JP2016137938A - Pocket forming device and blister packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pocket forming device capable of suppressing a foreign matter from entering a pocket part when forming the pocket part in a packaging film by using a plug, and a blister packaging machine.SOLUTION: A pocket forming device 6 comprises: a chamber 50 having an interior space into which high-pressure air is introduced; a cylindrical fixed shaft part 53a fixed to the chamber 50; a movable shaft part 60 which is inserted to the inner peripheral side of the fixed shaft part 53a, and displaces a plug 63 inside the chamber 50; a cylindrical external cylinder 55 which is provided at the outer peripheral side of the fixed shaft part 53a in a relatively displaceable manner, and is fixed to the movable shaft part 60; an air cylinder 72 for displacing the external cylinder 55 and the movable shaft part 60 relatively with respect to the fixed shaft part 53a; and a slide bearing 56 provided between the outer peripheral part of the fixed shaft part 53a and the inner peripheral part of the external cylinder 55.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a pocket forming apparatus for forming a pocket portion on a packaging film and a blister packaging machine provided with the same.

  In general, a PTP sheet is known as a blister package. The PTP sheet is composed of a packaging film in which a pocket part filled with contents such as tablets is formed, and a cover film that is attached to the packaging film so as to seal the opening side of the pocket part. ing.

  Such a PTP sheet includes a step of forming a pocket portion while transporting a belt-like packaging film, a step of filling tablets in the pocket portion, and a cover film on the packaging film so as to seal the opening side of the pocket portion. It is manufactured through a process of attaching, a process of punching out in units of PTP sheets, and the like.

  In forming the pocket portion, a forming apparatus that presses at least the packaging film with a plug, such as plug forming or plug assist pressure forming, is generally used (see, for example, Patent Documents 1 and 2).

  For example, in the plug-assisted pressure forming method, the upper and lower surfaces of a packaging film heated and softened are sandwiched between a chamber box (hereinafter simply referred to as “chamber”) and a lower mold (female mold), and preformed with a plug from the chamber side. Thereafter, the pocket portion is formed by blowing high-pressure air into the chamber.

JP 2004-238006 A JP 2004-167554 A

  However, conventionally, a cylindrical fixed shaft portion that is generally fixed to the chamber and penetrates through the chamber, a movable shaft portion that is inserted so as to be relatively displaceable with respect to the fixed shaft portion, and a movable shaft that protrudes into the chamber. A plug provided at one end of the movable portion and a fluid pressure cylinder connected to the other end of the movable shaft portion to drive the movable shaft portion, and an inner peripheral portion of the fixed shaft portion and an outer peripheral portion of the movable shaft portion, It is the structure by which the bearing (bearing) was arrange | positioned between.

  For this reason, there is a possibility that foreign matter (dust, oil, etc.) generated from the bearing may enter the chamber and eventually the pocket portion after molding through a gap between the fixed shaft portion and the movable shaft portion communicating with the chamber.

  Such a problem can occur not only in a molding apparatus including a chamber but also in all molding apparatuses that perform plug molding.

  The present invention has been made in view of the above circumstances, and a pocket forming apparatus and a blister capable of suppressing foreign matters from being mixed into a pocket portion when the pocket portion is formed on a packaging film using a plug. One of the main purposes is to provide a packaging machine.

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

Means 1. In the manufacturing process of the blister package, a pocket forming device for forming a pocket portion for containing predetermined contents into a packaging film using at least a plug (by pressing with a plug),
A cylindrical fixed shaft portion fixed to a predetermined portion along a predetermined axial direction substantially orthogonal to the packaging film surface;
A movable shaft portion that is inserted into the inner peripheral side of the fixed shaft portion and that displaces the plug along the axial direction;
A cylindrical outer cylinder provided on the outer peripheral side of the fixed shaft portion so as to be relatively displaceable with respect to the fixed shaft portion along the axial direction; and
A driving means for displacing the outer cylinder and the movable shaft portion relative to the fixed shaft portion along the axial direction;
A pocket forming apparatus comprising a bearing between an outer peripheral portion of the fixed shaft portion and an inner peripheral portion of the outer cylinder.

  According to the above means 1, the outer cylinder supported by the bearing with respect to the fixed shaft portion operates along the axial direction, so that the movable shaft portion fixed to the outer tube is not directly supported by the bearing, It can operate stably along the axial direction.

