WO1997016347A1 - Method and device for the production of evacuated packets filled with loose bulk material, in particular ground coffee - Google Patents

Method and device for the production of evacuated packets filled with loose bulk material, in particular ground coffee

Info

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
Grant status
Application
Patent type
Prior art keywords
conveyor
side
walls
transfer
hood
Prior art date
Application number
PCT/CH1996/000361
Other languages
German (de)
French (fr)
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02Filling, 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
    • B65B31/022Filling, 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

Abstract

The invention relates to cuboid-shaped packets (1) with loose bulk material and still open at the top. The said packets are transferred from a first linear conveyor (12) to a rotating intermediate conveyor (13) which transfers the packets to a revolving table (57). Vacuum hoods (81) are arranged on the revolving table (57) at regular intervals and are lowered after the transfer operation. The packets (1) are evacuated and compressed when in the one horizontal direction and held when in the second horizontal direction. After transverse sealing, the packets (1) are returned to the linear conveyor (12) by a second intermediate conveyor (15). The continuous operation of the conveyor achieved by the above device results in a high rate of production with careful handling of the packets.

Description

Method and apparatus for producing evacuated, with bulk material, in particular ground coffee, filled packages

In U.S. Patent 4,538,399 a method and Vorrich¬ is processing for producing evacuated packs containing gemah¬ ground coffee described. The still unsealed Packun¬ gen are delivered on a conveyor belt in holders at regular intervals. the packs are pushed in pairs on a turntable by means of tappets at a transfer station, which includes vacuum caps. The turntable has two side walls, of which one is pivoted to each package. The axis of the turntable facing befin¬ det is designed as a plunger third side wall. A fourth side wall located on a wall of the ab¬ lowered hood. During evacuation of this Stö¬ Key is pressed against the fourth side wall, so that the Pak effect is compressed during evacuation simultaneously. With this apparatus guaderförmige packages can thus be made with flat sides. The fertiggestell¬ ten packs are pushed back onto the conveyor belt zurückge¬. Both the conveyor and transfer means and the turntable thereby move in cycles. 97/16347 PO7CH96 / 00361

The present invention has for its object to increase the performance of such a device. This Aufga¬ be is solved by the feature combination of claims 1 and 4. FIG.

Preferably, the second and fourth conveyors are each formed as the intermediate conveyor, which take over the packs of ei¬ nem first, preferably linear conveyor or hand them over to him. Because the packs are give in each case via an intermediate conveyor to the third conveyor and back über¬, this intermediate conveyor can order the Ueberga- each has the same direction of movement have as the first or third conveyor, which in the initially beschrie¬ surrounded device according to US-PS 4,538,399 is not possible. This allows the handover can take place at kontinuier¬ Lich speed conveyors. Therefore hö¬ here packaging services can be achieved with careful handling of the packages.

However, the second and fourth conveyor need not be not¬ sarily formed as intermediate conveyor. Instead of the single linear feed and discharge conveyor according to prior art, a separate feed conveyor and removal conveyor, for example, can be provided at diametrically opposed locations of the third conveyor. In this variant is possible a kontinuerlicher instead of an international mitierenden operation.

An exemplary embodiment of the invention is an¬ hand of the drawings. In which:

Figures 1 to 3 is a perspective view of the package in the open, half-closed and sealed condition, Figure 4 is a plan view of the transfer points,

5 shows a detail of a transfer point,

Figure 6 is a side view of the transfer station,

Figures 7 and 8 are vertical sections through a vacuum hood,

Figure 9 is a horizontal section through the hood, and

Figure 10 shows a schematic vertical section through the vacuum wheel.

1 shows a package 1 is shown of a flexible film 2 in the open state. It has a flattened on one side surface 3 of the longitudinal fin seam 4 and a bottom 5, which is analogous to the folded representation according to Figures 2 and 3 and sealed transversely. the package is up to the level shown in broken lines 6 with bulk material, for example ge mahlenem coffee filled. This pack is kelfalten as described nach¬ following device at the upper edge with Zwik- 7 is provided (Figure 2), evacuated and, finally, with a transverse sealing seam sealed 8 (Figure 3).

