EP0759396B1 - Device and method for packaging a roll of web material - Google Patents

Abstract

At least one of the rolls of packaging can be axially displaced. A glue applicator unit (28) is positioned between the rolls (10-13) of packaging material at least in their axial overlapping part . The glue applicator is positioned behind the cutter blade (27). The axially movable roll of packaging material (11,12) has an axial drive (25,26) with control (4) connected to the width measuring unit (3) for the roll of material (2). The axially movable roll is positioned on a mobile support (21,22).

Description

The invention relates to a device for packaging a material web roll with a packaging web dispenser arrangement, which has several packaging web rolls, at least one of which is axially displaceable is, so that the webs, if necessary, a protective cover can form from several parallel to each other their longitudinal edges overlapping sheets can be put together are with an adhesive switchboard that is used for connection of packaging lines can serve and in axial overlap area between the packaging web rolls is arranged. Furthermore, the Invention a method for packaging a roll of material web, whose circumference is wrapped in a protective cover being made up of several, parallel to theirs Longitudinal overlapping packaging webs assembled , at least one of which is for hiring of the overlap area is axially displaceable and the connected in their overlapping areas be, connecting between pulling off the Packaging webs from the packaging web rolls and the Applying the packaging webs to the material web roll or when placing the packaging webs on the material web roll and the packaging lines after Winding the necessary number of winding layers knocked off become.

The web rolls are relative large structures with diameters and lengths greater than 0.5 m, as used for example in the paper industry Form of paper rolls or in the textile industry in Form of woven or knitted rolls can be produced. Such web rolls, their diameter also more than 2 m and their width is also more than 3.5 m can, with several layers of a protective cover surrounded them during transportation and storage to protect against environmental influences.

In a known device (EP 0 499 954 A1) a large number of packaging web rolls with different Widths provided. This is necessary to also web rolls with different widths to be able to pack. The packaging line is after the Wrap the roll of material axially over its End face over and is then usually on the Front folded. The supernatant must not be too big. Otherwise the folding can no longer with the desired quality. On the other hand the overhang may not be too small. At If the protrusion is too small, secure packaging can be used no longer guarantee the web roll. As a rule, the packaging line (multiple Wrapping paper) about 100 to 150 mm wider than the one to be packed Roll of material web.

The large number of packaging web rolls means of course, a considerable logistical effort. It must have a corresponding number of different roll widths be stocked. Furthermore, in the packaging track dispenser arrangement the necessary storage spaces be kept ready for the packaging web rolls.

The device described in US 2,893,191 has one Packaging web dispenser arrangement on which several packaging web rolls has, of which the two the latter a smaller width than the former having. The narrower packaging web rolls can be moved in the axial direction. By different Overlap widths between the narrower Packaging web rolls can be adapted to different achieve wide web rolls. To the The two will then create a protective cover Packaging webs from the narrow packaging web rolls peeled off and glued together. For this purpose, an adhesive spray device is provided, that acts on one of the two packaging lines. Both Packaging webs are then passed together through a nip guided and glued together by pressure. If there are enough winding layers on the material web roll a cutting device occurs in action that cuts the packaging lines. This The cutting arrangement is behind the connection point in the running direction arranged for the two packaging lines.

The problem now arises that a relative precise control of the interacting parts is required. The glue nozzle must namely Be put into operation before the cutter Operation can be set. However, it becomes too decommissioned early, then the ends of the Packaging webs no longer connected. If it is taken out of service too late, it disconnects Cutting device from the packaging line. The two packaging lines from the rolls 14a and 14b are still connected to each other, so that a axial displacement of the two rollers relative to each other is no longer possible without the packaging line to damage.

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

This task is the beginning of a device mentioned type in that the adhesive transfer station behind the packaging lanes a tee knife is arranged.

This ensures that despite the connection of the individual packaging lanes together the following Material web roll have a different width can. Since the adhesive transfer station is only behind the Tee knife is arranged, separates the tee knife the packaging lanes in an area where they are not yet connected. This ensures that they are axial again after knocking off are movable to each other.

