JPH09275962A - Apparatus for installing filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter installing device for forming double filter cigarette capable of reducing top drop failure of a filter cigarette and improving productivity by providing the apparatus with a reducing means for reducing contact with a rolling passage to each cigarette of an intermediate product. SOLUTION: This apparatus for installing filter is equipped with a feeding means of a coke drum, etc., for feeding a chip paper piece along a prescribed feed passage, a rolling plate 48 arranged along the feed passage and forming a rolling passage between the feed passage and a conveying means for conveying an intermediate 1 of double filter cigarette positioning a filter plug between two pieces of cigarette and in forming a double filter cigarette by wrapping the chip paper piece from the feed passage around the intermediate 1 while rolling the intermediate 1 in the rolling passage, the apparatus is equipped with a means for reducing a pair of right and left recessed parts 54, etc., to each cigarette of the intermediate 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter mounting device for manufacturing a double filter cigarette corresponding to two filter cigarettes from two cigarettes and a filter plug.

[0002]

2. Related Background Art As is well known, a double filter cigarette has a filter plug positioned between two cigarettes to form an intermediate product of the double filter cigarette.
A chip paper piece is wrapped around this intermediate product, and both cigarettes and filter plugs are connected to each other. After this, the double filter cigarette is cut from its center into individual filter cigarettes.

In forming the above-mentioned double filter cigarette, the filter cigarette manufacturing machine is equipped with a filter mounting device, an example of which is disclosed in JP-A-63-196257 or JP-A-4-21355. There is. However, a general filter mounting device basically has a supply means for supplying the chip paper piece along a predetermined supply path, and a rolling passage formed between the supply path of the supply means and the rolling plate. When the intermediate product of the tipping paper piece and the double filter cigarette described above is introduced into the rolling passage, the intermediate product rolls in the rolling passage, and the tip is used by utilizing this rolling. A piece of paper is wrapped around the intermediate product, thereby forming a double filter cigarette. In addition, since the tip paper piece is wound around the intermediate product, one surface of the tip paper piece is an adhesive surface.

[0004]

In recent years, in order to improve the productivity of filter cigarette making machines, the speed of transporting intermediate products tends to increase more and more. For this reason, in order to stably wind the tip paper around the intermediate product, that is, to improve the tightness of the wrap portion of the tip paper piece, the intermediate product is allowed to roll a plurality of times in the rolling passage. .

However, when the intermediate product rolls, the intermediate product is sandwiched between the supply path and the rolling plate, so that each cigarette of the intermediate product has to be rolled more times. The more the cut tobacco inside is rubbed and loosened, the lower the hardness of the cigarette. Further, in the filter cigarette manufacturing machine, the double filter cigarette itself is transferred in the process of being further conveyed from the rolling passage,
In addition, cut cigarettes easily come off from individual filter cigarettes obtained by cutting this double filter cigarette,
The cut tobacco came off from the tip of the filter cigarette,
A so-called dropout defect occurs.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the hardness of the cigarette portion of the filter cigarette from being reduced, and at the same time,
It is an object of the present invention to provide a filter mounting device capable of reducing the falling of cut tobacco and preventing the defective falling of the filter cigarette.

[0007]

The above-mentioned object is achieved by the present invention, and the filter mounting device according to claim 1 has a supply means for supplying a chip paper piece along a predetermined supply path, and a supply means for supplying the chip paper piece. And a conveying means for conveying an intermediate product of a double filter cigarette in which a filter plug is positioned between two cigarettes in the rolling passage. For each cigarette of the intermediate product, there is provided a reduction means for reducing the contact with the rolling passage.

According to the filter mounting device of the first aspect, when the intermediate product is conveyed to the rolling passage, the cigarettes of the intermediate product are rolled while the contact with the rolling passage is reduced. Pass through the passage while rolling. Therefore, in each of the intermediate product cigarettes, the loosening and loosening of the cut tobacco inside the cigarettes is reduced, and the hardness of each cigarette is maintained even after passing through the rolling passage.

