EP1889804A2 - Bobbin wrapping device for wrapping a sheet of material - Google Patents

Abstract

The roller winding device (1) has a winding tube and a winding reel, which is supported in a winding bed formed by two parallel support rollers (3). The material strip runs over a partial peripheral surface of the support roller, whose roll sleeve (8) is provided with opening recesses (11) opposite its peripheral surface (10). An temporary activated separating device separates the width of the strip of material in the area of the partial peripheral surface by creating a new starting material strip.

Description

The invention relates to a roll winding device for winding a material web, in particular a paper or board web, on at least one winding tube to at least one winding roll, which is mounted in a winding bed formed by a first and a second axially parallel support roller, wherein the material web over a partial peripheral surface of the first Support roller runs, the roll shell is provided with recesses open against its peripheral surface, and wherein an at least temporarily activatable separation device for web-wide separation of the material web in the region of the partial peripheral surface is provided when producing a new material web start.

A material web, for example in the form of a paper or board web, is produced in a relatively large width of currently up to 12 m and virtually endless. In order to be usable for a later consumer, for example a printing company, the material web must be subdivided into narrower webs, so-called material part webs. These narrower webs of material must then be wound into bobbins. For this purpose, a roll winder is used.

The invention is also applicable to other webs, which also have to be wound into bobbins and handled in a similar manner, such as sheets of cardboard, plastic or metal foil, respectively.

After the finish-winding of a set of rolls in the reeling of a reel-winding device, the material web running over a partial circumferential surface of the support roll is moved by means of a traversing separating knife on the Peripheral surface of the support or support roller separated by machine. The support roller is usually provided with recesses open against its circumferential surface, so-called air discharge grooves. These recesses prevent, especially at high grammages, a safe separation of the web. For example, stay at grooved places like bars.

To avoid this problem, nowadays a machine-wide cutting pad is introduced between the peripheral surface of the carrier roll and the material web to be separated. The separation process then takes place on the cutting surface, which finally has to be targeted again.

Furthermore, the material web is held during its separation by means of negative pressure on the peripheral surface of the support roller to thereby reliably supply the material web start the winding tube set for the next roll set to be wound up. The negative pressure for the carrier roll punched across its entire roll shell is generated by means of a vacuum fan. However, since the material web covers only a part of the perforated roller, the achievable negative pressure is reduced such that grammages ≥ 150 g / m ^{2 are} no longer securely held. In addition, an excess of false air is caused by causing increased operating costs in the vacuum system.

With regard to the improved securing of the material web start, the use of a suction zone integrated in the carrier roll is also provided. However, the suction box forming the suction and arranged in the interior of the support roller suction box requires a complex supply and control / regulation system. Moreover, when using it, various balancing measures have to be taken so that the reel winders can still be operated efficiently and safely even at higher machine speeds.

It is the object of the invention to provide a roll winding device of the type mentioned, with a process improved, in particular temporally shortened separating a material web, in particular also a web can be made with a high grammage.

This object is achieved in a roll winding device of the type mentioned in the present invention, that a continuous web-width separating surface is provided in the effective range of at least temporarily activatable separating device.

The object of the invention is completely solved in this way.

By providing the continuous web-width separating surface even a material web with a high grammage is completely separated with a cut. The generation of webs on previously existing Luftabführnuten can no longer be done. The separating surface formed in this way also permits a significantly faster separation of the material web with noticeably improved protection of the separating device due to uniformly acting forces and moments. The separation process of the web is significantly improved in terms of its process.

In a first preferred embodiment, the separating surface, viewed in the circumferential direction of the first carrier roll, has a length in the range of 10 to 25 mm, preferably 15 to 20 mm. This length allows an ideal separation of the material web due to the present surface even if the first support roller is not positioned correctly, be it in the forerun or in the caster. In addition, as a result of this length, the material web to be separated sufficiently flat and thus also safely supported.

The first support roller may be formed as a steel roller. In addition, it can also have an elastomeric cover. In both cases, it may also be provided with recesses open against its peripheral surface.

This consistently good to very good winding results, among other things, as a result of the discharge of ambient air from the support roller peripheral surface can be achieved, the open towards its peripheral surface recesses of the roll mantle in a preferred manner as blind holes or as grooves. In this case, these recesses may be designed as extending substantially in the circumferential direction of the first support roller or in the circumferential direction of the first support roller inclined.

Furthermore, the recesses in the area of the continuous web-width parting surface are preferably designed to be discontinuous at least on the feed side. In a further embodiment, they can also be designed to drain on the outlet side. These measures ensure that no air blasts or even air turbulences are generated during normal operation of the reel winder due to suddenly changing contours with air guidance. Overall, the material web can be performed better and quieter over the partial circumferential surface of the first support roller.

