EP1768795B1 - Multiple station machine for cleaning a container by scouring with a compressed gas peripheral jet - Google Patents

Multiple station machine for cleaning a container by scouring with a compressed gas peripheral jet Download PDF

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Publication number
EP1768795B1
EP1768795B1 EP05764049A EP05764049A EP1768795B1 EP 1768795 B1 EP1768795 B1 EP 1768795B1 EP 05764049 A EP05764049 A EP 05764049A EP 05764049 A EP05764049 A EP 05764049A EP 1768795 B1 EP1768795 B1 EP 1768795B1
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EP
European Patent Office
Prior art keywords
duct
cleaning
machine
receptacle
peripheral
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.)
Not-in-force
Application number
EP05764049A
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German (de)
French (fr)
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EP1768795A1 (en
Inventor
Damien c/o SIDEL CIRETTE
Philippe c/o SIDEL FREIRE DIAZ
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Sidel Participations SAS
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Sidel Participations SAS
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Publication of EP1768795A1 publication Critical patent/EP1768795A1/en
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Publication of EP1768795B1 publication Critical patent/EP1768795B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/34—Arrangements of conduits or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/283—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking by gas jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/30—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking and having conveyors
    • B08B9/32—Rotating conveyors

Definitions

  • the present invention relates to a multi-station machine for cleaning a container by insufflation and a method of controlling the machine.
  • the present invention relates more particularly to a machine for cleaning the internal walls of a container such as a bottle of the type comprising several cleaning stations which are rotatably mounted about a main axis and which are distributed circumferentially about the axis. main.
  • This type of machine can be arranged in a plastic bottle processing plant such as polyethylene terephthalate (PET) for depositing an inner barrier coating by means of a microwave plasma.
  • PET polyethylene terephthalate
  • a precursor fluid is injected into the bottle and subjected to the action of microwaves so that it passes to the state of plasma and causes a deposit on the inner walls from the bottle.
  • a precursor fluid is injected into the bottle and subjected to the action of microwaves so that it passes to the state of plasma and causes a deposit on the inner walls from the bottle.
  • this type of machine can be arranged in any container treatment plant, whether plastic or not, which containers need to be rid of residues that they may contain inside: , without limitation, it may be facilities for cleaning reused containers or containers that have been stored between their manufacture and filling.
  • the opening of the bottle is connected to a suction device which recovers the unstuck residue by means of air blowing.
  • the document US 1940615 and more particularly the document EP-0381841 respectively illustrate embodiments of the cleaning nozzle of the inner walls of a container.
  • the present invention aims to improve this machine by improving its cleaning efficiency, so as to ensure a complete elimination and high rate of residues.
  • FIG. 1 there is shown a machine 10 for cleaning by blowing the internal walls of a container such as a bottle 12 made according to the teachings of the invention.
  • the machine 10 is provided in particular to be arranged in a bottle treatment plant 12, in order to extract residues which pollute the inside of the bottles 12.
  • the bottle treatment plant 12 is designed to provide a barrier coating (carbon or silica-based, for example)
  • the machine 10 is disposed immediately downstream of the processing unit for producing said coating. barrier so that the reaction residues are removed as quickly as possible.
  • the machine can still be arranged upstream of a filling installation.
  • the machine 10 comprises a plurality of cleaning stations 14 which are rotatably mounted about a vertical main axis A1 and which are distributed circumferentially about the main axis A1.
  • the main axis A1 could be inclined relative to the vertical direction.
  • Each cleaning station 14 is intended to be connected to a source 16 of gas under pressure, such as compressed air.
  • the source 16 of compressed air is common to all cleaning stations 14.
  • the machine 10 comprises a fixed base 18 on which a platform 20 is rotatably mounted about the main axis A1.
  • the platform 20 is rotated about its axis A1, for example by means of an electric motor (not shown).
  • Each cleaning station 14 comprises a frame 22 which is fixed on the upper transverse face 24 of the platform 20.
  • the machine 10 comprises a fixed beam 26 which extends transversely above the platform 20 and which supports a gas distributor 28, typically compressed air, connected to the source 16 .
  • the distributor 28 comprises a tubular central shaft 30 which is fixed on the beam 26 and which delimits a main pipe 31, axial, connected to the source 16, and a hub 32 connection which is rotatably mounted on the shaft 30 and which comprises radial channels 33, 35 likely to communicate with the main pipe 31.
  • the hub 32 has, at its lower axial end, a connecting disk 34 which is fixed on the frames 22 so that the hub 32 is rotatably connected to the cleaning stations 14.
  • Dispenser 28 will be described in more detail later.
  • Each cleaning station 14 is equipped with an insufflation tube 36 which extends along a substantially vertical axis A2, which is connected to the distributor 28, and which is provided, at its upper axial end, with a nozzle 38 generally. cylindrical tube for injecting compressed air towards the inner walls of the container 12.
  • the axis A2 could be inclined relative to the main axis A1 and / or relative to the vertical direction.
  • the insufflation tube 36 is fitted into a mobile connection box 40.
  • the mobile housing 40 is guided in vertical sliding by two uprights 42, 44 forming a vertical portion of the frame 22.
  • the mobile housing 40 is equipped with a carriage 46, such as a slide carriage which slides on a vertical rail 48 carried by one of the uprights 44.
  • a carriage 46 such as a slide carriage which slides on a vertical rail 48 carried by one of the uprights 44.
  • the mobile housing 40 is controlled in axial sliding by a mechanism 50 comprising a roller 52 which is carried by the housing 40 and which moves on a running track 54, or cam, associated during a cleaning cycle.
  • the running track 54 is fixed on the base 18. It comprises a section 56 of maximum altitude which determines a high axial position of the housing 40, therefore of the insufflation tube 36, and two ramps 58, 60 which control the rise of the insufflation tube 36 from its low axial position to its high axial position, and the descent of the insufflation tube 36 from its high axial position to its low axial position. .
  • the low position of insufflation tube 36 can be determined by axial stop means (not shown).
  • the cleaning cycle implemented by a station 14 for cleaning the machine 10, during a complete rotation of the platform 20, thus comprises a rising phase Pm corresponding to the rising stroke of the insufflation tube 36 from its low position to its high position, and a descent phase Pd corresponding to the downward stroke of the insufflation tube 36, from its high position to its low position.
  • the nozzle 38 enters the bottle 12.
  • the upper position of the insufflation tube 36 is shown in dashed line on the figures 1 and 3 , and the low position of the insufflation tube 36 is represented on the figure 2 .
  • the frame 22 is equipped with support means 62 which hold the bottle 12 generally vertically so that its opening 13 is arranged downwardly on the axis A2 of the insufflation tube 36 in a so-called cleaning position.
  • the support means 62 may comprise a pivoting clamp which is provided to grip the bottle 12 by its neck, the bottle 12 being positioned with its opening 13 upwards, as shown in FIG. figure 2 , then to tilt the bottle 12 about a transverse axis A3 so that it comes to occupy its cleaning position, as shown on the figures 1 , 3, and 4 .
  • the structure of the nozzle 38 is shown in detail on the Figures 3 and 4 , where the insufflation tube 36 is shown, in solid lines, in an intermediate axial position between its high position and its low position.
  • the nozzle 38 has a peripheral annular slot 64 which is capable of forming a peripheral jet f2 of compressed air of generally frustoconical shape directed towards the inner side walls 66 of the bottle 12 and downwards.
  • the peripheral jet f2 is materialized on the figure 4 by arrows.
  • the insufflation tube 36 comprises an outer tube 68 and a coaxial inner tube 70 which delimit between them a peripheral duct 72.
  • the peripheral duct 72 opens out through the annular slot 64 of the nozzle 38.
  • the inner tube 70 delimits a central duct 74 which opens out through a central orifice 76 located at the upper axial end of the nozzle 38.
  • the central orifice 76 which has a frustoconical profile, in axial section, is provided to produce a central jet f1 of compressed air directed towards the inner wall 75 of the bottom face of the bottle 12.
  • the central jet f1 is materialized on the figure 3 by arrows.
  • the nozzle 38 comprises a plug 78 which partially closes the upper axial end of the insufflation tube 36.
  • the plug 78 has a shape of revolution about the axis A2 and a profile, in axial section, generally T-shaped.
  • the plug 78 has a lower tubular section 80 which is provided, at its upper axial end, with a head 82 of outside diameter greater than the outside diameter of the tubular section 80 and substantially equal to the outside diameter of the upper end of the outer tube 68 .
  • the tubular section 80 is screwed into the upper end section of the inner tube 70.
  • the central orifice 76 is arranged in the upper transverse face 84 of the head 82.
  • the tubular section 80 defines an end duct 85 which connects the central duct 74 to the central orifice 76.
  • the lower annular surface 86 of the head 82 has a frustoconical shape flaring downwards.
  • the rim 88 of the upper end of the outer tube 68 has a frustoconical shape complementary to the lower annular surface 86 of the head 82, so that the axial space between the rim 88 and the lower annular surface 86 delimits an annular slot 64 the walls inclined relative to the axis A2 of the insufflation tube 36.
  • the rim 88 and the lower annular surface 86 of the head 82 thus guide the flow of compressed air to form a peripheral jet f2 of generally frustoconical shape.
  • peripheral duct 72 and the central duct 74 are connected independently to the distributor 28 by means of two corresponding flexible pipes 90, 92.
  • Each flexible pipe 90, 92 is connected, in the direction of the flow of compressed air, upstream to the connection hub 32 and downstream to the mobile housing 40.
  • the distributor 28 is designed to supply compressed air only to the central duct 74, during at least part of the rise phase Pm, and only the peripheral duct 72, during at least part of the descent phase Pd.
  • connection hub 32 comprises an upper connection series 94 constituted by a first series of radial channels 33 which are arranged in the same transverse plane and which are each connected to the peripheral duct 72 of a cleaning station 14 determined and a lower connection series 96 formed by a second series of radial channels 35 which are arranged generally in the same transverse plane and which are each connected to the central duct 74 of a specific cleaning station 14.
  • the upper series 94 connection is shown in cross section on the figure 7 and the lower series 96 of connection is shown in cross-section on the figure 6 .
  • Each radial channel 33, 35 has, at its outer end, an external orifice 98 which is connected to a flexible pipe 90, 92 associated and, at its inner end, an inner orifice 100 which opens opposite the axial wall of the pipe main 31 formed in the shaft 30.
  • the axial wall 102 of the main pipe 31 comprises, at the axial height of the upper series 94, an upper distribution window 104 which is provided to communicate a plurality of radial channels 33 of the upper series 94 with the main pipe 31, during a angular sector of the rotation cycle of the hub 32.
  • the axial wall 102 of the main pipe 31 comprises, at the axial height of the lower series 96, a lower distribution window 106 which is designed to communicate several radial channels 35 of the lower series 96 with the main pipe. 31, during an angular sector of the rotation cycle of the hub 32.
  • each distribution window 104, 106 extends over an angular sector of greater value than the angular difference between two consecutive external orifices 98 so as to simultaneously supply at least two radial channels 33, 35 belonging to the same series 94, 96, which makes it possible to carry out the cleaning simultaneously in at least two cleaning stations 14.
  • the radial channels 33, 35 are distributed circumferentially in a regular manner.
  • the source 16 sends compressed air into the distributor 28 and the platform 20 is rotated about its axis A1, in the clockwise direction R by considering the figure 1 .
  • the clamp belonging to the support means 62 is then pivotally controlled about its axis A3 until it comes to occupy the cleaning position.
  • the internal orifice 100 of the radial channel 35 associated with the central duct 74 of the insufflation tube 36 is facing the lower distribution window 106, whereas the internal orifice 100 of the radial channel 33 associated with the peripheral duct 72 is in With regard to the axial wall 102 of the shaft 30. Therefore, only the central orifice 76 is supplied with compressed air which flows along the arrow F1.
  • the central orifice 76 of the nozzle 38 thus produces a central jet f1 towards the inner wall 75 of bottom which tends to unhook the residues present in the bottle 12, in particular on the inner wall 75 of the bottom.
  • the cleaning station 14 may comprise suction means (not shown) connected to the opening 13 of the bottle 12 to suck the residues unhooked by the jet of compressed air.
  • the internal orifice 100 of the radial channel 33 associated with the peripheral duct 72 of the insufflation tube 36 comes opposite the upper distribution window 104, so that the peripheral duct 72 is fed with in compressed air.
  • the annular slot 64 then produces the peripheral jet f2 which tends to unhook the residues present on the inner walls of the bottle 12, in particular on the internal side walls 66.
  • the insufflation tube 36 reaches its upper position, determined by the arrival of the roller 52 on the section 56 of maximum altitude of the raceway 54, as shown in FIG. figure 1 .
  • the roller 52 then travels the ramp 58 descent which causes the sliding tube 36 for blowing down, that is to say, the descent phase Pd.
  • the internal orifice 100 of the radial channel 35 associated with the central duct 74 angularly exceeds the lower distribution window 106, so that the central duct 74 is no longer supplied with compressed air.
  • peripheral jet f2 of compressed air produced by the annular slot 64 namely its generally frustoconical shape, creates a significant depression in the upper part of the bottle 12, that is to say above the peripheral jet f2.
  • the internal orifice 100 of the radial channel 35 associated with the peripheral duct 72 angularly exceeds the upper distribution window 104, so that that the peripheral duct 72 is no longer supplied with compressed air.
  • the bottle 12, free of residues, can then be removed from the cleaning station 14.
  • the central duct 74 and the peripheral duct 72 are simultaneously supplied with compressed air in the vicinity of the upper position of the insufflation tube 36.
  • the windows 104, 106 of distribution, or the internal orifices 100 can be arranged so that the supply of the peripheral duct 72 begins after the end of the supply of the central duct 74.

