WO2021171799A1

WO2021171799A1 - Powdered medicine division and packaging device

Info

Publication number: WO2021171799A1
Application number: PCT/JP2021/000392
Authority: WO
Inventors: 大村　司郎; 繁幸山本; 和宏米屋
Original assignee: 株式会社トーショー
Priority date: 2020-02-27
Filing date: 2021-01-07
Publication date: 2021-09-02
Also published as: JP2021132858A; TW202138246A; JP6860246B1; CN113939454A

Abstract

Provided is a powdered medicine division and packaging device capable of using a simple configuration to accurately measure the weight of a powdered medicine to be divided and packaged, without the need to weigh the powdered medicine beforehand, and without increasing costs.　A powdered medicine division and packaging device 100 has: a powdered medicine accommodation vessel 61 having a discharge means 62; a rotatable apportioning disc 20, to the upper surface of which powdered medicine from the powdered medicine accommodation vessel 61 is supplied; a rotational drive part 30; a weighing part 10 that measures the total weight of the apportioning disc 20, the rotational drive part 30, and the powdered medicine supplied to the apportioning disc 20; a controller 140 that, when the discharge means 62 is discharging the powdered medicine, controls the operation of the discharge means 62 on the basis of a weight measurement result from the weighing part 10 so that the supplied weight of the powdered medicine supplied to the apportioning disc 20 from the powdered medicine accommodation vessel 61 is one prescribed dose; a raking part 50 that ejects the powdered medicine from the apportioning disc 20 one package portion at a time; and a packaging device 70 that packages the ejected powdered medicine.

Description

Powder packaging device

The present invention relates to a powder packaging device that supplies and packages powders one by one.

For powder dispensing equipment, which has long been used for automating drug dispensing operations, the most important performance required is to ensure that the amount of powder packaged in one package is the amount specified in the prescription. To match. In order to obtain this performance, the pharmacist weighs the amount of one prescription for the powder to be prescribed in advance on the weighing table, then puts it into the packaging device, and the powder containing the rotary distributor is packaged in a predetermined manner. It is known that the powder is divided into a number and the divided powder is packaged one by one with a packaging machine and output (see, for example, "Patent Document 1"). With this technology, the actual amount of powdered powder is compared with the prescription value, and if the actual amount of powdered powder is within the permissible range, it is judged to be appropriate and the packaging operation is continued, and if it is judged to be inappropriate, automatic processing is performed. Stop.

In addition, the pharmacist weighs the powder in advance with a scale so that the powder dispensed in the mortar has a predetermined total weight, that is, the amount of one prescription obtained by multiplying the weight of one packet by the number of packets, and then the package is divided. A technique is known in which a powder is charged into an apparatus, powder is supplied using a powder split mass, and then the weight is measured (see, for example, "Patent Document 2"). In this technique, the powder of the set weight set for the first time is supplied to the powder split mass, the weight actually supplied is measured, and the measured value actually supplied for the first time is corrected for the second time. The corrected set weight is supplied, and thereafter, the powder supply by the first set weight and the powder supply by the second corrected set weight are repeatedly performed. As a result, it is possible to prevent the weight of the powder remaining at the time of the final packaging from becoming smaller than the amount of one packaging.

In each of the above-mentioned techniques, the pharmacist needs to weigh the powder to be packaged in advance, which increases the work load of the pharmacist and takes time to distribute the powder. There was a problem.
A technique has been proposed that can reduce the burden of pre-weighing work by the pharmacist described above, and can automatically weigh one prescription with an apparatus without performing pre-weighing (for example, "Patent Documents". 3 ”). In this technique, the powder is weighed and supplied from the cassette containing the powder to the movable measuring device, and the measured and supplied powder is supplied to the distribution dividing device by the measuring device.

Japanese Unexamined Patent Publication No. 2014-88193 Japanese Unexamined Patent Publication No. 2002-9703 Japanese Unexamined Patent Publication No. 7-80043

However, in the technique described in "Patent Document 3", the weighing device for weighing the powder needs to be movable so as to be located at any of the weighing position, the distribution position, and the cleaning position, and the configuration and control are extremely difficult. There is a problem that it is complicated and costs up.
The present invention solves the above-mentioned problems, and can accurately measure the weight of powder packaged in a simple configuration without measuring the weight of the powder in advance and without increasing the cost. The purpose is to provide a packaging device.

