State confirmation system for manufacturing apparatus

Abstract

Provided is a condition confirmation system for a manufacturing device, which can more reliably and more easily obtain video data necessary for ascertaining the cause of a defect and the like. A confirmation system (50) is provided with: cameras (R1-R6) that acquire video data comprising a plurality of pieces of still frame image data stored in chronological order; inspection devices C1-C4 for determining whether or not the workpiece itself is qualified or not and / or the workpiece is processed; and an object data storage unit (67) that extracts prescribed object data from the video data and stores the extracted object data when the inspection devices (C1-C4) determine that the object data is not qualified. A target data storage unit 67 extracts and stores data in a prescribed range as target data, the prescribed range being located at a position traced only by the number of traced frames corresponding to the amount of conveyance of the workpiece, on the basis of still frame image data in the video data at the time of the occurrence of the trigger.

Description

Technical Field

[0001] The present invention relates to a system for confirming the occurrence of a defect related to manufacturing when the defect occurs in a manufacturing device that performs various processes on a conveyed workpiece. Background Art

[0002] In the manufacturing apparatus, there is an apparatus that manufactures various products by repeatedly performing various treatments on the workpieces that are conveyed without changing the order. In the manufacturing apparatus of this type, for example, there is a blister packaging machine that manufactures blister sheets as products in sequence by repeatedly performing various treatments on a container film as a workpiece while conveying the container film. The various treatments include, for example, a process of forming a pocket portion on the container film, a process of accommodating contents such as tablets in the pocket portion, and a process of attaching a cover film to the container film.

[0003] However, during the manufacturing of products, defects may occur in the workpiece itself or in the processing of the workpiece. For example, in a blister packaging machine, holes or dirt may exist in the container film before processing, the bag part may be formed improperly, the contents may not be properly contained in the bag part, or the cover film may not cover the container film sufficiently. When such defects occur, appropriate measures must be taken to prevent the same defects from occurring again.

[0004] Therefore, it is proposed to set up an inspection device, which has a photographing mechanism (camera, etc.) for photographing a workpiece, etc., and a determination mechanism for determining whether the workpiece itself or the processing for the workpiece is qualified or not, and the determination mechanism determines whether the workpiece itself or the processing for the workpiece is qualified or not, and at the same time, the image data used for the qualified or not determination is associated with the qualified or not determination result and stored (for example, refer to Patent Document 1, etc.). Through this inspection device, the inspection status can be grasped, and appropriate response can be taken when the inspection status is inappropriate.

[0005] In addition, it is proposed to set up a process monitoring device, which is equipped with: a shooting mechanism that shoots the workpiece itself or the execution status of the workpiece processing to obtain video data; a memory that stores the obtained video data; and an external input mechanism that is used to input a signal output from an inspection device (detection device) set on the conveying path of the workpiece as a trigger signal (for example, refer to patent document 2, etc.). In this device, when a defect related to the workpiece is detected by the inspection device and a trigger signal is input, the video data stored in the memory that is traced back to the past time of more than a set time from the time of inputting the trigger signal is saved in the form of non-overwritable video data. Therefore, it is believed that when a defect occurs with respect to the workpiece itself or the processing of the workpiece, appropriate response can be taken by using non-overwritable video data.

[0006] [Prior art literature]

[0007] [Patent Document]

[0008] Patent Document 1: Japanese Patent Application Publication No. 2006-214814

[0009] Patent Document 2: Japanese Patent Application Publication No. 2016-122319 Summary of the invention

[0010] [Problems to be solved by the invention]

[0011] However, in each of the devices described in Patent Documents 1 and 2, there is a possibility that appropriate measures cannot be taken sufficiently to prevent the occurrence of defects, or that it may be difficult to take appropriate measures.

[0012] First, the inspection device described in the above-mentioned Patent Document 1 merely stores image data for determining whether a product is acceptable or not. Therefore, although it is possible to confirm that a defect has occurred, it is sometimes impossible to grasp the cause and time of occurrence of the defect. For example, it is assumed that the manufacturing device is a blister packaging machine, and a defect such as the bag portion not containing the contents has occurred. In this case, although it is possible to confirm that the defect has occurred from the image data, it is sometimes unknown at which point in the process the defect such as the bag portion not containing the contents has occurred. Therefore, it is impossible to grasp the cause and time of occurrence of the defect, and there is a risk that appropriate measures cannot be taken to prevent the defect from occurring.

[0013] Furthermore, in the device described in Patent Document 2, video data that cannot be overwritten is video data that has been traced back to a set time or more from the time when the trigger signal was input. Therefore, the video data that cannot be overwritten may include a plurality of video data that are not related to the defect in addition to the video data required to understand the cause of the defect. Therefore, it is very difficult to find the necessary video data, and there is a risk that it will be difficult to take appropriate measures to prevent the defect from occurring.

[0014] For example, suppose the manufacturing device is a blister packaging machine, the distance between the camera mechanism and the inspection device is large, and the filling speed of the bag portion with the contents is very fast (for example, 6000 pieces / minute). In this case, the non-overwrite video data needs to be set to a longer time corresponding to the distance from the camera mechanism to the inspection device. On the other hand, since the filling speed is very fast, the required video data becomes a very small part of the entire non-overwrite video data. Therefore, it is very difficult to find the necessary video data.

[0015] Furthermore, since the video data that cannot be overwritten is determined based on time (set time), when the conveying speed of the workpiece changes, the necessary video data may not be included in the video data that cannot be overwritten. When such a situation occurs, it is impossible to take appropriate measures to prevent the occurrence of defects.

[0016] The present invention has been made in view of the above-mentioned situation, and an object of the present invention is to provide a status confirmation system for a manufacturing device, which can more reliably and easily obtain video data required for understanding the cause of defect occurrence, etc.

[0017] [Technical solution to the problem]

[0018] The following is a description of each technical solution suitable for solving the above-mentioned purpose. In addition, the specific effects are attached after the corresponding technical solution as needed.

[0019] Technical Solution 1. A manufacturing device status confirmation system, which is used for repeatedly performing the same treatment on the conveyed workpieces without changing the order along the conveying direction, and is used to confirm the occurrence of defects related to manufacturing using video, characterized in that the manufacturing device status confirmation system has:

[0020] A video shooting mechanism is arranged along the conveying path of the workpiece, and obtains video data consisting of a plurality of still frame image data stored in time sequence and related to the workpiece itself or the processing of the workpiece;

[0021] An inspection mechanism that determines whether at least one of the workpiece itself and the processing of the workpiece is acceptable or not; and

[0022] an object data storage unit, which extracts and stores specified object data from the video data when the video data is judged as unqualified by the inspection unit as a trigger,

[0023] The object data storage mechanism is constructed so as to extract and store data of a specified range as the object data from the video shooting mechanism related to the non-conformity determination performed by the inspection mechanism, based on the still frame image data in the video data when the trigger occurs, and the specified range is located at a position traced back by the number of traceback frames corresponding to the transport amount of the workpiece relative to the inspection mechanism.

[0024] According to the above technical solution 1, the object data storage unit extracts and stores the specified object data from the video data obtained by the video shooting unit. When extracting the object data, the still frame image data when the trigger occurs (when the object data is judged as unqualified) in the video data is used as a reference, and the data of the specified range from the video shooting unit related to the unqualified judgment of the inspection unit is extracted as the object data, and the specified range is located after tracing back only by the number of tracing back frames corresponding to the conveying amount of the workpiece relative to the inspection unit.