  As a result, since there is no need to provide a bearing between the movable shaft portion for displacing the plug and the fixed shaft portion through which the plug is inserted, foreign matter (dust, oil, etc.) generated from the bearing is Generation | occurrence | production of malfunctions, such as leaking to the plug side through the clearance gap between fixed shaft parts, can be suppressed. As a result, it can suppress that a foreign material mixes in the pocket part after shaping | molding.

  In addition, there is no need to use an oil-free bearing or the like that has been subjected to a special surface treatment, and the increase in the manufacturing cost of the apparatus can be suppressed. In other words, since oil can be added to the bearing, wear of the bearing can be suppressed and the life of the apparatus can be extended.

Mean 2. In the manufacturing process of the blister package, a pocket forming device for forming a pocket portion for containing predetermined contents into a packaging film using at least a plug (by pressing with a plug),
A chamber having an internal space into which a high-pressure gas blown against the packaging film is introduced;
A cylindrical fixed shaft portion that is fixed to the chamber along a predetermined axial direction substantially orthogonal to the packaging film surface, and communicated with the chamber;
A movable shaft portion that is inserted into the inner peripheral side of the fixed shaft portion and that displaces the plug along the axial direction in the chamber;
A cylindrical outer cylinder provided on the outer peripheral side of the fixed shaft portion so as to be relatively displaceable with respect to the fixed shaft portion along the axial direction; and
A driving means for displacing the outer cylinder and the movable shaft portion relative to the fixed shaft portion along the axial direction;
A pocket forming apparatus comprising a bearing between an outer peripheral portion of the fixed shaft portion and an inner peripheral portion of the outer cylinder.

  According to the means 2, the same effects as the means 1 can be obtained. In particular, in this means 2, since the bearing is provided on the outer peripheral side of the fixed shaft portion, that is, outside the chamber (a portion not communicating with the internal space of the chamber), foreign matter (dust, oil, etc.) generated from the bearing is generated. It is possible to more reliably prevent the occurrence of problems such as inflow into the chamber.

  Means 3. A sealing means (for example, a sealing means for maintaining airtightness in the chamber or a foreign matter entering the chamber from the outside between the outer peripheral portion of the fixed shaft portion and the inner peripheral portion of the outer cylinder) The pocket forming apparatus according to claim 2, further comprising a sealing means).

  If sealing means such as packing is provided between the movable shaft part and the fixed shaft part, foreign matter (dust etc.) generated by the sealing means is in the chamber and thus in the pocket part after molding as in the case of the bearing. There is a risk of getting in.

  On the other hand, according to the means 3, it is possible to suppress the occurrence of such a problem. Furthermore, since oil can be added to the sliding surface of the sealing means, wear of the sealing means can be suppressed, and the life of the apparatus can be extended.

Means 4. A plug heating means for heating the plug is provided in the movable shaft portion,
4. The means according to claim 1, wherein the movable shaft portion is formed in a hollow cylindrical shape, and wiring for supplying power to the plug heating means is disposed in the movable shaft portion. Pocket molding equipment.

  According to the said means 4, the moldability of a pocket part can be improved by providing a plug heating means.

  For example, when the plug heating means is provided under the configuration of the means 2, a path for drawing the wiring for supplying power to the plug heating means into the chamber from the outside is required.

  On the other hand, it is also conceivable to provide a movable shaft portion for wiring separately from the movable shaft portion for driving the plug. However, in such a configuration, a plurality of movable shaft portions and a plurality of bearings corresponding thereto are required.

  When a plurality of movable shaft portions are provided, the distance between the shafts of the plurality of movable shaft portions changes due to thermal expansion or the like of various members due to the heat generated by the plug heating means. For this reason, a large load is applied to the bearings and the like that support each movable shaft portion, and wear or the like is likely to occur. As a result, foreign matter is likely to be generated and the life of the apparatus is likely to be shortened.

  On the other hand, according to the present means 4, since the movable shaft portion for driving the plug and the movable shaft portion for wiring are combined into one, the occurrence of the above-described problem can be suppressed.

  Means 5. A blister packaging machine comprising the pocket forming apparatus according to any one of means 1 to 4.

  By providing the pocket forming apparatus in the blister packaging machine as in the above means 5, it is possible to reduce the occurrence of defective products in the manufacturing process of the blister package.

