Shredding device for paper web used in the manufacture of cigarettes with filters.

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

The present invention relates to a chip paper cutting device incorporated in a filter attachment in a filtered cigarette manufacturing system.

【0002】

[Conventional technology]

A filter attachment is a device that wraps a tip paper piece around a cigarette and a filter to produce a cigarette with a filter, and therefore a filter attachment is a tip from a long tip paper to obtain a tip paper piece. A cutting device that cuts and forms a piece of paper is incorporated.

【0003】

As one of this kind of cutting device, for example, a non-contact type cutting device disclosed in Japanese Patent Publication No. 61-54559 is known, and this known cutting device is a drum with a blade in the vicinity of a receiving drum. A pair of free rollers are provided on both sides, and these free rollers are transferred to the receiving drum, whereby each cutting blade of the drum with a blade and the outer peripheral surface of the receiving drum are kept in a non-contact state with a gap at all times. Maintained. Therefore, even if these drums are rotationally driven in opposite directions and the chip paper is supplied and the chip paper is cut by the cutting blade, each cutting blade of the bladed drum collides with the receiving drum. There is no such thing. As a result, there are advantages that not only the cutting noise due to collision can be significantly reduced at the time of cutting, but also the wear of the receiving drum and the cutting blade can be reduced.

【0004】

[Problems to be Solved by the Invention]

By the way, in the above-mentioned non-contact type cutting device, the cutting performance of the chip paper is greatly influenced by the size of the above-mentioned gap, that is, the gap defined between the outer peripheral surface of the receiving drum and the cutting blade. In order to secure the desired cutting performance, it is necessary to position the relative position between the receiving drum and the bladed drum with high accuracy. Therefore, the drum shaft of the drum with a blade is pressed against the receiving drum side by the pressing screw, and the pair of free rollers are pressed and urged against the drum with a constant force.

【0005】

However, in recent years, as the speed of the filter attachment described above has increased, the receiving drum, the drum with a blade, and the free roller have tended to become larger and larger, and when these drums and rollers become larger, the assembly accuracy is improved. It becomes very difficult to maintain. For this reason, for example, when the rotation of the receiving drum fluctuates, the gap expands and cutting of the chip paper becomes impossible, and conversely, when the gap shrinks, the gap itself is inherently minute. Therefore, there is a risk that the cutting blade of the drum with a blade collides with the receiving drum.

【0006】

Further, the above-mentioned fluctuation of the gap forcibly deforms the bearings supporting the drum shafts of each drum, and there is a problem that these bearings are liable to be overheated and deteriorated. The present invention has been made based on the above-mentioned circumstances, and the purpose of the present invention is to maintain the gap between the receiving drum and the cutting blade on the bladed drum side with a simple structure and with high accuracy, and chip paper. It is an object of the present invention to provide a chip paper cutting device capable of ensuring the cutting performance of the above for a long period of time, reducing damage and wear of each part, and extending the life thereof.

【0007】

[Means for solving problems]

In the present invention, in order to obtain a cigarette with a filter for two pieces by wrapping a piece of chip paper around an aggregate in which a filter plug is arranged between two cigarettes, the chip paper coated with glue on one side is cut. This is a chip paper cutting device that forms the chip paper piece and then supplies the chip paper piece toward the aggregate, and is rotated in one direction. A receiving drum to be transferred along the surface and a plurality of cutting blades arranged in the vicinity of the receiving drum and having a plurality of cutting blades on the outer peripheral surface thereof at equal intervals in the circumferential direction, and are rotated in the opposite direction to the receiving drum. A drum with a blade and both ends of the drum shaft of the drum with a blade are rotatably provided and are in contact with the outer peripheral surfaces of the receiving drum. During the rotation of both drums, the outer peripheral surface of the receiving drum and the cutting blade A pair of free rollers that secure a predetermined gap between the cutting edge and the cutting edge of the drum are provided, and as the drums rotate, the chip paper on the outer peripheral surface of the receiving drum is cut in contact with the receiving drum. In a cutting device that periodically cuts with a blade to form the chip paper pieces that can be individually separated, the cutting device rotatably supports both ends of the drum shaft of the drum with a blade and with respect to the receiving drum. A pair of swinging arms that enable the drum with a blade and a pair of free rollers to be brought into contact with each other, and an urging means that receives the swinging arms and urges them to rotate toward the drum and presses each of the free rollers against the drum. And further (claim 1). Preferably, the cutting device is further provided with an eccentric ring that is disposed between each free roller and the drum shaft, respectively, and that varies the distance between the rolling contact of the free roller and the drum shaft with respect to the receiving drum. (Claim 2).