In the filter mounting device of the second aspect, the reducing means includes a step provided on at least one of the supply path and the rolling plate. In this case, when the intermediate product passes through the rolling passage, the step reduces the contact area of the rolling passage with respect to each cigarette of the intermediate product. According to a third aspect of the present invention, the filter mounting device includes a pair of recesses whose steps are separated from each other on the rolling plate side in the passage direction of the rolling passage, and the recesses extend in the passage direction of the rolling passage. In the case of claim 3, although the intermediate filter plug is firmly sandwiched between the supply path and the rolling plate, the cigarettes located on both sides of the filter plug have a pair of left and right recesses, so that the cigarettes are separated from the rolling plate. Contact is reduced.

In the filter mounting device according to the fourth aspect, the pair of left and right recesses extends in the passage direction except the inlet portion of the rolling passage in which the intermediate product first makes one rotation. Claim 4
In the case of, the intermediate product that has entered the entrance of the rolling passage rolls for the first revolution in a state where both the cigarette and the filter plug are firmly sandwiched between the supply passage and the rolling plate. A piece of tip paper is wrapped around the intermediate product.

In the filter mounting device of the fifth aspect, the rolling plate further has a pair of left and right rolling surface portions, and these rolling surface portions are positioned outside the pair of left and right recesses. In this case, the intermediate product passing through the rolling passage rolls with the filter plug sandwiched between the supply passage and the central portion of the rolling plate, and each cigarette is partially rolled. It rolls while being sandwiched between the supply path and the pair of left and right rolling surface portions of the rolling plate.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIG. 1, a filter cigarette manufacturing machine is schematically shown, and a manufacturing process of the filter cigarette is also shown on the lower side thereof. The filter cigarette manufacturing machine includes a main frame 2, and a drum row 4 is arranged on the right side portion of the main frame 2 as viewed in FIG. The drum row 4 constitutes a conveyance path for a double cigarette or a single cigarette, and extends to the rolling section (filter mounting device) 6.

The drum row 4 is composed of a plurality of grooved drums, and a large number of conveying grooves are provided on the outer peripheral surface of each grooved drum at equal intervals in the circumferential direction. In drum row 4,
The grooved drum located at the rightmost end is the inlet drum 8, and the double cigarette D is sequentially supplied to each of the conveying grooves of the inlet drum 8. The double cigarette D is manufactured by a cigarette manufacturing machine called a so-called hoisting machine,
Its length is twice as long as the cigarette portion of the filter cigarette.

The double cigarette D supplied to the inlet drum 8 of the drum row 4 is conveyed toward the rolling section 6 while transferring to the adjacent drum on the left side as is known, as the drums in the drum row rotate. It A rotary knife 12 is attached to the grooved drum 10 in the middle of the drum row 4.
The rotary knife 12 cuts the double cigarette D conveyed on the grooved drum 10 from the center thereof, whereby two single cigarettes from the double cigarette D are cut on the grooved drum 10. The cigarette S is obtained. Further, the two single cigarettes S obtained by cutting are used in the subsequent conveying process, that is, the grooved drum 1
On the two grooved drums, which are successively adjacent to the left side of 0, they are separated from each other in the axial direction, and a predetermined space is secured between these single cigarettes S. The manufacturing procedure from the above-mentioned double cigarette D to obtaining the two single cigarettes S separated from each other is shown in the area A1 in the manufacturing process of FIG.

As shown in FIG. 1, a filter plug supply device 14 is arranged above the drum row 4. The filter plug supply device 14 is provided with a pair of left and right hoppers 16 on its upper part, and a large number of filter rods are stored in the hoppers 16 although not shown. A drum row 18 is arranged between the left and right hoppers 16 and the drum row 4, and the drum located at the lower end of the drum row 18 is connected to the assembly drum 20 in the drum row 4. Here, the assembly drum 20 is a grooved drum adjacent to the left side of the two separation drums used for separating the single cigarette S in the drum row 4. The drum row 18 takes out the filter rods one by one from the left and right hoppers 16 and conveys them toward the assembly drum 20 of the drum row 4. During this conveyance process, the filter rods are subjected to cutting, grading, alignment processing, etc. to become individual filter plugs F, and these filter plugs F are sequentially supplied to the assembly drum 20 of the drum row 4. Specifically, the filter plug F is positioned between the two single cigarettes S on the assembly drum 20. Here, the filter plug F has twice the length of the filter portion of the filter cigarette. When the charcoal filter rod and the plain filter rod are separately stored in the left and right hoppers 16, the filter plug F is a dual filter plug, while the left and right hoppers 16 both store the plain filter rod. If so, the filter plug F becomes a plain filter plug.

