JP4335822B2 - Inspection device and PTP packaging machine - Google Patents

Description

  The present invention belongs to a technical field including an inspection apparatus that statistically processes inspection measurement results related to tablets and a PTP packaging machine including the inspection apparatus when manufacturing a PTP sheet.

  In general, in the process of manufacturing a PTP sheet, after a tablet is filled in a pocket portion, the tablet is imaged with a camera or the like before attaching a cover film for sealing the pocket portion. Is generally inspected.

  There are various inspection items for such appearance inspection, but for inspection items such as tablet area value, tablet length in irregular tablets, and tablet color, the test measurement results should be processed statistically. Thus, the determination value is determined.

For example, a determination value is determined by creating a histogram (a columnar graph representing a frequency distribution) or the like from an inspection measurement result (see, for example, Patent Document 1).
JP-A-10-307109

  However, it is difficult to determine the determination value even if a histogram based simply on the inspection measurement result is created. The reason is that it is necessary to determine the determination value in consideration of the “good product allowable limit value” and the “good product error rate”.

  The “non-defective product tolerance limit value” indicates a limit acceptable as a non-defective product, and is determined for each product by performing validation. That is, since the acceptable product tolerance limit value is determined in advance, the determination value can be determined in consideration of the acceptable product tolerance limit value.

  However, the “non-defective product error rate” is a ratio at which a non-defective product is judged as a defective product, and this is different for each user company using the inspection apparatus. Therefore, it is difficult to uniformly determine the determination value from the histogram of the inspection measurement result, and it is also difficult to determine whether or not the set determination value is appropriate.

  The present invention has been made to solve the above-described problems, and provides an inspection apparatus and a PTP packaging machine that are easy for an operator to set a judgment value and confirm the validity of the judgment value. With the goal.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. Display means for displaying information;
Based on the image data of the tablet to be inspected, measurement for inspection is performed, and inspection processing for inspecting the tablet is performed by performing inspection based on the inspection measurement result using the set determination value, and the inspection At the time of processing, with respect to a predetermined inspection item, statistical processing for statistically measuring the inspection measurement result, and the frequency distribution of the inspection measurement result based on the result of the statistical processing, using the display unit for each inspection item Processing execution means for executing display processing to be displayed;
For each inspection item, in an inspection apparatus including a non-defective product tolerance limit value, a non-defective product error rate, and an input unit for inputting the determination value,
In the display process, the processing execution means corresponds to the frequency distribution, and based on the input acceptable product tolerance limit value and acceptable product error rate, as the determination value , to satisfy these acceptable product tolerance limit value and acceptable product error rate. An inspection apparatus configured to display a limit of a determination category which is a settable frequency distribution category.

  In the inspection apparatus described in the means 1, the inspection processing is executed by the processing execution means, and the statistical processing and the display processing are executed. By the inspection process, measurement for inspection is performed based on the image data of the tablet to be inspected, and the tablet is inspected by performing inspection based on the inspection measurement result using the set determination value. In the inspection process, statistical processing and display processing are executed. The statistical processing is to statistically measure the inspection measurement result for a predetermined inspection item, and the display processing is to display the frequency distribution of the inspection measurement result for each inspection item using the display means based on the result of the statistical processing. To do.

  Here, the predetermined inspection items include, for example, items such as a tablet area value, a tablet length in a deformed tablet, a tablet color, and a stamped area value of a stamped tablet. In this sense, “the predetermined inspection item may be at least one of a tablet area value, a tablet length in a deformed tablet, a tablet color, and a stamped area value of a stamped tablet”. In the tablet area value inspection, the tablet chipping is inspected by measuring the tablet area value. The inspection of the length of the tablet in the deformed tablet is to inspect the length by measuring the length in the longitudinal direction of the tablet. In the tablet color inspection, the color of the tablet is inspected based on the RGB luminance. The inspection of the stamped area value of the stamped tablet is to inspect the area value by measuring the area value of the stamped portion. Therefore, by executing the inspection process, for example, the tablet area value, the tablet length, the RGB luminance, and the area value of the stamped portion are acquired as the inspection measurement results for the above-described inspection items. In the statistical process, the inspection measurement result is statistically displayed, and the frequency distribution is displayed by the display process.

Here, in particular, in the means 1, the process execution means displays the limit of the judgment category in the display process, corresponding to the frequency distribution, based on the acceptable product tolerance limit value and the acceptable product error rate. In this specification, the judgment category refers to a category of the frequency distribution corresponding to the judgment value.

