EP0761542A1 - Méthode et dispositif d'introduction de couvercles de récipients dans une machine de scellage sous vide - Google Patents

Méthode et dispositif d'introduction de couvercles de récipients dans une machine de scellage sous vide Download PDF

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Publication number
EP0761542A1
EP0761542A1 EP96830458A EP96830458A EP0761542A1 EP 0761542 A1 EP0761542 A1 EP 0761542A1 EP 96830458 A EP96830458 A EP 96830458A EP 96830458 A EP96830458 A EP 96830458A EP 0761542 A1 EP0761542 A1 EP 0761542A1
Authority
EP
European Patent Office
Prior art keywords
lids
containers
star conveyor
seaming
vacuum chamber
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Withdrawn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
EP96830458A
Other languages
German (de)
English (en)
Inventor
Franco Dall'argine
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.)
Sasib Processing and Seaming Machinery SpA
Original Assignee
Sasib Food 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
Application filed by Sasib Food SpA filed Critical Sasib Food SpA
Publication of EP0761542A1 publication Critical patent/EP0761542A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a method and a device for feeding lids into a vacuum seaming machine.
  • IT 1,195,517 discloses a plant for the vacuum seaming of containers with products, of the type comprising a large receptacle which defines internally a sealed chamber kept under vacuum conditions and having arranged inside it a container seaming machine and a store for supplying the seaming machine where the containers, not yet closed, remain for a predetermined period of time.
  • the containers are introduced into the sealed chamber partially open, i.e. with the lids already pre-seamed, and are extracted from the sealed chamber after being completely closed by the seaming machine.
  • the plant comprises a star conveyor for introducing and removing the containers from the receptacle.
  • This star rotating about its vertical axis, passes precisely inside a through-slit formed in a wall of the receptacle, the cross-section of which is equal to the axial cross-section of the star and the depth of which is greater than the diameter of the compartments of the star, each of which is designed to house in its entirety a container.
  • IT 1,187,223 discloses a star conveyor for introducing and removing cylindrical containers into and from a vacuum receptacle inside which there is a seaming machine.
  • This star conveyor comprises a plurality of compartments for accommodating the containers and a plurality of ejection means travelling radially along each compartment from an internally retracted position into a position where they located at the external end of the compartment.
  • the ejection means are operated by cam means which ensure a perfect seal, avoiding the penetration of air from the outside.
  • the ejection means comprise a plurality of pins, spring-loaded and axially travelling inside respective bushes in turn radially travelling along slots associated with each of the container-receiving compartments, designed to engage resiliently with cam means via a plurality of rollers.
  • Italian Utility Model Application No. 32014 B/90 discloses an improved star conveyor in which the cam means comprise in combination a circular plate fixed to the frame of the vacuum seaming plant and provided with a single channel symmetrical with respect to the centre of the circular plate or with respect to the axis of the rotary shaft of the star conveyor.
  • This channel is formed so as to define a closed path around the centre of the circular plate, comprising sections which are situated further away from and closer to said centre.
  • the channel has travelling inside it a plurality of drive rollers, one for each container-receiving compartment, and a plurality of idle rollers comprised between consecutive drive rollers.
  • the object of the present invention is that of eliminating the aforementioned problems and in particular providing a method and a device able to feed lids into a container seaming machine without the need for a pre-seaming operation performed by a pre-seaming machine and resulting in a plant which is less complex and more economical.
  • a further object is that of feeding the lids at high speed (400-500 lids per minute). Said objects are fully achieved by the method and device which form the subject of the present invention and which are characterized by the contents of the claims indicated below.
  • the lids supplied by a separator device situated in the external environment at atmospheric pressure, are introduced by means of a special star conveyor into a high-vacuum environment (with a negative pressure or vacuum of about 70 cm Hg) where they are seamed onto the containers which are introduced into the seaming machine in a substantially known manner along a path different from that of the lids.
  • the star conveyor is of the type provided with a plurality of cells, one for each lid, and with a cam shaped in an asymmetrical manner with respect to the centre of the conveyor so as to allow the introduction of the lids from the external environment, the transfer of the lids into a zone of variable intermediate pressure and ejection of the lids into the high-vacuum zone.
  • 1 denotes in its entirety a vacuum seaming plant of the type intended to fit lids onto cylindrical containers (for example tin cans) filled with food products.
  • the plant comprises a chamber 2 with a high vacuum (negative pressure or vacuum of about 70 cm Hg) having arranged inside it a seaming machine 3 of the conventional type, only schematically shown in Figure 1.
  • the star conveyor 6 is of the type with a vertical axis of rotation and is provided with a plurality of cells 7 formed so as to receive individual lids 5.
  • Each cell 7 has associated with it a block 8 which moves radially inside a respective eyelet 23 and acts as a pushing device for ejecting the lids from the cells.
  • the blocks 8 are in fact provided at the bottom with rollers which travel inside a channel or cam 9 in the form of a closed circuit arranged asymmetrically around the axis of rotation of the star conveyor 6.
  • the lids are inserted into the cells, they are conveyed over a certain distance inside the star, and they are finally ejected towards a second star conveyor 10.
  • the lids 5 are separated at the ambient pressure and, when they are taken up by the star conveyor 6, they enter into an intermediate zone 11 of variable intermediate pressure (lower than that of the external environment and higher than that of the chamber 2) and are then ejected into the high-vacuum chamber 2.
  • the frame 12 completely surrounds the star conveyor 6 over a width less than the diameter of the conveyor so that a part of the latter projects towards the external environment and a part projects inside the chamber 2.
  • the transmission devices 14 comprise a shaft 15 which by means of a pinion 15a causes rotation of a first toothed wheel 16 which actuates a second toothed wheel 17 which, via conical couplings 18 and 19, causes rotation of the central shafts of the star conveyors 10 and 6, respectively.
  • 21 denotes schematically the line for introducing the containers into the chamber 2.
  • the containers are conveyed into the chamber via star conveyors.
  • the lids are conveyed exactly above the containers, but separated from the latter and only in the seaming machine zone are the lids fitted and seamed onto the containers.
  • the closed containers then leave the seaming machine and, by means of additional star-type containers, denoted overall by 22, leave the chamber 2.
  • a single star conveyor 24 performs both introduction of the open and lidless containers into the chamber 2 and removal of the seamed containers, in the same way as in IT, 1,195,517; the open containers enter on one side of the conveyor 24 and the closed containers leave on the opposite side.
  • the lids 5 are fed, without undergoing any deformation, from an environment at atmospheric pressure into a high-vacuum environment at high speeds (400-500 lids per minute).
  • the lids do not undergo any deformation since the pressure does not act on the main surface of the lid, but on the lateral surface thereof which extends over a negligible area and therefore the forces exerted are also negligible.
  • the result is a simplified plant which is able to perform closing of the containers efficiently and at high speed.
  • the open container instead of being pre-seamed as in the known art, has the advantage that it allows the air to escape more easily from the container itself, this being particularly useful in the case of dense products such as paté for example.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Jars (AREA)
  • Closing Of Containers (AREA)
EP96830458A 1995-09-11 1996-08-30 Méthode et dispositif d'introduction de couvercles de récipients dans une machine de scellage sous vide Withdrawn EP0761542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPR950027 1995-09-11
IT95PR000027A IT1280735B1 (it) 1995-09-11 1995-09-11 Procedimento e dispositivo per alimentare coperchi di contenitori, in macchina aggraffatrice sotto vuoto

