JP3800452B2 - Cigarette making machine chopped tobacco layer trimming device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for trimming a cigarette layer of a cigarette manufacturing machine that trims a chopped tobacco layer adsorbed by a suction band and continuously adjusts the thickness of the chopped tobacco layer when a tobacco rod is continuously formed.
[0002]
[Related background]
This type of engraved tobacco layer trimming apparatus includes a pair of trimming disks that are rotatably disposed below a suction band of a cigarette making machine, and a metal rotary brush that rotates in sliding contact with the lower surface of these trimming disks. ing. The pair of trimming disks and the rotary brush cooperate with each other to adjust the cut tobacco layer adsorbed on the lower surface of the suction band to a predetermined thickness. More specifically, the chopped tobacco layer is adjusted to a thickness corresponding to the spacing between the trimming disc and the suction band, and excess chopped tobacco located below the trimming disc is removed by a rotary brush.
[0003]
Here, the rotary brush is provided with a large number of scraping fins, and these scraping fins are arranged at equal intervals on the outer peripheral surface of the rotary brush. Each scraping fin has a blade at its tip, and this blade periodically contacts the lower surface of the trimming disk as the rotary brush rotates. Therefore, of the chopped tobacco layer that attempts to pass under the trimming disk, the excess chopped tobacco is scraped off by a large number of fins as the rotary brush rotates. After this, the chopped tobacco is collected and reused to form a chopped tobacco layer.
[0004]
[Problems to be solved by the invention]
In recent years, in order to increase the productivity of cigarette rods, the suction band of a cigarette manufacturing machine tends to increase its traveling speed, that is, the transport speed of the chopped tobacco layer. In such a situation, in order to stably adjust the thickness of the cut tobacco layer, the rotary brush of the trimming apparatus must also be rotated at a high speed.
[0005]
However, as the rotary brush rotates faster, the individual scraping fins will slam the surplus chopped tobacco, resulting in increased crushing of the chopped tobacco. For this reason, the chopped tobacco collected has a too small particle size and cannot be reused.
An object of the present invention is to provide a chopped tobacco layer trimming apparatus that reduces crushed tobacco and is suitable for increasing the speed of a cigarette manufacturing machine.
[0006]
[Means for Solving the Problems]
The above object is achieved by the chopped tobacco layer trimming apparatus of the present invention, and the chopped tobacco layer trimming apparatus of the cigarette making machine according to claim 1 is rotatably disposed in the vicinity of the suction band, and adsorbs to the suction band with the rotation. A trimming disc that is continuously cut into a cut tobacco layer that is formed and transported with a suction band , and divides the cut tobacco layer into a required layer portion and a surplus portion, and a surplus portion of the cut tobacco layer that cooperates with the trimming disc. The removing means is rotatably disposed immediately below the trimming disk, and the outer peripheral surface thereof traverses the cut tobacco layer and makes line contact with the lower surface of the trimming disk with the rotation. It is formed as a taper surface, and the taper surface of the cut tobacco layer is viewed in the transport direction. And peeler disk trapezoidal positioned on the upstream side of the outer periphery an outer peripheral edge of the smaller diameter side of the diameter, is formed on the outer periphery of the large diameter side of the peeler disk, as well as continuous in the circumferential direction of the peeler disk It consists of a peeling blade that moves while sliding on the lower surface of the trimming disk, and a flat guide surface that is formed by the end face on the large diameter side of the peeler disk and guides the removed surplus portion.
[0007]
According to the chopped tobacco layer trimming apparatus of the first aspect, the surplus portion of the chopped tobacco layer is removed from the chopped tobacco layer by peeling the peeler blade with the peeling of the peeler disk. Thereafter, the excess cut tobacco is removed by being guided by the flat guide surface of the peeler disk and discharged from the outer peripheral edge of the peeler disk.
