JP3506990B2 - Cigarette manufacturing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the presence or absence of a pin pole defect in a long paper roll in which a cut tobacco continuously supplied in a controlled manner is continuously rolled in a bar shape in the longitudinal direction. And easily and accurately detect the seam of the wrapping paper and the wrapping part less than the specified width , and reliably detect the cigarette wound up by the wrapping part including the pinhole defect or the wrapping seam or the narrow wrapping part. The present invention relates to a cigarette manufacturing apparatus capable of improving its manufacturing quality. 2. Related Art When cigarettes are manufactured, chopping is performed.
It is important to increase the production quality of cigarettes which are wound up continuously at the defective portion of the wrapping paper including the pinhole defects or the seam of the wrapping paper in which the cigarette is continuously rolled up . [0003] Cigarettes are generally formed by continuously winding chopped tobacco in a lengthwise direction on a long paper roll to form a so-called rod-shaped tobacco. It is manufactured by cutting cigarettes at predetermined lengths. Also, a filter is attached to one end of a cigarette of a predetermined length cut from a rod-shaped cigarette. In particular, the production processing speed of such cigarettes has tended to be further increased, and the winding speed of cut cigarettes by wrapping paper has also become extremely high. [0004] The quality of the wrapping paper affects the flow of air in the cigarette and affects not only its flammability but also its taste. For example, even if there is a thin portion or a pinhole having a diameter of about 1 mm due to so-called skim unevenness in the wrapping paper, the flow of air in the cigarette during smoking tends to change. Therefore, when producing high quality cigarettes, it is necessary to sufficiently control the quality of the wrapping paper. Incidentally, the above-mentioned wrapping paper is long, for example, about 27 mm in width, and is provided in a state of being wound as a roll. Then, the wrapping paper is run at a high speed through a predetermined transport path while being rewound from the roll, and is continuously supplied to a cigarette manufacturing apparatus, particularly, a winding portion (winding tube portion) of the cut tobacco. Therefore, it is necessary to reliably detect a pinhole defect existing in the wrapping paper in real time while the wrapping paper is running at a high speed. At this time, since the paper roll tends to sway along with the high-speed travel, it is generally difficult to detect pinhole defects with high precision. If the run-out is suppressed, it is unavoidable that the configuration of the wrapping paper supply unit becomes considerably large and complicated. When cigarettes are manufactured continuously,
Since the length of the wrapping paper is limited, the leading end of the next wrapping paper is overlapped and connected to the end of the wrapping paper, thereby continuously supplying the wrapping paper. However, the cigarette rolled up with the paper roll portion including the seam is not visually pleasing even though there is no problem in quality, and there is a problem in making this a product. For this reason, it is important to surely remove the cigarette wound up at the wrapping portion including the pinhole defect and the seam from the production line. The present invention has been made in view of such circumstances, and a purpose thereof is to easily and reliably detect a pinhole defect or a seam thereof in a long paper roll supplied at a high speed. Further, it is an object of the present invention to provide a cigarette manufacturing apparatus capable of reliably removing cigarettes wound up at a wrapping portion including a pinhole defect or a wrapping portion of a wrapping paper and improving the manufacturing quality. At the same time, the present invention
Shigare rolled up in a narrow part less than the specified width of paper
Cigarettes that can reliably eliminate cigarettes
It is to provide a manufacturing apparatus. [0008] In order to achieve the above-mentioned object, the present invention provides a rod-shaped cigarette in which a cut tobacco continuously supplied in a controlled manner is continuously wound up in a longitudinal direction with a long paper roll. The present invention relates to a cigarette manufacturing apparatus for manufacturing a cigarette by cutting the bar-wound tobacco at predetermined lengths, and in particular, (1) provided in a supply path of the cigarette paper used for winding the cut tobacco. An optical sensor for irradiating an area excluding both edges of the wrapping paper and receiving light transmitted through the wrapping paper ; and (2) both edges of the wrapping paper provided in the supply path of the wrapping paper.