【0008】

[Action]

According to the cutting device described above, since the pair of swinging arms are rotationally urged toward the receiving drum by the urging means, the pair of the receiving drum and the bladed drum side are paired during the rotation of the receiving drum and the bladed drum. The free roller is not only in a state of being constantly pressed by the receiving drum with a predetermined force, but also in a state of being able to swing via a pair of swing arms. In such a state, when the chip paper passes between the drum with a blade and the receiving drum, the chip paper is cut into individual chip paper pieces by a cutting blade that is not in contact with the receiving drum. After this, the chip paper pieces are supplied from the receiving drum to the assembly, and two cigarettes with filters are manufactured. The receiving drum becomes larger, and a runout occurs in the rotation of the receiving drum, and this runout is absorbed by the pair of swinging arms rotating against the rotational bias, and the cutting blade and the receiving drum A predetermined gap is secured between them. On the other hand, the eccentric ring provided between each free roller and the drum shaft on the side of the drum with a blade has a variable mounting rotation angle, so that the gap between the cutting blade and the receiving drum is readjusted.

【0009】

[Example]

With reference to FIG. 1, filter attachments for manufacturing filtered cigarettes are schematically shown. This filter attachment is provided with a base frame 1, and a drum row 2 is arranged on the right side portion of the base frame 1. This drum row 2 extends from the right side to the left side in FIG. 1, and its left end is connected to 3 at the winding portion of the chip paper piece. The drum row 2 is composed of a large number of drums, and a large number of grooves are provided at equal intervals on the outer peripheral surface of each drum. The grooved drum located at the right end of the drum row 2 is supplied with tobacco rods for two cigarettes manufactured by a hoist (not shown).

【0010】

The tobacco rod supplied to the drum row 2 is sequentially transferred to the groove of the grooved drum located on the left side by the rotation of each grooved drum of the drum row 2, and is conveyed toward the winding portion 3. .. Here, the grooved drum in the middle of the drum row 2 is provided with a rotary knife 4, and the rotary knife 4 uses the rotation of the grooved drum to turn the conveyed tobacco rod into individual cigarettes. Disconnect. Further, after that, a predetermined interval is secured between the two cigarettes obtained by cutting in the process of being conveyed toward the winding portion 3 described above.

【0011】

With reference to FIG. 2, the process flow from forming individual cigarettes from the tobacco rods to forming a predetermined interval between these cigarettes is shown in the A1 region in FIG. In Fig. 2, TR and TS show tobacco rods and cigarettes, respectively. On the other hand, as shown in FIG. 1, a hopper 5 is arranged above the drum row 2, and the hopper 5 accommodates a large number of filter rods (not shown). The hopper 5 and the drum row 2 are connected by a drum row 6 similar to the drum row 2, and the drum row 6 takes out the filter rods in the hopper 5 one by one and defines the individual filter rods. After cutting into equal length filter plugs, these filter plugs can be supplied between the cigarettes on the drum row 2. Specifically, the grooved drum of the drum row 6 directly under the hopper 5 is provided with, for example, two rotary knives 7, and these rotary knives 7 are conveyed by the filter rod as the grooved drum rotates. When it is done, cut the filter rod into 3 equal parts.

【0012】

Further, one grooved drum located downstream of the grooved drum provided with the rotary knife 7 is configured as a so-called grading drum. This grading drum has a function of sequentially aligning three filter plugs obtained from one filter rod in the transport direction, so that one filter plug can be sequentially arranged from the downstream end of the drum row 6. It will be supplied to drum row 2. Here, the filter plug supplied to the drum row 2 is arranged at a portion of the space already secured between the two cigarettes, and after that, the filter plug is placed on the winding portion 3 together with the two cigarettes. It is transported toward.

