JPH0126238Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a defect detection and elimination device for filtered cigarettes, and more specifically, the present invention relates to a defect detection and elimination device for cigarettes with a filter, and more specifically, a defect detection and elimination device for preventing detection errors when detecting the presence or absence of defects in the filter section. This invention relates to a detection and exclusion device.

[Conventional technology]

When manufacturing a filtered cigarette having a recessed filter, it is inspected to see if the recessed part of the filter has a predetermined size, rejecting defective products and sending only good products to the next process. In order to perform this inspection automatically, a carrier chain transports the filtered cigarette to an inspection position, where a recess sensor detects whether there is a defect in the recess of the filter, and then transports it to a defective product removal position. An apparatus has been proposed in which, at the defective product removal position, a defective product removal nozzle blows out defective products from a carrier chain into a rejection chute, and sends only good products to the next process.

Although the above-mentioned device is convenient because it does not require human labor, it has the problem of frequent detection errors. When we investigated the cause of this, we found that the filtered cigarettes would move vertically when they were transported to the inspection position by the carrier chain and used to detect defects in the filter recesses using the detector.

To solve this problem, for example, it would be possible to use a means of conveying filtered cigarettes that does not cause them to shake, but filtered cigarettes are lightweight and it is actually very difficult to prevent them from shaking. It is.

[Problem that the invention attempts to solve]

The present invention has been made in view of the above circumstances, and its purpose is to provide a defective detection and elimination device for filtered cigarettes that is free from detection errors.

[Means for solving problems]

In order to achieve the above object, the present invention includes a conveyance means for conveying filtered cigarettes to an inspection position and a defective product removal position, and a detector disposed at the inspection position to detect the presence or absence of defects in the filter part of the filtered cigarette. , a defective product removal means disposed at a defective product removal position and for removing a filtered cigarette in which a defective filter portion has been detected by the detector from a conveying means to a removal portion. The device has a suction hole, and when the detector detects the presence or absence of a defect in the filter portion of the filtered cigarette, the filtered cigarette is temporarily pressed against the conveying means by suction force to remove the filtered cigarette. It is characterized by being provided with a shake prevention means for preventing shake.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment in which the present invention is applied to a defect detection and elimination device for cigarettes with a recessed charcoal filter. In the figure, reference numeral 1 indicates the underframe of the apparatus, 2 is a carrier chain, 3 is a turning drum, 4 is a transfer belt, 5 is a recess sensor, 6 is a chacoal sensor, and 7 is a defective product removal nozzle.

The carrier chain 2 is provided from one end (right side in the drawing) to the other end (left side in the drawing) of the underframe 1, and a turning drum 3 is provided on one end of the underframe 1.
is arranged, and a transfer belt 4 is arranged at the other end. Further, between one end and the other end of the underframe 1, along the carrier chain 2, there are a recess sensor 5 and a charcoal sensor 6, which are the detection parts of the filter part F of the filter-equipped cigarette T, and a recess sensor 6, which is a detection part of the filter part F of the filter-equipped cigarette T. A defective product removal nozzle 7 is arranged to remove filtered cigarettes T detected to be defective by the sensor 5 and the smoker sensor 6.

For cigarette T with filter, turning drum 3
Therefore, the filter part F is unidirectional (recess sensor 5
The recess sensor 5 and the defective product removal nozzle 7 are transferred from the turning drum 3 to the carrier chain 2 by the carrier chain 2. It is conveyed to the other end side through the arrangement part of the sensor 6 and defective product removal nozzle 7, and transferred from the carrier chain 2 to the transfer belt 4 at the other end side and sent to the next process.

At the inspection position by the recess sensor 5 and the charcoal sensor 6, between the two chains 2a and 2a of the carrier chain 2 (see Figures 2 to 4), there is a vibration prevention device that prevents the filter-equipped cigarette T from shaking. A suction hole 8a of the means 8 is arranged. This suction hole 8a is connected to a vacuum pump (not shown), and the air suction force temporarily presses the filtered cigarette T against the semicircular depression 21a of the chain 2a, causing the filtered cigarette T to move up and down. prevent the

The recess sensor 5 is a reflection type detector as shown in FIG. The reflected light is reflected by the acetate piece A to the same side surface 5a as the light projecting part 5b.
The light is received by the light receiving section 5c arranged in the control section 9 (second
(see figure).

The control unit 9 uses the signal from the recess sensor 5 to determine whether the recess R is smaller than a predetermined size or if there is no recess R and the acetate piece A is the filter part F.
The product is detected as a defective product when the recess R is filled to the end face, and when the recess R has normal dimensions and the acetate piece A and the acetate piece CA containing charcoal have been replaced.

The charcoal sensor 6 is a transmission type detector as shown in FIG. The light transmitted through A and the acetate piece CA containing charcoal is received by a light receiving section 6d disposed on the side surface 6c of the main body opposite to the side surface of the filter F, and a signal is output to the control section 9.

The control unit 9 uses the signal from the charcoal sensor 6 to determine whether the recess portion R is larger than a predetermined size, the acetate piece A, and the charcoal-containing acetate piece.
Those without CA and those without acetate piece A are detected as defective products.

By using the recess sensor 5 and the chacoal sensor 6 together in this way, it is possible to completely detect a defect in the filter section F (recess section R).

