JP6353592B1 - Blister packing machine - Google Patents

Abstract

A blister packaging machine capable of accurately adjusting the position of a cover film and the like. A blister packaging machine includes a position adjusting mechanism for adjusting the position of a cover film. The position adjustment mechanism 50 aligns the registration marks attached to the cover film 4 by stretching the cover film 4 when attaching the cover film 4 to the container film 3. At this time, the registration mark misalignment amount is grasped, and the cover film 4 is stretched accordingly, and when the registration mark is detected at the detection position K by the mark sensor 53, the stretching of the cover film 4 is stopped. . Moreover, while using the cover film 4 to which the registration mark was attached for every predetermined interval shorter than the conveyance amount of the container film 3 once, every time the conveyance operation of the cover film 4 is stopped, the cover film 4 is extended | stretched every time. . [Selection] Figure 5

Description

  The present invention relates to a blister packaging machine.

  In general, a blister pack is composed of a container film in which a pocket portion capable of accommodating an object such as a tablet is formed, and a cover film attached to the container film so as to seal the opening side of the pocket portion. Has been.

  Such a blister pack includes a step of forming a pocket portion while conveying a belt-like container film, a step of filling an object to be stored in the pocket portion, and a cover film for the container film so as to seal the opening side of the pocket portion. It is manufactured through a step of attaching, a step of separating a blister pack as a final product from a strip-shaped blister film formed by attaching both the films.

  In the blister pack, there are cases where symbols, graphics, barcodes, and other designs are printed on the cover film. In such a case, when the cover film is attached to the container film, it is necessary to adjust the position of the cover film so that the design pre-printed on the cover film is at an appropriate position on the blister pack.

  As such a technique, the registration marks attached to the cover film at predetermined intervals are detected, the cover film is stretched as necessary, and the registration marks are aligned, so that the cover film is attached to the container film. A technique for adjusting the position is known (see, for example, Patent Document 1).

JP 2007-69950 A

  The packaging machine which concerns on patent document 1 is a continuous conveyance type thing which attaches a cover film, conveying a container film continuously. In such a packaging machine, the cover film is conveyed at a constant speed and is attached to the container film in a state where a constant tension is applied. Therefore, registration mark detection and alignment can be performed stably.

  However, in the intermittent transport type packaging machine that attaches the cover film while intermittently transporting the container film, the cover film transport operation is accelerated and decelerated, and the tension applied to the cover film is not constant.

  Therefore, in the intermittent conveyance type packaging machine, when the configuration according to Patent Document 1 in which the position adjustment is performed while conveying the cover film is adopted, the registration mark detection error and the alignment error vary greatly. The alignment accuracy of the film may be reduced.

  This invention is made | formed in view of the said situation, and makes it one of the main objectives to provide the blister packaging machine which can perform the position adjustment of a cover film, etc. accurately.

  Hereinafter, each means suitable for solving the above-described problem will be described separately. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A conveying means for intermittently conveying the belt-like container film in which the objects are accommodated in the pocket portion by a predetermined amount;
A blister packaging machine comprising attachment means for attaching a band-shaped cover film to the container film so as to close the pocket portion,
Mark detection means capable of detecting a mark attached to the cover film at a predetermined detection interval at a predetermined interval shorter than a single conveyance amount of the container film;
Based on the detection result of the mark detection means, a mark deviation amount grasping means capable of grasping a positional deviation amount between the mark and the detection position at the time of stopping the transport of the cover film;
Stretching means having a displacement member provided so as to be displaceable, and capable of stretching the cover film by the displacement member;
A displacement amount calculating means for calculating a displacement amount for displacing the displacement member based on the position displacement amount of the mark grasped by the mark displacement amount grasping means;
Based on the displacement amount calculated by the displacement amount calculating means, stretching control means for controlling the displacement of the displacement member;
A stop control unit capable of stopping displacement control of the displacement member by the stretching control unit when the mark detection unit detects the mark at the detection position during stretching of the cover film. A blister packaging machine.

  According to the above means 1, in the intermittent conveyance type blister packaging machine, when the cover film is attached to the container film, the position of the mark attached to the cover film is set to the position of each blister pack by stretching the cover film. It can be adjusted to a predetermined position.

  In particular, according to the present means, the amount of misalignment of the mark is grasped, and the cover film is stretched accordingly, and when the mark is detected by the mark detection means, the stretching of the cover film is stopped. . Thereby, the alignment of the mark, and hence the position adjustment of the cover film can be performed with high accuracy.

  Here, it is also conceivable to complete the alignment of the mark by simply extending the cover film by an amount corresponding to the amount of misalignment of the mark.

  However, in such a case, it is uncertain whether or not the mark is actually aligned, and there is a possibility that the mark is not actually aligned. For example, even if the displacement amount of the displacement member is appropriately calculated according to the displacement amount of the mark, the displacement amount of the displacement member is not properly reflected in the stretch amount of the cover film depending on the manufacturing environment, etc. It may not be matched.

  In addition, since the film conveyance speed (the passing speed of the mark) is high during film conveyance and the detection error tends to be large for the detection of the mark during film conveyance, it is difficult to accurately grasp the amount of mark displacement. . As described above in the “Problem to be Solved by the Invention”, in the intermittent conveyance type packaging machine, such a problem may be more remarkable.