[0025] That is, according to the above-mentioned technical solution 1, object data is extracted from video data based on the transport amount of the workpiece rather than time. Therefore, as object data, video data required for understanding the cause and occurrence period of defects can be accurately extracted from video data, and the required video data can be obtained more reliably and easily. In addition, since object data is extracted based on the transport amount of the workpiece, even if the transport speed of the workpiece changes, video data required for understanding the cause of defects can be obtained more reliably.

[0026] Solution 2. A system for confirming the status of a manufacturing device according to Solution 1, characterized in that it comprises at least a main encoder capable of generating a number of revolutions and a phase which serve as a reference for the transport of the workpiece.

[0027] The video shooting mechanism is configured to start shooting of the video data in conjunction with the activation of the main encoder and to end shooting of the video data in conjunction with the deactivation of the main encoder.

[0028] A retrospective frame number deriving mechanism is provided, which can derive the aforementioned retrospective frame number based on the number of revolutions and the phase generated by the aforementioned main encoder.

[0029] The mechanism 2 is provided with at least a main encoder capable of generating a rotation number and a phase that are references for the conveyance of the workpiece. In addition, the video shooting mechanism starts shooting video data in coordination with the start of the main encoder and stops shooting video data in coordination with the stop of the main encoder. Therefore, the plurality of still frame image data constituting the video data are given a state corresponding to the rotation number and the phase of the main encoder.

[0030] Then, the retrospective frame number deriving means derives the retrospective frame number based on the number of revolutions and phase generated by the main encoder. Therefore, as described above, in the video data, a plurality of still frame image data corresponds to the number of revolutions and phase of the main encoder, and the retrospective frame number corresponding to the video data can be derived more accurately. As a result, as the object data, the video data required for understanding the cause of the defect can be obtained more reliably.

[0031] Technical Solution 3. A manufacturing device status confirmation system according to Technical Solution 2, characterized in that the video data obtained by the video shooting mechanism is stored in a predetermined ring buffer in the form of a real-time time code added to each still frame image data, the real-time time code indicating the time when the still frame image data is obtained.

[0032] A conversion mechanism is provided for converting the number of revolutions and the phase generated by the main encoder into the real-time time code using a conversion table showing the correspondence between the number of revolutions and the phase generated by the main encoder and the real-time time code,

[0033] The object data storage mechanism is constructed such that the number of revolutions and phase generated by the main encoder are converted into the real-time code using the conversion mechanism, and the object data is extracted and stored from the video data stored in the ring buffer using the real-time code.

[0034] According to the technical solution 3, the video data is stored in the ring buffer. Therefore, the memory area for storing the video data can be saved. In addition, since the video data has information related to the time when the still frame image data is obtained, it is possible to confirm when the defect occurs or at what speed the condition that causes the defect occurs. Therefore, it is possible to take more appropriate measures to prevent the defect from occurring.

[0035] Furthermore, according to the technical solution 3, the number of revolutions and phase generated by the main encoder can be converted into a real-time time code by using a conversion mechanism. And, using the real-time time code, the object data can be extracted from the video data. Therefore, as the object data, the video data required for understanding the cause of the defect can be obtained more reliably.

[0036] Technical Solution 4. A system for confirming the status of a manufacturing device according to Technical Solution 2, characterized in that the video data obtained by the video shooting mechanism is stored in a predetermined ring buffer in the form of adding a mechanical time code to each of the still frame image data, the mechanical time code indicating the number of revolutions and phase generated by the main encoder when the still frame image data was obtained,

[0037] The object data storage means is configured to extract and store the object data from the video data stored in the ring buffer using the mechanical time code.

[0038] Through the above-mentioned technical solution 4, since the video data is stored in the ring buffer, the memory area used to store the video data can be saved.

[0039] Furthermore, according to the fourth technical solution, the object data can be extracted from the video data without using a conversion mechanism, thereby reducing the processing load associated with the extraction of the object data.

[0040] Technical Solution 5. A system for confirming the status of a manufacturing device according to Technical Solution 1, characterized in that a plurality of the video shooting mechanisms are provided along the conveying direction of the workpiece.

[0041] The aforementioned inspection agency includes a structure that determines whether multiple inspection items are qualified or not.

[0042] A filming mechanism determining unit is provided, wherein the filming mechanism determining unit uses a specific table indicating the correspondence between the inspection items and the video filming mechanisms related to the inspection items to determine the video filming mechanism related to the inspection items from among the plurality of video filming mechanisms,

[0043] The object data storage means is configured to extract and store the object data from the video data obtained by the video shooting means determined by the shooting means determination means.

[0044] According to the technical solution 5, when the filming mechanism determination mechanism determines that a certain inspection item is unqualified, one or more video filming mechanisms related to the inspection item can be determined. Then, object data is extracted from one or more video data obtained by the determined one or more video filming mechanisms and stored by the object data storage mechanism. Therefore, object data can be extracted more easily.

[0045] Furthermore, when a plurality of video capturing means are related to one inspection item, a plurality of object data can be obtained from a plurality of video data obtained by these video capturing means, so that the cause of defect occurrence can be grasped more easily and more accurately.

[0046] In addition, the technical matters related to the above-mentioned technical solutions may be appropriately combined. For example, the technical matters related to the above-mentioned technical solution 2 may be combined with the technical matters related to the above-mentioned technical solution 3 or 4. In addition, for example, the technical matters related to the above-mentioned technical solution 3 or 4 may be combined with the technical matters related to the above-mentioned technical solution 5. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a three-dimensional diagram showing a PTP sheet.

[0048] Figure 2 It is a partial enlarged cross-sectional view of the PTP sheet.

[0049] Figure 3 It is a three-dimensional diagram showing a PTP film.

[0050] Figure 4 This is a schematic diagram showing the schematic structure of a PTP packaging machine, etc.

[0051] Figure 5 This is a block diagram showing a schematic configuration of a confirmation system, etc.

[0052] Figure 6 This is a block diagram showing various devices that operate based on the number of revolutions and phases generated by the main encoder.

[0053] Figure 7 This is a graph showing the relationship between the number of revolutions and phase generated by the main encoder and time.

[0054] Figure 8 This is an explanatory diagram for explaining the relationship between the phase in the main encoder and the phase in the first encoder.

[0055] Fig. 9 This is an explanatory diagram for explaining the relationship between the phase in the main encoder and the phase in the secondary encoder.

[0056] Fig.10 This is an explanatory diagram for explaining the relationship between the phase in the main encoder and the phases in the third and fourth encoders.

[0057] Fig.11 This is a block diagram showing a schematic configuration of a control device, etc.

[0058] Fig.12 This is an explanatory diagram for explaining the stored video data.

[0059] Fig.13 This is an illustration used to explain a specific table.

[0060] Fig.14 This is an explanatory diagram for explaining the conversion table, etc.

[0061] Fig.15 This is an explanatory diagram for explaining the conveyance amount of the container film from the second camera to the first inspection device.

[0062] Fig.16 This is a graph showing an example of a derivation formula for the number of traceable frames related to the first inspection device and the second camera.

