JP2015107822A - Seal device of blister pack and packaging device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a seal device of a blister pack capable of improving sealability of the blister pack.SOLUTION: A seal device 70 comprises: a seal drum 71 provided rotatably around a rotary shaft 71a and having a cantilever support structure in which one end side of the rotary shaft 71a is supported by a device body; a seal roll 72 disposed oppositely to the seal drum 71 for thermally compressing and bonding a container film 1 and a lid film 2 between with the seal drum 71; an arm part 73 which supports the seal roll 72 rotatably, is provided swingably around a swing shaft 73a, and has a cantilever support structure in which one end side of the swing shaft 73a is supported by the device body; and a connection member 81 for rotatably supporting the other end side of the rotary shaft 71a of the seal drum 71 and the other end side of the swing shaft 73a of the arm part 73 respectively and connecting the other end side of the rotary shaft 71a and the other end side of the swing shaft 73a.

Description

  The present invention relates to a blister pack sealing apparatus and a packaging apparatus including the same.

  2. Description of the Related Art Conventionally, a blister pack having a container film having a pocket portion for storing contents and a lid film for sealing an opening portion of the pocket portion is known as a packaging form for pharmaceuticals and foods. In addition, some blister packs are so-called PTP (Press Through Pack) sheets, in which the pocket portion is pushed with a finger to break through the lid film and take out the contents.

  Patent Document 1 discloses a sealing device used for manufacturing a PTP sheet. The sealing device disclosed in Patent Document 1 is provided opposite to a film receiving roll having a plurality of recesses capable of accommodating a plurality of pocket portions formed in a packaging film, and the film receiving roll. And a heatable seal roll. The sealing device further includes roll position changing means capable of changing the position of the seal roll between a pressure contact state in which the seal roll is in pressure contact with the film receiving roll and a separated state in which the seal roll is separated from the film receiving roll. ing.

JP 2006-335465 A

  The configuration of a conventional sealing device will be described in detail with reference to the drawings. FIG. 6 is a top view showing the configuration of a conventional sealing device, and FIGS. 7A and 7B are side views showing the configuration and operation of the sealing device. As shown in FIGS. 6 and 7, the sealing device includes a sealing drum 271, a sealing roll 272 disposed to face the sealing drum 271, and an arm portion 273 that rotatably supports the sealing roll 272. ing. The seal drum 271 is provided so as to be rotatable about a rotation shaft 271a. A concave portion 271b (see FIG. 6) is formed on the outer peripheral surface of the seal drum 271 at a position corresponding to the pocket portion 201a (see FIGS. 7A and 7B) of the container film 201 supplied from the upstream side. Yes. The arm portion 273 is provided so as to be swingable about the swing shaft 273a. The seal roll 272 is movable in a direction approaching the seal drum 271 or a direction away from the seal drum 271 by the swinging of the arm portion 273. Thereby, the seal roll 272 can take a pressure contact position (see FIG. 7A) where it is pressed against the seal drum 271 and a separation position away from the seal drum 271 (see FIG. 7B).

  The seal drum 271 is exchanged for each type of product in which the width of the container film 201 and the position or shape of the pocket portion 201a are different. Therefore, generally, the seal drum 271 is supported only on one end side (the back side of the device) of the rotating shaft 271a by the back base 280 of the device body so that the replacement work on the front side of the device (downward in FIG. 6) is easy. A cantilevered support structure. In general, the arm portion 273 also has a cantilever support structure in which only one end side (the device back side) of the swing shaft 273a is supported by the back base 280 of the device body.

  The container film 201 is supplied from the upstream pocket portion forming device to the sealing device, and the lid film 202 is supplied from the lid film supply drum 275. The sealing device causes the container film 201 and the lid film 202 to be thermocompression bonded by passing between the seal drum 271 and the seal roll 272 at the press contact position in a state where the container film 201 and the lid film 202 are overlapped. It has become.

