WO2019026316A1

WO2019026316A1 - Blister packaging machine

Info

Publication number: WO2019026316A1
Application number: PCT/JP2018/003791
Authority: WO
Inventors: 崇文森
Original assignee: Ckd株式会社
Priority date: 2017-08-02
Filing date: 2018-02-05
Publication date: 2019-02-07
Also published as: CN110944910B; KR20200037139A; TW201910210A; JP2019026365A; JP6353592B1; TWI656067B; KR102377977B1; CN110944910A

Abstract

Provided is a blister packaging machine capable of accurately performing position adjustment or the like of a cover film. The blister packaging machine is provided with a position adjustment mechanism (50) that performs position adjustment of a cover film (4). In attaching the cover film (4) to a container film (3), the position adjustment mechanism (50) stretches the cover film (4) to align a registration mark added to the cover film (4). Specifically, the position adjustment mechanism (50) monitors a positional deviation amount of the registration mark, and stretches the cover film (4) correspondingly. When the registration mark is detected by a mark sensor (53) at a detection position (K), the position adjustment mechanism (50) stops stretching the cover film (4). The position adjustment mechanism (50) uses the cover film (4) to which the registration mark is added in each prescribed interval shorter than a single conveyance amount of the container film (3), and stretches the cover film (4) each time a conveyance operation of the cover film (4) is stopped.

Description

Blister packing machine

The present invention relates to blister packaging machines.

Generally, a blister pack is composed of a container film having a pocket portion capable of containing a substance such as a tablet and a cover film attached to the container film so as to seal the open side of the pocket portion. It is done.

The blister pack comprises a step of forming a pocket while transporting a strip-like container film, a step of filling the pocket with a substance to be accommodated, and a cover film against the container film so as to seal the open side of the pocket. And the step of separating the blister pack, which is the final product, from the strip-shaped blister film to which the two films are attached.

In a blister pack, designs such as characters, figures, and barcodes may be printed on a cover film. In such a case, when attaching the cover film to the container film, it is necessary to adjust the position of the cover film so that the pattern printed on the cover film comes to the appropriate position of the blister pack.

As such a technique, registration marks attached to the cover film at predetermined intervals are detected, the cover film is appropriately stretched as needed, and alignment of the registration marks is performed to attach the cover film 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 attached to the container film in a state of being subjected to a constant tension, so that registration marks can be detected and aligned stably.

However, in the intermittent conveyance type packaging machine which attaches the cover film while intermittently conveying the container film, the conveyance operation of the cover film has acceleration and deceleration, and the tension applied to the cover film is not constant.

Therefore, if the configuration according to Patent Document 1 in which the position adjustment is performed while conveying the cover film is temporarily adopted in the intermittent conveyance type packaging machine, the detection error of the registration mark and the variation of the alignment error become large. There is a risk that the film alignment accuracy may be reduced.

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

Hereinafter, each means suitable for solving the above-mentioned subject will be described by item. In addition, the operation and effect specific to the corresponding means will be added as needed.

Means 1. Conveying means for intermittently conveying a belt-like container film in which the contained object is accommodated in the pocket portion by a predetermined amount;
And b) an attachment means for attaching a strip-like 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 position at predetermined intervals shorter than a single conveyance amount of the container film;
Mark displacement amount grasping means capable of grasping the positional displacement amount between the mark and the detection position when conveyance of the cover film is stopped based on the detection result of the mark detection means;
Stretching means having a displaceable displacement member, which is capable of stretching the cover film by the displacement member;
Displacement amount calculation means for calculating a displacement amount for displacing the displacement member based on the displacement amount of the mark grasped by the mark displacement amount grasping device;
Stretching control means for performing displacement control of the displacement member based on the displacement amount calculated by the displacement amount calculation means;
And a stop control means capable of stopping displacement control of the displacement member by the extension control means when the mark detection means detects the mark at the detection position during the extension of the cover film. Characterized blister packaging machine.

According to the above means 1, in the intermittent transfer type blister packaging machine, when attaching the cover film to the container film, the position of the mark attached to the cover film is set to that 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 position shift amount of the mark is grasped, the cover film is stretched accordingly, and when the mark is detected by the mark detection means, the extension of the cover film is stopped. . As a result, the alignment of the marks, and hence the position adjustment of the cover film, can be performed with high accuracy.