  In addition, in the intermittent transport type packaging machine, as a method of adjusting the position of the cover film, the cover film is stretched every time the cover film transport operation is stopped as in this means, and the mark is aligned. Different methods can be considered.

  For example, when using a cover film that is marked at approximately the same interval as the transport amount of the container film, and detecting the presence or absence of the mark every time the cover film transport operation stops, While the cover film is attached as it is without stretching the cover film, the amount of misalignment of the mark gradually accumulates, and the amount of misalignment reaches a predetermined amount (for example, the mark width) to detect the mark. A method in which the cover film is stretched by a certain amount (for example, the mark width) only when it is not performed (when the mark has passed) is also conceivable.

  However, in such a method, the mark is detected every time the cover film transport operation stops, but only the presence / absence of the mark is detected. There is a possibility that the alignment accuracy of the lowering.

  Further, the amount of stretch of the cover film at one time is large, and there is a possibility that problems such as breakage are likely to occur in the cover film.

  Furthermore, in this method, the cover film may be attached to the container film in a stretched state, or may be attached in a non-stretched state, so that the tension applied when the cover film is attached. Will change every time.

  In addition, when the cover film attachment process is performed without stretching the cover film, the tension applied when attaching the cover film is weak, and the cover film attached to the container film is wrinkled. There is a risk of poor sealing. In particular, in an intermittent conveyance type packaging machine, loosening or the like is likely to occur when the cover film conveyance operation is stopped, and thus such a problem may be more likely to occur.

  On the other hand, this means uses a cover film marked at a predetermined interval shorter than the transport amount of the container film once, and stretches the cover film every time the transport operation of the cover film is stopped. However, it is the structure which performs the attachment process of a cover film. Thereby, in this means, the mark can be aligned at a substantially constant position every time, and the alignment accuracy of the mark can be improved. Furthermore, since the cover film attachment process can be performed in a state where a substantially constant tension is applied to the cover film each time, the occurrence of a sealing failure can be suppressed and the seal quality can be made uniform.

Mean 2. The displacement amount calculating means includes:
Necessary displacement amount of the displacement member according to the mark displacement amount grasped by the mark displacement amount grasping means (minimum necessary for moving the mark to the detection position when the cover film is stretched) The blister packaging machine according to claim 1, wherein an amount obtained by adding a predetermined amount to a required displacement amount of the displacement member is calculated as the displacement amount (target displacement amount).

  Due to the mark detection error as described above, an error may also occur in the required displacement amount of the displacement member in accordance with the mark displacement amount. Therefore, the displacement member is displaced by the required displacement amount, and the cover film is removed. Even when the mark is stretched, the mark does not reach the detection position (mark detection means), and the mark may not be aligned with the detection position.

  On the other hand, when the cover film is stretched by setting the displacement amount (target displacement amount) of the displacement member slightly larger than the required displacement amount as in this means 2, the mark must be detected every time. (Mark detection means) can be reached. As a result, it is possible to improve the mark alignment accuracy.

Means 3. The stop control means includes
When the mark detection unit detects an end (on the upstream or downstream side) of the mark in the film transport direction at the detection position, the extension control unit controls the displacement of the displacement member. The blister packaging machine according to means 1 or 2, wherein the blister packaging machine is configured to be stoppable.

  According to the means 3, the end of the mark on one side in the film transport direction can be aligned with the detection position (mark detection means) each time, and the positional deviation corresponding to the mark width is not allowed. Improvements can be made.

  Means 4. The blister packaging machine according to any one of means 1 to 3, wherein gripping means capable of gripping the cover film is provided at least upstream of the displacement member.

  Although the cover film can be stretched by the frictional force of the loaded roller without gripping the cover film, the gripping means is provided like the present means 4 so that it is more efficient and accurate. The cover film can be stretched.

  Of the cover film, the part located downstream of the attachment means (sealing device) has already been attached to the container film, and the downstream side of the cover film is fixed in the same manner as the gripped state. Therefore, it is not always necessary to provide gripping means on the downstream side of the displacement member. If the gripping means is provided only on the upstream side of the displacement member, the number of parts can be reduced and the configuration can be simplified. On the other hand, when the gripping means is provided on the downstream side of the displacement member, the cover film can be stretched more efficiently and accurately.

  Means 5. The blister packaging machine according to any one of means 1 to 4, wherein the mark detection means is configured to be positionally adjustable with respect to the transport direction of the cover film.

  According to the means 5, since the position of the mark detection means can be adjusted to the optimum position, it is possible to further improve the mark alignment accuracy and further improve the seal quality.

It is the schematic which shows the whole structure of a blister packaging machine. (A) is a perspective view which shows a blister pack, (b) is sectional drawing which shows a blister pack. It is a top view which shows the cover film before attachment. It is a top view which shows a blister film (container film after cover film attachment) etc. It is a schematic block diagram which shows a film position adjustment mechanism etc. It is a flowchart figure which shows the flow of a film attachment process.

  Hereinafter, an embodiment will be described with reference to the drawings. First, the structure of the blister pack to be manufactured will be described in detail.

