WO1997016347A1 - Procede et dispositif de fabrication d'emballages sous vide contenant un produit en vrac, notamment du cafe moulu - Google Patents

Procede et dispositif de fabrication d'emballages sous vide contenant un produit en vrac, notamment du cafe moulu Download PDF

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Publication number
WO1997016347A1
WO1997016347A1 PCT/CH1996/000361 CH9600361W WO9716347A1 WO 1997016347 A1 WO1997016347 A1 WO 1997016347A1 CH 9600361 W CH9600361 W CH 9600361W WO 9716347 A1 WO9716347 A1 WO 9716347A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor
side walls
packs
pair
hood
Prior art date
Application number
PCT/CH1996/000361
Other languages
German (de)
English (en)
Inventor
Benno Himmelsbach
Siegfried Meier
Original Assignee
Sig Pack Systems Ag
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 Sig Pack Systems Ag filed Critical Sig Pack Systems Ag
Priority to AU71240/96A priority Critical patent/AU7124096A/en
Priority to EP96932422A priority patent/EP0858411B1/fr
Priority to DE59604132T priority patent/DE59604132D1/de
Publication of WO1997016347A1 publication Critical patent/WO1997016347A1/fr

Links

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
    • B65B31/022—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 the chambers moving in an endless path

Definitions

  • US Pat. No. 4,538,399 describes a method and a device for producing evacuated packs containing ground coffee.
  • the still unsealed packagings are delivered on a conveyor belt in holders at regular intervals.
  • the packs are pushed in pairs on a rotary table, which contains vacuum hoods.
  • the rotary table has two side walls for each pack, one of which can be swiveled. Facing the axis of the turntable there is a third side wall designed as a ram.
  • a fourth side wall is located on a wall of the lowered hood. During the evacuation, this plunger is pressed against the fourth side wall, so that the package is simultaneously compressed during the evacuation.
  • This device it is possible to produce guaderiform packs with flat side surfaces.
  • the finished packs are pushed back onto the conveyor belt.
  • the conveyor belt as well as the transfer device and the turntable move in cycles. 97/16347 PO7CH96 / 00361
  • the present invention has for its object to increase the performance of such a device. This task is solved by the combination of features of claims 1 and 4.
  • the second and fourth conveyors are preferably each designed as intermediate conveyors, which take over the packs from a first, preferably linear, conveyor or transfer them to it. Because the packs are each transferred to the third conveyor and back via an intermediate conveyor, this intermediate conveyor can have the same direction of movement on the transfer orders as the first or third conveyor, which is the case with the device described at the outset in accordance with US Pat 4,538,399 is not possible. This enables the transfer to take place with continuously running conveyors. Therefore, higher packaging performances can be achieved with careful handling of the packs.
  • the second and fourth conveyors do not necessarily have to be designed as intermediate conveyors.
  • a separate feed conveyor and discharge conveyor can also be used, e.g. be provided at diametrically opposite locations on the third conveyor. This variant also allows a continuous operation instead of an interactive one.
  • FIGS. 1 to 3 show a perspective view of the package in the open, semi-closed and sealed state
  • FIG. 4 shows a top view of the transfer points
  • FIG. 5 shows a detail of the one transfer point
  • FIG. 6 shows a side view of the transfer point
  • FIGS. 7 and 8 vertical sections through a vacuum hood
  • Figure 9 is a horizontal section through the hood
  • Figure 10 is a schematic vertical section through the vacuum wheel.
  • FIG. 1 shows a package 1 made of a flexible film 2 in the open state. It has a longitudinal fin seam 4 laid flat on a side surface 3 and a bottom 5 which is folded and cross-sealed analogously to the illustration according to FIGS. 2 and 3. the package is filled with bulk goods up to level 6 shown in broken lines, e.g. ground coffee, filled.
  • this pack is provided with double folds 7 at the upper edge (FIG. 2), evacuated and finally sealed with a transverse sealing seam 8 (FIG. 3).
  • FIG. 4 transfer points between a feed and discharge conveyor 12, a second conveyor 13, a third conveyor 14 and a fourth conveyor 15 are shown schematically.
  • the conveyor 12 has, at regular intervals, receiving pockets 16 with parallel side walls 17, which run transversely to the transport direction A, for receiving a pack 1 each. It can be designed, for example, as a chain conveyor or as a conveyor belt.
  • the intermediate conveyors 13, 15 have the same structure. They have a turntable 23, 24 driven about a vertical axis 21, 22. Holding elements 25, 26, which consist of two vertically standing angle plates 27, 28, are uniformly distributed over this circumference. Each sheet 27, 28 is fastened to an arm 29, 30. For the sake of a better overview, these arms 29, 30 and their actuation are only shown in one of the holding elements 25 of the conveyor 13.
  • the arms 29, 30 can be pivoted independently of one another about a common, vertical axis 31 and are offset from one another in the axial direction. Together with two further arms 32, 33 they form a double-armed lever.
  • the two arms 32, 33 carry rollers 34, 35 at their free ends.
  • the rollers 34, 35 roll on separate, vertically offset cams 36, 37.
  • the arms 29, 30 are tensioned against one another by a prestressed tension spring 38.
  • the cams 36, 37 are designed such that the side walls of the sheets 27, 28 at the transfer point 39 move from the conveyor 12 to the conveyor 13 parallel to the side walls 17 of the pockets 16. When approaching the transfer point 39, the side walls 27 are still a little larger apart than the side walls 17.
  • the circumferential speed of the axes 31 is approximately equal to the transport speed of the conveyor 12.
  • the cylinder 45 is moved back and forth in the transport direction, for example by means of a chain 46 rotating over two wheels and a parallel guide, not shown, in such a way that it rotates synchronously with the conveyor 12 for the transfer of the package 1.
  • the cams 36, 37 have a slightly smaller radius, so that the sheets 27 are pressed against the filled pack 1 by the spring 38.
  • a stationary, horizontal sliding plate 47 supports the packs 1 in the area of the conveyors 12 to 15 and the transfer points 39, 51, 55, 56 so that they do not slide down.
  • the finished packs 1 are transferred from the conveyor 15 to the conveyor 12 in a corresponding manner also by means of a plunger 48 with a periodically moving cylinder 49 and sliding plate 47 at the transfer point 51.