[0009]
The chopped tobacco layer trimming apparatus according to claim 2 is configured such that the peeling blade moves obliquely across the chopped tobacco layer from the upstream side toward the downstream side in the conveying direction of the chopped tobacco layer, whereby the peeling blade is chopped tobacco. It can be easily cut into the layer and the excess is stripped off.
The engraved tobacco layer trimming apparatus according to claim 3 is provided on a pair of trimming disks respectively disposed on both sides of the suction band and on the outer periphery of each trimming disk, and the axis of the suction band is sandwiched with the rotation of the trimming disks. A plurality of periodically matching pockets are further provided, and the distance between the peeling blade and the axis of the peeler disk is periodically changed in the circumferential direction of the peeler disk to avoid interference between the peeling blade and the pocket.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, a portion of a cigarette making machine including a chopped tobacco layer trimming device is shown. As is well known, the cigarette making machine includes an endless suction band 2, which is wound around a pair of band rollers 4. As the band rollers 4 rotate, the suction band 2 travels in the vertical plane at a constant speed in the direction of arrow A in FIG. In FIG. 1, only one of the band rollers 4 is shown.
[0011]
The suction band 2 is disposed in the suction chamber 6, and the suction chamber 6 generates an air flow from the lower side to the upper side of the suction band 2. A chimney (not shown) is disposed on the other band roller side, and this chimney is positioned directly below the suction band 2. The chopped tobacco supplied into the chimney is blown up with air by the suction force of the suction chamber 6 and is adsorbed in layers on the lower surface of the suction band 2. Therefore, a cut tobacco layer TL0 is formed on the lower surface of the suction belt 2 that has passed through the chimney. The cut tobacco layer TL0 is transported together with the suction band 2, and then peeled off from the suction band 2 by a shoe or scraper (not shown) at the position of one of the band rollers 4, and supplied to the upper part of the cigarette making machine, that is, on the web Is done.
[0012]
A trimming device 8 is provided below the suction band 2, and the trimming device 8 is disposed in the vicinity of one band roller 4. The trimming device 8 includes a pair of left and right trimming disks 10 as viewed in the traveling direction of the suction band 2. These trimming disks 10 are made of metal and are arranged in the same horizontal plane. FIG. 1 shows only the axis of the rotating shaft to which one trimming disk 10 is attached.
[0013]
More specifically, as shown in FIG. 2, the pair of trimming desks 10 are respectively disposed on both sides of the suction band 2, and the outer periphery of these trimming disks 10 is below the suction band 2, and the suction band 2. Are adjacent to each other with a vertical plane including the axis of
The pair of trimming disks 10 are rotated in opposite directions, and the rotation directions are indicated by arrows B in FIG. Here, the outer peripheral edges of the trimming disks 10 close to each other move in the same direction as the transport direction A of the cut tobacco layer TL0 described above.
[0014]
A plurality of pockets 12 (see FIG. 1) are respectively formed on the outer peripheral portions of the pair of trimming disks 10, and these pockets 12 are arranged at equal intervals in the circumferential direction of the corresponding trimming disk 10. Here, during the rotation of the pair of trimming disks 10, the pockets 12 of one trimming disk 10 and the corresponding pockets 12 of the other trimming disk 10 periodically coincide with each other below the suction band 2.
