TWI718042B - Inspection device, packaging sheet manufacturing device and packaging sheet manufacturing method - Google Patents

Abstract

[Problem] To provide an inspection device that can suppress a decrease in inspection efficiency and more reliably guarantee the uniformity of inspection quality. [Solution] While irradiating X-rays that can penetrate the PTP film 9, the X-ray sensor 52a obtains an X-ray penetration image based on the X-rays that have penetrated the PTP film 9, based on the X-ray penetration The image is checked. The X-ray transmission image is obtained by bending the PTP film 9 in such a way that it protrudes toward the opposite side of the X-ray irradiation source, while maintaining the curved shape of the PTP film 9. The X-ray sensor 52a is set in a curved shape along the shape of the PTP film 9. Thereby, the unevenness of the electromagnetic wave intensity irradiated to each position of the PTP film 9 can be suppressed. As a result, the X-ray transmission image is more homogeneous in each position.

Description

Inspection device, packaging sheet manufacturing device and packaging sheet manufacturing method

The present invention relates to an apparatus and method used when manufacturing a packaging sheet containing contents.

In various areas such as conventional medicines and food products, PTP (press through package) sheets are widely used as packaging sheets for packaging the contents of tablets and the like.

The PTP sheet is provided with a container film formed with a bag portion for accommodating contents and a cover film installed to seal the opening side of the bag portion to the container film, and the bag portion is pressed from the outside to be housed in it The contents are pierced into the membrane of the lid, and the tablet can be taken out.

Such a PTP sheet has undergone a bag forming process that continuously forms a bag portion on a belt-shaped container film, a filling process that continues to fill the bag portion with tablets, and is formed on the container film so as to seal the opening side of the bag portion. The flange part around the bag part is manufactured by attaching a belt-shaped cover film to the installation process of manufacturing the PTP film, and the cutting process of cutting the PTP sheet from the PTP film into the final product. Generally, in a PTP film, a plurality of rows of pockets filled with contents are formed along the width direction of the PTP film and arranged in the longitudinal direction of the PTP film.

Generally speaking, when manufacturing PTP sheets, during the manufacturing process (post-process of accommodating the contents in the bag part and the previous process of cutting the PTP sheet from the PTP film), the abnormality of the contents (for example, whether there is any abnormality in the bag part) Inspections related to contents, cracks, breakages, etc.), and inspections related to abnormalities of the flange (for example, whether there is foreign matter in the flange, etc.).

In recent years, from the viewpoint of seeking improvement in light-shielding properties and moisture resistance, there have been an increasing number of container films and cover films made of opaque materials based on aluminum or the like.

In such a case, the various inspection systems described above are performed using an X-ray inspection device or the like. Generally speaking, an X-ray inspection device is equipped with an X-ray generator (X-ray source) that irradiates X-rays to the continuously conveyed PTP film, and an X-ray detector that detects X-rays penetrating the PTP film. Various inspections of X-ray penetration. In addition, in terms of inspection methods, there is known an X-ray image corresponding to the X-ray penetrating the PTP film, and the same image processing is applied to the X-ray image for each column of the content (bag portion) The algorithm is a method of judging the quality of the content based on the X-ray image to which the algorithm is applied, using thresholds set for each column of the content (for example, refer to Patent Document 1, etc.). In short, this technique uses an X-ray generator (X-ray source) to irradiate fan-shaped (radial) X-rays, so that the X-rays are irradiated at different angles between the contents of a certain column and the contents of other columns. It is a problem that the area value and the volume value of the X-ray image between the contents of each column are different. In order to solve this problem, convenient threshold values and the like are set for each column of the contents. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2013-253832 A

[The problem to be solved by the invention]

However, in the above-mentioned inspection method, it is necessary to set the threshold value for each column of the content, and it requires a lot of labor and time to set the threshold value. For example, in a PTP film with 10 rows of contents, at least 10 thresholds must be set for inspection.

Furthermore, when the threshold value of each column is different, it may happen that the content judged as defective in a certain column is judged as good in another column. In addition, during inspection of the flange portion located between the rows of the content, problems such as variations in the judgment result depending on which row threshold is selected may occur. That is, it may be difficult to maintain the uniformity of the inspection quality due to the variation of the inspection result due to the position difference in the PTP film.

In addition, the above-mentioned problems may occur not only in PTP packaging, but also in other packaging fields such as SP (strip package) packaging and the contents of tablets such as tablets. In addition, not limited to X-rays, other electromagnetic waves such as megahertz electromagnetic waves that penetrate the packaging sheet may also occur.

The present invention is developed in view of the foregoing circumstances, and its object is to provide an inspection device, a packaging sheet manufacturing device, and a packaging sheet manufacturing method that can suppress the reduction in inspection efficiency and more reliably guarantee the uniformity of inspection quality. [Means to solve the problem]

Hereinafter, each method suitable for solving the above purpose will be explained separately. In addition, as necessary, specific effects are added to the corresponding means.

Means 1. An inspection device used when manufacturing a tape-shaped packaging film and cutting the packaging film to obtain a packaging sheet. The tape-shaped packaging film is equipped with a tape-shaped first film made of an opaque material And a second film in a strip shape made of an opaque material and containing contents in the containing space formed between the two films, characterized by: The electromagnetic wave irradiation means has an irradiation source that irradiates the conveyed packaging film from the first film side with electromagnetic waves that can penetrate the packaging film; The imaging means has a detection unit arranged on the side of the second film so that the packaging film and the electromagnetic wave irradiation means are opposed to each other, and can detect electromagnetic waves penetrating the packaging film, and obtain electromagnetic waves based on the electromagnetic waves penetrating the packaging film Penetrating image; and The image processing means can perform the inspection of the aforementioned packaging sheet based on the electromagnetic wave penetration image obtained by the aforementioned photographing means, And has: The deforming means is arranged upstream of the electromagnetic wave irradiation means along the transport path of the packaging film, and bends the packaging film in such a way that it protrudes toward the opposite side of the irradiation source of the electromagnetic wave irradiation means; and The means for maintaining the deformed state is arranged downstream of the electromagnetic wave irradiation means along the conveying path, and at a position where at least the electromagnetic wave from the electromagnetic wave irradiation means is irradiated, the packaging film bent by the deforming means can be maintained shape, The detection part of the imaging means has a curved shape along the curved shape of the packaging film.

In addition, the following means are the same. The above-mentioned "packaging sheet" includes: for example, "PTP sheet", "SP sheet", and so on. In addition, the above-mentioned "inspection related to packaging sheet" includes, for example, "inspection related to contents" such as the presence or absence of the contents in the storage space, damage, etc.; on the flange portion (installation) formed around the storage space The part of the first film and the second film) is the "inspection related to the flange" for foreign matter. Furthermore, as electromagnetic waves, X-rays or megahertz electromagnetic waves can be cited.

According to the above-mentioned means 1, the packaging film is bent by the deforming means so as to protrude toward the opposite side of the electromagnetic wave irradiation means, and while the curved shape of the packaging film is maintained by the deformed state maintaining means, the electromagnetic wave irradiation means The packaging film is irradiated with electromagnetic waves, and at the same time the electromagnetic wave penetration image is obtained by photographing means. Therefore, compared with the case where the packaging film is inspected in a flat state, the distance difference from the electromagnetic wave irradiation source to each position of the packaging film can be reduced, and the unevenness of the electromagnetic wave intensity irradiated to each position of the packaging film can be suppressed. In addition, since the electromagnetic wave detection part in the imaging means is set to a curved shape along the curved shape of the packaging film, the incident angle of the electromagnetic wave penetrating the packaging film and incident on the detection part is not affected by the position of the penetrating packaging film. There is a big difference. These effects interact with each other, and the obtained electromagnetic wave penetration image becomes more homogeneous in each position. This eliminates the need to set thresholds for each column of the content when performing inspections on the packaging sheet based on the electromagnetic wave penetration image, and it is possible to suppress the decrease in inspection efficiency. In addition, it is possible to more reliably suppress the variation of the inspection result due to the positional difference in the packaging film and to more reliably guarantee the uniformity of the inspection quality.

Means 2. The inspection device according to Means 1, wherein the deforming means is configured to form an arc shape centered on the irradiation source in a cross section that passes through the irradiation source and is orthogonal to the conveying direction of the packaging film The aforementioned packaging film is bent.