  However, since the seal drum 271 has a cantilever support structure, when pressed by the seal roll 272, the tip end side of the seal drum 271 (the front side of the apparatus, the free end side of the rotating shaft 271a) escapes due to bending or the like. End up. In FIG. 6 and FIG. 7A, the direction of escape generated on the front end side of the seal drum 271 is indicated by a white thick arrow. In particular, when the wide container film 201 and the lid film 202 are subjected to thermocompression bonding, since the seal drum 271 having a long axial length is used, the clearance on the front end side of the seal drum 271 is increased. If escape occurs on the front end side of the seal drum 271, the force of pressurizing the container film 201 and the lid film 202 and thermocompression bonding becomes weaker on the front end side, so that the sealing performance of the produced blister pack is remarkably deteriorated. There was a problem that it might be done.

  In order to solve the above problems, it is conceivable that both ends of the rotating shaft 271a are supported by the apparatus main body, and the seal drum 271 has a dual-support structure. FIG. 8 is a top view showing a configuration of a sealing device in which the seal drum 271 is a double-supported structure, and FIG. 9 is a side view showing a configuration of the sealing device. As shown in FIGS. 8 and 9, in this sealing device, the other end side of the rotary shaft 271a of the seal drum 271 is supported by a base member 281 that protrudes from the rear base 280 toward the front side of the device and is bent in an L shape. . In this sealing device, since both the one end side and the other end side of the rotating shaft 271a are supported by the device main body, when the seal roll 272 is brought into pressure contact with the seal drum 271, the tip end side of the seal drum 271 is escaped. Can be suppressed.

  However, in the sealing device shown in FIGS. 8 and 9, the arm portion 273 that supports the seal roll 272 has a cantilever support structure. For this reason, when the seal roll 272 is brought into pressure contact with the seal drum 271, escape occurs on the front end side of the seal roll 272. In FIG. 8 and FIG. 9, the direction of escape occurring on the tip side of the seal roll 272 is indicated by a thick arrow. The sealing device shown in FIGS. 8 and 9 also weakens the sealing performance of the produced blister pack because the force for pressurizing the container film 201 and the lid film 202 is weakened on the tip side. There was a problem that there was.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a blister pack sealing device and a packaging device including the same, which can improve the sealing performance of the blister pack.

  The blister pack sealing device according to the present invention includes a recess that can accommodate a pocket portion formed in a belt-like container film on the outer peripheral surface, and is provided to be rotatable about a rotation shaft, and one end side of the rotation shaft is A seal drum having a cantilevered support structure supported by the apparatus main body, a seal roll that is disposed opposite to the seal drum and that thermocompression-bonds the container film and the belt-shaped lid film between the seal drum, An arm portion having a cantilever support structure that supports the seal roll rotatably and is provided so as to be swingable about a swing shaft, wherein one end side of the swing shaft is supported by an apparatus main body, and the rotary shaft A connecting member for rotatably supporting the other end side of the rotating shaft and the other end side of the swinging shaft, and connecting the other end side of the rotating shaft and the other end side of the swinging shaft. The one in which the features.

  Further, the blister pack sealing device according to the present invention is characterized in that the connecting member is detachably attached to at least the other end side of the rotating shaft.

  Moreover, the packaging apparatus which concerns on this invention is equipped with said sealing device of a blister pack, It is characterized by the above-mentioned.

  According to the present invention, since the other end side of the rotation shaft of the seal drum and the other end side of the swing shaft of the arm portion are connected by the connecting member, the other end side of the rotation shaft of the seal drum and the arm portion are connected. The distance from the other end side of the swing shaft can be kept constant. For this reason, when the seal roll is pressed against the seal drum, it is possible to prevent the tip end side of the seal drum or the tip end side of the seal roll from escaping away from each other. Therefore, since the container film and the lid film can be uniformly pressurized, the sealing property of the blister pack can be improved.

