KR20210084545A - Inspection device, blister packing machine and manufacturing method of blister pack - Google Patents

Abstract

The present invention relates to an inspection apparatus, a blister packaging machine and a method for manufacturing a blister pack,
Provided are a detection device capable of more precisely detecting a molding defect on the side of a pocket, a blister packaging machine, and a method for manufacturing a blister pack, wherein the pocket inspection device 21 includes a container film 3 molded of the pocket 2 A lighting device 50 capable of emitting a predetermined electromagnetic wave, provided on the opposite side to the lighting device 50 through the container film 3, and imaged by capturing the electromagnetic wave passing through at least the bottom of the pocket portion 2 A camera 51 capable of acquiring data is provided, and on the basis of the image data acquired by this, a shading pattern generated on the bottom of the pocket portion 2 by irradiation with the electromagnetic wave is extracted, and the shading pattern is preset in advance. By comparing the set predetermined criterion for judgment, at least the side part of the pocket part 2 is configured to be able to perform good or bad judgment regarding the molding state.

Description

Inspection device, blister packing machine and manufacturing method of blister pack

The present invention relates to an inspection apparatus for inspecting the molding state of a pocket portion of a blister pack, a blister packaging machine, and a method for manufacturing a blister pack.

Conventionally, as a packaging container for packaging medicines, foodstuffs, electronic parts, etc., blister packs are widely used. Among them, in the field of pharmaceuticals, a PTP (press-through package) sheet used for packaging tablets, capsules, and the like is well known.

The PTP sheet is composed of a container film in which a pocket portion for accommodating contents such as tablets is formed, and a cover film mounted on the container film to seal the opening side of the pocket portion, and presses the pocket portion from the outside, and the contents contained therein are pressed. The contents can be taken out by tearing the cover film used as the cover.

Such a PTP sheet includes a pocket part forming process of forming a pocket part with respect to a belt-shaped container film, a filling process of filling the pocket part with contents, and mounting of attaching a cover film to the container film to seal the opening side of the pocket part. It is manufactured through a separation process of separating the PTP sheet, which becomes the final product, from the strip-shaped PTP film formed by mounting both the strip-shaped films.

Here, as for the shaping|molding of a pocket part, it is common to stretch-process a part (molding schedule part) of the strip|belt-shaped container film partially heat-softened, such as vacuum forming, air pressure forming, plug forming, and plug-assisted air pressure forming, for example.

For this reason, there is a correlation between the thickness of each of the bottom portion and the side portion of the pocket portion, and when the bottom portion is thick, the side portion becomes thin, and when the bottom portion is thin, the side portion becomes thick.

When the thickness balance of the bottom portion and the side portions is broken, a portion of the pocket portion becomes excessively thin, and there is a possibility that various problems such as a decrease in gas barrier properties may occur. In particular, in the side part which becomes thinner than the bottom part, there is concern about excessive slimming.

On the other hand, the technique which detects the molding defect of the side part of a pocket part based on the image data obtained by imaging the bottom part of a pocket part using the said correlation is also proposed (for example, refer patent document 1).

Japanese Patent Publication No. 6368408

However, in the prior art according to Patent Document 1, based on image data obtained by imaging the bottom of the pocket, the thickness at each position on the bottom is calculated from the relationship between the transmittance of light and the thickness of the bottom, and the average value thereof Based on (average thickness of the bottom part), it has a structure which detects the molding defect of the side part of a pocket part.

In this way, the molding state of the side of the pocket can be roughly estimated from the thickness of the bottom, even if the average, maximum, and minimum of the thickness of the bottom becomes a desired value and the molding state of the bottom is judged to be appropriate, When there is variation in the thickness distribution of the bottom portion or the shape of the bottom portion is complicated, the side portion may not have a desired thickness or variations may occur in the thickness distribution of the side portion.

Therefore, in the said prior art, there existed a possibility that the shaping|molding defect (thickness defect) of the side part of a pocket part could not be detected precisely.

In addition, the said subject is not limited to PTP packaging, It is inherent also in the field of other blister packaging.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inspection device capable of more precisely detecting a molding defect on the side of a pocket, a blister packaging machine, and a method for manufacturing a blister pack.

Hereinafter, each means suitable for solving the above problem will be described in terms of division. In addition, if necessary, a specific action and effect is added to the corresponding means.

Means 1. An inspection device for inspecting the molding state of the pocket portion of the blister pack,

an irradiation means capable of irradiating a predetermined electromagnetic wave to the container film in which the pocket portion is molded;

an imaging means provided on the opposite side to the irradiation means through the container film and capable of acquiring image data by imaging the electromagnetic wave passing through at least the bottom of the pocket portion;

light and shade pattern extracting means for extracting a light and shade pattern (a light and shade distribution image) generated on the bottom of the pocket part by irradiation of the electromagnetic wave based on the image data acquired by the imaging means;

Inspection apparatus characterized by comprising: good or bad judgment means capable of executing good or bad judgment regarding the molding state of at least the side of the pocket part by comparing the shaded pattern extracted by the shading pattern extracting means with a predetermined criterion set in advance. .

In addition, the "blister pack" includes, for example, a PTP sheet for accommodating tablets, etc., a portion pack for accommodating foodstuffs, and a carrier tape for accommodating electronic components, etc., and the "electromagnetic wave" includes, for example, Visible light, ultraviolet light, X-rays, and the like are included.

In addition, the "shade pattern (shaded distribution image) generated on the bottom of the pocket part by irradiation of the electromagnetic wave" is the difference in thickness (thickness distribution) at each position (two-dimensional coordinate position) on the bottom of the pocket part, From the relation with the transmittance of electromagnetic waves passing therethrough, it means a two-dimensional distribution image of light and shade generated at the bottom of the pocket.

That is, the "joke" here means the magnitude of the intensity (luminance) of the electromagnetic wave that has passed through each position on the bottom of the pocket part. Therefore, the expression "shading pattern (shade distribution image) generated on the bottom of the pocket part by irradiation of the electromagnetic wave" is, for example, "intensity distribution image of the electromagnetic wave passing through the bottom part of the pocket part" or "angle of the bottom part of the pocket part" The two-dimensional distribution image of the electromagnetic wave intensity (luminance) that differs at each position due to the difference in thickness at the position", "The shade distribution image corresponding to the thickness distribution of the bottom of the pocket part (electromagnetic intensity distribution image, luminance distribution image)" may be

As described in the "Background Art" above, there is a correlation between the thickness of each of the bottom part and the side part of the pocket part formed by partially stretching the container film, and if the bottom part is thick, the side part is thin, and if the bottom part is thin, the side part is thick. lose

Using such a correlation, in the above means 1, while irradiating a predetermined electromagnetic wave, the shading pattern (that is, the thickness distribution state of the bottom part) is extracted from the image data obtained by imaging the bottom part of the pocket part. , by comparing this with a predetermined criterion for determining whether or not the molded state of at least the side of the pocket part is good or bad.

As an example, the shading pattern generated at the bottom of the pocket part to be inspected is compared with a predetermined criterion obtained in advance (for example, the shading pattern generated on the bottom of the pocket part of a good product) by a method such as pattern matching, A configuration in which a judgment is made based on the degree of agreement may be exemplified.

By such a structure, molding defect (thickness defect) of the side part of a pocket part, such as the presence or absence of the dispersion|variation in thickness distribution in the side part of a pocket part, can be detected more precisely.

Moreover, when test|inspecting the shaping|molding state of the side part of a pocket part, it is also conceivable to image and test|inspect a side part directly. In this case, it is necessary to consider the gas barrier property and the like, and to grasp the molding state of the entire periphery of the side part. However, under the configuration in which the side part is directly imaged, it takes a lot of time or a large device to grasp the molding state of the entire periphery of the side part, so there is a possibility that the productivity of the blister pack may be lowered.

According to this point and this means, based on capturing the bottom part of the pocket part and grasping the molding state, since it is a structure which can grasp|ascertain the molding state of the entire periphery of a side part in a short-term and simple manner, the speedup of an inspection, and furthermore, a blister It is possible to improve the productivity of the turpack.

means 2. The quality determination means includes:

After binarizing the light and shade pattern to a predetermined threshold value, among the binary patterns (binary distribution image) obtained by this, a light pattern (light distribution image) or less than the threshold value, which is a connected component of the bright part that is equal to or greater than the threshold value The inspection apparatus according to means 1, wherein the quality determination is performed by comparing the shape of the dark portion (distributed shape of the dark portion), which is a connecting component of the dark portions, with a predetermined criterion.

According to the means 2, since the binary pattern obtained by binarizing the shading pattern is compared with a predetermined criterion to determine whether or not it is good or bad, it is possible to simplify the quality judgment process. As a result, it is possible to further speed up the inspection and further improve the productivity of the blister pack.

means 3. The quality determination means comprises:

In means 2, characterized in that the above-mentioned quality judgment is performed by judging whether or not the position of the boundary part (outline part) of the bright part shape or the dark part shape satisfies a predetermined criterion (whether or not it is within a predetermined allowable range) described inspection device.

According to said means 3, compared with the structure which compares with a predetermined|prescribed criterion with respect to the whole area of a bright part pattern or a dark part shape, further simplification of a quality determination process can be aimed at. As a result, it is possible to further speed up the inspection and further improve the productivity of the blister pack.

means 4. The quality determination means includes:

It is determined whether the luminance of each pixel (each position on the shaded pattern) constituting the shade pattern satisfies a predetermined criterion (whether or not it is within a predetermined allowable range), and pixels that do not satisfy the criterion The inspection apparatus according to means 1, wherein the quality determination is performed by determining whether the defective area satisfies a predetermined criterion (whether or not it is within a predetermined allowable range) after grasping the ?

According to the above means 4, it is determined whether the luminance in each pixel constituting the shading pattern along the bottom of the pocket part satisfies a predetermined criterion, and then, the quality of the molding state of the side of the pocket part is judged. is composed of Thereby, the more detailed test|inspection regarding the shaping|molding state of a pocket part can be performed, and the shaping|molding defect of a pocket part can be detected more precisely.