The recesses in the run-up side region of the continuous web-width separating surface can also be acted upon at least in some areas by suction means forming a suction zone. This allows, on the one hand, a fast system evacuation due to a small volume at a sufficiently high volume flow, on the other hand, a sufficiently high pressure for safe supply of the material web start to the core set for the next roll set to be wound up.

The suction means preferably comprise at least one continuous and axially parallel suction hole in the roll shell, which are connected to preferably radially arranged suction channels, which in turn preferably penetrate the peripheral surface of the first support roller in the region of the recesses. Thus, no components must be arranged in the interior of the first support roller. The possibility of installation of an integrated in the first support roller motor is therefore given in principle.

Furthermore, the suction means further comprise at least one preferably controllable / controllable Suction source, preferably a controllable / controllable vacuum source. This can be arranged on the outside, that is, the front side and stationary of the first support roller and can be connected as needed with the other suction means.

So that no system imbalances arise due to different wall properties, the roll shell is provided on the inside of the at least one continuous and axially parallel suction bore in an ideal manner with at least one balance weight. Thus, the missing mass due to the suction holes easily and gladly be compensated.

The at least temporarily activatable separating device has, in a preferred embodiment, at least one web-width traversing separating knife. This type of separation is on the one hand, even with material webs with high grammages process reliability, on the other hand, the use of a separating knife as a separating element is inexpensive.

In a further embodiment, at least one device for applying at least one adhesive strip to the new material web beginning can additionally be provided. This second transfer medium, after a successful separation of the material web, further improves the process reliability for transferring the new material web beginning to the winding tube set for the next roll set to be wound up.

With a view to possible process optimization, the device for applying at least one adhesive strip to the new material web beginning can be connected to a device for pushing out the wound winding roller from the roller bed to form a unit. This provides the advantage of as few moving components with corresponding movement units.

And furthermore, as the third transfer medium, at least one blower device acting at least regionally, preferably with a web width, can be provided for blowing the new material web start onto the winding tube to be wound be, whereby the process reliability for the transfer of the new material web start to the winding tube set for the next roll-up set to be further improved.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

Figur 1

eine schematische Darstellung einer Rollenwickelvorrichtung gemäß dem Stand der Technik; und

Figuren 2 bis 5

verschiedene schematische Detaildarstellungen einer erfindungsgemäßen Ausführungsform einer Rollenwickelvorrichtung.

Show it

FIG. 1

a schematic representation of a Rollenwickelvorrichtung according to the prior art; and

FIGS. 2 to 5

various schematic representations of an embodiment of a roller winding device according to the invention.

1 shows a schematic representation of a reel winding device 1 for winding a material web 2, which is designed in the present embodiment as a double winder-winding machine. If necessary, the material web 2 may also be a material part web. The roll winding device 1 accordingly has a first axially parallel support roll 3 and a second axially parallel support roll 4, which form a winding bed 5 between them, in which an indicated winding roll 6 is arranged. The indicated winding roller 6 is shown here with diameters of different sizes in order to make the progress, ie the diameter increase, visible during winding.

Not shown is a supply station, from which the material web 2 is withdrawn. This element is known per se in a roll winder.

Notwithstanding the embodiment of Figure 1, the idea explained below can also be used in a so-called support or contact roller winding machine, in which the winding roller 6 in each case bears only on a roller, but otherwise is kept centric.

In the case of the roll winding apparatus shown in FIG. 1, a plurality of winding rolls 6 can be arranged axially one behind the other in the winding bed 5 in the axial direction of the two support rolls 3, 4. In a support or contact roller winder, the individual bobbins 6 are expediently distributed on both sides of the corresponding roller.

Usually, such a roll winding device 1 is also provided with a longitudinal cutting device which divides the tapered material web 2 into a plurality of partial webs running parallel to one another. The partial webs may have a width in the range of about 0.3 to 4.8 m.

Further details of a reel winder, such as a back-up roll, also referred to as a rider or load roll, or drive motors for the support rolls 3, 4 are not shown.

The material web 2 passes over a partial circumferential surface 7 of the first support roller 3, the roll shell 8 has an elastomeric cover 9 and is provided with open towards its peripheral surface 10 recesses 11. The recesses 11 are designed as substantially in the circumferential direction R (arrow) of the support roller 3 extending Luftabführnuten 12.

The slitter-winder 1 further has a suction zone 13 integrated in the support roller 3, which is temporarily generated by a suction box 15 arranged in the inner region 14 of the support roller 3.