According to the aforementioned means 2, the distance from the electromagnetic wave irradiation source to each position of the packaging film can be approximately constant, and the intensity of the electromagnetic wave irradiated to each position of the packaging film can be approximately equal. In addition, the incident angle of the electromagnetic wave that penetrates the packaging film and is incident on the detection part can be set to be approximately the same regardless of the position of the penetrating packaging film. These results are that the obtained electromagnetic wave penetration image becomes more homogeneous in each position.

Means 3. The inspection device of means 1 or 2, which includes a restoration means arranged downstream of the deformed state maintaining means along the conveying path to restore the packaging film to a flat state.

According to the aforementioned means 3, the curved packaging film can be restored to a flat state by the restoration means. Therefore, various treatments for the packaging film after inspection (for example, the treatment of cutting the packaging film to obtain a packaging sheet, etc.) can be performed more accurately (as expected).

Means 4. The inspection device of means 3, wherein the restoration means includes a straight roller that is rotatable and has a constant outer diameter along the axis of rotation, and is configured to contact the packaging film with the outer peripheral surface of the straight roller The packaging film is restored to a flat state.

In addition, a recess for accommodating the bag may be formed on the outer peripheral surface of the straight roller. At this time, if the outer diameter of the imaginary cylinder including the outer peripheral surface of the straight roller is constant along the rotation axis direction, it can be said that the configuration satisfies the aforementioned means 4.

According to the aforementioned means 4, the packaging film can be reliably and easily placed in a flat state. In addition, the structure of the restoration means can be prevented from being complicated, and the device can be simplified and reduced in size.

Means 5. The inspection device according to any one of means 1 to 4, wherein the second film has a protruding shape and the internal space has a pocket forming the storage space, and the deforming means is such that the pocket faces the aforementioned The aforementioned packaging film in a state where the opposite side of the electromagnetic wave irradiation means protrudes is bent.

When the packaging film is bent as if the bag part is arranged inside the curve, the force in the direction of compressing the bag part is applied to the packaging film during bending. Therefore, the packaging film may become difficult to bend smoothly, or the bag may collapse and deform.

In this regard, according to the aforementioned means 5, the deforming means is to bend the packaging film in a state where the bag portion protrudes toward the side opposite to the electromagnetic wave irradiation means. Therefore, the packaging film is bent so that the bag portion is arranged outside the curve. Thereby, the packaging film can be bent more reliably and smoothly, and the bag portion can be more reliably prevented from collapse and deformation.

Means 6. The inspection device according to any one of means 1 to 5, wherein the deforming means includes a deforming roller, which is rotatable and has an outer periphery whose circumference gradually decreases from both ends to the center in the direction of the axis of rotation The surface, or the outer peripheral surface whose circumference gradually increases from the both ends to the center side along the rotation axis direction, is configured to bend the packaging film by contacting the deformation roller with the packaging film.

Moreover, you may have the recessed part for accommodating a bag part on the outer peripheral surface of the roller for deformation|transformation. At this time, if the peripheral length of the imaginary outer peripheral surface including the outer peripheral surface of the deforming roller is a shape that gradually decreases or gradually increases from the both ends to the central portion in the direction of the rotation axis, it can be said to satisfy the above-mentioned means. The composition of 6.

According to the aforementioned means 6, the packaging film is bent by contacting the deformation roller with the packaging film. Therefore, the packaging film can be bent smoothly without applying an excessive load to the transported packaging film. As a result, it is possible to more reliably prevent the quality of the packaging sheet produced from deteriorating. In addition, since the deforming means can be realized by a relatively simple structure, it is possible to achieve miniaturization and cost reduction of the device, and to improve the convenience of maintenance.

Means 7. The inspection device according to means 6, wherein the deforming means has a pressing roller that is rotatable and holds the packaging film between the deforming roller.

According to the above-mentioned means 7, the packaging film can be bent into a target shape more reliably. Therefore, the above-mentioned various functions and effects related to inspection can be exerted more effectively.

Means 8. The inspection device of any one of means 1 to 7, wherein the deforming means and the deformed state maintaining means are respectively constituted by the same device.

According to the above-mentioned means 8, the deforming means and the deformed state maintaining means are constituted by the same device. Therefore, compared with the case where each means are constituted by different devices, it is possible to reduce manufacturing costs, facilitate parts management, and improve maintainability.

Means 9. A packaging sheet manufacturing device characterized by including an inspection device as in any one of means 1 to 8.

According to the above-mentioned means 9, the same effects as the above-mentioned means 1, etc. can be obtained.

Means 10. A packaging sheet manufacturing method for manufacturing a strip-shaped packaging film and cutting off the packaging film to obtain a packaging sheet, the packaging film being installed with a strip-shaped first made of opaque material A film and a strip-shaped second film made of an opaque material, and containing contents in a storage space formed between the two films, characterized by: Installation project, installing the conveyed belt-shaped first film and the conveyed belt-shaped second film; The filling process is to fill the aforementioned contents in the aforementioned containing space formed between the aforementioned first film and the aforementioned second film; The cutting process is to cut the packaging sheet from the strip-shaped packaging film, the packaging film is formed by installing the first film and the second film and containing the contents in the storage space; and Perform the inspection process of the inspection of the aforementioned packaging sheet, The aforementioned inspection project includes: In the irradiation process, an electromagnetic wave capable of penetrating the packaging film is irradiated from the first film side to the transported packaging film from the radiation source provided by the established electromagnetic wave radiation means; The imaging process uses imaging means to obtain electromagnetic wave penetration images based on electromagnetic waves that have penetrated the packaging film. The imaging means is arranged on the second film side with the packaging film and the electromagnetic wave irradiation means facing each other. It is formed by detecting the electromagnetic wave penetrating the aforementioned packaging film; and The quality judgment process is based on the electromagnetic wave penetration image obtained by the aforementioned shooting process to determine the quality of the aforementioned packaging film. The aforementioned irradiation process and the aforementioned photographing process are performed by bending the packaging film so as to protrude toward the opposite side of the radiation source and maintaining the curved shape of the packaging film. The detection part of the imaging means is formed in a curved shape along the curved shape of the packaging film.

According to the aforementioned means 10, the same effects as the aforementioned means 1 can be obtained.

Hereinafter, an embodiment will be described with reference to the drawings. First, the PTP sheet 1 as a packaging sheet (sheet-like packaging body) will be described.

As shown in FIGS. 1 and 2, the PTP sheet 1 has a container film 3 provided with a plurality of pockets 2 formed in a protruding shape, and a cover film 4 attached to the container film 3 as if the pockets 2 are plugged. The "container film 3" in this embodiment constitutes the "first film", and the "cover film 4" constitutes the "second film".

The container film 3 and cover film 4 in this embodiment are made of an opaque material using aluminum as a base material (main material). For example, the container film 3 is formed by an aluminum laminated film (a synthetic resin film laminated on an aluminum film). On the one hand, the cover film 4 is formed by an aluminum film.

The PTP sheet 1 is formed in a substantially rectangular shape in plan view, and its four corners are arc-shaped with rounded corners. In the PTP sheet 1, a row of pockets formed by five pockets 2 arranged in the longitudinal direction of the sheet forms two rows in the short side direction of the sheet. That is, a total of ten pockets 2 are formed. The storage space 2a in each pouch 2 contains the lozenges 5 as contents one by one.

In addition, a plurality of saddle stitches 7 are formed along the short side direction of the PTP sheet 1 as cutting lines, which can be cut in units of small sheets 6 containing a predetermined number (two in this embodiment) of the pocket 2 .

In addition, on the PTP sheet 1, at one end of the sheet in the longitudinal direction, a label portion 8 on which various information such as the name of the tablet and the lot number (in this embodiment, the characters "ABC") are printed is attached. The label part 8 is not provided with the bag part 2 and is separated from the small sheet 6 by a sewing thread 7.

The PTP sheet 1 of this embodiment is formed by attaching a tape-shaped container film 3 and a tape-shaped cover film 4 to a tape-shaped PTP film 9 (see FIG. 3) as a packaging film (tape-shaped packaging body). The PTP sheet 1 of the final product is manufactured by the process of punching into a rectangular sheet.