Of the light irradiating the wrapping paper
A pair of auxiliary light sensor for receiving, (3) the amount of received light obtained by the optical sensor is first threshold
When the value exceeds the value V ref1 , the
A first comparator for determining that pinhole defects are present, (4) the amount of received light obtained by the optical sensor is a second threshold
When the value falls below the value V ref2 (<V ref1 ),
And (5) a second comparator that determines each of the pair of auxiliary light sensors.
When the sum of the received light amounts exceeds the third threshold value Vref3 ,
A third comparator that determines that the paper is narrower than a specified width
If, (6) pins of the paper wrapper in the first and second comparators
When a hole defect or seam is detected, and / or
Indicates that the narrow portion of the wrapping paper is detected by the third comparator.
And a cigarette quality inspection unit for outputting the detection result as a cigarette elimination command in association with the winding operation of the cigarette by the cigarette. That is, according to the present invention, the amount of light irradiated on the wrapping paper and transmitted through the wrapping paper increases when the wrapping paper passes through a pinhole defect. It is focused on the fact that there is less in the seam that is connected by superimposing and the pinhole defect is detected from the change in the amount of light received by the optical sensor, and the seam portion is reliably detected, and these pinhole defects and seams are detected. When detected, in order to eliminate the cigarette wound up at the wrapping portion including the pinhole defect or the seam, the detection result is output as a cigarette elimination command in connection with the winding operation of the cut tobacco by the wrapping paper. It is characterized by having. Further , when the width of the wrapping paper is a specified width,
Is that the paper running at high speed is slightly displaced in the width direction.
Also, the sum of the received light amount detected by the auxiliary sensor changes.
Noting that there is no
When the sum of the light amounts exceeds a predetermined threshold,
It is determined that the width of the wrapping paper has become narrow, and
Characterized by eliminating wound cigarettes
I have. In addition to simplifying the configuration of the defect inspection unit for the wrapping paper, pinhole defects in the wrapping paper and their joints , and furthermore,
The present invention is characterized in that the narrow portion is reliably detected to enhance the cigarette production quality. Hereinafter, a cigarette manufacturing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
Briefly describing the overall configuration of the cigarette manufacturing apparatus, the cigarette manufacturing apparatus generally includes an endless garniture tape 2 which is driven at a controlled speed by a main shaft 1 as shown in FIG. Using the long winding paper P continuously supplied from the roll R on the garniture tape 2, the cut tobacco Tk supplied from the notch feeding device 4 is formed into a rod shape mainly using the winding tube portion (paper winding portion) 3 provided. Is configured to be continuously wound up. The chopping feeder 4 includes a chimney section 6 for pneumatically conveying the chopped tobacco Tk supplied into the hopper 5 and a gap between the chimney section 6 and the winding tube section 3. And an endless tobacco band 7 running in synchronization with the rotation of the main shaft 1. The tobacco Tk cut on the surface of the tobacco band 7 is adsorbed and conveyed to the winding tube section 3. The suction of the cut tobacco Tk on the front surface of the tobacco band 7 is performed by supplying a negative pressure to the back surface of the tobacco band 6 by the suction unit 8. In the middle of the traveling path of the tobacco band 7 from the chimney portion 6 to the winding tube portion 3 of the chopping feeding device 4, an eletter disk 9 which operates in synchronization with the rotation of the main shaft 1 is provided. ing. This eletter disk 9
Is scraped off the surplus of the cut tobacco Tk that is adsorbed on the surface of the tobacco band 7 and conveyed to the winding tube portion 3, thereby controlling the amount of adsorption (layer thickness) and being wound up by the winding tube portion 3. It plays a role in adjusting the filling amount (measurement amount) of the cut tobacco Tk in the stick-wound tobacco Tr. On the other hand, a rod-shaped tobacco Tr formed by continuously winding up the cut tobacco Tk in the winding tube section 3 using a long wrapping paper P is led to the cutting section 10 and the cutting knife 10
It is cut every predetermined length by a. This cutting knife 10a
Is driven in association with the winding length of the rod-shaped cigarette Tr in synchronization with the rotation of the main shaft 1, whereby the rod-shaped cigarette Tr is so-called double-wound having a length of, for example, two cigarettes. It is cut as tobacco Tw and supplied to the filter attachment unit 11 which is the next step. Then, in the filter attachment portion 11, the double cigarette Tw is bisected, and a filter is attached to an end thereof to manufacture a cigarette. At the outlet of the winding tube section 3, there is provided a quantity sensor 12 comprising, for example, a radiation detector.