Here, it is also conceivable to extend the cover film by an amount corresponding to the positional displacement amount of the marks to complete the alignment of the marks.

However, in such a case, it may not be confirmed whether the mark is actually aligned or not, and it may be uncertain and the mark may not actually be 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 on the extension amount of the cover film due to the manufacturing environment or the like. It is also possible that they do not fit.

It should be noted that during film transport, the film transport speed (mark passing speed) is high, and detection errors tend to be large with regard to mark detection during film transport, so it is also difficult to accurately grasp the mark misalignment amount . As described in the above-mentioned "Problem to be solved by the invention", in the intermittent conveyance type packaging machine, such a problem may become more remarkable.

In the intermittent conveyance type packaging machine, as a method of adjusting the position of the cover film, the cover film is stretched each time the conveyance operation of the cover film is stopped as in this means, and the mark alignment is performed. A method different from the method to do is also considered.

For example, while using a cover film marked at substantially the same intervals as a single conveyance amount of the container film, the presence or absence of a mark is detected each time the conveyance operation of the cover film is stopped, and a mark is detected. While the cover film is attached as it is without stretching the cover film, the positional deviation of the marks gradually accumulates, and the positional deviation reaches a predetermined amount (for example, the mark width), and the marks are detected. A method is also conceivable in which the cover film is stretched by a fixed amount (for example, the mark width) only when it is no longer used (when the mark passes).

However, in such a method, although the mark is detected each time the conveyance operation of the cover film is stopped, the positional deviation corresponding to the mark width is permitted only by detecting the presence or absence of the mark. There is a risk that the alignment accuracy of

In addition, the amount of extension of the cover film at one time may be large, and the cover film may be prone to defects such as breakage.

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

In addition, when the attachment process of the cover film 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 has wrinkles Etc., there is a risk of sealing failure. In the case of the intermittent conveyance type packaging machine, in particular, when the conveyance operation of the cover film is stopped, loosening or the like is likely to occur, and such a problem may be more likely to occur.

On the other hand, in this means, the cover film with marks attached at predetermined intervals shorter than the amount of conveyance of the container film once is used, and the cover film is stretched every time the conveyance operation of the cover film is stopped. While the cover film is attached, the cover film is attached. Thus, according to this means, the mark can be positioned at a substantially constant position each time, and the alignment accuracy of the mark can be improved. Furthermore, since the cover film can be attached in a state where a substantially constant tension is applied to the cover film each time, the occurrence of seal failure can be suppressed and the seal quality can be made uniform.

Means 2. The displacement amount calculation means
Necessary displacement amount of the displacement member according to the displacement amount of the mark grasped by the mark displacement amount grasping means (minimum required to move the mark to the detection position when the cover film is stretched) The blister packaging machine according to the means 1, wherein an amount obtained by adding a predetermined amount to the required displacement amount of the displacement member is calculated as the displacement amount (target displacement amount).

The required displacement of the displacement member corresponding to the displacement of the mark may also cause an error due to the detection error of the mark as described above, so the displacement member is displaced by the required displacement and the cover film is moved. Even when stretched, the mark may not reach the detection position (mark detection means), and the mark may not be aligned with the detection position.

On the other hand, as in the present means 2, by setting the displacement amount of the displacement member (target displacement amount) slightly larger than the required displacement amount, when stretching the cover film, the mark always must be detected every time It becomes possible to reach (mark detection means). As a result, the mark alignment accuracy can be improved.

Means 3. The stop control means is
When the mark detection unit detects an end (an upstream or downstream edge portion) of the mark in the film transport direction at the detection position, displacement control of the displacement member by the extension control unit is performed. The blister packaging machine according to the

means

1 or 2, characterized in that it is configured to be stoppable.

According to the above means 3, the end of one side of the mark in the film transport direction can be aligned with the detection position (mark detection means) every time, and positional deviation by the mark width can not be accepted. It can improve.

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

It is also possible to stretch the film by the frictional force of the hooked roller without grasping the cover film, but by providing the grasping means as in the present means 4, more efficient and accurate The cover film can be stretched.

In the cover film, the portion located on the downstream side of the attachment means (seal device) is already attached to the container film, and the downstream side of the cover film is also fixed in the same manner as in the gripped state. In the downstream side of the displacement member, it is not always necessary to provide the gripping means. If the holding means is provided only on the upstream side of the displacement member, the number of parts can be reduced and the structure can be simplified. On the other hand, when the holding means is also 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 the means 1 to 4, wherein the mark detection means is configured to be positionally adjustable in 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 alignment accuracy of the marks 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 a 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 configuration of the blister pack to be manufactured will be described in detail.

