JP3202226B2 - Method and apparatus for replacing a take-up roll body - Google Patents

Abstract

In a device for changing winding rollers (2) in machines for winding material webs (4), especially paper or cardboard webs, on sleeves, it is known to apply double-sided adhesive strips (31, 34) to the web (4) in order to secure the start of the web to a new sleeve and/or the end of the web to a full winding roller (3). According to the invention, the adhesive strips (31, 34) are first applied to a transfer device (transfer roller 21) displaceable against the web (4) with a weaker adhesive force than on the material web (4), and then the transfer device (transfer roller 21) is moved against the web (4) and the adhesive strips (31, 34) are transferred thereto.

Description

Description: The invention relates to a method for replacing a take-up roll with a machine for winding a material web, in particular a paper web or a carton web, of the type defined in the preamble of claim 1 and An apparatus for performing the method.

In a winder for winding a material web to form a take-up roll, an effort is made to minimize the machine stoppage time required when changing the roll. In this case, it is necessary to ensure that the new web start formed at the time of web breakage is securely fixed to the new winding tube and / or that the web end is securely fixed to the full winding roll body. No.

In this type of method disclosed in DE-A 36 118 95, the material web is first weakened at a certain location before reaching the support drum,
One adhesive track is applied on each side of this weakened point and the material web is cut on the support drum by braking. The end of the web held on the supporting drum by the negative pressure is moved toward the full winding roll, and adheres to the winding roll. During this movement, the newly formed web leading edge remains braked until the finished roll is released and a new tube is installed, after which the brake is released and the web with the adhesive strip is applied. The start end is conveyed from the support drum to the winding tube and adhered to the winding tube.

In the supporting drum type winder described in DE-A-4003504, a perforating device on the entry side and a number of laterally-adhesive adhesive tapes are applied laterally over the entire working width. An adhesive tape dispenser is disposed. These adhesive tape dispensers deliver the adhesive tape in the web running direction. The application of the adhesive tape can be effected by means of a moved web.

Paper or carton webs require a wide adhesive strip that extends consistently across the width of the web, or approximately 200 m for deposition in the web running direction.
It has been found that an adhesive strip is required for each m.
At large web widths (eg, 8 m), the application of a laterally extending adhesive strip requires a lot of time, and the application in the web running direction requires a large number of adhesive tape dispensers.

DISCLOSURE OF THE INVENTION The object of the present invention is to improve a method of the type mentioned at the outset so that only one adhesive dispenser is required for applying the adhesive strip and that the machine downtime is not prolonged. It is to provide such a method.

This object is achieved by a method according to the features of claim 1.

According to the present invention, only one adhesive dispenser is required. The adhesive dispenser first applies an adhesive strip to the transfer element. This can be done during winding of the material web, so that the machine downtime is not extended. If the roll change takes place in less than the time required to apply the adhesive strip to the transfer element, two adhesive dispensers are sufficient. These adhesive dispensers apply adhesive strips from both sides simultaneously to the transfer element over the entire working width.

Claims 2 and 3 describe advantageous methods of the invention.

The transfer drum in free-rotational contact with the moved material web according to claim 2 makes it possible to apply the adhesive strip with the moved material web.

Claim 3 describes an advantageous variant for changing rolls on relatively heavy papers, for example cartons. The material web is first weakened and adhesive strips are applied on both sides of the weakening line. This weakening line can then be moved to the desired position for bonding the new web start to the new tube. After the web has been cut, both the web end (for bonding to the full take-up roll) and the newly formed web start (for bonding to the new winding tube), the adhesive strip is applied. Have.

According to a fourth aspect of the present invention, a full winding roll is replaced with a new winding in a winding machine having two driven drums driven so that the winding roll comes into contact with the winding. Particularly advantageous variants of the method according to claim 3 are described.

Claims 5 et seq. Describe advantageous arrangements for implementing the method according to claims 1 to 4.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings serve to explain the invention with reference to a simplified embodiment.

1 and 2 show a side view of an adhesive applicator according to the invention, which, when used in a winder, comprises a plurality of adhesive strips extending in the web running direction. Are applied at an interval from each other.

FIG. 3 shows an adhesive application device for applying a wide adhesive strip in a direction transverse to the web running direction.

FIG. 4 shows a paper web with a parallel adhesive strip applied in the web running direction.

FIG. 5 shows a paper web with a wide band of adhesive applied in a direction transverse to the web running direction.

FIG. 6 shows an adhesive applicator for applying one or more adhesive traces.

