JPS6113795B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for forming desired air-permeable sections in the coating material of rod-shaped articles in machines for producing rod-shaped articles used in the tobacco processing industry.

In this specification, the "stick-shaped article manufacturing machine" refers to tobacco,
manufacturing or processing articles formed into rods from smokable tobacco substitute materials or filter materials;
It includes all machines used in the tobacco processing industry, such as, for example, cigarette rod making machines, filter rod making machines or filter fitting machines.

The smoking article is provided with a desired breathable section, i.e. perforation holes are machined in the covering material wrapped around the mouth end area, by means of which the smoke is mixed with cold air from the atmosphere. It is becoming increasingly important to The secondary air drawn through the section during smoking can influence the nicotine and condensate content of the smoke. In order to maintain a predetermined content of nicotine and condensate in the smoke of a single smoking article with the desired breathable classification, this classification must be used during smoking. It is necessary to ensure that the proportion of the amount of secondary air drawn in to the smoke remains as constant as possible for the same type of smoking article.

It is known to puncture one end of the mouthpiece by mechanical means, for example during the rolling process in a filter installation machine, by means of a needle or the like. However, these needles wear and this causes a change in the size of the drilled perforation hole, which must be corrected by subsequent adjustment of the piercing member, such as the needle. Also, the perforating member needs to be replaced due to wear.

SUMMARY OF THE INVENTION The object of the invention is to improve a device of the type mentioned at the outset so that perfect perforation holes can be produced by wear-free means.

According to the present invention, the above-mentioned rod-shaped article manufacturing machine is provided with at least one beam generation source that generates a coherent beam, and the beam generation source is provided with a desired area of the coating material. In order to process the number of holes, a pulse generator for generating beam pulses as well as a control device for synchronizing said pulse generator, which is drive-connected to the drive of the bar-shaped article manufacturing machine, are included. It has now been resolved.

The advantages achieved by the present invention are as follows. This means that the size of the holes themselves as well as the spacing between the individual holes and thus the desired air permeability are maintained very precisely. The radiation source is advantageously a laser device. According to one embodiment of the invention, a laser device is arranged upstream of the coating device, in which case the pulse generator of the laser device is synchronized by the control device;
In this case, the pulses are matched to the running speed of the coating material, which is continuously fed into the coating device, in order to machine the desired number of holes per unit length of the coating material.

According to a further embodiment of the invention, the laser device is associated with a transverse conveyor for conveying the rod-shaped articles in a direction transverse to the rod-shaped article longitudinal direction, on which the projecting ends of the articles are transported. intersects the laser beam path of the laser device, in which case the control member synchronizes the pulse generator with the transport timing such that at least one aperture crosses a rod as it passes through the laser device. Processed into

According to a further embodiment of the invention, the laser device is assigned to a strand conveyor conveying the strand surrounded by the coating material, in which case the pulse generator is synchronized to the strand speed by the control device, A desired number of holes are machined in selected peripheral sections of the strand.

In order to ensure that the amount of secondary air mixed with the smoke does not exceed a predetermined value, a monitoring device is provided to control the size of the pores in the section so that a section with the desired ventilation is formed. It is in driving connection with an adjustment member for displacing the laser beam focus of the laser device.

According to a further embodiment of the invention, a monitoring device for a section with intended ventilation comprises an adjustment member for varying the radiant energy of the laser device in order to control the size of the holes in said section. Drive connection.

Of course, it is also possible to vary the permeability of the perforation holes by changing the number of holes.

In particular, it is possible to machine holes arranged in a ring shape on the outer periphery of the filtered cigarette when the filtered cigarette is transported in a transverse direction perpendicular to the axial direction, without requiring high costs for the filtered cigarette. In order to do this, according to the invention, a transverse transport conveyor is provided which is constructed as a rolling drum and which transports the rod-shaped articles transversely at right angles to their axis, the rolling drum being provided with a A corresponding rolling surface is assigned to the rolling drum which is driven in the opposite direction, the speeds of which are equal to each other and the rod-shaped articles guided between the rolling drum and the corresponding rolling surface. The rod-like article is rotated about its own axis in a stationary state and, to the extent that it remains stationary, receives a beam from a radiation source for coherent beam emission during its rotation. The radiation source is associated with a device for generating beam pulses in order to machine a desired number of holes in the coating material over the circumference of the rod-shaped article.

According to the above configuration of the present invention, the following advantages can be obtained. That is, without interrupting the transport of the double-length filter cigarettes to and from the perforation punching station, which is subjected to a rotational movement that starts or ends at a predetermined time. On the outer circumferential surface of the covering material of the double-length filter cigarette, a large number of evenly spaced holes of very constant diameter, with perfect edges, in a manner that does not damage the cigarettes or, in other words, do not deform them. It can be processed with.

According to an advantageous embodiment of the invention, the radiation source is associated with a control device for synchronizing the pulse generator, which is connected in a driving manner to the main drive of the production machine.

According to one advantageous embodiment of the invention, the radiation source is a laser device. In a filter attachment machine, a filter mouthpiece, usually twice the length actually in use, is first inserted into the axial space between the mutually facing end faces of two tobacco rods, so that 1. Two double-length filter cigarettes are formed. In this case, this double length filter cigarette is
It is advantageous to machine the perforation holes before cutting the book into individual filter cigarettes. To this end, according to one embodiment of the invention, the radiation source has two radiation heads arranged in parallel in the longitudinal direction of the article for machining holes in the coating material of the multiple article. . For conventional filter installation machines, it is particularly advantageous if the radiation source is arranged inside the rolling drum.