As shown in FIG. 3, in the PTP film 9 of this embodiment, the row|line|column of the pocket part 2 side-by-side along the longitudinal direction is provided in plural (10 in this embodiment) along the width direction. That is, the PTP film 9 in the present embodiment is configured such that a plurality of pockets 2 corresponding to two sheets are arranged along the width direction. Moreover, it is comprised so that the part corresponding to each label part 8 of the PTP sheet 1 of two sheets exists in the width direction center part of the PTP film 9, and this width direction center part is formed in the flat shape where the pocket part 2 does not exist.

Next, the schematic configuration of the PTP packaging machine 10 as a packaging sheet manufacturing apparatus for manufacturing the above-mentioned PTP sheet 1 will be described.

As shown in FIG. 4, on the most upstream side of the PTP packaging machine 10, the web of the tape-shaped container film 3 is wound into a roll shape. The leading end side of the container film 3 wound in a roll shape is guided by a guide roller 13. The container film 3 is hung on the intermittent feed roller 14 on the downstream side of the guide roller 13. The intermittent feed roller 14 is connected to an intermittently rotating motor, and transports the container film 3 intermittently.

Between the guide roller 13 and the intermittent feed roller 14, along the transport path of the container film 3, a bag portion forming device 16 as a bag portion forming means is arranged. With this, the bag portion forming device 16 forms a plurality of bag portions 2 at a predetermined position of the container film 3 by cold working. The forming of the bag portion 2 is performed in an interval during which the container film 3 is conveyed by the intermittent feed roller 14.

However, the PTP packaging machine 10 of the present embodiment is configured such that the container film 3 is not only made of aluminum, but can also be made of relatively hard and rigid thermoplastics such as PP (polypropylene) or PVC (polyvinyl chloride). Packaging machine (combined machine) made of resin material. Therefore, a heating device 15 for heating the container film 3 into a soft state is provided on the upstream side of the bag forming device 16. Of course, the heating device 15 is not used when the container film 3 made of aluminum is formed.

The container film 3 sent from the intermittent feed roller 14 is hung in the order of the tension roller 18, the guide roller 19, and the film receiving roller 20. Since the film receiving roller 20 is connected to a fixed rotating motor, the container film 3 is conveyed at a continuous and constant speed. The tension roller 18 is set in a state where the container film 3 is pulled to the tensioned side by elastic force to prevent the container film 3 from bending due to the difference in the conveying action of the intermittent feed roller 14 and the film receiving roller 20. And keep the container film 3 in a constant tension state.

Between the guide roller 19 and the film receiving roller 20, along the conveyance path of the container film 3, a tablet filling device 21 as a filling means is arranged.

The tablet filling device 21 has a function of automatically filling the tablet 5 in the bag 2. The tablet filling device 21 is synchronized with the action of transporting the container film 3 by the film receiving roller 20, which opens the baffle at every predetermined interval to drop the tablets 5, and fills the tablets 5 in each bag with this baffle opening action 2.

On the one hand, the web forming the belt-shaped cover film 4 is wound into a roll shape on the most upstream side. The leading end of the cover film 4 rolled into a roll is guided toward the heating roller 23 by the guide roller 22. The heating roller 23 is capable of being pressed into contact with the aforementioned film receiving roller 20, and the container film 3 and the cover film 4 are sent between the two rollers 20 and 23.

Then, the container film 3 and the cover film 4 are passed between the two rollers 20 and 23 in a heated and press-bonded state, and the cover film is applied to the flange portion 3a (refer to FIGS. 1 to 3) around the bag portion 2 of the container film 3 4. The bag 2 is plugged by the cover film 4. Thereby, the PTP film 9 filled with the tablet 5 in each bag part 2 is manufactured. In addition, a mesh-like fine ridge (not shown) for sealing is formed on the surface of the heating roller 23, and the fine ridge is strongly press-bonded to achieve a strong seal. In addition, the film receiving roller 20 is provided with an encoder (not shown). The film receiving roller 20 rotates a predetermined amount, that is, every time the PTP film 9 is transported, a predetermined amount is output to the X-ray inspection device 45 described later. Timing signal.

The PTP film 9 sent out from the film receiving roller 20 is hung on the intermittent feed roller 28. Since the intermittent feed roller 28 is connected to a motor that rotates intermittently, the PTP film 9 is intermittently transported.

An X-ray inspection device 45 is arranged between the film receiving roller 20 and the intermittent feed roller 28 along the transport path of the PTP film 9. The X-ray inspection device 45 is used to detect abnormalities of the tablets 5 contained in the bag portion 2 (e.g., the presence or absence of the tablets 5, cracks, breakage, etc.) or abnormalities of the flange portion 3a other than the bag portion 2 (e.g. The detection of foreign objects and the like on the flange portion 3a is the main purpose of X-ray inspection. In this embodiment, the "X-ray inspection apparatus 45" constitutes the "inspection apparatus".

The PTP film 9 sent out from the intermittent feed roller 28 is hung in the order of the tension roller 29 and the intermittent feed roller 30. Since the intermittent feed roller 30 is connected to an intermittently rotating motor, the PTP film 9 is intermittently transported. The tension roller 29 is set in a state where the PTP film 9 is pulled to the tensioned side by elastic force to prevent the PTP film 9 from slackening between the intermittent feed rollers 28 and 30.

Between the intermittent feed roller 28 and the tension roller 29, along the conveying path of the PTP film 9, the saddle stitch forming device 33 and the marking device 34 are arranged in this order.

The sewing thread forming device 33 has a function of forming the above-mentioned sewing thread 7 at a predetermined position of the PTP film 9. The marking device 34 has a function of adding the marking "ABC" to a predetermined position of the PTP film 9 (a position corresponding to the label portion 8).

The PTP film 9 sent out from the intermittent feed roller 30 is hung in the order of the tension roller 35 and the continuous feed roller 36 on its downstream side. Between the intermittent feed roller 30 and the tension roller 35, a sheet punching device 37 is arranged along the transport path of the PTP film 9. The sheet punching device 37 has a function as a sheet punching means (cutting means) for punching the outer edge of the PTP film 9 in units of the PTP sheet 1.

The PTP sheet 1 punched by the sheet punching device 37 is transported by the conveyor 39 and temporarily stored in the hopper 40 for the finished product. However, when a defective product is determined by the above-mentioned X-ray inspection device 45, the PTP sheet 1 determined as a defective product is not transported to the finished product hopper 40, and the defective sheet is discharged by a discharge means not shown. The mechanism is discharged separately and moved to a defective hopper not shown.

A cutting device 41 is arranged on the downstream side of the continuous feed roller 36. Then, the waste film portion 42 remaining in a strip shape after being punched by the sheet punching device 37 is guided by the tension roller 35 and the continuous feed roller 36 to the cutting device 41. Here, the continuous feed roller 36 is pressed by the driven roller to carry out the conveying operation while pinching the waste film portion 42.

The cutting device 41 has a function of cutting the waste film portion 42 into a predetermined size. The cut waste film portion 42 (waste material) is stored in the waste hopper 43, and is separately disposed of.

In addition, the above-mentioned rollers 14, 19, 20, 28, 29, 30, etc. have a positional relationship in which the roller surface and the bag portion 2 are opposed to each other, but because the intermittent feed roller 14 and the like are formed on the surface of each roller for storage The concave part of the bag part 2 does not collapse. In addition, the bag portion 2 performs the feeding operation while being accommodated in the recesses of the rollers such as the intermittent feeding roller 14, so that the intermittent feeding operation or the continuous feeding operation is surely performed.

The outline of the PTP packaging machine 10 is as described above. Hereinafter, the configuration of the above-mentioned X-ray inspection device 45 will be described in detail with reference to the drawings. However, in the illustrations of FIG. 6 and the like, a part of the configuration such as the bag portion 2 of the PTP film 9 is omitted for simplification.

As shown in Figs. 5-10, the X-ray inspection device 45 includes: an X-ray irradiation device 51 for irradiating the PTP film 9 (especially the container film 3 and the cover film 4) with X-rays that can penetrate the PTP film 9; The X-ray sensor camera 52 of the X-ray penetration image of the X-ray PTP film 9; and the control processing device 53 for implementing the drive control of the X-ray irradiation device 51 or the X-ray sensor camera 52, etc. Various controls, image processing, and arithmetic processing in the X-ray inspection apparatus 45.