  In general, a blister packaging machine is configured to close a pocket portion forming device for forming a pocket portion on a packaging film conveyed in a strip shape, filling means for filling the pocket portion with contents, and the pocket portion. Attachment means for attaching a belt-shaped cover film to the packaging film; and sheet punching means for punching the belt-like blister film having the cover film attached to the packaging film in a blister package unit. . In addition, the blister packaging machine includes a discharge unit that discharges the blister package that has been determined to be defective by a predetermined inspection device.

It is a top view which shows a PTP sheet. It is a fragmentary sectional view which shows the structure of a PTP sheet. It is the schematic which shows the whole structure of a PTP sheet manufacturing apparatus. It is a cross-sectional schematic diagram for demonstrating a pocket shaping | molding apparatus.

  Hereinafter, an embodiment will be described with reference to the drawings. First, the structure of the PTP sheet as a blister package (blister pack) to be manufactured will be described in detail.

  As shown in FIGS. 1 and 2, the PTP sheet 28 is made of PP (polypropylene), for example, and is attached to the packaging film 2 so as to close the pockets 7. And a cover film 13 made of an aluminum film. Each pocket 7 contains one tablet B as the contents.

  The PTP sheet 28 in the present embodiment is manufactured in a sheet shape by punching a strip-shaped PTP film 16 (see FIG. 3) formed from the strip-shaped packaging film 2 and the strip-shaped cover film 13.

  The packaging film 2 of the PTP sheet 28 is formed with a plurality of separation slits 35 so as to be separated into the pair small pieces 34 including the two pocket portions 7. A tag portion 38 with identification information such as a lot number attached thereto is attached to the end portion of the PTP sheet 28.

  Next, an outline of the PTP sheet manufacturing apparatus 1 as a blister packaging machine for manufacturing the PTP sheet 28 will be described with reference to FIG.

  The strip-shaped packaging film 2 is wound in a roll shape on the most upstream side. As described above, the packaging film 2 is made of a relatively hard synthetic resin such as PP and has a predetermined rigidity, and is transparent or translucent.

  A drawing end of the packaging film 2 wound in a roll shape is guided by a guide roll 3. The packaging film 2 is hooked on the intermittent feed roll 4 on the downstream side of the guide roll 3. The intermittent feed roll 4 is connected to a motor M1 that rotates intermittently and transports the packaging film 2 intermittently.

  Between the guide roll 3 and the intermittent feed roll 4, a heating device 5 as a heating unit and a pocket forming device 6 are arranged in parallel along the conveyance path of the packaging film 2. Then, in the state where the packaging film 2 is partially heated by the heating device 5 and the packaging film 2 becomes relatively flexible, the pocket portion 7 is formed in the packaging film 2 by the pocket forming device 6. . The pocket portion 7 is formed at an interval between transport operations of the packaging film 2 by the intermittent feed roll 4.

  The packaging film 2 fed out from the intermittent feed roll 4 is applied in the order of a tension roll 8, a guide roll 9 and a continuous feed roll 10.

  The continuous feed roll 10 is connected to a motor M2 that rotates at a constant speed, and conveys the packaging film 2 continuously and at a constant speed. The tension roll 8 is in a state in which the packaging film 2 is pulled toward the side to be tensioned by the elastic force, and prevents the packaging film 2 from being bent due to the difference in the conveying operation between the intermittent feed roll 4 and the continuous feed roll 10. Thus, the packaging film 2 is always kept in a tension state.

  Between the guide roll 9 and the continuous feed roll 10, there is disposed a tablet loading device 11 as a filling means for automatically filling the tablet B with the tablet B along the conveyance path of the packaging film 2. Yes. The tablet B supplied by natural dropping from the tablet loading device 11 is loaded into each pocket 7 for each tablet because the depth of the pocket 7 is substantially equal to the thickness of the tablet B.

  Between the tablet loading device 11 and the continuous feed roll 10, whether or not the tablet B is reliably filled in each pocket portion 7 along the transport path in the packaging film 2 and whether or not there is an abnormality in the tablet B An inspection device 12 for inspecting the presence / absence of foreign matter is provided. The inspection device 12 performs an inspection from the opening side of the pocket portion 7.

  On the other hand, the cover film 13 formed in a belt shape is wound in a roll shape on the most upstream side.

  A drawing end of the cover film 13 wound in a roll shape is guided to the continuous feed roll 10 via a guide roll 14. A sealing roll 15 having a heater is pressed against the continuous feed roll 10, and the packaging film 2 and the cover film 13 are fed between the rolls 10 and 15. Then, the packaging film 2 and the cover film 13 pass between the rolls 10 and 15 in a heat-pressed state, whereby the cover film 13 is adhered to the packaging film 2 and the tablets B are filled in the pocket portions 7. The manufactured PTP film 16 is manufactured. In the present embodiment, these rolls 10 and 15 constitute attachment means.