[0063] Fig.17 This is an explanatory diagram for explaining the conveyance amount of the container film from the fourth camera to the second inspection device.

[0064] Fig.18 This is a graph showing an example of a derivation formula for the number of traceable frames related to the second inspection device and the fourth camera.

[0065] Fig.19 This is an explanatory diagram for explaining video data stored in another embodiment. DETAILED DESCRIPTION

[0066] Hereinafter, an embodiment will be described with reference to the accompanying drawings. First, the structure of the PTP sheet as a "product" will be described. Figure 1 , Figure 2 As shown, the PTP sheet 1 includes: a container film 3 having a plurality of pockets 2; and a cover film 4 covering the container film 3 so as to close the pockets 2.

[0067] The container film 3 in this embodiment is formed of a transparent thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride). On the other hand, the cover film 4 is formed of an opaque material (such as aluminum foil) provided with a sealant (sealant) composed of polypropylene resin or the like on the surface. Of course, the materials of the films 3 and 4 are not limited to these, and other materials may also be used.

[0068] The PTP sheet 1 is a strip-shaped PTP film 6 (see FIG. 1 ) formed by punching a strip-shaped container film 3 and a strip-shaped cover film 4. Figure 3 ) is manufactured and is formed into a roughly rectangular shape when viewed from above.

[0069] In the PTP sheet 1, a row of five pockets 2 arranged along the long side is formed in two rows in the short side. Each pocket 2 contains a tablet 5 as "content". In addition, the tablet 5 may be printed with various information.

[0070] Next, the schematic structure of the PTP packaging machine 10 for manufacturing the above-mentioned PTP sheet 1 is described. In this embodiment, the PTP packaging machine 10 is equivalent to a "manufacturing device" and a "blister packaging machine". The PTP packaging machine 10 is a device that repeatedly performs the same treatment on the container film 3 as a "workpiece" that is conveyed without changing the order along the conveying direction. In addition, in this embodiment, the PTP sheet 1 having the container film 3 is also equivalent to a "workpiece".

[0071] like Figure 4 As shown, a raw material roll of a strip-shaped container film 3 is wound into a roll shape at the most upstream side of the PTP packaging machine 10. The draw-out end side of the container film 3 wound into a roll shape is guided by a guide roller 13. The container film 3 is hung on an intermittent feed roller 14 on the downstream side of the guide roller 13. The intermittent feed roller 14 conveys the container film 3 intermittently.

[0072] A preheating device 15 and a pocket forming device 16 are provided between the guide roller 13 and the intermittent feed roller 14 along the conveying path of the container film 3. Then, while the container film 3 is preheated by the preheating device 15 and made relatively soft, a plurality of pockets 2 are formed at predetermined positions of the container film 3 by the pocket forming device 16. The pockets 2 are formed during the intervals between the conveying operations of the container film 3 by the intermittent feed roller 14.

[0073] The container film 3 fed from the intermittent feed roller 14 is hung in the order of the tension roller 18, the guide roller 19 and the film receiving roller 20. The film receiving roller 20 continuously conveys the container film 3 at a constant speed. The tension roller 18 prevents the container film 3 from being loosened due to the difference in conveying motion between the intermittent feed roller 14 and the film receiving roller 20, and always keeps the container film 3 in a tensioned state.

[0074] A filling device 22 is disposed between the guide roller 19 and the film receiving roller 20 along the conveyance path of the container film 3 .

[0075] The filling device 22 fills the tablets 5 in each pocket 2 by, for example, opening a shutter at predetermined intervals to allow the tablets 5 to fall freely.

[0076] On the other hand, the raw material roll of the cover film 4 formed into a strip shape is wound into a roll shape at the most upstream side. The drawing end of the cover film 4 wound into a roll shape is guided toward the heating roller 25 by the guide roller 24 .

[0077] The heating roller 25 can be pressed against the film receiving roller 20, so that the container film 3 and the cover film 4 are fed between the two rollers 20 and 25. Then, by passing the two films 3 and 4 between the two rollers 20 and 25 in a heated and pressed state, the cover film 4 is attached to the container film 3, and the pockets 2 are blocked by the cover film 4. Thus, a strip-shaped PTP film 6 is manufactured in which the tablets 5 are accommodated in each pocket 2. In this embodiment, the PTP film 6 corresponds to a "blister film".

[0078] The PTP film 6 fed from the film receiving roller 20 is hung in the order of the tension roller 27 and the intermittent feed roller 28. The intermittent feed roller 28 intermittently transports the PTP film 6. The tension roller 27 prevents the PTP film 6 from being loosened due to the difference in the transporting motions of the film receiving roller 20 and the intermittent feed roller 28, and always keeps the PTP film 6 in a tensioned state.

[0079] The PTP film 6 fed from the intermittent feed roller 28 is hung in the order of the tension roller 31 and the intermittent feed roller 32. The intermittent feed roller 32 intermittently conveys the PTP film 6. The tension roller 31 prevents the PTP film 6 from being loosened between the intermittent feed rollers 28 and 32.

[0080] Between the intermittent feed roller 28 and the tension roller 31, a slit forming device 33 and an imprinting device 34 are arranged along the conveying path of the PTP film 6. The slit forming device 33 forms a slit for cutting at a predetermined position of the PTP film 6. The imprinting device 34 attaches an imprint to a predetermined position (e.g., a label portion) of the PTP film 6. Figure 1 In the figures, the slits or marks for separation are omitted.

[0081] The PTP film 6 fed from the intermittent feed roller 32 is hung on the downstream side thereof in the order of the tension roller 35 and the continuous feed roller 36. A sheet punching device 37 is provided between the intermittent feed roller 32 and the tension roller 35 along the conveying path of the PTP film 6. The sheet punching device 37 has the function of punching the outer edge of the PTP film 6 in units of PTP sheets 1, that is, has the function of cutting the PTP sheet 1 from the PTP film 6.

[0082] The PTP sheet 1 obtained by the sheet punching device 37 is conveyed by the conveyor 39 and temporarily stored in the finished product hopper 40. However, when at least one of the inspection devices C1, C2, C3, and C4 described later makes a non-conforming judgment (judged as non-conforming), the PTP sheet 1 related to the non-conforming judgment is not sent to the finished product hopper 40, but is discharged separately by a non-conforming sheet discharge mechanism not shown in the figure.

[0083] A cutting device 42 is provided on the downstream side of the continuous feed roller 36. The unnecessary film portion 43, which constitutes the residual material portion (waste portion) remaining in a strip shape after being punched by the sheet punching device 37, is guided to the cutting device 42 after being guided by the tension roller 35 and the continuous feed roller 36. The cutting device 42 cuts the unnecessary film portion 43 into a predetermined size. The cut unnecessary film portion 43 (waste) is stored in a waste hopper 44 and then disposed of.

[0084] Next, the first motor M1, the second motor M2, the third motor M3, the fourth motor M4 and the fifth motor M5 for operating the intermittent feed roller 14, the film receiving roller 20, the intermittent feed rollers 28 and 32 and the conveyor 39 will be described. In addition, these are sometimes referred to as "motors M1 to M5" below.