Means 5. The container film is made of a resin film material having light-transmitting properties,

The irradiation means is configured to be capable of irradiating ultraviolet light (for example, ultraviolet light having a peak wavelength in a range of 200 nm or more and 280 nm or less) as the electromagnetic wave. inspection device.

In the case where the container film is made of a light-transmitting resin film material, in the case where visible light is irradiated from the irradiating means, there is a difference in the light transmittance between the thin portion and the thick portion of the bottom portion of the pocket portion. There is a possibility that it may become difficult to occur. That is, the whole bottom part becomes uniform, and there exists a possibility that a shading pattern may become difficult to produce. As a result, there is a fear that it may become difficult to properly conduct the inspection.

On the other hand, according to the said means 5, it is a structure which irradiates an ultraviolet light with respect to the container film comprised with the resin film material which has translucency.

Since the transmittance of ultraviolet light is low compared with visible light and it is difficult to permeate|transmit the container film which has a light-transmitting property, the test|inspection regarding the shaping|molding state of a pocket part can be performed more appropriately.

Here, the "resin film material having light transmittance" includes, for example, "a film having a property of transmitting light (transmitting light), the transmittance of electromagnetic waves (light) is very high, and the opposite side can be seen through the film. "Transparent resin film material" and "It has light transmittance, but the transmitted electromagnetic wave (light) is expanded and dispersed or the transmittance of the electromagnetic wave (light) is low, so that the human eye can see the object on the opposite side through the film. "Translucent resin film material" whose shape or the like cannot be clearly recognized or cannot be recognized at all.

In addition, "transparent" and "semitransparent" are expressions which show the material of the film which has a light-transmitting property, and has nothing to do with the presence or absence of a color. Accordingly, the “transparent” or “translucent” film includes, for example, a “colorless transparent” or “colorless translucent” film as well as a “colored transparent” or “colored translucent” film.

Means 6. Means characterized in that the electromagnetic wave includes electromagnetic waves having a wavelength at which the transmittance of the container film (for example, a resin film material such as polypropylene or polyvinyl chloride) is 15% or more and 60% or less The inspection apparatus in any one of 1-5.

Even if the transmittance|permeability of the electromagnetic wave which penetrates a container film is too high or too low, there exists a possibility that it may become difficult to produce a difference in the transmittance|permeability of the light in the thin part and thick part of the bottom part of a pocket part. As a result, there is a fear that it may become difficult to properly conduct the inspection.

On the other hand, like the means 6 mentioned above, the test|inspection can be performed more suitably by using the electromagnetic wave of the wavelength in which the transmittance|permeability of a container film becomes 15% or more and 60% or less. More preferably, it is preferable to conduct the inspection using electromagnetic waves of a wavelength such that the transmittance of the container film is 20% or more and 50% or less (eg, 30%).

Means 7. The criterion for the determination is:

The inspection device according to any one of means 1 to 6, wherein it is determined based on the shade pattern obtained by imaging the pocket portion of the defective product by the imaging means.

According to said means 7, even when the shape and thickness distribution of the bottom part of a pocket part are complicated, the determination criterion can be set comparatively easily.

Means 8. The inspection device according to any one of Means 1 to 7, wherein the pocket portion is thermoformed on the flat container film.

Here, "thermal forming" is a forming method in which a part of a flat container film (molding scheduled portion) is partially heated and softened and stretched, for example, vacuum forming, air pressure forming, plug forming, plug assisted air pressure forming, etc. Included.

Accordingly, under the configuration according to the present means 8, the operational effects of the means 1 and the like are further exhibited.

Means 9. A blister packaging machine comprising the inspection device according to any one of means 1 to 8.

As in the above means 9, by providing the inspection device in the blister packaging machine (eg, PTP packaging machine), defective products can be efficiently excluded in the manufacturing process of the blister pack (eg, PTP sheet). advantage arises. Moreover, a blister packaging machine is good also as a structure provided with the discharge|emission means which discharges the blister pack judged as defective by the said inspection apparatus.

As a more specific structure of a blister packaging machine, the following structures are mentioned as an example.

"In a blister packaging machine for manufacturing a blister pack in which a predetermined content is accommodated in a pocket formed in a container film and a cover film is mounted to close the pocket,

pocket portion forming means for forming the pocket portion with respect to the container film conveyed in a strip shape;

a filling means for filling the pocket with the contents;

Mounting means for mounting the cover film in the form of a strip to block the pocket portion with respect to the container film filled with the contents in the pocket portion;

Separation means (including punching means for punching sheet units) for separating the blister pack from the band-shaped body (belly-shaped blister film) on which the cover film is mounted on the container film;

A blister packaging machine comprising the inspection device according to any one of means 1 to 8. '.

In addition, in the case of inspecting a container film whose posture is not determined, processing for specifying the position of the pocket portion must be executed. Of course, in the case of a non-circular pocket portion, the central position of the pocket portion to be inspected is determined from the image data. After calculating and aligning the center of the previously stored reference image for pattern matching with the central position of the pocket portion, the reference image is rotated by a predetermined angle, and processing such as determining whether they match each time is performed It has to be done, and there is a possibility that the inspection according to the pocket portion has a very large number of processes and is laborious.

On the other hand, as in the above means 9, by providing the inspection device on the blister packaging machine, the stop position and direction (posture) of the container film with respect to the imaging means becomes constant, so that it occurs at the bottom of the pocket part to be inspected. Even in the case of comparing the shading pattern with a predetermined criterion obtained in advance (for example, the shading pattern formed on the bottom of the pocket part of a non-defective product), the alignment of the inspection target and the judgment criterion, or the determination of the judgment criterion according to the inspection target Since there is no need to adjust the direction (posture) or the like, it is possible to speed up the inspection. As a result, the number of treatments applied to one pocket portion is remarkably reduced, and the inspection processing speed can be remarkably increased.

In addition, under the configuration according to the means 9,

“Disposing the filling means on the downstream side of the inspection device,

It is good also as a structure provided with the filling control means which controls the operation|movement of the said filling means based on the test result by the said test|inspection apparatus, and can switch whether the said content to the said pocket part is filled.

With such a configuration, for example, it is also possible to prevent the contents from being filled with respect to the defective pocket portion. Accordingly, when the blister pack is discarded due to poor molding of the pocket portion, it is possible to prevent the occurrence of problems such as discarding the contents together with the blister pack. In addition, in order to reuse the contents, there is no need to perform a cumbersome operation such as taking out the contents once filled in the pocket portion. As a result, reduction in productivity can be suppressed.

In addition, under the configuration according to the means 9,

"The pocket part forming means includes a first mold, a second mold facing through the first mold and the container film, and stretching means (stretching) for shaping the pocket part with respect to the container film sandwiched by the both molds. It is good also as a structure provided with" shaping|molding means).

In such a configuration, the correlation between the thickness of the bottom part and the side part of the pocket part described in "Background Art" above, that is, if the thickness of the bottom part is thick, the thickness of the side part is thin, and if the thickness of the bottom part is thin, the thickness of the side part is Since a correlation such as thickening occurs, the effect of the above means 1, such as detecting a molding defect on the side of the pocket portion, based on image data obtained by imaging the bottom portion of the pocket portion, appears.

Means 10. A method of manufacturing a blister pack in which a predetermined content is accommodated in a pocket formed in a container film, and a cover film is mounted to close the pocket,

a pocket part forming step of forming the pocket part with respect to the container film conveyed in a strip shape;

A filling process of filling the pocket with the contents;

A mounting process of attaching the cover film in the form of a strip to the container film in which the contents are filled in the pocket portion to close the pocket portion;

A separation process of separating the blister pack from a band-shaped body (a band-shaped blister film) in which the cover film is mounted on the container film (including a punching process of punching each sheet);

and an inspection process of inspecting the molding state of the pocket portion of the blister pack,

In the inspection process,

an irradiation step of irradiating a predetermined electromagnetic wave to the container film in which the pocket portion is molded;

an imaging step of acquiring image data by imaging the electromagnetic wave passing through at least the bottom of the pocket portion;

a shading pattern extraction step of extracting a shading pattern (shading distribution image) generated in the bottom portion of the pocket portion by irradiation of the electromagnetic wave based on the image data acquired by the imaging;

and a quality determination step of determining whether or not the molded state of at least the side of the pocket portion is formed by comparing the extracted shading pattern with a predetermined determination criterion set in advance.

According to the means 10, the same operational effects as the means 1 and 9 are exhibited.

1 is a perspective view of a PTP sheet;
2 is a partially enlarged cross-sectional view of a PTP sheet.
3 is a perspective view of a PTP film.
4 is a schematic diagram of a lighting device and a camera.
5 is a schematic configuration diagram of a PTP packaging machine.
6 is a block diagram showing the electrical configuration of the pocket inspection device.
Fig. 7 is a partially cutaway front view showing the schematic configuration of the pocket forming apparatus and the heating apparatus.
8 is a flowchart showing the flow of the pocket forming process.
Fig. 9 is a flowchart showing an inspection routine;
It is a figure which shows the shade pattern etc. which arise in a pocket part.
11 is a graph illustrating luminance values according to each pixel along the line A-A' of FIG. 10 .
It is a figure which shows the binary pattern which binarized the shaded pattern of FIG.
It is a schematic diagram which shows the relationship between each area|region of a bottom part, and a determination criterion.
14 is a flowchart showing an inspection routine according to the second embodiment.
15 is a graph illustrating a luminance value according to each pixel along the line A-A' of FIG. 10 and a luminance upper limit value and a luminance lower limit value according to each pixel along the line A-A' of FIG. 10 .
It is a schematic diagram which shows the image for judgment.
17 is a view for explaining a blister pack according to another embodiment, wherein (a) is a perspective view thereof, (b) is a plan view thereof, and (c) is a relationship between each area of the bottom portion and a criterion for determination It is a schematic diagram

[First Embodiment]

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment is described, referring drawings. First, the PTP sheet 1 as a blister pack will be described.

1 and 2, the PTP sheet 1 is mounted on the container film 3 so as to close the container film 3 having a plurality of pocket portions 2, and the pocket portions 2 A cover film 4 is provided.