It is a side view which shows the structure of the packaging apparatus provided with the sealing apparatus of the blister pack which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the packaging apparatus provided with the sealing apparatus of the blister pack which concerns on Embodiment 1 of this invention. It is a top view which shows the structure of the sealing apparatus of the blister pack which concerns on Embodiment 1 of this invention. It is a side view which shows the structure of the sealing apparatus of the blister pack which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the PTP sheet manufactured with the packaging apparatus provided with the sealing apparatus of the blister pack which concerns on Embodiment 1 of this invention. It is a top view which shows the structure of the conventional sealing apparatus. It is a side view which shows the structure and operation | movement of the conventional sealing apparatus. It is a top view which shows the structure of the sealing device which used the seal drum as a double-end support structure. It is a side view which shows the structure of the sealing device which used the seal drum as the double-end support structure.

Embodiment 1 FIG.
Hereinafter, the blister pack sealing device according to Embodiment 1 of the present invention and the packaging device including the same will be described by taking a packaging device for packaging tablets on a PTP sheet, which is an example of a blister pack, as an example.

  FIG. 1 is a side view illustrating a configuration of a packaging device including a sealing device according to the first embodiment. FIG. 2 is a perspective view showing the configuration of the packaging device. In the following drawings including FIG. 1 and FIG. 2, the dimensional relationship and shape of each component may differ from the actual ones.

The packaging device 100 according to the first embodiment is configured by sequentially connecting a container film supply device 10, a pocket portion forming device 20, a dancer roll portion 50, a filling device 60, and a sealing device 70. The packaging device 100 also includes a controller 90 that controls the actuators of the container film supply device 10, the pocket portion forming device 20, the dancer roll portion 50, the filling device 60, and the sealing device 70.
In the first embodiment, the control device 90 that controls the actuators of the container film supply device 10, the pocket portion forming device 20, the dancer roll portion 50, the filling device 60, and the sealing device 70 is configured as one control device. However, the control device 90 may be divided and provided in a part of these devices, or the control device 90 may be divided and provided in each device to control the actuator of each device. Good.

  The container film supply apparatus 10 supplies, for example, a resin container film 1 such as thermoplastic plastic to a downstream apparatus at a constant speed, and includes a container film supply drum 11. The container film supply drum 11 holds the strip-shaped container film 1 wound in a roll shape, and the container film supply drum 11 itself rotates (by rotating the container film 1 wound in a roll shape). The container film 1 is supplied to a downstream apparatus at a constant speed. The rotation speed of the container film supply drum 11 is controlled by the control device 90.

Moreover, the container film supply apparatus 10 is also provided with the winding diameter measurement sensor 12 which measures the winding diameter (radius) of the container film 1 wound by roll shape. The roll diameter measuring sensor 12 can communicate with the control device 90. When the roll diameter measuring sensor 12 detects that the remaining amount of the container film 1 is low, the control device 90 is connected to a monitor, a speaker, or the like. The alarm means prompts the container film 1 to be replenished.
It should be noted that the container film supply device 10 may be configured to be capable of holding a plurality of container films 1 wound in a roll shape, and may adopt a device that can automatically replace the container film 1 supplied to the downstream device.

  The pocket part forming apparatus 20 includes a heating part 30 for heating the container film 1, a pocket forming part 40 for forming a plurality of pocket parts 1 a in the container film 1 heated by the heating part 30 to be flexible, and the container film 1. Are provided at a constant speed, and a unit reciprocating mechanism 21 that moves the heating unit 30 and the pocket forming unit 40 is provided.

The heating unit 30 includes an upper heater 31 and a lower heater 32 that sandwich and heat the container film 1, and a heater up-and-down mechanism 33 that moves the lower heater 32 up and down. Specifically, the upper heater 31 is provided above the container film 1 that is fed at a constant speed so that the lower surface of the upper heater 31 is in contact with the upper surface of the container film 1 (or at a slight interval). . For this reason, by raising the lower heater 32 by the heater up-and-down mechanism 33, the container film 1 can be sandwiched and heated by the upper heater 31 and the lower heater 32.
The heater vertical mechanism 33 is an air cylinder, for example, and the vertical movement of the heater vertical mechanism 33 is controlled by the control device 90.