If of several, i.e. at least two, packaging web rolls one is slidable, one can use the packaging tracks of the two roles overlap each other. This results in one from several packaging lines composite protective cover, the width of which can be varied is. One can therefore by moving the a packaging web roll in the axial direction an adjustment the width of the protective cover to the individual web roll to reach. That way you can do it Take care that the assembled packaging web only with the desired supernatant, for example a supernatant of the order of 100 to 150 mm, axially over the material web roll to be packed survives. If the web roll is longer, be the two packaging web rolls moved axially further apart, so that there is a smaller overlap area results. For web rolls with one The two packaging rolls are smaller in width axially moved closer together so that there is a larger one Overlap area results. By overlapping the individual packaging webs result in a low one Thickness change in the packaged web roll. Since the packaging line usually only with a few layers around the roll of material, plays the fact that then individual axial Sections twice the number of packaging web layers located than in others, not a big one Role. The adhesive transfer station is in the axial Area of overlap between the packaging web rolls is arranged. Simply overlapping is enough Packaging lanes are often already out to ensure reliable To reach the packaging of the material web roll, especially if the packaging line with a sufficient tension around the material web roll to be packed is placed. In this case it is practical not possible the individual packaging lines pull axially apart. For additional security to achieve, but will be the overlapping Packing lanes in their overlap area glued together. This creates a composite Packaging web or protective cover with the desired width, exactly to the one to be packed Material web roll is adjusted.

The adhesive switching station preferably acts an area near the edge of at least one Packing lane. It is not necessary to use the packing lanes in their entire overlap area connect to. Nevertheless, if you have the Connecting packaging webs at all, ensuring that the adhesive mediation is also on the right one Job is done. For this reason, the adhesive switching station works on the edge at least one Packing lane. This border is on everyone Case still in the overlap area.

The axially displaceable packaging web roll advantageously has an axial drive with a control device on that with a width measuring device for the Material web roll is connected. So that the Automate the packaging of the web roll. The Control device that the widths, i.e. the axial Length known to individual packaging lanes, can be determined after determining the width of the packaged Material web roll the necessary axial overlap calculate and then the sliding packaging roll move accordingly far. In this way can also with different widths of the web rolls always the desired axial projection adjust the packaging line.

The axially displaceable packaging web roll is preferably arranged on a movable carrier, the has a path guide that can be moved together with it. Despite the axial displacement of the packaging web roll the path guidance always remains correct to that Packing web roll aligned. The danger that the This breaks the packaging web.

The packaging web dispenser arrangement advantageously has several packaging web rolls of the same width. This makes stocking easier. Several packaging web rolls with the same width are easier to manage than a large number of different widths. The adaptation to the web rolls different Width is done by setting the Overlap area of the individual packaging lines.

It is also preferred that the packaging web dispenser arrangement a packaging web roll with reduced Width. This packaging web roll is to the smallest width of the material web rolls to be packed customized. Even the smallest width should be reliable Folding the axial overhang on the The end faces of the rollers must be guaranteed.

The packaging web rolls are preferably pre-glued Wrapped in packaging web. Preferably can here a water-soluble cold glue or a hot melt adhesive be applied to the packaging web. The Bonding station can then be a relatively simple one Have structure.

The packaging web rolls preferably have a Width of maximum 1.5 m. Packaging web rolls, that are limited to this width can still be relatively easy to handle. The packaging web dispenser arrangement can be designed accordingly smaller. This makes it cheaper and requires less Room. The trains for the packaging line are easier too check if the packaging line is narrow.

The task is accomplished by a method of the type mentioned at the beginning Kind of solved in that the teeing off in still unconnected area of the packaging lanes.

With this assembly can be practically stepless an adjustment of the width of the protective cover to the Reach the packaging web roll. As a result of that the packaging lines are put together in the end a coherent one Protective cover that protects the packaging web, so against Environmental influences such as moisture and the like, protects. Because the packaging webs in their overlapping Areas will be connected to each other Packaging reliability increased.

The assembly preferably takes place between the Pull the packaging webs off the packaging web rolls and the creation of the packaging lanes on the Roll of material or when creating the packaging web to the web roll. On the packaging web rolls the individual packaging lines can therefore work independently stay wound up from each other. The final The width of the protective cover only arises during of the packaging process.

An overlap area of at least is advantageous 100 mm set. This makes the protective cover despite their composition from several packaging lines in Axial direction stable enough to perform the desired task namely the safe packaging of the web of material, too fulfill.

In a very particularly preferred embodiment provided that the web rolls accordingly their widths can be divided into different classes and a packaging track combination for every class is fixed. This makes automation easier. The control device selects depending on the the appropriate packaging line combination in each class and then only has to within certain Limit the width of the assembled protective cover adjust that the individual packaging lanes overlapped more or less in the axial direction become.

The material web roll is preferably in the axial direction packed symmetrically. This facilitates the further Handling, especially when unrolling the packaged Roll of material web.

Fig. 1

eine Seitenansicht einer Vorrichtung zur Verpackung einer Materialbahnrolle,

Fig. 2

eine schematische Draufsicht auf die Vorrichtung und

Fig. 3

Verpackungen für verschiedene Breiten von Materialbahnrollen.

