JPH11346747A - Device for winding up tobacco - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tobacco-winding device equipped with a filled amount- measuring function capable of simply and highly accurately measuring the amounts of filled cut tobacco at the respective longitudinal portions of the continuously wound bar-like tobacco. SOLUTION: This device for winding up tobacco is equipped with a pair of electrostatic electrodes 11a, 11b disposed on both the sides of continuously wound bar-like tobacco in a mutually faced state and with a measuring means 12 for continuously measuring the moisture contents and water percents of the bar-like tobacco at the respective longitudinal portions from the changes of capacitance between a pair of the electrostatic electrodes to continuously determine the filled amounts of the cut tobacco.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple and accurate method for measuring the filling amount of a cut cigarette in each longitudinal portion of a bar-shaped cigarette obtained by continuously winding a continuously supplied cut cigarette with a long wrapping paper. The present invention relates to a cigarette hoisting device provided with a measuring means that can be used.

[0002]

[Related Background Art] Cigarettes (cigarettes)
The cigarette is manufactured using a cigarette hoisting apparatus configured as schematically shown in FIG. That is, the chopped tobacco 2 a supplied into the hopper 1 is adsorbed on the lower surface of the transfer belt (tobacco band) 3 a arranged in the suction section 3 and is continuously supplied to the paper winding section 4. At this time, the suction amount (supply amount) of the cut tobacco 2a that is adsorbed on the lower surface of the transfer belt 3a and conveyed (supplied) to the paper winding unit 4 is controlled by an eclector disk 5 described later. In the paper winding unit 4, the cut cigarette 2 a is continuously wound up in the longitudinal direction with a long paper roll 6 continuously supplied from a roll to form a long rod-shaped tobacco (tobacco rod) 2 b as described later. doing. The cutting unit 7 cuts the rod-shaped cigarette 2b into predetermined lengths, for example, a so-called double-wound (W-rolled) cigarette 2c corresponding to a length of approximately two final cigarettes, and a filter attachment in the next step. 8 is supplied continuously.

As shown in FIG. 2, the wrapping paper 4 is directed upward and inward while conveying the wrapping paper 6 by means of a garniture tape 4b which is driven at a speed controlled by a main shaft 4a. The tobacco 2a continuously supplied onto the wrapping paper 6 is continuously wound up in cooperation with the tongue 4c disposed on the upper side thereof.
The running speed of the transfer belt 3a, which is the speed at which the cut tobacco 2a is supplied to the paper winding unit 4, is determined in synchronization with the rotation of the main shaft 4a.

The rotation of the main shaft 4a (the garniture tape 4)
The running speed of the eclector disk 5 is basically controlled in synchronization with the suction speed of the suction belt 3 by the negative pressure of the suction portion 3 to regulate the cut tobacco 2a adsorbed on the lower surface of the transfer belt 3a to a predetermined thickness. By scraping off the surplus, the amount of adsorption (supply amount) is regulated. As a result, the supply amount of the cut tobacco 2a to the paper winding unit 4 and thus the paper 6
Controls the filling amount (filling density) of the cut tobacco 2a wound up as the rod-shaped tobacco 2b.

[0005] Incidentally, pockets 5a for partially increasing the filling amount of the cut tobacco 2a are formed in the eclector disk 5. Due to the presence of the pocket 5a, each time the eclector disk 5 rotates by a predetermined angle, for example, 、, in other words, the tobacco 2a cut with the rotation of the main shaft 4a.
Each time is wound up to a predetermined length as the rod-shaped tobacco 2b, the supply amount of the cut tobacco 2a to the paper winding unit 4 is partially increased. As a result, the filling density of the tobacco 2a, which has been chopped at every predetermined length, is partially increased in the long rod-shaped tobacco 2b, and the portion is in a so-called solid wound state. This solid-wound portion serves as a cut portion for cutting out the above-mentioned W-wrapped tobacco 2c and, finally, a single roll of tobacco (cigarette), and the cut-out tobacco 2a from the cut end is prevented from dropping (falling). You. That is, the filling density of the cut tobacco 2a in the rod-shaped tobacco 2b is partially increased corresponding to the portions (dense ends) at both ends of one cigarette.