Abstract

A machine for cleaning the inner walls (66, 75) of a receptacle (12), includes several cleaning stations of which one is fitted with an insufflation tube (36) that is connected to a source of pressurized gas and that is provided with a nozzle (38) insufflating the gas towards the inner walls (66, 75) of the receptacle (12) during a cleaning cycle including an ascending phase and a descending phase (Pd) of the insufflation tube (36), the nozzle (38) having an annular peripheral slot (64) that is capable of forming a peripheral jet (f2) of gas of generally frustoconical shape directed towards the inner side walls (66) of the receptacle (12) and towards the bottom, and the peripheral jet (f2) being triggered for at least a part of the descending phase (Pd).

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

La présente invention concerne une machine multipostes de nettoyage d'un récipient par insufflation et un procédé de commande de la machine.The present invention relates to a multi-station machine for cleaning a container by insufflation and a method of controlling the machine.

La présente invention concerne plus particulièrement une machine de nettoyage des parois internes d'un récipient tel qu'une bouteille du type comportant plusieurs postes de nettoyage qui sont montés à rotation autour d'un axe principal et qui sont répartis circonférentiellement autour de l'axe principal.The present invention relates more particularly to a machine for cleaning the internal walls of a container such as a bottle of the type comprising several cleaning stations which are rotatably mounted about a main axis and which are distributed circumferentially about the axis. main.

ETAT DE LA TECHNIQUESTATE OF THE ART

Ce type de machine peut être agencé dans une installation de traitement de bouteilles en matériau plastique tel que du polyéthylène téréphtalate (PET) visant à réaliser le dépôt d'un revêtement interne formant barrière au moyen d'un plasma micro-ondes.This type of machine can be arranged in a plastic bottle processing plant such as polyethylene terephthalate (PET) for depositing an inner barrier coating by means of a microwave plasma.

Au cours de l'étape de traitement de la bouteille, un fluide précurseur est injecté dans la bouteille et soumis à l'action de micro-ondes de sorte qu'il passe à l'état de plasma et provoque un dépôt sur les parois internes de la bouteille. Il est par exemple connu de réaliser des dépôts à base de carbone amorphe hydrogéné qui constitue un revêtement interne formant barrière, notamment à l'encontre des molécules de dioxygène et de dioxyde de carbone, en utilisant de l'acétylène en tant que précurseur ; il est encore connu de réaliser des dépôts à base de silice, en utilisant un composé organo-silicé en tant que précurseur.During the treatment step of the bottle, a precursor fluid is injected into the bottle and subjected to the action of microwaves so that it passes to the state of plasma and causes a deposit on the inner walls from the bottle. It is known, for example, to produce deposits based on hydrogenated amorphous carbon which constitutes an internal barrier coating, in particular against the oxygen and carbon dioxide molecules, by using acetylene as a precursor; it is still known to produce silica-based deposits, using an organo-siliceous compound as a precursor.