The container film 3 is formed of, for example, a colorless and transparent thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride), and has light-transmitting properties. On the other hand, the cover film 4 is comprised by the opaque material (for example, aluminum foil etc.) provided on the surface of the sealant which consists of polypropylene resin etc., for example.

The PTP sheet 1 is provided in a substantially rectangular shape in plan view. In the PTP sheet 1, two rows of pockets composed of five pocket portions 2 arranged along the longitudinal direction are formed in two rows in the short longitudinal direction. That is, a total of 10 pocket portions 2 are formed. In each pocket part 2, the tablets 5 as contents are accommodated one by one.

The pocket portion 2 has a substantially circular bottom portion 2a in plan view disposed to face each other with the cover film 4, and is connected to the periphery of the bottom portion 2a, and further includes the bottom portion 2a and the film. It is composed of a substantially cylindrical side portion 2b connecting the flat portion (pocket unshaped portion) 3b.

Although the bottom part 2a of this embodiment is shape|molded in the cross section which curved gently, it is not limited to this, It is good also as a structure shape|molded in the flat shape. Moreover, it is good also as a structure in which the cross section with a larger curvature was shape|molded in the arc shape in which the leg part 2c where the bottom part 2a and the side part 2b intersect is not clear.

As for the PTP sheet 1 (refer FIG. 1), the strip|belt-shaped PTP film 6 (refer FIG. 3) formed from the strip|belt-shaped container film 3 and the strip|belt-shaped cover film 4 punched out in the shape of a rectangular sheet. manufactured by becoming

Then, the schematic structure of the PTP packaging machine 11 as a blister packaging machine which manufactures the said PTP sheet 1 is demonstrated with reference to FIG.

On the upstream side of the PTP packaging machine 11, the original fabric of the strip|belt-shaped container film 3 is wound in roll shape. The lead end side of the container film 3 wound in roll shape is guided by the guide roll 13 . The container film 3 is caught by the intermittent feed roll 14 on the downstream side of the guide roll 13 and is attached. The intermittent feed roll 14 is connected to a motor which rotates intermittently, and conveys the container film 3 intermittently.

Between the guide roll 13 and the intermittent transfer roll 14, along the conveyance path|route of the container film 3, the heating apparatus 15 and the pocket part shaping|molding apparatus 16 are provided in order. By the heating device 15 and the pocket part shaping|molding apparatus 16, the pocket part shaping|molding means of this embodiment is comprised. The configuration of the heating device 15 and the pocket forming device 16 will be described in detail later.

Here, in a state in which the container film 3 is heated by the heating device 15 and the container film 3 is relatively soft, a plurality of containers are placed at a predetermined position of the container film 3 by the pocket forming device 16 . of the pocket portions 2 are molded at once (pocket portion forming step). In addition, the shaping|molding of the pocket part 2 is performed during the interval between conveyance operations of the container film 3 by the intermittent conveyance roll 14. As shown in FIG.

Further, between the guide roll 13 and the intermittent feed roll 14 , a pocket part inspection device 21 is provided downstream of the pocket part forming apparatus 16 .

The pocket part inspection apparatus 21 is for performing the test|inspection regarding the shaping|molding state of the pocket part 2 shape|molded by the pocket part shaping|molding apparatus 16. As shown in FIG. The configuration of the pocket portion inspection device 21 will be described in detail later.

The container film 3 sent from the intermittent feed roll 14 is hung and mounted in this order by a tension roll 18 , a guide roll 19 , and a film receiving roll 20 .

Since the film receiving roll 20 is connected to a constant rotating motor, the container film 3 is continuously conveyed at a constant speed. The tension roll 18 is in a state in which the container film 3 is tensioned by the elastic force, and the container film 3 according to the difference in the conveying operation of the intermittent feed roll 14 and the film receiving roll 20 ) to keep the container film (3) in a tension state at all times by preventing the loosening.

Between the guide roll 19 and the film receiving roll 20, along the conveyance path of the container film 3, the tablet filling apparatus 22 is provided.

The tablet filling device 22 has a function as a filling means for automatically filling the tablet 5 into the pocket portion 2 . The tablet filling device 22 opens the shutter at predetermined intervals in synchronization with the conveying operation of the container film 3 by the film receiving roll 20 to drop the tablets 5, and according to this shutter opening operation, the tablet 5 is dropped. Tablets 5 are filled in each pocket portion 2 . The operation of the tablet filling device 22 is controlled by a filling control device 82 described later.

On the other hand, the original fabric of the cover film 4 formed in the strip|belt shape is wound up in roll shape in the most upstream side. The lead-out end of the cover film 4 wound in roll shape is guided toward the heating roll 25 side by the guide roll 24 . The heating roll 25 is press-contactable to the film receiving roll 20, and the container film 3 and the cover film 4 are sent between the both rolls 20 and 25.

Then, when the container film 3 and the cover film 4 pass between the rolls 20 and 25 in a heat-pressing state, the cover film 4 is attached to the container film 3, and the pocket portion 2 is is covered with the cover film 4 (mounting process). Thereby, the PTP film 6 as a strip|belt-shaped body in which the tablet 5 was accommodated in each pocket part 2 is manufactured. The mounting means in this embodiment is comprised by the film receiving roll 20 and the heating roll 25. As shown in FIG.

The PTP film 6 sent from the film receiving roll 20 is hung and mounted in this order by a tension roll 27 and an intermittent transfer roll 28 .

Since the intermittent transfer roll 28 is connected to a motor rotating intermittently, the PTP film 6 is intermittently transferred. The tension roll 27 is in a state in which the PTP film 6 is tensioned by an elastic force, and the PTP film 6 due to a difference in the conveying operation of the film receiving roll 20 and the intermittent conveying roll 28 By preventing the slack of the PTP film (6) is always maintained in a tension state.

The PTP film 6 sent from the intermittent feed roll 28 is hooked on the tension roll 31 and the intermittent feed roll 32 in this order.

Since the intermittent transfer roll 32 is connected to a motor which rotates intermittently, the PTP film 6 is conveyed intermittently. The tension roll 31 is in a state in which the PTP film 6 is tensioned by the elastic force, and the PTP film 6 between the intermittent transfer rolls 28 and 32 is prevented from loosening.

Between the intermittent transfer roll 28 and the tension roll 31, the slit forming apparatus 33 and the engraving apparatus 34 are arrange|positioned along the conveyance path|route of the PTP film 6 in order. The slit forming apparatus 33 has a function of providing a slit for separation in a predetermined position of the PTP film 6 . The marking device 34 has a function of marking a predetermined position (eg, a tag portion) of the PTP film 6 .

The PTP film 6 sent from the intermittent feed roll 32 is hooked on the downstream side of the tension roll 35 and the continuous feed roll 36 in this order.

A sheet punching device 37 is provided between the intermittent feed roll 32 and the tension roll 35 along the transport path of the PTP film 6 . The sheet punching device 37 has a function as a sheet punching means (separating means) for punching out the outer edge of the PTP film 6 in units of the PTP sheet 1 .

The PTP sheet 1 punched out by the sheet punching device 37 is conveyed by the take-out conveyor 38, and is temporarily stored in the hopper 39 for finished products (separation process). However, when a defective product signal is input from the filling control device 82 to be described later for the defective sheet discharging mechanism 40 capable of selectively discharging the PTP sheet 1, the defective PTP sheet 1 is transferred to the defective sheet discharging mechanism 40 ) and transferred to a hopper for defective products not shown.

A cutting device 41 is provided downstream of the continuous feed roll 36 . The scrap portion 42 remaining in the band shape after punching by the sheet punching device 37 is guided to the tension roll 35 and the continuous feed roll 36 , and then is guided to the cutting device 41 . Here, the continuous feed roll 36 is press-contacted with the driven roll, and carries out the conveying operation while sandwiching the scrap part 42 .

The cutting device 41 has a function of cutting the scrap portion 42 to a predetermined size. After the cut scrap portion 42 is stored in the scrap hopper 43, it is separately disposed of.

Further, in each of the rolls 14 , 19 , 20 , 28 , 31 , 32 , etc., the roll surface and the pocket portion 2 are in a positional relationship to face each other, but the surface of each roll 14 and the like has a pocket portion Since the recessed part in which (2) is accommodated is provided, basically, the pocket part 2 will not be crushed. Moreover, an intermittent conveying operation|movement and a continuous conveying operation|movement are performed reliably by carrying out a conveyance operation while the pocket part 2 is accommodated in the recessed part of each roll 14 grade|etc.,.

Then, with reference to FIG. 7, the structure of the heating apparatus 15 and the pocket part shaping|molding apparatus 16 is demonstrated.

The heating device 15 has an upper heater plate 15a and a lower heater plate 15b. Both heater plates 15a and 15b are configured to be able to be heated by a heater (not shown). Both heater plates 15a and 15b are provided so that the conveyance path|route of the container film 3 is pinched|interposed, and it is movable in the direction which approaches or separates the container film 3, respectively.

Moreover, each heater plate 15a, 15b is equipped with the some protrusion part 15c, 15d in the position corresponding to the shaping|molding schedule part 3a of the pocket part 2 in the container film 3 .

The container film 3, which is conveyed intermittently, is partially (spotted) heated by being pinched by the protrusions 15c and 15d in accordance with the approach movement of both heater plates 15a, 15b during a pause, and this heating The softened part becomes a softened state. In addition, in this embodiment, the contact part with the container film 3 in the protrusions 15c and 15d is a thing smaller than the planar shape of the pocket part 2 by one turn.

The pocket forming apparatus 16 includes a lower mold 61 as a second mold and an upper mold 71 as a first mold. The lower frame 61 is fixed to the support 63 in a fixed state through a cylindrical lower frame chamber 62 . Moreover, the lower frame 61 is equipped with the some insertion hole 64 at the position corresponding to the position of the pocket part 2 .

A plurality of through-holes are formed in the support stand 63, and a rod-shaped slider 65 is inserted through the through-holes through a bearing mechanism. The slider 65 is movable up and down by a cam mechanism (not shown).