The pocket forming unit 40 includes a pair of molds (male 41 and female 42) that sandwich the container film 1 to form the pocket 1a, a film presser 43, and a male vertical mechanism that moves the male 41 up and down. 44a and a female up / down mechanism 44b for moving the female mold 42 up and down. Specifically, the film presser 43 is provided above the container film 1 that is fed at a constant speed so that the lower surface of the film presser 43 is in contact with the upper surface of the container film 1 (or at a slight interval). . The female mold 42 is provided below the film presser 43 and the container film 1. A plurality of concave portions 42 a are formed on the upper surface portion of the female mold 42 corresponding to the position of the pocket portion 1 a. And the structure which clamps the container film 1 (more specifically, positions other than the location in which the pocket part 1a is formed) with the film presser 43 and the female mold 42 by raising the female mold 42 with the female mold vertical mechanism 44b. It has become.
The female vertical mechanism 44b is, for example, an air cylinder, and the vertical movement of the female vertical mechanism 44b is controlled by the control device 90.

The male mold 41 is provided above the film presser 43 and the container film 1. On the upper surface portion of the male mold 41, a plurality of convex portions 41a are formed corresponding to the position of the pocket portion 1a (that is, the position of the concave portion 42a of the female mold 42). Then, in a state where the female mold 42 is raised, the male mold 41 is lowered by the male mold vertical mechanism 44a, and the container film 1 is sandwiched between the convex part 41a of the male mold 41 and the concave part 42a of the female mold 42, thereby The pocket 1 a is formed on the film 1.
The male vertical mechanism 44a is, for example, an air cylinder, and the vertical movement of the male vertical mechanism 44a is controlled by the control device 90.

  The film feed roll 45 is for feeding the container film 1 at a constant speed (supplying it to a downstream apparatus at a constant speed). The rotation speed of the film feed roll 45 is controlled by the control device 90.

The unit reciprocating mechanism 21 is a linear motion actuator that causes the table 21a to reciprocate linearly by a driving force such as a motor having a variable rotational speed. The unit reciprocating mechanism 21 is provided such that the table 21 a reciprocates along the feeding direction of the container film 1. A heating unit 30 and a pocket forming unit 40 are provided on the table 21 a of the unit reciprocating mechanism 21. That is, the unit reciprocating mechanism 21 reciprocates the heating unit 30 and the pocket forming unit 40 along the feeding direction of the container film 1.
The moving speed and moving direction of the table of the unit reciprocating mechanism 21 are controlled by the control device 90.

  When the feeding speed of the container film 1 of the upstream apparatus is different from the feeding speed of the container film 1 of the downstream apparatus, the dancer roll unit 50 absorbs the difference between the feeding amounts of the container films 1. Is. The dancer roll unit 50 includes a film feed roll 51 and a dancer roll 52. The film feed roll 51 is for feeding the container film 1 at a constant speed (supplying it to a downstream apparatus at a constant speed). The rotation speed of the film feed roll 45 is controlled by the control device 90. The dancer roll 52 is rotatably attached to a rotary shaft that can move up and down, and applies a certain tension to the upper surface of the bottom of the relaxed container film 1. That is, when the feeding speed of the container film 1 of the upstream apparatus is different from the feeding speed of the container film 1 of the downstream apparatus, the dancer roll unit 50 changes the amount of slack of the container film 1 and both containers It absorbs the deviation of the feed amount of the film 1.

  In addition, the general pocket part forming apparatus needs to intermittently feed the container film 1 when forming the pocket part 1a in the container film 1. For this reason, the feeding speed of the container film 1 of the pocket portion forming apparatus is always different from the feeding speed of the container film 1 of the apparatus disposed on the upstream side and the downstream side of the pocket portion forming apparatus. Therefore, the packaging apparatus provided with the general pocket part forming apparatus always requires the dancer roll part 50 on the upstream side and the downstream side of the pocket part forming apparatus.