Après l'étape de traitement, il est nécessaire de nettoyer l'intérieur de la bouteille en vue d'en retirer les résidus de réaction qui se sont déposés sur ses parois internes mais qui ne font pas partie du revêtement interne.After the treatment step, it is necessary to clean the inside of the bottle in order to remove the residues from it. reaction which are deposited on its internal walls but which are not part of the internal coating.

Plus généralement, ce type de machine peut être agencé dans toute installation de traitement de récipients, qu'ils soient en matériau plastique ou pas, lesquels récipients nécessitent d'être débarrassés de résidus qu'ils sont susceptibles de contenir à l'intérieur : ainsi, sans que ce soit limitatif, il peut s'agir d'installations de nettoyage de récipients réutilisés ou de récipients qui ont été stockés entre leur fabrication et leur remplissage.More generally, this type of machine can be arranged in any container treatment plant, whether plastic or not, which containers need to be rid of residues that they may contain inside: , without limitation, it may be facilities for cleaning reused containers or containers that have been stored between their manufacture and filling.

Les machines actuelles réalisent le nettoyage des parois internes de la bouteille en insufflant de l'air, par l'intermédiaire de la buse, suivant un jet dirigé axialement vers la paroi de fond de la bouteille.Current machines perform the cleaning of the inner walls of the bottle by blowing air through the nozzle, in a jet directed axially towards the bottom wall of the bottle.

De plus, l'ouverture de la bouteille est raccordée à un dispositif d'aspiration qui récupère les résidus décollés au moyen de l'insufflation d'air.In addition, the opening of the bottle is connected to a suction device which recovers the unstuck residue by means of air blowing.

Le document US-1,940,615 et plus particulièrement le document EP-0.381.841 illustrent respectivement des exemples de réalisation de buse de nettoyage des parois internes d'un récipient.The document US 1940615 and more particularly the document EP-0381841 respectively illustrate embodiments of the cleaning nozzle of the inner walls of a container.

Le document EP-0.636.427 décrit une machine de nettoyage de récipient selon le préambule de la revendication 1.The document EP-0636427 discloses a container cleaning machine according to the preamble of claim 1.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention vise à perfectionner cette machine en améliorant son efficacité de nettoyage, de manière à assurer une élimination complète et à cadence élevée des résidus.The present invention aims to improve this machine by improving its cleaning efficiency, so as to ensure a complete elimination and high rate of residues.

Dans ce but, l'invention propose une machine de nettoyage des parois internes d'un récipient tel qu'une bouteille du type comportant plusieurs postes de nettoyage qui sont montés à rotation autour d'un axe principal et qui sont répartis circonférentiellement autour de l'axe principal, chaque poste de nettoyage est équipé d'un tube d'insufflation qui s'étend suivant un axe sensiblement vertical, qui est raccordé à une source de gaz sous pression, et qui est pourvu, à son extrémité axiale supérieure, d'une buse globalement cylindrique prévue pour insuffler le gaz vers les parois internes du récipient, et chaque poste est du type comportant des moyens de support qui maintiennent le récipient globalement verticalement de manière que l'ouverture du récipient soit agencée vers le bas sur l'axe du tube d'insufflation, du type dans laquelle le tube d'insufflation est commandé en coulissement suivant son axe, au cours d'un cycle de nettoyage, entre une première position axiale haute, dans laquelle la buse s'étend à l'intérieur du récipient, et une deuxième position axiale basse, le cycle de nettoyage comportant une phase de montée correspondant à la course montante du tube d'insufflation, depuis sa position basse jusqu'à sa position haute, et une phase de descente correspondant à la course descendante du tube d'insufflation, depuis sa position haute jusqu'à sa position basse, caractérisée en ce que la buse comporte une fente annulaire périphérique qui est apte à former un jet périphérique de gaz sous pression de forme globalement tronconique dirigé vers les parois internes latérales du récipient et vers le bas, lorsque la buse s'étend à l'intérieur du récipient, et en ce que le jet périphérique qui est déclenché pendant au moins une partie de la phase de descente à l'intérieur du récipient, en ce que la source de gaz sous pression est commune à plusieurs postes de nettoyage, en ce que la machine est équipée d'un distributeur de gaz comportant :

  • une conduite principale fixe qui est coaxiale à l'axe principal, qui est raccordée à la source de gaz sous pression et qui comporte, dans sa paroi axiale au moins une fenêtre de distribution,
  • un moyeu de raccordement qui est monté à rotation autour de la conduite principale, qui est lié en rotation aux postes de nettoyage, et qui comporte une série de canaux radiaux,
et en ce que chaque canal radial comporte, à son extrémité externe, un orifice externe qui est raccordé au tube d'insufflation d'un poste de nettoyage associé et, à son extrémité interne, un orifice interne qui débouche en regard de la fenêtre de distribution pendant un secteur angulaire du cycle de rotation du moyeu, de manière à provoquer l'alimentation du tube d'insufflation associé pendant une période adéquate du cycle de nettoyage, selon la revendication 1For this purpose, the invention proposes a machine for cleaning the internal walls of a container such as a bottle of the type comprising a plurality of cleaning stations which are rotatably mounted about a main axis and which are distributed circumferentially around the main axis, each cleaning station is equipped with an insufflation tube which extends along a substantially vertical axis which is connected to a source of gas under pressure and which is provided at its upper axial end with a generally cylindrical nozzle provided for blowing the gas towards the inner walls of the container, and each station is of the type comprising means of support which hold the container generally vertically so that the opening of the container is arranged downwardly on the axis of the insufflation tube, of the type in which the insufflation tube is slidably controlled along its axis, during of a cleaning cycle, between a first high axial position, in which the nozzle extends inside the container, and a second low axial position, the cycle cleaning device comprising a rising phase corresponding to the rising stroke of the insufflation tube, from its low position to its upper position, and a descent phase corresponding to the downward stroke of the insufflation tube, from its high position up to in its low position, characterized in that the nozzle comprises a peripheral annular slot which is capable of forming a peripheral jet of pressurized gas of generally frustoconical shape directed towards the lateral internal walls of the container and downwards, when the nozzle extends inside the container, and in that the peripheral jet which is triggered during at least part of the descent phase inside the container, in that the pressurized gas source is common to several stations cleaning device, in that the machine is equipped with a gas distributor comprising:
  • a fixed main pipe which is coaxial with the main axis, which is connected to the source of gas under pressure and which comprises, in its axial wall, at least one distribution window,
  • a connection hub which is rotatably mounted around the main pipe, which is rotatably connected to the cleaning stations, and which has a series of radial channels,
and in that each radial channel has, at its outer end, an external orifice which is connected to the insufflation tube of an associated cleaning station and, at its internal end, an internal orifice which opens out facing the window of dispensing during an angular sector of the rotation cycle of the hub, so as to cause feeding of the associated insufflation tube during an adequate period of the cleaning cycle, according to claim 1

Selon d'autres caractéristiques de l'invention :