In order to ensure that the start and end of the rolling process correspond exactly to the position of the radiation source, according to a further embodiment of the invention, corresponding rolling surfaces made as rolling belts are arranged one after the other at intervals. a continuous protruding rolling surface, the length of which is equal to the spacing between two recesses on the rolling drum for positioning the article before and after rolling; has been done.

In order to avoid deviations over time in the article rolling process relative to the control of the laser device, according to one embodiment of the invention, the rolling belt is constructed as a toothed belt. .

In order to prevent laser damage to the rolling drum in the event of an interruption in the article conveying stream, in other words in the event of one article missing, according to one embodiment of the invention the rolling belt is provided with a spacing. It consists of a number of toothed belts arranged parallel to each other, with the radiating head directed into the space between these toothed belts.

According to one particularly advantageous embodiment, which can be constructed in a particularly compact manner, for starting or ending the rolling process of successive articles at a predetermined time in each case, there is a roll of an endless conveyor as the corresponding rolling surface, and The roll has alternating protrusions and depressions on its outer periphery.

Yet another advantageous implementation of the invention, in which the rod-shaped article is transported by the machine for producing it in a transverse direction perpendicular to the axial direction of the rod-shaped article, and the transport movement of the article during processing of the perforation hole is not interrupted. According to an example, the articles are conveyed by a transverse conveyor having a rolling surface, which conveys the articles transversely at right angles to its axis, and to which a stationary corresponding rolling surface is assigned. , in the area of the corresponding rolling surface, a device is provided for deflecting the laser beam applied to the article during transport and rotation of the article.

The invention will now be explained with reference to the illustrated embodiment.

A feed-in drum 1 feeds the manufactured cigarettes in the cigarette making machine to two stacking drums 2, these two drums break up the cigarettes fed in a stack and are separated in the axial direction, leaving one pile between them.
Rows of two cigarettes each forming two intermediate spaces are fed one after the other to the assembly drum 3. The filter rods reach the cutting drum 6 from the magazine 4, are cut into filter plugs with a length twice the actual length by two disk cutters 7, are deposited on the stacking drum 8, and are further cut in one row by the displacement drum 9. The position is corrected to the filter plugs arranged sequentially in
The cigarettes are lowered into the respective intermediate spaces of the upper row of cigarettes. The cigarette-filter-cigarette groups are axially pressed together, and the end faces of the cigarette-filter-cigarette are closely abutted axially. These groups are then received by the transfer drum 12. Covered paper tape 1
3 is pulled out from the covered paper bobbin 14 by a pull-out roller 16. The coated paper tape 13 is wound around a sharp-edged preliminary cutter 17, coated with glue by a gluing device 18, and then cut by a cutter drum 21 on a cover roller 19. The cut pieces of coated paper are attached to the cigarette filter group on the transfer drum 12;
It is then wrapped around the cigarette filter group by means of a rolling plate 23 on a rolling drum 22. The double-length filter cigarette group produced in this way is fed via the drying drum 24 to a cutting drum 26, where the double-length filter is cut in the middle to separate individual single pieces. At the same time, defective filter cigarettes are discarded. One row of filter cigarettes is turned around by means of a turning device 29 with which the transfer drum 27 and the collection drum 28 cooperate, and at the same time the transfer drum 27
and is transferred into the other non-rotated filter cigarette row passing through the collection drum 28. Via the inspection drum 31, the filter cigarettes reach a discharge drum 32, on which a head inspection of the filter cigarettes is carried out before being discharged. A delivery drum 34 cooperating with a brake drum 33 moves the filter cigarettes onto a delivery belt 36.
be moved up. In the filter mounting machine, either a laser head 37 is assigned to the supply area of the coated paper tape 13 or a laser head 38 is attached to a transverse conveyor (in this case a collecting drum) which conveys the filter cigarettes at right angles to their axis. 28)
belongs to the range of

2 to 4 are detailed views of the structure of the laser head 37.

The laser head 37 consists of a resonator 39 in which the laser beam is generated and a radiation head 41 having a number of mirrors and lenses for splitting, deflecting and focusing the generated laser beam. radiation head 41
3 has a translucent mirror 42 which transmits a part of the laser beam generated by the resonator 39, in this example half, through a condenser lens 43. and reflects the other half of the laser beam towards deflection mirror 44, which deflects it towards condenser lens 46. Condensing lenses 43 and 46 focus the divided laser beams onto the coated paper tape 13, which is continuously drawn out. In order to ensure that the desired number of holes are drilled at intervals in the continuously fed coated paper tape, the energy supply of the laser head 37, shown as conductor 47, is provided with a mechanical connection for clarity. A pulse generator 48, illustrated as a switch, is provided. In order to coordinate the pulse train with the running speed of the coated paper tape 13, a control device 49 is provided, which comprises a timing disk 51 driven from the drive of the filter installation machine, an approach transmitter 52 and a regulating element 53. It consists of In this manner, two rows of holes 55 are drilled in the covered paper tape 13, as shown in FIG. Of course, three or more rows of holes can be made in the tape 13 by further dividing the laser beam.

