EP2221113A1 - Adjustment device with at least one paste nozzle for strand machines for the tobacco processing industry and strand machine with such an adjustment device - Google Patents

Abstract

The device (10) has a receiving device (13) for receiving and holding glue nozzles (11, 12), and one of the glue nozzles arranged at the receiving device. The receiving device moves the glue nozzles from a work position into a standby position and vice versa. A stop element (29) and/or an adjusting unit are provided for reproducable adjustment of the work position and different strand formats. The work position of the glue nozzles is determined by adjusting parameters, where the adjusting parameters are height and depth of the glue nozzles to strands.

Description

The invention relates to an adjusting device with at least one glue nozzle for extrusion machines of the tobacco processing industry, comprising a device for receiving and holding the or each glue nozzle and at least one glue nozzle arranged on the device, wherein the device for moving the or each glue nozzle from a working position into a Waiting position and vice versa is formed. The invention also relates to a stranding machine with such an adjustment.

Such adjustment are used as a single part or as part of a stranding machine in the tobacco processing industry and form the so-called glue station in a stranding machine, the structure is basically known, so that dispenses with an enumeration of the individual components of a strand machine. Using the example of cigarette production with a stranding machine, regardless of whether one strand or several strands are made in parallel, this means that the or each tobacco-molded strand is wrapped with a cigarette paper, the so-called wrapping paper, and this wrapping paper is before the complete Enveloping the tobacco rod glued to the glue station. For this, the glue nozzle of the glue station is in a working position. This means that the glue nozzle is preferably in contact with the wrapping paper with its nozzle tip. However, the nozzle tip can also be positioned in the working position at a small distance from the wrapping paper or pressed into the wrapping paper. From the working position, the glue nozzle is moved to a waiting position to change or clean the glue nozzle. For an optimal glue result, it is necessary to place the glue nozzle optimally in the working position in relation to the wrapping paper.

From the DE 601 07 125 T2 For example, a device is known which essentially comprises a nozzle with an application head for applying the adhesive substance. The device is mounted on a substantially cylindrical body which is rotatable about a substantially vertical axis so that the device is movable from an active adhesive position to a rest position and vice versa. In other words, the actual position of the nozzle with respect to the wrapping paper in the working position is not adjustable or adjustable. This has a particularly disadvantageous effect, especially in the case of a format change, that is to say a change in the diameter of the strand. For other adjustment means, therefore, several adjustment parameters can be changed. In particular, the height and depth of the glue nozzle can be adjusted with respect to the wrapping paper. The height defines the distance between the glue nozzle and the strand-guiding plane. With the depth of the distance / the position of the glue nozzle is defined transversely to the strand conveying direction. However, the known adjusting devices have the disadvantage that the setting parameters, ie the parameters for adjusting the position of the or each glue nozzle with respect to the strand or more precisely to the material strip to be glued, depend on each other. In other words, the setting of one parameter inevitably entails the change of another parameter. Another disadvantage is the fact that the settings are based on the experiences of the operators. This setting to strand formats is therefore on the one hand very fluctuating in quality and on the other hand very time-consuming and thus cost-intensive.

The Erfmdung therefore has the object to propose a better and easier to handle adjustment. Furthermore, the object of the invention is to propose an improved strand machine.

The object is achieved by an adjuster with the features mentioned above in that stop means and / or adjusting means are provided for reproducible adjustment of the working position to different strand formats. With this embodiment according to the invention, it is possible to find the optimum position of the glue nozzle with respect to the wrapping paper, regardless of the operator's know-how. By the stop means and / or adjusting means the adjustment result can be achieved as often as desired with the same accuracy. In other words, regardless of whether the mechanical and / or electronic means are involved, the stop means and / or adjusting means ensure that the respective optimized position of the or each glue nozzle is related to the respective format, ie in particular the diameter of the strand or the like, is repeatably adjustable regardless of the training and quality of the operator.

An expedient development of the invention is characterized in that the working position of the glue nozzle is determined by three adjustable setting parameters. With this embodiment of the invention, a precise and repeatable positioning of the height of the glue nozzles to the strand in the X direction, the depth of the glue nozzles in the Y direction and the angle of the glue nozzles to the transport direction T of the strands can be realized.

