JPH09127017A - X-ray foreign-matter inspection apparatus with metering function and product inspection method using the apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a product processing line multifunctional and compact by installing an X-ray irradiation means and an X-ray detection means between a carrying-in conveyor and a carrying-out conveyor inside a shielding box and a weight metering means at one out of both conveyors. SOLUTION: An object to be inspected is carried in from an entrance 2a to a carrying-in conveyor 3 inside an X-ray shielding box 2, it is delivered to a carrying-out conveyor 4 in the central part so as to be carried out to an exit 2b, an X-ray irradiation device 6 is installed at the upper part of their gap 5, and an X-ray detector 7 is installed at the lower part. Two-dimensional data on the plane shape of the object to be inspected is found by many sensors which are arranged in the width direction of the conveyors 3, 4 of the detector 7, it is processed by an X-ray image processing part 11a, an image according to transmitted X-rays is found, and whether a foreign matter is mixed or not is discriminated. The weight of the object to be inspected on the conveyor 4 is metered by a metering device 4a, its signal is input to a weight processing part 11c, and a weight value is compared with a reference weight value which is read out from a storage part 11d so as to judge whether it is within the range of an allowable error or not. Their results are displayed on a display part 12b so as to be output to a sorting device 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray foreign matter detecting apparatus for irradiating an article to be inspected with X-rays and detecting a foreign matter mixed in the article from its transmission state, and more particularly to a measuring function of the article to be inspected. The present invention relates to an added device and a product inspection method using the device.

[0002]

2. Description of the Related Art In recent years, there have been increasing demands for safety of various products, and particularly in products such as foods, it is necessary to prevent foreign substances from entering the products as much as possible. In order to meet such a demand, for example, as disclosed in Japanese Patent Laid-Open No. 3-246485, X-ray foreign matter detection for inspecting whether or not foreign matter is mixed in the produced product. The device has been put to practical use.

In this type of X-ray foreign matter detecting apparatus, generally, a carry-in conveyor for carrying an article to be inspected into an X-ray shield box and a carry-out conveyor for carrying out an article to be inspected from within the shield box are connected in series. The X-ray irradiating means for irradiating the article to be inspected with X-rays through the gap provided between the terminal end of the carry-in conveyor and the start end of the carry-out conveyor in the shield box, and the article. The X-ray detecting means for detecting the transmitted X-rays is arranged so as to face each other, and the transmitted X-rays are processed by a computer so as to identify whether or not foreign matter is mixed in the article. Has become.

According to this X-ray foreign matter detecting device,
Not only metals such as iron, stainless steel, and copper mixed in the articles but also non-metals such as stones, glass, and plastics can be detected, and the inspected articles are also wrapped with plastic films. It is possible to detect contamination of foreign substances not only in articles but also in articles such as canned and bottled articles, and even articles in plastic cases.

[0005]

By the way, this kind of X
The line foreign matter detection device determines whether or not the weight of another product processing device, for example, the weight of the product is within a predetermined allowable error range with respect to the set weight, on the downstream side of the packaging process in the production line of various products. In many cases, it is arranged by being connected to a weight inspection device or a pricing device that attaches a pricing label on which a price or the like is printed on a product.

However, if a plurality of devices are connected to form a product processing line in this way, the line becomes longer, and problems such as the layout of the line and installation space arise, and the processing time for one product is increased. Will become longer and productivity will decrease.

Therefore, the present invention utilizes the structure of the X-ray foreign matter detection device to add other functions such as the weight inspection function and the price setting function to the device, thereby making the commercial value of the device. It is an object of the present invention to improve the production efficiency of the line and to realize the downsizing of the line equipped with this and the improvement of the productivity.

[0008]

Means for Solving the Problems To solve the above problems, the present invention is characterized by using the following means.

