DE10309049A1 - Process and assembly to remove a first paper roll from a winding assembly and replace this by an empty hub forming the next roll - Google Patents

Abstract

In a process to feed a paper web onto a new hub (6), which replaces a full roll (5) in contact with a winding drum (2), the new hub is positioned over an in contact (N2) with the drum and the web is transversely divided by a single cut. During this process a quantity of glue is applied to the resulting new feed ribbon, which is then presented to the empty hub (6). The glue is applied to an area of paper either side of the cutting line. The trailing edge of the outgoing ribbon bonds with the outer paper surface of the preceding reel, while the leading edge of the new ribbon bonds with the hub of the next reel (6). Also claimed is a commensurate assembly.

Description

The invention relates to a method to transfer one over one Partial area of a winding roller running material web, in particular a paper or cardboard web that is on one with the winding roller a first nip-forming winding roll is wound on one with the winding roller, a new winding core forming a second nip, especially an empty reel, with the new winding core initially in a waiting position over the winding roller is held, the web being separated.

Such a method is already in the DE 101 61 073 A1 proposed. The method described there is used to transfer a material web, for example in the area of a reel-up of a paper or cardboard machine, a coating machine or an equivalent machine, to the material web one after another onto empty winding cores without interrupting the manufacturing process, i.e. without switching off the paper or cardboard machine , which are also referred to as empty reels, or to wind the material web on a preferably empty winding core in special situations, for example after the paper or cardboard web has been torn off or after the paper or cardboard machine has started up. It must be ensured here that the beginning of the web created by the separation of the material web is fed to the new winding core in order to form a new winding roll thereon.

By introducing the at least an initial separator between the at least one transfer strip and the winding roller, which after reaching the nip in the from the transfer strip not covered Area is connected to the new winding core, and the defined Separate the threading strip through the initial separator under Formation of a new, the initial separator and the new winding core bound start of the web ensures a clean start of winding.

From the EP 0 765 832 B1 a method for winding a paper or cardboard web is known, in which the web is supported during the reeling by means of a belt which runs through a gap between the winding core or the supporting roller and the winding roller and which is supported by an additional roller. When the paper or cardboard roll being wound on the winding roll is stopped, it is pushed to a change position by means of the additional roller, and a new winding core is lowered into the space between the roller and the winding roller. A changing device is lowered to the new winding core. The end of the web is separated from the center to the edges by means of water separating nozzles. The beginning of the web resulting from the cutting process is blown onto the winding core by means of air. At the same time, the end of the web, which is still being wound onto the full winding roll, is glued to the upper layer of the web winding on the winding roll by means of an adhesive. The adhesive is sprayed onto the web from nozzles at a fixed distance from the dividing line.

The separation process takes place in one Formation of the known device by means of water separating nozzles are arranged so that the water separation lines they produce to cut. The adhesive nozzles are also suitable for Application of the adhesive arranged.

A method is known from WO 92/06913 known for separating a material web by means of water jet nozzles, which is a weakly V-shaped Create dividing line.

From the DE 42 08 746 C2 is a method for changing bobbins in a winding machine for winding a web is known, in which the web cut by means of cutting devices in the middle part along two lines in the running direction of the web, the interfaces above the reeling drum, i.e. the winding roller, lying in the web running direction in front of the reeling drum and then cutting in a triangular shape by moving the cutting devices in the direction of the respective web edges to separate the entire strip, the narrow median strip of the web being cut in the web running direction behind the contact point between the winding core and the winding roller. Here, an adhesive label with adhesive surfaces on both sides is fed to a contact point on the winding core, which lies between the two lines, in order to form a guide tape, the guide tape being brought exactly onto the new spool by the label, attached and the front end of the guide tape being fastened by the Label is lifted from the winding roller to form a space so that it can be easily separated in the direction of travel in front of the label by a high-pressure air jet blown into this space.

It is the task of the present Invention, a simple method for transferring a web of material a full winding roll towards a winding core or empty reel guarantee.

According to the invention, this object is achieved in a method of the type mentioned at the outset in that the material web is separated by a single continuous dividing line and that an adhesive is applied to the material web during the separation, by means of which the material web is connected to the winding core, the adhesive in an area that at least partially covers the dividing line onto the material web will be carried.

With a single step the separation of the material web is achieved on the one hand, and additionally two gluing processes prepared: from the one process of applying the Adhesive area created by the Separation process within this area two separate adhesive or adhesive zones: one adhesive area is used to connect the web end in the first nip with the top layer of the web on the web roll, which is full while the other adhesive area for connecting the beginning of the web to the winding core serves. This can be done by air or the use of a belt supported but these funds are not absolutely necessary.

While according to the state of the art only the use of different connecting means to connect the beginning of the path on the one hand and the end of the path on the other is known, the invention provides a simple method for Establishing connections.

