EP3231750A1 - Splice assembly - Google Patents

Abstract

The invention relates to a splicing arrangement which comprises a roll-off arrangement (4, 7) for unrolling a finite first material web (2) from a first material roll (3) or a finite second material web (5) from a second material roll (6), a brake assembly (FIG. 54, 57) for applying a braking force to the unrolling arrangement (4, 7) and / or to the rolling-off finite material web (2, 5), a connecting arrangement (18) for joining the finite material webs (2, 5) to an endless material web ( 1), a storage trolley (42) for uninterruptedly conveying the endless material web (1), at least one material web tension influencing device (37) upstream of the storage trolley (42) and an actuating device (60) connected to the at least one material web tension influencing device (37, 39) is in signal connection for actuating the same.

Description

The present patent application takes the priority of the German patent application DE 10 2016 206 446.0 claim, the contents of which are incorporated herein by reference.

The invention relates to a splicing arrangement for splicing webs of material.

Known Spliceanordnungen connect an ending, finite material web with a new finite material web, so that virtually creates an endless web. This process is referred to in the jargon as splicing or splicing and a corresponding arrangement as a splicing or splicing arrangement. In the known Spliceanordnungen of the prior art occur again and again disturbances that can lead to a production stop. It also happens that the Spliceverbindung generated during the splicing between the webs is not optimal or particularly durable.

From the DE 27 56 239 A1 a device for joining paper webs is known. The DE 38 39 688 A1 discloses a device for splicing webs.

The invention is therefore based on the object to provide a Spliceanordnung that allows a particularly simple and reliable splicing of webs. A corresponding method should also be supplied.

This object is achieved by the features specified in the independent claims 1 and 15 features. The core is that with the at least one material web tension influencing device, the web tension of the endless material web in the splice arrangement can be selectively influenced, which in turn advantageously results in a displacement of the storage wagon or a position control thereof and thus a change in the storage amount of the endless material web in the splice arrangement ,

In the splicing arrangement, the web tension of the endless material web also advantageously remains substantially constant even if the position of the storage wagon or the storage amount of the stored endless web of material in the splicing arrangement changes.

It is expedient if the splicing arrangement is part of a corrugated cardboard plant for producing a corrugated cardboard web with the endless material web produced in the splicing arrangement.

It is advantageous if the unrolling arrangement comprises a first unrolling device for unrolling a finite first material web from a first material roll and a second unwinding device for unrolling a finite second material web from a second material roll.

Preferably, the brake assembly has a first brake unit for applying a first braking force to the active first unwinding device and / or to the first unwinding finite material web and / or a second brake unit for applying a second braking force to the active second unwinding device and / or to the second unwinding finite web.

It is advantageous if, when the first unwinding device is active, the first braking force is selected such that the web tension of the finite first material web prevailing in the first unrolling device is greater, preferably substantially greater, than a desired web tension of the endless material web on the storage trolley.

Conveniently, when the second rolling device is active, the second braking force is selected such that the web tension of the finite second material web prevailing in the second unrolling device is greater, preferably substantially greater, than a desired web tension of the endless material web on the storage trolley.

The connecting arrangement advantageously comprises a first preparation device, a second preparation device, a first connecting device for connecting a web end of the finite first material web to a web beginning of the finite second material web, a second connecting device for connecting a web end of the finite second material web to a web beginning of the finite first material web and a table device for cooperating with the preparation devices and the connecting devices.

The storage cart is conveniently, in particular directly and / or indirectly, relocatable. It is expedient if the position of the storage carriage has an influence on the storage quantity of the stored endless material web in the splicing arrangement. By shifting the storage trolley, the storage amount of the endless material web in the splice arrangement can be increased or reduced.

With the at least one material web tension influencing device, in particular the web tension of the endless material web in the splice arrangement can be increased, reduced or kept constant, depending on what is currently required or specified.

It is expedient if the connection arrangement, in particular in the transport direction of the endless material web, which is arranged downstream of at least one web tension-influencing device. Güntigerweise the at least one web tension-influencing device, in particular with respect to the transport direction of the endless material web, between the storage carriage and the connection arrangement is arranged.

It is advantageous if the actuator is electrical or electronic type. It is conveniently designed as a control device.

