RS59778B1 - Film tube packaging machine - Google Patents

Description

Description

This invention relates to a machine for packaging foil covers, which includes two transport devices with two corresponding molding molds in the form of portals, which are intended to redirect the foil strip, delivered to the molding mold, in the transport direction of the corresponding transport device so that behind each molding mold, in the transport direction, one foil cover is formed in the form of a tunnel. At the same time, two transport devices are designed to move the groups of consumables, which are in them and which need to be packed, especially products in sheets (tissue), with a previously determined forward speed, through a suitable molding mold into a suitable foil cover in the form of a tunnel. The foil cover moves at the same forward speed as the consumable, whereby the two transport devices are placed along a common plane, parallel to each other. Both devices are designed so that the corresponding side edge parts of both foil strips, from which two tunnel-shaped foil sleeves are formed, pass through the processing part located between them.

Document US 5,255,495 is known from the state of the art. In addition, it is generally known that consumables are products for everyday use, of lesser value. Consumables must be packaged appropriately before they reach the stores. Typical representatives of consumables are products in sheets (tissue), especially goods in rolls such as kitchen towel or toilet paper rolls, which are packed as grouped rolls in foil packages, for example in packages of 1 x 3, 1 x 4, 2 x 3, 2 x 4, 2 x 5, 3 x 3, 3 x 4, 3 x 5 or more rolls. The usual diameter of the roll is, for example, approx. 10 - 15 cm, with the usual length of approx. 10 cm or even 25 cm.

Products in sheets, however, also include other hygiene items, such as folded products and/or products stacked one on top of the other, such as paper tissues or napkins, which must be packaged in a group in an analogous way, before reaching the final store. Products in sheets are consumables with really low production costs compared to other goods, so it is necessary to minimize the consumption that occurs during their packaging.

In order to enable the end consumer to handle the products in sheets, packed in this way, in a particularly simple way, as a rule, a carrying handle is provided as an integral part of the foil package, with which it is possible to carry the foil package with the rolls packed in it in a particularly simple way. It should be taken into account here that such a carrying handle with a suitable carrying opening for safe handling of the foil package must be made stable in a suitable manner, so that tearing does not occur. The double-reinforced foil material is often not enough here.

In addition to products in sheets, consumables also include a large number of other consumables, for example foodstuffs, pre-packaged in cardboard or packaging, filled with some beverage, such as tetrapak. Consumables do not refer to bulk goods, which are not prepackaged, such as granulated sugar, powdered milk, and the like.

According to the state of the art, groups of consumables ie. products in sheets, are inserted during the packaging process into a suitable, pre-made foil package, which is then joined by welding. Here, there are inevitable remnants of parts of the foil, where the remnants after welding are cut off and thrown away as waste.

In addition to throwing away the material of these remains, there is also the disadvantage that it is difficult and demanding to pack them in pre-made foil packages that depend on the quality of the foil, where the worker on the machine has to refill the packaging himself.

Starting from the state of the art, the task of this invention is to propose a device and a procedure, which enables simpler packaging of consumables in foil, especially products in sheets, and which does not result in the packaging foil being thrown away.

This task is solved by a machine for packing foil covers of the type described at the beginning. It is indicated by the fact that in the processing part, located between two foil covers in the form of a tunnel, the side edge parts of the foil strip, shaped into foil covers in the form of a tunnel, are placed in at least two layers of foil, so that overlapping of the edge parts of one foil strip with the edge parts of another foil strip is avoided with at least two layers of foil, made in the processing part, and that the foil layers are folded over the foil cover in the processing part with a welding device welding.

The basic idea of the invention is to use the remains of the foil as the starting base for the carrying handle. In order to provide the necessary increased stability, according to the present invention, it is envisaged to form two parallel foil covers from one strip of foil, with their side edge portions coming into contact in a common processing area, which then forms the starting base for a suitable carrying handle.

Depending on the setting of the edge parts of both foil strips, which come into contact in the processing part, it is possible to achieve a different number of foil layers in the respective foil layers, without overlapping the foil layers of the different foil strips. On the one hand, as many layers of foil are needed to ensure a sufficiently high stability of the carrying handle made from them. On the other hand, however, it is necessary to avoid the unnecessary consumption of material, caused by a large number of foil layers.

Exactly two edge portions of each foil strip meet in the processing section, if each foil strip is used to form one foil sleeve. At the same time, at least two layers of foil are formed from one strip of foil so that the layers of foil are formed by at least overlapping two edge parts with other parts of one strip of foil. According to this invention, it is not allowed that the edge part of one foil strip overlaps the edge part of another foil strip. However, within the concept of the present invention is the overlapping of the edge part of the foil strip with another part of the same foil strip or with another edge part of the same foil strip.

The principle minimum number of layers is two, whereby, in the event that there are two strips of foil, two edge parts of the corresponding strips of foil meet in the same layers of foil, ideally in such a way that they come into contact with each other, whereby the contact edges of both layers are laid one above the other, transverse to the transport direction, in order to avoid overlapping. The amount of two layers of foil in most cases, however, will not provide sufficient stability for the carrying handle, unless the thickness of the foil strips is high enough. This would then ultimately result in a large consumption of foil packaging material, which would then be more stable than is normally necessary. At this point, however, attention should be drawn to the principle variant in which the forming molds are shaped so that the corresponding side edge parts of the foil strip from which the two foil covers are formed in the form of a tunnel, pass through the processing part located between them, and that it includes exactly two layers of foil.

In addition, it is envisaged that the foil layers are welded together in the processing section. Therefore, the foil layers of both foil packages are welded with the welding device in the processing section, preferably simultaneously.

The possibility, according to this invention, to improve the stability in the area of the carrying handle consists in the fact that it is possible to deliver, at least in some parts, another reinforcing foil, as an additional foil, to the processing part, by means of a delivery device. Independently of the at least one foil strip, in this variant it is provided that the additional foil is delivered, for example, from above or below to the processing part and is suitably welded with at least two foil layers of at least one foil strip. In this way, it is ensured that the number of foil layers at least in the area of the carrying handle is three. In doing so, the reinforcing foil can be placed, for example, as a strip of foil, which has approximately the width of the processing part, on the already formed edge parts of the foil cover in the processing part. This is done, however, before welding. The reinforcing foil can be laid as a cut of the foil or as a piece of foil, or only in certain parts, especially in the area of the carrying handle, and that with a delivery device. This reduces the material consumption of reinforcing foils. A preferred embodiment of the foil sleeve packaging machine provides that both molding dies are shaped so that the edge portions of the foil strip are bent in the processing section and that at least two bent edge portions form at least two layers of foil.