As shown in FIGS. 2 (a) and 2 (b), the blister pack 1 in this embodiment is attached to the container film 3 provided with one pocket 2 and the container film 3 so as to close the pocket 2. And the cover film 4.

The to-be-stored thing 5 is accommodated in the pocket part 2 1 each [refer FIG.2 (b) etc.]. As the to-be-contained thing 5, an electronic component, an electronic device, a foodstuff, a medicine, a medical device etc. are mentioned, for example.

The container film 3 in the present embodiment is made of, for example, a thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride). Further, a flange 3 a is formed on the container film 3 so as to extend outward from the peripheral edge of the opening of the pocket 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 to be attached to the container film 3), information etc. concerning the contained item 5 is printed. For example, in the present embodiment, as shown in FIG. 2A, a pattern 4a made of characters of "ABC", a bar code or the like is printed on the surface of the cover film 4.

As will be described later, in the blister pack 1 of the present embodiment, a process of punching out scraps 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 , And the step of separating the blister pack 1 as the final product from the strip-like blister film 35. In FIG. 4, for the sake of convenience, the portion of the blister film 35 is given a dot pattern.

The blister film 35 according to the present embodiment is, as shown in FIG. 4, five blister packs 1 aligned 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 between the two pieces, the scraps 35b are connected between the blister packs 1 in the film width direction, and the scraps 35c are connected along the film transport direction at both ends in the film width direction.

The above-mentioned pattern 4a is printed on the belt-like cover film 4 at predetermined intervals in advance 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, on the belt-like cover film 4, registration marks R are printed at predetermined intervals in advance in the outer edge portion (portion to be 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.

When the cover film 4 is attached to the container film 3, the registration mark R is used to adjust the position of the cover film 4 (position alignment of the pattern 4 a with the pocket 2).

In the present embodiment, the printing pitch P1 of the pattern 4a and the registration mark R in the film transport direction is set to be slightly shorter than the single transport amount of the container film 3 (the formation pitch of the blister pack 1) P2. For example, the printing pitch P1 of the registration mark R or the like is set to be shorter by about -0.5 mm to -1.0 mm with respect to the single conveyance amount P2 of the container film 3.

Next, the structure of the blister packaging machine 10 for manufacturing the said blister pack 1 is demonstrated.

As shown in FIG. 1, in the blister packaging machine 10, the raw fabric of the container film 3 formed in strip shape is wound and arrange | positioned in roll shape. The container film 3 drawn from the raw fabric is conveyed toward the downstream side 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, and a motor M1 that intermittently rotates 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.

Thereby, the container film 3 is intermittent to the downstream side along the longitudinal direction (from left to right in FIG. 1) in a state in which both film width direction end portions (portions to become scraps 35c) are gripped by the clip. Will be transported.

The heating device 12 and the pocket portion forming device 13 are first provided on the downstream side of the raw film of the container film 3. The heating device 12 and the pocket portion forming device 13 constitute a pocket portion forming means in the present embodiment.

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

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

Then, 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 the direction in which they approach each other. Subsequently, a plug protrudes from the upper die 13 a to form a rough shape of the pocket 2. Finally, air is blown from the upper mold 13a and the container film 3 is pressed against the molding recess of the lower mold 13b, whereby the pocket 2 is formed at a predetermined position of the container film 3. The formation of the pocket portion 2 is performed during the interval between the intermittent transport operations of the container film 3.

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

On the downstream side of the filling device 14, a first inspection device A1 as an inspection means is provided. The first inspection apparatus A1 is an abnormality relating to the contained item 5 or the container film 3 such as the presence or absence of the contained item 5 in the pocket 2, the molding failure of the pocket 2 or the presence or absence of a joint (joint tape) of the container film 3. And so on.

The first inspection apparatus A1 executes the predetermined inspection as described above for each blister pack, determines the quality of the blister pack 1, and the defective product discharging mechanism 18 via the control device 100 described later. Output to etc.