  On the other hand, the pocket portion forming apparatus 20 used in the first embodiment can form the pocket portion 1a while feeding the container film 1 at a constant speed. Further, the container film supply device 10 provided on the upstream side of the pocket portion forming apparatus 20 supplies the container film 1 to the pocket portion forming apparatus 20 at a constant speed. Moreover, the filling device 60 provided on the downstream side of the pocket portion forming device 20 can fill the pocket portion 1a with a tablet while feeding the container film 1 at a constant speed. For this reason, in the packaging apparatus 100 which concerns on this Embodiment 1, the dancer roll part 50 of the upstream and downstream of the pocket part formation apparatus 20 is not necessarily required. In addition, the packaging device 100 which concerns on this Embodiment 1 can also use the general pocket part formation apparatus which intermittently feeds the container film 1. FIG.

  The filling device 60 includes a filling chute 61 disposed above the container film 1. The filling device 60 is for filling the tablet supplied to the filling chute 61 from a tablet supply device (not shown) into the pocket portion 1a of the container film 1 fed at a constant speed.

  The sealing device 70 seals the opening of the pocket 1a filled with tablets with the lid film 2. FIG. 3 is a top view showing the configuration of the sealing device 70 according to the first embodiment. FIG. 4 is a side view showing the configuration and operation of the sealing device 70. As shown in FIGS. 3 and 4, the sealing device 70 includes a substantially cylindrical sealing drum 71, a substantially cylindrical sealing roll 72 disposed so as to face the sealing drum 71, and the sealing roll 72 being rotatable. And an arm part 73 to be supported.

  The seal drum 71 is provided so as to be rotatable about a rotation shaft 71 a that is substantially horizontal and orthogonal to the feeding direction of the container film 1. The seal drum 71 is a cantilever in which only one end side (for example, the back side of the apparatus (upper side in FIG. 3)) of the rotation shaft 71a is supported by the apparatus body (for example, the back base 80 constituting a part of the apparatus body). It has a support structure. That is, the other end side (for example, the front side of the apparatus (the lower side in FIG. 3)) of the rotating shaft 71a is a free end that is not supported by the apparatus main body. On the outer peripheral surface of the seal drum 71, a recess 71 b that can accommodate the pocket portion 1 a is formed at a position corresponding to the pocket portion 1 a of the container film 1. The seal drum 71 is rotationally driven at a rotational speed that matches the feed speed of the container film 1 and supports the container film 1 (more specifically, the surface on which the pocket portion 1a protrudes) on the outer peripheral surface. The rotational speed of the seal drum 71 is controlled by the control device 90.

  The arm portion 73 is provided so as to be swingable about a swing shaft 73 a that is substantially horizontal and orthogonal to the feeding direction of the container film 1. The arm unit 73 has a cantilever support structure in which only one end side (for example, the back side of the apparatus) of the swing shaft 73a is supported by the apparatus main body (for example, the back base 80). That is, the other end side (for example, the front side of the apparatus) of the swing shaft 73a is a free end that is not supported by the apparatus main body.

  The arm portion 73 includes a swing shaft portion 74 that is swingably (rotatably) supported by the apparatus main body, a swing shaft portion 75 that is swingably (rotatably) supported by the swing shaft portion 74, and A seal roll support portion 76 that is fixed to the swing shaft portion 75 and rotatably supports the seal roll 72 is provided.

  The swing shaft portion 74 has a quadrangular prism shape extending along the swing shaft 73 a of the arm portion 73. The swing shaft portion 74 is formed with a through hole 74a having a circular cross section that passes through the inside perpendicular to the swing shaft 73a. The swing shaft portion 75 has a substantially cylindrical shape. The swing shaft portion 75 is inserted into the through hole 74a of the swing shaft portion 74, and is supported by the swing shaft portion 74 via the rotary bearings 74b and 74c. The seal roll support portion 76 has a U-shape as a whole. Both end portions of the seal roll support portion 76 support both ends of the rotary shaft 72a of the seal roll 72 via rotary bearings 76a and 76b, respectively. The rotation shaft 75 a of the swing shaft portion 75 is orthogonal to both the swing shaft of the swing shaft portion 74 (the swing shaft 73 a of the arm portion 73) and the rotation shaft 72 a of the seal roll 72.