Furthermore, the filter cigarette is tested for air permeability in the perforation area on the test drum 31, and a test device 54 is provided for this purpose.
The test device 54 is of known type, with a pneumatic measuring chamber 56 shown schematically and a measuring device 5.
7. Measuring device 57 for the test air pressure, consisting of an integrating device 58 and a setpoint value generator 59:
It is constructed as a pneumatic-electric measuring value transducer in the form of a test diaphragm which is charged with test air, the position of which is detected capacitively. This measuring device has a US Patent No.
It is also possible to manufacture it as described in specification 3412856. Measuring device 57 sends one measuring signal for each filter cigarette Z to an integrator, which integrator emits an output signal corresponding to the permeability of the perforation section of a certain number of filter cigarettes. The comparison device 61 is connected on the one hand to the integrating device 58 and on the other hand to the setpoint value generator 59, in which case the comparison device 61 is also connected to a control unit 62. The control unit 62 is connected to a regulating element in the form of a variable preresistance 63 arranged on the line 47, which is connected to the comparator 6 from the control unit 62.
1 is controlled in response to an input signal from 1. In this way the laser energy supply can be varied in relation to the test signal.

FIG. 3 shows a variant embodiment for varying the size of the perforation pores, according to which the control unit 62 acts on the adjusting element 64, shown in dotted lines, thereby The distance of both lenses 43 and 46 from the covering paper tape 13 is changed, and thus the focus of the laser beam is changed.

The pulse generator 48 can also be made to operate intermittently in a different manner than the energy supply device. For example, it is also possible to construct it as a perforated screen or the like which directly blocks or passes the laser beam. However, it is also possible for the covered paper tape to be guided by a perforated drum or the like, in which case the drum-like perforated pattern is formed on the covered paper tape 13.
Specify the size, number and arrangement of the holes.

Parts of the further embodiment of the arrangement of the laser head 38 shown in FIG. 5 which correspond to those of the previously described embodiments are numbered 100 plus and will not be specifically explained again. do not have. The laser is emitted in this embodiment from a radiation head 166 shown in FIG.
66 belongs to the collecting drum 28, in which case the finished filter cigarettes Z, which are transported transversely at right angles to the axial direction on the collecting drum 28, are pierced directly in the area of their mouthpieces. For this purpose, the radiation head 166 has a translucent mirror 167 which directs a part of the beam via deflecting mirrors 168 to 171 to a condensing lens 172 and another part of the laser beam to deflecting mirrors 173 and 174. The light is guided to the condenser lens 176 through the condenser lens 176. Condensing lenses 172 and 176 focus the laser beam directly onto one end of the mouthpiece of the filter cigarette Z, so that two holes are drilled in the paper at opposite ends. A larger number of holes can be drilled in the mouthpiece end by further splitting the laser beam by using suitably placed splitting and deflecting mirrors as well as additional condensing lenses. According to a further embodiment (not shown) for perforating perforation holes in filter cigarettes which are conveyed transversely at right angles to the axial direction, the filter cigarettes are rolled during their conveyance; At this time, the laser beams are intersected or the filter cigarette is rotated about its own axis in a stationary state, and the properly controlled laser beams are used to drill successive holes in an annular manner at one end of the mouthpiece. It will be done.

Next, another type of use of the laser beam will be briefly explained with reference to FIG.

FIG. 7 shows a GARANT type cigarette rod making machine manufactured by Hauniy of Bergedorff, Hamburg.

The shredded tobacco spread onto the tobacco conveying belt 77 is formed into a single tobacco stream within the tobacco passage 78. A forming ring 79 that has a U-shaped groove with a hole at the bottom on its outer periphery and is loaded with suction air in the conveying section.
receives the tobacco stream from the tobacco conveying belt 77. Leveling device 81 removes excess from the tobacco stream on forming wheel 79 to form tobacco strands 82. A strand conveyor 83 under suction picks up the tobacco strands 82 from the grooves of the forming wheel 79 and deposits them onto a synchronously guided cigarette paper tape 84. The cigarette paper tape is drawn from the bobbin 86, guided through a printing device 87 and fed to a forming belt 88 which is being driven. The forming belt 88 molds the tobacco strand 82 and the cigarette paper tape 84 into a mold 89.
In this mold 89 the paper tape 84 is wrapped around the tobacco strand, leaving only one edge. The gluing device 91 applies glue to this edge, adheres this edge, and attaches the seam forming plate 92.
Let this glued seam dry. The cigarette rod 93 formed in this way is attached to the cutter device 9.
4 into individual cigarettes, which are extruded from an accelerator 96 into a delivery drum 97. The cigarette rod making machine further includes a laser head 98 arranged in the cigarette wrapping tape supply area before the mold entrance, or a laser head 99 arranged in the cigarette rod feed area before the cutter device. This will be explained below with reference to FIGS. 8 to 12.

Laser head 98 in FIGS. 8-10
In the parts corresponding to those in Figures 2 to 4,
They are marked with 200 plus, and I will not explain them again.

The laser head 98 belonging to the cigarette wrapping tape 84 has a radiation head 101, the construction of which is shown in detail in FIG. The laser beam generated by the resonator 239 is divided by four deflecting mirrors each having different transmittance.
Each of the laser beams is deflected into four condensing lenses 107-111, which focus four parallelly positioned laser beams onto the cigarette wrapping tape 84. The arrangement of the holes 255 drilled in the running tape 84 in this manner as shown in FIG.
1, this timing disk emits two pulses in sequence at short time intervals and the next pulse at a relatively long time interval, resulting in the hole arrangement shown in FIG. It will be done. The inspection of the perforation holes is carried out by inspection device 254 in exactly the same manner as in the previously described embodiments.

