EP0091813A2 - Appareil de fermeture - Google Patents

Appareil de fermeture Download PDF

Info

Publication number
EP0091813A2
EP0091813A2 EP83302027A EP83302027A EP0091813A2 EP 0091813 A2 EP0091813 A2 EP 0091813A2 EP 83302027 A EP83302027 A EP 83302027A EP 83302027 A EP83302027 A EP 83302027A EP 0091813 A2 EP0091813 A2 EP 0091813A2
Authority
EP
European Patent Office
Prior art keywords
die
container
closure
cover
foil
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
EP83302027A
Other languages
German (de)
English (en)
Other versions
EP0091813A3 (en
EP0091813B1 (fr
Inventor
Rik Noten
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.)
Ekco NV
Original Assignee
Ekco NV
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 Ekco NV filed Critical Ekco NV
Priority to AT83302027T priority Critical patent/ATE25054T1/de
Publication of EP0091813A2 publication Critical patent/EP0091813A2/fr
Publication of EP0091813A3 publication Critical patent/EP0091813A3/en
Application granted granted Critical
Publication of EP0091813B1 publication Critical patent/EP0091813B1/fr
Expired 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/165—Securing by deformation of the web material

Definitions

  • the invention relates to apparatus for closing containers especially containers made of aluminium foil.
  • the cover is formed in the die from a sheet of aluminium or other foil material, during the closing operation.
  • a closure die including an upper die part, a lower die part having a support for a foil container and means responsive to relative movement between the die parts to secure a cover to the container, characterised thereby that the closure die further includes cutting means adapted to cut a cover for the container on relative movement between the die parts.
  • the upper die part is fixed and the lower die part is movable towards the upper die part.
  • the cutting means may comprise a movable knife and a fixed knife.
  • the movable knife is pivoted at one end and adapted to cut a cover by means of a scissor action.
  • the movable knife is releasably connected to the lower die part whereby when the lower die part moves upwards the movable knife moves with it until a predetermined point when the movable knife is disengaged.
  • the releasable connection may comprise spring-loaded detent means for engagement with a detent of the movable knife.
  • the arrangement includes stop means on the fixed knife which is adapted to prevent passing movement of the movable knife.
  • the detent means may be part of a tiltable support which is connected to the lower die part.
  • the upper part of the die preferably includes means for compressing the sides of the cover around the rim of the container.
  • Said compressing means may comprise a plurality of resilient frame members which are spaced apart when the die is open and means for compressing the resilient frame members together when the die closes whereby the edges of the cover can be secured under the rim of the container.
  • the resilient frame members may be made of nylon or other plastics material.
  • the upper part of the die may include rigid guides associated with the resilient frame members, said rigid guides being arranged to be moved inwards and thereby press the resilient frame members together.
  • This arrangement may include tapered guides, which are adapted to push the rigid guides inwards as the rigid guides and associated resilient frame members are moved relative to the lower part of the die.
  • the closure die includes guide means for the foil sheet, the guide means having slots into which the edges of the foil sheet fit; the slots being such that the foil sheet can be pushed out of the guides by relative movement of the upper and lower die parts and can be bent downwards as the edges leave the slots in the guide members.
  • the apparatus includes means for carrying a roll of foil sheet material and for feeding foil sheet from a roll into the slotted guides.
  • the lower die part may include an inner frame and an outer frame, the inner frame being adapted to support a container which is to be closed and the outer frame being adapted to complete sealing of a cover on the container by compressing a bent edge of the cover under the rim of the container.
  • the invention also includes a method of closing a foil container, which method comprises placing a foil container on the lower part of a closure die having upper and lower parts, feeding foil sheet material between the upper and lower parts of the die, cutting the foil sheet material to provide a cover for the container and closing the die to secure the cover to the container.
  • the foil sheet material is cut to size as the die closes.
  • the closing die comprises a movable cut off knife 1, which is movable in an upward direction; the knife having a pivot 19 at one end (see Figures 1 to 6 and 9) and a notch 27 at the other end (see best in Figure 3).
  • the notched end of the knife rests against a ball bearing 11, which is fixed to a tiltable support frame 10, which forms part of a lower die.
  • a resilient frame 4 (made of nylon), consisting of four individual sections normally biassed apart by compression springs 26,has four shaped rigid guides 5 (made of steel) along its short and long sides.
  • FIG. 1 there is a support plate 17 for the lower die which comprises an inner die frame 8 and an outer die frame 9.
  • An ejector plate 14 has guide pins 13.
  • the inner die frame 8 has loading springs 15.
  • the upper die comprises a frame 3, the nylon frame 4 (see also Figure 7) and its steel guides 5.
  • the nylon frame has cavities 20 for the compression springs 26 (see Figure 7).
  • the upper die frame 3 has support posts 21 fixed to a carrying plate 22.
  • the plate 22 has return springs 23.
  • the upper die also has guide pins 24 and a support plate 25.
  • the closing die operates in the following way.
  • Figure 1 shows the die in the open, or start position.
  • An aluminium foil container 7 is placed on the ejector plate 14. Aluminium foil sheet 6 is fed from a roll (not shown) through guides 18 into the "fed” position ( Figure 1) above the container 7 and under the upper die.
  • the support frame 17 is moved upward ( Figure 2) by rams 28 pushing the lower inner die frame 8 under the shoulder of the container 7 which is then lifted from the ejector plate 14.
  • the support frame 17 carries the ball bearing support frame 10 with it.
  • the ball bearing 11 rotates against and guides the movable cut off knife 1 upwards about its pivot 19 so cutting the foil sheet 6 against the fixed knife edge 2 by means of a scissor action thus forming the foil cover for the container.
  • the movable knife 1 meets a stopper pin 12 which causes the bearing 11 to leave the notch 27 of the knife 1 thus disconnecting the knife from the bearing 11 as seen in Figure 3.
  • the foil container 7 moves under and engages the foil cover 6. The continued upward movement of the container 7 pulls the cover 16 out of its guide 18. This results in the edges of the cover 6 being bent downwards, on its two short sides as shown in Figure 4.
  • the ball bearing 11 has left the notch 27 in knife 1 completely while the knife rests against stopper pin 12.
  • the foil container 7 with its cover 6 continues to move upwards supported and guided by the inner frame 8 of the lower die until it pushes against the frame 3 of the upper die and into the area of the nylon frame 4.
  • the nylon frame 4 is compressed by the tapered steel guides 5, thus moving inwards to bend the edge of the cover 6 under the shoulder of the container as shown in Figures 5 and 5a.
  • the outer frame 9 of the lower die moves up under the ledge against the effect of springs 15, tightening the cover 6 under the shoulder of container 7 as shown in Figures 6 and 6a.
  • the closed container may be removed from the die preferably by automatic means and a fresh container inserted for closure.
  • the combined thickness of the nylon frame 4 and the movable cut off knife 1 is equal to the width of foil sheet material 6 protruding beyond the rolled edge of the container. This width will depend on the size of container being sealed. For one particular size it amounted to 12 mm.
  • the apparatus described above has the advantage that the lid can be cut from a roll of foil and shaped during the closing operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP83302027A 1982-04-13 1983-04-12 Appareil de fermeture Expired EP0091813B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83302027T ATE25054T1 (de) 1982-04-13 1983-04-12 Verschliessapparat.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8210725 1982-04-13
GB8210725 1982-04-13