  The acceptable product tolerance limit value indicates the inspection measurement value that is acceptable as a acceptable product, while the acceptable product error rate indicates that a tablet that has obtained an inspection measurement value that satisfies the acceptable product tolerance value is determined as a defective product. It is a ratio (the same applies below). Therefore, it is necessary to set a judgment value that satisfies the acceptable product tolerance limit value, and if the judgment value is made difficult, the good product error rate increases, so that the good product error rate set by each user company is satisfied. It is necessary to set a judgment value.

In this respect, according to the means 1, based on the acceptable product tolerance limit value and the acceptable product error rate, in order to satisfy the acceptable product tolerance limit value and the acceptable product error rate, a determination classification that is a classification of the frequency distribution that can be set as the determination value . Since the limit is displayed, it is possible to set the determination value so that the determination classification is between the limit based on the acceptable product allowable limit value and the limit based on the non-defective product error rate. On the other hand, if the judgment category corresponding to the preset judgment value is between both limits, it can be judged that the judgment value is appropriate. Therefore, it becomes easy to set the judgment value and confirm the validity of the judgment value.

Incidentally, the inspection apparatus, good products allowable limit, good mistake rate, and, an input means for inputting the decision value. In this way, setting of the setting value is facilitated in that the setting value can be easily changed when the determination value once set lacks validity during the inspection. Even when the tablet to be inspected is changed, the acceptable product tolerance limit value and the acceptable product error rate can be input via the input means, so that the inspection can be carried out smoothly.

  The acceptable product allowable limit value may be entered as a numerical value. Alternatively, the displayed frequency distribution (for example, the category corresponding to the acceptable product tolerance limit value) may be input by locating with a pointing device or the like. Similarly, regarding the determination value, the determination value itself may be input as a numerical value, or the displayed frequency distribution (determination category) may be input by locating with a pointing device or the like. .

Means 2 . In the inspection apparatus according to means 1 ,
The said process execution means is comprised so that the display based on the said determination value might be made to respond | correspond to the said frequency distribution in the said display process.

According to the means 2 , since the display based on the determination value is made corresponding to the frequency distribution, the validity of the determination value can be confirmed more easily.

  Note that the display based on the determination value may display the determination value itself, for example. Or you may employ | adopt the structure shown next.

Means 3 . In the inspection apparatus according to means 2 ,
The display based on the determination value is performed in a format that allows the determination classification to be distinguished from the frequency distribution classification.

According to the means 3 , the display based on the determination value is performed in a format in which the determination classification can be distinguished among the frequency distribution classifications. For example, when the frequency distribution is shown in a tabular form, it is conceivable that the background color of the determination section column is different from the background color of the other section columns. In this way, even an inexperienced worker can instantly understand which category the current judgment value corresponds to, so the effect of facilitating confirmation of the validity of the judgment value stands out. .

Means 4 . In the inspection apparatus according to any one of means 1 to 3 ,
The processing execution means corresponds to the frequency distribution in the display process, and a non-defective product occurrence rate that is a ratio of the frequency of the non-defective product when a tablet that obtains an inspection measurement result equal to or higher than the acceptable product limit value is regarded as a good product. An inspection apparatus configured to display

According to the means 4 , the process execution means further displays the non-defective product occurrence rate in the display process. The non-defective product occurrence rate is a ratio of the frequency of the non-defective product when a tablet that has obtained a test measurement result equal to or higher than the acceptable product limit value is regarded as a good product (the same applies to the following). In this way, compared with the case where the inspection measurement result is indicated only by the frequency, it is possible to easily deal with the non-defective product error rate indicated by the ratio. As a result, it contributes to the purpose of facilitating setting of the judgment value and confirmation of the validity of the judgment value.

