JP6778779B2 - Drug packaging equipment - Google Patents

Description

The present invention relates to a drug packaging device for packaging a drug.

A blister package may be used as one of the drug packages. Patent Document 1 discloses that a blister package is produced by using a tray having a plurality of storage recesses. The drug is distributed to each storage recess of the tray according to the prescription. A lid sheet is attached to the open surface of the tray. In such a technique of Patent Document 1, manual work such as installation of a tray and attachment of a lid sheet is required.

Therefore, it is conceivable to use a long sheet-shaped packaging material instead of the tray. In this case, the drug packaging device includes a packaging material transporting unit for transporting a long sheet-shaped packaging material, and packages the drug with the packaging material transported by the packaging material transporting unit. In such a drug packaging device, it is possible to reduce the above-mentioned manual work and automate the work related to drug packaging.

By the way, in the drug packaging device as described above, it is necessary to maintain a constant tension applied to the packaging material when the packaging material is conveyed. If the tension applied to the packaging material cannot be maintained constant, the packaging material cannot be smoothly transported, and wrinkles or the like occur in the packaging material.

However, for example, in a configuration in which the packaging material is pulled out from a roll wound with a long sheet-shaped packaging material, and a roller urged by a constant spring force is brought into contact with the drawn packaging material, the roll is used. There was a problem because the tension changed depending on the amount of winding of the packaging material.

International Publication No. 2012/070643

Therefore, an object of the present invention is to provide a drug packaging device capable of maintaining a constant tension applied to a packaging material.

The drug packaging device according to an example of the configuration of the present invention includes a packaging material transporting unit for transporting a long sheet-shaped packaging material, and the drug packaging device for packaging the drug with the packaging material transported by the packaging material transporting unit. The packaging material transporting unit includes a packaging material delivery unit that sends out the packaging material, a packaging material transfer unit that transfers the packaging material sent from the packaging material delivery unit to the downstream side in the transport direction, and the packaging material. The packaging material transfer section is located upstream of the transfer section in the transport direction of the packaging material, and intermittently transfers the packaging material by the tension applying section that applies tension to the packaging material and the packaging material transfer section. While the transfer of the packaging material is being executed, the delivery of the packaging material by the packaging material delivery unit is stopped, and while the transfer of the packaging material by the packaging material transfer unit is stopped, the packaging material delivery unit is used. A transport control unit that controls the packaging material delivery unit and the packaging material transfer unit is provided so as to execute the delivery of the packaging material.

According to an example of the above configuration, a long sheet-shaped packaging material is conveyed by the packaging material conveying unit. Then, the drug is packaged in the packaging material transported by the packaging material transport unit. The packaging material is sent out by the packaging material delivery unit. The packaging material sent out from the packaging material delivery unit is transferred to the downstream side in the transport direction by the packaging material transfer unit. The tension applying portion is located on the upstream side of the packaging material transfer portion in the transport direction of the packaging material. Tension is applied to the packaging material by this tension applying portion.
The packaging material delivery unit and the packaging material transfer unit are controlled by a transfer control unit. The transport control unit intermittently transfers the packaging material by the packaging material transfer unit. At this time, the transport control unit stops the delivery of the packaging material by the packaging material delivery unit while the packaging material is being transferred by the packaging material transfer unit. Further, the transfer control unit executes the delivery of the packaging material by the packaging material delivery unit while the transfer of the packaging material by the packaging material transfer unit is stopped. By controlling the packaging material delivery unit and the packaging material transfer unit in this way, the tension applied to the packaging material can be maintained constant.

The tension applying portion is a pressing member movably provided between the relaxation side limit position and the tension side limit position, and includes a pressing member that presses the packaging material, and the transport control portion is the relaxation side. It is also possible to control the packaging material delivery unit and the packaging material transfer unit so that the pressing member moves within a range excluding both ends between the limit position and the tension side limit position.

According to an example of the above configuration, the tension applying portion includes a pressing member. The pressing member is movably provided between the relaxation side limit position and the tension side limit position, and presses the packaging material. The transport control unit controls the packaging material delivery unit and the packaging material transfer unit so that the pressing member moves within a range excluding both ends between the relaxation side limit position and the tension side limit position. Therefore, the tension applied to the packaging material can be maintained constant.

Further, an origin detection unit for detecting whether or not the pressing member is at the origin position is further provided, and the origin position is within a range between the relaxation side limit position and the tension side limit position excluding both ends. The transport control unit can also control the delivery of the packaging material by the packaging material delivery unit based on the detection result by the origin detection unit.

According to an example of the above configuration, the drug packaging device further includes an origin detection unit that detects whether or not the pressing member is at the origin position. The origin position of the pressing member is set within a range between the relaxation side limit position and the tension side limit position, excluding both ends. The transport control unit controls the delivery of the packaging material by the packaging material delivery unit based on the detection result by the origin detection unit. Therefore, with a simple configuration, the pressing member can be moved to a position with reference to the origin position within the range, and the difference amount can be adjusted to 0.

Then, the pressing member can also press the packaging material by spring urging.

According to an example of the above configuration, the pressing member presses the packaging material by spring urging. Therefore, tension can be applied to the packaging material with a simple structure.

Then, the packaging material delivery unit may also be provided with means for forcibly delivering the packaging material.

According to an example of the above configuration, the packaging material delivery unit includes means for forcibly delivering the packaging material. Therefore, the packaging material can be reliably delivered without depending on the tension applied to the packaging material by the tension applying portion.