The innovative idea of bending at least two edge parts is that the two edge parts, which are opposite each other, form not just one, but two layers of foil. With this variant, therefore, a total of at least three layers of foil are foreseen in the processing part. If four edge parts are folded from two strips of foil, then, therefore, a total of four layers of foil can be formed.

The next variant of the setting of the edge parts when applying one strip of foil consists in the fact that each of the edge parts of the foil strip forms a complete layer in the processing part, which results in a total of three or four layers of foil. Depending on the thickness of the foil, this could already ensure the stability of the carrying handle, which is higher than necessary. By additional bending of the edge parts in the processing part, it is therefore possible to create more than four foils.

When applying two strips of foil and setting two edge parts of foil strips as a corresponding complete layer of foil, as well as other two edge parts of foil strips in one common layer of foil, it is possible to reach three layers of foil in the common part for processing. In the case of setting two edge parts of the foil strip in the same foil layer, there is a tendency to reduce the free space between the edges as much as possible. Overlapping of the edge portions of different foil strips should be avoided according to the present invention. Accordingly, the contact edges and the free space of the foil strips of different layers are located above each other. Homogeneous density of the processing part is achieved when each layer has the same width in the processing part.

The key element of the machine for packing foil sleeves according to this invention are both molding molds, which, ideally, are continuously supplied laterally with a corresponding strip of foil that is redirected in the transport direction so that a foil sleeve is formed on each molding mold in the form of a tunnel, whereby the corresponding edge parts of at least one foil strip reach one common processing part, which is located between the foil sleeves. It is preferable that the vertical height of the processing part is half the height of the package, so that the carrying handle is in the middle, and that the package with consumables, i.e. products in sheets in it, can be carried without bending the carrying handle.

A molding die can be compared in the broadest sense to a gantry, the internal cross-section of which roughly corresponds to the cross-section of the foil package to be produced. During the packaging process, the film is rotated from the outside around the forming mold so that a suitable cover of the film is formed on its internal cross-section, which ideally moves continuously in the transport direction of the transport device.

The continuous movement of suitable covers made of foil is achieved by the fact that groups or formations of consumables, i.e. products in sheets, which need to be packed, are moved through the opening of the forming mold, which looks like a portal, by means of a pusher or carrier, whereby the transport device, behind the forming mold, includes belt conveyors that are located above and below the foil covers and move in synchronization with them, and between which consumables are inserted, i.e. products in sheets, moved by the appropriate forming dies and placed now in the appropriate foil covers, so that they are transported accordingly together and synchronized with the foil covers.

The transport device can consist of several component transport devices, connected one after the other, for example from belt conveyors, whereby additional carriers can usually also be provided, in order to, for example, group consumables or products in sheets.

Such supports, as a rule, can only move up to the front edge of the forming mold. In order to create the necessary distance between the groups of consumables, i.e. the products in the sheets, a cover plate with a driver in front of the molding mold is optionally provided. The cover plate with the separator located at the back is responsible for creating the necessary distance between both formations before inserting the next group or formation, so that cross welding can be carried out. This also prevents the last consumable, that is, the product in sheets in a group or formation, which is in the forming mold, from falling out at the back or from being wrapped too loosely by the foil cover.

Continuous supply of foil tape from, for example, one large spare roll creates significantly less consumption than adding from specific piles with pre-made packaging.

In this way, the packaging of consumables or products in sheets is achieved, which creates very low costs and where there is no waste of foil material.

According to the design of the machine for packaging foil covers, according to this invention, two transport devices include several component transport devices, connected one after the other in the area of the corresponding molding mold in the form of a portal, where in the transport device behind the molding mold itself, two component transport devices are provided in the form of a belt, which move in synchronization above and below the corresponding foil cover in the form of a tunnel. In this way, continuous movement of the foil covers is achieved, whereby a certain group of consumables, ie products in sheets that need to be packed, is inserted between the component transport devices that transport it together with the foil cover. Component transport devices that move synchronously can be made, for example, as belts which, due to their setting from the top and bottom, can also be understood as clamping belts.

According to the next embodiment of the foil cover packaging machine, according to this invention, the integral transport devices, which are located in front of the molding mold in the transport direction, include a belt, especially a belt conveyor with suitable drive pushers, a chain transport device with suitable drive pushers or some other transport device for consumables. It is shaped so that the consumables, i.e. products in sheets, which are on the belt, are moved by a drive pusher through the forming mold and there they are handed over to the appropriate component transport devices in the form of a belt that move in synchronization, for further transport. The transport device can include multiple paths for sorting, for example, consumables or products in sheets, in the form of rolls or also in piles.

A drive pusher can also be provided in order to move the groups or formations of consumables or products in sheets, which are to be packed, with the distance between the groups in the direction of the transverse welding means that follow. In the case of material in rolls, this distance can be approximately, for example, the diameter of the roll itself. The resulting distance is a prerequisite for the subsequent cross-welding of the foil packaging.

According to the next embodiment of the forming machine for packaging foil covers, according to this invention, it includes behind the forming mold in the transport direction, a support device in the form of a belt, which can move in synchronization with the integral transport devices in the form of a belt, as a mechanical support of the part to be processed, at approximately half the vertical height of the formation of consumables, i.e. products in sheets, to be packed, for example one or more belts that move at the same time, which are at least in the region of the device for longitudinal welding in ideally made of Teflon or coated with it. This ensures that the processing part, and thus the carrying handle on the package, which on the finished package ideally includes a refined carrying slot, is located approximately in the middle so that the package can simply be carried vertically, together with the roll goods therein. A punching device for the carrying slot is usually provided in the processing section or in a segment or part of the machine which is a continuation of the film sleeve packaging machine according to the present invention.

According to a further embodiment of the present invention, the machine for packaging foil covers includes a means to sew the foil layers in the processing section. This is done, for example, by means of a counter-roll needle roller, whereby the needle roller can be made

and as a heatable needle roller. With this, the processing part can already be connected, in a stable form, which simplifies further processing in a desirable way.