  That is, the entire arm portion 73 can swing with respect to the apparatus main body about the swing shaft 73a. Further, the seal roll support portion 76 of the arm portion 73 is capable of swinging around the rotation shaft 75a with respect to the swing shaft portion 74 of the arm portion 73. By this swinging motion, the seal roll 72 supported by the seal roll support portion 76 can follow to some extent the relative inclination of the seal drum 71 to be pressed. The swing of the arm unit 73 is controlled by the control device 90.

  The seal roll 72 is supported by the seal roll support portion 76 of the arm portion 73 so as to be rotatable about the rotation shaft 72a. Further, the seal roll 72 can move (swing) in a direction approaching the seal drum 71 or a direction away from the seal drum 71 by swinging of the arm portion 73. As a result, the seal roll 72 has two positions: a press-contact position (see FIG. 4A) that is pressed against the seal drum 71, and a separation position that is separated from the seal drum 71 (see FIG. 4B). At least it can be taken. The seal roll 72 in the pressure contact position rotates following the rotation of the seal drum 71 (advance of the container film 1 and the lid film 2). The seal drum 71 has a built-in heater for heating the container film 1 and the lid film 2.

  With the container film 1 supported by the outer peripheral surface of the seal drum 71, the seal roll 72 heated by the heater is moved (swinged) to the seal drum 71 side, and the belt-shaped container film 1 and the container film 1 The lid film 2 can be thermocompression bonded to the container film 1 by sandwiching the belt-like lid film 2 supplied to the opening side of the pocket portion 1a with the seal drum 71 and the seal roll 72 at the press contact position.

  As described above, in the sealing device 70, the other end side (for example, the end portion on the front side of the device) of each of the rotation shaft 71a of the seal drum 71 and the swing shaft 73a of the arm portion 73 is supported by the device body. It is not a free end. In the present embodiment, a connecting member 81 (a connecting bar or a reinforcing bar) that connects the other end side of the rotation shaft 71a of the seal drum 71 and the other end side of the swing shaft 73a of the arm portion 73 is provided. The connecting member 81 rotatably supports the other end side of the rotation shaft 71 a of the seal drum 71 and the other end side of the swing shaft 73 a of the arm portion 73. The connecting member 81 of this example is formed using a metal elongated flat plate member.

  A bottomed shaft hole is formed on the rotating shaft 71a of the end surface on the free end side of the seal drum 71, and a rotating body 71c is fitted into the shaft hole. The rotating body 71c includes a cylindrical portion and a flange portion, and the cylindrical portion of the rotating body 71c is supported by the seal drum 71 via rotating bearings 71d and 71e. The rotating body 71c is rotatable with respect to the seal drum 71 about a rotating shaft coaxial with the rotating shaft 71a.

  A bottomed shaft hole is formed on the swing shaft 73a of the end surface on the free end side of the swing shaft portion 74 of the arm portion 73, and a rotating body 74d is fitted into the shaft hole. The rotating body 74d includes a cylindrical portion and a flange portion, and the cylindrical portion of the rotating body 74d is supported by the swing shaft portion 74 via rotating bearings 74e and 74f. The rotating body 74d is rotatable with respect to the swinging shaft portion 74 around a rotating shaft coaxial with the swinging shaft 73a.

  One end of the connecting member 81 is detachably attached to the rotating body 71c of the seal drum 71 using an attaching member 81a. Further, the other end of the connecting member 81 is detachably attached to the rotating body 74d of the swing shaft portion 74 using an attachment member 81b. That is, the connecting member 81 is attached to the seal drum 71 (rotating shaft 71a) via the rotating bearings 71d and 71e, and rotates with respect to the swinging shaft portion 74 (the swinging shaft 73a of the arm portion 73). It is attached via bearings 74e and 74f.