Then, the packaging material delivery unit is rotatably provided around a predetermined axis, and the roll-shaped body formed by winding the packaging material coincides with the predetermined axis and the axis of the roll-shaped body. It is also possible to include a holding shaft portion that holds the holding shaft portion in a state of being held, and a rotation driving portion that rotates the holding shaft portion around the predetermined axis as a means for forcibly sending out the packaging material.

According to an example of the above configuration, the packaging material delivery portion includes a holding shaft portion and a rotation driving portion. The holding shaft portion is rotatably provided around a predetermined axis. The holding shaft portion holds the roll-shaped body formed by winding the packaging material in a state where the predetermined axis and the axis of the roll-shaped body are aligned with each other. The rotation drive unit rotates and drives the holding shaft unit around the predetermined axis as a means for forcibly sending out the packaging material. Therefore, the packaging material can be forcibly sent out with a simple structure.

The rotation drive unit can also limit the rotation of the holding shaft unit.

According to an example of the above configuration, the rotation drive unit can limit the rotation of the holding shaft portion. Therefore, the delivery of the packaging material can be restricted by the rotation drive unit. Therefore, it is not necessary to separately provide a configuration for limiting the delivery of the packaging material. Therefore, the configuration can be simplified.

Then, the packaging material delivery unit can pull back the packaging material, and the transport control unit is wrapped by the packaging material delivery unit when the pressing member is at the relaxation side limit position in the initial operation. By pulling back the material, the pressing member is moved to the origin position, and when the pressing member is not at the relaxation side limit position, first, the packaging material is sent out by the packaging material delivery portion to push the pressing member. The pressing member can also be moved to the origin position by moving it to the relaxation side limit position and then pulling back the packaging material by the packaging material delivery portion.

According to an example of the above configuration, the present invention can maintain a constant tension applied to the packaging material.

It is a figure which shows the outline of the structure of the drug packaging apparatus which concerns on one Embodiment of this invention. It is a front side perspective view which shows the packaging sheet holding part (tension applying part) in the drug packaging apparatus. It is a perspective view of the back side which shows the packing sheet holding part (tension applying part) in the drug packaging apparatus. It is a front view which shows the packaging sheet holding part (tension applying part) in the drug packaging apparatus. It is a block diagram which shows the packing sheet holding part in the drug packaging apparatus. It is a flow chart about the transport operation of the packaging sheet in the drug packaging apparatus. Of the flows of FIG. 6, it is a flow diagram relating to an initial operation. Of the flows of FIG. 6, it is a flow chart relating to a sending operation.

Next, the present invention will be described by taking up one embodiment. The drug packaging device 1 of the present embodiment automatically wraps the drug M using the packaging sheet 3 and the lid sheet 4, which are long sheet-shaped packaging materials, which are transported by the packaging material transport unit 10. This is an apparatus for forming the drug package P.

As shown in FIG. 1, the drug packaging device 1 includes a packaging sheet holding section 11, a packaging sheet supply section 12, a recess forming section 13, a drug supply section 14, a drug charging section 15, a lid sheet holding section 16, and a lid. A sheet supply unit 17, a lid sheet adhesive unit 18, a cutting unit 19, and a printing unit 20 are provided. Each unit is controlled by a control unit (not shown).

Further, the packaging material transporting unit 10 includes a packaging material sending unit (in this embodiment, a packaging sheet holding unit 11 and a lid sheet holding unit 16) for delivering the packaging materials 3 and 4, and a packaging material sent from the packaging material sending unit. The packaging material transfer section (in this embodiment, the packaging sheet supply section 12 and the lid sheet supply section 17) for transferring the materials 3 and 4 to the downstream side in the transport direction, and the packaging materials 3 and 4 rather than the packaging material transfer section. Tension applying portions 11X and 16X, which are located on the upstream side in the transport direction and apply tension to the packaging materials 3 and 4, and the packaging material transfer portions intermittently transfer the packaging materials 3 and 4 and the packaging materials 3 and 4. In order to maintain the tension of 4 at a constant level for each intermittent transfer, at least a transfer control unit 10X for controlling the packaging material delivery unit is provided. In this embodiment, the transfer control unit 10X is configured as a part of the control unit.

The packaging sheet holding unit 11 constitutes a part of the packaging material delivery unit and holds the flat packaging sheet 3. The packaging sheet 3 is a resin sheet. As the packaging sheet 3 of the present embodiment, for example, a thermoplastic resin sheet is used. The packaging sheet 3 has a long strip shape, and is held in a rolled roll-shaped body 3a so as to be able to be sent out to the packaging sheet holding portion 11. The width direction dimension of the packaging sheet 3 is a dimension in which one recess 31 can be formed. Further, the packaging sheet 3 of the present embodiment is transparent. Therefore, the drug M stored in the recess 31 can be easily visually recognized from the outside in the state after packaging. Although a transparent packaging sheet 3 is used in the present embodiment, the packaging sheet 3 does not necessarily have to be transparent. The packaging sheet 3 may be, for example, translucent or opaque.

Since the flat packaging sheet 3 can be used in the present embodiment, the packaging sheet 3 in a rolled state can be held by the packaging sheet holding unit 11. That is, the packaging sheet holding unit 11 can hold the packaging sheet 3 in an amount capable of forming a large number of drug packages P at one time. Therefore, it is not necessary to manually set the trays having the storage recesses one by one as in the conventional case. Therefore, the operator of the drug packaging device is freed from complicated work. The "flat" includes a form in which irregularities and patterns that do not interfere with the formation of the recess 31 by the recess forming portion 13 described later are formed.

