JP2023140774A - blister packaging machine - Google Patents

Abstract

To provide a blister packaging machine capable of surely preventing a blister film from being caught by a device for punching the blister film.SOLUTION: A PTP packaging machine that guides a scrap part 7 between a sheet punching reception part 521 and a scrap cutting reception part 522 so as to pass through a passage of approaching a scrap cutting blade 513 comprises a film guide part 523 capable of floating a PTP film 6 from a downstream side edge part 5213a located on a conveyance direction downstream side of the PTP film 6 out of an edge part 5213 corresponding to a punching hole 5211 at the sheet punching reception part 521. Thus, the PTP film 6 is effectively prevented from being caught by the downstream side edge part 5213a where there is a concern specifically of the PTP film 6 being caught. Further, the PTP film 6 can be more surely prevented from being caught by the sheet punching reception part 521 (device for punching the PTP film 6).SELECTED DRAWING: Figure 10

Description

The present invention relates to a blister packaging machine for manufacturing blister sheets containing contents such as tablets.

PTP (Press Through Pack) sheets are known as blister sheets that are generally used in the fields of pharmaceuticals, foodstuffs, and the like. The PTP sheet includes a container film having a pocket portion in which contents such as tablets are accommodated, and a cover film attached to the container film so as to seal the opening side of the pocket portion.

PTP sheets are manufactured using a PTP packaging machine, which is a type of blister packaging machine. The PTP packaging machine includes a pocket forming means, a filling means, a sealing means, a punching means, and the like. The pocket forming means forms a pocket in the band-shaped container film. The filling means fills the pocket portion with contents. The sealing means attaches the cover film to the container film so as to close the opening of the pocket portion. The punching means punches out a belt-shaped PTP film in which a cover film is attached to a container film. A PTP sheet is obtained by punching the PTP film.

Further, a scrap portion (for example, an unnecessary portion remaining after punching), which is a portion of the PTP film located downstream of the punching device, is cut by a predetermined scrap cutting device. In recent years, an apparatus that integrally includes a punching means and a scrap cutting means has been proposed (see, for example, Patent Document 1).

The device according to Patent Document 1 includes a sheet punching cutter, and a sheet punching cutter that is disposed downstream of the sheet punching cutter in the conveyance direction of the PTP film, and that protrudes sufficiently toward the PTP film side than the sheet punching cutter. a head having a scrap cutting cutter, and a base having a punching hole (opening) through which a sheet punching cutter can be inserted, and a base disposed at a position to sandwich a PTP film between the head and the head. . By adjusting the amount of movement of the head toward the base side, this device allows you to choose between punching the PTP film and cutting the scrap portion, or cutting only the scrap portion without punching the PTP film. It is possible to do so.

More specifically, by moving the head so that the sheet punching cutter is inserted into the punching hole, the PTP film is punched out by the sheet punching cutter, and the scrap portion is cut by the scrap cutting cutter. Ru. On the other hand, by moving the head to a position where the punching cutter is not inserted into the punching hole and the scrap cutting cutter pierces the PTP film, the scrap portion is cut without punching the PTP film. only is done.

International Publication No. 2021/225112

By the way, in the above apparatus, as shown in FIG. 16 (for convenience of illustration, the PTP film 6 is shown thicker than it actually is in FIG. 16), the PTP film 6 is conveyed along the surface of the base 101. Therefore, as shown in FIG. 17, among the portions of the PTP film 6 (scrap portion 7) that form the holes 8 (holes corresponding to the PTP sheet 1), particularly the portions facing forward in the traveling direction, the base 101 is struck. Among the edge portions corresponding to the punch holes 102, there is a possibility that the downstream edge portion 103 located on the downstream side in the transport direction of the PTP film 6 may be caught. If such a catch occurs, manufacturing of the PTP sheet 1 may be hindered.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a blister packaging machine that can more reliably prevent a blister film from getting caught in a blister film punching device.

In the following, each means suitable for solving the above object will be explained in terms of sections. Note that effects specific to the corresponding means will be added as necessary.

Means 1. A blister sheet is manufactured by punching out a band-shaped blister film in sheet units, which is formed by attaching a band-shaped cover film to a band-shaped container film in which contents are stored in a pocket portion so as to close the pocket portion. A blister packaging machine,
a conveyance means for intermittently conveying the blister film;
sheet cutting means for cutting the temporarily stopped blister film,
The sheet cutting means includes a first component and a second component provided at positions sandwiching the blister film,
The first component is
a sheet punching blade having a blade portion having a shape corresponding to the outer edge shape of the blister sheet;
a scrap cutting blade provided downstream of the sheet punching blade in the conveying direction of the blister film;
The second component includes:
a sheet punching receiving part configured to transport the blister film along a flat surface, having a shape corresponding to the outer edge shape of the blister sheet, and having a punching hole opened in the surface;
a scrap cutting receiving section provided downstream of the sheet punching receiving section in the conveying direction;
The first component moves from the retracted position where the sheet punching blade and the scrap cutting blade are separated from the blister film to a predetermined cutting position, so that the sheet punching blade closes the punching hole. The blister film is punched out by the sheet punching blade and the sheet punching receiving part, and the scrap part of the blister film located downstream of the sheet punching blade in the conveying direction is while being configured to be cut by a scrap cutting blade and the scrap cutting receiver;
By moving the first component from the retracted position to the predetermined one-way cutting position, the scrap part is cut by the scrap cutting blade and the scrap cutting receiver without punching out the blister film. It is configured as follows,
Between the sheet punching receiving part and the scrap cutting receiving part in the second component, the scrap part is guided to pass through a path approaching the scrap cutting blade, and at least the first component is provided. a state in which the blister film is floated from a downstream edge portion located on the downstream side in the conveying direction among the edge portions of the sheet punching receiving portion corresponding to the punching holes in the state in which the sheet punching receiving portion is located at the retracted position; A guide means is provided that allows the
A portion of the scrap cutting receiving portion that cuts the scrap portion in cooperation with at least the scrap cutting blade is located further along the moving direction of the first component than the surface of the sheet punching receiving portion. A blister packaging machine characterized by a protruding scrap cutting blade.