After the finish-winding of a set of rolls in the reeling of a roll-winding apparatus 1, represented by the winding roll 6, a machine-wide cutting support 16 is introduced between the peripheral surface 10 of the support roll 3 and the material web 2 to be separated (position 1). If the introduced cutting pad 16 reaches a certain circumferential position (position II), then the over the partial circumferential surface 7 of the support roller 3 is running Material web 2 by means of an at least temporarily activatable, that is traversing cutting blade 17 on the partial circumferential surface 7 of the support roller 3 when producing a new material web start 18 machine width separated. The new material web start 18 can be supplied in a known manner the winding tube set for the next roll set to be wound up, represented by the new winding tube 19. The introduced cutting pad 16 must finally be selectively detected again in a merely indicated tray 37.

FIGS. 2 to 5 show various schematic details of an embodiment of a roll winding device 1 according to the invention.

The configuration of this roll winding device 1 according to the invention corresponds in essential parts to the embodiment of the roll winding device 1 shown and described in FIG. 1, so that reference is made to this.

The difference from the embodiment of FIG. 1, which represents the prior art, according to the schematic partial plan view of FIG. 2, is that a continuous web-width separating surface 20 in the effective region W of the first and the winding roll arranged axially parallel to the support roller 3 at least temporarily activatable separating device 21 (see Figure 3) is provided. The separating device 21 comprises at least one web-width traversing separating knife 22, which is indicated only symbolically (cf., again, FIG. 3).

The separation surface 20 has - seen in the circumferential direction R (arrow) of the first support roller 3 - a length L in the range of 10 to 25 mm, preferably from 15 to 20 mm.

The first support roller 3 has, as shown in the schematic sectional view of Figure 3 according to the section line AA of Figure 2, a steel core 24 and the roll shell 8 forming elastomer cover 9, which is provided with open towards its peripheral surface 10 recesses 11. The recesses 11 are designed as grooves 25 and in the circumferential direction R (arrow) the first support roller 3 running inclined (see Figure 2). Alternatively, the recesses 11 can also be embodied as blind bores and / or running essentially in the circumferential direction R (arrow) of the first support roller 3. In principle, the first support roller 3 may be formed as a steel roller with corresponding recesses 11.

The recesses 11 in the form of mutually parallel grooves 25 are in the region of the continuous web-width separating surface 20 both run-up side (arrow B) and the inlet side (arrow C) running expiring.

Furthermore, the recesses 11 in the form of mutually parallel grooves 25 in the inlet side region (arrow B) of the continuous web-width separating surface 20 at least partially applied to a suction zone 27 forming suction means 26. The suction means 26 comprise in the embodiment shown, three continuous and axially parallel suction holes 28 in the roll shell 8, which are each connected to a radially arranged suction channel 29 (see Figure 4). The suction channels 29 in turn penetrate the peripheral surface 10 of the first support roller 3 in the region of the recesses 11. The suction means 26 further comprise at least one preferably controllable / controllable suction source 30, preferably a controllable / controllable vacuum source 31, which is not explicitly shown, the expert however, it is known.

As already explained, Figure 4 shows a schematic sectional view of the first support roller 3 in the region of the suction means 26. The suction means 26 with its three continuous and axially parallel suction holes 28 in the roll shell 8 are arranged such that they provide an optimal version and leadership of the not shown Contribute material web beginning. They are thus arranged upstream side (arrow B) of the mutually parallel grooves 25 of the roll shell 8.

5 again shows a schematic sectional view of the first support roller 3 in the region of the suction means 26. The roll shell 8 is on the inside of the three continuous and axially parallel suction holes 28 of the suction zone 27 with each provided a balance weight 32. The respective balance weight 32 is designed in terms of its geometry and mass distribution such that the missing mass of the associated suction bore 28 is compensated. Of course, the use of only one balance weight on the roll shell 8 may be provided.

Furthermore, the roll winding device 1 may comprise at least one device 33, not shown, for applying at least one adhesive strip to the new material web beginning, said device 33 being connected in a favorable manner to a device 35 for ejecting the wound winding roll from the roll bed. Such a unit 35 is for example in the European patent application EP 1 652 803 A2 set; Their content is hereby made the subject of the present description. The unit 35 together with its devices 33, 34 is indicated in FIG. 4 only in an abstract manner.

And finally, the roll winding device 1 may have at least one blowing device 36, which acts at least regionally, preferably in web width and merely indicated, for blowing the new material web beginning 18 against the winding tube 19 to be wound. In this case, the blowing device 36 is arranged below the winding bed 5 of the roll winding device 1, that is to say between the two support rolls 3, 4 (cf., FIG. 1).