Advantageously, the device for receiving and holding the or each glue nozzle comprises a holding frame, a relative to the holding frame movable adjustment frame and the adjustment frame associated tilting element, which is pivotally mounted on the adjustment frame. This inventive design of the device, a functional separation of the individual adjustment parameters is supported, so that the adjustment parameters are independent of each other adjustable. This simplifies the adjustment effort and the accuracy of the positioning is increased.

A preferred embodiment of the invention is characterized in that the device for receiving and holding the or each glue nozzle has a mechanical stop element as a stop means for determining the vertical position of the device with respect to the strand-guiding plane of the stranding machine. The stop element as part of the stop means is a surprisingly simple and precise way to adjust the glue nozzle in height, ie the vertical distance of the glue nozzle to the strand-guiding plane. In particular, this embodiment of the invention makes it easy to adapt the working position of the glue nozzle to different strand formats.

An advantageous development of the invention is characterized in that the setting frame and the holding frame are connected to each other via linear guides and the unit of setting frame and holding frame is associated with an adjusting element for adjusting the axial adjustment of the adjusting frame relative to the holding frame along the linear guides. This ensures that the working position in the depth, that is substantially transversely to the strand conveying direction of the material strand, is precisely and easily adjustable.

The object is also achieved by an aforementioned stranding machine, which is characterized in that the adjusting device is designed according to one of claims 1 to 15. The resulting benefits have already been described in the context of the adjuster. To avoid repetition, refer to the corresponding passages.

Fig. 1

eine perspektivische Darstellung der erfindungsgemäßen Einstelleinrichtung mit zwei Leimdüsen,

Fig. 2

eine Explosionsdarstellung der Einstelleinrichtung gemäß Figur 1 in starker Vergrößerung,

Fig.

3 eine vergrößerte Darstellung der Einstelleinrichtung mit einem Formatbett einer Strangmaschine,

Fig. 4

eine Draufsicht auf die Einstelleinrichtung gemäß Figur 4,

Fig. 5

eine Schnittansicht durch die Einstelleinrichtung gemäß Figur 3 mit Leimdüsen in Warteposition, und

Fig. 6

eine Schnittdarstellung durch die Einstelleinrichtung gemäß Figur 3 mit Leimdüsen in Arbeitsposition.

Further expedient and / or advantageous features and embodiments emerge from the subclaims and the description. A particularly preferred embodiment will be explained in more detail with reference to the accompanying drawings. In the drawing shows:

Fig. 1

a perspective view of the adjustment device according to the invention with two glue nozzles,

Fig. 2

an exploded view of the adjustment according to FIG. 1 in high magnification,

FIG.

3 is an enlarged view of the adjustment device with a format bed of a stranding machine,

Fig. 4

a plan view of the adjustment according to FIG. 4 .

Fig. 5

a sectional view through the adjustment according to FIG. 3 with glue nozzles in waiting position, and

Fig. 6

a sectional view through the adjustment according to FIG. 3 with glue nozzles in working position.

The adjusting device shown in the figures with two glue nozzles serves to glue cigarette paper in a two-column machine of the tobacco-processing industry. Of course, the invention also relates to adjusting devices, with which in general strips of material can be glued in parallel in stranding machines with one strand and two or more strands.

The adjusting device 10 shown in the figures with two glue nozzles 11, 12 can be integrated into a conventional stranding machine not explicitly shown. However, the adjusting device 10 may also have only a single glue nozzle or more than two glue nozzles. The adjusting device 10 has a device 13 for receiving and holding the glue nozzles 11, 12. The two glue nozzles 11, 12 are arranged or fastened to the device 13. The device 13 for receiving and holding the glue nozzles 11, 12 is designed to be movable, such that the glue nozzles 11, 12 from a working position in which the glue nozzles 11, 12 are positioned for gluing (see, for example FIG. 6 ) to a waiting position in which the glue nozzles 11, 12 are positioned for cleaning, maintenance or simply waiting (see, eg FIG. 5 ), and vice versa are movable. The actual movement of the glue nozzles 11, 12 from the waiting position to the working position and vice versa is a tilting movement, which will be described below.

