JP4261662B2 - Drug dispensing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medicine fixed amount dispensing device that stores a large number of drugs such as tablets and plastic bottles for injection and discharges the stored drugs one by one as necessary.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a medicine fixed quantity dispensing device that dispenses medicines such as tablets by a predetermined amount, there are those described in, for example, Japanese Utility Model Laid-Open No. 2-103020 and Japanese Utility Model Publication No. 5-13685. In the medicine fixed quantity dispensing devices described in these publications, the upper surface of the medicine storage container has a downward slope from its center, and a number of grooves for storing and aligning medicines one by one in the periphery are even in the circumferential direction. An alignment portion formed at intervals, a payout opening communicating with the groove formed at a predetermined position on the bottom surface of the storage container, and a partition plate provided at a position directly above the payout opening to cover the groove Has been.
[0003]
The medicine fixed quantity dispensing device configured as described above stores a large number of medicines in a storage container, and the articles are stored one by one in the periphery formed by the rotation of the alignment unit, directly below the partition plate. The medicines that have reached the position are sequentially dispensed through the dispensing outlet.
[Problems to be solved by the invention]
[0004]
However, in the medicine fixed quantity dispensing device described in each of the above-mentioned publications, it is necessary to match the shape of the groove of the alignment portion with the shape and size of the medicine, so the shape of the groove according to the shape and size of the medicine to be dispensed , It is necessary to change the size. For example, when a new drug is added, an alignment part having a groove adapted to the drug must be manufactured each time, which increases the cost. Further, when dispensing a plurality of types of drugs, it is necessary to replace and use the drug dispensing device according to the type of the drug, or it is necessary to prepare a fixed quantity of drug dispensing device corresponding to the type of the drug. For this reason, there is a problem that the apparatus is increased in size and the cost is increased.
[0005]
In order to solve the above-mentioned problems, the applicant of the present application disclosed in Japanese Patent Application No. 10-286361, an alignment body that is housed in a medicine housing portion and in which a vent smaller than the size of the medicine is disposed, and its housing. A suction means is provided in which the space formed between the bottom plate and the alignment plate is in a substantially vacuum state. By the operation of the suction means, the drug is adsorbed to the vent and is conveyed to the payout opening by the rotation of the alignment plate. In addition, there is proposed a medicine fixed quantity dispensing device in which medicines in a storage unit are dispensed one by one from a dispensing outlet.
[0006]
However, in the proposed medicine dispensing / dispensing device, there is a problem that a suction device that makes a substantially vacuum state between the alignment plate and the bottom plate is necessary, and an increase in the size of the device cannot be avoided.
[0007]
The present invention has been made to solve such problems, and can be used for various shapes and sizes of medicines with a compact structure. It is an object of the present invention to provide a medicine fixed quantity dispensing device that can be dispensed easily in quantities.
[0008]
[Means for solving the problems and actions / effects]
In order to achieve the above-described object, a medicine dispensing device according to the present invention comprises:
In the medicine fixed amount dispensing device for dispensing a plurality of medicines stored in the storage unit one by one,
(A) arranged in the storage portion, a rotating body pair of conductors and more becomes a conductor is charged to a conductor and the negative electrode is charged to the positive electrode is arranged in at least two Kumigai peripheral side,
(B) an electrode for charging the conductor to a positive electrode or a negative electrode,
(C) a discharge outlet for sequentially discharging the medicine adsorbed on the outer peripheral side of the rotating body by electrostatic adsorption force generated between the positive electrode and the negative electrode of the conductor ;
The distance between the conductor charged to each positive electrode and the conductor charged to the negative electrode is set to be smaller than the size of the drug, and one set of conductors and another set of adjacent conductors The interval is sufficiently larger than the size of the drug .
[0009]
In the present invention, the conductor of the rotating body is charged to the positive electrode or the negative electrode by the electrode, respectively, and the conductor charged to the positive electrode and the conductor charged to the negative electrode are arranged at an interval smaller than the size of the drug. An electrostatic adsorption force is generated in one set of conductors, and one of the medicines stored in the storage unit is adsorbed by the electrostatic adsorption force. The medicine adsorbed on the rotating body is sequentially conveyed to the dispensing outlet as the rotating body rotates, and is dispensed from the dispensing outlet.