A pocket forming mold 66 is fixed to the upper portion of the slider 65, and the pocket forming mold 66 can be inserted through the insertion hole 64 and has a bar shape extending in the vertical direction. A plurality of flags 66a are provided. The tip shape of the flag 66a is a shape corresponding to the inner surface of the pocket part 2 . The pocket forming mold 66 moves up and down in accordance with the vertical movement of the slider 65 by the driving of the cam mechanism. In addition, the lower mold 61, the pocket forming mold 66, and the like can be appropriately replaced according to the type of the PTP sheet 1 to be produced.

Further, a circulation path 67 for circulating cooling water (or hot water) is provided inside each of the slider 65 and the pocket forming mold 66 . Thereby, the dispersion|variation in the surface temperature in each flag 66a is suppressed.

The flag 66a is arranged in this order at the initial position, the intermediate stop position, and the protruding position when the pocket portion 2 is molded, and finally returns to the initial position. In addition, the operation|movement of such flag 66a is controlled by the shaping|molding control apparatus 81 mentioned later.

The initial position is a position at which the flag 66a is disposed at the start of the forming process of the pocket portion 2 , and the flag 66a disposed at this position is below the insertion hole 64 , and the insertion hole 64 . placed outside.

The intermediate stop position is a position at which the flag 66a is disposed in the intermediate stage of the forming process of the pocket portion 2, and the flag 66a disposed at this position is disposed in the insertion hole 64, and the container film ( 3) is in a state in which a predetermined gap is formed between the

The protruding position is a position at which the flag 66a is disposed in the final stage of the forming process of the pocket part 2, and the tip surface of the flag 66a disposed at this position is a minute corresponding to the depth of the pocket part 2 It is in a state protruding from the lower frame 61 as much as possible.

On the other hand, the upper frame 71 is fixed to the upper plate 73 movable up and down through the plate 72 , and is movable along the direction of approaching or separating from the lower frame 61 . The upper frame 71 has a gas supply hole 74 at a position facing the insertion hole 64 of the lower frame 61 .

In addition, a gas supply path 75 communicating with a gas supply hole 74 is formed inside the plate 72 and the upper plate 73 , and the gas supply path 75 is connected to, for example, a compressor or the like. A predetermined high-pressure gas (inert gas, in this embodiment air) is supplied from the gas supply device 76 constituted by the .

In addition, in this embodiment, it has a structure in which a total of 20 pocket parts 2 corresponding to the PTP sheet|seat 1 for 2 sheets are simultaneously shape|molded by one operation|movement of the pocket part shaping|molding apparatus 16. As shown in FIG. That is, it has a structure in which five pocket parts 2 are simultaneously shape|molded with respect to the film width direction (Y direction) of the container film 3, and also with respect to a film conveyance direction (X direction).

Here, the shaping|molding control apparatus 81 is demonstrated. The molding control device 81 is for controlling the molding of the pocket portion 2 by the heating device 15 and the pocket portion molding device 16, and is configured by a computer system having a CPU, RAM, or the like. has been

The molding control device 81 includes information about the initial position of the flag 66a of the pocket part molding device 16, information about the intermediate stop position of the flag 66a, and information about the projecting position of the flag 66a. etc. are set and stored, and operation control of the flag 66a is performed based on these information. In addition, the information regarding the initial position, the intermediate stop position, and the protrusion position of the flag 66a changes suitably according to the depth of the pocket part 2 in the PTP sheet 1 used as manufacture object, etc.

Then, the structure of the pocket part inspection apparatus 21 is demonstrated in detail. 4-6, the pocket part inspection apparatus 21 is equipped with the illumination device 50 as an irradiation means, the camera 51 as an imaging means, and the inspection control part 52 which controls these.

The lighting device 50 irradiates a predetermined electromagnetic wave to a predetermined range of the container film 3 from the protruding side (lower side in FIG. 4 ) of the pocket portion 2 . The lighting device 50 has an electromagnetic wave irradiation device 50a and a diffusion plate 50b covering it, and is configured to enable surface light emission. The lighting device 50 of the present embodiment irradiates the container film 3 with electromagnetic waves including ultraviolet light.

The camera 51 is sensitive to the wavelength region of the electromagnetic wave irradiated from the lighting device 50 . The camera 51 is provided on the opening side (upper side in FIG. 4 ) of the pocket portion 2 of the container film 3 , and the optical axis OL of the lens is orthogonal to the film flat portion 3b of the container film 3 . It is arranged so as to follow the vertical direction (Z direction).

In addition, a band pass filter 51a is provided corresponding to the lens of the camera 51 . The band pass filter 51a is installed so that only ultraviolet light enters the lens.

By providing the band pass filter 51a, among the electromagnetic waves irradiated from the illuminating device 50, only the ultraviolet light transmitted through the container film 3 is two-dimensionally imaged by the camera 51. As shown in FIG. In addition, the transmitted image data acquired by the camera 51 in this way becomes luminance image data with different luminance in each pixel (each coordinate position) based on the difference in the transmittance|permeability of the ultraviolet light in the container film 3 .

In particular, in the present embodiment, as the band-pass filter 51a, for example, what passes only the ultraviolet light having a wavelength of 253±20 nm at which the transmittance of the container film 3 is about 30±10% is used. This is because even if the transmittance of the electromagnetic wave passing through the container film 3 is too high or too low, there is a fear that a difference in light transmittance between the thin portion and the thick portion of the bottom portion 2a of the pocket portion 2 may hardly occur.

In addition, the imaging range of the camera 51 in this embodiment is the total corresponding to the PTP sheet|seat 1 for 2 sheets shape|molded by the container film 3 by one operation|movement of the pocket part shaping|molding apparatus 16 at least. A range including 20 pockets 2, that is, 5 for the film width direction (Y direction) of the container film 3, and 4 pockets 2 for the film conveying direction (X direction) It is set to image the included range at once.

The inspection control unit 52 is constituted by a so-called computer program, and is electrically connected to the image memory 53 , the calculation result storage unit 54 , the judgment memory 55 , the camera timing control unit 57 , and these. A connected microcomputer 58 is provided.

The image memory 53 stores various types of image data such as masked image data subjected to a masking process at the time of inspection, and binarized image data subjected to binarization, including transmission image data acquired by the camera 51 .

The calculation result storage device 54 stores test result data, statistical data obtained by processing the test result data in a probability statistical manner, and the like.

The memory 55 for determination is for memorize|stores various information used for a test|inspection. As these various types of information, for example, the shape and dimensions of the PTP sheet 1, the pocket portion 2, and the tablet 5, and for defining the inspection range (the range corresponding to the PTP sheet 1) The shape, dimension, and relative positional relationship of the camera 51 of the inspection rim, the shape, dimension, and relative positional relationship of the pocket rim W for defining the area of the pocket portion 2 and the camera 51 (or inspection rim) , the luminance threshold in the binarization process, and the determination criteria for performing the quality determination regarding the shaping|molding state of the pocket part 2, etc. are set and memorize|stored.

The camera timing control device 57 is for controlling the execution timing of the imaging process by the camera 51 . Such timing is controlled based on a signal from an encoder (not shown) installed in the PTP packaging machine 11 .

Thereby, at every interval where conveyance of the container film 3 in which the pocket part 2 was shape|molded temporarily stops, an electromagnetic wave is irradiated from the lighting device 50 with respect to the said container film 3, At the same time, the said container film 3 ), an image of the electromagnetic wave (ultraviolet light) transmitted by the camera 51 is executed. Then, the transmitted image data acquired by the camera 51 is converted into a digital signal (image signal) inside the camera 51, and then stored in the inspection control unit 52 (image memory 53) in the form of a digital signal. is taken in

The microcomputer 58 includes a CPU 58a as an arithmetic unit, a ROM 58b for storing various programs, a RAM 58c for temporarily storing various data such as arithmetic data and input/output data, and the like, and an inspection control unit. (52) is in charge of various controls.

The microcomputer 58 executes various processing programs for executing the inspection while using the contents stored in the judgment memory 55 and the like. In addition, the microcomputer 58 is comprised so that a signal can be transmitted and received with the filling control apparatus 82 mentioned later, and is comprised so that an inspection result etc. can be output to the filling control apparatus 82, for example.

Next, the pocket part shaping|molding process performed by the control of the shaping|molding control apparatus 81 is demonstrated, referring FIG.

In such a pocket part shaping|molding process, the intermediate|middle stop position arrangement|positioning process of step S1 is implemented first. In an intermediate stop position arrangement|positioning process, the flag 66a arrange|positioned at an initial position moves upward by moving the pocket part shaping|molding die 66 upward by the movement of the slider 65. As shown in FIG.

Then, when the flag 66a reaches the set intermediate stop position, the movement of the slider 65 is stopped, and the flag 66a is placed at the intermediate stop position. At this time, the tip surface of the flag 66a is in a state separated from the container film 3 by a predetermined distance. This predetermined distance will be smaller than the depth of the pocket part 2 normally.

Subsequently, in the clamping process of step S2, by moving the upper frame 71 downward, the container film 3 is sandwiched between the lower frame 61 and the upper frame 71 in a fixed state. do. At this time, in the container film 3, the annular part located around the shaping|molding schedule part 3a (refer FIG. 7) used as the pocket part 2 will be in the state pinched|interposed by both the frames 61 and 71. . In addition, an intermediate stop position arrangement|positioning process and a clamping process may be implemented simultaneously, and a clamping process may be implemented before an intermediate stop position arrangement|positioning process.

Subsequently, in the expansion process of step S3, gas is supplied from the gas supply device 76 to the gas supply hole 74 through the gas supply path 75, whereby the pocket portion ( With respect to the shaping|molding schedule part 3a of 2), compressed air is injected from the front side (FIG. 7 upper side). By supplying the gas, the shaping|molding schedule part 3a expands to the opposite side (FIG. 7 lower side) to the protrusion side (FIG. 7 upper side) of the pocket part 2, and stretches and becomes thin.

And the shaping|molding schedule part 3a expands until it becomes the state supported by the front-end|tip surface of the flag 66a. When expanding the shaping|molding schedule part 3a by supply of gas, the thickness of the shaping|molding plan part 3a after expansion becomes substantially the same as a whole.

