EP1172157A1 - Procédé et appareil pour la production de couvercles empilables et couvercles ainsi obtenus - Google Patents

Procédé et appareil pour la production de couvercles empilables et couvercles ainsi obtenus Download PDF

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Publication number
EP1172157A1
EP1172157A1 EP00830480A EP00830480A EP1172157A1 EP 1172157 A1 EP1172157 A1 EP 1172157A1 EP 00830480 A EP00830480 A EP 00830480A EP 00830480 A EP00830480 A EP 00830480A EP 1172157 A1 EP1172157 A1 EP 1172157A1
Authority
EP
European Patent Office
Prior art keywords
lid
frame
forming
shaft
apt
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
EP00830480A
Other languages
German (de)
English (en)
Other versions
EP1172157B1 (fr
Inventor
Gianfranco D'amato
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.)
Seda SpA
Original Assignee
Seda SpA
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
Priority to PT00830480T priority Critical patent/PT1172157E/pt
Priority to DE60027885T priority patent/DE60027885T2/de
Priority to ES00830480T priority patent/ES2262501T3/es
Priority to EP00830480A priority patent/EP1172157B1/fr
Priority to DK00830480T priority patent/DK1172157T3/da
Application filed by Seda SpA filed Critical Seda SpA
Priority to AT00830480T priority patent/ATE325669T1/de
Publication of EP1172157A1 publication Critical patent/EP1172157A1/fr
Application granted granted Critical
Publication of EP1172157B1 publication Critical patent/EP1172157B1/fr
Priority to CY20061100990T priority patent/CY1105096T1/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps

Definitions

  • the present invention relates to a process for the production of pile-up lids and to an apparatus carrying out such process.
  • a process is disclosed providing the steps of positioning an unfinished lid on a supporting element, the former being then pressure-formed by narrowing in the radial direction a plurality of sectors until these come into contact with the walls of the lid inserted therebetween.
  • an object of the present invention is to overcome the above-mentioned disadvantages providing a process for the production of both circular and substantially square-shaped pile-up lids.
  • Another object of the present invention is to provide a process for the production of pile-up lids providing a limited number of intermediate forming steps, and above all of high forming speed, thereby improving productivity.
  • a further object of the present invention is to provide an apparatus for the production of pile-up lids that be both of simple implementation and extremely effective.
  • the present invention provides a process for the production of pile-up lids made of an upper wall and a peripheral wall, the process being characterised in that it comprises the following steps:
  • the present invention provides an apparatus for the production of pile-up lids made of an upper wall and of a peripheral wall, the apparatus being characterised in that it comprises:
  • FIGS. 1 and 2 show a preferred embodiment of a pile-up lid formed with the process and the apparatus of the present invention.
  • a pile-up lid 1 has an upper wall 2, a peripheral wall 3 being connected thereto.
  • the peripheral wall 3 defines an upper lip 4 and a lower skirt 5 with respect to the upper wall 2.
  • the lip 4 has a smaller diameter with respect to the skirt 5.
  • a bead 6 is formed onto the skirt 5 of the peripheral wall 3 .
  • the lid 1 thus formed is characterised in that it can be piled up onto another lid identical thereto, and moreover it can be snap-engaged onto a respective complementary peripheral rim of a container by means of the bead 6.
  • figure 3 it schematically shows the operation of the apparatus according to the process of the present invention.
  • the apparatus comprises a fixed supporting structure 7, substantially consisting of a first fixed base 8 piece-formed to a fixed frame (not shown in the figures).
  • a second base 9 is mounted onto the first base 8, to support the unfinished lid 1. It has to be understood that the second base 9 is shaped so as to be complementary to the lid 1.
  • a second structure 10 (not in the figure and better illustrated hereinafter) movable along the vertical direction Y-Y is provided.
  • the second movable structure 10 comprises a shaft 11, which is resilient along the vertical direction and having at the bottom end thereof, a first knurling gear 12. During the downstroke of the shaft 11 the knurling gear 12 is apt to engage with the upper wall 2 of the lid 1.
  • the forming means Onto the outer peripheral portion of the lid 1 the forming means are provided.
  • a second knurling gear 13 which is movable in the horizontal direction with respect to the lid as well as revolving the vertical axis thereof, is provided.
  • the knurling gear 13 contacts the upper lip 4 of the lid 1, the former has a diameter suitable to carry out a deformation of the lip 4 by pressing the material of the lid 1 until yield, by squashing the lip 4 between the knurling gear 12 and the knurling gear 13. Therefore, the complete forming of the lip 4 is carried out by rolling the knurling gear 13 along the entire perimeter of the upper lip 4, performing a plastic deformation, e.g.
  • a third knurling gear 14 is provided.
  • the knurling gear 14 is both movable in the horizontal direction with respect to the lid 1 and revolving about its own vertical axis.
  • the knurling gear 14 has a smooth outer surface, an outward-protruding peripheral rib 15 being formed thereon.
  • the complete forming of the skirt 5 is carried out by rolling the knurling gear 14 along the entire perimeter of the skirt 5.
  • the base 9 has a peripheral groove 90 complementary to the rib 15 of the knurling gear 14 to form the lid 1.
  • a cam 100 and rack 101 system is provided.
  • the shaft is apt to slide within a guide 102.
  • the shaft 11 is resilient by means of a spring 103 (better illustrated hereinafter).
  • the supporting frame 16 revolves around the base 7 and with respect to the shaft 11, as well as in the radial direction thereof in order to allow the displacement of the knurling gears 13 and 14 therein.
  • a second frame 17 coaxially mounted onto the shaft 11 and also revolving about the latter, is provided (all better illustrated hereinafter).
  • a pulley 18 mounted coaxially to the shaft 11 and located between the two frames 16 and 17 is provided, said pulley 18 being connected to a motor (not in figure) by means of a belt 19.
  • the frame 17 is apt to engage to a cam 20, coaxially and integrally arranged onto the shaft 11 so as to allow the knurling gears 13 and 14 to follow the outline of the lip of the underlying lid 1 along the entire forming revolution thereof (better illustrated hereinafter).
  • the first frame 16 has a supporting structure 160 for the knurling gear 13 which (160) is apt to slide in the radial direction on guides 161 against the resistance of one or more springs (not in figure).
  • the knurling gear 14 is mounted on a supporting structure 162 apt to slide on guides 163 against the resistance of one or more springs (not in figure).
  • the first frame thus assembled is revolvingly mounted onto the resilient portion of the shaft 11 with a revolving support 164.
  • the frame 17 is coaxially mounted onto the non-resilient portion of the shaft 11 by means of a supporting element 170.
  • the frame 17 has a first and a second structure 171 and 172, respectively resilient in the radial direction against the resistance of a spring 173.
  • the first and the second structure 171 and 172 have at the top thereof two revolving supports 174 apt to mutually engage by rolling within a track 21 formed into the cam 20.
  • the shape of the track 21 is complementary to that of the lid to be formed.
  • each structure 171 and 172 a protruding portion having a cam follower 175 apt to engage by rolling within a respective cam track 176 formed on each supporting structure 160 and 162, respectively, is integrally formed.
  • the pulley 18 is connected to the frame 17, in order to drive the rotary motion thereto.
  • the lid to be formed is positioned onto the base 9. Then the shaft 11 is lowered until the knurling gear 12 contacts the surface of the upper wall 2 of the lid 1.
  • the shaft is further lowered against the resistance of the spring 103.
  • the further lowering of the shaft 11 causes the contact of the cam followers 175 with the respective tracks 176, thus inducing a narrowing in the radial direction of the knurling gears 13 and 14, until the latter contacts the outer surface of the peripheral wall 3 of the lid 1.
  • a further controlled lowering of the shaft 11 induces a reciprocal narrowing of the knurling gears 13 and 14 which is transformed into yield pressure or stress onto the surface of the lid, thus deforming the latter.
  • the belt 19 is operated, which drags the pulley 18, thus also revolving the frame 17 and the underlying frame 16.
  • the revolution of the frame 17 occurs following the outline of the cam track 21 that engages the supporting members 174 of the respective structures 171 and 172, thus also driving the motion to the underlying knurling gears 13 and 14 according to the outline of the track 21.
  • the knurling gears 13 and 14 progressively deform the lip and the skirt 4 and 5, respectively, of the lid 1.
  • the shaft can finally be lifted, progressively moving the knurling gears 13 and 14 away from the lid by means of the action of the springs located in the structures 160 and 162.
  • the lid thus formed can be removed from the base 9 in order to position a new lid 1 to be formed onto the base 9 and to start the apparatus 10 for a new forming cycle.
  • the process and the apparatus of the present invention is applicable to pile-up lids of shapes other than that depicted in figure, i.e. substantially squared shape, but also circular, elliptic ones or the like.
  • lids 1 to be formed and made of an upper lip 4 pre-formed from a plane element in an initial preforming step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Closing Of Containers (AREA)
  • Microscoopes, Condenser (AREA)
  • Stackable Containers (AREA)
  • Making Paper Articles (AREA)
  • Basic Packing Technique (AREA)
EP00830480A 2000-07-10 2000-07-10 Appareil pour la production de couvercles empilables Expired - Lifetime EP1172157B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE60027885T DE60027885T2 (de) 2000-07-10 2000-07-10 Vorrichtung zum Herstellen stapelbarer Deckel
ES00830480T ES2262501T3 (es) 2000-07-10 2000-07-10 Aparato para la produccion de tapas apilables.
EP00830480A EP1172157B1 (fr) 2000-07-10 2000-07-10 Appareil pour la production de couvercles empilables
DK00830480T DK1172157T3 (da) 2000-07-10 2000-07-10 Apparat til fremstilling af stabelbare låg
PT00830480T PT1172157E (pt) 2000-07-10 2000-07-10 Aparelho para a producao de tampas empilhaveis
AT00830480T ATE325669T1 (de) 2000-07-10 2000-07-10 Vorrichtung zum herstellen stapelbarer deckel
CY20061100990T CY1105096T1 (el) 2000-07-10 2006-07-18 Μια συσκευη για την παραγωγη στοιβαζομενων καπακιων