According to the above means 1, the guide means guides the scrap portion along a path approaching the scrap cutting blade, and in a state where at least the first component is disposed in the retracted position, the sheet punching receiver The blister film is in a floating (separated) state from the downstream edge of the section. Therefore, the blister film can be conveyed in a state where it is floating from the downstream edge portion. Therefore, it is possible to effectively prevent the blister film from getting caught on the downstream edge, where there is a particular concern about the blister film getting caught, and prevent the blister film from getting caught on the sheet punch receiving section (device for punching out the blister film). can be more reliably prevented. Thereby, the blister film can be conveyed more smoothly, and the operational stability of the apparatus can be improved.

Further, a portion of the scrap cutting receiving portion that cuts the scrap portion in cooperation with the scrap cutting blade protrudes from the surface of the sheet punching receiving portion toward the scrap cutting blade side. Therefore, even if the first component is configured such that the scrap cutting blade does not protrude too much or not at all from the sheet punching blade along the direction of movement of the first component, the first component may be in one cutting position (only the scrap portion It is possible to more reliably prevent the sheet punching blade from coming into contact with the blister film when the sheet punching blade is placed in the position for cutting the blister film. As a result, only the scrap portion can be stably cut by moving the first component to one cutting position while reducing the size of the first component. Moreover, the degree of freedom in design regarding the positional relationship between the scrap cutting blade and the sheet punching blade can be further increased.

Means 2. The first component has a holding part capable of sandwiching the blister film between it and the surface of the sheet punching receiving part, and is equipped with a predetermined buffering means,
When the first component is moved from the retracted position to the both cutting positions, the blister film is The blister packaging machine according to means 1, wherein the blister film is sandwiched, and after the blister film is sandwiched, the buffer means does not inhibit the movement of the first component to the cutting position.

According to the above means 2, when the first component moves from the retracted position to the both-cutting position in order to punch out the blister film, before the sheet punching blade comes into contact with the blister film (both reach the cutting position). (front), the blister film is sandwiched between the surface of the sheet punching receiving part and the pressing part. As a result, the blister film that has been lifted off the surface of the sheet punching receiving section by the guide means comes into contact with the surface of the sheet punching receiving section. Then, in this state, both of the first components move to the cutting position, whereby the blister film is punched out. Therefore, compared to the case where the blister film is punched out while it is floating above the surface of the sheet punching receiving part, it is possible to more reliably prevent the punching position from shifting. As a result, the product quality of the resulting blister sheet can be improved.

Further, while the blister film can be pinched by the holding part etc. before the sheet punching blade comes into contact with the blister film, the buffering means of the holding part can allow further movement of the first component after the pinching. can.

Means 3. When the first component is moved from the retracted position to the both cutting positions, the scrap part is cut by the scrap cutting blade and the scrap cutting receiving part before the holding part comes into contact with the blister film. The blister packaging machine according to means 2, characterized in that it is configured to:

According to the above means 3, when cutting the scrap portion, no force is applied from the pressing portion to the first component in a direction that hinders its movement. Therefore, it is possible to suppress an increase in the load (moment force, etc.) applied to the drive means (eg, motor, etc.) for moving the first component.

In addition, when the first component is moved from the retracted position to the both cutting positions, the scrap is The scrap cutting blade and the scrap cutting receiving part may be configured to cut the scrap cutting blade and the scrap cutting receiving part. Also in this configuration, it is possible to suppress an increase in the load applied to the drive means for moving the first component.

Means 4. Means 1 to 3, wherein the scrap cutting blade is configured so as not to protrude further toward the scrap cutting receiver than the sheet punching blade along the moving direction of the first component. The blister packaging machine described in any of the above.

According to the above means 4, the size of the first component along the moving direction can be made smaller. This makes it possible to more reliably downsize the device. Further, increase in various costs can be suppressed more effectively.

Means 5. 5. The blister packaging machine according to any one of means 1 to 4, wherein the guide means is an inclined surface that guides the scrap part as the scrap part slides.

According to the above means 5, since the guide means is a mere inclined surface, the structure of the guide means can be simplified. This makes it possible to more effectively suppress increases in various costs.

Means 6. The blister according to means 5, wherein an angle θ1 of a smaller angle of the angles formed by the inclined surface with respect to a virtual plane including the surface of the sheet punching receiving portion is 10° or more and 20° or less. packaging machine.

According to the above means 6, since the angle θ1 is 10° or more, the blister film can be more reliably lifted from the downstream edge portion.

On the other hand, since the angle θ1 is set to 20° or less, it is possible to more reliably prevent the amount of protrusion (height) of the scrap cutting receiving part from becoming excessively large with respect to the surface (virtual plane) of the sheet punching receiving part. can. Therefore, compared to the stroke amount of the first component when moving from the retracted position to the one cutting position, the stroke amount of the first component when moving from the retracted position to the both cutting positions increases extremely. can be more reliably prevented. Thereby, it is possible to more effectively reduce the size of the device, and it is also possible to more effectively suppress an increase in the load applied to the drive means (for example, a motor) for moving the first component.

Means 7. In a cross section that is perpendicular to the imaginary plane including the surface of the sheet punching receiving part, parallel to the conveying direction of the blister film, and passing through the downstream edge part, the blister film is The angle θ2 of the smaller angle formed by a virtual line drawn from the most downstream part of the inclined surface along the conveyance direction to the downstream edge part is 5° or more and 20° or less. The blister packaging machine according to means 5 or 6.

According to the above means 7, since the angle θ2 is 5° or more, the blister film can be more reliably lifted from the downstream edge portion.

On the other hand, since the angle θ2 is set to 20 degrees or less, it is possible to more reliably prevent the amount of protrusion (height) of the scrap cutting receiving part from becoming excessively large with respect to the surface (virtual plane) of the sheet punching receiving part. can. Thereby, the stroke amount of the first component when moving from the retracted position to both cutting positions can be made relatively small. Therefore, it is possible to more reliably downsize the device, and it is also possible to more effectively suppress an increase in the load applied to the drive means (for example, a motor) for moving the first component.