Moreover, according to the intermediate|middle stop position of the flag 66a, the extending|stretching amount of the container film 3 changes, and the thickness of the shaping|molding schedule part 3a also changes. When the intermediate stop position of the flag 66a is relatively high, since the stretching amount of the container film 3 is relatively small, the molding scheduled portion 3a is in a thick state as a whole.

On the other hand, when the intermediate stop position of the flag 66a is comparatively low, since the extending|stretching amount of the container film 3 becomes a comparatively large thing, the shaping|molding schedule part 3a will be in a thin state as a whole.

Then, in the final shaping|molding process of step S4, the flag 66a moves upward and is arrange|positioned to a protruding position. As a result, the expansion direction in the shaping|molding schedule part 3a is reversed, and the pocket part 2 which has a predetermined depth is shape|molded. Accordingly, in the present embodiment, a stretching means for forming the pocket portion 2 by stretching a part of the container film 3 (the molding scheduled portion 3a) by means of the flag 66a, the gas supply device 76, or the like. stretch molding means) is constituted.

In addition, when the container film 3 is deformed by pressing, the portion corresponding to the bottom portion 2a of the molding scheduled portion 3a is cooled in contact with the flag 66a, so that the portion corresponding to the bottom portion 2a is cooled. The region is mostly not elongated. Therefore, if the forming scheduled portion 3a is made thick as a whole by setting the intermediate stop position relatively high, the portion corresponding to the bottom portion 2a is maintained in a thick state at the time of pressing with the flag 66a, as a result. , the side portion 2b of the pocket portion 2 to be molded becomes relatively thin.

On the other hand, if the forming scheduled portion 3a is made thin as a whole by setting the intermediate stop position relatively low, the portion corresponding to the bottom portion 2a is kept in a thin state when pressed by the flag 66a. , the side portion 2b of the pocket portion 2 to be molded becomes relatively thick.

In this way, by adjusting the intermediate stop position of the flag 66a to adjust the thickness of the molding scheduled portion 3a, each of the bottom portion 2a and the side portion 2b in the pocket portion 2 ultimately formed. It becomes possible to adjust the balance of thickness.

After the final shaping|molding process, the pocket part shaping|molding process is complete|finished by arranging the flag 66a at an initial position, and canceling|clamping the container film 3 by both molds 61 and 71.

Then, the filling control apparatus 82 is demonstrated. The filling control device 82 is for controlling the filling of the tablets 5 by the tablet filling device 22, and is constituted by a computer system having a CPU, RAM, or the like. The filling control device 82 constitutes the filling control means in the present embodiment.

In particular, the filling control device 82 according to the present embodiment can switch and control whether or not the tablet 5 is filled into the predetermined pocket portion 2 based on the inspection result by the pocket portion inspection device 21 . is well composed.

Specifically, the filling control device 82 receives the inspection result regarding the predetermined PTP sheet 1 (molding state of the ten pocket parts 2) from the pocket part inspection device 21, and such inspection result In the case of a non-defective determination result, the tablet filling device 22 is controlled to fill the tablets 5 into all ten pockets 2 included in the PTP sheet 1 .

On the other hand, when the inspection result regarding the predetermined PTP sheet 1 is a defect determination result, the tablets 5 are not filled in all ten pockets 2 included in the PTP sheet 1 . The tablet filling device 22 is controlled. At the same time, a defective product signal is output to the defective sheet discharging mechanism 40 . As a result, the defective sheet discharging mechanism 40 discharges the PTP sheet 1 (defective sheet) according to the defective product signal.

Then, the flow of the pocket part inspection implemented by the pocket part inspection apparatus 21 is demonstrated with reference to the flowchart of FIG.

In addition, the inspection routine accompanying the pocket part inspection shown in FIG. 9 is a process respectively performed with respect to each inspection range corresponding to the range punched out in the rectangular sheet shape as one PTP sheet|seat 1 used as a product. That is, the pocket part test|inspection shown in FIG. 9 will be implemented with respect to two test|inspection ranges, respectively for every interval where conveyance of the container film 3 stops once. Hereinafter, it will be described in detail.

When the predetermined range of the container film 3 in which the pocket part 2 was shape|molded by the pocket part shaping|molding apparatus 16 once stops in the pocket part inspection apparatus 21, the inspection control part 52 firstly controls the container film 3 ), the irradiation process (irradiation process) of irradiating electromagnetic waves (ultraviolet light) from the illumination device 50 is performed, and the imaging process (imaging process) by the camera 51 is performed.

And when the transmitted image data of the container film 3 is taken into the image memory 53, the inspection control part 52 first executes an inspection image acquisition process (step S11).

Specifically, based on the transmission image data of the container film 3 taken in the image memory 53, the inspection range (10 pockets (10 pockets) The image data according to the range including 2)) is acquired as an inspection image.

In addition, in this embodiment, the position at which the range corresponding to each PTP sheet 1 on the container film 3 stops is constant every time with respect to the imaging range of the camera 51, and the setting position of the said inspection frame is, It is predetermined by the relative positional relationship with the camera 51. Therefore, in the present embodiment, although the position of the setting position of the inspection frame is not adjusted each time according to the image data, it is not limited to this, and it is based on the information obtained from the image data in consideration of the occurrence of a position error, etc. It is good also as a structure which adjusts the setting position of the said test|inspection frame appropriately with this.

Moreover, it is good also as a structure which performs various processing processes with respect to an inspection image. For example, since there is a technical limit to uniformly irradiating electromagnetic waves over the entire imaging range from the lighting device 50, shading correction is performed to correct variations in electromagnetic wave intensity (luminance) caused by differences in positions. You can do it by composition.

When an inspection image is acquired, the inspection control part 52 then performs a mask process in step S12.

Specifically, each pocket edge W (refer to Fig. 10) is set according to the positions of the ten pocket portions 2 on the inspection image acquired in step S11, and is specified by the pocket edge W A process in which the mask M is applied is performed on a region other than the pocket region, that is, a region corresponding to the film flat portion 3b.

In addition, in this embodiment, the setting position of the pocket edge W is predetermined by the relative positional relationship with the said test|inspection edge. Therefore, in the present embodiment, the setting position of the pocket edge W is not adjusted each time according to the inspection image, but it is not limited to this, and the information obtained from the inspection image is obtained in consideration of the occurrence of a position error and the like. It is good also as a structure which adjusts the setting position of the pocket edge W appropriately based on it.

Then, the inspection control unit 52 sets "0" as the value of the pocket defective product flag of all the pocket parts 2 in step S13.

In addition, the "pocket non-defective flag" is for indicating the result of the determination of the quality of the corresponding pocket portion 2 and is set in the calculation result storage device 54 . Then, when the predetermined pocket portion 2 is judged as defective, "1" is set as the value of the corresponding pocket defective flag.

Subsequently, in step S14 , the inspection control unit 52 sets the initial value "1" as the value C of the pocket number counter set in the calculation result storage device 54 .

In addition, the "pocket number" is a serial number set corresponding to each of the ten pocket portions 2 within one inspection range, and the value (C) of the pocket number counter (hereinafter simply referred to as "pocket number (C)") ), the position of the pocket part 2 can be specified.

Then, in step S15, the inspection control unit 52 sets the pocket number C to the number of pockets N per inspection range (per 1 PTP sheet 1) (“10” in this embodiment). Determine whether or not

In the case of affirmative determination, the process shifts to step S16, and the inspection control unit 52 extracts a light and shade pattern according to the pocket portion 2 of the current pocket number C (light tone extraction process). run By the function of executing such a process, the shade pattern extracting means of this embodiment is mainly comprised.

Specifically, the pocket edge corresponding to the pocket portion 2 corresponding to the current pocket number C (for example, C=1) in the inspection image (masking image data) masked in step S12. The shading image in (W) is extracted as shading pattern K1 (refer FIG. 10) generated in the said pocket part 2.

That is, the shading pattern K1 is two-dimensional image information having luminance information (for example, any one of 256 gradations from 0 to 255) for each pixel, and the bottom part 2a of the pocket part 2 is In relation to the difference (thickness distribution) in thickness at each position (coordinate) of the back and the transmittance of electromagnetic waves passing therethrough, the two-dimensional distribution of light and shade generated in the bottom 2a of the pocket part 2, etc. It corresponds to an image (intensity distribution image of a transparent electromagnetic wave).

In addition, in this embodiment, since the pocket edge W is set according to the opening periphery part of the pocket part 2 (the junction part of the side part 2b and the film flat part 3b), this step (S16) In the shaded pattern K1 obtained in , not only the bottom part 2a of the pocket part 2, but also the side part 2b of the pocket part 2, and the pocket part where the bottom part 2a and the side part 2b intersect The shade pattern according to each part 2c of (2) is also included.

Moreover, about the range corresponding to the bottom part 2a among the shading patterns K1, the shading pattern which has the shading distribution (luminance distribution) substantially corresponding to the thickness distribution of the bottom part 2a is obtained. On the other hand, with respect to the range corresponding to the side part 2b and the corner part 2c, the luminance information does not correspond to the electromagnetic wave transmitted along the thickness direction (X direction or Y direction) of the side part 2b etc., Since it corresponds to the electromagnetic wave transmitted along the extending|stretching direction (Z direction) at the time of shaping|molding, a relationship with the thickness of the side part 2b etc. becomes weak.

Then, in step S17, the test|inspection control part 52 binarizes based on the predetermined|prescribed brightness threshold value L (refer FIG. 11) about the shade pattern K1 extracted in step S16. Conduct. FIG. 11 is a graph showing luminance values for each pixel along the line A-A' of the shaded pattern K1 shown in FIG. 10 .

Specifically, among the pixels constituting the shading pattern K1, a pixel having a luminance equal to or higher than the luminance threshold L is referred to as “1 (bright)”, and a pixel having a luminance less than the luminance threshold L is referred to as “ 0 (dark part)".

