KR100289449B1 - Filter mounting apparatus - Google Patents

Abstract

The filter mounting device includes a receiving drum forming chip chips and a rolling plate that works together with the outer circumferential surface of the receiving drum to define a rolling path, and the rolling plate has a pair of left and right recesses 54 on its upper surface. These recesses 54 reduce the contact resistance between the intermediate product rolling in the rolling passage, that is, the cigarette and the rolling surface.

Description

Filter Mounting Equipment {FILTER MOUNTING APPARATUS}

As is well known, a double filter cigarette first forms an intermediate product in which filter plugs are disposed between two cigarettes, and then wraps a piece of chip paper on the intermediate product and connects the two cigarettes and the filter plug to each other. It is obtained by. The double filter cigarette is then cut at its center, i.e., the filter plug, to form individual filter cigarettes.

The above-mentioned double filter cigarette is formed by a filter mounting apparatus, and this kind of filter mounting apparatus is disclosed in, for example, Japanese Patent Laid-Open No. 63-196257 or Japanese Patent Laid-Open No. 4-211355. The filter mounting device is provided with a supply drum of chip paper pieces and a rolling plate, and these supply drums and rolling plates work together to define a rolling passage for the intermediate product described above. More specifically, the rolling passage is defined between the outer peripheral surface of the supply drum and the upper surface of the rolling plate, that is, the rolling surface. As the intermediate product is delivered into the rolling passage, chip paper pieces are supplied to the outer circumferential surface of the intermediate product, and paste is applied to one side of the chip paper pieces. As a result, the chip paper pieces are bonded to the intermediate product and are wound on the intermediate product passing while rolling in the rolling passage. As a result, the above-described double filter cigarette is obtained. After winding the chip paper pieces, both ends of the chip paper pieces form wrap portions that overlap each other.

In recent years, in order to improve the productivity of filter cigarettes, the conveyance speed of intermediate products tends to become higher and higher. In order to stably wind the intermediate product onto the chip paper, that is, to secure the state in which the intermediate product is sufficiently bonded by chip paper chips, the intermediate product is I have to roll it several times.

Here, the intermediate product passing through the rolling passage is in a state sandwiched between the supply drum of the chip paper chips and the rolling plate. For this reason, as the number of times an intermediate product rolls increases, each cigarette in the intermediate product is rubbed and unwound, and the rigidity of the cigarette decreases.

Thereafter, the molded double filter cigarettes are sent out from the rolling passages, and again in the downstream conveying path, the lack of hardness of the cigarettes is caused by the tobacco smoke from both ends of the double filter cigarettes and one end of the individual filter cigarettes. It causes a dropout, which causes a so-called poor taste of tobacco.

The present invention relates to a filter mounting apparatus for forming a double filter cigarette corresponding to two filter cigarettes by connecting two cigarettes and a filter plug to each other.

1 is a schematic view showing a manufacturing machine of a filter cigarette together with the manufacturing procedure thereof,

2 is an enlarged view showing a rolling section of the manufacturing apparatus of FIG. 1;

3 is a plan view of the rolling plate of FIG.

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

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

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

7 is a view showing another embodiment of a rolling plate,

8 is a view showing another embodiment of a rolling section;

SUMMARY OF THE INVENTION An object of the present invention is to provide a filter mounting apparatus which makes it possible to prevent poor tobacco sag without deteriorating the hardness of cigarette parts.

The above object is achieved by the filter mounting apparatus of the present invention, which reduces the contact resistance of the rolling passage to the cigarette of the intermediate product when the above-described intermediate product is moved while rolling in the rolling passage. Equipped with means. The abatement means includes a pair of recesses formed on one of the outer circumferential surface and the rolling surface of the supply drum, and these recesses have a distance corresponding to the width of the chip paper slices in the rolling passage in the direction of movement of the intermediate product. It is separated and extends along the rolling passages.