Publications (3)

Publication Number Publication Date
EP0091813A2 true EP0091813A2 (fr) 1983-10-19
EP0091813A3 EP0091813A3 (en) 1984-10-24
EP0091813B1 EP0091813B1 (fr) 1987-01-21

Family

ID=10529668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83302027A Expired EP0091813B1 (fr) 1982-04-13 1983-04-12 Appareil de fermeture

Country Status (3)

Country Link
EP (1) EP0091813B1 (fr)
AT (1) ATE25054T1 (fr)
DE (1) DE3369293D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648255C1 (de) * 1996-11-21 1998-03-26 Alcan Gmbh Schneidvorrichtung und Verschließgerät mit einer Schneidvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271708A (fr) * 1960-08-05 1961-09-15 Ekco Alcoa Containers Appareil de capsulage
FR1587382A (fr) * 1967-09-29 1970-03-20
FR2203739A1 (fr) * 1972-10-23 1974-05-17 Pfeiffer Ohler Eisen Theob
US3834120A (en) * 1972-12-06 1974-09-10 Harbor Island Machine Works In Food tray covering machine
FR2383835A1 (fr) * 1977-03-14 1978-10-13 Phenix Aluminium Sa Dispositif pour la fermeture de recipients a l'aide d'une feuille metallique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271708A (fr) * 1960-08-05 1961-09-15 Ekco Alcoa Containers Appareil de capsulage
FR1587382A (fr) * 1967-09-29 1970-03-20
FR2203739A1 (fr) * 1972-10-23 1974-05-17 Pfeiffer Ohler Eisen Theob
US3834120A (en) * 1972-12-06 1974-09-10 Harbor Island Machine Works In Food tray covering machine
FR2383835A1 (fr) * 1977-03-14 1978-10-13 Phenix Aluminium Sa Dispositif pour la fermeture de recipients a l'aide d'une feuille metallique

Also Published As

Publication number Publication date
DE3369293D1 (en) 1987-03-05
EP0091813A3 (en) 1984-10-24
ATE25054T1 (de) 1987-02-15
EP0091813B1 (fr) 1987-01-21

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