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

Fig. 1

2 shows a side view of a device for packaging a roll of material web,

Fig. 2

a schematic plan view of the device and

Fig. 3

Packaging for different widths of web rolls.

Fig. 1 shows a device 1 for packaging a Roll of material 2. With the help of an auxiliary device 3 (Fig. 2), for example from two opposite axially movable stamp can exist, the Roll 2 axially centered in the device 1. At the same time stands over the extension path of the auxiliary device 3 also information about the width of the roll 2 for Available. This latitude information is sent to a control device 4 reported. Of course you can the width measurement of roll 2 also elsewhere take place, for example in connection with a usually also carried out diameter measurement, but which is known per se and therefore not is further explained.

A winding station 5 is provided in the device 1, which has a plurality of support rollers 6, at least of which one is powered. If the support rollers 6 in Rotation are set, the role 2 is also turned.

The winding station becomes a sheet-like protective cover 7 fed, which via a feeder 8 on the Material web roll 2 is brought to the plant. If the web roll 2 rotates, it is with the protective cover 7 wrapped. Axial protrusions can then known way on the end faces of the web roll 2 can be folded. This folding can when wrapping or later.

The device has a packaging web dispenser arrangement 9, which in the present case has four packaging web rollers 10-13. Every packaging web roll A packaging web guide 14-17 is assigned to 10-13.

The two packaging web rolls 10, 13 are stationary arranged in a stand 18. The packaging web rolls 11 and 12 are displaceable in the axial direction, such as this is indicated in Fig. 2 by the double arrows 19, 20 is. For this purpose, the packaging rolls 11, 12 are each mounted on a slide 21, 22. Every sledge 21, 22 is displaceable on a rail 23, 24. Around Every slide shows how to automate the movement 21, 22 a drive 25, 26, which in turn with the Control device 4 is connected. The drive can be formed by a motor that is electric, hydraulic or is pneumatically driven.

On each carriage 21, 22 is the roll of packaging web 11, 12 associated web guide 15, 16 attached, which is shown only schematically in Fig. 2. The web guides 15, 16 are thus together with the Carriage 21, 22 moved in the axial direction.

On the stand 18 there is a knock-off knife 27 and one Adhesion switching station 28 arranged. The adhesive switching station 28 is for the sake of clarity not shown in Fig. 2. The tee knife 27 is in the running direction of the protective cover 7 between the web guides 14-17 and the adhesive transfer station 28

From the individual packaging web rolls 10-13 Packaging lines 30-33 pulled off. The packaging lines 30-32 are all the same width. In the present Embodiment they have a width of 1,400 mm. The packaging web 33 from the packaging web roll 13, on the other hand, is only 900 mm wide.

The mode of operation of the device is described below of FIG. 3 in connection with FIG. 2 explained in more detail become.

The control device 4 provides with the help of the auxiliary device 3 or otherwise the width of the packaged Material web roll 2 firmly. Here are in the present case provided five classes, of which four are shown. The first class concerns web rolls with a width B up to 700 mm (Fig. 3a). The second class concerns web rolls a width of 700 to 1,200 mm (Fig. 3b). The third Class concerns web rolls with a width B between 1,200 and 2,500 mm (Fig. 3c), in the fourth Class material web rolls come with a width between 2,500 mm and 3,100 mm (Fig. 3d) and in the fifth Class even wider web rolls up to approx. 3,600 mm.

In the first class, the web rolls are exclusive wrapped with the packaging web 33, the then forms the protective cover 7 itself. The web of material 33 with a predetermined number of winding layers placed around the web roll 2. The axial protrusions can when wrapping the web roll or in a subsequent station on the front sides be folded in.

For second-class web rolls, i.e. roll with a width of 700 to 1,200 mm the packaging line 30 used by the packaging web roll 10. Until then, the device basically works just like the devices according to the prior art.

Conversely, it becomes a third-class material web roll packaged, i.e. a roll with a width of 1,200 up to 2,500 mm, the two packaging lines 31 and 32 used by the packaging web rolls 11, 12. The control device 4, the width of the to be packaged Material web roll 2 is known, then actuated the drives 25, 26 and moves the slides 21, 22 so that the packaging webs 31, 32 in one area P overlap. The width P is variable here. It grows with decreasing width B of the packaged Roll of material web and shrinks with increasing Width B of the material web roll. Essentially is just a minimum width of the overlap area P of about 100 mm required. Otherwise it will the width P of the overlap area is chosen so that the axial projection of the packaging web 31, 32 approximately 100 to 150 mm.

