container includes a head set which is rotatable about a vertical axis and which is vertically movable in relation to a support for the container, the head set including a pressure block, which applies vertical pressure to the closure and is free to rotate about the axis of the head set,and one or more thread forming rollers and one or more tuck-under rollers, said rollers being movable radially in relation to the axis of the head set from an outward retracted position to an inward operating position when the pressure block meets resistance to its downward movement.
  • a head set of this type is later referred'to herein as a head set of the type described.
  • the support shoulder is arranged close to the abutment shoulder for the security band to minimise the amount of material required for the production of the bottle.
  • a problem which has arisen when employing a support member shaped as shown in British Patent No. 1,244,653 is that under certain circumstances the tuck-under roller(s) may foul the support member.
  • these circumstances arise when the head set including the tuck-under roller(s), is set in operation above a support member which, perhaps due to an interruption of flow of bottles to the sealing machine, does not have a bottle supported therein. The head set will then "over-stroke", causing the tuck-under roller to be moved down so far as to foul the support member.
  • a sealing machine for the application of an unthreaded metallic tamper-proof closure blank to an externally screw-threaded container having an abutment shoulder for engagement by the security band of said closure and a separate support shoulder beneath said abutment shoulder and adapted to rest on a support member of said sealing machine during application of a blank to said container, said machine comprising at least one head set of the type described having an associated support member to receive said support shoulder characterised in that the support member has an upstanding lip for supporting the support shoulder of a container, said lip having an external diameter less than the diameter of the path of the innermost edge of the tuck-under roller(s) in the retracted position and said support member having an upper surface radially outwardly from said lip at a level lower than the level reached by the tuck-under roller(s) in the event of over run in the absence of a container from the support member.
  • the upper surface of the support member may be flat, but it is convenient if it slopes up slightly to the lip, from an outer portion by which the support member may be secured in the sealing machine.
  • the sealing machine will be a multi-head machine, with a support member arranged at each head set station.
  • FIG. 1 the bottle 1 is shown immediately prior to the commencement of the application of a tamper-proof closure.
  • thread is rolled into the skirt 2a of the blank and the security band 2b is tucked under the abutment shoulder by the roller 4.
  • the head set which carries thread rollers 3 and tuck-under rollers 4, has been lowered to cause its pressure block 5 to press the blank 2 down against the top of the bottle neck.
  • the pressure block 5 is spring- or fluid-loaded and is vertically movable in relation to the rotating head set spindle 5a. When the pressure block encounters sufficient resistance to downward movement, it moves upward in relation to the spindle 5a and this triggers the inward movement of the rollers 3 and 4.
  • the rollers 3 and 4 are still in their retracted position and their movement towards their operating position, in which they act on the closure blank 2 has not yet commenced.
  • the bottle 1 is supported in the machine by a support member 6.
  • the support member 6 and the head set rotate about a common axis in the conventional manner for a multi-head application machine.
  • the support member 6 is provided with an upstanding lip 8 which defines an essentially semi-circular recess to receive the neck of the bottle 1.
  • a support shoulder 9 on the neck of the bottle rests on the semi-circular lip 8 in support of the bottle.
  • the underside of the support member is preferably curved to conformity with the shape of the bottle to hold the bottle against tilting.
  • the lip 8 defines, in plan, a semi-circular recess 15 for accommodating the neck of the bottle. To provide for free entry and exit of bottles into the recess 15, it cannot have a circumferential extent of more than a semi-circle where the radius of curvature of the recess is such as to closely fit the necks of the bottles. However the lip 8 does have wings 16 which continue beyond the margins 17 of a semi-circle. The wings 16 are slightly diverging from each other. The wings 16 assist in stably supporting a bottle if the pressure head acts slightly eccentrically or if irregularities in the bottle should cause the neck to tilt under pressure from the pressure block.
  • the wings may be essentially parallel, instead of being slightly divergent as shown. In some instances the wings, whether parallel or divergent, may be curved in the same sense as each other. This is convenient where the bottle is transferred to a support member 6 carried by one star wheel from a recess in an adjacent star wheel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Jars (AREA)
  • Closing Of Containers (AREA)
  • Closures For Containers (AREA)
EP82301472A 1981-03-24 1982-03-22 Verschliessmaschine zum Anbringen von Verschlüssen auf Behältern Withdrawn EP0061338A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8109184 1981-03-24
GB8109184 1981-03-24

Publications (2)

Publication Number Publication Date
EP0061338A2 true EP0061338A2 (de) 1982-09-29
EP0061338A3 EP0061338A3 (de) 1983-01-26

Family

ID=10520609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82301472A Withdrawn EP0061338A3 (de) 1981-03-24 1982-03-22 Verschliessmaschine zum Anbringen von Verschlüssen auf Behältern

Country Status (6)

Country Link
EP (1) EP0061338A3 (de)
JP (1) JPS57175593A (de)
AU (1) AU544804B2 (de)
DE (1) DE61338T1 (de)
ES (1) ES264071Y (de)
ZA (1) ZA821861B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113460927A (zh) * 2021-08-04 2021-10-01 安徽钦同瓶业有限公司 一种玻璃油瓶瓶封合压纹装置及其实施方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE, no.131, March 1975, (GB); "Supporting a tin-walled container during capping", page 74 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113460927A (zh) * 2021-08-04 2021-10-01 安徽钦同瓶业有限公司 一种玻璃油瓶瓶封合压纹装置及其实施方法

Also Published As

Publication number Publication date
AU544804B2 (en) 1985-06-13
ZA821861B (en) 1983-03-30
JPS57175593A (en) 1982-10-28
ES264071Y (es) 1983-05-16
EP0061338A3 (de) 1983-01-26
ES264071U (es) 1982-11-16
AU8171382A (en) 1982-09-30
DE61338T1 (de) 1983-07-07

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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

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AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

PUAL Search report despatched

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Designated state(s): DE FR GB IT NL SE

DET De: translation of patent claims
17P Request for examination filed

Effective date: 19830211

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19851108

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HERBERT, JAMES FREDERICK