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

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

And between the upper mold 16a and the lower mold 16b, the container film 3 in which the container 5 is filled in the pocket 2 and the cover superimposed on the container film 3 so as to close the pocket 2 The film 4 is fed, and the two

films

3 and 4 are pressed against each other 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. Thereby, the strip | belt-shaped blister film 35 of the state which sealed the pocket part 2 with which the accommodation thing 5 was filled with the cover film 4 is manufactured. The attachment of the cover film 4 is performed during the interval between the intermittent transport operations of the container film 3 and the cover film 4.

Further, a film position adjusting mechanism 50 is provided between the raw film of the cover film 4 and the feed roller 15 for adjusting the position of the cover film 4 when the cover film 4 is attached to the container film 3. ing. The details of the film position adjusting mechanism 50 will be described later.

On the downstream side of the sealing device 16, a second inspection device A2 as an inspection means is provided. The second inspection apparatus A2 is a known inspection apparatus capable of inspecting, for example, an abnormality in the cover film 4 such as a seal failure or the presence or absence of a joint (joint tape) of the cover film 4.

The second inspection apparatus A2 executes the predetermined inspection as described above in units of blister packs, determines the quality of the blister pack 1, and rejects defective products via the control device 100, which will be described later. Output to etc.

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

The scrap punching device 17 is provided with 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 scrap provided below the die 17b. And a scrap hopper 17c for storing 35a. The punch 17a and the die 17b are vertically movable by a drive mechanism (not shown).

On the downstream side of the scrap punching device 17, a defective product discharging mechanism 18 as a defective discharging unit is provided. The defective product discharging mechanism 18 is for removing a defective portion including the blister pack 1 determined as defective from the blister film 35 when the defect is determined by the first inspection device A1 or the second inspection device A2. .

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

The pair of cutters 18a are configured to be vertically movable between a lower position (cutting position) where the blister film 35 can be cut and an upper position (retracting position) separated from the blister film 35 by a drive mechanism (not shown). ing.

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

The cutting device 19 according to the present embodiment cuts the boundary 35 d (see FIG. 4) between the blister pack 1 and the

scraps

35 b and 35 c along the film transport direction as the blister film 35 is transported.

In the cutting device 19, an upper rotary blade (round cutter) 19 a provided on the upper side of a strip-shaped blister film 35 to be conveyed and a lower rotary blade (round cutter) 19 b provided on the lower side of the blister film 35 mutually By overlapping and rotating in the opposite direction, each boundary line 35d is cut between the

rotary blades

19a and 19b.

Under the cutting device 19, a conveyor 21 is provided corresponding to the position where each good blister pack 1 separated 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 the position where the scrap 35b separated from the blister film 35 falls.

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

Further, the blister packaging machine 10 is provided with a control device 100 (see FIG. 1). The control device 100 includes a CPU as an arithmetic operation unit, a ROM for storing various programs, a RAM for temporarily storing various data, a touch panel for forming a display unit and an operation unit, and the like. The control device 100 has a function of monitoring and controlling various signals by performing input and output of various signals with various mechanisms in the blister packaging machine 10 such as the film position adjusting mechanism 50.

Although not shown, the blister packaging machine 10 is provided with a film splicing device in addition to the above-described various devices. 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 pastes both

films

3 and 4 by applying a splicing tape so as to straddle the end portion of the

film

3 or 4 being supplied and the beginning portion of the

new film

3 or 4 to be supplied next. It has a function of continuously feeding the

films

3 and 4. The joint portions of the

films

3 and 4 to which the splicing tape is attached in this manner are defective portions, which are to be discharged by the defective product discharging mechanism 18.

Now, the outline of the blister packaging machine 10 is as described above, but in the following, 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 gripping means for gripping the cover film 4 and a stretching means for stretching the cover film 4 in this 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 drawn from the raw material of the cover film 4 is hung, a film clamp 56 provided to be able to press the gripping roller 55, and the film clamp And a clamp drive mechanism (a fluid pressure cylinder or the like) 57 for driving the motor 56.

The holding roller 55 is rotatably supported at a predetermined position so as to be freely rotatable, and is configured to be rotatable following the conveyed cover film 4.

The film clamp 56 is provided so as to be slidably displaceable in a substantially horizontal direction between a retracted position (see FIG. 5) separated from the gripping roller 55 and a press-contacting position pressed against the gripping roller 55 by the clamp drive mechanism 57. ing. When the film clamp 56 is in pressure contact with the gripping roller 55, the cover film 4 mounted 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 supporting the stretching roller 60, and the support portion 61. A servomotor 62 as a stretching drive means for driving the stretching roller 60, and a guide roller 63 on which the cover film 4 is hung on the downstream side of the stretching roller 60.