The invention according to claim 1 is a powder storage container having a discharge means for storing powder and discharging the contained powder, and the powder discharged from the powder storage container is supplied to the upper surface, and the supplied powder is the upper surface. A rotatable distribution disk that is evenly distributed in an annular shape, a rotation drive unit that supports and rotationally drives the distribution disk, and the total weight of the distribution disk, the rotation drive unit, and powder supplied to the distribution disk. And when the discharging means is discharging the powder, the supply weight of the powder supplied from the powder storage container to the distribution disk is measured based on the weight measurement result of the weighing unit. A control unit that controls the operation of the discharging means so that the measured supply weight becomes one prescribed amount, a scraping unit that discharges powder from the distribution disk one package at a time, and a scraping unit that discharges one package at a time. It is characterized by having a packaging device for packaging the powdered powder.

The invention according to claim 2 is the powder packaging apparatus according to claim 1, wherein the control unit operates the discharging means when the supplied weight reaches a predetermined amount immediately before reaching the one prescribed amount. The weight of the powder supplied from the powder storage container to the distribution disk is reduced.

The invention according to claim 3 is the powder packaging apparatus according to claim 2, wherein the predetermined amount is different for each type of powder supplied from the powder storage container to the distribution disk.

According to a fourth aspect of the present invention, in the powder packaging device according to the third aspect, the predetermined amount is further stored in a storage means, and the control unit reads the predetermined amount from the storage means to control the operation of the discharge means. It is characterized by doing.

The invention according to claim 5 is the powder packaging apparatus according to any one of claims 1 to 4, wherein the powder supplied from the powder storage container to the distribution disk is in the air for the one prescription amount. It is characterized by including scattered aerial residue.

The invention according to claim 6 is the powder packaging apparatus according to claim 5, further characterized in that the air residue differs depending on the type of powder supplied from the powder storage container to the distribution disk.

According to the present invention, the supplied powder is weighed by the weighing unit while being supplied from the powder storage container, and is directly supplied to the distribution disk and then packaged. Therefore, it is possible to provide a powder packaging device capable of accurately measuring the weight of the powder to be packaged without measuring the weight of the powder in advance and without increasing the cost with a simple configuration and control. ..

It is a schematic front view which shows the powdered medicine packing apparatus which concerns on each 1st and 2nd Embodiment of this invention. It is the schematic perspective view which shows the disk distribution part used in each 1st and 2nd Embodiment of this invention. It is a schematic front view which shows the disk distribution part used in each 1st and 2nd Embodiment of this invention. It is a schematic disassembled front view which shows the disk distribution part used in each 1st and 2nd Embodiment of this invention. It is a control block diagram of the powder packaging apparatus used in each 1st and 2nd Embodiment of this invention. It is a diagram which shows the relationship between the weighing time and the weighing measured value in each of the 1st and 2nd embodiments of this invention. It is a flowchart explaining the operation of the powder packaging apparatus used in the 1st Embodiment of this invention. It is a schematic plan view which shows the powdered medicine packing apparatus which concerns on 3rd Embodiment of this invention. It is a schematic front view which shows the powdered medicine packing apparatus which concerns on 3rd Embodiment of this invention. It is a table explaining the weight α of the air residue, the new prescription amount β, and one prescription amount γ used in the second embodiment of the present invention.

(First Embodiment)
Hereinafter, the powdered medicine packaging device according to the first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic front view of the powder packaging device 100 according to the first embodiment of the present invention. In the figure, the powder packaging device 100 has a disk distribution unit 130 at a substantially central portion of a device body (not shown). The disk distribution unit 130 has a weighing device 10 as a weighing unit, a rotation drive unit 30 arranged above the weighing device 10, a saucer 20 which is a powder distribution disk arranged above the rotation drive unit 30, and the like. ing. The weighing device 10 is fixed to a housing connecting portion 16 provided in a device main body (not shown) of the powder packaging device 100 via a vibration absorber 14. The saucer 20 has a concave groove (not shown) near the outer periphery of the upper surface thereof, and powder is supplied to the concave groove. The rotation drive unit 30 rotatably supports and drives the saucer 20.