Thereby, in this embodiment, among the bottom part 2a of the pocket part 2, etc., a thin site|part with a thin thickness and high transmittance|permeability becomes "1 (bright area)" and appears, and a thick site with a thick thickness and low transmittance|permeability is A tooth shape K2 as shown in Fig. 12, which appears as "0 (dark portion)", is obtained. Such a binary pattern K2 is stored in the image memory 53 as binarized image data in which the shading pattern K1 is binarized.

That is, the binary pattern K2 is two-dimensional image information having light-dark difference information for each pixel, and an image (two-dimensional) representing a two-dimensional distribution of light-dark differences based on the thickness distribution in the bottom portion 2a of the pocket portion 2 or the like. distribution).

Then, in step S18, the test|inspection control part 52 performs a lump process. Specifically, a connection component is specified for "0 (dark part)" and "1 (bright part)" of the binary pattern K2 acquired in step S17, respectively.

Thereby, in the tooth shape K2 when the pocket part 2 is a good product, as shown in FIG. 12, "0 (arm part) located near the center of the bottom part 2a of the pocket part 2" )", a substantially circular central dark region E1 consisting of a contiguous component, and a substantially circular-circular bright region E2 composed of a contiguous component of "1 (bright)" positioned to surround the periphery; An outer arm region E3 having a substantially circular circular shape is obtained that is composed of a junction component of "0 (dark part)" positioned so as to surround the outside.

Here, the central dark region E1 corresponds to a thick region in the bottom portion 2a of the pocket portion 2 , and the bright region E2 is a thin region in the bottom portion 2a of the pocket portion 2 . Corresponding to the region, the outer arm portion E3 corresponds to the side portion 2b and the leg portion 2c of the pocket portion 2 . Therefore, the bright part area|region E2 corresponds to the bright part shape (bright part distribution shape) in this embodiment, and the center dark part area|region E1 and the outer side dark part area|region E3 correspond to the dark part shape (dark part distribution shape).

Subsequently, in step S19 , the inspection control unit 52 controls the center dark region E1 and the bright region E2, where the position of the inner boundary portion R1 of the bright region E2, which is the boundary portion of the bright region E2, is set in advance. It is determined whether or not the criterion is satisfied (whether or not it is within a predetermined allowable range). In addition, such a determination criterion is acquired in advance by the teaching mode mentioned later, and is set and stored in the memory 55 for determination.

Specifically, as shown in FIG. 13 , each point (each coordinate position) in the entire circumferential direction of the inner boundary portion R1 is greater than the inner boundary minimum value R1min, respectively, in the outer area in the pocket diameter direction (the side farther from the pocket center position) It is determined whether or not it is located in the inner region in the pocket radial direction (the side closer to the pocket center position) than the inner boundary maximum value R1max. Here, if affirmative determination is made, the process proceeds to step S20, and if negative determination is made, the pocket portion 2 corresponding to the current pocket number C is regarded as a defective product, and the flow proceeds to step S22 as it is.

In step S20, the inspection control unit 52 determines that the position of the outer boundary portion R2 of the bright area E2, which is the boundary between the bright area E2 and the outer dark portion E3, satisfies a predetermined determination criterion set in advance. It is determined whether or not (whether or not it is within a predetermined allowable range). Similar to the above, such a determination criterion is acquired in advance by the teaching mode mentioned later, and is set and stored in the memory 55 for determination.

Specifically, as shown in FIG. 13 , each point (each coordinate position) in the entire circumferential direction of the outer boundary portion R2 is a region outside the pocket radial direction (the side farther from the pocket center position) than the outer boundary minimum value R2min, respectively. It is determined whether or not it is located in the inner region in the pocket radial direction (the side closer to the pocket center position) than the outer boundary maximum value R2max. Here, if affirmative determination is made, the process proceeds to step S21, and if negative determination is made, the pocket portion 2 corresponding to the current pocket number C is regarded as a defective product, and the flow proceeds to step S22 as it is.

In step S21, the inspection control unit 52 considers that the pocket portion 2 corresponding to the current pocket number C is defective, and uses the value of the pocket defective product flag corresponding to the pocket number C. "1" is set, and the flow advances to step S22.

That is, in the present embodiment, the position of the inner boundary portion R1 of the bright region E2 (the boundary between the central dark region E1 and the bright region E2) is determined in the pocket radial direction as the inner region in the pocket radial direction. The position of the outer boundary portion R2 (the boundary portion between the bright area E2 and the outer arm portion E3) of the bright area E2 without departing from the outer area is also determined in the pocket radial direction as the inner area in the pocket radial direction. When the central dark region E1 and the bright region E2 are molded into an appropriate two-dimensional shape in the bottom portion 2a without departing from the outer region, the molding state (thickness distribution state) of the bottom portion 2a can be determined to be appropriate, and since it can be estimated that the molding state (thickness distribution state) of the side portion 2b and the leg portion 2c is also appropriate, it is determined by this that the molding state of the pocket portion 2 is appropriate. .

Accordingly, the quality determination means in the present embodiment is constituted by the function of executing the quality determination processing (quality determination step) of the steps S19 and S20 regarding the molding state of the pocket portion 2 .

After that, the inspection control unit 52 adds "1" to the current pocket number C in step S22, and then returns to step S15.

Here, if the newly set pocket number C is still less than or equal to the number of pockets N ("10" in this embodiment), the flow advances to step S16 again, and the above series of processing is repeatedly executed.

On the other hand, if it is determined that the newly set pocket number C exceeds the number of pockets N, it is considered that the quality determination processing for all pocket portions 2 has been completed, and the flow advances to step S23.

In step S23, the test|inspection control part 52 determines whether the value of the pocket good quality flag of all the pocket parts 2 within the test|inspection range is "1". Thereby, it is determined whether the PTP sheet 1 corresponding to the said test|inspection range is a good product or a defective product.

In the case of affirmative judgment here, that is, when all pocket parts 2 within the inspection range are "good" and there is no one pocket part 2 judged as "defective", in step S24, the It is determined that the PTP sheet 1 corresponding to the inspection range is "good", and this inspection routine is ended.

On the other hand, when negative determination is made in step S23, that is, when there is at least one pocket portion 2 determined as "defective" within the inspection range, in step S25, the PTP corresponding to the inspection range It is determined that the sheet 1 is "defective", and this inspection routine is ended.

In addition, in the good product determination processing of step S24 and the defective product determination processing of step S25, the inspection control unit 52 calculates the inspection result regarding the PTP sheet 1 corresponding to the inspection range in the calculation result storage device. It stores in (54) and outputs to the filling control device (82).

Next, the teaching mode in which the determination criteria used for the said pocket part inspection are acquired and set in advance are demonstrated.

Specifically, the inner boundary minimum value R1min and the inner boundary maximum value R1max used when determining the quality of the inner boundary portion R1, and the outer boundary used when determining the quality of the outer boundary portion R2 The minimum value R2min and the outer boundary maximum value R2max are acquired and set.

In the teaching mode, first, a good-quality container film 3 prepared in advance (the container film 3 in which the good-quality pocket portion 2 is molded) is imaged by the camera 51, and the same process as the above inspection routine is performed. , extract the shading pattern K1 generated in the pocket portion 2 of the good product.

Thereafter, binarization processing is performed on the light and shade pattern K1 of the non-defective product to obtain the non-defective product color pattern K2, and at the same time, a rough treatment is performed on this, and the bottom of the pocket portion 2 of the non-defective product is binarized. The central dark region E1, the bright region E2, and the outer dark region E3 according to (2a) are obtained.

Then, based on the central position of the bottom portion 2a of the pocket portion 2, the bright area E2 is enlarged by a predetermined amount, and the inner boundary portion R1 of the enlarged bright area E2 is defined as the inner boundary. The maximum value R1max is set in the determination memory 55, and the outer boundary portion R2 of the enlarged bright area E2 is set in the determination memory 55 as the outer boundary maximum value R2max. .

Then, with reference to the central position of the bottom portion 2a of the pocket portion 2, the bright area E2 is reduced by a predetermined amount, and the inner boundary portion R1 of the reduced bright area E2 is cut inside. While setting in the judgment memory 55 as the boundary minimum value R1min, the outer boundary portion R2 of the reduced bright area E2 is set in the judgment memory 55 as the outer boundary minimum value R2min. This ends the teaching mode.

In addition, the acquisition method of a determination criterion is not limited to the said structure, You may employ|adopt another method. For example, you may make it acquire a determination criterion as follows.

First, on the basis of the pocket radial central portion of the bright area E2, the bright area E2 is expanded in the pocket diameter direction by a predetermined amount, and the inner boundary portion R1 of the expanded bright area E2 is set as the inner boundary The minimum value R1min is set in the judgment memory 55, and the outer boundary portion R2 of the expanded bright area E2 is set in the judgment memory 55 as the outer boundary maximum value R2max. .

Then, with reference to the central portion in the pocket radial direction of the bright area E2, the bright area E2 is contracted in the pocket radial direction by a predetermined amount, and the inner boundary portion R1 of the contracted bright area E2 is cut inside. The boundary maximum value R1max is set in the determination memory 55, and the outer boundary portion R2 of the shrunk bright area E2 is set in the determination memory 55 as the outer boundary minimum value R2min. .

As described above, according to the present embodiment, electromagnetic waves are emitted from the lighting device 50 to the container film 3 at every interval at which the conveyance of the container film 3 in which the pocket portion 2 is formed is temporarily stopped. At the same time as being irradiated, an electromagnetic wave (ultraviolet light) that has passed through the container film 3 is imaged by a camera 51, and a shading pattern generated on the bottom portion 2a of the pocket portion 2 in the acquired transmitted image data ( By extracting K1) and comparing it with a predetermined criterion, it is configured to determine whether or not the molded state of the pocket part 2 is good or bad.

With such a configuration, not only the quality determination regarding the molded state (thickness distribution state) of the bottom part 2a of the pocket part 2 but also the molded state of the side part 2b and the leg part 2c of the pocket part 2 It is also possible to perform a judgment regarding (thickness distribution state), and the presence or absence of variation in thickness distribution in the side part 2b of the pocket part 2 etc., etc. shaping|molding of the side part 2b etc. of the pocket part 2 Defects (thickness defects) can be detected more precisely.