Means 5 . Display means for displaying information;
Based on the image data of the tablet to be inspected, measurement for inspection is performed, and inspection processing for inspecting the tablet is performed by performing inspection based on the inspection measurement result using the set determination value, and the inspection At the time of processing, with respect to a predetermined inspection item, statistical processing for statistically measuring the inspection measurement result, and the frequency distribution of the inspection measurement result based on the result of the statistical processing, using the display unit for each inspection item Processing execution means for executing display processing to be displayed;
For each inspection item, in an inspection apparatus including a non-defective product tolerance limit value, a non-defective product error rate, and an input unit for inputting the determination value,
In the display process, the processing execution means corresponds to the frequency distribution, and based on the input acceptable product tolerance limit value and acceptable product error rate, as the determination value , to satisfy these acceptable product tolerance limit value and acceptable product error rate. The limit of the judgment category that is a settable frequency distribution category is displayed, and the display based on the judgment value is performed in a format that can distinguish the judgment category in the frequency distribution category, and the acceptable product tolerance limit An inspection apparatus configured to display a non-defective product occurrence rate, which is a ratio of the frequency of non-defective products when a tablet that has obtained an inspection measurement result equal to or greater than the value is regarded as a non-defective product.

According to the means 5 , since the limit of the judgment category is displayed based on the acceptable product tolerance limit value and the acceptable product error rate, the judgment category is placed between the limit based on the acceptable product tolerance limit value and the limit based on the acceptable product error rate. A judgment value can be set. On the other hand, if the judgment category corresponding to the preset judgment value is between both limits, the judgment value can be judged as appropriate. Therefore, it becomes easy to set the judgment value and confirm the validity of the judgment value. In addition, display based on the determination value is performed in a format in which the determination classification can be distinguished among the sections of the frequency distribution. As a result, even an inexperienced worker can instantly grasp which classification the current judgment value corresponds to, so that the effect of facilitating confirmation of the judgment value is conspicuous.

Similarly to the configuration of the means 1 , an input means for inputting a non-defective product tolerance limit, a non-defective product error rate, and a judgment value is provided. In this way, setting of the setting value is facilitated in that the setting value can be easily changed when the determination value once set lacks validity during the inspection. Even when the tablet to be inspected is changed, the acceptable product tolerance limit value and the acceptable product error rate can be input via the input means, so that the inspection can be carried out smoothly.

  Furthermore, since the process execution means displays the non-defective product occurrence rate, it is possible to easily deal with the non-defective product error rate indicated by the ratio as compared with the case where the inspection measurement result is shown only by the frequency. As a result, it contributes to the purpose of facilitating setting of the judgment value and confirmation of the validity of the judgment value.

Means 6 . In the inspection apparatus according to any one of means 1 to 5 ,
The process execution means is configured to execute a set value monitoring process for monitoring validity of the determination value by determining whether or not the determination value exceeds a limit of the determination category based on the non-defective product error rate. Inspection apparatus characterized by being made.

According to the means 6 , it is determined whether or not the determination value exceeds the limit of the determination category based on the non-defective product error rate by the set value monitoring process of the process execution means, and the validity of the determination value is monitored. In this way, the validity of the judgment value can be automatically monitored. That is, the operator does not need to determine the validity of the determination value.

Means 7 . In the inspection apparatus according to means 6 ,
The process execution means executes an information output process for outputting information to the outside when it is determined in the set value monitoring process that the determination value exceeds a limit of the determination category based on the non-defective product error rate. An inspection apparatus characterized by being configured.

According to the means 7, when the information output process of the process execution means determines that the determination value exceeds the limit of the determination category based on the non-defective product error rate in the set value monitoring process, the information is output to the outside. In this case, the information output may be an output of a notification signal for notification. In addition to or in place of the output of such a notification signal, it is possible to output a control signal for a stop instruction to the PTP packaging machine on the assumption that the PTP packaging machine is equipped with this inspection device. Conceivable. In this way, when the judgment value is no longer valid, it is possible to quickly respond. In addition, an appropriate operation can be instructed to the PTP packaging machine.

Means 8 . In the inspection apparatus according to either means 6 or 7 ,
The process execution means performs a determination value adjustment process for automatically adjusting the determination value when it is determined in the set value monitoring process that the determination value exceeds the limit of the determination category based on the non-defective product error rate. An inspection device configured to perform.

According to the means 8, when the judgment value adjustment process of the process execution means determines that the judgment value exceeds the limit of the judgment category based on the non-defective product error rate in the set value monitoring process, the judgment value is automatically adjusted. The In this way, not only the validity of the judgment value is confirmed, but also the setting of the judgment value when the judgment value becomes invalid is automated, reducing the burden on the operator.

  Although the above has been described as an invention of an inspection apparatus, it can also be understood as an invention of a PTP packaging machine as shown below.