The packaging sheet supply unit 12 constitutes a part of the packaging material transfer unit, and supplies the packaging sheet 3 from the packaging sheet holding unit 11 in the longitudinal direction. The packaging sheet 3 is supplied by intermittently transferring the packaging sheet 3 to the downstream side in the packaging sheet supply unit 12 (specific configuration is not shown). In this embodiment, the roller 121 shown in FIG. 1 is not driven, and only supports the packaging sheet 3. In order to adjust the tension of the packaging sheet 3 transferred by the packaging sheet supply unit 12, a tension applying unit 11X is provided between the packaging sheet holding unit 11 and the packaging sheet supply unit 12. The detailed configuration of the tension applying portion 11X will be described later. The supply of the packaging sheet 3 is stopped when the recess 31 is formed in the packaging sheet 3 by the molding die 133 described later. Therefore, the supply is made intermittently. The packaging sheet supply unit 12 can form the automatically supplied packaging sheet 3 and then add the drug M, so that the packaging sheet 3 can be easily packaged. As a means for supplying the packaging sheet 3, for example, a means for sandwiching and pulling the packaging sheet 3 can be adopted, and various means such as an arm and a rubber plate can also be adopted. .. In addition, the packaging sheet 3 can be supplied by a driven roller.

The recess forming portion 13 forms a plurality of recesses 31 ... 31 in the packaging sheet 3 supplied by the packaging sheet supply section at predetermined intervals in the longitudinal direction. The recess forming portion 13 includes a hot plate 131, a receiving portion 132, and a molding die 133.

The hot plate 131 and the receiving portion 132 face each other with the packaging sheet 3 to be conveyed interposed therebetween, and the opposing surfaces thereof are flat. The hot plate 131 is located below the packaging sheet 3, and the receiving portion 132 is located above. The arrangement of the hot plate 131 and the receiving portion 132 with respect to the packaging sheet 3 may be reversed. The hot plate 131 has a built-in heater. The receiving portion 132 is made of resin, and this embodiment is made of rubber. The receiving portion 132 may be another hot plate having a built-in heater. The hot plate 131 and the receiving portion 132 are driven by an electric motor so that they can approach and separate from the packaging sheet 3. The drive source for driving the hot plate 131 and the receiving portion 132 is not limited to the electric motor. The drive source of the hot plate 131 and the receiving portion 132 may be such that the hot plate 131 and the receiving portion 132 can be brought close to each other and separated from the packaging sheet 3. The drive source of the hot plate 131 and the receiving portion 132 may be, for example, an air cylinder or a hydraulic cylinder. The packaging sheet 3 can be softened by the hot plate 131 and the receiving portion 132 approaching each other so as to sandwich the packaging sheet 3 in a state where the heater is energized and the hot plate 131 is heated.

The hot plate 131 and the receiving portion 132 are formed in the longitudinal direction to the dimensions of two packages (two recesses 31). On the other hand, the packaging sheet 3 moves intermittently so that the recess 31 is molded for each package (one recess 31) in the molding die 133. With this intermittent movement, the packaging sheet 3 is heated twice and then supplied to the molding die 133. Therefore, so to speak, the first heating is "preheating" and the second heating is "main heating", so that the packaging sheet 3 can be sufficiently softened due to the formation of the recess 31. The hot plate 131 and the receiving portion 132 do not necessarily have to be formed in the dimensions of two packages (two recesses 31) in the longitudinal direction. If the packaging sheet 3 is sufficiently softened by one heating, the hot plate 131 and the receiving portion 132 may be formed in the longitudinal direction to the size of one package (one recess 31). If the packaging sheet 3 is not sufficiently softened by two heatings, the hot plate 131 and the receiving portion 132 may be formed in the longitudinal direction to have dimensions of three or more packages (three recesses 31). ..

The molding die 133 is located on the downstream side of the hot plate 131 and the receiving portion 132 in the sheet transport direction. The molding die 133 includes a female die 133a located below the packaging sheet 3 to be conveyed, a male die 133b located above the same, and a pressing plate 133c. The female mold 133a and the male mold 133b have a shape corresponding to the recess 31 so that the recess 31 having a desired diameter and size can be formed. The recess 31 formed in the present embodiment has a circular cross-sectional shape, and as shown in the figure, the concave portion 31 has a shape in which the diameter dimension decreases toward the bottom. A plurality of suction holes (not shown) are formed on the concave molding surface of the female mold 133a.

The female mold 133a, the male mold 133b, and the holding plate 133c are driven by an electric motor so that they can approach and separate from the packaging sheet 3. The drive source for driving the female type 133a, the male type 133b, and the holding plate 133c is not limited to the electric motor. The drive source of the female mold 133a, the male mold 133b, and the presser plate 133c may be such that the female mold 133a, the male mold 133b, and the presser plate 133c can be brought close to and separated from the packaging sheet 3. The drive source of the female type 133a, the male type 133b, and the holding plate 133c may be, for example, an air cylinder or a hydraulic cylinder.