Moreover, in this embodiment, since it becomes possible to grasp|ascertain the shaping|molding state of the whole periphery of the side part 2b with one imaging of imaging the bottom part 2a of the pocket part 2, the speedup of a test|inspection and furthermore, a blister pack productivity can be improved.

In addition, in this embodiment, the container film having transmissive properties is inspected using, as electromagnetic waves, ultraviolet light with a wavelength of 253 ± 20 nm at which the transmittance of the container film 3 is about 30 ± 10%. have. Since the transmittance of ultraviolet light is low compared with visible light and it is difficult to permeate|transmit the container film 3 which has translucency, the test|inspection regarding the shaping|molding state of the pocket part 2 can be performed more appropriately. Moreover, it becomes easy to generate|occur|produce a difference in the transmittance|permeability of the light in the thin site|part and the thick site|part of the bottom part 2a of the pocket part 2, and a test|inspection can be performed more appropriately.

In addition, in this embodiment, the determination standard used for pocket part inspection is previously determined based on the shading pattern K obtained by imaging the pocket part 2 of a good quality with the camera 51 in teaching mode. Thereby, even when the shape and thickness distribution of the bottom part 2a of the pocket part 2 are complicated, a determination criterion can be set comparatively easily.

[Second embodiment]

Next, with reference to FIG. 14, 2nd Embodiment is demonstrated in detail. It is a flowchart which shows the flow of the pocket part test|inspection in this embodiment. In addition, about the part overlapping with the 1st Embodiment mentioned above, while using the same member name and the same code|symbol, the detailed description is abbreviate|omitted, and the following description will focus on the part different from 1st Embodiment. .

When the predetermined range of the container film 3 in which the pocket part 2 was shape|molded by the pocket part shaping|molding apparatus 16 once stops in the pocket part inspection apparatus 21, the inspection control part 52 firstly controls the container film 3 ), an irradiation process (irradiation process) of irradiating electromagnetic waves (ultraviolet light) with the illumination device 50 is performed, and an imaging process (imaging process) by the camera 51 is performed.

Then, when the transmitted image data of the container film 3 is read into the image memory 53, the inspection control unit 52 first executes an inspection image acquisition process (step T11). In addition, since this process is the same process as step S11 of 1st Embodiment, detailed description is abbreviate|omitted.

When an inspection image is acquired, the inspection control part 52 then performs mask processing in step T12. In addition, since this process is the same process as step S12 of 1st Embodiment, detailed description is abbreviate|omitted.

Then, in step T13, the inspection control unit 52 sets "0" as the value of the pocket defective product flag of all the pocket portions 2, and then, in step T14, the calculation result storage device The initial value "1" is set as the value (C) of the pocket number counter set in (54).

Then, in step T15, the inspection control unit 52 determines whether the pocket number C is equal to or less than the number of pockets N per inspection range. In the case of affirmative determination, the process proceeds to step T16, where the inspection control unit 52 extracts the shades and shades corresponding to the pocket portion 2 of the current pocket number C (light and shade extraction process). run In addition, since this process is the same process as step S16 of 1st Embodiment, detailed description is abbreviate|omitted.

Subsequently, in step T17, the inspection control unit 52 executes a defective area specifying process. In the present embodiment, it is first determined whether the luminance value of each pixel of the shading pattern K1 extracted in step T16 satisfies a predetermined determination criterion preset for each pixel (whether or not it is within a predetermined allowable range) and a pixel that deviates from the above criterion is specified as a defective area.

Specifically, as shown in Fig. 15, whether the luminance value of each pixel of the shading pattern K1 is smaller than the upper luminance limit value Hmax for each pixel and greater than the lower luminance limit value Hmin for each pixel. to judge These determination criteria (luminance upper limit value Hmax and brightness lower limit value Hmin) are acquired in advance by the teaching mode mentioned later, and are set and stored in the memory 55 for determination.

15 is a luminance value (H) for each pixel along the line A-A' of the shaded pattern K1 shown in FIG. 10, and the upper limit value (Hmax) for luminance for each pixel along the line A-A' and a graph showing the luminance lower limit value (Hmin).

Then, as shown in FIG. 16 , the inspection control unit 52 sets a pixel that falls within the determination criteria (luminance upper limit value Hmax and luminance lower limit value Hmin) among the pixels constituting the shading pattern K1 as “1 (bright light). )", and the image J for determination in which the pixel specified as a defective area deviates from the determination standard is indicated as "0 (dark portion)" is acquired.

Then, in step T18, the test|inspection control part 52 performs a lump process. Specifically, each connected component is specified for "0 (dark part)" and "1 (bright part)" obtained in step T17, and the connected component of "0 (dark part)" specified as a defective area is The total defective area Px, which is the sum of the area values P, is obtained.

Then, in step T19, the inspection control unit 52 determines whether or not the total defective area Px calculated in step T18 is equal to or less than a predetermined criterion Po. That is, by judging whether or not the total defective area Px is within the allowable range, the quality determination regarding the molding state of the said pocket part 2 is performed. Accordingly, the quality determination means in the present embodiment is constituted by the function of executing the quality determination process (quality determination process) of step T19.

Without being limited thereto, here, for example, a method of determining whether or not the one with the largest area is within the allowable range among the connected components of "0 (dark part)" specified as the defective region, and the connected component of "0 (dark part)" It is good also as a structure which performs good/failure determination by another method, such as a method of determining the degree of deviation (distribution condition) of Of course, it is good also as a structure which determines as a defective product if even one defective area exists regardless of the magnitude.

If it is affirmatively determined in step T19 that the total defective area Px is equal to or less than the determination criterion Po, the flow advances to step T20. On the other hand, if negative determination is made here, the pocket portion 2 corresponding to the current pocket number C is regarded as a defective product, and the process proceeds to step T21 as it is.

In step T20, the inspection control unit 52 considers that the pocket portion 2 corresponding to the current pocket number C is defective, and sets the value of the pocket defective product flag corresponding to the pocket number C to the value of the pocket portion 2 corresponding to the pocket number C. "1" is set, and the flow advances to step T21.

In step T21, the inspection control unit 52 adds "1" to the current pocket number C, and then returns to step T15.

Here, if the newly set pocket number (C) is still less than or equal to the number of pockets (N), the flow advances to step T16 again, and the above series of processing is repeatedly executed.

On the other hand, if it is determined that the newly set pocket number C exceeds the number N of pockets, it is considered that the quality determination processing for all pocket portions 2 has been completed, and the flow advances to step T22.

In step T22, the inspection control unit 52 determines whether or not the value of the pocket defective flag of all the pocket units 2 within the inspection range is “1”. Thereby, it is determined whether the PTP sheet 1 corresponding to the said test|inspection range is a good product or a defective product.

In the case of affirmative judgment here, that is, when all pocket parts 2 within the inspection range are "good" and there is no one pocket part 2 judged as "defective", in step T23, It is determined that the PTP sheet 1 corresponding to the inspection range is "good", and this inspection routine is ended.

On the other hand, if negative determination is made in step T22, that is, when even one of the pocket portions 2 determined as "defective" exists within the inspection range, in step T24, the PTP corresponding to the inspection range It is determined that the sheet 1 is "defective", and this inspection routine is ended.

Next, the teaching mode of this embodiment is demonstrated. Specifically, the luminance upper limit value Hmax and the luminance lower limit value Hmin used when determining whether each pixel constituting the shading pattern K1 is good or bad are acquired and set.

In the teaching mode, the pre-prepared non-defective container film 3 (the container film 3 in which 10 non-defective pocket parts 2 are formed) is imaged by the camera 51, and the same process as the inspection routine is performed. After that, the shading patterns K1 generated in the pocket portions 2 of 10 good products are extracted.

Thereafter, for each pixel, an average luminance value, which is an average value of luminance values of each pixel of the 10 non-defective shade patterns K1, is calculated. Subsequently, for each pixel, a value obtained by adding a predetermined offset value ? to the average luminance value is set in the determination memory 55 as the luminance upper limit value Hmax. Similarly, for each pixel, a value obtained by subtracting the predetermined offset value ? from the average luminance value is set in the determination memory 55 as the luminance lower limit value Hmin. This ends the teaching mode.

As mentioned above, according to this embodiment, a more detailed test|inspection can be performed about the shaping|molding state of the pocket part 2, and the shaping|molding defect of the pocket part 2 can be detected more precisely.

In addition, it is not limited to the description of each said embodiment, For example, you may implement as follows. Of course, other application examples and modifications not illustrated below are of course possible.

(a) The configuration of the blister pack to be inspected is not limited to each of the above embodiments. For example, in each of the above embodiments, the PTP sheet 1 for accommodating the contents such as the tablet 5 is exemplified as the blister pack.

Not limited to this, for example, a peel-open type blister pack (potion pack containing food, etc.) that removes the contents by peeling the cover film from the container film, or a blister pack containing and conveying contents such as electronic components ( Carrier tape, etc.), various blister packs, such as a blister pack of a type in which a cover film is not attached to the container film and a base is assembled, can be inspected.

(b) The configuration of the pocket portions in the container film, such as the shape, size, depth, number, arrangement, etc. of the pocket portions is not limited to each of the above embodiments, and may be appropriately selected according to the type, shape, use, and the like of the contents. For example, the bottom part 2a of the pocket part 2 may have a substantially triangular shape, a substantially elliptical shape, a substantially rectangular shape, a substantially rhombic shape, etc. in planar view.

More specifically, for example, the blister pack 100 as shown in FIGS. 17 ( a ) and ( b ) may be used as an inspection target. The blister pack 100 has a pocket portion 101 . The pocket portion 101 is composed of a bottom portion 101a having a rectangular shape in plan view, and a side portion 101b having a rectangular frame shape connected to the periphery of the bottom portion 101a. The bottom portion 101a of the pocket portion 101 is formed with a plurality of bulging ribs 101c bulging toward the inside of the pocket.