  The PTP film 16 delivered from the continuous feed roll 10 is hooked in the order of a tension roll 17 and an intermittent feed roll 18.

  The intermittent feed roll 18 is connected to a motor M3 that rotates intermittently and transports the PTP film 16 intermittently. The tension roll 17 is in a state in which the PTP film 16 is pulled toward the side to be tensioned by an elastic force, and prevents the PTP film 16 from being bent due to the difference in the transport operation between the continuous feed roll 10 and the intermittent feed roll 18. The PTP film 16 is always kept in tension.

  Between the continuous feed roll 10 and the tension roll 17, an inspection device 19 for inspecting whether there is an abnormality in the tablet B, whether foreign matter is mixed, or the like is disposed along the transport path of the PTP film 16. Yes. The inspection device 19 performs an inspection from the protruding surface side of the pocket portion 7. Therefore, in conjunction with the inspection by the inspection device 12, the inspection from the front and back sides of the PTP film 16 can be performed. When a defective product is determined by each of the inspection devices 12 and 19, the PTP sheet that has been determined to be defective is separately discharged by a defective sheet discharge mechanism (not shown).

  The PTP film 16 delivered from the intermittent feed roll 18 is applied in the order of the tension roll 21 and the intermittent feed roll 22.

  The intermittent feed roll 22 is connected to a motor M4 that rotates intermittently and transports the PTP film 16 intermittently. The tension roll 21 is in a state in which the PTP film 16 is pulled toward the side to be tensioned by an elastic force, and prevents the PTP film 16 from being bent between the intermittent feed rolls 18 and 22.

  Between the intermittent feed roll 18 and the tension roll 21, a slit forming device 23 and a marking device 24 are sequentially arranged along the transport path of the PTP film 16. The slit forming device 23 has a function of forming the separation slit 35 at a predetermined position of the PTP film 16. The marking device 24 has a function of marking a predetermined position (for example, a tag portion) of the PTP film 16.

  The PTP film 16 delivered from the intermittent feed roll 22 is hooked in the order of the tension roll 25 and the continuous feed roll 26 on the downstream side. Between the intermittent feed roll 22 and the tension roll 25, a sheet punching device 27 as a sheet punching unit is disposed along the transport path of the PTP film 16. The sheet punching device 27 has a function of punching the PTP film 16 in units of PTP sheets.

  The PTP sheet 28 punched by the sheet punching device 27 is conveyed by a take-out conveyor 29 and temporarily stored in a finished product hopper 30.

  On the other hand, the unnecessary film portion 32 constituting the remaining material portion (scrap portion) remaining in a strip shape after punching by the sheet punching device 27 is conveyed while being sandwiched between the continuous feed rolls 26 and guided to the cutting device 31.

  The cutting device 31 has a function of cutting the unnecessary film portion 32 into a predetermined size and scrapping. After this scrap is stored in the scrap hopper 33, it is disposed of separately.

  The feed rolls 4, 10, 18, 22 and the like have a positional relationship in which the roll surface and the pocket portion 7 face each other. Since the recess for accommodating the pocket portion 7 is formed, the pocket portion 7 is not crushed. Further, the feeding operation is performed while the pocket portion 7 is housed in the respective recesses of the feeding rolls 4, 10, 18, 22 and the like, so that the intermittent feeding operation and the continuous feeding operation are reliably performed.

  Although the outline of the PTP sheet manufacturing apparatus 1 is as described above, the configuration of the pocket forming apparatus 6 will be described more specifically below. The pocket forming apparatus 6 in this embodiment forms the pocket part 7 in the packaging film 2 by a plug assist pressure forming method.

  As shown in FIG. 4, the pocket forming apparatus 6 includes a lower mold 45 at a position below the conveyance path of the packaging film 2. The lower mold 45 is connected to driving means (not shown) via a drive transmission mechanism 46. As a result, the lower mold 45 has a working position (upper position) that can contact the packaging film 2 along the axis Z direction (vertical direction) substantially orthogonal to the surface of the packaging film 2, and the packaging film 2. It is configured to be movable to a separated standby position (downward position). In addition, as said drive means, arbitrary structures, such as a fluid pressure cylinder and a cam transmission mechanism, are employable.