In Figure 4, transfer points between a supply and discharge conveyor 12, a second conveyor 13, a third conveyor 14 and fourth conveyor 15 are schematically represents darge. The conveyor 12 has transfer bags at regular intervals up 16 with parallel, transverse to the transport direction A side walls 17, each for receiving a kung Pak l. It may be formed, for example, as a chain conveyor or a conveyor belt. The intermediate conveyors 13, 15 have the same structure. They have a driven about a vertical axis 21, 22 turntable 23, 24. At this are holding elements 25, 26 comparatively uniformly over the circumference divides, which consist of two vertically standing angle plates 27, 28th Each sheet 27, 28 is attached to an arm 29, 30 be¬ solidifies. The better overview because these arms 29, 30 and their operation are shown only for one of the retaining elements 25 of the conveyor. 13 The arms 29, 30 are displaced about a common vertical axis 31 are independently pivotable and in the axial direction against each other. They each form a doppelarmi- gen lever with two other arms 32, 33rd The two arms 32, 33 carrying at their free ends rollers 34, 35. The rollers 34, roller 35 th to separa¬ vertically mutually offset cams 36, 37. The arms 29, 30 are clamped against each other by a prestressed tension spring 38th The cam plates 36, 37 are formed so that 27, 28 is aligned parallel to the side walls 17 of the pockets 16 in the transfer station 39 from conveyor 12 to conveyor 13, the side walls of the sheets move to this. When approaching the Uebergabestel¬ le 39, the side walls 27 have a slightly more GroE sseren distance than the side walls 17. The Umfangsgeschwin¬ speed of the axes 31 is approximately equal to the speed of the conveyor Transportge¬ 12th

In the transfer point 39 is located on the Förde¬ rer 13 opposite side of the conveyor 12 a STOE Key 44, eg by means of a pneumatic cylinder 45 senk¬ can quite be advanced to the transport direction A by a product 1 from a pocket 16 in a thus pushing ausgerichte¬ tes holding member 25th The cylinder 45 is moved, for example by means of two wheels circulating chain 46 and ei¬ ner parallel guide, not shown in Transportrich¬ tung back and forth such that it runs along synchronously each for transferring the package 1 with the conveyor 12th Once the packet 1 is pushed ein¬ in the corresponding holding member 25, the cam plates 36, 37 a ge ringfügig smaller radius, so that the sheets are pressed 27 to the filled package 1 by the spring 38 have. A stationary, horizontal sliding plate 47 supported the packs 1 in the area of ​​the conveyors 12 to 15 and the über¬ transfer points 39, 51, 55, 56 so that they certainly do not slide down.

The transfer of the finished packages 1 from the conveyor 15 to the conveyor 12 takes place analogously also by a STOE Key 48 having a periodically moved along the cylinder 49 and sliding plate 47 at the transfer point 51st

The transfer station 55 from conveyor 13 to conveyor 14 is shown in Figures 5 and 6. FIG. The transfer station 56 from conveyor 14 onto the conveyor 15 functions sinnge¬ Mäss. The conveyor 14 also includes a rotary table 57, about a vertical axis 58 (Figure 10) rotates continuously. Between points 39, 55, a zy relieving segment-shaped, vertical guide plate 59 extends to the plate 57 along the circumference at regular intervals distributed back walls 60 is mounted, as well as around vertical axes 61 pivotable, two-divided in the height of the side walls 62. The upper part 63 iεt separately from the bottom part 64 pivotably bar. The parts 63, 64 are sliced ​​by a total of four Kurven¬ 65, 66, 67, 68 of levers 70 and rollers 71 is controlled such that are spread immediately before the transfer point 55 all the parts 63, 64, approximately during the passage of the center plane of the package 1 by the common plane of the axes 21, 58 of the rotary table 23, 57 the upper parts 63 by the force of springs 69 (Figure 9) against each other ge be suppressed, so that they hold the packs. 1 Thereupon, the sheets 27, which run through below the members 63 open. Once the retaining elements 25 have rotated away from the loading area of ​​the packages 1, close the bottom portions 64 of the side walls 62. Now, the walls are Seiten¬ 62 presses ange¬ by the springs 69 against the package. 1 Between the upper and lower parts 63, 64, only a small gap of less than two millimeters, preferably less than 1% of the height of the side walls 62 is provided. The gap between the parts 63, 64 is ober¬ half of the half of the height of the side walls 62nd