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

  Note that the above-described invention is mainly characterized by a series of processes based on image data. As an invention of a program executed by a computer system or a recording medium on which the program is recorded, It can also be captured.

Means 10 . The program for implement | achieving the process performed by the processing execution means with which the inspection apparatus in any one of the means 1 thru | or 8 and the PTP packaging machine of the means 9 are equipped is provided with a computer system.

Means 11 . A recording medium on which the program according to means 10 is recorded.

  Hereinafter, an embodiment will be described with reference to the drawings.

  In this embodiment, by installing the inspection device in the PTP packaging machine, the PTP packaging machine is inspected for defects in the PTP sheet, specifically, abnormalities such as chipping of the tablet surface.

  As shown in FIGS. 2A and 2B, the PTP sheet 1 is attached to the container film 3 as a packaging film having a plurality of pocket portions 2 and the container film 3 so as to close the pocket portions 2. And a sealing film 4 as a covered cover film. The container film 3 is made of, for example, a relatively hard thermoplastic resin material having a predetermined rigidity, such as PP (polypropylene) or PVC (polyvinyl chloride), and has light transparency (here, transparent). Presents). The sealing film 4 is made of aluminum. Each pocket portion 2 contains one tablet 5.

  As shown in FIG. 1, the PTP packaging machine 7 automatically packages the tablets 5 on the container film 3. Specifically, a belt-shaped resin film such as PP or PVC is fed to the heating device 12 and the molding device 13 by the film feed roll 9 and the tension rolls 10 and 11, and the pocket portion 2 for filling the tablet 5 is used as the resin film. Mold. And if the container film 3 in which the pocket part 2 was shape | molded by the resin film is sent to the bottom of the filling apparatus 14, the filling apparatus 14 will automatically fill the tablet 5 in each pocket part 2.

  On the other hand, the sealing film 4 formed in a belt shape is guided toward the film receiving roll 18 via the tension rolls 16 and 17. A heating roll 19 can be pressed against the film receiving roll 18, and a lattice-like line (not shown) formed in a slightly convex shape is provided on the outer peripheral surface of the heating roll 19. The container film 3 and the sealing film 4 are fed between the rolls 18 and 19. The sealing film 4 is attached to the container film 3 by passing both the films 3 and 4 between the rolls 18 and 19 in a heated and pressed state. Thus, a long PTP film 20 in which the tablet 5 is filled in each pocket portion 2 is manufactured.

  Now, on the downstream side of the filling device 14 and the upstream side of the film receiving roll 18 and the heating roll 19, the container film 3 (the filled tablet 5) is inspected along the transfer path of the container film 3. An inspection device 21 is provided. The main purpose of the inspection device 21 is to inspect abnormalities such as chipping in the tablet 5 filled in the pocket portion 2.

  After the inspection, after the sealing film 4 is attached to the container film 3, the PTP film 20 is cut into one PTP sheet by a punching device (not shown). In addition, when a defect is determined by the inspection device 21, the PTP sheet that has been determined to be defective is separately discharged by a defective sheet discharge mechanism (not shown).

  Now, the outline of the PTP packaging machine 7 is as described above. In the following, the inspection apparatus 21 will be described more specifically based on FIG.

  The inspection device 21 includes a camera 23, a process execution device 24, a monitor 25, a keyboard 26, and the like.

  The camera 23 is provided on the opening side of the pocket portion 2 and images the tablet 5 with light emitted from a lighting device (not shown). Image data captured by the camera 23 is converted into digital data inside the camera 23 and then input to the processing execution device 24 in the form of digital data.

  As shown in FIG. 3, the processing execution device 24 includes an image memory 41 for storing image data, an inspection result and statistical data memory 44, a determination memory 45, a camera timing control means 46, a CPU and an input / output interface 47, and the like. It is possible to execute processing of image data as described later, determination of tablet defects (inspection), and the like.

  The two-dimensional image data of the tablet 5 imaged by the camera 23 is converted into digital data and stored in the image memory 41. The image data as the two-dimensional image data may be processed (masking or binarized) in the inspection process. However, since such a processing process is not a characteristic part, description thereof is omitted. .

  The CPU and the input / output interface 47 are for executing various processing programs, sending control signals to the PTP packaging machine 7, and transmitting / receiving various signals such as operation signals from the PTP packaging machine 7. Thereby, for example, the operation stop of the PTP packaging machine 7 can be instructed. The CPU and input / output interface 47 also has a function of sending display data to the monitor 25. With this function, binary or grayscale image data, defect inspection results, statistical data, and the like can be displayed on the monitor 25. Further, the CPU and input / output interface 47 has a function of inputting data from the keyboard 26.