[0006]

A rod-shaped tobacco 2b formed by continuously winding the cut tobacco 2a as described above.
Is measured as the filling amount (filling density) of the cut tobacco 2a at each portion in the longitudinal direction using, for example, a radiation density detector. The packing density of the chopped tobacco 2a measured in this way is, for example,
By integrating over a predetermined length of b, cigarette 1
The average filling amount per unit (average amount), the standard deviation of the filling amount, and the like are obtained. The average filling amount is fed back and, for example, the supply amount of the cut tobacco 2a by the eclector disk 5 is variably adjusted to control the filling amount of the cut tobacco 2a with respect to the rod-shaped tobacco 2b. In the case where the average filling amount (average amount) of the cut tobacco 2a is insufficient, the W-wrapped tobacco 2c cut out from the rod-shaped tobacco 2b including the insufficient filling amount,
Alternatively, post-processing such as removing cigarettes (cigarettes) obtained by bisecting the W-wrapped tobacco 2c is performed.

[0007] The filling amount of the cut tobacco 2a in the rod-shaped tobacco 2b is measured by irradiating the rod-shaped tobacco 2b exclusively with radiation such as β-ray and detecting the amount of transmission. However, in this case, there are various restrictions such as the need to prevent radiation leakage.

On the other hand, Japanese Patent Application Laid-Open No. 9-325123 discloses a technique for measuring the weight, moisture and the like of a cigarette by utilizing the shift and attenuation characteristics of the resonance frequency of a microwave introduced into a resonator. You. However, for this purpose, it is necessary to pass a cigarette (stick wound tobacco) through the resonator, and it is necessary to control the frequency and the like of the microwave to be introduced into the resonator with high accuracy, and to examine its change characteristics. . Moreover, it cannot be denied that the device configuration becomes large.

Japanese Patent Application Laid-Open No. 7-308179 discloses that
The amount of water in the cigarette (stick-wrapped tobacco) is measured using a capacitance sensor, and the mass (density) of the cut tobacco in the cigarette is measured using an ultrasonic sensor, and the filling amount of the cut tobacco 2a in the cigarette is determined according to the measurement results. A required technique is disclosed. However, it is complicated to use different types of sensors in combination,
There are problems such as a complicated device configuration.

The present invention has been made in view of such circumstances, and an object of the present invention is to enable a simple and highly accurate measurement of the filling amount of a cut cigarette in each longitudinal portion of a continuously wound rolled cigarette. For example, it is an object of the present invention to provide a cigarette hoisting apparatus having a function of measuring a filling amount of a cut tobacco, which is suitable for controlling the filling amount of a cut tobacco and for controlling the rejection of tobacco having an insufficient filling amount (defective product).

[0011]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a rod-shaped cigarette formed by continuously winding cut tobacco, which is continuously supplied at a controlled filling amount, on a long paper roll. The present invention relates to a cigarette hoisting device that cuts a bar-wound tobacco at a predetermined length and supplies it to the next step, and a pair of electrostatic electrodes that are arranged to face each other with the bar-wound tobacco continuously wound up therebetween, Measuring means for determining the water content and the water content in each of the longitudinal portions of the rod-shaped tobacco from the change in the capacitance between the electrostatic electrodes, and measuring the filling amount of the cut tobacco according to the water content and the water content. It is characterized by doing.

In the measuring means, a capacitor bridge circuit having the pair of electrostatic electrodes as one capacitor is constituted, and the capacitor bridge circuit is provided by a plurality of AC signals having different frequencies. It is characterized in that the bridge circuit is driven to determine the water content and the water content in each of the longitudinal portions of the stick cigarette from the output change of each frequency component.

That is, by driving the capacitor / bridge circuit with a plurality of AC signals having different frequencies, the stick-wound tobacco is obtained from a change in the capacitance between the pair of electrostatic electrodes measured under the respective frequency components. Is characterized in that the moisture content and the moisture content in each part in the longitudinal direction are determined, and the filling amount of the tobacco is obtained in accordance with the moisture content and the moisture content.