The pair of recesses described above reduces the contact area of the outer circumferential surface or the rolling surface of the supply drum with respect to the cigarette of the intermediate product when the intermediate product passes through the rolling passage. As a result, the cigarettes are rubbed off from the intermediate product in the rolling passage, thereby reducing the loosening, and the double filter cigarettes can be molded while the cigarettes are maintained in hardness. Therefore, when the double filter cigarette is sent out from the rolling passage and conveyed to the conveying path downstream from the rolling passage, it is possible to prevent the tobacco tobacco from falling off at both ends of the double filter cigarette. As a result, the productivity of the filter cigarette is improved.

It is sufficient that a pair of recesses are formed on the rolling surface of the rolling plate, and these recesses extend along the rolling passage except for the inlet portion of the rolling passage, and each recess is opened sideways at the side border corresponding to the rolling surface. . In this case, since the intermediate product immediately after delivery in the rolling passage is supported on the rolling surface over its entire length, the intermediate product is rolled stably, thereby rolling the chip paper pieces to the intermediate product, that is, forming the double filter cigarette. It is certainly done. Therefore, the entrance part of the rolling passage should have the length necessary for the first roll of intermediate products in the rolling passage.

Then, when the cigarette portion of the molded double filter cigarette passes through the corresponding recess, each recess extends to the side edge corresponding to the rolling plate, so that the contact area of the rolling surface to the cigarette portion is greatly reduced.

The pair of recesses described above may extend from the inlet of the rolling passage to the outlet. In this case, it is good for a pair of recessed parts to leave both edge parts of a rolling surface. When the intermediate product and the double filter cigarette after molding are moved while rolling in the rolling passage, both ends of the intermediate product and the double filter cigarette are supported on the rolling surface together with the center part thereof, and their clouds remain stable. do. Preferably, the rolling surface has a second recessed portion each extending along the recess on both edges thereof. These second recesses prevent both ends of the intermediate product and the double filter cigarette from contacting the rolling surface.

Furthermore, the rolling surface may have a projection at the inlet of the rolling passage, which has an arc in cross section and extends in the direction crossing the rolling passage.

Such projections can be pinched at the entrance of the rolling passages, triggering a cloud of the intermediate product, ensuring the initial adhesion of the chip paper pieces to the intermediate product.

Referring to FIG. 1, the filter cigarette maker includes a main frame 2. In FIG. 1, a drum train 4 is disposed at the right side of the main frame 2. The drum train 4 is a conveying path for double cigarettes and single cigarettes, and extends to the rolling section (filter mounting device) 6.

The drum train 4 includes a drum with a plurality of grooves. Each grooved drum has a plurality of conveying grooves on its outer circumferential surface, and these conveying grooves are arranged at equal intervals in the circumferential direction of the grooved drum. The grooved drum located at the far right end of the drum train 4 as shown in FIG. 1 is an inlet drum, a so-called catcher drum 8. Each conveyance groove of the catcher drum 8 can receive the double cigarette D in turn from a cigarette maker not shown. Here, the double cigarette D has a length twice the length of the cigarette portion of the filter cigarette.

The double cigarette D received in the conveyance groove of the catcher drum 8 is transferred to the drum adjacent to the left side as shown in FIG. 1 in accordance with the rotation of each drum in the drum train 4. It is conveyed toward. One grooved drum 10 in the drum train 4 is provided with a rotary knife 12. The rotary knife 12 cuts the double cigarette D on the grooved drum 10 to the same length from its center to form two single cigarettes S. As shown in FIG. Thereafter, the two single cigarettes S are transferred from the grooved drum 10 to two adjacent grooved drums in turn, and are conveyed, and in this conveying process, the two single cigarettes are separated from each other in the axial direction. As a result, a predetermined space is secured between two single cigarettes S. A ₁ area | region of FIG. 1 has shown the manufacturing procedure until the double cigarette D is cut into two single cigarettes S, and these single cigarettes S are isolate | separated from each other.

The filter plug supply device 14 is disposed above the drum train 4. This feeder 14 is equipped with a pair of left and right hoppers 16, and these hoppers 16 stock a plurality of filter rods (not shown). The left and right hoppers 16 are connected to a drum tray 4 with the drum train 18 therebetween. More specifically, the drum train 18 includes a plurality of grooved drums like the drum train 4, and the grooved drum at the bottom of the drum train 18 is connected to the assembly drum 20 in the drum train 4. have. Assembly drum 20 is a grooved drum for receiving a single cigarette (S) separated from each other of the drum train (4).