  As shown in FIGS. 2A and 2B, the blister pack 1 according to this embodiment is attached to the container film 3 having one pocket portion 2 and the container film 3 so as to close the pocket portion 2. The cover film 4 is provided.

  One to-be-contained object 5 is accommodated in the pocket part 2 [refer FIG.2 (b) etc.]. Examples of the object 5 include electronic components, electronic devices, foods, medicines, and medical devices.

  The container film 3 in the present embodiment is made of a thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride). Further, the container film 3 is formed with a flange portion 3 a so as to extend outward from the peripheral edge of the opening of the pocket portion 2.

  On the other hand, the cover film 4 is formed of a film obtained by laminating another kind of synthetic resin film on an aluminum vapor-deposited synthetic resin film, and is attached to the container film 3 (flange portion 3a).

  On the surface of the cover film 4 (the surface opposite to the side attached to the container film 3), information on the object 5 is printed. For example, in the present embodiment, as shown in FIG. 2A, a pattern 4 a made up of characters “ABC”, a barcode, and the like is printed on the surface of the cover film 4.

  As will be described later, the blister pack 1 of the present embodiment includes a step of punching scrap 35a from a strip-shaped blister film 35 (see FIG. 4) formed by attaching a strip-shaped container film 3 and a strip-shaped cover film 4. It is manufactured through a process of separating the blister pack 1 as the final product from the band-shaped blister film 35. In FIG. 4, for the sake of convenience, the blister film 35 is provided with a dotted pattern.

  As shown in FIG. 4, the blister film 35 according to the present embodiment has five blister packs 1 arranged in the film width direction (vertical direction in FIG. 4) and each blister pack in the film transport direction (right direction in FIG. 4). The scraps 35a are connected to each other, the scraps 35b are connected to each blister pack 1 in the film width direction, and the scraps 35c are connected to each other in the film conveying direction at both ends in the film width direction.

  On the belt-like cover film 4, the design 4a is previously printed at predetermined intervals corresponding to each blister pack 1 (see FIG. 3). FIG. 3 is a plan view showing the belt-like cover film 4 before attachment.

  In addition, a registration mark R is printed on the belt-shaped cover film 4 at predetermined intervals in advance at the outer edge portion (the portion that becomes the scrap 35c) on one end side in the film width direction (see FIGS. 3 and 4). However, in FIG. 4, the symbol 4a is omitted for simplification.

  The registration mark R is for adjusting the position of the cover film 4 (positioning of the pattern 4a with respect to the pocket portion 2) when the cover film 4 is attached to the container film 3.

  In this embodiment, the printing pitch P1 of the pattern 4a and the registration mark R in the film transport direction is set slightly shorter than the transport amount (formation pitch of the blister pack 1) P2 of the container film 3 once. For example, the printing pitch P1 of the registration mark R or the like is set to be approximately −0.5 mm to −1.0 mm shorter than the transport amount P2 of the container film 3 once.

  Next, the structure of the blister packaging machine 10 for manufacturing the blister pack 1 will be described.

  As shown in FIG. 1, in the blister packaging machine 10, the raw material of the container film 3 formed in a strip shape is wound and arranged in a roll shape. The container film 3 drawn out from the original fabric is conveyed downstream by a chain clip conveyor 11 as a conveying means.

  The chain clip conveyor 11 includes an endless chain 11a disposed on both sides of the container film 3 in the film width direction, a sprocket 11b on which the endless chain 11a is hung, a motor M1 that intermittently drives the sprocket 11b, An encoder E1 capable of detecting the rotational position of the motor M1 and clips (not shown) provided at predetermined intervals on the endless chain 11a are provided.

  Accordingly, the container film 3 is intermittently moved downstream (from the left side to the right side in FIG. 1) along the longitudinal direction in a state where both ends in the film width direction (portions that become the scrap 35c) are gripped by the clip. Will be conveyed.

  First, a heating device 12 and a pocket portion forming device 13 are provided on the downstream side of the original film of the container film 3. The heating device 12 and the pocket portion forming device 13 constitute the pocket portion forming means in this embodiment.

  The heating device 12 includes an upper mold 12 a and a lower mold 12 b that are arranged above and below the container film 3, and is configured to be able to partially heat the formation range of the pocket portion 2 of the container film 3.

  The pocket portion forming device 13 is similar to the shape of the pocket portion 2 and has an upper die 13a having a small plug (not shown) and a lower die having a molding recess (not shown) corresponding to the shape of the pocket portion 2. 13b.

  First, in a state where the container film 3 is heated by the heating device 12 and becomes relatively flexible, the upper mold 13a and the lower mold 13b relatively move in a direction in which they approach each other. Subsequently, the plug protrudes from the upper mold 13a, and the rough shape of the pocket portion 2 is formed. Finally, air is blown from the upper mold 13 a and the container film 3 is pressed against the molding recess of the lower mold 13 b, thereby forming the pocket portion 2 at a predetermined position of the container film 3. The pocket portion 2 is formed during an interval between intermittent conveyance operations of the container film 3.

  On the downstream side of the pocket portion forming device 13, a filling device 14 is provided as a filling means for filling the object 5 in the pocket portion 2.