In the embodiment shown in FIGS. 11 and 12, the parts corresponding to those in the embodiment shown in FIGS.
They are marked with 300 plus and will not be explained again. A laser head 99 for making perforation holes in a paper-wrapped cigarette rod 93 has a radiation head 112, the construction of which is shown in FIG. In this embodiment, there are six segmented or deflecting mirrors 113-1.
19 and three condenser lenses 121 to 123, three laser beams are directed toward the cigarette rod Z from different sides. Each successive cigarette rod section is formed by three successive pulses emitted through the timing disk 351 at short time intervals, forming three successive ring-arranged rows of holes.

Of course, it is also possible to provide a filter rod manufacturing machine with the same laser head configuration as in the cigarette rod manufacturing machine.

Figures 13 and 14 show a coated paper tape 413 wrapped around a double length filter cigarette.
and a detailed view of an apparatus for providing perforation holes in a filter. rolling drum 422
In order to roll again the double-length filter cigarette 437 that has been transferred to the rolling drum 424, the recess 4
A rolling belt 439 is assigned to the rolling drum 424 having 38 rolls, which is constructed as a toothed belt on the inside and which has a roll 44
1,442 and the drive drum 443. According to FIG. 14, the rolling drum 439 has a number of rolling belts 439a, 43, in this example three, extending parallel to each other at intervals.
9b and 439c, both of which have on their surfaces successive high rolling surfaces 444 at intervals, the length of each of these rolling surfaces 444 being in this case the length of a double-length filter. Two recesses 4 on the rolling drum 424 for positioning the cigarette 437 before or after rolling.
38A and 438B.

A radiation source in the form of a laser device 447 is arranged inside the rolling drum 424, which consists of a plurality of drum disks 446, which according to FIG.
It has two radiating heads 448 and 449,
These are directed into the intermediate space between the rolling belts 439a and 439b or 439c and 439c. Laser device 447 is resonator 4
51, in which a laser beam is generated, which is further supplied to a condensing lens 453 of the radiation head 449 via a semi-transparent deflection mirror 452, and to the radiation head 449 via a deflection mirror 454. 448 is supplied to a condenser lens 456 . Condensing lenses 453 and 456 direct the separated laser beams to a double-length filter cigarette 437.
Focusing onto the covered paper tape 413 of.
In this case, the double length filter cigarette 437 is first received from the rolling drum 422 into the recess 438A, in which case all the recesses 438 are connected to the suction passage 457.
(This is shown in the drawing as just 2
(shown for only one recess). When the double-length filter cigarette 437 reaches the radiation range of the laser device 447 on the conveying path of the rolling drum 424, the double-length filter cigarette 437 is moved in the opposite direction with respect to the rolling drum 424 at an equal circumferential speed. Rolling surface 4 of rolling drum 439
44 leading edges, thereby precisely stopping the laser beam at the point directed at the double-length filter cigarette and rotating about the double-length filter cigarette axis. I am forced to do it. During this movement process, a laser device 447 , shown as a conductor 458 , is used to machine a ring-shaped array of equally spaced holes on the covering paper tape 413 or on one end of the mouthpiece of the double-length filter cigarette 437 . The energy supply is provided with a pulse generator 459, which is shown as a mechanical switch for clarity. In order to coordinate the pulse train of the laser beam with the rotational speed of the double-length filter cigarette 437, a control device is provided, which includes a timing disk 461, an approach transmitter, driven from the main drive of the filter installation machine. 462 and adjustment element 4
It consists of 63. The timing disk 461 has control segments 464 on its outer periphery, each of these control segments 464 having, as shown in more detail, a control tooth 466, each having ten teeth in the illustrated embodiment. segment 46
It is manufactured as 4A.

When one double length filter cigarette 437A reaches the capture range of the rolling belt 439 on the rolling drum 424 and the leading edge of the rolling surface 444A captures the double length filter cigarette 437A and begins to rotate it; Control segment 464A
The first leading tooth 466A of faces the approach transmitter 462 so that a first signal is transmitted to the adjusting element 46.
3 and the first 1 of the laser device 447
beam pulses are emitted. rolling drum 42
4, the rolling surface 424A of the rolling belt 439 and the rolling surface 444A of the rolling belt 439 are moving at the same height and at opposite circumferential speeds, so the cigarette 437A is stationary at one place and rotated around its axis. The rolling surfaces 424A and 444A pass along the upper or lower side of the cigarette 437A. The teeth 466 of the control segment 464A pass the proximity transmitter 462 in synchronization with this rotational speed, so that ten equally spaced holes in sequence are activated by the corresponding pulse train of the laser device 447 in the double-length filter cigarette 437A. A hole is made on the outer circumferential surface of the mouth piece.

During this operating process, the leading recess 438A of the rolling surface 424A releases the double-length filter cigarette 437A, while the trailing recess 438B releases the double-length filter cigarette 437A.
At the end of the rotational movement of the double-length filter cigarette 437A, the cigarette 437A is reached, and the gap 467 between the rolling surface 444A and the next rolling surface 444B of the rolling belt 439 releases the double-length filter cigarette 437A. The cigarettes are instantly received and carried out.

