EP0858411A1 - Verfahren und vorrichtung zum herstellen evakuierter, mit schüttgut, insbesondere gemahlenem kaffee, gefüllter packungen - Google Patents
Verfahren und vorrichtung zum herstellen evakuierter, mit schüttgut, insbesondere gemahlenem kaffee, gefüllter packungenInfo
- Publication number
- EP0858411A1 EP0858411A1 EP96932422A EP96932422A EP0858411A1 EP 0858411 A1 EP0858411 A1 EP 0858411A1 EP 96932422 A EP96932422 A EP 96932422A EP 96932422 A EP96932422 A EP 96932422A EP 0858411 A1 EP0858411 A1 EP 0858411A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor
- side walls
- packs
- pair
- hood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013590 bulk material Substances 0.000 title claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 title claims abstract 3
- 238000000034 method Methods 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 241000251730 Chondrichthyes Species 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH306495 | 1995-10-30 | ||
CH3064/95 | 1995-10-30 | ||
CH306495 | 1995-10-30 | ||
PCT/CH1996/000361 WO1997016347A1 (de) | 1995-10-30 | 1996-10-15 | Verfahren und vorrichtung zum herstellen evakuierter, mit schüttgut, insbesondere gemahlenem kaffee, gefüllter packungen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0858411A1 true EP0858411A1 (de) | 1998-08-19 |
EP0858411B1 EP0858411B1 (de) | 2000-01-05 |
Family
ID=4247823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96932422A Expired - Lifetime EP0858411B1 (de) | 1995-10-30 | 1996-10-15 | Verfahren und vorrichtung zum herstellen evakuierter, mit schüttgut, insbesondere gemahlenem kaffee, gefüllter packungen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0858411B1 (de) |
AU (1) | AU7124096A (de) |
DE (1) | DE59604132D1 (de) |
WO (1) | WO1997016347A1 (de) |
Families Citing this family (5)
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 |
TW483819B (en) | 1999-04-15 | 2002-04-21 | Sulzer Chemtech Ag | Method and plant for shaping strip-like films |
EP1044787B1 (de) * | 1999-04-15 | 2003-03-05 | Sulzer Chemtech AG | Verfahren zur Formgebung von streifenförmigen Folien |
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 |
Family Cites Families (2)
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 |
NL9101862A (nl) * | 1991-11-07 | 1993-06-01 | Sara Lee De Nv | Werkwijze en inrichting voor het vervaardigen van een gevuld en gesloten vacuuempak. |
-
1996
- 1996-10-15 EP EP96932422A patent/EP0858411B1/de not_active Expired - Lifetime
- 1996-10-15 AU AU71240/96A patent/AU7124096A/en not_active Abandoned
- 1996-10-15 DE DE59604132T patent/DE59604132D1/de not_active Expired - Lifetime
- 1996-10-15 WO PCT/CH1996/000361 patent/WO1997016347A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9716347A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU7124096A (en) | 1997-05-22 |
EP0858411B1 (de) | 2000-01-05 |
DE59604132D1 (de) | 2000-02-10 |
WO1997016347A1 (de) | 1997-05-09 |
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