To set the working position of the glue nozzles 11, 12 to different strand formats, ie the actual optimized glueing position of the glue nozzles 11, 12, the setting device 10 has stop means and / or adjusting means which are designed and arranged for reproducible positioning and adjustment / adjustment. In other words, stop means and / or adjusting means are provided by means of which the respective optimized working position for the respective strand format is reproducibly adjustable. For this purpose, the working position of the glue nozzles 11, 12 is determined by at least two, but preferably three adjustable setting parameters. The Of course, the number of setting parameters can vary. In the embodiment of the invention FIGS. 1 and 2 the adjustment parameters are independently adjustable. This means that each setting parameter can be set individually without influencing the other setting parameters. This applies in particular to the setting of the glue nozzles 11, 12 with respect to the height, that is to say a setting in the X direction (see, for example, FIG Figures 5 and 6 ), and the depth, ie a setting in the Y direction (see eg Figures 5 and 6 ), too.

The device 13 for receiving and holding the glue nozzles 11, 12 comprises a holding frame 14, a setting frame 15 and a tilting element 16. The holding frame 14 is preferably arranged and fixed fixedly to a machine frame 40, frame or the like. However, the support frame 14 is releasably secured to the machine frame 40, frame or the like, preferably screws 17 are provided, which are guided in a slot 18 of the support frame 14. The adjustment frame 15 is detachably and movably arranged relative to the support frame 14 at this. Preferably, the adjusting frame 15 is formed smaller in its outer dimensions relative to the holding frame, so that the setting frame 15 is inserted into the holding frame 14. The tilting element 16, which can also be referred to as a rocker, is mounted pivotably about an axis 19 on or in the adjusting frame 15.

The glue nozzles 11, 12 are arranged on a nozzle block 20. The glue nozzles 11, 12 are fastened to the nozzle block 20 in an adjustable manner both relative to one another and with respect to the nozzle block 20. However, this does not exclude that the glue nozzles 11, 12 are detachably fastened to the nozzle block 20, for example for changing the glue nozzles 11, 12. One of the glue nozzles 11, 12, preferably the top glue nozzle 11, protrudes further from the bottom glue nozzle 12 the nozzle block 20 out. The distance between the glue nozzle tips is defined and depends essentially on the distance of the material strips to be glued. Regardless of how the individual adjustment parameters are changed, this distance, which is preferably about 38mm, but may also have any other distance remains unchanged. The arrangement of the glue nozzles 11, 12 to each other can vary. Preferably, the center axes M ₁ and M _{2 of} the glue nozzles 11, 12 are superimposed in plan view. But also an offset arrangement or deviating from the parallel alignment of the central axes M ₁ and M ₂ arrangement is possible.

The nozzle block 20 itself is associated with the tilting element 16 and secured thereto. The tilting element 16 has a recess 21. This recess 21, which can also be referred to as a wide groove, is set up and configured for receiving and fixing the nozzle block 20 in different angular positions. For this purpose, the side walls 22, 23 of the recess 21 are not continuously parallel, but extend outwardly diverging at least in sections. In other words, the nozzle block 20 within the recess 21 has a range of motion, so that the nozzle block 20 can assume different positions within the recess 21. This range of motion can also be achieved in other constructive ways. For fixing the nozzle block 20 within the recess 21 of this is associated with a cover 24, which closes the receiving space 21 from above. At least one centering and / or fixing opening 25 with a corresponding centering and / or fixing element 26 is provided in the cover 24. The centering and / or fixing element 26 can be brought into operative connection with the nozzle block 20. For this purpose, the nozzle block 20 has at least one corresponding opening 27 or the like. In the preferred embodiment, a plurality of centering and / or fixing elements 26 and correspondingly a plurality of openings 27 are provided in the nozzle block 20. Each centering and / or fixing element 26 defines a different angular position. In other words, the center position defines an orientation of the glue nozzles 11, 12 at a right angle to a strip of material to be glued. Notwithstanding the vertical orientation, the glue nozzles 11, 12 can also be aligned and fixed at an angle α that is smaller or greater than 90 ° with respect to the strip of material to be glued, by rotating the nozzle block 20 within the recess 21 and fixing it in this twisted position is. With this design, an adjustment means is provided which determines a first of the aforementioned adjustment parameters. The nozzle block 20 or the glue nozzles 11, 12 are connected in a known manner to a conduit system 28 for supplying the glue and / or other flowable media.