The defective product removal nozzle 7 is connected to a compressed air source 12 via a pipe 11, and the pipe 11 is provided with a solenoid valve 13 that is opened and closed by a control section 9. When the control unit 9 receives a synchronization signal from a synchronization device 14 that outputs a signal in synchronization with the drive mechanism (not shown) of the carrier chain 2, the control unit 9 activates the recess sensor 5.
A signal from the charcoal sensor 6 is input to determine whether the filter portion F (recess portion R) is defective, and an open signal is output to the solenoid valve 13 when a defect is detected.

A guide 15 is provided on the underframe 1 at a position facing the recess sensor 5 and the chacoal sensor 6 to keep the distance between the filtered cigarette T and the recess sensor 5 and the chacoal sensor 6 constant. It is being Further, a rejection chute 16 for receiving filtered cigarettes T blown from the carrier chain 2 is provided on the underframe 1 at a position facing the defective product rejection nozzle 7.

Note that 17 in Figures 1 and 2 is the upper guide;
18 is a reversing bar of the turning drum 3, 19 is an arcuate guide of the turning drum 3, and 20 is an alignment belt. Further, 21 in FIGS. 3 and 4 is a chain rail of the carrier chain 2.

Next, the operation of the above embodiment will be explained.

The filtered cigarettes T whose filter portions F are aligned in one direction by the turning drum 3 are transferred from the turning drum 3 one by one in a parallel state to the carrier chain 2, and the carrier chain 2 moves them to an inspection position by the recess sensor 5. transported. When the filtered cigarette T comes to this position, it is pressed against the recess 21a by the air suction force of the suction hole 8a of the vibration prevention means 8, and vertical vibration is prevented. At this time, the distance between the filtered cigarette T and the recess sensor 5 is maintained constant by the guide 15. In this state, light is emitted from the light emitting part 5b of the recess sensor 5, reflected light is incident on the light receiving part c, and a signal from the recess sensor 5 indicates that the filter part F (recess part R) is defective. The presence or absence of is detected.

Next, the carrier chain 2 transports it to the inspection position by the Charcoal sensor 6 . When moving from the inspection position by the recess sensor 5 to the inspection position by the charcoal sensor 6, the filtered cigarette T is again pressed against the recess 21a by the air suction force of the suction hole 8a at the inspection position, preventing vertical shaking. be done. At this time as well, the guide 15 maintains a constant distance between the filtered cigarette T and the charcoal sensor 6 (light projecting section 6b). and,
In this state, light is emitted from the light emitting part 6b of the Charcoal sensor 6, and transmitted light is incident on the light receiving part 6d, and the signal from the Charcoal sensor 6 indicates whether there is a defect in the filter part F (recessed part R). is detected.

After the inspection is performed in this manner, the carrier chain 2 transports the defective product to a removal position by the defective product removal nozzle 7. If a defect is detected in either the recess sensor 5 or the charcoal sensor 6, when the defective filtered cigarette T comes to the removal position, the control unit 9 outputs an open signal to the solenoid valve 13. The solenoid valve 13 opens, compressed air is blown from the defective product removal nozzle 7 onto the defective filtered cigarette T, and the filtered cigarette T is blown from the carrier chain top 2 to the removal chute 16. Then, only good products are transferred from the carrier chain 2 to the transfer belt 4.

FIG. 5 shows the defective product rejection rate, and FIG. 6 shows the non-defective product erroneous rejection rate. As is clear from the figure,
By providing shake prevention means 8, the rejection rate of defective products can be increased to 100.
%, and the false rejection rate of non-defective products can be reduced to 0.04%.
Even if the recess sensor 5 and the chacoal sensor 6 are installed, if the shake prevention means 8 is not used, detection errors will occur due to shake, and the rejection rate of defective products will remain at 82.5%, and the false rejection rate of good products will be as high as 3.3%. Become.

[Effect of idea]

As explained above, the present invention has a suction hole, and when the detector detects the presence or absence of a defect in the filter part of a filtered cigarette, the filtered cigarette is temporarily held against the conveying means by suction force. Since it is equipped with a shake prevention means to prevent the shake of filtered cigarettes, it is possible to eliminate detection errors, which eliminates problems such as sending defective products to the next process and rejecting good products by mistake. There is no. Further, a simple carrier chain can be used as a means for conveying filtered cigarettes.

[Brief explanation of drawings]

Figure 1 is a side view of the defect detection and elimination device of the present invention.
2 is a plan view of the same, FIG. 3 is a sectional view taken along the - line in FIG. 2, FIG. 4 is a sectional view taken along the - line in FIG. 6th
The figure is a graph showing the performance of rejecting good products by mistake. 2...Carrier chain, 5...Recess sensor, 6
...Chacoal detector, 7...Defective product exclusion nozzle, 8
... Shake prevention means, 8a... Suction hole, 9... Control section.

Claims (1)

[Scope of utility model registration request] a conveying means for transporting filtered cigarettes to an inspection position and a defective product removal position; a detector disposed at the inspection position to detect the presence or absence of a defect in the filter portion of the filtered cigarette; and a detector located at the defective product removal position A defective detection and removal device for filtered cigarettes, comprising a defective product removal means for removing filtered cigarettes in which a defective filter portion has been detected by a detector from a conveying means, the device having a suction hole; When detecting the presence or absence of a defect in the filter portion of a filter-equipped cigarette, the filter-equipped cigarette is provided with a vibration prevention means for temporarily pressing the filter-equipped cigarette against the conveying means to prevent the filter-equipped cigarette from shaking. This is a defect detection and elimination device for cigarettes with a filter.