[0085] The first motor M1 is used to intermittently convey the container film 3 to be processed by the preheating device 15 and the bag forming device 16 by operating the intermittent feed roller 14. In the present embodiment, the first motor M1 is operated when the number of revolutions generated by the main encoder EM described later is an even number (or an odd number) and at a timing when the phase (rotation angle) generated by the main encoder EM reaches a predetermined value (angle) α). That is, the first motor M1 is operated only once every time the number of revolutions of the main encoder EM increases by 2. The container film 3 is conveyed by a predetermined length (a length of two PTP sheets in the present embodiment) by operating the first motor M1 once.

[0086] The second motor M2 is used to move the film receiving roller 20 to transfer the container film 3 to which the cover film 4 is attached by the two rollers 20 and 25.

[0087] Continuous conveyance at a constant speed In this embodiment, the number of revolutions of the main encoder EM increases by 1, and the second motor M2 operates once so that the container film 3 is conveyed by a predetermined length (in this embodiment, one PTP sheet 1).

[0088] The third motor M3 and the fourth motor M4 are used to intermittently convey the container film 3 to be processed by the slit forming device 33, the marking device 34 and the sheet punching device 37. In the present embodiment, each time the phase of the main encoder EM reaches a predetermined value (angle α), that is, each time the number of revolutions of the main encoder EM increases by 1, the two motors M3 and M4 are operated once so that the container film 3 is conveyed by a predetermined length (in the present embodiment, the length of one PTP sheet 1).

[0089] The fifth motor M5 is used to intermittently transport the PTP sheet 1 by operating the conveyor 39. In the present embodiment, the fifth motor M5 is operated once every time the phase of the main encoder EM reaches a predetermined value (angle α), that is, every time the number of revolutions of the main encoder EM increases by 1, so that the PTP sheet 1 is intermittently transported a predetermined distance. In addition, the fifth motor M5 may also be a motor capable of continuously transporting the PTP sheet 1.

[0090] In addition, for the PTP packaging machine 10, as Figure 5 As shown, a status confirmation system 50 (hereinafter referred to as "confirmation system 50") for a manufacturing device is used. The confirmation system 50 is used to confirm the occurrence of defects related to the manufacture of the PTP sheet 1 based on the image. The confirmation system 50 has a function of determining whether the container film 3 itself and the processing of the container film 3 are acceptable, a function of obtaining video data about the container film 3 and the execution status of the processing, and a function of extracting and storing only necessary data from the video data. The confirmation system 50 includes a main motor MM, a main encoder EM, and a control device 60.

[0091] The main motor MM is composed of a servo motor that rotates at a certain speed, etc., and has a predetermined rotation drive unit (for example, a motor shaft). The start and stop of the main motor MM are controlled by the control device 60. In the present embodiment, the operation speed of the main motor MM (rotation drive unit) gradually increases when the PTP packaging machine 10 starts to operate, becomes constant after a certain time has passed since the start of the operation of the PTP packaging machine 10, and gradually decreases when the PTP packaging machine 10 stops operating, and finally becomes 0.

[0092] The main encoder EM generates the number of revolutions and phases that serve as a reference for the motion control of each device in the PTP packaging machine 10. In the present embodiment, the main encoder EM reads the number of revolutions and phases related to the aforementioned rotation drive portion of the main motor MM and generates the read number of revolutions and phases. The generated number of revolutions and phases are used as a reference for the motion timing of the motors M1 to M5 (i.e., a reference for the transport timing of the container film 3), a reference for the operation timing of the inspection performed by the inspection devices C1, C2, C3, and C4 described later, and a reference for the operation timing of the shooting performed by the cameras R1, R2, R3, R4, R5, and R6 described later. That is, the main encoder EM generates the number of revolutions and phases that serve as a reference for the motion control of the motors M1 to M5, the inspection devices C1, C2, C3, and C4, and the cameras R1, R2, R3, R4, R5, and R6 (refer to Figure 6 ).

[0093] The number of revolutions and the phase generated by the main encoder EM are input to the control device 60. In the present embodiment, as described above, the main motor MM is operated, and the phase and the number of revolutions generated by the main encoder EM gradually increase when the PTP packaging machine 10 starts to operate, increase at a constant speed after a certain time has passed since the start of the operation of the PTP packaging machine 10, and gradually decrease when the PTP packaging machine 10 stops operating (see Figure 7 ).

[0094] Next, before explaining the control device 60, other devices included in the confirmation system 50 will be explained.

[0095] The confirmation system 50 includes a first inspection device C1, a second inspection device C2, a third inspection device C3, and a fourth inspection device C4 along the conveying path of the container film 3 or the PTP sheet 1. Hereinafter, these are sometimes referred to as "inspection devices C1 to C4". In this embodiment, the inspection devices C1 to C4 are respectively equivalent to "inspection means".

[0096] Each of the inspection devices C1 to C4 includes an irradiation device, an imaging device, and a determination device (not shown in the figure). The irradiation device irradiates the container film 3, the tablet 5, the PTP sheet 1, etc. with a predetermined light. The imaging device images the container film 3, etc. irradiated with light by the irradiation device. The determination device determines whether at least one of the container film 3 itself and the processing on the container film 3 is acceptable or not based on the image data obtained by the imaging device.

[0097] The first inspection device C1 is provided downstream of the bag forming device 16 and upstream of the filling device 22, corresponding to the container film 3 being continuously conveyed (see Figure 4 ). After the bag 2 is formed and before the bag 2 is filled with the tablet 5, the first inspection device C1 inspects the container film 3 for scratches (such as pinholes, etc.) or dirt and the bag 2 for defective forming. By inspecting the presence of scratches or dirt, it is possible to determine whether the container film 3 itself is qualified. In addition, by inspecting the presence of defective forming in the bag 2, it is possible to determine whether the container film 3 has been properly treated by the preheating device 15 or the bag forming device 16.

[0098] The second inspection device C2 is disposed downstream of the filling device 22 and upstream of the film receiving roller 20 (see Figure 4 ). The second inspection device C2 performs inspections for the inspection items of "missing tablets" and "standing tablets". "Missing tablets" means that the bag 2 does not contain tablets 5. "Standing tablets" means that the tablets 5 filled in the bag 2 are in a standing state. By performing the inspections for "missing tablets" or "standing tablets", it can be determined whether the bag 2 has been properly filled with tablets 5 by the filling device 22.

[0099] The third inspection device C3 is provided between the film receiving roller 20 and the tension roller 27 (see Figure 4 ). The third inspection device C3 inspects the presence of "missing pieces" and "failed sealing". "Failed sealing" means that the cover film 4 is not sufficiently attached to the container film 3. By inspecting "failed sealing", it can be determined whether the process of attaching the cover film 4 to the container film 3 by the two rollers 20 and 25 is appropriate.

[0100] The fourth inspection device C4 is provided corresponding to the PTP sheet 1 conveyed by the conveyor 39 (see Figure 4 ). The fourth inspection device C4 inspects the inspection item of "punching failure". "Punching failure" means that a defective portion is generated on the punched PTP sheet 1. By inspecting "punching failure", it can be determined whether the punching process of the PTP film 6 by the sheet punching device 37 is appropriate.

[0101] The pass / fail determination results of the inspection devices C1 to C4 are sent to the control device 60. As described above, the operation timing of the inspection by the inspection devices C1 to C4 is controlled by the rotation speed and phase generated by the main encoder EM.