After this, the assembly drum 2 of the drum row 4
The two single cigarettes S and one filter plug F, which are combined on 0, are transferred from the assembly drum 20 to the next grooved drum, and are aligned on this grooved drum, and both ends of the filter plug F are aligned. This is an intermediate product I of double filter cigarettes in which each single cigarette S is in close contact with. Then, the intermediate product I is supplied from the grooved drum to the rolling section 6 via the outlet drum located at the leftmost end of the drum row 4. The manufacturing procedure from obtaining the intermediate product I from the A1 area is shown by the A2 area in the manufacturing process of FIG.

On the other hand, in the rolling section 6, in addition to the drum row 4 described above, a supply line for the tip paper P extends, and the supply line includes a pair of paper rolls 22,
It starts from 24. These paper rolls 22, 24
1 is arranged at the upper left end of the main frame 2 as seen in FIG. 1, and one of the paper rolls 22 is a used roll,
The other paper roll 24 is a standby roll. The tipping paper P fed from the paper roll 22 in use is guided to the rolling section 6 while being guided by a large number of guide rollers in the supply line. The supply line is provided with a paper connection device 26 and a tipper paper P reservoir 2 used for exchanging used rolls from the upstream side thereof.
8. Also, a glue applicator 30 that applies glue to one side of the chip paper P and forms one side of the glue on one side, and a heater 3 that dries the glue side of the chip paper P to some extent.
2 are sequentially arranged.

The tipping paper P supplied to the rolling section 6 is cut into predetermined tip paper pieces Pc at predetermined lengths, and these tip paper pieces Pc are supplied from the drum row 4 to the rolling section 6. The intermediate product I will be wound around one after another. More specifically, the individual chip paper pieces Pc are wound and adhered to the portion extending from the filter plug F of the intermediate product I to the ends of the single cigarettes S on both sides, whereby the two single cigarettes S are connected to the filter plug F. A double filter cigarette DFS is obtained which is connected to each other via. In addition,
The manufacturing procedure in the rolling section 6 is shown in the area A3 in the manufacturing process of FIG. The rolling section 6 will be described later.

After this, the double filter cigarette DFS
Are supplied to a drum row 34 extending from the rolling section 6 and conveyed on the drum row 34. That is,
The drum row 34 is also composed of a plurality of grooved drums similarly to the above-mentioned drum row 4, and has a double filter cigarette DFS.
With the rotation of the individual grooved drums of the drum row 34, the sheets are conveyed while sequentially moving over the grooved drums. In this transport process, double filter cigarette DFS
Is cut from its center by a rotary knife 2
The filter cigarette FS becomes a book, and thereafter, the two filter cigarettes FS are separated from each other in the axial direction and conveyed. Then, the filter cigarette FS is individually inspected for the above-mentioned drop-out, dilution and the like,
The defective filter cigarette FS is removed from the drum row 34.

A conveyor 36 is connected to the end of the drum row 34. The conveyor 36 receives the filter cigarettes FS from the drum row 34, aligns them, and then conveys them to a packaging machine (not shown). The manufacturing procedure from the rolling section 6 is shown in the area A4 in the manufacturing process of FIG. Referring to FIG. 2, the rolling section 6 is shown enlarged. The rolling section 6 includes a drum for receiving the above-mentioned tip paper P, a so-called coke drum 38. The coke drum 38 includes the outlet drum 40 of the drum row 4 and the inlet drum 42 of the drum row 34 described above. They are arranged above the inlet drum 40 and the inlet drum 42 so as to connect the two.