  A plurality of molding recesses 45 a corresponding to the shape of the pocket portion 7 to be molded are formed on the upper surface of the lower mold 45.

  On the other hand, a chamber 50 is disposed above the transport path of the packaging film 2. The chamber 50 is connected to driving means (not shown) via a drive transmission mechanism 51. Thereby, the chamber 50 is configured to be movable along the axis Z direction between a work position (downward position) at which it can contact the packaging film 2 and a standby position (upward position) separated from the packaging film 2. Has been. In addition, as said drive means, arbitrary structures, such as a fluid pressure cylinder and a cam transmission mechanism, are employable.

  Then, the lower mold 45 and the chamber 50 are moved to their own working positions, whereby the packaging film 2 can be sandwiched.

  The chamber 50 has a box shape with an open bottom, and when the lower edge of the side wall frame 50a contacts the packaging film 2 at the working position, a sealed space (internal space) is formed therein. It is comprised so that.

  The upper wall portion 50b of the chamber 50 is formed in a flat plate shape, and a through hole 50c penetrating along the axis Z direction is formed at a substantially central portion thereof.

  A stand shaft 53 is attached and fixed to the upper surface of the upper wall portion 50b of the chamber 50 so as to correspond to the through hole 50c.

  The stand shaft 53 includes a cylindrical fixed shaft portion 53a that penetrates along the axis Z direction, and a flange portion 53b that extends from the lower end portion of the fixed shaft portion 53a to the outer peripheral side. The stand shaft 53 has a flange portion 53b fixed to the upper wall portion 50b of the chamber 50 by a fastening member 54 such as a bolt.

  A cylindrical outer cylinder 55 having a larger diameter than that of the fixed shaft portion 53a is assembled on the outer peripheral side of the fixed shaft portion 53a. More specifically, the outer cylinder 55 is formed in a cylindrical shape with an opening on the lower side, and is assembled so that the upper end side of the fixed shaft portion 53a is inserted into the inside from the lower side.

  An attachment groove 55a is formed on the inner peripheral surface of the outer cylinder 55, and a slide bearing 56 is attached to the attachment groove 55a. In this embodiment, a linear bush bearing is employed as the slide bearing 56. Of course, the present invention is not limited to this, and any other configuration may be adopted as the slide bearing 56.

  By providing the slide bearing 56, the outer cylinder 55 is supported so as to be relatively displaceable (slidable) along the axis Z direction with respect to the fixed shaft portion 53a.

  A mounting groove 55b is formed on the inner peripheral surface of the outer cylinder 55 at a position higher than the mounting groove 55a, and a packing 57 as a sealing means is attached to the mounting groove 55b. By providing the packing 57, it is possible to ensure airtightness in the chamber 50 (including a portion such as the fixed shaft portion 53a communicating with the chamber 50).

  On the other hand, on the inner peripheral side of the fixed shaft portion 53a, a cylindrical movable shaft portion 60 having a smaller diameter than the fixed shaft portion 53a is inserted in a non-contact state along the axis Z direction.

  The upper end portion of the movable shaft portion 60 is fixed to the top wall portion 55 c of the outer cylinder 55. As a result, the movable shaft portion 60 can move up and down as the outer cylinder 55 moves up and down. That is, the movable shaft portion 60 can also be relatively displaced along the axis Z direction with respect to the fixed shaft portion 53a.

  A lower end portion of the movable shaft portion 60 protrudes into the chamber 50. At the lower end portion of the movable shaft portion 60, a flange portion 60a is formed extending to the outer peripheral side. A flat heating plate 61 is fixed below the flange portion 60a as plug heating means. On the lower surface of the heating plate 61, a plurality of plugs 63 for forming the pocket portions 7 are formed so as to protrude corresponding to the forming recesses 45 a of the lower mold 45.

  A through hole 55d penetrating along the axis Z direction is formed in the top wall portion 55c of the outer cylinder 55 so as to communicate with the inside of the movable shaft portion 60. Further, a lid portion 65 is attached and fixed to the upper surface side of the top wall portion 55c of the outer cylinder 55 so as to close the through hole 55d.

  An annular mounting groove 55e is formed on the top surface of the top wall 55c of the outer cylinder 55 covered with the lid 65 so as to surround the through hole 55d, and an O-ring 66 is attached to the mounting groove 55e. ing. By providing the O-ring 66, airtightness in the chamber 50 (including a portion communicating with the chamber 50) can be ensured.