The signal connection between the actuating device and the at least one web tension-influencing device is conveniently wireless or wired.

It is advantageous if the finite first material web and the finite second material web are finite paper webs. From these, for example, a corrugated corrugated web or corrugated smooth web can be produced.

Further advantageous embodiments of the invention are specified in the subclaims.

The embodiment according to the dependent claim 2 leads to a particularly reliable and easy handling of the rolling web. This is always particularly well or uniformly tensioned, which simplifies their handling and processing. The brake assembly preferably brakes.

The embodiment according to the dependent claim 3 leads to a rolling material web, which is always particularly well or even stretched, which simplifies their handling and processing.

According to the dependent claim 4, the splicing arrangement comprises a storage carriage displacement device for displacing the storage wagon. The storage carriage displacement device preferably acts directly or indirectly on the storage cart. It is integrated, for example, in the storage vehicle itself. Alternatively, for example, the storage trolley displacement device is an external storage trolley displacement device and acts on the storage trolley from the outside. The storage carriage displacement device is conveniently of electric, pneumatic and / or hydraulic type.

The at least one storage trolley displacement drive according to the dependent claim 5 conveniently comprises at least one storage trolley displacement motor. He is preferably a rotary drive or gear drive. Other drives can be used alternatively.

Conveniently, the storage carriage displacement device comprises at least one coupling element for coupling the at least one storage carriage displacement drive with the storage carriage, wherein preferably the at least one coupling element as an endless coupling element is executed. This storage truck transfer device is extremely reliable and economical. It is advantageous if the at least one coupling element is designed as a band, chain, belt, rope or the like.

In operation, a torque of the at least one storage carriage displacement drive suitably corresponds to a nominal value specification.

Described in the dependent claim 6 signal connection between the actuator and the storage carriage displacement device is conveniently wired or wireless.

Due to the at least one position sensor according to the dependent claim 7, the respective position of the storage wagon is particularly simple and reliable detected. Preferably, the respective position of the storage carriage is directly and / or indirectly detectable.

Conveniently, the at least one material web tension-influencing device actuates the storage wagon when it is at a distance from its zero position or at its desired position. The at least one material web tension-influencing device preferably actuates the storage trolley indirectly, in particular through the endless material web.

According to the dependent claim 8 of the storage wagon is displaceable by changing the web tension of the endless material web in the Spliceanordnung. The at least one web tension influencing device is capable, if necessary, of changing the web tension of the endless web. A change The web tension of the endless material web in the splice arrangement through the at least one material web tension-influencing device leads, for example, to a displacement of the storage wagon from its zero position or desired position. By changing the web tension of the endless material web in the splice arrangement by the at least one material web tension-influencing device, the storage wagon can in particular also be returned to its zero position or desired position.

According to the dependent claim 9, the at least one material web tension-influencing device comprises at least one brakable and / or acceleratable material web tension-influencing roller on which the endless material web rests in regions.

If the rotational speed of the at least one material web tension influencing roll is greater than the currently prevailing transport speed of the endless web on this web tension influencing roll, this leads to a reduction of the web tension of the endless material web there and / or downstream.

If the rotational speed of the at least one material web tension-influencing roller is smaller than the currently prevailing transport speed of the endless material web on this material web tension-influencing roller, this leads to an increase of the web tension of the endless material web there and / or downstream.

If the rotational speed of the at least one material web tension-influencing roller is equal to the currently prevailing transport speed of the endless material web on this material web tension-influencing roller, then the web tension of the endless material web remains unchanged there.

The at least one material web tension-influencing roller is expediently arranged downstream of the connection arrangement, in particular in the transport direction of the endless material web. It is conveniently upstream of the storage trolley, in particular in the transport direction of the endless material web.

The at least one roller drive according to the dependent claim 10 preferably acts directly or indirectly on the at least one material web tension-influencing roller. It is conveniently designed as an electric drive. It is advantageous if the at least one roller drive is a rotary drive. The at least one roller drive is in particular capable of hearing, reducing or maintaining the speed of the at least one material web tension-influencing roller.

The at least one rotational speed sensor according to the dependent claim 12 is preferably capable of directly and / or indirectly detecting the rotational speed of the at least one roller drive and / or the at least one material web tension-influencing roller.

