JPS6438B2 - - Google Patents

Description

[Detailed description of the invention]

(Field of Industrial Application) The present invention relates to an apparatus for producing V-shaped tobacco shreds from tobacco sheets. (Prior Art) Generally, shredded tobacco shaped into a V-shape has a larger filling capacity than ordinary shredded tobacco, and is considered to be a preferred shredded tobacco for the production of cigarettes. Conventionally, as a method for producing shredded tobacco similar to the V-shaped shredded tobacco, there is a method disclosed in Japanese Patent Publication No. 16598/1983. However, in this method, the tobacco is first cut into tobacco pieces and then fed to the meshing part of a pair of cylindrical gears that rotate while meshing to give the tobacco pieces unevenness and twist. There is a limit to the extent to which unevenness can be imparted only by passing through the mating portion, and there is a drawback that a sufficiently satisfactory increase in filling capacity cannot necessarily be obtained. (Problems to be Solved by the Invention) The present invention has been made by focusing on the above-mentioned drawbacks of conventional means for increasing the filling capacity of tobacco. The purpose is to provide a device that can be manufactured accurately, reliably, and stably. (Means for Solving the Problems) The present invention will be described below with reference to the accompanying drawings showing embodiments. FIG. 1 is a front view of the V-shaped tobacco shredded manufacturing apparatus of the present invention, FIG. 2 is a plan view of the same, and FIG. An outline is shown. First, the manufacturing process of V-shaped tobacco shreds using the apparatus of the present invention will be explained with reference to FIG. First, in step (1), longitudinal folds a are sequentially formed so that both sides of the tobacco sheets S that are continuously fed in the arrow direction are folded downward. Then (2)
In the process, folds b and b in the opposite direction to the folds a and a are successively formed adjacent to the inner sides of the folds a and a on both sides. Next, in step (3), creases b and c in the opposite direction to b are sequentially formed between the creases b and b. The folds a, which are formed in this way,
Folds in the longitudinal direction are formed in the tobacco sheet S by b and c. Next, in step (4), the folded portion of the pleated tobacco sheet S is compressed to form a folded compressed tobacco sheet S ₁
is formed. Next, in step (5), the folded compressed tobacco sheet _S1 is turned over by 90 degrees. Next, in step (6), the folded compressed tobacco sheet S ₂ is cut approximately along the center line d in the longitudinal direction of the sheet surface, and then sequentially cut into narrow widths e in a direction substantially perpendicular to the longitudinal direction from the front part. As a result, V-shaped tobacco shreds Tv as shown in (7) are obtained. Next, the present invention will be explained based on FIGS. 1 and 2. In the figure, the V-shaped tobacco shredding device (hereinafter simply referred to as the device) of the present invention includes a plurality of pairs of transfer/folding rollers 2, 3, 4 placed on a pedestal 1 and a plurality of folding guide plates 5, 6, 7. , 7a, 8, and a tobacco sheet folding/transporting means A comprising a folding guide plate 5 on both outer sides and reducing the interval between the folding guide plates 5 toward the front, and a plurality of mutually opposing guide rollers 9a, 9b,
10a, 10b, 11a, 11b, 12a, 12
a folding part compression means B consisting of a pair of folding belts 13a and 13b, each wound around the front part of the folding belt 13a and 13b with a narrow facing interval at the front part; and a round blade 14 for cutting the folded and compressed tobacco sheet in the longitudinal direction. The cutting means C includes a cutting means C, and a cutting means D includes a cutting blade 15 for cutting the tobacco sheet cut in the longitudinal direction in a direction perpendicular to the longitudinal direction. In the above configuration, the folding transfer means A is shown in FIG.
Corresponding to the steps (1) to (3), the folding portion compression means B corresponds to the step (4), and the cutting means C and the cutting means D correspond to the steps (5) to (6), respectively. Next, the above configuration will be explained in detail for each means. First, the configuration of the folding transfer means A will be explained. The first conveying and folding roller 2 consists of a pair of upper and lower rollers 2a and 2b installed on the pedestal 1 located at the front end of the tobacco sheet holder 16a, and the second
The transport/folding roller 3 consists of a pair of upper and lower rollers 3a and 3b installed in front of the roller 2, and
The third transport/folding roller 4 is a pair of upper and lower rollers 4a, 4 disposed further forward of the second roller 3.