The outer peripheral surface of the coke drum 38 is slightly wider than the length of the intermediate product I of the double filter cigarette DFS described above, and the central portion in the width direction thereof is a suction surface over the entire circumference. Therefore, the chip paper P guided along the supply line is attracted to the suction surface of the coke drum 38 with the adhesive surface thereof facing outward, and the coke drum 38 is rotated clockwise as viewed in FIG. As it goes along, it moves with the suction surface, that is, is supplied. Here, the suction surface of the coke drum 38 is supplied with suction pressure only when the coke drum 38 passes through the rotation angle range θ with respect to the rotation of the coke drum 38. For details, as is clear from FIG.
Is adsorbed from the top of the outer peripheral surface of the coke drum 38, and the adsorption is maintained up to the rotational angle position of the coke drum 8 where the outer periphery of the coke drum 38 is close to the outer periphery of the outlet drum 40. Here, when the transport speed of the intermediate product I transported in the drum row 4 is V1, the coke drum 3
The outer peripheral surface at 8, that is, the peripheral speed V2 thereof is twice as high as the conveying speed V1 of the intermediate product I.

A bladed drum 44 that cooperates with the coke drum 38 is disposed near the outside of the coke drum 38. The bladed drum 44 is a suction member of the chip paper P when viewed in the rotation direction of the coke drum 38. It is located within the range (rotation angle range θ). The bladed drum 44 is rotated counterclockwise as opposed to the coke drum 38, and a plurality of blades 46 are provided on the outer peripheral surface thereof at equal intervals in the circumferential direction. Therefore, when the tip paper P on the coke drum 38 passes through the bladed drum 44 as the coke drum 38 rotates, the tip paper P is cut by the blade 46 of the bladed drum 44 at a predetermined length, Thus, the individual chip paper pieces Pc are formed on the suction surface of the coke drum 38. After that, the chip paper pieces Pc are supplied to the suction surface of the coke drum 38 as a supply path while being suction-held to the end of the suction area described above.

A rolling plate 48 is arranged below the coke drum 38, and the rolling plate 48 is held by a holder 50. The upper surface of the rolling plate 48 has a circular arc shape along the outer peripheral surface of the coke drum 38, and the length of the circular arc is three times the circumferential length of the intermediate product I of the double filter cigarette DFS, that is, The intermediate product I has a length of 3 rotations. The width of the rolling plate 48 along the axial direction of the coke drum 38 is substantially equal to the length of the intermediate product I. In the holder 50, the rolling plate 4
A heater 51 is housed on the 8th side, and the heater 51 heats the rolling plate 48 to an appropriate temperature.

Rolling plate 48 and coke drum 3
A rolling passage 52 that is curved downward is formed between the rolling passage 8 and the roller 8, and the vertical interval of the rolling passage 52 is set to be slightly smaller than the diameter of the intermediate product I. As is apparent from FIG. 3, on the upper surface of the rolling plate 48, a pair of left and right recesses 54 is formed in the downstream side portion of the coke drum 38 as viewed in the rotational direction of the coke drum 38. It is 0.5 to 1.0 mm. More specifically, the width W between the left and right recesses 54 is slightly longer than the filter plug F of the intermediate product I, and specifically, the width W is the same as the width of the tip paper P. Further, the pair of left and right recesses 54 has an arc length L from the upstream end of the rolling plate 48 as viewed in the rotation direction of the coke drum 38.
It is formed by placing 1 and extends in the direction of its rotation. Here, the arc length L1 is equal to the circumferential length of the intermediate product I. Therefore, when the total arc length of the rolling plate 48 is set to 3 rotation lengths of the intermediate product I as described above, the left and right concave portions 54 are The arc length L2 is twice the circumference of the intermediate product I.

A plurality of fingers 56 extend from the upstream end of the rolling plate 48 along an imaginary extended arc surface of the upper surface thereof, and these fingers 56 are circumferential grooves (not shown) formed on the outer peripheral surface of the outlet drum 40. ) Each invades. Therefore, the intermediate product I conveyed to the outlet drum 40 of the drum row 4 is scooped from the outlet drum 40 to the fingers 56, and the rolling passage 52 described above is used.
It is surely sent inside. Meanwhile, rolling plate 4
The downstream end of 8 is positioned so as to be continuous with the outer peripheral surface of the inlet drum 42 of the drum row 34.

The upper surface of the rolling plate 48 is formed as a grip surface 57 which has been knurled including the upper surfaces of the fingers 56 except for the above-mentioned left and right recesses 54. Further, a slight protrusion 58 is formed on the upper surface of the rolling plate 48 at the center of the upstream end thereof, and the protrusion 58 extends in the width direction of the rolling plate 48 longer than the width W described above.