【0013】

Region A2 in FIG. 2 shows the process flow from obtaining individual filter plugs from fill rods and placing one filter plug between two cigarette TSs. In FIG. 2, FR and FP indicate the filter rod and the filter plug, respectively, and the filter plug FP has the length of two filter chips to be attached to the cigarette TS.

【0014】

The two cigarette TSs with the filter plug FP placed in the center on the drum row 2 are moved toward the filter plug FP on the grooved drum at the end of the drum row to filter. It is in close contact with both ends of the plug FP, and this process is shown in the A3 region in Figure 2. Therefore, one filter plug FP is located between the two cigarette TSs and is supplied from the drum row 2 to the winding portion 3.

【0015】

On the other hand, a glued chip paper piece is also supplied to the winding portion 3, and the supply device is arranged from the upper left end of the base frame 1 to the winding portion 3 in FIG. Has been done. First, to explain from the upstream side of the supply device, a pair of rolls 7 and 8 are provided upstream, and these rolls 7 and 8 are wound with a long chip paper P. The width of the chip paper P is set sufficiently longer than the length of the filter plug FP.

【0016】

In the state shown in FIG. 1, the chip paper P is unwound from the roll 7, and the unwound chip paper P is guided toward the winding portion 3 while being guided by a large number of guide rollers 9 that define the supply path. It has been done. In the middle of the supply path, the accumulating portion 10 of the chip paper P is arranged on the rolls 7 and 8 side, and this accumulating portion 10 is located on the winding portion 3 side when the operation of the filter attachment is stopped. Chip paper P, that is, the difference between the supply speed of the chip paper piece and the feeding speed of the chip paper P on the roll side can be absorbed, and the chip paper P is temporarily set in advance when the chip paper P is connected. It is provided to store the target.

【0017】

Here, to explain the connection of the chip paper P, the connection unit 11 is located on the upstream side of the storage unit 10, and the tip of the chip paper P unwound from the other roll 8 is arranged in the connection unit 11. Is derived in advance. Therefore, if a certain amount of chip paper P is stored in the storage unit 10, when the chip paper P of one roll 7 is exhausted and the end reaches the connection part 11, the supply on the terminal side is stopped. Then, the tip of the chip paper P unwound from the other roll 8 can be connected to this end, and the supply of the chip paper P can be continued from the storage unit 10 even at the time of this connection.

【0018】

In the supply path of the chip paper P, a gluing device 12 is arranged on the winding portion 3 side, and the gluing device 12 rotates while a part of the gluing device 12 is immersed in the glue in a glue container (not shown). On the one hand, it is transferred to the glue supply roller 13, and on the other hand, it is composed of the glue transfer roller 14 which is transferred to one surface of the chip paper P. Therefore, the glue adhering to the glue transfer roller 13 from the glue container is transferred to the glue transfer roller 14 to a predetermined thickness because the glue supply roller 13 and the glue transfer roller 14 are in contact with each other. , It will be transferred from this glue transfer roller 14 to one surface of the chip paper P. The gluing device 12 may be the one described in Japanese Patent Publication No. 63-43077.

【0019】

Further, preheaters 15 and post heaters 16 are arranged immediately upstream and downstream of the gluing device 12, respectively, and these preheaters 15 and post heaters 16 are located on the surface of a guide plate that defines a transport surface of the chip paper P. It is constructed by attaching a heat generating sheet. Therefore, as is clear from FIG. 1, the preheater 15 heats the surface of the chip paper P to be glued, whereas the post heater 16 heats the surface of the chip paper P opposite to the glued surface. It has become. Further, in the case of this embodiment, the post heater 16 is combined with the hot air heater 17, and the hot air heater 17 blows warm air onto the glued surface of the chip paper P, whereby the glued surface is blown. It can be effectively pre-dried.

