EP2679525B1 - Device for automatically opening the roll within a roll-change device and roll change device with such an opening device - Google Patents

Description

The invention relates to a device designed and arranged for automatic opening within a Bobinenwechselvorrichtung of reel locks, comprising a Öffnerermechanismus Öffnerkopfbetätigung, wherein the Öffnermechanismus is associated with a Öffnerkopfbewegung drive unit between a waiting position and a working position.

Furthermore, the invention relates to a Bobinenwechselvorrichtung for feeding at least one endless web to a downstream machine, comprising at least two by means of a drive in each case in two directions rotatably driven Bobinenaufnahmen, a splicing station for connecting a running from a first reel of material with a running from a second reel Material web, deflection and / or guide rollers for the withdrawn material webs, a controller for automatically controlling the Bobinenwechselvorrichtung and at least one device, designed and set up for automatically opening bobbin locks.

In the tobacco processing industry, various devices and machines, such as strand making machines, packaging machines, or other machines for making rod-shaped articles, or for wrapping or packaging these articles and their packages, require feeding endless webs of material for continuous production operation. The webs made of different materials, such as plain or coated cigarette, covering and Filterümhüllungspapier, polypropylene film, painted and / or metallized and / or in intaglio printing printed inside wrapping paper, aluminum foil, lacquered and / or metallized and / or printed blanket, and serve as wrapping material for rod-shaped articles or packaging, are usually on rolls, the so-called reels, wound and have a finite length. The material webs can be formed identically both on their inside and on their outside. But it is also possible that the inside and the outside of a material web are formed differently and / or coated, for example, with different surface structures. For uninterrupted production, a continuous material web on the running reel and a tapered web of a full bobbin to an endless web during operation, so quasi online, connected to each other. The joining of such material webs, which is also referred to as splicing, can be realized by different joining techniques, such as knurling, embossing, by means of adhesive tapes, double-sided adhesive strips or seals.

Typically, the wound webs are fixed to the reel with their free ends on a new, full reel to prevent unwanted unwinding, e.g. during transport and / or storage. This fixation of the free end of the web, e.g. achieved by gluing and / or embossing and is called Bobinenschloss, must be solved or opened before splicing. In other words, the free end of the material web must be loosened and guided in the direction of the splicing station. For this purpose, devices already exist which are designed and set up for automatic opening within a reel-changing device. In the known devices, however, the reel lock can only be opened in one direction of rotation. This means that the bobbins can only be picked up in one direction, namely predetermined by the reel lock, on corresponding bobbin shots the Bobinenwechselvorrichtung. The material web can thus be used either only from the inside or only from the outside.

Such known devices as in the document EP 0 539 983 1, with the features of the preamble of claim 1, have an opener mechanism adapted to open a reel lock from a standby position in which the opener mechanism is spaced from the reel in a working position, in which the opening mechanism is close to the reel or in contact with the reel, and is movable back. However, these devices have only a single, and exclusively a single function point associated Öffnerkopf. A workstation is the location or position where the opener function is provided by the automatic opening device. In the assembled state of such a device for automatic opening within a Bobinenwechselvorrichtung of Bobinenschlössern in a Bobinenwechselvorrichtung the function point is determined by the mounting position. Since the known devices are set up only to open a reel lock in one direction because of the establishment of a single workstation, the reel lock or its position / position thus determines the placement or the Auflegerichtung the reels on the Bobinenaufnahmen. Thus, only the use of a single material page is given. Use of the "other" material page is excluded.

The bobbin locks belong, as already described, to the bobbins, wherein the bobbins can have different windings. This means that in the case of the bobbins, on the one hand, the inside and outside of the material web can already be reversed during the winding. On the other hand, a different winding can be generated by the reversed or reversed placing the bobbins on the Bobinenaufnahmen. In one case, the processing takes place in a clockwise direction. In the other case, the processing takes place in the counterclockwise direction. As a result, the bobbins can thus have opposing windings, such that the material web to be spliced passes from opposite inlet sides into the region of the automatic opening device. With conventional devices for automatically opening the bobbin locks, so-called Bobinenschlossöffnervorrichtungen, this problem can not be solved.

The invention is therefore based on the object to provide a flexible device for opening bobbin locks regardless of the position or orientation of the bobbin locks. The task continues to be to propose a corresponding Bobinenwechselvorrichtung.