The resonator 451 additionally has a variable preresistance 468, which can be supplied with a signal for varying the output of the laser device 447 in a manner not shown. The signal can be taken out, for example, at a testing device for testing the air permeability of perforation holes machined in double-length filter cigarettes.

In the embodiment of FIGS. 15 and 16, the double length filter cigarettes 501 are on a transverse conveyor in the form of a rolling drum 502, which conveys the cigarettes transversely at right angles to the longitudinal direction. On the rolling drum 502, a double length filter cigarette 501 is placed in a recess 503a or 503.
These recesses have suction air connections 504 for cigarette retention. Assigned to the rolling drum 502 is a roller body 506 which has alternating protrusions and depressions at a distance corresponding to the diameter of a cigarette, preferably a smaller distance. The two recesses 503a of the rolling drum 502
and 503b.

The roller body 506 can be driven to rotate in the opposite direction to the rolling drum 502. The roller body 506 has a total of three roll cylinder rolls 509, 511 and 512 distributed over its entire length, each of which has a corresponding rolling surface 507 as described above. The middle cylindrical roll 511 is located exactly in the middle of the covering paper tape 513 surrounding the double length filter cigarette 501. One condenser lens is shown at each end of the cylindrical roll 511.
A radiation head 514 or 516 of a laser device 517 is arranged. The laser device 5 is configured such that one laser beam is emitted from each radiation head 514 or 516.
The laser beam leaving 17 is split by a slightly tilted beam splitter 518 outside the production machine, one partial beam being split by a deflecting mirror 5.
19, and both laser beams are further reflected by further deflecting mirrors 521, 522, 523,
524, 526 and 527 and radiation head 51
4 or 516 to the double length filter cigarette 501. In FIG. 15, one partial beam is shown only up to deflection mirror 519, and only the other partial beam is shown completely.

According to the illustrated embodiment, a single laser device 5
In addition to 17, it is also possible to provide a second laser device 526', which is shown in broken lines.
In this case, there is no need to split the beam exiting laser device 517, and a second beam can be obtained by laser device 526'. The advantage of this configuration is that power losses or partial beam deflections occurring during beam splitting are eliminated. The laser device 517 further includes, in a known manner, a gas cylinder 527' with an inlet conduit 528 and an outlet conduit 529, a coolant tongue 531 with an inlet conduit 532 and an outlet conduit 533, and an energy generating device with high-pressure connections 536 and 537. Unit 534 belongs to it.

Furthermore, this energy generator unit 53
8, which is operatively connected to an approach transmitter 539, which belongs to a control segment 541, which controls the rolling drum 5.
02 in a ring shape, or can be driven at the speed of this rolling drum.
For clarity of drawing, control segment 54
Only a portion of 1 is illustrated. Two recesses 503a and 503 of the rolling drum 502
The control segment 541 that belongs to each rolling surface 508 between b has ten timing pulse generators 542 in each case.

The double-length filter cigarettes 501 are conveyed to the rolling drum 502 and sent to the radiant heads 514 and 51.
Upon reaching the radiation range of 6, this double-length filter cigarette 501 moves against the corresponding rolling surface 50 of one of the roller bodies 506, which is moved in the opposite direction with respect to the rolling drum 502 and with the same circumferential speed.
7 and held precisely stationary at the point at which the laser beam is directed in this manner, and in this case the axis of the double-length filter cigarette. It can be rotated around the center. A timing pulse generator 542 passing past the approach transmitter 539 in synchronization with this rotational speed sequentially issues ten control signals to the control unit 538 of the laser device, which causes the laser device to transmit ten control signals in each case in the corresponding sequence of pulses. Double length filter cigarette with rotating holes 5
Process the peripheral surface of 01. During this process, the double length filter cigarette 501 is ejected from the recess 503a which transports it into the beam radiation range. In this case, the suction air reaches at least the cylindrical roll 5 in the recess.
In the outer end regions opposite 09 and 512, it is reduced for a short time or completely eliminated. At the end of this rolling process, the following recess 503b in each case reaches the double-length filter cigarette 501 and receives it with the aid of the suction pneumatic force. At this moment, the recess between the two corresponding rolling surfaces 507 of the roller body 506 reaches the rotating or rolling double-length filter cigarette, so that the double-length filter cigarette can be carried out unhindered. Ru. The rolling surface 508 of the rolling drum 502 is roughened to increase contact friction.

According to the alternative embodiment of FIG. 17, the double length filter cigarette 601 is again
transported on top. In this case, each double-length filter cigarette 601 being conveyed is held in a shallow recess 603 in a manner not shown by suction air;
In this case, each double length filter cigarette 60
A covering paper piece 604 is attached to 1,
Alternatively, it is also held on the outer peripheral surface of the drum by intake air. The rolling drum 602 is provided with rolling drums 602 in a known manner at intervals equal to or somewhat smaller than the cigarette diameter.
A stationary rolling platform 606 is assigned which has a corresponding rolling surface 608 opposite the rolling surface 607 of 02. A rolling table 60 is placed at the entry end of the gap formed between the rolling surface 607 and the corresponding rolling surface 608.
6 has a rolling web 609, and the distance of the web from the rolling surface 607 is equal to the rolling surface 60.
7 and the corresponding rolling surface 608.