  • le tube d'insufflation comporte un conduit périphérique qui débouche à l'extérieur par la fente annulaire et un conduit central qui débouche à l'extérieur par un orifice central situé à l'extrémité axiale libre de la buse, et en ce que l'orifice central est apte à produire un jet central de gaz sous pression dirigé vers la paroi interne de fond en vis-à-vis du récipient, lorsque la buse s'étend à l'intérieur du récipient ;
  • la machine comporte un distributeur de gaz qui alimente uniquement le conduit central pendant au moins une partie de la phase de montée et qui alimente uniquement le conduit périphérique pendant au moins une partie de la phase de descente ;
  • le moyeu de raccordement comporte une première série supérieure de canaux radiaux qui sont raccordés aux conduits centraux respectifs des tubes d'insufflation associés et une deuxième série inférieure de canaux radiaux qui sont raccordés aux conduits périphériques respectifs des tubes d'insufflation associés, et la conduite principale comporte une première fenêtre supérieure de distribution qui est associée à la première série supérieure et une deuxième fenêtre inférieure de distribution qui est associée à la série inférieure ;
  • en considérant un tube d'insufflation déterminé, pendant la phase de montée, l'orifice interne du canal radial associé au conduit central vient en regard de ladite deuxième fenêtre inférieure de distribution, l'orifice interne du canal radial associé au conduit périphérique se trouvant en regard de la paroi axiale de la conduite principale, et, pendant la phase de descente, l'orifice interne du canal radial associé au conduit périphérique vient en regard de ladite première fenêtre supérieure de distribution, l'orifice interne du canal radial associé au conduit central se trouvant en regard de la paroi axiale de la conduite principale, de manière que seul le conduit central soit alimenté en gaz pendant l'essentiel de la phase de montée, et de manière que seul le conduit périphérique soit alimenté en gaz pendant l'essentiel de la phase de descente ;
  • en considérant un tube d'insufflation déterminé, au voisinage de ladite première position haute du tube d'insufflation, les orifices internes des deux canaux radiaux associés viennent en regard des fenêtres de distribution correspondantes de manière que le conduit central et le conduit périphérique soient alimentés en gaz simultanément pendant un laps de temps déterminé ;
  • chaque fenêtre de distribution s'étend sur un secteur angulaire de valeur supérieure à l'écart angulaire entre deux orifices internes consécutifs de la même série de canaux radiaux de manière à alimenter simultanément au moins deux canaux radiaux de la même série ;
  • le gaz est constitué par de l'air comprimé.
According to other features of the invention:
  • the insufflation tube comprises a peripheral duct which opens outwards through the annular slot and a central duct which opens outwards through a central orifice located at the free axial end of the nozzle, and in that the central orifice is adapted to produce a central jet of pressurized gas directed towards the inner bottom wall vis-à-vis the container, when the nozzle extends inside the container;
  • the machine comprises a gas distributor which supplies only the central duct during at least a portion of the rising phase and which supplies only the peripheral duct during at least part of the descent phase;
  • the connection hub comprises a first upper series of radial channels which are connected to the respective central ducts of the associated insufflation tubes and a second lower series of radial channels which are connected to the respective peripheral ducts of the associated insufflation tubes, and the duct main comprises a first upper distribution window which is associated with the first upper series and a second lower distribution window which is associated with the lower series;
  • by considering a determined insufflation tube, during the rising phase, the internal orifice of the radial channel associated with the central duct comes opposite said second lower distribution window, the internal orifice of the radial channel associated with the peripheral duct lying opposite the axial wall of the main duct, and during the descent phase, the internal orifice of the radial channel associated with the peripheral duct comes opposite said first upper distribution window, the internal orifice of the radial duct associated with the central duct facing the axial wall of the main duct, so that only the central duct is supplied with gas during most of the rise phase, and so that only the peripheral duct is supplied with gas during the essential of the descent phase;
  • by considering a determined insufflation tube, in the vicinity of said first upper position of the insufflation tube, the internal orifices of the two associated radial channels come opposite the corresponding distribution windows so that the central duct and the peripheral duct are supplied with in gas simultaneously for a specified period of time;
  • each distribution window extends over an angular sector of greater value than the angular difference between two consecutive internal orifices of the same series of radial channels so as to simultaneously supply at least two radial channels of the same series;
  • the gas consists of compressed air.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective qui représente schématiquement une machine de nettoyage équipée d'un poste de nettoyage conforme aux enseignements de l'invention ;
  • la figure 2 est une vue de côté qui représente schématiquement le poste de nettoyage de la figure 1 équipé d'un tube d'insufflation en position basse ;
  • la figure 3 est une vue en coupe axiale qui représente le tronçon d'extrémité supérieure du tube d'insufflation au cours d'une phase de montée du cycle de nettoyage ;
  • la figure 4 est une vue similaire à celle de la figure 3 qui représente le tronçon d'extrémité supérieure du tube d'insufflation au cours d'une phase de descente du cycle de nettoyage ;
  • la figure 5 est une vue suivant le plan de coupe axiale 5-5 qui représente schématiquement le distributeur d'air comprimé équipant la machine de la figure 1 ;
  • la figure 6 est une vue suivant le plan de coupe transversale 6-6 qui représente la série inférieure de distribution d'air du distributeur de la figure 5 ;
  • la figure 7 est une vue similaire à celle de la figure 6 suivant le plan de coupe transversale 7-7 qui représente la série supérieure de distribution d'air du distributeur de la figure 5.
Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
  • the figure 1 is a perspective view which schematically shows a cleaning machine equipped with a cleaning station according to the teachings of the invention;
  • the figure 2 is a side view that schematically represents the cleaning station of the figure 1 equipped with an insufflation tube in the low position;
  • the figure 3 is an axial sectional view showing the upper end portion of the insufflation tube during a rising phase of the cleaning cycle;
  • the figure 4 is a view similar to that of the figure 3 which represents the upper end section of the insufflation tube during a descent phase of the cleaning cycle;
  • the figure 5 is a view along the axial sectional plane 5-5 which schematically represents the compressed air distributor equipping the machine of the figure 1 ;
  • the figure 6 is a view along the cross-sectional plane 6-6 which represents the lower series of air distribution of the distributor of the figure 5 ;
  • the figure 7 is a view similar to that of the figure 6 according to the cross-sectional plan 7-7 which represents the upper series of air distribution of the distributor of the figure 5 .

DESCRIPTION DETAILLEE DES FIGURESDETAILED DESCRIPTION OF THE FIGURES

Dans la description qui va suivre, des éléments identiques, similaires ou analogues seront désignés par les mêmes chiffres de référence.In the following description, identical, similar or similar elements will be designated by the same reference numerals.

Sur la figure 1, on a représenté une machine 10 de nettoyage par insufflation des parois internes d'un récipient tel qu'une bouteille 12 réalisée conformément aux enseignements de l'invention.On the figure 1 , there is shown a machine 10 for cleaning by blowing the internal walls of a container such as a bottle 12 made according to the teachings of the invention.

La machine 10 est prévue notamment pour être agencée dans une installation de traitement de bouteilles 12, en vue d'en extraire des résidus qui polluent l'intérieur des bouteilles 12. De préférence, lorsque l'installation de traitement de bouteilles 12 est conçue pour réaliser un revêtement barrière (à base de carbone ou de silice, par exemple), la machine 10 est disposée immédiatement en aval de l'unité de traitement permettant de réaliser ledit revêtement barrière afin que les résidus de réaction soient éliminés au plus vite. La machine peut encore être agencée en amont d'une installation de remplissage.The machine 10 is provided in particular to be arranged in a bottle treatment plant 12, in order to extract residues which pollute the inside of the bottles 12. Preferably, when the bottle treatment plant 12 is designed to provide a barrier coating (carbon or silica-based, for example), the machine 10 is disposed immediately downstream of the processing unit for producing said coating. barrier so that the reaction residues are removed as quickly as possible. The machine can still be arranged upstream of a filling installation.

La machine 10 comporte plusieurs postes 14 de nettoyage qui sont montés à rotation autour d'un axe principal A1 vertical et qui sont répartis circonférentiellement autour de l'axe principal A1.The machine 10 comprises a plurality of cleaning stations 14 which are rotatably mounted about a vertical main axis A1 and which are distributed circumferentially about the main axis A1.

Selon une variante de réalisation (non représentée), l'axe principal A1 pourrait être incliné par rapport à la direction verticale.According to an alternative embodiment (not shown), the main axis A1 could be inclined relative to the vertical direction.

Pour simplifier la représentation, un seul poste 14 de nettoyage est représenté sur la figure 1.To simplify the representation, only one cleaning station 14 is represented on the figure 1 .

Chaque poste 14 de nettoyage est prévu pour être raccordé à une source 16 de gaz sous pression, tel que de l'air comprimé. La source 16 d'air comprimé est commune à tous les postes 14 de nettoyage.Each cleaning station 14 is intended to be connected to a source 16 of gas under pressure, such as compressed air. The source 16 of compressed air is common to all cleaning stations 14.

