FI85003C - Packing Machine - Google Patents

Description

1 85003

packing Machine

The invention relates to a machine for packaging a product in a bag in a vacuum or in a controlled atmosphere, comprising vessels 5 and lids (I-X) arranged in two separate annular conveying devices, the annular tracks of the conveying devices being in two separate, superimposed horizontal planes.

Various packaging machines using a vacuum or controlled air are known from industrial practice, technical professional publications, and the international patent literature. In all known machines, the empty bags are transferred from the forming station to the filling transport device, from which they are taken out in connection therewith and transported inside the packing and closing clocks by means of a vacuum or controlled air.

When bags are transferred from forming stations to filling stations and from there to shut-off clocks where they are protected from the outside air, blockages can occur which limit the overall performance of the entire packaging process.

Therefore, interference may occur when the sealed bags are removed from said clocks and fed to other stations where further work is required to complete the process before the square packs are transferred to the conveyor belts for final removal.

The main problem to be solved is precisely the removal of all the obstacles that may arise during numerous shipments, both 30 empty bags before filling and full bags before vacuum sealing and also sealed bags before carrying out the necessary manufacturing work to package the products per square meter. shaped packages.

The above-mentioned problem is solved by a packaging machine, which according to the invention is characterized in that the trays 2 85003 are formed as clocks, so that the bags can be taken directly to the clocks, inside which the bags remain continuously throughout the technical process.

With the machine according to the invention, the bags are fed directly to the clocks already at the beginning of the working cycle, inside which they always remain for the entire technical operating period, in which case they are removed only after they have been packed into finished square packages.

The machine according to the invention, constructed according to the proposed new solution, eliminates the above-mentioned problems which still exist in already known machines. In the machine according to the invention, all the possibilities of clogging that occur when moving the bags are eliminated, because the bags are fed directly to the clocks inside which they remain already at the beginning of the work cycle, without having to be moved in any way. The invention arose as a result of numerous systematic experiments confirming the fact and assumption that by eliminating many bag transfers, it is possible to remove the typical blockages that occur in various bag transfer operations.

In practical experiments using a high manufacturing speed, a few million packages were made without any interference.

According to a preferred embodiment of the machine according to the invention, the conveying device under the machine is longer and provided with a plurality of clocks which are equidistant from each other and have an upwardly directed tii-30 colliding surface.

According to another preferred embodiment of the machine according to the invention, the conveying device above is shorter and has a smaller number of lids at the same distance from each other and at the same step distance as the clocks, but their sealing surface is directed downwards.

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According to a preferred embodiment of the machine according to the invention, the two conveying devices pass through at least one part in which the overlapping parts are similar and in which, under constant conditions and under the same kinematic conditions, complete adaptation is achieved by superimposing each separate downwardly directed cover , the sealing level of the upward-facing clocks below it, giving an air-10 vis seal.

In addition, according to a preferred embodiment of the machine according to the invention, there is a part along which the two conveying devices provide a constant kinematic similarity between the covers and the clocks, which guarantees the exact position of the respective sealing planes on top of each other, the machine being arranged to carry out its possible feeding before sealing the bags, protected from the outside, into full bags inside the watches kept hermetically sealed by this ta-20 butter.

According to another preferred embodiment of the machine according to the invention, it is arranged to close the clocks, i.e. to feed the respective lids kinematically in such a way that the path of the two superimposed conveying devices narrows so as to achieve a constant kinematic similarity.

According to a preferred embodiment of the machine according to the invention, it is arranged to open the clocks, i.e. to remove the respective covers kinematically in such a way that the two superimposed conveying devices differ from each other, so that the constant kinematic similarity is canceled.

According to a preferred embodiment of the machine according to the invention, it is arranged to move the watches without lids, i.e. open from above, upwards of the kinematic part so that the bags in the same watch can be stably subjected in a certain order to prepare them upwards. orientable or downwardly directed to make them.