First, the invention according to claim 1 of the present application (hereinafter referred to as the invention)
The first invention) has an X-ray irradiating means for irradiating the inspected article with X-rays, and an X-ray detecting means for detecting the X-rays transmitted through the inspected article. In an X-ray foreign matter detection device for detecting foreign matter mixed in the article from the transmission state of the rays, a carry-in conveyor for carrying the article to be inspected into an X-ray shield box, and a carry-out to carry out the article to be inspected from the shield box A conveyor is arranged, and the X-ray irradiating means and the X-ray detecting means are arranged from the carry-in conveyor to the carry-out conveyor in the shield box, and the conveyor is provided on at least one of the carry-in conveyor and the carry-out conveyor. It is characterized by comprising a weighing means for weighing the weight of the above article.

The invention according to claim 2 (hereinafter referred to as the second
In the above first invention, the weight of the inspected article is compared by comparing the weight of the inspected article indicated by the signal from the weighing means with the weight inspection data stored in advance in the storage means. It is characterized in that it is provided with a weight inspecting means for judging the positive amount and the inadequate amount.

The invention according to claim 3 (hereinafter referred to as the third invention) is also the same as the first invention, but the weight of the article to be inspected indicated by the signal from the weighing means and the value stored in the storage means in advance. A price calculating means for calculating the price of the article from the data, and a pricing means for issuing a label on which the price calculated by the calculating means is printed and attaching the label to the inspected article. To do.

On the other hand, the invention according to claim 4 (hereinafter referred to as the fourth invention) is a carry-in conveyor for carrying the inspected article into the X-ray shield box, and a carry-out for carrying out the inspected article from the shield box. It has a conveyor, an X-ray irradiating means for irradiating the inspected articles conveyed by these conveyors with X-rays, and an X-ray detecting means for detecting the X-rays transmitted through the inspected articles, and the carry-in conveyor or unloading. The present invention relates to a product inspection method using an X-ray foreign matter detection device with a weighing function, wherein one of the conveyors is provided with weighing means for weighing the weight of the articles on the conveyor. Carrying in the shield box, irradiating X-rays by X-ray irradiating means, and detecting X-rays transmitted through the inspected article by X-ray detecting means. While determining whether or not a foreign substance is mixed in the inspected article, the weight of the inspected article on the carry-in conveyor or the carry-out conveyor is weighed by the weighing means, and compared with the weight inspection data for the article. According to, to determine the positive or negative amount of weight of the inspected article,
An article determined to contain foreign matter and an article determined to have an inadequate weight are discharged separately from an article determined to have no foreign matter and a positive weight. To do.

According to such a configuration, the first to third inventions are provided.
In any one of the inventions, the X-ray irradiating means irradiates the article to be inspected carried into the shield box by the carry-in conveyor with X-rays, and the X-rays transmitted through the article are detected by the X-ray detecting means. The presence or absence of foreign matter in the inspected article is detected by a predetermined process for the transmitted X-ray. Then, the article to be inspected is carried out from the shield box by the carry-out conveyor.

In this case, at least one of the carry-in conveyor and the carry-out conveyor is equipped with a weighing means, so that the weight of the article to be inspected is measured when the article is inspected.

According to the second aspect of the invention, the weight inspecting means causes the weight of the article to be inspected indicated by the signal from the weighing means, the reference weight of the article stored in advance in the storage means, the permissible error range, etc. The weight inspection data is compared to determine whether the weight of the article is positive or negative. In addition to the foreign matter inspection as described above, the weight inspection of the inspected article is performed. It will be.

According to the third aspect of the invention, the price calculation means uses the weight of the article to be inspected indicated by the signal from the weighing means, and the pricing data such as the unit price and the tare weight stored in advance in the storage means. The price of the article is calculated from
By the pricing means, a label printed with the price calculated by the calculation means is issued and attached to the article, and in addition to the foreign matter inspection, the price of the inspected article is Will be done.