  • the transfer point 55 from the conveyor 13 to the conveyor 14 is shown in FIGS. 5 and 6.
  • the transfer point 56 from the conveyor 14 to the conveyor 15 functions analogously.
  • the conveyor 14 also includes a turntable 57 which rotates continuously about a vertical axis 58 ( Figure 10).
  • a vertical guide plate 59 extending in the form of a cylindrical segment extends between the positions 39, 55.
  • rear walls 60 are mounted at regular intervals distributed over the circumference, and side walls 62 which can be pivoted about vertical axes 61 and are divided in height.
  • the upper part 63 can be pivoted separately from the lower part 64.
  • the parts 63, 64 are controlled by a total of four cam discs 65, 66, 67, 68 via levers 70 and rollers 71 in such a way that all parts 63, 64 are spread directly in front of the transfer point 55, approximately as the middle plane of the pack 1 passes through by the common plane of the axes 21, 58 of the turntables 23, 57, the upper parts 63 are pressed against one another by the force of springs 69 (FIG. 9), so that they hold the packs 1. Thereupon the metal sheets 27, which pass below the parts 63, open. As soon as the holding elements 25 come out of the Once the packs 1 have turned away, the lower parts 64 of the side walls 62 also close. The side walls 62 are now pressed against the pack 1 by the springs 69. Only a small gap of less than two millimeters, preferably less than 1% of the height of the side walls 62 is provided between the upper and lower parts 63, 64. The gap between the parts 63, 64 is above half the height of the side walls 62
  • a base plate 73 is raised by a cam 74, so that the base 5 of the pack 1 is supported.
  • the height of the cam disk 74 can be adjusted by a cylinder 75.
  • the cylinder 75 is controlled by a control device 76 in the function of a sensor 77, which measures the level 6 of the bulk material in the package 1.
  • the bulk height of the bulk material can namely vary despite the same bulk material weight depending on the degree of grinding of the batch being processed.
  • the sliding plate 47 is shown rotated by 90 ° in FIG. 6. In reality it runs in front of the lowered base plate 73.
  • a vacuum hood 81 (FIGS. 7 to 9) moved along with the table 57 is moved down over the pack 1.
  • Each vacuum hood 81 is guided vertically displaceably on the table 57 by means of a rod 82 (FIG. 10).
  • the rods 82 have a roller 83 at the bottom, which rolls on a cam 84.
  • the hoods 81 are raised before reaching the transfer point 56 and lowered after passing through the point 55.
  • a sealing ring 85 seals the interior of the hood 81 by resting on the table 57.
  • the hood 81 has a wedge 87 on each of its two side walls 86.
  • the inner surfaces 88 of the two wedges 87 diverge towards the bottom.
  • these surfaces 88 run up Rollers 89, which are rotatably mounted on the lower parts 64 of the side walls 62.
  • the upper parts 63 are taken along by drivers 90 (FIG. 6).
  • the inner surfaces of the side wall parts 63, 64 lying one above the other are therefore in alignment and are parallel to the inner surfaces of the opposite side wall parts 63, 64.
  • a front wall 96 of the pack holder 97 of the table 57 is fastened to the front wall 94 of the hood 81 by means of a parallelogram linkage 95.
  • the wall 96 In the raised position of the hood 81 (indicated by a dot-dash line at the top right corner in FIG. 7), the wall 96 is pivoted away from the wall 60.
  • a roller 98 rotatably mounted on the wall 96 runs on a plate 99 and pivots the wall 96 from the basic position into a shark position.
  • the walls 60, 96 each have a plate-shaped support 105, on which a membrane 106 is attached.
  • Each membrane 106 carries a plunger 107, on which a rectangular plate 108 is attached.
  • the length and width dimensions of the plates 108 are slightly larger than those of the pack 1.
  • the side walls 62 are fixed in their end position and hold the pack 1 in position.
  • the base plate 73 is raised into the required position by the control device 76.
  • the interior 111 of the hood 81 is evacuated, the spaces 112 between the membrane 106 and the carrier 105 being able to be connected to the same vacuum in a first phase.
  • these opposite rooms 112 are pressurized with compressed air.
  • the package 1 is thus pressed in the horizontal direction so that its other Place the other side surfaces and the base 5 and the cover surface against the fixed side walls 62, the base plate 73 and an only indicated cover plate 113.
  • the cover plate 113 is in two parts and part of the conventional folding device (not shown) for producing the gusset folds 7. Towards the end of the pressing process, the transverse sealing seam 8 is formed with transverse sealing jaws 114. These sealing jaws 114 are also only indicated because their mode of operation is known in the art.
  • the interior 111 is reconnected to the atmosphere and the hood 81 is raised by means of the cam disc 84 before the package 1 in question reaches the transfer point 56.
  • the configuration described makes it possible for the packs 1 to be evacuated in the case of continuously running conveyors 12 to 15, to be pressed into a cuboid-shaped package with flat side surfaces, and to be closed.
  • a high packaging speed is achieved with gentle handling and thus avoiding injuries to the packaging film.
  • FIG. 1 A vertical section through the conveyor 14 is shown schematically in FIG.
  • the turntable 57 is on a zy Lindric stand 118 rotatably mounted. It is driven, for example, by a motor 119 via bevel gears 120, 121.
  • Two lines 122, 123 are guided in the stator 118.
  • the line 122 is connected to a compressed air source 124, the line 123 to a suction pump 125. Above the lines 122, 123 each lead into an annular groove 127, 128 in a hub 126 of the turntable 57.
  • a control unit 131 is assigned to each hood 81 and is supplied with current via taps 133 by slip rings 132.
  • Each control unit 131 is assigned two switches 134, 135 and two valves 136, 137.
  • the switches 134, 135 are actuated by cams 138, which are rigidly connected to the stand 118.
  • the valves 136, 137 are connected via a line 139 to the groove 127 and thus to the suction pump 125, the valve 136 additionally via a line 140 to the compressed air source 124.
  • the valve 137 controls the negative pressure within the hood 81 after it has been lowered and fill it with atmospheric air before lifting.
  • the valve 136 initially connects the spaces behind the membranes 106 to the suction pump 125 until the base plate 73 is raised to the final height. The rooms are then connected to the compressed air source 124. The packs 1 are thus compressed in the radial direction of the rotary table 57 by the flat plates 108.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