Means 8. Any one of means 5 to 7, characterized in that a height H of the scrap cutting receiving part with respect to the surface of the sheet punching receiving part along the moving direction of the first component is 3 mm or more and 8 mm or less. Blister packaging machine described in.

According to the above means 8, since the height H is set to 3 mm or more, the blister film can be more reliably lifted from the downstream edge portion.

On the other hand, since the height H is 8 mm or less, as a result, the stroke amount of the first component when moving from the retracted position to both cutting positions can be made relatively small. Thereby, the device can be made smaller more reliably. Further, it is possible to more effectively suppress an increase in the load applied to the drive means (for example, a motor, etc.) for moving the first component.

Means 9. 9. The blister packaging machine according to any one of means 1 to 8, wherein the surface of the sheet punch receiving portion is a horizontal flat surface.

When the surface of the sheet punching receiver is a horizontal flat surface as in the above means 9, the blister film conveyed along this horizontal flat surface loosens toward the sheet punching receiver due to its own weight. It may become easier. Therefore, there is a possibility that the blister film is more likely to get caught on the downstream edge portion.

In this regard, by employing the above-mentioned means 1 and the like, even in a structure where the blister film is likely to get caught like the above-mentioned means 9, it is possible to more reliably prevent the blister film from getting caught. In other words, the above means 1 etc. can be said to be particularly effective in the configuration of the above means 9.

It is a perspective view showing a PTP sheet. It is a partially enlarged sectional view of a PTP sheet. It is a perspective view showing a PTP film. FIG. 1 is a schematic diagram showing a schematic configuration of a PTP packaging machine. FIG. 2 is a schematic perspective view of a sheet cutting device. FIG. 2 is a partially cutaway schematic perspective view of the sheet cutting device in a state where the sheet is cut at the center of the sheet punching blade. FIG. 2 is a partially cutaway schematic perspective view of the sheet cutting device in a state where the sheet cutting device is cut at a position where a holding portion is provided. FIG. 6 is an enlarged sectional view taken along the line JJ in FIG. 5 for explaining the second component. FIG. 2 is a schematic perspective view showing the sheet cutting device and the like with the first component disposed at the retracted position before cutting the PTP film. FIG. 2 is a schematic front view showing the sheet cutting device and the like with the first component placed in the retracted position before cutting the PTP film. FIG. 3 is a schematic front view of the sheet cutting device and the like in a state where the first component is disposed at one cutting position. FIG. 2 is a schematic front view of a sheet cutting device, etc., showing a state in which a PTP film is sandwiched between holding parts and the like. FIG. 2 is a schematic perspective view of the sheet cutting device and the like in a state where both first constituent parts are arranged at cutting positions. FIG. 3 is a schematic front view of the sheet cutting device and the like in a state where both first constituent parts are arranged at cutting positions. FIG. 3 is a schematic perspective view of the sheet cutting device and the like in a state where the first component has returned to the retracted position. FIG. 1 is a schematic front view of a device according to the prior art. FIG. 2 is a schematic perspective view for explaining how a PTP film gets caught on a downstream edge portion in the prior art.

An embodiment will be described below with reference to the drawings. First, the structure of a PTP sheet as a "blister sheet" will be explained.

As shown in FIGS. 1 and 2, the PTP sheet 1 includes a container film 3 having a plurality of pockets 2, and a cover film 4 attached to the container film 3 so as to close the pockets 2. ing.

The container film 3 in this embodiment is made of a transparent thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride), and has translucency. On the other hand, the cover film 4 is made of an opaque material (for example, aluminum foil, etc.) on the surface of which a sealant made of, for example, polypropylene resin or the like is provided. Of course, the materials for each of the films 3 and 4 are not limited to these, and other materials may be used.

The PTP sheet 1 is manufactured by punching a belt-shaped PTP film 6 (see FIG. 3) formed from a belt-shaped container film 3 and a belt-shaped cover film 4 into a sheet shape, and is approximately rectangular in plan view. formed into a shape. In this embodiment, the PTP film 6 constitutes a "blister film". The PTP film 6 has a structure in which the portions that will become the PTP sheet 1 are lined up continuously along the longitudinal direction without gaps.

In the PTP sheet 1, two rows of pockets each consisting of two pocket portions 2 arranged along the longitudinal direction are formed in two rows in the transverse direction. That is, a total of four pocket portions 2 are formed. Each pocket part 2 accommodates one tablet 5 as "contents".

Next, a schematic configuration of the PTP packaging machine 10 for manufacturing the above-mentioned PTP sheet 1 will be explained. In this embodiment, the PTP packaging machine 10 constitutes a "blister packaging machine".

As shown in FIG. 4, on the most upstream side of the PTP packaging machine 10, the original fabric of the strip-shaped container film 3 is wound into a roll. The drawn-out end side of the container film 3 wound into a roll is guided by a guide roll 13. The container film 3 is hung on an intermittent feed roll 14 on the downstream side of the guide roll 13. The intermittent feed roll 14 is connected to a motor that rotates intermittently, and conveys the container film 3 intermittently.

A heating device 15 and a pocket forming device 16 are sequentially disposed between the guide roll 13 and the intermittent feed roll 14 along the conveyance path of the container film 3. Then, in a state where the container film 3 is heated by the heating device 15 and becomes relatively flexible, a plurality of pocket portions 2 are formed at predetermined positions of the container film 3 by the pocket portion forming device 16. The pocket portion 2 is formed during an interval between the conveyance operations of the container film 3 by the intermittent feed roll 14.

The container film 3 sent out from the intermittent feed roll 14 is hung over a tension roll 18, a guide roll 19, and a film receiving roll 20 in this order. Since the film receiving roll 20 is connected to a motor that rotates at a constant rate, it conveys the container film 3 continuously at a constant speed. The tension roll 18 is in a state in which the container film 3 is pulled to the tension side by elastic force, and prevents the container film 3 from loosening due to the difference in conveying operation between the intermittent feed roll 14 and the film receiving roll 20, and tightens the container film 3. The film 3 is kept under tension at all times.

A filling device 21 and an inspection device 22 are sequentially arranged between the guide roll 19 and the film receiving roll 20 along the conveyance path of the container film 3.

