DE102015113496A1 - Supply roll with at least one predetermined breaking point and method for handling such a supply roll - Google Patents

Abstract

The invention relates to a supply roll (1) with a roll core (3), on which flat and / or strip material (5) is carried with a plurality of windings. Further, the supply roll (1) comprises at least one in the circumferential course of the supply roll (1) formed predetermined breaking point (15) which is separable to release flat and / or strip material (5) from the supply roll (1). A free end region (10) of the flat and / or strip material (5) is fixed via at least one fixation to a layer (14) of the flat and / or strip material (5) which adjoins the free end region (10) and which at least one fixation the at least one predetermined breaking point (15) in a winding direction (WR) of the flat and / or strip material (5) is arranged downstream.

Description

The present invention relates to a supply roll with at least one predetermined breaking point and a method of circumference with such a supply roll.

Such stock rolls can be used for example in the field of packing technology. Apparatuses are known which provide uninterrupted flat and / or strip material in order to wrap articles with the flat and / or strip material and to combine them in this case. For example, the flat and / or strip material may be formed as a shrink film, wherein a plurality of beverage containers are wrapped by means of the shrink film and combined into containers.

If the supply of flat and / or strip material of a roll is exhausted, the roll must be replaced by another roll with new flat and / or strip material in order to continue a packaging process and preferably to perform uninterrupted.

Devices for an uninterrupted packing process as well as corresponding supply rolls, which can be used for an uninterrupted packing process, are known for example from US Pat DE 195 22 110 A1 known. In the device known from DE-application two parallel shafts are provided, sit on which supply rolls. From the supply rolls shrink film is unwound and placed around articles. The articles then pass through a shrink tunnel. If the stock of shrink film of a roll is exhausted, then shrink film of another roll is connected to the strip supply of the first roll by means of welding.

If the shrink films of two rolls are to be joined by means of welding, a free end region of a new roll is first to be removed from this and, for the purpose of welding, to be moved in the direction of the further roll.

Practice has shown that there are sometimes problems when the free end of flat and / or strip material is to be detected in order to then deduct this from the supply roll. Often, the free end area unintentionally and independently unwinds from the supply roll before it is inserted into a packaging machine. Manual alignment must then be done to properly align the free end area. Also, the position of the free end region may not always coincide with an expected target position, which causes further problems in detecting the free end region.

For automated or semi-automated processes, it would be desirable to have supply rolls or processes which at least partially avoid or reduce such problems when replacing supply rolls.

An object of the invention can therefore be seen to provide a supply roll and a corresponding method for dealing with such supply rolls available, by means of which problems when removing flat strip material can be at least reduced. The supply roll should also have a simple structure. The process should be easy to implement.

The above objects are achieved by a supply roll and by a method for handling supply rolls comprising the features in the claims 1, and 12. Further advantageous embodiments are described by the subclaims.

The supply roll has a roll core, which may be hollow cylindrical and may be formed by cellulose or plastic. Furthermore, the supply roll comprises flat and / or strip material which is carried by the roll core with a multiplicity of windings. The flat and / or strip material may be formed for example by shrink film or stretch film.

In addition, at least one formed in the circumferential course of the supply roll predetermined breaking point is provided, which is separable to release flat and / or strip material from the supply roll. The predetermined breaking point can be formed, for example, by flat and / or strip material in a certain section has a lower thickness compared to other sections, wherein the flat and / or strip material tears in this area at a defined force. In particularly preferred embodiments, however, the predetermined breaking point can be formed as a perforation, as described below.

A free end region of the flat and / or strip material is fixed via at least one fixation on a position adjacent the free end region of the flat and / or strip material, which at least one fixation of the at least one predetermined breaking point in a winding direction of the flat and / or Subordinate strip material. For example, the at least one fixing may be formed as an adhesive connection, via which the free end region is fixed at the position adjacent to the free end region. The adhesive bond may be between the free end region and the layer adjacent to the free end region.

In preferred embodiments, the supply roll can comprise at least one contact region formed in the peripheral profile of the supply roll for a take-off means designed for pulling off the flat and / or strip material, which at least one contact region on the supply roll is visually recognizable and / or optically detectable.

For the design of the trigger means, as it is also part of the method described below, numerous possibilities are conceivable. For example, the extraction means may be formed as a pneumatic suction and / or gripping device. In addition, embodiments are conceivable in which the withdrawal means is designed as a magnetic rod, which optionally enters into contact with a fixed in at least one contact area metal foil and / or paint in order to receive or detect the free end region of the flat and / or strip material ,

Furthermore, it may be that the at least one contact region of the predetermined breaking point is arranged upstream in the winding direction of the flat and / or strip material. In this case, several or at least two contact regions can be provided, which are positioned on a common axis, which is oriented parallel to the longitudinal axis of the supply roll, on the supply roll.