  The inspection result and statistical data memory 44 stores data such as coordinates relating to image data, inspection result data, statistical data obtained by probabilistically processing the inspection result data, and the like. These inspection result data and statistical data can be appropriately displayed on the monitor 25 based on the control of the CPU and the input / output interface 47. Further, the CPU and the input / output interface 47 can send a control signal to the PTP packaging machine 7 based on these inspection result data and statistical data.

  The determination memory 45 stores a determination value for determining whether the tablet 5 is good or bad. The camera timing control means 46 controls the timing at which image data captured by the camera 23 is taken into the image memory 41. Such timing is controlled based on a signal from an encoder (not shown) provided in the PTP packaging machine 7, and images (photographs) in sheet units (for example, PTP sheet units to be punched) by the camera 23 every time the container film 3 is fed by a predetermined amount. Is done.

  Next, the inspection process will be described.

  FIG. 4 is a flowchart showing the inspection process. Prior to the execution of this inspection process, a non-defective product tolerance limit value, a non-defective product error rate, and a judgment value are input for each inspection item via the keyboard 26. The acceptable product tolerance limit value indicates the inspection measurement value that is acceptable as a acceptable product, while the acceptable product error rate indicates that a tablet that obtained an inspection measurement value that is equal to or greater than the acceptable product tolerance value is determined as a defective product. It is a ratio. These are set for each inspection item. Here, in order to simplify the description, a tablet area value inspection, which is an example of the inspection item, will be described.

  In the first step (hereinafter, steps are simply indicated by symbol S) 100, measurement for inspection is performed. Speaking of the tablet area value, the tablet area value is measured here. In addition, a tablet area value shall be memorize | stored as a chipping rate. Specifically, the chipping rate “0” indicates that the tablet has no chipping, the chipping rate “−1” indicates that there is a chipping of 1%, and the chipping rate “−2” indicates a chipping of 2%. Similarly, it is assumed that the chipping rate “−n” has a chipping of n%.

  In subsequent S110, an inspection based on the inspection measurement result is performed using the set determination value. Here, the tablet 5 is inspected by comparing the chipping rate as the inspection measurement result with the determination value. In the present embodiment, it is assumed that the determination value is set to a missing rate “−5”. When the determination value is the chipping rate “−5”, the tablets having the chipping rates “0” to “−4” are determined as non-defective products, and the rest (the chipping rate “−5” to “) are determined as defective products. The

  In the next S120, the inspection measurement result is statistically calculated. Here, the number of appearances for each missing rate is accumulated. The statistical data obtained by statistically inspecting the inspection measurement result is stored in the inspection result and statistical data memory 44.

  In subsequent S130, display processing is performed. Here, the display processing will be described based on the flowchart of FIG.

  In the first step S200 of the display process, the frequency distribution of the inspection measurement result is displayed. In the present embodiment, as shown in FIG. 6, the number of appearances for each tablet area value (missing rate) is displayed.

  In subsequent S210, a limit line based on a preset acceptable product tolerance limit value is displayed, and in next S220, a limit line based on a preset acceptable product error rate is displayed. In the present embodiment, it is assumed that the acceptable product tolerance limit value is set to a missing rate “−5” and the acceptable product error rate is set to 0.3%. Then, as shown in FIG. 6, a limit line L1 based on a non-defective product allowable limit value is displayed between the segment of the missing rate “−5” and the category of the missing rate “−6”. Further, a limit line L2 based on the non-defective product error rate is displayed between the segment of the missing rate “−2” and the category of the missing rate “−3”.

  In subsequent S230, the background color of the determination classification column corresponding to the determination value is changed, the non-defective product occurrence rate is displayed in the next S240, and the present display process is terminated. In this embodiment, since the determination value is the missing rate “−5”, the background color in the column of the division (determination category) M of the missing rate “−5” is shown as hatched in FIG. Changed and displayed. Further, the non-defective product occurrence rate is displayed corresponding to the number of appearances (frequency). The non-defective product occurrence rate indicates a ratio of the number of appearances of a section exceeding the limit line L1. By displaying the non-defective product occurrence rate, it becomes easy to understand the validity of the limit line L2 based on the set good product error rate. In FIG. 6, it is understood that when the determination value is set to the missing rate “−3” of the limit line L 2, the non-defective product error rate is 0.2% and the set good product error rate is 0.3%. If the determination value is set to, for example, the missing rate “−2” beyond the limit line L2, the non-defective product error rate becomes 3%, which exceeds the set non-defective product error rate of 0.3%. Therefore, it can be seen that the limit line L2 is appropriate.