Upon further rotation of the table 57, a base plate is lifted by a cam 74 73, so that the base 5 is supported by the pack. 1 The cam plate 74 is adjustable in height by a cylinder 75 miles. The cylinder 75 is controlled by a control device 76 in function of a sensor 77, which is the level 6 of the bulk material measure in the package. 1 The bed height of the bulk material can in fact, despite the same bulk weight vary the lot being processed according to the Mahl¬ degree. The sliding or friction bearing plate 47 is shown rotated in Fig. 6 by 90 °. In Wirk¬ friendliness it passes in front of the lowered base plate 73rd

Upon further rotation of the turntable 57 outside the Be¬ of the conveyor 23 is a realm mitbe¬ wegte vacuum hood 81 to the table 57 (Figures 7 to 9) down over the packing. 1 Each vacuum hood 81 is by means of a rod 82 (Figure 10) vertically displaceable ge leads at the table 57th The rods 82 have a bottom roller 83 which rolls on a cam 84th So that the covers are raised 81 before reaching the transfer station 56 and lowered after passing through the place 55th In the abgesenk¬ th position, a sealing ring 85 seals the interior of the hood 81 from by resting on the table 57th The dome 81 has at its two side walls 86 each have a wedge 87. The inner surfaces 88 of the two wedges 87 diverge against un¬ th. When lowering the hood 81, these surfaces run 88 on rollers 89 which at the lower parts 64 of the Seiten¬ walls 62 are rotatably mounted. By driver 90 (Figure 6) the upper parts 63 are taken. Therefore, in the lowered position of the hood 81, the inner surfaces of the superposed aligned side-wall parts 63, 64 and are par¬ allel wall parts to the inner surfaces of the opposite Seiten¬ 63, 64th

On the front wall 94 of the hood 81, a front wall 96 of the Packungshal¬ ters 97 of the table 57 is fixed by means of a Paral¬ lelogrammgestänges 95th In the raised Stel¬ the hood 81 lung (indicated knit lines in FIG 7 at the right upper corner), the wall is pivoted away from the wall 60 96th When lowering the hood 81 a rotatably mounted on the wall 96 runs on roller 98 on a plate 99 and the wall 96 is pivoted from the basic position in a Haitestellung.

The walls 60, 96 each have a piattenförmigen carrier 105, on which is mounted a diaphragm 106th Each diaphragm 106 carries a plunger 107, on which is mounted a rectangular plate 108th The length and Breitenabmessun¬ gene of the plates 108 are slightly larger than those of the pack. 1

After lowering of the hood 81, the side walls are fixed in their end position 62 and hold the package 1 in Posi¬ tion. The bottom plate 73 is raised by the control means 76 in the required position. At the same time, the interior is evacuated 111 of the hood 81, the spaces 112 may be connected between the diaphragm 106 and carrier 105 to the same vacuum in ei¬ ner first phase. On closing these opposing spaces are acted 112 with compressed air. Thus, the package 1 is pressed into the ei¬ nen horizontal direction, so that ge their On the other ren side surfaces and the bottom 5 and the top surface of the fixed side walls 62, the bottom plate 73 and an only indicated cover plate 113 gene to create. The cover plate 113 is in two parts and part of the non presented darge, conventional folding means for making the gusset folds 7. Towards the end of the pressing operation is formed with transverse sealing jaws 114, the transverse sealing seam. 8 These sealing jaws 114 are also merely indicated, because they work in the field is known.

After sealing the inner space 111 is again connected to the atmosphere and the hood lifted by the disc 84 Kurven¬ 81 before the package 1 reaches the transfer point in question 56th

At this point 56, the reverse process takes place as at point 55. First, the lower portions 64 of the open side walls 62, so that the spread elements 28 of the sheets Halte¬ can enter 26th The base plate 73 is lowered abge¬. Now, the plates include 28 and hold the finished package 1, whereupon the open upper part 63, so that the package 1 extends on the conveyor 15 from the side walls 62 of the conveyor fourteenth Finally, the package 1 is shifted at the position 51 on the conveyor 12th

The described construction makes it possible for the packs 1 in evacuated continuously running conveyors 12 to 15, pressed tenflächen to a cuboid package with flat Sei¬ and can be sealed. It will exercise a high packaging speed with gentle Handha¬, reaching avoid injury of Verpackungs¬ film.