Also, the supply roll may comprise at least one adhesive label which projects beyond an end edge of the free end region and which fixes the free end region of the flat and / or strip material at the position adjacent to the free end region. The at least one adhesive label can thus form an adhesive bond on a broadside surface pointing in the direction of the free end region, via which the at least one adhesive label fixes the free end region at the position adjacent to the free end region.

In preferred embodiments, it may be that the at least one adhesive label is seated on the outside of the free end region of the flat and / or strip material. In further embodiments, the at least one adhesive label can be arranged at least in sections between the free end region of the flat and / or strip material and the layer of flat and / or strip material adjacent to the free end region. The at least one adhesive label may in this case form on opposite broad side surfaces a respective adhesive bond, via which the at least one adhesive label fixes the free end region of the flat and / or strip material at the position of the flat and / or band material adjacent to the free end region.

For example, the at least one adhesive label may be fixed to a broadside surface facing away from the roll core of an outer layer of the flat and / or strip material. Advantageously, the free end region can retain its relative position on the supply roll through the adhesive bond or through the at least one adhesive label. The risk of unintentional unwinding of flat and / or strip material from the supply roll is thereby reduced. The adhesive bond formed between the free end region and the at least one adhesive label may have a lower adhesive force than the adhesive bond formed between the at least one adhesive label and the layer adjacent the free end region.

Furthermore, the supply roll may comprise at least one functional marking, which is applied with a defined relative position to the free end region of the flat and / or strip material and / or introduced into the free end region of the flat and / or strip material. The at least one contact region can be visually recognizable and / or optically detectable via the at least one functional marking.

In conceivable embodiments, the at least one functional mark can be formed by the at least one adhesive label. For example, the at least one functional mark may consist of a print job which is applied to the at least one adhesive label. It is also conceivable that the at least one adhesive label refers to the at least one contact region by means of its shaping.

Furthermore, it may be that the at least one functional marking or optionally at least one lot of the at least one adhesive label is arranged downstream of the predetermined breaking point in the winding direction of the flat and / or strip material.

The at least one functional marking may be formed at a specific position in the free end region of the flat and / or strip material, so that information about the relative position of the free end region can be visually recognized via the at least one functional marking and the respective at least one contact region, which may be has a certain orientation or relative position relative to the free end region, can be determined. In further embodiments, the at least one function marking may have a symbolism and / or an optical reference which directly refers to the at least one contact region. For the implementation of the method according to the invention may optionally be provided a sensor which detects the position of the at least one function mark and the withdrawal means optionally on the at least one Contact area touches down to receive the free end of the flat and / or strip material.

It is also conceivable that the at least one functional mark consists of a print job, which is applied in defined relative position to at least one contact area on the flat and / or strip material. The print job may comprise, for example, a mark formed as a line which extends parallel to a terminal edge of the outer free end region of the flat and / or strip material. Accordingly, at least one functional marking in the region of a free end or in the free end region can be introduced into the flat and / or strip material and / or applied to the flat and / or strip material.

At least one predetermined breaking point can be formed as part of the at least one adhesive label. Further, at least one predetermined breaking point can be formed as part of the flat and / or strip material. In this case, in particular embodiments have proven, in which the at least one predetermined breaking point is formed as a perforation.

In addition, the supply roll may comprise at least one spacer. The at least one spacer may be interposed between the free end region of the flat and / or strip material and the layer adjacent the free end region of the flat and / or strip material, that over the at least one spacer a certain distance between the free end region and the free End region adjacent position of the flat and / or strip material is made.

For example, one or more spacers may be formed as an adhesive bond or gluing point, which adhesive bond or gluing point is located between the free end region and the position adjacent to the free end region. The adhesive bond or the adhesive point can adhere to the free end region and / or at the position adjacent to the free end region.

In conceivable embodiments, the at least one spacer may extend at least partially or completely over the entire depth of the supply roll, but not project laterally from the supply roll or from the flat and / or strip material.

In addition, embodiments in which the at least one spacer has, at least in some areas, a rigidity which is designed to be larger than the rigidity of the flat and / or strip material, have proved to be useful.

For example, the at least one spacer made of cellulose or cardboard can be formed. In conceivable further embodiments, the at least one spacer can be made of plastic and, if appropriate, have the rigidity just described at least in regions, which is designed to be larger than the rigidity of the flat and / or strip material.