The male mold 133b and the pressing plate 133c approach the female mold 133a so as to sandwich the packaging sheet 3 softened by the hot plate 131. By sucking air from the plurality of suction holes while the packaging sheet 3 is sandwiched between the female mold 133a and the pressing plate 133c, a recess 31 recessed downward is formed in the packaging sheet 3. In this state, by further fitting the male mold 133b to the female mold 133a, the recess 31 having a desired shape is surely formed. The male type 133b does not necessarily have to be provided. If the recess 31 having a desired shape can be formed by sucking air from the plurality of suction holes of the female mold 133a, the male mold 133b may be omitted.

The molding die 133 of the present embodiment is provided with one set, and is configured to form one recess 31 at one time (one cycle of vertical movement between the female die 133a and the male die 133b), but for packaging. By arranging a plurality of sets of molding dies 133 in parallel along the longitudinal direction of the sheet 3 or in the width direction of the packaging sheet 3 (front and back directions in FIG. 1), a plurality of recesses 31 ... 31 are formed at one time. You can also.

The drug supply unit 14 temporarily stores the drug M, and supplies the drug M to the drug input unit 15 according to the prescription data (for example, for each dose). The drug supply unit 14 has a storage unit 141 that temporarily stores the drug M, and can selectively supply the drug M from the storage unit 141 under the control of a control unit (not shown). The storage portion 141 is a storage cassette for tablets, a distribution basin in which a plurality of recesses are arranged in a matrix, and a basin with V-shaped recesses in a vertical cross section for powders, or a disk shape. An example is a powder distribution device formed in the above and configured to scrape powder according to prescription data. However, the drug supply unit 14 is not limited to these illustrated forms, and can be implemented in various forms. The storage unit 141 can be composed of, for example, a plurality of type-specific storage units for storing the drug M for each type, or a plurality of dose-specific storage units for storing the drug M for each dose. Is. In this case, the drug M can be stored in the drug supply unit 14 in a state suitable for supplying the drug M for each type or each dose. When the drug M is stored for each type by the type-specific storage unit, the drug M can be easily replenished. Further, when the drug M is stored for each dose by the storage unit for each dose, it can be supplied to the drug charging unit 15 in the stored state.

The drug supply unit 14 of the present embodiment can handle drugs of various dosage forms. Examples include tablets, capsules and powders. Further, although the present embodiment is configured to handle only a solid drug, it is also possible to handle a liquid or gel-like drug in some cases.

The drug charging unit 15 charges the drug M into each recess 31 formed in the packaging sheet 3 by the recess forming portion 13. The drug charging section 15 of the present embodiment is configured as an upwardly spreading hopper as shown in the figure, and is located below the drug feeding section 14. When handling a liquid drug, the drug charging section 15 is formed in a shape suitable for pouring, such as a nozzle shape.

The lid sheet holding portion 16 constitutes a part of the packaging material delivery portion and holds the flat lid sheet 4. A resin sheet is used as the lid sheet 4 of the present embodiment. The lid sheet 4 has a long strip shape, and is held in a rolled roll-shaped body 4a so as to be able to be sent out to the lid sheet holding portion 16. The lid sheet 4 has a width capable of covering the opening of the recess 31 formed in the packaging sheet 3. The width of the lid sheet 4 of the present embodiment is the same as the width of the packaging sheet 3. Paper can also be used as the lid sheet 4. The paper may be coated with a resin.

The lid sheet supply unit 17 forms a part of the packaging material transfer unit, and the lid sheet 4 for closing the opening of the recess 31 is formed, and the recesses 31 ... 31 are formed, and the drug M is charged into each recess 31. It is supplied to the packaging sheet 3 in the finished state. The lid sheet supply unit 17 supplies the lid sheet 4 to the upper surface of the packaging sheet 3. In the present embodiment, the lid sheet supply unit 17 supplies the lid sheet 4 to the packaging sheet 3 from above. The lid sheet supply unit 17 may supply the lid sheet 4 to the packaging sheet 3 from the side or from below. The lid sheet supply unit 17 supplies the lid sheet 4 from the lid sheet holding unit 16 in the longitudinal direction. The lid sheet 4 is supplied by intermittently transferring the lid sheet 4 to the downstream side in the lid sheet supply unit 17 (the same portion as the packaging sheet supply unit 12 in the present embodiment) (specific configuration is: Not shown). In this embodiment, the plurality of rollers 171 ... 171 shown in FIG. 1 are not driven, and only the lid sheet 4 is supported. In order to adjust the tension of the lid sheet 4 transferred by the lid sheet supply unit 17, the lid sheet holding unit 16 is provided with a tension applying unit 16X. In the present embodiment, the packaging sheet 3 and the lid sheet 4 are pulled by a common roller. The supply is stopped when the lid sheet 4 is adhered to the packaging sheet 3 by the lid sheet adhesive portion 18 described later. Therefore, the supply is made intermittently. The supply of the lid sheet 4 intermittently is synchronized with the supply of the packaging sheet 3. As a means for supplying the lid sheet 4, for example, a means for sandwiching and pulling the lid sheet 4 can be adopted, or various means such as an arm and a rubber plate can be adopted.