In an alternative procedure to this an adhesive tape is used. The material web is through a single continuous dividing line is separated, and during the Separating, an adhesive tape is applied to the material web, by means of which the material web with the winding core and / or with the winding roll is connected, depending on whether the tape in front of or behind the Dividing line is applied.

Likewise, with a variant this method the adhesive tape in one the dividing line at least partially sweeping Area applied to the material web, which again achieves the advantage is that the glue or the tape, the respectively that on the side of the material web leading the dividing line is applied, on the one hand an end sheet of the material web on the winding roll connects to the top layer of the material web and on the other hand creates the connection to the winding core.

In a further development of this method after the first nip on the winding roll a device for application an adhesive or an adhesive tape on the top layer of the Winding roll turned on. This will make the adhesive effect already through the adhesive applied to the end of the material web or Tape still supported.

For connecting the end sheet of the material web with the top layer on the winding roll it also serves when due of electrostatic charges on the end sheet of the material web and the top layer on the winding roll, each one different polarity have so that they attract each other.

In a further development of the method according to the invention it is envisaged that the material web in free train before the second Nip or on the outer surface the winding roll is separated before the second nip.

To avoid the web of material itself while during the separation process or during of the transition is set up or folded over to the winding core, the separation process omitting a narrow area on one of the side web edges the material web started.

The separation process involves cutting or Perforating the material web, in particular by means of a water or a compressed air jet or by means of one in the winding core introduced vacuum shoe. Alternatively, the vacuum shoe can also be used or be arranged behind the winding core. It goes without saying that cutting knives can also be used for cutting.

Advantageously, it becomes water-soluble Adhesive, in particular an adhesive containing glue or starch, is applied to the material web. This can waste pieces of Web of material when removing the top or bottom Layers of a winding roll emerge again in the paper making process be recycled.

It is also advantageously provided that the separation process is carried out by two release agents, the above traverse the width of the material web. Generate the release agents an approximately V-shaped Cutting line as known per se from the prior art is (see above). A traverse is used for traversing above the Material sledge mounted on the material web. On the sled are an advantage also nozzles attached to apply the adhesive or tape dispensing stations to apply an adhesive tape in the separation area or two adhesive tapes and behind the separation area. The nozzles are also arranged in such a way that either only a single gluing area or two gluing areas arise that lie in front of and behind the dividing line.

To create a tip for a V-shaped dividing line two release agents are suitable, the separating lines they have created cross each other. To do this, the release agents are used on different Traversing slides arranged above or next to each other are and independent be moved by each other. In this case, too, the means to apply the adhesive together with the release agents apply to the same sled.

The invention also relates to a winding machine for transferring one over a Winding roller running web of material, especially a paper or Cardboard web that forms a first nip with the winding roller Winding reel is wound on a second with the winding roller Nip-forming new winding core, in particular an empty reel, with the new winding core first in a waiting position over the winding roller is held, the material web by means of at least a separating device is separated along a dividing line.

The winding machine provides that the at least one separating arrangement interacts with at least one adhesive arrangement in such a way that the adhesive and the separating process are carried out immediately in synchronism.

The winding machine is an advantage designed so that the at least one separation arrangement is a water nozzle and that the water nozzle of several adhesive nozzles is surrounded.

In an advantageous further training is composed of at least one separation arrangement in the winding machine with the at least one adhesive arrangement across the width or at least the biggest part the width of the material web arranged traversing.

According to the invention in one embodiment with two independently traversable cutters cut a strip that with the help of adhesives such as tape dispensers, punched-out adhesive tape roundels, Portions of adhesive, for example in the form of spheres, bags, granules or the like, a vacuum shoe of a selective or traversing Wasseraufsprühung, a selective or traversing spraying of adhesive, by means of a two-component adhesive or by means of a thermal or Reliable activation of UV or light on the empty or wound Drum (which is always to be understood here under the term "empty drum" should) be attached while at the same time through a cross traverse the cutting devices the material web is separated. Another Variant is the cutting device, which traverses the material web severed and at the same time applies the adhesive.

According to the invention there are none additional Separation devices necessary to safely separate the strip even with tearproof Ensure material webs. Compared to known separation processes is the separation process according to the invention easier and therefore cheaper. In the variant of the adhesive directly connected with the cutting difficulties in timing the glue are also avoided.

The invention is hereinafter described in embodiments explained in more detail. In the attached drawings demonstrate:

1 a schematically and perspective winding machine according to the prior art without dispensing device for dispensing initial separating pieces;

2 an embodiment of the winding machine with an adhesive arrangement in the side view;

3 another side view of a winding machine;

4 a side view of another winding machine;

5 a material web in plan view during the separation process; and

6 a top perspective view of a winding roll and a winding core with a separating and gluing device.