This object is achieved by a device having the features mentioned in the fact that the device for automatic opening of Bobinenschlössem belonging to the device with opposing windings of the material webs bobbins, two opposing windings associated functional points, which is optional for the operation of the said opener mechanism are arranged with at least one Öffnerkopf. This is a surprisingly simple way quasi a dual opening of the bobbin locks ensured. In other words, the device according to the invention makes it possible to open each bobbin independently of the position and orientation of the bobbin lock, since a plurality of functional points set up and aligned with the opposing windings of the bobbins and / or opposing directions of rotation of the bobbins are provided. By means of the opening mechanism with the at least one opener head, virtually all the workstations can be "operated". The bobbins can thus be placed by the inventive device in any position or orientation on the Bobinenaufnahmen. With the device according to the invention both opening directions can be provided, without conversion measures on the Bobinenwechselvorrichtung.

An expedient development of the invention is characterized in that each Öffnerkopf a means for loosening and / or threading the free end of the web of the reel and a means for receiving and / or holding the dissolved and / or threaded free end of the web to form a single pliers with the free end of the web facing clamping opening comprises. As a result, the free end of the material web can be "captured" particularly well. By means of loosening and / or threading the fixation is effectively solved, so opened the reel lock. With the means for receiving and / or holding the dissolved and / or threaded free end of the web in conjunction with the means for loosening and / or threading is reliably guided in the direction of the splicing station. This embodiment provides a simple and secure automatic opening solution. The fact that the clamping opening is directed in each case in the direction of the reel lock and thus the free end of the material web, a reliable opening of each reel lock is supported.

Advantageously, the means for receiving and / or holding and for releasing and / or threading relative to each other for clamping the material web towards each other and for releasing the material web are formed away from each other movable. With this forceps effect, the free ends are quick and safe to open and grip. For this purpose, the opening mechanism in the region of one of the two functional points in its working position, so that the means for loosening and / or threading on the outer contour of the reel slides along until it is between the free end of the web and the bobbin body with the still wound web. Once the free end is "captured", the single pliers closes by means of suitable actuating and / or control means by the relative movement between the means for loosening and / or threading on the one hand and the means for receiving and / or holding the other. The clamped free end of the material strip can then be guided in the direction of the splicing station.

A particularly preferred embodiment is characterized in that a Öffnerkopf is arranged at each of the two functional points, wherein the Öffnerköpfe are mutually aligned in mirror image. By this butterfly-shaped arrangement of the two Öffnerköpfe, so the provision of two Öffnerköpfen with mutually averted clamping openings, a quick switching between the two functional units can be realized. In other words, the opening mechanism is configured to operate two NC heads. The two opener heads are to be put into operation alternately, depending on which inlet side the material webs to be spliced enter into the region of the device.

Conveniently, the two Öffnerköpfe be controlled separately with respect to their movement between a waiting position and a working position and / or relative movement between the means for releasing and / or threading and the means for receiving and / or holding. This advantageous embodiment allows the individual operation of the two Öffnerköpfe, whereby a precise and quick handling is guaranteed.

A further advantageous embodiment is characterized in that the opening mechanism has a single Öffnerkopf, which is pivotable about an axis by at least 180 ° back and forth for operation in the two functional points. Due to the fact that only a single breaker head operates both workstations, that is, in each case moved into a different functional position, an easy handling is created.

Advantageously, the drive unit comprises a servomotor and / or a pneumatic cylinder unit. With a servomotor and / or a pneumatic cylinder unit, the opener mechanism with one opener head or two opener heads can be rapidly and precisely moved between the waiting position and the working position.

A development according to the invention is characterized in that the drive unit is arranged on a movable carriage, such that the opening mechanism can be moved optionally in the X direction and / or Y direction and / or Z direction. This linear movability along one axis or two or three axes with one degree of freedom or two or three degrees of freedom enables the simple and precise positioning of the workstations. In other words, the position of the device for automatically opening the reel locks can be adapted to the position of the reels or the reel locks.

The object is also achieved by a Bobinenwechselvorrichtung of the aforementioned type in that the device for automatically opening bobbin locks is designed according to one of claims 1 to 6. The resulting advantages have already been described in connection with the reel lock opener device, so reference is made to avoid repetition on the corresponding passages. By the invention, a fully automatic and variable Bobinenwechselvorrichtung is created with optional use of the inside or the outside of the webs.

A preferred embodiment of the invention Bobinenwechselvorrichtung is characterized in that additional deflection and / or guide rollers are provided, such that each Bobinenseite is associated with at least one additional deflection and / or guide roller. Thus, the course of the material webs within the Bobinenwechselvorrichtung for each use, ie the guiding on the inside or the outside of the material webs is ensured.

