EP1044882A1 - Device for packaging a roll of web material - Google Patents

Abstract

The winder unit has a roller-drive mechanism (8) and a dispenser (10) for a length of packaging material. A discharge applia (33) for the length of packaging material is adjustable at an acute angle to the peripheral direction of the roll (2)of material along which the discharge appliance moves axially. The dispenser has a drive mechanism (16). A control (23) is connected to a diameter-meter (22)and has a glue-applicator (24)

Description

The invention relates to a device for packaging a web of material with a winding station, the a roller drive and a packaging web dispenser having a packaging web dispenser.

The web rolls to be packaged have a considerable amount Size. Their diameter is usually in the range from 500 to 2,100 mm. The roll width is usually 500 to 3800 mm or more. Such web rolls arise, for example in paper or textile production. To the web rolls from their manufacturing facility, for example the paper mill, to the place of consumption, for example a printing house, they have to be wrapped with a packaging sheet, to protect them. The packaging line offers mechanical protection against damage. On the other hand, it should also influence of environmental factors such as air humidity. Since the material web rolls during production with the highest different widths occur, is known Devices (EP 0 499 954 A1) a large number of Packaging web rolls with different widths intended. Here, the web rolls in Depending on their width in different classes assigned. There is one for each breadth class Correspondingly wide packaging web roll necessary. This must be so wide that when wrapping or Wrap the web of material web axially a certain amount Length, usually 100 to 250 mm, over the material web roll survives. The overhang must be large enough be to him on the face of the web roll to be able to fold. On the other hand, the supernatant is allowed not be too big. Otherwise the folding cannot more with the desired quality. This is important, for example, when the pre-packaged Material web rolls are stacked axially one above the other should (so-called stacking of chimneys).

For many different widths of web rolls many packaging web rolls must be kept ready become. The large number of packaging web rolls means of course a considerable logistical Expenditure. Accordingly, there must be many different ones Roll widths are stocked. Furthermore, in the packaging web dispenser arrangement the necessary Storage spaces for the packaging rolls are available become. This takes up space and increases the maintenance effort and increases the mechanical engineering effort.

The invention is based, the packaging to simplify a web roll.

The object is achieved in a device of the type mentioned Kind solved in that the packaging web delivery device at an acute angle to the circumferential direction the web roll is adjustable and the Packaging web dispenser along the web of material web is axially movable.

The packaging web dispenser is part of the Packaging web dispenser from which the packaging web comes out. If the packaging web dispenser an acute angle to the circumferential direction of the web roll has, this means that the longitudinal edge of the Packaging track just this acute angle with the circumferential direction the web of material includes. In order to results when the web roll is rotated, automatically the helical course of the packaging line on the circumference of the web roll. There the packaging web dispenser moves axially at the same time there are also no impermissible lateral Tensions on the packaging line, in particular for wrapping paper to tear the packaging web could lead.

The packaging web roll is preferably from one position, in which their axis is parallel to the axis of the material web roll is pivotable into a position in which form an acute angle on both axes. There are no complicated deflection devices necessary, with which the packaging line is deflected. The packaging line can rather be straight from the packaging web roll deducted and directly onto the peripheral surface the web of material to be placed. Thereby, that the packaging web roll also in one position can be pivoted to the web roll, in the the two axes are parallel, you can use the same one Packaging web roll also produce the edge strips, which have the axial projection and which Protect edges.

The entire packaging web dispenser is preferably opposite the web roll can be rotated or swiveled. So you can see the packaging web dispenser as one Unify unity, which is essentially structured like this is like conventional packaging dispensers. in the Contrary to the conventional facilities, the new packaging web dispensers can only be rotated or swiveled his. This can be done, for example realize that the packaging web dispenser rotating or is pivotally mounted on a carriage that the Axial movement causes.

The packaging web dispenser advantageously has one Drive for movement along the material web roll on. The load on the packaging line is hereby kept small. The axial movement no longer has to the lateral forces are generated on the material web. Rather, it takes place under the action of the drive.

It is particularly preferred that a control device is provided with a diameter measuring device is connected and which is the winding speed and the feed of the packaging web dispenser taking into account the diameter of the material web roll coordinated. Let it through almost tension-free winding processes are generated. If the diameter of the roll of material to be packed and the angle at which the packaging web to Circumferential direction is known, the feed rate can be that of the packaging web dispenser must get over the web roll, easily calculate. The drive can be controlled accordingly become.