L'invention concerne des emballages (1) en forme de parallélépipède rectangle encore ouverts en haut. Un premier transporteur (12) linéaire transfert lesdits emballages à un second transporteur (13) intermédiaire rotatif qui les transfert à son tour à une table tournante (57). Sur la table tournante (57), sont disposées à intervalles réguliers des hottes sous vide (81) qui sont abaissées après la transmission des emballages. Les emballages (1) sont vidés de leur air. Ensuite, une pression est exercée sur les emballages lorsqu'ils sont dans une direction horizontale puis ils sont maintenus lorsqu'ils sont dans l'autre direction horizontale. Après le scellement transversal, les emballages (1) sont renvoyés au transporteur (12) linéaire par l'intermédiaire du second transporteur (15) intermédiaire. En permettant un fonctionnement continu du transporteur, le dispositif décrit offre des rendements de production élevés associés à une manipulation délicate des emballages.
PCT/CH1996/000361 1995-10-30 1996-10-15 Procede et dispositif de fabrication d'emballages sous vide contenant un produit en vrac, notamment du cafe moulu WO1997016347A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU71240/96A AU7124096A (en) 1995-10-30 1996-10-15 Method and device for the production of evacuated packets filled with loose bulk material, in particular ground coffee
EP96932422A EP0858411B1 (fr) 1995-10-30 1996-10-15 Procede et dispositif de fabrication d'emballages sous vide contenant un produit en vrac, notamment du cafe moulu
DE59604132T DE59604132D1 (de) 1995-10-30 1996-10-15 Verfahren und vorrichtung zum herstellen evakuierter, mit schüttgut, insbesondere gemahlenem kaffee, gefüllter packungen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH306495 1995-10-30
CH3064/95 1995-10-30