[0102] Furthermore, the confirmation system 50 includes a first encoder E1, a second encoder E2, a third encoder E3, a fourth encoder E4, and a fifth encoder E5. Hereinafter, these may be referred to as "encoders E1 to E5".

[0103] The first encoder E1 is used to obtain the number of revolutions and phases related to the first motor M1. In the present embodiment, the first encoder E1 is set so that the phase advances by 360° and the number of revolutions increases by 1 (refer to the first encoder E1) every time the phase of the main encoder EM advances by 720° (the number of revolutions of the main encoder EM increases by 2) and the first motor M1 is operated once and the container film 3 is intermittently conveyed by only a predetermined length (the length of two PTP sheets 1). Figure 8 ).

[0104] The second encoder E2 is used to obtain the number of revolutions and phases related to the second motor M2. In this embodiment, the second encoder E2 is set so that each time the phase of the main encoder EM advances 360°, the second motor M2 is continuously operated, and the container film 3 is conveyed by only a specified length (the length of one PTP sheet 1), the phase obtained advances 360°, and the number of revolutions increases by only 1 (refer to Fig. 9 ). Therefore, the number of revolutions and the phase obtained by the second encoder E2 are proportional to the amount of transport of the container film 3 by the second motor M2.

[0105] The third encoder E3 is used to obtain the number of revolutions and phase related to the third motor M3. The fourth encoder E4 is used to obtain the number of revolutions and phase related to the fourth motor M4. The two encoders E3 and E4 are set so that each time the phase of the main encoder EM advances 360°, each motor M3 and M4 operates once, and the container film 3 is conveyed by only a specified length (the length of one PTP sheet 1), the phase obtained advances 360°, and the number of revolutions increases by only 1 (refer to Fig.10 ).

[0106] The fifth encoder E5 is used to obtain the number of revolutions and phase related to the fifth motor M5. The fifth encoder E5 is set so that when the fifth motor M5 is operated once and the PTP sheet 1 is transported a predetermined distance, the obtained phase advances 360 degrees and the number of revolutions increases by 1.

[0107] Furthermore, the confirmation system 50 includes a first camera R1, a second camera R2, a third camera R3, a fourth camera R4, a fifth camera R5, and a sixth camera R6 along the conveying path of the container film 3. Hereinafter, these cameras R1 to R6 are sometimes referred to as "cameras R1 to R6". In the present embodiment, the cameras R1 to R6 are provided separately from the aforementioned imaging devices of the inspection devices C1 to C4, and each corresponds to a "video imaging mechanism".

[0108] The cameras R1 to R6 are used to obtain video data by photographing the container film 3 before processing, the processing status of the container film 3, the container film 3 whose pass / fail status and posture may change due to the processing, the tablet 5, etc. The video data is related to the container film 3 itself or the processing of the container film 3 and is composed of a plurality of still frame image data stored in time sequence. The video data obtained by the cameras R1 to R6 is input to the control device 60. In this embodiment, one second of video data is composed of 60 still frame image data.

[0109] The cameras R1 to R6 start capturing video data in conjunction with the activation of the main encoder EM and stop capturing video data in conjunction with the deactivation of the main encoder EM. Thus, a plurality of still frame image data constituting the video data are given a state corresponding to the rotation speed and phase of the main encoder EM.

[0110] The first camera R1 is arranged upstream of the preheating device 15 (see Figure 4 The first camera R1 captures the container film 3 itself unwound from the raw material roll. The video data obtained by the first camera R1 is used to check whether there are scratches or dirt on the container film 3 before processing the container film 3.

[0111] The second camera R2 is installed between the preheating device 15 and the bag forming device 16 (refer to Figure 4 The second camera R2 is a thermal camera, and takes an image of the container film 3 that has been preheated by the preheating device 15. The video data obtained by the second camera R2 represents the temperature distribution in the container film 3, and is used to confirm whether the preheating of the container film 3 is appropriate.

[0112] The third camera R3 is disposed just downstream of the pocket forming device 16 (see Figure 4 The third camera R3 captures the container film 3 that is being subjected to the bag portion 2 forming process by the bag portion forming device 16. The video data obtained by the third camera R3 is used to confirm whether the process of forming the bag portion 2 on the container film 3 is appropriate.

[0113] The fourth camera R4 is provided corresponding to the position where the tablet 5 is filled by the filling device 22 (see Figure 4The fourth camera R4 captures the scene of filling the bag 2 with tablets 5, the filled tablets 5, etc. The video data obtained by the fourth camera R4 is used to confirm whether the filling process of the bag 2 with tablets 5 is appropriate.

[0114] The fifth camera R5 is set corresponding to the position where the cover film 4 is attached to the container film 3 (see Figure 4 The fifth camera R5 captures a scene in which the cover film 4 is attached to the container film 3. The video data obtained by the fifth camera R5 is used to confirm whether the process of attaching the cover film 4 to the container film 3 is appropriate.

[0115] The sixth camera R6 is provided corresponding to the position where the sheet punching device 37 punches the PTP film 6 (see Figure 4 ). The sixth camera R6 captures a scene of punching the PTP sheet 1 from the PTP film 6. The video data obtained by the sixth camera R6 is used to confirm whether the punching process of the PTP film 6 is appropriate.

[0116] Next, the control device 60 will be described. The control device 60 is responsible for the operation control of each device in the PTP packaging machine 10 and the confirmation system 50. The control device 60 includes a CPU as a computing mechanism, a ROM storing various programs, a RAM temporarily storing various data such as computing data or input and output data, a storage medium for long-term storage of various data, an input device for inputting information (such as a keyboard, etc.), and a display device for displaying various information (such as a liquid crystal display, etc.).

[0117] like Figure 5 As shown, the control device 60 includes a motor control unit 61 , a camera control unit 62 , and an inspection device control unit 63 .

[0118] The motor control unit 61 controls the operation of each of the motors M1 to M5 based on the number of revolutions and the phase generated by the main encoder EM. As a result, each of the motors M1 to M5 operates as described above.

[0119] The camera controller 62 controls the operation of each camera R1 to R6 based on the rotation speed and phase generated by the main encoder EM. Thus, as described above, each camera R1 to R6 starts capturing video data in conjunction with the activation of the main encoder EM and stops capturing video data in conjunction with the deactivation of the main encoder EM.

[0120] The inspection device control unit 63 controls the operation timing of the inspection by each inspection device C1 to C4 based on the rotation speed and phase generated by the main encoder EM. In this embodiment, the inspection by each inspection device C1 to C4 is executed every time the phase generated by the main encoder EM reaches a predetermined value.

[0121] Furthermore, if Fig.11 As shown in FIG. 1 , the control device 60 includes a ring buffer 64, a video storage unit 65, a camera determination unit 66, an object data storage unit 67, a conversion unit 68, and a retrospective frame number derivation unit 69. In the present embodiment, the camera determination unit 66 constitutes a "photographing unit determination unit", and similarly, the object data storage unit 67 constitutes a "object data storage unit", the conversion unit 68 constitutes a "conversion unit", and the retrospective frame number derivation unit 69 constitutes a "tracing frame number derivation unit".

[0122] The ring buffer 64 is composed of the above-mentioned storage medium, and a certain information storage area in the storage medium is treated as a ring. The ring buffer 64 is configured to return to the head information storage area to overwrite the data after all the information storage areas have stored data.