  A first inspection device A1 as an inspection unit is provided on the downstream side of the filling device 14. The first inspection apparatus A1 has abnormalities related to the object 5 and the container film 3, such as the presence or absence of the object 5 in the pocket part 2, the molding failure of the pocket part 2, and the presence or absence of a seam (joint tape) of the container film 3. It is a known inspection device capable of inspecting and the like.

  The first inspection apparatus A1 performs the predetermined inspection as described above for each blister pack unit, determines the quality of the blister pack 1, and determines the result of the defect discharge mechanism 18 via the control apparatus 100 described later. Output to etc.

  On the other hand, the original film of the cover film 4 formed in a strip shape is wound and arranged separately from the container film 3 in a roll shape. The cover film 4 drawn out from the original fabric is guided through a feed roller 15 to a seal device 16 provided on the downstream side of the first inspection device A1.

  The sealing device 16 includes an upper mold 16a whose lower surface is heated to a predetermined sealing temperature, and a lower mold 16b in which a recess (not shown) corresponding to the pocket portion 2 is formed. 16b is configured to be vertically movable and press-contactable. The sealing device 16 constitutes attachment means in the present embodiment.

  And between the upper mold | type 16a and the lower mold | type 16b, the container film 3 with which the to-be-contained object 5 was filled with respect to the pocket part 2, and the cover piled up on the container film 3 so that the pocket part 2 might be plugged up The film 4 is fed, and the two films 3 and 4 are pressed by the two molds 16a and 16b, whereby the cover film 4 is adhered (thermally bonded) to the flange portion 3a of the container film 3. As a result, a band-shaped blister film 35 in a state where the pocket portion 2 filled with the object 5 is sealed with the cover film 4 is manufactured. In addition, attachment of the cover film 4 is performed during the interval between intermittent conveyance operations of the container film 3 and the cover film 4.

  In addition, a film position adjusting mechanism 50 is provided between the original film of the cover film 4 and the feed roller 15 to adjust the position of the cover film 4 when the cover film 4 is attached to the container film 3. ing. Details of the film position adjusting mechanism 50 will be described later.

  A second inspection device A2 as an inspection unit is provided on the downstream side of the sealing device 16. The second inspection apparatus A2 is a known inspection apparatus that can inspect abnormalities related to the cover film 4, such as a seal failure and the presence or absence of a seam (joint tape) of the cover film 4, for example.

  The second inspection apparatus A2 performs the predetermined inspection as described above for each blister pack unit, determines whether the blister pack 1 is good or bad, and sends the determination result to the defective product discharge mechanism 18 via the control apparatus 100 described later. Output to etc.

  A scrap punching device 17 as a scrap punching means for punching the scrap 35a from the blister film 35 is provided on the downstream side of the second inspection device A2.

  The scrap punching device 17 includes a punch 17a for punching the scrap 35a from the blister film 35, a die 17b having a punching hole into which the punch 17a is inserted, and a punch punched and provided below the die 17b. And a scrap hopper 17c for storing 35a. Each of the punch 17a and the die 17b is configured to be movable up and down by a driving mechanism (not shown).

  On the downstream side of the scrap punching device 17, a defective product discharge mechanism 18 is provided as a defective discharge means. The defective product discharge mechanism 18 is for excluding defective portions including the blister pack 1 determined to be defective from the blister film 35 when the first inspection device A1 or the second inspection device A2 determines the failure. .

  The defective product discharge mechanism 18 includes a pair of cutters 18a in the film width direction for separating defective portions from the blister film 35, and a defective product hopper 18b for storing defective portions separated from the blister film 35.

  The pair of cutters 18a is configured to be movable up and down between a lower position (cutting position) where the blister film 35 can be cut and an upper position (retracted position) away from the blister film 35 by a driving mechanism (not shown). ing.

  On the downstream side of the defective product discharge mechanism 18, a cutting device (slitter device) 19 is provided as a blister pack separating means for separating the blister pack 1 and the scrap 35b from the blister film 35.

  The cutting device 19 according to the present embodiment cuts a boundary line 35d (see FIG. 4) between the blister pack 1 and the scraps 35b and 35c along the film transport direction as the blister film 35 is transported.

  The cutting device 19 includes an upper rotary blade (round cutter) 19a provided on the upper side of the belt-shaped blister film 35 to be conveyed and a lower rotary blade (round cutter) 19b provided on the lower side of the blister film 35. Each of the boundary lines 35d is cut between the rotary blades 19a and 19b by rotating in the overlapping reverse direction.

  Below the cutting device 19, a conveyor 21 is provided corresponding to the position where each good blister pack 1 cut off from the blister film 35 falls. The non-defective blister pack 1 is transferred to the finished product hopper 22 by the conveyor 21 and temporarily stored.

  Further, below the cutting device 19, a scrap hopper 23 for storing the scrap 35b is provided corresponding to a position where the scrap 35b cut from the blister film 35 falls.

  On the downstream side of the cutting device 19, a cutting device 25 for cutting the scrap 35c remaining after the blister pack 1 or the like is separated is disposed. The scrap 35 c is cut into a predetermined size by the cutting device 25 and stored in the scrap hopper 27.