The invention will now be described in more detail by means of the following structural examples with reference to the drawings. In the drawings, Fig. 1 shows a perspective snapshot of the operation of the technical process for compressing vacuum or controlled air bags using a strip of flexible material, Fig. 2 shows the position of both conveying devices when the covers connected to the overhead conveyor have rotated, i.e. , as they pass under them, the clocks connected to the lower conveying device have simultaneously moved forward by ten steps, Fig. 3 shows a snapshot of the machine, while both the clocks and the synchronized covers moving over them have moved forward by another ten steps, Figs. 25 of the lower conveying device and a part 26 of the upper conveying device which are geometrically identical, the identical Kine-25 matrix being stable, Figures 6, 7 and 8 show other possible structures of the part in which both a separate conveyors 25 and 26 have the same identical, synchronized path in two horizontal planes, 30 Figures 9, 10, 11, 12 and 13 show possible combinations of ring-shaped tracks of both conveyors 25 and 26 when in the respective overlapping horizontal planes, Figure 14 shows a possible variation of the mandrel-35 cone 42 to form bags with respect to the path of the clock conveyor 25, Fig. 15 shows another constructional variation in which bags from a forming station (not shown) are fed empty directly into separate, synchronously passing clocks connected to a conveying device 25, Fig. 16 shows to form another possible variation of the location of the star 42 from which the bags are fed directly to separate clocks connected in synchronism to the passing conveying device 25, Fig. 17 shows a structural variation of the device to which Figure 18 is another combination of a device comprising a mandrel support star 42 15 placed horizontally and from which empty bags are fed directly to clocks arranged for this purpose in a correspondingly horizontal position.

In the drawing, the clocks are numbered 1-24. Lids 20 are denoted by the Roman numerals I to X. Passing bags are denoted by the numbers 95 to 146. Numeral 25 denotes the lower conveying device, number 26 the upper conveying device, and number 27 denotes the final removal-25 conveyor belt of the bags already packed into square-shaped packages. The number 28 denotes the reversing distributor of the vacuum circuit required for removal into the bag. Number 29 stands for vacuum pump. Numeral 30 denotes a vacuum suction circuit, 31 a pulse generator for heat sealing, 32 a pulse reversing distributor for shut-off pliers (not shown) 30 located inside the lids, 33 denotes a filling dispenser for the substances to be fed into the bags passing below it, 34 a pressure device 35 for sealing the substances a device for vibrating the substances transferred to the passing bags, 36 a filling height detector for the substances fed to the passing bags, 37 a device for forming side bellows in the bags and a number 38 cutting device for cutting off the excess end of the bags after the side bellows are formed.

Numeral 39 denotes a device which finally presses the end of the package-5 flat, 40 a device which forms an adhesive tongue which fastens the folds to the end of the package, and numeral 41 a device which takes the package out to feed it on the discharge belt.

Numeral 42 denotes a mandrel star for forming bags 10, numeral 43 denotes a spool from which a film of flexible material is unwound to form bags, 44 a fixed cam which causes vertical movements in a removal device 45 which pulls the bags out of the mandrel and feeds them into the moving parts below. to watches, number 46 tar-15 has a rod that causes the cutting device 47 to cut the film over the mandrels, 48 a vertical packaging machine to form and fill the bags before feeding them to the watches, and number 49 a feed belt for empty bags from a forming station (not shown).

It can be seen from Figure 1 that in 24 watches the sealing plane always faces upwards, while in the cover 10 the sealing plane faces downwards. Furthermore, it can be seen from Fig. 1 that the two conveying devices 25 and 26 pass through at least one part which is always geometrically identical at the top and bottom 25 and in which in each case a constant adaptation takes place between the sealing surface of the lids and the sealing surface of the watches. Throughout the part where both conveying devices 25 and 26 provide kinematic uniformity, it is also ensured that the covers I, II, III, IV and V are in each case exactly on the clocks 11, 12, 13, 14 and 15, so that ensuring that they are hermetically sealed, enabling them to be emptied and possibly filled with noble gas before the bags are sealed without access to the outside air.

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In addition, it can be seen from Fig. 1 that vacuum gauges are arranged on the top ten decks I to X, which indicate the vacuum inside and in which the pointer plots the degree of vacuum obtained at 11 a.m. 11, 12, 13, 14 and 15. This evacuation and the possible supply of noble gas for replenishment takes place by means of devices already known per se (not shown) via pipes connecting the ten covers by means of a rotary distributor 28 to a vacuum circuit 30 activated by a pump 10 with a vacuum gauge 29 shown in a diagram with an optimum degree of vacuum above. The bag closing devices inside the clocks, which are thus protected from the outside air, are not shown, since the devices in question are already known per se as part of thermal welding technology.

The required energy is supplied via a reversing device 32, which transmits to the shut-off pliers the energy pulses which it receives from the generator. The locking pliers are not shown, but are inside the cover connected to the ten conveying devices 26.

