EP0019646B1 - Appareil pour fermer des boîtes sous vide au moyen d'un couvercle - Google Patents

Appareil pour fermer des boîtes sous vide au moyen d'un couvercle Download PDF

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Publication number
EP0019646B1
EP0019646B1 EP79101660A EP79101660A EP0019646B1 EP 0019646 B1 EP0019646 B1 EP 0019646B1 EP 79101660 A EP79101660 A EP 79101660A EP 79101660 A EP79101660 A EP 79101660A EP 0019646 B1 EP0019646 B1 EP 0019646B1
Authority
EP
European Patent Office
Prior art keywords
bell
lifting
cover
sealing
adjusting piston
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
Application number
EP79101660A
Other languages
German (de)
English (en)
Other versions
EP0019646A1 (fr
Inventor
Hans-Jörg Lang
Ernst Schwerdtel
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.)
Ludwig Schwerdtel GmbH
Original Assignee
Ludwig Schwerdtel GmbH
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 Ludwig Schwerdtel GmbH filed Critical Ludwig Schwerdtel GmbH
Priority to EP79101660A priority Critical patent/EP0019646B1/fr
Priority to AT79101660T priority patent/ATE2608T1/de
Publication of EP0019646A1 publication Critical patent/EP0019646A1/fr
Application granted granted Critical
Publication of EP0019646B1 publication Critical patent/EP0019646B1/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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers

Definitions

  • the invention relates to a device for vacuum sealing cans with a lid, with a plate movable by means of a lifting device from below against a stationary, evacuable bell, for receiving a plate already provided with a loosely placed lid, a device for lifting the Lid of the can is provided.
  • Such a device is known from DE-A-2 636 003, in which a lifting device is provided, to which a lifting plate is attached.
  • This lifting plate is assigned a closure plate which can be displaced relative to it within limits and which can be sealed against the lower edge of the vacuum bell.
  • a device consisting of a plate with a permanent magnet for lifting the lid from the can is elastically displaceably mounted.
  • the lifting device conveys the lifting plate with the can until the cover adheres to the permanent magnet.
  • the lifting plate with the can is then slightly lowered again, but the vacuum bell remains tightly closed. This is followed by evacuation and, if necessary, partial gassing with protective gas. When this is complete, the lifting plate with the can is raised again until the lid rests on the can.
  • the can can then be pushed up further, at the same time pressing the edge of the lid.
  • the vacuum chamber in the vacuum bell is then ventilated again; the lifting plate with the closed box can be moved down again.
  • This device has proven itself extremely well as a semi-automatic device; on the one hand, it is not suitable for extremely high outputs and, on the other hand, it is not suitable for use with differently sized cans.
  • a device for closing cans each with a lid under vacuum, which has a vacuum space which can be moved vertically by means of two lifting devices relative to one another into a closed position and from one another into an open position of the vacuum space upper or lower vacuum bell is formed.
  • a third drive is provided, by means of which a pressure plate of a closing device can be actuated. The procedure is such that a lid provided with a lid is placed on a lower plate-like receptacle after lowering the lower vacuum bell and then the lower vacuum bell is moved up and the upper vacuum bell is lowered until the vacuum chamber is closed.
  • the pressure plate provided with a permanent magnet or the like is then moved against the cover and then moved back, the cover adhering to the pressure plate.
  • the vacuum chamber is then evacuated and the lid is then pressed onto the can using the pressure plate. Then the vacuum chamber is ventilated again and the two vacuum bells are moved downwards and upwards.
  • the invention is therefore based on the object of developing a device according to the preamble of patent claim 1 in such a way that cans of different sizes can also be sealed on it without the workflow of the device having to be changed.
  • the configuration according to the invention means that the individual work steps and the lifting heights of the lifting devices do not have to be changed if cans of different sizes, for example 2.5 kg cans and 1 kg cans, are to be sealed.
  • the measures according to claim 3 ensure that the closing station can be adapted to different cover diameters within predetermined tolerance limits. Such slight fluctuations in the lid diameter occur from lot to lot. However, the measures according to claim 3 ensure that even with such different lid diameters, a uniformly firm and secure closing of the can is achieved.
  • a completely uniform closing of the cans by precisely centering the lid and the can with one another is achieved by the measures according to claim 4.
  • the measures according to claim 5 already ensure that the lid when evacuating and possibly fumigating the cans and can are assigned to one another as precisely as possible.
  • the device shown in the drawing has a degassing station 1 and a closing station 2. These stations 1, 2 are mounted on identical frames 3, 4 arranged directly next to one another.
  • a conveyor track 5 is provided, which, viewed in the direction of conveyance 6, viewed from cans 7, begins in front of the degassing station 1, through it and through the downstream sealing station 2.
  • cans 7 are conveyed in cycles with conveyor devices (not shown in detail) and fed to the stations 1, 2.
  • Two degassing devices are arranged in the degassing station 1 shown in the drawing, and two closing devices are arranged in the closing station 2, so that two cans 7 can be degassed or closed at the same time.
  • the cans 7 to be used here are known, for example, from DE-OS 2 263 362.
  • each degassing device consists of a lifting device 9 and a degassing chamber 10.
  • Each lifting device 9 consists of a pneumatically actuated working cylinder 11 attached to the frame 3 below the conveyor track 5, to the upwardly projecting piston rod 12 of which a lifting plate 13 is attached. In the lower end position of the lifting plate 13 shown on the right in FIG. 1, it lies flush with the conveyor track 5, so that a can 7 can be pushed onto it without further ado.
  • the degassing chamber 10 lies coaxially with the lifting device 9 above it.
  • the bell 14 is closed at the top by a gas-tight, for example welded, annular cover plate 17, to which a bushing serving as an actuating cylinder 18 is screwed coaxially.
  • This actuating cylinder 18 is in turn attached to a bracket 19 of the frame 3.
  • an actuating piston 20 is slidably arranged coaxially with the degassing device. It carries at its lower end a concentrically arranged permanent magnet 21 and approximately flush with it a retaining ring 22.
  • the actuating piston 20 is closed by means of a cylinder end cover 23 screwed on and sealed from above, through which a return rod 24 extends, which extends with it lower end is screwed into the adjusting piston 20.
  • the return rod 24 penetrates a package of springs 25 resting on the top of the cylinder end cover 23, namely disc springs, on which a stop 26 designed as a downwardly open bushing rests, which is screwed onto the return rod 24 from above, thereby preloading the Springs 25 is adjustable.
  • a channel 27 for the supply or discharge of pressure medium opens into a working space 28 of the actuating cylinder 18, specifically between the cylinder end cover 23 and the actuating piston 20.