Another drum 6 is located within the range of the rolling table 606.
11 is provided, and the drum 611 has a flat deflecting mirror 612 on its outer circumferential surface. As the drum 611 rotates, the deflection mirror 612 passes through the laser beam path of the laser device 613 and the laser beam is deflected towards the double length filter cigarette 601 located below the rolling table 606. For this purpose, the rolling platform 606 has corresponding recesses or passage slots (not shown). A further laser device located behind the laser device 613 for processing the second row of ring-shaped holes into a double-length filter cigarette is not shown. Into the recess 603 of the rolling drum 602, at a feeding point (not shown), a filter having a length twice the length actually used is axially clamped between the ends, and a piece of covering paper 604 is attached to the filter. A double-length filter cigarette 601 consisting of two cigarettes is fed by rolling a covering paper strip 604 against a rolling surface 607 of a drum 602. The double-length filter cigarette 601 is held in the recess 603 by suction air in the area between the supply point and the rolling table 606. The coated paper strips 604 are retained during the transport process from the supply point to the entrance of the rolling table 606 by means of suction holes (not shown) centered between the recesses 603 in the rolling surface 607 of the rolling drum 602 .
On entering the underside of the rolling table 606, the double-length filter cigarette 601 is caused to start rolling by the rolling web 609, in other words it rolls out of the recess 603 in which it was previously received, in this case a piece of covered paper. 604 is gradually wrapped around the double length filter cigarette 601.

This movement process is similar to that of a double-length filter cigarette.
1 at the position indicated by the symbol A.
Since the recess 603 is extremely flat, the double-length filter cigarette 601 also rolls past the following recess 603. At position B, the double length filter cigarette 601 has rotated one complete turn about its axis. In this position B, the laser device 613 is activated by the means described above, in which case the emitted laser beam pulses are directed at a predetermined angle of incidence onto the mirror 61 in the radiation range of the laser device 613.
2a, from which it is accurately reflected at right angles and reaches the double length filter cigarette 601 located at position B. The intensity and duration of the laser beam is such that in this case the beam is
It is controlled so that it completely penetrates 1. When the double length filter cigarette 601 reaches position C,
The drum 611 and thus the mirror 612a move together in the direction of the arrow by a corresponding angle of rotation, in which case the re-emitted beam pulses of the laser device 613 are transferred to the mirror 612a by the laser device 613.
Due to the change in position relative to the mirror 612a, it is incident on the mirror 612a at a flatter angle of incidence and is correspondingly reflected to the double length filter cigarette 601 shown in solid line, in other words perpendicular to said cigarette; The cigarette 601 is completely penetrated again. Then another beam pulse is emitted at a still smaller angle of incidence at position D of the double-length filter cigarette 601, again indicated by the dashed line. Three through holes, in other words, six through hole openings are machined on the outer periphery of the double length filter cigarette 601 in the above manner. By suitably varying the pulse train of the laser device 613, it is, of course, also possible to machine a larger number of holes into a double-length filter cigarette. Between the movement of the mirror 612a out of the radiation range of the laser device 613 and the movement of the next mirror 612b into the radiation range, the next double-length filter cigarette 601 completes wrapping of its covering paper strip 604. Sufficient time is allowed for the subsequent perforation hole to be machined through the mirror 612b upon reaching positions B, C, and D.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic diagram of a filter mounting machine, FIG. 2 is a diagram showing a laser head to which the covering tape drawing device of the filter mounting machine of FIG. 3 shows a laser head for the apparatus of FIG. 2, FIG. 4 shows a section of coated tape with holes cut out by the laser head of FIG. 3, and FIG. 5 shows a horizontal section for a filter cigarette. Figure 6 shows a detailed view of the laser head of Figure 5; Figure 7 is a schematic diagram of the cigarette strand manufacturing machine; Figure 8 shows the cigarette of Figure 7. A diagram showing the laser head belonging to the covering tape of the strand-making machine; FIG. 9 is a detailed diagram of the laser head in FIG. 8;