The drum train 18 takes out one filter rod from each of the left and right hoppers 16, and conveys it toward the assembly drum 20. As shown in FIG. In this conveying process, the filter rod is formed into individual filter plugs F by cutting, grading, and sorting, and these filter plugs F are supplied to the assembly drum 20 one by one. do. In detail, the filter plug F is supplied to the space secured between the two single cigarettes S on the assembly drum 20. The filter plug F has a length twice the length of the filter portion of the filter cigarette.

In addition, when a charcoal filter rod is stored in one hopper 16 and a plain filter rod is stored in the other hopper 16, the filter plug F is a dual filter plug ( dual filter plug). On the other hand, when the plane filter rod is stocked together with the left and right hoppers 16, the assembled filter plug F becomes a plane filter plug.

Two single cigarettes (S) and one filter plug (F) assembled on the assembly drum (20) are then carried from the assembly drum (20) onto the next grooved drum, ie, the alignment drum, and are aligned on the alignment drum. Each cigarette cigarette (S) is in close contact with both ends of the filter plug (F). In other words, the intermediate product I of the double filter cigarette is obtained at this point. The intermediate product I is then fed from the alignment drum to the rolling section 6 via the outlet drum located on the leftmost side of the drum train 4. In FIG. 1, the region A ₂ shows a state in which the filter plug F is supplied between two single cigarettes S, and then the intermediate product I is formed.

On the other hand, the supply section of the chip paper P can be extended to the rolling section 6, which is provided with a pair of paper rolls 22 and 24. These paper rolls 22 and 24 are arranged in the upper left end of the main frame 2 as shown in FIG. One of the paper rolls is a roll in use, and the other paper roll 24 is a roll in standby. The chip paper P is released from the paper roll 22 in use, and the chip paper P is guided to the rolling section 6 while being guided to a plurality of guide rollers in the supply line.

In the supply line, an application device 30 for applying paste to a surface of the paper connecting device 26, the storage portion 28 of the chip paper P, and one surface of the chip paper P, which is used to replace the use roll from the upstream side. ), And a heater 32 for drying the grass-coated surface of the chip paper P to a certain degree is sequentially arranged.

In the rolling section 6, the chip paper P is cut into chip paper pieces Pc having a predetermined length, and as a result of the chip paper pieces Pc being wound on the intermediate product I, a double filter cigarette (DFS) ) Is obtained. Here, the chip paper pieces Pc are wound around a portion of the intermediate product I, which extends from the end of the single cigarette S around the filter plug F, so that the filter plug F and the two single cigarettes S are Are connected to each other. The area A _{3 in} FIG. 1 shows a state in which the chip paper pieces Pc are wound around the intermediate product I in the rolling section 6.

Thereafter, the double filter cigarette (DFS) is supplied to the drum train 34 which is continued from the rolling section 6 and conveyed on the drum train 34. Like the drum train 4, the drum train 34 also includes a plurality of grooved drums, and the double filter cigarette DFS transfers the individual grooved drums of the drum train 34 in turn. In this conveying process, the double filter cigarettes DFS are cut out from the center thereof by a rotary knife to form two filter cigarettes FS, and the two filter cigarettes FS are separated from each other in the axial direction.

After that, the individual filter cigarettes FS are inspected in relation to the above-mentioned selection, dilution, and the like, and the defective filter cigarettes FS are excluded from the drum train 34.

The conveyor 36 is connected to the end of the drum tray 34. The conveyor 36 receives the filter cigarette FS from the drum train 34. On the conveyor 36, the filter cigarette FS is supplied toward a packing machine (not shown) after the direction of the filter cigarette FS is arranged. Area A ₄ in FIG. 1 shows a state in which the double filter cigarettes FS are cut into two filter cigarettes FS on the drum train 34, and then these filter cigarettes FS are separated from each other.

Referring to FIG. 2, the rolling section 6 is provided with a receiving drum 38 that accepts the chip paper P. As shown in FIG. The receiving drum 38 is arranged between the outlet drum 40 of the drum train 4 and the inlet drum 42 of the drum train 34 described above. More specifically, the receiving drum 38 is arranged above the drums 40, 42 to connect these drums 40, 42.