  In the present embodiment, since the connecting member 81 is provided, the distance between the other end side of the rotating shaft 71a and the other end side of the swing shaft 73a can be maintained constant. Therefore, when the seal roll 72 is pressed against the seal drum 71, the front end side of the seal drum 71 (the free end side of the rotation shaft 71a) and the front end side of the seal roll 72 (the free end side of the rotation shaft 72a) are mutually connected. Escape in the direction of leaving can be prevented. Further, since the connecting member 81 is detachably attached to at least the seal drum 71, the replacement work of the seal drum 71 can be easily performed by removing the connecting member 81 from the seal drum 71. Further, since the connecting member 81 of this example is detachably attached to both the seal drum 71 and the seal roll 72, the connecting member 81 can be detached from the seal device 70, and the seal drum 71 is replaced. Work can be performed more easily.

  Here, when the seal roll 72 is located at the pressure contact position, when viewed in a direction parallel to the rotary shaft 71a or the swing shaft 73a (see FIG. 4A), the rotary shaft 71a, the rotary shaft 72a, and the swing shaft. The triangles connecting the respective positions 73a are generally right-angled triangles (the rotation shaft 72a is at a right angle). This is because the seal roll 72 is strongly pressed against the seal drum 71 while minimizing the drive torque of the arm portion 73 centering on the swing shaft 73a.

  Referring back to FIGS. 1 and 2, the lid film supply drum 79 is configured such that the lid film 2 made of, for example, metal foil (for example, aluminum foil) is placed between the seal drum 71 and the seal roll 72 (more specifically, above the container film 1). To supply. The lid film supply drum 79 holds the belt-like lid film 2 wound in a roll shape, and the lid film supply drum 79 itself rotates (by rotating the lid film 2 wound in a roll shape), The lid film 2 is supplied at a speed substantially equal to the feeding speed of the container film 1. The rotation speed of the lid film supply drum 79 is controlled by the control device 90.

Next, the overall operation of the packaging apparatus 100 will be described.
The pocket forming apparatus 20 to which the container film 1 is supplied from the container film supply apparatus 10 continues to feed the container film 1 at a constant speed by the film feed roll 45. Meanwhile, the pocket portion forming apparatus 20 forms the pocket portion 1 a in the container film 1.

  The container film 1 in which the pocket portion 1 a is formed by the pocket portion forming device 20 passes through the dancer roll portion 50, and then the tablet is filled in the pocket portion 1 a by the filling device 60 and sent to the sealing device 70.

  In the sealing device 70, the sealing drum 71 is rotated according to the feeding speed of the container film 1, and the pocket portion 1 a of the container film 1 is inserted into the concave portion 71 b of the sealing drum 71. In the sealing device 70, the portion of the container film 1 in which the pocket portion 1a is inserted into the concave portion 71b enters between the seal drum 71 and the seal roll 72 together with the lid film 2 supplied to the opening side of the pocket portion 1a. . As a result, the container film 1 and the lid film 2 are sandwiched between the seal drum 71 and the seal roll 72, and the container film 1 and the lid film 2 are thermocompression bonded to each other. That is, the opening of the pocket portion 1 a is sealed with the lid film 2.

  Subsequent steps will be described with reference to FIG. FIG. 5 shows an example of the PTP sheet 3 manufactured by the packaging device 100. FIG. 5A is a plan view of the PTP sheet 3, and FIG. 5B is a side view of the PTP sheet 3. The container film 1 and the lid film 2 that are thermocompression bonded to each other are then formed with slits 1b by a slit device (not shown). Further, the container film 1 and the lid film 2 become a PTP sheet 3 by being cut into a predetermined shape.

  As described above, the blister pack sealing device according to the present embodiment includes the recessed portion 71b that can accommodate the pocket portion 1a formed in the belt-like container film 1 on the outer peripheral surface, and the rotation shaft 71a as a center. A seal drum 71 having a cantilever support structure that is rotatably provided and has one end side of the rotation shaft 71a supported by the apparatus main body (in this example, the back base 80), and is disposed to face the seal drum 71. A seal roll 72 for thermocompression bonding the container film 1 and the belt-like lid film 2 between the two, and a seal roll 72 that rotatably supports and swings about a swing shaft 73a. An arm 73 having a cantilever support structure in which one end side of the shaft 73a is supported by the apparatus main body (back base 80 in this example), and a rotation shaft of the seal drum 71 A connecting member 81 that rotatably supports the other end side of 1a and the other end side of the swinging shaft 73a of the arm portion 73, and connects the other end side of the rotating shaft 71a and the other end side of the swinging shaft 73a. It is characterized by having.