According to a further variant of the present invention, the foil sleeve packaging machine includes a means such as a longitudinal welding device to weld the foil layers in the processing part, as well as a longitudinal cutting device to cut the welded processing part. Welding is done, for example, by means of one or more hot air nozzles or by means of welding forks, but other alternatives are certainly conceivable. The separation and joining of the ends of the foil, which are in the processing area, is done using the so-called "slit sealers" (welders with cutting). Thus, it is possible to laterally weld the cover packaging with consumables, i.e. products in sheets in it, as well as to separate the packaging from the cover, connected in parallel with the processing part.

According to the next embodiment of this invention, the machine for packing foil covers includes a device that performs transverse welding of parallel foil covers in the form of a tunnel, which move along a common plane, thus welding them, and the machine for packing foil covers also includes a cross-cutting device.

Means for cross-welding and device for cross-cutting can, according to the next embodiment, be moved along the transport direction, so that the distance between the front edge of the forming mold and the cross-welding, which determines the length of the package, can be adjusted. Likewise, according to this invention, it is possible to make integral transport devices, i.e. belt conveyors, between which groups of consumables, i.e. products in sheets, which need to be packed, are temporarily inserted, from two or more parts so that they can be folded up or down. Thus, by closing one part or segment of the corresponding belt conveyor, a place is created into which the transverse jaw with the transverse welding device and the cutting device enters. In this way, the packaging length of the foil cover packaging machine according to the present invention can be shortened or adjusted as needed.

When cross-welding, it is preferable to make two parallel welded seams at the same time, one for both packages that go back, the other for the packaging formations that are still between the clamping bands. The cross-cutting device separates the two packaging formations between the cross-welded seams, for example, it can be a pneumatically driven toothed knife. This makes it possible to cross-weld the sleeve packaging at the ends with the roll goods in it, as well as to separate it from the sleeve packaging that is behind it, that is, from the sleeve packaging formations. It can prove to be a particular advantage if the forward axial movement of the transport devices is stopped during cross-welding and/or cross-separation, which corresponds to cross-welding

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in time. However, it is also possible to carry out transverse welding during axial forward movement, in this case at a reduced speed of the transport devices.

Before or after the transverse separation of the packaging formation, a suitable slot for carrying is stamped with a stamping device so that a handle for carrying is carved into the rest of the material by this procedure. Here, it is expedient that the packaging packages themselves are previously taken over by a drive unit with clamping bands in order to guarantee safe positioning during stamping. For this case, it is foreseen that the packaging formations include the same length on both transport devices.

According to the next variant of the machine for packing foil covers according to this invention, both transport devices include, independently of each other, one, two or three transport paths for each row of consumables, i.e. products in sheets, in the form of rolls, piled up or bent. This enables the production of packages of different sizes on the same machine for packaging foil sleeves, in each case using a common processing part between the packages, of equal axial length, in order to make a handle from it.

According to the following way of shaping the machine for packaging foil covers according to this invention, it is also intended to pack groups of consumables, i.e. products in sheets in the form of rolls, with the appropriate direction of the rotation axes of their rolls, transversely in relation to the transport direction. This shows the advantage that by directing the consumables i.e. products in sheets in the upper and lower parts on the axial ends, transversely in relation to the direction of movement, rounded parts are formed, which facilitate the entry of grouped consumables i.e. products in sheets through the appropriate molding mold, as well as the entry of rolls into the foil sleeve located behind it. The cross-welding of the foil packaging is thereby also facilitated in a desirable manner.

At this point, it is necessary to explicitly mention once again that the machine for packaging foil covers according to this invention, according to its principle, is certainly suitable in principle for packaging upright consumables, i.e. products in sheets in the form of rolls, with an upright direction of the rotation axis, as well as consumables, i.e. products in sheets that are not in the form of rolls.

According to the next embodiment of the machine for packaging foil covers according to this invention, it includes a turning device, which turns consumables, i.e. products in sheets in the form of rolls, with the direction of the rotation axis, for example, along the transport direction or, also, vertically transversely in relation to the transport direction. In this way, consumables, i.e. products in sheets, which, conditioned by technical production, are made with the direction of the rotation axis along the transport direction, can be rotated transversely from it. It is desirable that such a device includes a twister and/or a rotating gripper with an open part slightly larger than the diameter of the consumable itself, i.e. the product in sheets in the form of a roll.

According to the next embodiment of the machine for packaging the foil cover according to the present invention, it includes a separation device that separates, for example, some already pre-packaged starting material, especially cut rolls. The separation device comprises star-shaped separation edges or rails that rotate around a common pivot axis oriented transverse to the transport direction. The cut rolls move, coming for example from a saw, on four paths to the separation device and here they are densely grouped into a formation that can be several meters long. After their separation, the rolls are delivered to the next step of the packaging process. For longer rolls, such as for example kitchen towels, other types of separating devices are also conceivable or necessary.

According to a further embodiment of the film sleeve packaging machine design according to the present invention, the two transport devices are basically completely symmetrical. All components of both transport devices, placed along the transport direction, are ideally at the same axial height, for example two individual or one common transverse jaw with a welding or cutting device or, also, both forming molds.

The task according to this invention is also solved by the method of packaging consumables, especially products in sheets, with a machine for packaging foil covers and the method according to claim 1, i.e. claim 17.

The advantages of the present invention arising therefrom have already been previously explained. Other steps in the procedure that can be continued are the transverse separation of the resulting packaging formations from the cover, and the stamping of a suitable slot for carrying from the rest of the foil, formed by the welded overlapped part.

Other desirable implementation possibilities should be taken from other requirements.

On the basis of examples of implementation, presented in the drawings, it is necessary to explain in more detail the other ways of implementation and other advantages of this invention.

The following are shown:

Sl. 1 example of the first machine for packaging foil sleeves,

Sl. 2a-d arrangements of the foil sleeve with the processing part with one supplied strip of foil, not according to the present invention,

Sl. For the settings according to the present invention, Fig. For-s; settings that are not according to this invention fig. 3d-e, foil sleeve with processing part with two supplied foil strips,

Sl. 4 example of foil packaging with products in sheets,

Sl. 5 example of another machine for packing foil covers,

Sl. 6 example of a third machine for packaging foil sleeves,

Sl. 7 example of the fourth machine for packing foil sleeves,

Sl. 8 example of the fifth machine for packaging foil covers,

Sl. 9 example of the sixth machine for packing foil sleeves,

Sl. 10 example of the seventh machine for packaging foil covers, as well as

Sl. 11 example of the eighth machine for packaging foil sleeves.