In this embodiment, "X-rays" are equivalent to "electromagnetic waves." In addition, the "X-ray penetration image" constitutes the "electromagnetic wave penetration image", the "control processing device 53" constitutes the "image processing means", and the "X-ray irradiation device 51" constitutes the "electromagnetic wave irradiation means". The "X-ray sensor camera 52" constitutes the "imaging means".

In addition, the X-ray irradiation device 51 and the X-ray sensor camera 52 are housed in a shielding box (not shown) made of a material that can shield X-rays. The shielding box is not only provided with a slit-shaped opening through which the PTP film 9 passes, but also has a structure that suppresses leakage of X-rays to the outside as much as possible.

The X-ray irradiation device 51 is arranged on the container film 3 side of the PTP film 9 that is conveyed downward in the vertical direction. The X-ray irradiation device 51 has an irradiation source 51a for irradiating X-rays at a position opposed to the center portion of the PTP film 9 in the width direction. The irradiation source 51a has an X-ray generation source, a collimator (each not shown) for concentrating X-rays, and is configured in a fan beam shape that can have a predetermined spread (fan angle) in the width direction of the PTP film 9 The PTP film 9 is irradiated with X-rays from the container film 3 side. In addition, it may be configured to irradiate X-rays in a cone beam shape that also has a predetermined spread in the transport direction of the PTP film 9.

The X-ray sensor camera 52 faces the X-ray irradiation device 51 in a direction orthogonal to the transport direction of the PTP film 9, and is arranged on the opposite side of the X-ray irradiation device 51 via the PTP film 9 (this embodiment In the form, the cover film is 4 sides).

The X-ray sensor camera 52 is an X-ray sensor 52a having a row of X-ray detecting elements that can detect X-rays penetrating the PTP film 9 side by side, and can detect one of the X-rays penetrating the PTP film 9 constitute. In this embodiment, the X-ray sensor camera 52 can capture (expose) X-rays penetrating the PTP film 9. Examples of the X-ray detection element include CCD (Charge Coupled Device) having a light conversion layer of a scintillator. In this embodiment, the "X-ray sensor 52a" constitutes the "detection unit".

In addition, the PTP film 9 is bent and deformed into an arc shape by the deformation device 54 and the maintenance device 55 described later, and is conveyed to the X-ray irradiation device 51 and the X-ray sensor camera 52 while maintaining the deformed state The X-ray sensor 52a is configured to form a curved shape along the curved shape of the PTP film 9. In this embodiment, the X-ray sensor 52a is formed in an arc-shaped curved shape centered on the irradiation source 51a in a cross section that passes through the irradiation source 51a and is orthogonal to the transport direction of the PTP film 9.

The X-ray transmission image data obtained by the X-ray sensor camera 52 is converted into a digital signal (image signal) inside the camera 52 after a predetermined amount of the PTP film 9 is transported. The format is output to the control processing device 53 (the image data storage device 74 described below). Then, the control processing device 53 performs various inspections described later by performing predetermined processing or the like on the X-ray transmission image.

Next, the control processing device 53 will be described. The control processing device 53 is provided with: a microcomputer 71 in charge of the overall control of the X-ray inspection device 45; an input device 72 composed of a keyboard, mouse, touch panel, etc.; a display device 73 with a display screen such as CRT or liquid crystal; Image data storage device 74 for storing various image data, etc.; calculation result storage device 75 for storing various calculation results, etc.; setting data storage device 76 for storing various information in advance, etc. (refer to FIG. 5). In addition, these devices 72 to 76 are electrically connected to the microcomputer 71.

The microcomputer 71 is equipped with a CPU71a as a computing means, a ROM71b for storing various programs, and a RAM71c for temporarily storing various data such as arithmetic data or input/output data, etc., and controls various controls in the control processing device 53, and can be The PTP packaging machine 10 is connected to transmit and receive various signals.

In addition, the microcomputer 71 drives and controls the X-ray irradiation device 51 or the X-ray sensor camera 52, and executes the imaging process of acquiring the X-ray transmission image of the PTP film 9, and inspects the PTP based on the X-ray transmission image. The inspection process of the sheet 1, the output process of outputting the inspection result of the inspection process to the defective sheet ejection mechanism of the PTP packaging machine 10, etc.

The image data storage device 74 is for storing the X-ray penetration image obtained by the X-ray sensor camera 52 and the binarized image after the binarization process during the inspection or the binarized image after the mask process. Mask various images (image data) such as images.

The operation result memory device 75 is for storing inspection result data or statistical data after the inspection result data is processed by probability statistics. Such inspection result data or statistical data can be appropriately displayed on the display device 73.

The setting data storage device 76 is used to store various information used in the examination. It is set to store various information such as the shape and size of the PTP sheet 1, the bag portion 2 and the tablet 5, or the shape and size of the sheet frame used to divide the inspection area (the area to be inspected), and to divide The shape and size of the bag frame in the area of the bag portion 2, the brightness threshold value in the binarization process, the judgment reference value for various quality judgments (for example, the reference lozenge area value Lo described later), etc. In the present embodiment, as the luminance threshold for performing the binarization process, for example, two kinds of the first threshold δ1 and the second threshold δ2 are set. The first threshold value δ1 is used when the quality of the tablet 5 is judged, and the second threshold value δ2 is used when the quality of the flange portion 3a is judged.

In addition, the X-ray inspection apparatus 45 includes a deformation device 54 and a maintenance device 55. In the present embodiment, the "deformation device 54" constitutes the "deformation means", and the "maintenance device 55" constitutes the "deformation state maintenance means".

The deformation device 54 is arranged upstream of the X-ray irradiation device 51 along the conveying path of the PTP film 9 so as to protrude toward the opposite side of the irradiation source 51a of the X-ray irradiation device 51 to make PTP film 9 bends. The deformation device 54 includes a deformation roller 54a and a deformation pressing roller 54b. In this embodiment, the "deformation pressing roller 54b" constitutes a "pressing roller".

The deforming roller 54a is supported in a freely rotatable state by an unshown operating shaft, and has an outer peripheral surface whose circumference gradually decreases from both ends to the center along the direction of its rotation axis Ar1 (see FIG. 9 ). When the outer peripheral surface of the deforming roller 54a is in contact with the PTP film 9 (the cover film 4 in this embodiment), the parts other than the center in the width direction of the PTP film 9 are pressed toward the side where the X-ray irradiation device 51 is located. Furthermore, the PTP film 9 is bent so as to protrude toward the opposite side of the irradiation source 51 a of the X-ray irradiation device 51.

In addition, in this embodiment, when the deformation roller 54a and the X-ray irradiation device 51 are projected along the conveying direction of the PTP film 9, the projected deformation roller 54a is located in the projected X-ray irradiation device on the outer peripheral surface The surface on the side of 51 is configured to have an arc shape centered on the irradiation source 51a of the X-ray irradiation device 51 to be projected. Therefore, in the present embodiment, the PTP film 9 is bent in an arc shape centered on the irradiation source 51a in a cross section that passes through the irradiation source 51a and is orthogonal to the transport direction of the PTP film 9.

The pressing roller 54b for deformation is supported in a freely rotatable state by an unshown operating shaft, and has an outer peripheral surface whose circumference gradually increases from both ends to the central part along the direction of its own rotation axis Ar2 (see Figure 9). The outer peripheral surface of the pressing roller 54b for deformation becomes press-contactable to the roller 54a for deformation, and the PTP film 9 is sent between both rollers 54a and 54b. The fed PTP film 9 is in a state of being pinched by the two rollers 54a and 54b.

In addition, in the present embodiment, when the deformation pressing roller 54b and the X-ray irradiation device 51 are projected along the conveying direction of the PTP film 9, the outer peripheral surface of the deformation pressing roller 54b is located in the projected X-ray The surface on the side of the irradiation device 51 is configured in an arc shape with the irradiation source 51a of the X-ray irradiation device 51 projected as a center. Thereby, the PTP film 9 can be more surely bent in an arc shape centered on the irradiation source 51a.

Moreover, in this embodiment, the pressing roller 54b for deformation|transformation is comprised so that the part corresponding to the label part 8 in the PTP film 9 may contact, and the width direction center part of the bag part 2 does not exist. Thereby, the contact area of the pressing roller 54b for deformation to the PTP film 9 can be sufficiently ensured, and the pressure applied to the PTP film 9 from the pressing roller 54b for deformation can be reduced, and the load applied to the PTP film 9 can be reduced.