The device 13 for receiving and holding the glue nozzles 11, 12 has a stop element 29 as a stop means. The mechanical stop element 29 serves to fix the vertical position of the device 13 with respect to the strand-guiding plane E of the stranding machine. In other words, the stop member 29 is a stop means for defining or fixing the height (X direction in the Figures 5 and 6 ) of the glue nozzle position. The stop takes place on the format console42 of the stranding machine (see eg FIG. 3 ). The replaceable stop member 29 is in accordance with the described embodiment FIG. 1 a simple plate or the like, but may also be embodied in other ways. The stop element 29 has two bores 30, which correspond with pins 31 or the like, which are arranged on the holding frame 14. The pins 31 serve for centering and fixing the stop element 29. The stop element 29 has a geometry assigned to a particular strand format or dimension. In the case of a format change in the stranding machine, the releasably arranged on the support frame 14 stop element 29 can be easily replaced with another stop element 29, which is tuned in the geometry / dimension or with the formation and location of the holes 30 to the changed strand format. There is also the possibility that a stop element 29 has a plurality of receptacles for centering / fixing on the pins 31, wherein each receptacle is associated with a strand format. Such a stop element 29 could, for example, a perforated plate or a block provided with pairs of holes (see, for example FIG. 3 ) be. It is crucial that the replacement of the stop element 29 or by repositioning the same results in a different height for the glue nozzles 11, 12, so that the stop element 29 determines as a stop means a second of the aforementioned setting parameters.

As already mentioned above, the holding frame 14 and the adjusting frame 15 are connected together and form a detachable unit. In essence, the connection between the holding frame 14 and the adjusting frame 15 via at least one, but preferably two linear guides 32 is made. The linear guides 32 may be, for example, sliding sleeves or the like, which are mounted in the holding frame 14. About screws 33 or the like, the adjustment frame 15 is connected to the sliding sleeves. The linear guides 32, in the described embodiment the sliding sleeves, allow a relative movement between adjustment frame 15 and support frame 14 in the axial direction. In other words, the linear guides 32 allow movement of the glue nozzles 11, 12, which are connected via the tilting member 16 with the adjustment frame 15, in the direction of the material strand to be glued or away from it, since the adjustment frame 15 is movable relative to the fixed support frame 14, so that a setting in depth (Y direction according to the Figures 5 and 6 ) he follows. For adjusting or adjusting the position of the glue nozzles 11, 12 in the depth of the unit of holding frame 14 and adjusting frame 15 is additionally associated with an actuating element 34. The actuator 34 may be, for example, a screw or the like, which is supported on the support frame 14 and the adjustment frame 15 depending on the direction of rotation of the support frame 14 pushes or pulls on this zoom. The adjusting element 34 as adjusting means thus determines a third of the aforementioned setting parameters. The adjusting element 34 may optionally be associated with a scaling 35 or the like in order to define the size or the extent of the adjustment. The scale 35 is arranged against rotation on the adjusting element 34 and secured thereto. For example, it can be determined and determined that two full revolutions of the scale 35 and thus of the adjusting element 34 cause an axial adjustment of the adjusting frame 15 relative to the holding frame 14 of about 0.5 mm. This information is only an example. Also, the formation of the adjusting element 34 as an adjusting screw is only an example. The actuator 34 may also be implemented by motor or other conventional means.