Publications (1)

Publication Number Publication Date
EP0761542A1 true EP0761542A1 (fr) 1997-03-12

Family

ID=11395957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830458A Withdrawn EP0761542A1 (fr) 1995-09-11 1996-08-30 Méthode et dispositif d'introduction de couvercles de récipients dans une machine de scellage sous vide

Country Status (2)

Country Link
EP (1) EP0761542A1 (fr)
IT (1) IT1280735B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101657368B (zh) * 2007-04-20 2013-12-18 西德尔合作公司 具有传送引导构件的容器传送设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209315A (en) * 1938-05-26 1940-07-30 American Can Co Method of canning
US2296828A (en) * 1939-11-18 1942-09-29 American Can Co Method of canning
US2760702A (en) * 1953-07-28 1956-08-28 American Can Co Can transfer valve with pressurized seat
EP0228351A1 (fr) * 1985-12-19 1987-07-08 Manzini Comaco S.P.A. Roue convoyeuse à étoile pour le transfert de récipients cylindriques dans et hors d'un équipement à chambre sous pression avec laquelle les récipients sont scellés sous vide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209315A (en) * 1938-05-26 1940-07-30 American Can Co Method of canning
US2296828A (en) * 1939-11-18 1942-09-29 American Can Co Method of canning
US2760702A (en) * 1953-07-28 1956-08-28 American Can Co Can transfer valve with pressurized seat
EP0228351A1 (fr) * 1985-12-19 1987-07-08 Manzini Comaco S.P.A. Roue convoyeuse à étoile pour le transfert de récipients cylindriques dans et hors d'un équipement à chambre sous pression avec laquelle les récipients sont scellés sous vide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101657368B (zh) * 2007-04-20 2013-12-18 西德尔合作公司 具有传送引导构件的容器传送设备

Also Published As

Publication number Publication date
ITPR950027A0 (it) 1995-09-11
IT1280735B1 (it) 1998-02-06
ITPR950027A1 (it) 1997-03-11

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