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Figure 1 represents an example of a first machine 10 for packaging a foil cover in a schematic view from above. Two molds 24, 26 for forming in the form of a portal, correspond to two devices 12, 14 of the belt conveyor, which are located parallel along the common plane. On each of the transport devices 12, 14 are placed in the transport direction 20, 22 in front of the mold 24, 26 for forming the corresponding group 16, 18 of products in sheets, which are to be packed, in this case groups of 2 x 5 rolls. Both devices 12, 14 of the belt conveyor are suitable for a width of two or three rows of products in sheets.

Transport devices 12, 14 are intended to move groups 16, 18 of products in sheets, which are in them, through molds 24, 26 for shaping into a suitable sleeve 40, 42 made of foil in the form of a tunnel, which represents the starting basis of the packaging. Both molds 24, 26 for shaping are shaped so that they redirect the first strip 28 of foil delivered from the side or from above so that in the transport direction 20, 22 after the molds 24, 26 for shaping, two covers 40, 42 of foil are formed in the form of a tunnel. Alternatively, both molds 24, 26 for shaping are shaped so that they redirect the side-delivered first strip 28 of foil, as well as the side-delivered second strip 30 of foil so that in the transport direction 20, 22 after the molds 24, 26 for shaping, two covers 40, 42 of foil are formed in the form of a tunnel. Furthermore, it is possible to deliver the reinforcing foil 31 to the part 36 for processing, i.e. to the part between the two molds 24, 26 for shaping, with a device for delivery, which is not represented in this picture. This part usually has a width of 60 mm to 140 mm, and in individual cases this dimension can be larger or smaller. Preferably, the reinforcing film 31 is narrower than the width of the processing part, with a free space that allows the insertion of the reinforcing film 31 into the processing part 36 without problems.

The reference numbers 32, 34 mark the corresponding groups of products in the sheets, which are already in the tunnel-shaped foil covers 40, 42, which serve as the starting basis of the package and which in the picture are already closed with a transverse welded seam along the entire length at their right axial end. In the part 36, 38 for processing, which is located between covers 40, 42 made of foil in the form of a tunnel, the width of which is generally determined by the mutual distance 48 between the transport devices, the side edge parts of the foil strips 28, 30 of foil, shaped into covers 40, 42 made of foil in the form of a tunnel, are placed in multiple layers of foil. When covers 40, 42 are formed from two foil strips 28, 30, the setting of the edge parts in layers follows so as to avoid overlapping the edge parts of one foil strip 28 with the edge parts of the other foil strip 30.

The processing part 36, 38 is also provided to carry out the welding of the foil layers so as to thereby ensure the side connection of the foil covers 40, 42. The processing part 36, 38 includes, for example, three layers of foil tape 28. With three welded foil layers, a good mechanical durability of the welded three-layer foil is achieved in the processing part 36, 38 so that it can be further divided in order to make a suitable handle for carrying the packaged group of products in sheets by stamping the carrying slot. A suitable punching device is usually located in the processing section 36, 38 or in one of the following segments.

Fig. 2a represents a first arrangement 50a of a foil sleeve 56a, 58a, not according to the present invention, with the processing part 60a having only one strip of foil and two layers of foil in the sketch as a cross-sectional view. The two rows of products in sheets 52, 54 to be packed are placed parallel to each other, on a suitable transport device which is not shown. Each row of products in the sheets 52, 54 to be packed is surrounded by a corresponding tunnel-shaped foil cover 56a, 58a, both foil covers being formed in a suitable manner from shaped strips of foil. The two side edge portions of the foil strip meet in the processing portion 60a located between the tunnel-like foil covers 56a, 58a. In this example, there are a total of two complete layers of foil, where in the picture the upper layer of foil is formed by two side edge parts that touch each other. The contact point is ideally positioned centrally on the machining surface 60a in this figure. The contact point can, however, also be placed to the left or right of this center, as long as the foil layer itself is complete. The lateral displacement of the contact point towards the middle, i.e. transversely in relation to the transport direction, can be for example 60mm, while the width of the part to be processed should be determined so that two carrying handles can be cut from it, side by side, so for example between 100mm and 140mm. By welding the part 60a for processing, such a stable foil residue is formed that it can be

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be used for packing the product in sheets after splitting along the transport direction and after punching the carrying slot as a carrying handle.

Fig. 2b represents another arrangement 50b of the foil cover 56b, 58b, which is not according to the present invention, with the processing part 60b having only one strip of foil and three layers of foil in the sketch as a cross-sectional view. Here, too, it is necessary to pack the products in sheets 52, 54. Unlike the first setting 50a, two layers of foil are formed by the side edge parts of the foil strip, by folding each edge part once and thus creating a second layer. Folding or shaping of the foil strip is done with molding molds, which are not presented in this picture, or before the molding mold in the section for supplying the foil strip. Overlapping there can be implemented relatively simply.

Fig. 2c represents a third arrangement 50c of the foil cover 56c, 58c, not according to the present invention, with the processing part 60c having one strip of foil and three layers of foil in the sketch as a cross-sectional view. Here, too, it is necessary to pack the products in sheets 52, 54. The bottom and middle layers of foil in the picture are formed by one strip of foil, in the same way as shown and explained in more detail in the first setting 50a in Figure 2a. The upper, and therefore the third layer of foil is formed by a screw 59c of foil and can be introduced by a conveying device, which is not represented in this picture, into the part 60c for processing, that is, it can be applied to the foil layers of the foil strip.

Fig. 2d represents a fourth arrangement 50d of a foil sleeve 56d, 58d, not according to the present invention, with a processing part 60d with one strip of foil and three layers of foil sketched as a cross-sectional view. Here, too, it is necessary to pack the products in sheets 52, 54. In this variant with three layers of foil, both edge parts are made to be long enough that one edge part forms its own layer of foil.

