JPS60195481A - Detecting method and detecting device - Google Patents

Abstract

PURPOSE:To improve a quality control in case of packing by analyzing whether two kinds of metallic and non-metallic objects being in the inside of an object to be detected moving at a constant speed exist or not by making them contact by pressing to plural detecting ends for detecting a prescribed detecting distance. CONSTITUTION:A titled device is constituted of a transfer means 9 for feeding out an object 1 to be detected, a detecting means 4 for detecting whether a metallic object 3 and a non-metallic object 2 in the object to be detected 1 exist or not, an encoder 19, a converting means 7 and a removing means 8. Also, the detecting means 4 is provided with two detecting ends 5 for detecting a thickness of the non-metallic object 2 and a prescribed detecting distance. A converting means 6 executes a control so as to send out a pulse signal from the encoder 19 to a control means 7 only in case a signal from the detecting end 5 is satisfied, and also sends out a signal of removal to the removing means 7 in case a pulse count corresponding to a length 12 and 13 of the object 2 and 3 to be detected is not obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a detection method and a detection S! that can reliably detect the presence or absence of metallic and non-metallic objects contained in an object to be detected. ! Regarding i-placement.

Nowadays, products containing sachets and the like are well known. For example, in the case of instant noodles packaged in bags, additional ingredients such as soup stock are often placed in the packaging bag along with the noodles.

With this type of instant noodles, it is necessary to confirm whether additional additives have been added before the product is put on the market.

By the way, if the packaging bag is transparent or translucent, the presence or absence of additional accessories can be easily confirmed with the naked eye. However, if the packaging bag is made of a material that cannot be seen through to the inside, the attachments cannot be confirmed with the naked eye, but must be confirmed by touch, which is a complicated and time-consuming process. Because it requires labor, if the product is produced on a T-site and then on a bell, it is difficult to produce the product.
Therefore, in the industry, some attempts have been made to mechanically detect the presence or absence of accessories. In some cases, metal detectors are used.

However, the additives for instant noodles are not limited to metal (11), but also non-metal (11) such as synthetic resins, and considering the taste and shelf life of the product, metal (11) and non-metallic (11) additives are used. It is often seen that different contents are placed separately in the packaging bag.Especially when two types of accessories are used, the packaging bag must be manually removed after the honeymoon. This is more complicated, and when detecting these mechanically, it is difficult to detect them mechanically.
It came with many problems.

Conventionally, in the production of instant noodles in bags, for example, the following method was used to detect two types of attached bags, metallic and non-metallic.

That is, 1) First, a phototube detector is used to detect the presence or absence of non-metal (II) attachments, 2) Next, the lees and attachments are sealed in a packaging bag, and 3) This is followed by a metal detector. This is a method for detecting metallic additives.

However, this method had many problems as follows. In other words, Detection using a phototube detector involves placing a non-metallic 1i additive on top of the metallic additive, for example, on noodles, and detecting the non-metallic additive at the detection end of the detector. Shine the light Q-1 toward the accessory, and do J to catch the light that is reflected back. In this case, if there is a non-metallic additive,
The light emitted from the detection end hits the non-metal VL additive and is diffusely reflected back to the detection end (in this case, the light from the detector is
K” signal is issued).

On the other hand, non-metallic additives are 1. In this case, the light hits the metal additive directly, moves in a direction different from the direction of the detection end, and does not return to the detection end.
NO” signal is issued).

However, according to this method, even though there is no non-metallic additive, a malfunction may occur in which the light returns to the detection end due to the metallic additive and an "OK" signal is issued. On the other hand, even though there are non-metallic ('I) attachments, the non-metallic attachments are flat, etc.
If the light directly hits the metal additive, the same condition will occur (<1 at the detection end) without AI.
A signal of "NO" is output? An error occurs.

There is a very high probability that the above malfunction will occur, especially in the former case, the detected object will be 'OK' and will be sent to the next culm. Therefore, the actual 1,711 problems require 1.1 people.

(2) Detection of non-metallic additives and metal +1 additional additives is carried out separately, and the operation for detection is extremely complicated. In addition, in order to detect non-metallic accessories, it is necessary to detect the non-detectable items in a naked state before putting them into the packaging bag.
Even if it is detected as ``, additional items may fall off during transportation up to one culm of packaging.