The stretching roller 60 is rotatably supported by the support portion 61 so as to be freely rotatable, and is configured to be rotatable following the conveyed 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 servomotor 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. Accordingly, the drawing roller 60 can be slide-displaced with the rotational driving of the servomotor 62.

As 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 displacing the stretching roller 60 from the predetermined reference position in the direction (right direction in FIG. 5) separating from the gripping mechanism 51 and the guide roller 63.

The guide roller 63 is rotatably supported at a position above the feed roller 15 and is configured to be rotatable following the conveyed cover film 4.

The mark sensor 53 is disposed such that a predetermined position between the guide roller 63 and the feed roller 15 in the vertical direction (film transport direction) 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 pocket portion forming step of forming the pocket portion 2 and a step after the filling step of filling the contained portion 5 in the pocket portion 2 are mainly performed, the film attachment for attaching the cover film 4 to the container film 3 mainly. The dressing process will be described in detail.

When the previous film attachment process is completed 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 to follow this.

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

With respect to the sealing device 16 (between the upper and

lower molds

16a and 16b) by the film transport, the container film 3 in which the container 5 is filled in the pocket 2 and the upper side of the container film 3 so as to close the pocket 2 The cover film 4 stacked on top of the other will be fed.

The control device 100 monitors the mark sensor 53 during the transport operation of both the

films

3 and 4 and determines whether the registration mark R of the cover film 4 is 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 upstream edge of the registration mark R (the end upstream of the registration mark R in the film transport direction) is detected by the mark sensor 53, it is determined that the registration mark R is detected. . Of course, the present invention is not limited to this, and it may be determined that the registration mark R is detected when the downstream edge of the registration mark R (the end downstream of the registration mark R in the film conveyance direction) is detected.

Then, when the registration mark R is detected, the control device 100 starts measurement of the transport amounts of both the

films

3 and 4 based on the value of the encoder E1. That is, the measurement of the positional deviation amount between the detection position K and the registration mark R is started (step S3).

Thereafter, when the transport of both

films

3 and 4 is stopped (step S4), the measurement of the positional deviation amount between the detection position K and the registration mark R is stopped, and this value is stored (step S5). As a result, the amount of positional deviation between the registration mark R and the detection position K when the conveyance of the cover film 4 is stopped can be grasped. Therefore, the mark deviation amount grasping means in the present embodiment is configured by the function of the control device 100 that executes the processes of the steps S3 to S5.

Subsequently, the control device 100 calculates a displacement amount for displacing the drawing roller 60 based on the positional displacement amount of the registration mark R (step S6). However, in the present embodiment, the required displacement of the drawing roller 60 according to the positional deviation of the registration mark R (displacement of the drawing roller 60 at least necessary to move the registration mark R to the detection position K) An amount obtained by adding a predetermined amount to the above is calculated as the displacement amount (target displacement amount). Therefore, the displacement amount calculation 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 drives the gripping mechanism 51 to press the film clamp 56 against the gripping roller 55, thereby gripping the cover film 4 (step S7). In the present embodiment, the holding means for holding the cover film 4 is not provided on the downstream side of the drawing mechanism 52, but as described above, the cover film 4 is a portion 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 it is gripped.

Subsequently, the control device 100 starts a stretching operation of moving the stretching roller 60 in a direction away from the holding mechanism 51 or the like (step S8). The extension control means in the present embodiment is configured by the function of the control device 100 that executes the process of step S8.

Thereby, the cover film 4 between the upstream side portion held by the holding mechanism 51 and the downstream side portion 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 stretching the cover film 4 and determines whether the registration mark R of the cover film 4 is detected at the detection position K (step S9).

Similarly to the above, in the present embodiment, when the upstream edge of the registration mark R (the end on the upstream side in the film transport direction of the registration mark R) is detected by the mark sensor 53, it is determined that the registration mark R is detected. Do. Of course, the present invention is not limited to this, and it may be determined that the registration mark R is detected when the downstream edge of the registration mark R (the end downstream of the registration mark R in the film conveyance direction) is detected.