【0020】

A cutting device 18 is arranged at the end of the supply path of the chip paper P, and the cutting device 18 can cut the glued chip paper P into chip paper pieces having a predetermined length. It has become. That is, the cutting device 18 is mainly composed of a cork drum 19 as a receiving drum whose outer peripheral surface is formed as a suction surface by negative pressure, and a drum unit 20 with a blade located in the vicinity of the cork drum 19. These can be rotationally driven in opposite directions at the same peripheral speed. Therefore, when the glued tip paper P reaches the cork drum 19, the surface of the chip paper P opposite to the glued surface is attracted to the suction surface of the cork drum 19, and is wound with the rotation of the cork drum 19. It is supplied toward the attachment part 3. On the other hand, although not shown in FIG. 1, cutting blades are provided on the outer peripheral surface of the bladed drum unit 20 at equal intervals in the circumferential direction, and therefore, they are conveyed on the suction surface of the cork drum 19. The chip paper P is cut by each cutting blade of the bladed drum unit 20 to become a chip paper piece, and then the chip paper piece is supplied toward the winding portion 3 as the cork drum 19 rotates. The bladed drum unit 20 will be described later.

【0021】

Here, the winding portion 3 is arranged so as to be connected to the grooved drum located at the end of the drum row 2 described above, and the two cigarette TSs supplied from the drum row 2 and the filter located at the center thereof. It has a function of receiving the plug FP and supplying them to the drum row 21 extending from the winding portion 3 to the left in FIG. 1 while rolling them with the cork drum 19.

【0022】

Therefore, when two cigarette TSs and a filter plug FP are supplied to the winding portion 3 and at the same time, a chip paper piece is supplied from the cork drum 19 so as to straddle the two cigarette TSs, the chip paper is supplied. One piece is glued to the filter plug FP and the ends of two cigarettes located on the side of the filter plug FP, and when these cigarettes and the filter plug roll as described above, a piece of chip paper to them. Wrapped around, the two cigarettes and the filter plugs are interconnected, resulting in two consecutive filtered cigarettes.

【0023】

When the chip paper piece is adhered to the cigarette and the filter plug, the suction force on the cork drum 19 side is released. Further, in FIG. 2, the A4 region shows the flow of processing from the supply of the chip paper piece to the winding portion 3 to the winding of this chip paper piece, and the PC shows the chip paper piece, and The glued surface of this chip paper piece PC is shown with diagonal lines.

【0024】

After this, two consecutive filtered cigarettes are centered on the filter plug by the rotating knife 22 provided on one grooved drum in the process of being conveyed on each grooved drum of the drum row 21. It is cut into individual filtered cigarettes, and the filtered cigarettes are aligned in their orientation and transferred to a transport conveyor, which feeds them to a subsequent packaging machine. The flow of such processing is shown in the A5 region in FIG. In FIG. 2, FC shows a filter chip obtained by cutting the filter plug FP.

【0025】

Next, with reference to FIGS. 3 to 5, the above-mentioned cutting device 18 is illustrated in detail, and the configuration of the cutting device 18 will be described in detail below. First, referring to FIG. 3, one end of the drum shaft 23 of the cork drum 19 is rotatably supported by the base frame 1, and the other end is rotated to the lower end of the support plate 24. It is supported freely. Although not shown, one end of the drum shaft 23 is connected to a drive mechanism (not shown), and the drive mechanism enables the cork drum 19 to be rotationally driven in a predetermined direction.

【0026】

As shown in FIG. 3, the support plate 24 has a substantially L-shape as if it was rotated clockwise by about 90 degrees, and extends parallel to the base frame 1, and its upper end thereof is via the support block 25. It is fixed to the base frame 1. That is, the support block 25 is composed of a plate portion 26 along the base frame 1 and a spacer portion 27 protruding from the plate portion 26, as is clear from FIG. 4, and the upper end portion of the support plate 24 is a spacer. It is connected to the protruding end of the portion 27 via a plurality of connecting bolts 28. On the other hand, the plate portion 26 of the support block 25 is connected to the base frame 1 via a plurality of connecting bolts 29, but as is clear from FIG. 3, one end of the plate portion 26 is the support plate 24. It extends so as to face the central part of.