[0015]
The trimming device 8 further includes a metal peeler disk 14. The peeler disk 14 is rotatably disposed immediately below the pair of trimming disks 10. More specifically, the peeler disk 14 is inclined with respect to the horizontal plane, and the angle θ between the peeler disk 14 and the trimming disk 10 is set to, for example, 15 ° to 45 °. Specifically, the inclination direction of the peeler disk 14 is set so that the upper part of the peeler disk 14 is located upstream of the lower part when viewed in the transport direction A of the cut tobacco layer TL0. Further, as is apparent from FIG. 1, the peeler disk 14 has a trapezoidal cross section, and its outer peripheral surface is a tapered surface 16. Tapered surface 16 becomes a shape tapered toward the lower surface side of the trimming disks 10 are in line contact with the lower surface of the pair of trimming disks 10 in the upper part of it. Therefore, the taper surface 16 moves while slidably contacting the lower surfaces of the pair of trimming disks 10, that is, the lower surfaces of the regions where the outer peripheral edges of the pair of trimming disks 10 are close to each other, as the peeler disk 14 rotates. Is cut across the tobacco layer TL0 from the upstream side toward the downstream side in the transport direction A of the tobacco layer TL0. That is, as is apparent from FIG. 3, the rotation axis C of the peeler disk 14 intersects the vertical plane including the transport axis of the cut tobacco layer TL at a predetermined angle. The peeler disk 14 is attached to one end of a rotating shaft 18, and the other end of the rotating shaft 18 is connected to a power transmission system (not shown). Therefore, when a rotational force is input to the rotary shaft 18 from this power transmission system, the peeler disk 14 rotates in the direction D in the drawing. The power transmission system described above also supplies a rotational force to the pair of band rollers 4 and the pair of trimming disks 10 of the suction belt 2.
[0016]
Referring now to FIG. 4, the peeler disk 14 is shown in detail. The taper surface 16 of the peeler disk 14 is not a smoothly continuous surface, and a plurality of transverse grooves 20 are formed on the taper surface 16, and these transverse grooves 20 are spaced at equal intervals in the circumferential direction of the peeler disk 14. Has been placed. Accordingly, the tapered surface 16 has a plurality of land portions 22. If each trimming disk 10 has six pockets 12 as shown, the tapered surface 16 also has six transverse grooves 20 and lands 22 respectively.
[0017]
As the peeler disk 14 rotates, the transverse grooves 20 and the land portions 22 of the tapered surface 16 alternately and periodically pass through regions where the outer peripheral edges of the pair of trimming disks 10 are close to each other. Here, each transverse groove 20 and a pair of corresponding pockets 12 of the pair of trimming discs 10 periodically coincide with each other. Can rotate. More specifically, in order to avoid interference with the pocket 12, each transverse groove 20 is inclined at a predetermined angle with respect to the rotation axis C of the peeler disk 14, and the inclination direction is apparent from FIG. In this way, when viewed in the rotation direction D of the peeler disk 14, one opening end of the transverse groove 22 located on the small diameter end face side of the peeler disk 14 is set to precede the other opening. Further, each transverse groove 20 has a predetermined width when viewed in the circumferential direction of the peeler disk 14 and a depth equal to the distance between the upper surface of the trimming disk 10 and the lower surface of the pocket 12. When the transverse grooves 20 are inclined in this way, the width of the transverse grooves 20 can be reduced to a necessary minimum.
[0018]
The outer peripheral edge located on the large-diameter end face side of the peeler disk 14 is formed as a peeling blade 24, and the peeling blade 24 is continuous in the circumferential direction of the peeler disk 14. More specifically, the peeling blade 24 includes an edge that defines an end edge of each land portion 22 and the other open end of each transverse groove 20. Therefore, the distance between the axis of the peeler disk 14 and the peeling blade 24 periodically changes in the circumferential direction of the peeler disk 14.
[0019]
The pair of trimming discs 10 and the peeler disc 14 described above are supported so as to be movable in the vertical direction in conjunction with each other, or the portion of the suction belt 2 positioned above the pair of trimming discs 10 can be raised and lowered. ing. Thereby, the space | interval between the suction belt 2 and a pair of trimming disc 10 can be adjusted.
[0020]
Next, the operation of the trimming device 8 described above will be described.
When the tobacco layer TL0 chopped on the suction band 2 is adsorbed and formed, the pair of trimming disks 10 and peeler disks 14 are in a rotating state. Here, the peeler disk 14 rotates while its peeling blade 24 is in sliding contact with the lower surface of the outer peripheral edge of the trimming disk 10.