Fig. 1

eine schematische Darstellung einer Bobinenwechselvorrichtung, bei der die Bobinen im Uhrzeigersinn angetrieben sind,

Fig. 2

eine schematische Darstellung einer Bobinenwechselvorrichtung, bei der die Bobinen entgegen dem Uhrzeigersinn angetrieben sind,

Fig. 3

eine äußerst schematische Darstellung einer Vorrichtung zum automatischen Öffnen von Bobinenschlössern mit zwei Funktionsstellen,

Fig. 4

eine weitere Ausführungsform der Vorrichtung zum automatischen Öffnen von Bobinenschlössern mit einem Öffnermechanismus mit einem Öffnerkopf, der zwischen zwei Funktionsstellen hin und her bewegbar ist,

Fig. 5

eine weitere Ausführungsform der Vorrichtung zum automatischen Öffnen von Bobinenschlössern mit einem Öffnermechanismus mit zwei getrennt gelagerten Öffnerköpfen, so dass jeder Funktionsstelle ein eigener Öffnerkopf zugeordnet ist,

Fig. 6

eine weitere Ausführungsform der Vorrichtung zum automatischen Öffnen von Bobinenschlössern mit einem Öffnermechanismus mit zwei gemeinsam gelagerten Öffnerköpfen, so dass jeder Funktionsstelle ein eigener Öffnerkopf zugeordnet ist, und

Fig. 7

eine schematische Darstellung einer Bobinenwechselvorrichtung mit einer Spleißstation und in Förderrichtung T vorgelagerten Vorrichtungen zum automatischen Öffnen der Bobinenschlösser.

Further expedient and / or preferred features and developments of the device for automatic opening of the bobbin locks and the bobbin changing device will become apparent from the dependent claims and the description. Particularly preferred embodiments will be explained in more detail with reference to the accompanying drawings. In the drawing shows:

Fig. 1

a schematic representation of a Bobinenwechselvorrichtung in which the bobbins are driven in a clockwise direction,

Fig. 2

a schematic representation of a Bobinenwechselvorrichtung in which the bobbins are driven in the counterclockwise direction,

Fig. 3

a very schematic representation of a device for automatically opening bobbin locks with two functional points,

Fig. 4

a further embodiment of the device for automatically opening bobbin locks with an opening mechanism with a Öffnerkopf, which is movable between two working points back and forth,

Fig. 5

a further embodiment of the device for automatically opening bobbin locks with an opening mechanism with two NC opener heads mounted separately, so that each workstation is assigned its own NC contact head,

Fig. 6

a further embodiment of the device for automatically opening bobbin locks with an opener mechanism with two NC opener heads, so that each workstation is assigned its own opener head, and

Fig. 7

a schematic representation of a Bobinenwechselvorrichtung with a splicing station and upstream in the conveying direction T devices for automatically opening the bobbin locks.

The embodiments shown in the drawing are used to open bobbin locks in bobbins of wrapping paper or for supplying an endless web of wrapping paper to a strand-making machine. Of course, the invention also relates to devices for opening bobbin locks in reels with material strips of other materials and for feeding endless webs of material to other machines, such as packaging machines.

For a better understanding of the invention is in the FIG. 1 schematically illustrates a Bobinenwechselvorrichtung 10 with devices 11 which are designed and set up for automatic opening within the Bobinenwechselvorrichtung 10, and with a splicing station 12. In the FIG. 1 the reels 13 are driven in a clockwise direction. The presentation in the FIG. 2 corresponds essentially to the illustration according to FIG. 1 , with the difference that the reels 13 are driven in the counterclockwise direction.

The invention relates to the device 11, which is designed and set up for the automatic opening of reel locks 14. The device 11 comprises an opening mechanism 15 for Öffnerkopfbetätigung, wherein the Öffnermechanismus 15 is associated with a drive unit 16 for Öffnerkopfbewegung between a waiting position and a working position.

This device 10 according to the invention is characterized in that the device 10 for automatically opening bobbin locks 14 belonging to the device 10 with opposing windings of the webs 23 bobbins 13, two opposing windings associated functional points 17, 18 which optionally for operation of said opener mechanism 15 with at least one Öffnerkopf 19 are arranged. The basic idea of the invention therefore lies in the provision of two functional points 17, 18 which can be selectively operated or operated by the opening mechanism 15. It is crucial that the two functional points 17, 18 are set or aligned with the opposing windings of the reels 13, so that with one and the same device 11 all bobbin locks 14 regardless of the drive direction of the reels 13 and regardless of the laying or the Direction of placing the bobbins 13 on Bobinenaufnahmen 20 of the Bobinenwechselvorrichtung 10 can be opened.