  Returning to the description of FIG. 4, in S140 following the display process, it is determined whether or not the set determination value is appropriate. This determination is made based on whether or not the set determination value exceeds the limit based on the non-defective product error rate. If it is determined that the determination value is appropriate (S140: YES), the subsequent processing is not executed and the present inspection processing is terminated. On the other hand, when it is determined that the determination value is not appropriate (S140: NO), the process proceeds to S150.

  In S150, which is shifted to when it is determined that the determination value is not valid, an alarm is output. Specifically, the CPU and the input / output interface 47 output a signal as a notification signal to the monitor 25 and the alarm buzzer 27 to display that the determination value is not valid and to sound the buzzer.

  In continuing S160, the stop instruction | indication to the PTP packaging machine 7 is performed. Specifically, the CPU and input / output interface 47 outputs a signal as a control signal to the PTP packaging machine 7 and instructs the PTP packaging machine 7 to stop. As a result, the PTP packaging machine 7 stops operating. The reason why the PTP packaging machine 7 is stopped is that, when the judgment value exceeds the limit based on the non-defective product error rate, the non-defective product tablet 5 may be judged as a defective product. is there. And after execution of S160, this inspection process is complete | finished.

  In this embodiment, the monitor 25 shown in FIG. 3 corresponds to “display means”, the process execution device 24 corresponds to “process execution means”, and the keyboard 26 corresponds to “input means”.

  4 corresponds to the “inspection process” executed by the process execution means, the process of S120 corresponds to the “statistical process”, and the process of S130, that is, a series of processes shown in FIG. Corresponds to “display processing”, the processing in S140 corresponds to “setting value monitoring processing”, and the processing in S150 and S160 corresponds to “information output processing”.

  As described above in detail, in the present embodiment, the inspection measurement results are statistically analyzed in the inspection process shown in FIG. 4 (S120 in FIG. 4), and the frequency distribution is displayed in the display process shown in FIG. At the same time (S200 in FIG. 5), the limit line L1 based on the acceptable product tolerance limit value and the limit line L2 based on the acceptable product error rate are displayed in correspondence with this frequency distribution (see S210 and S220 in FIG. 5, FIG. 6). ). These indicate the limits of the judgment category M corresponding to the judgment value, and the judgment value is set so that the judgment category M is placed between the limit line L1 based on the acceptable product tolerance limit value and the limit line L2 based on the acceptable product error rate. Can be set. On the other hand, if the judgment category M corresponding to the preset judgment value is between both limits L1 and L2, the judgment value can be judged as appropriate. This facilitates setting of the determination value and confirmation of the validity of the determination value.

  In addition, since the background color of the field of the determination section M corresponding to the determination value is changed and displayed (see S230 in FIG. 5 and FIG. 6), even the inexperienced worker is currently determined. Since it is possible to instantly know which category the value corresponds to, the effect of facilitating confirmation of the validity of the judgment value is conspicuous.

  In the present embodiment, the acceptable product tolerance limit value, the acceptable product error / error rate, and the determination value are input via the keyboard 26. For example, in FIG. 6, as the inspection progresses, it can be considered that the non-defective product generation rate corresponding to the category of the defect rate “−3” exceeds 0.3%. In this case, the limit line L2 based on the non-defective product error rate is lowered between the division of the missing rate “−3” and the category of the missing rate “−4”. At this time, if the determination value is set to the missing rate “−3”, the determination value exceeds the limit line L2, and lacks validity. Even in such a case, the determination value can be easily set in that the determination value can be easily changed via the keyboard 26. Further, when the tablet 5 to be inspected is changed, it is usually necessary to change the acceptable product tolerance limit value and the acceptable product error rate. Even in this case, since the acceptable product tolerance limit value and the acceptable product error rate can be changed via the keyboard 26, the inspection can be performed smoothly.