La machine 10 comporte un socle 18 fixe sur lequel une plate-forme 20 est montée à rotation autour de l'axe principal A1.The machine 10 comprises a fixed base 18 on which a platform 20 is rotatably mounted about the main axis A1.

La plate-forme 20 est entraînée en rotation autour de son axe A1, par exemple au moyen d'un moteur électrique (non représenté).The platform 20 is rotated about its axis A1, for example by means of an electric motor (not shown).

Chaque poste 14 de nettoyage comporte un châssis 22 qui est fixé sur la face transversale supérieure 24 de la plate-forme 20.Each cleaning station 14 comprises a frame 22 which is fixed on the upper transverse face 24 of the platform 20.

Selon le mode de réalisation représenté, la machine 10 comporte une poutre 26 fixe qui s'étend transversalement au-dessus de la plate-forme 20 et qui supporte un distributeur 28 de gaz, typiquement de l'air comprimé, raccordé à la source 16.According to the embodiment shown, the machine 10 comprises a fixed beam 26 which extends transversely above the platform 20 and which supports a gas distributor 28, typically compressed air, connected to the source 16 .

Le distributeur 28 comporte un arbre 30 central tubulaire qui est fixé sur la poutre 26 et qui délimite une conduite principale 31, axiale, raccordée à la source 16, et un moyeu 32 de raccordement qui est monté à rotation sur l'arbre 30 et qui comporte des canaux radiaux 33, 35 susceptibles de communiquer avec la conduite principale 31.The distributor 28 comprises a tubular central shaft 30 which is fixed on the beam 26 and which delimits a main pipe 31, axial, connected to the source 16, and a hub 32 connection which is rotatably mounted on the shaft 30 and which comprises radial channels 33, 35 likely to communicate with the main pipe 31.

Le moyeu 32 comporte, à son extrémité axiale inférieure, un disque 34 de liaison qui est fixé sur les châssis 22 de manière que le moyeu 32 soit lié en rotation avec les postes 14 de nettoyage.The hub 32 has, at its lower axial end, a connecting disk 34 which is fixed on the frames 22 so that the hub 32 is rotatably connected to the cleaning stations 14.

Le distributeur 28 sera décrit de manière plus détaillée par la suite.Dispenser 28 will be described in more detail later.

Chaque poste 14 de nettoyage est équipé d'un tube 36 d'insufflation qui s'étend suivant un axe A2 sensiblement vertical, qui est raccordé au distributeur 28, et qui est pourvu, à son extrémité axiale supérieure, d'une buse 38 globalement cylindrique prévue pour insuffler l'air comprimé vers les parois internes du récipient 12.Each cleaning station 14 is equipped with an insufflation tube 36 which extends along a substantially vertical axis A2, which is connected to the distributor 28, and which is provided, at its upper axial end, with a nozzle 38 generally. cylindrical tube for injecting compressed air towards the inner walls of the container 12.

Selon une variante de réalisation (non représentée), l'axe A2 pourrait être incliné par rapport à l'axe principal A1 et/ou par rapport à la direction verticale.According to an alternative embodiment (not shown), the axis A2 could be inclined relative to the main axis A1 and / or relative to the vertical direction.

Le tube 36 d'insufflation est emmanché dans un boîtier 40 mobile de raccordement.The insufflation tube 36 is fitted into a mobile connection box 40.

Le boîtier 40 mobile est guidé en coulissement vertical par deux montants 42, 44 verticaux formant une portion du châssis 22.The mobile housing 40 is guided in vertical sliding by two uprights 42, 44 forming a vertical portion of the frame 22.

Selon le mode de réalisation représenté, le boîtier 40 mobile est équipé d'un chariot 46, tel un chariot à billes qui coulisse sur un rail 48 vertical porté par l'un des montants 44.According to the embodiment shown, the mobile housing 40 is equipped with a carriage 46, such as a slide carriage which slides on a vertical rail 48 carried by one of the uprights 44.

Le boîtier 40 mobile est commandé en coulissement axial par un mécanisme 50 comprenant un galet 52 qui est porté par le boîtier 40 et qui se déplace sur une piste de roulement 54, ou came, associée au cours d'un cycle de nettoyage.The mobile housing 40 is controlled in axial sliding by a mechanism 50 comprising a roller 52 which is carried by the housing 40 and which moves on a running track 54, or cam, associated during a cleaning cycle.

La piste de roulement 54 est fixée sur le socle 18. Elle comporte un tronçon 56 d'altitude maximale qui détermine une position axiale haute du boîtier 40, donc du tube 36 d'insufflation, et deux rampes 58, 60 qui commandent la montée du tube 36 d'insufflation depuis sa position axiale basse jusqu'à sa position axiale haute, et la descente du tube 36 d'insufflation depuis sa position axiale haute jusqu'à sa position axiale basse.The running track 54 is fixed on the base 18. It comprises a section 56 of maximum altitude which determines a high axial position of the housing 40, therefore of the insufflation tube 36, and two ramps 58, 60 which control the rise of the insufflation tube 36 from its low axial position to its high axial position, and the descent of the insufflation tube 36 from its high axial position to its low axial position. .

La position basse du tube 36 d'insufflation peut être déterminée par un moyen de butée axiale (non représenté).The low position of insufflation tube 36 can be determined by axial stop means (not shown).

Le cycle de nettoyage mis en oeuvre par un poste 14 de nettoyage de la machine 10, au cours d'une rotation complète de la plate-forme 20, comporte ainsi une phase de montée Pm correspondant à la course montante du tube 36 d'insufflation, depuis sa position basse jusqu'à sa position haute, et une phase de descente Pd correspondant à la course descendante du tube 36 d'insufflation, depuis sa position haute jusqu'à sa position basse.The cleaning cycle implemented by a station 14 for cleaning the machine 10, during a complete rotation of the platform 20, thus comprises a rising phase Pm corresponding to the rising stroke of the insufflation tube 36 from its low position to its high position, and a descent phase Pd corresponding to the downward stroke of the insufflation tube 36, from its high position to its low position.

Au cours de la phase de montée Pm, la buse 38 pénètre dans la bouteille 12.During the rise phase Pm, the nozzle 38 enters the bottle 12.

La position haute du tube 36 d'insufflation est représentée en trait pointillé sur les figures 1 et 3, et la position basse du tube 36 d'insufflation est représentée sur la figure 2.The upper position of the insufflation tube 36 is shown in dashed line on the figures 1 and 3 , and the low position of the insufflation tube 36 is represented on the figure 2 .

Le châssis 22 est équipé de moyens de support 62 qui maintiennent la bouteille 12 globalement verticalement de manière que son ouverture 13 soit agencée vers le bas sur l'axe A2 du tube 36 d'insufflation dans une position dite de nettoyage.The frame 22 is equipped with support means 62 which hold the bottle 12 generally vertically so that its opening 13 is arranged downwardly on the axis A2 of the insufflation tube 36 in a so-called cleaning position.

Comme illustré, les moyens de support 62 peuvent comprendre une pince pivotante qui est prévue pour saisir la bouteille 12 par son col, la bouteille 12 étant positionnée avec son ouverture 13 vers le haut, tel que représenté sur la figure 2, puis pour faire basculer la bouteille 12 autour d'un axe A3 transversal de sorte qu'elle vienne occuper sa position de nettoyage, telle que représentée sur les figures 1, 3, et 4.As illustrated, the support means 62 may comprise a pivoting clamp which is provided to grip the bottle 12 by its neck, the bottle 12 being positioned with its opening 13 upwards, as shown in FIG. figure 2 , then to tilt the bottle 12 about a transverse axis A3 so that it comes to occupy its cleaning position, as shown on the figures 1 , 3, and 4 .

La structure de la buse 38 est représentée de manière détaillée sur les figures 3 et 4, où le tube 36 d'insufflation est représenté, en trait fort, dans une position axiale intermédiaire entre sa position haute et sa position basse.The structure of the nozzle 38 is shown in detail on the Figures 3 and 4 , where the insufflation tube 36 is shown, in solid lines, in an intermediate axial position between its high position and its low position.