BEST MODE FOR CARRYING OUT THE INVENTION The illustrated supporting drum type winder has two driven drums 1 and 2 which are driven, and a winding roll 3 is brought into contact with these supporting drums during winding. I have. A material web 4, preferably a paper web or a carton web, which has been divided into individual webs in the longitudinal direction, is diverted from below by a support drum 1 and passes through a gap between two support drums 1, 2 to a drum floor. 5 and subsequently wound up in a aligned and juxtaposed winding tube. Such double-supported drum type winders are well known and are described, for example, in DE-A-320 746, so that the description of parts which are not relevant to the invention is omitted. .

At both ends of the support drum 1 on the entry side, mounted are levers 6 which are pivotable about the axis of the support drum, and which support a pivoting cross beam 7 which extends laterally over the entire working width. . A freely rotatable protrusion roller 8 for protruding the full winding roll 3 beyond the support drum 2 is attached to the upper surface of the revolving cross beam 7. On its underside, said turning beam supports a corresponding holder 9 for a perforating device 10 which extends over the entire working width. The corresponding holder has two support surfaces 11, 12, between which a groove is provided. Due to the pivoting movement of the pivoting crossbeam 7, the support surfaces 11, 12 can be moved towards the material web 4 as shown in FIG.

The perforating device 10 has a toothed cutter 14 extending over the entire working width. This cutter can be separated from the material web 4 by using the lifting unit 15 or the second
For the purpose of perforating the material web 4 as shown in the figure, it can also be pushed into the groove of the corresponding holder 9 which has been lowered.
In order to clamp the material web 4 during the perforation process,
Two clamping elements 17, 18, which are resiliently supported on a cutter holder 16, work side by side with the cutter 14. These clamping elements are provided on the support surfaces 11, 1 of the corresponding holder 9.
2 can be pressed.

Below the support drum 1, an application device 19 for applying an adhesive is arranged. The application device has a transfer drum 21 which extends over the entire working width and is pivotally supported on a pivot arm 20 by means of a drive.
The transfer drum can be moved from below toward the material web 4 located in the area where the support drum 1 is wound. The surface of the transfer drum 21 has such a property that the adhesion of the adhesive to the transfer drum is weaker than to the material web 4. That is, the surface has less adhesion than the material web 4.

As shown in FIGS. 1 to 3, below the transfer drum 21, an adhesive tape dispenser 22 is disposed. The adhesive tape dispenser is supported on a guide 23 so as to be movable laterally over the entire working width, ie parallel to the axis of the support drum. In the embodiment shown in FIGS. 1 and 2, the guiding of the adhesive tape 24 takes place in the running direction of the material web 4. For this purpose, a storage roll 26 consisting of an adhesive tape 24 with a double-sided adhesive layer adhered to a support tape 27 is rotatable on a carriage 25 which can be moved laterally with respect to the material web. It is supported by As the adhesive tape, a general-purpose adhesive tape in the papermaking industry is used. The adhesive layer of the adhesive tape peels off the support tape 27 very easily. The adhesive tape 24 is guided upward by the carriage 25 and is guided to the pressure roller 28 having the width of the adhesive tape in a direction opposite to the running direction of the material web 4. This pressure roller deflects the adhesive tape downwards to a driven spool 29 for the support tape 27. In order to apply the adhesive strip layer to the transfer roller 21, the piston cylinder unit 30
Delivery drum located at the lowered position using
The pressure roller 28 can be turned upward toward 21.

For example, if a relatively short application time is required to apply the adhesive strip layer to the transfer drum 21 based on the short roll exchange time, two or more adhesive applications are performed simultaneously. A plurality of adhesive tape dispensers are arranged over the entire machine width.

FIG. 1 shows a supporting drum type winder during the winding process. The perforating device 10 and the corresponding holder 9 are spaced apart from the material web 4 so as not to interfere. Since the delivery drum 21 has been lowered,
This transfer drum is also spaced from the material web 4. In this position, a plurality of parallel adhesive strips 31 are applied to the surface of the transfer drum along the running direction of the material web 4. For this, adhesive tape
A pressure roller 28 wound around by 24 rotates toward the transfer drum 21 from below. By the rotation of the transfer drum 21, the adhesive tape 24 is paid out from the storage roll body 26, and the adhesive strip 31 is taken by the transfer drum 21. The remaining support tape 27 is taken up by a spool 29. After the transfer drum 21 is provided with an adhesive strip layer of a desired length, the pressure roller 28 is turned downward,
As a result, the adhesive layer of the adhesive tape 24 breaks. Subsequently, the carriage 25 moves to the next adhesive strip layer delivery position in a direction transverse to the web running direction. At the same time, the transfer drum 21 is pivoted again and returned to the pick-up position, whereby the adhesive strip 31 to be picked up is aligned. The next adhesive band-like layer 31 is delivered to the delivery drum 21 by the compression of the pressure roller 28. In relation to the width of the material web 4, a plurality of adhesive strips 31 are applied to the transfer drum 21 that are parallel to one another and are aligned transversely to the running direction of the material web 4. This is advantageously done about every 200 mm. Similarly, it is possible to adjust the position of the adhesive strip 31 in relation to the vertical cutter position so that the adhesive strip 31 is evenly distributed on the individual webs.