  A pair of terminal portions 67 are attached to the lid portion 65. As for each terminal part 67, the upper end part protrudes outside from the cover part 65, respectively, and a lower end part protrudes inside the movable shaft part 60. The upper end portion of the terminal portion 67 is connected to an external power source (not shown).

  One end of each wiring 68 is connected to the lower end of each terminal portion 67. The wiring 68 passes through the inside of the movable shaft portion 60, and the other end is connected to the heating plate 61. The heating plate 61 generates heat when energized through the wiring 68. Thereby, the plug 63 is heated and the moldability of the pocket part 7 is improved.

  A terminal cover 69 is attached and fixed to the upper surface side of the top wall portion 55 c of the outer cylinder 55 so as to cover the pair of terminal portions 67.

  A plurality of support columns 70 are erected on the upper wall portion 50 b of the chamber 50 so as to surround the stand shaft 53. A flat support 71 is fixed to the upper portion of the column 70.

  An air cylinder 72 as drive means is attached and fixed to the support base 71. The air cylinder 72 includes a rod 72a that can move up and down along the axis Z direction. The rod 72 a protrudes downward from the support base 71 through a through hole 71 a formed in the support base 71.

  The lower end of the rod 72a is connected to the terminal cover 69. Thereby, the terminal cover 69, the outer cylinder 55, and the movable shaft part 60 can be moved up and down along the axis Z direction in accordance with the driving of the air cylinder 72 (up and down movement of the rod 72a). The driving means for moving the movable shaft portion 60 and the like up and down is not limited to the air cylinder 72, and other actuators such as a cam mechanism may be employed.

  An air introduction port 75 for introducing high-pressure air into the chamber 50 is provided in the upper wall portion 50 b of the chamber 50. The air introduction port 75 is connected to an air supply device (not shown). When molding the pocket portion 7, high-pressure air supplied from the air supply device is introduced into the chamber 50 through the air introduction port 75.

  Now, a procedure for manufacturing the PTP sheet 28 by the PTP sheet manufacturing apparatus 1 configured as described above will be described focusing on main processes.

  The packaging film 2 first undergoes a pocket forming process. In the pocket forming step, the heating device 5 and the pocket forming device 6 described above are used.

  More specifically, first, the packaging film 2 is in a softened state in which a portion corresponding to the pocket portion 7 is partially heated by the heating device 5 and is very easily stretched.

  Next, the partially softened packaging film 2 is conveyed to the pocket forming device 6 and stops at a predetermined position. Subsequently, in the pocket forming apparatus 6, the lower mold 45 and the chamber 50 are moved from their standby positions (see FIG. 4) to the working positions, and the packaging film 2 is sandwiched.

  In this state, the air cylinder 72 is driven and the plug 63 is lowered. Thereby, the plug 63 is pressed against the softened portion of the packaging film 2, and the softened portion is stretched. Subsequently, the air supply device operates, and high-pressure air is blown into the chamber 50 through the air introduction port 75. As a result, the softened portion of the packaging film 2 is further stretched and pressed along the molding recess 45a of the lower mold 45, and the pocket portion 7 is molded.

  Thereafter, the plug 63 is raised and separated from the packaging film 2, and the lower mold 45 and the chamber 50 are returned to their standby positions, and the pocket forming process is completed.

  The packaging film 2 that has undergone the pocket molding process is subjected to a tablet loading process by the tablet loading apparatus 11. Here, the tablet B is filled in the pocket portion 7.

  The packaging film 2 filled with the tablets B is subjected to an inspection process by the inspection device 12 and then subjected to an attachment process by the continuous feed roll 10 and the seal roll 15. Here, the cover film 13 is attached to the packaging film 2, and the PTP film 16 is formed.

  Thereafter, the PTP film 16 is subjected to an inspection process by the inspection apparatus 19 and then subjected to a slit forming process by the slit forming apparatus 23. Here, slits 35 are formed in the PTP film 16.

  Subsequently, the PTP film 16 is subjected to a marking process by the marking device 24. Here, identification information such as a lot number is stamped at a position corresponding to the tag portion 38.

  When the engraving process is completed, the PTP film 16 is subjected to a sheet punching process by the sheet punching device 27. Here, the PTP sheet 16 shown in FIGS. 1 and 2 is obtained by punching the PTP film 16 in units of PTP sheets. Thereby, the manufacturing process of the PTP sheet 28 is completed.