  The blister packaging machine 10 is provided with a control device 100 (see FIG. 1). The control device 100 includes a CPU as a calculation means, a ROM that stores various programs, a RAM that temporarily stores various data, a touch panel that constitutes display means and operation means, and the like. The control device 100 has a function of monitoring and controlling various signals by inputting and outputting various signals to and from various mechanisms in the blister packaging machine 10 such as the film position adjusting mechanism 50.

  In addition, although illustration is abbreviate | omitted, the blister packaging machine 10 is provided with the film splicing apparatus etc. other than the said various apparatuses. The film splicing device is provided at a position where the original film of the container film 3 and the cover film 4 wound in a roll shape is set. The film splicing device attaches the splicing tape so as to straddle the end portions of the films 3 and 4 being supplied and the starting end portions of the new films 3 and 4 to be supplied next, thereby attaching the films 3 and 4 to each other. It has a function of continuously supplying the films 3 and 4. In addition, the joint part of the films 3 and 4 to which the joint tape is attached in this way is a defective part and is a target for discharge by the defective product discharge mechanism 18.

  The outline of the blister packaging machine 10 is as described above. Hereinafter, the configuration of the film position adjusting mechanism 50 will be described in detail with reference to FIG.

  The film position adjusting mechanism 50 includes a gripping mechanism 51 as a gripping means for gripping the cover film 4 and a stretching means for stretching the cover film 4 in order from the upstream side along the transport path of the cover film 4. A stretching mechanism 52 and a mark sensor 53 as mark detection means for detecting the registration mark R are provided. The film position adjusting mechanism 50 is controlled by the control device 100.

  The gripping mechanism 51 includes a gripping roller 55 on which the cover film 4 pulled out from the original film of the cover film 4 is mounted, a film clamp 56 provided so as to be in pressure contact with the gripping roller 55, and the film clamp And a clamp drive mechanism (fluid pressure cylinder or the like) 57 for driving 56.

  The gripping roller 55 is pivotally supported so as to be freely rotatable with respect to a predetermined position, and is configured to be rotatable by being driven by the transported cover film 4.

  The film clamp 56 is provided by a clamp drive mechanism 57 so as to be slidable in a substantially horizontal direction between a retracted position (see FIG. 5) separated from the gripping roller 55 and a press-contact position where the film clamp 56 is pressed against the gripping roller 55. ing. When the film clamp 56 is in pressure contact with the gripping roller 55, the cover film 4 hung on the gripping roller 55 can be gripped.

  The stretching mechanism 52 includes a stretching roller 60 as a displacement member on which the cover film 4 guided from the gripping roller 55 is hung, a support portion 61 that supports the stretching roller 60, and the support portion 61. A servo motor 62 as a stretching driving means for driving the stretching roller 60, and a guide roller 63 on which the cover film 4 is mounted on the downstream side of the stretching roller 60.

  The stretching roller 60 is pivotally supported so as to be freely rotatable with respect to the support portion 61 and is configured to be rotatable by being driven by the transported cover film 4.

  The support portion 61 is provided so as to be slidable in a substantially horizontal direction along a guide rail (not shown).

  The servo motor 62 has a ball screw 64 connected to its drive shaft (not shown). The ball screw 64 is screwed into a screw hole (not shown) formed in the support portion 61. Thereby, the drawing roller 60 can be slid and displaced in accordance with the rotational drive of the servo motor 62.

  As will be described later, the displacement amount of the stretching roller 60 is appropriately adjusted by the control device 100. The cover film 4 can be stretched by the stretching roller 60 being displaced from a predetermined reference position in a direction away from the gripping mechanism 51 and the guide roller 63 (right direction in FIG. 5).

  The guide roller 63 is pivotally supported at a position above the feed roller 15 so as to be freely rotatable, and is configured to be rotatable by being driven by the transported cover film 4.

  The mark sensor 53 is arranged such that a predetermined position in the vertical direction (film transport direction) between the guide roller 63 and the feed roller 15 is the detection position K.

  Next, the procedure and effect of manufacturing the blister pack 1 by the blister packaging machine 10 configured as described above will be described. However, a film portion for attaching the cover film 4 to the container film 3 mainly after the pocket portion forming step for forming the pocket portion 2 and the filling step for filling the pocket portion 2 with the object 5 to be accommodated. The landing process will be described in detail.

  When the previous film attachment process is finished in the sealing device 16 and a new film attachment process is started, the control device 100 first drives the chain clip conveyor 11 as shown in the flowchart of FIG. Intermittent conveyance of the film 3 is started (step S1). Intermittent conveyance of the cover film 4 is also started so as to follow this.

  In this embodiment, the cover film 4 before attachment is pulled from the original fabric so as to be pulled by a portion (blister film 35) that is located downstream of the sealing device 16 and has already been attached to the container film 3. It is configured to be pulled out. Of course, the present invention is not limited to this, and the cover film 4 may be fed out by a predetermined amount by a feeding roller that moves in synchronization with the chain clip conveyor 11 or the like.

  The container film 3 in which the pocket portion 2 is filled with the object 5 and the upper portion of the container film 3 so as to close the pocket portion 2 with respect to the sealing device 16 (between the upper and lower molds 16a and 16b). The cover film 4 overlaid on will be fed.