With respect to such a pocket part 101, based on the inspection procedure of the said 1st Embodiment, the shading image which arises on the bottom part 101a is extracted (step S16), and a binarization process (step S17) and When lump processing (step S18) is performed, as shown in FIG.17(c), the dark area|region E11 corresponding to the thick area|region (bulging rib 101c), and the thin area|region (bottom part 101a) ) A bright area E12 corresponding to the normal portion) is obtained.

Then, the inner boundary portion R11 of the bright area E12, which is the boundary between the dark area E11 and the bright area E12, meets a predetermined criterion (the inner boundary minimum value R11min and the inner boundary maximum value R11max). By judging whether or not the outer boundary portion R12 of the bright area E12 satisfies predetermined judgment criteria (outer boundary minimum value R12min and outer boundary maximum value R12max), it is determined whether or not the pocket It is possible to determine whether or not the part 101 is molded.

(c) The material, layer structure, etc. of a container film or a cover film are not limited to each said embodiment. For example, in each of the above embodiments, the container film 3 is made of a colorless and transparent thermoplastic resin material such as PP or PVC, and has light-transmitting properties.

Not limited to this, for example, the container film 3 may be formed of a colorless translucent resin material, a colored transparent or colored translucent resin material, as well as an opaque material (opaque resin material, metallic material, etc.). As a metal material, what used aluminum as a main material, such as an alumina laminate film, is mentioned as an example, for example.

In addition, as to the container film 3 formed of an opaque material, inspection becomes possible by irradiating from the illumination device 50 the electromagnetic wave which can transmit opaque material, such as X-ray, for example, as mentioned later.

(d) The shaping|molding method of a pocket part is not limited to each said embodiment. For example, in each of the above embodiments, the pocket portion 2 is formed by a plug-assisted air pressure molding method.

Instead of this, for example, a vacuum forming method, a pressure forming method, a plug forming method, etc., a part of the flat container film 3 (the forming scheduled portion 3a) is partially heated and softened, and various known forming methods are employed. can

However, in the case where the container film is an alumina film, heating may cause peeling between the adhesive layers and tearing during molding, so cold forming (cold forming) without prior heating is suitable. Even in such a case, at the time of pocket molding, for example, the vicinity of the pinching part is easily stretched, and since the container film is not necessarily stretched uniformly, there is a possibility that the thickness of each part of the pocket part may vary.

(e) The configuration of the irradiation means and the imaging means is not limited to the above embodiment. For example, in each of the above embodiments, the lighting device 50 is arranged on the protruding side of the pocket portion 2 and the camera 51 is arranged on the opening side of the pocket portion 2, but both It is good also as a structure in which the positional relationship of was reversed.

Further, in each of the above embodiments, the lighting device 50 is configured to irradiate electromagnetic waves including ultraviolet light. However, depending on the material, color, etc. of the container film 3 , the electromagnetic waves irradiated from the lighting device 50 . You may change a wavelength suitably. Of course, the band pass filter 51a is omitted here and it is good also as a structure in which the electromagnetic wave which is irradiated from the illumination device 50 and has passed through the container film 3 is incident on the camera 51 directly.

For example, when the container film 3 is comprised with the opaque material which consists of aluminum etc., you may decide to irradiate X-ray from the illumination device 50. As shown in FIG. In addition, when the container film 3 is comprised by the translucent material with a color, you may irradiate visible light, such as white light, from the illuminating device 50. FIG.

(f) In each of the above embodiments, ultraviolet light having a wavelength of 253±20 nm at which the transmittance of the container film 3 is about 30±10 percent is used for inspection, but electromagnetic waves of a different wavelength are used It is good also as a structure which performs an inspection by doing this.

However, even if the transmittance of the electromagnetic wave passing through the container film 3 is too high or too low, there is a fear that a difference in the light transmittance between the thin portion and the thick portion of the bottom portion 2a of the pocket portion 2 may hardly occur. It is preferable to use an electromagnetic wave having a wavelength at which the transmittance of the container film 3 is 15% or more and 60% or less, more preferably, an electromagnetic wave having a wavelength in which the transmittance of the container film is 20% or more and 50% or less.

(g) The quality determination method regarding the shading pattern which arises in the bottom part of a pocket part etc. is not limited to the said embodiment.

For example, in the said 1st Embodiment, the pocket part 2 is determined based on the binary pattern K2 which binarized the shading pattern K1 by determining whether the formation range of the bright area|region E2 etc. is legal. It has a configuration that performs a judgment of good or bad regarding the molding state of

It is not limited to this, For example, differential processing etc. are performed with respect to the shading pattern K1, outline parts, such as the bright area|region E2, are extracted, and it is determined whether the formation range of the bright area|region E2 etc. is appropriate. It is good also as a structure which performs a quality judgment by doing this.

In addition, for example, the shading pattern generated on the bottom part 2a of the pocket part 2 to be inspected and the shading pattern generated on the bottom part 2a of the pocket part 2 of the good quality obtained in advance can be matched with pattern matching, etc. It is good also as a structure which compares by a technique, and performs good/failure determination based on the degree of agreement.

(h) In each of the above embodiments, the judgment criteria used for the judgment of good or bad are determined based on the shading pattern K1 obtained by imaging the pocket portion 2 of the non-defective product with the camera 51 . It is not limited to this, It is good also as a structure which calculates and sets a determination standard based on the design data of the pocket part 2 etc.

(i) In each of the above embodiments, the pocket portion inspection device 21 is disposed in the PTP packaging machine (blister packaging machine) 11 that performs up to the filling of the contents such as the tablet 5 . Not limited to this, for example, in a production line in which the production of the container film 3 and the packaging of the contents are separately performed, the production device of the container film 3 is provided with the pocket part inspection device 21 . You can do it. Moreover, it is good also as a structure provided with the inspection apparatus which test|inspects the container film 3 in which the pocket part 2 was shape|molded offline separately from the manufacturing apparatus of the container film 3 .

1: PTP sheet
2: Pocket
2a: bottom
2b: side
2c: Legs
3: container film
4: cover film
5: Tablets
11: PTP Packing Machine
15: heating device
16: pocket forming device
21: pocket inspection device
50: lighting device
51: camera
52: inspection control unit
53: picture memory
54: output result storage
55: memory for judgment
C: Pocket number
E1: central dark area
E2: List area
E3: outer arm area
L: luminance threshold
K1: joke shape
K2: Ichi shape
R1: inner boundary
R1min: inner boundary minimum
R1max: inner boundary maximum
R2: outer boundary
R2min: outer boundary minimum
R2max: outer boundary maximum
W: pocket rim

Claims (10)

In the inspection device for inspecting the molding state of the pocket portion of the blister pack,
an irradiation means capable of irradiating a predetermined electromagnetic wave to the container film in which the pocket portion is molded;
an imaging means provided on the opposite side to the irradiation means through the container film and capable of acquiring image data by imaging the electromagnetic wave passing through at least the bottom of the pocket portion;
shading pattern extracting means capable of extracting a shading pattern generated in the bottom portion of the pocket portion by irradiation of the electromagnetic wave based on the image data acquired by the imaging means; and
and good or bad judgment means capable of executing good or bad judgment regarding the molding state of at least the side of the pocket part by comparing the shaded pattern extracted by the shade pattern extracting means with a predetermined criterion set in advance. The method of claim 1,
The good or bad determination means,
After binarizing the shading pattern to a predetermined threshold value, among the binary patterns obtained by this, a light portion pattern that is a connecting component of a bright portion that is equal to or greater than the threshold value or a dark portion pattern that is a connected component of a dark portion that is less than the threshold is determined as a predetermined value. An inspection apparatus characterized by executing the above-mentioned good or bad judgment by comparing it with a judgment criterion. 3. The method of claim 2,
The good or bad determination means,
The said good part determination is performed by judging whether the position of the boundary part of the said bright part shape or the said dark part shape satisfies a predetermined|prescribed judgment criterion, The said inspection apparatus characterized by the above-mentioned. The method of claim 1,
The good or bad determination means,
It is determined whether the luminance of each pixel constituting the shading pattern satisfies a predetermined criterion, and a pixel that does not satisfy the criterion is identified as a defective region, and then the defective region is determined as a predetermined criterion. Inspection apparatus, characterized in that by determining whether or not satisfies the above-mentioned quality determination. 5. The method according to any one of claims 1 to 4,
The container film is made of a resin film material having light-transmitting properties,
The said irradiation means is comprised so that ultraviolet light can be irradiated as the said electromagnetic wave, The inspection apparatus characterized by the above-mentioned. 6. The method according to any one of claims 1 to 5,
The electromagnetic wave includes an electromagnetic wave having a wavelength at which the transmittance of the container film is 15% or more and 60% or less. 7. The method according to any one of claims 1 to 6,
The criterion for the determination is
The inspection apparatus is determined based on the shade pattern obtained by imaging the pocket portion of the non-defective product by the imaging means. 8. The method according to any one of claims 1 to 7,
The pocket portion is an inspection device, characterized in that the thermoformed to the flat container film. A blister packaging machine comprising the inspection device according to any one of claims 1 to 8. A method for manufacturing a blister pack in which a predetermined content is accommodated in a pocket formed in a container film, and a cover film is mounted to close the pocket,
A pocket portion forming step of forming the pocket portion with respect to the container film conveyed in a strip shape;
A filling process of filling the contents into the pocket portion,
A mounting process of attaching the cover film in the form of a belt to the container film filled with the contents in the pocket portion to close the pocket portion;
A separation process of separating the blister pack from the band-shaped body in which the cover film is mounted on the container film, and
and an inspection process of inspecting the molding state of the pocket portion of the blister pack,
In the inspection process,
an irradiation step of irradiating a predetermined electromagnetic wave to the container film in which the pocket portion is molded;
an imaging step of acquiring image data by imaging the electromagnetic wave passing through at least the bottom of the pocket portion;
a shading pattern extraction step of extracting a shading pattern generated in the bottom portion of the pocket portion by irradiation of the electromagnetic wave based on the image data acquired by the imaging; and
and a quality determination step of determining whether or not the molded state of at least the side of the pocket portion is formed by comparing the extracted shading pattern with a predetermined determination criterion set in advance.

Images