The transfer of the respective decks takes place in such a way that the path of both conveying devices 25 and 26 is such that a kinematic similarity is achieved which prevails throughout the part where the upper and lower parts 25 are geometrically similar and synchronized.

It should be noted that only in this part does the complete adaptation take place with the covers I, II, III, IV and V and the corresponding clocks 11, 12, 13, 14 and 15 overlapping as shown in Fig. 1.

The clocks are opened in the reverse order, i.e. the respective lids are removed, the tracks of the conveying devices 25 and 26 being separated from one another in succession.

In addition, it can be seen from Figure 1 that the clocks 35 are always inverted, i.e. they open upwards, above and below a kinematically identical part.

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It can be seen from the part above that the bag 119 is fed to the clock I and that the bag 118 was fed to the clock 2 in advance in the same way as the bags above it were fed to the previously passed clocks.

In this part of the track above, it can be seen that the bag 116 inserted into the clock 4 is filled, for example by means of a funnel 33. Similarly, in the bag 115, which is pushed into the clock 5, the product tii-10 is compressed by a pressing device 34. In addition, it can be seen that a vibrating device is arranged below the clocks 4 and 5 to optimize the supply of product to the bags 115 and 116. In addition. calculating the amount with a separate device marked 15 with 36 numbers.

Device 37 causes the bellows 113 to be prefabricated. From the bag 112, the cutting device 38 cuts off an unnecessary part after the previous formation of the side bellows. Of course, the work that takes place in the area above can also be different, depending on the technical requirements of the packaging process.

Similarly, referring to Figure 1, but now with a kinematically identical area below 25, it should be noted that the already closed bag 102 inserted into the watch 18 is folded in the upper extension, as symbolically indicated by the arrow in the inverted part.

With the bag 101, which is inserted into the clock 19, the plate 30 39 performs the flat pressing of the extension already connected to the body of the bag, whereby the bag becomes a completely square package. The device 40 forms an adhesive tongue in the package 100 for attaching a flat-pressed extension to the upper end of the square-shaped package. Finally, the puller 41 35 removes the package 99 from the clock 21 and places it on the same groove on the discharge belt 27 as the packages 98, 97, 96 and 95 already placed.

It can further be seen from Figure 1 that each forming mandrel of the star 42 is provided with a puller 45, 5 whose vertical movements take place against the compression of the fixed cam 44, said cam being formed downwards in a manner corresponding to the clock 1 below it.

As they pull down, the pullers 45 pull the bag 119 out of the mandrel and move it to the clock 1 connected to the conveying device 25 below.

The mandrel from which the bag 119 is pulled is thus free to receive the film 124, which is pressed down by the rod 46 before the cutting device 47 cuts across the film.

15 The flexible material used to make the bags is unwound from a roll 43.

In Fig. 1, reference numerals 125, 126, 127, 128 and 129 show the areas which are successively cut into separate films which are wound around the mandrels to be shaped into bags. Figure 1 also shows the rotation of the films 123, 122, 121 and 120 around the mandrels of the star 42. The various details involved in the complete manufacture of the bags are not presented here, as the corresponding technology is part of a technology already disclosed.

It can be seen in detail from Figure 2 that after ten feed steps of the cutting step, the mandrel presses down the film 134 and not the film 124, which has already moved ten steps as a bag already fed filled, vibrated and sealed into the corresponding chamber 20, which also checks its filling amount. .

It should be noted that the films still to be cut are indicated in Figure 2 by reference numerals 134, 135, 136, 137, 138 and 139 and that they come out of the roll 43.

The same phenomenon considered in Fig. 2 also occurs in Fig. 35, but after a second, seven-step input.

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In fact, the numbering of the bags passing by is thus seven units.

It should be noted that in all three figures, the same bag is always fed to the same clock and that this pus-5 si remains in a square package from the beginning of the cycle until its final removal (41).

The clocks from which the packets were withdrawn, for example the clocks shown in Fig. 1, denoted by reference numerals 21, 22, 23 and 24, are sequentially fed with other bags.

It can be seen from Figure 2 that the clocks 21, 22, 23 and 24 that were empty in Figure 1 now have stable bags 123, 122, 121 and 120.

Figures 1, 2 and 3 show the flow of the technical process 15 in which the bag is never removed from the watch.