The invention also relates to a method for handling a supply roll. Features which have already been described above for the supply roll can also be provided in conceivable embodiments of the method. Furthermore, features of the method described below can be used for conceivable embodiments of a supply roll according to the invention.

As part of the process, the supply roll is inserted into an installation position of a packaging machine. In the installation position, a mandrel or retaining mandrel may be provided on which the supply roll is pushed upon insertion into the installation position. The mandrel or retaining mandrel can fix the supply roll hereupon clamp.

After the supply roll has been inserted into the installation position, a take-off means, for example a rod or a pneumatic suction head, is placed on the supply roll in the circumferential direction.

Subsequently, a releasable connection between the take-off means and the flat and / or strip material is produced. For example, for this purpose, the pneumatic suction head generate negative pressure to temporarily fix the flat and / or strip material or the free end region of the flat and / or strip material. It is also conceivable here that the detachable connection is not produced directly between the withdrawal means and the flat and / or strip material. For example, a releasable connection between the withdrawal means and an adhesive label can be produced, which is connected to the free end region of the flat and / or strip material and preferably glued.

After the releasable connection has been made, the removal means is moved in the direction of the supply roll, as a result of which the predetermined breaking point is separated and flat and / or strip material is unwound from the supply roll. The predetermined breaking point can be formed here as a perforation. The fixation between the free end region and the position adjacent to the free end region can remain when the withdrawal means move.

In preferred embodiments of the method according to the invention, the previously described at least one functional marker the supply roll are optically detected by means of sensors.

Furthermore, the at least one contact region can be ascertained taking into account the optical detection, and the removal means can be placed on the at least one contact region in terms of time.

In addition, a detachable connection between the take-off means and the supply roll is produced at the at least one contact region and, following this time, the take-off means is moved in the direction of the supply roll.

In the following, embodiments of the invention and their advantages with reference to the accompanying figures will be explained in more detail. The proportions of the individual elements to one another in the figures do not always correspond to the actual size ratios, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.

1 shows a schematic perspective view of a first embodiment of a supply roll according to the invention;

2 shows a schematic perspective view of another embodiment of a supply roll according to the invention.

3 shows individual steps, as they may be present in a conceivable embodiment of the method according to the invention.

For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the invention may be configured and are not an exhaustive limitation.

1 shows a schematic perspective view of a first embodiment of a supply roll according to the invention 1 , The supply roll 1 has a roll core 3 , which is formed here by cellulose or plastic.

Next is flat and / or strip material 5 to recognize which with a variety of windings from the roll core 3 will be carried. In flat and / or band material 5 or in a free end area 10 of the flat and / or strip material 5 there is a predetermined breaking point 15 that as a perforation 26 is trained. The nominal break point 15 or perforation 16 extends over the entire depth of the supply roll 1 ,

The free end area 10 of the flat and / or strip material 5 is at the free end area 10 neighboring location 14 fixed or fixed. The fixation is in the embodiment 1 via an adhesive label 8th provided. The adhesive label 8th or over the adhesive label 8th provided fixation is the target break point 15 or the perforation 16 in a winding direction WR of the flat and / or strip material 5 downstream. The adhesive labels 8th are adjacent to each other on a trailing edge 12 of the flat and / or strip material 5 or the free end region 10 positioned. Next sit the adhesive labels 8th outside on the free end area 10 on.

In addition, several are in the circumferential course of the supply roll 1 or on the free end area 10 positioned contact areas 6 to recognize that for a for stripping the flat and / or strip material 5 trained deduction means are provided. The adhesive labels 8th are present as function marks 7 educated. The position of the function marks 7 can be detected via a sensor or an optical detection device not shown in the present patent application. A control device which is in communication with the sensor system or the optical detection device can, with the aid of the detected position of the function markings 7 the contact area 6 determine and then the withdrawal means, which may be formed, for example, as at least one pneumatic suction and / or gripping device, on the contact areas 6 put on.

The contact areas 6 are the target break point 15 or the perforation 16 in the winding direction WR of the flat and / or strip material 5 upstream. After the flat and / or strip material 5 the supply roll 1 at the contact areas 6 via a deduction was recorded, the withdrawal means in the direction of the supply roll 1 to be moved. The free end area 10 of the flat and / or strip material 5 is then at the desired breaking point 15 or at the perforation 16 separated, with a lot of the free end 10 or the flat and / or strip material 5 about the adhesive labels 8th at the free end area 10 neighboring location 14 remains fixed.

One of the nominal break point 15 or perforation 16 in the winding direction WR upstream game of the free end 10 is due to a movement of the trigger and under separation of the predetermined breaking point 15 or perforation 16 from the supply roll 1 deducted.