  The control device 100 monitors the mark sensor 53 during the conveying operation of both the films 3 and 4, and determines whether or not the registration mark R of the cover film 4 has been detected at the detection position K (step S2). If the registration mark R is not detected here, this process is repeated.

  In the present embodiment, when the mark sensor 53 detects the upstream edge portion of the registration mark R (the upstream end of the registration mark R in the film transport direction), it is determined that the registration mark R has been detected. . Of course, the present invention is not limited to this, and a configuration may be adopted in which the registration mark R is detected when the downstream edge portion of the registration mark R (the end of the registration mark R on the downstream side in the film transport direction) is detected.

  When the registration mark R is detected, the control device 100 starts measuring the transport amounts of both films 3 and 4 based on the value of the encoder E1. That is, measurement of the amount of positional deviation between the detection position K and the registration mark R is started (step S3).

  Thereafter, when the conveyance of both films 3 and 4 is stopped (step S4), the measurement of the displacement amount between the detection position K and the registration mark R is stopped, and this value is stored (step S5). Thereby, it is possible to grasp the amount of misalignment between the registration mark R and the detection position K when the conveyance of the cover film 4 is stopped. Therefore, the function of the control device 100 that executes the processes of steps S3 to S5 constitutes the mark deviation amount grasping means in this embodiment.

  Subsequently, the control device 100 calculates a displacement amount for displacing the stretching roller 60 based on the displacement amount of the registration mark R (step S6). However, in this embodiment, the necessary displacement amount of the stretching roller 60 according to the displacement amount of the registration mark R (the minimum displacement amount of the stretching roller 60 necessary to move the registration mark R to the detection position K). An amount obtained by adding a predetermined amount to is calculated as the displacement amount (target displacement amount). Accordingly, the displacement amount calculating means in the present embodiment is configured by the function of the control device 100 that executes the process of step S6.

  Next, the control device 100 grips the cover film 4 by driving the gripping mechanism 51 and pressing the film clamp 56 against the gripping roller 55 (step S7). In the present embodiment, gripping means for gripping the cover film 4 is not provided on the downstream side of the stretching mechanism 52, but as described above, the cover film 4 is located on the downstream side of the sealing device 16. Is already attached to the container film 3, the downstream side of the cover film 4 is also fixed in the same manner as the gripped state.

  Subsequently, the control device 100 starts a stretching operation for moving the stretching roller 60 in a direction away from the gripping mechanism 51 (step S8). The function of the control device 100 that executes the process of step S8 constitutes the stretching control means in the present embodiment.

  As a result, the cover film 4 between the upstream part gripped by the gripping mechanism 51 and the downstream part attached to the container film 3 on the downstream side of the sealing device 16 is stretched.

  The control device 100 monitors the mark sensor 53 while the cover film 4 is being stretched, and determines whether or not the registration mark R of the cover film 4 has been detected at the detection position K (step S9).

  As described above, in this embodiment, when the mark sensor 53 detects the upstream edge portion of the registration mark R (the upstream end portion of the registration mark R in the film transport direction), it is determined that the registration mark R has been detected. To do. Of course, the present invention is not limited to this, and a configuration may be adopted in which the registration mark R is detected when the downstream edge portion of the registration mark R (the end of the registration mark R on the downstream side in the film transport direction) is detected.

  When the registration mark R is detected, the control device 100 stops the operation of the stretching roller 60 (servo motor 62) and stops the stretching of the cover film 4 (step S11). As a result, the upstream edge portion of the registration mark R is aligned with the detection position K. If the registration mark R is not detected by the target displacement amount, the stretching is stopped in a state where the registration mark R is stretched by the target displacement amount (step 10), and is stored in the control device 100 as a misalignment product. Therefore, the stop control means in this embodiment is comprised by the processing function of the control apparatus 100 which performs the process of step S11.

  In the present embodiment, the rotational speed of the servo motor 62 has reached the point immediately before the displacement amount of the stretching roller 60 reaches the required displacement amount, that is, at the stage where the upstream edge portion of the registration mark R approaches the detection position K. Is set to be slower. As a result, the amount of movement of the registration mark R from the detection position K until the stretching roller 60 (servo motor 62) completely stops after the registration mark R is detected can be minimized. As a result, the registration mark R can be stopped instantaneously, and the registration mark R can be aligned more accurately.

  As described above, when the registration mark R is aligned, the control device 100 drives the sealing device 16 (both upper and lower molds 16a and 16b) to perform a sealing process for attaching the cover film 4 to the container film 3. Execute (Step S12).

After completion of the sealing process, the control device 100 separates the upper and lower molds 16a and 16b of the sealing device 16 and also separates the film clamp 56 of the gripping mechanism 51 from the gripping roller 55 and opens the cover film 4 (step). S13). Thereby, a film attachment process is complete | finished. The stretching roller 60 is driven and controlled to return to the reference position when the cover film 4 is opened in step S13.

  The blister film 35 formed through the film attaching process is transferred to a scrap punching process (scrap punching device 17).

  In the scrap punching device 17, the punch 17 a is positioned at the standby position spaced upward from the blister film 35 and the die 17 b is positioned at the standby position spaced downward from the blister film 35 during conveyance of the blister film 35. .