FIG. 2 is a schematic perspective view of a state in which the saucer 20 is removed from the disk distribution portion 130, FIG. 3 is a schematic front view of the same, and FIG. Is also shown a schematic disassembled front view of the disk distribution unit 130 in a state of being moved upward.
As shown in FIGS. 2 to 4, the base 31 of the rotation drive unit 30 is fixed to the object mounting portion 12 of the weighing device 10, and the motor 32 is fixed to the base 31. As shown in FIG. 4, a bearing 35 is fixed to the base 31, and the bearing 35 rotatably supports the pulley 38. A saucer base 36 is fixed to the upper part of the pulley 38, and a saucer 20 is detachably attached to the upper part of the saucer base 36. A timing gear is formed on the outer circumference of the pulley 38, and a timing belt 34 is hung between the timing gear and the timing gear 33 attached to the output shaft of the motor 32. The rotary drive unit 30 is composed of the base 31, the motor 32, the timing gear 33, the timing belt 34, the bearing 35, the saucer base 36, and the pulley 38 described above.

From the above configuration, the weighing device 10 includes a base 31, a motor 32, a timing gear 33, a timing belt 34, a bearing 35, a saucer base 36, a pulley 38, a saucer 20, and the like fixed to the object mounting portion 12. The total weight can be measured. In other words, the weighing device 10 measures the weight of the tare including the saucer 20 and the rotary drive unit 30 in a state where the powder is not supplied to the saucer 20.

As shown in FIG. 1, a powder feeder unit 60 to which a powder storage container 61 capable of storing powder is detachably attached is fixed to a device body (not shown) of the powder packaging device 100 on the upper right side of the saucer 20. It is provided. The powder feeder unit 60 has a vibrating unit 62 that functions as a discharge means for dropping the powder little by little from the attached powder storage container 61 toward the saucer 20. The powder feeder unit 60 is excluded from the measurement target by the weighing device 10, so that the weighing device 10 adds the total weight of the saucer 20 and the rotary drive unit 30 to the weight of the powder supplied from the drug storage container 61 to the saucer 20. To measure. Therefore, the weight of the powder actually supplied from the powder storage container 61 to the saucer 20 can be calculated by subtracting the weight of the tare described above from the weight measured by the weighing device 10.
When the powder is supplied from the powder storage container 61 to the saucer 20, the powder storage container 61 is vibrated by the vibrating unit 62 while the saucer 20 is rotated by the motor 32, so that the powder is dropped onto the saucer 20 little by little. The saucer 20 is rotationally driven at a rotation speed of, for example, about 30 rpm, and varies depending on the type of powder. Rotate. As a result, a pile of powder is formed in a uniform annular shape in the concave groove (not shown) on the saucer 20.

As shown in FIG. 1, on the upper left side of the saucer 20, a scraping portion 50 is provided to discharge a pile of annular powder formed on the saucer 20 toward the falling hopper 51 one by one. The scraping portion 50 has a lever 53 whose base end is rotatably attached to the shaft 54 and which can be displaced by the operation of the motor 52, and a disk 55 is rotatably attached to the free end of the lever 53. .. The disk 55 is rotationally driven in the direction indicated by the arrow 56a by the operation of the motor 56 attached to the lever 53, and the lever 53 is displaced by the operation of the motor 52 so that the disk 55 can be brought into contact with and detached from the upper surface of the saucer 20. It is configured in.

When the powder is sprinkled on the saucer 20 which is rotationally driven by the operation of the motor 32, the lever 53 rotates counterclockwise in FIG. 1 by the operation of the motor 52, and the disk 55 is moved. It is displaced to a separated position away from the saucer 20. When the sprinkled powder is distributed from above the saucer 20, the lever 53 rotates about the shaft 54 in the clockwise direction in FIG. 1 due to the operation of the motor 52, and the disk 55 comes into contact with the saucer 20. Displace to the contact position.

After the disc 55 moves to the contact position, the motor 56 operates to start the rotation of the disc 55, the motor 32 operates to start the rotation of the saucer 20, and the powder sprinkled on the saucer 20 is packaged. It is released to the falling hopper 51 minute by minute. At this time, the motor 32 determines the rotation angle of the saucer 20 so that the weight of the powder sprinkled on the saucer 20 is one packet. For example, if the total weight of the powder sprinkled on the saucer 20 is 20 packets, the rotation angle of the saucer 20 is 360/20 = 18 degrees.
As the scraping portion 50, a well-known structure can be adopted, and such a well-known structure is disclosed in, for example, Japanese Patent Application Laid-Open No. 2019-20201.