b, and the upper roller 4a is formed of a grooved roller. Thus, the outer edge of the upper roller 2a of the first transfer/folding roller 2, the pair of upper and lower rollers 3a, 3b forming the second transfer/folding roller 3, and the lower roller 4b of the third transfer/folding roller 4. There are annular projections 2a' and 3 for folding the cigarette sheet.
a', 3b', and 4b' (described later) are provided around each.
These rollers are gear 17, pulleys 18, 19, 20, gears 21, 2 driven by prime mover _M1 .
2. Driven via a belt 23 or the like. Next, the folding guide plate 5 is moved from the outer side of the first transfer/folding roller 2 to the third transfer/folding roller 4 on both edge sides of the pedestals 16b and 16c, which are respectively arranged in front of the pedestal 16a on the pedestal 1. They are arranged in pairs, extending to the position of , and the distance between them is reduced toward the front. A pair of folding guide plates 6 are arranged in parallel inside the folding guide plate 5, extending from slightly in front of the rollers 2 to positions on both outer sides of the rollers 3. Further, a pair of folding guide plates 7 are arranged in parallel inside the folding guide plate 6 from slightly in front of the roller 2 to the roller 3, and the folding guide plate 7a extends from the roller 3 to the roller 4 at an interval of the folding guide plate 7. They are arranged in a pair parallel to each other with a slightly narrower interval than the above. Furthermore, the folding guide plate 8 is a folding guide plate 7a.
1 from roller 3 to the front end position of roller 4 in the middle of
A sheet is arranged. All of these folding guide plates are arranged vertically, and include the lower edge of folding guide plate 5, the upper edge of folding guide plate 6, the lower edge of folding guide plates 7 and 7a, and the upper edge of folding guide plate 8. The position of is set in relation to the positions of the transport and folding rollers 2, 3 and 4 at a position where creases are formed in the tobacco sheet as shown in the process of FIG. Next, the guide rollers constituting the folding portion compression means B are a plurality of pairs (four pairs in the illustration) of rollers 9a, 9b, 10a, 10b, 11a, 11b facing each other.
and a pair of folding belts 13a, which are endlessly wound around each pair of rollers.
The distance between the facing surfaces of the rollers 13b is narrowed from the rear to the front, and the front rollers 11a, 11b,
The opposing surfaces of the folding belts wound around 12a and 12b are very close to each other. The above guide rollers are connected to pulleys 24, 25, 26, 2, and some of the rollers (9a and 9b in the figure)
7. Driven by the drive source _M1 via the belt 28 etc., the folding belts 13a and 13b are rotated so that the opposing inner sides thereof move forward. Furthermore, 16b
is a holder for cigarette sheets. Next, the means C for cutting the folded and compressed tobacco sheet in the longitudinal direction includes a tunnel 29 for inverting the folded and compressed tobacco sheet by 90 degrees;
A pair of plate-shaped reversing guides 30 twisted at 90 degrees are installed inside the tunnel 29. In addition, the cutting section 31 is connected to the mount 3.
2, a pair of upper and lower transfer rollers 33, a guide 36 provided on a cutting table 35 placed on a pedestal 32 and having a slit 34 in the center, a round cutting blade 14, and a round blade polishing plate 37. Consists of etc. The round blade 14 is located at the center of the cutting table 35, and the slit 34
The round blade polishing plate 37 is installed in a vertical direction with a part facing inside, and the round blade polishing plate 37 is installed diagonally above and in contact with the round blade 14. The rotation of the round blade 14 is driven by a prime mover via a gear 38.
Performed by M ₂ . Further, the transfer roller 33 is driven by the same driving source as the transfer/folding roller 4, etc. described above, via a gear 39, pulleys 40, 41, a belt 42, etc.
Transmission driven by _M1 . In the above cutting means C, when the round blade 14 is installed horizontally, the folded compressed tobacco sheet is
The tunnel 29 for the 90° reversal can be omitted. Next, the means D for cutting the folded compressed tobacco sheet in a direction perpendicular to the longitudinal direction includes a pair of upper and lower transport rollers 43, one of the transport rollers 43, and the roller 4.
An endless transfer belt 45 wrapped between the
Position adjustment means 46 for the transfer belt 45, cutting table 47
and a cutting blade 15, etc. The position adjustment means 46 of the transfer belt 45 is formed by fixing one end of an arm 49 with a rotatable support shaft 48 at the center to the shaft of the roll 44, and abutting an adjustment screw 50 on the other end. 50 supports the support shaft 48
The position of the roll 44 is adjusted via. The transfer roller 43 is driven by a pulley (not shown) that rotates coaxially with the pulley 40 via a gear 51, a pulley 52, and a belt 53. Further, the cutting blade 15 has a plate-shaped blade 54 whose lower edge is the cutting edge.