  Furthermore, in the present embodiment, the non-defective product occurrence rate which is a ratio of the frequency of the non-defective product when the tablet 5 having a non-defective product tolerance limit value or more is regarded as non-defective product is displayed in correspondence with the frequency distribution (FIG. 5). (See S240 in FIG. 6, FIG. 6). As a result, compared with the case where the inspection measurement result is indicated only by the frequency, the correspondence with the non-defective product error rate indicated by the ratio can be easily obtained. As a result, it contributes to the purpose of facilitating setting of the judgment value and confirmation of the validity of the judgment value.

  Further, in the present embodiment, it is determined whether or not the determination segment M exceeds the limit line L2 based on the non-defective product error rate (S140 in FIG. 4), and an alarm output and a stop instruction to the PTP packaging machine 7 are performed (S150). , S160). As a result, the validity of the judgment value can be automatically monitored, and when the judgment value is no longer valid, a quick response can be made. Moreover, since operation | movement of the PTP packaging machine 7 is stopped, it can prevent that a non-defective product is judged as a defective product more than a non-defective product error rate.

  Although one embodiment has been described above, it goes without saying that the present invention can be implemented in various forms without departing from the spirit of the present invention. That is, it is possible to implement in the modes exemplified below, and of course, it is possible to implement in modes not exemplified below.

  (A) In the said embodiment, when the judgment value lacked validity (S140: NO in FIG. 4), it was the structure which performs a warning output and the stop instruction | indication to the PTP packaging machine 7 (S150, S160). . On the other hand, the determination value may be automatically adjusted. That is, in the frequency distribution as shown in FIG. 6, the determination division M may be automatically adjusted so as to be between the limit lines L1 and L2. In this way, not only the validity of the judgment value is confirmed, but also the setting of the judgment value when the judgment value becomes invalid is automated, reducing the burden on the operator. In this case, the process for automatically adjusting the determination value corresponds to the “determination value adjustment process”.

  (B) In the above-described embodiment, the limit of the determination category based on the acceptable product tolerance limit value and the limit of the determination category based on the non-defective product error rate are displayed as limit lines L1 and L2 (see FIG. 6). On the other hand, any display may be used as long as the display shows the limit of the determination category in the displayed frequency distribution.

  For example, as shown in FIG. 7, it can be considered that the limit of the judgment category based on the acceptable product tolerance limit value is indicated by an arrow A1, and the limit of the judgment category based on the non-defective product error rate is indicated by an arrow A2. Alternatively, similar to the determination category M shown in FIG. 6, the background color of the column corresponding to the non-defective product tolerance limit value (for example, the category of the missing rate “−5”) is changed and displayed, or the non-defective product error rate is displayed. The background color of the column of the corresponding category (for example, the category of the missing rate “−3”) may be changed and displayed. Note that the display method is not limited to such a change in background color, and any display method that can be distinguished from other sections may be used. Therefore, you may make it display the arrow which shows a division.

  (C) In the above embodiment, the background color of the field of the determination section M corresponding to the determination value is changed so that the determination section M can be distinguished from other sections (see FIG. 6). On the other hand, the determination value itself may be displayed. This is as indicated by the symbol N in FIG. Or the structure which does not display a judgment value may be sufficient. This is because if the worker knows the determination value, the determination value can be set in consideration of the limit of the determination category, and the validity of the determination value can be determined.

  (D) In the above embodiment, the tablet area value (the chipping rate) has been described for convenience, but the same applies to other inspection items. Other inspection items include all of which the judgment values are set based on statistical data, such as tablet length, tablet color (RGB luminance), and the area value, size, and position of the stamped part. It is.

  (E) In the above embodiment, the frequency distribution is displayed in a tabular form, but the frequency distribution may be displayed by a histogram (column diagram) or the like.

  (F) In the above embodiment, the acceptable product tolerance limit value and the determination value are input from the keyboard. On the other hand, the frequency distribution displayed on the monitor 25 (for example, the category corresponding to the acceptable product allowable limit value) may be input by locating with a pointing device or the like. Similarly, regarding the determination value, the displayed frequency distribution (determination category) may be input by locating with a pointing device or the like.

It is a schematic diagram which shows schematic structure of the PTP packaging machine in embodiment. (A) is a perspective view which shows a PTP sheet, (b) is a partial expanded sectional view which shows a PTP sheet. It is a block diagram which shows the electric constitution of a test | inspection apparatus. It is a flowchart which shows an inspection process. It is a flowchart which shows the display process in an inspection process. It is explanatory drawing which illustrates display content. It is explanatory drawing which illustrates the display content in another embodiment.