[0021]
As the cut tobacco layer TL0 passes through the trimming device 8 along with the running of the suction band 2, the pair of trimming disks 10 cuts the outer peripheral edge of the cut tobacco layer TL0 into the cut tobacco layer TL0, and divides the cut tobacco layer TL0 vertically. At the same time, the peeling blade 24 is rotating while the peeling blade 24 is in sliding contact with the lower surface of the outer peripheral edge of the trimming disk 10 (including the lower surface of the pocket 12), so that the peeling blade 24 is engraved with the tobacco layer TL0 as shown in FIG. The lower part of the trimming disk 10 is peeled off from the lower surface. As a result, the surplus tobacco tobacco in the tobacco tobacco layer TL0 is removed in layers so as to peel off the tobacco tobacco layer TL0.
[0022]
Here, the excessively cut tobacco TLE peeled off collides with the large-diameter side end surface 26 (see FIG. 3) of the peeler disk 14, and is guided obliquely downward while being guided by the large-diameter side end surface 26. More specifically, when the surplus chopped tobacco TLE collides with the large-diameter side end face 26, the rotation of the large-diameter side end face 26 causes the motion vector toward the diagonally lower side of the suction band 2 to the surplus chopped tobacco TLE. give. Therefore, the excessively cut tobacco TLE flows while being guided by the large-diameter side end face 26 and is discharged downward from the outer periphery of the peeler disk 14.
[0023]
Further, the peeler disk 14, that is, the peeling blade 24 thereof is inclined with respect to the conveying direction of the cut tobacco layer TL0, so that the peeling blade 24 can be easily cut into the cut tobacco layer TL0, and the excess cut tobacco is peeled off smoothly. Will be.
Thereafter, surplus chopped tobacco TLE is collected by a collecting means (not shown) and reused as a raw material for the chopped tobacco layer TL0.
[0024]
After the chopped tobacco layer TL0 passes through the pair of trimming discs 10, the chopped tobacco layer remaining on the lower surface of the suction band 2, that is, the chopped tobacco layer TL1 after trimming, has a thickness at a distance between the trimming disc 10 and the suction band 2. It is precisely adjusted. Further, during the rotation of the pair of trimming discs 10, as described above, the pair of pockets 12 periodically match within the engraved tobacco layer TL0, and therefore the engraved tobacco layer TL1 after trimming has an amount corresponding to the capacity of the pocket 12. Thickened portions TLH (see FIG. 1) with increased thickness are periodically formed. Here, the thickened portion TLH is formed, for example, with an interval equal to the length of two cigarettes.
[0025]
Thereafter, the cut tobacco layer TL1 is supplied from the suction band 2 to the upper part of the cigarette making machine as described above. The cut tobacco layer TL1 supplied to the upper part of the winding is wrapped in a wrapping paper (not shown) as is well known, whereby the tobacco rod is continuously formed. The formed cigarette rod is fed from the upper part of the winding to the cutting part of the cigarette making machine, and at this cutting part, the cigarette rod is cut from the center of the part corresponding to the aforementioned thickened part to form individual double cigarettes.
[0026]
According to the trimming device 8 described above, trimming of the engraved tobacco layer TL0 is performed by removing the excess engraved tobacco TLE by peeling off the skin from the engraved tobacco layer TL0. At this time, a large load is applied to the excess tobacco tobacco TLE. There is no. Thereafter, the excessively cut tobacco TLE is guided by the large-diameter end surface 26 of the peeler disk 14 and flows, so that a large impact force is not applied to the excessively cut tobacco. Furthermore, since the excess cut tobacco TLE is discharged downward from the outer periphery of the peeler disk 14, the recovery of the excess cut tobacco is also facilitated. Therefore, the crushing of excess cut tobacco TLE is greatly reduced. As a result, the reuse rate of the collected surplus chopped tobacco TLE increases, while the transport speed of the chopped tobacco layer can be increased and the production efficiency of the tobacco rod can be increased.
[0027]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the rotation axis of the peeler disk 14 may extend in a vertical plane including the axis of the suction band 2. In this case, the peeling blade 24 of the peeler disk 14 moves in a direction perpendicular to the transport direction A of the cut tobacco layer TL1, and strips excess cut tobacco from the lower surface of the trimming disk 10.