The lid sheet adhesive portion 18 adheres the lid sheet 4 supplied by the lid sheet supply unit 17 to the packaging sheet 3 in a closed state by covering the opening of the recess 31 with the lid sheet 4. The lid sheet adhesive portion 18 includes a hot plate 181 and a receiving portion 182. The hot plate 181 and the receiving portion 182 face each other with the lid sheet 4 to be transported and the portion of the packaging sheet 3 where the recess 31 is not formed, and the facing surfaces thereof are flat. .. The hot plate 181 is located above the lid sheet 4, and the receiving portion 182 is located below. A heater is built in the hot plate 181. The receiving portion 182 is made of resin, and this embodiment is made of rubber. The receiving portion 182 may be another hot plate having a built-in heater. The hot plate 181 and the receiving portion 182 are driven by an electric motor so that they can approach and separate from the lid sheet 4 and the packaging sheet 3. The drive source for driving the hot plate 181 and the receiving portion 182 is not limited to the electric motor. The drive source of the hot plate 181 and the receiving portion 182 may be such that the hot plate 181 and the receiving portion 182 can be brought close to each other and separated from the lid sheet 4 and the packaging sheet 3. The drive source of the hot plate 181 and the receiving portion 182 may be, for example, an air cylinder or a hydraulic cylinder. Although not shown, the receiving portion 182 is formed with a recess into which the recess 31 is fitted so that the receiving portion 182 and the recess 31 do not interfere with each other. In the present embodiment, a circular hole is formed as a recess in the center of the receiving portion 182 so as not to interfere with the recess 31 when the receiving portion 182 moves upward. When the hot plate 181 is heated and the hot plate 181 and the receiving portion 182 sandwich the lid sheet 4 and the packaging sheet 3, the lid sheet 4 is adhered (heat-sealed) to the packaging sheet 3 and the drug is used. The package P is formed. By this adhesion, the medicine M charged into the recess 31 is prevented from leaking from the recess 31. The lid sheet adhesive portion 18 can also bond the lid sheet 4 and the packaging sheet 3 by interposing an adhesive between the lid sheet 4 and the packaging sheet 3.

The cutting portion 19 cuts the packaging sheet 3 to which the lid sheet 4 is adhered together with both sheets 3 and 4 at one or a plurality of doses. The cutting portion 19 of the present embodiment includes cutting blades 191 and 191 which are located above and below the packaging sheet 3 and are movable so that the cutting edges overlap. As a result, the drug package P is separated into units that are easy for the patient to take. Therefore, it is possible to obtain a drug package P that is grouped in units of one or a plurality of doses.

By changing the shape of the cutting blade 191, perforations can be formed on the packaging sheet 3 and the lid sheet 4. By forming the perforations in this way, the drug package P can be appropriately cut at the convenience of the patient, so that the patient's usability is improved when taking the drug package P or storing the drug package P. In addition to the perforations, it is also possible to form a fragile portion having a lower rigidity or a thinner plate thickness than other portions so as to assist the patient in cutting the drug package P.

The printing unit 20 prints information according to the prescription data on the lid sheet 4. Since printing can be performed in a series of steps by the printing unit 20, it is possible to easily form the drug package P up to a state where it can be delivered to the patient. The printed contents include the patient's name, the date of administration, the day of the week, and the timing of administration (after meal, before meal, between meals, etc.). In the present embodiment, printing is performed on the lid sheet 4 before being adhered to the packaging sheet 3. Therefore, the printing unit 20 is located above the transport line of the packaging sheet 3. Printing can also be performed on the lid sheet 4 after being adhered to the packaging sheet 3. As a printing method, a method of thermal transfer using an ink ribbon can be exemplified, but various methods such as an inkjet method can be adopted.

Next, the packaging sheet holding portion 11 and the tension applying portion 11X will be described. Since the lid sheet holding portion 16 and the tension applying portion 16X have the same configuration, the packaging sheet holding portion 11 and the tension applying portion 11X will be described as representatives.

The packaging sheet holding portion 11 and the tension applying portion 11X are configured as shown in FIGS. 2 to 5. The packaging sheet holding portion 11 and the tension applying portion 11X are provided on the base portion 111. The packaging sheet holding portion 11 includes a holding shaft portion 112 and a rotation driving portion 115. The tension applying portion 11X includes a dancer roller 114 and an arm 116 as pressing members (note that the tension applying portion 16X for the lid sheet 4 includes a dancer roller 161 as shown in FIG. 1 (other components are shown in the drawing). Omitted)).

The holding shaft portion 112 is rotatably provided with respect to the base portion 111 around a predetermined axis. The holding shaft portion 112 holds the roll-shaped body 3a. The predetermined axis and the axis of the roll-shaped body 3a coincide with each other. The holding shaft portion 112 holds the roll-shaped body 3a so that the holding shaft portion 112 and the roll-shaped body 3a do not rotate relatively and the roll-shaped body 3a does not fall off from the holding shaft portion 112. In the present embodiment, as shown in FIG. 2 or 4, a pressing plate 1121 is detachably provided on the front side of the holding shaft portion 112, and the holding shaft portion 112 is rolled into a roll shape by pressing the pressing plate 1121. Body 3a is held. Further, as shown in FIG. 3, a driven gear 1122 is connected to the back surface side of the holding shaft portion 112.

The arm 116 is rotatably provided. In this embodiment, the arm 116 is attached to the holding shaft portion 112. Therefore, the arm 116 can rotate around the same axis as the axis of the holding shaft portion 112. The rotation range corresponds to the movement range of the dancer roller 114 with respect to the curved elongated hole 117 penetrating the base portion 111. However, this arm 116 is in a free state without being interlocked with the rotation of the holding shaft portion 112, and is urged downward by the weight of the arm 116 and the dancer roller 114.