The tilting element 16 is mounted with the axis 19 pivotally or tiltably in the adjustment frame 15. To limit the pivoting or tilting movement, the tilting element 16 has a stop element 36 as a stop means. In the embodiment shown, the stop element 36 is exemplarily a bolt. This bolt sets in abutment with a recess 37 which is formed in the setting frame 15, the end position of the pivoting or tilting movement. The stopper member 36 with the corresponding recess 37 may also be otherwise, e.g. Detent positions for limiting the movement to be realized about the axis 19.

Not all of the abutment means or adjusting means mentioned must be realized for the function of the adjusting device 10. In other words, it can also be up Lifting means or adjusting means for determining the setting parameters are dispensed with. For example, the stop element 29 for adjusting the glue nozzles 11, 12 can be omitted in height. Other combinations of selection of possible setting parameters are also possible. All adjustment parameters are defined by stop elements 29, 36, centering and / or fixing elements 26 and adjusting elements 34 in defined positions, so that all settings are reproducible and without special expertise feasible.

• In Abhängigkeit des zu verarbeitenden/bearbeitenden Formats der Stränge 38, 39 bzw. des Abstands der zu beleimenden Papierbahnen wird zunächst der Abstand der Leimdüsen 11, 12 fixiert. Der Abstand der Papierbahnen beträgt z.B. 38 mm. Entsprechend werden die Düsenspitzen der Leimdüsen 11, 12 in Y-Richtung (siehe z.B. Figuren 5 und 6) fest z.B. auf 3 8mm Abstand eingestellt. Der Abstand der Düsenspitzen bleibt somit während der Bearbeitung unverändert. Ebenfalls in Abhängigkeit des zu verarbeitenden/bearbeitenden Formats der Stränge 38, 39 wird das geeignete und zum Format der Stränge 38, 39 passende Anschlagelement 29 als Formatteil ausgewählt und am Halterahmen 14 befestigt, wodurch die Position der Einstelleinrichtung 10 und insbesondere der Leimdüsen 11, 12 in der Höhe, also in X-Richtung (siehe z.B. Figuren 5 und 6) reproduzierbar festgelegt wird.

The setting of the or each glue nozzle takes place using the example of an adjusting device 10 with two glue nozzles 11, 12:

• Depending on the format of the strands 38, 39 to be processed / processed or the distance between the paper webs to be glued, the distance of the glue nozzles 11, 12 is first fixed. The distance of the paper webs is for example 38 mm. Accordingly, the nozzle tips of the glue nozzles 11, 12 in the Y direction (see, eg Figures 5 and 6 ) fixed eg to 3 8mm distance. The distance between the nozzle tips thus remains unchanged during processing. Also, depending on the format of the strands 38, 39 to be processed / processed, the suitable stopper element 29 suitable for the size of the strands 38, 39 is selected as the format part and fastened to the holding frame 14, whereby the position of the adjusting device 10 and in particular of the glue nozzles 11, 12 in height, ie in the X direction (see eg Figures 5 and 6 ) is set reproducibly.

The glue nozzles 11, 12 fastened in or on the nozzle block 20 are then tilted into the working position by means of the tilting element 16. For this purpose, the stop element 36 is provided that rests in the end position in the recess 37 and defines the working position. The fine adjustment of the distance between the two nozzle tips to the paper via the actuator 34. By actuating the actuator 34, the two glue nozzles 11, 12 synchronously in the depth, ie in the Y direction, can be adjusted. With this setting, the nozzle tips can be brought into contact with the paper or out of contact with the paper or pressed into the paper. The scaling facilitates precise adjustment and ensures that desired operating states / positioning can be preselected and recalled. For example, a full revolution of the adjusting element 34 could be an adjustment of the Distance by 0.1mm mean. With such a scaled classification, it is possible to allow an inexperienced operator and / or remote information accurate positioning.

Optionally, the position of the glue nozzles 11, 12 or the alignment of the center axes M ₁ and M ₂ with respect to the strands 38, 39 can be adjusted. In other words, the angle α of the center axes M ₁ and M ₂ to the transport direction T of the strands 38, 39 are changed, in which the nozzle block 20 is dissolved and within the recess 21 about an axis which is perpendicular to the transport plane of the strands 38, 39 , is pivoted. Preferably, between three angular positions is selected. However, the recess 21 and the corresponding centering and / or fixing openings 25 in the cover 24 and centering and / or fixing elements 26 may also be designed for positioning in more than three or less than three positions.