  • the bell 14 is connected to a connection 29 provided for evacuating and gassing the degassing chamber 10.
  • the inner wall of the bell 14 is provided with a centering surface 30 which tapers conically upwards.
  • a closing device has a pneumatically actuated lifting cylinder 31, which is attached to the frame 4 below the conveyor track 5 and on whose piston rod 32 which is led out upwards is attached a lifting plate 33 which is the same as the lifting plate 13.
  • a closing unit 35 is arranged coaxially with this lifting device 34 as part of the closing device.
  • the closing assembly 35 has a closing bell 36 which is open at the bottom and which has an upwardly tapering, frustoconical pressing surface 37.
  • the closing bell 36 which is closed at the top by a cover plate 38, is likewise attached to a bracket 40 of the frame 4 via a coaxially arranged bushing serving as an actuating cylinder 39.
  • An actuating piston 41 is arranged in the actuating cylinder 39, and a stop ring 42 is screwed onto its lower end. This stop ring 42 has a circumferential centering collar 43 in its lower outer region.
  • This actuating cylinder 39 is also closed at the top by a screwed-on cylinder end cover 44, through which a channel 45 for supplying or discharging a pressure medium, such as compressed air, into a working space 46 of the actuating cylinder 39 between the top of the actuating piston 41 and the underside of the cylinder end cover 44 is arranged.
  • a limiting rod 47 penetrating the working space 46 and the cylinder end cover 44 is screwed, which is provided at its outer end with a pot-shaped stop 48 which is adjustable in length on the limiting rod 47.
  • This stop 48 is assigned a stop sleeve 49 screwed into the cylinder cover 44 and penetrating it, which has a stop surface 50 adjacent to the stop 48.
  • the opposite boundary surface 51 is assigned to the actuating piston 41.
  • the upper end position of the actuating piston 41 is fixed by correspondingly screwing in or unscrewing the stop sleeve 49 into or out of the cylinder cover 44.
  • the lower end position of the actuating piston 41 is fixed by appropriately screwing the stop 48 onto the limiting rod 47.
  • a reducer 52 designed as a plate, can be screwed onto the underside of the holding ring 22 of the degassing chamber 10 to change over to cans 7 'of lesser height, and a permanent magnet 21' is concentrically attached to the underside thereof.
  • an approximately cylindrical ring-shaped reducing piece 53 can be introduced into the bell 14 for adaptation to cans 7 'with a smaller diameter, which reducer is releasably locked to the bell 14 by means of resilient ball closures 54.
  • This reducer 53 likewise has a centering surface 30 'which tapers conically upwards in its upper region adjacent to the underside of the reducer 52. It is also provided with degassing openings 55, which are connected to the connection 29 via an annular channel 56 screwed into the outer surface of the reducer 53.
  • a reducing ring 57 which extends this downward, as it were. Furthermore, a reducing closure bell 58 is screwed onto the underside of the cover plate 38, which also has a pressure surface 37 ′ that tapers conically upwards. The reducing ring 57 is also provided on its underside with a centering collar 43 '.
  • the actuating piston 20 with the retaining ring 21 and the permanent magnet 21 is in its lower position, which is caused by the contact of the pot-shaped stop 26 on the top of the cylinder end cover 23 is determined.
  • This position of the actuating piston 20 is achieved in that the working space 28 is pressurized with compressed air via the channel 27. Now the working space 28 is relieved, so that the actuating piston 20 is brought into its upper end position by appropriate relaxation of the springs 25.
  • the cover 8, which is held by the permanent magnet 21, lies against a centering edge 60 on the underside of the cover plate 17.
  • the lid 8 and the can 7 have already been aligned exactly in the middle of the centering surface 30 when entering the vacuum space 59.
  • the vacuum chamber 59 is now evacuated via the connection 29. Thereupon, a protective gas is again introduced into the vacuum space 59 via the connection 29, but only in such an amount that a vacuum in the vacuum space 59 relative to atmospheric pressure is still maintained.
  • the working space 28 is pressurized again, so that the actuating piston 20 with the cover 8 is moved down onto the can 7, namely by pressing a seal 61 located in the edge of the cover against the upper edge of the can 7.
  • the vacuum space 59 is complete aerated, whereby the lid 8 is now only pressed on due to the pressure differences between the pressure in the can and the atmospheric pressure.
  • the lifting plate 13 with the can which is now tightly closed due to the atmospheric pressure is moved downward.
  • the two cans 7, which are simultaneously closed in the two degassing devices in the manner described, are brought into the closing station 2 and placed on the two lifting plates 33 of the lifting devices 34.
  • the required travel for the lifting plate 33 in the closing station 2 is only very small; on the other hand, the forces to be applied by the lifting device 34 are relatively high.
  • the lifting cylinders 31 are also relatively wide and compact. This means that the working cylinders 11 on the one hand and the lifting cylinders 31 on the other hand can be pressurized with compressed air of the same pressure and, due to the different stroke paths, can each perform their strokes at the same time with a naturally different lifting speed.
  • the lid 8 is torn off from the permanent magnet 21, since the magnet 21 is not so strong on the one hand that To keep the weight of the filled can and on the other hand, due to the pressure difference, the lid 8 is already relatively tight on the can.
  • the R ed u ornamental piece 5 2 and the reducer 57 have a vertical extension which corresponds exactly to the difference between the height of a larger box 7 and a smaller box 7 ', so that the stroke travels of the lifting plate 13 and 33 even at a conversion of the device do not need to be changed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Vacuum Packaging (AREA)
  • Closing Of Containers (AREA)