The maintenance device 55 is arranged downstream of the X-ray irradiation device 51 along the conveying path of the PTP film 9, at least at the position where the X-rays from the X-ray irradiation device 51 are irradiated, to maintain the deformation device 54 The shape of the bent PTP film 9. The maintenance device 55 includes a maintenance roller 55a and a maintenance pressing roller 55b. In this embodiment, the maintenance roller 55a has the same structure as the deformation roller 54a, and the maintenance pressure roller 55b has the same structure as the deformation pressure roller 54b. In other words, the deformation device 54 and the maintenance device 55 are configured by devices having the same configuration.

In addition, the X-ray inspection device 45 is provided with a straight roller 56 as a restoration means downstream of the maintenance device 55 along the conveying direction of the PTP film 9. The straight roller 56 is supported in a freely rotatable state by an operating shaft (not shown), and its outer diameter is constant along the direction of its rotation axis. The PTP film 9 is hung on the straight roller 56, and the outer peripheral surface of the straight roller 56 contacts the PTP film 9 (cover film 4), and the PTP film 9 can be restored to a flat state.

In addition, the straight roll 56 of the present embodiment is configured such that the PTP film 9 is pulled to the tensioned side by elastic force. Thereby, the PTP film 9 can be restored to a flat state more reliably. In addition, between the film receiving roller 20 and the intermittent feed roller 28 (that is, the position corresponding to the location of the X-ray inspection device 45), it is prevented that the film receiving roller 20 and the intermittent feed roller 28 are transported by the difference The relaxation of the PTP film 9 can keep the PTP film 9 in a constant tension state.

Next, the manufacturing process of the PTP sheet 1 including the inspection process performed by the X-ray inspection device 45 will be described.

As shown in FIG. 11, first, in the bag portion forming process of step S1, the bag portion 2 is continuously formed on the container film 3 by the bag portion forming device 16. Next, in the filling process of step S2, the tablet 5 is filled into the accommodation space 2a of the bag 2 by the tablet filling device 21.

After the filling process S2, the installation process of step S3 is performed. In the installation process, the transported container film 3 and cover film 4 are fed between the aforementioned two rollers 20 and 23 to install the cover film 4 on the container film 3 to obtain the PTP film 9.

After that, the inspection process of step S4 using the X-ray inspection device 45 is performed. In the inspection process of step S4, the continuously conveyed PTP film 9 is deformed into a curved shape by the deforming device 54 and the maintaining device 55, and after maintaining the deformed state, it sequentially moves from the outside to the inside of the aforementioned shielding box Continue to move in.

Then, in the irradiation process of step S41, the X-ray irradiation device 51 and the X-ray sensor camera 52 are driven and controlled by the microcomputer 71 to irradiate the curved PTP film 9 with X-rays (see FIG. 10). At this time, since the PTP film 9 is in the shape of an arc centered on the irradiation source 51a, the distance from the irradiation source 51a to each part of the PTP film 9 becomes approximately equal, and the PTP film 9 is irradiated from the X-ray irradiation device 51 The X-ray intensity of each part is roughly the same.

Moreover, in the imaging process of step S42, the X-ray sensor 52a acquires a one-dimensional X-ray transmission image of the X-rays that have penetrated the PTP film 9 every time the PTP film 9 is transported a predetermined amount. At this time, because the X-ray sensor 52a is set in a curved shape along the curved shape of the PTP film 9, the incident angle α of X-rays penetrating the PTP film 9 and incident on the X-ray sensor 52a is not Although the position of the penetrating PTP film 9 differs greatly, each part of the X-ray sensor 52a is substantially the same (refer to FIG. 10).

Then, the X-ray penetration image obtained by the X-ray sensor camera 52 is converted into a digital signal inside the camera 52 and output to the control processing device 53 (image data memory device 74) in the form of a digital signal .

In more detail, in a state where the PTP film 9 is constantly irradiated with X-rays from the X-ray irradiation device 51, when a timing signal is input from the encoder to the microcomputer 71, the microcomputer 71 starts to use the X-ray sensor camera 52 Perform exposure processing.

Then, when the next timing signal is input, the charges accumulated in the light-receiving part such as the photodiode before that are combined and transferred to the shift register. Next, the charge transferred to the shift register is sequentially output as an image signal (X-ray transmission image) in accordance with the transfer clock signal until the next timing signal is input.

In other words, the time from the time when the predetermined timing signal is input to the encoder until the next timing signal is input becomes the exposure time in the X-ray sensor camera 52.

In addition, in this embodiment, each time the PTP film 9 is transported, the X-ray sensor camera 52 obtains the width of the X-ray sensor 52a in the transport direction of the PTP film 9, which is equivalent to a CCD X-ray penetration image data of width and length. Of course, a configuration different from this can also be adopted.

The image data storage device 74 continuously sequentially stores the X-ray penetration image data output from the X-ray sensor camera 52 in a time series.

Then, the series of processes described above are repeated every time the PTP film 9 is transported a predetermined amount, and the image data storage device 74 stores X-ray transmission images of the two PTP sheets 1 that are finally aligned in the width direction of the PTP film 9. In this way, when the X-ray transmission image of the PTP sheet 1 as a product is acquired, the microcomputer 71 executes the quality determination process of step S43.

Next, the quality judgment process (inspection procedure) will be described in detail with reference to the flowchart of FIG. 12. In addition, the quality judgment process shown in FIG. 12 is a process performed on each PTP sheet 1 as a product. Therefore, in this embodiment, every time the PTP film 9 is conveyed in an amount equivalent to one PTP sheet 1, the quality judgment process is performed on the parts of the two PTP sheets 1 included in the X-ray transmission image.

First, in step S4301, an inspection image acquisition process is executed. In detail, the image of the PTP sheet 1 as the inspection target in the X-ray transmission image is read out from the image data storage device 74 as an inspection image.

Next, in step S4302, the binarization process is performed. In detail, the X-ray penetration image obtained in the above step S4301 as the inspection image is generated as a binary image that is binarized at the lozenge abnormality detection level, and this is used as the binarization for the lozenge inspection The modified image data is stored in the image data storage device 74. Here, for example, the X-ray transmission image is converted into a binarized image by using "1 (bright part)" for the first threshold value δ1 or more, and "0 (dark part)" for less than the first threshold value δ1.

At the same time, the X-ray penetration image obtained in the above step S4301 as the inspection image is binarized with the flange abnormality detection level, and this is used as the binarized image for flange inspection The image is stored in the image data storage device 74. Here, for example, the X-ray transmission image is converted into a binarized image by using "1 (bright part)" for the second threshold value δ2 or more, and "0 (dark part)" for less than the second threshold value δ2.

Next, the microcomputer 71 executes the block processing in step S4303. In detail, block processing is performed on the various binarized images obtained in step S4302. As for the block processing, the processing of specifying the connected components for "0 (dark part)" and "1 (bright part)" of the binarized image is performed, and the labeling process of labeling each connected component is performed. Here, the occupied area of each connected component that is respectively specified is represented by the number of points corresponding to the pixels of the X-ray sensor camera 52. Block processing is performed on the various binarized image data obtained in the above step S12.

Next, the microcomputer 71 executes the inspection target identification process of step S4304. In detail, from the binarized image for inspection of the lozenge, among the connected components of "0 (dark part)" specified by the block processing of step S4303, the connected component equivalent to the tablet 5, namely Lozenge area. The connecting component equivalent to the tablet 5 can be specified by determining a connecting component containing a predetermined coordinate, a connecting component belonging to a predetermined shape, or a connecting component belonging to a predetermined area. At the same time, the connection component of "0 (dark part)" specified by the block processing of step S4303 based on the binary image data for flange part inspection is specified as the connection component equivalent to the foreign object, that is, the foreign object area.

Next, the microcomputer 71 executes the masking process of step S4305. In detail, by setting the slice frame and the bag frame to the binarized image for tablet inspection, the inspection area in the binarized image is divided, and the binarization corresponding to the inspection area The area outside the pocket 2 area in the image (that is, the area corresponding to the flange portion 3a) is masked. The image that has undergone such a masking process is stored in the image data storage device 74 as a masked image for tablet inspection. At the same time, by setting the sheet frame and the bag frame to the binarized image for inspection of the flange portion, the inspection area in the binarized image is divided, and the binarization corresponding to the inspection area is performed. The pocket 2 area in the image is masked. The image that has undergone such a masking process is stored in the image data storage device 74 as a masked image for flange part inspection.