[0010]
According to the present invention, the drug is attracted to the rotating body by the electrostatic attraction force and is transported to the discharge outlet, so that the effect can be easily paid out to the next process regardless of the shape and size of the drug. Play. In addition, the structure is simple and the apparatus configuration can be made compact.
[0011]
In addition, according to the present invention, the distance between one set of conductors and another set of conductors adjacent thereto is set to be sufficiently larger than the size of the medicine. One of the drug can it to reliably adsorb, can you to simultaneously adsorb more agents to the rotating body. Accordingly, it is possible to increase the amount of medicine dispensed for one rotation of the rotating body.
[0012]
In the present invention, it is preferable that the discharge port is provided with a charge removing unit that removes the electric charge charged in the medicine. By doing so, there is an effect that it is possible to pay out to the next step in a state where the electric charge on the medicine is removed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, a specific embodiment of the medicine fixed amount dispensing apparatus according to the present invention will be described with reference to the drawings.
[0014]
FIG. 1 (a) shows a longitudinal sectional view of the medicine fixed amount dispensing device according to the first embodiment of the present invention, and FIG. 1 (b) shows a sectional view taken along line AA of FIG. 1 (a). It is shown. Further, FIG. 2 shows an enlarged view of a portion B in FIG.
[0015]
The medicine fixed quantity dispensing device 1 of the first embodiment is applied to a tablet supply device that separates and supplies tablets one by one, and includes a storage unit 2 for storing tablets T, and the storage unit 2 from below. And a hollow support base 3 to be supported.
[0016]
The bottom plate 4 of the storage unit 2 is inclined as a whole so that the tablets T stored in the storage unit 2 are stored in one place. Then, a disc-shaped alignment plate 6 (corresponding to a rotating body in the present invention) having 32 conductors 5 is rotatably provided.
[0017]
A notch 4 a is formed in a part of the bottom plate 4 (near the lowest point Q), and an electrode roller 7 for supplying electric charges to the respective conductors 5 in the notch 4 a is parallel to the bottom plate 4. It is arranged so that it can rotate freely. The electrode roller 7 is disposed so as to come into contact with the back surface of the alignment plate 6 and is rotated as the alignment plate 6 rotates. The electrode roller 7 has a structure in which the electrode portions 8 and the insulating portions 9 are alternately arranged along the axial direction. Conductive wires 10a and 10b are electrically connected to the electrode portion 8 via brushes (not shown), and the conductive wires 10a and 10b are connected to a variable booster 11 so that each electrode portion 8 has a positive polarity and a negative polarity. It comes to be charged with sex. In addition, the width | variety of the insulation part 9 between the said electrode parts 8 is made smaller than the magnitude | size of a tablet.
[0018]
The alignment plate 6 is divided into an upper layer 6a and a lower layer 6b, and the conductor 5 is sandwiched between the upper layer 6a and the lower layer 6b. These conductors 5 are a combination of two conductors arranged at a distance smaller than the size of the tablet T in the radial direction, and these combined conductors are larger than the size of the tablet T in the rotation direction of the alignment plate 6. Arranged at large intervals. Each of the conductors 5 has a substantially rectangular shape, and the combined conductor has a size substantially the same as that of the tablet T. As the alignment plate 6, a dielectric material such as hard vinyl chloride or acrylic resin is used.
[0019]
A rotation shaft 12 is connected to the center of the alignment plate 6, and the rotation shaft 12 is connected to a motor (not shown) in the support 3 via the bottom plate 4 to rotate the alignment plate 6. ing.
[0020]
On the side wall of the storage portion 2 slightly below the uppermost point P of the bottom plate (alignment plate 6), there is provided a discharge port 13 for discharging the tablets T stored in the storage portion 2 one by one. The discharge port 13 is provided with a charge removing unit 14 for removing charges stored in the tablet T when the tablet T passes through. The discharge port 13 is connected to the next through a discharge chute (not shown). It is connected to the process. In addition, a baffle plate 15 that guides the tablets T conveyed along with the rotation of the alignment plate 6 into the discharge port 13 is located on the side wall of the storage unit 2 near the discharge port 13 in the direction of the uppermost point P slightly from the horizontal direction. It is fixed so that it protrudes toward.
