JP2010193886A - Cutting strand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a strand-cutting device for a tobacco processing industry by which strands can be certainly and quickly cut so that the strands can be neatly cut during cutting, especially without changing their direction out of their paths and a suitable method for cutting strands in tobacco processing industry, furthermore bring the method to be applicable even to machines for processing a plurality of strands, particularly two strands. <P>SOLUTION: The strand-cutting device for tobacco processing industry has a circular cutter 10 rotatable around a rotation axis 11. A circular cutter-guiding device is arranged to linearly moves the circular cutter 10 during operation of the circular cutter. In a method for cutting at least one of the strands 14, 15 in tobacco processing industry in which the rotating circular cutter 10 is guided to pass through strands 14, 15 moving in strand guide paths 19, 19', the circular cutter 10 is guided to linearly pass through the strands 14, 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a strand cutting device in the tobacco processing industry having a circular cutter rotatable about a rotation axis. The invention further relates to a method for cutting at least one strand of the tobacco processing industry, wherein a rotating circular cutter is guided through a strand moving in a strand guide track.

  A corresponding strand cutting device is known from US Pat. The rotational axis of the circular cutter is located transverse to the strand through which the circular cutter can pass, the rotational axis being arranged essentially horizontally during operation of the strand cutting device, and the strand cutting device is circular with the strand. To engage the cutter, it is swung horizontally through a swing arm.

European Patent Application Publication No. 1 800 511

  The problem of the present invention is that the strands of the tobacco processing industry can be surely and quickly cut, and that the strands can be cleanly cut when they are cut, in particular the direction of the strands is not changed. It is to develop a type of strand cutting device and a corresponding method for cutting strands in the tobacco processing industry. Furthermore, the strand cutting device according to the invention should also be applicable in machines that process multiple strands, in particular two strands.

  This problem is solved by a strand cutting device in the tobacco processing industry having a circular cutter rotatable about a rotation axis, characterized in that a circular cutter guide device is provided for linearly moving the circular cutter during operation. Is done. The circular cutter guide device is in particular formed as a stroke device and / or a linear motion device.

  Due to the linear motion of the circular cutter in operation, it is possible to cut the strands with a very limited circular cutter. In particular, the rotating shaft is arranged essentially horizontally during operation of the strand cutting device. In particular, the rotation axis is formed perpendicular to the longitudinal axis of the strand guide track. A strand guide track is a track in which a strand moves within the scope of the present invention. In this case, it is not always necessary to provide a forced guide. The strand guide track passes through the free section, in particular in the air.

  In particular, the circular cutter guide device causes movement of the rotary cutter parallel to the rotational axis of the circular cutter. As an alternative or in addition, it is possible to move the circular cutter transversely to the movable strand to be cut essentially perpendicular to the strand guide track or in the tobacco processing industry. The circular cutter guide device can be equipped with a hydraulic cylinder that causes linear movement or a motor that allows movement of the circular cutter via a corresponding gear unit, for example. In this case, the circular cutter guide device provides a corresponding stroke for a circular cutter large enough to cut through one strand or multiple strands.

  In particular, the rotational axis of the circular cutter is arranged transversely, in particular perpendicularly to the strand to be cut during operation of the strand guide track or circular cutter. In this case, the circular cutter is guided through the strands in a straight line, in particular vertically.

  In particular, from below, a strand guide device is provided which is movable towards the strand or the strand guide track, in particular pivotable or linearly movable. The strand guide device is in particular an extension or complement of a kind of sizing device, which comprises a corresponding plurality of openings through which the strand can move. These openings are in particular alignable with the openings of the sizing device. The strand guide device is used in particular as an end support for circular cutters. The strand guide device comprises in particular two guide openings which can accommodate movable strands arranged parallel to each other.

  Circular cutters, in particular, are subjected to a linear stroke greater than the interval between two parallel strands or two parallel strand guide tracks in the tobacco processing industry by means of a circular cutter guide device. This spacing means within the scope of the invention from the outer surface of the strand to the outer surface of the strand, so that the stroke exceeds two strands.

  A circular cutter has a waved or toothed surface, especially at its cutting edge.