Described in the dependent claim 13 signal connection between the actuator and the brake assembly is conveniently a wireless or wired signal connection. In particular, stands the Actuating device with the first brake unit and / or second brake unit in signal connection. Corresponding signals can be sent from the actuating device to the brake arrangement, that is, to the first or second brake unit.

The features of the subclaims 2 to 14 also relate to preferred developments of the independent claim 15.

Hereinafter, a preferred embodiment of the invention will be described by way of example with reference to the single FIGURE. The single figure shows a simplified side view of a Spliceanordnung invention.

A corrugated cardboard plant (not shown in its entirety) comprises a known corrugated board production device (not shown) for producing a single-faced corrugated cardboard web (not shown). Such a corrugated board production device is also generally referred to as a single facer.

The corrugated board production device comprises a corrugating device with corrugating rolls for producing a corrugated web having a corrugation from a material web. For bonding the corrugated web to a smooth web, the corrugating machine has a glue application device that applies glue to peaks of the corrugated web corrugation. For pressing the smooth web against the corrugated web provided with corrugated cardboard production device has a Anpressmodul, where the one-sided laminated corrugated cardboard web of the corrugated web and the smooth web.

The corrugated board production device is preceded by a first splicing arrangement for providing an endless material web 1 and a further splicing arrangement (not shown) for providing a further endless web of material (not shown). From the endless material web 1, the corrugated web can be generated, which is part of the one-sided laminated corrugated cardboard web and is also endless. Alternatively, the endless material web 1 forms the smooth web of the single-faced corrugated cardboard web. The Glattbahn is also endless. The single-faced laminated corrugated board can be laminated with another endless smooth web or one-sided laminated corrugated board. The further smooth web can be formed by the endless material web 1.

Since the two splice arrangements are preferably identical, only one of the splice arrangements will be described in detail below with reference to the single FIGURE. First, their structure will be explained.

The illustrated splice arrangement comprises for rolling a finite first material web 2 from a first material roll 3 a first unrolling device 4 and for unrolling a finite second material web 5 from a second material reel 6 a second unrolling device 7. The first unrolling device 4 and the second unwinding device 7 together form one Abrollanordnung.

The finite first material web 2 and the finite second material web 5 are firmly connected to each other for providing the endless material web 1 by means of the splicing arrangement, in particular by an adhesive tape.

The splice assembly has a base frame 8 with a base frame 9, a base stand 10 and a base frame 11. The base frame 9 is fixed in / to a floor 12. On the base stand 9, the base stand 10 is mounted on top. The base stand 10 extends substantially vertically or perpendicular to the bottom 12. The base support 11 is disposed on an end portion of the base stand 10 opposite the base stand 9 and extends substantially parallel to the floor 12 or horizontal.

Starting from the base frame base 9, the first unwinding device 4 and the second unwinding device 7 extend. The unwinding devices 4, 7 are pivotally mounted on the base frame 9 and arranged opposite one another relative to the base frame stand 10.

The first unwinding device 4 has a first receiving part (not shown) for receiving the first material roll 3, which is guided in a central opening of the first material roll 3 and is mounted between two mutually parallel first holding arms 13 of the first unrolling device 4 about a first axis of rotation 14 ,

The second unwinding device 7 is designed in accordance with the first unwinding device 4. It has for receiving the second roll of material 6, a second receiving part (not shown), which is guided in a central opening of the second roll of material 6 and between two mutually parallel second holding arms 15 of the second rolling device 7 is mounted about a second axis of rotation 16. The axes of rotation 14, 16 are horizontal and parallel to each other.

The first unwinding device 4 further comprises a first brake unit 54 which is capable of applying a first braking force to the first material roll 3. The first brake unit 54 is a pneumatic brake unit and is actuated via a first electro-pneumatic actuator 55, which communicates with the first brake unit 54 via a first line 56.

The second unwinding device 7 further comprises a second brake unit 57, which is capable of applying a second braking force to the second material reel 6. The second brake unit 57 is a pneumatic brake unit and can be actuated via a second electro-pneumatic actuator 58, which is connected to the second brake unit 57 via a second line 59. Other brake units 54, 57 and actuators 55, 58 are alternatively usable.