The function marks 7 own in 1 two opposite broad side surfaces with triangular geometry. Such geometric shapes for the function marks 7 have worked well to pinpoint the contact area 6 to be able to determine.

Practice has also shown that, especially when detecting the flat and / or strip material 5 in the contact areas 6 If necessary, several adjacent layers can be fixed at the same time by negative pressure unintentionally. To counteract this problem, it may be advantageous in practice, provided at least one spacer the free end 10 of the flat and / or strip material 5 and the free end area 10 neighboring location 14 of the flat and / or strip material 5 is interposed such that the at least one spacer a certain distance between the free end portions 10 and the free end area 10 neighboring location 14 is made. The spacer can then be in the vicinity of the contact areas 6 and possibly be formed by plastic or cellulose.

2 shows a schematic perspective view of another embodiment of a supply roll according to the invention 1 , As well as the embodiment of 1 owns the supply roll 1 out 2 a roll core 3 as well as flat and / or strip material 5 , which comes with a variety of windings from the roll core 3 will be carried.

Shown is also a circumferential course of the supply roll 1 trained break point 15 which is separable to flat and / or strip material 5 from the supply roll 1 to solve. The nominal break point 15 is as a perforation 16 educated. The free end area 10 of the flat and / or strip material 5 is at the free end area 10 neighboring location 14 fixed or fixed. In the present case, the fixation is via an adhesive label 8th causes its longitudinal extent substantially the longitudinal extent of the supply roll 1 equivalent.

The adhesive label 8th surmounts the trailing edge 12 of the free end area 10 or the end edge 12 of the flat and / or strip material 5 , The nominal break point 15 or perforation 16 is part of the adhesive label 8th and the trailing edge 12 of the flat and / or strip material 5 or the free end region 10 in the winding direction WR of the flat and / or strip material 5 downstream.

To recognize further several in the circumferential course of the supply roll 1 trained contact areas 6 for a for pulling off the flat and / or strip material 5 provided withdrawal means. The contact areas 6 are the final edge 12 and the predetermined breaking point 15 or perforation 16 upstream in winding direction WR.

function marks 7 which points to the contact areas 6 refer, are in 10 not shown. It is conceivable, for example, that a sensor or optical detection device, the position of the desired breaking point 15 recognizes. The sensor or optical detection device can be in communication with a control device which, taking into account the detected position of the predetermined breaking point 15 or perforation 16 the contact area 6 determines and then a deduction on the contact areas 6 touches down. The extraction means, which may optionally be designed as a pneumatic suction and / or gripping device, then binds to the contact areas 6 and is then in the direction of the supply roll 1 moves, with the adhesive label 8th at the predetermined breaking point 15 or perforation 16 is separated.

A certain lot of the adhesive label is at breaking the predetermined breaking point 15 or perforation 16 continue with the free end area 10 in conjunction and will be together with the free end area 10 of the flat and / or strip material 5 from the supply roll 1 deducted. On the other hand, another is on an opposite side of the predetermined breaking point 15 or the perforation 16 arranged batch after separating the predetermined breaking point 15 or perforation 16 continue at the free end area 10 neighboring location 14 fixed. The next batch of adhesive label 8th , which after breaking the predetermined breaking point 15 or perforation 16 with the free end area 10 neighboring location 14 communicates with the free end area 10 neighboring location 14 from the supply roll 1 settled.

3 shows individual steps, as they may be present in a conceivable embodiment of the method according to the invention.

Thus, as part of a first process step, a supply roll 1 (see. 1 and 2 ) are used in an installation position of a packaging machine. For example, the supply roll 1 in this case be pushed onto a retaining pin.

Subsequently, a take-off means in the circumferential course on the supply roll 1 placed. The removal means can be based on the previously described at least one contact area 6 be put on.

This is a releasable connection between the trigger and the flat and / or strip material 5 produced. The releasable connection can be made, for example, by a suction and / or gripping device a free end 10 of the flat and / or strip material 5 fixed via negative pressure.

Following this time, the withdrawal means is moved away from the supply roll 1 moves, resulting in the desired breaking point 15 is separated and flat and / or strip material 5 from the supply roll 1 is handled.

The invention has been described with reference to a preferred embodiment. However, it will be apparent to those skilled in the art that modifications or changes may be made to the invention without departing from the scope of the following claims.