The filling device 21 fills each pocket portion 2 with tablets 5 by, for example, opening a shutter at predetermined intervals to allow the tablets 5 to fall freely.

The inspection device 22 inspects, for example, whether the tablet 5 is reliably filled in each pocket 2, whether there is any abnormality in the tablet 5, whether foreign matter has entered the pocket 2, and the like. The inspection results by the inspection device 22 are sent to a control device 61, which will be described later.

On the other hand, the original fabric of the cover film 4 formed into a band shape is wound into a roll shape on the most upstream side. The drawn-out end of the cover film 4 wound into a roll is guided toward a heating roll 25 by a guide roll 24 .

The heating roll 25 can be brought into pressure contact with the film receiving roll 20, so that the container film 3 and the cover film 4 are fed between both rolls 20 and 25. Then, the container film 3 and the cover film 4 pass between the rolls 20 and 25 in a heated and pressurized state, so that the cover film 4 is attached to the container film 3 and the pocket portion 2 is closed with the cover film 4. . As a result, a strip-shaped PTP film 6 in which a tablet 5 is housed in each pocket portion 2 is manufactured.

The PTP film 6 sent out from the film receiving roll 20 is hung on a tension roll 27 and an intermittent feed roll 28 in this order. Since the intermittent feed roll 28 is connected to a motor that rotates intermittently, the PTP film 6 is intermittently conveyed. The tension roll 27 is in a state where the PTP film 6 is pulled to the tension side by elastic force, and prevents the PTP film 6 from loosening due to the difference in conveyance operation between the film receiving roll 20 and the intermittent feed roll 28. The PTP film 6 is kept under tension at all times.

The PTP film 6 sent out from the intermittent feed roll 28 is hung on a tension roll 31 and an intermittent feed roll 32 in this order. Since the intermittent feed roll 32 is connected to a motor that rotates intermittently, the PTP film 6 is intermittently conveyed. The tension roll 31 is in a state where the PTP film 6 is pulled toward the tension side by elastic force, and prevents the PTP film 6 from loosening between the intermittent feed rolls 28 and 32. In this embodiment, the intermittent feed roll 32 constitutes a "conveying means".

Between the intermittent feed roll 28 and the tension roll 31, a slit forming device 33 and a marking device 34 are arranged in this order along the conveyance path of the PTP film 6. The slit forming device 33 has a function of forming a separation slit at a predetermined position of the PTP film 6. The marking device 34 has a function of marking a predetermined position (for example, a tag portion) of the PTP film 6. Note that in FIG. 1 and the like, illustrations of the separation slit and the markings are omitted.

The PTP film 6 sent out from the intermittent feed roll 32 is sent to a sheet cutting device 37. In this embodiment, the sheet cutting device 37 constitutes a "sheet cutting means". The sheet cutting device 37 punches out the outer edge of the PTP film 6 in units of PTP sheets during intervals between the conveyance operations of the PTP film 6 by the intermittent conveyance roll 32 and when the PTP film 6 is temporarily stopped. and a function of cutting a scrap portion 7, which will be described later.

The PTP sheet 1 obtained by punching the PTP film 6 by the sheet cutting device 37 is conveyed by the conveyor 39 and stored in the finished product hopper 40. On the other hand, the scrap portion 7 cut by the sheet cutting device 37 is stored in the scrap hopper 43 and then disposed of separately. Note that when the inspection device 22 determines that the PTP sheet 1 is defective, the portion of the PTP film 6 that corresponds to the PTP sheet 1 that is determined to be defective is not punched out but becomes a scrap portion 7 and is cut by the sheet cutting device 37. .

Next, the sheet cutting device 37 will be explained in more detail. The sheet cutting device 37 includes a first component 51 and a second component 52 that are provided at positions that vertically sandwich the PTP film 6 (transport route of the PTP film 6).

The first component 51 is installed above the PTP film 6, and includes a base 511, a sheet punching blade 512, a scrap cutting blade 513, and a holding part 514, as shown in FIGS. On the other hand, the second component 52 is installed below the PTP film 6 and includes a sheet punching receiving section 521, a scrap cutting receiving section 522, and a film guide section 523. In this embodiment, the film guide section 523 constitutes "guiding means".

First, the first component 51 will be explained. The base 511 is a base on which a sheet punching blade 512, a scrap cutting blade 513, and the like are installed. The base 511 is configured to be able to reciprocate in the vertical direction by a predetermined driving means (for example, a motor, etc.) not shown.

Furthermore, the base 511 is provided with a hole 511a (see FIG. 7) that opens toward the PTP film 6 side and into which the holding portion 514 is inserted. The hole portion 511a is located at a position opposite to a surface of the surface 5212 (the surface facing the PTP film 6 side) of the sheet punching receiving portion 521 that is located downstream of the punching hole 5211 in the transport direction of the PTP film 6, which will be described later. There are places set up. These two hole portions 511a are located at positions opposite to the edge side portions in the width direction of the PTP film 6 (that is, the portions of the PTP film 6 that will remain after punching).

In addition, as the base 511 moves, the first component 51 reciprocates up and down, and the first component 51 can move from a predetermined retracted position to a predetermined cutting position. Further, it is also possible to move from the retracted position to a predetermined one-way cutting position.

Here, the "retreat position" refers to a position where the sheet punching blade 512, the scrap cutting blade 513, and the holding part 514 are spaced apart from the PTP film 6. On the other hand, "both cutting positions" means that the sheet punching blade 512 is inserted into the punching hole 5211 described later, and the tip (lower end) of the scrap cutting blade 513 exceeds (the conveyance path of) the PTP film 6. The position where In addition, "one cutting position" refers to a position where the sheet punching blade 512 is not inserted into the punching hole 5211 and the tip of the scrap cutting blade 513 exceeds (the conveyance path of) the PTP film 6.

The sheet punching blade 512 is for punching out the PTP film 6 in cooperation with the sheet punching receiving section 521. A sharp-pointed blade portion 512a (see FIG. 6) having a shape corresponding to the outer edge shape of the PTP sheet 1 is provided at the tip of the sheet punching blade 512 (the end on the PTP film 6 side).