Fig. 1a represents a fifth arrangement 70a of a foil sleeve 76a, 78a according to the present invention, with the processing part 80a having two strips of foil and three layers of foil in the sketch as a cross-sectional view. Here, too, two rows of products in sheets 72, 74, to be packed, are placed parallel to each other on a transport device that is not

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presented here. Each row of products in sheets, to be packed, is surrounded by a foil cover 76a, 78a in the form of a tunnel, which is formed by a strip of foil, shaped in a suitable way. The side edge portions meet in the processing portion 80a located between the tunnel-like foil covers 76a, 78a. In this example, there are three complete layers of foil in the processing part 80a, which visibly increases the stability of the manufactured carrying handle. The lower foil layer in the picture is formed by one edge part of both foil strips, whereby the edge parts in the foil layers are placed right next to each other, but do not touch each other. The other two foil layers are formed from the remaining two edge parts of both foil strips. Therefore, the remaining edge parts are folded in a manner as explained in more detail in Figure 2b. The free space between the contact points between the edge parts of the film strip that are located above each other, are located above each other. Overlapping of the edge parts of the different foil strips is successfully avoided in this way.

Fig. 3b represents a sixth arrangement 70b of a foil sleeve 76b, 78b according to the present invention, with the processing part 80b having two strips of foil and four layers of foil in the sketch as a cross-sectional view. Here, too, it is necessary to pack the products in sheets 72, 74. In this variant, all four edge parts of both strips of foil are folded so that a total of four layers of foil are formed.

Fig. Zs represents the seventh arrangement 70c of the foil cover 76c, 78c according to the present invention, with the processing part 80c having two strips of foil and four layers of foil in the sketch as a cross-sectional view. Here, too, it is necessary to pack the products in sheets 72, 74. In this setting, both lower foil layers are formed from four edge parts of both foil strips, whereby two edge parts of different foil strips form one foil layer. The edge parts of the foil strips are placed in such a way as to avoid overlapping the edge part of one foil strip with the edge part of another foil strip. This means that in both foil layers the contact points, where the edge parts of the different foil strips almost touch, are placed vertically above each other. The third layer of foil is a strip of foil 79c, which is fed through the conveying machine - which is not represented in the picture - into the part 80c for processing. The foil is generally reinforced with foil strip 79c after welding in the processing portion 80c so that both foil strips can be made thinner as appropriate. This also saves on material in a desirable way. It is certainly conceivable within the framework of an innovative idea to omit lane 79c

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foils. In that case, it is necessary to make the remaining two strips of foil stronger, taking into account all the criteria. The advantage of this lies in the simplified design of the machine for packaging foil sleeves.

Figure 3d represents an eighth arrangement 70d of a foil sleeve 76d, 78d, not according to the present invention, with a processing part 80d. Two strips of foil are used to make covers 76d, 78d of foil, the edge parts of which, after being directly laid over the products in sheets 72, 74, are immediately welded in the manner shown in part 80d for processing. In this alternative according to the present invention, the construction of a carrying handle is deliberately omitted. This type of packaging of products in sheets is used for products in sheets with vertical or horizontal rolls, so for example with toilet paper that is wrapped around a threaded roller. Products in sheets with upright rolls are also packed, which are designated as standard packaging. In this case, the longitudinal welding is carried out in the processing part 80d, on the edge parts of both foil covers 76d, 78d, which overlap in the vertical direction one above the other. For this purpose, a suitable welding device is equipped with two welding devices that allow the edge parts of both foil sleeves 76d, 78d to be welded simultaneously in the foil sleeve.

Fig. 1e represents a ninth embodiment of a foil sleeve 76e, 78e, not according to the present invention, with a processing portion 80e. Two strips of foil are used to make covers 76e, 78e of foil, the edge parts of which, after being directly laid over the product in sheets 72, 74, are immediately welded in the manner shown in the processing part 80e. This is carried out in a suitable manner as already described in Figure 3d. This type of packaging of products in sheets is used for products in sheets with vertical or horizontal rolls. The essential difference compared to figure 3d is that the first 77 and the second basic form 79 for the carrying handle are made from the covers 76e, 78e of the foil outside the part 80e for processing. In Figure Ze, the first basic form 77 is made from a corresponding foil cover 76e in the center of the left side of the left products in sheets 72, while the second basic form 79 is made in the middle of the right side of the right products in sheets 79 from a corresponding foil cover 78e. Here it is provided that either the forming molds are made so that the corresponding strip of foil in this part is properly bent into the basic form with two layers of foil or that the bending of the strip of foil into the basic form is carried out

1

but before delivering the strip of foil to the molding mold itself with a bending device. After welding the basic form itself, as well as after stamping the carrying handle itself according to the basic form with appropriate devices, the carrying handles 77, 79 are created in an appropriate manner.

Fig. 4 shows in sketch 90 a foil package 94, produced according to the present invention, with a group of products in sheets 96, packaged therein, in this case tissue or paper products. The rest, shown in the upper part of the picture, was part of the 92 machining parts during the packaging process. A slot 98 for carrying is punched into the rest, which by removing the punched part in Figure 4 is shown as a carrying handle or as a carrying opening.

Figure 5 shows an example of another machine 100 for packaging foil sleeves in a schematic top view. A section 102 for processing is formed between the groups of already packaged products in sheets. A sewing device, not shown, is intended to sew the processing part before welding with a welding device not shown, in order to mechanically stabilize it as soon as possible.

Figure 6 presents an example of a third machine 110 for packaging foil covers in a three-dimensional view. On the two component transport devices, represented in the left half of the figure, with a carrier, in this case two belt conveyors with two paths with one push drive, there are products in sheets 118 to be packed. They are collectively moved at a forward speed, determined by the pusher, through the corresponding molding die 112. The molding mold 112, on the other hand, is supplied laterally with a suitable strip of foil 114 via a suitable guide sheet, which is, for example, taken from a larger spare roll.

With the appropriate mold for shaping the strips 114, the foil is reshaped and redirected so that two foil covers in the form of tunnels are formed as a starting point for packing groups of products in sheets 118. Above and below the foil covers in the form of tunnels, several component transport devices 120 in the form of tapes are provided as an integral part of the transport devices themselves. They move at a forward speed corresponding to the forward speed of the pushers that move the sheet products through the forming dies 112 .