The outer circumferential surface of the receiving drum 38 has a width slightly wider than the length of the intermediate product I described above. In the axial direction of the receiving drum 38, the central portion of the outer circumferential surface of the receiving drum 38 is formed as a suction surface over its entire circumference. Therefore, the chip paper P guided along the supply line is adsorbed to the suction surface of the receiving drum 38 with its paste application surface facing outward. Thereafter, as the receiving drum 38 is rotated clockwise as shown in FIG. 2, the chip paper P is supplied in the rotational direction of the receiving drum 38. Here, the suction surface of the receiving drum 38 can receive the supply of suction only when it is within the rotation angle region θ in the rotation direction of the receiving drum 38. As is apparent from FIG. 2, the rotation angle region θ starts at the top of the receiving drum 38 and ends at a position where the outer circumference of the receiving drum 38 is close to the outer circumference of the outlet drum 40.

If the conveying speed of the intermediate product I on the drum train 4 is V ₁ , the moving speed of the outer peripheral surface of the receiving drum 38, that is, the circumferential speed V ₂ of the receiving drum 38, It is set at twice the conveying speed V ₁ .

The blade attachment drum 44 is rotatably disposed outside the receiving drum 38 corresponding to the suction region θ of the chip paper P. The blade mounting drum 44 has a plurality of blades 46 on its outer circumferential surface, and these blades 46 are arranged at equal intervals in the circumferential direction of the blade mounting drum 44. The blade attachment drum 44 is rotated in a direction opposite to the rotation direction of the receiving drum 38. Thus, as the receiving drum 38 rotates, if the chip paper P on the receiving drum 38 passes through the blade attaching drum 44, the chip paper P is the blade 46 of the blade attaching drum 44. Is cut at every predetermined length, and the individual chip paper pieces Pc are formed on the suction surface of the receiving drum 38 as a result. Thereafter, these chip paper pieces Pc are transferred to the end of the suction region described above. Here, the suction surface of the receiving drum 38 defines the supply path of the chip paper pieces Pc.

A rolling plate 48 is disposed below the receiving drum 38, and the rolling plate 48 is supported by the holder 50. The upper surface of the rolling plate 48 is formed of an arc-shaped rolling surface 49 extending along the outer circumferential surface of the coke drum 38. The length of the rolling surface 49 along the circumferential direction of the receiving drum 38 is three times the total circumferential length with respect to the double filter cigarette DFS, ie the intermediate product I. The intermediate product I can thus rotate three times in the circumferential direction of the receiving drum 38 on the rolling surface 49. In addition, the rolling plate 48 has a width substantially equal to the length of the intermediate product I as viewed in the axial direction of the receiving drum 38. An electric heater 51 is built in the holder 50, and the heater 51 is located near the rolling plate 48. The electric heater 51 heats the rolling plate 48 to an appropriate temperature.

A rolling passage 52 is defined between the rolling plate 48 and the receiving drum 38, and the rolling passage 52 is curved to be convex downward. The height of the rolling passage 52, that is, the distance between the rolling surface 49 and the outer circumferential surface of the receiving drum 38 is slightly smaller than the diameter of the intermediate product I, and in the circumferential direction of the receiving drum 38. It is constant.

As is apparent from FIG. 3, a pair of recesses 54 are formed in the rolling surface 49. These recesses 54 are located in the downstream portion of the rolling passage 52 in view of the rotational direction of the receiving drum 38 and are spaced symmetrically. Each recess 54 has a depth of, for example, 0.5 to 1.0 mm. The portion of the rolling surface 49 left between the left and right recesses 54 has a width W slightly longer than the length of the filter plug F of the intermediate product I. Specifically, the width W is the same as the width of the chip paper (P).

Further, the arc length from the inlet of the rolling passage 52 to the pair of recesses 54, that is, the arc length of the rolling surface 49 from the upstream end of the rolling surface 49 to the recess 54 ( L ₁ ) is equal to the overall circumferential length of the intermediate product I, and the arc length L ₂ of the left and right recesses 54 is twice the total length of the intermediate product I.