Claims (5)

1. Installation pour la fermeture sous vide de boîtes (7, 7') avec un couvercle (8, 8'), comportant un plateau (13, 33) servant à recevoir une boîte (7, 7') déjà munie d'un couvercle (8, 8') placé librement dessus, et pouvant, au moyen d'un dispositif de levage, se déplacer de bas en haut contre une cloche fixe (14, 36) pouvant être mise sous vide, un dispositif étant prévu pour détacher le couvercle (8, 8') de la boite (7, 7'), caractérisée en ce que le dispositif pour détacher le couvercle (8, 8') de la boite (7, 7') comporte un piston de réglage (20) guidé dans un cylindre de réglage (18) et pouvant être soumis à l'action d'un agent sous pression, et en ce que des pièces de réduction (52, 53) adaptées à différentes grandeurs de boîtes peuvent être montées de façon amovible sur ce piston de réglage (20), d'une part, et contre la paroi intérieure de la cloche (14), d'autre part.
2. Installation selon la revendication 1, avec poste de dégazage (1) et poste de fermeture (2) disposés séparément, caractérisée en ce qu'il est prévu un plateau de levage (33) servant à recevoir une boîte (7, 7') avec couvercle (8, 8') et pouvant, au moyen d'un dispositif de levage (34), se déplacer de bas en haut contre une cloche de fermeture (36) fixe, en ce que la cloche de fermeture comporte une surface de pression (37) se rétrécissant vers le haut et un piston de réglage (20) guidé dans un cylindre de réglage (39), pouvant être soumis à l'action d'un agent sous pression et servant de contre-support et de coulisseau séparateur, et en ce que sont montées de façon amovible, sur la cloche de fermeture, une cloche de fermeture de réduction (58) avec une surface de pression (37') et, sur le piston de réglage, un anneau de réduction (57).
3. Installation selon la revendication 2, caractérisée en ce que: la longueur du trajet de déplacement du piston de réglage (41) dans la cloche de fermeture (36) peut être réglée.
4. Installation selon la revendication 2, caractérisée en ce que: un anneau de butée (42) est monté sur le piston de réglage (41) de la cloche de fermeture (36), et en ce que: un collet de centrage (43, 43') pour le couvercle (8, 8') est prévu sur l'anneau de butée et l'anneau de réduction (57).
5. Installation selon la revendication 1, caractérisée en ce que: une surface de centrage (30, 30') est prévue sur la paroi intérieure de la cloche (14) pouvant être mise sous vide et sur la pièce de réduction associée (53).
EP79101660A 1979-05-30 1979-05-30 Appareil pour fermer des boîtes sous vide au moyen d'un couvercle Expired EP0019646B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP79101660A EP0019646B1 (fr) 1979-05-30 1979-05-30 Appareil pour fermer des boîtes sous vide au moyen d'un couvercle
AT79101660T ATE2608T1 (de) 1979-05-30 1979-05-30 Vorrichtung zum vakuum-verschliessen von dosen mit einem deckel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79101660A EP0019646B1 (fr) 1979-05-30 1979-05-30 Appareil pour fermer des boîtes sous vide au moyen d'un couvercle

Publications (2)

Publication Number Publication Date
EP0019646A1 EP0019646A1 (fr) 1980-12-10
EP0019646B1 true EP0019646B1 (fr) 1983-02-23

Family

ID=8186125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101660A Expired EP0019646B1 (fr) 1979-05-30 1979-05-30 Appareil pour fermer des boîtes sous vide au moyen d'un couvercle

Country Status (2)