The finite first material web 2 can be supplied via a first feed roller 17 to a cutting and connecting arrangement 18 of the splicing arrangement, while the finite second material web 5 can be fed via a second feed roller 19 to the cutting and connecting arrangement 18.

Each feed roller 17, 19 is rotatably mounted on a first and second support arm 20, 21, which is pivotally mounted above the respective roll of material 3 and 6 for tensioning the respective finite material web 2 or 5 on the base frame support 11.

The cutting and connecting arrangement 18 serves for producing the endless material web 1 from the finite material webs 2, 5. It comprises a first preparation device 22, a second preparation device 23, a first connecting device 24, a second connecting device 25 and a table device 26 and a guide 27.

In the splicing arrangement shown, the first unwinding device 4 is active, so that the first finite material web 2 is unrolled from the first material reel 3 and eventually comes to an end. According to the figure, the first preparation device 22 is presently located on the base frame 11 in a first end region of the guide 27 adjacent to the first feed roller 17, while the second preparation device 23 according to the FIGURE is presently spaced from the base frame 11 a, the first end region opposite, second end portion of the guide 27 is located. The second end portion of the guide 27 extends adjacent to the second feed roller 19.

The guide 27 extends straight in / on the base support 11 and parallel to the bottom 12, wherein the preparation means 22, 23 along the guide 27 are displaced.

The table device 26 is also displaceable along the guide 27. It is arranged between the two preparation devices 22, 23. The preparation devices 22, 23 and the table device 26 are displaceable along the guide 27 and relative to the connecting devices 24, 25.

The connecting means 24, 25 are arranged along the guide 27 spaced from each other. They are arranged on the base frame carrier 11 above the guide 27.

The preparation devices 22, 23 are constructed identically and arranged symmetrically with respect to a vertically extending symmetry plane.

The first preparation device 22 has a rotatably mounted first adhesive roll 28 for feeding the finite first material web 2. The first adhesive roll 28 is preferably provided with an adhesive layer for holding and feeding the finite first material web 2 and can be displaced along the guide 27 for transporting the finite first material web 2 to the first or second joining device 24, 25.

The second preparation device 23 has a rotatably mounted second adhesive roller 29 for feeding the finite second material web 5. The second adhesive roller 29 is preferably provided with an adhesive layer for holding and feeding the finite second material web 5 and can be displaced along the guide 27 for transporting the finite second material web 5 to the first or second connecting device 24, 25.

Each preparation device 22, 23 has its own displacement along the guide 27 has its own first and second displacement drive 30, 31.

The connecting devices 24, 25 are of identical design and arranged symmetrically with respect to a vertically extending plane of symmetry on the base frame carrier 11.

The first connecting device 24 comprises for cutting the finite first material web 2 before joining to the finite second material web 5 a first cutting unit with an operable first cutting blade 32 and for joining the finite material webs 2, 5 to the endless material web 1 a first pressure roller 33. The first cutting unit and the first pressure roller 33 are immediately adjacent to the guide 27 on the base frame support 11 fixed, that the adhesive rollers 28, 29 of the preparation devices 22, 23 and the table device 26 along the guide 27 on the first connecting means 24 are guided past.

The second connecting device 25 comprises for cutting the finite second material web 5 before joining to the finite first material web 2, a second cutting unit with an operable second cutting blade 34 and for connecting the finite material webs 2, 5 to the endless material web 1, a second pressure roller 35th Die second cutting unit and the second pressure roller 35 are attached directly adjacent to the guide 27 on the base support 11, that the adhesive rollers 28, 29 of the preparation means 22, 23 and the table device 26 along the guide 27 on the second connecting means 25 are guided.

When the first adhesive roller 28 is in a position adjacent to the second pressure roller 35, a first connecting gap for passing through the finite material webs 2, 5 to be joined and a first adhesive tape is delimited, which is preferably adhesive on both sides and, accordingly, manually adjacent to one Web start of the finite first material web 2 for connection to the finite second material web 5 and the endless web 1 has been attached. In this case, the finite material webs 2, 5 are adhesively bonded together.