When the winding roll 3 reaches a defined web length or a defined diameter, the winding machine is stopped. The material web 4 stops by receiving a pulling force by a braking force applied by a feeding device (not shown). Subsequently, since the turning cross beam 7 is moved downward, the support surfaces 11 and 12 of the corresponding holder 9 abut against the material web 4 and this material web 4
Is weakened by perforation. To do this, use cutter 14
The support surface extends upwardly through the material web 4
Move into the groove between 11,12. During perforation, the material web 4 is clamped and stretched between the clamping elements 17, 18 and the support surfaces 11, 12. At the same time, as shown in FIG.
And abuts against the material web 4. At this time, the transfer drum 21 is rotated such that the circumferential distance between the contact line 32 for the material web 4 and the center of the adhesive strip 31 substantially corresponds to the distance between the contact line 32 and the cutter 14. Have been allowed. Subsequently, the cutter 14 is lowered together with the clamp elements 17, 18, and the transfer drum 21 is switched to the free rotation state. Thereafter, the support drum 1 is started again with a reduced web tension, in which case the contacting transfer drum 21 also rotates. At this time, the adhesive strip 31 is pressed against the material web 4 under pressure in the contact line 32, and the adhesive strip 31 is separated from the transfer drum 21 and adheres to the material web 4. This is because the adhesive force on the material web 4 is greater than the adhesive force on the transfer drum 21. The perforation line 33 of the material web 4 has also advanced to the contact line 32 during this time. Therefore,
The adhesive strip 31 will be on both sides of the perforation line 33 provided in the material web 4 (FIG. 4).

After the adhesive strip 31 has been delivered to the material web 4,
The transfer drum 21 is lowered again, and at this position, a new adhesive strip can be taken in preparation for the next roll change. Weakened web location (perforation line 33)
The material web 4 is further fed until the and the adhesive strip 31 reach the drum floor 5 located above the gap between the two supporting drums 1,2. At this point, the material web 4 is stopped and the brake provided on the feeding device is locked in order to reduce the maximum force. Subsequently, the take-up roll body 3 is slightly lifted from the support drum 1 around which the web is wound by the protruding roller 8 and is rotated by the support drum 2. At this time, material web 4
Tears along the perforation line 33, so that the adhesive strip is at the end of the web and at the beginning of the newly formed web.
31 is located. The newly formed web start end is held by the support drum 1. This can take place, for example, by suction using a negative pressure or by a mechanical holding element. The full take-up roll 3 is then moved to the full take-up roll 3 with the web end provided with the adhesive strip 31 being moved through the contact line for the support drum 1 or the projecting roller 8. It is rotated until it is bonded and fixed. Subsequently, the full take-up roll body 3 is protruded beyond the support drum 2 by using a protruding roller 8, and a new set of winding pipes is introduced into the drum floor 5. After application of the pressing drum (not shown), the support drums 1, 2 are again moved, whereby the new web start with the adhesive strip 31 is brought into contact with the winding tube. As the new web start with the adhesive strip 31 passes through the gap between the winding tube and the support drum 1, a durable adhesive bond between the material web 4 and the winding tube is formed. The winding machine can subsequently be accelerated to a maximum winding speed.

In the embodiment shown in FIG. 3, a wide adhesive strip 34 of double-sided adhesion is applied to the transfer drum 21 in a direction transverse to the running direction of the material web 4, that is, parallel to the axis. For this purpose, a carriage 25 of the adhesive tape dispenser 22 is supported so as to be movable in the lateral direction over the entire working width. In this case, the axis of the pressure roller 28 and the storage roll 26 is aligned with the axis of the transfer drum 21. Extending vertically. Adhesive strip 34 of sufficient width comes into contact with the surface to transfer drum
In order to be adhered to 21, the pressure roller 28 has its peripheral surface curved in a concave shape in the axial direction. This can be achieved, for example, by the use of hourglass rollers. The pressure roller 28 presses the adhesive tape 24 against the transfer drum 21 as in the previous embodiment, whereas the carriage is moved over the entire working width. Subsequently, the pressure roller 28 is lowered, and at this time, the adhesive layer of the adhesive tape 24 breaks. In order to apply the adhesive tape to the transfer drum 21 more quickly, one
One adhesive tape dispenser 22 can be arranged. The adhesive tape dispensers each apply an adhesive strip layer 34 to a half of the transfer drum 21. The transfer of the adhesive strip layer 34 to the material web 4 is performed by pressing the transfer drum 21 to the material web 4 as described above.