An object of the present invention is to provide a detection method and a detection device used therein that do not cause the above-mentioned J/iH problems. Specifically, metallic and non-gold Ii! inside the object to be detected. To provide a detection method and a detection device capable of reliably and simultaneously detecting MI movement 1'+, etc. of two types of objects such as bamboo from the outside of the object to be detected. There is a particular thing.

In order to achieve the above-mentioned object, the present inventors particularly focused on 4- a method and apparatus for detecting instant noodles in bags;
As a result of repeated various experiments and prototype production, we came to the following 4r knowledge (9).

That is, the object to be detected, which contains metallic and non-metallic objects, is applied to the detection means while moving at a constant speed. In this case, the detection means shall include 1) a detection end with a detection distance of 1 that exceeds the thickness of the non-metallic object, and σ2) detection ends with b detection distances that do not exceed the thickness of the non-metallic object. Zuru. - When the detection means described in F is brought into contact with the object to be detected through a non-metallic object as if it were a metal object,
If both metallic and non-metallic objects are inside, the detection end of 1) is 'ON', and the detection end of 2) is 0.
The state becomes "F". Furthermore, since the object to be detected is moving at a constant speed, the above state continues for a certain period of time depending on the quality of the non-metallic or metallic object. On the other hand, if either or both of the metallic and non-metallic objects are not contained, the detection end 1) and ? ) is in a different state from the above.

Therefore, according to the above method, ON10F of the detection end
By detecting the F state for a certain period of time n, I learned that the number of malfunctions in this case is 1) extremely low.

Furthermore, in the above-mentioned detection method, the present inventors used an encoder to emit a pulse signal of a predetermined output according to the movement of the detected object, and this pulse signal was transmitted to the 0N10FF of the above-mentioned detection end. Combined with the signal that conveys the status! [
It has been found that the presence or absence of metallic and non-metallic objects in the object to be detected can be detected more reliably by analysis and comparison.

The present invention has been made based on the above findings, and its gist is to detect objects including metal and non-metallic objects with a detection distance exceeding the thickness of the non-metallic 1Q object. The edge and the JIE metal 1/1 object 14 (7') If the detection distance does not exceed I'm, connect the detection end to the detection means through the non-metallic object. This is a detection method characterized by detecting the presence or absence of metallic and non-metallic objects within an object to be detected by analyzing the detection state.

The present invention will be described in detail below.

The object to be detected in the detection method of the present invention refers to an object containing metal (/l) and non-metallic substances inside a packaging bag, such as that produced by instant noodles in a bag. Jru.

The detection method of the present invention will be explained based on the case where the following detection device is used.

1 and 2 show an example of a detection device used in the present invention. This detection device includes a transport means 9 for sending an object 1 to be detected to a detection means 4 described below, and a detection means 4 for detecting the presence or absence of a metallic object 3 and a non-metallic object 2 in the object 1 to be detected. , Konin]-da 19, conversion means 6, adjustment means 7, and exclusion means 8.

When detecting the object 1 using this device,
First, the object to be detected 1 is transferred to a transport means 9 such as a bell or a conveyor.
is supplied to the detection position of the detection means 4 at a constant speed. In this case, when the detecting means 4 comes into contact with the detected object 1 as described later, the metallic object 3 is detected by the detecting end 5 via the internal metallic object 2. That is, as shown in the figure, the object 1 to be detected is fed 11 (as described below) with the internal metal object 2 positioned above the metal object 3. When the detection end 5 of the detection means 4 is abutted from above, the non-metallic object 2 is interposed between the detection end 5 and the metal 11 object 3.

The detection means 4 has a detection distance 5' which exceeds the thickness 10 of the nonmetallic object 2 in the object 1 to be detected, and a detection distance 0N10FF which does not exceed the thickness 10 of the nonmetallic object 2. It has a function of detecting the state and transmitting a signal.As the detection means 4, various types of detectors such as a magnetic type, a high frequency transmission type, an actuating coil type, a capacitance type, etc. can be used. In addition, in the present invention, the detection end 5, I, T, and at least the detection distance as described above are
1! 'Jru2(;F type) is provided, but each may be assembled in plural numbers as shown in J in the figure.The detection end 5 may be moved up and down according to the shape of the detected object 1, for example. =8- Detection 1.1 is provided at a position slightly lower than the top of the detected object 1. Also, in order to make the contact with the detected object 1 smooth, It is also possible to attach a supporter 18 having an appropriate inclination to the detection end 5 at the time of contact with the detection end 5.