As described above, in the powder packaging device 100 shown in the present embodiment, since the weighing device 10 is provided below the saucer 20, the configuration disclosed in Japanese Patent Application Laid-Open No. 2019-20201 may be the same as the above-mentioned configuration. The packaging paper 57 containing the powder cannot be transported in the horizontal direction.
In the configuration of the present embodiment, in order to accommodate the powder discharged from the saucer 20 to the drop hopper 51 in the packing paper 57 which is horizontally conveyed, the drop hopper 51 which is long in the vertical direction is used. There is a need. However, in this configuration, the moving distance of the powder passing through the falling hopper becomes long and the amount of the powder adhering to the inner surface of the falling hopper increases, so that the weight of the powder to be packaged is larger than the weight of the powder released from the saucer 20. May also decrease and become inaccurate. Further, since the drop hopper itself becomes large, there is a problem that the powder packaging device becomes large.

In order to solve such a problem, the powder packaging device 100 shown in the present embodiment uses the diagonally transporting packaging device 70 as shown in FIG. The packaging device 70 having a roll (not shown) around which the folded packaging paper 57 is wound is originally a horizontal transport unit, and its bottom surface is slanted with respect to the device body (not shown) of the powder packaging device 100. It has a mounted diagonal transport section 76. The packing paper 57 drawn out from the roll (not shown) is conveyed diagonally downward to the right by the oblique conveying portion 76 on the front side of the apparatus main body (not shown).
The powder discharged from the saucer 20 to the drop hopper 51 by the operation of the scraping portion 50 is housed in the folded paper 57. The packaging paper 57 containing the powder is sealed in the packaging device 70 one by one, transported diagonally downward to the right by the oblique transport unit 76, and then fed to the horizontal transport unit 74, and is sent to the horizontal transport unit 74 of the weighing device 10. It passes below and is accumulated in the packaged drug accumulation unit 75.

With the above configuration, even if the weighing device 10 is arranged below the saucer 20, it is possible to suppress the increase in size of the powder packaging device 100 provided with the packaging device 70.
The packaging paper 57 containing the powder may be wound by a reel (not shown) provided in the packaging drug accumulating portion 75, or may be discharged to the outside of the machine. Further, although the packaging device 70 is simplified and described in FIG. 1, the actual packaging device 70 is configured as shown in FIG.

FIG. 5 is a control block diagram of the powder packaging device 100 used in the present embodiment. Reference numeral 110 is an overall control unit that controls the entire powder packaging device 100, and the packaging device 70, the disk distribution control unit 140 that controls the disk distribution unit 130, and the prescription system 200 are connected to the overall control unit 110. Has been done. The prescription system 200 has a storage unit 200a that stores prescription information including drug type information, and is provided on an external device other than the powder packaging device 100 or on the cloud, and communicates with the powder packaging device 100. It is configured to be possible.
The disk distribution control unit 140, which functions as a control unit, operates the motor 32 that rotationally drives the saucer 20, the motor 52 that swings and displaces the lever 53, the motor 56 that rotationally drives the disk 55, the vibrating unit 62, and the weighing unit 10. Control each.

The operation of the powder packaging device 100 in the first embodiment described above will be described with reference to the flowchart shown in FIG.
When the powder packaging operation is started, the overall control unit 110 acquires drug type information including the type of powder to be prescribed and the weight information for one prescription from the prescription system 200 (ST01), and the weight of the acquired powder. The information is output to the disk distribution control unit 140. Upon receiving the information, the disk distribution control unit 140 drives the motor 32 to rotate the saucer 20 (ST02), whereby the preparation for supplying the powder to the saucer 20 is completed.
Then, before the powder is supplied, the weight of the tare including the saucer 20 and the rotary drive unit 30 is measured by the weighing device 10 (ST03). Here, the weight of the powder only may be calculated by subtracting the weight value of the tare from the weight value measured after the powder is supplied, or the weight of the powder only may be obtained after the powder is supplied with the weight value of the tare as a zero standard. You may.