FIG. 10 shows the sections of the coated tape in which perforation holes have been machined by the laser head of FIG. 9, and FIG. 11 shows the laser heads belonging to the strands coated by the machine of FIG. 7. , FIG. 12 is a detailed view of the laser head of FIG. 11, FIG. 13 is a view of the rolling device associated with the laser device, belonging to the transverse conveyor of the machine of FIG. 1, and FIG. XI-XI in Figure 13
FIG. 15 is a partial vertical cross-sectional view of the device according to a line showing a filter cigarette on the transverse conveyor of FIG. FIG. 16 is a front view of the lateral conveyor shown in FIG. 15, and FIG.
FIG. 7 is a diagram showing an apparatus for forming perforation holes in a filter cigarette while it is rolling during lateral conveyance. 1... entry drum, 2... deposition drum, 3...
Assembly drum, 4...Magazine, 6...Cutting drum, 7...Disk cutter, 9...Pushing drum, 12...Delivery drum, 11...Acceleration drum, 13...Coated paper tape, 17...Spare cutter , 18... Gluing device, 19... Covering roller, 22... Rolling drum, 23... Rolling plate,
24... Drying drum, 26... Cutting drum, 27
...Delivery drum, 28...Collection drum, 29...
Turning device, 31... Inspection drum, 32... Discharge drum, 33... Braking drum, 34... Carrying out drum, 36... Carrying out belt, 37... Laser head, 38... Laser head, 39... Resonator ,
41... Radiation head, 43... Condensing lens, 44
... Deflection mirror, 46 ... Condenser lens, 47 ... Conductor, 48 ... Pulse generator, 49 ... Control device, 51 ... Timing disk, 52 ... Approach transmitter, 53 ... Adjustment element, 54...detection device, 55
... hole, 56 ... measurement chamber, 57 ... measurement device, 5
8...Integrator, 59...Target value generator, 61...
... Comparison device, 62 ... Control unit, 63 ... Preresistance, 64 ... Adjustment element, 77 ... Cigarette conveyor belt, 78 ... Cigarette passageway, 79 ... Molding ring, 8
1... Leveling device, 82... Tobacco strand,
83... Strand conveyor, 84... Cigarette paper tape, 86... Bobbin, 87... Printing device, 88... Forming belt, 89... Mold, 91...
Gluing device, 92... Seam forming plate, 93... Cigarette rod, 94... Cutter device, 96...
...Accelerator, 98...Laser head, 99...
Laser head, 101... Radiation head, 112
... Radiation head, 107, 108, 109, 11
0,111...Condensing lens, 113,114,1
15, 116, 117, 118, 119... Deflection mirror, 121, 122, 123... Condensing lens, 1
66... Radiation head, 167... Mirror, 168,1
69,170,171,173,174... Deflection mirror, 172... Condenser lens, 176... Condenser lens, 251... Timing disc, 254... Inspection device, 255... Hole, 351... Timing Disc, 413...covered paper tape, 422...rolling drum, 424...rolling drum, 437...2
Double length filter cigarette, 438... recess, 43
9...Rolling belt, 439a, 439b, 43
9c... Rolling belt, 441, 442... Roll, 443... Drive drum, 444... Rolling surface, 446... Drum disk, 447... Laser device, 448, 449... Radiation head, 451...
... Resonator, 452 ... Deflection mirror, 453 ... Condenser lens, 454 ... Deflection mirror, 448 ... Radiation head, 456 ... Condenser lens, 457 ... Suction passage, 458 ... Conductor, 461 ... Timing disk, 462... Proximity transmitter, 463... Adjustment element, 464... Control segment, 464... Teeth,
466...teeth, 468...variable preresistance, 501
... Double length filter cigarette, 502 ... Rolling drum, 503 ... Recess, 504 ... Suction air connection section, 506 ... Roller body, 507 ... Corresponding rolling surface, 508 ... Rolling surface, 509, 511,
512... Cylindrical roll, 513... Covered paper tape, 514, 516... Radiation head, 517...
Laser device, 518...Divider, 519, 52
1,522,523,524,526,527...
...Deflection mirror, 526'...Laser device, 528...
...Inlet conduit, 529...Outlet conduit, 527'...Gas cylinder, 531...Cooling medium tank, 532...
... Inflow conduit, 533 ... Outflow conduit, 534 ... Energy generator unit, 538 ... Control unit, 539 ... Approach transmitter, 541 ... Control segment, 542 ... Timing pulse generator,
601...Double length filter cigarette, 602...
... Rolling drum, 603 ... Recess, 604 ... Covered paper strip, 606 ... Rolling table, 607 ... Rolling surface, 608 ... Corresponding rolling surface, 609 ... Rolling web, 611 ... Drum, 612 ... Deflection mirror,
613...Laser device.