On the way between the packaging web rolls 11, 12 and pass through the web of material roll 2 to be packed the packaging webs 31, 32 also the adhesive transfer station 28. The adhesive transfer station 28 connects now the two packaging webs 31, 32 in their Overlap area P, so that the protective cover 7 now two packaging webs 31, 32 is composed. There the knock-off knife 27 in the running direction of the packaging tracks 31, 32 in front of the adhesive transfer station 28 is located, the two slides 21, 22 after the knocking off of the packaging lanes again independently move from each other in the axial direction 19, 20.

When the web rolls 2 become even wider the carriage 21, 22 axially further outwards method. In this case, the packaging line is also added 33 used by the packaging web roll 13. So three packaging lanes partially overlap in pairs. For even wider web rolls 2 can instead of the packaging web 33 the packaging web 30 can also be used.

The adhesive switching station 28 acts at least on the axially inner edges of the packaging webs 31, 32 or on both edges of the packaging webs 30, 33 ensures that the individual packaging lines reliably in their overlap area are connected.

If the necessary number of wrapping layers of the protective cover 7 has been wrapped around the web roll 2 is the tee knife 27 in action. The still between the tee knife 27 and the web roll 2 located rest of the protective cover 7 is wound up and the wrapping of the web roll 2 is completed. The rest of the handling, for example attaching of end caps or applying labels, takes place in a manner known per se.

The advantages of such a device and such Procedure are easily recognizable:

The whole device takes up less space. she will cheaper. The trains for the packaging line are easier to control because the tracks are narrow. The procurement and storage of the packaging webs is easier since it is only two packaging web widths acts. Handling the packaging web rolls is easier because of its lesser Width have a lower weight. The whole device is clear and without problems with machines for the creation of inner and outer end covers as well Labeling machines can be retrofitted. Also pre-glued Packaging webs, for example pre-glued packing paper, which is coated with cold glue or hot melt adhesive can be used.

Claims (13)

1. Device for packaging a roll of web material (2), comprising a packaging web dispenser arrangement (9) having a plurality of packaging web rolls (10-13), at least one of which is axially displaceable, such that, if necessary, the webs can form a protective cover which can be composed of a plurality of webs overlapping one another parallel to their longitudinal edges, a glue applicator station (28) which can serve to join packaging webs and is arranged in the axial overlapping region between the packaging web rolls, characterised in that the glue applicator station (28) is arranged downstream of a cutter (27) in the feed direction of the packaging webs (30-33).
2. Device according to claim 1, characterised in that the glue applicator station (28) acts on a region in the vicinity of the edge of at least one packaging web (30-33).
3. Device according to claim 1 or claim 2, characterised in that the axially displaceable packaging web roll (11, 12) has an axial drive (25, 26) with a control device (4) connected to a means (3) for measuring the width of the roll of web material (2).
4. Device according to one of claims 1 to 3, characterised in that the axially displaceable packaging web roll (11, 12) is arranged on a movable support (21, 22) having a web guide (15, 16) movable therewith.
5. Device according to one of claims 1 to 4, characterised in that the packaging web dispenser arrangement (9) has a plurality of packaging web rolls (10-11) of the same width.
6. Device according to one of claims 1 to 5, characterised in that the packaging web dispenser arrangement (9) has a packaging web roll (13) of reduced width.
7. Device according to one of claims 1 to 6, characterised in that the packaging web rolls (10-13) are provided with pre-glued packaging webs (30-33).
8. Device according to one of claims 1 to 7, characterised in that the packaging web rolls have a maximum width of 1.5 m.
9. Method of packaging a roll of web material, around the circumference of which is wound a protective cover composed of a plurality of packaging webs overlapping one another parallel to their longitudinal edges, at least one of which is axially displaceable in order to adjust the overlapping region and which are joined together in their overlapping regions, joining being effected between the removal of the packaging webs from the packaging web rolls and the application of the packaging webs to the roll of web material or as the packaging webs are applied to the roll of web material, and the packaging webs being cut once the required number of winding layers have been wound, characterised in that cutting is effected in the region of the packaging webs not yet joined.
10. Method according to claim 9, characterised in that assembly is effected between the removal of the packaging webs from the packaging web rolls and the application of the packaging webs to the roll of web material or as the packaging webs are applied to the roll of web material.
11. Method according to claim 9 or claim 10, characterised in that an overlapping region of at least 100 mm is set.
12. Method according to one of claims 9 to 11, characterised in that the rolls of web material are divided into different classes according to their widths and one packaging web combination is determined for each class.
13. Method according to one of claims 9 to 12, characterised in that the roll of web material is packaged symmetrically in the axial direction.

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