Next, the operation of the rolling section 6 described above will be described. As shown in FIG. 4, the intermediate product I of the double filter cigarette DFS from the outlet drum 40 of the drum row 4 into the rolling passage 52 formed between the coke drum 38 and the rolling plate 48 at the conveying speed V1. When entering, the central portion of the intermediate product I, that is, the portion from the filter plug FP to the end of the single cigarette S first rides on the ridge 58 at the upstream end of the rolling plate 48, whereby the intermediate product I The whole starts rolling on the rolling plate 48. At this time, as the coke drum 38 rotates, the tip end of the chip paper piece Pc supplied at the V2 supply speed enters the rolling passage 52 in synchronization with the intermediate product I, and the tip paper piece Pc is inserted.
The tip of the glue attachment surface of c is attached to the outer periphery of the intermediate product I. At this time, since the intermediate product I is starting to roll, the outer peripheral surface of the intermediate product I is accelerated more than the conveying speed V1, and the moving speed of the outer peripheral surface of the intermediate product I and the supply speed of the chip paper piece Pc are relative to each other. The speed is almost 0. As a result, the tip portion of the chip paper piece Pc can be reliably bonded to the outer peripheral surface of the intermediate product I, and the initial bonding can be stabilized. In addition,
At this time, a gap is secured between the tip paper piece Pc that has completed the initial bonding and the intermediate product I that is about to enter the rolling passage 52 next time, and the tip paper piece Pc is the next intermediate product I. It will not adhere to.

Thereafter, since the intermediate product I is in a state of being sandwiched between the rolling plate 48 and the outer peripheral surface of the coke drum 38 with the chip paper piece Pc interposed between the intermediate product I and the coke drum 38, I moves in the rolling passage 52 while rolling at a speed corresponding to the peripheral speed V2 of the coke drum 38. At this time, the chip paper piece Pc that has entered the rolling passage 52 is in the suction area (rotation angle θ) of the coke drum 38.
Therefore, as the intermediate product I moves in the rolling passage 52 while rolling, the tip paper piece Pc is separated from the suction surface of the coke drum 38.
Then, the intermediate product I is adhered while being wrapped around the outer periphery of the intermediate product I, and finally both end edges thereof overlap each other.

Here, as described above, the coke drum 38 is used.
Since the peripheral speed V2 of the intermediate product I is twice as fast as the conveying speed V1 of the intermediate product I, when the tip paper piece Pc is completely wound around the outer periphery of the intermediate product I, that is, When the intermediate product I first rolls one revolution in the moving passage 52, the trailing edge of the tip paper piece Pc moves past the next intermediate product I, whereby the next intermediate product I is moved. Also in the case of the next chip paper piece Pc, these will enter the rolling passage 52 in synchronization with each other as described above.

A knurled grip surface 57 is provided on the upper surface of the rolling plate 48 in a region in which the intermediate product I first rolls once in the rolling passage 52. Since 57 covers the entire length of the intermediate product I, the intermediate product I is the rolling plate 48.
The tip paper piece Pc can be stably wound around the intermediate product I by rolling without slipping on the grip surface 57.

Thereafter, the intermediate product I, in which the chip paper piece Pc is completely wound, that is, the double filter cigarette DFS is sandwiched between the coke drum 38 and the rolling plate 48 as the coke drum 38 rotates. Then, it moves in the rolling passage 52 while rolling twice more,
After that, it exits from the rolling passage 52, and is transferred to the inlet drum 42 of the drum row 34 described above.

As described above, since the rolling plate 48 is heated by the heater 51 in the holder 50, the glue adhering surface of the wound tip paper piece Pc is quickly dried to ensure the adhesion. Will be things. Here, when the double filter cigarette DFS rolls twice in the rolling passage 52, the rolling plate 48
Since a pair of left and right recesses 54 as described above are formed on the upper surface of the double filter cigarette DFS, as is clear from FIG. 5, only the central portion of the double filter cigarette DFS, that is, the portion around which the tip paper piece Pc is wound. It only contacts the grip surface 57 of the rolling plate 48, and the left and right single cigarettes S do not substantially contact the rolling plate 48. Therefore, at this time, the cut cigarettes in the left and right single cigarettes S are less likely to be rubbed and loosened by the rolling, and the hardness of these single cigarettes S can be maintained.