A plurality of fingers 56 protrude from the upstream end of the rolling plate 48, and these fingers 56 extend along an imaginary extension surface of the rolling surface 49. Each finger 56 penetrates into the exit drum 40 without disturbing the rotation of the exit drum 40. That is, the outlet drum 40 is formed with a plurality of peripheral grooves (not shown) corresponding to the fingers 56 on the outer peripheral surface thereof. The finger 56 has a function of reliably guiding the intermediate product I conveyed on the exit drum 40 to the rolling passage 52. Meanwhile, the downstream end of the rolling plate 48 is located near the outer circumferential surface of the inlet drum 42, whereby the rolling surface 49 smoothly connects between the outer circumferential surface of the outlet drum 40 and the outer circumferential surface of the inlet drum 42. have.

Except for the left and right concave portions 54 described above, the rolling surface 49 and the upper surface of each finger 56 are formed of a grip surface 57 having a high coefficient of friction. Specifically, the grip surface 57 is obtained by knurling the upper surface of the rolling surface 49 and the finger 56. Furthermore, at the upstream end of the rolling surface 49, a small projection 58 is formed at the center thereof, and the projection 58 forms an arc of cross section, and is longer than the width W described above in the width direction of the rolling plate 48. It is extended.

The operation of the rolling section 6 described above will be described below.

As shown in FIG. 4, when the conveying speed of the intermediate product I conveyed on the outlet drum 40 of the drum train 4 is V ₁ , the intermediate product I is passed through the inlet into the rolling passage 52. , Enter the same conveying speed V _l . At the inlet of the rolling passage 52, the center portion of the intermediate product I, that is, the portion from the filter plug F to the end of the single cigarette S, passes over the projection 58 of the rolling surface 49. , Intermediate product (I) begins to roll. At the same time, the chip paper piece Pc on the receiving drum 38 enters the inlet of the rolling passage 52 at the feed rate V _2, and the tip of the chip paper piece Pc is attached to the outer peripheral surface of the intermediate product I.

At this time, since the intermediate product (I) has already started to be rolled, the moving speed of the outer periphery of the intermediate product (I) is accelerated than the conveying speed V _l , and is almost in agreement with the supply speed V ₂ of the chip paper chips Pc. . Moreover, the projection 58 reduces the gap between the rolling surface 49 and the receiving drum 38. Therefore, the tip of the chip paper scrap Pc is reliably adhered to the outer circumferential surface of the intermediate product I. As a result, the initial bonding of the chip paper scrap Pc is stably performed. The subsequent intermediate product I on the exit drum 40 has not yet reached the inlet of the rolling passage 52, so that the same chip paper Pc is applied to the preceding intermediate product I and the subsequent intermediate product I. There is no adhesion at the same time.

When the intermediate product I rides over the projection 58, the tip of the chip paper piece Pc remains sandwiched between the receiving drum 38 and the intermediate product I, and at this point, the receiving drum 38 The suction of the chip paper pieces Pc by) is in a released state. Therefore, the intermediate product I rolls in the rolling passage 52 and moves at a speed consistent with the circumferential speed V ₂ of the receiving drum 38. This cloud of intermediate product (I) is bonded to the outer peripheral surface of the intermediate product (I) while peeling the chip paper (Pc) from the outer peripheral surface of the drum 38, and finally, the chip paper (Pc) is both ends thereof. This is wound around the intermediate product (I) in the state of overlapping each other.

As described above, since the circumferential speed V ₂ of the receiving drum 38 is set to twice the conveying speed V ₁ of the intermediate product I, the chip paper pieces Pc are formed on the outer circumference of the intermediate product I. At this winding, i.e., when the intermediate product I first rolls only once in the rolling passage 52, the trailing edge of the chip paper piece Pc does not come into contact with the subsequent intermediate product I, Overtake intermediate product (I). As a result, the next intermediate product I and the next chip paper piece Pc enter into the rolling path 52 in synchronization.