Shredded tobacco Tk at each part in the longitudinal direction of bar-wound tobacco Tr
Is continuously detected. Based on the filling amount (filling density) of the cut tobacco Tk detected by the sensor 12, the weight determining unit 13 monitors, for example, the total filling amount of the cut tobacco Tk per cigarette and the filling density of the cut tobacco Tk in each of the longitudinal portions. Then, the excess or deficiency is determined. Then, when an insufficiently filled or excessively filled portion of the cut tobacco Tk is detected, the filter attachment unit 11 removes the cigarette cut out from the stick-wound tobacco Tr including the portion. Defective product removal unit 14 provided
Is issued to the exclusion order. In the cigarette manufacturing apparatus constructed as a whole as described above, the present invention is characterized in that, in particular, a long roll of paper P is continuously supplied from the roll R to the tube winding portion 3. An optical sensor 21 for detecting the presence or absence of a pinhole defect in the wrapping paper P and a joint thereof is provided in the middle of the wrapping paper transport path, and the wrapping paper quality inspection unit 22 detects the output (light reception amount) from the optical sensor 21. Wrapping paper P
The point is to monitor the quality and condition. When a pinhole defect is detected in the wrapping paper P, or when a seam of the wrapping paper P is detected, the pinhole defect or the seam in the cigarette cut out in order from the rolled cigarette Tr sequentially wound up by the wrapping paper P is included. In order to eliminate cigarettes wound up at the rolled paper portion, the roll paper quality inspection unit 15 is configured to give a rejection command to the defective product rejection unit 14. The optical sensor 21 includes, for example, a pair of light emitting portions 21a and a light receiving portion 21b which are opposed to each other with a predetermined gap between both sides of the wrapping paper P as shown in FIG. The light receiving unit 21b receives the light emitted from the light guide 21a and transmitted through the wrapping paper P, and outputs a signal corresponding to the amount of received light.
The light emitter 2 is formed of a lamp that irradiates light over a predetermined width (for example, 25 mm) to a central region excluding both edges of the wrapping paper P, for example. The light receiver 23 is a so-called line sensing type light receiving element that has a light receiving surface extending in the width direction of the wrapping paper P and receives light transmitted through the wrapping paper P. Instead of the line sensing type light receiving element, a plurality of light receiving elements having a light receiving surface of a predetermined size are replaced with a light receiving area so that the light receiving area is not interrupted in the width direction of the wrapping paper P. It is also possible to use those arranged in a staggered manner such that a part of the regions overlaps each other. In this case, although it depends on the size of the light receiving area of each light receiving element, if the size is about 2.5 mm square, the transmitted light in substantially the entire width of the wrapping paper P is detected using about 15 light receiving elements. What should I do? That is, the optical sensor 21 is for detecting the state of the wrapping paper P in a region excluding both edges of the wrapping paper P, that is, for detecting the presence or absence of a pinhole defect and its joint as described later. As shown in FIG. 3, when the wrapping paper P is fed through the center of the transport path, the width of both edges of the wrapping paper 1 is 1 mm.