The packaging web dispenser preferably has a glue application device on. So that after unwinding the packaging web from the packaging web roll Apply glue immediately, which leads to a dense Gluing the packaging leads. If one already adhesive-coated packaging web is used, you can also use a glue application device replace other adhesive transfer station. Such Bonding station can be at a water soluble Work glue, for example, by Applies water to the packaging line. With PE-coated Packaging webs become the bond activated by heat.

With this device, a web of material can be rolled Pack so that the packaging web with its long edge at an acute angle to the circumferential direction of the web roll to the web roll and then helically around the web roll is led around. So one roll of packaging web is enough with a single width to cover all web rolls, pack whatever width they have to be able to. The helical arrangement of a Packaging web itself is known, see here EP 0 519 672 A1. However, it is a prerequisite that a packaging web is used that is deformable in itself is. The fact that the packaging line with their Long edge not parallel to the circumferential direction, that is parallel to the front of the roll of material to be packed is aligned, it can take the form of a Helical or helical around the web roll be led around without it being necessary to deform the packaging web itself. she can rather, stay wrinkle-free. The strip that the packaging web forms, can then easily from one end the material web roll brought to the other end become.

It is particularly preferred that the angle is set in this way will that adjacent winding layers of the packaging web overlap each other. This gives you at a coherent cover in a single winding process for the scope of the web roll.

Adjacent wedge layers preferably overlap about half the width of the packaging line. In order to each encounter the next but one layer of the Packing line in the middle of the intermediate one Winding layer on each other, only separated by this winding layer. This automatically creates a two-layer cover, which is usually sufficient to protect the web roll to ensure. The coverage is large enough to prevent moisture or other ingress Environmental influences through the gap between successive Prevent layers of the packaging web. The envelope can be completed with a single winding process become. A stronger shell, a shell, which consists of more than two layers of the packaging web, is often undesirable for cost reasons.

The helically guided one preferably ends Packing path within the axial extension of the Roll of material web. This avoids that the axial ends of the web roll a non-uniform Protrusion forms. If this is uneven Protrusion on the end face is too expect the thickness of the weft not to exceed the entire circumference of the material web roll on its end face done evenly. Especially with an intended one Chimney stacking of the web rolls could it then causes the individual web rolls to be skewed come. But if you avoid it from the start, that such an unevenness to one If the stack is skewed, you can also use the new procedures pack rolls that later on top of each other should be stacked.

It is particularly preferred that in addition to helical wrapping of the web roll with the packaging line a second packaging line aligned parallel to the circumferential direction and under Formation of an axial projection in the area of a axial end of the web roll around the web roll is wrapped. This second packaging line thus forms an edge strip which, in contrast to first packaging line no longer at an angle to Circumferential direction, but parallel to it. This Edge strips cover the area that is in the helical wrapping of the web roll remained free at the beginning of the material web roll. In order to the roll of material web is on its circumference in the area the roll edges protected. Serves at the same time the edge strip also to provide a protrusion, which then later on the front of the web roll can be struck to between an inner front cover and an outer front cover attached to become. It differs in this regard the packaging then completed in this way no longer from conventional packaging that a packaging line with a sufficient width has been formed.

Preferably, both packaging lines from the same stock roll. So you need just a single supply role, what the logistics and the Stocking made considerably easier. The needed Device becomes lighter and easier to construct.

Preferably, the second packaging line after the first packaging web applied. You can be the first Packaging web with the outermost layer of the material web connect on the roll of material and then later the second packaging line with the one already applied first packaging line. This has the advantage that the the first packaging line practically all over with the outermost one Position of the material web on the material web roll can be connected, which increases reliability. In addition, the axial edge of the web roll somewhat thicker, i.e. he receives one marginally larger diameter, which will later transport the Rolling, especially by unrolling, facilitated.

The second packaging line with one is advantageous larger number of layers wrapped around the web roll than the first packaging line. One is on the one hand endeavors to cover the through the first packaging line is formed as inexpensively as possible to design, so with as few layers of the Packaging lane. At the same time you want but make the edge protection as good as possible. Here you are quite ready, a multi-layer winding to install. The fact that now with a single packaging web width works, you can do both Agree claims with each other. The web roll will be along most of its axial length for example wrapped with two layers of the packaging web. On the other hand, there are four or six layers applied to ensure edge protection.