The base portion 111 is provided with a fixed roller 113. The fixed roller 113 is rotatable with respect to the base portion 111. The rotation axis of the fixed roller 113 is parallel to the rotation axis of the holding shaft portion 112. As shown in FIG. 4, the fixed roller 113 supports the packaging sheet 3 sent out from the roll-shaped body 3a up to the dancer roller 114. By providing such a fixed roller 113, the packaging sheet 3 can be stably supported by the dancer roller 114 regardless of the amount of winding of the packaging sheet 3 in the roll-shaped body 3a.

The dancer roller 114 is movably provided between the relaxation side limit position and the tension side limit position, and presses the packaging sheet 3. In the present embodiment, the dancer roller 114 is supported by the arm 116 from the back surface side, and can move in the upward direction 114u and the downward direction 114d shown in FIG. 4 in the curved elongated hole 117 penetrating the base portion 111. Provided. The relaxation side limit position is the lower end position of the curved elongated hole 117, and the tension side limit position is the upper end position of the curved elongated hole 117. The dancer roller 114 is rotatable, and the rotation axis is parallel to the rotation axis of the holding shaft portion 112. Since the dancer roller 114 can move up and down, the packaging sheet 3 is pressed from above by the weight of the dancer roller 114 and the arm 116. Therefore, tension can be applied to the packaging sheet 3 with a simple structure. The dancer roller 114 may be configured to press the packaging sheet 3 by spring bias.

As shown in FIG. 3, on the back surface side of the base portion 111, a lower end sensor 118a, an origin sensor 118b as an origin detecting portion, and an upper end sensor 118c are provided along the curved elongated hole 117. The lower end sensor 118a is provided corresponding to the relaxation side limit position of the dancer roller 114. The upper end sensor 118c is provided corresponding to the tension side limit position of the dancer roller 114. The origin sensor 118b is provided at the origin position. This origin position is set within a range between the relaxation side limit position and the tension side limit position, excluding both ends. In the present embodiment, the initial position of the dancer roller 114 is the origin position, which is a reference position for feeding the packaging sheet 3 described later. The origin sensor 118b detects whether or not the dancer roller 114 is at the origin position. The sensors 118a to 118c detect the dog 116a provided on the back surface of the arm 116.

According to the detection of the lower end sensor 118a, all the packaging sheets 3 were sent out from the roll-shaped body 3a and the sheets were cut, or the packaging sheets 3 were cut (in these cases, the dancer roller 114 is under its own weight. It can be seen that the lower end of the curved elongated hole 117 (falls to the limit position on the relaxation side)). Further, according to the detection of the upper end sensor 118c, it can be seen that the packaging sheet 3 is abnormally pulled.

The rotation drive unit 115 is a means for forcibly feeding out the packaging sheet 3 and rotates the holding shaft unit 112 around the predetermined axis. The rotation drive unit 115 includes a motor 1151 and a drive force transmission unit for transmitting the drive force of the motor 1151 to the holding shaft unit 112. In the present embodiment, the driving force transmission unit is a transmission gear 1152 that transmits a driving force between the gear of the motor 1151 and the driven gear 1122 of the holding shaft portion 112. The driving force transmission unit may be a belt. In this case, a drive pulley is fixed to the output shaft of the motor 1151, a driven pulley is fixed to the holding shaft portion 112, and a belt is hung on these drive pulley and the driven pulley. By providing the means for forcibly sending out the packaging sheet 3 in this way, the packaging sheet 3 can be reliably sent out to the downstream side without depending on the tension on the packaging sheet 3 by the tension applying portion 11X. .. Further, by combining the holding shaft portion 112 and the rotation driving portion 115, the packaging sheet 3 can be forcibly sent out with a simple configuration.

The motor 1151 of the present embodiment is excited during the operation of the packaging material transport unit 10, and when the packaging sheet 3 is transferred by the packaging sheet supply unit 12, the holding shaft portion 112 and the roll-shaped body 3a Acts as a brake (braking means). That is, the rotation drive unit 115 can limit the rotation of the holding shaft unit 112. Therefore, it is not necessary to separately provide a configuration for restricting the delivery of the packaging sheet 3. Therefore, the configuration can be simplified.

On the other hand, when the packaging sheet 3 is sent out from the roll-shaped body 3a in order to return the dancer roller 114 to the origin position, the motor 1151 rotates the holding shaft portion 112. With the rotation of the holding shaft portion 112, the weight of the dancer roller 114 itself and the arm 116 on the dancer roller 114 causes the packaging sheet 3 hooked on the dancer roller 114 to loosen by the amount sent out, so that the arm 116 Rotate.

The transport control unit 10X controls the packaging material transfer unit to intermittently transfer the packaging sheet 3. Further, the packaging sheet holding unit 11 which is the packaging material delivery unit is controlled as follows.

While the packaging sheet supply unit 12 is executing the intermittent transfer of the packaging sheet 3, the packaging sheet holding unit 11 is used for packaging by limiting the feeding of the packaging sheet 3 by the rotation driving unit 115. The delivery amount of the packaging sheet 3 is made smaller than the transfer amount of the packaging sheet 3 by the packaging sheet supply unit 12. This limitation is achieved by the motor 1151 acting as a brake by being excited as described above. Therefore, there is a difference between the transfer amount of the packaging sheet 3 by the packaging sheet supply unit 12 (relatively large) and the delivery amount of the packaging sheet 3 by the packaging sheet holding unit 11 (relatively small). Occurs.