Country Link
EP (1) EP0019646B1 (fr)
AT (1) ATE2608T1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147890A1 (fr) * 1983-12-23 1985-07-10 Koninklijke Philips Electronics N.V. Dispositif pour traiter des objets dans un milieu contrôlé
EP0315237A1 (fr) * 1987-11-05 1989-05-10 Aktiebolaget PROFOR Procédé et dispositif d'application des plaques de bout pour emballages
EP0685396A1 (fr) 1994-06-03 1995-12-06 Ludwig Schwerdtel GmbH. Dispositif de transport pour le transport intermittent de récipients

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829106B1 (fr) * 2001-08-28 2004-10-01 Larroche Brigitte Procede et dispositif pour la fermeture sous vide d'un conteneur de denrees alimentaires
FR3038298B1 (fr) 2015-06-30 2019-10-11 Sodetech Procede et systeme de conditionnement sous vide profond d'un produit alimentaire sans liquide de couverture
CN105151379B (zh) * 2015-07-10 2017-03-29 瑞安市翔达机械有限公司 全自动pet塑料罐抽真空充氮气封罐机
IT201900017153A1 (it) * 2019-09-25 2021-03-25 Andrea Darecchio Metodo e apparato per la pastorizzazione o la sterilizzazione uht-st e il confezionamento asettico in atmosfera modificata map sterilizzata in imballaggi primari rigidi rispettosi della salute del consumatore e dell’ambiente, di prodotti alimentari solidi, oppure liquidi, polposi, pastosi o cremosi con o senza pezzi solidi, oppure ancora di bevande, cosmetici, farmaci e simili, a media o lunga conservazione a temperatura ambiente
WO2021059180A1 (fr) * 2019-09-24 2021-04-01 Andrea Darecchio Procédé et appareil de stérilisation uht-st et de remplissage aseptique, dans une atmosphère modifiée, d'aliments solides, de boissons, de produits cosmétiques ou de médicaments à l'intérieur d'un emballage primaire respectueux de la santé des consommateurs et de l'environnement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636003A1 (de) * 1976-08-11 1978-02-16 Schwerdtel Ludwig Gmbh Vorrichtung zum verschliessen von dosen mit jeweils einem deckel unter vakuum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016626B (de) * 1955-07-20 1957-09-26 Duro Papierverarbeitung Huxol Zudeckelmaschine
CH549503A (de) * 1972-09-20 1974-05-31 Alupak Ag Verfahren und vorrichtung zum luftdichten verschliessen eines abgefuellten behaelters.
DE2317517C3 (de) * 1973-04-07 1979-11-08 Blechwarenfabrik Gustav Gruss & Co, 4010 Hilden Vorrichtung zum Evakuieren, Begasen und Verschließen von Dosen mit Deckeln
JPS52112241A (en) * 1976-03-16 1977-09-20 Rockwell International Corp Magnetic bubble domain device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636003A1 (de) * 1976-08-11 1978-02-16 Schwerdtel Ludwig Gmbh Vorrichtung zum verschliessen von dosen mit jeweils einem deckel unter vakuum

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147890A1 (fr) * 1983-12-23 1985-07-10 Koninklijke Philips Electronics N.V. Dispositif pour traiter des objets dans un milieu contrôlé
EP0315237A1 (fr) * 1987-11-05 1989-05-10 Aktiebolaget PROFOR Procédé et dispositif d'application des plaques de bout pour emballages
AU614552B2 (en) * 1987-11-05 1991-09-05 Ab Profor A method and an arrangement for the application of an end plate to a packing container body
US5081820A (en) * 1987-11-05 1992-01-21 Aktiebolaget Profor Method and an arrangement for the application of an end plate to a packing container body
EP0685396A1 (fr) 1994-06-03 1995-12-06 Ludwig Schwerdtel GmbH. Dispositif de transport pour le transport intermittent de récipients

Also Published As

Publication number Publication date
ATE2608T1 (de) 1983-03-15
EP0019646A1 (fr) 1980-12-10

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