The reproducible adjustment parameters, determined by the predetermined adjustment means and the formed stop means, make an optimized adjustment of the glue nozzles 11, 12 possible even with a format change, namely fast and reproducible.

Claims (16)

Adjusting device (10) with at least one glue nozzle (11, 12) for extrusion machines of the tobacco processing industry, comprising a device (13) for receiving and holding the or each glue nozzle (11, 12) and at least one glue nozzle arranged on the device (13) (11, 12), wherein the device (13) for moving the or each glue nozzle (11, 12) from a working position to a waiting position and vice versa is formed, characterized in that stop means and / or adjusting means for reproducible adjustment of the working position to different Strand formats are provided. Adjusting device according to claim 1, characterized in that the working position of the glue nozzle (11, 12) is determined by at least two adjustable setting parameters. Adjusting device according to claim 2, characterized in that the two setting parameters are the height of the glue nozzles (11, 12) to the strand (38, 39) and the depth of the glue nozzles (11, 12) to the strand (38, 39). Adjusting device according to one of claims 1 to 3, characterized in that the working position of the glue nozzle (11, 12) is determined by three adjustable setting parameters. Adjusting device according to claim 4, characterized in that the three setting parameters, the height of the glue nozzles (11, 12) to the strand (38, 39), the depth of the glue nozzles (11, 12) to the strand (38, 39) and the angle of the glue nozzles (11, 12) to the transport direction T of the strands (38, 39). Adjusting device according to one of claims 2 to 5, characterized in that the adjustment parameters are independently adjustable. Adjusting device according to one of claims 1 to 6, characterized in that the device (13) for receiving and holding the or each glue nozzle (11, 12) has a holding frame (14), a relative to the holding frame (14) movable adjusting frame (15) and a tilt member (16) associated with the adjustment frame (15) and pivotally mounted on the adjustment frame (15). Adjusting device according to claim 7, characterized in that the or each glue nozzle (11, 12) on a nozzle block (20) fixedly but detachably disposed, wherein the nozzle block (20) is associated with the tilting element (16). Adjusting device according to claim 8, characterized in that the tilting element (16) has a recess (21) for the nozzle block (20), wherein the recess (21) for receiving and fixing the nozzle block (20) is formed and arranged in different angular positions. Adjusting device according to one of claims 1 to 9, characterized in that the device (13) for receiving and holding the or each glue nozzle (11, 12) a mechanical stop element (29) as a stop means for fixing the vertical position of the device (13) in Referring to the strand-guiding level E of the stranding machine. Adjusting device according to claim 10, characterized in that the stop element (29) is exchangeable in dependence of the strand format, wherein each stop element (29) is associated with a defined strand format. Adjusting device according to claim 10 or 11, characterized in that the stop element (29) is releasably attached to the holding frame (14). Adjusting device according to one of claims 7 to 12, characterized in that the tilting element (16) has a stop element (36) as Has stop means which defines the end position of the tilting movement in abutment with the adjusting frame (15). Adjusting device according to one of claims 7 to 13, characterized in that the adjusting frame (15) and the holding frame (14) via linear guides (32) are interconnected and the unit of adjusting frame (15) and holding frame (14) has an actuating element (34). is assigned as adjusting means for the axial adjustment of the adjusting frame (15) relative to the holding frame (14) along the linear guides (32). Adjusting device according to one of claims 1 to 14, characterized in that at least two glue nozzles (11, 12) on the device (13) are arranged, wherein the two glue nozzles (11, 12) a defined and fixed, the distance between two strands or Have between two to be glued strips of material reflecting the distance to each other. Extrusion machine for forming strand-like products of the tobacco-processing industry, having an adjusting device (10) with at least one glue nozzle (11, 12), characterized in that the adjusting device (10) according to one of claims 1 to 15 is formed.

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