LIST OF REFERENCE NUMBERS

1

 supply roll

3

 roll core

5

 Flat and / or strip material

6

 contact area

7

 function marking

8th

 adhesive label

10

 Free end area

11

 hook

14

 Neighboring location

15

 Predetermined breaking point

16

 perforation

WR

 winding direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19522110 A1 [0004]

Claims (15)

Supply roll ( 1 ), comprising - a roll core ( 3 ), - flat and / or strip material ( 5 ), which with a large number of windings from the core ( 3 ) is carried, and - at least one in the circumferential course of the supply roll ( 1 ) formed predetermined breaking point ( 15 ) which is separable to flat and / or strip material ( 5 ) from the supply roll ( 1 ), wherein a free end region ( 10 ) of the flat and / or strip material ( 5 ) via at least one fixation at one of the free end regions ( 10 ) adjacent location ( 14 ) of the flat and / or strip material ( 5 ), which at least one fixation of the at least one predetermined breaking point ( 15 ) in a winding direction (WR) of the flat and / or strip material ( 5 ) is subordinate. Supply roll according to claim 1, comprising at least one in the circumferential course of the supply roll ( 1 ) trained contact area ( 6 ) for a for pulling off the flat and / or strip material ( 5 ) trained withdrawal means, which at least one contact area ( 6 ) on the supply roll ( 1 ) is visually recognizable and / or optically detectable. A supply roll according to claim 2, wherein the at least one contact area ( 6 ) of the predetermined breaking point ( 15 ) in the winding direction (WR) of the flat and / or strip material ( 5 ) is arranged upstream. Supply roll according to one or more of claims 1 to 3, comprising at least one adhesive label ( 8th ), which has a closing edge ( 12 ) of the free end region ( 10 ) and which the free end region ( 10 ) of the flat and / or strip material ( 5 ) at the free end region ( 10 ) adjacent location ( 14 ). A supply roll according to claim 4, wherein the at least one adhesive label ( 8th ) outside on the free end area ( 10 ) of the flat and / or strip material ( 5 ) is seated. Supply roll according to one or more of claims 2 to 5, comprising at least one function mark ( 7 ), which with defined relative position on the free end region ( 10 ) of the flat and / or strip material ( 5 ) and / or with a defined relative position in the free end region ( 10 ) of the flat and / or strip material ( 5 ), wherein via the at least one functional mark ( 7 ) the at least one contact area ( 6 ) is visually recognizable and / or optically detectable. A supply roll according to claim 4 or 5 and also claim 6, wherein the at least one functional mark ( 7 ) by the at least one adhesive label ( 8th ) is formed. Supply roll according to claims 4 or 5 and also 6 or 7, in which the at least one functional mark ( 7 ) of the desired separation point ( 15 ) in the winding direction (WR) of the flat and / or strip material ( 5 ) is subordinate. Supply roll according to one or more of claims 4 to 8, wherein at least one predetermined breaking point ( 15 ) as part of the at least one adhesive label ( 8th ) is trained. Supply roll according to one or more of Claims 1 to 9, in which at least one predetermined breaking point ( 15 ) as a constituent of the flat and / or strip material ( 5 ) is trained. Supply roll according to one or more of Claims 1 to 10, in which the at least one predetermined breaking point ( 15 ) as a perforation ( 16 ) is trained. Supply roll according to one or more of Claims 1 to 11, in which preferably in the vicinity of the at least one contact region ( 6 ) at least one spacer the free end region ( 10 ) of the flat and / or strip material ( 5 ) and the free end area ( 10 ) adjacent location ( 14 ) of the flat and / or strip material ( 5 ) is interposed in such a way that over the at least one spacer ( 9 ) a certain distance between the free end region ( 10 ) and the free end area ( 10 ) adjacent location ( 14 ) is made. Method for handling a supply roll ( 1 ) according to one or more of claims 1 to 12, in which - the supply roll ( 1 ) is inserted in an installation position of a packaging machine, - a take-off means in the circumferential course on the supply roll ( 1 ), - a releasable connection between the take-off means and the flat and / or strip material ( 5 ), whereupon the withdrawal means in the direction of the supply roll ( 1 ) is moved, resulting in the desired breaking point ( 15 ) is separated and flat and / or strip material ( 5 ) from the supply roll ( 1 ). Method according to claim 13 for handling a supply roll according to claim 6, in which - the at least one function mark ( 7 ) of the supply roll ( 1 ) is detected optically by means of sensor technology, - the at least one contact region ( 6 ) is determined taking into account the optical detection, - temporally on the deduction on the at least one contact area ( 6 ), - a releasable connection between the take-off means and the supply roll ( 1 ) at least one contact area ( 6 ) and - in terms of time, the removal means in the direction of the supply roll ( 1 ) is moved. A method according to claim 14, comprising a supply roll according to one or more of claims 7 to 11.

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