  When the blister film 35 intermittently conveyed is stopped at a predetermined position, the punch 17a is lowered and the die 17b is raised. Subsequently, when the punch 17a further descends and enters the punching hole of the die 17b while pushing the blister film 35, the scrap 35a is punched from the blister film 35. Thereafter, the punch 17a and the die 17b are separated from the blister film 35, and the punching process of the scrap 35a is completed. As a result, as shown in FIG. 4, the scraps 35a are sequentially punched one by one.

  When the blister film 35 normally has no defective portion, the defective product discharge mechanism 18 does not operate, and the blister film 35 from which the scrap 35 a is punched passes through the defective product discharge mechanism 18 as it is and is transferred to the cutting device 19. .

  On the other hand, when a failure determination result of a predetermined blister pack 1 is input from the first inspection device A1 or the second inspection device A2 to the defective product discharge mechanism 18, the defective product discharge mechanism 18 lowers the pair of cutters 18a. The tip of the cutter 18a is formed with respect to a hole formed by punching the scrap 35a (a hole formed by punching the scrap 35a between the blister pack 1 determined to be non-defective and the blister pack 1 determined to be defective). insert.

  Subsequently, the blister film 35 is cut along the film conveying direction in accordance with the conveying operation of the blister film 35. In the present embodiment, cutting is performed along a boundary line 35d between the blister pack 1 and the scrap 35c.

  The defective product discharge mechanism 18 maintains the cutter 18a at the cutting position where the cutter 18a is lowered until the next determined good portion is transferred, that is, as long as the determined defective portion continues. When the hole formed by punching out the scrap 35a between the blister pack 1 determined to be defective and the blister pack 1 determined to be non-defective is transferred to the position of the cutter 18a, the cutting is finished, and the cutter 18a is finished. Is separated to the upper retracted position. Thereafter, the blister film 35 from which the defective portion has been cut is transferred to the cutting device 19.

  In the cutting device 19, a boundary line 35d between the blister pack 1 and the scraps 35b and 35c is cut along the film conveyance direction. Thereby, the blister pack 1 is separated from the blister film 35, and the production of the blister pack 1 is completed.

  As described above in detail, in the present embodiment, when the cover film 4 is attached to the container film 3 in the intermittent conveyance type blister packaging machine 10, the cover film 4 is stretched to be attached to the cover film 4. The position of the registered mark R can be adjusted to a predetermined position of each blister pack 1.

  In addition, according to the present embodiment, the amount of misalignment of the registration mark R is grasped, and the cover film 4 is stretched accordingly. Is configured to stop. Thereby, the registration mark R can be aligned and the cover film 4 can be adjusted with high accuracy.

  Particularly in the present embodiment, every time the cover film 4 with the registration mark R is attached at every predetermined interval P1 shorter than the one-time conveyance amount P2 of the container film 3, the conveyance operation of the cover film 4 is stopped. The cover film 4 is attached every time while the cover film 4 is stretched.

  As a result, in this embodiment, the upstream edge portion of the registration mark R can be aligned at a substantially constant position (detection position K) each time, and a positional deviation corresponding to the mark width is not allowed. Can be improved.

  Furthermore, since the attaching process of the cover film 4 can be performed in a state where a substantially constant tension is applied to the cover film 4 every time, it is possible to suppress the occurrence of defective sealing and make the sealing quality uniform.

  In addition, in this embodiment, when calculating the displacement amount for displacing the stretching roller 60, the necessary displacement amount of the stretching roller 60 according to the displacement amount of the registration mark R (the registration mark R is moved to the detection position K). The amount obtained by adding a predetermined amount to the minimum amount of displacement of the stretching roller 60 required for the calculation is calculated as a displacement amount (target displacement amount).

  In this way, by setting the displacement amount (target displacement amount) of the stretching roller 60 slightly larger than the required displacement amount, the registration mark R is always moved to the detection position K every time the cover film 4 is stretched. Can be reached. As a result, it is possible to improve the alignment accuracy of the registration mark R.

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

  (A) The configuration of the blister pack 1 to be manufactured is not limited to the above embodiment, and a different configuration may be adopted.

  For example, the blister pack 1 in the above embodiment has a configuration including one pocket portion 2, but is not limited thereto, and may be configured to have a plurality of pocket portions formed in one blister pack. Further, the size and shape of the blister pack 1 and the pocket portion 2 are not limited to the above embodiment, and different configurations may be adopted.

  Moreover, the structure of the blister film 35 is not limited to the said embodiment. For example, in the above-described embodiment, five blister packs 1 are manufactured at the same time in the width direction of the blister film 35, but instead, for example, only two sheets in the width direction of the blister film 35 may be manufactured. Moreover, it is good also as a structure manufactured one by one in the width direction.

  (B) The material and layer structure of the container film 3 and the cover film 4 are not limited to the above embodiment.

  For example, in the above-described embodiment, the container film 3 is formed of a thermoplastic resin material such as PP or PVC. However, the present invention is not limited to this, and the container film 3 is not only a resin material such as PET but also an aluminum laminate film. It is good also as a structure formed with the metal material which made aluminum the main material.