1

The fork 116 for transverse welding extends transversely in relation to the transport direction over both transport devices, i.e. the respective foil covers. As an alternative to one cross-welding fork 116 for both transport devices, two cross-welding forks can be provided, i.e. one on each transport device. The cross-welding fork 116 includes in this case means for cross-welding the foil covers in the form of a tunnel so that they can be closed at their ends. A cross-welding device, also provided on the cross-welding fork 116, is provided to separate the cross-welded packages.

It can be clearly seen in the drawing that the integral conveyor devices 120 in the form of a belt consist of two belt conveyors, connected one after the other, whereby the corresponding rear belt conveyor can be folded up or down. In the closed state, it is possible to move the fork 116 for transverse welding in the transport direction, move it closer in the direction towards the mold 112 for shaping. In this way, packages of different sizes can be realized.

Figure 7 shows an example of a fourth machine 130 for packaging foil covers in a three-dimensional view. It basically corresponds to the foil sleeve packaging machine shown in Figure 6, except that it is shown here from a different perspective.

Again, multi-path integral conveyors 136 are shown, with the carrier as integral parts of respective conveyors holding groups of sheeted products to be packaged, which are transported through respective forming molds 132 . A suitable strip of foil 134 is delivered to the molding molds 132 laterally, which is transformed into a sleeve in the form of a tunnel by the molding molds. In the part behind the mold 132 for shaping, the upper and lower integral transport devices 138 are also shown, which support from above and below the groups of products in sheets to be packed, in the sleeve packaging in the form of a tunnel, so as to provide an auxiliary act of stabilization that maintains their shape until the final welding of the sleeve packaging.

2

A Teflon belt, not shown, at the height of the longitudinal welding device, also not shown, is intended to support the processing part from below. Using Teflon as a material in a desirable way avoids sticking of the welded material. Without such a protective factor of the ends of the film, the film could be stretched under certain circumstances, if it were transported with only the film cover and the product in the sheets in it.

Figure 8 shows an exemplary fifth foil sleeve packaging machine 150 in a three-dimensional view. Here, in addition to the core of the foil sleeve packaging machine, shown in the left half of the picture, other components are also shown. On the belt conveyor with multiple paths, there are several rolls 152, whose rotation axes themselves, conditioned by technical production, move parallel to the transport device.

For each path of the rolls 152, a separation device 154 is provided with separation means, arranged in the form of stars, by means of which the cut rolls 152 are separated, their orientation thereafter being either vertical or longitudinally horizontal. In the following, the separated rolls or products in sheets are handed over to the conveyor.

The turning device 156 is intended to turn the separated product in the form of rolls in the form of a rotary gripper, the direction of the axis of rotation of the product in the sheets now being transverse to the direction of transport. Based on the design of the turning device, it is able to turn in the desired direction the sheet products with any orientation, where the sheet product does not necessarily have to be in the form of a roll.

Next, the turned product in sheets is transferred to the multi-path belt conveyor 160, which should be considered as an integral conveying device of the entire conveying device. By means of a drive pusher 158, groups of products in sheets, to be packed, are moved through the forming molds, where the main phase of the packaging process is carried out.

Fig. 9 is a complete view of an example of a sixth machine 170 for packaging foil sleeves in three-dimensional form, which includes a device for separating cut rolls, a conveyor with roll supports, which is not shown in detail, a slide sheet for rolls for delivering the rolls to a turning device for separated products in roll-shaped sheets, a turning device, a transport device, as well as molds for forming foil sleeves from the supplied foil strips, which form the starting basis for packaging group of products in sheets.

Figure 10 shows an exemplary seventh foil sleeve packaging machine 180 in a three-dimensional view. And here - similarly to Fig. 8 - apart from the essential special parts of the apparatus, shown on the right half of the picture, other components are also shown, which have the same function as those in Fig. 8, which is why the same reference signs were chosen for these components. Therefore, several rolls 152 are placed on the belt conveyor with multiple paths, the rotation axes of which, conditioned by technical production, move parallel to the transport device. For each path of the rolls 152, a separation device 154 is also provided with separation means, placed in the form of stars, by means of which the cut rolls 152 are separated, and their direction, according to the embodiment of the seventh machine 180 for packaging foil covers, is such that the rotation axis of the rolls 152 is vertical. In the following, the separated rolls or products in sheets are handed over to the conveyor.

The rolls, separated by the separation device 154, are here first on the belt conveyor device 182, the belt of which moves at a speed greater than the peripheral speed of the separation means on the separation device 154. At the end of the belt conveyor device 182, viewed in the direction of belt travel, the transported rolls are transferred to the sliding sheet 184 from each path. A chain conveyor device, not shown in more detail in the figure, with product carriers operating along the belt conveyor device 182 and sliding sheets 184 ensures that the rolls are grouped into the desired formations. For this purpose, the product carriers, which are made for example as two- or three-path product carriers, are driven by a chain conveyor device at a speed greater than the belt conveyor device 182 . With such an increased speed of the product carrier, it is ensured that the chain transport device groups the rolls on the appropriate paths into the desired roll formations of, for example, 2, 3, 4 or 5 rolls per path. Two adjacent trajectories therefore ultimately give the desired sets of rolls, i.e. formations of 2x2, 2x3, 2x4 or 2x5 rolls. In the selected example, the chain transport device should transfer the rolls of product carriers to two mutually adjacent paths. A chain conveyor transports the sets of rolls to a roll turning device 190, also known as a twister, which is designed to turn each individual roll in each path in a desired direction, particularly transverse to the transport direction. Directly in front of the roll turning device, that is, at the end of the chain transport device, the product carriers move down so that the following rolls are not stopped by the product carriers. Accordingly, the product carriers are moved up again at the beginning of the chain conveyor in the area of the separation device 154 so that the formation on the belt conveyor device 182 is separated from the incoming one.