On the other hand, according to the fourth aspect of the present invention, by using the X-ray foreign matter detecting device with a weighing function as described above, it is determined whether the foreign matter is mixed in the inspected article and whether the weight is positive or negative. At the same time, the articles determined to contain foreign matter and the articles determined to have an inadequate weight have no foreign matter,
And since it will be discharged separately from the articles whose weight is determined to be a positive amount, using only a single device,
Only the products that have passed both the foreign matter mixture inspection and the weight inspection, that is, the products that can be shipped as products are discharged to a predetermined place.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

First, the first embodiment will be described.
As shown in FIG. 1, an X-ray foreign matter detection device 1 according to this embodiment has an X-ray shield box 2 provided with an entrance 2a and an exit 2b of an article to be inspected on both sides. The carry-in conveyor 3 and the carry-out conveyor 4 are arranged in series. The start end of the carry-in conveyor 3 is located at the entrance 2a, and the article to be inspected is carried into the shield box 2 from the entrance 2a, and the article to be inspected is delivered to the carry-out conveyor 4 at the center of the box 2. Further, the end portion of the carry-out conveyor 4 is located at the exit 2b, and the article to be inspected received from the carry-in conveyor 3 is carried toward the exit 2b.

A gap 5 is provided between the end of the carry-in conveyor 3 and the start of the carry-out conveyor 4 in the center of the shield box 2 so that the article to be inspected is not hindered. At the same time, an X-ray irradiator 6 is arranged above the gap 5, and an X-ray detector 7 is arranged below the gap 5, and these are vertically opposed to each other through the gap 5.

Here, the X-ray irradiator 6 is adapted to generate X-rays in an amount corresponding to the input power. Also, X
As shown in FIG. 2, the line detector 7 includes a large number of sensors 7a ...
7a are arranged in the width direction of the conveyors 3 and 4 along the gap 5 so that the respective sensors 7a ... 7a generate outputs according to the amount of incident X-rays.

Further, a television camera 8 for picking up an image of an article to be inspected on the conveyor 3 is installed above the carry-in conveyor 3 in the shield box 2, and the carry-out conveyor 4 is mounted on the weighing machine 4a. It is a placed weighing conveyor, and the weight of the article to be inspected on the conveyor 4 is weighed together with the known weight of the conveyor 4 itself to the weighing machine 4a, so that the weight of the article to be inspected is measured. Has become.

In addition to the above configuration, the foreign matter detecting device 1
Has a control device 11 and an operating device 12, and the operating device 12 has an input section 12a having a large number of keys.
The display part 12b is provided. In addition, in this embodiment, a distribution device 21 is provided which separates and injects the inspected inspected products into normal products and abnormal products, and the starting end of the conveyor 22 in the distribution device 21 is the outlet of the shield box 2. 2b is connected to the terminal end of the carry-out conveyor 4, and the article to be inspected carried out from the exit 2b is introduced into the distribution device 21.

Next, the control system of the foreign matter detection device 1 centering on the control device 11 will be described with reference to FIG.

The control device 11 includes an X-ray image processing unit 11a to which a signal from the X-ray detector 7 is input, and a shape image processing unit 11b to which a signal from the television camera 8 is input.
A weight processing unit 11c to which a signal from the weighing device 4a of the carry-out conveyor (weighing conveyor) 4 is input, and a storage unit 11d in which data for X-ray irradiation amount setting and weight inspection is stored in advance. And the input unit 1 of the operating device 12
2a and the display unit 12b are connected as an external device, and signals are input and output between them.

Various data as shown in FIG. 4 are stored in the storage section 11d by using the input section 12a of the operating device 12. That is, in the storage unit 11d, X-ray reference doses X1, X2, ..., X are stored as X-ray dose setting data for each item code of each inspected article.
, and correction factors K1 and K according to the density of the article.
, ..., Kn, ... are stored, and reference weights W1, W2 for each item are used as data for weight inspection.
..., Wn, ... and allowable error ranges D1, D2, ..., Dn,
... and is remembered.