Are provided so as to face the central region excluding the region (1). Even if the wrapping paper P is shifted by about 1 mm in the width direction due to the conveyance deflection, the optical sensor 21 is set so that the main surface (central region) of the wrapping paper P can always be reliably detected. I have. Further, in the cigarette manufacturing apparatus according to this embodiment, the cigarette manufacturing apparatus according to the second embodiment is used to inspect the edge of the wrapping paper P for defects.
Two auxiliary light sensors 22a and 22b are provided. These auxiliary light sensors 22a and 22b are basically configured in the same manner as the above-described optical sensor 21. However, at the same position in the supply direction of the wrapping paper P, the area of both edges of the wrapping paper P is In order to perform sensing, respectively, the sensing areas A and B are arranged so as to include, for example, about half of the area having a width of 1 mm at both edges of the wrapping paper P. Even if the wrapping paper P is displaced by about 1 mm in the width direction due to the conveyance runout, it is set so that both edges of the wrapping paper P can be reliably detected.
As described later, a portion (narrow width defect) where the width of the wrapping paper P is narrow is detected. A signal corresponding to the amount of light (amount of light received) detected by the optical sensor 21 and transmitted through a region (principal surface) excluding both ends of the wrapping paper P is transmitted through a sensing amplifier 23 to the The signals are supplied to the first and second comparators 24 and 25, respectively, and are compared with predetermined thresholds Vref1 and Vref2. The first comparator 24 outputs the output of the optical sensor 21 (the amount of received light).
Is greater than the threshold value Vref1, it is determined that a pinhole defect exists in the wrapping paper P as described later, and an exclusion command signal is issued to eliminate the cigarette wound up in the wrapping paper portion including the pinhole defect. .
When the output (light reception amount) of the optical sensor 21 falls below the threshold value Vref2, the second comparator 25 determines that the seam of the wrapping paper P has been detected as described later. When this determination result is obtained, an exclusion command signal is issued to eliminate cigarettes wound up at the wrapping paper portion including the seam. On the other hand, a pair of auxiliary light sensors 22a,
The signal corresponding to the amount of received light detected through both edges of the wrapping paper P by the sensor amplifier 26a,
After being amplified through the respective circuits 26b, they are added by the adder 27. And the added signal (added value of received light amount)
Is supplied to a third comparator 28 and is compared with a predetermined threshold value Vref3. This third comparator 28
Is the sum (addition value) of the received light amounts detected by the pair of auxiliary light sensors 22a and 22b, respectively.
When f3 is exceeded, it is determined that the width of the wrapping paper P does not satisfy the specified width as described later. Regarding the cigarette wound up in the narrow portion of the wrapping paper P, it is assumed that the winding up is incomplete, and an exclusion command signal is issued to eliminate the cigarette wound up in the narrow portion. Has become. Incidentally, these first to third comparators 2
The exclusion command signals respectively issued from 4, 25 and 28 are
It is output to the above-described defective product elimination unit 14 via the OR gate 29. Especially from the OR gate 29 to the defective product elimination unit 1
4 is synchronized with the winding operation of the cut tobacco Tk by the wrapping paper P and the timing of cutting out and sending out the cigarette from the rod-wound tobacco Tr, and the wrapping paper portion including the defective portion detected as described above. Is performed by performing a predetermined delay control so that the timing at which the cigarette wound up at the position is guided to the exclusion position. Here, the amount of light transmitted through the wrapping paper P detected by the optical sensor 21 will be described. If there is no pinhole defect in the wrapping paper P, a constant amount of light emitted from the light emitting unit 21a to the wrapping paper P Is substantially constant because it only receives a certain amount of attenuation due to the transmission of the wrapping paper P. Moreover, since the optical sensor 21 receives only the light transmitted through the central region excluding both edges of the wrapping paper P, it receives a substantially constant amount of light irrespective of the fluctuation (shift) in the width direction of the wrapping paper P. . However, the wrapping paper P has a diameter of 1 mm, for example.