  In particular, the rotational axis of the circular cutter is an angle of 85 ° to 90 ° with respect to the movable strand to be cut in the tobacco processing industry and / or an angle of 0 ° to 5 ° with respect to the linear movement of the circular cutter. It is. Optionally, the angle may be between 85 ° and 90 ° with respect to the corresponding strand guide track. It is preferable that the angle of the rotation axis of the circular cutter with respect to the strand guide track or the strand is in the vicinity of 90 °, or just 90 °. In that case, this makes a relatively long oblique cut of the strand. In order to shorten this cut, especially when the strand speed is high, the circular cutter can be adjusted by a few degrees, so that the cut when the strand speed is high is improved.

  In particular, a control device is provided for adjusting the corresponding angle of the circular cutter relative to the strand guide track depending on the strand speed. The circular cutter is particularly rotated at a rotational speed of 1000 to 3000 rpm, and 2000 rpm is particularly preferable. The strand speed is usually in the range of 50 to 100 m / min, and the cut portion has a length of 12 to 20 mm.

  Further, the problem is that, in order to start the strand manufacturing machine, the strand cutting device is disposed at a position different from the position during the strand manufacturing operation of the strand manufacturing machine, and the strand guide track is located between the two positions. It is solved by a strand making machine of the tobacco processing industry having a strand cutting device according to the invention for cutting at least one strand of the tobacco processing industry, characterized in that it is arranged.

  In the case of a twin-strand or multi-strand maker, two strands or multiple strands are disposed between the two positions. This allows very limited and controlled starting and stopping of the strand making machine.

  To start the strand maker, the strand maker is brought from a low strand production rate to a high strand production rate, in which case the strands are first discharged and are therefore not used for further processing. Once a satisfactory strand or a given strand has been obtained, then a single strand or, in the case of a twin-strand maker or a multi-strand maker, a plurality of strands are cut by the device according to the invention. The upstream part of the strand is then cut relatively upstream, reaching the normal next processing of the strand making machine, and correspondingly cut to the desired length, and for example a filter cigarette is obtained. The strand is a filter strand or a cigarette strand.

  The problem further is that the circular cutter is guided to pass through the strand moving linearly in the strand guide track, wherein the circular cutter is guided linearly through the strand. Solved by a method for cutting at least one strand of the industry. In particular, the linear movement of the circular cutter is perpendicular to the strand longitudinal axis. With linear movement, one strand can be cut with a very short stroke, or a plurality of strands can be cut with a very short stroke, so that a very quick cutting is possible. In this case, the device has a very compact configuration. An angle not equal to 90 ° can be provided between the axis of rotation and the longitudinal axis of the strand. The axis of rotation is particularly pivotable in view of its angle with respect to the longitudinal axis of the strand.

  It is particularly preferred that the linear movement of the circular cutter is parallel to the rotational axis of the circular cutter.

  In particular, the strands are guided to a strand guide device that is used as a support. In particular, the strand guide device is moved, in particular swiveled or linearly moved, towards the strands, in particular upwards, in order to cut the strands.

  In order to make a controlled stop of an operating strand production machine, characterized in that a method for cutting at least one strand of the tobacco processing industry according to the invention is carried out when a stop signal occurs This method is particularly preferable. In this case, the stop signal may be, for example, a signal that is automatically generated when a broken portion of the strand is detected or a signal that is issued by an operator. For the first time, the method according to the present invention cuts strand material in a limited way, and further carries out a subsequent processing step of the cut strand material, which is limitedly located downstream of the cut. It is possible to implement a controlled stop.

  The invention will now be described on the basis of embodiments associated with the drawings, without limiting the general inventive idea. In this case, reference is made to the drawings for all the details of the invention not described in detail in the text.

A schematic plan view of a part of a strand manufacturing machine is shown. 1 shows a schematic three-dimensional view of a strand cutting device according to the present invention. FIG. 3 shows a schematic three-dimensional view corresponding to FIG. 2 in which the strand cutting device is arranged at another position. A schematic plan view of a part of a strand manufacturing machine is shown.

  In each drawing, elements of the same or the same type or corresponding parts are provided with the same reference numerals, and will not be described again.