The first one revolution of the intermediate product I in the rolling passage 52 is carried out in the region of L ₁ on the rolling surface 49 as described above, which covers the entire length of the intermediate product I. The grip surface 57 is provided. Accordingly, the intermediate product I is rolled without slipping on the rolling surface 49, that is, the grip surface 57, so that the chip paper pieces Pc are wound around the intermediate product I stably and reliably.

Thereafter, the intermediate product I, ie, the double filter cigarette (DFS), in which the chip paper pieces Pc are completely wound, is further rolled twice in the rolling passage 52 according to the rotation of the receiving drum 38, and the rolling passage 52 ), It is carried over the inlet drum 42 of the drum train 34 described above.

Since the rolling plate 48 is in a heated state by the electric heater 51 in the holders 50 and 50, the chip paper pieces Pc after being wound are dried quickly so that the paste coating surface is dried and the intermediate product I The adhesion to is firm.

When the double filter cigarette DFS rolls in the rolling passage 52, the rolling surface 49 is formed by only between the pair of recesses 54. Therefore, as evident in FIG. 5, the double filter cigarette DFS is only sandwiched between the rolling plate 48 and the receiving drum 38 only at the center portion thereof, that is, the portion where the chip paper pieces Pc are wound. The left and right cigarette parts are not caught between the rolling plate 48 and the receiving drum 38. As a result, the left and right cigarette parts are not rubbed off by the clouds of the double filter cigarettes (DFS), and the hardness of these cigarette parts is sufficiently maintained.

Table 1 shows the results of a sample test performed on the manufactured filter cigarette (FS). In this specimen inspection, the intermediate product (I) single cigarette before passing through the rolling passage 52 and the cigarette portion of the double filter cigarette (DFS) after passing through the rolling passage 52 were examined as hardness, That is, the strain was measured from two directions orthogonal to each other. And the test result of Table 1, the second difference between the strain Δ ₂ of the test object before passing through the first strain Δ ₁ and the rolling passage (52) of the test object after passage through the rolling passage (52) (Δ ₁ - Δ ₂ ). Here, strain represents the strain (%) of the inspection object when a predetermined load is applied to the inspection object. In addition, Table 1 also shows the same inspection results when a conventional rolling plate is used. In Table 1, the vertical direction indicates the direction of the normal to the wrapping portion of the wrapping paper in the inspection object.

As apparent from Table 1, when the above-described rolling plate 48 is used, the difference in strain between the inspection object, that is, the cigarette portion, is reduced as compared with the case of using the conventional rolling plate. This indicates that when the intermediate product I passes through the rolling section 6, the cigarette portion is rubbed off and the loosening is reduced, so that the hardness of the cigarette portion is maintained.

Therefore, in the process of conveying the double filter cigarettes (DFS) sent out from the rolling section 6 on the drum train 34, the tobacco cigarettes from both ends of the double filter cigarettes (DFS) or the respective ends of the respective filter cigarettes (FS) are eliminated. This is greatly reduced.

Referring to FIG. 6, the tobacco tobacco dropping amount from the test object before and after the rolling section 6 including the conventional rolling plate, and the test object before and after the rolling section 6 including the rolling plate 48 of the embodiment. The amount of dropouts of tobacco from the rats is shown as a comparison. When the inspection subject pays attention to the tobacco smoking dropping amount after passing through the rolling section 6, the tobacco smoking dropping amount in the Example is greatly reduced as compared with the conventional case.

Dropping of the tobacco before the inspection object passes through the rolling section 6 mainly occurs at the time of cutting the double cigarette D described above. In the related art, the tobacco tobacco dropping amount after passing the rolling section 6 is larger than the tobacco smoking dropping amount before passing the rolling section 6. On the other hand, in the case of an Example, compared with the tobacco smoking dropping amount before passing through the rolling section 6, the tobacco smoking dropping after passing the rolling section 6 is reduced significantly. This also means that the cigarette portion in the rolling section 6 is not rubbed and loosened, so that the hardness of the cigarette portion is maintained. As a result, when the rolling plate 48 of the embodiment is used, dropping of tobacco cigarettes at the tip of the filter cigarette FS, that is, the poor selection of the cigarette, is greatly reduced, and the production efficiency of the filter cigarette FS is improved.