The scrap cutting blade 513 is for cutting the scrap part 7 in cooperation with the scrap cutting receiving part 522. The scrap cutting blade 513 is provided downstream of the sheet punching blade 512 in the conveying direction of the PTP film 6.

Note that the scrap portion 7 refers to a portion of the PTP film 6 that is located downstream of the sheet punching blade 512 in the conveying direction of the PTP film 6. Therefore, the scrap portion 7 basically refers to the portion of the PTP film 6 that remains after being punched by the sheet punching blade 512 or the like, but the scrap portion 7 is the portion of the PTP film 6 that remains after being punched by the sheet punching blade 512 or the like. The portion transported further downstream in the transport direction is also included in the scrap portion 7.

Further, the scrap cutting blade 513 is configured so as not to protrude further toward the scrap cutting receiver 522 than the sheet punching blade 512 along the moving direction of the first component 51 (see FIG. 10). In this embodiment, the tip (lower end) of the scrap cutting blade 513 and the tip (lower end) of the sheet punching blade 512 are arranged at the same height position along the moving direction of the first component 51. ing. Note that the scrap cutting blade 513 may be configured to be retracted further away from the scrap cutting receiver 522 than the sheet punching blade 512 along the moving direction of the first component 51. Further, the scrap cutting blade 513 may be configured to protrude slightly toward the scrap cutting receiver 522 side than the sheet punching blade 512 along the moving direction of the first component 51.

The holding portion 514 is for holding the PTP film 6 between it and the surface 5212 of the sheet punching receiving portion 521 when cutting the PTP film 6. In this embodiment, two holding parts 514 are provided, and each holding part 514 is installed in the hole 511a, respectively. Each holding portion 514 includes a spring 514a and a holding pin 514b (see FIG. 7). In this embodiment, the spring 514a constitutes a "buffer means."

The spring 514a is constituted by a coil spring that can be elastically deformed along the moving direction of the first component 51, and is inserted into the hole 511a. The spring 514a is fixed between the base 511 and the holding pin 514b. Thereby, the holding portion 514 can be elastically deformed along the moving direction of the first component 51.

The holding pin 514b is a rod-shaped component whose tip end surface (lower end surface) is flat and whose base end portion (upper end portion) is inserted into the hole 511a. The movement of the holding pin 514b is guided by the base 511 (particularly the portion forming the hole 511a) when the spring 514a is elastically deformed. In addition, by configuring the hole portion 511a as described above, the holding pin 514b is provided at a position corresponding to the conveyance path of the edge side portion in the width direction of the PTP film 6, and the tip end surface of the holding pin 514b is is opposed to a surface of the surface 5212 of the sheet punching receiving portion 521 located downstream of the punching hole 5211, which will be described later, in the conveying direction.

In addition, the tip end surface of the holding pin 514b protrudes toward the sheet punching receiver 521 side than the sheet punching blade 512 along the moving direction of the first component 51. As a result, when the first component 51 moves toward the second component 52, the tip end surface of the presser pin 514b comes into contact with the PTP film 6 before the sheet punching blade 512 comes into contact with the PTP film 6.

In addition, in a state where the first component 51 is disposed at the retracted position, the distance from the tip surface of the presser pin 514b to the conveyance path of the PTP film 6 along the moving direction of the first component 51 is as follows: It is configured to be sufficiently larger than the distance from the scrap cutting blade 513 to the scrap cutting receiving part 522 (especially the scrap receiving blade 522a described later) along the same moving direction. As a result, when the first component 51 moves toward the second component 52, the scrap portion 7 is Can be cut.

Next, the second component 52 will be explained. The sheet punching receiving part 521 is disposed at a position facing the sheet punching blade 512 with the PTP film 6 in between, and is provided with a punching hole 5211 having a shape corresponding to the outer edge shape of the PTP sheet 1. The punching hole 5211 is open at the surface 5212 (the surface located on the PTP film 6 side) of the sheet punching receiving portion 521. In this embodiment, the surface 5212 of the sheet punching receiving part 521 is a horizontal flat surface, and the PTP film 6 is conveyed along this surface 5212 in a substantially horizontal direction by the intermittent feed roll 32. It has become.

Further, the sheet punching receiving portion 521 has an edge portion 5213 corresponding to the punching hole 5211 on the surface 5212 side. The edge portion 5213 has a rectangular shape corresponding to the outer edge shape of the PTP sheet 1. In this embodiment, the edge portion 5213 has a downstream edge portion 5213a that is located on the downstream side in the conveyance direction and extends in a direction intersecting the conveyance direction of the PTP film 6 when the PTP film 6 is viewed from above. There is.

The scrap cutting receiving part 522 is provided on the downstream side of the sheet punching receiving part 521 in the conveyance direction, and has a scrap receiving blade 522a which is a part that cuts the scrap part 7 in cooperation with the scrap cutting blade 513. We are prepared. In this embodiment, the scrap receiving blade 522a has an end surface of the scrap cutting receiving section 522 on the most downstream side in the transport direction (a surface parallel to the moving direction of the first component 51) and a surface of the scrap cutting receiving section 522 (a surface of the PTP film 6) and has an angular shape. Note that the scrap receiving blade 522a may have a sharp shape toward the PTP film 6 side.

Further, the scrap cutting receiving part 522 is configured such that at least the scrap receiving blade 522a protrudes toward the scrap cutting blade 513 side from the surface 5212 of the sheet punching receiving part 521 along the moving direction of the first component 51. ing. In this embodiment, the height H (see FIG. 8) of the scrap cutting receiving part 522 with respect to the surface 5212 of the sheet punching receiving part 521 along the moving direction of the first component 51 is set to be 3 mm or more and 8 mm or less. There is. Note that in FIG. 8, some hatching is omitted for convenience of illustration.

The film guide section 523 is provided between the sheet punching receiving section 521 and the scrap cutting receiving section 522, and guides the scrap section 7 along a path approaching the scrap cutting blade 513. In this embodiment, the film guide section 523 is constituted by an inclined surface 523a that is continuous with the surface 5212 of the sheet punch receiving section 521 and guides the scrap section 7 as the scrap section 7 slides thereon.