After that, the disk distribution control unit 140 drives the vibrating unit 62 (ST04) to drop the powder from the powder storage container 61 into the saucer 20 little by little and supply it. Then, the weight of the powder supplied to the saucer 20 by the weighing device 10 is measured while supplying the powder (ST05).
In the process of measuring the weight of the powder, the disk distribution control unit 140 determines whether or not the weight of the powder supplied to the saucer 20 has reached a predetermined amount (ST06). This is because when the supply of the powder to the saucer 20 is stopped, the total weight value of the supplied powder is desired to be as accurate as possible. Since it is desired to supply the powder from the powder storage container 61 to the saucer 20 in the shortest possible time, the amount of powder supplied per unit time is set to a certain amount. In the present embodiment, at the end of supply, the vibration intensity of the vibrating portion 62 is weakened to reduce the supply amount of powdered powder per unit time, and the total weight value of the supplied powdered powder is the weight of one prescription amount. At that time, the total weight value of the supplied powder is brought close to the value of one prescription amount by stopping the vibration in advance in anticipation of the powder weight that will be supplied.

That is, when the powder supplied to the saucer 20 reaches a predetermined amount, which is the weight immediately before reaching one prescription amount, the disk distribution control unit 140 weakens the vibration intensity of the vibration unit 62 and powders from the powder storage container 61. The supply is reduced and the expected powder weight is adjusted to be as accurate as possible. However, since the specific density of powdered medicine differs depending on the type, in the present embodiment, the predetermined amount used by the disk distribution control unit 140 is changed according to the type of powdered medicine supplied.
A predetermined amount of change will be described with reference to FIG. In the diagram shown in FIG. 6, the horizontal axis represents the operating time of the powder packaging device 100, and the vertical axis represents the weighing value of the weighing device 10. The solid line shows the weight increase value of the powder having a large specific density, and the broken line shows the weight increase value of the powder having a small specific density. As shown in FIG. 6, the weight increase value per unit time after the start of weighing is larger for powders with a large specific density than for powders with a small specific density, and for powders with a large specific density compared to powders with a small specific density. The time required for the increase is shortened.

In the present embodiment, when the supply amount of powder reaches a predetermined amount immediately before the end of supply, the disk distribution control unit 140 weakens the vibration intensity of the vibration unit 62 to reduce the powder supply amount per unit time. There is. Here, when the predetermined amount is the same for the powder having a large specific density and the powder having a small specific density, the time required to reach one prescribed amount from the predetermined amount is shorter for the powder having a large specific density. Therefore, when the supply amount of the powder having a large specific density is reduced by the predetermined amount used when the powder having a small specific density is supplied in one prescription amount, the supply amount cannot be decelerated in time and the supply amount is one prescription. It exceeds the amount. Therefore, in the present embodiment, as shown in FIG. 6, the difference between the predetermined amount 1 of the powder having a small specific density and the one prescription amount is large compared to the difference between the predetermined amount 2 of the powder having a large specific density and the one prescription amount. As described above, the predetermined amount is changed according to the specific gravity of the powder. With this configuration, the accuracy of the amount of powder supplied from the powder storage container 61 to the saucer 20 can be improved regardless of the magnitude of the specific gravity of the powder.

The determination in step ST06 described above is continued until the weight of the supplied powder reaches a predetermined amount. When the weight of the supplied powder reaches a predetermined amount, the disk distribution control unit 140 reduces the vibration intensity of the vibrating unit 62 (ST07), and the vibrating unit 62 continues to supply the powder with weak vibration. Then, when the weight of the supplied powder reaches one prescribed amount (ST08), the motor 32 is stopped and the driving of the vibrating unit 62 is stopped by the operation control from the disk distribution control unit 140 (ST09).
When a prescribed amount of powder is supplied to the saucer 20, a scraping operation is performed in which the saucer 20 is intermittently rotated and the powder for each packet is discharged to the drop hopper 51 by the scraping unit 50 (ST10). The powdered medicine released to the drop hopper 51 is sealed one by one by the packaging device 70 and then transported, and is accumulated in the packaged drug accumulating unit 75 via the horizontal transport unit 74.