The roll turning device 190 includes carrier elements 186 having a function and mode of operation comparable to product carriers on a chain conveyor and which push the roll formations along the respective paths of the roll turning device 190 . The example chosen here does refer to rolls, but sheet products do not necessarily have to be in the form of rolls. For turning the rolls, therefore, a roll turning device 190 is provided with support elements 186 that move the rolls forward along their transport path. The rolls of each path are additionally brought into the desired position by guiding elements, appropriately shaped in the form of a fence, on both sides of each path along the transport path. In the presented example of the device 190 for turning the rolls with four paths, the rolls are turned by 90° on both left paths, that is, on both right paths, so that their axis of rotation is in a horizontal position. In addition, the rolls on the corresponding left paths of both pairs of paths in the transport direction rotate clockwise, while those on the corresponding right paths of both pairs of paths in the transport direction rotate counterclockwise. This achieves that the rolls located at the same transport height of each of the four paths form two pairs of rolls, the front sides of which touch each other, facing each other. The rolls placed in this way then move through the forming molds where the main phase of the packaging process is carried out.

2

Figure 11 is a complete view of an exemplary eighth film sleeve packaging machine 190, which includes a four-path conveyor system, a device for separating cut rolls, a belt conveyor device, sliding sheets, a chain conveyor device with a carrier fork for forming sets of rolls, a roll turning device for turning the rolls, other transport devices, and forming molds for forming foil sleeves in the form of tunnels, of one or two delivered strips of foil, which form the starting point for packing groups of products in sheets.

Callsign list

10 example of the first machine for packing foil covers

12 first transport device

14 other transport device

16 first group of products in sheets

18 other groups of products in sheets

20 transport direction first transport device

22 transport direction other transport device

24 first molding mold

26 second molding mold

28 the first foil strip delivered

30 second foil strip delivered

31 supplied reinforcing foil

32 third group of products in sheets

34 fourth group of products in sheets

36 part for processing

38 part for processing

40 first foil cover in the form of a tunnel

42 other foil covers in the form of a tunnel

46 transverse weld seam

48 distance between transport devices

and the first setting of the foil cover with the processing part with one strip of foil and two layers of foil

b second setting of the foil cover with the processing part with one strip of foil and three layers of foil

c the third setting of the foil cover with the processing part with one strip of foil and three layers of foil

d the fourth setting of the foil cover with the processing part with one strip of foil and three layers of foil

product in sheets in the form of a roll

product in sheets in the form of a roll

a foil cover in the form of a tunnel around the product in roll-shaped sheets

a foil cover in the form of a tunnel around the product in roll-shaped sheets

c foil strip

a-d parts for processing when applying one strip of foil

a fifth setting of foil cover with processing part with two strips of foil and three layers of foil b sixth setting of foil cover with processing part with two strips of foil and four layers of foil

c fifth set of foil cover with processing section with two strips of foil and three layers of foil d sixth setting of foil cover with processing section with two strips of foil and two layers of foil e seventh setting of foil cover with processing section with two strips of foil and two layers of foil and carrying handles

product in sheets in the form of a roll

product in sheets in the form of a roll

a foil cover in the form of a tunnel around the product in roll-shaped sheets

first basic form

a foil cover in the form of a tunnel around the product in roll-shaped sheets

second basic form

c foil tape

2

a-e parts for processing when applying two rolls of foil

foil packaging with products in sheets

part of the workpiece

foil packaging

leaf products

carrying slot

0 example of another machine for packing foil sleeves

2nd part for processing

0 example of a third machine for packaging foil sleeves

2 forming mold at the fourth machine for packing foil covers 4 supplied foil strip

6 cross welding forks

8 rolls

0 upper component transport device in the form of a belt

0 example of the fourth machine for packaging foil sleeves

2 forming mold at the fifth machine for packing foil covers 4 supplied foil strip

6-belt conveyor

8 upper component transport device in the form of a belt

0 cross fork

0 example of the fifth machine for packaging foil sleeves

2 sliced rolls

4 separation device

6 turning device

8 drive pusher

0 belt conveyor

0 example of the sixth machine for packing foil sleeves

0 example of the seventh machine for packaging foil sleeves

2 belt conveyor device

4 sliding sheet

6 support elements

2

roll turning device

example of the eighth machine for packaging foil sleeves

2

Claims (17)