In addition, as shown in FIG. 8, the angle θ1 of the smaller of the angles formed by the inclined surface 523a with respect to the virtual surface VS including the surface 5212 is 10° or more and 20° or less (more preferably 10° or more). 15° or less).

Further, in a cross section that is perpendicular to the virtual plane VS, parallel to the conveying direction of the PTP film 6, and passing through the downstream edge portion 5213a, the most downstream part of the inclined surface 523a along the conveying direction of the PTP film 6. Assume that a virtual line VL is drawn from Mp to the downstream edge portion 5213a. At this time, the angle θ2 of the smaller of the angles formed by the virtual line VL with respect to the virtual plane VS is set to be 5° or more and 20° or less (more preferably 5° or more and 15° or less). . Incidentally, for convenience of illustration, the angles θ1 and θ2 are shown as angles larger than the above-mentioned ranges in the drawings.

In addition, in the present embodiment, the PTP packaging machine 10 includes a control device 61 (see FIG. ). The control device 61 is constituted by a computer system including a CPU for calculation, ROM, RAM, etc. for data storage.

The control device 61 controls the operation of the sheet cutting device 37 so that the first component 51 is placed in the retracted position when the PTP film 6 is conveyed by the intermittent feed roll 32. On the other hand, the control device 61 determines that the portion of the PTP film 6 that is to be punched by the sheet cutting device 37 (sheet punching blade 512, etc.) (the portion that will become the PTP sheet 1) is cut by the sheet punching blade 512 and the sheet punching When the receiving section 521 is temporarily stopped (see FIGS. 9 and 10), the operation of the first component 51 is controlled so as to perform an operation corresponding to the test result sent from the test device 22.

More specifically, when the inspection device 22 determines that the portion of the PTP film 6 to be punched by the sheet cutting device 37 is defective, the control device 61 moves from the retracted position to the one cutting position. The operation of the first component 51 is controlled so that the first component 51 moves to (see FIG. 11). Thereby, the scrap part 7 is cut by the scrap cutting blade 513 and the scrap cutting receiving part 522 (scrap receiving blade 522a) without punching out the PTP film 6. Thereafter, the control device 61 controls the operation of the first component 51 to move back to the retracted position.

On the other hand, if the inspection device 22 determines that the portion of the PTP film 6 that is to be punched by the sheet cutting device 37 is good, the control device 61 moves from the retracted position to both cutting positions. The operation of the first component 51 is controlled to move. At this time, the first component 51 first reaches the one cutting position, so that the scrap portion 7 is cut by the scrap cutting blade 513 and the scrap cutting receiving portion 522 before the pressing portion 514 comes into contact with the PTP film 6. (See Figure 11).

Thereafter, as the first component 51 further moves toward the second component 52, the presser portion 514 (presser pin 514b) and the sheet puncher receiving portion PTP film 6 is sandwiched between surfaces 5212 of 521 (see FIG. 12). As a result, the PTP film 6, which had been floating above the surface 5212 due to the film guide portion 523, comes into contact with the surface 5212 located around the punched hole 5211.

Then, the first component 51 further moves toward the second component 52 and reaches both of the cutting positions, so that the sheet punching blade 512 (blade portion 512a) is inserted into the punching hole 5211. The PTP film 6 is punched out by the sheet punching blade 512 and the sheet punching receiver 521 (see FIGS. 13 and 14). Note that after the PTP film 6 is pinched by the holding portions 514 and the like, the spring 514a is elastically deformed, so that the movement of the first component 51 toward both of the cutting positions is not inhibited.

Thereafter, the control device 61 controls the operation of the first component 51 to move back to the retracted position. As the first component 51 moves to the retracted position, the presser part 514 separates from the PTP film 6, and the PTP film 6 returns to a state floating from at least the downstream edge part 5213a (see FIG. 15). Then, the control device 61 controls the operation of the intermittent feed roll 32 so that the PTP film 6 is conveyed by a certain amount. At this time, the PTP film 6 is conveyed in a floating state at least from the downstream edge portion 5213a.

Thereafter, each time the PTP film 6 is temporarily stopped, the first component 51 is controlled to perform an operation corresponding to the inspection result by the inspection device 22, and as a result, the PTP film 6 is scrapped without being punched. It is possible to selectively cut only the portion 7 or to punch out the PTP film 6 and cut the scrap portion 7 at the same time. Then, each time the scrap portion 7 is cut or the PTP film 6 is punched out, the PTP film 6 is transported a certain amount while floating from the downstream edge portion 5213a.

As described in detail above, according to the present embodiment, the PTP film 6 is lifted from the downstream edge portion 5213a by the film guide portion 523 at least when the first component 51 is disposed at the retracted position. (separated) state. Therefore, the PTP film 6 can be conveyed while floating from the downstream edge portion 5213a. Therefore, it is possible to effectively suppress the PTP film 6 from being caught on the downstream edge portion 5213a, where there is a particular concern that the PTP film 6 may be caught, and more reliably prevent the PTP film 6 from getting caught on the sheet punch receiving portion 521. can be prevented. Thereby, the PTP film 6 can be conveyed more smoothly, and the operational stability of the PTP packaging machine 10 can be improved.

In addition, particularly in this embodiment, the downstream edge portion 5213a of the corner corresponding portion 9 (see FIG. 15) corresponding to the outer edge corner of the PTP sheet 1 that remains after punching, particularly the portion facing forward in the traveling direction. However, according to this embodiment, it is possible to more reliably prevent the corner corresponding portion 9 from getting caught on the downstream edge portion 5213a.

In addition, the part of the scrap cutting receiving part 522 that cooperates with the scrap cutting blade 513 to cut the scrap part 7 (the scrap receiving blade 522a) is closer to the scrap cutting blade 513 than the surface 5212 of the sheet punching receiving part 521. protrudes to the side. Therefore, even if the first component 51 is configured so that the scrap cutting blade 513 does not protrude from the sheet punching blade 512 along the moving direction of the first component 51, the first component 51 is at one cutting position (scrap When the sheet punching blade 512 is placed in the position (position for cutting only the portion 7), it is possible to more reliably prevent the sheet punching blade 512 from coming into contact with the PTP film 6. Thereby, only the scrap portion 7 can be stably cut by moving the first component 51 to one cutting position while reducing the size of the first component 51. Moreover, the degree of freedom in design regarding the positional relationship between the scrap cutting blade 513 and the sheet punching blade 512 can be further increased.