According to a third aspect of the present invention, based on the instantaneous value of the filling amount in each of the longitudinal portions of the cut tobacco obtained by the measuring means, it is possible to determine whether the local filling amount in each of the longitudinal portions of the stick cigarette is excessive or insufficient. It is characterized by comprising means for determining, and means for integrating the instantaneous value of the filling amount to obtain the filling amount of the shredded tobacco per cigarette.

That is, the filling amount in each longitudinal direction of the cut tobacco obtained by the measuring means is sequentially compared with a preset threshold value to determine a locally overfilled portion or an underfilled portion in the longitudinal direction of the stick cigarette. Detecting and integrating the above filling amount to determine the filling amount of the cut tobacco per cigarette, judging the excess or deficiency thereof, and providing the same to the filling amount control, and also providing the discharge control of the defective product with the insufficient filling amount. It is characterized by.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cigarette hoisting apparatus according to an embodiment of the present invention will be described with reference to the drawings.

The cigarette hoisting device according to this embodiment comprises:
Basically, as described above with reference to FIGS. 1 and 2,
Minced tobacco 2a continuously supplied with controlled filling amount
Is continuously rolled up in a longitudinal direction with a long wrapping paper 6 to form a rod-shaped tobacco (tobacco rod) 2b. The rod-shaped tobacco 2b is cut into predetermined lengths and continuously supplied to the filter attachment 8. It is constituted as follows.

In particular, this cigarette hoisting device is characterized in that, for example, a pair of electrostatic electrodes are provided at the outlet side of the cigarette unit 4 and opposed to each other with the stick-wound tobacco 2b interposed therebetween.
The point is that the filling amount (filling density) of the cut tobacco 2a in each longitudinal portion of the rod-shaped tobacco 2b is continuously measured from the change in the capacitance between the pair of electrostatic electrodes.

That is, as shown in FIG. 3, the transport path of the rod-shaped tobacco 2b formed by continuously winding the tobacco 2a cut by the long wrapping paper 6 in the longitudinal direction, sandwiches the rod-shaped tobacco 2b. A pair of electrostatic electrodes 11a and 11b are arranged to face each other. These electrostatic electrodes 11a and 11b are
For example, it is formed of an electrode plate having a semicircular curved surface along the peripheral surface of the rod-shaped tobacco 2b. The electrode plate is slidably in contact with the peripheral surface of the rod-shaped tobacco 2b and opposed to each other.

The detecting circuit 12 regards the pair of electrostatic electrodes 11a and 11b as a single capacitor having the rod-shaped tobacco 2b sandwiched therebetween as a dielectric material, and detects the pair of electrostatic electrodes 11a and 11b between the electrostatic electrodes 11a and 11b. It detects a change in capacitance, and is realized, for example, as a capacitor bridge circuit as shown in FIG. The capacitor bridge circuit will be described later.

The capacitor formed by the pair of electrostatic electrodes 11a and 11b is, as shown in FIG. 5A, in principle, as shown in FIG. , 11b, and the dielectric constant of the rod-shaped tobacco 2b sandwiched between these electrostatic electrodes 11a, 11b and acting as a dielectric is ε, these electrostatic electrodes 11a, 11b and the rod The cigarette 2b is
It can be equivalently expressed as a capacitor as shown in FIG. And the electrostatic electrode 11 in this capacitor
The capacitance C between a and 11b can be expressed as C = ε · A / d.

If the opposing area A of the pair of electrostatic electrodes 11a and 11b is constant and the opposing distance d is constant, the capacitance C of the capacitor is equal to the dielectric constant ε of the rod-shaped cigarette 2b. Will depend on Incidentally, the dielectric constant ε of the stick-wound tobacco 2b is, when the amount of water contained in the cut tobacco 2a is constant, the amount (filling amount) of the cut tobacco 2a caught in the stick-wound tobacco 2b having a constant thickness, and the filling density Q thereof. It changes according to. Therefore, when the packing density Q of the cut tobacco 2a changes by ΔQ, the dielectric constant ε changes by Δε. Therefore, if the change ΔC of the capacitance C of the capacitor is measured, it becomes possible to measure the change Δε of the dielectric constant and the change ΔQ of the packing density (filling amount) of the cut tobacco 2a.