Claims (1)

[Scope of Claims] 1. In a machine for manufacturing rod-shaped articles used in the tobacco processing industry, there is provided an apparatus for forming a section having a desired air permeability in a covering material of the rod-shaped article, wherein the rod-shaped article manufacturing machine has a at least one beam source 37, 38, which generates a beam of
98, 99, and a pulse generator 51, 151, 251, 351 for generating beam pulses in order to machine a desired number of holes in a desired area of the coating material, and the above-mentioned The desired air permeability of the covering material of the rod-like articles in the rod-like article-making machine is characterized in that it is associated with a control device which is drive-connected to the rod-like article-making machine drive for the synchronization of the pulse generator. device for forming sections having a 2 Beam generation source is laser device 37, 38, 9
8.99. Apparatus according to claim 1. 3 The laser devices 37, 98 are the coating devices 23, 3
9, in which case the pulse generator 48 of the laser device is synchronized by the control device 49, 249, in which case the pulse generator processes the desired number per unit length of the coating material. 2. The device according to claim 1, wherein the device is adapted to the running speed of the coating material that is continuously fed into the coating device. 4 A lateral conveyor 28 on which a laser device 38 conveys the bar-shaped article in a direction transverse to the longitudinal direction of the bar-shaped article.
, on which the projecting end of the article intersects the laser beam path of the laser device, in which case the control device 149 synchronizes the pulse generator 48 to the conveying timing, so that one Apparatus according to claim 1, wherein at least one hole is machined in the rod-shaped article as it passes through the laser device. 5. A laser device 99 belongs to the strand conveyor conveying the strand 93 surrounded by the coating material, in which case the pulse generator 48 is synchronized to the strand speed by the control device 349 and the laser device 99 is attached to a selected circumferential section of the strand. 2. A device as claimed in claim 1, in which a predetermined number of holes are machined. 6. A monitoring device 54 for the section with the desired ventilation to control the size of the holes in said section.
Claim 1 in driving connection with an adjustment member 53 for varying the radiation energy of the laser device.
Apparatus described in section. 7. A monitoring device 54 for forming a section with the desired ventilation is in driving connection with an adjusting member 64 for displacing the laser beam focus of the laser device in order to control the size of the holes in said section. An apparatus according to claim 1. 8 Formation of a section having the desired air permeability of the rod-shaped article coating material in a rod-shaped article manufacturing machine for manufacturing rod-shaped articles used in the tobacco processing industry and transporting the rod-shaped articles in a transverse direction perpendicular to the axial direction thereof. In the apparatus for carrying out the invention, a transverse conveyor is provided, which is manufactured as a rolling drum 424, 502, for conveying the bar-shaped articles transversely at right angles to their axis, and the rolling drum is provided with The corresponding rolling surfaces 439, 507 driven by
In this case, the speeds of the rolling drum and the corresponding rolling surface are made equal to each other, and the rod-shaped articles 437, 501 guided between the rolling drum and the corresponding rolling surface are stopped and their axes are a radiation source 447 for coherent beam radiation, which is rotated about its center and to the extent that it remains stationary on the rod-shaped article, during its rotation;
A beam can be emitted from 517, and a pulse generator 459, 538 is associated with the radiation source for generating beam pulses in order to machine the desired number of holes in the coating material around the rod-shaped article. In a rod-shaped article manufacturing machine for manufacturing rod-shaped articles used in the tobacco processing industry and transporting the rod-shaped articles in a transverse direction perpendicular to the axial direction thereof, the rod-shaped article coating material is provided with desired air permeability. A device for forming sections with. 9 Radiation source 47,517, pulse generator 45
9,538 drive-connected control devices 461, 462, 46 of the production machine main drive for synchronization
Apparatus according to claim 1, to which No. 3,539,541,542 belongs. 10. The apparatus of claim 8, wherein the radiation source is a laser device 447. 11. Device according to claim 8, in which the corresponding rolling surface is constructed as a rolling belt 439. 12. The radiation source 447 has two radiation heads 448, 449 arranged in parallel in the longitudinal direction of the article for machining holes in the coating material of the composite article 437. Device. 13. The device of claim 8, wherein the radiation source 447 is arranged inside the rolling drum 424. 14 The rolling belt 439 has successive protruding rolling surfaces 444 at intervals, the length of the rolling surface being the length of the article 437 after rolling and rolling.
9. The apparatus of claim 8, wherein the distance between the two recesses 438A and 438B on the rolling drum 424 is equal to the distance between the two recesses 438A and 438B. 15. Device according to claim 8, in which the rolling belt 439 is manufactured as a toothed belt. 16 Rolling belt 439 or multiple toothed belts 439a arranged parallel to each other at intervals
9. A device according to claim 8, comprising a plurality of toothed belts 448, 449 and radiating heads 448, 449 directed at the intermediate space between these toothed belts. 17. The apparatus according to claim 8, wherein the endless conveyor serving as the corresponding rolling surface is a roll 506, and the roll 506 has alternating projections 507 and recesses 505 on its outer periphery. 18 The circumferential length of the convex portion 507 allows the two recesses 50 on the rolling drum 502 to position the article 501 before and after rolling in the desired position.
18. The device of claim 17, wherein the spacing is equal to that of 3a and 503b. 19 Three cylindrical rolls 509, 51 for roll 506 to grip and roll the compound article 501
1,812, of which the central cylindrical roll 511 has one radiation head 513 or 516 on each side, each of which has a single laser beam splitter. 18. Device according to claim 17, which belongs in common to the device 517. 20. Device according to claim 17, in which each side of the central cylindrical roll 511 has a laser device 517 or 526 assigned thereto. 21 In a bar-shaped article manufacturing machine that manufactures bar-shaped articles used in the tobacco processing industry and conveys the rod-shaped articles in a transverse direction perpendicular to the axial direction, the rod-shaped articles are coated with sections having the desired air permeability. In the forming apparatus, the article 601 is placed on a rolling surface 607.
The article is conveyed on a lateral conveyor 602 that conveys the article laterally at right angles to the axial direction, and
and a stationary counterrolling surface 608 is assigned to the transverse transport conveyor, and a device is provided for deflecting the laser beam applied to the articles during their transfer and self-rotation into the area of said counterrolling surface. In a rod-shaped article manufacturing machine that manufactures rod-shaped articles used in the tobacco processing industry and conveys the rod-shaped articles in a transverse direction perpendicular to the axial direction thereof, a section having a desired air permeability is formed in the rod-shaped article covering material. Forming device. 22 The immovable corresponding rolling surface 608 is the rolling table 60
22. The device of claim 21, which is part of 6. 23 device 611 for deflecting a laser beam;
22. The apparatus of claim 21, wherein the device 612 or the device 613 for generating the laser beam is controlled such that a complete through hole is machined in the article 601. 24 The lateral conveyor is a rolling drum 602
22. The device of claim 21, constructed as: 25. A device for deflecting the laser beam is arranged on the outer periphery of the drum 611 which is driven to rotate.
22. The device of claim 21, comprising a flat mirror 612 for deflecting an incident laser beam towards the article 601. 26. The device according to claim 21, wherein during rolling of the article 601 each pulse of the laser beam is applied at a corresponding right angle to the article by means of a respective different angle of incidence or reflection of the mirror 612.