[0021]
In the medicine fixed quantity dispensing device 1 configured in this way, each electrode portion 8 of the electrode roller 7 is charged by the variable booster 11 and is sandwiched in the radial direction of the alignment plate 6. Are charged to positive polarity and negative polarity, respectively. In this way, electrostatic attracting force is generated in each pair of conductors 5 and 5 charged to positive polarity and negative polarity, and 1 of the tablet T deposited near the lowest point Q by this electrostatic attracting force. One is adsorbed between a pair of conductors 5, 5 on the alignment plate 6. Next, as the alignment plate 6 is rotated (right rotation in this embodiment), the electrode roller 7 is rotated to charge each pair of conductors 5 to each polarity, and the tablets T are sequentially adsorbed. Thus, by rotating the alignment plate 6, the tablets T adsorbed on the conductors 5 and 5 of each set sequentially pass through the uppermost point P and are conveyed to the vicinity of the discharge port 13, abut against the baffle plate 15, and enter the discharge port 13. To be introduced. The tablet T introduced into the dispensing outlet 13 in this way is demagnetized by the electrification removing unit 14, and is supplied to the next process through the dispensing chute.
[0022]
According to the first embodiment, it is possible to deal with the dispensing of various tablets T regardless of the shape and size, and even when a plurality of different types of tablets T are adapted, they are stored in the storage unit 2. If the tablet T is replaced, it is not necessary to replace the medicine fixed amount dispensing device itself, and it is not necessary to prepare the number of medicine fixed amount dispensing apparatuses corresponding to the type of the tablet, so that the cost can be reduced. Moreover, since it is the structure which adsorb | sucks the tablet T to the alignment board 6 with an electrostatic attraction force, it can be set as a compact structure and there exists an effect which can suppress the enlargement of an apparatus.
[0023]
In the first embodiment, it is preferable that the polarity of the electrode portion 8 of the electrode roller 7 is periodically changed by the variable booster 11. By doing so, it is possible to suppress a decrease in adsorption force due to the electret phenomenon.
[0024]
Next, FIG. 3A shows a longitudinal sectional view of the medicine fixed amount dispensing device 20 according to the second embodiment of the present invention, and FIG. 3B shows a sectional view taken along the line CC of FIG. 3A. Has been.
[0025]
The medicine fixed amount dispensing device 20 of the second embodiment is basically the same as the first embodiment except for the configuration of the alignment plate 6 ′ and the bottom plate 4 ′. It should be noted that parts common to the first embodiment are given the same reference numerals in the drawing, and detailed description thereof will be omitted.
[0026]
In the second embodiment, the alignment plate 6 ′ has a plurality of (in this embodiment, 32) conductors 5 ′ sandwiched between the upper layer 6a ′ and the lower layer 6b ′, and is arranged at the center thereof. It is rotatably supported by a hollow rotating shaft 12 'connected thereto. The rotary shaft 12 'extends through the bottom plate 4' into the support base 3, and a driven gear 22 is attached near the lower end. A drive gear 21 that is rotationally driven by a motor (not shown) is provided in the support 3. The drive gear 21 meshes with the driven gear 22, and a driving force is transmitted to the rotary shaft 12 ′ to transmit the drive gear 21. The alignment plate 6 'is configured to rotate.
[0027]
The conductors 5 ′ are arranged along the periphery of the alignment plate 6 ′ with intervals larger and smaller than the size of the tablet T alternately. The conductors adjacent to each other with an interval smaller than the tablet T are charged with different polarities, and the conductors adjacent with an interval larger than the tablet T are charged with the same polarity. ing.
[0028]
FIG. 4 shows a wiring diagram of conductive wires for charging each conductor 5 ′ arranged on the alignment body 6 ′ with polarity. As shown in the figure, conductors 5 'to be charged with the same polarity are connected by conducting wires 23 and 24, and these conducting wires 23 and 24 are connected to a variable booster in the support base 3 through the rotating shaft 12'.