10 shows a vertical section through the conveyor 14 is shown schematically. The turntable 57 is rotatably mounted on a zy-cylindrical stator 118th It is to play Bei¬ by a motor 119 via bevel gears 120, 121 ange¬ exaggerated. In the stand 118 are two lines 122, 123 performs ge. The line 122 is connected to a compressed air source 124, the conduit 123 to a suction pump 125th Mün¬ above the lines 122, 123 into a respective annular groove 127, 128 in a hub 126 of the turntable 57th

Each hood 81 is associated with a control unit 131, wel¬ cher about 133 taps is supplied through slip rings 132 with electricity. Each control unit 131 are two switches 134, 135 and two valves 136, assigned to the 137th The switches 134, 135 are operated by cam plates 138 which are rigidly connected to the stand 118th The valves 136, 137 are connected via a line 139 with the groove 127 and thus to the suction pump 125, the valve 136 also has a line 140 to the compressed air source 124. The Ven¬ til 137 controls the negative pressure within the hood 81 to their lowered and filled with atmospheric air before lifting. The valve 136 connects the space behind the diaphragms 106, first to the suction pump 125 until the Bo¬ denplatte is raised to the final height 73rd Then, the spaces with the air pressure source 124 are connected. Da¬ with the packs 1 in the radial direction of Drehti¬ be compressed ULTRASONIC 57 through the flat plates 108th

Claims

claims
1. A method for manufacturing evacuated, with bulk material, in particular ground coffee, filled packings (1), wherein the packs (1) from a first rer Förde¬ (12) NEN a second conveyor (13) and from the latter to ei¬ the third conveyor (14) are passed, which contains several revolving vacuum hoods (81), the packs (1) after evacuation and sealing to a fourth Förde¬ rer (15) and from this back to the first conveyor (12) are passed, and wherein after the transfer of the Packun¬ gene (1) from the second conveyor (13) on the third conveyor (14) is placed a first pair of side walls (62) for holding the Packun¬ gene (1) in its closed end position, a second pair of side walls (108) is brought into an intermediate position and in a second step with an existing vacuum pressure in the vacuum hood (81), the second Seitenwand¬ couple (108) is moved into its pressing position.
2. The method of claim 1, wherein a pack the base (5) supporting the base plate (73) prior to the initiation of the second step is raised into an upper end position.
3. The method of claim 1 or 2, wherein the second pair of side walls (108) is moved be¬ in the pressing position by a respective acted upon with a Druckme¬ dium member (106).
4. Apparatus for carrying out the method according to any one of claims 1 to 3 for producing evakuier¬ ter, with bulk material, in particular ground coffee, gefüll¬ ter packs (1) comprising a first conveyor (12) for feeding the non-closed packs (1) a second conveyor (13) onto a third conveyor (14), cher wel¬ several revolving vacuum bags (81), and a fourth conveyor (15) for receiving the sealed packs (1) from the third conveyor (14) and for transferring these packages (1) on the first conveyor (12), wherein the third conveyor (14) of each hood (81) associated with first and second pairs of side walls (62, 108), wherein the first pair of side walls (62) by a first drive means (65 -69, 87) from an open basic position into its end position is movable and the second pair of side walls (108) by a second drive means (95, 98, 99) from a basic position into an intermediate position and a third a ntriebsmit¬ tel (106) is moved into its pressing position.
comprise 5. Device according to claim 4, wherein the second and fourth conveyor (13, 15) each around a vertical axis (21, 22) are rotatable and a plurality of retaining elements (25, 26) for receiving the packs (1).
6. The apparatus of claim 5, wherein the Hal¬ teelemente (25, 26) at the transfer point (39, 51) from or to the first conveyor (12) in an approximately parallel direction to Aus¬ holding members (16) on the first conveyor ( 12) are movable, and wherein they are designed such that they (the transfer points 55, 56) to and from the third conveyor (14) to open.
7. Device according to one of claims 4-6, wherein the second drive means comprises two parallel levers (95), one end of the hood (81) and whose ande res end is hinged to a side wall bracket (105).
8. Device according to one of claims 4 to
7, wherein the third drive means each includes a through a medium Druck¬ pressurizable diaphragm (106).
9. Device according to one of claims 4 to
8, wherein the side walls of the first side wall pair (62) are pivotable about axes (61) and the first drive means (65 to 69, 87) springs (69) and Kurvensσheiben (65 to 68) for pivoting said side walls includes (62).
10. The apparatus of claim 9, wherein the ste er¬ drive means additionally comprises rollers (89) which accrues during the lowering of the hood (81) for wedges (87) walls at the Seiten¬ (86) of the hood (81).
11. The device according to one of claims 4 to 10 wherein the third conveyor (14) holding means (63) for Hal¬ the packs (1) th at the transfer from the second Förde¬ rer (13).
12. The apparatus of claim 11, wherein the side walls (62) of the first side wall pair are divided in two in the height and the upper part (63) of these side walls (62) independently of the lower part (64) is pivotable in the Ensteilung.
13. The apparatus of claim 12, wherein the separating point between the upper and lower side wall portion (63, 64) is arranged above half of the height of the pairs of side walls (62).
14. The apparatus of claim 12 or 13, wherein the gap between the upper and lower side wall portion (63, 64) is less than 1% of the height of the first Seitenwandpaa¬ res (62).
15. Pack of bulk material, in particular gemah¬ lenem coffee, prepared by the method according to any one of claims 1 to 3, wherein all six sides of the pack are flat and at least the side edges are gleich¬ moderate and not tenflächen through the levels of the adjacent Sei¬ protrude.
PCT/CH1996/000361 1995-10-30 1996-10-15 Method and device for the production of evacuated packets filled with loose bulk material, in particular ground coffee WO1997016347A1 (en)