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00830480A EP1172157B1 (fr) 2000-07-10 2000-07-10 Appareil pour la production de couvercles empilables

Publications (2)

Publication Number Publication Date
EP1172157A1 true EP1172157A1 (fr) 2002-01-16
EP1172157B1 EP1172157B1 (fr) 2006-05-10

Family

ID=8175397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00830480A Expired - Lifetime EP1172157B1 (fr) 2000-07-10 2000-07-10 Appareil pour la production de couvercles empilables

Country Status (7)

Country Link
EP (1) EP1172157B1 (fr)
AT (1) ATE325669T1 (fr)
CY (1) CY1105096T1 (fr)
DE (1) DE60027885T2 (fr)
DK (1) DK1172157T3 (fr)
ES (1) ES2262501T3 (fr)
PT (1) PT1172157E (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348070A1 (fr) * 1988-06-23 1989-12-27 Cmb Foodcan Plc Procédé de freinage à rouleaux et appareil pour réaliser ce procédé
DE19614338A1 (de) * 1995-04-12 1996-10-17 Carnaudmetalbox Sa Presse zur inneren Falzung des Randes eines Metalldeckels
EP0823298A2 (fr) * 1996-08-09 1998-02-11 SEDA S.p.A. Procédé et appareil pour la production de couvercles empilés et couvercles ainsi obtenus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348070A1 (fr) * 1988-06-23 1989-12-27 Cmb Foodcan Plc Procédé de freinage à rouleaux et appareil pour réaliser ce procédé
DE19614338A1 (de) * 1995-04-12 1996-10-17 Carnaudmetalbox Sa Presse zur inneren Falzung des Randes eines Metalldeckels
EP0823298A2 (fr) * 1996-08-09 1998-02-11 SEDA S.p.A. Procédé et appareil pour la production de couvercles empilés et couvercles ainsi obtenus

Also Published As

Publication number Publication date
PT1172157E (pt) 2006-08-31
CY1105096T1 (el) 2010-03-03
DE60027885D1 (de) 2006-06-14
ES2262501T3 (es) 2006-12-01
EP1172157B1 (fr) 2006-05-10
ATE325669T1 (de) 2006-06-15
DE60027885T2 (de) 2006-11-30
DK1172157T3 (da) 2006-08-14

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