  As described above in detail, in the present embodiment, the outer cylinder 55 supported by the slide bearing 56 with respect to the fixed shaft portion 53a moves along the axis Z direction, so that the movable shaft portion 60 fixed thereto is operated. Also, it can operate stably along the axis Z direction without being directly supported by the bearing.

  As a result, there is no need to provide a bearing between the movable shaft portion 60 for displacing the plug 63 and the fixed shaft portion 53a through which the plug 63 is inserted, and the slide bearing 56 is located on the outer peripheral side of the fixed shaft portion 53a, that is, the chamber 50. Therefore, foreign matter (dust, oil, etc.) generated from the slide bearing 56 can be prevented from flowing into the chamber 50. Can do. As a result, it can suppress that a foreign material mixes in the pocket part 7 after a shaping | molding.

  Furthermore, it is not necessary to use an oil-free bearing or the like that has been subjected to a special surface treatment, and an increase in the manufacturing cost of the pocket forming device 6 can be suppressed. In other words, since oil can be added to the slide bearing 56, wear of the slide bearing 56 and the like can be suppressed, and the life of the pocket forming apparatus 6 can be extended.

  In addition, in this embodiment, since the packing 57 is provided between the outer peripheral portion of the fixed shaft portion 53a and the inner peripheral portion of the outer cylinder 55, the foreign matter generated from the packing 57 is in the chamber 50, and thus after molding. The risk of entering into the pocket portion 7 can be reduced. In addition, since oil can be added to the sliding surface of the packing 57, wear of the packing 57 and the like can be suppressed, and the life of the pocket forming apparatus 6 can be extended.

  In the present embodiment, the movable shaft portion 60 is formed in a hollow cylindrical shape, and the wiring 68 for supplying power to the heating plate 61 is disposed in the movable shaft portion 60. Thereby, since the movable shaft portion 60 for driving the plug 63 can be used for wiring, it is not necessary to provide a plurality of movable shaft portions, and the occurrence of various problems that may occur in such a case can be suppressed.

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

  (A) The structure of the blister package to be manufactured is not limited to the PTP sheet 28 of the above embodiment.

  For example, in the above embodiment, the case where the content is the tablet B is embodied, but the type, shape, etc. of the content is not particularly limited, and for example, food, electronic parts, etc. are filled as the content. It may be a configuration. Of course, the shape, size, and the like of the pocket portion 7 formed corresponding to these contents are not limited to the above embodiment.

  Accordingly, the present invention provides a blister packaging machine for producing a portion pack of food such as jelly, coffee, milk, a blister packaging machine for packaging medical equipment such as a syringe, and a blister packaging machine for packaging small parts such as a printer cartridge. Can also be applied.

  Further, the arrangement and the number of pocket portions 7 in units of PTP sheets (blister packs) are not limited to the above embodiment (2 rows, 10 pieces), and for example, a type having 12 pocket portions 7 in 3 rows. In addition, PTP sheets (blister packs) having various arrangements and numbers can be employed.

  In FIG. 3, for the sake of convenience, the formation pitches of the pocket portions 7 in the longitudinal direction of the packaging film 2 are shown to be equally spaced. However, in the above embodiment, the formation pitches of the pocket portions 7 are equal. It is slightly different, not the interval [see FIG. 4]. Needless to say, the pockets 7 may be formed at equal intervals.

  (B) The material etc. of the packaging film 2 and the cover film 13 are not limited to the said embodiment. For example, in the above-described embodiment, the packaging film 2 is formed of PP. However, the present invention is not limited to this, and a structure formed of a metal material such as aluminum as well as a synthetic resin material such as PVC (polyvinyl chloride). It is good.

  In addition, when the packaging film 2 is formed of a metal material such as aluminum, the heating device 5 is not used, and so-called cold forming is performed. Therefore, the pocket portion 7 is not formed by the high-pressure air using the chamber 50.

  (C) In the embodiment described above, the case where the plug-assisted pressure forming method is adopted is embodied, but the embodiment is not necessarily limited to the forming method, and the pocket forming is performed using at least the plug. Just do it. Therefore, the chamber 50 may be embodied in an omitted configuration.

  (D) In the above embodiment, the entire lower surface of the chamber 50 is open. However, the present invention is not limited to this, and the chamber 50 includes a bottom wall portion, and the bottom wall portion corresponds to the plurality of plugs 63. It is good also as a structure which forms a some hole part and the plug 63 protrudes / projects from the said hole part.