【0027】

A swing shaft 30 is bridged between the central portion of the support plate 24 and the plate portion 26 of the support block 25 in parallel with the drum shaft 23 of the cork drum 19, and the swing shaft 30 Both ends are supported by the support plate 24 and the plate portion 26, respectively. The upper ends of the pair of swing arms 31 and 32 are rotatably supported on the swing shaft 30 via a slide bearing 33 as shown in FIG. Further, in the swing shaft 30, a spacer sleeve 34 is attached between the upper ends of the swing arms 31 and 32, and a spacer ring 35 is also attached between the upper ends of the swing arm 31 and the support plate 24. Has been done. Therefore, the swing arms 31 and 32 are attached to the swing shaft 30 in a state of being positioned in the axial direction of the swing shaft 30.

【0028】

A drum shaft 36 is rotatably supported at the lower ends of the swing arms 31 and 32 via a bearing 37. The drum shaft 36 extends in parallel with the drum shaft 23 of the cork drum 19 described above, and both ends thereof are formed as small diameter portions having a reduced diameter and penetrate the corresponding swing arms 31 and 32. One end of the drum shaft 36 located on the base frame 1 side is connected to the input shaft 39 via an old dam joint 38 attached to the base frame 1, and an input gear 40 is attached to the input shaft 39. ing. A rotational driving force is transmitted to the input gear 40 via a gear train (not shown), whereby the drum shaft 36 is rotationally driven together with the input gear 40. Further, the Oldham joint 38 is provided to absorb the deviation between the axes of the input shaft 39 and the drum shaft 36 even if the swing arms 31 and 32 swing.

【0029】

A pair of free rollers 42 are rotatably attached to the small diameter portion of the drum shaft 36 via bearings 41, and these free rollers 42 are positioned inside the swing arms 31 and 32. Each free roller 42 has holder rings attached to both sides of the main body made of cemented carbide, and these holder rings are connected to the main body via screws penetrating the main body, and each holder ring is also It is also supported on the drum shaft 36 side via a bearing.

【0030】

The central portion of the drum shaft 36 located between the free rollers 42 is formed as a large-diameter portion, and a drum 43 with a blade is attached to this large-diameter portion. The bladed drum 36 is configured by providing a plurality of cutting blades 44 on the outer peripheral surface of a main body made of a cemented carbide similar to the free roller 42. These cutting blades 44 are arranged at equal intervals in the circumferential direction of the drum 43 with a blade, and the cutting edges extend in the axial direction of the drum shaft 36. Further, although the cutting edge of each cutting blade 44 is not shown, its cross section has a trapezoidal shape, and this shape is suitable for cutting the chip paper P without contacting the cork drum 19. It has become.

【0031】

The spacer portion 27 of the support block 25 described above is provided with a pair of urging mechanisms for pressing the swing arms 31, 32, that is, the pair of free rollers 42 against the outer peripheral surface of the cork drum 19. Since each urging mechanism has the same configuration, only one urging mechanism will be described below. The spacer portion 27 has a bottomed spring mounting hole 58 on a surface facing the bladed drum 43, and a pressing slider 45 is slidably fitted in the spring mounting hole 58. A screw shaft 46 extends coaxially from one end surface of the pressing slider 45, and the screw shaft 46 is screwed into the bottom of the spring mounting hole 58 and protrudes to the outside of the spacer portion 27. A nut 47 is attached to the protruding portion of the screw shaft 46, and the nut 47 positions the screw shaft 46, that is, the pressing slider 45 in the axial direction.

【0032】

On the other hand, a guide shaft 48 projects from the other end surface of the pressing slider 45, and the tip of the guide shaft 48 is slidably fitted to the shaft portion 50 of the pusher 49. A pressing spring 52 composed of a compression coil spring is mounted between the flange 51 of the pusher 49 and the pressing slider 45 so as to surround the guide shaft 48 and the shaft portion 50, and the pressing spring 52 is a corresponding swing arm. The pusher 49 is pressed against the 31 with a predetermined pressing force. This pressing force can be adjusted by loosening the nut 47 and variably adjusting the axial position of the screw shaft 46.