This retention of each bag on the watch shows a high degree of machine reliability, especially when the bags are made at high speed from a very inexpensive, 20 flexible material that is difficult to handle, which is necessary given the requirements of modern vacuum packaging equipment and controlled air packaging equipment.

In addition, it should be noted that the very typical retention of the same bag at the same clock throughout the manufacturing process, as shown in Figures 1, 2, 3, 14, 15, 16 and 18, also when handling pre-formed bags from the packing belt 49 shown in Figure 15 and also when handling bags already filled by a vertical packaging machine 48 - see Fig. 17 - still applies.

It will be appreciated that machines for vacuum packing or controlled air packing may be applied in practice in accordance with the combinations required by the invention disclosed herein, involving technical solutions, building materials, construction of various parts and actuators.

II

il 85003 design, determination of proportions and sizing, adapted to the materials to be packed and to the shape of the bags and materials of which the packages are composed, whilst respecting the principle that either empty or pre-filled bags are fed directly to watches which are arranged in a ring conveyor connected to a shorter transport device for the decks above it, each of the two separate conveyors having at least one part with an identical geometric shape and, under conditions of kinematic similarity, their complete interconnection by superimposing each separate downward direction. the sealing level of the lid and the sealing level of the corresponding upward-pointing clocks passing below it, thus providing an airtight closing function so that the bags can be closed by means of a vacuum or controlled air; with.

In addition, the invention encompasses all machines for vacuum packaging and machines for controlled air-assisted packaging, in which both empty and full bags are fed directly to clocks which are controlled accordingly and which remain stable, whereby the bags are handled in a complete order and they are not finally removed until the end of the whole technological process to be transferred to the conveyor belt for removal.

Furthermore, it is clear that the scope of the invention includes all vacuum or controlled air-based packaging machines with clocks and lids, which are always fixedly connected to two separate ring transport devices and which have a combination characteristic mainly of kinematic devices and the like described and outlined above and set out in the following claims.

Claims (8)

A machine for packaging a product in a bag under vacuum or in a controlled atmosphere, the machine comprising supports (1-24) and lids (IX) arranged in two separate annular transport devices (25, 26), annular webs are located in two different horizontal pianos on top of each other, characterized in that the substrates are formed as bells (1-24), so that at the beginning of the working stage, the buses can be inserted directly into the clocks, where they remain constant throughout the technical process phase. 2. Machine according to claim 1, characterized in that the underlying transport device 15 (25) is longer and provided with several clocks (1-24) with the same spacing and an upturned sealing surface. Machine according to claim 1 or 2, characterized in that the above conveying device (26) is shorter and provided with a smaller number of lids (IX) with the same spacing and a step distance identical to the clocks (1-24), however, their sealing surface is facing down. Machine according to any one of claims 1 to 3, characterized in that both conveying devices (25, 26) preferably through an at least one such section in which the superposed parts are identical and where, under unchanging conditions and under the same kinematic conditions , a complete joint is achieved by placing the sealing surface of each individual downwardly facing lid (IX) and the sealing surface of the corresponding, up to passing, upside down clock (1-24) on top of one another, thereby providing an airtight closure function. Machine according to any one of claims 1-4, characterized in that along the section where both of the ice transport devices (25, 26) provide the invariable kinematic joint between the covers (1-24) and the clocks (IX), it is ensured that the sealing surfaces which in each case are adapted to each other lie exactly on top of each other, the machine being arranged to carry out the pumping and to any supply of noble gas connecting functions before the closing function, protected from the outside air, in the full passages which in this case is kept airtight closed inside the clocks (1-24). Machine according to any of claims 1-5, characterized in that it is arranged for closing the clocks (1-24), ie. for conveying respective lids (I-X), kinematically, in such a way that the paths of each of the transport devices (25, 26) located on top of each other become narrower, so that an invariable kinematic similarity is achieved. Machine according to any of the preceding claims, characterized in that it is arranged for opening the clocks (1-24), ie. for removing the corresponding cover (I-X), kinematically, so that the two transport devices (25, 26) located on top of each other readily from each other, ie. that the state of unchanging kinematic similarity is abolished. Machine according to any one of the preceding claims, characterized in that it is intended for moving the clocks (1-24) without the covers, ie. open at the top, upstream of the kinematic similarity section, to enable the technical work stages to be carried out in a certain order in the always stable in the same clock (Ι-ΒΟ 24), where they are processed in the upstream direction and completed in the direction downstream.