When the second adhesive roller 29 is in a position adjacent to the first pressure roller 33, a second connecting gap for passing through the finite material webs 2, 5 to be joined and a second adhesive tape is bounded, which is preferably adhesive on both sides and before it manually according to a Web start of the finite second material web 5 has been attached for connection to the finite first material web 2 or the endless web of material 1. In this case, the finite material webs 2, 5 are adhesively bonded together.

The table device 26 interacts with the first preparation device 22, the second preparation device 23, the first connection device 24 or the second connection device 25 depending on their respective position and is displaceable along the guide 27, in particular independently of this.

The cutting and connecting arrangement 18 is followed in a transport direction 36 of the endless material web 1 by a material web tension influencing roller 37, which is mounted rotatably or rotationally drivable in the region of the second material roll 6 or the second feed roller 19 at the top of the base support 11. The endless material web 1 is guided around the web tension-influencing roller 37 and abuts against this on the outside in some areas. The web tension-influencing roller 37 deflects the endless web 1. The material web tension-influencing roller 37 is rotatable about a rotation axis 38 which runs parallel to the rotation axes 14, 16.

A speed of the material web tension-influencing roller 37 about the rotation axis 38 is variable. For the material web tension influencing roller 37 stands with a roller drive 39 in, indirect or direct, drive connection. The roller drive 39 is capable of increasing, reducing or maintaining the speed of the web tension control roller 37, as the application requires. This will be discussed below.

The roller drive 39 is associated with a speed sensor 40. The speed sensor 40 is capable of detecting the respective rotational speed of the roller drive 39, in particular of its drive shaft.

The web tension-influencing roller 37 and the roller drive 39 are part of a material web tension-influencing device.

In the transport direction 36 of the endless material web 1, the material web tension-influencing roller 37 is arranged downstream of a first deflecting roller 41, which is mounted rotatably on a storage carriage 42.

The storage trolley 42 is arranged in the region of a base frame stand 10 facing away from the upper end of the base frame support 11 and is displaceable along a storage carriage guide 43 which extends parallel to the bottom 12 and above the guide 27. The storage cart guide 43 provides a transfer path for the storage cart 42 and extends substantially along the entire base carrier 11.

The storage carriage 42 is displaceable between a first end region and a second end region of the storage carriage guide 43. He is relocatable in opposite directions of displacement. In the second end region, the storage trolley 42 is disposed adjacent to a web outlet 44 and the amount of stored endless web 1 is minimal while the storage trolley 42 is spaced in the first end region from the web exit 44 and the amount of storage the stored endless material web 1 is maximum. In the figure, the storage trolley 42 is adjacent to the first end region in its zero position. From its zero position, the storage carriage 42 is displaceable in opposite directions of displacement.

For deflecting the endless material web 1, a second deflecting roller 45 is rotatably mounted on the base frame carrier 11 in the region of the material web outlet 44. The second deflecting roller 45 is arranged downstream of the first deflecting roller 41 with respect to the transport direction 36 of the endless material web 1.

The second guide roller 45 is downstream of the endless web of material 1, a third guide roller 46, which is rotatably mounted between the first guide roller 41 and the second guide roller 45 on the storage carriage 42 with respect to the transport direction 36. The axes of rotation of the guide rollers 41, 45, 46 extend horizontally and parallel to the axis of rotation 38 of the material web tension-influencing roller 37.

For displacing the storage carriage 42 along the storage carriage guide 43, on the one hand a storage carriage displacement device 47 is used. The storage carriage displacement device 47 is attached to the base frame support 11 arranged. It comprises a storage carriage displacement drive 48. Furthermore, the storage carriage displacement device 47 has a drive gear 49 which is rotatably mounted in / at the first end region of the storage carriage guide 43 on the base frame carrier 11 and in drive connection with the storage carriage displacement drive 48 stands. The storage carriage shifting device 47 also has a turning gear 50 that is rotatably supported adjacent to the second end portion of the storage carriage guide 43 on the base frame support 11. To the drive gear 49 and the Umlenkzahnrad 50 is a, in particular circumferentially closed, drive chain 51 of the storage carriage displacement device 47 out, which is in communication with the storage carriage 42 and is secured thereto.