As shown schematically in FIG. 5 (c), when a slight gap f exists between the rod-shaped tobacco 2b having a dielectric constant of ε and the electrostatic electrodes 11a, 11b,
The capacitor C formed between a and 11b is equivalently equivalent to three capacitors connected in series as shown in FIG. 5D. However, the dielectric constant ε of the gap f
o is 1/10 of the dielectric constant ε of the stick-wound tobacco 2b.
Since the gap f is very small, the capacitance dC there is substantially negligible. However, in practice, it is desirable to set the gap f to zero (0) in order to increase the detection sensitivity. Therefore, the pair of electrostatic electrodes 11a, 11b
May be slidably in contact with the peripheral surface of the rod-shaped tobacco 2b so as to be opposed thereto.

On the other hand, since the tobacco tobacco 2b has a long cylindrical shape (circular cross section), as shown in FIG. 5 (e), the plate-shaped electrostatic electrodes 11a, 1
1b, the electrostatic electrodes 11a, 1
Since the gap at both ends of 1b becomes large, it cannot be denied that the loss there increases. Therefore, as shown in FIG. 5 (f), it is desirable that the electrostatic electrodes 11a and 11b are electrode plates having a semicircular curved surface, thereby minimizing the gap between the rod-shaped tobacco 2b. However, in this case, the capacitor formed between the pair of electrostatic electrodes 11a and 11b can be regarded as an aggregate of a plurality of minute capacitors connected in parallel in the width direction.
The overall capacitance C is given as the sum of the individual capacitances of these minute capacitors. Therefore, the capacitance C of the capacitor may be determined by integrating the capacitance of a minute capacitor in which the distance d between the electrodes changes sequentially in the width direction of the electrode. However, in practice, the capacitance Cstd between the electrodes 11a and 11b at a standard packing density of the cut tobacco 2a is obtained in advance,
Based on the capacitance Cstd, the electrodes 11a, 11b
If the change in the packing density (filling amount) of the cut tobacco 2a is determined from the change in the capacitance between the two, the purpose can be sufficiently achieved.

As described above, the pair of electrostatic electrodes 11a,
As described above, the detection circuit 12 for detecting the capacitance C between the capacitor 11b and the capacitor 11b is realized as, for example, a capacitor bridge circuit as shown in FIG.
This capacitor-bridge circuit is driven by an alternating-current signal AC of a predetermined frequency by bridging a capacitor Cx composed of the pair of electrostatic electrodes 11a and 11b and three capacitors C1, C2 and C3 having predetermined capacitances. Then, the bridge output is rectified and taken out through a diode bridge circuit DB. The output voltage Eo of the capacitor bridge circuit is equal to the AC signal A.
If the AC voltage applied from C is E, the capacitances of the capacitors C1, C2, C3 are C, and the capacitance of the capacitor Cx is (C + ΔC), Eo = (1/2) · (ΔC / C) · E Becomes However, when the frequency of the AC signal AC is [ω], the output voltage Eo is detected as a pulsating flow of the frequency [2ω]. In practice, it is desirable that the output voltage Eo be smoothed and detected as a DC component.

Therefore, the filling amount (filling density) of the cut tobacco 2a with respect to the rod-shaped tobacco 2b changes, and the capacitance of the capacitor Cx formed by the electrostatic electrodes 11a and 11b changes by ΔC. The capacitor
Since the output voltage Eo of the bridge circuit changes, the filling amount (filling density) of the cut tobacco 2a is calculated according to this.
Eventually, the change can be detected.

By the way, the amount of water contained in the cut tobacco 2a is not always constant, and there is a fluctuation range of about 3 to 5% even though the quality condition is controlled. Therefore, when the filling amount of the cut tobacco 2a is obtained as described above, the measured value includes an error of about 3 to 5%.