A winding machine 1 ( 1 ), as is known for example from WO 98/52858 A1, includes, among other things, a winding roller also referred to as a pressure drum or carrier drum 2 , A material web is either led out of a smoothing unit, not shown here, a calender, a final group of a finishing machine or a drying section of a paper or board machine, also not shown here, then usually wraps around a guide or spreader roller, also not shown, and then runs in the direction of arrow L. the lateral surface 4 the winding roller 2 , wraps around the outer surface of the winding roller 2 by a certain angle ("wrap angle") to one between the winding roller 2 and the winding roll 5 existing nip N1, that is, an area in which this has an influence on the winding roll 5 can exercise, and eventually gets on the winding reel 5 wound.

If now the winding roll 5 has reached a certain diameter D _W , a new winding core 6 (Empty reel) pre-accelerated by means of a drive device, not shown, and in contact with the winding roller 2 brought to form a nip N2. After that it is usually in the running material web 3 in front of or on the winding roller 2 at least one dividing line 7 in at least one edge area 8th by means of at least one separation device known per se 9 attached, creating at least one transfer strip 10 is trained. For transferring the entire web of material 3 on the new winding core 6 becomes the transfer strip 10 severed and onto the new winding core 6 transferred. The transfer strip 10 can of course also in a central area of the material web 3 be separated out, as is the case, for example, in the two German patent applications DE 101 63 554.0 and DE 102 02 410.8 is disclosed.

Many variants of this method for transferring a running material web 3 with formation of at least one transfer strip are known.

According to the invention by means of an adhesive arrangement 11 for dispensing an adhesive on the side of the transfer strip 10 in the area in front of the winding roller 2 the transfer to the winding core 6 initiated. In addition to the adhesive arrangement 11 will also have an adhesive assembly 12 provided an adhesive or tape in the area in front of the dividing line 7 applies.

The separator 9 and the adhesive assemblies 11 . 12 are either on the top or bottom of the material web 3 arranged in front of the Nip N2. The separator 8th includes at least one Cutting element, preferably a cutting element with a beam of high energy density, in particular a water jet or a laser beam cutting element.

In one embodiment ( 3 ) the material web is a combined separation and adhesive arrangement 14 in the area above the winding roller 2 separated and glued. This creates both in front of and behind the dividing strip 7 an adhesive area 15 respectively 16 on the material web 3 , The area 15 is with the top layer 17 the material web 3 on the winding roll 5 glued while the area 16 with the outer surface of the winding core 6 is connected. To further improve the adhesive ability between the rear end of the material web 3 that on the winding reel 5 is glued on, it serves if after the Nip N2 another device 18 to the winding roll 5 is employed and applies adhesive or an adhesive tape to them. Another arrangement can also be used alternatively or additionally 19 for applying adhesive or an adhesive tape to the winding roll 5 be used. Another method or one that is also used to support the gluing and adhering process is the material web 3 and the winding roll 5 - At least superficially - charge differently electrostatically. This is done by, for example, a plastic element on the surfaces of the winding roll 5 and the material web 3 is led past that charges are withdrawn or brought in, as in 3 through the area 20 is indicated.

In another embodiment ( 4 ) will roll over a deflection 21 fed material web 3 via a dispenser 22 for feeding a double-sided adhesive tape with simultaneous removal of a non-adhesive carrier (movement arrows), the adhesive tape on a surface of the material web 3 applied before the web of material 3 through a separator 9 is cut or perforated.

If two separators 25 . 26 ( 5 ) are available, which are moved against the direction of the material web on trusses across the material web, a V-shaped separating strip 24 generate, the two of the separators 25 . 26 cross each individually created separating strip around the separating strip 24 to accomplish. The separation devices preferably comprise 25 . 26 at the same time adhesive arrangements.

In another representation ( 6 ) is the combined generation of the adhesive areas 15 . 16 together with the dividing line 7 shown.

According to the invention, a non-hardening adhesive is preferably used, which allows the adhesive connection to be loosened and reattached several times. This will make the winding core 2 not contaminated on its outer surface. The adhesive consists for example of a liquid or an elastic material. The adhesion of the adhesive is to the material web 3 is larger than that of the winding core 2 ,

According to the invention, either only one cutting device 9 and just an adhesive device 11 or a plurality of cutting and gluing assemblies are used.

The cutting or cutting process is advantageous by forming a lateral transfer strip 10 initiated as in 2 is shown. Alternatively, the separation process is initiated from the middle, such as 6 shows. According to this embodiment, an adhesive strip can also be placed in the center 27 in the direction of web travel of the material web 3 muster.