  FIG. 1 shows a plan view of a part of the strand manufacturing machine 30. This is a twin strand making machine, for example a twin filter strand making machine. Correspondingly, two filter strands 14 and 15 are shown moving in the transport direction 16, 16 '. This is the strands 14 and 15 coated with a coating material. The coating and shaping of the filter strands 14 and 15 takes place in the sizing part, of which the lower sizing member 18 is shown here. Corresponding strand guide tracks 19 and 19 'for guiding the strands 14 and 15 are also shown. This is a correspondingly formed track in the region of the lower sizing member 18. However, the strand guide tracks 19 and 19 ′ extend not only in the region of the lower sizing member 18 but also in the strand guide device 17, and the further left side of FIG. 1 extends in the air. Accordingly, the strand guide tracks 19, 19 'according to the invention are in particular tracks on which the corresponding strands are arranged or moved. This is possible, at least in part, without using a fixed restriction.

  In order to cut the strand, FIG. 1 shows a circular cutter 10 that rotates about a rotating shaft 11. This circular cutter may be provided with waves or teeth at its cutting edge. In FIG. 1, for the sake of illustration, there is a place for the operator below the starting position 12 and a part of the strand making machine above the operating position 13. For example, a motor, a gear unit, and the like are disposed in the strand manufacturing machine in the upper region of FIG. In particular, there is also a drive for a rotary cutter for rotating and stroking the strands 14 and 15 but not shown in FIG.

  The circular cutter 10 is in position 12 in FIG. 1, i.e. the starting position. The axis of rotation 11 is perpendicular to the longitudinal axes 34, 35 of the strands 14 and 15. Therefore, the angle α is 90 °. As soon as the strands 14 and 15 suitable for the next processing are constructed, the circular cutter 10 moves relatively quickly through the strands 14 and 15 from the position 12 in the direction of the arrow, ie in the circular cutter movement direction 20. To do. This creates a corresponding cut in the strands 14 and 15. The portions of the strands 14 and 15 disposed upstream of the cutting portion are used for the next processing, and the downstream portions are excluded from the next processing. In doing so, the circular cutter 10 reaches the operating position 13 and remains there while the strand making machine is in normal production operation.

  As soon as the stop signal is issued, the circular cutter 10 is moved from the operating position 13 through the strands 14 and 15 in the circular cutter movement direction 21 and cuts the strands 14 and 15 accordingly. At this time, the portions of the strands 14 and 15 that are relatively upstream with respect to the cutting portion are excluded from the subsequent processing, whereas the downstream portion of the cutting portion can be subjected to the subsequent processing. This is done unless the possibly provided sensor detects that this part of the strand is no longer suitable for further processing.

  In order to stabilize the strands 14, 15, a strand guide device 17 comprising two openings 25 and 26 for guiding the strands 14, 15 is provided. The openings 25, 26 are well seen in FIGS. The strand guide device 17 is moved or swung from the bottom of the strand toward the strand in order to cut the strand. This is also well seen in FIGS.

  In FIG. 2, a strand cutting device 22 according to the invention comprising a housing 23 and a circular cutter 10 is schematically illustrated in a three-dimensional view. FIG. 2 shows a strand guide device 17 having two openings 25 and 26. The strand guide device 17 is swung toward the strands 14 and 15 in FIG. 2, and is swung away from the strands 14 and 15 in FIG.

  FIG. 2 shows the operating state of the strand manufacturing machine at the start. That is, the circular cutter 10 exists at the position 12 in FIG. Since this position is remote from the machine wall 24, the strands 14 and 15 are disposed between the circular cutter 10 and the machine wall 24. Further, FIGS. 2 and 3 show a stroke device 27 that allows a linear stroke of the strand cutting device 22 and thereby a linear stroke of the circular cutter 10.

  In addition, FIG. 2 illustrates that the strands are separated downward, whereas in FIG. 3, in the normal production operation of the strand making machine, the strands 14 and 15 are in the strand making machine. It is shown that it is guided to the left for the next processing at. During normal operation, that is, during production operation of the strand making machine, the strand guide device 17 is moved or swung away from the strands 14 and 15 downward.

  FIG. 4 illustrates another schematic plan view of another portion of the strand making machine. 4 is compared with FIG. 1 in the longitudinal direction of the strands not shown, as is the strand guide tracks 19 and 19 ′ or the filter strands 14 and 15 (not shown) disposed in the strand guide tracks 19 and 19 ′. A circular cutter 10 tilted with respect to axes 34 and 35 is shown. An angle β that can be 0 ° to 5 ° is described between the rotary shafts 34 and 35 and the circular cutter moving direction 20. Especially at low speeds, it makes sense to increase the angle β or not 0 °. In particular, the control of the angle β is performed depending on the strand speed.