Furthermore, when the first component 51 moves from the retracted position to the both-cutting position in order to punch out the PTP film 6, before the sheet punching blade 512 comes into contact with the PTP film 6 (before reaching the both-cutting position) ), the PTP film 6 is sandwiched between the surface 5212 of the sheet punching receiving part 521 and the pressing part 514. As a result, the PTP film 6 that was floating from the surface 5212 due to the film guide portion 523 comes into contact with the surface 5212. Then, in this state, the PTP film 6 is punched out by moving both the first component parts 51 to the cutting position. Therefore, compared to the case where the PTP film 6 is punched with the PTP film 6 floating above the surface 5212, deviations in the punching position can be more reliably prevented. As a result, the product quality of the resulting PTP sheet 1 can be improved.

In addition, according to the present embodiment, the PTP film 6 can be pinched by the holding part 514 etc. before the sheet punching blade 512 comes into contact with the PTP film 6, and the spring 514a of the holding part 514 makes it possible to hold the PTP film 6 after the pinching. Further movement of the first component 51 can be allowed.

In addition, since the scrap portion 7 is cut by the scrap cutting blade 513 and the scrap cutting receiving portion 522 before the holding portion 514 comes into contact with the PTP film 6, the scrap portion 7 is cut by the scrap cutting blade 513 and the scrap cutting receiving portion 522. No force is applied from the pressing portion 514 in a direction that impedes movement. Therefore, it is possible to suppress an increase in the load (moment force, etc.) applied to the drive means for moving the first component 51.

Further, since the scrap cutting blade 513 is configured not to protrude further toward the scrap cutting receiver 522 than the sheet punching blade 512 along the moving direction of the first component 51, the scrap cutting blade 513 is The size along the moving direction can be made smaller. Thereby, the size of the sheet cutting device 37 can be reduced more reliably. Further, increase in various costs can be suppressed more effectively.

In addition, since the film guide portion 523 is simply an inclined surface 523a, the structure of the film guide portion 523 can be simplified. This makes it possible to more effectively suppress increases in various costs.

Furthermore, by setting the angle θ1 to 10° or more, setting the angle θ2 to 5° or more, or setting the height H to 3mm or more, the PTP film 6 can be more securely removed from the downstream edge portion 5213a. can be floated on.

On the other hand, by setting the angles θ1 and θ2 to 20° or less, or by setting the height H to 8 mm or less, the scrap cutting receiving part 522 is connected to the surface 5212 (virtual plane VS) of the sheet punching receiving part 521. It is possible to more reliably prevent the protrusion amount (height) from becoming excessively large. Therefore, compared to the stroke amount of the first component 51 when moving from the retracted position to the one cutting position, the stroke amount of the first component 51 when moving from the retracted position to the both cutting positions is extremely increased. This can be more reliably prevented. Thereby, the size of the sheet cutting device 37 can be reduced more effectively. Further, it is possible to more effectively suppress an increase in the load applied to the drive means for moving the first component 51.

Note that the technical matter of floating the PTP film 6 from the downstream edge portion 5213a is that, as in this embodiment, the surface 5212 of the sheet punching receiving portion 521 is a horizontal flat surface, and the surface 5212 of the sheet punching receiving portion 521 is a horizontal flat surface. This is particularly effective in a configuration in which the PTP film 6 is transported. This is because, in this configuration, the PTP film 6 tends to loosen toward the sheet punch receiving portion 521 due to its own weight, so that the PTP film 6 is more likely to get caught on the downstream edge portion 5213a.

Note that the present invention is not limited to the content described in the above embodiment, and may be implemented as follows, for example. Of course, other applications and modifications not exemplified below are also possible.

(a) In the above embodiment, the pressing part 514 holds the PTP film 6 between the surface 5212 of the sheet punching receiving part 521 and the surface located downstream of the punching hole 5211 in the transport direction of the PTP film 6. configured to be possible. On the other hand, a surface of the surface 5212 of the sheet punching receiving part 521 that exists at a position sandwiching the punching hole 5211 along the width direction of the PTP film 6, and is farther from the center of the punching hole 5211 in the conveying direction. The holding portion 514 may be configured to sandwich the PTP film 6 between the holding portion 514 and a surface located on the downstream side.

Further, the holding portion 514 does not necessarily need to include the spring 514a and the holding pin 514b. For example, the holding portion may include only a spring 514a, and the PTP film 6 may be held between the springs 514a. Further, as the buffering means, a component (for example, a cushion component made of foamed resin, an air cushion, etc.) that can be elastically deformed along the moving direction of the first component 51 may be used, or a component that can be elastically deformed along the moving direction of the first component 51 may be used. An air cylinder or the like that can be expanded and contracted may also be used. Furthermore, a plate-shaped or rod-shaped component extending in the width direction of the PTP film 6 may be used instead of the holding pin 514b.

(b) In the above embodiment, the film guide section 523 is constituted by the inclined surface 523a, but the film guide section guides the scrap section 7 along a path approaching the scrap cutting blade 513, and As long as it is possible to make the PTP film 6 floating from the side edge portion 5213a, it can be changed as appropriate. Therefore, for example, the film guide portion may be formed of a step portion protruding toward the scrap cutting blade 513 side from the surface 5212 of the sheet punch receiving portion 521, a rotatable roller, or the like. Further, the film guide portion may have a stepped shape, for example.

(c) In the above embodiment, the PTP film 6 is configured to be conveyed in a substantially horizontal direction along the horizontal surface 5212 at the location where the sheet punching receiver 521 is arranged. The conveyance direction of the PTP film 6 at the location where the portion 521 is arranged may be changed as appropriate. For example, the surface of the sheet punch receiving portion may be a flat vertical surface, and the PTP film 6 may be conveyed along the surface in a substantially vertical direction.