is attached to a support body 56 with a fixing screw 55 so as to be able to slide vertically, and the position of the cutting edge of the plate-shaped blade 54 is adjusted with a push-in screw 57. This plate-shaped blade 54 has a support shaft 58
gears 60,
It is driven in the vertical direction at high speed by the prime mover _M3 via 61. (Function) Next, the function of the device of the present invention having the above-mentioned configuration will be explained in the fourth figure showing the cross section A-A in Fig. 1 in addition to the above-mentioned drawings.
The explanation will be made with reference to FIG. 5, which shows a cross section along line B-B, and FIG. 6, which shows a cross section along line C-C. First, when the tobacco sheet S continuously supplied onto the receiving plate 16a is transferred to the first transfer/folding roller 2, both sides of the tobacco sheet protruding outward from the roller 2 are shaped like the outer edge ring of the upper roller 2a. It is folded downward by the protrusion 2a' and the folding guide plate 5 having a lower edge on the outer side thereof (see FIG. 4), resulting in the state shown in FIG. 3, and creases a and a are formed. When the cigarette sheet S is further transported forward, the upper surface between the folds a and a comes into contact with the lower edge of the folding guide plate 7, with the folds a and a held on the upper edge of the folding guide plate 6. When the tobacco sheet S reaches the position of the second rollers 3a, 3b, it is folded in the direction opposite to the creases a, a by the outer edge annular projections 3a', 3b' of the rollers 3a, 3b (see Fig. 5), and 3 The state shown in FIG. 2 is reached, and folds b and b are formed. When the cigarette sheet S is further transported from this state, the folds a, a are constrained by the folding guide plate 5 whose interval is narrowed, and the angle gradually increases, and at the same time, the folds b, b are constrained by the folding guide plate 7a. The lower surface of the cigarette sheet between the folds b and b comes into contact with the upper edge of the folding guide plate 8 while being held on the lower edge of the folding guide plate 8. The tobacco sheet S is the third roller 4
When the roller 4 is moved to the position shown in FIG.
b' is folded in the direction opposite to the folds b and b (see FIG. 6), resulting in the state shown in FIG. 3, and a crease c is formed. The folded tobacco sheet S ₁ on which the folds a, b, and c have been formed by the folding and conveying means A as described above is gradually moved by the opposing folding belts 13a and 13b whose interval is reduced toward the front in the folding section compression means B. The folded portion is compressed to the state shown in FIG. 3 and 4. The folded and compressed tobacco sheet _S2 is then transferred to the cutting means C, and is passed through the reversing guide 3 in the tunnel 29.
0, the tobacco sheet surface is oriented horizontally as shown in FIG. Tobacco sheet S ₂ whose sheet surface is horizontally reversed is
Next, the tobacco sheet S 2 is transported below the round blade 14 rotating on a cutting table 35 which is further compressed and held by the transport roll 33, and the central portion of the tobacco sheet S ₂ is cut in the longitudinal direction, thereby dividing the tobacco sheet S ₂ into two. The tobacco sheet S ₂ divided into two in the longitudinal direction is held by the guide 36 and transferred to the next cutting means D. Tobacco sheet divided into two by cutting means D
The tobacco sheet S ₃ is held and transported by a transport roll 43 and a transport belt 45, and is shredded with a constant width in a direction perpendicular to the transport direction of the tobacco sheet S ₃ by the vertical reciprocating movement of a plate-shaped blade 54 at the tip of a cutting table 47. V-shaped tobacco shreds Tv shown in FIG. 3 and 7 are obtained. The vertical reciprocating movement of the plate-shaped blade 54 is performed by swinging a crankshaft 59 via a support shaft 58. Note that the round blade 14 is continuously polished by a round blade polishing plate 37 in conjunction with the rotation of the round blade 14.
Further, the plate-shaped blade 54 is polished by operating the fixing screw 55 and the push-in screw 57, removing the plate-shaped blade 54 from the support body 56, and replacing it with a separately polished plate-shaped blade. V-shaped tobacco shreds obtained by the device of the present invention
Since the TV is three-dimensional V-shaped, the filling capacity is significantly large. Next, we measured the filling capacity of the V-shaped tobacco shreds according to the present invention and regular tobacco shreds, calculated the amount of tobacco shredded necessary to make one cigarette that is optimal for smoking from the measured volume, and compared the results. As shown in Table 1, the filling capacity increased by more than 32% compared to ordinary shredded tobacco.