1

winder

2

winding roller

3

web

4

lateral surface

5

reel

6

winding core

7

parting line

8th

border area

9

separator

10

Transfer strip

11

adhesive arrangement

12

adhesive arrangement

14

combined Separation and adhesive arrangement

15

Area

16

Area

17

Top location

18

contraption

19

arrangement

20

Area

21

idler pulley

22

dispensers

24

V-shaped dividing strip

25

separating device

26

separating device

27

tape

Claims (15)

Method for transferring a part of a winding roller ( 2 ) running material web ( 3 ), in particular a paper or cardboard web, which on a winding roll forming a first nip (N1) with the winding roller ( 5 ) is wound on one with the winding roller ( 2 ) a new winding core forming a second nip (N2) ( 6 ), especially an empty reel, whereby the new winding core ( 6 ) first in a waiting position above the winding roller ( 2 ) and the material web ( 3 ) is separated, characterized in that the material web ( 3 ) by a single continuous dividing line ( 7 ) is separated and that during the separation an adhesive on the material web ( 3 ) is applied, by means of which the material web ( 3 ) With the winding core ( 6 ) is connected, the adhesive in a dividing line ( 7 ) at least partially sweeping area ( 15 . 16 ) on the material web ( 3 ) is applied. Method for transferring a part of a winding roller ( 2 ) running material web ( 3 ), in particular a paper or cardboard web, which on a winding roll forming a first nip (N1) with the winding roller ( 5 ) is wound on one with the winding roller ( 2 ) a new winding core forming a second nip (N2) ( 6 ), especially an empty reel, whereby the new winding core ( 6 ) first in a waiting position above the winding roller ( 2 ) and the material web ( 3 ) is separated, characterized in that the material web ( 3 ) by a single continuous dividing line ( 7 ) is separated and that an adhesive tape is placed on the material web during the separation ( 3 ) is applied, by means of which the material web ( 3 ) with the winding core ( 6 ) and / or with the winding roll ( 5 ) is connected. A method according to claim 2, characterized in that the adhesive tape in a the dividing line ( 7 ) at least partially sweeping area on the material web ( 3 ) is applied. Method according to one of claims 1 to 3, characterized in that the adhesive or the adhesive tape, or that on the side of the material web ( 3 ) is applied, an end sheet of the material web on the winding roll ( 5 ) with the top layer ( 17 ) the material web ( 3 ) connects. Method according to one of claims 1 to 4, characterized in that after the first nip (N1) a device ( 18 . 19 ) to apply an adhesive or an adhesive tape to the top layer of the winding roll ( 5 ) is employed. Method according to one of claims 1 to 5, characterized in that the end sheet of the material web ( 3 ) with the top layer on the winding roll ( 5 ) due to electrostatic charges ( 20 ) of the end sheet of the material web ( 3 ) and the top layer on the winding roll ( 5 ) with different polarity is connected by electrical attraction. Method according to one of claims 1 to 6, characterized in that the material web ( 3 ) in free pull in front of the second nip (N2) or on the outer surface of the winding roll ( 6 ) before the second nip (N2) is separated. Method according to one of claims 1 to 7, characterized in that the separation process omitting a narrow area ( 10 ) on one of the side web edges of the material web ( 3 ) is started. Method according to one of claims 1 to 8, characterized in that the cutting process involves cutting or perforating the material web ( 3 ), in particular by means of a water or compressed air jet or by means of a jet in the winding core ( 6 ) introduced vacuum shoe. Method according to one of claims 1 to 9, characterized in that a water-soluble adhesive, in particular an adhesive containing glue or starch, on the material web ( 3 ) is applied. Method according to one of claims 1 to 10, characterized in that the separation process by two release agents ( 25 . 26 ) is carried out across the width of the material web ( 3 ) traverse. A method according to claim 11, characterized in that the of the two release agents ( 25 . 26 ) generated dividing lines ( 24 ) cross each other. Winding machine for transferring one over a winding roller ( 2 ) running material web ( 3 ), in particular a paper or cardboard web, which on a winding roll forming a first nip (N1) with the winding roller ( 5 ) is wound on one with the winding roller ( 2 ) a new winding core forming a second nip (N2) ( 6 ), especially an empty reel, whereby the new winding core ( 6 ) first in a waiting position above the winding roller ( 2 ) and the material web ( 3 ) is separated by means of at least one separating device along a separating line, characterized in that the at least one separating arrangement ( 14 ) with at least one adhesive arrangement ( 11 . 12 ) interacts in such a way that the gluing and separating process are carried out immediately synchronously. Winding machine according to claim 13, characterized in that the at least one separation arrangement ( 14 ) is a water nozzle and that the water nozzle is surrounded by several adhesive nozzles. Winding machine according to claim 13 or 14, characterized in that the at least one separation arrangement ( 14 . 25 . 26 ) together with the at least one adhesive arrangement ( 11 . 12 . 25 . 26 ) across the width or at least most of the width of the material web ( 3 ) is arranged traversing.