  (E) In the above embodiment, the movable shaft portion 60 is configured in a hollow cylindrical shape, and the wiring 68 for supplying power to the heating plate 61 is disposed in the movable shaft portion 60. For example, when the plug 63 is not heated, a rod-shaped (solid) movable shaft portion may be employed.

  (F) In the above-described embodiment, only one set of plug driving units including the stand shaft 53, the outer cylinder 55, the movable shaft portion 60, and the like is provided in the pocket forming device 6 (for one chamber 50). However, a configuration in which a plurality of such plug drive units are provided may be employed.

  (G) Not limited to the above embodiment, the stand shaft 53 and the chamber 50 may be integrally formed. Further, the outer cylinder 55 and the movable shaft 60 may be integrally formed.

  (H) In the above embodiment, the slide bearing 56 and the packing 57 are attached to the inner peripheral surface of the outer cylinder 55. However, the present invention is not limited to this, and at least one of the slide bearing 56 and the packing 57 is a fixed shaft. The structure attached to the outer peripheral surface of the part 53a may be sufficient.

  (I) A tray member is provided on the outer peripheral portion of the fixed shaft portion 53a to receive foreign matter (foreign matter generated from the slide bearing 56 or the packing 57) that falls between the outer peripheral portion of the fixed shaft portion 53a and the inner peripheral portion of the outer cylinder 55. It is good also as a structure. Thereby, a possibility that a foreign material may be scattered can be reduced.

  DESCRIPTION OF SYMBOLS 1 ... PTP sheet manufacturing apparatus, 2 ... Packaging film, 5 ... Heating apparatus, 6 ... Pocket molding apparatus, 7 ... Pocket part, 13 ... Cover film, 16 ... PTP film, 28 ... PTP sheet, 50 ... Chamber, 53 ... Stand shaft, 53a ... fixed shaft portion, 55 ... outer cylinder, 56 ... slide bearing, 57 ... packing, 60 ... movable shaft portion, 61 ... heating plate, 63 ... plug, 68 ... wiring, 72 ... air cylinder, 75 ... air Inlet, Z ... axis.

Claims (5)

In the manufacturing process of the blister package, a pocket forming device for forming a pocket portion for containing predetermined contents into a packaging film using at least a plug,
A cylindrical fixed shaft portion fixed to a predetermined portion along a predetermined axial direction substantially orthogonal to the packaging film surface;
A movable shaft portion that is inserted into the inner peripheral side of the fixed shaft portion and that displaces the plug along the axial direction;
A cylindrical outer cylinder provided on the outer peripheral side of the fixed shaft portion so as to be relatively displaceable with respect to the fixed shaft portion along the axial direction; and
A driving means for displacing the outer cylinder and the movable shaft portion relative to the fixed shaft portion along the axial direction;
A pocket forming apparatus comprising a bearing between an outer peripheral portion of the fixed shaft portion and an inner peripheral portion of the outer cylinder. In the manufacturing process of the blister package, a pocket forming device for forming a pocket portion for containing predetermined contents into a packaging film using at least a plug,
A chamber having an internal space into which a high-pressure gas blown against the packaging film is introduced;
A cylindrical fixed shaft portion that is fixed to the chamber along a predetermined axial direction substantially orthogonal to the packaging film surface, and communicated with the chamber;
A movable shaft portion that is inserted into the inner peripheral side of the fixed shaft portion and that displaces the plug along the axial direction in the chamber;
A cylindrical outer cylinder provided on the outer peripheral side of the fixed shaft portion so as to be relatively displaceable with respect to the fixed shaft portion along the axial direction; and
A driving means for displacing the outer cylinder and the movable shaft portion relative to the fixed shaft portion along the axial direction;
A pocket forming apparatus comprising a bearing between an outer peripheral portion of the fixed shaft portion and an inner peripheral portion of the outer cylinder.   The pocket forming apparatus according to claim 2, further comprising a sealing unit between an outer peripheral part of the fixed shaft part and an inner peripheral part of the outer cylinder. A plug heating means for heating the plug is provided in the movable shaft portion,
The said movable shaft part is comprised in the hollow cylinder shape, and the wiring for supplying electric power to the said plug heating means is arrange | positioned in the said movable shaft part. Pocket molding equipment.   A blister packaging machine comprising the pocket forming apparatus according to any one of claims 1 to 4.

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