The following table shows the results obtained by extracting the filter cigarettes FS manufactured by the filter cigarette manufacturing machine and measuring the hardness of the cigarette portions of these filter cigarettes FS in two directions orthogonal to each other. , The difference between the strain rate of the cigarette before rolling on the rolling plate and the strain rate of the cigarette portion of the cigarette portion of the filter cigarette FS after rolling on the rolling plate 48 of the present invention and on the conventional rolling plate, that is, It shows an increase in strain rate accompanying rolling and passing over a rolling plate. (Note that the measured value represents the amount of deformation of the cigarette portion when a load is applied to the filter cigarette FS, as a strain rate (%),
The vertical direction is when the load is applied from the wrap portion of the wrapping paper. )

[0034]

[Table 1]

As is clear from Table 1, when the rolling plate 48 of the embodiment is used, the strain rate of the cigarette portion of the filter cigarette FS is suppressed to be small as compared with the case where the conventional rolling plate is used.
This indicates that when passing through the rolling section 6, in the cigarette portion of the double filter cigarette DFS, the degree of loosening of the cut tobacco is reduced and the hardness thereof is maintained.

Therefore, the double filter cigarette DFS sent from the rolling section 6 is transferred to the drum row 34.
In the process of being transported over, the hardness of the cigarette part is maintained and at the same time, the double filter cigarette D
Dropping of the cut tobacco from both ends of the FS and from the tip of the individual filter cigarette FS is reduced. That is, comparing the amount of cut tobacco after the double filter cigarette DFS passed through the rolling section 6 between the case where the conventional rolling plate is used and the case where the rolling plate 48 of this embodiment is used, FIG. As is clear from the white bar, the rolling plate 48 in the working row significantly reduces the amount of cut tobacco that falls off. As is clear from the shaded bars in FIG. 6, the large amount of cut tobacco that has fallen before passing through the rolling section 6 is due to the cut tobacco falling off from the cut end of the double cigarette D when it is cut. .
Also, when using a conventional rolling plate,
The amount of cut tobacco cuts after passing through rolling section 6 is greater than before passing through rolling section 6.
When the rolling plate 48 of the embodiment is used,
Compared to before passing through the rolling section 6, after the passing, the amount of cut tobacco can be greatly reduced.
This is because when the rolling plate 48 of the embodiment is used, the loosening and loosening of the cut tobacco in the double filter cigarette DFS in the rolling section 6 is reduced.
This is because the hardness of the double filter cigarette DFS and the individual filter cigarettes FS is maintained even after passing through the rolling section 6. As a result, the dropout defect of the filter cigarette FS is significantly reduced, and the production efficiency thereof can be improved.

The present invention is not limited to the above-described embodiment, but various modifications can be made. For example, the rolling plate 60 shown in FIG. 7 also has a pair of left and right recesses 62 formed on its upper surface, but these recesses 62 differ from the recesses 54 of the rolling plate 48 in FIG. 3 in the following points. That is, the recess 54 is formed by the rolling plate 4
8 is provided only on the downstream end side, whereas the recess 62
Extends over the entire area of the rolling plate 60 from the upstream end to the downstream end. Further, the concave portion 62 is formed by leaving both side edges of the rolling plate 60, whereby a pair of left and right grip surfaces 64 similar to the central grip surface 57 is secured on both side edges of the rolling plate 60. . Therefore, in the rolling passage 52 of the rolling section 6, the intermediate product I and the double filter cigarette DFS are
When they pass while rolling, their ends are
It is supported by a pair of left and right grip surfaces 64 of the rolling plate 60 indicated by a chain double-dashed line, and these grip surfaces 6
Roll over 4. Therefore, in this case, it is possible to reduce the contact of the rolling plate 60 with the intermediate product I and the double filter cigarette DFS, and to secure stable support and rolling of these.