[Table] To measure the filling capacity, put 15g of shredded tobacco into a cylinder container with an inner diameter of 7.2cm, and measure the diameter from above.
When the cigarette is compressed at a constant velocity of 0.5 mm/sec by a 7.0 cm disc, the repulsive force exerted by the cigarette as it is compressed is
This was done by calculating the volume of the cigarette when it reached 250g/cm ² . (Effects of the Invention) Since the V-shaped tobacco shredding device of the present invention has the configuration and operation described in detail above, V-shaped tobacco shredding with an extremely high filling capacity can be continuously and stably performed using a relatively simple device. This has the advantage that it can be manufactured reliably.

[Brief explanation of drawings]

Fig. 1 is a front view of the V-shaped tobacco shredding manufacturing device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a schematic explanatory diagram of the manufacturing process, and Fig. 4 is a schematic cross section taken along line A-A in Fig. 2. Figure 5 is a schematic sectional view of the same B-B, and Figure 6 is a schematic cross-sectional view of the same B-B.
-C shows a schematic sectional view. 2, 2a, 2b...first transfer and folding roller,
3, 3a, 3b...second transfer and folding roller, 4,
4a, 4b...Third transfer and folding roller, 5, 6,
7, 7a, 8...folding guide plate, 13a, 13b...
...folding belt, 14...round blade, 15...cutting blade,
29...Tunnel, 30...Reversing guide, 31...
... Cutting section, 33 ... Transfer roller, 37 ... Round blade polishing plate, 43 ... Transfer roller, 45 ... Transfer belt, 54 ... Plate blade, 58 ... Support shaft, 59 ... Crank shaft.

Claims (1)

[Claims] 1. A means for folding and transporting tobacco sheets, which is provided with a plurality of pairs of transporting and folding rollers and a plurality of folding guide plates, and the interval between the folding guide plates on both outer sides is reduced toward the front, and facing each other. Equipped with a folding section compression means consisting of a pair of folding belts each wound around a plurality of guide rollers and having a narrow facing interval at the front, and a round blade for cutting the folded and compressed tobacco sheet in the longitudinal direction. and a cutting means equipped with a cutting blade that cuts the tobacco sheet cut in the longitudinal direction in a direction perpendicular to the longitudinal direction. Manufacturing equipment.