【0033】

Although only a part of the other urging mechanism is shown in FIG. 4, this urging mechanism urges the corresponding swing arm 32 with a predetermined pressing force by the pusher 49. When the swing arms 31 and 32 are pressed by the pusher 49 of each urging mechanism as described above, these swing arms 31 and 32 are rotationally urged toward the cork drum 19. As a result, the pair of free rollers 42 described above are transferred to the outer peripheral surface of the cork drum 19 with a predetermined pressing force.

【0034】

Here, the pair of free rollers 42 has an outer diameter slightly larger than the outer diameter of the rotation locus drawn by the cutting edge of the cutting blade 44 in the bladed drum 43, and therefore the pair of free rollers 42 and the cork. Even if the cork drum 19 and the bladed drum 43 are rotated in opposite directions with the drum 19 and the drum 19 being transferred to each other, each cutting blade 44 does not come into contact with the peripheral surface of the cork drum 19. A small gap (not shown) sufficiently smaller than the thickness of the chip paper P is secured between the cutting edge of the cutting blade 44 and the outer peripheral surface of the cork drum 19 during the rotation of the cutting blade 44.

【0035】

Therefore, according to the cutting device described above, when the chip paper P is supplied so as to pass between the cork drum 19 and the bladed drum 43 during the rotation of the cork drum 19 and the bladed drum 43, the chip is supplied. The paper P is cut into chip paper pieces of a predetermined length by the wedge effect of the cutting edge 44 of each cutting blade 44 of the drum 43 with a blade, and the cut chip paper pieces are subsequently wound as described above. Supplied towards.

【0036】

During cutting of the chip paper P, each cutting blade 44 of the bladed drum 43 is rotated with the above-mentioned gap between it and the outer peripheral surface of the cork drum 19, so that the cutting blade 44 comes into contact with the cork drum 19. Therefore, noise and wear of the cutting blade 44 due to cutting can be greatly reduced. Further, as described above, the pair of swing arms 31 and 32 are constantly rotated and urged toward the cork drum 19 side by the pressing spring 52 of each urging mechanism, so that the tip paper P is cut. In the middle, even if the rotation of the cork drum 19 fluctuates, the pair of free rollers 42 do not separate from the outer peripheral surface of the cork drum 19. That is, even if rotational runout occurs in the cork drum 19, the swing arms 31 and 32 swing in accordance with the rotary runout, so that the pair of free rollers 42 surely roll to the outer peripheral surface of the cork drum 19. It stays in contact. Therefore, the gap between the cutting blade 44 of the free roller 42 and the co-axis bladed drum 43 and the outer peripheral surface of the cork drum 19 is also always maintained constant, and the cutting of the tip paper P is reliable and stable. It becomes possible to carry out. That is, since the gap can be surely secured, the cutting blade 44 of the bladed drum 43 does not collide with the cork drum 19, and the cutting edge of these cutting blades 44 is not damaged.

【0037】

Further, if the swing arms 31 and 32 are swingable as described above, an excessive force is not applied to the bearings of the cork drum 19 and the free roller 42, and these bearings are not deformed. , The overheat deterioration can be prevented. The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, with reference to FIG. 6, a modified example of the cutting device is shown. The cutting device of this modification has substantially the same structure as the cutting device of one embodiment, and therefore, here, the same reference is made to a member or part having the same function as that of one embodiment. Reference numerals will be given to omit the description thereof, and only the differences will be described below.

【0038】

In the cutting device of the modified example, the urging mechanism uses an air cylinder 53 instead of the pressing spring 52, and the pusher 49 is attached to the tip of the piston rod 54 of the air cylinder 53. In the case of this modification, the pusher 49 is in contact with the corresponding swing arm 31 via the receiver 55. Even if an air cylinder 53 is used instead of the pressing spring 52 in this way, the swing arms 31 and 32 can be rotationally urged toward the cork drum 19 side in the same manner. Also has the same advantages as the cutting device of one embodiment.