According to the above configuration, the powder supplied from the powder feeder unit 60 is directly supplied to the saucer 20 while being supplied from the powder storage container 61 and weighed by the weighing device 10, and is packaged by the operation of the scraping unit 50. It is processed. Therefore, it is possible to provide a powder packaging device capable of accurately measuring the weight of the powder to be packaged without measuring the weight of the powder in advance and without increasing the cost with a simple configuration and control. ..
Further, in the technique disclosed in Patent Document 3 (Japanese Unexamined Patent Publication No. 7-80043) described above, the powder is supplied from the cassette containing the powder to the measuring device and weighed, and the powder is weighed from the measuring device to the distribution dividing device. Supplying powdered medicine. In this way, since the powder supplied from the cassette is supplied to the distribution dividing device via the measuring device, the powder remains in the measuring device and the amount of powder supplied to the distribution dividing device is smaller than the measured value. There is a problem that it will be done.
However, in the present embodiment, the weight of the powder directly supplied from the powder storage container 61 to the saucer 20 is measured by the weighing unit 10 while supplying the powder, so that the measured powder is supplied to another member during the supply. The weight of the prescribed powder can be accurately measured without adhering to.

Here, a predetermined amount used in this embodiment will be described. As mentioned above, the predetermined amount is predetermined based on the specific density or type of powder used. In the present embodiment, prior to the packaging operation, a predetermined amount is different for each type of powder to be used under substantially the same environmental conditions as during the packaging operation, and the powder is supplied about 10 times for each predetermined amount. It is done by the prescribed amount. Then, a predetermined amount is used whose average value is the most approximate value for one prescription amount. A plurality of types of this predetermined amount are further determined for each value of one prescription amount. These plurality of predetermined amounts are tabulated according to the type of powder and the value of one prescription amount, and are stored in advance in the storage unit 200a.
Since the value of one prescription amount changes depending on the individual's medical condition and the number of prescription days, the value of the predetermined amount stored in the storage unit 200a is a value obtained by multiplying each type of powdered drug and a plurality of one prescription amount by a ratio of 100% or less. It may be different. Further, in step ST06, the purpose is to reduce the supply amount at the stage when it approaches one prescription amount. Therefore, the difference amount δ up to the target value of one prescription amount for each type of powder is stored in the storage unit 200a, and in step ST06, the difference amount δ is subtracted from the one prescription amount to obtain “one prescription amount −δ”. It may be used as a predetermined amount.

In the first embodiment, in steps ST06 to ST07 shown in FIG. 7, the vibration intensity of the vibrating portion 62 is reduced at different times depending on the type of powder to be supplied, and the vibration is supplied from the powder storage container 61 to the saucer 20. The supply of powdered medicine is reduced. However, the first embodiment described above is also performed as a configuration in which the stop determination of step ST08 proceeds from step ST05 to step ST06 or step ST07 without performing such processing, and the vibrating portion 62 is operated with a constant strength. It is possible to obtain the same action and effect as the action and effect in the form.

In the first embodiment, the configuration is shown in which the powdered drug type information including the value of a predetermined amount is stored in the storage unit 200a of the prescription system 200 provided outside the powdered drug packaging device 100, but the powdered drug type information is stored. It may be configured to be stored inside the powder packaging device 100. In this case, the storage unit for storing the drug type information of the powder is, for example, a storage unit 110a inside the overall control unit 110, a storage unit 140a inside the disk distribution control unit 140, and further, the powder packaging device 100 is shown. It is provided as a storage unit 100a inside the main body of the device. The storage unit 100a is connected to the overall control unit 110 or the disk distribution control unit 140. Also in this configuration, the same effect as that of the first embodiment can be obtained.
Further, in the first embodiment, the value of one prescription amount is acquired from the prescription system 200 as the weight information of one prescription including the drug type information, but the value of one prescription amount is shown in the powder packaging device 100. It may be acquired by input of the device operator from the operation panel.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the first embodiment, in step ST08 shown in FIG. 7, the vibrating unit 62 is stopped when the supply amount of the powder supplied from the powder storage container 61 to the saucer 20 reaches a predetermined prescription amount. The supply of powder from the powder storage container 61 to the saucer 20 is stopped. However, in reality, even if the supply of powder is stopped with one prescription amount, the scattered powder remains in the space above the saucer 20, and the air residue, which is the powder remaining in the air, is on the saucer 20. If it falls to, the supply amount will exceed one prescription amount.
Therefore, in the second embodiment of the present invention, the weight obtained by subtracting the predicted weight α of the air residue from the above-mentioned one prescription amount in advance is used as a new one prescription amount β. Assuming that the above-mentioned one prescription amount is γ, as shown in FIG. 10, one prescription amount γ = weight α of the air residue + new one prescription amount β.