When the object 1 to be detected is supplied to the detection means 4, the detection end 5'
and 5j'' are brought into contact with this from above.

In this case, the 0N10FF state of each detection terminal is as follows. That is, when both the metallic object 3 and the non-metallic object 2 are contained in the object to be detected 1, the non-metallic object 2 may be interposed between the metallic objects 3 at each detection end. Therefore, the detection end 5' is 'ON' and the detection end 5''' is 'OF'.
At the same time, the object 1 to be detected is being moved at a constant speed fII by the transfer means 9, and the 0N10FF state of the detection end shown in - is the same as the length of the non-metallic object 2. 1
2 and a constant II depending on the length 13 of the metallic object 3;!
Continues for + time. On the other hand, when there is a metallic object 3 and no non-metallic object 2, the detection ends 5-15'' are all 'O'.
N'' state, and this is the length 13 of the metal object 3.
Accordingly, the detection end 5-155-
Fr” No state roared.

By the way, in the detection method of the present invention, the detection end 5-15i- with different detection distances is made to perform different operations depending on the presence or absence of the non-metallic object 2, as described in 1-1. There must be. For this reason, the non-metallic object 2 must have a certain thickness. However, if the non-metallic object 2 is flexible, for example, as an accessory to instant noodles, the detection end 1) becomes flat when the object 1B is attached, and the detection end 5- and 5 Both PAs are in the “ON” state,
One error may occur. Therefore, nonmetals ('
When the object 2 is flexible, it is preferable to install means for forcing it to have a certain thickness when the detection end 5 comes into contact with it.

Examples of the above-mentioned means are shown in FIGS. 3 and 4. This forcing means is the detection end! 1, which are fixedly installed on rotating wheels 16 provided at right angles to the transport direction of the object 1 to be detected, respectively, located before and after 5;
1! It consists of 1 [1-ra 14 and two bells strung on it].15. When detecting the object 1,
The forcing means applies the detection end 5 of the detection means 4 to the detected object 1.
is brought into contact with. At this time, the rotary shaft 16 of the eyeler 14 is rotated so that the bells 1 to 15 do not move along the direction in which the object 1 to be detected is transported and at the same speed as the peripheral speed. Therefore, a force is applied to one part of the object to be detected 1 to the left and the front due to the rotation of the roller 14 and the tension of the be/l/l-15. /l A similar force is applied to object 2, ensuring that it is non-metallic and has a constant thickness at the center of object 2. The object to be detected 1 is prevented from floating. IX
According to the forcing means described above, the detection object 1 is detected. It can be done reliably and continuously. As shown in the drawing, a feed-out [I-ler 17 is installed (]) behind the detection end 5.
This is rotated at the same speed as the speed at which the object to be detected 1 is transferred I!
While touching the detected object 1! If the non-metal 14
At the same time as the object 2 is made thicker, the object 1 to be detected can be sent out even more efficiently.

The above-mentioned 0N10FF state between the fixed 115 of the detection ends 5' and 5'' is transmitted as a signal from the detection means 4 and sent to the conversion means 6 mentioned above.

The T recorder 19 is controlled to emit a pulse signal of a predetermined output as the detected object 1 is transferred by the transfer means 9. For example, when the transfer means 9 is a belt conveyor, the encoder 19 is installed on an input shaft 21 that drives the bells 1 to be interlocked with the input shaft 21 .

The pulse signal emitted from the encoder 19 is transmitted to the conversion means 6 in the same manner as the signal from the detection means 4 that conveys the detection state of the detection end 5 described above.

The converting means 6 converts the signal transmitted from the detector [94 and =1-n]-der 19 into &! This is for converting the signal into another signal so that the analysis and comparison by the adjustment means 7 can be carried out appropriately, and for example, a converter using a half)# body is used.

The converting means 6 converts the converting means 6 only when a signal in which the detecting end 5' is 'ON' and the detecting end 5- is 'OFF' is transmitted from the detecting means 4.
The pulse signal that is constantly transmitted from the converter 6 to the converter 6 is controlled to be sent to the regulator 7. At the same time, in this case, both the metallic object 3 and the non-metallic object 2 are contained in the detected object 1! ! Measure in advance the duration time (pulse count) in which the pulse signal is transmitted in the case of "IT".Furthermore, if the pulse count in the above-mentioned "good" case is not sent from the conversion means 6, , υl dividing means 8″
The adjusting means 7 is controlled so as to send an operation signal to the exhaust 11'.