[0123] The video storage unit 65 stores the video data obtained by the cameras R1 to R6. More specifically, the video storage unit 65 stores the video data obtained by the cameras R1 to R6 in the ring buffer 64 (see Fig.12 ). In this embodiment, the real-time time code is composed of time and frame number. Fig.12 In the embodiment, the data name consisting of time and frame number is recorded as still frame image data. The frame numbers 0 to 59 in this embodiment are numerical values ​​indicating the order of obtaining 60 still frame image data constituting 1 second of video data. The time is obtained using the clock function of the control device 60.

[0124] The camera determination unit 66 determines the inspection item related to the inspection item determined as unqualified by the inspection devices C1 to C4 from the plurality of cameras R1 to R6. When making this determination, the camera determination unit 66 uses a specific table (see FIG. 1 ) obtained in advance that indicates the correspondence between the inspection item and the cameras R1 to R6 related to the inspection item. Fig.13 ).

[0125] For example, in terms of the reason why the first inspection device C1 makes a failure judgment in the inspection item of whether there is a failure in forming the bag portion 2, it is considered that some defects occurred in the preheating process of the container film 3 and the forming process of the bag portion 2. Therefore, the inspection item of whether there is a failure in forming is related to the second camera R2 that photographs the preheated container film 3 and the third camera R3 that photographs the container film 3 after the bag portion 2 is formed. Therefore, in the specific table, it is indicated that the second camera R2 and the third camera R3 correspond to the inspection item of whether there is a failure in forming the bag portion 2.

[0126] In addition, for example, in terms of the reason why the second inspection device C2 makes a failure judgment in the inspection item of "missing tablets" or "standing tablets", it can be considered that a defect occurred when the tablets 5 were filled by the filling device 22 or when the container film 3 was conveyed at a position downstream of the filling device 22. Therefore, the inspection item of "missing tablets" or "standing tablets" is related to the fourth camera R4 that captures the scene of the bag 2 being filled with tablets 5. Therefore, in the specific table, it is indicated that the fourth camera R4 corresponds to the inspection item of "missing tablets" or "standing tablets". By checking the video data obtained by the fourth camera R4, it can be understood that a defect occurred at any time point when the tablets 5 were filled by the filling device 22 or when the container film 3 was conveyed at a position downstream of the filling device 22.

[0127] The object data storage unit 67 extracts and stores predetermined object data from the video data stored in the ring buffer 64 when the inspection devices C1 to C4 determine that the defect is unqualified. The object data is considered to be data necessary for determining the cause and time of occurrence of the defect. In the present embodiment, the object data is video data composed of a plurality of still frame image data, but it may be still image data composed of a single still frame image data.

[0128] When extracting and storing the target data, the target data storage unit 67 extracts and stores the data in the "predetermined range" located at the position traced back by the number of traced frames based on the still frame image data when the trigger occurs in the video data as the target data.

[0129] Here, the so-called retrospective frame number refers to the frame number that indicates to what extent the video data at the current time point should be retrospectively traced in order to extract the data (object data) related to the failure determination from the video data obtained by the cameras R1 to R6 related to the failure determination when the inspection devices C1 to C4 have made a failure determination. The retrospective frame number corresponds to the amount of the container film 3 (including the PTP sheet 1) transported from the cameras R1 to R6 related to the failure determination of the inspection devices C1 to C4 to the inspection devices C1 to C1 that have made the failure determination. The retrospective frame number is derived by the retrospective frame number deriving unit 69. The method of deriving the retrospective frame number will be described later.

[0130] In addition, the "prescribed range" is a range corresponding to the time length of the target data, and can be changed appropriately. In the present embodiment, the prescribed range is set to the range between the position traced back by the number of traced frames and the position traced back by only one PTP sheet (i.e., the amount of one rotation of the main encoder EM) from the position (refer to Fig.14 ).

[0131] Furthermore, the object data storage unit 67 extracts and stores one or more object data from one or more video data obtained by the cameras R1 to R6 determined by the camera determination unit 66. Therefore, when the bag 2 is judged as unqualified in the inspection item such as whether there is a defective molding, one object data is extracted and stored from the video data obtained by the second camera R2, and another object data is extracted and stored from the video data obtained by the third camera R3.

[0132] Furthermore, when extracting the object data from the video data stored in the ring buffer 64, the object data storage unit 67 converts the number of revolutions and the phase of the main encoder EM corresponding to the aforementioned specified range into a real time code through the conversion mechanism 68.

[0133] Here, the conversion unit 68 uses a conversion table (see Fig.14 ), the number of revolutions and phase of the main encoder EM corresponding to the aforementioned specified range are converted into a real-time time code. In addition, the conversion table can be obtained, for example, by obtaining the correspondence between the number of revolutions and phase generated by the main encoder EM and the real-time time code during the operation of the PTP packaging machine 10.

[0134] Then, the object data storage unit 67 uses the real time code obtained by the conversion process to extract the object data from the video data stored in the ring buffer 64. More specifically, the object data storage unit 67 extracts, from the video data, a plurality of still frame image data to which the real time code obtained by the conversion process is added as the object data.

[0135] Furthermore, the object data storage unit 67 associates the extracted object data with the inspection results performed by the inspection devices C1 to C4, which triggered the extraction of the object data, and stores them. For example, when the first inspection device C1 makes a failure determination in the inspection item such as whether there is a molding failure in the bag part 2, the inspection result is associated with the object data and stored. In addition, the image data used for the pass / fail determination (inspection image data) may be associated with the object data and stored.

[0136] Furthermore, the object data is stored in an area of ​​the storage medium that is different from the area constituting the ring buffer 64. Therefore, unlike the data stored in the ring buffer 64, the object data is not deleted after a certain period of time has passed.

[0137] The retrospective frame number derivation unit 69 derives the retrospective frame number based on the rotation speed and phase generated by the main encoder EM and the retrospective frame number derivation formula obtained in advance. The retrospective frame number derivation formula may represent a constant value or may vary depending on the rotation speed or phase of the main encoder EM. The retrospective frame number derivation formula is calculated according to the above-mentioned specific table (refer to Fig.13 ) is set to each combination of the corresponding inspection devices C1 to C4 and cameras R1 to R6. Therefore, as the tracing frame number derivation formula, there are the formula related to the first inspection device C1 and the first camera R1, the formula related to the first inspection device C1 and the second camera R2, and so on.

[0138] For example, the tracing frame number derivation formula related to the first inspection device C1 and the second camera R2 can be obtained as follows. That is, the container film 3 inspected by the first inspection device C1 is conveyed by a predetermined amount (one PTP sheet 1) every time the main encoder EM rotates, and on the other hand, the container film 3 photographed by the second camera R2 is intermittently conveyed by two PTP sheets 1 at the time point when the phase of the main encoder EM becomes a predetermined value. Therefore, the conveying amount L1 of the container film 3 from the second camera R2 to the first inspection device C1 becomes an amount that changes according to the number of revolutions and the phase of the main encoder EM (refer to Fig.15 ).

[0139] Therefore, it is possible to obtain an expression representing the transport amount L1 that changes in accordance with the number of revolutions and phase of the main encoder EM. On this basis, the expression (transport amount L1) is divided by the transport amount of the container film 3 transported per rotation of the main encoder EM (one PTP sheet 1). Thus, it is possible to obtain an expression for deriving the number of traceable frames related to the first inspection device C1 and the second camera R2 that changes in accordance with the number of revolutions or phase of the main encoder EM (refer to Fig.16 ).