Each opener head 19 comprises a means 21 for releasing and / or threading the free end 22 of the material web 23 from the reel 13. This means 21 may be e.g. a suction element or a winding tube. Particularly preferably, the means 21 is a scraper 24 with a support body 25 and a tab 26. By means of the tab 26, which is preferably wedge-shaped, the reel lock 14 can be easily opened. In other words, the tab 26 is designed and set up to loosen and thread the free end 22 of the material web 23 which is still fixed on the bobbin body. The opener head 19 further comprises means 27 for receiving and / or holding the loosened and / or threaded free end 22 of the material web 23. The means 27 may e.g. be designed as a jaw or closing strip. Preferred is a design as a clamping bolt 28. The means 21 and 27 form a single pliers with a clamping opening 29, which faces the free end 22 of the material web 23 respectively.

For clamping and releasing the material web 23, the means 21 and 27 for receiving and / or holding and for releasing and / or threading are formed relative to each other and movable away from each other. Preferably, the means 21 for releasing and / or threading the standing part, in particular because it is in the working position preferably rests against the reel 13. The means 27 for receiving and / or holding is movable, for example by means of a pneumatic cylinder 30 from the release position to the clamping position and back relative to the means 21. However, the relative movement to actuate the single pliers can also be solved differently in design, for example by servo drives or the like.

In a particularly preferred embodiment, as for example in the FIGS. 5 and 6 is shown, an opener 19 is arranged at each of the two functional points 17, 18, wherein the two Öffnerköpfe 19 are mirror images of each other. In the embodiments shown, the two Öffnerköpfe 19 are mirrored with their clamping openings 29 about an imaginary mirror axis S. In other words, the opening mechanism 15 comprises two Öffnerköpfe 19, which are preferably of identical design, and their terminal openings 29 facing away from each other. In the embodiment according to the FIG. 5 the Öffnerköpfe 19 are each arranged on a separate pivot body 31, 32. These pivoting bodies 31, 32 are movable by means of the drive unit 16, namely between the waiting position and the working position. In the embodiment according to FIG. 6 the two Öffnerköpfe 19 are arranged on a common pivot body 33 which is movable by means of the drive unit 16. The device 11 and in particular the drive means 16 are connected to a controller not explicitly shown. Preferably, the two Öffnerköpfe 19 with respect to their movement between a waiting position and a working position and / or with respect to the relative movement between the means 21 for releasing and / or threading and the means 27 for receiving and / or holding separately controllable. For example, in each case only the respective function point 17 or 18 is activated, which is currently set up for the operation of the opening mechanism 15. The control of the device 11 can of course also via control means of other devices or machines, such as the Bobinenwechselvorrichtung 10, take place. Instead of the swivel bodies 31, 32, linear drives, linearly guided actuating means or the like can optionally also be used.

In a further embodiment of the invention according to FIG. 4 For example, the opener mechanism 15 has a single opener head 19, which is pivotable about at least 180 ° about an axis D for operation in the two functional locations 17, 18. More specifically, the entire unit of drive unit 16, swivel body 34 and NC head 19 is rotatable or pivotable. In another embodiment, only the Öffnerkopf 19 with respect to its orientation or the orientation of the clamping opening 29 is variable.

The drive unit 16 preferably comprises a servo drive and / or a pneumatic cylinder unit. Of course, other drive or actuating mechanisms can be used. Regardless of the number of Öffnerköpfe 19, there is the possibility that the drive unit 16 is arranged on a movable carriage 35. As a result, the exact positioning of the device 11 and the functional points 17, 18 and the adjustment of the positioning when switching between the workstations 17, 18 are facilitated. The carriage 35 may have one or more degrees of freedom. For this purpose, the carriage 35 is optionally in the X direction and / or Y direction and / or Z direction (see FIG. 4 ) Trained trained and set up eg by means of servo drives. This training is for the embodiments according to the FIGS. 5 and 6 also optionally provided.