Then, when the registration mark R is detected, the control device 100 stops the operation of the drawing roller 60 (servo motor 62), and stops the drawing 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. When the registration mark R is not detected by the target displacement amount, the drawing is stopped in a state in which the target displacement amount is stretched (step 10), and stored in the control device 100 as a misaligned product. Accordingly, the processing function of the control device 100 that executes the processing of step S11 constitutes the stop control means in the present embodiment.

In the present embodiment, the rotational speed of the servomotor 62 is up to that point immediately before the displacement amount of the drawing roller 60 reaches the required displacement amount, ie, when the upstream edge of the registration mark R approaches the detection position K. It is set to be slower than. As a result, the amount of movement of the registration mark R can be minimized as much as the registration mark R is detected at the detection position K and the stretching roller 60 (servo motor 62) is completely stopped. As a result, it is possible to stop the registration mark R 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 (upper and

lower molds

16 a and 16 b) to perform the sealing process of attaching the cover film 4 to the container film 3. Execute (step S12).

After the sealing process is completed, the control device 100 separates the upper and lower dies 16a and 16b of the sealing device 16 and separates the film clamp 56 of the gripping mechanism 51 from the gripping roller 55 to open the cover film 4 (step S13). This completes the film attachment process. The stretching roller 60 is 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 attachment process is transferred to a scrap punching process (scrap punching apparatus 17).

In the scrap punching device 17, the punch 17a is positioned at the standby position spaced apart from the blister film 35 while the blister film 35 is transported, and the die 17b is positioned at the standby position spaced apart from the blister film 35. .

Then, when the blister film 35 to be intermittently transported is stopped at a predetermined position, the punch 17a is lowered and the die 17b is raised. Subsequently, the punch 17a is further lowered, and while pushing in the blister film 35, when it enters the punching hole of the die 17b, the scrap 35a is punched out of the blister film 35. Thereafter, the punch 17 a and the die 17 b are separated from the blister film 35 to complete the punching process of the scrap 35 a. Thereby, as shown in FIG. 4, the scraps 35a are sequentially punched one by one.

Normally, the defective product discharging mechanism 18 does not operate when the blister film 35 has no defective portion, and the blister film 35 in which the scrap 35 a is punched passes the defective product discharging mechanism 18 as it is and is transferred to the cutting device 19. .

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

Subsequently, the blister film 35 is cut along the film conveyance direction as the blister film 35 is conveyed. In the present embodiment, cutting is performed along the boundary 35 d between the blister pack 1 and the scrap 35 c.

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

In the cutting device 19, the boundary 35d between the blister pack 1 and the

scraps

35b and 35c is cut along the film transport direction. Thereby, the blister pack 1 is separated from the blister film 35, and the manufacture of the blister pack 1 is completed.

As described above in detail, in the present embodiment, when attaching the cover film 4 to the container film 3 in the intermittent transfer type blister packaging machine 10, the cover film 4 is stretched to attach the cover film 4. The position of the registered registration mark R can be aligned with the predetermined position of each blister pack 1.

Further, according to the present embodiment, when the positional shift amount of the registration mark R is grasped and the cover film 4 is stretched according to this, when the registration mark R is detected by the mark sensor 53, the cover film 4 is stretched. Is configured to stop. As a result, the alignment of the registration marks R and, consequently, the position adjustment of the cover film 4 can be accurately performed.

In particular, in the present embodiment, the cover film 4 to which the registration marks R are attached at predetermined intervals P1 shorter than the single transport amount P2 of the container film 3 is used, and every time the transport operation of the cover film 4 is stopped Each time the cover film 4 is stretched, the cover film 4 is attached.

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

Furthermore, since the process of attaching the cover film 4 can be performed in a state where a substantially constant tension is applied to the cover film 4 each time, the occurrence of sealing failure can be suppressed and the seal quality can be made uniform.

In addition, in the present embodiment, when calculating the displacement amount for displacing the drawing roller 60, the required displacement amount of the drawing roller 60 according to the positional deviation amount of the registration mark R (moving the registration mark R to the detection position K A displacement amount (target displacement amount) is calculated by adding a predetermined amount to the displacement amount of the drawing roller 60 which is the minimum required to do so.

As described above, by setting the displacement amount (target displacement amount) of the drawing roller 60 slightly larger than the necessary displacement amount, the registration mark R is always moved to the detection position K every time the cover film 4 is drawn. It is possible to reach it. As a result, the alignment accuracy of the registration mark R can be improved.