The weight α of the balance in the air changes depending on the specific gravity of the powder, that is, the type and the air resistance value at the time of dropping. Therefore, for example, prior to the packaging operation, the weight α of the air residue is measured about 10 times under almost the same environmental conditions as during the packaging operation, and the weight α of the air residue is set by calculating the average value. It is desirable to do. The weight α of the air residue is measured by stopping the operation of the vibrating unit 62 when the amount of powder supplied to the saucer 20 reaches one prescribed amount γ, measuring the weight at that time by the weighing device 10, and then measuring the weight. After waiting until the air residue falls on the saucer 20, the weight is measured again by the weighing device 10, and the increased weight value is measured as the weight α of the air residue. The weight α of the air residue set based on the measured value is stored in the storage unit 200a of the prescription system 200 as drug type information for each type of powder, and is read out as needed.

According to the second embodiment of the present invention, as the powder supplied from the powder storage container 61 to the saucer 20, in addition to the weight of the powder actually supplied on the saucer 20, it remains in the space above the saucer 20. The weight including the air residue is taken as one prescription amount. As a result, it is possible to measure an accurate weight that is closer to a predetermined prescription amount as a prescription amount to be measured when the air residue of the powder falls on the saucer 20, and the accuracy of the prescription weight can be measured. Can be further improved.
In the second embodiment, the powder drug type information including the weight α of the air residue is stored in the storage unit 200a, but the powder drug type information is stored inside the powder powder packaging device 100, for example, the storage unit 100a, It may be configured to be stored in 110a and 140a. Also in this configuration, the same effect as that of the second embodiment can be obtained.
Further, also in the second embodiment, similarly to the first embodiment, the process proceeds from step ST05 to the stop determination of step ST08 without going through steps ST06 or ST07, and the vibrating unit 62 is operated with a constant intensity. However, it is possible to obtain the same effect as the above-mentioned effect.

(Third Embodiment)
In each of the first and second embodiments, a configuration is shown in which a weighing device 10 is provided in the disk distribution unit 130 to measure the weight of the disk distribution unit 130. However, when two sets of such disk distribution units are provided and the powder distributed from each distribution disk of each disk distribution unit is to be accommodated between the packaging papers by a common drop hopper, the packaging is performed due to the presence of the weighing device 10. Paper cannot be transported horizontally. That is, in order to store the powder between the horizontally conveyed packaging papers, the falling hopper needs to receive the powders directly under the distribution disk and store the powders in the packaging paper below the weighing device 10.

However, in this configuration, it is necessary to use a drop hopper that is long in the vertical direction, and even though the weight of the powder is accurately weighed by the disk distribution part, the amount of powder adhered to the inner surface of the drop hopper is large. Therefore, the weight of the packaged powder may be inaccurate.
For this reason, in the third embodiment, two sets of disk distribution units are provided, and powders discharged one packet at a time from the distribution disk of each disk distribution unit are received by a common drop hopper provided between each distribution disk. Then, the packaging paper is conveyed along a transport path formed diagonally from below the distribution disk on one side to the bottom of the weighing portion on the other side. With this configuration, the falling hopper can be made smaller, and it is possible to prevent the amount of powder powder packaged in each packet from being reduced by adhering to the falling hopper.

8 and 9 show a third embodiment of the present invention, FIG. 8 shows a schematic plan view of the powder packaging device 101 according to the third embodiment, and FIG. 9 shows a schematic front view of the powder packaging device 101. ing. In this third embodiment, the same members as those in the first embodiment described above are designated by the same reference numerals, and detailed description of each member will be omitted.
The powder packaging device 101 has two sets of a weighing device 10, a saucer 20 which is a distribution disk, a rotation driving unit 30, a scraping unit 50, and a powder feeder unit 60, respectively, symmetrically. Between each saucer 20, a single drop hopper 51 for receiving the powder discharged from each scraping portion 50 is provided.