In addition, in this embodiment, the setting positions of the sheet frame and the bag frame are determined in advance by the relative positional relationship with the PTP film 9. Therefore, in this embodiment, the setting positions of the sheet frame and the bag frame are not adjusted every time in response to the inspection image, but it is not limited by this, and it can also be configured to take into account the occurrence of offset, etc., based on the information obtained from the inspection image. The information is suitable for adjusting the setting positions of the sheet frame and the bag frame.

Next, in step S4306, the microcomputer 71 sets the value of the good product flag of the lozenge of all the bag parts 2 to "0". In addition, the “pill good product flag” indicates the result of determining the quality of the pill 5 contained in the corresponding bag 2 and is set in the calculation result storage device 75. Then, when the tablet 5 contained in the predetermined bag 2 is judged to be a good product, the value of the corresponding tablet good product flag is set to "1".

In the next step S4307, the microcomputer 71 sets the value C of the bag number count set in the calculation result storage device 75 to the initial value "1". In addition, the "bag number" refers to the serial number set corresponding to the 10 pockets 2 in the inspection area of one PTP sheet 1, and the value C counted by the bag number (hereinafter, simply referred to as "bag number C" ") The position of the bag 2 can be specified.

Then, in step S4308, the microcomputer 71 determines whether the bag number C is equal to or less than the number of bags N ("10" in this embodiment) per inspection area (per PTP sheet 1).

If it is determined to be YES in step S4308, the process moves to step S4309, and the microcomputer 71 extracts the mask image from the above-mentioned lozenge inspection to the bag part 2 corresponding to the current bag number C (for example, C=1) The area value of the lozenge region (connected component) is a block above the reference lozenge area value Lo (excluding blocks smaller than Lo).

Next, in step S4310, the microcomputer 71 determines whether the number of blocks in the bag portion 2 is "1". If it is judged as yes here, that is, if the number of blocks is "1", the process moves to step S4311. On the other hand, when it is judged as No, the tablet 5 contained in the bag part 2 corresponding to the current bag number C is regarded as a defective product, and the process proceeds to step S4313 as it is.

In step S4311, the microcomputer 71 determines whether the shape, length, area, etc. of the tablet 5 are appropriate. If it is determined to be YES here, the process moves to step S4312. On the other hand, when it is judged as No, the lozenge 5 contained in the bag part 2 corresponding to the current bag number C is regarded as a defective product, and the process proceeds to step S4313 as it is.

In step S4312, the microcomputer 71 determines that the tablet 5 contained in the bag portion 2 corresponding to the current bag number C is a good product, and the value of the tablet good product flag corresponding to the bag number C is set to "1". After that, the process proceeds to step S4313.

In step S4313, the microcomputer 71 adds "1" to the current bag number C to set a new bag number C. After that, return to step S4308.

Then, if the newly set bag number C is still less than the bag number N ("10" in this embodiment), the process proceeds to step S4309 again, and the above-mentioned series of tablet inspection processing is repeated.

On the one hand, when it is determined that the newly set bag number C exceeds the number of bags N, that is, if it is determined to be YES in step S4308, it is deemed that the quality determination process related to all the tablets 5 contained in the bag portion 2 has ended. , Move to step S4314.

In step S4314, the microcomputer 71 determines whether the flange portion 3a is a good product. Specifically, it is determined, for example, whether or not there is a foreign object of a predetermined size or more in the area of the flange portion 3a based on the masked image for inspection of the flange portion.

If it is determined to be YES here, the process moves to step S4315. On the other hand, when it is judged as No, that is, when it is judged that the flange portion 3a is abnormal, the process proceeds to step S4317.

In step S4315, it is determined by the microcomputer 71 whether the value of the tablet quality flag of the whole bag portion 2 in the inspection area is "1". Thereby, it is determined whether the PTP sheet 1 corresponding to the inspection area is a good product or a defective product.

Here it is judged as yes, that is, all the tablets 5 contained in the bag 2 in the inspection area are "good", and there is no tablet 5 (bag 2) judged as "bad" In the case of, in step S4316, the PTP sheet 1 corresponding to the inspection area is determined to be "good", and the quality determination process ends.

On the other hand, if it is judged as No in step S4315, that is, if there is only one lozenge 5 (pocket 2) judged as "defective" in the inspection area, the process moves to step S4317.

In step S4317, the microcomputer 71 determines that the PTP sheet 1 corresponding to the inspection area is "defective", and the quality determination process ends.

In addition, in the good product determination processing of step S4316 and the defective product determination processing of step S4317, the microcomputer 71 stores the inspection result of the PTP sheet 1 corresponding to the inspection area in the calculation result storage device 75, and performs the processing for the PTP packaging machine 10 (Contains defective sheet ejection mechanism) output.

Returning to FIG. 11, after the inspection process of step S4, in the sewing thread forming process of step S5, the sewing thread forming device 33 forms the sewing thread at the predetermined position of the PTP film 9. In addition, in the engraving process of the next step S6, the engraving device 34 sets the engraving on the PTP film 9. After that, the cutting process of step S7 is performed to end the manufacturing process of the PTP sheet 1. In the cutting process, the PTP film 9 is punched by the sheet punching device 37 to cut the PTP sheet 1 from the PTP film 9 to produce the PTP sheet 1.

As described in detail above, according to this embodiment, the deformation device 54 is used to bend the PTP film 9 so as to protrude toward the opposite side of the X-ray irradiation device 51, and the PTP film 9 is maintained by the maintenance device 55 The PTP film 9 is irradiated with X-rays in the curved state, and X-ray transmission images are obtained at the same time. Therefore, compared with the case where the PTP film 9 is inspected in a flat state, the distance difference from the X-ray irradiation source 51a to the positions of the PTP film 9 can be reduced, and the X-rays irradiated to each position of the PTP film 9 can be suppressed. The intensity is uneven. In addition, because the X-ray sensor 52a is set in a curved shape along the curved shape of the PTP film 9, the incident angle of the X-ray that penetrates the PTP film 9 and is incident on the X-ray sensor 52a is not affected by the penetration. The position of the PTP film 9 differs greatly. These effects interact with each other, and the obtained X-ray penetration image becomes more homogeneous in each position. Thereby, when the inspection of the PTP sheet 1 is performed based on the X-ray transmission image, it becomes unnecessary to set a threshold value for each column of the tablet 5, and it is possible to suppress a decrease in inspection efficiency. In addition, it is possible to more reliably suppress the variation of the inspection result due to the position difference in the PTP film 9, and to more reliably guarantee the uniformity of the inspection quality.

In addition, in the present embodiment, the PTP film 9 is configured to be bent so as to form an arc shape with the irradiation source 51a as the center. Therefore, the distance from the irradiation source 51a to each position of the PTP film 9 can be approximately constant, and the intensity of X-rays irradiated at each position of the PTP film 9 can be approximately equal. In addition, the incident angle of the X-rays penetrating the PTP film 9 and incident on the X-ray sensor 52a can be made substantially the same regardless of the position of the penetrating PTP film 9. The result of this is that the available X-ray penetration image becomes more homogeneous in each position.

In addition, in the present embodiment, the deformation device 54 includes a deformation roller 54a having an outer peripheral surface whose circumference changes gradually, and the PTP film 9 is bent when the deformation roller 54a contacts the PTP film 9. Therefore, the PTP film 9 can be smoothly bent without applying an excessive load to the transported PTP film 9. As a result, it is possible to more reliably prevent the degradation of the quality of the manufactured PTP sheet 1. In addition, since the deforming device 54 can be realized with a relatively simplified configuration, it is possible to achieve the miniaturization, cost reduction, and maintenance convenience of the device.

At the same time, since the deformation device 54 includes the deformation pressing roller 54b that sandwiches the PTP film 9 with the deformation roller 54a, the PTP film 9 can be more surely bent into a desired shape. Therefore, the above-mentioned various functions and effects related to inspection can be exerted more effectively.