Since the packaging sheet 3 is pulled to the downstream side in the transport direction according to the difference amount due to the difference, the dancer roller 114 rises in the curved elongated hole 117 in the upward direction 114u shown in FIG. To do. As a result, the dancer roller 114 deviates from the origin position which was the initial position. The origin sensor 118b is in the non-detection state.

On the other hand, while the intermittent transfer of the packaging sheet 3 by the packaging sheet supply unit 12 is stopped, the motor 1151 of the rotation drive unit 115 is driven to drive the packaging sheet 3 by the packaging sheet supply unit 12. The packaging sheet holding unit 11 delivers the packaging sheet 3 by the difference amount with respect to the transferred amount. As a result, the difference amount is adjusted to 0. As a result, the transfer amount of the packaging sheet 3 by the packaging sheet supply unit 12 and the delivery amount of the packaging sheet 3 by the packaging sheet holding unit 11 are completely matched for each intermittent transfer. Therefore, the tension applied to the packaging sheet 3 can be maintained constant.

In sending out the difference amount, the transport control unit 10X uses the dancer roller 114 according to the difference amount in the range between the relaxation side limit position and the tension side limit position in the curved elongated hole 117 except for both ends. The packaging sheet holding portion 11 is controlled so as to move. Specifically, the transport control unit 10X controls the delivery of the packaging sheet 3 by the packaging sheet holding unit 11 based on the detection result by the origin sensor 118b. The control of feeding out the packaging sheet 3 is performed so as to return the dancer roller 114 to the origin position by detecting the origin sensor 118b.

While the wrapping sheet supply unit 12 is executing the intermittent transfer of the wrapping sheet 3, the amount of the wrapping sheet 3 sent out by the wrapping sheet holding unit 11 is set to 0, that is, the wrapping sheet 3 It is preferable to stop the delivery. In this way, the transfer of the packaging sheet 3 by the packaging sheet supply unit 12 and the delivery of the packaging sheet 3 by the packaging sheet holding unit 11 are executed separately in time, whereby the packaging sheet 3 can be easily carried out. The tension applied to the package can be kept constant. In particular, when the packaging sheet 3 is transferred by the packaging sheet supply unit 12, the tension applied to the packaging sheet 3 can be kept constant.

Next, the operation will be described with reference to FIGS. 6 to 8 which are flow charts. The flow shown in FIG. 6 relates to the overall transport operation of the packaging sheet 3. First, the initial operation is started (step S1). Next, it is determined whether or not the number of packages actually packaged has reached the number of packages specified in advance (step S2). If it has reached, the transport operation is terminated. If it has not been reached, it is determined whether or not all the predetermined operations prior to the packaging of the drug M have been completed (step S3). Specifically, the predetermined operation is an operation of each part including the recess forming portion 13, the lid sheet adhesive portion 18, and the cutting portion 19. The predetermined operation includes a returning operation of the packaging sheet supply unit 12 and an operation of sending out the packaging materials 3 and 4 by the packaging sheet holding unit 11 and the lid sheet holding unit 16. If the predetermined operation is not completed, step S3 is repeated. When the process is completed, the packaging sheet supply unit 12, which is the packaging material transfer unit, starts the operation of transferring the packaging sheet 3 (step S4). At this time, the feeding of the packaging sheet 3 by the rotation driving unit 115 is restricted. Next, it is determined whether or not all the transfer operations have been completed (step S5). If it is not completed, step S5 is repeated. When it is completed, the return operation (operation for preparing for the next intermittent transfer) related to the packaging sheet supply unit 12 which is the packaging material transfer unit is started (step S6). Next, the feeding operation by the packaging sheet holding unit 11 which is the packaging material sending unit is started (step S7). Then, the process returns to step S2.

FIG. 7 shows a flow related to the initial operation (step S1) shown in FIG. First, it is determined whether or not the dancer roller 114 is in the relaxation side limit position (step S11). When the position is at the limit position on the relaxation side, the motor 1151 of the rotation drive unit 115 is driven to start pulling back (moving the dancer roller 114 upward) (step S12). Next, it is determined whether or not the dancer roller 114 has reached the origin position (step S13). If it is not at the origin position, step S13 is repeated. If it has reached the origin position, the pullback is finished (step S14). This ends the initial operation.

If the position is not at the relaxation side limit position in step S11, the motor 1151 of the rotation drive unit 115 is driven to feed the packaging sheet 3 from the roll-shaped body 3a (step S15). Next, it is determined whether or not the dancer roller 114 is in the relaxation side limit position (step S16). If the position is not at the relaxation side limit position, step S16 is repeated. When the position is at the limit position on the relaxation side, the delivery is completed (step S17), and the process proceeds to step S12.

As described above, in the initial operation, the dancer roller 114 is once moved from the relaxation side limit position to the origin position. Therefore, the dancer roller 114 can be reliably arranged at the origin position regardless of the initial position of the dancer roller 114.

FIG. 8 shows a flow related to the delivery operation (step S7) shown in FIG. First, the motor 1151 of the rotation driving unit 115 is driven to send out the packaging sheet 3 from the roll-shaped body 3a (step S71). Next, it is determined whether or not the dancer roller 114 is at the origin position (step S72). If it is not at the origin position, step S72 is repeated. When it is in the origin position (that is, when the dancer roller 114 returns to the origin position), the delivery is terminated (step S73). This ends the sending operation.