Therefore, in the detection circuit 12 incorporated in the tobacco hoist according to the present embodiment, a plurality of (2) having different frequencies as shown in FIG. (Types) of AC signals 22 and 23 to drive the capacitor bridge circuit 21 under each frequency component. The frequency of the AC signals 22 and 23 is easily dependent on the amount of water contained in the cut tobacco 2a.
It is easy to depend on the low frequency (50 kHz) of 0 kHz or less and the overall density of the cut tobacco 2a, for example, 100 kHz.
A frequency higher than z (300 kHz) is selected.

The capacitor bridge circuit 2
The output of 1 is, for example, 300 kHz filters 24 and 50
After the frequency components are selectively extracted through the kHz filter 25, the DC components are obtained by the detection circuits 26 and 27. In particular, the 50 kHz component detected via the detection circuit 27 exclusively indicates the amount of water contained in the cut tobacco 2a. Further, the differential amplifier 28 detects the moisture content of the shredded tobacco 2a by performing a difference process on the output of each of the detection circuits 26 and 27. The computing unit 29 obtains the filling amount of the cut tobacco 2a from the water content and the moisture content of the cut tobacco 2a obtained as described above, and outputs this.

That is, assuming that the mass of the cut tobacco 2a is m, if the water content is w and the water content is x (%), the following relationship holds: x = w · 100 / (m + w). Therefore, when the water content w and the water content x are obtained as described above, the computing unit 29 obtains the mass (filling amount) m of the cut tobacco 2a as m = (w · 100 / x) −w. Has become. In particular, in the detection circuit 12 configured as shown in FIG. 6, a change Δm in the mass (filling amount) of the cut tobacco 2a is obtained from the change Δw in the moisture amount w and the change Δx in the moisture ratio x and output. It has become something.

As described above, in the cigarette hoisting apparatus according to the present invention, the change in the capacitance of the capacitor formed by the pair of electrostatic electrodes 11a and 11b is determined by the filling amount of the cut tobacco 2a in each of the longitudinal portions of the rod-shaped tobacco 2b. Is sequentially measured as the local mass of the rod-shaped tobacco 2b at a portion sandwiched between the pair of electrostatic electrodes 11a and 11b. In particular, the filling amount of the cut tobacco 2a is instantaneously captured as a change in the capacitance between the electrostatic electrodes 11a and 11b without using a heterogeneous sensor such as an ultrasonic sensor. Therefore, the measuring section can be configured very simply.

Returning to FIG. 3, in the cigarette hoisting apparatus, as described above, the pair of electrostatic electrodes 11a, 11b
From the change in the capacitance during the period, the filling amount of the cut tobacco 2a at each portion in the longitudinal direction of the continuously wound rod tobacco 2b is continuously measured by the detection circuit 12. The filling amount signal output from the detection circuit 12 corresponds to each portion in the longitudinal direction of the rod-shaped tobacco 2b, for example, as shown in FIG. 7 (c). The above-mentioned filling amount signal (so-called amount signal) detected by the detecting circuit 12
Is supplied to the spot determination circuit 13 and to the first and second integration circuits 14 and 15, respectively.

The first integrating circuit 14 is provided with the detecting circuit 12
Is integrated as shown in FIG. 7 (d) to obtain the filling amount of the cut tobacco 2a per cigarette in the stick-wound tobacco 2b. That is,
The first integrating circuit 14 converts the filling amount signal over one cigarette according to a timing signal T as shown in FIG. 7B, which indicates a cutting position of the rod-shaped tobacco 2b synchronized with the rotation of the main shaft 4a. Integrate and hold the sample of the integrated value.

The defective product elimination section 16 sets the integral value (the filling amount of the cut tobacco 2a per cigarette) sampled and held by the first integrating circuit 14 in advance according to the target filling amount. By comparing them with the filling amount thresholds V + and V-, respectively, it is determined whether the filling amount is excessive or insufficient. When the filling amount is excessive (heavy winding) or insufficient (light winding), an exclusion signal is issued at a predetermined timing in order to eliminate the cigarette of the corresponding portion cut out from the stick-wound tobacco 2b.