When a pinhole defect having a minute size exists, when the pinhole defect passes through the sensing area of the optical sensor 21, a part of the light emitted from the light emitting unit 21a passes through the pinhole. The amount of light transmitted through P increases. Therefore, as illustrated in FIG. 4, the amount of light received by the light receiving unit 21b temporarily increases due to the presence of the pinhole defect. The above-described first comparator 24 determines the change in the amount of light received by the optical sensor 21 in this manner by the threshold V
By discriminating based on ref1, the presence or absence of a pinhole defect on the wrapping paper P in the sensing area is detected. On the other hand, at the joint where the leading end of the next wrapping paper P is overlapped and connected to the rear end of the wrapping paper P, since the wrapping paper P is doubled, the light emitted from the light emitting portion 21a is at least It is transmitted through the joint part after being attenuated twice. As a result, the amount of light transmitted through the wrapping paper P decreases, and the amount of light received by the light receiving unit 21b temporarily decreases as illustrated in FIG. The above-described second comparator 25 determines the change in the amount of light received by the optical sensor 21 in this manner by the threshold Vref2.
, The wrapping paper P in the sensing area
The upper seam has been detected. On the other hand, a pair of auxiliary light sensors 22a and 22b for detecting information on both edges of the wrapping paper P receive light that is not blocked by the edges of the wrapping paper P, respectively. Therefore, as schematically shown in FIGS. 5A, 5B and 5C, even if the wrapping paper P is shifted by Δ in the width direction, the area where light is blocked by one edge of the wrapping paper P is increased. However, since the area where light is blocked by the other edge is reduced, the amount of light blocked by both edges is not changed. Therefore, when there is no defect in the wrapping paper P, the sum K of the light reception amounts Sa and Sb by the pair of optical sensors 22a and 22b becomes constant regardless of the displacement of the wrapping paper P in the width direction. However, as shown in FIG.
When a defect whose width is partially narrowed is present, the amount of light blocking is reduced accordingly. Then, due to the displacement of the wrapping paper P in the width direction, the respective light reception amounts Sa, Sb themselves by the optical sensors 22a, 22b change. However, since the amount of received light also changes due to the change in the width direction of the wrapping paper P, it is not possible to catch a defect at the end of the wrapping paper P as it is. However, as described above, the received light amounts Sa, Sb
Paying attention to the sum K, since it should be originally constant as described above, the sum (Sa + Sb) of the received light amount is compared with a predetermined threshold value Vref3 using the third comparator 28 described above. Accordingly, it is possible to detect the presence or absence of a defect at both edges of the wrapping paper P. In particular, the presence or absence of the defect can be detected without being affected by the displacement in the width direction due to the high speed traveling of the wrapping paper P. Thus, according to the cigarette manufacturing apparatus configured as described above, the continuous long paper roll P
For example, a minute pinhole defect having a diameter of, for example, about 1 mm can be detected with high accuracy and surely using the optical sensor 21.
Can be reliably detected. Further, the narrow defect of the wrapping paper P can be reliably detected by using the pair of auxiliary sensors 22a and 22b. In particular, while running the wrapping paper P at a high speed and supplying it to the winding portion (winding tube portion 3), pinhole defects, seams, and narrow width defects can be easily and reliably detected without being affected by the runout. , And a cigarette having a defect in the wrapping paper P can be reliably removed. Therefore, defective products are reliably eliminated without sacrificing cigarette productivity due to high-speed winding.