Even in the rolling plate 48, the left and right recesses 54 can be extended over the entire area from the upstream end to the downstream end of the rolling plate 48. In this case, the rolling plate 48 for the intermediate product I is Contact can be further reduced. In any of the above-described embodiments, a step is provided on the upper surface of the rolling plate in order to reduce the contact between the intermediate product I and the double filter cigarette DFS with the rolling passage 52, but the present invention is not limited to this. As shown in FIG. 5, on the outer peripheral surface of the coke drum 38, both sides of the suction surface 66 may be slightly smaller in diameter than the suction surface, thereby reducing the contact. In this case, the rolling plate 68 similar to the conventional one can be used as the rolling plate cooperating with the coke drum 38.

[0039]

As described above, according to the filter mounting device of the first aspect, when forming the double filter cigarette, contact between the intermediate product and the double filter cigarette itself with respect to the rolling passage is reduced. Therefore, when these pass while rolling in the rolling passage,
Rubbing and loosening of cut tobacco in intermediate products and double filter cigarettes is reduced, and the hardness can be maintained. Furthermore, in the subsequent transportation process, it is possible to prevent the cut tobacco from falling off from the double filter cigarettes or individual filter cigarettes, and to reduce the occurrence of defective tipping.

According to the filter mounting device of the second aspect, it is possible to reduce the contact of the rolling passage with the intermediate product and the double filter cigarette only by providing the step on the rolling plate. According to the filter mounting device of claim 3, the step of the rolling plate can be easily realized by the pair of left and right recesses, and according to the filter mounting device of claim 4, the pair of left and right recesses is the inlet portion of the rolling passage. Since the intermediate product that has entered the entrance of the rolling passage can be stably rolled in the first rotation, the tip paper piece can be reliably wound around the outer periphery of the intermediate product. Further, according to the filter mounting device of the fifth aspect, since the rolling plate further has a pair of left and right rolling surfaces on both side edges, both ends of the intermediate product and the double filter cigarette are supported by the pair of left and right rolling surfaces. As a result, the rolling can be stably performed.

[Brief description of drawings]

FIG. 1 is a schematic view showing a filter cigarette manufacturing machine together with a filter cigarette manufacturing process.

FIG. 2 is an enlarged view of a rolling section in FIG.

FIG. 3 is a view showing an upper surface of the rolling plate of FIG.

FIG. 4 is a view for explaining the action of the rolling section of FIG.

FIG. 5 is a cross-sectional view of a rolling plate.

FIG. 6 is a graph showing the effectiveness of a rolling plate.

FIG. 7 is a view showing another embodiment of the rolling plate.

FIG. 8 is a view showing another embodiment of the rolling section.

[Explanation of symbols]

 4 Drum Rows (Conveying Means) 6 Rolling Sections 34 Drum Rows 38 Coke Drums (Supply Means) 40 Outlet Drums 42 Inlet Drums 44 Bladed Drums (Supply Means) 48 Rolling Plates 50 Holders 54 Recesses 56 Fingers 57 Grip Surfaces 58 Protrusions 60 Rolling plate 62 Recessed portion 64 Grip surface (rolling surface)

Claims (5)

[Claims] 1. A supply means for supplying a chip paper piece along a predetermined supply path, a rolling plate arranged along the supply path and forming a rolling passage between the supply path and the rolling path, A moving means for conveying an intermediate product of a double filter cigarette having a filter plug positioned between two cigarettes, and the intermediate product is moved in the rolling passage in the feeding direction of the tip paper piece. A filter mounting device for forming a double filter cigarette by winding the tip paper piece from the supply path around the intermediate product while moving the same, and reducing contact between the cigarette of the intermediate product and the rolling passage. A filter mounting device comprising: 2. The filter mounting device according to claim 1, wherein the reducing means includes a step provided on at least one of the supply path and the rolling plate. 3. The step includes a pair of recesses formed in the rolling plate and spaced apart from each other in the passage direction of the rolling passage, the recesses extending in the passage direction of the rolling passage. The filter mounting device according to claim 2, wherein: 4. The pair of left and right recesses extends in the passage direction except for an inlet portion of the rolling passage in which the intermediate product first makes one rotation. Filter mounting device. 5. The filter according to claim 3, wherein the rolling plate further has a pair of left and right rolling surface portions for rollingly supporting the respective cigarettes of the intermediate product outside the pair of left and right recesses. Mounting device.