La buse 38 comporte une fente annulaire 64 périphérique qui est apte à former un jet périphérique f2 d'air comprimé de forme globalement tronconique dirigé vers les parois internes 66 latérales de la bouteille 12 et vers le bas.The nozzle 38 has a peripheral annular slot 64 which is capable of forming a peripheral jet f2 of compressed air of generally frustoconical shape directed towards the inner side walls 66 of the bottle 12 and downwards.

Le jet périphérique f2 est matérialisé sur la figure 4 par des flèches.The peripheral jet f2 is materialized on the figure 4 by arrows.

Avantageusement, le tube 36 d'insufflation comporte un tube externe 68 et un tube interne 70 coaxiaux qui délimitent entre eux un conduit périphérique 72.Advantageously, the insufflation tube 36 comprises an outer tube 68 and a coaxial inner tube 70 which delimit between them a peripheral duct 72.

Le conduit périphérique 72 débouche à l'extérieur par la fente annulaire 64 de la buse 38.The peripheral duct 72 opens out through the annular slot 64 of the nozzle 38.

Le tube interne 70 délimite un conduit central 74 qui débouche à l'extérieur par un orifice central 76 situé à l'extrémité axiale supérieure de la buse 38.The inner tube 70 delimits a central duct 74 which opens out through a central orifice 76 located at the upper axial end of the nozzle 38.

L'orifice central 76, qui a un profil tronconique, en section axiale, est prévu pour produire un jet central f1 d'air comprimé dirigé vers la paroi interne 75 de fond en vis-à-vis de la bouteille 12.The central orifice 76, which has a frustoconical profile, in axial section, is provided to produce a central jet f1 of compressed air directed towards the inner wall 75 of the bottom face of the bottle 12.

Le jet central f1 est matérialisé sur la figure 3 par des flèches.The central jet f1 is materialized on the figure 3 by arrows.

Selon le mode de réalisation représenté, la buse 38 comporte un bouchon 78 qui obture partiellement l'extrémité axiale supérieure du tube 36 d'insufflation.According to the embodiment shown, the nozzle 38 comprises a plug 78 which partially closes the upper axial end of the insufflation tube 36.

Le bouchon 78 a une forme de révolution autour de l'axe A2 et un profil, en coupe axiale, globalement en forme de T.The plug 78 has a shape of revolution about the axis A2 and a profile, in axial section, generally T-shaped.

Le bouchon 78 comporte un tronçon tubulaire 80 inférieur qui est pourvu, à son extrémité axiale supérieure, d'une tête 82 de diamètre externe supérieur au diamètre externe du tronçon tubulaire 80 et sensiblement égal au diamètre externe de l'extrémité supérieure du tube externe 68.The plug 78 has a lower tubular section 80 which is provided, at its upper axial end, with a head 82 of outside diameter greater than the outside diameter of the tubular section 80 and substantially equal to the outside diameter of the upper end of the outer tube 68 .

Le tronçon tubulaire 80 est vissé dans le tronçon d'extrémité supérieure du tube interne 70.The tubular section 80 is screwed into the upper end section of the inner tube 70.

L'orifice central 76 est aménagé dans la face transversale supérieure 84 de la tête 82.The central orifice 76 is arranged in the upper transverse face 84 of the head 82.

Le tronçon tubulaire 80 délimite un conduit 85 d'extrémité qui raccorde le conduit central 74 à l'orifice central 76.The tubular section 80 defines an end duct 85 which connects the central duct 74 to the central orifice 76.

La surface annulaire inférieure 86 de la tête 82 a une forme tronconique s'évasant vers le bas.The lower annular surface 86 of the head 82 has a frustoconical shape flaring downwards.

Le rebord 88 de l'extrémité supérieure du tube externe 68 a une forme tronconique complémentaire de la surface annulaire inférieure 86 de la tête 82, de manière que l'espace axial entre le rebord 88 et la surface annulaire inférieure 86 délimitent une fente annulaire 64 aux parois inclinées par rapport à l'axe A2 du tube 36 d'insufflation.The rim 88 of the upper end of the outer tube 68 has a frustoconical shape complementary to the lower annular surface 86 of the head 82, so that the axial space between the rim 88 and the lower annular surface 86 delimits an annular slot 64 the walls inclined relative to the axis A2 of the insufflation tube 36.

Le rebord 88 et la surface annulaire inférieure 86 de la tête 82 permettent ainsi de guider le flux d'air comprimé pour former un jet périphérique f2 de forme globalement tronconique.The rim 88 and the lower annular surface 86 of the head 82 thus guide the flow of compressed air to form a peripheral jet f2 of generally frustoconical shape.

Avantageusement, le conduit périphérique 72 et le conduit central 74 sont raccordés indépendamment au distributeur 28 par l'intermédiaire de deux conduites flexibles 90, 92 correspondantes.Advantageously, the peripheral duct 72 and the central duct 74 are connected independently to the distributor 28 by means of two corresponding flexible pipes 90, 92.

Chaque conduite flexible 90, 92 est connectée, suivant le sens du flux d'air comprimé, en amont au moyeu 32 de raccordement et en aval au boîtier 40 mobile.Each flexible pipe 90, 92 is connected, in the direction of the flow of compressed air, upstream to the connection hub 32 and downstream to the mobile housing 40.

Selon une caractéristique avantageuse de la machine, le distributeur 28 est prévu pour alimenter en air comprimé uniquement le conduit central 74, pendant au moins une partie de la phase de montée Pm, et uniquement le conduit périphérique 72, pendant au moins une partie de la phase de descente Pd.According to an advantageous characteristic of the machine, the distributor 28 is designed to supply compressed air only to the central duct 74, during at least part of the rise phase Pm, and only the peripheral duct 72, during at least part of the descent phase Pd.

A cet effet, le moyeu 32 de raccordement comporte une série supérieure 94 de raccordement constituée par une première série de canaux radiaux 33 qui sont agencés dans un même plan transversal et qui sont raccordés chacun au conduit périphérique 72 d'un poste 14 de nettoyage déterminé, et une série inférieure 96 de raccordement constituée par une seconde série de canaux radiaux 35 qui sont agencés globalement dans un même plan transversal et qui sont raccordés chacun au conduit central 74 d'un poste 14 de nettoyage déterminé.For this purpose, the connection hub 32 comprises an upper connection series 94 constituted by a first series of radial channels 33 which are arranged in the same transverse plane and which are each connected to the peripheral duct 72 of a cleaning station 14 determined and a lower connection series 96 formed by a second series of radial channels 35 which are arranged generally in the same transverse plane and which are each connected to the central duct 74 of a specific cleaning station 14.

La série supérieure 94 de raccordement est représentée en coupe transversale sur la figure 7 et la série inférieure 96 de raccordement est représentée en coupe transversale sur la figure 6.The upper series 94 connection is shown in cross section on the figure 7 and the lower series 96 of connection is shown in cross-section on the figure 6 .

Chaque canal radial 33, 35 comporte, à son extrémité externe, un orifice externe 98 qui est raccordé à une conduite flexible 90, 92 associée et, à son extrémité interne, un orifice interne 100 qui débouche en regard de la paroi axiale de la conduite principale 31 ménagée dans l'arbre 30.Each radial channel 33, 35 has, at its outer end, an external orifice 98 which is connected to a flexible pipe 90, 92 associated and, at its inner end, an inner orifice 100 which opens opposite the axial wall of the pipe main 31 formed in the shaft 30.

La paroi axiale 102 de la conduite principale 31 comporte, à la hauteur axiale de la série supérieure 94, une fenêtre 104 supérieure de distribution qui est prévue pour faire communiquer plusieurs canaux radiaux 33 de la série supérieure 94 avec la conduite principale 31, pendant un secteur angulaire du cycle de rotation du moyeu 32.The axial wall 102 of the main pipe 31 comprises, at the axial height of the upper series 94, an upper distribution window 104 which is provided to communicate a plurality of radial channels 33 of the upper series 94 with the main pipe 31, during a angular sector of the rotation cycle of the hub 32.