In summary, it should be noted that a roller winding device of the type mentioned above is provided by the invention, with which a process improved, in particular temporally shortened separation of a material web, in particular also a material web can be made with a high grammage.

LIST OF REFERENCE NUMBERS

1

Reel winding device

2

web

3

First axis-parallel support roller

4

Second axially parallel support roller

5

winding bed

6

reel

7

Part peripheral surface

8th

roll shell

9

elastomer reference

10

peripheral surface

11

recess

12

Luftabführnut

13

suction zone

14

interior

15

suction box

16

Cutting board

17

separating knife

18

Web beginning

19

mandrel

20

interface

21

separator

22

separating knife

23

surface

24

steel core

25

groove

26

suction means

27

suction zone

28

suction bore

29

suction

30

suction source

31

Vacuum source

32

balance weight

33

Facility

34

Facility

35

unit

36

blower

37

filing

A-A

intersection

B

arrow

C

arrow

L

length

I

Position (contribution)

II

Position (separation)

R

Circumferential direction (arrow)

W

effective range

Claims (16)

Roll winding device (1) for winding a material web (2), in particular a paper or board web, on at least one winding tube (19) to at least one winding roll (6) in one of a first and a second axis-parallel support roll (3, 4). formed winding bed (5) is mounted, wherein the material web (2) over a partial peripheral surface (7) of the first support roller (3) runs, the roll shell (8) against its peripheral surface (10) open towards recesses (11) is provided, and wherein an at least temporarily activatable separating device (21) for web-wide separation of the material web (2) in the region of the partial peripheral surface (7) is provided when producing a new material web start (18),
characterized,
that a continuous web width separating surface (20) in the effective region (W) of at least temporarily activatable separating means (21) is provided. Roll winding device (1) according to claim 1,
characterized,
that the separating surface (20) - in the circumferential direction (R) of the first support roller (3) seen - a length (L) ranging from 10 to 25 mm, preferably from 15 to 20 mm. Roll winding device (1) according to claim 1 or 2,
characterized,
in that at least the first carrier roll (3) is designed as a steel roll, which is provided with recesses (11, 25) open towards its circumferential surface (10). Roller winding device (1) according to one of the preceding claims,
characterized,
in that at least the first support roller (3) has an elastomer cover (9) which forms the roll jacket (8) and is provided with recesses (11, 25) which are open towards its peripheral surface (10). Roller winding device (1) according to one of the preceding claims,
characterized,
in that the recesses (11) are designed as blind bores or as grooves (25). Roll winding device (1) according to claim 5,
characterized,
in that the recesses (11) are designed to run in an inclined manner substantially in the circumferential direction (R) of the first carrier roller (3) or in the circumferential direction (R) of the first carrier roller (3). Roller winding device (1) according to one of the preceding claims,
characterized,
that the recesses (11) in the area of the continuous web-width separating surface (20) are designed to run out at least on the feed side. Roller winding device (1) according to one of the preceding claims,
characterized,
in that the recesses (11) are acted on at least in some areas by suction means (26) forming a suction zone (27) in the area on the upstream side of the continuous web-width separating surface (20). Roll winding device (1) according to claim 8,
characterized,
in that the suction means (26) comprise at least one continuous and axially parallel suction bore (28) in the roll shell (8) which are connected to preferably radially arranged suction channels (29) which in turn penetrate the peripheral surface (10) of the first support roll (3). Roll winding device (1) according to claim 9,
characterized,
in that the suction channels (29) penetrate the circumferential surface (10) of the first carrier roll (3) in the region of the recesses (11). Roll winding device (1) according to claim 9 or 10,
characterized,
that the suction means (26) further comprise at least one preferably controllable / adjustable suction source (30), preferably a controllable / adjustable vacuum source (31). Roller winding device (1) according to one of claims 9 to 11,
characterized,
that the roll mantle (8) is provided on the inside of at least one continuous and axially parallel suction bore (28) with at least one balancing weight (32). Roller winding device (1) according to one of the preceding claims,
characterized,
that the at least temporarily activatable separating means (21) comprises at least one web-wide Traversing separating knife (22). Roller winding device (1) according to one of the preceding claims,
characterized,
in that at least one device (33) for applying at least one adhesive strip to the new material web beginning (18) is provided. Roll winding device (1) according to claim 14,
characterized,
that the device (33) for applying at least one adhesive strip to the new material web start (18) having means (34) for pushing out of the wound reel (6) from the roll bed (5) connected to a unit (35). Roller winding device (1) according to one of the preceding claims,
characterized,
in that at least one blower device (36) acting at least regionally, preferably with a web width, is provided for blowing the new material web beginning (18) against the winding tube (19) to be wound.

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