  According to this configuration, since the connecting member 81 is provided, the distance between the other end side of the rotation shaft 71a and the other end side of the swing shaft 73a can be maintained constant. For this reason, when the seal roll 72 is pressed against the seal drum 71, it is possible to prevent the front end side of the seal drum 71 or the front end side of the seal roll 72 from escaping in a direction away from each other. Therefore, since the container film 1 and the lid film 2 can be uniformly pressurized, the sealing performance of the blister pack such as the PTP sheet 3 can be improved. Moreover, the mechanical strength of the sealing device 70 can be reinforced by providing the connecting member 81.

  In addition, the blister pack sealing device according to the present embodiment is characterized in that the connecting member 81 is detachably attached to at least the other end of the rotating shaft 71a of the sealing drum 71. .

  According to this configuration, by removing the connecting member 81 from the other end side of the rotation shaft 71a of the seal drum 71, the replacement work of the seal drum 71 can be easily performed.

  DESCRIPTION OF SYMBOLS 1 Container film, 1a pocket part, 1b slit, 2 Lid film, 3 PTP sheet, 10 Container film supply apparatus, 11 Container film supply drum, 12 winding diameter measurement sensor, 20 Pocket part formation apparatus, 21 Unit reciprocation mechanism, 21a Table , 30 Heating part, 31 Upper heater, 32 Lower heater, 33 Heater up / down mechanism, 40 Pocket forming part, 41 Male type, 41a Convex part, 42 Female type, 42a Concave part, 43 Film presser, 44a Male up / down type mechanism, 44b Female Mold up / down mechanism, 45 film feed roll, 50 dancer roll section, 51 film feed roll, 52 dancer roll, 60 filling device, 61 filling chute, 70 sealing device, 71 seal drum, 71a rotating shaft, 71b recess, 71c rotating body, 71d, 71e times Roller bearing, 72 Seal roll, 72a Rotating shaft, 73 Arm portion, 73a Swing shaft, 74 Swing shaft portion, 74a Through hole, 74b, 74c, 74e, 74f Rotating bearing, 74d Rotating body, 75 Swing shaft portion, 75a Rotating shaft, 76 Seal roll support, 76a, 76b Rotary bearing, 79 Lid film supply drum, 80 Back base, 81 Connecting member, 81a, 81b Mounting member, 90 Control device, 100 Packaging device, 201 Container film, 202 Lid Film, 271 Seal drum, 271a Rotating shaft, 271b Recess, 272 Seal roll, 273 Arm, 273a Oscillating shaft, 275 Lid film supply drum, 280 Back base, 281 Base member.

Claims (3)

A cantilever supporting structure in which a concave portion capable of accommodating a pocket portion formed in a belt-like container film is provided on the outer peripheral surface, and is provided to be rotatable around a rotating shaft, and one end side of the rotating shaft is supported by an apparatus main body. A sealing drum having
A seal roll that is disposed to face the seal drum and thermocompresses the container film and the belt-shaped lid film between the seal drum and the seal drum;
An arm portion having a cantilevered support structure in which the seal roll is rotatably supported and swingable about a swing shaft, and one end side of the swing shaft is supported by an apparatus body;
A connecting member that rotatably supports the other end of the rotating shaft and the other end of the swing shaft, and connects the other end of the rotating shaft and the other end of the swing shaft; A blister pack sealing device comprising:   The blister pack sealing device according to claim 1, wherein the connecting member is detachably attached to at least the other end of the rotating shaft.   A packaging device comprising the blister pack sealing device according to claim 1.

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