De manière similaire, la paroi axiale 102 de la conduite principale 31 comporte, à la hauteur axiale de la série inférieure 96, une fenêtre 106 inférieure de distribution qui est prévue pour faire communiquer plusieurs canaux radiaux 35 de la série inférieure 96 avec la conduite principale 31, pendant un secteur angulaire du cycle de rotation du moyeu 32.Similarly, the axial wall 102 of the main pipe 31 comprises, at the axial height of the lower series 96, a lower distribution window 106 which is designed to communicate several radial channels 35 of the lower series 96 with the main pipe. 31, during an angular sector of the rotation cycle of the hub 32.

Avantageusement, chaque fenêtre 104, 106 de distribution s'étend sur un secteur angulaire de valeur supérieure à l'écart angulaire entre deux orifices externes 98 consécutifs de manière à alimenter simultanément au moins deux canaux radiaux 33, 35 appartenant à la même série 94, 96, ce qui permet de réaliser le nettoyage simultanément dans au moins deux postes 14 de nettoyage.Advantageously, each distribution window 104, 106 extends over an angular sector of greater value than the angular difference between two consecutive external orifices 98 so as to simultaneously supply at least two radial channels 33, 35 belonging to the same series 94, 96, which makes it possible to carry out the cleaning simultaneously in at least two cleaning stations 14.

De préférence, les canaux radiaux 33, 35 sont répartis circonférentiellement de manière régulière.Preferably, the radial channels 33, 35 are distributed circumferentially in a regular manner.

On décrit maintenant le fonctionnement de la machine 10 au regard du cycle de nettoyage mis en oeuvre par un poste 14 de nettoyage.The operation of the machine 10 is now described with regard to the cleaning cycle implemented by a cleaning station 14.

Pendant le fonctionnement de la machine 10, la source 16 envoie de l'air comprimé dans le distributeur 28 et la plate-forme 20 est entraînée en rotation autour de son axe A1, dans le sens horaire R en considérant la figure 1.During the operation of the machine 10, the source 16 sends compressed air into the distributor 28 and the platform 20 is rotated about its axis A1, in the clockwise direction R by considering the figure 1 .

Le tube 36 d'insufflation et le boîtier 40 mobile occupant leur position basse, la bouteille 12 est saisie par la pince associée aux moyens de support 62, tel que représenté sur la figure 2.The insufflation tube 36 and the mobile housing 40 occupying their low position, the bottle 12 is gripped by the clamp associated with the support means 62, as shown in FIG. figure 2 .

La pince appartenant aux moyens de support 62 est ensuite commandée en pivotement autour de son axe A3 jusqu'à ce qu'elle vienne occuper la position de nettoyage.The clamp belonging to the support means 62 is then pivotally controlled about its axis A3 until it comes to occupy the cleaning position.

Pendant le pivotement de la pince associée aux moyens de support 62, ou à la fin de ce pivotement, le galet 52 du poste 14 de nettoyage, qui tourne autour de l'axe principal A1, vient en contact avec la rampe 60 de montée de la piste de roulement 54 et coopère avec cette rampe 60 ce qui provoque le coulissement du tube 36 d'insufflation depuis sa position basse vers sa position haute.During the pivoting of the clamp associated with the support means 62, or at the end of this pivoting, the roller 52 of the cleaning station 14, which rotates about the main axis A1, comes into contact with the ramp the raceway 54 and cooperates with this ramp 60 which causes the sliding of the insufflation tube 36 from its lower position to its upper position.

Pendant l'essentiel de la phase de montée Pm, qui est illustrée par la figure 3, l'orifice interne 100 du canal radial 35 associé au conduit central 74 du tube 36 d'insufflation est en regard de la fenêtre 106 inférieure de distribution, alors que l'orifice interne 100 du canal radial 33 associé au conduit périphérique 72 est en regard de la paroi axiale 102 de l'arbre 30. Par conséquent, seul l'orifice central 76 est alimenté en air comprimé qui circule suivant la flèche F1.During most of the rise phase Pm, which is illustrated by the figure 3 , the internal orifice 100 of the radial channel 35 associated with the central duct 74 of the insufflation tube 36 is facing the lower distribution window 106, whereas the internal orifice 100 of the radial channel 33 associated with the peripheral duct 72 is in With regard to the axial wall 102 of the shaft 30. Therefore, only the central orifice 76 is supplied with compressed air which flows along the arrow F1.

L'orifice central 76 de la buse 38 produit donc un jet central f1 vers la paroi interne 75 de fond qui tend à décrocher les résidus présents dans la bouteille 12, en particulier sur la paroi interne 75 de fond.The central orifice 76 of the nozzle 38 thus produces a central jet f1 towards the inner wall 75 of bottom which tends to unhook the residues present in the bottle 12, in particular on the inner wall 75 of the bottom.

De manière classique, le poste 14 de nettoyage peut comporter des moyens d'aspiration (non représentés) raccordés sur l'ouverture 13 de la bouteille 12 pour aspirer les résidus décrochés par le jet d'air comprimé.Typically, the cleaning station 14 may comprise suction means (not shown) connected to the opening 13 of the bottle 12 to suck the residues unhooked by the jet of compressed air.

Vers la fin de la phase de montée Pm, l'orifice interne 100 du canal radial 33 associé au conduit périphérique 72 du tube 36 d'insufflation vient en regard de la fenêtre 104 supérieure de distribution, de sorte que le conduit périphérique 72 est alimenté en air comprimé.Towards the end of the rise phase Pm, the internal orifice 100 of the radial channel 33 associated with the peripheral duct 72 of the insufflation tube 36 comes opposite the upper distribution window 104, so that the peripheral duct 72 is fed with in compressed air.

La fente annulaire 64 produit alors le jet périphérique f2 qui tend à décrocher les résidus présents sur les parois internes de la bouteille 12, en particulier sur les parois internes 66 latérales.The annular slot 64 then produces the peripheral jet f2 which tends to unhook the residues present on the inner walls of the bottle 12, in particular on the internal side walls 66.

Le tube 36 d'insufflation parvient à sa position haute, déterminée par l'arrivée du galet 52 sur le tronçon 56 d'altitude maximale de la piste de roulement 54, tel que représenté sur la figure 1.The insufflation tube 36 reaches its upper position, determined by the arrival of the roller 52 on the section 56 of maximum altitude of the raceway 54, as shown in FIG. figure 1 .

Le galet 52 parcourt ensuite la rampe 58 de descente ce qui provoque le coulissement du tube 36 d'insufflation vers le bas, c'est-à-dire la phase de descente Pd.The roller 52 then travels the ramp 58 descent which causes the sliding tube 36 for blowing down, that is to say, the descent phase Pd.

Au début de la phase de descente Pd, l'orifice interne 100 du canal radial 35 associé au conduit central 74 dépasse angulairement la fenêtre 106 inférieure de distribution, de sorte que le conduit central 74 n'est plus alimenté en air comprimé.At the beginning of the descent phase Pd, the internal orifice 100 of the radial channel 35 associated with the central duct 74 angularly exceeds the lower distribution window 106, so that the central duct 74 is no longer supplied with compressed air.

Pendant le reste de la phase de descente Pd, seul le conduit périphérique 72 est alimenté en air comprimé qui circule suivant la flèche F2.During the remainder of the descent phase Pd, only the peripheral duct 72 is supplied with compressed air which circulates along the arrow F2.

On constate que la forme particulière du jet périphérique f2 d'air comprimé produit par la fente annulaire 64, à savoir sa forme globalement tronconique, crée une dépression importante dans la partie haute de la bouteille 12, c'est-à-dire au-dessus du jet périphérique f2.It is found that the particular shape of the peripheral jet f2 of compressed air produced by the annular slot 64, namely its generally frustoconical shape, creates a significant depression in the upper part of the bottle 12, that is to say above the peripheral jet f2.

Cette dépression, associée à la position ouverture de la bouteille vers le bas, permet d'éliminer de manière efficace les derniers résidus présents dans la bouteille 12.This depression, associated with the opening position of the bottle downwards, effectively eliminates the last residues present in the bottle 12.

A la fin de la phase de descente Pd, l'orifice interne 100 du canal radial 35 associé au conduit périphérique 72 dépasse angulairement la fenêtre 104 supérieure de distribution, de sorte que le conduit périphérique 72 n'est plus alimenté en air comprimé.At the end of the descent phase Pd, the internal orifice 100 of the radial channel 35 associated with the peripheral duct 72 angularly exceeds the upper distribution window 104, so that that the peripheral duct 72 is no longer supplied with compressed air.