Publications (1)

Publication Number Publication Date
WO1997016347A1 true WO1997016347A1 (fr) 1997-05-09

Family

ID=4247823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1996/000361 WO1997016347A1 (fr) 1995-10-30 1996-10-15 Procede et dispositif de fabrication d'emballages sous vide contenant un produit en vrac, notamment du cafe moulu

Country Status (4)

Country Link
EP (1) EP0858411B1 (fr)
AU (1) AU7124096A (fr)
DE (1) DE59604132D1 (fr)
WO (1) WO1997016347A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1044787A1 (fr) * 1999-04-15 2000-10-18 Sulzer Chemtech AG Procédé pour la fabrication des bandes en accordéon
WO2001098148A1 (fr) * 2000-06-20 2001-12-27 Cryovac, Inc. Procede de charge, de mise sous vide, et de scellage haute vitesse d'articles ensaches
US6461559B1 (en) 1999-04-15 2002-10-08 Sulzer Chemtech Ag Method for shaping strip-like films
DE10118389A1 (de) * 2001-04-12 2002-10-17 Rovema Gmbh Vorrichtung zum Verschweißen befüllter Beutel, welche ein Vakuum aufweisen
DE19827059B4 (de) * 1998-06-18 2009-07-09 Robert Bosch Gmbh Vorrichtung zum Füllen, Evakuieren und Verschließen von Verpackungsbehältern

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340668A (en) * 1964-09-28 1967-09-12 American Can Co Apparatus for and method of hermetically sealing a package
EP0541183A1 (fr) * 1991-11-07 1993-05-12 Sara Lee/DE N.V. Procédé et dispositif pour la fabrication d'un emballage sous vide rempli et fermé

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340668A (en) * 1964-09-28 1967-09-12 American Can Co Apparatus for and method of hermetically sealing a package
EP0541183A1 (fr) * 1991-11-07 1993-05-12 Sara Lee/DE N.V. Procédé et dispositif pour la fabrication d'un emballage sous vide rempli et fermé

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827059B4 (de) * 1998-06-18 2009-07-09 Robert Bosch Gmbh Vorrichtung zum Füllen, Evakuieren und Verschließen von Verpackungsbehältern
EP1044787A1 (fr) * 1999-04-15 2000-10-18 Sulzer Chemtech AG Procédé pour la fabrication des bandes en accordéon
US6461559B1 (en) 1999-04-15 2002-10-08 Sulzer Chemtech Ag Method for shaping strip-like films
WO2001098148A1 (fr) * 2000-06-20 2001-12-27 Cryovac, Inc. Procede de charge, de mise sous vide, et de scellage haute vitesse d'articles ensaches
US6499274B1 (en) 2000-06-20 2002-12-31 Cryovac, Inc. Method for high speed loading, vacuumizing and sealing of a bagged article
DE10118389A1 (de) * 2001-04-12 2002-10-17 Rovema Gmbh Vorrichtung zum Verschweißen befüllter Beutel, welche ein Vakuum aufweisen

Also Published As

Publication number Publication date
EP0858411A1 (fr) 1998-08-19
EP0858411B1 (fr) 2000-01-05
DE59604132D1 (de) 2000-02-10
AU7124096A (en) 1997-05-22

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