Priority Applications (2)

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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996504132 DE59604132D1 (en) 1995-10-30 1996-10-15 A method and apparatus for producing evacuated, with bulk material, in particular ground coffee, filled packaging
EP19960932422 EP0858411B1 (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

Publications (1)

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

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ID=4247823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1996/000361 WO1997016347A1 (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

Country Status (3)

Country Link
EP (1) EP0858411B1 (en)
DE (1) DE59604132D1 (en)
WO (1) WO1997016347A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1044787A1 (en) * 1999-04-15 2000-10-18 Sulzer Chemtech AG Process for forming of strip like sheets
WO2001098148A1 (en) * 2000-06-20 2001-12-27 Cryovac, Inc. Method for high speed loading, vacuumizing and sealing of a bagged article
US6461559B1 (en) 1999-04-15 2002-10-08 Sulzer Chemtech Ag Method for shaping strip-like films
DE10118389A1 (en) * 2001-04-12 2002-10-17 Rovema Gmbh Welding device for filled vacuum bags for e.g. coffee etc. has transporter to move filled bags through vacuum chamber containing sealing station and air evacuation device
DE19827059B4 (en) * 1998-06-18 2009-07-09 Robert Bosch Gmbh Device for filling, evacuating and sealing of packaging containers

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 (en) * 1991-11-07 1993-05-12 Sara Lee/DE N.V. Method and apparatus for making a filled and closed vacuum pack

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 (en) * 1991-11-07 1993-05-12 Sara Lee/DE N.V. Method and apparatus for making a filled and closed vacuum pack

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827059B4 (en) * 1998-06-18 2009-07-09 Robert Bosch Gmbh Device for filling, evacuating and sealing of packaging containers
EP1044787A1 (en) * 1999-04-15 2000-10-18 Sulzer Chemtech AG Process for forming of strip like sheets
US6461559B1 (en) 1999-04-15 2002-10-08 Sulzer Chemtech Ag Method for shaping strip-like films
WO2001098148A1 (en) * 2000-06-20 2001-12-27 Cryovac, Inc. Method for high speed loading, vacuumizing and sealing of a bagged article
US6499274B1 (en) 2000-06-20 2002-12-31 Cryovac, Inc. Method for high speed loading, vacuumizing and sealing of a bagged article
DE10118389A1 (en) * 2001-04-12 2002-10-17 Rovema Gmbh Welding device for filled vacuum bags for e.g. coffee etc. has transporter to move filled bags through vacuum chamber containing sealing station and air evacuation device

Also Published As

Publication number Publication date Type
DE59604132D1 (en) 2000-02-10 grant
EP0858411A1 (en) 1998-08-19 application
EP0858411B1 (en) 2000-01-05 grant

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