【0039】

Further, with reference to FIG. 7, yet another modification is shown. In this modification, the bearing 41 of each free roller 42 is not directly mounted on the small diameter portion of the drum shaft 36, but is mounted via the eccentric holder 56. The eccentric holder 56 is composed of a ring member in which the mounting surface 57 of the bearing 41 is eccentric with respect to the drum shaft 36, and an annular gap is secured between the eccentric holder 56 and the drum shaft 36. This gap prevents the eccentric holder 56 from being dragged and rotated by this rotation even if the drum shaft 36 is rotated.

【0040】

And although not shown, the eccentric holder 56 is mounted on the swing arms 31 and 32 with a variable mounting rotation angle with respect to the drum shaft 36, so that each free roller 42 is mounted on the eccentric holder 56 and the bearing 41. It is rotatably supported by the swing arms 31 and 32 via. In FIG. 6, the swing arm 31 is provided with four mounting bolts 60, and the eccentric holder 56 is attached to the swing arm 31 by these mounting bolts 60. Further, each mounting bolt 60 is screwed into the eccentric holder 56 through the arc-shaped elongated hole 61 formed in the swing arm 31, and the mounting rotation angle of the eccentric holder 56 is caused by these elongated holes 61. Is variable.

【0041】

When the mounting rotation angle of the eccentric holder 56 is changed, the distance between the rolling contact between the cork drum 19 and the free roller 42 and the axis of the drum shaft 36 changes, which is caused by the wear of the free roller 42. Then, even if the above-mentioned gap becomes small, it can be readjusted to a desired gap simply by adjusting the mounting rotation angle of the eccentric holder 56 with respect to the drum shaft 36. Further, even when each cutting blade 44 of the bladed drum 43 is ground to widen the gap, the mounting rotation angle of the eccentric holder 56 can be adjusted to maintain the gap constant.

【0042】

[Effect of the invention]

As described above, according to the cutting device of the present invention, the drum shaft of the drum with a blade is rotatably supported by a pair of swinging arms, and these swinging arms are directed toward the receiving drum side by the urging means. The pair of free rollers on the drum shaft are kept in a state of being constantly transferred to the receiving drum with a predetermined pressing force because the drum shaft is rotated and urged. Therefore, even if the rotational vibration of the receiving drum occurs during the cutting of the chip paper, the free roller can follow the rotational vibration of the receiving drum via the swing arm, so that the cutting blade of the drum with a blade The gap between the receiving drum and the receiving drum can be reliably maintained. As a result, stable cutting of the chip paper, that is, individual separation of the cut chip paper pieces is ensured, and the chip paper pieces are stably supplied from the receiving drum to form two filtered cigarettes. Will be done. The cutting blade is not damaged by colliding with the receiving drum, and the bearings of each drum are not deformed by an excessive force, so that the life of the cutting device can be extended. It can be planned. Furthermore, if an eccentric ring is interposed between each free roller and the drum shaft, the gap between the cutting blade and the receiving drum can be readjusted simply by changing the mounting rotation angle of the eccentric ring. Has an excellent effect.

[Simple explanation of drawings]

[Figure 1]

It is a schematic front view of a filter attachment.

[Figure 2]

It is a figure which showed the flow of the processing of a cigarette and a filter rod in a filter attachment.

[Fig. 3]

It is a front view which showed the cutting device of the chip paper incorporated in the filter attachment partially broken.

[Fig. 4]

It is a top view which showed by partially breaking the cutting apparatus of FIG.

[Fig. 5]

In FIG. 3, it is a cross-sectional view of a cutting device along the VV line.

[Fig. 6]

It is a front view which showed the cutting apparatus of the modification.

[Fig. 7]

It is sectional drawing which shows yet another modification in which an eccentric holder is interposed between a bearing of a free roller and a drum shaft.

[Explanation of symbols]

1 base frame 19 Cork drum (receiver drum) 31,32 Swing arm 36 Drum shaft 41 Bearing 42 Free Roller 43 Drum with blade 44 Cutting blade 45 Press slider 49 Pusher 52 Pressing spring 53 air cylinder 56 Eccentric holder