The reference dose Xn is the amount of transmitted X-rays detected by the X-ray detector 7 when the thickness of each type of article is the reference thickness T0. It is the irradiation dose when it becomes the most suitable amount in terms of processing, and is experimentally obtained in advance using the article of each item having the reference thickness T0. Further, the density correction coefficient Kn is insufficient for an article having a high density, for example, when the thickness is doubled, doubling the X-ray irradiation dose is insufficient. This is also for the purpose of coping with the case where the X-ray irradiation dose may be too large when it is doubled.

Then, a control signal is sent to the X-ray irradiator 6 and the distribution device 21 in accordance with the processing result based on these data stored in the storage section 11d and the input signals to the processing sections 11a, 11b and 11c. Is output. Next, a specific operation of this control will be described.

First, by inputting the item code of the article to be inspected for foreign matter this time through the input section 12a of the operating device 12 and placing the article on the carry-in conveyor 3,
The reference dose Xn of X-rays, the density correction coefficient Kn, the reference weight Wn and the permissible error range Dn for the item are read from the storage unit 11d of the control device 11, and the article is shielded by the carry-in conveyor 3. It will be carried into the box 2 from the entrance 2a of the box 2.

Then, the article to be inspected is picked up by the television camera 8 while being conveyed by the carry-in conveyor 3, and a signal from the camera 8 is sent to the shape image processing section 1 of the control device 11.
1b, the shape of the article is recognized, the thickness T is obtained as one of the shape data, and the thickness T and the X-ray of the inspection article read out from the storage unit 11d. Reference dose Xn and density correction coefficient Kn
And are used to set the amount of X-ray irradiation to be applied to the article.

Specifically, it is calculated how many times the thickness T of the article to be inspected corresponds to the reference thickness T0 when the reference dose Xn of X-rays is calculated, and the magnification (T / T0). Is the reference dose X
It is multiplied by n and corrected by using the density correction coefficient Kn, whereby the reference irradiation amount Xn is obtained when the amount of transmitted X-rays is the reference thickness T0, regardless of the thickness and density of the inspected article. It is almost the same as the amount when irradiated with.

Then, the control device 11 applies a voltage corresponding to this irradiation amount to the X-ray irradiator 6 so that the article to be inspected passes over the gap 5 between the carry-in conveyor 3 and the carry-out conveyor 4. In doing so, the X-ray irradiator 6 irradiates the inspected article with X-rays in the above-mentioned irradiation amount.

Further, the X-rays transmitted through the article to be inspected are detected by the X-ray detector 7 arranged below the gap 5. In that case, the X-ray detector 7 is
A large number of sensors 7a ... 7a arranged in the width direction of the conveyors 3 and 4
The article to be inspected is composed of
By continuously inputting data from these sensors 7a ... 7a while passing through, two-dimensional data about the entire shape similar to the planar shape of the inspected article can be obtained. Then, by processing this two-dimensional data by the X-ray image processing unit 11a, an image having a distribution of brightness and darkness according to the amount of transmitted X-rays can be obtained for the entire planar shape of the inspected article. .

In this case, the amount of transmitted X-rays detected by the X-ray detector 7 is the reference irradiation amount Xn when the thickness of the inspected article is the reference thickness T0 as described above. When the article having the reference thickness T0 is irradiated with the reference irradiation amount Xn, the transmitted X-ray amount is
Since the amount can be most clearly identified when foreign matter is mixed in the inspected article, even when the foreign matter is mixed in the inspected article having the thickness T, the Image processing will allow this to be clearly identified.

Then, the control device 11 displays the result of the image processing on the display portion 12b of the operation device 12, and determines whether or not foreign matter is mixed depending on the presence or absence of an unnatural dark portion in the image. , And outputs the determination result to the distribution device 21 as a control signal.

As described above, the inspection of the presence or absence of foreign matter in the inspected article by X-rays is completed, and the inspected article is unloaded from the shield box 2 by the unloading conveyor 4. However, when the inspected article is on the carry-out conveyor 4, the weight is weighed by the weighing machine 4a.