A rotary drive of the drive gear 49 about the axis of rotation 52 through the storage carriage displacement drive 48 leads to a circumferential displacement of the drive chain 51, which in turn causes a displacement of the storage carriage 42 along the storage carriage guide 43. Depending on the direction of rotation of the storage carriage displacement drive 48 or its drive shaft or drive gear 49, the storage carriage 42 is displaced either in the direction of the second end region of the storage carriage guide 43 or away therefrom along the storage carriage guide 43.

The storage trolley displacement drive 48 is assigned a position sensor 53 for detecting the respective position of the storage trolley 42 along the storage trolley guide 43. The position sensor 53 is alternatively associated with the storage cart 42 directly for detecting its position.

Furthermore, the splicing arrangement comprises a superordinate electronic control device 60. The control device 60 has a desired value specification unit 67 for presetting desired values, in particular for the roller drive 39 and the storage carriage displacement drive 48.

The control device 60 is connected via a first signal line 61 with the storage carriage displacement drive 48 in signal connection and is able to control in use the storage carriage displacement drive 48 for corresponding displacement of the storage carriage 42 along the storage carriage guide 43 via the first signal line 61.

The control device 60 is connected via a second signal line 62 to the position sensor 53 in signal connection and receives in use via the second signal line 62 position signals from the position sensor 53, which reflect the respective position of the storage carriage 42 along the storage carriage guide 43.

The control device 60 is also connected via a third signal line 63 to the roller drive 39 in signal connection and is able to control in use on the third signal line 63, the roller drive 39 for the rotary drive of the material web tension influencing roller 37.

The control device 60 is also connected via a fourth signal line 64 to the speed sensor 40 in signal connection and receives in use via the fourth signal line 64 speed signals of the speed sensor 40, which reflect the respective rotational speed of the roller drive 39.

The control device 60 is connected via a fifth signal line 65 to the first electro-pneumatic actuator 55 in signal connection and is able to control the first electro-pneumatic actuator 55 to operate the first brake unit 54 in accordance with the fifth signal line 65.

The control device 60 is connected via a sixth signal line 66 to the second electro-pneumatic actuator 58 in signal connection and is able to control in use on the sixth signal line 66, the second electro-pneumatic actuator 58 for actuating the second brake unit 57 accordingly.

The signal lines 61 to 66 are alternatively formed by wireless signal connections.

In the following, the splice arrangement will be described closer in use.

In the figure, the first unwinding device 4 is currently active. The finite first material web 2 is unrolled from the first material roll 3 and conveyed. It is guided via the first feed roller 17, where the finite first material web 2 is deflected by about 90 °, to the cutting and connecting arrangement 18. The finite first material web 2 is passed between the second adhesive roller 29 and the first pressure roller 33. In addition, the finite first material web 2 between the spaced-apart pressure rollers 33, 35 passed through and is partially adjacent to this circumferentially.

After the cutting and joining arrangement 18, the finite first material web 2 or the endless material web 1 becomes the material web tension-influencing roller 37 out and deflected there by about 180 °. The endless web 1 is then guided to the first guide roller 41, where it is deflected again by about 180 °. After the first deflection roller 41, the endless material web 1 is guided around the second deflection roller 45, where it is deflected again by approximately 180 °. Subsequently, the endless material web 1 is guided around the third guide roller 46, where it is again deflected by about 180 ° and is guided to the material web outlet 44. In the material web outlet 44, the endless material web 1 leaves the splice arrangement.

The first preparation device 22 is located adjacent to the first feed roller 17 or at the first end region of the guide 27.

The finite second material web 5 is held by the cutting and connecting arrangement 18 or the second adhesive roll 29 in a waiting position, so that it can be connected to the endless material web 1 as needed with the finite first material web 2. This takes place in particular when the finite first material web 2 comes to an end. The second unwinding device 7 is thus inactive. The finite second material web 5 is not being unrolled or conveyed by the second material roll 6.

So that the finite first material web 2 or the endless material web 1 has sufficient web tension, the first brake unit 54 applies a first braking force to the first material roll 3. The control device 60 controls the first electro-pneumatic actuator 55 accordingly. The first braking force is selected such that the web tension prevailing in the first unwinding device 4 of the unrolling first material web 2 is greater than a desired web tension of the endless material web 1 on the storage trolley 42.