The spot determination circuit 13 compares the instantaneous value of the magnitude signal obtained by the detection circuit 12 with first and second threshold values S + and S- set in advance. The local filling amount (filling density) is determined continuously. Then, the spot determination circuit 13 detects a locally overfilled portion (hard spot) and a locally underfilled portion (soft spot) of the shredded tobacco 2a at each of the longitudinal portions of the rod-shaped tobacco 2b by the above determination. .

Incidentally, the first threshold value S + is based on a target filling amount (filling density) in a cut target portion (dense end portion) in which the filling amount of the partially cut tobacco 2a of the bar-wound tobacco 2b is increased. , 15-25 more than that
It is set as a% higher value. The second threshold S-
Is the target filling amount (filling density) of the cut tobacco 2a in the main portion of the stick-wound tobacco 2b excluding the cutting target portion.
It is set as a value that is 15 to 25% lower than that. When the local packing density of the cut tobacco 2a, which is indicated as the instantaneous value of the mass signal, exceeds the first or second threshold value S +, S-, the spot determination circuit 13 determines that the portion is an overfilled portion ( (Hard spot) or underfilled portion (soft spot).

The defective product elimination unit 16 uses the spot judging circuit 13 to detect a locally overfilled portion (hard spot) and a partially underfilled portion (hard spot) of the cut tobacco 2a in each of the longitudinal portions of the bar-wound tobacco 2b. When the presence of the (soft spot) is detected, an exclusion signal is output in order to eliminate the cigarette cut out from the rod-shaped tobacco 2b including the portion.

Incidentally, the locally overfilled portion (hard spot) or underfilled portion (soft spot) of the cut tobacco 2a is caused, for example, by slipping of the wrapping paper 6 or adsorption of the cut tobacco 2a to the transfer belt (tobacco band) 3a. ,
This is caused by so-called dance. Incidentally, the overfilled portion (hard spot) of the chopped tobacco 2a causes an obstruction of the air flow in the tobacco and affects the quality of the tobacco. Insufficient filling (soft spot)
For example, it causes variation in the burning state during smoking, prevents uniform smoking, changes in burning rate, tar,
This will affect the amount of nicotine produced, and thus the taste. As described above, the hard spot and the soft spot are detected by the spot determination circuit 13 in order to eliminate the cigarette including the locally overfilled portion (hard spot) and the underfilled portion (soft spot). .

On the other hand, the second integrator 15 integrates the output of the detection circuit 12 to obtain the average filling amount of the shredded tobacco 2a wound on the rod-shaped tobacco 2b and its standard deviation. The average filling amount of the shredded tobacco 2a obtained by the second integrating circuit 15 is given to the filling amount control unit 17, and is used for feedback control of the filling amount. Specifically, according to the average filling amount detected as described above, for example, control of the amount of suction of the cut tobacco 2a on the transfer belt 3a in the suction section 3 (control of the negative pressure) and the height of the eclector disk 5 Adjustment (control of thickness) is performed.

According to the present apparatus configured as described above, in the process of continuously winding the cut tobacco 2a to manufacture the rod-shaped tobacco 2b, the filling amount of the cut tobacco 2a in one turn is appropriate. Not only can it be sequentially determined, but also whether or not a locally overfilled portion (hard spot) or underfilled portion (soft spot) exists in the winding can be efficiently inspected.

Furthermore, a pair of electrostatic electrodes 11a, 11b provided on the transport path of the rod-shaped tobacco 2b and opposed to each other with the rod-shaped tobacco 2b interposed therebetween is used.
Since the filling amount of the cut tobacco 2a at each part in the longitudinal direction of the rod-shaped tobacco 2b is measured as a change in the capacitance between 1b, there is no regulation on the handling of radiation unlike the conventional filling amount measurement using β-rays. Also, the electrostatic electrodes 11a,
By devising the electrode area of 11b, the resolution can be easily increased, and since there is no large noise mixed in as in the radiation method, the measurement accuracy can be easily increased. Furthermore, a complicated configuration such as a resonator for introducing microwaves is not required, and the configuration can be easily simplified. Therefore, a great practical effect can be obtained such that the filling amount of the cut tobacco 2a can be easily and efficiently measured.