  All of the features that can be read from the drawings alone and the individual features that are disclosed in combination with other features, alone or in combination, are considered important to the present invention. Embodiments according to the invention can be obtained by individual features or a combination of features.

DESCRIPTION OF SYMBOLS 10 Circular cutter 11 Rotating shaft 12 Starting position 13 Operating position 14 Filter strand 15 Filter strand 16, 16 'Transfer direction 17 Strand guide device 18 Lower sizing member 19, 19' Strand guide track 20 Circular cutter moving direction 21 Circular cutter moving direction 22 Strand Cutting Device 23 Housing 24 Machine Wall 25 Opening 26 Opening 27 Stroke Device 30 Strand Making Machine 34 Strand Longitudinal Axis 35 Strand Longitudinal Axis α Angle β Angle

Claims (14)

In a strand cutting device (22) of the tobacco processing industry having a circular cutter (10) rotatable about a rotation axis (11),
A strand cutting device comprising a circular cutter guide device (27) for linearly moving the circular cutter (10) during operation.   A circular cutter guide device (27) causes the movement of the rotary cutter (10) parallel to the rotational axis (11) of the circular cutter (10) and / or relative to the strand guide track (19, 19 '). 2. A strand cutting device according to claim 1, characterized in that it causes the movement of an essentially vertical circular cutter (10).   3. Strand cutting device according to claim 1 or 2, characterized in that the rotary shaft (11) of the circular cutter (10) is arranged transversely, in particular vertically, to the strand guide track.   1. Characterized in that a strand guide device (17) is provided which is movable, in particular pivotable, from below, towards the strand (14, 15) or the strand guide track (19, 19 ′). The strand cutting device according to any one of 3.   5. The strand guide device (17) comprises two guide openings (25, 26) for two movable strands (14, 15) arranged parallel to each other. The strand cutting device as described.   A straight line in which the circular cutter (10) is greater than the distance between two parallel strands (14, 15) or two parallel strand guide tracks (19, 19 ') in the tobacco processing industry by means of the circular cutter guide device (27). The strand cutting device according to any one of claims 1 to 5, wherein the strand cutting device receives a stroke.   The rotational axis (11) of the circular cutter (10) is at an angle of 85 ° to 90 ° with respect to the movable strand to be cut (14, 15) or strand guide track (19, 19 ′) in the tobacco processing industry. 7. Strand cutting device according to any one of the preceding claims, characterized in that it is at an angle of 0 ° to 5 ° with respect to the linear movement of the and / or circular cutter (10). In a tobacco processing industry strand making machine (30) having a strand cutting device (22) according to any one of claims 1 to 7 for cutting at least one strand (14, 15) of the tobacco processing industry. ,
In order to start the strand manufacturing machine, the strand cutting device (22) is disposed at a position (12) different from the position (13) during the strand manufacturing operation of the strand manufacturing machine (30). 12. A strand manufacturing machine, characterized in that at least one strand guide track (19, 19 ′) is arranged between 12, 13). At least one strand (14, 15) in the tobacco processing industry, in which a rotating circular cutter (10) is guided through a strand (14, 15) moving in a strand guide track (19, 19 '). In the method for cutting,
A method characterized in that the circular cutter (10) is guided linearly through the strands (14, 15).   10. Method according to claim 9, characterized in that the linear movement of the circular cutter (10) is perpendicular to the strand longitudinal axis (34, 35).   11. Method according to claim 9 or 10, characterized in that the linear movement of the circular cutter (10) is parallel to the axis of rotation (11) of the circular cutter (10).   12. Method according to any one of claims 9 to 11, characterized in that the strands (14, 15) are guided by a strand guide device (17) used as a support for the circular cutter (10). .   The strand guide device (17) is moved, in particular linearly moved towards the strand (14, 15), in particular upward, in order to cut the strand (14, 15). The method of claim 12. In a method for a controlled shutdown of an operating strand production machine (30),
14. A method according to claim 9, wherein the method according to any one of claims 9 to 13 is carried out when a stop signal occurs.

Images