DESCRIPTION OF SYMBOLS 1 ... PTP sheet, 2 ... Pocket part, 3 ... Container film, 4 ... Sealing film, 5 ... Tablet, 7 ... PTP packaging machine, 21 ... Inspection apparatus, 22 ... Illumination device, 23 ... Camera, 24 ... Process execution means Processing execution device, 25 ... display device as display means, 26 ... keyboard as input means, 27 ... alarm buzzer, 41 ... image memory, 44 ... inspection result and statistical data memory, 45 ... determination memory, 46 ... Camera timing control means, 47... CPU and input / output interface.

Claims (9)

Display means for displaying information;
Based on the image data of the tablet to be inspected, measurement for inspection is performed, and inspection processing for inspecting the tablet is performed by performing inspection based on the inspection measurement result using the set determination value, and the inspection At the time of processing, with respect to a predetermined inspection item, statistical processing for statistically measuring the inspection measurement result, and the frequency distribution of the inspection measurement result based on the result of the statistical processing, using the display unit for each inspection item Processing execution means for executing display processing to be displayed;
For each inspection item, in an inspection apparatus including a non-defective product tolerance limit value, a non-defective product error rate, and an input unit for inputting the determination value,
In the display process, the processing execution means corresponds to the frequency distribution, and based on the input acceptable product tolerance limit value and acceptable product error rate, as the determination value , to satisfy these acceptable product tolerance limit value and acceptable product error rate. An inspection apparatus configured to display a limit of a determination category which is a settable frequency distribution category. The inspection apparatus according to claim 1 ,
The said process execution means is comprised so that the display based on the said determination value might be made to respond | correspond to the said frequency distribution in the said display process. The inspection apparatus according to claim 2 ,
The display based on the determination value is performed in a format that allows the determination classification to be distinguished from the frequency distribution classification. The inspection apparatus according to any one of claims 1 to 3 ,
The processing execution means corresponds to the frequency distribution in the display process, and a non-defective product occurrence rate that is a ratio of the frequency of the non-defective product when a tablet that obtains an inspection measurement result equal to or higher than the acceptable product limit value is regarded as a good product. An inspection apparatus configured to display Display means for displaying information;
Based on the image data of the tablet to be inspected, measurement for inspection is performed, and inspection processing for inspecting the tablet is performed by performing inspection based on the inspection measurement result using the set determination value, and the inspection At the time of processing, with respect to a predetermined inspection item, statistical processing for statistically measuring the inspection measurement result, and the frequency distribution of the inspection measurement result based on the result of the statistical processing, using the display unit for each inspection item Processing execution means for executing display processing to be displayed;
For each inspection item, in an inspection apparatus including a non-defective product tolerance limit value, a non-defective product error rate, and an input unit for inputting the determination value,
In the display process, the processing execution means corresponds to the frequency distribution, and based on the input acceptable product tolerance limit value and acceptable product error rate, as the determination value , to satisfy these acceptable product tolerance limit value and acceptable product error rate. The limit of the judgment category that is a settable frequency distribution category is displayed, and the display based on the judgment value is performed in a format that can distinguish the judgment category in the frequency distribution category, and the acceptable product tolerance limit An inspection apparatus configured to display a non-defective product occurrence rate, which is a ratio of the frequency of non-defective products when a tablet that has obtained an inspection measurement result equal to or greater than the value is regarded as a non-defective product. The inspection apparatus according to any one of claims 1 to 5 ,
The process execution means is configured to execute a set value monitoring process for monitoring validity of the determination value by determining whether or not the determination value exceeds a limit of the determination category based on the non-defective product error rate. Inspection apparatus characterized by being made. The inspection apparatus according to claim 6 , wherein
The process execution means executes an information output process for outputting information to the outside when it is determined in the set value monitoring process that the determination value exceeds a limit of the determination category based on the non-defective product error rate. An inspection apparatus characterized by being configured. In the inspection apparatus according to claim 6 or 7 ,
The process execution means performs a determination value adjustment process for automatically adjusting the determination value when it is determined in the set value monitoring process that the determination value exceeds the limit of the determination category based on the non-defective product error rate. An inspection device configured to perform. PTP packaging machine comprising comprises a test device according to any one of claims 1 to 8.

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