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

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

For example, although the blister pack 1 in the above embodiment is configured to include one pocket portion 2, the present invention is not limited to this, and a configuration may be employed in which a plurality of pocket portions are formed in one blister pack. Further, the size, shape, and the like of the blister pack 1 and the pocket portion 2 are not limited to the above embodiment, and different configurations may be adopted.

Further, the configuration of the blister film 35 is not limited to the above embodiment. For example, in the above-described embodiment, five blister packs 1 are simultaneously manufactured in the width direction of blister film 35. Alternatively, for example, only two sheets in the width direction of blister film 35 may be manufactured. It is also possible to manufacture one sheet at a time 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 embodiment, the container film 3 is formed of a thermoplastic resin material such as PP or PVC, but not limited to this, for example, the container film 3 may be a resin material such as PET, of course, an aluminum laminate film For example, it may be formed of a metal material whose main material is aluminum.

Moreover, in the said embodiment, although the pattern 4a is printed only on the surface of the cover film 4, it is good also as a structure by which the pattern 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 on which the pattern 4a and the registration mark R were printed beforehand is used, a printing mechanism is provided not only in this but in the blister packaging machine 10, A cover film by this printing mechanism. It is good also as composition which prints pattern 4a, register mark R, etc. to 4.

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

Further, the gripping mechanism 51 according to the above embodiment is configured of a gripping roller 55 on which the cover film 4 is hooked and a film clamp 56 provided so as to be capable of being in pressure contact with 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 drawing roller 60 is displaced by the servomotor 62. The displacement amount of the drawing roller 60 is not limited to this, for example, by making the drawing roller 60 displaceable until it is regulated by a fluid pressure cylinder or the like to a predetermined stopper member, and making the position of the stopper member variable. May be adjustable. Also, the displacement member is not limited to the drawing 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 disposed between the guide roller 63 and the feed roller 15. The present invention is not limited to this, and may be disposed at another different position such as the downstream side of the feed roller 15. In terms of improving the alignment accuracy of the registration marks R, it is preferable that the sealing device 16 be disposed closer to the sealing device 16.

Further, the mark sensor 53 may be configured to be adjustable in position in the conveyance direction of the cover film 4.

(F) In the above embodiment, when calculating the displacement amount for displacing the drawing roller 60, the required displacement amount of the drawing roller 60 according to the positional deviation amount of the registration mark R (move the registration mark R to the detection position K A displacement amount (target displacement amount) is calculated by adding a predetermined amount to the displacement amount of the drawing roller 60 which is the minimum necessary to do so.

The present invention is not limited to this, and the necessary displacement of the stretching roller 60 according to the positional shift amount of the registration mark R may be a displacement 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: gripping 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: printing pitch of registration mark, P2: single conveyance amount of container film (formation pitch of blister pack), R: registration mark.

Claims

Conveying means for intermittently conveying a belt-like container film in which the contained object is accommodated in the pocket portion by a predetermined amount;
And b) an attachment means for attaching a strip-like 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 position at predetermined intervals shorter than a single conveyance amount of the container film;
Mark displacement amount grasping means capable of grasping the positional displacement amount between the mark and the detection position when conveyance of the cover film is stopped based on the detection result of the mark detection means;
Stretching means having a displaceable displacement member, which is capable of stretching the cover film by the displacement member;
Displacement amount calculation means for calculating a displacement amount for displacing the displacement member based on the displacement amount of the mark grasped by the mark displacement amount grasping device;
Stretching control means for performing displacement control of the displacement member based on the displacement amount calculated by the displacement amount calculation means;
And a stop control means capable of stopping displacement control of the displacement member by the extension control means when the mark detection means detects the mark at the detection position during the extension of the cover film. Characterized blister packaging machine.
The displacement amount calculation means
An amount obtained by adding a predetermined amount to a required displacement amount of the displacement member according to the displacement amount of the mark grasped by the mark displacement amount grasping means is calculated as the displacement amount. Blister packing machine as described.
The stop control means is
When the mark detection means detects an end of the mark on the one side in the film transport direction at the detection position, displacement control of the displacement member by the extension 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 a gripping means capable of gripping the cover film at least on the upstream side 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 adjustable in position with respect to the transport direction of the cover film.