[0140] Furthermore, for example, the tracing frame number derivation formula related to the second inspection device C2 and the fourth camera R4 can be obtained as follows. That is, the container film 3 inspected by the second inspection device C2 and the container film 3 photographed by the fourth camera R4 are continuously conveyed at a constant speed. Therefore, the conveying amount L2 of the container film 3 from the fourth camera R4 to the second inspection device C2 is a constant value (refer to Fig.17 ).

[0141] Therefore, by dividing the transport amount L2 by the transport amount of the container film 3 transported per rotation of the main encoder EM (one PTP sheet), the tracing frame number derivation formula related to the second inspection device C2 and the fourth camera R4 can be obtained (refer to Fig.18 , which is a certain value at this time).

[0142] Then, the retrospective frame number deriving unit 69 derives the retrospective frame number according to the retrospective frame number deriving formula using the rotation number and phase of the main encoder EM at the time point when the failure is determined. For example, when deriving the retrospective frame number related to the first inspection device C1 and the second camera R2, the retrospective frame number related to the first inspection device C1 and the second camera R2 can be obtained by substituting the rotation number or phase of the main encoder EM when the failure determination is made into the retrospective frame number deriving formula related to the first inspection device C1 and the second camera R2.

[0143] In addition, the retrospective frame number deriving unit 69 may derive the retrospective frame number using a previously acquired derivation table. The derivation table indicates the correspondence between the retrospective frame number and the rotation number or phase of the main encoder EM, and the retrospective frame number corresponds to the transport amount between the inspection devices C1 to C4 and the cameras R1 to R6 assigned correspondingly in the above-mentioned specific table. The retrospective frame number deriving unit 69 may derive the retrospective frame number based on the derivation table and the rotation number or phase of the main encoder EM when it is determined to be unqualified.

[0144] The verification system 50 configured as described above operates as follows. That is, when the inspection devices C1 to C4 make a failure determination, the camera determination unit 66 determines the cameras R1 to R6 related to the inspection items determined to be failed. For example, when the first inspection device C1 determines that the inspection item of the presence or absence of scratches or dirt is failed, the camera determination unit 66 determines the cameras R1, R2, and R3.

[0145] Furthermore, the retrospective frame number is derived by the retrospective frame number deriving unit 69. Thus, the aforementioned predetermined range in the video data is established. Fig.14 (1) in the above. For example, when the camera identification unit 66 identifies the cameras R1, R2, and R3, a different retrospective frame number is derived for each camera R1, R2, and R3. Then, by deriving the retrospective frame number, the aforementioned specified range is determined for each video data obtained by the cameras R1, R2, and R3.

[0146] Furthermore, the number of revolutions and phase of the main encoder EM corresponding to the above-mentioned specified range are converted into a real-time time code by the conversion unit 68. Fig.14 For example, when the camera identification unit 66 identifies the cameras R1, R2, and R3, three types of real-time time codes are derived corresponding to the three types of the aforementioned specified ranges.

[0147] On this basis, from the video data stored in the ring buffer 64 by the object data storage unit 67, a plurality of still frame image data with real time codes that match the real time codes obtained by the conversion processing by the conversion unit 68 are extracted as object data. Fig.14For example, when the camera identification unit 66 identifies the cameras R1, R2, and R3, a total of three object data are extracted from a total of three video data obtained by the first cameras R1, R2, and R3.

[0148] Finally, the extracted object data is stored in association with the inspection results, etc., by the object data storage unit 67. By checking the stored object data, etc., the operator can know the cause and time of the defect, and can take more appropriate measures to prevent the defect from recurring.

[0149] As described in detail above, according to the present embodiment, based on the still frame image data when a trigger occurs (when a failure is determined) in the video data, data in a specified range located at a position traced back by only the number of traced frames is extracted as target data from the cameras R1 to R6 related to the failure determination performed by the inspection devices C1 to C4. The number of traced frames corresponds to the transport amount of the container film 3 (including the PTP sheet 1) to the inspection devices C1 to C4.

[0150] That is, the object data is extracted from the video data not based on time but based on the conveying amount of the container film 3. Therefore, the video data required for understanding the cause and occurrence time of the defect can be accurately extracted from the video data as the object data, and the required video data can be obtained more reliably and easily. In addition, since the object data is extracted based on the conveying amount of the container film 3, even in the case where the conveying speed of the container film 3 changes, the video data required for understanding the cause of the defect can be obtained more reliably.

[0151] Furthermore, the retrospective frame number derivation unit 69 derives the retrospective frame number based on the number of revolutions and the phase generated by the main encoder EM. Therefore, in the video data, a plurality of still frame image data are matched with the number of revolutions and the phase of the main encoder, and the retrospective frame number corresponding to the video data can be derived more accurately. As a result, as the object data, the video data required for understanding the cause of the defect can be obtained more reliably.

[0152] Furthermore, the video data is stored in the ring buffer 64. Therefore, the memory area for storing the video data can be saved. In addition, since the video data has information related to the time when the still frame image data is obtained, it is possible to confirm when the defect occurred or at what speed the defect occurred. Therefore, it is possible to take more appropriate measures to prevent the defect from occurring.

[0153] Furthermore, by using the conversion unit 68, the number of revolutions and the phase generated by the main encoder EM can be converted into a real-time code. Then, the real-time code can be used to extract the target data from the video data. Therefore, as the target data, the video data required for understanding the cause of the defect can be obtained more reliably.

[0154] Furthermore, when a certain inspection item is judged as unqualified by the camera identification unit 66, one or more cameras R1 to R6 related to the inspection item can be identified. Then, object data is extracted from one or more video data obtained by the identified one or more cameras R1 to R6 and stored by the object data storage unit 67. Therefore, object data can be extracted more easily.

[0155] Furthermore, when a plurality of cameras R1 to R6 are related to one inspection item, a plurality of object data can be obtained from a plurality of video data obtained by these cameras R1 to R6. Therefore, the cause of defect occurrence can be grasped more easily and more accurately.

[0156] Furthermore, the present invention is not limited to the contents of the above-mentioned embodiments, and may be implemented as follows, for example. Of course, other application examples and modification examples not shown below are also possible.

[0157] (a) In the above embodiment, the video data obtained by the cameras R1 to R6 are stored in the ring buffer 64 in the form of adding a real time code indicating the time when the still frame image data is obtained to each still frame image data. Fig.19 As shown, the video data obtained by the cameras R1 to R6 are stored in the ring buffer 64 in the form of a mechanical time code indicating the number of revolutions and phase generated by the main encoder EM when the still frame image data was obtained, added to each still frame image data. In addition, the object data storage unit 67 may extract the object data from the video data stored in the ring buffer 64 using the mechanical time code and store it.

[0158] In this case, since the video data is stored in the ring buffer 64, the memory area for storing the video data can be saved.

[0159] Furthermore, since the object data can be extracted from the video data without using the conversion section 68, it is possible to reduce the processing load associated with the extraction of the object data.

[0160] In addition, mechanical time code can also have frame numbers.