In addition, the deformation device 54 and the maintenance device 55 are composed of the same device. Therefore, compared with the case where the deforming device 54 and the maintaining device 55 are composed of different devices, it is possible to achieve a reduction in manufacturing cost, ease of part management, and improvement in maintainability.

Furthermore, the straight roller 56 can restore the curved PTP film 9 to a flat state. Therefore, it is possible to more accurately (as expected) perform various treatments on the inspected PTP film 9 (for example, various treatments in the stitching process, marking process, and cutting process). In addition, since the straight roller 56 is used as the restoring means, the PTP film 9 can be made into a flat state more reliably and easily, and the structure of the restoring means can be prevented from being complicated.

In addition, it is not limited to the description content of the above-mentioned embodiment, for example, it can also be implemented as follows. Needless to say, other application examples and modified examples that are not illustrated below are of course possible.

(a) In the above embodiment, the deforming roller 54a has a configuration in which the circumference of the roller 54a gradually decreases from the ends to the center along the direction of the rotation axis Ar1, but it may be as shown in FIGS. 13 and 14 (in addition, in As shown in FIG. 13 and the like, which are not shown in the bag portion 2), the deformation roller 57a is configured to have an outer peripheral surface whose circumference gradually increases from the both end portions toward the center portion in the direction of the rotation axis Ar3. According to this deforming roller 57a, by pressing the center of the PTP film 9 in the width direction toward the side where the X-ray sensor camera 52 is located, the PTP film 9 can be protruded toward the side opposite to the irradiation source 51a. The way bends.

In addition, in this case, a concave portion for accommodating the bag portion 2 may be provided on the outer peripheral surface of the deforming roller 57a. Moreover, it may be comprised so that the pressure roller 57b for deformation|transformation and the both ends of the width direction of the PTP film 9 may contact at least. Furthermore, it is also possible to set the maintenance roller 58a to the same configuration as the deformation roller 57a, and to set the maintenance pressing roller 58b to the same configuration as the deformation pressing roller 57b, so that the deformation device 57 and The maintenance devices 58 are composed of devices having the same configuration.

In addition, the deformation roller may be one that bends the PTP film 9 by contacting only one of the center portion in the width direction and both end portions in the width direction of the PTP film 9.

(b) In the above-mentioned embodiment, the PTP film 9 in a state where the bag portion 2 protrudes toward the X-ray irradiation device 51 side is configured to be bent. On the other hand, as shown in FIG. 15, it may be configured such that the PTP film 9 in a state where the bag portion 2 protrudes toward the opposite side of the X-ray irradiation device 51 is bent. In this case, the PTP film 9 is bent so that the bag portion 2 is arranged outside the curve. Therefore, the PTP film 9 can be bent more reliably and smoothly, and the bag portion 2 can be prevented from collapsing and deforming more reliably.

In addition, in this case, the container film 3 having the bag portion 2 is arranged on the X-ray sensor camera 52 side, and the cover film 4 is arranged on the X-ray irradiation device 51 side. Therefore, the "container film 3" constitutes the "second film", and the "cover film 4" constitutes the "first film".

(c) The configuration of the packaging sheet used as the inspection target is not limited to the PTP sheet 1 of the above-mentioned embodiment. For example, SP sheet may be used as an inspection object.

As shown in Fig. 16, a general SP sheet 90 is formed by continuously overlapping two strip-shaped films 91, 92 made of an opaque material with aluminum as the base material, and filling one side between the two films 91, 92 The two films 91, 92 around the storage space 93 (mesh pattern part in FIG. 16) are joined to each other to form a tape-shaped package by leaving a bag-shaped storage space 93 around the tablet 5 on one side. After the film is formed, the packaging film is cut into rectangular slices.

In addition, in the SP sheet 90, in terms of cutting lines that can be cut in units of small sheets 94 containing one storage space 93, it is also possible to form longitudinal stitches 95 formed along the longitudinal direction of the sheet. A cross stitch 96 formed in the direction of the short side of the sheet. In addition, the SP sheet 90 may be provided with a label portion 97 on which various information ("ABC" in this embodiment) is printed at one end in the longitudinal direction of the sheet.

(d) In the above embodiment, although the PTP film 9 is bent into an arc shape centered on the irradiation source 51a in the irradiation process and the imaging process, if it is convex toward the opposite side of the irradiation source 51a, The bending aspect of the PTP film 9 can also be changed appropriately. Therefore, in a cross section that passes through the irradiation source 51a and is orthogonal to the transport direction of the PTP film 9, the PTP film 9 may be bent so as to have an arc shape centered at a position (point) different from the irradiation source 51a. In addition, the PTP film 9 may be bent in an elliptical arc shape.

(e) In the above-mentioned embodiment, the deforming device 54 and the maintaining device 55 are respectively composed of devices of the same configuration, but the deforming device 54 and the maintaining device 55 may be respectively constructed of different devices.

(f) The arrangement or number of pockets 2 of 1 unit of PTP sheet is not limited in any way by the aspect (2 rows, 10) of the above embodiment. For example, it can be used to have 3 rows of 12 pockets 2 (containing The type of space 2a) is a PTP sheet composed of various arrangements and number of pieces (the same applies to the above-mentioned SP sheet). Of course, the number of pockets (accommodating spaces) included in one small sheet is not limited in any way by the above-mentioned embodiment.

(g) In the PTP sheet 1 of the above embodiment, as a cut line, a saddle stitch line 7 is formed by intermittently arranging cuts penetrating the thickness direction of the PTP sheet 1, but the cut line is not limited by this, and can be adapted Different configurations are adopted for the material of the container film 3 and the cover film 4, etc. For example, it may be configured to form a non-penetrating tangent line such as a slit (half tangent line) having a substantially V-shaped cross section. In addition, it may be a configuration in which a cut line such as the stitching line 7 is not formed.

(h) The materials and layer structure of the first film and the second film are not limited to the structure of the container film 3 and the cover film 4 of the above-mentioned embodiment. For example, in the above-mentioned embodiment, although the container film 3 and the cover film 4 are formed using a metal material such as aluminum as a base material, they are not limited to this, and other materials may also be used. It is also possible to use synthetic resin materials that do not penetrate, such as visible light.

(i) The configuration of the packaging film is not limited to the above embodiment, and other configurations may be adopted.

In the above-mentioned embodiment, the PTP film 9 is configured such that a plurality of pockets 2 corresponding to the amount of two sheets are arranged along its width direction, but it is not limited to this. For example, it may be arranged along its width direction with and The structure of several pockets 2 corresponding to 1 sheet. Of course, the PTP film 9 may also have a configuration in which several pockets 2 corresponding to the weight of three or more sheets are arranged along the width direction.

Moreover, in the above-mentioned embodiment, it is comprised so that the part corresponding to each label part 8 of the PTP sheet 1 of 2 sheets was arrange|positioned in the center part of the width direction of the PTP film 9. On the other hand, it can also be comprised so that the part corresponding to each label part 8 of the PTP sheet 1 of 2 sheets may be arrange|positioned at the width direction both ends of the PTP film 9. In addition, it may be configured such that the part corresponding to the label portion 8 of one PTP sheet 1 is arranged in the center of the width direction of the PTP film 9 in the two PTP sheet 1 and corresponds to the label portion 8 of the other PTP sheet 1 The location is arranged at the end of the PTP film 9 in the width direction.

(j) The configuration of the electromagnetic wave irradiation means is not limited to the above-mentioned embodiment. In the above-mentioned embodiment, although the structure is irradiated with X-rays as electromagnetic waves, it is not limited to this, and other electromagnetic waves that penetrate the PTP film 9 such as megahertz electromagnetic waves may be used.

(k) The configuration of the imaging means is not limited to the above-mentioned embodiment. For example, in the above-mentioned embodiment, although a CCD camera (X-ray sensor camera 52) using a scintillator is used as the imaging means, it is not limited to this, and a camera that directly enters X-rays and captures images can also be used.

In the above-mentioned embodiment, although the X-ray sensor camera 52 in which one row of CCDs are arranged side by side is used as the imaging means, it is not limited to this. For example, a plurality of rows of CCDs in the conveying direction of the PTP film 9 may be used ( X-ray TDI (Time Delay Integration) camera for detecting element column. Thereby, the inspection accuracy and inspection efficiency can be further improved.