In a further embodiment shown in FIG. 6, a double-sided adhesive strip is applied to the transfer drum 21 by spraying. For this purpose, one or more adhesive nozzles 35 are provided below the transfer drum 21. The adhesive nozzle can be moved across the width of the web or in a direction transverse to the web. With the aid of the adhesive nozzle 35, the transfer drum 21 is sprayed, for example, with one or more traces of a dispersion adhesive, which solidifies to form a double-sided adhesive strip. Continued
This strip is transferred to the material web 4 as described above.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Droptzinski, Hartmut Germany D-4047 Dormagen 5 Wilhelm Bush Shuttlese 100 (56) References JP-A-58-157666 (JP, A) 53-55298 (JP, A) JP-A-3-243567 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65H 19/28 B65H 19/29

Claims (10)

(57) [Claims] 1. A method for replacing a take-up roll with a machine for winding a material web, in particular a paper web or a carton web, onto a take-up tube, the method comprising: adhering a web start to a new take-up tube; For the purpose of gluing the end to the full take-up roll (3) or alternatively to glue the web start to a new roll and the web end to the full take-up roll (3). A method in which a double-sided adhesive strip (31, 34) is applied to the material web (4), which has a substantially lower adhesion than the material web (4). An adhesive strip (31, 34) is applied to a transfer element (21) having an inclined surface and movable toward the material web (4), and subsequently the transfer element (21) is applied to the material web (4). 4) Move to the web Wherein the hand over the end portion or web end portions an adhesive strip layer (31, 34), a method of exchanging the winding roll. 2. The transfer element according to claim 1, wherein said transfer element is formed as a transfer drum (21) in free-rotational contact with the material web (4) being moved. Method according to claim 1, wherein (31,34) is passed on to the material web (4). 3. Prior to removal of the full winding roll (3), the material web (4) entering the winding machine is moved along a weakening line (33) extending transversely to the web running direction. Weakening, adhesive strips on both sides of said weakening line (31,34)
The web of material (4) is subsequently broken by increasing the web tension, after which the end of the web is glued to a full winding roll (3) and, after the installation of a new winding tube, the winding 3. The method according to claim 1, wherein the new web start is glued to the tube. 4. A material web (4) is automatically replaced with a new winding tube by means of a winding machine with two driven drums driven by a winding machine. Deflected by the support drum (1) and introduced from below into the drum floor (5) through the support drum gap, stopping the material web (4) to weaken it, followed by a weakening line (33) Is moved to the drum floor (5) and stopped at this location, during this movement adhesive strips (31,34) are applied on both sides of the line of weakening, and the beginning of the web to be newly formed is The material web (4) is held by the support drum (1) wound around by the web, and then the full roll (3) is rotated against the braking force to cut the material web (4), and the web end portion is cut. Is adhered to the winding roll body (3) which is full. The roll is then removed by removing the full winding roll (3) from the drum floor and, after installing the new winding tube, adhering the winding tube to the new web start by the rotation of the two support drums (1,2). 4. The method of claim 3, wherein a body exchange is performed. 5. An apparatus for winding up a web of material for carrying out the method according to claim 1, comprising a double-sided adhesive strip. A transfer element (21) movable towards the incoming material web (4) is provided, the surface of which has a lower adhesive force than the material web (4) and is substantially smoother. Formed in the adhesive strip (31,3
Means for applying (4) to said delivery element (2)
2.35) A device for replacing a take-up roll, wherein the device is provided with (2, 35). 6. The device according to claim 5, wherein the transfer element includes a driven transfer drum which can be switched into a free-running state. 7. One or more adhesive tape dispensers (22) are provided, the adhesive tape dispensers being arranged on the side of the transfer element (21) opposite to the material web (4) in the direction of web travel. It is mounted so as to be movable transversely to the transfer element (21) in a direction transverse to the web running direction or in the web running direction. An apparatus according to claim 5 or claim 6, wherein 8. The device according to claim 5, wherein an adhesive nozzle is provided for spraying the adhesive strip onto the transfer element. 9. A support drum (1) is provided which is partially wound by a material web (4) and in which the transfer element (21) is wound by the material web (4). 9. The device according to claim 5, wherein the device is crimpable to the support drum. 10. The device according to claim 5, wherein a device (10) for weakening the material web is arranged on the entry side before the transfer element (21).