The storage cart 42 is normally in its zero position, which is also shown in the figure. However, during operation of the splicing arrangement or the corrugated cardboard plant, the web tension of the endless material web 1 may change, which leads to an automatic or independent displacement of the storage wagon 42 along the storage carriage guide 43 and thus also to an automatic or independent change the amount of memory of the endless web 1 in the Spliceanordnung leads.

If, for example, the web tension of the endless material web 1 on the storage carriage 42 increases, the storage carriage 42 is thereby automatically or independently pulled towards the second end region of the storage carriage guide 43, whereby the amount of storage of the endless web 1 in the splicing arrangement is reduced.

Such a displacement of the storage carriage 42 in the direction of the second end region of the storage carriage guide 43 also leads to an increase in the web tension of the endless material web 1 in the splice arrangement. As a result, the web tension of the endless material web 1 thereby increases over the external web tension of the endless material web 1, thereby automatically driving the storage wagon 42 back to its zero position.

In addition, as the web tension of the endless web 1 in the splice assembly increases, the first brake force is reduced by the first brake unit 54, which is achievable by corresponding actuation of the first electro-pneumatic actuator 55. The storage wagon 42 thus returns to its zero position.

When, for example, the web tension of the endless material web 1 on the storage carriage 42 is reduced, the storage carriage 42 is thereby automatically moved away from the second end region of the storage carriage guide 43, whereby the amount of storage of the endless material web 1 in the splicing arrangement is increased.

A displacement of the storage carriage 42 away from the second end region of the storage carriage guide 43 also leads to a reduction of the web tension of the endless material web 1 in the splice arrangement. As a result, the web tension of the endless material web 1 drops below the external web tension of the endless material web 1, as a result the storage wagon 42 automatically returns to its zero position automatically or independently.

In addition, when the web tension of the endless web 1 in the splice assembly reduces, the first braking force is increased by the first brake unit 54, which is achievable by corresponding operation of the first electro-pneumatic actuator 55. The storage wagon 42 thus returns to its zero position.

The first braking force is favorably chosen so that the web tension of the finite first material web 2 in the first unwinding device 4 is greater than the web tension of the finite first material web 2 or the endless web of material 1 desired on the storage trolley 42.

As already mentioned, the web tension of the endless material web 1 in the splice arrangement can also be influenced by the material web tension influencing roller 37, which ultimately leads to a corresponding displacement of the storage cart 42 along the storage carriage guide 43, as stated above leads. Thus, the storage cart 42 is stable in its zero position.

The respective position of the storage carriage 42 is dependent on the drive of the material web tension-influencing roller 37 which acts to guide the storage carriage 42 in its zero position driving or braking on the endless material web 1 to change the web tension of the endless web 1 in the Spliceanordnung. The position control of the storage carriage 42 is so independent of the storage carriage displacement device 47 can be changed.

Conveniently, the speed of the material web tension-influencing roller 37 is calculated as a function of the storage quantity of the endless material web 1 in the splicing arrangement. The desired web tension of the endless material web 1 on the storage carriage 42 is advantageously generated exclusively by the web tension-influencing roller 37.

The material web tension-influencing roller 37 is driven so that it compensates for a difference between the web tension of the rolling finite first material web 2 that prevails on the first unwinding device 4 and a desired web tension of the endless material web 1 on the storage carriage 42.

Even when the storage carriage 42 is displaced along the storage carriage guide 43, for example during a splicing operation, the web tension of the endless material web 1 in the splicing arrangement remains substantially unchanged. During operation of the splice arrangement are the differences in the web tension of the endless web 1 extremely low.

The storage carriage displacement drive 48 is conveniently applied with a desired torque. The torque of the storage carriage displacement drive 48 corresponds in particular to a setpoint specification by the control device 60. The speed specification of the storage carriage displacement drive 48 is advantageously greater than the sum of all delays that occur during operation of the splicing arrangement.

For example, when the first brake unit 54 brakes with a braking force of 600 N and the storage carriage 42 is desired to have a force of 400 N, the differential force of 200 N is supplied by the web tension control roller 37. By the first brake unit 54 is virtually overbrake. The web tension-influencing roller 37 is braked, so to speak.

The above explanations apply analogously when the second unwinding device 7 is currently active and then the finite first material web 2 is to be attached to the terminating second material web 5 that is to be completed. It is referred to.