(d) The configuration of the PTP sheet 1 mentioned in the above embodiment is an example, and for example, the number, arrangement, etc. of the pocket portions 2 that the PTP sheet 1 has may be changed as appropriate.

(e) In the above embodiment, the PTP film 6 has a configuration in which the pocket portions 2 of the number corresponding to one sheet are arranged along the width direction, but the configuration of the PTP film 6 is limited to this. It is not something that will be done. For example, the PTP film 6 may have a configuration in which a number of pocket portions 2 corresponding to two or more sheets are arranged along the width direction of the PTP film 6.

Further, in the above embodiment, the PTP film 6 has a structure in which the parts that become the PTP sheet 1 are lined up continuously along the longitudinal direction without gaps, but the parts that become the PTP sheet 1 along the longitudinal direction may be arranged at regular intervals.

(f) In the above embodiment, the content is a tablet 5, but the type, shape, etc. of the content are not particularly limited. For example, the content may be food, electronic parts, etc. It may also be configured to be accommodated.

1... PTP sheet (blister sheet), 2... pocket part, 3... container film, 4... cover film, 5... tablet (contents), 6... PTP film (blister film), 7... scrap part, 10... PTP packaging machine (blister packaging machine), 32... intermittent feed roll (transporting means), 37... sheet cutting device (sheet cutting means), 51... first component, 52... second component, 512... sheet punching blade, 513 ... Scrap cutting blade, 514... Pressing part, 514a... Spring (buffering means), 521... Sheet punching receiving part, 522... Scrap cutting receiving part, 523... Film guide part (guiding means), 523a... Inclined surface, 5211... Punching hole, 5212...Surface (of the sheet punching receiving part), 5213...Edge portion, 5213a...Downstream edge portion, VL...Virtual line, VS...Virtual surface.

Means 2. The first component has a holding part that is capable of sandwiching the blister film between the surface of the sheet punching receiving part and is equipped with a predetermined buffering means,
When the first component is moved from the retracted position to the both cutting positions, the blister film is The blister packaging machine according to means 1, wherein the blister film is sandwiched, and after the blister film is sandwiched, the buffer means does not inhibit the movement of the first component to the cutting position.

Claims (9)

A blister sheet is manufactured by punching out a band-shaped blister film in sheet units, which is formed by attaching a band-shaped cover film to a band-shaped container film in which contents are stored in a pocket portion so as to close the pocket portion. A blister packaging machine,
a conveyance means for intermittently conveying the blister film;
sheet cutting means for cutting the temporarily stopped blister film,
The sheet cutting means includes a first component and a second component provided at positions sandwiching the blister film,
The first component is
a sheet punching blade having a blade portion having a shape corresponding to the outer edge shape of the blister sheet;
a scrap cutting blade provided downstream of the sheet punching blade in the conveying direction of the blister film;
The second component includes:
a sheet punching receiving part configured to transport the blister film along a flat surface, having a shape corresponding to the outer edge shape of the blister sheet, and having a punching hole opened in the surface;
a scrap cutting receiving section provided downstream of the sheet punching receiving section in the conveying direction;
The first component moves from the retracted position where the sheet punching blade and the scrap cutting blade are separated from the blister film to a predetermined cutting position, so that the sheet punching blade closes the punching hole. The blister film is punched out by the sheet punching blade and the sheet punching receiving part, and the scrap part of the blister film located downstream of the sheet punching blade in the conveying direction is while being configured to be cut by a scrap cutting blade and the scrap cutting receiver;
By moving the first component from the retracted position to the predetermined one-way cutting position, the scrap part is cut by the scrap cutting blade and the scrap cutting receiver without punching out the blister film. It is configured as follows,
Between the sheet punching receiving part and the scrap cutting receiving part in the second component, the scrap part is guided to pass through a path approaching the scrap cutting blade, and at least the first component is provided. a state in which the blister film is floated from a downstream edge portion located on the downstream side in the conveying direction among the edge portions of the sheet punching receiving portion corresponding to the punching holes in the state in which the sheet punching receiving portion is located at the retracted position; A guide means is provided that allows the
A portion of the scrap cutting receiving portion that cuts the scrap portion in cooperation with at least the scrap cutting blade is located further along the moving direction of the first component than the surface of the sheet punching receiving portion. A blister packaging machine characterized by a protruding scrap cutting blade. The first component has a holding part capable of sandwiching the blister film between it and the surface of the sheet punching receiving part, and is equipped with a predetermined buffering means,
When the first component is moved from the retracted position to the both cutting positions, the blister film is 2. The blister packaging machine according to claim 1, wherein the blister film is sandwiched, and after the blister film is sandwiched, the buffer means does not inhibit the movement of the first component toward the both cutting positions. . When the first component is moved from the retracted position to the both cutting positions, the scrap part is cut by the scrap cutting blade and the scrap cutting receiving part before the holding part comes into contact with the blister film. 3. The blister packaging machine according to claim 2, wherein the blister packaging machine is configured to: Claims 1 to 3, wherein the scrap cutting blade is configured so as not to protrude further toward the scrap cutting receiver than the sheet punching blade along the moving direction of the first component. The blister packaging machine according to any one of the above. The blister packaging machine according to any one of claims 1 to 4, wherein the guide means is an inclined surface that guides the scrap part as the scrap part slides. 6. An angle θ1 of a smaller angle formed by the inclined surface with respect to a virtual plane including the surface of the sheet punching receiving portion is 10° or more and 20° or less. Blister packaging machine. In a cross section that is perpendicular to the imaginary plane including the surface of the sheet punching receiving part, parallel to the conveying direction of the blister film, and passing through the downstream edge part, the blister film is The angle θ2 of the smaller angle formed by a virtual line drawn from the most downstream part of the inclined surface along the conveyance direction to the downstream edge part is 5° or more and 20° or less. A blister packaging machine according to claim 5 or 6. Any one of claims 5 to 7, wherein a height H of the scrap cutting receiving part with respect to the surface of the sheet punching receiving part along the moving direction of the first component is 3 mm or more and 8 mm or less. The blister packaging machine according to item 1. The blister packaging machine according to any one of claims 1 to 8, wherein the surface of the sheet punching receiving part is a horizontal flat surface.

Images