Patent claims 1. Machine (10, 100, 110, 130, 150, 170) for packaging foil covers, which includes • two transport devices (12, 14), with two corresponding molds (24, 26, 112, 132) for forming in the form of portals, which are intended to redirect the corresponding tape (28, 30, 114, 134), supplied with molds (24, 26, 112, 132) for shaping, in the transport direction (20, 22) of the corresponding transport devices (12, 14) so that in the transport direction (20, 22) after each mold (24, 26, 112, 132) for shaping, a sleeve (40, 42, 56, 58, 76, 78) is formed from foils in the form of tunnels in the capacity of packaging, • where two transport devices (12, 14) are intended to move the groups of consumables, especially the products in sheets (16, 18, 32, 34, 52, 54, 72, 74, 118), which are on them and which need to be packed, at a predetermined forward speed through the appropriate mold (24, 26, 112, 132) for shaping into the appropriate cover (40, 42, 56, 58, 76, 78) of foil in the form of a tunnel, whereby it moves at the same forward speed as the consumables, • whereby two transport devices (12, 14) are placed along a common plane, parallel to each other, • where the molding molds (24, 26, 112, 132) are shaped so that the corresponding side edge parts of both strips (28, 30, 114, 134) of the foil, which form two covers (40, 42, 56, 58, 76, 78) of the foil in the form of a tunnel, pass through the part (36, 38, 60a-d, 80a-e, 92, 102) for processing, located between them, indicated by • that in the part (36, 38, 60a-d, 80a-e, 92,102) for processing, which is located between two covers (40, 42, 56, 58, 76, 78) made of foil in the form of a tunnel, the side edge parts of strips (28, 30, 114, 134) of foil, from which the covers of foils, placed in at least two layers of foils with contact points and contact free space, placed vertically, one above the other, 2 where the contact free space is the free space between the edge parts of the foil layers that are across from each other, • that in the case of at least two foil layers, formed in the part (36, 38, 60a-d, 80a-e, 92, 102) for processing, the contact edges of one strip (28, 114) of the foil are located one above the other, that the contact edges of the other strip (30, 134) are located one above the other and that the contact free spaces of the foil strips of different lengths are exactly above each other and that the foil layers are both foil covers are welded together with a welding device in the processing part (36, 38, 60a-d, 80a-e, 92, 102). 2. Machine for packaging foil covers, according to claim 1, characterized in that the device for delivering to the part (36, 38, 60a-d, 80a-e, 92, 102) for processing can deliver, at least in some parts, the reinforcing film (59c, 79c) as an additional layer of film. 3. Machine for packing foil covers according to claim 1 or 2, characterized in that both forming molds (24, 26, 112, 132) are shaped so that two edge parts of each foil strip are folded in the processing part (36, 38, 60, 80, 92, 102) and that at least two folded edge parts form at least two layers foils. 4. A machine for packaging foil covers, according to one of the previous requirements, characterized in that both molding molds (24, 26, 112, 132) are shaped so that exactly three or four layers are formed by the edge parts of each strip (28, 30, 114, 134) of the foil in the processing part (36, 38, 60, 80, 92, 102). foils. 5. Machine for packing foil covers, according to one of the preceding claims, characterized in that both molds (24, 26, 112, 132) for shaping are shaped so that outside the part (36, 38, 60, 80, 92, 102) for processing, one basic mold (77, 79) for the carrying handle is made. 6. A machine for packing foil covers, according to one of the previous requirements, characterized by the fact that two transport devices (12, 14) include several component transport devices, connected one after the other in the area of the respective molds (24, 26, 112, 132) for forming in the form of portals, where in the transport direction (20, 22) are after each respective mold (24, 26, 112, 132) for forming two integral transport devices (120, 138) in the form of a belt, which move synchronously, below and above the corresponding cover (40, 42, 56, 58, 76, 78) made of foil in the form of a tunnel. 7. Machine for packaging foil covers, according to claim 6, characterized in that the integral transport devices, which in the transport direction (20, 22) are located in front of the mold (24, 26, 112, 132) for shaping include at least one conveyor belt, especially a belt conveyor (136, 160) with a suitable drive pusher (158), a chain transport device or other transport devices for consumables. 8. The machine for packaging foil covers, according to claim 6 or 7, indicated by the fact that it includes in the transport direction (20, 22) behind the mold (24, 26, 112, 132) for shaping, a support device, which can move in synchronization with the integral transport devices (120, 138), in the capacity of mechanical support of the part (36, 38, 60, 80, 92, 102) for processing, at approximately half the height of the consumables to be packed. 9. A machine for packaging foil covers, according to one of the previous requirements, indicated by the fact that it includes means with which it can mutually sew the layers of foils in the part (36, 38, 60, 80, 92, 102) for processing. 10. A machine for packaging foil covers according to one of the preceding claims, characterized in that it includes a longitudinal cutting device which cuts the welded part (36, 38, 60, 80, 92, 102) for processing. 11. A machine for packing foil covers, according to one of the previous requirements, characterized by the fact that it includes means for conducting transverse welding of parallel foil covers (40, 42, 56, 58, 76, 78) in the form of tunnels that move along a common plane, thus welding them, and that it includes a device for transverse cutting. 12. A machine for packaging foil covers, according to claim 11, characterized in that the means for transverse welding and for transverse cutting can be moved along the transport direction. 13. A machine for packing foil covers, according to one of the previous requirements, characterized by the fact that it is also intended to pack groups of consumables with a form of symmetrical rotation, for example toilet paper with the appropriate direction of its rotation axes transversely and/or longitudinally in relation to the transport direction (20, 22) and/or vertically. 14. A machine for packaging foil covers, according to claim 14, characterized by the fact that it includes a device (156) for turning or a device (188) for turning rolls, which turns the consumables with any direction of the rotation axis, especially along the transport direction (20, 22), i.e. transversely in relation to it. 15. A machine for packaging foil covers, according to claim 14, characterized by the fact that it includes a separation device (154) which separates already prepared starting material, especially cut rolls (152). 16. Machine for packaging foil covers, according to one of the preceding claims, characterized in that the two transport devices (12, 14) are constructed so that they are basically completely symmetrical. 17. The method of packing consumables, especially products in sheets (16, 18, 32, 34, 52, 54, 72, 74, 118) with a machine (10, 100, 110, 130, 150, 170) for packing foil covers, indicated by the fact that it includes 1 • two transport devices (12, 14) with two corresponding molds (24, 26, 112, 132) for shaping in the form of portals, which are intended to redirect the corresponding tape (28, 30, 114, 134) delivered to them, in the transport direction (20, 22) of the corresponding transport devices (12, 14) so that in the transport direction (20, 22) after each mold (24, 26, 112, 132) for shaping is formed by a cover (40, 42, 56, 58, 76, 78) made of foil in the form of a tunnel in the capacity of packaging, • where two transport devices (12, 14) are intended to move the groups of consumables, which are on them and which are to be packed, at a predetermined forward speed through the corresponding mold (24, 26, 112, 132) for shaping into a suitable sleeve (40, 42, 56, 58, 76, 78) made of foil in the form of a tunnel, while it moves at the same forward speed as the consumable material, • whereby two transport devices (12, 14) are placed along a common plane, parallel to each other, includes the following steps: • formation of two covers (40, 42, 56, 58, 76, 78) from the foil in the form of a tunnel from strips (28, 30, 114, 134) of the foil so that a part (36, 38, 60, 80, 92, 102) for processing is formed, which is located between them, so that in that part (36, 38, 60, 80, 92, 102) for processing, which is located between the covers (40, 42, 56, 58, 76, 78) of foil in the form of a tunnel, the side edge parts of the strips (28, 30, 114, 134) of foil, from which the covers of foil are formed, placed in several layers of foil, with contact points and contact free space, placed in the vertical direction, one above the other, whereby is the contact free space that free space between the edge parts of the foil layers that are across from each other, so that the contact edges of one strip (28, 114) of the foil are located one above the other, that the contact edges of the other strip (30, 134) are located one above the other and that the contact free spaces of the foil strips of different lengths are located exactly above each other and so that part (36, 38, 60, 80, 2 92, 102) for processing includes at least two layers of foil which are formed by the edge parts of both strips (28, 30, 114, 134) of foil, movement of groups of consumables, to be packed, through the appropriate mold (24, 26, 112, 132) into the appropriate sleeve (40, 42, 56, 58, 76, 78) made of foil in the form of a tunnel, welding of foil layers in the part (36, 38, 60, 80, 92, 102) for processing, transverse welding of parallel covers (40, 42, 56, 58, 76, 78) made of foil in the form of a tunnel, which move along one common plane.