La bouteille 12, débarrassée de ses résidus, peut alors être retirée du poste 14 de nettoyage.The bottle 12, free of residues, can then be removed from the cleaning station 14.

Selon le mode de réalisation décrit précédemment, le conduit central 74 et le conduit périphérique 72 sont alimentés simultanément en air comprimé au voisinage de la position haute du tube 36 d'insufflation.According to the embodiment described above, the central duct 74 and the peripheral duct 72 are simultaneously supplied with compressed air in the vicinity of the upper position of the insufflation tube 36.

Selon une variante de réalisation (non représentée), les fenêtres 104, 106 de distribution, ou les orifices internes 100, peuvent être agencés de manière que l'alimentation du conduit périphérique 72 commence après la fin de l'alimentation du conduit central 74.According to an alternative embodiment (not shown), the windows 104, 106 of distribution, or the internal orifices 100, can be arranged so that the supply of the peripheral duct 72 begins after the end of the supply of the central duct 74.

Claims (8)

  1. Machine (10) for cleaning the inner walls (66, 75) of a receptacle such as a bottle (12) of the type comprising several cleaning stations (14) that are mounted so as to rotate about a main axis (A1) and that are distributed circumferentially about the main axis (A1), each cleaning station (14) is fitted with an insufflation tube (36) that extends along a substantially vertical axis (A2), that is connected to a source (16) of pressurized gas, and that is provided, at its top axial end, with a generally cylindrical nozzle (38) designed to insufflate the gas towards the inner walls (66, 75) of the receptacle (12), and each station is of the type comprising support means (62) that hold the receptacle (12) generally vertically so that the opening of the receptacle (12) is arranged downwards on the axis (A2) of the insufflation tube (36), of the type in which the insufflation tube (36) is controlled so as to slide along its axis (A2), during a cleaning cycle, between a top axial position, in which the nozzle (38) extends inside the receptacle (12), and a bottom axial position, the cleaning cycle comprising an ascending phase (Pm) corresponding to the ascending travel of the insufflation tube (36), from its bottom position to its top position, and a descending phase (Pd) corresponding to the descending travel of the insufflation tube (36), from its top position to its bottom position,
    characterized in that the nozzle (38) comprises an annular peripheral slot (64) that is capable of forming a peripheral jet (f2) of pressurized gas of generally frustoconical shape directed towards the inner side walls (66) of the receptacle (12) and downwards, when the nozzle (38) extends inside the receptacle (12), and in that the peripheral jet (f2) is triggered for at least a part of the descending phase (Pd) inside the receptacle (12),
    in that the source (16) of pressurized gas is common to several cleaning stations (14),
    in that the machine is fitted with a gas distributor (28) comprising :
    - a main fixed duct (31) that is coaxial with the main axis (A1), that is connected to the source (16) of pressurized gas and that comprises, in its axial wall (102), at least one distribution window (104, 106),
    - a connection hub (32) that is mounted so as to rotate about the main duct (31), that is connected rotatably to the cleaning stations (14) and that comprises a series of radial channels (33, 35),
    and in that each radial channel (33, 35) comprises, at its outer end, an outer orifice (98) that is connected to the insufflation tube (36) of an associated cleaning station (14) and, at its inner end, an inner orifice (100) that opens in line with the distribution window (104, 106) during an angular sector of the rotation cycle of the hub (32) so as to cause the supply of the associated insufflation tube (36) during an adequate period of the cleaning cycle.
  2. Machine (10) according to the preceding claim, characterized in that the insufflation tube (36) comprises a peripheral duct (72) that opens on the outside of the annular slot (64) and a central duct (74) that opens on the outside of a central orifice (76) situated at the free axial end of the nozzle (38), and in that the central orifice (76) is capable of producing a central jet (f1) of pressurized gas directed towards the bottom inner facing wall (75) of the receptacle (12), when the nozzle (38) extends inside the receptacle (12).
  3. Machine (10) according to the preceding claim, characterized in that the machine comprises a gas distributor (28) that supplies only the central duct (74) during at least a part of the ascending phase (Pm) and that supplies only the peripheral duct (72) during at least a part of the descending phase (Pd).
  4. Machine (10) according to the preceding claim, characterized in that the connection hub (32) comprises a first top series (94) of radial channels (33, 35) that are connected to the respective central ducts (74) of the associated insufflation tubes (36) and a second bottom series (96) of radial channels (33, 35) that are connected to the respective peripheral ducts (72) of the associated insufflation tubes (36), and in that the main duct (31) comprises a top distribution window (104) that is associated with the first top series (94) and a bottom distribution window (106) that is associated with the bottom series (96).
  5. Machine (10) according to the preceding claim, characterized in that, considering a determined insufflation tube (36), during the ascending phase (Pm), the inner orifice (100) of the radial channel (35) associated with the central duct (74) comes into line with the bottom distribution window (106), the inner orifice (100) of the radial channel (33) associated with the peripheral duct (72) being in line with the axial wall (102) of the main duct (31), and, during the descending phase (Pd), the inner orifice (100) of the radial channel (35) associated with the peripheral duct (72) comes into line with the top distribution window (104), the inner orifice (100) of the radial channel (35) associated with the central duct (74) being in line with the axial wall (102) of the main duct (31), so that only the central duct (74) is supplied with gas during the majority of the ascending phase (Pm), and so that only the peripheral duct (72) is supplied with gas during the majority of the descending phase (Pd).
  6. Machine (10) according to the preceding claim, characterized in that, considering a determined insufflation tube (36), in the vicinity of the top position of the insufflation tube (36), the inner orifices (100) of the two associated radial channels (33, 35) come into line with the corresponding distribution windows (104, 106) so that the central duct (74) and the peripheral duct (72) are supplied with gas simultaneously for a determined lapse of time.
  7. Machine (10) according to any one of Claims 5 to 7, characterized in that each distribution window (104, 106) extends over an angular sector of a value greater than the angular gap between the two consecutive inner orifices (100) of the same series of radial channels (33, 35) so as to supply simultaneously at least two radial channels (33, 35) of the same series.
  8. Machine (10) according to any one of the preceding claims, characterized in that the gas consists of compressed air.
EP05764049A 2004-07-20 2005-07-08 Multiple station machine for cleaning a container by scouring with a compressed gas peripheral jet Not-in-force EP1768795B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0451590A FR2873310B1 (en) 2004-07-20 2004-07-20 MACHINE FOR CLEANING A CONTAINER BY INSUFFLATION BY MEANS OF A PERIPHERAL JET OF COMPRESSED GAS
PCT/EP2005/053277 WO2006010701A1 (en) 2004-07-20 2005-07-08 Multiple station machine for cleaning a container by scouring with a compressed gas peripheral jet

Publications (2)

Publication Number Publication Date
EP1768795A1 EP1768795A1 (en) 2007-04-04
EP1768795B1 true EP1768795B1 (en) 2011-10-05

Family

ID=34946788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05764049A Not-in-force EP1768795B1 (en) 2004-07-20 2005-07-08 Multiple station machine for cleaning a container by scouring with a compressed gas peripheral jet

Country Status (8)

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US (1) US7487568B2 (en)
EP (1) EP1768795B1 (en)
JP (1) JP4505505B2 (en)
CN (1) CN1997463B (en)
AT (1) ATE527067T1 (en)
ES (1) ES2369700T3 (en)
FR (1) FR2873310B1 (en)
WO (1) WO2006010701A1 (en)

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Publication number Publication date
ATE527067T1 (en) 2011-10-15
US20070272287A1 (en) 2007-11-29
ES2369700T3 (en) 2011-12-05
WO2006010701A1 (en) 2006-02-02
EP1768795A1 (en) 2007-04-04
FR2873310A1 (en) 2006-01-27
CN1997463A (en) 2007-07-11
JP4505505B2 (en) 2010-07-21
JP2008506524A (en) 2008-03-06
US7487568B2 (en) 2009-02-10
FR2873310B1 (en) 2007-02-02
CN1997463B (en) 2011-07-06

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