  Moreover, in the said embodiment, although the design 4a is printed only on the surface of the cover film 4, it is good also as a structure by which the design was printed on the back surface of the cover film 4 instead of or in addition to this.

  Moreover, in the said embodiment, although the cover film 4 by which the pattern 4a and the registration mark R were printed beforehand is used, not only this but a printing mechanism is provided in the blister packaging machine 10, and this cover mechanism is used by this printing mechanism. 4 may be configured to print the symbol 4a, the registration mark R, and the like.

  (C) The configuration of the gripping means is not limited to the above embodiment. For example, in the above-described embodiment, the gripping means (the gripping mechanism 51) is provided only on the upstream side of the stretching mechanism 52, but in addition, the gripping means such as a chuck is provided on the downstream side of the sealing device 16. It is good.

  The gripping mechanism 51 according to the embodiment includes a gripping roller 55 on which the cover film 4 is hung, and a film clamp 56 provided so as to be able to press against the gripping roller 55. Not limited to this, the gripping means may be configured by a chuck or the like.

  (D) The configuration of the stretching means is not limited to the above embodiment. For example, in the above embodiment, the stretching roller 60 is displaced by the servo motor 62. Not limited to this, for example, the stretching roller 60 can be displaced until it is regulated by a predetermined stopper member by a fluid pressure cylinder or the like, and the displacement of the stretching roller 60 can be changed by changing the position of the stopper member. It is good also as a structure which can adjust. Further, the displacement member is not limited to the stretching roller 60, and other configurations may be adopted.

  (E) The configuration of the mark detection means is not limited to the above embodiment. For example, in the above embodiment, the mark sensor 53 (detection position K) is arranged between the guide roller 63 and the feed roller 15. However, the present invention is not limited to this, and may be configured to be arranged at other different positions such as the downstream side of the feed roller 15. In terms of improving the registration accuracy of the registration mark R, it is preferable that the registration mark R is disposed closer to the seal device 16.

  Further, the mark sensor 53 may be configured such that the position of the mark sensor 53 can be adjusted with respect to the transport direction of the cover film 4.

  (F) In the above embodiment, when calculating the displacement amount for displacing the stretching roller 60, the necessary displacement amount of the stretching roller 60 according to the displacement amount of the registration mark R (the registration mark R is moved to the detection position K). The amount obtained by adding a predetermined amount to the minimum amount of displacement of the drawing roller 60 required to do this is calculated as a displacement amount (target displacement amount).

  Not limited to this, the required displacement amount of the stretching roller 60 according to the misregistration amount of the registration mark R may be a displacement amount for displacing the stretching roller 60.

  DESCRIPTION OF SYMBOLS 1 ... Blister pack, 2 ... Pocket part, 3 ... Container film, 4 ... Cover film, 4a ... Design, 10 ... Blister packaging machine, 11 ... Chain clip conveyor, 15 ... Feed roller, 16 ... Sealing device, 35 ... Blister film 50 ... Film position adjusting mechanism, 51 ... Grip mechanism, 52 ... Stretching mechanism, 53 ... Mark sensor, 55 ... Gripping roller, 56 ... Film clamp, 60 ... Stretching roller, 62 ... Servo motor, 100 ... Control device , E1... Encoder, K... Detection position, M1... Motor, P1... Registration mark printing pitch, P2 One time transport amount of container film (blister pack formation pitch), R.

Claims (5)

A conveying means for intermittently conveying the belt-like container film in which the objects are accommodated in the pocket portion by a predetermined amount;
A blister packaging machine comprising attachment means for attaching a band-shaped cover film to the container film so as to close the pocket portion,
Mark detection means capable of detecting a mark attached to the cover film at a predetermined detection interval at a predetermined interval shorter than a single conveyance amount of the container film;
Based on the detection result of the mark detection means, a mark deviation amount grasping means capable of grasping a positional deviation amount between the mark and the detection position at the time of stopping the transport of the cover film;
Stretching means having a displacement member provided so as to be displaceable, and capable of stretching the cover film by the displacement member;
A displacement amount calculating means for calculating a displacement amount for displacing the displacement member based on the position displacement amount of the mark grasped by the mark displacement amount grasping means;
Based on the displacement amount calculated by the displacement amount calculating means, stretching control means for controlling the displacement of the displacement member;
A stop control unit capable of stopping displacement control of the displacement member by the stretching control unit when the mark detection unit detects the mark at the detection position during stretching of the cover film. A blister packaging machine. The displacement amount calculating means includes:
2. The displacement amount is calculated by adding a predetermined amount to a required displacement amount of the displacement member according to the mark displacement amount grasped by the mark displacement amount grasping means. The blister packaging machine described. The stop control means includes
When the mark detection means detects an end of one side of the mark in the film transport direction at the detection position, the displacement control of the displacement member by the stretching control means can be stopped. The blister packaging machine according to claim 1 or 2.   The blister packaging machine according to any one of claims 1 to 3, further comprising gripping means capable of gripping the cover film at least upstream of the displacement member.   The blister packaging machine according to any one of claims 1 to 4, wherein the mark detection means is configured to be position-adjustable with respect to a transport direction of the cover film.

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