The invention further relates to the Bobinenwechselvorrichtung 10 for feeding at least one endless material web 36 to a downstream machine, the at least two by means of a drive 37, 38 each in both directions rotatably driven Bobinenaufnahmen 20, the splicing station 12 for connecting a running from a first reel 13 material web 23 with a running from a second reel 13 material web 23, deflection and / or guide rollers 39 for the withdrawn material webs 23, a controller 40 for automatically controlling the Bobinenwechselvorrichtung 10 and at least one device 11, which is designed and set up for automatic opening of the reel bolls 14 is included. The Bobinenwechselvorrichtung 10 is characterized in that the device 11 is designed for automatically opening the reel locks according to one of claims 1 to 8. In other words, the apparatus 11 for opening the reel bolls 14 disposed in the bobbin changing apparatus 10 is formed as previously described in detail.

In the FIG. 7 a central controller 40 is provided, to which the components of the Bobinenwechselvorrichtung 10, the device 11 for automatically opening the reel locks 14 and the splicing station 12 are connected. The control can also be done locally. The control of the device 11, ie in particular the driving of the respective functional point 17 or 18, preferably takes place as a function of the position of the bobbins 13 on the Bobinenaufnahme 20, so how around the reels 13 are placed on the Bobinenaufnahmen 20, and / or the direction of rotation of the Bobbins 13, which is why the controller 40 also receives information regarding the direction of rotation of the reels 13 by means of suitable elements, for example by means of rotary encoders.

In addition to the deflection and / or guide rollers 39, additional deflection and / or guide rollers 41 are provided, such that each coil side is assigned at least one additional deflection and / or guide roller 41. In other words, deflecting and / or guide rollers 39, 41 are arranged on both sides of the drawn-off material web 23, that is to say on the front side and the rear side.

Claims (8)

1. Apparatus (11), designed and adapted for automatic opening within a bobbin changeover apparatus (10) of bobbin wrapper tabs (14) by means of an opener head (19), comprising an opener mechanism (15) for opener head actuation, wherein the opener mechanism (15) is assigned a drive unit (16) for opener head movement between a waiting position and a working position, and wherein the apparatus (11) for automatic opening of bobbin wrapper tabs (14), which belong to bobbins (13) which can be conveyed into the apparatus (11) with windings in opposite directions of the material webs (23), has two functional positions (17, 18) assigned to the windings in opposite directions, which functional positions (17, 18) are set up optionally for the operation of said opener mechanism (15) with at least one opener head (19), characterised in that an opener head (19) is arranged at each of the two functional positions (17, 18), wherein the opener heads (19) are aligned in mirror-symmetry to one another or that the opener mechanism (15) has a single opener head (19) which can be pivoted to and fro about an axis D by at least 180° for operation in the two functional positions (17, 18).
2. Apparatus according to claim 1, characterised in that each opener head (19) comprises a means (21) for releasing and/or threading the free end (22) of the material web (23) from the bobbin (13) and a means (27) for receiving and/or holding the released and/or threaded free end (22) of the material web (23) for formation of a single clamp with a clamping opening (29) which faces towards the free end (22) of the material web (23).
3. Apparatus according to claim 2, characterised in that the means (21, 27) are formed to be movable towards one another for receiving and/or holding and for releasing and/or threading relative to one another for clamping of the material web (23) and away from each other for release of the material web (23).
4. Apparatus according to claim 1, characterised in that the two opener heads (19) can be controlled separately from one another in terms of their movement between a waiting position and a working position and/or in terms of the relative movement between the means (21) for releasing and/or threading and the means (27) for receiving and/or holding.
5. Apparatus according to any one of claims 1 to 4, characterised in that the drive unit (16) comprises a servomotor and/or a pneumatic cylinder unit.
6. Apparatus according to any one of claims 1 to 5, characterised in that the drive unit (16) is arranged on a movable carriage (35) in such a manner that the opener mechanism (15) is movable optionally in the X-direction and/or Y-direction and/or Z-direction.
7. Bobbin changeover apparatus (10) for the supply of at least one endless material web (36) to a downstream machine, comprising at least two bobbin receptacles (20) which can be rotationally driven by means of a drive (37, 38) respectively in both directions, a splicing station (12) for connecting a material web (23) running off from a first bobbin (13) to a material web (23) running off from a second bobbin (13), return and/or guide rollers ( (39) for the pulled-off material webs (23), a control unit (40) for automatic control of the bobbin changeover apparatus (10) as well as at least one apparatus (11), designed and adapted for automatic opening of bobbin wrapper tabs (14), characterised in that the apparatus (11) is designed for automatic opening of bobbin wrapper tabs (14) according to any one of claims 1 to 6.
8. Bobbin changeover apparatus according to claim 7, characterised in that additional return and/or guide rollers (40) are provided in such a manner that each bobbin side is assigned at least one additional return and/or guide roller.

Images