The signal from the measuring instrument 4a is sent to the controller 11
The weight value indicated by the signal is compared with the reference weight Wn and the allowable error range Dn of the article read from the storage section 11d. Then, the processing unit 11c determines whether or not the weight value is within an allowable error range Dn with respect to the reference weight Wn, that is, whether the weight is a positive amount or a non-weight amount, and the determination result is displayed on the display unit 12b of the operating device 12. On the other hand, the determination result is output to the distribution device 21 as a control signal.

Then, the sorting device 21 receives the above control signals, and when the article to be inspected this time received from the carry-out conveyor 4 is free of foreign matter and the weight is positive, the article is inspected. Is conveyed to a predetermined place as a normal product, and when foreign matter is mixed in and the weight is inadequate, the article is conveyed to a predetermined discharge place as an abnormal product. In that case, an abnormal product containing foreign matter and an improper weight product may be discharged separately.

Next, a second embodiment of the present invention will be described.

As shown in FIG. 5, the X according to this embodiment is
Similarly to the first embodiment, the line foreign matter detection device 51 also includes a carry-in conveyor 53 and a carry-out conveyor 54 in an X-ray shield box 52 provided with an entrance 52a and an exit 52b of the article to be inspected on both sides. The X-ray irradiator 56 is arranged above the gap 55 provided between the terminal end of the carry-in conveyor 53 and the start end of the carry-out conveyor 54 at the center of the shield box 52, and the X-ray irradiator 56 is arranged below. Has a configuration in which X-ray detectors 57 are respectively arranged.

Above the carry-in conveyor 53,
A television camera 58 for picking up an image of the article to be inspected on the conveyor 53 is installed, and the carry-out conveyor 54 is a weighing conveyor equipped with a weighing device 54a.
A control device 61 having an X-ray image processing unit 61a, a shape image processing unit 61b, and a weight processing unit 61c to which the signal from the X-ray detector 56, the signal from the television camera 58, and the signal from the measuring instrument 54a are respectively input. And the input unit 62a
Also, an operating device 62 having a display unit 62b is provided, and these configurations are also the same as those in the first embodiment.

On the other hand, in the second embodiment, FIG.
As shown in, the storage unit 61d of the control device 61 stores X as the X-ray irradiation dose setting data similar to that in the first embodiment.
In addition to the line reference doses X1, X2, ..., Xn, ... and the density correction coefficients K1, K2, .., Kn, .., the unit prices A1, A2 ,. The weights B1, B2, ..., Bn, ... Are stored for each item.

Further, in this embodiment, the first
Instead of the sorting device 21 in the embodiment, the printing unit 71
A label sticking device 71 having a and a sticking portion 71b is provided, and the sticking conveyor 71c in the device 71 is connected to the end portion of the carry-out conveyor 54 at the outlet 52b of the shield box 52.

The data stored in the storage unit 61d and the processing units 61a, 61b, 6 of the control device 61 are also included.
A control signal is output to the X-ray irradiator 56 and the label sticking device 71 according to the processing result based on the input signal to the 1c.

Also according to the second embodiment, the contamination of the foreign matter in the inspected article carried in the shield box 52 by the carry-in conveyor 53 is determined by the X-ray in the same manner as in the first embodiment. Then, the determination result is displayed on the display portion 62b of the operation device 62, but if a foreign substance is mixed, a warning sound may be further emitted.

When the inspection of the article to be inspected for foreign matter is completed in this manner, the article to be inspected is carried out from the shield box 52 by the carry-out conveyor 54. The weight of the article is weighed by the weighing device 54a of the carry-out conveyor 54.

The signal from the weighing device 54a is sent to the control device 6
No. 1 weight processing unit 61c, the net weight is calculated from the weight value indicated by the signal and the tare weight Bn of the article read from the storage unit 51d, and the net weight is also read from the storage unit 51d. The price is calculated from the unit price An and the control signal indicating the price is output to the label sticking device 71. Then, in the sticking device 71 that has received this control signal, a label having the price and the like printed by the printing section 71a is issued, and the article to be inspected is sent from the carry-out conveyor 54 to the sticking conveyor 71c of the label sticking device 71. The label is affixed by the affixing section 71b when the label is affixed to and conveyed to a predetermined position.