Referring to FIG. 7, there is shown a rolling plate 60 of another embodiment. Although the rolling plate 60 has a pair of recesses 62 on its upper surface, that is, the rolling surface, these recesses 62 are described below with respect to the recesses 54 of the rolling plate 48 of FIG. It is different in the point of. The recess 54 is formed only in the portion downstream of the rolling plate 48, but the recess 62 extends from the upstream end of the rolling plate 60 to the downstream end. However, as evident in FIG. 7, the pair of recesses 62 are formed leaving both edge portions of the rolling plate 60, and these edge portions are formed of left and right pairs of grip surfaces 64. Therefore, when the intermediate product (I) and the double filter cigarette (DFS) pass through the rolling passage 52, both ends of the intermediate product (I) and the double filter cigarette (DFS) are dashed lines in FIG. It is supported by the grip surface 64 shown. The second recessed part 65 is formed in the both edges of a rolling surface, respectively, and these recessed parts 65 extend along the recessed part 62, respectively. The second recess 65 prevents both ends of the intermediate product I and the double filter cigarette DFS from contacting the rolling plate 60, so that both ends thereof are rubbed and loosened.

According to the rolling plate 60 described above, the contact area of the rolling surface with respect to the intermediate product (I) or the double filter cigarette (DFS) is reduced, and stable clouds of the intermediate product (I) and the double filter cigarette (DFS) are secured. do.

Also in the rolling plate 48, the left and right recesses 54 may extend from the upstream end of the rolling surface to the entire downstream end. In this case, the contact area of the rolling plate 48 with respect to the intermediate product I is further reduced.

In any of the above-described embodiments, in order to reduce the contact resistance of the intermediate product or the double filter cigarette (DFS) in the rolling passage 52, a pair of left and right recesses are formed on the rolling surface. However, as shown in Fig. 8, the receiving drum 38 may have small diameter portions at both ends thereof, and these small diameter portions have a diameter slightly smaller than the diameter of the suction surface. Even when the receiving drum 38 is used, the contact resistance of the intermediate product I and the double filter cigarette DFS in the rolling passage 52 is similarly reduced. In this case, it is not necessary to form a recess in the rolling plate.

Claims (7)

A supply means for supplying a piece of chip paper having a rotatable circular supply drum, the supply peripheral path being an outer peripheral surface of the supply drum; A rolling plate defining a rolling passage having an arc-shaped rolling surface extending along the outer circumferential surface of the supply drum and having an inlet and an outlet therebetween; An introduction means for introducing a rod-shaped intermediate product of a double filter cigarette having a filter plug disposed between two cigarettes from the inlet into a rolling passage, The rolling passage has a width at least equal to the length of the intermediate product, and when the intermediate product is moved while rolling from the inlet toward the outlet in the rolling passage, chip paper is wound around the intermediate product, and the double filter Cigarettes are molded, Further comprising a reducing means for reducing the contact resistance of the rolling passage to the intermediate product cigarette, The abatement means is formed on at least one of an outer circumferential surface of the supply drum and the rolling surface, and is separated from side to side with a distance corresponding to the width of the chip paper piece in the moving direction of the intermediate product, Filter mounting device comprising a pair of recesses extending along. 2. The method of claim 1, wherein the pair of recesses are formed in the rolling surface, and extend along the rolling passage except for the inlet portion of the rolling passage, and laterally at the corresponding side edges of the rolling surface. Filter mounting device, characterized in that open. 3. The filter mounting apparatus according to claim 2, wherein the inlet portion has a length required for the first roll of the intermediate product from the inlet into the rolling passage first. The filter mounting apparatus according to claim 1, wherein the pair of recesses extend from the inlet of the rolling passage to the outlet. The filter mounting apparatus according to claim 4, wherein the pair of recesses are formed leaving both edge portions of the rolling surface. 6. The filter mounting apparatus according to claim 5, wherein the rolling surface extends along the concave portion at both edges thereof and has a second concave portion. The filter mounting apparatus according to claim 1, wherein the rolling surface has a protrusion at an inlet of the rolling passage, and the protrusion has an arc cross section and extends in a direction crossing the rolling passage.