[0028]
【The invention's effect】
As described above, according to the cigarette layer trimming apparatus of the cigarette manufacturing machine according to claim 1, the peeler disk cooperates with the trimming disk, and the peeling blade removes the surplus cigarette by peeling off the skin from the cigarette layer. Therefore, a large impact force is not applied to the removed excess tobacco. Moreover, the rotation of the flat guide surface in the peeler disk gives a motion vector in the direction away from the trimming disk with respect to the removed excess tobacco, so that the excess tobacco is well guided by the flat guide surface of the peeler disk. It is discharged without scattering from its outer periphery. Therefore, at the time of trimming the chopped tobacco layer, not only can the crushed tobacco be crushed and the reuse rate can be increased, but also it is suitable for speeding up the cigarette manufacturing machine.
[0029]
Further , according to the engraved tobacco layer trimming apparatus according to claim 1 , the peeling blade which is continuous along the outer peripheral surface of the peeler disk on the outer peripheral edge on the large diameter side of the tapered surface only by forming the outer peripheral surface of the peeler disk into a tapered surface. Can be easily obtained.
According to the chopped tobacco layer trimming apparatus of claim 2 , since the peeling blade passes obliquely across the chopped tobacco layer, not only the peeling blade is easily cut into the chopped tobacco layer, but in this case, the peeler disk The flat guide surface is also inclined with respect to the transport direction of the cut tobacco layer, so that the excess cut tobacco removed on the guide surface can be guided more smoothly.
Further, according to the engraved tobacco layer trimming apparatus of the third aspect, even if the trimming disk is provided with a pocket, interference between the pocket and the peeling blade can be avoided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a part of a cigarette manufacturing machine.
FIG. 2 is a diagram showing a positional relationship between a pair of trimming discs and a peeler disc.
FIG. 3 is a view taken in the direction of arrow III in FIG. 1;
FIG. 4 is a front view of a peeler disk.
[Explanation of symbols]
2 Suction band 10 Trimming disc 14 Peeler disc 16 Tapered surface 20 Transverse groove 24 Peeling blade 26 Large-diameter side end surface (flat end surface)

Claims (3)

A cigarette manufacturing machine is rotatably disposed near a suction band, continuously cut into a chopped tobacco layer formed by being adsorbed to the suction band and transported together with the suction band, and the chopped tobacco layer is separated from a required layer portion and a surplus. A horizontal trimming disc divided into parts;
Removing means for removing the excess portion of the cut tobacco layer in cooperation with the trimming disk;
The removing means includes
The outer peripheral surface of the trimming disk is formed as a tapered surface that traverses the cut tobacco layer and linearly contacts the lower surface of the trimming disk. A trapezoidal peeler disk, the outer peripheral edge of which is positioned upstream from the outer peripheral edge of the small diameter side in the transport direction of the tobacco layer ;
A peeling blade that is formed on the outer peripheral edge of the peeler disk on the large-diameter side, is continuous in the circumferential direction of the peeler disk, and moves while sliding on the lower surface of the trimming disk;
An engraved tobacco layer trimming apparatus of a cigarette manufacturing machine, comprising: a flat guide surface formed by an end face on the large diameter side of the peeler disk and guiding the removed excess portion. 2. The tobacco layer trimming of a cigarette manufacturing machine according to claim 1 , wherein the peeling blade moves diagonally across the tobacco layer from the upstream side toward the downstream side in the conveying direction of the tobacco layer. apparatus. A pair of trimming discs arranged on both sides of the suction band, and a plurality of trimming discs that are provided on the outer periphery of each trimming disc and that periodically match with the rotation of the trimming disc across the axis of the suction band Pocket and
Further comprising
The distance between the peeling blade and the axis of the peeler disk periodically changes in the circumferential direction of the peeler disk to avoid interference between the peeling blade and the pocket. Cigarette layer trimming device for cigarette making machine as described.

Images