[0161] (b) In the above embodiment, the main encoder EM is configured to read the number of revolutions and phases related to the main motor MM and generate the read number of revolutions and phases. In contrast, the main encoder EM may also be configured to read the number of revolutions and phases related to the second motor driving the film receiving roller 20 and generate the read number of revolutions and phases. Therefore, the second encoder E2 may also serve as the main encoder EM.

[0162] Furthermore, the main encoder EM may also be virtually implemented in software.

[0163] (c) The conveying mode of the container film 3 in the above embodiment is an example and can be changed as appropriate. Therefore, for example, the container film 3 can be conveyed by a length corresponding to a plurality of PTP sheets 1 by performing one operation of the two motors M3 and M4.

[0164] Furthermore, the container film 3 may be conveyed in a predetermined form without using the number of revolutions and the phase generated by the main encoder EM.

[0165] (d) In the above embodiment, the confirmation system 50 includes four inspection devices C1 to C4, but the number of inspection devices may be changed as appropriate.

[0166] In addition, the inspection items may be changed as appropriate. For example, the second inspection device C2 may inspect the tablet 5 for an inspection item such as whether or not there are any damages.

[0167] (e) In the above embodiment, the tablet 5 is cited as the "content", but the content is not limited to the tablet.

[0168] Furthermore, the type and shape of tablets are not limited to the above-mentioned embodiments. For example, tablets are not only medicines, but also include tablets for diet. In addition, tablets include not only plain tablets, sugar-coated tablets, film-coated tablets, enteric-coated tablets, and gelatin-coated tablets, but also various capsule tablets such as hard capsules or soft capsules.

[0169] The shape of the tablet is not limited to a circular shape in plan view, and may be, for example, a polygonal shape in plan view, an elliptical shape in plan view, an oblong shape in plan view, or the like.

[0170] (f) The structure of the manufactured PTP sheet is not limited to the above-mentioned embodiment. For example, the arrangement and number of the pockets 2 in the PTP sheet 1 are not limited in any way in the above-mentioned embodiment.

[0171] In addition, in the above-mentioned embodiment, the PTP film 6 is configured such that the number of pockets 2 corresponding to one sheet is arranged along the width direction thereof, but the present invention is not limited thereto, and for example, the number of pockets 2 corresponding to a plurality of sheets may be arranged along the width direction thereof. Of course, the configurations of the preheating device 15 and the pocket forming device 16 may be changed in accordance with the configuration of the PTP film 6. In addition, the conveying amount of the container film 3 to be processed by the preheating device 15 and the like may be appropriately changed in accordance with the configuration of the preheating device 15 and the like.

[0172] Furthermore, in the above-mentioned embodiment, the PTP sheet 1 is exemplified as the blister sheet, but the technical idea of ​​the present invention can also be applied to blister sheets other than the PTP sheet 1 .

[0173] (g) In the above embodiment, the confirmation system 50 is applied to the PTP packaging machine 10, but the manufacturing device to which the confirmation system 50 can be applied is not limited to the PTP packaging machine 10 as long as it repeatedly performs the same processing on the conveyed workpieces without changing the order along the conveying direction.

[0174] Therefore, for example, the confirmation system 50 can also be applied to a sealed package manufacturing device (for example, the device described in Japanese Patent Publication No. 2021-181330) that repeatedly performs a process of accommodating contents and a process of installing a cover film on a container (tray) as a "workpiece". In addition, the confirmation system 50 can also be applied to a substrate manufacturing device (for example, the substrate manufacturing system described in Japanese Patent Publication No. 2017-15717) that repeatedly performs a process of applying solder, a process of installing electronic components, and a process of heating and melting solder (reflow processing) on ​​a base substrate as a "workpiece".

[0175] [Explanation of symbols]

[0176] 1…PTP sheet (workpiece), 3…container film (workpiece), 10…PTP packaging machine (manufacturing device), 50…condition confirmation system of manufacturing device, 64…ring buffer, 66…camera determination unit (photographing mechanism determination unit), 67…object data storage unit (object data storage unit), 68…conversion unit (conversion unit), 69…traceability frame number derivation unit (traceability frame number derivation unit), C1~C4…inspection device (inspection unit), EM…main encoder, R1~R6…camera (video photographing unit).

Claims

1. A system for confirming the status of a manufacturing device, which is used for a manufacturing device that repeatedly applies the same treatment to a workpiece being conveyed without changing the order along the conveying direction, and is used for confirming the occurrence of defects related to manufacturing using video, characterized in that: The manufacturing device status confirmation system comprises: A video shooting mechanism is arranged along the conveying path of the workpiece, and obtains video data consisting of a plurality of still frame image data stored in time sequence and related to the workpiece itself or the processing of the workpiece; An inspection mechanism that determines whether at least one of the workpiece itself and a process performed on the workpiece is acceptable; and an object data storage unit, which extracts and stores specified object data from the video data when the video data is judged as unqualified by the inspection unit as a trigger, The object data storage mechanism is configured to extract and store data of a specified range as the object data from the video shooting mechanism related to the non-conformity determination performed by the inspection mechanism, based on the still frame image data in the video data when the trigger occurs, and the specified range is located at a position traced back by the number of traceback frames corresponding to the transport amount of the workpiece relative to the inspection mechanism.

2. The manufacturing device status confirmation system according to claim 1, characterized in that: It has at least a main encoder capable of generating a reference number of revolutions and a phase for conveying the workpiece. The video shooting mechanism is configured to start shooting of the video data in conjunction with the activation of the main encoder and to end shooting of the video data in conjunction with the deactivation of the main encoder. A retrospective frame number deriving mechanism is provided, which can derive the aforementioned retrospective frame number based on the number of revolutions and the phase generated by the aforementioned main encoder.

3. The manufacturing device status confirmation system according to claim 2, characterized in that: The video data obtained by the video shooting mechanism is stored in a predetermined ring buffer in the form of adding a real-time time code to each still-frame image data, wherein the real-time time code indicates the time when the still-frame image data is obtained. A conversion mechanism is provided for converting the number of revolutions and the phase generated by the main encoder into the real-time time code using a conversion table showing the correspondence between the number of revolutions and the phase generated by the main encoder and the real-time time code, The object data storage mechanism is constructed such that the number of revolutions and phase generated by the main encoder are converted into the real-time code using the conversion mechanism, and the object data is extracted and stored from the video data stored in the ring buffer using the real-time code.

4. The manufacturing device status confirmation system according to claim 2, characterized in that: The video data obtained by the video shooting mechanism is stored in a predetermined ring buffer in the form of adding a mechanical time code to each still frame image data, the mechanical time code indicating the number of revolutions and phase generated by the main encoder when the still frame image data is obtained. The object data storage means is configured to extract and store the object data from the video data stored in the ring buffer using the mechanical time code.

5. The manufacturing device status confirmation system according to claim 1, characterized in that: A plurality of the aforementioned video shooting mechanisms are arranged along the aforementioned workpiece conveying direction. The aforementioned inspection agency includes a structure that determines whether multiple inspection items are qualified or not. A filming mechanism determining unit is provided, wherein the filming mechanism determining unit uses a specific table indicating the correspondence between the inspection items and the video filming mechanisms related to the inspection items to determine the video filming mechanism related to the inspection items from among the plurality of video filming mechanisms, The object data storage means is configured to extract and store the object data from the video data obtained by the video shooting means determined by the shooting means determination means.

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