The powder packaging device 101 has a packaging device 70 having a roll R (see FIG. 8) around which the folded packaging paper 57 is wound. The packaging device 70 has an oblique transport portion 76 whose bottom surface is obliquely mounted on the main body of the powder packaging device 101 (not shown).
The packing paper 57 pulled out from the roll R located below the one tray 20 toward the front is conveyed along the packing paper transport path 71 diagonally downward to the right on the front side of the apparatus, and falls during the transport. The lower part of the hopper 51 is inserted between the folded portions. Powder is discharged from the scraping portion 50 to the falling hopper 51, and the released powder is accommodated between the packaging papers 57 via the falling hopper 51.

The packing paper 57 containing the powder is conveyed diagonally downward to the right along the packing paper transport path 71, and is heat-sealed for each packet at the heat-sealing portion 72. Then, after the perforations are formed in the sheet-sealed portion in the perforation forming portion 73, the packing paper 57 is accumulated in the packaging powder accumulating portion 75. The packaging paper 57 containing the powder may be wound by a reel (not shown) provided in the packaging drug accumulating portion 75, or may be discharged to the outside of the machine.

According to the above configuration, in a configuration having two sets of disk distribution units 130 each having a weighing device 10, the packing paper 57 is placed from below the distribution disk 20 of one disk distribution unit 130 to the other disk distribution unit 130. Since the paper is conveyed along the packing paper transport path 71 which is conveyed downward of the weighing device 10 possessed by the paper, the powder can be accurately weighed and packaged while preventing the device from becoming large in size. The packaging device 101 can be provided.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the specific embodiment, and unless otherwise specified in the above description, the present invention described in the claims. Various modifications and changes are possible within the scope of the purpose. The effects described in the embodiments of the present invention merely exemplify the most preferable effects arising from the present invention, and the effects according to the present invention are limited to those described in the embodiments of the present invention. is not it.
In the above configuration, the method of supplying the powder on the distribution disk by vibration has been described, but the method of supplying the powder is not limited to the method of vibration, and other methods, for example, by rotational movement such as a screw from the powder storage container. A method of discharging and supplying the powder, a method of supplying the powder released from the powder storage container by a conveyor, and the like may be adopted.

10 ... Weighing unit (weighing device), 20 ... Distribution disk (receiver), 30 ... Rotation drive unit, 50 ... Scraping unit, 61 ... Powder storage container, 62 ... Discharge means (Vibration unit), 70 ... Packaging device, 100, 101 ... Powder packaging device, 140 ... Control unit (disk distribution control unit)

Claims

A powder storage container having a discharge means for storing powder and discharging the contained powder,
A rotatable distribution disk in which the powder discharged from the powder storage container is supplied to the upper surface and the supplied powder is distributed evenly in an annular shape on the upper surface.
A rotary drive unit that supports and rotationally drives the distribution disk,
A weighing unit for measuring the total weight of the distribution disk, the rotation drive unit, and the powder supplied to the distribution disk, and a weighing unit.
When the discharging means is discharging the powder, the supply weight of the powder supplied from the powder storage container to the distribution disk is measured based on the weight measurement result of the weighing unit, and the measured supply weight is one. A control unit that controls the operation of the discharge means so as to obtain a prescribed amount,
A scraping part that discharges powder from the distribution disk one packet at a time,
A packaging device for packaging powders released one by one by the scraping portion, and a packaging device.
Powder packaging device with.
In the powder packaging device according to claim 1,
The control unit controls the operation of the discharge means when the supply weight reaches a predetermined amount immediately before reaching the one prescribed amount, and the weight of the powder supplied from the powder storage container to the distribution disk. A powder packaging device characterized by reducing the amount of powder.
In the powder packaging device according to claim 2,
A powder powder packaging device, wherein the predetermined amount differs depending on the type of powder supplied from the powder storage container to the distribution disk.
In the powder packaging device according to claim 3,
A powder dispensing device, characterized in that the predetermined amount is stored in a storage means, and the control unit reads the predetermined amount from the storage means and controls the operation of the discharge means.
In the powder packaging device according to any one of claims 1 to 4,
The one prescription amount is a powder packaging device, which comprises an aerial residue in which powder supplied from the powder storage container to the distribution disk is scattered in the air.
In the powder packaging device according to claim 5,
The powder packaging device, characterized in that the air residue differs depending on the type of powder supplied from the powder storage container to the distribution disk.