Adjacent packaging web sections are preferred glued together. So you get one good cohesion of the entire packaging. The packaging becomes stable and protects the web roll against the penetration of moisture. Gluing can by applying adhesive. But it can also a packaging web already provided with adhesive are used, e.g. by moistening a rubber coating or heating a layer of PE or others known types is made sticky.

A packaging paper is advantageously used as a packaging web used. Wrapping paper has been used for packaging such Proven web rolls. With wrapping paper however, the risk that it will tear if one exposed to uneven load. For this So far, you could only use wrapping paper if the circumference of the web roll is even was enveloped. With the new process now use wrapping paper even if the Width of the wrapping paper web considerably narrower than that The width of the web roll is.

The packaging web preferably has a width of at least 350 mm. This allows an axial Realize a protrusion of 100 to 150 mm at the end of the roll. At the same time you can see the packaging line wrap around the roll of material so that the desired one Cohesion is guaranteed, i.e. the overlap between adjacent winding layers is sufficient. Preferably but one becomes packaging web widths of about Use 500 mm.

Fig. 1

eine schematische Draufsicht auf eine Rollenverpackungseinrichtung,

Fig. 2

eine Seitenansicht der Einrichtung nach Fig. 1 und

Fig. 3 bis 5

verschiedene Stadien einer Rollenverpakkung.

The invention is described below with reference to a preferred embodiment in conjunction with the drawing. Show here:

Fig. 1

1 shows a schematic top view of a roll packaging device,

Fig. 2

a side view of the device of FIG. 1 and

3 to 5

different stages of a role packaging.

A roll packaging device 1 for packaging a Roll of material roll 2, which has a roll diameter in the range from 500 to 2,100 mm and a roll width of Can have 500 to 3800 mm or more, has one Runway 3 with a roller catcher 4. An incoming one Material web roll 2a is braked by roll catcher 4 and then rolled into a winding station 5. There it is placed on a conveyor belt 6, with the Help them in the direction of an arrow after packing 7 can be fed to further processing.

To the side of the conveyor belt 6 are two lifting and lowerable support rollers 8, 9 arranged, one of which Carrier roller 8 is driven.

A packaging web dispenser 10 is also provided, which carries a packaging web roll 11, on the one Packaging web 12 is wound up, via a delivery device 33 can be delivered. The packaging railway dispenser 10 is arranged on a slide 13, on rails 14, 15 parallel to the axial direction the web roll 2 is movable. This points the carriage 13 has a drive 16, however is only shown schematically.

The packaging web dispenser 10 is opposite the carriage 13 rotatably mounted. It has a rotary drive 17 with the help of which an angle between the axis of the Packaging web roll 11 and the axis of the web roll 2 can be changed. The packaging web dispenser 10 can both with the help of the rotary drive 17 be aligned so that both axes are parallel to each other are, as well as so that both axes point one Include angles. Such a case is shown in FIG. 1 shown. From this it can be seen that the packaging line 12 accordingly with the circumferential direction the material web roll 2 encloses an acute angle. The circumferential direction is on the web roll 2 shows the direction on the circumferential surface of the roll of material web 2, which runs parallel to the end faces.

Furthermore, the roll packaging device points to both One swiveling side of the material web roll Pack press 18 on. On each side of the web roll a folding device 19 is also provided, the a folding bike 21 arranged on a lever 20 for each has axial end face of the web roll 2.

Finally, the roll packaging device 1 also a thickness measuring device 22, which with a Control device 23 is connected and this control device 23 the roll diameter of the material web roll 2 announces. The control device 23 in turn is connected to the drive 16 for the slide 13 of the packaging web dispenser 10, with the drive of the driven Carrier roller 8 and with the rotary drive 17, the the angle between the packaging web dispenser 10 and the carriage 13 adjusts.

The roll packaging device 1 works as follows: The carriage 13 is in the region of an axial end position move the web roll 2. Here he will placed at an angle to the web roll 2, i.e. the axis the packaging web roll 11 and the axis of the packaged Material web roll 2 close a pointy Angles with each other, as can be seen from FIG. 3 is. The packaging web 12 is with the help of a glue application station 24 on their top with glue or another adhesive and then attach to the system brought the web roll 2. With the help of the control device 23 is now the driven support roller 8 turned. Then the web of material rolls down 2 in rotation. The control device 23 previously has the Packaging web dispenser 10 rotated so that the angle between the packaging web roll axis and the material web roll axis set so that a helical wrapping of the material web roll 2 results from the packaging web 12. This wrapping is designed so that successive layers overlap by about half the packaging web width. This creates a two-layer shell, the practically over the entire axial length of the material web roll 2 from two layers or layers of the packaging web consists. Here is the packaging line arranged that they (in the longitudinal direction of the packaging web seen) with one half outside and with the the other half on the inside of the roll of material to be packed 2 is present. You can keep glue in shape apply a glue bead to the packaging web 12, so that the packaging web 12 with the circumference of the material web roll 2 on the one hand and on the other hand with itself is glued itself.