[0029]
In the medicine fixed quantity dispensing device 20 configured in this way, each conductor 5 ′ is charged with each polarity by the variable booster, and the conductors 5 ′ and 5 ′ adjacent to each other with an interval smaller than the size of the tablet T. An electrostatic attraction force is generated between them, and one tablet T is adsorbed between the conductors 5 'and 5' by the electrostatic attraction force. The tablets T adsorbed in this way are sequentially conveyed to the vicinity of the discharge outlet 13 by the rotation of the alignment body 6 ′, introduced into the discharge outlet 13 by the baffle plate 15, and discharged by the electrification removing unit 14. It is demagnetized and supplied to the next process. Thus, the same effect as in the first embodiment can be obtained.
[0030]
In the second embodiment, the conductors 23 and 24 for connecting the conductors 5 'having the same polarity are all connected on the alignment plate 6' and wired so as to pass through the rotary shaft 12 '. For example, all the conductors connected to each conductor 5 ′ may be wired so as to be connected in the support base 3 through the rotary shaft 12 ′, and are not limited to the wiring diagram of FIG. Absent.
[0031]
Also in the second embodiment, as in the first embodiment, the polarity charged to the conductor 5 ′ by the variable booster is periodically changed to suppress the decrease in the adsorption force due to the electret phenomenon. Is preferred.
[0032]
Next, FIG. 5A shows a plan view of the medicine fixed amount dispensing apparatus 30 according to the third embodiment of the present invention, and FIG. 5B shows a sectional view taken along the line DD in FIG. 5A. ing.
[0033]
Similarly to the first and second embodiments, the medicine fixed amount dispensing apparatus 30 of the third embodiment is applied to a tablet fixed amount dispensing apparatus that separates and supplies tablets one by one, and stores tablets T The storage unit 31 and a rotary drum 33 (corresponding to the rotary body in the present embodiment) 33 that is built in the storage unit 31 and that is hollow and has a plurality of conductors 32 disposed on the outer peripheral surface thereof.
[0034]
A support shaft 34 is fixed to one side wall 33 a of the rotary drum 33, and is rotatably supported on the side wall 31 a of the storage portion 31. A hollow rotary shaft 35 is fixed to the other side wall 33 b of the rotary drum 33, and the rotary shaft 35 is supported by the side wall 31 b of the storage portion 31 and extends outside the storage portion 31. . A driven gear (not shown) is provided in the vicinity of the tip of the rotating shaft 35, and a rotational driving force is transmitted to the rotating shaft 35 via the driven gear so that the rotating drum 33 rotates.
[0035]
On the outer peripheral surface 33c of the rotating drum 33, two conductors 32 in the axial direction are spaced from each other by a smaller distance than the size of the tablet T, and a plurality of (in this embodiment, 12) conductors 32 from the tablet T in the rotational direction. It is sandwiched at large intervals. The conductors 32 adjacent in the axial direction are charged with different polarities, and the conductors 32 adjacent in the rotation direction are charged with the same polarity. As the rotating drum 33, for example, a dielectric material such as hard vinyl chloride or acrylic resin is used.
[0036]
The conductors charged to the same polarity are connected by a lead wire (not shown), and this lead wire is connected to a variable booster (not shown) provided outside the storage portion 31 through the rotary shaft 35.
[0037]
The storage unit 31 has a concave shape with a valley in the vicinity of the lowermost part of the rotary drum 33, and the tablet T to be put into the storage part 31 is deposited near the lowermost part of the rotary drum 33. Yes. A part of the inner wall 31c of the storage part 31 is shaped along the outer peripheral surface of the rotary drum 33, and the interval between the part and the rotary drum 33 is very narrow (so that the tablet T cannot pass).
[0038]
The upper end of the inner wall 31c has a pointed shape close to the circumferential surface of the rotating drum 33, and a dispensing outlet 36 for dispensing the tablets T that are adsorbed and conveyed by the rotating drum 33 is provided on the upper end surface. ing. The payout port 36 is connected to a payout chute 37 formed in the side wall, and the payout chute 37 is provided with a charge removing portion 38.