The present invention is not limited to the above embodiment. In the embodiment, a pair of electrostatic electrodes 11a,
11b, the filling amount of the locally cut tobacco 2a of the stick-wound tobacco 2b is measured, and this is integrated to obtain a cigarette 1
The filling amount per book and the average filling amount were obtained. A pair of electrostatic electrodes having a length corresponding to one cigarette was prepared, and the filling amount per cigarette was directly measured by the electrostatic electrodes. It is also possible to ask for. Further, a spring member for pressing the pair of electrostatic electrodes against the peripheral surface of the rod-shaped cigarette may be incorporated to make the gap therebetween zero.
In this case, it is needless to say that the rod-shaped cigarette is not crushed by the spring force. In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[0043]

As described above, according to the present invention, a pair of electrostatic electrodes which are arranged opposite to each other with the above-mentioned rod-shaped tobacco continuously wound therebetween being used, and the electrostatic force between the pair of electrostatic electrodes is used. Since the filling amount of the cut tobacco in each portion in the longitudinal direction of the bar-wound tobacco is continuously measured from the capacity, the filling amount of the cut tobacco can be easily and accurately grasped, and for example, the filling amount control of the cut tobacco and the discharge of defective products. Practically great effects such as easy control can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a cigarette hoisting device.

FIG. 2 is a view schematically showing a state of a cut tobacco wound up by a wrapping paper.

FIG. 3 is a view showing a characteristic configuration of the cigarette hoisting apparatus according to one embodiment of the present invention, and is a view schematically showing a configuration of a cut tobacco filling amount detection portion in each longitudinal direction portion of a bar tobacco.

FIG. 4 is a configuration diagram of a capacitor bridge circuit showing a configuration example of a detection circuit.

FIG. 5 is a diagram schematically showing the principle of detecting the filling amount of the tobacco by a pair of electrostatic electrodes.

FIG. 6 is a diagram showing a specific configuration example of a detection circuit.

FIG. 7 is a timing chart showing a relationship between a filling amount signal and an integrated value thereof.

[Explanation of symbols]

 2a chopped tobacco 2b rod-shaped tobacco 11a, 11b electrostatic electrode 12 detection circuit 13 spot determination unit 14 first integration circuit 15 second integration circuit 16 defective product discharge unit 17 filling amount control unit

Claims (3)

[Claims] 1. A cut tobacco which is continuously supplied at a controlled filling amount is continuously rolled up with a long wrapping paper to form a rod-shaped tobacco having a predetermined thickness, and the rod-shaped tobacco is cut into predetermined lengths. And a pair of electrostatic electrodes opposed to each other with the rod wound tobacco continuously wound therebetween, and a capacitance between the pair of electrostatic electrodes. Measuring the moisture content and the water content in each of the longitudinal portions of the bar-wound tobacco from the change, and measuring means for measuring the filling amount of the cut tobacco according to the moisture content and the water content. Upper device. 2. The method according to claim 1, wherein the measuring unit comprises a capacitor bridge circuit using the pair of electrostatic electrodes as a single capacitor, and drives the capacitor bridge circuit by a plurality of AC signals having different frequencies. 2. The cigarette hoisting device according to claim 1, wherein an output change of the component is obtained. 3. An excess / deficiency determining means for determining, from an instantaneous value of a filling amount in each longitudinal direction portion of the chopped tobacco obtained by the measuring means, a local excess or deficiency in a filling amount in each longitudinal direction portion of the stick cigarette; 2. A cigarette hoisting apparatus according to claim 1, further comprising means for integrating the instantaneous value of the filling amount to obtain the filling amount of the shredded tobacco per cigarette.