According to the drug packaging device 1 of the present embodiment configured as described above, it is possible to automatically supply a packaging sheet, form a plurality of recesses, and charge a drug. Therefore, blister packaging can be easily performed.

In particular, according to the drug packaging device 1 of the present embodiment, the packaging material (packaging sheet 3, lid in the present embodiment) by the packaging material transfer unit (packaging sheet supply unit 12 and lid sheet supply unit 17 in the present embodiment). A difference amount is once generated between the transfer amount of the sheet 4) and the delivery amount of the packaging material by the packaging material delivery unit (the packaging sheet holding unit 11 and the lid sheet holding unit 16 in this embodiment), and this difference amount is later set to 0. By adjusting to, the amount of packaging material transferred by the packaging material transfer unit and the amount of packaging material sent out by the packaging material delivery unit will be completely the same for each intermittent transfer. Such tension can be maintained constant.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

For example, in the above embodiment, the tension is maintained constant by feeding out the packaging sheet 3 (lid sheet 4) as the packaging material so that the dancer roller 114 (161) as the pressing member is aligned with the origin position. , The pressing member may not be provided by separately providing a reference means for sending out the packaging material.

1 Chemical packaging device 10 Packaging material transport unit 10X Transport control unit 11 Packaging material delivery unit, packaging sheet holding unit 11X Tension applying unit 112 Holding shaft unit 114 Pressing member, dancer roller 115 Means for forcibly delivering packaging material, rotation Drive unit 118b Origin detection unit 12 Packaging material transfer unit, packaging sheet supply unit 13 Recess formation unit 14 Drug supply unit 15 Drug injection unit 16 Packaging material delivery unit, lid sheet holding unit 16X Tension application unit 161 Pressing member, dancer roller 17 Packaging material transfer part, lid sheet supply part 18 lid sheet adhesive part 19 cutting part 20 printing part 3 packaging material, packaging sheet 3a roll-shaped body 31 recess 4 packaging material, lid sheet 4a roll-shaped body M drug

Claims (7)

A drug packaging device provided with a packaging material transporting unit for transporting a long sheet-shaped packaging material, and packaging a drug with the packaging material conveyed by the packaging material transporting unit.
The packaging material transport unit is
The packaging material delivery unit that sends out the packaging material,
A packaging material transfer unit that transfers the packaging material sent out from the packaging material delivery unit to the downstream side in the transport direction, and a packaging material transfer unit.
A tension applying portion that is located on the downstream side of the packaging material delivery section in the transport direction of the packaging material and on the upstream side of the packaging material transfer section in the transport direction of the packaging material and applies tension to the packaging material.
A transport control unit that controls the packaging material delivery unit and the packaging material transfer unit is provided.
The tension applying portion is a pressing member movably provided between a relaxation side limit position and a tension side limit position, and includes a pressing member that presses the packaging material.
The transport control unit
The packaging material delivery unit and the packaging material transfer unit are controlled so that the pressing member moves within a range excluding both ends between the relaxation side limit position and the tension side limit position.
While the packaging material is intermittently transferred by the packaging material transfer unit in a state where tension is applied to the packaging material by the tension applying unit, and the packaging material is transferred by the packaging material transfer unit, the above-mentioned The packaging material so as to execute the delivery of the packaging material by the packaging material delivery unit while the delivery of the packaging material by the packaging material delivery unit is stopped and the transfer of the packaging material by the packaging material transfer unit is stopped. sending unit and medicine packaging device comprising a benzalkonium controls the packaging material transport unit. Further provided with an origin detection unit for detecting whether or not the pressing member is at the origin position,
The origin position is set within a range between the relaxation side limit position and the tension side limit position, excluding both ends.
The drug packaging device according to claim 1 , wherein the transport control unit controls the delivery of the packaging material by the packaging material delivery unit based on the detection result by the origin detection unit. The drug packaging device according to claim 1 , wherein the pressing member presses the packaging material by spring urging. The drug packaging device according to claim 1, wherein the packaging material delivery unit includes means for forcibly delivering the packaging material. The packaging material delivery unit
A holding shaft portion that holds a roll-shaped body that is rotatably provided around a predetermined axis and is formed by winding a packaging material in a state where the predetermined axis and the axis of the roll-shaped body are aligned with each other. When,
The drug packaging device according to claim 4 , wherein the holding shaft portion is provided with a rotation driving unit that rotationally drives the holding shaft portion around a predetermined axis as a means for forcibly delivering the packaging material. The rotation drive unit can brake the rotation of the holding shaft unit.
When the transport control unit is stopping the delivery of the packaging material by the packaging material delivery unit while the packaging material is being transferred by the packaging material transfer unit, the rotation drive unit causes the holding shaft unit. The drug packaging device according to claim 5 , wherein the rotation of the drug packaging device is braked. The packaging material delivery unit can pull back the packaging material.
In the initial operation, the transport control unit is
When the pressing member is in the relaxation side limit position, the packaging material is pulled back by the packaging material delivery portion to move the pressing member to the origin position.
When the pressing member is not at the relaxation side limit position, first, the packaging material is sent out by the packaging material delivery unit to move the pressing member to the relaxation side limit position, and then the packaging material delivery unit is used. The drug packaging device according to claim 2 , wherein the pressing member is moved to the origin position by pulling back the packaging material.