[0039]
In the medicine fixed amount dispensing device 30 configured as described above, the conductors 32 arranged on the outer peripheral surface of the rotary drum 33 are charged to each polarity by the variable booster, and electrostatically between the conductors 32 adjacent in the axial direction. Adsorption force is generated. Due to this electrostatic attraction force, one of the tablets T that are volumed near the bottom of the rotating drum 33 is adsorbed, and the rotation of the rotating drum 33 causes the tablets T to be sequentially adsorbed to the conductors 32 arranged in the axial direction.
[0040]
Thus, the tablet T adsorbed on the outer peripheral surface of the rotating drum 33 comes into contact with the upper end portion of the inner wall 31c, and the adsorbing force is weakened. The tablets T introduced into the dispensing chute 37 from the dispensing outlet 36 are removed from the charge by the charge removing unit 38 and supplied to the next process. Thus, the same effect as in the first embodiment can be obtained.
[0041]
Also in the third embodiment, it is preferable that the polarity charged to the conductor 32 by the variable booster is periodically changed, and thus it is possible to suppress a decrease in the attractive force due to the electret phenomenon.
[0042]
In the third embodiment, the conductors 32 having the same polarity are connected to each other by conducting wires, and the respective polarities are charged to the conductors 32 through the conducting wires. However, the present invention is not limited to this. A similar electrode roller may be disposed in the rotating drum 33, and each conductor 32 may be charged via the rotating roller.
[0043]
In each of the embodiments, a recognition unit such as a photoelectric sensor that counts the number of tablets T passing through the dispensing chute may be provided.
[0044]
Moreover, the medicine fixed quantity dispensing device of each of the above embodiments can be applied to the medicine packaging apparatus and the tablet sorter described in Japanese Patent Application No. 10-286361 proposed by the present applicant.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view (a) and a sectional view taken along line AA of a medicine fixed amount dispensing device according to a first embodiment of the present invention.
FIG. 2 is an enlarged view of a portion B in FIG. 1 (a).
FIG. 3 is a longitudinal sectional view (a) and a sectional view taken along line CC of a medicine fixed amount dispensing device according to a second embodiment of the present invention.
FIG. 4 is a wiring diagram of conductors connecting conductors arranged in the alignment body of the second embodiment.
FIG. 5 is a plan view (a) and a DD line cross-sectional view (b) of the medicine fixed amount dispensing device according to the third embodiment.
[Explanation of symbols]
1, 20, 30 Drug dispensing apparatus 2, 31 Storage unit 3 Support base 4, 4 'Bottom plate 5, 5', 32 Conductor 6, 6 'Alignment plate (rotary body)
7 Electrode roller 8 Electrode part 9 Insulating part 10 a, 10 b, 23, 24 Conductor 11 Variable booster 12, 12 ′, 35 Rotating shaft 13, 36 Discharge outlet 14, 38 Charge removal part 15 Baffle plate 21 Drive gear 22 Driven gear 33 Rotating drum (rotating body)
34 Support shaft 37 Discharge chute

Claims (2)

In the medicine fixed amount dispensing device for dispensing a plurality of medicines stored in the storage unit one by one,
(A) arranged in the storage portion, a rotating body pair of conductors and more becomes a conductor is charged to a conductor and the negative electrode is charged to the positive electrode is arranged in at least two Kumigai peripheral side,
(B) an electrode for charging the conductor to a positive electrode or a negative electrode,
(C) a discharge outlet for sequentially discharging the medicine adsorbed on the outer peripheral side of the rotating body by electrostatic adsorption force generated between the positive electrode and the negative electrode of the conductor ;
The distance between the conductor charged to each positive electrode and the conductor charged to the negative electrode is set to be smaller than the size of the drug, and one set of conductors and another set of adjacent conductors The medicine fixed amount dispensing device is characterized in that the interval is sufficiently larger than the size of the medicine. The medicine fixed-quantity dispensing device according to claim 1 , wherein the dispensing outlet is provided with a charge removing unit that removes charges charged in the medicine.

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