Regarding the article to be inspected, which is determined by the above-mentioned foreign matter mixture inspection to have foreign matter therein, the printing unit 71a of the pasting device 71 prints, for example, "foreign matter mixture" on the label, and Inspection article pasting conveyor 71
The label may be affixed by the affixing section 71b when the label is handed over to c and conveyed to a predetermined position.

Further, a sorting device may be provided on the downstream side of the label sticking device 71 so that an article in which foreign matter is mixed is carried out to a predetermined discharge place as an abnormal article.

In this way, according to the second embodiment, the inspection and the price of the foreign matter by the X-ray are performed.

By using the television cameras 5 and 58 for detecting the thickness of the article to be inspected as in the first and second embodiments, the following X-ray foreign matter detecting devices 1 and 51 are provided. It is possible to add various functions.

That is, in addition to the data shown in FIG. 4 or 6, the storage sections 11d and 61d store item identification data such as the shape and color of each item code as shown in FIG. It is possible to identify the item of the imaged article by comparing the shape and the color or the like recognized by the shape image processing units 11b and 61b captured by the television cameras 8 and 58 with the item identification data. Become. Therefore, in this case, the input units 12a of the operation devices 12 and 62,
The operation of inputting the item code of the article to be inspected using 62a becomes unnecessary, and the worker carries in the article to be inspected by the conveyors 3, 53.
Simply put it on and all the other actions will be fully automated.

The details of the article identification method using a television camera have been described in the previous patent application (JP-A-6-92338) filed by the present applicant.

Further, by comparing the shape of the article to be inspected picked up by the television cameras 5 and 58 with the stored shape data of the article, the appearance abnormality such as chipping or dent of the article is detected. It is also possible to detect. Further, as shown in FIG.
If the data of the sticking position and the size of the label stuck on the upstream side of the inspection device 1, 51 is stored for each item code in d, the size and the sticking position of the label can be stored in the TV camera 8, By detecting the image picked up at 58 and comparing it with the stored data, it is possible to discriminate whether or not the predetermined label is correctly attached to the regular position.

To identify the item of the article to be inspected, the key input operation by the input sections 12a and 62a of the operation devices 12 and 62 described above, or the television camera 8 and 58 and the item identification data such as shape and color are used. In addition to the automatic identification described above, a product processing device such as a packaging device is connected to the upstream side of the foreign matter detection devices 1 and 51, and the work by these devices and the work by the inspection devices 1 and 51 are continuously performed. In this case, the item code of the article to be inspected may be supplied to the detection devices 1 and 51 from these upstream devices.

Further, according to each of the above embodiments, X-ray irradiation and detection is performed through the gaps 5, 55 provided between the end portions of the carry-in conveyors 3, 53 and the start end portions of the carry-out conveyors 4, 54. However, it is also possible to irradiate the article to be inspected on one of the conveyors with X-rays and detect the transmitted X-rays via the conveyor.

[0057]

As described above, according to the present invention, an X-ray foreign matter detecting apparatus for irradiating an inspected article carried in a shield box with X-rays and detecting foreign matter mixed in the article from the transmission state thereof. In, since at least one of the carry-in conveyor for carrying in the inspected article into the shield box or the carry-out conveyor for carrying out the inspected article from the box is provided with a weighing means, in addition to the inspection of foreign matter mixture for the inspected article The weight of the article will be weighed.

Therefore, by comparing this weight value with the previously stored data for weight inspection of the article, in addition to the above-described foreign matter inspection, the weight of the article to be inspected is positive or insignificant. An inspection will be conducted, and the price of the article will be calculated from this weight value and pre-stored pricing data, and a label will be printed to print the value of the article to be inspected. It becomes possible to attach.