The production quality of the final cigarette can be effectively improved. Moreover, as described above, the general-purpose optical sensor 2
Since defects can be detected using a processing circuit having a simple configuration in which the light receiving amounts are effectively distinguished from predetermined threshold values Vref1, Vref2, and Vref3, the practical advantages are greatly increased. It is. The present invention is not limited to the above embodiment. For example, a defect at both edges of the wrapping paper P is an area where both edges are overlapped with each other by gluing, and pinholes are extremely rarely generated in the area. It is also possible to simplify the configuration, in particular, the wound paper defect detector. The number and arrangement of the light receivers of the optical sensor 21 can be variously changed. In addition, the present invention can be variously modified and implemented without departing from the gist thereof. As described above, according to the present invention, the light that is provided in the supply path of the paper wrapper and is applied to a region except for both edges of the paper wrapper and transmitted through the paper wrapper to the optical sensor. Receive
Since the presence or absence of a pinhole defect and the seam of the wrapping paper are determined based on the change in the amount of received light obtained by the optical sensor, the pinhole is not affected by the swing in the width direction of the wrapping paper running at a high speed. Defects and their joints can be detected simply, reliably and in real time. In addition, since the pinhole defect and its joint can be detected by effectively utilizing one optical sensor, the structure can be simplified, and it can be easily incorporated into the paper supply path. Can be In addition,
Irradiated at both ends, not blocked by wrapping paper
Monitors the sum of the amount of light received by the auxiliary sensor that receives each light
To determine whether or not the wrapping paper is
Therefore, when the roll paper running at high speed oscillates,
Can easily and narrowly detect the narrow part of the wrapping paper.
You. When a pinhole defect or a seam of the wrapping paper is detected and / or a narrow portion of the wrapping paper is detected.
When the cigarette is issued, the detection result is output as a cigarette elimination command in association with the winding operation of the cigarette by the cigarette paper. Therefore, it is possible to achieve a great effect that the production quality can be improved without sacrificing the winding speed of the cigarette.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a cigarette manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of the configuration of a paper roll defect detection unit in the cigarette manufacturing apparatus according to one embodiment of the present invention. FIG. 3 is a diagram showing a schematic configuration of an optical sensor incorporated in a defect detection unit. FIG. 4 is a diagram showing a change in the output (light reception amount) of the optical sensor due to a pinhole defect of the wrapping paper and its joint. FIG. 5 is a diagram for explaining an operation of detecting a defect at both edges of the wrapping paper by a pair of auxiliary light sensors incorporated in the defect detection unit. [Description of Signs] P Rolled paper Tk Shredded tobacco Tr Rolled tobacco 14 Defective product rejection unit 21 Optical sensors 22a, 22b Auxiliary optical sensors 24, 25, 28 Comparator 27 Adder 29 OR gate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A24C 5/345 A24C 5/34 A24C 5/14 A24C 5/18

Claims (1)

(57) [Claims 1] A tobacco that is continuously supplied in a controlled amount is wound up continuously in a longitudinal direction with a long wrapping paper to form a rod-shaped tobacco, and the rod-shaped tobacco is subjected to a predetermined method. In a cigarette manufacturing apparatus for manufacturing a cigarette by cutting each length, the cigarette is provided in a supply path of the cigarette paper provided for winding the tobacco, and light applied to a region excluding both edges of the cigarette is transmitted through the cigarette paper. An optical sensor for receiving the light, and a light sensor provided at a supply path of the wrapping paper,
Receives light that is not blocked by the wrapping paper
A pair of auxiliary light sensor, the light-receiving amount obtained by the light sensor is a first threshold V re
When greater than f1, a first comparator for determining that pinhole defects in a region excluding the edges of the paper wrapper is present, the amount of received light obtained by the optical sensor is a second threshold value V re
When f2 (<V ref1 ), it is the seam of the wrapping paper.
A second comparator for judging that the light is received by the pair of auxiliary light sensors.
When the sum of the quantities exceeds a third threshold value Vref3 , the wrapping paper is regulated.
A third comparator for determining that the width is smaller than a predetermined width, and a pinhole of the wrapping paper by the first and second comparators.
When a defect or seam is detected and / or
The third comparator detects a narrow portion of the wrapping paper.
A cigarette quality inspecting unit for outputting a result of the detection as a cigarette elimination command in association with the winding operation of the cut cigarette by the cigarette paper.