The axial ends of the roll of material web are an exception to this 2. It has been ensured that the packaging web as long as it is in the helical Way wrapped in the web roll 2 has not been on the end faces 25, 26 of the web roll 2 survives. This way arise uncovered sections that are essentially wedge-shaped or are triangular.

If now the material web roll 2, apart from the uncovered sections 27, 28 just mentioned, complete is wrapped by the packaging web 12 the packaging web 12 with the help of the knock-off knife 31 chipped or severed. Then there is the Packaging web dispenser 10 approximately in that shown in FIG. 4 Position, i.e. at the left end of the material web roll 2. In this position it is now turned this way or pivoted that he the packaging web 12 in one Feeds an angle of 90 ° to the web roll 2. At the same time it is positioned axially so that the packaging path 12 an axial projection 29 to the web of material web 2 forms. This axial projection has one axial length of about 100 to 150 mm. Here too provide the packaging web 12 with adhesive so that the individual layers adhere firmly to one another. The circumferentially wrapped around the web roll 2 Packaging web 12 thus forms an edge strip 30, which later with its projection 29 on the front side 26 of the material web roll 2 can be folded. This edge strip 30 serves to protect the edges the web roll 2. For their protection is in the Reqel a stronger shell necessary. You can therefore Edge strips 30 from a larger number of layers build up the packaging web 12 as the rest of the wrapper.

When the edging strip 30 is finished, it will again the tee knife 31 operated. The web roll 2 continues to rotate and the edge strip 30 is being completed.

The packaging web dispenser 10 then travels as shown in FIG Fig. 5 is shown, to the other end of the web roll 2 and brings one in the same way Edge strip 32, which also protrudes axially and composed of several layers of the packaging web 12 can be.

When the edge strip 32 has been wrapped, are known in the manner of the inner front cover the packaging web inserted protrusions 29. With help the folding device 19, the protrusions on the Inner front cover folded. With the help of the packing presses 18 are placed on the outer end covers and with the folded Protrusion glued.

With the help of the conveyor belt 6, the removal is then carried out the fully packaged web roll 2, after the support rollers 8, 9 have been lowered.

For the entire circumferential packaging of the material web roll 2 you only need a single packaging web roll 11, which has a width of about 500 mm. The packaging line can still be made from wrapping paper be what enables inexpensive packaging. By coordinating the winding speed, feed and angle between the roller axes can be one Realize winding that is almost free of lateral There is tension on the packaging web. Despite the helical or helical wrapping the roll of material web with the packaging web 12 can one continues to fold the packaging web evenly on the front of the web roll 2 realize. The edge protection can be improved.

Claims (7)

Device for packaging a roll of material web with a winding station that has a roller drive (8) and a packaging web dispenser (10) with a Package delivery device (33), thereby characterized in that the packaging web delivery device (33) at an acute angle to the circumferential direction the material web roll (2) adjustable and the packaging web dispenser (10) along the Material web roll (2) is axially movable. Device according to claim 1, characterized in that the packaging web roll (11) from a Position in which their axis is parallel to the axis of the web roll (2) lies pivotable in one position is in which both axes are at an acute angle lock in. Device according to claim 1 or 2, characterized in that that the entire packaging web dispenser (10) twisted or is pivotable. Device according to one of claims 1 to 3, characterized marked, the packaging web dispenser (10) a drive (16) for movement along the Has web roll (2). Device according to claim 4, characterized in that a control device (23) is provided with a diameter measuring device (22) is connected and which the winding speed and the feed of the packaging web dispenser (10) under Taking into account the diameter of the roll of material (2) coordinated. Device according to one of claims 1 to 5, characterized characterized that the packaging web dispenser (10) has a glue application device (24). Device according to one of claims 1 to 6, characterized characterized that the packaging web dispenser (10) a water application device as an adhesive agent or has a heat source.

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