Claims (15)

Splice arrangement for splicing material webs (2, 5), comprising a) a roll-off arrangement (4, 7) for unrolling a finite first material web (2) from a first material roll (3) or a finite second material web (5) from a second material roll (6), b) a brake arrangement (54, 57) for applying a braking force to the unrolling arrangement (4, 7) and / or the rolling-off finite material web (2, 5), c) a connecting arrangement (18) for connecting the finite first material web (2) and the finite second material web (5) to an endless material web (1) during a splicing operation, d) a storage carriage (42) for the uninterrupted conveying of the endless material web (1), e) at least one of the storage carriage (42) upstream material web tension influencing device (37, 39) for influencing a web tension of the endless material web (1), and f) an actuator (60), the i) is in signal communication with the at least one material web tension influencing device (37, 39) for actuating the same. Splice arrangement according to claim 1, characterized in that the braking force is chosen such that the at the rolling assembly (4, 7) prevailing web tension of the respective rolling web (2, 5) greater than a target web tension of the endless web (1) on the Storage Cart (42) is. Splice assembly according to claim 1 or 2, characterized in that the at least one material web tension influencing device (37, 39) a difference between the web tension of the respective finite material web (2, 5) prevailing at the Abrollanordnung (4, 7) and a target web tension the endless web (1) on the storage carriage (42) compensates. Splice arrangement according to one of the preceding claims, characterized by a storage carriage displacement device (47) for displacing the storage wagon (42). Splice arrangement according to claim 4, characterized in that the storage carriage displacement device (47) comprises at least one storage carriage displacement drive (48), wherein preferably during operation, a torque of the at least one storage carriage displacement drive (48) a setpoint specification, in particular by the actuating device (60 ), corresponds. Splice arrangement according to claim 4 or 5, characterized in that the actuating device (60) is in signal communication with the storage carriage displacement device (47) for actuating the same. Splicing arrangement according to one of the preceding claims, characterized by at least one position sensor (53) for detecting a respective position of the storage carriage (42), wherein the at least one material web tension influencing device (37, 39) Storage carriage (42) actuated in dependence on the detected position of the storage carriage (42). Splice arrangement according to one of the preceding claims, characterized in that the at least one material web tension influencing device (37, 39) by changing the web tension of the endless material web (1) holds the storage carriage (42) in its zero position or the storage carriage (42) in this relocated. Splicing arrangement according to one of the preceding claims, characterized in that the at least one material web tension-influencing device (37, 39) comprises at least one brakeable and / or acceleratable material web tension-influencing roller (37) for engaging the endless material web (1). Splicing arrangement according to claim 9, characterized in that the at least one material web tension-influencing device (37, 39) has at least one roller drive (39) connected to the at least one material web tension-influencing roller (37) for accelerating and / or braking the at least one material web. Tension-influencing roller (37). Splice arrangement according to claim 10, characterized in that the at least one roller drive (39) provides for the web tension of the endless material web (1) desired on the storage trolley (42). Splice arrangement according to claim 10 or 11, characterized by at least one rotational speed sensor (40) for detecting a rotational speed the at least one roller drive (39) and / or the at least one material web tension-influencing roller (37). Splice arrangement according to one of the preceding claims, characterized in that the actuating device (60) with the brake assembly (54, 57) for actuating the same is in signal communication. Splice arrangement according to one of the preceding claims, characterized in that the braking force of the brake assembly (54, 57) via a splicing operation is substantially constant. Method for splitting finite material webs (2, 5), in particular by means of a splice arrangement according to one of the preceding claims, comprising the steps: Rolling a finite first material web (2) from a first material roll (3) or a finite second material web (5) from a second material roll (6) by means of a roll-off arrangement (4, 7), Applying a braking force to the unrolling arrangement (4, 7) and / or to the rolling-off finite material web (2, 5) by means of a brake arrangement (54, 57), - connecting the finite first material web (2) and the finite second material web (5) in a splicing operation to form an endless material web (1) by means of a connecting arrangement (18), - Influencing a web tension of the endless material web (1) by means of at least one a storage carriage (42) upstream material web tension influencing device (37, 39), and - Actuating the at least one material web tension influencing device (37, 39) by means of an actuating device (60).

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