According to this method, if either or both of the metallic and non-metallic objects 2 and 3 are not present in the object to be detected 1, it will be reliably determined by pulse counting, and the detection will be extremely accurate. It will be done. At the same time, according to this method, the movement of the object 1 to be detected and the output of the pulse signal transmitted from the encoder 19 are synchronized, so even if the moving speed of the object 1 to be detected changes, there will be no problem in detection.

According to the above method, during detection, the detection end 5 bounces when it comes into contact with the detected object 1, and the same pulse signal is generated regardless of whether the non-metallic bamboo object 2 is present or not. If the object is sent to adjustment stage 7, or if a metal tq moving object and a non-metal object (41 object 2 are in 1'J Qr), only a part of them match and it is a defective part. However, these problems occur when the detection end 5 bounces from the "good" pulse signal controlled by the adjustment stage 7. It is set to a value that includes the pulse count that occurs on a platform that is more human than Pulse Callan 1-, and that includes metal 1Q and non-metal 11 objects 3.2.
It can be prevented very well.

The A8 bow converted by the conversion means 6 is Key II: Ding rQ 7
'C--Analyzed and compared, from which an operation signal is sent to the III removal means 8 described below. Sl! As the II means 7, a frost type regulator or the like is usually used.

Finally, the eliminating means 8 is activated in response to the operation signal 11 (for example, when either or both of the gold Ii 1 bamboo object 3 and the non-metallic object 2 are unoccupied, the detected object 1 is v
J-Zou Ulain and others were removed. In this case, the detection means 1
and 1) [If the appropriate A1 control system between the removing means 8 is set J and Rana iJ, then 4 [I]. Incidentally, as the removing means 8, for example, a ]-earlijictor or the like can be used.

The following has merely described one embodiment of the present invention, and various modifications may be made without departing from the gist of the present invention.

Needless to say, it can be easily applied.

According to the detection method of the present invention, it is possible to reliably detect the presence or absence of two types of objects, 11 metals and 1110 non-metals, inside the object to be detected without causing any erroneous actuation from the outside of the object. It is possible. Further, even when the object to be detected is continuously produced, detection can be performed continuously in accordance with the production process.

[Brief explanation of the drawing]

The figures show one embodiment of the detection device used in the detection method of the present invention, in which FIG. 1 is a front view thereof, FIG. 2 is a side view thereof,
FIG. 3 is a top view showing the means for forcing the object to be detected, and FIG. 4 is a front view thereof. 1... Object to be detected, 2... Non-metallic object, 3...15- Metallic object, 4... Detection means, 5.5",5'
″...detection end, 6...conversion 1 stage, 7.
...Adjustment means, 8...Exclusion means, 9.
...Transportation means, 10...1 Metal 1!1 Thickness of object, 11.11'''...Detection distance, 12
... Length of non-metallic object, 13 ... Metal 1/I - length of object, 14 ... Roller, 1
5... Belt, 16... Rotating shaft, 17
...Feeding roller, 18... Suporter, 19... r encoder, 20...
...Input shaft. Special Leopard Applicant: House Foods Industry Co., Ltd. 16- Mitsuru/Page 1 of the Collection 2

Claims (2)

[Claims] (1) A detection end that detects objects to be detected, including metallic and non-metallic objects, with a detection button N1 that exceeds the thickness of the non-metallic object, and a detection end that has a detection distance that does not exceed the thickness of the non-metallic object. abutting on a detection means equipped with through the non-metallic object,
A detection method characterized by detecting the presence or absence of metallic and non-metallic objects within the object to be detected by analyzing the detection state of the detection end. (2) A detection device d for detecting objects to be detected including metallic and non-metallic objects, comprising: a) a detection end having a detection distance exceeding the thickness of the non-metallic object and the non-metallic object; (1+) a detection means capable of coming into contact with the object to be detected, which includes a detection end having a detection n11III exceeding the thickness of An encoder that emits a pulse signal with a predetermined output, C
) Detection means and means for analyzing and comparing the signals emitted by the detector, e) Means for eliminating IJF from the detected object according to the analysis and comparison described in 1. A detection device characterized by comprising means for sending an object to be detected to the following detection means at a constant speed.