(1) The configuration, arrangement position, etc. of the X-ray inspection device 45 are not limited to the above-mentioned embodiment.

For example, in the above-mentioned embodiment, although the X-ray inspection device 45 is arranged at the position where the PTP film 9 is conveyed in the vertical direction, it is not limited to this. For example, the position where the PTP film 9 is conveyed in the horizontal direction or The X-ray inspection device 45 is arranged at the position of the diagonal conveyance.

In addition, it may be configured to match the size or layout of the PTP film 9 and include the X-ray irradiation device 51 and the X-ray sensor camera 52 along the conveying direction of the PTP film 9 or in the contact and separation direction of the PTP film 9 The structure of the mobile position adjustment mechanism (position adjustment means).

(m) In the above embodiment, the straight roll 56 as a restoring means has a function of applying tension to the PTP film 9, but it may not have such a function.

In addition, as a restoration means, the PTP film 9 can be bent on the opposite side of the bending direction of the PTP film 9 by the deforming device 54. In this case, the deforming device 54 and the maintaining device 55 effectively correct the curved shape of the PTP film 9 so that the PTP film 9 can be restored to a flat state more reliably.

(n) In the above-mentioned embodiment, although the tablet 5 is mentioned as the content, the content is not limited thereto, and may be, for example, capsules, foodstuffs, small parts, etc.

1: PTP sheet (packaging sheet) 2: Bag Department 2a: containment space 3: Container film (the first film) 4: Cover film (2nd film) 5: lozenge (contents) 9: PTP film (packaging film) 10: PTP packaging machine (packaging sheet manufacturing device) 45: X-ray inspection device (inspection device) 51: X-ray irradiation device (electromagnetic wave irradiation means) 51a: Irradiation source 52: X-ray sensor camera (photography means) 52a: X-ray sensor (detection department) 53: Control processing device (image processing device) 54: Deformation device (deformation means) 54a: Deformation roller 54b: Deformation pressing roller (pressing roller) 55: Maintenance device (means for maintaining deformed state) 56: Straight roller (recovery means)

Figure 1 is a perspective view of a PTP sheet. Figure 2 is a partial enlarged cross-sectional view of the PTP sheet. Figure 3 is a perspective view of a PTP film. Figure 4 is a schematic diagram of the PTP packaging machine. Figure 5 is a block diagram showing the electrical structure of the X-ray inspection device. Fig. 6 is a schematic diagram showing the schematic configuration of an X-ray inspection apparatus. Fig. 7 is a schematic diagram showing the positional relationship of the X-ray irradiation device, the X-ray irradiation device, and the PTP film. Fig. 8 is a perspective view schematically showing the schematic configuration of the deformation device and the maintenance device. Fig. 9 is a sectional view taken along line J-J in Fig. 8. Fig. 10 is a schematic diagram showing the positional relationship between the PTP film and the X-ray irradiation device. Figure 11 shows the flow chart of the manufacturing process. Figure 12 shows the flow chart of the quality judgment process. Fig. 13 is a perspective view schematically showing the schematic configuration of a deformation device and a maintenance device in another embodiment. Fig. 14 is a sectional view taken along the line K-K in Fig. 13. Fig. 15 is a schematic diagram showing a PTP film or the like bent so that the bag portion is located outside the bend in another embodiment. Figure 16 shows a plan view of the SP sheet.

2: Bag Department 3: Container film (the first film) 9: PTP film (packaging film) 51: X-ray irradiation device (electromagnetic wave irradiation means) 52: X-ray sensor camera (photography means) 52a: X-ray sensor (detection department) 54: Deformation device (deformation means) 54a: Deformation roller 54b: Deformation pressing roller (pressing roller) 55: Maintenance device (means for maintaining deformed state) 55a: Maintenance roller 55b: Pressure roller for maintenance

Claims (10)

An inspection device is used when manufacturing a strip-shaped packaging film and cutting the packaging film to obtain a packaging sheet. The strip-shaped packaging film is installed with a strip-shaped first film made of opaque material and made of opaque The second film in the form of a strip made of material and containing contents in the containing space formed between the two films is characterized by: The electromagnetic wave irradiation means has an irradiation source that irradiates the conveyed packaging film from the first film side with electromagnetic waves that can penetrate the packaging film; The imaging means has a detection unit arranged on the side of the second film so that the packaging film and the electromagnetic wave irradiation means are opposed to each other, and can detect electromagnetic waves penetrating the packaging film, and obtain electromagnetic waves based on the electromagnetic waves penetrating the packaging film Penetrating image; and The image processing means can perform the inspection of the aforementioned packaging sheet based on the electromagnetic wave penetration image obtained by the aforementioned photographing means, And has: The deforming means is arranged upstream of the electromagnetic wave irradiation means along the transport path of the packaging film, and bends the packaging film in such a way that it protrudes toward the opposite side of the irradiation source of the electromagnetic wave irradiation means; and The means for maintaining the deformed state is arranged downstream of the electromagnetic wave irradiation means along the conveying path, and at a position where at least the electromagnetic wave from the electromagnetic wave irradiation means is irradiated, the packaging film bent by the deforming means can be maintained shape, The detection part of the imaging means has a curved shape along the curved shape of the packaging film. Such as the inspection device of claim 1, where The deformation means is configured to bend the packaging film in an arc shape centered on the irradiation source. Such as the inspection device of claim 1, where A restoration means is provided, which is arranged downstream of the deformed state maintaining means along the conveying path to restore the packaging film to a flat state. Such as the inspection device of claim 3, where The aforementioned restoration means is provided with a straight roller that is rotatable and has a constant outer diameter along the axis of rotation, The packaging film is configured to restore the packaging film to a flat state by contacting the outer peripheral surface of the straight roll with the packaging film. Such as the inspection device of claim 1, where The aforementioned second film has a protruding shape and the internal space has a pocket portion forming the aforementioned storage space, The deforming means is to bend the packaging film in a state where the bag portion protrudes toward the opposite side of the electromagnetic wave irradiation means. Such as the inspection device of claim 1, where The aforementioned deforming means is provided with a deforming roller, which is rotatable and has an outer peripheral surface whose circumference gradually decreases from both ends to the center along the direction of the rotation axis, or the circumference along the rotation axis from both ends to the center The peripheral surface that gradually increases on the side, And it is comprised so that the said packaging film may bend by this deformation|transformation roller contacting the said packaging film. Such as the inspection device of claim 6, where The deformation means has a pressing roller that can rotate and sandwich the packaging film between the deformation roller and the deformation roller. Such as the inspection device of claim 1, where The aforementioned deforming means and the aforementioned deformed state maintaining means are respectively formed by devices of the same configuration. A packaging sheet manufacturing device characterized by having an inspection device as claimed in any one of claims 1 to 8. A packaging sheet manufacturing method, which is used to manufacture a strip-shaped packaging film and cut the packaging film to obtain a packaging sheet. The packaging film is installed with a strip-shaped first film made of opaque material and made of A band-shaped second film made of an opaque material and containing contents in a storage space formed between the two films, and is characterized by: Installation project, installing the conveyed belt-shaped first film and the conveyed belt-shaped second film; The filling process is to fill the aforementioned contents in the aforementioned containing space formed between the aforementioned first film and the aforementioned second film; The cutting process is to cut the packaging sheet from the strip-shaped packaging film, the packaging film is formed by installing the first film and the second film and containing the contents in the storage space; and Perform the inspection process of the inspection of the aforementioned packaging sheet, The aforementioned inspection project includes: In the irradiation process, an electromagnetic wave capable of penetrating the packaging film is irradiated from the first film side to the transported packaging film from the radiation source provided by the established electromagnetic wave radiation means; The imaging process uses imaging means to obtain electromagnetic wave penetration images based on electromagnetic waves that have penetrated the packaging film. The imaging means is arranged on the second film side with the packaging film and the electromagnetic wave irradiation means facing each other. It is formed by detecting the electromagnetic wave penetrating the aforementioned packaging film; and The quality judgment process is based on the electromagnetic wave penetration image obtained by the aforementioned shooting process to determine the quality of the aforementioned packaging film. The aforementioned irradiation process and the aforementioned photographing process are performed by bending the packaging film so as to protrude toward the opposite side of the radiation source and maintaining the curved shape of the packaging film. The detection part of the imaging means is formed in a curved shape along the curved shape of the packaging film.

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