As a result, the commercial value of this type of X-ray foreign matter detection apparatus is improved, and when other processing such as weight inspection or pricing is performed in succession to the foreign matter inspection, the weight inspection apparatus or the pricing apparatus is used. Is unnecessary, the product processing line is shortened accordingly, problems such as the layout and installation space of the line are solved, and the processing time for one product is shortened, thus improving the productivity.

[Brief description of the drawings]

FIG. 1 is a front view of an X-ray foreign matter detection device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the X-ray detector taken along the line aa of FIG.

FIG. 3 is a control system diagram of the detection device.

FIG. 4 is an explanatory diagram of data stored in a storage unit of the detection device.

FIG. 5 is a control system diagram of an X-ray foreign matter detection device according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram of data stored in a storage unit of the detection device.

FIG. 7 is an explanatory diagram of other data additionally stored in the storage unit of the X-ray foreign matter detection device according to the first and second embodiments.

[Explanation of symbols]

1,51 X-ray foreign matter detection device 2,52 Shield box 3,53 Carry-in conveyor 4,54 Carry-out conveyor 4a, 54a Measuring means (metering machine) 6,56 X-ray irradiating means (X-ray irradiator) 7,57 X-ray Detection means (X-ray detector) 11,61 Weight inspection means, price calculation means (control device) 11c, 61c Storage means (storage unit) 71 Pricing means (labeling device)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location G01V 5/00 G01V 5/00 A (72) Inventor Masaru Ishinami 959 Shimohage, Ritto-cho, Kurita-gun, Shiga Prefecture No. 1 share company Ishida Shiga Works

Claims (4)

[Claims] 1. An X-ray irradiating means for irradiating an X-ray to an inspected article, and an X-ray detecting section for detecting an X-ray transmitted through the inspected article, wherein An X-ray foreign matter detection device for detecting foreign matter mixed in the article from a transmission state, which is a carry-in conveyor for carrying the article to be inspected into an X-ray shield box, and a carry-out to carry out the article to be inspected from the shield box. A conveyor is arranged, and the X-ray irradiation means and the X-ray detection means are arranged in the shield box from the carry-in conveyor to the carry-out conveyor, and at least one of the carry-in conveyor and the carry-out conveyor. An X-ray foreign matter detection device with a weighing function, further comprising a weighing means for weighing the weight of the article on the conveyor. 2. The weight of the article to be inspected, which is indicated by the signal from the weighing means, and the weight inspection data stored in advance in the storage means are compared to determine whether the weight of the article to be inspected is positive or negative. The X-ray foreign matter detection apparatus with a weighing function according to claim 1, further comprising a weight inspection unit for determining whether the X-ray foreign matter detection apparatus has a weighing function. 3. Price calculation means for calculating the price of the article from the weight of the article to be inspected indicated by the signal from the weighing means and the pricing data prestored in the storage means, and the price calculation means. The X-ray foreign matter detection device with a weighing function according to claim 1, further comprising: a pricing unit that issues a label on which a price or the like is printed and attaches the label to the inspected article. 4. An in-carrying conveyor for carrying an inspected article into an X-ray shield box, an unloading conveyor for unloading the inspected article from the shield box, and an X-ray to the inspected article conveyed by these conveyors. X-ray irradiating means for irradiating the article and X-ray detecting means for detecting the X-rays transmitted through the article to be inspected, and the weight of the article on the conveyer or the carry-out conveyor is weighed. Is a product inspection method using an X-ray foreign matter detection device with a weighing function provided with a weighing means for carrying out an article to be inspected into the shield box by the carry-in conveyor and irradiating X-rays by the X-ray irradiating means. And X
The weight of the article to be inspected on the carry-in conveyor or the carry-out conveyor is determined by the measuring means while the presence or absence of foreign matter in the article to be inspected is determined by detecting the X-ray transmitted through the article to be inspected by the line detecting means. Is measured and compared with the weight inspection data for the article to determine the positive or negative amount of the weight of the inspected article. An article inspection method using an X-ray foreign matter detection device with a weighing function, which discharges an article determined to be compliant with an article determined to have no foreign matter and a positive weight .